Meidensha Corporation

Waseda University

Daizo Takahashi

Toshimasa Fukai

Michihiro Hatanaka

Masahiko Ieda

Suguru Noda

Toru Tanimizu

Hisashi Sugime

Toshinori Tatsumi

Yuichi Nishikiori

Hayato Ochi

Rena Takahashi

Kotaro Yasui

Sae Kitagawa

It is a CNT device () (carbon-metal structure) equipped with a carbon nanotube layer () (CNT layer; same hereafter) on a metal pedestal (). The metal pedestal () is brazed to the CNT layer () with a brazing material layer () interposed therebetween. When manufacturing the CNT device (), firstly, the CNT layer () is formed on a heat-resistant textured substrate (). Next, the metal pedestal () is brazed to the CNT layer () that is on the heat-resistant textured substrate () with the brazing material layer () interposed therebetween. Then, the metal pedestal () (and the CNT layer) is peeled off the heat-resistant textured substrate () to transfer the CNT layer () from the heat-resistant textured substrate () to the metal pedestal ().

Carbon-metal structure and method for manufacturing carbon-metal structure

In case of using multi-contacts or flat braided wires for constituting a current carrying structure of a movable part in a vacuum relay, problems tend to appear, which are enlargement of a control mechanism, complication, increased operation force and the like. The vacuum relayincludes an insulating cylinder, a first relay connecting portionthat is connected to one open end of the insulating cylinderand has on its inner surface a first contact, a second relay connecting portionthat is arranged in the insulating cylinderto face the first relay connecting portion, a movable memberthat is movably arranged between the first and second relay connecting portionsandand has a second contact that is brought into contact with the first contact when the movable member is moved toward the first relay connecting portion, and a control mechanismthat moves the movable memberin both directions to establish and break the contact between the two contacts. Between the movable memberand the second relay connecting portion, there is provided a bellowsthrough which the movable memberand the second relay connecting portionare electrically connected.

Sealed relay

An emitter () and a target () are arranged so as to face each other in a vacuum chamber (), and a guard electrode () is provided at an outer circumferential side of an electron generating portion () of the emitter (). The emitter () is supported movably in both end directions of the vacuum chamber () by the emitter supporting unit () having a movable body (). The emitter supporting unit () is operated by an operating unit () connected to the emitter supporting unit (). By operating the emitter supporting unit () by the operating unit (), a distance between the electron generating portion () of the emitter () and the target () is changed, and a position of the emitter () is fixed at an arbitrary distance, then field emission is performed with the position of the emitter () fixed.

Field emission device and field emission method

Emitter () and target () are arranged so as to face each other in vacuum chamber (), and guard electrode () is provided at outer circumferential side of electron generating portion () of emitter (). Guard electrode () is supported movably in directions of both ends of vacuum chamber () by guard electrode supporting unit (). To perform regeneration process of guard electrode (), guard electrode () is moved to opening () side (to separate position) by operating guard electrode supporting unit (), and a state in which field emission of electron generating portion () is suppressed is set, then by applying voltage across guard electrode (), discharge is repeated. After performing regeneration process, by operating guard electrode supporting unit () again, guard electrode () is moved to opening () side (to emitter position), and a state in which field emission of electron generating portion () is possible is set.

Electric field radiation device and regeneration processing method

Disclosed is a method for manufacturing a vacuum capacitor () provided with an insulating pipe (), terminal electrodes () that are disposed at open ends of the insulating pipe (), and spiral electrodes () that are connected to the terminal electrodes (). An electrode plate () and a spacer () are wound on a core member () to prepare a spiral electrode (), and an electrode plate () and a spacer () are wound on a core member () to prepare a spiral electrode (). A linear brazing material () is disposed in a groove () formed in a surface of the terminal electrode () on an inner side of the insulating pipe (). A platy brazing material () is sandwiched between the terminal electrode () and the spiral electrode () to fix the spiral electrode () to the terminal electrode (). The insulating pipe () and the spiral electrode () are placed on the terminal electrode (), and the terminal electrode () is disposed on the insulating pipe (), thereby temporarily assembling the vacuum capacitor (). The vacuum capacitor () is put into a vacuum heating furnace, and the terminal electrode () and the spiral electrode (), the terminal electrode () and the spiral electrode (), and the insulating pipe () and the terminal electrodes () are respectively brazed.

Capacitor manufacturing method

Emitter () and target () are arranged so as to face each other in vacuum chamber (), and guard electrode () is provided at outer circumferential side of electron generating portion () of emitter (). Emitter () is supported movably in both end directions of vacuum chamber () by emitter supporting unit () having movable body (). To perform regeneration process of guard electrode (), emitter is moved to no-discharge position by operating emitter supporting unit, and state in which field emission of electron generating portion () is suppressed is set, then by applying voltage across guard electrode (), discharge is repeated. After regeneration process, by operating emitter supporting unit again, emitter is moved to discharge position, and state in which field emission of electron generating portion () is possible is set with movement of movable body () toward the other and side being restrained by movement restraining unit ().

Field emission device and reforming treatment method

In a vacuum chamber (), an emitter () and a target () are opposed to each other. A guard electrode () is disposed around an outer circumference of an electron generating portion () of the emitter (). A supporting part () supports the emitter () movably in an end-to-end direction of the vacuum chamber (). Reforming treatment is performed on the guard electrode () by operating the supporting part (), moving the emitter () to an open end () side (non-discharge position) and applying a voltage to repeatedly effect discharge on the guard electrode () in a state where field emission from the electron generation portion () is suppressed. After the reforming treatment, the supporting part () is again operated. The emitter () is moved to an open end () side (discharge position) and placed in a state where field emission from the electron generation portion () is allowed.

Conventional example is arranged simply to turn a circuit on/off, and not to changeover connection. Sealed relaycomprises: insulating tube; first relay connect portionattached to one end of insulating tube, and provided with first contacton inside surface; second relay connect portiondisposed in confrontation with first relay connect portionin insulating tube; movable memberdisposed movably between first and second relay connect portionsand, and provided with second contactcontacting with first contactwhen moved toward the first relay connect portion; and operating mechanism to move the movable member. Third relay connect portionincluding third contactis provided between the second and first relay connect portions. Movable memberincludes a fourth contact contacting with the third contact when the first and second contacts are out of contact from each other.

Growing community of inventors

Numazu, Japan

Daizo Takahashi