Light blinds

 

(57) Abstract:

Usage: in construction and can be used for both full and partial overlap of fenestration, such as residential or public open space. The inventive blinds contain a carrying case, a set of horizontal slats, bottom rail - cargo, flexible ladders that have slats and the bottom rail, the device for lifting the slats bottom rail, the brake unit fixing the slats and the bottom rail at a predetermined height, and the mechanism of the reversal of the slats in horizontal planes with the drive. The mechanism of the reversal of the slats is made in the form of a screw - rotating shaft and the carriage. This mechanism has the fastening elements of the rotary shaft of the carriage, flexible ladders, as well as elements of connection with him drive. A rotary shaft mounted on the drums, which are arranged in the support. The fastening elements of the ladder are made on the reels, in elements of connection of the drive mechanism of the reversal of the blades, made in the form of two flexible rods on the carriage. Other geometric parameters are built into the helical surface of the mating parts of the coil pair. The magnitude of the elevation angle of the helical line greater than angle trepetanie relates to a device type, a light-proof blinds with tilt-up slats.

Known tilt-up device sunscreen blinds, containing a horizontal shaft with turn coils, rods around the turn connecting the shading plates (lamellae) with the lower rail, and attached to the bottom rail, two traction lift. On a horizontal shaft mounted disc having a hub. In the disk made a hole located eccentrically relative to the longitudinal axis of the horizontal shaft. Through the opening indicated skipped thrust lifting, bending around the hub of the disk on opposite sides. Each of the lifting rods Bogota through his movie and skipped through the slots of the slats to the place of attachment with the lower rail. Horizontal shaft with coils, connectors and disk, as well as the rollers are accommodated in a bearing housing mounted in the upper part of the dimmable light openings, such as Windows. The free ends of the lifting rods released to the outside and equipped with handles. Exerting a force simultaneously on both ends of these rods, you can raise or lower the slats with the lower rail, and acting on one end, to deploy the slats in horizontal planes in the appropriate direction. This device is very easy. However, for fixing the slats of this device as traction lift on one of the elements bounding dimmable aperture (for example, tie up to the window sill), what determines the imperfection of known construction [1]

Known plate curtain, the ends of the lifting rods which are derived from the lifting body in the region of one of the ends of the casing, and the ends of the rotary rod in the area of the other of its end. Rotary thrust Abagnale through a roller mounted on the worm entered in coupling with worm gear sector mounted on a horizontal shaft. Such a device provides reliable fixation of the slats in any position defined by the angle of turn of the slats in horizontal planes [2]

However, this design does not provide non slats on the height of lift. To hold the slats at a given altitude (except for the extreme lower position), you must tie rod rise up against the wall that makes certain operational inconvenience.

There are blinds, the design of which allows to eliminate the above drawback. An example of this device can serve blinds with rope lock for U.S. patent N 4722383. Thrust lifting slats of this device before leaving the ends of the lifting body Abagnale the roller and passed through a gap formed between the said roller and floating toothed roller supported by the lever, the direction in the plane parallel to the vertical plane of symmetry of the blades, they act on the lever. The latter revolves around its axis and moves the toothed roller, pressing to pull around their movie. When the force is removed from the rods, slats and bottom rail tend to fall down under its own weight, pulling lifting thrust. The latter, in contact with the toothed roller, strive to expand it and to raise it even higher. This leads to a further reduction of the gap between the rollers and further preload rod to get around their roller that provides a secure fit slat height.

The attachment points of the upper ends of the ladders are also many varieties.

Among the known devices are used in a light-proof blinds with a turning device according to the patent Germany N 3313833 that and accepted by the prototype of the invention. Blinds-prototype have shaped bearing body is fixed in the upper part of the dimmable light aperture, a set of horizontal slats bottom rail cargo suspended by at least two flexible ladders, vertical movement of the blades and the mechanism of the reversal of the slats in horizontal planes. The latter is in the form of razmeshennoi can move along the lifting body. Screw pair is mounted at one of the ends of the bearing housing, through which is introduced in this case the shaft of the drive mechanism of the reversal of the slats. The screw is provided with stops limiting the stroke of the carriage in the other direction. As a support for the carriage and serve as the inner wall of the bearing housing. In the body of the carriage is rigidly fixed to the rod, for example a cylindrical rod located parallel to its helical surface and passing through the bearing housing. On the remote from the carriage end of the rod may have a bearing. Rod mounted two pairs of brackets with the slots for closing the upper ends of flexible ladders. The distance between adjacent ends of the brackets included in the same pair, just move the carriage from one extreme position to the other, which provides a turn slats approximately 90aboutrelative to their neutral position in the other direction. However, a pair of brackets located at the end of the carriage, the most remote from the end face of the bearing housing where this carriage, and the second pair at the opposite end of the lifting body. Both the upper end of each of flexible ladders introduced into the internal cavity of the bearing housing through the openings in the bottom of the hull, and Kahn, and the other in the nest of another bracket forming a pair of brackets. The longitudinal axis of the holes in the ends of the ladders are placed in the plane perpendicular to the longitudinal axis of the rod and which is the plane of symmetry between adjacent ends of the brackets included in the pair in the neutral position of the slats. The elevation angle of the helical line of the thread surfaces of the screw and carriage mentioned coil pair is less than the angle of friction in this pair that provides reliable fixation of the slats in the neutral position, or any intermediate position.

