CN107920664A - Dual function chair for sitting and kneeling - Google Patents

Abstract

The subject of the invention is a convertible bi-functional chair for sitting and kneeling, which allows to change the state and relax the spine during long periods of work involving sitting or during long trips on planes, buses or trains. The dual function chair for sitting and kneeling comprises a movable rotary seat (1), a backrest (3) and knee supports (6). The bi-functional chair is equipped with means allowing to vary the distance between the front edge of the seat and the backrest, the inclination angle of the backrest with respect to the seat, and the height of the backrest with respect to the seat, which means allow to convert a seat and a backrest for traditional seating into a seat and a backrest for kneeling, and vice versa.

Description

Dual function chair for sitting and kneeling

The subject of the present invention is a convertible, dual-function chair for sitting and kneeling, which allows a change of state and relaxation of the spine during long periods of work involving sitting or during long journeys in an airplane, bus or train.

A chair for kneeling is known from Polish Utility Model No. 64081. It is a rehabilitation chair mainly used for kneeling, without a backrest, and is constructed in the shape of the letter X.

Another solution for a similar purpose is known from Polish patent application P.390736. It is a convertible piece of furniture for sitting and kneeling in which a two-piece kneeling pad assembly is supported on a rotatable and tiltable arm mounted transversely on a stand.

Other solutions with a similar purpose are known, for example that in European patent EP0570550, in which the seat, knee support and backrest are suspended from support columns based on wheel mounts on suitable mechanisms. According to needs, the mechanism includes rods that allow the usable surface of the chair to move in space. In this way, the chair can be converted to a seated state, a sit-kneeling state, etc. Locking of the state of the seat, kneeling pad and backrest is achieved by a latch and bolt mechanism.

A similar type of furniture piece is also known from Polish patent application P.387898. The chair described therein is equipped with a seat, a two-piece knee support, a backrest and armrests. The kneeling mat assembly consists of two parts. Each of the two parts enables the kneeling chair to be tilted and moved backwards.

A solution is also known from patent application PCT/IB2014/000114, the basic feature of which is that the seat of the chair is detachable. Its front converts into a kneeling pad. The chair has a double arm seat support. Its movable arm supports the front of the chair, which converts into a kneeling pad, and the second arm supports the back and back of the chair.

A solution in the form of a multifunctional chair for yoga practice is known from US patent document US794672B2, in which a kneeling cushion is lowered along the seat post.

In addition to changing the inclination angle of the seat, precise adjustment of a dual-function chair for sitting and kneeling functions requires changing the depth of the seat, the angle of the backrest relative to the seat, and adjusting the height of the backrest relative to the seat.

In the kneeling form, the depth of the seat is lower than during traditional seating. Depending on how the kneeling pad is installed and arranged, the depth of the seat should be reduced or increased in both the detachable and non-detachable seat variants.

Since the inclination angle of the seat is changed during conversion of the chair, it is necessary to change the angle of the backrest relative to the seat.

To properly support the lumbar portion of the spine, the backrest should be contoured and convex at the lumbar portion. In order to ensure a proper arrangement of the backrest in both positions of the chair, the height of the backrest relative to the seat is preferably adjustable.

The dual-function chairs of the prior art do not allow the device to be precisely adjusted to the sitting and kneeling functions while maintaining the aforementioned conditions.

The dual function chair for sitting and kneeling according to the present invention includes a seat with an adjustable inclination angle, a backrest and a movable knee support. It is equipped with one or several devices that allow to vary the distance between the front edge of the seat and the backrest, the angle of inclination of the backrest relative to the seat, and the height of the backrest relative to the seat, which allow to precisely adapt the The seat and back for seating convert to seat and back for kneeling and vice versa.

It is advantageous to ensure seat depth changes by sliding means, wherein the seat, which is manually movable relative to the backrest, is connected to the seat mount by a sliding mechanism and the seat plate is rotatably connected to the chair base assembly. By rotatably connecting the frame of the backrest to the rear of the seat panel, it is ensured that the angle between the backrest and the seat can be changed manually. Manually changing the height of the backrest relative to the seat is ensured by connecting the backrest to a backrest support movable in vertical direction.

It would be advantageous for chairs for sitting and kneeling to be equipped with means for maintaining a user-selected backrest angle without locking the movement of the backrest. Such a device requires no additional locking action and allows the user to quickly and smoothly change the reclining angle of the backrest by pushing with the back.

It would be advantageous for chairs for sitting and kneeling to be equipped with means for maintaining a user-selected back angle without the need to lock the movement of the back, with components for equalizing the resistance of the back with the weight of the user. The device does not require the chair to be adjusted for each user.

It is advantageous to ensure the change of the depth of the seat and the change of the angle between the backrest and the seat by means in which the backrest support is connected by means of a movement and rotation mechanism to the seat plate, which is rotatably connected to the chair base assembly. This ensures manual adjustment of the angle between backrest and seat and the possibility to manually shorten or lengthen the backrest. Manually changing the height of the backrest relative to the seat is achieved by connecting the backrest to a backrest support that can be moved manually in the vertical direction.

The change in the depth of the seat and the change in the height of the backrest relative to the seat are advantageously ensured by means in which the support of the seat is rotatably connected to the mount of the seat, the rear of the seat The extension is at least 35 mm and the shape of the back support is such that the most forward lumbar support point of the back overlaps the seat by at least 35 mm in the seated position. For the above reasons, after the chair is arranged in the kneeling position, the rear portion of the seat is automatically extended. Adequate setting of the backrest height is ensured by arranging the shaft of the backrest support at the end of the seat pan. The height of the backrest changes automatically. Manually changing the angle between the backrest and seat is achieved by rotatably connecting the frame of the backrest to the rear of the seat pan.

