Seat side support device and wheelchair

Abstract

The application relates to a seat lateral support device which comprises a support plate, two swing rods, a swing rod base, a first locking mechanism and a second locking mechanism. The swing rod comprises a first connecting part, a third connecting part and a second connecting part which are sequentially arranged along the seat height direction. The first connecting part and the second connecting part are arranged along the seat height direction, and the third connecting part is arranged at an angle with the seat height direction. The first connecting part, the second connecting part and the third connecting part form a Z-shaped structure. The first connecting part is connected with the support plate and can rotate relative to the support plate. The first locking mechanism is used for fixing the first connecting part and the support plate. The second connecting part is connected with the swing rod base and can rotate relative to the swing rod base. The second locking mechanism is used for fixing the second connecting part and the swing rod base.

Description

TECHNICAL FIELD

[0001] The present application relates to an auxiliary fixing device, in particular to a seat lateral support device. The present application also relates to a wheelchair. BACKGROUND

[0002] Seat width is an important parameter of a wheelchair, which is related to whether the user's thighs can be comfortably supported from the side. An improper seat width can affect the stability and comfort of the ride. The seat width of the existing wheelchair is not very convenient to adjust, and it needs to operate a relatively large and heavy frame, which is relatively labor-intensive. In addition, the seat of the wheelchair is square, which cannot provide sufficient lateral support for users with a skewed sitting posture. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a seat lateral support device that provides comfortable support for users with different sitting postures, and at the same time, the user does not need to make large and forceful body movements to adjust the seat lateral support device.

[0004] To solve the above technical problems, the present application provides a seat lateral support device, which comprises a support plate, two swing rods, a swing rod seat, a first locking mechanism and a second locking mechanism. The swing rod comprises a first connecting portion, a third connecting portion and a second connecting portion arranged in sequence along the seat height direction. The first connecting portion and the second connecting portion are arranged along the seat height direction, and the third connecting portion is arranged at an angle to the seat height direction. The first connecting portion, the second connecting portion and the third connecting portion form a Z-shaped structure. The first connecting portion is connected with the support plate and can rotate relative to the support plate. The first locking mechanism is used to fix the first connecting portion and the support plate. The second connecting portion is connected with the swing rod seat and can rotate relative to the swing rod seat. The second locking mechanism is used to fix the second connecting portion and the swing rod seat.

[0005] The loosening and locking of the first locking mechanism and the second locking mechanism can be achieved by loosening and tightening the nuts. In this way, the user only needs to loosen a few nuts, move the support plate to the desired position, and then tighten the loosened nuts again to complete the seat width adjustment without the need for large and forceful body movements. The left and right sides of the seat can each be provided with a seat lateral support device. The user can adjust the angle of the support plate to form a " / / " shape structure with the two support plates to adapt to the skewed sitting posture, or to form a " / " shape structure that opens forward to make the seat have better wrapping performance.

[0006] Preferably, to facilitate the adjustment of the position of the support plate in the seat depth direction, the seat lateral support device further comprises a sliding rail and a fourth locking mechanism. The sliding rail is arranged along the seat depth direction, and the two swing rods are arranged at intervals along the seat depth direction. The swing rod seat can move along the sliding rail, and the fourth locking mechanism is used to fix the swing rod seat and the sliding rail.

[0007] The present invention also provides a wheelchair, comprising a seat plate, wherein a seat lateral support device is respectively provided on the left and right sides of the seat plate, and the rocker base of the seat lateral support device is directly or indirectly fixed to the seat plate.

