CN220190543U

CN220190543U - Motor rotor

Info

Publication number: CN220190543U
Application number: CN202321220106.3U
Authority: CN
Inventors: 许新江; 许峰
Original assignee: Ningbo Northstar Electromechanical Co ltd
Current assignee: Ningbo Northstar Electromechanical Co ltd
Priority date: 2023-05-16
Filing date: 2023-05-16
Publication date: 2023-12-15
Anticipated expiration: 2033-05-16

Abstract

The utility model discloses a motor rotor, which belongs to the field of motors and comprises a body structure, wherein the body structure comprises an outer iron core, a magnet, a support frame, an inner iron core and a damping piece, the outer iron core and the magnet are both arranged on the support frame, a through hole is formed in the support frame, and a plurality of V-shaped grooves are formed in the inner surface of the through hole; the inner iron core is used for being connected with a shaft of the motor; the inner iron core is arranged in the through hole and is arranged with the body structure at intervals, and a plurality of protruding parts encircling the inner iron core along the inner iron core are arranged on the inner iron core. Through injection moulding's support frame for connect closely between outer iron core and the magnet, prevent its vibrations. Through setting up the shock attenuation piece for interior iron core passes through the support frame and is connected with outer iron core, and the first connecting portion of shock attenuation piece wears to establish in first arc downthehole, and the second connecting portion wears to establish downthehole at the second arc, thereby can be through connecting in the shock attenuation piece between with interior iron core and the outer iron core steadily, thereby improved rotor structure's structural strength.

Description

Motor rotor

Technical Field

The utility model relates to the field of motors, in particular to a motor rotor.

Background

In the working process of the permanent magnet synchronous motor, the motor is easy to vibrate due to torque pulsation. The motor in the related art reduces torque pulsation output vibration by arranging damping rubber between the inner core and the outer core of the rotor structure, thereby reducing noise of the motor.

When the motor works, the inner iron core is required to drive the outer iron core to rotate, and rubber materials are additionally arranged between the inner iron core and the outer iron core for reinforcement and buffering; the rubber material can be worn in the motor work, causes great influence to the structural strength of motor rotor, and the rubber material that appears damaging can adhere in inner core and outer iron core and is difficult to the clearance.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides a motor rotor to solve the problem that the rotor structure in the related art is difficult to consider the damping effect and the structural strength. In order to solve the technical problems, the utility model is solved by the following technical scheme.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the motor rotor comprises a body structure, wherein the body structure comprises an outer iron core, a magnet, a support frame, an inner iron core and a damping piece, the outer iron core and the magnet are both arranged on the support frame, a through hole is formed in the support frame, and a plurality of V-shaped grooves are formed in the inner surface of the through hole; the inner iron core is used for being connected with a shaft of the motor; the inner iron core is arranged in the through hole and is arranged at intervals with the body structure, and a plurality of protruding parts surrounding the inner iron core are arranged on the inner iron core; the damping piece, the damping piece is made by deformable material, the damping piece is located between support frame and the interior iron core, the damping piece includes first connecting portion and second connecting portion, first connecting portion and second connecting portion are connected with support frame and interior iron core respectively.

Preferably, the outer core includes a first portion and a second portion, the second portion and the magnets are provided in plurality, the second portion is uniformly distributed in a circumferential direction of the first portion, and the magnets are provided at intervals from the second portion. The second portion clamps the magnet so that the magnet is fixed.

Preferably, the first part is provided with a plurality of mounting grooves in the circumferential direction, the second part is provided with a mounting part matched with the mounting grooves, the second part is mounted on the first part through the mounting part, and then a magnet is mounted, so that the mounting is performed in a staggered manner until the mounting in the circumferential direction is completed.

Preferably, the outer iron core is provided with a connecting hole, the support frame is provided with a connecting column, the connecting column is matched with the connecting hole, and the outer iron core is limited by being connected, so that the second part of the outer iron core and the magnet are fixed in the circumferential direction, and the second part is prevented from loosening.

Preferably, the support frame includes a plurality of reinforcing portions extending in a direction along which the predetermined axis is located. Therefore, the structure of the support frame is more stable and reliable, the fixing effect of the external iron core and the magnet is improved, and the structural strength of the rotor structure is improved.

Preferably, the support frame is injection molded on the outer surfaces of the outer iron core and the magnet. The material of the support frame may also be selected from a variety of materials such as nylon, PET or PBT materials.

Preferably, the bulge with V type groove dislocation set forms annular wave structure, and above-mentioned structural design makes the shock attenuation piece, plays better structure fastening effect, improves rotor structure and bears axial force and tangential force's ability.

Preferably, the bottom corresponding to the V-shaped groove on the support frame is provided with a first arc hole, the first arc hole is communicated with the V-shaped groove, the communication opening is smaller than the diameter of the first arc hole, a first connecting portion is formed at the periphery of the annular wave structure, and the capacity of the rotor structure for bearing axial force and tangential force is increased due to the arrangement of the first connecting portion.

