KR0154273B1 - Car motors ac generator - Google Patents

Abstract

The present invention relates to an automotive alternator, the object of which is to improve the sleeve to facilitate the connection of the slip ring terminal and the field coil lead-up. The automotive alternator according to the present invention is connected to one end of the rotary shaft 1 and coupled to the sleeve 40 to which the field coil lead wire 3a and the slip ring terminal 9a are connected. The grooves 42 and 42a were formed. Therefore, the connection between the field coil lead wire 3a and the slip ring terminal 9a is facilitated through the connection terminals 41 and 41a, and the solder filler does not flow down during the connection process and is fixed to the rotating shaft 1. The phenomenon does not occur.

Description

Automotive Alternator

FIG. 1 is a front sectional view showing the configuration of a typical end cover type automotive alternator.

2 shows a sleeve installed at an end of a rotating shaft of a vehicle alternator, (a) is a front view of a conventional sleeve, and (b) is a sectional view taken along the line A-A of (a).

3 shows a sleeve installed at an end of a rotating shaft of a vehicular alternator according to the present invention, (a) is a front view of the sleeve according to the present invention, and (b) is a sectional view taken along the line B-B of (a).

Figure 4 is an enlarged cross-sectional view showing the connection state of the slip ring terminal and the field coil lead wire through the sleeve according to the present invention.

* Explanation of symbols for main parts of the drawings

1: axis of rotation 2: rotor

3: field coil 3a: field coil

9: Slip Ring 9a: Slip Ring Terminal

40: sleeve 41,41a: connection terminal

42,43a: Guide groove 43,43a: protrusion

The present invention relates to a vehicle alternator, and more particularly, to a sleeve structure of a vehicle alternator so that the slip ring terminal for supplying current to the field coil and the field coil lead-in can be easily coupled to the sleeve.

In general, the vehicle alternator rotates by the power of the engine and induces the transfer, and various types are proposed and used. Among them, there are a representative of the rear bracket type and the Ant cover type alternator. In the rear bracket type alternator, the rear bearing supporting the rotating shaft is installed at the end of the rotating shaft. Therefore, in order to repair the electrical parts of the generator, the rear bracket must be disassembled after the whole generator is removed from the vehicle body. The end cover type alternator is a structure in which electrical parts of the generator are installed on the outside of the rear bracket to compensate for this defect, and the end cover is enclosed. FIG. 1 is a front sectional view showing the internal structure of the general end cover type alternator. to be.

As shown therein, the alternator for a vehicle is composed of a pair of polcoa inside a pair of front and rear brackets 20 and 20a having an inlet and an exhaust port configured to form an exterior body and intake and exhaust air, as shown in FIG. 2), the rotary shaft 1 is axially pushed into the rotor 2 and a bearing 12 for rotatably supporting it is included. In addition, the inner and outer sides of the front and rear brackets 20 and 20a are fixed with a stator 4 having the coil 5 wound thereon, and the voltage adjusting device 7 and the upper and lower sides of the rear bracket 20a, respectively. The brush holder 8 and the rectifier 6 in which the brush 8a is built are comprised, These are enclosed by the separate end cover 11. A rear end of the rotating shaft 1 is provided with a slip ring 9 and a sleeve 30 for supplying current to the field coil 3 wound on the rotor 2. Reference numeral 3a denotes a field coil lead wire drawn out from the field coil 3, and 9a denotes a slip ring terminal 9a provided on the outer circumferential surface of the end of the rotation shaft 1.

A pulley 50 is coupled to the front end of the rotation 1 protruding to the outside of the front bracket 20, which is connected to the engine of the vehicle (not shown) through a belt (not shown).

In the general automotive alternator configured as described above, when the poly 50 rotates when the engine (not shown) is driven, the rotating shaft 1 and the rotor 2 which are integrally coupled thereto rotate. Therefore, as the rotor 2 in which the field current is formed rotates at high speed inside the front and rear brackets 20 and 20a, an output current is generated, and the output current is a voltage regulator 7 for regulating the voltage with the rectifier 6. Are supplied to each part of the vehicle.

