JP5555748B2 - Torque converter lockup device - Google Patents

Torque converter lockup device Download PDF

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Publication number
JP5555748B2
JP5555748B2 JP2012201298A JP2012201298A JP5555748B2 JP 5555748 B2 JP5555748 B2 JP 5555748B2 JP 2012201298 A JP2012201298 A JP 2012201298A JP 2012201298 A JP2012201298 A JP 2012201298A JP 5555748 B2 JP5555748 B2 JP 5555748B2
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plate
plurality
portion
elastic members
torque
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JP2014055643A (en
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広幸 牛尾
裕樹 河原
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株式会社エクセディ
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H45/00Combinations of fluid gearings for conveying rotary motion with couplings or clutches
    • F16H45/02Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/12Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
    • F16F15/121Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
    • F16F15/123Wound springs
    • F16F15/12353Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations
    • F16F15/1236Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations resulting in a staged spring characteristic, e.g. with multiple intermediate plates
    • F16F15/12366Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations resulting in a staged spring characteristic, e.g. with multiple intermediate plates acting on multiple sets of springs
    • F16F15/12373Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations resulting in a staged spring characteristic, e.g. with multiple intermediate plates acting on multiple sets of springs the sets of springs being arranged at substantially the same radius
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H45/00Combinations of fluid gearings for conveying rotary motion with couplings or clutches
    • F16H45/02Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type
    • F16H2045/0205Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type two chamber system, i.e. without a separated, closed chamber specially adapted for actuating a lock-up clutch
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H45/00Combinations of fluid gearings for conveying rotary motion with couplings or clutches
    • F16H45/02Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type
    • F16H2045/0221Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type with damping means
    • F16H2045/0226Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type with damping means comprising two or more vibration dampers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H45/00Combinations of fluid gearings for conveying rotary motion with couplings or clutches
    • F16H45/02Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type
    • F16H2045/0273Combinations of fluid gearings for conveying rotary motion with couplings or clutches with mechanical clutches for bridging a fluid gearing of the hydrokinetic type characterised by the type of the friction surface of the lock-up clutch
    • F16H2045/0294Single disk type lock-up clutch, i.e. using a single disc engaged between friction members

Description

  The present invention relates to a lockup device, in particular, a torque converter lock for mechanically transmitting torque from a front cover to a turbine, which is disposed between a front cover connected to a member on an engine side and a turbine of the torque converter. It relates to an up device.

  As shown in Patent Document 1 or Patent Document 2, the torque converter is often provided with a lockup device for transmitting torque directly from the front cover to the turbine. The lock-up devices disclosed in these patent documents include a piston that can be frictionally connected to the front cover, a retaining plate that is fixed to the piston, and a plurality of torsion springs provided on the outer peripheral side and the inner peripheral side in the radial direction. And a driven plate for transmitting torque transmitted through the plurality of torsion springs to the turbine.

  In such a lock-up device, in order to improve the vibration absorption performance, it is necessary to realize a low rigidity and a wide torsion angle of the torsion spring.

  Therefore, as shown in Patent Document 3, a configuration is provided in which a pair of torsion springs are operated in series by an intermediate plate. Specifically, the lockup device of Patent Document 3 includes one drive plate, two driven plates, and one intermediate plate. The drive plate has an outer peripheral portion connected to the piston. The two drive plates are connected to each other and fixed to the turbine hub. The intermediate plate is disposed between the two driven plates and is rotatable relative to the drive plate and the drive plate.

JP 2011-122640 A JP 2009-250288 A JP 2006-118534 A

  A conventional lock-up device as shown in Patent Document 3 has one drive plate, two driven plates, and one intermediate plate. That is, in order to realize a wide twist angle in the conventional lockup device, at least four plate members are required. For this reason, in the conventional apparatus, the number of parts is increased, resulting in an increase in cost and hindering shortening of the axial space.

  SUMMARY OF THE INVENTION An object of the present invention is to reduce the number of parts constituting the device and reduce the axial length of the entire torque converter in a lock-up device that realizes a large twist angle.

