Abstract: A method of interconnecting first and second printed circuit boards using a float connector with a contact assembly that includes installing a first guide member onto the first printed circuit board with the float connector in an open non-compressed position, after installing the first guide member onto the first printed circuit board, installing a second guide member onto the second printed circuit board with the float connector in the open non-compressed position, and compressing the first and second printed circuit boards toward one another to move the float connector from the open non-compressed position to a compressed position until contact ends of the contact assembly of the float connector are exposed outside of the first and second guide members, respectively, thereby electrically connecting the contact ends to the first and second printed circuit boards, respectively, for electrical connection between the first and second printed circuit boards through the float connector.

Abstract: A lighting assembly is presented herein. The lighting assembly includes a receptacle terminal having a connection portion defining an aperture configured to receive a corresponding plug terminal along a longitudinal axis and a terminal housing defining an opening and a cavity in which the connection portion is disposed. The connection portion is sized, shaped, and arranged within the cavity to be movable along a lateral axis perpendicular to the longitudinal axis.

Abstract: An electrical connector includes a heat dissipation module with a first end and a second end opposed to the first end and two receptacle connectors located at the second end. The first and second ends define a transceiver-mating direction such that, when a transceiver is inserted into the first end of the heat dissipation module in the transceiver-mating direction, the transceiver mates with one of the two receptacle connectors, and in the heat dissipation module, air flows parallel to the transceiver-mating direction between the first and second ends and flows between the two receptacle connectors.

Abstract: A mated connector assembly includes: a first connector assembly, comprising a plurality of first coaxial connectors mounted on a mounting structure and a first shell; and a second connector assembly, comprising a plurality of second coaxial connectors, each of the second coaxial connectors connected with a respective coaxial cable and mated with a respective first coaxial connector. The second connector assembly includes a second shell surrounding the second coaxial connectors, the second shell defining a plurality of electrically isolated cavities, each of the second coaxial connectors being located in a respective cavity. In in a mated condition the second shell resides within the first shell.

Abstract: An ejector for electric vehicle charging connectors is provided. An ejector can be configured to be secured on the inside of the charging port of an EV and to automatically eject or push the charging connector from the charging port. The ejector may include a pusher assembly that selectively extends through an opening in a housing forming the socket of the charging port. The ejector may also include a driver assembly that forces the pusher assembly through the opening to eject the charging connector while allowing the pusher assembly to be freely withdrawn when the charging connector is inserted.

Abstract: A floating connector assembly for an information handling system includes a first float bracket and a connector. The first float includes a bar. The connector includes a first receptacle and a first compressible component. The first compressible component is placed in physical communication with the bar of the first float bracket. In response to a force exerted on the connector, a region of the first compressible component is compressed. The connector floats with respect to the first float bracket in a direction of the force exerted on the connector.

Abstract: Systems and methods are provided for water resistant connectors. A male connector includes a rib or a draft angle that creates a seal when engaged with a female connector. A male connector includes an overmold that includes or is made of a thermoplastic elastomer. Male or female connectors include molds that include or are made of a thermoplastic polymer, such as polypropylene. A female connector includes spring contacts that fit within individual pockets of the female connector.

Abstract: An electrical connector assembly has a moving plate for protecting a terminal, which may easily separate the moving plate from a male plate for a rework operation for realigning a terminal pin without damage and may decrease a force when a female connector is inserted into and fastened to the male connector to push the moving plate. This improves the quality by reducing the difficulty when the female connector is inserted into and fastened to the male connector and improves a locking projection structure of the female connector such that the moving plate may easily return to the original location at all times when the female connector is separated.

Abstract: A ganged connector assembly includes: a plurality of coaxial connectors, each of the coaxial connectors connected with a respective coaxial cable extending rearwardly therefrom, each of the coaxial connectors including an inner contact and an outer body that is electrically separated from the inner contact; a shell having a plurality of cavities; and a plurality of rear bodies, each of the rear bodies encircling a respective outer body, each of the rear bodies mounted in a respective cavity of the shell. Each of the rear bodies includes a first locking feature. A second locking feature is located in each of the cavities and is fixed relative to the shell.

Abstract: A heavy-duty, harsh environment coaxial connector assembly includes a mounting shell connector including a cylindrical body and an electrically conductive mounting flange extending from the cylindrical body, a plurality of mounting apertures formed in the flange to support the mounting shell connector via a plurality of fasteners extending through the respective mounting apertures, and wherein each of the plurality of fasteners is electrically isolated from the mounting flange.

