Middle shaft sensor applied to electric power-assisted bicycle

Abstract

The utility model relates to the technical field of torque speed sensors, and discloses a center shaft sensor applied to an electric power-assisted bicycle, which comprises a five-way center shaft, a torque sensor and a speed sensor. According to the center shaft sensor applied to the electric power-assisted bicycle, when the bicycle runs, pedal force value change information of a deformation sleeve is collected through an arranged data acquisition module, the information is transmitted to a first power coil through a data receiving module, and then the information is modulated and transmitted to a second power coil plate through the first power coil; the multi-pole magnetic ring on the rotating shaft of the speed sensor transmits the information of the rotating speed of the five-way center shaft to the Hall sensor with the latch, the Hall sensor transmits forward and reverse rotation stepping speed signals to the data transmitting module, and the data transmitting module transmits the torque and speed information to the data receiving module. Transmission is output through a waterproof multi-core connecting wire and provided for a motor controller to control the speed and the power of a bicycle motor, and good riding experience and the effect of saving electricity and energy are brought to people.

Description

Technical Field

[0001] The utility model relates to the technical field of torque speed sensors, in particular to a central axis sensor used in an electric power-assisted bicycle. Background Art

[0002] At present, E-bike (power-assisted bicycle) is different from traditional bicycle and all-electric bicycle. Traditional bicycle is ridden completely by human power, and all-electric bicycle is ridden completely by electricity. Power-assisted bicycle is between the two. Power-assisted bicycle is ridden by human power, but it has a power-assisted system, which makes human riding easier and saves effort. The power-assisted system of power-assisted bicycle cooperates with people through sensors. There are two types of sensors used in existing power-assisted bicycles. One is the torque sensor, which controls the motor to provide auxiliary power by detecting the force applied by people on the middle axis; the other is the speed sensor, which controls the motor to provide auxiliary power by detecting the speed of the middle axis; however, at this stage, they are used separately, and when installing, each sensor and its installation components are numerous, and the degree of integration is low. They need to be installed on the bicycle one by one, which is very inconvenient. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a mid-axle sensor for an electric power-assisted bicycle, which solves the above-mentioned problems.

[0004] The utility model provides the following technical solution: a central axis sensor for an electric power-assisted bicycle, comprising a five-way central axis, a torque sensor and a speed sensor, wherein the torque sensor comprises a rotating structure and a fixed structure, wherein the rotating structure is sleeved on the outer surface of the five-way central axis, the fixed structure is sleeved on the outer surface of the rotating structure, and the speed sensor is installed inside the fixed structure;

[0005] The rotating structure comprises a deformable sleeve and a deformable plastic sleeve, wherein the deformable plastic sleeve is mounted on the outer surface of the deformable sleeve, a data receiving module is arranged on the outer surface of the deformable sleeve, and a first power coil plate is mounted on the outer surface of the deformable plastic sleeve;

[0006] The fixed structure includes an integral plastic sleeve, a waterproof multi-core connecting wire, a Hall sensor with a latch and a data transmitting module. The outer surface of the integral plastic sleeve is provided with two notches. The Hall sensor with a latch and the data transmitting module are respectively installed in the corresponding notches. A second power coil is installed at one end of the integral plastic sleeve.

[0007] Preferably, the data receiving module protrudes from the outer surface of the deformable sleeve, and the outer surface of the deformable plastic sleeve is provided with an opening, and the opening fits with the data receiving module.

[0008] Preferably, the rotating structure further includes a data acquisition module, an output end of the data acquisition module is electrically connected to an input end of a data receiving module, and an output end of the data receiving module is electrically connected to the first power coil plate.

[0009] Preferably, the fixed structure further comprises a limiting plastic sleeve, the limiting plastic sleeve is sleeved on the outer surface of the integral plastic sleeve, and the Hall sensor with latch and the data transmitting module are both arranged inside the limiting plastic sleeve.

[0010] Preferably, a first five-way fixing sleeve is installed at one end of the limiting plastic sleeve, an external tooth is installed at one end of the deformation sleeve, a sprocket sleeve is provided at one end of the deformation sleeve, an internal tooth is provided at one end of the sprocket sleeve close to the deformation sleeve, the external teeth are matched with the internal teeth, and a second five-way fixing sleeve is provided on the outer surface of the sprocket sleeve.

[0011] Preferably, the outer surface of the five-way center shaft is sleeved with a multipolar magnetic ring, the multipolar magnetic ring and a Hall sensor with latch form a speed sensor, and the output end of the multipolar magnetic ring is electrically connected to the input end of the Hall sensor with latch.

[0012] Preferably, a wire sheath is provided on the outer surface of the waterproof multi-core connecting wire.

