Speed reducer with manual clutch for electric vehicle seat

Abstract

The utility model relates to the technical field of electric vehicle seats, and discloses an electric vehicle seat speed reducer with a manual clutch, which comprises a motor, a brake and a gear box, the outer surface of the motor is fixedly provided with a protective box, the output shaft of the motor is fixedly provided with a bevel gear I, the inner surface of the gear box is rotatably provided with a transmission shaft, and the transmission shaft is fixedly provided with a bevel gear II. And a bevel gear II and an outer gear are fixedly mounted on the outer surface of the transmission shaft. According to the speed reducer with the manual clutch for the electric vehicle seat, when a vehicle needs to be pushed manually, a push rod is engaged into a clutch cutting gear, a spring pin on a clutch shaft rotates along with the push rod, a clutch push handle is pushed upwards, at the moment, an inner gear on a transmission shaft II moves upwards along with the push rod, and the inner gear and an outer gear on the transmission shaft II are disconnected originally; at the moment, idling of the wheels of the second transmission shaft can be achieved, a vehicle seat can be easily pushed, and when the push rod is engaged into the clutch-in gear, the first spring and the second spring can restore the clutch push handle and the inner gear to the original positions.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle seat technology, specifically a speed reducer for an electric vehicle seat with a manual clutch. Background Technology

[0002] With the advancement of technology and the improvement of people's living standards, electric chairs have been increasingly widely used in various fields. They are used to help patients with limited mobility to move and undergo rehabilitation training. Some special workplaces require operators to use electric chairs for tasks such as material handling and equipment inspection. In daily life scenarios, they are also used to assist the elderly in traveling and in special vehicles in some leisure and entertainment venues. However, in general special scenarios, electric chairs need to be switched to manual operation.

[0003] Traditional electric chairs use speed reducers that can switch between manual and automatic modes. However, when the battery is low or manual pushing is required, a brake release function is usually added to the brake so that the wheels can turn. This is because the brake is connected to the motor, and the motor is connected to the gearbox. Therefore, even if the chair can be pushed, there will be some resistance. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a reducer for an electric chair with a manual clutch. It can effectively solve the problem that although the existing technology can realize the switching between manual and automatic modes, when encountering a power outage or needing to push manually, a brake release function is usually added to the brake so that the wheel can rotate. Because the brake is connected to the motor, and the motor is connected to the gearbox, even if it can be pushed, there will be a certain resistance.

[0005] The technical solution adopted by this utility model is: a reducer for an electric vehicle seat with a manual clutch, including a motor, a brake, and a gearbox. A protective box is fixedly installed on the outer surface of the motor. A bevel gear one is fixedly installed on the output shaft of the motor. A transmission shaft is rotatably installed on the inner surface of the gearbox. A bevel gear two and an external gear are fixedly installed on the outer surface of the transmission shaft. A transmission shaft two is rotatably installed on the inner surface of the gearbox. An internal gear is fixedly installed at one end of the transmission shaft two located inside the gearbox. A wheel mounting flange is fixedly installed at one end of the transmission shaft two located outside the gearbox. A clutch shaft is rotatably installed on the inner surface of the gearbox. A spring two, a clutch pusher, and a spring pin are provided on the inner surface of the clutch shaft of the gearbox.

[0006] Preferably, a first connecting wire is provided on the outer surface of the motor, and a second connecting wire is provided on the outer surface of the protective box, wherein the second connecting wire is electrically connected to the brake.

[0007] The above technical solution, through the design of connecting wire one and connecting wire two, facilitates accurate installation, reduces the probability of wiring errors during assembly, improves production efficiency, and ensures that the electric connection with the brake can guarantee that the brake can respond accurately to commands when the motor is running, thereby achieving rapid braking of the motor.

[0008] Preferably, a brake is fixedly installed on the inner surface of the protective box, and the brake is adapted to the motor.

