CN203111433U - Center shaft torsion sensing device of power-driven bicycle - Google Patents
Center shaft torsion sensing device of power-driven bicycle Download PDFInfo
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- CN203111433U CN203111433U CN 201320059427 CN201320059427U CN203111433U CN 203111433 U CN203111433 U CN 203111433U CN 201320059427 CN201320059427 CN 201320059427 CN 201320059427 U CN201320059427 U CN 201320059427U CN 203111433 U CN203111433 U CN 203111433U
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- chain drum
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- electrical bicycle
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Abstract
The utility model discloses a center shaft torsion sensing device of a power-driven bicycle. The center shaft torsion sensing device of the power-driven bicycle comprises a five-way pipe, a center shaft which is arranged in the five-way pipe in a rotation mode and a coil and is characterized in that a magnetic ring is fixed on or integrated with the center shaft. Multiple magnetic poles are evenly arranged on the periphery of the magnetic ring at intervals, wherein S magnetic poles and N magnetic poles are arranged in an alternative mode. An elastic torsion body driven by the center shaft to rotate is arranged on the center shaft. An isolation ring is fixed on or integrated with the elastic torsion body. The isolation ring is sleeved on the magnetic ring. Windows used for conducting magnetism are evenly arranged in the periphery of the isolation ring at intervals. The coil is fixed in the five-way pipe, arranged on the periphery of the isolation ring and used for sensing flux variation. An outgoing line of the coil is electrically connected with a motor control circuit board of the power-driven bicycle. The motor control circuit board is electrically connected with a motor. The center shaft torsion sensing device of the power-driven bicycle is high in sensing sensitivity and precision, capable of detecting static and dynamic torque, more stable and reliable in working performance, capable of ensuring zero start-up of the power-driven bicycle in riding and capable of keeping riding performance stable.
Description
Technical field
The utility model relates to a kind of Electrical Bicycle axis torque sensor.
Background technology
Electrical Bicycle since its brisk characteristics such as laborsaving and pollution-free promote the use in China just day by day.Traditional Electrical Bicycle all comes speed governing with handgrip, namely control the horsepower output of motor with handgrip, the power of pedaling of pin converted corresponding voltage signal output to when at present increasing Electrical Bicycle then mainly adopted torsion torque sensor that the people is ridden, the running power of control motor can be saved the energy so greatly after the circuit for controlling motor plate amplifies processing.
The torsion torque sensor that is used for Electrical Bicycle at present mostly is the Hall tachogen, this sensor uses magnet steel to stick on turning unit surfaces such as the axis of Electrical Bicycle or flywheel, and at non-rotatable members such as vehicle frame main shafts 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, after amplifying processing, can control the horsepower output of motor.There is following problems in this class Electrical Bicycle sensor: 1, can not detect static state and dynamic torque, survey precision is poor, can not zero start in riding, in level road and descending are ridden, 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 of Electrical Bicycle, cause magnet steel on it and the position between the Hall element to change, make that the output of induced potential signal is no longer accurate, the working stability of sensor and reliability all descend greatly.
Summary of the invention
The utility model purpose is: provide a kind of and can detect static and dynamic torque and the more reliable and more stable Electrical Bicycle axis torque sensor of serviceability, this sensing device can also be guaranteed Electrical Bicycle zero start and keep stablizing of rideability in riding.
The technical solution of the utility model is: a kind of Electrical Bicycle axis torque sensor comprises that five-way pipe and rotation are assemblied in the axis in the five-way pipe; It is characterized in that fixing on the described axis or being integrally formed with magnet ring, described magnet ring upper edge circumference evenly is interval with some magnetic poles of alternately arranging with S, the N utmost point; Described axis is provided with the elastic torsion body by its driven rotary, fixes or be integrally formed with shading ring on the described elastic torsion body, and described barrier cuff is on magnet ring, and its upper edge circumference is evenly offered some windows for magnetic conduction at interval; Comprise also being fixed in the five-way pipe and being positioned at the peripheral coil that is used for the induction flux change of shading ring that the pig-tail wire of described coil is electrically connected with the circuit for controlling motor plate of Electrical Bicycle, the circuit for controlling motor plate then is electrically connected with motor.
