CN203806093U - Middle axle torque speed sensor of electric bicycle - Google Patents
Middle axle torque speed sensor of electric bicycle Download PDFInfo
- Publication number
- CN203806093U CN203806093U CN201420197915.1U CN201420197915U CN203806093U CN 203806093 U CN203806093 U CN 203806093U CN 201420197915 U CN201420197915 U CN 201420197915U CN 203806093 U CN203806093 U CN 203806093U
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- sensing device
- electrical bicycle
- middle shaft
- speed sensing
- thin slice
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- 239000000956 alloy Substances 0.000 claims abstract description 34
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 230000005291 magnetic effect Effects 0.000 claims abstract description 10
- 230000035699 permeability Effects 0.000 claims description 30
- 230000004044 response Effects 0.000 claims description 20
- 238000009826 distribution Methods 0.000 claims description 13
- 230000004907 flux Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000000565 sealant Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000006698 induction Effects 0.000 abstract description 2
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 230000005389 magnetism Effects 0.000 abstract 4
- 238000000034 method Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005292 diamagnetic effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model discloses a middle axle torque speed sensor of an electric bicycle. The sensor comprises a middle axle assembled in a five-way tube, a left crank, a right crank and a crankset, wherein the left crank and the right crank are fixed to the two ends of the middle axle, and the crankset is arranged on the middle axle in a sleeved mode. The middle axle is sleeved with a torque sleeve which can generate circumferential deformation when bearing circumferential torsional force, one end of the torque sleeve is fixed to the middle axle, the other end of the torque sleeve is fixed to the crankset, the outer sleeve wall of the torque sleeve is fixedly provided with a circle of magnetism conductive alloy sheets attached to the torque sleeve, the magnetism conductive alloy sheets are provided with multiple holes, the peripheries of the magnetism conductive alloy sheets are provided with coils used for detecting magnetism changes, the coils are connected with a motor controller through a signal processor, a speed Hall sensor connected with the signal processor is further fixed into the five-way tube, and the middle axle is fixedly provided with speed induction magnetic steel corresponding to the speed Hall sensor. The middle axle torque speed sensor is ingenious and reasonable in structure and high in sensitivity and accuracy.
Description
Technical field
The utility model relates to a kind of parts of Electrical Bicycle, is specifically related to a kind of electrical bicycle middle shaft moment speed sensing device.
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 carrys out speed governing with handgrip, with handgrip, control the horsepower output of motor, when at present increasing Electrical Bicycle mainly adopts torque sensor that people is ridden, the power of pedaling of pin converts corresponding voltage signal output to, after circuit for controlling motor plate amplifies processing, control the running power of motor, can greatly save the energy like this.
Sensor for Electrical Bicycle mostly is Hall revolution speed transducer at present, this sensor is used magnet steel to stick on 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 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.Yet there is following problems in this class Electrical Bicycle sensor:
1, can not detect Static and dynamic moment of torsion, survey precision is poor, can not zero start in riding, in level road and descending are ridden, there will be electric boosted excessive and make battery produce unnecessary electric discharge.
2, because magnet steel is not arranged on axis actv. force part, the change in displacement that it produces because of torsion is also not obvious, often obvious when slow speed of revolution, not obvious during high rotating speed, therefore make the output of induced potential signal inaccurate, the working stability of sensor and reliability all decline greatly.
Utility model content
The utility model object is: for the problems referred to above, provide the electrical bicycle middle shaft moment speed sensing device that a kind of induction sensitivity and accuracy are high.
The technical solution of the utility model is: described electrical bicycle middle shaft moment speed sensing device, comprise the axis being assemblied in Five-way tube, the left crank that is fixed on axis two ends and right crank and be sheathed on the chain wheel on axis, on described axis, cover has a moment sleeve pipe that can produce circumferential deformation when it is subject to circumferential twisting resistance, one end of this moment sleeve pipe and described axis are fixed, and the other end and described chain wheel are fixed; On the outer tube wall of described moment sleeve pipe, be fixed with a circle and this moment sleeve pipe and be close to the permeability alloys thin slice of layout, on described permeability alloys thin slice, gather and offer some holes, the peripheral disposition of described permeability alloys thin slice has the coil that detects heat treatment, described coil is connected with electric machine controller through a signal processor, in described Five-way tube, be also fixedly installed the velocity response Hall being connected with described signal processor, on described axis, be fixed with the velocity response magnet steel corresponding with described velocity response Hall.
