CN208616144U - A kind of foot-operated force measuring device of electric assisted bicycle - Google Patents
A kind of foot-operated force measuring device of electric assisted bicycle Download PDFInfo
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- CN208616144U CN208616144U CN201820637739.7U CN201820637739U CN208616144U CN 208616144 U CN208616144 U CN 208616144U CN 201820637739 U CN201820637739 U CN 201820637739U CN 208616144 U CN208616144 U CN 208616144U
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- chain
- sprocket wheel
- shell
- fixing axle
- foot
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Abstract
The utility model discloses the foot-operated force measuring devices of electric assisted bicycle, including shell, the first sprocket wheel, fixing axle and the strain gauge transducer that are arranged on shell；First sprocket wheel is rotatably arranged in fixing axle, and strain gauge transducer is arranged on the axial shell of fixation；The chain or belt of electric assisted bicycle bypass the first sprocket wheel when at the first sprocket wheel shape have angle, the first sprocket wheel by chain or belt driving and rotate.The foot-operated force measuring device of the utility model uses strain gauge transducer, in driver's pushes pedals, cause the chain tension by chain wheel top, the chain of tensioning forms a resultant force at the first sprocket wheel, this drives fixing axle adjacent domain that miniature deformation occurs with joint efforts, strain gauge transducer detects this deformation size, and motor control assembly implements power-assisted according to deformation size.The sensor cost of electric assisted bicycle can be greatly reduced in the present apparatus, while the accuracy and reliability of sensor can be improved.
Description
Technical field
The utility model relates to a kind of foot-operated force measuring devices of electric assisted bicycle, belong to electric assisted bicycle skill
Art field.
Background technique
It requires to be controlled according to the movement velocity of bicycle or by force information by electric machine controller using the bicycle of power-assisted
Motor provides power-assisted for bicycle, it is therefore desirable to using various detection cycling speed or the measuring device of stress, still
Dedicated torque sensor price is more expensive, and the accuracy and reliability of sensor is not high.
Utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies of existing technologies, and it is electric boosted voluntarily to provide one kind
The foot-operated force measuring device of vehicle, is greatly reduced the sensor cost of electric assisted bicycle, while the standard of sensor can be improved
True property and reliability.
In order to solve the above technical problems, the utility model provides a kind of foot-operated force measuring device of electric assisted bicycle,
It is characterized in that including shell, the first sprocket wheel, fixing axle and the strain gauge transducer that are arranged on shell；First sprocket wheel can be rotated
Ground is arranged in fixing axle, and strain gauge transducer is arranged on the axial shell of fixation；The chain of electric assisted bicycle or
Belt bypass the first sprocket wheel when at the first sprocket wheel shape have angle, the first sprocket wheel by chain or belt driving and rotate.
The electric signal that strain gauge transducer will test is sent to electric machine controller, and electric machine controller control motor output phase is answered
Torque, transmission device is directed or through by motor and drives wheel to walk indirectly.
The strain gauge transducer is arranged around fixing axle and when the first sprocket wheel is drawn by chain/belt tension
Shell is played to occur in surface or the interlayer of elastically-deformable shell.
Strain gauge transducer is set as single or multiple independent strain gauge transducers, or semi-bridge type or complete has been formed in inside
The integrated-type strain gauge transducer of bridge type.
Groove or hollow out notch are set on the axial shell of fixation.
A limiting device is arranged in corresponding fixing axle axial position inside housings and/or on housing cover.
When foot pedal is by being more than preset maximum pedal force, chain or belt by the first sprocket wheel tend to flat
State, to protect shell and/or fixing axle not to continue to deformation.
In wheel hub driving or middle motor form when the mode of motor direct-drive axis, engaged with chain wheel periphery
Chain or belt are engaged further around chain wheel is returned with chain wheel periphery around flywheel, the first sprocket wheel being mounted in fixing axle.
The second sprocket wheel is also set up on shell, when motor passes through the second sprocket wheel drive chain in middle motor form, with
Chain wheel periphery engagement chain or belt around flywheel, motor driven rotate the second sprocket wheel, be mounted in fixing axle first
Sprocket wheel is engaged further around chain wheel is returned with chain wheel periphery.
Elastic material is at least partly used between fixing axle and shell.
First sprocket wheel is with gear with teeth or not toothed pulley.
Deformation region around fixing axle, fixing axle and strain gauge transducer are arranged to independent pedal force measurement module,
And the pedal force measurement module is fixed on shell.
It further include the front shroud and back shroud for being respectively assembled at shell two sides, the front shroud and back shroud by the first chain
Wheel, fixing axle and strain gauge transducer are enclosed in wherein；Passing through of can accommodating that chain passes through is provided on the front shroud or back shroud
Mouthful.
