Denso Corporation

Masato Ichikawa

Tsuyoshi Arai

Shingo Sato

Shogo Kanzaki

Tadashi Ikemoto

Takahito Suzuki

Ryo Nomura

Yuto Sato

Ryuki Tsuji

Akihiko Goto

Akira Kuroyanagi

Hidehisa Nasu

Akira Sahashi

Masashi Mori

Masami Kojima

Mamoru Urushizaki

Akihumi Kurita

Takeshi Kusano

Atsushi Kawamura

Ryo Sano

Kazutoyo Oosuka

Naoki Hiraiwa

Yoshitaka Satou

Katsumi Nakazawa

Tohru Higuchi

Tomoyoshi Murata

Jun Hasebe

Masami Gotoh

A housing has a housing main body and an outlet port. The housing main body includes a cylindrical housing inner wall that defines an internal space therein. The outlet port fluidly connects the internal space and an outside of the housing main body to each other. The valve has a valve body rotatable about an rotation axis along a rotation axis of the cylindrical housing inner wall. The valve is configured to selectively open and close the outlet port depending on a rotation position of the valve. The housing inner wall is formed such that a distance between the housing inner wall and the axis of the housing inner wall varies in a circumferential direction.

Valve device

In an injection process, molten resin is successively injected from a first flow channel and a second flow channel connected with each other in order into a cavity of a metal mold. High-temperature resin existing in the first flow channel is injected in advance into the cavity as a part of a single shot of molten resin to later form a skin layer of a molded article. Other low temperature resin near a flowable limit existing in the second flow channel is subsequently injected into the cavity as another part of the single shot of molten resin to later form a core layer of the molded article. A low temperature resin remaining in the first flow channel when injection is completed is warmed to be a high-temperature resin before the next cycle, thereby allowing successive molding of molded articles.

System of manufacturing injection molded article and metal mold

A resin member is formed from a resin material containing filler and an insulating base polymer as a main component. The resin member includes an alignment layer close to a surface of the resin member. The alignment layer includes the filler aligned in the surface direction and the base polymer filling the space between pieces of the filler. The alignment layer includes a carbonized portion that is carbonized matter of the base polymer, contains graphite, and provides electrical conductivity and thermal conductivity.

Resin member and method for producing resin member

A molding die has a lower holder, an intermediate holder, an upper holder, a lock member, an upper link bar, a lower link bar, a restriction member, and a drive part. A movement of the lock member in a molding die opening direction or a molding die closing direction is restricted by the intermediate holder. The upper link bar has a first retaining groove in which the lock member fits when being located at a molding die closing position. The lower link bar has a second retaining groove in which the lock member fits and a release portion that enables the lock member to be released from the first retaining groove. The restriction member is movable between a restriction position that prevents the lock member from fitting in the second retaining groove and a free position that enables the lock member to fit in the second retaining groove.

Molding die and die-exchanging method

In a manufacturing method of a valve unit, which includes a valve having a rotatable shaft that is rotatably supported by a housing through a bearing to open and close a fluid passage defined in the housing, the housing and the valve are simultaneously molded in a mold assembly. The bearing is installed between the housing and the rotatable shaft during execution of the molding of the housing and the valve.

Manufacturing method of valve unit

A hot-air supply structure () comprises a hot air generator () and a housing () formed in the neighborhood of a hot-air inlet () of a molded component M in a die (). A nozzle () is formed at the forward end of the hot-air generator, and an ejection port () is formed on the side wall portion of the forward end needle unit () of the nozzle. The housing includes a support hole () in the nozzle, a relief hole (), a flow path communication passage () and a bypass (). The ejection port is movable between a first position to discharge the cool or warm air into the atmosphere through the bypass from the relief hole and a second position to introduce hot air into the flow path () of the molded component through the inlet () and the passage ().

Heated medium supplying method and structure for secondary molding of resin molded component

The change-over device changes over, to one of three passages, between the runner groove connected to the injection nozzle and the communicating groove communicated with the mold side passage. At the first position, the second passageis communicated with the communicating groove and the temperature of a flow of hot air is measured by the thermocouple and the flow is discharged into the atmosphere. At the second position, the runner groove and the communicating groove are communicated with each other when the runner groove and the communicating groove are open to the second passageand resin material is injected into the mold. At the third position, the material in the injection passage and the material in the runner groove are deposited to each other when the injection passage is shut off from the communicating passage and the third passageis communicated with the runner groove.

Method of manufacturing resin molding and change-over device for changing over between heating medium and resin material in process of secondary forming

The device includes: a runner block arranged at a position close to the injection port for resin material for secondary forming; and a slide core moved relatively with the runner block. In the runner block, a guide passage is formed which is communicated with a passage formed when pipe-shaped passages of the primary moldings are butted against each other. A heating medium passage or a resin material passage formed in the slide core are moved so that either the heating medium passage or the resin material passage can be selectively communicated with the guide passage formed in the runner block.

Change-over device for changing over between a heating medium and a resin material at a time of a secondary forming

There is provided a method for connecting an insulator coated wire with a conductive member while keeping the electrical resistance low and enough joint strength at the joint section therebetween without removing the coating film of the insulator coated wire beforehand. The conductive member has upper and lower pieces which pinch the insulator coated wire, and a gap between the upper and lower pieces varies at different locations. The wire and the conductive member have a good electrical connection at a region of the joint section where the gap between the upper and lower pieces is narrow. In addition, the connection strength of the wire and the conductive member can be enhanced at a region of the joint section where the gap between the upper and lower pieces is wide.

Method for connecting insulator coated wire

An ignition coil is composed of a transformer, an igniter, a housing accommodating them and a fixing portion disposed at a place within easy access from an opening of the housing to fix the igniter, a terminal pin disposed at a place of the housing within easy access from the opening and connected to the control circuit and a connector pin fixed to the housing and connected to the terminal pin. The igniter and fixing portion have a member for adjusting relative location therebetween to connect the connector pin and terminal pin without stress.

Growing community of inventors

Kariya, Japan

Masato Ichikawa