Abstract: The present invention relates to a BGA socket apparatus which is a lidless-type from which a cover, generally provided on the top part of a socket body in order for the loading/unloading operation of an IC, is removed, the BGA socket apparatus enabling the elimination of elements which may obstruct air flow during testing.

Abstract: Problem: To realize a connection with a counterpart connector with high spacing efficiency, and to stably maintain an electrically connected state while having a compact and low profile and without the terminal being deformed or damaged, even when subjected to a force from a counterpart terminal when mated with the counterpart terminal, which increases reliability. Solution: The terminal includes a substrate fixing part 52 fixed to a substrate 11, a pair of contact parts which sandwich a counterpart terminal 151, and an elastic deformation part having both ends connected to the substrate fixing part 52 and the contact parts, respectively, wherein a spring constant of the elastic deformation part is smaller than a spring constant of the contact parts.

Abstract: A lamp socket for a lamp base, in particular a pin-based lamp base, is provided. The lamp socket comprises an electrically insulating housing having a cavity that is entirely framed by the housing in lateral directions, wherein the cavity is adapted for receiving a connector casing of the lamp base, wherein a bottom of the cavity comprises a receptacle for receiving a connector pin of the lamp base, and wherein a height of the cavity corresponds to at least a length of the connector pin.

Abstract: A connecting structure comprising: a connecting plate that has an abutting surface abutting with an electronic device and a fixing surface abutting with an adapter, a first fixing plate arranged at one end of the connecting plate, the first fixing plate protruding towards the electronic device from the abutting surface; and a second fixing plate arranged at the other end of the connecting plate, the second fixing plate protruding towards the electronic device from the abutting surface, wherein the second fixing plate is arranged opposite to the first fixing plate to define an accommodating slot for receiving an end of the electronic device having an interface. The connecting structure and the adapter reinforce the connection force between the plug and the interface, thus reducing the possibility of separation and preventing the plug from being broken.

Abstract: The present invention relates to the technical field of bulbs, and discloses a bulb core column structure and a bulb with the bulb core column. The bulb core column structure comprises a plastic seat and at least one resistor a. The present invention has the following advantages: 1. the resistor is directly clamped on the plastic seat through structural change, and the clamping and fixing effect is good; 2. the assembly is simpler and is more suitable for mechanical automation, the resistor can be fixed after being directly inserted into the clamping seat without displacement, and the resistor is more stable for subsequent welding; and 3. the working procedure of pressing and fixing the resistor is reduced, thereby reducing manufacturing costs with stable product performance.

Abstract: Provided is a battery pack. The battery pack includes a battery cell, a circuit unit, a lock member, and a lead member, the lock member and the lead member being assembled with each other to form a signal transfer path between the battery cell and the circuit unit, wherein the lock member includes a stopper protruding upward in an up-down direction that is different from an assembling direction of the lead member, and a groove portion depressed downward, the stopper and the groove portion provided at different locations from each other along the assembling direction of the lead member, and the lead member includes an end portion contacting the stopper and a pressing portion contacting the groove portion.

Abstract: An electrode connector adapted for attachment to a biomedical patient electrode by either pinch or snap connection includes a pair of pivotally connected members including a connector body and a jaw pivotally connected to said connector body, with the jaw defining a beveled lower surface that functions to urge the jaw open by engagement of the top surface of an ECG stud thereby allowing the connector to be attached by snap engagement. An electrically conducting plate is disposed at the bottom of the connector to maximize electrical contact with the electrode stud. The jaw member further includes a lip functioning to engage a lower portion of the head of the stud and urge the radially enlarged base of the stud into electrical contact with the bottom surface of said electrically conducting member. An ECG electrode connector in accordance with the present invention may further be fabricated of radiolucent materials.

Abstract: Disclosed is a BGA socket device used for testing a BGA IC and having a dual pinch type contact. The BGA socket device includes: contacts each including a fixed terminal and a movable terminal and configured such that respective upper ends of the fixed and movable terminals are offset from each other with respect to each solder ball of the IC; a main body in which the contact is provided and fixed; a cover supported on an upper surface of the main body and configured to be movable up and down; and a slider provided between the main body and the cover and configured to slide left and right, thus opening and closing the movable terminal in a horizontal direction, the slider having a fixed terminal receiving hole and a movable terminal receiving hole in which the fixed and movable terminals of the contact are received, respectively, by passing therethrough.