  A torque converter lockup device according to a first aspect of the present invention is disposed between a front cover coupled to an engine-side member and a turbine of the torque converter, and mechanically transmits torque from the front cover to the turbine. It is a device for doing. This device has a piston that is movable in the axial direction and transmits or cuts off torque from the front cover, one first plate to which torque is input from the clutch portion, and relative rotation with the first plate. One second plate that is freely arranged and connected to the turbine, a plurality of elastic members that elastically connect the first plate and the second plate in the rotation direction, and an intermediate member are provided. The intermediate member is a member for allowing at least two of the plurality of elastic members to act in series between the first plate and the second plate so as to be rotatable relative to both plates between the first plate and the second plate.

  The first plate has a plurality of first storage portions that are formed so as to protrude to one side in the axial direction and store a plurality of elastic members, and an end surface in the rotation direction of the first storage portion is an end surface in the rotation direction of the elastic member. Abutment is possible. The second plate has a plurality of second storage portions that are formed to protrude to the other side in the axial direction and store a plurality of elastic members together with the first storage portion, and an end surface in the rotational direction of the second storage portion is elastic. It can contact | abut to the end surface of the rotation direction of a member.

  In this device, torque input from the front cover is input to the first plate via a clutch portion having a piston, transmitted from the first plate to the plurality of elastic members and the second plate, and further from the second plate to the turbine. Is output. At least two of the plurality of elastic members act in series by the intermediate member, and a wide twist angle is realized.

Here, an input side plate and an output side plate are each constituted by one plate, and an intermediate member is disposed between these plates. Therefore, as compared with the case of constituting the lowest four plates as in the conventional apparatus, the apparatus of the present invention can reduce the number of components, also may be shortened axial length.

Also, here, a plurality of elastic members are housed in the second housing portion of the first housing portion and the second plate of the first plate. And the end surface of the rotation direction of each accommodating part contacts the end surface of an elastic member, and torque is transmitted between each plate and an elastic member.

A torque converter lockup device according to a second aspect of the present invention is disposed between a front cover coupled to an engine side member and a turbine of the torque converter, and mechanically transmits torque from the front cover to the turbine. It is a device for doing. This device has a piston that is movable in the axial direction and transmits or cuts off torque from the front cover, one first plate to which torque is input from the clutch portion, and relative rotation with the first plate. A second plate that is freely arranged and connected to the turbine, a plurality of elastic members that elastically connect the first plate and the second plate in the rotational direction, an intermediate member, and a stopper mechanism; ing. The intermediate member is a member for allowing at least two of the plurality of elastic members to act in series between the first plate and the second plate so as to be rotatable relative to both plates between the first plate and the second plate. Stopper mechanism is configured to position the first and second plates in the axial direction, restricting the relative angular range of the plates.

  Here, the axial positions of the first plate and the second plate are determined by the stopper mechanism. Moreover, the relative angle range of both plates is regulated by this stopper mechanism.

The lockup device for a torque converter according to the third aspect of the present invention is the second aspect of the device, wherein the stopper mechanism has a plurality of slits and a plurality of protrusions. The plurality of slits are formed in the first plate, penetrate in the axial direction, and are long in the rotational direction. The plurality of protrusions are formed by bending a part of the second plate toward the first plate, and are respectively inserted into the plurality of holes of the first plate.

  Here, the relative angle range between the first plate and the second plate can be regulated with a simple configuration.

The lock-up device for a torque converter according to the fourth aspect of the present invention is the third aspect of the device according to the third aspect, wherein the plurality of protrusions extend through the plurality of slits and have grooves on the inner peripheral surface. The stopper mechanism further includes a snap ring that is mounted in the grooves of the plurality of protrusions and can abut on the side surface of the second plate opposite to the first plate.

  Here, the axial positioning of the first plate can be performed by attaching a snap ring to the groove formed in the protrusion of the second plate.

A torque converter lockup device according to a fifth aspect of the present invention is disposed between a front cover coupled to a member on an engine side and a turbine of the torque converter, and mechanically transmits torque from the front cover to the turbine. It is a device for doing. This device has a piston that is movable in the axial direction and transmits or cuts off torque from the front cover, one first plate to which torque is input from the clutch portion, and relative rotation with the first plate. One second plate freely arranged and connected to the turbine, a plurality of elastic members elastically connecting the first plate and the second plate in the rotational direction, an intermediate member, and an input fixed to the piston A plate and a plurality of outer peripheral side elastic members are provided. The intermediate member is a member for allowing at least two of the plurality of elastic members to act in series between the first plate and the second plate so as to be rotatable relative to both plates between the first plate and the second plate. A plurality of outer peripheral side elastic member is disposed on the outer peripheral side of the plurality of elastic members, for elastically connecting in the rotational direction and an outer peripheral portion of the input plate and the first plate.

