CN210653525U - Power-assisted bicycle torque sensor and power-assisted bicycle - Google Patents
Power-assisted bicycle torque sensor and power-assisted bicycle Download PDFInfo
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- CN210653525U CN210653525U CN201921663233.4U CN201921663233U CN210653525U CN 210653525 U CN210653525 U CN 210653525U CN 201921663233 U CN201921663233 U CN 201921663233U CN 210653525 U CN210653525 U CN 210653525U
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- 238000001514 detection method Methods 0.000 claims abstract description 91
- 230000006698 induction Effects 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims description 4
- 230000035945 sensitivity Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 4
- 230000008859 change Effects 0.000 description 15
- 230000035699 permeability Effects 0.000 description 10
- 230000006872 improvement Effects 0.000 description 8
- 230000009471 action Effects 0.000 description 4
- 239000000696 magnetic material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000306 component Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
- B62M6/40—Rider propelled cycles with auxiliary electric motor
- B62M6/45—Control or actuating devices therefor
- B62M6/50—Control or actuating devices therefor characterised by detectors or sensors, or arrangement thereof
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- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model discloses a moped torque sensor and a moped, wherein the moped torque sensor comprises a middle shaft, a strain detection unit arranged on the middle shaft, an induction coil and a signal processing unit electrically connected with the induction coil; the induction coil is arranged along the periphery of the strain detection unit; the strain detection unit comprises a plurality of strain detection strips which are uniformly coated on the outer side wall of the middle shaft along the circumferential direction of the middle shaft, and two ends of each strain detection strip are free ends. The utility model provides the high stability of detecting element that meets an emergency at epaxial installation, and improved the sensitivity that the magnetic conductivity under the moment of torsion effect of detecting element that meets an emergency changes.
Description
Technical Field
The utility model relates to a power bicycle technical field, especially a power bicycle torque sensor and power bicycle.
Background
The booster bicycle is a new type two-wheel vehicle, belonging to a kind of bicycle, and using battery as auxiliary power source, and equipped with motor, and possesses power auxiliary system, and can implement manpower riding and motor-assisted integrated new type transportation means. The torque sensor is a core component for understanding the intention of a rider of the electric power-assisted system of the power-assisted bicycle, and the output power of the motor of the electric bicycle can be adjusted according to the measured torque in the riding process due to the existence of the torque sensor, so that the riding comfort is improved.
At present, a torque sensor is increasingly mounted on a center shaft of the power-assisted bicycle, and a common scheme in the industry at present is to paste a strain gauge on the center shaft or a sleeve connected with the center shaft, to sense the magnitude of treading torque force through the strain gauge, to output a voltage signal after signal processing, and to further control the output power of a motor. The scheme has higher requirement on the adhesion of the strain gauge, the transmission modes of power supply and signals are complex, and the hidden trouble of strain gauge peeling is caused under the conditions of long-term dynamic stress and vibration, so that the stability and the reliability of the torque sensor of the scheme are not high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a moped torque sensor to solve the technical problem among the prior art, improved the stability of meeting an emergency the detecting element at epaxial installation, and improved the sensitivity of meeting an emergency the detecting element's magnetic permeability change under the moment of torsion effect.
The utility model provides a torque sensor of a power-assisted bicycle, which comprises a middle shaft, a strain detection unit arranged on the middle shaft, an induction coil and a signal processing unit electrically connected with the induction coil; the induction coil is arranged along the periphery of the strain detection unit; the strain detection unit comprises a plurality of strain detection strips which are uniformly coated on the outer side wall of the middle shaft along the circumferential direction of the middle shaft, and two ends of each strain detection strip are free ends; the free ends of two adjacent strain detection strips are mutually spaced along the circumferential direction of the middle shaft.
As a further improvement of the present invention, a free end of the strain gauge strip extends to the central shaft stop collar.
As a further improvement of the utility model, the strain detection strip has a parallelogram structure.
As a further improvement of the utility model, the strain detection strip is in projection on centraxonial axle section with centraxonial extending direction is 45 skew.
