KR20030018539A - Brush abration reduced apparatus of starter - Google Patents

Abstract

PURPOSE: A brush wear reduction apparatus for a starter is provided to prevent wear of brush by radiating the heat generated during the friction of the brush, while achieving improved performance of the starter. CONSTITUTION: An armature equipped with a commutator is mounted at the center of a field part arranged within a housing. A brush(7) which is elastically supported at a brush holder(5) through a spring(6), is connected to the commutator. The brush holder is equipped, at an outer surface thereof, with a heat sink(8) having a plurality of convex-concave parts(9) so as to radiate the heat transmitted from the brush. Since the heat generated from the friction of the brush is transferred to the heat sink and discharged, wear of the brush is significantly reduced.

Description

Starter's Brush Wear Reduction Device {BRUSH ABRATION REDUCED APPARATUS OF STARTER}

The present invention is to supply a power to the starter for the vehicle to drive the amateur, the brush is provided for the power supply to the commutator installed on one side of the amateur and the brush holder for holding the brush is provided with a heat radiation means the brush The high heat generated by the friction of the heat dissipation, and the brush wear reduction device of the starter to significantly reduce the wear rate of the brush by the heat dissipation action.

In general, a starter installed for starting a vehicle is composed of an armature that is a rotor and a field part that is a stator, and a rectifier for rectifying is installed at one end of the armature, and carbon is usually supplied to supply power to the battery through the rotating commutator. By installing and using a brush of the material, the brush is made to conduct electricity while making a surface contact with the commutator.

In addition, the brush acting as described above is provided with a brush holder incorporating the brush for easy connection even in a worn state, since the brush is connected with friction with the commutator, and the brush holder is provided with an elastic means. One end of the brush is connected to a lead wire introduced through the through hole, and the lead wire is connected to the battery, and the ground terminal is connected to one end of the brush holder.

On the other hand, the conventional brush holder is configured as described above, the elastic means such as a spring is inserted into the free state therein, the brush is inserted into the state receiving the elastic means of the elastic means and the elastic means in the center of the brush It was configured to exert elasticity and formed a through hole at the position where the lead of the brush is drawn in, and was configured to discharge the powder of the brush rubbed with the commutator through the through hole.

However, such a conventional one is generating instantaneous high heat while the brush is causing rapid friction with the commutator, and since the high heat state continues during the operation time of the starter, the brush is in a high heat state, so There was a closed end that the wear rate was high, there is a problem that the brush wear is increased when the starter is continuously operated in accordance with the continuous running of the vehicle because the high heat due to the friction of the brush is not easily released.

The present invention has been made in view of the above-described conventional problems, the present invention is to supply a power to the starter for the vehicle to drive the amateur, the brush for supplying power to the commutator installed on one side of the amateur The brush holder for installing and holding the brush is provided with a heat dissipation means to dissipate high heat generated by friction of the brush and to reduce the wear of the starter to greatly reduce the wear rate of the brush by the heat dissipation action. It is intended to provide an apparatus, which will be described below in detail with reference to the accompanying drawings.

1 is a block diagram showing the structure of a general starter

2 is a block diagram showing a brush holder structure of the present invention

3 is a cross-sectional view of the brush holder of the present invention with a heat sink.

Explanation of symbols on the main parts of the drawing

1: housing

2: field part

3: amateur

4: commutator

5: brush holder

6: spring

7: brush

8 heatsink

9: uneven portion

An armature (3) having a commutator (4) installed on one side is installed at the center of the field portion (2) installed in the housing (1), and the commutator (4) is elastically installed on the brush holder (5) by a spring (6). In the case where the brush 7 is connected, a heat sink 8 formed of a plurality of uneven parts 9 is formed on the outer surface of the brush holder 5 to release the high heat transmitted from the brush 7. It is configured to

Referring to the operation of the present invention configured as described above are as follows.

An armature (3) having one side commutator (4) is installed at the center of the field part (2) installed in the housing (1), and the commutator (4) is elastically installed in the brush holder (5) with a spring (6). When power is applied through the brush 7 in a state in which the brush 7 to be connected is installed, the applied power is applied to the armature 3 through the commutator 4, and to the field part 2. As the magnetic action occurs between the applied power source, the armature 3 rotates.

When the armature 3 is rotated as described above, the brush 7 connected to its one commutator 4 is rubbed in a connected state, and high heat is generated according to the friction and high heat generated by the friction. Since the heat is transferred to the heat sink 8 formed of the plurality of uneven parts 9 on the outer surface of the brush holder 5, the heat of the brush 7 is lowered, and the heat radiation from the brush 7 is reduced. Accordingly, deterioration of the brush 7 can be prevented, and wear rate due to deterioration of the brush 7 can be greatly reduced.

As described above, the present invention can prevent deterioration of the brush 7 by dissipating high heat generated while the brush is rubbed as described above, and greatly prevents wear of the brush 7 due to the prevention of deterioration. Since it is possible to reduce the life of the brush (7) can be longer, and the frictional force of the brush (7) to improve the starter performance by smoothing the operation of the starter has a characteristic of the lighting that can be improved will be.

Claims (1)

An armature (3) having a commutator (4) installed on one side is installed at the center of the field portion (2) installed in the housing (1), and the commutator (4) is elastically installed on the brush holder (5) by a spring (6). In the case where the brush 7 is connected, a heat sink 8 formed of a plurality of uneven parts 9 is formed on the outer surface of the brush holder 5 to release the high heat transmitted from the brush 7. Brush wear reduction device of the starter, characterized in that configured to.