CN215817864U

CN215817864U - Motor rotor and birotor motor

Info

Publication number: CN215817864U
Application number: CN202121356967.5U
Authority: CN
Inventors: 杜敏吉; 李福益; 袁彬彬; 黎钦银
Original assignee: Yibei Technology Dongguan Co ltd
Current assignee: Yibei Technology Dongguan Co ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2022-02-11
Anticipated expiration: 2031-06-17

Abstract

The utility model discloses a motor rotor, which comprises a rotating shaft, an iron core and a coil, wherein the iron core is arranged on the rotating shaft, the coil is wound on the iron core, the end part of the coil protrudes out of the end part of the iron core, and the motor rotor also comprises a fixing piece which is arranged at the end part of the iron core so as to fix the end part of the coil relative to the iron core. The motor rotor can prolong the service life of the motor. In addition, the utility model also discloses a double-rotor motor with long service life.

Description

Motor rotor and birotor motor

Technical Field

The present disclosure relates to motors, and particularly to a motor rotor and a dual-rotor motor.

Background

As shown in fig. 1, an outer rotor 200 of a conventional dual-rotor motor is composed of a rotating shaft 201, an iron core 202 and an enameled coil 203, wherein the iron core 202 is fixed on the rotating shaft 201, the iron core 202 has a plurality of slots surrounding a central axis, and the enameled coil 203 is wound in the slots of the iron core 202 to finally form a rotor. Since the enameled coil 203 passes through one end of the slot of the core and the other end, the two ends 203a of the enameled coil 203 extend out of the two ends of the slot of the core 202. After the motor starts, the rotor can rotate at a high speed, at this moment, because the end parts of the enameled coils 203 extending out of the two ends of the wire slot are not supported by the iron core 202, the enameled coils are bent under the action of centrifugal force, and after the enameled coils work at high temperature for a long time, the enameled coils 203 are easy to fatigue crack to expose copper wires, so that short circuit occurs between the coils, the motor is burnt out, and the service life of the motor is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a motor rotor capable of prolonging the service life of a motor.

Another object of the present invention is to provide a dual-rotor motor having a long service life.

In order to achieve the above object, the rotor of an electric motor according to the present invention includes a rotating shaft, an iron core, and a coil, wherein the iron core is disposed on the rotating shaft, the coil is wound on the iron core, and an end of the coil protrudes out of an end of the iron core.

Compared with the prior art, the end part of the iron core is provided with the fixing piece, and the fixing piece can fix the end part of the coil relative to the iron core, so that the influence of centrifugal force on the rotor during high-speed rotation is overcome, the end part of the coil is ensured not to bend, the paint coating fatigue crack is avoided, the short circuit is prevented, and the service life of the motor can be effectively prolonged.

Preferably, the fixing member is fixed between the rotating shaft and an end of the coil.

Specifically, the rotating shaft is provided with a hollow barrel, the iron core is fixed on the inner wall of the barrel, and the fixing piece is fixed between the inner wall of the barrel and the end part of the coil.

Preferably, the fixing member is fixed between an end of the core and an end of the coil.

Preferably, the fixing member is an insulating member. Thus, the coil can be fixed, and the insulation between the coils can be further enhanced to prevent short circuit.

Preferably, the fixing member is glue which can be transformed from a liquid state to a solid state. Therefore, the coil can be quickly fixed during assembly, and the assembly convenience is improved.

Specifically, the glue is resin.

Preferably, the fixing member is a fixing bracket, and the fixing bracket can restrain and fix the end portion of the coil.

A double-rotor motor comprises a base, a first rotor, a second rotor and a brake, wherein the first rotor is a motor rotor; the first rotor is rotationally arranged in the base, and a rotating shaft of the first rotor is connected with the brake; the second rotor is rotatably arranged in the first rotor, and an output shaft extends out of the front end of the base.

Preferably, the dual-rotor motor further comprises a heat dissipation fan blade, the heat dissipation fan blade is located in the base and fixed to the outer side of the first rotor, an air inlet is formed in the front end of the base, and an air outlet is formed in the rear end of the base.

Drawings

Fig. 1 is a structural view of a related art double rotor motor.

Fig. 2 is a structural view of a rotor of the motor of the present invention.

Fig. 3 is a structural view of a double-rotor motor of the present invention.

Detailed Description

In order to explain technical contents, structural features, and effects achieved by the present invention in detail, the following detailed description is given with reference to the embodiments and the accompanying drawings.

As shown in fig. 2, the motor rotor 1 of the present invention includes a rotating shaft 11, an iron core 12, and a coil 13, wherein the iron core 12 is disposed on the rotating shaft 11, the coil 13 is wound on the iron core 12, and an end 13a of the coil 13 protrudes out of an end of the iron core 12, and further includes a fixing member 14, and the fixing member 14 is disposed on an end of the iron core 12 so as to fix the end of the coil 13 relative to the iron core 12.