As preferably, described signal processor is the signal processing circuit plate being arranged in Five-way tube.
As preferably, described velocity response Hall is integrated on described signal processing circuit plate.
As preferably, described hole is formed with the annular hole distribution band of at least two symmetrical distributions on permeability alloys thin slice, and the hole in each annular hole distribution band is all evenly spaced apart along the circumferencial direction of described permeability alloys thin slice.
As preferably, the hole distribution band of described annular has two.
As preferably, described hole is strip hole.
As preferably, described hole favours the length direction of described permeability alloys thin slice and arranges.
As preferably, the angle between described hole and the length direction of permeability alloys thin slice is 45 °.
As preferably, in described Five-way tube, be provided with the flux sleeve and the magnetic conduction pad that cover on outside described coil.
As preferably, in described Five-way tube, be furnished with positioning adapter, Five-way tube two ends by be pressed into left wrister and the right side protect bowl and by described positioning adapter axial locking, between described signal processing circuit plate and described positioning adapter, sealant pouring and sealing is fixed, described coil winding is on described positioning adapter.
The utility model has the advantages that:
1, in the utility model, only need the stressed torsion of axis to obtain torque signals by coil, therefore can detect Static and dynamic moment of torsion, compare existing Hall moment sensor, serviceability is more reliable and more stable, but also can guarantee that Electrical Bicycle riding middle zero start keep the stable of rideability.
2, the utility model can detect torque signals and the speed signal of axis simultaneously, comprehensively according to the size of torque signals and speed signal, controls the horsepower output of motor, and the mode of operation that makes motor is closing to reality demand more.
3, on this moment speed sensing device of the utility model, be provided with the signal processor that can process torque signals and speed signal, this signal processor and axis are set together, thereby make this sensing device just can each product be produced and be debugged before dispatching from the factory, because the sensed parameter of each product is different, personalized, so need each sensing device to debug before dispatching from the factory, guarantee conformability and the commonality of the product after dispatching from the factory.If signal processor and axis are not set together, torque force device and signal processor just need to arrive car load factory and be installed separately, and will cause the difference between vehicle, and commonality and conformability are just poor.Signal processor is contained on axis, and this speed moment sensor of making can be used as a whole set of product and sells, and conformability and commonality are relatively good.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is the integral structure schematic diagram of this electrical bicycle middle shaft moment of the utility model embodiment speed sensing device.
Fig. 2 is one of local structure schematic diagram of this electrical bicycle middle shaft moment of the utility model embodiment speed sensing device.
Fig. 3 be this electrical bicycle middle shaft moment of the utility model embodiment speed sensing device local structure schematic diagram two.
Fig. 4 is the A portion enlarged drawing of Fig. 1.
Fig. 5 is the perspective view of this electrical bicycle middle shaft moment of the utility model embodiment speed sensing device;
Wherein: the left wrister of 1-, the right wrister of 2-, 4-axis, 5-moment sleeve pipe, 6-signal processing circuit plate, 7-flux sleeve, 8-magnetic conduction pad, 9-pig-tail wire, 10-positioning adapter, 11-wire circlip, 12-velocity response magnet steel, 13-seat crank, the right crank of 14-, 15-bolt, 16-chain wheel, 17-hole, 18-velocity response Hall, 19-coil, 20-permeability alloys thin slice.
The specific embodiment
Fig. 1～Fig. 4 has shown a specific embodiment of this electrical bicycle middle shaft moment of the utility model speed sensing device, and it mainly consists of left wrister 1, right wrister 2, axis 4, moment sleeve pipe 5, signal processing circuit plate 6, permeability alloys thin slice, magnetic conduction pad 8, pig-tail wire 9, positioning adapter 10, wire circlip 11, velocity response magnet steel 12, left crank 13, right crank 14, bolt 15, chain wheel 16, permeability alloys thin slice 17, velocity response Hall 18, velocity response magnet steel 12 these parts.