Changes in the depth of the seat, the angle and height of the backrest relative to the seat are advantageously effected by means in which the support of the seat is rotatably connected to the mount of the seat, the seat The rear portion of the backrest is extended by at least 35mm and the shape of the backrest support is such that the most forward lumbar support point of the backrest overlaps the seat by at least 35mm in the seated position. The back support is connected to the seat support by means of slides through sliding parts, which ensures automatic correction of the angle between seat and backrest during conversion of the chair. The seat extends automatically. Adequate setting of the backrest height is ensured by arranging the shaft of the backrest support at the end of the seat pan. The height of the backrest changes automatically.

Changes in the depth of the seat, the angle and height of the backrest relative to the seat are advantageously effected by means in which the support of the seat is rotatably connected to the support of the seat, the seat The rear portion of the backrest is extended by at least 35mm and the shape of the backrest support is such that the most forward lumbar support point of the backrest overlaps the seat by at least 35mm in the seated position. The rear of the seat plate is rotatably connected to the chord, and the other end of the chord is rotatably connected to the mounting plate of the back support. The front portion of the mounting plate of the back support is rotatably connected to the chord, and the other end of the chord is rotatably connected to the seat support. The chord is also rotatably connected to another chord, the other end of which is connected to the base of the seat. The device enables automatic extension of the seat, automatic correction of the angle of the backrest, automatic correction of the height and distance of the backrest to the seat after the chair has been arranged in a kneeling position. The mounting plate of the backrest is attached to the seat support by a rotatable connection. This provides an additional functionality - the angle between the backrest and seat can be changed manually, with the aim of reclining the backrest in the two positions of the chair.

Changes in the depth of the seat, the angle and height of the backrest relative to the seat are advantageously accomplished by means in which the support of the seat is rotatably connected to the chair base assembly, the rear of the seat The upper part is extended by at least 35mm and the shape of the backrest support is such that the most forward lumbar support point of the backrest overlaps the seat by at least 35mm in the seated position. The rear portion of the bottom plate of the seat is rotatably connected to the chord, and the other end of the chord is rotatably connected to the slide member. This sliding member is connected to the chair base assembly by any sliding structure that allows vertical up and down movement. The device enables automatic extension of the seat, automatic correction of the angle of the backrest, automatic correction of the height and distance of the backrest to the seat after the chair has been arranged in a kneeling position. The slide member is rotatably attached to the seat support of the chair, which in turn is rotatably attached to the back support. This provides an additional functionality - the angle between the backrest and seat can be changed manually, with the aim of reclining the backrest in the two positions of the chair.

Changes in the depth of the seat, the angle and height of the backrest relative to the seat are advantageously accomplished by means in which the support of the seat is rotatably connected to the chair base assembly, the rear of the seat The upper part is extended by at least 35mm and the shape of the backrest support is such that the most forward lumbar support point of the backrest overlaps the seat by at least 35mm in the seated position. The rear of the bottom plate is rotatably connected to the chord, and the other end of the chord is rotatably connected to the mounting plate of the back support. The plate is rotatably connected to the chord, and the other end of the chord is rotatably connected to the seat support assembly. The axes of rotation of the chords are positioned relative to each other in a rhomboidal pattern. The plate is rotatably connected to the back support, which in turn is attached to the backrest by a rotatable connection. The device enables automatic extension of the seat, automatic correction of the angle of the backrest, automatic correction of the height and distance of the backrest to the seat after the chair has been arranged in a kneeling position. The rotatable connection provides the additional function of manually changing the angle between the backrest and the seat, with the aim of tilting the backrest in the two positions of the chair.

Changes in the depth of the seat, the angle and height of the backrest relative to the seat are advantageously accomplished by means in which the support of the seat is rotatably connected to the chair base assembly, the rear of the seat The upper part is extended by at least 35mm and the shape of the backrest support is such that the most forward lumbar support point of the backrest overlaps the seat by at least 35mm in the seated position. The rear of the seat plate is rotatably connected to the chord (the other end of the chord is rotatably connected to the mounting plate of the back support). The front portion of the mounting plate of the back support is rotatably connected to the chord, and the other end of the chord is rotatably connected to the chair base assembly. The chord is also rotatably connected to another chord, the other end of which is connected to the base of the seat. The device enables automatic extension of the seat, automatic correction of the angle of the backrest, automatic correction of the height and distance of the backrest to the seat after the chair has been arranged in a kneeling position. The mounting plate of the backrest is rotatably connected to the backrest support. The mounting plate of the backrest is rotatably connected to the backrest support. This provides additional functionality - the angle between the backrest and seat can be changed manually. This tilt mechanism also provides another additional function. In the seated position, the mechanism achieves seat tilt by moving the backrest backwards, which increases the angle between the seat and backrest by affecting the seat mount/chair base element, which is good for the spine.

An advantageous result of the invention is better support of the user's back, possibly due to the part of the backrest supporting the lumbar part of the spine being set at a suitable height. In addition, when the chair is arranged in the kneeling state, the depth of the seat is reduced, and the angle of the backrest is adjusted in both states of the chair. It is also advantageous to introduce the possibility of reclining the backrest in both positions of the chair in order to set the backrest more or less vertical. Another advantage is the introduction of a mechanism that in the seated state, when the backrest moves backwards, also causes the seat to incline by about 50% of the inclination angle of the backrest, which increases the seat and backrest. angle between.

An advantageous consequence of the invention is that new dual-function chairs with better functionality can be sold and this form of seating can be introduced in buses, trains and airplanes, which will facilitate travel for people suffering from back pain .

