Support element for object and device comprising support element

FIELD: construction.

SUBSTANCE: invention relates to ladders. A support element for an object comprises the first support stand and the second support stand, besides, the first support stand is made as capable of axial movement relative to the support stand for axial extension of the support element, at the same time the first support stand comprises a body, made as capable of placement and extension of the second support stand, at the same the body comprises a blocking element, having a blocking position for blocking of relative axial movement of the first support stand relative to the second support stand and having opening position for provision of relative axial movement of support stands, besides, the blocking element comprises a fixator, which is made as capable of movement by inclination in the body for alternate achievement of blocking position and opening position of the blocking element, at the same time the fixator comprises a cavity for placement of the second support stand, besides, the fixator comprises a limiting surface, which surrounds the perimeter of the cavity, besides, the limiting surface is made as capable of engagement with at least two opposite parts of the perimeter of the second support stand in the blocking position of the blocking element, besides, the support element additionally comprises a shift element to shift the support element to the position of the axial extension. Also a device is described, which comprises a frame, containing at least one support, besides, at least one support comprises a support element.

EFFECT: increased stability of a ladder, higher reliability of operation of a blocking element and support elements of a ladder, increased convenience and simplicity of regulation of support element length.

18 cl, 12 dwg

The present invention relates to a supporting element for the object and the reference element contains the first support leg and second support leg, the first leg is made with the possibility of axial movement relative to the second support columns for axial elongation of the support element.

The invention also relates to a device containing a frame with at least two supports, each support includes a support element of the aforementioned type.

Supporting element, the device and the locking element of the aforementioned type are well known in the prior art. The support element may represent, for example, the extendable support leg for table or ladder. Extendable support rack can be used to ensure the sustainability of a ladder or table that is located on an uneven surface. By lengthening one or more of the supports of the subject can be accurately set the subject properly. In addition, the extendable support rack can be used to place the surface of the object (such as a countertop or bucket tray in a horizontal position.

In one embodiment, the support element of the prior art includes two legs that are configured to move relative to each other. For p is ukreplenia two parts of a support to each other may be provided for fixing or locking mechanism, so extendable support rack can be locked at the desired length. Fixation can consist of a pin or screw, which is injected into the holes provided on one or both parts of the bearing.

In addition, prior art also known table or step ladder with one or more extendable legs. By adjusting the length of one or more supports of the ladder can be installed properly.

The lack of supports of the prior art is that the regulation of their length can be laborious and time-consuming.

The objective of the invention is the creation of a support element, such as a leg, which eliminated at least one of the disadvantages associated with the control elements corresponding to the existing level of technology.

Another object of the invention is the creation of the object containing the reference element, such as an adjustable support, which eliminated at least one of the known drawbacks.

For this purpose, the invention provides a supporting element for the subject. The support element includes a first support leg and second support leg. The first leg is made with the possibility of axial movement relative to the second support columns for axial elongation of the support element. The first leg includes a housing, which which is adapted for placement by placing the second support columns. The frame includes a locking element that has a position lock for locking the relative axial movement of the first legs relative to the second support columns and the trip position to provide relative axial movement of both racks. By placing the locking element in the housing, the locking element is less susceptible to dirt and will remain relatively clean. Thus, the locking element will be less likely to wear out, ensuring reliable operation of the locking element.

In the embodiment, the locking element may include a latch that is configured to move by the rotation in the housing to alternately achieve detent and position of the opening of the locking element. The latch may represent a relatively flat plate. The latch may include a cavity, placing the second support. The latch contains the bounding surface surrounding at least part of the perimeter of the cavity. The cavity may be a hole in the lock or open cavity in the retainer. The portion of the surface of the retainer surrounding the cavity, can be a bounding surface. The bounding surface may be relatively small and can contain a relatively small part of the cavity surface, such as the edge of the cavity. The opening of the cavity may be U-shaped. In the trip position of the locking element of the bounding surface is not in contact with the second base, so that the second leg can move freely in the housing. The latch can be made so that in the position of locking of the locking element of the bounding surface is engaged with at least the opposite parts of the perimeter of the second support columns. Through engagement with opposite portions of the perimeter, the second leg is fixed in the cavity. By tilting the cavity so that the position of the block bounding surface is engaged with the opposite parts of the second legs, the second support leg is acting moment. The moment presses the second support leg tightly to the body and the bounding surface (such as edge) of the latch. The resulting static friction between the second base and the housing and the bounding surface of the retainer, provides a tight and secure fit of the second support columns. An additional advantage of the invention is that the bounding element can be continuously adjustable, i.e. the support element can be fixed in either the required position, without regulation of the discrete placement of the support element.

In the embodiment, the support contains an element of bias that shifts the reference element to the position of axial elongation. Item bias can be drawn in support of the support element to a position of axial elongation. When the locking element is in the off position (i.e. in the trip position), it can cause moving out of the second support columns. It is possible that the reference element is moved to the position of maximum elongation in the result of the force exerted by the element offset.

