KR20010096386A - Connecting structure of brush holder and regulator in alternator for vehicle - Google Patents

Abstract

PURPOSE: A coupling structure is provided to reduce manufacturing cost and improve durability of AC generator by improving coupling structure between terminals of voltage regulator and brush. CONSTITUTION: A brush holder and a voltage regulator are coupled through a frame(6) in an LSD method in that a plurality of brush holder brackets(40) is arranged onto the frame, the voltage regulator is disposed above the holder bracket, and a plurality of bolt holes(44) formed at brackets and the corresponding penetrating holes(50) formed at the voltage regulator are coupled through bolts(7). Alternatively, the brush holder and the voltage regulator are coupled through a frame in an HSD method in that the brush holder bracket is arranged onto the frame, the voltage regulator having a single penetrating hole is mounted onto the bracket, the bolt hole formed at the bracket and the penetrating hole formed at the voltage regulator are coupled through the bolt, and a terminal for electric connection with the voltage regulator is fixed to the bolt hole of the other brush holder bracket.

Description

Connecting structure of brush holder and regulator in alternator for vehicle}

The present invention relates to a fastening structure of a brush holder and a voltage regulator of an automotive alternator, and more particularly, to improving the fastening structure of a voltage regulator and a brush holder to maintain a constant voltage.

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 automotive alternator 1, as illustrated in FIG. 1, a stator assembly 14 including a stator core 12 and a stator coil 13 is press-fitted between the front 10 and the rear housing 11.

Inwardly, a rotor shaft 16 is provided, which is supported by bearings 15 which are pressed into the front and rear housings 10 and 11.

In the middle of the rotor shaft 16, the spool bobbin 19, which is wound around the rotor coil 17 and connected to the rear slip ring 18, is press-fitted,

Outwardly there is provided a rotor assembly 24 having a plurality of rotor poles 20, 21 in the axial direction coupled thereto to receive the spool bobbin 19.

Outside the slip ring 18 of the rotor assembly 24 is fixed a voltage regulator 25 for maintaining the voltage generated from the rotor and stator assembly 14 and a rectifier 26 for converting alternating current into direct current. do.

In the alternator 1 configured as described above, the rotor shaft 16 rotates with the driving force of the engine through the pulley 27 simultaneously with starting the engine.

At the same time, the power of the battery is applied to the rotor coil 17 through the brush 28 connected to the slip ring 18, and magnetic lines are generated in the segments 22 and 23 located outside the rotor coil 17. .

At this time, as the rotor shaft 16 rotates, three-phase alternating current is induced in the stator coil 13 and applied to the diode of the rectifier 26.

The diode, which is applied to three-phase alternating current, is full-wave rectified to charge the full-wave rectified current only when the voltage is higher than the voltage of the battery.

In addition, when the voltage is higher than the prescribed value in the power generation process, the voltage regulator 25 operates to maintain a constant voltage state at all times,

When the engine is stopped, the current flowing back from the battery to the generator is blocked by the diode to prevent the alternator from being damaged or damaged.

An alternator for generating and charging current required in a vehicle by the above series of operations;

Current is applied to the rotor coil 17 through the brush 28 connected to the slip ring 18, the power of the battery,

As a result, magnetic lines of force are generated in the rotor coil 17 and the segments 22 and 23 of the rotating body to generate current through the stator assembly.

As described above, the brush 28 for supplying power to the rotor coil 17 is accommodated in the inside of the brush holder 30 as shown in FIG. 2 and interposed in the alternator 1.

Brush holder 30 for receiving the brush;

As shown in FIG. 2, the main body 33 having a bracket 32 or the like for accommodating a brush in a '♀' shape, and for fixing various terminals 31 and voltage regulators 25 required for application of current, is formed. And a through-hole 34 of a round body accommodating the slip ring 18 and the rotor shaft 16 to the side thereof.

The brush holder 30 configured as described above has a fastening structure as shown in FIGS. 3 a) and b) for fastening the voltage regulator 25 including the brush and various terminals 31 and mounting in the alternator 1.

Among them, a) is an LSD method (Low Side Driver type) in which the voltage regulator 25 is mounted below the bracket 32 of the brush holder 30 among the specifications of the alternator 1.

First, onto the protruding frame 35 formed in the housing of the alternator 1,

The voltage regulator 25 which couples the terminal 31 which is necessary for application of electric current with the brush terminal 36 interposed in the brush holder 30 is enclosed,

Subsequently, the brackets 32 of the brush holder 30 are sequentially mounted to maintain their mutual fixing state using bolts 37.