Further, magnet ring described in the utility model is located at the steady ring on the axis by fixing or one and is constituted with the some magnet steel of the even fixed interval of order on steady ring that S, the N utmost point replace along circumference.
Further, the surface of steady ring described in the utility model evenly is interval with some magnet steel positioning grooves along circumference, and described magnet steel fixes in described magnet steel positioning groove.
Further, in the pipe of five-way described in the utility model the coil location pipe is housed, described five-way pipe two ends are by being pressed into the described coil location pipe of tightening cover axial restraint, rank circular groove in corresponding magnet ring is provided with on the inwall of described coil location Guan Yiduan, 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, correspondence has through hole on the pipe of five-way described in the utility model and the coil location pipe, 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.
Further, the utility model also comprises chain drum, described elastic torsion body one end is wholely set the chain drum connector that has spline, described chain drum connector is placed on the 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 Guan Yiduan.
Further again, one end of axis described in the utility model is arranged with and the fixing chain drum gland with the described chain drum of axial locking of chain drum connector.
Further again, be provided with bearing between the connector of chain drum described in the utility model and the axis, and described two tightening covers also are provided with bearing respectively and between described axis and the described chain drum connector.
Further, be integrally formed with spline housing on the body of elastic torsion described in the utility model, 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 utility model made, spring steel pipe for example, and be the twisting property of further strengthening this class steel pipe, also can be in the evenly punching at interval of steel pipe walls upper edge helix line, or mill out one of inside and outside plug helix at least, or cut out helical cuts.Certainly, the elastic torsion body in the utility model also can adopt conventional spring.
The axis that relates in the utility model when reality is used with routine techniques the same with the bicycle pedals mount, and trampled and driven rotary by the people.
Concrete principle of work of the present utility model is: in Electrical Bicycle startup and the process of riding, the people steps on the foot-operated axis rotation that drives, because it is instantaneous when stressed at axis, it is static relatively that the elastic torsion body keeps under effect of inertia, so just make to produce between axis and the elastic torsion body and reverse relatively, also namely make and produce relative rotation between magnet ring and the shading ring (rotational angle is little, about common 2 degree).And the variation that the changing of the relative positions between the corresponding window has brought magnetic flux on the magnetic pole on the magnet ring and the shading ring produces flux change amount δ, again by the described flux change amount of coil-induced acquisition δ, and to the voltage signal of converting and exports to the circuit for controlling motor plate.Described circuit for controlling motor buttress is exported 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, saves the energy greatly.
The effect of the plate of circuit for controlling motor described in the utility model is the voltage signal of receiving coil output, and exports corresponding control signal according to voltage signal and give motor, and drive motor changes horsepower output, and its implementation is well known to those skilled in the art.
The utility model has the advantages that:
The utility model by magnet ring and when having relatively rotating between the shading ring of window the people being trampled the suffered torque magnitude of axis be converted to flux change amount δ, namely realize conversion between axis torsion and the 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 high sensitivity and the high precision of induced signal all the time.
2. only need relatively rotate between axis of the present utility model and the elastic torsion body, can respond to torsion signal, so can detect static state and dynamic torque, compare existing Hall torsion torque sensor, serviceability is more reliable and more stable, but also can guarantee Electrical Bicycle zero start and keep the stable of rideability in riding.
3. the utility model is simple in structure, convenient for production, low cost of manufacture.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that the A-A of Fig. 1 is to cutaway view.
Wherein: 1, five-way pipe; 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: in conjunction with illustrated in figures 1 and 2 be a kind of specific embodiment of the utility model Electrical Bicycle axis torque sensor, it together is made up of five-way pipe 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 places in the five-way pipe 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, cooperate with spline 2a that axis 2 is provided with fixing, thereby make elastic torsion body 3 to rotate together in company with axis 2.
