JPH05244757A - Brushless motor - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a brushless motor used in various electric devices, in which a stator core and a winding processing terminal are integrated into a thin and compact brushless motor. [Structure] At least two winding processing terminals 9 projecting from the projecting tooth portions 13 of the printed circuit board side stator core 1a of the brushless motor are provided, and windings are passed between the winding processing terminals 9. By electrically connecting the line portion 12 to the printed circuit board 6, the height dimension of the brushless motor can be reduced, and the motor can be made smaller and thinner. Further, since the stator core can be automatically attached to the printed board, the number of assembling steps can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for automatically assembling an ultra-compact and ultra-thin brushless motor.

[0002]

2. Description of the Related Art In recent years, motors have been designed so that they can be automatically assembled, and with the trend toward lighter weight, smaller size, and thinner sets, ultra-miniaturization and ultra-thinning are required.

A conventional brushless motor will be described below. FIG. 4 shows the structure of a stator of a conventional brushless motor. As shown in FIG. 4, 1 is a stator core, and 2 is an upper insulator, which is fitted and fixed to the stator core 1. A lower insulator 3 is fitted and fixed to the stator core 1. 4 is a winding wound around the stator core 1. 6 is a printed circuit board.
Reference numeral 5 is solder for attaching the winding start and winding end of the winding wire 4 to the printed circuit board 6. Further, FIG. 5 shows the structure of the stator of another conventional brushless motor, and the same parts as those of FIG. 4 are omitted and only different structures will be described. 2a
Is fitted and fixed to the stator core 1 by the upper insulator. A lower insulator 3a is fitted and fixed to the stator core 1. Reference numeral 7 denotes a winding processing pin press-fitted into the lower insulator 3a, which is inserted into the printed board 6 and is attached to the printed board 6 by solder 5 on the surface opposite to the attachment surface of the stator core 1.
Further, FIG. 6 shows a structure of a stator of another conventional brushless motor. The same parts as those of FIG. 4 are omitted and only different structures will be described. Reference numeral 3b is a lower insulator, to which the terminal 8 having a flat mounting surface is integrally fixed. The lower insulator 3b is fitted and fixed to the stator core 1. The upper insulator 2b is fitted and fixed to the stator core 1. The winding start and the winding end of the winding wire 4 are wound around the terminal 8 having a flat mounting surface, and the printed wiring board 6 is electrically connected and attached by the solder 5.

The operation of the brushless motor constructed as above will be described below. In FIG. 4, the winding 4 is energized from the solder 5 portion attached to the printed circuit board 6 at the winding start and winding end. Further, in FIG. 5, the winding processing pin 7 is press-fitted into the lower insulator 3a and the winding processing pin 7 having the winding start and winding end of the winding 4 attached thereto is energized to the winding 4 from the solder 5 portion attached to the printed board 6. .. In FIG. 6, the winding start and the winding end of the winding wire 4 are attached to the terminal 8 integrally fixed to the lower insulator 3b, and the winding wire 4 is energized by the solder 5 portion attached to the printed circuit board 6. , The brushless motor rotates.

[0005]

However, as shown in FIG. 4, the winding start and the winding end of the winding 4 are arranged on the printed circuit board 6
It is not possible to automate it because the positions of the winding start and winding end of the winding 4 are not fixed, and it has to be done manually, which is troublesome. Had. Further, as shown in FIG. 5, the winding processing pin 7 is attached to the lower insulator 3a.
, And winding process is performed, and automation is possible, but since the soldering surface is the surface on the opposite side of the stator core 1,
There is a problem in that it requires space in terms of height and is not suitable for thinning. Furthermore, as shown in FIG. 6, since the winding start and the winding end of the winding wire 4 are wound around the terminal 8 whose mounting surface integrally fixed to the lower insulator 3b is flat, and are electrically bonded and fixed with the solder 5, It is necessary to lengthen the space of the flat portion of the terminal 8 around which the winding 4 is wound, which is not suitable for downsizing.

The present invention solves the above-mentioned problems of the prior art. The winding process is automated with a simple structure, and the stator core and the printed circuit board can be fixed on the same surface. An object of the present invention is to provide an improved brushless motor.

[0007]

In order to achieve this object, the brushless motor of the present invention is provided with at least two insulation treatments protruding from the projecting tooth portions of the printed circuit board side stator core or the printed circuit board side insulator. A winding processing terminal is provided, and a winding is passed between the winding processing terminals, and electrically connected to the printed circuit board by soldering at the crossover portion.

[0008]

With this construction, the first means connects the stator core on the printed circuit board side, and the second means connects the winding start point between the winding processing terminals protruding from the projecting teeth of the printed circuit board side insulator. After the connection, it is wound through the other winding processing terminal. Next, after winding the wound winding through the winding processing terminal, the winding end can be connected to the other winding processing terminal to automate winding assembly. .. Further, since the electric connection with the printed circuit board can be made at the connecting wire portion that extends between the winding processing terminals, the space can be reduced. Further, even when the brushless motor is assembled, since the winding processing terminal is integrated with the protruding tooth portion, the position is accurately determined, and the electrical connection with the printed circuit board can be automated.

