JP5276616B2 - Airtight duct structure of hollow wall and through duct member used for the structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a duct structure for a hollow wall, achieving installation even if the center positions of both through-holes are displaced and maintaining the airtightness of a hollow space regardless of the deformation of the through-holes and the magnitude of the diameters thereof. <P>SOLUTION: In this airtight dust structure for the hollow wall, a through-duct member composed of a tube 1, center spacers 2, 3 and end pressing members 8 is mounted in the through-holes a, b formed in the internal wall material A and external wall material B of the hollow wall. The tube 1 is composed of an expandable portion 4 formed with recessed and projecting portions, a front flange 6 and a rear flange 5 provided on both sides of the expandable portion, and an insertion guide 7 projecting from the inner periphery of the front flange 6. The center spacers 2, 3 are arranged on the outer peripheral surface of the insertion guide 7. In each of the end pressing members 8, a cylindrical portion 9 provided with an engagement portion 10 fitted into the tube 1 is formed with a pressing flange portion 12. The tube 1 provided with the center spacers 2, 3 is inserted into the through-holes while being deformed, and the projecting portion of the insertion guide 7 is cut. The end pressing members 8 are inserted from the outside of the rear flange 5 and insertion guide 7. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a duct structure for maintaining airtightness in a hollow wall with respect to a through hole opened for piping and wiring of equipment such as an air conditioner in a hollow wall of a wooden house or the like, and a through hole used in the duct structure The present invention relates to a duct member.

Many wooden houses in which a hermetic sheet is stretched on the inner surface of a hollow wall composed of an outer wall material and an inner wall material and the hollow space is filled with a heat insulating material are constructed as highly airtight wooden houses subject to energy saving measures.
When installing an air conditioner in such a house, a through hole having a diameter of about 65 mm that penetrates the outer wall material and the inner wall material is opened, and a drain pipe, an electric cord, and a refrigerant that connect the indoor unit and the outdoor unit to the through hole. Pipes and wiring such as pipes. And after piping and wiring work, both sides of the through hole are closed with putty.
However, if drainage pipes, electrical cords, refrigerant pipes, etc. are overlapped, there will be easy gaps around them, and cracks, delamination and dropout will occur in the putty due to shrinkage and deterioration due to changes over time due to ultraviolet rays, resulting in large gaps. Sometimes you can.
If this happens, the airtightness of the walls will be lost in the gap and the heat insulation will be reduced, and a large amount of heat energy will be wasted to cool and heat the room, and the value of the house will be damaged by termite damage such as termites entering through the gap. .

When mortar is used instead of such putty that tends to deteriorate, it takes time to solidify after filling at the time of construction, and it becomes difficult to remove the mortar that has solidified when replacing an apparatus such as an air conditioner.
In order to solve such a problem, the following cited document 1 discloses that a helical tube is inserted into a through-hole without using a mortar, and an elastic sealing material is disposed in a gap between the helical tube and a wall. There has been proposed a method of closing a gap by pressing an elastic sealing material against a wall with a fixing ring screwed into a spiral tube.
However, in the technique of Patent Document 1, the duct through-hole is provided by shifting the center positions of the outer wall material side and the inner wall material side so as to avoid damaging the load bearing structures such as the studs and braces. For example, a spiral tube made of a hard material such as a metal such as aluminum or engineer plastic can hardly be bent. If the tube is forcibly bent, the spiral formed in the spiral tube is deformed and the fixing ring is screwed. It cannot be used because it cannot be combined.
Furthermore, since this method uses a dedicated spiral tube, a fixing ring that is screwed into the tube, and an elastic seal material, there is a difficulty in that the cost of the material is increased and construction such as screwing of the fixing ring is very troublesome. is there.

  As described above, the present inventor previously described the bellows-like shape of the following Patent Document 2 as a method that can be constructed even when the ducts are provided by shifting the center positions of both through-holes of the outer wall material and the inner wall material. A wall-connecting pipe and its wall structure were proposed.

JP 2000-179750 A Japanese Patent No. 3848968

In the above Patent Document 2, even if the center positions of the through holes on the outer wall material side and the inner wall material side are shifted, the wall communication pipe material can be mounted flexibly so that the space in the wall is separated from the external space. It is possible to effectively block for a long period of time and maintain the airtightness in the wall to prevent the deterioration of the heat insulation function of the entire wall and to prevent the invasion of insects and the like.
In addition, installation work such as air conditioners and replacement work can be easily performed.

  However, when the technique of Patent Document 2 is carried out, the state of the through-holes opened in the wall material is actually not a perfect circle but often deformed or collapsed. If the outer wall material side or the inner wall material side is a through hole with a large diameter, the wall communication pipe material cannot be fixed to the larger through hole and the work may be abandoned. Moreover, even if it can be fixed, there is a problem that when the center of the wall communicating tube is displaced from the center of the through hole, a gap is generated in a part of the through hole and the airtightness is impaired.

  Therefore, the present invention can be easily attached even if the center positions of the through hole of the outer wall member and the through hole of the inner wall member are shifted, and the outer wall member can be reliably attached regardless of the deformation of the through hole or the diameter. Airtight duct structure of hollow wall that can cut off the hollow space between the inner wall material and the inner wall material from the outside space and maintain the airtightness of the hollow wall for a long period of time, and a through duct member used for the duct structure of the hollow wall The purpose is to provide.

  In order to solve the above problems, the airtight duct structure of the hollow wall according to claim 1 of the present invention includes a tube material, a center spacer, an end pressing member, and a through hole provided in the inner wall material and the outer wall material of the hollow wall. The airtight duct structure of the hollow wall which mounts the penetration duct member which consists of is proposed.

The tubular material used in the airtight duct structure of the hollow wall has a length longer than the hollow space between the inner wall material and the outer wall material, and has a tubular expansion / contraction formed with irregularities that will fit within the hollow space when contracted. A front flange and a rear flange each having a diameter larger than the diameter of each through-hole of the hollow wall formed on the outer periphery on both sides of the expansion and contraction portion, and the inner wall material and the outer wall material from the inner periphery to the front of the front flange. And a cylindrical insertion guide portion having a diameter smaller than the diameter of the through-hole protruding longer than the hollow space between the tube and the tube made of a synthetic resin, which is integrally deformed to a thickness that can be flexibly deformed by a finger and can be restored. (1a), a pipe member (1b) that protrudes rearward from the inner periphery of the rear flange of the pipe member and has an insertion portion having a diameter smaller than the diameter of the through-hole, or the length of the insertion portion; Length equal to the wall thickness on either side of the inner wall material or outer wall material And then it and one of the differential write section tube having an outer diameter on the outer circumference of the rear end portion is formed integrally pressing flange of larger diameter than the through holes of the (1c).
The center spacer is formed of an insertion guide portion and an insertion portion of the tube material facing the inner peripheral surface of each through hole so that the centers of the front flange and the rear flange of the tube material overlap the center of each through hole of the hollow wall. It is formed or arranged on the outer peripheral surface.
The end pressing member includes a cylindrical portion provided with an engaging portion that can be fitted to the concave and convex portion inside the tube material at a tip portion, and each through hole of the hollow wall formed on the outer periphery of the rear end of the cylindrical portion. The presser flange portion has a diameter larger than the diameter of the presser flange.

