JP6567474B2 - Water-stop structure of outer wall penetrating portion and formation method thereof - Google Patents

Description

  The present invention relates to a water-stopping structure of an outer wall penetration part in a penetration part provided on an outer wall and a method for forming the same.

  Conventionally, for example, when a pipe connected to a hot water heater or the like installed outdoors is drawn indoors, it is necessary to install the pipe through a wall section that separates the outdoors from the indoors. Since it is necessary to prevent intrusion of water from the penetration part, a wall part penetration member is provided in the penetration part.

  As such a wall part penetration structure, there exists a pipe penetration structure which balances the tolerance with respect to the relative displacement of a through-hole and piping, and the water stop performance with respect to a high water pressure, for example (patent document 1).

  The wall-penetrating structure disclosed in Patent Document 1 has a sleeve that forms a through-hole through which a pipe passes through a wall that separates the outside from the inside, and an inner surface of the sleeve and an outer surface of the pipe so that the outside and the inside of the wall are in close contact with each other. And a separator that is spaced apart from the separator and that holds the separator that is deformed by receiving pressure from the outside.

  Moreover, in this wall part penetration structure, a gel-like body is apply | coated and solidified on the single side | surface of a supporting member, and an elastic member is closely_contact | adhered to the inner peripheral surface of a sleeve, and the outer peripheral surface of piping. Further, a separator plate in which the support member and the elastic member are integrated is provided inside the sleeve. By doing in this way, the water stop structure in the sleeve which isolate | separates the exterior and the inside of a wall is obtained. Water sealing between the outer peripheral surface of the sleeve and the inner peripheral surface of the through hole in the wall portion is a buried member in a state where the interface between the sleeve and the wall portion is filled with a repair material or the expansion member is inserted into the end of the buried member. It can be obtained by bonding to the substrate.

  Further, there is an outer wall penetrating structure that does not require a box or the like protruding from the outer wall of the building, has a good appearance, can be easily attached to the outer wall penetrating portion, and can be easily repaired or replaced (Patent Document 2).

  The outer wall penetration structure of Patent Document 2 is threadably engaged with a joint main body having a through hole insertion portion that is inserted into a through hole H that penetrates the wall W, and a male screw formed on the peripheral surface of the through hole insertion portion. And two wall clamping rings that are arranged with the wall interposed between the through hole insertion portions inserted through the through holes and sandwich the periphery of the through hole of the wall from both sides.

  The wall clamping ring has a positioning projection, and the positioning of the outer wall penetration portion pipe joint is performed by the positioning projection. It is also possible to temporarily fix the metal ring using the positioning ring by temporarily fixing the temporary fixing adhesive portion. Further, the water blocking of the outer wall penetration structure is performed by extrusion filling a sealing material (caulking material) from an injection gun or the like into the gap between the through hole insertion portion (straight pipe portion) and the through hole.

JP 2013-204699 A JP 2010-266067 A

  However, since Patent Document 1 has a structure having a sleeve, the number of parts is large, and workability for installing the sleeve is poor. In addition, since the sleeve is used, it is difficult to ensure water-stopping when the surface of the wall through hole is uneven. Specifically, in Patent Document 1, a pressing body is bolted to a flange toward the outside of the sleeve, and a gel-like body is applied and solidified on one side of the support member, and the elastic member is attached to the inner peripheral surface of the sleeve and the sleeve. The structure is complicated, for example, a partition plate in which the support member and the elastic member are integrated is provided in close contact with the outer peripheral surface of the pipe.

  In addition, when a sealing material is used as in Patent Document 2, work cannot be performed until the sealing material is cured, and workability is poor. Also, after filling the sealing material, it is difficult to redo the work.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a water stop structure of an outer wall penetrating portion having a simple structure and excellent workability such as insertability and water stop.

In order to achieve the above-described object, the first invention includes a horizontal shaft portion that is inserted in parallel with the outer wall through-hole, a wall surface shaft portion that is perpendicular to the horizontal shaft portion, the horizontal shaft portion, and the horizontal shaft portion. A metal having an L-shaped metal elbow having a hollow cross section having a connecting portion connecting wall surface direction shaft portions and connecting portions provided at both ends, and a metal having a hole in the center through which the horizontal shaft portion of the metal elbow is inserted. An inner flange and an outer flange made of metal, and a foamed resin ring through which the horizontal shaft portion of the metal elbow is inserted. The foamed resin ring has an insertion hole in the center, and the foamed resin ring is Inserted and fixed to the horizontal shaft portion in contact with the outer flange, the outer peripheral portion of the foamed resin ring contacts the inner surface of the outer wall through hole, and the inner peripheral portion of the foamed resin ring is the metal elbow On the outer periphery of the horizontal shaft The inner flange, the foamed resin ring, and the outer flange are arranged in this order in the horizontal shaft portion of the metal elbow in contact with each other from the indoor side toward the outdoor side, and the inner flange and the outer flange are The foam around the outer wall through-hole is sandwiched from both sides and fixed to the outer wall, and the outer shape of the horizontal shaft portion of the metal elbow is formed in an oval shape having linear portions parallel to each other, the foamed resin the inner peripheral portion of the ring is a water stop structure of the external wall penetration portions, characterized that you have been formed in a width smaller than the substantially square parallel portion of the oval of the horizontal axis portion.

  By screwing together a screw part formed in a central hole of the inner flange and the outer flange and a screw part formed in the horizontal shaft part of the metal elbow, the inner flange and the outer flange A flange may be fixed to the horizontal shaft portion of the metal elbow.