[0009]

(Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings. The same parts as those of the conventional structure are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIGS. 1 and 2, the stator core 1a on the printed circuit board side has a structure in which the protruding tooth portion 13 has two or more terminals 9 for insulation-treated winding. The winding start of (1) is automatically wound around one winding processing terminal 9, and then the winding is performed through the other winding processing terminal 9. Next, the wound winding 4 is connected to the winding processing terminal 9
Then, the winding end of the winding 4 is automatically wound around the other winding processing terminal 9. Further, the solder 5 for electrical connection with the printed circuit board 6 is also configured to be performed by the connecting wire portion 12 that extends between the winding processing terminals 9.

The operation of the brushless motor configured as described above will be described with reference to FIG. The winding 5 is energized by the solder 5 portion in which the connecting wire portion 12 that crosses between the winding processing terminals 9 is electrically joined to the printed circuit board 6, and the brushless motor rotates.

As described above, according to this embodiment, the winding processing terminal 9 is provided on the protruding tooth portion 13 of the printed circuit board side stator core 1a, and the connecting wire portion 12 is electrically joined to the printed circuit board 6. It is possible to automate the winding process and the attachment of the stator core 1 to the printed circuit board 6. Further, since the height dimension in which the stator core 1 is attached to the printed circuit board 6 becomes small, the brushless motor can be made compact and thin.

(Second Embodiment) A second embodiment of the present invention will be described below with reference to the drawings. The same parts as those of the conventional structure are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIG. 3, the printed circuit board side insulator 3c has a structure in which the projecting tooth portion 14 has two or more insulating-processed winding processing terminals 10. Is automatically wound around one winding processing terminal 10, and then wound through the other winding processing terminal 10. Next, after winding the wound winding 4 through the winding processing terminal 10, the winding end of the winding 4 is automatically wound on the other winding processing terminal 10. Further, the electrical connection with the printed circuit board 6 is also performed by the connecting wire portion 12 that crosses between the winding processing terminals 10.

In the first embodiment, the winding processing terminal 9
Although it is configured to be taken out straight from the projecting tooth portion 13, it goes without saying that it may be configured to be straight or hook type from the inside or outside of the projecting tooth portion 13. Although the winding 4 is wound around the winding processing terminal 10 in the second embodiment, it goes without saying that the winding 4 may be hooked.

The operation of the brushless motor configured as above will be described with reference to FIG. Example 1
In the same manner as above, the winding 4 is energized by the solder 5 portion in which the crossover portion 12 is electrically joined to the printed circuit board 6, and the brushless motor rotates.

As described above, according to the present embodiment, the winding processing terminal 10 is provided on the projecting tooth portion 14 of the printed circuit board side insulator 3c, and is electrically connected to the printed circuit board 6 at the crossover portion 12. The same effect as described in Example 1 can be obtained.

[0018]

As is apparent from the above description of the embodiments, according to the present invention, in the first means, the stator core of the printed circuit board is integrated, and in the second means, the winding is integrally formed with the protruding tooth portion of the insulator of the printed circuit board. By providing a wire processing terminal,
It is possible to automate the winding process, and the stator core can be attached by soldering it to the printed circuit board at the crossover part that crosses between the winding process terminals and attaching the stator core, so the height dimension can be reduced. The brushless motor can be made smaller and thinner. Furthermore, since the stator core can be automatically attached to the printed circuit board, an excellent brushless motor that can reduce the number of assembly steps can be realized.

[Brief description of drawings]

FIG. 1A is a front view of a stator assembly of a brushless motor according to a first embodiment of the present invention, and FIG. 1B is a bottom view of the stator assembly.

FIG. 2A is a front view of the stator core of the same printed circuit board, and FIG. 2B is a bottom view of the stator core of the same printed circuit board.

FIG. 3 is a front view of a stator assembly of a brushless motor according to a second embodiment of the present invention.

FIG. 4 is a front view of a stator assembly of a conventional brushless motor.

FIG. 5 is a front view of a stator assembly of a conventional brushless motor.

FIG. 6 is a front view of a stator assembly of a conventional brushless motor.

[Explanation of symbols]

 1a Printed circuit board side stator core 3c Printed circuit board side insulator 4 Winding 5 Solder 6 Printed circuit board 9,10 Winding processing terminal 12 Crossover part 13,14 Projecting tooth part

Claims (3)

[Claims] 1. A winding processing terminal having at least two insulating-processed winding processing protruding from a protruding tooth portion of a stator core of a printed circuit board, the winding being passed between the winding processing terminals,
A brushless motor that is electrically connected to the printed circuit board with solder at the crossover. 2. The brushless motor according to claim 1, wherein the winding processing terminal is integrated with the printed circuit board side stator core. 3. The brushless motor according to claim 1, wherein the winding processing terminal is integrated with the printed board side insulator.