Embodiments of the subject matter of the invention are presented in the following drawings, in which:

Figure 1 shows a dual-function chair in which a person is seated in a conventional position, with features that allow changing the distance between the front edge of the seat and the backrest, the angle of inclination of the backrest relative to the seat, and the height of the backrest relative to the seat device.

Figure 2 shows a dual-function chair in which a person is seated in a conventional position, with features that allow changing the distance between the front edge of the seat and the backrest, the angle of inclination of the backrest relative to the seat, and the height of the backrest relative to the seat device.

Figure 3 shows a dual-function chair arranged in a conventional state with features that allow manual changes in the distance between the front edge of the seat and the backrest, manual changes in the angle of inclination of the backrest relative to the seat, and manual changes in the angle of the backrest relative to the seat High sliding seat.

Figure 4 shows a dual-function chair arranged in a kneeling position with features that allow manual changes in the distance between the front edge of the seat and the backrest, manual changes in the angle of inclination of the backrest relative to the seat, and manual changes in the angle of inclination of the backrest relative to the seat The height of the sliding seat.

Figure 5 shows a dual-function chair arranged in a conventional state with features that allow manual variation of the distance between the front edge of the seat and the backrest, manual variation of the angle of inclination of the backrest relative to the seat, and manual variation of the angle of the backrest relative to the seat. High sliding backrest.

Figure 6 shows a dual-function chair arranged in a kneeling state, which has features that allow manual changes in the distance between the front edge of the seat and the backrest, manual changes in the inclination angle of the backrest relative to the seat, and manual changes in the angle of inclination of the backrest relative to the seat. height of the sliding backrest.

Figure 7 shows a dual function chair arranged in a conventional position, wherein the rear of the seat is extended by at least 35 mm and the back support is shaped such that the most forward lumbar support point of the back overlaps the seat in the seated position At least 35mm. The chair is equipped with a manual mechanism for setting the angle of the back support and a support shaft at one end of the seat pan.

Figure 8 shows a dual function chair arranged in a kneeling position where the rear of the seat is extended by at least 35 mm and the back support is shaped such that the most forward lumbar support point of the back is on the seat in the seated position Overlap at least 35mm. The chair is equipped with a manual mechanism for setting the angle of the back support and a support shaft at one end of the seat pan.

Figure 9 shows a dual function chair arranged in a conventional position with a mechanism for automatically adjusting the angle between the backrest and seat during transition of the chair from a seated position to a kneeling position. The chair is equipped with a support shaft at one end of the seat plate.

Figure 10 shows a dual function chair arranged in a kneeling position with a mechanism for automatically adjusting the angle between the backrest and seat during transition of the chair from the seated position to the kneeling position. The chair is equipped with a support shaft at one end of the seat plate.

Fig. 11 shows a dual-function chair arranged in a conventional state with a backrest setting device, wherein the backrest mounting plate can be moved by slides. This chair has the added feature of reclining the backrest.

Figure 12 shows a dual-function chair arranged in a kneeling position with a backrest arrangement, wherein the backrest mounting plate can be moved by means of slides. This chair has the added feature of reclining the backrest.

Figure 13 shows a dual-function chair arranged in a conventional state with a backrest setting device, wherein the backrest mounting plate can be moved by a sliding mechanism. This chair has the added feature of reclining the backrest.

Figure 14 shows a dual-function chair arranged in a kneeling position with a backrest setting device, wherein the backrest mounting plate can be moved by a sliding mechanism. This chair has the added feature of reclining the backrest.

Figure 15 shows a dual-function chair arranged in a conventional position with a backrest arrangement, wherein the backrest mounting plate can be moved by means of chords arranged in a diagonal pattern relative to each other. This chair has the added feature of reclining the backrest.

Figure 16 shows a dual-function chair arranged in a conventional position with a backrest arrangement, wherein the backrest mounting plate can be moved by means of chords arranged in a diagonal pattern relative to each other. This chair has the added feature of reclining the backrest.

Fig. 17 shows a dual-function chair arranged in a conventional state with a backrest setting device, wherein the backrest mounting plate can be moved by slides. The chair has the additional function of reclining the backrest as well as the function of reclining the seat. The backrest of the chair in this image is set to be vertical.

Fig. 18 shows a dual-function chair arranged in a conventional state with a backrest setting device, wherein the backrest mounting plate can be moved by slides. The chair has the additional function of reclining the backrest as well as the function of reclining the seat. The chair in this figure has its backrest set to its maximum reclined state.

Figures 19-20 show an embodiment of a dual function chair mounted on a stationary base in a vehicle with means for moving the seat and setting the backrest into a traditional seated position and a kneeling position.

Figure 21 shows a dual function chair with means to maintain a user selected backrest angle without requiring manual locking of the movement of the backrest.

Figure 22 shows a means for maintaining a user selected backrest angle without requiring manual locking of the movement of the backrest.

Figure 23 shows a means for maintaining a user selected back angle without requiring manual locking of the backrest movement, including components for balancing the resistance of the backrest with the weight of the user.

The embodiments presented in Figures 1 and 2 show a person seated in a dual-function chair for sitting and kneeling, equipped with a front edge that automatically changes the seat, in a conventional position and a kneeling position, respectively The distance between the backrest, the inclination angle of the backrest relative to the seat, and the height of the backrest relative to the seat. The device converts a seat and back for traditional seating into a seat and back for kneeling and vice versa.

