JPH0223849Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shackle, and more particularly to an improved shackle that is consistent.

A shackle is usually a horseshoe-shaped metal fitting with a bolt insertion hole provided near the tip thereof, a bolt shaft inserted into the hole, and then tightened with a nut. Such shackles are used to connect various objects. Particularly when used in the ocean, the horseshoe-shaped top of the shackle and the bolt shafts of other connected shackles rub against each other under the influence of waves, causing the bolt shafts to rotate in a direction that loosens the nuts. There was a drawback that the loose connection could come off.

Conventional methods to solve these phenomena include drilling a small hole in the bolt shaft located on the outside of the tightened nut and inserting a pin into it, or A pin was inserted into the hole. However, although all of these measures are temporarily effective, they cannot withstand long-term use.

The present inventor completed the present invention as a result of various studies to solve these conventional drawbacks.

Next, the present invention will be explained with reference to the drawings. As shown in FIG. 1, the shaft of the present invention is provided with insertion holes 3, 3 for passing the bolt shaft 2 through the bolt shaft 2 near the tip of a connecting member 1, such as a horseshoe shape, and with the bolt shaft passed through the insertion hole. A locking portion 6 is provided so as to be in contact with a side edge surface 5 of a regular hexagonal head (hereinafter referred to as bolt head) 4 of the bolt.

A bolt head 4 is attached to the connecting member 1 configured in this way.
The bolt 2 is fixed by inserting the bolt shaft into the bolt insertion holes 3, 3 in a state where the side edge surface 5 and the locking part 6 are joined, and tightening the nut 4 by fitting the nut 4 into the threaded part of the bolt shaft. be done.

As another embodiment, as shown in FIG. 3, a regular hexagonal recess 7 into which the head 4 of the bolt 2 fits may be provided in one of the bolt insertion openings 3 of the connecting member 1.

In addition to nuts, the means for fixing the bolt may also be, for example, by providing a small hole in the connecting member 1, providing a small hole communicating with the small hole in the bolt shaft 2, and inserting a pin into the small hole to fix the bolt.

According to the present invention, since the bolt inserted into the shackle does not rotate, the tightening of the nut or the like will not loosen, and the coupling will not come off.

In addition, since the bolt head 4 is fixed on a wide surface, the bolt head 4 will not be damaged even by strong impact force, and since the bolt head 4 has a regular hexagonal shape, the position of the bolt head can be adjusted sequentially. By rotating and fixing it, it is possible to prevent the bolt shaft 2 from becoming bent on one side due to friction between the shafts.

[Brief explanation of the drawing]

Figures 1 and 3 show a front view of the shackle according to the present invention, Figure 2 shows a partial side view of the bolt head side of Figure 1, and Figure 4 shows the bolt head of Figure 3. A partial side view of the side is shown.

Claims (1)

[Scope of utility model registration request] A locking part is provided in the vicinity of the bolt insertion hole of the connecting member so as to connect with the side edge of the regular hexagonal bolt head, or a regular hexagonal recess into which the bolt head fits is provided in the bolt insertion hole. Shackle.