JPS6031410Y2 - Mounting structure of output device in small motor - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mounting structure for an output device of a small motor, such as a belt pulley, a gear, etc.

In the conventional mounting structure for an output device in a small motor, the shaft of the output shaft is usually D-cut, and the output device is screwed into the shaft.

However, this mounting structure has a strong mounting holding force and has the advantage that the output device does not spin idle even under somewhat heavy loads.
The disadvantage is that the man-hours required to process the D-cut and the machining of the screw holes are added, increasing the man-hours and increasing the cost considerably.

In addition, if the load is relatively small, there is a method of omitting the D-cut and fixing the output device only with screws, but this also requires adding the screws themselves, machining the screw holes, and installing the screws, which increases the cost. The reality was that the down was not measured.

In recent years, adhesives have made remarkable progress and some have become suitable for attaching output devices, and attachment with adhesives has come to be relatively common.

This method is extremely simple and has a relatively strong adhesive force, which is sufficient for practical use.However, in actual use, there is an optimum amount to use, and if the amount used is small, appropriate mounting strength cannot be obtained.
Also, if too much adhesive is used, excess adhesive will flow and get into the bearing metal, causing problems with motor rotation.

In particular, when the output device is mounted very close to the bearing metal, the use of adhesive requires considerable skill, and inexperienced workers must use their nerves to perform the work, which has the disadvantage of increasing man-hours. The advantages of installation were not discovered.

The present invention improves these drawbacks and provides a structure in which an output device can be attached very easily with adhesive by only performing simple processing.

Hereinafter, one embodiment of the present invention will be explained with reference to the drawings.

In Figures 1 and 2, 1 is the motor body, 2 is the shaft, 3 is the retaining ring, 4 is the thrust washer, 5 is the pulley that is the output device, and 6 is the washer for preventing the flow of adhesive. Preferable material.

7 is a bearing metal. The retaining ring 3 and the thrust washer 4 are fitted in advance while maintaining an appropriate thrust margin.

Before inserting the pulley 5, press the washer 6 to the retaining ring 3 of the shaft 2.

Next, adhesive is appropriately applied to the tip of the shaft 2, and the pulley 5 is inserted into the shaft 2 to the position of the retaining ring 3.

The adhesive is filled in the gap between the shaft 2 and the pulley 5, and if there is some excess, it flows to the bottom, but it is blocked by the washer 6, and passes through the thrust washer 4 to the bearing metal 7.
There is no possibility that it will leak out.

Now, the inner diameter of the washer 6 is suitably 3/1000 to 5110 mm minus the diameter of the shaft 2, and the inner diameter of the pulley 5 is suitably 0 to 27100 mm plus the diameter of the shaft 2.

As described above, the mounting structure of the output device in the small motor of the present invention includes a retaining ring fitted to the output shaft, a washer press-fitted to the output shaft on the shaft end side of the retaining ring, and the washer It consists of an output device inserted closer to the shaft end, and is characterized in that the output device is fixed to the output shaft with an adhesive, and conventionally it takes a considerable amount of man-hours to install the output device. However, even if adhesive is used, and even if the amount used is slightly increased, a washer can easily prevent the adhesive from flowing into the bearing metal, reducing costs and installation man-hours, and has great practical effects. It is.

Furthermore, it is particularly effective for small motors where the distance between the output device and the bearing metal cannot be maintained.

[Brief explanation of the drawing]

FIG. 1 is an external view of a small motor main body in an embodiment of the present invention, and FIG. 2 is an enlarged sectional view of an output device mounting portion of the motor. 2...Output shaft, 3...Retaining ring, 5...
...Pulley (output device), 6...Washer.

Claims (1)

[Scope of utility model registration request] The output device includes a retaining ring fitted into the output shaft, a washer press-fitted into the output shaft from the retaining ring to the shaft end side, and an output device further inserted from the washer to the shaft end side. A mounting structure for an output device in a small motor, in which the output device is fixed to the output shaft with an adhesive.