Automatic anti-collision device for electric wheelchair

Abstract

The utility model discloses an electric wheelchair automatic anti-collision device which comprises an electric wheelchair body, the electric wheelchair body comprises an armrest frame, a backrest plate and a supporting frame, the side surface of the armrest frame is fixedly connected with an armrest block, and the upper surface of the armrest block is movably connected with a control box. A first obstacle sensor is movably connected to the front surface of the control box, an L-shaped clamping plate is fixedly connected to the rear surface of the backrest plate, a connecting plate is movably connected to the side inner wall of the L-shaped clamping plate, and a second obstacle sensor is fixedly connected to the side surface of the connecting plate. The obstacle sensor I, the obstacle sensor II, the controller, the power supply box and the control box are matched, so that the device can sense obstacles when advancing or retreating, further the controller analyzes the obstacles, the device is controlled to reduce the gear and stop, and the device is prevented from being damaged. Personnel injury or device damage caused by collision of the device is avoided, and the safety performance of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of wheelchair, specifically relates to an automatic anti -collision device of electric wheelchair. BACKGROUND

[0002] Electric wheelchair is a kind of auxiliary traffic tool designed for the action obstacle person, it is driven by electric power, makes the old, the disabled and the temporary action inconvenient person provide a kind of safe, convenient travel mode.

[0003] The existing electric wheelchair is provided with first anti-collision plate and second anti-collision plate, so that the first anti-collision plate and the second anti-collision plate can absorb energy and buffer when the device is impacted, thereby greatly reducing the impact on the electric wheelchair and the user when the electric wheelchair and the user are impacted, and the device stops when impacted by using a touch switch, thereby improving the service life and safety of the device. However, the device lacks sensing of obstacles before impact, so the device stops only after being impacted, the user can still be impacted, the safety of the device is low, the service life of the device is reduced due to frequent impact, and after searching, it is found that the technical solution provided in application No. 202223464170.4 also has the above problems. SUMMARY

[0004] The utility model solves the technical problem that the existing electric wheelchair can only stop after being impacted during use, causing the user to still be impacted and reducing the service life of the device.

[0005] To solve the above technical problems, the utility model adopts one technical scheme, which provides an automatic anti-collision device for an electric wheelchair, including an electric wheelchair body, the electric wheelchair body includes a handrail frame, a backrest plate and a support frame, the side surface of the handrail frame is fixedly connected with a handrail block, the upper surface of the handrail block is movably connected with a control box, the front surface of the control box is movably connected with an obstacle sensor one, the rear surface of the backrest plate is fixedly connected with an L-shaped clamping plate, the side inner wall of the L-shaped clamping plate is movably connected with a connecting plate, the side surface of the connecting plate is fixedly connected with an obstacle sensor two, the lower surface of the electric wheelchair body is provided with a power source box body, and the front surface of the power source box body is fixedly connected with a controller.

[0006] Through the above technical scheme, the obstacle sensor one and the obstacle sensor two can detect obstacles in all directions when the device moves forward or backward, and when obstacles are detected, information is transmitted to the controller, the controller automatically controls the device to reduce gear and start the braking system to control the device to stop, thereby avoiding device impact and causing personal injury or device damage, effectively improving the service life of the device and reducing maintenance.

[0007] The upper surface of the handrail block is provided with a sliding groove, the sliding groove is internally connected with a sliding block in a sliding mode, and the upper surface of the sliding block is fixedly connected with the control box.

[0008] Through the above technical scheme, the sliding block slides in the sliding groove, the position of the control box can be adjusted, the position of the control box can be adjusted to a comfortable position when patients with different arm lengths use the device, and the use practicality of the device is improved.

[0009] The side surface of the obstacle sensor one is fixedly connected with a mounting block, the front surface of the mounting block is threadedly connected with a bolt, and the side surface of the bolt is threadedly connected with the control box.

[0010] Through the above technical scheme, the bolt can be mounted on the control box.

[0011] The side surface of the L-shaped clamping plate is threadedly connected with a screw, and the side surface of the screw is threadedly connected with the connecting plate.

[0012] Through the above technical scheme, the screw can connect the connecting plate and the L-shaped clamping groove together.

[0013] The inside of the power source box body is provided with a storage battery, a motor and a braking system, the controller is electrically connected with the storage battery, the motor, the braking system, the obstacle sensor one and the obstacle sensor two, and the control box is electrically connected with the storage battery.

[0014] Through the above technical scheme, the storage battery provides power for the whole device, and the motor provides power for the walking of the device.

[0015] The upper surface of the control box is provided with an electric quantity display module, the side surface of the control box is provided with a switch button, the upper surface of the control box is provided with a gear increasing button, the upper surface of the control box is provided with a gear reducing button, and the upper surface of the control box is provided with a remote lever.

[0016] The side surface of the electric wheelchair body is provided with a manual brake device, and the side surface of the supporting frame is fixedly connected with a foot pedal sleeve.

