Wheelchair support with embedded structure

By binding carbon fiber cloth to the pre-embedded nut and setting a pre-embedded groove on the main body of the bracket, the problem of bracket breakage during the embedding of the pre-embedded nut was solved, achieving stable connection and efficient assembly.

CN224126193UActive Publication Date: 2026-04-17ZHEJIANG ZHONGLEI MEDICAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG ZHONGLEI MEDICAL TECH CO LTD
Filing Date
2025-04-03
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

Existing pre-embedded nuts are prone to breakage of the wheelchair frame due to excessive pressure when being embedded, resulting in material waste.

Method used

Carbon fiber cloth is tied to the pre-embedded part of the pre-embedded nut, and a pre-embedded groove is set on the main body of the bracket. The carbon fiber cloth is fixed to the main body of the bracket. The shape of the pre-embedded groove matches the edge section to avoid the bracket breaking due to excessive pressure. The friction is increased by the staggered knife marks to prevent slippage.

Benefits of technology

This effectively avoids bracket breakage during the embedding of pre-embedded nuts, improves assembly efficiency and aesthetics, and ensures the reliability and stability of the connection.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224126193U_ABST
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Abstract

The utility model discloses a wheelchair support with an embedded structure. The wheelchair support comprises a support body and an embedded nut. Wherein the embedded nut is divided into an embedded part at the tail end and a connecting part at the outer end. And carbon fiber cloth is bound on the embedded part. And an embedded groove matched with the embedded part is formed in the bracket main body. The embedded nuts are embedded in the embedded grooves and fixed to the support body through the carbon fiber cloth. According to the utility model, the embedded part is divided into the winding section in the middle and the two edge sections at the two ends of the winding section. The size of the two edge sections is larger than that of the winding section, so that a concave winding area is formed between the two edge sections. The carbon fiber cloth can be rapidly and accurately wound in the winding area, and the carbon fiber cloth can be effectively prevented from sliding in the embedding process of the embedded nut.
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Description

Technical Field

[0001] This utility model belongs to the field of wheelchair technology, specifically relating to a wheelchair bracket with a pre-embedded structure. Background Technology

[0002] A wheelchair pre-embedded nut is a special nut that is installed on the wheelchair frame or components. It is typically embedded into holes in the frame or components for use in subsequent assembly. Pre-embedded nuts provide a reliable threaded connection point for securing other components, parts, or accessories. This design simplifies the assembly process, improves efficiency, and enhances aesthetics.

[0003] However, existing pre-embedded nuts are typically inserted into holes in wheelchairs using an interference fit. This method requires applying significant force to the pre-embedded nut. But when the wall of the hole into which the pre-embedded nut is inserted is thin, applying pressure to insert the nut can easily cause the support to break, resulting in material loss. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, this utility model provides a wheelchair bracket with a pre-embedded structure to solve the technical problem of difficulty in connecting the pre-embedded nut to the wheelchair bracket.

[0005] To achieve the above objectives, the specific technical solution of this utility model is as follows:

[0006] A wheelchair bracket with a pre-embedded structure includes a bracket body and a pre-embedded nut. The pre-embedded nut consists of a pre-embedded portion at the tail end and a connecting portion at the outer end. Carbon fiber cloth is bound to the pre-embedded portion. A pre-embedded groove is formed on the bracket body to mate with the pre-embedded portion. The pre-embedded nut is embedded in the pre-embedded groove and fixed to the bracket body by the carbon fiber cloth.

[0007] Furthermore, the pre-embedded portion consists of a central winding segment and two edge segments located at both ends of the winding segment. The dimensions of the two edge segments are larger than the dimensions of the winding segment.

[0008] Furthermore, the winding section has multiple interlaced decorative cut marks.

[0009] Furthermore, the outer ring of the edge segment is divided into two parallel limiting parts and a transition part connecting the ends of the two limiting parts. The shape of the pre-embedded groove is the same as the shape of the edge segment.

[0010] Furthermore, the transition section has an arc-shaped structure.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] This invention provides a pre-embedded part at the tail end of the pre-embedded nut and binds carbon fiber cloth to the pre-embedded part. The carbon fiber cloth is used to connect with the pre-embedded groove on the support body, which effectively avoids the breakage of the support body due to excessive pressure when embedding the pre-embedded nut.