  A convex portion may be formed on the inner flange, the convex portion may be inserted into the outer wall through hole, and the horizontal shaft portion may be positioned with respect to the outer wall through hole.

  The horizontal shaft portion may be inserted into a metal ring, the metal ring may be inserted into the outer wall through hole, and the horizontal shaft portion may be positioned with respect to the outer wall through hole.

  The outer peripheral portion of the foamed resin ring is formed in a circular shape with an outer diameter larger than the diameter of the outer wall through hole, and the inner diameter of the inner peripheral portion of the foamed resin ring is smaller than the minimum diameter of the horizontal shaft portion of the metal elbow. The outer periphery of the foamed resin ring is compressed, the outer periphery of the foamed resin ring contacts the inner surface of the outer wall through-hole, and the inner periphery of the foamed resin ring is expanded. And the inner peripheral part of the said foaming resin ring may contact | abut the outer periphery of the said horizontal direction axial part of the said metal elbow.

  Furthermore, R may be formed in a substantially square corner of the inner periphery.

  The major axis direction of the horizontal shaft portion coincides with the vertical direction, the minor axis direction of the oval coincides with the horizontal direction, and the substantially square inner peripheral portions of the foamed resin ring through which the horizontal shaft portion is inserted are mutually connected. The two sides facing each other may be arranged so as to coincide with either the major axis direction or the minor axis direction of the horizontal axis portion.

  The foamed resin ring may be disposed in contact with only the outer flange, or the foamed resin ring may be disposed in contact with the inner flange and the outer flange.

  The foamed resin ring may be a foamed resin ring having water expandability.

  The foamed resin ring may be a single foamed resin ring or a foamed resin ring in which a plurality of foamed resin rings are laminated.

  The foamed resin ring may be a urethane foam resin, polyethylene foam resin, polypropylene foam resin, nitrile butadiene rubber foam, or chloroprene rubber foam having a C hardness of less than 25 according to JIS K7312.

  The inner flange and the outer flange may be made of gunmetal, a copper alloy such as brass, or stainless steel.

  According to 1st invention, the water stop structure of an outer wall penetration part can be obtained, without using a sleeve. For this reason, since the number of parts is small and the installation work of a sleeve is unnecessary, workability | operativity is also favorable. In particular, since a water-stopping property is ensured by the foamed resin ring, a conventional sealing material is unnecessary. For this reason, the waiting time of the hardening time of a sealing material is unnecessary. It is also easy to redo the installation work.

  Moreover, if the inner flange and the outer flange are fixed to the metal elbow by screwing the screw portions, the fixing is easy.

  Moreover, if a convex part is formed in an inner side flange and a convex part is inserted in an outer wall through-hole, positioning of a horizontal direction axial part can be performed.

  Similarly, a horizontal direction axial part can be positioned by providing a metal ring in a horizontal direction axial part, and inserting a metal ring in an outer wall through-hole.

  Further, if the outer diameter of the foamed resin ring is larger than the hole diameter of the outer wall through hole, the foamed resin ring can be securely adhered to the inner peripheral surface of the outer wall through hole. If the inner diameter of the foamed resin ring is smaller than the outer diameter of the horizontal shaft portion, the foamed resin ring can be brought into close contact with the horizontal shaft portion.

  Further, if the outer shape of the horizontal shaft portion is formed in an oval shape having linear portions parallel to each other, when the foamed resin ring is attached to the horizontal shaft portion, the compression amount in the circumferential direction of the foamed resin ring Can be changed. For this reason, a site | part with little compression amount can be formed in a part of foaming resin ring. In this way, when the foamed resin ring is inserted into the outer wall through-hole while being compressed, a portion with less elastic deformation that relaxes the pressing force (elastic repulsive force) due to compressive deformation on the outer peripheral side of the foamed resin ring is foamed. It is formed on a part of the inner peripheral side of the resin ring. For this reason, a pressing force relief portion is formed in which the insertion resistance in the circumferential direction of the foamed resin ring is reduced on both the outer peripheral side and the inner peripheral side of the resin foam ring. Will improve.

  Also, the inner peripheral portion of the foamed resin ring is formed in a substantially square shape smaller than the width of the oval parallel portion of the horizontal shaft portion, and the corners of each side of the substantially square shape are formed in an appropriate R shape. Is desirable. Since the inner peripheral part of the foamed resin ring is formed in a substantially square shape, the straight part of the hole of the foamed resin ring and the straight part of the horizontal shaft part can be more closely adhered to each other. The water-stopping property is improved. Further, if the shape of the hole of the foamed resin ring is square, a pair of parallel parts are formed. Therefore, it is easy to align the parallel part of the foamed resin ring and the parallel part of the horizontal shaft part. By forming the approximately square corner part of the part with smooth R, when the foamed resin ring is inserted into the horizontal shaft part of the metal elbow and expanded, stress concentrates on the inner peripheral part of the resin foam ring. It is possible to prevent cracks from occurring.

  Further, the major axis direction of the horizontal shaft portion coincides with the vertical direction, the minor axis direction of the oval coincides with the horizontal direction, and the two opposite sides of the substantially square inner periphery of the foamed resin ring are respectively horizontal. By arranging to match either the major axis direction or the minor axis direction of the direction shaft part, it is possible to increase the elastic repulsion force due to the compression of the foamed resin ring in the vertical direction and prevent the metal elbow from sinking Can do.

  Moreover, the water-stopping property can be more reliably ensured by arranging the foamed resin ring in contact with the outer flange. Since the insertion resistance in the vertical direction of the foamed resin ring is larger than the horizontal direction, the foamed resin ring is difficult to tilt when the foamed resin ring is inserted.