Abstract: An electrical connector includes a housing which is provided with an installation cavity and a jack. A conductive clamp and a movable member are configured in the housing. The conductive clamp is provided with at least one pair of first clamping pieces and at least one pair of releasing pieces. The first clamping pieces and the releasing pieces extend into the installation cavity. The movable member is capable of moving back and forth along the installation cavity. A conducting wire is capable of passing through the jack and is inserted into one pair of first clamping pieces. The movable member is capable of moving forward along the installation cavity, and abutting on one pair of releasing pieces, to force the releasing pieces and drive the first clamping pieces to open outward, so that the conducting wire is capable of detaching from the first clamping pieces.

Abstract: The present disclosure provides an electric wire clip, which includes a housing, a contact member and a pressing mechanism. The housing is provided with a mounting passage and an inserting hole communicating with the mounting passage. The pressing mechanism includes a pressing arm and a rotating shaft disposed on the pressing arm and hinged with the housing. In operation, the wire can pass through the inserting hole and be engaged with the clamping protrusion. When the wire needs to be pulled away, the driving pressing arm is rotated downwardly, and the first hook is swung downwardly to be engaged with the clamping protrusion. When rotating downwardly, the pressing arm is able to abut and drive the clamping piece to move outwardly, so that the clamping piece disengages from the wire to facilitate pulling away the wire.

Abstract: A terminal block, particularly for the connection of printed circuit boards or “PCB”, comprising an enclosure made of insulating material adapted to accommodate at least one electrical cable and grip elements adapted to retain the electrical cable inside the enclosure; the enclosure is adapted to actuate the grip elements for the extraction/insertion of the electrical cable from/in the enclosure.

Abstract: Disclosed is a connection element, which includes a contact element and an actuating element and serves for mechanically and electrically contacting a conductor. The contact element has at least one contact arm, which is designed for spring-loaded clamping of a conductor on a contact surface. The connection element can be transferred into different open or closed states by a driver on the contact arm and by a guide contour in the actuating element.

Abstract: A connection terminal includes a housing; an insertion opening, which is arranged on the housing and into which a conductor can be inserted in an insertion direction; a contact element, which is arranged on the housing and with which the conductor can be brought into contact by insertion into the insertion opening; a spring element, which is arranged on the housing, is held on the housing by a spring body, and has a resiliently movable spring leg extending from the spring body, wherein the spring leg clamps the conductor inserted into the insertion opening to the contact element in a clamping position; and an actuating element, which is arranged on the housing and can be actuated in an actuation direction to move the spring leg out of the clamping position, wherein the actuating element can be locked to the housing in an open position.

Abstract: An electronic component protecting cover includes a fixed cover portion, a hinge portion, and a rotatable cover portion. One of the fixed cover portion and the rotatable cover portion has engaging portions at two locations, and the other of the fixed cover portion and the rotatable cover portion has catching portions at two locations, the engaging portions and the catching portions being configured to be engaged with each other. Each of the engaging portions has a pair of locking tabs, and each of the catching portions has a pair of locking frames. Because each of the engaging portions and each of the catching portions has double-locking structure, sufficient locking force can be provided.

Abstract: A device includes a circuit element, a housing for the circuit element and a terminal for coupling the circuit element to an electrical circuit. The terminal includes an engagement portion and a sleeve portion. The engagement portion is configured to engage a base for the electrical circuit. The sleeve portion couples the engagement portion to the circuit element. The housing encloses the sleeve portion.

Abstract: The invention relates to a push-in clamp retainer for an electric connector element with a lead wire receptacle which is at least partly encircled by a surrounding wall. In a lateral direction, a push-in clamp assembly includes such a push-in clamp retainer and a separate spring member having a first end and second end, The invention also relates to an electric connector element having a spring release member and a push-in clamp assembly. The invention involves the implementation of at least one receiving member into at least one contraction of the push-in clamp retainer, combining such a push-in clamp retainer with a spring member to form the push-in clamp assembly, and adding a spring release member to the push-in clamp assembly to obtain the electric connector element.

Abstract: A very low profile connector (e.g., less than 1.9 mm high) utilizes stored energy in a horizontal beam to augment contact displacement and is contained in a cage that will eliminate any transfer of forces to the solder joints that hold the connector to the circuit board.

