Motor with damper

Abstract

A motor with a damper, comprising a cover assembly, a stator assembly, a rotor assembly and a damper. The rotor assembly is installed in the stator assembly; the cover assembly is installed on the stator assembly; and two ends of the rotor assembly are rotationally supported by the stator assembly and the cover assembly respectively. The damper comprises a housing, N and S-pole permanent magnets, an end cover, a magnetic ring, an annular frame and a fixed ring. The housing is internally provided with the plurality of N and S-pole permanent magnets which are alternately distributed, and is fixed to an end face of a casing of the motor. The fixed ring is installed on a motor shaft in an interference fit manner; and the end cover is fixed to the end of the housing to protect the damper. The magnetic ring and the alternately distributed N and S-pole permanent magnets form a magnetic circuit; and an air gap is formed between an outer circular surface of the magnetic ring and inner arc surfaces of the N and S-pole permanent magnets. The annular frame comprises an inner ring and an outer ring, the inner ring and the outer ring being connected by means of an elastic structure, the magnetic ring being fixed on the outer ring, and the inner ring being fixed on the fixed ring. The present application can avoid failures of the damper when the motor is in use.

Description

A motor with a damper Technical Field

[0001] The invention relates to a motor with a damper. Background Art

[0002] In motor transmission mechanisms, the rapid reduction of inertial loads can cause significant impact, vibration, and noise, damaging the transmission mechanism and motor. This can also affect their operational stability and lifespan. Furthermore, transmission mechanisms are prone to problems where the motor stops after reaching the designated operating position, but position fluctuations persist, preventing full position lock. This directly impacts the control accuracy of the transmission mechanism.

[0003] Also, since the operating temperature range of the motor is between -40℃ and +125℃, and since the magnetic ring is made of magnetic materials, the fixing ring is made of metal materials, and the annular frame is made of plastic, during the operation of the motor, the magnetic ring is rapidly and repeatedly magnetized by the N-pole and S-pole permanent magnets, and the temperature of the magnetic ring, annular frame and fixing ring will increase significantly. The thermal expansion coefficients of the magnetic material, metal material and plastic are different, and there is stress that damages the said parts, resulting in cracks in the magnetic ring and fracture of the annular frame, causing the damper function to fail. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a motor with a damper in view of the existing technical situation, so that the damper function will not fail due to the operating temperature of the motor.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: a motor with a damper, comprising a cover assembly, a stator assembly, a rotor assembly and a damper, the rotor assembly being installed in the stator assembly, the cover assembly being installed on the stator assembly, and the two ends of the rotor assembly being rotatably supported by the stator assembly and the cover assembly respectively, the damper comprising a shell, an N-pole permanent magnet, an end cover, a magnetic ring, an annular frame, an S-pole permanent magnet, and a fixed ring, a plurality of alternately distributed N-pole permanent magnets and S-pole permanent magnets are arranged in the shell, the shell is fixed to the end face of the motor casing, the fixed ring is installed on the motor shaft with an interference fit, the end cover is fixed to the end of the shell to protect the damper, the magnetic ring and the alternately distributed N-pole permanent magnets and S-pole permanent magnets form a magnetic field loop, an air gap is formed between the outer circular surface of the magnetic ring and the inner arc surface of the N-pole permanent magnet and the S-pole permanent magnet, the annular frame comprises an inner ring and an outer ring, the inner ring and the outer ring are connected by an elastic structure, the magnetic ring is fixed on the outer ring, and the inner ring is fixed on the fixed ring.

[0006] Preferably, the elastic structure is as follows: a plurality of inner spokes are evenly arranged on the inner ring of the annular frame, a plurality of outer spokes are evenly arranged on the outer ring, and the inner spokes and the outer spokes are connected by arc-shaped spokes.