  In addition, if the foamed resin ring has water expandability, the water expansion effect of the foamed resin ring due to water absorption can be superimposed in addition to the water stop effect due to the elastic repulsion force obtained by reducing the diameter of the foamed resin ring. Thus, since the water stop effect can be enhanced, water stoppage can be ensured more reliably.

  Further, if the foamed resin ring is a single foamed resin ring or a foamed resin ring in which a plurality of foamed resin rings are laminated, it is possible to deal with outer walls having different thicknesses. Even when the foamed resin ring is thicker than the wall thickness, the foamed resin ring can be used by being pressed. In addition, even when the foamed resin ring is thinner than the wall thickness and is disposed in contact with the outer flange, when the foamed resin ring is expanded, the screw on which the inner peripheral side of the foamed resin ring is formed on the metal elbow Since it is fitted and fixed to the portion, the foamed resin ring does not shift.

  Further, if the foamed resin ring is a urethane foam resin, polyethylene foam resin, polypropylene foam resin, nitrile butadiene rubber foam, or chloroprene rubber foam having a C hardness of less than 25 according to JIS K7312, the outer wall through hole is formed. Insertability is good.

  Moreover, if the inner flange and the outer flange are made of gunmetal, a copper alloy such as brass, or stainless steel, the durability is excellent.

The second invention includes a horizontal shaft portion, a wall surface direction shaft portion perpendicular to the horizontal direction shaft portion, a connecting portion connecting the horizontal direction shaft portion and the wall surface direction shaft portion, and connection portions provided at both ends. A first step of abutting and fixing an inner flange to the horizontal shaft portion of the L-shaped metal elbow having a hollow cross section having a foamed resin ring having an inner diameter smaller than a minimum outer diameter portion of the horizontal shaft portion A second step of expanding the inner diameter of the foamed resin ring and inserting and fixing the foamed resin ring into the horizontal shaft part; and the foaming of the metal elbow with the foamed resin ring fixed to the horizontal shaft part. A third step of pressing the outer periphery of the resin ring and inserting it into the outer wall through hole; a fourth step of arranging the foamed resin ring at a predetermined position inside the outer wall through hole; and an outer flange on the foamed resin ring. And a fifth step of fixing by contact. In the inner flange and the outer flange, seen write sandwiched walls around the outer wall through-hole from both sides, the outer shape of the horizontal axis of the metal elbow, oval with a portion of the parallel straight portions mutually In the second step, the ellipse major axis direction of the horizontal shaft portion of the metal elbow is aligned with the vertical direction, the ellipse minor axis direction is aligned with the horizontal direction, and the horizontal elbow The two opposite sides of the substantially square inner periphery of the foamed resin ring through which the direction shaft portion is inserted are arranged so as to coincide with the major axis direction or the minor axis direction of the horizontal axis unit, respectively, and the foam It is a method for forming a water stop structure of an outer wall penetrating portion , wherein the amount of pressing in the vertical direction of the resin ring is made larger than the pressing force in the horizontal direction to prevent the metal elbow from being squeezed .

  According to the second invention, it is possible to easily form a wall-penetrating structure having excellent water blocking properties.

  Further, if the outer shape of the horizontal shaft portion is formed in an oval shape having linear portions parallel to each other, when the foamed resin ring is attached to the horizontal shaft portion, the compression amount in the circumferential direction of the foamed resin ring Can be changed. For this reason, a site | part with little compression amount can be formed in a part of foaming resin ring. In this way, when the foamed resin ring is inserted into the outer wall through-hole while being compressed, a portion with less elastic deformation that relaxes the pressing force (elastic repulsive force) due to compressive deformation on the outer peripheral side of the foamed resin ring is foamed. Since it is formed on a part of the inner peripheral side of the resin ring, the insertion resistance of the foamed resin ring is reduced and the insertability of the foamed resin ring is improved.

  Further, the major axis direction of the horizontal shaft portion coincides with the vertical direction, the minor axis direction of the oval coincides with the horizontal direction, and the two opposite sides of the substantially square inner periphery of the foamed resin ring are respectively horizontal. The metal elbow can be prevented from sinking by being arranged so as to coincide with either the major axis direction or the minor axis direction of the direction shaft portion.

  ADVANTAGE OF THE INVENTION According to this invention, the water stop structure of the outer wall penetration part etc. which are simple in structure and excellent in workability can be provided.

(A) is a side view of the metal elbow 1, and (b) is a cross-sectional view taken along line AA of (a). (A) is a figure which shows the state before attaching the inner flange 15 to the metal elbow 1, (b) is a figure which shows the state which attached the inner flange 15 to the metal elbow 1. FIG. (A) is a side view of the inner flange 15, (b) is a view from arrow B of (a), and (c) is a view from arrow C of (a). (A) is a figure which shows the state before attaching the foamed resin ring 23 to the metal elbow 1, (b) is a figure which shows the state which attached the foamed resin ring 23 to the metal elbow 1. FIG. (A) is a side view of the foamed resin ring 23, and (b) is a front view of the foamed resin ring 23. (A) is sectional drawing of the foamed resin ring 23, (b) is the FF sectional view taken on the line of FIG.5 (b). (A) is a figure which shows the state before inserting the metal elbow 1 in the outer wall through-hole 29, (b) The figure which shows the state which inserted the metal elbow 1 in the outer wall through-hole 29. (A) is a figure which shows the state before attaching the outer flange 31 to the metal elbow 1, (b) is a figure which shows the state which attached the outer flange 31 to the metal elbow 1. FIG. (A), (b) is a figure which shows the state which fixed the metal elbow 1 etc. to the outer wall 27 from which thickness differs. The figure which shows the state which has arrange | positioned the foaming resin ring 23 2 layers. (A), (b) is a figure which shows the state fixed to the metal elbow 1 to the metal ring 35. FIG.