The embodiment presented in Figures 3 and 4 shows a dual function chair for sitting and kneeling, equipped with a seat with a variable inclination angle, a backrest and a knee support that can move in two positions. All adjustments are manual. The seat of the chair 1 is connected to the seat mount 2 by any type of sliding mechanism 7 . The movement of the mechanism 7 can be locked or unlocked by any unit (eg slide lock 11). The seat mount 2 is rotatably connected (rotation shaft 8 ) to the seat support 4 . The rotation can be locked or unlocked by any unit (eg rotation lock 9). The seat mount 2 is rotatably connected (rotation shaft 10 ) to the back support 5 . Turn can be locked or unlocked by any unit. The back support 5 is attached to the backrest 3 using any type of vertical sliding mechanism 14 . The movement of the backrest can be locked or unlocked by any unit (eg slide lock 13). If the seat is detachable, the knee support 6 constitutes an extension of the seat when the chair is arranged in a seated state; The transition period is set under the seat and moves to the kneeling position.

The embodiment presented in Figures 5 and 6 shows a dual function chair for sitting and kneeling, equipped with a seat with a variable inclination angle, a backrest and a knee support that can move in two positions. All adjustments are manual. The seat mount 2 is rotatably connected (rotation shaft 8 ) to the seat support 4 . The rotation can be locked or unlocked by any unit (eg rotation lock 9). The seat mount 2 is connected to the back support 5 by a turn-slide mechanism or a turn (rotation axis 16 ) and slide mechanism 15 . Movement can be locked by any unit (eg slide and turn lock 17). The back support 5 is connected to the backrest 3 by means of a vertical sliding mechanism 14 . Movement can be locked by any unit (eg slide lock 13). If the seat is detachable, the knee support 6 constitutes an extension of the seat when the chair is arranged in a seated state; The transition period is set under the seat and moves to the kneeling position.

The embodiment presented in Figures 7 and 8 shows a dual function chair for sitting and kneeling, equipped with a seat with a variable inclination angle, a backrest and a knee support that can move in two positions. Adjustment of the backrest angle is manual, setting the seat depth and the height of the backrest above the seat is an automatic process achieved during the transition of the chair from the traditional sitting position to the kneeling position. The seat mount 2 is rotatably connected (rotation shaft 8 ) to the seat support 4 . The movement of this connection can be locked by any unit (for example, a turn lock 9). The back support 5 is rotatably connected (rotation shaft 18 ) to one end of the seat mount 2 . The movement of the connection can be locked by any unit (for example, a turn lock 19). The back support 5 is shaped such that the most forward lumbar support point of the back overlaps the seat by at least 35 mm in the seated position. A back support 5 is attached to the backrest 3 . If the seat is detachable, the knee support 6 constitutes an extension of the seat when the chair is arranged in a seated state; The transition period is set under the seat and moves to the kneeling position.

The embodiment presented in Figures 9 and 10 shows a dual function chair for sitting and kneeling, equipped with a seat with a variable inclination angle, a backrest and a knee support that can move in two positions. Setting the backrest angle, seat depth, and height of the backrest above the seat is an automatic process that occurs during the transition of the chair from a traditional sitting position to a kneeling position (and vice versa). The seat mount 2 is rotatably connected (rotation shaft 8 ) to the seat support 4 . The rotation of this connection can be locked by any unit (eg rotation lock 9). The back support 5 is rotatably connected (rotation shaft 18 ) to one end of the seat mount 2 . The back support 5 is shaped such that the most forward lumbar support point of the back overlaps the seat by at least 35 mm in the seated position. A back support 5 is attached to the backrest 3 . The dual-function chair is equipped with a mechanism for automatically adjusting the angle between the backrest and the seat during the transition of the chair from the seated state to the kneeling state, and the mechanism is configured so that the seat support 4 is rotatably connected (connected to the rotating shaft 22 ) to the chord 21, and the other end of the chord 21 is rotatably connected (connected to the rotating shaft 23) to the slide member 24. Part 24 is connected to seat mount 2 by a horizontal sliding mechanism that allows movement from the rear end of the seat to the front end (and vice versa). Slide member 24 is rotatably connected (connected to rotation axis 23 ) to a chord 25 , the other end of which is rotatably connected (to rotation axis 26 ) to a short arm 27 of the back support (connected to rotation axis 18 ). If the seat is detachable, the knee support 6 constitutes an extension of the seat when the chair is arranged in a seated state; The transition period is set under the seat and moves to the kneeling position.

The embodiment presented in Figures 11 and 12 shows a dual function chair for sitting and kneeling, equipped with a seat with a variable inclination angle, a backrest and a knee support that can move in two positions. Setting the backrest angle, seat depth, and height of the backrest above the seat is an automatic process that occurs during the transition of the chair from a traditional sitting position to a kneeling position (and vice versa). The seat mount 2 is rotatably connected (rotation shaft 8 ) to the seat support 4 . The rotation of this connection can be locked by any unit (eg rotation lock 9). The chord 29 is rotatably connected (connected to the rotation shaft 28 ) to the rear of the seat mount 2 . The other side of the chord is rotatably connected (connected to the rotation axis 30 ) to the back support mounting plate 31 . The front portion of the back support mounting plate 31 is rotatably connected (connected to the rotating shaft 32 ) to the chord ( 33 ), and the other end of the chord 33 is rotatably connected (connected to the rotating shaft 34 ) to the chair base assembly 4 . Furthermore, the chord 33 is rotatably connected (rotation shaft 35 ) to the chord 36 , and the other end of the chord 36 is rotatably connected (rotation shaft 37 ) to the seat mount 2 . The back support 20 is rotatably connected (rotation shaft 38 ) to the back support mounting plate 31 . The rotation of this connection can be locked by any unit (eg rotation lock 39). The backrest 3 is attached to a backrest support 31 . If the seat is detachable, the knee support 6 constitutes an extension of the seat when the chair is arranged in a seated state; The transition period is set under the seat and moves to the kneeling position.

