CN201653611U - Torque sensor - Google Patents
Torque sensor Download PDFInfo
- Publication number
- CN201653611U CN201653611U CN2010201006765U CN201020100676U CN201653611U CN 201653611 U CN201653611 U CN 201653611U CN 2010201006765 U CN2010201006765 U CN 2010201006765U CN 201020100676 U CN201020100676 U CN 201020100676U CN 201653611 U CN201653611 U CN 201653611U
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- magnetic ring
- torque sensor
- hall element
- ring
- outer magnetic
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Abstract
The utility model discloses a torque sensor, which comprises an inner magnetic ring, an outer magnetic ring and a hall element. The inner magnetic ring and the outer magnetic ring are respectively fixed onto a drive wheel of an electric bicycle and a sprocket connecting block connected with a driven wheel, magnetic fields of the inner magnetic ring and the outer magnetic ring are synchronous when in empty load, the hall element is mounted on an electrical support seat and used for generating square signals corresponding to magnetic fields generated by the inner magnetic ring and the outer magnetic ring, power assistance of a driving motor is controlled by determining whether the square signals generate phase difference, magnitude of motor power assistance is continuously varied along with load dimension, and thereby comfortable power-assisted driving feeling is realized.
Description
Technical field
The utility model relates to the electric bicycle field, relates in particular to a kind of torque sensor.
Background technology
The electric bicycle industry development is very rapid, makes that electric bicycle torque sensor domestic and abroad market prospect is very wide.Torque sensor is adopted in American-European, Japanese electric bicycle market all mandatory requirement.Along with the reinforcement of people's environmental consciousness, use the number of electric bicycle more and more, make the demand of electric bicycle torque sensor also along with increase.But there is following defective in the domestic and international electric bicycle torque sensor that adopts at present: the size of motor power-assisted can not change continuously along with loading size, and the power-assisted sense is uncomfortable; Often need radial motion is converted into axially-movable or radial motion is decomposed into complicated radially relative motion in order to gather torque signals, what also have is stage clip with reseting elastic element, makes that the torque sensor size is huge, complex structure, poor stability, and poor with bicycle standard component interchangeability.
The utility model content
In order to address the above problem, the utility model discloses a kind of torque sensor, the sense of solution power-assisted does not accommodate because of gathering torque signals and causes baroque problem.
To achieve these goals, the utility model provides following technical scheme:
A kind of torque sensor is applied on the electric bicycle, comprises internal magnetic ring, outer magnetic ring and Hall element;
On the driving wheel that described internal magnetic ring and described outer magnetic ring are separately fixed at electric bicycle and the sprocket wheel Connection Block that is connected engaged wheel, and both magnetic fields when zero load are synchronous;
Described Hall element is installed in to be used on the electrical equipment supporting seat producing with described internal magnetic ring, outer magnetic ring and produces the corresponding square-wave signal in magnetic field, by judging square-wave signal whether phase differential takes place, and whether the controlling and driving motor power-assisted.
Preferably, described driving wheel is connected by C spring elasticity with described engaged wheel, and the driving wheel that described C spring is used for to skew to take place resets.
Preferably, the square-wave signal of the generation phase differential that the inside and outside magnet ring that described Hall element will obtain produces is converted into voltage signal by controller, and controller is according to the variation drive motor power-assisted of voltage signal.
Preferably, described internal magnetic ring and outer magnetic ring are magnetized to it by special-purpose magnet charger, make inside and outside magnet ring obtain the synchronous bar shaped magnetic field of radial radiation, are consistent in light condition strip magnetic field phase place promptly.
From technique scheme as can be seen, the utility model is installed in the driving wheel and the corresponding square-wave signal of internal magnetic ring on the engaged wheel and outer magnetic ring generation magnetic field of electric bicycle by the Hall element collection, according to judging whether the square-wave signal that both produce the phase differential result takes place, judge whether the drive motor power-assisted, only just realized the moment collection, thereby simplified mounting structure by internal magnetic ring, outer magnetic ring and Hall element.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a structural representation of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the utility model discloses a kind of torque sensor, be applied on the electric bicycle, comprise internal magnetic ring 2, outer magnetic ring 1 and Hall element 3.
Internal magnetic ring 2 is magnetized to it by special-purpose magnet charger with outer magnetic ring 1, make internal magnetic ring 2, outer magnetic ring 1 obtain the strip magnetic field of radial radiation, internal magnetic ring 2 and described outer magnetic ring 1 are separately fixed on the driving wheel and engaged wheel of electric bicycle, and both magnetic fields are synchronous under the assurance light condition, and promptly the magnetic field phase place at light condition internal magnetic ring 2 and outer magnetic ring 1 is consistent.
Described Hall element 3 is installed on the electrical equipment supporting seat 7, internal magnetic ring 2, the inswept Hall element 3 in the magnetic field that is produced of outer magnetic ring 1, Hall element 3 produces and described internal magnetic ring 2, outer magnetic ring 1 produces the corresponding square-wave signal in magnetic field, when zero load, it is the effect that driving wheel 5 and engaged wheel 6 are not subjected to power, internal magnetic ring 2, the corresponding square-wave signal in outer magnetic ring 1 magnetic field is consistent, when loading, it is the effect that driving wheel 5 and engaged wheel 6 are subjected to power, angular displacement takes place in driving wheel 5 relative engaged wheels 6, therefore the magnetic field of the relative outer magnetic ring 1 in magnetic field of internal magnetic ring 2 also is offset, corresponding square-wave signal has also produced phase differential, Hall element 3 is according to the phase differential that square-wave signal produced, controlling and driving motor power-assisted.
