JPS5817334Y2 - Taishin Densen Setsuzokusouchi - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a vibration-resistant electric wire connection device for electrical wiring installed in cranes, special vehicles, and other mechanical devices that are subject to excessive vibration.

In recent years, mechanical devices have become faster and more sophisticated, and as a result, there is a tendency for electrical wiring to become more complex and diverse.

These are accompanied by various problems due to vibration, but among them, the problem caused by disconnection at the connection part of the electric wire is particularly noticeable.

The purpose of the present invention is to provide a vibration-resistant electrical wire connection device that completely eliminates such adverse effects.

Figures 1 and 2 show conventional general connection terminals, A and B.
is an electric wire to be connected, which is connected to a conductor 2 with a bolt 6 through a compression connection terminal 5, and is fixed to a structure on a stand 1, and is connected from electric wire A to electric wire B via conductor 2, or from electric wire B to electric wire B via conductor 2. Electric wire A is energized.

In this case, the following problems occur where excessive vibration is involved.

That is, the electric wires A and B are repeatedly bent in the direction shown by arrow C in FIG.

This repeated bending causes the insulation coatings of the wires A and B to peel off, and the wires are concentrated at the 0 point of the strength Togane, causing the wires to break due to repeated fatigue.

Figures 3 and 4 are intended to eliminate this problem.
Its structure is such that an auxiliary conductor 3 whose lower part is in contact with a conductor 2 is bent in the middle, a connecting terminal 5 is superimposed on the upper part sandwiching an insulating and elastic protective plate 4, and these are connected with bolts 6. A vibration-resistant electric wire connecting device characterized in that the electric wire is bent and passed through holes 7, 7 formed in the vicinity of the protective plate 4, and its tip is connected to the connecting terminal 5. be.

The present invention is constructed as described above, in which A and B are electric wires to be connected, and the auxiliary conductor 3 is formed into a U-shape by compressing or otherwise fixing the connecting terminal 5 to the tip thereof, and the elastic protective plate 4 and fixed to the conductor 2 with bolts 6, and the vibration-resistant wire connection device of the present invention is fixed to the structure using the stand 1 provided on the conductor 2.

Thus, current is passed from wire A to wire B or from wire B to wire A through connection terminal 5 - auxiliary conductor 3 - conductor 2 auxiliary conductor 3 -
This is the type of connection terminal 5.

Further, both the stand 1 and the protection plate 4 are made of insulating material to prevent electrical interference between the ground and adjacent electric wires.

The protection plate 4 of the present invention is insulating and elastic as described above, and has a plurality of holes 7L7, 7 adjacent to each other as shown in the figure, and the electric wires A, B are bent into the holes 7, 7. It has a penetrating grip.

Since the present invention is constructed as described above, the electric wires A and B are bent and penetrated into the holes 7 and 7, so that the electric wires A and B are securely held by the protection plate 4, and even if there is vibration, the electric wires A and B are Connection of the electric wires A and B can be ensured without fear of separation.

This means that, as shown in the right half of FIG. 4, the electric wire A is subjected to repeated bending loads as shown by the arrow C due to vibrations and tends to bend, but due to the elasticity of the protection plate 4, the bent state is bent and the wire A is bent. It is possible to completely eliminate repeated bending concentrated at the zero point as shown in Figure 2, and it is possible to completely eliminate wire breakage due to fatigue caused by vibration, thereby maintaining the durability of the wire connection. effective.

In particular, the reason why the auxiliary conductor 3, which is bent in the middle and formed into a U-shape as shown in FIGS. 3 and 4, is provided is because the protective plate 4 is an elastic insulator as described above. conductor 3
If not, the connecting terminal 5 and the conductor 2 will be fixed through the insulator of the protective plate 4, and the current will have to be supplied only through the fixing bolt 6, which will prevent problems in terms of electrical characteristics and , the repeated bending of the protective plate 4 due to vibrations is directly transmitted to the fixing bolt 6, causing the fixing bolt 6 to loosen, and since the protective plate 4 has elasticity, the fixing bolt 6 may not be completely tightened. The interposition of the auxiliary conductor 3 has the effect of preventing the connection terminal 5 and the conductor 2 from overheating and causing burnout of the electric wire A or the electric wire B due to poor contact due to poor adhesion.

・It should be noted that the shape of the protection plate 4 shown in FIGS. 3- and 4, that is, the distance L1 of the perforation 7. L2, hole diameter φ, width W and thickness t
is selected appropriately depending on the magnitude of vibration of the electric wire.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a conventional general electric wire connecting device for connecting electric wires, Fig. 2 is a longitudinal cross-sectional side view of a part of the same, Fig. 3 is a plan view showing an embodiment of the present invention, Fig. 4 is a partially vertical side view of the same as above. 1 is a stand, 2 is a conductor, 3 is an auxiliary conductor, 4 is a protection plate, 5 is a connection terminal, 6 is a bolt, 7 is a hole, A and B are electric wires.

Claims (1)

[Scope of utility model registration request] The auxiliary conductor, whose lower part is in contact with the conductor, is bent in the middle, and a connecting terminal is superimposed on the upper part sandwiching an insulating and elastic protective plate, and these are connected with bolts, and then connected to the protective plate. A vibration-resistant electric wire connection device characterized in that an electric wire is bent and passed through a plurality of holes drilled in close proximity, and the tip thereof is connected to a connection terminal.