JPH0529822Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a flange fastener. More specifically, the present invention relates to a one-touch type flange fastener that can tighten a flange in a short time with extremely simple operations.

[Problems to be solved by conventional techniques and ideas] Flanges have been widely used in the past for connections between pipes, pipe inspection ports, tank inlets and outlets, and the like. Some flanges require strong tightening to prevent gas or liquid inside the piping or tank from leaking to the outside, or conversely, to prevent impurities from entering from the outside. There are easy types that do not require very strong tightening.

Currently, even for such simple flanges, the flange is generally tightened using bolts and nuts, but this tightening work is extremely time-consuming and labor-intensive, and it is difficult to use simple tightening tools or A method was desired.

In view of the above circumstances, it is an object of the present invention to provide a flange fastener that can tighten a flange extremely simply and in a short time.

[Means for Solving the Problems] The flange fastener of the present invention includes a fulcrum portion made of a rod-shaped member that is inserted into a hole formed on the periphery of the flange, and an end of the fulcrum portion that is inserted into the hole. It is characterized by comprising a flange holding part having a substantially U-shaped part extending from the opposite end.

[Example] Next, the flange fastener of the present invention will be explained based on the drawings.

FIG. 1 is a schematic perspective view of an embodiment of the flange fastener of the present invention. In addition, in FIG. 1 and FIGS. 2a to 2b, which will be described later, the flange portion is drawn with a dashed-dotted line in order to make the drawings easier to understand.

In FIG. 1, reference numeral 1 denotes a fulcrum portion inserted into a hole 3 formed at the peripheral edge of a flange 2, and the fulcrum portion 1 is made of a bar-shaped member such as a steel bar.
This rod-shaped member may have a circular cross section or a polygonal cross section. In addition to steel bars, hollow steel pipes, plastics, etc. can also be used.

As the hole 2, a bolt hole drilled in a standard flange can be used, or a hole can be formed separately for the fastener of the present invention. The outer diameter of the fulcrum part 1 is preferably slightly smaller than the inner diameter of the hole 2 so that the fulcrum part 1 does not shake within the hole 2 and the fastener can be easily attached.

A flange holding portion 4 having a substantially U-shaped portion extends from the end portion of the fulcrum portion 1 opposite to the end portion 1a on the side to be inserted into the hole 2. A handle 5, which is used when attaching a fastener to the flange, is fixed to the upper surface of the first member 4a of the flange holding part 4 by welding. Also, the second member 4 of the flange holding part 4
It is preferable that the tip 4c of b is formed into a tapered shape so that the flange 3 can be easily held.

The flange holding part 4 may be made of the same material as the fulcrum part 1, or may be made of other materials such as flat steel.

The fulcrum part 1 and the flange holding part 4 may be made by molding the same member, or may be made by joining separately manufactured members by welding or the like.

FIG. 3 is an explanatory diagram of another embodiment of the flange fastener of the present invention.

In the one shown in FIG. 3, the fulcrum part 11 and the flange holding part 14 are on the same plane, and a protrusion 12 is provided in place of the handle 5. When tightening, a steel pipe or the like is attached to the protrusion 12. It is inserted and the fastener is installed. Member 14a and member 1
The angle α formed with 4b is set to be slightly larger than 90° to facilitate attachment of the fastener to the flange.

Next, a method of installing the flange fastener of the present invention, that is, a method of tightening a flange using the fastener of the present invention will be described.

First, the fulcrum part 1 is inserted into a hole 2, such as a bolt hole, drilled in the peripheral edge of the flange 3 (see Fig. 2a). The number of fasteners depends on the type of flange and the location where it is used, but it is preferable to use two or more fasteners. Next, when the fastener is rotated about the fulcrum part 1 using the handle 5 or the like, the second member 4b of the flange holding part 4 enters the underside of the flange and tightens the flange (see Figure 2b). ). When removing the flange,
All you have to do is reverse the above operation.

[Effects of the invention] The flange fastener of the invention has the effect that the flange can be tightened and removed very easily and in a short time.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view of an embodiment of the flange fastener of the present invention, and FIGS. 2a and 2b are explanatory diagrams showing how a flange is tightened using the flange fastener shown in FIG. FIG. 3 is an explanatory diagram of another embodiment of the flange fastener of the present invention. Main symbols in the drawing, 1, 11...Fully point, 4, 1
4...Flange holding part.

Claims (1)

[Scope of utility model registration request] A fulcrum part made of a rod-shaped member inserted into a hole formed on the periphery of the flange, and an end extending from the end of the fulcrum part on the opposite side to the end inserted into the hole.
A flange fastener comprising a flange holding part having a substantially U-shaped part.