JPS5931941Y2 - double plate clutch - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improvement of a multi-disc clutch.

A double-plate clutch has an intermediate plate connected to an engine flywheel or a flywheel ring integrally attached to the flywheel via a strap plate, and a clutch cover attached to the flywheel ring via a strap plate. A pressure plate is connected to the flywheel, and a clutch driven plate is provided between the flywheel and the intermediate plate and between the intermediate plate and the pressure plate, and when the clutch is connected, the clutch driven plate acts on the pressure plate. The respective members are pressed into contact with each other by a clutch spring, and when the clutch is disengaged, the members are separated by retracting the pressure plate against the force of the clutch spring.

When the clutch is disengaged, the intermediate plate is caused to move backward due to the pulling force of the strap plate, but if this backward movement is not regulated within a predetermined range,
When the clutch is disengaged, the intermediate plate retreats and presses the clutch driven plate disposed between the intermediate plate and the pressure plate, resulting in poor clutch disengagement.

Therefore, a stopper is generally provided to restrict the amount of retraction of the intermediate plate.

However, when the stopper is fixed to the intermediate plate, if the clutch driven plate wears out and the intermediate plate moves forward by a predetermined amount, the stopper loses its function when the clutch is disengaged.

Therefore, it is desirable to always keep the amount of retraction of the intermediate plate constant when the clutch is disengaged, and for this purpose, the stopper may be configured to retract by the amount that the intermediate plate advances as the clutch driven plate wears.

The present invention has been devised in view of the above points, and will be specifically explained below based on the illustrated embodiments.

1 and 2, 1 is an engine flywheel, 2 is a flywheel ring integrally attached to the flywheel 1, and 3 is a clutch attached to the flywheel ring 2 by a tightening bolt 4. It's a cover.

Reference numeral 5 denotes an intermediate plate disposed between the flywheel 1 and the flywheel ring, and is provided with a hole 51 penetrating in the axial direction on its outer periphery.

This intermediate plate 5 is connected to the flywheel ring 2 by a strap plate 7 attached to the flywheel ring 2 by tightening poles 6a and 6b, and in the free state, the strap plate 7 is bent as shown in FIG. The intermediate plate 5 is moved to the right in the figure, that is, in the backward direction.

Reference numeral 8 denotes a pressure plate connected to the clutch cover 3 by a strap plate 10 attached to the clutch cover 3 by tightening plates 9a and 9b. It is pressed in the forward direction, and can be moved to the right in the figure against the force of the clutch spring 11 by a known clutch release mechanism (not shown) when the clutch is disengaged.

Reference numerals 12 and 13 designate clutch driven plates disposed between the flywheel 1 and the intermediate plate 5 and between the intermediate plate 5 and the pressure plate 8, respectively.

Reference numeral 20 denotes a stopper device disposed in a hole 51 provided in the intermediate plate 5, which will be explained below based on FIGS. 3 and 4.

The stopper device 20 includes a first rod 21 having a female thread 21a at the center of the rear end, a tapered portion 22a at the center tapering toward the pressure plate side, and a female thread 21a at the tip. A second screw with a mating male thread 22b
a rod 22, a plurality of balls 23 disposed on the tapered portion 22a of the rod 22, and a washer 24 disposed between the balls 23 and the rear end surface of the first rod 21. The ball 23 is always pressed to the right in the figure by a spring 25 that urges the ball 23 against the tapered portion 22a and the inner surface of the hole 51C.

The stopper device 20 has a first rod 21 and a second rod 22 integrally arranged, and is slidably disposed in a hole 51. , the two rods 21, 22
can move to the right in the figure, that is, to the flywheel ring 2 side, but its movement is restricted to the left, that is, to the flywheel 1 side.

That is, as shown in FIG. 3, the intermediate plate 5 moves to the left in the figure, that is, to the flywheel 1 side, and the first rod 2
When the tip of the ball 23 comes into contact with the flywheel 1 and a force is applied to the right side in the figure, the ball 23 is moved to the tapered part 22 a
Since the rods 21 and 22 move in the axial direction along the axis against the force of the spring 25, when the engagement between the ball 23 and the inner surface of the hole 51 is released, the rods 21 and 22 move to the right, that is, toward the flywheel ring 2 side. Can be done.

