CN213027649U - Motors, Fans and Air Purifiers - Google Patents

Abstract

The utility model relates to a motor technical field provides a motor, fan and air purification device, the motor includes: a stator and a rotor; the stator, comprising: the motor comprises a bearing, a bearing retainer, a coil, a stator core and a circuit board; the bearing holder has: a cylindrical sleeve extending in an axial direction, and a disk portion extending in a radial direction from one end of the sleeve; the bearing is fixed on the shaft sleeve; the coil is wound on the stator core and connected with the circuit board; the stator core is fixed on the peripheral surface of the shaft sleeve; the circuit board is fixed on the disk part; the rotor, comprising: a rotor magnet, a rotor frame and a shaft; the rotor magnet is fixed on a rotor frame, and the rotor frame is fixed on a shaft; the bearing comprises a cylindrical part and a flange part extending from at least one end of the cylindrical part to the radial outer side; the flange portion abuts against an end portion of the sleeve. The utility model discloses can improve the impact resistance in the motor structure.

Description

Motors, Fans and Air Purifiers

technical field

The utility model relates to the technical field of motors, in particular to a motor, a fan and an air purification device.

Background technique

Electrical equipment such as air purifiers need to be equipped with fans to achieve air flow. The fan is driven by a motor to realize the fan operation. The motor is the most important component in the fan.

At present, the AC motor will be provided with a bearing 1 on the shaft, and the bearing is an oil bearing. Figure 1 is a cross-sectional view of the AC motor of the prior art; The motor shown in Figure 1 has two oil-impregnated bearings installed on two housings separately, and its axial impact resistance is high. However, because the two oil-impregnated bearings are installed on two parts, the two oil-impregnated bearings are assembled Poor concentricity will result in poor motor rotation and loud noise during rotation. In the motor shown in Figure 2, two oil-impregnated bearings are concentrated on the same bushing part. The oil-impregnated bearing is designed in a cylindrical style. , if the amount of interference is small, it is easy to cause axial movement after being pressed in; if the amount of interference is large, the deformation of the inner diameter of the bearing after being pressed into the shaft is large, resulting in large changes in the inner hole.

Utility model content

The utility model mainly solves the problem that the motor in the prior art installs two oil-impregnated bearings on two casings, the concentricity of the two oil-impregnated bearings is poor after assembly, and the two oil-impregnated bearings are concentrated on the same shaft sleeve part, If the interference is small, it is easy to cause axial movement after being pressed in; if the interference is large, the inner diameter deformation of the bearing after being pressed into the shaft is large. A motor, fan and air purification device are proposed. , The two oil-impregnated bearings are concentrated on the same bearing cage to improve the impact resistance performance of the motor structure. At the same time, the two oil-impregnated bearings are installed on the same bearing cage, which can be processed by subsequent reaming to improve the two oil-impregnated bearings. of concentricity.

The utility model provides a motor, comprising: a stator and a rotor;

The stator includes: a bearing, a bearing cage, a coil, a stator core and a circuit board; the bearing cage has a cylindrical shaft sleeve extending in the axial direction, and a circle extending radially from one end of the shaft sleeve the bearing is fixed on the shaft sleeve; the coil is wound on the stator iron core and connected with the circuit board; the stator iron core is fixed on the outer peripheral surface of the shaft sleeve; the circuit board is fixed on the said disc portion;

The rotor includes: a rotor magnet, a rotor frame and a shaft; the rotor magnet is fixed to the rotor frame, and the rotor frame is fixed to the shaft;

The bearing has a cylindrical portion, and a flange portion extending radially outward from at least one end of the cylindrical portion;

The flange portion is in contact with the end portion of the bushing.

Preferably, there are two bearings, and one end of each bearing is provided with a flange portion.

Preferably, the bearing is an oil-impregnated bearing.

Preferably, the two bearings are spaced apart in the axial direction.

Preferably, the bearing close to the side of the rotor frame is in axial contact with the rotor frame.

Preferably, the motor further has a snap ring, the snap ring is arranged on the side of the bearing close to the output end of the shaft;

The snap ring is in contact with the flange portion of the bearing.

Correspondingly, the present invention also provides a fan, which is the motor provided by any embodiment of the present invention.

Correspondingly, the present invention also provides an air purifying device, and the air purifying device includes the fan provided in any embodiment of the present invention.

The utility model provides a motor, a fan and an air purifying device. The motor of the utility model concentrates two oil-impregnated bearings on the same bearing cage, and at the same time, the oil-impregnated bearings are designed in a flanged style and fixed on the shaft. On both sides of the sleeve, the bearing will not move on the shaft sleeve, so as to improve the impact resistance of the motor structure; at the same time, the two oil-impregnated bearings are installed on the same bearing cage, which can be processed by subsequent reaming to improve the two. Concentricity of oil-impregnated bearings.

Description of drawings

Fig. 1 is the sectional view of the alternating current motor of prior art one;

Fig. 2 is the sectional view of the alternating current motor of prior art two;

3 is a cross-sectional view of the motor provided by the present invention.

Reference numerals: 1, bearing; 2, bearing cage; 3, rotor magnet; 4, rotor frame; 5, coil; 6, stator core; 7, circuit board; 8, shaft; 9, snap ring; 101, circle Cylinder part; 102, flange part; 201, shaft sleeve; 202, disc part.

Detailed ways

In order to make the technical problems solved by the present utility model, the technical solutions adopted and the technical effects achieved more clearly, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, the accompanying drawings only show the part but not the whole content related to the present invention.