The A of magnet ring described in present embodiment upper edge circumference evenly is interval with 12 magnetic poles of alternately arranging with S, the N utmost point.Specifically in conjunction with shown in Figure 2, described magnet ring A specifically is located at the steady ring 6 on the axis 2 by one and constitutes jointly with 12 magnet steel 7 of the even fixed interval of order on steady ring 6 that S, the N utmost point replace along circumference.And 12 magnet steel positioning grooves are evenly offered at interval along circumference in 6 surfaces of steady ring described in the present embodiment, thereby described magnet steel 7 corresponding fixings in corresponding magnet steel positioning groove form 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 the magnet ring A, and its upper edge circumference is evenly offered 4 window 4a that are used for magnetic conduction at interval, specifically sees shown in Figure 2.At initial condition, also be that the gap of adjacent two magnet steel 7 is over against window 4a under the not stressed static condition of axis.
In the pipe of five-way described in the present embodiment 1 coil location pipe 8 is housed, described five-way pipe 1 two ends are by being pressed into left and right tightening cover 13, the described coil location pipe 8 of 14 axial restraints, rank circular groove 8a in corresponding magnet ring A is provided with on the inwall of described coil location pipe 8 one ends, described coil 5 embeds in the 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 the elastic torsion body 3.Described coil 5 is positioned at the shading ring 4 peripheral induction flux change that are used for.Correspondence has through hole (not marking on the figure) on described five-way pipe 1 and the coil location pipe 8, thereby the pig-tail wire 5a of described coil 5 passes from described through hole with the circuit for controlling motor plate (not drawing among the figure) of Electrical Bicycle and is electrically connected, and the circuit for controlling motor plate then is electrically connected with motor (not drawing among the figure).
The body of elastic torsion described in the present embodiment 3 right-hand members are wholely set the chain drum connector 11 that has spline, described chain drum connector 11 is placed on the 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 pipe 1 one ends.Described axis 2 right-hand members are arranged with and chain drum connector 11 fixing chain drum glands 12 with the described chain drum 10 of axial locking, 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 the axis 2, and between described left tightening cover 13 and the described axis 2, and also be provided with bearing 15 between right tightening cover 14 and the described chain drum connector 11.
The axis 2 that relates in the present embodiment when reality is used with routine techniques the same with the bicycle pedals mount, and trampled and driven rotary by the people.
Concrete principle of work of the present utility model is: in Electrical Bicycle startup and the process of riding, the people steps on foot-operated axis 2 rotations that drive, because it is instantaneous when stressed at axis 2, it is static relatively that elastic torsion body 3 keeps under effect of inertia, so just make to produce between axis 2 and the elastic torsion body 3 and reverse relatively, also namely make and produce relative rotation between magnet ring A and the shading ring 4 (rotational angle is little, about common 2 degree).And the variation that the changing of the relative positions between the corresponding window 4a has brought magnetic flux on the magnetic pole on the magnet ring A and the shading ring 4 produces flux change amount δ, obtains described flux change amount δ by coil 5 inductions again, and to the voltage signal of converting and export to the circuit for controlling motor plate.Described circuit for controlling motor buttress is exported 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, saves the energy greatly.
Certainly above-described embodiment only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the people who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection domain of the present utility model with this.All equivalent transformation or modifications of doing according to the spiritual essence of the utility model main technical schemes all should be encompassed within the protection domain of the present utility model.
Claims (9)
1. an Electrical Bicycle axis torque sensor comprises that five-way pipe (1) and rotation are assemblied in the axis (2) in the five-way pipe (1); It is characterized in that fixing on the described axis (2) or being integrally formed with magnet ring (A), described magnet ring (A) upper edge circumference evenly is interval with some magnetic poles of alternately arranging with S, the N utmost point; Described axis (2) is provided with the elastic torsion body (3) by its driven rotary, described elastic torsion body (3) is gone up fixing or is integrally formed with shading ring (4), described shading ring (4) is placed on the magnet ring (A), and its upper edge circumference is evenly offered some windows for magnetic conduction (4a) at interval; Also comprise and be fixed in the five-way pipe (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 with the circuit for controlling motor plate of Electrical Bicycle, and the circuit for controlling motor plate then is electrically connected with motor.
2. Electrical Bicycle axis torque sensor according to claim 1 is characterized in that some magnet steel (7) formation of the even fixed interval of order on steady ring (6) that described magnet ring (A) is located at the steady ring (6) on the axis (2) and is replaced with S, the N utmost point along circumference by fixing or one.
