CN100342623C

CN100342623C - Rectifying device of vehicle AC generator

Info

Publication number: CN100342623C
Application number: CNB031585833A
Authority: CN
Inventors: 黄三東; 朴顺植
Original assignee: Valeo Mando Electrical Systems Korea Ltd
Current assignee: Valeo Mando Electrical Systems Korea Ltd
Priority date: 2003-09-19
Filing date: 2003-09-19
Publication date: 2007-10-10
Anticipated expiration: 2023-09-19
Also published as: CN1599206A

Abstract

The present invention relates to a rectifier of a vehicle AC generator, which has the purposes that on one hand, diodes are stellatedly arranged at equal intervals relatively to the rotating center of a cooling fan to maximize the cooling effect; on the other hand, subsidiary diodes are arranged to be exposed out of a terminal disc so as to also raise cooling efficiency on the subsidiary diodes. The rectifier (60) is composed of the terminal disc (61), radiation fins (64) fixed on one side of the terminal disc (61), a plurality of diodes (62) positioned between the radiation fins, and the subsidiary diodes arranged across the width direction of the terminal disc (61), wherein the terminals (62a) of the diodes (62) are projected out of the terminal holes (61a) of the terminal disc (61); the diodes (62) are arranged at positions with equal radius away from the rotating center of the cooling fan (43) of a rotor device (40).

Description

The rectifying device of motorcar alternator

Technical field

The present invention relates to the rectifying device of motorcar alternator, in more detail, the rectification that improves rectifying device is with the position of diode and be used to be provided with the structure of the terminal board of these diodes, so that the raising rectification function is as its feature.

Background technology

Usually, motorcar alternator as shown in Figure 1, be fixed in by belt pulley 11 under the state of its end the central authorities of front rack 20 and tail-bracket 30 by the rotating shaft 10 of separately bearing 21 supportings, be loaded on described rotating shaft stage casing and comprise field core 41 and the rotor arrangement 40, stator 50, the rectifying device 60 of being located at described tail-bracket 30 inboards, voltage adjuster 70 and the brush supportive device 80 that is fixed under the state between described front rack 20 and the tail-bracket 30 around the described rotor arrangement of the coil 42 that is wound of portion are formed within it.

This existing rectifying device 60 as shown in Figure 2, by terminal board 61, be fixed in the fin 64 of the one side of described terminal board 61, between the described fin and its portion of terminal 62a protrudes in a plurality of diodes 62 of terminal hole 61a of described terminal board 61 and the subsidy diode 63 that is disposed between described fin 64 and the terminal board 61 is formed.

There are the following problems for this existing rectifying device 60.

The 1st, as shown in Figure 2, diode 62 is arranged with straight line, the even cooling effect that the air stream that therefore can not get the cooling fan 43 by rotor arrangement 40 provides causes.

Promptly, forcing the rotating shaft 10 of relative its cooling fan 43 of air flow amount of handover to be radiation ground by cooling fan 43 evenly distributes, good more the closer to the middle body cooling effect, but when in the past diode being arranged in a line, will descend from the refrigerating function of middle body diode at a distance.

The 2nd, use subsidy diode 63 for rectification function, and usually these subsidy diodes 63 are disposed between fin 64 and the terminal board 61, therefore its refrigerating function is descended significantly.

Promptly, main diode 62 plays the effect that the three-phase alternating current from stator is transformed into direct current, and subsidy diode 63 plays spontaneous electrical function from exciting current to field supply that supply with, make it bury structure between fin 64 and terminal board 61 but their assembly structure becomes, so its cooling performance is bad.

The 3rd, must weld after making the portion of terminal 62a of these diodes 62 pass terminal board 61 terminal hole 61a, but therefore the equal diameters of the beginning of relative terminal board 61 thickness of described terminal hole 61a part and latter end makes its installation become difficult.

More specifically, the portion of terminal 62a of diode 62 is pierced into be connected with the coil of stator 50 behind the terminal hole 61a of terminal board 61 and weld, but if terminal hole 61a is big, worry that then scolder is wandering, therefore make it as much as possible little, so same up and down under the state that terminal hole 61a is little because of its aperture, therefore make the assembling of its portion of terminal 62a become difficult.

