JPH08285161A - Slipping-out preventive structure of piping joint - Google Patents

Abstract

PURPOSE: To provide a slipping-out preventive structure of a piping joint which is formed so that a member to prevent slipping-out is integrally installed on both or one of a connecting pipe and a joint main body. CONSTITUTION: An opening such as an inverted U shape to house a connecting pipe 2 is provided in a flange part of a joint main body 1, and a plate-like connecting part 14 capable of being freely folded back is integrally formed, and the connecting part 14 is superposed on the upper surface side of a flange part of the connecting pipe 2 inserted into the joint main body 1, and they are fixed together by a machine screw or the like. A locking projection part is arranged in the flange part of the connecting pipe 2, and a recessed part to lock the locking projection part is formed in the flange part on the joint main body side. A screw receiving part 10 having a screw hole is formed on a side surface of the flange part on one side, and an installing part of a screw member is formed on a side surface of a flange part on the other side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention prevents an o-ring from being attached to an outer peripheral surface of a connecting pipe and prevents the connecting pipe from deviating from the joint main body after the distal end is inserted into the joint main body for connection. The present invention relates to a pipe joint retaining structure.

[0002]

2. Description of the Related Art A conventional pipe joint retaining structure is shown in an exploded perspective view of FIG. As shown in the figure, in the conventional case, the flange portions 3 and 4 are formed on the end surface of the joint body 1 and the outer peripheral surface near the tip of the connecting pipe 2. Then, the O-ring 5 is externally fitted and mounted on the outer peripheral surface of the connecting pipe 2 closer to the tip than the flange portion 4, and this is inserted into the joint body 1 to join the flange portions 3 and 4 together.

Then, the elastic sandwiching member 6 made of spring steel is externally fitted to the flange portions 3 and 4, so that the flange portions 3 and 4 are inserted into the long holes 7 formed in the side surfaces of the sandwiching member 6. To prevent the connecting pipe 2 from deviating from the joint body 1.

[0004]

However, in the above-mentioned conventional retaining structure, it is necessary to separately mold and prepare the elastic holding member 6 with spring steel, and the production cost is accordingly increased. There was a problem that the cost was high and it took time to manage parts and construction work.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems and has been improved and removed. A member for preventing disconnection is integrally attached to one or both of a connecting pipe and a joint body. It is intended to provide a retaining structure for a pipe joint as described above.

In order to solve the above-mentioned problems, the means of claim 1 adopted by the present invention is to insert the connecting pipe into the joint main body of the pipe through the O-ring, and to flange the joint main body and the connecting pipe. When connecting parts to each other to prevent disengagement, a flat plate-like connecting part that has a U-shaped opening into which the connection pipe can be inserted and is foldable is integrally formed in the flange part of the joint body, and is inserted into the joint body. In the pipe joint retaining structure, the connecting portion is superposed on the upper surface side of the flange portion of the connecting pipe, and the connecting portion is fixed to the joint body with screws or the like.

According to a second aspect of the present invention, the connecting pipe is inserted into the joint main body of the pipe through the O-ring, and the flange portions of the joint main body and the connecting pipe are connected to each other to prevent the pipe from coming off. In the above, there is provided a retaining structure for a pipe joint, wherein the flange portion of the connection pipe is provided with a locking convex portion, and the flange portion on the joint body side is formed with a concave portion for locking the locking convex portion.

According to a third aspect of the present invention, the connecting pipe is inserted into the joint body of the pipe through the O-ring, and the flange portions of the joint body and the connecting pipe are connected to each other to prevent the pipe from coming off. In the above, there is provided a retaining structure for a pipe joint, wherein a screw receiving portion having a screw hole is formed on a side surface of the flange portion on one side, and an attaching portion of the screw member is formed on a side surface of the flange portion on the other side. .

According to a fourth aspect of the present invention, the connecting pipe is inserted into the joint main body of the pipe through the O-ring, and the retaining structure is provided between the joint main body and the connecting pipe. A flange portion is formed on the end surface on the side to which the connecting pipe is connected, a flat plate-like connecting portion having an insertion hole for the connecting pipe and which can be folded back is formed on the flange portion, and a protrusion for preventing slippage is formed on the outer peripheral surface of the connecting pipe. A pipe joint characterized in that a recess corresponding to the projection for preventing slippage is formed in the flat plate-like connecting portion, and the connecting portion through which the connecting pipe is inserted is fixed to the flange portion of the joint body with a screw or the like. It has a retaining structure.

[0010]

In the means of the first aspect of the present invention, the flange portion of the joint body is integrally formed with a flat plate-like connecting portion having a U-shaped opening and capable of being folded back. An O-ring is externally fitted on the tip side of the connecting pipe, inserted into the joint body, and twisted while folding back the connecting portion so that the connecting pipe is superposed on the upper surface side of the flange portion of the connecting pipe. The flanges are fixed so that the flanges do not separate from each other, preventing them from coming off.

According to the means of claim 2 of the present invention,
The connecting projection is formed on the connecting pipe, the engaging recess is formed on the joint body, and both are engaged to prevent the connecting pipe from departing from the joint body.

