JP2005149781A - Crimp terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a crimp terminal firmly crimping wires even if thicknesses of the wires are different, and without removing a coating of a non-halogen wire, which is surely connected to a mate side terminal. <P>SOLUTION: The crimp terminal is structured of a wire pinching part 4 equipped with a plurality of barrels 1 to 3 corresponding to at least two kinds of wire diameters, a connecting part 5 with a mate side terminal 9 coupled to the wire pinching part 4, and convex parts 6, 7 for insertion inserted into a wire 8 formed at bottom face 4A of the wire pinching part 4 having a nearly U-shaped cross section. The wire 8 as it is coated is inserted into the convex parts 6, 7 for insertion, parts of the convex parts 6, 7 projecting from the wire 8 are bent and folded, and at the same time, the barrels 1 to 3 matching the diameter of the wire 8 is bent and folded to crimp the wire 8. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a crimp terminal capable of attaching an electric wire and a mating terminal to connect the electric wire to the mating terminal.

  For example, electrical connectors are generally used as means for connecting wire harnesses arranged in the body of an automobile to the wire harnesses or to in-vehicle devices. These electrical connectors are a pair of male and female connectors. The housing includes a plurality of crimp terminals that are inserted into the pair of connector housings and crimp-connect the wire harness. And the structure of the said crimp terminal consists of the terminal connection part with an other party terminal, and an electric wire (wire harness) clamping part, The electric wire clamping part is an electric wire clamping piece which clamps an electric wire from on a coating | cover, and an electric wire. And a wire barrel that is crimped to the core wire.

However, in the crimp terminal having such a structure, the shape of the wire barrel is constant in proportion to the size of the various crimp terminals. It was difficult to connect the wires. Therefore, the structure of the wire barrel in the crimp terminal is improved so that multiple types of electric wires with different core wire end areas can be reliably connected and used in the single shape wire barrel. Crimp terminals with excellent economic efficiency and connection reliability have been developed so that wires of different lengths can be reliably connected. This is a crimp terminal formed in the order of the connection portion with the mating terminal, the wire barrel, and the wire clamping portion, and the wire barrel is connected to the first crimp portion and the first crimp portion on the connection portion side and the wire clamping portion side. The slit which divides | segments into 2 crimping | compression-bonding parts was provided, and also the tip height position of the 1st crimping | compression-bonding part and the 2nd crimping | compression-bonding part was changed (refer patent document 1).
Japanese Utility Model Publication No. 6-36215 (2nd page, FIG. 3)

  In the conventional example, the sheath of the electric wire is peeled off to expose the core wire, and the core wire and the covered electric wire (of course the diameters are different) are crimped. Even if the core wires have different diameters, the crimping is performed. In this way, it can be securely connected to the mating terminal. However, in the case of an electric wire using soft vinyl chloride as a covering material, it is easy to peel off the vinyl chloride coating, but the non-halogen electric wire (electric wire whose core wire is covered with a non-halogen material) in consideration of environmental problems. In this case, since the coating was not soft and hard like vinyl chloride, it was difficult to make a mouth, particularly an intermediate mouth. Such a non-halogen electric wire is difficult to use with a conventional crimp terminal, and there is a possibility that a reliable connection is difficult.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a crimp terminal that can be securely crimped even when the thickness of the wire is different without peeling off the coating of the non-halogen wire and can be reliably connected to the mating terminal.

  In order to achieve the above-described object, the present invention provides an electric wire holding portion provided with a plurality of barrels corresponding to at least two types of electric wire diameters, a connection portion with a mating terminal coupled to the electric wire holding portion, and an electric wire holding portion. The convex portion for insertion to be inserted into the electric wire formed on the bottom surface having a substantially U-shaped cross section, and the covered electric wire is inserted into the convex portion for insertion to remove the electric wire from the convex portion. The protruding part was bent, and the barrel matched to the diameter of the electric wire was bent to crimp the electric wire.

  According to the present invention, an electric wire holding portion provided with a plurality of barrels corresponding to at least two types of electric wire diameters, a connection portion of a mating terminal coupled to the electric wire holding portion, and a cross-section of the electric wire holding portion are substantially U-shaped. A convex portion for insertion to be inserted into the electric wire formed on the bottom surface of the shape, and insert the covered electric wire into the convex portion for insertion and bend the portion protruding from the electric wire of this convex portion Because the wire is crimped by bending the barrel that matches the diameter of the wire, the coating of the wire is peeled off, that is, the lead-out operation is not required, and the wire can be firmly crimped with the projecting convex portion and the barrel. The connection with the mating terminal is also reliable.

  Preferred embodiments of the present invention will be described with reference to the drawings.

