JPS5937966Y2 - crimp terminal - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a crimp terminal for connecting a plurality of electric wires.

The problem in connecting crimp terminals and electric wires is the degree of compression of the wire barrel in the state in which the wire is crimped.

In general, whether the compression rate is too high or too low, the mechanical strength and electrical conductivity of the crimped portion will decrease.

One possible cause of the excessive compression ratio is that the sheath of the electric wire gets into the wire barrel.

Generally, this condition is checked by visually checking through the window to see if the boundary between the exposed core wire part and the M covering part is located between the insulation barrel and the wire barrel. In crimp terminals, there are a certain number of wires that cannot be seen through the window, and in this case, the mechanical strength of the crimp part,
Electrical conductivity could not be guaranteed.

In view of the above-mentioned drawbacks, the present application provides a window at the boundary between the wire barrel and the insulation barrel, so that the position of the boundary between the exposed core wire and the sheathing section of the electric wire, which cannot be seen through the window, can be visually observed through the window. This is an attempt to eliminate the shortcomings.

As an example of the implementation of the present invention, a crimp terminal used to electrically connect a main line and a branch point at a branch point in order to branch off another circuit from a main circuit will be explained below.

Reference numeral 1 denotes a crimp terminal body used at the above-mentioned branch point, which is formed by a wire barrel 2 and an insulation barrel 3.

The boundary part 4 between the wire barrel 2 and the insulation barrel 3 has its side walls 5, 5' lower than the respective side walls 6, 6' and 7, 7' of the wire barrel 2 and the insulation barrel 3, and is located in the upper part thereof. Window-8
has been formed.

Window 8 is used to check whether the boundary between the exposed core and the sheath of the wire crimped to the crimp terminal body 1 is in the appropriate position (between the wire barrel and the insulation barrel). .

The wire barrel 2 has an appropriate number of protrusions 9, 9', 9'', etc. running to both sides on the inner surface by embossing, and the upper edges of the side walls 6, 6' are narrower than the outer side. At least a sharpened portion 10.10' is formed in this portion.

The protrusions 9, 9', 9'', etc. are used to ensure that the wire barrel 2 holds the core wire housed in the wire barrel 2, and to increase the strength of the wire barrel 2 itself. .

The insulation barrel 3 has both side walls 7. 7' is gradually narrowed upward to form a substantially triangular shape, with the apexes being shifted from each other, and a single protrusion 11 formed by embossing is provided on the inner surface of the triangular shape.

The protrusion 11 serves to reliably grip the covering part housed in the insulation barrel 3 and to increase the strength of the insulation barrel 3 itself.

The wire barrel 2 and the insulation barrel 3 each have a size that corresponds to the cross-sectional area of the overlapping core wires and coatings of the plurality of electric wires accommodated in each of the wire barrels 2 and insulation barrels 3, respectively.

Therefore, the boundary part 4 formed between the wire barrel 2 and the insulation barrel 3 narrows toward the wire barrel 2 and expands toward the insulation barrel 3, so that they continue to form.

Reference numeral 12 denotes a window bored in the boundary portion 4 to visually check whether the boundary between the wire sheathing and the exposed core wire, which cannot be seen through the window 8, is located between the wire barrel 2 and the insulation barrel 3. It is preferable that the wire barrel 2 be provided in contact with the right edge 13 of the wire barrel 2.

In short, the present invention forms the crimp terminal main body 1 by drilling the window 12 near the boundary 12 between the wire barrel 2 and the insulation barrel 3, so that it can be branched from the main circuit to another circuit, added, and connected to the wire. In connectors that are responsible for connecting multiple wires for extension connections, circuit concentration, etc., the boundary between the exposed core wire and the sheathing portion of the wire, which cannot be seen visually through the window, can be easily seen through the window 12. This means that the crimped wire can be immediately removed with the covering part inside the wire barrel.

Therefore, its practical effects, such as being able to guarantee mechanical strength and electrical conduction in the relevant part, are enormous.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention. Fig. 1 is a perspective view of the crimp terminal main body according to the invention, Fig. 2 is a perspective view showing the above in use, and Fig. 3 is a cross section showing the above in use. It is a diagram. 1...Crimp terminal body, 2...Wire barrel, 3...Insulation barrel, 1
2...Counter.

Claims (1)

[Scope of utility model registration request] A crimp terminal for connecting multiple electric wires, characterized in that a window is bored near the border W between the wire barrel and the insulation barrel of the crimp terminal main body.