  Hereinafter, the wall part penetration member concerning the present invention is explained. Fig.1 (a) is a side view which shows the metal elbow 1, FIG.1 (b) is the sectional view on the AA line of Fig.1 (a). In addition, the shape of the metal elbow 1 is not limited to the illustrated example, and can be appropriately changed in size and form.

  The metal elbow 1 is a member having a substantially L-shaped cross section. The metal elbow 1 includes a horizontal shaft portion 3 that is inserted in parallel with an outer wall through-hole, which will be described later, a wall surface shaft portion 5 that is perpendicular to the horizontal shaft portion 3, a horizontal shaft portion 3, and a wall surface shaft portion 5. And a connecting portion 7 to be connected. Further, connection portions 9 a and 9 b are provided at both ends of the metal elbow 1. That is, the connection portion 9 a is provided at the end of the wall surface direction shaft portion 5, and the connection portion 9 b is provided at the end portion of the horizontal direction shaft portion 3. For example, a hot water heater disposed outdoors and the connection portion 9b are connected to a stainless steel flexible tube, and a crosslinked polyethylene tube disposed indoors is connected to the connection portion 9a.

  On the outer peripheral surface of the horizontal shaft portion 3, a screw portion 11 is provided over substantially the entire length excluding the connection portion 9b described above. The screw part 11 is a part that is screwed with an inner and outer flange member described later.

  The outer shape of the horizontal axis portion 3 of the metal elbow 1 is formed in a shape having a part of straight portions 13 parallel to each other. That is, in the cross section perpendicular to the axial direction of the horizontal shaft portion 3, a part of the substantially circular outer shape is cut off to form a pair of linear portions 13. The straight line portion 13 is formed over at least the entire length of the formation range of the screw portion 11 of the horizontal direction shaft portion 3.

  In the present invention, a shape in which a part of a circle is cut off by straight portions 13 parallel to each other is referred to as an “oval”. Further, a direction parallel to the straight line portion 13 of the horizontal shaft portion 3 (L direction in FIG. 1B) is an oval “major diameter direction”, and a direction perpendicular to this (K direction in FIG. 1B). ) Is defined as an oblong “minor axis direction”.

  Next, the formation method of the water stop structure of an outer wall penetration part is demonstrated. 2A is a view showing a state before the inner flange 15 is attached to the metal elbow 1, and FIG. 2B is a view showing a state where the inner flange 15 is attached to the metal elbow 1. First, the inner flange 15 is fixed to the metal elbow 1.

  3 (a) is a side view showing the inner flange 15, FIG. 3 (b) is a view as seen from an arrow B in FIG. 4 (a), and FIG. 3 (c) is a view as seen from an arrow C in FIG. 3 (a). It is. The inner flange 15 is disk-shaped and has a hole 21 in the center. The horizontal shaft portion 3 is inserted into the hole 21. A screw portion is formed on the inner surface of the hole 21 and can be screwed into the screw portion 11 of the horizontal shaft portion 3 described above.

The inner flange 15 is made of metal. In addition, although the material of the inner side flange 15 is not ask | required, for example, it is desirable to comprise either a gun metal, a copper alloy such as brass, or stainless steel.

  A nut portion 19 is provided on one surface of the inner flange 15. The nut portion 19 is used when the inner flange 15 is fixed to the horizontal shaft portion 3. A convex portion 17 is formed on the other surface of the inner flange 15. The convex portion 17 is a portion having a circular outer shape that protrudes from the other surface of the inner flange 15.

  As shown in FIG. 2A, first, the formation surface of the nut portion 19 of the inner flange 15 and the metal elbow 1 are made to face each other. From this state, the horizontal shaft portion 3 is inserted through the inner flange 15 (in the direction of arrow D in the figure).

  In addition, as shown in FIG.2 (b), the inner side flange 15 is arrange | positioned at the base part side (connection part 7 side) of the horizontal direction axial part 3. As shown in FIG. At this time, the inner flange 15 is fixed in contact with the horizontal shaft portion 3 of the metal elbow 1 by screwing the screw portion of the hole 21 of the inner flange 15 and the screw portion 11 of the horizontal shaft portion 3 to each other. (First step).

  Next, the foamed resin ring 23 is fixed to the metal elbow 1. 4A is a view showing a state before the foamed resin ring 23 is attached to the metal elbow 1, and FIG. 4B is a view showing a state where the foamed resin ring 23 is attached to the metal elbow 1. 5A is a side view of the foamed resin ring 23, and FIG. 5B is a front view of the foamed resin ring 23.

  The foamed resin ring 23 has an insertion hole 25 in the center. The horizontal shaft 3 of the metal elbow 1 is inserted through the insertion hole 25 of the foamed resin ring 23 (arrow E in FIG. 4A).

  The foamed resin ring 23 is preferably a urethane foam resin, a polyethylene foam resin, a polypropylene foam resin, a nitrile butadiene rubber foam, or a chloroprene rubber foam having a C hardness of less than 25 according to JIS K7312. If the rubber hardness is too high, attachment of the metal elbow 1 to the horizontal shaft portion 3 and insertability into an outer wall through-hole described later are deteriorated. Particularly preferably, the C hardness of the foamed resin ring 23 according to JIS K7312 is 7.

