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 anti-corrosion terminal material including a base material made of copper or copper alloy and a coating film laminated on the base material: the coating film includes: a first coating film, provided with a zinc layer made of zinc alloy and a tin layer made of tin or tin alloy which are laminated in this order, and formed at a planned core contact part; and a second coating film including the tin layer but not comprising the zinc layer, which is provided at a planned contact part being a contact part when the terminal is formed: and the zinc layer has a thickness not less than 0.1 μm and not more than 5.0 μm and zinc concentration not less than 30% by mass and not more than 95% by mass, and has any one or more of nickel, iron, manganese, molybdenum, cobalt, cadmium, lead and tin as a balance.

An anti-corrosion terminal material including a base material made of copper or copper alloy and a coating film laminated on the base material: the coating film includes: a first coating film, provided with a zinc layer made of zinc alloy and a tin layer made of tin or tin alloy which are laminated in this order, and formed at a planned core contact part; and a second coating film including the tin layer but not comprising the zinc layer, which is provided at a planned contact part being a contact part when the terminal is formed: and the zinc layer has a thickness not less than 0.1 μm and not more than 5.0 μm and zinc concentration not less than 30% by mass and not more than 95% by mass, and has any one or more of nickel, iron, manganese, molybdenum, cobalt, cadmium, lead and tin as a balance.

An electric energy transmission aluminum part and a machining process therefor including an aluminum conductive device (1) and an aluminum cable, with the aluminum cable including an aluminum conductive core (2) and an insulation layer (3) cladding a surface of the aluminum conductive core (2). An exposed section of the aluminum conductive core (2) with the insulation layer (3) stripped from the aluminum cable and at least part of the aluminum conductive core (2) clad with the insulation layer (3) are crimped inside the aluminum conductive device (1). A transition section (4) with a trapezoidal axial cross-section is provided at a junction between the insulation layer (3) and the exposed section of the aluminum conductive core (2) in the aluminum conductive device (1). Taking the transition section (4) as a demarcation point, an inner diameter of an end of the aluminum conductive device (1) that is crimped with the insulation layer (3) is greater than an inner diameter of an end of the aluminum conductive device (1) that is crimped with the aluminum conductive core (2). At least one concave structure is provided on a periphery of the aluminum conductive device (1). The concave structure provided on the surface of the aluminum conductive device (1) can effectively prevent the aluminum conductive device (1) from moving relative to a clamp, so as to solve the problem of displacement or rotation of the aluminum conductive device (1) in the clamp during welding, and improve the welding efficiency and the yield.

The wires 20 each include a stranded conductor 21, and an insulation covering 26 that covers the stranded conductor 21. One end portions of the plurality of wires 20 are held by a first holding portion 31 of the first terminal block 30, and the other end portions of the plurality of wires 20 are held by a second holding portion 41 of the second terminal block 40. A connection orientation of the wire harness 10 is an orientation in which the plurality of wires 20 are bent between the first holding portion 31 and the second holding portion 41, and in which a twist occurs in the plurality of wires 20. A stranding direction of the stranded conductors 21 of half or more of the plurality of wires 20 is a direction in which stranding of the stranded conductors 21 is tightened by the twist.

The wires 20 each include a stranded conductor 21, and an insulation covering 26 that covers the stranded conductor 21. One end portions of the plurality of wires 20 are held by a first holding portion 31 of the first terminal block 30, and the other end portions of the plurality of wires 20 are held by a second holding portion 41 of the second terminal block 40. A connection orientation of the wire harness 10 is an orientation in which the plurality of wires 20 are bent between the first holding portion 31 and the second holding portion 41, and in which a twist occurs in the plurality of wires 20. A stranding direction of the stranded conductors 21 of half or more of the plurality of wires 20 is a direction in which stranding of the stranded conductors 21 is tightened by the twist.

A connection structure of a shielded terminal 10 and a shielded electrical wire 60 includes a shielded electrical wire 60 including a shield layer 63; and a shielded terminal 10 including an outer conductor 20 connected to the shield layer 63, wherein the outer conductor 20 is formed by assembling a first shell 21 including an electrical wire connection portion 30, 31, 32 that comes into contact with an outer circumference of the shield layer 63, and a second shell 22 including a compression bonding portion 44 that is crimped to an outer circumference of the electrical wire connection portion 30, 31, 32, and a catch portion 36 that catches on an outer circumferential surface of the shield layer 63 is formed in the electrical wire connection portion 30, 31, 32.

A connection structure of a shielded terminal 10 and a shielded electrical wire 60 includes a shielded electrical wire 60 including a shield layer 63; and a shielded terminal 10 including an outer conductor 20 connected to the shield layer 63, wherein the outer conductor 20 is formed by assembling a first shell 21 including an electrical wire connection portion 30, 31, 32 that comes into contact with an outer circumference of the shield layer 63, and a second shell 22 including a compression bonding portion 44 that is crimped to an outer circumference of the electrical wire connection portion 30, 31, 32, and a catch portion 36 that catches on an outer circumferential surface of the shield layer 63 is formed in the electrical wire connection portion 30, 31, 32.

An electrical crimp ferrule includes a circumferential center portion, a first circumferential flank connected to the center portion, and a second circumferential flank connected to the center portion. The circumferential center portion integrally connects the first and second circumferential flanks. At least one crimp diameter compensation element extends from at least one of the first circumferential flank or the second circumferential flank and is adapted to engage with an electrical cable having a non-circular cross section in a crimped state of the ferrule.

An electrical connection terminal and an electrical connection assembly are disclosed. The electrical connection terminal has a base, and a plurality of tabs connected to the base. The plurality of tabs are separated from each other, and each of the plurality of tabs is adapted to mate with a mating terminal in a plug-in manner. In the present invention, the electrical connection terminal adopts a plurality of parallel tabs, so the length of the electrical connection terminal and the current flow path through the electrical connection terminal are reduced. Therefore, the electrical connection terminal of the present invention has low body resistance, less heating and is more suitable for high current applications.