CN107816441A - Cooling fan structure - Google Patents

Abstract

The present invention is a heat dissipation fan structure, comprising: a fan frame with a base part, a shaft part provided on the base part, and a plurality of clamping holes passing through the base part; a stator assembled on the base part The fan frame includes a stator core and a stator insulating frame integrally formed on the stator core, wherein the stator core includes a ring part set on the shaft part, and a plurality of ribs arranged on the periphery of the ring part part, and a plurality of pole claws provided on each of the ribs, the stator insulating frame has at least one insulating isolation part integrally formed on the annular part and the plurality of ribs, and a plurality of insulating isolation parts connected to the insulating isolation part and locked in Insulated locking ribs for each locking hole.

Description

Cooling fan structure

technical field

The present invention relates to a fan, in particular to a cooling fan structure.

Background technique

With the rapid development of the computer industry, the instruction cycle of the computer central processing unit is getting faster and faster, and the heat generated by it is also increasing. If the excessive heat accumulated on the CPU cannot be discharged in time, in addition to affecting the stability of its operation, the heat will also affect the performance of other electronic components, and will also shorten the service life of the electronic components. Therefore, the industry usually attaches a heat sink on the central processing unit (or other heat-generating electronic components), and adopts a cooling fan (for example, a cooling fan provided in Taiwan Patent Application No. 102103308, and a cooling fan provided in Taiwan Patent Application No. 098123358 Provide a cooling fan) to generate forced airflow to the radiator to accelerate heat dissipation, or directly use the cooling fan to air-cool and dissipate the central processing unit (or other heat-generating electronic components).

1, the known cooling fan includes a fan frame 11 and a stator 12 and a rotor 13 accommodated in the fan frame 11, the stator 12 is fixed in the fan 11 frame, and the rotor 13 can rotate relative to the stator 12. A base portion 111 is disposed in the center of the fan frame 11 , and a shaft portion 112 is integrally formed in the center of the base portion 111 . A shaft hole 121 is formed in the center of the stator 12 . The stator 12 is sheathed on the periphery of the shaft portion 112 through the shaft hole 121 , and the stator 12 is fixed on the shaft portion 112 by glue. However, the heat dissipation fan may lose its adhesive effect or deteriorate due to impact or high temperature environment, and then the stator 12 will loosen or even be separated from the shaft portion 112, causing the stator 12 to move up when the rotor 13 is running, resulting in operation. Interference, and finally cause the cooling fan to not work properly.

Secondly, the stator 12 includes a stator core 122 , a coil 123 , a circuit board 124 , an upper insulating frame 125 and a lower insulating frame 126 . The two insulating frames 125, 126 are made of insulating materials such as plastic materials, and the two insulating frames 125, 126 are respectively arranged on the upper and lower ends of the stator core 122 to wrap the stator core 122 in it, so that the coil 123 can be wound On two insulating frames 125,126. The circuit board 124 is disposed at the bottom of the lower insulating frame 126 and is electrically connected to the coil 123 . However, before the stator 12 is assembled, the upper insulating frame 125 and the lower insulating frame 126 must be aligned and assembled into one body by hand, and the stator core 122 must be positioned between the upper and lower insulating frames 125, 126 at the same time. time, which will highlight the time-consuming and labor-intensive defects of assembly.

Contents of the invention

The purpose of the present invention is to provide a cooling fan structure with a firm stator assembly.

Another object of the present invention is to provide a cooling fan structure that saves time and labor in stator assembly.

In order to achieve the aforementioned purpose, a heat dissipation fan structure is provided according to the present invention, comprising: a fan frame having a base portion, a shaft portion disposed on the base portion, and a plurality of clamping holes penetrating the base portion; A stator is assembled on the fan frame, and includes a stator core and a stator insulating frame integrally formed on the stator core, wherein the stator core includes a ring part placed on the shaft part, and a plurality of rings are arranged on the The ribs on the periphery of the annular portion and a plurality of pole claws provided on each of the ribs, the stator insulating frame has at least one insulating isolation portion integrally formed on the annular portion and the plurality of ribs and a plurality of insulating parts connected to the insulating The isolation part is locked on the insulating locking rib of each locking hole.

Preferably, the fan frame has four clamping holes surrounding the shaft; the stator insulating frame has four insulating clamping ribs.

Preferably, a shoulder is protruded from the wall surface of each locking hole of the fan frame, and the end of each insulating locking rib of the stator insulating frame has a hook that fits in the locking hole and is stuck against the shoulder. department.

Preferably, there is an abutting portion between each insulating locking rib of the stator insulating frame, and the stator further includes a set of abutting ribs disposed on the shaft portion and abutted between each abutting portion and the base portion. circuit board.

Preferably, the insulating isolation part of the stator insulating frame is integrally formed on the pole claw part of the stator core.

Preferably, the insulation isolation part of the stator insulating frame has an isolation ring segment partially covering the ring part, an isolation rib segment covering each of the ribs, and an isolation ring segment partially covering the pole claw part. Pole claw segment.