  The foamed resin ring 23 may be a foamed resin ring having water expandability. For example, a water-swellable urethane foam that is a flexible urethane foam mixed with a water-absorbing polymer can be used. If it has water expansibility, when water permeates into the room from the outside, the foamed resin ring 23 swells and expands in volume, thereby increasing the water stoppage. As such a foamed resin ring, for example, Insulon JS standard (trade name) manufactured by Nippon Hojo Co., Ltd. can be used.

  As shown in FIG. 4B, when the foamed resin ring 23 is completely attached to the horizontal shaft portion 3, the foamed resin ring 23 comes into contact with the convex portion 17 of the inner flange 15. In addition, the outer diameter of the convex part 17 is smaller than the outer diameter of the foamed resin ring 23.

  6A is a cross-sectional view of the foamed resin ring 23, and FIG. 6B is a cross-sectional view taken along the line FF of FIG. 4B. As shown in FIG. 6A, the outer shape of the foamed resin ring 23 is substantially circular. Further, the insertion hole 25 of the foamed resin ring 23 is formed in a substantially square shape. Here, as shown in FIG. 6 (b), the directions parallel to the two opposite sides of the inner peripheral portion of the substantially square insertion hole 25 (the arrow N direction or M direction in the figure) are respectively horizontal axes. It is desirable that the portion 3 is arranged so as to coincide with either the major axis direction or the minor axis direction. In addition, the length of the substantially square side of the insertion hole 25 is smaller than the width of the oval parallel portion of the horizontal shaft portion 3.

  Thus, by forming the shape of the insertion hole 25 of the foamed resin ring 23 into a substantially square shape smaller than the width of the oval parallel part of the horizontal shaft 3, the parallel part of the insertion hole 25 of the foamed resin ring 23 is formed. And the straight portion 13 of the horizontal shaft portion 3 can be brought into close contact with each other. For this reason, the waterproof property between the foamed resin ring 23 and the horizontal direction axial part 3 improves. Moreover, since the shape of the insertion hole 25 of the foamed resin ring 23 is substantially square, a pair of parallel portions is formed. For this reason, it is easy to match the parallel portion of the insertion hole 25 of the foamed resin ring 23 with the parallel portion of the horizontal shaft portion 3.

  Here, as described above, the inner peripheral portion of the foamed resin ring 23 is formed in a substantially square shape smaller than the width of the oval parallel portion of the horizontal shaft portion 3. That is, the inner diameter of the inner peripheral portion of the foamed resin ring 23 is formed to be smaller than the minimum outer diameter portion (short diameter) of the horizontal shaft portion 3 of the metal elbow 1. For this reason, if the horizontal direction axial part 3 is inserted in the insertion hole 25 of the foamed resin ring 23, the inner peripheral part of the foamed resin ring 23 is expanded. For this reason, the inner peripheral part of the foamed resin ring 23 can be fixed in contact with the outer periphery of the horizontal shaft part 3 of the metal elbow 1 (second step).

  Further, as described above, the outer shape of the horizontal direction shaft portion 3 is formed in an oval shape having linear portions 13 parallel to each other. For this reason, as shown in FIG. 6B, when the foamed resin ring 23 is attached to the horizontal shaft portion 3, the compression amount can be changed in the circumferential direction of the foamed resin ring 23.

  More specifically, the major axis direction of the oval of the horizontal direction shaft portion 3 has a larger diameter than the minor axis direction. For this reason, the amount of compression in the major axis direction (arrow H in the figure) at the inner peripheral portion of the foamed resin ring 23 is larger than the amount of compression in the minor axis direction (arrow G in the figure).

  By doing in this way, a site | part with little compression amount is formed in a part of inner peripheral part of the foamed resin ring 23. FIG. Therefore, when the foamed resin ring 23 is inserted into the outer wall through-hole described later while being compressed, the portion with less compression deformation that relieves the pressing force due to compressive deformation on the outer peripheral side of the foamed resin ring 23 is the inner peripheral side of the foamed resin ring. Formed in part. For this reason, the insertion resistance of the foamed resin ring 23 is reduced, and the insertability of the foamed resin ring 23 into the outer wall through hole is improved.

  In addition, the shape of the insertion hole 25 of the foamed resin ring 23 is not limited to a substantially square shape. For example, a circular shape or a shape corresponding to the outer shape of the horizontal shaft portion 3 can be selected as appropriate.

  Further, the foamed resin ring 23 hardly affects the outer shape even if the amount of compression from the inner peripheral side differs in the circumferential direction. That is, the foamed resin ring 23 has a substantially circular outer shape even when the horizontal shaft portion 3 is inserted, and the outer diameter of the portion hardly changes.

  Next, the metal elbow 1 in which the foamed resin ring 23 is fixed to the horizontal shaft portion 3 is fixed to the outer wall 27 from the indoor side. FIG. 7A is a view showing a state before the metal elbow 1 is inserted into the outer wall through-hole 29, and FIG. 7B is a view showing a state in which the metal elbow 1 is inserted into the outer wall through-hole 29.

  The horizontal shaft portion 3 to which the foamed resin ring 23 is fixed is inserted into the outer wall through-hole 29 with the connecting portion 9b side as the tip side (arrow I in the figure). At this time, the outer peripheral portion of the foamed resin ring 23 is formed in a circular shape whose outer shape is larger than the diameter of the outer wall through hole. For this reason, when the horizontal shaft portion 3 to which the foamed resin ring 23 is fixed is inserted into the outer wall through-hole 29, the outer periphery of the foamed resin ring 23 is pressed, and the outer periphery of the foamed resin ring 23 becomes the inner surface of the outer wall through-hole 29. (Third step).

