JP2007287447A - Cable-dedicated crimping terminal and crimping connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cable-dedicated crimping terminal which can be pressed without a special tool. <P>SOLUTION: This cable-dedicated crimping terminal is provided with a crimp 3 for cable 9 connection by pressure bonding, and is composed of a terminal substrate 2 and the crimp 3. The crimp 3 is formed as a round cylinder or a polygonal cylinder, a gap 4 is formed in a joint of the cylinder in the same direction as for cable insertion, and a coil spring 5 is provided covering the cylinder so that the cable 9 and a crimping terminal 1 can be pressed and latched by the cylindrical crimp 3 crushed flatly by means of a contraction force of the coil spring 5. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a structure of a crimp terminal for a cable and a crimp connector that are electrically connected by crimping a front end portion of the cable, and in particular, a crimp terminal for a cable and a crimp for a cable that can be crimped without using a special crimp tool. It relates to connectors.

Conventionally, as a crimping terminal, in a crimping terminal provided with a barrel part that crimps and connects an electric wire through which a low current flows, a serration having both the length direction of the electric wire and a direction perpendicular thereto is formed in the barrel part. There are crimp terminals (see, for example, Patent Document 1).
JP-A-11-3733 (see paragraphs {0012} to {0016} and {FIGS. 1 to 6) in {Aspect of the Invention} in the claims section and the detailed description of the invention)

However, the prior art has a problem that the work cannot be performed without a special crimping tool.
In view of this situation, the present invention eliminates the need for a special crimping tool with a crimping terminal and a crimping connector having a crimping portion that is surely crimped by an elastic member having a contraction force that maintains a crimped state with a simple configuration. It is an object of the present invention to provide a crimp terminal for a cable and a crimp connector for a cable.

A first invention of the present invention for solving the above-described problems is a crimp terminal for a cable as described in claim 1, and is as follows.
A crimping terminal having a crimping part for crimping and connecting a cable, comprising a terminal board part and a crimping part, the crimping part being formed in a round cylindrical shape or a polygonal cylindrical shape, in the same direction as the cable insertion direction A cable and a crimp terminal are provided by providing a spiral spring so as to cover the cylindrical crimping part and providing a gap in the cylindrical seam, and crushing the cylindrical part of the crimping part by the contraction force of the helical spring It is the structure which press-fits.

A second invention of the present invention for solving the above-mentioned problems is a crimp terminal for a cable as described in claim 2, and is as follows.
In addition to the invention described in claim 1, a crimp terminal having a crimp part for crimping and connecting a cable, comprising a terminal substrate part and a crimp part, the shape of the crimp part being round cylindrical or polygonal A cable and a crimp terminal are crimped by winding a cylindrical spring by rolling a leaf spring in place of a helical spring provided to cover the cylindrical shape of the crimp part. It is the structure which can be locked.

A third invention of the present invention for solving the above-mentioned problems is a crimp terminal for a cable as described in claim 3, and is as follows.
In addition to the invention described in claim 1, a crimp terminal having a crimp part for crimping and connecting a cable includes a terminal substrate part and a crimp part. The cable and crimping terminal are crimped by providing an O-ring to wind the cylindrical crimping part instead of the helical spring provided to cover the cylindrical part of the crimping part. It is the structure which can be locked.

A fourth invention of the present invention for solving the above-mentioned problems is a crimp terminal for a cable as described in claim 4, and is as follows.
In addition to the invention according to any one of claims 1 to 3, in the crimp terminal having a crimp part for crimping and connecting the cable, a cut that can lift the end of the cable to the terminal board part. It is the structure which forms a raising piece or a projection part.

A fifth invention of the present invention for solving the above-mentioned problems is a crimping connector for a cable as described in claim 5, and is as follows.
In a crimping connector for connecting cables by connecting, a crimping part with a gap at the joint is formed at both ends, and the crimping part is formed in a round cylindrical shape or a polygonal cylindrical shape. A gap is formed in the cylindrical joint in the same direction as the direction, a helical spring is provided so as to cover the cylindrical crimping portion, and the cylindrical shape of the crimping portion is crushed by the contraction force of the helical spring. In this configuration, the cable and the crimp connector are crimped and locked.

A sixth invention of the present invention for solving the above-described problems is a crimp connector for a cable as described in claim 6, and is as follows.
In addition to the invention according to claim 5, instead of the helical spring provided so as to cover the crimping portion, the plate spring is rolled into a cylindrical shape and wound around the crimping portion, thereby crimping the cable. It is the structure which enables the child to be crimped and locked.