Alternatively, it is possible that the item offset is adjusted to trim some weight, which must withstand the supporting element. Thus, when the locking element is in the trip position, the support element will neither lengthened nor shortened. This allows the user to easily set the anchor leg in the desired position. The user may unlock the locking element, and then to control the length of the support element need only a little effort.

In the embodiment, the force offset value corresponds to the weight supported by the supporting member. If the device contains a number of supporting elements or legs, then the total CA is Leah offset many of the supporting elements is consistent with the supported mass. This will provide a "floating feeling" of the support element/device, when the reference element/device is on the surface, and the locking mechanism is in the trip position, providing a lengthening or shortening of a support, a mass is supported through the efforts of the offset. The user can lift the device up or down, feeling a slight resistance or no feeling of resistance.

In the embodiment, the bounding surface is relatively small and contains the edge of the cavity. The edge may be relatively sharp, so that the position of the blocking edge is pressed to the second pedestal. The edge may cut the second support leg. This creates a high pressure blocking, caller strong resistance to the relative movement of the two support stands.

In the embodiment, the longitudinal axis of the cavity is parallel to the second support rack in the trip position. The latch may be located perpendicular to the second leg in the trip position, so that the cavity in the retainer parallel to the second support. This provides the necessary space for the free movement of the second support. Thus, to move the latch between the position of the block and position rasmakany which requires only a small amount of tilt. Thus, the support element can be made relatively compact.

In the embodiment, the locking element, in particular a latch biased to a position blocking. By moving the locking element to a position blocking a greater force acts on the second support leg in position blocking. Therefore, generated as a result of static friction is also increased, causing more dense fixing the second support columns. The enclosure can be provided by a spring or any other element of bias. May be provided, of course, many springs or elements of bias. Spring is adapted to compress the clamp to the position of the block and to compress the bounding surface of the clamp firmly to the outer surface of the second support columns, increasing the static friction. The results support element with a rigid locking element for ensuring a tight fit.

It is possible that at least part of the latch and/or at least part of the second support rack made of hardened steel. Preferably, at least part of the lock, incoming in engagement with the second base, and part of the second support rack meshing with lock, made of hardened steel. The coefficient of friction between TLDs what I surfaces, which are both made of hardened steel, is relatively high. More specifically, in this case, the coefficient of friction for dry static friction is relatively high, ensuring a tight fit.

In the embodiment, the locking element includes additional retainer, which is made tiltable in the housing to alternately reach the lock position and the position of the opening of the locking element. Additional retainer includes a cavity, placing the second support. Additional retainer contains the bounding surface surrounding a portion of the perimeter of the cavity. The bounding surface may surround an additional part of the second support columns compared to the first retainer. The bounding surface may be adapted to engage at least with opposing portions of the perimeter of the second support rack in position locking the locking element. Additional retainer will provide even more tight fixation of the two support stands. It is possible that clamps around the longitudinal portion of the second support columns. For example, the second support can be fixed in two different axial sections, providing a rigid and secure mounting of a support stand.

In the embodiment, the fix is tor and additional retainer adapted to tilt in opposite directions to position the block. Thus, it is a relatively compact design. In addition, it is possible that the tabs are engaged with the second base from different angles. Thus, the second leg is fixed more firmly, and prevents axial movement of the second support columns.

In the embodiment, between the latch and the additional latch element is located offset, such as a spring. When the item offset is in contact with both clamps, creates a force bias, bias the latches away from each other. Preferably, the deflection of the tabs from each other corresponds to the deviation of the tabs to the position of the block. In this design element is offset accordingly displaces the locking mechanism to the position of the block.

In addition, element offset preferably is a coil spring. Element offset, bias the locking member to a position blocking can be a coil spring located around the support columns. This enables simplification of the structure, to facilitate Assembly of the support element, especially when using a coil spring.

It is possible that the locking element includes a Cam, which is located in the housing. In the embodiment, the frame includes a Cam, which is engaged with the latch for p is evegenia in the movement of the latch from the lock position to the trip position.

In the embodiment, the opposite side of the Cam can engage with the two clamps. The Cam can be adapted for simultaneous deviations of the two clamps from the lock position to the trip position. Cam provides simultaneous move the two clips. While relatively simple, it can be ensured tight fixation of the support stands.

In the embodiment, the support element includes a gear element connected to the locking element and continuing to the outer edge of the support legs. The transfer element can be connected with a drive element provided on the supporting rack to actuate the locking element. Thus, to move the locking element can be carried out at a distance from the actual position of the locking element. The drive element may be provided in a position that is ergonomically achievable for the user, without compromising the compactness of the support element. The ergonomic position of the driven element provides a convenient and reliable adjustment of the support elements.