3. Electrical Bicycle axis torque sensor according to claim 2 is characterized in that described steady ring (6) surface evenly is interval with some magnet steel positioning grooves along circumference, and described magnet steel (7) fixes in described magnet steel positioning groove.
4. Electrical Bicycle axis torque sensor according to claim 1, it is characterized in that being equipped with in the described five-way pipe (1) coil location pipe (8), described five-way pipe (1) two ends are by being pressed into the described coil location pipe of tightening cover axial restraint (8), rank circular grooves (8a) in corresponding magnet ring (A) is provided with on the inwall of described coil location pipe (8) one ends, described coil (5) embeds in the 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 the elastic torsion body (3).
5. Electrical Bicycle axis torque sensor according to claim 4, it is characterized in that the last correspondence of described five-way pipe (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.
6. Electrical Bicycle axis torque sensor according to claim 4, it is characterized in that also comprising chain drum (10), described elastic torsion body (3) one ends are wholely set the chain drum connector (11) that has spline, described chain drum connector (11) is placed on the 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 pipe (1) one end.
7. Electrical Bicycle axis 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 axis torque sensor according to claim 6, it is characterized in that being provided with bearing (15) between described chain drum connector (11) and the axis (2), and described two tightening covers also are provided with bearing (15) respectively and between described axis (2) and the described chain drum connector (11).
9. Electrical Bicycle axis torque sensor according to claim 1 is characterized in that being integrally formed with on the described elastic torsion body (3) spline housing (3a), cooperates fixing with the spline (2a) that axis (2) is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320059427 CN203111433U (en) | 2013-02-01 | 2013-02-01 | Center shaft torsion sensing device of power-driven bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320059427 CN203111433U (en) | 2013-02-01 | 2013-02-01 | Center shaft torsion sensing device of power-driven bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203111433U true CN203111433U (en) | 2013-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320059427 Withdrawn - After Issue CN203111433U (en) | 2013-02-01 | 2013-02-01 | Center shaft torsion sensing device of power-driven bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203111433U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103085931A (en) * | 2013-02-01 | 2013-05-08 | 苏州盛亿电机有限公司 | Electric bicycle central shaft torsion force sensing device |
| CN108692844A (en) * | 2017-04-11 | 2018-10-23 | 向股份有限公司 | Electric flywheel torsion measuring device |
| CN110799799A (en) * | 2017-06-02 | 2020-02-14 | 爱德拜克私人有限公司 | Displacement measuring device |
| EP3804821A1 (en) * | 2019-10-08 | 2021-04-14 | Tonic Fitness Technology, Inc. | Torque measuring device for a flywheel |
| CN113418637A (en) * | 2021-07-22 | 2021-09-21 | 珠海市钧兴机电有限公司 | Torsion sensor for electric bicycle |
-
2013
- 2013-02-01 CN CN 201320059427 patent/CN203111433U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103085931A (en) * | 2013-02-01 | 2013-05-08 | 苏州盛亿电机有限公司 | Electric bicycle central shaft torsion force sensing device |
| CN103085931B (en) * | 2013-02-01 | 2014-10-29 | 苏州盛亿电机有限公司 | Electric bicycle central shaft torsion force sensing device |
| CN108692844A (en) * | 2017-04-11 | 2018-10-23 | 向股份有限公司 | Electric flywheel torsion measuring device |
| CN110799799A (en) * | 2017-06-02 | 2020-02-14 | 爱德拜克私人有限公司 | Displacement measuring device |
| CN110799799B (en) * | 2017-06-02 | 2022-04-29 | 爱德拜克私人有限公司 | Displacement measuring device |
| EP3804821A1 (en) * | 2019-10-08 | 2021-04-14 | Tonic Fitness Technology, Inc. | Torque measuring device for a flywheel |
| CN113418637A (en) * | 2021-07-22 | 2021-09-21 | 珠海市钧兴机电有限公司 | Torsion sensor for electric bicycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130807 Effective date of abandoning: 20141029 |
|
| RGAV | Abandon patent right to avoid regrant |