JP5431530B2 - Twin clutch device - Google Patents

Description

  The present invention relates to a twin clutch device, and more particularly to a twin clutch device for transmitting power from an engine to a first input shaft and a second input shaft of a transmission.

  An automatic transmission (AT) is known as means for automatically shifting a vehicle. In recent years, for example, a combination of a torque converter, a plurality of planetary gears, and a clutch has become mainstream. Due to the stepless speed change operation of the torque converter and the automatic switching of a plurality of clutches, the AT does not require the clutch operation by the driver at the time of starting, stopping and shifting required for the manual transmission (MT).

  However, since the torque converter transmits power via a fluid, AT has lower power transmission efficiency than MT that mechanically directly connects the input side and output side to transmit torque. Therefore, the AT has an advantage that the labor of the driver is reduced, but has a disadvantage that the fuel consumption of the vehicle is reduced.

  Therefore, an automatic transmission (AMT) based on the structure of MT has been proposed for the purpose of eliminating the need for clutch operation while ensuring MT transmission efficiency. In this automatic transmission, since the MT clutch operation and the transmission shift operation are automated, it is possible to eliminate the clutch operation while ensuring the same transmission efficiency as the conventional MT.

  However, during the shifting operation, the clutch is disengaged in the same manner as MT, so torque transmission is temporarily interrupted. While the torque transmission is interrupted, the vehicle travels only with inertia without acceleration. Such torque loss greatly affects the acceleration performance of the vehicle and tends to make the driver uncomfortable.

  In order to solve this problem of torque interruption, an automatic transmission employing a twin clutch device has been proposed. Patent Document 1 discloses a twin clutch device having a mechanism for compensating for wear of a clutch disk. In the twin clutch device disclosed in Patent Document 1, a wear-following mechanism is provided for two clutches so that the corresponding diaphragm spring is maintained in the initial state even when the clutch disk of each clutch is worn. it can.

JP 2011-220410 A

  In the twin clutch device of Patent Document 1, the wear tracking mechanism is configured by a member fixed to a flywheel, a member mounted on a pressure plate, and the like, and it is very difficult to assemble each member. Further, in the wear tracking mechanism of Patent Document 1, an adjustment spring is provided to move the adjustment bolt according to the amount of wear, but a slit is formed in the adjustment bolt to fix the end of the adjustment spring. Yes. For this reason, there exists a problem that the intensity | strength of an adjustment bolt falls.

  The subject of this invention is making the assembly | attachment property of a wear tracking mechanism favorable in a twin clutch apparatus.

  Another object of the present invention is to suppress a reduction in strength of members constituting the wear tracking mechanism of the twin clutch device.

  A twin clutch device according to a first aspect of the present invention is a device for transmitting power from an engine to a first input shaft and a second input shaft of a transmission, and a first flywheel to which power is input from the engine, respectively. And the second flywheel, the first pressure plate, the second pressure plate, the first clutch disc assembly, the second clutch disc assembly, the first pressing mechanism, the second pressing mechanism, and the first wear. A tracking mechanism. The first pressure plate is provided so as to be rotatable integrally with the first flywheel and movable in the axial direction. The second pressure plate is provided so as to be rotatable integrally with the second flywheel and movable in the axial direction. The first clutch disk assembly includes a first friction member, and is disposed between the first flywheel and the first pressure plate so as to be connectable to the first input shaft. The second clutch disk assembly includes a second friction member, and is disposed between the second flywheel and the second pressure plate so as to be connectable to the second input shaft. The first pressing mechanism presses the first pressure plate toward the first flywheel. The second pressing mechanism presses the second pressure plate toward the second flywheel. The first wear tracking mechanism is provided on the first pressure plate, and maintains the initial distance between the first pressure plate and the first friction member regardless of the wear of the first friction member.

  Further, the first wear tracking mechanism includes a first adjustment member, a first wear amount detection mechanism, and a first drive member. The first adjustment member is supported so as to be movable in the axial direction with respect to the first pressure plate, and receives the pressing force of the first pressing mechanism to move the first pressure plate to the first flywheel side. The first wear amount detection mechanism is supported so as to be movable in the axial direction with respect to the first pressure plate, and contacts the first flywheel when the first pressure plate is pressed toward the first flywheel. The amount of wear of the first friction member is detected. The first drive member moves the first adjustment member toward the pressing mechanism by the amount of wear detected by the first wear amount detecting mechanism when the pressing force of the first pressing mechanism is released.

The first wear amount detection mechanism is supported by the first pressure plate so as to be movable in the axial direction with respect to the first pressure plate in accordance with the wear of the first friction member, and the pressing force of the first pressing mechanism is released. The movement of the first pressure plate is restricted by contacting the second flywheel.

Here, since the first wear tracking mechanism is provided on the first pressure plate, it is compared with the case where it is constituted by a member fixed to the flywheel or a member attached to the pressure plate as in the conventional device. to, assembly performance is good ing.

The twin clutch device according to the second aspect of the present invention is the device according to the first aspect, wherein the first adjustment member is screwed to the first pressure plate, and the first drive member imparts rotational force to the first adjustment member. Torsion coil spring.

A twin clutch device according to a third aspect of the present invention is a device for transmitting power from an engine to a first input shaft and a second input shaft of a transmission, each of which is a first flywheel to which power is input from the engine. And the second flywheel, the first pressure plate, the second pressure plate, the first clutch disc assembly, the second clutch disc assembly, the first pressing mechanism, the second pressing mechanism, and the first wear. A tracking mechanism. The first pressure plate is provided so as to be rotatable integrally with the first flywheel and movable in the axial direction. The second pressure plate is provided so as to be rotatable integrally with the second flywheel and movable in the axial direction. The first clutch disk assembly includes a first friction member, and is disposed between the first flywheel and the first pressure plate so as to be connectable to the first input shaft. The second clutch disk assembly includes a second friction member, and is disposed between the second flywheel and the second pressure plate so as to be connectable to the second input shaft. The first pressing mechanism presses the first pressure plate toward the first flywheel. The second pressing mechanism presses the second pressure plate toward the second flywheel. The first wear tracking mechanism is provided on the first pressure plate, and maintains the initial distance between the first pressure plate and the first friction member regardless of the wear of the first friction member.

