Denso Corporation

Keiji Ishikawa

Takayuki Suzuki

Yasuo Tabuchi

Michiyasu Nosaka

Yoshiki Tada

Takayuki Hirose

Motohiko Ueda

Yoshihiro Nakata

In an electromagnetic clutch, a rotor includes a cover portion that covers a radially outer end of an armature from a radially outer side. The cover portion, the radially outer end of the armature, and a wall of the rotor define a discharge passage that is formed into a ring shape centered on a rotating shaft and is open on a first end side in an axis line direction for discharging abrasion powder generated by friction between walls. The cover portion includes a tapered surface that is shaped such that an area in a cross sectional plane of the discharge passage which is orthogonal to an axis of the rotating shaft becomes larger toward the first end side in the axis line direction.

Friction clutch

A hub for use in a power transmission apparatus comprises cylindrical portionand outer ringincluding a plurality of tongue-like reinforcing portionseach protruded radially inward from the peripheral end of the corresponding one of the plurality of protrusions. When the distance from point C where the rear-side end surface of the cylindrical portionand hub-side engaging portionare connected with each other, to rear-side end surface D of reinforcing portionsis given a, and the distance from rear-side end surface D of reinforcing portionsto radially innermost front-side portion E is given b, distance b is less than one half of distance a.

Hub for power transmission apparatus

A power transmission apparatus comprises a pulley mounted rotatably on a casing of a rotary device, a hub coupled to the pulley by fitting between depressions and protrusions, a power shutoff member for preventing excessive torque between a rotary shaft and the hub, and an engaging device for engaging the hub and the pulley each other. The engaging device includes a first stepped portion formed radially on the outer periphery of the hub and a second stepped portion formed radially on the inner peripheral wall of a rim of the pulley in such a manner as to engage the first stepped portion in the axial direction.

Power transmission apparatus

Growing community of inventors

Okazaki, Japan

Keiji Ishikawa