Adjustable anti-toppling structure for folding wheelchair

Abstract

The utility model discloses an adjustable anti-tilting structure for a folding wheelchair, which comprises a connecting support connected with the wheelchair, and the connecting support has a first direction and a second direction which are opposite to each other; the sliding seat is movably arranged in the connecting support, and the sliding seat partially extends to the outer side of the connecting support and is connected with the wheel body; the limiting assembly is movably arranged on the connecting support, can be in contact with the sliding seat and is used for limiting the movement of the sliding seat; when the limiting assembly makes contact with the sliding seat without external force, the sliding seat can overcome resistance of the limiting assembly and only move in the first direction under the action of the external force. When the limiting assembly is separated from the sliding base under the action of external force, the sliding base can be stressed and move in the first direction or the second direction. The utility model has the advantages of simple structure and low cost, and is convenient for multi-gear adjustment.

Description

Technical Field

[0001] The utility model relates to the technical field of wheelchair accessories, in particular to an adjustable anti-tilt structure for a folding wheelchair. Background Art

[0002] To ensure smooth traversal of sloped surfaces, existing folding electric wheelchairs often feature a pair of anti-roll wheels at the rear. For example, the anti-roll wheel bracket disclosed in Patent No. CN206548723U is used to prevent the wheelchair from tilting backward. The anti-roll wheel bracket includes a mounting frame connected to the wheelchair, a roller located at the end of the mounting frame, and a radar located in the middle of the mounting frame. These anti-roll wheels are fixed to the wheelchair and are not adjustable, resulting in a limited anti-roll angle. This makes them unsuitable for traversing surfaces with varying slopes, and they are unable to meet the needs of wheelchairs traversing steeper slopes. Furthermore, for folding electric wheelchairs, the anti-roll wheels cannot be adjusted to provide support for standing after folding. Utility Model Content

[0003] The utility model aims to avoid the deficiencies in the prior art and provides an adjustable anti-tilt structure for a folding wheelchair with multiple adjustable gears.

[0004] The utility model solves the technical problem by adopting the following technical solution: an adjustable anti-tilt structure for a folding wheelchair, comprising:

[0005] A connecting support connected to the wheelchair, wherein the connecting support has a first direction and a second direction that are opposite to each other;

[0006] A sliding seat movably disposed in the connecting support, wherein a portion of the sliding seat extends to the outside of the connecting support and is connected to the wheel body;

[0007] A limiting component movably provided on the connecting support, wherein the limiting component can contact the sliding seat and limit the movement of the sliding seat;

[0008] Wherein, when the limiting assembly contacts the sliding seat in the absence of an external force, the sliding seat can overcome the resistance of the limiting assembly and move only in the first direction under the action of an external force;

[0009] When the limiting assembly is separated from the sliding seat under the action of external force, the sliding seat may be subjected to the force and move in the first direction or the second direction.

[0010] In several embodiments, a plurality of shift slots are provided on the upper end of the sliding seat, and the shift slots cooperate with the limiting assembly.

[0011] In several embodiments, the limiting assembly includes a connecting shaft arranged on a connecting support, two connecting arms are arranged on the connecting shaft, and an elastic member is arranged between the connecting arm and the connecting shaft, and the elastic member enables the connecting arm to abut against the sliding seat and the gear slot.

[0012] In several embodiments, a connecting rod is disposed between the two connecting arms.

[0013] In several embodiments, a first guide hole and a first guide assembly are provided on the connecting support, a second guide hole and a second guide assembly are provided on the sliding seat, the first guide assembly passes through the second guide hole and can move along the second guide hole, the second guide assembly passes through the first guide hole and can move along the first guide hole, and the first guide hole and the second guide hole are arranged in parallel.

[0014] In several embodiments, the first guide assembly and the second guide assembly both include a guide column, and a lubricating gasket is provided between the guide column, the connecting support, and the sliding seat.

[0015] In several embodiments, one end of the connecting arm away from the connecting shaft is bent downward to form a resistance end, and the resistance end can be inserted into the gear slot.

[0016] In several embodiments, the sliding seat is provided with a slot for accommodating the wheel body.

[0017] The beneficial effects of the present invention are:

[0018] The utility model has a simple structure, low cost and is easy to adjust.