[0013] Preferably, the input end of the first power coil plate is electrically connected to the input end of the second power coil, the output end of the second power coil is electrically connected to the input end of the Hall sensor with latch, the output end of the Hall sensor with latch is electrically connected to the input end of the data transmission module, and the output end of the data transmission module is electrically connected to the input end of the waterproof four-core connecting cable.

[0014] Preferably, a magnetic conductive sheet is provided between the second power coil and the integral plastic sleeve, and steel needles are inserted into the outer surface of the second power coil.

[0015] Compared with the prior art, the utility model provides a mid-axle sensor for electric power-assisted bicycles, which has the following beneficial effects:

[0016] (1) The sensor is applied to the axle of an electric power-assisted bicycle. When the bicycle is running, the five-way axle twists the deformation sleeve. The data acquisition module is set to collect the numerical change information of the pedaling force of the deformation sleeve, and the information is transmitted to the first power coil through the data receiving module. Then the first power coil modulates the information and transmits it to the second power coil; the multi-pole magnetic ring on the rotating shaft of the speed sensor transmits the information of the rotation speed of the five-way axle to the Hall sensor with latch. The Hall sensor identifies the positive input of the information to the data receiving and transmitting module. The data transmitting module transmits the torque and speed information through the waterproof multi-core connecting line output to the motor controller for controlling the speed and power of the bicycle motor, which brings a good riding experience and saves electricity and energy.

[0017] (2) The sensor for the central axis of an electric power-assisted bicycle includes a five-way central axis, a torque sensor and a speed sensor. The torque sensor includes a rotating structure and a fixed structure. The rotating structure and the fixed structure are highly integrated and are both cylindrical. When installed, they can be directly mounted on the outer surface of the five-way central axis in sequence, which is convenient to install.

[0018] (3) The sensor is applied to the axle of an electric power-assisted bicycle. During assembly, the five-way axle passes through two five-way fixing sleeves. The rotating structure is rotatably connected to the five-way fixing sleeves through bearings, while the fixed structure is fixedly connected to the five-way fixing sleeves to ensure that when the five-way bearing drives the rotating structure to rotate, the fixed structure does not rotate. The waterproof multi-core connecting wire is connected to the wireless power transmitting module to ensure that the waterproof multi-core connecting wire does not rotate with the rotation of the five-way axle during operation, thereby ensuring the normal operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0021] Figure 3 It is a logic block diagram of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the fixed structure of the utility model.

[0023] In the figure: 1. five-way middle axis; 2. deformation sleeve; 3. deformation plastic sleeve; 4. data receiving module; 5. integral plastic sleeve; 6. waterproof multi-core connecting wire; 7. wire protection sleeve; 8. second five-way fixing sleeve; 9. toothed disc sleeve; 10. limiting plastic sleeve; 11. notch; 12. first five-way fixing sleeve; 13. first power coil; 14. multi-polar magnetic ring; 15. magnetic conductive sheet; 16. steel needle; 17. second power coil; 18. Hall sensor with latch; 19. data transmitting module;. DETAILED DESCRIPTION

[0024] See also Figure 1-4 A central axis sensor for an electric power-assisted bicycle comprises a five-way central axis 1, a torque sensor and a speed sensor, wherein the torque sensor comprises a rotating structure and a fixed structure, wherein the rotating structure is sleeved on the outer surface of the five-way central axis 1, the fixed structure is sleeved on the outer surface of the rotating structure, and the speed sensor is installed inside the fixed structure;

[0025] The rotating structure includes a deformable sleeve 2 and a deformable plastic sleeve 3. The deformable plastic sleeve 3 is installed on the outer surface of the deformable sleeve 2. The outer surface of the deformable sleeve 2 is provided with a data receiving module 4. The outer surface of the deformable plastic sleeve 3 is installed with a first power coil 13; the first power coil 13 can provide electrical energy.

[0026] The fixed structure includes an integral plastic sleeve 5, a waterproof multi-core connecting wire 6, a Hall sensor with latch 18 and a data transmitting module 19. The outer surface of the integral plastic sleeve 5 is provided with two notches 11. The Hall sensor with latch 18 and the data transmitting module 19 are respectively installed in the corresponding notches 11. A second power coil 17 is installed at one end of the integral plastic sleeve 5.

[0027] The data receiving module 4 protrudes from the outer surface of the deformable sleeve 2 , and the outer surface of the deformable plastic sleeve 3 is provided with an opening, which fits with the data receiving module 4 .

[0028] The rotating structure also includes a data acquisition module, the output end of the data acquisition module is electrically connected to the input end of the data receiving module 4 , and the output end of the data receiving module 4 is electrically connected to the first power coil 13 .

