Cushion for wheelchair

Abstract

The utility model provides a seat cushion for a wheelchair. The left end and the right end of the back side of the seat cushion for the wheelchair are provided with releasing parts which are used for containing frames on the left side and the right side of a wheelchair seat and stretching a rear support of the wheelchair seat. A user can be reliably supported by utilizing the whole area of the wheelchair cushion, a gap is not generated between the wheelchair cushion and a rear support of the wheelchair, the space utilization rate is high, and the wheelchair cushion is comfortable to use.

Description

Technical Field

[0001] The utility model relates to the technical field of wheelchair cushions, in particular to a wheelchair cushion. Background Art

[0002] In the past, wheelchairs only supported the user by the cloth on the seat, which sometimes made it difficult to disperse the user's sitting pressure and maintain a sitting posture. The existing technology adopted a method of placing a cushion on the seat of the wheelchair to solve this problem.

[0003] Among the already disclosed wheelchair cushions, the Japanese patent document "Japanese Patent Publication No. 2020-198960" discloses a wheelchair cushion. The cushion in this technical solution can reduce part of the repulsive force when the user maintains a sitting posture and moves the body in a specified direction.

[0004] Another Japanese patent document, "Utility Model Gazette No. 3218974", discloses a wheelchair cushion, which technical solution includes: 1. A user side portion formed of a material with high air permeability and water absorption; 2. A seat side portion arranged on the seat side portion of the wheelchair, which is formed of a material with higher friction resistance and higher waterproofness than the user side portion; 3. A cover that accommodates the user side portion and the seat side portion inside.

[0005] However, the wheelchair cushions disclosed in the above two technical solutions are both in the shape of a flat quadrilateral. If such cushions are to be arranged on the seat of a wheelchair, the back end of the wheelchair cushion will contact the frames extending downward from the two push handles of the wheelchair, and sometimes the wheelchair cushion cannot be moved inward. In this way, when the wheelchair cushion cannot be set deep into the seat, a gap will be generated between the back end surface of the cushion and the rear support of the wheelchair, which cannot fully utilize the overall area of ​​the wheelchair cushion and cannot reliably support the user. Summary of the invention

[0006] In order to solve the above technical problems, the utility model discloses a wheelchair cushion, which not only does not generate a gap between the seat cushion and the rear support of the wheelchair, but also can reliably support the user by using the entire area of ​​the wheelchair cushion. The technical solution of the utility model is implemented as follows:

[0007] The wheelchair cushion is arranged on the wheelchair seat; the left and right ends of the back side of the wheelchair cushion are provided with release parts for accommodating the frames on the left and right sides of the wheelchair seat and stretching the rear support of the wheelchair seat.

[0008] The release part is used to wrap the frame and is located behind the frame, so there is no gap between the wheelchair cushion and the rear support of the wheelchair seat. This design makes full use of the area of ​​the entire wheelchair seat and can better support the user.

[0009] Preferably, the back side end surface and the left and right side end surfaces of the wheelchair seat cushion are all flat surfaces.

[0010] This design ensures that the wheelchair cushion contacts the wheelchair seat in a straight line at locations other than the release portion, thereby maximizing the effective area of ​​cushioning to ensure reliable support for the user.

[0011] Preferably, after the release portion wraps around the frame, the back side end surface of the wheelchair seat cushion is located on the back side of the frame.

[0012] With this design, the rear end surface of the wheelchair seat cushion at least contacts the back support, and no gap is generated between the rear end surface and the back support.

[0013] Preferably, the frame includes a backrest mounting portion for mounting a backrest for supporting a user's waist, and the release portion accommodates the frame and the backrest mounting portion.

[0014] With this design, when the back support mounting portion protrudes further than the frame, the back support mounting portion and the frame can still be wrapped by the release portion, thereby ensuring that no gap is generated between the rear end surface of the wheelchair cushion and the back support, thereby fully utilizing the overall area of ​​the wheelchair cushion and reliably supporting the user.