Further, in the means of claim 3 of the present invention, the receiving portion of the screw member is formed on the side surface side of the flange portion of the joint body, and for example, the screw receiving portion is formed on the side surface of the flange portion of the joint body. And the mounting portion of the screw member is formed on the side surface of the flange portion on the other side. After inserting the connecting pipe with the O-ring into the joint body, the mounting portion of the screw member and the screw receiving portion are screwed together with the screw member, so that the flange portion of the connecting pipe is separated from the flange portion of the joint body. It is not separated and the deviation of the connecting pipe is prevented.

Further, in the means of claim 4 of the present invention, a flange portion is formed on the end surface of the joint body on the side to which the connecting pipe is connected. Then, a flat plate-like connecting portion which has an insertion hole for the connecting pipe and which can be folded back is formed on the flange portion. With this connecting part open, insert the tip side of the connecting pipe into the insertion hole from the lower surface side of the connecting part, fit the O-ring on the tip side of the connecting pipe, and attach the tip side of the connecting pipe to the joint body. By inserting into the inside, the flange part of the joint body and the connecting part of the connecting pipe are overlapped. Finally, the connecting portion is fixed to the flange portion of the joint body with a screw or the like to prevent it from coming off.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described below with reference to the embodiments shown in the drawings. The same reference numerals as in the conventional case are the same members. FIGS. 1 (a) to 1 (d) show an embodiment according to the means of claim 1 of the present invention. As shown in the figure, in this embodiment, the flange portion 8 is formed on the end surface of the joint body 1 into which the connecting pipe 2 is inserted. A screw receiving portion 10 such as a screw 9 is formed on the side surface of the flange portion 8.

Further, in the hole of the flange portion 8, a step portion 12 for inserting the flange portion 11 formed on the outer peripheral surface of the connecting pipe 2 is formed. Further, the flange portion 8 is integrally formed with a flat plate-shaped connecting portion 14 having a U-shaped opening 13 or the like. In this case, the joint body 1 is made of synthetic resin, and the connecting portion 14 can be repeatedly folded back. The connecting portion 14 is provided with a mounting portion 15 such as a screw 9 corresponding to the screw receiving portion 10.

To connect the connecting pipe 2, first, as shown in FIG. 1A, an O-ring 5 is fitted on the outer peripheral surface of the distal end of the connecting pipe 2 and inserted into the joint body 1. Then, as shown in FIG. 2B, the attachment portion 15 such as a screw of the connection portion 14 is attached.
Then, it is folded back so as to overlap with the screw receiving portion 10 side of the joint body 1, and at the same time, the connecting portion 14 is twisted to fit the outer peripheral surface of the connecting pipe 2 into the U-shaped opening 13. Finally, the mounting portion 15 and the screw receiving portion 10 that are overlapped with each other may be connected and fixed with a screw 9 or the like.

FIG. 1D is a vertical cross-sectional view of the joint portion after connection. With such a connection, the flange portion 11 of the connecting pipe 2 is the flange portion 8 of the joint body 1.
It is sandwiched between and the connecting portion 14 fixed to overlap with this and never deviates from the joint body 1.

FIG. 2 relates to an embodiment of the means of claim 2 of the present invention. In this embodiment, the same flange portions 3 and 4 as those of the conventional one shown in FIG. 5 are formed on the joint body 1 and the connecting pipe 2, respectively, and the engaging convex portion 16 is formed on the flange portion 4 on the connecting pipe 2 side. A locking recess 17 corresponding to the locking projection 16 is formed on the flange portion 3 on the joint body 1 side.
In order to prevent disengagement, it is only necessary to fit the locking projection 16 of the connection pipe 2 into the locking recess 17 of the joint body 1.

FIG. 3 relates to an embodiment of the means of claim 3 of the present invention. In this embodiment, the screw receiving portion 18 is formed on the side surface of the flange portion 3 of the joint body 1, and the mounting portion 19 such as a screw is formed on the side surface of the flange portion 4 of the connecting pipe 2. For connection work, if the O-ring 5 is fitted on the tip side of the connecting pipe 2 and inserted into the joint body 1 and the mounting portion 19 and the screw receiving portion 18 are connected by screws 9 or the like, the connecting pipe 2 deviates. Can be prevented.

FIGS. 4A and 4B relate to an embodiment of the means of claim 4 of the present invention. In this embodiment, the joint body 1 is made of a synthetic resin material,
A screw receiving portion 20 is formed on the side surface of the flange portion 3, and a flat plate-like connecting portion 21 that can be repeatedly folded back is integrally formed. The connecting portion 21 has an insertion hole 22 for the connecting pipe 2, and also has a mounting portion 23 such as a screw corresponding to the screw receiving portion 20 when the connection portion 21 is folded back and overlapped with the flange portion 3.

On the other hand, protrusions 24 are formed on the outer peripheral surface of the connecting pipe 2 at positions separated by 180 degrees. The flange portion 3 and the connecting portion 21 of the joint body 1 are formed with recesses 25 and 26 corresponding to the protrusions 24. The recessed portion 25 of the flange portion 3 and the recessed portion 26 of the connecting portion 21 are arranged at different positions on the circumference.

