Seat structure

FIELD: personal use articles.

SUBSTANCE: invention relates to the structure of seats with adjustable slant or tilt. The seat structure includes a support frame, a seat and a back. The seat includes the seat frame, formed by the side pieces, the front cross piece and the rear cross piece and pivotally connected to the support frame by means of at least one attachment mechanism positioned below the seat surface. At least one balancing spring is installed between the seat and the support frame, containing the first and second side elements as well as the front and the rear frame elements. The attachment mechanisms are installed symmetrical relative to the seat as compared to the seat central axis so that the pivotal joint axis passes between the knees and thighs of the user sitting on the seat structure in a conventional posture, with legs parallel and tilting on the seat back. The attachment mechanism is positioned between the side pieces of the seat and the side elements of the support frame.

EFFECT: enhanced comfort of the user accommodation of a device containing such seat.

8 cl, 11 dwg

 

The technical field to which the invention relates.

The present invention relates to the seat structure for a couch, chairs, sofa (chaise longue) or so on, In particular, the invention relates to the design of the seats with adjustable inclination or tilting.

The level of technology

From DE 10200401 A1 famous couch, where you can recline the seat by means of a lifting device installed on the rear edge of the seat. However, such tilting mechanism is only suitable for the conversion of the seats in an inclined pillow for back support.

In addition, in some models a series of couches StressLess produced by the applicant, the seat and the backrest is provided by curved guides that allow you to push forward or to lift each seat.

However, all known solutions are very complex and contain many interacting elements. This contributes to the rise in the cost of production and, consequently, leads to the high price of the product, and may also restrict the range of comfortable conditions" of the product, i.e. the position in which the user is comfortable to sit or lie on the couch.

Disclosure of inventions

The objective of the invention is the provision of a couch or other furniture for sitting/lying, which creates comfort by regulating the angle of inclination of the seat b is C limit positions, user-friendly, or a substantial increase in the price of products.

This task is solved by the seat structure according to paragraph 1 of the claims, which are suitable for use in the couch, chair or sofa.

Brief description of drawings

The following is a more detailed description of the embodiments of the invention with reference to the accompanying drawings, on which:

Fig.1 is a perspective view of a design seats with adjustable tilt, remote roller,

Fig.2 is a side view of the seat structure with the remote side wall,

Fig.3 is a corresponding side view with tilt seat down,

Fig.4 is a front view of the seat structure,

Fig.5 is a top view of the seat structure,

Fig.6 is a top view of a longitudinal section and side view of the sofa with the design of the seat according to the invention; sofa shown without rollers, with a seat in the first flat position,

Fig.7 is a sofa with a seat in the second position,

Fig.8 - detail of the sofa; used elastic element, and a perspective view, b is a view in section,

Fig.9 and 10 species in the future examples of furniture comprising a seat construction according to the invention and implemented as a couch and sofa, respectively.

The implementation of the invention

In Fig.1 shows the structure of a seat according to the invention. As shown in the drawing, two is Denia installed next to each other, forming a double sofa. The invention relates to the seat structure, which can be used as a main component in any furniture designed for sitting. The drawing shows only the body, seat and backrest. When used in chair or sofa are provided and sides, cushions, pillows, etc.

Design 1 seat includes a base frame 2, a back 3 and seat 4. Support frame 2 consists of four vertical plates forming a rectangular box with an open top and bottom. This base frame is designed for mounting components that make up the furniture, in particular the seat 4, the backrest 3, the legs 5 and so on, With each support frame includes first and second side elements 2A, b, and front and rear elements 2C, d frame.

Seat 4 includes a frame 6 of the seat, the spring 7 of the seat and at least one hinge mechanism mounting. In this embodiment, the frame 6 of the seat has a square shape with four sides formed by two essentially straight mutually parallel front and rear cross-beams 9a, b, one of which runs next to the backrest 3, and the other parallel to it, along the front side of the frame, and two angular or curvilinear mutually parallel side walls 10A, b. Springs 7 seat tightening frame 6 of the seat between the front and rear priest who uchinami 9a, b, forming a springy surface for pillows or so on the retention Mechanism is made of two hinged devices 8A, b mount installed on the lateral elements 2a, b for attaching the seat 4 to the base frame 2. In the embodiment shown in the drawing, the frame of the seat includes a third cross member 10C that extends beyond the perimeter of the seat frame at the ends of the specified cross suspended in the devices 8A, b mounting on a support frame. The fastening device made in the form of thrust blocks, made of a suitable material, in particular made of wood or metal, but preferably of plastic material. The cross member increases the rigidity of the seat frame. In an alternative embodiment to the frame of the seat can be attached to short lengths of pipe on which set of fastening device.

