WO2022016772A1

WO2022016772A1 - Electric wheelchair having dual-folding function

Info

Publication number: WO2022016772A1
Application number: PCT/CN2020/134133
Authority: WO
Inventors: 朱剑
Original assignee: 常熟市平方轮椅有限公司
Priority date: 2020-07-24
Filing date: 2020-12-05
Publication date: 2022-01-27
Also published as: CN111759603A

Abstract

An electric wheelchair having a dual-folding function, relating to the technical field of articles for daily use, and comprising: a left frame (1) and a right frame (2); a left footrest (11), a left front wheel (12), and a left rear wheel (13) are provided on the lower portion of the left frame (1), a left armrest (14) is provided on the upper portion, and a left push handle (15) is provided on the upper portion of the rear end; a right footrest (21), a right front wheel (22), and a right rear wheel (23) are provided on the lower end of the right frame (2), a right armrest (24) is provided on the upper portion, and a right push handle (25) is provided on the upper portion of the rear end; and a chair seat support cloth (3) and a chair back support cloth (4). An electrical controller (10) is provided on the right frame (2); a manual operation controller (20) is provided on the front end of the right armrest (24); a frame transverse folding mechanism (5) is connected between the left frame (1) and the right frame (2); the electrical controller (10) is connected to a battery (6); a left push handle folding mechanism (7) is provided between the rear end of the upper portion of the left frame (1) and the left push handle (15); a right push handle folding mechanism (8) is provided between the rear end of the upper portion of the right frame (2) and the right push handle (25); the battery (6) is provided on the frame transverse folding mechanism (5). According to the electric wheelchair, the transverse folding size is reduced, storage requirements under the condition of restricted space are satisfied, and no interference is generated with respect to the folding or unfolding of the left and right frames (1, 2).

Description

Electric wheelchair with bi-folding function

technical field

The invention belongs to the technical field of daily necessities, and in particular relates to an electric wheelchair with a double-folding function.

Background technique

Electric wheelchair, also known as "electric wheelchair", is a means of transportation for special groups such as the disabled, the elderly and the infirm, and those who seek medical treatment for structural illnesses and tend to recover. A large number of technical information related to electric wheelchairs can be found in the published Chinese patent documents, such as CN2745544Y (multifunctional electric wheelchair), CN201379725Y (obstacle avoidance electric wheelchair), CN101589979B (a multifunctional electric wheelchair) Electric wheelchair), CN201684098U (electric wheelchair), CN102764185B (electric wheelchair), CN202682214U (electric wheelchair), CN103202748A (anti-overturn electric wheelchair), CN201379725Y (obstacle avoidance electric wheelchair) and CN302198767U (four-wheel electric wheelchair) car), etc.

In order to reduce the space occupied by the electric wheelchair in the standby state, the folding electric wheelchair is very popular among people including the above groups, and technical information related to the folding electric wheelchair can also be found in the published Chinese patent documents. , such as CN204521270U (a folding wheelchair), CN100553599C (seat folding mechanism), CN107468438A (folding electric wheelchair) and CN102688124B (linkage control flat lay electric wheelchair), and so on.

A typical example is the "wheelchair folding mechanism" recommended by CN201719459U. The wheelchair with this structure can make the left and right sides of the same structure and symmetrical when folded because the backrest, the seat back, and the seat cushion, that is, the seat, are made of cloths of various materials. The frame is folded towards each other to form a flat shape, which can significantly reduce the space in the storage state. However, since a pair of pushers (such as the left pusher and When you store upright, you are picky about the height of the collection space. When you store it in a lying state, you will be picky about the width or depth (depth) of the collection space, which is very embarrassing for collection in a stretched space. In addition, since this patent is aimed at a non-electric wheelchair and is a structure pushed by the escort, it does not give technical advice on how to use electric power and how to make the battery and other components not affect the folding when folded. Based on the aforementioned shortcomings of CN201719459U, it is necessary to make reasonable improvements, and the technical solutions to be introduced below are generated under this background.

technical problem

The present application aims to solve the problem that the electric wheelchair is not easy to fold in the prior art, and at the same time reduces the space occupied by the electric wheelchair in the standby state.

technical solutions

The task of the present invention is to provide a method that helps to fold a pair of frames toward each other in a non-use state, so as to significantly reduce the lateral folding size and reduce the occupation of space, and to facilitate the folding of the push handle as needed during storage. An electric wheelchair with double-folding function that reduces the height dimension of a pair of frames to meet the storage requirements under the condition of limited space, and is beneficial to reasonably arrange the position of the battery to avoid interference with the folding or unfolding of the frames vehicle.

The task of the present invention is accomplished in this way, an electric wheelchair with double-folding function, including a left frame and a right frame, the left frame and the right frame correspond to each other left and right, at the lower part of the left frame A left footboard, a left front wheel and a left rear wheel are arranged in sequence from front to back, and a left armrest is arranged on the upper part of the left frame, and a left push handle is arranged on the upper part of the rear end of the left frame. The lower end of the frame is sequentially provided with a right footboard, a right front wheel and a right rear wheel from front to back, and a right handrail is arranged on the upper part of the rear end of the right frame, and a right pusher is arranged on the upper part of the rear end of the right frame A seat support cloth and a seat back support cloth, the left edge part of the seat support cloth is fixed with the upper part of the left frame, and the right edge part of the seat support cloth is fixed with the upper part of the right frame, and the seat back support cloth The upper part of the left edge part is fixed on the left push handle, and the lower part of the left edge part is fixed with the rear end of the left frame; the upper part of the right edge part of the seat back support is fixed on the right push handle, and the right edge The lower part of the part is fixed with the rear end of the right frame; an electric controller and a manual operation controller, the electric controller is arranged on the right frame, the manual operation controller is arranged at the front end of the right armrest, and the The manual operation controller is controlled by the electric controller by remote control; a frame transverse folding mechanism for making the left frame and the right frame close or repel each other, the frame transverse folding mechanism is connected to the Between the left frame and the right frame; a battery, the electric controller is electrically connected to the battery; it is characterized in that a left push handle is arranged between the upper rear end of the left frame and the left push handle In the folding mechanism, a right push handle folding mechanism is arranged between the upper rear end of the right frame and the right push handle, and the battery is arranged on the lateral folding mechanism of the frame.

