JP2003343765A - Joint device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint device for firmly connecting a pipe communicating with a faucet to a resin pipe. <P>SOLUTION: The joint device comprises a joint body 1 with a connection part 6 on the upstream side to be connected to the lowest downstream end of the resin pipe and a male screw 2 and female screw 3 on the downstream end, and a washer 16 with a larger shape than an opening 4 engaged with the outside of the female screw 2 of the joint body 1. The male screw 2 to which the washer 16 is attached is made to project from the opening 4, and the female screw 2 is connected to the faucet side with the washer 16 fixed to the upper surface F' of a floor body or to the front surface of a wall body. The male screw 2 has a flat plane part 2a in a part on the outer circumference. The washer 16 has such a size as to be engaged with the outside of the male screw, an attaching hole 15 in the shape corresponding to the flat plane part 2a, and a lock nut 24 to be engaged with the male screw 2. The lock nut 24 is engaged with the male screw 2 to be fixed, with the male screw 2 projecting from the opening 4. <P>COPYRIGHT: (C)2004,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint device. 2. Description of the Related Art At the time of piping for water supply and hot water supply, a water supply main pipe and a hot water supply main pipe from a hot water supply facility are drawn indoors.
The water supply main pipe and the hot water supply main pipe are respectively connected to a pipe header for water supply and a pipe header for hot water supply, and these headers are connected to respective water stopcocks located upstream of a hot / water mixer tap in a washroom, for example. A water supply pipe or hot water supply pipe made by inserting a resin pipe with excellent durability such as cross-linked polyethylene or cross-linked polybutene that is resistant to heat, hardly deforms, and does not rust, through a bellows-shaped sheath pipe Is used, so that in case of water leakage or the like, the resin pipe can be taken out from the inside of the sheath pipe by simply disconnecting both ends of the resin pipe while leaving the sheath pipe intact, which is convenient in that it can be replaced. . [0003] By the way, to connect a pipe leading to a water stopcock and a resin pipe, a tip of a resin pipe located immediately below the opening is pulled out by a predetermined length from an opening formed in the floor, and pulled out onto the floor. At the tip of the resin pipe, a joint for connection with a pipe leading to a water stopcock is connected, and a washer is screwed into a male screw of the joint, and then the male screw with the washer is projected from the opening. It is conceivable to fix the washer on the floor around the opening by returning the tip of the resin pipe together with the joint into the opening in the closed state. [0004] In this case, if a metal pipe is used as the pipe leading to the water stopcock, a nut or bolt on the metal pipe side is tightened to the male screw or female screw of the joint using a wrench. Since the joint is not located on the floor except for the male screw, the nut or bolt cannot be tightened while holding the joint, and when the nut or bolt is strongly tightened, the joint turns. Occurs. [0005] Such a problem also occurs when a resin pipe is drawn out from an opening formed in a wall. The present invention has been made in view of the above-mentioned matters, and an object of the present invention is to provide a joint device capable of firmly connecting a resin pipe and a pipe leading to a water faucet. [0007] In order to achieve the above object, the present invention provides a connecting part which is connected to the most downstream end of a resin pipe drawn out from an opening formed in a floor or a wall. A joint body having an upstream thread and having a male thread and a female thread at the downstream end, and a washer having a shape larger than the opening, which is externally fitted to the male thread of the joint body and attached, and the washer is attached. A joint device in which the male screw is made to protrude from the opening, and the female screw is connected to the faucet side in a state where the washer is fixed to a floor upper surface or a wall front surface around the opening, The male screw has a flat portion on a part of the outer periphery, and the washer has a size that can be externally fitted to the male screw, and has a mounting hole having a shape corresponding to the flat portion, In addition, the male screw A lock nut to be screwed is provided, and after the washer is externally fitted to the male screw, the lock nut is screwed to the male screw in a state where the male screw is projected from the opening, and then the female screw is placed on the faucet side. It is configured to connect. In the present invention, the wall includes a side wall and an upper wall such as a housing such as a faucet box installed on the floor, in addition to the wall. An embodiment of the present invention will be described below. 