A positioning device for assembling a shaded pole motor

Abstract

The positioning device for assembling the shielded motor comprises a motor bearing seat, a mounting frame, a driving swing lever, a passive rotating lever, a synchronous mechanism, a pressure head and an auxiliary adjusting mechanism. After the shielded motor is placed on the motor bearing seat, the driving swing lever can be pulled to rotate, the driving swing lever drives the passive rotating lever to rotate synchronously through the synchronous mechanism, so that the pressure head can press the iron sheet support on the top of the shielded motor, thereby facilitating the screw machine to lock the screws of the iron sheet support and the shielded motor, avoiding the deviation between the iron sheets, and improving the assembly effect. The output shaft of the shielded motor extends into the adjusting box, the adjusting box is provided with a straightening mechanism and a damping mechanism, the straightening mechanism can straighten the output shaft of the shielded motor, avoiding the jamming of the subsequent assembly transmission member, and the damping mechanism can provide damping for the output shaft of the shielded motor, so that the screw obtains a pre-tightening anti-loose torque, avoiding loosening.

Description

Technical Field

[0001] This invention relates to the field of equipment processing technology, and in particular to a positioning device for assembling a shaded-pole motor. Background Technology

[0002] Shaded-pole motors (such as the YJ58 series motors with spring-loaded shaded poles) are commonly used components in the field of micro drives. Their core components include a stator core, rotor assembly, spring-loaded shaded poles, and sheet metal brackets. The spring-loaded shaded poles are fitted onto the outside of the stator core and adapt to magnetic field adjustment requirements through elastic deformation. The sheet metal brackets need to be assembled on the front of the motor housing as a support structure for subsequent equipment connections. During assembly, the elastic restoring characteristics of the spring-loaded shaded poles can easily cause circumferential / axial offset after the motor is placed in the tooling, resulting in the sheet metal brackets not being able to accurately fit the preset mounting surface of the motor. This leads to misalignment between the bracket screw holes and the motor threaded holes, directly causing the screw-locking process to be unable to proceed smoothly. This not only reduces assembly efficiency but also easily damages the brackets or motor housing due to repeated adjustments, increasing the defect rate.

[0003] Existing solutions mostly involve manually calibrating the relative position of the motor and the bracket, or using rigid positioning fixtures of fixed dimensions. However, manual adjustment is inefficient, prone to errors, and difficult to adapt to mass production. In addition, existing fixtures do not have a pre-tightening mechanism for the iron plate bracket in the screw-locking process, which makes the bracket easy to loosen due to motor vibration after locking. They also lack a straightening and centering structure for the motor output shaft. Even a slight bend in the output shaft can cause jamming in the subsequent assembly of transmission components, directly affecting the final performance of the shaded-pole motor. Summary of the Invention

[0004] In view of this, the present invention proposes a positioning device for assembling a shaded pole motor, which can realize the rapid pressing of the iron plate support of the shaded pole motor, and provide output shaft straightening and patch support pre-tightening functions to ensure the reliability of the assembly of the shaded pole motor.

[0005] The technical solution of this invention is implemented as follows: A positioning device for assembling a shaded-pole motor includes a motor support, a mounting bracket, an active rocker arm, a passive rotating rod, a synchronizing mechanism, a pressure head, and an auxiliary adjusting mechanism. The top surface of the motor support has a placement position for the shaded-pole motor, and its bottom surface has an opening through which the motor output shaft passes. The mounting bracket is located on one side of the motor support and extends upwards. One end of the active rocker arm is hinged to the mounting bracket, and one end of the passive rotating rod is hinged to the mounting bracket, forming a cross with the active rocker arm. When the active rocker arm rotates, it drives the passive rotating rod to rotate via the synchronizing mechanism. The pressure head is located at the end of the passive rotating rod away from the mounting bracket, and the motor support is located on the rotation path of the pressure head. The auxiliary adjustment mechanism includes an adjustment box, a straightening mechanism, a damping mechanism, and a switching mechanism. The adjustment box is located on the bottom surface of the motor support, and its top surface is provided with an output shaft channel. The straightening mechanism and the damping mechanism are located inside the adjustment box. The switching mechanism is used to switch the positions of the straightening mechanism and the damping mechanism. The straightening mechanism is used to straighten the output shaft of the shaded-pole motor, and the damping mechanism is used to provide damping for the rotation of the output shaft of the shaded-pole motor.

