CN103085931A - Electric bicycle central shaft torsion force sensing device - Google Patents
Electric bicycle central shaft torsion force sensing device Download PDFInfo
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- CN103085931A CN103085931A CN2013100407780A CN201310040778A CN103085931A CN 103085931 A CN103085931 A CN 103085931A CN 2013100407780 A CN2013100407780 A CN 2013100407780A CN 201310040778 A CN201310040778 A CN 201310040778A CN 103085931 A CN103085931 A CN 103085931A
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Abstract
The invention discloses a torsion force sensing device for a central shaft of an electric bicycle. The torsion force sensing device for the central shaft of the electric bicycle comprises a five-way tube and a central shaft rotatably assembled in the five-way tube and is characterized in that a magnet ring is arranged on the central shaft in a fixed or an integrated mode, a plurality of magnetic poles are arranged on the top edge circumference of the magnet ring at equal intervals, S and N poles of the plurality of magnetic poles are configurated alternatively, the central shaft is provided with an elastic twisting body which is driven by the central shaft to rotate, a separation ring is arranged on the elastic twisting body in a fixed or an integrated mode, the separation ring is sleeved on the magnet ring, and a plurality of windows which are used for magnetizing are arranged on the top edge circumference of the elastic ring at equal intervals. The twisting force sensing device for the central shaft of the electric bicycle further comprises a coil which is fixed in the five-way tube, located on the outer periphery of the separation ring and is used for sensing changes of magnetic flux, an outgoing wire of the coil is connected with a motor control circuit board of the electric bicycle in an electric mode, and the motor control circuit board is connected with a motor in an electric mode. By means of the torsion force sensing device for the central shaft of the electric bicycle, the sensitivity and accuracy of signal perception are high, static and dynamic torsion moment can be detected, the working performance is stable and reliable, and the fact that the electric bicycle is zero started in the riding process and the riding performance is stable are guaranteed.
Description
Technical field
The present invention relates to a kind of electrical bicycle middle shaft torque sensor.
Background technology
Electrical Bicycle promotes the use in China just day by day due to its brisk characteristics such as laborsaving and pollution-free.Traditional Electrical Bicycle all comes speed governing with handgrip, namely control the horsepower output of motor with handgrip, when at present increasing Electrical Bicycle mainly adopts torsion torque sensor that the people is ridden, the power of pedaling of pin converts corresponding voltage signal output to, control the running power of motor after the circuit for controlling motor plate amplifies processing, can greatly save the energy like this.
The torsion torque sensor that is used at present Electrical Bicycle mostly is Hall revolution speed transducer, this sensor uses magnet steel to stick on the turning unit such as the axis of Electrical Bicycle or flywheel surface, and on the non-rotatable members such as vehicle frame main shaft, Hall element is installed, when people's tap pedal, axis or flywheel rotation produce the variation current potential corresponding to torsional moment, and export corresponding voltage signal, can control the horsepower output of motor after amplifying processing.There is following problems in this class Electrical Bicycle sensor: 1, can not detect the Static and dynamic moment of torsion, survey precision is poor, can not zero start in riding, level road and descending ride middle can occur electric boosted excessive and make battery produce unnecessary discharge.2, this class turning unit of axis and flywheel easy to wear or inclination in the long-term use procedure of Electrical Bicycle, cause magnet steel on it and the position between Hall element to change, make the output of induced potential signal no longer accurate, the working stability of sensor and reliability all descend greatly.
Summary of the invention
The present invention seeks to: provide a kind of and can detect Static and dynamic moment of torsion and the more reliable and more stable electrical bicycle middle shaft torque sensor of serviceability, this sensing device can also guarantee that Electrical Bicycle riding middle zero start and keep the stable of rideability.
Technical scheme of the present invention is: a kind of electrical bicycle middle shaft torque sensor comprises that Five-way tube and rotation are assemblied in the axis in Five-way tube; It is characterized in that fixing on described axis or be integrally formed with magnet ring, being interval with some magnetic poles of alternately arranging with S, the N utmost point along even circumferential on described magnet ring; Described axis is provided with the elastic torsion body by its driven rotary, and is fixing or be integrally formed with shading ring on described elastic torsion body, and described barrier cuff is offered some windows for magnetic conduction along the even circumferential interval on it on magnet ring; Also comprise being fixed in Five-way tube and being positioned at the peripheral coil that is used for the induction flux change of shading ring, the pig-tail wire of described coil is electrically connected to the circuit for controlling motor plate of Electrical Bicycle, and the circuit for controlling motor plate is electrically connected to motor.
