JPH05159822A - Bus bar for crossover wiring between appliance terminal - Google Patents

Abstract

PURPOSE:To perform excellent crossover wiring between appliance terminals by excluding interference between bus bars. CONSTITUTION:There are provided a U-shape barrel part 43 comprising a conductive plate 42, a terminal connection part 44 formed on a tip thereof, and an insulating coating film 45 for covering the barrel part 43. A terminal screw hole 46 is formed in the terminal connection part 44. Width V1 of the barrel part 43 is smaller than width V2 of the terminal connection part 44 at the tip and total lateral width W1 of the barrel part 43 is smaller than an interval W2 between the terminal screw holes 46 formed on both tips.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bus bar for wiring between instrument terminals of an instrumentation board or a control board relay sequence board in an instrumentation facility, a control device or the like.

[0002]

2. Description of the Related Art FIG. 2 is a plan view showing the actual state of conventional wiring. The wiring of a relay body or a terminal block 1 is obtained by attaching a terminal connecting portion 3 to an electric wire 2 by crimping.
Is connected to the relay body or the instrument terminal 4 of the terminal block 1. The crossover wiring is performed by connecting two terminal connection portions 3 to the appliance terminal 4.

[0003]

However, such conventional wiring has the following drawbacks. (1) There are many man-hours for making wiring materials.

(2) The reliability of the contact conducting portion due to the crimp attachment of the electric wire 2 and the terminal connecting portion 3 is reduced.

From such a conventional technique, a busbar 11 for crossover wiring as shown in FIG. 3 can be easily conceived.
FIG. 4 shows a cross section taken along line AA of FIG.
Is a conductive plate and 13 is an insulating coating. However, when the transit wiring bus bar 11 shown in FIGS. 3 and 4 is attached to the instrument terminal 4 as shown in FIG. 5, the cut surface at BB in FIG. 5 is double-attached as shown in FIG. The bus bar 11 and the bus bar 11 interfere with each other at a location. For this reason, there are drawbacks in that it is difficult to attach two wires, or even if it is forcibly tightened by the terminal screw 14, it cannot be completely tightened and loosens later, resulting in poor connection.

This drawback is that, as shown in FIG. 7 and FIG. 8, the tip portion 23 is appropriately positioned with respect to the surface of the body portion 22 at a position P which is separated from the tip end of the bus bar 21 by an appropriate length toward the body portion 22. A three-dimensional shape bent by an angle θ, or, as shown in FIGS. 9 and 10, the position P of the bus bar 31 described above.
Also, the bus bar is formed in one of three-dimensional shapes in which the tip portion 33 and the body portion 32 are parallel to each other with a step H by being bent at an appropriate angle at two positions Q near the body portion 32. It will be solved.

However, in order to form a three-dimensional shape like the above-mentioned two points, in the production of the conductive plate, one place or two places
A bending process of the part is necessary.

The present invention has been made in order to solve the drawbacks of such a crossover wiring. It is possible to eliminate the interference between the busbars and the busbars and perform the crossover wiring between the instrument terminals in good condition. The purpose is to provide a bus bar for.

[0009]

That is, in the bus bar for wiring between instrument terminals of the present invention, terminal screw holes are provided at both ends of a terminal connecting strip made of a conductive material, and the body except for the tip is formed. A bus bar for device terminal crossover wiring, in which the portion is formed in a U-shaped or U-shaped strip plate shape and covered with an insulating film, and the body has a narrower width than the tip and the terminal at the tip. It is characterized in that it is formed in a region inside the center point of the screw hole.

[0010]

In the bus bar for wiring wiring between appliance terminals of the present invention, even if wiring is carried out between appliance terminals, it is possible to avoid contact between the bus bar and the body of the bus bar, prevent interference between the bus bars, and establish connection continuity. Good crossover wiring is possible.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of a bus bar 41 for wiring between appliance terminals of the present invention, and FIG. 2 is a cross-sectional view of the bus bar 41 showing a cross section taken along the line CC in FIG. As shown in these figures, the bus bar 41 is composed of a U-shaped body 43 made of a conductive plate 42, a terminal connecting portion 44 formed at the tip, and an insulating coating 45 covered by the body 43. A terminal screw hole 46 is formed in the terminal connection portion 44. The width V ₁ of the body portion 43 is smaller than the width V ₂ of the terminal connecting portion 44 at the tip, and the lateral width W _{1 of the} entire body portion 43 is the distance between the terminal screw holes 46 formed at the both tips. The shape is smaller than W ₂ .

By using such a bus bar 41, as shown in FIG. 3, even if the terminal connecting portion 44 of the bus bar 41 is doubly attached to one instrument terminal 4, the body portions of the bus bars 41 of each other are connected. 43 do not overlap, both bus bars 4
Since there is a gap D between the two terminals and there is no interference, the crossover wiring between the appliance terminals 4 is favorably performed.

Therefore, according to the bus bar for wiring between appliance terminals of the present invention, the following effects can be obtained.

(1) The process of making a wiring material, which has been performed in the conventional bridging wiring, is unnecessary, and the wiring connection is simplified, so that the number of manufacturing steps can be greatly reduced. (2) The reliability of contact conduction is significantly improved by eliminating the crimping and mounting of electric wires.

(3) By making the width of the body portion of the bus bar smaller than the width of the terminal connecting portion at the tip, it becomes easy to attach two wires, and the tightening by the terminal screw is also completed.
The problem of loosening and poor connection later disappears.

[0016]

As described above, according to the bus bar for wiring between device terminals of the present invention, the wiring between the device terminals can be easily performed and the connection with the device terminals can be performed stably and firmly. The reliability of the crossover wiring between the appliance terminals can be improved.

[Brief description of drawings]

FIG. 1 is a plan view showing a bus bar for wiring between appliance terminals according to an embodiment of the present invention.

FIG. 2 is a C-C of a bus bar for wiring between device terminals in FIG.
FIG.

FIG. 3 is a plan view showing a mounted state of the bus bar of FIG.

FIG. 4 is a diagram for explaining an example of wiring between terminals using a conventional electric wire.

FIG. 5 is a plan view of a bus bar easily conceivable from the prior art.

6 is a cross-sectional view of the bus bar of FIG. 5, taken along the line AA.

FIG. 7 is a plan view showing a mounted state of the bus bar of FIG.

8 is a cross-sectional view taken along the line BB of FIG.

FIG. 9 is a plan view of another bus bar easily conceivable from the prior art.

FIG. 10 is a mounting cross-sectional view of the bus bar of FIG.

FIG. 11 is a plan view of still another bus bar easily conceivable from the prior art.

12 is a mounting cross-sectional view of the bus bar of FIG.

[Explanation of symbols]

 4 ... Instrument terminal 41 .. Bus bar for wiring between instrument terminals 42 ..... Conductive plate 43 ..... Body 44 ..

Claims (1)

[Claims] 1. Terminal screw holes are provided at both end portions of a terminal connecting strip made of a conductive material, and the body portion excluding the end portions is in the shape of a U-shaped U-shaped strip. A bus bar for wiring between device terminals, which is formed and covered with an insulating film, wherein the body is narrower in width than the tip and is formed in a region inside the center of the terminal screw hole at the tip. A bus bar for wiring between appliance terminals.