Torque speed sensor with magnetic encoder structure

Abstract

This invention discloses a torque and speed sensor with a magnetic encoder structure, including a deformable sleeve assembly and a signal processing assembly. The deformable sleeve assembly includes a deformable sleeve, a first magnetic ring, and a second magnetic ring. The first and second magnetic rings are disposed on the deformable sleeve, which is fixed relative to the main shaft. The first magnetic ring and the annular snap-fit ​​portion are located in the same axial position, and the second magnetic ring is disposed in the middle section of the deformable sleeve. In the signal processing assembly, a signal processing bracket is positioned relative to the main shaft. The first magnetic encoder, the second magnetic encoder, and the PCB processor are fixedly disposed on the signal processing bracket. The first magnetic encoder is correspondingly disposed to the first magnetic ring, and the second magnetic encoder is correspondingly disposed to the second magnetic ring. When the deformable sleeve is subjected to torsion, the first and second magnetic rings undergo circumferential positional changes. The first and second magnetic encoders calculate the rotation angle of the magnetic rings and transmit the signal to the PCB processor. This device can simultaneously sense torque and vehicle speed, providing power to the vehicle. It has high integration and rapid signal output.

Description

Technical Field

[0001] This invention belongs to the field of electric-assisted bicycle accessories, specifically relating to a torque and speed sensor with a magnetic encoder structure. Background Technology

[0002] Electric-assist bicycles are hybrid riding devices based on traditional bicycles, equipped with a power system centered around a torque sensor. Their most distinctive feature is the use of a torque sensor to detect the rider's pedaling force. Based on the sensed force, the system interprets the rider's intentions and provides corresponding power support. The torque sensor is the core component of the electric-assist bicycle system, primarily mounted between the crank and chainring, though some models are directly mounted on the spindle. The torque sensor measures the subtle deformation signals generated by the lever arm during force transmission, determining the current pedaling torque and converting it into an electrical signal for the power system's immediate response. To capture more comprehensive riding parameters of electric bicycles, existing models typically integrate speed sensors into torque sensors, enabling the torque sensor to simultaneously sense vehicle speed. This integrated sensor is also known as a torque-speed sensor. In existing torque-speed sensors, the two sensor structures are separate. The torque sensor generally uses a magnetoelastic structure or strain gauge structure as a torque deformation sleeve, which is relatively complex and costly to manufacture. The speed sensor, on the other hand, uses a separate Hall element and magnet to generate signal pulses. Because the installation position of the torque sensor is very compact, installing two sensor structures in such a compact location is not only difficult to assemble, but also prone to interference between the structures, and makes it inconvenient to inspect a single sensor. Summary of the Invention

[0003] To address the aforementioned problems and technical requirements, this invention provides a torque and speed sensor with a magnetic encoder structure. By employing a combination of a magnetic encoder and a magnetic ring, it can simultaneously sense torque and vehicle speed information and provide power to the vehicle in a timely manner. It features high integration and rapid signal output.

