CN211023598U

CN211023598U - Brake mechanism for electric wheelchair

Info

Publication number: CN211023598U
Application number: CN201921724887.3U
Authority: CN
Inventors: 范志清
Original assignee: Kunshan Aoshida Electric Technology Co ltd
Current assignee: Kunshan Aoshida Electric Technology Co ltd
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-07-17
Anticipated expiration: 2029-10-15

Abstract

The utility model discloses an electronic brake mechanism for wheelchair, including electronic wheelchair main part, the symmetry is provided with the handrail board in the electronic wheelchair main part, the bottom of handrail board one side is rotated and is connected with the main shaft, the fixed cup joint of outer wall of main shaft has first ratchet, one side of first ratchet is provided with the second ratchet, and the inner wall of second ratchet cup joints with the main shaft is fixed, the top of first ratchet is provided with first pawl, one side of second ratchet is provided with the second pawl, the top of first pawl is provided with the head rod, one side of second pawl is provided with the second connecting rod, first pawl and second pawl all are provided with coupling mechanism. The utility model discloses utilize the mode that sets up of first ratchet, first ratchet is fixed on the main shaft, uses through the cooperation of first pawl, can brake in the direction that the electronic wheelchair moved back, can make the electronic wheelchair can only advance and can not retreat, moves back when avoiding the electronic wheelchair climbing, strengthens the security performance of electronic wheelchair.

Description

Brake mechanism for electric wheelchair

Technical Field

The utility model relates to a brake mechanism field, in particular to brake mechanism for electronic wheelchair.

Background

The electric wheelchair is also called an electric wheelchair vehicle, and is a tool for special people such as the disabled, the weak in the old, the medical clinical rehabilitation patients and the like, the electric wheelchair becomes an indispensable tool for the old, the disabled and the like with inconvenient actions, the electric wheelchair has wide application objects, the wheelchair is often braked in the using process, the brake of the wheelchair motor is usually a brake pad or an electromagnetic brake, but the brake device is often locked to brake when working, and the wheelchair cannot move forwards or backwards in one direction to brake.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electronic brake mechanism for wheelchair to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an electronic brake mechanism for wheelchair, includes electronic wheelchair main part, the symmetry is provided with the handrail board in the electronic wheelchair main part, the bottom of handrail board one side is rotated and is connected with the main shaft, the fixed cover of outer wall of main shaft has been cup jointed first ratchet, one side of first ratchet is provided with the second ratchet, just the inner wall and the fixed cup joint of main shaft of second ratchet, the top of first ratchet is provided with first pawl, one side of second ratchet is provided with the second pawl, the top of first pawl is provided with the head rod, one side of second pawl is provided with the second connecting rod, the top of first pawl and one side of second pawl all are provided with coupling mechanism.

Preferably, the connecting mechanism comprises two connecting plates and a sliding rod, the bottom of each connecting plate is fixedly connected with the first pawl, the middle of one side, opposite to the two connecting plates, of each connecting plate is rotatably connected with the corresponding sliding rod, and the outer wall of each sliding rod is rotatably connected with the corresponding first connecting rod.

Preferably, one side of the second pawl is rotatably connected with the second connecting rod through a connecting mechanism.

Preferably, one side of the handrail plate is fixedly connected with a first rotating rod, the outer wall of the first rotating rod is rotatably connected with a first pawl, one side of the handrail plate is fixedly connected with a second rotating rod, and the outer wall of the second rotating rod is rotatably connected with a second pawl.

Preferably, one side of the handrail plate is provided with a first limiting rod and a second limiting rod, one end of the first limiting rod is fixedly connected with the first connecting rod, and one end of the second limiting rod is fixedly connected with the second connecting rod.

Preferably, the two handrail plates are symmetrically provided with sliding holes, one side of the inner wall of each sliding hole is symmetrically provided with connecting holes, one side of the bottom of the inner wall of one connecting hole is provided with a limiting hole, the other side of the top of the inner wall of the other connecting hole is provided with a positioning hole, the inner cavity of one limiting hole is in sliding sleeve joint with the first limiting rod, and the inner cavity of the other limiting hole is in sliding sleeve joint with the second limiting rod.

