A magnetoresistive adjustable electric bicycle pedal assist sensing device

Abstract

The utility model relates to electric bicycle field discloses a magnetoresistance adjustable electric bicycle pedal power sensing device, including the rotary lever, the outer wall fixedly connected with the fixed disc of rotary lever, the outer wall detachably installed with sensor of rotary lever, the front and back end of rotary lever all is provided with the pedal, the inner wall sliding connection with moving plate of fixed disc, the bottom end of moving plate is provided with extrusion groove, the outer wall fixedly connected with the plug -in block of moving plate, the top fixedly connected with the sliding block of plug -in block, the inner wall of sliding block inserts the bolt. In the utility model, through manual movement sliding block drives plug -in block and limit block cooperation, can complete the accurate positioning and clamping of sensor quickly, cooperation bolt still can further lock sliding block, form double -fixed, ensure that sensor in the bicycle driving process, even if meet the jounce or vibration is not easy to shift, the stability of sensor work has been improved obviously.

Description

Technical Field

[0001] This utility model relates to the field of electric bicycles, and in particular to a magnetically adjustable electric bicycle pedal assist sensing device. Background Technology

[0002] The pedal assist sensor in electric bicycles is a core component for achieving coordinated human and electric drive. It can accurately detect pedaling force and feed it back to the control system to adjust the amount of motor assistance, directly affecting the effortlessness and comfort of riding. It is of great significance for improving the range of electric bicycles and optimizing power output efficiency, and is a key component of the intelligent and human-centered design of electric bicycles.

[0003] In the existing technology, when installing sensors in electric bicycle pedal assist sensors, the method of close snap-fit ​​is mostly adopted. That is, the sensor is directly snapped into the corresponding slot of the rotating rod or fixed structure, and the initial positioning is achieved by the contact of the snap-fit ​​surfaces. No additional fixed limiting mechanism is set. After installation, the position is maintained by the friction between the structures. The initial assembly of the sensor can be completed without the need for complicated tools.

[0004] The existing technology has the following drawbacks: because it is fixed by a close snap-fit ​​without a dedicated limiting mechanism, the sensor is prone to displacement or loosening when the electric bicycle encounters bumpy or vibrating road conditions. This causes the pedal signal detected by the sensor to deviate, resulting in inaccurate motor assist output, affecting the riding experience. In severe cases, it may even cause the sensor to fall off, causing the assist function to fail. To address these issues, a magnetically adjustable electric bicycle pedal assist sensor device is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a magnetically adjustable electric bicycle pedal assist sensor, which aims to improve the problem of poor stability of the sensor after installation in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a magnetically adjustable electric bicycle pedal assist sensing device, comprising a rotating rod, a fixed plate fixedly connected to the outer wall of the rotating rod, a sensor detachably mounted on the outer wall of the rotating rod, pedals provided at both the front and rear ends of the rotating rod, a movable plate slidably connected to the inner wall of the fixed plate, a pressing groove provided at the bottom end of the movable plate, an insert block fixedly connected to the outer wall of the movable plate, a slider fixedly connected to the top end of the insert block, a bolt inserted into the inner wall of the slider, a movable mechanism provided on the inner wall of the fixed plate, and a buffer assembly provided on the outer wall of the rotating rod;

[0007] The movable mechanism includes a guide rod, which is fixedly connected to the inner wall of the fixed disk. A limit block is slidably connected to the outer wall of the guide rod, and the right side wall of the limit block is elastically connected to the fixed disk through a movable spring.

[0008] As a further description of the above technical solution:

[0009] The buffer assembly includes a rubber pad, which is fixedly connected to the outer wall of the rotating rod, and the outer wall of the fixed plate has a circular groove.

[0010] As a further description of the above technical solution:

[0011] The limiting block is snapped onto the inner wall of the sensor.

[0012] As a further description of the above technical solution:

[0013] The limiting block is slidably connected to the inner wall of the fixed plate, and the insert block is slidably connected to the inner wall of the fixed plate.