[0006] Preferably, it also includes a handle, which is disposed at the top of the active lever.

[0007] Preferably, the synchronization mechanism includes a crank located inside the active rocker arm and above the mounting frame, the passive rotating rod passing through the crank and the active rocker arm, the top end of the crank being hinged to the active rocker arm, and the bottom end being hinged to the passive rotating rod.

[0008] Preferably, the synchronization mechanism further includes a pin, and the crank is hinged to the active rocker arm and the passive rotating rod, as well as to the mounting bracket and the active rocker arm and the passive rotating rod, via the pin.

[0009] Preferably, it also includes a screw, a cover plate, and a nut. The cover plate is disposed on the top and bottom surfaces of the end of the driven rotating rod. The screw passes through the cover plate and the driven rotating rod. The nut is screwed onto the screw and is located on the side of the cover plate that is far away from it. The pressure head is disposed at the bottom end of the screw.

[0010] Preferably, the switching mechanism includes an electric slide, a movable plate, an electric turntable, and a rotating plate. The electric slide is disposed on the inner side wall of the adjusting box, and its mover is connected to the side wall of the movable plate. The electric turntable is disposed on the side wall of the movable plate away from the electric slide, and its rotation surface is connected to the side wall of the rotating plate. The straightening mechanism and the damping mechanism are disposed on the side wall of the rotating plate away from the electric turntable.

[0011] Preferably, the straightening mechanism includes a rigid support sleeve and an elastic disk. The rigid support sleeve is disposed on the side wall of the rotating plate, and the elastic disk is disposed inside the rigid support sleeve. A gradual channel is provided inside the elastic disk, and the size of the gradual channel gradually decreases along the insertion direction of the output shaft of the shaded pole motor.

[0012] Preferably, the damping mechanism includes an annular electrode, an outer damping ring, an inner damping ring, an annular soft bladder, and an electrorheological fluid. The annular electrode is disposed on the side wall of the rotating plate, the outer damping ring is located inside the annular electrode, the inner damping ring is located inside the outer damping ring and is slidably connected to the outer damping ring, the annular soft bladder is disposed on the inner side wall of the outer damping ring and is in close contact with the outer side wall of the inner damping ring, and the electrorheological fluid is disposed in the annular soft bladder.

[0013] Preferably, the damping mechanism further includes ball bearings, and the inner wall of the damping outer ring and the outer wall of the damping inner ring are provided with receiving grooves, in which the ball bearings are located.

[0014] Preferably, the inner wall of the damping inner ring is provided with a keyway, which is used to cooperate with the key on the output shaft of the shaded pole motor.

[0015] Compared with the prior art, the beneficial effects of the present invention are: ① After placing the shaded pole motor on the motor carrier, the active swing arm can be pulled upward to rotate. While the swing arm is rotating, the passive rotating arm is driven to rotate synchronously through the synchronization mechanism. After the passive rotating arm rotates, the pressure head at its end can press against the center of the patch bracket of the shaded pole motor to achieve clamping and positioning. Thus, the patch bracket can be screwed by a screw machine. ② An adjustment box is set at the bottom of the motor support. The output shaft of the shaded pole motor can be inserted into the adjustment box through the output shaft channel. The set straightening mechanism and damping mechanism can straighten the output shaft of the shaded pole motor in sequence, while providing rotational damping, so that a small relative torque is generated between the stator and the iron plate support of the shaded pole motor, and a pre-tightening anti-loosening torque is provided for the screws to prevent the screws from loosening later. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only preferred embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a positioning device for assembling a shaded-pole motor according to the present invention; Figure 2 This is a schematic diagram of the connection structure between the synchronization mechanism, the active swing arm, and the passive rotating arm of a positioning device for assembling a shaded pole motor according to the present invention. Figure 3 This is a schematic diagram of the auxiliary adjustment mechanism of a positioning device for assembling a shaded-pole motor according to the present invention; Figure 4This is a schematic diagram of the straightening mechanism of a positioning device for assembling a shaded-pole motor according to the present invention; Figure 5 This is a schematic diagram of the damping mechanism of a positioning device for assembling a shaded-pole motor according to the present invention; Figure 6 This is a schematic diagram of the structure of a shaded-pole motor to which a positioning device for assembling a shaded-pole motor of the present invention is applied; In the diagram, 1. Motor support; 2. Mounting bracket; 3. Active swing arm; 4. Passive swing arm; 5. Pressure head; 6. Placement position; 7. Opening; 8. Adjustment box; 9. Output shaft channel; 10. Handle; 11. Crank; 12. Pin; 13. Screw; 14. Cover plate; 15. Nut; 16. Electric slide; 17. Moving plate; 18. Electric turntable; 19. Rotating plate; 20. Rigid support sleeve; 21. Elastic disc; 22. Gradient channel; 23. Annular electrode; 24. Damping outer ring; 25. Damping inner ring; 26. Annular soft bladder; 27. Electrorheological fluid; 28. Ball bearing; 29. ​​Receiving groove; 30. Keyway; 31. Shaded pole motor; 32. Iron sheet support. Detailed Implementation

