Abstract: An adapter block assembly includes two housing pieces that cooperate to hold one or more adapters therebetween. The two housing pieces are removably latched together. Labels can be placed over the latches. Certain types of adapter block assemblies are configured to receive multi-fiber plug connectors. Certain types of adapter block assemblies include securement arrangements at opposite ends thereof to aid in mounting the adapter block assemblies to frames, trays, chassis, or other such structures.

Abstract: The present disclosure describes a power cable connector. The connector includes a generally cylindrical main body having a bore therethrough, a back cover configured to be removably secured to an end of the main body, a first seal sized to fit within at least a portion of the bore of the main body, a pair of female conductor pins configured to be coupled to the inner conductors of a power cable, an insulator having a pair of inner channels sized to receive the pair of female conductor pins, wherein the insulator is configured to be removably secured to an opposing end of the main body, a second seal sized to fit within at least a portion of the insulator, an end cap, a third seal residing between the insulator and the end cap, and a locking nut configured to secure to the end cap to the insulator. Power cable connector assemblies and methods of assembling a power cable connector are also described herein.

Abstract: The invention relates to a vehicle ground-contacting element (1) comprising two shell-shaped portions (11,12) assembled together into at least one first (13a) and one second (13b) contact area such as to form a rigid hollow body, such that the first contact area (13a) is made up of a contact surface (18a) extending a first edge of the first shell (11) and a contact surface (19a) extending a first edge of the second shell (12), said two contact surfaces (18a, 19a) of the first contact area (13a) engaging with one another and extending the first edges in a first direction (X), the second contact areas (13b) being made up of a contact surface (18b) extending a second edge of the first shell (11) and a contact surface (19b) extending a second edge of the second shell (12), said two contact surfaces (18a, 19a) of the second contact area (13b) engaging with one another and extending the second edges in a second direction (Z), the first direction (X) and the second direction (Z) being oriented substantially perpendi

Abstract: A socket is provided for an LED light string and is formed by jointing two unsymmetrical casing members through thermal fusion by application of ultrasonic wave to thereby securely combine with electrical wires and a luminous element. The first and second casing members are provided with raised-and-recessed inter-engageable structures including holes and protrusions and multiple tiny bosses that is thermally fusible through application of ultrasonic wave for adhesion purposes. The first casing member includes a receiving channel for receiving electrical wires therein and the second casing member includes hold-down blocks and holding blocks for holding the electrical wires in position.

Abstract: Kits, devices, and methods are provided for increasing a retaining force on a first device configured to mate with a second device to establish an electrical connection between the first and second devices. The first device can be, for example, a plug-type electrical connector (15), and the second device can be, for example, a receptacle connector. Magnets (100) can be mounted on or proximate one of the connector (15) and receptacle (16), and a ferromagnetic element in the form of a plate member (14) can be mounted on or proximate the other of the connector (15) and receptacle (16) so that magnetic attraction between the magnetic elements (100) and the ferromagnetic element (14) urges the connector (15) toward the receptacle (16) when the connector (15) and the receptacle (16) are mated. Existing electrical connectors can thus be retrofit so as to increase the retaining force thereon.

Abstract: A design of light string comprises a bulb socket, a pair of conductive wires, and LED electrically disposed onto the bulb socket. The LED is incorporated with a pair of legs which are alternatively in contact with the pair of conductive wires, and then are sandwiched between a pair of first and second casings which jointly configures the light bulb. This configuration simplifies the assembling of the conductive wires and LED such that no need of solder or glue or contacts.

Abstract: An electrical connection system for a vehicle, comprising an elongated dielectric component (3) equipped with at least one electrode electrically connected to electrical contact pads (7), two dielectric half-shells (14) assembled face-to-face, electrical contact fingers (19) connecting with the pads, interposed between at least one half-shell and the component, a spring collar (21) surrounding the half-shells (14) to provide for holding them in position. The half-shells (14) include at the proximal part a pivot (23) such that the half-shells open angularly relative to one another, the half-shells (14) together include on the outside a bearing surface for a tubular body providing for bringing the half-shells together.

Abstract: A device and method for reinforcing a connector and a portion of cable adjacent to the connector is herein disclosed and claimed. The device of the present invention is comprised of a body that grips and secures a connector and a portion of cable adjacent to the connector. The body has a longitudinal passage therethrough, the passage having a first section and a second section. The first section is dimensioned to receive the connector and the second section is dimensioned to receive the portion of cable. The body may be comprised of two corresponding clam shell halves which can be fastened together using common fasteners, joined with an adhesive, or otherwise frictionally or chemically joined. The body may also be injection molded around the connector and cable.

