Abstract: In a portable terminal, a plurality of operation keys 7 are formed in a key through hole, which is formed in a housing main body that covers a printed board 15, by partitioning a stainless steel sheet 26 (a key sheet) by slits 26a. A urethane sheet 28 is attached to the rear side of the stainless steel sheet 26, where the urethane sheet 28 has ridge portions 28a that bulge out through the slits 26a to the front side of the stainless steel sheet 26, and the rear sides of the ridge portions 28a have groove-like openings. A rubber layer 29 is attached to the rear side of the urethane sheet 28, where the rubber layer 29 has a plurality of protruding portions 23 that protrudes toward a substrate 25 at positions corresponding to a plurality of fixed contacts 16 over the substrate 25. LEDs (light emitting means) and a light guide sheet 21 are disposed closer to the substrate than the rubber layer 29 is.

Abstract: A switching mechanism for a switching device is disclosed. In at least one embodiment, the switching mechanism includes a contact element which is mounted in a switching shaft segment such that it can rotate and can be switched off automatically in the event of a fault via said switching mechanism, a switching lever for switching the contact element on and off manually; a cocking lever which is mounted in a fixed position such that it can rotate and interacts with a catch; and a toggle lever joint including a coupling lug for connection to the contact element, a pivoting lever and a toggle lever joint shaft. The switching lever can assume at least one switched-on position, a manual switched-off position or automatically unlatched tripped position, or an intermediate switch position which is located between the switched-on position and the tripped position when a contact element is welded.

Abstract: An apparatus for preventing withdrawing and insertion of a carriage of a circuit breaker is disclosed. When a circuit breaker main body is inserted, an interlocking unit operates by interworking with the carriage withdrawing and inserting preventing apparatus, and while the circuit breaker is being closed, a withdrawal and insertion handle prevents a lead screw from being rotated by the interlocking unit. Thus, when the circuit breaker performs a closing operation, unnecessary withdrawing and inserting operation of the carriage is basically prevented to thus prevent various safety accidents, a contact resistance, a temperature increase, and damage to a device resulting from a breakdown.

Abstract: An electric tool switch has an operation member turnable in both directions and biased to self-return to a neutral position, a circuit substrate arranged to be orthogonal to a turning shaft of the operation member, a slidably moving element which is pressed against the circuit substrate and which is turned with the operation member to slidably contact the circuit substrate, and an inversion mechanism for switching a polarity between output terminals according to the turning direction of the operation member from the neutral position. The circuit substrate is formed with two sets of variable resistor circuits, which close a circuit when the slidably moving element slidably contacts and which resistance value changes according to a contacting position of the slidably moving element, electrically connected in parallel on both sides in the turning direction from a position corresponding to the neutral position of the operation member.

Abstract: Disclosed is a micro switch having a high capability of cutting off a direct current. In the micro switch including a stationary contact, a movable contact having a closed position where it contacts the stationary contact or an open position where it is separated from the stationary contact, a movable contact rod for supporting the movable contact, a plunger for pressurizing the movable contact rod upon being pressed, and a leaf spring for supplying a driving force to the movable contact rod to convert a position of the contacts being contacted or separated, a permanent magnet is installed at a position adjacent to the movable contact and the stationary contact, so as to extend an arc generated between the movable contact and the stationary contact upon separating the movable contact from the stationary contact, whereby the arc can be fast extinguished.

Abstract: A low cost cam mechanism facilitating an automatic shut off mechanism preserving battery life in a toy. A rotatable cam including a recess captures an internal actuator and completely shuts down a motor at a defined cam rotation to preserve the battery life in the toy. A resetting biasing lever coupled, to a manually operable actuator advances the cam and is then moved from engagement so as to completely shut down the motor at the defined cam rotation even if the manually operable actuator continues to be depressed. Further Thusly the internal actuator 18 facilitates limited activations of the motor for automatically shutting off a rotating cam mechanism to prevent repetitive continued operation. Further the internal actuator may provide powering up the motor and rotating the cam for “try me” operation for limited demonstrative operations of the toy while packaged or configured in a point of sale environment.

Abstract: A monitored SCADA Ready Field Test (FT) Switch is disclosed. The monitored switch relates to the incorporation of a monitoring switch for each switch unit in a FT switch to monitor the position of the corresponding switch unit and the FT switch, generally.

Abstract: Disclosed is a withdrawable device of main circuit for a circuit breaker. A ring-shaped guide recess is formed at a central part of a transfer nut screw-coupled to a lead screw, and supporting surfaces are formed on side surfaces of the guide recess. And, rotation prevention pins are elastically supported by springs in a moving direction of the transfer nut, and are selectively locked, thereby allowing the transfer nut to perform an idle operation. Accordingly, a structure for an idle operation of the transfer nut is simplified, and the number of components is reduced. An axial load is attenuated to a plane-contact distributed load, not a point-contact concentrated load, thereby preventing damage of the components. Also, a vacuum circuit breaker has enhanced reliability of the idle operation at a run position and a test position.

Abstract: The present application provides a key assembly for use in an electronic device. The key assembly comprises a plurality of dome switches and one or more single-piece keycaps. Each keycap has a plurality of key portions separated by deforming portions. The key assembly further comprises a plurality of actuators for activating the dome switches. Each actuator has a stem portion and an enlarged rigid blocking portion. The key assembly also comprises one or more rigid blocking members disposed between the blocking portion of the actuators and the keycaps and in close proximity to the blocking portion of the actuators. The blocking members form a barrier to limit a rotational movement of the actuators away from the dome switches.