[0018] To better understand the technical content of this invention, a specific embodiment is provided below, and the invention will be further described in conjunction with the accompanying drawings.

[0019] See Figures 1 to 6 This invention provides a positioning device for assembling a shaded-pole motor, comprising a motor support 1, a mounting bracket 2, an active rocker arm 3, a passive rotating rod 4, a synchronization mechanism, a pressure head 5, and an auxiliary adjustment mechanism. The top surface of the motor support 1 has a placement position 6 for placing the shaded-pole motor 31, and its bottom surface has an opening 7 through which the motor output shaft passes. The mounting bracket 2 is located on one side of the motor support 1 and extends upwards. One end of the active rocker arm 3 is hinged to the mounting bracket 2, and one end of the passive rotating rod 4 is hinged to the mounting bracket, forming a cross shape with the active rocker arm 3. When the active rocker arm 3 rotates, it drives the passive rotating rod 4 through the synchronization mechanism. The rotating rod 4 rotates, and the pressure head 5 is located at the end of the passive rotating rod 4 away from the mounting bracket 2. The motor bearing seat 1 is located on the rotation path of the pressure head 5. The auxiliary adjustment mechanism includes an adjustment box 8, a straightening mechanism, a damping mechanism, and a switching mechanism. The adjustment box 8 is located on the bottom surface of the motor bearing seat 1, and its top surface is provided with an output shaft channel 9. The straightening mechanism and the damping mechanism are located inside the adjustment box 8. The switching mechanism is used to switch the positions of the straightening mechanism and the damping mechanism. The straightening mechanism is used to straighten the output shaft of the shaded pole motor 31, and the damping mechanism is used to provide damping for the rotation of the output shaft of the shaded pole motor 31.

[0020] This invention provides a positioning device for assembling a shaded-pole motor. The device can position the shaded-pole motor 31 itself and its top iron plate support 32. The shaded-pole motor 31 can be placed on the placement position 6 of the motor support 1. The placement position 6 matches the shape of the shaded-pole motor 31, thus limiting its movement. Simultaneously, the opening 7 at the bottom of the motor support 1 allows the output shaft of the shaded-pole motor 31 to pass through. After the shaded-pole motor 31 is placed, the originally horizontally positioned active rocker arm 3 can be pulled. The active rocker arm 3 and the passive rotating rod 4 form a cross shape. During rotation, they can be synchronized by a synchronous mechanism. The mechanism drives the originally vertically positioned passive rotating rod 4 to rotate synchronously. Eventually, the active swing rod 3 rotates to a vertical state, while the passive rotating rod 4 rotates to a horizontal state. Its end rotates to the top of the motor support 1. A pressure head 5 is set at the end of the passive rotating rod 4. After the passive rotating rod 4 rotates to a horizontal state, the pressure head 5 can press the iron plate support 32 on the top of the shaded pole motor 31, so that the screw machine can perform screw-locking operation on the iron plate support 32. Through the dual positioning function of the motor support 1 and the pressure head 5, the shaded pole motor 31 and the iron plate support 32 can be positioned, improving the reliability of assembly.