Example 1

3 is a cross-sectional view of the motor provided by the present invention. As shown in FIG. 3 , the motor provided by the embodiment of the present invention includes: a stator and a rotor.

The rotor includes: a rotor magnet 3 , a rotor frame 4 and a shaft 8 ; the rotor magnet 3 is fixed to the rotor frame 4 , and the rotor frame 4 is fixed to the shaft 8 .

The stator includes: a bearing 1 , a bearing holder 2 , a coil 5 , a stator core 6 and a circuit board 7 ; the bearing holder 2 has a cylindrical shaft sleeve 201 extending in the axial direction, and a cylindrical shaft sleeve 201 extending from the shaft sleeve 201 One end of the disc portion 202 extending radially; the bearing 1 is fixed on the shaft sleeve 201; the coil 5 is wound around the stator core 6 and connected to the circuit board 7; the stator core 6 is fixed on the The outer peripheral surface of the shaft sleeve 201 ; the circuit board 7 is fixed on the disc portion 202 .

The bearing 1 has a cylindrical portion 101 and a flange portion 102 extending radially outward from at least one end of the cylindrical portion 101 ; the flange portion 102 is in contact with the end portion of the sleeve 201 . In this embodiment, the flange portion 102 is provided at the end of the bearing 1, and the flange portion 102 is brought into contact with the end portion of the sleeve 201 to restrict the movement of the bearing 1 in the axial direction, so that the bearing 1 can be axially moved. fixed. There are two bearings 1 , and one end of each bearing 1 is provided with a flange portion 102 . By arranging two bearings 1 and fixing the two bearings 1 on the same bushing 201 , the concentricity of the bearings 1 can be improved, the rotation characteristics of the motor can be satisfied, and the quality of the motor can be improved. The two bearings 1 are arranged at intervals in the upward direction of the shaft 8, which can reduce the contact area between the shaft 8 and the bearing 1, and at the same time, it is more convenient to install the bearing 1 on both ends of the shaft sleeve 201, and the assembly efficiency is improved. In this embodiment, the bearing 1 is an oil-impregnated bearing, and by using the oil-impregnated bearing, the production cost of the motor can be reduced compared with the ball bearing. Oil-impregnated bearings are designed with flanges so that the bearing does not move on the sleeve.

In the above solution, the bearing 1 on the side close to the rotor frame 4 is in axial contact with the rotor frame 4; the bearing 1 is fixed by the rotor frame 4, which reduces the use of components, reduces the cost, and can improve the assembly efficiency. The motor also has a snap ring 9 . The snap ring 9 is arranged on the side of the bearing 1 close to the output end of the shaft 8 ; the snap ring 9 is in contact with the flange portion 102 of the bearing 1 . In this embodiment, the snap ring 9 is provided to prevent the bearing 1 from moving in the axial direction, thereby improving the assembly efficiency of the motor.

The motor of the utility model gathers two oil-impregnated bearings on the same bearing cage, and at the same time, the oil-impregnated bearings are designed in a flanged style and fixed on both sides of the shaft sleeve, so that the bearings will not move on the shaft sleeve. , in order to improve the impact resistance performance of the motor structure; at the same time, the two oil-impregnated bearings are installed on the same bearing cage, and the concentricity of the two oil-impregnated bearings can be improved by subsequent reaming.

Embodiment 2

An embodiment of the present invention provides a fan, and the fan includes the motor provided by any embodiment of the present invention.

Embodiment 3

The embodiment of the present invention provides an air purification device, and the air purification device includes the fan provided by any embodiment of the present invention.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, but not to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that : It modifies the technical solutions recorded in the foregoing embodiments, or performs equivalent replacements to some or all of the technical features thereof, and does not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the various embodiments of the present invention.

Claims (8)

1. A motor, comprising: a stator and a rotor; The stator includes: a bearing, a bearing cage, a coil, a stator core and a circuit board; the bearing cage has a cylindrical shaft sleeve extending in the axial direction, and a circle extending radially from one end of the shaft sleeve the bearing is fixed on the shaft sleeve; the coil is wound on the stator iron core and connected with the circuit board; the stator iron core is fixed on the outer peripheral surface of the shaft sleeve; the circuit board is fixed on the said disc portion; The rotor includes: a rotor magnet, a rotor frame and a shaft; the rotor magnet is fixed to the rotor frame, and the rotor frame is fixed to the shaft; It is characterized by: The bearing has a cylindrical portion, and a flange portion extending radially outward from at least one end of the cylindrical portion; The flange portion is in contact with the end portion of the bushing. 2 . The motor according to claim 1 , wherein the number of the bearings is two, and one end of each bearing is provided with a flange portion. 3 . 3. The motor of claim 1, wherein the bearing is an oil-impregnated bearing. 4. The motor according to claim 2, wherein the two bearings are arranged spaced apart in the axial direction. 5 . The motor of claim 2 , wherein the bearing on the side close to the rotor frame is in axial contact with the rotor frame. 6 . 6 . The motor according to claim 5 , wherein the motor further has a snap ring, the snap ring is arranged on a side of the bearing close to the output end of the shaft; 6 . The snap ring is in contact with the flange portion of the bearing. 7. A fan, characterized in that the fan comprises the motor according to any one of claims 1 to 6. 8 . An air purification device, characterized in that, the air purification device comprises the fan of claim 7 .

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