Panasonic Intellectual Property Management Co., Ltd.

Panasonic Electric Works Co., Ltd.

Panasonic Corporation

Katsuya Uruma

Satoshi Sakai

Shinya Kimoto

Masato Nakamura

Shun Ito

Masahiro Ito

Ritsu Yamamoto

Riichi Uotome

Motoharu Kubo

Hideki Enomoto

Yohji Ikeda

Katumi Yositani

Masahiro Itou

This breaker device includes a resin member, an igniter, and a conductor. The resin member includes an internal space. The igniter introduces gas into the internal space. The conductor is plate-shaped and located below the igniter. The conductor includes: a first holding portion embedded in the resin member; a second holding portion embedded in the resin member; and a connecting portion connecting the first holding portion and the second holding portion. The first holding portion includes a through-hole.

Breaker device

This breaker device includes: a casing; an igniter disposed in the casing; a conductor including a separating portion disposed below the igniter; and a pusher located between the separating portion and the igniter and configured to move together with the separating portion from a first position to a second position located below the first position. The casing includes: a first casing made of a metal, including a first fixing portion, and configured to house the igniter and the pusher located at the first position; and a second casing made of a metal, including a second fixing portion, and configured to house the pusher that has moved to the second position and the separating portion that has moved downward together with the pusher. The first fixing portion and the second fixing portion overlap each other, come into contact with each other, and are fixed to each other.

A disconnect device includes: a conductor connectable to an external conductive path; a housing that has an internal space and accommodates at least a part of the conductor; and a cooling body that is disposed in the internal space and cools an arc generated in the internal space. The cooling body includes a porous body configured with at least one of a metal oxide and an inorganic oxide.

Interruption device

An electromagnetic device includes a fixed iron core through which a first magnetic flux flows, a movable iron core that reciprocates to separate from the fixed iron core by a predetermined gap when a current applied to a coil, which generates the first magnetic flux, is stopped and move to the fixed iron core by an attractive force when the current is applied to the coil. The electromagnetic device also includes a permanent magnet that generates a second magnetic flux. The opposed surface of the fixed iron core and the opposed surface of the movable iron core may be opposed in a reciprocating direction of the movable iron core. The permanent magnet may be attached to the fixed iron core such that a magnetized surface of the permanent magnet is opposed and exposed to the opposed surface of the movable iron core.

Electromagnetic device and electromagnetic relay equipped with electromagnetic device

An electromagnetic device includes a coil, a fixed iron core, a movable iron core configured to reciprocate to separate from the fixed iron core by a predetermined gap when a current applied to the coil is stopped and move to the fixed iron core by an attractive force when the current is applied to the coil, and a permanent magnet. The permanent magnet is arranged so that the permanent magnet is opposed to the gap in a second direction perpendicular to a first direction and separated from the fixed iron core and the movable iron core with a space interposed therebetween. A direction of a second magnetic flux generated by the permanent magnet conforms to a direction of the first magnetic flux between opposed surfaces of the fixed iron core and the movable iron core.

An electromagnetic device includes a coil, a fixed member, a movable member configured to reciprocate to separate from the fixed member by a predetermined gap when a current applied to the coil is stopped and move to the fixed member by an attractive force when the current is applied to the coil, and a permanent magnet. The permanent magnet is arranged at a position adjacent to the gap and separated from the fixed member and the movable member with a space interposed therebetween. A direction of a second magnetic flux generated by the permanent magnet conforms to a direction of a first magnetic flux generated between the respective opposed surfaces of the fixed member and the movable member when the current is applied to the coil.

An electromagnetic device includes: a coil configured to generate a first magnetic flux; a fixed member, a movable member configured to reciprocate to separate from the fixed member by a predetermined gap when a current applied to the coil is stopped and move to the fixed member by an attractive force when the current is applied to the coil; and a permanent magnet configured to generate a second magnetic flux between the respective opposed surfaces of the fixed member and the movable member in the same direction as the first magnetic flux. The permanent magnet is attached to at least one of the fixed member and the movable member such that a magnetized surface of the permanent magnet is opposed and exposed to the opposed surface of the other one of the fixed member and the movable member.

A contact device includes: a contact block including a plurality of fixed terminals on which fixed contacts are formed, and a movable contactor on which movable contacts contacting and leaving the fixed contacts are formed; and a driving block that drives the movable contactor. Moreover, it is made possible to extinguish arcs, which are generated in an event where the contacts contact and leave each other, by arranging permanent magnets on a periphery of the contact block. Then, at least one fixed terminal among the plurality of fixed terminals is formed so that the fixed contact and the movable contact can abut against each other in a region other than a side opposite to the other fixed terminal.

Contact device and electromagnetic relay equipped with the contact device

A breaker includes a contact unit provided in an airtight container. The contact unit has fixed contact points and a movable contact point which selectively contacts with the fixed contact points. Further, the breaker include a movable shaft having a part projecting outward from the airtight container, for moving the movable contact point to and from the fixed contact points, and a metal member for ensuring airtightness of the airtight container. The metal member has one end fixed to the airtight container and the other end fixed to the movable shaft and is extensible and contractible in accordance with the movement of the movable shaft. Moreover, the breaker includes a lever unit for moving the movable shaft between a closed position where the movable contact point is in contact with the fixed contact points and an open position where the movable contact point is separated from the fixed contact points.

Breaker

This electromagnetic switching device comprises an electromagnetic devicein which a movable corecomes into contact with or separates from a fixed corein response to energization of an excitation coilwound around a coil bobbina contact devicewith a fixed contactand a movable contact which comes into contact with or separates from the fixed contact in conjunction with a movement of the movable coreof the electromagnetic device, and a boxy caseconfigured to house the electromagnetic device and the contact device. The coil bobbinhas a flangeat its end in an axis direction of the coil bobbin, and the casehas, on its inner surface, a recessinto which a periphery of the flangeof the coil bobbin is fitted, and a cushioning memberfor absorbing an impact which is transmitted from the electromagnetic device to the case is disposed in the recess, and the flange of the coil bobbin is supported by the recess through the cushioning member whereby the electromagnetic device is supported in the case.

Electromagnetic switching device

A contact device including a pair of fixed terminalswith a fixed contacteach, a movable armaturewith movable contactswhich contact to or separate from the fixed contacts, a movable shaftconnected to the movable armatureat its one end, a movable coresecured to the opposite endside of the movable shaft, a movable core receiverslid onto the movable shaftso that it faces a surfaceon the movable armature side of the movable coreto receive the movable coredriven by an electromagnetic mechanism, an impact absorberdisposed on a surfaceon the movable armature side of the movable core receiverto absorb an impact generated when the movable corehit the movable core receiver, and a stopper(a movement restriction member) disposed on a surface on the movable armature side of the impact absorberto restrict a movement of the impact absorber

Growing community of inventors

Mie, Japan

Katsuya Uruma