JP2577272B2 - Connector terminal fixing structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION << Industrial Application >> The present invention relates to a terminal fixing structure of a connector for an electric wire used in an electronic control device or the like.

<< Prior Art >> A conventional terminal fixing means in this type of connector is provided with a terminal press-in hole b in a terminal holder a as shown in FIG.
A terminal c having a diameter larger than the diameter of the terminal press-fitting hole b is fixed to the terminal press-fitting hole b by press-fitting.
A terminal c having a diameter larger than the diameter of the terminal press-fit hole b as shown in the figure and having a projection d is pressed into the terminal press-fit hole b, or a terminal having a constricted portion e as shown in FIG. c was integrally formed with the terminal holder a.

<< Problems to be Solved by the Invention >> However, in the above-mentioned conventional example, press-fitting or integral molding is used, and the number of steps for fixing the terminals is increased, which leads to an increase in connector cost. There was a problem.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a terminal fixing structure that can securely fix a terminal with a simple configuration.

<< Means for Solving the Problems >> In order to achieve the above object, a terminal fixing structure for a connector according to the present invention comprises an electric contact terminal, an external conductor and an insulative terminal holding fixed inside the external conductor. A connector having a body and a terminal held by the terminal holder, wherein the electrical contact terminal is inserted and fixed in a housing; and a terminal insertion hole formed in the terminal holder and coming out of both end surfaces of the terminal holder. A punch insertion recess formed on the peripheral surface of the terminal holding body and located immediately above the terminal insertion hole, a hole provided in the terminal, and a punch inserted into the punch insertion recess; A protrusion formed as a part of the terminal holder, formed by pressurizing a body, and protruding into the hole of the terminal inserted into the terminal insertion hole and fixing the terminal to the terminal holder; Equipped It is characterized by having.

<< Operation >> With this configuration, the terminal is inserted into the terminal insertion hole of the terminal holder, and the terminal holder is pressurized by a punch inserted into the punch insertion recess, and a part of the terminal holder is pressed. The terminal can be fixed to the terminal holder by projecting a certain protrusion into the hole of the terminal.

In this way, not only can the terminal be securely fixed with a simple configuration, but the number of steps is reduced compared to the conventional method of fixing the terminal to the terminal holder by press-fitting or integral molding, thereby increasing the cost of the connector. The problem of inviting can be solved.

<< Example >> Hereinafter, the present invention will be described with reference to FIGS. 1 to 7.

FIG. 1 is a perspective view of a connector before connection, FIG. 2 is an exploded perspective view of an electric contact terminal, and FIG. 3 is a perspective view of a connector fixing structure according to the present invention before the terminal is inserted into a terminal holder. FIGS. 4 and 5 are explanatory views of a step of fixing the terminal to the terminal holder, FIG. 6 is an explanatory view showing a state in which an electric wire is crimped to the terminal of the electric contact terminal, and FIG. 7 is an electric contact. It is explanatory drawing which shows the state which crimped the electric wire to the terminal.

The connector A has a female connector B and a male connector C. The female connector B is provided with an electrical contact terminal 1 in a housing D.

The electric contact terminal 1 includes an external conductor 3, an insulator 4 as a terminal holder, and two terminals 5.

The outer conductor 3 is divided into three regions and includes a cylindrical terminal holding portion 7, a conductor crimping portion 6, and a sheath crimping portion 8, and the conductor crimping portion 6 includes crimping pieces 9, 9 standing up in a U-shape. The sheath crimping portion 8 includes crimping pieces 11, 11 erected in a U-shape. A crimping piece 9 is provided at the rear of the peripheral portion of the terminal holding portion 7.
Jig insertion openings 10a and 10b are formed in the upright direction of 9, 11, and 11, respectively.

The terminal 5 comprises a terminal body 14, a core wire crimping part 15, and a core wire covering crimping part 16. The terminal body 14 is plate-shaped, and has a hole 14a at the center. The core wire crimping portion 15 includes crimping pieces 17, 17 standing up in a U shape, and the core wire covering crimping portion 16 includes crimping pieces 18, 18 standing up in a U shape.

The insulator 4 is made of a synthetic resin. The insulator 4 has a terminal insertion hole 19 extending in the front and rear direction in parallel with the left and right. Recess
The punch insertion recesses 20 are located right above the terminal insertion holes 19 and the bottom surfaces 20 of the punch insertion recesses 20 are formed.
The space between a and the terminal insertion hole 19 is thinner than the others.

Then, as shown in FIGS. 4 and 5, the terminal body 14 of the terminal 5 is inserted into the terminal insertion hole 19 of the insulator 4, the punch 21A is inserted into the punch insertion recess 20, and the insulator 21 is formed by the punch 21A. 4 is pressurized so that the rush portion 4a which is a part of the insulator 4 is
The terminal 5 is fixed to the insulator 4 by protruding into the hole 14a.

