JPH0628944Y2 - Output terminal device for vehicle AC generator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an output terminal device for a vehicle alternator installed in a vehicle such as a passenger car.

[Problems to be Solved by Prior Art and Invention] Generally, in an AC generator (alternator) for this type of vehicle, an output terminal device for rectifying generated AC current by a rectifier and taking it out is provided. It is provided. By the way, when the rectifying device is formed by incorporating a diode in each of the negative and positive side cooling plates which are substantially horseshoe-shaped so as to circulate around the core axis, the output terminal device is generally attached to the positive side cooling plate. Target. Therefore, conventionally, JP-A-61-150260 and JP-A-1-1-1
As shown in Japanese Patent No. 03135, the output terminal device is inevitably cantilevered because the base end portion thereof is only integrally fixed to the plus side cooling plate via members such as screws and bolts. If the output harness connected to the tip is poorly stable and vibrates violently due to machine body vibrations, etc., the terminal bolt and even the cooling plate will vibrate, which will damage the diode. Then, reliability will be reduced.

[Means for Solving the Problems] The present invention has been made in view of the above circumstances, and was devised with the object of providing an output terminal device for a vehicle AC generator that can eliminate these drawbacks.
In a vehicle AC generator configured by using a rectifying device for rectifying an alternating current generated based on rotation of a core shaft, using positive and negative cooling plates having a substantially horseshoe shape so as to circulate around the core shaft. When mounting an output terminal device having an output harness integrally fixed to the tip end on the plus side cooling plate, the base end part of the output terminal device is integrally fixed to the plus side cooling plate. It is formed by a terminal bolt and a terminal collar integrally molded to cover the terminal bolt, and further, a fixing portion is formed on the terminal collar so as to be located on the tip side of the terminal bolt base end portion and further on the tip side. However, it is also characterized in that the fixing portion is integrally fixed to the case bracket.

With this configuration, the present invention remarkably improves the stability of the output terminal device and can suppress the vibration of the harness from propagating to the cooling plate as much as possible.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 is an AC generator for a vehicle, and a front bracket 2 which constitutes a case bracket of the generator 1.
A core shaft 3 is rotatably supported by the rear bracket 2a and bearings 3a and 3b via bearings 3a and 3b. One end of the core shaft 3 protruding from the front bracket 2 side is connected to an engine side by a pulley. 4 is integrally fixed, and a slip ring 5 is fixed to the other end protruding from the rear bracket 2a side. Further, a Lundell type rotor core 6 is integrally fixed between the bearings 3a and 3b of the core shaft 3, and a rotor coil 7 is wound around a coil bobbin 7a provided in the rotor core 6, and the rotor coil 7 is the slip ring. 5 is electrically connected. On the other hand, 8 is a stator coil wound around the stator core 8a and fixed to the inner peripheral surface of the casing, and 9 is a cooling fin fixed to the rotor core 6.

Reference numeral 10 denotes a rectifying device embodying the present invention. The rectifying device 10 is installed between the rear bracket 2a and the rear cover 14, and the positive and negative cooling plates constituting the rectifying device 10 are provided. Both 11 and 12 have a horseshoe shape, and the diodes 13 incorporated therein are laminated in the axial direction of the core shaft 3, but the positive side cooling plate 11 is located on the rear bracket 2a side. The minus cooling plates 12 are arranged so as to face the rear cover 14 side, respectively. On the other hand, reference numeral 15 is an insulating base material which is also formed in a horseshoe shape, and lead wires 17a of the diode 17 are integrally fixed to terminal plates 16 protruding from the inner and outer peripheral edges of the insulating material 15, respectively, and The diode 17 is the rear bracket 2a of each cooling plate 11, 12.
Are integrally embedded in the mounting holes 11a and 12a formed on the side plate surface. Further negative cooling plate 12
Comb-shaped cooling fins 12b are formed on the outer peripheral edge of the positive cooling plate 11 and cooling fins 11b, 1
1c is formed. In the drawing, reference numeral 18 is a brush that is in sliding contact with the slip ring 5.

