JP2003189535A - Dynamo-electric machine for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dynamo-electric machine for a vehicle which can prevent the breakage of a protective cap for preventing an in/out terminal and also can relax the labor of connection work and shorten the time. <P>SOLUTION: An AC generator for a vehicle is quipped with an output terminal 54 which outputs generated power, a bushing 9 which insulates and protects the periphery of the output terminal 54, and a protective cap 10 which covers the output terminal 54 exposed from the bushing 9. The protective cap 10 is united with the busing 9, in condition that a cable 70 for wiring is not connected, and has a lid 10a which is opened and closed at connection of the cable 70 for wiring to the output terminal 54. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary electric machine for a vehicle mounted on a passenger car, a truck or the like.

[0002]

2. Description of the Related Art Conventionally, a vehicular AC generator is provided with a bushing which is a resin insulating member for protecting the periphery of an output terminal. The output wiring wire is attached to the vehicle alternator by sandwiching the terminal attached to the end of the wiring wire with the nut that fastens and fixes this bushing and another nut that is attached to the outside. .

By the way, depending on the mounting position of the vehicle alternator, rain water, washing water, etc. may infiltrate in the vicinity of the output terminal and dust may easily collect. A protective cap may be used to protect the connection part of the terminal. For example, Japanese Unexamined Patent Publication No. 7-111755 discloses a rubber cap which is preliminarily attached to an electric wire for wiring and has a shape to cover an output terminal together with its pedestal during wiring.

FIG. 5 is a diagram showing the structure near the conventional terminal disclosed in the above-mentioned publication. Further, FIGS. 6 and 7 are views showing an outline of a procedure for attaching the terminal shown in FIG. 5 to the output terminal of the vehicle alternator. The conventional terminal 200 shown in FIG. 5 is covered with a rubber cap 204 attached to the tip of the wiring 202.
When this terminal 200 is attached to the output terminal 210 of the vehicle alternator as shown in FIG. 7, it is necessary to temporarily deform the rubber cap 204 largely to expose the terminal 200 as shown in FIG.

[0005]

By the way, the above-mentioned conventional terminal 200 has a rubber cap 20 as a whole.
4 is covered with the rubber cap 20 when connecting the terminal 200 to the output terminal of the vehicle alternator.
Since it is necessary to largely deform 4, the rubber cap 204 has a problem that damage such as cracks occurs if it is forcibly deformed. Further, when the deformed rubber cap 204 is restored to its original shape after the connection of the terminal 200 is completed, the terminal cap of the terminal 20 is surely secured by the rubber cap 204.
Since it is necessary to perform this work while confirming that 4 is covered, there is a problem in that this work takes a lot of time and labor.

Further, when the vehicle alternator is manufactured and then carried into a vehicle manufacturer or the like, foreign matter hits the output terminal of the vehicle alternator and the output terminal is deformed to fix the terminal 200. Although it may be possible that the nut cannot be tightened, the conventional rubber cap 204 is attached to the wiring 202 so as to cover the terminal 200. Therefore, such a problem can be avoided. There wasn't.

The present invention has been made in view of the above circumstances, and an object thereof is to prevent damage to a protective cap for protecting input / output terminals, and to reduce labor and time required for wiring work. Another object of the present invention is to provide a rotary electric machine for a vehicle capable of performing the above. Another object of the present invention is to provide a vehicular rotary electric machine that can prevent damage to the input / output terminals during loading and the like.

[0008]

In order to solve the above-mentioned problems, a vehicle rotary electric machine according to the present invention comprises an input / output terminal for inputting / outputting electric power, and a protection member for insulating and protecting the periphery of the input / output terminal. , A protective cap that covers the input / output terminal exposed from the protective member, and the protective cap is integrated with the protective member in the state where the wiring electric wire is not connected, and the wiring electric wire is connected to the input / output terminal. It has a lid that is opened and closed at the time. Since the protection cap integrated with the protection member is used, it is possible to protect the input / output terminal of the vehicle rotary electric machine and prevent damage to the input / output terminal during transportation or the like. Also, since the wiring wire can be connected simply by opening and closing the lid formed on the protective cap, the protective cap does not have to be largely deformed, and damage to the protective cap can be prevented, and the wiring work is troublesome. It can be reduced and the time can be shortened.

Further, it is preferable that the above-mentioned protective cap is provided integrally with the protective member and has a locking portion for fixing the lid portion in a state where the lid portion is closed. By integrally forming the protective cap and the protective member, the number of parts can be reduced. Further, by providing the locking portion, it is possible to maintain the closed state of the lid portion.

Further, it is desirable that the above-mentioned protective cap is provided with a locking portion which is integrated with the protective member when assembled and which fixes the lid portion with the lid portion closed. In addition to the case where the protection cap is formed integrally with the protection member, it may be prepared as a separate component and integrated at the time of assembling. Even in this case, similar protection such as damage to the input / output terminals is prevented. The effect can be obtained. Further, by providing the lid portion with the locking portion, it is possible to maintain the closed state of the lid portion.