  Further, the first wear tracking mechanism includes a first adjustment member, a first wear amount detection mechanism, and a first drive member. The first adjustment member is supported so as to be movable in the axial direction with respect to the first pressure plate, and receives the pressing force of the first pressing mechanism to move the first pressure plate to the first flywheel side. The first wear amount detection mechanism is supported so as to be movable in the axial direction with respect to the first pressure plate, and contacts the first flywheel when the first pressure plate is pressed toward the first flywheel. The amount of wear of the first friction member is detected. The first drive member moves the first adjustment member toward the pressing mechanism by the amount of wear detected by the first wear amount detecting mechanism when the pressing force of the first pressing mechanism is released.

  The first adjustment member is screwed into the first pressure plate, and the first drive member is a torsion coil spring that applies a rotational force to the first adjustment member.

The first pressure plate has a plurality of block portions arranged at predetermined intervals in the circumferential direction on the outer peripheral portion, and a through-hole extending in the axial direction is formed in the block portion. The first friction amount detection mechanism is provided in each of the plurality of block portions, and includes a first spring holder, a bush, and a second spring holder. The first spring holder is disposed in the through hole so as to be axially movable. The bush is fitted to the outer periphery of one end side of the first spring holder so as not to be relatively rotatable, and is press-fitted into the through hole of the block portion, and slides with the first spring holder with respect to the through hole at a predetermined pressing force or more. Is possible. The second spring holder is fitted to the outer periphery on the other end side of the first spring holder. The torsion coil spring is disposed on the outer periphery of at least a part of the first spring holder and the outer periphery of the second spring holder, and one end of the torsion coil spring is engaged with a radial hole formed in the first spring holder, The other end is engaged with a radial hole formed in the second spring holder.

  Here, the torsion coil spring is supported by the first and second spring holders, and both ends of the torsion coil spring are engaged with radial holes formed in the first and second spring holders, respectively. For this reason, compared with the structure which forms a slit in an adjustment bolt like the conventional apparatus, the strength fall of a member can be suppressed.

The twin clutch device according to the fourth aspect of the present invention is the device of the third aspect, wherein the first adjustment member is formed in a cylindrical shape, and at least a part of the first spring holder is provided inside the first adjustment member. Two spring holders and a torsion coil spring are accommodated.

In the twin clutch device according to the fifth aspect of the present invention, in the device according to the fourth aspect, the first adjustment member and the second spring holder are engaged so as not to be relatively rotatable.

The twin clutch device according to the sixth aspect of the present invention, in the device of the fifth aspect, the outer peripheral surface of the first spring holder and the inner peripheral surface of the second spring holder, a coil spring torsion to the first and second spring holder A groove into which a temporary assembly set pin for prohibiting relative rotation of the first and second spring holders in the assembled state can be inserted.

A twin clutch device according to a seventh aspect of the present invention is a device for transmitting power from an engine to a first input shaft and a second input shaft of a transmission, each of which is a first flywheel to which power is input from the engine. And the second flywheel, the first pressure plate, the second pressure plate, the first clutch disc assembly, the second clutch disc assembly, the first pressing mechanism, the second pressing mechanism, and the first wear. A tracking mechanism. The first pressure plate is provided so as to be rotatable integrally with the first flywheel and movable in the axial direction. The second pressure plate is provided so as to be rotatable integrally with the second flywheel and movable in the axial direction. The first clutch disk assembly includes a first friction member, and is disposed between the first flywheel and the first pressure plate so as to be connectable to the first input shaft. The second clutch disk assembly includes a second friction member, and is disposed between the second flywheel and the second pressure plate so as to be connectable to the second input shaft. The first pressing mechanism presses the first pressure plate toward the first flywheel. The second pressing mechanism presses the second pressure plate toward the second flywheel. The first wear tracking mechanism is provided on the first pressure plate, and maintains the initial distance between the first pressure plate and the first friction member regardless of the wear of the first friction member.

  Further, the first wear tracking mechanism includes a first adjustment member, a first wear amount detection mechanism, and a first drive member. The first adjustment member is supported so as to be movable in the axial direction with respect to the first pressure plate, and receives the pressing force of the first pressing mechanism to move the first pressure plate to the first flywheel side. The first wear amount detection mechanism is supported so as to be movable in the axial direction with respect to the first pressure plate, and contacts the first flywheel when the first pressure plate is pressed toward the first flywheel. The amount of wear of the first friction member is detected. The first drive member moves the first adjustment member toward the pressing mechanism by the amount of wear detected by the first wear amount detecting mechanism when the pressing force of the first pressing mechanism is released.

The first pressing mechanism has a first pressing member for pressing the first pressure plate toward the first flywheel. The second pressing mechanism has a second pressing member that presses the second pressure plate toward the second flywheel. The twin clutch device is disposed between the first pressing member and the second pressing member, and is attached in a direction to separate the first pressing member from the first pressure plate and to separate the second pressing member from the second pressure plate. A return spring is further provided.

A twin clutch device according to an eighth aspect of the present invention is the device according to any one of the first to seventh aspects, provided on the second pressure plate, regardless of the wear of the second friction member of the second clutch disk assembly. A second wear tracking mechanism is further provided for maintaining the distance between the second pressure plate and the second friction member in an initial state. The second wear tracking mechanism includes a second adjustment member, a second wear amount detection mechanism, and a second drive member. The second adjusting member is supported so as to be movable in the axial direction with respect to the second pressure plate, and receives the pressing force of the second pressing mechanism to move the second pressure plate to the second flywheel side. The second wear amount detection mechanism is supported so as to be movable in the axial direction with respect to the second pressure plate, and contacts the second flywheel when the second pressure plate is pressed toward the second flywheel. The amount of wear of the second friction member is detected. The second drive member moves the second adjustment member toward the second pressing mechanism by the amount of wear detected by the second wear amount detecting member when the pressing force of the second pressing mechanism is released.

The twin clutch device according to the ninth aspect of the present invention is the device of the eighth aspect, wherein the second wear amount detection mechanism is movable in the axial direction with respect to the second pressure plate in accordance with wear of the second friction member. While supported by the second pressure plate, the movement of the second pressure plate is restricted when the pressing force of the second pressing mechanism is released.

In the twin clutch device according to the tenth aspect of the present invention, in the device according to the ninth aspect, the second wear amount detection mechanism abuts on the first flywheel when the pressing force of the second pressing mechanism is released. To restrict the movement of the second pressure plate.

  In the present invention as described above, the assembly of the wear following mechanism in the twin clutch device is improved. Moreover, in another aspect of the present invention, it is possible to suppress a decrease in strength of members constituting the wear tracking mechanism of the twin clutch device.