Shared between the known and the proposed device is that each of them contains channel type bearing housing mounted in the upper part of the light aperture, a set of moving in the vertical direction horizontal slats, fastened by at least two flexible ladders, and the mechanism of the reversal of the slats in horizontal planes with the drive located in the bearing housing. In each of these devices, the mechanism of the reversal of the slats is made in the form of a screw, a rotary shaft which is coupled to movable along a lifting body carriage, located in the region of one of the ends of this enclosure. In both slty connection to the drive.

By virtue of the known device is that it provides reliable fixation of the slats on the corner of their reversal in any of the desired positions.

In order to verify the presence of the disadvantages of the known device, consider the principle of its action. Rotational motion from the drive mechanism of the reversal of the slats is transmitted to the rotary shaft and then slide that getting straight along the lifting body movement. The carriage moves together with the rod having a great length (the entire length of the lifting body) that requires the support rod placed in the area of the end face of the bearing housing, the most remote from the carriage. This, in turn, requires high precision relative position of the carriage, rods and supports it, otherwise you may experience additional frictional forces in the contact points are moving relative to each other elements. Overcome the additional force causes the need to increase the capacity of the drive. This is one of the disadvantages of the known device, resulting in an increase in operating costs, i.e., negatively affecting its performance.

It is easy to see that the value of the angle is, easily before and after the holes in the bottom of a lifting body), which is significantly less than the value of an angle in similar known structures. This circumstance creates the worst conditions for the upper ends of the flexible ladder at the device-prototype than to other known constructions. Therefore, the upper ends of flexible ladders device prototype is exposed to increased wear. This is the second operational disadvantage of the known device.

It should be noted that the simplicity in the implementation process of the reversal of the slats to the desired angle depends on the speed of transfer (that is not related to the reversal of the slats in extreme conditions, as the presence of an emphasis on the screw ensures the receipt of such provisions automatically), i.e., from step screw or the rotation speed of the drive mechanism of the reversal of the slats. However, the reduction step to a certain value prevents the possibility of use as a material of the carriage plastics, thus deteriorating the manufacturability of the design, increasing the cost of its manufacture. Securing a small angular velocity of rotation of the screw requires the use of expensive drives a wide range of reg is sustained fashion element of the gearbox. All this complicates the design, increases the cost of manufacture. This is the third drawback of the known device.

Apart from the foregoing, it should be noted that in the known device is provided for use as a drive mechanism of the reversal of the slat unit working automatically, the motor. This design does not allow the use of manual drive mechanism for reversal of the blades, which would again reduce the cost of its manufacture. It certainly is not a disadvantage of the known device, as it is created, obviously, and the task was to control the mechanism of the reversal of the slats from a stand-alone drive.

The inventors in this case, only stating the possibility of creating a device with a manual drive mechanism for reversal of the blades, which would simplify the design, reduce its cost. They also argue that in some constructive activities of the disadvantages of the known device mentioned above, can be eliminated.

The purpose of the invention to reduce the cost of manufacture of the known device while improving its performance.

The put is in the upper part of fenestration, set movable in the vertical direction horizontal slats, fastened by at least two flexible ladders, and the mechanism of the reversal of the slats in horizontal planes with the drive located in the bearing housing and is designed as a screw, a rotary shaft which is coupled to movable along a lifting body carriage, located in the region of one of the ends of the latter, with the fastening elements of the rotary shaft, a slide, climbing frame, as well as elements of connection with him actuator, otherwise mounted rotary shaft and other elements mounting ladders and controls connection of the drive mechanism of the reversal of the slats.

