Base structure of electric wheelchair

Abstract

The utility model discloses an electric wheelchair base structure, and particularly relates to the field of wheelchairs, the electric wheelchair base structure comprises a wheelchair chassis and a wheelchair walking system arranged on the wheelchair chassis, a supporting plate is fixedly erected on the wheelchair chassis, a wheelchair bottom plate is arranged above the supporting plate, and damping springs are arranged on the supporting plate and the wheelchair bottom plate. The bottom of the supporting plate is fixedly connected with a damper, the bottom of the wheelchair bottom plate is fixedly connected with a first rotating seat, the damping end of the damper movably penetrates through the supporting plate and is rotationally connected to the first rotating seat, a sliding supporting piece is arranged on the wheelchair bottom plate, and a positioning piece is arranged on the sliding supporting piece. The damping end of the damper and the first rotating base are each provided with a positioning hole used for insertion of the positioning piece, the positioning piece comprises an insertion rod, a pull rod, a pair of limiting rings and a reset spring, and the other end of the insertion rod is movably connected with the positioning hole in an inserted mode. The electric wheelchair base solves the technical problem that the electric wheelchair base is used as a supporting piece only, and certain functionality is lost.

Description

Technical Field

[0001] The utility model relates to the technical field of wheelchairs, and more specifically, to a base structure of an electric wheelchair. Background Art

[0002] Electric wheelchairs are upgraded from traditional manual wheelchairs by adding high-performance power drive devices, intelligent control devices, batteries and other components. Equipped with a manually operated intelligent controller, the new generation of intelligent wheelchairs can drive the wheelchair to move forward, backward, turn, stand up, lie flat, and other functions. It is a high-tech product that combines modern precision machinery, intelligent numerical control, engineering mechanics and other fields.

[0003] At present, the base of an electric wheelchair is mainly used as a supporting structure for a seat system, a walking system, etc. In actual use, it loses certain functionality and is not practical enough because it is only used as a supporting member. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides an electric wheelchair base structure. The technical problem to be solved by the utility model is that the electric wheelchair base loses certain functionality when used only as a supporting member.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electric wheelchair base structure, comprising a wheelchair chassis and a wheelchair walking system arranged on the wheelchair chassis, a support plate is fixedly mounted on the wheelchair chassis, a wheelchair bottom plate is arranged above the support plate, shock-absorbing springs are arranged on the support plate and the wheelchair bottom plate, a damper is fixedly connected to the bottom of the support plate, a rotating seat is fixedly connected to the bottom of the wheelchair bottom plate, the damping end of the damper movably passes through the support plate and is rotatably connected to the rotating seat, a sliding support piece is arranged on the wheelchair bottom plate, a positioning piece is arranged on the sliding support piece, and a positioning hole for inserting the positioning piece is arranged on the damping end of the damper and the rotating seat.

[0006] In a preferred embodiment, columns are fixedly connected to the corners of the bottom of the support plate, one end of the column facing away from the support plate is fixedly connected to the wheelchair chassis, and a fixing plate is fixedly connected to the top of the wheelchair bottom plate.

[0007] In a preferred embodiment, both ends of the shock-absorbing spring are fixedly connected with spring seats, and the shock-absorbing spring is fixedly connected to the supporting plate and the wheelchair bottom plate respectively through the corresponding spring seats.

[0008] In a preferred embodiment, the sliding support member includes a support block fixedly connected to the bottom of the wheelchair base plate and a sliding seat slidably connected to the support block.

[0009] In a preferred embodiment, the positioning member includes an insertion rod movably passing through the sliding seat, a pull rod arranged at one end of the insertion rod, a pair of limiting rings fixedly connected to the insertion rod and a return spring sleeved on the insertion rod, and the other end of the insertion rod is movably connected to the positioning hole.

[0010] In a preferred embodiment, one end of the insertion rod is fixedly connected to a second rotating seat, and the pull rod is rotatably connected to the second rotating seat.

[0011] In a preferred embodiment, a retaining groove for inserting the insertion rod is opened on the side surface of the rotating seat.

[0012] Technical effects and advantages of the utility model:

[0013] 1. The utility model provides an electric wheelchair base structure, by arranging shock-absorbing springs and dampers on a support plate and a wheelchair bottom plate, the combination of the shock-absorbing springs and the dampers can effectively filter the vibration of the road surface, so that the seat system assembled on the wheelchair bottom plate can have a shock-absorbing function, so that it can be more stable when realizing electric walking.