In a preferred embodiment, the transmitting element is connected with the Cam. The transfer element can be connected with the Cam by means of a hinge. P is redatory element, such as a rod, rod, wire or similar element may be positioned so that the adjusting movement of the drive element causes the desired movement of the Cam, and tilt of one or more clamps. The transfer element can be connected with the possibility of extension housing. The transmission element may be arranged so that it moves parallel to the first support rack to actuate the locking element. The axial movement of the transmission element can be converted by the Cam to tilt one or more clamps. Thus, it can be obtained relatively compact support element.

Preferably, the transmission element is a rigid element, such as a rod or thrust. The hard element is to accurately transmit motion from the drive mechanism, the locking element. The forces acting on a rigid member, will not be deformed rigid element, as in the case of using the rope. Repetitive stretching and deformation of the cable may eventually damage it. This limits the reliability of the support element, which is undesirable. Hard gear element can provide more reliable and accurate supporting element.

In accordance with an aspect of the invention, a device created the creation, containing a frame containing at least one, preferably at least two supports. It is possible that at least one bearing includes a support element in accordance with the invention. The device may be a ladder or table. The supporting element can be conveniently and reliably adjustable, as is evident from the above description. Thus, it is relatively easy to install the device in the desired position. In addition, this ladder can withstand a significant amount of weight. Such a device containing a reference element in accordance with the invention, can easily withstand the weight of more than 150 kg

In the embodiment, the device contains at least three columns and at least three columns contain the axially extendable support element in accordance with the invention for regulating the length of each of the at least three supports. At least three supports are made with individual and selective axial extension relative to each other to accommodate the frame relative to the horizontal plane. Each supporting element may contain a gear element connected to the locking element of the support element. Each transfer element continues to the frame of the device and is connected to the Central drive mechanism for activating and de is ctively each of the locking element. The drive mechanism is adapted to activate or deactivate each of the locking element at the same time. Thus, the resulting device, such as a ladder, a table or tripod, in which each locking element of each extendable support can be instantly unlocked, using only the Central drive element.

The Central drive element provides a lock with one operation more supports, with the required length.

In addition, each support can be extended separately, i.e. the length of each support element can be arbitrarily selected by the user. The length of one of the support element does not depend on the length of the other support element. In combination with the Central drive element that allows the user to quickly and easily install the device in the desired position. For example, it can be used to set a table or tripod in a horizontal position or to install a step-ladder in a stable position on uneven ground.

It is possible that the drive mechanism includes drive handle, which is connected with a thrust. Craving can be attached can be rotated to the frame. Craving can be attached to the frame by means of bearings. A craving may contain at least two push blocks, which are located on the river which is from each other. Each propulsion unit is adapted for engagement with one of the gear elements. The drive mechanism is located so that rotation of the thrust by rotation of the drive handle causes translational movement of the transfer element in the result of pressing the push blocks. The transmission element is located so that the translational movement of the transmission element causes the tilt latch of the locking element. Thus, it turns out the hard drive and the locking element, which is safe and secure.

It is possible that the device includes a support platform, which are down at least three feet. The supporting platform can be used for placement of the subject. Using the adjustable supporting elements is relatively easy to set the level of the reference platform.

In one embodiment, the device is a ladder. The ladder may contain two, three or four of the support element in accordance with the invention. The ladder can be easily installed on uneven ground. When using the Central driving element, the ladder can be installed relatively quickly and easily.

In accordance with the embodiment the device comprises at least two supports, which are connected with the possibility of the awn rotate relative to each other. In addition, each of the at least two supports has at least one supporting element that contains the locking system according to the invention. The supporting elements separate slewing bearings are connected to the Central drive mechanism, which provides simultaneous actuation of the locking mechanism in each of slewing bearings.

Although the invention is described and will be described with reference to the preferred embodiments of, obviously, there are many other embodiments within the scope of the invention. The purpose of this application is to protect the described embodiments, the embodiments shown by the claims and their equivalents. A specialist in this field of technology (now, when a well-known advantages of the invention are able to think of other ways to exercise. The author of the invention also intends to protect the data of the embodiments of this application.

In the above and the following description describes aspects and advantages of the invention. The inventor intends to protect all mentioned and unmentioned advantages that this invention compared with the current level of technology, using the application and/or divisional application.

The invention will be described by SS the CTL in the description, when read in conjunction with the attached drawings, on which:

Figure 1 is a perspective view of a step-ladder;

Figure 2 is a view of a step-ladder in the future with the spatial separation of the elements, showing in more detail an implementation option of the support element with the locking element and drive mechanism;

Figure 3 is a side view of the locking element in accordance with the embodiment of the invention;

Figa is a side view of the support element shown in figure 3, in the position of blocking;

Fig.4b depicts a detail of the locking mechanism shown in figa;

Figa is a side view of the support element shown in figure 3, in the position of blocking;

Fig.5b depicts a detail of the locking mechanism shown in figa;

6 depicts a perspective view of the drive mechanism for actuating the locking element;

Fig.7 is a side view of the drive mechanism shown in Fig.6;

Figa is a side view of another variant implementation of the locking mechanism in the position of the block; and

Fig.8b is a side view of a variant of implementation in accordance with Figo in the unlocked position.

