Wheelchair with safety structure

Abstract

The utility model discloses a wheelchair with safety structures, which comprises a supporting bottom plate, a wheel axle fixedly connected to the bottom of the supporting bottom plate and main wheels rotatably connected to two ends of the wheel axle, and safety supporting structures are symmetrically arranged on the supporting bottom plate. The safety supporting structure comprises connecting sliding grooves, connecting sliding strips, connecting rods, safety supporting wheels, poke rods and through sliding grooves, the connecting sliding grooves are symmetrically formed in the two sides of the bottom face of the supporting bottom plate, the ends, facing the rear end of the wheelchair, of the connecting sliding grooves are open, and the other ends of the connecting sliding grooves are closed; by means of the designed safety supporting structure, the risk that the wheelchair topples backwards in the uphill process can be reduced, a person can pull a poke rod backwards to drive a connecting sliding strip to slide in a connecting sliding groove, so that the safety supporting wheel extends out and is located at the rear end of the main wheel, in this way, the rear end of the wheelchair can be supported and reinforced, and the safety of the wheelchair is improved. And the safety of the wheelchair in the uphill process is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a wheelchair with a safety structure. Background Art

[0002] A wheelchair is a common medical device and a means of transportation for the physically disabled or other people with limited mobility. Generally, a wheelchair includes two main wheels and two auxiliary wheels. The main wheels are the main wheel bodies that bear the load, and the auxiliary wheels play a role in improving the stability of the wheelchair. However, this ordinary wheelchair still has certain deficiencies in daily use. When going uphill, the whole wheelchair tilts upward and the center of gravity moves backward. Since the auxiliary wheels are generally arranged at the front end of the main wheels, the support stability at the rear end of the wheelchair is poor and it is very easy to tip backward. Therefore, there is a safety hazard of tipping backward when the ordinary wheelchair travels uphill, and a new type of wheelchair with a safety support structure needs to be designed to solve this problem. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a wheelchair with a safety structure to solve the problem of the safety hazard of tipping backward during the uphill process of the ordinary wheelchair mentioned in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A wheelchair with a safety structure includes a support bottom plate, a wheel axle fixedly connected to the bottom of the support bottom plate, and main wheels rotatably connected to both ends of the wheel axle. Safety support structures are symmetrically arranged on the support bottom plate. The safety support structure includes a connection chute, a connection slide bar, a connecting rod, a safety support wheel, a toggle rod, and a through chute. The connection chutes are symmetrically opened on both sides of the bottom surface of the support bottom plate, and one end of the connection chute facing the rear end of the wheelchair is open and the other end is closed. The connection slide bar is slidably connected inside the connection chute. The bottom of the rear end of the connection slide bar is fixedly connected to the connecting rod. The safety support wheel is connected to the bottom end of the connecting rod. The toggle rod is fixed to the top of the front end of the connection slide bar and extends out of the through chute opened on the surface of the support bottom plate.

[0005] Preferably, the safety support structure further includes a reinforcing rod, and the reinforcing rod is fixedly connected to one side of the connecting rod.

[0006] Preferably, a strip-shaped groove is penetrated and opened on the surface of the support bottom plate at the top of the connection chute, and the toggle rod penetrates through the strip-shaped groove.

[0007] Preferably, the connection slide bar is T-shaped in side view and fits with the inner wall of the connection chute.

[0008] Preferably, an armrest is arranged on the top of the support bottom plate. The rear end of the armrest is L-shaped, and the bottom end of the armrest is fixedly connected to the end of the support bottom plate.

[0009] Preferably, the safety support structure further includes a locking component, and the locking component is connected between the armrest and the top end of the toggle rod.

[0010] Preferably, the locking component includes a movable socket head, a chuck, a chuck hole and a spring. The movable socket head is elastically connected to the top end of the toggle rod through the spring. The chuck is fixed to the top end of the movable socket head. The chuck holes are formed in the bottom surface of the armrest in a front-back arrangement, and the chuck is inserted into one of the chuck holes.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] Through the designed safety support structure, the risk of the wheelchair tipping backward during the uphill process can be reduced. The user can pull the toggle rod backward to drive the connecting slide bar to slide inside the connecting chute, thereby extending and deploying the safety support wheel, which is located at the rear end of the main wheel. In this way, the rear end of the wheelchair can be supported and strengthened, improving the safety of the wheelchair during the uphill process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a side view of the present utility model;

[0014] Figure 2 is a front view cross-sectional view of the safety support structure of the present utility model in a retracted state;

[0015] Figure 3 is a front view cross-sectional view of the safety support structure of the present utility model in an extended state;

[0016] Figure 4 is a top view of the support base plate of the present utility model;

[0017] Figure 5 of the present utility model Figure 2 is a side view cross-sectional view of the connection between the connecting chute and the connecting slide bar in;

[0018] Figure 6 of the present utility model Figure 2 is an enlarged schematic view of the locking component in;

[0019] In the figure: 100, support base plate; 200, wheel axle; 300, main wheel; 400, safety support structure; 401, connecting chute; 402, connecting slide bar; 403, connecting rod; 404, safety support wheel; 405, reinforcing rod; 406, toggle rod; 407, locking component; 4071, movable socket head; 4072, chuck; 4073, chuck hole; 4074, spring; 408, through chute; 500, armrest. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Embodiment