[0014] As a further description of the above technical solution:

[0015] The plug is inserted into the top of the sensor.

[0016] As a further description of the above technical solution:

[0017] The slider is slidably connected to the outer wall of the fixed disk, and the bolt is threadedly connected to the outer wall of the fixed disk.

[0018] As a further description of the above technical solution:

[0019] The right sidewall of the limiting block is fixedly connected to one end of the movable spring, and the other end of the movable spring is fixedly connected to the right inner wall of the fixed plate.

[0020] As a further description of the above technical solution:

[0021] The inner wall of the extrusion groove is in contact with the top of the limiting block.

[0022] As a further description of the above technical solution:

[0023] The rubber pad is fixedly connected to the inner wall of the circular groove, and the inside of the rubber pad has a circular groove.

[0024] As a further description of the above technical solution:

[0025] The outer wall of the sensor is in contact with the outer wall of the rubber pad.

[0026] This utility model has the following beneficial effects:

[0027] 1. In this utility model, by manually moving the slider to drive the insertion block and the limiting block to cooperate, the sensor can be quickly and accurately positioned and clamped. With the help of bolts, the slider can be further locked to form a double fixation, ensuring that the sensor is not easily moved even when encountering bumps or vibrations during bicycle operation, which significantly improves the stability of the sensor during operation.

[0028] 2. In this utility model, the rubber pad is attached to the sensor surface during sensor installation. On the one hand, it can fill the gap between the sensor and the outer wall of the rotating rod, reduce the loose space after installation, and enhance the stability of the sensor after fixing. On the other hand, it can act as a buffer medium to absorb the vibration or slight collisions that the sensor is subjected to during use, avoid the sensor from directly contacting the rigid rotating rod and causing wear, thereby extending the service life of the sensor. Attached Figure Description

[0029] Figure 1 A schematic diagram showing the lever and pedal of an electric bicycle pedal assist sensing device with adjustable magnetic resistance proposed in this utility model.

[0030] Figure 2 A schematic diagram showing the fixed plate of a magnetically adjustable electric bicycle pedal assist sensing device proposed in this utility model.

[0031] Figure 3 A schematic diagram showing the sensor and mounting plate of an electric bicycle pedal assist sensing device with adjustable magnetic resistance proposed in this utility model.

[0032] Figure 4 A cross-sectional schematic diagram of the fixed plate of a magnetically adjustable electric bicycle pedal assist sensing device proposed in this utility model.

[0033] Figure 5 A schematic diagram showing the moving plate of an electric bicycle pedal assist sensing device with adjustable magnetic resistance proposed in this utility model.

[0034] Figure 6 An exploded view of the rubber pad and circular groove of a magnetically adjustable electric bicycle pedal assist sensing device proposed in this utility model.

[0035] Figure 7 This is a schematic diagram showing the limit block of a magnetically adjustable electric bicycle pedal assist sensing device proposed in this utility model.

[0036] Legend:

[0037] 1. Rotating rod; 2. Fixed plate; 3. Pedal; 4. Sensor; 5. Limit block; 6. Movable spring; 7. Guide rod; 8. Moving plate; 9. Extrusion groove; 10. Insert block; 11. Slider; 12. Bolt; 13. Circular groove; 14. Rubber pad. 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 Figures 1-3 This utility model provides an embodiment of a magnetically adjustable electric bicycle pedal assist sensor, comprising a rotating rod 1. The rotating rod 1 is the core rotating component of the device, and its axis is aligned with the crank axis of the electric bicycle pedal 3. It is the key carrier for transmitting pedal power. A fixed plate 2 is fixedly connected to the outer wall of the rotating rod 1. The fixed plate 2 is made of high-strength alloy material and is welded to the rotating rod 1 to form a stable whole. It is used to install and support other sensing components. A sensor 4 is detachably installed on the outer wall of the rotating rod 1. Pedals 3 are provided at both the front and rear ends of the rotating rod 1. The pedals 3 are rotatably connected to the ends of the rotating rod 1 through bushings. The surface of the pedals 3 is provided with anti-slip texture to increase the friction between the foot and the pedals 3 during riding. A movable plate 8 is slidably connected to the inner wall of the fixed plate 2. The fixed plate 2 has openings for connecting with the movable plate 8. The corresponding slots allow the movable plate 8 to move up and down. The bottom end of the movable plate 8 is provided with a pressing groove 9. The outer wall of the movable plate 8 is fixedly connected with a plug 10. The plug 10 is L-shaped. The top end of the plug 10 is fixedly connected with a slider 11. The inner wall of the slider 11 is fitted with a bolt 12. The slider 11 is provided with a slot corresponding to the smooth surface of the bolt 12. The inner wall of the fixed plate 2 is provided with a movable mechanism. The outer wall of the rotating rod 1 is provided with a buffer assembly. The movable mechanism includes a guide rod 7. The guide rod 7 is fixedly connected to the inner wall of the fixed plate 2. The guide rod 7 plays a connecting and guiding role for the fixed plate 2. The outer wall of the guide rod 7 is slidably connected with a limit block 5. The limit block 5 is provided with a slot corresponding to the guide rod 7 to facilitate the left and right movement of the limit block 5. The right side wall of the limit block 5 is elastically connected to the fixed plate 2 through a movable spring 6.

[0040] Reference Figure 6The buffer assembly includes a rubber pad 14, which is fixedly connected to the outer wall of the rotating rod 1. The rubber pad 14 is made of highly elastic nitrile rubber, which has good shock absorption and wear resistance. The outer wall of the fixed plate 2 has a circular groove 13, the diameter of which matches the outer diameter of the rubber pad 14, providing installation space for the rubber pad 14. The rubber pad 14 is fixedly connected to the inner wall of the circular groove 13. The inside of the rubber pad 14 has a circular opening. The elastic wrapping of the rubber pad 14 achieves buffer protection for the sensor 4, reducing the impact of vibration on the sensing accuracy. The outer wall of the sensor 4 is in contact with the outer wall of the rubber pad 14.

[0041] Reference Figure 4 , Figure 5 and Figure 7 The limiting block 5 is snapped onto the inner wall of the sensor 4. The sensor 4 has a slot corresponding to the limiting block 5. The limiting block 5 passes through and is slidably connected to the inner wall of the fixed disk 2. The fixed disk 2 has a slot corresponding to the limiting block 5, allowing the limiting block 5 to move left and right. The insert block 10 is slidably connected to the inner wall of the fixed disk 2. The fixed disk 2 has a slot corresponding to the insert block 10, allowing the insert block 10 to move up and down. The insert block 10 is inserted into the top of the sensor 4. The sensor 4 has a rectangular slot corresponding to the insert block 10. The slider 11 is slidably connected to the outer wall of the fixed disk 2. The fixed plate 2 has a slot corresponding to the slider 11, allowing the slider 11 to move up and down. The bolt 12 is threaded onto the outer wall of the fixed plate 2. The fixed plate 2 has a thread matching the bolt 12. The right side wall of the limiting block 5 is fixedly connected to one end of the movable spring 6, and the other end of the movable spring 6 is fixedly connected to the right inner wall of the fixed plate 2. When the limiting block 5 moves to the left, the movable spring 6 is stretched. When resetting, the elastic force of the movable spring 6 is used to reset the limiting block 5. The inner wall of the extrusion groove 9 contacts the top of the limiting block 5, and the extrusion groove 9 will squeeze the two sets of limiting blocks 5 to separate from each other.

