CN107628186A - Axis torque sensor and electric booster bicycle - Google Patents
Axis torque sensor and electric booster bicycle Download PDFInfo
- Publication number
- CN107628186A CN107628186A CN201710625677.8A CN201710625677A CN107628186A CN 107628186 A CN107628186 A CN 107628186A CN 201710625677 A CN201710625677 A CN 201710625677A CN 107628186 A CN107628186 A CN 107628186A
- Authority
- CN
- China
- Prior art keywords
- element portion
- axis
- rotating shaft
- torque sensor
- shaft assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention provides a kind of axis torque sensor, includes rotating shaft assembly, casing assembly, moving element portion and retaining element portion；Moving element portion includes foil gauge (11)；Moving element portion, retaining element portion are separately mounted to rotating shaft assembly, on casing assembly；Rotating shaft assembly is connected with casing assembly by bearing；Rotating shaft assembly being capable of the circumferentially opposed displacement of opposite shell component generation.Present invention also offers a kind of electric booster bicycle, includes above-mentioned axis torque sensor.Contact and non-contact problem when the present invention solves strain measurement torque signals with wireless power, so that moving element portion and contacting in retaining element portion incorporeity structure when dynamic measures torque, waterproof can use respective proof mechanism of water, the waterproof between sound part need not be done, is easy to make.
Description
Technical field
The present invention relates to electric bicycle accessories field, in particular it relates to which a kind of axis torque sensor and electric power-assisted are certainly
Driving.
Background technology
In the prior art, employ torque sensor electric booster bicycle ride be comfortable on, easily, it is smooth, follow
Property is good, and grade climbing performance is excellent against the wind, and the significant advantage that moment-assistant is ridden is environmental protection and energy saving：Due to the participation of manpower, reduce
The power consumption of this vehicle-mounted finite energy resource of lithium battery.Compared with pure motorized motions, in the case of identical course continuation mileage,
Battery capacity can reduce half, and power, weight, cost can greatly reduce needed for motor.The power used more at present based on more than
Square sensing has following several typical ways：1st, installed on axis, produce axial displacement using torque, detected axially using Hall
Displacement obtains torque signals；2nd, installed on axis, using foil gauge, foil gauge is supplied electricity to using collector ring, using collector ring
Output signal；3rd, installed on axis, there is spline on output shaft, two groups of spline relative positions become when output shaft reverses
To change, the magnetic induction of two groups of coils thereon changes, and the change of magnetic induction is converted to voltage signal by coil, from
And obtain torque signals.
, it is necessary to supply electricity to foil gauge using collector ring, output torque is believed in the torque sensor structure using foil gauge
Number, such torque sensor still suffers from problems with the prior art：1st, collector ring and brush friction are powered in rotation process
And collection signal, the signal fluctuation of collection is easily caused, there is the fluctuation signal generation of malfunction；2nd, due to using collector ring power supply and
Gather that signal useful life longevity is bad, using the powder that abrasion or abrasion are had after long, be easily caused distorted signals；3rd, to ring
Border requires higher, and the water proof and dust proof between the sound of collector ring and brush rotation process is not easily achieved.
The content of the invention
For in the prior art the defects of, it is an object of the invention to provide a kind of axis torque sensor and electric power-assisted voluntarily
Car.
According to axis torque sensor provided by the invention, comprising rotating shaft assembly, casing assembly, moving element portion and
Retaining element portion；
Moving element portion includes foil gauge；
Moving element portion, retaining element portion are separately mounted to rotating shaft assembly, on casing assembly；
Rotating shaft assembly is connected with casing assembly by bearing；
Rotating shaft assembly being capable of the circumferentially opposed displacement of opposite shell component generation.
Preferably, moving element portion includes secondary coil, and retaining element portion includes primary coil；
Secondary coil and primary coil arranged concentric；
Secondary coil collectively forms Current Mutual Inductance system with primary coil；
Secondary coil is located in same closed-loop path with foil gauge.