The same with routine techniques, during assembling, described axis 4 will be located in Five-way tube (not shown), the two ends of axis 4 are all fixedly connected with respectively left crank 13 and right crank 14 by bolt 15, sheathed chain wheel 16 on described axis 4 of while, this chain wheel 16 is positioned at the right side of Five-way tube, and Five-way tube two ends are respectively arranged with left wrister 1 and right wrister 2.The left crank relating in the present embodiment is mounted with electric bicycle pedal with routine techniques is the same when reality is used with right crank, and is trampled and driven rotary by people.
Key improvements of the present utility model is: on axis 4, cover has a moment sleeve pipe 5 that can produce circumferential deformation when it is subject to circumferential twisting resistance, and one end of this moment sleeve pipe 5 and axis 4 are fixing, and the other end and chain wheel 16 are fixing.On the outer tube wall of described moment sleeve pipe 5, be fixed with a circle and this moment sleeve pipe and be close to the permeability alloys thin slice 20 of layout, on permeability alloys thin slice 20, gather and offer many holes 17.The peripheral disposition of permeability alloys thin slice 20 has the coil that can detect heat treatment, and this coil is connected with electric machine controller through a signal processor.In Five-way tube, be also fixedly installed the velocity response Hall being connected with described signal processor, on axis 4, be fixed with the velocity response magnet steel corresponding with described velocity response Hall.
Refer again to shown in Fig. 1, now the principle of work of this electrical bicycle middle shaft moment of the present embodiment speed sensing device be simply described below:
At Electrical Bicycle, ride in process, people steps on pedal drive left and right crank and axis 4 rotations, and 4 of axis pass to moment sleeve pipe 5 by torsion, and moment sleeve pipe 5 passes to torsion chain wheel 16 again, and chain wheel drives chain rotation.In this process, because moment sleeve pipe 5 is subject to circumferential torsion, thereby make it that circumferential deformation occur, so, also will there is circumferential deformation in the permeability alloys thin slice 20 being fixed on moment sleeve pipe 5, and the change of shape and area also occurs the hole on permeability alloys thin slice 20 17 thereupon, and then cause that described coil magnetic field around changes, make coil produce electro-motive force and change, thereby to described signal processor input torque signal.Meanwhile, velocity response magnet steel 12 changes the magnetic field of its generation with axis 4 rotations, utilizes velocity response Hall 18 to obtain the changes of magnetic field speed signal of velocity response magnet steel 12, and this speed signal is transferred to signal processor.The torque signals that signal processor receives it and speed signal carry out comprehensive treatment, after converting corresponding electric signal to, through pig-tail wire 9, export to electric machine controller, electric signal that circuit for controlling motor buttress transmits according to signal processor is strong and weak and export corresponding control signal, drive the motor of Electrical Bicycle to reduce or improve running power to play good power-assisted effect, save the energy.
Hole 17 on permeability alloys thin slice 20 has the effect of the deformability that strengthens permeability alloys thin slice 20, also has the effect that destruction occurs the self structure of avoiding permeability alloys thin slice 20 to produce because of frequent deformation simultaneously.
In the present embodiment, described signal processor is a signal processing circuit plate 6 being arranged in Five-way tube, and certainly, it also can adopt other versions that are positioned at Five-way tube outside.And described velocity response Hall 18 is to be directly integrated on this signal processing circuit plate 6.
Described hole 17 can adopt the various passes such as circular hole, square hole, elliptical aperture, and hole described in this example 17 is strip hole.And the annular hole distribution band that described hole 17 is formed with at least two (this example is two) symmetrical distributions on permeability alloys thin slice 20 (is the annular arrangement that is shaped as of hole distribution band, as Fig. 3), the hole 17 in each annular hole distribution band is all evenly spaced apart along the circumferencial direction of described permeability alloys thin slice 20.