1 to 3 show one embodiment of the present invention. 1 to 3, reference numeral 1 denotes a joint main body. The joint body 1 has, on the upstream side, a connecting portion 6 connected to the most downstream end 5a of a resin pipe 5 drawn out from an opening 4 formed in a floor (floor body) F of a washroom, for example. A hexagonal portion 7 is provided between the connecting portions 6. The connecting portion 6 has an inner cylinder 9 and an outer cylinder 10 forming an annular groove 8 into which the most downstream end 5a of the resin pipe 5 is fitted. The outer cylinder 10 has a male screw 11 and the inner cylinder 9
Has a ring-shaped seal body 12 on the outer peripheral surface. Thirteen
Is a cap nut screwed into the male screw 11. Reference numeral 14 denotes a split ring for preventing loosening, which has a function of preventing loosening of the cap nut 7 when the cap nut 7 is tightened to the male screw 11 (see the specification and drawings of Japanese Patent Application No. 2001-280504). Reference numeral 14 denotes a split ring which is temporarily removed together with the cap nut 13 from the joint body 1 assembled at the time of shipment from the factory. After the cap nut 13 and the split ring 14 are inserted through the resin pipe 5 in this order, the resin pipe 5 is inserted into the annular groove 8, and the split ring 14 is pressed until it abuts against the end surface 10 a of the outer cylinder 10. Tighten the cap nut 13 by using. Thereby, the resin pipe 5 can be connected to the connection portion 6. The hexagonal portion 7 has a horizontal hole 7a, and is provided with a means for pushing the resin pipe 5 and projecting outward from the horizontal hole 7a, which serves as a guide for completing the resin pipe insertion operation. This means is a fitting member 19 composed of a cylindrical portion 17 having a size that fits into the lateral hole 7a and a conical portion (tip portion) 18 having a bottom surface having the same diameter as that of the cylindrical portion 17.
And a disk-shaped cap member 20 having the same diameter as the diameter of the cylindrical portion 17.
It is composed of The fitting member 19 and the cap member 20 are made of resin. The fitting member 19 is fitted into the lateral hole 7a so that the conical portion 18 is located in the annular groove 8, and the fitting member 19 is covered with the cap member 20 by fitting the cap member 20 into the lateral hole 7a. When the cap member is fitted, the surface of the cap member 20 is substantially flush with the surface of the hexagonal portion 7. Then, at the same time that the most downstream end 5a of the resin pipe 5 crosses the conical portion (tip portion) 18, the fitting member 19 moves outward along the lateral hole 7a together with the cap member 20, and as a result, the cap member 20 is moved from the lateral hole 7a. Jump out and fall. The drop of the cap member 20 is a measure of the end of the resin pipe insertion operation. It is preferable that the fitting member 19 and the cap member 20 have different colors. This is because the operator can easily confirm that the cap member 20 jumps out. Hereinafter, a characteristic configuration of the present invention will be described. The joint body 1 has a male screw 2 and a female screw 3 at the downstream end. The male screw 2 has a flat portion 2a on a part of the outer periphery. In this embodiment, two planar portions 2a are provided, and the planar portions 2a
It is disposed opposite to the outer periphery of the male screw 2 with a central angle of °. The male screw 2 has a mounting hole 15
A washer 16 having a shape larger than that of the opening 4 is externally fitted thereto. That is, the washer 16 is attached to the mounting hole 15.
The mounting hole 15 has a size that can be externally fitted to the male screw 2 and has flat portions 16a, 16a having a shape corresponding to the flat portions 2a, 2a. On the other hand, the female screw 3 is connected to a joint (shown) having a male screw using, for example, a wrench. The joint having the external thread is used, for example, to adjust the supply amount of water and / or hot water to be supplied to a faucet of a washstand provided in a washroom, or to stop the supply of water and / or hot water to the faucet. A water and / or hot water supply pipe (not shown) connected to the water stopcock is rotatably connected to an upstream end. Further, the washer 16 has a plurality of holes 23 through which screws 22 can be inserted so that the washer 16 can be fixed to the floor upper surface F 'around the opening 4. Reference numeral 24 denotes a lock nut screwed into the male screw 2 for preventing the joint body 1 from coming off from the washer 16 fixed to the floor upper surface F 'and dropping from the inside of the opening 4 below the floor.
