JP2021169867A - Fixing ring for pipe joint - Google Patents

Abstract

To provide a new fixing ring for a pipe joint.SOLUTION: A fixing ring 7 used for fixing an elbow member 9 of a pipe joint 1 to a wall body 100 has a flat-plate shape, and its outer shape is a circle or a polygon. On an inner peripheral surface of the fixing ring 7, a female screw part 70 which threadedly engages with a male screw part 22 of the elbow member 9 is formed. Further, four machine screw holes 71 are formed in a penetrating manner at intervals of 90° in a circumferential direction, and two tool holes 72 are formed in positions different from the machine screw holes 71 at equal intervals in the circumferential direction. A position of threaded engagement of the fixing ring 7 with the elbow member 9 can be changed by fitting a tool in the tool hole 72. Machine screws 8 for fixture are screwed into the wall body 100 through the machine screw holes 71.SELECTED DRAWING: Figure 2

Description

The present invention relates to a fixing ring for a fitting to be fixed to a structure.

Patent Document 1 discloses a fixing structure of a pipe joint that is fixed to the partition plate by partially penetrating a through hole formed in the partition plate that partitions the compartment.

Japanese Unexamined Patent Publication No. 2014-35051

An object of the present invention is to provide a fixing ring for a novel fitting.

In order to achieve the above object, the fixing ring for a pipe joint according to claim 1 of the present invention is a fixing ring used for fixing an elbow member of a pipe joint to a structure, and has a flat plate shape. The outer shape is circular or polygonal, and a female threaded portion screwed into the male threaded portion of the elbow member is formed on the inner peripheral surface, and four screw holes are formed through at intervals of 90 ° in the circumferential direction. Two tool holes are formed at equal intervals in the circumferential direction at positions different from the screw holes, and the screwing position with respect to the elbow member can be changed by fitting a tool in the tool holes and the structure. The screw for fixing is screwed into the body through the screw hole.

An exploded perspective view of a pipe fitting. A front view showing a state in which a pipe joint is fixed to a wall body. A partial cross-sectional view of a side surface showing a state in which a pipe joint is fixed to a wall body. FIG. 3 is a cross-sectional view taken along the line AA of FIG. The perspective view which shows another example of a joint body and an intermediate ring.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 2 to 4, the pipe joint 1 is attached to the wall body 100 as a structure. In the wall body 100, a through hole 103 is formed between the first surface 101 and the second surface 102. The pipe joint 1 is inserted and arranged in the through hole 103, and supplies the hot water received on the first surface 101 side to the second surface 102 side.

FIG. 1 is a perspective view showing the pipe joint 1 disassembled in the direction along the axis L. In FIG. 1, the elbow members 9 constituting the joint body 2 and the flange members 3 forming the flanges of the joint body 2 are located on the first surface 101 side of the wall body 100 in the order of distance from the first surface 101. , An intermediate ring 4, and a water stop ring 5. In FIG. 1, a plurality of (two in this embodiment) screws as pin-shaped fixing members are located on the second surface 102 side of the wall body 100 in the order of distance from the second surface 102. 8, a fixing ring 7, a sliding ring 6, and a water blocking ring 10.

As shown in FIGS. 1 and 3, the elbow member 9 has a cylindrical portion 20 and a pipe connecting portion 21 arranged in an L shape. The inside of the tubular portion 20 and the pipe connecting portion 21 are communicated with each other. A male screw portion 22 is formed on the outer peripheral surface of the tubular portion 20. A female screw portion 23 is formed on the inner peripheral surface of the tubular portion 20.

The pipe connecting portion 21 is made of a well-known one-touch joint. A pipe body P made of a synthetic resin such as cross-linked polyethylene or polybutene is connected to the pipe connecting portion 21. A piping member (not shown) such as a faucet is connected to the female screw portion 23 of the tubular portion 20.

As shown in FIGS. 1, 2 and 4, a pair of flat surface portions 24 (first regulating portions) are formed on the male screw portion 22. The pair of flat surface portions 24 are formed on opposite sides of the axial line of the tubular portion 20 so as to be parallel to each other.

As shown in FIGS. 3 and 4, a flange member 3 is attached to the base end side of the cylindrical portion 20. A female threaded portion 30 screwed into the male threaded portion 22 is formed on the inner peripheral surface of the flange member 3. The flange member 3 is screwed to the base end side of the tubular portion 20.

As shown in FIGS. 3 and 4, after the flange member 3 is screwed into the cylindrical portion 20, the intermediate ring 4 and the water stop ring 5 are inserted into the tubular portion 20.