In this example, described hole 17 favours the length direction (being also axial direction) of permeability alloys thin slice 20 and arranges.Angle between this routine Hole 17 (length direction) and the length direction of permeability alloys thin slice 20 is 45 °, because of the symmetrical distribution of hole, therefore can be understood as: the angle between the hole 17 in left side and the length direction of permeability alloys thin slice 20 is+45 °, and angle between the hole 17 on right side and the length direction of permeability alloys thin slice 20 is-45 °, as Fig. 3.
This example is provided with flux sleeve 7 and the magnetic conduction pad 8 that covers on outside coil 19 in described Five-way tube, and 19 magnetic screening actions of 8 pairs of coils of the flux sleeve 7 of setting and magnetic conduction pad, to improve the diamagnetic interference performance of coil 19.
The concrete assembling mode of the plate 6 of signal processing circuit described in this example and coil 19 is as follows: in Five-way tube, be furnished with a positioning adapter 10, bowl 2 is protected and axial locking positioning adapter 10 by being pressed into left wrister 1 and the right side in Five-way tube two ends, between signal processing circuit plate 6 and positioning adapter 10, sealant pouring and sealing is fixed, and coil 19 is wrapped on positioning adapter 10.
Certainly, above-described embodiment is only explanation technical conceive of the present utility model and feature, and its object is to allow people can understand content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalent transformations of doing according to the Spirit Essence of the utility model main technical schemes or modification, within all should being encompassed in protection domain of the present utility model.
Claims (10)
1. an electrical bicycle middle shaft moment speed sensing device, comprise the axis (4) being assemblied in Five-way tube, the left crank (13) that is fixed on axis (4) two ends and right crank (14) and be sheathed on the chain wheel (16) on axis (4), it is characterized in that: the upper cover of described axis (4) has a moment sleeve pipe (5) that can produce circumferential deformation when it is subject to circumferential twisting resistance, one end of this moment sleeve pipe (5) and described axis (4) are fixing, and the other end and described chain wheel (16) are fixing; on the outer tube wall of described moment sleeve pipe (5), be fixed with a circle and this moment sleeve pipe and be close to the permeability alloys thin slice (20) of layout, upper the gathering of described permeability alloys thin slice (20) offers some holes (17), the peripheral disposition of permeability alloys thin slice (20) has the coil (19) that detects heat treatment, described coil (19) is connected with electric machine controller through a signal processor, in described Five-way tube, be also fixedly installed the velocity response Hall (18) being connected with described signal processor, on described axis (6), be fixed with the velocity response magnet steel (12) corresponding with described velocity response Hall (18).
2. electrical bicycle middle shaft moment speed sensing device according to claim 1, is characterized in that: described signal processor is the signal processing circuit plate (6) being arranged in Five-way tube.
3. electrical bicycle middle shaft moment speed sensing device according to claim 2, is characterized in that: described velocity response Hall (18) is integrated on described signal processing circuit plate (6).
4. electrical bicycle middle shaft moment speed sensing device according to claim 1, it is characterized in that: described hole (17) is formed with the annular hole distribution band of at least two symmetrical distributions on permeability alloys thin slice (20), the hole (17) in each annular hole distribution band is all evenly spaced apart along the circumferencial direction of described permeability alloys thin slice (20).
5. electrical bicycle middle shaft moment speed sensing device according to claim 4, is characterized in that: the hole distribution band of described annular has two.
6. electrical bicycle middle shaft moment speed sensing device according to claim 4, is characterized in that: described hole (17) is strip hole.
7. electrical bicycle middle shaft moment speed sensing device according to claim 6, is characterized in that: described hole (17) favours the length direction of described permeability alloys thin slice (20) and arranges.
8. electrical bicycle middle shaft moment speed sensing device according to claim 7, is characterized in that: the angle between described hole (17) and the length direction of permeability alloys thin slice (20) is 45 °.
9. electrical bicycle middle shaft moment speed sensing device according to claim 1, is characterized in that: in described Five-way tube, be provided with and cover on described coil (19) outer flux sleeve (7) and magnetic conduction pad (8).