[0008] A wheelchair with two seat lateral support devices can provide personalized support to users with different sitting postures and body shapes, improving the user's riding stability and comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a structural diagram of a seat lateral support device installed on a wheelchair according to the present invention;

[0010] Figure 2 for Figure 1 An exploded view of the seat lateral support device 100 - 1 is shown;

[0011] Figure 3a for Figure 1 A perspective view of the seat lateral support device 100-1 is shown;

[0012] Figure 3b for Figure 3a The seat lateral support device 100-1 is shown along Figure 3a Stereoscopic view after the direction of the middle arrow is adjusted;

[0013] Figure 3c for Figure 3b The seat lateral support device 100-1 is shown along Figure 3b Stereoscopic view after the direction of the middle arrow is adjusted;

[0014] Figure 4 for Figure 1 a perspective view of the metal insert of the support plate shown;

[0015] Figure 5 for Figure 1 The two support plates shown are adjusted to form a "\ / "-shaped structure that opens forward. DETAILED DESCRIPTION

[0016] The seat lateral support device provided by the present invention is used to support the buttocks and / or thighs of a sitting user from the side of the seat, while limiting the movement range of the user's buttocks and / or thighs. It can be installed on a wheelchair or on other seats. It can be installed upright (the support plate is located above the rocker seat in the direction of gravity) or inverted (the support plate is located below the rocker seat in the direction of gravity) to achieve slight adjustments to the seat width and / or improve the wrapping of the seat.

[0017] The present invention will be further described below with reference to the accompanying drawings and one embodiment of the present invention. In this embodiment, the seat lateral support device is mounted on the wheelchair seat plate. Figure 1The seat lateral support device 100-2 and the seat lateral support device 100-1 are mirror arranged, and are respectively fixed to left and right sides of the wheelchair seat plate 200. By adjusting the seat lateral support device 100-2 and the seat lateral support device 100-1, the seat width of the wheelchair seat can be changed and / or the wrapability of the seat can be improved.

[0018] The structure and adjustment method of the seat lateral support device 100-1 will be described below. Figure 2 、 3a to 3c and Figure 4 The structure and adjustment method of the seat lateral support device 100-1 will be described below.

[0019] Referring to Figure 2 , the seat lateral support device 100-1 comprises a support plate 1, two swing rods 2, a swing rod base 3, a first locking mechanism and a second locking mechanism. The swing rod 2 comprises a first connecting part 21, a second connecting part 22 and a third connecting part 23. The first connecting part 21 and the second connecting part 22 are both arranged along a seat height direction h, and the third connecting part 23 is arranged at an angle with the seat height direction h. The first connecting part 21, the third connecting part 23 and the second connecting part 22 are sequentially arranged along the seat height direction h to form a Z-shaped structure. The first connecting part 21 is connected with the support plate 1 and can rotate relative to the support plate 1, and the first locking mechanism is used for fixing the first connecting part 21 and the support plate 1. The second connecting part 22 is connected with the swing rod base 3 and can rotate relative to the swing rod base 3, and the second locking mechanism is used for fixing the second connecting part 22 and the swing rod base 3. The swing rod 2 in the embodiment is a Z-shaped round rod, which is simple in structure and easy to manufacture. In other embodiments of the utility model, the swing rod 2 can also be other shapes, as long as it contains three parts forming a Z-shaped structure, so that the distance between the support plate 1 and the swing rod base 3 along the seat width direction w is adjustable.

[0020] The first locking mechanism comprises a first pressing plate 41 and two first locking bolts 42. In order to realize the stable connection of the first locking bolt 42 and the support plate 1, a metal insert 11 is arranged in the support plate 1. The structure of the metal insert 11 is shown in Figure 4 , and a plurality of through holes are arranged to enable the injection molding material to be more stably combined with the metal insert 11 during injection molding. The first connecting part 21 is clamped between the first pressing plate 41 and the support plate 1, and the first locking bolt 42 is threadedly connected with the first pressing plate 41 and the metal insert 11 in sequence.

[0021] A second connecting part 22 is provided with a plug hole 31 along the seat height direction h on the swing rod base 3, and the second connecting part 22 is inserted into the corresponding plug hole 31. The second locking mechanism comprises four second locking bolts 51 and corresponding locking nuts 52. The swing rod base 3 is further provided with a through hole 32 along the seat height direction h, and the through hole 32 communicates with the two plug holes 31. The second locking bolt 51 penetrates the through hole 32 along the seat width direction w and penetrates the swing rod base 3 at the same time, and is connected with the corresponding locking nut 52.

