CN206218128U - For the torque sensor and detecting system of electric bicycle - Google Patents
For the torque sensor and detecting system of electric bicycle Download PDFInfo
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- CN206218128U CN206218128U CN201621268802.1U CN201621268802U CN206218128U CN 206218128 U CN206218128 U CN 206218128U CN 201621268802 U CN201621268802 U CN 201621268802U CN 206218128 U CN206218128 U CN 206218128U
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- sleeve pipe
- strain
- torque sensor
- axis
- detecting portion
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Abstract
The utility model provides a kind of torque sensor and detecting system for electric bicycle, the torque sensor includes axis, is sheathed on the strain sleeve pipe and transmission sleeve pipe of axis, the strain detecting portion that the strain sleeve pipe is set integrally formed with least two row gaps vertically, the torque sensor also includes the signal processor of the induction coil and the connection induction coil located at the periphery in strain detecting portion.The detecting system includes the torque sensor, the magnet ring being fixed on the axis, strain sleeve pipe or transmission sleeve pipe and is used to detect the Hall sensor of the magnet ring rotating speed.The transmission sleeve pipe can reduce external stress to straining the impact of sleeve pipe, reduce abnormal signal output, it is to avoid the damage of strain sleeve pipe；The strain detecting portion be shaped in strain sleeve pipe on, improve moment of torsion detection accuracy, Stability and dependability, reduce strain sleeve pipe preparation technology difficulty, with preferably in the industry promote and application prospect.
Description
Technical field
The utility model is related to electric bicycle field, more particularly to a kind of torque sensor for electric bicycle and
Detecting system.
Background technology
At this stage, electric bicycle is taken in axis mounting torque sensor more and more so that in ride, energy
The moment of torsion according to measured by is reached to adjust the output power of motor of electric bicycle.It is disclosed in the industry to have a kind of measuring method, lead to
Fixed cover, sliding sleeve and the stage clip being equipped with axis are crossed, magnet ring is set on sliding sleeve, and detects magnet ring by displacement transducer
Rotate and realize detection so that corresponding moment of torsion is converted into electric signal.But above-mentioned torque-measuring apparatus complex structure, and in moment of torsion effect
Low sleeve and magnet ring actual displacement amount are smaller, it is more difficult to measure reliable results.
The method of the moment of torsion of another measurement axis is that in the case where moment of torsion is acted on, the principal stress of generation or master should by detecting axis
Become to realize torque measurement, can both use resistance strain gauge, it is also possible to using the torque sensing based on counter magnetostriction effect
Device.The counter magnetostriction effect refers to that ferrimagnet is changed by mechanical stress, the magnetic conductivity of its material, especially magnetic
The phenomenon that conductance changes.
Amorphous alloy has significant counter magnetostriction effect as a kind of new magnetoelastic material in recent years, passes through
One layer of above-mentioned amorphous alloy material is attached or sprayed on axis, when coordinating Hall element to gather axis different conditions
Torque value.This area also discloses a kind of moment sensor, by setting permeability alloys thin slice on torque sleeve pipe, coordinates outer
What cloth was put is used to detect the coil of heat treatment, and the change of moment of torsion is obtained to detect.But above-mentioned permeability alloys thin slice is necessarily deposited
In seam, permeability alloys thin slice is in uneven torque suffered by seam crossing, and detection signal is unstable；Permeability alloys thin slice attachment process
It is required that higher, it is necessary to permeability alloys thin slice is strictly equably attached into torque sleeve surface, also, long-term reciprocating rotation possibility
Can also cause to be partially stripped, the stability of influence moment of torsion detection.
In consideration of it, being necessary to provide a kind of new torque sensor and detecting system for electric bicycle.
Utility model content
The purpose of this utility model is to provide a kind of torque sensor and detecting system for electric bicycle, can
External stress is reduced to straining the impact of sleeve pipe, abnormal signal output is reduced, it is to avoid the damage of strain sleeve pipe；Moment of torsion is improved simultaneously
The accuracy and stability of detection, reduce the preparation technology difficulty of strain sleeve pipe.
