Electrically powered wheelchair

Abstract

The application provides an electric wheelchair, which comprises wheels, a motor, a frame and a seat, the wheels are rotationally connected with the frame, the seat is arranged above the frame, the motor is arranged on the frame and is used for driving the wheels to rotate; the frame comprises a body, a locking member and a cover, the body forms a containing cavity for containing a battery, the cover can cover an opening of the containing cavity, the locking member is movably connected with the body, the cover has a through hole and an insertion part, the body is provided with an insertion opening matched with the insertion part, the insertion opening prevents the cover from moving upward when the insertion part is inserted into the insertion opening, and the locking member prevents the cover from moving in the plane direction of the through hole when the locking member is arranged in the through hole. The electric wheelchair in the application can realize an electric wheelchair which can conveniently open and close the battery compartment cover and can ensure that the cover is firm when being closed.

Description

Technical Field

[0001] This utility model relates to the field of transportation, and in particular to an electric wheelchair. Background Technology

[0002] Electric wheelchairs, as a means of transportation to assist people with mobility impairments, are widely used in homes, medical institutions, nursing homes, and other settings. Electric wheelchairs are generally powered by batteries. In existing electric wheelchairs, the battery compartment has a cover, which is typically secured with bolts, making opening and closing inconvenient. Clip-on or magnetic structures, on the other hand, can easily open during wheelchair movement due to bumps, posing a safety risk to the battery. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an electric wheelchair that allows for easy opening and closing of the battery compartment cover while ensuring a secure fit when closed.

[0004] Therefore, one embodiment provides an electric wheelchair, including wheels, a motor, a frame, and a seat. The wheels are rotatably connected to the frame, the seat is disposed above the frame, and the motor is disposed on the frame and used to drive the wheels to rotate. The frame includes a body, a locking member, and a cover. The body forms a receiving cavity for accommodating a battery, and the cover is capable of covering the opening of the receiving cavity. The locking member is movably connected to the body. The cover has a through hole and an insertion portion. The body has an insertion port that matches the insertion portion. When the insertion portion is inserted into the insertion port, the insertion port prevents the cover from moving upward. When the locking member is inserted through the through hole, the locking member prevents the cover from moving in the plane direction of the through hole.

[0005] As a further alternative to the electric wheelchair, the frame also includes an elastic element, the two ends of which are respectively connected to the body and the locking element.

[0006] As a further alternative to the electric wheelchair, the body has a first limiting portion and the locking member has a first step, the first limiting portion and the first step being adapted to prevent the locking member from disengaging from the body.

[0007] As a further alternative to the electric wheelchair, the locking member has a second step that abuts against the edge of the through hole.

[0008] As a further option for the electric wheelchair, the receiving cavity is also provided with a partition plate for separating the multiple batteries.

[0009] As a further alternative to the electric wheelchair, the cover is provided with a pressure plate facing the battery to secure it.

[0010] As a further alternative to the electric wheelchair, the cover has a recessed area, and the through hole is located in the recessed area.

[0011] As a further alternative to the electric wheelchair, the receiving cavity is located at the rear end of the frame.

[0012] As a further alternative to the electric wheelchair, a control unit is also included, which is electrically connected to the battery and the motor.

[0013] As a further alternative to the electric wheelchair, the control unit is located at the front end of the frame.

[0014] Implementing the embodiments of this utility model will have the following beneficial effects:

[0015] According to the electric wheelchair in the above embodiments, the wheels are rotatably connected to the frame, and the motor drives the wheels to rotate, thereby moving the electric wheelchair. When it is necessary to cover the opening of the receiving cavity with the cover, the insert is inserted into the insertion port of the main body, thereby fixing the cover in the vertical direction. At this time, the locking member is moved so that the locking member at least partially passes through the through hole. The edges of the locking member and the through hole abut against each other, thereby fixing the cover relative to the main body in the plane direction of the through hole. When it is necessary to open the cover, the locking member is moved first, so that the locking member is removed from the through hole. Then, the cover can be moved in the plane direction of the through hole, and the insert is removed from the insertion port, so that the receiving cavity communicates with the outside. The electric wheelchair implementing this utility model can realize an electric wheelchair that can both easily open and close the battery compartment cover and ensure that the cover is secure when closed. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] in:

[0018] Figure 1 A schematic diagram of the overall structure of an electric wheelchair according to an embodiment of the present invention is shown;

[0019] Figure 2 It shows Figure 1 A schematic diagram of the cross-sectional structure at point AA along the middle edge;

[0020] Figure 3 It shows Figure 2 A magnified view of a portion of point A in the middle;

[0021] Figure 4 It shows Figure 2 A magnified view of a portion of point B in the middle;

[0022] Figure 5 This diagram shows an overall structural schematic of an electric wheelchair after the cover and body are separated, according to an embodiment of the present invention.