Preferably, moving element portion is also comprising secondary PCB and secondary coil frame, retaining element portion also comprising primary side PCB with
Primary coil frame；
Rotating shaft assembly and casing assembly arranged concentric；
Secondary coil, secondary PCB are fixed on rotating shaft assembly by secondary coil frame；
Primary coil, primary side PCB are fixed on casing assembly by primary coil frame；
Secondary coil, primary coil are connected with secondary PCB, primary side PCB respectively.
Preferably, primary side PCB includes the first signal generation module, wherein, the first signal generation module is according to primary side
Coil current changing value generates torque signals.
Preferably, the secondary PCB includes bluetooth module；The bluetooth module includes：
Secondary signal generation module：Torque signals are generated according to foil gauge increased resistance value；
Signal transmitting module：Send torque signals；
The primary side PCB includes signal receiving module, wherein, signal receiving module receives the power from signal transmitting module
Square signal.
Preferably, also comprising magnet ring and Hall sensor；
Magnet ring is arranged on secondary coil frame, and Hall sensor is arranged on primary side PCB；
Position of the magnet ring with Hall sensor on rotating shaft assembly axial direction is corresponding.
Preferably, the rotating shaft assembly includes BB axis and output shaft；
Output sleeve is connected on BB axis, and the both ends of output shaft in axial direction form fixing end and free end；
The fixing end and the circumferentially fixed connection of BB axis；
Foil gauge is arranged on output shaft.
Preferably, retaining element portion includes five logical, output bearing nuts and axis nut；
Output bearing nut, axis nut are fastened on five logical both ends in axial direction respectively；
The Inner Constitution article containing space in retaining element portion；Moving element portion and retaining element portion are located in article containing space；
The fixing end of output shaft is located in article containing space, and free end is located at outside article containing space.
Preferably, the fixing end of BB axis and output shaft is connected by spline.
Present invention also offers a kind of electric booster bicycle, includes above-mentioned axis torque sensor.
Compared with prior art, the present invention has following beneficial effect：
1st, contact and non-contact problem when the present invention solves strain measurement torque signals with wireless power so that
Moving element portion and contacting in retaining element portion incorporeity structure, waterproof can use respective waterproof during dynamic measurement torque
Mechanism, it is not necessary to do the waterproof between sound part, be easy to make；
2nd, moving element portion of the present invention and retaining element portion are contactless, and what the formula structure of avoiding contact with easily occurred connects
It is tactile bad, cause the phenomenon of swinging of signal；
3rd, moving element portion of the present invention and retaining element portion are contactless, improve use it is durable, will not be because connecing
Tactile friction causes product failure.
Brief description of the drawings
The detailed description made by reading with reference to the following drawings to non-limiting example, further feature of the invention,
Objects and advantages will become more apparent upon：
Fig. 1 is sectional structure chart of the present invention.
Shown in figure：
The output shaft 9 of output shaft nut 1
The output shaft bearing 10 of BB axis 2
The foil gauge 11 of axis nut 3
The secondary PCB12 of primary coil 4
Magnet ring 5 five logical 13
The primary side PCB14 of secondary coil 6
The Hall sensor 141 of primary coil frame 7
The secondary coil frame 15 of bottom bracket bearing 8
Embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
As shown in figure 1, in embodiment, sensor for axle provided by the invention includes rotating shaft assembly, casing assembly, activity
Element portion and retaining element portion.Casing assembly includes five logical 13, output shaft 9 and holds nut and axis nut 3, and output shaft 9 is held
Nut, axis nut 3 are fastened on five logical 13 both ends in axial direction respectively, wherein, end where output shaft 9 holds nut is designated as a left side
End, axis nut 3 are designated as right-hand member.The Inner Constitution article containing space of casing assembly, moving element portion is with retaining element portion positioned at appearance
In object space.Rotating shaft assembly includes BB axis 2 and output shaft 9, and output shaft 9 is socketed on BB axis 2, and output shaft 9 is vertically
The both ends in direction form fixing end and free end, fixing end are located in article containing space, and circumferentially fixed by spline with BB axis 2
Connection；Free end is extended to outside article containing space, and free circumference slide fit, on BB axis 2, free end is used to bear outside bear
Carry.Rotating shaft assembly includes output shaft bearing 10 and bottom bracket bearing 8 with casing assembly by bearing arranged concentric, bearing：Output
The Internal and external cycle of axle bearing 10 is connected with output shaft 9, output shaft nut 1 respectively, and output shaft nut 1 is in axial direction by output shaft axle
10 are held to be fixed on the shaft shoulder of output shaft 9；The Internal and external cycle of bottom bracket bearing 8 is connected with BB axis 2, axis nut 3 respectively, axis spiral shell
Bottom bracket bearing 8 is in axial direction fixed on the shaft shoulder of BB axis 2 by mother 3.In preference, the fixing end of output shaft 9 and BB axis 2
It can also be and carried out by flat key circumferentially fixed, but because junction is in article containing space, flat key structure installation is not square enough
Just, and spline it is circumferentially fixed relatively reliable.