Figure 1 shows the ladder 1 in the prospects of the E. Ladder 1 contains two front supports 5A, 5b and two rear feet 5C, 5d. The front bearings 5A, 5b horizontally spaced from each other through several stages 6, which can be located at regular longitudinal intervals from each other. At the upper end of the two front supports provided bucket tray 9. The front bearings 5A, 5b, steps 6 and bucket tray 9 are part of the front frame. The rear feet 5C, 5d horizontally spaced from each other by two connecting rods 13. The rear feet 5C, 5d and connecting rods 13 are part of the rear frame. Front frame and rear frame pivotally connected to each other through point 8 of a turn. Top notch 7 connects the front frame with the rear frame and provides a solid and fixed angular position between the front frame and the rear frame. For this purpose between the front frame and rear frame are provided two intermediate element 14. The upper stage 7 may be connected to rotate with the rear frame means, well known to specialists in this field of technology. The upper level can be detached from the front frame, allowing the back frame to rotate relative to the pivot point to the front frame. Thus, the ladder can be folded position in which the rear legs are located relatively close is parallel relative to the front supports.

As shown in figure 1, each bearing 5A-d contains extendable section 10A-d support. Each system supports 5 and lengthen site support 10 forms a supporting element 2. Bearing can be considered as the first leg, and extend the area of support can be viewed as the second leg. Both legs are part of the support element 2. Each reference section 10A-d contains the leg 11a-d. Extendable sections 10A-d support can axially move relative to the supports 5A-d. On one side of the front support 5b is provided by the drive handle 3. As will be described below, the locking mechanism 200 is configured to lock the relative axial movement of extendable plot support and a support. The locking mechanism includes a locking element. The drive handle 3 is used to lock and unlock the locking element or locking mechanism 200. In position blocking extendable side support is not able to move relative to the supports. In the unlocked position or the trip position possible relative movement between the supports and extending parts of the supports. Extendable part is made with the possibility of extension for a certain length relative to the support. Length, which may advance, may be equal to, for example, 20 cm also available in other length is s.

In another embodiment, described table having one or more legs, in particular one or more swivel legs connected with him. The Central drive mechanism may be connected to the housing or tabletop.

Figure 2 shows the spatial separation element of a step-ladder 1, shown in figure 1. The same elements are denoted by the same reference position. In this drawing, the upper stage 7 and the front bearing 5b is removed, thus showing in more detail the drive mechanism 21 and the locking mechanism 200 ladders 1. Each extendable section 10A-d support includes a sliding rod 16, which is provided with the possibility of extension in the locking mechanism 200. Between the housing of the locking mechanism 200 and the lower part of the extendable section 10A-d supports connected spring 17. Another rod 15 is located with the possibility of extension in the locking mechanism 200 and extends to the top of the ladder 1. There rod 15 is engaged with a drive mechanism 21. The drive mechanism 21 includes two thrust 18. Each rod 18 is connected with the possibility of rotation between each of the front or rear legs. For example, the rod may be attached to the housing by means of bearings. Both thrust parallel to each other and connected through a connecting rod 19. At one end of the rod 18 contain what it handle 3. The handle 3 may be used for locking and unlocking the drive mechanism 200, as will be described below.

Figure 3 shows a side view of a variant of implementation of the part of the support element, containing the locking mechanism 30 with the locking element 34, 35. On figa-b and figa-b shows additional details of the support element 2, shown in figure 3. Figure 4 shows the locking mechanism 30 is in the position blocking. Figure 5 shows the locking mechanism 30 in the trip position. The same elements are denoted by the same reference position. The locking mechanism 30 includes a housing 32. It is noted that the locking mechanism and other details shown on the drawings schematically. These drawings are not to scale. As can be seen from figure 4 and figure 5, in the shown embodiment, the housing 32 is attached to the first support rack 22. The first leg 22 and second leg 20 are part of the support element 2. At one end of housing 32 is placed with retractable extension rod 33. Retractable rod can move in the axial direction. In the upper end of the retractable traction provides a stop to limit the extension (extension down) pull-out pull. Retractable rod 33 is connected with the bottom part 41 of support. Retractable rod 33 and the lower portion 41 supports are part of the second supports the th 20 hours. The lower part of the support 41 includes a stem 42 for sustainable accommodation ladder or other object containing the supporting element 2, in the in-use position. Around the retractable traction 33 is a spring 44. Spring continues between the outer side of the housing 32 and the upper part of the lower portion 41 of support. At the other end of housing 32 is to move the transfer element 31, such as a gear rod 31. The spring 43 is located in the body, while contacting with one end of the gear thrust 31. Higher transmission rod 31 also available with the ability to move in the guide block 46. The upper end of gear thrust 31 is engaged with the holding unit 50, which is connected with a rotary thrust 48. Clamping the side 50 and the pivot rod 48 can be rotated around the Central line of the rotary rod. It is possible that the angle holding unit based on the surface position of the blocking of the locking mechanism 30. For example, it is possible that the lower right corner of the propulsion unit 50 based on the guide block 46 and/or the upper right corner rests on the inner part of the first support rack 22 in position blocking the locking mechanism 30. This prevents rotation of the propulsion units in one direction. This ensures that only a small rotation, push the block, and accordingly, a small rotation of the drive handle 3 are sufficient to release the locking mechanism.