In the embodiment shown in the drawing, the device 8A, b devices are applied asymmetrically to the seat 4 relative to the Central axis passing through the seat, so the axis of the hinge will be held between the knees and thighs of the user sitting on the seat in a normal position, with your feet parallel and leaning back on the backrest. The fastening device can be installed, for example, at one-third the distance from the front of the seat. The objective of the invention is the location of the device is ist mounting thus, to ensure amoureusement fold back. The fastening device preferably does not contain stoppers or brakes, so the slope is limited to fastening devices and their location in combination with springs.

The clamping mechanism also ensures obtaining essentially horizontal position of the seat when the user is on it, and tilt the seat down in the back, when the user sits down. The seat tilts backwards, i.e. to the back, at an angle greater than 0 degrees, preferably from 0 to 10 degrees, more preferably from 3 to 7 degrees, from 2 to 6 degrees, from 4 to 8 degrees, or from 4 to 6 degrees and most preferably about 5 degrees relative to a horizontal surface.

Samorganizovatsya installation angle of inclination of the seat increases the feeling of comfort for the user in sitting and in supine position.

In Fig.2 shows a side view of the seat structure according to the invention, the side wall of the supporting frame removed. Curvilinear sidewall 10A, b include end part 11a, b, bent back outside the seat frame. End part 11a, b are located between the two end supports or surfaces 12, 13, which are below the backrest. End stops 12, 13 limits the angle of inclination of the seat 4, as the sidewalls are based on in which of rhny end stop 12 in the horizontal position and the bottom end stop 13, when the seat is tilted down toward the rear. However, the seat 4 can also stop in the intermediate positions between the end stops, if it provides balance to the user.

In Fig.4 shows a front view of the folding seat 4. In the seat structure shown on the left seat 4 has a slope down while the seat is in the design shown at right, is horizontal. One or more counterbalancing springs 14 mounted between the support frame and each of the sidewalls 10A, b or rear cross member 9b. If the seat is not loaded or not loaded to change the balance, balancing springs 14 are pressed seat 4, while holding it in a horizontal position. Thus the horizontal position means the unloaded or passive position in which the seat, if it is not busy. It should be noted that in the passive position of the seat may also have a pre-determined angle relative to horizontal.

In the embodiment shown in Fig.4, each end part of the side walls 10A, b are provided balancing spring 14. Spring is installed under the lower limit stop 13 and the terminal part of the sidewall, respectively. When the seat 4 is loaded, the part located at the rear, pressed and compresses the spring. Thus, the seat with some of the resistance which the group will be tilted down to the backrest 3. The user will have the impression of "immersion" in the seat, which will increase the feeling of relaxation and comfort. If the user wants to go (here we assume that the design of the seat is used in sofa, consisting of several seats, connected in series with each other), the weight distribution of the user on the seat 4 will change, i.e. the centre of mass of the user will be shifted such that the resistance of the balancing springs 14 will be pressed against the seat 4 up and restore the essentially horizontal surface of several of the seats, which will provide a convenient location, for example, for an afternoon NAP.

Instead of corner balancing springs, as shown on the drawings, you can use spiral springs, leaf springs or elastic elements. You can also use one spring disposed either in the middle of the rear cross member, or with a relative shift to the middle. Counterbalancing springs can also be placed in the mounting device and/or in combination with, for example, in the form of a torsion spring.

In another embodiment (not shown), the retention mechanism includes one or more hinges mounted on the seat (with its lower side, the said hinges are attached to the rod passing between the side elements of the support frame.

As is shown above, the design of the seat according to the invention can be used in several types of furniture. In Fig.6 shows the sofa, using the specified design of the seat. To the front of the seat to pivot points 17A, b attached to the hinged portion 16. The opposite end of the hinged portion attached to the base frame 2 at pivot points 18a, b of the fastening. When the seat 4 is tilted in one direction, the hinged portion 16 is tilted in the opposite direction, forming a fold in the surface of the seat and the bulge near the knees of the user occupying the sofa. If the user lies down on the sofa, the seat returns to a passive position, forming a straight continuous surface suitable for sleeping one person to seat multiple users or for partial support users on the sofa.