In a specific embodiment of the present invention, the left frame has a left frame lower cross tube and a left frame upper cross tube, and the front end of the left frame lower cross tube and the front end of the left frame upper cross tube They are connected by the front transition longitudinal tube of the left frame, and the rear end of the lower horizontal tube of the left frame and the rear end of the upper horizontal tube of the left frame are connected by the rear transition tube of the left frame; the right frame has A right frame lower transverse tube and a right frame upper transverse tube, the front end of the right frame lower transverse tube and the front end of the right frame upper transverse tube are connected by the right frame front transition longitudinal tube, and the right frame lower The rear end of the horizontal tube and the rear end of the upper horizontal tube of the right frame are connected by the right frame buckle transition tube; the front end of the lower horizontal tube of the left frame is folded down and unfolded with a left footboard fixed folding arm. The front end of the lower horizontal tube of the right frame is folded downward with a right footboard fixed folding arm, and the rear end of the upper horizontal tube of the left frame is folded upward with a left push handle connecting tube. A right push handle connecting pipe is folded upward from the rear end of the upper horizontal pipe; the left footboard is adjusted up and down on the fixed folding arm of the left footboard, and the left front wheel is arranged on the lower horizontal frame of the left frame. The front end of the tube, and the left rear wheel is arranged at the junction of the lower horizontal tube of the left frame and the lower end of the rear transition tube of the left frame, and is equipped on the side of the left rear wheel facing the right rear wheel. There is a left rear wheel drive motor, the left armrest has a left armrest support tube, the rear end of the left armrest support tube is fixed with the front side of the left push handle connecting tube, and the middle part of the left armrest support tube is supported by the left The pipe is fixed with the upper horizontal pipe of the left frame, and the left push handle corresponds to the upper part of the left push handle connecting pipe; The right front wheel is arranged at the front end of the lower cross tube of the right frame, and the right rear wheel is arranged at the junction of the lower cross tube of the right frame and the lower end of the transition tube of the right frame buckle, and the right The side of the rear wheel facing the left rear wheel is equipped with a right rear wheel drive motor, the right armrest has a right armrest support tube, the rear end of the right armrest support tube and the front side of the right push handle connection tube and the middle part of the right armrest support pipe is fixed with the upper horizontal pipe of the right frame through the right support pipe, the right push handle corresponds to the upper part of the right push handle connecting pipe; the left rear wheel drive motor and the right The rear wheel drive motor is electrically connected with the electrical controller; the left edge of the seat support is fixed to the upper horizontal tube of the left frame, and the right edge of the seat support is connected to the right frame. The horizontal tube is fixed; the lower part of the left edge part of the seat back support is fixed with the left push handle connection pipe, and the lower part of the right edge part of the seat back support cloth is fixed with the right push handle connection pipe, and the left push handle corresponds to The upper part of the left push handle connection pipe, and the right push handle corresponds to the upper part of the right push handle connection pipe; the frame transverse folding mechanism is connected to the lower transverse pipe of the left frame, the upper transverse pipe of the left frame and the right frame between the lower horizontal tube and the upper horizontal tube of the right frame; the battery is in the shape of a rectangular body; the left push handle folding mechanism is arranged between the upper part of the left push handle connecting pipe and the lower end of the left push handle the right push handle folding mechanism is arranged between the upper part of the right push handle connecting pipe and the lower end of the right push handle; the manual operation controller is arranged at the the front end of the right handrail support tube.

In another specific embodiment of the present invention, a locking pin latch matching tube is provided at the lower end of the right push handle; The structure of the left push handle folding mechanism is the same as the right push handle folding mechanism arranged between the upper part of the right push handle connecting pipe and the lower end of the right push handle, and the right push handle folding mechanism includes: The locking sleeve, the hinge plate, the locking pin of the right push handle, the locking pin actuating wrench and the hinge shaft, the lower end of the locking sleeve is fixed with the upper end of the connecting pipe of the right push handle, and the upper end of the locking sleeve protrudes out of the connecting pipe of the right push handle. On the upper end face, the locking sleeve forms a locking sleeve cavity, the side of the locking sleeve cavity facing the hinge plate forms an opening, and a pin hole is opened on the cavity bottom wall of the locking sleeve and at a position corresponding to the locking pin of the right push handle, The hinge plate hinge shaft is arranged at the lower part of the side of the locking sleeve facing the hinge plate, the lower end of the hinge plate is hinged on the hinge shaft, and the upper end of the hinge plate is fixed with the right push handle, and the right push plate locking pin is actuated toward the locking pin One end of the wrench is connected with the lower end of the locking pin actuating wrench after slidingly passing through the hinge plate, the middle part of the locking pin of the right push handle is slidably matched with the sleeve cavity of the matching tube of the locking pin latch, and the locking pin of the right push handle is facing the pin hole The locking pin actuating wrench corresponds to the rear side of the hinge plate and the upper end of the locking pin actuating wrench protrudes beyond the upper surface of the hinge plate.

In yet another specific embodiment of the present invention, an end of the right push handle locking pin facing the locking pin actuating wrench is provided with a lever for connecting the right push handle locking pin with the locking pin actuating wrench The locking pin of the right push handle defines a nut, and the end of the locking pin of the right push handle facing the pin hole is formed with a bolt having a diameter larger than the diameter of the locking pin of the right push handle, and the bolt is bolted into or withdrawn from the pin hole, A spring is sleeved in the middle of the locking pin and located in the sleeve cavity, one end of the spring is supported on the step of the latch head, and the other end of the spring is supported on the hinge plate.

In yet another specific embodiment of the present invention, a pair of hinge shaft fixing ears are formed at the lower end of the locking sleeve and on the side facing the hinge plate, and the hinge shaft is inserted through the pair of hinge shaft fixing ears. And the end of the hinge shaft is screwed with a hinge shaft limiting nut; a pair of hinge plate hinge ears extend from the lower end of the hinge plate, and the pair of hinge plate hinge ears are hinged at positions corresponding to a pair of hinge shaft fixing ears. The middle part of the shaft is hinged, and a shaft sleeve is sleeved on the hinge shaft and corresponding to the position between the hinge ears of a pair of hinge plates.

