Abstract: Provided herein is technology relating to providing power over a universal serial bus (USB) connection and particularly, but not exclusively, to devices, methods, and systems related to a (USB) technology for reducing energy consumption by a USB receptacle.

Abstract: Printed circuit boards (PCBs) may include embedded lateral connectors. The embedded lateral connectors may be configured to enable components to quickly couple to or plug into a PCB, thus saving time to form connections. The embedded lateral connectors may also reduce weight and/or size by avoiding need for bulky tradition collections with conventional components (e.g., solders, external pin connectors, etc.). The connectors may include male connectors, female connectors, and/or mounting connectors. The connectors may be configured to connect multiple PCBs together, such as using a stacked configuration, which may enable reducing a volume of space needed in a housing for the PCBs.

Abstract: This invention discloses an information robot apparatus, comprising a robot body, a plug body, a socket body, a plug groove arranged in one end face of the socket body, a first sliding cavity communicated with the plug groove, a second sliding cavity communicated with the extending tail end of the first sliding cavity, a third sliding cavity arranged in the socket body. Wherein the tail end of the bottom of a rotating shaft extends into the third sliding cavity and is fixedly connected with the tail end of the top of an adjusting threaded rod. Therefore, it is convenient to quickly plug in and take out after disconnection with power; meanwhile, the automatic control of the power supply and the disconnection with power before taking out can be realized, so that the operation safety is greatly improved.

Abstract: The present application describes a connector assembly, a circuit board assembly, a cable assembly and to a method of manufacturing a connector assembly. A connector assembly comprises a shroud; and a plurality of co-axial radio frequency connectors at least partially received in the shroud such that the shroud extends around each radio frequency connector and between adjacent radio frequency connectors. The shroud comprises at least one piece of radiowave absorption material arranged to absorb radio frequency energy leaking or dispersing from the radio frequency connectors in use. Another connector assembly comprises a body, a plurality of radio frequency connectors at least partially received in the body, and a conductive foil integrally formed with the body and partially extending beyond the body.

Abstract: A connector position assurance (CPA) device for assuring the full engagement of a female connector assembly and a male connector assembly in a connector apparatus, and the connector apparatus having the female connector assembly and the male connector assembly engaged together when the CPA device is at a full-lock position. Prior to the CPA device being at a full-lock position, the female connector assembly, with the CPA device at a pre-lock position therein, enters the male connector assembly for engagement thereto. At such time, protruding members of a flexible member of the female connector assembly enter a side elongated slot of the male connector assembly.

Abstract: A method of forming a shield terminal from sheet metal having a tubular first portion having a single seam and aligned with a first axis and a second tubular portion having two seams radially opposed to one another and aligned with a second axis that is oriented at a right angle to the first axis, an inner insulator disposed within the shield terminal, and an outer housing defining a cylindrical cavity in which the tubular first portion of the shield terminal is disposed. Edges of the single seam and edges of the two seams are joined solely by the disposition of the tubular first portion in the cylindrical cavity. The shield terminal formed by this method is also presented.

Abstract: A test coaxial connector has a probe portion with a small height, and prevents breakage of a switch-equipped coaxial connector even when the test coaxial connector is not properly fitted to the switch-equipped coaxial connector. The test coaxial connector includes a housing and a probe housed in the housing. The probe is formed of one continuous structure having elasticity, the structure including a contact at or near an end portion of the structure and including, at or near another end portion of the structure, a connection portion to which a central conductor of a coaxial cable is to be connected.

Abstract: An electrical receptacle including a body having a plurality of electrical connections, a device face connected to the body and movable with respect to the body, a plurality of electrical plug contacts positioned behind the device face, and wherein the electrical plug contacts retain an electrical plug prong at a first tension when the device face is in a first position and the electrical plug contacts retain the electrical plug prong at a second tension when the device face is in a second position.

Abstract: A contact element for electrically connecting an electrical conductor with an electrical assembly includes two contact rails extending in a longitudinal direction. The rails are arranged one above the other and are at a distance from one another in a contact direction and are also connected to each other via a connection piece. The connection piece is arranged at a first side of the contact rails and extends in the longitudinal direction and in the contact direction so that the contact element is formed in an approximately U-shaped manner in a cross section transversely to the longitudinal direction which runs through the connection piece.

