JP2000348803A - Terminal fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely conduct terminal insertion work with a pushing jig by installing a to-be-pressed part in which a pressing region in the width direction with the pushing jig is made larger than the thickness of a side wall at a rear end part of the side wall of a terminal fixture having a pair of side walls. SOLUTION: An electric wire W is set to the upper part of a pressure contact terminal 20 in a state that the pressure contact terminal 20 is inserted into a housing recess 31 of a fixed jig 30. The electric wire W is interposed between regulating parts with a pressure contact jig, a pressure contact blade 23 is pressed without generating position slippage to keep good conductivity with the pressure contact terminal 20. A connector housing is arranged in the front of the fixed jig 30, a cavity and the housing recess 31 are matched, a pressing part 41 of a pushing jig 40 is brought into contact with a to-be-pressed part 50 from the rear of the pressure contact terminal 20, and the pressure contact terminal 20 is pushed out in the front. Since the width of the to-be-pressed part 50 is set larger than the wall thickness of a side wall 22, a pressing region in the width direction with the pushing jig 40 is made sufficient, and the pressure contact terminal 20 can correctly be inserted into the cavity of the connector housing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal fitting.

[0002]

2. Description of the Related Art Conventionally, as a method of pressing an electric wire to a press-connecting terminal, a method of press-connecting an electric wire with a press-fit terminal accommodated in a connector housing or a method of performing pressure-pressing work outside a connector housing and then pressing the wire. It is known to insert a press contact terminal into a connector housing.

FIG. 8 shows a pressure contact terminal applicable to the housing external pressure contact method. The press contact terminal 1 is formed by pressing a metal plate.
It has a pair of left and right side walls 2 and a press-contact blade 3 formed by cutting a part of the side walls 2 inward. After pressing the electric wire 4 in a state in which the press contact terminal 1 is housed in a predetermined fixing jig (not shown), the fixing jig is fixed by a pressing jig 5 addressed to the rear end surface 2A of the side wall 2. From the front and inserted into a cavity of a connector housing (not shown). As an example of a method of performing the pressure welding work outside the connector housing, there is a method described in Japanese Patent Application Laid-Open No. 7-272815.

[0004]

However, since these side walls 2 are formed in a flat plate shape whose wall faces in parallel with the pressing direction of the pressing jig 5, the rear end of the side wall 2 has a pressing jig. 5, the pressing area can be secured only by the thickness of the side wall 2, so that it was difficult to accurately push out the press contact terminal 1. The present invention has been completed based on the above-described circumstances, and has as its object to reliably perform an operation of inserting a terminal fitting by a pressing jig.

[0005]

As means for achieving the above object, the present invention according to claim 1 has a pair of side walls, and in a state where an electric wire is already connected, the side wall is pushed from behind by a pushing jig. In the terminal fitting adapted to be inserted into the housing member by pressing the rear end portion, a rear end portion of the side wall is provided with a pressing area in the width direction by the pressing jig of the side wall. It is characterized in that a pressed portion larger than the wall thickness is provided.

According to a second aspect of the present invention, in the apparatus of the first aspect, further comprising a press-contact blade for press-connecting the electric wire, the pressed portion is provided with the press-contact blade prior to pressing the electric wire against the press-contact blade. The present invention is characterized in that a regulating portion capable of positioning the electric wire in the width direction is provided. A third aspect of the present invention is characterized in that, in the second aspect, the regulating portion is provided with a guiding portion that guides the electric wire by expanding in a tapered shape in the width direction.

[0007]

<Operation and effect of the invention><Invention of claim 1> When the terminal fitting is inserted into the housing member, the pressed area to which the pressing jig is addressed has a pressing area in the width direction larger than the wall thickness of the side wall. Is increased, the work of inserting the terminal fitting by the pushing jig can be stabilized.