  Here, since a plurality of elastic members are provided on the inner peripheral side and the outer peripheral side, it is easy to make the torsional characteristics multistage.

A lockup device for a torque converter according to a sixth aspect of the present invention is the fifth aspect of the device according to the fifth aspect, wherein the lockup device is disposed so as to be rotatable relative to the input plate and the first plate. A support member is further provided for supporting the side and causing at least two outer peripheral elastic members of the plurality of outer peripheral elastic members to act in series.

  Here, the support member can cause at least two outer peripheral elastic members to act in series, and a wide twist angle can be achieved. Further, the movement of the outer peripheral elastic member can be restricted by the support member.

A torque converter lockup device according to a seventh aspect of the present invention is disposed between a front cover coupled to a member on an engine side and a turbine of the torque converter, and mechanically transmits torque from the front cover to the turbine. It is a device for doing. This device has a piston that is movable in the axial direction and transmits or cuts off torque from the front cover, one first plate to which torque is input from the clutch portion, and relative rotation with the first plate. One second plate freely arranged and connected to the turbine, a plurality of elastic members elastically connecting the first plate and the second plate in the rotational direction, an intermediate member, and an input fixed to the piston A plate and a plurality of outer peripheral side elastic members are provided. The intermediate member is a member for allowing at least two of the plurality of elastic members to act in series between the first plate and the second plate so as to be rotatable relative to both plates between the first plate and the second plate. The first plate has an outer peripheral portion engaged with the piston so as to be movable in the axial direction but not relatively rotatable.

  Here, torque is directly input from the piston to the first plate. Therefore, the number of parts is reduced.

The lock-up device for a torque converter according to the eighth aspect of the present invention is the seventh aspect of the device, wherein the second plate is supported so as to be relatively rotatable with respect to the first plate within a predetermined angle range and non-movable in the axial direction. And a plurality of fastening members. The first plate has a plurality of arc-shaped elongated holes extending in the circumferential direction. The plurality of fastening members include a circular barrel passing through the long hole, a head having a diameter larger than that of the barrel and contacting a side surface opposite to the second plate of the first plate, and a second plate And a caulking portion that is caulked on a side surface opposite to the first plate.

  Here, the fastening member has a circular body portion, a head portion, and a caulking portion. The circular body portion passes through the arc-shaped long hole of the first plate, and the caulking portion is caulked by the second plate. For this reason, the second plate can rotate relative to the first plate by a gap generated between the circular body and the long hole. The first plate and the second plate are connected to each other so as not to move in the axial direction by a head portion and a caulking portion.

  As described above, according to the present invention, the number of parts constituting the lockup device can be reduced, and further, the axial length of the entire torque converter can be reduced.

The cross-sectional block diagram of the lockup apparatus by 1st Embodiment of this invention. FIG. Sectional drawing of a retaining plate. The front partial view of a retaining plate. The cross-sectional block diagram which shows the subassembly of an inner peripheral side damper mechanism. FIG. 4B is a partial front view of FIG. 4A. The front fragmentary view of a clutch plate. The front view of an intermediate | middle plate. The cross-sectional block diagram of the lockup apparatus by 2nd Embodiment of this invention. The block diagram of a rivet.

-First embodiment-
FIG. 1 shows a lockup device 1 for a torque converter according to a first embodiment of the present invention. Here, as for the configuration of the torque converter, only the front cover 2 and the turbine hub 3 which is a part of the turbine are shown, and other configurations are omitted. An engine is arranged on the left side of FIG. 1, and a torque converter and a transmission are arranged on the right side of FIG. OO shown in FIG. 1 is a rotating shaft of the torque converter and lockup device 1.

[Front cover 2 and turbine hub 3]
The front cover 2 is a member to which torque is input via a member such as a flexible plate (not shown). The front cover 2 includes a disc portion 2a and a cylindrical portion 2b extending from the outer peripheral edge of the disc portion 2a toward the transmission side. A friction surface 2c is formed on the outer peripheral portion of the side surface of the disc portion 2a on the transmission side. A plurality of nuts 5 are fixed to the outer peripheral portion of the side surface on the engine side of the disc portion 2a by welding. A member such as a flexible plate (not shown) is mounted by a bolt (not shown) that is screwed onto the nut 5. Moreover, the impeller shell 6 of the impeller which comprises a torque converter is being fixed to the edge part by the side of the transmission of the cylindrical part 2b by welding.

