JPH1070871A - Stator for brushless motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stator for brushless motor which can ensure a space isolation distance to a terminal pin where the end of a winding is wound in the case of forming the housing of the brushless motor out of steel plate and improve assembling efficiency. SOLUTION: An insulator 1 is formed out of resin to insulate a stator iron core 2. Awinding 3 is wound around the stator iron core 2 through the insulator 1. The inner wall 4 of the insulator 1 retains the winding 3, and a terminal pin 5 is pressed in the pressing-in hole 6 of the inner wall 4. The winding terminal 7 of the winding 3 is wound around the terminal pin 5 and connected by soldering (not illustrated).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a small-sized brushless motor stator used for driving a fan such as a fan or a ventilation fan.

[0002]

2. Description of the Related Art In recent years, with regard to the winding terminal of a stator of this type of brushless motor, while pursuing further cost reduction by promoting the mechanization of the production process, the safety and the safety have been further improved. There is a strong demand for improved quality.

Conventionally, the winding end of the stator of this type of brushless motor has a configuration as shown in FIGS. Hereinafter, the configuration will be described with reference to the drawings.

[0004] As shown in the figure, 101 is a printed circuit board 1.
02 is an insulator provided with a protrusion 105 at a position corresponding to a notch hole 104 provided at the center of a land 103.

In the above configuration, the winding terminal 107 of the winding 106 is wound around the projection 105 of the insulator 101, and then is moved from the cutout of the cutout 104 of the printed circuit board 102 to the cutout 104 on the surface on the wiring 108 side. Are fixed to the lands 103 provided around them by soldering, and then the whole is molded with resin.

[0006]

In such a conventional brushless motor stator, since the protrusion 105 of the insulator 101 is provided on the outer peripheral side of the stator core 109, the housing of the brushless motor is made of a steel plate. In addition, there is a problem that a spatial insulation distance between the steel plate housing and the winding terminal 107 wound around the projection 105 cannot be secured.

The present invention has been made to solve the above-mentioned problems, and when a housing of a brushless motor is made of a steel plate, it is possible to secure a space insulation distance from a terminal pin around which a winding terminal is wound, and to assemble efficiency. It is an object of the present invention to provide a brushless motor stator that can improve the performance.

[0008]

According to a first aspect of the present invention, there is provided a stator for a brushless motor.
A stator core having m × n (m is an integer of 2 or more in phase, n is a positive integer) magnetic pole teeth protruding inward from the yoke portion and stacked by a required number; An insulator that insulates a stator core, a winding wound around the magnetic pole tooth portion via the insulator, and an inner wall of the insulator that holds the winding on an inner peripheral side of the magnetic pole tooth portion,
A press-fitting hole for press-fitting the terminal pin into the inner wall is provided on the opposite side of the winding, and a terminal of the winding is wound around the terminal pin press-fitted into the press-fitting hole and connected by soldering.

In order to achieve the above object, the second means is to wind the winding terminal at the beginning of winding around the first terminal pin, wind the winding, and then connect the winding terminal at the end of winding to the second terminal pin. The terminal pins were wound around and connected by soldering.

In order to achieve the above object, the third means has a configuration in which winding terminals having different phases are wound around terminal pins and connected by soldering to make a neutral point.

Further, in order to achieve the above object, the fourth means has a configuration in which a winding terminal of the same phase of a parallel connection system is wound around a terminal pin and connected by soldering.

In order to achieve the above object, a fifth means is that a plurality of electrodes having insertion holes into which terminal pins are inserted, and the electrodes connected to or integrated with a connector terminal are integrally formed of resin. And a terminal pin that is press-fitted into an insulator and wound around a winding terminal, and the terminal pin is inserted into the insertion hole and connected by soldering.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is characterized in that m × n pieces (m is an integer of 2 or more in phase and n is a positive integer) projecting inward from the yoke portion. A stator core having the required number of magnetic pole teeth, and an insulator that insulates the stator core, an insulator that insulates the stator core, a winding wound around the magnetic pole teeth via the insulator, and the magnetic pole teeth. An inner wall of the insulator holding the winding is provided on an inner peripheral side of the insulator, and a press-in hole for press-fitting a terminal pin into the inner wall is provided on a non-winding side, and a terminal of the winding is press-fitted into the press-in hole. It is configured to be connected to the terminal pin by winding and soldering, and has an effect of ensuring a spatial insulation distance between the wound terminal pin of the winding terminal and the steel plate housing of the brushless motor.

