JP5330352B2 - Airtight duct structure with hollow walls - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an airtight duct structure of a hollow wall, easy in application, and capable of preventing waste of indoor thermal energy. <P>SOLUTION: Each of a pair of holding rings is configured so that a pit and projection 4, 5 engagedly corresponding to the inner peripheral surface of a large diameter ring 3 having a cylindrical part of the same external diameter as the diameter of through-holes A, B provided in an inner wall material D and an external wall material E and to the outer peripheral surface of a small diameter ring 2 having a cylindrical part fitted into the large diameter ring 3, respectively, are formed, and is provided with notches 7, 6 cutting in the peripheral direction. A communication pipe material 1 is configured so that an end flange 10 is formed at the base end of the pipe material longer than the wall thickness of a hollow wall and having an external diameter substantially equal to the inner diameter of the small diameter ring 2. By using the pair of holding rings and the communication pipe material 1, the holding rings are inserted into the through-holes A, B by wringing the notches 6, 7 of the holding rings to a smaller diameter, and then restoring the same so as to engage the pits and projections 5, 4 with each other and to mount the inner wall material D and the external wall material E to be in a state they are clamped by the flanges 8, 9. Then, the communication pipe material 1 is inserted from the through hole A until the end flange 10 is butted. <P>COPYRIGHT: (C)2012,JPO&amp;INPIT

Description

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

Many wooden houses in which an airtight sheet is stretched on the inner surface of a hollow wall composed of an outer wall material and an inner wall material and a heat insulating material is filled in the hollow space are constructed as high airtight wooden houses targeted for energy saving measures.
When installing an air conditioner in such a house, a drainage pipe, a refrigerant pipe, which connects an indoor unit and an outdoor unit by opening a through hole with a diameter of about 65 mm that normally penetrates the outer wall material and the inner wall material, The piping and wiring of electrical cords are performed. During the piping and wiring work, both sides of the through hole are closed with putty or the like in order to maintain the airtightness between the room and the room.
However, surrounding putty parts such as drainage pipes, electric cords, refrigerant pipes, etc. are cracked, peeled off, dropped off, etc. due to shrinkage or deterioration of the putty, and the airtightness is lost due to the generated gaps. As a result, the heat energy is greatly wasted in cooling and heating the room.
In addition, if a gap occurs in the putty applied to the outer wall material side, the value of the house may be lost due to insect damage such as termites that enter the hollow wall from the gap.

On the other hand, when mortar that is difficult to deteriorate is used instead of such a putty that tends to deteriorate, it takes time to solidify after filling at the time of construction, and it becomes hard when replacing a broken air conditioner with a new one. Problems such as the use of putty as described above, such as difficult removal of mortar and difficult construction, occur.
In order to solve such a problem, the following cited document 1 discloses that a helical tube made of metal or the like is inserted into a through hole without using a filler such as mortar, and an elastic sealing material is provided in the gap between the helical tube and the wall. A technique has been proposed in which the gap is closed by pressing the elastic seal material against the wall with a fixing ring in which the elastic seal material is screwed into the spiral tube.
However, in the technique of Patent Document 1, if the through-hole for the duct is provided by shifting the center positions of the outer wall material side and the inner wall material side while avoiding damage to the load bearing structure such as the studs and braces, aluminum It is almost impossible to bend a helical tube made of hard materials such as metal or engineer plastic, etc., and if it is bent forcibly, the helical tube will be deformed and the fixing ring can not be screwed and it can not be attached Become.
Furthermore, since this method uses a dedicated spiral tube and a fixing ring and an elastic sealing material that are screwed into the tube, it is difficult to increase the cost of materials and to perform the fixing ring screwing and the like. There is.

  In order to realize such a structure that can be attached to the through-holes of the outer wall material and the inner wall material even if the center positions of both through-holes do not match, the inventor previously described the bellows-like shape of the following Patent Document 2 and the length of the tube. A wall connecting pipe material that can be extended and contracted and a wall structure thereof are proposed, and a pinching ring disclosed in Patent Document 3 that can easily achieve airtightness by sandwiching a wall plate together with an airtight sheet is proposed.