As a further improvement, the strain detection unit is provided with two, two be provided with the clearance between the strain detection unit.
As a further improvement of the present invention, two the extending direction of the strain detecting strip on the strain detecting unit is not uniform.
As the further improvement of the utility model, two the last strain detection strip of strain detection unit is in projection mutually perpendicular on centraxonial axle section.
As a further improvement of the present invention, the torque sensor of the power-assisted bicycle further comprises a sleeve, wherein the sleeve is arranged outside the middle shaft, and the sleeve is provided with a coil fixing groove for installing and fixing the induction coil; the signal processing unit is fixed on the sleeve.
As a further improvement, the torque sensor of the power-assisted bicycle further comprises a shielding case, and the shielding case is sleeved on the outer side of the sleeve.
The utility model also discloses a power-assisted bicycle, including the above-mentioned bicycle torque sensor, cover establish in the epaxial magnetic ring of centre, with the magnetic ring corresponding setting in order to detect the rotational speed of centre shaft hall sensor, respectively the cover establish in epaxial first bearing and second bearing, cover establish the left tooth bowl and the cover establish on the second bearing right tooth bowl on the first bearing, left tooth bowl and right tooth bowl's lateral wall all is provided with the external screw thread that is used for being connected fixedly with the five-way junction; the Hall sensor is arranged on the periphery of the magnetic ring and is electrically connected with the signal processing unit.
Compared with the prior art, the utility model discloses a mode that modern production technology scribbled established sets up magnetic material epaxial in order to form the detecting element that meets an emergency, compares in prior art through its more firm of mode of epaxial subsides foil gage, has avoided coming off that detecting element appears in long-time use, makes more firm of detecting element and centraxonial combination, has improved torque sensor torque detection's reliability and stability. Meanwhile, the detection unit is arranged to be a plurality of strip-shaped strain detection strips which are mutually spaced, the deformation quantity of the strain detection strips is favorably amplified due to the spaced existence, and the two ends of the strain detection strips are arranged to be free ends instead of being fixed on a certain annular component, so that the constraint of deformation of the strain detection strips due to the existence of the annular component is avoided, and the magnetic permeability change sensitivity of the strain detection unit under the action of torque is further improved.
Drawings
Fig. 1 is a schematic view of an internal structure of a torque sensor of a power-assisted bicycle disclosed in an embodiment of the present invention;
fig. 2 is a schematic structural view of a projection of a strain detection unit and a middle axle of a torque sensor of a power-assisted bicycle on a plane after being fixed in a first embodiment disclosed in the embodiment of the present invention;
fig. 3 is a schematic structural view of a projection of a strain detection unit and a middle axle of a torque sensor of a power-assisted bicycle on a plane after being fixed in a second embodiment disclosed in the embodiment of the present invention;
fig. 4 is a schematic structural view of a middle shaft provided with oblique insections disclosed in the embodiment of the present invention;
description of reference numerals: 1-middle shaft, 11-limiting ring, 12-oblique insection, 2-strain detection unit, 21-strain detection strip, 3-induction coil, 4-signal processing unit, 5-sleeve, 51-coil fixing groove, 6-shielding cover, 7-magnetic ring, 100-first bearing, 200-second bearing, 300-left dental cup and 400-right dental cup.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.