[0004] The technical solution of this invention is as follows: A torque and speed sensor with a magnetic encoder structure is installed on the outside of the vehicle's main shaft. It includes a deformable sleeve assembly and a signal processing assembly. The deformable sleeve assembly includes a deformable sleeve, a first magnetic ring, and a second magnetic ring. The first and second magnetic rings are fixedly installed on the deformable sleeve at a distance from each other. The two ends of the deformable sleeve are the input and output ends of the transmission, respectively. The left end of the deformable sleeve is relatively fixed to the main shaft through an annular snap-fit ​​portion. The first magnetic ring and the annular snap-fit ​​portion are located in the same axial position. The second magnetic ring is located in the middle section of the deformable sleeve. The section between the first and second magnetic rings is the torsion generation section. A sprocket or flywheel is provided on the outer circumferential surface of the right end of the deformable sleeve. The signal processing assembly includes a signal processing bracket, a PCB processor, a first magnetic encoder, and a second magnetic encoder. The signal processing bracket is relatively positioned relative to the main shaft. The first magnetic encoder, the second magnetic encoder, and the PCB processor are all fixedly installed on the signal processing bracket. The first magnetic encoder is correspondingly arranged with the first magnetic ring, and the second magnetic encoder is correspondingly arranged with the second magnetic ring. When the deformable sleeve is subjected to torsion, the first and second magnetic rings undergo circumferential position changes. The first and second magnetic encoders calculate the two... The angle through which each magnetic ring rotates transmits the signal to the PCB processor; the main shaft is a fixed main shaft, which is installed inside the vehicle's hub drive motor. The hub drive motor includes a housing that houses the motor body and an end cover. The end cover is fixedly connected to the housing by screws. The core of the end cover is provided with a ratchet ring, through which the fixed main shaft passes. Between the ratchet ring and the fixed main shaft, from the outside to the inside, a tower base sleeve, a deformable sleeve, and a signal processing bracket are arranged sequentially; the inner wall of the tower base sleeve is clamped to the deformable sleeve by a spline, a flywheel is installed on the outer ring of the tower base sleeve, and the left end of the deformable sleeve extends out from inside the tower base sleeve. The left end of the deformable sleeve is provided with a clutch connection part corresponding to the ratchet ring. The outer periphery of the clutch connection part is provided with multiple equally spaced grooves. A tower base ratchet pawl is installed in each groove. The tower base ratchet pawl can engage with the ratchet ring to drive the ratchet ring to rotate. The ratchet ring drives the end cover and the housing to rotate simultaneously. The first magnetic ring and the second magnetic ring are both glued to the inner wall of the deformable sleeve. The first magnetic ring and the clutch connection part are installed in the same axial position. The second magnetic ring is located on the left side of the spline. The deformable sleeve and the tower base sleeve are respectively connected to the fixed main shaft through a support bearing.

[0005] In the above scheme, two magnetic rings are staggered and fitted onto the deformable sleeve. The two ends of the deformable sleeve are the input and output ends of the transmission, respectively. The deformable sleeve itself acts as the lever arm for the torsion. The deformable sleeve undergoes corresponding torsional deformation as the magnitude and direction of the input force change. The two magnetic rings fixed on the deformable sleeve also rotate synchronously. Two magnetic encoders collect the angle change between the magnetic rings and send the change to the PCB processor. The PCB processor converts the relative angle change of the magnetic rings into a digital signal and outputs it. This digital signal provides timely feedback on the magnitude of the pedaling torque signal. When the external control system receives this information, it can understand the rider's force intention based on the information and thus provide the corresponding power supply.

[0006] Furthermore, the signal processing bracket is mounted on the circumferential surface of the fixed spindle, and the first magnetic encoder and the second magnetic encoder protrude from the outer circumferential surface of the signal processing bracket, with the outer side of the first magnetic encoder facing the first magnetic ring and the outer side of the second magnetic encoder facing the second magnetic ring.

[0007] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention sets a deformable sleeve on the outside of the main shaft, and fixes two magnetic rings on the deformable sleeve. The two ends of the deformable sleeve are the force input end and the force output end, respectively. When the vehicle is propelled forward by human pedaling, the pedaling force is input from one end of the deformable sleeve. The deformable sleeve acts as a lever arm, transmitting the received force to the other end and then outputting it outward. During the force transmission process, the deformable sleeve twists, causing the two magnetic rings to rotate circumferentially accordingly. Since each magnetic ring is equipped with a magnetic encoder, the magnetic encoder can simultaneously collect the relative angle of rotation between the two magnetic rings and the rotational speed of the magnetic rings themselves. The encoder transmits information to the PCB processor, which can instantly reflect the signal of the pedal torque and the vehicle speed information. The external control system can quickly provide the corresponding power supply based on this information. Compared with the existing technology, this torque and speed sensor only uses a set of magnetic rings and magnetic encoders to obtain torque and speed information at the same time, without the need to set up two separate sensors. Therefore, this device has the advantages of high integration, high sensitivity and high resolution. Moreover, due to the simplified structure, there is no interference between the various structures in the compact installation position, which simplifies the assembly process, saves production costs and facilitates later maintenance. Attached Figure Description

[0008] Figure 1 This is an overall cross-sectional view of the torque and speed sensor embodiment one of the present invention;

[0009] Figure 2 This is an exploded view of the overall structure of the torque and speed sensor embodiment one of the present invention;

[0010] Figure 3 This is a cross-sectional view of the rotating spindle in Embodiment 1 of the torque and speed sensor of the present invention;

[0011] Figure 4 for Figure 3 Exploded view of the structure of each component;

[0012] Figure 5 This is an exploded view of the signal processing component in Embodiment 1 of the torque-speed sensor of the present invention;