[0007] Better, the elastic structure is: a plurality of inner ring left inner spokes and inner ring right inner spokes are evenly arranged on the left and right sides of the inner ring, and a plurality of outer ring left outer spokes and outer ring right outer spokes are evenly arranged on the left and right sides of the outer ring, and the inner ring left inner spoke and the outer ring right outer spoke as well as the inner ring right inner spoke and the outer ring left outer spoke are connected by a plurality of arc spokes and axial spokes respectively.

[0008] Preferably, the elastic structure is as follows: a plurality of inner spokes are evenly arranged on the inner ring, a plurality of outer spokes are evenly arranged on the outer ring, and the inner spokes and the outer spokes are connected by arc-shaped spokes.

[0009] Better yet, the elastic structure is: a plurality of left inner spokes and right inner spokes are evenly arranged on the left and right sides of the inner ring, and a plurality of left outer spokes and right outer spokes are evenly arranged on the left and right sides of the outer ring, and the left inner spoke and the right inner spoke and the left outer spoke are connected by a plurality of arc spokes respectively.

[0010] Better yet, the elastic structure is: a plurality of middle inner spokes are evenly arranged in the middle position of the inner ring along the axial direction, and an intermediate ring is provided to connect with all the middle inner spokes, and a plurality of left outer spokes and right outer spokes are respectively evenly arranged on the left and right sides of the outer ring, and the left outer spoke and right outer spoke are respectively connected to the intermediate ring through a plurality of axial spokes.

[0011] Better, the elastic structure is: multiple left inner spokes and right inner spokes are evenly arranged on the left and right sides of the inner ring, and multiple left outer spokes and right outer spokes are evenly arranged on the left and right sides of the outer ring, and the adjacent left inner spokes and left outer spokes and right inner spokes and right outer spokes are connected by multiple U-shaped spokes.

[0012] Preferably, the fixing ring and the magnetic ring are integrally formed by injection molding with the annular frame in an inlay manner.

[0013] Preferably, a plurality of bosses are provided in the housing to position the N-pole permanent magnet and the S-pole permanent magnet.

[0014] Preferably, an insert spring is provided to support the N-pole permanent magnet and the S-pole permanent magnet, so that they are fixed more firmly and reliably in the housing.

[0015] Preferably, a fixing clip is provided at the end of the shell to secure the end cover to prevent it from falling off, making the end cover more reliably fixed.

[0016] Preferably, a positioning hole is provided at the center of the other end of the shell to cooperate with the outer circle of the housing bearing chamber, so as to better ensure the concentricity of the shell and the rotor assembly, so that the air gap formed between the outer circle surface of the magnetic ring and the inner arc surface of the N-pole permanent magnet and the S-pole permanent magnet is more uniform and the damping torque is more stable.

[0017] Better yet, the magnetic ring is provided with an inner circular surface, a left end surface and a right end surface, which cooperate with the annular groove provided on the annular frame, so that the magnetic ring is fixed on the annular frame more reliably, preventing the magnetic ring from loosening axially, and a plurality of limiting grooves are evenly provided on the inner circular surface, which cooperate with the plurality of limiting ribs provided in the annular groove to further prevent the magnetic ring from rotating relative to the annular frame.

[0018] Better yet, an annular boss is provided at the axial middle position on the inner circular surface of the inner ring of the annular frame, and a plurality of evenly distributed limiting ribs are symmetrically provided on both sides of the annular boss, which respectively cooperate with the annular groove provided at the middle position of the outer circular surface of the fixed ring and the plurality of evenly distributed limiting grooves symmetrically provided on both sides of the annular groove to prevent the annular frame from axially moving and rotating relative to the fixed ring.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] Since the annular frame includes an inner ring and an outer ring, the inner ring and the outer ring are connected by an elastic structure, which can prevent the magnetic ring from cracking and the annular frame from breaking due to temperature rise, which may cause the damper to fail when the motor is in use.