In addition, do not make the wandering parts of unnecessary scolder when not only not welding, do not guide the parts of stator coil yet.

Summary of the invention

The present invention makes in view of above-mentioned existing issue, its main purpose is: arrange and make the cooling effect maximization thereby the pivot of the relative cooling fan of diode location is radiation ground equidistance, on the other hand, thus the subsidy diode location is arranged in the top cooling effectiveness that also can improve that is exposed to terminal board to the subsidy diode.

Also by improving the terminal hole of terminal board, make the portion of terminal that helps being inserted in and assembling diode, and scolder wandering can prevent to weld the time, make its function again with guiding stator coil, so that the damage of prevention diode, and can reduce the assembling operation.

For achieving the above object, a kind of rectifying device of motorcar alternator, this alternating current generator be fixed in by belt pulley under the state of its end in the middle of front rack and the tail-bracket by the rotating shaft of separately bearing supporting, be contained in described rotating shaft stage casing and comprise field core and be wound in the rotor arrangement of its inner coil, stator, the rectifying device that is located at described tail-bracket inboard, voltage regulator and the brush bracing or strutting arrangement that is fixed under the state between described front rack and the tail-bracket around the described rotor arrangement formed, it is characterized by:

Described rectifying device by terminal board, be fixed in the fin of the one side of described terminal board, between described fin and its portion of terminal protrude in described terminal board terminal hole a plurality of diodes and cross the cross direction of described terminal board and the subsidy diode that is provided with is formed

The pivot that described a plurality of diodes are arranged in the cooling fan that described rotor arrangement possessed relatively has on the position of identical radius distance.

Description of drawings

Fig. 1 is the structure chart of automobile with alternator;

Fig. 2 is existing rectifying device structure chart;

Fig. 3 is the fragmentary cross-sectional view of existing terminal board;

Fig. 4 is the alternating current generator end view of the embodiment of the invention;

Fig. 5 is a rectifying device structure chart of the present invention;

Fig. 6 is a terminal board fragmentary cross-sectional view of the present invention.

Embodiment

Describe the present invention with reference to the accompanying drawings in detail.

Fig. 4 is the structural map of rectifying device of the present invention for the end view of the alternating current generator of the expression embodiment of the invention, Fig. 5.

At first, the alternating current generator that uses rectifying device 60 of the present invention is also with shown in Figure 1 the same, be fixed in by belt pulley 11 under the state of its end in the central authorities of front rack 20 and tail-bracket 30 by the rotating shaft 10 of separately bearing 21 supportings, be loaded on described rotating shaft stage casing and comprise field core 41 and the rotor arrangement 40 of the coil 42 that is wound of portion within it, the state that is fixed between described front rack 20 and the tail-bracket 30 is formed around described rotor arrangement stator 50 on every side down, and in described tail-bracket 30 inboards rectifying device 60 of the present invention is set, voltage regulator 70 and brush bracing or strutting arrangement 80.

At this moment, described in the present invention rectifying device 60 by terminal board 61, be fixed in the fin 64 of described terminal board 61 one sides, between described fin in its portion of terminal 62a protrude in described terminal board 61 terminal hole 61a a plurality of diodes 62 and cross the Width of described terminal board 61 and the subsidy diode 63 that is provided with is formed, but make main diode 62 and subsidize the arrangement of diode 63 and the structure of terminal board 61 with existing different.

That is, as shown in Figure 4, the pivot (not shown) that main diode 62 is arranged in the cooling fan 43 that described relatively rotor arrangement 40 had has similar radius and makes it curved.

The result of such arrangement, the cooling effect that the air stream that the cooling fan 43 of rotor arrangement 40 provides makes each diode 62 obtain equating.

As shown in Figure 4, all be in approximate radius distance, the position of terminal hole 61a is formed at approximate radius distance place in order to make subsidy diode 63 of the present invention.

For the assembling that makes the 62a of diode terminal portion is easy, when forming a plurality of terminal hole 61a, thereby make the little formation of the radius taper section 61b of big, the opposite side of a side radius in this hole.The portion of terminal 62a of diode 62 is inserted to narrow cross-wise direction from the wide section of taper section 61b, insert easily and can reduce assembling work operation and time so can make.