Abstract: The present invention provides a retractable adapter for connecting a towed vehicle to a towing vehicle. The retractable adapter may include a lower housing, an upper housing and a retractable mechanism to store the wiring harness when not in use with the towed vehicle. The lower housing may be attached to the towing vehicle. The adapter may include a rotating disc assembly, a wire guide assembly and an electrical connector or wiring harness that may be coiled around the wire guide assembly. The adapter may also include a circuit tester with light emitting diodes (LEDs) and a backup alarm. In addition, the adapter may mate a seven-way blade connector to a four-flat connecter harness.

Abstract: A mounting bracket for a trailer wiring connector is described. The mounting bracket may attach the electrical connector to a cross bar of a towing vehicle. The mounting bracket may include an upper housing and a lower housing. The upper housing may include a mounting aperture and a plurality of slots. The lower housing may include a threaded aperture and a plurality of tabs. The tabs may be capable of engagement with the slots to secure the upper housing to the lower housing. The lower housing may also include a clamping fastener, such as a set screw, that may be capable of engagement with a threaded aperture, wherein the set screw may be capable of clamping engagement with the electrical connector. The mounting bracket may also include a cover capable of engagement with the electrical connector.

Abstract: The present invention provides an electrical socket comprising a wafer defining a plurality of slots extending between an upper face and a lower face of the wafer; an upper frame mounted on the upper face of the wafer, a lower frame mounted on the lower face of the wafer, and a plurality of contacts each having a base portion floating received in corresponding slots. The upper frame defines a plurality of interior walls to form a plurality of first openings. The lower frame defines a plurality of interior walls to form a plurality of second openings. The contact comprises an upper contacting arm extending through a corresponding first opening and beyond an upper surface of the upper frame, and a lower contacting arm extending through a corresponding second opening and beyond a lower surface of the lower frame.

Abstract: A waterproof connector for a flexible substrate includes: a flexible substrate which includes an insulating film with a conductive pattern formed thereon; a connection terminal joined to the conductive pattern at a terminal section of the flexible substrate; a housing which accommodates the connection terminal; a retainer which includes a vertically assembled pair of members, a forward end thereof holding the connecting section of the conductive pattern and the connection terminal and a rear end thereof surrounding the flexible substrate; a hot-melt adhesive provided on an inner circumference of the retainer at non-joint areas with the flexible substrate and provided on an outer circumference of the retainer so as to make the flexible substrate and the retainer adhere closely to each other; engaging member provided in the outer circumference of the retainer; and receiving member provided in the housing. The engaging member and the receiving member are engaged together to fix the retainer and the housing.

Abstract: An electrical connector for supplying electrical power from a fixed member to a movable member that moves with respect to the fixed member, the movable member bearing an electrical load. The electrical connector has a first connector part fixed to the fixed member and connected to a source of electrical power. A second connector part is fixed to the movable member and is connected to the electrical load. The first connector part and second connector part are movable into electrical engagement when the movable member is moved adjacent the fixed member. The first connector part has a first housing, a movable enclosure in the housing, having first external electrical contacts, and a movable carriage bearing second electrical contacts. The movable carriage has first magnets or magnet attractive components, the second contacts being movable with the carriage by a first magnetic force into electrical engagement with the first contacts.

Abstract: A contact sub-assembly is provided for an electrical connector. The contact sub-assembly includes a base configured for mounting to a mating component. The base includes a pair of opposite side surfaces. A pair of separate contact support members are mounted on the base. Each contact support member holds a separate set of electrical contacts. Each contact support member includes a mounting portion engaged with a corresponding one of the side surfaces of the base such that a portion of the base extends between the mounting portions of the contact support members. The sets of electrical contacts held by the contact support members cooperate to define a mating interface for a mating connector.

Abstract: The invention relates to a wall outlet comprising a base part having at least one first opening which is used to receive an electric cable, and a cover. The cover or the base part comprise at least one second opening wherein an electric socket can be inserted. A cable guiding element is arranged in the base part, said cable guiding element enabling the electric cable to be guided in a defined manner from the first opening to the second opening.