Moving element portion, retaining element portion are separately mounted to rotating shaft assembly, on casing assembly, and moving element portion includes should
Become piece 11, secondary coil frame 15, secondary coil 6, secondary PCB12；Retaining element portion include primary coil frame 7, primary coil 4,
Primary side PCB14.Secondary coil 6, secondary PCB12 are fixed on rotating shaft assembly by secondary coil frame 15, primary coil 4, original
Side PCB14 is fixed on casing assembly by primary coil frame 7, secondary coil 6, primary coil 4 respectively with secondary PCB12, original
Side PCB14 is connected.Secondary coil 6 and the arranged concentric of primary coil 4, and Current Mutual Inductance system is collectively formed, outside alternating source
When connecting primary side PCB14, primary coil 4 obtains electric and produces alternating magnetic field, and secondary coil 6 senses electric, and foil gauge 11 sticks on
On output shaft 9, and it is located at secondary coil 6 in same closed-loop path.When external loading is carried in the free end of output shaft 9
When, drive BB axis 2 to rotate by spline, output shaft 9 is distorted deformation, is sticked on so as to cause on output shaft 9
The change of the resistance of foil gauge 11, the electric current of the place closed-loop path of foil gauge 11 changes, and then passes through Current Mutual Inductance system
So that electric current changes in primary coil 4.Primary side PCB14 includes the first signal generation module, the first signal generation mould
Root tuber generates torque signals according to the current variation value of primary coil 4.In change case, secondary PCB12 includes bluetooth module, the bluetooth
Module includes：Secondary signal generation module：Torque signals are generated according to the increased resistance value of foil gauge 11；Signal transmitting module：Hair
Send torque signals.Primary side PCB14 includes signal receiving module, and signal receiving module receives the torque letter from signal transmitting module
Number.So the present invention, which just directly can switch through the increased resistance value of foil gauge 11, becomes torque signals, primary coil 4 and secondary coil
6 simply play power supply function.In preference, moving element portion, which can also be, to be entirely located on output shaft 9, but the structure can be led
More crowded in cause article containing space, assembling becomes trouble.
In embodiment, magnet ring 5 is mounted with secondary coil frame 15, Hall sensor 141 is installed on primary side PCB14,
Position of the magnet ring 5 with Hall sensor 141 on rotating shaft assembly axial direction is corresponding, and the structure steps on frequency for detection speed
Signal.
Present invention also offers a kind of electric booster bicycle, includes above-mentioned axis torque sensor.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring the substantive content of the present invention.In the case where not conflicting, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (10)
1. a kind of axis torque sensor, it is characterised in that comprising rotating shaft assembly, casing assembly, moving element portion and consolidate
Determine element portion；
Moving element portion includes foil gauge (11)；
Moving element portion, retaining element portion are separately mounted to rotating shaft assembly, on casing assembly；
Rotating shaft assembly is connected with casing assembly by bearing；
Rotating shaft assembly being capable of the circumferentially opposed displacement of opposite shell component generation.