Further, some magnet steel that magnet ring described in the present invention is located at the steady ring on axis by fixing or one and the order even interval that replaces with S, the N utmost point along circumference is fixed on steady ring consist of.
Further, steady ring described in the present invention surface is interval with some magnet steel positioning grooves along even circumferential, and described magnet steel fixes in described magnet steel positioning groove.
Further, Five-way tube described in the present invention is in-built the coil location pipe, described Five-way tube two ends are by being pressed into the described coil location pipe of tightening cover axial restraint, on the inwall of described coil location Guan Yiduan, corresponding magnet ring is provided with interior rank circular groove, described coil embeds in the circular groove of described interior rank from coil location Guan Yiduan, and the coil outer end is by being placed on the jump ring axial restraint on the elastic torsion body.
Further, on Five-way tube described in the present invention and coil location pipe, correspondence has through hole, and described through hole passes with the circuit for controlling motor plate of Electrical Bicycle for the described pig-tail wire of coil and is electrically connected to.
Further, the present invention also comprises chain drum, described elastic torsion body one end is wholely set the chain drum connector with spline, described chain drum connector is placed on axis, described chain drum be provided with the chain drum connector on the splined hole of spline fitted, described chain drum connector stretches out tightening cover and the chain drum assembling of Five-way tube one end.
Further, one end of axis described in the present invention is arranged with and the fixing chain drum gland with the described chain drum of axial locking of chain drum connector.
Further, be provided with bearing between the connector of chain drum described in the present invention and axis, and described two tightening covers also are provided with bearing respectively and between described axis and described chain drum connector.
Further, be integrally formed with spline housing on the body of elastic torsion described in the present invention, fix with the spline fitted that axis is provided with.
Preferential existing toughness and the good thin-wall steel tube of twisting property of adopting of elastic torsion body in the present invention made, spring steel pipe for example, and be further to strengthen the twisting property of this class steel pipe, also can be along helix line even interval punching on steel pipe walls, or mill out at least one of inside and outside plug helix, or cut out helical cuts.Certainly, the elastic torsion body in the present invention also can adopt conventional spring.
The axis that relates in the present invention is mounted with bicycle pedals with routine techniques is the same when reality is used, and is trampled and driven rotary by the people.
Specific works principle of the present invention is: in Electrical Bicycle startup and the process of riding, the people steps on the pedal drive middle shaft rotation, due to instantaneous when stressed at axis, it is relatively static that the elastic torsion body keeps under effect of inertia, so just make between axis and elastic torsion body and produce relative torsion, also namely make between magnet ring and shading ring produce relative rotation (rotational angle is little, about common 2 degree).And the variation that on the magnetic pole on magnet ring and shading ring, the changing of the relative positions between corresponding window has brought magnetic flux produces flux change amount δ, then by the described flux change amount of coil-induced acquisition δ, and to the voltage signal of converting and export to the circuit for controlling motor plate.Described circuit for controlling motor buttress is exported respectively corresponding control signal 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.
The effect of the plate of circuit for controlling motor described in the present invention is the voltage signal of receiving coil output, and exports corresponding control signal to motor according to voltage signal, and drive motor changes horsepower output, and its implementation is well known to those skilled in the art.
Advantage of the present invention is:
1. when the present invention tramples the people by magnet ring with relatively rotating between the shading ring of window, the suffered torque magnitude of axis is converted to flux change amount δ, namely realize conversion between axis torsion and flux change amount δ by the circumference framework, compare existing Hall torsion torque sensor, be not subjected to the restriction of sensing element installation site, the faint defective of induced signal in the time of also can not having slow speed of revolution, but can guarantee all the time high sensitivity and the high precision of induced signal.
2. only need relatively rotate between axis of the present invention and elastic torsion body, can respond to torsion signal, therefore can detect the Static and dynamic moment of torsion, compare existing Hall torsion torque sensor, serviceability is more reliable and more stable, but also can guarantee that Electrical Bicycle riding middle zero start and keep the stable of rideability.
