Denso Corporation

Nippondenso Co., Ltd.

Other

Toyota Jidosha Kabushiki Kaisha

Bridgestone Corporation

Kabushiki Kaisha Toyota Jidoshokki

Meijo University

Desno Corporation

Yasuo Tabuchi

Junichi Ohguchi

Motohiko Ueda

Michiyasu Nosaka

Yoshiki Tada

Masashi Tobayama

Toshihiro Hayashi

Manabu Saiki

Hiroshi Shohara

Yasuji Kasuya

Takayuki Suzuki

Masahiro Kinoshita

Makoto Ito

Yuuichi Aoki

Akira Kishibuchi

Shigeyoshi Sakuraba

Tetuo Ohno

Mitsuhiro Tanabe

Hiroshi Nagae

Masahiro Yamashita

Masao Nakano

Haruo Suzuki

Hiroyasu Sakamoto

Kazunori Mizutori

Kiyoshi Kurohata

Naoto Agata

Yousuke Yamagami

Satoshi Kawakami

Yoshinori Fukumura

Keiji Ishikawa

Kouji Kida

Mitsunori Adachi

Taku Adaniya

Yasuhiro Suzuki

Minoru Mera

Naoki Hakamada

Toshio Shimomura

Youichi Murakami

Shigeo Murata

Kazuo Kato

Kichiro Kato

Toshihiro Konishi

Kiyomi Okuda

Tomoyuki Kurata

Tomoharu Arai

Takuo Sakai

Haruhisa Shibata

Masahito Yamashita

Tooru Ookuma

Takushi Kamiya

Yasuhiro Tamatsu

Koichi Hashinaga

Tomoyuki Mizuguchi

Yoshihiro Nakata

Kunihiro Kado

Kazuhiko Ohtsuka

Dieter Kuhn

Shouzou Tatematsu

Volker Friedrich

Hatsuhiko Usami

Thomas Rauth

Yuichi Aoki

Masashi Tabayama

Fumio Tanimoto

Hiroaki Ito

A coil housing has an inner ring, which is shaped into an annular form and is placed on an inner side of an electromagnetic coil in a radial direction of a rotational axis. A thermal fuse is placed on an inner side of a coil inner peripheral end of the electromagnetic coil in the radial direction, so that the thermal fuse can be placed in such a manner that the thermal fuse does not limit a length of the electromagnetic coil in a direction of the rotational axis by using a radial thickness of the inner ring that is indispensable as a part of a structure of a magnetic circuit. Thus, it is possible to sufficiently limit occurrence of limiting of a size of the electromagnetic coil that is caused by the placement of the thermal fuse.

Electromagnetic clutch and method for manufacturing same

A ring insertion groove is formed between adjacent two of circular plates, which are made of a magnetic material and are arranged concentric with each other, and a ring, which is made of a non-magnetic material and has a larger deformation resistance in comparison to the magnetic material of the plates, is press fitted into the ring insertion groove. Thereafter, a peripheral part around an opening of the ring insertion groove is plastically flowed, so that a compression stress is left in the ring.

Electromagnetic clutch and manufacturing method thereof

Provided are a fastened composite and a method of fastening an adherend, which includes a friction material, to a coating object, comprising; forming on at least a part of a surface of the coating object a coated film with a curable resin-containing paint; and fastening the adherend to the surface of the coating object, by subjecting heating and/or irradiation of an active energy ray to the coated film, while making the adherend closely contact the coated film to press it by a predetermined pressure, to cure the coated film.

Method of fastening adherend to coating object, and fastened composite

A recess, which has a bottom, is formed in at least one of a contact surface of a rotor and a contact surface of an armature. A solid material, which is made of thermoset resin that contains powder of metal oxide or metal dispersed in the thermoset resin, is formed in an inside of the recess.

Clutch

An end surface portion of a rotor includes a friction surface and an end surface, which are spaced from each other in an axial direction. The armature is attracted and attached to the friction surface of the rotor by an electromagnetic attractive force when a solenoid coil is energized. The stator is opposed to the end surface of the end surface portion. A thermal fuse is held by a portion of a resin member located in an opening of the stator and is melted and disconnected to cut supply of an electric current to the solenoid coil when a temperature of the thermal fuse is equal to or higher than a predetermined temperature. The resin member has a recess that is formed in a predetermined position of a surface of the resin member, which is adjacent to the thermal fuse.

A clutch mechanism includes a pulley, an armature, an electromagnet, a plate spring and a damper. The armature combines with the pulley in a direction of a rotation axis. The electromagnet generates attracting magnetic force, which attracts the armature in a joining direction. The plate spring generates resilient force, which urges the armature in an opposite direction from the joining direction. The damper includes an impact mitigation part mitigating an impact when the armature collides with the pulley. The pulley, the armature, the damper and the plate spring are arranged in this order in the direction of the rotation axis. The damper includes a contact portion contacting part of the armature in the direction of the rotation axis. The plate spring includes a pressing part pressing the contact portion on the armature during both the joining and unjoining of the armature and the pulley.