Abstract: The invention relates to a cable connector with a housing including a base extending along a longitudinal axis of the cable connector. The base includes a cable entry portion for accommodating a ferrule system of a cable and a further portion extending from said cable entry portion along said longitudinal axis. The further portion includes one or more mounting structures. The base also includes a housing part with one or more mounting elements adapted to cooperate with said mounting structures to mount the housing part to the base to complete said housing at said further portion. The mounting structures and mounting elements are structured such that said housing part is forced towards said base when said housing part is moved along said longitudinal axis from a mounting position to a mounted position. Accordingly a tight fitting and easily assembled cable connector is obtained.

Abstract: An electrical connector module assembly is provided and includes first and second shells that mate together along an interface extending along a length of the shells. The first and second shells form a cavity therebetween that extends along the length of the shells. The cavity is configured to hold an electrical component therein, and the first shell has an interior surface. The module assembly also includes a shielding element that has a major body located along the interior surface of the first shell. The shielding element also includes a spring member that is coupled to the major body and located within the interface. The spring member is compressed between the first and second shells.

Abstract: An electrical connector assembly (100) includes a connector holder (2) including a low cover (21) engaging with an up cover (22) to define a hollow portion; a number of connectors (11, 12, 13, 14, 15) being received in the hollow portion of the connector holder; a metal shell (4) enclosing a receiving space to accommodate the connector holder (2) and at least one cable retainer (31) extending rearward from a back edge of the connector holder (2).

Abstract: A connector cover (14) holds a corrugated tube (15) surrounding wires (W) drawn out from the rear side of a housing (12) and is mounted on the rear side of the housing (12). The cover (14) has first and second cover shells (29, 30) to be assembled with each other. The cover shells (29, 30) include tube holders (28) capable of holding an end portion of the corrugated tube (15) therebetween. The first cover shell (29) includes locks (49), and the second cover shell (30) includes lock pieces (50) engageable with the locks (49). The first cover shell (29) has lock-piece protecting portions (54) to be arranged adjacent to leading end corners (53) of the lock pieces (50) corresponding to the tube holder (28) and projecting more outward than the lock pieces (50) in the thickness directions thereof.

Abstract: A Universal-Serial-Bus (USB) device includes a PCBA mounted inside a plastic housing molded from a hard plastic (e.g., PC), and includes a handle portion mounted over a body section of the PCBA, and a plug support portion that is snap-coupled onto the housing and disposed under a plug section of the PCBA. The plug shell portion of the housing is integrally connected to (i.e., molded at the same time as or connected by way of molding to) the handle portion, and combines with the plug support structure extending under the plug section of the PCBA to form a structural arrangement similar to a conventional male USB connector plug that allows access to metal contacts formed on the PCBA, but without having the plug shell soldered to the PCBA.

Abstract: An electrical connector is disclosed comprising: an insulating main body provided with a first fixture block and a second fixture block on two ends of its side; and a metal housing disposed on the exterior of the insulating main body and provided with a first through hole and a second through hole corresponding to the first fixture block and the second fixture block to interfere one another, such that a clasping structure with at least two opposite clasping directions is formed.

Abstract: An adapter for power supply is disclosed. The adapter comprises a body containing a peg module connected a connector of a plug, characterized in that one side of the body of the adapter is a common socket engaged with an engaging slot formed on the housing, the top portion of the engaging slot is a peg slot for the peg element at the bottom of the connector to align with the peg module at the interior of the body. The peg module is positioned within the interior of the body and the connector of various specification has a common plug for connection with a protruding peg of the adapter.

Abstract: A device (10) is shown and described for at least indirectly connecting a light fixture with a power track (11) and having a housing (38) holding at least one angularly movable control shaft (21 or 22) and formed of at least two housing shells (34a and 34b) formed of dielectric material, in particular plastic. The novelty is that at least a first housing shell (34b) is provided with a retaining formation (36a, 36b, 36c, 36d, 36e, 36f, or 36g) that cooperates with the control shaft (21 or 22) and/or with a second housing shell (34a).

Abstract: A connector assembly configured to engage a motor connector having a plurality of contacts is described. The connector assembly includes a plurality of receptacle terminals and first and second housing portions each having channels formed therein for insertion of the receptacle. The channels include an end further including a slot formed therein where the channels are configured to engage respective sides of the receptacle terminals along their longitudinal axis. The slots define a rectangular opening for insertion of a respective tab terminal into each respective receptacle terminal. Each receptacle terminal includes a wire insulation engaging segment, a wire engaging segment, and a receptacle portion.