[0014] 2. The utility model provides an electric wheelchair base structure. Since the shock-absorbing spring and the damper are arranged in a split type, by flexibly inserting the positioning piece into the positioning hole parallel to the damper and the rotating seat, on the one hand, the wheelchair base can provide shock-absorbing support for the seat system, and on the other hand, the wheelchair base can provide elastic support for the seat, that is, giving the seat system a swinging riding effect, with the purpose of flexibly switching the support effect, thereby improving the functional characteristics of the base structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 For the utility model Figure 1 Schematic diagram of the structure without the wheelchair base and wheelchair travel system.

[0018] Figure 3 It is a schematic structural diagram of the damper and the rotating seat of the utility model.

[0019] Figure 4It is a structural schematic diagram of the positioning member of the utility model.

[0020] The accompanying drawings are marked as follows: 1. wheelchair chassis; 2. wheelchair walking system; 3. support plate; 4. shock-absorbing spring; 5. wheelchair bottom plate; 6. damper; 7. rotating seat one; 8. support block; 9. slide seat; 10. positioning piece; 101. plug rod; 102. pull rod; 103. limit ring; 104. reset spring; 11. positioning hole; 12. column; 13. spring seat; 14. fixing plate; 15. retention groove; 16. rotating seat two. DETAILED DESCRIPTION

[0021] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Combined with reference Figure 1-Figure 4 The utility model provides an electric wheelchair base structure, including a wheelchair chassis 1 and a wheelchair walking system 2 arranged on the wheelchair chassis 1. The wheelchair walking system 2 is the walking driving part of the electric wheelchair, which is a prior art and will not be described in detail here. A support plate 3 is fixedly mounted on the wheelchair chassis 1, a wheelchair bottom plate 5 is arranged above the support plate 3, a shock absorbing spring 4 is arranged on the support plate 3 and the wheelchair bottom plate 5, a damper 6 is fixedly connected to the bottom of the support plate 3, and considering the length of the damper 6, it can be extended to the wheelchair chassis 1, and a rotating seat 7 is fixedly connected to the bottom of the wheelchair bottom plate 5. The damper The damping end of 6 movably passes through the support plate 3 and is rotatably connected to the rotating seat 7. One end of the damper 6 can be rotatably connected to the rotating seat 7 through a positioning pin. The damper 6 can be used in conjunction with the shock-absorbing spring 4 to provide shock-absorbing support for the wheelchair base plate 5. In this way, when the seat system is set on the wheelchair base plate 5, the impact and vibration of the road surface are filtered, so that the walking of the entire base structure can be more stable. A sliding support is provided on the wheelchair base plate 5, and a positioning member 10 is provided on the sliding support. The damping end of the damper 6 and the rotating seat 7 are both provided with positioning holes 11 for inserting the positioning member 10.

[0023] The corners at the bottom of the support plate 3 are fixedly connected with columns 12, and the ends of the columns 12 facing away from the support plate 3 are fixedly connected to the wheelchair chassis 1. The columns 12 are used to support and erect the support plate 3. The top of the wheelchair base plate 5 is fixedly connected with a fixing plate 14, and the fixing plate 14 is provided with mounting holes, which can be used in conjunction with bolts to assemble the seat system.

[0024] Both ends of the shock-absorbing spring 4 are fixedly connected with spring seats 13. The shock-absorbing spring 4 is fixedly connected to the support plate 3 and the wheelchair base plate 5 respectively through the corresponding spring seats 13. By stabilizing the position of the shock-absorbing spring 4 on the support plate 3 and the wheelchair base plate 5, the shock-absorbing spring 4 can filter the vibration of the road on the one hand, and provide spring support for the wheelchair base plate 5 on the other hand. The elastic support can provide an elastic swinging support effect for the wheelchair base plate 5, that is, provide a swingable riding effect for the seat system.

[0025] The sliding support member includes a support block 8 fixedly connected to the bottom of the wheelchair base plate 5 and a slide seat 9 slidably connected to the support block 8. The slide seat 9 is slidably arranged on the support block 8, so as to provide a lateral adjustment effect for the positioning member 10.

[0026] The positioning member 10 includes an insertion rod 101 movably passing through the sliding seat 9, a pulling rod 102 arranged at one end of the insertion rod 101, a pair of limiting rings 103 fixedly connected to the insertion rod 101, and a reset spring 104 sleeved on the insertion rod 101. The other end of the insertion rod 101 is movably connected to the positioning hole 11. The setting of the pair of limiting rings 103 can make the reset spring 104 close to the sliding seat 9 and a limiting ring 103 so as to compress the reset spring 104.