JP 2000-179750 A Japanese Patent No. 3848968 JP 2006-225847 A

  In the above-mentioned Patent Document 2, a) Even if the center positions of the through-holes on the outer wall material side and the inner wall material side are shifted vertically and horizontally, the wall communication pipe material can be attached to the through-hole, and b) the space in the wall Effectively cut off from the outside space for a long period of time to maintain the airtightness of the hollow wall, making it possible to reduce the heat insulation function of the entire wall and prevent the entry of insects, etc. c) In addition, installation work of equipment such as air conditioners Construction such as replacement work can now be easily performed.

However, when trying to implement the technique of the above-mentioned Patent Document 2, the work of inserting the wall connecting pipe material into the through-holes of the outer wall material and the inner wall material by smashing it into a small shape and inserting it into the flange, There is a problem that it is troublesome to make the contact with both through holes.
Also, in actual sites, the wall thickness of the outer wall material or inner wall material varies in size, and the length and diameter of the through-holes opened in the wall material according to the thickness are actually not round but shaped. It is deformed or collapsed, and there are various sizes of holes, and depending on the state, sufficient sealing performance cannot be obtained, and as a result, gaps are generated and airtightness in the hollow wall is impaired. There was a fear.
On the other hand, the sandwiching ring disclosed in Patent Document 3 cannot maintain the airtightness of the entire hollow wall even though the outer wall material and the wall material of the inner wall material themselves can be achieved in both through holes. .

  Therefore, the present invention provides a through hole formed in the outer wall material and the inner wall material so as to improve the air tightness of the wall material itself in the through hole of the hollow wall and to obtain the air tightness of the room, the outdoor, and the hollow wall. An object of the present invention is to provide an airtight duct structure of a hollow wall that is easy to construct and can prevent waste of heat energy in a room by using a hollow wall duct member that can be easily mounted.

In order to solve the above-mentioned problem, the airtight duct structure of the hollow wall according to claim 1 of the present invention comprises a large-diameter ring and a small-diameter ring having elasticity to form a pair as an inner wall member and an outer wall member of the hollow wall. It is a hollow wall airtight duct structure using a duct member comprising a sandwiching ring attached to the opening edge of the provided through hole, and a communicating pipe member that is inserted through the sandwiching ring and penetrates the through hole.
The sandwiching ring of the duct member has a highly elastic cylindrical portion having a flange at the base end and having an outer diameter equal to or slightly smaller than the diameter of the through hole provided in the inner wall material and the outer wall material of the hollow wall. The inner surface of the diameter ring and the outer surface of the elastic small-diameter ring having a cylindrical portion with a flange formed at the base end are formed with irregularities that can be fitted in free positions, and the large-diameter ring and the small-diameter A notch for cutting the circumferential direction of the ring is provided.
Further, the communication pipe material is formed by forming an end flange having a diameter larger than the diameter of the through hole at the base end of the pipe material having an outer diameter longer than the wall thickness of the hollow wall and substantially equal to the inner diameter of the small diameter ring. .
And the airtight duct structure of the hollow wall using the duct member is inserted into the through hole of the inner wall material and / or the outer wall material of the hollow wall by shifting the notch of the sandwiching ring to a small diameter, and then the sandwiching Reconstructing the ring, fitting the irregularities formed on the inner peripheral surface of the large-diameter ring and the outer peripheral surface of the small-diameter ring, and mounting the inner wall material or the outer wall material in a sandwiched state with a flange, one of the through holes The communication pipe material is inserted from the side until the end flange of the communication pipe material comes into contact with the ring.

  The invention according to claim 2 is characterized in that, in the above-mentioned invention, the tip side portion of the communication pipe member protruding to the outside of the hollow wall is cut off.

  The invention according to claim 3 is the invention described in each of the above-mentioned inventions, in which the holding flange is provided at the proximal end of the cylindrical portion, the notch portion is provided at the distal end portion, and the claw portion that is opened at a diameter larger than the inner diameter of the communication tube material is provided at the distal end portion. Using the provided end pressing member, insert the end pressing member from the cut end of the communication tube until the pressing flange hits the cut portion of the communication tube, and bite the claw into the inner peripheral surface of the communication tube It is characterized by being fixed.