The embodiment of the utility model discloses moped torque sensor, it is shown with reference to fig. 1-2, be in including axis 1, setting epaxial strain detection unit 2, induction coil 3 and with the signal processing unit 4 that 3 electricity of induction coil are connected. The induction coil 3 is arranged along the periphery of the strain detection unit 2, the induction coil 3 is opposite to the strain detection unit 2 in position so that the induction coil 3 can detect the magnetic change of the strain detection unit 2, the induction coil 3 transmits the induced magnetic change signal to the signal processing unit 4, and the signal processing unit 4 acquires the torque on the middle shaft 1 according to the magnetic change. The strain detection unit 2 comprises a plurality of strain detection strips 21 which are uniformly coated on the outer side wall of the central shaft 1 along the circumferential direction of the central shaft 1, and two ends of each strain detection strip 21 are free ends. The plurality of strain detection strips 21 are uniformly arranged along the circumferential direction of the central axis 1 at intervals, so that deformation of each part of the strain detection strips 21 is the same when the strain detection unit 2 receives acting force of the central axis 1. The strain detection strip 21 is in a strip shape and is arranged along the outer side wall of the middle shaft 1, and the change of the magnetic permeability caused by the deformation of the strain detection strip 21 can be conveniently detected through the strip shape. In this embodiment, the strain gauge strip 21 is made of a magnetic material. The mode of coating through modern production technology sets up magnetic material on axis 1 in order to form strain detection unit 2, compares in prior art through what stick to the mode of foil gage at axis 1 its more firm, has avoided the drop that detection unit appears in long-time use, makes detection unit 2 and axis 1's combination more firm, has improved torque sensor torque detection's reliability and stability.
In addition, in another embodiment, as shown in fig. 4, a plurality of inclined insections 12 arranged along the circumferential direction of the central shaft 1 are arranged on the outer side wall of the central shaft 1, the strain detection strip 21 is coated on the inclined insections 12 through the existing production process, and the vertical cross section of each inclined insection 12 is in a triangular, rectangular, trapezoidal or involute tooth shape.
The both ends of axis 1 are provided with respectively and are used for dismantling the crank installation department of being connected with the crank of bicycle, and the pedal installation of bicycle is fixed to the crank, drives axis 1's rotation through the pedal at the in-process of riding. Meanwhile, the middle shaft 1 is connected to a chain wheel, and the pedaling force is transmitted to the rear wheel through the matching of the chain wheel and a chain. When the bicycle is pedaled in the process of riding the power-assisted bicycle, the central shaft 1 is subjected to circumferential torque, and the torsional force torque drives the strain detection strip 21 to deform, so that the magnetic conductivity of the strain detection strip 21 changes, the magnetic field around the induction coil 3 changes, and the induced electromotive force of the induction coil 3 changes. The signal processing unit 4 can obtain the magnitude of the torque applied to the central shaft 1 according to the change of the induced electromotive force.
The utility model discloses set up detecting element 2 into a plurality of strain detection strip 21 mutual intervals that are strip, the alternate existence also is favorable to enlargiing the deformation volume of strain detection strip 21 to make the both ends of strain detection strip 21 set up to the free end and not fix on certain annular part, avoided the constraint of the existence of annular part to strain detection strip 21 deformation, thereby further improve strain detection element 2's magnetic permeability change sensitivity under the moment of torsion effect.
In this embodiment, two free ends of two adjacent strain detection bars 21 are spaced from each other along the circumferential direction of the central shaft 1. The ends of all the strain detection strips 21 on the same side are arranged along the circumferential direction of the central shaft. Specifically, the strain detection bar 21 may be provided to have a parallelogram structure. One free end of the strain detection strip 21 extends to the position of the limit ring 11 of the middle shaft 1.
Preferably, as shown in fig. 2 or 3, a projection of the strain detection bar 21 on the axial section of the central axis 1 is oblique to the extending direction of the central axis 1 by 45 °. The arrangement of the structure is that the strain detection strip 21 is arranged at the position where the deformation of the middle shaft 1 is maximum under the action of the torque, so that when the middle shaft 1 is twisted by the torque, the deformation amount generated by the strain detection strip 21 is maximum, the magnetic permeability change sensitivity of the surface of the strain detection unit 2 under the action of the torque can be improved, and the optimal detection result is realized. Of course, the intersection angle between the projection of the strain detection bar 21 on the axial cross section of the central axis 1 and the extending direction of the central axis 1 may also be set to be other angles, or the extension direction of the strain detection bar 21 may also be parallel to the extending direction of the central axis 1, which is not further limited herein, and the strain detection bar 21 may be set as long as the magnetic permeability can be changed under the effect of the torque.
