A seat width adjustable wheelchair structure

Abstract

The utility model provides a seat width adjustable wheelchair structure belongs to wheelchair manufacturing technical field, and this wheelchair includes axle, frame, rear wheel group and front wheel group, and the seat frame is by left frame, right frame and seat board constitute, and left, right frame is through the connecting assembly and is fixed on the axle, and the connecting assembly is by hoop no.

Description

Technical Field

[0001] This utility model relates to the field of wheelchair manufacturing technology, specifically to a wheelchair structure with adjustable seat width. Background Technology

[0002] As an essential mobility aid for people with mobility impairments, the comfort and usability of wheelchairs have always been key design considerations. Currently, most wheelchairs have a fixed seat width, a design with significant drawbacks. Users of different body types have varying needs for seat width. Larger users will feel cramped and uncomfortable in wheelchairs with narrow seats, potentially leading to pressure sores with prolonged use; while thinner users will lack adequate support in wheelchairs with excessively wide seats, resulting in swaying and affecting both comfort and safety. Furthermore, when wheelchairs need to be shared among different users, a fixed seat width cannot meet diverse needs, significantly limiting the wheelchair's applicability. Therefore, addressing the lack of adjustable seat width in existing wheelchair technology necessitates the design of a wheelchair structure with adjustable seat width to solve these problems and improve the wheelchair's practicality and user experience.

[0003] Therefore, in view of the shortcomings of existing technology, it is necessary to design a wheelchair structure with adjustable seat width to solve the above problems. Utility Model Content

[0004] To overcome the shortcomings of existing wheelchairs with fixed seat widths that cannot adapt to the needs of different user body types, this utility model provides a wheelchair structure with adjustable seat width. The adjustable connecting components enable flexible adjustment of the seat width to meet the needs of users with different body types, thereby improving the comfort and applicability of the wheelchair.

[0005] To achieve the above and other related objectives, the technical solution provided by this utility model is: a wheelchair structure with adjustable seat width, including an axle, a frame, a rear wheel assembly, and a front wheel assembly. The axle is horizontally arranged, the rear wheel assembly is rotatably mounted on both ends of the axle, the rear side of the seat frame is mounted on the axle, and the front wheel assembly is rotatably mounted on the front side of the seat frame. The seat frame consists of a left frame, a right frame, and a seat plate. The left frame and the right frame are both fixed to the axle by a connecting assembly. The seat plate is mounted between the left frame and the right frame. The connecting assembly is configured to be axially adjustable on the axle to adjust the seat width.

[0006] The preferred technical solution is as follows: the connecting assembly consists of clamp one, clamp two and connecting rod, clamp one and clamp two are sleeved and fixed on the axle, one end of the connecting rod is inserted into clamp one and the other end of the connecting rod is inserted into clamp two; the seat frame is supported and fixed on clamp one by a support member.

[0007] The preferred technical solution is as follows: the clamp is configured as a C-shaped structure, the clamp is fitted onto the axle and is fastened to the axle by a vertically arranged bolt at the opening, the clamp is provided with a horizontally arranged through hole, one end of the connecting rod extends into the through hole and is provided with a threaded hole, and the bolt is configured such that, in the assembled state, its end extends into the through hole and is tightened into the threaded hole.

[0008] The preferred technical solution is as follows: the clamp two is composed of a C-shaped upper clamp and a C-shaped lower clamp. The upper clamp and the lower clamp are fastened to the axle. The front sections of the upper clamp and the lower clamp are fixedly connected by vertically arranged bolts two. The rear sections of the upper clamp and the lower clamp are fixedly connected by horizontally arranged bolts three. The front section of the upper clamp has a horizontally arranged through hole two. The other end of the connecting rod extends into the through hole two and has a threaded hole two. The bolt two is configured such that, in the assembled state, its end extends into the through hole two and is tightened into the threaded hole two.

[0009] The preferred technical solution is as follows: the rear section of the lower hoop has an upwardly extending connecting plate, and in the assembled state, the rear end sidewall of the upper hoop is fitted to the front side of the connecting plate and is fixedly connected by the horizontally arranged bolts.

[0010] The preferred technical solution is that the inner rings of the clamp, the upper clamp, and the lower clamp are all provided with anti-slip textures.

[0011] A preferred technical solution is as follows: a connecting pipe extending forward and backward is formed on the bottom side of the lower half hoop, an auxiliary wheel support pipe is detachably inserted into the connecting pipe, and an auxiliary wheel is connected to the end of the auxiliary wheel support pipe.

[0012] Due to the application of the above technical solution, the beneficial effects of this utility model are as follows: This utility model provides a wheelchair structure with adjustable seat width. Through adjustable connecting components, the seat width of the wheelchair can be flexibly adjusted, which solves the defects of fixed seat width in the prior art. It has the advantages of simple structure, convenient adjustment, high stability and wide applicability, and provides a more comfortable and practical wheelchair product for people with mobility impairments. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the wheelchair structure involved in this utility model.