  The invention according to claim 4 is the above-mentioned invention, wherein the outer diameter of the large-diameter ring is smaller than the diameter of the through-hole, and the size fits between the inside of the through-hole and the outer periphery of the large-diameter ring. The annular filler is used, and the filler is disposed between the inside of the through hole and the outer periphery of the large-diameter ring.

  According to a fifth aspect of the present invention, in each of the above inventions, the hollow wall is a hollow wall in which an airtight sheet is stretched on the inner side of either the inner wall material or the outer wall material, and the through-hole is combined with the airtight sheet. The inner wall material or the outer wall material is penetrated.

The duct member for a hollow wall according to the present invention has a through-hole formed by shifting the notch including the flange portion to a small diameter when mounting the large-diameter ring and the small-diameter ring of the sandwiching ring to the through-holes of the inner wall member and the outer wall member. It can be easily inserted into the box.
And the inner wall material around the through hole is obtained by restoring the sandwiched ring inserted into the through hole and fitting the irregularities formed corresponding to the inner peripheral surface of the large diameter ring and the outer peripheral surface of the small diameter ring with screws. And it becomes possible to mount the outer wall material part in a state of being sandwiched from both sides by each flange.
At that time, since the sandwiching ring can be freely fitted at the concave and convex portions at any fitting position, even if there is a large difference in thickness between the inner wall material or the outer wall material, the wall material can be flanged from both sides in a short time. It is possible to securely fix by sandwiching without gap.
Further, even when the center positions of the through holes on the outer wall material side and the inner wall material side are shifted vertically and horizontally, the communication pipe material can be mounted in a state where the inner wall material and the outer wall material are bridged in a flexible manner. At that time, at least one wall surface of the sandwiching ring and the communication pipe member is in close contact with the small-diameter ring and the sandwiching ring, thereby blocking the room and the outdoors. In addition, when a sandwiching ring is used in the through holes of both the inner wall member and the outer wall member, the hollow space of the hollow wall can be shielded from the outside and the airtightness of the hollow space can be reliably maintained.

  In the invention according to claim 2, the wall surface is refreshed by cutting off the tip side portion of the communication pipe member protruding outward of one of the hollow walls, and the appearance of the wall surface is impaired at the protruding portion of the end portion. Disappear.

In the invention according to claim 3, when the end pressing member is inserted from the cut portion of the communication tube material cut out from the distal end side portion of the communication tube projecting to the outside of the hollow wall until the pressing flange hits the cut portion of the communication tube material. The claw portion bites into the inner peripheral surface of the communication tube material, and the end pressing member can be securely fixed to the communication tube material.
For this reason, it is possible to prevent the exposed portion of the cut surface of the distal end side portion of the communication pipe from being hidden by the flange surface of the end pressing member, thereby deteriorating the appearance of the wall surface. It becomes possible to improve the nature.

In the invention according to claim 4, when the outer diameter of the large-diameter ring is smaller than the diameter of the through-hole by filling the filler so as to sandwich the inside of the through-hole and the outer periphery of the large-diameter ring. For example, even if there is a large gap between the through hole and the sandwiching ring, the gap is filled and centered so that the center of the sandwiching ring overlaps the center of the through hole. It can be securely attached without detachment.
Then, the pinching ring that is cracked by the cut is pushed outward from the outer periphery of the large-diameter ring toward the center, and the airtightness between the inner peripheral surface of the small-diameter ring of the pinching ring and the outer peripheral surface of the communication pipe member And the airtightness of the hollow wall surface can be maintained.

  In the invention of claim 5, an airtight sheet is stretched on the inner surface of at least one of the inner wall material and the outer wall material, thereby preventing the passage of air and water vapor in the wall by the airtight sheet, and the airtightness of the hollow space It is possible to improve the performance, to realize a significant saving in heating and cooling costs for maintaining the room temperature constant, and to suppress the consumption of heat energy.