2. axis torque sensor according to claim 1, it is characterised in that moving element portion includes secondary coil (6),
Retaining element portion includes primary coil (4)；
Secondary coil (6) and primary coil (4) arranged concentric；
Secondary coil (6) collectively forms Current Mutual Inductance system with primary coil (4)；
Secondary coil (6) is located in same closed-loop path with foil gauge (11).
3. axis torque sensor according to claim 2, it is characterised in that moving element portion also includes secondary PCB
(12) with secondary coil frame (15), retaining element portion is also comprising primary side PCB (14) and primary coil frame (7)；
Rotating shaft assembly and casing assembly arranged concentric；
Secondary coil (6), secondary PCB (12) are fixed on rotating shaft assembly by secondary coil frame (15)；
Primary coil (4), primary side PCB (14) are fixed on casing assembly by primary coil frame (7)；
Secondary coil (6), primary coil (4) are connected with secondary PCB (12), primary side PCB (14) respectively.
4. axis torque sensor according to claim 3, it is characterised in that primary side PCB (14) gives birth to comprising the first signal
Into module, wherein, the first signal generation module generates torque signals according to primary coil (4) current variation value.
5. axis torque sensor according to claim 3, it is characterised in that the secondary PCB (12) includes bluetooth mould
Block；The bluetooth module includes：
Secondary signal generation module：Torque signals are generated according to foil gauge (11) increased resistance value；
Signal transmitting module：Send torque signals；
The primary side PCB (14) includes signal receiving module, wherein, signal receiving module receives the power from signal transmitting module
Square signal.
6. axis torque sensor according to claim 3, it is characterised in that also comprising magnet ring (5) and Hall sensor
(141)；
Magnet ring (5) is arranged on secondary coil frame (15), and Hall sensor (141) is arranged on primary side PCB (14)；
Position of the magnet ring (5) with Hall sensor (141) on rotating shaft assembly axial direction is corresponding.
7. axis torque sensor according to claim 1, it is characterised in that the rotating shaft assembly includes BB axis
(2) with output shaft (9)；
Output shaft (9) is socketed on BB axis (2), and the both ends of output shaft (9) in axial direction form fixing end and free end；
The fixing end and BB axis (2) circumferentially fixed connection；
Foil gauge (11) is arranged on output shaft (9).
8. axis torque sensor according to claim 7, it is characterised in that retaining element portion includes five logical (13), defeated
Go out bearing nut (1) and axis nut (3)；
Output bearing nut (1), axis nut (3) are fastened on the five logical both ends of (13) in axial direction respectively；
The Inner Constitution article containing space in retaining element portion；Moving element portion and retaining element portion are located in article containing space；
The fixing end of output shaft (9) is located in article containing space, and free end is located at outside article containing space.
9. axis torque sensor according to claim 8, it is characterised in that the fixation of BB axis (2) and output shaft (9)
End is connected by spline.
