Dual function composite handle for electric wheelchair

Abstract

The utility model relates to electric wheelchair handle field discloses a dual -functional composite handle of electric wheelchair, including assembly mechanism, the assembly mechanism includes assembly box, one side fixedly connected with servo motor at assembly box front end outer wall, the output of servo motor extends to the inside of assembly box and is fixedly connected with one way screw rod, the outer wall of one way screw rod is equipped with one way sliding block, the upper surface fixedly connected with mounting panel of one way sliding block, the middle part fixedly connected with the mounting frame of mounting panel rear end outer wall, the inner wall fixedly connected with elastic dust cloth of mounting frame. In the utility model, through servo motor relevant structure is driven and makes multifunctional keyboard to go up and down, when not using, the mounting frame and elastic dust cloth are located multifunctional keyboard upper portion, can effectively reduce the failure probability that the key is out of order, contact failure etc. because of dust into the key gap.

Description

Technical Field

[0001] This utility model relates to the field of electric wheelchair handles, and more particularly to a dual-function composite handle for electric wheelchairs. Background Technology

[0002] With the increasing aging of the global population and the growing number of people with mobility impairments due to various reasons, the demand for electric wheelchairs is constantly rising. People with mobility impairments need more convenient, efficient, and safe travel assistance tools, and electric wheelchairs have become key equipment for them to improve their self-care ability and participate in social activities. This has prompted continuous improvement in the control methods of electric wheelchairs, leading to the development of multi-functional handles. Multi-functional handles can meet the forward, backward, and steering functions of electric wheelchairs. At the same time, multi-functional buttons can also adjust the seat height, seat angle, backrest angle, and armrest height, thus bringing convenience to people's use.

[0003] Existing electric wheelchairs have issues with their multi-function keypads, such as dust entering the key gaps, causing key malfunctions and poor contact. There is also a potential safety hazard of accidental key presses.

[0004] Therefore, in order to solve the problems existing in the above-mentioned technology, those skilled in the art have proposed a dual-function composite handle for electric wheelchairs. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a dual-function composite handle for an electric wheelchair. A servo motor drives a related structure to raise and lower the multi-function keypad. When not in use, the mounting frame and elastic dust cover are located on the upper part of the keypad, effectively reducing the probability of key malfunctions or poor contact caused by dust entering the key gaps. Simultaneously, the mounting frame and elastic dust cover, positioned at the top, act as a physical barrier, reducing the possibility of accidental key touches and improving safety and reliability.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A dual-function composite handle for an electric wheelchair includes an assembly mechanism. The assembly mechanism includes an assembly box. A servo motor is fixedly connected to one side of the front outer wall of the assembly box. The output end of the servo motor extends into the interior of the assembly box and is fixedly connected to a one-way screw. A one-way slider is sleeved on the outer wall of the one-way screw. A mounting plate is fixedly connected to the upper surface of the one-way slider. A mounting frame is fixedly connected to the middle of the rear outer wall of the mounting plate. An elastic dust cover is fixedly connected to the inner wall of the mounting frame.

[0008] The rear end of the assembly box is provided with a lifting mechanism. The lifting mechanism includes a lifting frame fixedly connected to the inner bottom surface of the rear end of the assembly box. A lifting toothed plate is provided through the other side of the upper part of the lifting frame. A guide plate is slidably connected to one side of the upper part of the lifting frame. An intermediate plate is fixedly connected to the upper surface of both the lifting toothed plate and the guide plate.

[0009] The lower end of the lifting mechanism is provided with a lifting drive mechanism. The lifting drive mechanism includes an L-shaped plate fixedly connected to the front end of the lower surface of the mounting plate. Multiple adjusting teeth are fixedly connected to the upper part of the rear end of the L-shaped plate. An active toothed roller is rotatably connected to the middle part of the lifting frame near the front outer wall. The multiple adjusting teeth mesh with the active toothed roller. A first bevel gear is fixedly connected to the other side of the active toothed roller. A driven toothed roller is rotatably connected to the other side of the inner top of the lifting frame. The lifting toothed plate meshes with the driven toothed roller. A second bevel gear is fixedly connected to the outer wall of the front end of the driven toothed roller. The first bevel gear meshes with the second bevel gear.

