CN115790929A - Electric motor car axis moment sensing system - Google Patents
Electric motor car axis moment sensing system Download PDFInfo
- Publication number
- CN115790929A CN115790929A CN202211511784.5A CN202211511784A CN115790929A CN 115790929 A CN115790929 A CN 115790929A CN 202211511784 A CN202211511784 A CN 202211511784A CN 115790929 A CN115790929 A CN 115790929A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- limiting
- torque
- ball nut
- middle shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 51
- 238000012545 processing Methods 0.000 claims description 27
- 238000001514 detection method Methods 0.000 claims description 12
- 238000010030 laminating Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 description 14
- 239000011888 foil Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000000956 alloy Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000002337 anti-port Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Abstract
The invention belongs to the technical field of middle shaft transmission, and particularly relates to a middle shaft torque sensing system of an electric vehicle, which comprises a middle shaft, wherein the outer end of the middle shaft is connected with a coil spring, the outer end of the coil spring is connected with a first limiting device, the right side of the first limiting device is connected with a torque sleeve, the right side of the torque sleeve is connected with a transmission sleeve, the first limiting device comprises a limiting sleeve, the left side of the limiting sleeve is provided with a limiting plate, a ball nut is movably arranged in the inner cavity of the limiting sleeve, the limiting plate is positioned on the left side of the ball nut, the outer side of the ball nut is provided with a guide groove, a guide strip matched with the guide groove is arranged in the inner cavity of the limiting sleeve, and the middle shaft comprises a ball screw matched with the ball nut; the torsion is transmitted by the coil spring, and the coil spring can buffer, so that the moment sleeve can be prevented from being subjected to overlarge torsion instantly.
Description
Technical Field
The invention relates to the technical field of middle shaft transmission, in particular to a middle shaft torque sensing system of an electric vehicle.
Background
The electric power-assisted bicycle does not automatically complete the power-assisted acceleration process through the cooperation of the torque sensor and the motor controller, namely, the power-assisted bicycle collects running parameters through the sensor, so that whether a rider needs motor assistance and how much power assistance is needed or not is judged, and the physical strength of the rider is saved. The electric power-assisted bicycle is an environment-friendly and energy-saving vehicle, and in recent years, with the enhancement of environmental awareness, the sales volume of the electric power-assisted bicycle is also increased year by year. And the high stability and the high sensitivity of the sensor in the electric power-assisted bicycle determine the riding experience of the electric power-assisted bicycle.
Most of the sensors used for the electric power-assisted bicycle at present are Hall speed type sensors and inverse magnetostrictive effect type torque type sensors; the Hall speed type sensor is used for measuring the rotating speed of a middle shaft of the electric power-assisted bicycle, and the torque type sensor is used for measuring the output torque of the middle shaft of the electric power-assisted bicycle; when the inverse magnetostrictive effect type torque sensor is used, the magnetic conductive alloy sheets are required to be bonded with the middle shaft, a seam exists between the bonded magnetic conductive alloy sheets and the middle shaft, and the torque applied to the seam of the magnetic conductive alloy sheets is not uniform, so that the detection signal is unstable; in addition, when the middle shaft is installed, extremely strict requirements are also met, especially no gap can be formed between the middle shaft and the magnetic conductive alloy sheet in the axial direction, otherwise, the zero point of the sensor and the test data can be greatly drifted; therefore, a resistance strain type torque sensor is needed to replace the conventional inverse magnetostrictive effect type torque sensor, so as to improve the stability of measurement and the convenience of installation.
Disclosure of Invention
The invention aims to provide a middle shaft torque sensing system of an electric vehicle, which aims to solve the problem that the existing electric power-assisted bicycle sensor in the background technology needs to use an inverse magnetostrictive effect type torque sensor.
In order to achieve the purpose, the invention provides the following technical scheme: a middle shaft torque sensing system of an electric vehicle comprises a middle shaft, wherein the outer end of the middle shaft is connected with a coil spring, the outer end of the coil spring is connected with a first limiting device, the right side of the first limiting device is connected with a torque sleeve, the right side of the torque sleeve is connected with a transmission sleeve, the outer sides of the transmission sleeve and the first limiting device are movably connected with threaded fixing sleeves, and the outer side of the torque sleeve is provided with a detection device;
the first limiting device comprises a limiting sleeve, a limiting plate is arranged on the left side of the limiting sleeve, a ball nut is movably arranged in an inner cavity of the limiting sleeve, the limiting plate is located on the left side of the ball nut, a guide groove is formed in the outer side of the ball nut, a guide strip matched with the guide groove is arranged in the inner cavity of the limiting sleeve, and the middle shaft comprises a ball screw matched with the ball nut;
both sides be connected with the shield cover between the fixed cover of screw thread, detection device includes multistage magnetic ring and high accuracy resistance foil gage, the high accuracy resistance foil gage is installed in the telescopic outside of moment, the inboard at the shield cover is installed to multistage magnetic ring.