In still another embodiment of the present invention, the position of the upper tube of the connecting tube is pushed in the right to push the connecting pipe holder sleeve, and the lower end of the right push handle There is a right push handle plug sleeve embedded in the position.

In a more specific embodiment of the present invention, a left side tube is welded on the right side of the horizontal tube on the left frame, and a left edge fixing pressure plate of the seat support cloth is arranged above the left side tube. The left side of the horizontal tube on the right frame is welded with a right escutcheon, and above the right escutcheon is equipped with a right edge fixing pressure plate of the seat support cloth; the left edge of the seat support cloth is clamped in the seat support The left edge of the cloth is fixed between the pressure plate and the left tube, and the left edge fixed pressure plate of the seat support is fixed with the left tube by the seat support left edge fixing pressure plate screw, and the right edge of the seat support is clamped in The right edge of the seat support is fixed between the pressure plate and the right hosting, and the right edge of the seat support is fixed with the right edge of the seat support by the right edge of the seat support. The fixing pressure plate and the right hosting are fixed; Left-hosted as well as right-hosted connections.

In a further specific embodiment of the present invention, the frame transverse folding mechanism includes a first folding rod I, a second folding rod II, a third folding rod III, a fourth folding rod IV, a first link I, The second link II and the third link III, the left end of the first folding rod I is hinged with the left hinge seat I of the first folding rod through the first hinge pin I, and the left hinge seat I of the first folding rod is connected to the The right side of the lower cross tube of the left frame is fixed, the right end of the first folding rod I is fixed with the right hosting, and the middle part of the first folding rod I is hinged with the middle part of the second folding rod II through the second hinge pin shaft II. The second folding rod II is located at the front side of the first folding rod I and the left end of the second folding rod II is fixed with the left hoist, and the right end of the second folding rod II is connected to the second folding rod through the third hinge pin III The right hinge seat II is hinged, and the second folding rod right hinge seat II is fixed with the left side of the lower cross tube of the right frame, and the third folding rod III is located at the rear side of the first folding rod I and is connected with the first folding rod. I parallel, the left end of the third folding rod III is hinged with the lower end of the rear transition tube of the left frame, the right end of the third folding rod III is fixed with the right hosting, and the middle part of the third folding rod III is through the fourth hinge pin IV is hinged with the middle of the fourth folding rod IV, the fourth folding rod IV is located at the rear side of the third folding rod III and is parallel to the second folding rod II, and the left end of the fourth folding rod IV is connected to the left escrow. The right end is hinged with the left end of the third link III through the fifth hinge pin V, and the right end of the third link III is connected with the rear transition pipe of the right frame, and the first link I is hinged on the first link. Between the left end of the four-folding rod IV and the upper end of the rear transition tube of the left frame, the second link II is hinged between the right end of the third folding rod III and the upper end of the rear transition tube of the right frame; the battery is arranged in Between the left ends of the first folding rod I and the third folding rod III.

In yet another specific embodiment of the present invention, a left frame balance wheel rod is connected to the right side of the rear transition tube of the left frame, and a pair of left frame balance wheel rods are arranged at the rear end of the left frame balance wheel rod. An anti-backward left balance wheel; a right frame balance wheel rod is connected to the left side of the rear transition pipe of the right frame, and a pair of backward anti-tilt right balance wheels are arranged at the rear end of the right frame balance wheel rod.

In a further specific embodiment of the present invention, a pair of battery fixing strips, which are both spaced apart and parallel to each other, are fixed between the left ends of the first folding rod I and the third folding rod III, and the battery It is fixed between a pair of battery fixing slats; between the right ends of the second folding rod II and the fourth folding rod IV, a pair of folding rod connecting slats which are spaced apart and parallel to each other are fixed.

beneficial effect

The technical effect of the technical solution provided by the present invention is that: since the left and right frames are folded toward each other in the non-use state by the lateral folding mechanism of the frame, the lateral folding size can be significantly reduced, and the space occupation is reduced; The left and right push handle folding mechanisms are respectively set between the upper rear end of the frame and the left push handle and between the upper rear end of the right frame and the right push handle, so that the left and right frames can be lowered as required during storage. The size in the height direction meets the storage requirements when the space is limited; because the battery is arranged on the lateral folding mechanism of the frame, it will not interfere with the folding or unfolding of the left and right frames.

Description of drawings

FIG. 1 is a structural diagram of an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the right push handle folding mechanism shown in FIG. 1 .

FIG. 3 is a schematic view of FIG. 1 in a folded state.

FIG. 4 is an enlarged view of part A of FIG. 3 .

BEST MODE FOR CARRYING OUT THE INVENTION

In order to be able to understand the technical essence and beneficial effects of the present invention more clearly, the applicant will describe in detail below by way of examples, but the description of the examples is not intended to limit the solution of the present invention. Equivalent transformations that are only formal but not substantial should be regarded as the scope of the technical solutions of the present invention.

In the following description, all concepts related to the directionality or orientation of up, down, left, right, front and rear are based on the current position state of FIG. The special limitation of the technical solution.

Referring to FIG. 1 , a left frame 1 and a right frame 2 are shown. The left frame 1 and the right frame 2 correspond to each other from left to right. The lower part of the left frame 1 is from front to back (according to the traveling direction of the vehicle). , the same below) are sequentially provided with a left footboard 11, a left front wheel 12 and a left rear wheel 13, and a left armrest 14 is provided on the upper part of the left frame 1, and a rear end upper part of the left frame 1 is provided with a On the left push handle 15, a right footboard 21, a right front wheel 22 and a right rear wheel 23 are sequentially arranged at the lower end of the right frame 2 from front to rear, and a right handrail 24 is arranged on the upper rear end of the right frame 1 , and a right push handle 25 is provided at the upper rear end of the right frame 2; a seat support cloth 3 and a seat back support cloth 4 are shown, and the left edge of the seat support cloth 3 and the left frame 1 The upper part is fixed, and the right edge part of the seat support 3 is fixed with the upper part of the right frame 2; The lower part of the part is fixed with the rear end of the left frame 1, and the upper part of the right edge part of the seat back support 4 is fixed on the right push handle 25 through the right cloth ferrule 42, and the lower part of the right edge part is connected with the right frame. The rear end of 2 is fixed; an electrical controller 10 and a manual operation controller 20 are shown, the electrical controller 10 is arranged on the aforementioned right frame 2, and the manual operation controller 20 is arranged on the front end of the aforementioned right armrest 24, and The manual operation controller 20 is controlled by the electric controller 10 in a remote control manner; there is shown a frame transverse folding mechanism 5 for making the left frame 1 and the right frame 2 close or repel each other. The frame transverse folding mechanism 5 is connected between the left frame 1 and the right frame 2 ; a battery 6 is shown, and the aforementioned electric controller 10 is electrically connected to the battery 6 .

