CN103085932B - Electric bicycle center shaft force moment sensing device - Google Patents
Electric bicycle center shaft force moment sensing device Download PDFInfo
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- CN103085932B CN103085932B CN201310048472.XA CN201310048472A CN103085932B CN 103085932 B CN103085932 B CN 103085932B CN 201310048472 A CN201310048472 A CN 201310048472A CN 103085932 B CN103085932 B CN 103085932B
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Abstract
The invention discloses an electric bicycle center shaft force moment sensing device which comprises a center shaft arranged in a five-way tube through a bearing, a crank fixed on the center shaft and a crankset sleeved on the center shaft. The electric bicycle center shaft force moment sensing device is characterized by further comprising a force moment sensing Hall component. The component comprises an elastic twist component connected with the center shaft and the crankset. Force moment sensing magnetic steel generating circumferential displacement through twist of the elastic twist component is fixed on the elastic twist component. The electric bicycle center shaft force moment sensing device further comprises a force moment sensing Hall element corresponding to the force moment sensing magnetic steel and fixed on the center shaft. The force moment sensing Hall element is electrically connected with a motor control circuit board through a collecting ring wire outlet device arranged between the center shaft and an inner wall of the five-way tube and the motor control circuit board is electrically connected with a motor. The electric bicycle center shaft force moment sensing device is high in flexibility and accuracy and capable of detecting static torque and dynamic torque, guaranteeing zero start when an electric bicycle is ridden and maintaining stable riding performance.
Description
Technical field
The invention belongs to torque sensor technical field, be specifically related to a kind of electrical bicycle middle shaft moment sensor.
Background technology
Electrical Bicycle, due to its brisk feature such as laborsaving and pollution-free, promotes the use in China just day by day.Traditional Electrical Bicycle all uses hand carrying out speed governing, namely with hand the horsepower output controlling motor, when increasing Electrical Bicycle then mainly adopts torque sensor people to be ridden at present, the power of pedaling of pin converts the output of corresponding voltage signal to, amplify through circuit for controlling motor plate the running power controlling motor after process, greatly can save the energy like this.
Hall revolution speed transducer mostly is at present for the torque sensor in Electrical Bicycle, this sensor uses magnet steel to be pasted onto the turning unit surfaces such as the axis of Electrical Bicycle or flywheel, and on the non-rotatable members such as vehicle frame main shaft, Hall element is installed, when people's tap pedal, axis or flywheel rotate the change current potential producing and correspond to torsional moment, and export corresponding voltage signal, the horsepower output of motor can be controlled after amplifying process.But there is following problems in this kind of Electrical Bicycle sensor: 1, can not detect Static and dynamic moment of torsion, survey precision is poor, can not zero start in riding, there will be electric boosted excessive and make battery produce unnecessary electric discharge in level road and descending are ridden.2, because magnet steel is not arranged on axis actv. force part, its change in displacement produced because of torsion is also not obvious, often obvious when slow speed of revolution, then not obvious during high rotating speed, therefore making the output of induced potential signal inaccurate, working stability and the reliability of sensor decline all greatly.
Summary of the invention
The present invention seeks to: provide a kind of induction sensitivity and accuracy is high, can detect the electrical bicycle middle shaft moment sensor of Static and dynamic moment of torsion, this moment sensor can also guarantee Electrical Bicycle zero start keep the stable of rideability in riding.
Technical scheme of the present invention is: a kind of electrical bicycle middle shaft moment sensor, comprises by the axis of bearing assemble in Five-way tube, the chain wheel that is fixed on the crank on axis and is sheathed on axis; Characterized by further comprising moment induction Hall subassembly, this assembly comprises the elastic torsion component of a connection axis and chain wheel, this elastic torsion component is fixed with the moment sensing magnet steel producing circumferential displacement by it reverses, also comprise and being fixed on axis and the moment sensing Hall element corresponding with moment sensing magnet steel, described moment sensing Hall element is electrically connected with circuit for controlling motor plate through a current colector outgoing line device be installed between axis and Five-way tube inwall, and circuit for controlling motor plate is then electrically connected with motor.
