JP2000046247A - Coupling for piping - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coupling for a piping to eliminate a need to always prepare for two kinds of a cylindrical coupling and a cylindrical coupling with a flange and eliminate time and labor required for management of parts and dissolve a problem on a part storing space. SOLUTION: This coupling for a piping comprises a cylinder body 2 provided at an end part on the piping side with a male screw part 4 for piping connection and at an end part on the plug side with a female screw part 5 for faucet connection, a through-hole 8 fitted in the end part on the plug side of the cylinder body 2, and a disc-form flange body 3 having a plurality of through-holes for a screw. A fit-in protrusion part 7 is formed on the outer periphery of the end part on the plug side of the cylinder body 2 and a fit-in recessed part 10 fitted therein to prevent the occurrence of relative rotation between the cylinder body 2 and the flange body 3 is formed in the inner periphery of the flange body 3. The fit-in protrusion part 7 is tightly fitted in the fit-in recessed part 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joint used for connecting a water faucet (including a hot-water mixing faucet) to a pipe end through a through hole in a wall.

[0002]

2. Description of the Related Art A faucet is attached to a pipe end when the wall is made of concrete and the pipe end is fixed to the wall, or when a wall is made of a plaster board and the hole is made in the pipe end and the wall. The piping joint used differs between the case where there is a gap and the case.

In the former case, a cylindrical joint having a male thread for pipe connection at the end on the pipe side and a female thread for faucet connection at the end on the plug side is used. The female tap is attached to the pipe end by screwing the male thread at the plug end into the female thread of the joint. In the case of the latter, if the same as the former, the fitting of the through-hole in the wall and the pipe end alone cannot fix the pipe end, and the malfunction that the faucet moves with the pipe may occur. A flange having a plurality of screw through holes at an end of the plug side is provided integrally with a male screw portion for connecting a pipe at an end on the side of the pipe, and a female screw portion for connecting a faucet at an end of the tap side. A cylindrical joint with a flange is used.The male thread for pipe connection of this joint is screwed into the female thread at the pipe end, and the flange is screwed to the edge of the through-hole for faucet connection on the wall to form a pipe. The end is fixed to the wall via a cylindrical joint with a flange, and in this state, the external thread of the joint is screwed into the internal thread of the pipe end, and the external thread of the plug end is inserted into the internal thread of this joint. Screwed into the pipe end Faucet is attached.

Therefore, a pipe operator always prepares two types of cylindrical joints and a cylindrical joint with a flange, and confirms the material of the wall and whether the pipe end is fixed to the wall. Thus, a faucet was attached using one of the joints.

[0005]

As described above, the necessity of always preparing two types of cylindrical joints, ie, cylindrical joints and flanged cylindrical joints, requires time and labor for parts management. Because there is a lot of storage space,
The improvement was requested.

SUMMARY OF THE INVENTION It is an object of the present invention to eliminate the need to always prepare two types of cylindrical joints and cylindrical joints with flanges, and to reduce the trouble of parts management and the problem of space for storing parts. It is to provide a joint for use.

[0007]

A pipe joint according to the present invention is used for connecting a faucet to a pipe end through a through hole in a wall, and is provided with a pipe connecting end at a pipe side. The male screw portion includes a cylindrical body having a female screw portion for connecting a faucet at an end on the plug side, and a flange body having a through hole and a plurality of through holes for screws to be fitted to the end on the plug side of the cylindrical body. The fitting protrusion is fitted to one of the outer periphery of the plug-side end of the cylindrical body and the inner periphery of the flange body, and the cylindrical body and the flange body are relatively fitted to the other, so that the cylindrical body and the flange body are relatively rotated. It is characterized in that a fitting recess is provided for prevention.

[0008] The flange body is usually disc-shaped,
It may be a hexagonal or dodecagonal plate.

This piping joint is used when the wall is made of, for example, gypsum board and there is a gap between a pipe end and a hole formed in the wall. If the wall is, for example, concrete and the pipe end is fixed to the wall, only the cylinder is used. The pipe operator prepares a cylinder and a flange body, respectively, and uses only the cylinder, or uses this pipe joint in which the flange is fitted to the cylinder, depending on the situation at the site. You just have to select

It is preferable that the fitting projection is tightly fitted into the fitting recess. In this case, the effect of preventing the relative rotation of the cylindrical body and the flange body is large, and the attachment of the faucet to the end of the pipe becomes firm.

[0011] Such a pipe joint comprises a holding means for holding the cylindrical body so as to be able to move back and forth, and for preventing the rearward movement of the flange body fitted and covered with the cylindrical body; And a pressing means for pressing rearward until it coincides with the front side surface of the body.