Abstract: An electrical plug connector, in particular an electrical pin connector socket for the power electronics in the automotive sector, comprising a plug connector body for receiving a contact device and comprising a shield. The plug connector body is designed for introducing into an opening of a housing part of a housing of an electronics unit. The plug connector body is designed in multiple parts and has at least one inner plug connector body and an outer plug connector body, which are positioned on opposite sides of the housing part. The inner plug connector part can be fixed in the housing of the electronics unit independently of the housing part. Securing means connect the plug connector bodies to one another so that the housing part is fixed between the plug connector bodies.

Abstract: A self-aligning mechanical mount and electrical connection system for an electronic module comprises a mechanical mount assembly configured to be integrated into or attached to a base frame and defining a mount connection position assurance (CPA) feature for self-aligning and securing of the electronic module therein, and an electrical connection assembly configured to be integrated into or attached to the mechanical mount assembly and comprising a modular electrical connector (i) being electrically connected to an electrical backbone wire cable and (ii) defining a connector CPA feature for self-aligning the modular electrical connector with a corresponding electrical connector integrated into or attached to the electronic module when the electronic module is secured in the mechanical mount assembly.

Abstract: A connector for attachment to a planar surface, said connector comprising a shell housing configured for attachment to said planar surface, an insert housing connected to said shell and defining two or more insert ferrule openings, at least one retainer attached to said insert housing and defining two or more retainer ferrule openings aligned with said insert ferrule openings, and two or more ferrule assemblies disposed within said two or more insert ferrule openings.

Abstract: A powered device includes a powerhead unit and an attachment unit selectively attachable to and powered by the powerhead unit. The powerhead unit includes a motor, a first shaft segment having a first driveshaft segment coupled to the motor, and a first connecting portion attached to the first shaft segment. The attachment unit includes an operational unit configured to be driven by the motor, a second shaft segment having a second driveshaft segment coupled to the operational unit, and a second connecting portion attached to the second shaft segment for coupling to the first connecting portion. One of the first connecting portion and the second connecting portion defines an axial opening having a keyway and includes a button having a hook portion. The other of the first connecting portion and the second connecting portion defines a slot and includes a key.

Abstract: The invention provides a floating connector with a power electrode structure, which includes a plug and a socket. The plug includes a plug base body, a connector, a first signal terminal group, a first power terminal group and a fixing member. The socket includes a socket upper shell, a socket lower shell, a connecting slot, a second signal terminal group, a second power terminal group, a fixer and a tongue plate. When the plug is inserted into the socket, the first signal terminal group is electrically connected to the second signal terminal group and the first power terminal group is electrically connected to the second power terminal group, between the connector and the connecting groove, for transmitting power and signals.

Abstract: The present disclosure provides a fastener for supporting and connecting two electric connectors. The fastener comprises a support portion provided with a support surface on a top portion thereof, a connecting hole penetrating the support surface and extending into the support portion, and a pair of clamping shoulders respectively arranged on opposing first and second sides of the support portion. The pair of clamping shoulders are made of a first elastic material at least at top portions thereof such that, when the fastener is mounted in a receiving slot of a fastener receiving member, the pair of clamping shoulders can be pressed against the fastener receiving member to provide an amount of elastic deformation, which enables the fastener to move a certain distance toward the electric connectors relative to the fastener receiving member when the fastener is connected to the electric connectors.

Abstract: The present disclosure relates to a modular connector assembly and a base station antenna. The modular connector assembly comprises a support and a plurality of connectors mounted on the support. The support is configured as a one-piece support and provided with a plurality of through holes for mounting of the connectors. Each connector is configured to be formed of a first component and a second component that are connectable to each other. The first component and the second component of each connector are located on opposite sides of the support, respectively, are connected to each other by passing through the through holes in the support, and sandwich the support therebetween, thereby fixedly mounting each connector to the support.

Abstract: A connector system that uses an elastomeric suspension to provide compliance for mating alignment and to provide an axial compression force of the two connector halves. This connector system uses a first connector half mounted to a body and a second connected half that comprises a rigidly mounted outer housing with elastomeric suspension element(s) that suspend an inner connector housing. The outer housing could be mounted to another body in such a way that the mating process of the two connector halves might not be observable. The axial compression force of the two connector halves keeps them tightly mated.