That is, after the washer 16 is inserted into the male screw 2 through the mounting hole 15 and the male screw 2 is projected from the opening 3, the lock nut 24 is attached to the male screw 2.
And the washer 16 is screwed on the floor upper surface F ′.
Fixed at 2. As a result, the washer 16 is removed from the joint body 1.
Can be prevented from falling under the floor. The joint body 1, the washer 16, the screw 22 and the lock nut 24 constitute a joint device. As shown in FIG. 2A, after the cap nut 13 and the split ring 14 are inserted through the resin pipe 5 drawn out from the opening 4 formed in the floor F in this order, the annular groove 8 is formed.
Then, the resin pipe 5 is inserted, the split ring 14 is pressed until it hits the end face 10a of the outer cylinder 10, and the cap nut 13 is tightened using a tool. Thereby, the resin pipe 5 can be connected to the connection portion 6 (see FIG. 1). After the washer 16 is externally fitted on the male screw 2 on the floor, the lock nut 24 is screwed to the male screw 2 with the male screw 2 protruding from the opening 4, and the floor upper surface F ', The washer 16 is fixed with a screw 22 [see FIG. 2 (B)]. Subsequently, a joint (shown) having the male thread connected to the upstream end of the water and / or hot water supply pipe (not shown) is connected to the male screw 2 from above the female screw 3 on the floor. Then, a joint (shown) having the external thread is rotated using a wrench, for example. At this time, the joint body 1
The hexagonal part 7 cannot be held by the wrench because the hexagonal part 7 is located in the opening 4.
Mounting hole 15 for washer 16 fixed to floor top surface F '
When the wrench is rotated by contacting the planar portions 16a, 16a formed on the outer surface and the planar portions 2a, 2a formed on a part of the outer periphery of the male screw 2, the joint main body 1 can maintain the wrench or the washer 16 There is no co-rotation. Therefore, the joint body 1 does not rotate with the wrench or the washer 16 even if the wrench is strongly tightened.
Can be screwed firmly. The present invention can also be applied to a resin pipe drawn from an opening formed in a wall. According to the present invention, it is possible to provide a joint device capable of firmly connecting a resin pipe and a pipe leading to a faucet.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing an embodiment of the present invention. FIG. 2A is a configuration explanatory view showing a state before a resin pipe is inserted in the embodiment. (B) is a structural explanatory view showing an installation state on a floor in the above-mentioned embodiment. FIG. 3 is an exploded perspective view showing a resin pipe connection operation in the embodiment. [Description of Signs] 1 ... Joint body, 2 ... Male thread, 2a ... Planar part, 3 ... Female thread, 4 ... Opening, 5 ... Resin pipe, 5a ... Downstream end, 6
... Connection part, 15 mounting hole, 16 washer, 16a flat part, 24 lock nut, F floor.

Claims (1)

Claims: 1. A connecting part connected to the most downstream end of a resin pipe drawn out from an opening formed in a floor or a wall is provided on an upstream side, and a male screw and a female screw are provided at a downstream end. A joint body having, and a washer having a shape larger than the opening, which is attached to the external thread of the joint body so as to be fitted outside,
A joint in which the male screw to which the washer is attached is made to protrude from the opening, and the female screw is connected to the faucet side while the washer is fixed to the upper surface of the floor or the front surface of the wall around the opening. The male screw has a flat portion on a part of an outer circumference, and the washer has a size that can be externally fitted to the male screw and has a shape corresponding to the flat portion. A hole, and further comprising a lock nut screwed into the male screw, wherein the lock nut is screwed into the male screw in a state where the male screw is projected from the opening after the washer is fitted over the male screw. And a connecting device for connecting the female screw to the faucet side thereafter.