[0013] Figure 6 This is a cross-sectional view of the signal processing component in Embodiment 1 of the torque-speed sensor of the present invention;

[0014] Figure 7 This is a three-dimensional structural diagram of the deformable sleeve in Embodiment 1 of the torque and speed sensor of the present invention;

[0015] Figure 8 This is a cross-sectional view of the deformable sleeve in Embodiment 1 of the torque and speed sensor of the present invention;

[0016] Figure 9 This is a cross-sectional view of the installation structure of the torque and speed sensor according to Embodiment 2 of the present invention;

[0017] Figure 10 This is a cross-sectional view of the rotating main shaft in Embodiment 2 of the torque and speed sensor of the present invention;

[0018] Figure 11 This is a cross-sectional view of the installation structure of the torque and speed sensor according to Embodiment 3 of the present invention;

[0019] Figure 12 This is an exploded view of the overall structure of the torque and speed sensor embodiment three of the present invention;

[0020] Figure 13 This is an assembly diagram of the signal processing component, clutch connection part, and tower base sleeve in Embodiment 3 of the torque and speed sensor of the present invention;

[0021] Figure 14 This is a schematic diagram of the assembly of the deformable sleeve and the tower base sleeve in Embodiment 3 of the torque and speed sensor of the present invention;

[0022] Figure 15 This is a cross-sectional view of the deformable sleeve and the tower base sleeve in Embodiment 3 of the torque and speed sensor of the present invention;

[0023] The components in the diagram are labeled as follows: rotating spindle 1, spline 11, crank 12, chainring 13, support wrist guard 14, deformable sleeve assembly 2, first magnetic ring 21, second magnetic ring 22, deformable sleeve 3, pawl 31, clutch connection 32, groove 321, tower base pawl jack 322, signal processing assembly 4, signal processing bracket 41, PCB processor 42, first magnetic encoder 43, second magnetic encoder 44, shielding cover 45, central drive motor 5, reduction gear assembly 51, chainring sleeve 52, chainring 521, hub drive motor 6, fixed spindle 60, housing 61, end cap 62, ratchet ring 63, tower base sleeve 64, spline 65, support bearing 66. Detailed Implementation

[0024] The present invention will now be further described with reference to the accompanying drawings and embodiments.

[0025] Example 1: In this example, the torque and speed sensor is installed in the bottom bracket of the frame of an electric bicycle or scooter. The following is a further description of this example with reference to the accompanying drawings.

[0026] like Figure 1-8 The diagram shown is a structural diagram of Embodiment 1. The rotating main shaft 1 passes through the bottom bracket of the vehicle frame. A torque and speed sensor with a magnetic encoder structure is set on the outside of the rotating main shaft 1. The sensor includes a deformable sleeve assembly 2 and a signal processing assembly 4. The deformable sleeve assembly 2 includes a deformable sleeve 3, a first magnetic ring 21, and a second magnetic ring 22. The first magnetic ring 21 and the second magnetic ring 22 are spaced apart and clamped on the outside of the deformable sleeve 3. To achieve a better fixing effect, the first magnetic ring 21 and the second magnetic ring 22 are glued to the deformable sleeve 3. The left end of the deformable sleeve 3 is relatively fixed to the main shaft 1 through an annular snap-fit ​​part. In this embodiment, the annular snap-fit ​​part is specifically a set of splines 11 located on the inner wall of the deformable sleeve 3 and the outer circumferential surface of the main shaft 1. The inner side of the left end of the deformable sleeve 3 is snapped and connected to the rotating main shaft 1. The connection point of the splines 11 is the power input end.

[0027] The first magnetic ring 21 and the spline 11 are located in the same axial position, that is, they are located on the outer and inner sides of the same position of the deformable sleeve 3, respectively. The second magnetic ring 22 is set in the middle section of the deformable sleeve 3. The section between the first magnetic ring 21 and the second magnetic ring 22 is the torsion generation section. A toothed disc 13 is provided on the outer circumferential surface of the right end of the deformable sleeve 3. The connection between the toothed disc 13 and the deformable sleeve 3 is the power output end. Since the first magnetic ring 21 and the spline 11 are in the same axial position, when the power is transmitted from the spline 11 to the deformable sleeve 3, the torsional force on the first magnetic ring 21 is quite limited. The first magnetic ring 21 remains stationary or only rotates slightly. The first magnetic ring 21 is approximately a fixed quantity, while the rotation angle of the second magnetic ring 22 is a variable quantity. This can avoid the high error rate caused by having two variable quantities at the same time, and make the measurement results more accurate.