[0021] An adjustment box 8 is provided at the bottom of the motor carrier 1. An output shaft channel 9 is provided on the top surface of the adjustment box 8. When the shaded-pole motor 31 is placed in the motor carrier 1, its output shaft can extend into the adjustment box 8 through the opening 7 and the output shaft channel 9. A straightening mechanism, a damping mechanism, and a switching mechanism are provided inside the adjustment box 8. The switching mechanism can switch the straightening mechanism and the damping mechanism, so that the straightening mechanism and the damping mechanism are connected to the output shaft of the shaded-pole motor 31 in sequence. The straightening mechanism can straighten the output shaft of the shaded-pole motor 31 to prevent the output shaft from being skewed. This can cause subsequent assembly of transmission components to jam. However, the damping mechanism can provide damping during the rotation of the output shaft of the shaded-pole motor 31. Under the action of damping, the stator core of the shaded-pole motor 31 is driven by the output shaft, but the iron plate support 32 on the top of the shaded-pole motor 31 is firmly pressed by the pressure head 5, so that the stator core cannot rotate. As a result, a small relative torque is generated between the stator and the iron plate support 32, allowing the screw that has just been locked to automatically obtain the pre-tightening anti-loosening torque without additional operation, avoiding the subsequent loosening of the screw. Moreover, the damping torque is adjustable to adapt to iron plate supports 32 of different thicknesses.

[0022] Preferably, it also includes a handle 10, which is disposed at the top of the active swing arm 3.

[0023] The handle 10 allows staff to easily pull the active swing arm 3 to rotate it.

[0024] Preferably, the synchronization mechanism includes a crank 11 located inside the active rocker arm 3 and above the mounting frame 2. The passive rotating rod 4 passes through the crank 11 and the active rocker arm 3. The top end of the crank 11 is hinged to the active rocker arm 3, and its bottom end is hinged to the passive rotating rod 4.

[0025] When the active rocker arm 3 rotates, its middle part can pull the upper end of the crank 11, while the lower end of the crank 11 is hinged to the passive rotating rod 4. Therefore, under the operation of the crank 11, the passive rotating rod 4 can be pulled to rotate. The active rocker arm 3 and the passive rotating rod 4 are always in a cross shape, so as to realize the pressing of the pressure head 5 on the iron plate support 32.

[0026] Preferably, the synchronization mechanism further includes a pin 12, and the crank 11 is hinged to the active rocker arm 3 and the passive rotating rod 4, as well as to the mounting bracket 2 and the active rocker arm 3 and the passive rotating rod 4, via the pin 12.

[0027] During rotation, the active rocker arm 3 and the passive rotating arm 4 can rotate around the position of the pin 12 as an axis to ensure the stability of rotation.

[0028] Preferably, it also includes a screw 13, a cover plate 14, and a nut 15. The cover plate 14 is disposed on the top and bottom surfaces of the end of the passive rotating rod 4. The screw 13 passes through the cover plate 14 and the passive rotating rod 4. The nut 15 is screwed onto the screw 13 and is located on the side of the cover plate 14 that is far away from each other. The pressure head 5 is disposed at the bottom end of the screw 13.

[0029] The pressure head 5 of the present invention is configured to be position-adjustable. Its top is connected to the screw 13, and the screw 13 passes through the passive rotating rod 4. Cover plates 14 are provided on both the upper and lower sides of the passive rotating rod 4. Nuts 15 are provided on the outer side of the cover plates 14. The nuts 15 are screwed to the screw 13. By rotating the nuts 15, the cover plates 14 can be pressed onto the passive rotating rod 4, thereby fixing the pressure head 5. When it is necessary to adjust the position of the pressure head 5, simply loosen the nuts 15 and pull the screw 13 to move along the passive rotating rod 4. At the same time, by loosening the nuts 15, the screw 13 can be moved up and down to adjust the height of the pressure head 5.

[0030] Preferably, the switching mechanism includes an electric slide 16, a moving plate 17, an electric turntable 18, and a rotating plate 19. The electric slide 16 is disposed on the inner side wall of the adjusting box 8, and its mover is connected to the side wall of the moving plate 17. The electric turntable 18 is disposed on the side wall of the moving plate 17 away from the electric slide 16, and its rotating surface is connected to the side wall of the rotating plate 19. The straightening mechanism and the damping mechanism are disposed on the side wall of the rotating plate 19 away from the electric turntable 18.

[0031] An electric slide table 16 is provided in the regulating box 8. It can drive the straightening mechanism and the damping mechanism to move horizontally through the moving plate 17, the electric turntable 18 and the rotating plate 19, so as to connect the straightening mechanism or the damping mechanism to the output shaft of the shaded pole motor 31. The electric turntable 18 can drive the rotating plate 19 to rotate, thereby changing the position of the straightening mechanism and the damping mechanism provided on the rotating plate 19, so that the straightening mechanism and the damping mechanism can be connected to the output shaft of the shaded pole motor 31 respectively.