In order to further improve the sensitivity of the strain detecting elements 2 to changes in magnetic permeability under torque, as shown in fig. 2 and 3, two strain detecting elements 2 are provided, and a gap is provided between the two strain detecting elements 2. The extension directions of the strain detection bars 21 on the two strain detection units 2 are not the same. Specifically, the projections of the strain detection strips 21 on the two strain detection units 2 on the axial section of the central shaft 1 are perpendicular to each other, and the strain detection strips 21 on the two strain detection units 2 are symmetrically arranged relative to the gap. In the first embodiment, as shown in fig. 2, the inclination directions of the two strain detection bars 21 are directed in directions away from each other, forming a shape similar to a herringbone structure. In the second embodiment, as shown in fig. 3, the two strain detection bars 21 are inclined to point to one side of the position where they are located with respect to each other to form a shape similar to a V-shaped structure. When the central shaft 1 is subjected to circumferential torsional force, the strain detection strips 21 on the two strain detection units 2 deform in opposite directions, so that the induction coil 3 can acquire two magnetic permeability change data, and the two magnetic permeability change data can be verified mutually, so that the accuracy of the data is ensured, and the magnetic permeability change sensitivity of the surface of the strain detection unit 2 under the action of torque is improved.
The torque sensor of the power-assisted bicycle further comprises a sleeve 5, wherein the sleeve 5 is sleeved on the outer side of the middle shaft 1, and a coil fixing groove 51 for installing and fixing the induction coil 3 is formed in the sleeve 5; the signal processing unit 4 is fixed to the casing 5. The coil fixing groove 51 is located opposite to the strain detecting unit 2. The coil fixing grooves 51 are provided in plural according to the number of the induction coils 3. In the present embodiment, two strain detection units 2 are provided, and therefore the number of coil fixing grooves 51 is two. In addition, the sleeve 5 is provided with a circuit board fixing slot for mounting and fixing a circuit board, and the signal processing unit 4 in this embodiment is arranged on the circuit board.
Further, in order to improve the magnetic interference resistance of the induction coil 3, the torque sensor of the moped further comprises a shielding cover 6, the shielding cover 6 is sleeved on the outer side of the sleeve 5, and the shielding cover 6 is opposite to the induction coil 3. The shield case 6 has a cylindrical shape in the present embodiment and is made of an electromagnetic shield material. The induction coil 3 is covered by the shielding case 6 at least, the shielding case 6 plays a role of magnetic shielding for the induction coil 3, the anti-magnetic interference capability of the induction coil 3 can be improved, and the induction coil can be prevented from being damaged mechanically.
The application also discloses a power-assisted bicycle, which comprises the bicycle torque sensor, a magnetic ring 7 sleeved on the middle shaft 1, a Hall sensor arranged corresponding to the magnetic ring 7 to detect the rotating speed of the middle shaft 1, a first bearing 100 and a second bearing 200 respectively sleeved on the middle shaft 1, a left tooth bowl 300 sleeved on the first bearing 100 and a right tooth bowl 400 sleeved on the second bearing 200, wherein the outer side walls of the left tooth bowl 300 and the right tooth bowl 400 are respectively provided with an external thread for connecting and fixing with a five-way connector; the Hall sensor is arranged on the periphery of the magnetic ring 7 and is electrically connected with the signal processing unit 4. And the signal processing unit 4 is connected with a corresponding electric power communication line to realize electric power and signal transmission between the torque sensor and other electric appliance parts of the power-assisted bicycle.
The first bearing 100 and the second bearing 200 are arranged at two sides of the sleeve 5 at a distance, and two ends of the sleeve 5 respectively abut against the outer ring of the first bearing 100 and the outer ring of the second bearing 200. The sleeve 5 is arranged to be clamped between the first bearing 100 and the second bearing 200.