[0028] The signal processing component 4 includes a signal processing bracket 41, a PCB processor 42, a first magnetic encoder 43, and a second magnetic encoder 44. A support wrist 14 is connected to the outer side of the rotating main shaft 1 via bearings. The support wrist 14 is fixed relative to the bottom bracket of the frame. The signal processing bracket 41 is fixedly connected to the support wrist 14. The inner sides of both ends of the signal processing bracket 41 are respectively supported on the deformable sleeve 3 and the outer ring of the rotating main shaft 1. The PCB processor 42 is installed in the signal processing bracket 41, and a shielding cover 45 encapsulating the PCB processor 42 is provided on the outer circumferential surface of the signal processing bracket 41. The first magnetic encoder 43 and the second magnetic encoder 44 are fixedly mounted on the signal processing bracket 41, wherein the first magnetic encoder 43 is correspondingly arranged with the first magnetic ring 21, and the second magnetic encoder 44 is correspondingly arranged with the second magnetic ring 22. When the deformable sleeve 3 is subjected to torsion, the first magnetic ring 21 and the second magnetic ring 22 undergo circumferential position changes. The first magnetic encoder 43 and the second magnetic encoder 44 calculate the angle through which the two magnetic rings have rotated and transmit the signal to the PCB processor 42.

[0029] Operating principle of Example 1: Cranks 12 are installed at the left and right ends of the main shaft 1 respectively. When the pedals on the cranks 12 are stepped on alternately by the human, the spline 11 between the main shaft 1 and the deformable sleeve 3 drives the deformable sleeve 3 to rotate circumferentially. Then, the spline (not shown in the figure) at the right end of the deformable sleeve 3 drives the chain 13 to run. The chain 13 drives the rear wheel of the vehicle to rotate through the chain, thereby driving the vehicle forward. During operation, the deformable sleeve 3 is the lever arm that transmits force. The left end of the deformable sleeve 3 engages with the main shaft 1, serving as the input end. The right end of the deformable sleeve 3 engages with the chainring 13, serving as the output end. The section of the deformable sleeve 3 located between the first magnetic ring 21 and the second magnetic ring 22 is the main torsion generation section. The first magnetic ring 21 and the second magnetic ring 22 rotate synchronously with the torsion of the deformable sleeve 3. The first magnetic encoder 43 and the second magnetic encoder 44 respectively collect the angular changes of the first magnetic ring 21 and the second magnetic ring 22, and send the changes to the PCB processor 42. The PCB processor 42 converts the collected relative angular changes into digital signals for output. This digital signal provides real-time feedback on the magnitude of the pedaling torque signal. At the same time, the magnetic encoder also collects the speed of the magnetic rings. The PCB processor 42 can simultaneously output torque digital signals and pulse speed signals. These information are transmitted to the external control system, which can then understand the rider's force intention based on the information and provide corresponding power supply.

[0030] Example 2: In this example, the torque and speed sensor is installed in the mid-drive motor 5 of the electric bicycle or assisted electric bicycle. The following is a further description of this example with reference to the accompanying drawings.

[0031] like Figure 9-10The figure shows the installation structure of the torque and speed sensor in the mid-drive motor 5 in this embodiment. The difference between this embodiment and the first embodiment is that the mid-drive motor 5 is provided with a reduction gear assembly 51, and multiple sets of pawls 31 are provided on the outer peripheral surface of the right end of the deformable sleeve 3. A toothed plate sleeve 52 is provided on the outer side of the pawl 31, and a ratchet that cooperates with the pawl 31 is provided on the inner side wall of the toothed plate sleeve 52. This position forms a ratchet-pawl clutch. The outer peripheral surface of the toothed plate sleeve 52 is simultaneously connected to the reduction gear assembly 51 and the toothed plate 521.