The cross-sectional block diagram of the twin clutch apparatus by one Embodiment of this invention. The figure which shows the structure of a press mechanism. The figure which shows the structure of a 1st wear tracking mechanism, and the structure of a press mechanism. The figure which shows the structure of a 2nd wear tracking mechanism. The figure which shows the structure of a 1st wear tracking mechanism. The figure for demonstrating operation | movement of a 1st wear tracking mechanism.

[overall structure]
FIG. 1 shows a twin clutch device 1 according to an embodiment of the present invention. In FIG. 1, OO is the rotation center line. The twin clutch device 1 transmits power from the engine (arranged on the right side in FIG. 1) to the first input shaft S1 and the second input shaft S2 of the transmission (arranged on the left side in FIG. 1). It is a device. The twin clutch device 1 includes first and second flywheels 2 and 3, first and second pressure plates 4 and 5, first and second clutch disk assemblies 6 and 7, and first and second pressing forces. Mechanisms 8 and 9 and three first and second wear following mechanisms 10 and 11 are provided. Here, for example, the first clutch disk assembly 6 is used when transmitting power at the first speed, the third speed, and the fifth speed, and the second clutch disk assembly 7 is used at the second speed and the fourth speed. Used when transmitting power.

[First and second flywheels 2, 3]
Both the first and second flywheels 2 and 3 are members to which power is input from the engine, and are disposed facing each other in the axial direction. The first and second flywheels 2 and 3 are connected to each other. The distance between the first flywheel 2 and the second flywheel 3 between the axial directions is fixed.

<First flywheel 2>
The first flywheel 2 is an annular and disk-shaped member, and a friction surface 2 a is formed on the outer peripheral portion on the side facing the second flywheel 3. Moreover, although mentioned later for details, in the outer peripheral part of the 1st flywheel 2, the three 1st protrusion 2b and the 2nd protrusion 2c (refer FIG.1 and FIG.2) which protrude to an outer peripheral side are formed, respectively. The three first protrusions 2b and the three second protrusions 2c are arranged at equiangular intervals in the circumferential direction.

<Second flywheel 3>
The second flywheel 3 is an annular and disk-shaped member, and an inner peripheral portion thereof is supported on the outer peripheral surface of the second input shaft S <b> 2 via a bearing 15. Further, a friction surface 3 a is formed on the outer peripheral portion of the second flywheel 3 on the side facing the first flywheel 2. Moreover, although mentioned later for details, in the outer peripheral part of the 2nd flywheel 3, the three 1st protrusion 3b and the 2nd protrusion 3c which each protrude on an outer peripheral side (refer FIG.1, FIG.2, FIG.3 (b)) Is formed. The three first protrusions 3b and the three second protrusions 3c are arranged at equiangular intervals in the circumferential direction.

[First and second pressure plates 4, 5]
The first and second pressure plates 4 and 5 are disposed between the first flywheel 2 and the second flywheel 3, the first pressure plate 4 is on the first flywheel 2 side, and the second pressure plate 5 is It is located on the second flywheel 3 side.

<First pressure plate 4>
The first pressure plate 4 is connected to the first flywheel 2 by a strap plate (not shown), and is arranged so as to be rotatable integrally with the first flywheel 2 and movable in the axial direction. The first pressure plate 4 is formed in an annular and disk shape and faces the friction surface 2 a of the first flywheel 2. Three block portions 4 a that protrude toward the second flywheel 3 are formed on the outer periphery of the first pressure plate 4. The three block parts 4a are arranged at equiangular intervals in the circumferential direction. The first pressure plate 4 is urged to the side away from the first flywheel 2 by the strap plate.

<Second pressure plate 5>
The second pressure plate 5 is connected to the second flywheel 3 by a strap plate (not shown), and is disposed so as to be rotatable integrally with the second flywheel 3 and movable in the axial direction. The second pressure plate 5 is formed in an annular and disc shape and faces the friction surface 3 a of the second flywheel 3. Three block portions 5 a that protrude toward the first flywheel 2 are formed on the outer peripheral portion of the second pressure plate 5. The three block portions 5a are arranged at equiangular intervals in the circumferential direction. The second pressure plate 5 is urged to the side away from the second flywheel 3 by the strap plate.

[First and second clutch disk assemblies 6, 7]
<First clutch disk assembly 6>
A first clutch disk assembly (hereinafter simply referred to as “first clutch”) 6 transmits power from the first flywheel 2 to the first input shaft S1, and includes the first flywheel 2 and the first pressure. It is arranged between the plate 4. The first clutch 6 includes a first friction member 17, a first connection ring 18, and a first spline hub 19.

  The first friction member 17 has a pair of friction facings and a cushioning plate, and the inner peripheral portion of the cushioning plate is fixed to the first connection ring 18 via a rivet 20. The first connecting ring 18 has a plurality of teeth formed on the inner periphery. The first spline hub 19 has a hub 19a formed on the inner peripheral portion, and a disk-shaped flange 19b extending from the outer peripheral surface of the hub 19a to the outer periphery. A spline is formed on the inner peripheral surface of the hub 19a, and the spline engages with the first input shaft S1. In addition, a plurality of teeth are formed on the outer peripheral portion of the flange 19 b, and these teeth mesh with the teeth of the first connection ring 18.

<Second Clutch Disc Assembly 7>
The second clutch disc assembly (hereinafter simply referred to as “second clutch”) 7 transmits power from the second flywheel 3 to the second input shaft S2, and includes the second flywheel 3 and the second pressure. It is arranged between the plate 5. The second clutch 7 includes a second friction member 22, a second connection ring 23, and a second spline hub 24.

  The second friction member 22 has a pair of friction facings and a cushioning plate, and the inner periphery of the cushioning plate is fixed to the second connecting ring 23 via a rivet 25. The second connecting ring 23 has a plurality of teeth formed on the inner periphery. The second spline hub 24 has a hub 24a formed on the inner periphery, and a disk-shaped flange 24b extending from the outer peripheral surface of the hub 24a to the outer periphery. A spline is formed on the inner peripheral surface of the hub 24a, and the spline engages with the second input shaft S2. Further, as described above, the second flywheel 3 is rotatably supported on the outer peripheral surface of the hub 24a via the bearing 15. A cylindrical portion 24c extending toward the second flywheel 3 is formed on the outer peripheral portion of the flange 24b, and a plurality of teeth are formed on the outer peripheral surface of the cylindrical portion 24c. These teeth mesh with the teeth of the second connection ring 23.