The connection work is performed from the state shown in FIG. 4 (a) in which the connecting portion 21 of the joint body 1 is opened and the connecting portion 2 is opened.
The connecting pipe 2 is inserted into the insertion hole 22 from the lower surface direction of 1. At this time, the projection 24 of the connecting pipe 2 and the recess 26 of the connecting portion 21 are matched with each other. After the insertion, the connecting pipe 2 is rotated 90 degrees in the circumferential direction so that the projections 24 of the connecting pipe 2 are positioned in the vertical direction.

Next, an O-ring 5 is externally fitted and attached to the outer peripheral surface of the connecting tube 2 on the tip side, and the connecting tube 2 is pushed upward, and at the same time, the tip side is inserted into the joint body 1 and finally the connecting portion. The attachment portion 23 such as a screw of 21 and the screw receiving portion 20 of the flange portion 3 may be fastened with a screw 9 or the like. As a result, the projection 24 of the connecting pipe 2 is locked by the connecting portion 21,
Withdrawal is done.

By the way, the present invention is not limited to the above-mentioned embodiments, but can be appropriately modified. For example, the screw receiving portion and the mounting portion such as a screw may be a locking piece and a locking step portion using a hook member or the like, and the locking concave portion 17 shown in FIG. 2 or the concave portion shown in FIG. It is also possible to provide a large number of 25 at different positions such as 90 degrees, and to appropriately select the engagement position according to the piping direction of the connecting pipe 2 at the site.

[0025]

As described above, according to the present invention,
Since the means for retaining the connecting pipe on both or one of the joint body and the connecting pipe is integrally molded, it is not necessary to separately prepare a separate member for retaining as in the conventional case. However, it is advantageous in terms of cost and does not require labor such as storage of parts. Further, the connecting work is easier than the conventional case in which the separate member is used for retaining.

[Brief description of drawings]

1 (a) to 1 (c) are perspective views showing a connection procedure of an embodiment of claim 1 of the present invention, and FIG. 1 (d) is a longitudinal sectional view showing a state after the connection. .

FIG. 2 is a perspective view showing an embodiment of claim 2 of the present invention.

FIG. 3 is a perspective view showing an embodiment of claim 3 of the present invention.

FIG. 4 (a) and FIG. 4 (b) are perspective views showing a connection procedure of an embodiment of claim 4 of the present invention.

FIG. 5 is an exploded perspective view showing a conventional pipe joint retaining structure.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Joint body 2 ... Connection pipe 3 ... Flange portion of joint body 4 ... Flange portion of connection pipe 5 ... O-ring 8 ... Flange portion of joint body 10 ... Screw receiving portion 11 ... Flange portion of connection pipe 13 ... Opening 14 ... Connection part 15 ... Mounting part for screws or the like 16 ... Locking convex part 17 ... Locking recess 18 ... Screw receiving part 19 ... Mounting part for screws 20 ... Screw receiving part 21 ... Connecting part 22 ... Insertion hole 23 ... Mounting portion 24 ... Projection 25 ... Recessed portion 26 ... Recessed portion

Claims (4)

[Claims] Claim: What is claimed is: 1. A connection pipe is inserted into a joint body of a pipe via an O-ring, and the flange portions of the joint body and the connection pipe are connected to each other to prevent disconnection. An integrally formed flat plate-like connecting portion having a U-shaped opening into which a slot is inserted and which can be folded back, and the connecting portion is superposed on the upper surface side of the flange portion of the connecting pipe inserted into the joint body. Piping joint retaining structure that is fixed to the joint body with screws, etc. 2. A connecting pipe is inserted into a joint body of a pipe via an O-ring, and flange portions of the joint body and the connecting pipe are connected to each other to prevent the joint from being pulled out. A retaining structure for a pipe joint, characterized in that a convex portion is provided, and a concave portion for locking the locking convex portion is formed in a flange portion on the joint body side. 3. A connection pipe is inserted into a joint main body of a pipe via an O-ring, and flange portions of the joint main body and the connection pipe are connected to each other to prevent disconnection. A retaining structure for a pipe joint, wherein a screw receiving portion having a screw hole is formed, and a mounting portion for a screw member is formed on a side surface of a flange portion on the other side. 4. A joint pipe, wherein a connecting pipe is inserted through an O-ring to provide a retaining structure between the joint body and the connecting pipe, wherein a flange is provided on an end face of the joint body on the side where the connecting pipe is connected. Forming a portion, forming a flat plate-like connecting portion having a through hole for the connecting pipe in the flange portion and being capable of being folded back, forming a protrusion for preventing removal on the outer peripheral surface of the connecting pipe, and connecting the flat plate-like portion. A retaining structure for a pipe joint, characterized in that a concave portion corresponding to a protrusion for retaining is formed in the portion, and a connecting portion through which a connecting pipe is inserted is fixed to a flange portion of a joint body with a screw or the like.