Nissan Shatai Co., Ltd.

Nissan Motor Company Limited

Kokusan Kinzoku Kogyo Kabushiki Kaisha

Mitsuo Kamata

Haruo Mochida

Yoshio Watanuki

Mikio Masaki

Etsuo Nara

Taizo Wada

Yutaka Yamashita

A steering lock device includes a housing and a key cylinder rotatably disposed in the housing. A generally cylindrical member is rotatably disposed within the housing coaxially with the key cylinder. The cylindrical member includes an outer wall with a groove having a first circumferential groove section, a second circumferential groove section axially spaced from the first circumferential groove section, and a junction section connecting the first and second circumferential groove sections. A first surface is disposed at one end of the first groove section at the junction section and inclined at a predetermined angle to the first groove section, and a second surface is disposed at the end of the second groove section at the junction section and arranged generally perpendicular to the second groove section. A latch is slidably disposed within the housing and includes a first end projecting outwardly from the housing and a second end projecting within the groove in the outer wall of the cylindrical member.

Steering lock

A dynamic damper comprising at least one elastic member and mass member is mounted within a conventional shaft housing eccentrically with respect to an axis center of a steering shaft. The elastic member of the dynamic damper gives a spring constant which is maintained at a constant value designed to provide a required resonant frequency at the mass member for suppresing a vibration transmitted to a steering wheel via the steering shaft since the vibration transmitted from the steering shaft to the steering wheel is always applied to the dynamic damper in the shear direction of said elastic member regardlessly of the steering wheel angular position.

Anti-vibration structure of a steering arrangement

Growing community of inventors

Chigasaki, Japan

Mitsuo Kamata