KR19990036864U - Brush holder for automotive alternator. - Google Patents

Abstract

The present invention relates to a brush holder of an AC alternator for automobiles. In the conventional brush holder, the brush holder rotates around the bracket in the process of fastening with the slip ring end frame, so that the brush holder 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 the power generation is not performed smoothly by the vibration.

In the present invention, the flow prevention bar 30 is formed on the bottom of the brush holder 25 and coupled with the flow preventing groove 31 formed in the slip ring end frame 11 to the external pressure when the brush holder 25 is fastened or fastened. It is characterized in that the flow is prevented by.

It can contribute to the performance and quality stability during power generation by preventing flow and rotation when connecting the brush holder to prevent it from being connected with other parts.

Description

Brush holder for automotive alternator.

The present invention relates to a brush holder of 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.

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

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. A slip ring is connected to a slip ring configured to be connected to a segment, and a brush holder is provided outside the slip ring to protect 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 a cause to prevent it from doing so.

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 bottom perspective view of the brush holder of the present invention.

3 is a bottom view and a front view of FIG. 2.

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 applied with the prior art.

Explanation of symbols used in the main part of the drawing

11; Slip Ring End Frame

25; Brush holder

30; Flow prevention bar

31; Flow prevention groove

32,33; spin

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 bottom perspective view of the brush holder of the present invention, Figure 3 is a bottom view and a front view of Figure 2, Figure 4 is a brush of the present invention Fig. 5 is a cross-sectional view of a holder mounted state, which will be described together with a bottom perspective view of an applied brush holder of the prior art.

1, the stator assembly 14 including the stator core 12 and the stator coil 13 is press-fitted in the center of the inner side of the driver and the slip ring end frames 10 and 11, as shown in FIG. 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 so that the power supply necessary for magnetization of the rotor assembly 19 can be supplied.

Conventionally, as shown in FIG. 5, the clamping force of the screw is fixed on 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. As a result, the entire brush holder 1 is rotated to be in contact with the voltage regulator or the rectifier.

In the above state, the brush holder, the low pressure regulator, and the rectifier are frequently in contact with each other due to vibrations generated during actual driving. In particular, the brush holder is a voltage regulator or a rectifier when there is a detachment of the screw that fastens the brush holder due to the vibration. There was a problem such as damaging the peripheral parts such as to not be able to adjust the generated current in a smooth state to affect the stable quality of the generator.

In the present invention in consideration of the above problems, as shown in FIG. 3, the bracket 26 of the slip ring end frame 11 and the brush holder 25 may be fastened to the bottom of the brush holder 25 by a screw 27. When the brush holder 25 is prevented from flowing or rotating to form a flow preventing bar (30).

The flow preventing bar 30 is coupled to the flow preventing groove 31 formed in the slip ring end frame 11 to prevent rotation and flow that may occur when the brush holder 25 is fastened.

The at least two flow preventing bars 30 may be prevented from being formed due to the occurrence of support points, and the plurality of protrusions 32 and 33 are radially formed on the outside of the flow preventing bars 30 to prevent flow. The bar 30 is forcibly coupled to the flow preventing groove 31.

When the brush holder 25 as described above is fastened to the slip ring end frame 11, the flow preventing bar 30 formed on the bottom surface of the brush holder 25 has a flow preventing groove 31 on the slip ring end frame 11. If the fastener is coupled to the screw 27 of the brush holder 25 in a state in which it is forcibly coupled, it is possible to prevent the brush holder 25 from flowing or rotating after the fastening process and the fastening.

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 (3)

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 170 and the brush 26 accommodated in the brush holder 25 fixed to the slip ring end frame 11 on the outer side thereof. An alternator (50) configured to supply power for magnetization of the rotor assembly (19); The flow prevention bar 30 is formed on the bottom of the brush holder 25 to be coupled with the flow preventing groove 31 formed in the slip ring end frame 11 to flow when the brush holder 25 is fastened or after being fastened. Brush holder of the automotive alternator, characterized in that to be prevented. The method of claim 1; Brush holder of the automotive alternator, characterized in that the flow preventing bar 30 is formed two or more. The method of claim 1; Brush holder of the automotive alternator, characterized in that a plurality of projections (32, 33) formed on the outside of the flow preventing bar (30) to be forcibly coupled with the flow preventing groove (31).