CN2288541Y

CN2288541Y - Positioner for stator induction element of small radiation fan

Info

Publication number: CN2288541Y
Application number: CN97209826U
Authority: CN
Inventors: 洪庆升
Original assignee: 洪庆升
Current assignee: Sunonwealth Electric Machine Industry Co Ltd
Priority date: 1997-02-24
Filing date: 1997-02-24
Publication date: 1998-08-19
Anticipated expiration: 2007-02-24

Abstract

The utility model relates to a positioner for stator induction elements of small radiation fans. The utility model is composed of a coil base which mildly forms a round shape and a circuit board, wherein, the coil base is combined with an upper pole piece and a lower pole piece through an axle tube to penetrate. The center point of the coil base and the front pole end of the upper pole piece can be connected to form a beeline, and induction elements are arranged on the vertical position of the beeline; the coil base is provided with corresponding marks so that the circuit board is matched and combined through the corresponding marks, and then the induction elements of the circuit board can be precisely assembled on the correct positions.

Description

The positioner of the stator sensing element of small heat-dissipating fan

The utility model relates to a kind of positioner of stator sensing element of small heat-dissipating fan.

In the 22327 No. four " the stator combined structure of small heat-dissipating fan " patent case of bulletin, it includes stator coil, upper and lower pole piece, circuit board and shell block, utilize the metal central siphon in the newel hole of stator coil, upper and lower pole piece and circuit board, in addition, the small heat-dissipating fan is established one and is started sensing element for being easy to the startup of rotor on circuit board.

Disclosed by above-mentioned patent case, owing to run through stator coil, upper and lower pole piece and circuit board with the metal central siphon, therefore after this circuit board and upper and lower pole piece are fixed, the central point that can't guarantee the utmost point front end of this upper pole piece and coil holder accurately is aligned in line the lengthwise position with being assembled in sensing element on the circuit board, so the startup poor effect of motor.

The purpose of this utility model is to provide a kind of positioner of stator sensing element of small heat-dissipating fan, on the lengthwise position of a straight line of becoming to coexist between the utmost point front end three of the sensing element that makes circuit board and the central point of coil holder and upper pole piece, and ease of assembly alignment, to strengthen the detent torque of motor, make motor be easy to be activated, avoid motor starting bad or very cause the situation that can't start and produce.

The purpose of this utility model is achieved in that the positioner of the stator sensing element that a kind of small heat-dissipating fan promptly is provided, and it includes: coil holder is a conglobate seat, is combined with upper and lower pole piece and is wound with coil with central siphon; The utmost point front end of the central point of described coil holder and superior pole piece is connected to form a straight line; Circuit board is combined in axis hole on the central siphon of described coil holder, is provided with control piece, makes rotor can respond to the sensing element of startup; Sensing element on the described circuit board is located on the lengthwise position of the straight line that the utmost point front end of described coil holder central point and described superior pole piece is connected to form.

The advantage of the utility model device is, can make coil holder, upper and lower pole piece, sensing element or circuit board be easy to the pairing assembling, and sensing element is located on its position that can bring into play best inductive effects, can make motor be easy to start.

Below in conjunction with accompanying drawing, embodiment of the present utility model is described, wherein:

Fig. 1 is the three-dimensional exploded view of first embodiment of the present utility model;

Fig. 2 is the combination front view of first embodiment of the present utility model;

Fig. 3 is the three-dimensional exploded view of second embodiment of the present utility model.

See also first embodiment of the present utility model shown in Figure 1, it is made of coil holder 1, circuit board 2.