Abstract: The present disclosure relates to a connector having a connector body. A housing mounts over the connector body. The housing is adapted for securing the connector to another element such as a piece of telecommunications equipment.

Abstract: A Universal-Serial-Bus (USB) device includes a PCBA mounted inside a plastic housing molded from a hard plastic (e.g., PVC), and includes a handle portion mounted or molded over a body section of the PCBA, and a plug portion mounted or molded over a plug section of the PCBA. The plug portion of the housing is integrally connected to (i.e., molded at the same time as) the handle portion, and includes a plug substrate extending under the plug section of the PCBA and a plug shell that extends over the plug portion, forming a structural arrangement similar to a conventional male USB connector plug that allows access to metal contacts formed on the PCBA, but without having the plug shell soldered to the PCBA.

Abstract: A socket assembly with a cord sorter includes a multi-socket unit and a sorter. The multi-socket unit provides a plurality of sockets for engaging with respective plugs leading respective cords. The sorter is used to provide a gathering structure for collect the cords in order and thus can make the cords easy to be managed.

Abstract: A plug housing (5) includes a first housing part (10) and a second housing part (12) which rest at each other along a parting line (14), and a cable passage (9) for a cable (8) from an interior space of the plug housing (5) towards outside. The parting line (14) extends in the region of the cable passage (9). The plug housing further includes a sealing insert (34) arranged in the cable passage (9). The sealing insert (34) is provided with a slot (44) so that it can be slipped on a preassembled cable (8). The sealing insert (34) is also arranged such that the slot (44) has an offset with respect to the parting line (14).

Abstract: A connector cover is formed by combining a first half cover and a second half cover. A cable guide is formed to have a pipe form by combining two cable half guides each having a semicircular cross section. The cable guide envelopes and guides a part of a cable leading out from the connector cover. The two cable half guides are coupled by being engaged with each other at one end, and are coupled with each other and attached detachably to the connector cover by being held between the first half cover and the second half cover at the other end.

Abstract: A structure of a power line fixing module for an electronic apparatus. The structure includes an electronic-apparatus housing having a first side plate having a first fixing hole, a power line having a connector at one end thereof, a fixing medium cooperating with the connector of the power line for fixing the connector of the power line in the first fixing hole of the first side plate, and at least a fixing element for fixing the fixing medium on the first side plate.

Abstract: A cable end connector assembly (10) includes an insulative housing (12), a plurality of contacts (130) received in the insulative housing, a spacer (13) mounted to a rear end of the housing, a cable (14) comprising a plurality of conductors (140) electrically connecting with corresponding contacts, a casing (15) over-molded with the insulative housing and the cable, and a locking member (16). The locking member comprises a retaining section (163) secured with the casing, a main section (160) extending forwardly from the retaining section, and a locking section (161) extending forwardly from the main section. The locking section has a resilient tab (1611) resiliently abutting against the casing and a pair of latch portions (1610) for locking with corresponding portions of the complementary connector.

Abstract: An electrical connector (1) for use with a mating connector includes a base member (10), a cover member (12) and a terminal holder (14). The base member includes a base frame (114), a mating frame (117) integrally formed with the base frame at a front end (105) thereof and an engaging opening (115) defined in middle of upper walls of the base frame and the mating frame. The cover member includes a rib (131) at a front end thereof and a protrusion (132) extending forwardly from the rib. The terminal holder is assembled between the base member and the cover member and includes an insulative housing (141), a plurality of terminals (143) received in the housing and a tongue board (146) extending forwardly from the housing into the mating frame. The mating frame and the protrusion together form a mating interface (15) with the tongue board received therein for accommodating insertion of the mating connector, whereby the electrical connector has good mating performance.

Abstract: An electrical plug includes a first insulating body, a first prong extending from one end of the first insulating body, a second insulating body, and a second prong extending from one end of the second insulating body. The first insulating body and the second insulating body are separably held together so as to enable the first prong and the second prong to fit into the electrical outlets of various specifications.

Abstract: A waterproof and heat-dissipating structure of an electronic apparatus including a circuit board, an input element and an output element is disclosed. The structure includes an aluminum-wrapped housing having at least four adjoining surfaces for defining a space, a first opening end and a second opening end, wherein the space is used for accommodating the circuit board, a first lateral plate fixed to the aluminum-wrapped housing, covering the first opening end and having a first hole for fixing the input element therein, and a second lateral plate fixed to the aluminum-wrapped housing, covering the second opening end and having a second hole for fixing the output element therein.

