CN220147514U - Pedal frequency system of electric bicycle center shaft - Google Patents
Pedal frequency system of electric bicycle center shaft Download PDFInfo
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- CN220147514U CN220147514U CN202320569709.8U CN202320569709U CN220147514U CN 220147514 U CN220147514 U CN 220147514U CN 202320569709 U CN202320569709 U CN 202320569709U CN 220147514 U CN220147514 U CN 220147514U
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- 229920001971 elastomer Polymers 0.000 claims abstract description 13
- 239000000806 elastomer Substances 0.000 claims abstract description 13
- 238000009434 installation Methods 0.000 claims description 5
- 230000003993 interaction Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 230000006698 induction Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model discloses a pedal frequency system of a middle shaft of an electric bicycle, which comprises: the pedal frequency assembly comprises a shell, a mounting framework, a pedal frequency PCB, a pedal frequency magnetic ring, a receiving module PCB and a transmitting module PCB, wherein the shell is sleeved on the elastomer, the mounting framework is arranged in the shell, the pedal frequency PCB is arranged on the mounting framework, the transmitting module PCB is arranged on the right side wall of the shell, a strain gauge is arranged on the surface of the elastomer, a first fixing buckle for fixing the pedal frequency magnetic ring, a second fixing buckle for fixing the receiving module PCB and a third fixing buckle matched with an annular clamping groove on the elastomer are arranged on the mounting framework, the motor of the electric bicycle is directly controlled by pedal torque, physical deformation output is more linear than magnetic induction force distance on the market, and motor output force is more natural.
Description
Technical Field
The utility model relates to the technical field of force distance sensors, in particular to a pedal frequency system of a middle shaft of an electric bicycle.
Background
In the prior art, the electric vehicle controls the speed of a motor by an electric door on a handle, the speed control mechanism of the electric vehicle is a rotating handle, also called a speed control rotating handle, is installed at the right hand position of a handlebar like a motorcycle, can control the speed of the vehicle by rotating the rotating handle during riding, and has two types of contact type and non-contact type. The contact type is mainly resistive; the non-contact type sensor comprises a Hall sensor, a photoelectric sensor, an inductance sensor and the like, and most of the non-contact type sensor currently adopts a Hall rotating handle.
Disclosure of Invention
The utility model provides a pedal frequency system of a middle shaft of an electric bicycle, which directly controls a motor of the electric bicycle by pedal torque, has more linear physical deformation output than magnetic induction force distance in the market, has more natural motor output force and brings great convenience for people to use.
In order to solve the technical problems, the utility model adopts a technical scheme that the pedal frequency system of the middle shaft of the electric bicycle comprises: the pedal frequency assembly comprises a shell, a mounting framework, a pedal frequency PCB, a pedal frequency magnetic ring, a receiving module PCB and a transmitting module PCB, wherein the shell is sleeved on the elastomer, the mounting framework is arranged in the shell, the pedal frequency PCB is mounted on the mounting framework, the transmitting module PCB is arranged on the right side wall of the shell, strain gauges are arranged on the surface of the elastomer, and a first fixing buckle for fixing the pedal frequency magnetic ring, a second fixing buckle for fixing the receiving module PCB and a third fixing buckle matched with the annular clamping groove on the elastomer are arranged on the mounting framework.
In a preferred embodiment of the present utility model, a first module for outputting electric energy and a control signal and receiving a feedback signal is integrally disposed on the transmitting module PCB, a second module for receiving electric energy and a control signal and outputting a feedback signal is integrally disposed on the receiving module PCB, the first module and the second module are both coupled to an integrated circuit of the pedal frequency PCB by a line and a signal interaction line, and the pedal frequency PCB is connected with a motor controller signal of the electric vehicle.
In a preferred embodiment of the utility model, the right end part of the elastic body is provided with a first external spline, the first external spline is meshed with a second internal spline on the chain wheel, the inner side of the elastic body is provided with a first internal spline, the first internal spline is meshed with a second external spline on the middle shaft, the outer side of the chain wheel is provided with a chain wheel nut, and the chain wheel nut is provided with a clamp spring for fixing the chain wheel.
In a preferred embodiment of the present utility model, a first bearing is sleeved on the left end of the center shaft, and a center shaft left nut is sleeved outside the first bearing.
In a preferred embodiment of the utility model, the mounting framework is made of plastic, the length of the center shaft is 120-150MM, the outer diameter of the center shaft is 20-27MM, and the distance from the five-way end face of the electric bicycle to the end face of the mounting framework is 35-55 MM.
In a preferred embodiment of the present utility model, the mounting frame is provided with a first foolproof edge, and the receiving module PCB board is provided with a second foolproof edge matched with the first foolproof edge.