[0032] The operating principle of Embodiment 2: Cranks 12 are respectively installed at the left and right ends of the rotating main shaft 1. When the pedals on the cranks 12 are stepped on alternately by the operator, the rotating main shaft 1 and the deformable sleeve 3 are connected by the spline 11 to drive the deformable sleeve 3 to rotate circumferentially. The pawl 31 at the right end of the deformable sleeve 3 engages and disengages, causing the chainring sleeve 52 to rotate. The chainring sleeve 52 drives the outer chainring 521 to rotate, and the chainring 521 drives the vehicle forward through the chain. During operation, the left end of the deformable sleeve 3 is connected to the rotating main shaft 1 through the spline 11, and the left end is the power input end. The right end of the deformable sleeve engages with the toothed sleeve 52 via a pawl 31. The right end is the power output end. The deformable sleeve 3 acts as the lever arm for transmitting force. During operation, it undergoes torsional deformation. The first magnetic ring 21 and the second magnetic ring 22 rotate synchronously with the torsion of the deformable sleeve 3. The first magnetic encoder 43 and the second magnetic encoder 44 respectively collect the angular changes of the first magnetic ring 21 and the second magnetic ring 22. The amount of change is sent to the PCB processor 42, which calculates and processes the data before outputting torque and speed information.

[0033] Example 3: In this example, the torque and speed sensor is installed inside the hub drive motor 6 of the electric bicycle or electric scooter. The following is a further description of this example with reference to the accompanying drawings.

[0034] like Figure 11-15 The diagram shows the structure of Embodiment 3. In this embodiment, the fixed main shaft 60 is installed inside the wheel hub drive motor 6 of the vehicle. The wheel hub drive motor 6 includes a housing 61 that houses the motor body and an end cover 62. The motor body is a combination of a drive motor and a planetary reducer. The gear ring of the planetary reducer is installed on the annular inner wall of the housing 61. When the motor is running, it will drive the gear ring to rotate through the transmission gear, and then the housing 61 will rotate with the gear ring. The housing 61 will drive the vehicle forward through the spokes.

[0035] The end cap 62 is fixedly connected to the housing 61 by screws. The core of the end cap 62 is provided with a ratchet ring 63. The fixed spindle 60 passes through the ratchet ring 63. Between the ratchet ring 63 and the fixed spindle 60, from the outside to the inside, a tower base sleeve 64, a deformable sleeve 3, and a signal processing bracket 41 are arranged in sequence. The inner wall of the tower base sleeve 64 is tightly connected to the deformable sleeve 3 by a spline 65. A flywheel is installed on the outer ring of the tower base sleeve 64. The flywheel is connected to the chain sprocket by a chain. When the chain sprocket rotates, the flywheel rotates synchronously.

[0036] The left end of the deformable sleeve 3 extends from the tower base sleeve 64. The left end of the deformable sleeve 3 is provided with a clutch connection part 32 corresponding to the ratchet ring 63. The outer ring of the clutch connection part 32 is provided with a plurality of equally spaced grooves 321. A tower base ratchet pawl 322 is installed in each groove 321. The tower base ratchet pawl 322 can engage with the ratchet ring 63 to drive the ratchet ring 63 to rotate. The ratchet ring 63 drives the end cover 62 and the housing 61 to rotate simultaneously.

[0037] The first magnetic ring 21 and the second magnetic ring 22 are both glued to the inner wall of the deformable sleeve 3. The first magnetic ring 21 and the clutch connection part 32 are installed in the same axial position, and the second magnetic ring 22 is located on the left side of the spline 65. The deformable sleeve 3 and the tower base sleeve 64 are respectively connected to the fixed spindle 60 through a support bearing 66. The signal processing bracket 41 is fixedly installed on the circumferential surface of the fixed spindle 60. The first magnetic encoder 43 and the second magnetic encoder 44 protrude from the outer circumferential surface of the signal processing bracket 41, with the outer side of the first magnetic encoder 43 facing the first magnetic ring 21 and the outer side of the second magnetic encoder 44 facing the second magnetic ring 22.

[0038] The difference between Embodiment 3 and Embodiments 1 and 2 is that: in Embodiment 3, the right end of the deformable sleeve 3 is the power input end, the left end is the power output end, and the signal processing component 4 is located inside the deformable sleeve 3.