[0014] Figure 2 This is a schematic diagram of the connection component involved in this utility model from one perspective.

[0015] Figure 3This is a structural schematic diagram of the connecting component involved in this utility model from another perspective. Detailed Implementation

[0016] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0017] Please see Figures 1-3 It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0018] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] Example: like Figure 1 As shown, the adjustable seat width wheelchair structure provided by this utility model mainly consists of an axle 1, a frame, a rear wheel assembly 2, and a front wheel assembly 3. The axle 1 is horizontally positioned, and the rear wheel assembly 2 includes two rear wheels, which are rotatably mounted at both ends of the axle 1, realizing the rear wheel support and rotation functions of the wheelchair. The rear side of the seat frame is mounted on the axle 1, and the front wheel assembly 3 is rotatably mounted on the front side of the seat frame, forming a complete wheelchair support structure. The seat frame consists of a left frame 4, a right frame 5, and a seat plate 6. The left frame 4 and the right frame 5 are fixed to the axle 1 by a connecting assembly 7, and the seat plate 6 is mounted between the left frame 4 and the right frame 5, providing a seating surface for the user.

[0020] Specific structure and assembly of connecting components Structure and installation of clamp 1 like Figure 2 As shown, clamp 71 has a C-shaped structure with its opening facing upwards, and is fitted onto the outside of axle 1. The opening of clamp 71 is secured to axle 1 by a vertically positioned bolt. Specifically, corresponding screw holes are provided on both sides of the opening of clamp 71. The bolt passes through the screw holes and is tightened downwards, ensuring a tight fit between clamp 71 and axle 1. The front section of clamp 71 has a transverse through-hole 712, the axis of which is parallel to the axis of axle 1, for inserting connecting rod 73. In the assembled state, the end of bolt 71 extends into through-hole 712 and is tightened into threaded hole 71 on connecting rod 73. This structure enhances the connection stability between clamp 71 and axle 1, and also secures connecting rod 73 inserted into through-hole 712. Connecting rod 73 can rotate within through-hole 712 to adjust the connection angle of bolt 71, achieving a more stable clamping effect.

[0021] Structure and installation of clamp 2 Clamp 2 72 consists of a C-shaped upper clamp 721 and a lower clamp 722. The openings of the upper clamp 721 and the lower clamp 722 face each other and clamp onto the axle 1, forming a complete ring structure. The front sections of the upper clamp 721 and the lower clamp 722 are fixedly connected by vertically arranged bolts 2, and the rear sections are fixedly connected by horizontally arranged bolts 3. The front section of the upper clamp 721 has a horizontally penetrating through hole 2 7211, the axis of which is parallel to the axis of the axle 1, for inserting the other end of the connecting rod 73. In the assembled state, the end of bolt 2 extends into through hole 2 7211 and is tightened into threaded hole 2 on the connecting rod 73. This structure also serves to fix clamp 2 72 to the axle 1 and improve the connection stability.

[0022] The rear section of the lower half hoop 722 has an upwardly extending connecting plate 7221. When the upper half hoop 721 and the lower half hoop 722 are assembled, the rear end side wall of the upper half hoop 721 is tightly fitted with the front side of the connecting plate 7221. The three bolts arranged laterally pass through the corresponding screw holes on the connecting plate 7221 and the upper half hoop 721 and are tightened to achieve a fixed connection between the rear sections of the upper half hoop 721 and the lower half hoop 722, ensuring that the entire clamp 72 is firmly fitted onto the axle 1.

[0023] Linkage One end of connecting rod 73 is inserted into hole 712 of clamp 71, and the other end is inserted into hole 7211 of upper clamp 721. When adjusting the seat width, loosen bolts 1 and 3, allowing clamps 71 and 72 to move axially along axle 1, thereby moving the left frame 4 and right frame 5 closer or further apart, thus adjusting the seat width. After adjusting to the appropriate seat width, tighten bolts 1 and 3. Bolt 1 is screwed into threaded hole 1 in hole 712 of connecting rod 73, and bolt 3 is screwed into threaded hole 2 in hole 7211 of connecting rod 73. Simultaneously, clamps 71 and 72 are secured to axle 1 by bolts, ensuring that connecting rod 73 and seat frame remain fixed.

[0024] Support component setup The seat frame is supported and fixed to the clamp 71 by the support member 8. The support member 8 can be a connecting rod or a bracket structure, one end of which is fixedly connected to the clamp 71 and the other end is fixedly connected to the left frame 4 or the right frame 5, providing reliable support for the seat frame and ensuring that the seat plate 6 remains stable when bearing the user's weight, without tilting or shaking.