Further, the outgoing line device of current colector described in the present invention comprises collector ring support, current colector, outlet wiring board and conduction brush or power spring; Described axis is fixed with collector ring support, described collector ring support is fixed with some currents colector, and described Five-way tube inwall is fixed with outlet wiring board, described outlet wiring board is fixed with and some conduction brush of described current colector corresponding matching or power spring, described outlet wiring board is electrically connected with circuit for controlling motor plate through pig-tail wire, and circuit for controlling motor plate is then electrically connected with motor.
Further, the Hall element of moment sensing described in the present invention is made up of moment sensing wiring board and the moment sensing Hall body be fixed thereon, described moment sensing wiring board is fixed on collector ring support, and is connected with described current colector one_to_one corresponding by wire.
Further, Five-way tube described in the present invention is built with outlet wiring board positioning adapter, and outlet wiring board positioning adapter described in bowl and axial locking is protected by press-in is left and right in described Five-way tube two ends; Described outlet wiring board positioning adapter one end inwall is provided with interior rank groove, and described outlet wiring board embeds in the groove of described interior rank, and outlet wiring board outer end is then by being placed on the adjustment spring axial restraint on axis.
Further, the component of elastic torsion described in the present invention is preferably by driver plate with to be connected with driver plate one and ring set with opening is formed, described driver plate and ring set are all sheathed on axis, and driver plate and chain wheel are fixed, and described ring set circumferentially has non-closed otch from opening part, the partial fixing that described ring set is thrown off because of non-closed otch with driver plate is on described axis, and the part of remainder then fixes described moment sensing magnet steel.During practical operation, the fixed form of ring set and middle between centers can be fixed by the fastener such as screw, rivet, or fixes by keyway, or also can be welded and fixed, and the present invention is not construed as limiting this.
Further, the magnet steel of moment sensing described in the present invention is positioned at ring set end, and is fixed on the opening side end wall on ring set.
Further, the component of elastic torsion described in the present invention also can adopt conventional spring.
Further, the wiring board of outlet described in the present invention is integrated with velocity response Hall body, axis is then fixed with the velocity response magnet steel corresponding with velocity response Hall body.
The crank related in the present invention is mounted with bicycle pedals with routine techniques is the same when reality uses, and is trampled and driven rotary by people.
Specific works principle of the present invention is: in Electrical Bicycle startup and ride, people steps on pedal drive crank and middle shaft rotation, and torsion is then passed to elastic torsion component by axis.Due to elastic torsion component instantaneous stressed time, wherein fixing with chain wheel driver plate keeps geo-stationary under effect of inertia, also be that the part that ring set is connected with driver plate also keeps geo-stationary, and the part that ring set cuts off because of non-closed otch with driver plate is owing to fixing with axis, therefore produce relative torsion (rotational angle is little, usual about 2 degree).Namely this torsion also makes to produce relative displacement between the moment sensing magnet steel of geo-stationary and the moment sensing Hall element in company with central axis, thus responded to by moment sensing Hall element and obtain magnetic field variation signal, and this signal is converted to voltage signal and export to circuit for controlling motor plate through the effect of current colector and conduction brush or power spring.Described circuit for controlling motor buttress exports corresponding control signal respectively according to the power of voltage signal, and drive motor reduces or improve running power to play good power-assisted effect, greatly saves the energy.
Certainly, velocity response Hall body and velocity response magnet steel is introduced in the further technical scheme of the present invention, their principle of work is the same with routine techniques, with middle shaft rotation, relative velocity induction Hall body produces magnetic field variation signal to velocity response magnet steel, by outlet wiring board, velocity response Hall body is responded to the magnetic field variation signal obtained again and convert speed signal to, and then export to circuit for controlling motor plate, control motor rotation power by after its process.