[First and second pressing mechanisms 8, 9]
FIG. 2 shows the first and second pressing mechanisms 8 and 9 and the structures related to these mechanisms 8 and 9 extracted. The first and second pressing mechanisms 8 and 9 are arranged outside the second flywheel 3 (on the transmission side on the left side in FIG. 1).

<First pressing mechanism 8>
The first pressing mechanism 8 is a mechanism for pressing the first pressure plate 4 toward the first flywheel 2 and holding the first clutch 6 between the first pressure plate 4 and the first flywheel 2. is there. The first pressing mechanism 8 includes a first diaphragm spring 28, a support plate 29, and a push ring 30.

  The first diaphragm spring 28 includes a pressing portion 28a formed in an annular shape and a plurality of lever portions 28b formed extending from the pressing portion 28a toward the inner peripheral side.

  The support plate 29 is formed in an annular and disc shape, and is disposed further on the transmission side of the first diaphragm spring 28. An annular protrusion 29 a that protrudes toward the first diaphragm spring 28 is formed on the outer periphery of the support plate 29. The outer peripheral side surface of the first diaphragm spring 28 is supported by the protrusion 29a. In addition, a plurality of engaging portions 29 b formed by bending toward the first diaphragm spring 28 are provided on the inner peripheral portion of the support plate 29. The plurality of engaging portions 29 b are engaged with notches 28 c formed in the inner peripheral portion of the first diaphragm spring 28.

  The push ring 30 is formed in an annular and disk shape, and is disposed on the engine side of the first diaphragm spring 28. That is, the first diaphragm spring 28 is sandwiched between the push ring 30 and the support plate 29. An annular protrusion 30 a that protrudes toward the first diaphragm spring 28 is formed on the inner peripheral portion of the push ring 30. The side surface in the radial direction of the first diaphragm spring 28 is supported by the protrusion 30a.

  In addition, a plurality of pressing protrusions 30 a formed by bending toward the engine side are provided on the outer peripheral portion of the push ring 30. As shown in FIG. 3A, the pressing protrusion 30a is formed in a bifurcated shape. The tip of the pressing protrusion 30a extends substantially to the end surface on the engine side of the second protrusion 3c of the second flywheel 3. And the 2nd projection part 3c of the 2nd flywheel 3 is located in the recessed part of the protrusion 30a for a press.

  FIG. 3A is a cross-sectional view of the block portion 4a of the first pressure plate 4 viewed from the outside in the radial direction. FIG. 3B shows the positional relationship between the push ring 30, the second protrusion 3 c of the second flywheel 3, and a first wear tracking mechanism described later. It is visual.

  With the above configuration, when the push ring 30 moves to the engine side, the pressing protrusion 30a comes into contact with the first wear following mechanism 10 described later. Then, the first pressure plate 4 is moved to the engine side via the first wear tracking mechanism 10.

<Second pressing mechanism 9>
The second pressing mechanism 9 is a mechanism for pressing the second pressure plate 5 toward the second flywheel 3 and holding the second clutch 7 between the second pressure plate 5 and the second flywheel 3. is there. As shown in FIGS. 2 and 4, the second pressing mechanism 9 includes a second diaphragm spring 32, a pull ring 33, a plurality of lifting pins 34, and a connecting pin 35.

  4A is a cross-sectional view of the block portion 5a of the second pressure plate 5 viewed from the outside in the radial direction. FIG. 4B shows the positional relationship between the lifting pin 34, the second protrusion 2c of the first flywheel 2, and the second wear following mechanism 11 described later. FIG.

  The 2nd diaphragm spring 32 has the press part 32a formed cyclically | annularly, and the some lever part 32b formed extending from the press part 32a to the inner peripheral side. On the outer side surface of the second flywheel 3, an annular protrusion 3 d that protrudes toward the second diaphragm spring 32 is formed in the intermediate portion in the radial direction. A side surface of the second diaphragm spring 32 on the second flywheel side is supported by the protrusion 3d.

  The pull ring 33 is formed in an annular and disc shape, and is disposed on the transmission side of the second diaphragm spring 32. An annular protrusion 33 a that protrudes toward the second diaphragm spring 32 is formed on the inner peripheral portion of the pull ring 33. A side surface of the outer peripheral portion of the second diaphragm spring 32 is supported by the protrusion 33a.

  As shown in FIG. 4, two lifting pins 34 are provided in each of the three block portions 5 a provided in the second pressure plate 5.

  The two lifting pins 34 have the same configuration, and are arranged so as to extend in the axial direction at a predetermined interval in the circumferential direction. A large-diameter head 34a is formed at one end of the pull-up pin 34 on the engine side. The lifting pin 34 extends through the through hole 5b formed in the block portion 5a of the second flywheel 5 in the axial direction, further through the pull ring 33, and extends to the transmission side.

  The connecting pin 35 is disposed through the through hole 34b formed in the other end of the two lifting pins 34 in the circumferential direction. Further, a groove 33b having a semicircular cross section is formed on the surface of the pull ring 33 on the transmission side, and the connecting pin 35 is engaged with the groove 35b.

  With the configuration as described above, when the pull ring 33 moves to the transmission side, the two pulling pins 34 move to the transmission side via the connecting pins 35. As a result, the head 34 a of the pull-up pin 34 comes into contact with a second wear tracking mechanism 11 described later, and the second pressure plate 5 is moved to the transmission side via the second wear tracking mechanism 11.

  As shown in FIG. 2, a return spring 37 is provided between the push ring 30 and the pull ring 33 in the axial direction so as to urge them away from each other. The return spring 37 is formed by bending a plate as an elastic member into a U shape. One end of the return spring 37 is engaged through the pulling pin 34, and the other end is engaged with an inner peripheral surface of a bent portion formed on the outer peripheral portion of the push ring 30. The return spring 37 biases the push ring 30 toward the transmission side (in the direction away from the first pressure plate 4), and the pull ring 33 toward the engine side (in the direction away from the second pressure plate 5). For this reason, when the pressing force to each ring 30, 33 is released, each ring 30, 33 moves away from the corresponding pressure plate 4, 5.