Abstract: A coaxial connector comprises an outer conductor, an inner conductor, and a dielectric spacer disposed between the outer conductor and the inner conductor. The outer conductor includes a first outer conductor component and a second outer conductor component configured to be floatable axially and radially relative to the first outer conductor component. The inner conductor includes a first inner conductor component and a second inner conductor component configured to be floatable axially and radially relative to the first inner conductor component. The coaxial connector further includes a first elastic element disposed around an outer circumference of the proximal portion of the second outer conductor component, and a second elastic element disposed in the cavity of the first inner conductor component. The coaxial connector is self-adaptive for the mating, and is particularly suitable for board-to-board connector assemblies and may ensure a high return loss performance and good PIM characteristics.

Abstract: A connecting plug is described. The connecting plug comprises a central pin and a lamella sleeve, with the lamella sleeve comprising a front opening, a rear opening and a plurality of lamellae. The lamella sleeve circumferentially encloses an axial segment of the central pin and wherein the lamella sleeve is fixed to the central pin. The central pin extends through the rear opening, through the lamella sleeve and through the front opening of the lamella sleeve.

Abstract: An adaptive connector comprising a contact jack and a lamella comb, wherein the lamellae of the lamella comb electrically contact the contact jack, characterised in that the contact jack is connected in a mechanically inseparable but movable manner with the lamella comb. The contact jack can be pivoted relatively to the lamella comb with an angular range of more than 2 degrees while maintaining contact between the contact jack and the lamellae of the lamella comb, and/or the contact jack can be moved translationally relatively to the lamella comb in at least one direction within a translational range of more than 1 millimetre. Moreover, an adaptive connector comprising two or more adapter elements that are electrically separate from each other.

Abstract: An electrical connector contains a first contact group arranged on a first contact plane, a second contact group arranged on a second contact plane and a ground plate located on a ground plane. The ground plate is located between horizontally extending portions of the contacts of the first contact group and horizontally extending portions, downwardly extending portions and terminal portions of the contacts of the second contact group in addition to between contacting portions and the horizontally extending portions of the contacts of the first contact group and contacting portions and the horizontally extending portions of the contacts of the second contact group.

Abstract: A connection device and a floating connection assembly are provided. The floating connection assembly includes a floating connector and an assembling module. The floating connector includes a floating module and a main body. The floating module defines an assembling region and a plurality of holding regions that are distributed around the assembling region. The main body is inserted into the assembling region of the floating module. The assembling module is retained by the floating module through the holding regions. The floating module and the assembling module are jointly configured to movably clamp a panel, and are jointly movable relative to the panel.

Abstract: An electrical connection assembly and a floating connector are provided. The floating connector includes a floating module, a main body, and a plurality of elastic components. The floating module defines an active region therein, and the floating module has a plurality of thru-holes arranged outside of the active region. The main body is inserted into the active region of the floating module. The elastic components are disposed in the active region and are elastically deformable along an insertion direction. Two ends of each of the elastic components are respectively abutted against the floating module and the main body, so that the main body is movable along the insertion direction relative to the floating module through at least one of the elastic components.

Abstract: The present disclosure provides a housing for wire to board connectors. The housing comprises a main body, a first end cover, and a second end cover. The main body comprises an accommodating groove, the bottom of which is provided with a plurality of terminal openings disposed at intervals. A terminal module is disposed in the accommodating groove. A plurality of terminal groups are respectively inserted into the corresponding terminal openings. The first end cover disposed on one end edge of the main body comprises a plurality of first partition parts disposed at intervals. The second end cover disposed on the other end edge of the main body comprises a plurality of second partition parts disposed at intervals, and is opposite to the first end cover. The plurality of second partition parts and the plurality of first partition parts are alternately disposed.

Abstract: The present disclosure provides a wire to board connector. The wire to board connector comprises a body, a plurality of sheet-shaped insulating bodies, a plurality of first covers, and a plurality of second covers. The body comprises an accommodating groove. The sheet insulating bodies are arranged in the accommodating groove in parallel along a first direction. Each of the sheet insulating bodies is provided with a plurality of terminal groups and a plurality of cables corresponding to the terminal groups. The plurality of terminal groups is disposed along a second direction. The first direction is perpendicular to the second direction. The plurality of first covers correspond to the plurality of second covers. The corresponding first cover and second cover respectively cover the opposite sides of the corresponding sheet-shaped insulating body in the first direction.

