CN216356292U - Motor and hair-dryer - Google Patents

Abstract

The utility model discloses a motor and a blower, wherein the motor comprises a shell, a bearing, a rotor and a stator, a bearing mounting seat and a mounting hole extending along the axial direction are arranged in the shell, the bearing mounting seat is provided with a bearing mounting hole extending along the axial direction and communicated with the mounting hole, and at least one blind hole and a vent hole which are arranged around the bearing mounting hole, the vent hole is communicated with the mounting hole, and the bearing is mounted in the bearing mounting hole; the rotor is at least partially assembled in the assembling hole, extends along the axial direction and extends into the bearing mounting hole to be connected with the bearing; the stator is assembled in the assembling hole and sleeved outside the rotor. The utility model can avoid the generation of howling or periodic abnormal sound during running and improve the use experience.

Description

Motor and hair-dryer

Technical Field

The utility model relates to the technical field of motors, in particular to a motor and a blower with the motor.

Background

The motor is used as a power source, can provide corresponding power, is an electromagnetic mechanical device for realizing energy conversion and transmission by utilizing the interaction of electricity and magnetism, and is widely applied. The motor is an indispensable component of the hair dryer. With the development of miniaturization and portability of the electric hair dryer, the motor is also miniaturized. When the size of the motor is small to a certain extent, its natural frequency is relatively difficult to adjust. And with the increase of the rotating speed of the motor, usually up to 110000rpm, the motor is easy to resonate, so that squeaking or periodic abnormal sound is generated when the motor runs, and the use experience is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a motor which can avoid squeaking or periodic abnormal sounds generated during operation and improve use experience, and also provides a hair drier with the motor.

To achieve the above object, the present invention provides a motor including:

the bearing mounting seat is provided with a bearing mounting hole extending along the axial direction and communicated with the mounting hole, and at least one blind hole and an air vent are arranged around the bearing mounting hole and communicated with the mounting hole;

the bearing is assembled in the bearing mounting hole;

the rotor is at least partially assembled in the assembling hole, extends along the axial direction and extends into the bearing mounting hole to be connected with the bearing;

the stator is assembled in the assembling hole and sleeved outside the rotor.

Preferably, the hole wall of the bearing mounting hole is provided with at least one accommodating groove for accommodating the viscose.

Preferably, the accommodating groove extends in the axial direction.

Preferably, the bearing mounting seat has a first end face and a second end face which are oppositely arranged, the first end face is inwards recessed along the axial direction to form at least one blind hole, and the second end face is inwards recessed along the axial direction to form at least one blind hole.

Preferably, the stator includes a stator core and an insulating member disposed at an end of the stator core, the stator core has a plurality of stator teeth, the insulating member extends in an axial direction to form a plurality of bosses, each boss corresponds to one stator tooth, and a center line of the stator tooth in a radial direction and a center line of the boss in the axial direction are not on the same plane.

Preferably, the stator further comprises a bearing plate connected with the boss, and an electric connecting piece is arranged on the bearing plate

Preferably, the motor further comprises a fan blade, the fan blade is connected with the rotor, and the bearing mounting seat is arranged between the fan blade and the stator.

Preferably, the casing is provided with an air duct extending in the axial direction.

Preferably, two bearings are arranged in the bearing mounting hole, and an elastic part abutting against the bearings is arranged between the two bearings.

The utility model also discloses a hair drier which comprises the motor.

The utility model has the beneficial effects that:

(1) according to the utility model, the blind holes are arranged, so that the resonance area of the motor can be adjusted, the generation of resonance is avoided, further, the severe vibration of the motor during the operation is eliminated, the generation of squeaking or periodic abnormal sound during the operation of the motor is avoided, and the use experience is improved.

(2) The utility model can keep air flowing by arranging the vent holes so as to cool the stator winding on the stator, avoid the temperature rise of the motor, prolong the service life of the motor and ensure that the motor is more reliable.

Drawings

FIG. 1 is a schematic cross-sectional view of an electric machine;

FIG. 2 is a perspective view of the housing;

fig. 3 is a schematic cross-sectional view of the housing.