To realize above-mentioned utility model purpose, the utility model provides a kind of torque sensing for electric bicycle
Device, including axis, the strain sleeve pipe of axis and transmission sleeve pipe are sheathed on, the strain sleeve pipe is vertically integrally formed with least two
The strain detecting portion that row gap is set, the strain sleeve pipe is mutually solid with the first fixed part for being fixed to axis and with sleeve pipe is driven
The second fixed fixed part, first fixed part and the second fixed part are described vertically respectively positioned at the two ends in strain detecting portion
Transmission sleeve pipe is formed with the auxiliary section being connected with outside sprocket wheel away from one end of the second fixed part, and the torque sensor is also wrapped
Include the signal processor of the induction coil and the connection induction coil located at the periphery in strain detecting portion.
Used as further improvement of the utility model, the strain detecting portion includes being uniformly arranged along the periphery of strain sleeve pipe
Loxodont, and the bearing of trend of the loxodont in the adjacent strain detecting portion is inconsistent.
Used as further improvement of the utility model, the loxodont is extended in 45 degree vertically, adjacent described to answer
The bearing of trend for becoming the loxodont of test section is perpendicular.
Used as further improvement of the utility model, the vertical cross-section of the loxodont is triangular in shape, trapezoidal or gradually opens
The tooth depth of line tooth form and the loxodont is set to 0.3-0.8mm.
Used as further improvement of the utility model, the width that the strain detecting portion axially extends is more than induction coil
Width, and each strain detecting portion axially extends length and is set to 5-10mm.
Used as further improvement of the utility model, each strain detecting portion is equipped with a groove in both sides vertically.
Used as further improvement of the utility model, the torque sensor also includes being sheathed on determining for strain sleeve pipe periphery
Position bushing and the axle sleeve at the positioning bushing two ends is divided into, the positioning bushing is provided with and strain detecting portion position
Corresponding locating slot, the induction coil winding is arranged in the locating slot.
Used as further improvement of the utility model, the axle sleeve includes the first axle sleeve and the second axle sleeve, the first axle
It is sheathed on the outside of axis and positioned at the strain sleeve pipe away from the side of transmission sleeve pipe, second axle sleeve is sheathed on transmission
The periphery of sleeve pipe, and cause that the axis and transmission sleeve pipe can rotate in the first axle sleeve and the second axle sleeve respectively.
Used as further improvement of the utility model, the torque sensor also includes being arranged at the induction coil periphery
Radome.
Used as further improvement of the utility model, first fixed part is set to ring gear；Second fixed part
It is set to external toothing.
The utility model also provides a kind of detecting system for electric bicycle, including the torque sensor and solid
Due to the axis, magnet ring and magnet ring relative set on sleeve pipe or transmission sleeve pipe are strained to detect the magnet ring rotating speed suddenly
That sensor.
The beneficial effects of the utility model are：The strain sleeve pipe of the utility model torque sensor by be driven sleeve pipe with it is outer
Portion's sprocket wheel is connected, and reduces external stress to straining the mechanical shock of sleeve pipe, reduces abnormal signal output, it is to avoid strain sleeve pipe
Damage；Also, the strain detecting portion be shaped in strain sleeve pipe on, improve moment of torsion detection accuracy, stability with can
By property, the preparation technology difficulty of strain sleeve pipe is reduced.Except this, the detecting system with above-mentioned torque sensor can be according to real-time
The motor output of torque information and velocity information control electric bicycle that detection is obtained, improves experience of riding, with preferable
Promote in the industry and application prospect.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the utility model torque sensor；
Fig. 2 is the decomposition texture schematic diagram of torque sensor in Fig. 1；
Fig. 3 is the structural representation of the strain sleeve pipe of the utility model torque sensor；
Fig. 4 is the structural representation of strain another angle of sleeve pipe in Fig. 3；
Fig. 5 is the overall assembling schematic diagram of the utility model detecting system；
Fig. 6 is the decomposition texture schematic diagram of Fig. 6 detecting systems；
Fig. 7 is the sectional view of detecting system in Fig. 1.
Specific embodiment
The utility model is described in detail below with reference to implementation method shown in the drawings.But the implementation method is not
Limitation the utility model, structure that one of ordinary skill in the art is made according to the implementation method, method or functionally
Conversion is all contained in protection domain of the present utility model.
Fig. 1 to Fig. 7 is referred to for the better embodiment of the utility model one.The torque sensor that the utility model is provided
100 Five-way tubes for being used to be assembled to electric bicycle（It is not shown）Interior, the torque sensor 100 includes axis 10, is sheathed on
The strain sleeve pipe 20 of axis 10 and transmission sleeve pipe 30 and the induction coil 40 being arranged on the outside of the strain sleeve pipe 20.The sense
The uniform winding of coil 40 is answered to be arranged at the periphery in the strain detecting portion 21.