In the housing, the Cam 36 is connected with gear thrust 31 at the point 51 of the rotation. The Cam 36 can engage with the two tabs 34, 35. The latch 34 is provided at the upper end of the Cam and the latch 35 is provided at the lower end of the Cam 36. The top side 141 of the Cam is engaged with the latch 34, and the bottom side 142 of the Cam 36 is engaged with the latch 35. The Cam may be in the form of butterflies, i.e. contains two branches, which are located around the retractable traction 33. Each latch 34, 35 contains one side located in the groove 52, 53 of the housing. The latch 34, 35 can be tilted or rotated in the housing around the axis of rotation formed by the longitudinal direction of the groove 52, 53. It is noted that in the shown embodiment, the latch 34, 35 does not have a fixed axis of rotation in the housing. The latch is not connected to the housing and can move freely in the housing 34 and into the cavity 52. The outer end of the latch can be moved in the horizontal plane 52. This requires fewer parts, and thus the locking mechanism can be simplified without compromising tight and secure locking of the two support stands.

On fig.3b shows a perspective view of a variant implementation of the Oia latch 34. The latch includes a cavity 40 formed therein. Retractable rod 33 of the second supporting rack 41 is placed with the possibility of extension in the cavity 40 of the latch 34 (see figa). The cavity 40 may be cylindrical in shape, although other shapes. The latch contains the bounding surface 47. The bounding surface may contain internal shell cavity 40. Preferably, the guide surface includes an edge 45 of the cavity 40 with the outer surface 54 of the retainer 34. In the lower part of the retainer 34 has the same edge. In addition, the latch provided by other cavity 49, which may be the second U-shaped cavity 49.

Following actuation of the locking mechanism 30. In the position of the block shown in figa and 4b, the transfer rod 31 is in its upper position, and the point 51 of the rotation of the Cam 36 is raised. The outer surface of the Cam is designed to allow the latches 34, 35 to be rotated or pivoted to the center of the housing 32. When tilted, the various parts of the bounding surface 47 of the cavity 40 of the Cam 34, 35 will be in engagement with the sliding thrust 33. In this part two edges 45 on both sides of the cavity 40 will be in contact with a sliding thrust 33. Edges can compress the retractable rod. Edges can also be cut into the sliding rod 33. Adobecreative the creation of a high pressure locking and prevents relative movement of the two support stands. Thus, the opposite side of the perimeter of the second support columns 41, i.e. retractable thrust 33 are in engagement. This applies to the retractable traction 33. In the retractable rod 33 is pressed as to the housing 32 and to the bounding surfaces 47. Thus, the retractable rod 33 is clamped by the clamp 34 and the housing 32. Each point of contact will be to create a static friction which prevents the movement of retractable traction 33 in the housing 32. Therefore, it is impossible to move the retractable rod and, accordingly, it is not possible extension support.

It is noted that for the fastening of draught 33 may be just one of the retainer 34. Additional retainer 35 is longitudinally from the first retainer. This additional retainer in combination with the first latch 34 ensures a tight fit. In figure 2 you can see that the tabs 34, 35 are tilted in different directions. This prevents movement in both directions. In addition, there is a dense commit.

The springs 38, 39, which is provided next to the tabs 34, 35, also provide rotation or tilting of the retainers 34, 35 to the center of the housing 32. The springs 38, 39 provide pocomania retainers 34, 35 to the locked position. The springs 38, 39 also provide increased adhesion of the bounding surfaces 47 on the movable partition deadlift 33. This ensures a tight and secure fixation of the sliding thrust 33 in the locking mechanism. In the shown embodiment, the springs are parallel to and around the retractable traction 33 of the second support rack 20. This arrangement is compact and convenient and provides easy Assembly of the support element. However, other possible locations. Possible other means to bias the latch to a position blocking. For example, the spring, which is located about gear thrust 31 and is connected with both latches 34, 35, can be used to tighten two clamps 34, 35 to each other, thus shifting both of the clamp to the position of the block.