Preferably, detection device still includes measuring circuit subassembly, measuring terminal transmission coil, processing circuit and external pencil, measuring circuit subassembly and measuring terminal transmission coil are installed in the telescopic outside of moment, processing terminal transmission coil and processing circuit install the inboard at the shield cover, high accuracy resistance foil gage passes through the wire and is connected with the measuring circuit subassembly, the measuring circuit subassembly passes through the wire and is connected with measuring terminal transmission coil, measuring terminal transmission coil is corresponding with processing terminal transmission coil, processing terminal transmission coil and external pencil are connected with processing circuit through the wire respectively, processing circuit and measuring circuit subassembly wireless connection, the shield cover is stretched out to the other end of external pencil.
Preferably, the inner cavity of the limiting sleeve is internally provided with two limiting rings, the number of the limiting rings is two, and the coil spring is positioned between the two limiting rings.
Preferably, the outer side of the middle shaft is provided with a limiting baffle plate, and the limiting baffle plate is positioned on the right side of the ball nut.
Preferably, be connected with stop device No. two between torque sleeve and the transmission sleeve, stop device No. two also includes stop collar, ball nut, gib block and guide way, no. two stop device's the inner chamber left and right sides all is provided with the spacing collar, ball nut is located between the spacing collar of both sides.
Preferably, the outer sides of the thread fixing sleeves on the two sides are provided with mounting tool openings.
Preferably, the left side right side of the outer wall of the thread fixing sleeve is provided with an external thread, and the thread fixing sleeve is connected with the shielding case through the external thread.
Preferably, the left side the right side of the thread fixing sleeve is provided with a corrugated gasket, and the right end of the corrugated gasket is attached to the shielding case.
Compared with the prior art, the invention has the beneficial effects that:
1) The torque is transmitted to the torque sleeve through the middle shaft by the pedal, the torque sleeve transmits the torque to the chain wheel through the transmission sleeve to drive the electric power-assisted bicycle to rotate, and meanwhile, the high-precision resistance strain gauge on the torque sleeve deforms to measure the torque force borne by the transmission sleeve;
2) The micro-deformation of the torque sleeve is measured through a high-precision resistance strain gauge, the high-precision resistance strain gauge is connected with a measuring circuit assembly, a measuring end transmission coil is connected to the measuring circuit assembly and used for realizing transmission of a measuring end data link, and an external wire harness is arranged on a processing circuit to realize information exchange between a resistance strain type torque sensor and a signal control end of a torque transmission mechanism;
3) The torsion is transmitted by the coil spring, and the coil spring can buffer, so that the moment sleeve can be prevented from being subjected to overlarge torsion instantly.
Drawings
FIG. 1 is a front view cross-sectional structural schematic of the present invention;
FIG. 2 is a schematic cross-sectional view of a first position limiting device according to the present invention;
FIG. 3 is a schematic sectional view of a top view of the detecting device of the present invention;
FIG. 4 is a schematic sectional view of a top view of a second position limiting device of the present invention;
FIG. 5 is a schematic view of the thread-fixing sleeve according to the present invention;
FIG. 6 is a schematic top view of the present invention.