[0042] Working principle: When sensor 4 needs to be installed, before pedal 3 is installed, manually align sensor 4 and insert it into the outer wall of rotating rod 1. At this time, sensor 4 is in contact with the surface of rubber pad 14. Then, manually move slider 11 downward. Slider 11 will move insert block 10 and moving plate 8 downward. At this time, extrusion groove 9 will extrude limit block 5, causing the two sets of limit blocks 5 to separate and stretch movable spring 6. When insert block 10 is inserted into the top of sensor 4, limit block 5 will engage with the slot of sensor 4, completing the installation limit of sensor 4. At the same time, the slot on slider 11 coincides with the slot on fixed plate 2. Manually insert and tighten. Bolt 12 limits the slider 11. When the sensor 4 needs to be disassembled, manually unscrew bolt 12. When bolt 12 separates from the slot on the fixed plate 2 and slider 11, manually move slider 11 upward. As slider 11 moves upward with moving plate 8, when the pressing groove 9 no longer contacts the limiting block 5, the two sets of limiting blocks 5 move closer to each other under the elastic force of movable spring 6. When the insert 10 separates from the upper slot of sensor 4, the limiting block 5 also separates from the slot on sensor 4. Then, manually remove sensor 4. Rubber pad 14 can absorb the vibration of sensor 4 during use and prevent sensor 4 from being worn.

[0043] 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 magnetically adjustable electric bicycle pedal assist sensing device, comprising a rotating rod (1), characterized in that: A fixed plate (2) is fixedly connected to the outer wall of the rotating rod (1). A sensor (4) is detachably installed on the outer wall of the rotating rod (1). A pedal (3) is provided at both the front and rear ends of the rotating rod (1). A movable plate (8) is slidably connected to the inner wall of the fixed plate (2). A pressing groove (9) is opened at the bottom end of the movable plate (8). An insert (10) is fixedly connected to the outer wall of the movable plate (8). A slider (11) is fixedly connected to the top end of the insert (10). A bolt (12) is inserted into the inner wall of the slider (11). A movable mechanism is provided on the inner wall of the fixed plate (2). A buffer assembly is provided on the outer wall of the rotating rod (1). The active mechanism includes a guide rod (7), which is fixedly connected to the inner wall of the fixed disk (2). A limit block (5) is slidably connected to the outer wall of the guide rod (7). The right side wall of the limit block (5) is elastically connected to the fixed disk (2) through an active spring (6).

2. The reluctance-adjustable electric bicycle pedal assist sensing device according to claim 1, characterized in that: The buffer assembly includes a rubber pad (14), which is fixedly connected to the outer wall of the rotating rod (1), and the outer wall of the fixed plate (2) is provided with a circular groove (13).

3. The reluctance-adjustable electric bicycle pedal assist sensing device according to claim 1, characterized in that: The limiting block (5) is snapped onto the inner wall of the sensor (4).

4. The reluctance-adjustable electric bicycle pedal assist sensing device according to claim 1, characterized in that: The limiting block (5) is slidably connected to the inner wall of the fixed disk (2), and the insert block (10) is slidably connected to the inner wall of the fixed disk (2).

5. The reluctance-adjustable electric bicycle pedal assist sensing device according to claim 1, characterized in that: The plug (10) is inserted into the top of the sensor (4).

6. The reluctance-adjustable electric bicycle pedal assist sensing device according to claim 1, characterized in that: The slider (11) is slidably connected to the outer wall of the fixed disk (2), and the bolt (12) is threadedly connected to the outer wall of the fixed disk (2).

7. The reluctance-adjustable electric bicycle pedal assist sensing device according to claim 1, characterized in that: The right side wall of the limiting block (5) is fixedly connected to one end of the movable spring (6), and the other end of the movable spring (6) is fixedly connected to the right inner wall of the fixed plate (2).

8. The reluctance-adjustable electric bicycle pedal assist sensing device according to claim 1, characterized in that: The inner wall of the extrusion groove (9) is in contact with the top of the limiting block (5).

9. The reluctance-adjustable electric bicycle pedal assist sensing device according to claim 2, characterized in that: The rubber pad (14) is fixedly connected to the inner wall of the circular groove (13), and the inside of the rubber pad (14) has a circular groove.

10. The reluctance-adjustable electric bicycle pedal assist sensing device according to claim 2, characterized in that: The outer wall of the sensor (4) is in contact with the outer wall of the rubber pad (14).

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