JPS61180549A - Brush holder supporting device of dc machine - Google Patents

Abstract

PURPOSE:To readily convert a brush angle by splitting brush mounting fittings, providing right and left side surfaces which are centered toward a brush mounting reference line, and using either one thereof. CONSTITUTION:Brush mounting fittings are split into mounting fittings 6, 7, and clamped by bolts 8 for the fittings. The fittings 6 of an insulator 10 side have surfaces A, B with angles centered at the right and left sides toward a brush mounting reference line. The brush angle is converted by mounting the fittings 7 on the surface A or B of the fittings 6.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a brush holder support device, and more particularly to a brush holder support device equipped with a brush attachment fitting suitable for use in a DC machine.

[Background of the invention]

The brush holder support device of the conventional DC machine was developed in 1973.
It is shown in Publication No. 0269.

An example of using an angled brush in the design is shown in Figure 4.
A cross section viewed from the -■ arrow is shown in Fig. 5.

The mounting reference line X of the brush 3 is oriented toward the Lg1 rotation center O of the commutator 1 (centrocentric), and the brush is mounted at an angle of θ with respect to the ia sliding surface.

The support fitting 11 is shifted by an amount CL from the mounting reference line X of the brush 3 in consideration of the space for replacing and inspecting the brush 3. At present, the relationship between the quality of rectification, the brush angle θ, and the direction of rotation has not been established.

That is, the reality is that it cannot be determined unless a rectification test is performed with respect to the direction of rotation, whether to set the leading angle as shown in FIG. 4 or the delay angle θ as shown in FIG. 6. Therefore, as a result of preliminary consideration, we manufactured it with an advance angle as shown in Figure 4. As a result of the first-class test, it became less necessary to modify the delay angle as shown in Figure 6.

The modification is that the brush 3 has an angle of θ, and the support bracket 1
1 is located at a distance of L from the brush mounting reference line Defects affecting parts are rare.

[Purpose of the invention]

An object of the present invention is to provide a 1ti11 child holder support device for a DC machine that can easily change the brush angle with respect to the rotation direction.

[Summary of the invention]

The present invention divides the brush mounting bracket into two parts, and provides two surfaces with the brush mounting reference line as the center axis, on the left and right, so that the brush angle can be easily changed by using ink on either the left or the right. There are characteristics.

[Embodiments of the invention]

An embodiment of the present invention is shown in FIGS. 1-3.

The brush mounting bracket is divided into a mounting bracket 6 and a mounting bracket 7, which are secured with mounting bracket bolts 8.

RT brush mounting reference lines X1. An angular A such that X2 is centripetal.

It has a B side. It can be easily replaced by attaching it as shown in Figure 1 when the angle is leading with respect to the rotation direction, and as shown in Figure 3 when it is at a lagging angle.

Since the mounting bracket A7 can be replaced by simply reversing the mounting bracket, there is no need to remanufacture or process the mounting bracket 6, the mounting bracket 7, the collector ring 14, and the rocker ring 13.

In the figure, 2 is a brush holder, 4 is a pigtail, 5 is a mounting bolt, 1O is an insulator, and 12 is a support bolt.

〔Effect of the invention〕

According to the present invention, the brush mounting bracket is divided into two parts, two mounting surfaces are provided on the left and right sides with the brush mounting reference line as the central axis, and by using either the left or right mounting surface, the brush angle can be easily changed with respect to the rotation direction. I can do it.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of a brush holder support device with an advance angle according to an embodiment of the present invention, FIG. 2 is a sectional view taken along arrow n-■ in FIG.
FIG. 3 is a block diagram of a brush holder support device with a lagging angle according to the present invention, FIG. 4 is a block diagram of a conventional brush holder support device with an advance angle, and FIG. 5 is a view taken from the ■-v arrow in FIG. 100 sections, No. 6
The figure is a configuration diagram of a conventional brush holder support device with a delay angle. 4...Pigtail, 5...Mounting pole), 6.7...
・Installation B) Metal fittings. t・
1~

Claims (1)

[Claims] 1. In a brush holder support device consisting of an angled brush, a brush holder, a mounting bracket, an insulator, and a support bracket, the mounting bracket is divided into two parts: a mounting side of the brush holder and a side of the insulator; A brush holder for a DC machine, characterized in that the two-split mounting surface of the mounting bracket on the insulating material side maintains an angle such that the mounting reference line of the brush is oriented toward the core, and there are two left and right surfaces on the back. Support device.