The embodiment presented in Figures 13 and 14 shows a dual function chair for sitting and kneeling, equipped with a seat with a variable angle of inclination, a backrest and a knee support that can move in two positions. Setting the backrest angle, seat depth, and height of the backrest above the seat is an automatic process that occurs during the transition of the chair from a traditional sitting position to a kneeling position (and vice versa). The seat mount 2 is rotatably connected (rotation shaft 8 ) to the seat support 4 . The rotation of this connection can be locked by any unit (eg rotation lock 9). The rear portion of the seat mount 2 is rotatably connected (rotation shaft 40 ) to a chord 41 , and the other end of the chord 41 is rotatably connected (rotation shaft 42 ) to a slide member 43 . The sliding part 43 is connected to the seat support 4 by any sliding mechanism 44 . The slide member 43 is rotatably connected (rotation shaft 45 ) to the back support 5 of the chair. The rotational movement of the connection can be locked by any unit (for example the rotational lock 46). A back support 20 is attached to the backrest 3 . If the seat is detachable, the knee support 6 constitutes an extension of the seat when the chair is arranged in a seated state; The transition period is set under the seat and moves to the kneeling position.

The embodiment presented in Figures 15 and 16 shows a dual function chair for sitting and kneeling, equipped with a seat with a variable angle of inclination, a backrest and a knee support that can move in two positions. Setting the backrest angle, seat depth, and height of the backrest above the seat is an automatic process that occurs during the transition of the chair from a traditional sitting position to a kneeling position (and vice versa). The seat mount 2 is rotatably connected (rotation shaft 8 ) to the seat support 4 . The rotation of this connection can be locked by any unit (eg rotation lock 9). The rear of the seat mount 2 is rotatably connected (rotation axis 46 ) to a chord 47 , the other end of which is rotatably connected (rotation axis 48 ) to a back support mounting plate 49 . Back support mounting plate 49 is rotatably connected (shafts 50 and 53 ) to chords 51 and 52 , the other ends of which are rotatably connected (shafts 54 and 55 ) to seat support 4 . The rotation shafts 50, 53, 54 and 55 are arranged relative to each other in the form of a rhomboid. The back support 5 attached to the back 3 is rotatably connected (rotation shaft 56 ) to the back support mounting plate 49 . The rotation can be locked by any unit (for example, rotation lock 57). If the seat is detachable, the knee support 6 constitutes an extension of the seat when the chair is arranged in a seated state; The transition period is set under the seat and moves to the kneeling position.

The embodiment presented in Figures 17 and 18 shows a dual function chair for sitting and kneeling, equipped with a seat with a variable angle of inclination, a backrest and a knee support that can move in two positions. Setting the backrest angle, seat depth, and height of the backrest above the seat is an automatic process that occurs during the transition of the chair from a traditional sitting position to a kneeling position (and vice versa). The seat mount 2 is rotatably connected (connected with a rotation shaft 8 ) to the seat support 4 . This rotation can be locked by any unit. The chord 29 is rotatably connected (connected to the rotation axis 28 ) to the seat mount 2 . The other end of the chord 29 is rotatably connected (connected to the rotation shaft 30 ) to the back support mounting plate 31 . The chord 33 is rotatably connected (connected to the rotation shaft 32 ) to the front of the back support mounting plate 31 . The other end of the chord 33 is rotatably connected (connected to the rotation shaft 34 ) to the seat support 4 . Furthermore, the chord 33 is rotatably connected (rotation shaft 35 ) to the chord 36 . The other end of the chord 36 is rotatably connected (connected to the rotating shaft 37 ) to the seat mount 2 . The chair is equipped with a mechanism which automatically tilts the seat 1 together with the mechanism and the kneeling pad about the axis 8 during the reclining of the back support 5 in the conventional sitting position. The mechanism is configured such that the back support mounting plate 31 is rotatably connected (connected with the rotation shaft 32 ) to the tilt rod 58 . One end of the tilting rod 58 is supported on a spring 61 a and the other end, which may be equipped with a wheel 59 , is supported on a push rod 60 . A tilt rod 58 is attached to the back support 5 . The backrest 3 is attached to a backrest support 5 . If the seat is detachable, the knee support 6 constitutes an extension of the seat when the chair is arranged in a seated state; The transition period is set under the seat and moves to the kneeling position.

The embodiment presented in Figures 19 and 20 shows an exemplary use of a dual-function chair for sitting and kneeling on a fixed base according to a configuration that can Or used in transportation such as airplanes.

The embodiment presented in Figures 21 and 22 shows a means of maintaining a user-selected backrest angle without the need to lock the movement of the backrest. The arrangement is constructed such that the chair base 62 is connected by a conical joint to the chair post 63 on which the seat support 4 is arranged. The seat support 4 is rotatably connected (rotation axis 64 ) to the seat mount 2 which in turn is connected to the seat 1 . The arm 67 is rotatably connected (rotation shaft 66 ) to the seat support 4 . Arm 67 is also connected to back reclining mechanism mount 69 by back frame pivot shaft 68 . Back reclining mechanism mount 69 is rotatably connected (rotation axis 70 ) to chord 71 , which is rotatably connected (rotation axis 72 ) to the seat mount. The stop walls 73 and 74 of a spring 75 tensioned by a washer 77 by means of screws 76 are attached to the reclining mechanism mount 69 . The back frame pivot shaft 68 engages a spring pusher 78 which pushes a bolt 79 connected to the washer 80 and through the wall 73 . The seat mount 4 is attached to a seat support bracket 81 having a hole through which a bolt 82 slides when moved by a rod 83 . The bolts enter holes in the seat support 84 attached to the seat mount 2 and prevent movement of the seat in the conventional or kneeling position.

