JPH0657062U - Brushless motor - Google Patents

Abstract

(57) [Abstract] [Purpose] The purpose of the brushless motor is to improve the assemblability when connecting the winding and the printed circuit board. [Structure] The winding portion 8 is entangled with the pins 11 for soldering, and the printed board 3 is provided with an eyelet-shaped conductive metal 12.
By soldering, and finally by soldering the pin 11 and the conductive metal 12, the winding terminal portion 9 of the winding portion 8 is connected to the copper foil 13 of the printed circuit board 3. [Effect] By soldering the pin 11 to the conductive metal 12, the connection between the winding terminal portion 9 and the copper foil 13 is completed, and the assemblability and the quality can be improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a brushless motor.

[0002]

[Prior art]

 Conventionally, in a brushless motor, a printed circuit board is used to connect the winding to the drive circuit.

A DC brushless motor will be described below as an example of a conventional brushless motor with reference to FIGS. 3 and 4. FIG. 3 is a configuration diagram of a DC brushless motor which is an example of a conventional brushless motor, and FIG. 4 is an enlarged view of a connection portion between a winding terminal portion and a printed circuit board of a DC brushless motor which is an example of a conventional brushless motor. . In FIG. 3, 20 is a stator of a fixed part, 21 is a rotor magnet of a rotating part, 22 is a printed circuit board for mounting electronic parts such as a hall sensor, 23 is a bearing for rotatably supporting a shaft 24, Reference numeral 25 is a motor case, 26 is an assembly screw for assembling the motor case 25, and 27 is a winding portion of the stator 20. Further, in FIG. 4, 28 is a winding terminal portion, and 29 is an electronic component soldered to the printed board 22.

Assembly of the brushless motor configured as described above will be described below. In the brushless motor, the printed circuit board 22 is used to provide a conduction path in order to generate a magnetic field in the stator 20 by passing an electric current through the winding circuit 27. When connecting the terminating end 28, the winding terminating end 28 is soldered to the same surface as the soldering surface of the electronic component 29 because the printed board 22 made of an inexpensive single-sided copper foil is used.

[0005]

[Problems to be solved by the device]

 However, in the above-described conventional configuration, as shown in FIG. 4, the winding terminal end portion 28 is soldered on the same surface as the solder surface of the electronic component 29 of the print substrate 22, which makes it difficult to perform the automated soldering. Since the printed circuit board 22 and the winding end portion 28 were connected by the work, the assembling workability was poor, and the vibration of the motor puts stress on the soldering portion, causing the winding end portion 28 to be disconnected near the solder portion. Then there was a problem.

[0006]

[Means for Solving the Problems]

 In order to solve the above problem, the present invention provides a stator with a pin to which a winding wound around the stator is wound and soldered, and a pin-shaped conductive metal into the hole of the printed board into which the pin is inserted. Is provided.

[0007]

[Action]

 The present invention connects the winding and the printed circuit board by inserting the pin to which the terminal end of the winding is soldered in the above into the hole of the printed circuit board and soldering the pin to the conductive metal provided in this hole. As a result, the assembly work can be improved, and the stress on the solder portion of the winding due to vibration can be reduced, so that disconnection of the winding can be suppressed.

[0008]

【Example】

 FIG. 1 is a block diagram of a DC brushless motor which is an example of a brushless motor according to an embodiment of the present invention, and FIG. 2 is a winding end portion, a pin and a print of a DC brushless motor which is an example of a brushless motor according to an embodiment of the present invention. It is an enlarged view of the connection part with a board. 1 and 2, 1 is a stator of a fixed part, 2 is a rotor magnet of a rotating part, 3 is a printed circuit board for mounting an electronic component 10 such as a hall sensor, and 4 is a rotatably supporting shaft 5. A bearing, 6 is a motor case, 7 is an assembly screw for assembling the motor case 6, and 8 is a winding portion of the stator 1. Reference numeral 9 is a winding terminal portion, 11 is a conductive pin for twisting and soldering the winding terminal portion 9, 12 is an eyelet-shaped conductive metal attached to the printed circuit board 3, and 13 is a printed circuit board 3 It is copper foil.

Assembly of the brushless motor configured as described above will be described below. The winding terminal portion 9 is wound around the pin 11 and soldered. A conductive metal 12 is soldered to the printed circuit board 3 so as to be electrically connected to the copper foil 13 of the printed circuit board 3. By making the soldered parts as described above and finally soldering the pin 11 and the conductive metal 12, the winding terminal 9 can be connected to the copper foil 13 of the printed circuit board 3. Since soldering can be performed from the side of the printed circuit board 3 where the electronic component 10 is disposed, manual soldering can be eliminated and assembly work can be improved. Further, the winding terminal end 9 does not move due to the vibration of the motor, so that the winding terminal end 9 of the solder portion can be prevented from being disconnected.

[0010]

[Effect of device]

 As described above, the brushless motor of the present invention can be improved in assembling property and quality.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a DC brushless motor which is an example of a brushless motor according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a winding terminal portion of a DC brushless motor, which is an example of a brushless motor according to an embodiment of the present invention, and a connection portion between a pin and a printed circuit board.

FIG. 3 is a configuration diagram of a DC brushless motor that is an example of a conventional brushless motor.

FIG. 4 is an enlarged view of a connecting portion between a terminal portion of a winding and a printed circuit board of a DC brushless motor which is an example of a conventional brushless motor.

[Explanation of symbols]

 1,20 Stator 2,21 Rotor magnet 3,22 Printed circuit board 4,23 Bearing 5,24 Shaft 6,25 Motor case 7,26 Assembly screw 8,27 Winding part 9,28 Winding end part 10,29 Electronic Parts 11 Pins 12 Conductive metal 13 Copper foil

Claims (1)

[Scope of utility model registration request] 1. A stator, a winding wound around the stator, a pin provided on the stator to which the winding is wound and soldered, and a printed circuit board into which the pin is inserted. A brushless motor, wherein eyelet-shaped conductive metal is provided in a hole into which the pin of the printed circuit board is inserted.