[0029] The fixed structure also includes a limiting plastic sleeve 10 . The limiting plastic sleeve 10 is sleeved on the outer surface of the integral plastic sleeve 5 . The Hall sensor 18 with latch and the data transmitting module 19 are both arranged inside the limiting plastic sleeve 10 .

[0030] A mounting ring is provided at one end of the fixed structure, and the diameter of the mounting ring is smaller than the diameter of the overall plastic sleeve 5. A notch 11 is provided on the outer surface of the mounting ring. The limiting plastic sleeve 10 is in line with the mounting ring to facilitate assembly. At the same time, the assembled limiting plastic sleeve 10 can limit the Hall sensor 18 with latch and the data transmitting module 19, ensuring that the device can be used normally on bumpy roads.

[0031] A first five-way fixing sleeve 12 is installed at one end of the limiting plastic sleeve 10, an external tooth is installed at one end of the deformation sleeve 2, a sprocket sleeve 9 is provided at one end of the deformation sleeve 2, and an internal tooth is provided at one end of the sprocket sleeve 9 close to the deformation sleeve 2, and the external teeth match the internal teeth. A second five-way fixing sleeve 8 is provided on the outer surface of the sprocket sleeve 9.

[0032] The outer surface of the five-way center shaft 1 is sleeved with a multipolar magnetic ring 14 , which and a Hall sensor 18 with latch form a speed sensor, and the output end of the multipolar magnetic ring 14 is electrically connected to the input end of the Hall sensor 18 with latch.

[0033] The outer surface of the waterproof multi-core connecting wire 6 is provided with a wire protection sleeve 7 to protect the waterproof multi-core connecting wire 6. The waterproof multi-core connecting wire 6 commonly adopts 4 cores or 6 cores. A plug is installed at one end of the waterproof multi-core connecting wire 6, which can be connected to the electric power-assisted bicycle.

[0034] The input end of the first power coil 13 is electrically connected to the input end of the second power coil 17, the output end of the second power coil 17 is electrically connected to the input end of the Hall sensor 18 with latch, the output end of the Hall sensor 18 with latch is electrically connected to the input end of the data transmission module 19, and the output end of the data transmission module 19 is electrically connected to the input end of the waterproof four-core connecting cable 6.

[0035] When in use, when the bicycle is traveling, the five-way middle shaft 8 twists the deformation sleeve 2, and the data acquisition module is used to collect the numerical change information of the pedaling force of the deformation sleeve 2, and the information is transmitted to the first power coil 13 through the data receiving module, and then the first power coil 13 modulates the information and transmits it to the second power coil 18; the multi-pole magnetic ring 14 on the rotating shaft of the speed sensor transmits the information of the rotation speed of the five-way middle shaft 1 to the Hall sensor 18 with latch, and the Hall sensor 18 identifies the positive input of the information to the data receiving and transmitting module, and the data transmitting module transmits the torque and speed information through the waterproof multi-core connecting line 6 output to the motor controller to control the speed and power of the bicycle motor, which brings a good riding experience and energy-saving effects.

[0036] A magnetic conductive sheet 15 is provided between the second power coil 17 and the integral plastic sleeve 5 , and a steel needle 16 is inserted through the outer surface of the second power coil 17 .

[0037] The first power coil 13 and the second power coil 17 have the same structure, and a magnetic conductive sheet and a steel needle are also provided between the first power coil and the deformable plastic sleeve 3 .

[0038] The speed sensor may also be a sensor of other forms to replace the Hall sensor 18 with latch, and the data acquisition module may be a strain gauge sensor.

[0039] To sum up, during use, when the bicycle is traveling, the five-way middle axis 8 twists the deformation sleeve 2, and the data acquisition module is used to collect the numerical change information of the pedaling force of the deformation sleeve 2, and the information is transmitted to the first power coil 13 through the data receiving module, and then the first power coil 13 modulates the information and transmits it to the second power coil 18; the multi-pole magnetic ring 14 on the rotating shaft of the speed sensor transmits the information of the rotation speed of the five-way middle axis 1 to the Hall sensor 18 with latch, and the Hall sensor 18 identifies the positive input of the information to the data receiving and transmitting module, and the data transmitting module transmits the torque and speed information through the waterproof multi-core connecting line 6 output to the motor controller to control the speed and power of the bicycle motor, which brings a good riding experience and energy-saving effects.

[0040] The central axis sensor applied to an electric power-assisted bicycle comprises a five-way central axis 1, a torque sensor and a speed sensor. The torque sensor comprises a rotating structure and a fixed structure. The rotating structure and the fixed structure are highly integrated and are both cylindrical. When installed, they can be directly sleeved on the outer surface of the five-way central axis 1 in sequence, which is easy to install.

