Exedy Corporation

Mamoru Ohkubo

Hirotaka Fukushima

Hiroshi Mizukami

Kanehisa Nagao

A lockup device,of a torque converter,includes a damper mechanism,. The damper mechanism,includes a drive plate,a driven plate,coil springs,and a ring,The coil springs,transmit a torque between the drive plates,and driven plate,The coil springs,are aligned in the rotational direction of the torque converter,and extend in the rotating direction. The ring,allows movement of the coil springs,in rotational directions, while preventing movements in other directions. The ring,is supported by one of the drive and driven plates,and,, and extends through the coil springs,The ring,allows an increase in coil diameters of the coil springs,that are used in the lockup device,of the torque converter

Lockup device for torque converter

A lockup damper included in a lockup mechanism,of a torque converter,includes a piston member,, a driven member,, coil springs,and seat members,. The coil spring,is arranged between the piston member,and the driven member,. The seat member,is attached to the driven member,, has a loose-fit portion,loosely fitted to the end of the coil spring,, and restricts the radially outward movement of the end of the coil spring,by the loose-fit portion,fitted into the coil spring

Lockup damper, lockup mechanism and damper mechanism of torque converter

A clutch disk assembly,includes an output rotary member,an input rotary member,a first spring,a second spring,and a friction generating mechanism,The first spring,circumferentially and elastically couples the output and input rotary members,and,together, and is compressed in a first stage in which a torsion angle between them does not exceed a first torsion angle,The second spring,is compressed in a second stage in which the torsion angle between the output and input rotary members,and,exceeds the first torsion angle,and provides a rigidity in the second stage higher than a rigidity in the first stage. The friction generating mechanism,circumferentially and frictionally engages the input and output rotary members,and,with each other, and can generate slide in the first and second stages. The friction suppressing means (,and,) keeps the friction generating mechanism,from generating slide in response to the torsional vibrations not exceeding the predetermined torque in the first and second stages.

Clutch disk assembly having a two stage dampening mechanism having a further vibration dampening mechanism that functions in both stages of dampening

A clutch disk is provided with a cushioning plate 16 to prevent an eccentric abrasion of its friction facings. The clutch disk does not use rivets and has a cushioning function. The clutch disk includes a pair of friction facings 15a and 15b and a cushioning plate 16. The cushioning plate 16 includes in a fixing part 16a, a plurality of first installation parts 16b, a plurality of second installation parts 16c, a plurality of first connecting parts 16d, and a plurality of second connecting parts 16e. The first installation parts 16b have first friction facings 15a installed thereon. The first installation parts 16b with their first friction facings 15a extend from the fixing part 16a to an outer circumferential side of the cushioning plate 16. The second installation parts 16c have second friction facings 15b installed thereon. The second installation parts 16c with their second friction facings 15b are disposed between the first installation parts 16b in a circular direction in a location different from that of the first installation parts 16b in an axial direction. The first connecting parts 16d connect one of the ends of the first and second installation parts 16b and 16c together in a circular direction. The second connecting parts 16e connect the other ends of the first and second installation parts 16b and 16c together in a circular direction.

Clutch disk and a clutch disk assembly

A lockup damper included in a lockup mechanism 8 of a torque converter 1 includes a piston member 9, a driven member 10, coil springs 13 and seat members 40. The coil spring 13 is arranged between the piston member 9 and the driven member 10. The seat member 40 is attached to the driven member 10, has a loose-fit portion 40c loosely fitted to the end of the coil spring 13, and restricts the radially outward movement of the end of the coil spring 13 by the loose-fit portion 40c fitted into the coil spring 13.

A damper mechanism for attenuating vibrations having a vibration attenuating spring element (1) which includes: a leaf spring (2) having a bent portion (4) and a pair of lever portions (5) extending from both ends of the bent portion (4); and an elastic member (3) disposed between the lever portions (5). When the leaf spring (2) is subjected to compressive forces, the lever portions (5) and the elastic member (3) are elastically deformed. Internal friction is generated in the elastic member (5). The functions typically provided by a conventional elastic member and a conventional resistance generating mechanism are realized by utilizing a simple spring element composed of the leaf spring (2) and the elastic member (3).

Vibration attenuating spring and damper mechanism using the same spring

A lockup damper included in a lockup mechanism 8 of a torque converter 1 includes a piston member 9, a driven member 10, coil springs 13 and seat members 40. The coil spring 13 is arranged between the piston member 9 and the driven member 10. The seat member 40 is attached to the driven member 10, has a loose`-fit portion 40c loosely fitted to the end of the coil spring 13, and restricts the radially outward movement of the end of the coil spring 13 by the loose-fit portion 40c fitted into the coil spring 13.

A lockup damper of a torque converter 1 includes a retaining plate 14, a driven member 10, first coil springs 13A, second coil springs 13B and an intermediate plate 30. The first coil springs 13A are disposed between the retaining plate 14 and the driven plate 10. The second coil springs 13B are disposed between the retaining plate 14 and the first coil springs 13A. The intermediate plate 30 has spring support portions 32 disposed between the first and second coil springs 13A and 13B for circumferentially supporting the first and second coil springs 13A and 13B, and engagement portions 33a, 33b, 34a and 34b engageable with the retaining plate 14 or the driven member 10.

Lockup damper of torque converter

A gear teeth forming apparatus is used for forming a plurality of gear teeth on an outer circumferential wall of a pressed drum. The apparatus includes a die and a plurality of rotational rollers. A plurality of convex/concave portions are formed in the axial direction on the die. The die has an outer circumferential surface on which the outer circumferential wall of the pressed drum is fitted. Also, the die is movable in the axial direction. A plurality of the rotational rollers are insertable partially into grooves of the die and are rotatable along the grooves.

Press apparatus for forming gear teeth

A gear teeth forming apparatus is used for forming a plurality of gear teeth on an outer circumferential wall of a pressed drum. The apparatus includes a punch and a plurality of rotational rollers. A plurality of convex/concave portions are formed in the axial direction on the punch. The punch has an outer circumferential surface on which the outer circumferential wall of the pressed drum is fitted. Also, the punch is movable in the axial direction. A plurality of the rotational rollers are insertable partially into grooves of the punch and are rotatable along the grooves.

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Neyagawa, Japan

Mamoru Ohkubo