  Then, the through-duct member is attached to the through-hole by inserting the pipe member provided with the center spacer into the through-holes of the inner wall member and the outer wall member while deforming the tube member with a finger, and attaching the leading flange and the rear flange. The inner wall material and the outer wall material are brought into contact with the inner surfaces to block the inner periphery of both through holes, and the protruding portion is cut out from the through hole of the insertion guide part, and the rear flange and / or the insertion The end-pressing member is inserted from the outside of the guide portion and the periphery of the opening is closed from the outside of the through hole, and the airtight duct structure formed can maintain the airtightness in the hollow wall. To do.

  According to a second aspect of the present invention, in the airtight duct structure of the hollow wall according to the first aspect, an airtight sheet is stretched on at least one inner surface of the outer wall material and the inner wall material.

  According to a third aspect of the present invention, in the airtight duct structure of the hollow wall according to the first or second aspect, the wire and the pipe arranged by passing through the through duct member attached to the through hole. The gap between the indoor side and the outdoor side opening formed between them is filled with a filler to block both sides of the through hole.

Invention of Claim 4 is a penetration duct member used for the airtight duct structure of the hollow wall in any one of said Claim 1 to 3, Comprising: The said pipe material has the said inner wall material and outer wall in length A helical bellows-like expansion / contraction part which is longer than a hollow interval with the material and fits in the hollow interval when contracted, or corrugated tubular corrugated in parallel, and each through-hole of the hollow wall formed on the outer periphery on both sides of the expansion / contraction part A front flange and a rear flange each having a diameter larger than the diameter of the front flange, and a cylindrical shape having a diameter smaller than the diameter of the through-hole protruding longer from the inner periphery of the front flange toward the front than the hollow space between the inner wall member and the outer wall member A synthetic resin tube (1a) integrally formed to a thickness that can be flexibly deformed and restored by the force of a finger, and protrudes backward from the inner periphery of the rear flange of the tube and the through hole Integrated insertion part with a diameter smaller than the diameter of The pipe (1b) or the length of the insertion portion is equal to the wall thickness of either the inner wall material or the outer wall material, and the outer diameter is on the outer periphery of the rear end portion of the insertion portion. One of the pipes (1c) integrally formed with a presser flange having a diameter larger than each through hole.
The center spacer is formed of an insertion guide portion and an insertion portion of the tube material facing the inner peripheral surface of each through hole so that the centers of the front flange and the rear flange of the tube material overlap the center of each through hole of the hollow wall. It is formed or arranged on the outer peripheral surface.
The end pressing member includes a cylindrical portion provided with an engaging portion that can be fitted to the concave and convex portion inside the tube material at a tip portion, and each through hole of the hollow wall formed on the outer periphery of the rear end of the cylindrical portion. It is characterized by comprising a pressing flange portion having a diameter larger than the diameter of the tube, and combining the pipe material, the center spacer and the end pressing member.

  Invention of Claim 5 is the penetration duct member of the said Claim 4, Comprising: The center spacer of this penetration duct member was fixed to the outer peripheral surface of the insertion part or insertion guide part of a pipe material Or it is a some annular body, It is characterized by the above-mentioned.

  Invention of Claim 6 is the penetration duct member of the said Claim 4, Comprising: The center spacer of this penetration duct member can be adhere | attached on the outer peripheral surface of the insertion part or insertion guide part of a pipe material It is a single or a plurality of annular bodies.

  The invention according to claim 7 is characterized in that, in the above invention, the annular body is made of a flexible material.

  The invention according to claim 8 is the penetrating duct member according to claim 4, wherein the center spacer of the penetrating duct member is substantially the same in the circumferential direction on the outer peripheral surface of the insertion portion of the tube material or the insertion guide portion. It is a rod-shaped, plate-shaped or spherical projecting body provided with a plurality of projections at intervals.

  Invention of Claim 9 is the penetration duct member of the said Claim 4, Comprising: The center spacer of this penetration duct member is cyclic | annular form which can be mounted | worn with the outer peripheral surface of the insertion part of a pipe material, or an insertion guide part A plurality of rod-like, plate-like, or spherical projections are provided on the outer periphery of the body so as to protrude at substantially equal intervals in the circumferential direction.

  According to a tenth aspect of the present invention, the center spacer according to the eighth or ninth aspect is a rod-like or plate-like protrusion, and the protrusion is made of metal or resin, and the protrusion height is adjusted by bending. It is possible to do this.

  According to the eleventh aspect of the present invention, the center spacer according to the eighth or ninth aspect is a rod-shaped protrusion, and the base and the tip of the protrusion can be separated from each other and can be screwed to each other. The male and female screws are formed, and the projecting height can be adjusted by rotating the screwed tip.

  A twelfth aspect of the present invention is the through duct member according to any one of the fourth to eleventh aspects, wherein an inner peripheral groove is formed inside the front flange and the rear flange of the pipe, and the inner periphery is formed. A flexible ring-shaped filling member having elasticity that can be filled in the groove is fitted.

  The invention according to claim 13 is the above invention, wherein the ring-shaped filling member fitted in the inner circumferential groove is fixed in the inner circumferential groove on the half circumferential side, and the other circumferential side is in the inner circumferential groove. It is mounted so that it can be pulled out of the inner circumferential groove without being fixed to the outer circumferential groove.

  Invention of Claim 14 is the penetration duct member in any one of the said Claims 4-13, Comprising: The edge part pressing member of this penetration duct member is the insertion part or insertion guide part of a pipe material A cylindrical portion having an outer diameter substantially equal to the inner peripheral diameter of the inner wall material and longer than the wall thickness of the inner wall material and the outer wall material, and an outer diameter larger than the diameter of the through hole formed in the rear end portion of the cylindrical portion A flange portion, an engagement portion projecting so as to be able to fit to the irregularities inside the tube material formed at the front end portion of the cylindrical portion, and the engagement portion from the front end portion spaced apart in the circumferential direction of the cylindrical portion. It is characterized by comprising a split groove that reaches a deeper part than the position where the joint is located.