Both ends of the shield cover 6 respectively abut against the outer ring of the first bearing 100 and the outer ring of the second bearing 200, and the shield cover 6 is fixed by the first bearing 100 and the second bearing 200 being sandwiched therebetween. The inner ring of the first bearing 100 is in interference fit with the middle shaft 1, and the outer ring of the first bearing 100 is in clearance fit with the inner side wall of the left tooth bowl 300. The inner ring of the second bearing 200 is matched with the middle shaft 1, and the outer ring of the second bearing 200 is in clearance fit with the inner side wall of the right tooth bowl 300.
In this embodiment, the hall sensor is a speed sensing hall sensor, which can be fixedly mounted on the sleeve 5 for sensing the magnetic field of the magnetic ring 7. The magnetic ring 7 is connected and fixed with the middle shaft 1 through an adhesive. When the middle shaft 1 drives the magnetic ring 7 to rotate around the axis of the middle shaft 1, the magnetic field generated by the magnetic ring 7 at the periphery of the middle shaft changes, the Hall sensor senses the signal of the magnetic field change of the magnetic ring 7 and transmits the sensed speed change signal to the signal processing unit 4, and the signal processing unit 4 converts the received speed change signal into a corresponding electric signal. The rotation speed of the middle shaft 1 is indirectly detected through the matching of the magnetic ring 7 and the Hall sensor, and more parameters are provided for controlling the power-assisted bicycle.
The structure, features and effects of the present invention have been described in detail above according to the embodiment shown in the drawings, and the above description is only the preferred embodiment of the present invention, but the present invention is not limited to the implementation scope shown in the drawings, and all changes made according to the idea of the present invention or equivalent embodiments modified to the same changes should be considered within the protection scope of the present invention when not exceeding the spirit covered by the description and drawings.
Claims (10)
1. A torque sensor of a power-assisted bicycle comprises a middle shaft, a strain detection unit arranged on the middle shaft, an induction coil and a signal processing unit electrically connected with the induction coil; the induction coil is arranged along the periphery of the strain detection unit; the method is characterized in that: the strain detection unit comprises a plurality of strain detection strips which are uniformly coated on the outer side wall of the middle shaft along the circumferential direction of the middle shaft, and the free ends of two ends of every two adjacent strain detection strips are mutually spaced along the circumferential direction of the middle shaft.
2. A bicycle-assisted torque sensor as claimed in claim 1, wherein: the strain detection device is characterized in that a plurality of oblique insections which are distributed along the circumferential direction of the middle shaft are arranged on the outer side wall of the middle shaft, and the strain detection strips are coated on the oblique insections.
3. A bicycle-assisted torque sensor as claimed in claim 1, wherein: the strain detection strip is of a parallelogram structure.
4. A bicycle-assisted torque sensor as claimed in claim 1, wherein: the projection of the strain detection strip on the axial section of the central axis is oblique at 45 degrees with the extension direction of the central axis.
5. A bicycle-assisted torque sensor as claimed in claim 1, wherein: the strain detection units are arranged in two numbers, and a gap is arranged between the two strain detection units.
6. A bicycle-assisted torque sensor according to claim 5, wherein: the extension directions of the strain detection strips on the two strain detection units are different.
7. A bicycle-assisted torque sensor according to claim 6, wherein: the projections of the strain detection strips on the two strain detection units on the axial section of the middle shaft are mutually vertical.
8. A bicycle-assisted torque sensor as claimed in claim 1, wherein: the torque sensor of the power-assisted bicycle further comprises a sleeve, the sleeve is sleeved on the outer side of the middle shaft, and a coil fixing groove for installing and fixing the induction coil is formed in the sleeve; the signal processing unit is fixed on the sleeve.
9. A bicycle-assisted torque sensor as claimed in claim 8, wherein: the torque sensor of the power-assisted bicycle further comprises a shielding cover, and the shielding cover is sleeved on the outer side of the sleeve.
