JP2573947Y2 - ID terminal - Google Patents

Description

[Detailed description of the invention] "Industrial application field" The invention has a press-connecting blade consisting of a U-shaped slot, press-fits an insulated wire, and conducts connection between the wire conductor and the press-connecting blade. It relates to a press contact terminal.

2. Description of the Related Art Referring to FIG. 2, a press contact terminal has a plate press contact blade 2 having a U-shaped slot 1 with an upper opening, and presses an uncoated electric wire 4 into the U-shaped slot 1. Cut the coating with U
2 has a structure in which the edge of the U-shaped slot 1 is pressed into contact with the electric wire conductor 5 for conducting connection, and the press contact blade 2 is shown in FIGS. 2 (B) and 2 (C).
And cut out a part of the bottom plate 6 of the terminal to raise it,
The bottom plate 6 is bent 90 ° with respect to a plate material.

The upper end of the plate of the press contact blade 2 is formed as a flange portion 3 so as to protrude outward, and the lower end of the flange portion 3 is formed with a holding portion 11 orthogonal to the vertical center line 8 of the U-shaped slot 1. In addition, the holding portion 11 is overlapped on the upper end 10 of the terminal side wall 9 and the flange portion 3 is inserted into the pocket 15 of the terminal side wall 9 to stabilize the standing posture.

[Problem to be Solved by the Invention] Although the above-described press contact blade 2 receives a large press-fit when the electric wire 4 is press-fitted, it has a rigid structure in which downward displacement is restrained by engagement of the flange portion 3 and the terminal side wall 9. In the case of a large-diameter electric wire or a stranded wire conductor having a large press-in resistance, the large press-in resistance directly appears between the wire conductor 5 and the press-connecting blade 2 because of the standing posture. As shown in FIG. 6D, the wire arrangement of the conductor 5 may be broken, or the twisted wire may be broken (unraveled), resulting in a defective wire 7 and the pressure welding may become unstable.

The present invention provides a press contact terminal that solves the above-mentioned drawbacks of the conventional means.

[Means for Solving the Problems] The press contact terminal of the present invention for solving the above technical problem has a U-shaped slot with an upper opening provided on an upright plate which is cut out of a part of the terminal bottom and raised. In a pressure contact terminal having a pressure contact blade, both outer edges of the upper end of the pressure contact blade are formed as “outwardly projecting flange portions in which a lower edge forms an upwardly expanding tapered edge”, and a lower end of the tapered edge and an upper end of a terminal side wall are formed. Engaging configuration, and further,
A flexible clearance is provided between both edges of the terminal side wall and the press contact blade, and a bottom of the U-shaped slot is located below a lower end of the terminal side wall, and an electric wire is inserted and pressed into the U-shaped slot. , The U-shaped slot is formed into a flexible pressure contact blade having a bulge at the tip and presenting an enormous groove shape in the middle in the vertical direction.

[Operation] In the press contact terminal of the present invention having the above configuration, the lower edge of the flange portion at the upper end of the press contact blade formed by cutting out a part of the terminal plate material forms a tapered edge that expands upward, and the lower end portion of the tapered edge is Since it engages with the upper end of the terminal side wall and has bending clearances on the left and right sides of the press-contact blade, the press-contact blade in the standing position, in which the terminal bottom surface and the joint bending portion are the lower end as the free end, is displaced downward and left and right. A flexible structure of a possible plate-like elastic beam is obtained.

Therefore, when the U-shaped slot receives a pushing force due to a large wire pressure input, the press-contact blade buckles at the joint bending portion at the lower end and makes a downward displacement, and the tapered edge engages with the terminal side wall in conjunction with the downward action. In combination, the U-shaped slot deforms into a "middle groove with the tip recessed," so that a part of the wire pressure input is absorbed by the deformation and the wire conductor and the U-shaped slot are pressed excessively. The wire conductor is smoothly accommodated in the U-shaped slot, which has been relaxed and has the shape of an intermediate bulge, without distorting the wire posture, and receives the elastic reaction force of the U-shaped slot accompanying the deformation. It has the effect of being pressed in a stable state.