In Fig.7 shows the sofa with a seat 4 in the second position, where the seat is tilted down in the direction of the backrest 3. When the inclination of the seat back cross member 9b, the closest to the backrest 3, leans down, while the front cross member 9a nearest the hinged portion 16, leans up. Thus, the hinged portion 16 leans up near the seat 4 and is rotated around the hinge devices 18a, b of the mounting, with the hinged portion 16 and the seat 4 form an angle greater than 0 degrees. This situation is the meet place for example, when the user sits, leaning back 3.

Compared with the known solutions chaise longue or sofa according to the present invention differs in that the seat and the folding portion are connected at pivot points 17A, b and, in addition, have independent articulated suspension on opposite ends. Therefore, if the seat and the folding part of the bend, the entire Assembly must be extensible, to allow such a tilt. This opening is preferably provided in the hinge points 17A, b between the seat and the folding part. In the first embodiment, the hinges can be a conventional two-element joints with tubular ends for installation in the seat frame and the corresponding frame in the folding part. Each hinge can be attached to the first end to the frame and the other end is free to slide inside the tubular frame. Both ends can slide freely. Therefore, when the tilt of the seat frame up in the hinge points slightly move to the side.

However, it is preferable to implement each hinge point 17A, b in the form of an elastic hinge, shown in Fig.8A and 8b. He is a tubular body 19 of elastic material. The hinge has a biconical or tapered toward both ends and contains an annular ledge 20 in the middle. The hinge suppose the equipment fully or partially closed by a wall 21, located in the middle of the inner part of the tube. Such a hinge can just install as it is inserted into the tubular ends of the frames. The hinge consists of only one element and has good durability. In addition, it does not generate noise during operation.

1. Design (1) seat including a support frame (2), seat (4) and the backrest (3), seat (4) includes the seat frame formed by the side walls (9a, b), the front cross member (10A) and the rear cross member (10b), and pivotally connected with the supporting frame (2) via at least one mechanism (8A, b) mounting below the surface of the seat (4), at least one balancing spring (14) is installed between the seat (4) and a supporting frame (2), containing the first and second side elements (2A, b), and front and rear elements (2C, d) frame, characterized in that the mechanisms (8A, b) fastening set asymmetrically relative to the seat (4) in comparison with the Central axis of the seat so that the axis of the hinge is held between the knees and thighs of the user sitting on the seat structure in a normal position, with your feet parallel and leaning back on the backrest, with the specified mechanism (8A, b) attachment is located between the side walls (9a, b) seat (4) and side panels (2A, b) base frame (2).

2. Design by p. 1, trichomania fact, that the specified frame of the seat or the protruding portion is located between the at least one limit stop (12, 13) of the base frame (2) with the specified end stop or stops (12, 13) limit the possible rotation angle of the seat (4).

3. Design under item 1 or 2, characterized in that the clamping mechanism is located approximately 1/3 of the distance from the front element (2C).

4. Design by p. 1, characterized in that the seat (4) is configured to tilt down not more than 10 degrees and preferably at least 5 degrees from the horizontal line.

5. Couch, comprising a frame (1) seat on one of the PP.1-4.

6. Sofa, including design (1) seat on one of the PP.1-4, in which the hinged portion (16) pivotally connected to the first end of the seat (4) as its continuation, with the hinged portion is also pivotally connected to the second end, specified opposite the first end, with a supporting frame.

7. The sofa under item 6, characterized in that the hinged part is connected with the seat by elastic hinges (17A, b).

8. Chair, comprising a frame (1) seat on one of the PP.1-4.



 

Same patents:

Chair // 2189771
The invention relates to furniture, in particular office chairs with frame made of tubular metal elements mounted on a height-adjustable swivel bearing

Seat design // 2537758

FIELD: personal use articles.

SUBSTANCE: invention relates to a sun lounger or a couch with a back and is aimed at ensuring the possibility of easy adjustment of the back position by way of body weight redistribution. The seat couch contains a frame, a seat and a back. The seat comprises back rods, cross rods and seat springs. The back is stationarily fixed while the seat is connected to the frame, so that to enable rotation, with the help of fixture devices under the seat surface; one or more balancing springs is/are installed between the seat and the frame with the wing or flap part connected to the seat so that to enable turning with the help of turning articulated joints. The flap part is connected to the frame so that to enable turning at spots at the end that is opposed to the articulated joints.