As described above, according to the present invention, even if the thickness of the outer wall material and the inner wall material of the hollow wall and the shape of the through hole are variously different, the sandwiching ring freely corresponds to the through hole opening of the outer wall material and the inner wall material. The confidentiality of the edge can be ensured, and by connecting the communication tube material to the sandwiching ring, the opening edge of the through hole can be surely blocked from the outside. As a result, it is possible to ensure the airtightness of the room and the hollow space.
As a result, it is possible to prevent the intrusion of outside air and moisture from the through hole into the hollow space of the hollow wall, prevent the occurrence of condensation on the wall surface, and greatly reduce the heating and cooling costs for maintaining the indoor temperature comfortably. Is possible.
In addition, the mounting work can be performed from one side of the hollow wall, and the communication pipe material can be inserted and mounted at a time, so that the construction time can be greatly shortened.

(A) of the pinching ring used in the present invention is a perspective view showing a large-diameter ring and (b) is a small-diameter ring. It is a perspective view which shows the pinching ring of the state which the large diameter ring used for this invention and the small diameter ring couple | bonded. It is a perspective view which shows the state which pushed down the large diameter ring used for this invention, and narrowed down the diameter. It is a perspective view which shows the filler used for this invention. It is each perspective view which shows the aspect whose front-end | tip part of the communicating pipe | tube material used for this invention shows a cylindrical shape, (b) is a taper pipe. (A) which shows the edge pressing member used for this invention is a vertical side view, (b) is a perspective view. (A) of a pinching ring used in the present invention is a side view, and (b) is a longitudinal side view. It is a perspective view which shows the state which fitted the pinching ring and communication pipe | tube material used for this invention. The construction process of the duct member of the airtight duct structure is shown, (A) is the state where the small diameter ring is to be installed, (B) is the state before fitting the large diameter ring and the small diameter ring, (C) is the sandwiched ring It is each vertical side view which shows the state which has mounted | wore. Each vertical side showing the construction process of the duct member of the airtight duct structure, where (a) indicates that the connecting pipe has been attached to the pinched ring that has been installed, and (b) indicates that the connecting pipe has been completely attached to the pinching ring FIG. Each vertical section shows the construction process of the duct member in another form of airtight duct structure, where (a) shows the state where the connecting pipe is attached to the sandwiching ring, and (b) shows the state where the connecting pipe is completely attached to the sandwiching ring It is a side view. It is a vertical side view which shows the airtight duct structure of this invention. 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.

The form for implementing this invention is demonstrated below.
As shown in FIG. 9 (a), the present invention is provided in order to penetrate piping and wiring of equipment such as an air conditioner through a hollow wall composed of an inner wall material D and an outer wall material E having a hollow space C therein. This is a duct member used for maintaining indoor airtightness and airtightness in the hollow space C with respect to the through holes A and B, and a hollow wall airtight duct structure using the duct member.
This duct is provided with pipes such as refrigerant pipes and water distribution pipes that connect the indoor air conditioner and the outdoor unit later, and electrical cords in the through holes A and B. Finally, the refrigerant pipe is filled with a filler such as putty. Construction of air conditioners and other equipment is completed by filling gaps around pipes such as pipes and water pipes and electrical cords.
The present invention is a technique applied to the through holes A and B before the installation work of such an air conditioner or the like.

As shown in FIG. 9, the hollow wall to be used in the present invention is stretched with an inner wall material D such as a gypsum board on the indoor side, and a hollow space C is formed at a constant interval by a stud or the like. A hollow wall having a structure in which an outer wall material E such as a cement-based outer wall material is stretched.
In many cases, the outer wall material E has a structure in which a plurality of various plate materials are overlapped.
The two through holes A and B provided in the inner wall material D and the outer wall material E as described above are such that, as shown in FIG. In many cases, however, there are various differences depending on the actual construction site, such as when the holes are holes having different diameters or when the center position is different vertically or horizontally as shown in FIG.
And although the airtight sheet | seat F is normally stretched inside the outer wall material E, it may be stretched on the inner side or both surfaces of the inner wall material D. Such an airtight sheet F blocks the movement of air and water vapor in the wall, prevents the heat insulating material such as glass wool filled in the hollow space C from deteriorating due to condensed water, and prevents a temperature difference from the room. It prevents air containing a certain amount of moisture from entering a room or a hollow space.