The cylindrical body and the flange body are preferably made of materials having different hardnesses, for example, the cylindrical body is made of brass and the flange body is made of copper.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. In the following description, the left of FIGS. 1, 3 and 5 is referred to as front, and the right is referred to as rear.

Pipe joint (1) shown in FIGS. 1 to 3
Is used to connect the pipe end and the faucet through the through hole in the wall, and is made of a brass cylindrical body (2) and a disc-shaped copper flange body (3) fitted thereto. Become.

At the outer periphery of the rear end (end on the pipe side) of the cylindrical body (2), there is provided an external thread portion (4) for pipe connection, and at the inner end of the front end (end on the plug side), A female thread (5) for connecting a faucet is provided. The outer diameter of the male thread (4) is equal to the inner diameter of the female thread (5), and the inner circumference of the male thread (4) has
There is provided an engaging portion (6) having a dodecagonal cross section into which a spanner for screwing the male screw portion (4) into the female screw portion at the pipe end is fitted. On the outer periphery of the front end of the cylindrical body (2),
(7) are provided at an interval of 180 °. The outer peripheral surface of the fitting convex portion (7) is continuous with the outer peripheral surface of the cylindrical body (2) via the inclined surface, and the radial cross-sectional shape of the fitting convex portion (7) is such that the length of the base is rearward. It has an isosceles trapezoidal shape that gradually decreases as it goes.

At the center of the flange body (3), a cylindrical body (2)
A through-hole (8) with a diameter slightly larger than the outer shape is provided. Around the periphery of the flange body (3), three through holes (9) for screws are formed. On the inner peripheral surface of the flange body (3), fitting recesses (10) tightly fitted to the fitting projections (7) of the cylindrical body (2) are provided at 180 ° intervals. .

As shown in FIGS. 4 and 5 (a), the fitting recess before the flange body (3) is fitted to the cylindrical body (2).
(10) has a rectangular cross section in the radial direction, and is formed so as to extend in the axial direction with the same cross section. On the other hand, the fitting projection (7) before the flange body (3) is fitted to the cylindrical body (2)
As shown in FIG. 5B, the radial cross-sectional shape of the trapezoid at the rear end (maximum area portion) of the truncated trapezoid has a fitting recess.
It is slightly wider than the width of (10). At the front end of the relatively hard brass cylindrical body (2) having the above-mentioned fitting projection (7), a relatively soft copper flange body (3) having the above-described fitting recess (10) is provided. As shown in FIG. 2, the fitting recess (10) of the flange body (3) is forcibly fitted by using a piping joint forming apparatus described later.
Deformed along the fitting projection (7) of the fitting, the fitting projection (7) is tightly fitted into the fitting recess (10), and the flange body (3) comes off from the cylindrical body (2). Is reliably prevented.

In the above embodiment, the fitting protrusion (7)
Are tightly fitted in the fitting recesses (10), but if the cylindrical body and the flange body prevent relative rotation, the fitting protrusions and the fitting recesses fit loosely. It may match. Further, the cylindrical body (2) is not limited to brass, the flange body (3) is not limited to copper, and both may be made of the same material.

The pipe joint (1) is used when the wall is made of, for example, gypsum board and there is a gap between a pipe end and a hole formed in the wall. The pipe operator prepares the cylinder (2) and the flange (3), respectively, and uses only the cylinder (2) or forces it to the cylinder (2) depending on the situation at the site. The above-mentioned piping joint with a flange body (3)
Select whether to use (1). Therefore, the cylindrical body (2)
The fitting of the fitting projection (7) with the fitting recess (10) of the flange body (3) needs to be performed on site. FIGS. 6 to 8 show an apparatus for forming the pipe joint (1) by forcibly fitting the cylindrical body (2) and the flange body (3).

As shown in FIG.
1) is a long rectangular board (12) and a flange body (3)
A rectangular parallelepiped joint holder (13) that holds the cylindrical body (2) with the
2) A stopper (14) provided at the rear end to prevent the joint holder (13) from moving rearward, and a cylinder (2) supported by the joint holder (13) pressed rearward. Pressing body (15) and pressing body (1
And an operation lever (16) for moving the 5) back and forth.

The joint holding body (13) has a through hole (17) extending before and after a diameter slightly larger than the diameter of the cylindrical body (2),
Its front and rear length is smaller than the length of the cylindrical body (2).

The stopper (14) is L-shaped, and its horizontal wall (14a) is screwed to the substrate (12), and its vertical wall (1
The front surface of 4b) comes into contact with the rear surface of the joint holder (13). The vertical wall (14b) of the stopper (14) has a through hole (1) extending in front and rear of a diameter slightly larger than the diameter of the cylindrical body (2).
8) is provided. Further, a vertical reinforcing wall portion (19) is provided on the left and right edges of the vertical wall portion (14b).

