CN202175159U - Torque sensing mechanism of electric bicycle - Google Patents
Torque sensing mechanism of electric bicycle Download PDFInfo
- Publication number
- CN202175159U CN202175159U CN2011202230601U CN201120223060U CN202175159U CN 202175159 U CN202175159 U CN 202175159U CN 2011202230601 U CN2011202230601 U CN 2011202230601U CN 201120223060 U CN201120223060 U CN 201120223060U CN 202175159 U CN202175159 U CN 202175159U
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- Prior art keywords
- sleeve
- strain
- strain sensor
- crank shaft
- electrical bicycle
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Abstract
The utility model discloses a torque sensing mechanism of an electric bicycle, which mainly characterized in that a sleeve is sleeved on a crankshaft so as to rotate along with the crankshaft, a crankset race-face is fixed to one end of the sleeve, a strain gauge is attached to the surface of the sleeve and used for measuring strain capacity generated by the sleeve under the action of torque force, the measured strain capacity is converted into a strain signal, and a strain sensor additionally arranged on the crankshaft is electrically connected with the strain gauge and used for transmitting the strain signal generated by the strain gauge out. Thereby, pedal force borne by both the left end and the right end of the crankshaft can be transmitted to the sleeve directly, and then the strain gauge sleeved on the surface of the sleeve can definitely measure the strain capacity generated by the sleeve and generates one correct strain signal, so that bilateral sensing can be achieved.
Description
Technical field
The utility model relates to Electrical Bicycle, particularly about a kind of moment sense mechanism of Electrical Bicycle.
Background technology
See also Fig. 1; Moment sense mechanism 10 commonly used for Electrical Bicycle; It mainly attaches a strain sensor 12 on the surface of crank shaft 11, when crank shaft 11 receives the stampede power effect and produces torsion when distortion, strain sensor 12 just can produce a strain signal through the dependent variable of sensing crank shaft 11; Controller can be controlled the motor outputting power according to this strain signal, lets the rider obtain the effect that drives of the most comfortable.
Yet in this existing structure; Left side crank 13 is done the time spent and can strength directly be passed to crank shaft 11 receiving stampede power; But right crank 14 is done the time spent most strength is but arranged is to be passed to fluted disc 15 receiving stampede power; That is to say that the monolateral sensing that this existing structure only can the march arbor makes that the right-hand member of crank shaft 11 suffered torque magnitude and 14 strength that should be passed to crank shaft 11 of right crank are different; The accuracy that so will cause can producing a little error between 12 dependent variables that measure of strain sensor and the actual state and reduce measurement, and then with the related auxiliary power size that influences the desire output of motor institute.
The utility model content
The main purpose of the utility model is to provide a kind of moment sense mechanism of Electrical Bicycle, and it can carry out the sensing of bilateral legpower to crank shaft, measures the dependent variable of crank shaft and improves the accuracy of sensing with certain.
A time purpose of the utility model is to provide a kind of moment sense mechanism of Electrical Bicycle, and it has waterproof effect.
For reaching above-mentioned purpose, the moment sense mechanism of the utility model includes a crank shaft, a sleeve, a fluted disc, a strain sensor, and a strain sensor, and wherein: the two ends of this crank shaft supply crank assembling respectively; This jacket casing is located at this crank shaft and can be along with this crankshaft rotation; This fluted disc is fixed in an end of this sleeve, uses for a chain and installs; This strain sensor is attached at this sleeve, in order to measuring the dependent variable that this sleeve is produced when receiving twisting force, and converts this dependent variable to a strain signal; This strain sensor is sheathed on this crank shaft and electrically connects with this strain sensor, in order to the strain signal that this strain sensor produced is sent out.
The moment sense mechanism of a kind of Electrical Bicycle of the utility model includes:
One crank shaft;
One sleeve is sheathed on this crank shaft, makes that this sleeve can be along with this crankshaft rotation;
One fluted disc is fixed in an end of this sleeve;
One strain sensor is attached at the surface of this sleeve, in order to measuring the dependent variable that this sleeve is produced when receiving twisting force, and converts this dependent variable to a strain signal; And
One strain sensor is located at this crank shaft and is electrically connected with this strain sensor, in order to the strain signal that this strain sensor produced is sent out.
The moment sense mechanism of described Electrical Bicycle; Wherein, also include a magnification circuit plate, be located at this sleeve and electrically connect this strain sensor and this strain sensor; In order to amplifying the strain signal that this strain sensor produces, and the strain signal after will amplifying is sent to this strain sensor.