In the figure: the device comprises a central shaft 1, a transmission sleeve 2, a thread fixing sleeve 3, a shielding cover 4, a coil spring 5, a torque sleeve 6, a detection device 7, a measurement circuit assembly 71, a measurement end transmission coil 72, a processing end transmission coil 73, a multistage magnetic ring 74, a high-precision resistance strain gauge 75, a processing circuit 76, an external wiring harness 77, a limiting device 8, a limiting sleeve 81, a ball nut 82, a guide strip 83, a guide groove 84, a limiting device 9 II, a mounting tool opening 10, an external thread 11 and a corrugated gasket 12.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Example (b):
referring to fig. 1-6, the present invention provides a technical solution: a torque sensing system of a middle shaft of an electric vehicle comprises a middle shaft 1, wherein the outer end of the middle shaft 1 is connected with a coil spring 5, the outer end of the coil spring 5 is connected with a limiting device 8, the limiting device 8 is used for limiting the contraction force of the coil spring 5, further the coil spring 5 is prevented from being damaged due to overlarge torsion, the coil spring 5 is used for buffering, when the middle shaft 1 is subjected to the overlarge torsion, the torsion received by the limiting device 8 can be slowly increased through the buffering of the coil spring 5, further the torsion received by the torque sleeve 6 is prevented from being rapidly increased, further the torque sleeve 6 is protected, the right side of the limiting device 8 is connected with a torque sleeve 6, the right side of the torque sleeve 6 is connected with a transmission sleeve 2, the limiting device 8 and the transmission sleeve 2 are further connected with the middle shaft 1 through bearings, the outer sides of the transmission sleeve 2 and the limiting device 8 are both movably connected with a thread fixing sleeve 3, the thread fixing sleeve 3 is used for being connected with a five-way pipe of the electric power-assisted bicycle, the outer sides of the transmission sleeve 2 and the limiting device 8 are both connected with the thread fixing sleeve 3 through bearings, the torque sleeve 7 for detecting the rotating speed of the chain wheel of the electric power-assisted bicycle, and the transmission sleeve 2 are arranged on the detection device for detecting the rotating speed detection;
the first limiting device 8 comprises a limiting sleeve 81, the limiting sleeve 81 is located on an outer middle shaft 1, a corresponding annular limiting strip is arranged on the outer side of the middle shaft 1, the limiting sleeve 81 is limited through the annular limiting strip, the limiting sleeve 81 can only rotate and cannot move in the axial direction, a ball nut 82 is movably arranged in an inner cavity of the limiting sleeve 81, a limiting plate is arranged on the left side of the limiting sleeve 81 and is used for limiting the left movement distance of the ball nut 82, after the left side of the ball nut 82 is attached to the limiting plate, the ball nut 82 moves to the left limit, the ball nut 82 cannot continue to move to the left at the moment, namely the ball nut 82 rotates, the limiting sleeve 81 is inevitably driven to rotate, the rotating number of turns of the ball nut 82 is limited, the coil spring 5 is protected, because the middle shaft only rotates in one direction during riding of the electric power-assisted bicycle, the test of reverse torsion is not required to be considered, a guide groove 84 is formed in the outer side of the ball nut 82, a guide strip 83 matched with the guide groove 84 is arranged in the inner cavity of the limiting sleeve 81, the ball nut 1 comprises a ball nut 83 matched with the ball nut 82, and the ball nut 82 can not rotate linearly when the ball nut 82 rotates, the ball nut 82 and can rotate to move linearly;
be connected with shield cover 4 between the fixed cover 3 of both sides screw thread, detection device 7 includes multistage magnetic ring 74 and high accuracy resistance foil gage 75, high accuracy resistance foil gage 75 is installed in the outside of moment sleeve 6, moment sleeve 6 is when receiving torsion, can take place deformation, and then drive high accuracy resistance foil gage 75 and carry out deformation, high accuracy resistance foil gage 75 measures the torsion that receives through deformation, the inboard at shield cover 4 is installed to multistage magnetic ring 74, multistage magnetic ring 74 is as hall sensor's partly, hall sensor's another part also is located the outside that is used for moment sleeve 6.
The detection device 7 further comprises a measurement circuit assembly 71, a measurement end transmission coil 72, a processing end transmission coil 73, a processing circuit 76 and an external wiring harness 77, the measurement circuit assembly 71 and the measurement end transmission coil 72 are mounted on the outer side of the torque sleeve 6, the processing end transmission coil 73 and the processing circuit 76 are mounted on the inner side of the shield cover 4, a power supply of the electric power-assisted bicycle is led into the processing circuit 76 through the external wiring harness 77, the processing circuit 76 transmits power to the processing end transmission coil 73 through a conducting wire, the processing end transmission coil 73 transmits power to the measurement end transmission coil 72 in a wireless transmission mode, the measurement end transmission coil 72 transmits power to the measurement end transmission coil 72, the measurement end transmission coil 72 transmits power to the high-precision resistance strain gauge 75, the high-precision resistance strain gauge 75 requires less power when in use, the power can be satisfied in a wireless transmission mode, in addition, when the high-precision resistance strain gauge 75 deforms, resistance changes occur, resistance changes are output to the measurement circuit assembly 71, the hall sensor also transmits measured speed signals to the measurement circuit assembly 71, the measurement circuit assembly 71 converts the signals into digital signals, the external signal are transmitted to the external wiring harness 76, and then the external signal is transmitted to the external wiring harness 77, and then the processing circuit 76.