Preferably, the axial portion of the fan frame is radially provided with a plurality of stoppers, and the ring portion of the stator core is abutted against each stopper.

Accordingly, the present invention provides a heat dissipation fan structure, which is mainly provided with a plurality of clamping holes on the base of the fan frame for the clamping and positioning of the insulating clamping ribs of the stator insulating frame, so as to reach the stator. The purpose of assembling firmly. Secondly, the present invention provides a heat dissipation fan structure, the stator core and the stator insulating frame are both integrally formed, and when the coil is wound after forming, the coil and the stator core are formed by the structural design of the stator insulating frame. The electrical insulation makes it unnecessary to assemble the stator core and the stator insulating frame when the stator is assembled, so as to achieve the purpose of saving time and labor in stator assembly.

Regarding the technology, means and other effects adopted in order to achieve the above-mentioned purpose in the present invention, a preferred feasible embodiment is given and described in detail in conjunction with the drawings as follows.

Description of drawings

Fig. 1 is a sectional view of a known fan heating fan.

Fig. 2 is an exploded perspective view of an embodiment of the present invention.

Fig. 3 is an exploded perspective view of another perspective of the embodiment of the present invention.

Fig. 4 is a three-dimensional assembled view of the embodiment of the present invention.

FIG. 5 is a cross-sectional view of line 5-5 in FIG. 4 .

FIG. 6 is a cross-sectional view of line 6-6 in FIG. 4 .

Fig. 7 is a perspective view of the present invention, showing the state of integrally formed stator core and stator insulating frame.

Fig. 8 is a top view of the present invention, showing the state of integrally formed stator core and stator insulating frame.

Fig. 9 is a three-dimensional exploded view of the present invention, showing the state that the fan frame has two locking holes and the stator insulating frame has two insulating locking ribs.

Explanation of the reference signs in the figure:

[A known]

Fan frame 11 base part 111

Shaft 112 Stator 12

Shaft hole 121 Stator core 122

Coil 123 Circuit board 124

Upper insulating frame 125 Lower insulating frame 126

Rotor 13

[this invention]

Frame 20 Base 21

Shaft part 22 Clamping hole 23

Shoulder 231 Block 24

Stator core 30 Ring portion 31

Rib 32 Pole Claw 33

Stator insulation frame 40 insulation isolation part 41

Isolation ring section 411 Isolation rib section 412

Isolated claw section 413 Insulated locking rib 42

Hook part 421 Contact part 43

Coil 50 Circuit board 60

Rotor 70

Detailed ways

Referring to Fig. 2 to Fig. 8, a cooling fan structure provided by the embodiment of the present invention is mainly composed of a fan frame 20 and a stator, wherein:

The fan frame 20 has a base portion 21, a shaft portion 22 disposed on the base portion 21, and four card holes 23 passing through the base portion 21; in this embodiment, each card of the fan frame 20 The hole 23 surrounds the shaft portion 22 ; a shoulder 231 protrudes from the wall surface of each locking hole 23 of the fan frame 20 ; finally, a plurality of retaining portions 24 radially protrude from the shaft portion 22 of the fan frame 20 .

The stator is assembled on the fan frame 20 and includes a stator core 30 and a stator insulating frame 40 integrally formed on the stator core 30 . The stator core 30 includes an annular portion 31 set on the shaft portion 22 , four ribs 32 disposed on the periphery of the annular portion 31 , and pole claw portions 33 disposed on each of the ribs 32 . The stator insulating frame 40 has at least one insulating spacer 41 integrally formed on the annular portion 31 and the four ribs 32 and four insulating locking ribs 42 connected to the insulating spacer 41 and locked in each of the locking holes 23 ; In this embodiment, the insulation isolation portion 41 of the stator insulation frame 40 is more integrally formed on the pole claw portion 33 of the stator core 30, therefore, the insulation isolation portion 41 of the stator insulation frame 40 has a part covering the ring Part 31 of the isolation ring segment 411, an isolation rib segment 412 covering each of the ribs 32, and an isolation pole claw segment 413 partially covering the pole claw portion 33, and the stator insulating frame 40 is formed for the coil 50 winding, the coil 50 is electrically insulated from the stator core 30 by the structural design of the stator insulating frame 40; The hook portion 421 in the hole 23 and stuck on the shoulder 231; in addition, there is an abutting portion 43 between the insulating locking ribs 42 of the stator insulating frame 40, and the stator further includes a set of 22 and is held against the circuit board 60 between each of the abutting parts 43 and the base part 21, and the circuit board 60 is electrically connected with the coil 50; finally, the stator core 30 is sleeved on the shaft part 22 Afterwards, the ring portion 31 is abutted against each stop portion 24 .

The above description is the configuration description of each main component of the embodiment of the present invention. Of course, the cooling fan further includes a rotor 70, which is pivotally mounted on the shaft portion 22 of the fan frame 20 and rotates relative to the stator. Since the rotor 70 is a known component, and its actuation mode is the same as the known ones, It is not the focus of creation of the present invention, so the detailed structure and action mode of the component are no longer described in detail. The present invention has at least the following effects.