Abstract: An electrical plug connector includes a plug insulated housing, first plug terminals, and second plug terminals. The plug insulated housing includes a bottom wall, a first side wall, a second side wall, and two end walls connected to the first side wall and the second side wall to enclose an insertion cavity. First plug-terminal assembling portions are on the first side wall. Second plug-terminal assembling portions are on the second side wall. The first plug-terminal assembling portions correspond to the second plug-terminal assembling portions in a one-to-one manner. The first plug terminals include one or more pair of first plug signal terminals. The second plug terminals include one or more pair of second plug signal terminals. The pair of the first plug signal terminals is shifted relative to the pair of the second plug signal terminals along a transversal direction.

Abstract: An electrical connector comprises a contact, a housing retaining the contact, and a lock arm configured to catch a mating connector. The lock arm has an arm main body integrally formed with the housing and a releasing operation portion formed separately from the housing and attached to the arm main body.

Abstract: A housing (12) of a board connector (10) to be connected to a circuit board (P) is disposed such that a connection surface to a mating connector (50) is exposed to outside through an opening (41) of a case (40) capable of accommodating the circuit board (P) inside. The housing (12) includes outer locking protrusions (31) for locking a peripheral edge part of the opening (41) of the case (40) from outside of the case (40) so that the board connector (10) will not displace into the case (40) due to forces exerted by a mating connector (50) during a connection operation.

Abstract: An electronic device adapted to be detachably assembled to a lamp holder having a lamp socket is provided. The electronic device includes an adaptor module and a functional module. The adaptor module includes a lamp connector corresponding to the lamp socket, a first connector electrically connected to the lamp connector, and a first engaging member adjacent to the first connector. The functional module includes a second connector and a second engaging member. The second engaging member of the functional module is detachably connected to the first engaging member of the adaptor module. When the functional module is assembled to the adaptor module, the second connector is electrically connected to the first connector.

Abstract: A remote controlled extension cord. The extension cord has a wire attached to a plug with an integrated base. The base serves to cradle a remote control, which is used to turn power on/off to the extensions on the cord. The extension cord has a number of advanced operations, for example a sequential flash operation which cycles power between all of the individual sockets in the extension cord in sequence, and then repeats the sequence. This can all be controlled by the remote control.

Abstract: A cutaneous medical device having a main part containing an electrical energy source that can generate an electric current and electronic components that form part of an electric circuit; and at least one removable cutaneous electrode comprising an electric plug. The electrode is intended to be in electric contact with a user. The electrode also includes at least one base which is positioned on a first face of the main part and can be electrically connected to the at least one removable cutaneous electrode.

Abstract: A safety socket includes a main body, a first and second conductive seat, a first and second electric connection plates, a first and second insulated member and a first and second conductive plates. A first and second position block projects outwardly from first and second chambers of the main body. The first conductive seat includes a first clamp couch having two first clamp arms, one of which is formed with a first recess permitting extension of the first position block. The second conductive seat includes a second clamp couch having two second arms, one of which is formed with a second recess permitting extension of the second position block. The present safety socket has lesser components, easy to assemble and low in manufacturing cost, double safety measures. Addition of a switch device enhances the anti-shock effect and prevents occurrence of electrical discharge phenomenon and/or arc light phenomenon.

Abstract: A plug connector for connection with a mating connector in a plugging direction comprises a plug housing having a receptacle and a short circuiting bridge held in a plugging position in the receptacle. The short circuiting bridge has a pair of short circuiting contacts accessible from outside the plug connector counter to the plugging direction. The short circuiting bridge is movable about the plugging position within the receptacle.

Abstract: A plug comprises power contacts and a trip jumper having jumper contacts configured to make a trip connection, during a plugging action with the plug and a receptacle, with mating trip contacts in the receptacle. When the receptacle is connected to electrical power during the plugging action, a current over the trip connection can cause disconnection of a receptacle power contact from the power. A receptacle comprises receptacle power contacts and a trip circuit having receptacle trip contacts configured to make a trip connection, during a plugging action with the receptacle and plug, with mating trip contacts in the plug. When the receptacle is connected to electrical power during the plugging action, a current over the trip connection can cause disconnection of power to a receptacle power contact. A system can have an electrical device with a line cord connected to the plug.

