JPS5919630Y2 - Trolley wire connection structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connection structure for a trolley wire used for power supply or signal transmission to a transport carrier or the like that runs on rails.

FIGS. 1 and 2 show a conventional trolley wire connection structure.

In FIG. 1, the trolley wire 1 has a shape in which two hollow round wire portions 2 and a web 3 are integrally formed, and at the trolley wire connection portion, one of the trolley wires has a pointed tip in the hollow. The base of the pin 4 is inserted and fixed, and the tip of the pin 4 is press-fitted into the hollow of the other trolley wire to connect the two trolley wires.

In this connection structure, the electrical contact of the trolley wire connection part is maintained by the elastic force of the hollow round wire part 2 due to the press-fitting of the pin 4, so the contact force decreases due to wear due to the insertion and removal of the pin 4, and the electrical contact There is a drawback that contact is incomplete.

The connection structure shown in FIG. 2 is such that a pair of connecting fittings 6, 6 that hold both sides of the trolley wire are tightened and fixed together with bolts 7 at the connection portion of the trolley wire 5 having a ■-shaped cross section. .

This connection structure has the disadvantage that bolt tightening work is extremely difficult because the trolley wire is generally installed close to the carrier rail, etc., and that connection requires space because the connecting fitting 6 protrudes from the trolley wire. .

The purpose of the present invention is to propose a connection structure for a trolley wire that eliminates the above-mentioned conventional drawbacks.

An illustrated embodiment of the present invention will be described below.

As shown in FIGS. 3 and 4, the trolley wire 8 of the present invention has a longitudinal opening 9 in the center of one side of the hollow wire having a substantially square cross section and a locking portion 10 projecting on both sides of the opening 9. In addition, the outer surface on the side opposite to the opening 9 is recessed into a mountain shape to serve as a collector sliding contact surface 11, and protrusions 12 for holding the trolley wire 8 on an insulating material are integrally formed on both sides thereof. It has a shape.

At the connecting part of the trolley wire 8, a connecting fitting 13 with a square cross section whose both sides are in contact with the inner surface of the hollow and the upper surface is locked with the locking part 10 is inserted into the hollow of the trolley wire, and is screwed into the connecting fitting 13. The inserted screw 14 is tightened and its tip is brought into contact with the back side of the collector sliding contact surface 11, and the connecting fitting 13 is brought into pressure contact with each of the locking portions 10 of both the trolley wires 8, 8 to be connected.

The peripheral wall of the hollow portion of the trolley wire 8 has a thickness sufficient to withstand deformation due to tightening of the screw 14, but the pressure applied to the back surface of the collector sliding surface 11 due to the tightening of the screw 14 causes the left and right locking portions 10 to move inside. Because it acts to bend it in the direction,
The connecting fittings 13 are reliably held by the locking portions 10 and firmly press-contacted to the trolley wires 8, 8, so that both trolley wires can be electrically matched and connected with sufficient contact pressure.

A power supply or signal wire can also be connected to the connection fitting 13 using a nut screwed into the screw 14.

The present invention has the above-mentioned structure, and has the advantage that the trolley wire connection portion can be easily connected electrically and mechanically, and the connecting fittings are also easy to manufacture.

[Brief explanation of drawings]

Figures 1 and 2 are perspective views and cross-sectional views showing different conventional trolley wire connection structures, respectively. Figure 3 is a perspective view of an embodiment of the present invention. Figure 4 is taken along the line A-A in Figure 3. It is an enlarged cross-sectional view. 8... Hollow trolley wire, 9... Opening, 10... Locking part, 13... Connection fitting, 14... Screw .

Claims (1)

[Scope of utility model registration request] One side of the hollow trolley wire is formed with a longitudinal opening and a locking part protruding from both sides of the opening, and a screw is screwed through the opening into a connecting fitting inserted into the hollow spanning the trolley wire connection part. A connecting structure for a trolley wire, characterized in that the screw tip is brought into contact with the hollow inner surface and the connecting fitting is brought into pressure contact with the locking part.