JP4157200B2 - Wall piping structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure for easily attaching a pipe to a wall surface when a faucet pipe is provided on the wall surface, and particularly relates to a technique effective when providing a pipe penetrating through a wall surface of a bathroom.
[0002]
[Prior art]
Conventionally, pipes for faucets that pass through the walls of bathrooms, etc., are passed through adapters through the holes provided in the walls, and flanges for fixing pipes are aligned from both sides with the wall as the boundary. The work of tightening the other while supporting so as not to rotate was performed. However, since this work is difficult to perform by one person, one person must support one and the other must be tightened by another worker for secure fixing. Moreover, since it is necessary to attach piping to the both ends of an adapter, there existed a problem in terms of workability.
[0003]
As a technique for solving this problem, Japanese Patent Application Laid-Open No. 9-287178 discloses a technique in which a socket having a flange portion is fixed with a fixing nut and a tightening nut with a partition wall interposed therebetween, and a flexible pipe is fixed with a ring.
[0004]
[Problems to be solved by the invention]
However, in the above-described prior art, the number of parts is relatively large, and it is necessary to disassemble the parts once, so there is a risk that the disjointed parts may be lost. In the first embodiment, the work cannot be performed from only one side of the wall surface. Furthermore, although it is possible to work from one side of the wall surface also in the second embodiment, there is a problem that when the tightening nut is tightened too much, the ring functioning as the packing is deformed too much.
[0005]
In the present invention, unlike the above-described conventional example, the number of parts is relatively reduced, and at the same time, there is no need to separate the parts, and it is possible to work from only one side of the wall surface while using the assembled state. An object of the present invention is to disclose a wall surface pipe structure that can be fixed with a sufficient holding force.
[0006]
[Means for Solving the Problems]
In the present invention, in order to achieve the above object, a flange having an outer diameter larger than a through-hole provided in a wall surface, an outer diameter smaller than the through-hole, a pipe insertion hole provided therein, An inner pipe that has a constricted part in the diameter-reducing direction and a bulging part in the diameter-expanding direction at the end and is provided with an outer screw on the outer periphery of the other end and combined through the flange, A fastening nut that is screwed onto an outer screw, an outer seal ring that is inserted through the outer periphery of the inner tube, and an inner seal ring that is inserted between the inner periphery and the pipe are used. And means for deforming the two seal rings between the flange, the narrowed portion, and the bulging portion according to tightening of the tightening nut, bringing the outer seal ring into contact with the wall surface and the inner seal ring into contact with the pipe. Using. With this means, the outer diameter of the inner tube is smaller than that of the through hole, so that work from one side of the wall surface can be performed. The throttle part and the bulging part are provided with a function for deforming the seal ring, and the seal ring is deformed between the flange and the flange by tightening a tightening nut. And this fixes an apparatus to a wall surface.
[0007]
Further, as a combined structure of the flange and the inner pipe, a slit is formed in the longitudinal direction from the outer thread side of the inner pipe, and an insertion portion corresponding to the cross-sectional shape of the inner pipe including the slit is formed in the flange. The means for inserting the inner tube through the flange through the insertion portion was used. This avoids co-rotation of the inner pipe when the tightening nut is tightened.
[0008]
Furthermore, the outer thread side end face of the bulge part is extended to a direction closer to the flange than the outer thread side end face of the throttle part, and the outer seal ring is first deformed to fix the apparatus to the wall surface in advance. I am going to let you.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an example of a preferred embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a cross-sectional view showing a pipe structure according to the present invention applied to a wall surface. 1 is a wall surface, 2 is a through hole provided in the wall surface 1, and a flexible tube 3 is fixed to this portion. Although known joints 4 and 5 are provided at both ends of the flexible tube 3, it is not an essential element of the present invention. Reference numeral 6 denotes a flange having an outer diameter larger than the diameter of the through hole 2 and an inner diameter smaller than the diameter, and reference numeral 7 denotes an inner pipe through which the flexible pipe 3 is inserted. It is. As a specific structure of the inner tube 7, an outer screw 8 is provided at one end, and at the other end, a throttle portion 9 is integrally provided in the inner diameter direction, and a bulging portion 10 is provided integrally in the outer diameter direction. The inner diameter of the throttle portion 9 substantially matches the diameter of the flexible tube 3. Further, the width of the narrowed portion 9 is set to be narrower than the width of the bulged portion 10, and as a result, the inner end 10 a of the bulged portion 10 is longer than the inner end 9 a of the narrowed portion 9 in the longitudinal direction. It extends to the inside. A tightening nut 11 is screwed into the outer screw 8 of the inner tube 7.