[0015] Preferably, the thickness of the upper surface of the wheelchair seat cushion is such that the upper surface of the wheelchair seat cushion is located below the lower end surface of the backing.

[0016] The backing is a structure for supporting the waist of the user, so the wheelchair cushion is installed below the backing so that the backing can fit the waist of the user accurately. In addition, the backing is formed of a harder member or a thicker member than the rear support of the wheelchair seat. Therefore, by pressing the back side end of the wheelchair cushion against the lower end surface of the backing, a gap between the wheelchair cushion and the backing can be avoided.

[0017] Preferably, the corners at the left and right ends of the rear side of the release portion are arc structures.

[0018] With this design, even if the frame contacts the release portion, since the contact portion is a curved surface, the movement can proceed smoothly when the wheelchair cushion moves toward the rear support surface of the wheelchair seat.

[0019] No gap is generated between the wheelchair cushion and the rear support of the wheelchair, and the user can be reliably supported by utilizing the overall area of ​​the wheelchair cushion, the wheelchair seat and the back lining. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] The same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0022] Figure 1 A schematic diagram of the overall structure of a wheelchair in an embodiment of a wheelchair seat cushion;

[0023] Figure 2 It is an enlarged structural diagram of a wheelchair backing and a backing mounting portion in an embodiment of a wheelchair seat cushion;

[0024] Figure 3 is a perspective view of an embodiment of a seat cushion for a wheelchair;

[0025] Figure 4 A plan view of an embodiment of a wheelchair cushion;

[0026] Figure 5 A plan view showing the positional relationship between a frame and a wheelchair cushion in an embodiment of a wheelchair cushion;

[0027] Figure 6 A plan view showing the positional relationship between a frame, a backing mounting portion and a wheelchair cushion in an embodiment of a wheelchair cushion;

[0028] Figure 7 The present invention is a side view showing the positional relationship between a backing and a wheelchair seat cushion in an embodiment of a wheelchair seat cushion.

[0029] In the above drawings, the figure numbers represent:

[0030] 10. Wheelchair;

[0031] 12. Push handle;

[0032] 14, frame;

[0033] 16, rear support member;

[0034] 18, seats;

[0035] 20, seat frame;

[0036] 22, side guards;

[0037] 24, arm support;

[0038] 30, backing;

[0039] 32, backing mounting portion;

[0040] 33, gap;

[0041] 50, wheelchair cushion;

[0042] 50a, rear end surface, 50b, 50c, left and right side end surfaces, 50d, front end surface;

[0043] 52, release department. DETAILED DESCRIPTION

[0044] The following will be combined with the embodiments of the utility model and its drawings to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] In this embodiment, the back side of the user sitting on the wheelchair is the "back side", the front side is the "front side", the left hand side of the user when sitting on the wheelchair is the "left side", and the right hand side is the "right side".

[0046] First, the wheelchair 10 used in this embodiment is as follows Figure 1 and Figure 2 shown.

[0047] It should be noted that the structure of the wheelchair 10 in this embodiment is only an example, and the wheelchair cushion in this embodiment is not only applicable to the wheelchair 10 shown in this embodiment, but also to other wheelchairs.

[0048] The wheelchair 10 includes two frames 14 extending downward from two push handles 12 and a rear support member 16 disposed between the two frames 14. The rear support member 16 is a portion that fits the back of the user.

[0049] A seat 18 on which a user sits is arranged between two seat frames 20 extending forward from the two frames 14 .

[0050] On the outer sides of the two seat frames 20, side guards 22 are provided to protrude upward, and arm supports 24 for supporting the user's forearms are provided on the upper parts of the side guards 22. The side guards 22 protect the sides of the user to prevent the user's clothes from protruding and being caught in the driving wheels.

[0051] In this embodiment, the backing 30 is disposed at the lower part of the rear support 16. The backing 30 is used to support the user's waist. The backing 30 is composed of a harder member or a thicker member than the rear support 16, and is stretched in the left-right direction to a position abutting against the user's waist. The backing 30 can be sewn to the rear support 16 or separated from the rear support 16.