Be provided with spacing ring 85 in the inner chamber of stop collar 81, the quantity of spacing ring 85 is two sets of, coil spring 5 is located between two sets of spacing rings 85, stabilize coil spring 5 through spacing ring 85, axis 1's the outside is provided with limit baffle, limit baffle is located ball nut 82's right side, when ball nut 82 is located the right limit, ball nut 82 and limit baffle laminating, prevent ball nut 82 through limit baffle and move to the right, like this when the personnel of riding reverse rotation axis 1, ball nut 82 can directly drive stop device 8 and carry out the antiport because of unable continuation right side shift, in addition, a set of spacing ring 85 includes two ring template, be connected through the bearing between stop collar 81 and the limit baffle, the bearing is located between two ring template.
Be connected with stop device 9 No. two between torque sleeve 6 and the transmission sleeve 2, avoid torque sleeve 6 to appear damaging because of the torsion that receives is too big, no. two stop device 9 also includes stop collar 81, ball nut 82, gib block 83 and guide way 84, no. two stop device 9's the inner chamber left and right sides all is provided with the spacing collar, ball nut 82 is located between the spacing collar of both sides, no. two stop device 9 are used for protecting torque sleeve 6, no. two stop device 9 in ball nut 82's the effect is the same with a stop device 8 in ball nut 82's the effect, both sides spacing collar is used for limiting the limit that moves about ball nut 82.
The outer sides of the thread fixing sleeves 3 on the two sides are provided with mounting tool openings 10, and the mounting tool openings 10 are used for assisting in mounting the thread fixing sleeves 3.
The right side of the fixed cover 3 outer walls of left side screw thread is provided with external screw thread 11, the fixed cover 3 of screw thread is connected with shield cover 4 through external screw thread 11, the fixed cover 3 of right side screw thread links firmly with shield cover 4, the right side of the fixed cover 3 of left side screw thread is provided with ripple gasket 12, and then to axis 1, moment sleeve 6 reaches and fixes a position, guarantee measurand that speed signal and torsion signal can be accurate, the right-hand member and the shield cover 4 laminating of ripple gasket 12, can adjust the interval between two fixed covers 3 of screw thread through ripple gasket 12, a machining error for compensating five-way pipe on length direction.
The working principle is as follows: the torque force applied by the riding personnel can be transmitted to the middle shaft 1 to drive the middle shaft 1 to rotate, the middle shaft 1 drives the limiting sleeve 81 to rotate through the coil spring 5, the rotating speed of the limiting sleeve 81 can be slowly increased due to the fact that the torque force applied by the coil spring 5 can be slowly increased, at the moment, the limiting sleeve 81 and the middle shaft 1 rotate relatively, and the ball nut 82 starts to move left;
stop collar 81 area power moment sleeve 6 rotates, and moment sleeve 6 drives transmission sleeve 2 through No. two stop device 9 and rotates, because moment sleeve 6 can take place micro-deformation in rotating, and the deformation of moment sleeve 6 can drive high accuracy resistance strain gauge 75 and appear deformation, and high accuracy resistance strain gauge 75 passes through deformation output resistance change, and then measures output torque this moment through resistance change.
While there have been shown and described the fundamental principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides an electric motor car axis moment sensing system, includes axis (1), its characterized in that: the outer end of the middle shaft (1) is connected with a coil spring (5), the outer end of the coil spring (5) is connected with a first limiting device (8), the right side of the first limiting device (8) is connected with a torque sleeve (6), the right side of the torque sleeve (6) is connected with a transmission sleeve (2), the outer sides of the transmission sleeve (2) and the first limiting device (8) are both movably connected with a threaded fixing sleeve (3), and the outer side of the torque sleeve (6) is provided with a detection device (7);
the first limiting device (8) comprises a limiting sleeve (81), a limiting plate is arranged on the left side of the limiting sleeve (81), a ball nut (82) is movably arranged in an inner cavity of the limiting sleeve (81), the limiting plate is located on the left side of the ball nut (82), a guide groove (84) is formed in the outer side of the ball nut (82), a guide strip (83) matched with the guide groove (84) is arranged in the inner cavity of the limiting sleeve (81), and the middle shaft (1) comprises a ball screw matched with the ball nut (82);
both sides be connected with shield cover (4) between screw thread fixed cover (3), detection device (7) include multistage magnetic ring (74) and high accuracy resistance strain gauge (75), the outside at moment sleeve (6) is installed in high accuracy resistance strain gauge (75), the inboard at shield cover (4) is installed in multistage magnetic ring (74).
