JPS6350173Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of an insulated contact wire.

Insulated contact wires are normally used by being suspended from a cross arm on the side of a factory building using a hanger. The current collector shoe of the vehicle then comes into contact with the contact wire at the opening of the insulating cover, and the vehicle moves while maintaining this contact.

Conventional insulating trolleys are held by hangers only at the upper ends of both sides of the insulating cover.
It is supported by two points.

By the way, a spring member is incorporated in the current collector shoe so that the contact between the shoe and the contact wire can be maintained even if the insulated contact wire vibrates, but the vibration of the insulated contact wire (oscillation vibration) In severe cases,
The contact becomes unstable, causing problems such as generation of sparks.

However, as mentioned above, the conventional insulated contact wire is supported at two points, and each fulcrum has a structure in which the protrusion at the tip of the hanger is fitted into the groove of the insulating cover.
It is hard to call it a fixed fulcrum, but more like a rotating fulcrum. Therefore, the insulated contact wire is likely to vibrate, and the vibration is particularly large when the insulated contact wire is fixed in a horizontal direction.

The insulated contact wire according to the present invention was devised in view of the above points, and features locking grooves provided on both sides of the insulated cover into which the contact wire is attached and on the top surface of the insulated cover. This is a characteristic configuration.

The present invention will be explained below with reference to the drawings.

FIG. 1 shows an insulated contact wire according to the present invention.

In FIG. 1, 1 is a contact wire and 2 is an insulating cover, which is made of vinyl chloride, for example.

Numerals 21 and 22 are locking grooves provided at the upper ends of both sides of the insulating cover 2, and 23 is a locking groove provided on the top surface of the insulating cover 2.

FIG. 2 shows the supported state of the insulated contact wire according to the present invention, in which the lower ends 31 and 32 of both sides of the insulating member 3 of the hanger are in the locking grooves 21 and 22 on both sides of the contact wire insulating cover 2. , the lower ends 33 of the intermediate pieces are fitted into the locking grooves 23 on the upper surface of the contact wire insulating cover 2, respectively. Since the insulated contact wire is supported at three points, even though each fulcrum itself is in surface contact and can be rotated, in other words, even though it is a rotating fulcrum, The insulated trolley can be supported stably enough so as not to cause oscillation vibration.

As mentioned above, the insulated contact wire according to the present invention has a structure in which locking grooves are provided not only at the upper ends of both sides of the insulating cover but also on the upper surface of the insulating cover, so that the support by the hanger can be made into a three-point support. , it is possible to provide an insulated contact wire that can be fixed while well preventing swinging vibration.

[Brief explanation of the drawing]

FIG. 1 is a perspective explanatory view showing an insulated contact wire according to the present invention, and FIG. 2 is an explanatory view showing a supported state of the insulated contact wire according to the present invention. In the figure, 1 is a contact wire, 2 is an insulating cover,
21, 22 and 23 are locking grooves.

Claims (1)

[Scope of utility model registration request] An insulated contact wire characterized in that locking grooves are provided on both sides of an insulated cover into which the contact wire is attached and on the top surface of the insulated cover.