[0039] The operating principle of Example 3: Human pedaling drives the chainring in the middle of the frame to rotate. The chainring drives the freewheel at the rear of the frame to rotate via a chain. Since the freewheel is mounted on the outside of the freewheel base sleeve 64, it drives the freewheel base sleeve 64 to rotate. The inner wall of the freewheel base sleeve 64 is tightly connected to the deformable sleeve 3 via a spline 65; this is the power input end. The clutch connection 32 at the left end of the deformable sleeve 3 drives the ratchet ring 63 to rotate unidirectionally via the freewheel base ratchet pawl 322. The junction of the clutch connection 32 and the ratchet ring 63 is the power output end. The ratchet ring 63 is fixedly mounted on the core of the end cap 62, which is in turn fixedly connected to the housing 61. Therefore, the rotation of the freewheel base sleeve 64 drives the entire hub motor housing to rotate. The housing 61 drives the wheels through spokes, propelling the vehicle forward. During the force transmission process, the deformable sleeve 3 undergoes a slight torsional deformation. The first magnetic encoder 43 and the second magnetic encoder 44 located inside the deformable sleeve 3 respectively collect the relative angle change of the first magnetic ring 21 and the second magnetic ring 22. The PCB processor 42 calculates the torque digital signal and pulse speed signal. This information is transmitted to the external control system. The control system understands the rider's force intention based on the information and provides the corresponding power supply.

[0040] The above descriptions are merely several preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations and substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A torque speed sensor with a magnetic encoder structure, provided on the outside of a vehicle axle, characterized in that: The application relates to a signal processing device for a hub drive motor, which comprises a deformation sleeve assembly and a signal processing assembly. The deformation sleeve assembly comprises a deformation sleeve, a first magnetic ring and a second magnetic ring. The first magnetic ring and the second magnetic ring are fixedly arranged on the deformation sleeve at a distance. The deformation sleeve has a transmission input end and a transmission output end at two ends. The left end of the deformation sleeve is fixedly connected with the main shaft through an annular clamping part. The first magnetic ring and the annular clamping part are located at the same axial position. The second magnetic ring is arranged at the middle section of the deformation sleeve. The first magnetic ring and the second magnetic ring are located at a torsion generating section. The outer circumferential surface of the right end of the deformation sleeve is provided with a gear disc or a flywheel. The signal processing assembly comprises a signal processing support, a PCB processor, a first magnetic encoder and a second magnetic encoder. The signal processing support is located opposite to the main shaft. The first magnetic encoder, the second magnetic encoder and the PCB processor are fixedly arranged on the signal processing support. The first magnetic encoder is arranged opposite to the first magnetic ring, and the second magnetic encoder is arranged opposite to the second magnetic ring. When the deformation sleeve is subjected to torsion, the first magnetic ring and the second magnetic ring generate circumferential position changes. The first magnetic encoder and the second magnetic encoder measure the angle of rotation of the two magnetic rings and transmit signals to the PCB processor. The main shaft is a fixed main shaft, which is arranged in the hub drive motor of a vehicle. The hub drive motor comprises a shell for accommodating a motor body and an end cover. The end cover is fixedly connected with the shell through screws. The end cover core is provided with a ratchet ring. The fixed main shaft passes through the ratchet ring. A tower base sleeve, the deformation sleeve and the signal processing support are sequentially arranged from the outside to the inside between the ratchet ring and the fixed main shaft. The inner wall of the tower base sleeve is clamped and connected with the deformation sleeve through splines. The outer circle of the tower base sleeve is provided with a flywheel. The left end of the deformation sleeve extends from the tower base sleeve. The left end of the deformation sleeve is provided with a clutch connecting part corresponding to the ratchet ring. The outer circumferential surface of the clutch connecting part is provided with a plurality of equiangular and staggered grooves. A tower base ratchet pawl leaf spring is arranged in each groove. The tower base ratchet pawl leaf spring can be engaged with the ratchet ring to drive the ratchet ring to rotate. The ratchet ring drives the end cover and the shell to rotate simultaneously. The first magnetic ring and the second magnetic ring are both glued and arranged on the inner wall of the deformation sleeve. The first magnetic ring is arranged at the same axial position as the clutch connecting part. The second magnetic ring is located at the left side of the spline. The deformation sleeve and the tower base sleeve are connected with the fixed main shaft through a support bearing.

2. The torque speed sensor with a magnetic encoder structure according to claim 1, characterized in that: The signal processing support is arranged on the circumferential surface of the fixed main shaft. The first magnetic encoder and the second magnetic encoder are protrusively arranged on the outer circumferential surface of the signal processing support. The outer side of the first magnetic encoder faces the first magnetic ring, and the outer side of the second magnetic encoder faces the second magnetic ring.

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