3. the present invention is simple in structure, convenient for production, low cost of manufacture.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples:
Fig. 1 is structural representation of the present invention;
Fig. 2 is that the A-A of Fig. 1 is to cutaway view.
Wherein: 1, Five-way tube; 2, axis; 2a, spline; 3, elastic torsion body; 3a, spline housing; 4, shading ring; 4a, window; 5, coil; 5a, pig-tail wire; A, magnet ring, 6, steady ring; 7, magnet steel; 8, coil location pipe; 8a, interior rank circular groove; 9, jump ring; 10, chain drum; 11, chain drum connector; 12, chain drum gland; 13, left tightening cover; 14, right tightening cover; 15, bearing.
The specific embodiment
Embodiment: be a kind of specific embodiment of electrical bicycle middle shaft torque sensor of the present invention in conjunction with illustrated in figures 1 and 2, it together is comprised of Five-way tube 1, axis 2, elastic torsion body 3, shading ring 4, coil 5, magnet ring A, coil location pipe 8, jump ring 9, chain drum 10, chain drum connector 11, chain drum gland 12, left tightening cover 13, right tightening cover 14 and three bearings 15.
Axis described in the present embodiment 2 is placed in Five-way tube 1, and axis 2 is provided with elastic torsion body 3, and described elastic torsion body 3 adopts existing spring steel pipe to make, and is cut with helical cuts on the tube wall of spring steel pipe, to strengthen its twisting property.The left end of the elastic torsion body 3 in the present embodiment is integrally formed with spline housing 3a, and the spline 2a that is provided with axis 2 is fixed, thereby makes elastic torsion body 3 to rotate together in company with axis 2.
The A of magnet ring described in the present embodiment is upper is interval with 12 magnetic poles of alternately arranging with S, the N utmost point along even circumferential.Specifically in conjunction with shown in Figure 2,12 magnet steel 7 that described magnet ring A specifically is located at the steady ring 6 on axis 2 by one and the order even interval that replaces with S, the N utmost point along circumference is fixed on steady ring 6 consist of jointly.And 12 magnet steel positioning grooves are offered along the even circumferential interval in 6 surfaces of steady ring described in the present embodiment, thereby corresponding the fixing in corresponding magnet steel positioning groove of described magnet steel 7 forms magnetic pole.
Be integrally formed with shading ring 4 on the body of elastic torsion described in the present embodiment 3, described shading ring 4 is placed on magnet ring A, offers 4 window 4a that are used for magnetic conduction on it along the even circumferential interval, specifically as shown in Figure 2.At initial condition, be also that under the not stressed static condition of axis, the gap of adjacent two magnet steel 7 is over against window 4a.
Five-way tube described in the present embodiment 1 is in-built coil location pipe 8, described Five-way tube 1 two ends are by being pressed into left and right tightening cover 13, the 14 described coil location pipes 8 of axial restraint, on the inwall of described coil location pipe 8 one ends, corresponding magnet ring A is provided with interior rank circular groove 8a, described coil 5 embeds in described interior rank circular groove 8a from coil location pipe 8 one ends, and coil 5 outer ends are by being placed on jump ring 9 axial restraints on elastic torsion body 3.Described coil 5 is positioned at the peripheral induction flux change that is used for of shading ring 4.On described Five-way tube 1 and coil location pipe 8, correspondence has through hole (not marking on figure), thereby the pig-tail wire 5a of described coil 5 passes from described through hole with the circuit for controlling motor plate (not shown in FIG.) of Electrical Bicycle and is electrically connected to, and the circuit for controlling motor plate is electrically connected to motor (not shown in FIG.).
The body of elastic torsion described in the present embodiment 3 right-hand members are wholely set the chain drum connector 11 with spline, described chain drum connector 11 is placed on axis 2, described chain drum 10 be provided with chain drum connector 11 on the splined hole of spline fitted, described chain drum connector 11 stretches out tightening cover and chain drum 10 assemblings of Five-way tube 1 one ends.Described axis 2 right-hand members are arranged with and the fixing chain drum gland 12 with the described chain drum 10 of axial locking of chain drum connector 11, and the gland of chain drum described in the present embodiment 12 is locked on chain drum connector 11.
Be provided with bearing 15 between the connector 11 of chain drum described in the present embodiment and axis 2, and between described left tightening cover 13 and described axis 2, and also be provided with bearing 15 between right tightening cover 14 and described chain drum connector 11.
