JPH0528919Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a brush holding device attached to a motor casing.

(Prior Art) Among conventional brush holding devices, for example, a brush holding device incorporated in a flat motor is constructed as shown in FIG.

This brush holding device 1 slidably holds in a brush holder 5 a brush 4 that supplies current to an armature 3 so as to cut the magnetic flux of a magnet 2 and rotate. The brush holder support 6 is attached to the motor casing 7.

In order to strengthen the support of the brush holder 5 in such a brush holding device 1, recently, as shown in FIG. It is inserted into the insertion hole 8.

(Problem to be solved by the invention) However, since the brush holder 5 is tightly fitted in the brush holder fitting hole 8 of the brush holder support 6, adhesive S is applied during this fitting operation.
The problem is that the brush holder comes out of the brush holder insertion hole 8 (see FIG. 6), and the adhesive fixation becomes insufficient.

Further, the application of the adhesive S is carried out using a dispenser or a brush, but in this case, the area to which the adhesive S should be applied is narrow, and the amount of adhesive S to be applied may be adjusted, and the brush holder 5 must be brushed after application. It is necessary to fully consider the waiting time etc. until the product is inserted into the holder support 6, and furthermore, since the application work requires gripping the application tool, freedom in this application work is not available and the work becomes complicated. There is.

The present invention was made in order to solve the above-mentioned drawbacks and problems, and the purpose is to provide a brush holding device that can simplify the adhesive application work and that allows the applied adhesive to adhere well. shall be.

[Structure of the invention] (Means for solving the problem) In order to achieve the above object, the present invention includes a brush that cuts off the magnetic flux of the magnet and supplies current to the armature in a brush holder. A brush holding device that slidably holds the brush holder and fixes the brush holder in a brush holder insertion hole of a brush holder support with an adhesive,
An annular gap is formed between the brush holder inserted into the brush holder insertion hole and an inner circumferential surface of the brush holder insertion hole, and an injection port for filling the adhesive into the annular gap. This is a brush holding device characterized in that the brush holding device is formed so as to communicate with each other.

(Function) In the present invention configured as described above, the adhesive can be applied after the brush holder is inserted into the brush holder support and the brush holder can be fixed to the brush holder support, so the adhesive application work can be simplified. This becomes extremely simple, and the connection between the brush holder and the brush holder support is also ensured.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of essential parts showing an embodiment of the present invention, and FIG. 2 is a sectional view showing an adhesive state in the same embodiment. A code is attached.

This brush holding device, similar to the one shown in FIG.
is slidably held in a brush holder 5, and this brush holder 5 is fitted into a brush holder support 6.

This brush holder support 6 has a concave part 10 formed in the lower bulging part 6a so as to be held by the motor casing 7, and the motor casing 7 is fitted into this concave part 10. In the example brush holding device, the brush holder insertion hole 8 formed in the brush holder support 6 is
An annular gap 11 is formed between the brush holder 5 inserted therein and the inner peripheral surface 8a of the brush holder insertion hole 8, and adhesive S is applied to this annular gap 11 from the outside of the brush holder support 6. I am trying to fill it up. In the embodiment shown in FIG. 2, the annular gap 11 is so small that the edge of the brush holder insertion hole 8 is chamfered. Further, an injection port 11a is provided in this annular gap 11,
When the adhesive S is injected into the injection port 11a using a dispenser D or the like, the adhesive S flows toward the annular gap 11, and the adhesive S flows around the brush holder 5 in an annular shape. It will be established.

Next, the operation of the above embodiment will be explained.

To attach the brush holder 5 to the brush holder support 6, first attach the brush holder support 6 to the motor casing 7, and then attach the brush holder 5 to the motor casing 7.
into the brush holder insertion hole 8. After this insertion, the adhesive S is injected from the injection port 11a. This adhesive S flows along the annular gap 11 between the brush holder 5 and the brush holder support 6, and surrounds the outer periphery of the brush holder 5 in a headband shape. This adhesive S
When it dries and hardens, the brush holder 5 becomes securely attached to the brush holder support 6, as shown in FIG.

In this case, the application of the adhesive S is simply injecting the adhesive S into the injection port 11a from the dispenser D, and the injected adhesive S is applied to the annular gap 11.
Since the adhesive flows along the groove-shaped portion between the adhesive S and the brush holder 5, the application work can be performed without worrying about the amount of adhesive S or the width of the permissible application range. Furthermore, it becomes unnecessary to manage application tools and wait time until the brush holder 5 is inserted into the brush holder support 6 after application.

Therefore, the work of applying the adhesive S is extremely simple, and since the adhesive S is sufficiently circulated around the brush holder 5,
The adhesion between the brush holder support 6 and the brush holder support 6 is also improved.

FIG. 3 shows another embodiment of the present invention,
The annular gap 11 is formed in the inner part of the brush holder insertion hole 8, and the annular gap 11 has an inlet 11a and the annular gap 11 formed by a passage passing through the brush holder support 6. It's starting to communicate.

[Effect of the invention] As is clear from the above explanation, according to the brush holding device according to the present invention, the brush holder inserted into the brush holder insertion hole and the inner circumferential surface of the brush holder insertion hole are While forming an annular gap in the
Since this annular gap is formed so as to communicate with the injection port for filling the adhesive, the adhesive application work can be simplified, and the applied adhesive can have a good adhesion state.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a main part showing one embodiment of the present invention, FIG. 2 is a sectional view of the embodiment shown in FIG. 1, and FIG. 3 is a main part showing another embodiment of the present invention. cross section,
FIG. 4 is a half-sectional view showing a conventional flat motor, FIG. 5 is a perspective view showing an assembled state of a brush holding device of the same motor, and FIG. 6 is a sectional view of the same brush holding device. 2...Magnet, 3...Amateur, 4...
Brush, 5...Brush holder, 6...Brush holder support, 8...Brush holder insertion hole, 8a...
...Inner peripheral surface, 11...Annular gap, 11a...Inlet, S...Adhesive.

Claims (1)

[Scope of utility model registration request] A brush 4 that cuts the magnetic flux of the magnet 2 and supplies current to the armature 3 so as to rotate is slidably held in a brush holder 5, and the brush holder 5 is inserted into the brush holder insertion hole 8 of the brush holder support 6. In the brush holding device, the brush holder 5 is fitted into the brush holder insertion hole 8 and the inner circumferential surface 8a of the brush holder insertion hole 8 has an annular shape. Gap part 1
1, and is formed so that this annular gap 11 and an injection port 11a for filling the adhesive S communicate with each other.