Further, it is desirable that the above-mentioned engaging portion is an uneven portion or a fitting portion formed on the lid portion and the abutting portion that abuts when the lid portion is closed. With such a structure of the locking portion, the locked state can be reliably maintained.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION A vehicle alternator according to an embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a cross-sectional view showing an overall configuration of a vehicle AC generator according to an embodiment. The vehicle alternator 1 shown in FIG. 1 is configured to include a stator 2, a rotor 3, a brush device 4, a rectifying device 5, a frame 6, a rear cover 7, a pulley 8 and the like.

The stator 2 is provided with a stator core 21 and a three-phase stator winding 23 wound around a plurality of slots formed in the stator core 21 at predetermined intervals.
The rotor 3 has a structure in which a field winding 31 formed by winding an insulated copper wire in a cylindrical shape and concentrically is sandwiched from both sides through a rotating shaft 33 by a pole core 32 having six claw portions. have. An axial cooling fan 34 is attached to the end surface of the pole core 32 on the front side by welding or the like in order to discharge the cooling air sucked from the front side in the axial direction and the radial direction.
Similarly, a centrifugal cooling fan 35 is attached to the end surface of the pole core 32 on the rear side by welding or the like in order to discharge the cooling air sucked from the rear side in the radial direction.

The brush device 4 includes a rectifying device 5 and a rotor 3.
For supplying an exciting current to the field winding of
Slip ring 3 formed on rotating shaft 33 of rotor 3
It has brushes 41 and 42 which press against 6 and 37, respectively. The rectifier 5 is for rectifying a three-phase AC voltage, which is an output voltage of the three-phase stator winding 23, to obtain a DC output power, and a terminal block 51 including a wiring electrode therein,
A positive-side heat sink 52 and a negative-side heat sink 53 to which three rectifying elements are attached, respectively, and a positive-side heat sink 5
2 and an output terminal 54 that is used for extracting output power to the outside. Heat sink 52, 5
Three-phase full-wave rectification is performed by a total of six rectifying elements attached to the three. Further, a bushing 9 as a protective member is provided around the output terminal for the purpose of insulation protection. A protective cap 10 is attached to the bushing 9 so as to cover the output terminal 54. Details of the bushing 9 and the protective cap 10 will be described later.

The frame 6 accommodates the stator 2 and the rotor 3, the rotor 3 is supported in a rotatable state around the rotation shaft 33, and the outer peripheral side of the pole core 32 of the rotor 3 is accommodated. The stator 2 arranged at a predetermined gap is fixed. The frame 6 is provided with a cooling air discharge window 61 at a portion facing the stator winding projecting from the axial end surface of the stator core 21, and a cooling air suction window 62 at the axial end surface. .

The rear cover 7 is a brush device 4, a rectifying device 5 and an I device mounted on the outside of the frame 6 on the rear side.
It covers the entire C regulator 12 and protects them. In the vehicular AC generator 1 having the above-described structure, the rotor 3 rotates in the predetermined direction when the rotational force from the engine (not shown) is transmitted to the pulley 8 via the belt or the like. By applying an exciting voltage from the outside to the field winding 31 of the rotor 3 in this state, each claw portion of the pole core 32 is excited and a three-phase AC voltage can be generated in the stator winding 23. , Output terminal 5 of rectifier 5
DC output power is taken out from 4.

Next, the bushing 9 and the protective cap 1
Details of the shape of 0 and the mounting structure will be described.
FIG. 2 is a sectional view showing the structures of the bushing 9 and the protective cap 10. The bushing 9 is made of an insulating resin material and electrically insulates the output terminal 54 of the vehicular AC generator 1 from the frame 6. The protection cap 10 is formed integrally with the bushing 9, and the terminal 72 attached to the wiring wire 70 is connected to the output terminal 5.
4 has a shape that covers the tightened portions of the output terminal 54 and the terminal 72 when the nut 4 is tightened and fixed using the nut 55.

This protective cap 10 is provided with a wiring electric wire 70.
It has a lid portion 10a which is opened and closed when the wiring is connected to the output terminal 54. The lid portion 10a is opened when the work of tightening and fixing the terminal 72 to the output terminal 54 is performed, and is closed after the work is completed. Further, when the manufactured vehicle alternator 1 is carried into a vehicle maker or the like, the lid portion 10a of the protection cap 10 is maintained in the closed state.

Further, the protective cap 10 has a locking portion 10b for fixing the lid 10a so that the lid 10a is not opened when the lid 10a is closed. The locking portion 10b is the lid 1
0a and the convex portion 10c formed near the tip of the convex portion 1a.
It is constituted by a recess 10d formed at a predetermined position of the protection cap 10 corresponding to 0c. When the lid portion 10a is closed, the convex portion 10c is locked in the concave portion 10d, so that the lid portion 10a is not easily opened due to vibration or impact.