In a preferred embodiment of the utility model, the pedal frequency magnetic ring is provided with a fool-proof groove.
In a preferred embodiment of the present utility model, the housing includes a left housing and a right housing, which are detachably coupled by a nut.
In a preferred embodiment of the utility model, a second bearing is arranged between the frequency stepping magnetic ring and the left shell, and an oil seal is arranged between the transmitting module PCB and the right shell.
In a preferred embodiment of the utility model, three mounting holes are distributed on the PCB of the transmitting module at equal intervals, and the transmitting module is connected with the right shell through nuts penetrating through the mounting holes.
The beneficial effects of the utility model are as follows: the pedal frequency system of the middle shaft of the electric bicycle directly controls the motor of the electric bicycle by pedal torque, and the physical deformation output is more linear than the magnetic induction force distance on the market, and the motor output force is more natural; the device has compact volume, can assemble the existing mass production vehicle without modifying the conventional hollow pipe, and is convenient to operate.
Drawings
For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
FIG. 1 is an exploded view of the present utility model;
FIG. 2 is a schematic view of the pedal frequency system of the present utility model mounted on an electric bicycle;
FIG. 3 is a cross-sectional view of the present utility model;
FIG. 4 is a schematic diagram of a pedaling frequency system according to the present utility model;
fig. 5 is a cross-sectional view of the pedal frequency system of the present utility model.
Detailed Description
The following description of the technical solutions in the embodiments of the present utility model will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-5, the utility model relates to a pedal frequency system of a middle shaft of an electric bicycle, which comprises: the electric bicycle comprises a central shaft 1, an elastic body 2 sleeved on the central shaft and a pedal frequency assembly sleeved outside the elastic body, wherein the pedal frequency assembly comprises a shell sleeved on the elastic body, a mounting framework 3 arranged in the shell, a pedal frequency PCB (printed Circuit Board) board 4 arranged on the mounting framework, a pedal frequency magnetic ring 5, a receiving module PCB board 6 and a transmitting module PCB board 7 arranged on the shell, the mounting framework is made of plastic materials, the shell comprises a left shell 25 and a right shell 26, the left shell and the right shell are detachably connected through nuts, three mounting holes are distributed on the transmitting module PCB board at equal intervals and connected with the right shell through the nuts, strain gauges 8 are arranged on the surface of the elastic body, a first fixing buckle 9 used for fixing the pedal frequency magnetic ring, a second fixing buckle 10 used for fixing the receiving module PCB board and a third fixing buckle 12 used for being matched with an annular clamping groove 11 on the elastic body are arranged on the mounting framework, the length of the central shaft is 120-150MM, the outer diameter of the central shaft is in the range of 20-27MM, and the distance from the five ends of the electric bicycle to the mounting framework is MM-55.
Specifically, the first module for outputting electric energy and control signals and receiving feedback signals is integrated on the transmitting module PCB, the second module for receiving electric energy and control signals and outputting feedback signals is integrated on the receiving module PCB, the first module and the second module are both coupled to the integrated circuit of the pedal frequency PCB by adopting circuits and signal interaction circuits, the pedal frequency PCB is connected with a motor controller signal of the electric automobile, a central shaft drives an elastomer and a plastic mounting framework to rotate, the pedal frequency magnetic ring fixed on the mounting framework and the receiving module PCB for detecting torque also synchronously rotate, when the pedal frequency magnetic ring is pedaled, the elastomer is deformed because of a load, the strain gauge above the elastic body can measure different rotation torques, meanwhile, the feedback signals are collected to the second module of the receiving module PCB, and then the first module for detecting torque analyzes and amplifies data to be transmitted to a unit of the control motor of the electric automobile, so that the corresponding torque is given by the motor, and meanwhile, the rotation data of the pedal frequency is transmitted to the unit of the control motor by the pedal frequency PCB, so that the rotation speed of the motor of the electric automobile is synchronous to the rotation speed of the pedal frequency magnetic ring and the motor of the pedal frequency magnetic ring is more directly controlled by the motor of the pedal frequency magnetic ring, and the linear torque is more natural than that the pedal torque of the motor of the electric automobile.
Specifically, the right end of the elastomer is provided with a first external spline 13, and is meshed with a second internal spline 14 on a sprocket 24 through the first external spline, the inner side of the elastomer is provided with a first internal spline (not shown in the figure), and is meshed with a second external spline 15 on a middle shaft through the first internal spline, a sprocket nut 16 is installed on the outer side of the sprocket, a clamp spring 27 for fixing the sprocket is arranged on the sprocket nut, the sprocket is assembled to the position of the clamp spring along the first external spline, the outside is locked by the sprocket nut, a first bearing 17 is sleeved at the left end of the middle shaft, a middle shaft left nut 18 is sleeved outside the first bearing, a second bearing 19 is arranged between a pedal frequency magnetic ring and a left shell, and an oil seal 20 is arranged between a transmitting module PCB and the right shell.