  The outer diameter of the inner flange 15 is larger than the hole diameter of the outer wall through hole 29. Therefore, when the horizontal shaft portion 3 is completely inserted into the outer wall through hole 29, one surface of the inner flange 15 comes into contact with the outer wall 27 around the outer wall through hole 29.

  Further, when the horizontal shaft portion 3 is completely inserted into the outer wall through hole 29, the convex portion 17 of the inner flange 15 described above is inserted into the outer wall through hole 29. The outer diameter of the convex portion 17 is slightly smaller than the hole diameter of the outer wall through hole 29. For this reason, by positioning the convex portion 17 through the outer wall through-hole 29, the horizontal shaft portion 3 can be positioned with respect to the outer wall through-hole 29 (positioning in a direction perpendicular to the axial direction of the horizontal shaft portion 3). it can. In this way, the foamed resin ring 23 inserted through the outer wall through hole 29 can be disposed at a predetermined position inside the outer wall through hole 29 (fourth step).

  Here, it is desirable to make the major axis direction of the horizontal shaft portion 3 coincide with the vertical direction, and make the minor axis direction of the oval coincide with the horizontal direction. As described above, the insertion hole 25 of the foamed resin ring 23 is substantially square. In addition, the foamed resin ring 23 is arranged so that two mutually opposing sides of the inner peripheral portion of the foamed resin ring 23 coincide with either the major axis direction or the minor axis direction of the horizontal shaft 3. For this reason, in the up-down direction (vertical direction) of the horizontal direction axial part 3, the compression amount of the foamed resin ring 23 becomes large.

  Thus, the metal elbow 1 can be prevented from sinking downward inside the outer wall through-hole 29 by making the pressing amount in the vertical direction of the foamed resin ring 23 larger than the pressing force in the horizontal direction.

  Next, the outer flange 31 is attached to the horizontal shaft portion 3. 8A is a view showing a state before the outer flange 31 is attached to the metal elbow 1, and FIG. 8B is a view showing a water stop structure of the outer wall penetrating portion in a state where the outer flange 31 is attached to the metal elbow 1. It is.

  The outer flange 31 is a metal disk-shaped member, and a hole 33 is formed therein. The horizontal shaft portion 3 is inserted into the hole 33. In addition, although the material of the outer side flange 31 is not ask | required, for example, it is desirable to comprise either a gun metal, a copper alloy such as brass, or stainless steel.

  A threaded portion is formed on the inner surface of the hole 33 at the center of the outer flange 31. By screwing the screw part formed in the hole 33 at the center of the outer flange 31 and the screw part 11 formed in the horizontal shaft part 3 of the metal elbow 1, the outer flange 31 is attached to the metal elbow 1. Fixed to the horizontal shaft 3.

  At this time, the outer flange 31 is fixed so as to contact the foamed resin ring 23 (fifth step). That is, the foamed resin ring 23 is inserted and fixed to the horizontal shaft portion 3 in contact with the outer flange 31. By doing in this way, the entrance of water from the outdoor side can be more reliably prevented. In the illustrated example, the foamed resin ring 23 contacts both the outer flange 31 and the inner flange 15. In this way, the foamed resin ring 23 can be disposed over substantially the entire thickness of the outer wall through hole 29.

  Further, the outer diameter of the outer flange 31 is larger than the hole diameter of the outer wall through hole 29. Therefore, when the outer flange 31 is completely screwed to the horizontal shaft portion 3, one surface of the outer flange 31 comes into contact with the outer wall 27 around the outer wall through hole 29.

  That is, the inner flange 15, the foamed resin ring 23, and the outer flange 31 are arranged in this order from the indoor side toward the outdoor side on the horizontal shaft portion 3 of the metal elbow 1. Further, the inner flange 15 and the outer flange 31 are fixed to the outer wall 27 by sandwiching the wall around the outer wall through hole 29 from both sides.

  When the outer flange 31 is tightened, the outer flange 31 can be tightened by holding the linear portion 13 with a tool. Furthermore, the inner flange 15 can be tightened by holding the nut portion 19 of the inner flange 15 with a tool.

  As described above, according to the present embodiment, it is possible to obtain a water stop structure of the outer wall penetrating portion without using a conventional sleeve. For this reason, since the number of parts is small and the installation work of a sleeve is unnecessary, workability | operativity is also favorable.

  In particular, since the water-stopping property is secured by the foamed resin ring 23, a conventional sealing material is unnecessary. For this reason, the waiting time until hardening of a sealing material is unnecessary. Moreover, it is easy to redo the installation of the metal elbow 1. Further, since the foamed resin ring 23 is disposed in contact with the outer flange 31, it is possible to ensure water-stopping more reliably.

  Further, the inner flange 15 and the outer flange 31 can be fixed to the screw portion 11 of the horizontal shaft portion 3 of the metal elbow 1 by screwing. For this reason, fixing work is easy.

  Further, the convex portion 17 is formed on the inner flange 15, and the convex portion 17 is inserted into the outer wall through hole 29, whereby the horizontal shaft portion 3 can be positioned inside the outer wall through hole 29.

  Further, since the outer diameter of the foamed resin ring 23 is larger than the hole diameter of the outer wall through-hole 29, the foamed resin ring 23 can be securely adhered to the inner peripheral surface of the outer wall through-hole 29. Further, since the inner diameter of the foamed resin ring 23 is smaller than the outer diameter (minimum diameter) of the horizontal shaft 3, the foamed resin ring 23 can be securely adhered to the horizontal shaft 3.