As described above, in the vehicle AC generator 1 of this embodiment, the protective cap 1 integrated with the bushing 9 is provided.
Since 0 is used, the output terminal 5 of the vehicle alternator 1
4 can be protected, and the output terminal 54 can be prevented from being damaged during transportation. Further, since the wiring electric wire 70 can be connected only by opening and closing the lid portion 10a formed on the protective cap 10, it is not necessary to greatly deform the protective cap 10 and the protective cap 1
It is possible to prevent breakage of 0, reduce the time and effort required for the wiring work.

Further, by integrally forming the protective cap 10 and the bushing 9, the number of parts can be reduced. Further, with the lid 10a closed, the lid 10a
Since the locking portion 10b for fixing the
It is possible to maintain the closed state. In particular, by forming the locking portion 10b by the concave portion 10c formed on the lid portion 10a and the corresponding convex portion 10d, the locked state can be reliably maintained.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the gist of the present invention. In the embodiment described above, the protective cap 1
Although the case where 0 is integrally formed with the bushing 9 has been described, these may be assembled to the vehicle AC generator 1 as separate parts.

FIG. 3 is a sectional view showing the structure of a modification of the bushing and the protective cap. 4 is a perspective view of the protective cap shown in FIG. As shown in FIGS. 3 and 4, the protective cap 110 in this modification is
It is formed as a separate component from the bushing 109 by using an insulating material such as an insulating resin or a rubber material. The protective cap 110 has a dome shape, and is assembled so as to be integrated with the bushing 109 when the bushing 109 is assembled to the output terminal 54. Also,
The protective cap 110 connects the wiring wire 70 to the output terminal 54.
It has a lid portion 110a that is opened and closed when the wire is connected to.
The lid 110a is opened when the work of tightening and fixing the terminal 72 to the output terminal 54 is performed, and is closed after the work is completed. Further, when the manufactured vehicle alternator is carried into a vehicle manufacturer or the like, the lid 110a of the protective cap 110 is maintained in the closed state. In addition, the protective cap 110 has a lid 110.
It has a locking part 110b for fixing the lid part 110a so as not to open in the closed state of a. This locking portion 110b
Is configured by a fitting portion in which the width of the lid 110a is set to be slightly larger than the width of the opening that appears when the lid 110a is opened. When the lid 110a is closed, the lid 11
Both sides of 0a are constrained by openings so that the lid 110a is not easily opened due to vibration or shock.

Further, in the above-described embodiment, the bushing 9 and the protection cap 10 which insulate and protect the output terminal 54 of the vehicle alternator 1 have been described, but other electric motors such as starters, which are rotary electric machines for vehicles, can be used. The insulation protection of the power supply terminal as the input terminal may be performed using the bushing 9 and the protection cap 10 described above.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an overall configuration of a vehicle AC generator according to an embodiment.

FIG. 2 is a sectional view showing a structure of a bushing and a protective cap.

FIG. 3 is a sectional view showing a structure of a modified example of a bushing and a protective cap.

FIG. 4 is a perspective view of the protective cap shown in FIG.

FIG. 5 is a diagram showing a structure near a conventional terminal.

FIG. 6 is a diagram showing an outline of a procedure for attaching the terminal shown in FIG. 5 to an output terminal of a vehicle AC generator.

FIG. 7 is a diagram showing an outline of a procedure for attaching the terminal shown in FIG. 5 to an output terminal of a vehicle AC generator.

[Explanation of symbols]

1 Vehicle AC generator 9,109 bushing 10,110 protective cap 10a, 110a lid 10b, 110b Locking part 10c convex part 10d recess 54 output terminals 55 nuts 70 Electric wire for wiring 72 Terminal

Claims (4)

[Claims] 1. A vehicle rotating machine having an input / output terminal for inputting / outputting electric power, a protective member for insulating and protecting the periphery of the input / output terminal, and a protective cap for covering the input / output terminal exposed from the protective member. In the electric machine, the protective cap has a lid part that is integrated with the protective member in a state where the wiring electric wire is not connected and is opened and closed when the wiring electric wire is connected to the input / output terminal. Rotating electric machine for vehicles. 2. The vehicle rotation according to claim 1, wherein the protection cap is integrally formed with the protection member, and includes a locking portion that fixes the lid portion in a state where the lid portion is closed. Electric machinery. 3. The protective cap according to claim 1, wherein the protective cap includes an engaging portion that is integrated with the protective member when assembled and that fixes the lid portion with the lid portion closed. Rotating electric machine for vehicles. 4. The locking portion according to claim 2, wherein the locking portion is a concavo-convex portion or a fitting portion formed on the lid portion and the abutting portion that abuts when the lid portion is closed. A rotating electrical machine for a vehicle.