JP5409445B2 - Airtight duct structure of hollow wall and through duct member used for the structure - Google Patents

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, a refrigerant pipe, and an electric pipe that connect the indoor unit and the outdoor unit to the through hole. The piping and wiring of the cord etc. are done. During the piping and wiring work, both sides of the through hole are closed with putty or the like to maintain the airtightness between the room and the room.
However, it is easy to create gaps around drain pipes, electrical cords, refrigerant pipes, etc. that overlap in parallel in the through-holes, and cracks, delamination, and dropouts occur in the putty due to shrinkage and deterioration due to changes over time due to ultraviolet rays. However, there may be a large gap.
If there is a gap in the through-hole of the outer wall material or the through-hole of the inner wall material, the airtightness inside the hollow wall will be impaired even if the space between the indoor and the outdoor is blocked by either one of the wall surfaces. As a whole, the heat insulating property is lowered, and a large amount of heat energy is wasted to cool and heat the room.
In addition, if a gap occurs in the through hole on the outer wall material side, the value of the house may be damaged by insect damage such as termites that enter the hollow wall from 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 is solidified when replacing an air conditioner or the like. There are different difficulties from the above putty.
In order to solve such a problem, the following cited document 1 discloses that without using mortar, a spiral tube is inserted into a through-hole and an elastic seal material is disposed in a gap between the spiral 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 helical tube.
However, in the technique of Patent Document 1, 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 so as to avoid damaging the load bearing structure such as the studs and braces. For example, a spiral tube made of a hard material such as a metal such as aluminum or an 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 becomes impossible to attach because it becomes impossible to match.
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 following patent document as a method that can be attached to a through-hole even when the duct is provided by shifting the center positions of both through-holes of the outer wall material and the inner wall material. We proposed a wall-connecting pipe with a bellows-like shape that can be extended and contracted and its wall structure.

JP 2000-179750 A Japanese Patent No. 3848968

In the above-mentioned patent document 2, even if the center position of the through hole on the outer wall material side and the inner wall material side is shifted up and down, left and right, the wall communication pipe material can be mounted flexibly so that the space in the wall is external It is possible to effectively block the space from the space for a long period of time and maintain the airtightness in the hollow wall to prevent the heat insulation function of the entire wall from deteriorating 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 trying to implement the technique of the above Patent Document 2, the wall thickness of the outer wall material or the inner wall material varies in size, and the state of the length and diameter of the through hole opened in the wall material in accordance with the thickness is as follows: Actually, there are many cases where the shape is deformed or collapsed instead of a perfect circle, and there are various sizes of holes, and either the outer wall material side or the inner wall material side is a through hole with a large diameter. In some cases, the wall communication pipe material cannot be fixed to the larger through hole, and the construction using the wall communication pipe material may be abandoned. When the center is shifted, there is a problem that a gap is generated in a part of the through hole and the airtightness in the hollow wall is impaired.
Moreover, when the wall of the outer wall member or the inner wall member is larger than the set interval between the outer flange and the inner flange, there is a problem that the outer flange side fixed with the wall member interposed therebetween cannot be fitted to the wall member.

  Therefore, the present invention can be easily attached even if the center positions of the through hole of the outer wall material and the through hole of the inner wall material are shifted, and can be easily fixed even if the outer wall material or the inner wall material has different thicknesses. In addition, the hollow space between the outer wall material and the inner wall material can be reliably cut off from the external space regardless of the deformation of the through hole and the size of the diameter, and the airtightness in the hollow wall can be maintained for a long period of time. It is an object of the present invention to provide an airtight duct structure that can be used and a through duct member used for the duct structure of the hollow wall.

