JPH077616Y2 - Twin clutch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a so-called twin clutch provided with two clutch disks.

[Conventional technology]

Conventionally, the twin clutch shown in FIGS. 5 and 6 has been proposed.

This twin clutch 1 is a so-called pull type,
Between the flywheel 3 and the clutch cover 4 connected by the flywheel ring 2, the flywheel 3
A first clutch disc 5, an intermediate plate 6, a second clutch disc 7, a pressure plate 8 and a diaphragm spring 9 are arranged from the side.

The clutch disks 5 and 7 are provided with facings on the front and rear side surfaces of the outer peripheral portion, and the inner peripheral portion is fixed to an output shaft (not shown).

The intermediate plate 6 is connected to a plurality of first straps 10 provided on the outer circumference of the flywheel ring 2 and is fixed to the flywheel ring 2 so as not to rotate relative to the flywheel ring 2.

The pressure plate 8 is connected to a plurality of second straps 11 provided on the outer circumference of the clutch cover 4, and is fixed to the clutch cover 4 so as not to be rotatable relative to the clutch cover 4.

The outer peripheral edge of the diaphragm spring 9 is the clutch cover 4
, The middle part is pressed against and supported by the fulcrum land 12 of the pressure plate 8 with a clip 13, and the inner peripheral part is connected to a release mechanism (not shown).

A plurality of connecting mechanisms 14 are arranged around the intermediate plate 6 and the pressure plate 8 and connect them to each other. In the connecting mechanism 14, the first base 15 is fixed to the outer peripheral portion of the intermediate plate 6, and the first through hole 16 is provided in parallel with the output shaft. The roll pin 17 is a cylindrical body provided with an axial slit 18 and is inserted into the through hole 16. The second base 19 is fixed to the outer periphery of the pressure plate 8 and has a second through hole 20 facing the first through hole 16. The adjusting pin 21 is inserted into the roll pin 17 and the second through hole 20 from the flywheel 3 side, pulls the intermediate plate 6 and the pressure plate 8 against the straps 10 and 11, and protrudes from the second through hole 20. The part that has been crimped is caulked to prevent it from coming off.

Therefore, due to the urging force of the straps 10 and 11, the head 22 of the adjusting pin 21 is moved to the roll pin 17 and the adjusting pin 21.
The crimped portions 23 of the abutting portions 21 abut on the second base portion 19, respectively, and a predetermined clearance δ is secured between the second base portion 19 and the roll pin 17. The clearance δ corresponds to the relative movement amount between the intermediate plate 6 and the pressure plate 8.

In the above configuration, in the clutch disengaged state, as shown in FIGS. 5 and 6, the head 22 of the adjustment pin 21 is moved to the roll pin 17
The intermediate plate 6 is pulled rearward via the roll pin 17, the adjustment pin 21, etc., and is held in a state in which the connection with the first clutch disc 5 is cut off. On the other hand, the pressure plate 8 is pulled rearward, and the contact between the pressure plate 8 and the second clutch disc 7 is cut off.

Diaphragm spring 9 during clutch engagement
When a pressing force is applied to the pressure plate 8 by the pressure plate 8, the pressure plate 8 gradually moves forward. Here, the sliding frictional force between the roll pin 17 and the first base 15 is larger than the urging force of the first strap 10 and smaller than the pressing force of the diaphragm spring 9 applied to the pressure plate 8. Therefore, the roll pin 17 is the first base 15
It does not slide against.

When the pressure plate 8 continues to move forward, the intermediate plate 6 contacts the first clutch disc 5, and then the intermediate plate 6
The first clutch disc 5, which is pushed by, contacts the flywheel 3. This state is shown in FIG.

When the pressure plate 8 further moves forward, the second
The clutch disc 7 comes into contact with the intermediate plate 6, and then the pressing force of the pressure plate 8 is transmitted to both clutch discs 5, 7. This state is shown in FIGS.

In the clutch disengaged state, when the pressing force from the diaphragm spring 9 is released, the pressure plate 8 moves to the second position.
It is moved backward by the biasing force of the strap 11.

Next, when the pressure plate 8 moves rearward by the clearance δ and the head 22 of the adjusting pin 21 comes into contact with the end face of the roll pin 17, the intermediate plate 6 causes the pressure plate 8 to pass through the adjusting pin 21 and the roll pin 17. It is pulled by and moves backward.

As a result, the contact between the first clutch disc 5 and the flywheel 3, the intermediate plate 6 and the clutch discs 5 and 7, and the contact between the second clutch disc 7 and the pressure plate 8 are sequentially cut off, and the contact is made as shown in FIGS. The clutch is disengaged as shown.