The utility model it is achieved the utility model has the advantages that
The foot-operated force measuring device of the utility model causes to pass through using strain gauge transducer in driver's pushes pedals
The chain tension on chain wheel top, the chain of tensioning form a resultant force at the first sprocket wheel, this drives fixing axle adjacent domain with joint efforts
Miniature deformation occurs, strain gauge transducer detects this deformation size, and motor control assembly implements power-assisted according to deformation size.This
The sensor cost of electric assisted bicycle can be greatly reduced in device, while the accuracy of sensor and reliable can be improved
Property.
Detailed description of the invention
Fig. 1 is the electric assisted bicycle schematic diagram using utility model device；
Fig. 2 is pedal force measuring device schematic diagram；
Fig. 3 is foot-operated force measuring device stereoscopic schematic diagram；
Strain gauge transducer schematic view of the mounting position when Fig. 4 is built-in motor form；
Multi-disc strain gauge transducer schematic view of the mounting position when Fig. 5 is built-in motor form；
Fig. 6 is the annular groove schematic diagram around fixing axle on shell；
Fig. 7 is the strip groove schematic diagram around fixing axle on shell；
Fig. 8 is the assembling schematic diagram of shell and front shroud；
Fig. 9 is the assembling schematic diagram of shell and back shroud.
Specific embodiment
The utility model is further described with reference to the accompanying drawing.Following embodiment is only used for clearly illustrating this
The technical solution of utility model, and cannot be used as a limitation the limitation protection scope of the utility model.
In conjunction with shown in Fig. 1-Fig. 9, a kind of foot-operated force measuring device includes shell 1, front shroud 2, back shroud 3, the first sprocket wheel
4, fixing axle 5 and strain gauge transducer 6.First sprocket wheel 4 is rotatably arranged in fixing axle 5, and fixing axle 5 is fixed on shell
On body 1, have angle around the chain on chain wheel top by shape at the first sprocket wheel 4 and the first sprocket wheel 4 in fixing axle 5, the
One sprocket wheel 4 by 7/ belt of chain driving and rotate.
The electric signal that strain gauge transducer 6 will test is sent to electric machine controller, and electric machine controller controls motor output phase
The torque answered, torque directs or through deceleration device and acts on 7/ belt of chain, or acts on wheel.Motor can be with
The mode for taking The gear deceleration, such as parallel shaft (speed) reducer or planet wheel decelerator.
In other embodiments, fixing axle 5 can also be integrally machined with shell 1.
Strain gauge transducer 6 is positioned adjacent to fixing axle 5 and when the first sprocket wheel 4 is caused by 7/ belt tension of chain
Shell 1 occurs in surface or the interlayer of obvious elastically-deformable shell 1, and to protect sensor and its circuit, (waterproof prevents directly rushing
It hits).
Strain gauge transducer 6 is set as single or multiple independent strain gauge transducers 6, or it is internal formed semi-bridge type or
The integrated-type strain gauge transducer 6 of bridge-type, and related circuit is added in control circuit, to improve reliability, the spirit of system
Sensitivity and resisting temperature change performance.Multiple strain gauge transducers 6 can be dispersed in the region that fixing axle 5 is neighbouring on shell 1, can also
To stack.
Front shroud 2 and back shroud 3 are respectively assembled at the two sides of shell 1, and the first sprocket wheel 4, fixing axle 5 and strain-type are sensed
Device 6 is enclosed in wherein.Be provided on front shroud 2 or back shroud 3 can accommodate that chain 7 passes through by mouth 22.
After front shroud 2 and shell 1 assemble, the elongated end forward 51 of fixing axle 5 is inserted into the front limit hole 21 of front shroud 2.Before
Limit hole 21 limits 5 radial motion range of fixing axle, to prevent shell 1 from excessive deformation occurs.
After back shroud 3 and shell 1 assemble, the rear limit hole 31 of the 52 insertion back shroud 3 of end that extends back of fixing axle 5.Afterwards
Limit hole 31 limits 5 radial motion range of fixing axle, to prevent shell 1 from excessive deformation occurs.
To be conducive to shell 1, deformation occurs near fixing axle 5, preferably, being arranged on the shell 1 around fixing axle 5
Groove 11 or hollow out notch.
Groove 11 can be for around the annular 111 of fixing axle 5, or the bar shaped 112 being arranged in around fixing axle 5,
Preferably, 112 groove of bar shaped is placed perpendicular to the direction of resultant force F.