[0023] Figure 6 It shows Figure 5 Enlarged view of part C in the middle

[0024] Figure 7 A schematic diagram of the overall structure of a cover provided according to an embodiment of the present invention is shown.

[0025] Explanation of key component symbols:

[0026] Wheel-10; Battery-20; Frame-30; Seat-40; Body-310; Locking element-320; Cover-330; Receiving cavity-3110; Through hole-3310; First limiting part-3120; First step-3210; Second step-3220; Partition plate-3130; Pressure plate-3340; Recessed area-3320; Control unit-50; Insertion part-3350; Insertion port-3140. Detailed Implementation

[0027] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0028] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] An electric wheelchair is provided in this embodiment of the utility model. Please refer to [link / reference]. Figures 1-7 The vehicle includes wheels 10, a motor (not shown), a frame 30, and a seat 40. The wheels 10 are rotatably connected to the frame 30, the seat 40 is positioned above the frame 30, and the motor is mounted on the frame 30 and used to drive the wheels 10 to rotate. The frame 30 includes a body 310, a locking member 320, and a cover 330. The body 310 forms a receiving cavity 3110 for accommodating the battery 20. The cover 330 can cover the opening of the receiving cavity 3110. The locking member 320 is movably connected to the body 310. The cover 330 has a through hole 3310 and an insertion part 3350. The body 310 has an insertion port 3140 that matches the insertion part 3350. When the insertion part 3350 is inserted into the insertion port 3140, the insertion port 3140 prevents the cover 330 from moving upward. When the locking member 320 passes through the through hole 3310, the locking member 320 prevents the cover 330 from moving in the plane direction of the through hole 3310.

[0031] According to the electric wheelchair in the above embodiments, the wheels 10 are rotatably connected to the frame 30, and the motor drives the wheels 10 to rotate, thereby moving the electric wheelchair. When it is necessary to cover the opening of the receiving cavity 3110 with the cover 330, the insertion part 3350 is inserted into the insertion port 3140 of the body 310, thereby fixing the cover 330 in the vertical direction. At this time, the locking member 320 is moved so that the locking member 320 at least partially passes through the through hole 3310. The edges of the locking member 320 and the through hole 3310 abut against each other, thereby fixing the cover 330 relative to the body 310 in the planar direction of the through hole 3310. When it is necessary to open the cover 330, the locking member 320 is moved first, so that the locking member 320 is removed from the through hole 3310. Then, the cover 330 can be moved in the planar direction of the through hole 3310, and the insertion part 3350 is removed from the insertion port 3140, so that the receiving cavity 3110 communicates with the outside. The electric wheelchair of this invention can be made into an electric wheelchair that can both easily open and close the battery compartment cover and ensure that the cover is secure when closed.

[0032] In this embodiment, the planar direction of the through hole 3310 is not parallel to the vertical direction. Preferably, the planar direction of the through hole 3310 is perpendicular to the vertical direction. Here, the vertical direction refers to the top and bottom of the electric wheelchair, and is not necessarily parallel to the direction of gravity. The forward and backward direction refers to the forward and backward directions of the electric wheelchair.

[0033] There are usually multiple insertion parts 3350, and the insertion parts 3350 are generally located on the edge of the cover 330. The insertion port 3140 is provided corresponding to the insertion part 3350.

[0034] For details, please refer to Figure 2 and Figure 3 If the user moves the locking member 320 upward, the locking member 320 will pass through the through hole 3310, and the cover 330 will not be able to move relative to the body 310. If the user moves the locking member 320 downward, the locking member 320 will disengage from the through hole 3310, and the cover 330 will be able to move relative to the body 310.

[0035] A water-guiding groove (not shown) is provided on the main body 310 around the opening of the receiving cavity 3110. The water-guiding groove not only fits with the cover 330 to enhance the stability of the cover 330 after it is closed, but also prevents the edge of the cover 330 from falling into the water-guiding groove. In rainy or snowy environments, rainwater falls along the edge of the cover 330 into the water-guiding groove, preventing rainwater from falling into the receiving cavity 3110. A drainage hole is usually provided at the bottom of the water-guiding groove to drain all rainwater from the groove.