Preferably, the bottom corresponding to the bulge on the inner iron core is provided with a second arc hole, the second arc hole is communicated with the V-shaped groove, the diameter of the communication port is smaller than that of the second arc hole, and the second connecting part formed on the inner side of the annular wave structure is matched with the first connecting part, so that the capability of the rotor structure for bearing axial force and tangential force is improved.

Compared with the prior art, the utility model has the following beneficial effects: according to the motor rotor, the outer iron core and the magnet are tightly connected through the injection molded support frame, so that vibration is prevented. Through setting up the shock attenuation piece for interior iron core passes through the support frame and is connected with outer iron core, and the first connecting portion of shock attenuation piece wears to establish in first arc downthehole, and the second connecting portion wears to establish downthehole at the second arc, thereby can be through connecting in the shock attenuation piece between with interior iron core and the outer iron core steadily, thereby improved rotor structure's structural strength.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of the overall structure of a motor rotor according to the present utility model.

Fig. 2 is a schematic view of an inner core of a motor rotor according to the present utility model.

Fig. 3 is an enlarged schematic view of the motor rotor of the present utility model at a in fig. 2.

Fig. 4 is a schematic view of an outer core of a motor rotor according to the present utility model.

Fig. 5 is a schematic view of a damping member of a motor rotor according to the present utility model.

Description of the figure: 1. a body structure; 2. an outer core; 21. a first portion; 211. a mounting groove; 22. a second portion; 221. a mounting part; 222. a connection hole; 3. a magnet; 4. a support frame; 41. a through hole; 42. a V-shaped groove; 43. a reinforcing part; 44. a first arcuate aperture; 5. an inner core; 51. a protruding portion; 52. a second arcuate aperture; 6. a shock absorbing member; 61. a first connection portion; 62. and a second connecting part.

Detailed Description

The present utility model is described in further detail below with reference to the accompanying drawings.

The following description is presented to enable one of ordinary skill in the art to practice the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the utility model defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.

It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. indicate orientations or positions based on the orientation or positional relationship shown in the drawings, which are merely for convenience in describing the present simplified description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus the above terms are not to be construed as limiting the present utility model.

It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.

Referring to fig. 1-5, a motor rotor includes a body structure 1, wherein the body structure 1 includes an outer core 2, a magnet 3, a support frame 4, an inner core 5 and a damping member 6, the outer core 2 and the magnet 3 are both mounted on the support frame 4, a through hole 41 is provided on the support frame 4, and a plurality of V-shaped grooves 42 are provided on the inner surface of the through hole 41; the inner iron core 5 is used for being connected with a shaft of the motor; the inner iron core 5 is arranged in the through hole 41 and is arranged at intervals with the body structure 1, and a plurality of protruding parts 51 surrounding the inner iron core 5 are arranged on the inner iron core 5; the protruding portion 51 is triangular, the damper 6 is made of a deformable material, the damper 6 is located between the support frame 4 and the inner core 5, the damper 6 includes a first connection portion 61 and a second connection portion 62, and the first connection portion 61 and the second connection portion 62 are connected with the support frame 4 and the inner core 5, respectively.

The outer core 2 includes a first portion 21 and a second portion 22, the second portion 22 and the magnets 3 are provided in plurality, the second portion 22 is uniformly distributed in the circumferential direction of the first portion 21, and the magnets 3 are provided at a distance from the second portion 22. The second portion 22 clamps the magnet 3 so that the magnet 3 is fixed.

The first portion 21 is provided with a plurality of mounting grooves 211 in the circumferential direction, the second portion 22 is provided with mounting portions 221 which are matched with the mounting grooves 211, and the second portion 22 is mounted on the first portion 21 through the mounting portions 221, and then one magnet 3 is mounted, so that the mounting is performed in a staggered manner until the mounting in the circumferential direction is completed.

The outer iron core 2 is provided with a connecting hole 222, the support frame 4 is provided with a connecting column, the connecting column is matched with the connecting hole 222, and the outer iron core 2 is limited by being connected, so that the second part 22 of the outer iron core 2 and the magnet are fixed in the circumferential direction, and the looseness of the second part 22 is prevented.

The support frame 4 includes a plurality of reinforcing portions 43 extending in a direction along which the predetermined axis is located. Therefore, the structure of the support frame 4 is more stable and reliable, the fixing effect of the external iron core 2 and the magnet 3 is improved, and the structural strength of the rotor structure is improved.

The support frame 4 is injection molded on the outer surfaces of the outer iron core 2 and the magnet 3. The material of the support frame 4 may also be selected from a variety of materials, such as nylon, PET or PBT materials. When the outer iron core 2 and the magnet 3 are injection molded, materials can enter the connecting holes 222 on the outer iron core 2, and connecting columns are formed after solidification, so that the support frame 4 can fix the outer iron core 2 more stably. The connecting hole 222 is a through hole 41, and the connecting post formed by injection molding can connect two ends of the supporting frame 4 by arranging the connecting hole 41 as the through hole, so that the strength of the rotor structure is further improved.

The shock-absorbing member 6 is an integral structure formed by solidification after glue injection, so that the shock-absorbing member has high strength and reduces the risk of cracking.