  According to a fifteenth aspect of the present invention, in the above invention, the end pressing member includes a male screw portion formed on the outer periphery of the cylindrical portion and a female screw formed on the inner peripheral surface of the flange portion. It is characterized by being screwed to the part.

  According to a sixteenth aspect of the present invention, in the above invention, the end pressing member is formed with an insertion groove into which a cut portion of the insertion guide portion of the tube material can be inserted at the front end portion of the female screw portion.

The airtight duct structure of the hollow wall of the present invention can be deformed thinly so that a flexible tube or the like can be crushed by a finger when fitted into the through-holes of the inner wall member and the outer wall member. Can be easily inserted into the hollow space from a through hole in one direction of the inner wall member or the outer wall member.
And it can mount | wear easily also to each through-hole from which the center has shifted | deviated large.
When inserting the pipe material, the insertion guide part is longer than the hollow space between the outer wall material and the inner wall material, so the tip of the insertion guide part penetrates from the through hole in the front, so it can be easily from one direction of the wall It becomes possible to install.
As a result, the duct installation work is facilitated, and the working time can be greatly shortened.

And the front flange and the rear flange are made of the outer wall material and the inner wall material by the restoring force of the contracted bellows tubular expansion and contraction portion between the front flange and the rear flange of the through duct member inserted into the through hole of the hollow wall. The inner surface of the hollow wall is pressed, and even if there is a large gap between the through hole and the tube material, the center of the front flange and the rear flange of the tube material is overlapped with the center of each through hole of the hollow wall by the center spacer. Therefore, the periphery of the opening of the through hole can be reliably shielded from the inside of the wall by the front flange and the rear flange.
Furthermore, the periphery of the opening of the through hole is shielded from the outside of the wall by the end pressing member, so that there is no gap between the front flange and the rear flange around the through hole, and the airtightness of the hollow space is reliably maintained. It becomes possible.

  In the second aspect of the invention, the airtight sheet prevents the passage of air and water vapor in the wall, and the airtightness of the hollow space can be further enhanced.

  In the third aspect of the invention, the space between the indoor side and the outdoor side is blocked by the filler packed in the gap between the indoor side and the outdoor side opening, and the air does not pass between the outside and the outside of the outdoor side. It becomes possible to prevent the influence of the temperature on the indoor side.

  In the invention according to claim 4, since the expansion / contraction part of the pipe material of the through duct member is a bellows tube that undulates spirally or in parallel, the reliable expansion / contraction and the restoring force of the expansion / contraction part are maintained. When mounted, the rear flange and the front flange can keep pressing the inner surfaces of the outer wall material and the inner wall material, thereby maintaining airtightness.

In invention of Claims 5-11, by the various center spacers of the through duct member interposed between the through hole and the pipe material, the front flange and the rear flange of the pipe material are formed at the center of each through hole of the hollow wall. Since the centers are overlapped, any of them can freely correspond to the sizes of various through holes.
That is, even if the center spacer is one of them, the versatility can be enhanced corresponding to the diameters of various large and small through holes.

  Of these, the invention according to claim 6 can be attached to and detached from the outer peripheral surface of the insertion portion of the pipe material or the insertion guide portion in accordance with the diameter of the through-hole, and can be replaced with an optimum size.

  Further, in the invention according to claim 8, the rod-like and plate-like protrusions can be easily cut from the middle according to the diameter of the through hole, and can be used by adjusting the protrusion height promptly on site. Become.

  Furthermore, in the invention described in claim 10, by making the material of the projecting body made of metal or resin, the projecting body can be easily bent, and the projecting height can be easily adjusted without being cut off.

  In the invention according to claim 11, the protrusion height of the tip of the protrusion can be easily adjusted by rotating the screw.

  In the invention described in claim 12, the inner flange of the tubular material is filled with the ring-shaped filling member having elasticity in the inner circumferential groove of the rear flange and the leading flange of the tubular material. On the other hand, the abutting surfaces of the front flange and the rear flange of the pipe material can be pressed so as to conform to each other, and it is possible to reliably prevent a gap from being generated between the front flange and the rear flange and the inner surface of the hollow wall.

  In the invention described in claim 13, since the ring-shaped filling member is fixed in the inner circumferential groove only on the half-circumferential side, when the pipe material is attached to the through hole, the other half-circumferential side is removed from the inner circumferential groove. By pulling out once, the front flange and the rear flange with a large diameter can be crushed and deformed greatly, and by crushing the small front flange and the rear flange, it can be easily inserted into the through-hole, and after insertion, the ring shape The filling member can be mounted in a circular shape in the inner circumferential groove. Thus, the attachment of the pipe material to the through hole can be performed very easily.

In the invention described in claim 14, after attaching the pipe material to the through hole, the end pressing member is fitted, so that the outer wall material around the through hole is sandwiched between the front flange and the rear flange from both sides of the inner wall material, It becomes possible to securely fix the tube material to the through hole.
At that time, the mounted center spacer can be completely covered from the outside.

In the invention described in claim 15, the insertion length of the cylindrical portion of the end pressing member can be freely adjusted, and the flange portion can be attached to the outside of the wall material even if it is loosened after being attached to the through hole. It can be screwed so as to be in close contact with the surface, and the tube material can be more securely fixed to the through hole, so that the airtightness in the hollow wall can be more reliably maintained.
Further, even if the thickness of the wall material of the through-hole portion is greatly different, the actual position of the wall material is changed by moving the position of the flange member screwed to the cylindrical body within the length range of the male screw portion. It is possible to adjust the thickness freely.

  In the invention described in claim 16, when cutting the insertion guide portion with a scissors, the cut end portion of the insertion guide portion may protrude from the surface of the wall. By avoiding the flange portion from hitting the cut end portion of the insertion guide portion by the groove, the flange portion of the end pressing member can be screwed in close contact with the outer surface of the wall member.

As described above, according to the present invention, even if the size of the through hole is greatly different, the outer wall material and the hollow space of the inner wall material can be surely blocked from the external space corresponding to the size freely. It becomes like this.
As a result, moisture intrusion into the hollow space is prevented and the occurrence of condensation is prevented. It will be possible to contribute to the maintenance of the global environment by realizing significant savings in air-conditioning costs and maintaining the consumption of heat energy.

