JP6905690B2 - How to fix pipe fittings - Google Patents

Description

The present invention relates to a method for fixing a pipe joint.

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. The fixing structure of the pipe joint is a pipe joint having a tubular insertion portion to be inserted into a through hole formed in a partition plate for partitioning a section, and the partition plate is sandwiched in a state where the insertion portion is inserted into the through hole. It is provided with a fixing member for fixing the pipe joint to the partition plate.

An outer peripheral threaded portion is formed on the outer peripheral surface of the insertion portion, and a first plane portion is formed on the outer peripheral threaded portion. Further, the fixing structure of the pipe joint includes an intermediate member having a second plane portion arranged so as to face the first plane portion. On the outer peripheral surface of the intermediate member, a flat outer peripheral flat portion is formed at least in part.

When the pipe member is connected to the pipe joint in a state where the pipe joint is fixed to the partition plate by the fixing member, the outer peripheral plane portion formed on the intermediate member is sandwiched by using, for example, a tool. Then, even if the pipe joint tries to rotate, the first plane portion formed in the insertion portion hits the second plane portion formed in the insertion hole of the intermediate member, and the rotation of the pipe joint is suppressed.

Japanese Unexamined Patent Publication No. 2014-35051

In the fixed structure of the pipe joint of Patent Document 1, there is a troublesome need for a separate tool such as a spanner when connecting the pipe member to the pipe joint, and the connection work is troublesome.

An object of the present invention is to provide a method for fixing a pipe joint capable of easily screwing a faucet or the like into a female threaded portion of a tubular portion.

In order to achieve the above object, in the method of fixing a pipe joint according to claim 1 of the present invention, a pipe connection portion of the pipe joint is arranged on the first surface side of the wall body, and a penetration provided in the wall body is provided. A tubular portion of the pipe joint is inserted into the hole, and a male screw portion formed on the outer peripheral surface of the tubular portion of the pipe joint is projected from the through hole to the second surface side of the wall body. , An intermediate ring in which the relative rotation with the male screw portion is suppressed is screwed to the male screw portion, and the male screw portion is screwed into the male screw portion to maintain a state in which the male screw portion protrudes toward the second surface side of the wall body. While inserting the ring and inserting the pin-shaped fixing member through the fixing ring, the intermediate ring is perforated with the fixing member, and the fixing member is inserted into the wall in a state of penetrating the fixing ring and the intermediate ring. Attach to the body.

In order to achieve the above object, in the method of fixing a pipe joint according to claim 2 of the present invention, a pipe connection portion of the pipe joint is arranged on the first surface side of the wall body, and a penetration provided in the wall body is provided. The tubular portion of the pipe joint was inserted into the hole, and on the first surface side of the wall body, the male screw portion formed on the outer peripheral surface of the tubular portion suppressed the relative rotation with the male screw portion. With the intermediate ring inserted and the male threaded portion protruding from the through hole toward the second surface side of the wall body, the male threaded portion is screwed into the male threaded portion to form the wall. A fixing ring that maintains a protruding state is inserted into the second surface side of the body, and the intermediate ring is perforated with the fixing member while inserting a pin-shaped fixing member through the fixing ring and the wall body.

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. A through hole 103 is formed in the wall body 100 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 tubular 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 tubular 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 tubular 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 tubular 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 tubular 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 tubular 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 threaded portion 70 screwed into the male threaded 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 driver. 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 screw 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 24 with the flat surface portion 24 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, if 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 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 for making the ring and the structure relatively non-rotatable 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 (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 (2)

Place the pipe connection part of the pipe joint on the first side of the wall body,
The tubular portion of the pipe joint is inserted into the through hole provided in the wall body, and the tubular portion is inserted.
In a state where the male screw portion formed on the outer peripheral surface of the tubular portion of the pipe joint is projected from the through hole to the second surface side of the wall body.
An intermediate ring in which the relative rotation with the male threaded portion is suppressed on the male threaded portion, and a fixing ring that is screwed into the male threaded portion to maintain the male threaded portion protruding toward the second surface side of the wall body. And insert,
While inserting the pin-shaped fixing member through the fixing ring, the intermediate ring is perforated with the fixing member.
By attaching the fixing member to the wall body while penetrating the fixing ring and the intermediate ring, the intermediate ring is a pipe joint that cannot rotate relative to the wall body via the fixing member. Fixing method. Place the pipe connection part of the pipe joint on the first side of the wall body,
The tubular portion of the pipe joint is inserted into the through hole provided in the wall body, and the tubular portion is inserted.
On the first surface side of the wall body, an intermediate ring in which relative rotation with the male screw portion is suppressed is inserted into the male screw portion formed on the outer peripheral surface of the tubular portion.
With the male screw portion protruding from the through hole toward the second surface side of the wall body,
A fixing ring that is screwed into the male threaded portion to maintain the male threaded portion protruding toward the second surface side of the wall body is inserted into the male threaded portion.
By inserting the pin-shaped fixing member through the fixing ring and the wall body and perforating the intermediate ring with the fixing member, the intermediate ring can not rotate relative to the wall body via the fixing member. fixing method of going on the pipe joint.

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