2. The system of claim 1, wherein the torque sensor comprises: the detection device (7) further comprises a measuring circuit assembly (71), a measuring end transmission coil (72), a processing end transmission coil (73), a processing circuit (76) and an external wiring harness (77), wherein the measuring circuit assembly (71) and the measuring end transmission coil (72) are installed on the outer side of the torque sleeve (6), the processing end transmission coil (73) and the processing circuit (76) are installed on the inner side of the shielding case (4), the high-precision resistance strain gauge (75) is connected with the measuring circuit assembly (71) through a wire, the measuring circuit assembly (71) is connected with the measuring end transmission coil (72) through a wire, the measuring end transmission coil (72) corresponds to the processing end transmission coil (73), the processing end transmission coil (73) and the external wiring harness (77) are respectively connected with the processing circuit (76) through wires, the processing circuit (76) is wirelessly connected with the measuring circuit assembly (71), and the other end of the external wiring harness (77) extends out of the shielding case (4).
3. The system of claim 1, wherein the torque sensing system comprises: be provided with spacing ring (85) in the inner chamber of stop collar (81), the quantity of spacing ring (85) is two sets of, coil spring (5) are located between two sets of spacing ring (85).
4. The system of claim 1, wherein the torque sensing system comprises: the outer side of the middle shaft (1) is provided with a limiting baffle plate, and the limiting baffle plate is positioned on the right side of the ball nut (82).
5. The system of claim 1, wherein the torque sensing system comprises: be connected with No. two stop device (9) between torque sleeve (6) and transmission sleeve (2), no. two stop device (9) also include stop collar (81), ball nut (82), gib block (83) and guide way (84), the inner chamber left and right sides of No. two stop device (9) all is provided with the spacing collar, ball nut (82) are located between the both sides spacing collar.
6. The system of claim 1, wherein the torque sensor comprises: the outer sides of the thread fixing sleeves (3) on the two sides are provided with mounting tool openings (10).
7. The system of claim 1, wherein the torque sensor comprises: the left side the right side of fixed cover of screw thread (3) outer wall is provided with external screw thread (11), fixed cover of screw thread (3) is connected with shield cover (4) through external screw thread (11).
8. The system of claim 1, wherein the torque sensing system comprises: the left side the right side of fixed cover of screw thread (3) is provided with ripple gasket (12), the right-hand member and the shield cover (4) laminating of ripple gasket (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211511784.5A CN115790929A (en) | 2022-11-29 | 2022-11-29 | Electric motor car axis moment sensing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211511784.5A CN115790929A (en) | 2022-11-29 | 2022-11-29 | Electric motor car axis moment sensing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115790929A true CN115790929A (en) | 2023-03-14 |
Family
ID=85443083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211511784.5A Withdrawn CN115790929A (en) | 2022-11-29 | 2022-11-29 | Electric motor car axis moment sensing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115790929A (en) |
-
2022
- 2022-11-29 CN CN202211511784.5A patent/CN115790929A/en not_active Withdrawn
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109366480A (en) | A kind of dynamoelectric controlled integrated joint of robot mould group of high integration | |
| CN103171733A (en) | Central-shaft torque sensing device for electric bicycle | |
| CN102190059A (en) | Power-assisted sensing system of electric bicycle | |
| CN107957308A (en) | Flange type torque sensor | |
| CN203427881U (en) | Turn angle detection device used for measuring turn angle of automobile steering wheel | |
| CN111693192A (en) | Magnetic flux type torsion sensor | |
| CN103419889A (en) | Power control mechanism of electric power bicycle | |
| WO2019000730A1 (en) | Pressure measuring device | |
| CN205981501U (en) | Orce measuring device | |
| CN115790929A (en) | Electric motor car axis moment sensing system | |
| EP2682335A1 (en) | Bicycle pedaling force detection apparatus production method and apparatus made with the method thereof | |
| CN108163128A (en) | A kind of bilateral chain wheel axle torsion sensor of moped based on counter magnetostriction effect | |
| CN212275119U (en) | Magnetic flux type torsion sensor | |
| CN216301376U (en) | Chain transmission middle axle moment sensing device for electric bicycle | |
| CN111844120B (en) | Torque feedback joint | |
| CN209126909U (en) | Electrical bicycle middle shaft bilateral legpower high-precision detection device | |
| CN211452684U (en) | Flange type bending moment resistant static torque sensor | |
| CN111452083A (en) | Integrated joint type driving and controlling module with force/position detection function | |
| CN109665051B (en) | High-precision center shaft pedal force sensing device | |
| CN85203875U (en) | Dynamometer steering wheel with angular velocity measuring unit | |
| CN212486308U (en) | Outer rotor servo motor speed measurement and braking system and transverse flux motor | |
| CN113418637A (en) | Torsion sensor for electric bicycle | |
| CN111361682A (en) | Central shaft torsion detection sensing device | |
| CN220721308U (en) | Moment sensor suitable for electric bicycle | |
| CN217953738U (en) | High-sensitivity and high-accuracy center shaft torque sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20230314 |