Abstract: A method of provisioning cards in a rack mount system, by selecting a desired configuration file from a library of configuration files, and copying the configuration file into a memory device. The memory device is inserted into the rack mount system and powered up. Whereupon the configuration file automatically and without any further user intervention provisions a card of the rack mount system.

Abstract: A connector with self-powered mating detection is disclosed. An example disclosed connector pair includes a first connector. The example connector pair also includes a piezoelectric sensor attached to the first connector. The example piezoelectric sensor generates a voltage when the first connector and a second connector are mated. The example piezoelectric sensor generates a voltage when the first connector and a second connector are unmated. The example connector pair also includes a memory circuit electrically coupled to the piezoelectric sensor to record a connection event in response to detecting voltage generated by the piezoelectric sensor(s). Additionally, the example connector pair includes an RFID circuit electrically coupled to the memory circuit. The example RFID circuit transmits the connection events.

Abstract: A method of providing a telecommunications service using a network interface device (NID) is provided. The method includes connecting a provider line to one or more protector assemblies connected to a ground bar and configured to conduct current surges from the NID to ground. The one or more protector assemblies are electrically connected to an insulation displacement connector (IDC) module. An outgoing jack module wire is connected to the IDC module by inserting the outgoing jack module wire into a wire insertion hole of the IDC module to receive signals from the provider line. The outgoing jack module wire is electrically connected to a jack module outside the NID thereby providing a demarcation point. An incoming jack module wire is electrically connected to the jack module for carrying signals back to the NID.

Abstract: An electrical connector matable to and unmatable from a separable mating electrical connector includes a housing having a terminal channel and an auxiliary terminal channel with a power terminal received in the terminal channel and an auxiliary power terminal received in the auxiliary terminal channel. A TPA device is movably coupled to the housing between an open position and a blocking position for blocking removal of the power terminal from the terminal channel. A protective thermal coupler is held by and movable with the TPA device. The protective thermal coupler has a variable resistive member electrically coupled between the power terminal and the auxiliary power terminal. The variable resistive member provides a shunt so that arcing does not occur when the power terminal is disconnected from the mating power terminal of the mating electrical connector.

Abstract: Technologies are described for an audio jack housing configured to concentrically align with an opening in a chassis of a computing device and to accept a plug associated with external audio components. When the housing is aligned with the opening, a snout of the audio jack housing abuts an interior surface of the opening and does not protrude into the opening. The chassis where the opening is located may be constructed from a plastic material to reduce a risk of shorting-out when a metal plug is inserted into the housing. The chassis may include alignment features to concentrically align the audio jack housing with the opening during assembly, such that interior edges of the opening and interior edges of the snout are flush creating a smooth interior entry into the audio jack housing through the opening and the snout.

Abstract: A lever-type connector (10) includes a lever (40) provided with a cam groove (41), a first housing (30) having the lever (40) movably mounted thereon, and a second housing (60) provided to be connectable to the first housing (30). The second housing (60) includes a lever shaft (64) movable along the cam groove (41) according to a movement of the lever (40), a lever fitting portion (72) to which a peripheral edge part of the lever (40) is fit, and a bracket mounting portion (66) disposed behind an entrance space (71) for the lever (40) and provided with a locking claw (67). The locking claw (67) is disposed between the lever shaft (64) and the lever fitting portion (72) when the second housing (60) is viewed from a connecting direction.

Abstract: A connector includes a housing that holds a plurality of terminals and a mating housing that holds a plurality of mating terminals to be connected to the terminals. The mating housing is fitted into the housing to connect the mating terminals to the terminals. The housing comprises a partition wall portion which projects ahead of the terminals and separates adjacent ones of the terminals from each other.

Abstract: A system comprises a plurality of nodes connected in a peer-to-peer network via a communication interface. At least one node of the plurality of nodes comprises a transceiver, at least two connectors, at least one termination resistance module coupled to the transceiver, the at least one termination resistance module providing termination resistance within the node, a first detection circuit coupled to a first connector of the at least two connectors, and a second detection circuit coupled to a second connector of the at least two connectors. The first and second detection circuits are configured to detect that the node is coupled to one or more other nodes in the peer-to-peer network, and automatically adjust the termination resistance based on the detecting.