[0032] Preferably, the straightening mechanism includes a rigid support sleeve 20 and an elastic disk 21. The rigid support sleeve 20 is disposed on the side wall of the rotating plate 19, and the elastic disk 21 is disposed inside the rigid support sleeve 20. A gradient channel 22 is provided inside the elastic disk 21, and the size of the gradient channel 22 gradually decreases along the insertion direction of the output shaft of the shaded pole motor 31.

[0033] After the straightening mechanism is rotated to one side of the output shaft of the shaded pole motor 31 by the electric turntable 18, the electric slide table 16 can drive the rigid support sleeve 20 to move upward through the moving plate 17 and other components, so that the rigid support sleeve 20 is close to the bottom of the output shaft channel 9. When the shaded pole motor 31 is placed on the motor carrier 1, its output shaft can enter the adjustment box 8 through the output shaft channel 9 and extend into the elastic disc 21. The inner wall of the elastic disc 21 is a V-shaped gradient channel 22, which holds the output shaft tightly. When the shaded pole motor 31 is powered on, the output shaft will rotate. Under the holding force of the elastic disc 21, the slightly bent output shaft can be automatically straightened and shaped to avoid jamming during subsequent assembly of transmission components.

[0034] After the alignment is completed, the electric slide table 16 can drive the rigid support sleeve 20 to descend via the moving plate 17, so that the elastic disk 21 leaves the output shaft of the shaded pole motor 31, thus completing the alignment process.

[0035] Preferably, the damping mechanism includes an annular electrode 23, a damping outer ring 24, a damping inner ring 25, an annular soft bladder 26, and an electrorheological fluid 27. The annular electrode 23 is disposed on the side wall of the rotating plate 19. The damping outer ring 24 is located inside the annular electrode 23. The damping inner ring 25 is located inside the damping outer ring 24 and is slidably connected to the damping outer ring 24. The annular soft bladder 26 is disposed on the inner side wall of the damping outer ring 24 and is in close contact with the outer side wall of the damping inner ring 25. The electrorheological fluid 27 is disposed in the annular soft bladder 26.

[0036] After the straightening process is completed, the rotating plate 19 is rotated by the electric turntable 18, causing the damping mechanism to rotate to the output shaft side of the shaded pole motor 31. Then, driven by the electric slide table 16, the damping mechanism can be raised, and the output shaft of the shaded pole motor 31 passes through the inner damping ring 25 and cooperates with the inner damping ring 25. After the shaded pole motor 31 is energized, its output shaft will drive the inner damping ring 25 to rotate. An annular soft bladder 26 is set between the inner damping ring 25 and the outer damping ring 24, which is filled with electrorheological fluid 27. Under normal conditions, the electrorheological fluid 27 is liquid, and the damping force it provides is relatively small. An annular electrode 23 is provided on the outside of the outer ring 24. When the annular electrode 23 is energized, an electric field is generated. Depending on the strength of the electric field, the viscosity of the electrorheological fluid 27 will change differently. The greater the strength, the greater the viscosity, and the more the electrorheological fluid 27 tends to be solid. Therefore, it can provide a certain damping for the inner ring 25. Under the damping action, a small relative torque is generated between the stator and the iron plate support 32, so that the screw can obtain a pre-tightening anti-loosening torque and improve the stability of the connection. By adjusting the current of the annular electrode 23, different damping forces can be provided to meet different assembly requirements.

[0037] Preferably, the damping mechanism further includes a ball bearing 28, and the inner wall of the damping outer ring 24 and the outer wall of the damping inner ring 25 are provided with a receiving groove 29, in which the ball bearing 28 is located.

[0038] When the inner damping ring 25 rotates, it can achieve relative rotation with the outer damping wall through the ball bearings 28 in the receiving groove 29. The damping force provided by the ball bearings 28 is negligible, so the damping force can be adjusted by adjusting the viscosity of the electrorheological fluid 27.

[0039] Preferably, the inner wall of the damping inner ring 25 is provided with a keyway 30, which is used to cooperate with the key on the output shaft of the shaded pole motor 31.