The airtight duct structure of the present invention in the hollow wall as described above will be described in detail below with reference to the drawings.
In the present invention, as shown in FIG. 12, a large-diameter ring 3 and a small-diameter ring 2 having elasticity are paired, and the opening edges of the through holes A and B provided in the inner wall material D and the outer wall material E of the hollow wall A hollow wall airtight duct structure constructed by using a duct member combined with a sandwiching ring to be attached to and a communication pipe member 1 inserted through the sandwiching ring and penetrating into the through holes A and B.
The airtight duct structure formed by mounting the sandwiching ring and the communication pipe 1 in the through holes A and B is installed with an air conditioner or the like, and then the through holes A and B are closed with putty or the like. The outdoor and indoor areas will be shut off.

First, the duct member used for the through-hole of the hollow wall of the present invention will be described.
The sandwiching ring includes a large-diameter ring 3 in which a flange 9 having a diameter larger than the diameters of the through holes A and B is formed at the base end of the cylindrical portion shown in FIG. A pair of a small-diameter ring 2 in which a flange 8 having a diameter larger than the diameters of the through holes A and B is formed at the base end of the part is combined and used as a pair as shown in FIG.
The large diameter ring 3 and the small diameter ring 2 are provided with cuts 7 and 6 for cutting the respective circumferential directions.

  If the sizes of the flanges 9 and 8 of the large-diameter ring 3 and the small-diameter ring 2 are both excessively large, it may not be possible to pass through the through holes A and B even if the notches 6 and 7 are narrowed. In order to be able to pass through the through holes A and B, the diameter should be as small as possible. At least, the diameter should be such that it cannot be easily removed from the through holes A and B.

Further, as shown in FIG. 3, the materials of the large-diameter ring 3 and the small-diameter ring 2 are formed by shifting the notches 7 and 6 so as to be fitted into the through-holes. It is necessary to have elasticity that can be deformed to such an extent that it can be put in the inside of the container. Therefore, it is preferable to use a synthetic resin such as polyethylene having elasticity.
The size of the cylindrical portion of the large-diameter ring 3 is equal to the diameters of the through holes A and B provided in the inner wall material D and the outer wall material E of the hollow wall in order to be attached to the opening edges of the through holes A and B. Or a slightly smaller outer diameter.

Further, as shown in the side view of (a) in FIG. 7 and the cutaway side view of (b), on the inner peripheral surface of the cylindrical portion of the large-diameter ring 3 and the outer peripheral surface of the cylindrical portion of the small-diameter ring 2 Corresponding irregularities 5 and 4 are provided. When the concaves and convexes 5 and 4 are fitted into the large-diameter ring 3, the concaves and convexes 5 and 4 are formed so as to be able to be fitted in free positions as shown in FIG.
For example, if the unevennesses 5 and 4 are screw-like unevennesses 5 and 4, it can be reliably fitted at any position of the fitting width by rotation.
In addition, even if it is not a spiral unevenness | corrugation, if it is a circumferential groove | channel of a fine pitch, since an unevenness | corrugation fitting is attained in a substantially free position, it can be used.

Moreover, the said communication pipe material 1 is inserted so that an outer peripheral surface may become a substantially contact | adherence state, as shown in FIG. 8, in the pinching ring with which the said through-holes A and B were mounted | worn. As shown in (a), the flanges 9 and 8 of the large-diameter ring 3 and the small-diameter ring 2 are provided at the proximal ends of the pipes having an outer diameter longer than the wall thickness of the hollow wall and substantially equal to the inner diameter of the small-diameter ring 2. An end flange 10 having a diameter larger than the diameter is formed.
As shown in FIG. 9 (c), the flange 10 does not advance further inward if it hits the flanges 8 and 9 of the sandwiching ring, and there is no problem even if it is small. However, if the diameter is larger than the flanges 8 and 9 of the sandwiching ring, the flanges 8 and 9 of the sandwiching ring cannot be seen from the outside, so that the appearance is improved.