The moment sense mechanism of described Electrical Bicycle, wherein, this strain sensor is magslip or conducting slip ring.
The moment sense mechanism of described Electrical Bicycle, wherein, this jacket casing is provided with a bearing, is provided with a water proof ring between this bearing and this sleeve, and is provided with a water proof ring between this sleeve and this crank shaft.
The moment sense mechanism of described Electrical Bicycle, wherein, this crank shaft has a spline joint portion and supplies this sleeve to be embedded, and radially is arranged in this sleeve and this spline joint portion with at least one set pin.
The moment sense mechanism of described Electrical Bicycle, wherein, this fluted disc is screwed together in an end of this sleeve.
The beneficial effect of the utility model is; The moment sense mechanism of the Electrical Bicycle that is provided; The suffered legpower of the right ends of this crank shaft is passed to this fluted disc after can being directly delivered to sleeve again; The strain sensor of being located at this sleeve surface can when this crank shaft receives two-way legpower, the dependent variable to this sleeve be measured, reach to produce correct strain signal and improve the purpose that measures accuracy.Further, this sleeve is provided with a magnification circuit plate, and magnification circuit plate electrically connects this strain sensor and this strain sensor, and in order to amplifying the strain signal that this strain sensor produces, and the strain signal after will amplifying is sent to this strain sensor; In addition, be provided with a bearing between this sleeve and this fluted disc, be provided with a water proof ring between this bearing and this sleeve, and be provided with a water proof ring between this sleeve and this crank shaft, make the design of the utility model have waterproof effect.
Description of drawings
Fig. 1 is the cutaway view of moment sense mechanism commonly used;
Fig. 2 is the cutaway view of the utility model one preferred embodiment;
Fig. 3 is the part sectional view of the utility model one preferred embodiment, mainly shows the spline joint portion of crank shaft and the bonding state between the sleeve.
[main element nomenclature]
Moment sense mechanism 20 five-way pipes 22
Crank 24 crank shafts 30
Spline joint portion 32 sleeves 40
Set pin 42 water proof rings 44
Self lubricating bearing 46 fluted discs 50
The specific embodiment
Now cooperate the graphic following preferred embodiment of enumerating, be elaborated in order to structure and effect to the utility model.
Please consult Fig. 2 earlier, the moment sense mechanism 20 for the utility model one preferred embodiment mainly is applicable to Electrical Bicycle, includes a crank shaft 30, a sleeve 40, a fluted disc 50, a strain sensor 60, a magnification circuit plate 70, and a strain sensor 80.
Fluted disc 50 is located at the right-hand member of sleeve 40 with the mode that screws togather, and uses for chain and assembles.
Can know via said structure, when about two cranks 24 receive the stampede power effect and when driving crank shaft 30 and rotating, about the torsion that produced of two cranks 24 can itself directly be passed to sleeve 40 via crank shaft 30 from the right ends of crank shaft 30; Then be passed to fluted disc 50 by sleeve 40 again; With the start of drive chain, and in the process of the two-way strength transmission in the left and right sides, the utility model utilizes the design of sleeve 40; Can let the strain sensor 60 of being located at sleeve 40 surface when crank shaft 30 receives two-way legpower, sleeve 40 carried out the sensing of dependent variable; Producing correct strain signal, with common structure by contrast, the design of the utility model has higher measurement accuracy; Thus, controller can be controlled motor according to this strain signal and export optimal auxiliary power size.
The utility model is merely casehistory in the composed component of preceding taking off among the embodiment to be disclosed, and is not the scope that is used for limiting this case, the substituting or change of other equivalence element, and the claim that also should be this case contains.
Claims (6)
1. the moment sense mechanism of an Electrical Bicycle is characterized in that including:
One crank shaft;
One sleeve is sheathed on this crank shaft, makes that this sleeve can be along with this crankshaft rotation;
One fluted disc is fixed in an end of this sleeve;
One strain sensor is attached at the surface of this sleeve; And
One strain sensor is located at this crank shaft and is electrically connected with this strain sensor.
2. the moment sense mechanism of Electrical Bicycle as claimed in claim 1 is characterized in that, also includes a magnification circuit plate, is located at this sleeve and electrically connects this strain sensor and this strain sensor.
3. the moment sense mechanism of Electrical Bicycle as claimed in claim 2 is characterized in that, this strain sensor is magslip or conducting slip ring.
4. the moment sense mechanism of Electrical Bicycle as claimed in claim 1 is characterized in that, this jacket casing is provided with a bearing, is provided with a water proof ring between this bearing and this sleeve, and is provided with a water proof ring between this sleeve and this crank shaft.