[0019] The utility model can be adjusted by connecting the supporting seat, the sliding seat and the matching structure of the limiting component without the need for disassembly by tools, and can be directly pulled out to achieve multi-gear adjustment at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are for illustrative purposes only of selected embodiments and do not represent all possible implementations, and should not be considered to limit the scope of the present invention.

[0021] Figure 1 The overall structure of the adjustable anti-tilt structure for a folding wheelchair in Example 1 is schematically shown;

[0022] Figure 2 Schematically shows Figure 1 The structure in side view;

[0023] Figure 3 Schematically shows Figure 1 The enlarged structure of the middle connecting support;

[0024] Figure 4 Schematically shows Figure 1 Amplified structure of the middle sliding seat;

[0025] Figure 5 The adjustable anti-tilt structure for a folding wheelchair of Example 1 is schematically shown in a pulled-out state. DETAILED DESCRIPTION

[0026] Below, the embodiments of the present invention are described in detail with reference to the accompanying drawings. In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described in combination with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in conjunction with the accompanying drawings is not intended to limit the scope of the present invention for which protection is sought, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present invention.

[0028] Example 1

[0029] Ruru Figures 1-4 As shown, the adjustable anti-tilt structure for the folding wheelchair in this embodiment mainly includes a connecting support 10 connected to the wheelchair, a sliding seat 20 movably arranged in the connecting support 10, and a limiting assembly 30 movably arranged on the connecting support 10, wherein the sliding seat 20 partially extends to the outside of the connecting support 10, and a groove 202 is provided at the end of the sliding seat 20 extending to the outside, the groove 202 is used to accommodate the wheel body 40, and anti-tilt is achieved through the wheel body 40, and the limiting assembly 30 can contact the sliding seat 20 and be used to limit the movement of the sliding seat 20.

[0030] The connecting bracket 10 has a first direction and a second direction that are opposite to each other. Here, the first direction is set to the right, and the second direction is set to the left.

[0031] Specifically, when the limiting assembly 30 contacts the sliding seat 20 in the absence of external force, the sliding seat 20 can overcome the resistance of the limiting assembly 30 under the action of external force and move only in the first direction. When the limiting assembly 30 is separated from the sliding seat 20 under the action of external force, the sliding seat 20 can be subjected to force and move in the first direction or the second direction.

[0032] A plurality of shift slots 201 are provided on the upper end of the sliding seat 20 , and the shift slots 201 cooperate with the limiting assembly 30 .

[0033] In addition, the limiting assembly 30 includes a connecting shaft 31 arranged on the connecting support 10, and the connecting shaft 31 is adjusted to have two connecting arms 32, and an elastic member 33 is provided between the connecting arm 32 and the connecting shaft 31, and the elastic member 33 enables the connecting arm 32 to abut against the sliding seat 20 and the gear slot 201, and the connecting arm 32 is bent downward at one end away from the connecting shaft 31 to form a contact end 321, and the contact end 321 can be inserted into the gear slot 201.

[0034] A connecting rod 34 is provided between the two connecting arms 32 to facilitate lifting the two connecting arms 32 at the same time through the connecting rod 34 .

[0035] In order to facilitate the movement of the sliding seat 20 on the connecting support 10, a first guide hole 11 and a first guide component 12 are provided on the connecting support 10, and a second guide hole 21 and a second guide component 22 are provided on the sliding seat 20. The first guide component 12 passes through the second guide hole 21 and can move along the second guide hole 21. The second guide component 22 passes through the first guide hole 11 and can move along the first guide hole 11. The first guide hole 11 and the second guide hole 21 are arranged in parallel.

[0036] Among them, the first guide assembly 12 and the second guide assembly 22 both include a guide column, and a lubricating gasket 23 is arranged between the guide column and the connecting support 10 and the sliding seat 20. The guide column adopts a bolt and nut structure here, and the lubricating gasket 23 is sleeved on the bolt and is located on the upper surface of the sliding seat 20 and the lower surface of the connecting support 10. The sliding resistance is reduced by the lubricating gasket 23, and linear motion is achieved through the cooperation between the guide column and the guide hole.

