JP3019666U - Radiator fan stator coupling structure - Google Patents

Abstract

(57) [Abstract] [Purpose] A stator coupling structure for a heat dissipation fan that has a good magnetic field induction effect and is easy to manufacture. [Structure] The ends of the upper and lower pole pieces are bent 90 ° upward and downward by a pressure method, and a hollow ring-shaped cylinder is provided in the center of the lower pole piece so that the stator is located at the center of the upper and lower pole pieces. Insert it into the center circular hole of the coil seat, and provide one protrusion on each side of the upper end of the stator coil seat, and insert the protrusion into the small circular hole formed to correspond to the upper pole piece, and connect the upper pole piece. In this way, the upper pole piece, the lower pole piece, and the stator coil seat are combined with each other, and the hollow column tube projectingly provided in the center of the heat radiation fan seat is inserted and fitted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a type of radiator fan stator coupling structure.

[0002]

[Prior art]

 In a general heat dissipation fan, the fan rotor body, the stator, the electric circuit board and the fan seat are connected, and the fan rotor generates a rotating motion by the magnetic field induction of the stator. General stator magnetic field induction is mainly determined by changes in the magnetic poles and coils, and when explaining a simple two-pole stator, the larger the induction range where the coils intersect the magnetic poles, the better the magnetic field effect that occurs. Usually when manufacturing pole pieces, the pole thickness is often increased by stacking pieces of silicon steel. At the same time, please refer to the structure of the conventional heat dissipation fan shown in FIG. The upper pole piece 11 and the lower pole piece 12 are formed by stacking silicon steel pieces, and such stacking work is, in fact, considerably expensive and time consuming, and wastes materials. Also, looking at the pole piece range induced by the coil, it can be said that the unit formed inside the pole piece is somewhat meaningless because the effective magnetic field effect that truly occurs exists on the surface of the pole piece. . Further, looking at the conventional heat dissipation fan shown in FIG. 1, the fan needs to fix the upper pole piece 11, the lower pole piece 12, the stator coil 13, and the electric circuit board 14, and for that purpose, one metal sleeve 15 is used. With the help of the above, the above-mentioned components are fitted and fixed one by one, so that the structure is not strong, and the upper edge 151 of the metal sleeve 15 and the upper pole piece 11 are connected by rivets. There is a need. Such a method that requires complicated work is not economical for a product whose unit price is low and whose demand is high.

[0003]

[Problems to be solved by the device]

 The present invention has been made in view of the above-mentioned drawbacks of the conventional technology and solves them. Therefore, the present invention proposes a single stator upper pole piece and a lower pole piece facing downward, respectively. It bends upward 90 ° and achieves a better magnetic field induction effect than the conventional method of stacking silicon steel pieces, and it can be directly joined without the need for any joints or sleeves, saving a lot of work time and improving production efficiency. It is an object of the present invention to provide a kind of stator coupling structure for a heat dissipation fan.

[0004]

[Means for Solving the Problems]

 The stator coupling structure of the radiating fan of the present invention comprises an upper pole piece 31, a stator coil seat 33 and a lower pole piece 12, which is characterized by two magnetic poles of the upper pole piece 31 and the lower pole piece 12 in the stator structure. The forming portions are stretched outward with a certain width, and they are downward 90 in the upper pole piece 31 and upward in the upper pole piece 31. The stator coil seat 33, which is bent and has an annular cylinder 312, 322 projecting from the upper pole piece 31 and the lower pole piece 12 so as to face each other, is located at an intermediate position between the upper pole piece 31 and the lower pole piece 12. The upper pole piece 31 and the lower pole piece 12 are positioned by being inserted into the central circular hole of the stator, and one protrusion is formed on each side of the upper surface of the stator coil seat 33. Two small circular holes 313 formed corresponding to the upper pole piece 31 are drilled and pressed to press the upper pole piece 31 to join, and two small circular holes 313 are formed at appropriate positions on the bottom surface of the stator coil seat 33. A convex column is formed, and the convex column 332 is inserted into the two circular holes 323 formed corresponding to the lower pole piece 12 and the circular hole 41 of the electric circuit board 4 and connected, respectively. The finished stator structure is attached to the hollow column tube 51 in the center of the fan seat 5. It is to be constant.

[0005]

[Action]

 According to the stator coupling structure of the heat dissipation fan of the present invention, the ends of the upper pole piece and the lower pole piece are bent upward and downward by 90 ° by a pressing method, and a hollow ring-shaped cylinder is provided in the center of the lower pole piece to project the upper pole piece. And the lower pole piece is inserted into the central circular hole of the stator coil seat, and one protrusion is provided on each side of the upper end of the stator coil seat, and the protrusion is inserted into the small circular hole formed corresponding to the upper pole piece. Then, the upper pole piece is joined, and in this way the upper pole piece, the lower pole piece and the stator coil seat are joined together, and a hollow column tube projecting at the center of the heat radiation fan seat is inserted and completed. As such, it is exempt from the other downstrokes required in traditional fan stators and is easily combined.