The applicant needs to explain that: if the aforementioned manual operation controller 20 is arranged at the front end of the left armrest 14 and the electrical controller 10 is correspondingly transferred to the left frame 1, in order to satisfy left-handed or left-handed manual operation control If the requirements for convenient operation of the device 20 are met, it should be regarded as the technical connotation scope of the disclosure of the present invention and is also bound by the scope of patent protection.

As the technical point of the technical solution provided by the present invention: a left push handle folding mechanism 7 is arranged between the upper rear end of the left frame 1 and the left push handle 15, and the upper rear end of the right frame 2 is connected to the aforesaid left push handle 15. A right push handle folding mechanism 8 is arranged between the right push handles 25 , and the aforementioned battery 6 is arranged on the aforementioned frame transverse folding mechanism 5 .

Continuing with FIG. 1 , the aforementioned left frame 1 has a left frame lower cross tube 16 and a left frame upper cross tube 17 , between the front end of the left frame lower cross tube 16 and the front end of the left frame upper cross tube 17 It is connected by the front transition longitudinal tube 18a of the left frame, and the rear end of the left frame lower cross tube 16 and the rear end of the left frame upper cross tube 17 are connected by the left frame rear transition tube 18b; the aforementioned right frame 2. There is a right frame lower horizontal tube 26 and a right frame upper horizontal tube 27. The front end of the right frame lower horizontal tube 26 and the front end of the right frame upper horizontal tube 27 are connected by a right frame front transition vertical tube 28a. The rear end of the lower horizontal tube 26 of the right frame and the rear end of the upper horizontal tube 27 of the right frame are connected by the right frame buckle transition tube 28b; the front end of the lower horizontal tube 16 of the left frame is folded downward. A left footboard fixing folding arm 161 is unfolded, a right footboard fixing folding arm 261 is folded downward at the front end of the aforesaid lower cross tube 26 of the right frame, and a right footboard fixing folding arm 261 is unfolded upwardly at the rear end of the aforesaid left frame upper transverse tube 17. The left push handle connection pipe 171 has a right push handle connection pipe 271 folded upward at the rear end of the horizontal pipe 27 on the right frame; The aforementioned left front wheel 12 is arranged at the front end of the aforementioned left frame lower cross tube 16, and the aforementioned left rear wheel 13 is arranged at the junction of the left frame lower horizontal tube 16 and the lower end of the aforementioned left frame rear transition tube 18b, and A left rear wheel drive motor 131 is disposed on the side of the left rear wheel 13 facing the aforementioned right rear wheel 23 , and the aforementioned left armrest 14 has a left armrest support tube 141 , and the rear end of the left armrest support tube 141 is connected to the aforementioned left pusher The front side of the connecting pipe 171 is fixed, and the middle part of the left armrest support pipe 141 is fixed to the left frame upper cross pipe 17 through the left support pipe 1411. The aforementioned left push handle 15 corresponds to the upper portion of the aforementioned left push handle connecting pipe 171; the aforementioned The right footboard 21 is arranged on the fixed arm 261 of the right footboard in a vertically adjustable manner, the right front wheel 22 is arranged on the front end of the lower cross tube 26 of the right frame, and the right rear wheel 23 is arranged on the lower rail of the right frame. The junction between the tube 26 and the lower end of the right frame buckle transition tube 28b, and a right rear wheel drive motor 231 is disposed on the side of the right rear wheel 23 facing the left rear wheel 13, and the right armrest has a right armrest The support tube 241, the rear end of the right armrest support tube 241 is fixed with the front side of the right push handle connecting tube 271, and the middle part of the right armrest support tube 241 is fixed with the right frame upper horizontal tube 27 through the right support tube 2411, The aforementioned right push handle 25 corresponds to the upper portion of the aforementioned right push handle connecting pipe 271 ; the aforementioned left rear wheel drive motor 131 and the aforementioned right rear wheel drive motor 231 are electrically connected to the aforementioned electrical controller 10 ; the aforementioned left edge of the seat support cloth 3 It is fixed with the upper horizontal tube 17 of the aforementioned left frame, and the right edge of the seat support 3 is fixed with the aforementioned upper horizontal tube 27 of the right frame; the lower part of the left edge of the aforementioned seat back support 4 is connected to the left push handle. The rear side of 171 is fixed, and the lower part of the right edge of the seat back support 4 is fixed with the rear side of the right push handle connecting pipe 271, and the aforementioned left push handle 15 corresponds to Above the left push handle connecting pipe 171, and the aforementioned right push handle 25 corresponds to the upper side of the right push handle connecting pipe 271; the aforementioned frame transverse folding mechanism 5 is connected to the left frame lower transverse pipe 16 and the left frame upper transverse pipe 17 and the lower horizontal tube 26 of the right frame and the upper horizontal tube 27 of the right frame; the aforementioned battery 6 is in the shape of a rectangular body; the aforementioned left push handle folding mechanism 7 is arranged on the upper part of the aforementioned left push handle connecting pipe 171 and the aforementioned Between the lower ends of the left push handle 15, the aforementioned right push handle folding mechanism 8 is arranged between the upper portion of the aforementioned right push handle connecting pipe 271 and the lower end of the aforementioned right push handle 25; the aforementioned manual operation controller 20 is arranged on the aforementioned right push handle 20. The handrail supports the front end of the pipe 241 .