Uper side surface at described terminal hole 61a forms scrobicula slot part 61c around terminal hole again.This concave part 61c is when described stator coil 51 with protrude in portion of terminal 62a above the described terminal hole 61a when being welded to connect, and also can not scatter and stops in described groove 61c even excess solder occurs.

This structure is seen more in detail from Fig. 6.

As Fig. 5,,, form the guide portion 61d that is directed not moving about with beeline for stator coil 51 is connected to the portion of terminal 62a that is exposed to terminal hole 61a in a side of described terminal board 61.

Certainly, guide portion 61d is formed at and thinks about stator coil 51 and be advisable on the appropriate location behind the wiring condition states that pass through.

Form the guiding ladder 61e that protrudes to the surface that contacts with stator coil on the terminal part of described terminal board 61 upwards holds up the end of stator coil always.

Described stator coil is terminal upwards to be held up such guiding ladder 61e because of making, and the scolder that is glued can not turned fin 64 and mobile to the direction of terminal board 61, so can prevent the short circuit of fin 64 1 sides.

As shown in Figure 4, be connected with exposed state on the terminal board 61 of subsidy diode 63 on be connected in fin 64.Subsidy diode 63 with this connection is compared with the structure that is located between fin and the terminal board, and is better by the cooling effect that air flows obtains.

Aforesaid the present invention, each positional alignment of a plurality of diodes is radial and has identical or akin distance at relative cooling fan pivot, thereby the advantage of the cooling effect maximization of the moving air by fin is arranged.

Position because of the subsidy diode is not exposed on the terminal board between terminal board and fin yet again, can make the cooling effect maximization of moving air yet.

Moreover, because the terminal hole of terminal board forms taper section, have diode and insert the shortening assembly process bring easily and the advantage of time, again because of be formed with the scrobicula slot part at terminal hole, unnecessary scolder can not scatter and disqualification rate is significantly reduced, and guides portion into owing to form, and can fetter stator coil can't move about with beeline, by guiding ladder unnecessary melting solder can be directed to terminal surfaces one side, can prevent short circuit.

Claims

1. the rectifying device of a motorcar alternator, this alternating current generator comprises that belt pulley (11) is fixed in the rotating shaft (10) that quilt bearing (21) separately supports in the middle of front rack (20) and tail-bracket (30) under the state of its end, be contained in described rotating shaft stage casing and comprise field core (41) and be wound in the rotor arrangement (40) of its inner coil (42), the state that is fixed between described front rack (20) and the tail-bracket (30) centers on described rotor arrangement stator (50) on every side down, and be located at the inboard rectifying device (60) of described tail-bracket (30), it is characterized by:

Described rectifying device (60) by terminal board (61), be fixed in the fin (64) of the one side of described terminal board (61), between described fin and its portion of terminal (62a) protrude in described terminal board (61) terminal hole (61a) a plurality of diodes (62) and cross the cross direction of described terminal board (61) and the subsidy diode (63) that is provided with is formed

The pivot that described a plurality of diodes (62) is arranged in the cooling fan (43) that described relatively rotor arrangement (40) possessed has on the position of identical radius distance.

2. according to the rectifying device of the described motorcar alternator of claim 1, it is characterized by: described terminal board (61) forms a plurality of terminal holes (61a) for the portion of terminal (62a) of assembling diode, and the pivot that this terminal hole (61a) is arranged in the cooling fan (43) that relative rotor arrangement (40) possessed is had on the position of equal radii distance.

3. according to the rectifying device of the described motorcar alternator of claim 1, it is characterized by:

Make a plurality of described terminal boards (61) terminal hole (61a) thus the little formation of the radius taper section (61b) of big, the opposite side of the radius of a side.

4. according to the rectifying device of the described motorcar alternator of claim 1, it is characterized by:

The terminal hole (61a) of described terminal board (61) is the wandering groove (61c) of scolder when being formed for preventing to weld around its surface.

5. according to the rectifying device of the described motorcar alternator of claim 1, it is characterized by:

Described terminal board (61) makes the opposite side of the terminal of described stator coil at fin at its terminal guiding ladder (61e) that protrudes to the surface that contacts with stator coil that forms.

6. according to the rectifying device of the described motorcar alternator of claim 1, it is characterized by:

Described subsidy diode (63) assembles with the state on the surface that is exposed to the terminal board (61) on the fin (64).