10. A power-assisted bicycle is characterized in that: the automatic vehicle torque sensor as claimed in any one of claims 1 to 8, comprising a magnetic ring sleeved on the central shaft, a hall sensor disposed corresponding to the magnetic ring for detecting the rotation speed of the central shaft, a first bearing and a second bearing respectively sleeved on the central shaft, a left tooth bowl sleeved on the first bearing, and a right tooth bowl sleeved on the second bearing, wherein outer side walls of the left tooth bowl and the right tooth bowl are respectively provided with an external thread for connecting and fixing with a five-way connector; the Hall sensor is arranged on the periphery of the magnetic ring and is electrically connected with the signal processing unit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921663233.4U CN210653525U (en) | 2019-09-30 | 2019-09-30 | Power-assisted bicycle torque sensor and power-assisted bicycle |
| PCT/CN2020/095091 WO2021063019A1 (en) | 2019-09-30 | 2020-06-09 | Torque sensor for power-assisted bicycle, and power-assisted bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921663233.4U CN210653525U (en) | 2019-09-30 | 2019-09-30 | Power-assisted bicycle torque sensor and power-assisted bicycle |
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| Publication Number | Publication Date |
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| CN210653525U true CN210653525U (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921663233.4U Active CN210653525U (en) | 2019-09-30 | 2019-09-30 | Power-assisted bicycle torque sensor and power-assisted bicycle |
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| Country | Link |
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| CN (1) | CN210653525U (en) |
| WO (1) | WO2021063019A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021063019A1 (en) * | 2019-09-30 | 2021-04-08 | 昆山朗德森机电科技有限公司 | Torque sensor for power-assisted bicycle, and power-assisted bicycle |
| CN113306665A (en) * | 2021-06-08 | 2021-08-27 | 范文睿 | Magnetic power-assisted rotating shaft driver |
| WO2022011831A1 (en) * | 2020-07-17 | 2022-01-20 | 珠海市钧兴机电有限公司 | Magnetic flux type torsion sensor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN207141295U (en) * | 2017-05-05 | 2018-03-27 | 捷安特电动车（昆山）有限公司 | A kind of device for measuring axis double-side torque, position angle, rotating speed and power |
| CN108791681A (en) * | 2017-05-05 | 2018-11-13 | 捷安特电动车（昆山）有限公司 | A kind of device measuring axis double-side torque, position angle, rotating speed and power |
| CN108516042B (en) * | 2018-05-07 | 2020-05-12 | 重庆三叶花科技有限公司 | Power output control system of electric bicycle |
| CN209356099U (en) * | 2018-12-18 | 2019-09-06 | 昆山攀登电子科技有限公司 | A kind of bilateral speed of torque sensing device of electric bicycle |
| CN210653525U (en) * | 2019-09-30 | 2020-06-02 | 昆山朗德森机电科技有限公司 | Power-assisted bicycle torque sensor and power-assisted bicycle |
-
2019
- 2019-09-30 CN CN201921663233.4U patent/CN210653525U/en active Active
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2020
- 2020-06-09 WO PCT/CN2020/095091 patent/WO2021063019A1/en active Application Filing
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021063019A1 (en) * | 2019-09-30 | 2021-04-08 | 昆山朗德森机电科技有限公司 | Torque sensor for power-assisted bicycle, and power-assisted bicycle |
| WO2022011831A1 (en) * | 2020-07-17 | 2022-01-20 | 珠海市钧兴机电有限公司 | Magnetic flux type torsion sensor |
| CN113306665A (en) * | 2021-06-08 | 2021-08-27 | 范文睿 | Magnetic power-assisted rotating shaft driver |
| CN113306665B (en) * | 2021-06-08 | 2023-04-14 | 范文睿 | Magnetic power-assisted rotating shaft driver |
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| Publication number | Publication date |
|---|---|
| WO2021063019A1 (en) | 2021-04-08 |
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Address after: Building 9, No. 99 Huasheng South Road, Zhoushi Town, Kunshan City, Jiangsu Province 215314 Patentee after: KUN SHAN LANG DE SEN TECHNOLOGY Co.,Ltd. Country or region after: China Address before: 21 Chaoying East Road, Zhoushi Town, Kunshan City, Suzhou City, Jiangsu Province Patentee before: KUN SHAN LANG DE SEN TECHNOLOGY Co.,Ltd. Country or region before: China |