Abstract: A cable connector comprises a housing, a conductive element fixed on the housing and connected with the cable, an elastic piece adjacent to the conductive element, detective and switch terminals fixed on the housing and connected with a pressing plate. The pressing plate is rotatable between a first position and a second position. When the pressing body is abutted at the first position by the elastic piece, a receiving gap between the elastic piece and the conductive element is closed to prevent the cable from entering, and the pressing body is abutted against the switch terminal to define a first conductive state. When the pressing body is at the second position, the receiving gap is opened to receive the cable, and the pressing body is disengaged with the switch terminal, to define a second conductive state. A connection state can be known by detecting the first and second conductive states.

Abstract: A connector includes: a short circuit terminal housed in a first housing and having contact pieces contacting with adjacent first terminals of a plurality of first terminals respectively with the first housing and a second housing not being engaged with each other; and a releaser provided in the second housing and configured to displace the contact pieces and release contact between the adjacent first terminals and the contact pieces upon engaging of the first housing and the second housing. The contact pieces include: contact portions contactable with the adjacent first terminals respectively; and slide portions slidable on the releaser and respectively arranged in positions anterior to the contact portions in an engaging direction of the first housing and the second housing. The contact portions are apart from the releaser with the contact pieces being displaced due to slide of the slide portions on the releaser.

Abstract: A telecommunications plug includes a housing having an insertion portion sized to be received in a telecommunications jack, and a circuit board at least partially disposed within the housing. The circuit board includes a plurality of contacts exposed through the insertion portion to electrically connect to contact springs of the telecommunications jack and a plurality of wire connections receiving wires of a telecommunications cable. The plug further includes a switching mechanism movable relative to the circuit board and configured to switch between first and second positions, wherein the first and second positions selectably provide capacitive crosstalk between wire pairs within the plug.

Abstract: The present invention provides an apparatus including: a macrobending injected-light modulation and control module, configured to modulate an injected optical signal according to a port identifier of each first port and inject the injected optical signal to an optical fiber connected to the first port; a macrobending signal detection module, configured to receive a received optical signal at a second port of an optical transmission path; a phase-locked detection module, electrically connected to the macrobending injected-light modulation and control module and the macrobending signal detection module, and configured to: when an injected optical signal that is injected by the macrobending injected-light modulation and control module to an optical fiber is consistent with a received optical signal that is acquired by the macrobending signal detection module, acquire and output port identifiers of a first port and a second port.

Abstract: A device and a method for integrating at least one electrical element into an electrical circuit during ongoing operation of the electrical circuit. In addition, a meta module for dynamic extension of an electrical circuit is possible to add any desired number of electrical elements.

Abstract: The invention relates to a grounding clip for an airbag ignition system adapted to be mounted to an airbag retainer insert. The clip comprises a first grounding contact in form of a spring tongue adapted to contact a grounding contact of a squib connector and a second grounding contact adapted to contact an electroconductive part of an airbag squib. The clip comprises a flat base connecting the first and second grounding contacts with each other, wherein the spring tongue has a straight portion that extends perpendicular from the flat base and wherein the free end of the spring tongue comprises a bent portion that is not perpendicular to the base.

Abstract: A connector includes at least two terminal fittings, a connector housing including terminal accommodating chambers which respectively accommodate the at least two terminal fittings, and a shorting terminal electrically connecting the at least two terminal fittings to each other. An electrical connection of the at least two terminal fittings is released by a mating connector which is fitted on the connector. Abutment portions provided at front ends of shorting contact pieces of the shorting terminal project from a front surface of the connector housing. A front surface of the mating connector facing a front surface of the connector housing presses against the abutment portions and deflects the shorting contact pieces in a rear direction of the connector so as to release shorting of the at least two terminal fittings.

Abstract: A connector includes a first housing, a second housing, a short-circuiting terminal, and a release portion configured to release contact between the first terminals and the contact pieces. The contact piece includes a contact portion provided to be in contact with the first terminal, and a sliding protrusion protruding from the contact portion in a direction intersecting a fitting direction of the housings. The release portion includes a sliding slope sliding on the sliding protrusion to displace the contact piece, a support portion continuously provided with the sliding slope, the support portion coming into contact with the sliding protrusion and holding the contact piece is displaced in a state, and a contact housing portion arranged from the sliding slope and the support portion in a direction crossing a fitting direction of the first housing and the second housing, the contact housing portion housing the contact portion the fitted state.