  The turbine hub 3 is provided on the inner periphery of the turbine. The turbine hub 3 has a cylindrical portion 3a extending in the axial direction and a flange portion 3b extending from the cylindrical portion 3a toward the outer periphery. The inner peripheral portion of the turbine shell is fixed to the flange portion 3 b of the turbine hub 3 by a plurality of rivets 7. In addition, a spline hole 3c that engages with the input shaft of the transmission is formed in the inner peripheral portion of the cylindrical portion 3a of the turbine hub 3.

[Lock-up device 1]
The lockup device 1 is disposed in a space between the turbine and the front cover 2 and is a mechanism for mechanically connecting the two as required.

  The lockup device 1 mainly includes a piston 10, a retaining plate (input plate) 11, six outer peripheral side torsion springs 12, and a support member 13. Furthermore, the lockup device 1 has one clutch plate (first plate) 15, one side plate (output plate) 16, six inner peripheral side torsion springs 17, and an intermediate plate 18. doing.

  Here, the outer periphery of the retaining plate 11, the outer peripheral torsion spring 12, the support member 13, and the outer peripheral portion of the clutch plate 15 constitute an outer peripheral damper mechanism. The clutch plate 15, the side plate 16, the inner peripheral side torsion spring 17, and the intermediate plate 18 constitute an inner peripheral side damper mechanism.

<Piston 10>
As shown in FIG. 2, the piston 10 has an annular disc portion 10 a and a cylindrical portion 10 b. The cylindrical portion 10b is formed to project from the inner peripheral end of the disc portion 10a to the transmission side, and is supported on the outer peripheral surface of the cylindrical portion 3a of the turbine hub 3 so as to be slidable in the axial direction and the rotational direction. ing. An annular friction member 20 is fixed to the outer peripheral portion of the disc portion 10 a of the piston 10.

<Outer side damper mechanism>
The retaining plate 11 is disposed on the transmission side of the piston 10. As shown in FIGS. 1, 3A, and 3B, the retaining plate 11 includes an annular disk portion 11a, three engagement portions 11b, and a spring support portion 11c. The inner periphery of the annular disc portion 11a is fixed to the piston 10 by a rivet 21 (see FIG. 1). The engaging portion 11b is formed to protrude further to the outer peripheral side at the outer peripheral end of the disc portion 11a, and the outer peripheral end is bent to the transmission side. The spring support portion 11c is formed to be bent toward the transmission side between the circumferential directions of the three engagement portions 11b.

  The outer peripheral side torsion spring 12 is disposed on the outer peripheral side of the spring support portion 11 c of the retaining plate 11. A set of two outer peripheral side torsion springs 12 is disposed between the two engaging portions 11 b of the retaining plate 11.

  As shown in FIG. 1, the support member 13 is disposed between the piston 10 and the outer peripheral side torsion spring 12 in the axial direction, and is rotatable relative to the retaining plate 11 and the clutch plate 15. The support member 13 supports the side portion and the outer peripheral portion of the outer peripheral side torsion spring 12 on the piston 10 side, and engages between a pair of outer peripheral side torsion springs 12 (FIG. 1). See). Such a support member 13 causes a set of two outer peripheral side torsion springs 12 to act in series.

<Inner damper mechanism>
A subassembly of the inner damper mechanism is shown in FIGS. 4A and 4B. In addition, in FIG. 4B, illustration of the inner peripheral side torsion spring 17 is omitted.

  As shown in FIGS. 4A, 4B, and 5, the clutch plate 15 includes an annular disk portion 15a, three engagement portions 15b, and three first spring storage portions 15c. Yes. FIG. 5 is a partial front view of the clutch plate 15.

  The engaging portions 15b are formed on the outer peripheral portion of the disc portion 15a so as to protrude further to the outer peripheral side, and are arranged at equiangular intervals in the circumferential direction. Each engaging portion 15b has a U-shaped cross section, and is in contact with the end face of a set of two outer peripheral side torsion springs 12.

