CN206664845U - A kind of torque sensor of electric assisted bicycle - Google Patents
A kind of torque sensor of electric assisted bicycle Download PDFInfo
- Publication number
- CN206664845U CN206664845U CN201720374372.XU CN201720374372U CN206664845U CN 206664845 U CN206664845 U CN 206664845U CN 201720374372 U CN201720374372 U CN 201720374372U CN 206664845 U CN206664845 U CN 206664845U
- Authority
- CN
- China
- Prior art keywords
- planar portions
- bearing
- assisted bicycle
- pipe
- electric assisted
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of torque sensor of electric assisted bicycle, including pipe, clutch shaft bearing and second bearing, first and second bearing is respectively positioned in the pipe, the outer ring of first and second bearing is fixed with the pipe, and the inner ring of first and second bearing is used to fix with the axis of the electric assisted bicycle；The pipe lateral surface has the first planar portions and the second planar portions, has the first shape changing detection unit at first planar portions, has the second shape changing detection unit at second planar portions.Sensor of the present utility model can detect the signal of both feet, simple in construction, and production and processing is convenient, and cost is low, installation standardization, and versatility is good.
Description
Technical field
It the utility model is related to electric assisted bicycle field, and in particular to a kind of moment sensing of electric assisted bicycle
Device.
Background technology
On electric assisted bicycle, in order to realize 1：1 assist function, i.e. motor are contributed and manpower tramples output simultaneously
The function of progress, it is necessary to which detection people's pin is supplied to motor driver to the pedal force of pedal in real time, gathers the use of this power at present
Mode be divided into torsion type and pressure type, torsion type is that installation sleeve pipe bears the moment of torsion that pin is stepped on foot-operated axle, and sleeve pipe is being stepped on
Torsional deflection when stepping on, the detection of pedal force is then realized by magnetic field or electric field change.Pressure type is typically in chain position or axle
End face on the outside of installation pressure sensor, detect the pressure that chain tension or pin are stepped on, approximate or indirect collection pin is stepped on to pedal
Legpower.Particularity and existing electronic technology state due to the structure of electric assisted bicycle, existing such moment sensing
Device comes with some shortcomings, the presence one side gathered data of torsion type, the side of chain wheel can not be gathered, because the pedal of chain wheel side
Connected together with chain wheel, moment of torsion can not be delivered on axle, realize that the material of this detection is also expensive inconvenient with processing.Existing pressure
Although power detection realizes bilateral or so pin detection torque function, complicated, installation inconvenience be present, difficulty of processing is big.
Utility model content
Purpose of utility model：A kind of the defects of the utility model is intended to overcome prior art, there is provided electric assisted bicycle
Torque sensor.
Technical scheme：A kind of torque sensor of electric assisted bicycle, including pipe, clutch shaft bearing and second bearing,
First and second bearing is respectively positioned in the pipe, and outer ring and the pipe of first and second bearing are fixed, described first,
The inner ring of two bearings is used to fix with the axis of the electric assisted bicycle；The pipe lateral surface have the first planar portions and
Second planar portions, there is the first shape changing detection unit at first planar portions, there is the second deformation at second planar portions
Detection unit.
Further, the medial surface of the pipe has a circle annular protrusion, and first and second bearing is respectively positioned at annular
Raised both sides.
Further, in first and second planar portions are generally aligned in the same plane.
Further, the plane where two end faces of the clutch shaft bearing intersects with first planar portions；It is described
Plane where two end faces of second bearing intersects with second planar portions.
Further, the first and second shape changing detection unit is resistance strain gage or semiconductor gauge.
Further, first and second planar portions are parallel to each other and symmetrical relative to the horizontal plane where the axis of pipe.
Further, the plane where two end faces of the clutch shaft bearing intersects with first and second planar portions；Or
Plane where two end faces of second bearing described in person intersects with first and second planar portions.
