JPH11187603A - Electric motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve quality after assembly by constituting the binding pin insertion/soldering part of a double face printed wiring board in a non-through hole and surely connecting electrically the printed wiring board and a binding pin through soldering. SOLUTION: A binding part in which the terminal of a winding wire 3 is wound to the binding pin 5 provided for a part of the insulating frame 4 of a stator and they are connected electrically in solder 6a and a double face printed wiring board 2 having a through-hole 2b for mounting drive circuit parts and the binding pin insertion/soldering part of non-through hole constitution are provided. The double face printed wiring board 2 and the binding part are fixed to the binding stator, having the binding part where the terminal of the winding wire 3 is wound to the pin 5 which protrudes from the insulating frame 4 and they are soldered in a solder 6b. Consequently, even a seal is not adhered, the solder in a DIP tank is prevented from being absorbed into the through-hole and the binding pin can be inserted. The solder of the binding pin is prevented from being absorbed and the winding wire 3 from coming off.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection between a stator of an electric motor and a printed wiring board.

[0002]

2. Description of the Related Art In recent years, as a method for connecting a printed wiring board and a winding of a brushless electric motor, a method of soldering a carrage pin coming out of an insulating frame of a printed wiring board and a stator,
Alternatively, the winding end is directly tied to the printed wiring board and soldered.

[0003] The configuration of the stator of a conventional brushless motor will be described below. FIG. 3 is a configuration diagram (1) of a stator portion of a conventional brushless motor. 3, reference numeral 1 denotes a stator of a brushless motor, 7 denotes a single-sided printed wiring board, and 3 denotes a stator 1.
, 4 is an insulating frame (insulator) of the stator 1, 5 is a carrage pin for connecting the winding 3 to the single-sided printed wiring board 7, and 6a is an electrical connection between the carrage pin 5 and the winding 3. 6b is a solder for electrically connecting the single-sided printed wiring board 7 and the carrage pin 5 to each other.

[0004] The assembling operation of the stator portion of the brushless motor configured as described above will be described below.

[0005] A single-sided printed wiring board is mounted on a stator having a barbed portion in which the end of the winding wire 3 is wound and soldered to the carrage pin 5 protruding from the insulating frame 4, and the single-sided printed wiring board 7 is connected to the barbed portion. Is fixed by the solder 6b, and the stator portion of the brushless motor is completed.

FIG. 4 is a configuration diagram (2) of a stator portion of a conventional brushless motor. FIG. 4 differs from FIG. 3 only in that the printed wiring board portion is changed from a single-sided printed wiring board to a double-sided printed wiring board, and the other configurations and the assembly workability are the same.

[0007]

Conventional Example In the structure of the brushless motor shown in FIG. 3, a stator in which the ends of the windings are wound around the carrage pins protruding from the insulating frame and the barbs are fixed by soldering is completed. A single-sided printed wiring board is attached to the product, and the single-sided printed wiring board and the tying portion are fixed with solder. It peels more easily from the board and, in the worst case, loses its electrical connection. Conventionally, when a double-sided printed wiring board is used as shown in FIG. 4, when the electronic components of the printed wiring board are soldered in a solder DIP bath, the solder is sucked into a through hole for inserting a carrage pin, and the hole is removed. Is buried, and the carrage pin cannot be inserted. In order to prevent this, it is costly to take measures such as attaching a seal. Even when the holes are not filled with the solder and the carrage pins are inserted, the solder 6a that electrically connects the windings wound on the carrage pins is sucked up through the through holes and the windings come off. As described above, the conventional example has a problem in quality after assembly.

It is an object of the present invention to provide a method of connecting a stator and a printed wiring board of a brushless motor for the purpose of improving the quality after assembly.

[0009]

SUMMARY OF THE INVENTION According to the present invention, there is provided a helmet having a winding end wound around a carrage pin provided on a part of an insulating frame of a stator and electrically connected by solder, and a driving circuit component. A double-sided printed wiring board having a through hole and a non-through hole carrage pin insertion / soldering part with a
An electric motor in which the kinked portion is inserted and electrically connected to the carrage pin and soldered portion of the double-sided printed wiring board,
The insertion and soldering of the carrage pins on the double-sided printed wiring board is made non-through-hole, and the printed wiring board and the carrage pins are securely connected electrically with solder.

Further, the pattern peel strength can be increased by using a printed wiring board in which several through holes or via holes are arranged around the portion where the carrage pin is inserted, and both are connected by a conductor pattern.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An electric motor according to the present invention comprises: a helmet having a winding end wound around a carrage pin provided on a part of an insulating frame of a stator and electrically connected by solder; A double-sided printed wiring board having a through hole and a non-through hole carrage pin insertion / soldering part with a
This is a configuration in which the carrage pins are inserted and electrically connected to the carage pin insertion and soldering portions of this double-sided printed wiring board, and the printed wiring board and the carrage pins are securely connected to the solder without sucking up the solder of the carrage pins and removing the winding. Can be connected.

Further, by connecting a portion where the carrage pin is inserted and several surrounding through holes or via holes by a conductor pattern, the heat radiation effect and the adhesive force are increased, and the pattern peel strength is increased. it can.

Further, it is preferable that the carrage pin and the carrage pin insertion / soldering portion are soldered in a DIP bath.