The pressing body (15) comprises a horizontal shaft (15a) and a vertical plate (15b) provided at the rear end of the horizontal shaft (15a).
Near the front end of 5a) is slidably fitted into a horizontal tubular guide (20) fixed to the substrate (12). Horizontal shaft (1
The axis of 5a) is adjusted to be concentric with the axis of the cylindrical body (2). The vertical plate (15b) is formed larger than the cross section of the cylindrical body (2), and the pressing body (15) has the front end face of the cylindrical body (2) coinciding with the front side face of the flange body (3). Can be pushed backwards.

The operation lever (16) has a vertical shape, and its lower end is provided at a lever support (21) provided at the front of the substrate (12).
It is supported swingably. The lever support (21) has a substantially horizontal plate shape and is screwed to the substrate (12). A rising portion (21a) is provided at the front end of the lever support portion (21), and the lower end of the operation lever (16) is a pair of left and right support brackets (2).
It is attached to this rising portion (21a) via 2). The upper part of the support bracket (22) and the operation lever (16) are fixed by rivets (23), and the rising part of the lever support part (21)
(21a) and the lower end of the support fitting (22) are connected by a horizontal support pin (24) so as to be rotatable with respect to each other. Thus, the operation lever (16) can swing about the axis extending to the left and right of the horizontal support pin (24). Horizontal support pin
The height of the shaft of (24) is slightly lower than the height of the shaft of the cylindrical body (2).

A portion slightly lower than the center of the height of the support fitting (22) is connected to the horizontal shaft portion (15a) of the pressing body (15) through a pair of left and right connection fittings (25) in a U shape. It is connected to the front end. Combination of supporting bracket (22) and connecting bracket (25) and pressing body
The connection between the horizontal shaft portion (15a) and the connection fitting (25) in (15) is performed so that both can be rotated by the horizontal connection pin (26), and the operation lever (16) is moved vertically. When the operation lever (16) is tilted backward from
Rotates about the axis of the horizontal support pin (24) as a fulcrum, and the U-shaped connecting metal fitting (25) moves as a whole rearward while rotating about the axis of the horizontal connecting pin (26). The body (15) is moved backward.

The force applied to the operating lever (16) is (the length of the operating lever (16)) ÷ (the distance between the horizontal connecting pins (26)).
× (the angle between the length direction of the operating lever (16) and the line connecting the horizontal connecting pins (26)) is amplified by the amplification factor, and the pressing body (15)
Can strongly press the cylindrical body (2). As a result, the cylindrical body (2) moves backward, and the flange body (3) is prevented from moving backward by the vertical wall portion (14b) of the stopper (14). Recess (10) is cylindrical body (2)
Deform along the mating projection (7) of the
(2) is fitted to the flange body (3). In this way, the front end face of the cylindrical body (2) and the front side face of the flange body (3) are flush with each other, and the flange body (3) is reliably prevented from coming off the cylindrical body (2). (1) is formed.
The front edge of the through hole (17) of the joint holder (13) has a recess (27) for receiving the rear edge of the fitting projection (7) of the pressed cylinder (2). Is provided.

In the pipe joint forming apparatus (11), the cylindrical body (2) is held movably back and forth by the joint holder (13) and the stopper (14), and the flange body fitted to the cylindrical body (2). Holding means for preventing backward movement of (3), a pressing body (15), an operation lever (16), and a support bracket
A pressing means for pressing the cylindrical body (2) backward until the front end face of the cylindrical body (2) coincides with the front side surface of the flange body (3) is formed by the (22) and the connecting fitting (25). In addition, the joint holder (13)
Is detachable, which makes the work easier.However, the joint holder (13) and the stopper (14)
It may be integrally formed and fixed to the substrate (12). Further, the pressing means is not limited to the above configuration.

[0028]

According to the pipe joint of the present invention, a pipe operator prepares a cylindrical body and a flange body respectively, and uses only the cylindrical body or the cylindrical body depending on the situation at the site. Since it is only necessary to select whether to use this piping joint in which a flange body is fitted, there is no need to always prepare two types of a cylindrical joint and a cylindrical joint with a flange as in the past, The trouble of parts management and the problem of parts storage space can be improved.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view showing a piping joint according to the present invention.

FIG. 2 is a front view in which the same part is cut away.

FIG. 3 is a longitudinal sectional view of the same.

FIG. 4 is a front view of a flange body.

FIG. 5 is an enlarged front view showing a flange body (a) and a cylindrical body (b).