[0052] It is worth mentioning that the backing 30 and the rear support 16 are usually sewn together.

[0053] like Figure 2 As shown, the left and right ends of the backing 30 are fixed by backing mounting portions 32 provided on the two frames 14 .

[0054] The backing mounting portion 32 is formed into a tapered shape by a metal member thinner than the frame 14 , and is fixed to the frame 14 by opening a gap 33 between the surfaces of the frame 14 sufficient for the backing 30 to enter.

[0055] The left and right ends of the backing 30 can be fixed by adjusting the stretching degree through the backing mounting part 32 , and are generally arranged on the back side of the rear support member 16 .

[0056] The number of the backing 30 may be plural.

[0057] The wheelchair cushion 50 in this embodiment is not only applicable to wheelchairs with backing, but also applicable to wheelchairs without backing.

[0058] The wheelchair cushion 50 in this embodiment is as shown in FIG. Figure 3-Figure 7 shown.

[0059] The width W of the wheelchair cushion 50 is substantially the same as the width of the seat 18. Depending on the size of the wheelchair, the width of the wheelchair cushion 50 is also different. The width W of the standard type is 400 mm, the width W of the small type is 380 mm, and the width W of the large type is 430 mm.

[0060] However, the change in the size of the wheelchair does not change the seat depth D of the wheelchair seat cushion 50. The seat depth D of the wheelchair seat cushion 50 in this embodiment is 400 mm.

[0061] In this embodiment, the wheelchair cushion 50 of different thicknesses is provided according to different situations of the users. For users who are often active, the thinner the better because they sometimes step on the ground. For users who are not active often, it is better to use a three-dimensional shape to maintain a stable body position, so the thicker the better. In this embodiment, the thickness of the wheelchair cushion 50 is 30mm-60mm.

[0062] The wheelchair seat cushion 50 is filled with a cushioning substance such as molded polyurethane, latex, or a laminated structure of molded polyurethane and latex.

[0063] The wheelchair seat cushion 50 is constructed by an outer cover enclosing an inner portion formed of a cushioning material such as molded polyurethane, latex, or a laminated structure of molded polyurethane and latex.

[0064] like Figure 4 As shown, the wheelchair seat cushion 50 is substantially quadrilateral, and has release portions 52 formed at both left and right ends on the back side for accommodating the frames 14 provided on both left and right sides of the rear support 16 of the wheelchair 10 .

[0065] The release portion 52 in this embodiment is formed in a shape in which the corners of the left and right ends on the back side are rounded, and is formed in a circular arc or a smooth curve shape convex toward the outside in a plan view. With this design, even if the frame 14 contacts the release portion 52, since the contacting portion is a curved surface, when the wheelchair cushion 50 is placed on the seat 18 and moved to the back side, it can move smoothly.

[0066] However, the end surface shape of the release portion 52 in the present invention is not limited to a circular arc or a smooth curve shape protruding toward the outside of the plane view, and may also be a plane or other shapes.

[0067] In the present embodiment, the rear end face 50a, the left and right side end faces 50b and 50c, and the front end face 50d of the wheelchair seat cushion 50 are flat surfaces.

[0068] By designing the rear end surface 50a of the wheelchair cushion 50 to be a plane, the release portion 50 can maximize the effective area of ​​the wheelchair cushion 50 while accommodating the frame 14. In addition, since the left and right end surfaces 50b and 50c are also planes, the contact with the side guard plate 22 is also a close contact, so the effective area of ​​the cushion can be maximized and the user can be reliably supported.

[0069] like Figure 5 As shown, the release portion 52 allows the frame 14 to be completely received inside the rear end surface 50 a and the left and right side end surfaces 50 b and 50 c.