Abstract: A terminal block is adapted to be connected to a wire, and includes an insulating base seat and a clamping unit. The insulating base seat includes first and second seat portions cooperating with each other to define a passage and a receiving space that communicates with the passage. The clamping unit includes a positioning member connected to the first seat portion and having an upper press section, and a resilient member having a base portion that is proximate to the second seat portion, and a resilient arm portion that is connected to the base portion, and that has a lower press section extending toward the positioning member. The upper and lower press sections are adapted for clamping resiliently an end segment of the wire therebetween.

Abstract: The invention describes a spring-three terminal connection for the terminal connection of electrical conductors, having an insulating-material housing which has at least one conductor insertion opening for the insertion of an electrical conductor, at least one clamping spring which has a contact limb, a clamping limb and a spring how which connects the contact limb and the clamping limb to one another, and having at least one operating which is accommodated in the insulating-material housing such that it can be displaced and which has an operating area for making contact with the clamping limb and moving the clamping limb in the direction of the contact limb for opening the clamping point when the operating button is displaced in the direction of the interior of the insulating material housing. The insulating-material housing contains at least one button opening for accommodating an associated operating button, said button opening being open in the direction of an associated conductor insertion opening.

Abstract: A clamp for establishing an electrical connection with a conductor is provided. The clamp comprises a first body and a second body. The second body is pivotally coupled to the first body. The first and second bodies define a receiving region therebetween for receiving a conductor. The first and second bodies are biased towards each other at the receiving region to clamp a conductor. The clamp also comprises a shutter, movably coupled to one of the first body and the second body. The shutter is biased into a restricting position in which entry into the receiving region is restricted.

Abstract: A low-profile electrical connector includes a housing having exterior perimeter sides and top and bottom surfaces, where the bottom surface is configured to extend along a user's body site and the top surface is spaced above the bottom surface. The connector also includes a side-entry guide channel disposed along the bottom surface. The channel includes an opening along the exterior perimeter side that is configured to receive an electrically conductive element. The channel is also configured to guide the electrically conductive element within the housing. The connector includes a receptacle positioned within the housing and forms an electrically conductive interface with the electrically conductive element.

Abstract: A connector terminal includes first and second arm parts, an interconnection part, a first contactor formed of a piece of sheet which is in a bent shape so as to have the first end laid over on a second end of the sheet with reference to a bent part that is an opposite side to a side where the first end of the sheet and the second end thereof are present, and a second contactor formed of a piece of sheet which is in a bent shape so as to have the first end laid over on a second end of the sheet with reference to a bent part that is an opposite side to a side where the first end of the sheet and the second end thereof are located, and the second contactor facing the first contactor.

Abstract: A biomedical electrode structure is presented. The electrode structure comprises a contact member having a tissue interfacing face for contacting a tissue surface, and an opposite electrical coupling face; at least a first electrically conductive surface disposed within said tissue interfacing face, and being configured to electrically couple to a portion of the contacted tissue; and at least two electrical connectors mounted in a spaced apart relationship on said electrical coupling face and electrically coupled to different regions of said electrically conductive surface for allowing measurement of at least one electrical property of at least a portion of said at least first electrically conductive surface residing therebetween.

Abstract: Providing an electrical component socket that enables stability of an electric resistance value to be maintained even after repeated use. A contact pin of the present invention includes: a lower contact portion; a spring portion that is provided so as to extend upward from the lower contact portion; a linear portion provided so as to extend upward from an upper end of the spring portion; and an upper contact portion that is formed on an upper end side of the linear portion. The upper contact portion includes a first contact protrusion arranged on an extension of the linear portion and a plurality of second contact protrusions arranged at respective positions off the extension of the linear portion.

Abstract: A simple female terminal includes a mounting base, a weld leg, and an elastic plate. One end of the mounting base bends to form the weld leg. Another end of the mounting base bends to form the elastic plate. A head of the elastic plate bends toward the mounting base to form a contact head. While a male terminal comes into contact with the elastic plate, the contact head is pushed by the male terminal so that the contact head can rest against the mounting base. A connector and an LED lamp adapted to the simple female terminal are also disclosed. The structure of the female terminal is simplified, so the structure of the connector and the LED lamp are also simplified to obtain an easy installation and reduce the cost.