FIG. 6 is a side view of the pipe joint forming apparatus.

FIG. 7 is a plan view of the same.

8 is a sectional view taken along the line VIII-VIII in FIG.

[Explanation of symbols]

 (1) Piping joint (2) Cylindrical body (3) Flange body (4) Male thread for pipe connection (5) Female thread for faucet connection (7) Mating protrusion (10) Mating recess

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[Procedure amendment]

[Submission date] May 18, 1999 (1999.5.1
8)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

[0007]

A pipe joint according to the present invention is used for connecting a faucet to a pipe end through a through hole in a wall, and is provided with a pipe connecting end at a pipe side. A male body having a female body for connecting a faucet at the end on the plug side, and a flange body having a through hole and a plurality of through holes for screws fitted to the end on the plug side of the cylindrical body. in br /> such that joint, the fitting convex portion to one of the inner periphery of the circular cylinder plug side end periphery and the flange body of the cylindrical body and the flange member is fitted to the same other There is fitting recess is provided to prevent the relative rotation, the fitting
The protrusion and the fitting recess are forcibly fitted.
The fitting projection is tightly fitted in the fitting recess .

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

[0010] The cylindrical body and the flange body are different in hardness from each other.
The outer peripheral surface of the fitting projection is inclined
Through the outer surface of the cylindrical body
The radial cross-sectional shape of the fitting recess before fitting is the same
Extending in the radial direction before fitting.
The surface shape is such that the width at the end on the plug side is larger than the width of the fitting recess.
Wide, gradually narrowing as it approaches the pipe end
It is preferred that it is.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction contents]

The cylindrical body and the flange body are mutually different in hardness.
That in the material, for example a cylindrical body made of brass, may be flange body made of copper.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction contents]

As shown in FIGS. 4 and 5 (a), the fitting recess before the flange body (3) is fitted to the cylindrical body (2).
(10) has a rectangular cross section in the radial direction, and is formed so as to extend in the axial direction with the same cross section. On the other hand, the fitting projection (7) before the flange body (3) is fitted to the cylindrical body (2)
As shown in FIG. 5B, the radial cross-sectional shape of the truncated trapezoid at the front end (maximum area portion) of the fitting concave portion
It is slightly wider than the width of (10). At the front end of the relatively hard brass cylindrical body (2) having the above-mentioned fitting projection (7), a relatively soft copper flange body (3) having the above-described fitting recess (10) is provided. As shown in FIG. 2, the fitting recess (10) of the flange body (3) is forcibly fitted by using a piping joint forming apparatus described later.
Deformed along the fitting projection (7) of the fitting, the fitting projection (7) is tightly fitted into the fitting recess (10), and the flange body (3) comes off from the cylindrical body (2). Is reliably prevented.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction contents]

[0018] In the above embodiment, the circular cylindrical body
(2) is not limited to brass, flange body (3)
Is not the name include, but are limited to copper.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0028

[Correction method] Change

[Correction contents]

[0028]

According to the pipe joint of the present invention, a pipe operator prepares a cylindrical body and a flange body respectively, and uses only the cylindrical body or the cylindrical body depending on the situation at the site. Since it is only necessary to select whether to use this piping joint in which a flange body is fitted, there is no need to always prepare two types of a cylindrical joint and a cylindrical joint with a flange as in the past, The trouble of parts management and the problem of parts storage space can be improved. In addition, the fitting projection is
Since it is tightly fitted into the
The body is prevented from falling out.

Claims (3)

[Claims] A joint used for connecting a water faucet to a pipe end through a through hole in a wall, wherein a male pipe part (4) for pipe connection is provided at a pipe-side end, and a plug-side end is provided. A cylindrical body (2) having a female thread part (5) for connecting a faucet, a through-hole (8) fitted to the end of the cylindrical body (2) on the plug side, and a plurality of through-holes for screws (9). With a flange body (3)
A fitting projection (7) is fitted into one of the outer periphery of the plug-side end of (2) and the inner periphery of the flange body (3), and is fitted into the other of the fitting body and the cylindrical body (2) and the flange body. (3) A piping joint provided with a fitting concave portion (10) for preventing relative rotation of the pipe and the base. 2. The piping joint according to claim 1, wherein the fitting projection (7) is tightly fitted into the fitting recess (10). 3. An apparatus for forming a joint for piping according to claim 2, wherein the flange body (3) fitted to the cylindrical body (2) while holding the cylindrical body (2) movably back and forth. A pipe joint forming apparatus, comprising: holding means for preventing backward movement; and pressing means for pressing the cylindrical body (2) rearward until its front end face coincides with the front side surface of the flange body (3).