[0036] In some specific embodiments, the frame 30 also includes an elastic element (not shown), with its two ends connected to the body 310 and the locking element 320, respectively.

[0037] The frame 30 is composed not only of the basic body 310 and locking member 320, but also cleverly incorporates a key component: an elastic member. This elastic member plays a crucial connecting role. One end is firmly connected to the body 310 of the frame 30, which, as the main load-bearing and supporting structural part of the frame 30, typically possesses a relatively stable shape and strength. The other end of the elastic member is tightly connected to the locking member 320, which is mainly used to fix or lock certain components of the frame 30. This two-end connection method places the elastic member in a critical connecting position within the overall structure of the frame 30, enabling it to coordinate the interaction between the body 310 and the locking member 320.

[0038] The elastic element forces the locking element 320 into the interference position. Only when the user presses the locking element 320 can the force of the elastic element be overcome and the elastic element be moved to the non-interference position. During normal operation of the electric wheelchair, the elastic element can also prevent the locking element 320 from moving due to bumps, which would cause the cover 330 to open.

[0039] The elastic element is usually a compression spring.

[0040] In some specific embodiments, please refer to Figure 3 The main body 310 has a first limiting part 3120, and the locking member 320 has a first step 3210. The first limiting part 3120 and the first step 3210 are adapted to prevent the locking member 320 from coming off the main body 310.

[0041] The primary function of this design is to prevent the locking element 320 from accidentally detaching from the body 310. During vehicle operation, various complex road conditions and external forces may occur, such as bumps and collisions. If the locking element 320 lacks reliable securing measures, it may loosen or even detach due to external forces, thereby affecting the structural integrity and safety of the frame 30. Through the adaptation of the first limiting part 3120 and the first step 3210, even under significant external forces, the locking element 320 can be firmly fixed to the body 310, avoiding potential dangers caused by detachment.

[0042] Furthermore, when the locking element 320 is reliably secured to the body 310, the relative positions of the various components of the frame 30 are more stable, reducing vibration and noise caused by component loosening. This not only helps improve the vehicle's ride comfort but also extends the service life of the frame 30, as the stable structure reduces wear and damage caused by component loosening.

[0043] In some specific embodiments, the locking member 320 has a second step 3220 that abuts against the edge of the through hole 3310.

[0044] When the locking element 320 is installed in place, the second step 3220 will come into contact with the edge of the through hole 3310, forming an abutment relationship. This structural design allows the locking element 320 to achieve precise positioning and fixation during installation through the interaction between the second step 3220 and the edge of the through hole 3310.

[0045] One of the main functions of this design is to achieve precise positioning of the locking element 320. During the assembly of the frame 30, the locking element 320 needs to be accurately installed in the designated position to ensure that it can perform its locking function properly. By abutting the second step 3220 against the edge of the through hole 3310, the locking element 320 can be precisely positioned within the through hole 3310, avoiding assembly problems caused by positional deviations. For example, this positioning function is very important in some high-precision mechanical assemblies, as it ensures the fitting accuracy between various components, thereby improving the performance and reliability of the entire mechanical system.

[0046] In addition to its positioning function, the contact between the second step 3220 and the edge of the through hole 3310 also provides a certain degree of fixation. When the locking member 320 is in place, the tight contact between the second step 3220 and the edge of the through hole 3310 increases the friction between the locking member 320 and the frame 30 body 310, thus preventing the locking member 320 from loosening during use. This fixing effect is similar to a mechanical "clamping" mechanism, achieving stable fixation of the locking member 320 through the mutual constraint of physical structures. During vehicle operation, the frame 30 is subjected to various vibrations and impacts. Through the contact between the second step 3220 and the edge of the through hole 3310, the locking member 320 remains stable, preventing loosening from affecting the structural integrity and safety of the frame 30.

[0047] In some specific embodiments, the receiving cavity 3110 is further provided with a partition plate 3130, which is used to separate the multiple batteries 20.

[0048] To ensure the electric wheelchair's range, multiple batteries 20 can typically be placed within the receiving cavity 3110, separated by a partition 3130. The partition 3130 secures the batteries 20, preventing them from colliding with each other. It also provides sufficient space for heat dissipation, allowing the batteries 20 to cool down during charging and discharging, thus preventing overheating.

[0049] In some specific embodiments, a pressure plate 3340 is provided on the cover 330, and the pressure plate 3340 faces the battery 20 to fix the battery 20.