[0037] Therefore, when the present invention is in use, when the sliding seat 20 needs to be pulled out, the sliding seat 20 can be directly pulled until the limit assembly 30 is locked in the next gear slot 201. When the sliding seat 20 needs to be pushed into the connecting support 10, the connecting rod 34 needs to be pulled to make the connecting arm 32 disengage from the gear slot 201, and then the sliding seat 20 can be pushed in until the connecting arm 32 falls into the gear slot 201 again.

[0038] All methods described herein can be performed in any suitable order. Any and all examples used, or exemplary language (such as "for example") provided herein, are intended solely to better illustrate the present invention and are not intended to limit the scope of the present invention, except as provided in the claims. No language in the detailed description should be construed as indicating any unclaimed essential element for practicing the present invention.

[0039] This disclosure describes preferred embodiments, including the best mode known to the inventors of carrying out the disclosure. Of course, variations of these preferred embodiments will be apparent to those skilled in the art. The inventors anticipate that skilled artisans may employ such variations as appropriate, and the inventors indicate that the disclosure may be practiced in other ways than those specifically described herein. Therefore, the disclosure includes all modifications encompassed by the spirit and scope of the disclosure as defined by the claims. Furthermore, unless otherwise indicated or clearly contradicted by context, the disclosure includes any of the above-described elements and all possible variations thereof.

Claims

1. An adjustable anti-tilt structure for a folding wheelchair, characterized in that: include: A connecting support (10) connected to the wheelchair, wherein the connecting support (10) has a first direction and a second direction that are opposite to each other; A sliding seat (20) is movably arranged in the connecting support (10), wherein a portion of the sliding seat (20) extends to the outside of the connecting support (10) and is connected to the wheel body (40); a limiting assembly (30) movably arranged on the connecting support (10), wherein the limiting assembly (30) can contact the sliding seat (20) and limit the movement of the sliding seat (20); When the limiting assembly (30) contacts the sliding seat (20) without the action of an external force, the sliding seat (20) can overcome the resistance of the limiting assembly (30) and move only in the first direction under the action of an external force; When the limiting assembly (30) is separated from the sliding seat (20) under the action of an external force, the sliding seat (20) can be subjected to the force and move in the first direction or the second direction.

2. The adjustable anti-tilt structure for a folding wheelchair according to claim 1, characterized in that: A plurality of shift slots (201) are provided at the upper end of the sliding seat (20), and the shift slots (201) cooperate with the limiting assembly (30).

3. The adjustable anti-tilt structure for a folding wheelchair according to claim 2, characterized in that: The limiting assembly (30) comprises a connecting shaft (31) arranged on a connecting support (10); the connecting shaft (31) is provided with two connecting arms (32) on an upward adjustment; an elastic member (33) is provided between the connecting arm (32) and the connecting shaft (31); the elastic member (33) enables the connecting arm (32) to abut against the sliding seat (20) and the gear slot (201).

4. The adjustable anti-tilt structure for a folding wheelchair according to claim 3, characterized in that: A connecting rod (34) is provided between the two connecting arms (32).

5. The adjustable anti-tilt structure for a folding wheelchair according to claim 4, characterized in that: The connecting support (10) is provided with a first guide hole (11) and a first guide component (12), and the sliding seat (20) is provided with a second guide hole (21) and a second guide component (22). The first guide component (12) passes through the second guide hole (21) and can move along the second guide hole (21). The second guide component (22) passes through the first guide hole (11) and can move along the first guide hole (11). The first guide hole (11) and the second guide hole (21) are arranged in parallel.

6. The adjustable anti-tilt structure for a folding wheelchair according to claim 5, characterized in that: The first guide assembly (12) and the second guide assembly (22) both include a guide column, and a lubricating gasket (23) is provided between the guide column, the connecting support (10) and the sliding seat (20).

7. The adjustable anti-tilt structure for a folding wheelchair according to claim 3, characterized in that: One end of the connecting arm (32) facing away from the connecting shaft (31) is bent downward to form a contact end (321), and the contact end (321) can be inserted into the gear slot (201).

8. The adjustable anti-tilt structure for a folding wheelchair according to claim 1, characterized in that: The sliding seat (20) is provided with a slot (202), and the slot (202) is used to accommodate the wheel body (40).

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