As shown in FIGS. 1 and 4, the inner peripheral surface of the intermediate ring 4 corresponds to an insertion hole 40 having a shape corresponding to the cylindrical portion 20 and a pair of flat surfaces 24 formed in the male screw portion 22. A pair of shaped plate portions 41 (second regulating portion) are formed. That is, when the tubular portion 20 is rotated in the circumferential direction with the tubular portion 20 inserted through the insertion hole 40, the flat surface portion 24 and the plate portion 41 are in contact with each other and rotate around.

The intermediate ring 4 is formed by pressing a stainless plate, a steel plate, or the like. After pressing along the outer shape of the intermediate ring 4, the plate portion 41 is formed by bending the two planar protrusions formed inside to the outside.

As shown in FIG. 1, the water stop ring 5 is a flat plate ring-shaped packing, and is made of a soft synthetic resin, rubber, or the like. The water stop ring 5 is formed with an insertion hole 50 through which the tubular portion 20 can be inserted.

As shown in FIGS. 3 and 4, the cylindrical portion 20 into which the flange member 3, the intermediate ring 4, and the water stop ring 5 are inserted is inserted into the through hole 103 from the first surface 101 side.

As shown in FIGS. 3 and 4, a water blocking ring 10, a sliding ring 6, and a fixing ring 7 are attached to the tip of the cylindrical portion 20 protruding from the second surface 102 in the same order.

As shown in FIG. 1, the water stop ring 10 is a flat plate ring-shaped packing like the water stop ring 5. The water stop ring 10 is formed with an insertion hole 11 through which the tubular portion 20 can be inserted.

As shown in FIGS. 3 and 4, the sliding ring 6 is a ring-shaped member for reducing the rotational frictional resistance between the water blocking ring 5 and the fixing ring 7. As shown in FIG. 1, the sliding ring 6 is formed with an insertion hole 60 through which the tubular portion 20 can be inserted.

As shown in FIG. 1, a female screw portion 70 screwed into the male screw portion 22 of the tubular portion 20 is formed on the inner peripheral surface of the fixing ring 7. As shown in FIGS. 1 and 2, a plurality of screw holes 71 for inserting the screws 8 are formed through the fixing ring 7 at equal intervals in the circumferential direction (four locations in the present embodiment). , A plurality of tool holes 72 for fitting tools (two in the present embodiment) are formed at equal intervals in the circumferential direction.

When screwing the fixing ring 7 into the male threaded portion 22 of the tubular portion 20, a tool such as a faucet wrench is inserted into the tool hole 72 and rotated to rotate the wall body 100 between the fixing ring 7 and the flange member 3. Can be strongly pinched.

When the tip of the tubular portion 20 protrudes too much from the fixing ring 7 with the fixing ring 7 attached in this way, the amount of screwing of the flange member 3 into the tubular portion 20 is adjusted to form the tubular portion 20. The amount of protrusion from the fixing ring 7 is adjusted.

As shown in FIGS. 2 to 4, two screws 8 are inserted into the screw holes 71 of the fixing ring 7 and screwed in using a tool such as an impact wrench. The screw 8 is a tapping screw with a drill, and the screw 8 can be screwed into the wall body 100 or the like without a pilot hole.

The screw 8 is inserted into the insertion hole 71 of the fixing ring 7, penetrates the sliding ring 6 and the water blocking ring 10, and is screwed into the wall body 100. The screw 8 penetrates the wall body 100 and the water stop ring 5 to reach the intermediate ring 4, further penetrates the intermediate ring 4, and penetrates the flange member 3.

The screw 8 makes the fixing ring 7 and the wall body 100 relatively non-rotatable, and is engaged with the intermediate ring 4 to make the intermediate ring 4 and the wall body 100 relatively non-rotatable.

As shown in FIG. 2, the screw 8 is screwed into the four positions of the screw holes 71 so as not to damage the elbow member 9. That is, when the fixing ring 7 is screwed into the tubular portion 20, the fixing ring 7 is adjusted so that the screw hole 71 is arranged at a position avoiding the joint body 2.

Since the screw holes 71 are formed at four positions on the circumference at equal intervals, the positions of the screw holes 71 can be adjusted at 90 ° intervals. Further, if the screw hole 71 is arranged in the vicinity of the flat surface portion 22 with the flat surface portion 22 formed in the tubular portion 20 as a guide, the elbow member 9 is not damaged.

By the way, as shown in FIGS. 2 to 4, when the faucet or the like is screwed into the female thread portion 23 of the joint body 2 with the pipe joint 1 attached to the wall body 100, the joint body 2 becomes a faucet or the like. Try to take him around. Then, the flat surface portion 24 formed on the joint body 2 and the plate portion 41 formed on the intermediate ring 4 come into contact with each other, and the intermediate ring 4 also tries to rotate.

However, the intermediate ring 4 cannot rotate relative to the wall body 100 via the screw 8. That is, even if the joint body 2 is not stopped by a tool or the like, the screw 8 for the fixing ring 7 is used to prevent the joint body 2 from rotating, and the faucet or the like can be easily screwed in. .. In this way, by using the screw 8 for the fixing ring 7, the configuration can be simplified.

