JP3031896U - Motor bearing structure - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] A small motor for hobby or the like can be used for a long period of time, is economical, is easy to maintain, and can be used according to a user's taste. A bearing portion of a rotor provided on an end cover is detachably configured.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a bearing structure of a small motor for hobbies and the like.

[0002]

[Prior art]

 Conventionally, the bearings of general small motors for hobbies and the like are completely integrated with the end cover.

[0003]

[Problems to be solved by the device]

 The bearings of general small motors such as those for hobbies as described above are completely integrated with the end cover, so if the bearing wears due to continued use for a long period of time, not only the end cover but also the entire end cover. In addition, the entire motor could become unusable, which was extremely uneconomical.

The present invention has been made in view of the above circumstances, and the bearing portion of the rotor is detachably attached to the end cover so that the bearing portion can be used for a long period of time by replacing the worn bearing portion. In addition to being economical, the bearing state of the bearing can be judged at a glance, maintenance is easy, and the bearing structure of the motor can be used according to the taste of the user. The purpose is to

[0005]

[Means for Solving the Problems]

 In the present invention, the bearing portion of the rotor provided on the end cover is detachable, and preferably the bearing portion is integrally provided in advance on one of the divided end covers. Is.

[0006]

[Embodiment of device]

 An embodiment of the present invention will be described below with reference to the drawings. 1 is a longitudinal sectional view of an end cover portion showing an embodiment of a motor bearing portion structure of the present invention, FIG. 2 is a front view of an end cover portion showing another embodiment, and FIG. FIG. 4 is an overall vertical sectional view of the motor.

As shown in FIG. 4, the motor includes a rotor 3 including a rotary shaft 1 and a core 2 laminated on the rotary shaft 1, a magnet 5 provided on an inner peripheral surface of a motor case 4, and a magnet 5. And other members.

In order to rotatably support the rotor 3 inside the magnet 5 provided on the inner peripheral surface of the motor case 4, one end of the motor case 4 is opened, and the end cover is provided in the opening. 6 is mounted, and bearings 7 and 8 for supporting both ends of the rotary shaft 1 of the rotor 3 are provided in the end cover 6 and the motor case 4, respectively.

The present invention mainly enables the bearing 7 provided on the end cover 6 to be replaceable.

First, the embodiment shown in FIG. 1 will be described. In this embodiment, the end cover 6 attached to the opening of the motor case 4 is divided into an end cover main body portion 6a directly attached to the motor case 4 and an end cover bearing portion 6b having a bearing 7. It is configured.

Then, the end cover body 6a is mounted in the opening of the motor case 4, the end cover bearing 6b is fitted to the end cover body 6a, and the motor 9 It is configured to be attached to the case 4.

As described above, the end cover bearing portion 6b is configured to be detachable from the motor case 4 side, and in the illustrated embodiment, the end cover main body portion 6a, so that the motor can be replaced by replacing the worn bearing portion 7 with the motor. It is economical because it can be used for a long period of time, and the wear state of the bearing 7 can be determined at a glance, and maintenance is easy.

Further, FIG. 2 and FIG. 3 show another embodiment. Also in this embodiment, the end cover 6 mounted in the opening of the motor case 4 has an end cover body 6a directly mounted on the motor case 4 and an end cover bearing having a bearing 7. It is divided into parts 6b.

The end cover bearing portion 6b can be attached to the end cover main body portion 6a by one-touch.

That is, the locking pieces 10 and 10 are formed in advance on the outer peripheral facing portion of the end cover bearing portion 6b, and the base portion and the locking piece 10 of the end cover bearing portion 6b are provided on the end cover body portion 6a side. 10 is preliminarily formed with an opening 11, and the base of the end cover bearing portion 6b is fitted into the opening 11 to rotate the end cover bearing portion 6b. The end cover body 6a is tightly engaged and fixed inside the opening 11.

Also in this embodiment, as in the embodiment shown in FIG. 1, it is economical and maintenance is easy.

In each of the above-described embodiments, the bearings are integrally provided in advance on one of the divided end covers, so that it is possible to replace the bearings in a smaller size than when the small bearings are fixed to the end covers.

The end cover bearing portion 6b can be made of resin or oilless metal. When the end cover bearing portion 6b is made of resin, oilless metal or ball bearing can be selected. In this case, the bearing as a part is unnecessary and the heat dissipation is good.

Further, in any of the above-mentioned embodiments, the end cover body 6a and the end cover bearing portion 6b can be used in accordance with the user's taste, such as changing the material and color of the end cover body portion 6a. It can be expected to spread in various ways.

[0020]

[Effect of device]

 According to the present invention, since the bearing portion is detachably attached to the end cover, the motor can be used for a long time by replacing the worn bearing portion, which is economical, and the wear state of the bearing portion can be judged at a glance. It is possible and easy to maintain. Furthermore, it is possible to use it according to the taste of the user, such as using bearings with different materials and colors.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of an end cover portion showing an embodiment of a bearing portion structure of a motor according to the present invention.

FIG. 2 is a front view of an end cover portion showing another embodiment.

FIG. 3 is a vertical cross-sectional view of FIG.

FIG. 4 is an overall vertical sectional view of a motor.

[Explanation of symbols]

 1 rotating shaft 4 motor case 6 end cover 6a end cover body 6b end cover bearing

Claims (2)

[Scope of utility model registration request] 1. A bearing portion structure for a motor, wherein a bearing portion of a rotor provided on an end cover is detachable. 2. The bearing structure for a motor according to claim 1, wherein the bearing is integrally provided in advance on one of the divided end covers.