Abstract: A system includes a first component, a second component, a locking pin, and an interface assembly that is configured to selectively adjust a stiffness of a coupling interface between the first component and the second component. The interface assembly includes at least one support coupler secured to the first component. The support coupler(s) includes a main body, a first arm extending from a first side of the main body, a second arm extending from a second side of the main body, and a flange extending from the main body. The flange includes a locking pin hole that is configured to selectively receive the locking pin. The locking pin is selectively moveable between a retracted position in which the locking pin is out of the locking pin hole, and a deployed position in which the locking pin extends into the locking pin hole and a portion of the first component and locks the interface assembly to the first component.

Abstract: A terminal module, comprising a first cover, a first insulator, a second insulator, and a second cover. The first insulator is installed on the first cover, comprising a plurality of terminal bases and a plurality of first accommodating grooves. The plurality of terminal bases is disposed at the bottom of the first insulator. A terminal group is disposed in each of the terminal bases. The second insulator is disposed on the first insulator, comprising a plurality of second accommodating grooves. The plurality of second accommodating grooves correspond to the plurality of first accommodating grooves. Each of the first accommodating grooves and the corresponding second accommodating groove accommodate a cable collectively. The cable is electrically connected to the corresponding terminal group. The second cover is installed on the first insulator, so that the first insulator and the second insulator are disposed between the first cover and the second cover.

Abstract: An electrical connection device (1). The electrical connection device comprises a vehicle side electrical connector (3) comprising a first mounting seat (31), a first high-voltage assembly (32) and a first low-voltage assembly (33); and a battery side electrical connector (5) comprising a second mounting seat (50), a second high-voltage assembly (51) and a second low-voltage assembly (52). The first high-voltage assembly and the second high-voltage assembly are in a separable floating electrical connection. By means of the electrical connection device, the first high-voltage assembly and the second high-voltage assembly can be prevented from hard damage, the stability of the electrical contact between the first high-voltage assembly and the second high-voltage assembly can be ensured, thereby ensuring the reliability of the electrical connections of the two parties, and improving the waterproof performance of the vehicle side electrical connector and the battery side electrical connector.

Abstract: A receptacle connector includes a fixed housing, a movable housing, a plurality of receptacle contacts disposed across the fixed housing and the movable housing, and a receptacle hold-down that restricts upward movement of the movable housing from the fixed housing. The movable housing is movable in a pitch direction of the plurality of receptacle contacts in relation to the fixed housing. The receptacle hold-down includes two housing fixing parts to be fixed to the fixed housing, and an elastic deformation part supported by the housing fixing parts and opposed to the movable housing in an insertion and removal direction. The elastic deformation part is opposed to the movable housing in the pitch direction and elastically deformable in the pitch direction.

Abstract: An LED (light emitting diode) panel. In particular, an LED panel that is part of a modular system used to construct a wall mounted LED video screen. An LED panel includes a chassis and an LED tile including a plurality of surface mount devices attached thereto. The LED tile is removably mounted to a front of the chassis, and further includes: a first power connector and a first data connector; and a connector assembly mounted on the chassis. The connector assembly includes a support board; a second power connector; a second data connector; and a biasing member arranged to urge the support board in a direction towards the front of the chassis, such that the second power connector and second data connector engage with the first power connector and first data connector, respectively.

Abstract: An electrical connector adapted to be electrically connected with a mating terminal includes an outer housing, an inner housing, and an elastic terminal. The outer housing includes an outer cylindrical body, and an upper blocking disc and a lower blocking disc radially extending inwardly from opposite ends of the outer cylindrical body, the upper blocking disc has an outer through hole. The inner housing includes an inner cylindrical body and a mounting portion surrounding an outer periphery of the inner cylindrical body. The inner housing is formed with an inner through hole. The mounting portion is movably mounted in a space defined by the outer cylindrical body, the upper blocking disc, and the lower blocking disc. The elastic terminal is mounted within the inner cylindrical body and adapted to be electrically connected with the mating terminal inserted into the inner cylindrical body through the outer through hole and the inner through hole.

Abstract: An apparatus and method for storing energy in a electromechanical lock. The electromechanical lock can include a main housing and a deadbolt. The main housing can be configured to extend a deadbolt along a path to lock and/or unlock a door. The deadbolt can have a hollow inner region configured to receive an energy storage device. The energy storage device within the deadbolt can be electrically connected to the main housing. The energy storage device can be used to power an actuator and/or accelerometer in the main housing.