[0021] Also, by arranging a damper at the output end of the motor shaft, the rotor assembly generates a damping torque during the operation of the motor, reducing the inertial load of the transmission mechanism, thereby reducing impact, vibration and noise, improving the stability and service life of the transmission mechanism and the motor, and reducing the position fluctuation when the transmission mechanism stops, achieving position locking and improving control accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a schematic structural diagram of a motor with a damper according to embodiment 1 of the present invention.

[0023] FIG2 is an exploded schematic diagram of a motor with a damper according to Example 1 of the present invention.

[0024] FIG3 is a cross-sectional view taken along line AA in FIG2 .

[0025] FIG4 is a schematic diagram of a magnetic ring of a motor with a damper according to an embodiment 1 of the present invention.

[0026] FIG5 is a schematic diagram of an annular frame of a motor with a damper according to embodiment 1 of the present invention.

[0027] FIG6 is a schematic diagram of a fixing ring of a motor with a damper according to embodiment 1 of the present invention.

[0028] FIG7 is a schematic diagram of an annular frame of a motor with a damper according to embodiment 2 of the present invention.

[0029] FIG8 is a schematic diagram of an annular frame of a motor with a damper according to embodiment 3 of the present invention.

[0030] FIG9 is a schematic diagram of an annular frame of Example 4 of an embodiment of a motor with a damper according to the present invention.

[0031] FIG10 is a schematic diagram of an annular frame of Example 5 of an embodiment of a motor with a damper according to the present invention.

[0032] FIG11 is a schematic diagram of an annular frame of Example 6 of an embodiment of a motor with a damper according to the present invention.

[0033] Explanation of the reference numbers in the figure: 1. Cover assembly; 11. Cylindrical bearing; 2. Stator assembly; 21. Housing; 211. Outer diameter of bearing chamber; 212. Threaded hole; 213. Fixing clip; 22. Cylindrical bearing; 3. Rotor assembly; 31. Motor shaft; 4. Damper; 41. Housing; 411. Fixing clip; 412. Boss; 413. Circular hole; 414. Positioning hole; 42. N-pole permanent magnet; 421. Inner arc surface; 43. End cover; 44. Magnetic ring; 441. Inner circular surface; 442. Outer circular surface; 443. Limiting groove; 444. Left end surface; 445. Right end surface; 45. Ring frame; 451. Limiting rib; 452. Inner ring; 453. Outer ring; 454. Inner spoke; 455. Arc spoke; 456. Annular boss; 457, outer spoke; 458, annular groove; 459, limiting rib; 4510, inner circular surface; 46, S-pole permanent magnet; 461, inner arc surface; 47, fixing ring; 471, inner hole; 472, outer circular surface; 473, limiting groove; 474, annular groove; 48, insert spring; 49, screw; 50, annular frame; 501, inner ring; 502, outer ring; 503, right inner spoke; 504, left inner spoke; 505, right outer spoke; 506, curved spoke; 507, axial spoke; 508, left outer spoke; 60, ring frame; 601, inner ring; 602, outer ring; 603, inner spoke; 604, curved spoke; 605, outer spoke; 70, ring frame; 701, inner ring; 702, outer ring; 703, left inner spoke; 704, left outer spoke; 705, right inner spoke; 706, right outer spoke; 707, S-shaped spoke; 8 0. Ring frame; 801. Inner ring; 802. Outer ring; 803. Middle ring; 804. Axial spoke; 805. Right outer spoke; 806. Left outer spoke; 807. Middle inner spoke; 90. Ring frame; 901. Inner ring; 902. Outer ring; 903. Left inner spoke; 904. Right inner spoke; 905. Right outer spoke; 906. U-shaped spoke; 907. Left outer spoke. DETAILED DESCRIPTION

[0034] The present invention will be further described below with reference to the accompanying drawings and examples. Example 1

[0035] As shown in Figures 1-6, a motor with a damper includes a cover assembly 1, a stator assembly 2, a rotor assembly 3 and a damper 4.

