JPS6258570A - Pressure-welding fixing method of electric wire in pressure-welding terminal joint block and its structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a method for pressure welding and fixing electric wires in a joint block (hereinafter simply referred to as a block) equipped with a pressure contact terminal, and a structure of the block used for carrying out the pressure welding. Regarding.

(Prior Art) Conventionally, in a block equipped with a pressure contact terminal, the pressure connection of an electric wire to the pressure contact terminal (hereinafter simply referred to as pressure contact) and the fixing of the pressure connected wire are shown in FIG. 5, a partially cutaway perspective view, and FIG.
This is done by means as shown in the BB cross section in FIG.

That is, in FIG. 5, A' is a block, B' is a cover, and block A' is a block A' in which a plurality of press-contact terminals 2 are inserted in a plurality of rows corresponding to a preset wire wiring route. ' is inserted into the board part 1, and the board part 1
A convex portion 3 is provided on the insertion side end of the electric wire W so as to protrude in a direction perpendicular to the axial direction of the electric wire W that is press-welded, and the cover B',
The flat plate part 4 covers the entire surface of the wire pressure welding part in the base plate part 1 of the block A', and a protruding part 5 having a concave part 6 formed on the back surface is connected to the end of the flat plate part 4. However, cover B'
The flat plate part 4 protects the electric wire press-contact part on the substrate part 1 from external interference, and the concave part 6 on the back surface of the protruding part 5 has the function of fixing the electric wire bent at the convex part 3.

This electric wire fixing is performed when an external force due to tension in the direction of arrow A is applied to the electric wire W press-welded to the press-contact terminal 2.
The external force is transmitted to the wire pressure welding part of the pressure contact terminal, and the wire may detach or break from the pressure contact terminal, causing a connection failure, or
This is mainly done to prevent damage and poor contact.

Conventionally, the electric wire W is press-connected to the press-contacting terminal 2 and the electric wire is fixed to the block A' by the method described below.

That is, as shown in the perspective view in FIG. 7 and the explanatory diagrams in FIGS. 3. In this case, the electric wire pressure welding jig 7 and the electric wire bending jig 8 mounted on one side wall of the pressure welding jig 7 so as to be vertically movable are arranged above the pressure welding and bending position of the electric wire W1. Note that a plurality of pressure welding recesses 7a corresponding to the pressure contact terminals 2 are formed at the bottom of the wire pressure welding jig 7, and a wire bending jig 8 is formed.
A recess 8a is formed at the bottom of the recess 8a for bending the electric wire across the protrusion 3.

Next, as shown in FIG. 8(b), the wire bending jig 8 is held at the upper part of the side wall of the pressure welding jig 7, and the pressure welding jig 7 is lowered in the direction of the arrow. Electric wire W
1 to the pressure contact terminal 2. Next, as shown in FIG. 8(d), the electric wire bending jig 8 is lowered in the convex direction of the arrow while the pressure welding jig 7 remains lowered, and the electric wire W1 placed on the convex part 3 of the base plate part 1 is bent. It is bent along the convex part 3 by the concave part 8a of the bending jig 8. The electric wire W in FIGS. 7 and 8(d) is shown in a state in which it is pressed into contact with the pressure contact terminal 2 and is bent on the convex portion 3.

Next, after the pressure welding jig 7 and the wire bending jig 8 are separated from the substrate part l, the cover B' is attached as shown in FIGS. 5 and 6, so that the wire is bent at the convex part 3. The electric wire W is press-fitted into the recess 6 on the back surface of the cover B' and fixed.

However, such conventional electric wire pressure welding and fixing methods have the following drawbacks. That is, one of them is when placing the electric wire on the pressure contact terminal 2 and the convex part 3, as shown in FIG. 8(a) or (
As shown in FIG. 8(b), since the height of the protrusion 3 is higher than the height of the pressure contact terminal 2, there are places where the electric wire W1 is not placed in contact with the pressure contact terminal 2 on the side close to the protrusion 3. When the pressure welding jig 7 is lowered in the direction of the four arrows as shown in bl,
The pressure welding jig 7 first contacts point P of the electric wire W1 on the convex portion 3 side,
- The electric wires are not simultaneously and accurately pressure-connected to the plurality of pressure-connecting terminals arranged in a row, and there is a possibility that some parts of the wires may be damaged or defective.

In addition, as shown in FIG. 6, the other method is to fit the cover B' onto the wire pressure contact surface on the base plate 1 and the wire bending surface on the convex portion 3 to protect the wire pressure contact portion and at the same time. Connect the electric wire W to the convex part 3
When fixed in the concave part 6 of the cover B', the height hl from the bottom of the board part 1 at the wire fixing part to the top surface of the protruding part 5 of the cover B' is the height hl from the bottom of the board part 1 at the wire pressure welding part to the top surface of the protruding part 5 of the cover B'. The height h2 to the top surface of the flat plate part 4 of block A' is increased by the height of the convex part 3, and the space occupied by block A' becomes large.

(Problems to be Solved by the Invention) The present invention has been made by focusing on the above-mentioned drawbacks of the conventional wire pressure welding fixing method in a block on which pressure contact terminals are mounted. It is an object of the present invention to provide a method for pressure-welding and fixing electric wires in which electric wires can be pressure-welded simultaneously and accurately and the space occupied by the block can be reduced, and a block structure used for carrying out this method.

(Means for Solving the Problems) The present invention will be described in detail below with reference to the accompanying drawings showing embodiments.

FIG. 1 shows a partially cutaway perspective view of the electric wire pressure-welding fixing structure according to the present invention in a block equipped with a pressure-welding terminal, and FIG. 2 shows a cross-sectional view taken along the line AA in FIG. 1.

