JP3225339U - Crimp terminal - Google Patents

Abstract

An object of the present invention is to provide a crimp terminal that imparts water resistance to an electric wire connection portion of a crimp terminal to which an electric wire is connected and can simplify a water stop operation at a wire laying work site. An end face of a cylindrical or substantially cylindrical electric wire connecting portion and a portion extending from the electric wire connecting portion are associated with each other and substantially contacted with each other, and a gap is watertightly closed to form an opening of the electric wire connecting portion. Provides waterproofness. [Selection diagram] Fig. 1

Description

The present invention relates to a structure of a crimp terminal for connecting an electric wire to an electric device.

A crimp terminal is a metal part that electrically connects an electric wire conductor, and has a cylindrical portion (hereinafter, referred to as an electric wire connection portion) for connecting the electric wire conductor and a portion (hereinafter, referred to as an electric device). , A device connection part). After inserting the electric wire conductor into this electric wire connection portion, it is connected to the electric wire by caulking (crimping) with a tool.

The following two structures are known for crimp terminals.
1) A part of a metal plate is bent in a substantially cylindrical shape, and a portion that remains as the wire connection portion is a device connection portion.
2) A metal pipe itself is used as an electric wire connection part, and a part of the pipe is formed into a substantially planar shape to be used as an equipment connection part.
In any structure, a hole for screwing is generally formed in the device connecting portion.

Published Patent Publication JP-A-7-226283 JP Patent Publication JP-2003-92025A

Although the crimp terminals shown in FIGS. 5 to 7 of Patent Document 1 are widely used, there are two places where the wire conductor is exposed because the wire connection portion is open at both ends. One is between the wire connection and the wire insulation. The other is a wire conductor tip.

In an electric wire laid outdoors, water may penetrate into the insulating coating of the electric wire from a portion where the electric wire conductor is exposed, and the electric wire conductor may be corroded to cause disconnection. For this reason, water infiltration is prevented by tightly winding a tape having excellent adhesion between the wire connection portion and the insulating coating of the wire. However, it is difficult to wind the tape in a watertight manner due to the complicated shape and unevenness of the wire conductor tip, so liquid-proof, semi-solid synthetic resin, synthetic rubber, etc. are mainly applied and filled to improve the water stopping performance. It is a general method to obtain. However, with this method, the operator must wait at the work site until the synthetic resin, synthetic rubber, and the like are hardened, which is a burden.

On the other hand, crimp terminals using a metal tube shown in FIG. In this crimp terminal, a part of the tube is substantially flat, the opening of the wire connection portion is only on the insulating coating side of the wire, and the other is substantially closed. Therefore, if the general blockage portion is sealed from the inside of the pipe in advance by an appropriate method such as the above-mentioned synthetic resin, synthetic rubber, or brazing, it is possible to prevent water from entering from the end portion of the electric wire conductor. In addition, the work of applying a synthetic resin, a synthetic rubber, or the like at a work site can be omitted.

However, in the case of a crimp terminal using a metal tube, a metal tube having an appropriate diameter must be used according to the cross-sectional area of the wire conductor to be connected. Since it is uniquely determined based on the diameter of the pipe, a large tool connection cannot be obtained, and the diameter of the screw hole cannot be increased to a certain degree or more.

The present invention has been made to solve the above problems, and an object of the present invention is to reduce the work of stopping water at a work site.

The present invention provides a crimp terminal having a tubular or substantially tubular wire connection portion and a tool connection portion, wherein a portion extending from an end of the wire connection portion and relaying the wire connection portion and the tool connection portion is an end face of the wire connection portion. The joints are bent so as to make approximate contact with each other, and the gap at the meeting and approximate contact points is closed in a watertight manner. Since the shape and dimensions of this equipment connection can be determined independently of the dimensions of the electric wire connection, there is a high degree of freedom in the design of the connection with the electric equipment, and there are more choices for connection modes, improving the convenience of connection work. Help.

According to the present invention, complicated work such as application and filling of the above-mentioned synthetic resin and synthetic rubber at the electric wire laying work site becomes unnecessary, and the burden on the operator can be reduced.

Side view and front view of Embodiment 1 of the present invention Side view and front view of Embodiment 2 of the present invention

FIG. 1 is a first embodiment of the present invention. After a predetermined shape is obtained by punching a metal plate with a mold or the like, a portion is bent and raised into a substantially cylindrical shape to form an electric wire connection portion 1.
It has a structure in which the relay part 4 from the end face 2 of the electric wire connection part and a part of the electric wire connection part 1 extends to reach the equipment connection part 3 is bent so as to meet and substantially abut.

The crimp terminal of the present invention can be obtained by closing the gap between the end face 2 of the wire connection portion and the transition portion 4 and the gap at the approximate contact portion 5 in a watertight manner by welding or brazing. In addition, it is the same as the well-known conventional crimp terminal that the close contact portion 6 of the wire connection portion bent and raised in a substantially cylindrical shape is similarly closed by welding, brazing, or the like.

FIG. 2 shows a second embodiment. This is a device in which the device connecting portion of the first embodiment is bent to change the direction in which the electric wire is drawn.

Since the crimp terminal according to the present invention can be manufactured by the existing metal plate processing technology, it has high industrial applicability. Since it is possible to simplify the operation of stopping the water at the wire connection site at the wire laying work site, providing this to the market can contribute to reducing the burden on the workers and suppressing the consumption of resources and energy, and also contributes to environmental conservation.

DESCRIPTION OF SYMBOLS 1 Electric wire connection part 2 Electric wire connection end face 3 Equipment connection part 4 Relay part 5 Meeting, approximate contact point 6 Closed part

Claims (1)

In a crimp terminal having a cylindrical or substantially cylindrical electric wire connection portion and a connection portion with an electric device, a relay portion extending from an end of the electric wire connection portion and connected to the connection portion with the electric device is a portion of the electric wire connection portion. A crimp terminal characterized in that the crimp terminal is bent so as to meet and substantially abut with an end face, and a gap at the meeting and roughly abutting portion is watertightly closed.

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