Specifically, one side of installation skeleton is provided with first foolproof limit 21, is provided with on the receiving module PCB board with first foolproof limit matched with second foolproof limit 22, is provided with foolproof groove 23 on stepping on the frequency magnetic ring, is provided with on the opposite side of installation skeleton with foolproof post (not shown in the figure) of foolproof groove matched with, can effectually prevent to step on the frequency magnetic ring and receiving module PCB board dress and be reversed.
The beneficial effects of the utility model are as follows: the motor of the electric bicycle is directly controlled by pedal torque, the physical deformation output is more linear than the magnetic induction force distance on the market, the output force of the motor is more natural, great convenience is brought to the use of people, wireless power supply and information transmission are integrated, the size is compact, the conventional hollow tube is not required to be modified, and the conventional mass production vehicle can be assembled.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related arts are included in the scope of the present utility model.
Claims (10)
1. A pedal frequency system for a center shaft of an electric bicycle, comprising: the pedal frequency assembly comprises a shell, a mounting framework, a pedal frequency PCB, a pedal frequency magnetic ring, a receiving module PCB and a transmitting module PCB, wherein the shell is sleeved on the elastomer, the mounting framework is arranged in the shell, the pedal frequency PCB is mounted on the mounting framework, the transmitting module PCB is arranged on the right side wall of the shell, strain gauges are arranged on the surface of the elastomer, and a first fixing buckle for fixing the pedal frequency magnetic ring, a second fixing buckle for fixing the receiving module PCB and a third fixing buckle matched with the annular clamping groove on the elastomer are arranged on the mounting framework.
2. The system according to claim 1, wherein the transmitting module PCB is provided with a first module for outputting electric energy and control signals and receiving feedback signals, the receiving module PCB is provided with a second module for receiving electric energy and control signals and outputting feedback signals, the first module and the second module are coupled to the integrated circuit of the frequency-treading PCB by a circuit and a signal interaction circuit, and the frequency-treading PCB is connected with a motor controller signal of the electric vehicle.
3. The pedal frequency system of the middle shaft of the electric bicycle according to claim 1, wherein a first external spline is arranged at the right end part of the elastic body and is meshed with a second internal spline on the chain wheel through the first external spline, a first internal spline is arranged at the inner side of the elastic body and is meshed with a second external spline on the middle shaft through the first internal spline, a chain wheel nut is arranged at the outer side of the chain wheel, and a clamp spring for fixing the chain wheel is arranged on the chain wheel nut.
4. The pedal frequency system of the electric bicycle bottom bracket of claim 1, wherein the left end of the bottom bracket is sleeved with a first bearing, and the first bearing is sleeved with a bottom bracket left nut.
5. The pedal frequency system of the electric bicycle center shaft according to claim 1, wherein the installation framework is made of plastic materials, the length of the center shaft is 120-150MM, the outer diameter of the center shaft is in the range of 20-27MM, and the distance from the five-way end face of the electric bicycle to the end face of the installation framework is 35-55 MM.
6. The pedal frequency system of the electric bicycle center shaft according to claim 1, wherein a first foolproof edge is arranged on the installation framework, and a second foolproof edge matched with the first foolproof edge is arranged on the receiving module PCB.
7. The pedal frequency system of the electric bicycle bottom bracket of claim 1, wherein the pedal frequency magnet ring is provided with a foolproof slot.
8. The bicycle bottom bracket of claim 1, wherein the housing comprises a left housing and a right housing, the left housing and the right housing being detachably connected by a nut.
9. The pedal frequency system of the electric bicycle center shaft according to claim 8, wherein a second bearing is arranged between the pedal frequency magnetic ring and the left shell, and an oil seal is arranged between the transmitting module PCB and the right shell.
10. The pedal frequency system of the electric bicycle center shaft according to claim 8, wherein three mounting holes are distributed on the transmitting module PCB at equal intervals, and the transmitting module PCB is connected with the right shell through the mounting holes by nuts.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2023201176320 | 2023-02-06 | ||
| CN202320117632 | 2023-02-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220147514U true CN220147514U (en) | 2023-12-08 |
Family
ID=89020976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320569709.8U Active CN220147514U (en) | 2023-02-06 | 2023-03-22 | Pedal frequency system of electric bicycle center shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220147514U (en) |
-
2023
- 2023-03-22 CN CN202320569709.8U patent/CN220147514U/en active Active
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