[0036] The cover assembly 1 is provided with a cylindrical bearing 11 at the center of its left end, and the stator assembly 2 is provided with a cylindrical bearing 22 at the center of its right end, which respectively cooperate with the two ends of the motor shaft 31 provided in the rotor assembly 3 to support it, and the rotor assembly 3 can rotate in the circumferential direction.

[0037] The damper 4 includes a housing 41 , an N-pole permanent magnet 42 , an end cover 43 , a magnetic ring 44 , an annular frame 45 , an S-pole permanent magnet 46 , a fixing ring 47 , an insert spring 48 and a screw 49 .

[0038] A plurality of bosses 412 are provided in the shell 41 to position a plurality of alternatingly distributed N-pole permanent magnets 42 and S-pole permanent magnets 46 therein, and an insertion spring 48 is provided to support the N-pole permanent magnets 42 and S-pole permanent magnets 46 so that they are firmly and reliably fixed in the shell 41 .

[0039] A positioning hole 414 is provided at the center of the end of the shell 41 to cooperate with the outer circle 211 of the bearing chamber of the casing 21 to ensure the concentricity of the shell 41 and the rotor assembly 3, so that the air gap formed between the outer circle 442 of the magnetic ring 44 and the inner arc surface 421 of the N-pole permanent magnet 42 and the inner arc surface 461 of the S-pole permanent magnet 46 is uniform, and the damping torque is more stable.

[0040] The housing 41 is engaged with the threaded hole 212 on the end surface of the housing 21 by means of screws 49 to fix it to the end surface of the housing 21 of the motor.

[0041] The fixing ring 47 and the magnetic ring 44 are integrally formed by injection molding with the annular frame 45 in an inlay manner.

[0042] The magnetic ring 44 is provided with an inner circular surface 441, a left end surface 444 and a right end surface 445, which cooperate with the annular groove 458 provided on the annular frame 45, so that the magnetic ring 44 is reliably fixed on the annular frame 45 to prevent the magnetic ring 44 from axial loosening, and a plurality of limiting grooves 443 are evenly provided on the inner circular surface 441 to cooperate with a plurality of limiting ribs 451 provided in the annular groove 458 to further prevent the magnetic ring 44 from rotating relative to the annular frame 45.

[0043] An annular boss 456 is provided on the inner circular surface 4510 of the inner ring 452 of the annular frame 45 at an axially middle position, and a plurality of evenly distributed limiting ribs 459 are symmetrically provided on both sides of the annular boss 456, which respectively cooperate with the annular groove 474 provided at the middle position of the outer circular surface 472 of the fixing ring 47 and the plurality of evenly distributed limiting grooves 473 symmetrically provided on both sides of the annular groove 474, so as to further prevent the annular frame 45 from axially moving and rotating relative to the fixing ring 47.

[0044] The annular frame 45 has a plurality of inner spokes 454 evenly arranged on the inner ring 452 and a plurality of outer spokes 457 evenly arranged on the outer ring 453 . The inner spokes 454 and the outer spokes 457 are connected by arc-shaped spokes 455 .

[0045] Typically, the operating temperature range of a motor is between -40°C and +125°C. Due to the differences in the magnetic material used for the magnetic ring 44, the metal material used for the fixing ring 47, and the plastic material used for the annular frame 45, during operation of the motor, the temperature of the magnetic ring 44, the annular frame 45, and the fixing ring 47 will rise significantly due to the rapid and repeated magnetization of the magnetic ring 44 by the N-pole permanent magnet 42 and the S-pole permanent magnet 46. The thermal expansion coefficients of the magnetic material, the metal material, and the plastic are different, and there is stress that damages the parts, resulting in cracks in the magnetic ring 44 and fractures in the annular frame 45, causing the damper 4 to fail in function. The structural setting of the annular frame 45 can effectively reduce this risk.