Abstract: A contact member provided inside a cylindrical contact holder of a female terminal has a diameter variable portion including a number of metal string members whose both ends are held by front side and rear side holding rings. When a slider is moved in a connector engaged state, a linear movement of a cam projection provided on the slider is converted into a rotational movement of a rotary ring by a cam groove 290, so that the front side holding ring fixed to the rotary ring is rotated to apply a twist to the diameter variable portion, whereby the metal string members are deformed into a hyperboloidal shape and the smallest inner diameter portion thereof is brought into pressure contact with a male terminal.

Abstract: An electronic device includes an accepting connection terminal to which a connection cable can be connected, and a rotation inhibiting member that inhibits the connection cable from rotating an amount equal to or greater than a predetermined amount around the accepting connection terminal in a state where the connection cable is connected to the accepting connection terminal.

Abstract: Apparatuses (e.g., devices, systems), and methods for transdermal electrical stimulation (TES). Apparatuses described herein can be self-contained, lightweight, and wearable. The apparatus may include a primary unit (TES stimulator) and an electrode portion that includes a first transdermal electrode and a second transdermal electrode and mates with the TES stimulator. The first electrode and secondary electrode are placed at two locations on the skin of a user, for example on the head and/or neck of a user. Electrical stimulation driven between the two electrodes may induce a cognitive effect in a user of the device.

Abstract: A solderable electric connector formed of a metal sheet as a single body includes a flat bottom portion soldered to a conductive pattern of a printed circuit board (PCB), an elastic fastening portion bent and extended from one end of the bottom portion in a longitudinal direction thereof, and a housing vertically bent and extended from one end of the bottom portion in a width direction and surrounding the elastic fastening portion. Herein, a front end of the housing is vertically bent downwards and forms a supporting plate and a penetration hole is formed in a certain location on the supporting plate. Also, a pressurizing projection projects from a top surface of the elastic fastening portion and a metal core of a wire passing through the penetration hole is pressurized between the pressurizing projection and a bottom surface of the housing and coupled therewith.

Abstract: A socket according to the present invention comprises a base member for holding a plurality of contacts, a cover member and a latch mechanism for pressing a semiconductor package. A latch member has a pressing portion, a link member connected to the cover member and pressing portion of the latch member, a lever member rotatably fixed to the base member and connected with the cover member at a first end and with a narrow portion of the cover member at a second end. The link member and the lever member cause the pressing portion of the latch member to move to an evacuated position when the cover member moves in a direction to be close to the base member, while the link member and the lever member cause the pressing portion of the latch member to move to a position where an electronic device can be pressed.

Abstract: A receptacle assembly is provided with an electrically conductive terminal received within a receptacle. A longitudinal guide body is received within the receptacle in engagement with the terminal. The guide body has an aperture formed therethrough, which is sized to receive a pin through the aperture. At least one fastener extends from the guide body to provide an interference fit with a housing of the receptacle. A retainer is also provided with at least one fastener extending from a guide body to fasten the retainer to the receptacle. A charge assembly is also provided with a handle housing. A shoulder extends transversely from the guide body to engage a distal end of the receptacle and to position the guide body relative to the receptacle. A sleeve extends from the shoulder at least partially over the receptacle housing. The sleeve is formed integrally with the handle housing.

Abstract: A wire terminal structure capable of fully enclosing internal components to prevent external dust or impurity from entering the insulation case to affect the normal operation thereof. The wire terminal structure includes an insulation case and a conductive holding frame disposed in the case. The case is formed with a wire socket and a press window. The conductive holding frame has an elastic holding member corresponding to the wire socket. The elastic holding member is formed with a holding mouth. A push section is disposed on the elastic holding member corresponding to the press window. A pushbutton is elastically movably disposed in the press window between the press window and the push section. The pushbutton is spaced from the case. When an external force is applied to the pushbutton, the pushbutton is elastically moved to push the push section and open the holding mouth.

Abstract: A burn-in socket includes an insulative seat with a plurality of terminal-retained passageways, a sliding member defining a plurality of terminal-receiving passageways, a driven frame and a plurality of terminal retained in terminal-retained passageways of the seat and received in the terminal-receiving passageways of the sliding member. Each of the terminal-receiving passageways defines two opposite inner sides. Each terminal includes a base portion, a board-connecting portion and a pair of clamping arm consisting of a movable arm and a static arm, the pair of clamping arms defining clamping end at tips thereof. The pair of clamping arms are located elastically against corresponding inner sides, the static arm defines a lower curved portion with a projecting end and an upper linear portion, the projecting end of the lower curved portion of the static arm elastically presses against the movable arm permanently.

