CN216554640U

CN216554640U - Fan

Info

Publication number: CN216554640U
Application number: CN202122750670.3U
Authority: CN
Inventors: 李惠军; 王祥
Original assignee: Nidec Dongguan Co Ltd
Current assignee: Nideco Electric Dongguan Co ltd
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2022-05-17
Anticipated expiration: 2031-11-11

Abstract

The utility model relates to the technical field of fans, and provides a fan which is provided with: a casing, an impeller accommodated in the casing, and a motor driving the impeller to rotate; the motor has a stator and a rotor; the stator has a stator core assembly and a circuit board; the impeller is fixedly connected with the rotor; the stator further has a bearing sleeve and a first elastic member; the bearing sleeve is arranged in the center of one axial side of the shell and extends along the axial direction; in the radial direction of the motor, the first elastic component is positioned between the bearing sleeve and the stator core assembly. The utility model can absorb the impact force from the radial direction and the axial direction, reduce the vibration quantity of the motor and prevent the vibration of the motor from being directly transmitted to the motor.

Description

Fan

Technical Field

The utility model relates to the technical field of fans, in particular to a fan.

Background

The fan is generally used for heat dissipation, and is widely applied to various electric appliances in daily work and life, such as refrigerators, washing machines, air conditioners, clocks, and the like.

In traditional fan structure, through the bearing bracket installation stator, the bearing bracket is fixed by gluing with the stator, leads to there being the very big problem of vibration in the motor, and the vibration of motor is direct to be conducted on the customer's real machine by the tower portion, leads to customer's real machine to vibrate badly.

SUMMERY OF THE UTILITY MODEL

The utility model mainly solves the technical problem that the motor has large vibration due to the fact that the stator is installed through the bearing frame and the stator are fixed through glue in the traditional fan structure, and provides the fan which can absorb impact force from the radial direction and the axial direction, reduce the vibration quantity of the motor and prevent the vibration of the motor from being directly transmitted to the motor.

The present invention provides a fan, comprising:

a housing;

an impeller housed within the casing;

a motor for driving the impeller to rotate, the motor having a stator and a rotor; the stator has a stator core assembly and a circuit board;

the impeller is fixedly connected with the rotor;

the stator further has a bearing sleeve and a first elastic member;

the bearing sleeve is arranged in the center of one axial side of the shell and extends along the axial direction;

in the radial direction of the motor, the first elastic component is positioned between the bearing sleeve and the stator core assembly.

Preferably, the axial height of the first elastic member is greater than the axial height of the stator core assembly.

Preferably, the axial height of the bearing sleeve is greater than the axial height of the stator core assembly.

Preferably, one end of the rotating shaft close to the circuit board is provided with a second elastic component.

Preferably, a C-shaped ring is arranged at the end part of the rotating shaft close to the circuit board, and the C-shaped ring is arranged on the axial outer side of the second elastic part.

Preferably, the radial outer side of the bearing sleeve is provided with a first step surface, and a first elastic component and a stator core component are fixed on the first step surface.

Preferably, a second step surface is arranged at one end, close to the circuit board, of the radial inner side of the bearing sleeve, and a third step surface is arranged at one end, far away from the circuit board, of the bearing sleeve.

Preferably, the second step surface is provided with a first bearing, and the third step surface is provided with a second bearing.

According to the fan provided by the utility model, the first elastic component is additionally arranged between the bearing sleeve and the stator iron core component, the bearing sleeve and the stator iron core component are flexibly connected, the impact force from the radial direction and the axial direction can be absorbed, the vibration quantity of the motor is reduced, and the vibration of the motor is prevented from being directly transmitted to the motor. By absorbing the axial and radial forces, the motor vibrations will largely cancel the vibrations, thereby enabling the customer real machine vibration problem to be solved.

Drawings

FIG. 1 is a schematic structural diagram of a fan according to the present invention;

fig. 2 is a sectional view of a fan provided by the present invention.

Reference numerals: 1. a housing; 2. an impeller; 3. a stator core assembly; 4. a circuit board; 5. a bearing sleeve; 6. a first elastic member; 7. a rotating shaft; 8. a second elastic member; 9. c, buckling; 10. a first bearing; 11. A second bearing.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings.