[0014]

(Embodiment 1) FIG. 1 is a structural view of a stator portion in a brushless motor according to Embodiment 1 of the present invention.

In FIG. 1, reference numeral 1 denotes a stator of a brushless motor, 2 denotes a double-sided printed wiring board, 2a denotes a conductor pattern portion of the double-sided printed wiring board 2, 2b denotes a through-hole portion of the double-sided printed wiring board 2, and 3 denotes a fixed portion. Windings applied to child 1, 4
Is an insulating frame (insulator) of the stator 1, 5 is a carrage pin for connecting the winding 3 and the double-sided printed wiring board 2,
Reference numeral 6a denotes solder for electrically connecting the carrage pin 5 and the winding 3, and 6b denotes solder for electrically connecting the double-sided printed wiring board 2 and the carage pin 5.

Hereinafter, an assembling operation of the stator unit of the brushless motor according to the first embodiment of the present invention will be described.

The double-sided printed wiring board 2 is mounted on a carrage stator having a lanced portion in which the end of the winding 3 is wound and soldered to a pin 5 protruding from the insulating frame 4. The soldering part is fixed by the solder 6b, and the stator part of the brushless motor is completed.

With the above configuration, the brushless motor according to the first embodiment is a brushless motor having a non-through-hole configuration only at the carrage pin insertion and soldering portion of the double-sided printed wiring board. Even when the electronic components of the wiring board are soldered in a solder DIP bath, the solder is sucked up into the non-through holes where the carrage pins are inserted,
The carrage pin can be inserted and soldered without filling the hole. Also, even if you insert a carragepin,
The solder of the kinked portion is sucked up, the winding is not detached, and the printed wiring board and the kinked portion can be reliably connected by the solder, and this has the effect of realizing a quality-free brushless motor.

(Embodiment 2) FIG. 2 is a structural view of a stator portion in a brushless motor according to Embodiment 2 of the present invention.

In FIG. 2, reference numeral 1 denotes a stator of a brushless motor, 2 denotes a double-sided printed wiring board, 2a denotes a conductor pattern portion of the double-sided printed wiring board 2, 2b denotes a through-hole portion of the double-sided printed wiring board 2, and 3 denotes a fixed portion. Windings applied to child 1, 4
Is an insulating frame (insulator) of the stator 1, 5 is a carrage pin for connecting the winding 3 and the double-sided printed wiring board 2,
Reference numeral 6a denotes solder for electrically connecting the carrage pin 5 and the winding 3, and 6b denotes solder for electrically connecting the double-sided printed wiring board 2 and the carage pin 5.

The assembling operation of the brushless motor stator according to the second embodiment of the present invention will be described below.

The double-sided printed wiring board 2 is mounted on a stator having a helical portion in which the ends of the windings 3 are wound around pins 5 protruding from the insulating frame 4, and the double-sided printed wiring board 2 and the helical portion are attached. It is fixed by the solder 6b, and the stator of the brushless motor is completed.

With the above configuration, the brushless electric motor according to the second embodiment has a non-through-hole structure only at the carrage pin insertion / soldering portion of the double-sided printed wiring board, and has several positions located around the carrage pin insertion / soldering portion. The use of a printed wiring board with through-holes connected by a conductor pattern increases the heat dissipation effect and adhesive strength, and increases the pattern peeling strength. This has the function of realizing the brushless motor described above.

[0024]

As is apparent from the above description, according to the first and third aspects of the present invention, only the carrage pin insertion and soldering portion of the double-sided printed wiring board has a non-through hole configuration, so that no seal is attached. In both cases, it is possible to prevent the solder in the DIP bath from being sucked into the through hole, and to insert the carrage pin. In addition, even when a carrage pin is inserted, the printed board and the joined part can be electrically connected with the solder reliably without sucking up the solder at the joined part, and the quality is stabilized.

According to the second aspect of the present invention, a printed wiring board is used in which a carrage pin insertion / soldering portion and a plurality of through holes or via holes located in the periphery are connected by a conductor pattern. Thereby, the heat radiation effect and the adhesive strength are increased, the pattern peeling strength can be increased, and the quality is stabilized.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a brushless motor stator portion according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a brushless motor stator portion according to a second embodiment of the present invention.

FIG. 3 is a configuration diagram of a stator unit of a conventional brushless motor (1).

FIG. 4 is a configuration diagram of a stator unit of a conventional brushless motor (2).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stator 2 Double-sided printed wiring board 3 Winding 4 Insulation frame 5 Pin 6 Solder

Claims (3)

[Claims] 1. A structure in which a winding end is wound around a carrage pin provided on a part of an insulating frame of a stator and electrically connected by solder, and a through hole and a non-through hole in which a driving circuit component is mounted. A double-sided printed wiring board having a carrage pin insertion and soldering portion, and an electric motor having the carrage pin inserted and electrically connected to the carrage pin insertion and soldering portion of the double-sided printed wiring board. 2. The electric motor according to claim 1, wherein a portion into which the carrage pin is inserted and a plurality of surrounding through holes or via holes are connected by a conductor pattern. 3. The electric motor according to claim 1, wherein the carrage pin and the carrage pin insertion / soldering portion are soldered in a DIP tank.