Please refer to FIG. 2 and FIG. 4 in conjunction with FIG. 1. As shown in FIG. 2, a locking pin latch matching tube 251 is provided at the lower end of the aforementioned right push handle 25; The structure of the aforementioned left push handle folding mechanism 7 between the lower ends of the aforementioned handle 15 is the same as that of the aforementioned right push handle folding mechanism 8 provided between the upper portion of the aforementioned right push handle connecting pipe 271 and the lower end of the aforementioned right push handle 25, Therefore, the applicant will only describe the right handle folding mechanism 8 below. The right handle folding mechanism 8 includes a locking sleeve 81 , a hinge plate 82 , a right handle locking pin 83 , a locking pin actuating wrench 84 and a hinge shaft 85 , The lower end of the locking sleeve 81 is fixed with the upper end of the aforementioned right push handle connecting pipe 271, and the upper end of the locking sleeve 81 protrudes out of the upper end face of the right pushing handle connecting pipe 271. The locking sleeve 81 forms a locking sleeve cavity 811, the locking sleeve cavity The side of the 811 facing the hinge plate 82 forms an opening, that is, an opening, and a pin hole 8111 is opened on the bottom wall of the cavity of the locking sleeve 811 and at a position corresponding to the locking pin 83 of the right push handle. The sleeve 81 faces the lower part of the side of the hinge plate 82, the lower end of the hinge plate 82 is hinged on the hinge shaft 85, and the upper end of the hinge plate 82 is fixed with the aforementioned right push handle 25, and the right push plate locking pin 83 is toward the locking pin to actuate the wrench One end of 84 is connected to the lower end of the locking pin actuating wrench 84 after slidingly passing through the hinge plate 82. One end of the locking pin 83 toward the pin hole 8111 is latched into or out of the pin hole 8111 , the locking pin actuating spanner 84 corresponds to the rear side of the hinge plate 82 and the upper end of the locking pin actuating spanner 84 protrudes beyond the upper surface of the hinge plate 82 .

2 and 4, a right push handle for connecting the right push handle locking pin 83 with the locking pin actuating wrench 84 is provided at one end of the aforementioned right push handle locking pin 83 facing the aforementioned locking pin actuating wrench 84 The locking pin is defined as a nut 831, and a latch head 832 (shown in FIG. 2) with a diameter larger than that of the right push handle locking pin 83 is formed at the end of the right push handle locking pin 83 toward the aforementioned pin hole 8111, and the latch head 832 is bolted into Or out of the pin hole 8111, a spring 833 is sleeved in the middle of the right push handle locking pin 83 and located in the aforementioned sleeve cavity 2511. The other end is supported on the aforementioned hinge plate 82 .

As shown in FIG. 4 , a pair of hinge shaft fixing ears 812 are formed at the lower end of the aforementioned locking sleeve 81 and on the side facing the aforementioned hinge plate 82 , and the aforementioned hinge shaft 85 is inserted through the pair of hinge shaft fixing ears 812 and on the hinge shaft The end of 85 is screwed with a hinge shaft defining nut 851; a pair of hinge plate hinge ears 821 extend from the lower end of the aforementioned hinge plate 82. The middle of the hinge shaft 85 is hinged, and a shaft sleeve 852 is sleeved on the hinge shaft 85 and corresponding to the position between the hinge ears 821 of the pair of hinge plates.

When the left push handle 15 and the right push handle 25 are to be changed from the state shown in FIGS. 1 and 2 to the folded state shown in FIGS. 3 and 4 , taking the operation of the right push handle folding mechanism 8 as an example, the The operator, the user or the escort, pulls the upper end of the locking pin actuating wrench 84 (in the position shown in Fig. 1 and Fig. 2 ) toward the direction away from the locking sleeve 81, which drives the right push handle locking pin 83, and then pushes the locking pin 83 to the right. In the state of compressing the spring 833, the locking pin 83 of the right push handle is withdrawn from the pin hole 8111. At this time, the right push handle 25 is released from the engagement (fit) relationship with the upper end of the right push handle connecting pipe 271, and can be stretched and displayed. state shown in Figures 3 and 4. In this state, the right cloth ring 42 on the upper edge of the seat back support 4 is also folded and unfolded along with the right push handle 25, and vice versa. Since the operation of the left push handle folding mechanism 7 is the same as that of the right push handle folding mechanism 8 and both are operated simultaneously, the applicant will not repeat them.

As shown in FIG. 2 to FIG. 4 , a right push handle connecting pipe plug sleeve 2711 is embedded at the position of the upper end nozzle of the aforementioned right push handle connection pipe 271 , and a right push handle connection pipe plug sleeve 2711 is embedded at the position of the lower end pipe port of the aforementioned right push handle 25 . There is a right push handle plug sleeve 252.

Continuing with FIG. 1 , a left stub 172 is welded to the right side of the horizontal tube 17 on the left frame, and a left edge fixing pressure plate 1721 of the seat support cloth is arranged above the left stub 172 . The left side of the tube 27 is welded with a right holder 272, and a seat holder right edge fixing pressure plate 2721 is arranged above the right holder 272; the left edge of the seat holder 3 is clamped on the left side of the seat holder. Between the edge fixing pressure plate 1721 and the left escutcheon 172, and the left edge fixing pressure plate 1721 of the seat support cloth and the left end custodian 172 are fixed by the seat support cloth left edge fixing pressure plate screw 17211, the right edge of the seat support cloth 3 is fixed. It is clamped between the fixing pressure plate 2721 on the right edge of the seat support cloth and the right supporting plate 272, and the fixing pressure plate 2721 on the right edge of the seat supporting cloth is fixed with the right supporting plate 272 by the right edge fixing pressure plate screw 27211 of the seat support cloth; the aforementioned car The rack lateral folding mechanism 5 is connected to the left and right stubs 172 and 272 described above.

1 also shows that the lower part of the left edge of the seat back support 4 is pressed and fixed between the left spread plate 43 and the rear side of the left push handle connecting pipe 171 through the left presser foot plate 43 . The left pressing plate 43 is fixed by screws and the left push connecting pipe 171 . Similarly, the lower part of the right edge of the seat back support cloth 4 is pressed and fixed between the right cloth pressing plate 44 and the rear side of the right push handle connecting pipe 271 through the right cloth pressing plate 44, and the aforementioned right cloth pressing plate 44 passes through The screw and the right push handle the connecting pipe 272 are fixed.