  Further, since the outer shape of the horizontal shaft portion 3 is formed in an oval shape having the linear portions 13 parallel to each other, when the foamed resin ring 23 is attached to the horizontal shaft portion 3, The amount of compression changes in the circumferential direction. For this reason, a part with a small amount of compression is formed in a part of the foamed resin ring 23. In this way, when the foamed resin ring 23 is inserted into the outer wall through-hole 29 while being compressed, a portion with less deformation that relieves the pressing force due to compressive deformation of the outer periphery of the foamed resin ring 23 is within the foamed resin ring. Since it is formed in a part of the peripheral side, the insertion resistance of the foamed resin ring 23 is reduced, and the insertability of the foamed resin ring 23 into the outer wall through hole 29 is improved.

  Further, since the shape of the insertion hole 25 of the foamed resin ring 23 is formed in a substantially square shape smaller than the width of the parallel portion of the horizontal shaft portion 3, the straight portion of the insertion hole 25 and the straight portion 13 of the horizontal shaft portion 3 are formed. Can be brought into close contact with each other. For this reason, the waterproof property between the insertion hole 25 of the foamed resin ring 23 and the horizontal direction axial part 3 improves. Moreover, since the shape of the insertion hole 25 of the foamed resin ring 23 is a square, a pair of parallel parts are formed, and the parallel part of the foamed resin ring 23 and the parallel part of the horizontal shaft part 3 can be easily aligned.

  Further, the major axis direction of the horizontal shaft portion 3 is made to coincide with the vertical direction, and the two opposite sides of the substantially square inner peripheral portion of the foamed resin ring 23 are made to coincide with the major axis direction of the horizontal shaft portion 3. By disposing, sinking in the outer wall through-hole 29 of the metal elbow 1 can be prevented.

  Moreover, in this embodiment, since the screw part 11 is formed over the substantially full length of the horizontal direction axial part 3, application is easy also to the outer wall 27 from which thickness differs. FIG. 9A is a view showing a state in which the metal elbow 1 or the like is fixed to the thin outer wall 27. In this case, the foamed resin ring 23 having a length corresponding to the thickness of the outer wall 27 is used, and the outer flange 31 and the inner flange 15 are tightened by tightening the outer flange 31 until it contacts the outer wall 27 (foamed resin ring 23). Thus, the outer wall 27 can be sandwiched.

  Note that the length of the foamed resin ring 23 may be shorter than the thickness of the outer wall 27. FIG. 9B is a diagram showing a state in which the metal elbow 1 or the like is fixed to the thick outer wall 27. In this case, the foamed resin ring 23 may be brought into contact only with the outer flange 31. By doing in this way, the permeation of water from the outdoor side can be prevented.

  Further, the foamed resin ring 23 may be used not only in one piece but also in plural pieces. FIG. 10 is a view showing a state in which a plurality of foamed resin rings 23 are stacked and arranged. As described above, when the length of the foamed resin ring 23 is short, water stoppage can be more reliably ensured by stacking and arranging a plurality of foamed resin rings 23.

  Further, in this case, even if the total length of the foamed resin ring when a plurality of foamed resin rings 23 are combined is longer than the thickness of the outer wall through hole 29, the foamed resin ring is formed between the inner flange 15 and the outer flange 31. 23 can be used by tightening each other.

  Further, instead of forming the convex portion 17 on the inner flange 15, a metal ring may be used separately. FIG. 11A is a diagram showing a state where the horizontal shaft portion 3 is inserted through the metal ring 35. The metal ring 35 attached to the horizontal shaft 3 is inserted into the outer wall through hole 29.

  The outer diameter of the metal ring 35 is slightly smaller than the hole diameter of the outer wall through hole 29. In addition, the hole of the metal ring 35 may form a screw | thread and does not need to have a screw | thread.

  That is, the metal ring 35 is disposed between the inner flange 15 and the outer flange 31 of the outer wall through-hole 29 and is screwed to the horizontal shaft portion 3 at a substantially right angle. One horizontal shaft portion 3 can be positioned.

  In this case, as shown in FIG. 11B, the foamed resin ring 23 and the metal ring 35 can be brought into contact with each other. Thus, the foamed resin ring 23 is easily positioned by bringing the foamed resin ring 23 into contact with the metal ring 35. Further, when the foamed resin ring 23 is inserted into the outer wall through-hole 29, it is possible to prevent a positional shift or the like from occurring.

  Although the embodiments of the present invention have been described with reference to the accompanying drawings, the technical scope of the present invention is not affected by the above-described embodiments. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

DESCRIPTION OF SYMBOLS 1 ......... Metal elbow 3 ......... Horizontal direction axial part 5 ......... Wall surface direction axial part 7 ......... Connecting part 9a, 9b ......... Connection part 11 ......... Screw part 13 ......... Linear part 15 ... …… Inner flange 17 ……… Convex portion 19 …… Nut portion 21 ...... Hole 23 ………… Foamed resin ring 25 ………… Insertion hole 27 ………… Outer wall 29 ………… Outer wall through hole 31 ………… Outer flange 33 ......... hole 35 ......... Metal ring

Claims (12)