[0040] When the screws are pre-tightened, after the output shaft of the shaded pole motor 31 enters the regulating box 8, the flat key on its output shaft can extend into the keyway 30 on the inner side wall of the damping inner ring 25 to achieve a fit, so that the rotation of the output shaft of the shaded pole motor 31 can drive the damping inner ring 25 to rotate.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A positioning device for assembling a shaded-pole motor, characterized in that, The system includes a motor support, a mounting bracket, an active rocker arm, a passive rotating rod, a synchronizing mechanism, a pressure head, and an auxiliary adjustment mechanism. The motor support has a placement position on its top surface for the shaded-pole motor, and an opening on its bottom surface for the motor output shaft to pass through. The mounting bracket is located on one side of the motor support and extends upwards. One end of the active rocker arm is hinged to the mounting bracket, and one end of the passive rotating rod is hinged to the mounting base, forming a cross with the active rocker arm. When the active rocker arm rotates, it drives the passive rotating rod to rotate via the synchronizing mechanism. The pressure head is located at the end of the passive rotating rod furthest from the mounting bracket, and the motor support is located on the rotation path of the pressure head. The auxiliary adjustment mechanism includes an adjustment box, a straightening mechanism, a damping mechanism, and a switching mechanism. The adjustment box is located on the bottom surface of the motor support, and its top surface has an output shaft channel. The straightening and damping mechanisms are located inside the adjustment box. The switching mechanism is used to switch the positions of the straightening and damping mechanisms. The straightening mechanism is used to straighten the output shaft of the shaded-pole motor, and the damping mechanism is used to provide damping for the rotation of the output shaft of the shaded-pole motor.

2. The positioning device for assembling a shaded-pole motor according to claim 1, characterized in that, It also includes a handle, which is located at the top of the active lever.

3. The positioning device for assembling a shaded-pole motor according to claim 1, characterized in that, The synchronization mechanism includes a crank located inside the active rocker arm and above the mounting frame. The passive rocker arm passes through the crank and the active rocker arm. The top end of the crank is hinged to the active rocker arm, and its bottom end is hinged to the passive rocker arm.

4. A positioning device for assembling a shaded-pole motor according to claim 3, characterized in that, The synchronization mechanism also includes pins, and the crank is hinged to the active rocker arm and the passive rotating rod, as well as to the mounting bracket and the active rocker arm and the passive rotating rod, via pins.

5. A positioning device for assembling a shaded-pole motor according to claim 1, characterized in that, It also includes a screw, a cover plate, and a nut. The cover plate is disposed on the top and bottom surfaces of the end of the driven rotating rod. The screw passes through the cover plate and the driven rotating rod. The nut is screwed onto the screw and is located on the side of the cover plate that is far away from it. The pressure head is disposed at the bottom end of the screw.

6. A positioning device for assembling a shaded-pole motor according to claim 1, characterized in that, The switching mechanism includes an electric slide, a movable plate, an electric turntable, and a rotating plate. The electric slide is disposed on the inner side wall of the adjustment box, and its mover is connected to the side wall of the movable plate. The electric turntable is disposed on the side wall of the movable plate away from the electric slide, and its rotation surface is connected to the side wall of the rotating plate. The straightening mechanism and the damping mechanism are disposed on the side wall of the rotating plate away from the electric turntable.

7. A positioning device for assembling a shaded-pole motor according to claim 6, characterized in that, The straightening mechanism includes a rigid support sleeve and an elastic disk. The rigid support sleeve is disposed on the side wall of the rotating plate, and the elastic disk is disposed inside the rigid support sleeve. A gradual channel is provided inside the elastic disk, and the size of the gradual channel gradually decreases along the insertion direction of the output shaft of the shaded pole motor.

8. A positioning device for assembling a shaded-pole motor according to claim 6, characterized in that, The damping mechanism includes an annular electrode, an outer damping ring, an inner damping ring, an annular soft bladder, and an electrorheological fluid. The annular electrode is disposed on the side wall of the rotating plate. The outer damping ring is located inside the annular electrode. The inner damping ring is located inside the outer damping ring and is slidably connected to the outer damping ring. The annular soft bladder is disposed on the inner side wall of the outer damping ring and is in close contact with the outer side wall of the inner damping ring. The electrorheological fluid is disposed in the annular soft bladder.

9. A positioning device for assembling a shaded-pole motor according to claim 8, characterized in that, The damping mechanism further includes ball bearings, and the inner wall of the damping outer ring and the outer wall of the damping inner ring are provided with receiving grooves, in which the ball bearings are located.

10. A positioning device for assembling a shaded-pole motor according to claim 8, characterized in that, The inner wall of the damping inner ring is provided with a keyway, which is used to mate with a key on the output shaft of the shaded pole motor.

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