[First and second wear following mechanisms 10, 11]
<First wear tracking mechanism 10>
The three first wear following mechanisms 10 are provided in the block portion 4 a of the first pressure plate 4. The first wear following mechanism 10 is configured so that the height of the adjustment bolt 39 that is the load pressure receiving point of the first pressure plate 4 (the amount of protrusion from the first pressure plate 4) regardless of the wear of the first friction member 17 of the first clutch 6. ) In the initial state. The first wear following mechanism 10 maintains the distance between the first pressure plate 4 and the first friction member 17 in the initial state regardless of the wear of the first friction member 17.

  In FIG. 3, the block part 4a of the first pressure plate 4, the first wear following mechanism 10 provided in the block part 4a, the push ring 30, the first protrusion 2b of the first flywheel 2, and the second The relationship with the 2nd protrusion 3c of the flywheel 3 is shown.

  In the block portion 4a of the first pressure plate 4, a screw hole 4b extending in the axial direction is formed on the transmission side, and a through hole 4c having a smaller diameter than the lower hole of the screw hole 4b is formed on the engine side. The screw hole 4b and the through hole 4c are formed coaxially. Further, the first protrusion 2b of the first flywheel 2 and the second protrusion 3c of the second flywheel 3 are arranged to face each other on the central axes of the screw hole 4b and the through hole 4c.

  The first wear tracking mechanism 10 includes an adjustment bolt (first adjustment member) 39, an adjustment spring (first drive member) 40, a first spring holder 41, a second spring holder 42, and a bush 43. doing. When the first pressure plate 4 is pressed toward the first flywheel 2 by the first and second spring holders 41 and 42 and the bush 43, the first friction member 17 comes into contact with the first flywheel 2. A first wear amount detection mechanism for detecting the wear amount of the first wear is configured.

  The adjusting bolt 39 is a cylindrical member, and a threaded portion 39a is formed on the outer peripheral surface. The threaded portion 39 a on the outer peripheral surface is screwed into the screw hole 4 b of the first pressure plate 4. Therefore, by rotating the adjustment bolt 39, the end surface 39b of the adjustment bolt 39 on the push ring 30 side moves in the axial direction. An annular projecting portion 39 c that projects inward is formed at the first end of the adjusting bolt 39 on the engine side. Further, the second end portion on the adjustment bolt 39 transmission side is formed with an abutting portion 39d extending to the outer peripheral side. The end surface 39b of the contact portion 39d is a portion that is pressed by the bifurcated pressing protrusion 30a of the push ring 30. A plurality of grooves 39e are formed in the inner peripheral portion of the contact portion 39d.

  The adjustment spring 40, a part of the first spring holder 41 and the second spring holder 42 are disposed on the inner peripheral portion of the adjustment bolt 39.

  FIG. 5 shows the adjustment spring 40, the first spring holder 41, and the second spring holder 42 extracted. Fig.5 (a) is a front view of the above member, FIG.5 (b) (c) is a side view of Fig.5 (a), respectively.

  The first spring holder 41 extends in the axial direction, and a first shaft portion 41a, a flange portion 41b, a spring support portion 41c, and a second shaft portion 41d are formed in this order from the engine side.

  As shown in FIG. 5, a projection 41e extending in the axial direction is formed on the outer peripheral surface of the first shaft portion 41a. The bush 43 is a spring pin having a slit extending in the axial direction. The bush 43 is attached to the outer periphery of the first shaft portion 41d so that the protrusion 41e of the first shaft portion 41d fits into the slit. And in this state, as shown in FIG. 3, it is inserted in the through-hole 4c of the block part 4a of the 1st pressure plate 4. As shown in FIG. The bush 43 is press-fitted into the through-hole 4c in a reduced diameter state. Therefore, if a predetermined force or more (repulsive force by the first flywheel 2) acts in the axial direction, the bush 43 moves in the axial direction. It does not move in the axial direction with a force smaller than the force.

  As shown in FIG. 3, the bush 43 has an engaging portion 43 a formed at the end portion on the transmission side so as to extend to the outer periphery. The engaging portion 43 a abuts on the flange portion 41 b of the first spring holder 41 and can engage with the annular projecting portion 39 c of the adjusting bolt 39.

  As shown in FIG. 5, the second spring holder 42 is formed in a cylindrical shape and is fitted into the second shaft portion 41 d of the first spring holder 41. A plurality of protrusions 42a projecting to the outer peripheral side are formed at the end of the second spring holder 42 on the transmission side, and the plurality of protrusions 42a are formed as 39e of the adjusting bolt 39 as shown in FIG. Engage with the groove. Therefore, the adjustment bolt 39 and the second spring holder 42 rotate in synchronization.

  The adjustment spring 40 is a torsion coil spring and is supported by the spring support portion 41 c of the first spring holder 41 and the second spring holder 42. One end 40 a of the adjustment spring 40 is engaged with a radial hole 41 f formed in the spring support portion 41 c, and the other end 40 b is engaged with a radial hole 42 b formed in the second spring holder 42. The adjustment spring 40 is supported by the first spring holder 41 and the second spring holder 42 in a twisted state. Therefore, the second spring holder 42 and the adjusting bolt 39 are always given a rotational force to the first spring holder 41 by the adjusting spring 40.

  As shown in FIGS. 5A and 5B, a groove 41g having a semicircular cross section is formed on the outer peripheral surface of the second shaft portion 41d of the first spring holder 41, and the inside of the second spring holder 42 is A similar groove 42c having a semicircular cross section is formed on the peripheral surface. These two grooves 41g and 42c form a groove having a circular cross section, and a set pin 45 for temporary assembly can be inserted into this groove. This is because when the adjustment spring 40 is attached to the first spring holder 41 and the second spring holder 42, the adjustment spring 40 is attached while being twisted by a predetermined angle, and these sub-assemblies are attached to the apparatus until This is a configuration for maintaining the state.

<Second wear tracking mechanism 11>
The three second wear following mechanisms 11 are provided in a block portion 5 a formed on the outer periphery of the second pressure plate 5. The second wear follow-up mechanism 11 is configured so that the height of the adjustment bolt 39 that is the load pressure receiving point of the second pressure plate 5 (the amount of protrusion from the second pressure plate 5) regardless of the wear of the second friction member 22 of the second clutch 7. ) In the initial state. The second wear tracking mechanism 11 maintains the distance between the second pressure plate 5 and the second friction member 22 in the initial state regardless of the wear of the second friction member 22.