Unlocking the locking mechanism 30 can be implemented as follows. As a result of rotation of the propulsion unit 50 around the point 48 of rotation of the transmission rod 31 moves downward. As a result, the point 51 of the rotation of the Cam 36 will also move down. The Cam and the housing are arranged so that the move down will cause rotation of the Cam 36 around the point 51 of the rotation. The Cam 36 is located so that the combined movement causes the simultaneous rotation of the two clamps from the lock position to the trip position. Movement of the Cam 36 will cause movement of the upper and lower over the spines of the Cam 36, causing rotation of both of the clamps 34, 35 to the outer housing 32. In the bounding surface of the cavity will be located at some distance from the sliding thrust 33, providing the movement of the sliding rod in the housing 32. With this reliance ladders will be lengthened or shortened in the axial direction.

It is noted that in the position blocking the locking mechanism of the Cam 36 can rotate freely around the point 51 of the rotation. It is possible that the outer surface of the Cam are not in direct contact with the tabs 34, 35. In this case, you may need to move gear thrust 31 to bring the outer surface of the Cam in contact with the clamps, providing the movement of the latches to the trip position. This locking mechanism may be provided in the trip position only by the actual movement of the transfer rod. This ensures that the user intends to open the locking mechanism and prevents accidental opening of the locking mechanism.

In the unlocked position, the longitudinal axis of the cavity 40 is parallel to the retractable traction 33. This ensures that the area through which it can move the sliding rod 33 is maximum, i.e. has a maximum aperture for sliding thrust 33. If the volume can be prevented from inadvertently locking.

In the unlocked position, the spring 44 around the retractable traction 33 moves the extendable portion 41 supports the position of the extension. Preferably, the spring force is designed so that it balances the weight of the supported object. Thus, the unlocking of the locking mechanism 30 will only lead to lengthening of the extendable supports, without actual movement in the housing 32. Therefore, unlocking the locking mechanism does not lead to active shortening of the prolonged support under the action of gravitational forces. When using multiple poles, the force of each spring are chosen so that the total effort of the springs counterbalance the weight of the supported object. Many springs can each have a different force of the springs depending on the weight distribution of the supported object. An object such as a ladder, containing a number of supporting elements in accordance with this embodiment, it is relatively easy to install in any desired position. The force required to change the orientation of the object is relatively small, because the subject is more or less self-sustaining biased by the springs.

When removing the rotational force on the push block 50, the action of the springs 38, 39 about the tabs 34, 35 and the action of the spring 43 about gear thrust 31, will cause the th moving gear thrust up, thereby blocking the locking mechanism 30.

It is desirable that the object contains multiple extendable supports, such as a ladder, could operate via a Central drive mechanism. Figure 6 and 7 shows a variant implementation of the drive mechanism 60, adapted for this task. The drive mechanism 60 includes two rotary thrust 68 located at a distance from each other. Rotary traction 68 can be located predominantly in parallel in a flat surface, as shown in figure 4. Rotary traction 68 is connected through a connecting rod 64, 65. The connecting rod 64, 65 are connected with each rotary thrust 68 by means of the protrusion 66, 67. Each outer end of the rotary rod 68 are pushing blocks 62. Push the blocks are rigidly connected to the rotary rods 68. In the lower surface of each push block 62 provides for the transfer of thrust 63. In the shown embodiment, the transmitting thrust 63 engages with the lower surface of the push block 62, and the fixed connection between them is missing. Gear thrust 63 can be connected with the locking mechanism, as described above. At one end of one of the rotary thrust 68 by a handle 61. The handle can be used by the user to simultaneously bring the Deposit into effect the locking mechanisms several extendable support areas. It is noted that the drive mechanism shown in Fig.6, can be used in conjunction with any supporting element, regardless of the type of locking mechanism used in the reference element.

By rotating the handle 61 in the direction of the arrow A1 rotate the rotary rod. A rigid connection between the two steering rods, the connection is formed by a rigid connecting rod 64, 65, will also move in the direction of the arrow A2. This causes in the same way, the rotation of the second pull 68. Thus, both traction 68 will be rotated by the same angle. In addition, all the propulsion units 62 will be the same to rotate, thereby pushing each transmission rod 63 in a downward direction. As described above, moving down gear thrust 63 will allow the locking mechanism to go in the off position. This extendable pole may be installed in any desired way.

It is noted that the extension supports nothing to do with gear thrust 63. As can be seen from figure 2 transmission rod 63 will only be used to lock or unlock the locking mechanism extendable supports. Thus, it is noted that all of the legs can be extended independently of each other. In other words, the length of each support columns can be selected coverage is at ease. The length of one support does not impose restrictions on the length of the other leg. Thus, the user can adjust each of the extendable supports object any way you want. These degrees of freedom allow the user to set the object at the desired height (within the constraints of the extendable supports), and set the object at some angle relative to the base, on which stands the subject. An additional advantage is that the locking mechanism of each extendable support can be powered by a Central drive mechanism, allowing the user to conveniently install your subject. The object can be a table or a ladder, or any other object that receives a benefit from the use of extendable supports, such as tripod.