Namely the effect of the plate of circuit for controlling motor described in the present invention receives moment and the speed sensor signal of the output of outlet wiring board, and export corresponding control signal to motor according to the moment received and speed sensor signal, drive motor changes horsepower output, and its implementation is well known to those skilled in the art.
Advantage of the present invention is:
1. the present invention comes stressed by the elastic torsion component be installed on specially between axis and chain wheel, and produce the moment of torsion displacement of moment sensing magnet steel, compare existing Hall moment sensor, moment transmission puts in place, the defect that when can not there is slow speed of revolution, moment induced signal is faint, but high sensitivity and the high precision of induced signal can be guaranteed all the time.
2. in the present invention, only need the stressed torsion of axis namely to obtain moment induced signal by Hall element, therefore Static and dynamic moment of torsion can be detected, compare existing Hall moment sensor, serviceability is more reliable and more stable, but also can guarantee Electrical Bicycle zero start keep the stable of rideability in riding.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is structure cutaway view of the present invention;
Fig. 2 is moment principle of induction schematic diagram in the present invention.
Wherein: 1, Five-way tube; 2, chain wheel; 3, chain wheel fix screw; 4, crank; 5, bolt; 6, axis; 7, elastic torsion component; 7a, driver plate; 7b, ring set; 7c, opening; 8, dust-proof guard ring; 9, right wrister; 10, deep groove ball bearing; 11, axle jump ring; 12, axis fix screw; 13, outlet wiring board positioning adapter; 14, moment sensing magnet steel; 15, outlet wiring board; 16, collector ring support; 17, current colector; 18, conduction brush; 19, velocity response Hall body; 20, spring is adjusted; 21, left wrister; 22, outlet lining; 23, pig-tail wire; 24, outlet guard ring; A, moment sensing Hall element; 25, moment sensing wiring board; 26, moment sensing Hall body; 27, roll left needle bearing; 28, velocity response magnet steel; 29, right needle bearing; 30, seal ring; 31, otch.
Detailed description of the invention
Embodiment: shown in composition graphs 1 ~ Fig. 2, for the detailed description of the invention of this electrical bicycle middle shaft moment sensor provided by the invention, it is specifically by Five-way tube 1, chain wheel 2, chain wheel fix screw 3, crank 4, bolt 5, axis 6, elastic torsion component 7, dust-proof guard ring 8, right wrister 9, deep groove ball bearing 10, axle jump ring 11, axis fix screw 12, outlet wiring board positioning adapter 13, moment sensing magnet steel 14, outlet wiring board 15, collector ring support 16, current colector 17, conduction brush 18, velocity response Hall body 19, adjustment spring 20, left wrister 21, outlet lining 22, pig-tail wire 23, outlet guard ring 24, moment sensing Hall element A, roll left needle bearing 27, velocity response magnet steel 28, right needle bearing 29 and these parts of seal ring 30 formed.
The same with routine techniques, wear axis 6 in described Five-way tube 1, the two ends of axis 6 are all fixed with crank 4 by bolt 5, simultaneously sheathed chain wheel 2 on described axis 6, and this chain wheel 2 is positioned on the right side of Five-way tube 1.Key improvements of the present invention is moment induction Hall subassembly, and the core of this grip assembly is the elastic torsion component 7 of a connection axis 6 and chain wheel 2, this elastic torsion component 7 is fixed with the moment sensing magnet steel 14 producing circumferential displacement by it reverses.Shown in concrete composition graphs 1 and Fig. 2, elastic torsion component 7 in the present embodiment is by driver plate 7a and be connected with driver plate 7a one and ring set 7b with opening 7c is formed, described driver plate 7a and ring set 7b is all sheathed on axis 6, and chain wheel 2 is fixed on driver plate 7a by some chain wheel fix screws 3.And described ring set 7b circumferentially has non-closed otch 31 from opening 7c, the part that described ring set 7b throws off because of non-closed otch 31 with driver plate 7a is fixed on described axis 6 by two pieces of axis fix screws 12, and the part of remainder then fixes described moment sensing magnet steel 14.Moment sensing magnet steel 14 in the present embodiment is specifically positioned at ring set 7b end, and is fixed on the opening 7c side end wall on ring set 7b, sees Fig. 2.And again shown in composition graphs 1, the ring set 7b in the present embodiment and be provided with right needle bearing 29 between axis 6, and seal by the seal ring 30 be sheathed on axis 6 outside right needle bearing 29.