[0022] To improve the stability of the seat lateral support device, a third locking mechanism is also provided, which includes two third locking bolts 63, a locking seat 62, and two second pressing plates 61 arranged oppositely, the second connecting part 22 is clamped between the two second pressing plates 61, and the third locking bolts 63 pass through the two second pressing plates 61 in the seat width direction w in turn and are threadedly connected with the locking seat 62. To reduce manufacturing costs, the first pressing plate 41 and the second pressing plate 61 are the same in structure. To facilitate assembly, the first pressing plate 41 and the second pressing plate 61 are symmetrical in the seat height direction h and the seat depth direction d.

[0023] The first pressing plate 41 and the support plate 1 prevent the swing rod 2 from rotating accidentally through the friction force on the first connecting part 21, the two second pressing plates 61 prevent the swing rod 2 from rotating accidentally through the friction force on the second connecting part 22, and the swing rod seat 3 prevents the swing rod 2 from rotating accidentally through the friction force on the second connecting part 22. The support plate 1 is prevented from being separated from the swing rod 2 in the height direction h through the friction force of the first pressing plate 41 and the support plate 1 on the first connecting part 21, and the swing rod 2 is prevented from being separated from the swing rod seat 3 in the height direction h through the friction force of the swing rod seat 3 on the second connecting part 22.

[0024] After the first locking bolt 42, the second locking bolt 51, and the third locking bolt 63 are loosened, the support plate 1 is grabbed and forced to adjust the distance between the support plate 1 and the swing rod seat 3 in the seat width direction w, so as to adjust the seat width; the angle between the support plate 1 and the swing rod seat 3 can also be adjusted to meet the special needs of users and provide more suitable support for the hips and thighs of users, thereby improving the wrapability of the seat, for example, see Figure 5 The left and right support plates 1 can be adjusted to a “ / ” shape structure that opens forward.

[0025] When adjusting the spacing between the support plate 1 and the rocker arm seat 3 in the seat width direction w, the position of the support plate 1 in the seat depth direction d also changes. Therefore, the seat lateral support device further includes a slide rail 7 and a fourth locking mechanism. The slide rail 7 is disposed along the seat depth direction d, and the two rocker arms 2 are spaced apart along the seat depth direction d. The rocker arm seat 3 is movable along the slide rail 7, and the fourth locking mechanism is used to secure the rocker arm seat 3 to the slide rail 7. The fourth locking mechanism includes two fourth locking bolts 81 and corresponding locking blocks 82. The slide rail 7 is a C-shaped structure, which limits the locking blocks 82 within the slide rail 7 along the seat height direction h. The fourth locking bolts 81 penetrate the rocker arm seat 3 along the seat height direction h and are threadedly connected to the corresponding locking blocks 82. A limiting step 33 is provided on the rocker arm seat 3 corresponding to the fourth locking bolt 51, and the head of the fourth locking bolt 81 rests on the limiting step 33. The slide rail 7 is fixed to the wheelchair seat 200 via the fixing assembly 71. Loosen the fourth locking bolt 81, grasp the rocker base 3 and apply force to adjust the position of the support plate 1 in the seat depth direction d. The position of the fixing assembly 71 relative to the slide rail 7 in the seat depth direction d is adjustable, so it can adapt to different wheelchair seat panels 200. Figure 1 The size of the seat plate 200 along the seat depth direction d is adjustable. The seat plate 200 is provided with a plurality of mounting holes 201 for fixing the front fixing assembly 71 of the slide rail 7. After the seat plate 200 is adjusted to different lengths, the front fixing assembly 71 of the slide rail 7 can be locked to different mounting holes 201.

[0026] In other embodiments of the present invention, if the slide rail structure is not provided, a plurality of holes may be provided on the seat plate instead, and the position of the support plate 1 in the seat depth direction d may be changed by locking the rocker seat 3 in different holes.

[0027] contrast Figure 3b and 3a ,Will Figure 3a The seat lateral support device in the state shown is pressed Figure 3a After adjusting the direction of the middle arrow, you can get Figure 3b The seat lateral support device in the shown state. Figure 3c and 3b ,Will Figure 3b The seat lateral support device in the state shown is pressed Figure 3b After adjusting the direction of the middle arrow, you can get Figure 3c The user only needs to tighten eight bolts, grasp the support plate 1 and the rocker base 3 and apply light force to adjust the seat lateral support device without requiring large-scale or high-force body movements.