EFFECT: design improvement.

5 cl, 4 dwg

FIELD: personal use articles.

SUBSTANCE: invention relates to furniture industry, in particular, to transformable upholstered furniture, such as a convertible armchair or convertible couch. Convertible upholstered furniture comprises a collapsible lever frame joined with the base, and on this base armours are fixed in a transverse direction, which are arranged as capable of connection with a mattress. The frame comprises hingedly joined head, intermediate and middle sections and pull-out leg section, kinematically connected with appropriate electric drives, one of which provides for the possibility of lifting and lowering of the head and intermediate sections, and the other one - reciprocal displacement of the leg section. The leg section has edges bent inside to provide for the possibility of their rounding with the mattress edge bent inside in the folded position of the frame, and is arranged with guides for interaction with rolls connected with ends of armours in the leg section.

EFFECT: increased comfort of convertible furniture use.

3 cl, 3 dwg

FIELD: personal use articles.

SUBSTANCE: invention relates to production of furniture, in particular to upholstered furniture. Convertible furniture for sitting and lying contains a frame with a back-rest and a seat fixed movably or rigidly. The seat is equipped with a device of changing rigidity of the flooring during transformation the furniture from seating position to the position for lying.

EFFECT: it provides the ability to change rigidity of the elastic foundation in positions of upholstered furniture for sitting and lying.

7 cl, 4 dwg

Sofa-bed // 2332147

FIELD: items of personal use and for household.

SUBSTANCE: sofa-bed is made with the possibility of transformation from the position "sofa" to the position "double-deck bed". The sofa-bed contains a base, a back, vertical side walls and holders. The vertical side walls from the backside have a projecting part that is pivotally connected with the ends of the holders. The opposite ends of the holders are situated in the directive parts made on the back.

EFFECT: simplified design and increase of operating convenience.

3 dwg

Bed // 2311104

FIELD: furniture industry, in particular, manufacture of transformable furniture.

SUBSTANCE: bed has back, cradle pivotally fixed in upper part of back by means of holders connected with their one ends to cradle and located with their other ends in guiding slots of bed back so as to be moved and fixed in operating position. Holders are made in the form of members to be inserted into one another. Member to be inserted is formed rod-like. Lower weight member is pivotally connected to cradle.

EFFECT: convenient usage of bed owing to reduced consumption of energy for transformation thereof.

2 dwg

FIELD: light industry, in particular, production of furniture used in rooms with restricted areas.

SUBSTANCE: sofa-bed has base, vertical sides, back connected to sides and positioned for displacement along height and depth of seat and rotation for forming of second-tier bed. Adjustable height legs and holders are movable according to displacement of back. Holders are located with their one ends in slots provided through rear wall and connected with their other ends to back.

EFFECT: provision for adjustment of sofa sizes depending upon user's constitution.

4 cl, 2 dwg

Sofa-bed // 2275161

FIELD: light industry, in particular, production of transformable furniture.

SUBSTANCE: sofa-bed has base, upright sides and back comprising back members, with one back members being pivotally connected to sides and other back members being pivotally connected with one another and being positioned for rotation to create "bed" position above back, at least one bed forming portion, holders and guards. Upright sides have projections for retaining of back and additional bed forming part in horizontal position, and receptacles for retaining of holders in operating position. Sofas-beds of such construction may be used for creating of additional bed-forming portions of second, third and further tiers to provide additional bed forming places in rooms with restricted area.

EFFECT: wider operational and functional capabilities and convenient and simplified transformation of sofa into bed and vice versa.

4 cl, 2 dwg

Sofa-bed // 2264775

FIELD: furniture industry, in particular, transformable furniture, wherein sofa-bed may be transformed into two-tier bed.

SUBSTANCE: sofa-bed has base, back, rear wall and vertical sides. Back is pivotally connected with vertical sides. Rear wall is equipped with guiding slots having receptacles. In order to convert sofa-bed into two-tier bed, sofa-bed is furnished with holders pivotally connected with their one end to back, with other ends of holders being inserted into guiding slots for moving and retaining back in receptacles, when back is in horizontal position. Back has increased thickness along perimeter at outer side. Vertical sides are furnished with leg recesses.