[0009] Through the above technical solution, the protective box provides physical protection for the brake, preventing the intrusion of external dust, moisture, and other impurities, extending the brake's service life, and reducing malfunctions caused by environmental factors. The brake is compatible with the motor, enabling precise and rapid braking, and improving the electric chair's emergency handling capabilities in complex usage scenarios.

[0010] Preferably, the first bevel gear and the second bevel gear are meshed, and the external gear and the internal gear are meshed.

[0011] The above technical solution, through the meshing connection of gears, can transmit power efficiently and stably. Compared with other transmission methods, it has low energy loss, ensuring that the power output of the motor can be transmitted to the wheel mounting flange with high efficiency, driving the electric chair to run smoothly, reducing the phenomenon of jamming and shaking during power transmission, and improving riding comfort.

[0012] Preferably, a spring is provided at one end of the transmission shaft two located inside the gearbox, and the spring one is adapted to the internal gear.

[0013] Through the above technical solution, the design of spring one allows the internal gear to move upwards, which then facilitates subsequent manual pushing of the cart.

[0014] Preferably, the clutch pusher is adapted to the spring pin, and the spring pin is in contact with the internal gear.

[0015] With the above technical solution, when the cart needs to be pushed manually, first engage the push rod in the "clutch off" position. At this time, the spring pin on the clutch shaft rotates and pushes the clutch pusher upward. At this time, the internal gear on the second drive shaft also moves upward, disengaging from the original connection with the internal and external gears on the second drive shaft. This allows the wheels of the second drive shaft to spin freely, making it easy to push the chair. When the push rod is engaged in the "clutch in" position, spring one and spring two will return the clutch pusher and internal gear to their original positions.

[0016] Preferably, a push rod is fixedly installed on the outer surface of the gearbox on the clutch shaft, and the push rod and the clutch shaft are an integral structure.

[0017] With the above technical solution, when clutch operation is required, force is directly applied to the push rod. Since the push rod and clutch shaft are integrally formed, the force is directly transmitted to the clutch shaft, causing the clutch shaft to rotate, thereby triggering the clutch mechanism. The push rod and clutch shaft with an integral structure are structurally stable and are not prone to loosening during frequent operation.

[0018] Compared with the prior art, this utility model provides a speed reducer for an electric vehicle seat with a manual clutch, which has the following advantages:

[0019] This electric chair reducer with a manual clutch works as follows: When you need to push the chair manually, first engage the lever in the "clutch off" position. At this time, the spring pin on the clutch shaft rotates, pushing the clutch lever upward. This causes the internal gear on the second drive shaft to move upward as well, disengaging from the original connection between the internal and external gears on the second drive shaft. This allows the wheel on the second drive shaft to spin freely, making it easy to push the chair. When you engage the lever in the "clutch in" position, springs one and two will return the clutch lever and internal gear to their original positions. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the utility model Figure 3 ;

[0023] Figure 4 This is a schematic diagram of the cross-sectional structure of the present invention. Figure 1 ;

[0024] Figure 5 This is a schematic diagram of the cross-sectional structure of the present invention. Figure 2 .

[0025] The components are as follows: 1. Motor; 2. Protective box; 3. Brake; 4. Bevel gear one; 5. Bevel gear two; 6. Drive shaft; 7. Gearbox; 8. External gear; 9. Internal gear; 10. Drive shaft two; 11. Spring one; 12. Wheel mounting flange; 13. Clutch shaft; 14. Spring two; 15. Clutch push handle; 16. Spring pin; 17. Push rod; 18. Connecting wire one; 19. Connecting wire two. Detailed Implementation

[0026] 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.