Described moment induction Hall subassembly also has and is fixed on moment sensing Hall element A on axis 6 and corresponding with moment sensing magnet steel 14, described moment sensing Hall element A is electrically connected with circuit for controlling motor plate (not shown in FIG.) through a current colector outgoing line device be installed between axis 6 and Five-way tube 1 inwall, and circuit for controlling motor plate is then electrically connected with motor (not shown in FIG.).
Shown in composition graphs 1, the current colector outgoing line device described in the present embodiment is made up of collector ring support 16, current colector 17, outlet wiring board 15, conduction brush 18 and pig-tail wire 23.Described axis 6 is fixed with collector ring support 16, described collector ring support 16 is fixed with three currents colector 17, and described Five-way tube 1 is built with outlet wiring board positioning adapter 13, outlet wiring board positioning adapter 13 described in bowl 21,9 and axial locking is protected by press-in is left and right in described Five-way tube 1 two ends; Described outlet wiring board positioning adapter 13 one end inwall is provided with interior rank groove, and described outlet wiring board 15 embeds in the groove of described interior rank, and on the left of outlet wiring board 15, outer end is then by being placed on adjustment spring 20 axial restraint on axis 6.Described outlet wiring board 15 is fixed with three conduction brush 18 with described current colector 17 corresponding matching, described outlet wiring board 15 is electrically connected with circuit for controlling motor plate (not shown in FIG.) through pig-tail wire 23, and circuit for controlling motor plate is then electrically connected with motor (not shown in FIG.).The Hall element of moment sensing described in the present embodiment A is made up of moment sensing wiring board 25 and the moment sensing Hall body 26 be fixed thereon, described moment sensing wiring board 25 is fixed on collector ring support 16, and is connected with described current colector 17 one_to_one corresponding by three wires (not marking in figure).
Still shown in composition graphs 1, be provided with deep groove ball bearing 10 between the right wrister 9 in the present embodiment and ring set 7b, and the two ends, left and right of deep groove ball bearing 10 are locked respectively by the axle jump ring 11 be placed on ring set 7b and dust-proof guard ring 8.Outwards be provided with outlet lining 22 and outlet guard ring 24 successively in adjustment spring 20 in left wrister 21 simultaneously in the present embodiment, the pig-tail wire 23 on described outlet wiring board 15 is drawn through the perforate on outlet lining 22 and outlet guard ring 24 successively.And be provided with the needle bearing 27 that rolls left between described outlet lining 22 and axis 6.
The wiring board of outlet described in the present embodiment 15 is integrated with velocity response Hall body 19, axis 6 is then fixed with the velocity response magnet steel 28 corresponding with velocity response Hall body 19.
The crank 4 related in the present embodiment is mounted with bicycle pedals with routine techniques is the same when reality uses, and is trampled and driven rotary by people.