EFFECT: enhanced reliability in operation, wider operational capabilities and convenient employment of sofa-bed.

4 cl, 4 dwg

FIELD: light industry, in particular, manufacture of transformable furniture.

SUBSTANCE: adjustment mechanism has pole, cantilever, bracket and at least one spring. Pole is attached directly to seat or furniture case. Pole upper part is connected through pivots to lower part of cantilever, and upper part of cantilever is connected through pin to bracket positioned rearward of back. In vertical position of cantilever relative to seat, its edge abuts against pole to thereby provide for vertical position of back relative to seat. First spring is positioned between pivots and second spring is put onto pin. Rotation in single plane of cantilever relative to pole and of bracket relative to cantilever ensures adjustment of position of back or arm rest and retaining in said position in vertical plane with predetermined inclination angle relative to furniture seat.

EFFECT: simplified construction, convenient operation, wider operational capabilities, improved stability and ergonomics of lying and seating furniture.

15 cl, 5 dwg

The invention relates to furniture and ensures the fulfilment of furniture for sitting and lying a simple, convenient and reliable in operation, simple transformation mechanism, which occupies little space and allows you to use the cavity of the box-shaped base as a drawer for bedding

FIELD: sports.

SUBSTANCE: invention relates to the field of light industry, physical culture and medicine, and can be used in the manufacture of various devices for sitting, used both at home and in offices, and also in specialised prevention and health institutions, and is aimed at the ability of adapting the device to the individual characteristics of the person. The device for health-improving effect on the human body comprises at least one support, a seat mounted on the support, and at least one means providing vibrational motion of the seat. The device comprises at least one barrel-shaped or conical helical spring providing vibrational motion of the seat along the vertical and horizontal axes, and the rotation about the vertical and horizontal axes with a frequency of 1 to 5 Hz, one end of which is connected to the support, and the second end is connected to the lower surface of the seat.

EFFECT: improvement of the design.

10 cl, 3 dwg

FIELD: transport.

SUBSTANCE: vehicle seat has fastener assembly, seat bottom (3) connected with one of two elements of fastener assembly (11, 12) and backrest (4) connected with the other of two fastener elements (11, 12). The fastener assembly has the first fastener assembly element (11) on which ring gear (17) is placed, the second fastener assembly element (12) on which gear wheel (16) is placed and which engages with ring gear (17), as well as cam (27, 27) installed in rests with possibility of rotation and actuated by collar (21) and revolving in circumferential direction. Between the first fastener assembly element (11) and the second fastener assembly element (12) mounting space (B) is provided which is sealed in some places in outward direction. In the mounting space (B), dividing ring (61; 61') is placed which divides mounting space (B) into outer mounting space (Ba) intended for gear mechanism determined by gear wheel (16) and ring gear (17), and inner mounting space (Bi) intended for cam (27, 27) and contains lubricant for cam (27, 27).

EFFECT: creation of fastener assembly for vehicle seat.

10 cl, 9 dwg

FIELD: personal use articles.

SUBSTANCE: invention relates to an armchair. The armchair has a seat support structure, a seat, and a support frame. The support frame is formed by a base on castors, the height regulation mechanism and the main transverse bar. The seat is designed so that to enable its selective movement relative to the support frame and has a fixed position and a free position. The back has a back frame and a deformable cover. The back is designed so that to enable its divergence between the vertical position and the maximum divergence position. The divergence mechanism contains deformable elements linking the seat to the support frame and ensuring their interaction. The divergence resistance mechanism is designed so that to enable its selective actuation; in the actuated state the mechanism resists the back movement towards the maximum divergence position.

EFFECT: comfort of the user position in the armchair.

27 cl, 2 tbl, 50 dwg

Armchair // 2518216

FIELD: personal use articles.

SUBSTANCE: this invention object is a chair used in transportation vehicles, in offices and other places where frequent change of the seat position to meet the user's demands is required. The chair contains the chair bearing structure mounted on the support mechanism by means of the bolts of the support mechanism side connectors the rotation axis whereof represents the seat structure turning axis and is located approximately on the vertical axis passing through the user's centre of gravity and is positioned by way of the locking mechanism consisting of support levers mounted on the support mechanism and the seat bearing structure so that the upper lever mounted on the seat bearing structure so that to enable turning round the axis is connected, via the axis, to the lower lever mounted on the support mechanism so that to enable turning; at least one lever on at least one side of the armchair has a fixture used for fixation of the position of the levers and the seat bearing structure.