In order to solve the above-mentioned problem, the airtight duct structure of the hollow wall according to claim 1 of the present invention has a through-hole formed of a tube material and an end pressing member in a through hole provided in the inner wall material and the outer wall material of the hollow wall. Proposing a hollow wall airtight duct structure equipped with a duct member, and the tube material used in the airtight duct structure has a length longer than the hollow interval between the inner wall material and the outer wall material, and when the tube material is shrunk, A spiral or bellows tubular stretchable portion that undulates in parallel with a length that fits within the interval, and 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 stretchable portion; The 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 of the tip flange to the front is flexibly deformed by the force of a finger. Synthetic tree integrally formed to a thickness that can be restored A tubular material (1a), a tubular material (1b) that protrudes backward from the inner periphery of the rear flange of the tubular material and has an insertion portion having a diameter smaller than the diameter of the through hole, or the length of the insertion portion The length of the inner wall member or the outer wall member is equal to the wall thickness on either side, and a pressing flange having an outer diameter larger than each through hole is integrally formed on the outer periphery of the rear end portion of the insertion portion. One of the pipe materials (1c).
The end pressing member includes an engaging portion having a diameter larger than the inner diameter of the bellows tubular portion that can be fitted to the bellows tubular concave and convex portion inside the tube material, and the thickness of the inner wall material or the outer wall material. A cylindrical portion formed longer than the sum of the thicknesses of the front flange and the rear flange, and a holding flange portion having a diameter larger than the diameter of each through hole of the hollow wall formed on the outer periphery of the rear end of the cylindrical portion; Consists of.

The through-duct member is attached to the through-hole by inserting the through-holes of the inner wall member and the outer wall member into the through-holes of the inner wall member and the outer wall member while deforming the pipe member with fingers. To close the gap around the inside of both through holes, and to cut out the protruding portion from the through hole of the insertion guide part to the outside, and from the outside of the rear flange and / or the insertion guide part The engaging portion is inserted by the restoring force of the bellows tubular portion until the bellows tubular portion that has passed through the end pressing member while expanding the inside of the bellows tubular portion is in a contracted state, and the restoring portion of the bellows tubular portion is used to connect the engaging portion to the bellows tubular shape. This is performed by engaging with the concavo-convex portion and fixing it to the tube material and closing the periphery of the opening from outside the through hole.
The resulting hollow wall airtight duct structure is characterized in that the airtightness in the hollow wall can be maintained.

According to a second aspect of the present invention, in the airtight duct structure of the hollow wall according to the first aspect, the outer periphery is brought into contact with the through hole of the hollow wall without a gap so that each through hole of the hollow wall is An outer center of the rear flange of the tube material or an outer periphery of the insertion portion facing the inner peripheral surface of each through-hole so that the position can be constrained so that the center of the front flange and the rear flange of the tube material overlaps the center. It is formed or arranged on the outer peripheral surface of the surface or the insertion guide portion.

  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, an airtight sheet is stretched on at least one inner surface of the outer wall material and the inner wall material.

  According to a fourth aspect of the present invention, in the airtight duct structure of the hollow wall according to any one of the first to third aspects, the wires arranged through the through duct member attached to the through hole, and A filling material is filled in a gap between the indoor side and the outdoor side opening formed between the pipes, and both sides of the through hole are closed.

Invention of Claim 5 is a penetration duct member used for the airtight duct structure of the hollow wall in any one of said Claim 1 to 4, Comprising: A pipe material is the said inner wall material and outer wall material in length Each of the through-holes of the hollow wall formed on the outer circumferences on both sides of the expansion / contraction portion. A front flange and a rear flange each having a diameter larger than the diameter, and a cylindrical shape 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. A synthetic resin pipe (1a) integrally formed to a thickness that can be flexibly deformed and restored by the force of a finger with the insertion guide portion, protrudes rearward from the inner periphery of the rear flange of the pipe, and Tube with an integral insertion part with a diameter smaller than the diameter The length of the material (1b) or the insertion portion is equal to the wall thickness on either side of the inner wall material or the outer wall material, and the outer diameter is set 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 that of the through hole,
The end pressing member includes an engaging portion having a diameter larger than the inner diameter of the bellows tubular portion that can be fitted into the bellows tubular concave and convex portion inside the tube material, and the thickness and the tip of the inner wall material or the outer wall material. A cylindrical portion formed longer than the total length of the flange or the rear flange, and a holding flange portion having a diameter larger than the diameter of each through hole of the hollow wall formed on the outer periphery of the rear end of the cylindrical portion. The tube material and the end pressing member are combined.

  The invention according to claim 6 is the penetrating duct member according to claim 5, wherein an inner circumferential groove is formed inside the front flange and the rear flange of the pipe material, and the inner circumferential groove can be filled. A flexible ring-shaped filling member having elasticity is fitted.

  According to a seventh aspect of the present invention, 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 fixed in the inner circumferential groove on the other half circumference side. Without being attached so that it can be pulled out of the inner circumferential groove.

