Matsushita Electric Works, Ltd.

Other

Kazuhiro Nobutoki

Kenji Ono

Hiroshi Kawada

Hitoshi Yoshida

Kazuaki Nishimura

Jun Ogihara

Shigeaki Tomonari

Masanao Kamakura

Masaaki Saito

Hiroyuki Kita

Shuichi Nagao

Hans Sauer

Toyotaka Nishikawa

Masanori Motoyama

Takanori Sugiyama

Yoshihiro Mihara

Keiji Okahashi

Fumihiro Kamitani

Osamu Matsui

Kyoji Ueda

Sueyoshi Matsumura

Shunsuke Egashira

Masafumi Nakagawa

An optical switch switches the light path between collimate lenses optically coupled to the ends of corresponding optical fibers by the advancing and retracting movements of a prism. The prism comprises an electromagnetic driver having an armature arranged to hold the prism, a coil block for driving the movement of the armature by use of magnetic actions and a leaf spring. The leaf spring mainly includes four parallelly extending spring strips fixedly joined at one end to a body and at another end to the armature to thus spatially hold the armature and the prism for linear movement. The electromagnetic driver and the prism are disposed next to each other along the moving direction of the armature. The armature and the prism can be linearly moved at a right angle to the light path between the lenses when the optical switch is in action. This allows the prism to be linearly moved, and the device can be minimized in overall size.

Optical switch

A flexible area is joined at one end via a thermal insulation area to a semiconductor substrate which becomes a frame and at an opposite end to a moving element . The thermal insulation area is made of a thermal insulation material a resin such as polyimide or a fluoridated resin. The flexible area is made up of a thin portion S and a thin film M different in thermal expansion coefficient. When a diffused resistor formed on the surface of the thin portion S is heated, the flexible area is displaced because of the thermal expansion difference between the thin portion S and the thin film M, and the moving element is displayed with respect to the semiconductor substrate

Semiconductor device

A permanent magnet is stood vertically at a position shifted on way off the central position of a central piece for a U-shaped iron core An armature has a projection as a fulcrum at an off-centered position so that the fulcrum is placed on an upper end face of the permanent magnet Also, a coil is wounded around a pole piece of the iron core on a near side to the central position.

Electromagnet driving apparatus and electromagnetic relay

An electromagnetic relay includes a yoke having both ends bent in first direction, a coil portion wound onto a central part between the ends of the yoke, a permanent magnet arranged between the ends of the yoke, an armature formed to have a greater length than that between the ends of the yoke and provided on the first side of the permanent magnet and a hinge spring capable of causing both end sides of the armature to be toggle with respect to the ends of the yoke, and the hinge spring integrally fixing the permanent magnet and the armature.

Electromagnetic relay

A miniature electromagnetic relay is capable of increasing the coil packing density, yet assuring electrical insulation of the coil from a core of the electromagnet. The relay includes a pair of movable and fixed contacts, an armature carrying the movable contact, and an electromagnet block having an excitation coil which moves the armature for closing and opening the contacts upon being energized. The electromagnet block includes a generally U-shaped core with a center core and a pair of yokes extending from opposite ends of the center core, flanges of dielectric material molded respectively around portions of the yokes, and a dielectric tape fitted around the center core over substantially the entire length of the center core to receive therearound the excitation coil in an electrically insulating relation from the core. Each of the flanges is formed integrally with an inward sleeve which extends over a limited length along the center core in such a relation that the dielectric tape overlaps the inward sleeves at opposite width ends of the tape. Thus, the coil can be wound over the substantially full length of the core and be successfully insulated from the core over the full length thereof without requiring additional separate member.

