JP2002199651A - Rotary generator for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary generator for vehicle capable of improving workability in fixing a wire for wiring. SOLUTION: The rotary generator comprises a bushing 9 and a protection cap 10 to protect insulation of an output terminal 51. The cap 10 is composed of a surrounding part 100 to cover exposed parts of the output terminal 51 and a connecting part 102 to connect the surrounding part 100 to a rear cover 7. The surrounding part 100 is roughly shaped like a bowl, and a coronary mounting part 104 to mount the surrounding part 100 on an outer edge part of the bushing 9 is formed at an edge part of an opening side of the surrounding part 100. At an edge part of the connecting part 102, a latching part 108 to fix to a mounting hole 71 formed on the rear cover 7, so that the cap 10 can be mounted rotatably on the rear cover 7 with insertion of the latching part 108 into the hole 71.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotating electric machine for vehicles mounted on passenger cars, trucks and the like.

[0002]

2. Description of the Related Art Conventionally, a bushing, which is a resin insulating member for protecting the periphery of an output terminal, is attached to an AC generator for a vehicle. 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 for tightening and fixing the bushing and another nut attached to the outside thereof. .

Incidentally, depending on the mounting position of the vehicle alternator, etc., rainwater, washing water, or the like may enter the vicinity of the output terminal or dust may easily accumulate. A protective cap may be used to protect the connection part of the terminal.

[0004] For example, Japanese Utility Model Publication No. Hei 7-13413 discloses a protective cap made of a soft member which is provided in advance on a wiring wire and has a shape to cover an output terminal together with its base during wiring. ing.

[0005]

Generally, in a wiring wire assembling process, a large number of wiring wires are sometimes bundled and stored, and one wire is taken out of the bundle to obtain a vehicle AC. The terminal at the tip is attached to the output terminal of the generator.

However, since the protective cap is attached to the wiring wire disclosed in the above publication, the protective cap may be damaged when one of the bundled wiring wires is taken out. In addition, the protective cap needs to be replaced or re-attached, and the workability is remarkably deteriorated.

[0007] Such a problem can be avoided by storing the wiring wires individually one by one or in a small number of bundles. However, since the working space is limited, there is a practical solution. I can't say. In addition, it is conceivable to store the protective cap separately from the wiring cable and attach the protective cap at the same time as attaching the wiring cable to the output terminal, but it is necessary to remove the protective cap from the storage location each time. In the worst case, this method is not a good solution because it is possible to forget to attach the protective cap.

The present invention has been made in view of the above points, and an object of the present invention is to provide a rotating electric machine for a vehicle which can improve workability when assembling wiring wires. .

[0009]

In order to solve the above-mentioned problems, a rotating electric machine for a vehicle 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 protection cap for covering the input / output terminals exposed from the protection member. The protection cap includes a surrounding portion surrounding the exposed portions of the input / output terminals, and a surrounding portion provided on the rotating electric machine body provided with the input / output terminals. And a connecting portion for connecting A protective cap for covering the input / output terminals is attached to the rotating electric machine main body, and there is no need to attach it to the wiring wire side. For this reason, when taking out and assembling one from many bundled wiring wires, the protection cap is not damaged or dropped, and it is not necessary to replace or reinstall the protection cap. Workability can be improved. Further, since the protective cap is attached to the rotating electric machine main body, it is possible to prevent the user from forgetting to attach the protective cap.

[0010] At the end of the above-mentioned connecting portion, a locking portion for locking the connecting portion to the rotary electric machine main body is provided, and the connecting portion is rotatably attached to the rotary electric machine main body by this locking portion. Is desirable. Since the connecting portion is rotatably locked to the rotating electric machine main body, no matter what position the surrounding portion is attached to, or even if the wiring wire is attached in any direction. ,
The direction of the protective cap can be easily adjusted.

Further, the above-mentioned engaging portion has a substantially conical shape, and by inserting the engaging portion into a mounting hole formed in the rotating electric machine main body, the connecting portion is connected to the rotating electric machine main body. It is desirable to make a connection. The protection cap can be easily attached to the rotating electric machine main body only by inserting the locking portion at the end of the connecting portion into the mounting hole formed in the rotating electric machine main body.

