JPH0134285Y2 - - Google Patents

Description

[Detailed description of the invention] Purpose of the invention [Industrial field of application] The present invention relates to a connection structure with a crimp terminal at the end of a high-voltage resistance wire that is connected to an automobile spark plug, for example, and This is intended to improve the degree of contact.

[Conventional technology and problems]

As shown in Figures 6 to 8, Japanese Utility Model Application No. 52-12879 discloses a crimp terminal used for terminal connection of high-voltage resistance wires, as shown in Figures 6 to 8. A cut-out piece (stopper) 3 from the substrate 7 is provided at the intermediate part between the fitting part 2 to be attached, and the insulating coating 6 of the wire end is peeled off from the cut-out piece 3 to expose it. A device is disclosed in which the electric wire 4 and the holding portion 1 are crimped and fixed while the folded bent portion 5a of the core wire 5 is pressed.

Since the crimp terminal with the above structure has the cut-and-raised piece 3 formed in the middle part, there is a hole in the center part of the board, which reduces the strength and may deform the terminal. Since the size of the core wire 5 is limited, a problem arises in that the core wire 5 to be pressure-welded protrudes from the cut-and-raised piece 3, causing poor continuity or burnout.

An object of the present invention is to solve the above-mentioned problems and provide a terminal structure for a high-voltage resistance wire in which stable electrical contact can be obtained without the risk of reducing the strength of the terminal.

Structure of the invention [Means for solving the problems] In order to achieve the above object, the terminal structure of the high voltage resistance wire of the invention is as shown in Figs. A pressure connection is made from the rear end of the fitting part 2 between the holding part 1 which crimps and fixes the end part of the high voltage resistance wire 4 and the fitting part 2 which engages the conductive part of the electrical component. A folded bent portion of the core wire 5 is formed by bending the piece 8 so as to be positioned substantially at right angles to the axial direction of the terminal, and exposing the insulation coating 6 at the terminal portion of the high voltage resistance wire 4 with respect to the pressure welding piece 8. The present invention is characterized in that the high voltage resistance wire 4 and the crimp terminal T are fixed in the holding portion 1 while the high voltage resistance wire 4 and the crimp terminal T are in pressure contact with each other.

As shown in the developed view of FIG. 1, the pressure contact piece 8 is connected to the rear side edge of the holding piece 1a via a connecting piece 8a, and the size of the pressure contact piece 8 is equal to that of the pair of holding pieces 1a,
It is preferable to take a size that can substantially close the inner cavity of the holding part 1 formed by the folding of the holding part 1.

Note that the board 7 has a locking protrusion 9 for the pressure contact piece 8.
The folded bent portion 5a of the core wire 5 is formed by cutting and raising the core wire 5.
It is preferable to prevent the pressure contact piece 8 from bending or changing during pressure contact. Moreover, instead of providing this locking protrusion 9 on the board 7, as shown in FIG. 5, a claw 10 is provided protrudingly on the rear edge of the holding piece 1a.
It may be bent inward during molding of the holding part 10.

[Effect]

The connection between the crimp terminal T and the high voltage resistance wire 4 is as follows:
As shown in FIG. 4, the folded part 5 of the core wire 5
a strongly against the pressure welding piece 8, and fold back the core wire 5b.
so that it faces the substrate 7 which is the bottom wall of the holding part 1,
This is achieved by crimping and fixing the insulating coating part with the holding part 1. That is, since the core wire 5 is in close contact with the pressure contact piece 8 and the inner surface of the holding portion 1, a good electrical contact state can be obtained.

Since the pressure contact piece 8 is formed using the holding portion 1 separately from the substrate 7, there is no risk of reducing the strength of the crimp terminal.

Effects of the Invention As explained above, according to the terminal structure of the high voltage resistance wire of the present invention, there is no decrease in the strength of the intermediate part of the crimp terminal, and the crimp piece that comes into pressure contact with the folded and bent part of the core wire is also machined by the crimp terminal. It can be molded without being affected by physical strength, improving the reliability of electrical connections.

[Brief explanation of the drawing]

Figure 1 is a developed view of the crimp terminal according to the present invention, Figure 2 is a developed view of the crimp terminal according to the present invention;
The figure is a perspective view of the crimp terminal according to the present invention, FIG. 3 is a side view of the crimp terminal of FIG. 2, and FIG. 4 is a sectional view showing an embodiment of the terminal structure of the high voltage resistance wire of the present invention. Figure 5 is a developed view of another crimp terminal according to the present invention, Figure 6 is a developed view of a conventional crimp terminal, Figure 7 is a perspective view of a conventional crimp terminal, and Figure 8 is the crimp terminal of Figure 7. FIG. 2 is a cross-sectional view showing the terminal structure of a high voltage resistance wire using the above. T... Crimp terminal, 1... Holding part, 2... Fitting part, 4... High voltage resistance wire, 5... Core wire, 5a
...Folded bending portion, 8...Press-welding piece.

Claims (1)

[Scope of utility model registration request] A pressure welding piece is provided between the holding part for crimping and fixing the end of the high voltage resistance wire of the crimp terminal and the fitting part for engaging the conductive part of the electrical component, which is continuous from the rear end of the fitting part. is bent to be positioned almost perpendicular to the axial direction of the terminal, and the folded bent part of the core wire exposed by peeling off the insulation coating at the end of the high voltage resistance wire is pressed against the pressure contact piece. A terminal structure for a high-voltage resistance wire, characterized in that the high-voltage resistance wire and a crimp terminal are firmly fixed in the holding portion.