Rotary shaft, the proposed device is mounted on the drums, and the latter is arranged in the support. The fastening elements of the ladder are made on these drums, and the connection elements of the drive mechanism of the reversal of the slats on the carriage. These signs are allowed to transfer control of the movement mechanism of the reversal of the slats in the proposed device from the carriage screw couples to the rotary shaft, and not Vice versa, which takes place in the known device.

In order to ensure a reliable fixation of the slats on the corner of their razvorot. Thus, the magnitude of the elevation angle of the helical line in the proposed device is greater than the angle of friction in the screw pair, not less, which is observed in the known device. This characteristic makes it possible to perform the automatic braking condition with the transmission in the direction of the screw-nut. At the same time, this characteristic allows the use of a screw pair with a large elevation angle of helix, for example, exceeding 45about. Thus, in the prototype of the device specified angle exceeds 88about.

This goal is achieved also by the fact that the proposed device is entered roller and bearing housing of this device is provided with a hole located between the carriage and nearby to it by the end of this enclosure. The movie offered to set on the other side of the carriage in comparison with the location of said hole.

Otherwise fulfilled, and the drive mechanism of the reversal of the slats. It is made in the form of two flexible rods introduced into the bearing housing through the said hole. One of these rods Bogota by the roller, included in the proposed device. The combination of these characteristics allows manual control of the work Megasite blinds contain bearing body mounted in the upper part of the light aperture, a set of moving in the vertical direction horizontal slats, fastened by at least two flexible ladders, and the mechanism of the reversal of the slats in horizontal planes with the drive. Some of the known devices control lifting-and lowering the pivot slats manually from the same two rods, and other lifting and lowering of the slats is accomplished by a pair of tie-rods, and the reversal of the slats at the expense of the other pair of rods. The mechanism of the reversal of the slats in the known devices are made differently. Thus, in the known device, a rotary shaft mounted disc having a hub. Through the hole in the disk is eccentric relative to the longitudinal axis of the shaft, skipped thrust, bending around the hub of the disk from different sides. In the known device the rotary thrust Abagnale through worn on the worm roller, a worm as introduced in coupling with worm gear sector mounted on the rotary shaft. In each of the last two devices on a rotary shaft mounted drums or rocker to secure them to the upper ends of flexible ladders, and themselves rotary shaft arranged in bearings.

There are also designs lighting blinds, which mechanize body carriage, situated in the heart of one of the ends of this enclosure. Part of the mechanism of the reversal of the slats have fastening elements of the rotary shaft, carriage and ladders and elements for connecting the actuator with the relevant part of this mechanism. As a support for the carriage and serve as the inner wall of the bearing housing and the rotary shaft is centered on the articulated with him the threaded surfaces of the carriage. The upper ends of the ladders attached to the brackets mounted on the rod, mounted on the carriage, and entered one by one into the bearing housing through a hole in its bottom.

The shaft of the Autonomous drive mechanism of the reversal of the blades (motor) is introduced into the bearing housing through the end of this enclosure and is connected to the rotary shaft. The magnitude of the elevation angle of the helical line (on the average diameter of the thread) screw pair this device is selected smaller than the angle of friction in this pair.

However, among all known designs of light blinds there is no such, in which the rotary shaft screw mechanism of the reversal of the slats was assembled in stacked drums bearings, and the drums would be placed elements fastening the upper ends of flexible ladders.

This novokurkino and availability on the carriage elements for connection to a drive mechanism of the reversal of the slats. There is no information about the presence of the mechanism of the reversal of the blades, screw pair which would be performed with the elevation angle of the helical line, the value of which would exceed the value of the friction angle in the screw pair. When performing a patent search was not found such a mechanism of the reversal of the slats with a screw pair, the drive which would be made in the form of two flexible rods, and therefore not aware of the signs that characterize the supply of these rods to the mechanism of the reversal of the slats. The authors suggest in the bearing housing to a drill hole located between the carriage and nearby to it by the end of this building, as part of the proposed device to enter the video setting it on the other side of the carriage in comparison with the location of said hole.

Flexible traction in the proposed device is introduced into the bearing housing through the said hole, one of these rods Bogota at the above video.

The combination of all these features is a new, not described so far in the sources of patent and scientific literature. Since the novel features of the device allow p the different qualities, it allows to make a conclusion about the improvement of the technical characteristics of the known device. This suggests that the proposed device is new and improved technical level, compared with the characteristic of a device prototype. In other words, the technical level of the device corresponds to inventive step.