Further, the pipe part of the communication pipe 1 is formed into a flexible or hard straight pipe (shown in FIGS. 5A and 5B) or a flexible bellows-like pipe 1d (shown in FIG. 11). It is also possible to form it.
Furthermore, a taper-tapered insertion guide portion 1c (shown in FIG. 5B) can be extended at the distal end portion of the communication tube material 1 at the cylindrical distal end. When 1c is present, the tip 1a enters directly into the through-hole in the back, so that the connecting work of the communicating tube 1 is facilitated.
The material of the communication tube 1 is made of a synthetic resin such as polyethylene, and a thick hard tube or a thin soft tube can be used.

The duct member used in the present invention includes an annular filler 16 shown in FIG. 4 in addition to the sandwiching ring and the communication tube 1, and an end pressing member 11 shown in FIGS. 6 (a) and 6 (b). Or the like can be used according to the state of attachment with the through holes A and B, the sandwiching ring, and the communication tube 1.
As shown in FIG. 6, the end pressing member 11 includes a pressing flange 13 at the proximal end of the cylindrical portion 11, has a notch 15 at the distal end, and opens at a larger diameter than the inner diameter of the communication tube 1 at the distal end. The thing of the aspect which has the nail | claw part 14 can be used.
The filler 16 is made of a foamed resin having elasticity and has an annular shape having an inner diameter equal to the outer diameter of the large-diameter ring 3, and the outer diameter of the large-diameter ring is larger than the diameters of the through holes A and B. 14 when the through holes A and B are slightly irregular in diameter, as shown in FIG. 14, the opening surfaces of the through holes A and B and the large diameter The gap formed between the outer peripheral surface of the ring 3 can be filled.

Next, an airtight duct structure in which the above duct member is used for the through holes A and B of the hollow wall will be described below.
As shown in FIG. 9 (A), the base holes are formed in the through holes A and B provided in the inner wall material D and the outer wall material E of the hollow wall, as shown in FIG. 9 (B). Using a sandwiching ring comprising a large-diameter ring 3 and a small-diameter ring 2 having flanges 8 and 9 and having incisions 6 and 7, the incisions 7 and 6 are shifted so as to crush both rings 3 and 2, and the small-diameter After that, the sandwiching ring was restored, and as shown in FIG. 9 (C), the inner wall material D and the outer wall material E were sandwiched from both sides by the flanges 9 and 8, respectively. The projections 5 and 4 are fitted and fixed in a state.

Then, as shown in FIG. 10 (a), from the through hole A on one side of the through holes A and B, as shown in FIG. While sliding on the peripheral surface, as shown in FIG. 10C, the end flange 10 of the communication tube 1 is inserted until it comes into contact with the flange 8 of the small-diameter ring 2.
Then, as shown in FIG. 12, the tip 1a side portion and the insertion guide portion 1c of the communicating tube 1 protruding to the outside of the sandwiching ring are excised.
As shown in FIG. 12, the airtight duct structure of the hollow wall configured in this way is configured to seal the hollow space C by attaching the sandwiching rings to the through holes A and B of the inner wall material D or the outer wall material E, respectively. It becomes possible to obtain sex.

As shown in FIG. 11 (a), when the middle of the pipe of the communication tube 1 is formed in an accordion shape, as shown in FIG. Even if the centers of the two through holes A and B of the outer wall material E are slightly deviated from each other in the vertical and horizontal directions, it is possible to bend the middle of the communication tube material 1 and securely attach the through holes A and B.
Moreover, if the middle of the tube material of the communication tube material 1 is a thin and flexible straight tube, this portion is likely to be bent and deformed, so that the centers of both through-holes A and B are shifted as in the case of the bellows shape. In addition, it is possible to bend the middle of the communication tube 1 and attach it to both the through holes A and B.
Then, the small diameter ring 2 and the communicating tube 1 are connected in close contact with each other in a state where the communicating tube 1 is inserted into the sandwiching ring and bridged to the through holes A and B of the inner wall member D and the outer wall member E. The airtightness of the space C can be reliably maintained.

