A connection unit connects an electrical supply line to an exhaust-gas heater of an exhaust system. The connection unit includes a connection element having an electrically conductive connection-element body. The connection element has an exhaust-gas heater connection region in a first axial end region and has a supply-line connection region in a second axial end region. The supply-line connection region includes an end portion of the connection-element body and a radial projection adjoining the end portion. A carrier element fixes the connection unit to an exhaust-system component. The carrier element has a carrier-element opening wherethrough the connection-element body passes. A support unit axially and radially supports the connection element on the carrier element.

An electrical connector (2) comprising a quarter turn fastener (4), the quarter turn fastener (4) comprising a stud (6) having at least one helical cam slot (8) and a receptacle (10) comprising at least one cam follower (24) and a biasing means (12), the connector further comprising means for connection (14) to an electrical assembly, wherein the electrical connector has a first electrical contact surface (16) and a second electrical contact surface (17) and releasably connects the first and second surfaces in operative engagement, and wherein the electrical connector maintains a constant clamp force across the surfaces.

An electrical connector is configured to couple an electrical conductor to a support surface of an electrical device. The electrical connector includes a terminal block having a connecting aperture and a threaded aperture. The connecting aperture is configured to receive the electrical conductor. The electrical connector includes a locking fastener having threads to be receivable within the threaded aperture. The locking fastener is configured to move in a first rotational direction to secure the electrical conductor against movement relative to the terminal block. The locking fastener is configured to move in a second rotational direction to release the electrical conductor from the terminal block. The electrical connector includes a lock engaging the locking fastener in a locked position to inhibit movement of the locking fastener in the second direction. The lock disengages the locking fastener in an unlocked position to permit movement of the locking fastener in the second direction.

A clamp for a male terminal having features for preventing incorrect clamping, which comprises a main body having a ring and two jaws, that are movable toward each other for the ring to hold the terminal. An engagement element is movable in the vertical direction and to act upon the jaws to move them toward each other. A clamping member, operable to move the engagement element comprises a stem and a nut. The stem is fixed to a base body, which is pivotable relative to the main body between a first position, in which the stem is inclined with respect to the vertical and a second position, in which the stem extends in the vertical direction. In the first position, the engagement element prevents the nut from engaging a threaded portion of the stem. In the second position, the threaded portion is adapted to be engaged by the nut.

A bus bar that includes a main body having a plate shape for arranging a terminal to be electrically connected to the bus bar; and an upright provided at a side in a widthwise direction of the main body, wherein: the main body has an open hole into which a shaft of a bolt is to be inserted, and the upright has an inner surface with which a head of the bolt can come into contact in a rotational direction.

A terminal is constructed to be connected to an attachment target by a bolt, and includes a first surface, a through hole, and an asperity portion. A material for the terminal is aluminum, etc. The terminal has a Vickers hardness equal to or higher than 80 HV. A ratio S1/S2 between a first area S1 and a second area S2 while the first surface and the attachment target are connected to each other by tightening of the bolt is equal to or lower than 0.8. The first area S1 is an area of a region where the first surface is in contact with the attachment target at a pressure equal to or higher than 25 MPa. The second area S2 is an area of an annular region around the bolt. The first area S1 is equal to or larger than 5 mm.sup.2.

A connector arrangement for a wind turbine down conductor is provided, including a lightning conductor cable, a first connection element, a second connection element and a tube, wherein a first end of the cable is connected to the first connection element and a second end of the cable is connected to the second connection element, wherein the tube surrounds at least a portion of the cable between the first end and the second end of the cable, wherein the tube is fixedly attached to the first connection element and relatively movable to the second connection element.

A connecting terminal fixing structure comprising: a conductive seat, a clamping member, and a nut; the conductive seat consisting of two side plates and a top plate that are integrally formed, the top plate being connected to the top of the side plate on each side so that the conductive seat forms an n-shape, and the top plate having a perforation; the clamping member having an opening, the clamping member being located on the lower surface of the top plate and at least one snap-fitting part extending from each of the opposite sides of the clamping member; the nut having a threaded hole; wherein, said perforation, said opening, and said threaded hole being correspondingly positioned to form a through hole, facilitating the swift assembly of the terminal.

A connector includes a housing 10 to be connected to a mating connector, and two conductive unit. Each conductive unit includes a terminal, a wire 43, and an inner conductive member 40 for electrically connecting the terminal and the wire 43. A fixing portion 17 to which the inner conductive members 40 are to be fixed is provided inside the housing 10, one of the inner conductive members 40 is fixed on one side in an arrangement direction of two wires 43 in the housing 10 and the other inner conductive member 40 is fixed on the other side. Each of the two inner conductive members 40 is fixed to the fixing portion 17 by a bolt 22, 23 extending in the arrangement direction.

The invention relates to a coupling for power cables, consisting of a plug part (1) and a socket part, said plug part (1) having a basic body (2) comprising a coupling pin (3) on which a locking pin (4) is arranged, said locking pin (4) being mounted in the plug part (1) so as to be displaceable in the axial direction of the coupling pin (3), said locking pin (4) being held in a basic position towards a back end (11) of the coupling pin (3) by a spring force and, while the coupling is being locked, being moved by interlocking with a helical groove of the socket part towards the front end (12) of the coupling pin (3) and a spring device (16) being loaded in the process.