Abstract: A coaxial connector assembly is described herein. The coaxial connector assembly includes an inner contact that is configured to terminate a center conductor of a coaxial cable, an insulative inner sleeve holding the inner contact, a tubular outer contact surrounding the inner sleeve and the inner contact, said outer contact configured to terminate a shield braid of the coaxial cable and an insulative cylindrical outer sleeve defining a central cavity extending longitudinally therethrough in which said outer contact is disposed. The cavity has an opening configured to receive a corresponding coaxial connector. A lip on a forward end of the outer sleeve extends into the opening such that a forward edge of the outer contact is not exposed within the opening. The coaxial connector assembly may be configured to meet the FAKRA connector standards.

Abstract: A connector assembly having a housing configured to hold a plurality of electric connections of different sizes is provided. The connector assembly includes a housing having a plurality of first through-holes and a plurality of second through-holes. The housing includes a plurality of first terminal housings and a plurality of second terminal housings. The first terminal housings are spaced apart from each other so as to define a first axial slot. The terminal positioning assurance includes a spacer configured to be inserted within the first axial slot so as to maintain a fixed spatial relationship between the first terminal housings, the spacer is closed by a terminal housing, so as to prevent water from infiltrating into the first through-holes.

Abstract: A connector includes: a housing; terminals inserted in the housing from a first side of the housing; a short circuit terminal inserted in the housing from a second side of the housing, having contact pieces configured to contact the terminals respectively, and connecting the terminals to each other; and a front holder attached to the housing from the second side of the housing, configured to retain the terminals in the housing, and having a displacement portion. The displacement portion of the front holder attached to the housing displaces the contact pieces of the short circuit terminal inserted in the housing with the terminals not inserted in the housing, by a prescribed distance in a direction of separating the contact pieces from the terminals.

Abstract: A connector part which is a female connector part for engagement with a male connector part having a pin. A connector body has a front portion with an opening for receiving a pin of a male connector part. A chamber inside the connector body is filled with dielectric liquid. A shuttle pin is configured to seal the opening in the front portion of the connector body when the connector part is in a de-mated state. The shuttle pin is moveable rearwardly into a rear portion of the connector body during mating. The first latching mechanism latches the shuttle pin to the pin of the male connector part during mating. A second latching mechanism in the rear portion of the connector body inside a fluid-filled chamber latches at least one of the shuttle pin or the pin towards the connector body in a mated state.

Abstract: A socket connector includes a first connection terminal and a second connection terminal that come into electrical contact with a plug connector, and a socket housing having an insertion opening for the plug connector. The first connection terminal is provided with a switch contact piece and a terminal body that comes into electrical contact with the plug connector. The switch contact piece has an opening contact point portion that comes into pressure contact with the plug connector, a short-circuit contact point portion, and an elastic arm that elastically supports the opening contact point portion and the short-circuit contact point portion and that is elastically deformed when the opening contact point portion is pressed by the plug connector, and thereby brings the short-circuit contact point portion out of contact with the second connection terminal.

Abstract: An modular antenna for integration with an Internet of Things (IoT) hub and associated systems and methods. For example, one embodiment of an apparatus comprises: a modular antenna to be used with an embedded Internet of Things (IoT) hub having a plurality of wireless communication interfaces, the modular antenna comprising an interface component and an antenna component; the interface component comprising a first plurality of pins or pads to electrically couple the module antenna to the embedded IoT hub; and the antenna component comprising a plurality of antennas to be electrically coupled to the first plurality of pins or pads, thereby electrically coupling each of the plurality of antennas to one of the plurality of wireless communication interfaces of the embedded IoT hub.

Abstract: A high-voltage insulator has an insulating body which is arranged around a high-voltage conductor. The high-voltage insulator has a damping chamber which at least partially engages around the insulating body and which is filled with an electrically insulating damping medium for damping an action of external mechanical force on the insulating body. A transformer bushing for routing a high-voltage conductor out of a transformer housing in an electrically insulating manner is further disclosed. The transformer bushing is characterized in that the transformer bushing contains a high-voltage insulator.

Abstract: An intelligent network patch field management system is provided that includes active electronic hardware, firmware, mechanical assemblies, cables, and software that guide, monitor, and report on the process of connecting and disconnecting patch cords plugs in an interconnect or cross-connect patching environment. The system is also capable of monitoring patch cord connections to detect insertions or removals of patch cords or plugs. In addition, the system can map embodiments of patch fields.

