CN210343759U

CN210343759U - Insulation structure of radiating fan

Info

Publication number: CN210343759U
Application number: CN201921044258.6U
Authority: CN
Inventors: 胡燕华
Original assignee: Suzhou Longying Intelligent Technology Co ltd
Current assignee: Suzhou Longying Intelligent Technology Co ltd
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2020-04-17
Anticipated expiration: 2029-07-05

Abstract

The utility model discloses an insulation structure of a heat radiation fan, which comprises a fan frame, a circuit board, an axle center of a fan blade and an axle sleeve, wherein the axle sleeve is fixedly arranged on a metal base of the fan frame, the axle center of the fan blade is axially stopped and can be rotatably arranged in the axle sleeve in the circumferential direction, a disc structure made of an insulation material is fixedly arranged outside the axle sleeve, and the circuit board is fixedly arranged on the disc structure. The disc structure can be used for hiding electronic elements on the circuit board, and the thinning design of the fan is facilitated.

Description

Insulation structure of radiating fan

Technical Field

The utility model relates to a fan, in particular to radiator fan's insulation system.

Background

The radiating fan is characterized in that all parts are installed on a metal base of a fan frame, and a conducting circuit is arranged on a circuit board, so that short circuit and other phenomena can occur if the circuit board is directly contacted with the metal base, so that the existing radiating fan achieves an insulating function by pasting an insulating sheet between the circuit board and the metal base, and only has an insulating function, and the insulating sticker needs additional assembly, is complex to assemble, consumes time and occupies space.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model provides a radiator fan's insulation system, this radiator fan's insulation system is integrative with the axle sleeve, and the equipment is convenient, has still improved the performance of fan.

The utility model discloses a solve the technical scheme that its technical problem adopted and be: the utility model provides a radiator fan's insulation system, includes fan frame, circuit board, the axle center and the axle sleeve of flabellum, axle sleeve fixed mounting is on the metal base of fan frame, and flabellum axle center axial locking and circumferencial direction can be pivoted install in the axle sleeve, and the axle sleeve outside is fixed to be equipped with a disc structure of being made by insulating material, and circuit board fixed mounting is on this disc structure.

As a further improvement, the disk structure forms a circle along the axially protruding dust ring in the periphery, and this dust ring clamp forms the air flow channel of buckling between dust ring and the fan blade in locating the clearance between fan blade main part and the blade.

As a further improvement, the disc structure is further provided with at least one positioning column, and the circuit board is provided with positioning holes, and the positioning columns are correspondingly inserted into the positioning holes of the circuit board.

As a further improvement of the present invention, the disc structure is further provided with at least one avoiding groove structure, and the electronic component on the circuit board can be hidden in the avoiding groove structure.

As a further improvement, the shaft sleeve and the disc structure are of an integrated injection molding structure.

As a further improvement of the utility model, the shaft sleeve and the disc structure are of a split structure, and the disc fixing sleeve is arranged outside the shaft sleeve.

As a further improvement, be formed with the mounting hole on the metal base of fan frame, this mounting hole lateral wall forms axial warpage's crimp structure, and the overall structure that axle sleeve and disc formed inserts and locates in this mounting hole, and the crimp structure of mounting hole lateral wall closely inlays in the insulating lateral wall of locating axle sleeve or disc.

As a further improvement, the structure that the fan blade axle center axial locking and circumferencial direction can be pivoted and install in the axle sleeve is: install bearing and solid fixed ring in the axle sleeve, gu fixed ring fixes and locates the axle sleeve opening inboard, bearing axial both ends tightly support axle sleeve bottom surface and solid fixed ring respectively, the flabellum axle center is inserted and is located in the bearing.

As a further improvement, the shaft sleeve is provided with an inner groove structure on the bottom surface inside the shaft sleeve, a friction plate is arranged in the inner groove structure, and the end part of the shaft center contacts with the surface of the friction plate.