  The invention according to claim 8 is the penetrating duct member according to any one of claims 5 to 7, wherein the engaging portion is located from the front end portion at an interval in the circumferential direction of the cylindrical portion. Also, a split groove reaching a deep part is formed.

According to a ninth aspect of the present invention, there is provided a through duct member according to any one of the fifth to eighth aspects, wherein the perimeter of the through hole of the hollow wall is in contact with the through hole of the hollow wall without any gap. An annular center spacer is formed or arranged on the outer peripheral surface of the insertion guide part and the insertion part of the pipe member facing the inner peripheral surface of each through hole so that the centers of the front flange and the rear flange of the pipe material overlap the center of the hole. It was set up.

  A tenth aspect of the present invention is the penetrating duct member according to the ninth aspect, wherein the center spacer of the penetrating duct member is fixed to the outer peripheral surface of the insertion portion of the pipe material or the insertion guide portion. Or it is a some annular body, It is characterized by the above-mentioned.

  Invention of Claim 11 is the penetration duct member of the said Claim 9, 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 airtight duct structure of the hollow wall according to the present invention has a stretchable portion of the pipe member of the penetrating duct member, which is a bellows tube that undulates spirally or in parallel, so that the stretchability and the restoring force of the stretchable portion are maintained. When installed in the hole, the rear flange and the front flange can continue to press the inner surfaces of the outer wall material and the inner wall material to maintain airtightness. , Flexible pipe material can be deformed so that it can be crushed with fingers, and the tip flange and rear flange of the pipe material can be easily inserted into the hollow space from the unidirectional through hole of the inner wall material or outer wall material It becomes. For this reason, it becomes possible to easily attach to each through-hole whose center is greatly displaced from side to side and up and down.
Also, 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 through the through hole in the front, and it can be easily from one direction of the wall It becomes possible to install.
At that time, since the engaging portion at the tip of the cylindrical portion can be fitted into the concavo-convex portion at any position of the bellows tube inside the tube material, the end pressing member has any thickness of the inner wall material or the outer wall material. Even if it exists, it becomes possible to pinch | interpose a wall material with a front flange or a rear flange without gap, and to fix it reliably.
And even if there is a large difference in the thickness of the outer wall material or the inner wall material, the periphery of the opening of the through hole is reliably shielded from the outside by the end pressing members from both sides of the through hole. The end pressing member, the front flange, and the rear flange can reliably maintain the airtightness of the hollow space.
In addition, since the duct installation work can be inserted from one of the hollow walls and the through duct member can be easily attached to the through hole, the working time can be greatly reduced.

  In the invention according to claim 2, 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. Since they are brought together, the front flange and the rear flange can reliably shield the periphery of the through hole from the inside of the wall.

  In the invention described in claim 3, the airtight sheet prevents the passage of air and water vapor in the wall, thereby further improving the airtightness of the hollow space.

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

  In the invention according to claim 5, there are three types of pipe materials used for the through-duct member, and the invention of the airtight duct structure of each hollow wall can be easily implemented by using these in combination with the end pressing member. It becomes possible.

  In the invention according to claim 6, by filling the inner circumferential groove of the rear flange and the front flange of the pipe material with a ring-shaped filling member having elasticity, the front flange and the rear flange of the pipe material are formed on the inner surface of the hollow wall. 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 according to claim 7, 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. By crushing the small front flange and the rear flange, it can be easily inserted into the through-hole, and the ring shape after insertion. 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 8, a split groove is formed in the cylindrical portion of the end pressing member so as to reach a portion deeper than the position where the engaging portion is located from the front end portion at a circumferential interval. When the groove is inserted into the tube material, the engaging portion hits the convex portion of the tube material so that the engaging portion can be elastically deformed inward and smoothly inserted, and the groove contacts the concave portion and opens to the outside. It is possible to strongly engage the part.

  In the invention according to claim 9, even if there is a large gap, the through duct member is provided with a center spacer so that the centers of the front flange and the rear flange of the pipe material overlap each other at the center of each through hole. Since the periphery of the opening of the through hole is shielded from the outside of the wall by the end pressing member, there is no gap between the front flange and the rear flange at the periphery of the through hole, and the airtightness of the hollow space is reduced. It can be securely held.