<Invention of Claim 2> Before the electric wire reaches the press contact blade, the electric wire can be positioned in the width direction by the regulating portion in advance, so that good press contact can be performed. <Invention of claim 3> Even if the electric wire is displaced in the width direction, the misalignment can be corrected by the guiding portion and the positioning can be performed reliably.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. In this embodiment, as shown in FIG. 1, an example of a press-contact terminal 20 that is press-connected to a terminal of an electric wire W will be described.
0 (a housing member that is a constituent element of the present invention)
, And then inserted into the connector housing 10.

The connector housing 10 is provided with a plurality of cavities 11 opened at front and rear end surfaces thereof, which are divided into upper and lower two stages and are arranged side by side in each stage. The terminal 20 can be accommodated. Also, as shown in FIG.
The width dimension of the front part 12 is substantially the same as the width dimension of the main body part 21 of the press contact terminal 20, and the width dimension of the rear part 13 is
0 is larger than the width between the side walls 22.

The press contact terminal 20 is formed by pressing a metal plate, and has a box-shaped main body 21 which is electrically connected to a terminal on the other side. The side wall 22 forming the main body portion 21 is formed to extend rearward from the main body portion 21, and the extension portion of the side wall 22 includes a press-contact blade 23 for press-connecting the electric wire W and an electric wire W. Caulking nail 2 to fix
4 are sequentially provided before and after. As described above, the side wall 22 forming the connection portion with the electric wire W is, in detail, a high-back portion 26 having the press-contact blade 23 and a low-back portion 28 having the caulking claw 24.
The rear end surface 27 of the high-back portion 26 is formed substantially perpendicular to the length direction of the press contact terminal 20 (the direction of insertion into the connector housing 10).

The press-contact blades 23 are provided on the high back portions 2 of the left and right side walls 22.
A part of 6 is cut and raised inward to form a pair in front and rear. As shown in FIG. 3, a tapered portion 25 for guiding the electric wire W to the center in the width direction is formed at the upper end of the press contact blade 23. The wire W is pressed between the left and right pressure contact blades 23 from above, so that the coating is evenly cut off, and the core wire comes into contact with the pressure contact blades 23 in a conductive manner. The central position in the direction is a normal position for ensuring a good conduction state between the electric wire W and the press contact terminal 20.

As shown in FIG. 2, the operation of press-connecting the electric wire W to the press-connecting terminal 20 is as follows.
This is performed by using a pressure welding jig (not shown) in a state of being inserted in the inside of the cylinder. The fixing jig 30 is formed with a receiving recess 31 capable of receiving the press-contact terminals 20, which is partitioned by a partition wall 32. The upper end of the partition 32 is formed in a tapered shape.

The caulking claws 24 are formed so as to protrude upward from the low back portions 28 of the left and right side walls 22, and are formed so as to be displaced in the left and right directions. The caulking claw 24 is bent inward by a predetermined pressure welding jig in a state where the electric wire W is accommodated therein, thereby fixing and holding the electric wire W by caulking.

Cavity 11 of connector housing 10
As shown in FIG. 4, the operation of inserting the press contact terminal 20 to which the electric wire W has been connected is performed by pressing the press contact terminal 20 housed in the housing recess 31 of the fixing jig 30 by the pressing jig 40. Extruded and done. The pressing jig 40 has a width slightly smaller than the width of the housing recess 31 and has a pair of left and right pressing portions 41 protruding forward by being formed in a forked shape at the distal end side. . The pressing portion 41 is formed to have a predetermined width, and can press the rear end of the high-back portion 26 of the side wall 22 of the press contact terminal 20.

At the rear end of the high back portion 26 pressed by the pressing jig 40, the pressed portion 5 which is a component of the present invention is provided.
0 is provided. The pressed portions 50 are formed as a pair by bending a piece protruding from the rear end surface 27 of the left and right high back portion 26 inward at a substantially right angle. As shown in FIG. 5, the width of each pressed portion 50 is larger than the wall thickness of the side wall 22 and slightly smaller than the width of the pressing portion 41 of the pressing jig 40. The rear end surface 51 of the pressed portion 50 is formed as a plane perpendicular to the pressing direction of the pressing jig 40 and is parallel to the front end surface 42 of the pressing portion 41 of the pressing jig 40.