  As shown in FIG. 4, the block portion 5a of the second pressure plate 5 is formed with a screw hole 5c extending in the axial direction on the engine side, and further has a through hole 5d having a smaller diameter than the lower hole of the screw hole 5c on the transmission side. Is formed. The screw hole 5c and the through hole 5d are formed coaxially. In addition, the second protrusion 2c of the first flywheel 2 and the first protrusion 3b of the second flywheel 3 are arranged to face each other at the portions where the center lines of the screw hole 5c and the through hole 5d are extended.

  The basic structure of the second wear tracking mechanism 11 is the same as that of the first wear tracking mechanism 10, and an adjustment bolt 39, an adjustment spring 40, a first spring holder 41, a second spring holder 42, and a bush 43 And have.

  The configuration of each component is the same as the configuration of the first wear tracking mechanism 10, and only the relationship with the pressing mechanism is different. Specifically, in the first wear tracking mechanism 10, the push ring 30 presses the end face of the adjustment bolt 39 toward the first flywheel 2 and presses the first pressure plate 4 toward the first flywheel 2. On the other hand, in the second wear tracking mechanism 11, the pulling pin 33 moves the lifting pin 34 toward the second flywheel 5, and the second pressure plate 5 is moved to the second flywheel via the adjust ring 39 that contacts the lifting pin 34. Pressed against side 3.

[Basic operation of twin clutch device 1]
In a state where the pressing mechanisms 8 and 9 are not operated, the first pressure plate 4 is not pressed against the first flywheel 2 side, and the second pressure plate 5 is not pressed against the second flywheel 3 side. Accordingly, the pressure plates 4 and 5 are kept separated from the corresponding flywheels 2 and 3 by the strap plates. In this case, when power is input from the engine to the first and second flywheels 2 and 3, the first and second flywheels 2 and 3, the first and second pressure plates 4 and 5, and the first And the 2nd press mechanisms 8 and 9 rotate integrally.

  For example, when the vehicle starts at the first speed, the first input shaft S1 side of the transmission is switched to the first speed, and the inner peripheral end of the first diaphragm spring 28 of the first pressing mechanism 8 is a first actuator (not shown). Is pushed to the engine side. As a result, the first diaphragm spring 28 is elastically deformed with the protrusion 29a of the support plate 29 as a fulcrum, and the push ring 30 is pushed to the engine side. The push protrusion 30a of the push ring 30 abuts on the end surface 39b of the adjust ring 39 of the first wear tracking mechanism 10, and when the push ring 30 is pushed to the engine side, the first pressure plate 4 is moved to the engine via the adjust string 39. Pushed to the side. As a result, the first friction member 17 of the first clutch 6 is sandwiched between the first pressure plate 4 and the first flywheel 2, and power is transmitted to the first input shaft S <b> 1 via the first clutch 6. . By these operations, the vehicle starts to start at the first speed.

  At the time of shifting from the first speed to the second speed, the second input shaft S2 side of the transmission is switched to the second speed. When the transmission is in the second speed state, the second clutch 7 is switched to the connected state almost simultaneously with the release of the connection of the first clutch 6.

  Specifically, when the pressing load applied to the first pressing mechanism 8 is released, the push ring 30 returns to the transmission side by the urging force of the return spring 37. As a result, the posture of the first diaphragm spring 28 returns to the state shown in FIG. 1, and the power transmission via the first clutch 6 is released.

  On the other hand, the inner peripheral end of the second diaphragm spring 32 of the second pressing mechanism 9 is pressed to the engine side by a second actuator (not shown). As a result, the second diaphragm spring 32 is elastically deformed with the protrusion 3a of the second flywheel 3 as a fulcrum, and the pull ring 33 is pulled toward the transmission side. Thereby, the connecting pin 35 and the lifting pin 34 move to the transmission side. Then, the head 34 a of the lifting pin 34 comes into contact with the end face 39 b of the adjustment bolt 39 of the second wear following mechanism 11, and eventually the second pressure plate 5 moves to the transmission side via the adjustment bolt 39. Therefore, the second friction member 22 of the second clutch 7 is sandwiched between the second pressure plate 5 and the second flywheel 3, and power is transmitted to the second input shaft S <b> 2 via the second clutch 7. . With the above operation, the gear position is switched from the first speed to the second speed.

[Operation of First Wear Following Mechanism 10]
In a state in which the first clutch 6 is not connected, the end surface of the second shaft portion 41d of the first spring holder 41 of the first wear following mechanism 10 is located on the second flywheel 3 as shown in FIG. It is in contact with the second protrusion 3c. At this time, a clearance is formed between the push ring 30 and the adjusting bolt 39, and further, the first clutch 6 (first pressure) is provided between the end surface of the bush 43 and the first protrusion 2b of the first flywheel 2. A clearance corresponding to the cutting allowance of the plate 4) is formed. As described above, in FIG. 6A, the axial distance L between the first protrusion 2b of the first flywheel 2 and the second protrusion 3c of the second flywheel 3 is always constant.

  Next, when the first clutch 6 is engaged, as shown in FIG. 6B, when the first pressure plate 4 is pushed to the engine side by the first pressing mechanism 8, the end face of the bush 43 becomes the first flywheel. 2 abuts on the first projection 2b. At this time, when the first friction member 17 is worn, after the bush 43 comes into contact with the first protrusion 2b of the first flywheel 2, the first pressure plate 4 is further moved to the engine side by the first pressing mechanism 8. Pushed in. At this time, the sliding resistance generated between the bush 43 and the first pressure plate 4 (block portion 4a) is significantly smaller than the pressing load applied from the first pressing mechanism 8 to the first pressure plate 4. 43 slides with the first pressure plate 4, and the first pressure plate 4 moves to the engine side with respect to the bush 43. Then, when the first friction member 17 is completely sandwiched between the first pressure plate 4 and the first flywheel 2, the movement of the first pressure plate 4 stops. In this state, the engagement between the annular protrusion 39c of the adjusting bolt 39 and the bush 43 depends on the amount of wear of the first friction member 17, that is, the amount of movement of the bush 43 relative to the first pressure plate 4. A gap (clearance for wear) occurs between the portion 43a.

