Meidensha Corporation

Waseda University

Yuichi Nishikiori

Toshimasa Fukai

Eiichi Takahashi

Kaoru Kitakizaki

Toru Tanimizu

Toshinori Tatsumi

Takuya Shimokawa

Suguru Noda

Daizo Takahashi

Hisashi Sugime

Hayato Ochi

Rena Takahashi

Yoshiyuki Tanimizu

Kotaro Yasui

Sae Kitagawa

A reverse force mechanism includes a main shaft, a main link, a movable shaft, an actuating link, a slider, an actuating shaft, a spring link, and a spring shaft. A reverse force spring is attached to the spring link. The spring shaft is fixed to a position a dimension away in a direction parallel to the slider from a base point on an extension of a line segment from the main shaft to the movable shaft when in an inserted state in which the movable shaft is farthest from a line connecting the main shaft and the actuating shaft. The dimension is set such that a resultant operating force is constant at a non-zero value. An angle between the actuating link and the slider is set to be variable within a range of 25° to 85° during operation.

Reverse force mechanism

A vacuum capacitor is provided with a vacuum container accommodating a fixed electrode and movable electrode to ensure capacitance, and a vacuum expansion container communicating with the vacuum container in series. The vacuum container is provided with a movable support part supporting the movable electrode, a movable conductor supporting the movable support part to enable reciprocation in the axial direction of the vacuum container, a fixed conductor supporting the fixed electrode, and a main bellows interposed between the movable support part and the movable conductor. The vacuum expansion container is provided with a movable part arranged coaxially with the movable support part, and an adjustment bellows interposed between the movable part and the inner end surface of the vacuum expansion container. The movable support part and movable part are connected by an insulating connection rod arranged coaxially with the fixed electrode and movable electrode.

Vacuum capacitor

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

A vacuum capacitor includes a fixed electrode, a movable electrode, a movable electrode shaft, a magnetic flux receiving unit, a magnetic flux generating unit and a capacitance control unit. The fixed electrode is formed from a plurality of electrode members in a vacuum casing. The movable electrode is formed from a plurality of electrode members arranged in gaps formed between the electrode members of the fixed electrode in the vacuum casing. The movable electrode shaft supports the movable electrode. Capacitance appearing between the movable electrode and the fixed electrode is varied by rotation of the movable electrode shaft. The magnetic flux receiving unit rotates the movable electrode shaft in the vacuum casing. The magnetic flux generating unit is located outside the vacuum casing and rotates the magnetic flux receiving unit by magnetic attraction. The capacitance control unit rotates the magnetic flux generating unit.

A vacuum capacitor includes a fixed electrode, a movable electrode, a movable electrode shaft, a magnetic flux receiving unit, a magnetic flux generating unit and a capacitance control unit. A plurality of electrode members in a vacuum casing form the fixed electrode. The fixed electrode is divided into a plurality of fixed electrodes, and each fixed electrode is lead outside the vacuum casing and electrically connected to each other in series. A plurality of electrode members arranged in gaps between the electrode members of the fixed electrode form the movable electrode. Rotating the movable electrode shaft, which supports the movable electrode, varies capacitance between the movable electrode and the fixed electrode. The magnetic flux receiving unit rotates the movable electrode shaft. The magnetic flux generating unit, located outside the vacuum casing, rotates the magnetic flux receiving unit by magnetic attraction. The capacitance control unit rotates the magnetic flux generating unit.

The present invention can easily adjust capacitance of a vacuum capacitor while maintaining a vacuum state in a vacuum chamber of the vacuum capacitor. A fixed electrodeis formed by arranging a plurality of flat electrode membersin layers at a certain distance in an axial direction of a vacuum chamber. A movable electrodeis formed by arranging a plurality of flat electrode membersin layers at a certain distance in the axial direction of the vacuum chamberand fixing the electrode membersto a movable electrode shaft. By rotation of the movable electrode shaft, each electrode memberis inserted into and extracted from a gap between the electrode membersof the fixed electrodein noncontact with the electrode membersof the fixed electrode. A magnetic flux receiving portionis fixed to a seal memberside of a disk memberthat is provided at the movable electrode shaft. A magnetic flux generating unitprovided at a capacitance control unitis arranged in a direction parallel to the movable electrode shaftwith respect to the magnetic flux receiving portion. By rotating the capacitance control unitalso rotating the magnetic flux receiving portionby magnetic attraction of the magnetic flux generating unit, an overlap area of the movable electrodewith respect to the fixed electrodeis changed, capacitance is then adjusted.

Growing community of inventors

Shizuoka, Japan

Yuichi Nishikiori