Continuing with FIG. 1 , the aforementioned frame transverse folding mechanism 5 includes a first folding rod I51, a second folding rod II52, a third folding rod III53, a fourth folding rod IV54, a first link I55, a second link II56 and a Three-link III57, the left end of the first folding rod I51 is hinged with the left hinge seat I512 of the first folding rod through the first hinge pin I511. The side is fixed, the right end of the first folding rod I51 is fixed with the aforementioned right hosting 272, the middle part of the first folding rod I51 is hinged with the middle part of the second folding rod II52 through the second hinge pin II513, and the second folding rod II52 is located in the first folding rod II52. The front side of the folding rod I51 and the left end of the second folding rod II52 are fixed with the aforementioned left hoist 172, and the right end of the second folding rod II52 is hinged with the second folding rod right hinge seat II522 through the third hinge pin III521, and the The second folding rod right hinge seat II522 is fixed to the left side of the aforesaid right frame lower cross tube 26. The third folding rod III53 is located at the rear side of the first folding rod I51 and is parallel to the first folding rod I51. The third folding rod The left end of III53 is hinged with the lower end of the aforesaid left frame rear transition tube 18b, the right end of the third folding rod III53 is fixed with the right hosting 272, and the middle part of the third folding rod III53 is connected to the fourth folding rod IV54 through the fourth hinge pin IV531. The middle of the fourth folding rod IV54 is located at the rear side of the third folding rod III53 and is parallel to the second folding rod II52. The left end of the fourth folding rod IV54 is fixed with the aforesaid left socket 172, and the right end is hinged through the fifth The pin V541 is hinged with the left end of the third link III57, and the right end of the third link III57 is connected with the aforementioned right frame rear transition tube 28b, and the first link I55 is hinged on the left end of the fourth folding rod IV54. Between the upper ends of the rear transition tube 18b of the frame, the second link II56 is hinged between the right end of the third folding rod III53 and the upper end of the right frame rear transition tube 28b; the aforementioned battery 6 is arranged between the first folding rod I51 and the upper end of the right frame rear transition tube 28b. Between the left ends of the third folding rod III53.

As shown in FIG. 1 , as a preferred solution, a left frame balance wheel bar 19 is connected to the right side of the aforementioned left frame rear transition tube 18b, and a pair of anti-roll bars is provided at the rear end of the left frame balance wheel bar 19 . Rear left balance wheel 191; a right frame balance wheel bar 29 is connected to the left side of the aforesaid right frame rear transition tube 28b, and a pair of anti-backward tilt right balance wheels are arranged at the rear end of the right frame balance wheel bar 29 291.

A pair of battery fixing strips 58 spaced apart and parallel to each other are fixed between the left ends of the first folding rod I51 and the third folding rod III53, and the battery 6 is fixed between the pair of battery fixing strips 58; A pair of folding-rod connecting strips 59 which are spaced apart and parallel to each other are fixed between the right ends of the second folding rod II52 and the fourth folding rod IV54.

Please refer to FIG. 3. For convenience and clear view of the relevant components, although the applicant has removed the seat support 3 and the seat back support 4 mentioned many times above in FIG. invention creates any confusion. When the left and right frames 1 and 2 shown in FIG. 1 are in the repulsed state to be changed from the horizontally folded state shown in FIG. 3 , that is, the left and right frames 1 and 2 are in the closed state, then just lift up Pulling the seat support cloth 3 shown in FIG. 1, the right ends of the first folding rod I51 and the third folding rod III53 of the structural system of the aforementioned frame transverse folding mechanism 5 with scissor effect are turned counterclockwise at an angle, and the second The left ends of the folding rod II52 and the fourth folding rod III54 are rotated clockwise through an angle, so that the left and right frames 1 and 2 are closed toward each other and the battery 6 is in a vertical state. According to the space conditions, the left and right push handle folding mechanisms 7 and 8 can also be folded as described by the applicant above, so that they are in the state shown in Figures 3 and 4. Since the unfolding operation is opposite to the above, it will not be repeated. instruction.

Industrial Applicability

This application has been implemented. To sum up, the technical solution provided by the present invention makes up for the shortcomings in the prior art, successfully completes the invention task, and faithfully realizes the technical effect stated in the above technical effect column by the applicant.

