Exedy Corporation

Saburo Nakanishi

Hiroshi Uehara

Tamio Nagano

Hideyuki Imanaka

Yoshitaka Kitamura

A damper disc assembly having multiple embodiments. In one embodiment, spring seats are arranged at opposite ends of coil springs disposed between a power input rotary member and a power output rotary member. Each spring seat has a contacting surface with mutually perpendicular slanting portions. In another embodiment, a modified spring seat determines a phase or orientation of the power input rotary member with respect to the power output rotary member. In a third embodiment, a friction element is formed of resin and includes a friction adjusting element. The body portion of the friction element is made of resin and includes a friction generating surface that contacts a side surface of the sub-plate. The fiction adjusting element is provided in the friction generating surface of the body portion by molding and modifies the friction coefficient thereof. In a fourth embodiment, the friction element has a coating applied to a friction surface which modifies the friction coefficient.

Friction element for a damper disc having a friction adjusting element

A pair of spring seats (,) are used at opposite ends of a small coil spring (,) disposed between a power input rotary member and a power output rotary member. Each spring seat (,) includes a receiving side surface for receiving the spring and a contacting surface (,). Each contacting surface (,) is formed with four slanting surfaces that slant inward toward a central portion of the contacting surface. The intersections of the four slanting surfaces of each spring seat define two intersecting V-shaped grooves (,). The power input rotary member and the power output rotary member contact respective portions of one of the V-shaped grooves (,) of each spring seat. Engagement between the rotary members and the engaged V-shaped grooves restricts movement of the spring seats (,).

Damper disc assembly having non-rotatable spring seats

In one embodiment, a pair of spring seats (32) are intended for use at opposite ends of a small coil spring (6) disposed between a power input rotary member and a power output rotary member. Each spring seat (32) includes a receiving side surface for receiving a respective end of the small coil spring and a contacting surface (36). The contacting surface (36) is formed with slanting portions (37, 38) with V-shaped cross section, mutually perpendicular to one another. The power input rotary member and the power output rotary member contact a respective slanting section of one of the slanting portions (37, 38). In another embodiment, a spring seat (40) is provided with a first support portion (43) and a second support portion (44) such that the orientation of the spring seat (40) determines a phase or orientation of the power input rotary member with respect to the power output rotary member. In a third embodiment, a friction element is formed of resin and includes a friction adjusting element (20). The body portion (15a) of the friction element is made of resin and includes a friction generating surface contactable to the side surface of a sub-plate (5). The fiction adjusting element (20) is provided in the friction generating surface of the body portion (15a) by molding and is intended for modifying the friction coefficient thereof.

Damper disc assembly having spring seats for changing a phase

In one embodiment, a pair of spring seats (32) are used at opposite ends of a small coil spring (6) disposed between a power input rotary member and a power output rotary member. Each spring seat (32) includes a receiving side surface for receiving the small coil spring and a contacting surface (36). The contacting surface (36) is formed with slanting portions with V-shaped cross sections (37, 38) mutually perpendicular. The power input rotary member and the power output rotary member each contact a respective slanting section of one of the slanting portions. In another embodiment, a spring seat (40) is provided with a first support portion (43) and a second support portion (44) such that the orientation of the spring seat (40) determines a phase or orientation of the power input rotary member with respect to the power output rotary member. In a third embodiment, a friction element is formed of resin and includes a friction adjusting element (20). The friction adjusting element (20) is provided in the friction generating surface of the body portion (15a) of the friction element by molding and is intended for modifying the friction coefficient thereof. In a fourth embodiment, a first friction element (14) includes a friction generating surface having a coefficient of friction which differs from that of a friction generating surface of a second friction element (15).

Growing community of inventors

Amagasaki, Japan

Saburo Nakanishi