Honda Motor Co., Ltd.

Honda Giken Kogyo Kabushiki Kaisha

Hitachi Astemo Ltd.

Hitachi Powdered Metals Co., Ltd.

Myojo Foods Co., Ltd.

Other

Hitachi Automotive Systems, Ltd.

Kabushiki Kaisha Riken

Daido Kogyo Co., Ltd.

Akira Fujiwara

Tsutomu Saka

Noriyuki Yamada

Keiichiro Kashiwabara

Manabu Yazaki

Kei Ishii

Tomoyuki Suzuki

Takeshi Hoshinoya

Heisuke Kobayashi

Tadayuki Tsutsui

Morinobu Kawamura

Shunsuke Isogai

Hideaki Noto

Sachio Kawada

Takeo Kobayashi

Kazushige Yakubo

Haruo Harada

Atsushi Shirakawa

Hiroshi Abe

Yasuyuki Saito

Kazuo Yoshida

Hisashi Kojima

Hiroshi Hamano

Norifumi Yasuda

Toshinari Sonoda

Toshihiko Matsubara

Noriaki Matsumoto

Atsushi Nishida

Tsuyoshi Harada

Yutaka Koinuma

Jyun-ichi Yamada

Yoshio Okumura

Tomoaki Arakawa

Kesayoshi Kudo

Yoshio Hatanaka

Fujio Itabashi

Kaoru Kamibayashi

Hironori Iimura

Yoshiaki Kawabata

Satoshi Hatsugai

Shinya Ohara

Osamu Murai

Yuji Yamanishi

Ryoji Sato

Yu Asakura

A driving unit includes a rotary electric machine which has a rotation axis extending in a horizontal direction, a rotary electric machine case, and an electric power conversion device. The electric power conversion device is disposed on one side of the rotary electric machine in an orthogonal direction. A first coolant is stored in a rotary electric machine accommodating portion of the rotary electric machine case. The driving unit has a first connecting portion electrically connecting the rotary electric machine and the electric power conversion device and a second connecting portion electrically connecting a sensor provided to the rotary electric machine and the electric power conversion device. The first connecting portion and the second connecting portion are disposed between the rotary electric machine and the electric power conversion device in the orthogonal direction.

Driving unit and vehicle

A rotating electrical machine case includes a case body having a cylindrical shape surrounding a rotating electrical machine and a side wall portion provided on at least one end side of the case body in a rotation axis direction. The side wall portion is provided with a plurality of ribs extending in a radial direction when viewed from the rotation axis direction of a rotating electrical machine and the plurality of ribs include ribs having different circumferential widths.

Rotating electrical machine case

Disclosed is a motor unit that includes: a rotary electrical machine that has a cylindrical stator, a rotor disposed coaxially with the stator, a shaft disposed coaxially with the rotor, and a cylindrical case that houses the stator and the rotor; and a drive unit that has a swell swelling toward the case and is fixed to a circumferential surface that is located in a radial direction of the rotor and is the case. The case has a recess that corresponds to the swell.

Motor unit

A bush chain includes a plurality of units. The plurality of units are coupled together in an endless shape and each include a pair of inner plates, a bush, a pair of outer plates, and a coupling pin. The pair of inner plates each include a pair of bush holes. The bush is fixed to the bush hole and includes a pin hole. The pair of outer plates are each disposed at the outside of the respective inner plate. The coupling pin is fixed to the outer plates, and is inserted through and rotatable in the pin hole of the bush. Abrasive particles are embedded in an inner peripheral face at the pin hole of the bush.

Bush chain and roller chain

A silent chain includes a first link, a second link, and coupling pins. The first link is configured from one or more first link plates that include a pair of first pin holes. The second link is configured from one or more second link plates that include a pair of second pin holes. The coupling pins are inserted through the respective first pin holes of the first link plate and the respective second pin holes of the second link plate. The coupling pins alternately couple the first link and the second link together along a chain drive direction so as to enable the first link and the second link to flex. Abrasive particles are embedded in inner peripheral faces at the pin holes of the first link plate and the second link plate.

Silent chain, bush chain, and roller chain

A sliding part comprises a first sliding member made of a steel, a second sliding member made of a steel, a first carbide film comprising a carbide and formed on the surface of the first sliding member, and a second carbide film comprising a carbide and formed on the surface of the second sliding member. The first sliding member and the second sliding member slide relative to each other while applying loads on each other. The carbide of the first carbide film and the carbide of the second carbide film differ from each other, and the hardness ratio of the first carbide film and the second carbide film is not more than 1.4.

Sliding part

A chain pin manufacturing method that requires only one heat treatment step of forming a boundary part composed of (V, Cr)Cby Cr and C in a base material at first through a cementation process in a VCl atmosphere by using Cr-rich steel as the pin base material and of forming a surface layer composed of VC. A Cr content in the boundary part decreases gradually toward the base material and the surface layer and the boundary part is not clearly divided. The inventive manufacturing method is simple and enables to manufacture the pin having high abrasion resistance and suitably used in a severe environment like a timing chain.