[0010] The above technical solution uses a servo motor to drive the related structure to raise and lower the multi-function keyboard. When not in use, the mounting frame and elastic dust cover are located on the upper part of the multi-function keyboard, which can effectively reduce the probability of key failures, poor contact, and other malfunctions caused by dust entering the key gaps.

[0011] Furthermore, the rear end of the one-way screw is rotatably connected to the inner wall on one side of the rear end of the assembly box, and a fixing plate is fixedly connected to the lower surface of the assembly box;

[0012] The above technical solution ensures the stability of the rotation of the unidirectional screw by its rotating connection at the rear end, allowing the unidirectional slider to move smoothly. The fixing plate facilitates the secure mounting of the entire dual-function composite handle onto the electric wheelchair.

[0013] Furthermore, a guide rod is fixedly connected to the other side of the inner wall of the assembly box, and a guide seat is slidably connected to the outer wall of the guide rod. The upper surface of the guide seat is fixedly connected to the lower surface of the mounting plate.

[0014] Through the above technical solution, the cooperation between the guide rod and the guide seat provides guidance for the movement of the mounting plate, making the mounting plate more stable during the back-and-forth movement and avoiding shaking or deviation.

[0015] Furthermore, limiting grooves are provided on both sides of the upper rear end of the inner wall of the assembly box, and the two sides of the mounting frame slide inside the limiting grooves;

[0016] Through the above technical solution, the limiting groove plays a role in limiting and guiding the mounting frame, ensuring that the mounting frame slides along the predetermined trajectory when it moves with the mounting plate, thus ensuring the normal extension and contraction of the elastic dust cover, and also enhancing the stability of the overall structure.

[0017] Furthermore, both the lifting tooth plate and the guide plate are slidably connected to limit plates, and the lower surfaces of the limit plates are fixedly connected to the inner bottom surface of the assembly box.

[0018] Through the above technical solution, the limiting plate restricts the movement direction of the lifting tooth plate and the guide plate, so that they can only rise and fall in the vertical direction, ensuring the stability and accuracy of the middle plate's lifting process and avoiding tilting or shaking.

[0019] Furthermore, the active toothed roller is located at the upper end of the adjusting teeth and the L-shaped plate;

[0020] Through the above technical solution, this positioning allows the adjusting teeth and the active toothed roller to mesh effectively, ensuring the stability and reliability of power transmission, enabling the lifting drive mechanism to work normally, and realizing the lifting of the toothed plate.

[0021] Furthermore, a control grip is bolted to the upper surface of the mounting plate.

[0022] Furthermore, a multi-functional keyboard is provided on the upper surface of the intermediate plate.

[0023] This utility model has the following beneficial effects:

[0024] 1. The present invention proposes a dual-function composite handle for an electric wheelchair. A servo motor drives the related structure to raise and lower the multi-function keypad. When not in use, the mounting frame and elastic dust cover are located on the upper part of the multi-function keypad, which can effectively reduce the probability of key failure, poor contact, and other malfunctions caused by dust entering the key gaps.

[0025] 2. The present invention proposes a dual-function composite handle for an electric wheelchair. The mounting frame and elastic dust cover are located at the top, which can act as a physical barrier, reducing the possibility of accidental button touches and improving the safety and reliability of use. Attached Figure Description

[0026] Figure 1 An isometric view of a dual-function composite handle for an electric wheelchair proposed in this utility model;

[0027] Figure 2 This is a partial cross-sectional view of a dual-function composite handle for an electric wheelchair proposed in this utility model.

