JPS58166188A - Sealing device for tilt pipe - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is capable of penetrating a wall 62 times outdoors and
2. A device for sealing a pipe installed diagonally in the opposite direction (2).Special C2 is a suitable device for rain closures (= suitable) for exhaust pipes, intake/exhaust pipes, or sleeves for these.

This type of conventional sealing device is the sleeve C of the intake and exhaust pipe.
2 Application case (There are two, Fig. 1 and Fig. 2 ζ: This will be explained further. 1 is a sleeve for installing the intake and exhaust pipe 2, and it is inserted from the indoor 4 side of the hole 3aC that penetrates the wall 3 of the house.) It protrudes to the outdoor 5 side.

The sleeve 1 is fixed to the wall 3 at the flange 1a on the indoor side with screws (not shown). Further, the height of the flange 1a is higher at the bottom than at the top so that the sleeve 1 is inclined downward at an angle θ toward the outdoor side 5.

The intake and exhaust pipe 2 is a double pipe, and has an intake port 2a and an exhaust port 2b for connecting to a combustion appliance (not shown) on the indoor 4 side, and an outdoor air port 2C and an exhaust port 2d on the outdoor 5 side. There is. The intake and exhaust pipe 2 is fixed to the flange 1a via a flange 2e with screws (not shown). Therefore, the intake and exhaust pipes 2 are also attached downward at an angle of θ.

Further, the sleeve 1 is provided with a male round thread. 6
is a seal that seals between the outdoor 5 side of the wall 1 and the sleeve 1, and its height is higher at the bottom than at the top. It is, so to speak, trapezoidal. 7 is a washer, and 8 is a set screw, which is screwed into the sleeve to press the washer 7 and seal between the wall 3 and the sleeve 1. The cap screw 8 is made of sheet metal, and its outer periphery is shaped like a polygon so that it can be turned by hand.

Further, the contact portion with the washer 7 is curled. Further, the inner peripheral portion 8a is formed to have a female thread that engages with the male thread. The inner diameter of the inner peripheral portion 8a is larger than the root diameter of the male screw by a normal size.

As described above, by installing the valve downward at the angle of VC, it is possible to discharge condensate in the combustion gas generated in the exhaust pipe to the outside, and prevent rainwater from entering indoors from the intake pipe, exhaust pipe, or sleeve. I'm going. And here, wall 3 and sleeve 1
Focusing on the rain cover in between, since the sleeve 1 is attached downward at an angle of A shaped packing must be used, which is more expensive than a flat packing.

Further, when installing the gasket 6, care must be taken in the vertical direction, which makes the installation work troublesome.

It is also conceivable to make the washer 7 trapezoidal with an angle of θ, but this has the same drawbacks as described above.

In addition, in FIG. 2, only the outer shape of the cross section of the male thread of the sleeve 1 is shown. The male threads are shown in the same way in other figures.

SUMMARY OF THE INVENTION An object of the present invention is to provide a structure that can seal between a threaded pipe and a wall at low cost.

The present invention uses a packing and a seat that have substantially no angle, and by tightening a pusher, at least the packing and the seat can be set so that the angle of inclination of the pipe is slanted with respect to the pipe. It is something that

The present invention will be explained below with reference to an embodiment shown in FIGS. 3 to 5. It is a pipe whose outer surface has a male round thread, and is installed at an angle of θ toward the downward direction on the outdoor side. The pipe 10 is a sleeve 1, an intake pipe, an exhaust pipe or other pipe. 1] is a flat packing, with a 12-inch seat, and a ring 1 with a height that controls the tightening allowance of the packing 11.
2a on the outer periphery. The height from the hole 12b to the tip of the link 12a is the same for each part. The periphery of the hole 12b is tapered. 13 is a holding screw, and the small diameter portion 13
Convex part 13b for female thread provided in H, small diameter part 13a, hemispherical part 13C1 with a larger diameter, maximum diameter part 13d, convex part 13e
, the small diameter portion 13f is constructed sequentially from the indoor side 4. The convex portion 13b is provided approximately one circumference of the screw. Hemispherical part 13C
The center of the hemisphere is located over the center of the pipe. The dimensions of this hemispherical portion 13C are such that the seat 12 is inclined at an installation angle θ with respect to the cap screw 13, that is, the pipe 10, as will be described later. The diameter of the hole 12b of the seat 12 is the small diameter portion 13a.
and the maximum diameter part of the hemispherical shape 513C. The holding screw 13 is provided by expanding the entire pipe by bulge processing, or by expanding the pipe except for the convex part 13b, and then attaching the convex part 13.
b is provided using a lathe or the like.