[0027] Example 1: As Figure 1-5 As shown, the present invention provides a reducer for an electric vehicle seat with a manual clutch, comprising a motor 1, a brake 3, and a gearbox 7. A protective box 2 is fixedly installed on the outer surface of the motor 1. A bevel gear 4 is fixedly installed on the output shaft of the motor 1. A transmission shaft 6 is rotatably installed on the inner surface of the gearbox 7. A bevel gear 5 and an external gear 8 are fixedly installed on the outer surface of the transmission shaft 6. A transmission shaft 10 is rotatably installed on the inner surface of the gearbox 7. An internal gear 9 is fixedly installed at one end of the transmission shaft 10 inside the gearbox 7. A wheel mounting flange 12 is fixedly installed at one end of the transmission shaft 10 outside the gearbox 7. A clutch shaft 13 is rotatably installed on the inner surface of the gearbox 7. A spring 14, a clutch pusher 15, and a spring pin 16 are provided on the inner surface of the clutch shaft 13.

[0028] Specifically, the outer surface of motor 1 is provided with connecting wire 18, and the outer surface of protective box 2 is provided with connecting wire 19. Connecting wire 19 is electrically connected to brake 3.

[0029] The advantages are that the design of connecting wire 18 and connecting wire 2 19 facilitates accurate installation, reduces the probability of wiring errors during assembly, improves production efficiency, and ensures that the electrical connection with brake 3 can guarantee that brake 3 can respond accurately to commands when motor 1 is running, thereby achieving rapid braking of motor 1.

[0030] Specifically, a brake 3 is fixedly installed on the inner surface of the protective box 2, and the brake 3 is compatible with the motor 1.

[0031] The advantages are that the protective box 2 provides physical protection for the brake 3, preventing the intrusion of external dust, moisture and other impurities, extending the service life of the brake 3 and reducing failures caused by environmental factors. The brake 3 is compatible with the motor 1, enabling precise and rapid braking, and improving the emergency handling capability of the electric chair in complex usage scenarios.

[0032] Specifically, bevel gear 4 and bevel gear 5 are meshed, and external gear 8 and internal gear 9 are meshed.

[0033] The advantage is that the gear meshing connection can transmit power efficiently and stably. Compared with other transmission methods, the energy loss is low, which ensures that the power output of motor 1 can be transmitted to the wheel mounting flange 12 with high efficiency, driving the electric chair to run smoothly, reducing the stuttering and shaking in the power transmission process, and improving the riding comfort.

[0034] Example 2: Figure 2-5 As shown, this is an improvement on the previous embodiment.

[0035] Specifically, a spring 11 is provided at one end of the transmission shaft 2 10 located inside the gearbox 7, and the spring 11 is adapted to the internal gear 9.

[0036] The advantage is that, through the design of spring 11, the internal gear 9 can be moved upward by spring 11, which facilitates subsequent manual pushing of the cart.

[0037] Specifically, the clutch pusher 15 is adapted to the spring pin 16, and the spring pin 16 is in contact with the internal gear 9.

[0038] The advantage is that when the chauffeur needs to be pushed manually, first engage the push rod 17 in the "clutch off" position. At this time, the spring pin 16 on the clutch shaft 13 rotates and pushes the clutch pusher 15 upward. At this time, the internal gear 9 on the second drive shaft 10 also moves upward, disengaging from the original connection between the internal gear 9 and the external gear 8 on the second drive shaft 10. This allows the wheels of the second drive shaft 10 to spin freely, making it easy to push the chauffeur. When the push rod 17 is engaged in the "clutch in" position, the spring 11 and the spring 2 14 will return the clutch pusher 15 and the internal gear 9 to their original positions.

[0039] Specifically, a push rod 17 is fixedly installed on the outer surface of the gearbox 7 on the clutch shaft 13, and the push rod 17 and the clutch shaft 13 are an integral structure.

[0040] The advantage is that when the clutch operation is to be performed, force is directly applied to the push rod 17. Since the push rod 17 and the clutch shaft 13 are integrally formed, the force will be directly transmitted to the clutch shaft 13, causing the clutch shaft 13 to rotate, thereby triggering the clutch mechanism. The push rod 17 and the clutch shaft 13, which are integrally formed, are structurally stable and are not prone to loosening during frequent operation.