Reference numerals:

10. the air conditioner comprises a machine shell, 11, assembly holes, 12, a bearing mounting seat, 121, a bearing mounting hole, 122, a blind hole, 123, a vent hole, 13, an air duct, 124, a containing groove, 20, a bearing, 30, a rotor, 40, a stator, 41, a stator core, 42, an insulating piece, 421, a boss, 43, a bearing plate, 44, an electric connecting piece, 50, an elastic piece, 60 and an air duct.

Detailed Description

The technical solution of the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention.

The motor disclosed by the utility model can avoid squeaking or periodic abnormal sounds generated during running and improve the use experience.

Referring to fig. 1 and 2, the motor disclosed in the present invention includes a housing 10, a bearing 20, a rotor 30, and a stator 40, wherein the housing 10 is used for assembling the bearing 20, the stator 40, and the rotor 30, and has a mounting hole 11 and a bearing mount 12 therein, the mounting hole 11 is extended in an axial direction, the mounting hole 11 is used for mounting the stator 40 and the rotor 30, and the bearing mount 12 is used for mounting the bearing 20. The bearing mounting seat 12 is provided with a bearing mounting hole 121, the bearing mounting hole 121 extends along the axial direction and is communicated with the assembly hole 11, and the bearing 20 is mounted in the bearing mounting hole 121. The rotor 30 is at least partially fitted in the fitting hole 11, and the rotor 30 extends in the axial direction and protrudes into the bearing mounting hole 121 to be fixedly coupled with the bearing 20. The stator 40 is fitted in the fitting hole 11 and sleeved outside the rotor 30.

In this embodiment, two bearings 20 are disposed in the bearing 20 installation chamber, an elastic member 50 is disposed between the two bearings 20, and two ends of the elastic member 50 respectively abut against the bearings 20 to generate an acting force on the bearings 20, so that the bearings 20 can be firmly assembled in the bearing installation holes 121.

Referring to fig. 2 and 3, in order to avoid the occurrence of squeal or periodic abnormal sounds during the operation of the motor, the bearing mounting seat 12 is provided with a plurality of blind holes 122 extending along the axial direction, and the blind holes 122 are distributed at intervals around the bearing mounting hole 121. In practice, several blind holes 122 are preferably evenly distributed around the bearing mounting hole 121, and the number and depth of the blind holes 122 can be set according to actual requirements to adjust the resonance area of the motor. Through setting up blind hole 122, can adjust the resonance region of motor, avoid resonant production, and then eliminate the violent vibration of motor operation, produce the sound of howling or periodic anomaly when avoiding the motor operation, improve and use experience. Meanwhile, the bearing mounting seat 12 provided with the blind hole 122 can play a role in shock absorption and sound absorption relative to the bearing mounting seat 12 without the blind hole 122 (i.e. the bearing mounting seat 12 with a solid structure), so as to reduce vibration and noise during the operation of the motor.

In this embodiment, the bearing mounting seat 12 includes a first end surface and a second end surface that are oppositely disposed, and the first end surface and the second end surface are both recessed inwards to form at least one blind hole 122, that is, the blind holes 122 are disposed on both sides of the bearing mounting seat 12. Of course, in other embodiments, the blind hole 122 may be disposed on any side of the bearing mounting seat 12, and may be disposed according to actual requirements.

In order to reduce the temperature generated when the motor operates, the bearing mounting base 12 is further provided with at least one vent hole 123, and the vent hole 123 is communicated with the assembly hole 11, so that air can enter the assembly hole 11 through the vent hole 123 to keep the air flowing, and further the stator 40 winding on the stator 40 can be cooled, thereby avoiding the temperature rise of the motor, prolonging the service life of the motor and enabling the motor to be more reliable.

According to the utility model, the blind holes 122 and the vent holes 12 are arranged on the bearing mounting seat 12, so that the vibration and noise of the motor can be reduced, the weight of the motor can be reduced, and the motor can meet the requirement of light weight.

As shown in fig. 2, at least one receiving groove 124 is formed on the wall of the bearing mounting hole 121, and the adhesive is disposed in the receiving groove 124. In practice, after the bearing 20 is assembled in the bearing mounting hole 121, it is stably mounted in the bearing mounting hole 121 by the adhesive in the receiving groove 124.

In this embodiment, the accommodating groove 124 extends along the axial direction, and in other embodiments, the accommodating groove 124 extends along the circumferential direction, which can be selected according to actual requirements.