In Fig.1 shows the proposed blinds, longitudinal section; Fig.2 section a-a in Fig.1; Fig.3 cross-section B-B in Fig.1; Fig.4 section b-b of Fig. 1; Fig.5 section G-G in Fig.1; Fig.6 is a view along arrow D in Fig.1.

In the trough-shaped bearing housing 1 (Fig.1 and 2) mounted lifting slat 2 together with the lower rail-cargo 3, the brake device for locking the slats in the vertical plane (height dimmable light openings, e.g. Windows), the mechanism of the reversal of the slats in horizontal planes, the bed 4 and 5 (see Fig.1) and at least two supports 6.

In the present case there are three such support. The number of poles depends on the width of the light aperture. The composition of the lifting device includes two lifting flexible rod 7 and 8, two rollers 9 mounted swivel posted and 4. Each of the flexible rods of the lifting rod 7 and 8 is fixed by one of their ends to the holder 13 mounted in the socket located on the bottom of the bottom rail 3, skipped through the Central slots of all of the slats 2 and introduced into the internal cavity of the bearing housing 1 through the groove in the bottom of the supports 6, in the area of the rollers 9 (Fig.1 and 2). Lifting thrust Abagnale on its roller 9 (see Fig. 1) connected to the roller 11, Abagnale on this roller and removed from the internal cavity of the bearing housing 1 to the outside through the slots present at the bottom of the bed 4. When this lifting thrust passed through a space bounded by an end surface 14 of the recess of the lever 15 and the floating toothed roller 16. Released from the carrier body 1 of the free ends of the lifting rods 7 and 8 reinforced handle 17.

The braking device is designed as a lever 15 fixed in the wall of the bed 4 by using the axis 18 with the ability to swing around this axis, and floating toothed roller 16 supported on the surface of the groove of the lever 15.

The toothed roller 16 is equipped with mechanical cylindrical protrusions (Fig.3), which entered into inclined grooves 19 that are available in the side walls of the bed 4, with freedom of movement along these grooves and rotation varroatosis in the bottom of the bearing housing, and fixed against vertical displacement of the spring plate 20. The mechanism of the reversal of the slats is made in the form of a coil pair of the rotary shaft 21 and the carriage 22 (see Fig.1).

The helical surface of the rotary shaft and sochlennenie with her carriage is placed in the gap formed by the two legs 6, located in the area of the bed 5. The magnitude of the elevation angle of the helical line on the middle screw diameter surface of the specified pair more than the value of the friction angle in this pair. A rotary shaft mounted on the reels 23, which are arranged in a support 6 having a U-shaped form. Moreover, nests under the drum 23 is made in the vertical walls of the support 6. Cross-section of the socket is a segment of a circle with a Central angle greater than 180aboutso that the width b of the neck of less diameter mating with the socket, the surface of the drum 0.3-0.8 mm (Fig.4). In the wall of the bearing cut the groove 24. His centering the lower ledge bearing 6 is installed in the groove on the bottom of the bearing housing 1, in the same way as set bed 4 (see Fig. 1 and 5). Spring plank 20 fixes the support 6 in a bearing housing, preventing its displacement in the vertical direction. Two supports 6, between which is placed a carriage 22, seeding groove, cut from the side of its bottom (see Fig.1).

The intermediate platen 26 is a continuation of the rotary shaft 21. One end fixed in the same drum 23, which is the end of the rotary shaft, and the other in the drum 23, arranged in a bearing 6 located in the area of exit of the lifting body 1 thrust 7 lifting.

At some distance from the ends of the carrier body has two flexible ladder 27 (Fig.1 and 5), on the steps which laid the slats 2 and the lower rail 3. The upper ends of these ladders is introduced into the internal cavity of the bearing housing 1 through the slots cut in the bottom extreme of the supports 6. Each end of the ladder connected to the outer surface 28 of the Central part of the drum 23 with mutually-opposite directions, 'd proceed around on this surface and fixed thereto. Moreover, the fastening is performed by the host unit, performed at the end of the ladder in the groove 29 of the drum 23 (see Fig.5).

In the wall of the bearing housing 1 has a hole 30 (see Fig.1 and 6), located between the end face 31 of the housing and the carriage 22. Opposite this hole inside the housing 1 a b 5 having two slots 32 (Fig.6). In the support 6, which is the second in counting the supports from the end face 31, is mounted a roller 33 (see RSA 31 of the bearing housing, there are openings 35 and 36 (Fig.6).