Abstract: A connector includes a movable housing, a fixed housing, plural signal terminals, and a pair of power source terminals. Each of the power source terminals is formed in an elongated shape with a length in a span direction as viewed along an insertion/removal direction, spans between a pair of sidewalls, includes a span direction intermediate portion retained by a terminal array direction end portion of the movable housing, and includes second elastic portions each capable of undergoing elastic deformation at a location positioned between the movable housing and the pair of sidewalls.

Abstract: The present invention provides a high-power board-to-board floating connector that comprises a male header and a female socket. The male head comprises a first electrode, a first housing and a first insertion element. The female socket comprises a second electrode, a second housing, a floating member, and a second insertion element. The second housing combines with the floating member to form a connection part which can be slightly moved in one or more directions, so that the male head can be connected to the female socket in a permissible range, and then the first electrode is electrically connected to the second electrode.

Abstract: A connector ring comprising a body extending along a longitudinal axis and two sets of sensor connectors. The first set of sensor connectors comprises one or more transmitter sensor connectors coupled with the body and extending parallel to the longitudinal axis, the one or more transmitter sensor connectors having a first end. The second set of sensor connectors comprises one or more receiver sensor connectors coupled with the body and extending parallel to the longitudinal axis, the one or more receiver sensor connectors having a first end. The first end of the transmitter sensor connectors and the first end of the receiver sensor connectors are staggered along the longitudinal axis.

Abstract: An electric connector includes a fixing-side contact having a vertical portion of plate shape, a relay contact having a pair of front arms and a pair of rear arms, and an insulator having a relay contact insertion groove, the vertical portion of the fixing-side contact being sandwiched between the pair of rear arms so that the relay contact is held to be swingable with respect to the fixing-side contact and is electrically connected to the fixing-side contact, an opening width of an opening of the relay contact insertion groove of the insulator being shorter than an opening width at ends of the pair of front arms located on a forward side in a fitting direction.

Abstract: A plug-in connector part for plug-in connection to an associated mating plug-in connector part includes: a holder frame; and a plurality of modular contact inserts inserted into the holder frame which each include a plug-in portion for connecting to the mating plug-in connector part in a plug-in direction and have a contact element arranged thereon for contacting the mating plug-in connector part. At least one of the contact inserts includes a module housing inserted into the holder frame and a contact support which is arranged on the module housing, is movable relative to the module housing in the plug-in direction, and forms the plug-in portion of the contact insert.

Abstract: A board to board connector may include: a first shell coupled to a first board, and including a protruding extension part extended upward in a longitudinal direction and having one end protruding in a radial direction; and a second shell including an elastic rotating part extended downward in the longitudinal direction toward between a cover part and the protruding extension part, and having one end protruding in the radial direction so as to be engaged with and fixed to the protruding extension part. The elastic rotating part may be spaced apart from the cover part, made of an elastic material, and rotatable from side to side in a movement space formed between the elastic rotating part and the cover part.

Abstract: A mated connector assembly includes: a first connector assembly, comprising a plurality of first coaxial connectors mounted on a mounting structure and a first shell; and a second connector assembly, comprising a plurality of second coaxial connectors, each of the second coaxial connectors connected with a respective coaxial cable and mated with a respective first coaxial connector. The second connector assembly includes a second shell surrounding the second coaxial connectors, the second shell defining a plurality of electrically isolated cavities, each of the second coaxial connectors being located in a respective cavity. In in a mated condition the second shell resides within the first shell.

Abstract: An antenna unit that includes an antenna, at least one radio unit, and an interconnect that includes first and second mating connectors. The first connector is configured to be electrically and mechanically coupled to the antenna and the second connector is configured to be electrically and mechanically coupled to the at least one radio unit. The first connector has lead-in geometry, and radial and axial float for blind mating of the first and second mating connectors.

Abstract: A movable connector including a stationary housing for fixing to a substrate, a movable housing capable of moving relative to the stationary housing, and a restriction fitting that has been integrated with the stationary housing. The restriction fitting includes a counterpart engagement portion. The counterpart engagement portion is configured to abut an engagement portion that is part of the movable housing from a connector upward direction so as to enable the engagement portion to be restrained in a restraint space that is a predetermined region. The counterpart engagement portion forms a through-pass section to permit the engagement portion to pass into the restraint space from outside.