  The first spring storage portion 15c is a portion that stores and holds the inner peripheral side torsion spring 17, and a set of two inner peripheral side torsion springs 17 is stored in each first spring storage portion 15c. Further, both ends in the circumferential direction of the first spring storage portion 15c can come into contact with the end surface of the inner peripheral side torsion spring 17 stored inside.

  In the disk portion 15a, as is apparent from FIG. 5, three arc-shaped slits 15d having a predetermined length extending in the circumferential direction are formed on the outer peripheral side of the first storage portion 15c. Further, in the disk portion 15a, two pairs of anti-rotation projections 15e are formed on the inner peripheral side of one engagement portion 15b at substantially the same radial position as the slit 15d.

  The side plate 16 is disposed on the piston 10 side so as to face the clutch plate 15. The side plate 16 includes a disk portion 16a, three engagement portions 16b, and three second spring storage portions 16c.

  As shown in FIG. 1, the inner peripheral portion of the disc portion 16 a is fixed to the flange portion 3 b of the turbine hub 3 together with the turbine shell by a rivet 7.

  The engaging portion 16b is formed on the outer peripheral portion of the disc portion 16a so as to protrude toward the transmission side. Each engaging portion 16b is inserted into the slit 15d of the clutch plate 15 and penetrates to the transmission side. As shown in FIG. 4B, the circumferential length of the engaging portion 16b is shorter than the circumferential length of the slit 15d, and a gap is secured between the engaging portion 16b and the slit 16d. The engaging portion 16b, that is, the side plate 16, is movable in the rotational direction with respect to the clutch plate 15 within the gap.

  A groove 16d extending in the circumferential direction is formed on the inner peripheral surface of the engaging portion 16b of the side plate 16. The snap ring 22 is attached to the groove 16d formed in the three engaging portions 16b. The snap ring 22 can be brought into contact with the side surface of the clutch plate 15 opposite to the side plate 16 so that the clutch plate 15 and the side plate 16 are not separated from each other in the axial direction.

  Both end surfaces of the snap ring 22 in the circumferential direction are in contact with the protrusions 15e of the clutch plate 15 as shown in FIG. 4B. Thereby, rotation of the snap ring 22 is prevented.

  The second spring storage portion 16c is formed at a position facing the first spring storage portion 15c, and is a portion that stores and holds the inner peripheral torsion spring 17 together with the first spring storage portion 15c. As described above, a set of two inner peripheral side torsion springs 17 are stored and held between the first spring storage portion 15c and the second spring storage portion 16c. Further, both ends of the second spring storage portion 16c in the circumferential direction can be brought into contact with the end surface of the inner peripheral torsion spring 17 stored therein.

  The intermediate plate 18 is disposed between the clutch plate 15 and the side plate 16 in the axial direction so as to be rotatable relative to both the plates 15 and 16. As shown in FIG. 6, the intermediate plate 18 is formed in an annular shape, and three engaging portions 18 a that protrude toward the inner peripheral side are formed on the inner peripheral portion. Each engaging portion 18a is disposed so as to be positioned at an intermediate portion in the circumferential direction between the first spring accommodating portion 15c and the second spring accommodating portion 16c. That is, each engagement portion 18 a is disposed between two inner peripheral torsion springs 17 of a set of two inner peripheral torsion springs 17.

  With such an intermediate plate 18, a set of two inner peripheral side torsion springs 17 can be operated in series.

[Operation]
When the speed of the vehicle exceeds a predetermined speed, the piston 10 is moved to the front cover 2 side, and the friction member 20 is pressed against the friction surface of the front cover 2. When the friction member 20 is pressed against the front cover 2, the torque of the front cover 2 is transmitted from the piston 10 to the outer peripheral side torsion spring 12 via the retaining plate 11. The torque transmitted to the outer peripheral side torsion spring 12 is further transmitted to the inner peripheral side torsion spring 17 via the engaging portion 15b of the clutch plate 15 and the first spring storage portion 15c. The torque transmitted to the inner peripheral side torsion spring 17 is transmitted to the turbine hub 3 via the second spring storage portion 16c. That is, the front cover 2 is mechanically coupled to the turbine hub 3, and the torque of the front cover 2 is directly output to the transmission input shaft via the turbine hub 3.