Further, the above-mentioned engaging portion has an annular shape, and it is desirable to connect the connecting portion to the rotating electric machine body by inserting a protective member through the engaging portion. Thus, the protective cap can be attached without particularly processing the rotating electric machine main body, and a change required when attaching the protective cap to the rotating electric machine side can be minimized.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A vehicle AC generator according to an embodiment of the present invention will be described below in detail with reference to the drawings.

[First Embodiment] FIG. 1 is a sectional view showing the overall configuration of an automotive alternator according to a first embodiment.
The automotive alternator 1 shown in FIG. 1 includes a stator 2, a rotor 3, a brush device 4, a rectifier 5, a frame 6, a rear cover 7, a pulley 8, and the like.

The stator 2 includes a stator core 21 and three-phase stator windings 23 wound at predetermined intervals around a plurality of slots formed in the stator core 21.

The rotor 3 has a field winding 31 formed by winding an insulated copper wire in a cylindrical and concentric manner, each of which has a length of 6 mm.
The rotation axis 33 is provided by the pole core 32 having the claw portions.
Has a structure sandwiched from both sides. Also,
An axial cooling fan 34 is attached to the end face of the pole core 32 on the front side by welding or the like 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 face of the rear pole core 32 by welding or the like to discharge the cooling air sucked from the rear side in the radial direction.

The brush device 4 is composed of the rectifier 5 and the rotor 3
And a slip ring 36 formed on the rotating shaft 33 of the rotor 3.
37 are provided with brushes 41 and 42 for pressing the respective brushes.

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 including a wiring electrode therein. And a positive-side radiator plate and a negative-side radiator plate each having three rectifying elements attached thereto, and an output terminal 51 attached to the positive-side radiator plate and used for extracting output power to the outside. Have. Three-phase full-wave rectification is performed by a total of six rectifying elements attached to each heat sink. A resin bushing 9 as a protection member is provided around the output terminal 51 for the purpose of insulating protection. A protective cap 10 made of resin is attached to the bushing 9 so as to cover the connection portion when the wiring wire 11 is connected to the output terminal 51. 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 frame 3 supports the rotor 3 so as to be rotatable about a rotation shaft 33, and the outer periphery of the pole core 32 of the rotor 3. Is fixed to the stator 2 disposed with a predetermined gap therebetween. The frame 6 is provided with a cooling air discharge window at a portion facing the stator winding projecting from the axial end face of the stator core 21 and a cooling air intake window at the axial end face.

The rear cover 7 includes a brush device 4, a rectifying device 5 and an I
This is to cover the entire C regulator 12 and protect them. A mounting hole 71 for connecting the protective cap 10 is formed at a predetermined position on the rear end surface of the rear cover 7.

AC generator 1 for vehicle having the above structure
Is connected to the pulley 8 via a belt or the like by an engine (not shown).
When the rotational force is transmitted, the rotor 3 rotates in a predetermined direction. In this state, by applying an excitation voltage to the field winding 31 of the rotor 3 from the outside, each claw of the pole core 32 is excited, and a three-phase AC voltage can be generated in the stator winding 23. The DC output power is taken out from the output terminal of the rectifier 5.

Next, details of the protective cap 10 will be described. FIG. 2 is a diagram showing a detailed shape of the protective cap and a procedure for assembling the wiring wires 11.

As shown in FIG. 2, the protective cap 10 according to the present embodiment includes a surrounding portion 100 that covers a portion where the output terminal 51 is exposed from the bushing 9, and a connecting portion 102 that connects the surrounding portion 100 to the rear cover 7. ing.

The surrounding portion 100 has a substantially bowl shape, and a crown portion 104 for attaching the surrounding portion 100 to the outer edge of the bushing 9 is formed at the opening end. A plurality of claws 106 are formed at the tip of the crown portion 104 so that the surrounding portion 100 does not fall off after the surrounding portion 100 is crowned on the outer edge of the bushing 9.

The connecting portion 102 is a rod-shaped or string-shaped member for connecting between the surrounding portion 100 and the mounting hole 71 of the rear cover 7. At the end of the connecting portion 102 on the rear cover 7 side, a locking portion 108 for fixing the end of the connecting portion 102 to the mounting hole 71 is provided. This locking part 10
8 has a conical shape in which the diameter of the bottom is larger than the inner diameter of the mounting hole 71, and is attached by being inserted into the mounting hole 71. Further, the outer diameter of the connecting portion 102 connected to the locking portion 108 is set smaller than the inner diameter of the mounting hole 71, and when the locking portion 108 is inserted into the mounting hole 71, the connecting portion 102 and the Is rotatable.

