Electric wheelchair convenient to fold

Abstract

The utility model discloses an electric wheelchair convenient to fold, which comprises a cushion, a first supporting rod, a second supporting rod, a guide wheel, a driving wheel and armrests, and the tail end of the first supporting rod is hinged with the tail end of the second supporting rod through a connecting shaft; the connecting shaft penetrates through the cushion and is connected with the first supporting rod and the second supporting rod on the two sides of the cushion. The guide wheel is arranged at the lower end of the first supporting rod, and the driving wheel is arranged at the lower end of the second supporting rod; a rocker controller is arranged on the handrail; a limiting rod is arranged between the first supporting rod and the second supporting rod and is used for relatively fixing the first supporting rod and the second supporting rod; the first supporting rod is further provided with a locking mechanism, and the locking mechanism is used for relatively fixing the cushion and the first supporting rod. By the adoption of the electric wheelchair, the storage size of the electric wheelchair can be reduced, the weight is reduced, and storage and transportation are convenient.

Description

Technical Field

[0001] This utility model relates to the field of electric wheelchair design, and more particularly to an electric wheelchair that is easy to fold. Background Technology

[0002] Electric wheelchairs are a common mode of transportation for people with mobility impairments. With the development of electric wheelchair technology, the number of users is increasing, and even some able-bodied people are choosing electric wheelchairs for short-distance travel. Because electric wheelchairs often need to be transported in a vehicle, lightweight design and portability are key research areas. However, due to the need for long battery life and stable support, electric wheelchairs often weigh over 30kg, making them difficult for even able-bodied adults to move. Some wheelchairs lack folding functionality, and those that do only fold down the backrest, resulting in a large folded size that is difficult to fit into the trunk or other transport space of a car. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides an easy-to-fold electric wheelchair, which reduces the storage volume and weight of the electric wheelchair, making it convenient for storage and transportation.

[0004] To address the aforementioned technical problems, this utility model provides an easily foldable electric wheelchair, comprising a seat cushion, a first support rod, a second support rod, guide wheels, drive wheels, and armrests. The ends of the first and second support rods are hinged together by a connecting shaft. The connecting shaft passes through the seat cushion and connects to the first and second support rods on both sides of the seat cushion. The guide wheels are located at the lower ends of the first support rods, and the drive wheels are located at the lower ends of the second support rods. A rocker controller is provided on the armrests. A limiting rod is provided between the first and second support rods to fix the first and second support rods relative to each other. A locking mechanism is also provided on the first support rod to fix the seat cushion relative to the first support rod.

[0005] As an improvement to the above solution, the locking mechanism includes a pin, the first support rod is provided with a first pin hole, and the seat cushion is provided with a second pin hole. When the seat cushion is at a predetermined angle to the first support rod, the first pin hole and the second pin hole are directly opposite each other, and the pin can be inserted into the first pin hole and the second pin hole simultaneously.

[0006] As an improvement to the above solution, the pin is disposed in the first pin hole, the pin is provided with a return spring, and the outer end of the pin is provided with a gripping part.

[0007] As an improvement to the above solution, the first support rod and the second support rod have the same length.

[0008] As an improvement to the above solution, the limiting rod includes a first limiting rod hinged to the first support rod and a second limiting rod hinged to the second support rod, wherein the first limiting rod and the second limiting rod are hinged to each other.

[0009] As an improvement to the above solution, a limiting sleeve is also fitted on the second limiting rod, and the limiting sleeve can move relative to the second limiting rod and the first limiting rod.

[0010] As an improvement to the above solution, the first support rods on both sides are connected by a crossbar, and the guide wheel is mounted on the lower end of the first support rod via a guide wheel seat.

[0011] As an improvement to the above solution, the second support rods on both sides are connected by a horizontal plate, on which a power battery is provided; each drive wheel has an independent drive motor.

[0012] As an improvement to the above solution, the seat cushion is further provided with a backrest, and the armrest is provided on the backrest; the seat cushion includes a seat cushion frame and a seat cushion body, the seat cushion frame has an upwardly extending connecting rod, and the backrest is hinged to the connecting rod.

[0013] Implementing this utility model has the following beneficial effects:

[0014] The seat cushion is mounted on the connecting shaft, which is located at the top of the first support rod and the second support rod. This allows the first support rod and the second support rod to be completely overlapped during storage, and the seat cushion to be placed between the first support rods on both sides, reducing the storage volume and facilitating storage and transportation.

