JPH06168750A - Pressure bonding terminal - Google Patents

Abstract

PURPOSE:To enable a coated caulking part to be connected to a shield wire with small number of process with ease by coating the inner surface of the coated caulking part with a flexible insulating member. CONSTITUTION:A flexible insulating member 14 is fitted within a coated caulking part 13. This member 14 has a U-shaped cross section formed of flexible insulating resin such as nylon. For connection between a pressure bonding terminal 1 and a shield wire A, an insulating coated part b at the end of the wire A is deleted together shield material c to expose a core wire a, the wire A is set so that the core wire a is positioned in a core wire caulking part 12 and the end of the part b coated with material c is positioned in the part 13. The wire (a) and the part (b) are caulked for fixing by the parts 12 and 13 respectively. Since the shield material c of the wire A is fixed to a terminal body 10 via the member 14 in this condition, the body 10 and the material c do not contact directly to each other so that electrical connection between them is not made. Thus, any special termination process is not needed on line A side for making connection with a small number of process with ease.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crimp terminal, and more particularly to a crimp terminal for a shielded electric wire in which an outer peripheral surface of an insulating covered electric wire is covered with a metal foil.

[0002]

2. Description of the Related Art Insulated coated electric wires used in electronic equipment, automobiles, etc., have an electrically conductive outer surface in order to suppress the effects of noise generated inside the equipment and noise from the outside. A shielded electric wire coated with a shielding material such as a good metal foil is used.

By the way, a crimp terminal 50 having a covered crimp portion 51 as shown in FIG.
In the case of connecting the wires, first, the insulating coating b at the end of the wire is removed to expose the core wire a, and then the shield material c is provided with a constant width from the end so that the shield material c does not contact the terminal 50. Terminal processing such as peeling off to form the coated gripping area d is required, and the number of processing steps is inevitably increased.

Further, in a crimp terminal having only a tubular core wire crimping portion which does not have a covering crimping portion and simply crimps and inserts a core wire, it is not necessary to peel off the shield material as described above. In order to prevent the shield material and the terminal from coming into contact with each other, it is necessary to provide a certain gap between them, and a certain degree of accuracy is required in the crimping process.

Therefore, an object of the present invention is to provide a crimp terminal which can be easily connected to this type of shielded electric wire in a small number of steps in order to solve the above problems.

[0006]

In order to solve the above-mentioned problems, the present invention provides a crimp terminal provided with a core caulking portion for caulking and fixing a core wire of an insulating covered electric wire and a covering caulking portion for caulking and fixing an insulating covering portion. In the above, the inner surface of the covered crimp portion is covered with a flexible insulating member.

Further, in a crimp terminal having a tubular core wire crimping portion for crimping and fixing the core wire of the insulation-coated electric wire, the crimp terminal is formed of a flexible insulating material on the core wire insertion side of the tubular core wire crimping portion. The cap having the inserted core wire insertion hole was fitted.

Further, the tubular core caulking portion may be covered with a tubular cover made of a flexible insulating material having a brim that covers the end face on the core wire insertion side.

[0009]

With the above construction, the flexible insulating member, the cap, the cover and the like prevent electrical connection between the terminal and the shield material.

[0010]

EXAMPLES Examples will be described below with reference to the drawings.

As shown in FIG. 1, the crimp terminal 1 has a cylindrical terminal connecting portion 1 formed by bending a metal plate having good conductivity.
1. A terminal body 10 having a U-shaped cross section crimped portion 12 and a U-shaped cross section crimped portion 13, and an insulating member 14 fitted inside the coated crimped portion 13. .

The insulating member 14 has a U-shaped cross section and is formed of a flexible insulating resin such as nylon. The upper end of the insulating member 14 is engaged with the upper end of the cover crimp portion 13. A stop 14a is formed.

The crimp terminal 1 and the shielded electric wire A are connected in the same process as in the case of a normal insulating covered electric wire, as shown in FIG.

That is, the insulating coating portion b at the end of the shielded electric wire A is removed together with the shield material c to expose the core wire a, and the core wire a is the caulking portion 12 of the shield wire c. The shielded electric wire A is set so that the end of the portion b is located in the covering and crimping portion 13, and the core wire a and the insulating coating portion b are crimped and fixed by the respective crimping portions 12 and 13.