10. a kind of electric booster bicycle, it is characterised in that include the axis moment sensing any one of claim 1 to 9
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710625677.8A CN107628186A (en) | 2017-07-27 | 2017-07-27 | Axis torque sensor and electric booster bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710625677.8A CN107628186A (en) | 2017-07-27 | 2017-07-27 | Axis torque sensor and electric booster bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107628186A true CN107628186A (en) | 2018-01-26 |
Family
ID=61099607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710625677.8A Pending CN107628186A (en) | 2017-07-27 | 2017-07-27 | Axis torque sensor and electric booster bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107628186A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108609102A (en) * | 2018-05-07 | 2018-10-02 | 重庆三叶花科技有限公司 | Signal transmission system for axis moment measuring device |
| CN108609103A (en) * | 2018-05-07 | 2018-10-02 | 重庆三叶花科技有限公司 | Axle of electric boosting vehicle torque measuring method |
| CN108627293A (en) * | 2018-05-07 | 2018-10-09 | 重庆三叶花科技有限公司 | Deformation bridge structure for axis moment measuring device |
| CN108688765A (en) * | 2018-05-07 | 2018-10-23 | 重庆三叶花科技有限公司 | The method for transmitting signals of axis moment measuring device |
| CN109163740A (en) * | 2018-10-12 | 2019-01-08 | 孙书新 | A kind of sensor being installed on electrical bicycle middle shaft middle position |
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|---|---|---|---|---|
| CN101279629A (en) * | 2008-05-27 | 2008-10-08 | 谢炎民 | Electric bicycle wheel disc for non-contact power torque measurement |
| CN203274988U (en) * | 2013-05-27 | 2013-11-06 | 深圳市森浦精机科技有限公司 | Central shaft moment measurement apparatus |
| US20140000386A1 (en) * | 2012-06-28 | 2014-01-02 | Honeywell International Inc. | Single ear stator antenna for wireless torque measurement system |
| CN103523149A (en) * | 2012-07-04 | 2014-01-22 | 南京东玫和创科技有限公司 | Wireless torque transducer of electric bicycle |
| CN104276251A (en) * | 2014-10-31 | 2015-01-14 | 太仓市荣驰电机有限公司 | Torque sensing system for middle shaft of electric vehicle |
| CN104655340A (en) * | 2015-03-20 | 2015-05-27 | 北京轻客智能科技有限责任公司 | Torque sensor module based on wireless power supplying and wireless signal transmission |
| EP2894088A1 (en) * | 2014-01-10 | 2015-07-15 | Samsung Electro-Mechanics Co., Ltd. | Insulator and torque sensing device having the same |
| CN105793152A (en) * | 2014-01-20 | 2016-07-20 | 日立汽车系统株式会社 | Rotating body noncontact power feeding device and torque sensor |
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2017
- 2017-07-27 CN CN201710625677.8A patent/CN107628186A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101279629A (en) * | 2008-05-27 | 2008-10-08 | 谢炎民 | Electric bicycle wheel disc for non-contact power torque measurement |
| US20140000386A1 (en) * | 2012-06-28 | 2014-01-02 | Honeywell International Inc. | Single ear stator antenna for wireless torque measurement system |
| CN103523149A (en) * | 2012-07-04 | 2014-01-22 | 南京东玫和创科技有限公司 | Wireless torque transducer of electric bicycle |
| CN203274988U (en) * | 2013-05-27 | 2013-11-06 | 深圳市森浦精机科技有限公司 | Central shaft moment measurement apparatus |
| EP2894088A1 (en) * | 2014-01-10 | 2015-07-15 | Samsung Electro-Mechanics Co., Ltd. | Insulator and torque sensing device having the same |
| CN105793152A (en) * | 2014-01-20 | 2016-07-20 | 日立汽车系统株式会社 | Rotating body noncontact power feeding device and torque sensor |
| CN104276251A (en) * | 2014-10-31 | 2015-01-14 | 太仓市荣驰电机有限公司 | Torque sensing system for middle shaft of electric vehicle |
| CN104655340A (en) * | 2015-03-20 | 2015-05-27 | 北京轻客智能科技有限责任公司 | Torque sensor module based on wireless power supplying and wireless signal transmission |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108609102A (en) * | 2018-05-07 | 2018-10-02 | 重庆三叶花科技有限公司 | Signal transmission system for axis moment measuring device |
| CN108609103A (en) * | 2018-05-07 | 2018-10-02 | 重庆三叶花科技有限公司 | Axle of electric boosting vehicle torque measuring method |
| CN108627293A (en) * | 2018-05-07 | 2018-10-09 | 重庆三叶花科技有限公司 | Deformation bridge structure for axis moment measuring device |
| CN108688765A (en) * | 2018-05-07 | 2018-10-23 | 重庆三叶花科技有限公司 | The method for transmitting signals of axis moment measuring device |
| CN109163740A (en) * | 2018-10-12 | 2019-01-08 | 孙书新 | A kind of sensor being installed on electrical bicycle middle shaft middle position |
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Legal Events
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180126 |
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| RJ01 | Rejection of invention patent application after publication |