The procedure for attaching the wiring electrode 11 and the protective cap 10 is as follows.

First, the through-hole of the terminal 12 attached to the end of the wiring electrode 11 is passed through the output terminal 51, and is fastened and fixed with a nut 53 from above. Output terminal 5
1 includes a nut 52 for tightening and fixing the bushing 9.
The terminal 12 is fixed by sandwiching and tightening the terminal 12 with these nuts 52 and 53.

Next, the protective cap 1 in which the locking portion 108 of the connecting portion 102 is mounted in the mounting hole 71 of the rear cover 7
0 is attached to the outer edge of the bushing 9 by being crowned.
At this time, the claw 106 of the crown 104 is locked to the outer edge of the bushing 9 so that it does not easily fall off.

As described above, in the vehicle alternator 1 of the present embodiment, the protective cap 10 covering the output terminal 51 is attached to the vehicle alternator 1 main body (rear cover 7), and the wiring wire 11 side There is no need to attach to Therefore, when one of the bundled wiring wires 11 is taken out and assembled, the protective cap 10 does not break or fall off, and there is no need to replace or reattach the protective cap 10. Therefore, workability can be improved. In addition, the protective cap 10 is
, It is possible to prevent the user from forgetting to attach the protective cap 10.

[Second Embodiment] In the first embodiment, the mounting holes 71 formed in the rear cover 7 are provided.
Although the end portion of the protective cap 10 is fixed by attaching to the above, another fixing method may be used.

FIG. 3 is a view showing the detailed shape of the protective cap according to the second embodiment and the state of attachment thereof. The overall configuration of the vehicle alternator except for the protective cap is substantially the same as that shown in FIG. 1, and is different in that the mounting hole 71 formed in the rear cover 7 is not required.

As shown in FIG. 3, the protective cap 10A of the present embodiment comprises an enclosing portion 100 and a connecting portion 102A. The surrounding portion 100 is the same as that included in the protective cap 10 shown in FIG. 2, and a detailed description thereof will be omitted.

The connecting portion 102A is a rod-shaped or string-shaped member for connecting between the surrounding portion 100 and the bushing 9. An annular locking portion 110 is provided at the end of the connecting portion 102A on the side opposite to the surrounding portion. The inner diameter d of the locking portion 110 is the outer diameter of the outer edge of the bushing 9 (the outer diameter of the flange).
D1 and the outer diameter D of the root of the bushing 9
It is set larger than 2.

The attachment of the locking portion 110 is performed when the bushing 9 is assembled. That is, the bushing 9 is inserted into the output terminal 51 in a state where the locking portion 110 is passed through the outer peripheral side of the bushing 9, and then the nut is fixed by a nut 52. Thus, the locking of the locking portion 110 is completed simultaneously with the assembly of the bushing 9. Subsequent wiring wires 1
1 and the surrounding portion 100 are mounted in the same manner as the protective cap 10 of the first embodiment.

As described above, when the locking portion 110 for locking the connecting portion 102A of the protective cap 10A to the vehicle alternator is formed in an annular shape, and the bushing 9 is passed through, the protective cap 10A is attached. Is the rear cover 7
Since no mounting hole is required, no design change is required, and the rear cover 7 having the same shape can be used when there is an automotive alternator that does not require the protective cap 10A. Cost reduction by sharing is possible.

[Third Embodiment] FIG. 4 is a view showing a detailed shape of a protective cap according to a third embodiment and an attached state thereof. This protection cap 10B is different from the protection cap 10A in that the structure of the locking portion 110 of the protection cap 10A shown in FIG. 3 is changed, and the surrounding portion 100 shown in FIGS. 2 and 3 is used as it is.

