Barrier-crossing wheelchair

Abstract

The utility model discloses an obstacle-crossing wheelchair, which aims at having a seat lifting function, being capable of crossing obstacles and being suitable for various scenes, and adopts the technical scheme that the obstacle-crossing wheelchair comprises a chassis, a seat and two crawler walking mechanisms, the two crawler walking mechanisms are arranged on the chassis at intervals to drive the chassis to move, and the seat is arranged on the chassis. A lifting mechanism is arranged on the chassis, the seat is located above the lifting mechanism and connected with the lifting mechanism, and the lifting mechanism drives the seat to ascend and descend.

Description

Technical Field

[0001] The utility model belongs to the technical field of wheelchairs, and more specifically, relates to an obstacle - crossing wheelchair. Background Art

[0002] A wheelchair is a tool to assist people with walking difficulties in moving. Therefore, the convenience of its movement is very important, and it needs to be able to meet the movement in various scenarios.

[0003] Patent 202410241462.6 discloses a crawler shock - absorbing structure and its crawler wheelchair, which includes a right crawler assembly, a left crawler assembly, and a vehicle body chassis; the vehicle body chassis includes a protective frame, a connecting shaft, a vertical rod, an outrigger, and a rotating shaft. The two ends of the connecting shaft are respectively installed with the right crawler assembly and the left crawler assembly, and the top of the connecting shaft is rotatably connected to the protective frame; an outrigger is fixed to the side of the protective frame; a rotating shaft is provided at the top of the outrigger, and two vertical rods are fixed to the side of the connecting shaft; a torsion elimination conversion control component is provided on the side of the vehicle body chassis, and the torsion elimination conversion control component includes a rocker arm and two double - acting compression shock absorbers. The center of the rocker arm is rotatably connected to the rotating shaft, and the two ends of the rocker arm are respectively rotatably connected to the two vertical rods through a double - acting compression shock absorber.

[0004] The above - mentioned crawler wheelchair uses crawlers as the walking mechanism, so that the wheelchair can adapt to various terrains and cross various obstacles. However, this kind of crawler wheelchair needs to have a lower center of gravity to ensure that the wheelchair is more stable when crossing obstacles. Therefore, the seat has to be set lower. However, if the seat is too low, it will affect other usage experiences of the user, such as the need to change from the wheelchair to other seats when dining, and it is easy to not reach the elevator buttons, etc. Summary of the Utility Model

[0005] The main purpose of the present utility model is to provide an obstacle - crossing wheelchair, aiming to have a seat lifting function, be able to cross obstacles, and be applicable to various scenarios.

[0006] According to the first aspect of the present utility model, there is provided an obstacle - crossing wheelchair, including a chassis, a seat, and two crawler walking mechanisms. The two crawler walking mechanisms are arranged at intervals on the chassis to drive the chassis to move. An elevating mechanism is provided on the chassis, the seat is located above the elevating mechanism and is connected to the elevating mechanism, and the elevating mechanism drives the seat to lift.

[0007] In the above - mentioned obstacle - crossing wheelchair, the elevating mechanism includes an electric lifting column, the top of the electric lifting column is the output end, and the output end of the electric lifting column is connected to the seat.

[0008] In the above - mentioned obstacle - crossing wheelchair, the electric lifting column is a three - section electric lifting column.

[0009] In the above-mentioned obstacle-crossing wheelchair, a bellows cover is provided between the chassis and the seat, and the lifting mechanism is arranged through the bellows cover.

[0010] In the above-mentioned obstacle-crossing wheelchair, two inverted U-shaped brackets are arranged at intervals in the horizontal direction on the chassis. The lifting mechanism is located between the two brackets, and a support plate is arranged on the two brackets. The bellows cover connects the support plate and the seat.

[0011] In the above-mentioned obstacle-crossing wheelchair, the crawler traveling mechanism includes a crawler, a driving motor fixed on the chassis, and a driven wheel rotatably arranged on the chassis. A driving wheel is provided on the driving motor, and the crawler is drivingly connected to the driving wheel and the driven wheel.