[0022] Please refer to Figures 1 to 6 , which is an embodiment of the present invention. This embodiment provides a technical solution: a wheelchair with a safety structure, including a support bottom plate 100, a wheel axle 200 fixedly connected to the bottom of the support bottom plate 100, and main wheels 300 rotatably connected to both ends of the wheel axle 200. Safety support structures 400 are symmetrically arranged on the support bottom plate 100, which can support and reinforce the wheelchair safely. The safety support structure 400 includes a connection chute 401, a connection slide bar 402, a connecting rod 403, a safety support wheel 404, a toggle rod 406, and a through chute 408. The connection chutes 401 are symmetrically opened on both sides of the bottom surface of the support bottom plate 100, and one end of the connection chute 401 facing the rear end of the wheelchair is open and the other end is closed. The connection slide bar 402 is slidably connected inside the connection chute 401, and the rear end of the connection slide bar 402 can extend out from the opening of the connection chute 401. The bottom of the rear end of the connection slide bar 402 is fixedly connected to the connecting rod 403. The safety support wheel 404 is connected to the bottom end of the connecting rod 403. The toggle rod 406 is fixed to the top of the front end of the connection slide bar 402 and extends out through the through chute 408 opened on the surface of the support bottom plate 100. There are two through chutes 408, which are communicated with the connection chute 401. The toggle rod 406 passes through the through chute 408. Personnel can slide the toggle rod 406 in the through chute 408 by toggling the toggle rod 406, so as to drive the connection slide bar 402 to move inside the connection chute 401, and extend the safety support wheel 404 out from the rear end of the wheelchair. In this way, the rear end of the wheelchair can be supported and reinforced, avoiding tipping backward when going uphill and improving safety.

[0023] In this embodiment, preferably, the safety support structure 400 further includes a reinforcing rod 405, and the reinforcing rod 405 is fixedly connected to one side of the connecting rod 403, which plays a role in enhancing the strength.

[0024] In this embodiment, preferably, the connection slide bar 402 is T-shaped in side view and fits the inner wall of the connection chute 401, which plays a role in preventing detachment.

[0025] In this embodiment, preferably, a handrail 500 is provided on the top of the support base plate 100. The rear end of the handrail 500 is in an L-shaped structure, and the bottom end of the handrail 500 is fixedly connected to the end of the support base plate 100. After a person sits on the wheelchair, the hand can be placed on the handrail 500.

[0026] In this embodiment, preferably, the safety support structure 400 further includes a locking assembly 407 that can lock the safety support structure 400. The locking assembly 407 is connected between the handrail 500 and the top end of the toggle lever 406. The locking assembly 407 includes a movable socket 4071, a locking head 4072, a locking hole 4073, and a spring 4074. The movable socket 4071 is elastically connected to the top end of the toggle lever 406 by the spring 4074. The spring 4074 can push the movable socket 4071 upward. The locking head 4072 is fixed to the top end of the movable socket 4071. The locking holes 4073 are formed in the bottom surface of the handrail 500 in a front-back arrangement. The locking head 4072 is inserted into the interior of one of the locking holes 4073, thereby locking the safety support structure 400. If it is necessary to deploy the safety support wheel 404, the movable socket 4071 can be toggled downward to pull it out of the interior of the locking hole 4073, and then the toggle lever 406 is toggled backward, and the locking head 4072 is reinserted into the interior of the other locking hole 4073.

[0027] Although the embodiments of the present invention have been shown and described (see the above detailed description), for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wheelchair with a safety structure, comprising a supporting base plate (100), a wheel axle (200) fixedly connected to the bottom of the supporting base plate (100), and main wheels (300) rotatably connected to both ends of the wheel axle (200), characterized in that: A safety support structure (400) is symmetrically arranged on the support base plate (100), and the safety support structure (400) comprises a connecting slide groove (401), a connecting slide bar (402), a connecting rod (403), a safety support wheel (404), a toggle rod (406) and a through slide groove (408). The connecting slide groove (401) is symmetrically arranged on both sides of the bottom surface of the support base plate (100), and the connecting slide groove (401) is open at one end toward the rear end of the wheelchair and closed at the other end. The connecting slide bar (402) is slidably connected to the inside of the connecting slide groove (401), and the rear end bottom of the connecting slide bar (402) is fixedly connected to the connecting rod (403), the safety support wheel (404) is connected to the bottom end of the connecting rod (403), and the toggle rod (406) is fixed to the front end top of the connecting slide bar (402) and extends out of the through slide groove (408) arranged on the surface of the support base plate (100).

2. A wheelchair with a safety structure according to claim 1, characterized in that: The safety support structure (400) further comprises a reinforcement rod (405), wherein the reinforcement rod (405) is fixedly connected to one side of the connection rod (403).

3. A wheelchair with a safety structure according to claim 1, characterized in that: A strip groove is provided on the surface of the supporting bottom plate (100) at the top of the connecting slide groove (401), and the toggle rod (406) passes through the strip groove.

4. A wheelchair with a safety structure according to claim 1, characterized in that: The connecting slide bar (402) has a T-shaped structure when viewed from the side, and fits closely with the inner wall of the connecting slide groove (401).

5. A wheelchair with a safety structure according to claim 1, characterized in that: A handrail (500) is arranged on the top of the supporting bottom plate (100); the rear end of the handrail (500) is in an L-shaped structure; the bottom end of the handrail (500) is fixedly connected to the end of the supporting bottom plate (100).

6. A wheelchair with a safety structure according to claim 5, characterized in that: The safety support structure (400) further comprises a locking assembly (407), wherein the locking assembly (407) is connected between the handrail (500) and the top end of the toggle rod (406).

7. A wheelchair with a safety structure according to claim 6, characterized in that: The locking assembly (407) comprises a movable sleeve (4071), a clamping head (4072), a clamping hole (4073) and a spring (4074); the movable sleeve (4071) is elastically connected to the top end of the toggle rod (406) via the spring (4074); the clamping head (4072) is fixed to the top end of the movable sleeve (4071); the clamping holes (4073) are arranged one behind the other on the bottom surface of the handrail (500); and the clamping head (4072) is inserted into one of the clamping holes (4073).

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