Abstract: A switching electrical power contactor having a bi-blade type switch, has ferrous plates attached to the blades to increase the current carrying capacity and reduce the resistance of the switch. Flexible tangs formed at the distal end of the blades cooperate with a movable member to hold the contacts closed when the contactor is in the closed state.

Abstract: A low-profile electrical connector includes a housing having exterior perimeter sides and top and bottom surfaces, where the bottom surface is configured to extend along a user's body site and the top surface is spaced above the bottom surface. The connector also includes a side-entry guide channel disposed along the bottom surface. The channel includes an opening along the exterior perimeter side that is configured to receive an electrically conductive element. The channel is also configured to guide the electrically conductive element within the housing. The connector includes a receptacle positioned within the housing and forms an electrically conductive interface with the electrically conductive element.

Abstract: A connector that includes a male terminal which has a conductive property and a tip portion of which is formed in a bar shape, and includes a coil spring formed of a conductive wire rod with an inner diameter smaller than a diameter of the tip portion of the male terminal and that linearly extends at an end portion at which the male terminal is inserted. The male terminal is inserted into the coil spring while a force that expands an inner diameter of at least a vicinity of the end portion is applied to an extending portion, and thereafter fitted to the coil spring by releasing the force.

Abstract: The invention relates to an electrical plug connection element (1) having a contact member (16) which can be deformed in a spring-elastic manner and to which the plug connection element (1) can be electrically connected when it is plug-connected to a further plug connection element (2), characterized in that the plug connection element (1) has a clamping element (40) by means of which the contact member (16) and/or a separate spring (20) which supports the contact member (16) when contact is made can be deformed in a spring-elastic manner in such a way that the force which is required to plug-connect the plug connection element (1) to the further plug connection element (2) is reduced, and in that the action of the clamping element (40) can be removed by the plug connection element (1) being plug-connected to the further plug connection element (2), and as a result the contact member (16) can be brought into contact with the further plug connection element (2) so as to establish an electrical connection by wa

Abstract: Various embodiments provide an interconnect system for power applications. The interconnect system includes a receptacle comprising a first conductive wall. At least a second conductive wall is situated opposite the first conductive wall. The receptacle further includes a first end and a second end situated opposite the first end. A first sacrificial contact area is situated on the first conductive wall. At least a second sacrificial contact area is situated on the second conductive wall. A first conductive contact area is situated on the first conductive wall. At least a second conductive contact area is situated on the second conductive wall. The conductive contact areas are situated closer to the first end than the sacrificial contact areas. The sacrificial contact areas are configured to contact a sacrificial portion of the header prior to a conductive portion of the header contacting the conductive contact areas of the receptacle.

Abstract: A contact terminal (26ai) comprises: a pair of movable side contact pieces (26M) and (26F) which pinch or release a ball-like electrode portion (DVa) of a semiconductor device (DV); a fixed side terminal (26T) having on one end a contact point (26te) coming into contact with an electrode group (PBE) of a printed wiring board (PB); and a fixing portion (26C) which connects proximal end portions of the pair of elastic movable side contact pieces (26M) and (26F) to the other end of the fixed side terminal (26T). The fixed side terminal (26T) formed into a curved shape is elastic and has the one end thereof joined to the fixing portion (26C). The fixed side terminal (26T) is formed of a plurality of curved portions (26ta, 26tb, 26tc, and 26td) and the contact point (26te) provided continuous with one another.

Abstract: A low-profile electrical connector includes a housing having exterior perimeter sides and top and bottom surfaces, where the bottom surface is configured to extend along a user's body site and the top surface is spaced above the bottom surface. The connector also includes a side-entry guide channel disposed along the bottom surface. The channel includes an opening along the exterior perimeter side that is configured to receive an electrically conductive element. The channel is also configured to guide the electrically conductive element within the housing. The connector includes a receptacle positioned within the housing and forms an electrically conductive interface with the electrically conductive element.

Abstract: An electric connection device for connecting a conductor having at least one contact bush of a conductive material with a clearing for a contact spring and a contact spring disposed thereat which clamps a conductor plugged into the contact bush from a plug-in side against the inner wall of the contact bush wherein the contact spring is pivotable outwardly through the clearing.