A seventh invention of the present invention for solving the above problems is a crimp connector for a cable as described in claim 7, and is as follows.
In addition to the invention according to claim 5, in place of the helical spring provided so as to cover the crimping part, the cable and the crimping connector can be crimped and locked by winding an O-ring around the crimping part. It is the structure to do.

Since the crimp terminal for a cable according to the present invention is configured as described above, the following effects are achieved.
(1) In the inventions according to claims 1 to 4, the crimping can be easily performed without requiring a special crimping tool.
(2) Since the elastic member having a contracting force is configured to cover the crimping portion, the state after the crimping can be stably maintained.
(3) In the invention according to claim 4, the cable end is pushed up by the cut and raised piece or the protruding portion, or is distributed to the left and right, so that it is difficult to come out and stable crimping is possible.

  A crimping terminal having a crimping part for crimping and connecting a cable, comprising a terminal board part and a crimping part, the crimping part being formed in a round cylindrical shape or a polygonal cylindrical shape, in the same direction as the cable insertion direction A cable and a crimping terminal are provided by providing a gap in the cylindrical joint, providing a helical spring so as to cover the cylindrical crimping part, and crushing the cylindrical part of the crimping part by the contraction force of the helical spring Is a crimp terminal for a cable which is adapted to be crimped and locked.

FIG. 1 shows a first embodiment of the present invention, where (A) is a perspective view showing a state before the cable end is inserted into the cable crimping terminal 1, and (B) is a cable crimping of the cable end. It is a perspective view which shows the state after inserting in the terminal 1 and crimping | bonding.
In the crimp terminal provided with the crimp part 3 for crimping and connecting the end part of the cable 9, the terminal board part 2 and the crimp part 3 are formed. The shape of the crimp part 3 is obtained by bending a plate material so that the gap 4 is formed. While forming, a round cylindrical shape or a polygonal cylindrical shape (the illustrated one is a round cylindrical shape) is formed. The gap 4 may be spiral, curved (shown) or linear. A compression spring 5 is provided so as to cover the tubular crimping part 3, the end of the cable 9 is inserted into the tubular crimping part 3 and crimped with pliers or the like, and the crimping part 3 of the crimping terminal is connected to the gap 4. Squeeze so that it disappears and press-fit.

First, the crimping terminal will be described with reference to FIGS. 1 and 2. When the crimping part 3 is rolled into a cylindrical shape, the crimping terminal 3 is processed so that a gap 4 is formed, and a wound spring 5 is wound around the crimping part 3 ( FIG. 1) A first embodiment and a second embodiment in which both end portions of the contracting helical spring 5 are engaged and locked (see FIG. 2) with a locking projection 7 formed on the crimping portion 3.
A piece 6 is formed by cutting and raising at a portion near the crimping portion 3 of the terminal board portion 2 so that the end portion of the cable 9 is engaged.
As can be understood from FIG. 1B, the cut and raised piece 6 is inserted into the crimping portion 3 and further pushed into the end portion of the cable 9 so that the end of the cable 9 gets over the cut and raised piece 6. The end of the cable 9 that is bent at the portion of the piece 6 that is bent and raised at the same time as the crimping portion 3 is crushed and is shrunk until the gap 4 disappears by crushing, and further crushing and the end of the cable 9 is firmly crimped and fixed. This prevents the terminal from coming off from the crimp terminal.

FIG. 2 shows a crimp terminal for a cable as a second embodiment of the present invention.
This second embodiment differs from the first embodiment in that a locking projection 7 for locking the contracting helical spring 5 that covers the crimping portion 3 is sandwiched between the gaps 4 of the crimping portion 3. The bent spring 8 is bent at both ends to form a bent portion 8, and the bent portion 8 is engaged and locked to the locking projection 7.
Further, instead of the cut-and-raised piece 6, a design change in which the protrusions 8 are formed on the front surface side by pressing from the back surface of the terminal board portion 2 can be considered.
Since other configurations are the same as those of the first embodiment, detailed description thereof is omitted.

What is shown in FIG. 3 is a crimp terminal for a cable as a third embodiment of the present invention.
In this third embodiment, as a difference from the first embodiment, instead of the helical spring 5 that covers the crimping portion 3, for example, a leaf spring having a contraction property having a gap 10 in the longitudinal direction is used. Since the crimping sleeve 11 is rounded and covered with a cylinder, and other configurations and operations are the same as those of the first embodiment, detailed description thereof is omitted.
Further, instead of the pressure-bonding sleeve 11, a pressure-bonding portion may be covered by using a ring-shaped rubber material having a strong shrinkage force such as an O-ring.
Further, in place of the cut-and-raised piece 6 and the protruding portion 8, various shapes such as a protrusion having a triangular mountain shape having an appropriate length can be considered.