In this state, since the shield material c of the shielded electric wire A is fixed to the terminal body 10 via the insulating member 14, there is no direct contact between the terminal body 10 and the shield material c. The electrical connection between the two is blocked.

Instead of the insulating member 14, an insulating resin may be applied to the inner surface of the cover crimp portion 13.

3 and 4 show another embodiment.

The crimp terminal 2 is composed of a terminal body 20 and a cap 23 made of a flexible insulating resin, but unlike the above-described embodiment, the terminal body 20 has a covering caulking portion. Not provided.

The terminal main body 20 has a plate-shaped terminal connecting portion 21 having screw fixing holes 21a and a cylindrical core wire crimping portion 22 into which a core wire is inserted and caulked and fixed. The cap 23 is fitted on the core wire insertion side of the portion 22.

The cap 23 has the core wire caulking portion 2
2 and a disc portion 23b integrally formed on the end face of the cylinder portion 23a and covering the end face of the core wire crimping portion 22 in the fitted state.
An insertion hole 23c for the core wire is formed in the.

As shown in FIG. 4, the crimp terminal 2 constructed as described above is provided with the exposed core wire a of the shielded electric wire A,
It is connected to the shielded electric wire A by being inserted into the core wire caulking portion 22 through the insertion hole 23c of the cap 23 and caulking and fixing.

In this state, the shield material c on the outer side of the insulating coating portion b does not come into contact with the disk portion 23b of the cap 23 and the shield material c does not directly contact the terminal body 20.

FIG. 5 shows still another embodiment.

This crimping terminal 3 is provided with a terminal connecting portion 31 and a core wire crimping portion 32, and is similar to the above-mentioned embodiment in the terminal body 3.
0, and a cylindrical cover 3 that covers the core wire crimping portion 32.
3 and 3.

The cover 33 is made of a flexible insulating resin and covers the end portion of the shielded electric wire A connected together with the core wire crimping portion 32. Further, on the inner peripheral surface of the cover 33, there is formed a collar portion 33a which protrudes inward and covers the end surface of the core wire crimping portion 32.

Therefore, the insulation coating portion b and the shield material c of the shielded electric wire A connected in the same manner as in the above-described embodiment abut on the collar portion 33a, and the shield material c directly contacts the terminal body 30.
Never come into contact with.

[0027]

As described above, the crimp terminal of the present invention is
Since a flexible insulating member, a cap, a cover, etc. are attached to electrically shield the terminal itself from the shield material of the shielded wire, no special terminal treatment is required on the shielded wire side. As with ordinary insulation-coated wires, they can be easily connected to shielded wires with a small number of steps.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment according to the present invention.

FIG. 2 is a partially cutaway sectional view showing the same connection state as above.

FIG. 3 is an exploded perspective view showing another embodiment.

FIG. 4 is a partially cutaway sectional view showing the same connection state as above.

FIG. 5 is a partially cutaway cross-sectional view showing another embodiment.

FIG. 6 is a partially cutaway sectional view showing a conventional example.

[Explanation of symbols]

 1,2,3 Crimp terminal 10,20,30 Terminal main body 11,21,31 Terminal connection part 12,22,32 Core wire crimping part 13 Cover crimping part 14 Insulating member 14a Locking part 23 Cap 23a Cylindrical part 23b Disc Part 23c Insertion hole 33 Cover 33a Collar part A Shielded wire a Core wire b Insulation coating part c Shield material

Claims (3)

[Claims] 1. A crimp terminal having a core crimping portion for crimping and fixing a core wire of an insulation-coated electric wire and a coating crimping portion for crimping and fixing an insulating coating portion, wherein an inner surface of the coating crimping portion has a flexible insulating property. A crimp terminal which is covered with a member. 2. A crimp terminal having a tubular core wire crimping portion for crimping and fixing a core wire of an insulating covered electric wire, wherein the tubular core wire crimping portion is formed of a flexible insulating material on a core wire insertion side. A crimp terminal, wherein a cap having a core wire insertion hole is fitted. 3. A crimp terminal having a tubular core wire crimping portion for crimping and fixing a core wire of an insulation-coated electric wire, wherein the tubular core wire crimping portion has a collar that covers an end face of the core wire insertion side. A crimp terminal characterized by covering a tubular cover formed of a certain insulating material.