On the other hand, 19 is an output terminal device embodying the present invention, in which the tip of the output harness 24 is fixed by screws.
a terminal collar 19b is integrally molded with a, and the base end portion 19 of the terminal bolt 19a is
c is integrally fixed to the plus side cooling plate 11 with a bolt 23. Furthermore terminal color 19
In b, the fixing portion 1 is located closer to the tip side than the base end portion 19c.
9d is formed so as to project, and the fixed portion 19d has a screw 23.
It is configured to be integrally fixed to the rear bracket 2a by a.

Further, in the figure, 20 is a screw for fixing the cooling plates 11 and 12 to each other, 21 is an insulating material, and 22 is a terminal group for connecting a stator coil formed on the outer periphery of the insulating base material 15 so as to project.

In the embodiment of the present invention constructed as described above, the core shaft 3 rotates in association with the driving of the engine, and the alternating current generated in the stator coil 8 is rectified by the rectifying device 10 based on the rotation of the core shaft 3 and output. Although it is taken out from the terminal device 19 through the harness 24, the output terminal device 1
In No. 9, even if the provisional harness 24 vibrates violently due to machine body vibration or the like, the vibration is surely prevented from propagating to the plus side cooling plate 11.

That is, in this device, the terminal collar 19b constituting the output terminal device 19 has the fixing portion 19d protruding from the middle thereof, and the fixing portion 19d is integrally fixed to the rear bracket 2a. Terminal device 1
9 is stabilized by being firmly supported integrally with the rear bracket 2a, and even if the harness 24 vibrates violently due to machine body vibration or the like, the vibration is reliably transmitted by the rear bracket 2a via the fixing portion 19d. The problem of being received and propagating to the plus side cooling plate 11 can be effectively suppressed, and the rectifying device 10 can be stabilized, and the diode 17 is damaged. It can be reliably reduced and the reliability can be greatly improved.

[Effects] In summary, the present invention is configured as described above, and the terminal collar that constitutes the output terminal device has the fixing portion projecting from the middle portion thereof integrally fixed to the rear bracket. As a result, the output terminal device is firmly supported integrally with the rear bracket and is stabilized, and even if the harness vibrates violently due to machine vibration or the like, the vibration can be reliably transmitted by the rear bracket via the fixing part. It is possible to suppress the problem that it is received and supported and propagates to the positive side cooling plate, and it is possible to stabilize the rectifier, and it is possible to reliably reduce problems such as damage to the diode. , The reliability can be greatly improved.

[Brief description of drawings]

The drawings show an embodiment of an output terminal device in a vehicle alternator according to the present invention. FIG. 1 is a partially cutaway side view of the vehicle alternator, and FIG. 2 is a rectifying device. FIG. 3 is a rear view, FIG. 4 is a side view, FIG. 5 is a front view of the output terminal device, FIG. 6 is a front view of the same as above, and FIG. . In the figure, 1 is a vehicle alternator, 2a is a rear bracket,
3 is a core shaft, 10 is a rectifying device, 11 is a positive side cooling plate,
Reference numeral 12 is a minus side cooling plate, 17 is a diode, 19 is an output terminal device, 19a is a terminal bolt, 19b is a terminal collar, 19c is a base end portion, and 19d is a fixed portion.

Claims (1)

[Scope of utility model registration request] 1. A vehicle comprising a rectifying device for rectifying an alternating current generated based on rotation of a core shaft, using positive and negative cooling plates having a substantially horseshoe shape so as to circulate around the core shaft. In an alternator for electric use, an output terminal device having an output harness integrally fixed to a tip portion is attached to the plus side cooling plate. The output terminal device has a base end portion integrated with the plus side cooling plate. And a terminal collar integrally molded to cover the terminal bolt, and the terminal collar is positioned closer to the tip side than the base end of the terminal bolt. An output terminal device for an alternator for a vehicle, wherein a fixing portion is formed so as to project, and the fixing portion is integrally fixed to a case bracket.