[0013] This invention uses a pre-embedded portion consisting of a central winding section and two edge sections at either end of the winding section. The dimensions of the two edge sections are larger than the dimensions of the winding section, creating a concave winding area between the two edge sections. The carbon fiber cloth can be quickly and accurately wound within this winding area, effectively preventing slippage of the carbon fiber cloth during the embedding of the pre-embedded nut. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the pre-embedded nut in this utility model;

[0016] Figure 3 This is a schematic diagram showing the relative positions of the winding section and the edge section in this utility model;

[0017] Figure 4 This is a cross-sectional schematic diagram of the edge segment in this utility model. Figure 3 (Cross-sectional view along the AA direction).

[0018] Reference numerals in the attached drawings: 1. Main body of the bracket; 2. Embedded nut; 3. Embedded part; 3-1. Winding section; 3-2. Edge section; 4. Connecting part; 5. Limiting part; 6. Transition part. Detailed Implementation

[0019] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper side", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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.

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] like Figure 1 and 2As shown, a wheelchair bracket with a pre-embedded structure includes a bracket body 1 and a pre-embedded nut 2. The pre-embedded nut 2 consists of a pre-embedded portion 3 at the tail end and a connecting portion 4 at the outer end. Carbon fiber cloth is bound to the pre-embedded portion 3. A pre-embedded groove is formed on the bracket body 1 to mate with the pre-embedded portion 3. The pre-embedded nut is embedded in the pre-embedded groove and fixed to the bracket body 1 by the carbon fiber cloth.

[0022] The specific structure is as follows: Figure 3 As shown, the pre-embedded part 3 is divided into a middle winding section 3-1 and edge sections 3-2 located at both ends of the winding section 3-1. The dimensions of the two edge sections 3-2 are larger than the dimensions of the winding section 3-1, creating a concave winding area between the two edge sections 3-2. Carbon fiber cloth can be quickly and accurately wound within this winding area.

[0023] like Figure 4 As shown, the outer ring of the edge segment 3-2 is divided into two parallel limiting parts 5 and a transition part 6 connecting the ends of the two limiting parts 5. The transition part 6 has an arc-shaped structure. The shape of the pre-embedded groove is the same as that of the edge segment 3-2, which effectively prevents the pre-embedded part 3 of the pre-embedded nut 2 from rotating after being embedded in the pre-embedded groove, and from causing the carbon fiber cloth filled on the winding segment 3-1 to rotate synchronously, ultimately resulting in a gap between the pre-embedded nut 2 and the bracket body 1.

[0024] Furthermore, multiple intersecting serrations are made on the winding section 3-1 to increase the friction between the carbon fiber cloth and the winding section 3-1 when the carbon fiber cloth is wound on the winding section 3-1, so as to prevent the carbon fiber cloth from slipping on the winding section 3-1 and affecting the final product effect.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A wheelchair bracket with a pre-embedded structure, comprising a bracket body (1) and a pre-embedded nut (2), characterized in that: The pre-embedded nut (2) is divided into a pre-embedded part (3) at the tail end and a connecting part (4) at the outer end; carbon fiber cloth is tied on the pre-embedded part (3); a pre-embedded groove that matches the pre-embedded part (3) is opened on the bracket body (1); the pre-embedded nut is embedded in the pre-embedded groove and fixed to the bracket body (1) by the carbon fiber cloth.

2. The wheelchair support with pre-embedded structure according to claim 1, characterized in that: The pre-embedded part (3) includes a middle winding section (3-1) and two edge sections (3-2) located at both ends of the winding section (3-1); the dimensions of the two edge sections (3-2) are larger than the dimensions of the winding section (3-1).

3. The wheelchair support with pre-embedded structure according to claim 2, characterized in that: The winding section (3-1) has multiple intersecting knife marks.

4. The wheelchair support with pre-embedded structure according to claim 2, characterized in that: The outer ring of the edge section (3-2) is divided into two parallel limiting parts (5) and a transition part (6) connecting the ends of the two limiting parts (5); the shape of the pre-embedded groove is the same as the shape of the edge section (3-2).

5. The wheelchair support with pre-embedded structure according to claim 4, characterized in that: The transition section (6) has an arc-shaped structure.