The working principle of foot-operated force measuring device: driver's pushes pedals cause to be tensioned by the chain 7 on chain wheel top,
Two tangential directions tool of the chain 7 of tensioning at the first sprocket wheel 4 along the first sprocket wheel 4 is there are two force component f1, f2 is tensioned, this two
A tensioning force component f1, f2 forms a resultant force F at the first sprocket wheel 4, this resultant force F acts on its fixing axle 5 by the first sprocket wheel 4
On, fixing axle 5 is fixed on shell 1, so fixing axle 5 will drive neighbouring shell 1 and deform.Therefore resultant force F drives fixation
(small) deformation occurs for 5 adjacent domain of axis, and detects this deformation size, motor control assembly root by strain gauge transducer 6
Implement power-assisted according to deformation size.
A limiting device is arranged on 1 inside of shell and/or 1 cover board of shell in corresponding 5 axial position of fixing axle, when chain 7 closes
When power exceeds preset value, the movement of limiting device limitation fixing axle 5 is to prevent shell 1 that further deformation occurs.
Elastic material is used between fixing axle 5 and shell 1, at least partly to prevent excessive chain 7 from acting on generation
Resultant force F is rigidly loaded on shell 1, causes shell 1 that expendable deformation occurs.
In other embodiments, fixing axle 5,5 surrounding deformation region of fixing axle and strain gauge transducer 6 can also be set
It is set to independent pedal force measurement module, is then attached on shell 1.
Increase chain 7 or belt and the sprocket engagement number of teeth or and pulley preferably, being arranged in any section of chain 7 or belt
The tensioning apparatus 101 of contact area.
The kind of drive can also use the kind of drive of belt in other embodiments.The kind of drive of belt has low
Noise, non-maintaining advantage.
First sprocket wheel 4 can be with gear with teeth, be also possible to not toothed pulley.Preferably, being driven using belt
When mode, the first sprocket wheel 4 uses not toothed pulley, and when using 7 kind of drive of chain, the first sprocket wheel 4 uses gear.
Use built-in motor in the present embodiment, i.e. motor (include deceleration device) is placed at axis and driver, sensor
Etc. integrating, but the utility model is also applied for the form using In-wheel motor driving front-wheel or rear-wheel.It is set in
When motor, preferably, also setting up second sprocket wheel 8 that rotation is driven by motor, the chain engaged with 9 periphery of chain wheel on shell 1
Item 7 bypasses the upper periphery of the first sprocket wheel 4, the lower, outer perimeter of the second sprocket wheel 8,10 periphery of flywheel, further around chain wheel 9 is returned, with chain wheel 9
Periphery engagement.It is highly preferred that the chain or belt engaged with 9 periphery of chain wheel bypasses flywheel 10, is mounted on when using built-in motor
The first sprocket wheel 4 in fixing axle 5 engages, motor directly drives through speed reduction gearing 104 further around chain wheel 9 is returned with 9 periphery of chain wheel
Dynamic axis 102, this form keep integrating device more compact succinct, reduce cost, improve reliability.
It is close in trend by 7/ belt of chain of the first sprocket wheel 4 when foot pedal is by being more than preset maximum pedal force
Straightened condition, to protect shell 1 and/or fixing axle 5 not to continue to deformation.It, can due to the shell material softer using elasticity
Larger deformation is generated, when the first sprocket wheel 4 is when under chain acts on by biggish power, 5 periphery shell 1 of fixing axle will generate enough
Big deformation, chain 7 tends to be straight at this time.Therefore, the first sprocket wheel 4 is between flywheel 10 and chain wheel 9 or the second sprocket wheel 8 and chain wheel
Between 9, as long as support one is slightly less than the angle of 180 degree, so that it may detect pedal force.And pedal force it is very big when, shell 1 occur
Deformation, chain 7 tend to be straight, and shell 1 does not continue to deformation, to protect shell 1.
Preferably, foot-operated force measuring device, motor, motor reducer and electric machine controller etc. can also be integrated in together
In one shell, integrated form bicycle power-assisted device is formed.
This integrated form bicycle power-assisted device also can integrate axis 102, and axis 102 connects chain wheel 9 and crank 103.It is excellent
One-way clutch is arranged between chain wheel 9 and crank 103 in selection of land.
It is preferably set up between motor reducer output end and the second sprocket wheel in integrated form bicycle power-assisted device unidirectional
Clutch, the one-way clutch are conducive to bicycle when motor cannot provide power-assisted, mitigate the burden of riding of bicyclist.
The foot-operated force measuring device of the utility model can be applied to two-wheeled, three-wheel pedal bicycle or it is hand voluntarily
Vehicle can also be applied to the foot pedal apparatus such as water cycle.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvement and deformations can also be made, these change
It also should be regarded as the protection scope of the utility model into deformation.
