Denso Corporation

Other

Naoto Agata

Hiroyasu Sakamoto

Junichi Ohguchi

Yasuo Tabuchi

Makoto Ito

Mikio Matsuda

Naoki Hakamada

Yuuichi Aoki

Manabu Saiki

Masashi Tobayama

Naoji Konaga

Toshio Kamio

Souhei Komiyama

Yuichi Aoki

Hideo Kuroda

A power transmission apparatus is disclosed. A pulley is journalled through a ball bearing on the outer periphery of a bearing support portion arranged on a housing, and a metal ring is fitted on the inner periphery of the pulley. The outer ring of the ball bearing is press-fitted into the inner periphery of the metal ring, and a punch is forcibly pushed into a front-side end surface of the ring. In this way, punched holes each having a sectional area progressively increased from the rear to front side are formed, and the portions of the metal ring near to the inner periphery than the punched holes are pushed out and caulked. Thus, caulked portions are formed to fixedly caulk the outer ring.

Power transmission apparatus fabrication method and power transmission apparatus fabricated by the method

A torque transmission device includes a pulley, a cylindrical member, a torque limiter and a weight member. The pulley is rotated by torque transmitted from a drive source. The cylindrical member is connected to a rotatable shaft of a compressor and is rotated integrally with the rotatable shaft. The torque limiter is arranged between the pulley and the cylindrical member and transmits the torque from the pulley to the cylindrical member. The torque limiter disables the transmission of the torque when the torque becomes equal to or greater than a predetermined value. The weight member is secured to the cylindrical member at a point closer to the rotatable shaft than the torque limiter.

Torque transmission device having torque limiter

A power transmission system has a Neidhart structure in which a damper is shearing-deformed while being press-deformed when torque is applied to a pulley. The torque is transmitted from the pulley to a center hub by the reaction force in response to a vector component of the deformation of the damper, parallel to the pulley rotation direction, while a torque fluctuation is reduced by the deformation of the damper. Thereby, it is possible to set an elasticity modulus of the damper to be smaller. Therefore, it is possible to provide a compact power transmission system having a reduced torque fluctuation.

Power transmission system

A friction clutch such as an electromagnetic clutch, in which a driving friction surface is formed on a rotor integral with a rotationally driven pulley and a driven friction surface in opposed relation to the driving friction surface is formed on an intermediate member pivotally mounted on a boss by a pin, is disclosed. When the rotor is in rotation, the armature portion of the intermediate member is attracted by an initial energizing means for generating a comparatively small force such as an electromagnetic coil so that the intermediate member is rotated around the pin. When the friction surface of the intermediate member is lightly pressed against the friction surface of the rotor, the friction force exerted tangentially to the contact surface causes the intermediate member to rotate further around the pin and generate a large force along the normal. Thus, the friction force is increased thereby making it possible to transmit a large power from the rotor to the boss through the intermediate member.

Friction clutch

A connector-integrated coil apparatus that includes a stress-absorbing elbow segment that minimizes the chance of coil breakage. A fusing portion of a coil terminal wire and a terminal is located within a coupler rather than the interface between a metal housing and the resin coupler. Further, the fusing portion is located between a stress-absorbing elbow segment of the coil terminal wire and a tip of the terminal. Accordingly, even if stress is caused by a difference of thermal expansion coefficients between the housing and the coupler, the stress is absorbed by the stress-absorbing elbow segment. Accordingly, breakage of the coil terminal wire at the fusing portion is prevented.

Connector-integrated coil apparatus

Growing community of inventors

Toyoake, Japan

Naoto Agata