(A) of the pipe material of the penetration duct member of the present invention is a perspective view, and (b) is a vertical side view. (A) of the pipe material of the penetration duct member of another form is a perspective view, (b) is a vertical side view. Moreover, (b) of the pipe material of another form of the through duct member is a perspective view, and (b) is a longitudinal side view. (A) of the end pressing member is a longitudinal perspective view, and (b) is a perspective view. The center spacer (A) is a perspective view, and (B) is a vertical perspective view. (A) of a ring-shaped filling member is a perspective view, and (b) is a longitudinal perspective view. (A) shows the state before attaching the center spacer to the pipe material of the through duct member, (b) shows the state in which the through duct member is inserted into the hollow wall, FIG. 5C is a vertical side view showing a state in which the through duct member is completely attached to the hollow wall. FIG. 7 shows the installation process of the through duct member of the airtight duct structure subsequent to FIG. 7, (2) shows a state before installing the end pressing member, and (e) shows a state where the installation of the through duct member to the hollow wall is completed. It is each vertical side view. It is a vertical side view which shows the airtight duct structure of another form. It is a vertical side view which shows the airtight duct structure equipped with the edge part pressing member of another form. It is a vertical side view which shows the airtight duct structure equipped with the edge part pressing member of another form. It is a vertical side view which shows the airtight duct structure of another form. It is a vertical side view which shows the airtight duct structure of another form. FIG. 5 shows a process of installing a through duct member of another form of an airtight duct structure, in which (a) shows a state where the through duct member is inserted into the hollow wall, and (b) shows a case where the pipe material of the through duct member is attached to the hollow wall. FIG. 6 is a longitudinal side view showing a state before mounting the end pressing member, and (C) showing a state where the mounting of the through duct member to the hollow wall is completed. It is a vertical side view which shows the airtight duct structure of another form. (A) is each perspective view which shows the penetration duct member of the state which attached the center spacer integral with a pipe material, and (B) attached the annular center spacer to the pipe material. (A) is a rod-shaped protrusion, (b) is a bent rod-shaped protrusion, (c) is a bent plate-shaped protrusion, (2) is a rod-shaped protrusion with an adjustable protrusion height, () Is a spherical protrusion, and (f) is a perspective view showing a center spacer of a different shape that is annular and thin. It is a vertical side view which shows the airtight duct structure after the air-conditioner installation which closed the both sides of the penetration duct member with the filler. It is a vertical side view which shows the example which is not equipped with the center spacer.

As shown in FIG. 18, the present invention relates to a through-hole for piping or wiring of equipment such as an air conditioner provided on a hollow wall composed of an inner wall material A and an outer wall material B spaced apart from each other. The present invention relates to a duct structure for maintaining internal airtightness and a through duct member used for the duct structure.
FIG. 18 shows that a pipe 48 such as a refrigerant pipe and a water pipe connecting the indoor air conditioner 49 and the outdoor unit 50, an electric cord 51, and the like pass through the wall.
The hollow wall is provided with an inner wall material A such as a gypsum board on the indoor side, and an outer wall material B such as a cement-based outer wall material on the outside with a space between the inner walls. In many cases, the outer wall material B is further laminated with a plurality of various plate materials.

And the airtight sheet | seat C is stretched inside the outer wall material B, as shown to (B) of FIG.
This airtight sheet C blocks the movement of air and water vapor in the wall, prevents the heat insulation material such as glass wool filled in the hollow space from deteriorating due to condensed water, and intrusions of air having a temperature difference from the room. Provided to prevent.
The two through-holes a and b provided in the inner wall material A and the outer wall material B are such that, as shown in FIG. However, there are various differences depending on the actual construction site, such as when the holes are holes of different diameters or when the center positions are different.

Tubular pipe ducts are attached to the through holes a and b through the walls, so that the inside of the hollow wall and the outside thereof are blocked, and the airtightness inside the hollow wall can be maintained.
The present invention is a duct structure capable of maintaining the airtightness of the various hollow walls, and this structure will be described in detail below together with a through duct member used for the duct structure.

  As shown in FIG. 14, the airtight duct structure of the hollow wall according to the present invention includes the pipe 1 in the through-holes a and b where the centers provided in the inner wall material A and the outer wall material B of the hollow wall are greatly displaced up and down. This is a hollow wall airtight duct structure formed by mounting a through duct member comprising center spacers 2 and 3 and an end pressing member 8.

Among the through duct members, the tube material 1 has the following three forms (1a) (1b) (1c).
As shown in FIG. 1, the tubular material (1a) has a length longer than the hollow space between the inner wall material A and the outer wall material B, and is formed with irregularities that have a length that fits in the hollow space when contracted. A front flange 6 and a rear flange 5 each having a diameter larger than the diameter of each of the through holes a and b of the hollow wall formed on the outer periphery of both sides of the stretchable part 4, and the inside of the front flange 6 The cylindrical insertion guide portion 7 having a diameter smaller than the diameter of the through hole b protruding longer than the hollow space between the inner wall material A and the outer wall material B from the periphery to the front is flexibly deformed by the force of a finger, and It is made of synthetic resin that is integrally formed to a thickness that can be restored.

  Further, as shown in FIG. 2, the pipe member (1b) is integrally formed with an insertion portion 15 protruding rearward from the inner periphery of the rear flange 5 of the pipe member (1a) and having a diameter smaller than the diameter of the through hole a. Formed.

  Further, as shown in FIG. 3, the pipe material (1c) has a length equal to the wall thickness of either the inner wall material A or the outer wall material B in the length of the insertion portion 15 of the pipe material (1b). A presser flange 16 having an outer diameter larger than that of each through hole b is integrally formed on the outer periphery of the rear end portion of the insertion portion 15.

  Further, the center spacers 2 and 3 (shown in FIGS. 5 (a) and 5 (b)) are formed in the through holes a and b of the hollow wall as shown in FIGS. 9, 12, 13, and 14, respectively. On the outer peripheral surface of the insertion guide portion 7 and the insertion portion 15 of the tube material 1 facing the inner peripheral surface of each through hole a, b so that the centers of the front flange 6 and the rear flange 5 of the tube material 1 overlap the center of Form or arrange.

  Further, the end pressing member 8 (shown in FIG. 4) includes a cylindrical portion 9 provided with an engaging portion 10 that can be fitted to the concave and convex portions inside the tube material 1 at the front end, and a rear end of the cylindrical portion 9. The presser flange portion 12 having a diameter larger than the diameters of the through holes a and b of the hollow wall formed on the outer periphery of the hollow wall.

  Then, as shown in FIG. 14, the through-duct member is mounted in the through-holes a and b while the inner wall material A and the outer wall material are deformed while the tube material 1 including the center spacers 2 and 3 is deformed with a finger. B is inserted into each through hole b of B, the front flange 6 and the rear flange 5 are brought into contact with the inner surfaces of the inner wall material A and the outer wall material B to block the inner sides of both through holes a and b, and the insertion guide Projecting portions are cut out from the through holes a and b of the portion 7, and the end pressing member 8 is inserted from the outside of the insertion portion 15 and the insertion guide portion 7 to outside the through holes a and b. Then, the periphery of the opening is closed so that the airtightness in the hollow wall can be maintained.