As shown in FIG. 3, the distance between the opposed end faces of the pressed portion 50 is substantially the same as the outer diameter of the electric wire W, and the opposed end faces are defined as regulating portions 52. This restricting portion 52 is used to press the wire W
Can be restricted in the width direction when the wire is displaced downward. The upper end of the restricting portion 52 is formed in a tapered shape, and is provided with a guiding portion 53 that can guide the electric wire W to a regular position when performing the pressure welding operation. The height position of the guide portion 53 is set higher than the tapered portion 25 of the press contact blade 23.

This embodiment has the above-described structure, and its operation will be described below. First, as shown in FIG. 2, the electric wire W is set above the press contact terminal 20 in a state where the press contact terminal 20 is inserted into the accommodation recess 31 of the fixing jig 30.

Next, by lowering a pressing jig (not shown), the electric wire W is displaced downward and pressed against the pressing blade 23 as shown in FIG. At this time, the electric wire W displaced downward is guided to the center position between the press-contact blades 23 along the guiding portion 53, and is then sandwiched between the regulating portions 52 so that the displacement in the width direction is regulated. By arriving at the press contact blades 23, positioning is performed in advance at the center position between the press contact blades 23 before being pressed. When the electric wire W is displaced downward from this state, the electric wire W protrudes into the press contact blade 23 without being displaced in the width direction while being sandwiched between the restricting portions 52, and its coating is cut off evenly. The core wire is conductively connected to the press contact blade 23. Thereby, the electric wire W is pressed at a regular position where the conduction state with the press contact terminal 20 can be kept good.

After the pressing operation of the electric wire W is completed, the connector housing 10 is arranged in front of the fixing jig 30 so that the cavity 11 and the accommodation recess 31 are aligned. Then, as shown in FIG.
The pressing portion 41 of the pressing jig 40 is brought into contact with the
Push 0 forward.

Here, as shown in FIG. 5, the width dimension of the pressed portion 50 is set to be larger than the wall thickness of the side wall 22, so that the pressing area by the pressing jig 40 in the width direction is sufficiently ensured. it can. Thereby, the pressing operation of the press contact terminal 20 by the pressing jig 40 can be performed in a stable state, and the press contact terminal 20 can be accurately inserted into the cavity 11 of the connector housing 10.

The rear end face 51 of the pressed part 50 is parallel to the front end face 42 of the pressing part 41.
, And the press-contacting terminal 20 can be pushed straight out by the pressing jig 40. This allows
The side wall 22 supporting the pressed portion 50 is prevented from being deformed so as to fall outward or inward with the pushing operation of the press contact terminal 20.

Pressure contact terminal 2 inserted into cavity 11
0 indicates that the main body 21 is in the cavity 11 as shown in FIG.
Of the cavity 11, the rear portion 13 of the cavity 11
Is housed with clearance. in this way,
Since the rear portion 13 of the cavity 11 is formed with a margin in the width direction, even if the side wall 22 is slightly deformed so as to spread outward with the pressing of the electric wire W to the press-connecting terminal 20, even if the side wall 22 is slightly deformed. The press contact terminal 20 can be reliably inserted into the cavity 11 without hitting the end surface of the connector housing 10. Further, since the main body 21 is fitted into the front portion 12 of the cavity 11, the fluttering terminal 20 is prevented from fluttering in the width direction after insertion.

According to the present embodiment as described above,
At the rear end of the side wall 22 pressed by the pressing jig 40, a pressed portion 50 having a pressing area in the width direction larger than the wall thickness of the side wall 22 is provided.
The pressing operation of the press contact terminal 20 by the pressing can be stabilized, and the cavity 11 of the connector housing 10 can be surely provided.
The press contact terminal 20 can be inserted therein.

