JPS5934050Y2 - Wide rib crimp terminal - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a crimp terminal with wide ribs.

As shown in FIG. 1, a conventional crimp terminal of this type has a contact portion 1 on one side that fits into a mating crimp terminal, and the connecting portion 1
a core wire crimping part 2 that connects to the core wire of the connecting electric wire continuously;
A crimp terminal A is formed in which the covering gripping portions 3 that clamp the wire covering are each formed into a U-shaped end face by mutually opposing upstanding pieces.
to steal.

As shown in FIG. 2, the crimp terminal A is located at a position where an anvil 4, which is a cradle for the crimp terminal, is provided below, and a crimper 5, which is an upper die for forming and crimping, is arranged above. Shift the crimp terminal A from the F1 direction as viewed from the arrow F2 direction in such a manner that the core wire 6 of the connecting wire fits into the core wire crimping part 2 of the crimp terminal, and the sheathing 7 fits into the covering gripping part 3. Insert the connecting wire.

Thereafter, the talinper 5 is lowered from the direction F3, and the talinper 5 and anvil 4 are used to pressurize the core wire crimping part 2 in a manner that winds up the core wire 6 and connects it, and in the same way, the sheathing 7 is also connected to the sheath gripping part 3. It is crimped and clamped.

In the above crimping process, especially the core wire of the connecting wire or the thin wire (
For example, in the case of AWG #26 to #30), there is a risk that the core wire 6 of the connecting wire that comes into contact with both ends 2a and 2b of the core wire crimping portion 2 may curve inward and break due to the pressure applied during crimping. be.

To prevent this, the length L in the axial direction of the core wire crimping part 2 is
Anvil 4, which is a crimping jig, and crimper
5 (7) The width L2 is shortened by 0.3 mm to 0.4 mm, and both ends are provided with a margin of 0.15 mm to 0.2 mm, so that both ends 2a and 2b become bell-mouthed when pressurized. I was trying to make it curve back.

However, it is difficult to seat the crimp terminal A accurately in the crimp jig 4 and 5 positions. For example, if the crimp terminal A is positioned in front of the crimp jig, as shown in FIG. However, in order to prevent this, the length Ll in the axial direction of the core wire crimping part 2 is If the width L2 of the crimping jigs 4 and 5 is made too small, sufficient crimping force cannot be obtained, so there remains room for improvement.

Therefore, the present invention improves the above-mentioned drawbacks, and even if the crimp terminal moves slightly back and forth with respect to the installation position of the crimping jig, the core wire will not be cut at both ends of the core wire crimping part, and reliable crimping can be achieved. The purpose of this invention is to provide a crimp terminal that can be used.

Embodiments of the present invention will be described in detail below with reference to the drawings.

First, as shown in FIG. 4, one side is provided with a contact part 11 into which a mating crimp terminal (not shown) can be fitted, as in the conventional case, and the core wire crimping is used to continuously connect the core wire of the connecting wire to the contact part 11. The part 12 and the covering gripping part 13 which hold the covering of the electric wire are each formed with a U-shaped cross section with upstanding plates facing each other.

The core wire crimping portion 12 has its wall surface projected inward to form wide ribs 12c as shown in FIG. 4, thereby forming an integral crimp terminal B.

As shown in FIGS. 6 and 7, the crimp terminal B of the present application having the above structure has a crimper 15 disposed above an anvil 14 below.
The core wire crimping part 12 is placed on the anvil in which the crimping jigs are arranged vertically and oppositely from each other in the direction of arrow F4.

On the other hand, the connecting wire is inserted from the direction of arrow F5 on the opposite side, and the core wire 16 is fitted onto the core wire crimping portion 12, and the wire sheathing 17 is fitted onto the covering gripping portion 13, respectively.

Then, the talinper 15 is lowered from above in the direction of arrow F6, and while sliding the outer circumference of the core wire crimping part 12 along the inner wall of the talinper 15 formed in the shape of Mt. Fuji, the upright pieces of the core wire crimping part are moved inward. Curve it.

In this case, since the core wire crimping part 12 is formed with a wide rib 12c whose wall surface protrudes inward, the lowered talinper 15 is moved to both ends 12 in the axial direction as shown in FIG.
After contacting a and 12b, pressurize the outer peripheral surface of the wide rib 12c while forming both ends into a bell mouth (trumpet mouth) shape that opens outward, and the crimping is completed in the state shown in Fig. 9. .

Even when the core wire 16 is crimped with the wide rib 12c to form the final predetermined size, the wide rib 12c
There is still a gap or a step between the core wire 12a and the end portions 12a and 12b, and since the wire is opened in a bell mouth shape, a gap is created between the core wire 16 and the wire breakage can be prevented.

Therefore, the crimp terminal B is connected to the anvil 14 and the crimper 15.
It has been confirmed through experiments that this condition does not change even if the line is moved slightly before or after the correct position, and that it is extremely effective against line breakage.

As mentioned above, in the crimp terminal of the present invention, the wall surface of the core wire crimping part is made to protrude inward and is provided with wide ribs, which allows both ends of the core wire crimping part to form a bell mouth shape in a natural state during the crimping process. Since the core wire can be formed, the small gap created between the core wire and the core wire can prevent the core wire from being cut during crimping.

[Brief explanation of drawings]

Figure 1 is an overall perspective view of a conventional crimp terminal, Figures 2 and 3 are explanatory diagrams showing the crimp state, Figure 4 is an overall perspective view of the crimp terminal of the present invention, and Figure 5 is Figure 4V. The sectional views taken along the -V line and FIGS. 6 to 9 are explanatory diagrams showing the crimp state of the crimp terminal of the present invention. [Explanation of symbols], 1, 11...Contact part, 2, 1
2... Core wire crimping part, 2 a, 2 b, 1
2a, 12b"...end, 3.13...coated gripping part, 4, 14...anvil, 5°15...
... Crimper-16, 16 ... Core wire, 7,
17... Cover, 12c... Wide rib, A, B... Crimp terminal, Fl, F4...
・Transfer direction of crimp terminal, F2. F5...Electric wire insertion direction, F3. F6... Crimper descending direction.

Claims (1)

[Claims for Utility Model Registration] One side has a contact part that fits with a mating crimp terminal, and the other side has a core wire crimp part that connects the core wire of the connecting wire continuously with the contact part, and the sheath of the connecting wire is sandwiched. In a crimp terminal in which the covering gripping portions are each formed into a U-shaped end face with upstanding pieces facing each other, the core wire crimping portion is provided with a wide rib whose wall surface protrudes inward, and the core wire crimping portion is provided with a wide rib that protrudes inwardly so that the core wire crimping after crimping is performed. A crimp terminal with wide ribs characterized by a bell-mouth shape with openings at both ends.