[0028] Figure 3 This is a schematic diagram of the assembly mechanism in the dual-function composite handle of an electric wheelchair proposed in this utility model.

[0029] Figure 4This is a bottom view of the lifting mechanism and lifting drive mechanism in the dual-function composite handle of an electric wheelchair proposed in this utility model.

[0030] Figure 5 This is a front view schematic diagram of the lifting mechanism and lifting drive mechanism in the dual-function composite handle of an electric wheelchair proposed in this utility model.

[0031] Figure 6 This is a cross-sectional view of the lifting mechanism and lifting drive mechanism in the dual-function composite handle of an electric wheelchair proposed in this utility model.

[0032] Legend:

[0033] 1. Assembly mechanism; 101. Assembly box; 102. Servo motor; 103. One-way screw; 104. One-way slider; 105. Mounting plate; 106. Guide rod; 107. Guide seat; 108. Fixing plate; 109. Limiting groove; 110. Mounting frame; 111. Elastic dust cover;

[0034] 2. Lifting mechanism; 201. Lifting frame; 202. Lifting toothed plate; 203. Guide plate; 204. Limiting plate; 205. Intermediate plate;

[0035] 3. Lifting drive mechanism; 301. L-shaped plate; 302. Adjusting gear; 303. Driving gear roller; 304. First bevel gear; 305. Driven gear roller; 306. Second bevel gear;

[0036] 4. Control the grip;

[0037] 5. Multi-function keyboard. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Reference Figure 1 , Figure 2 and Figure 3 One embodiment provided by this utility model:

[0040] A dual-function composite handle for an electric wheelchair includes an assembly mechanism 1. The assembly mechanism 1 includes an assembly box 101. A servo motor 102 is fixedly connected to one side of the outer wall of the front end of the assembly box 101. The output end of the servo motor 102 extends into the interior of the assembly box 101 and is fixedly connected to a one-way screw 103. A one-way slider 104 is sleeved on the outer wall of the one-way screw 103. A mounting plate 105 is fixedly connected to the upper surface of the one-way slider 104. A mounting frame 110 is fixedly connected to the middle of the outer wall of the rear end of the mounting plate 105. An elastic dust cover 111 is fixedly connected to the inner wall of the inner wall of the rear end of the mounting frame 110. The rear end of the one-way screw 103 is rotatably connected to the inner wall of the rear end of the assembly box 101. A fixing plate 108 is fixedly connected to the lower surface of the assembly box 101. The rotatable connection of the rear end of the one-way screw 103 ensures the stability of its rotation, allowing the one-way slider 104 to move smoothly. The fixing plate 108 facilitates the fixed installation of the entire dual-function composite handle on the electric wheelchair. A guide rod 106 is fixedly connected to the other side of the inner wall of the assembly box 101. A guide seat 107 is slidably connected to the outer wall of the guide rod 106. The upper surface of the guide seat 107 is fixedly connected to the lower surface of the mounting plate 105. The cooperation between the guide rod 106 and the guide seat 107 provides guidance for the movement of the mounting plate 105, making the mounting plate 105 more stable during the back-and-forth movement and avoiding wobbling or deviation. Limiting grooves 109 are opened on both sides of the upper rear end of the inner wall of the assembly box 101. The two sides of the mounting frame 110 slide inside the limiting grooves 109. The limiting grooves 109 limit and guide the mounting frame 110, ensuring that the mounting frame 110 slides along a predetermined trajectory when moving with the mounting plate 105, ensuring the normal extension and contraction of the elastic dust cover 111, and also enhancing the stability of the overall structure.

