Motor with speed reducer, and its manufacturing method

Abstract

An end bell supports brush arms which hold brushes, and allows a pair of input terminals connected to the corresponding brush arms to extend therethrough and to project to the exterior thereof. A terminal holder having a pair of terminals incorporated therein is provided. The paired terminals include a pair of input connection portions contact-connected to the pair of corresponding input terminals, a pair of external terminals for establishing electrical connection outside the motor, and conductors for establishing electric wiring between the input connection portions and the external terminals. The terminal holder is assembled to the end bell from the outside of the motor section with a clearance formed therebetween, and electric connection is established between the paired input terminals and the paired input connection portions.

Description

technical field [0001] The present invention relates to a motor with a speed reducer of a structure that can be used, for example, in automotive electric equipment and a method of manufacturing the same. Background technique [0002] Small motors are widely used in, for example, door lock opening and closing devices for automobiles, mirror drive and storage devices for electric mirrors, air conditioners, etc., and electric equipment for automobiles. Such small motors and their peripheral devices are required to reduce the electrical noise generated during operation, and limit values ​​have been set in the world. [0003] In order to reduce electrical noise, in small motors, it is necessary to mount electrical components such as capacitors and choke coils directly into the motor. Figure 8 is a diagram showing an example of a noise canceling circuit. As shown in the figure, the noise canceling circuit is composed of choke coils L1, L2, capacitors C1, C2, C3, variable resisto...

AI Technical Summary

Problems solved by technology

The motor shown in the figure is efficiently arranged in the housing by arranging the electrical components on both sides of the insulating substrate in order to realize the miniaturization of the device. Eliminates the need to change the assembly of the motor itself due to changes in the circuit

[0006] In particular, although the arm brush holding the brush on the front end of the spring plate-shaped arm has the advantage of being able to be manufactured at low cost, it requires a large space. Therefore, when using such an arm brush, it is used to Insufficient space to install electrical components into the motor housing

In recent years, noise reduction has been demanded, and various sizes of choke coils are required. However, there are restrictions on the size of choke coils in order to incorporate choke coils.

In particular, in high output motors, it is necessary to assemble a coil with a large outer diameter and length of the choke coil, but in this case, it cannot be installed in the case

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