Claims

An electric wheelchair with a double-folding function, comprising a left frame (1) and a right frame (2), the left frame (1) and the right frame (2) corresponding to each other left and right, and the left frame (1) and the right frame (2) correspond to each other left and right. The lower part of (1) is provided with a left footboard (11), a left front wheel (12) and a left rear wheel (13) in sequence from front to back, and a left handrail (14) is arranged on the upper part of the left frame (1). ), and a left push handle (15) is arranged on the upper part of the rear end of the left frame (1), and a right footboard (21), a right front wheel ( 22) and a right rear wheel (23), and a right handrail (24) is arranged at the upper rear end of the right frame (1), and a right push handle (25) is arranged at the upper rear end of the right frame (2). ); a seat support cloth (3) and a seat back support cloth (4), the left edge of the seat support cloth (3) is fixed with the upper part of the left frame (1), and the seat support cloth (3) The right edge part of the seat backrest (4) is fixed to the upper part of the right frame (2), the upper part of the left edge part of the seat back support (4) is fixed on the left push handle (15), and the lower part of the left edge part is fixed to the left frame (1). ) is fixed at the rear end, the upper part of the right edge of the seat back support (4) is fixed on the right push handle (25), and the lower part of the right edge is fixed with the rear end of the right frame (2); an electrical A controller (10) and a manual operation controller (20), the electrical controller (10) is arranged on the right frame (2), and the manual operation controller (20) is arranged on the right armrest (24) front end, and the manual operation controller (20) is controlled by the electric controller (10) by remote control; one is used to make the left frame (1) and the right frame (2) close or repel each other An open frame lateral folding mechanism (5), the frame lateral folding mechanism (5) is connected between the left frame (1) and the right frame (2); a battery (6), the electrical controller (10) is electrically connected to the battery (6); it is characterized in that a left push handle folding mechanism (7) is provided between the upper rear end of the left frame (1) and the left push handle (15), A right push handle folding mechanism (8) is arranged between the upper rear end of the right frame (2) and the right push handle (25), and the battery (6) is arranged on the transverse folding mechanism of the frame (5) on.
The electric wheelchair with double folding function according to claim 1, characterized in that the left frame (1) has a left frame lower horizontal tube (16) and a left frame upper horizontal tube (17), The front end of the left frame lower cross tube (16) and the front end of the left frame upper cross tube (17) are connected by the left frame front transition longitudinal tube (18a), and the rear of the left frame lower cross tube (16) The rear end of the left frame and the rear end of the upper cross tube (17) are connected by the left frame rear transition tube (18b); the right frame (2) has a right frame lower cross tube (26) and a The front end of the right frame upper cross tube (27), the front end of the right frame lower cross tube (26) and the front end of the right frame upper cross tube (27) are connected by the right frame front transition longitudinal tube (28a), and the right frame The rear end of the lower frame horizontal tube (26) and the rear end of the right frame upper horizontal tube (27) are connected by the right frame buckle transition tube (28b); the left frame lower horizontal tube (16) A left footboard fixing arm (161) is folded downward from the front end of the right frame, and a right footboard fixing arm (261) is folded downward at the front end of the lower cross tube (26) of the right frame. A left push handle connection pipe (171) is folded upward from the rear end of the upper horizontal pipe (17) on the frame, and a right push handle connection pipe (271) is folded upward at the rear end of the right frame upper transverse pipe (27). ); the left footboard (11) is arranged on the left footboard fixed folding arm (161) in an up-and-down manner, and the left front wheel (12) is arranged on the lower cross tube (16) of the left frame front end, and the left rear wheel (13) is arranged at the junction of the lower cross tube (16) of the left frame and the lower end of the rear transition tube (18b) of the left frame, and the left rear wheel (13) The side facing the right rear wheel (23) is provided with a left rear wheel drive motor (131), the left armrest (14) has a left armrest support tube (141), and the left armrest support tube (141) is provided with a left armrest support tube (141). The rear end is fixed with the front side of the left push handle connecting pipe (171), and the middle part of the left armrest support pipe (141) is fixed with the left frame upper cross pipe (17) through the left support pipe (1411), so The left push handle (15) corresponds to the upper part of the left push handle connecting pipe (171); the right footboard (21) is arranged on the right footboard fixing arm (261) in a vertically adjustable manner, and the right footboard (261) is The right front wheel (22) is arranged at the front end of the right frame lower transverse tube (26), and the right rear wheel (23) is arranged at the transition between the right frame lower transverse tube (26) and the right frame buckle The junction of the lower end of the pipe (28b), and a right rear wheel drive motor (231) is arranged on the side of the right rear wheel (23) facing the left rear wheel (13), and the right handrail has a right rear wheel (231). A handrail support pipe (241), the rear end of the right handrail support pipe (241) is fixed with the front side of the right push handle connecting pipe (271), and the middle part of the right handrail support pipe (241) passes through the right support pipe (2411) ) is fixed to the upper horizontal pipe (27) of the right frame, and the right push handle (25) corresponds to the upper part of the right push handle connecting pipe (271); and the right rear wheel drive motor (231) is electrically connected to the electrical controller (10); the left edge of the seat support cloth (3) is fixed with the upper horizontal tube (17) of the left frame, and the seat The right edge part of the seat support cloth (3) is fixed with the upper horizontal pipe (27) of the right frame; the lower part of the left edge part of the seat back support cloth (4) is fixed with the left push handle connecting pipe (171), The lower part of the right edge of the seat back support cloth (4) is fixed with the right push handle connecting pipe (271), the left push handle (15) corresponds to the upper part of the left push handle connecting pipe (171), and the right push handle (15) corresponds to the upper part of the left push handle connecting pipe (171). The push handle (25) corresponds to the upper part of the right push handle connecting pipe (271); the frame lateral folding mechanism (5) is connected to the lower cross pipe (16) of the left frame and the upper cross pipe (17) of the left frame and the between the lower horizontal tube (26) of the right frame and the upper horizontal tube (27) of the right frame; the battery (6) is in the shape of a rectangular body; the left push handle folding mechanism (7) is arranged on the left Between the upper part of the push handle connecting pipe (171) and the lower end of the left push handle (15), the right push handle folding mechanism (8) is arranged between the upper part of the right push handle connecting pipe (271) and the lower end of the left push handle (15). between the lower ends of the right push handle (25); the manual operation controller (20) is arranged at the front end of the right armrest support pipe (241).