As a modification of the first embodiment, as shown in FIG. 7, the shape of the pressed portion 50 is changed. By pressing the rear end of the high back portion 26 of the side wall 22 inward into the press contact terminal 20,
A pressed portion 50A having a V-shaped shape and protruding inward is provided. The top portion 54 of the pressed portion 50A is
The pressing area in the width direction by the pressing jig 40 can be secured larger than the wall thickness of the side wall 22 by an amount protruding inward from the inner surface of the side wall 22. Further, since the upper surfaces of the left and right pressed portions 50A are formed as inclined surfaces 55 inclined toward the center in the width direction of the press contact terminals 20, the upper surfaces of the pressed portions 50A function as guides for guiding the electric wire W to the normal position. Has become.
Other structures, operations and effects are the same as those of the above-described first embodiment, and a duplicate description will be omitted.

<Other Embodiments> The present invention is not limited to the embodiments described above with reference to the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition, various changes can be made without departing from the scope of the invention. (1) In the above-described embodiment, the crimping type terminal fitting has been described. However, the present invention can also be applied to a crimping type that is crimped to the end of an electric wire. The pressed portion may be provided at the rear end of the portion forming the box-shaped main body.

(2) In comparison with the crimping type terminal fitting shown in the above-described embodiment, the crimping type terminal fitting generally has the same size as the main body, but has a larger size than the main body. As for the portion, both the height and the length become shorter. Such crimp-type terminal fittings having different sizes can be accommodated in the cavity of the connector housing shown in FIG. 6 in the above embodiment, and the accommodated terminal fitting has its main body fitted into the front portion of the cavity. The fluttering is suppressed by being combined.

(3) In the above-described embodiment, the height position of the guide portion is set higher than the upper end portion of the press contact blade.
The height may be the same as the upper end of the press contact blade, or may be a position lower than the upper end. (4) In the above-described modification, the space between the apexes is made smaller than the outer diameter of the wire, and the pressed portion is formed such that the lower surface of the pressed portion presses the upper end of the wire pressed against the wire. In such a case, it is possible to suppress the wire from coming out upward.

[Brief description of the drawings]

FIG. 1 is a perspective view of an insulation displacement terminal and a connector housing according to an embodiment of the present invention.

FIG. 2 is a partially cutaway perspective view showing a state before an electric wire is pressed against a press contact terminal.

FIG. 3 is a cross-sectional view showing the operation of the electric wire accompanying the pressure welding operation.

FIG. 4 is a partially cutaway perspective view showing an operation of pushing out a press contact terminal by a pressing jig after press contact.

FIG. 5 is a plan view of the same.

FIG. 6 is a cross-sectional plan view showing a state where a press contact terminal is inserted into a cavity.

FIG. 7 is a perspective view showing a modification.

FIG. 8 is a perspective view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Connector housing (accommodating member) 20 ... Pressure contact terminal (terminal fitting) 22 ... Side wall 40 ... Pushing jig 50 ... Pressed part 52 ... Restriction part 53 ... Guide part W ... Electric wire

Claims (3)

[Claims] 1. A pair of side walls having a pair of side walls, and a rear end portion of the side walls being pressed from behind by a pressing jig in a state where the electric wires are already connected, so that the side walls are inserted into the housing member. A terminal fitting, wherein a pressed portion in which a pressing area in a width direction of the pressing jig is larger than a wall thickness of the side wall is provided at a rear end portion of the side wall. . 2. The apparatus according to claim 1, further comprising a press-contact blade for press-connecting the electric wire, wherein the pressed portion includes a wire-width member that presses the electric wire in a width direction before pressing the electric wire against the press-contact blade. A terminal fitting provided with a positioning part that can be positioned. 3. The terminal fitting according to claim 2, wherein the restricting portion includes a guide portion that guides the electric wire by expanding in a tapered shape in a width direction.