A polarized relay includes a coil block having an elongated coil bobbin, a core inserted therein, and an excitation coil wound about the coil bobbin. The core has opposed pole ends projecting upwardly from longitudinal ends of the coil bobbin. A permanent magnet is interposed between the pole ends on the coil bobbin. Disposed on the coil block is an armature block which comprises an elongated generally flat armature and a set of movable springs carrying movable contacts. The movable springs are held together with the armature by means of an electrically insulating harness molded on the armature. The armature is pivotally supported on the coil block to be movable between two contact operating positions and constituting a magnetic circuit with the core and the permanent magnet for polarized operation of the armature. A terminal assembly is provided to include coil terminals leading to the excitation coil and fixed contact terminals provided respectively with fixed contacts at contact ends of the contact terminals. The polarized relay is characterized in that the coil block and the terminal assembly are molded together from an electrically insulating material into a single integral base unit on which the armature block is assembled with the movable contacts held in an engageable relation with the fixed contacts.

Polarized relay

A polarized electromagnetic relay is designed to have a minimum height as less as that of an electromagnet block constituting one major part of the relay. The relay includes a base which is formed to receive the electromagnet block and to have a set of fixed contacts. The electromagnet block includes a generally U-shaped yoke with a pair of opposed legs connected by a center core and at least one excitation coil wound around the center core. An armature block is mounted within the base together with the electromagnet block and comprises an elongated armature extending over the opposed pole legs and pivotally supported for movement between first and second positions about a pivot axis. The armature block carries a movable contact for contact selectively with one of the fixed contacts in response to the armature movement between the first and second positions. The armature is magnetically coupled to the pole legs by means of a permanent magnet such that the armature block responds to polarity change in the current energizing the excitation coil to move between the first and second positions. The permanent magnet is disposed in the bottom portion of the base within the plane of the pole legs. The armature block is disposed above the permanent magnet in such a manner that the armature block and the permanent are stacked within the height of the electromagnet block.

Polarized electromagnetic relay

A polarized electromagnetic actuator device advantageous for single-stable armature operation comprises an armature pivotally supported for movement between two different angularly displaced positions about a pivot axis and an electromagnet with a pair of opposed pole members extending toward the ends of the armature on either side of the pivot axis. Disposed between the free ends of the opposite pole members is a bar-shaped three-pole magnetized permanent magnet which is magnetized to have end poles of the same polarity at the longitudinal ends and a center pole of the opposite polarity intermediate the ends, producing first and second flux paths opposing to each other and extending between the respective end portions of the permanent magnet and the adjacent end portions of the armature. The center pole is offset from the pivot axis of the armature to provide at a correspondingly offset portion therefrom between the armature and the permanent magnet a common flux path through which the first and second flux paths extend in the same direction, whereby producing a torque on the armature tending it to rotate about the pivot axis toward the one of the two angularly displaced positions.

Polarized electromagnetic actuator device

A polarized electromagnetic relay includes a flat-shaped armature pivotally supported at its center, an electromagnet with a pair of pole members extending toward the armature ends on either side of the center pivot axis, and a three-pole magnetized permanent magnet bridging between the pole members in generally parallel relation with the armature. A pair of movable contact springs extends along the lateral sides of the armature and joined at its center portion to the armature to be movable therewith. Integrally formed with each movable contact spring is a pivot arm which extends transversely from the center thereof and is fixedly secured to a relay casing. The pivot arm defines itself a resilient torsion element of limited deformability by which the armature is supported on the relay casing and is permitted to pivot about the center pivot axis for movement between the two angular positions.

An electromagnetic relay has a casing of electrically insulative material which is divided by an insulating partition into a coil space for receiving an electromagnet and a switching space for receiving a contact assembly. An armature is magnetically coupled to the electromagnet and is operatively connected to the contact assembly for switching contact operation thereof in response to energization of the electromagnet. The partition extends along the entire length of the electromagnet without leaving any communication path between the coil space and the switching space, such that the electromagnet in the coil space can be insulatively separated from the contact assembly in the switching space within the length of the electromagnet.

In an electromagnetic relay, an armature block serving to actuate contact springs includes a pair of armatures and a permanent magnet disposed therebetween to magnetize the armatures to opposite polarities. Pole ends of a yoke carrying the excitation flux created by the relay coil extend between free ends of the armatures. The armature block is suspended by means of a resilient arm integrally formed with the block at one side thereof and having its outer end fixed to a bearing portion, so that a rocking motion of the armature block is achieved by a flexing motion of the resilient arm.

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Mie, Japan

Kazuhiro Nobutoki