5. the moment sense mechanism of Electrical Bicycle as claimed in claim 1 is characterized in that, this crank shaft has a spline joint portion and supplies this sleeve to be embedded, and radially is arranged in this sleeve and this spline joint portion with at least one set pin.
6. the moment sense mechanism of Electrical Bicycle as claimed in claim 1 is characterized in that, this fluted disc is screwed together in an end of this sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202230601U CN202175159U (en) | 2011-06-29 | 2011-06-29 | Torque sensing mechanism of electric bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202230601U CN202175159U (en) | 2011-06-29 | 2011-06-29 | Torque sensing mechanism of electric bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202175159U true CN202175159U (en) | 2012-03-28 |
Family
ID=45865058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202230601U Expired - Fee Related CN202175159U (en) | 2011-06-29 | 2011-06-29 | Torque sensing mechanism of electric bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202175159U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103257011A (en) * | 2013-05-03 | 2013-08-21 | 尚林山 | Crank torque measurement device, electric bicycle and intelligent bicycle |
| CN103487185A (en) * | 2013-09-04 | 2014-01-01 | 卢泽仲 | Measuring device for power of bicycle |
| CN103879506A (en) * | 2014-02-11 | 2014-06-25 | 苏州工业园区同盛车业有限公司 | Center shaft torque sensing device of electric bicycle |
| TWI475203B (en) * | 2013-06-13 | 2015-03-01 | ||
| CN104709430A (en) * | 2014-10-31 | 2015-06-17 | 太仓市悦博电动科技有限公司 | Treading force output device which is used for middle shaft torque sensing system of electric bike and is in two-stage spline connection |
| EP2894088A1 (en) * | 2014-01-10 | 2015-07-15 | Samsung Electro-Mechanics Co., Ltd. | Insulator and torque sensing device having the same |
| WO2018040337A1 (en) * | 2016-08-31 | 2018-03-08 | 太仓市悦博电动科技有限公司 | Bilateral power meter used in bicycle or auxiliary power bicycle |
| CN108030603A (en) * | 2018-01-26 | 2018-05-15 | 北京理工大学 | Rehabilitation wheelchair |
| EP3213987A4 (en) * | 2014-10-31 | 2018-05-30 | Taicang Rongchi Motor Co., Ltd. | Electric vehicle central shaft torque sensing system |
| CN108313190A (en) * | 2018-03-14 | 2018-07-24 | 扬顶（天津）科技有限公司 | A kind of electric assisted bicycle chain drum torque sensor |
-
2011
- 2011-06-29 CN CN2011202230601U patent/CN202175159U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103257011A (en) * | 2013-05-03 | 2013-08-21 | 尚林山 | Crank torque measurement device, electric bicycle and intelligent bicycle |
| TWI475203B (en) * | 2013-06-13 | 2015-03-01 | ||
| CN103487185A (en) * | 2013-09-04 | 2014-01-01 | 卢泽仲 | Measuring device for power of bicycle |
| EP2894088A1 (en) * | 2014-01-10 | 2015-07-15 | Samsung Electro-Mechanics Co., Ltd. | Insulator and torque sensing device having the same |
| CN103879506A (en) * | 2014-02-11 | 2014-06-25 | 苏州工业园区同盛车业有限公司 | Center shaft torque sensing device of electric bicycle |
| CN104709430A (en) * | 2014-10-31 | 2015-06-17 | 太仓市悦博电动科技有限公司 | Treading force output device which is used for middle shaft torque sensing system of electric bike and is in two-stage spline connection |
| EP3213987A4 (en) * | 2014-10-31 | 2018-05-30 | Taicang Rongchi Motor Co., Ltd. | Electric vehicle central shaft torque sensing system |
| EP3213986A4 (en) * | 2014-10-31 | 2018-07-25 | Taicang Yuebo Electric Technology Co., Ltd. | Central shaft torque sensing system for electric bicycle having centre-mounted motor |
| WO2018040337A1 (en) * | 2016-08-31 | 2018-03-08 | 太仓市悦博电动科技有限公司 | Bilateral power meter used in bicycle or auxiliary power bicycle |
| CN108030603A (en) * | 2018-01-26 | 2018-05-15 | 北京理工大学 | Rehabilitation wheelchair |
| CN108313190A (en) * | 2018-03-14 | 2018-07-24 | 扬顶（天津）科技有限公司 | A kind of electric assisted bicycle chain drum torque sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20120328 Termination date: 20180629 |