[0027] Specifically, when the damper 6 is needed to suppress the jumping of the shock absorbing spring 4, the insertion rod 101 is inserted into the positioning hole 11 on the rotating seat 7 and the damper 6. At this time, the positioning pin and the insertion rod 101 can prevent one end of the damper 6 from deflecting. In this way, when the entire base structure moves, the shock absorbing spring 4 can filter the vibration of the road surface, and the damper 6 can suppress the jumping of the shock absorbing spring 4.

[0028] In addition, when the shock-absorbing spring 4 is needed to provide swing support for the seat system, the pull rod 102 can be pulled to release the insertion rod 101 in the positioning hole 11, so that the positioning pin can provide a single-point support for the damper 6 and the rotating seat 7 to rotate. By utilizing the elastic effect of the shock-absorbing spring 4, the wheelchair base plate 5 can swing back and forth above the support plate 3 based on the connection of the positioning pin, thereby providing the passenger with a sitting and lying shaking function, thereby satisfying the improvement of the support functionality.

[0029] One end of the insertion rod 101 is fixedly connected to the rotating seat 16, and the pull rod 102 is rotatably connected to the rotating seat 16. The rotating seat 16 and the pull rod 102 can be rotatably connected through a positioning pin, and the rotatably arranged pull rod 102 can be folded and stored.

[0030] A retaining groove 15 for inserting the insertion rod 101 is provided on the side of the rotating seat 7. The retaining groove 15 is set so that when the insertion rod 101 needs to be disengaged from the positioning hole 11, the pull rod 102 is pulled. At this time, the return spring 104 is in a compressed state. By utilizing the sliding property of the slide seat 9, when the pull rod 102 is disengaged from the positioning hole 11, it can be moved horizontally to one side until the insertion rod 101 corresponds to the retaining groove 15 and is inserted, thereby limiting the idle position of the insertion rod 101.

Claims

1. An electric wheelchair base structure, comprising a wheelchair chassis (1) and a wheelchair travel system (2) arranged on the wheelchair chassis (1), characterized in that: A support plate (3) is fixedly mounted on the wheelchair chassis (1), a wheelchair base plate (5) is arranged above the support plate (3), shock-absorbing springs (4) are arranged on the support plate (3) and the wheelchair base plate (5), a damper (6) is fixedly connected to the bottom of the support plate (3), a rotating seat (7) is fixedly connected to the bottom of the wheelchair base plate (5), the damping end of the damper (6) movably passes through the support plate (3) and is rotatably connected to the rotating seat (7), a sliding support member is arranged on the wheelchair base plate (5), a positioning member (10) is arranged on the sliding support member, and a positioning hole (11) for inserting the positioning member (10) is arranged on the damping end of the damper (6) and the rotating seat (7).

2. The electric wheelchair base structure according to claim 1, characterized in that: The corners at the bottom of the support plate (3) are fixedly connected to columns (12), one end of the column (12) facing away from the support plate (3) is fixedly connected to the wheelchair chassis (1), and the top of the wheelchair bottom plate (5) is fixedly connected to a fixing plate (14).

3. The electric wheelchair base structure according to claim 1, characterized in that: Both ends of the shock absorbing spring (4) are fixedly connected to spring seats (13), and the shock absorbing spring (4) is respectively fixedly connected to the support plate (3) and the wheelchair bottom plate (5) through the corresponding spring seats (13).

4. The electric wheelchair base structure according to claim 1, characterized in that: The sliding support member comprises a support block (8) fixedly connected to the bottom of the wheelchair base plate (5) and a sliding seat (9) slidably connected to the support block (8).

5. The electric wheelchair base structure according to claim 4, characterized in that: The positioning member (10) comprises an insertion rod (101) movably passing through the sliding seat (9), a pulling rod (102) arranged at one end of the insertion rod (101), a pair of limiting rings (103) fixedly connected to the insertion rod (101) and a return spring (104) sleeved on the insertion rod (101); the other end of the insertion rod (101) is movably plugged into the positioning hole (11).

6. The electric wheelchair base structure according to claim 5, characterized in that: One end of the insertion rod (101) is fixedly connected to a second rotating seat (16), and the pull rod (102) is rotatably connected to the second rotating seat (16).

7. The electric wheelchair base structure according to claim 5, characterized in that: A retaining groove (15) for inserting the inserting rod (101) is provided on the side surface of the rotating seat (7).

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