Abstract: A vacuum cartridge (1) is manufactured with a dielectric coating (22) made from elastomer directly on the enclosure of the chamber (2) of the cartridge (1). To prevent the elastomer from infiltrating into the chamber (2) of the cartridge and/or its enclosure from breaking, cover-plates (26) performing mechanical protection and dielectric deflection cover the covers (61, 62) of the chamber (2) and their braze (8) with the ceramic tube (4).

Abstract: The present invention relates to a railroad toggle switch for a plurality of switching positions, the toggle switch comprising a housing, an operating lever supported on the housing and having a pivot axis, a switching cylinder supported on the housing and having a rotational axis, a plurality of microswitches and an engaging mechanism for engagement of the operating lever in the switching positions. The switching cylinder is here provided with a plurality of cam disks for operating the microswitches. According to the invention the pivot axis of the operating lever is located in the area of the housing top side and is different from the rotational axis of the switching cylinder, the operating lever being in engagement with the switching cylinder.

Abstract: A pressure switch (100) having a housing (101) and a connector (106) coupled to the housing (101) is provided. The housing (101) comprises a first chamber (212) and a second chamber (213). The first and second chambers (212, 213) are separated by an integrated diaphragm (102). The integrated diaphragm (102) has a first side (210) and a second side (211). The integrated diaphragm (102) flexes in response to a pre-determined pressure acting on the second side (211). A first bushing (103) is inserted into the first chamber (212) of the housing (101) and coupled to the first side of the integrated diaphragm (102). The connector (106) comprises one or more electrical contact members (219) and at least one switch (105), the at least one switch (105) communicates with the first side (210) of the integrated diaphragm (102).

Abstract: A dual function switch assembly includes a switch housing part containing multiple switches at different elevations and a rotor having cam surfaces aligned with the switches for operating the switches. A mounting part is connected to the switch housing part and provides mounting features for attachment in a desired installation.

Abstract: A support member for supporting a key cap, a keyswitch and a keyboard with the support structure are disclosed. The support member includes a first subunit and a second subunit. The first subunit includes a first arm which includes a first pivoting part at one end. The second subunit includes a third pivoting part connected to the first pivoting part temporarily. Therein, a second arm and a third arm are bended to extend from two ends of the third pivoting part respectively. There is a second position structure at an end of the second arm, and there is a third position structure at an end of the third arm. The second position structure and the third position structure can be connected to two first position structures on a base plate respectively. The distance between the second position structure and the position fixing structure is longer than that between the two first position structures.

Abstract: A one-touch stop-lamp switch of a vehicle can contribute to reducing manufacturing costs of a vehicle and ensuring stable and durable quality by quickly and simply mounting the stop-lamp switch at an appropriate position with respect to a brake pedal and stably maintaining the position.

Abstract: A key structure and a keyboard including multiple key structures are provided. The key structure includes a keycap, a base plate and a scissors-type support member between the keycap and the base plate. The scissors-type support member includes an inner frame having a convex part and an outer frame having a recess. The convex part is accommodated within the recess. By controlling relative positions between the convex part and the recess, the keycap is stably moved in the vertical direction.

Abstract: A concavo-convex light emitting section provided on an under surface of a base material is formed of a synthetic resin with inorganic oxide dispersed therein. A larger amount of light is reflected by inorganic oxide having a large refractive index and dispersed inside the synthetic resin, to cause a plurality of light emitting sections to emit bright light with a small number of light emitting elements. A light guiding sheet capable of making bright and uniform illumination and a movable contact body using the same are realized with a simple configuration.

Abstract: Disclosed are an elastic pressing unit and a molded case circuit breaker having the same, the molded case circuit breaker including, a plurality of fixed contacts, a plurality of movable contacts disposed to be rotatable between a closing position contacted with the corresponding fixed contacts and a breaking position or trip position separated from the corresponding fixed contacts, a rotation pin disposed to be simultaneously connected to the movable contacts, a mechanical unit connected to the rotation pin so as to allow the movable contacts to be simultaneously rotatable, and an elastic pressing unit configured to apply an elastic force to the rotation pin such that the rotation pin is rotated toward the closing position, whereby component deformation can be prevented, resulting in ensuring operation reliability and stability of the mechanical unit.

Abstract: The invention relates to a switching distribution board (1), comprising a number of m input contact pairs (2) and n output contact pairs (16), it being possible for an input contact pair (2) to be connected to any desired output contact pair (16) by a mechanical switching mechanism, the mechanical switching mechanism being driven by at least one motor (5).

Abstract: A membrane switch can attach an elastically deformable dome to a board in a reliable manner such that the dome is not detached even if a fixing sheet is made thinner and smaller and therefore has a smaller footprint. This switch has: a dome (110) that is formed projecting toward the surface and that is dented opposite toward the back surface by elastic deformation; and a flexible fixing sheet (120) that has a back surface of an adhesive face pasted to the entire face of the surface of the dome (110). The fixing sheet (120) fixes the dome (110) in a predetermined position of a board (4) by means of a stretching part (122) which stretches radially outer to the dome (110), from an outer rim (112) of the dome (110), in a direction virtually orthogonal to a direction in which the dome (110) projects.