In the present invention, after cutting the tip 1a side portion of the communication tube 1, it is possible to cover the cut portion with the end pressing member 11 shown in FIG.
As shown in FIG. 13, the end pressing member 11 is inserted from the cut end portion of the communication tube 1 until the presser flange 13 hits the cut portion of the communication tube 1.
The end pressing member 11 inserted in this way bites so that the claw portion 14 is in contact with the inner peripheral surface 1b of the communication tube 1 in a pressed state and does not easily come off due to frictional resistance at the tip of the claw portion 14. Fixed.
When this end holding member 11 is used, the excised portion of the communicating pipe material 1 that has been exposed is hidden by the holding flange 13, so that the appearance of the wall surface can be improved, and at the same time, the excised portion is closed to improve airtightness. It becomes possible to raise.

  And after the completion of the airtight duct structure of the hollow wall of the present invention, pipes such as refrigerant pipes and water distribution pipes connecting the indoor unit and the outdoor unit into the communication pipe 1 when installing the air conditioner or the like. In addition, the interior side and the exterior side of the communication tube 1 are filled with a putty or the like to close the opening of the through-hole, and the interior side and the exterior side are surely blocked. Thus, it is possible to prevent outside air having a temperature difference from the room from entering the room.

  Thus, in the airtight duct structure of the hollow wall of the present invention after closing the opening of the through hole, at least one wall surface of the inner wall material D and the outer wall material E is connected to the through holes A and B by a sandwiching ring. Sealability is obtained. Further, since the inner wall material D and the outer wall material E are bridged by the communication pipe material 1 inserted into the sandwiching ring and the hollow space C and the outside of the wall are blocked, the airtightness of the hollow space C can be reliably maintained. It becomes.

  In the present invention, the airtight sheet F is different in whether the through hole for mounting the sandwiching ring is the through hole A of the inner wall material D or the through hole B of the outer wall material E or both. The sandwiching ring is used in accordance with each case of the outer wall material E, the inner wall material D, or both the outer wall material E and the inner wall material D.

  In each of the above drawings, the airtight sheet F is stretched inside the outer wall material E. When the airtight sheet F is stretched inside the outer wall material E in this way, as shown in FIG. 12, a sandwiching ring is attached to both the through holes A and B of the inner wall material D and the outer wall material E. When the communication pipe 1 is used, the hollow space C is surely cut off from the outside air. As a result, the heat insulating material such as glass wool filled in the hollow space C can be prevented from deteriorating in function with condensed water, the heat insulating performance of the wall surface can be further improved, and the heating and cooling costs can be greatly saved. .

  Further, when a sandwiching ring is attached only to the through-hole B of the outer wall material E and the communication pipe material 1 is used for this, outdoor air cannot enter the hollow space C, and the entire inside of the wall is exposed from the outside air. It is reliably shut off.

Further, when the airtight sheet F is stretched inside the inner wall material D, when the sandwiching ring is attached only to the through hole B of the inner wall material D, if the communication pipe material 1 is used for this, the hollow space C is Although the outside air may intrude, the room is blocked from the outside air, so that the whole wall is more than the case where the sandwiching ring is attached only to the through hole B of the outer wall material E in that the outside air may enter the hollow space C. It is conceivable that the heat insulation effect in the case decreases.
In addition, when the airtight sheet F is stretched only inside the inner wall material D and the sandwiching ring is attached only to the through hole B of the outer wall material E, or the airtight sheet F is stretched only inside the outer wall material E, and When the sandwiching ring is attached only to the through hole B of the inner wall material D, the wall material covered with the airtight sheet F is not blocked by the through hole, so that the moisture blocking performance may not be sufficiently obtained. There is.
Therefore, it is preferable to mount the sandwiching ring at least in the through hole of the wall material with the airtight sheet F stretched.

  After the openings of the through holes A and B are closed as described above, a sandwiching ring is attached to the through holes A and B of both the inner wall material D and the outer wall material E to communicate with each other as shown in FIG. By penetrating the tube material 1, the hollow space C can be sealed and both the outdoor side and the indoor side can be reliably shielded, so that it is possible to obtain the most excellent performance in both heat insulation and moisture resistance.

