JPS6230460Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a terminal device in an AC generator for charging storage batteries used in vehicles, particularly automobiles.

First, FIG. 1, which shows a general electric circuit of this type of alternator, will be explained. 1 is an armature winding of the alternating current generator, 2 is a field winding of the alternator, 3 is a full-wave rectifier for rectifying the alternating current output of the generator, and 4 is a current supply to the field winding 2. 5 is a key switch, 6 is a battery mounted on the vehicle, 7 is an output terminal of the alternating current generator, and 8 is an electrical load mounted on the vehicle. In FIG. 2, 9 is a bowl-shaped bracket of the alternator, and 31 is a horseshoe-shaped cooling fin for the rectifier, which is fastened and fixed to the bracket 9 with bolts (not shown) and bolts 12, and the plurality of rectifiers 3 are connected to the same rectifier. Each is fixed on a flat surface. Reference numeral 10 denotes a connecting element which is fixed with a bolt 12 through an insulator 11 and connects to the lead wire 1a of the armature winding 1.
is connected to. Reference numeral 7 denotes an output terminal, which is fastened and fixed with the bolt 12 and nut 14 via an insulator 13 to establish an electrical connection.

Since the conventional terminal device is configured as described above, the connection terminal 10 and the output terminal 7 are connected to the bracket 9.
Therefore, insulators 11 and 13 are interposed between each terminal 10 and 7 and bracket 9, resulting in a complicated structure and very poor productivity. In addition, output terminal 7
Since the nut 14 is exposed to the outside of the bracket 9, there are drawbacks such as deformation when dropped, the need for a cover to prevent short circuits caused by metal pieces, and to prevent rust.

This invention was made in order to eliminate the drawbacks of the conventional ones as described above, and the purpose is to provide a terminal device for a vehicle alternator that has a simple configuration and is suitable for productivity by omitting connection terminals. It is said that

An embodiment of this invention will be described below with reference to FIGS. 3 to 5. First, in Fig. 3, 3a,
Reference numeral 3b denotes a cooling fin for the positive rectifier and a cooling fin for the negative rectifier that are provided to face each other in the radial direction.
a and 15b are each fixed by soldering. Each of the rectifying elements 15a, 15b is connected to each cooling fin 3a,
3b, and each lead terminal 16a, 16b of each rectifying element 15a, 15b all extends in the same direction. 71 is the pair of lead terminals 16a, 1
These pair of lead terminals 16 provided between 6b
A, 16b and an output terminal 17 integrally soldered to the lead wire 1a of the armature winding 1 are external connectors inserted into the bracket 9 and connected to the output terminal 71.

That is, in this embodiment, each rectifier cooling fin 3a, 3b and these fins 3
Each rectifying element 15a, 15b fixed to a, 3b
are arranged so as to face each other in the radial direction, lead terminals 16a and 16b of each rectifying element 15a and 15b are led out uniformly in the axial direction, and an output terminal 71 is sandwiched between these led out lead terminals 16a and 16b. If these lead terminals 16a, 16b, output terminal 71, and lead wire 1a of armature coil 1 are held together and soldered, these lead terminals 16a, 16b, output terminal 71, and lead wire 1a will be soldered. The wiring is done at the same time and the output terminal 7
1 can be fixed. Therefore, there is no need for the bolt 12, nut 14 and insulators 11, 13 for connecting the connecting terminal 10 and the output terminal 7, as in the conventional case.
The configuration is simple, and the output terminal 71 does not protrude outside the bracket 9 as in the conventional case.
There is no problem of damage when falling, and furthermore, a protective cover can be made unnecessary. In the above, the full-wave rectifying elements 15a and 15b that rectify the output of the alternating current generator are illustrated as the rectifying elements of the rectifier, but as shown in FIG. It can also be applied. That is,
FIG. 4 shows a device having a neutral point voltage rectifier 18 in addition to the full-wave rectifier 3, and a device applied to the neutral point output terminal 19. Full-wave rectifying elements 15a, 15b and neutral point voltage rectifying elements 18a, 18b are radially opposed to positive rectifier cooling fin 3a and negative rectifier cooling fin 3b, which are substantially similar to and arranged opposite to each other. The above neutral point voltage rectifier element 1 is fixed by soldering.
An output terminal 19 is sandwiched between the lead terminals 8a and 18b, and these lead terminals and the output terminal 19 are integrally soldered to the lead wire 1a of the armature winding 1. Furthermore, in the above description, the rectifier cooling fins 3a, 3b and the rectifier elements 15a, 15
Although the fins 3, 18a, and 18b are radially opposed to each other, as shown in FIG.
a, 3b and each rectifying element 15a, 15b, 18
a and 18b may be arranged to face each other in the axial direction. In this case, the output terminals 71 and 19 are led out in the radial direction.

As described above, according to this invention, the lead terminals of each rectifying element are led out in the same direction, and the output terminal is sandwiched between these lead terminals and held in position, and these lead terminals and the lead wire of the armature winding are By fixing the output terminal together, electrical connection and fixing of the output terminal can be performed at the same time, which reduces the number of parts and simplifies the structure. Furthermore, since the output terminal is provided inside the bracket, there is no deformation of the output terminal when it is dropped, there is no short circuit due to metal pieces, and weather resistance is also improved.

[Brief explanation of the drawing]

Fig. 1 is a general electrical circuit diagram of an alternator, Fig. 2 is a cross-sectional side view showing a conventional terminal device of an alternator, and Fig. 3 is a terminal device of an alternator according to an embodiment of this invention. FIG. 4 is an electric circuit diagram showing another embodiment of this invention, and FIG. 5 is a sectional side view showing another embodiment of this invention. In the figure, 1 is the armature winding, 1a is the lead wire, 3
a, 3b rectifier fins, 7, 71, 19 are output terminals, 9 is a bracket, 15a, 15b are rectifying elements, 16a, 16b are lead terminals, 17 is an external connector, 18 is a neutral point voltage rectifier, 18a, 18
b is a neutral point voltage rectifying element. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] A cooling fin for a positive rectifier and a cooling fin for a negative rectifier that are provided facing each other in a bracket of an automotive alternator; a plurality of rectifying elements that are fixed to each of the cooling fins for the rectifier so as to face each other; Lead terminals led out in the same direction from these rectifying elements are held between these lead terminals and held in position, and are fixed integrally with the lead terminals and the lead wire of the armature winding within the bracket. A terminal device for a vehicle alternator, comprising an output terminal arranged and connected to an external connector inserted into the bracket.