The axis 2 that relates in the present embodiment is mounted with bicycle pedals with routine techniques is the same when reality is used, and is trampled and driven rotary by the people.
Specific works principle of the present invention is: in Electrical Bicycle startup and the process of riding, the people steps on 2 rotations of pedal drive axis, due to instantaneous when stressed at axis 2, it is relatively static that elastic torsion body 3 keeps under effect of inertia, so just make between axis 2 and elastic torsion body 3 and produce relative torsion, also namely make between magnet ring A and shading ring 4 produce relative rotation (rotational angle is little, about common 2 degree).And the variation that on the magnetic pole on magnet ring A and shading ring 4, the changing of the relative positions between corresponding window 4a has brought magnetic flux produces flux change amount δ, then obtains described flux change amount δ by coil 5 inductions, and to the voltage signal of converting and export to the circuit for controlling motor plate.Described circuit for controlling motor buttress is exported respectively corresponding control signal 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 above-described embodiment only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the person skilled in the art can understand content of the present invention and implement according to this, can not limit protection scope of the present invention with this.The all Spirit Essence of main technical schemes is done according to the present invention equivalent transformation or modification are within all should being encompassed in protection scope of the present invention.
Claims (9)
1. an electrical bicycle middle shaft torque sensor, comprise that Five-way tube (1) and rotation are assemblied in the axis (2) in Five-way tube (1); It is characterized in that fixing on described axis (2) or be integrally formed with magnet ring (A), described magnet ring (A) is upper is interval with some magnetic poles of alternately arranging with S, the N utmost point along even circumferential; Described axis (2) is provided with the elastic torsion body (3) by its driven rotary, shading ring (4) is upward fixed or be integrally formed with to described elastic torsion body (3), described shading ring (4) is placed on magnet ring (A), offers some windows for magnetic conduction (4a) along the even circumferential interval on it; Also comprise and be fixed in Five-way tube (1) and be positioned at the peripheral coil (5) that is used for the induction flux change of shading ring (4), the pig-tail wire (5a) of described coil (5) is electrically connected to the circuit for controlling motor plate of Electrical Bicycle, and the circuit for controlling motor plate is electrically connected to motor.
2. electrical bicycle middle shaft torque sensor according to claim 1 is characterized in that some magnet steel (7) that described magnet ring (A) is located at the steady ring (6) on axis (2) by fixing or one and the order even interval that replaces with S, the N utmost point along circumference is fixed on steady ring (6) consist of.
3. electrical bicycle middle shaft torque sensor according to claim 2 is characterized in that described steady ring (6) surface is interval with some magnet steel positioning grooves along even circumferential, and described magnet steel (7) fixes in described magnet steel positioning groove.
4. electrical bicycle middle shaft torque sensor according to claim 1, it is characterized in that described Five-way tube (1) is in-built has a coil location pipe (8), described Five-way tube (1) two ends are by being pressed into the described coil location pipe of tightening cover axial restraint (8), on the inwall of described coil location pipe (8) one ends, corresponding magnet ring (A) is provided with interior rank circular grooves (8a), described coil (5) embeds in described interior rank circular grooves (8a) from coil location pipe (8) one ends, and coil (5) outer end is by being placed on jump ring (9) axial restraint on elastic torsion body (3).
5. electrical bicycle middle shaft torque sensor according to claim 4, it is characterized in that the upper correspondence of described Five-way tube (1) and coil location pipe (8) has through hole, described through hole passes with the circuit for controlling motor plate of Electrical Bicycle for the described pig-tail wire (5a) of coil (5) and is electrically connected to.
6. electrical bicycle middle shaft torque sensor according to claim 4, characterized by further comprising chain drum (10), described elastic torsion body (3) one ends are wholely set the chain drum connector (11) with spline, described chain drum connector (11) is placed on axis (2), described chain drum (10) be provided with chain drum connector (11) on the splined hole of spline fitted, described chain drum connector (11) stretches out tightening cover and chain drum (10) assembling of Five-way tube (1) one end.
7. electrical bicycle middle shaft torque sensor according to claim 6, is characterized in that described axis (2) one ends are arranged with and the fixing chain drum gland (12) with the described chain drum of axial locking (10) of chain drum connector (11).