Shown in composition graphs 1 ~ Fig. 2, specific works principle of the present invention is: in Electrical Bicycle startup and ride, people steps on pedal drive crank 4 and axis 6 rotates, and torsion is passed to elastic torsion component 7 by axis 6.Due to elastic torsion component 7 instantaneous stressed time, wherein fixing with chain wheel 2 driver plate 7a keeps geo-stationary under effect of inertia, also be that the part that ring set 7b is connected with driver plate 7a also keeps geo-stationary, and the part that ring set 7b cuts off because of non-closed otch with driver plate 7a is owing to fixing with axis 6, therefore produce relative torsion (rotational angle is little, usual about 2 degree).Namely this torsion also makes to produce relative displacement between the moment sensing magnet steel 14 of geo-stationary and the moment sensing Hall element A in company with axis 6 rotation, thus responded to by moment sensing Hall element A and obtain magnetic field variation signal, and this signal is converted to voltage signal and export to circuit for controlling motor plate through the effect of current colector 17 and conduction brush 18.Described circuit for controlling motor buttress exports corresponding control signal respectively according to the power of voltage signal, and drive motor reduces or improve running power to play good power-assisted effect, greatly saves the energy.
Certainly, velocity response Hall body 19 and velocity response magnet steel 28 is introduced in the present embodiment, their principle of work is the same with routine techniques, velocity response magnet steel 28 rotates with axis 6 and relative velocity induction Hall body 19 produces magnetic field variation signal, by outlet wiring board 15, velocity response Hall body 19 is responded to the magnetic field variation signal obtained again and convert speed signal to, and then export to circuit for controlling motor plate, control motor rotation power by after its process.
Certain above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalent transformations of doing according to the Spirit Essence of main technical schemes of the present invention or modification, all should be encompassed within protection scope of the present invention.
Claims (7)
1. an electrical bicycle middle shaft moment sensor, comprises by the axis (6) of bearing assemble in Five-way tube (1), the chain wheel (2) that is fixed on the crank (4) on axis (6) and is sheathed on axis (6), characterized by further comprising moment induction Hall subassembly, this assembly comprises the elastic torsion component (7) of a connection axis (6) and chain wheel (2), this elastic torsion component (7) is fixed with the moment sensing magnet steel (14) producing circumferential displacement by it reverses, also comprise and be fixed on upper and corresponding with moment sensing magnet steel (14) the moment sensing Hall element (A) of axis (6), described moment sensing Hall element (A) is electrically connected with circuit for controlling motor plate through a current colector outgoing line device be installed between axis (6) and Five-way tube (1) inwall, circuit for controlling motor plate is then electrically connected with motor, described elastic torsion component (7) is by driver plate (7a) and be connected with driver plate (7a) one and ring set (7b) with opening (7c) is formed, described driver plate (7a) and ring set (7b) are all sheathed on axis (6), and driver plate (7a) is fixed with chain wheel (2), and described ring set (7b) circumferentially has non-closed otch (31) from opening (7c), the partial fixing that described ring set (7b) is gone up and driver plate (7a) is thrown off because of non-closed otch (31) is on described axis (6), the part of remainder then fixes described moment sensing magnet steel (14).
2. electrical bicycle middle shaft moment sensor according to claim 1, is characterized in that described current colector outgoing line device comprises collector ring support (16), current colector (17), outlet wiring board (15) and conduction brush (18) or power spring; Described axis (6) is fixed with collector ring support (16), described collector ring support (16) is fixed with some currents colector (17), and described Five-way tube (1) inwall is fixed with outlet wiring board (15), described outlet wiring board (15) is fixed with and some conduction brush (18) of described current colector (17) corresponding matching or power spring, described outlet wiring board (15) is electrically connected with circuit for controlling motor plate through pig-tail wire (23), and circuit for controlling motor plate is then electrically connected with motor.
3. electrical bicycle middle shaft moment sensor according to claim 2, it is characterized in that described moment sensing Hall element (A) is made up of moment sensing wiring board (25) and the moment sensing Hall body (26) that is fixed thereon, described moment sensing wiring board (25) is fixed on collector ring support (16), and is connected with described current colector (17) one_to_one corresponding by wire.