[0006]

【Example】

 As shown in FIG. 2, the present invention comprises a fan rotor 2, a stator structure 3, an electric circuit board 4 and a fan seat 5, of which the stator structure 3 and the electric circuit board 4 are in the center of the fan seat 5. A hollow column tube 51 projecting from is inserted into the fan seat 5 and is inserted in the center of the fan seat 5. Further, as shown in FIGS. 3 to 6, the upper pole piece 31 and the lower pole piece 32 in the stator structure 3 of the present invention are provided with one extending portion 311 and 321 outwardly at the two magnetic pole forming portions thereof. , They are bent 90 ° downward in the upper pole piece 31 and upward in the lower pole piece 32, respectively. In addition, one annular column 312, 322 is provided so as to be opposed to each other at the center of each of the upper pole piece 31 and the lower pole piece 32, and the annular column 312, 322 is connected to the upper pole piece 31 and the lower pole piece 12 respectively. The stator coil seat 33 is positioned by inserting the stator coil seat 33 into the circular hole 331 having a central thickness of the stator coil seat 33. Further, one protrusion 333 is provided on each side of the upper surface of the stator coil seat 33, and the protrusion 333 is formed in the two small circular holes 313 formed corresponding to the upper pole piece 31. Two pieces of convex columns 332 are provided at appropriate positions on the lower surface of the stator coil seat 33 of the notification circuit control unit, which are fixedly coupled to each other, and the convex columns 332 correspond to the two circular holes of the lower pole piece 12. 323 and the circular hole 41 of the electric circuit board 4, and then the upper pole piece 31 and the lower pole piece 12 are coupled to the stator coil seat 33 (the relative position thereof is shown in FIG. 6 and after assembly). The stator structure is shown in Figure 7). Finally, a hollow column tube 51 at the center of the fan seat 5 is inserted into the stator structure 3 connected to the electric circuit board 4 and fitted in the center of the fan seat 5.

[0007]

[Effect of device]

 The stator coupling structure of the radiating fan of the present invention achieves a better magnetic field induction effect than the conventional method of stacking silicon steel pieces, and it can be directly coupled without any joint or sleeve, which saves a lot of work time. (EN) Provided is a kind of radiator fan stator coupling structure which can be omitted and the production efficiency can be improved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a conventional heat radiation fan.

FIG. 2 is an exploded perspective view of a heat dissipation fan of the present invention.

FIG. 3 is a plan view and a front view of the upper pole piece of the present invention.

FIG. 4 is a plan view and a front view of a lower pole piece of the present invention.

FIG. 5 is a plan view and a front view of a stator coil seat of the present invention.

FIG. 6 is an exploded perspective view of a stator structure of the present invention.

FIG. 7 is a perspective view of a stator structure of the present invention.

[Explanation of symbols]

2 ... Fan rotor 3 ... Stator structure 4 ...
・ Electrical circuit board 5 ・ ・ ・ Fan seat 51 ・ ・ ・ Hollow column tube 31 ・ ・ ・ Upper pole piece 32 ・ ・ ・ Lower pole piece 311 ・ ・ ・
Upper magnetic pole extension 321 ... Lower magnetic pole extension 312 ...
-Upper pole piece annular cylinder 322 ... Lower pole piece annular cylinder 33 ... Stator coil seat 333 ... Protrusion 332 ... Convex column

Claims (1)

[Scope of utility model registration request] 1. An upper pole piece 31, a stator coil seat 33, and a lower pole piece 12 are constituted, and the feature is that two magnetic pole forming portions of the upper pole piece 31 and the lower pole piece 12 in the stator structure are outward. The upper pole piece 31 is bent downward by 90 ° and the upper pole piece 31 is bent upward by 90 ° so as to face the centers of the upper pole piece 31 and the lower pole piece 12, respectively. As one circular cylinder 312,3
The upper pole piece 31 and the lower pole piece 12 are positioned by the convex portion 22 being inserted into the circular hole in the center of the stator coil seat 33 at the intermediate position between the upper pole piece 31 and the lower pole piece 12. In addition, one protrusion is formed on each side of the upper surface of the stator coil seat 33, and the protrusion is inserted into two small circular holes 313 formed corresponding to the upper pole piece 31 and pressed against it. The upper pole piece 31 is connected to the stator coil seat 33.
Two convex pillars are formed at appropriate positions on the bottom surface of the convex pillar 332, and the convex pillars 332 are inserted into the two circular holes 323 formed corresponding to the lower pole piece 12 and the circular hole 41 of the electric circuit board 4. A stator coupling structure for a heat radiating fan, in which the stator structure that has been coupled and then completed is fixed to the hollow column tube 51 in the center of the fan seat 5.