The utility model has the advantages that: the utility model discloses a set up the disc structure that insulating material made on the axle sleeve, a metal base is insulating for realizing circuit board and fan frame, this disc structure and axle sleeve structure as an organic whole, during the equipment, one step of equipment targets in place, the equipment is convenient, save time, and this disc is structural still to be formed with the dirt proof ring, can prevent effectively that the dust from getting into inside the motor, the extension motor life-span, and this disc is structural still to be equipped with the reference column that is used for the location circuit board, circuit board packaging efficiency and installation stability have been improved, this disc can also be used for hiding the electronic component on the circuit board structurally, be favorable to the slim design of fan.

Drawings

FIG. 1 is a schematic diagram of a prior art structure;

FIG. 2 is a first schematic diagram of the present invention;

FIG. 3 is a schematic diagram of a second structure of the present invention;

FIG. 4 is a schematic diagram of a third structure of the present invention;

FIG. 5 is a schematic diagram of a fourth structure of the present invention;

fig. 6 is a schematic view of the shaft sleeve assembly structure of the present invention.

Axis- - -1 motor shell- - -2 fixed ring- - -3 bearing- - -4

Fan frame upper cover 5 metal base 6 fan blades 7

Magnet-8 coil group-9 circuit board-10 shaft sleeve-11

Disc structure-12 friction plates-13 dust-proof ring-14

Positioning column-15 avoiding groove structure-16 inner groove structure-17

Insulating sheet- - -18

Detailed Description

Example (b): the utility model provides a radiator fan's insulation system, includes fan frame, circuit board, the axle center 1 and the axle sleeve 11 of flabellum 7, axle sleeve 11 fixed mounting is on the metal base of fan frame, and flabellum 7 axle center axial locking and circumferencial direction can be pivoted install in axle sleeve 11, and axle sleeve 11 outside is fixed to be equipped with a disc structure 12 of being made by insulating material, and circuit board fixed mounting is on this disc structure 12. During assembly, the shaft sleeve 11 is arranged on the metal base of the fan frame, and the disc structure 12 outside the shaft sleeve 11 is just paved on the surface of the metal base to realize insulation between the circuit board 10 and the metal base, so that the fan assembly efficiency is improved, and the insulating sheet 18 does not need to be additionally assembled.

A circle of dust-proof ring 14 protruding along the axial direction is formed on the outer periphery of the disc structure 12, the dust-proof ring 14 is clamped in a gap between the main body of the fan blade 7 and the blade, and a bent air flow channel is formed between the dust-proof ring 14 and the fan blade 7. The dust ring 14 and the fan blade 7 form a bend in the air circulation direction, which has the effect of preventing dust from entering the motor.

The disc structure 12 is further provided with at least one positioning column 15, the circuit board is provided with a positioning hole, and the positioning column 15 is correspondingly inserted into the positioning hole of the circuit board. The positioning column 15 is matched with the positioning hole, so that the circuit board 10 is positioned, and the assembly efficiency and the positioning precision of the circuit board 10 are improved.

The disc structure 12 is further provided with at least one avoiding groove structure 16, and the electronic components on the circuit board can be accommodated and hidden in the avoiding groove structure 16. The avoiding groove structure 16 can accommodate and hide electronic components on the circuit board 10, which is beneficial to the thinning design of the fan, and meanwhile protects the electronic components, thereby avoiding the damage of the electronic components and prolonging the service life of the fan.

The shaft sleeve 11 and the disc structure 12 are of an integral injection molding structure. A shaft sleeve 11 for assembling the bearing 4 is injected in the center of the metal base by a plastic injection molding method, and the periphery of the shaft sleeve 11 is tightly abutted against the surface of the base and a disc structure 12 is simultaneously injected.

The shaft sleeve 11 and the disc structure 12 are of split structures, and the disc is fixedly sleeved on the outer side of the shaft sleeve 11. The split structure is formed by integrally molding the disc structure 12 on a metal base in an injection molding manner, and then assembling the shaft sleeve 11 in the disc structure 12.