  Further, when the application of the pressing load by the first pressing mechanism 8 is released to release the connection of the first clutch 6, the first pressure plate 4 moves to the transmission side by the load of the strap plate. However, when the second shaft portion 41d of the first spring holder 41 contacts the second protrusion 3c of the second flywheel 3, the movement of the first pressure plate 4 toward the transmission side stops. Thereafter, the push ring 30 is further moved to the transmission side by the urging force of the return spring 37, so that the push ring 30 and the adjustment bolt 39 are separated, and the pressing load of the push ring 30 against the adjustment bolt 39 becomes "0". At this time, since the first diaphragm spring 28 hits the support plate 29 and stops, the posture of the first diaphragm spring 28 is always constant.

  In the state as described above, the adjusting bolt 39 is always subjected to the rotational force of the adjusting spring 40. Therefore, the adjusting bolt 39 is adjusted until there is no gap between the annular projecting portion 39c of the adjusting bolt 39 and the engaging portion 43a of the bush 43. 39 rotates. Therefore, the clearance between the adjustment bolt 39 and the push ring 30 and the clutch allowance are the same as the initial clearance and the allowance despite the wear of the first friction member 17.

  The rotational force of the adjustment spring 39 is set to be much smaller than the sliding resistance generated between the bush 43 and the first pressure plate 4, so that the bush 43 does not slip.

  As described above, the bush 43 and the adjustment bolt 39 move toward the transmission side with respect to the first pressure plate 4 in accordance with the wear of the first friction member 17. For this reason, the stroke of the 1st press mechanism 8 until the 1st clutch 6 is connected becomes the same as the initial state in which the 1st friction member 17 is not worn. Such an operation is repeated when the first clutch 6 is released.

  As described above, the first wear tracking mechanism 10 can make the height of the adjustment bolt 39 that is the load pressure receiving point of the first pressure plate 4 constant regardless of the wear amount of the first friction member 17. Therefore, fluctuations in the performance of the clutch device due to wear of the first friction member 17 can be suppressed.

[Operation of Second Wear Following Mechanism 11]
The operation of the second wear tracking mechanism 11 is different from that of the first wear tracking mechanism 10 in that the mechanism for pressing the adjustment bolt 39 includes a pull ring 33, a connecting pin 35, and a lifting pin 34. However, other operations are the same as those of the first wear tracking mechanism 10.

[Feature]
(1) Since each wear follow-up mechanism 10, 11 is provided on the corresponding pressure plate 4, 5, it is configured by a member fixed to the flywheel or a member attached to the pressure plate as in the conventional device. Compared to the case, the assemblability is improved.

  (2) The adjustment spring 40 is supported by the first and second spring holders 41 and 42, and both ends of the adjustment spring 40 are engaged and fixed to the first and second spring holders 41 and 42, respectively. . For this reason, compared with the structure which forms a slit in an adjustment bolt like the conventional apparatus, the strength fall of a member can be suppressed.

  (3) The first and second spring holders with the adjustment springs 40 assembled to the first and second spring holders 41 and 42 on the outer peripheral surface of the first spring holder 41 and the inner peripheral surface of the second spring holder 42. A groove into which a temporary assembly set pin 45 for prohibiting relative rotation of 41 and 42 can be inserted is formed. For this reason, the wear tracking mechanism can be in the sub-assembled state and can be assembled to the apparatus, and the assemblability is further facilitated.

  (4) Since return springs 37 for pulling the push ring 30 and the pull ring 33 away from the corresponding pressure plates 4 and 5 are provided, after the movement of the pressure plates 4 and 5 stops, Acting reliably can be zero.

  (5) Since the posture of each of the diaphragm springs 28 and 32 is kept constant and the height of the adjusting bolt 39 that is the load pressure receiving point of each pressure plate 4 and 5 can be kept constant at all times, the clutch engagement characteristics are initially set. Can be maintained in a state.

[Other Embodiments]
The present invention is not limited to the above-described embodiments, and various changes or modifications can be made without departing from the scope of the present invention.

  In the above embodiment, the wear tracking mechanism is provided in both the first and second clutches 6 and 7, but the wear tracking mechanism may be provided in only one of them.

DESCRIPTION OF SYMBOLS 1 Twin clutch apparatus 2 1st flywheel 3 2nd flywheel 4 1st pressure plate 4a Block part 5 2nd pressure plate 5a Block part 6 1st clutch disk assembly 7 2nd clutch disk assembly 8 1st press mechanism 9 The second pressing mechanism 10, the first wear tracking mechanism 11, the second wear tracking mechanism 17, the first friction member 22, the second friction member 30, and the push ring 30.
33 Pull ring 37 Return spring 39 Adjustment bolt (adjustment member)
40 Adjustment spring (drive member)
41 First spring holder 42 Second spring holder 43 Bush 43
45 Set pins for temporary assembly

Claims (10)