The embodiment presented in FIG. 23 shows a means for maintaining a user selected backrest angle without locking the movement of the backrest, including components for balancing the resistance of the backrest with the weight of the user. The assembly is configured such that the chair base 62 is connected by a tapered joint to the chair post 63 on which the seat support 4 is disposed. The seat support 4 is rotatably connected (rotation axis 64 ) to the seat mount 2 , which in turn is rotatably connected (rotation axis 65 ) to the seat 1 . The arm 67 is rotatably connected (rotation shaft 66 ) to the seat support 4 . Arm 67 is also connected to back reclining mechanism mount 69 by back frame pivot shaft 68 . Back reclining mechanism mount 69 is rotatably connected (rotation axis 70 ) to chord 71 , which is rotatably connected (rotation axis 72 ) to the seat mount. The stop walls 73 and 74 of a spring 75 tensioned by a washer 77 by means of screws 76 are attached to the reclining mechanism mount 69 . The back frame pivot shaft 68 engages a spring pusher 78 which pushes a bolt 79 connected to the washer 80 and through the wall 73 . The seat mount 4 is attached to a seat support bracket 81 having a hole through which a bolt 82 slides when moved by a rod 83 . The bolts enter holes in the seat support 84 attached to the seat mount 2 and prevent movement of the seat in the conventional or kneeling position. The assembly for balancing the resistance of the backrest with the weight of the user is configured such that the backrest frame pivot shaft 68 engages a rod 86 which is rotatably connected to a slider 87 which in turn is rotatably connected to a Rod 88 is provided on shaft 89 . This shaft is provided in the reclining mechanism mount 69 . Rod 88 is rotatably connected to chord 90 which is also rotatably connected to rod 91 . The rod 91 is rotatably connected to the seat mount 2 by a shaft 92 . The lever 91 is rotatably connected to an arm 93 which is in turn rotatably connected to the seat 1 .

List of reference signs:

1-seat

2-seat mount

3-backrest

4-seat support

5- Back support

6- Knee Support

7-Sliding mechanism

8-rotation axis

9-Turn lock

10-rotation axis

11- Example slide lock

12-Example turn lock

13- Example slide lock

14-Sliding mechanism

15-Slide-Turn Mechanism

16-rotation shaft

17- Example slide and turn lock

18-rotation shaft

19-Example turn lock

20-handrail

21-chord

22-rotation shaft

23-rotation shaft

24-Sliding parts

25-chord

26-rotation shaft

27 - Short arm of backrest support

28-rotation shaft

29-chord

30-rotation shaft

31-Back support mounting plate

32-rotation shaft

33-chord

34-rotation shaft

35-rotation shaft

36-chord

37-rotation shaft

38-rotation shaft

39 - Example turn lock

40-rotation shaft

41-chord

42-rotation shaft

43 - sliding parts

44-Sliding Mechanism

45-rotation shaft

46-rotation shaft

47-chord

48-rotation shaft

49-Back support mounting plate

50-rotation shaft

51-chord

52-chord

53-rotation shaft

54-rotation shaft

55-rotation shaft

56-rotation shaft

57 - Example turn lock

58 - Tilt Rod

59-runner

60-putter

61-spring

62-chair base

63-chair post

64-rotation shaft

65-rotation shaft

66-rotation shaft

67-arm

68-Backrest frame rotation axis

69-Backrest reclining mechanism mount

70-rotation shaft

71-chord

72-rotation shaft

73 - retaining wall

74 - retaining wall

75-spring

76-screw

77-washer

78-spring push rod

79-bolt

80-washer

81-seat support bracket

82-bolt

83-bar

84-seat support

85 - Knee Support Arm

86-bar

87-Slide

88-bar

89-axis

90-chord

91-par

92-axis

93-chord

Claims (13)

