KR19990036121U - Brush Holder Assembly for Motor Alternator - Google Patents

Abstract

This paper relates to a brush holder assembly for an alternating current generator. In the conventional brush holder, the brush holder rotates around the bracket in connection with the slip ring end frame, and is connected to a voltage regulator or a rectifier around the vehicle. There was a problem that the rectification action and voltage adjustment work after power generation is not smoothly performed by the vibration, etc., in the present design, the slip ring end frame 11 is formed by forming a flow preventing groove 30 on the bottom of the brush holder 25. Combination with the flow preventing projections 31 formed to protrude in the brush holder 25, characterized in that the flow and rotation is prevented when fastening, by preventing the flow and rotation when the brush holder is fastened so as not to be connected to other parts. It can contribute to generator performance and quality stability.

Description

Brush Holder Assembly for Motor Alternator

The present invention relates to a brush holder assembly for an automotive alternator, and more particularly, to an improved brush holder to prevent flow when the brush holder is fastened so that interference with the rectifier is eliminated.

The automotive alternator is one of the engine electronics, which is connected to the engine and the belt to charge the consumed battery power and to supply the current required for operation with other electronics.

In the alternator as described above, a commutator arranged in a ring-shaped member of an insulator in which a lead wire drawn from a rotor coil wound on a rotor fixed to a rotor shaft that receives rotational force from a pulley fixed to the tip is fixed to one end of the rotor shaft. To the slip ring that is configured to connect to the segment,

The outer side of the slip ring is provided with a brush holder for protecting the slip ring.

The inner side of the brush holder is inserted into the carbon brush is spring-loaded with the slip ring is always in contact with the slip ring to make an electrical connection with the commutator segment.

Conventionally, when fixing the brush holder as described above on the slip ring end frame is fastened with a screw through the fixing hole of the bracket protruding to the side of the brush holder.

In the prior art as described above, the brush holder is rotated about the bracket in the process of fastening the brush holder and connected to the voltage regulator or the rectifier around, so that the rectifying action and the voltage adjustment work after power generation are smoothed due to the vibration generated during driving. Provide the cause that prevents this from being done.

Accordingly, the present invention has been made to solve the above problems, and to prevent the flow and rotation when the brush holder is fastened on the slip ring end frame to exclude the connection with other parts to improve the power generation performance. do.

1 is an overall cross-sectional view of an alternator for explaining the technique of the present invention.

Figure 2 is a left side view of the generator showing a state in which the brush holder of the present invention is mounted by removing the rear cover.

Figure 3 is a bottom perspective view of the brush holder to which the technique of the present invention is applied.

Figure 4 is a cross-sectional view taken an attached state of the brush holder of the present invention.

5 is a bottom perspective view of a brush holder to which the prior art is applied.

Explanation of symbols used in the main part of the drawing

11; Slip Ring End Frame

20; Slip ring

25; Brush holder

30; Flow prevention groove

31; Flow prevention protrusion

50; Alternator

Hereinafter, with reference to the accompanying drawings will be described the configuration and operation of the present invention for achieving the above object.

1 is an overall cross-sectional view of an alternator for explaining the technique of the present invention, Figure 2 is a left side view of the generator shown by removing the rear cover of the brush holder of the present invention, Figure 3 Bottom perspective view of the applied brush holder, Figure 4 is a cross-sectional view taken a state in which the brush holder of the present invention is mounted, Figure 5 will be described together as a bottom perspective view of a brush holder to which the prior art is applied.

The configuration of the alternator 50 is as shown in FIG.

The stator assembly 14 including the stator core 12 and the stator coil 13 is press-fitted into the inner center of the driver and the slip ring end frames 10 and 11,

The rotor shaft 16 supported by the front and rear bearings 15 is provided in the lateral direction of the stator assembly 14, and the rotor coil 17 and the rotor core 18 in the middle of the rotor shaft 16 are provided. A rotor assembly 19 composed of) is provided.

The rear end of the rotor shaft 16 is provided with a slip ring 20 to be connected to the rotor coil 17, the outside of the brush 26 accommodated in the brush holder 25 fixed to the slip ring end frame 11 Is connected to and configured to supply power for magnetization of the rotor assembly 19.

Conventionally, as shown in Figure 5,

The brush holder 1 is fixed to the slip ring end frame only through the fixing hole 3 of the bracket 2 protruding laterally without a separate fixing means on the bottom of the brush holder 1. The whole turns to stay in contact with the voltage regulator or rectifier.

In the above state, the brush holder, the voltage regulator, and the rectifier frequently make contact with each other due to the vibration generated during the actual driving.In this case, the brush holder damages the peripheral parts such as the voltage regulator or the rectifier, so that the generated current cannot be adjusted smoothly. There are problems such as the effect on the stable quality of the surface area.

In the present invention in consideration of the above problems, as shown in Figure 3,

When the slip ring end frame 11 and the bracket 26 of the brush holder 25 are fastened to the bottom of the brush holder 25 with the screw 27, the brush holder 25 can be prevented from flowing or rotating. The flow preventing groove 30 is formed.

The flow preventing groove 30 is combined with a flow preventing protrusion 31 formed to protrude on the slip ring end frame 11 to prevent rotation and flow that may occur when the brush holder 25 is fastened.

When the brush holder 25 is fastened to the slip ring end frame 11, the flow preventing groove 30 formed on the bottom surface of the brush holder 25 and the flow preventing protrusion 31 on the slip ring end frame 11 are formed. ) And then fasten with the screw 27 of the brush holder 25 to prevent the brush holder 25 from flowing or rotating during the fastening process.

The present invention as described above has the effect that it can contribute to the performance and quality stability of the generator by preventing the flow and rotation when the brush holder is fastened so as not to be connected to other parts.

Claims (1)

A stator assembly 14 including a stator core 12 and a stator coil 13 in the inner center of the driver and slip ring end frames 10 and 11 and press-fitted; A rotor assembly (16) provided with a rotor shaft (16) installed in the transverse direction of the stator assembly (14) and a rotor coil (17) and a rotor core (18) in the middle thereof; The rear end of the rotor shaft 16 is connected to the slip ring 20 connected to the rotor coil 17 and the brush 26 accommodated in the brush holder 25 fixed to the slip ring end frame 11 outside thereof. An alternator 50 configured to supply power for magnetization of the rotor assembly 19; A flow preventing groove 30 is formed on the bottom of the brush holder 25 to be combined with a flow preventing protrusion 31 protruding from the slip ring end frame 11 so that the flow and rotation of the brush holder 25 is fastened. Brush holder assembly for a motor alternator characterized in that it is prevented.