[0015] A limiting rod is provided between the first support rod and the second support rod. The limiting rod can fix the first support rod and the second support rod of the electric wheelchair in the working state to prevent the first support rod and the second support rod, which are the main supports, from swinging relative to each other.

[0016] The first support rod is also equipped with a locking mechanism, which can fix the seat of the electric wheelchair in operation relative to the first support rod, so as to prevent relative movement between the seat and the first support rod and ensure the safety of the passenger. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an easy-to-fold electric wheelchair in working state according to the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of an electric wheelchair that is easy to fold when it is in a folded state.

[0019] Figure 3This is a structural schematic diagram of the locking mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the limiting rod of this utility model. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings. It is hereby declared that the terms "up," "down," "left," "right," "front," "back," "inner," and "outer," etc., appearing or about to appear in this document, are based solely on the accompanying drawings and are not intended to specifically limit this utility model.

[0022] like Figures 1-4 As shown in the figure, a specific embodiment of this utility model provides an easy-to-fold electric wheelchair, including a seat cushion 1, a first support rod 2, a second support rod 3, a guide wheel 4, a drive wheel 5, and an armrest 6. The ends of the first support rod 2 and the second support rod 3 are hinged together by a connecting shaft 7. The connecting shaft 7 passes through the seat cushion 1 and connects to the first support rod 2 and the second support rod 3 on both sides of the seat cushion 1. The guide wheel 4 is located at the lower end of the first support rod 2, and the drive wheel 5 is located at the lower end of the second support rod 3. A rocker controller 8 is provided on the armrest 6. A limiting rod 9 is provided between the first support rod 2 and the second support rod 3, and the limiting rod 9 is used to fix the first support rod 2 and the second support rod 3 relative to each other. A locking mechanism 10 is also provided on the first support rod 2, and the locking mechanism 10 is used to fix the seat cushion 1 relative to the first support rod 2.

[0023] With the above structure, the seat cushion 1 is mounted on the connecting shaft 7, which is located at the top of the first support rod 2 and the second support rod 3. This allows the first support rod 2 and the second support rod 3 to be completely overlapped during storage, with the seat cushion 1 positioned between the first support rods 2 on both sides, reducing storage volume and facilitating storage and transportation. A limiting rod 9 is provided between the first support rod 2 and the second support rod 3. The limiting rod 9 can fix the first support rod 2 and the second support rod 3 of the electric wheelchair in operation relative to each other, preventing relative swinging between the first support rod 2 and the second support rod 3, which serve as the main supports. A locking mechanism 10 is also provided on the first support rod 2. The locking mechanism 10 can fix the seat cushion 1 of the electric wheelchair in operation relative to the first support rod 2, preventing relative movement between the seat cushion 1 and the first support rod 2 and ensuring the safety of the passenger.

[0024] The locking mechanism 10 includes a pin 11. The first support rod 2 is provided with a first pin hole 21, and the seat cushion 1 is provided with a second pin hole 22. When the seat cushion 1 and the first support rod 2 are at a predetermined angle, the first pin hole 21 and the second pin hole 22 are directly opposite each other, and the pin 11 can simultaneously extend into the first pin hole 21 and the second pin hole 22.

[0025] Preferably, the pin 11 is disposed in the first pin hole 21, the pin 11 is provided with a return spring 12, and the outer end of the pin 11 is provided with a grip portion 111. This electric wheelchair has two states: a working state and a folded state. When the wheelchair is switched from the folded state to the working state, the first support rod 2 and the second support rod 3 can be manually opened. After being opened to the correct position, the locking mechanism 10 fixes the first support rod 2 and the second support rod 3 relative to each other. Then, the seat cushion 1 is flipped up. When the seat cushion 1 is flipped to a horizontal position, the first pin hole 21 and the second pin hole 22 are aligned. Under the action of the return spring 12, the pin 11 extends from the first pin hole 21 into the second pin hole 22, thereby locking the seat cushion 1 and the first support rod 2. When the wheelchair is switched from the working state to the folding state, the latch 11 can be manually pulled out from the second latch hole 22 through the grip 111, the seat 1 can be flipped up to be parallel to the first support rod 2, and then the locking mechanism 10 can be pushed to unlock the first support rod 2 and the second support rod 3. The first support rod 2 and the second support rod 3 can be swung relative to each other to a position that is almost overlapping. Finally, the other accessories can be put away, and the wheelchair can be stored.