Abstract: A mated connector assembly includes: a first connector assembly, comprising a plurality of first coaxial connectors mounted on a mounting structure and a first shell; and a second connector assembly, comprising a plurality of second coaxial connectors, each of the second coaxial connectors connected with a respective coaxial cable and mated with a respective first coaxial connector. The second connector assembly includes a second shell surrounding the second coaxial connectors, the second shell defining a plurality of electrically isolated cavities, each of the second coaxial connectors being located in a respective cavity. In in a mated condition the second shell resides within the first shell.

Abstract: A coaxial microwave connector, intended to link two printed circuit boards (PCBs) to one another, of central axis (X) comprising: two connection elements each with a central contact and a ground contact, the ground and central contacts of the second element being free to be displaced, along the axis (X), relative to those of the first element, between a configuration of disconnection, and a configuration of connection in which the elements are intended to establish an electrical ground and central contact between the two PCBs; and at least one flexible electrically insulating washer, which both allows the coaxial mechanical holding between each central contact inside the ground contact of the first or of the second connection element, and makes it possible to establish a mechanical pressure between the end of the central contact and one of the two PCBs.

Abstract: An electrical connector includes a unitary base elongated along a longitudinal direction. A first tongue extends forwardly from the base and has a uniform thickness along the longitudinal direction. The first tongue comprises a plurality of spaced apart first contacts. A second tongue extends forwardly from the base and comprises a plurality of spaced apart second contacts. The first and second tongues define a gap therebetween that extends from a front edge of one of the first and second tongues toward the unitary base.

Abstract: A connector comprises a fixed housing and a movable housing movable relative to the fixed housing. The fixed housing has an end wall, and the movable housing has a regulated portion. The end wall is provided with a stopping portion and a projecting portion projecting inward in a pitch direction (Y-direction). The regulated portion is provided with a reference surface, a stopped portion and a receiving recess. The stopped portion projects outward in the pitch direction beyond the reference surface to be located below the stopping portion, and an upward movement thereof is regulated by the stopping portion. The receiving recess is recessed inward in the pitch direction beyond the reference surface. The receiving recess faces, at least in part, the projecting portion in the pitch direction or receives, at least in part, the projecting portion.

Abstract: A socket connector is configured to mount to a component, such as a printed circuit board. The socket connector includes a base having a passageway and a channel extending outwardly from the passageway, a barrel including a wall having a flange extending outwardly therefrom, at least one biasing member engaging the flange and surrounding the wall, and a contact seated within the barrel. The wall is seated within the passageway and the flange is seated within the channel. The barrel is configured for movement within the base to align a centerline of a pin inserted into the socket connector with a centerline of the hole of the component.

Abstract: A connector includes a housing and a terminal held in the housing and to be mounted on a mounting member disposed outside the housing. The terminal includes a main body part inserted into a space formed in the housing, a leg part extending from the main body part toward a mounting surface of the mounting member in a state where the terminal is mounted on the mounting member, and a mounting part provided continuously from the leg part and to be mounted on the mounting member. The connector further includes a leg part holder connected to the housing and to hold the leg part.

Abstract: In one example, a board mating connector, in which a signal contact unit and a ground contact unit are interlocked, includes: a signal contact unit which has one side in contact with a signal electrode of a board and is electrically connected to the signal electrode; a ground contact unit which has one side in contact with a ground electrode of the board and is electrically connected to the ground electrode; and a dielectric unit which is disposed between the signal contact unit and the ground contact unit, wherein the ground contact unit includes a ground portion and another ground portion which is relatively moved in contact with the ground portion so as to be coupled to and interlocked with a connection portion through the dielectric unit.

Abstract: A connector comprises a plurality of outer contacts including a first outer contact and a second outer contact that are slidably assembled together, a plurality of inner contacts disposed within the outer contacts, and a first elastic element disposed between the first outer contact and the second outer contact and adapted to exert a first axial pushing force onto the first outer contact. The second outer contact has an outer cylinder and an inner cylinder connected to the outer cylinder. A receiving groove having an annular cross section is defined between the outer cylinder and the inner cylinder. The first outer contact has an elastic latch adapted to be inserted into the receiving groove and adapted to be latched onto an inner wall of the outer cylinder.