The drive mechanism of the reversal of the slats is made in the form of two flexible rods 37 and 38, entered into the bearing housing through the opening 30. Thrust 37 and 38 are stacked one by one into the slots 32 of the bed 5. The end thrust 37 passed through the hole 35 of the support 6 and are fixed by means of the node in the hole 34 of one of the end notches of the carriage 22 (see Fig.1). The end thrust 38 passed through the hole 36 (see Fig.6) support 6, 'd proceed around the roller 33 (see Fig.1) and fixed by a node in the hole 34 of the other end of the ledge of the carriage 22. On emerging from the bearing housing ends of the flexible rods 37 and 38 fixed handle 39. Through the hole 30 in the bearing housing can be inserted box with hole pull 37 and 38 and with the slots 32 instead of the bed 5, which is a variation of the input structure flexible rods 37 and 38 in the bearing body 1.

We offer light protection blinds work as follows.

Applying force to the handle 17, is directed vertically downwards, move it down while pulling out of a lifting body lifting thrust 7 and 8. The last result in rotation of the rollers 11 and 9. The lower ends of the rods 7 and 8, mounted on holders 13, rise up, thus shifting up the lower rail 3. As lifting the bottom rail 3 being able to this rail and continues with her to shift upwards. Then the slats alternately one after the other, starting from the bottom, stacked one over the other, shifting up until then, until they are stacked, which corresponds to the full open length of the opening. If you specified the extreme upper position of the slats or at any of their intermediate positions to remove the force from the handle 17, under the action of the total force of gravity arising from mass vertically moving parts (bottom rail 3 holders 13, the slats 2), these items start to drop and occupy the lowest position in which the lower rail 3 will be either below the lower rail 3 and the blades, or at the correct height (in any extreme or intermediate position). Then you need to take the handle 17 in the direction of the arrow E, not removing her efforts supporting these parts at a given altitude. When this lifting thrust 7 and 8 are in contact with the end surface 14 of the recess of the lever 15 and deploy this lever in the direction of the arrow F around the axis 18. The lever 15 moves the toothed roller 16 obliquely upward along the groove 19 to the point where lifting thrust 7 and 8 are clamped between the roller 11 and the toothed roller 16. If you now remove the force from the handle 17, the total force of gravity from the masses ve the arrow 3. Under the action of friction forces arising between the contacting surfaces of the lifting rods 7 and 8 and the toothed roller 16, the latter, turning around its longitudinal axis, begins to climb up the groove 19, further getting jammed lifting thrust 7 and 8. Due to this fixation vertically moving parts in any given height of fenestration position. To lower the bottom rail, slats from a fixed position, must be applied to the handle 17, the force directed vertically downwards. In this area begin to shift and lifting thrust. In this issue of the friction force between the lifting rods and toothed roller cause the latter to descend in an oblique groove 19. Removing the force from the handle 17, the lower plate 3 and the other vertically moving parts begin to fall down.

In order to cover fully or partially illuminated aperture at the position vertically moving parts, fixed by means of a braking device at any height relative to the lower plane of the light aperture, it is necessary to operate the mechanism of the reversal of the slat 2. To do this, pull down on one of the handles 39 (see 1 and 5), for example the handle, saklani end 31 and moves until until it is removed, the force from the handle 39 will rest against the support 6. The force from the helical surface of the carriage is transmitted to dump her screw surface of the rotary shaft 21. The axial component of this force is balanced by the support 6, and the tangential begins to deploy the rotary shaft 21 and the intermediate roller 26, together with the reel 23 in the direction of the arrow (quite possible reversal in the opposite direction that depends on the direction of screw surfaces of the rotary shaft and carriage). Specified spread out until until moving carriage. Pin 25 prevents angular displacement of the carriage. In the process of turning the upper end of one of the poles of each flexible ladder 27 is wound on the drum 23, and the other leaves it. Due to this, one stands a flexible ladder is drawn into the bearing housing is moved vertically upward, and the second goes from the chassis (lowered vertically down). This rise and fall and the corresponding ends of the stairs flexible ladders, turning around horizontal axes of the slats. When the position of the carriage 22, corresponding to the moment of its contact with the right support 6, the slats will be at put what oscott of this opening (see Fig. 2 and 5), (image dash-dotted lines). If the movement of the carriage will stop until its contact with the right support 6, between each pair of adjacent slats will be formed by the slit, which corresponds to the partial overlap of the corresponding area of fenestration. In this case, the wall forming the slit will be directed from top to bottom when viewed on the arrow To the louvers of the substituted premises. If the force applied to the handle 39, located on the deadlift 38 to remove and attach it to the handle 39 is mounted on the rod 37, the direction of movement of the racks flexible ladders 2 is reversed and the carriage 22 will change the direction of its movement: she moves away from the right support 6 to the other side of the same support until it is in contact with this support or termination of the effort applied to the handle 39. Change the direction of their rotation and parts 21, 23 and 26. By moving the carriage slats 2 will gradually return to the original neutral position corresponding to the open length of the opening. Then the slats begin to block the light aperture, overturning his other walls to the inner volume dimmable premises, and upon contact canadianwomen slit, will be directed in the direction of arrow L from the bottom up, looking at the blinds of dimmable premises. In the absence of control the reversal of the efforts on the handles 39 a flexible rods 37 and 38 of the slats will be held in the fixed position even if the slats or posts ladders will be accompanied by a random force. This is achieved by the locking screw in the direction of the screw-carriage.