[0017] One end of the supporting frame is fixedly connected with an emergency stop button, one end of the supporting frame is fixedly connected with a spring, the end, away from the supporting frame, of the spring is fixedly connected with an impact buffer rod, the side surface of the impact buffer rod is movably connected with the foot pedal sleeve, and the emergency stop button is electrically connected with the braking system.

[0018] By the above technical scheme, when the obstacle sensor one fails to identify the obstacle, the device hits the obstacle first, and the impact buffer rod is displaced towards the support frame, the spring is contracted, the impact buffer rod extrudes the emergency stop button, the emergency stop button is pressed down, the braking system control device is stopped, and the device is prevented from being hit, bouncing and being hit again.

[0019] The electric wheelchair automatic anti-collision device has the following beneficial effects:

[0020] (1) The obstacle sensor one, the obstacle sensor two, the controller, the power source box and the control box are matched, so that the device can sense the obstacle when advancing or retreating, the controller analyzes the obstacle, the device is controlled to reduce the gear and stop, the device is prevented from being hit to cause personnel injury or device damage, and the safety performance of the device is improved.

[0021] (2) The support frame, the foot pedal sleeve, the emergency stop button, the spring and the impact buffer rod are matched, so that the device is still stopped when the obstacle sensor one fails, and the device is prevented from being hit, bouncing and being hit again. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a first perspective view of the electric wheelchair automatic anti-collision device of the utility model;

[0023] Figure 2 is a second perspective view of the electric wheelchair automatic anti-collision device of the utility model;

[0024] Figure 3 is an explosion view of part of the electric wheelchair automatic anti-collision device of the utility model;

[0025] Figure 4 is another explosion view of part of the electric wheelchair automatic anti-collision device of the utility model;

[0026] Figure 5 is a sectional view of the foot pedal sleeve of the electric wheelchair automatic anti-collision device of the utility model.

[0027] Reference signs: 1, electric wheelchair body; 2, armrest frame; 3, power source box body; 4, controller; 5, armrest block; 6, sliding groove; 7, sliding block; 8, control box; 9, obstacle sensor one; 10, mounting block; 11, bolt; 12, backrest plate; 13, L-shaped clamping plate; 14, connecting plate; 15, obstacle sensor two; 16, screw; 17, electric quantity display module; 18, switch button; 19, remote lever; 20, gear increasing button; 21, gear reducing button; 22, manual brake device; 23, support frame; 24, foot pedal sleeve; 25, emergency stop button; 26, spring; 27, impact buffer rod. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will combine with the drawings and examples to make further detailed description of the utility model. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0029] As Figures 1-5 shown, the automatic anti-collision device of the electric wheelchair of the embodiment, including electric wheelchair body 1, electric wheelchair body 1 includes armrest frame 2, backrest plate 12 and support frame 23, the side surface of armrest frame 2 is fixedly connected with armrest block 5, the upper surface of armrest block 5 is provided with sliding groove 6, the inside of sliding groove 6 is slidably connected with sliding block 7, the displacement of sliding block 7 in sliding groove 6 can drive the movement of installed control box 8, in turn make the patient with different arm length can move control box 8 to the comfortable position, the upper surface of sliding block 7 is fixedly connected with control box 8, the upper surface of armrest block 5 is movably connected with control box 8, the front surface of control box 8 is movably connected with obstacle sensor one 9, obstacle sensor one 9 can identify the obstacle in front of the device, and the result is transmitted to controller 4, make controller 4 automatically control device to reduce the brake system control device stop and start to avoid the device to be impacted, improve the safety performance of the device and can reduce maintenance and improve the service life of the device, the side surface of obstacle sensor one 9 is fixedly connected with mounting block 10, the front surface of mounting block 10 is screw-connected with bolt 11, the side surface of bolt 11 is screw-connected with control box 8, through bolt 11 can make obstacle sensor one 9 be installed on control box 8 and make it can be disassembled.

[0030] The rear surface of the back plate 12 is fixedly connected with an L-shaped clamping plate 13, the inner wall of the L-shaped clamping plate 13 is movably connected with a connecting plate 14, the side surface of the connecting plate 14 is fixedly connected with an obstacle sensor two 15, the obstacle sensor two 15 can identify the obstacle behind the device when the device retreats, and transmit the result to the controller 4, so that the controller 4 automatically controls the device to reduce the gear and start the brake system control device to stop, avoiding the device from being hit, the side surface of the L-shaped clamping plate 13 is screwedly connected with a screw 16, the side surface of the screw 16 is screwedly connected with the connecting plate 14, the lower surface of the electric wheelchair body 1 is provided with a power source box 3, the front surface of the power source box 3 is fixedly connected with a controller 4, the inside of the power source box 3 is provided with a battery, a motor and a brake system, the battery provides power for the device, the connection between the battery, the motor, the controller 4 and the control box 8 is prior art, which is known to those skilled in the art, the controller 4 is electrically connected with the battery, the motor, the brake system, the obstacle sensor one 9 and the obstacle sensor two 15, the control box 8 is electrically connected with the battery, the upper surface of the control box 8 is provided with a power display module 17, the side surface of the control box 8 is provided with a switch button 18, the upper surface of the control box 8 is provided with a gear increasing button 20, the upper surface of the control box 8 is provided with a gear reducing button 21, the upper surface of the control box 8 is provided with a remote lever 19, the side surface of the electric wheelchair body 1 is provided with a manual brake device 22, the side surface of the support frame 23 is fixedly connected with a foot pedal sleeve 24, one end of the support frame 23 is fixedly connected with an emergency stop button 25, one end of the support frame 23 is fixedly connected with a spring 26, the end, away from the support frame 23, of the spring 26 is fixedly connected with an impact buffer rod 27, the side surface of the impact buffer rod 27 is movably connected with the foot pedal sleeve 24, the emergency stop button 25 is electrically connected with the brake system, when the obstacle sensor one 9 is damaged and cannot identify, the impact buffer rod 27 presses the emergency stop button 25 when the device hits the obstacle, so that the device stops, avoiding the device from bouncing back and being hit again.