[0046] The fixing ring 47 is designed to be installed on the motor shaft 31 with an interference fit, and the end cover 43 is fixed to the end of the shell 41 to protect the damper 4, and a fixing clip 411 is provided at the end of the shell 41 to fix the end cover 43 to prevent it from falling off, making the end cover 43 more reliably fixed.

[0047] The magnetic ring 44 and the N-pole permanent magnets 42 and S-pole permanent magnets 46 alternately distributed in the housing 41 form a magnetic field loop. During the operation of the motor, the rotor assembly 3 drives the magnetic ring 44 to rotate, generating a damping torque between the magnetic ring 44 and the N-pole permanent magnets 42 and S-pole permanent magnets 46, which can reduce the inertial load of the transmission mechanism, thereby reducing impact, vibration and noise, improving the stability and service life of the transmission mechanism and the motor, and reducing the position fluctuation of the transmission mechanism when it stops after reaching the specified working position, realizing position locking, and improving the control accuracy of the transmission mechanism. Example 2

[0048] As shown in FIG. 7 , a motor with a damper has the same structure as the motor of Example 1 except for the connection structure between the inner ring 501 and the outer ring 502 of the annular frame 50 .

[0049] More specifically, the annular frame 50 has a plurality of left inner spokes 504 and right inner spokes 503 evenly arranged on the left and right sides of the inner ring 501, and a plurality of left outer spokes 508 and right outer spokes 505 evenly arranged on the left and right sides of the outer ring 502, respectively. The left inner spoke 504 and the right outer spoke 505, as well as the right inner spoke 503 and the left outer spoke 508, are connected respectively by a plurality of arc spokes 506 and axial spokes 507.

[0050] During the operation of the motor, since the magnetic ring 44 is rapidly and repeatedly magnetized by the N-pole permanent magnet 42 and the S-pole permanent magnet 46, the temperature of the magnetic ring 44, the annular frame 50 and the fixed ring 47 will increase significantly. The thermal expansion coefficients of the magnetic material, metal material and plastic are different, and there is stress that damages the parts, causing the magnetic ring 44 to crack and the annular frame 50 to break, resulting in the damper 4 malfunctioning. The structural setting of the annular frame 50 can effectively reduce this risk. Example 3

[0051] As shown in FIG8 , a motor with a damper has the same structure as the motor of Example 1 except for the connection structure between the inner ring 601 and the outer ring 602 of the annular frame 60 .

[0052] More specifically, the annular frame 60 has a plurality of inner spokes 603 evenly arranged on the inner ring 601 and a plurality of outer spokes 605 evenly arranged on the outer ring 602 . The inner spokes 603 and the outer spokes 605 are connected by arc-shaped spokes 604 .

[0053] During the operation of the motor, since the magnetic ring 44 is rapidly and repeatedly magnetized by the N-pole permanent magnet 42 and the S-pole permanent magnet 46, the temperature of the magnetic ring 44, the annular frame 60 and the fixed ring 47 will increase significantly. The thermal expansion coefficients of the magnetic material, metal material and plastic are different, and there is stress that damages the parts, causing the magnetic ring 44 to crack and the annular frame 60 to break, resulting in the damper 4 malfunctioning. The structural setting of the annular frame 60 can effectively reduce this risk. Example 4

[0054] As shown in FIG. 9 , a motor with a damper has the same structure as the motor of Example 1 except for the connection structure between the inner ring 701 and the outer ring 702 of the annular frame 70 .

[0055] More specifically, the annular frame 70 has a plurality of left inner spokes 703 and right inner spokes 705 evenly arranged on the left and right sides of the inner ring 701, and a plurality of left outer spokes 704 and right outer spokes 706 evenly arranged on the left and right sides of the outer ring 702. The left inner spoke 703 and the right outer spoke 706, as well as the right inner spoke 705 and the left outer spoke 704, are connected respectively by a plurality of arc spokes 707.