Firstly, the present invention can provide a cooling fan structure in which the stator is firmly assembled.

Since the present invention is provided with four clamping holes 23 on the base portion 21 of the fan frame 20, and the stator core 30 and the stator insulating frame 40 are integrally formed, and the stator insulating frame 40 is insulated from it. The part 41 is formed with four insulating locking ribs 42, so when the stator core 30 is sleeved on the shaft portion 22 of the fan frame 20, the stator insulating frame 40 is sleeved on the shaft portion 22 of the fan frame 20 at the same time. At this time, the stator insulating frame 40 is positioned in the locking hole 23 of the fan frame 20 through its insulating locking rib 42, and furthermore, the hook portion 421 of each insulating locking rib 42 is positioned in the locking hole. 23 and stuck against the shoulder 231, so that the stator (that is, the stator core 30 and the stator insulating frame 40) is more firmly installed on the shaft portion 22 of the fan frame 20, preventing the cooling fan from being affected by impact or high temperature. Lower the stator and disengage from the shaft portion 22 of the fan frame 20 .

Second, the present invention can provide a cooling fan structure that saves time and labor in stator assembly.

In the present invention, the stator core 30 and the stator insulating frame 40 are integrally formed, and when the coil 50 is wound after forming, the coil 50 is electrically insulated from the stator core 30 by the structural design of the stator insulating frame 40. , so that when the stator is assembled, it is not necessary to perform alignment assembly on the stator core 30 and the stator insulating frame 40, so as to achieve the purpose of saving time and labor in stator assembly.

It is worth mentioning that, referring back to Fig. 5 and Fig. 6, due to the present invention, a plurality of stoppers 24 can be protruded radially from the shaft portion 22 of the fan frame 20, and the annular portion 31 of the stator core 30 is Each of the stoppers 24, therefore, when the stator core 30 is sleeved on the shaft portion 22 of the fan frame 20, the displacement of the stator core 30 toward the base portion 21 of the fan frame 20 is controlled by the stator core The annular portion 31 of the fan frame 30 abuts against each stopper portion 24 and is limited, and the displacement of the stator core 30 toward the base portion 21 of the fan frame 20 is controlled by the insulating locking rib 42 of the stator insulating frame 40 Corresponding latches are positioned in the clamping hole 23 of the fan frame 20, so that the firmness of the stator (that is, the stator core 30 and the stator insulating frame 40) installed on the shaft portion 22 of the fan frame 20 can be improved. .

Referring to FIG. 9, in this embodiment, two clamping holes 23 may be provided on the base portion 21 of the fan frame 20, and the stator insulating frame 40 is formed with two holes 23 on its insulating isolation portion 41 for corresponding The insulating locking rib 42 of the locking hole 23 is locked to achieve another embodiment. Of course, the number of locking holes 23 on the base portion 21 of the fan frame 20 and the shape of the stator insulating frame 40 on its insulating isolation portion 41 The number of insulating locking ribs 42 can be three or other plural numbers corresponding to each other.

In summary, the above-mentioned embodiments and drawings are only preferred embodiments of the present invention, and should not be used to limit the scope of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention should belong to Within the scope covered by the patent of the present invention.

Claims (7)

1. a kind of cooling fan structure, comprising：

One fan frame, there is a base portion, an axle portion located at the base portion and the plural hole clipping for running through the base portion；

One stator, group are located at the fan frame, and the stator insulating frame of the stator core is shaped in including a stator core and one, Wherein the stator core is placed on the annular portion of the axle portion including one, plural number is located on the flank and plural number of annular portion periphery Located at the pole claw of the respectively flank, the stator insulating frame has an insulation for being at least shaped in the annular portion and plural flank Isolation part and plural number be connected to this be dielectrically separated from portion and clip the respectively hole clipping insulation clip rib.

2. the hole clipping quantity of cooling fan structure as claimed in claim 1, the wherein fan frame is four, and encloses and be located at the axle Portion；The insulation clip rib quantity of the stator insulating frame is four.

, should 3. the wall surface of the hole of each hole clipping of cooling fan structure as claimed in claim 1, the wherein fan frame is convexly equipped with a shoulder The end of each insulation clip rib of stator insulating frame has one in the hole clipping and fastened in the hook part of the shoulder.

4. have one between each insulation clip rib of cooling fan structure as claimed in claim 1, the wherein stator insulating frame Abutting part, the stator further include one and are nested with the axle portion and by only in the respectively circuit board between the abutting part and the base portion.

5. the portion of being dielectrically separated from of cooling fan structure as claimed in claim 1, the wherein stator insulating frame is more shaped in The pole claw of the stator core.

6. the portion of being dielectrically separated from of cooling fan structure as claimed in claim 5, the wherein stator insulating frame has a local bag Cover the isolation annulus section of the annular portion, a cladding and respectively the isolation rib section of the flank and one locally coat the isolation pole of the pole claw Pawl section.

7. the axle portion radial convex of cooling fan structure as claimed in claim 1, the wherein fan frame is provided with plural stopper, the stator Annular portion unshakable in one's determination is to only in the respectively stopper.