Further, as shown in FIG. 4, the intermediate plate 5 moves to the right in the figure, that is, to the flywheel ring 2 side, and the rear end of the second rod 22 comes into contact with the flywheel ring 2 and moves to the left in the figure. When a force is applied, the ball 23 tries to move in the outer circumferential direction along the tapered portion 22a and is pressed against the inner surface of the hole 51, so that the rod 2
1 and 22 are restricted in their movement, and function as a stopper against the movement of the intermediate plate 5 to the right, that is, in the backward direction.

The present invention is constructed as described above, and the pressure plate 8 is moved from the clutch spring 11 by the clutch release mechanism (not shown) from the clutch connected state shown in FIG.
When the intermediate plate 5 is moved back to the right in the drawing against the force, the intermediate plate 5 is moved back to the right by the strap plate 7 as shown in FIG. It comes into contact with the wheel ring 2 and its movement is restricted.

Therefore, when the clutch is disengaged, the intermediate plate 5 moves back significantly, thereby making it possible to prevent clutch disengagement failure caused by pressing the clutch driven plate 13.

Next, if you release the clutch release mechanism to connect the clutch from the state shown in Figure 2, the clutch spring 1
1 causes the pressure plate 8 to move forward to the left in the figure, and as a result, the clutch driven plate 1
3. The intermediate plate 5 and the clutch driven plate 12 are also pushed to the left, and these members are pressed into contact with each other between the flywheel 1 and the pressure plate 8, as shown in FIG. can be connected.

At this time, if the clutch driven plate 12 is worn out, the intermediate plays 1 to 5 move forward by that amount to the left from the initial state.

When the intermediate plate 5 moves forward, the tip of the first rod 21 of the stopper device 20 comes into contact with the flywheel 1, but the stopper device 20 does not move to the right in the figure, that is, to the side of the flywheel ring 2, as described above. Therefore, in response to the wear of the clutch driven plate 12, the intermediate plate 5 moves toward the flywheel ring 2 by the amount that the intermediate plate 5 moves forward.

Therefore, there is no obstacle to the forward movement of the intermediate plate 5, and the distance S between the rear end of the second rod 22 in the stopper device 20 and the flywheel ring 2 can always be kept constant. 5 can be kept constant at all times.

Therefore, even if the clutch driven plate 12 wears, the stopper device 20 always functions in an appropriate state, and prevents poor clutch disengagement caused by the wear of the clutch driven plate 12 and the increase in the amount of movement of the intermediate plate 5. be able to.

[Brief explanation of the drawing]

1 and 2 are cross-sectional views of essential parts of the double-disc clutch according to the present invention showing operating states, FIG. 3 is an enlarged view of the stopper device in FIG. 1, and FIG. 4 is an enlarged view of the stopper device in FIG. 2. It is an enlarged view. 1; Engine flywheel, 2; Flywheel ring, 3; Clutch cover, 5; Intermediate plate, 7; Strap plate, 8; Pressure plate, 10; Strap plate, 11; Clutch spring, 12.
13; Clutch driven plate, 20; Stroke bar
Apparatus, 21; first rod, 22; second rod, 22
a; Part of taper, 23; Ball, 24; Washer, 25
;spring.

Claims (1)

[Scope of utility model registration request] An intermediate plate connected to an engine flywheel or a flywheel ring integrally attached to the flywheel via a strap plate, and a pressure plate connected to a clutch cover attached to the flywheel ring by a strap plate. and a multi-plate clutch including clutch driven plates disposed between the flywheel and the intermediate plate and between the intermediate plate and the pressure plate, wherein a hole is provided in the intermediate plate to penetrate in the axial direction, A stopper device that can move toward the flywheel ring side but has means for restricting movement on the flywheel side is disposed in the hole, and the tip of the stopper device comes into contact when the clutch is connected, and when the clutch is disconnected. A multi-plate clutch characterized in that the rear end of a stopper device is brought into contact with the rear end of the stopper device.