Clutch mechanism

A power transmission device includes a pulleyand a hubhaving an inner hub, a rubber damperand an outer hub. A hub side engagement portionformed of an elastic material and arranged at either one, or both, of an inner peripheral surface and an outer peripheral surface of the outer hub engages with a pulley side engagement portion, which is arranged at a position corresponding to the outer hub, of the pulley in a concavo-convex fitting to thereby constitute a torque transmission structure between the hub and the pulley. The hub side engagement portion and the pulley side engagement portion have a concavo-convex outer shape and mesh with each other. A ring-like dust invasion prevention portioncovers a front surface of said concavo-convex fitting.

Power transmission device

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 device includes a pulleyand a hubhaving an inner hub, a rubber damperand an outer hub. A hub side engagement portionformed of an elastic material and arranged either one, or both, of inner peripheral surface and outer peripheral surface of the outer hub engages with a pulley side engagement portion, arranged at a position corresponding to the outer hub, of the pulley in concavo-convex fitting to thereby constitute a torque transmission structure between the hub and the pulley. The hub side engagement portion and the pulley side engagement portion have a concavo-convex outer shape and mesh with each other.

A power transmission apparatus includes a pulleyhaving a belt attached thereto to transmit the rotating drive force, a hubwhich connects the pulley to a rotating shaft of a driven device, a bearingwhich rotatably supports the pulley, and a sleeve ringwhich is fitted and secured to the pulley and attaches the bearing to the pulley to prevent it relatively moving. The sleeve ring is provided, on its first end opposite to the driven device, with a bent portionagainst which the bearing abuts to restrict further movement of the bearing. An annular retaineris provided on the portion of the bearing adjacent to the drive device. The bearing is secured to the sleeve ring through the annular retainer by calking a second endof the sleeve ring opposite to the first end. The sleeve ring is provided with a projectionwhich projects in the axial direction from the rear surface of the pulley and a casingis provided with an annular groovewhich at least partly receives therein the projection.

Power transmission apparatus

A power transmission system including an integrally molded hub and elastic member, where stress is inhibited from concentrating at the gate marks remaining after integral molding. In a pulley driven by a belt, a plastic pulley side relief sectionprovided at a pocket section of the pulley and a plastic hub side relief section provided on an iron outer ring of the hub engaged at the pocket section whereby power is transmitted from the pulley to the shaft. The hub side relief section and outer ring forming parts of the hub, the iron inner hub to be fastened to the shaft, and the plastic cylindrical part are integrally molded so that the gate mark for plastic injection is formed near to or further to the outer circumference of the outer ring.

Power transmission system

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.

A power transmission device includes: a pulleyrotatably attached to a casing; a hubconnected to the pulleyby an engagement of protrusions with recesses; and a power shutoff memberinterposed between the huband a rotary shaft. The power shutoff member and the rotary shaftare joined to each other by means of screwing. When a water intrusion path formed between a hub side seating face of the hub and a shaft side seating faceof the rotary shaft is formed into a labyrinth structure, water is prevented from entering the seating face. An engagement portionon the power shutoff member side is engaged with a hub side engagement portionso that it can be accommodated in the hub side engagement portion, and the power shutoff member can be rotated together when the hub is rotated. An engagement gap formed between a power shutoff member side engagement portion and a hub side engagement portion in the radial direction perpendicular to an axis of the rotary shaft is in a range from 0.001 mm to 15% of a diameter of a circumscribed circle of the power shutoff member side engagement portion.

A power transmission device () comprises a rotatable rotary part () to which a rotational drive force is transmitted from a drive source and a power transmission shut-off member () that shuts off transmission of an excessive torque between the rotary part and a rotating shaft () of a device to be driven. The power transmission shut-off member is threadedly coupled to the rotating shaft and can rotate with the rotating shaft. The rotary part is installed so as to be sandwiched between the power transmission shut-off member and the rotating shaft. A disc spring (), installed between the power transmission shut-off member and the rotary part, is further provided. A caulked part () for preventing a part of the power transmission shut-off member from dropping is provided on the front end side of the rotating shaft.

A power transmission apparatus () includes a rotary portion () to which turning driving force from a driving source is transmitted and which can rotate, a power cutoff member () mechanically connected to the rotary portion () and one of the ends of a rotary shaft () of a driven apparatus and cutting off transmission of excessive torque between them, and a cap () connected to the end of the rotary shaft () on one hand and fastened by screw meshing to the power cutoff member () on the other hand, and transmitting power from the power cutoff member () to the rotary shaft (). The rotary portion (), the power cutoff member (), the cap () and the rotary shaft () all rotate integrally with one another. The cap () has a flange portion () protruding in a radial direction with respect to an axis of the rotary shaft () and supporting an axial force.

Growing community of inventors

Toyoake, Japan

Yasuo Tabuchi