[0012] In the above-mentioned obstacle-crossing wheelchair, the crawler traveling mechanism includes a support wheel. The support wheel is located between the driving wheel and the driven wheel, and the support wheel is rotatably arranged on the chassis.

[0013] In the above-mentioned obstacle-crossing wheelchair, the driving wheel and the driven wheel in the crawler traveling mechanism are arranged at intervals in a first direction. The chassis includes a first disc body and a second disc body connected in sequence in the first direction. The driving motor is fixed on the first disc body, and the first disc body can be adjusted in position in the first direction.

[0014] In the above-mentioned obstacle-crossing wheelchair, a pedal is provided on the chassis.

[0015] One of the technical solutions in the above technical solutions of the present invention has at least the following advantages or beneficial effects:

[0016] In the present invention, a lifting mechanism is provided on the chassis. The seat can be adjusted in height under the drive of the lifting mechanism. When the wheelchair is moving, the seat can be in a low position to lower the center of gravity. Coupled with the adoption of the crawler traveling mechanism, it can cross obstacles and is applicable to various scenarios. When the wheelchair is not moving, the height of the seat can be increased to meet other needs such as dining and operating equipment, improving the use experience of the occupant. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the drawings and embodiments;

[0018] Figure 1 is a schematic structural diagram of the first embodiment of the present invention;

[0019] Figure 2 is another schematic structural diagram of the first embodiment of the present invention;

[0020] Figure 3 is a schematic structural diagram of the chassis of the first embodiment of the present invention.

[0021] Among them, the reference signs of each figure are as follows:

[0022] 1. Chassis; 11. First disk body; 12. Second disk body; 2. Seat; 3. Crawler traveling mechanism; 31. Crawler; 32. Driving motor; 33. Driven wheel; 34. Driving wheel; 35. Supporting wheel; 4. Lifting mechanism; 5. Bellows cover; 6. Bracket; 7. Support plate; 8. Pedal. Detailed implementation manners

[0023] The following will describe in detail the implementation manners of the present utility model. The examples of the implementation manners are shown in the drawings, in which the same or similar reference signs always denote the same or similar elements or elements with the same or similar functions. The implementation manners described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0024] The following disclosure provides many different implementation manners or examples for implementing different solutions of the present utility model.

[0025] Referring to Figures 1 to 3 As shown, an obstacle-crossing wheelchair includes a chassis 1, a seat 2 and two crawler traveling mechanisms 3. The two crawler traveling mechanisms 3 are arranged at intervals on the chassis 1 to drive the chassis 1 to move. A lifting mechanism 4 is provided on the chassis 1. The seat 2 is located above the lifting mechanism 4 and is connected to the lifting mechanism 4. The lifting mechanism 4 drives the seat 2 to lift and lower.

[0026] A lifting mechanism 4 is provided on the chassis 1. Under the drive of the lifting mechanism 4, the height of the seat 2 can be adjusted. When the wheelchair is moving, the seat 2 can be in a low position to lower the center of gravity. Coupled with the adoption of the crawler traveling mechanism 3, obstacles can be crossed, and it is applicable to various scenarios. When the wheelchair is not moving, the height of the seat 2 can be increased to meet other needs such as dining and operating equipment, improving the use experience of the occupant.

[0027] In this embodiment, the lifting mechanism 4 includes an electric lifting column. The top end of the electric lifting column is the output end, and the output end of the electric lifting column is connected to the seat 2.

[0028] Preferably, the electric lifting column is a three-section electric lifting column, and the adjustable height range is relatively large. When the height of the seat 2 is not lifted, the seat 2 can maintain a lower position.

[0029] In this embodiment, the crawler travel mechanism 3 includes a crawler 31, a drive motor 32 fixed on the chassis 1, and a driven wheel 33 rotatably arranged on the chassis 1. A driving wheel 34 is provided on the drive motor 32. The crawler 31 is drivingly connected to the driving wheel 34 and the driven wheel 33. Driven by the driving wheel 34, the crawler 31 can move, thereby driving the chassis 1 to move. Moreover, by controlling the rotational speeds of the two drive motors 32, the two driving wheels 34 can have a differential speed to achieve the steering function.