Further, as shown in FIGS. 2, 3 and 4, in the pipe joint 1, the outer diameter of the intermediate ring 4 is larger than the outer diameter of the fixing ring 7.

When screwing the screw 8 from the fixing ring 7 to the intermediate ring 4, the operator may damage the elbow member 9 and screw the screw 8 radially outward of the fixing ring 7. However, even if the screw 8 is tilted outward in the radial direction of the fixing ring 7, the screw 8 can be engaged with the intermediate ring 4, facilitating the screwing operation of the screw 8.

<Modification example>
The above embodiment can be changed as follows, for example.
○ As shown in FIG. 5, in the joint body 2 of the pipe joint 1, the flat surface portion 24 formed on the male threaded portion 22 of the elbow member 9 is deleted, and the male threaded portion 22 has a groove 200 having a V-shaped cross section (first regulation). Part) to form. Further, the plate portion 41 formed on the intermediate ring 4 is deleted, and a protrusion 400 (second regulating portion) having a shape corresponding to the groove 200 is formed on the inner peripheral surface of the intermediate ring 4.

When a faucet or the like is screwed into the female threaded portion 23 of the elbow member 9, when the elbow member 9 tries to rotate around the faucet, the groove 200 hits the protrusion 400 to prevent relative rotation, and the elbow member 9 rotates. Suppress.

The shapes of the first regulating portion and the second regulating portion are not limited to this, and may be any shape as long as they hit each other and suppress the relative rotation when the joint main body tries to rotate together.

○ In the pipe joint 1, the intermediate ring 4 is arranged between the second surface 102 and the fixing ring 7.

○ The flange member 3 is integrally formed with the elbow member 9.

○ The shape of the joint body 2 should be, for example, an I-shaped nipple or a T-shaped cheese.

○ Make the outer shape of the intermediate ring 4 and the fixed ring 7 polygonal.

○ The water stop ring 5 shall be arranged only on the first surface 101 side or the second surface 102 side of the wall body 100. Further, in applications / environments where it is not necessary to consider the inflow of liquid or the like, the water stop ring 5 may be omitted.

○ Form a threaded portion on the inner peripheral surface or outer peripheral surface of the pipe connecting portion 21 to connect a joint or the like.

○ Other fixing members include tapping screws, nails, pins, and the like.

○ Other structures include floors and ceilings.

<Additional notes>
The technical idea that can be grasped from the above embodiment will be described.
(1) A tubular portion inserted into a through hole between the first surface and the second surface of the structure, and a tubular portion arranged on the first surface side of the structure and communicating with the tubular portion. It has a pipe connecting portion to which a pipe body is connected and a flange portion provided on the base end side of the tubular portion, and a male screw portion is formed on the outer peripheral surface of the tubular portion, and the tubular portion is formed. A female threaded portion is formed on the inner peripheral surface of the joint body, and a first regulating portion is formed on a part of the male threaded portion. A fixing ring that is screwed into the male threaded portion of the tubular portion and sandwiches the structure between the flange portion and the flange portion and the first surface of the structure or the first surface of the structure. It is arranged between the two surfaces and the fixing ring, and has an insertion hole corresponding to the tubular portion, and the inner peripheral surface of the insertion hole has a shape corresponding to the first regulation portion. An intermediate ring formed with a second regulating portion that regulates relative rotation with the tubular portion by abutting against the first regulating portion, and the fixing ring is passed from the fixing ring to the structure to fix the structure. A pin-shaped fixing member that makes the ring and the structure non-rotatable relative to each other is provided, and the fixing member reaches the intermediate ring and is engaged with the intermediate ring to form the intermediate ring and the structure. A pipe joint that makes it impossible to rotate relative to the body.

(2) The pipe joint according to the technical idea (1), wherein the outer diameter of the intermediate ring is larger than the outer diameter of the fixed ring.

2 ... Joint body, 3 ... Flange member, 4 ... Intermediate ring, 7 ... Fixing ring, 8 ... Screw, 9 ... Elbow member, 20 ... Cylindrical part, 24 ... Flat part, 41 ... Plate part.

Claims (1)

A fixing ring used to fix an elbow member of a pipe joint to a structure, which is flat and has a circular or polygonal outer shape, and is threaded on the inner peripheral surface of the male screw portion of the elbow member. A matching female thread portion is formed, four screw holes are formed through at intervals of 90 ° in the circumferential direction, and two tool holes are formed at positions different from the screw holes at equal intervals in the circumferential direction. For pipe joints in which a tool can be fitted in a tool hole to change the screwing position with respect to the elbow member, and a screw for fixing is screwed into the structure through the screw hole. Fixed ring.

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