[0025] The function of anti-slip texture The inner rings of the first clamp 71, the upper clamp 721, and the lower clamp 722 are all equipped with anti-slip textures. These textures can be raised stripes, a mesh pattern, or other anti-slip structures, and their function is to increase the friction between the clamp and the axle 1. When the clamp is bolted to the axle 1, the anti-slip textures are in close contact with the surface of the axle 1, effectively preventing the clamp from slipping on the axle 1. Even when the wheelchair is subjected to vibration or external forces during use, the position of the connecting components remains stable, thus ensuring that the seat width does not change and improving the safety and reliability of wheelchair use.

[0026] Installation of auxiliary wheels The lower half hoop 722 has a connecting tube 7222 extending forward and backward on its bottom side. An auxiliary wheel support tube 9 is detachably inserted into the connecting tube 7222. An auxiliary wheel 10 is connected to the end of the auxiliary wheel support tube 9 to improve the stability of the wheelchair.

[0027] Therefore, this utility model has the following advantages: This utility model's adjustable seat width wheelchair structure is suitable for various scenarios. In home use, when family members of different body types need to use the wheelchair, there's no need to change wheelchairs; simply adjusting the seat width can meet the needs of different individuals, improving wheelchair efficiency and reducing operating costs. In hospitals, nursing homes, and other institutions, where there are many patients or elderly people of varying body types, the adjustable seat width wheelchair provides suitable seating space for everyone, improving the work efficiency of caregivers while also enhancing user comfort and satisfaction.

[0028] In practical use, the reasonable structural design of the connecting components and the simple and convenient adjustment operation allow even users with mobility impairments to easily adjust the seat width with the help of others. The anti-slip texture ensures that the adjusted seat width will not easily change, guaranteeing the safety of the wheelchair during use. Furthermore, the components of this structure are simple to manufacture and have low cost, which is conducive to large-scale production and widespread application.

[0029] In summary, this utility model achieves flexible adjustment of wheelchair seat width through adjustable connecting components, overcoming the shortcomings of fixed seat width in the prior art. It has advantages such as simple structure, convenient adjustment, high stability, and wide applicability, providing a more comfortable and practical wheelchair product for people with mobility impairments.

[0030] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A wheelchair structure with adjustable seat width, comprising an axle, a seat frame, a rear wheel assembly, and a front wheel assembly, wherein the axle is horizontally arranged, the rear wheel assembly is rotatably mounted on both ends of the axle, the rear side of the seat frame is mounted on the axle, and the front wheel assembly is rotatably mounted on the front side of the seat frame, characterized in that: The seat frame consists of a left frame, a right frame, and a seat plate. The left frame and the right frame are both fixed to the axle by a connecting assembly. The seat plate is mounted between the left frame and the right frame. The connecting assembly is configured to be axially adjustable on the axle to adjust the seat width.

2. The wheelchair structure with adjustable seat width according to claim 1, characterized in that: The connecting assembly consists of clamp one, clamp two, and a connecting rod. Clamp one and clamp two are sleeved and fixed on the axle. One end of the connecting rod is inserted into clamp one, and the other end of the connecting rod is inserted into clamp two. The seat frame is supported and fixed on clamp one by a support member.

3. The wheelchair structure with adjustable seat width according to claim 2, characterized in that: The clamp is configured as a C-shaped structure. The clamp is fitted onto the axle and is fastened to the axle by a vertically arranged bolt at the opening. The clamp has a horizontally arranged through hole. One end of the connecting rod extends into the through hole and has a threaded hole. The bolt is configured such that, in the assembled state, its end extends into the through hole and is tightened into the threaded hole.

4. The wheelchair structure with adjustable seat width according to claim 3, characterized in that: The second clamp consists of a C-shaped upper clamp and a C-shaped lower clamp. The upper clamp and the lower clamp are fastened to the axle. The front sections of the upper clamp and the lower clamp are fixedly connected by two vertically arranged bolts, and the rear sections of the upper clamp and the lower clamp are fixedly connected by three horizontally arranged bolts. The front section of the upper clamp has a two horizontally arranged through hole. The other end of the connecting rod extends into the two through hole and has a two threaded hole. The two bolts are configured such that, in the assembled state, their ends extend into the two through hole and are tightened into the two threaded holes.

5. The wheelchair structure with adjustable seat width according to claim 4, characterized in that: The lower half of the hoop has an upwardly extending connecting plate at its rear end. When the upper half of the hoop and the lower half of the hoop are assembled, the rear end sidewall of the upper half of the hoop is fitted against the front side of the connecting plate and is fixedly connected by the horizontally arranged bolts.

6. The wheelchair structure with adjustable seat width according to claim 4, characterized in that: The inner rings of the clamp, the upper clamp, and the lower clamp are all provided with anti-slip textures.

7. The wheelchair structure with adjustable seat width according to claim 4, characterized in that: The bottom side of the lower half hoop has a connecting pipe extending forward and backward, and an auxiliary wheel support pipe is detachably inserted into the connecting pipe. An auxiliary wheel is connected to the end of the auxiliary wheel support pipe.

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