Referring to fig. 2, the fixing member 14 is fixed between the rotating shaft 11 and the end 13a of the coil 13. Specifically, the rotating shaft 11 is provided with a hollow cylinder 111, the iron core 12 is fixed on the inner wall of the cylinder 111, and the fixing member 14 is fixed between the inner wall of the cylinder 111 and the end 13a of the coil 13. Of course, the fixing member 14 may be fixed between the end of the core 12 and the end 13a of the coil 13. The fixing member 14 is an insulating member. This makes it possible to fix the coils 13, and also to further enhance the insulation between the coils 13 to prevent short-circuiting. The fixing member 14 of this embodiment is a glue that can be transformed from a liquid state to a solid state. The glue is made of resin. This makes it possible to quickly fix the coil 13 during assembly, improving the ease of assembly.

Compared with the prior art, the end part of the iron core 12 is provided with the fixing piece 14, and the fixing piece 14 can fix the end part 13a of the coil 13 relative to the iron core 12, so that the influence of centrifugal force on the rotor during high-speed rotation is overcome, the end part 13a of the coil 13 is ensured not to be bent, the fatigue cracking of the coating is avoided, the short circuit is prevented, and the service life of the motor can be effectively prolonged.

In addition, the fixing member 14 may be a fixing bracket, and the fixing bracket is fixed to the end of the iron core 12 or the inner wall of the cylinder 111, and the coil 13 is positioned by being sleeved with the fixing bracket, so that the fixing bracket may also restrain and fix the end of the coil 13.

As shown in fig. 3, the dual-rotor motor 100 disclosed in this embodiment includes a first rotor, a second rotor 2, a base 3, a brake 4, and a heat dissipation fan blade 5, where the first rotor is the motor rotor 1; the first rotor is rotationally arranged in the base 3, and the rotating shaft of the first rotor is connected with the brake 4; the second rotor 2 is rotatably arranged in the first rotor and an output shaft extends out of the front end of the base 3. The central axis of the first rotor is coaxial with the central axis of the second rotor 2. The heat dissipation fan blade 5 is located in the machine base 3 and fixed on the outer side of the first rotor, an air inlet 31 is formed in the front end of the machine base 3, an air outlet 32 is formed in the rear end of the machine base 3, and the heat dissipation fan blade 5 can drive air to enter the machine base 3 from the air inlet 31 and be discharged from the air outlet 32.

The operation principle of the motor rotor 1 and the dual-rotor motor 100 of the present invention is well known to those skilled in the art, and will not be described in detail herein.

The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the present invention, which is therefore intended to cover all equivalent changes and modifications within the scope of the present invention.

Claims

1. The utility model provides an electric motor rotor, includes pivot, iron core and coil, the iron core set up in the pivot, the coil is around locating the iron core, the tip of coil stretches out suddenly the tip of iron core, its characterized in that: the coil fixing structure comprises a coil and is characterized by further comprising a fixing piece, wherein the fixing piece is arranged at the end part of the iron core so that the end part of the coil is fixed relative to the iron core.

2. The electric machine rotor as recited in claim 1, wherein: the fixing piece is fixed between the rotating shaft and the end part of the coil.

3. The electric machine rotor as recited in claim 2, wherein: the rotating shaft is provided with a hollow barrel, the iron core is fixed on the inner wall of the barrel, and the fixing piece is fixed between the inner wall of the barrel and the end part of the coil.

4. The electric machine rotor as recited in claim 1, wherein: the fixing piece is fixed between the end of the iron core and the end of the coil.

5. The electric machine rotor as recited in claim 1, wherein: the fixing piece is an insulating piece.

6. An electric machine rotor as claimed in any of claims 1 to 5, characterized in that: the fixing member is glue which can be transformed from a liquid state to a solid state.

7. The electric machine rotor as recited in claim 6, wherein: the glue is resin.

8. An electric machine rotor as claimed in any of claims 1 to 5, characterized in that: the fixing piece is a fixing support which can restrain and fix the end part of the coil.

9. A double-rotor motor is characterized in that: the motor comprises a base, a first rotor, a second rotor and a brake, wherein the first rotor is the motor rotor of any one of claims 1 to 8; the first rotor is rotationally arranged in the base, and a rotating shaft of the first rotor is connected with the brake; the second rotor is rotatably arranged in the first rotor, and an output shaft extends out of the front end of the base.

10. The dual rotor motor of claim 9, wherein: the double-rotor motor further comprises heat dissipation fan blades, the heat dissipation fan blades are located in the base and fixed on the outer side of the first rotor, an air inlet is formed in the front end of the base, and an air outlet is formed in the rear end of the base.