CN214837935U

CN214837935U - Bearing structure of fan starting box

Info

Publication number: CN214837935U
Application number: CN202121617839.1U
Authority: CN
Inventors: 叶伟尧
Original assignee: Ningbo Benyuan Electric Appliance Co ltd
Current assignee: Ningbo Benyuan Electric Appliance Co ltd
Priority date: 2021-07-15
Filing date: 2021-07-15
Publication date: 2021-11-23
Anticipated expiration: 2031-07-15

Abstract

The utility model belongs to the technical field of the fan, a fan starts bearing arrangement of box is related to, fan starts the box and is provided with bearing frame and torsional spring seat including starting the cover, start to install between cover and the torsional spring seat and start the torsional spring, the front end of torsional spring seat is provided with the starting shaft of being connected with motor stator hub, the bearing frame is built-in to be equipped with the cover and is established at the epaxial bearing of start, the bearing includes annular bearing base, be provided with the radial hole more than two in the bearing base, be provided with radial elastic component in the radial hole, radial elastic component is including radial spring one and the ball one that sets up, ball one is contradicted with the outer wall of starting the axle and is connected. The utility model provides a fan starts bearing structure of box has simple structure, and the assembly requires lowly, advantage that noise at work is little.

Description

Bearing structure of fan starting box

Technical Field

The utility model belongs to the technical field of the fan, a bearing structure of fan start-up box is related to.

Background

The starting box of the electric fan is an important part for starting the electric fan. The common structure is as follows: including upper and lower start box, inertia circle, torsional spring connecting seat, jib, go up torsional spring, lower torsional spring, go up the torsional spring and arrange the torsional spring connecting seat in, in the jib was put to lower torsional spring, the inertia circle generally adopts the metal, with the fix with screw to start on the box down. For example, the chinese utility model patent CN 201486921U discloses a starting box of an electric fan.

In order to make the fan start smoothly, a bearing is generally arranged in the starting box, the bearing generally uses a ball bearing, and when the fan works, a gap exists between the bearing and the starting shaft, so that loud noise is generated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art's is not enough, provides a fan starts bearing structure of box, has simple structure, and the assembly requires lowly, advantage that noise at work is little.

In order to solve the above technical problem, the purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a fan starts bearing arrangement of box, fan starts the box and is provided with bearing frame and torsional spring seat including starting the cover, start to install between cover and the torsional spring seat and start the torsional spring, the front end of torsional spring seat is provided with the starting shaft of being connected with motor stator hub, be equipped with the cover in the bearing frame and establish the epaxial bearing of start, the bearing includes annular bearing base, be provided with the radial hole more than two in the bearing base, be provided with radial elastic component in the radial hole, radial elastic component includes radial spring one and the ball one that sets up, ball one is contradicted with the outer wall of starting the axle and is connected.

In foretell bearing structure of fan start-up box, the torsion spring seat forms the stair structure with the start-up axle, the cover is equipped with the gasket of being connected with the conflict of torsion spring seat front end on the start-up axle, be provided with the axial hole more than two on the bearing base, be provided with axial elastic component in the axial hole, axial elastic component includes two and the ball of the spring that the axial set up two, ball two is contradicted with the preceding terminal surface of gasket and is connected.

In the bearing structure of the fan starting box, the torsion spring seat and the starting shaft are coaxially arranged, and the torsion spring seat and the starting shaft are in an integrated structure; the starting cover and the bearing seat are of an integrated structure.

In the bearing structure of the fan starting box, the radial holes are uniformly distributed in the circumferential direction, and the axial holes are uniformly distributed in the circumferential direction, preferably, the number of the radial holes is 4, and the number of the axial holes is 4.

In the bearing structure of the fan starting box, the radial hole is a blind hole or a through hole with the same aperture, and when the radial hole is the through hole, the outer end of the first spring is in abutting connection with the inner wall of the bearing seat.

In the above bearing structure of the fan starting box, the axial hole is a blind hole or a through hole with a reduced front end, and when the axial hole is a through hole, the aperture of the reduced front end hole is smaller than the outer diameter of the second spring.

In the above bearing structure of the fan starting box, the front end of the bearing seat is provided with a limit block for axially limiting the bearing. The limiting blocks are circumferentially and uniformly distributed, preferably, the number of the limiting blocks is four.

In the above bearing structure of the fan starting box, the bearing base is made of plastic, and the first spring, the second spring, the first ball and the second ball are made of metal.

Compared with the prior art, the utility model, following beneficial effect has:

the utility model discloses improved the bearing arrangement of fan start-up box, reduced the clearance of bearing and start-up axle through radial elastic component, made start-up axle and bearing remain the contact throughout and be connected to reduce the produced noise of fan during operation. Based on same principle, the utility model discloses a set up axial elastic component and reduce the axial clearance between bearing and the torsional spring seat, further reduce the produced noise of fan during operation. Due to the use of the elastic component, the assembly accuracy required by the bearing of the utility model is also reduced to some extent. Therefore, the utility model provides a fan starts bearing structure of box has simple structure, and the assembly requires lowly, and noise at work is little advantage

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is a perspective view of the bearing and torsion spring seat of the present invention;

fig. 3 is a perspective view of the bearing of the present invention;

fig. 4 is a radial cross-sectional view of the bearing of the present invention;

fig. 5 is an axial cross-sectional view of the bearing of the present invention;

reference numerals: 1. starting the cover; 2. a bearing seat; 3. a torsion spring seat; 4. starting the shaft; 5. a bearing base; 6. a radial bore; 7. a first spring; 8. a first ball; 9. a gasket; 10. an axial bore; 11. a second spring; 12. a second ball bearing; 13. and a limiting block.