  During the power transmission as described above, the outer torsion spring 12 acts on the support member 13, and the inner torsion spring 17 acts on the intermediate plate 18, and the two torsion springs act in series. For this reason, low rigidity and wide twist angle can be realized.

[Feature]
(1) The damper mechanism on the inner peripheral side is constituted by a single clutch plate 15 and side plate 16, a torsion spring 17, and an intermediate plate 18, respectively. For this reason, the damper mechanism of the lock-up device can be made to have a low rigidity and a wide twist angle by using three plates, and the number of parts is reduced and the axial length is shortened compared to the conventional device. can do.

  (2) The stopper mechanism can be realized with a simple configuration by the slits 15d of the clutch plate 15 and the protrusions 16b of the side plate 16. In addition, the snap ring 22 provided in the stopper mechanism can position the two plates 15 and 16 in the axial direction, thereby simplifying the configuration.

-Second Embodiment-
A second embodiment of the present invention is shown in FIG. This 2nd Embodiment eliminates the outer peripheral side damper mechanism of 1st Embodiment. Specifically, the lockup device 1 ′ shown in FIG. 7 includes a piston 30, one clutch plate 31, one side plate 32, a plurality of torsion springs 33, and an intermediate plate 34. Have.

  The piston 30 has an annular disc portion 30a, an inner peripheral cylindrical portion 30b, and an outer peripheral cylindrical portion 30c. An annular friction member 35 is fixed to the outer peripheral portion of the disc portion 30a. The inner cylindrical portion 30b is formed to project from the inner peripheral end of the disc portion 30a toward the transmission side, and is slidable in the axial direction and the rotational direction on the outer peripheral surface of the cylindrical portion 3a of the turbine hub 3. It is supported. The outer cylindrical portion 30c is formed to extend from the outer peripheral portion of the disc portion 30a to the transmission side, and has a plurality of notches 30d arranged in the circumferential direction.

  The clutch plate 31 has the same configuration as that of the first embodiment except for the configuration of the portion related to the stopper mechanism extending to the outer peripheral portion. That is, it has the disc part 31a and the some 1st accommodating part 31c. A plurality of teeth 31 b are formed on the outer periphery of the clutch plate 31. The plurality of teeth 31b are formed at predetermined intervals in the circumferential direction, and are engaged with a plurality of notches 30d formed in the cylindrical outer peripheral portion 30c of the piston 30. With such a configuration, the piston 30 and the clutch plate 31 are movable in the axial direction and are not relatively rotatable.

  The side plate 32 has a disc part 32a, a fixed part 32b, and a second spring storage part 32c.

  The disc part 32a is arranged to face the clutch plate 31 in the axial direction. Further, a rivet described later is mounted on the outer peripheral portion of the disc portion 32a to constitute a stopper mechanism.

  The fixed part 32b is formed in a step difference from the disk part 32a in the axial direction. And the fixing | fixed part 32b is being fixed to the flange part 3b of the turbine hub 3 with the rivet 36 with the turbine shell.

  The second spring storage portion 32c is formed at a position facing the first spring storage portion 31c, and is a portion that stores and holds the torsion spring 33 together with the first spring storage portion 31c. Similarly to the first embodiment, a set of two torsion springs 33 is stored and held between the first spring storage portion 31c and the second spring storage portion 32c. Further, both ends of the second spring storage portion 32c in the circumferential direction can be brought into contact with the end surface of the torsion spring 33 stored therein.

  About the some torsion spring 33 and the intermediate | middle plate 34, it is the structure similar to 1st Embodiment, and description is abbreviate | omitted here.

<Rivets>
FIG. 8 shows an enlarged view of a rivet 38 that connects the clutch plate 31 and the side plate 32 and constitutes a stopper mechanism. The rivet 38 is formed on one end of the first body portion 38a, a circular first body portion 38a having a first diameter, a circular second body portion 38b having a second diameter smaller than the first diameter, and the first body portion 38a. It has a head part 38c and a caulking part 38d formed on the other end side of the second body part 38b.