1. A dual-function chair for sitting and kneeling comprising a seat with an adjustable inclination angle, a backrest, and a movable knee support, characterized in that said dual-function chair is equipped with a The distance between the front edge of the seat and the backrest, the inclination angle of the backrest relative to the seat seat, and the height of the backrest relative to the seat seat can be used in traditional Seat and back conversion for sitting to seat and back for kneeling, and seat and back for kneeling to seat and back for traditional seating. 2. A dual-function chair for sitting and kneeling comprising a seat with an adjustable inclination angle, a backrest, and a movable knee support, characterized in that the dual-function chair is equipped with a device that allows changing the The distance between the front edge of the seat and the backrest, the angle of inclination of the backrest relative to the seat, means for converting a seat and backrest for traditional seating into one for kneeling Seat and back, as well as converting a seat and back for kneeling to a seat and back for traditional seating. 3. The dual-function chair for sitting and kneeling equipped with a seat having an adjustable inclination angle, a backrest, and a movable knee support according to claim 1, wherein said dual-function chair Equipped with means to maintain the user selected backrest angle without the need to manually lock the movement of the backrest. 4. The dual-function chair of claim 3, wherein the means for maintaining a user-selected backrest angle without locking the movement of the backrest is configured such that the chair base (62) is aligned with the chair post ( 63) connection, the chair post (63) is attached to the seat support (4); the seat support (4) is rotatably connected to the seat mounting seat (2) through the rotation shaft (64), The seat mount (2) is connected to the seat (1); the seat support (4) is rotatably connected to an arm (67) via a rotating shaft (66), which in turn is connected via The backrest frame rotating shaft (68) is connected to the backrest tilting mechanism mount (69); 71) is rotatably connected to said seat mount by a rotating shaft (72); said backrest reclining mechanism mount (69) is attached to the retaining walls (73) and (74) of spring (75), said The spring (75) is tensioned by means of a screw (76) through a washer (77); said back frame pivot shaft (68) engages with a spring pusher (78) which pushes to move through the wall (73 ) and is connected to the bolt (79) of the washer (80); the seat support (4) is attached to the seat support bracket (81) with the hole, the bolt ( 82) Slide through the hole; the bolt goes into the hole of the seat support (84) attached to said seat mount (2). 5. The dual-function chair of claim 3, wherein the means for maintaining a user-selected backrest angle without locking movement of the backrest includes means for aligning the resistance of the backrest with the weight of the user a balanced assembly configured such that the chair base (62) is connected to a chair post (63) attached to a seat support (4); the seat support (4) is rotatably connected to the seat mounting base (2) through a rotating shaft (64), and the seat mounting base (2) is connected to the seat base (1) through a rotating shaft (65); The member (4) is rotatably connected to the arm (67) through the rotation shaft (66), and the arm (67) is connected to the backrest reclining mechanism mount (69) through the backrest frame rotation shaft (68); The mechanism mount (69) is rotatably connected to the chord (71) by the rotation axis (70), and the chord (71) is rotatably connected to the seat mount by the rotation axis (72); The backrest reclining mechanism mount (69) is attached to the walls (73) and (74) of a spring (75) which is tensioned by means of a screw (76) through a washer (77); the backrest frame rotates The shaft (68) engages a spring pusher (78) that pushes a bolt (79) that moves through a hole in the wall (73) and connects to a washer (80); the seat supports The member (4) is attached to a seat support bracket (81) having a hole through which a bolt (82) moved by a rod (83) slides; The hole of the seat support (84); the backrest rotation shaft (68) is engaged with the rod (86), which is rotatably connected to the slider (87), which in turn is rotatably connected to the rod ( 88), the rod (88) is rotatably arranged on the shaft (89), and the shaft is mounted on the backrest reclining mechanism mount (69); the rod (88) is rotatably connected to the chord (90), Chord (90) is rotatably connected to rod (91), which in turn is rotatably connected to said seat mount (2) via shaft (92); rod (91) and arm (93) can Rotatably connected, said arm (93) is rotatably connected to the seat (1). 6. The dual-function chair for sitting and kneeling comprising a seat with a variable inclination angle, a backrest, and a movable knee support according to claim 1, characterized in that the seat (1) Slidably connected to the seat mount (2) by any type of sliding mechanism (7) equipped with a slide lock; said seat mount (2) is rotatably connected to the chair base assembly (4) using any type of rotary lock ) - connected to the rotating shaft (8); said seat mount (2) is rotatably connected to the backrest support (5) using any type of rotating lock - connected to the rotating shaft (10); the backrest support (5) through Any type of sliding mechanism (14) locked in any way that allows vertical sliding is attached to the backrest (3); if the seat is detachable, when the chair is arranged in a seated position, The knee support (6) constitutes an extension of the seat; if the seat is not detachable, the knee support (6) during the transformation of the chair by any type of mechanism is placed under the seat and moved to a kneeling position. 7. The dual-function chair for sitting and kneeling comprising a seat with a variable inclination angle, a backrest, and a movable knee support according to claim 1, characterized in that the seat mount (2) Rotatably connected to the chair base assembly (4) by any type of swivel lock - connecting the swivel shaft (8); said seat mount (2) by any type of swivel and slide mechanism with any type of travel lock ( 15) Attached to the back support (5) - to the pivot shaft (16); the back support (5) is attached to said back by any type of sliding mechanism (14) allowing vertical movement with any type of sliding lock ( 3); if the seat is detachable, the knee support (6) constitutes an extension of the seat when the chair is arranged in a seated state; if the seat is inseparable, the knee support (6) is placed under the seat and moved to the kneeling position during the transition of the chair by any type of mechanism. 8. A dual-function chair for sitting and kneeling comprising a seat with a variable inclination angle, a backrest, and a movable knee support according to claim 1, characterized in that the seat mount (2) Rotatably connected to the chair base assembly (4) by any type of swivel lock - connected to the swivel shaft (8); one end of said seat mount (2) is rotatably connected to the back support (5) - connected to the swivel shaft (18); said back support (5) is shaped such that the most forward lumbar support point of said back in the seated state overlaps the seat by at least 35mm; said back support (5) is connected to said backrest (3); if said seat is detachable, said knee support (6) constitutes an extension of said seat when said chair is arranged in a seated position; if The seat is inseparable, then the knee support (6) is placed under the seat and moved to a kneeling position during transition of the chair by any type of mechanism. 