[0056] During the operation of the motor, since the magnetic ring 44 is rapidly and repeatedly magnetized by the N-pole permanent magnet 42 and the S-pole permanent magnet 46, the temperature of the magnetic ring 44, the annular frame 70 and the fixed ring 47 will increase significantly. The thermal expansion coefficients of the magnetic material, metal material and plastic are different, and there is stress that damages the parts, causing the magnetic ring 44 to crack and the annular frame 70 to break, resulting in the damper 4 malfunctioning. The structural setting of the annular frame 70 can effectively reduce this risk. Example 5

[0057] As shown in FIG. 10 , a motor with a damper has the same structure as the motor of Example 1 except for the connection structure between the inner ring 801 and the outer ring 802 of the annular frame 80 .

[0058] More specifically, the annular frame 80 has a plurality of middle inner spokes 807 evenly arranged in the middle position of the inner ring 801 along the axial direction, and an intermediate ring 803 is provided to connect with all the middle inner spokes 807, and a plurality of left outer spokes 806 and right outer spokes 805 are evenly arranged on the left and right sides of the outer ring 802, respectively, and the left outer spoke 806 and the right outer spoke 805 are respectively connected to the intermediate ring 803 through a plurality of axial spokes 804.

[0059] During the operation of the motor, since the magnetic ring 44 is rapidly and repeatedly magnetized by the N-pole permanent magnet 42 and the S-pole permanent magnet 46, the temperature of the magnetic ring 44, the annular frame 80 and the fixed ring 47 will increase significantly. The thermal expansion coefficients of the magnetic material, metal material and plastic are different, and there is stress that damages the parts, causing the magnetic ring 44 to crack and the annular frame 80 to break, resulting in the damper 4 malfunctioning. The structural setting of the annular frame 80 can effectively reduce this risk. Example 6

[0060] As shown in FIG. 11 , a motor with a damper has the same structure as the motor of Example 1 except for the connection structure between the inner ring 901 and the outer ring 902 of the annular frame 90 .

[0061] More specifically, the annular frame 90 has a plurality of left inner spokes 903 and right inner spokes 904 evenly arranged on the left and right sides of the inner ring 901, and a plurality of left outer spokes 907 and right outer spokes 905 evenly arranged on the left and right sides of the outer ring 902, and the adjacent left inner spokes 903 and left outer spokes 907 and right inner spokes 904 and right outer spokes 905 are connected respectively by a plurality of U-shaped spokes 906.

[0062] During the operation of the motor, since the magnetic ring 44 is rapidly and repeatedly magnetized by the N-pole permanent magnet 42 and the S-pole permanent magnet 46, the temperature of the magnetic ring 44, the annular frame 90 and the fixed ring 47 will increase significantly. The thermal expansion coefficients of the magnetic material, metal material and plastic are different, and there is stress that damages the parts, causing the magnetic ring 44 to crack and the annular frame 90 to break, resulting in the damper 4 malfunctioning. The structural setting of the annular frame 90 can effectively reduce this risk.

[0063] It should be noted that the directional characters such as inside, outside, left, and right and the words containing such directional characters mentioned in this embodiment and this application document are only used for the convenience of explanation. They only refer to the specific directions determined during the description and do not constitute a limitation on the content and protection scope of the present invention.

Claims

1. A motor with a damper, comprising a cover assembly, a stator assembly, a rotor assembly and a damper, wherein the rotor assembly is mounted in the stator assembly, the cover assembly is mounted on the stator assembly, and two ends of the rotor assembly are rotatably supported by the stator assembly and the cover assembly, respectively, and characterized in that: The damper includes a shell, an N-pole permanent magnet, an end cover, a magnetic ring, an annular frame, an S-pole permanent magnet, and a fixed ring. A plurality of alternately distributed N-pole permanent magnets and S-pole permanent magnets are arranged in the shell. The shell is fixed to the end face of the motor casing. The fixed ring is installed on the motor shaft with an interference fit. The end cover is fixed to the end of the shell to protect the damper. The magnetic ring and the alternately distributed N-pole permanent magnets and S-pole permanent magnets form a magnetic field loop. An air gap is formed between the outer cylindrical surface of the magnetic ring and the inner arc surfaces of the N-pole permanent magnet and the S-pole permanent magnet. The annular frame includes an inner ring and an outer ring. The inner ring and the outer ring are connected by an elastic structure. The magnetic ring is fixed to the outer ring, and the inner ring is fixed to the fixed ring.

