A terminal unit 1 includes: a terminal fitting 10; and a holder 50. The terminal fitting 10 includes a connection portion 10A in which a bolt insertion hole 10C is formed, and the holder 50 includes a main body portion 50A that is configured to be attached to the connection portion 10A and a detent 50B that protrudes from the main body portion 50A and prevents the terminal fitting 10 from rotating.

Provided is a female electrical connector referred to as a retaining ring terminal. The retaining ring terminal is a one-piece electrical connector having a crimp style cable connector portion on one end for receiving an electrical cable and a female post connector portion on a second end for receiving a post or male electrical connector. The female post connector portion includes a flat planar ring and a plurality of tabs (separated by a plurality of grooves) which extend from the inner surface of the flat planar ring inwardly towards the opening of the female post connector portion. The female post connector portion also includes a groove which extends through a flat planar ring, referred to as a ring groove which becomes a tab groove and has the same shape as the other tab grooves. A pair of ring holes are positioned on opposite sides of the ring groove on the flat planar ring.

Provided is a female electrical connector referred to as a retaining ring terminal. The retaining ring terminal is a one-piece electrical connector having a crimp style cable connector portion on one end for receiving an electrical cable and a female post connector portion on a second end for receiving a post or male electrical connector. The female post connector portion includes a flat planar ring and a plurality of tabs (separated by a plurality of grooves) which extend from the inner surface of the flat planar ring inwardly towards the opening of the female post connector portion. The female post connector portion also includes a groove which extends through a flat planar ring, referred to as a ring groove which becomes a tab groove and has the same shape as the other tab grooves. A pair of ring holes are positioned on opposite sides of the ring groove on the flat planar ring.

An appliance power connector includes a terminal block having a base. The base includes an upper surface and a lower surface. The base includes a pocket. The terminal block includes an upper shroud and a lower shroud. The upper shroud has upper shroud walls extending from the base forming an upper chamber above the upper surface. The lower shroud has lower shroud walls extending from the base forming a lower chamber below the lower surface. The appliance power connector includes a power terminal coupled to the terminal block. The power terminal includes a main body, an upper stud extending from a top of the main body and a lower stud extending from a bottom of the main body. The main body is received in the pocket. The upper stud is located in the upper chamber above the base for connection to an upper power cable terminal. The lower threaded stud is located in the lower chamber below the base for connection to a lower power cable terminal.

A connector system includes a barrel and a lug connector arranged at an end of the barrel. The lug connector has a first contact and a second contact separated by a clearance. A substrate is arranged within the clearance and is electrically and mechanically coupled to the lug connector over an electrical conduction surface area. The electrical conduction surface area extends over a portion of both the first contact and the second contact.

A wiring harness is provided with a first wire member including a first terminal and a first wire and a protector for accommodating the first wire member. The protector includes a protector body, a bolt and a restricting portion. The protector body has a bottom wall extending in a length direction, two side walls projecting from both side edges of the bottom wall and facing each other, and an opening formed by the two side walls and facing the bottom wall. The bolt projects from the protector body and is inserted into a through hole of the terminal. The restricting portion covers only a part of the first wire member closer to a side opposite to a tip side of the first terminal than the through hole in the length direction, and restricts a movement of the first wire member in a projecting direction of the bolt.

A connector with electric wires includes a housing mounted to a vehicle body, two terminals housed in the housing, and two electric wires each connected to the terminal. The two electric wires are drawn out from openings of the housing with the two electric wires disposed in a longitudinal direction (arrow Y direction) and extended straight in a direction (arrow X direction) orthogonal to the longitudinal direction of the terminal. Inside the housing, the two terminals and the two electric wires are arranged on the same plane.

A wire connection terminal and a welding joint. The novel wire connection terminal includes a terminal substrate (1) provided with a fixing portion for connecting with an electric device and a connecting portion for connecting with a wire (2). The fixing portion is provided with an assembly structure for being assembled with the electric device. The connecting portion is provided with a boss (13) formed by punching the connecting portion for connecting with the wire (2). The wire connection terminal is used for directly welding processing by matching a welding fixture, so as to improve the processing accuracy of the terminal, and avoid brittleness and breakage caused by stress concentration of the terminal.

A wire connection terminal and a welding joint. The novel wire connection terminal includes a terminal substrate (1) provided with a fixing portion for connecting with an electric device and a connecting portion for connecting with a wire (2). The fixing portion is provided with an assembly structure for being assembled with the electric device. The connecting portion is provided with a boss (13) formed by punching the connecting portion for connecting with the wire (2). The wire connection terminal is used for directly welding processing by matching a welding fixture, so as to improve the processing accuracy of the terminal, and avoid brittleness and breakage caused by stress concentration of the terminal.

Plug-in connection, comprising a plug-in connector (1) and a mating plug-in connector that can be plugged together with the latter, wherein the plug-in connector (1) has a housing (2) into which an electrical conductor (3) is inserted, wherein the electrical conductor (3) is electrically contacted with a contact partner (4), likewise arranged in the housing (2), by means of their surfaces coming to rest on each other, wherein the contact partner (4) is contacted, in particular via its circumferential end face (5), with a contact partner of the mating plug-in connector in such a way that the end faces come to rest on each other, and the plug-in connector (1) and mating plug-in connector are plugged together, wherein this plugging-together is effected and supported by a tightening means, in particular a screw (6), wherein an insulation, in particular an insulating element (12) or a coating of the screw (6), is provided, wherein this insulation has the effect that the crew (6) does not touch voltage-carrying parts such as the electrical conductor (3) and/or the contact partner (4).