10. electrical bicycle middle shaft moment speed sensing device according to claim 2, it is characterized in that: in described Five-way tube, be furnished with positioning adapter (10), bowl (2) and by described positioning adapter (10) axial locking is protected by being pressed into left wrister (1) and the right side in Five-way tube two ends, between described signal processing circuit plate (6) and described positioning adapter (10), sealant pouring and sealing is fixed, and described coil (19) is wrapped on described positioning adapter (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420197915.1U CN203806093U (en) | 2014-04-22 | 2014-04-22 | Middle axle torque speed sensor of electric bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420197915.1U CN203806093U (en) | 2014-04-22 | 2014-04-22 | Middle axle torque speed sensor of electric bicycle |
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| Publication Number | Publication Date |
|---|---|
| CN203806093U true CN203806093U (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420197915.1U Expired - Lifetime CN203806093U (en) | 2014-04-22 | 2014-04-22 | Middle axle torque speed sensor of electric bicycle |
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| CN (1) | CN203806093U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104724244A (en) * | 2014-10-31 | 2015-06-24 | 太仓市悦博电动科技有限公司 | Built-in-motor electric-bicycle middle axle force moment sensing system |
| WO2015161545A1 (en) * | 2014-04-22 | 2015-10-29 | 苏州八方电机科技有限公司 | Electric bicycle central axle torque speed sense device |
| WO2016065500A1 (en) * | 2014-10-31 | 2016-05-06 | 太仓市荣驰电机有限公司 | Electric vehicle central shaft torque sensing system |
| CN106627964A (en) * | 2016-11-22 | 2017-05-10 | 昆山朗德森机电科技有限公司 | Torque sensor and detecting system for electric bicycle |
| EP3620364A4 (en) * | 2017-05-05 | 2021-03-10 | Giant Electric Vehicle Kunshan Co., Ltd | Device for detecting vehicle operation parameters |
-
2014
- 2014-04-22 CN CN201420197915.1U patent/CN203806093U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015161545A1 (en) * | 2014-04-22 | 2015-10-29 | 苏州八方电机科技有限公司 | Electric bicycle central axle torque speed sense device |
| CN105015692A (en) * | 2014-04-22 | 2015-11-04 | 苏州八方电机科技有限公司 | Torque-speed sensing device for center shaft of electric bicycle |
| CN104724244A (en) * | 2014-10-31 | 2015-06-24 | 太仓市悦博电动科技有限公司 | Built-in-motor electric-bicycle middle axle force moment sensing system |
| WO2016065500A1 (en) * | 2014-10-31 | 2016-05-06 | 太仓市荣驰电机有限公司 | Electric vehicle central shaft torque sensing system |
| CN104724244B (en) * | 2014-10-31 | 2018-03-02 | 太仓市悦博电动科技有限公司 | A kind of built-in motor electrical bicycle middle shaft moment sensing system |
| US10358185B2 (en) | 2014-10-31 | 2019-07-23 | Taicang Rongchi Motor Co., Ltd | Electric vehicle central shaft torque sensing system |
| CN106627964A (en) * | 2016-11-22 | 2017-05-10 | 昆山朗德森机电科技有限公司 | Torque sensor and detecting system for electric bicycle |
| EP3620364A4 (en) * | 2017-05-05 | 2021-03-10 | Giant Electric Vehicle Kunshan Co., Ltd | Device for detecting vehicle operation parameters |
| US11320328B2 (en) | 2017-05-05 | 2022-05-03 | Giant Electric Vehicle Kunshan Co., Ltd | Operation parameter detecting apparatus for vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Suzhou City Industrial Park Loufeng town and the road of 215000 Jiangsu province No. 9 Patentee after: BAFANG ELECTRIC (SUZHOU) Co.,Ltd. Address before: Suzhou City Industrial Park Loufeng town and the road of 215000 Jiangsu province No. 9 Patentee before: SUZHOU BAFANG ELECTRIC MOTOR SCIENCE-TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140903 |
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| CX01 | Expiry of patent term |