  The first body portion 38a passes through a circumferentially long notch 32d formed on the outer peripheral portion of the side plate 33, and is movable in the rotational direction in the notch 32d. The notch 32d is open toward the outer periphery. The second body 38 b passes through the rivet through hole 32 d of the clutch plate 31. The head 38 c is formed to have a larger diameter than the first body 38 a and the notch 32 d of the side plate 32. The head 38c is in contact with the side surface of the side plate 32 on the piston side. The caulking portion 38d is a portion that is caulked after the rivet 38 is mounted on both the plates 31 and 32. After the caulking portion 38d is caulked, the caulking portion 38d is in contact with the side surface of the clutch plate 31 on the transmission side.

[Operation]
About operation | movement, there is only the effect | action of the damper mechanism of the outer peripheral side of 1st Embodiment, Comprising: Basic operation | movement is the same as that of 1st Embodiment. That is, when the speed of the vehicle becomes equal to or higher than a predetermined speed, the piston 30 is moved to the front cover 2 side, and the friction member 35 is pressed against the front cover 2. Thereby, the torque of the front cover 2 is transmitted from the piston 10 to the torsion spring 33 via the clutch plate 31 and further transmitted to the turbine hub 3 via the side plate 32. That is, the front cover 2 is mechanically coupled to the turbine hub 3, and the torque of the front cover 2 is directly output to the transmission input shaft via the turbine hub 3.

  In the second embodiment as well, the torsion spring 33 is actuated by the intermediate plate 34 so that two torsion springs act in series. For this reason, low rigidity and wide twist angle can be realized.

  Also in the second embodiment, as in the first embodiment, the damper mechanism is configured by one clutch plate 31 and side plate 32, a torsion spring 33, and an intermediate plate 34, respectively. Therefore, the number of parts can be reduced as compared with the conventional apparatus.

[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 particular, the specific shapes of the clutch plate and the side plate are not limited to the above embodiment, and various shapes are possible.

  In the above embodiment, the friction member is provided on the front cover side surface of the piston. However, a clutch portion including a plurality of friction members is provided, and torque is transmitted from the front cover to the torsion spring via the clutch portion. Similarly, the present invention can be applied.

1, 1 'Lock-up device 2 Front cover 3 Turbine hub 10, 30 Piston 11 Retaining plate (input plate)
12 outer torsion spring 13 support member 15, 31 clutch plate (first plate)
16, 32 Side plate (Output plate)
16b Engagement part 17 Inner peripheral side torsion springs 18, 34 Intermediate plate 22 Snap ring 33 Torsion spring 38 Rivet 38a First body part 38b Second body part 38c Head part 38d Caulking part

Claims (8)