Claims

1. A seat side support device for supporting the hips and / or thighs of a user seated on a seat from the side, characterised in that: The seat lateral support device comprises a support plate (1), two swing rods (2), a swing rod base (3), a first locking mechanism and a second locking mechanism. The swing rod (2) comprises a first connecting part (21), a third connecting part (23) and a second connecting part (22) arranged in sequence along a seat height direction (h). The first connecting part (21) and the second connecting part (22) are arranged along the seat height direction (h), and the third connecting part (23) is arranged at an angle with the seat height direction (h). The first connecting part (21), the second connecting part (22) and the third connecting part (23) form a Z-shaped structure. The first connecting part (21) is connected with the support plate (1) and can rotate relative to the support plate (1). The first locking mechanism is used for fixing the first connecting part (21) and the support plate (1). The second connecting part (22) is connected with the swing rod base (3) and can rotate relative to the swing rod base (3). The second locking mechanism is used for fixing the second connecting part (22) and the swing rod base (3). The seat lateral support device further comprises a slide rail (7) and a fourth locking mechanism. The slide rail (7) is arranged along a seat depth direction (d). The two swing rods (2) are arranged at intervals along the seat depth direction (d). The swing rod base (3) can move along the slide rail (7). The fourth locking mechanism is used for fixing the swing rod base (3) and the slide rail (7).

2. The seat side support apparatus according to claim 1, characterized by: The support plate (1) is provided with a metal insert (11). The first locking mechanism comprises a first pressing plate (41) and a plurality of first locking bolts (42). The first connecting part (21) is clamped between the first pressing plate (41) and the support plate (1). The first locking bolts (42) are threadedly connected with the first pressing plate (41) and the metal insert (11) in sequence.

3. A seat side support apparatus according to claim 2, wherein: The seat lateral support device further comprises a third locking mechanism. The third locking mechanism comprises a plurality of third locking bolts (63), a locking seat (62) and two second pressing plates (61) arranged oppositely. The second connecting part (22) is clamped between the two second pressing plates (61). The third locking bolts (63) pass through the two second pressing plates (61) in sequence along a seat width direction (w) and are threadedly connected with the locking seat (62).

4. The seat side support apparatus of claim 3, wherein: The swing rod (2) is a Z-shaped round rod. The first pressing plate (41) and the second pressing plate (61) are structurally identical.

5. The seat side support apparatus of claim 1 wherein: The swing rod base (3) is provided with a second connecting part (22) along a seat height direction (h). The second connecting part (22) is inserted into the corresponding insertion hole (31). The second locking mechanism comprises a plurality of second locking bolts (51) and corresponding locking nuts (52). The swing rod base (3) is further provided with a through hole (32) along the seat height direction (h). The through hole (32) communicates with the two insertion holes (31). The second locking bolts (51) pass through the through hole (32) along the seat width direction (w) and simultaneously pass through the swing rod base (3) and are connected with the corresponding locking nuts (52).

6. The seat side support apparatus of claim 1 wherein: The fourth locking mechanism comprises fourth locking bolts (81) and corresponding locking blocks (82), the slide rail (7) is a C-shaped structure, the locking blocks (82) in the slide rail (7) are limited in the seat height direction (h), the fourth locking bolts (81) penetrate the swing lever seat (3) in the seat height direction (h) and are in threaded connection with the corresponding locking blocks (82), and the swing lever seat (3) is provided with a limiting step (33) corresponding to the fourth locking bolts (81), and the head of the fourth locking bolt (81) is arranged on the limiting step (33).

7. A wheelchair comprising a seat plate (200), characterized in that: The seat plate (200) is provided with seat side support devices (100-1, 100-2) on the left and right sides respectively, and the swing lever seats (3) of the seat side support devices (100-1, 100-2) are directly or indirectly fixed with the seat plate (200).

Images