4. electrical bicycle middle shaft moment sensor according to claim 2, it is characterized in that described Five-way tube (1) is built with outlet wiring board positioning adapter (13), outlet wiring board positioning adapter (13) described in bowl (21,9) and axial locking is protected by press-in is left and right in described Five-way tube (1) two ends; Described outlet wiring board positioning adapter (13) one end inwall is provided with interior rank groove, described outlet wiring board (15) embeds in the groove of described interior rank, and outlet wiring board (15) outer end is then by being placed on adjustment spring (20) axial restraint on axis (6).
5. electrical bicycle middle shaft moment sensor according to claim 1, it is characterized in that described moment sensing magnet steel (14) is positioned at ring set (7b) end, and be fixed on opening (7c) the side end wall on ring set (7b).
6. the electrical bicycle middle shaft moment sensor according to claim 1 or 2 or 3 or 4, is characterized in that described elastic torsion component (7) is spring.
7. electrical bicycle middle shaft moment sensor according to claim 2, it is characterized in that described outlet wiring board (15) is integrated with velocity response Hall body (19), axis (6) is then fixed with the velocity response magnet steel (28) corresponding with velocity response Hall body (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310048472.XA CN103085932B (en) | 2013-02-07 | 2013-02-07 | Electric bicycle center shaft force moment sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310048472.XA CN103085932B (en) | 2013-02-07 | 2013-02-07 | Electric bicycle center shaft force moment sensing device |
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| Publication Number | Publication Date |
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| CN103085932A CN103085932A (en) | 2013-05-08 |
| CN103085932B true CN103085932B (en) | 2015-01-28 |
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| CN201310048472.XA Active CN103085932B (en) | 2013-02-07 | 2013-02-07 | Electric bicycle center shaft force moment sensing device |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103879506B (en) * | 2014-02-11 | 2016-01-20 | 苏州工业园区同盛车业有限公司 | Electrical bicycle middle shaft moment sensor |
| CN103879505B (en) * | 2014-02-11 | 2016-04-20 | 苏州工业园区同盛车业有限公司 | Electric bicycle motor |
| CN104443231B (en) * | 2014-10-25 | 2017-03-08 | 昆山攀登变频电子科技有限公司 | Electric bicycle axle bearing bowl and its electromobile frame assembly |
| CN104369832A (en) * | 2014-10-31 | 2015-02-25 | 太仓市荣驰电机有限公司 | Conductive sliding ring used for electric bicycle and assisting power control method for electric bicycle provided with conductive sliding ring |
| CN105346664B (en) * | 2015-11-16 | 2018-03-06 | 锐嘉科集团有限公司 | Electric bicycle and its control method |
| CN107806949A (en) * | 2017-12-08 | 2018-03-16 | 广州市快易达工贸有限公司 | A kind of dynamic pickup structure |
| CN109572914A (en) * | 2018-12-26 | 2019-04-05 | 重庆理工大学 | A kind of cantilever axis electric bicycle moment sensor |
| CN109591945A (en) * | 2019-01-15 | 2019-04-09 | 浙江鑫驱科技有限公司 | A kind of power-aid bicycle torque testing agency facilitating installation |
| CN113135253A (en) * | 2020-01-20 | 2021-07-20 | 八方电气(苏州)股份有限公司 | Electric bicycle speed torque sensor system and electric bicycle |
| FR3112524B1 (en) * | 2020-07-20 | 2024-02-23 | Moving Magnet Tech | CYCLE DRIVE COMPONENT HAVING A TORQUE SENSOR |
-
2013
- 2013-02-07 CN CN201310048472.XA patent/CN103085932B/en active Active
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Address after: Suzhou Industrial Park Loufeng town in Jiangsu province and 215122 Road No. 9 Patentee after: Eight party electrical (Suzhou) Limited by Share Ltd Address before: Suzhou City Industrial Park Loufeng town and the road of 215122 Jiangsu province No. 9 Patentee before: Suzhou Bafang Motor Technology Co., Ltd. |
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