Abstract: Electric connection device for connecting a conductor having at least one contact bush of a conductive material with a clearing for a contact spring and a contact spring disposed thereat which clamps a conductor plugged into the contact bush from a plug-in side against the inner wall of the contact bush wherein the contact spring is pivotable outwardly through the clearing.

Abstract: A multi-socket guide for guiding a semiconductor package to a semiconductor package testing device includes a housing, a guiding unit disposed in the housing, the guiding unit guiding the housing to the semiconductor package testing device, and a mounting unit disposed in the housing, the mounting unit receiving the semiconductor package, wherein a size of the mounting unit corresponds to a size of a ball area of the semiconductor package.

Abstract: An electrical pin or socket terminal includes a vertical tubular body portion, and a spring clip portion connected with the upper end of the body portion. The spring clip portion includes two opposed electrical contacts at least one of which is resiliently biased toward the other. A separating arrangement is operable between a separated condition retaining the contacts in separated spaced relation for longitudinally receiving therebetween a conductor bare end, and a released condition in which the contacts are released for resilient electrical engagement with diametrically opposed surfaces of the conductor bare end. In one embodiment, the spring clip portion includes a pair of parallel spaced struts the upper ends of which are reversely bent toward each other. In another embodiment, a leaf spring electrical contact biases the bare conductor end against a stationary electrical contact.

Abstract: A computer system architecture in which functionally compatible electronic components are located on modular printed circuit boards. Thus, a type of processor used by the system can be changed by replacing the printed circuit board incorporating the processor. Similarly a type of peripheral bus used can be changed simply by replacing the printed circuit board containing the peripheral controller. High-density connectors connect the circuit boards. Some embodiments of the invention use a single backplane. Other embodiments place peripheral slots on a second, passive backplane.

Abstract: An electrical contact (5) adapted for connection a BGA device to a PCB includes a pair of arm portions defining a pair of clamping portions (51, 52) at top ends thereof for corresponding solder balls of the BGA device, a C-shaped spring portion (53) extending from a bottom end of one arm portion (51) and a contacting portion (54) extending from a free end of the spring portion for touch the PCB. The spring portion opens perpendicularly to the arm portions.

Abstract: An apparatus for making electrical contact with luminous means in spotlights, which contain a glass vessel, a luminous means base and contact pins for the power supply is provided. The apparatus comprising a luminous means holder with at least two socket pairs for accommodating the contact pins of different luminous means. The socket pairs are arranged in clamping pieces, whose mutually opposite connecting faces can be removed from one another in order to accommodate the contact pins of the luminous means and can be guided towards one another in order to make electrical contact with the contact pins of the luminous means.

Abstract: A burn-in socket includes a base, a sliding plate mounted to the base and having a number of pin holes, a number of contacts secured to the base and an actuator mounted on the base. The contacts each comprise a base portion and a pair of arms received in the pin holes of the sliding plate. The actuator includes a frame and a number of actuating portion for driving the sliding plate to move in a transversal direction. The sliding plate includes a number of projections adjacent to contacts. Each projection and the pair of arms of an adjacent contact together define a receiving space and located at three sides of the receiving space, respectively.

Abstract: A socket for an electrical part, such as IC socket, to be mounted on a printed circuit board is provided with a socket body, and a plurality of contact pins are mounted to the socket body so as to electrically connect the electrical part and the printed circuit board. The contact pin includes a base portion, an elastic piece extending upward from the base portion, a lead portion extending downward from the base portion, and a contact portion formed to a tip end of the elastic piece. The lead portion is inserted into an insertion hole formed to the printed circuit board. The contact pins are inserted into the socket body of the IC socket from the lower side thereof so that the base portion of each contact pin is fitted to a base portion fitting hole portion, and the base portion is pressed by a locating board disposed to the lower side of the socket body.

Abstract: A car inside lamp adaptor device comprises an adaptor having a hollow seat and having a positive electrode and a negative electrode; a wire set having an electrode pin at one end thereof and another end of the wire set extending with two wires which are connected to the positive electrode and negative electrode; respectively; an elastic unit filling in a hollow seat and enclosing the positive electrode and negative electrode in an inner layer of the seat and being integrally formed with the seat; and a cap for receiving one end of the electrode pin, a ring in a hollow portion of the seat; one side of the seat having a via hole for receiving the wire set; two springs being installed in the hollow center of the seat; and each spring being fixed to the ring in the seat and another end thereof being fixed to the post.