"Example" Hereinafter, a detailed description will be given based on an example. With reference to FIG. 1 showing one embodiment of the present invention, the press-contact blade 2 shown in FIG.
In the same manner as in the above, a part of the terminal bottom plate 6 is cut out to make a substantially vertically raised plate material, and in the press contact terminal having the press contact blade 2 composed of the U-shaped slot 1 having the upper opening, the left and right of the upper end portion of the press contact blade 2 Both edges become flange portions 3 projecting left and right, and the lower edge of the flange portion 3 is a tapered edge that expands upward.
The lower end 13 of the tapered edge 12 (the starting point of the taper) is engaged with the upper end 10 of the terminal side wall 9 in a "contacting or extremely close" state, and the bottom of the U-shaped slot 1 is connected to the terminal. The pressure contact blade 2 is located slightly below the lower end of the side wall 9, and further has a flexible clear lance 14 between itself and the terminal side wall 9, and is formed in a flexible structure that can be deformed downward and left and right. 2A, the flange portion 3 is inserted into a pocket 15 formed in the side wall 9 of the terminal, and the pressing blade 2 is set upright so that it does not fall. Regulated.

The press-connecting blade 2 having the above-described configuration is configured such that when a large-diameter electric wire or an electric wire requiring a large press-fit of a stranded conductor is press-fitted into the U-shaped slot 1, the press-fit is applied to the U-shaped slot 1 and As shown in FIG. 1 (C), the bent portion 7 of the terminal bottom plate 6 corresponding to the lower end of the press-contact blade 2 buckles as shown by the solid line in FIG. . Then, as shown in FIG. 1 (B), the tapered edge 12 cuts into the terminal side wall 9 along with the downward displacement, and the U-shaped slot 1 is deformed into a shape of “middle bulge by tapering forward”. The wire conductor 5 is smoothly accommodated in the bulging portion.
The press-fitted electric wire conductor 5 absorbs the press-fit into the deformation of the press-contact blade 2, so that excessive press-contact with the U-shaped slot 1 is alleviated, and the twisting and arrangement of the conductor strands are prevented from being reduced. At the same time, the conductor 5 in the U-shaped slot 1 can maintain a stable press-contact state with the edge of the U-shaped slot 1 by receiving the elastic reaction force of the bulging displacement.

"Effects of the invention" As described above, the press contact terminal of the present invention prevents the collapse of conductor strands and secures a stable pressure contact state even for large diameter wires or stranded conductors with large press-in force. This has the effect of stably improving the electrical performance of the press contact terminal.

[Brief description of the drawings]

FIG. 1 shows a press contact terminal of one embodiment of the present invention, (A) is a front view of the press contact blade, (B) is a front view of an operation state of the press contact blade, and (C) is a side view of the press contact blade. FIG. 2 shows a conventional press contact terminal, (A) is a perspective view, (B) is a front view of the press contact blade, (C) is a side view of the press contact blade, and (D) is a side view of the press contact blade. Front view of the used state Main symbols, 1: U-shaped slot, 2: Pressure welding blade, 3: Flange, 4: Wire, 5: Conductor, 6: Terminal bottom plate, 9: Terminal side wall, 10: Upper end of terminal side wall , 12: tapered edge, 14: flex clearance

Claims (1)

(57) [Scope of request for utility model registration] 1. A press contact terminal having a press contact blade provided with a U-shaped slot having an upper opening in an upright plate body cut out and raised by cutting a part of the terminal bottom portion. The lower edge forms an outwardly protruding flange portion that forms an upwardly expanding tapered edge, and the lower edge of the tapered edge is engaged with the upper edge of the terminal side wall. A flexure clearance is provided, and the bottom of the U-shaped slot is located below the lower end of the terminal side wall, and in a state where an electric wire is inserted and pressed against the U-shaped slot, the U-shaped slot has a concave end. A press-connecting terminal characterized in that the press-connecting terminal is configured as a flexible press-connecting blade having an intermediately large groove shape in the vertical direction.