In addition, when the specification of the alternator changes depending on the vehicle model, the fastening structure of the brush holder 30 and the voltage regulator 25 is as shown in Figure 3b),

The bracket 32 of the brush holder 30 is placed on the frame 35, and then the voltage regulator 25 is sequentially mounted and then held in a fixed state through the bolt 37.

This fastening structure is referred to as a high side driver type (HSD) because the voltage regulator 25 is located above.

As described above, the fastening structure of the brush holder 30 and the voltage regulator 25, which are separated by the LSD or HSD method,

It is caused by the deformation of the shape of the voltage regulator 25 is applied to the alternator due to the specification change of the car, it acted as a cause of excessive expenses due to the frequent design deformation and manufacture according to the specification conversion.

In particular, in the LSD method, the terminal 31 formed on the voltage regulator 25 and the brush terminal 36 are combined and fixed by welding such as soldering.

Excessive stress acts on the welded portion of the terminal due to the clamping force when the bolt 37 for fixing the voltage regulator 25 and the brush holder 30 settled on the frame 35,

When the actual vehicle was applied, it caused a short circuit of the terminal due to vibration and thermal stress, thereby reducing the durability of the alternator.

Accordingly, in the present invention, to solve the various problems described above, a plurality of brackets formed on the brush holder are formed,

The frame of the housing to which it is mounted is also formed to have a plurality of fastening holes to appropriately cope with changes in the specification of the vehicle, and to reduce the design and manufacturing costs and to increase the durability of the alternator.

1 is a cross-sectional view showing a typical automotive alternator,

2 is a plan view and a front view showing a brush holder of an automotive alternator to which the prior art is applied;

Figure 3a) is a cross-sectional view showing a part of the fastening structure of the brush holder and the voltage regulator of the automotive alternator to which the prior art is applied,

b) is a cross-sectional view showing another embodiment of the brush holder and voltage regulator fastening structure to which the prior art is applied;

4 is a plan view and a front view showing a brush holder of an automotive alternator to which the present invention is applied;

5 is a partial cross-sectional view showing a fastening structure of the brush holder and the voltage regulator of the automotive alternator to which the present invention is applied;

6 is a partial cross-sectional view showing another embodiment of the brush holder and voltage regulator fastening structure of the alternator to which the present invention is applied;

Figure 7 is a plan view and a cross-sectional view showing the shape of the frame for fixing the brush holder and the voltage regulator of the alternator to which the present invention is applied.

* Description of the symbols used in the main parts of the drawings *

4; brush holder 5; voltage regulator

6; frame 40; bracket for fixing the voltage regulator

60; flange 62; boss

63; groove 7; fastening bolt

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

Figure 4 is a plan view and a front view showing a brush holder of the automotive alternator to which the present invention is applied, Figure 5 is a fragmentary cross-sectional view showing a fastening structure of the brush holder and the voltage regulator of the automotive alternator to which the present invention is applied, 6 is a fragmentary cross-sectional view showing another embodiment of the fastening structure of the brush holder and the voltage regulator of the alternator to which the present invention is applied, and FIG. 7 is a shape of a frame for fixing the brush holder and voltage regulator of the alternator to which the present invention is applied. It demonstrates together as a top view and sectional drawing which are shown.

Brush holder 4 for an alternator for automobiles of the present invention for achieving the above object, as shown in Figure 4,

A main body 41 in which a plurality of brackets 40 are attached to the outside for accommodating the brush inward with a cube and for mounting the voltage regulator 5;

It is formed as a through-hole 42 of the hollow body for receiving the rotor shaft, including the slip ring through the brush to apply power to the rotor coil.

The plurality of brackets 40 formed outside the main body 41 and interposed between the voltage regulators 5 are formed in a plane and at a bottom thereof in close proximity to each other by mounting a brush terminal 43 required for energization.

The frame 6 on the housing that holds the bracket 40 of the brush holder 4 also has a planar shape as shown in FIG.

The boss 62 forming the fastening hole 61 corresponding to the bracket bolt hole 44 of the brush holder 40 through the flange 60 for fastening with the housing and the brush holder 4 is integrally formed. do.

The frame 6 forms a groove 63 for weight reduction between the fastening holes 61 formed on both sides of the boss 62.