[0026] Specifically, the limiting rod 9 includes a first limiting rod 91 hinged to the first support rod 2 and a second limiting rod 92 hinged to the second support rod 3, with the first limiting rod 91 and the second limiting rod 92 hinged to each other. A limiting sleeve 93 is also fitted onto the second limiting rod 92, and the limiting sleeve 93 is movable relative to the second limiting rod 92 and the first limiting rod 91. For ease of storage and to showcase a symmetrical aesthetic, the first support rod 2 and the second support rod 3 are of the same length.

[0027] In some embodiments, the first support rods 2 on both sides are connected by a crossbar 13, and the guide wheel 4 is mounted on the lower end of the first support rod 2. The second support rods 3 on both sides are connected by a cross plate 14, on which a power battery 15 is provided; each drive wheel 5 has an independent drive motor 16.

[0028] It should be noted that the first support rod 2 at the front is connected by a crossbar 13, which reduces the weight of the connecting rod and thus the overall weight of the wheelchair. The second support rod 3 at the rear is connected by a crossplate 14, which provides greater structural strength and ensures that the second support rod 3, which connects to the drive wheel, can transmit power evenly outward. In addition, the crossplate 14 also provides space for the power battery 15, providing the most stable structure while maximizing weight reduction.

[0029] The seat cushion 1 is also provided with a backrest 17, and the armrest is provided on the backrest 17. The seat cushion 1 includes a seat cushion frame 18 and a seat cushion body 19. The seat cushion frame 18 has an upwardly extending connecting rod 181. The backrest 17 is hinged to the connecting rod 181 and can be folded to fit snugly against the surface of the seat cushion 1, reducing the space occupied when folded. The connecting rod 181 is integrally formed from the seat cushion frame 18, which is a metal frame that provides greater structural strength and ensures the stability of the backrest 17.

[0030] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this invention, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A foldable electric wheelchair, characterized in that, It includes a seat cushion, a first support rod, a second support rod, a guide wheel, a drive wheel, and an armrest. The ends of the first support rod and the second support rod are hinged together by a connecting shaft. The connecting shaft passes through the seat cushion and is connected to the first support rod and the second support rod on both sides of the seat cushion; The guide wheel is located at the lower end of the first support rod, and the drive wheel is located at the lower end of the second support rod; The armrest is equipped with a rocker controller; a limiting rod is provided between the first support rod and the second support rod, and the limiting rod is used to fix the first support rod and the second support rod relative to each other. The first support rod is also provided with a locking mechanism, which is used to fix the seat cushion relative to the first support rod.

2. The foldable electric wheelchair as described in claim 1, characterized in that, The locking mechanism includes a pin. The first support rod has a first pin hole, and the seat cushion has a second pin hole. When the seat cushion is at a predetermined angle to the first support rod, the first pin hole and the second pin hole are directly opposite each other, and the pin can be inserted into the first pin hole and the second pin hole simultaneously.

3. The foldable electric wheelchair as described in claim 2, characterized in that, The pin is disposed in the first pin hole, the pin is provided with a return spring, and the outer end of the pin is provided with a gripping part.

4. The foldable electric wheelchair as described in claim 1, characterized in that, The first support rod and the second support rod have the same length.

5. The foldable electric wheelchair as described in claim 1, characterized in that, The limiting rod includes a first limiting rod hinged to a first support rod and a second limiting rod hinged to a second support rod, wherein the first limiting rod and the second limiting rod are hinged to each other.

6. The foldable electric wheelchair as described in claim 5, characterized in that, The second limiting rod is also fitted with a limiting sleeve, which can move relative to the second limiting rod and the first limiting rod.

7. The foldable electric wheelchair as described in claim 1, characterized in that, The first support rods on both sides are connected by a crossbar, and the guide wheel is mounted on the lower end of the first support rod via a guide wheel seat.

8. The foldable electric wheelchair as described in claim 1 or 7, characterized in that, The second support rods on both sides are connected by a horizontal plate, on which a power battery is provided; each drive wheel has an independent drive motor.

9. The foldable electric wheelchair as described in claim 1, characterized in that, The seat cushion is also provided with a backrest, and the armrest is provided on the backrest; the seat cushion includes a seat cushion frame and a seat cushion body, the seat cushion frame has an upwardly extending connecting rod, and the backrest is hinged to the connecting rod.

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