During operation of blinds rotary shaft 21 and the intermediate roller 26 with their reels 23 to hold the supports 6 in a horizontal position, as the width of the neck of the nest under the boarding cylinder less matched with the diameter of the drum.

In order to collect the proposed lighting louvers, it is necessary to fix the lower ends of the flexible lifting rods 7 and 8 in the holders 13, and the last set in the slot of the bottom rail 3 with the output rod from the internal cavity of the bottom rail through the opposite from its bottom wall. The slats 2 and the lower rail 3 is inserted into the rung of a flexible ladder 27, and the free ends of the flexible lifting rods 7 and 8 are passed through the Central slots of all lamellae. Mechanical cylindrical protrusions toothed roller 16 is injected from the bottom in Naklua around her. Moreover, the lever 15 is positioned so that the surface of its neck was supported by the toothed roller 16 from falling out of the groove 19. Fix the rotary roller 11 in the groove of the bed 4 by using the axis 12. In one of the supports 6 are mounted rotatable on the axis 10 of the roller 33, and the remaining supports of the rollers 9 with the same axis 10. Two supports 6, which should be placed in the area of the end face 31 of the bearing housing 1, you have your holes on the ends of the rod 25. The left support 6, as well as support 6 mounted on the rod 25, together with installed components injected into the internal cavity of the carrier body 1 through its open ends. Combining the Central bottom ledge of each of the pillars with a groove in the bottom of the bearing housing 1, make every effort to supports directed vertically downward, and introduce them to the tabs into the slots in the chassis. Moreover, the support 6 with the roller 33 of the second set when counting from the end 31 of the bearing housing. Fixed support 6 against vertical displacement by means of the spring strips 20. Bed 4 together with installed in her details and bed 5 is injected into the internal cavity of the carrier body 1 through its open ends and secured in the housing by means of spring bars 20, similar to the way were fixed support 6. Released from the slat supports 6 in the area of the rollers 9. Thrust 7 and 8 need to round over the outer surface of the rollers 9 and 11, to enter into the gap between the end surface 14 of the lever 15 and the toothed roller 16 and to release from the internal cavity of the bearing housing 1 through the slots present at the bottom of the bed 4. On the acting from the supporting body 1, the ends of the flexible lifting rods 7 and 8 secured to the handle 17. The carriage 22 is necessary to screw on the screw surface of the rotary shaft 21. On the ends of the rotary shaft 21 and one end of the intermediate shaft 26 put on the drums 23 and the second end of the intermediate roller is installed in the same drum 23, in which is mounted the end of the rotary shaft. Combine cervical drum 23 with the openings of the supports 6 and the groove provided on the bottom of the carriage 22 with the rod 25. Put on the drums 23 downwards force of such magnitude that the walls of the supports 6, elastically deformed, bent, allowing the occurrence of the cylinder drum 23 in praguerie with them nest supports 6 and the rod 25 into the groove of the carriage 22. The width of the slots 24 is reduced by the same amount, which increases the width of the mouth of the nests under the reel 23. After the occurrence of the drum 23 in their nests wall supports take its original position and prevent displacement of the rotary shaft 21 and intermediate the current housing 1. Through the slots cut in the bottoms of the supports 6, the end of each column sum up to the outer surface 28 of the Central part of the drum 23 with mutually opposite sides, are bent on this surface and, tying the knot, put it in the corresponding groove 29 of the drum 23. (Instead of node, you can perform any other thickening, such as opravit the end of the bar). Fix the lower rail 3 and the slats 2 in the upper end position, using the brake device. Fix the bearing housing assembled louvers upper edge dimmable opening. The offered blinds are ready to work at the place of their operation.

