Valeo Japan Co., Ltd.

Valeo Thermal Systems Japan Corporation

Yuichi Imai

Takashi Watanabe

Katsumi Sakamoto

Hidetoshi Arahata

Daisuke Asakura

Kuniaki Shimizu

An electromagnetic clutch includes a rotor, an armature plate that is disposed to face the rotor, an excitation coil that is accommodated on the inside of the rotor, and generates an attracting force attracting the armature plate onto the rotor, a temperature fuse that is disposed on the excitation coil side further than a side end surface of the rotor, and blocks the electric connection to the excitation coil when exceeding a predetermined temperature, an outer and inner magnetic blocking portion on the side end surface of the rotor, and an intermediate magnetic blocking portion in the armature plate in a position between the outer and the inner magnetic blocking portions, in which an annular groove is formed on the side end surface to include the inner magnetic blocking portion, and in which a friction member protruding from the side end surface is disposed in the annular groove.

Electromagnetic clutch

An electromagnetic clutch capable of reducing attracting noise generated when an armature plate is attracted to the friction surface of a rotor, wherein the thickness of the projected part () of an elastic member () in the state of being compressingly held by an inner plate () and the armature plate () is increased more than the thickness of the projected part () of the elastic member () in the state of being compressively held by an outer plate () and the armature plate (), whereby the volume of the projected part () of the elastic member () can be increased relative to that of the projected part ().

Growing community of inventors

Saitama, Japan

Yuichi Imai