The two ends of the axis 10 are connected with the pedal part of the electric bicycle.The strain sleeve pipe 20 is vertically
Integrally formed with the strain detecting portion 21 that at least two row gaps are set, the strain sleeve pipe 20 also has and is fixed to the of axis 10
One fixed part 22 and second fixed part 23 mutually fixed with transmission sleeve pipe 30, the edge of 22 and second fixed part of the first fixed part 23
Axially respectively positioned at the two ends in strain detecting portion 21.
In the present embodiment, first fixed part 22 is set to ring gear, and the axis 10 corresponds to the ring gear
Position be formed with fixed engaging piece 11 be engaged with the ring gear 22；Second fixed part 23 is set to external toothing,
The transmission sleeve pipe 30 is formed with to be engaged with the external toothing towards one end of the strain sleeve pipe 20 and fixed engages internal tooth
Circle.The axis 10 is also formed with stopping the stopper section 12 that strain sleeve pipe 20 slides axially that the stopper section 12 is set
It is the annulus of radially projection, the annulus is located at side of first engaging piece 11 away from transmission sleeve pipe 30.The transmission sleeve pipe
30 are also formed with the auxiliary section 31 being connected with outside sprocket wheel away from one end of the second fixed part 23, and the auxiliary section 31 is set to
Adapt to the engagement external toothing of outside sprocket wheel.
The strain detecting portion 21 is set to two rows and each strain detecting portion 21 is included along the periphery for straining sleeve pipe 20
The loxodont 211 being uniformly arranged, the bearing of trend of the loxodont 211 in the adjacent strain detecting portion 21 is inconsistent.Should to improve
Become magnetic conductivity changing sensitivity of the surface of sleeve pipe 20 under moment of torsion effect, and then realize optimum detection result, the loxodont 211
It is extended in 45 degree vertically on the surface of strain sleeve pipe 20, the extension of the loxodont 211 in the adjacent strain detecting portion 21
Direction is perpendicular.Both sides are additionally provided with a groove 24 vertically in each strain detecting portion 21.
Preferably, each strain detecting portion 21 axially extends length L and is set to 5-10mm, and the strain inspection
Width of the width that survey portion 21 axially extends more than the induction coil 40 corresponding to it.According to the strain of the strain sleeve pipe 20
The external diameter of test section 21 determines that processing modulus m is 0.3, and then show that the tooth pitch of the loxodont 211 is 0.942mm.Wherein, institute
The vertical cross-section for stating loxodont 211 is triangular in shape, trapezoidal or tooth depth of involute profile and the loxodont 211 is set to
0.3-0.8mm。
The torque sensor 100 also includes being sheathed on the positioning bushing 50 of strain sleeve pipe 20 periphery and is divided into described
First sheath 61 and the second sheath 62 at positioning bushing 50 two ends.The fixing assembling of first sheath, 61 and second sheath 62 is to electricity
In the Five-way tube of dynamic bicycle.The torque sensor 100 also includes being located in the first sheath 61 and the second sheath 62 respectively
First axle sleeve 71 and the second axle sleeve 72, first axle sleeve 71 are sheathed on the outside of axis 10 and are carried on the back positioned at the strain sleeve pipe 20
From the side of transmission sleeve pipe 30, second axle sleeve 72 is sheathed on the periphery of transmission sleeve pipe 30, and causes the axis 10 and pass
Dynamic sleeve pipe 30 can rotate in the first axle sleeve 71 and the second axle sleeve 72 respectively.Thereby, under outside moment loading, the axis 10,
Strain sleeve pipe 20 and transmission sleeve pipe 30 synchronize rotation in the positioning sheath 61 of bushing 50 and first and the second sheath 62.
The positioning bushing 50 is provided with two annular positioning grooves 51 corresponding with the position of strain detecting portion 21.Institute
Stating induction coil 40 includes winding respectively the first induction coil 41 and the second induction coil being arranged in two locating slots
42.There is first induction coil 41 the magnetic field information converting for being detected to be sent to the first holding wire of signal processor
411；There is second induction coil 42 the magnetic field information converting for being detected to be sent to signal processor and secondary signal
Line 421.In the present embodiment, the signal processor is set to be fixed on the circuit board 43 of the positioning inwall of bushing 50.