8. electrical bicycle middle shaft torque sensor according to claim 6, it is characterized in that being provided with bearing (15) between described chain drum connector (11) and axis (2), and described two tightening covers also are provided with bearing (15) respectively and between described axis (2) and described chain drum connector (11).
9. electrical bicycle middle shaft torque sensor according to claim 1, is characterized in that being integrally formed with on described elastic torsion body (3) spline housing (3a), and the spline (2a) that is provided with axis (2) is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310040778.0A CN103085931B (en) | 2013-02-01 | 2013-02-01 | Electric bicycle central shaft torsion force sensing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310040778.0A CN103085931B (en) | 2013-02-01 | 2013-02-01 | Electric bicycle central shaft torsion force sensing device |
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| Publication Number | Publication Date |
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| CN103085931A true CN103085931A (en) | 2013-05-08 |
| CN103085931B CN103085931B (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310040778.0A Active CN103085931B (en) | 2013-02-01 | 2013-02-01 | Electric bicycle central shaft torsion force sensing device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103381875A (en) * | 2013-08-08 | 2013-11-06 | 苏州捷诚科技有限公司 | Central shaft type torque sensor |
| CN105292370A (en) * | 2014-05-29 | 2016-02-03 | 苏州雄风电机有限公司 | Mid-mounted motor of electric bicycle |
| WO2018126909A1 (en) * | 2017-01-05 | 2018-07-12 | 广东美的制冷设备有限公司 | Air conditioner and detection control device and method for moving parts in air conditioner |
| CN108583768A (en) * | 2018-07-02 | 2018-09-28 | 常州野人电子科技有限公司 | A kind of power system of electric automobile, torque-measuring apparatus and its working method |
| CN109305281A (en) * | 2018-09-06 | 2019-02-05 | 苏州盛亿电机有限公司 | Electrical bicycle middle shaft bilateral legpower high-precision detection device |
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| US6278216B1 (en) * | 1999-05-04 | 2001-08-21 | I-Ho Li | Vehicle motor |
| CN2934010Y (en) * | 2006-08-17 | 2007-08-15 | 浙江福林国润汽车零部件有限公司 | torque sensor of automobile electric power assisted steering device |
| CN202083502U (en) * | 2011-04-08 | 2011-12-21 | 深圳市琛玛华夏科技有限公司 | Moment sensor of electric power-assisted vehicle |
| CN203111433U (en) * | 2013-02-01 | 2013-08-07 | 苏州盛亿电机有限公司 | Center shaft torsion sensing device of power-driven bicycle |
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2013
- 2013-02-01 CN CN201310040778.0A patent/CN103085931B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6278216B1 (en) * | 1999-05-04 | 2001-08-21 | I-Ho Li | Vehicle motor |
| CN2934010Y (en) * | 2006-08-17 | 2007-08-15 | 浙江福林国润汽车零部件有限公司 | torque sensor of automobile electric power assisted steering device |
| CN202083502U (en) * | 2011-04-08 | 2011-12-21 | 深圳市琛玛华夏科技有限公司 | Moment sensor of electric power-assisted vehicle |
| CN203111433U (en) * | 2013-02-01 | 2013-08-07 | 苏州盛亿电机有限公司 | Center shaft torsion sensing device of power-driven bicycle |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103381875A (en) * | 2013-08-08 | 2013-11-06 | 苏州捷诚科技有限公司 | Central shaft type torque sensor |
| CN105292370A (en) * | 2014-05-29 | 2016-02-03 | 苏州雄风电机有限公司 | Mid-mounted motor of electric bicycle |
| WO2018126909A1 (en) * | 2017-01-05 | 2018-07-12 | 广东美的制冷设备有限公司 | Air conditioner and detection control device and method for moving parts in air conditioner |
| CN108583768A (en) * | 2018-07-02 | 2018-09-28 | 常州野人电子科技有限公司 | A kind of power system of electric automobile, torque-measuring apparatus and its working method |
| CN109305281A (en) * | 2018-09-06 | 2019-02-05 | 苏州盛亿电机有限公司 | Electrical bicycle middle shaft bilateral legpower high-precision detection device |
| CN109305281B (en) * | 2018-09-06 | 2024-05-31 | 苏州盛亿电机有限公司 | High-precision detection device for double-side pedal force of middle shaft of electric bicycle |
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| Publication number | Publication date |
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| CN103085931B (en) | 2014-10-29 |
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