Claims (10)
1. a kind of foot-operated force measuring device of electric assisted bicycle, characterized in that including shell, be arranged on shell first
Sprocket wheel, fixing axle and strain gauge transducer；First sprocket wheel is rotatably arranged in fixing axle, and strain gauge transducer setting is solid
On fixed axial shell；A folder is formed when the chain or belt of electric assisted bicycle bypass the first sprocket wheel at the first sprocket wheel
Angle, the first sprocket wheel by chain or belt driving and rotate.
2. a kind of foot-operated force measuring device of electric assisted bicycle according to claim 1, characterized in that the strain
Formula sensor is arranged around fixing axle and when the first sprocket wheel is caused shell that elastic shape occurs by chain/belt tension
In the surface of the shell of change or interlayer.
3. a kind of foot-operated force measuring device of electric assisted bicycle according to claim 1, characterized in that strain-type passes
Sensor is set as single or multiple independent strain gauge transducers, or the internal integrated-type strain for having formed semi-bridge type or bridge-type
Formula sensor.
4. a kind of foot-operated force measuring device of electric assisted bicycle according to claim 1, characterized in that in fixing axle
Groove or hollow out notch are set on the shell of surrounding.
5. a kind of foot-operated force measuring device of electric assisted bicycle according to claim 1, characterized in that corresponding along solid
A limiting device is axially arranged in dead axle inside housings and/or on housing cover.
6. a kind of foot-operated force measuring device of electric assisted bicycle according to claim 1, characterized in that work as foot pedal
When by being more than preset maximum pedal force, chain or belt by the first sprocket wheel tend to straightened condition.
7. a kind of foot-operated force measuring device of electric assisted bicycle according to claim 1, characterized in that outside chain wheel
The chain or belt of week engagement are nibbled further around chain wheel is returned with chain wheel periphery around flywheel, the first sprocket wheel being mounted in fixing axle
It closes；
Or,
The second sprocket wheel is also set up on shell, the chain or belt engaged with chain wheel periphery rotates around flywheel, motor driven
Second sprocket wheel, the first sprocket wheel being mounted in fixing axle are engaged further around chain wheel is returned with chain wheel periphery.
8. a kind of foot-operated force measuring device of electric assisted bicycle according to claim 1, characterized in that fixing axle and
Elastic material is at least partly used between shell.
9. a kind of foot-operated force measuring device of electric assisted bicycle according to claim 1, characterized in that will fix
Deformation region and strain gauge transducer are arranged to independent pedal force measurement module around axis, fixing axle, and by the pedal force
Measurement module is fixed on shell.
10. a kind of foot-operated force measuring device of electric assisted bicycle according to claim 1, characterized in that further include
It is respectively assembled at the front shroud and back shroud of shell two sides, the front shroud and back shroud are by the first sprocket wheel, fixing axle and strain
Formula sensor is enclosed in wherein；Be provided on the front shroud or back shroud can accommodate that chain passes through pass through mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820637739.7U CN208616144U (en) | 2018-05-02 | 2018-05-02 | A kind of foot-operated force measuring device of electric assisted bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820637739.7U CN208616144U (en) | 2018-05-02 | 2018-05-02 | A kind of foot-operated force measuring device of electric assisted bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208616144U true CN208616144U (en) | 2019-03-19 |
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ID=65700035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820637739.7U Active CN208616144U (en) | 2018-05-02 | 2018-05-02 | A kind of foot-operated force measuring device of electric assisted bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208616144U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112660292A (en) * | 2020-12-30 | 2021-04-16 | 大川电机科技(江苏)有限公司 | Split torque acquisition device of power-assisted bicycle |
-
2018
- 2018-05-02 CN CN201820637739.7U patent/CN208616144U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112660292A (en) * | 2020-12-30 | 2021-04-16 | 大川电机科技(江苏)有限公司 | Split torque acquisition device of power-assisted bicycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230713 Address after: 414000 Floors 3, 4 and 5, Building 9, Yueyang Modern Equipment Manufacturing Industrial Park, Muligang Community, Muligang, Yueyang Economic and Technological Development Zone, Yueyang City, Hunan Province Patentee after: Yueyang aidaxing Intelligent Technology Co.,Ltd. Address before: Room 313, 3rd Floor, Sunjia Comprehensive Building, Banqiao Street, Yuhuatai District, Nanjing City, Jiangsu Province, 210039 Patentee before: NANJING AOTEBO ELECTROMECHANICAL TECHNOLOGY CO.,LTD. |
|
| TR01 | Transfer of patent right |