[0041] Reference Figure 4 , Figure 5 and Figure 6 The assembly box 101 has a lifting mechanism 2 at its rear end. The lifting mechanism 2 includes a lifting frame 201 fixedly connected to the inner bottom surface of the rear end of the assembly box 101. A lifting toothed plate 202 is provided through the other side of the upper part of the lifting frame 201. A guide plate 203 is slidably connected to one side of the upper part of the lifting frame 201. An intermediate plate 205 is fixedly connected to the upper surface of both the lifting toothed plate 202 and the guide plate 203. A limit plate 204 is slidably connected inside both the lifting toothed plate 202 and the guide plate 203. The lower surface of the limit plate 204 is fixedly connected to the inner bottom surface of the assembly box 101. The limit plate 204 restricts the movement direction of the lifting toothed plate 202 and the guide plate 203, so that they can only rise and fall in the vertical direction, ensuring the stability and accuracy of the lifting process of the intermediate plate 205 and avoiding tilting or shaking.

[0042] Reference Figure 4 , Figure 5 and Figure 6The lower end of the lifting mechanism 2 is provided with a lifting drive mechanism 3. The lifting drive mechanism 3 includes an L-shaped plate 301 fixedly connected to the front end of the lower surface of the mounting plate 105. Multiple adjusting teeth 302 are fixedly connected to the upper part of the rear end of the L-shaped plate 301. A drive toothed roller 303 is rotatably connected to the middle part of the lifting frame 201 near the front outer wall. The multiple adjusting teeth 302 mesh with the drive toothed roller 303. A first bevel gear 304 is fixedly connected to the other side of the drive toothed roller 303. A driven toothed roller 305 is rotatably connected to the other side of the inner top of the lifting frame 201. The lifting toothed plate 202 meshes with the driven toothed roller 305. A second bevel tooth is fixedly connected to the outer wall of the front end of the driven toothed roller 305. Wheel 306, first bevel gear 304 and second bevel gear 306 mesh with each other, drive gear roller 303 is located at the upper end of adjustment tooth 302 and L-shaped plate 301. This position setting allows adjustment tooth 302 and drive gear roller 303 to mesh effectively, ensuring the stability and reliability of power transmission, enabling the lifting drive mechanism 3 to work normally, realizing the lifting of tooth plate 202. The servo motor 102 drives the related structure to lift the multi-function keypad 5. When not in use, the mounting frame 110 and elastic dust cover 111 are located on the upper part of the multi-function keypad 5, which can effectively reduce the probability of key failure, poor contact and other faults caused by dust entering the key gaps.