Beneficial effect：The utility model can be used on electric assisted bicycle, possesses electric assisted bicycle and rides
Assist function, realize and take exercise and the characteristics of the vehicles.Compared to existing similar product, the utility model is simple in construction, raw
Produce easy to process, cost is low, and installation standardization, versatility is good, and can realize the detection of both feet.
Brief description of the drawings
Fig. 1 is the sensor schematic of embodiment 1；
Fig. 2 is the sensors sides schematic diagram of embodiment 1；
Fig. 3 is the sensor schematic of embodiment 2.
Embodiment
Reference：1.1 first planar portions；1.2 second planar portions；2 pipes；2.1 annular protrusion；3.1 clutch shaft bearing；
3.2 second bearing；4 axis.
Embodiment 1
As shown in Figure 1, 2, a kind of torque sensor of electric assisted bicycle, including pipe 2, clutch shaft bearing 3.1 and
Two bearings 3.2, first and second bearing are respectively positioned in the pipe, and outer ring and the pipe of first and second bearing are consolidated
Fixed, the inner ring of first and second bearing is used to fix with the axis 4 of the electric assisted bicycle；Mask on the outside of the pipe
There are the first planar portions 1.1 and the second planar portions 1.2, there is the first shape changing detection unit at first planar portions, described second
There is the second shape changing detection unit at planar portions.The medial surface of the pipe has a circle annular protrusion, first and second bearing
It is located at the both sides of annular protrusion respectively.In first and second planar portions are generally aligned in the same plane.Two end faces of the clutch shaft bearing
The plane at place intersects with first planar portions；Plane where two end faces of the second bearing is with described second
Planar portions intersect.The first and second shape changing detection unit is resistance strain gage or semiconductor gauge.
The utility model still uses pressure detecting mode, the detection of left and right pin can be so realized, according to electric boosted
The structure of bicycle, the axis of electric assisted bicycle produce pressure, the correspondence in the outer surface of pipe by bearing to tube wall
Planar portions are done in position, and shape changing detection element is installed in planar portions, can be resistance or semiconductor gauge, or other can examine
Survey the element of deformation.Two pedals are arranged on the both ends of axis 4 by two cranks, when pin firmly steps on pedal, pressure that pin is stepped on
Power is added on bearing 3 by axis 4, and pressure is applied to round tube inner wall by bearing 3, causes planar portions to deform, so as to realize pair
Pin steps on the detection of power, and shape changing detection element produces signal, by amplifying circuit, obtains suitable voltage or current signal, there is provided
To motor driver.As shown in figure 1, when left foot is stepped on, torque is calculated by the detection signal of the first shape changing detection unit；Work as right crus of diaphragm
When stepping on, torque is calculated by the detection signal of the second shape changing detection unit.
Embodiment 2
As shown in figure 3, a kind of torque sensor of electric assisted bicycle, including pipe 2, clutch shaft bearing 3.1 and second
Bearing 3.2, first and second bearing are respectively positioned in the pipe, and outer ring and the pipe of first and second bearing are fixed,
The inner ring of first and second bearing is used to fix with the axis 4 of the electric assisted bicycle；The pipe lateral surface has the
One planar portions 1.1 and the second planar portions 1.2, there is the first shape changing detection unit, second plane at first planar portions
There is the second shape changing detection unit at portion.The medial surface of the pipe has a circle annular protrusion, the first and second bearing difference
Positioned at the both sides of annular protrusion.The first and second shape changing detection unit is resistance strain gage or semiconductor gauge.Described
First, two planar portions are parallel to each other and symmetrical relative to the horizontal plane where the axis of pipe.Two end faces of the clutch shaft bearing
The plane at place intersects with first and second planar portions；Or the plane where two end faces of the second bearing with
First and second planar portions intersect.Two planar portions are arranged on position corresponding to clutch shaft bearing in example shown in Fig. 3, can
Alternatively, two planar portions can also be arranged on opening position corresponding to second bearing.