The protruding portion 5151 and the V-shaped groove 42 are arranged in a staggered manner to form a ring-shaped wave structure, as shown in fig. 5, the shock absorbing member 6 is made by the structural design, a good structure fastening effect is achieved, and the capability of bearing axial force and tangential force of the rotor structure is improved.

The bottom corresponding to the V-shaped groove 42 on the support frame 4 is provided with a first arc-shaped hole 44, the V-shaped groove 42 of the first arc-shaped hole 44 is communicated, the communication opening is smaller than the diameter of the first arc-shaped hole 44, a first connecting portion 61 is formed at the periphery of the annular wave structure, and the arrangement of the first connecting portion 61 increases the capacity of the rotor structure for bearing axial force and tangential force.

The bottom of the inner iron core 5 corresponding to the protruding part 51 is provided with a second arc hole 52, the second arc hole 52 is communicated with the V-shaped groove 42, the diameter of the communication port is smaller than that of the second arc hole 52, and a second connecting part 62 formed on the inner side of the annular wave structure is matched with the first connecting part 61, so that the capability of the rotor structure for bearing axial force and tangential force is improved.

The body structure 1, the body structure 1 comprises an outer iron core 2, a magnet 3 and a support frame 4, and the outer iron core 2 and the magnet 3 are both arranged on the support frame 4; the damping piece 6, the damping piece 6 is made of deformable material, the damping piece 6 includes the damping part, the damping part locates in interval between support frame 4 and the inner core 5; the damper 6 includes a first connecting portion 61 and a second connecting portion 62; the first connecting portion 61 and the second connecting portion 62 are arc-shaped columns, the first connecting portion 61 is arranged in the first arc-shaped hole 44 in a penetrating mode, and the second connecting portion 62 is arranged in the second arc-shaped hole 52 in a penetrating mode, so that the inner iron core 5 and the body structure 1 can be stably connected through the damping piece 6, the structural strength of the rotor structure is improved, and the problem that the damping effect and the structural strength of the rotor structure in the related art are difficult to achieve is solved.

It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are by way of example only and are not limiting. The objects of the present utility model have been fully and effectively achieved. The functional and structural principles of the present utility model have been shown and described in the examples and embodiments of the utility model may be modified or practiced without departing from the principles described.

Claims

1. A motor rotor, characterized in that: the novel magnetic iron core comprises a body structure (1), wherein the body structure (1) comprises an outer iron core (2), a magnet (3) and a support frame (4), the outer iron core (2) and the magnet (3) are both installed on the support frame (4), a through hole (41) is formed in the support frame (4), and a plurality of V-shaped grooves (42) are formed in the inner surface of the through hole (41);

an inner core (5) for connection with a shaft of the motor; the inner iron core (5) is arranged in the through hole (41) and is arranged at intervals with the body structure (1), and a plurality of protruding parts (51) (51) surrounding the inner iron core (5) are arranged on the inner iron core (5);

the damping piece (6), damping piece (6) are made by the deformable material, damping piece (6) are located between support frame (4) and interior iron core (5), damping piece (6) are including first connecting portion (61) and second connecting portion (62), first connecting portion (61) and second connecting portion (62) are connected with support frame (4) and interior iron core (5) respectively.

2. A motor rotor as set forth in claim 1, wherein: the outer iron core (2) comprises a first part (21) and a second part (22), wherein a plurality of magnets (3) and the second part (22) are arranged, the second part (22) is uniformly distributed in the circumferential direction of the first part (21), and the magnets (3) and the second part (22) are arranged at intervals.

3. A motor rotor as set forth in claim 2, wherein: the first part (21) is provided with a plurality of mounting grooves (211) in the circumferential direction, and the second part (22) is provided with mounting parts (221) which are matched with the mounting grooves (211).

4. A motor rotor according to claim 3, characterized in that: the outer iron core (2) is provided with a connecting hole (222), the support frame (4) is provided with a connecting column, and the connecting column is matched with the connecting hole (222).

5. A motor rotor as set forth in claim 4, wherein: the support frame (4) comprises a plurality of reinforcing parts (43) which are arranged in an extending mode along the direction of the preset axis.

6. A motor rotor as set forth in claim 5, wherein: the support frame (4) is formed by injection molding on the outer surfaces of the outer iron core (2) and the magnet (3).

7. A motor rotor as set forth in claim 6, wherein: the protruding parts (51, 51) and the V-shaped groove (42) are arranged in a staggered mode, and a ring-shaped wave structure is formed.

8. A motor rotor as set forth in claim 7, wherein: the support frame (4) is provided with a first arc-shaped hole (44) corresponding to the bottom of the V-shaped groove (42), the first arc-shaped hole (44) is communicated with the V-shaped groove (42), and the communicating opening is smaller than the diameter of the first arc-shaped hole (44).

9. A motor rotor as set forth in claim 8, wherein: the bottom of the inner iron core (5) corresponding to the protruding part (51) is provided with a second arc-shaped hole (52), the second arc-shaped hole (52) is communicated with the V-shaped groove (42), and the communicating opening is smaller than the diameter of the second arc-shaped hole (52).

10. A motor rotor as set forth in claim 9, wherein: the damping piece (6) is of an integrated structure formed by solidification after glue injection.