Next, a through duct member used in such a hollow wall airtight duct structure will be described.
As shown in FIG. 14, the members used for the airtight duct structure of the hollow wall are mounted in the through holes a and b provided in the hollow wall. It is a member having a relationship with the structure and its size.

  The through-duct member includes a synthetic resin pipe 1 (shown in FIGS. 1, 2 and 3) and a through hole a and b provided in the inner wall material A and the outer wall material B of the hollow wall and attached thereto. Center spacers 2 and 3 (shown in FIG. 5) for bringing the tube material 1 to the center of the respective through holes a and b, and fitting the tube to the end from the outside of the center spacers 2 and 3 to hide the center spacers 2 and 3 And an end pressing member 8 (shown in FIG. 4) for fixing 1 to the through holes a and b.

First, the tube material 1 will be described.
The tube material 1 is a tube material 1 in which concaves and convexes made of synthetic resin made of a synthetic resin material such as polyethylene and synthetic rubber are integrally formed. As shown in FIG. 1, the inner wall material A and the outer wall material of a hollow wall Between the front flange 6 and the rear flange 5 that abut against the hollow inner surface of B, the expansion / contraction part 4 that expands and contracts each surface in the hollow so that it can be pressed, and a cylindrical insertion that protrudes from the inner periphery of the front flange 6 It consists of a guide part 7.
The stretchable portion 4 is formed longer than the hollow space between the inner wall material A and the outer wall material B, and the length is shortened so that the inner wall material A and the outer wall material B can be brought into contact with each other in a pressed state. Further, the insertion guide portion 7 is formed in a cylindrical shape having a diameter smaller than the diameter of the through hole b, and the length thereof is longer than the length obtained by adding the inner wall material A or the outer wall material B to the hollow space, and is easy The tube member 1 is inserted into the through hole b so that the tube material 1 can be easily pulled out from the other without deformation.

  As shown in FIGS. 1, 2, and 3, the expansion / contraction part 4 is formed in a bellows shape that undulates spirally or in parallel, and the front flange 6 and the rear flange 5 are inner circumferences that form deep cavities that open inside. A groove is formed, and ring-shaped filling members 13 and 14 made of foamed resin having elasticity shown in FIGS. 6A and 6B are filled in the cavity. The ring-shaped filling members 13 and 14 support the side surfaces of the front flange 6 and the rear flange 5 from the inside so as not to be recessed, and each of the through holes a are in contact with the hollow inner surfaces of the inner wall material A and the outer wall material B. , B can be deformed and brought into close contact according to the shape of the inner circumference. The front flange 6 and the rear flange 5 are pressed against and closely contacted with the inner surface around the through-hole by backing up the ring-shaped filling members 13 and 14, and the heat insulation effect between the hollow space and the outside can be enhanced.

For example, when the diameters of the through holes a and b are 65 mm, the stretchable part 4 between the rear flange 5 and the front flange 6 has an inner diameter of 65 mm and an outer diameter of approximately 65 mm. 80 mm is recommended.
And, the length is longer than the interval between the outer wall material B and the inner wall material A, and is a length that fits within the interval when contracted, and can be flexibly deformed and restored by the force of a finger. The entire tube 1 is formed of polyethylene having a thickness of.

Also, the ring-shaped filling members 13 and 14 (shown in FIGS. 6A and 6C) fitted in the inner circumferential groove are fixed in the inner circumferential groove on the half circumferential side, and the other half circumferential side Can be pulled out of the inner peripheral groove without being fixed in the inner peripheral groove.
In this embodiment, since the ring-shaped filling member is fixed in the inner circumferential groove only on the half circumference side, when the pipe material is attached to the through hole, the other half circumference side is once pulled out from the inner circumferential groove, The large front flange and the rear flange can be crushed and greatly deformed.
Then, the front flange and the rear flange are crushed small so that they can be easily inserted into the through-holes, and even after insertion, the ring-shaped filling member can be mounted in a circular shape in the inner circumferential groove.

There are three forms (1a), (1b), and (1c) on the rear flange 5 side of the pipe material 1, and each form will be described in detail below.
In the form of the pipe material (1a) shown in FIG.
Further, in the form of the pipe member (1b) shown in FIG. 2, an insertion portion 15 that protrudes rearward from the inner periphery of the rear flange 5 and has a diameter smaller than the diameter of the through hole a is integrally formed.
Furthermore, the form of the pipe member (1c) shown in FIG. 3 is such that the length of the insertion portion 15 is equal to the wall thickness on one side of the displacement of the inner wall material A or the outer wall material B, and the insertion portion 15 A presser flange 16 having an outer diameter larger than each of the through holes a is integrally formed on the outer periphery of the rear end portion.

Each of these forms has a different function with respect to the through hole a of the inner wall material A as follows.
In the pipe material (1a) shown in FIG. 1, the rear flange 5 abuts against the wall material around the through hole a, but the position is not fixed.
Moreover, although the insertion part 15 is inserted in the said through-hole a and a position is restrained with respect to the said through-hole a, the pipe material (1b) shown in FIG. 2 is not fixed.
Furthermore, although the pipe material (1c) shown in FIG. 1 is fixed by sandwiching the inner wall material A between the presser flange 16 and the rear flange 5, the fixing of the center position is restricted, but cannot be sufficiently performed.

  Therefore, in the pipe materials (1a) and (1b) in the form shown in FIG. 1 and FIG. 2, it is necessary to fix by the end pressing member 8, but in the pipe material (1c) in the form shown in FIG. As shown in (e), since it is fixed by the presser flange 16, it may not be necessary to use the end presser member 8.

Next, the center spacers 2 and 3 will be described.
The center spacers 2 and 3 face the inner peripheral surfaces of the through holes a and b so that the centers of the front flange 6 and the rear flange 5 of the pipe 1 overlap the centers of the through holes a and b of the hollow wall. The tube material 1 is formed integrally with the outer peripheral surfaces of the insertion guide portion 7 and the insertion portion 15 (shown in FIG. 16A) or separated from the tube material 1. It can be arranged on the outer peripheral surfaces of the guide part 7 and the insertion part 15 (shown in FIG. 16B).

The center spacers 2 and 3 can have the following various forms.
For example, as shown in (a), (b) of FIG. 6 and (f) of FIG. 17, the single or plural annular bodies fixed to the outer peripheral surface of the insertion portion 15 or the insertion guide portion 7 of the tube material 1. 2 and 3 are possible. The annular bodies 2 and 3 are preferably made of a foamed resin flexible material because they can be easily deformed and mounted.