[0030] Meanwhile, a support wheel 35 is also provided in the crawler travel mechanism 3. The support wheel 35 is located between the driving wheel 34 and the driven wheel 33. The support wheel 35 is rotatably arranged on the chassis 1. When the crawler 31 crosses an obstacle, the support wheel 35 can support the movement of the crawler 31.

[0031] In this embodiment, the driving wheel 34 and the driven wheel 33 in the crawler travel mechanism 3 are arranged at intervals along a first direction. The chassis 1 includes a first disc body 11 and a second disc body 12 connected in sequence along the first direction. The drive motor 32 is fixed on the first disc body 11. The first disc body 11 can be adjusted in position along the first direction, so as to control the distance between the driving wheel 34 and the driven wheel 33 and adjust the tension of the crawler 1 belt 31.

[0032] Specifically, a kidney-shaped hole extending along the first direction is provided on the first disc body 11, and a through hole is provided on the second disc body 12. Bolts are used to pass through the kidney-shaped hole and the through hole to fix the first disc body 11 and the second disc body 12 together.

[0033] In this embodiment, a bellows cover 5 is provided between the chassis 1 and the seat 2. Two inverted U-shaped brackets 6 are arranged at intervals in the horizontal direction on the chassis 1. The lifting mechanism 4 is located between the two brackets 6. A support plate 7 is mounted on the two brackets 6. The bellows cover 5 connects the support plate 7 and the seat 2. The lifting mechanism 4 is arranged through the bellows cover 5;

[0034] In this way, the part of the electric lifting column below the support plate 7 is communicated with the atmosphere, which is convenient for the heat dissipation of the electric lifting column. And the electric lifting column is multi-section, and the connection between the sections is basically above the support plate 7. Therefore, the bellows cover 5 can protect these connections and block the intrusion of dust and water.

[0035] In this embodiment, a pedal 8 is provided on the chassis 1 for the feet of the rider to place.

[0036] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand 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 claims and their equivalents.

Claims

1. An over-obstacle wheelchair, comprising a chassis, a seat and two crawler running mechanisms, the two crawler running mechanisms are arranged at intervals on the chassis to drive the chassis to move, and is characterized in that, A lifting mechanism is provided on the chassis. The seat is located above the lifting mechanism and connected to the lifting mechanism, and the lifting mechanism drives the seat to lift and lower.

2. The obstacle-crossing wheelchair according to claim 1, wherein, The lifting mechanism includes an electric lifting column. The top end of the electric lifting column is the output end, and the output end of the electric lifting column is connected to the seat.

3. The obstacle-crossing wheelchair according to claim 2, wherein The electric lifting column is a three-section electric lifting column.

4. The obstacle-crossing wheelchair according to claim 1, wherein, A bellows is provided between the chassis and the seat, and the lifting mechanism is disposed through the bellows.

5. The obstacle-crossing wheelchair according to claim 4, wherein, Two inverted U-shaped brackets are arranged at intervals in the horizontal direction on the chassis. The lifting mechanism is located between the two brackets, and a support plate is mounted on the two brackets. The bellows connects the support plate and the seat.

6. The obstacle-crossing wheelchair according to claim 1, characterized in that The crawler travel mechanism includes a crawler, a drive motor fixed on the chassis, and a driven wheel rotatably provided on the chassis. A driving wheel is provided on the drive motor, and the crawler is drivingly connected to the driving wheel and the driven wheel.

7. The obstacle-crossing wheelchair according to claim 6, wherein The crawler travel mechanism includes a support wheel. The support wheel is located between the driving wheel and the driven wheel, and the support wheel is rotatably provided on the chassis.

8. The obstacle-crossing wheelchair according to claim 6, wherein, The driving wheel and the driven wheel in the crawler travel mechanism are arranged at intervals in a first direction. The chassis includes a first disk body and a second disk body sequentially connected in the first direction. The drive motor is fixed on the first disk body, and the first disk body can be adjusted in position in the first direction.

9. The obstacle-crossing wheelchair according to claim 1, wherein, A pedal is provided on the chassis.

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