  As described above, the action of tightening the crimping portion 3 by the elastic member having a contracting force such as the helical spring 5 and the crimping sleeve 11 is generated, and the cable end can be securely held by crimping.

Although not shown in the figure, as applied to a crimping connector using the technique of the crimping terminal, a crimping part is formed at both ends, and a gap is provided at the joint in the crimping connector that connects the cables by butting them. The crimping part is formed at both ends, the crimping part is formed in a round cylindrical shape or a polygonal cylindrical shape, and a gap is provided in the cylindrical joint in the same direction as the insertion direction of the cable inserted from both ends, A helical spring is provided so as to cover the pressure-bonded portion, and the tubular shape of the pressure-bonded portion is crushed by the contraction force of the helical spring so that the cable and the crimping connector are crimped and locked. A crimp connector for cables is conceivable.
In addition, in the above-described crimping connector, instead of the helical spring, a crimping connector in which a crimping sleeve obtained by rolling a leaf spring into a cylindrical shape is wound around the crimping part is also conceivable.
Further, similarly, a crimping connector in which an O-ring is wound around the crimping portion instead of the helical spring is also conceivable.

  It can be used for all crimp terminals and crimp connectors.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 shows a cable crimp terminal according to a first embodiment of the present invention, in which (A) is a perspective view showing a state before the cable end is inserted into the cable crimp terminal 1, and (B) is a cable end. It is a perspective view which shows the state after inserting in the cable crimping terminal 1 and crimping | bonding. The crimping terminal for cables of the 2nd example which does not need the special crimping tool of the present invention is shown, (A) is a perspective view showing the state before inserting the cable end into cable crimping terminal 1. B) is a perspective view showing a state after the cable end is inserted into the cable crimping terminal 1 and crimped. The crimp terminal for cables of the 3rd Example which does not require the special crimping tool of the present invention is shown, (A) is a perspective view showing the state before inserting a cable end into cable crimp terminal 1, B) is a perspective view showing a state after the cable end is inserted into the cable crimping terminal 1 and crimped.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 .... Crimp terminal for cables 2 .... Terminal board part 3 .... Crimp part 4 .... Gap 5 ... Helical spring 6 ... Cut-and-raised piece 7 .... ··· Locking projection 8 ··· Projection 9 ··· Cable 10 · · · Gap 11 · · · Crimp sleeve

Claims (7)

  A crimping terminal having a crimping part for crimping and connecting a cable, comprising a terminal board part and a crimping part, the crimping part being formed in a round cylindrical shape or a polygonal cylindrical shape, in the same direction as the cable insertion direction A cable and a crimp terminal are provided by providing a spiral spring so as to cover the cylindrical crimping part and providing a gap in the cylindrical seam, and crushing the cylindrical part of the crimping part by the contraction force of the helical spring A crimp terminal for a cable, characterized in that is crimp-locked.   A crimping terminal having a crimping part for crimping and connecting a cable includes a terminal board part and a crimping part. The crimping part has a round cylindrical shape or a polygonal cylindrical shape. Instead of the helical spring provided so as to cover the cylindrical shape, the cable and the crimping terminal can be crimped and locked by winding a rounded plate spring into a cylindrical shape and winding it around the crimping part. The crimp terminal for cables according to claim 1.   A crimping terminal having a crimping part for crimping and connecting a cable includes a terminal board part and a crimping part. The crimping part has a round cylindrical shape or a polygonal cylindrical shape. The cable and the crimp terminal can be crimped and locked by providing an O-ring so as to wind the tubular crimp portion instead of the helical spring provided so as to cover the tubular shape. The crimp terminal for cables according to claim 1.   In the crimp terminal provided with a crimping portion for crimping and connecting a cable, a cut-and-raised piece or a projection that can lift an end of the cable is formed on the terminal substrate portion. The crimp terminal for a cable according to any one of 3.   In a crimping connector for connecting cables by connecting, a crimping part with a gap at the joint is formed at both ends, and the crimping part is formed in a round cylindrical shape or a polygonal cylindrical shape. A gap is formed in the cylindrical joint in the same direction as the direction, a helical spring is provided so as to cover the cylindrical crimping portion, and the cylindrical shape of the crimping portion is crushed by the contraction force of the helical spring. A crimping connector for cables, wherein the cable and the crimping connector are clamped and locked.   In place of the helical spring provided so as to cover the crimping part, the cable and crimping connector can be crimped and locked by winding a rounded plate spring into a cylindrical shape and winding it around the crimping part. The crimp connector for a cable according to claim 5, wherein the connector is a crimp connector.   The cable and the crimping connector can be crimped and locked by winding an O-ring around the crimping part instead of the helical spring provided so as to cover the crimping part. Crimp connector for cables.

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