Pin for chain and method for manufacture thereof

A pin is relatively rotatably fitted into a pin hole formed in an outer link plate of a chain. A plurality of helical grooves are formed on an outer circumferential surface of the pin. A pitch P between adjacent helical grooves in the axial direction is equal to or less than a width in the axial direction of the pin hole of the outer link plate. At least one helical groove is arranged to oppose an arbitrary generatrix on an inner circumferential surface of the pin hole. Also, when a radius of the pin is R and a relative rotation angle with the mating member is &#x3b8;, a pitch P' in the circumferential direction between adjacent helical grooves is R&#x3b8; or less. Thus, at least one helical groove is arranged to always pass each position in a sliding range between the pin and the pin hole.

Pin and chain

Disclosed is a sintered gear composed of a sintered alloy having a metal matrix and pores. The tooth surface () of the tooth and the bottom land () have a densified layer () in which the porosity is reduced to 10% or less from the sintered alloy. The densified layer at the tooth surface is formed with a thickness of 300 to 1,000 microns, and the densified layer at the bottom land is formed with a thickness of 10 to 300 microns. The boundary surface of the densified layer is continuous from the tooth surface side to the bottom land side so as not to have a substantial level difference.

Sintered gear

A sintered sprocket is provided in which surface pressure resistance can be improved without using a forging processing. An Fe-based sintered alloy which contains C at 0.2 to 0.5% by weight, Mo at 0.2 to 1.0% by weight, and Ni at 0.2 to 1.0% by weight, and which exhibits a metallic structure in which an internal base layer comprises ferrite and bainite and in which the ferrite adjoins voids, is subjected to a rolling and is then subjected to carburizing and hardening.

Sintered sprocket

A chain guide member used in a chain transmission apparatus, and manufacturing method and apparatus thereof. The chain guide member has a sliding contact section extending along a traveling surface of a chain and coming into sliding contact with the chain, and a reinforcement main body reinforcing and supporting the sliding contact section along the traveling surface of the chain. A part or all of a joint portion between the sliding contact section and the reinforcement main body is joined by melting.

Chain guide member, a chain guide member manufacturing method and a chain guide member manufacturing apparatus

In a processing method for strengthening carbon steel materials, a carbon steel having an average hardness in the range of HRC 50 to 57 and a bainite structure is subjected to a tension working so as to provide a residual strain of at least 0.3% to the carbon steel. The tensile load in the tension working exceeds the yield point, and is 95% or less of the fracture load.

Carbon steel material and processing method for strengthening the same

In carrying out a cast-in process, a cast-in insert member is placed into a cast forming cavity in a casting mold, and a casting is conducted. The cast-in insert member has a barrier layer on its non-deposited surface for inhibiting the deposition of a molten metal. During casting, a portion of a molten metal is introduced to a heating chamber on the side of the barrier layer to come into contact with the barrier layer. Thus, the cast-in insert member can be heated not only from the side of its deposited surface, but also from the side of its non-deposited surface, thereby providing an enhanced strength of deposition of the cast-in insert member.

Cast-in process

In producing a rocker arm, following steps are used: fabricating a rocker arm blank which includes: a rocker arm body having an aperture therein adapted to be converted to a hole for the insertion of a shaft, and which blank is made of a nitrided steel comprising specified amounts of C, Mn, Cr, Al, Si, P, S, Cu, Ni, one of Pb and Bi, and optionally Mo, and, as the balance substantially, Fe; and a slipper surface forming piece; subjecting the rocker arm blank to a refining treatment to adjust its hardness; subjecting the apertures to reaming to form the shaft insertion holes; and subjecting the rocker arm blank with the shaft insertion holes formed therein to a nitriding treatment. Thus, it is possible to mass-produce rocker arms for an internal combustion engine, each of which has excellent mechanical properties.

Process for producing rocker arm for internal combustion engine

A cast iron slide member is formed from cast iron comprising 3.0% to 3.6% by weight of carbon (C), 1.6% to 2.4% by weight of silicon (Si), 0.2% to 1.5% by weight of manganese (Mn), 0.5% to 1.5% by weight of chromium (Cr), 1.5% to 3.0% by weight of nickel (Ni), 0.5% to 1.0% by weight of molybdenum (Mo), 0.0003% to 0.1% by weight of at least one chilling promoting element E.sub.L selected from the group consisting of bismuth (Bi), tellurium (Te) and cerium (Ce), and the balance of iron (Fe) and unavoidable impurities. The slide member has a chilled slide portion. Thus, it is possible to improve the scuffing and pitting resistances of the slide portion.

Cast iron slide member

Growing community of inventors

Wako, Japan

Akira Fujiwara