Preferably, driving wheel 5 of the present utility model is offset when loading with engaged wheel 6, and the unloading back makes driving wheel 5 get back to initial position with respect to engaged wheel 6 by C spring 4, and C spring one end is fixedlyed connected with driving wheel by special long nut; The C spring other end is fixedlyed connected with sprocket wheel Connection Block 8 by special long nut, and sprocket wheel Connection Block 8 is fixedlyed connected with engaged wheel 6 with sprocket wheel 9.Driving wheel 5 can slide in driven subassembly.When loading, angular displacement takes place in compression C spring driving wheel 5 relative engaged wheels 6, driving wheel 5 and engaged wheel 6 are subjected to the effect of power, angular displacement takes place in driving wheel 5 relative engaged wheels 6, therefore the magnetic field of the relative outer magnetic ring 1 in magnetic field of internal magnetic ring 2 also is offset, corresponding square-wave signal has also produced phase differential, and Hall element 3 is according to the phase differential that square-wave signal produced, controlling and driving motor power-assisted; When zero load, the C spring is with driving wheel 5 and engaged wheel 6 virgin state of rebounding, and drive motor stops power-assisted.
Preferably, Hall element 3 passes to controller with square-wave signal in the foregoing description, by controller square-wave signal is converted into voltage signal, and controller is according to the variation drive motor power-assisted of voltage signal.
In sum, when loading, driving wheel is offset with respect to engaged wheel, skew has also taken place with respect to outer magnetic ring in the corresponding internal magnetic ring that is fixed on the driving wheel, variation has taken place in the magnetic field on the inswept Hall element, the square-wave signal that Hall element produced produces phase differential, and controller is converted into voltage signal according to square-wave signal, by judging that voltage signal changes drive motor and carries out power-assisted.When skew takes place with respect to engaged wheel in driving wheel, connect the C spring generation angular displacement of driving wheel and engaged wheel, be equivalent to hold the power length of spring compressed with one.When zero load, the C spring is with driving wheel and the engaged wheel virgin state of rebounding.
To the above-mentioned explanation of the disclosed embodiments, make this area professional technique user can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning the professional technique user of this area, and defined herein General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (4)
1. a torque sensor is applied to it is characterized in that on the electric bicycle, comprises internal magnetic ring, outer magnetic ring and Hall element;
On the driving wheel that described internal magnetic ring and described outer magnetic ring are separately fixed at electric bicycle and the sprocket wheel Connection Block that is connected engaged wheel, and both magnetic fields when zero load are synchronous;
Described Hall element is installed in to be used on the electrical equipment supporting seat producing with described internal magnetic ring, outer magnetic ring and produces the corresponding square-wave signal in magnetic field, by judging square-wave signal whether phase differential takes place, and whether the controlling and driving motor power-assisted.
2. according to the described torque sensor of claim 1, it is characterized in that described driving wheel is connected by C spring elasticity with the sprocket wheel Connection Block of described engaged wheel, the driving wheel that described C spring is used for to skew to take place resets.
3. according to the described torque sensor of claim 1, it is characterized in that, the square-wave signal of the generation phase differential that the inside and outside magnet ring that described Hall element will obtain produces is converted into voltage signal by controller, and controller is according to the variation drive motor power-assisted of voltage signal.
4. according to the described torque sensor of claim 1, it is characterized in that described internal magnetic ring and outer magnetic ring are magnetized to it by special-purpose magnet charger, make inside and outside magnet ring obtain the synchronous bar shaped magnetic field of radial radiation, is consistent in light condition strip magnetic field phase place promptly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201006765U CN201653611U (en) | 2010-01-25 | 2010-01-25 | Torque sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201006765U CN201653611U (en) | 2010-01-25 | 2010-01-25 | Torque sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201653611U true CN201653611U (en) | 2010-11-24 |
Family
ID=43118853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201006765U Expired - Lifetime CN201653611U (en) | 2010-01-25 | 2010-01-25 | Torque sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201653611U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013097282A1 (en) * | 2011-12-29 | 2013-07-04 | 苏州博菲利电动科技有限公司 | Magnetron torque-induction transmission system |
| CN103542964A (en) * | 2012-07-17 | 2014-01-29 | 耀马车业(中国)有限公司 | Electric bicycle torque sensor |
| CN108427410A (en) * | 2017-02-15 | 2018-08-21 | 苏州宝时得电动工具有限公司 | From mobile device |
-
2010
- 2010-01-25 CN CN2010201006765U patent/CN201653611U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013097282A1 (en) * | 2011-12-29 | 2013-07-04 | 苏州博菲利电动科技有限公司 | Magnetron torque-induction transmission system |
| CN103542964A (en) * | 2012-07-17 | 2014-01-29 | 耀马车业(中国)有限公司 | Electric bicycle torque sensor |
| CN103542964B (en) * | 2012-07-17 | 2015-12-23 | 耀马车业(中国)有限公司 | Electric bicycle moment sensor |
| CN108427410A (en) * | 2017-02-15 | 2018-08-21 | 苏州宝时得电动工具有限公司 | From mobile device |
| CN108427410B (en) * | 2017-02-15 | 2024-04-12 | 苏州宝时得电动工具有限公司 | Self-moving equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101124 |
|
| CX01 | Expiry of patent term |