EFFECT: invention enables changing the seat position as quick as possible and without the user applying considerable force.

6 cl, 3 dwg

Drive // 2517023

FIELD: machine building.

SUBSTANCE: invention relates to linear drive. Linear drive (1) comprises motor engaged via gearing with spindle whereat spindle nut is secured to drive element equipped with the front link (3). Drive (1) comprises also the rear link (4) for free displacement between limiters. Said rear link (4) activates switch (7) at its one position.

EFFECT: higher reliability.

9 cl, 5 dwg

Drop chair // 2506028

FIELD: personal usage articles.

SUBSTANCE: invention relates to a drop chair. The drop chair with a base whereon an upright-standing back is attached and with a seat installed so that to enable turning backward and forward round the tuning axis between the unfolded position of the seat and the rest position, thrown open as a result of gravitation force acting upwards towards the chair back. The seat and the back are respectively represented by a plastic detail produced by way of pneumatic moulding. From the bottom side, the back is formed by two back projections, positioned opposite each other on each side with the back cavity limited on each side with the help of the inner surfaces of the said projections. On the rear the seat has an extension aligned with the back cavity. The base has a pair of vertical console elements that are positioned at a distance relative each other, their end (top-positioned) sections attached to the inner surfaces of the back projections. The turning axis passes through the both back projections and the sea extension.

EFFECT: chair fabrication and mounting cost-efficiency.

9 cl, 5 dwg

Armchair // 2500323

FIELD: personal use articles.

SUBSTANCE: invention relates to devices for sitting, namely to armchairs. The armchair comprises a support, and the seat and the bracket movably connected to it, which is connected by a hinge to the lower part of the backrest. The upper part of the backrest is hingedly connected to the lower part of the backrest. The seat is made of four parts arranged in two rows and connected to the support by springs, at that the bracket is connected to the support by a spring.

EFFECT: providing opportunity of long and comfortable sitting of the user on this device.

14 cl, 7 dwg

FIELD: medicine.

SUBSTANCE: invention refers to medical equipment and aims at examinations, manipulations, minor and major gynaecological and urological surgical procedures. A gynaecological examination chair comprises a frame which bears a seat with kneeboards, a radially carried cup and a back a free end of which is pivotally coupled to the frame through an actuator. The seat and back are pivotally aligned on the frame. The seat comprises a supporting arm suspended as a cantilever from the back; the supporting arm is topped with an adjustable stop bar attached onto the back and positioning the back and seat as a whole in space.

EFFECT: there are provided simplified structure of the gynaecological examination chair and repositioning of the back and seat relatively to each other in space with negligible physical efforts.

1 dwg

FIELD: personal use articles.

SUBSTANCE: invention relates to retractable footstep mechanisms for furniture articles. The ratchet element of the furniture article footstep intended for temporary retention of the footstep unit in slightly protruded positions excludes an integral uniform element with the first part including cavities each of them determining a projected position of the footstep unit. The second part has a male engageable tag. The third part has the opposite spaced first and second engagement elements with a bracket. The third part resiliently declines relative to the first and second parts enabling acceptance of the furniture mechanism bracket between the first and the second engagement element s with a bracket when the male engageable tag of the second part engages with the furniture article bracket, ensuring movement arresting with the help of the ratchet mechanism of the first and second parts relative to the third part.

EFFECT: simplified design without reduction of reliability.

19 cl, 16 dwg

Orthopaedic chair // 2497427

FIELD: personal use articles.

SUBSTANCE: invention relates to furniture and may be used domestically for work, study, rest as well as for health recovery and rectification of posture disorders and is aimed at increasing comfort of the user remaining in a seated position for a long time. The orthopaedic chair contains the base seat, an ankle support positioned under the basic seat and positioned so that to enable adjustment in terms of height, tilt and distance relative to the basic seat. The seat is composite, consisting of two parts: the main stationary part and the auxiliary one. The auxiliary part represents the front part of the ankle support during its fixation in the upper position. The ankle support is "П"-shaped, fixed on movable guides that, on the one hand, are pivotally attached to posts secured to the seat, and on the other hand - move along the adjustment bracket so that to enable fixation.

EFFECT: improvement of design.

2 cl, 5 dwg

Up!