In the figure, the electric wire pressure welding fixing structure according to the present invention is similar to the conventional block A' in that the pressure welding terminals 2 are mounted at predetermined positions in multiple rows on the base plate 1 of block A, but in the present invention, In place of the conventional convex portion 3, a concave groove 9 in a direction perpendicular to the insertion direction of the electric wire W is formed at the end of the wire insertion side of the base plate 1, and the cover B has a concave groove 9 at a position on the back surface corresponding to the concave groove 9. A convex portion 10 that fits into the bent portion of the wire bent in the groove 9
is provided protrudingly, the surface 11 is formed into a flat surface, and a fitting wall 12 for holding the wire is provided on the rear end edge. Note that 13 is a plurality of electric wires W formed on the rear end side wall of the substrate portion 1.
This is a groove for insertion.

In order to press and fix the electric wire W to the pressure contact terminal 2 of the block A using the electric wire pressure contact fixing structure of the present invention,
First, as shown in FIG.
It is placed horizontally on a plurality of pressure contact terminals 2 in each row arranged in a plurality of rows above.

In this case, according to block A of the present invention, there is no convex portion higher than the pressure contact terminal 2 on the substrate portion 1, so that this horizontal $i! Easy to install. Next, as shown in FIG. 4, the wire W is first pressed against the pressure contact terminal 2 using the pressure contact jig 7, and then the wire bending jig 8, which is attached to the side wall of the pressure contact jig 7 so as to be movable up and down, is moved upward as shown by the dashed-dotted line. Lower it in the two directions of the arrow from the position,
An electric wire W placed on the groove 9 at right angles to the longitudinal direction of the groove 9 is bent into the groove 9. In this case, the electric wire bending jig 8 used in the present invention has a chevron-shaped protrusion 8b formed on its bottom. Next, a pressure welding jig 7 and a wire bending jig 8
as shown in FIG. The electric wire W is fixed by fitting into the inner bent portion and fitting the electric wire W into the rear end recessed groove 13 of the base plate part 1 by means of the rear end fitting wall 12 of the cover B.

(Function) As explained above, according to the wire pressure welding and fixing method and its structure of the present invention in a block equipped with a pressure contact terminal, the conventional wire fixing method provided at the end of the base plate 1 of block A can be used. By providing the concave groove 9 instead of the convex portion 3, the electric wires placed on the top surface of the plurality of insulation displacement terminals arranged in each row can be placed horizontally and evenly as shown in Fig. 3. The electric wire contacts each pressure contact terminal 2, and the pressure contact of the electric wire by the pressure contact jig is simultaneously and reliably performed on each pressure contact terminal 2. In addition, as shown in FIG. 2, the height h3 from the bottom surface of the substrate section 1 at the wire fixing section to the top surface of the cover B is the height h3 from the bottom surface of the substrate section 1 at the wire pressure welding section to the top surface of the cover B.
It is the same as 2.

(Effects of the Invention) The present invention has the configuration and operation described in detail above, and there is no formation of a convex portion higher than the height of the pressure contact terminal on the board surface of the block to which the pressure contact terminal is attached, and the electric wire is connected by the pressure contact jig. Since each row is simultaneously and reliably pressed into contact with multiple insulation displacement terminals arranged in each row, leakage or connection failure of the wires to the insulation displacement terminals is completely prevented. By making the height of the fixing part the same as the height of the protective flat plate part of the wire pressure welding part, the block can be formed into a small size, so that advantages such as being able to reduce the space occupied by the block can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view of the electric wire pressure welding fixing structure according to the present invention in a joint 1-block equipped with a pressure welding terminal, Fig. 2 is a partial cross-sectional view taken along the line A-A in Fig. 1, and Fig. 3 is a cross-sectional view of the present invention. FIG. 4 is an explanatory diagram of the electric wire placement state according to the present invention, FIG. 4 is an explanatory diagram of the electric wire pressure welding and bending state according to the present invention, and FIG. 5 is a partially cutaway perspective view showing a conventional electric wire pressure welding fixing structure in a joint block equipped with a pressure welding terminal. Fig. 6 is a partial sectional view taken along line BB in Fig. 5, Fig. 7 is a perspective view illustrating the pressure welding and bending operations of electric wires in a conventional joint block, and Fig. 8 f.
a) to (d) are chronological explanatory diagrams showing the order of pressure welding and bending operations of the same electric wire. DESCRIPTION OF SYMBOLS 1... Board part, 2... Pressure contact terminal, 3... Convex part, 5
・・・Protrusion part, 6... Recessed part, 7... Wire pressure welding jig,
8... Wire bending jig, 9... Concave groove, 10... Convex portion. Patent applicant: Yazaki Sogyo Co., Ltd.

Claims (2)

[Claims] (1) A method in which an electric wire is press-contacted to a press-contact terminal attached to a joint block, the electric wire is bent, and the electric wire is fixed at the bent part by the joint block and the cover, in which the electric wire is placed horizontally on the press-contact terminal. Then, the electric wire is bent into a concave groove formed at the end of the electric wire insertion side of the joint block in a direction perpendicular to the electric wire insertion direction, and a protrusion is provided on the back surface of the cover at the bent portion of the electric wire. A method for press-welding and fixing electric wires in a press-welding terminal joint block, the method comprising engaging convex portions that have been pressed together. (2) In a wire pressure welding and fixing structure consisting of a joint block equipped with a pressure welding terminal and a cover of the joint block, a concave groove is formed in the wire insertion side end of the joint block in a direction perpendicular to the wire insertion direction. A structure for press-fitting and fixing an electric wire in a press-contact terminal joint block, characterized in that a protrusion for fixing the electric wire in the groove is formed on the back surface of the cover at a position corresponding to the groove of the joint block.