[Problems to be solved by the device]

However, in the twin clutch 1, in the coupling mechanism 14 of the pressure plate 8 and the intermediate plate 6, the amount of crimping of the tip of the adjust pin 21 related to the clearance δ is not constant, and the clearance δ in each coupling mechanism 14 varies. It was

Therefore, in the clutch connecting operation, the intermediate plate 6 first comes into contact with the first clutch disc 5 at a part thereof, and then the intermediate plate 6 and the clutch disc 5 come into overall contact with each other. It was Further, in the clutch disengagement operation, the intermediate plate 6 is disengaged from the first clutch disc 5 at a part thereof and then disengaged entirely. That is, as shown in FIG. 10, it is ideal that the movement of the intermediate plate 6 appears as a solid line in all the connecting mechanisms 14, but in reality, the intermediate plate 6 in each connecting mechanism 14 is actually shown. Was like a dash-dotted line.

Therefore, the twin clutch has a problem that the clutch is not easily disengaged and vibration occurs.

[Means for Solving the Problems]

The present invention was made to solve the above problems,
In the twin clutch, the connecting mechanism (14a) between the intermediate plate (6) and the pressure plate (8) is configured as follows.

That is, as shown in FIGS. 1 to 4, a plurality of cylindrical roll pins (34) are provided on the intermediate plate (6) in parallel with the output shaft, and the pressure plate (6) faces the roll pins (34). A base (36) having an insertion hole (37) is provided, and an adjustment bolt (39) having a head (40) at one end and a boss (41) at the other end is attached to a flywheel ( From the 3) side, insert the cap nut (42) that has the roll pin (34) and the insertion hole (37), and has the raised portions (45) facing each other across the screw hole (44) at one end surface of the nut body (43). , Is screwed into an adjusting bolt (39) protruding from the insertion hole (37), and the rising portion (45) is caulked in the opposite direction, and the boss portion (41) of the adjusting bolt (39) is pressed. .

[Action]

According to the above configuration, when the adjustment bolt (39) is rotated during assembly to adjust the distance between the intermediate plate (6) and the pressure plate (8), the rising portion (45) of the cap nut (42) can be used. The boss portion (41) is held so that the cap nut (42) and the adjusting bolt (39) are prevented from rotating relative to each other. As a result, the distance between the intermediate plate (6) and the pressure plate (8) in each coupling mechanism (14a) is maintained constant.

〔Example〕

A twin clutch according to the present invention, particularly a connecting mechanism 14a between the intermediate plate 6 and the pressure plate 8 will be described with reference to FIGS. In the drawings, except for each part of the coupling mechanism 14a, the same parts or corresponding parts as those of the twin clutch shown in FIGS.

In the coupling mechanism 14a, the first base 31 has a through hole 32, and the through hole 32 is arranged in parallel with the output shaft.
It is fixed to the outer peripheral portion of the intermediate plate 6 at 3.

The roll pin 34 is a cylindrical body provided with an axial slit 35, and is fitted into the through hole 32 of the first base 31.

The second base 36 has an L shape, and a second through hole 37 is formed in one piece. The second through hole 37 faces the roll pin 34 and is fixed to the outer peripheral portion of the pressure plate 8 with a bolt 38. ing.

The adjusting bolt 39 and the cap nut 42 are shown in detail in FIG.

The adjustment bolt 39 has a head portion 40 on one end side and a boss portion 41 having a rectangular cross section on the end face on the other end side. On the other hand, cap nut 42
A cylindrical portion 45 is integrally provided on one side surface of the nut body 43 so as to surround the screw hole 44.

The adjusting bolt 39 and the cap nut 42 are used to roll the adjusting bolt 39 from the side of the first clutch disc 5 to the roll pin.
34, the cap nut 42 is inserted into the second through hole 37, the adjusting bolt 39 protruding from the second through hole 37 is screwed with the cap nut 42, and the rotation amount of the cap nut 42 is adjusted, whereby the intermediate plate 6 and The clearance δ with the pressure plate 8 is adjusted to be constant.

When the adjustment is completed, as shown in FIG. 4, the cylindrical portion 45 is crushed in the opposite direction (arrow m, m ′ direction) and the boss portion 41 of the adjusting bolt 39 is pinched, and the cap nut 42 of the adjusting bolt 39 is tightened. Prevent rotation.

Then, the same operation is performed for all the connection mechanisms 14a, and the intermediate plate 6 in each connection mechanism 14a is
And the clearance δ between the pressure plate 8 and the pressure plate 8 are all set to be equal.