The utility model discloses a technological effect and advantage:

1. the utility model utilizes the arrangement mode of the first ratchet wheel, the first ratchet wheel is fixed on the main shaft, and the first pawl is used in cooperation, so that the electric wheelchair can be braked in the backward direction, the electric wheelchair can only move forward but not move backward, the backward movement of the electric wheelchair during climbing is avoided, and the safety performance of the electric wheelchair is enhanced;

2. the utility model discloses utilize the mode that sets up of second ratchet, the second ratchet is fixed on the main shaft, and cooperation through the second pawl is used and can be to the electronic wheelchair braking on advancing direction, when first ratchet and second ratchet brake simultaneously, can brake around the electronic wheelchair to make the electronic wheelchair braking, and first gag lever post and second gag lever post can change first ratchet and second ratchet operating condition, and the person of facilitating the use adjusts.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic side view of the handrail plate of the present invention.

Fig. 3 is a schematic view of the front internal structure of the handrail plate of the present invention.

Fig. 4 is an enlarged schematic structural view of a portion a in fig. 1 according to the present invention.

Fig. 5 is an enlarged schematic view of the structure at B in fig. 3 according to the present invention.

In the figure: 1. an electric wheelchair main body; 2. a handrail plate; 3. a main shaft; 4. a first ratchet wheel; 5. a second ratchet wheel; 6. a first pawl; 7. a second pawl; 8. a first connecting rod; 9. a second connecting rod; 10. a connecting mechanism; 101. a connecting plate; 102. a slide bar; 11. a first rotating lever; 12. a second rotating rod; 13. a first limit rod; 14. a second limiting rod; 15. a slide hole; 16. connecting holes; 17. a limiting hole; 18. and (7) positioning the holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a brake mechanism for an electric wheelchair, as shown in figures 1-5, which comprises an electric wheelchair main body 1, a handrail plate 2 is symmetrically arranged on the electric wheelchair main body 1, a main shaft 3 is rotationally connected with the bottom of one side of the handrail plate 2, a first ratchet wheel 4 is fixedly sleeved on the outer wall of the main shaft 3, a second ratchet wheel 5 is arranged on one side of the first ratchet wheel 4, the first ratchet wheel 4 and the second ratchet wheel 5 are positioned between the armrest plate 2 and the wheels, the inner wall of the second ratchet wheel 5 is fixedly sleeved with the spindle 3, a first pawl 6 is arranged at the top of the first ratchet wheel 4, a second pawl 7 is arranged on one side of the second ratchet wheel 5, the first pawl 6 and the second pawl 7 can elastically deform to a certain degree, a first connecting rod 8 is arranged at the top of the first pawl 6, a second connecting rod 9 is arranged on one side of the second pawl 7, and connecting mechanisms 10 are arranged at the top of the first pawl 6 and one side of the second pawl 7;

the connecting mechanism 10 comprises two connecting plates 101 and a sliding rod 102, the bottom of each connecting plate 101 is fixedly connected with the first pawl 6, the middle of one side, opposite to the two connecting plates 101, of each connecting plate is rotatably connected with the corresponding sliding rod 102, the outer wall of each sliding rod 102 is rotatably connected with the corresponding first connecting rod 8, one side of each second pawl 7 is rotatably connected with the corresponding second connecting rod 9 through the corresponding connecting mechanism 10, and the corresponding connecting mechanism 10 can facilitate the first connecting rods 8 and the corresponding second connecting rods 9 to change the positions of the first pawls 6 and the corresponding second pawls 7;

one side fixedly connected with first bull stick 11 of handrail board 2, the outer wall and the first pawl 6 of first bull stick 11 rotate to be connected, one side fixedly connected with second bull stick 12 of handrail board 2, the outer wall and the second pawl 7 of second bull stick 12 rotate to be connected, one side of handrail board 2 is provided with first gag lever post 13 and second gag lever post 14, the one end and the 8 fixed connection of head rod of first gag lever post 13, the one end and the 9 fixed connection of second connecting rod of second gag lever post 14, first gag lever post 13 and second gag lever post 14 can the person of facilitating the use change the operating condition of first ratchet 4 and second ratchet 5.

The two handrail plates 2 are symmetrically provided with sliding holes 15, one side of the inner wall of each sliding hole 15 is symmetrically provided with connecting holes 16, one side of the bottom of the inner wall of one connecting hole 16 is provided with a limiting hole 17, one side of the top of the inner wall of the other connecting hole 16 is provided with a positioning hole 18, the inner cavity of one limiting hole 17 is in sliding sleeve joint with the first limiting rod 13, the inner cavity of the other limiting hole 17 is in sliding sleeve joint with the second limiting rod 14, when the first limiting rod 13 and the second limiting rod 14 are located in the positioning holes 18, the first pawl 6 and the second pawl 7 respectively provide elastic force for the first limiting rod 13 and the second limiting rod 14, so that the first limiting rod 13 and the second limiting rod 14 are clamped in the positioning holes 18, and the positioning holes 18 limit the positions of the first limiting rod 13 and the second limiting rod 14.