Among the components of the alternator which perform this function, the conventional sleeve 30 has a shaft through-hole 32 through which a rotating shaft 1 (see Fig. 1) penetrates over a central portion, as shown in FIGS. 2A and 2B. ) Is formed in the terminal hole 31 at the upper and lower ends, respectively. Therefore, the front end of the slip ring terminal 9a is installed to protrude upward through the terminal hole 31 after passing through the shaft through hole 32, and the field coil lead line 3a at the end of the protruding slip ring terminal 9a. ) And connected via soldering means. That is, the operator soldered the ends of the slip ring terminal 9a and the field coil lead-out line 3a exposed to the upper side of the sleeve 30 through the gap between the sleeve 30 and the bearing 12 (see FIG. 1).

However, if the operator does not need considerable attention in the process of soldering the slip ring terminal 9a and the field coil lead-out line 3a protruding to the outside through the terminal hole 31, the leaded inserts may be separated from the bearing 12. The short circuit phenomenon occurs in the rotor 2 by flowing into the space between the sleeves 30. In addition, there is a problem that the lead filler flowed down is fixed to the rotating shaft (1).

The present invention is to solve this problem, an object of the present invention is to be fitted to one end of the rotary shaft coupled to form a connecting terminal and a guide groove in the sleeve that is connected to the field coil lead wire and the slip ring terminal, through the connecting terminal The present invention provides an alternator for a vehicle that facilitates connection between a field coil lead wire and a slip ring terminal. The present invention for achieving this object, the front bracket and the rear bracket forming the appearance, the stator is fixed to the inner circumference of the front, rear brackets, axially installed in the center of the stator, the rotor coil wound around, Rotating shaft that is axially pressed into the center of the electron and rotated integrally, bearings rotatably supporting the end of the rotating shaft exposed to the outside through the rear bracket, slip rings and slips provided on the outer circumferential surface of the rotating shaft exposed to the outside of the rear bracket Ring terminal, brush holder with built-in brush so that the tip part is electrically connected by friction with slip ring, end cover which is coupled to rear bracket to enclose brush holder, is fitted to the end of rotating shaft between bearing and rotor, The vehicle alternator has a sleeve for guiding the connection of the field coil lead wires drawn from the field coils. On the outer circumferential portion of the sleeve, a pair of connecting terminals protrude so as to facilitate connection between the end of the slip ring terminal and the field coil lead-out through soldering means, and a concave recess that guides the slip ring terminal to be connected to the connecting terminal. Characterized in that the guide groove is provided.

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

(A) and (b) of FIG. 3 are front and side cross-sectional views showing only a sleeve according to the present invention, and FIG. 4 is a cross-sectional view of a main part of an automotive alternator showing a rotating shaft end structure in which a sleeve according to the present invention is coupled. (The automotive alternator according to the present invention is the same as the conventional component except for the structure of the sleeve to which the slip ring terminal and the field coil lead wire are connected. Therefore, the same component will be described with reference to FIG. In the end cover type vehicle alternator, the stator (4) and the rotor (2) are surrounded by the front bracket (20) and the rear bracket (20a), and electrical functional parts are installed on the outer side of the rear bracket (20a). It is protected by the end cover 11.

The stator 4 wound around the coil 5 is installed firmly on the inner surfaces of the front bracket 20 and the rear bracket 20a forming the outer body, and a pair of polcoa and field coils interacting with the inner space thereof. The rotor 2 to which (3) was wound is provided. The rotating shaft 1 is press-fitted in the center of the rotor 2 in the axial direction, and both ends of the rotating shaft 1 are exposed to the outside through the center of the front bracket 20 and the rear bracket 20a. The bearing 12 is installed on the center of the front bracket 20 and the rear bracket 20a to support the rotation of the rotation shaft 1, and the engine of the vehicle is located at the tip of the rotation shaft 1 exposed to the outside of the front bracket 20. And a pulley 50 is provided which is connected by using a belt.

On the outside of the rear bracket 20a, a rectifier 6 for converting alternating current, which is an electrical functional part of the generator, into a direct current, a voltage regulator 7 for controlling the field current flowing through the field coil 3, and an output voltage of the generator, a brush ( A brush holder 8 having a built-in 8a) is provided, and the end cover 11 is coupled to surround them.