[0070] In this embodiment, when the wheelchair seat cushion 50 is arranged on the seat 18 and pushed to the rear side, since the frame 14 is located in the release portion 52 and the rear end surface 50a is located on the rear side of the frame 14, the rear end surface 50a is in close contact with the rear support member 16, so that there is no gap between the wheelchair seat cushion 50 and the rear support member 16.

[0071] like Figure 5 As shown, the wheelchair cushion 50 is pressed against the rear support 16 so that the rear support 16 is located further rearward than the frame 14. At the same time, the release portion 52 ensures that the rear end surface 50a of the wheelchair cushion 50 is located rearward of the front side surface of the frame 14.

[0072] like Figure 6 As shown, when the wheelchair 10 is provided with the backing 30 , in addition, each release portion 52 of the wheelchair seat cushion 50 accommodates not only the frame 14 but also the backing mounting portion 32 .

[0073] In this embodiment, the backing mounting portion 32 protrudes from the frame 14 toward the front side, and the release portion 52 is designed to allow each frame 14 and the backing mounting portion 32 to be completely accommodated inside the rear end surface 50a and the left and right side end surfaces 50b, 50c.

[0074] Figure 6 In the embodiment, the corners of the left and right end portions of the back side of the release portion 52 are cut into straight lines. Therefore, even if the end surface of the release portion 52 is a flat surface, the frames 14 and the backing mounting portion 32 can be accommodated so that the rear end surface 50a can reliably contact the rear support member 16, thereby avoiding the occurrence of a gap between the wheelchair seat cushion 50 and the rear support member 16.

[0075] like Figure 7 As shown, in the case where the backing 30 is provided in the wheelchair 10, the thickness of the wheelchair cushion 50 is preferably such that the wheelchair cushion 50 is located below the lower end of the backing 30, and the rear end surface 50a of the wheelchair cushion 50 does not contact the backing 30. By providing the wheelchair cushion 50 below the lower end surface of the backing 30, the backing 30 can be accurately fitted to the waist of the user.

[0076] Furthermore, although the tension of the backing 30 can be adjusted between the left and right backing mounting portions 32, it is difficult to adjust the tension when the wheelchair cushion 50 is in contact with the backing 30. Therefore, in this embodiment, the wheelchair cushion 50 is disposed below the lower end surface of the backing 30, so that the tension of the backing 30 can be easily adjusted.

[0077] In this embodiment, the wheelchair seat cushion 50 is located below the backing 30, so that the rear end surface 50a of the wheelchair seat cushion 50 can reliably contact the rear support member 16. This effectively prevents a gap from being generated between the wheelchair seat cushion 50 and the rear support member 16.

[0078] In the present invention, the shape of the release portion 52 is not limited to the above embodiment, as long as a planar rectangular recess or a planar circular recess is designed inside, and the recess is large enough to accommodate the frame 14 .

[0079] In this embodiment, the upper surface of the wheelchair seat cushion 50 is a flat structure.

[0080] But in fact, the upper surface of the wheelchair cushion 50 in the present invention may also be a three-dimensional shape, for example, a depression is formed where the user's buttocks and thighs contact.

[0081] It should be pointed out that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wheelchair cushion, arranged on a wheelchair seat; characterized in that: The left and right ends of the back side of the wheelchair cushion are provided with release parts for accommodating the frames on the left and right sides of the wheelchair seat and stretching the rear support of the wheelchair seat; The back side end surface and the left and right side end surfaces of the wheelchair seat cushion are all flat surfaces; After the release portion wraps the frame, the back side end surface of the wheelchair seat cushion is located on the back side of the frame; The frame includes a backrest mounting portion for mounting a backrest for supporting a user's waist, and the release portion accommodates the frame and the backrest mounting portion.

2. The wheelchair cushion according to claim 1, characterized in that: The thickness of the upper surface of the wheelchair seat cushion is such that the upper surface of the wheelchair seat cushion is located below the lower end surface of the backing.

3. The wheelchair cushion according to claim 1, characterized in that: The corners at the left and right ends of the rear side of the release portion are arc structures.

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