JPH03112086A - U-slit connecting tool - Google Patents

Abstract

PURPOSE:To miniaturize a tool and a terminal base by forming edge sections covering the other member on both sides of one member of a cutting edge and a tool main body. CONSTITUTION:The tip 3a of a cutting edge 3 is formed into a one-side edge, and the cutting edge 3 and a tool main body 2 are integrated while side faces 3a and 2c are butted. A support piece 2a on the cutting edge 3 side of the tool main body 2 is made thin to the extent possible, and the deficient strength of the support piece 2a reduced by thinning is reinforced by the cutting edge 3 or reinforced by itself. The width and thickness of receiving faces hit by the support piece 2a of a terminal base 8 and the tip 3a of the cutting edge 3 may be those corresponding to the thin support piece 2a, thus the terminal base 8 as well as the tool main body 2 can be miniaturized.

Description

[Detailed description of the invention] B. Industrial application fields The present invention relates to a U-slit connection tool.

BACKGROUND OF THE INVENTION As shown in the front and bottom views of the main parts in FIGS. 8 and 9, a conventional wire connection tool of this type has a cutting edge a' at the tip and a handle (not shown). With respect to the fixed cutting blade a, the tool body formed by opposing the pair of left and right support pieces d and d' of the tip groove C with wire pushing pieces e and e' is slidable in the vertical direction. It is known that these are combined with a spring (not shown) to apply a return force toward the tip (downward).

C0 Problems to be Solved by the Invention This type of wiring tool has a wire socket f′ of a U-slit terminal f.
After exposing the covered wire g, insert the pushing pieces e and e' with handles (not shown) into the grooves h' and h'' of the terminal block, and push down the handles to release the pair of supports. piece d, d
Push down the insulated wire g with the lower end surfaces of the support pieces e and e, push it into the wire holding part f'' of the U-slit terminal f using the push pieces e and e, and at the same time push the lower end surface of the support piece d onto the terminal block. By hitting the receiving surface h'' of the handle, the tool body is pushed up against the restoring force of the spring due to the downward force of the handle, and as a result, the cutting blade a is pushed down, and the cutting edge a' Remaining end g' of covered wire g
is cut off, and in an attempt to connect the covered wire g to the U-slit terminal f in this way, the remaining end g' of the covered wire g is made as long as possible, that is, as close as possible to the U-slit terminal f side, and the covered wire g is cut off. It is desirable to cut g,
For this purpose, it is necessary to make the thickness of the support piece d as thin as possible.

By doing so, the width and thickness of the receiving surface h'' of the terminal block can be reduced, contributing to miniaturization of the entire terminal block.

However, with this type of tool, the remaining end g′ of the covered wire g
In order to cut off the support piece d on the cutting blade a side, it is necessary to strongly press it against the receiving surface h''' of the terminal block against the spring force, so the wall thickness j of the support piece d is not strong enough. It cannot be made thinner.

Moreover, since the above-mentioned conventional wire connection tool has a structure in which only the side surface a'' of the cutting blade a and the side surface b' of the tool body are attached, the support piece d on the side of the cutting blade a is not strong enough. It is also necessary to form it thickly.

Due to these circumstances, the width and wall thickness of the support piece d of the terminal block and the receiving surface h'', which the cutting edge a of the cutting blade a comes into contact with, must also be appropriate, which poses an obstacle to downsizing the terminal block. There were problems such as.

The present invention has been made in view of the above-mentioned problems of the conventional technology, and includes edges that cover the other member on both sides of either the cutting blade or the support piece on the cutting blade side. By reinforcing the support piece with the cutting blade or reinforcing the support piece itself, the receiving surface of the support piece and the terminal block can be made thin, contributing to miniaturization of tools and terminal blocks. The purpose is to provide a U-slit connection tool.

2. Means for solving the above-mentioned problems In order to achieve the above-mentioned objects, the U-slit wiring tool of the present invention has a cutting edge formed at the tip and a cutting edge fixed to the handle body, and A tool body formed by a pair of supporting pieces and a wire pushing piece, which are assembled so that they can freely slide in the vertical direction and are biased with a return force in the distal direction by a spring. The present invention is characterized in that edges covering the other member are formed on both sides of either the cutting blade or the tool body.

