JPH0270692A - Hook - Google Patents

Abstract

PURPOSE:To inhibit a hook from springing out being dislocated from a mooring part of a towing or towed object by providing a receiving stopper part on a direction of the hook in its tractive force in the internal peripheral edge root part side of a hook part. CONSTITUTION:A receiving stopper part 3, receiving and stopping the hook stopped part of a towing or towed object provided in the internal periphery of a hook part 1, is provided on a direction l of a hook in its tractive force. Accordingly, a rope or the like is broken, when the hook springs out along the direction l of the tractive force in an opposite direction to a breaking point, a mooring part of the towing or towed object collides against this receiving stopper part 3. In this way, the hook, being stopped in this flying, is prevented from springing out being dislocated from the mooring part of the towing or towed object.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a hook used for relaying between a towed object or an object to be towed and a rope when a heavy object is towed by a rope or the like.

For example, a conventional hook has a shape as shown in Fig. 1,
The outline of the inner peripheral edge of the hook is almost U-shaped, or U-shaped with a slightly narrowed tip. With such a hook, if the rope breaks during towing, the hook will easily detach from the towed object or towed object due to the reaction of the traction force, and the hook will be forced outward, that is, toward the towed object or towed object. There was a danger that the vehicle could easily fly out and damage the towed object, the towed object, or nearby property.

Some conventional hooks are equipped with a stopper such as a bottle at the opening of the hook to prevent them from coming off easily, but the momentum of the hook is extremely large when the rope breaks during towing. Such stopper means are easily destroyed and are of little use in preventing the hook from popping out.

Furthermore, if the stopper means is made too strong, the hook will become larger than necessary, and it will be difficult to use the hook for unhooking.

The present invention provides a hook that overcomes these drawbacks.

In the present invention, this problem is solved by providing a receiving portion in the direction of the traction force of the hook on the base side of the inner peripheral edge of the hook portion of the hook.

The present invention will be described in detail below with reference to figures showing one embodiment of the present invention.

In FIG. 2, l is the hook portion of the hook, and 2 is an annular base portion for securing a rope or the like. , 7! indicates the direction of the traction force on the hook.

Reference numeral 3 designates a receiving portion provided on the inner periphery of the hook portion 1 for receiving a hooking portion of a towed object or a towed object. This receiving portion 3 is provided so as to be located in the direction l of the traction force of the hook. As for the shape, as shown in Fig. 1, it is most preferable to have an arcuate concave shape on the base side, but as shown in Fig. 3, it is inclined in the direction of the traction force so as to cut linearly inward. Alternatively, as shown in FIG. 4, it may be linear and intersect at right angles to the direction l of the traction force.

The surface of the receiving portion 3 does not need to be flat, and may have a cross-sectional shape that is the same as or close to the cross-sectional shape of the hook portion l.

When a rope under tension breaks when using a hook, the hook will fly out in the direction opposite to the cutting point, with the hook in front, in the direction of the traction force. Although the anchoring part of the object or towed object once collides with the inner periphery of the hook, the hook only changes its direction slightly due to the collision, without stopping its flight, and detaches from the anchoring part and flies in the opposite direction from the cutting point. The object may fly out and damage other parts of the towed or towed object or other property in that direction.

However, in the hook of the present invention, when the rope or the like is cut and the hook pops out in the direction opposite to the cutting point along the direction of traction force l, the anchoring part of the towed object or the towed object is connected to the receiving part 3.
, thereby almost stopping its flight and preventing the hook from breaking free from its attachment to the towing or towed object. Furthermore, even if the hook becomes detached from the anchoring part of the towed object or the towed object, the momentum of the flight is weakened, so there is no risk of damaging other parts or objects.

Of course, the material of the hook in the present invention may be exactly the same as that in the conventional hook.

Moreover, the hook part and the base part may have the same shape as a conventional hook except for the receiving part.

[Brief explanation of the drawing]

FIG. 1 is a front view of a conventional hook, FIG. 2 is a front view of an embodiment of the hook according to the present invention, FIG. 3 is a front view of an embodiment of the present invention different from FIG. 2, and FIG. FIG. 3 is a front view of yet another embodiment of the present invention. 1...Hook part 2...Annular base 3...Receiving part l...Direction of traction force Figure 1

Claims (4)

[Claims] (1) A hook characterized in that a receiving portion is provided on the inner peripheral edge base side of the hook portion in the direction of the traction force of the hook. (2) The hook according to claim (1), wherein the receiving portion has an arcuate shape recessed toward the base side. (3) The hook according to claim (1), wherein the receiving portion intersects substantially perpendicularly to the direction of the traction force. (4) The hook according to claim (1), wherein the receiving portion is inclined so as to penetrate deeply into the opposite side of the opening with respect to the direction of the traction force.