In the twin clutch 1a including the connecting mechanism 14a, as described above, in the clutch disengaged state, the intermediate plate 6 and the pressure plate 8 are biased in opposite directions by the straps 10 and 11, respectively, and the head of the adjust bolt 39 is stopped. The portion 40 contacts the end surface of the roll pin 34, and the clearance Δ is kept constant.

In the clutch connection operation, the intermediate plate 6 moves rearward as the pressure plate 8 moves, and the intermediate plate 6 simultaneously contacts the entire facing of the first clutch disc 5. Further, the entire facing of the first clutch disc 5 simultaneously contacts the flywheel 3.

Even in the clutch disengagement operation, the intermediate plate 6 simultaneously leaves the entire facing surface of the first clutch disc 5.

In the above embodiment, the boss portion 41 of the adjusting bolt 39 is pinched by the cylindrical portion 45. However, the boss portion 41 is not limited to be pinched by the cylindrical portion 45 but protrudes from the screw hole 44 of the nut 43. A pair of upright pieces may be used as long as they have a portion that faces the boss portion 41.

[Effect of device]

As is apparent from the above description, in the twin clutch according to the present invention, as a member that substantially defines the distance between the intermediate plate and the pressure plate, the twin clutch has a head on one end and an end face on the other end. Using an adjusting bolt having a boss portion and a cap nut having an upright portion facing the screw hole on one end face of the nut body, the cap nut is screwed into the adjusting bolt, and the upstanding portion is caulked in the opposing direction. The boss of the adjustment bolt is pressed down.

Therefore, by adjusting the rotation amount of the cap nut,
The distance between the head of the adjusting bolt and the end surface of the cap nut facing the adjusting bolt in each coupling mechanism, that is, the clearance between the intermediate plate and the pressure plate can be made uniform.

Further, by pressing the boss portion at the upright portion, rotation of the cap nut with respect to the adjusting bolt can be prevented, and the clearance can be kept constant.

Therefore, in the twin clutch of the present invention, the intermediate plate and the clutch disc are easily disengaged and connected, and the durability is excellent without vibration.

[Brief description of drawings]

1 to 4 relate to a twin clutch according to the present invention. FIG. 1 is a partial sectional view of the twin clutch in plan view, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. FIG. 4 is a perspective view of the cap nut, and FIG. 4 is a perspective view showing a combined state of the adjust bolt and the cap nut. 5 to 10 relate to a conventional twin clutch,
FIG. 6 is a partial plan view of the twin clutch, FIG. 6 is a sectional view taken along the line VI-VI of FIG. 5, FIGS. 7 and 8 are partial plan views showing respective states of the clutch engaging operation, and FIG. 8 IX
FIG. 10 is a cross-sectional view taken along line IX, showing the relationship between the release amount and the release load when the clutch is disengaged, and the movement amounts of the pressure plate and intermediate plate. 1 ... twin clutch, 2 ... flywheel ring,
3 ... Flywheel, 4 ... Clutch cover, 5 ...
First clutch disc, 6 ... Intermediate plate, 7 ... Second clutch disc, 8 ... Pressure plate, 14a ... Coupling mechanism, 31 ... First base, 32 ... First Through hole, 34 ... Roll pin, 36 ... Second base, 37 ... Second through hole, 39 ... Adjust bolt, 40 ... Head, 41 ... Boss part, 42 ... Cap nut, 43 ...
… Nut body, 44 …… Screw hole, 45 …… Cylinder part.

Claims (1)

[Scope of utility model registration request] 1. A first clutch disc, an intermediate plate, a second clutch disc and a pressure plate are arranged from the flywheel side between a flywheel and a clutch cover, and the intermediate plate is fried. Energize to the wheel side,
In addition, the pressure plate is biased toward the clutch cover, and the intermediate plate and the pressure plate are connected so that they approach and separate from each other, and the clutch is connected, whereby the two clutch discs serve as a flywheel. In a twin clutch that is sandwiched between an intermediate plate and an intermediate plate and a pressure plate, the intermediate plate is provided with a plurality of cylindrical roll pins parallel to the output shaft, and the pressure plate faces the roll pins. A base having an insertion hole is provided, and an adjusting bolt having a head portion on one end side and a boss portion on the end surface on the other end side is inserted from the flywheel side into the roll pin and the insertion hole, and one end surface of the nut body is inserted. Opposite the screw hole The cap nut having a standing portion screwed into the adjusting bolt protruding from the insertion hole, the twin clutch, characterized in that it has 挾圧 the boss portion of the adjusting bolt the raised portions caulked in opposite directions.