Referring to the operation state of the present invention as described above compared with the problems of the conventional configuration as follows.

The frame 6, the brush holder 4 and the voltage regulator 5 are classified into an LSD method and an HSD method according to a change in automotive specifications.

First, in the case of the LSD method,

As shown in FIG. 6, the plurality of brush holder brackets 40 are placed on the frame 6 fixed to the housing, and the through holes 50 corresponding to the bolt holes 44 of the brush holder brackets 40 are disposed thereon. After the voltage regulator 5 formed)

Through the bolt holes 44 and the through holes 50 on both sides, the frame 6, the brush holder bracket 40, and the voltage regulator 5 are fastened as bolts 7 to maintain a fixed state.

In this case, each terminal 51 of the voltage regulator 5 for energization and application of power is grounded with the brush terminals 43 formed on the flat and bottom surfaces of the brush holder bracket 40 so as to perform a smooth function.

The LSD fastening structure as described above is characterized in that the fastening hole 44 of the brush holder bracket 40 and the through hole 50 of the voltage regulator 5 are formed at the same position.

In addition, if the HSD method,

As shown in FIG. 5, the same brush holder bracket 40 as the above-described LSD method is placed first above the frame 6,

Subsequently, the voltage regulator 5 having one through hole 50 is mounted thereon, and then using the bolt hole 44 of the brush holder bracket 40 and the through hole 50 of the voltage regulator 5. Fixing the frame (6) and a part,

The bolt hole 44 of the remaining brush holder bracket 40 is fastened and fixed to the terminal as a bolt (7) to be able to perform a function by energizing the voltage regulator (5).

Of course, even in the HSD method, the terminal 51 of the voltage regulator 5 is grounded with the brush terminals 43 formed on the flat and bottom surfaces of the brush holder bracket 40 so that a smooth function can be performed.

As described above, the fastening structure of the brush holder 4 and the voltage regulator 5 to which the present invention is applied does not require a separate brush holder 4 in spite of the shape change of the voltage regulator 5 according to the change of the vehicle specification. ,

This means that as one brush holder 4, both the LSD method and the HSD method are possible according to the specification of the voltage regulator 5.

It is possible to perform the role as a single brush holder 4 even in the specification changes of the voltage regulator 5 as described above,

The conventional brush holder can prevent the economic loss due to the design change and manufacture for changing the shape of the brush holder bracket at the same time as the specification of the voltage regulator,

In addition, there is an advantage that can solve the problems such as short circuit caused by the fixing by soldering between the terminal of the voltage regulator and the brush holder used in the conventional LSD method.

The fastening structure of the brush holder and the voltage regulator of the alternator for automobiles of the present invention as described above can cope with the change in the specifications of the vehicle, as well as the cost reduction due to the design modification and production,

By improving the fastening structure between the voltage regulator terminal and the brush terminal, it is a useful invention that can increase the durability of the alternator and improve the output of the automobile.

Claims (2)

A fastening structure of a brush holder and a voltage regulator of an automotive alternator; The brush holder (4); The main body 41 which integrally formed the bracket 40 for fixing the plural-type voltage regulator 5 which was attached by attaching the brush terminal 43 which is required for electricity supply to the plane and the bottom of a bolt hole as a hexahedron, It is formed by the through-hole 42 of the hollow body for receiving the rotor shaft, including the slip ring, A flange 60 for fastening with the housing, the planar shape of which forms a rough peanut shell; Fastening of the brush holder and the voltage regulator of the automotive alternator, characterized in that the fastening via the frame consisting of a plurality of fastening holes 61 and the boss (62) formed with grooves (63) in the upper direction. rescue. The method of claim 1; The fastening structure of the brush holder 4 and the voltage regulator 5 through the frame 6 is; A plurality of brush holder brackets 40 are placed on the frame 6, Subsequently, after the voltage regulator 5 is interposed therebetween, the LSD method of fastening the plurality of bolt holes 44 and the same plurality of through holes 50 as the bolts 7, Place the brush holder bracket 40 above the frame 6, Subsequently, the voltage regulator 5 having one through hole 50 is mounted thereon, and the bolt hole 44 on one side and the through hole 50 of the voltage regulator 5 are wired as bolts 7. Prepend, Brush holder of the alternator for automobiles, which is fastened to the bolt hole 44 of the other brush holder bracket 40 by an HSD method of fastening and fixing a terminal to perform a function by energizing the voltage regulator 5. And fastening structure of the voltage regulator.