[0041] The invention is applied to the middle axis sensor of an electric power-assisted bicycle. During assembly, the five-way middle axis 1 passes through two five-way fixing sleeves. The rotating structure is rotatably connected to the five-way fixing sleeves through bearings, while the fixed structure is fixedly connected to the five-way fixing sleeves to ensure that when the five-way bearing 1 drives the rotating structure to rotate, the fixed structure does not rotate. The waterproof multi-core connecting wire 6 is connected to the wireless power transmitting module to ensure that the waterproof multi-core connecting wire 6 does not rotate with the rotation of the five-way middle axis 1 during operation, thereby ensuring the normal operation of the device.

Claims

1. A mid-axle sensor for an electric power-assisted bicycle, comprising a five-way mid-axle (1), a torque sensor and a speed sensor, characterized in that: The torque sensor comprises a rotating structure and a fixed structure, wherein the rotating structure is sleeved on the outer surface of the five-way middle shaft (1), the fixed structure is sleeved on the outer surface of the rotating structure, and the speed sensor is installed inside the fixed structure; The rotating structure comprises a deformable sleeve (2) and a deformable plastic sleeve (3), wherein the deformable plastic sleeve (3) is mounted on the outer surface of the deformable sleeve (2), a data receiving module (4) is provided on the outer surface of the deformable sleeve (2), and a first power coil plate (13) is installed on the outer surface of the deformable plastic sleeve (3); The fixed structure comprises an integral plastic sleeve (5), a waterproof multi-core connecting wire (6), a Hall sensor with a latch (18) and a data transmitting module (19); the outer surface of the integral plastic sleeve (5) is provided with two notches (11); the Hall sensor with a latch (18) and the data transmitting module (19) are respectively installed in the corresponding notches (11); and a second power coil (17) is installed at one end of the integral plastic sleeve (5).

2. The axle sensor for an electric power-assisted bicycle according to claim 1, characterized in that: The data receiving module (4) protrudes from the outer surface of the deformable sleeve (2), and the outer surface of the deformable plastic sleeve (3) is provided with an opening, and the opening fits with the data receiving module (4).

3. The axle sensor for an electric power-assisted bicycle according to claim 1, characterized in that: The rotating structure also includes a data acquisition module, the output end of the data acquisition module is electrically connected to the input end of the data receiving module (4), and the output end of the data receiving module (4) is electrically connected to the first power coil plate (13).

4. The axle sensor for an electric power-assisted bicycle according to claim 1, characterized in that: The fixed structure also includes a limiting plastic sleeve (10). The limiting plastic sleeve (10) is sleeved on the outer surface of the overall plastic sleeve (5), and the Hall sensor (18) with latch and the data transmission module (19) are both arranged inside the limiting plastic sleeve (10).

5. The axle sensor for an electric power-assisted bicycle according to claim 4, characterized in that: A first five-way fixing sleeve (12) is installed at one end of the limiting plastic sleeve (10), one end of the deformable sleeve (2) has external teeth, one end of the deformable sleeve (2) is provided with a toothed disc sleeve (9), and the toothed disc sleeve (9) is provided with internal teeth at one end close to the deformable sleeve (2), the external teeth are matched with the internal teeth, and the outer surface of the toothed disc sleeve (9) is provided with a second five-way fixing sleeve (8).

6. The axle sensor for an electric power-assisted bicycle according to claim 1, characterized in that: The outer surface of the five-way center shaft (1) is sleeved with a multipolar magnetic ring (14), the multipolar magnetic ring (14) and a latched Hall sensor (18) form a speed sensor, and the output end of the multipolar magnetic ring (14) is electrically connected to the input end of the latched Hall sensor (18).

7. The axle sensor for an electric power-assisted bicycle according to claim 1, characterized in that: The outer surface of the waterproof multi-core connecting wire (6) is provided with a wire protection sleeve (7).

8. The axle sensor for an electric power-assisted bicycle according to claim 6, characterized in that: The input end of the first power coil plate (13) is electrically connected to the input end of the second power coil (17), the output end of the second power coil (17) is electrically connected to the input end of the Hall sensor (18) with latch, the output end of the Hall sensor (18) with latch is electrically connected to the input end of the data transmission module (19), and the output end of the data transmission module (19) is electrically connected to the input end of the waterproof four-core connecting wire (6).

9. The axle sensor for an electric power-assisted bicycle according to claim 1, characterized in that: A magnetic conductive sheet (15) is provided between the second power coil (17) and the integral plastic sleeve (5), and a steel needle (16) is inserted through the outer surface of the second power coil (17).

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