JPH11351282A - Clutch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent water in running in a rainy day from passing through holes to intrude and rust a clutch bearing by sticking seals for closing the holes to an armature plate. SOLUTION: This clutch 1 is provided with an armature plate 3 stuck to a clutch disc, a plurality of plate springs 4 are combined with the armature plate 3 at the one ends, and the other ends of these plate springs 4 are combined with a hub through pins 6. The hub is fastened to the drive shaft of a compressor 2 by a bolt 7. Seals 20 closing respective holes 10 are stuck to the armature plate 3. Consequently, even in running of an automobile in a rainy day, because the holes 10 are closed with the seals 20, water is obstructed from intruding a clutch bearing through the holes 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clutch interposed in a power transmission path from a vehicle engine to a compressor for a car air conditioner.

[0002]

2. Description of the Related Art FIGS. 2 and 3 show an example of a conventional clutch of this type. In FIGS.
2 is a compressor for a car air conditioner.

The clutch 1 has an armature plate 3 which is attracted to a clutch disc (not shown). One end of a plurality of (three in the figure) leaf springs 4 is connected to the armature plate 3 by pins 5, and these plates are provided. The other end of the spring 4 is connected to a hub (not shown) by a pin 6. This hub is fastened to the drive shaft of the compressor 2 by bolts 7.

A pulley 8 is provided on a clutch disk,
A belt is stretched between the pulley 8 and a pulley fixed to an output shaft of a traveling engine (not shown). This clutch disk is rotatably supported by a casing 9 of the compressor 1 via a clutch bearing.

By energizing an electromagnetic coil embedded in the clutch disk, the armature plate 3 is attracted to the clutch disk against the resilience of the leaf spring 4, whereby the rotational torque transmitted to the pulley 8 is reduced. The power is transmitted to the drive shaft of the compressor 2 through the armature plate 3, the pin 5, the leaf spring 4, the pin 6, and the hub.

[0006]

In the above-mentioned conventional clutch, the armature plate 3 has a shape such that water does not enter the clutch bearing when the automobile is running on rainy weather, as shown in FIG. Since a plurality of (three in the figure) holes 10 for inserting tools are drilled, water may enter the clutch bearings through the holes 10 when the vehicle is running on rainy weather, causing it to rust. there were.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and its gist is that a plurality of holes for inserting an assembling jig are formed. A clutch having an armature plate provided, wherein a seal for closing the hole is attached to the armature plate.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention is shown in FIG. A seal 20 for closing each hole 10 is attached to the armature plate 3. The other configuration is the same as that of the conventional one shown in FIGS. 2 and 3, and the corresponding members are denoted by the same reference numerals and description thereof will be omitted.

However, even when the vehicle is running on rainy weather, water does not enter the clutch bearing through the hole 10 because the hole 10 is closed by the seal 20.

[0010]

According to the present invention, since the seal for closing the hole is attached to the armature plate, water penetrates into the clutch bearing from the front of the clutch through a plurality of holes for inserting an assembling jig. Can be completely prevented and therefore
Rust of the clutch bearing can be prevented and durability and reliability of the clutch can be improved.

[Brief description of the drawings]

FIG. 1 is a front view of a clutch showing an embodiment of the present invention.

FIG. 2 is a front view of a conventional clutch.

FIG. 3 is a side view of a conventional clutch.

[Explanation of symbols]

 1 clutch 3 armature plate 10 hole 20 seal

Claims (1)

[Claims] 1. A clutch having an armature plate having a plurality of holes for inserting an assembling jig, wherein a seal for closing the holes is attached to the armature plate.