The reference element can be assembled relatively quickly and simply. The Assembly will be described with reference to figure 4 and 5. First, it may be a second leg 20. In the housing 32 can be placed retractable rod 33 by extending the lower end of the retractable pull through the top opening of the housing 32. During this stage can be equipped with two latch 34, 35 and two springs 38, 39. When the retractable rod is in place, the sliding rod can be installed spring 44. Then can be fixed bottom the part 41 of the second support rack 20. Then in enclosure can be fitted with gear rod 31 by extending thrust 31 in special upper housing bore 32. Install the spring 43. When the rod 31 and the spring 43 is installed in place, the Cam 36 may be connected and attached to the point 51 of the rotation. In addition, it can be installed guide unit 46. To a person skilled in the art it will be obvious that the placement of the retractable traction 33 and gear thrust 31 can be performed in a different order. The combination of the locking mechanism 30, the second support columns 20 and gear thrust 31 with the guide block 46 may be retracted into a hollow first support leg 22. Hollow first support can be an extruded profile. The housing 32 and other details can be aligned well-known specialist way and then can be attached to the second pedestal by means of fixing means, such as rivets.

On figa shows another variant implementation of the support or the support element 100, containing the locking mechanism 101. The housing 102 is installed in the first pedestal 103. The transmission element 104 is formed by thrust. It can be connected to the Central drive mechanism at a distance from the locking mechanism. Thanks to the rigidity of thrust movement in the drive mechanism can the t to be transferred to the locking mechanism 101. The transmission element 104 can be moved axially in the support 100 in accordance with the arrow 105. Moving can be directed through the housing 102 containing the corresponding channel, receiving the transmission element 104.

Element 109 displacement exerting effort displacement in the direction of arrow 110 on the transfer element 104.

The transmission element 104 includes the first pin 106. In addition, a hinge 107, which is connected with the Cam 108. The Cam 108 is based on the portion 112 of the housing.

From the positions shown in figa, the transmitting element 104 can be moved in the direction of the arrow 110 in the position shown in fig.8b. On figa shows the position of the blocking of the locking mechanism 101, and fig.8b shows the unlocked position.

If the transmission element 104 is moved, the Cam 108 will be rotated in accordance with the arrow 113 around the hinge 107. The tip 114 of the Cam 108 engages with the latch 120. Simultaneously, the pin 106 will engage with the latch 121. The latches 120 and 121 may have an implementation option, similar to that shown in fig.3b.

End part 123, 124 latches 120 and 121 are placed in the cavity in the housing 102 and provide the tilt latches in accordance with the arrows 125 and 126, respectively.

The tabs 120, 121 contain a cavity, placing the second support leg 130. Item 131 CME is to be placed, for example, the spring comes in contact with the housing 102 and the second base 130, creating a force of displacement in the direction of elongation of the support or the support element 100 in the axial direction. The second leg 130 is telescopically in the first pedestal 130 and is capable of moving in the axial direction 105.

In a position corresponding figa, the cavity in the latches 120, 121 are inclined, and the perimeter of the cavities will be in contact with the outer surface of the second support rack 130. If the angle is sufficient, the power of the clutch will lock the second support leg in position block, and bearing or support element 100 will have a fixed length.

An additional element 140 offset, in this embodiment, also, the spring surrounds the second support leg 130 in this embodiment. Element 140 bias comes in contact with both latches 120, 121 and creates a force in the axial direction, forcing the latches away from each other.

Moved into the unlocked position in accordance with fig.8b second leg 130 is able to move freely relative to the first support columns 103 or housing 102, and the length of the support 100 may be axially adjustable. Item 131 offset shifts in the direction of elongation.

Force offset in healthy lifestyles the NII movement can, for example, to match the weight of the support element 100. In the embodiment, the force displacement corresponds to the mass about the equilibrium position/length of the support 100. This will provide a "floating feeling", if the device with which it is interconnected bearing 100, is located on the surface.

The second leg 130 includes a limiter 133, which is able to come into contact with the housing 101, limiting the length of the axial extension.

From the unlocked position corresponding to fig.8b, the locking mechanism can be brought into position by blocking axial movement of the transfer element 104, allowing the clamps, offset element 140 offset, turn away in accordance with the arrows 125, 126 from each other.

In the release, support 130 has moved upward by a distance indicated by arrow 136. Part 135 of the support legs 130, directly connected with base, was sent to the first frame support columns 103 at the same distance 136 in retractable design.

By moving to a distance of 136 up, was overcome the force of bias from the coil spring 131, providing workload W. This can be done by the mass/weight of the ladder/table, which supports the bearing 100. Now the weight of the ladder/table supported the support 100 and ,in particular, a spring 131, causing a kind of floating feeling to the user pressing on the first support leg 101.

In the embodiment, an additional pin can be located on the transmission element on the other side of the latch 121.