2. The motor with a damper according to claim 1, characterized in that: The elastic structure is as follows: a plurality of inner spokes are evenly arranged on the inner ring of the annular frame, a plurality of outer spokes are evenly arranged on the outer ring, and the inner spokes and the outer spokes are connected by arc spokes.

3. The motor with a damper according to claim 1, characterized in that: The elastic structure is as follows: a plurality of inner ring left inner spokes and inner ring right inner spokes are evenly arranged on the left and right sides of the inner ring, a plurality of outer ring left outer spokes and outer ring right outer spokes are evenly arranged on the left and right sides of the outer ring, the inner ring left inner spoke and the outer ring right outer spoke as well as the inner ring right inner spoke and the outer ring left outer spoke are connected respectively by a plurality of arc spokes and axial spokes.

4. The motor with a damper according to claim 1, characterized in that: The elastic structure is as follows: a plurality of inner spokes are evenly arranged on the inner ring, a plurality of outer spokes are evenly arranged on the outer ring, and the inner spokes and the outer spokes are connected by the arranged arc spokes.

5. The motor with a damper according to claim 1, characterized in that: The elastic structure is as follows: a plurality of left inner spokes and right inner spokes are evenly arranged on the left and right sides of the inner ring, a plurality of left outer spokes and right outer spokes are evenly arranged on the left and right sides of the outer ring, and the left inner spoke and the right inner spoke and the left outer spoke are connected respectively by a plurality of arc spokes.

6. The motor with a damper according to claim 1, characterized in that: The elastic structure is as follows: a plurality of middle inner spokes are evenly arranged at the middle position of the inner ring along the axial direction, and a middle ring is arranged to connect with all the middle inner spokes; a plurality of left outer spokes and right outer spokes are evenly arranged on the left and right sides of the outer ring respectively, and the left outer spoke and the right outer spoke are connected with the middle ring respectively through the plurality of axial spokes.

7. The motor with a damper according to claim 1, characterized in that: The elastic structure is as follows: a plurality of left inner spokes and right inner spokes are evenly arranged on the left and right sides of the inner ring, a plurality of left outer spokes and right outer spokes are evenly arranged on the left and right sides of the outer ring, and adjacent left inner spokes and left outer spokes as well as right inner spokes and right outer spokes are connected respectively by a plurality of U-shaped spokes.

8. The motor with a damper according to claim 1, characterized in that: The fixing ring and the magnetic ring are integrally formed by injection molding with the annular frame in an inlay manner.

9. The motor with a damper according to claim 1, characterized in that: The magnetic ring is provided with an inner circular surface, a left end surface and a right end surface, which cooperate with the annular groove provided on the annular frame, so that the magnetic ring is fixed on the annular frame more reliably and prevents the magnetic ring from axial loosening. A plurality of limiting grooves are evenly provided on the inner circular surface, which cooperate with the plurality of limiting ribs provided in the annular groove to further prevent the magnetic ring from rotating relative to the annular frame.

10. The motor with a damper according to claim 1, characterized in that: An annular boss is arranged at the axial middle position of the inner circular surface of the inner ring of the annular frame, and a plurality of evenly distributed limiting ribs are symmetrically arranged on both sides of the annular boss, which respectively cooperate with the annular groove arranged at the middle position of the outer circular surface of the fixing ring and the plurality of evenly distributed limiting grooves symmetrically arranged on both sides of the annular groove, so as to prevent the annular frame from axially moving and rotating relative to the fixing ring.

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