Detailed Description

The invention will be further described in the following with reference to specific embodiments thereof, with reference to the accompanying drawings, in which figures 1 to 5:

a bearing structure of a fan starting box comprises a starting cover 1, a bearing seat 2 and a torsional spring seat 3 are arranged in the starting cover 1, a starting torsion spring is arranged between the starting cover 1 and the torsion spring seat 3, a starting shaft 4 connected with a motor stator shaft is arranged at the front end of the torsion spring seat 3, the bearing seat 2 is internally provided with a bearing sleeved on the starting shaft 4, the bearing comprises an annular bearing base 5, more than two radial holes 6 are arranged in the bearing base 5, radial elastic components are arranged in the radial holes 6, the radial elastic component comprises a first spring 7 and a first ball 8 which are arranged in the radial direction, the first ball 8 is in interference connection with the outer wall of the starting shaft 4, the radial clearance between the bearing and the starting shaft 4 is reduced through the radial elastic component, so that the starting shaft 4 and the bearing are always in contact connection, and the noise generated when the fan works is reduced.

Compare fig. 2, in foretell bearing structure of fan start box, torsion spring seat 3 forms the stair structure with start-up axle 4, the cover is equipped with the gasket 9 of being connected with the conflict of 3 front ends of torsion spring seat on the start-up axle 4, be provided with more than two axial holes 10 on the bearing base 5, be provided with axial elastic component in the axial hole 10, axial elastic component includes two 11 and two 12 balls of spring that the axial set up, two 12 balls are contradicted with the preceding terminal surface of gasket 9 and are connected, reduce the axial clearance between bearing and the torsion spring seat 3 through axial elastic component, make gasket 9 and bearing remain the contact throughout and be connected, further reduce the produced noise of fan during operation.

Further, for convenience of processing, the torsion spring seat 3 and the starting shaft 4 are coaxially arranged, and the torsion spring seat 3 and the starting shaft 4 are of an integrated structure; the starting cover 1 and the bearing seat 2 are of an integrated structure.

In order to obtain better balance and stability, the radial holes 6 are uniformly distributed in the circumferential direction, and the axial holes 10 are uniformly distributed in the circumferential direction, preferably, the number of the radial holes 6 is 4, and the number of the axial holes 10 is 4.

The specific arrangement mode of the radial hole 6 and the radial elastic component is as follows: the radial hole 6 is a blind hole or a through hole with the same aperture, and when the radial hole 6 is the through hole, the outer end of the first spring 7 is connected with the inner wall of the bearing seat 2 in an abutting mode.

The specific arrangement of the axial hole 10 and the axial elastic component is as follows: the axial hole 10 is a blind hole or a through hole with a reduced diameter at the front end, and when the axial hole 10 is a through hole, the aperture of the reduced diameter hole at the front end is smaller than the outer diameter of the second spring 11.

The front end of the bearing seat 2 is provided with a limit block 13 for axially limiting the bearing. The limiting blocks 13 are circumferentially and uniformly distributed, preferably, the number of the limiting blocks 13 is four.

The bearing base 5 is made of plastic, and the first spring 7, the second spring 11, the first ball 8 and the second ball 12 are made of metal. When the bearing base 5 is made of plastic, the weight can be reduced, and the working noise is further reduced.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a bearing structure of fan starting box, fan starting box is provided with bearing frame (2) and torsional spring seat (3) including starting cover (1) in starting cover (1), start and install between cover (1) and the torsional spring seat (3) and start the torsional spring, the front end of torsional spring seat (3) is provided with the start shaft (4) of being connected with motor stator hub, the bearing of establishing on start shaft (4) is established to the built-in equipment of bearing frame (2), a serial communication port, the bearing includes annular bearing base (5), be provided with more than two radial hole (6) in bearing base (5), be provided with radial elastic component in radial hole (6), radial elastic component is including radial spring (7) and the ball (8) that set up, ball (8) are contradicted with the outer wall of start shaft (4) and are connected.

2. The bearing structure of the fan starting box according to claim 1, wherein the torsion spring seat (3) and the starting shaft (4) form a step structure, a gasket (9) which is connected with the front end of the torsion spring seat (3) in an abutting mode is sleeved on the starting shaft (4), more than two axial holes (10) are formed in the bearing base (5), an axial elastic component is arranged in each axial hole (10) and comprises a second spring (11) and a second ball (12) which are axially arranged, and the second ball (12) is connected with the front end face of the gasket (9) in an abutting mode.

3. A bearing structure of a fan start cartridge according to claim 2 characterized in that said radial holes (6) are circumferentially evenly distributed and said axial holes (10) are circumferentially evenly distributed.

4. The bearing structure of a fan starting box according to claim 1, characterized in that the radial hole (6) is a blind hole or a through hole, and when the radial hole (6) is a through hole, the outer end of the first spring is in interference connection with the inner wall of the bearing seat (2).

5. A bearing structure of a fan starting cartridge according to claim 2, wherein the axial hole (10) is a blind hole or a through hole with a reduced front end, and the diameter of the reduced front end is smaller than the outer diameter of the second spring (11) when the axial hole (10) is a through hole.

6. The bearing structure of a fan starting box according to claim 1, characterized in that the front end of the bearing seat (2) is provided with a limit block (13) for axially limiting the bearing.

7. The bearing structure of a fan starting box according to claim 2, wherein the material of the bearing base (5) is plastic, and the material of the first spring (7), the second spring (11), the first ball (8) and the second ball (12) is metal.