  The present invention is an airtight duct structure of a hollow wall using a duct member attached to a through-hole provided in an inner wall material and an outer wall material of the hollow wall. When a through-hole is provided in a portion having a double structure with a gap on the ceiling surface or the like, it can be used for the purpose of maintaining the airtightness of the inside.

DESCRIPTION OF SYMBOLS 1 Communication pipe material 1a The front-end | tip part of a communication pipe material 1b Inner peripheral surface of 1c communication pipe material 1c Insertion guide part 1d Bellows shape part 2 Small diameter ring 3 Large diameter ring 4 Concavity and convexity of small diameter ring 5 Concavity and convexity of small diameter ring 7 Large diameter cut Diameter ring notch 8 Small diameter ring flange 9 Large diameter ring flange 10 End flange of communication tube 11 End pressing member 12 End holding member annular base 13 End pressing member holding flange 14 End pressing member claw Part 15 Notch of end pressing member 16 Filler A Through hole B Through hole C Hollow space D Inner wall material E Outer wall material F Airtight sheet

Claims (5)

A pair of elastic large-diameter ring and small-diameter ring forming a pair, a sandwiching ring that is attached to the opening edge of the through-hole provided in the inner wall member and the outer wall member of the hollow wall, and inserted through the sandwiching ring into the through-hole An airtight duct structure of a hollow wall using a duct member comprising a communicating pipe material that penetrates,
The sandwiching ring is a resilient large-diameter ring having a cylindrical portion with a flange formed at the base end and having an outer diameter that is equal to or slightly smaller than the diameter of the through hole provided in the inner wall material and the outer wall material of the hollow wall. The inner peripheral surface and the outer peripheral surface of the elastic small-diameter ring having a cylindrical portion with a flange formed at the proximal end are respectively formed with irregularities that can be fitted in free positions, and the circumferences of the large-diameter ring and the small-diameter ring are Provided with a cut to cut the direction,
The communication pipe material is formed by forming an end flange having a diameter larger than the diameter of the through hole at the proximal end of the pipe material having an outer diameter longer than the wall thickness of the hollow wall and substantially equal to the inner diameter of the small diameter ring,
The inner wall material of the hollow wall and / or the outer wall material are inserted into the through-holes by shifting the notch of the sandwiching ring to a small diameter, and then restoring the sandwiching ring to restore the inner peripheral surface of the large-diameter ring and the small-diameter ring. The inner wall material or the outer wall material is sandwiched between flanges, and the end flange of the communication tube material is inserted into the ring by sandwiching the communication tube material from one side of the through hole. Airtight duct structure with a hollow wall that penetrates until it hits. In the airtight duct structure of the hollow wall according to claim 1,
An airtight duct structure of a hollow wall, characterized in that a front end side portion of a communication pipe member protruding to the outside of the hollow wall is cut off. In the airtight duct structure of the hollow wall according to claim 2,
Using a presser flange at the proximal end of the cylindrical part, having a notch part at the distal end part, and having a claw part opened at a larger diameter than the inner diameter of the communication tube material at the distal end part,
The end presser member is inserted from the cut end portion of the communication tube until the presser flange hits the cut portion of the communication tube, and the claw is cut into the inner peripheral surface of the communication tube and fixed. Airtight duct structure with hollow walls. In the airtight duct structure of the hollow wall according to any one of claims 1 to 3,
When the outer diameter of the large-diameter ring is smaller than the diameter of the through-hole, using an annular filler of a size that fits between the inside of the through-hole and the outer peripheral surface of the large-diameter ring,
An airtight duct structure with a hollow wall, wherein the filler is disposed between the inside of the through hole and the outer periphery of the large-diameter ring. In the airtight duct structure of the hollow wall according to any one of claims 1 to 4,
The hollow wall is a hollow wall in which an airtight sheet is stretched inside either the inner wall material or the outer wall material, and the through hole penetrates the inner wall material or the outer wall material together with the airtight sheet. Airtight duct structure with hollow walls.

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