The fan frame is characterized in that a mounting hole is formed in the metal base of the fan frame, the side wall of the mounting hole forms an axially warped flanging structure, the integral structure formed by the shaft sleeve 11 and the disc is inserted into the mounting hole, and the flanging structure of the side wall of the mounting hole is tightly embedded in the insulating side wall of the shaft sleeve 11 or the disc. The connection strength of the metal base of the fan frame and the integral structure of the shaft sleeve 11 and the disc is greatly improved by embedding the warped bent edge structure and the insulating side wall.

The axial stopping of flabellum 7 axle center and the structure that installing in axle sleeve 11 that circumferencial direction can rotate do: install bearing 4 and solid fixed ring 3 in the axle sleeve 11, gu fixed ring 3 is fixed to be located axle sleeve 11 opening inboard, bearing 4 axial both ends tightly support axle sleeve 11 bottom surface and solid fixed ring 3 respectively, flabellum 7 axle center is inserted and is located in bearing 4.

An inner groove structure 17 is arranged on the bottom surface of the inner side of the shaft sleeve 11, a friction plate 13 is arranged in the inner groove structure 17, and the end part of the shaft center contacts the surface of the friction plate 13.

Claims

1. The utility model provides a radiator fan's insulation system which characterized in that: the fan shaft sleeve structure comprises a fan frame, a circuit board, an axis (1) of a fan blade and a shaft sleeve (11), wherein the shaft sleeve is fixedly installed on a metal base (6) of the fan frame, the axial direction of the axis of the fan blade is stopped, the circumferential direction of the axis of the fan blade can be rotated and installed in the shaft sleeve, a disc structure (12) made of an insulating material is fixedly arranged on the outer side of the shaft sleeve, and the circuit board (10) is fixedly installed on the disc structure.

2. The insulating structure of a heat-dissipating fan as claimed in claim 1, wherein: a circle of dustproof ring (14) protruding along the axial direction is formed on the periphery of the disc structure, the dustproof ring is clamped in a gap between the fan blade main body and the blades, and a bent air flow channel is formed between the dustproof ring and the fan blades (7).

3. The insulating structure of a heat-dissipating fan as claimed in claim 1, wherein: the disc structure is also provided with at least one positioning column (15), the circuit board is provided with a positioning hole, and the positioning column is correspondingly inserted into the positioning hole of the circuit board.

4. The insulating structure of a heat-dissipating fan as claimed in claim 1, wherein: the disc structure is also provided with at least one avoiding groove structure (16), and the electronic element on the circuit board can be accommodated and hidden in the avoiding groove structure.

5. The insulating structure of a heat-dissipating fan as claimed in claim 1, wherein: the shaft sleeve and the disc structure are of an integrated injection molding structure.

6. The insulating structure of a heat-dissipating fan as claimed in claim 1, wherein: the shaft sleeve and the disc structure are of a split structure, and the disc is fixedly sleeved on the outer side of the shaft sleeve.

7. The insulating structure of a heat-dissipating fan as claimed in claim 5 or 6, wherein: the fan frame is characterized in that a mounting hole is formed in a metal base of the fan frame, the side wall of the mounting hole forms an axially warped flanging structure, an integral structure formed by the shaft sleeve and the disc is inserted into the mounting hole, and the flanging structure of the side wall of the mounting hole is tightly embedded in the insulating side wall of the shaft sleeve or the disc.

8. The insulating structure of a heat-dissipating fan as claimed in claim 1, wherein: the structure that installing in the axle sleeve that flabellum axle center axial locking and circumferencial direction can rotate does: a bearing (4) and a fixing ring (3) are installed in the shaft sleeve, the fixing ring is fixedly arranged on the inner side of the opening of the shaft sleeve, the two axial ends of the bearing respectively tightly abut against the bottom surface of the shaft sleeve and the fixing ring, and the axis of the fan blade is inserted into the bearing.

9. The insulating structure of a heat dissipating fan according to claim 8, wherein: an inner groove structure (17) is arranged on the bottom surface of the inner side of the shaft sleeve, a friction plate (13) is arranged in the inner groove structure, and the end part of the shaft center is in contact with the surface of the friction plate.