In such a configuration, when the convex portion 13C is used to tighten the presser screw 13, the cap and kin 11 first come out as shown in FIG.
The lower part of contacts the wall 3. Further tighten the cap screw 13.
As the seat 12 is moved in, the seat 12 moves along the hemispherical portion 13C along l'. That is, as shown in the imaginary line in FIG.
Since it can be moved to the d side and the mounting angle θ can be tilted, the cap screw 3 can be further tightened. still,
The hole diameter of the packing 11 is sufficiently larger than the diameter of the pipe 10, or it has flexibility. Therefore, the gasket 11 also moves together with the seat 12, as shown in FIG. 4, and the space between the wall 32 and the pipe 10 is sealed, making it possible to shut off the rain. Since the cap screw [3] with which the hole 12b comes into contact is the hemispherical portion 13C, the two are in close contact with each other and are completely protected against rain.

As described above, the gasket 11 and the seat 12 can be made with the same height at the upper and lower parts, making it possible to reduce the cost, and since there is no installation direction, the work can be simplified. Further, since the holding screw 13 can be easily formed from a pipe by expanding the pipe, it can be made much cheaper than the conventional one. In addition, the diameter of the convex portion 13C on which the hold screw 130 is placed is sufficiently smaller than that of the prior art, making it very easy to rotate.

A specific example of the above-mentioned embodiment will be explained. The diameter of the hole 12b of the seat 12: 64M, and the diameter of the small diameter portion of the holding screw 13: 6Lmm.

The diameter of the maximum diameter portion 13d of the holding screw 13 is 55 mm, -m. The spherical diameter of the hemispherical portion 12C is 325 mm.

An embodiment shown in FIGS. 6 to 8 will be described. Holder screw 1
5 is almost the same as the conventional cap screw 8, and has a curled portion 15a1 on the outer periphery, a recessed portion 15b for placing the hand, and a female thread k.
It has a claw 15C. The inner diameter of the female screw by the claw 15C is set to be about halfway between the crest diameter and the root diameter of the male screw. The tip of the claw 15C is provided by closely bending the end, but its thickness is smaller than the width of the valley of the male thread, and the cap screw 15 can be inclined with respect to the pipe 10. The claw 15C has a spiral shape and is cut at 15d.

According to this, the male thread of the pipe IO and the holding screw 15
Since there is a considerable gap between the claw 15C and the female thread, the claw 15c moves from the valley of the male thread of the pipe 10 along the slope of the mountain and is inclined diagonally, so that the seat 12 and the
The gasket can be brought into close contact with the wall 3. In this case, since the diameter of the pawl of the engaged presser screw 8 is only slightly increased, the mold for the presser screw 150 can be easily changed.
It can be done cheaply.

The cap screw 15t in FIGS. 6 and 7; i is a cross-sectional view taken along the line AA in FIG. 8. Claw 1 for pipe 1o in Fig. 7
The positional relationship of 5C is shown for reference.

As is clear from the examples shown in FIGS. 6 to 8, FIGS.
In the embodiment shown in FIG. 5, the small diameter portion 13a of the cap screw 13
: 13ff) It is also conceivable to increase the diameter, while decreasing the size of the convex 513b, and to make the holding screw 13 also slope.

The embodiments shown in FIGS. 9 and 1O are modifications of the embodiments shown in FIGS. 3 to 5, in which the seat 12 is provided movably relative to the cap screw 15. A contact portion between the cap screw 15 and the seat [2] is provided on the outer periphery. There is no need to tilt the cap screw 15ti. In the embodiment shown in FIG. 9, the portion 12C of the seat 120 that contacts the curled portion 15a of the cap screw 15 is hemispherical. In the embodiment shown in FIG. 10, the portion 152 of the cap screw 5, which contacts the shoulder 12d of the cabinet 12, is hemispherical.

Further, in the above embodiment, the contact portion is placed on the outer periphery of the gasket 1, but it may be placed in the middle.