According to a second aspect of the present invention, the winding terminal at the beginning of winding is wound around the first terminal pin, the winding is wound, and the winding terminal at the end of winding is wound on the second terminal pin. It is configured to be connected by winding soldering, so that a spatial insulation distance between the wound first and second terminal pins of the winding terminal and the steel plate housing of the brushless motor can be secured, and the stator of the brushless motor can be secured. This has the effect of improving assembly efficiency.

According to a third aspect of the present invention, a winding terminal having a different phase is wound around a terminal pin and connected by soldering to a neutral point. A spatial insulation distance between the attached terminal pins and the steel plate housing of the brushless motor can be ensured, and the effect of improving the assembly efficiency of the stator of the brushless motor is obtained.

The invention according to claim 4 is such that the winding terminal of the same phase of the parallel connection system is wound around the terminal pin and connected by soldering, and the winding terminal is wound. A space insulation distance between the terminal pins and the steel plate housing of the brushless motor can be ensured, and the effect of improving the assembly efficiency of the stator of the brushless motor is obtained.

According to a fifth aspect of the present invention, there is provided a terminal having a plurality of electrodes having insertion holes into which terminal pins are inserted, and a terminal which is connected to a connector terminal or which is integrally formed of a resin. And a terminal pin press-fitted into an insulator and wound around a winding terminal, wherein the terminal pin is inserted into the insertion hole and connected by soldering. A space insulation distance between the terminal pins provided and the steel plate housing of the brushless motor can be secured, and the effect of improving the assembly efficiency of the stator of the brushless motor can be obtained.

(Embodiment 1) As shown in FIG. 1, an insulator 1 is formed of resin to insulate a stator core 2, and a winding 3 is wound around the stator core 2 via the insulator 1. ing. The inner wall 4 of the insulator 1 holds the winding 3, and the terminal pins 5 are press-fitted into press-fit holes 6 of the inner wall 4. The winding terminal 7 of the winding 3 is wound around the terminal pin 5 and connected by soldering (not shown).

With the above configuration, the wound terminal pin 5 of the winding terminal 7 can be located on the inner peripheral side of the stator core 2, and a space insulation distance from the steel plate housing of the brushless motor can be secured. it can.

(Embodiment 2) The same parts as those in Embodiment 1 are denoted by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 2, the winding terminal 7 at the beginning of winding
a is wound around the first terminal pin 5a, the winding 3 is wound, and the winding end 7b at the end of winding is wound around the second terminal pin 5b, and the first terminal pin 5a and the second terminal pin 5b are wound.
Both are configured to be connected by soldering (not shown).

With the above configuration, the winding terminal 7a at the beginning of winding
And the wound first end of the winding end 7b
The terminal pin 5a and the second terminal pin 5b are connected to the stator core 2
Can be located on the inner peripheral side of the brushless motor, ensuring a space insulation distance with the steel plate housing of the brushless motor,
Further, the efficiency of assembling the stator of the brushless motor can be improved.

(Embodiment 3) The same portions as those in Embodiment 1 are denoted by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 3, the U-phase winding terminal 7c, the V-phase winding terminal 7d, and the W-phase winding terminal 7e are wound around terminal pins 5c at the same neutral point and soldered. (Not shown).

With the above configuration, the U-phase winding terminals 7c, V
The wound neutral terminal pin 5c of the phase winding terminal 7d and the W-phase winding terminal 7e can be located on the inner peripheral side of the stator core 2, and is connected to the steel plate housing of the brushless motor. The space insulation distance can be secured, and the efficiency of assembling the stator of the brushless motor can be improved.

(Embodiment 4) The same parts as those in Embodiment 1 are denoted by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 4, a U-phase winding terminal 7ca of the parallel connection type and another U-phase winding terminal 7cb are wound around the U-phase terminal pin 5d and soldered (not shown). Then, the V-phase winding terminal 7da and the other V-phase winding terminal 7db are wound around the V-phase terminal pin 5e and soldered (not shown), and the W-phase winding terminal 7ea and the other end are wound. Is wound around the W-phase terminal pin 5f and soldered (not shown).