This coil holder 1 is a slightly conglobate seat, it is penetrated with superior pole piece 11, inferior pole piece 12 with central shaft tube 14, and be wound with coil 13, the utmost point front end 111 of this superior pole piece 11 can form a straight line with the central point of coil holder 1, and the position that coil holder 1 is provided with inferior pole piece 12 is provided with breach 15, on the lengthwise position of the straight line that the utmost point front end 111 that this breach 15 is located at superior pole piece 11 and the central point of coil holder 1 are connected to form, and stretch into for sensing element 23; Make on the lengthwise position of utmost point front end 111 that sensing element 23 can be positioned at superior pole piece 11 and the central point line of coil holder 1, thereby obtain preferable motor starting effect.This coil holder 1 can be provided with corresponding mark 16, this corresponding mark 16 can be lines, the point, the relative position of this corresponding mark 16 on the lengthwise position of the utmost point front end 111 of superior pole piece 11 and the formed straight line of central point of coil holder 1, therefore, corresponding mark 16 can obviously be marked on coil holder 1, when assembly line ring support 1 and circuit board 2, sensing element 23 set corresponding corresponding marks 24 can be matched mutually easily, make on the lengthwise position of utmost point front end 111 that sensing element 23 can be assembled in superior pole piece 11 easily and the formed straight line of central point of coil holder 1.

This circuit board 2 is combined with various control pieces 21, and runs through for central shaft tubes 14 with axis hole 22 and to be incorporated into coil holder 1, and circuit board 2 is provided with sensing element 23, sensing element 23 is provided with corresponding mark 24, corresponding mark 24 is marks such as lines, point, in case of necessity, also can directly be formed by the limit.

See also shown in Figure 2, during the utility model combination, be fixed again by 24 one-tenth mutual pairings of coil holder 1 set corresponding mark 16 and circuit board 2 set corresponding marks, therefore, comparatively convenient in assembling, and it is unjustified on best sensed position and make the motor starting condition of poor not have sensing element 23.

See also second embodiment of the present utility model shown in Figure 3, when the coil holder 1 and the combination of circuit board 2 need become thin design, circuit board 2 also can be established breach 25 and insert for sensing element 23, this sensing element 23 can be inserted with the identical of 25 one-tenth identical sizes of breach, or slotting the pulling of pin that supplies sensing element 23 with location hole 26, make the two become correct coincideing, fixing, and circuit board 2 is provided with corresponding mark 27, this corresponding mark 27 can be lines, point or directly form by the limit of breach 25, by this corresponding mark 27 can with sensing element 23, the corresponding mark 16 of coil holder 1 matches mutually, preferable to form to plus effect, on the lengthwise position of the straight line that the utmost point front end 111 that makes sensing element 23 can be fixed on the central point of coil holder 1 and superior pole piece 11 is connected to form, make motor can be easy to start.

Claims

1, a kind of positioner of stator sensing element of small heat-dissipating fan, it includes: coil holder is a conglobate seat, is combined with upper and lower pole piece and is wound with coil with central siphon; The utmost point front end of the central point of described coil holder and superior pole piece is connected to form a straight line; Circuit board is combined in axis hole on the central siphon of described coil holder, is provided with control piece, makes rotor can respond to the sensing element of startup; It is characterized in that the sensing element on the described circuit board is located on the lengthwise position of the straight line that the utmost point front end of described coil holder central point and described superior pole piece is connected to form.

2, according to the positioner of the stator sensing element of the described small heat-dissipating of claim 1 fan, it is characterized in that, be equipped with the central point and the utmost point front end of described superior pole piece and the corresponding mark that described sensing element accurately aligns assembling that make described coil holder on described coil holder and the described sensing element, described corresponding mark is point or lines.

3, according to the positioner of the stator sensing element of the described small heat-dissipating of claim 1 fan, it is characterized in that the position in conjunction with described inferior pole piece on the described coil holder is provided with the breach that stretches into for described sensing element.

4, according to the positioner of the stator sensing element of the described small heat-dissipating of claim 1 fan, it is characterized in that described circuit board is provided with breach of inserting or the hole that becomes to match for described sensing element.

5, according to the positioner of the stator sensing element of the described small heat-dissipating of claim 1 fan, it is characterized in that described circuit board is provided with and makes described sensing element and coil holder corresponding mark in correspondence with each other, described corresponding mark is point or lines.