CN211924504U

CN211924504U - Fan structure that axial strength is high

Info

Publication number: CN211924504U
Application number: CN201922143635.8U
Authority: CN
Inventors: 温福强; 陈倩; 于收海
Original assignee: AVIC Shenyang Xinghua Aero Electrical Appliance Co Ltd
Current assignee: AVIC Shenyang Xinghua Aero Electrical Appliance Co Ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-11-13
Anticipated expiration: 2029-12-04

Abstract

The utility model relates to the technical field of fans, in particular to a fan structure with high axial strength, which comprises a shell, a stator component, a rotor component, a shaft sleeve and a circuit board; the circuit board is fixed on the shell through screws; the stator assembly is fixed on the shaft sleeve through a first key; the rotor assembly comprises fan blades, a rotor sleeve, a shaft and a permanent magnet, the shaft sleeve is fixed on the shell in a hot-loading mode through a second key, a nut, a clamp spring, an adjusting gasket, a first bearing, a spring sleeve, a spring arranged in the spring sleeve, a hole elastic retainer ring and a second bearing are sequentially installed on the periphery of the shaft from the head section to the tail section, the tail section of the shaft is fixed with the rotor sleeve in a hot-loading mode, the rotor assembly is fixed in the axial direction through the cooperation between the nut, the clamp spring, the adjusting gasket, the first bearing and the second bearing and the shaft, and the fastening direction of the nut on the shaft is opposite to the rotating direction of the shaft in the working state. The structure is easy to assemble and low in cost, and the safe operation life of the fan can be greatly prolonged.

Description

Fan structure that axial strength is high

Technical Field

The utility model relates to a fan technical field, concretely relates to fan structure that axial strength is high.

Background

At present, the rotor of the domestic small fan is mostly in a jump ring type structure. The clamp spring is simple in structure and convenient to disassemble. But the jump ring is single thin itself, especially to outer rotor structure, the external diameter is big, the vibration is big, rotate big characteristics, and the jump ring easily produces not hard up and drops to influence the performance and the life of fan, the security is low. Therefore, a fan structure capable of overcoming the defect that the clamp spring is easy to loosen and fall is urgently needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a fan structure that axial strength is high, it has the difficult not hard up advantage that drops of jump ring.

In order to achieve the above object, the utility model adopts the following technical scheme:

a fan structure with high axial strength comprises a shell, a stator component, a rotor component, a shaft sleeve and a circuit board; the circuit board is fixed on the shell through screws; the stator assembly is fixed on the shaft sleeve through a first key; the rotor assembly comprises fan blades, a rotor sleeve, a shaft and a permanent magnet, the shaft sleeve is fixed on the shell in a hot-loading mode through a second key, a nut, a clamp spring, an adjusting gasket, a first bearing, a spring sleeve, a spring arranged in the spring sleeve, a hole elastic retainer ring and a second bearing are sequentially installed on the periphery of the shaft from the head section to the tail section, the tail section of the shaft is fixed with the rotor sleeve in a hot-loading mode, the rotor assembly is fixed in the axial direction through the cooperation between the nut, the clamp spring, the adjusting gasket, the first bearing and the second bearing and the shaft, and the fastening direction of the nut on the shaft is opposite to the rotating direction of the shaft in the working state.

Preferably, the stator assembly comprises a stator core and a stator winding; the stator winding is wound on a stator core, and the stator core is fixed on the shaft sleeve through a first key.

Preferably, the fan blade and the rotor sleeve are fixed in a hot-fitting mode, and the permanent magnet is bonded to the inner surface of the rotor sleeve.

Preferably, the fan structure with high axial strength further comprises an end cover, and the end cover is in threaded connection with the shaft sleeve.

Use the utility model discloses a beneficial effect is: the clamp spring is strengthened in the axial fastening capacity through the nut, the clamp spring is in the fastened state when the rotor assembly rotates, the fastening direction of the nut is opposite to the rotating direction of the shaft, when the rotor assembly rotates, the nut is in the pre-tightened state, the pre-tightening force of the nut can be improved, and the anti-loosening capacity is improved. The structure is easy to assemble and low in cost, and the safe operation life of the fan can be greatly prolonged.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is an enlarged structural schematic diagram among the nut, the snap spring and the shaft.