  The embodiment shown in FIG. 1 is composed of an electric wire holding part 4 provided with barrels 2 and 3 corresponding to at least two kinds of electric wire diameters, and a terminal connection part 5 with a mating terminal. The electric wire clamping portion 4 has a U-shaped cross section, and two piercing convex portions 6 and 7 are formed on the bottom surface 4A thereof. The electric wire 8 is inserted into the protruding protrusions 6 and 7. This inserted electric wire 8 is still covered. In addition, it is preferable to use a non-halogen resin for covering the wire 8 in consideration of environmental problems. The barrels 2 and 3 are formed on the side walls formed on both sides of the bottom surface 4 </ b> A of the wire holding portion 4 having a U-shaped cross section. An electric wire holding piece 10 is formed on one end of the side wall.

  FIG. 2 is a plan view showing a state in which the mating terminal 9 and the core wire 8A of the electric wire 8 are connected. In FIG. 2, the connecting portion of the terminal 9 and the barrel are omitted. This terminal 9 is inserted into the connecting portion 5 in FIG. The electric wire 8 into which the embedment convex portions 6 and 7 are inserted is bent at a portion protruding from the electric wire 8 of the embedment convex portions 6 and 7. From the state shown in FIG. 2, a barrel that matches the diameter of the electric wire 8, for example, the barrel 2, is crimped inward as shown in FIG. 1 to crimp the electric wire 8 to the electric wire holding portion 4. The remaining barrel 3 and the wire clamping piece 10 are also bent inward, but they do not crimp the wire 8.

  FIG. 3 is an enlarged cross-sectional view showing a state in which the tip side is bent after the piercing convex portions 6 and 7 in FIG. 2 are pierced into the electric wire 8, and the piercing convex portion 6 or 7 is the electric wire. 8 is pierced through the coating 8B and the core wire 8A, the tip side protrudes from the electric wire 8, and the protruding portion is bent. The convex portions 6 and 7 are substantially triangular, and are provided so that the base of the triangle is along the axial direction of the electric wire 8. If the bases of the triangles of the convex portions 6 and 7 are provided so as to be orthogonal to the axial direction of the electric wire 8, the core wire 8A may be broken. In this embodiment, two convex portions 6 and 7 are provided, but one or three or more may be used. As the barrels 2 and 3, the size of the barrel 2 is small and the size of the barrel 3 is medium. In addition, the electric wire clamping piece 10 can also be considered as a barrel of the maximum size.

  FIG. 4 shows an embodiment in which a larger barrel 1 is formed in addition to the barrels 2 and 3 shown in FIG. Further, the embodiment shown in FIG. 5 shows an example in which a small barrel 2 and a large barrel 1 are formed. Furthermore, in FIG. 6, it is embodiment which shows the combination of the inside barrel 3 and the large barrel 1. The size of the electric wire 8 to which the barrel 2 is crimped is 0.3 sq to 0.5 sq, the barrel 3 is 0.85 sq to 1.25 sq, and the barrel 1 is 2 sq or more.

  In the embodiment described above, the number of barrels is two or three, but an embodiment in which four or more barrels are formed is also possible. Moreover, although the barrel tip bent after being inserted is bent in the same direction in FIG. 2, it may be bent in the opposite direction. Furthermore, it is necessary that the convex portion has a sharp tip and a thickness and size that can be easily inserted into the electric wire.

The perspective view which shows the suitable Example of this invention. The top view of the state which embeded the electric wire. The expanded sectional view of an electric wire penetration state. The side view which shows other embodiment. The side view which shows other embodiment. The side view which shows another embodiment.

Explanation of symbols

1, 2, 3 Barrel 4 Electric wire clamping part 5 Connection part 6, 7 Convex convex part 8 Electric wire 9 Terminal

Claims (4)

An electric wire holding part provided with a plurality of barrels corresponding to at least two types of electric wire diameters;
A connection portion with a mating terminal coupled to the wire clamping portion;
It is composed of a convex portion for insertion to be inserted into an electric wire formed on the bottom surface having a substantially U-shaped cross section of the electric wire holding portion,
A crimping terminal characterized in that the coated electric wire is inserted into the protruding convex portion, the portion protruding from the electric wire of the convex portion is bent, and the electric wire is crimped by bending the barrel corresponding to the diameter of the electric wire. .   The crimp terminal according to claim 1, wherein a non-halogen resin is used for covering the electric wire and the coating is used without peeling off the coating.   The crimp terminal according to claim 1, wherein the convex portion has a substantially triangular shape, and is provided so that a base of the triangle is along an axial direction of the electric wire. The crimp terminal according to any one of claims 1 to 3, wherein two or more of the convex portions are provided.