The utility model still uses pressure detecting mode, the detection of left and right pin can be so realized, according to electric boosted
The structure of bicycle, the axis of electric assisted bicycle produce pressure, the correspondence in the outer surface of pipe by bearing to tube wall
Planar portions are done in position, and shape changing detection element is installed in planar portions, can be resistance or semiconductor gauge, or other can examine
Survey the element of deformation.Two pedals are arranged on the both ends of axis 4 by two cranks, when pin firmly steps on pedal, pressure that pin is stepped on
Power is added on bearing 3 by axis 4, and pressure is applied to round tube inner wall by bearing 3, causes planar portions to deform, so as to realize pair
Pin steps on the detection of power, as shown in figure 3, when left foot is stepped on downwards, the first shape changing detection unit is used to detect data computing power square, when
When right crus of diaphragm is stepped on downwards, clutch shaft bearing can be extruded the second shape changing detection unit by a upward power, so as to the second shape changing detection
Unit is used to detect data computing power square.Shape changing detection element produces signal, by amplifying circuit, obtains suitable voltage or electricity
Flow signal, there is provided to motor driver.
Although the utility model is illustrated and described with regard to preferred embodiment, those skilled in the art should manage
Solution, without departing from claim limited range of the present utility model, the utility model can be carried out various change and
Modification.
Claims (7)
- A kind of 1. torque sensor of electric assisted bicycle, it is characterised in that including pipe, clutch shaft bearing and second bearing, First and second bearing is respectively positioned in the pipe, and outer ring and the pipe of first and second bearing are fixed, described first, The inner ring of two bearings is used to fix with the axis of the electric assisted bicycle；The pipe lateral surface have the first planar portions and Second planar portions, there is the first shape changing detection unit at first planar portions, there is the second deformation at second planar portions Detection unit.
- 2. the torque sensor of electric assisted bicycle according to claim 1, it is characterised in that described first and second is flat In face is generally aligned in the same plane.
- 3. the torque sensor of electric assisted bicycle according to claim 1, it is characterised in that the clutch shaft bearing Plane where two end faces intersects with first planar portions；Plane where two end faces of the second bearing with Second planar portions intersect.
- 4. the torque sensor of electric assisted bicycle according to claim 1, it is characterised in that the inner side of the pipe Face has a circle annular protrusion, and first and second bearing is located at the both sides of annular protrusion respectively.
- 5. the torque sensor of electric assisted bicycle according to claim 1, it is characterised in that first and second shape It is resistance strain gage or semiconductor gauge to become detection unit.
- 6. the torque sensor of electric assisted bicycle according to claim 1, it is characterised in that described first and second is flat Face is parallel to each other, and first and second planar portions are symmetrical relative to the horizontal plane where the axis of pipe.
- 7. the torque sensor of electric assisted bicycle according to claim 1, it is characterised in that the clutch shaft bearing Plane where two end faces intersects with first and second planar portions；Or where two end faces of the second bearing Plane intersects with first and second planar portions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720374372.XU CN206664845U (en) | 2017-04-11 | 2017-04-11 | A kind of torque sensor of electric assisted bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720374372.XU CN206664845U (en) | 2017-04-11 | 2017-04-11 | A kind of torque sensor of electric assisted bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206664845U true CN206664845U (en) | 2017-11-24 |
Family
ID=60381052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720374372.XU Expired - Fee Related CN206664845U (en) | 2017-04-11 | 2017-04-11 | A kind of torque sensor of electric assisted bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206664845U (en) |
-
2017
- 2017-04-11 CN CN201720374372.XU patent/CN206664845U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180615 Address after: No. 6101 Longdong Road, Pudong New Area, Shanghai Patentee after: ZHONGWU PRECISION ELECTRICAL (SHANGHAI) Co.,Ltd. Address before: 225600 lingpo Road, Gaoyou Economic Development Zone, Yangzhou, Jiangsu Patentee before: Zhang Zhigang |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171124 |