[0010]
The flexible tube 3 is fixed to the wall surface 1 by the above configuration, and two seal rings are used for fixing. That is, 12 is an outer seal ring and 13 is an inner seal ring, which are fixed in a watertight and firm manner by deforming them. That is, the inner tube 7 and the inner periphery of the through hole 2 are fixed by the deformation of the outer seal ring 12, and the inner tube 7 and the flexible tube 3 are fixed by the deformation of the inner seal ring 13.
[0011]
In the above configuration, the relationship between the flange 6 and the inner pipe 7 is more clearly described in FIG. FIG. 2 shows the relationship between the flange 6, the inner tube 7, and the tightening nut 11 with the wall surface omitted. The inner tube 7 includes a portion in which the outer screw 8 is cut and includes two pieces in the longitudinal direction. Slits 20 are provided facing each other, and the flange 6 is provided with insertion portions 21a and 21b having the same shape as the AA cross section of the inner tube 7, leaving portions corresponding to the slits 20. Therefore, the inner tube 7 can be combined with the flange 6 through the insertion portions 21a and 21b by the slit length. In addition, although the through-hole 6a provided in the flange is used as a screw hole when the flange 6 needs to be fixed to the wall surface 1, the flange 6 must be fixed to the wall surface 1 with a screw or the like. It's not that. That is, if a surface pressure is applied to the flange 6, positioning is possible, and the use of the through hole 6a may be omitted.
[0012]
If the tightening nut 11 is tightened in this combined state, the inner tube 7 is pulled relative to the flange 6. As shown in FIG. 1, the flexible tube 3 is inserted into the through hole 2 from the right side of the wall surface 1 in a state of being inserted through the inner tube 7. In this case, since the maximum diameter of the inner tube 7 is set smaller than the diameter of the through hole 2, the inner tube 7 easily protrudes to the left side of the wall surface 1 without interfering with the through hole 2. Then, the outer seal ring 12 and the inner seal ring 13 are positioned on the inner periphery of the through hole 2 and the flange 6 is pressed against the right wall surface. Next, when the tightening nut 11 is tightened in this state, the flange 6 is pressed against the wall surface, so that the inner tube 7 is moved in the direction of pulling in the through hole 2 side according to the tightening. Then, since the inner end 9a of the bulging portion of the inner tube 7 contacts the outer seal ring 12 sooner than the inner end 10a of the throttle portion contacts the inner seal ring 13, the outer reel ring 12 is deformed first, and the inside of the through hole 2 The inner pipe 7 is fixed so as not to easily come off on the right side of the wall surface. Subsequently, when the tightening nut 11 is further rotated, the inner end 9a of the throttle portion 9 hits the inner seal ring 13, so that it is deformed and bites around the flexible tube 3. In this way, secure fixing and sealing of the flexible tube are completed at the same time.
[0013]
FIG. 3 shows the device viewed from the right side with respect to the wall surface, that is, from the opposite side to FIG. 2, and shows a state immediately before the inner tube 7 is inserted into the through hole 2. As is apparent from the drawing, the inner tube 7 is combined with the flange 6, and the rotation of the inner tube 7 is restricted with respect to the flange 6. Therefore, the inner tube 7 can be reliably pulled in as much as the tightening nut 11 is tightened.
[0014]
In addition, about the position of the narrow part 9 provided in the inner pipe 7, and the position of the inner side of the bulging part 10, in this embodiment, the bulging part 10 side is made to approach further inside. It is planned to fix to the wall surface and subsequently fix the flexible tube. Alternatively, the positional relationship between the inner ends 9a and 10a may be matched so that the two seal rings 12 and 13 are fixed simultaneously. On the contrary, in order to fix the flexible tube 3 first, the inner end 9a on the narrowed portion 9 side can be preceded.
[0015]
By the way, when the tightening nut 11 is rotated to retract the inner tube 7, if the slit 20 is deeply cut in the longitudinal direction of the inner tube 7, the seal ring 12 is brought into contact before the bottom 20 a of the slit 20 hits the flange 6. And 13 will be crushed and the packing function will be hindered. Therefore, in order to avoid this, it is preferable to set the slit depth so that the seal rings 12 and 13 are appropriately deformed in a state where the bottom 20a is in contact with the flange 6.
