JPH0137274Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a box stock for connecting flexible metal pipes such as bellows-shaped pipes.

This type of box pot is used as a base pot for large installed gas appliances. This type of equipment is a stationary type and can be installed in a fixed location. Therefore, from the viewpoint of safety, flexible metal pipes are used for the piping from the box stock, as shown in Figure 1.

In the conventional box-socket of this kind, as shown in the figure, a connecting screw 2 is screwed to a cap nut 11 provided on a flexible metal tube 1, and this connecting screw is provided at the downstream end of the box-socket main body 3 of the box-socket. A method of screwing into the connection port 31 is adopted.

In this conventional method, when the connection is completed, torsional stress is still applied to the flexible metal tube 1,
The bent state of the flexible metal tube may become unsightly, and the screwed portion may become loose due to the residual torsional stress.

This is because the connection screw 2 is screwed into the connection port 31 while the connection screw 2 remains connected to the flexible metal tube.

The object of the present invention is to enable connection means such as connection screws to be attached to the connection port of the main body of the pot without twisting.

The technical means of the present invention for solving the above problems is to provide a flange at the connection port of the Kotoku body, provide a connection tube that has a flange that fits the flange and connects the flexible metal pipe side, and The connecting tube is removably attached to the connecting port by screwing the flanges together.

The above technical means of the present invention operates as follows.

The connecting tube is screw-connected to the flexible tube in advance either directly or via a connecting screw. At this time, since the connecting tube is in a free state, no torsional stress remains in the flexible metal tube. When this connecting tube is flange-connected to the connection port provided at the downstream end of the pot body, piping from the pot pot to the instrument using the flexible metal pipe is completed. In this flange connection of the connecting tube, the flanges on the connecting tube side and the connecting port side are bolted together at multiple points while the connecting tube remains in a fixed posture without being twisted, so it is flexible during this connection work. Twisting does not occur in the flexible metal tube.

Since the present invention has the above configuration, it has the following unique effects.

Since no torsional stress is applied to the flexible metal pipe in its installed state, the piping does not look unsightly in its installed state, and the connections do not loosen due to residual stress.

Next, the embodiments will be described. In the first embodiment, one side of the connecting tube is a male threaded part that fits into a cap nut, and the other side is a flange part that fits into a connecting port of the main body.

In this case, the conventional connection screw 2 is no longer necessary,
The connecting tube can be directly connected to the flexible metal tube using a cap nut that is attached to the flexible metal tube in advance.

Next, in the second embodiment, the surfaces of the flange of the connecting tube and the flange of the connection port are inclined at 45 degrees with respect to the channel axis.

According to this embodiment, when the mutual screwing posture of the flanges is reversed, the axis of the connecting cylinder becomes substantially coaxial with the socket main body, and the downstream piping of the box socket can be guided through the inside of the wall surface. Therefore,
In this case, two types of piping can be created depending on how the connecting tube is attached.

Hereinafter, embodiments of the present invention will be described based on the drawings from FIG. 2 onwards.

The embodiment shown in FIGS. 2 and 3 is connected using a connecting screw 2 that is screwed into a cap nut 11 of a flexible metal tube 1, and is installed in a box 4 buried in a wall. It is flanged to a connecting tube 32 provided at 3. The flange 33 of this connection tube is aligned with the flange 34 of the connection port 31 of the Kotoku main body 3, and when the plurality of small bolts 35, 35 passed through from one flange 33 side are screwed into the other flange 34, both connection is completed.

Next, in the second embodiment shown in FIG. 12, and has the same configuration as the male threaded portion 21 of the connection screw 2 described above. Therefore, in this case, the connecting screw 2 is not necessary.

In the above-mentioned structure, the connecting tube 32 is perpendicular to the gas flow path in the main body of the tank, and opens on the open side of the box 4 buried in the wall surface 5. Therefore,
In this case, the piping from the pot main body 3 housed in the box 4 will be led out as it is.

However, in the second embodiment shown in FIG. 4, two types of piping configurations are possible depending on the mounting orientation of the connecting tube 32.

This is because in this embodiment, the flange 34 of the connection port 31 is inclined at 45 degrees with respect to the flow path axis of the main body 3, and the flange 33 of the connection tube 32 is also inclined at 45 degrees.

According to this embodiment, the connecting tube 32 and the connecting port 31 can be connected and fixed even in the two mounting positions shown in the figure. In the case of the piping shown by the imaginary line in the figure, the flexible metal pipe 1 connected via the connecting tube 32 is buried in the wall surface 5.

For this reason, if a through hole of a predetermined size is formed in the upper wall of the box 4 in advance and the hole is closed with a lid 41, the above two uses can be performed without changing other parts by attaching and removing the lid. mode becomes possible.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the conventional example, FIG. 2 is a sectional view of the first embodiment of the present invention, FIG. 3 is a front view thereof, and FIG. 4 is an explanatory diagram of the second embodiment. 1... Flexible metal tube, 11... Cap nut, 2... Connection screw, 3... Kotoku body, 31...
... Connection port, 32 ... Connection tube, 33 ... Flange,
34...Flange, 35...Small bolt, 36...
Male thread part, 4...Box, 5...Wall surface.

Claims (1)

[Claims for Utility Model Registration] (1) In a box kettle in which a cap nut is provided at the end of a flexible metal tube, and the cap nut is directly or indirectly screwed and connected to a connecting tube on the pot body side. , a flange is provided on the connection port of the Kotoku body,
A flexible pipe comprising a flange that fits the flange and a connecting tube for connecting the flexible metal pipe side, and the connecting tube is removably attached to the connecting port by screwing the flanges together. Box for metal pipes. (2) A flexible metal pipe box socket according to claim 1, which is a utility model registration, and wherein one side of the connecting cylinder is a male threaded part that fits into a cap nut, and the other side is a flange part that fits into a connection port of the socket main body. (3) For a flexible metal pipe according to claim 1 or 2 of the utility model registration claim, in which the flange of the connecting tube and the flange of the connection port are inclined at 45 degrees with respect to the channel axis. Botsukusukotsuku.