The electrical contact terminal 1 is configured by housing the insulator 4 to which the terminal 5 is fixed in the terminal holding portion 7 of the external conductor 3 as described above. In this case, the core wire crimping portion 15 and the core wire covering crimping portion 16 of the terminal 5 are connected to the jig insertion holes provided in the conductor crimping portion 6.
It is located within 10a, 10b.

In order to connect the electric wire 2 to the electric contact terminal 1, first, the end of the electric wire 2 is processed as shown in FIG. 2 to expose the conductor 22 from the sheath 21 and expose the core coating 23 from the conductor 22. Then, the core wire 24 is exposed from the core wire coating 23.

The distal end portion of the electric wire 2 is inserted into the electric contact terminal 1, the core wire 24 of the electric wire 2 is inserted between the crimping pieces 17, 17 of the terminal 5, and the core coating 23 is inserted between the crimping pieces 18, 18 of the core coating crimping section 16. The conductor 22 is inserted into the conductor crimping portion 6 of the outer conductor 3 and the sheath 21 is inserted into the sheath crimping portion 8, respectively. As shown in FIG. 6, anvils 24a and 24b and crampers 25a and 25b serving as crimping jigs for terminals are provided. The core wire 24 is crimped with the crimping pieces 17 and 17 using the anvils 26a and 26b and the clampers 27a and 27b, which are crimping jigs. 6, the sheath 21 is connected to the crimping pieces 11, 11 of the sheath crimping portion 8.
Then, the shielded wires 2 are connected to the electric contact terminals 1 by crimping them at once.

<< Effects of the Invention >> As described above, according to the terminal fixing structure of the connector according to the present invention, the electric contact terminal is formed of the outer conductor, the insulative terminal holder fixed inside the outer conductor, and the terminal holder. A connector comprising a terminal held by a body, wherein the electrical contact terminal is inserted and fixed in a housing; a terminal insertion hole formed in the terminal holder, which is inserted into both end surfaces of the terminal holder; Pressing the terminal holder with a punch insertion recess formed on the peripheral surface of the terminal and positioned directly above the terminal insertion hole, a hole provided in the terminal, and a punch inserted into the punch insertion recess. And a projecting portion that is a part of the terminal holder that projects into the hole of the terminal inserted into the terminal insertion hole and fixes the terminal to the terminal holder. ,Before The terminal is inserted into the terminal insertion hole of the terminal holder, and the terminal holder is pressurized by a punch inserted into the punch insertion recess, so that a protrusion, which is a part of the terminal holder, is inserted into the terminal holder. The terminal can be fixed to the terminal holder by protruding into the hole.

In this way, not only can the terminal be securely fixed with a simple configuration, but the number of steps is reduced compared to the conventional method of fixing the terminal to the terminal holder by press-fitting or integral molding, thereby increasing the cost of the connector. The problem of inviting can be solved.

In addition, there is no need to provide a protrusion or the like for fixing the terminal in advance on the terminal holder, and the mold for molding the terminal holder has a simple configuration, and the mold cost is reduced.

In addition, when the terminal is inserted into the terminal insertion hole of the terminal holder, the hole of the terminal is not located immediately below the punch insertion recess. Even if the terminal holder is pressed by the punch inserted into the terminal, a part of the terminal holder does not protrude into the hole of the terminal, so that an overload occurs in the punch,
By detecting this overload, incomplete insertion of the terminal can be detected, and it is possible to prevent the connector with the incompletely inserted terminal from being shipped as a finished product.

[Brief description of the drawings]

FIG. 1 is a perspective view of a connector before connection, FIG. 2 is an exploded perspective view of an electric contact terminal, and FIG. 3 is a perspective view of a connector fixing structure according to the present invention before the terminal is inserted into a terminal holder. FIGS. 4 and 5 are explanatory views of a step of fixing the terminal to the terminal holder, FIG. 6 is an explanatory view showing a state in which an electric wire is crimped to the terminal of the electric contact terminal, and FIG. 7 is an electric contact. FIG. 8 to FIG. 10 are explanatory views showing a state in which an electric wire is crimped to a terminal, and FIG. 8 to FIG. 1 ... electric contact terminal, 2 ... wire, 3 ... outer conductor, 4
... insulator (terminal holder), 5 ... terminal, 14a ... hole.

Claims (1)

(57) [Claims] 1. An electric contact terminal comprising an outer conductor, an insulative terminal holder fixed in the outer conductor, and a terminal held by the terminal holder, wherein the electric contact terminal is inserted into a housing. In the fixed connector, a terminal insertion hole formed in the terminal holder and coming out of both end surfaces of the terminal holder, and a punch insertion formed in a peripheral surface of the terminal holder and located right above the terminal insertion hole. A concave portion, a hole provided in the terminal, and a hole formed in the terminal insertion body formed by pressing the terminal holder with a punch inserted in the punch insertion concave portion, and the terminal inserted in the terminal insertion hole. And a projecting portion which is a part of the terminal holder for projecting into the terminal holder and fixing the terminal to the terminal holder.