A horizontal shaft portion that is inserted in parallel with the outer wall through hole, a wall surface direction shaft portion that is perpendicular to the horizontal shaft portion, a connecting portion that connects the horizontal shaft portion and the wall surface shaft portion, and provided at both ends. A hollow L-shaped metal elbow having a connection portion,
A metal inner flange and an outer flange having a hole in the center, which is inserted through the horizontal shaft portion of the metal elbow;
A foamed resin ring inserted through the horizontal shaft of the metal elbow;
Comprising
The foamed resin ring has an insertion hole in the center,
The foamed resin ring is inserted and fixed to the horizontal shaft portion in a state where the foamed resin ring is in contact with the outer flange,
The outer peripheral part of the foamed resin ring abuts on the inner surface of the outer wall through-hole,
The inner peripheral portion of the foamed resin ring is in contact with the outer periphery of the horizontal shaft portion of the metal elbow,
From the indoor side toward the outdoor side, the inner flange, the foamed resin ring, and the outer flange are arranged in this order in the horizontal shaft portion of the metal elbow, and the inner flange and the outer flange are formed on the outer wall through hole. The wall around is sandwiched from both sides and fixed to the outer wall ,
An outer shape of the horizontal shaft portion of the metal elbow is formed in an oval shape having linear portions parallel to each other, and an inner peripheral portion of the foamed resin ring is an oval parallel portion of the horizontal shaft portion. water stop structure of the external wall penetration portions, characterized that you have been formed in a width smaller substantially square.   By screwing together a screw part formed in a central hole of the inner flange and the outer flange and a screw part formed in the horizontal shaft part of the metal elbow, the inner flange and the outer flange The water stop structure of the outer wall through portion according to claim 1, wherein a flange is fixed to the horizontal shaft portion of the metal elbow.   The convex portion is formed on the inner flange, the convex portion is inserted into the outer wall through hole, and the horizontal shaft portion is positioned with respect to the outer wall through hole. The water stop structure of the outer wall penetration part in any one of.   The horizontal shaft portion is inserted into a metal ring, the metal ring is inserted into the outer wall through hole, and the horizontal shaft portion is positioned with respect to the outer wall through hole. The water stop structure of the outer wall penetration part in any one of 2.   The outer peripheral portion of the foamed resin ring is formed in a circular shape with an outer diameter larger than the diameter of the outer wall through hole, and the inner diameter of the inner peripheral portion of the foamed resin ring is smaller than the minimum diameter of the horizontal shaft portion of the metal elbow. The outer periphery of the foamed resin ring is compressed, the outer periphery of the foamed resin ring contacts the inner surface of the outer wall through-hole, and the inner periphery of the foamed resin ring is expanded. The water stop structure of the outer wall penetrating portion according to any one of claims 1 to 3, wherein an inner peripheral portion of the foamed resin ring is in contact with an outer periphery of the horizontal shaft portion of the metal elbow. . The major axis direction of the horizontal shaft portion coincides with the vertical direction, the minor axis direction of the oval coincides with the horizontal direction, and the substantially square inner peripheral portions of the foamed resin ring through which the horizontal shaft portion is inserted are mutually connected. 6. The water stop structure of the outer wall penetration part according to claim 5 , wherein two sides facing each other are arranged so as to coincide with either the major axis direction or the minor axis direction of the horizontal axis part, respectively. The foamed resin ring is disposed in contact with only the outer flange, or the foamed resin ring is disposed in contact with the inner flange and the outer flange. The water stop structure of the outer wall penetration part in any one of 6 . The water stop structure of the outer wall penetrating portion according to any one of claims 1 to 7 , wherein the foamed resin ring is a foamed resin ring having water expandability. The water stop structure of the outer wall penetrating portion according to any one of claims 1 to 8 , wherein the foamed resin ring is one foamed resin ring or a foamed resin ring in which a plurality of foamed resin rings are laminated. The foamed resin ring is a urethane foam resin, polyethylene foam resin, polypropylene foam resin, nitrile butadiene rubber foam, or chloroprene rubber foam having a C hardness of less than 25 according to JIS K7312. The water stop structure of the outer wall penetrating portion according to claim 9 . The water stop structure of the outer wall penetration part according to any one of claims 1 to 10 , wherein said inner flange and said outer flange are made of either a copper alloy or stainless steel. A hollow section having a horizontal shaft portion, a wall surface shaft portion perpendicular to the horizontal shaft portion, a connecting portion connecting the horizontal shaft portion and the wall surface shaft portion, and connecting portions provided at both ends. A first step of abutting and fixing an inner flange to the horizontal shaft portion of the L-shaped metal elbow;
A second step of expanding the inner diameter of the foamed resin ring whose inner diameter is smaller than the minimum outer diameter part of the horizontal shaft part, and inserting and fixing the foamed resin ring through the horizontal shaft part;
A third step of inserting the metal elbow having the foamed resin ring fixed to the horizontal shaft portion into the outer wall through hole by pressing the outer periphery of the foamed resin ring;
A fourth step of disposing the foamed resin ring at a predetermined position inside the outer wall through hole;
A fifth step of fixing the outer flange in contact with the foamed resin ring;
The turn is performed at the inner flange and the outer flange, seen write sandwiched walls around the outer wall through-hole from both sides,
The outer shape of the horizontal axis portion of the metal elbow is formed in an oval shape having linear portions parallel to each other,
In the second step,
The major axis direction of the ellipse of the horizontal axis portion of the metal elbow is matched with the vertical direction, and the minor axis direction of the ellipse is aligned with the horizontal direction,
Two opposite sides of the substantially square inner periphery of the foamed resin ring through which the horizontal shaft portion is inserted are arranged so as to coincide with the major axis direction or the minor axis direction of the horizontal shaft unit, respectively.
A method for forming a water-stopping structure for an outer wall penetrating portion , wherein the amount of pressing in the vertical direction of the foamed resin ring is made larger than the pressing force in the horizontal direction to prevent the metal elbow from being squeezed .

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