JPH0257711A - Loosely hanging single fastened bolt - Google Patents

Abstract

PURPOSE:To make it possible to carry out its fastening work only from one side, by providing an anchor rail in an anchor base which is semi-elliptically cut out at opposite sides of one portion about the end of its shaft, and making it that two anchors connected together by means of an anchor pin move on this anchor rail and are fixed to the end of the anchor. CONSTITUTION:An anchor base 5 is formed within a shaft 6 which is semi- elliptically cut out at opposite sides of one portion near its end, and two anchors 4 connected together by means of an anchor pin 3 which moves on an anchor rail 1 formed within the anchor base are mounted to the base. In order to fasten the shaft 6 and the anchors 4 together, they are lined up when the pin is inserted into the hole of each of the assemblies. When the pin has made to pass through the hole of each of the assemblies, each of the anchors 4 naturally rotates by 90 deg. and further moves on the anchor rail 1 and is then fixed to the anchor end 2. The assemblies are then fastened to each other by a washer 7 and a knut 8 from the side at which the top of the pin is located. Thus its fastening work is achieved only from one side; moreover, the anchor end 2 having screw threads, it can also be used as a bolt as in conventional ways.

Description

[Detailed Description of the Invention] This invention has the same function as a conventional bolt, and can be tightened using only one side. Conventional bolts can only be used from both sides of the part, so one side It is difficult and dangerous when it is hidden in parts or cannot be reached, and the economic loss to compensate for it is also large. The present invention has been devised to eliminate that drawback.

To explain this with a drawing, an anchor base (5) is made from a shaft (6) with a semicircular shape cut off on both sides of the tip, and two anchors are connected by an anchor pin (3) that moves the anchor rail il+ inside. The two anchors (4) are fixed and reinforced with anchor ends tel and fastened from one side with washers (71 nuts (8)).

The method of using the present invention is to pass holes in the same direction in the parts to be assembled, align the anchors (4) on the anchor base (5) at 180 degrees with respect to the shaft (6), and insert the anchors (4) into the holes so that the anchors (4) are oriented in the same direction. When it comes out to the side, it will naturally intersect at 90 degrees, move the anchor base (1), fix it to the anchor end (2), and tighten it.Also, since the anchor end (2) has thread threads, it can be used like a conventional bolt. It is possible.

The present invention provides a safer, faster and more reliable result than conventional double-sided work using bolts by only working on one side, and has immeasurable economical effects.

[Brief explanation of the drawing]

Figure 1 is the factor of the present invention, Figure 2 is the factor when using the present invention, Figure 3 is an enlarged detailed view of the present invention.

Claims (1)

[Claims] A shaft (6
), create an anchor base (5), move the anchor rail (1) inside it, attach two anchors (4) connected with an anchor pin (3), and attach the anchor end (2).
It is a bolt that is fixed and reinforced to the base and fastened from one side with a washer (7) and a nut (8). The anchor end (2) also has a threaded thread, so it can be used like a conventional bolt.