Abstract: An electrical connector assembly comprises a base (10), a cover (20) assembled to the base, a cable (40) and a U-shaped strain relief (50). The base and the cover each define a first and second opening (17, 27). A pair of channels (173) is defined on opposite sides of the first opening. The cable is received in the first and second opening and has a metal shield (43) enclosing thereof. The strain relief has a bight (51), a pair of intermediate portions (52) extending obliquely from opposite lateral sides of the bight, and a pair of legs (54) extending downwardly from bottom ends of the intermediate portions. The strain relief further has a spring tab (53) extending inwardly and electrically contact with the metal shield of the cable. The legs are received in the channels of the base and have two rows of barbs (55) formed on opposite edges engaging with inner surfaces of the channels.

Abstract: An electrical connector (1) comprises an upper housing (2), a bottom housing (3) and a terminal module (4). The upper housing and the bottom housing together define a space and a mating port (20) positioned near the space. The terminal module has a base (40), a tongue (41) extending in the mating port from the base in a mating direction, and a plurality of signal terminals (7, 8) and grounding terminals (5, 6) therein. The signal terminals are disposed opposite sides of the tongue in pairs. A square hole (418) is formed in the tongue and aligned with every two opposite signal terminals.

Abstract: An electrical connection system adapted to be environmentally sealed by mounting a conductor block having at least one electrical conductor within a port extending through an electrical component. A first cover portion is telescopically engaged with the conductor block and has at least one wire channel formed therein. A seal is disposed against and extends about the periphery of the front portion of the non-conductive block. A second cover portion is configured to sealingly mate with the first cover portion and configured to engage the non-conductive block whereby electrical leads are retained.

Abstract: The invention is an electromagnetic shielding component for increasing the effect of electromagnetic shielding at the rear end of an electronic connector. The metal shield shell can be closely connected to the metal shield sheet of a cable through the design of many adjacent strip-like tentacles at the rear end of an electronic connector. Therefore, the assembly precision for the shield shell and the cable can be increased to produce a rear end electromagnetic shielding component with the advantages of easy assembly and prevention of electromagnetic wave leakage.

Abstract: In the present invention, a protective cover is provided with, a base bottom portion and a cover portion which is disposed in the base bottom portion through a hinge. The protective cover can be attached to a connector so as to be fitted with a through-lock portion of the connector and the cover portion is then closed. The base bottom portion is formed in a gutter-shape and the rear end side of the base bottom portion is partially closed by a closing portion. In the present invention, a protective cover is also provided with, a cylindrical cover main body to be fitted with a connector, and a pair of opening-and-closing members disposed on the cover main body through hinges. The protective cover further includes securing holes for securing the opening-and-closing members to securing projections disposed on the cover main body, and securing pawls and securing frames for engaging the opening-and-closing members with each other.

Abstract: The invention is directed to apparatus for making an accessible connection between a cable and a coupler, wherein electrical wires extend between the cable and the coupler. A removable stop is provided which is adapted to engage the cable and the coupler to hold the cable and the coupler apart to form a gap therebetween wherein the electrical wires extend between the cable and the coupler by way of the gap. A sleeve is provided which is movable between a closed position wherein the sleeve engages the cable and the coupler and surrounds the wires and the stop, and an open position wherein the gap is exposed and the wires are accessible. Also provided is a fastening mechanism for removably fastening the sleeve in the closed position and for allowing the sleeve to be moved from the closed position to the open position.

Abstract: An electrical connector (1) includes an interconnecting part (10), a pair of upper and lower base plates (20) enclosing the interconnecting part, and a latching mechanism (30) attached to the lower base plate for latching and releasing a complementary connector. The interconnecting part has a dielectric body (12) and an circuit board (14) attached to the dielectric body. The circuit board forms on opposite ends thereof a plurality of gold fingers (17) for mating with the complementary connector and a plurality of soldering pads (19) for electrically connecting to corresponding conductive wires of a cable.

Abstract: A housing for an electronic control device in vehicles comprises a bottom part (10) which has a metallic baseplate (12), and a cover part (14) made of plastic. The bottom part (10) has a front wall (16) made of plastic that rises up from the baseplate and to which a plug collar (18) is integrally molded. The plug collar (18) defines an accommodation for a contact pin carrier (28) formed as a flat strip with through holes for passing contact pins (32). The contact pin carrier (28) can be inserted into the plug collar (18) from inside of the housing.