  Further, the center spacers 2 and 3 are rod-like protrusions 38 (see FIG. 17A) that are provided with a plurality of protrusions on the outer peripheral surface of the insertion portion 15 or the insertion guide portion 7 of the tube material 1 at substantially equal intervals in the circumferential direction. ), A plate-like protrusion 41 (shown in (c) of FIG. 17), or a spherical protrusion 45 (shown in (e) of FIG. 17).

Further, the center spacers 2 and 3 are annular bodies 32 (shown in FIG. 17 (A)) and 33 (shown in FIG. B), 34 (shown in (c) of FIG. 17), 35 (shown in (e) of FIG. 17), and 36 (shown in (e) of FIG. 17) at substantially equal intervals in the circumferential direction. It is also possible to use a plurality of rod-like protrusions 38 and 40 and a plate-like protrusion 41 or a spherical protrusion 45.
As shown in FIG. 17 (a), the annular body can be mounted not only from the end of the tube 1 by opening a cut 39 in a part of the recoverable annular body 32 but from the side by opening the cut 39. Then, as shown in (b) of FIG. 16, it is possible to attach to the concave portion outside the insertion portion 15 in the form of the pipe member 1 c provided with the presser flange portion 16.

The center spacers 2 and 3 are rod-like protrusions 38 and 40 (shown in FIGS. 17A and 17B) or plate-like protrusions 41 (shown in FIG. 17C). The protrusions are made of metal or resin. Further, as shown in FIGS. 17 (B) and 17 (C), the protrusion height can be adjusted by bending.
Further, as shown in FIG. 17E, in the case of the spherical protrusion 45, a string-like annular body 44 may be connected in a beaded manner.
In addition, as shown in FIG. 17F, it is also possible to provide one or more plate-like annular bodies 46 and 47 on the outer peripheral surface of the annular body 37 as the center spacer.

  Further, as shown in FIG. 17B, the center spacers 2 and 3 are rod-shaped protrusions, and the base 42 and the tip 43 of the protrusions are separated from each other and screwed to each of the separate shafts. It is also possible to form a male and female screw that can be mated, and to adjust the protruding height by rotating the screwed tip.

  In the various center spacers 2 and 3, as shown in FIGS. 9, 10, 11, 12, 13, and 14, the leading flange 6 of the pipe 1 is formed at the center of each through hole a, b of the hollow wall. And it attaches so that the center of the rear flange 5 may overlap.

  However, when the center spacers 2 and 3 are not used, as shown in FIG. 19, the center of the front flange 6 and the rear flange 5 approaches one of the upper, lower, left and right sides of the through holes a and b. A gap may be generated in a part of the peripheral surface of the tube, or the tube material 1 may be removed from the through holes a and b, and the outside air may pass as shown by the thick arrows, and the wall surface may not be useful for heat insulation. is there.

  Therefore, in the present invention, the presence of the center spacers 2 and 3 is extremely important in order to ensure versatility with respect to various through holes.

Next, the end pressing member 8 will be described in detail.
As shown in FIGS. 4A and 4B, the end pressing member 8 includes a cylindrical portion 9 provided with an engaging portion 10 that can be fitted to the concave and convex portions inside the tube material 1 at the distal end portion. And a presser flange portion 12 having a diameter larger than the diameters of the through holes a and b of the hollow wall formed on the outer periphery of the rear end of the cylindrical portion 9.
A split groove 11 is formed in the cylindrical portion 9 so as to reach a portion deeper than the position where the engaging portion 10 is located from the front end portion with an interval in the circumferential direction. When the split groove 11 is inserted into the tube material 1, the engaging portion 10 hits the convex portion of the tube material 1, the engaging portion 10 is elastically deformed and inserted smoothly, and hits the concave portion to the outside. Open and engage.

The size of the outer diameter of the presser flange portion 12 is usually the case where the diameter of the through hole is 65 mm for an air conditioner. Therefore, in the through hole of that size, the presser flange 12 has the front flange 6 and the rear flange 5. In consideration of the deformation of the through hole, for example, about 80 mm to 100 mm is sufficient in consideration of the deformation of the through hole. However, in the present invention, when both the through holes are holes having different diameters, It is possible to cope with various diameters of both through-holes, such as when they are different.
Therefore, when the through hole is made to correspond in the range of 60 mm to 120 mm, the diameter of the presser flange 12 is the same as that of the front flange 6 and the rear flange 5 and is about 140 mm larger than the larger diameter. good.
The presser flange 12 may have various designs close to a circle such as six shapes other than a circle depending on the situation of the mounting location.

  As shown in FIGS. 7A and 7B, the pipe member 1 provided with the center spacers 2 and 3 is deformed with a finger, as shown in FIGS. 7A and 7B. However, as shown in FIG. 7C, the front flange 6 and the rear flange 5 are inserted into the inner walls A and B of the inner wall material A and the outer wall material B by inserting them into the through holes a and b of the inner wall material A and the outer wall material B, respectively. To close the insides of both through holes a and b, and as shown in FIG. 8 (2), the protruding part is cut out from the through hole b of the insertion guide part 7 and the difference The end pressing member 8 is inserted from the outside of the insertion portion 15 and the insertion guide portion 7 to close the outside of the through-hole b as shown in FIG. Can be held.

  Then, as shown in FIG. 18, a gap between the indoor side and the outdoor side opening formed between the wires and pipes arranged through the through duct members mounted in the through holes a and b. Is filled with a filler 52 to close the openings around both sides of the through holes a and b. As a result, the indoor and outdoor spaces and the hollow space in the wall are more reliably blocked, and the heat insulation property of the wall and the condensation inside the wall are prevented.

The structure showing various types of usage of the end pressing member 8 will be described with reference to an example in which the ring-shaped filling members 13 and 14 are fitted in the inner circumferential groove. FIG. 8, FIG. 9, FIG. It is shown in FIG. 12, FIG. 13 and FIG.
FIG. 8 (e) shows a usage example of the tube material 1c provided with the presser flange 16 in the insertion portion 15.
For this purpose, one end portion is pressed by the presser flange 16, and the end presser member 8 is not used on the presser flange 16 side, but only on the insertion guide portion 7 side.
In FIG. 9, the end pressing member 8 is used on both sides of the tube material 1c, and the engaging portion 10 of the end pressing member 8 is fitted in the inner circumferential groove of the tube material 1c so that the tube material 1c is mounted on both sides. It shows that it is fixed.
Further, in FIG. 12, the end pressing member 8 is used on both sides of the tube material 1c, and on the one pressing flange 16 side, the engaging portion 10 is fitted in the inner peripheral groove of the tube material 1c to fix the tube material 1c. On the other side of the insertion guide portion 7, it is shown that the engaging portion 10 is fitted to the concavo-convex portion of the intermediate portion on the bellows-shaped elastic portion 4 of the tubular material 1 c and the tubular material 1 c is fixed.