[0016]
Next, FIG. 4 shows another embodiment of the present invention, where 1 is a wall surface, 2 is a through hole provided in the wall surface 1, 3 is a flexible tube, and these are different from the previous embodiment. Absent. Next, 40 is a flange, 41 is a cylinder integrally protruding from the flange 40, and the outer periphery is threaded. An insertion ring 42 is accommodated between the inner periphery of the cylinder 41 and the flexible tube 3. Reference numeral 43 denotes a cap nut that can be screwed into a screw of the cylinder 41. 44 is an outer seal ring positioned between the through hole 2 and the cylinder 41, and 45 is an inner seal ring positioned between the cylinder 41 and the flexible tube 3. The cap nut inner surface of the cap nut 43 is in contact with the insertion ring 42.
[0017]
Here, in order to fix these to the wall surface, first, the flange 40 hits the wall surface from the right side of the wall surface with the flange 40, the insertion ring 42, the cap nut 43, and the two seal rings 44, 45 being inserted into the flexible tube 3. The device is inserted through the through-hole 2 until. Thereafter, when the cap nut 43 is tightened, the outer seal ring 44 is deformed at the tip of the cap nut 43 to fix the outer periphery of the cylinder 41 to the inner periphery of the through hole 2, and then the cap nut 43 pushes the insertion ring 42. As a result, the inner seal ring 45 is deformed to fix the outer periphery of the flexible tube 3 and the inner periphery of the cylinder 41, and the device is securely attached by these. As to the point of deforming the outer seal ring 44 and the inner seal ring 45, it is possible to appropriately select which one precedes as in the first embodiment.
[0018]
【The invention's effect】
In the structure of the present invention, the device is only inserted from one side of the wall surface, and the flange and the throttle part or The seal ring can be deformed between the bulging portions, and the pipe can be fixed to the wall surface reliably and easily. In addition, the slit is formed in the longitudinal direction from the outer thread side of the inner tube, and the flange is provided with an insertion portion corresponding to the cross-sectional shape of the inner tube including the slit, and the flange and Since it is combined with the inner pipe, more reliable co-rotation can be prevented. Furthermore, the outer seal ring is deformed first by extending the outer thread side end face of the bulging part closer to the flange than the outer thread side end face of the throttle part. As a result, the piping was fixed, and the fixing position could be easily determined.
[0019]
Furthermore, in the structure of the present invention, it is not necessary to disassemble the parts when attaching to the wall surface, and since the structure is inserted into the through-hole in the assembled state, it is possible to reliably avoid inconveniences such as losing the parts during work. Can now.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a preferred embodiment of the present invention. FIG. 2 is a perspective view of the same. FIG. 3 is a perspective view of the same viewed from another direction. Explanation of]
DESCRIPTION OF SYMBOLS 1 Wall surface 2 Through-hole 3 Flexible pipe 4 Joint 5 Joint 6 Flange 6a Through-hole 7 Inner pipe 8 Outer screw 9 Restriction part 9a Inner end 10 Swelling part 10a Inner end 11 Tightening nut 12 Outer seal ring 13 Inner seal ring 20 Slit 21a 21b insertion part 40 flange 41 cylinder 42 insertion ring 43 cap nut 44 outer seal ring 45 inner seal ring

Claims (3)

A flange having an outer diameter larger than the through-hole provided in the wall surface, an outer diameter smaller than the through-hole, having an insertion hole for piping inside, and a constricted portion in the reduced diameter direction at one end; An inner pipe having an bulging portion in the diameter-expanding direction and having an outer thread on the outer periphery of the other end and being combined through the flange; a tightening nut screwed into the outer thread of the inner pipe; An outer seal ring inserted into the outer periphery of the inner pipe and an inner seal ring inserted between the inner periphery and the pipe, and between the flange, the throttle portion, and the bulging portion according to tightening of the tightening nut A wall surface pipe structure characterized in that the two seal rings are deformed and the outer seal ring is brought into contact with the wall surface and the inner seal ring is brought into contact with the pipe. The slit is formed in the longitudinal direction from the outer thread side of the inner tube, and the flange is provided with an insertion portion corresponding to the cross-sectional shape of the inner tube including the slit, and the flange and the inner tube are inserted through the insertion portion. The wall surface piping structure according to claim 1, wherein The wall surface piping structure according to claim 1 or 2, wherein an outer screw side end surface of the bulging portion is extended to a direction closer to the flange than an outer screw side end surface of the throttle portion.

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