Abstract: An electrical connector is provided having a conductive receptacle assembly with walls including grounding contacts, and a conductive plug member for connection to the receptacle assembly. The plug member includes peripheral surfaces that electrically engage grounding contacts on the receptacle assembly. A latch assembly is mounted to the plug member and includes a spring biasing face place that lockably engages one wall of the receptacle assembly. The latch assembly is conductive to afford a grounding correction between the plug member and receptacle assembly along one peripheral wall therebetween. The plug is formed with upper and lower shells, each of which is formed as a unitary structure, such as during a diecast molding procedure. The upper and lower shells are conductive and formed with substantially no openings therein to define a chamber therebetween offering significant EMI shielding characteristics. A PC equalization board is enclosed within the upper and lower shells.

Abstract: A cable connector comprising a housing, which forms a shielding and/or which is provided with a shielding, and at least one connector module placed within the housing, which module comprises a body of an electrically insulating material, a circuit substrate comprising a grounding layer and one or more terminals mounted on the circuit substrate. The shielding of the housing is electrically connected to the grounding layer of the circuit substrate, thus improving the grounding of the entire cable connector.

Abstract: A joint socket device for memory cards provides a common lower base with an upper covering to offer a common space for receiving a smart media card (SMC), a multimedia card (MMC), a secure digital memory card (SD) and a memory stick (MS). The joint socket device is available for being inserted with four different memory cards without a need of offering four different socket devices so as to save contact points thereof, reduce the size occupied thereof, and facilitate the use thereof, respectively.

Abstract: A connector housing comprises upper and lower covers mated to form the housing. Upper and lower shells are integrally molded with the upper and lower covers, wherein at least a portion of one of the upper and lower shells protruding over the corresponding cover.

Abstract: Wiring components of a relocatable wiring system having respectively identical male and female terminal housings used respectively in male and female ports of said wiring components, the relocatable wiring system formed of the respective wiring components having particular utility in above-ceiling air handling spaces for electrical connection of lighting fixtures inter alia. Each male port of each wiring component configured according to the invention includes a male terminal housing including latching structure preferably formed of a plenum-rated polymeric material, each male port having a male terminal housing which is identical to the male terminal housing in each of the other male ports. Similarly, each female port of each wiring component includes a female terminal housing formed of polymeric material with all of the female terminal housings being identical.

Abstract: Wiring components of a relocatable wiring system having respectively identical male and female terminal housings used respectively in male and female ports of said wiring components, the relocatable wiring system formed of the respective wiring components having particular utility in above-ceiling air handling spaces for electrical connection of lighting fixtures inter alia. Each male port of each wiring component configured according to the invention includes a male terminal housing including latching structure preferably formed of a plenum-rated polymeric material, each male port having a male terminal housing which is identical to the male terminal housing in each of the other male ports. Similarly, each female port of each wiring component includes a female terminal housing formed of polymeric material with all of the female terminal housings being identical.

Abstract: Wiring components of a relocatable wiring system having respectively identical male and female terminal housings used respectively in male and female ports of said wiring components, the relocatable wiring system formed of the respective wiring components having particular utility in above-ceiling air handling spaces for electrical connection of lighting fixtures inter alia. Each male port of each wiring component configured according to the invention includes a male terminal housing including latching structure preferably formed of a plenum-rated polymeric material, each male port having a male terminal housing which is identical to the male terminal housing in each of the other male ports. Similarly, each female port of each wiring component includes a female terminal housing formed of polymeric material with all of the female terminal housings being identical.

Abstract: The invention relates to a shell for a connector shell, the shell being constituted by two mutually snap-fastenable half-shells, the two half-shells being substantially identical and being made of a castable and electrically-conductive metal alloy. Each half-shell comprises:a main wall including two mutually parallel side edges;two mutually parallel ribs parallel to said edges, disposed between said edges, and projecting from said main wall;a fixing tab extending from the first edge of said main wall parallel to said ribs and terminated by a hook facing towards said ribs; anda fixing notch formed in the second edge of said main wall and parallel to said ribs, the notch of one half-shell being suitable for co-operating with the hook of the other half-shell;the rib closer to the first edge having a ridge defined by a sloping surface facing said fixing tab, the other rib having a ridge defined by a sloping surface facing towards the first rib.