This practical theory of operation: when the electric wheelchair ascends a slope, the electric wheelchair only needs to move forwards and not move backwards, the first limiting rod 13 is lifted, then the first limiting rod 13 slides in the inner cavity of the connecting hole 16, then the first limiting rod 13 is pressed down, the first limiting rod 13 slides in the inner cavity of the sliding hole 15, then the first limiting rod 13 slides, the first limiting rod 13 is positioned in the duty of the positioning hole 18, at the moment, the first pawl 6 is clamped between two adjacent clamping teeth of the first ratchet wheel 4, and under the matching of the first pawl 6 and the first ratchet wheel 4, the electric wheelchair only moves forwards and does not move backwards;

when the electric wheelchair needs to be stationary, the second limiting rod 14 is slid to enable the second limiting rod 14 to slide into the positioning hole 18 from the limiting hole 17, at the moment, the second pawl 7 is clamped between two adjacent clamping teeth of the second ratchet wheel 5, and the second pawl 7 and the second ratchet wheel 5 brake the electric wheelchair in the advancing direction, so that the electric wheelchair is stationary.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides an electronic wheelchair is with brake mechanism, includes electronic wheelchair main part (1), its characterized in that: the electric wheelchair comprises an electric wheelchair body (1), wherein handrail plates (2) are symmetrically arranged on the electric wheelchair body (1), a main shaft (3) is connected to the bottom of one side of each handrail plate (2) in a rotating mode, a first ratchet wheel (4) is fixedly sleeved on the outer wall of the main shaft (3), a second ratchet wheel (5) is arranged on one side of the first ratchet wheel (4), the inner wall of the second ratchet wheel (5) is fixedly sleeved with the main shaft (3), a first pawl (6) is arranged on the top of the first ratchet wheel (4), a second pawl (7) is arranged on one side of the second ratchet wheel (5), a first connecting rod (8) is arranged on the top of the first pawl (6), a second connecting rod (9) is arranged on one side of the second pawl (7), and a connecting mechanism (10) is arranged on the top of the first pawl (6) and one side of the second pawl (7.

2. The brake mechanism for an electric wheelchair according to claim 1, wherein: the connecting mechanism (10) comprises two connecting plates (101) and a sliding rod (102), the bottom of each connecting plate (101) is fixedly connected with the first pawl (6), the middle of one side, opposite to the two connecting plates (101), of each connecting plate is rotatably connected with the corresponding sliding rod (102), and the outer wall of each sliding rod (102) is rotatably connected with the corresponding first connecting rod (8).

3. The brake mechanism for an electric wheelchair according to claim 1, wherein: one side of the second pawl (7) is rotatably connected with a second connecting rod (9) through a connecting mechanism (10).

4. The brake mechanism for an electric wheelchair according to claim 1, wherein: the handle is characterized in that a first rotating rod (11) is fixedly connected to one side of the armrest plate (2), the outer wall of the first rotating rod (11) is rotatably connected with a first pawl (6), a second rotating rod (12) is fixedly connected to one side of the armrest plate (2), and the outer wall of the second rotating rod (12) is rotatably connected with a second pawl (7).

5. The brake mechanism for an electric wheelchair according to claim 1, wherein: one side of handrail board (2) is provided with first gag lever post (13) and second gag lever post (14), the one end and head rod (8) fixed connection of first gag lever post (13), the one end and second connecting rod (9) fixed connection of second gag lever post (14).

6. The brake mechanism for an electric wheelchair according to claim 1, wherein: two slide holes (15) have all been seted up to handrail board (2) symmetry, connecting hole (16) have been seted up to one side symmetry of slide hole (15) inner wall, one of them spacing hole (17) have been seted up to one side of connecting hole (16) inner wall bottom, and wherein another locating hole (18) have been seted up to one side at connecting hole (16) inner wall top, one of them the inner chamber and the sliding sleeve joint of first gag lever post (13) of spacing hole (17), another of them the inner chamber and the sliding sleeve joint of second gag lever post (14) of spacing hole (17).