As shown in FIG. 4, the protective cap 10B of the present embodiment comprises an enclosing portion 100 and a connecting portion 102B. The connecting portion 102B is a rod-shaped or string-shaped member that connects between the surrounding portion 100 and the bushing 9. At the end of the connecting portion 102B on the side opposite to the surrounding portion, an engaging portion 112 that is formed into an annular shape by connecting a part thereof is provided. The locking portion 112 is partially divided, and a through hole 116 is formed at one of the divided ends, and a protrusion 114 is formed at the other divided end so as to be inserted into the through hole 116. By fitting the protrusion 114 into the through-hole 116, the entire locking portion 112 is formed in an annular shape. The inner diameter d of the locking portion 112 is smaller than the outer diameter D1 of the outer edge portion of the bushing 9 and the outer diameter D of the root portion of the bushing 9.
It is set larger than 2.

The attachment of the locking portion 112 can be performed after the completion of the assembly of the bushing 9 irrespective of the timing of assembling the bushing 9. That is,
In a state where the bushing 9 is assembled, the protective cap 10B before the projection 114 is fitted into the through hole 112 is prepared, and after the locking portion 112 is wound around the outer periphery of the bushing 9, the projection 114 is inserted into the through hole 112. Is inserted. As a result, the locking portion 112 does not drop off from the outer peripheral portion of the bushing 9, and the attachment of the connecting portion 102B to the vehicle alternator is completed. Subsequent attachment of the wiring wires 11 and attachment of the surrounding portion 100 are performed in the same manner as the protection cap 10 of the first embodiment and the protection cap 10A of the second embodiment.

As described above, when the connecting portion 102B of the protective cap 10B is formed in an annular shape to lock the connecting portion 102B to the vehicle alternator and the bushing 9 is passed through, the mounting of the protective cap 10B is performed. As in the second embodiment, the mounting holes formed in the rear cover 7 are not required as in the second embodiment, so that the design change is not required and the cost can be reduced by sharing the rear cover 7. Moreover, since the protective cap 10B of the present embodiment can be attached at an arbitrary timing after the attachment of the bushing 9, changes in the assembling process can be reduced. In addition, manufacturing can be facilitated due to an increase in the degree of freedom of the assembling process.

Further, even if the protection cap 10B needs to be replaced due to damage or the like after the assembly of the vehicle alternator is completed, it is not necessary to remove the bushing 9 each time. The replacement of the protection cap 10B is facilitated.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. In the first embodiment described above, the protective cap 10 is mounted by forming the mounting hole 71 in the rear cover 7. However, the protective cap 10 may be mounted by forming a mounting hole in the frame 6 other than the rear cover 7, for example. Good.

Further, in each of the above-described embodiments, the bushing 9 and the protective cap 10 for insulating and protecting the output terminal 51 of the vehicle alternator have been described. The insulation protection of the power supply terminal as an input terminal may be performed by using the bushing 9 and the protection cap 10 described above.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating an overall configuration of a vehicle alternator according to a first embodiment.

FIG. 2 is a diagram illustrating a detailed shape of a protective cap according to the first embodiment.

FIG. 3 is a diagram illustrating a detailed shape of a protective cap according to a second embodiment.

FIG. 4 is a diagram illustrating a detailed shape of a protective cap according to a third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vehicle alternator 7 Rear cover 9 Bushing 10 Protective cap 11 Wiring wire 51 Output terminal 71 Mounting hole 100 Surrounding part 102 Connecting part 104 Crown part 106 Claw 108 Lock part

Claims (4)

[Claims] An input / output terminal for inputting / outputting electric power, a protection member for insulating and protecting the periphery of the input / output terminal, and a protection cap for covering the input / output terminal exposed from the protection member. A rotating electric machine for a vehicle, wherein the cap has a surrounding portion surrounding the exposed portion of the input / output terminal, and a connecting portion connecting the surrounding portion to a rotating electric machine main body provided with the input / output terminal. 2. The connecting part according to claim 1, wherein an end of the connecting part is provided with a locking part for locking the connecting part to the rotating electrical machine main body, and the connecting part is used to lock the connecting part. A rotating electrical machine for a vehicle, which is rotatably mounted on a rotating electrical machine body. 3. The connecting portion according to claim 2, wherein the locking portion has a substantially conical shape, and the locking portion is inserted into a mounting hole formed in the rotating electric machine main body. A rotating electric machine for a vehicle, wherein the electric rotating machine is connected to the rotating electric machine main body. 4. The rotating electrical machine according to claim 2, wherein the locking portion has an annular shape, and the connecting portion is connected to the rotating electric machine main body by inserting the protection member through the locking portion. A rotating electric machine for a vehicle.