The torque sensor 100 also includes being arranged at the radome 80 of the periphery of the induction coil 40, the radome
80 pairs of induction coils 40 play magnetic screening action, it is possible to increase the diamagnetic interference performance of the induction coil 40.
The utility model provide simultaneously a kind of detecting system 200 for electric bicycle, including torque sensor 100 with
And the axis 10, strain sleeve pipe 20 or the magnet ring 90 being driven on sleeve pipe 30 and the relative set of magnet ring 90 are fixed on to detect
State the Hall sensor of the rotating speed of magnet ring 90（It is not shown）.In the present embodiment, the magnet ring 90 is directly anchored to the axis 10
Rotated above and simultaneously with the rotation of axis 10；The Hall sensor is fixedly installed on the circuit board 43.The detection
System 200 also includes being used to the speed that the torque information for obtaining the detection of torque sensor 100 and Hall sensor detection are obtained
Harness-integrated the 201 of the outside transmission of information, are further opened with for the harness-integrated through hole 52 walked on the positioning bushing 50,
Harness-integrated 201 end is additionally provided with the connector 202 to be docked with external interface.
In practical application process, bicyclist is rotated by pedaling to spoil part and order about axis 10, and axis 10 orders about strain sleeve pipe 20
And transmission sleeve pipe 30 rotates simultaneously, torque is passed to outside sprocket wheel, and driving electric by transmission sleeve pipe 30 by auxiliary section 31 again
The chain rotation of bicycle.During this, the strain sleeve pipe 20 receives circumferential torsion and circumferential deformation occurs, and then causes described
Magnetic field around induction coil 40 changes, and is transmitted corresponding signal by the first holding wire 411 and secondary signal line 421
To circuit board 43.Meanwhile, the Hall sensor being fixed on circuit board 43 can also real-time detection obtain the rotating speed of axis 10, and lead to
Cross harness-integrated 201 outwards to transmit torque information and velocity information to carry out integrated treatment, and then control electric bicycle
Power of motor is exported, and to improve ride experience, and save energy, extends motor course continuation mileage.
In sum, the strain sleeve pipe 20 of the utility model torque sensor 100 is by being driven sleeve pipe 30 with outside sprocket wheel
It is connected, reduces external stress to straining the mechanical shock of sleeve pipe 20, reduces abnormal signal output, it is to avoid the damage of strain sleeve pipe 20
It is bad.
The strain detecting portion 21 is shaped on strain sleeve pipe 20, reduces the preparation technology difficulty of strain sleeve pipe 20,
And improve accuracy, the Stability and dependability of moment of torsion detection.
Except this, the torque information and velocity information control that the detecting system 200 can be obtained according to real-time detection are electronic
The motor output of bicycle, improvement is ridden experience, with preferably popularization and application prospect in the industry.
It should be understood that, although the present specification is described in terms of embodiments, but not each implementation method only includes one
Individual independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art will should say
Used as an entirety, technical scheme in each implementation method can also be through appropriately combined, and forming those skilled in the art can for bright book
With the other embodiment for understanding.
The a series of tool described in detail only for feasibility implementation method of the present utility model of those listed above
Body illustrates that they are simultaneously not used to limit protection domain of the present utility model, all to be made without departing from the utility model skill spirit
Equivalent implementations or change should be included within protection domain of the present utility model.
Claims (11)
1. a kind of torque sensor for electric bicycle, it is characterised in that：The torque sensor includes axis, is sheathed on
The strain sleeve pipe of axis and transmission sleeve pipe, the strain inspection that the strain sleeve pipe is set integrally formed with least two row gaps vertically
Survey portion, the strain sleeve pipe has the first fixed part and second fixed part mutually fixed with transmission sleeve pipe for being fixed to axis, institute
The first fixed part and the second fixed part are stated vertically respectively positioned at the two ends in strain detecting portion, and the transmission sleeve pipe is solid away from second
The one end for determining portion is formed with the auxiliary section being connected with outside sprocket wheel, and the torque sensor is also included located at strain detecting portion
The induction coil of periphery and the signal processor of the connection induction coil.
2. torque sensor according to claim 1, it is characterised in that：The strain detecting portion is included along strain sleeve pipe
The loxodont that periphery is uniformly arranged, and the bearing of trend of the loxodont in the adjacent strain detecting portion is inconsistent.