Abstract: A method, system or computer usable program product for controlling power emission from a socket to a plug including providing a first unit connected to the socket with full power emission disabled and a second unit connected to the plug, each unit with a signal generation capability, establishing a handshake protocol between the first and second units, and responsive to a successful handshake protocol between the first and second units, the first unit enabling full power emission from the socket to the plug.

Abstract: A compound and securable key is disclosed in the present invention. It includes a printed circuit board, a fingerprint sensor, a micro control unit, and a housing. The present invention provides a key structure with combination of a physical key patterns and biometrics for identification. The key is convenient to carry, difficult to duplicate. It is also has advantages such as low cost, easy use, and compact size of biometric module. The invention enhances security of keys.

Abstract: A high-profile electrical connector includes a terminal module, a metallic shell and a metallic supporting member. The terminal module has an insulative housing and a plurality of conductive terminals. The insulative housing has a base portion provided with a mounting face and an insulative mating portion. The conductive terminals have contacting portions and connecting legs. The metallic shell shielding around the terminal module has a metallic mating portion surrounding around the insulative mating portion and a plurality of printed circuit board mounting legs. The metallic mating portion has a lower face which is higher than the mounting face. The metallic supporting member has a supporting plate used for supporting the lower face and at least a supporting leg extending downwardly. The supporting plate is higher than the mounting face so that the supporting plate is spaced from an upper surface of the printed circuit board.

Abstract: The present invention relates to an electrical plug connector for a safety restraint system, preferably for an airbag ignition system. The plug connector includes at least two contact terminals assigned to the plug connector and a shorting clip that is configured to short-circuit the at least two contact terminals in an uncoupled or incorrectly coupled condition of the plug connector. The shorting clip includes at least two contact blades. Each contact blade is electrically connected with one of the at least two contact terminals. Each of the contact blades includes at least one cutting edge. The cutting edges contact each other such that one edge cuts the other when the plug connector is in an uncoupled or incorrectly coupled condition.

Abstract: A connector assembly and system assembling an electric connector assembly are provided. The connector assembly includes a connector housing having a plurality of terminal cavities greater than the predetermined number of electric connections so as to define an empty terminal cavity and a filled terminal cavity. The connector housing further includes a blocking member. The blocking member is the blocking member disposed within each of the empty terminal cavities. Accordingly, the blocking member closes off each of the empty terminal cavities so as to prevent fluid transfer between the terminal positioning assurance member and the connector positioning assurance member so as to prevent fluid and debris transfer between the terminal positioning assurance member and the connector positioning assurance member, or stated in another way, prevents fluid and debris transfer between the first open end and the second open end.

Abstract: An illuminated modular decorative article includes a base control panel and a side panel. The base control panel includes a base, a first electrical/mechanical connection interface, and a power source. The side panel includes a base, a second electrical/mechanical connection interface, and illumination sources. The first electrical/mechanical connection interface connects to the second electrical/mechanical connection interface to electrically connect the base control panel to the side panel and to mechanically connect the base control panel substantially orthogonally to the side panel.

Abstract: Embodiments disclose an electrical connector comprising a contact part including a sleeve enclosing a receiving space; a contact spring; and a locking pin including an axial end protruding laterally beyond the sleeve, the locking pin configured to be displaceably guided in the sleeve between a first final position and a second final position, be in contact with the contact spring, and push the contact spring towards the receiving space to a degree depending on a position of the locking pin between the first and second final positions; and a housing surrounding the contact part, the housing including a securing element configured to be selectively movable or fixed relative to the sleeve, grip the at least one axial end of the locking pin to form a locked connection, and selectively move the locking pin during a movement relative to the sleeve or fix the locking pin relative to the sleeve.

Abstract: Provided is a switch attached coaxial connector that improves an isolation characteristic between a common terminal and a closed terminal. In a normal state where a coaxial plug is not connected to the switch attached coaxial connector, a movable contact portion biased by a leaf spring piece portion elastically contacts a fixed contact piece portion so that a closed terminal and a common terminal are electrically connected to each other. When the coaxial plug is connected to the switch attached coaxial connector, the movable contact portion moves rearward from the fixed contact piece portion by the plug pin abutting against a plug contact portion so that the contact with respect to the fixed contact piece portion is disconnected and the electrical connection of the common terminal is switched from the closed terminal to the plug pin.