We offer light protection blinds, according to the authors of the proposed invention, better device prototype. This opinion is due to the fact that due to the proposed design not only managed to reduce the cost of its production, but also to improve performance. Proposed by the authors of the features related to the implementation of the replacement of the transmission direction of the control movement when turning the slats of the screw to the carriage in a direction from the carriage to the screw, increase the value of the elevation angle of helix of the adjacent coil pair. This, in turn, opens up opportunities for ovulate as the material of the carriage molded plastic. This allows us to improve manufacturability of the design and reduce manufacturing costs. The accuracy of adjustment in the proposed device does not deteriorate, since the conditions of the regulation are improved with the increase of the elevation angle of the helical line. Working conditions of the device is improved due to the replacement of long, moving forward rod rotating around its longitudinal axis of the intermediate roller. The abolition of the rod has also made it possible to increase the angle made between the areas of the upper ends of the uprights flexible ladders lying before and after the conclusion of the lifting body. This helped to reduce the friction force between the uprights of the ladder and a bearing housing or supports, as in the proposed case), to reduce wear of the ladder, increasing their service life. Simplifying the design and reducing its cost, achieved by replacing expensive stand-alone drive mechanism of the reversal of the blades on the flexible rod, manually managed.

LIGHT BLINDS containing channel type bearing housing mounted in the upper part of the light aperture, a set of moving in the vertical direction horizontal slats, fastened by at least two flexible is, made in the form of a screw, a rotary shaft which is connected with movable along a lifting body carriage, located in the region of the ends of the latter, and having fastening elements of the rotary shaft, a slide, climbing frame and elements of connection with him actuator, characterized in that the bearing body is made with a hole located between the carriage and nearby to it by the end of this housing, and rollers mounted on the other side of the carriage and compared with the location of said hole, a rotary shaft mounted on the drums, and the connection elements of the drive mechanism of the reversal of the slats on the carriage, the actuator is made in the form of two flexible rods that are included in the bearing housing through the said hole, one of the flexible rods around the roller, thus the value of the elevation angle of helix of the adjacent coil pair is selected that exceeds the value of the angle of friction in this pair.

 

Same patents:

FIELD: construction.

SUBSTANCE: window closing facility comprises a driving device - a spring with a permanent coefficient of stiffness, which is adapted to apply a substantially permanent rotary force to the axis of the drive, a unit of cord winding, a pressing accessory. The unit of the cord winding is coaxially installed on the driving axis, comprising at least one winding drum, functionally joined with the second end of the cord for lifting and having a conical section, a rotary mounting element to move a window unit of cord winding sideways along the axis of the drive as the mounting element rotates to transform the rotary force along the axis of the drive into the lifting force to the cord for lifting, in which the force directed upwards is higher than the force directed downwards, applied with an element of a curtain and a lower guide along the whole range of opening and closing. The pressing accessory or a blocking element, is functionally connected to the axis and is adapted to unlock the drive axis in the required position.

EFFECT: invention will make it possible to prevent damage of a window closing facility.

20 cl, 23 dwg

FIELD: construction.

SUBSTANCE: window closing facility comprises a driving device, such as a a spring with a permanent coefficient of stiffness, which is adapted to apply a substantially permanent rotary force to the axis of the drive. A cord winding unit is coaxially installed on the driving axis and includes at least one winding drum, which is functionally connected with the second end of the cord for lifting and has a cone section, and also a rotary mounting element to move the window cord winding unit aside along the axis of the drive while the mounting element rotates. The cord winding unit is adapted for conversion of the rotary force at the drive axis into a lifting force at the cord for lifting, in which the force directed upwards is more than the force directed downwards, being applied with a curtain element and a lower guide in the entire range of opening and closing. A pressing accessory or a blocking element, also functionally connected to the axis and adapted to unlock the drive axis in the required position.

EFFECT: increased operational reliability.

12 cl, 15 dwg

FIELD: construction.