After placing the covered wire in a substantially horizontal state facing the wire receptacle of the U-slit terminal that opens in the groove formed between each protrusion of the terminal block, grasp the handle and firmly press the terminal block. Each pushing piece is inserted into the groove opening on both sides of the U-slit terminal, the pushing pieces and the tip end surfaces of the pair of supporting pieces are pressed onto the coated wire, and the handle is pushed down.

In this way, the covered wire is forcibly pushed into the wire clamping part of the U-slit terminal by both pushing pieces, and is held in the wire clamping part, but at this time, one of the pair of support pieces is cut by being pushed down by the handle. The support piece on the blade side contacts and is pressed against the receiving surface of the terminal block, so the tool body resists the return force and is pushed up while compressing the spring. As a result, the cutting blade descends and The cutting edge cuts off the remaining end of the covered wire that extends outward from the terminal block groove, and
Finish the work of connecting the covered wire to the slit terminal.

In this way, when the handle is released after connecting the covered wire, the tool body is pushed down and returned to its original position by the return force of the spring, and the tip of the support piece moves below the tip of the cutting blade. It is stopped and held in a state where it protrudes by the required length.

Second Embodiment Hereinafter, embodiments of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 to 5, the U-slit connection tool of the present invention is comprised of a complement 1, a tool body 2, a cutting blade 3, a spring 4, and a holder 5 as main components.

The complement 1 is divided into two parts 1a and 1 in the longitudinal direction.
b are butted against each other and are integrally formed by tightening screws 6 or the like.

The tool main body 2 has a groove 7 formed in a substantially inverted U-shape in the front at the center of the tip, so that a pair of support pieces 2a and 2b on the left and right sides are integrally formed and have the same length in the vertical direction. has been done.

Pushing pieces 2c and 2d for pushing in electric wires are provided on opposite surfaces of the supporting pieces 2a and 2b.

As shown in FIGS. 5 to 7, each protrusion 9.
When used for a terminal block 8 with different widths of the grooves 12.13 formed before and after the U-slit terminal 11 buried in the insulating block 10, the pushing pieces 2c and 2d are inserted between the push pieces 2c and 2d. The lengths m and m' in the left and right direction are the lengths m and m' of the groove 1
2. Form it to a width of 13 mm, equal to or slightly shorter than Ni'.

Further, the width of the push-in pieces 2c and 2d in the front-rear direction is set to such an extent that they can be inserted into the grooves 12 and 13 of the terminal block 8.

Furthermore, a recess 15 is provided at the tips of the pair of support pieces 2a and 2b for positioning the covered wire 14 at the center of the lower ends of the push pieces 2c and 2d.

The cutting blade 3 has a single-edged cutting edge 3a at its tip, and the cutting blade 3 and the tool body 2 have side surfaces 3b,
2e are put together in a butted state. The support piece 2a on the side of the cutting blade 3 of the tool body 2 is formed to be as thin as possible, and the cutting blade 3 reinforces the lack of strength of the support piece 2a, which is reduced by making the thickness thinner. or reinforced by itself.

That is, as shown in FIGS. 1 and 3A, edges 16.16 are integrally provided on both sides of the cutting blade 3 in the front and rear directions to cover both the front and rear sides of the support piece 2a. The cutting blade 3 strengthened by this is formed so as to reinforce the support piece 2a, or as shown in the opening of FIG. Edges 16.16 covering both the front and rear sides are integrally protruded, and the support piece 2a itself may be reinforced by this.

Thus, the tool body 2 and the cutting blade 3 are arranged so that the outer surface 2e of one support piece 2a of the tool body 2 is attached to the side surface 3b of the cutting blade 3.
By butting them together, both sides of the other member are covered by the edges 16.16. In this state, the cutting blade 3 is inserted into the holder 5 which is screwed inside the tip of the complement 1 with the screw 17. Tighten with.