[0050] The battery 20 is typically equipped with a handle at its top for easy transport and movement. The handle is usually deformable and retractable, possessing a degree of flexibility. To prevent the battery 20 from bouncing due to bumps during the electric wheelchair's movement, a pressure plate 3340 on the cover 330 generally abuts against the handle, thus counteracting any bouncing caused by inertia. Furthermore, since the pressure plate 3340 abuts against the handle, it does not exert significant pressure on the battery 20's casing, which helps maintain the battery 20's stability and safety.

[0051] In some specific embodiments, please refer to Figure 5 and Figure 6 The cover 330 has a recessed area 3320, and the through hole 3310 is located in the recessed area 3320.

[0052] The recessed area 3320 keeps the through hole 3310 partially hidden, and the locking member 320 passing through the through hole 3310 is also partially hidden. When a foreign object touches the cover 330, the recessed area 3320 prevents the object from reaching the locking member 320 within it. In other words, the recessed area 3320 prevents the cover 330 from being accidentally opened.

[0053] In some specific embodiments, the receiving cavity 3110 is located at the rear end of the frame 30.

[0054] In this utility model application, the electric wheelchair moves forward and backward. Correspondingly, the front end of the frame 30 is closer to the direction of forward movement of the electric wheelchair, and the rear end of the frame 30 is closer to the direction of backward movement of the electric wheelchair. The receiving cavity 3110 is located at the rear end of the frame 30, and also behind the seat 40.

[0055] The battery 20 is relatively heavy, and placing it at the rear of the frame 30 lowers and positions the center of gravity of the electric wheelchair further back, preventing the electric wheelchair from tipping forward during sudden braking.

[0056] In some specific embodiments, a control unit 50 is also included, which is electrically connected to the battery 20 and the motor.

[0057] The control unit 50 is one of the core components of the electric wheelchair, responsible for receiving user commands and controlling the wheelchair's movement. The control unit 50 controls the motor's speed and steering via pulse width modulation (PWM) signals, thereby enabling the wheelchair to move forward, backward, and turn. The control unit 50 also includes a lighting control module and several display modules. The display modules primarily display parameters such as the battery level 20 or the electric wheelchair's speed status.

[0058] In some specific embodiments, the control unit 50 is located at the front end of the frame 30.

[0059] Positioning the control unit 50 at the front of the frame 30 facilitates user operation. Users can easily control the wheelchair's movement using joysticks, buttons, or other control devices without bending or stretching. This design is particularly suitable for users with mobility impairments, improving comfort and convenience. The front-end control unit 50's location allows users to visually see the control devices, reducing the possibility of misoperation. For example, joysticks are typically within the user's reach, allowing for easy adjustment of speed and direction. Electric wheelchairs used in rehabilitation centers or hospitals are often equipped with a front-end control unit 50 to meet the specific needs of rehabilitation training.

[0060] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An electric wheelchair, characterized in that, The device includes wheels, a motor, a frame, and a seat. The wheels are rotatably connected to the frame, the seat is positioned above the frame, and the motor is mounted on the frame and drives the wheels to rotate. The frame includes a body, a locking element, and a cover. The body forms a cavity for accommodating a battery, and the cover covers the opening of the cavity. The locking element is movably connected to the body. The cover has a through hole and an insertion portion. The body has an insertion port that matches the insertion portion. When the insertion portion is inserted into the insertion port, the insertion port prevents the cover from moving upward. When the locking element passes through the through hole, it prevents the cover from moving in the plane of the through hole.

2. The electric wheelchair as described in claim 1, characterized in that, The frame also includes an elastic element, the two ends of which are connected to the body and the locking element, respectively.

3. The electric wheelchair as described in claim 1, characterized in that, The body has a first limiting part, and the locking member has a first step. The first limiting part and the first step are adapted to prevent the locking member from dislodging from the body.

4. The electric wheelchair as described in claim 1, characterized in that, The locking element has a second step that abuts against the edge of the through hole.

5. The electric wheelchair as described in claim 1, characterized in that, The cavity is also provided with a partition plate, which is used to separate the multiple batteries.

6. The electric wheelchair as described in claim 1, characterized in that, The cover is provided with a pressure plate, which faces the battery to fix the battery in place.

7. The electric wheelchair as described in claim 1, characterized in that, The cover has a recessed area, and the through hole is located in the recessed area.

8. The electric wheelchair as described in claim 1, characterized in that, The receiving cavity is located at the rear end of the vehicle frame.

9. The electric wheelchair as described in claim 1, characterized in that, It also includes a control unit, which is electrically connected to the battery and the motor.

10. The electric wheelchair as described in claim 9, characterized in that, The control unit is located at the front end of the vehicle frame.

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