Further, in FIG. 13, the end pressing member 8 is used on both sides of the tube material 1 c provided with the pressing flange 16, and the engaging portion 10 is formed on the uneven portion of the intermediate portion from the both sides of the tube material 1 c to the bellows tubular expansion / contraction part 4. It shows that the pipe 1c is fixed by fitting.
Further, in FIG. 15, the pipe member 1 b without the presser flange 16 and provided with the insertion portion 15 is used, and the engaging portion 10 is fitted to the concavo-convex portion of the intermediate portion from the both sides of the pipe member 1 b to the bellows tubular expansion / contraction part 4. It shows that 1c is fixed.
In FIG. 14, the presser flange 16 also uses the tube 1 a without the insertion portion 15, and the engaging portion 10 is fitted to the concave and convex portion of the intermediate portion from the both sides of the tube 1 a to the bellows-shaped telescopic portion 4 to fix the tube 1 c. It has been shown.

Further, as shown in FIGS. 11A, 11B, and 11C, the end pressing member 8 has an engaging portion 28 that can be fitted to the concave and convex portion inside the tube material 1 at the distal end portion. A cylindrical portion 26 provided, and a presser flange portion 27 having a diameter larger than the diameters of the through holes a and b of the hollow wall formed on the outer periphery of the rear end of the cylindrical portion 26.
In addition, a split groove 29 is formed in the cylindrical portion 26 so as to reach a portion deeper than the position where the engaging portion 28 is located from the front end portion at an interval in the circumferential direction. When this is inserted into the tube material 1, the engagement portion 28 is fitted into the concave and convex portion inside the tube material 1 and is difficult to be removed, and the through duct is securely fixed to the wall.
Such an end pressing member 8 includes a cylindrical portion 26 and a flange portion 27, a male screw portion 30 formed on the outer periphery of the cylindrical portion 26, and a female screw portion 31 formed on the inner peripheral surface of the flange portion 27. A form that can be screwed and separated is possible.

Further, as shown in FIGS. 10A, 10B and 10C, the end pressing member 8 is provided with an engaging portion 19 which can be fitted into the concave and convex portion inside the tube material 1 at the tip portion. The cylindrical portion 17 and a presser flange portion 18 having a diameter larger than the diameters of the through holes a and b of the hollow wall formed on the outer periphery of the rear end of the cylindrical portion 17.
In addition, a split groove 20 is formed in the cylindrical portion 17 so as to reach a portion deeper than the position where the engaging portion 19 is located from the front end portion at an interval in the circumferential direction.
The cylindrical portion 17 and the flange portion 18 are separated by a male screw portion 25 formed on the outer periphery of the cylindrical portion 17 and a female screw portion 24 formed on the inner peripheral surface of the flange 21 of the flange portion 18 so that they can be screwed together. An insertion groove 23 into which a cut portion of the tube insertion guide portion 7 can be inserted is formed in the front end portion of the female screw portion 22.

The material of each of the end pressing members 8 can be made of the same resin as the tube material 1 or a different plastic, and a material corresponding to the size of the tube material 1 is prepared and used in combination with the tube material 1 as appropriate. be able to.
In any of the forms shown in FIGS. 8, 9, 10, 11, 12, 13, and 14, the center spacers 2 and 3 are hidden from the outside and cannot be seen. It can fix so that the pipe material 1 may not produce a clearance gap in the circumference | surroundings.

  Then, as shown in FIG. 18, the openings on the indoor side and the outdoor side in the pipe material 1 formed between the pipes and the pipes arranged by passing through the pipe material 1 attached to both through holes a and b. The space 52 is filled with the putty 52, the indoor side and the outdoor side are shut off, and the installation work of the duct such as an air conditioner is completed.

  The present invention is an airtight duct structure of a hollow wall in which a through-duct member composed of a tube material, a center spacer, and an end pressing member is attached to a through-hole provided in an inner wall member and an outer wall member of a hollow wall. In addition to the wall surface, when a through-hole is provided in a portion having a double structure with a gap between the floor surface and the ceiling surface, it can be used for the purpose of maintaining the airtightness of the inside.

DESCRIPTION OF SYMBOLS 1 Tubing material 1a Tubing material 1b Tubing material 1c Tubing material 2 Center spacer 3 Center spacer 4 Expansion / contraction part 5 Rear flange 6 Front flange 7 Insertion guide part 8 End pressing member 9 Cylindrical part 10 Engaging part 11 Split groove 12 Flange part 13 Ring-shaped filling Member 14 Ring-shaped filling member 15 Insertion part 16 Presser flange part 17 Cylindrical part 18 Presser flange part 19 Engagement part 20 Split groove 21 Flange part 22 Female screw part 23 Presser flange part 24 Female screw 25 Male screw part 26 Male screw cylinder Part 27 Female thread flange part 28 Engagement part 29 Split groove 30 Male thread 31 Female thread 32 Annular body 33 Annular body 34 Annular body 35 Annular body 36 Annular body 37 Annular body 38 Rod-shaped protrusion 39 Cut 40 Rod-shaped protrusion 41 Plate body protrusion 42 Base portion 43 of rod-shaped protrusion body Tip portion of rod-shaped protrusion body
44 String-shaped annular body 45 Spherical projecting body 46 Plate-shaped annular body 47 Plate-shaped annular body 48 Pipe 49 Indoor unit 50 Outdoor unit 51 Electrical cord 52 Putty A Inner wall material B Outer wall material C Airtight sheet a Through hole b Through Hole

Claims (16)