[0043] Working principle: When the seat height, backrest angle, or armrest height of the electric wheelchair needs to be adjusted via the multi-function keypad 5, the servo motor 102 drives the one-way screw 103 to rotate, causing the mounting plate 105 to move forward. The L-shaped plate 301 at the front end of the lower surface of the mounting plate 105 moves forward accordingly. The adjusting teeth 302 at the upper rear end of the L-shaped plate 301 mesh with the active toothed roller 303, causing the active toothed roller 303 to rotate. When the active toothed roller 303 rotates, the first bevel gear 304 on its upper part rotates accordingly. Through meshing with the second bevel gear 306, it drives the driven toothed roller 305 to rotate. The driven toothed roller 305 meshes with the lifting toothed plate 202, causing the lifting toothed plate 202 to move upward within the lifting frame 201. The guide plate 203 moves synchronously, thereby causing the middle plate 205 and the multi-function keypad 5 on the middle plate 205 to rise. At this time, the multi-function keypad 5 has moved from inside the assembly box 101. The bottom is raised to the top of the assembly box 101. Simultaneously, as the mounting plate 105 moves forward, the mounting frame 110 also moves the elastic dust cover 111 synchronously, ensuring that normal operation of the multi-function keypad 5 is not affected. When the electric seat is adjusted, the servo motor 102 reverses, and following the opposite transmission process, the multi-function keypad 5 descends. During this descent, the mounting frame 110 returns the elastic dust cover 111 to its original position. At this point, the mounting frame 110 and the elastic dust cover 111 are positioned above the multi-function keypad 5, reducing the probability of key malfunctions or poor contact caused by dust entering the key gaps, thus extending the lifespan of the multi-function keypad 5. Furthermore, the mounting frame 110 and the elastic dust cover 111, positioned at the top, act as a physical barrier, reducing the possibility of accidental key presses and improving safety and reliability.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dual-function composite handle for an electric wheelchair, comprising an assembly mechanism (1), characterized in that: The assembly mechanism (1) includes an assembly box (101). A servo motor (102) is fixedly connected to one side of the front outer wall of the assembly box (101). The output end of the servo motor (102) extends into the interior of the assembly box (101) and is fixedly connected to a one-way screw (103). A one-way slider (104) is sleeved on the outer wall of the one-way screw (103). An mounting plate (105) is fixedly connected to the upper surface of the one-way slider (104). An mounting frame (110) is fixedly connected to the middle of the rear outer wall of the mounting plate (105). An elastic dust cover (111) is fixedly connected to the inner wall of the mounting frame (110). The assembly box (101) is provided with a lifting mechanism (2) at its rear end. The lifting mechanism (2) includes a lifting frame (201) fixedly connected to the inner bottom surface of the rear end of the assembly box (101). A lifting toothed plate (202) is provided through the other side of the upper part of the lifting frame (201). A guide plate (203) is slidably connected to one side of the upper part of the lifting frame (201). An intermediate plate (205) is fixedly connected to the upper surface of both the lifting toothed plate (202) and the guide plate (203). The lower end of the lifting mechanism (2) is provided with a lifting drive mechanism (3). The lifting drive mechanism (3) includes an L-shaped plate (301) fixedly connected to the front end of the lower surface of the mounting plate (105). Multiple adjusting teeth (302) are fixedly connected to the upper part of the rear end of the L-shaped plate (301). An active toothed roller (303) is rotatably connected to the middle part of the lifting frame (201) near the front outer wall. The multiple adjusting teeth (302) and the active toothed roller (303) are connected to each other. The first bevel gear (304) is fixedly connected to the other side of the active toothed roller (303), and the driven toothed roller (305) is rotatably connected to the other side of the top of the lifting frame (201). The lifting toothed plate (202) meshes with the driven toothed roller (305). The outer wall of the front end of the driven toothed roller (305) is fixedly connected to the second bevel gear (306), and the first bevel gear (304) meshes with the second bevel gear (306).

2. The dual-function composite handle for an electric wheelchair according to claim 1, characterized in that: The rear end of the one-way screw (103) is rotatably connected to the inner wall of the rear end side of the assembly box (101), and a fixing plate (108) is fixedly connected to the lower surface of the assembly box (101).

3. The dual-function composite handle for an electric wheelchair according to claim 1, characterized in that: A guide rod (106) is fixedly connected to the other side of the inner wall of the assembly box (101). A guide seat (107) is slidably connected to the outer wall of the guide rod (106). The upper surface of the guide seat (107) is fixedly connected to the lower surface of the mounting plate (105).

4. The dual-function composite handle for an electric wheelchair according to claim 1, characterized in that: Limiting grooves (109) are provided on both sides of the upper rear end of the inner wall of the assembly box (101), and the two sides of the mounting frame (110) slide inside the limiting grooves (109).

5. The dual-function composite handle for an electric wheelchair according to claim 1, characterized in that: The lifting toothed plate (202) and the guide plate (203) are both slidably connected to the limiting plate (204), and the lower surface of the limiting plate (204) is fixedly connected to the inner bottom surface of the assembly box (101).

6. The dual-function composite handle for an electric wheelchair according to claim 1, characterized in that: The active toothed roller (303) is located at the upper end of the adjusting tooth (302) and the L-shaped plate (301).

7. The dual-function composite handle for an electric wheelchair according to claim 1, characterized in that: The upper surface of the mounting plate (105) is bolted with a control grip (4).

8. The dual-function composite handle for an electric wheelchair according to claim 1, characterized in that: The upper surface of the intermediate plate (205) is provided with a multi-function keypad (5).

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