  1. A lock-up device disposed between a front cover coupled to a member on an engine side and a turbine of a torque converter for mechanically transmitting torque from the front cover to the turbine;
    A clutch portion having a piston movable in the axial direction and transmitting or blocking torque from the front cover;
    One first plate to which torque is input from the clutch portion;
    A second plate disposed relative to the first plate and connected to the turbine;
    A plurality of elastic members that elastically connect the first plate and the second plate in a rotational direction;
    An intermediate member disposed between the first plate and the second plate in an axial direction so as to be relatively rotatable with the two plates, and causing at least two elastic members of the plurality of elastic members to act in series;
    With
    Each of the first plates has a plurality of first storage portions that are formed so as to protrude to one side in the axial direction and store the plurality of elastic members, and an end surface in a rotation direction of the first storage portion is a rotation of the elastic member. Can contact the end face of the direction,
    Each of the second plates has a plurality of second storage portions that are formed so as to protrude to the other side in the axial direction and store the plurality of elastic members together with the first storage portion, and an end surface in the rotation direction of the second storage portion the Ru contactable der the end face of the rotation direction of the elastic member,
    Torque converter lock-up device.
  2. A lock-up device disposed between a front cover coupled to a member on an engine side and a turbine of a torque converter for mechanically transmitting torque from the front cover to the turbine;
    A clutch portion having a piston movable in the axial direction and transmitting or blocking torque from the front cover;
    One first plate to which torque is input from the clutch portion;
    A second plate disposed relative to the first plate and connected to the turbine;
    A plurality of elastic members that elastically connect the first plate and the second plate in a rotational direction;
    An intermediate member disposed between the first plate and the second plate in an axial direction so as to be relatively rotatable with the two plates, and causing at least two elastic members of the plurality of elastic members to act in series;
    A stopper mechanism for positioning the first plate and the second plate in the axial direction and regulating a relative angle range of the two plates ;
    That features a torque converter lock-up device.
  3. The stopper mechanism is
    A plurality of slits formed in the first plate and extending in the axial direction and extending in the rotational direction;
    A plurality of protrusions formed by bending a part of the second plate toward the first plate, each inserted into a plurality of slits of the first plate;
    have,
    The lockup device for a torque converter according to claim 2 .
  4. The plurality of protrusions extend through the slit and have a groove on an inner peripheral surface,
    The stopper mechanism further includes a snap ring that is attached to the grooves of the plurality of protrusions and is capable of contacting the side surface of the second plate opposite to the first plate.
    The lockup device for a torque converter according to claim 3 .
  5. A lock-up device disposed between a front cover coupled to a member on an engine side and a turbine of a torque converter for mechanically transmitting torque from the front cover to the turbine;
    A clutch portion having a piston movable in the axial direction and transmitting or blocking torque from the front cover;
    One first plate to which torque is input from the clutch portion;
    A second plate disposed relative to the first plate and connected to the turbine;
    A plurality of elastic members that elastically connect the first plate and the second plate in a rotational direction;
    An intermediate member disposed between the first plate and the second plate in an axial direction so as to be relatively rotatable with the two plates, and causing at least two elastic members of the plurality of elastic members to act in series;
    An input plate fixed to the piston;
    A plurality of outer peripheral side elastic member is disposed on the outer peripheral side, elastically couple the outer peripheral portion of the first plates and the input plate in the rotational direction of the plurality of elastic members,
    A torque converter lockup device comprising:
  6. The input plate and the first plate are disposed so as to be rotatable relative to each other, support the outer peripheral portion and one axial side of the plurality of outer peripheral side elastic members, and at least two outer peripheries of the plurality of outer peripheral side elastic members The lockup device for a torque converter according to claim 5 , further comprising a support member for causing the side elastic members to act in series.
  7. A lock-up device disposed between a front cover coupled to a member on an engine side and a turbine of a torque converter for mechanically transmitting torque from the front cover to the turbine;
    A clutch portion having a piston movable in the axial direction and transmitting or blocking torque from the front cover;
    One first plate to which torque is input from the clutch portion;
    A second plate disposed relative to the first plate and connected to the turbine;
    A plurality of elastic members that elastically connect the first plate and the second plate in a rotational direction;
    An intermediate member disposed between the first plate and the second plate in an axial direction so as to be relatively rotatable with the two plates, and causing at least two elastic members of the plurality of elastic members to act in series;
    With
    Wherein the first plate has an outer peripheral portion that are engaged so as not to move axially and rotate relative to the piston,
    Torque converter lock-up device.
  8. A plurality of fastening members for supporting the second plate so as to be relatively rotatable with respect to the first plate within a predetermined angle range and immovable in the axial direction;
    The first plate has a plurality of arc-shaped elongated holes extending in the circumferential direction,
    The plurality of fastening members include a circular barrel portion that passes through the elongated hole, a head portion that is larger in diameter than the trunk portion and contacts a side surface of the first plate opposite to the second plate, A caulking portion that is caulked on a side surface opposite to the first plate of the second plate,
    The lockup device for a torque converter according to claim 7 .
JP2012201298A 2012-09-13 2012-09-13 Torque converter lockup device Active JP5555748B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2012201298A JP5555748B2 (en) 2012-09-13 2012-09-13 Torque converter lockup device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012201298A JP5555748B2 (en) 2012-09-13 2012-09-13 Torque converter lockup device
PCT/JP2013/074204 WO2014042113A1 (en) 2012-09-13 2013-09-09 Torque converter lockup device

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JP2014055643A JP2014055643A (en) 2014-03-27
JP5555748B2 true JP5555748B2 (en) 2014-07-23

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4522220B2 (en) * 2004-10-19 2010-08-11 株式会社エクセディ Damper disk assembly
JP5399644B2 (en) * 2008-03-25 2014-01-29 アイシン・エィ・ダブリュ工業株式会社 Torque converter with auxiliary damper
JP4773553B2 (en) * 2009-08-26 2011-09-14 株式会社エクセディ Lock-up device for torque converter
JP5106555B2 (en) * 2010-02-26 2012-12-26 株式会社エクセディ Lock-up device for torque converter

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JP2014055643A (en) 2014-03-27

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