The electric wheelchair with double folding function according to claim 2, characterized in that a locking pin latch matching pipe (251) is provided at the lower end of the right push handle (25); The structure of the left push handle folding mechanism (7) between the upper part of the left push handle (171) and the lower end of the left push handle (15) is connected with the upper part of the right push handle connecting pipe (271) and the The right push handle folding mechanism (8) between the lower ends of the right push handle (25) is the same, and the right push handle folding mechanism (8) includes a locking sleeve (81), a hinge plate (82), a right push handle locking The pin (83), the locking pin actuating wrench (84) and the hinge shaft (85), the lower end of the locking sleeve (81) is fixed with the upper end of the right push handle connecting pipe (271), and the upper end of the locking sleeve (81) Protruding out the upper end face of the right push handle connecting pipe (271), the locking sleeve (81) forms a locking sleeve cavity (811), and the locking sleeve cavity (811) forms an opening on the side facing the hinge plate (82). The bottom wall of the cavity of the locking sleeve (811) is provided with a pin hole (8111) at a position corresponding to the locking pin (83) of the right push handle, and the hinge plate hinge shaft (85) is arranged on the locking sleeve (81) facing the hinge plate (8111). 82), the lower end of the hinge plate (82) is hinged on the hinge shaft (85), and the upper end of the hinge plate (82) is fixed with the right push handle (25), and the right push plate locking pin (83) ) One end of the locking pin actuating spanner (84) is connected with the lower end of the locking pin actuating spanner (84) after slidingly passing through the hinge plate (82), and the middle part of the locking pin (83) is pushed right to the locking pin latch The sleeve cavity (2511) of the mating tube (251) is slidably fitted, and the end of the right push handle locking pin (83) toward the pin hole (8111) is latched into or out of the pin hole (8111), and the locking pin actuates the wrench (84) The upper end of the locking pin actuating wrench (84) corresponds to the rear side of the hinge plate (82) and protrudes out of the upper surface of the hinge plate (82).
The electric wheelchair with double-folding function according to claim 3, characterized in that an end of the right push handle locking pin (83) facing the locking pin actuating wrench (84) is provided with a The right push handle locking pin (83) is connected with the locking pin actuating wrench (84) to define the nut (831), and at the end of the right push handle locking pin (83) facing the pin hole (8111) A latch head (832) with a diameter larger than that of the right push handle locking pin (83) is formed, the latch head (832) is bolted into or out of the pin hole (8111), in the middle of the right push handle locking pin (83) and located at A spring (833) is sleeved in the sleeve cavity (2511), one end of the spring (833) is supported on the latch head step (8321) of the latch head (832), and the other end of the spring (833) is supported on the latch head step (8321) of the latch head (832). on the hinge plate (82).
The electric wheelchair with double folding function according to claim 3, characterized in that a pair of hinge shaft fixing ears (812) are formed at the lower end of the locking sleeve (81) and on the side facing the hinge plate (82). ), the hinge shaft (85) is inserted through the pair of hinge shaft fixing ears (812) and a hinge shaft limiting nut (851) is screwed at the end of the hinge shaft (85); on the hinge plate (82) There is a pair of hinge plate hinge ears (821) extending from the lower end of the hinge plate. A shaft sleeve (852) is sleeved on the shaft (85) and corresponding to a position between the pair of hinged plate hinge ears (821).
The electric wheelchair with double folding function according to claim 3, characterized in that a right push handle connection pipe plug sleeve (2711) is embedded in the position of the upper end nozzle of the right push handle connection pipe (271), A right push handle plug sleeve (252) is embedded at the position of the lower end nozzle of the right push handle (25).
The electric wheelchair with double-folding function according to claim 2, characterized in that a left escutcheon (172) is welded on the right side of the horizontal tube (17) on the left frame, and a left escutcheon (172) is welded on the right side of the left escutcheon (172). A seat support left edge fixing pressure plate (1721) is arranged above the right frame, and a right holder (272) is welded on the left side of the horizontal tube (27) on the right frame, and is arranged above the right holder (272). There is a fixed pressure plate (2721) on the right edge of the seat support cloth; the left edge part of the seat support cloth (3) is clamped between the fixed pressure plate (1721) on the left edge of the seat support cloth and the left support (172), And the left edge fixing pressure plate (1721) of the seat support cloth (1721) and the left tube (172) are fixed by the left edge fixing pressure plate screw (17211) of the seat support cloth, and the right edge part of the seat support cloth (3) is clamped. The right edge of the seat support is fixed between the pressure plate (2721) and the right host (272), and the right edge of the seat support is fixed by the right edge of the seat support plate (27211). (272) is fixed; the frame transverse folding mechanism (5) is connected with the left escutcheon (172) and the right escutcheon (272).
The electric wheelchair with double folding function according to claim 7, characterized in that the frame transverse folding mechanism (5) comprises a first folding rod I (51), a second folding rod II (52), a third folding rod Folding rod III (53), fourth folding rod IV (54), first link I (55), second link II (56) and third link III (57), first folding rod I (51) ) is hinged to the left hinge seat I (512) of the first folding rod through the first hinge pin I (511), and the left hinge seat I (512) of the first folding rod is connected to the lower horizontal tube of the left frame ( 16) The right side is fixed, the right end of the first folding rod I (51) is fixed with the right hosting (272), and the middle part of the first folding rod I (51) is connected with the second hinge pin II (513) through the second hinge pin shaft II (513). The middle of the folding rod II (52) is hinged, the second folding rod II (52) is located at the front side of the first folding rod I (51) and the left end of the second folding rod II (52) is connected to the left hosting (172) ) is fixed, and the right end of the second folding rod II (52) is hinged with the second folding rod right hinge seat II (522) through the third hinge pin shaft III (521), and the second folding rod right hinge seat II (522) ) is fixed to the left side of the lower cross tube (26) of the right frame, the third folding rod III (53) is located at the rear side of the first folding rod I (51) and is parallel to the first folding rod I (51), The left end of the third folding rod III (53) is hinged with the lower end of the left frame rear transition tube (18b), the right end of the third folding rod III (53) is fixed with the right hosting (272), and the third folding rod The middle part of III (53) is hinged with the middle part of the fourth folding rod IV (54) through the fourth hinge pin IV (531), and the fourth folding rod IV (54) is located at the rear side of the third folding rod III (53). And parallel to the second folding rod II (52), the left end of the fourth folding rod IV (54) is fixed with the left hosting (172), and the right end is connected with the third hinge pin V (541) through the fifth hinge pin. The left end of the link III (57) is hinged, and the right end of the third link III (57) is connected with the right frame rear transition tube (28b), and the first link I (55) is hinged at the fourth fold. Between the left end of the rod IV (54) and the upper end of the rear transition tube (18b) of the left frame, the second link II (56) is hinged on the right end of the third folding rod III (53) and the rear transition tube (18b) of the right frame. 28b); the battery (6) is arranged between the left end of the first folding rod I (51) and the third folding rod III (53).
The electric wheelchair with double folding function according to claim 2 or 8, characterized in that a left frame balance wheel bar (19) is connected to the right side of the rear transition pipe (18b) of the left frame, The rear end of the left frame balance wheel bar (19) is provided with a pair of anti-backward left balance wheels (191); a right frame balance wheel bar (191) is connected to the left side of the right frame rear transition tube (28b). 29), a pair of anti-backward tilting right balance wheels (291) are arranged at the rear end of the right frame balance wheel rod (29).
The electric wheelchair with double-folding function according to claim 8, characterized in that between the left ends of the first folding rod I (51) and the left end of the third folding rod III (53), a pair of both spaced apart and Battery fixing strips (58) parallel to each other, the battery (6) is fixed between a pair of battery fixing strips (58); between the second folding rod II (52) and the fourth folding rod IV ( A pair of folded rod connecting slats (59) spaced apart and parallel to each other are fixed between the right ends of 54).