3. torque sensor according to claim 2, it is characterised in that：The loxodont sets in 45 degree of extensions vertically
Put, the bearing of trend of the loxodont in the adjacent strain detecting portion is perpendicular.
4. torque sensor according to claim 2, it is characterised in that：The vertical cross-section of the loxodont is in triangle
The tooth depth of shape, trapezoidal or involute profile and the loxodont is set to 0.3-0.8mm.
5. torque sensor according to claim 1, it is characterised in that：The width that the strain detecting portion axially extends
Axially extend length and be set to 5-10mm more than the width of induction coil, and each strain detecting portion.
6. torque sensor according to claim 1, it is characterised in that：Both sides are equal vertically in each strain detecting portion
It is provided with a groove.
7. torque sensor according to claim 1, it is characterised in that：The torque sensor also includes being sheathed on strain
The positioning bushing of sleeve pipe periphery and be divided into the axle sleeve at the positioning bushing two ends, the positioning bushing be provided with it is described should
Become the corresponding locating slot in test section position, the induction coil winding is arranged in the locating slot.
8. torque sensor according to claim 7, it is characterised in that：The axle sleeve includes the first axle sleeve and the second axle
Set, first axle sleeve is sheathed on the outside of axis and positioned at the strain sleeve pipe away from the side of transmission sleeve pipe, described second
Axle sleeve is sheathed on the periphery of transmission sleeve pipe, and causes that the axis and transmission sleeve pipe can respectively in the first axle sleeve and the second axle sleeve
Rotation.
9. torque sensor according to claim 1, it is characterised in that：The torque sensor is also described including being arranged at
The radome of induction coil periphery.
10. torque sensor according to claim 1, it is characterised in that：First fixed part is set to ring gear；Institute
State the second fixed part and be set to external toothing.
A kind of 11. detecting systems for electric bicycle, including the torque sensor as described in claim any one of 1-10,
It is characterized in that：The detecting system also includes the magnet ring and and magnetic that are fixed on the axis, strain sleeve pipe or transmission sleeve pipe
Ring relative set is detecting the Hall sensor of the magnet ring rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621268802.1U CN206218128U (en) | 2016-11-22 | 2016-11-22 | For the torque sensor and detecting system of electric bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621268802.1U CN206218128U (en) | 2016-11-22 | 2016-11-22 | For the torque sensor and detecting system of electric bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206218128U true CN206218128U (en) | 2017-06-06 |
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ID=58791245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621268802.1U Active CN206218128U (en) | 2016-11-22 | 2016-11-22 | For the torque sensor and detecting system of electric bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206218128U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106627964A (en) * | 2016-11-22 | 2017-05-10 | 昆山朗德森机电科技有限公司 | Torque sensor and detecting system for electric bicycle |
| CN110182296A (en) * | 2019-06-28 | 2019-08-30 | 上海云驱智能科技有限公司 | A kind of bicycle middle shaft moment measuring device |
| JP2019177840A (en) * | 2018-03-30 | 2019-10-17 | 株式会社シマノ | Component for human powered vehicle |
| EP3743175A4 (en) * | 2018-01-26 | 2021-10-20 | Michael Grassi | Shaft minimizing ellipticalization strain error |
| WO2022121117A1 (en) * | 2020-12-09 | 2022-06-16 | 宁波麦思动力***有限公司 | Bicycle torque transmission mechanism and system, and electric power-assisted bicycle |
-
2016
- 2016-11-22 CN CN201621268802.1U patent/CN206218128U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106627964A (en) * | 2016-11-22 | 2017-05-10 | 昆山朗德森机电科技有限公司 | Torque sensor and detecting system for electric bicycle |
| EP3743175A4 (en) * | 2018-01-26 | 2021-10-20 | Michael Grassi | Shaft minimizing ellipticalization strain error |
| US11390346B2 (en) | 2018-01-26 | 2022-07-19 | Michael Grassi | Shaft minimizing ellipticalization strain error |
| JP2019177840A (en) * | 2018-03-30 | 2019-10-17 | 株式会社シマノ | Component for human powered vehicle |
| CN110182296A (en) * | 2019-06-28 | 2019-08-30 | 上海云驱智能科技有限公司 | A kind of bicycle middle shaft moment measuring device |
| WO2022121117A1 (en) * | 2020-12-09 | 2022-06-16 | 宁波麦思动力***有限公司 | Bicycle torque transmission mechanism and system, and electric power-assisted bicycle |
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