As shown in fig. 1, the stator 40 includes a stator core 41 and an insulator 42 disposed at an end of the stator core 41, the stator core 41 has a plurality of stator teeth (not shown), and a stator slot (not shown) is formed between two adjacent stator teeth. In order to separate the leading wires from the tail and the head of each winding and avoid short circuit caused by the leading wires from the head to the tail when the motor operates, the insulating member 42 extends along the axial direction to form a plurality of bosses 421, each boss 421 corresponds to one stator tooth, and each boss 421 and the corresponding stator tooth are in an asymmetric structure, that is, the central line of the stator tooth along the radial direction is not on the same plane as the central line of the boss 421 along the axial direction. By adopting the asymmetric structural design, the problem of motor failure caused by short circuit of the head and tail leads when the motor operates can be avoided.

Further, the stator 40 further includes a supporting plate 43 connected to the boss 421, an electrical connector 44 is disposed on the supporting plate 43, and the electrical connector 44 is used for connecting to an external power source. Electrical connections 44 such as connectors and the like.

As shown in fig. 1, the motor further includes a fan blade 60, the fan blade 60 is connected to the rotor 30, a bearing mounting seat is disposed between the fan blade 60 and the stator 40, and the rotor 30 can drive the fan blade 60 to rotate in the rotation process to generate wind.

Further, the casing 10 is provided with an air duct 13, the air duct 13 extends along the axial direction, and the air duct 13 is used for allowing the wind generated by the fan blades 60 to pass through.

The utility model also discloses a hair drier which is provided with the motor.

According to the utility model, by arranging the blind holes 122, the resonance area of the motor can be adjusted, the generation of resonance is avoided, further, the severe vibration of the motor during the operation is eliminated, the generation of squeaking or periodic abnormal sound during the operation of the motor is avoided, and the use experience is improved. Meanwhile, through setting up the air vent 123, can make the air keep flowing to carry out cooling treatment to the stator 40 winding on the stator 40, avoid the motor to heat up, prolong the life of motor, make the motor more reliable.

Therefore, the scope of the present invention should not be limited to the disclosure of the embodiments, but includes various alternatives and modifications without departing from the scope of the present invention, which is defined by the claims of the present patent application.

Claims (10)

1. An electric machine, characterized in that the electric machine comprises:

the bearing mounting seat is provided with a bearing mounting hole extending along the axial direction and communicated with the mounting hole, and at least one blind hole and an air vent are arranged around the bearing mounting hole and communicated with the mounting hole;

the bearing is assembled in the bearing mounting hole;

the rotor is at least partially assembled in the assembling hole, extends along the axial direction and extends into the bearing mounting hole to be connected with the bearing;

the stator is assembled in the assembling hole and sleeved outside the rotor.

2. The motor of claim 1, wherein the wall of the bearing mounting hole is provided with at least one accommodating groove for accommodating the adhesive.

3. The electric machine of claim 2 wherein the receiving slot extends in an axial direction.

4. The electric machine of claim 1 wherein said bearing mount has first and second oppositely disposed end faces, said first end face being recessed inwardly in an axial direction to form at least one said blind hole, said second end face being recessed inwardly in an axial direction to form at least one said blind hole.

5. The electric machine of claim 1, wherein the stator comprises a stator core and an insulator disposed at an end of the stator core, the stator core has a plurality of stator teeth, the insulator extends in the axial direction to form a plurality of bosses, each boss corresponds to a stator tooth, and a center line of the stator tooth in the radial direction is not in the same plane as a center line of the boss in the axial direction.

6. The electric machine of claim 5 wherein the stator further comprises a support plate coupled to the boss, the support plate having an electrical connection thereon.

7. The motor of claim 1, further comprising a fan blade, wherein the fan blade is connected to the rotor, and the bearing mount is disposed between the fan blade and the stator.

8. The electric machine of claim 7, wherein the housing has an air channel extending in an axial direction.

9. The motor of claim 1, wherein two of said bearings are disposed in said bearing mounting hole, and an elastic member abutting said bearings is disposed between said two bearings.

10. A hair dryer, characterized in that it comprises a motor as claimed in any one of claims 1 to 9.

Images