A twin clutch device for transmitting power from an engine to a first input shaft and a second input shaft of a transmission,
A first flywheel and a second flywheel each receiving power from the engine;
A first pressure plate provided integrally rotatable with the first flywheel and movable in the axial direction;
A second pressure plate provided integrally rotatable with the second flywheel and movable in the axial direction;
A first clutch disk assembly having a first friction member and disposed between the first flywheel and the first pressure plate and connectable to the first input shaft;
A second clutch disk assembly having a second friction member, disposed between the second flywheel and the second pressure plate, and connected to the second input shaft;
A first pressing mechanism for pressing the first pressure plate toward the first flywheel;
A second pressing mechanism for pressing the second pressure plate toward the second flywheel;
A first wear follower mechanism provided on the first pressure plate for maintaining the distance between the first pressure plate and the first friction member in an initial state regardless of wear of the first friction member;
With
The first wear tracking mechanism includes:
A first adjusting member that is supported so as to be movable in the axial direction relative to the first pressure plate, and that moves the first pressure plate toward the first flywheel by receiving a pressing force of the first pressing mechanism; ,
The first friction plate is supported by the first pressure plate so as to be movable in the axial direction, and abuts against the first flywheel when the first pressure plate is pressed toward the first flywheel. A first wear amount detection mechanism for detecting a wear amount of the member;
A first drive member that moves the first adjustment member toward the pressing mechanism by the amount of wear detected by the first wear amount detecting mechanism when the pressing force of the first pressing mechanism is released;
I have a,
The first wear amount detection mechanism is supported by the first pressure plate so as to be movable in the axial direction with respect to the first pressure plate in accordance with wear of the first friction member, and Restricting the movement of the first pressure plate by contacting the second flywheel when the pressing force is released;
Twin clutch device. The first adjusting member is screwed into the first pressure plate;
The first drive member is a torsion coil spring that applies a rotational force to the first adjustment member.
The twin clutch device according to claim 1 . A twin clutch device for transmitting power from an engine to a first input shaft and a second input shaft of a transmission,
A first flywheel and a second flywheel each receiving power from the engine;
A first pressure plate provided integrally rotatable with the first flywheel and movable in the axial direction;
A second pressure plate provided integrally rotatable with the second flywheel and movable in the axial direction;
A first clutch disk assembly having a first friction member and disposed between the first flywheel and the first pressure plate and connectable to the first input shaft;
A second clutch disk assembly having a second friction member, disposed between the second flywheel and the second pressure plate, and connected to the second input shaft;
A first pressing mechanism for pressing the first pressure plate toward the first flywheel;
A second pressing mechanism for pressing the second pressure plate toward the second flywheel;
A first wear follower mechanism provided on the first pressure plate for maintaining the distance between the first pressure plate and the first friction member in an initial state regardless of wear of the first friction member;
With
The first wear tracking mechanism includes:
A first adjusting member that is supported so as to be movable in the axial direction relative to the first pressure plate, and that moves the first pressure plate toward the first flywheel by receiving a pressing force of the first pressing mechanism; ,
The first friction plate is supported by the first pressure plate so as to be movable in the axial direction, and abuts against the first flywheel when the first pressure plate is pressed toward the first flywheel. A first wear amount detection mechanism for detecting a wear amount of the member;
A first drive member that moves the first adjustment member toward the pressing mechanism by the amount of wear detected by the first wear amount detecting mechanism when the pressing force of the first pressing mechanism is released;
Have
The first adjusting member is screwed into the first pressure plate;
The first drive member is a torsion coil spring that applies a rotational force to the first adjustment member;
The first pressure plate has a plurality of block portions arranged at predetermined intervals in the circumferential direction on an outer peripheral portion, and through holes extending in the axial direction are formed in the block portion,
The first friction amount detection mechanism is provided in each of the plurality of block portions,
A first spring holder disposed in the through hole so as to be axially movable;
The first spring holder is fitted to the outer periphery on one end side so as not to be relatively rotatable, and is press-fitted into the through hole of the block portion, and slides with the first spring holder with respect to the through hole with a predetermined pressing force or more. A movable bush,
A second spring holder fitted to the outer periphery of the other end of the first spring holder;
Have
The torsion coil spring is disposed on an outer periphery of at least a part of the first spring holder and an outer periphery of the second spring holder, and one end of the torsion coil spring is engaged with a radial hole formed in the first spring holder. combined, and the other end that are engaged with the second radial bore formed in the spring holder,
Tsu-in clutch device. The first adjustment member is formed in a cylindrical shape, and at least a part of the first spring holder, the second spring holder, and the torsion coil spring are accommodated in the first adjustment member. The twin clutch device according to claim 3 . The twin clutch device according to claim 4 , wherein the first adjustment member and the second spring holder are engaged with each other so as not to be relatively rotatable. The first and second spring holders rotate relative to each other on the outer peripheral surface of the first spring holder and the inner peripheral surface of the second spring holder in a state where the torsion coil spring is assembled to the first and second spring holders. The twin clutch device according to claim 5 , wherein a groove into which a temporary assembly set pin for prohibiting the insertion is inserted is formed. A twin clutch device for transmitting power from an engine to a first input shaft and a second input shaft of a transmission,
A first flywheel and a second flywheel each receiving power from the engine;
A first pressure plate provided integrally rotatable with the first flywheel and movable in the axial direction;
A second pressure plate provided integrally rotatable with the second flywheel and movable in the axial direction;
A first clutch disk assembly having a first friction member and disposed between the first flywheel and the first pressure plate and connectable to the first input shaft;
A second clutch disk assembly having a second friction member, disposed between the second flywheel and the second pressure plate, and connected to the second input shaft;
A first pressing mechanism for pressing the first pressure plate toward the first flywheel;
A second pressing mechanism for pressing the second pressure plate toward the second flywheel;
A first wear follower mechanism provided on the first pressure plate for maintaining the distance between the first pressure plate and the first friction member in an initial state regardless of wear of the first friction member;
With
The first wear tracking mechanism includes:
A first adjusting member that is supported so as to be movable in the axial direction relative to the first pressure plate, and that moves the first pressure plate toward the first flywheel by receiving a pressing force of the first pressing mechanism; ,
The first friction plate is supported by the first pressure plate so as to be movable in the axial direction, and abuts against the first flywheel when the first pressure plate is pressed toward the first flywheel. A first wear amount detection mechanism for detecting a wear amount of the member;
A first drive member that moves the first adjustment member toward the pressing mechanism by the amount of wear detected by the first wear amount detecting mechanism when the pressing force of the first pressing mechanism is released;
Have
The first pressing mechanism has a first pressing member for pressing the first pressure plate toward the first flywheel,
The second pressing mechanism has a second pressing member that presses the second pressure plate toward the second flywheel,
Arranged between the first pressing member and the second pressing member, the first pressing member is separated from the first pressure plate, and the second pressing member is biased in a direction away from the second pressure plate. A return spring ,
Tsu-in clutch device. The second pressure plate is provided on the second pressure plate, and maintains a distance between the second pressure plate and the second friction member in an initial state regardless of wear of the second friction member of the second clutch disk assembly. A second wear tracking mechanism;
The second wear tracking mechanism is
A second adjusting member that is supported so as to be movable in the axial direction with respect to the second pressure plate, and that moves the second pressure plate toward the second flywheel by receiving the pressing force of the second pressing mechanism; ,
The second friction plate is supported by the second pressure plate so as to be movable in the axial direction, and abuts against the second flywheel when the second pressure plate is pressed toward the second flywheel. A second wear amount detecting member for detecting a wear amount of the member;
A second drive member that moves the second adjustment member toward the second pressing mechanism by the amount of wear detected by the second wear amount detecting member when the pressing force of the second pressing mechanism is released;
have,
The twin clutch device according to any one of claims 1 to 7 . The second wear amount detection mechanism is supported by the second pressure plate so as to be movable in the axial direction with respect to the second pressure plate in accordance with wear of the second friction member. The twin clutch device according to claim 8 , wherein movement of the second pressure plate is restricted when the pressing force is released. It said second wear-amount detecting mechanism, when the pressing force of the second pressing mechanism is released, to restrict movement of the second pressure plate by abutting on the first flywheel, according to claim 9 Twin clutch device.

Images