Although the seat 12 is provided, it may be unnecessary in the embodiments shown in FIGS. 6 to 8.

Although the male thread of the pipe 10 in the above embodiment is continuous, it could also be used with a pipe provided with a plurality of protrusions so as to have a substantially continuous male thread.

Although the above embodiment is designed to engage with the outer periphery of the pipe, it may be adapted to engage with the inner periphery depending on the case. It can also be used in a case where the main pipe 10 is horizontal and the outer surface of the wall 3 is sloped.

As described above, in the present invention, by tightening the holding screw, at least the inclination angle of the inclination of the inclination of the inclination of the inclination of the inclination of the inclination of the inclination of the inclination of the inclination of the inclination of the inclination of the inclination of the inclination of the inclination of the inclination of the inclination of the inclination of the inclination of the inclination of the inclination of the conduit to the pipe to the wall surface to the other to be in the direction opposite to that of the inclination direction. This allows seats to be made at low cost.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of an intake and exhaust pipe equipped with a conventional sealing device, and FIG. 2 is an enlarged cross-sectional view of the main part of FIG. 1. 3 is a vertical cross-sectional view of the sealing device according to an embodiment of the present invention in a state in which the sealing device is in the middle of being installed, FIG. 4 is a vertical cross-sectional view of the sealing device shown in FIG. A side view of the screw, FIG. 6 is a vertical cross-sectional view of a sealing device according to another embodiment of the present invention in a state in the middle of installation, FIG. 7 is a vertical cross-sectional view of a state in which the installation is completed in FIG. Front view of the cap screw in Figure 6, No. 9
10 are longitudinal cross-sectional views of essential parts of different embodiments of the present invention. 10...Pipe 11...Putkin 1
2...Seat 12a...Ring 12
b... Hole 12C... Hemispherical part 12d
... Shoulder part 13 ... Holding screw 13a, x
3f...Small diameter part 13b...Convex part 13C for female thread
...Semispherical part 13d...Maximum diameter part 13e.
... Convex portion 15 ... Holding screw 15a ...
Curl part 15C...Claw for female thread 15)...
Hemispherical part 1F 21 2nd figure) t'3 (21 years old 43 'Jr6t! I '1-7fa 9th figure - Saito figure

Claims (1)

[Claims] 1. A pipe having a thread is passed through the wall and installed obliquely to the wall surface C2, and a retaining screw is tightened to the screw to tighten the gasket located between the wall surface and the necessary seat C2. Seal device 1 for an inclined pipe to be pressed through the sealing device 1: The thickness of the packing and the seat is substantially the same at each part, and by tightening the holding screw, at least one of the holding screw, the seat, or the packing is tightened. The pipe is arranged to move in the combined direction of the axial direction and the radial direction of the pipe, and by movement in the combined direction, at least the seal and the seat having from the necessary C2 are attached to the wall surface (the inclination angle of the pipe is C: A sealing device for an inclined pipe characterized in that ζ is divided into two parts so as to be inclined in the opposite direction of the inclination direction ζ. C. At least one of the contact portions with the packing having a twisted seat is tapered, and the size of the tapered shape is such that the entire contact portion of the other portion moves along the tapered surface of the one. A sealing device for an inclined pipe, characterized in that it is bifurcated. 3. In Claim i@2, the one is the retaining screw, and the hole in the seat through which the pipe passes and the tapered portion of the retaining screw. The diameter of the presser screw outside the contact portion is the large diameter portion, the diameter of the presser screw inside the contact portion is the small diameter portion, and the space between the two is provided in the tapered shape. A sealing device for an inclined pipe characterized by: 4. Claim 2 (2) The tapered portion is a part of a spherical cross section in the axial direction. Sealing device. 5. In claim I81 C2, the total inclination angle between the threaded portion of the retaining screw and the threaded portion of the pipe is such that the retaining screw can be inclined with respect to the pipe C2 (= A sealing device for an inclined pipe, characterized in that: 6. Claim 1185. 1U, the pipe is provided with a male thread having an oblique direction of ``4/'', and the male thread ζ is a female thread of an engaging presser screw. A sealing device for an inclined pipe, characterized in that the thread diameter is sufficiently larger than the root diameter, and the axial width of the female thread is smaller than the root width of the male thread.