On the other hand, the tool body 2 has its base 2f inserted into the through hole 5a of the holder 5 so as to be slidable in the vertical direction, and its base end and both ends supported by the bottom of the recessed hole 1c of the complement 1. A compression spring 4 installed in the recessed hole IC applies a return force to the tool body 2 in the distal direction, that is, downward in FIG. 1, and in opposition to this return force, the tool body 2 The tightening screw 6 of the complement 1 is tightened with the tool so that the tips of the support pieces 2a and 2b are stopped and held in a state where they are slightly protruding downward from the cutting edge 3a of the cutting blade 3 during normal operation (when not in use). Main body 2
It is slidably inserted into an elongated hole 2g extending in the vertical direction and supported by the holder 5.

In addition, as is known, the U-slit terminal 11 has a wire socket 11a and a wire holding portion 11b arranged vertically at the upper end thereof, as shown in FIG. 5 and FIG.
The wire socket 11a has a width that can receive the covered wire 14,
The wire clamping portions 11b are each formed to have a width that allows the wire clamping portions 11b to forcibly clamp the covered wire 14.

Of course, those U-slit terminals 11 are wire sockets 11a,
The wire holding part 11b is embedded in the insulating block 10 so as to correspond to the groove part 12.13 of the terminal block 8 and to be on the same straight line.

In addition, in FIGS. 1 and 4, 1d indicates the collar of complement 1.

Effects of the Invention Since the present invention is configured as described above, the insulated wire 14 is held in the wire holding portion 11b of the U-slit terminal 11 and the groove portion 12, 13 of the terminal block 8 by the pushing pieces 2c and 2d.
While holding the complement 1 with the support piece 2a on the cutting blade 3 side in contact with the terminal block 8, push it down against the return force of the spring 4, and cover it with the cutting blade 3. When cutting the remaining end of the electric wire 14, a large force is applied to the support piece 2a on the cutting blade 3 side. or edge 1 covering both sides of the cutting blade 3
Since sufficient strength can be developed by reinforcing the support piece 2a itself on which 6.16 is formed, the support piece 2a portion can be made considerably thin,
Therefore, the support piece 2a of the terminal block 8, the cutting edge 3 of the cutting blade 3
The width, wall thickness, etc. of the receiving surface that a touches on may be any suitable as long as it corresponds to the thinness of the support piece 2a, which contributes to miniaturization of not only the tool but also the terminal block 8.

In addition, the structure is extremely simple, with only edge portions 16 and 16 provided on both sides of the cutting blade 3 or the support piece 2a of the tool body 2, so it is easy to manufacture and can be provided at low cost. .

[Brief explanation of drawings]

Fig. 1 is a partially sectional front view showing an embodiment of the U-slit connection tool according to the present invention, Fig. 2 is an enlarged bottom view of the main parts of the same embodiment, and Fig. 3 In the figure II
Each cross-sectional view showing each embodiment of the support piece and cutting blade cut along line I-III and viewed from the direction of the arrow. FIG. 4 is a partially cutaway view of the same embodiment with the complement pushed down. Figure 5 is a front view of the main part showing the state of use of the same embodiment with a partial cross section. 7 is a perspective view illustrating a terminal block, and FIGS. 8 and 9 show main parts of a conventional U-slit wiring tool. They are a front view and a bottom view. Main symbols in the figure, handle body, tool body 2a, 2c, 3, 3a, 4, 5, 7, 16. 2b... Support piece 2d... Push piece, cutting blade, blade tip, spring, holder, groove part 16... Edge part

Claims (1)

[Scope of Claims] For the cutting blade 3 which has a cutting edge 3a at its tip and is fixed to the handle 1, a pair of left and right support pieces 2a of the tip groove 7,
A tool body 2 formed by opposing wire pushing pieces 2c and 2d on a tool body 2b is assembled in a state in which it is vertically slidable and a return force is applied in the distal direction by a spring 4, as described above. A U-slit wiring tool characterized in that edges 16, 16 are formed on both sides of either the cutting blade or the tool body to cover the other member.