As shown in fig. 1-2, the fan provided by the embodiment of the present invention includes: a casing 1, an impeller 2 accommodated in the casing 1, and a motor for driving the impeller 2 to rotate.

The motor has a stator and a rotor; the stator has a stator core assembly 3 and a circuit board 4; the impeller 2 is fixedly connected with the rotor.

The stator also has a bearing sleeve 5 and a first elastic member 6; the bearing sleeve 5 is arranged in the center of one axial side of the machine shell 1 and extends along the axial direction; in the radial direction of the motor, the first elastic member 6 is located between the bearing sleeve 5 and the stator core assembly 3. The first elastic member 6 may be a rubber sleeve.

The utility model is provided with the bearing sleeve 5, and the connection between the bearing sleeve 5 and the shell 1 is changed from the original rigid connection into the flexible connection. The impact force from the radial direction and the axial direction can be absorbed by adding the first elastic member 6, and the vibration amount of the motor can be reduced.

The axial height of the first elastic member 6 is greater than the axial height of the stator core assembly 3. The axial height of the bearing sleeve 5 is greater than that of the stator core assembly 3, so that the first elastic component 6 can effectively reduce noise.

Furthermore, a second elastic component 8 is arranged at one end of the rotating shaft 7 close to the circuit board 4. The end part of the rotating shaft 7 close to the circuit board 4 is provided with a C-shaped ring 9, and the C-shaped ring 9 is arranged on the axial outer side of the second elastic part 8. The second elastic member 8 may employ a spring.

In addition, the radial outside of bearing sleeve 5 is provided with first step face, fixed first elastomeric element 6 and stator core subassembly 3 on the first step face. The bearing sleeve 5 forms a first step surface to limit the moving position of the stator.

And a second step surface is arranged at one end of the radial inner side of the bearing sleeve 5 close to the circuit board 4, and a third step surface is arranged at one end far away from the circuit board 4. The second step surface is provided with a first bearing 10, and the third step surface is provided with a second bearing 11.

According to the fan, the first elastic component 6 is additionally arranged between the bearing sleeve 5 and the stator core component 3, so that the first elastic component 6 can absorb impact force from the radial direction and the axial direction, the vibration quantity of the motor is reduced, and the vibration of the motor is prevented from being directly transmitted to the motor. The second elastic element 8 will also absorb a part of the axial force. By absorbing the axial and radial forces, the motor vibrations will largely cancel the vibrations, thereby allowing the client real machine vibration problem to be solved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: modifications of the technical solutions described in the embodiments or equivalent replacements of some or all technical features may be made without departing from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fan, comprising:

a housing (1);

an impeller (2) housed in the casing (1);

a motor driving the impeller (2) in rotation, the motor having a stator and a rotor; the stator has a stator core assembly (3) and a circuit board (4);

the impeller (2) is fixedly connected with the rotor;

the method is characterized in that:

the stator further has a bearing sleeve (5) and a first elastic member (6);

the bearing sleeve (5) is arranged in the center of one axial side of the shell (1) and extends along the axial direction;

in the radial direction of the motor, the first elastic component (6) is positioned between the bearing sleeve (5) and the stator core component (3).

2. A fan according to claim 1, characterised in that the axial height of the first elastic member (6) is greater than the axial height of the stator core assembly (3).

3. The fan according to claim 1, characterized in that the axial height of the bearing sleeve (5) is greater than the axial height of the stator core assembly (3).

4. The fan as claimed in claim 1, further comprising: a rotating shaft (7);

and a second elastic component (8) is arranged at one end of the rotating shaft (7) close to the circuit board (4).

5. The fan according to claim 4, characterized in that the end of the shaft (7) close to the circuit board (4) is provided with a C-ring (9), the C-ring (9) being axially outside the second elastic member (8).

6. The fan according to claim 1, wherein a radially outer side of the bearing sleeve (5) is provided with a first step surface on which the first elastic member (6) and the stator core assembly (3) are fixed.

7. The fan according to claim 1 or 6, wherein the radially inner side of the bearing sleeve (5) is provided with a second step surface at an end close to the circuit board (4) and a third step surface at an end remote from the circuit board (4).

8. The fan of claim 7, wherein the second step face mounts a first bearing (10) and the third step face mounts a second bearing (11).