In another embodiment, around the transmission element 104 between the latches 120 and 121 may be an additional element of bias, bias the latches 120, 121 in an inclined position figa.

Possible changes in the shown variants of implementation without departing from the basic idea of the invention. Obviously, the invention is described by using the preferred embodiments. The invention should not be limited to these options for implementation.

1. Supporting element (2) for the object containing the first support leg (22) and the second support leg (20), and the first support (22) is made with the possibility of axial movement relative to the second support rack (20) for axial elongation of the support element (2), with the first leg (22) includes a housing (32), made with the possibility of placing and second extension legs (20), the housing (32) includes a locking element (30)having a position blocking to block relative axial movement of the first support SRT is Ki (22) relative to the second support legs (20) and has a position opening for providing relative axial movement of support legs (20, 22)and the locking element (30) includes a latch (34)which is arranged to move through an angle in the housing (32) to alternately reach the lock position and the position of the opening of the locking element (30)with the latch (34) includes a cavity (40) to host the second legs (20)and the latch (34) contains the bounding surface (47)surrounding the perimeter of the cavity (40), and the bounding surface (47) is arranged to mesh with at least two opposing portions of the perimeter of the second reference the rack (20) in position locking the locking element (30)and the support element further comprises an element (44) offset to offset the support element (2) to the position of the axial extension.

2. Supporting element according to claim 1, in which the longitudinal axis of the cavity (40) is parallel to the second support rack (20) in the trip position.

3. Supporting element according to claim 1 or 2, in which an additional element (38, 39) offset is arranged to bias the locking element (30) to the position of the block.

4. Supporting element according to claim 3, in which the latch (34) is moved to the position of the block.

5. Supporting element according to claim 1, in which the locking element (30) includes an additional latch (35), is arranged to move through the tilt in the housing (32) to alternately reach the lock position and the position of the opening of the locking element (30), moreover, additional retainer (35) includes a cavity (40) to host the second legs (20)and the retainer (35) contains the bounding surface (47)surrounding the perimeter of the cavity (40), while the bounding surface (47) is arranged to mesh with at least two opposing portions of the perimeter of the second support legs (20) in position locking the locking element (30), and the bounding surface (47) of the tabs (34, 35) around the longitudinal portion of the second support legs (20).

6. Supporting element according to claim 5, in which the latch (34) and additional retainer (35) is made tiltable in opposite directions to position the block.

7. Supporting element according to claim 6, in which the element offset is located between the latch (34) and an additional latch (35) with the possibility of displacement of the tabs (34, 35) from each other.

8. Supporting element according to claim 7, in which the element offset is located around the support legs (20, 22).

9. Supporting element according to any one of pp.5-8, in which the locking element (30) includes a Cam (36)located in the housing (32), and the opposite side (141, 142) of the Cam (36) engages with two tabs (34, 35), the Cam (36) is configured to simultaneously rotate the two latches (34, 35) from the lock position to state the opening.

10. Supporting element according to claim 1, containing the transmission element (31)connected with the locking element (30)and the transmission element (31) is connected with a drive element (3)located on the support element (22) for actuating the locking element (30).

11. The support element according to claim 1, wherein the housing further comprises a Cam (36), which is in engagement with the retainer (34) to move the latch (34) from the lock position to the trip position.

12. The support element according to claim 10 or 11, in which the transmission element (31) is connected with the Cam (36).

13. The device contains a frame containing at least one support (5), and at least one support (5) includes a support element (2) according to any one of the preceding paragraphs.

14. The device according to item 13, in which the device (1) contains at least three pillars (5), and each contains an axially extending supporting element (2)made with the possibility of individual and selective axial extension relative to each other for installation of the device relative to a horizontal plane, each supporting element (2) contains the transmission element (31)connected with the locking element (30) of the support element (2), each transmission element (31) is connected to a Central drive mechanism (21) to simultaneously activate and deactivate the operation of each of the locking element (30).

15. The device according to 14, in which the drive mechanism (21, 60) contains the drive handle (3, 61)connected to the thrust (18, 68)attached rotatably to the frame, and the thirst (18, 68) contains at least two propulsion unit (62), which are located at a distance from each other, each propulsion unit (62) is arranged to mesh with one of the gear elements (63), and the drive mechanism (21, 60) is located so that rotation of the thrust (18 by rotation of the drive handle (3, 61) causes translational movement of the transmission element (63) via push push blocks (62), while the transmission element (63) is positioned so that the translational movement of the transmission element (63) causes the tilt latch (34) of the locking element (30).

16. The device according to 14, in which at least two supports are connected with the possibility of rotation relative to each other, while the Central drive mechanism (21) is configured to activate and deactivate the locking elements (30) in at least two supports connected with the possibility of rotation relative to each other.

17. The device according to item 13, in which the device (1) includes a support platform (7), which are down at least three supports.

18. Device according to any one of p-17, in which the device is olnine in the form of a step-ladder (1).