[0031] The working principle of the utility model is as follows: when the device is used, the patient sits on the surface of the electric wheelchair body 1, leans against the backrest plate 12, presses the switch button 18 on the side surface of the control box 8 to make the battery in the power source box body 3 supply power to the device, adjusts the gear of the device through the add gear button 20 and the reduce gear button 21, controls the forward movement and steering of the device through the remote lever 19, when the device moves forward, the obstacle sensor 1 9 senses the obstacle, transmits the information to the controller 4, the controller 4 automatically controls the reduce gear button 21 on the control box 8 to slow down the device, starts the brake system of the device to automatically stop the device, avoids the device from colliding with the obstacle and causing the user to be injured, when the device moves backward, the obstacle sensor 2 15 senses the obstacle, transmits the information to the controller 4, the controller 4 automatically controls the reduce gear button 21 on the control box 8 to slow down the device, starts the brake system of the device to automatically stop the device, avoids the device from colliding with the obstacle and causing the user to be injured.

[0032] The above is only the embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation using the content of the utility model specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.

Claims

1. An automatic anti-collision device for electrically powered wheelchair, comprising an electrically powered wheelchair body (1), characterized in that: The electric wheelchair body (1) includes armrest frame (2), backrest plate (12) and support frame (23), the side surface of armrest frame (2) is fixedly connected with armrest block (5), the upper surface of armrest block (5) is movably connected with control box (8), the front surface of control box (8) is movably connected with obstacle sensor one (9), the rear surface of backrest plate (12) is fixedly connected with L type card plate (13), the side inner wall of L type card plate (13) is movably connected with connecting plate (14), the side surface of connecting plate (14) is fixedly connected with obstacle sensor two (15), the lower surface of electric wheelchair body (1) is provided with power source box (3), the front surface of power source box (3) is fixedly connected with controller (4).

2. An automatic collision avoidance device for an electrically powered wheelchair according to claim 1, wherein The upper surface of the armrest block (5) is provided with a chute (6), the inside of the chute (6) is slidably connected with a sliding block (7), the upper surface of the sliding block (7) is fixedly connected with the control box (8).

3. An automatic collision avoidance device for an electrically powered wheelchair vehicle as defined in claim 1, wherein The side surface of the obstacle sensor one (9) is fixedly connected with the mounting block (10), the front surface of the mounting block (10) is threadedly connected with the bolt (11), the side surface of the bolt (11) is threadedly connected with the control box (8).

4. The automatic collision avoidance device for electrically powered wheelchair according to claim 1, wherein The side surface of the L type card plate (13) is threadedly connected with the screw (16), the side surface of the screw (16) is threadedly connected with the connecting plate (14).

5. An automatic collision avoidance device for an electrically powered wheelchair vehicle as defined in claim 1, wherein The inside of the power source box (3) is provided with a battery, a motor and a brake system, the controller (4) and the battery, the motor, the brake system, the obstacle sensor one (9) and the obstacle sensor two (15) are electrically connected, and the control box (8) is electrically connected with the battery.

6. An automatic collision avoidance device for electrically powered wheelchair vehicles as defined in claim 1, wherein The upper surface of the control box (8) is provided with an electric quantity display module (17), the side surface of the control box (8) is provided with a switch button (18), the upper surface of the control box (8) is provided with a plus gear button (20), the upper surface of the control box (8) is provided with a minus gear button (21), and the upper surface of the control box (8) is provided with a remote lever (19).

7. An automatic collision avoidance device for electrically powered wheelchair vehicles as defined in claim 1, wherein The side surface of the electric wheelchair body (1) is provided with a manual brake device (22), and the side surface of the support frame (23) is fixedly connected with a foot pedal sleeve (24).

8. An automatic collision avoidance device for a motorized wheelchair vehicle as defined in claim 7, wherein One end of the support frame (23) is fixedly connected with an emergency stop button (25), one end of the support frame (23) is fixedly connected with a spring (26), the end of the spring (26) away from the support frame (23) is fixedly connected with an impact buffer rod (27), the side surface of the impact buffer rod (27) is movably connected with the foot pedal sleeve (24), and the emergency stop button (25) is electrically connected with the brake system.

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