With the above configuration, the U-phase terminal pins 5d, V
The phase terminal pin 5e and the W-phase terminal pin 5f can be located on the inner peripheral side of the stator core 2 and can secure a spatial insulation distance with the steel plate housing of the brushless motor. The efficiency of assembling the stator can be improved.

(Embodiment 5) The same portions as those in Embodiment 1 are denoted by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIGS. 1, 5 and 6, the electrode 8 has an insertion hole 9 into which the terminal pin 5 is inserted.
And resin are integrally formed. In this configuration, the terminal pin 5 press-fitted into the insulator 1 and the wrapped terminal 7 is inserted into the insertion hole 9 and connected to the electrode 8 by soldering 12.

According to the above configuration, the terminal pin 5 wound around the winding terminal 7 can be located on the inner peripheral side of the stator core 2, and a space insulation distance from the steel plate housing of the brushless motor is ensured. And the efficiency of assembling the stator of the brushless motor can be improved.

[0032]

As is clear from the above embodiment,
ADVANTAGE OF THE INVENTION According to this invention, when the housing of a brushless motor is made of a steel plate, the brushless motor which can ensure the space insulation distance with the wound terminal pin of a winding terminal, and can improve assembly efficiency Stator can be provided.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a stator of a brushless motor according to Embodiments 1 and 5 of the present invention.

FIG. 2 is a perspective view showing a stator of a brushless motor according to a second embodiment of the present invention.

FIG. 3 is a perspective view showing a stator of a brushless motor according to a third embodiment of the present invention.

FIG. 4 is a perspective view showing a stator of a brushless motor according to a fourth embodiment of the present invention.

FIG. 5 is a perspective view showing a terminal set according to a fifth embodiment of the present invention.

FIG. 6 is a perspective view showing a stator of the brushless motor to which the terminal set is attached.

FIG. 7 is an assembly view of a stator of a brushless motor to which a conventional printed circuit board is attached.

FIG. 8 is a sectional view of a main part of a stator of the brushless motor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulator 2 Stator core 3 Winding 4 Inner wall 5 Terminal pin 5a First terminal pin 5b Second terminal pin 5c Neutral terminal pin 5d U-phase terminal pin 5e V-phase terminal pin 5f W-phase terminal pin 6 Press-fit hole 7 Winding terminal 7a Winding winding terminal 7b Winding winding terminal 7c, 7ca, 7cb U-phase winding terminal 7d, 7da, 7db V-phase winding terminal 7e, 7ea, 7eb W-phase winding terminal Winding terminal 8 Electrode 9 Insertion hole 10 Terminal for connector 11 Terminal set 12 Soldering

Claims (5)

[Claims] 1. A fixed structure in which m × n (m is an integer of 2 or more and n is a positive integer) magnetic pole teeth protruding inward from a yoke portion are stacked in a required number. A core iron, an insulator that insulates the stator core, a winding wound around the magnetic pole teeth via the insulator, and an insulator that holds the winding on the inner peripheral side of the magnetic pole teeth. A brushless motor having an inner wall, a press-fitting hole for press-fitting a terminal pin into the inner wall is provided on the non-winding side, and a terminal of the winding is wound around the terminal pin press-fitted into the press-fitting hole and connected by soldering. stator. 2. A winding terminal at the beginning of winding is wound around the first terminal pin, and after winding, a winding terminal at the end of winding is connected to the second terminal pin.
2. The brushless motor stator according to claim 1, wherein the stator is connected to the terminal pin by winding and soldering. 3. A neutral point by winding winding terminals having different phases around terminal pins and connecting them by soldering.
The stator of the brushless motor described. 4. The brushless motor stator according to claim 1, wherein the in-phase winding terminals of the parallel connection system are wound around terminal pins and connected by soldering. 5. A plurality of electrodes each having an insertion hole for inserting a terminal pin, a terminal set connected to a connector terminal or formed integrally with the electrode by resin, and a winding press-fitted into an insulator. 5. The brushless motor stator according to claim 1, further comprising a terminal pin wound around a terminal, wherein the terminal pin is inserted into the insertion hole and connected by soldering.