The front end of the brush 8a is always provided to be connected to the rear end of the rotation shaft 1, and for this purpose, a slip ring 9 is provided on the outer peripheral surface of the rear end of the rotation shaft 1. The slip ring 9 is in contact with the field coil lead-out line 3a drawn out from the field coil 3 through the slip ring terminal 9a to supply current to the field coil 3, the structure of which is as follows.

First, the sleeve 40 is fitted and coupled to the rear end of the rotation shaft 1 between the bearing 12 and the rotor 2. As shown in FIG. 3, the sleeve 40, which is a characteristic component of the present invention, is provided with connecting terminals 41 and 41a facing the upper and lower sides of the outer periphery of the body, respectively. An end portion of the slip ring terminal 9a and the field coil lead-out line 3a connected to each other are connected via soldering means.

In addition, a pair of guide grooves 42 and 42a are concavely recessed to face the upper and lower sides of the sleeve 40 so as to be connected to the connection terminals 41 and 41a. The guide grooves 42 and 42a are for preventing the slip ring terminal 9a from being inserted out of the sleeve 40 body. The guide grooves 42 and 42a alternately protrude from the inner surface of the guide grooves 42 and 42a. Is provided to protrude so that the slip ring terminal 9a is firmly maintained.

Next, the process of connecting the field coil 3 and the slip ring terminal 9a through the sleeve 40 having such a structure will be described in detail.

First, the sleeve 40 is press-fitted to the rear end of the rotating shaft 1, and the slip type 9 is installed at the rear end of the rotating shaft 1 protruding to the outside of the rear bracket 20a (see FIG. 1). Then, the slip ring terminal 9a of the predetermined length drawn out from the slip ring 9 is inserted into the guide grooves 42 and 42a formed above and below the sleeve 40, respectively. At this time, the projections 43 and 43a are alternately protruded from the guide grooves 42 and 42a so that the slip ring terminal 9a is clamped and cannot be released without applying an artificial force. Subsequently, the end of the slip ring terminal 9a inserted into the guide grooves 42 and 42a is inserted into the connecting terminals 41 and 41a, and the field coil lead-out line 3a drawn out from the field coil 3 is also inserted. When wound several times on the connecting terminals 41 and 41a and fixed by soldering means, as shown in FIG. 4, the slip ring terminal 9a and the field coil lead wire 3a are electrically connected. Therefore, the slip ring terminal 9a and the field coil lead-out line 3a are easily connected and fixed through the connecting terminals 41 and 41a, and the leaded filler material does not flow down.

As described in detail above, the vehicle alternator according to the present invention is coupled to one end of the rotary shaft and constituted a connecting terminal and a guide groove in a sleeve to which the field coil lead wire and the slip ring terminal are connected. Therefore, the connection between the field coil lead wire and the slip ring terminal is facilitated through the connecting terminal, and the solder filler does not flow down during the connection process, so that the phenomenon of fixing to the rotating shaft does not occur.

Claims (1)

The front bracket 20 and the rear bracket 20a forming the exterior, the stator 4 is fixed to the inner circumference of the front and rear brackets (20, 20a), are installed axially in the center of the stator (4) The coil (3) is wound around the rotor (2), the rotating shaft (1) is pressed in the axial direction in the center of the rotor (2) integrally rotated through the rear bracket (20a) exposed to the outside A bearing 12 rotatably supporting the end of the rotating shaft 1, a slip ring 9 and a slip ring terminal 9a provided on an outer circumferential surface of the end of the rotating shaft 1 exposed to the outside of the rear bracket 20a, A brush holder 8 having a built-in brush 8a so that the front end portion is electrically connected to the slip ring 9 by friction, and an end cover 11 coupled to the rear bracket 20a to surround the brush holder 8. ), The slip ring terminal (9a) is coupled to the end of the rotating shaft (1) between the bearing 12 and the rotor (2) And a sleeve (40) for guiding connection of the field coil lead-out line (3a) drawn out from the field coil (3), the outer periphery of the sleeve (40) of the slip ring terminal (9a) A pair of connecting terminals 41 and 41a protrude so that an end portion and the field coil leader line 3 are easily connected through soldering means, and the slip ring terminal 9a is connected to the connecting terminals 41 and 41a. And a concavely recessed guide groove (42, 42a) for guiding to be connected to the vehicle.