The reference numerals include:

1-shell, 2-permanent magnet, 3-stator core, 4-first key, 5-hole circlip, 6-first bearing, 61-second bearing, 7-shaft sleeve, 8-rotor sleeve, 9-circuit board, 10-screw, 11-end cover, 12-nut, 13-spring sleeve, 14-shaft, 15-snap spring, 16-adjusting gasket, 17-second key, 18-spring, 19-stator winding and 20-fan blade.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1-2, a blower fan structure with high axial strength comprises a housing 1, a stator assembly, a rotor assembly, a shaft sleeve 7 and a circuit board 9; the circuit board 9 is fixed on the shell 1 through a screw 10; the stator assembly is fixed on the shaft sleeve 7 through a first key 4; the rotor assembly comprises fan blades 20, a rotor sleeve 8, a shaft 14 and a permanent magnet 2, a shaft sleeve 7 is fixed on a shell 1 through a second key 17 and a hot-fitting mode, a nut 12, a clamp spring 15, an adjusting gasket 16, a first bearing 6, a spring sleeve 13, a spring 18 arranged in the spring sleeve 13, a hole elastic retainer ring 5 and a second bearing 61 are sequentially installed on the periphery of the shaft 14 from the head section to the tail section, the hole elastic retainer ring 5, the spring sleeve 13, the spring 18, the adjusting gasket 16 and the clamp spring 15 are axially positioned between the first bearing 6 and the second bearing 61, the tail section of the shaft 14 is fixed with the rotor sleeve 8 in a hot-fitting mode, the rotor assembly is axially fixed through the nut 12, the clamp spring 15, the adjusting gasket 16, the first bearing 6, the second bearing 61 and the shaft 14 in a matching mode, and the fastening direction of the nut 12 on the shaft 14 is opposite to the rotating direction of the shaft 14 in a. The rotation direction of the rotor assembly enables the shaft 14 and the nut 12 to be always kept in a pre-tightening state, and the self-loosening effect is achieved. And the nut 12 strengthens the fastening capacity of the clamp spring 15 in the axial direction, and ensures that the clamp spring 15 is in a fastening state when the rotor rotates, so that the axial strength of the outer rotor is improved.

The stator assembly comprises a stator core 3 and a stator winding 19; the stator winding 19 is wound around the stator core 3, and the stator core 3 is fixed to the sleeve 7 by the first key 4.

The fan blade 20 is fixed with the rotor sleeve 8 in a hot-assembling way, and the permanent magnet 2 is adhered to the inner surface of the rotor sleeve 8.

The fan structure that axial strength is high still includes end cover 11, and end cover 11 and axle sleeve 7 threaded connection.

The ordinary fan only has the jump ring and does not possess the nut, the utility model provides a fan simple structure, with low costs, can improve the structural strength and the safe operation life-span of fan greatly. The fan is particularly suitable for fans using clamp spring structures, and has very wide market prospect.

The above description is only a preferred embodiment of the present invention, and many changes can be made in the detailed description and the application scope according to the idea of the present invention for those skilled in the art, which all belong to the protection scope of the present invention as long as the changes do not depart from the concept of the present invention.

Claims

1. The utility model provides a fan structure that axial strength is high which characterized in that: the motor comprises a shell (1), a stator assembly, a rotor assembly, a shaft sleeve (7) and a circuit board (9); the circuit board (9) is fixed on the shell (1) through a screw (10); the stator assembly is fixed on the shaft sleeve (7) through a first key (4); the rotor assembly comprises fan blades (20), a rotor sleeve (8), a shaft (14) and a permanent magnet (2), a shaft sleeve (7) is fixed on the shell (1) through a second key (17) and a hot-loading mode, a nut (12), a snap spring (15), an adjusting gasket (16), a first bearing (6), a spring sleeve (13), a spring (18) arranged in the spring sleeve (13), an elastic retainer ring (5) for holes and a second bearing (61) are sequentially installed on the periphery of the shaft (14) from the head section to the tail section, the tail section of the shaft (14) is fixed with the rotor sleeve (8) in a hot-loading mode, the rotor assembly is fixed in the axial direction through the matching of a nut (12), a clamp spring (15), an adjusting gasket (16), a first bearing (6), a second bearing (61) and a shaft (14), the tightening direction of the nut (12) on the shaft (14) is opposite to the rotation direction of the shaft (14) in the working state.

2. The fan structure that axial strength is high according to claim 1, characterized in that: the stator assembly comprises a stator core (3) and a stator winding (19); the stator winding (19) is wound on the stator core (3), and the stator core (3) is fixed on the shaft sleeve (7) through the first key (4).

3. The fan structure that axial strength is high according to claim 1, characterized in that: the fan blade (20) and the rotor sleeve (8) are fixed in a hot-assembling mode, and the permanent magnet (2) is bonded to the inner surface of the rotor sleeve (8).

4. The fan structure that axial strength is high according to claim 1, characterized in that: the fan structure that axial strength is high still includes end cover (11), end cover (11) and axle sleeve (7) threaded connection.