A hollow wall airtight duct structure in which a through-duct member composed of a tube material, a center spacer, and an end pressing member is attached to a through-hole provided in an inner wall material and an outer wall material of a hollow wall,
The tubular material is longer than the hollow space between the inner wall material and the outer wall material, and has a tubular stretchable part formed with irregularities that will fit within the hollow space when contracted, and outer peripheries on both sides of the stretchable part. The front flange and the rear flange each having a diameter larger than the diameter of each through-hole of the hollow wall formed on the front wall, and the through-hole protruding longer from the inner periphery of the front flange toward the front than the hollow space between the inner wall material and the outer wall material A synthetic resin pipe (1a) in which a cylindrical insertion guide portion having a diameter smaller than the diameter of the hole is deformed flexibly with the force of a finger and integrally formed to a recoverable thickness, and a rear flange of the pipe A tube material (1b) that protrudes rearward from the inner periphery and has an insertion portion having a diameter smaller than the diameter of the through hole, or the length of the insertion portion is set to either the inner wall material or the outer wall material. And the outer diameter on the outer periphery of the rear end of the insertion part Is a tube material (1c) integrally formed with a presser flange having a larger diameter than each of the through holes,
The center spacer is formed of an insertion guide portion and an insertion portion of the tube material facing the inner peripheral surface of each through hole so that the centers of the front flange and the rear flange of the tube material overlap the center of each through hole of the hollow wall. Formed or arranged on the outer peripheral surface,
The end pressing member includes a cylindrical portion provided with an engaging portion that can be fitted to the concave and convex portion inside the tube material at a tip portion, and each through hole of the hollow wall formed on the outer periphery of the rear end of the cylindrical portion. Consisting of a presser flange with a diameter larger than the diameter of
The through-duct member is attached to the through-hole by inserting the pipe member having the center spacer into the through-holes of the inner wall member and the outer wall member while deforming the tube member with a finger, and attaching the leading flange and the rear flange to the inner wall. The inner periphery of both through holes is closed by abutting against the inner surfaces of the material and the outer wall material, and the projecting portion is cut out from the through hole of the insertion guide part, and the rear flange and / or the insertion guide part A hollow wall airtight duct structure in which the end pressing member is inserted from the outside of the through hole and the periphery of the opening is closed from the outside of the through hole so that the airtightness in the hollow wall can be maintained.   The airtight duct structure of the hollow wall according to claim 1, wherein an airtight sheet is stretched on the inner surface of at least one of the outer wall material and the inner wall material. .   3. The airtight duct structure of a hollow wall according to claim 1 or 2, wherein the indoor side and the outdoor side formed between the wires and pipes arranged through the through duct member attached to the through hole. A hollow-walled airtight duct structure in which a gap is filled in an opening to close both sides of a through hole. It is a penetration duct member used for the airtight duct structure of the hollow wall in any one of Claim 1 to 3, Comprising: The said pipe material shortened longer than the hollow space | interval of the said inner wall material and an outer wall material. A helical flange or a bellows tubular expansion / contraction that undulates in parallel, sometimes having a length that fits in the hollow space, and a tip flange having a diameter larger than the diameter of each through-hole of the hollow wall formed on the outer periphery on both sides of the expansion / contraction And a rear flange and a cylindrical insertion guide portion having a diameter smaller than the diameter of the through-hole protruding longer than the hollow space between the inner wall material and the outer wall material from the inner periphery to the front of the front flange. And a synthetic resin pipe (1a) integrally formed with a thickness that can be flexibly deformed and restored, and an insertion portion that protrudes rearward from the inner periphery of the rear flange of the pipe and has a diameter smaller than the diameter of the through hole Tube material (1b) integrally formed with the above, or A holding flange having a length equal to the wall thickness of one of the inner wall member and the outer wall member and having an outer diameter larger than that of each of the through holes on the outer periphery of the rear end portion of the insertion portion. Is one of the pipe materials (1c) integrally formed.
The center spacer is formed of an insertion guide portion and an insertion portion of the tube material facing the inner peripheral surface of each through hole so that the centers of the front flange and the rear flange of the tube material overlap the center of each through hole of the hollow wall. It is formed or arranged on the outer peripheral surface.
The end pressing member includes a cylindrical portion provided with an engaging portion that can be fitted to the concave and convex portion inside the tube material at a tip portion, and each through hole of the hollow wall formed on the outer periphery of the rear end of the cylindrical portion. A through-duct member comprising a holding flange portion having a diameter larger than the diameter of the pipe member, wherein the pipe material, the center spacer, and the end holding member are combined.   5. The through duct member according to claim 4, wherein the center spacer of the through duct member is one or a plurality of annular members fixed to the outer peripheral surface of the insertion portion of the pipe material or the insertion guide portion. Through duct member.   The through-duct member according to claim 4, wherein the center spacer of the through-duct member is one or a plurality of annular bodies that can be attached to the outer peripheral surface of the insertion portion or insertion guide portion of the pipe material. A through duct member.   The through-duct member according to claim 5 or 6, wherein the annular body is made of a flexible material.   The through-duct member according to claim 4, wherein the center spacer of the through-duct member is a rod-like, plate-like, or a plurality of protrusions provided on the outer peripheral surface of the tube insertion portion or the insertion guide portion at substantially equal intervals in the circumferential direction. A through-duct member characterized by being a spherical protrusion.   5. The through duct member according to claim 4, wherein a plurality of center spacers of the through duct member project at a substantially equal interval in the circumferential direction on the outer periphery of the annular body that can be mounted on the outer peripheral surface of the tube insertion portion or the insertion guide portion. A penetrating duct member, characterized in that it is a rod-like, plate-like or spherical protrusion provided.   10. A through duct characterized in that the center spacer according to claim 8 or 9 is a rod-like or plate-like projection, wherein the projection is made of metal or resin, and the projection height can be adjusted by bending. Element.   10. The center spacer according to claim 8 or 9, wherein the projecting body is a rod-shaped projecting body, the base portion and the distal end portion of the projecting body are formed as separate shaft bodies and male and female screws that can be screwed into the separate shaft bodies are formed. A penetrating duct member characterized in that the protruding height can be adjusted by rotating the tip.   The through-duct member according to any one of claims 4 to 11, wherein an inner circumferential groove is formed inside the front flange and the rear flange of the pipe material, and the inner circumferential groove is flexible and can be filled. A through-duct member having a ring-shaped filling member fitted thereto.   The ring-shaped filling member fitted in the inner circumferential groove is fixed in the inner circumferential groove on the half circumference side, and is not fixed in the inner circumferential groove on the other half circumference side from the inner circumferential groove to the outside of the groove. The through-duct member according to claim 12, wherein the through-duct member is mounted so as to be drawable.   The penetration duct member according to any one of claims 4 to 12, wherein the end pressing member of the penetration duct member has an outer diameter that is substantially the same as the inner peripheral diameter of the insertion portion or insertion guide portion of the pipe material. A cylindrical portion that is longer than the wall thickness of the inner wall member and the outer wall member, a flange portion having an outer diameter larger than the diameter of the through hole formed in the rear end portion of the cylindrical portion, and a front end portion of the cylindrical portion. An engagement portion protruding so as to be able to fit into the irregularities inside the formed tube material, and a portion that reaches a portion deeper than the position where the engagement portion is located from the front end portion with an interval in the circumferential direction of the cylindrical portion. A through-duct member comprising a groove.   The end pressing member is characterized in that the cylindrical portion and the flange portion are separated so that the male screw portion formed on the outer periphery of the cylindrical portion and the female screw portion formed on the inner peripheral surface of the flange portion can be screwed together. The through duct member according to claim 14.   16. The through duct member according to claim 15, wherein the end pressing member is formed with an insertion groove into which a cut portion of the insertion guide portion of the tube material can be inserted at a front end portion of the female screw portion.

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