SUBSTANCE: louvers for selective closing of an architectural opening, comprising: a head cornice; large quantity of plates suspended from the head cornice, including large number of pairs from upper and lower adjacent plates; the first and the second belt stairs, stretching downwards from the head cornice. At the same time each of the first and second belt stairs comprises a front cord of inclination, a rear cord of inclination and large number of transverse cords, stretching between appropriate front and rear cords of inclination, besides, transverse cords of the first belt stairs retain the upper plates of each pair from upper and lower adjacent plates, and transverse cords of the second belt stairs retain the lower plates of each pair of upper and lower adjacent plates, at the same time each of cords of inclination has the first end; a shaft of inclination; the first and second cams installed on the shaft of inclination and fixed relative to it for rotation with the shaft of inclination. At the same time the first and second cams are in engagement with the first ends of the front and rear cords of inclination of the first and second belt stairs providing for motion. Besides, rotation of the shaft of inclination provides for lifting and lowering of the front and rear cords of inclination of the first and second belt stairs for displacement of the plates from the first position, in which the upper and the lower adjacent plates of each pair are arranged above each other in the open position with double pitch, into the second position, in which pairs of the upper and lower plates are in closed position when inclined.

EFFECT: possibility to open or close plates of louvers when inclined with production of a row of different configurations, including a configuration with double pitch, depending on tracing of cords of inclination and driving cords.

16 cl, 81 dwg

Louvres // 2571030

FIELD: personal use articles.

SUBSTANCE: invention relates to louvers, in particular to a lifting mechanism for the louvers. The lifting mechanism for the louvers, having pairs of cords (7) of lifting for lifting or lowering the louver plates (2), comprises two drums (9, 10). One cord of a pair of cords of lifting is wound on the outer peripheral surface of one drum (9) during rotation of this drum (9) in a first direction and is unwound from the said surface during rotation of this drum (9) in an opposite second direction. Another cord of a pair of cords of lifting is wound on the outer peripheral surface of the other drum (10) during rotation of this drum (10) in the said first direction and is unwound from the said surface during rotation of this drum (10) in the said opposite second direction. Two drums (9, 10) are connected through the central connection with the ability of rotation to each other. The mechanism has a central part, in which the cords (6) of inclination are operatively coupled with the said central connection.

EFFECT: ensured reliability of operation of the louvers without the risk of entanglement of the cords.

16 cl, 45 dwg

FIELD: machine building.

SUBSTANCE: control unit window curtains comprises drive shaft, sleeve fitted on drive shaft, retaining device arranged around sleeve. Locking device has locking state in which it blocks rotary movement of bushing and drive shaft to hold shadowing structure of window curtain in desired position and unlocked state in which provides for rotation of bushing and drive shaft for vertical adjustment of shading structure. Release unit includes drive, operatively connected with locking device. Drive includes rod having elongated shape extending vertically along longitudinal axis. Unit includes drum for cord and control cable connected to each other; and coupling is operatively connected with drum for cord. Coupling is made with possibility of connection and disconnection of drum for cord relative to drive shaft. Control cord is pulled to actuate drum for cord and switching clutch in connecting state, to transfer rotation of drum for cord through coupling in connecting state to actuate bushing and drive shaft to lift shading structure. Rod is made with possibility of rotation around longitudinal axis for switching of locking device from locking state into unlocked state to lower shading structure by gravity. Window curtain comprises top rail shadow design, lower part, suspended cords connected to cord winding units, and control unit.

EFFECT: ease and safety of operation.

21 cl, 34 dwg

FIELD: machine building.

SUBSTANCE: control unit window curtains comprises drive shaft, sleeve fitted on drive shaft, retaining device arranged around sleeve. Locking device has locking state in which it blocks rotary movement of bushing and drive shaft to hold shadowing structure of window curtain in desired position and unlocked state in which provides for rotation of bushing and drive shaft for vertical adjustment of shading structure. Release unit includes drive, operatively connected with locking device. Drive includes rod having elongated shape extending vertically along longitudinal axis. Unit includes drum for cord and control cable connected to each other; and coupling is operatively connected with drum for cord. Coupling is made with possibility of connection and disconnection of drum for cord relative to drive shaft. Control cord is pulled to actuate drum for cord and switching clutch in connecting state, to transfer rotation of drum for cord through coupling in connecting state to actuate bushing and drive shaft to lift shading structure. Rod is made with possibility of rotation around longitudinal axis for switching of locking device from locking state into unlocked state to lower shading structure by gravity. Window curtain comprises top rail shadow design, lower part, suspended cords connected to cord winding units, and control unit.

EFFECT: ease and safety of operation.

21 cl, 34 dwg

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