[0041] Working Principle: During use, power is supplied through connecting wire 18 and connecting wire 19. The protective box 2 then provides physical protection for the brake 3, preventing the intrusion of external dust, moisture, and other impurities, extending the lifespan of the brake 3 and reducing malfunctions caused by environmental factors. The brake 3 is compatible with the motor 1, achieving precise and rapid braking, enhancing the electric chair's emergency handling capabilities in complex usage scenarios. When manual pushing is required, first engage the push lever 17 in the "clutch off" position. At this time, the spring pin 16 on the clutch shaft 13 rotates, pushing the clutch pusher 15 upwards. Simultaneously, the internal gear 9 on the transmission shaft 10 also moves upwards, disengaging from the connection between the internal gear 9 and the external gear 8 on the transmission shaft 10, thus allowing the wheels of the transmission shaft 10 to be unloaded. Turning the lever 17 allows for easy movement of the chair. When the lever 17 is engaged in the "clutch in" position, springs 11 and 14 will return the clutch pusher 15 and internal gear 9 to their original positions. When clutch operation is required, force is applied directly to the lever 17. Since the lever 17 and clutch shaft 13 are integrally formed, the force is directly transmitted to the clutch shaft 13, causing it to rotate and triggering the clutch mechanism. The integrated structure of the lever 17 and clutch shaft 13 ensures a stable structure and prevents loosening during frequent operation.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A speed reducer for an electric vehicle seat with a manual clutch, comprising a motor (1), a brake (3), and a gearbox (7), characterized in that: A protective box (2) is fixedly installed on the outer surface of the motor (1). A bevel gear (4) is fixedly installed on the output shaft of the motor (1). A transmission shaft (6) is rotatably installed on the inner surface of the gearbox (7). A bevel gear (5) and an external gear (8) are fixedly installed on the outer surface of the transmission shaft (6). A transmission shaft (10) is rotatably installed on the inner surface of the gearbox (7). An internal gear (9) is fixedly installed at one end of the transmission shaft (10) inside the gearbox (7). A wheel mounting flange (12) is fixedly installed at one end of the transmission shaft (10) outside the gearbox (7). A clutch shaft (13) is rotatably installed on the inner surface of the gearbox (7). A spring (14), a clutch pusher (15), and a spring pin (16) are provided on the inner surface of the clutch shaft (13) inside the gearbox (7).

2. The reducer for an electric chair with a manual clutch according to claim 1, characterized in that: The outer surface of the motor (1) is provided with a connecting wire one (18), and the outer surface of the protective box (2) is provided with a connecting wire two (19). The connecting wire two (19) is electrically connected to the brake (3).

3. The reducer for an electric chair with a manual clutch according to claim 1, characterized in that: A brake (3) is fixedly installed on the inner surface of the protective box (2), and the brake (3) is compatible with the motor (1).

4. A speed reducer for an electric chair with a manual clutch according to claim 1, characterized in that: The first bevel gear (4) and the second bevel gear (5) are meshed, and the external gear (8) and the internal gear (9) are meshed.

5. A speed reducer for an electric chair with a manual clutch according to claim 1, characterized in that: The transmission shaft 2 (10) is provided with a spring 1 (11) at one end inside the gearbox (7), and the spring 1 (11) is adapted to the internal gear (9).

6. A speed reducer for an electric chair with a manual clutch according to claim 1, characterized in that: The clutch pusher (15) is adapted to the spring pin (16), and the spring pin (16) is in contact with the internal gear (9).

7. A speed reducer for an electric chair with a manual clutch according to claim 1, characterized in that: The clutch shaft (13) is fixedly mounted with a push rod (17) on the outer surface of the gearbox (7), and the push rod (17) and the clutch shaft (13) are an integral structure.

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