9. The dual-function chair for sitting and kneeling comprising a seat with a variable inclination angle, a backrest, and a movable knee support according to claim 1, characterized in that the seat mount (2) Rotatably connected to the chair base assembly (4) by any type of swivel lock - connected to the swivel shaft (8); one end of said seat mount (2) is rotatably connected to the back support (5) - connected to the swivel shaft (18); the shape of the back support (5) is such that in the seated position the most forward lumbar support point of the back overlaps the seat by at least 35mm; the back support (5) is connected to the back (3); the The chair includes a mechanism for automatically adjusting the angle between the backrest and the seat during transition of the chair from a conventional sitting position to a kneeling position, the mechanism being configured such that the chair base assembly (4) is rotatable ground is connected to the chord (21)-connects the rotating shaft (22); the other end of the chord (21) is rotatably connected to the sliding part (24)-connecting the rotating shaft (23); the sliding part (24 ) is slidably connected to said seat mount (2) in a manner that allows horizontal movement from the front to the rear of the chair and from the rear to the front; said sliding member (24) is rotatably connected to the chord (25 )-connected to the rotating shaft (23); the other end of the chord (25) is rotatably connected to the short arm (27) of the backrest support-connected to the rotating shaft (26); if the seat is detachable, Then, when the chair is arranged in a seated state, the knee support (6) constitutes an extension of the seat; if the seat is inseparable, the knee support (6 ) is positioned under the seat and moved to a kneeling position during transition of the chair by any mechanism. 10. A dual-function chair for sitting and kneeling comprising a seat with a variable inclination angle, a backrest, and a movable knee support according to claim 1, characterized in that the seat mount (2) Rotatably connected to the chair base assembly (4) by any type of rotation lock - connected to the rotating shaft (8); said seat mount (2) is rotatably connected to the chord (29) - connected to the rotating shaft (28 ); the other end of the chord (29) is rotatably connected to the back support mounting plate (31)-connected to the rotating shaft (30); the front of the back support mounting plate (31) is rotatably connected to the chord ( 33)-connect the rotating shaft (32); the other end of the chord (33) is rotatably connected to the chair base assembly (4)-connect the rotating shaft (34); the chord (33) is also rotatably connected to The chord (36)-connects the rotating shaft (35); the other end of the chord (36) is rotatably connected to the seat mount (2)-connects the rotating shaft (37); the back support mounting plate (31 ) is rotatably connected to the back support (5) using any type of rotation lock - to the rotation shaft (38); the back support (5) is attached to the backrest (3); if the seat is detachable , then when the chair is arranged in a seated state, the knee support (6) constitutes an extension of the seat; if the seat is inseparable, the knee support (6) 6) To be placed under the seat and move to a kneeling position during transition of the chair by any type of mechanism. 11. A dual-function chair for sitting and kneeling comprising a seat with a variable inclination angle, a backrest, and a movable knee support according to claim 1, characterized in that the seat mount (2) Rotatably connected to the chair base assembly (4) by any type of swivel lock - connected to the swivel shaft (8); the rear of said seat mount (2) is rotatably connected to the chord (41) - connected to the swivel shaft (40); the other end of the chord (41) is rotatably connected to the sliding member (43) - connected to the rotating shaft (42); said sliding member (43) is slidably connected to the Said chair base assembly (4); said sliding part (43) is rotatably connected to the back support (5) using any type of rotation lock - connecting the rotation shaft (45); the back support (5) is attached to backrest (3); if said seat is detachable, said knee support (6) constitutes an extension of said seat when said chair is arranged in a seated position; if said The seat is inseparable, then the knee support (6) is placed under the seat and moved to the kneeling position during the transition of the chair by any type of mechanism. 12. The dual-function chair for sitting and kneeling comprising a seat with a variable inclination angle, a backrest, and a movable knee support according to claim 1, characterized in that the seat mount (2) Rotatably connected to the chair base assembly (4) by any type of rotation lock - connected to the rotating shaft (8); said seat mount (2) is rotatably connected to the chord (47) - connected to the rotating shaft (46 ), the other end of the chord (47) is rotatably connected to the back support mounting plate (49)-connecting the rotating shaft (48); the back support plate (49) is rotatably connected to the chord (51) and (52 )-connect the rotating shafts (50) and (53); the other ends of the chords (51) and (52) are rotatably connected to the chair base assembly (4)-rotating shafts (54) and (55); The ends of the shafts (50), (53), (54) and (55) are arranged relative to each other in a rhomboid pattern; the back support mounting plate (49) is rotatably connected to the back support using any type of rotation lock (5) - connecting the rotating shaft (56); the backrest support (5) is connected to the backrest (3); if the seat is detachable, when the chair is arranged in a seated state, the The knee support (6) constitutes an extension of the seat; if the seat is inseparable, the knee support (6) is provided during the transformation of the chair by any type of mechanism Under the seat and move to a kneeling position. 13. A dual-function chair for sitting and kneeling comprising a seat with a variable inclination angle, a backrest, and a movable knee support according to claim 1, characterized in that the seat mount (2) Rotatably connected to the chair base assembly (4) by any type of rotation lock - connected to the rotating shaft (8); said seat mount (2) is rotatably connected to the chord (29) - connected to the rotating shaft (28 ); the other end of the chord (29) is rotatably connected to the back support mounting plate (31)-connected to the rotating shaft (30); the front of the back support mounting plate (31) is rotatably connected to the chord ( 33)-connect the rotating shaft (32); the other end of the chord (33) is rotatably connected to the chair base assembly (4)-connect the rotating shaft (34); the chord (33) is also rotatably connected to The chord (36)-connects the rotating shaft (35); the other end of the chord (36) is rotatably connected to the seat mount (2)-connecting the rotating shaft (37); the chair includes a mechanism , which during the reclining of the backrest support (5) in the conventional sitting position, causes the seat (1) to recline about the axis (8) together with the mechanism and the knee support; the mechanism is configured such that said back support mounting plate (31) is rotatably connected to a tilting rod (58) - connected to a rotation shaft (32); one end of said tilting rod (58) rests on a chord (61) and The other end, which can be equipped with a swivel wheel (59), rests on the push rod (60); the tilt rod (58) is attached to the back support (5); the backrest (3) is attached to the back support (5); if said seat is detachable, said knee support (6) constitutes an extension of said seat when said chair is arranged in a seated state; if said seat is not detachable , then the knee support (6) is placed under the seat and moves to the kneeling position during transition of the chair by any mechanism.