  In the invention of claim 10, the centers of the front flange and the rear flange of the tubular material are located at the center of each through hole of the hollow wall by various center spacers of the through duct member interposed between the through hole and the tubular material. Superimposed. At that time, since the center spacer is fixed to the pipe material, the mounting becomes easy.

  Of these, in the invention according to claim 11, the center spacer 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 exchanged for an optimum size. .

As described above, according to the present invention, even if the thicknesses of the outer wall material and the inner wall material are variously different, the pipe material can be fixed to the through hole in accordance with the size freely. It becomes possible to reliably block the hollow space of the material from the external space.
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. (A) of the pipe material of the penetration duct member of another form is a perspective view, (b) is a vertical 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, It is each vertical side view which shows the state which attached | subjected the penetration duct member 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. The mounting process of the penetration duct member of another form of the airtight duct structure is shown, (A) is a state in which the penetration duct member is inserted into the hollow wall, (B) is fitted with the pipe material of the penetration duct member to the hollow wall, It is each vertical side view which shows the state before mounting | wearing with an edge part pressing member, and the state which (c) completed mounting | wearing with the penetration duct member to the hollow wall. 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 which used the edge part pressing member only for one side of the pipe material. 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. 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 after the air-conditioner installation which plugged up the both sides of the penetration duct member with a filler.

As shown in FIG. 16, the present invention provides a hollow wall for piping or wiring through holes 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 which are spaced apart from each other. It is a duct structure for maintaining the inside airtightness, and is a through duct member used for the duct structure.
FIG. 16 shows that a pipe 18 such as a refrigerant pipe or a water pipe connecting the indoor air conditioner 20 and the outdoor unit 21 outside, and an electric cord 19 penetrate 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 outer side with a space between the pillars. In many cases, the outer wall material B is further laminated with a plurality of various plate materials.

An airtight sheet C is stretched inside the outer wall material B.
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 having different diameters or when the center position is different vertically as shown in FIG.

Tubular pipe ducts are attached to the through holes a and b 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 relates to a duct structure capable of maintaining the airtightness of the various hollow walls described above, and this structure will be described in detail below together with a through duct member to be used.

As shown in FIG. 9, the airtight duct structure of the hollow wall according to the present invention includes a tube material 1 in the through-holes a and b in which 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 equipped with a through duct member combined with an end pressing member 8.
The through-duct member used in connection with the airtight duct structure of such a hollow wall is attached to the through-holes a and b provided in the hollow wall, as shown in FIG. Each part of the member is a member closely related to the structure of the wall and its size.

First, the tube material 1 will be described.
Among the through duct members, the tube material 1 is a synthetic resin tube material 1 made of a synthetic resin material such as polyethylene or synthetic rubber, which is integrally formed. The following tube material (1a), tube material (1b), and tube material There are three forms (1c).

  As shown in FIG. 1, the pipe member (1a) has a length longer than the space between the inner wall material A and the outer wall material B. When the tube material (1a) is contracted, the tube material (1a) undulates in a spiral or a parallel length. The bellows tubular expansion / contraction part 4, the front flange 6 and the rear flange 5 each having a diameter larger than the diameters of the through holes a and b of the hollow wall formed on the outer periphery on both sides of the expansion / contraction part 4, and the front flange 6 The cylindrical insertion guide portion 7 having a diameter smaller than the diameter of the through holes a and b projecting longer than the hollow space between the inner wall material A and the outer wall material B from the inner circumference to the front is flexible by the finger force. It is the pipe material (1) integrally formed in the thickness which can be deform | transformed and can be restored | restored.

  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 diameters of the through holes a and b. It is the formed pipe material (1).

  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, and the length of the insertion portion 15 of the pipe material (1b). In addition, the pipe member (1) is integrally formed with a presser flange 16 having an outer diameter larger than that of each of the through holes a and b on the outer periphery of the rear end portion of the insertion portion 15.

As described above, the three forms (1a), (1b), and (1c) differ in the rear flange 5 side, and each form will be described in detail below.
In the form of the pipe material (1a) shown in FIG.
Moreover, the form of the pipe material (1b) shown in FIG. 2 protrudes rearward from the inner periphery of the rear flange 5 and is integrally formed with an insertion portion 15 having a diameter smaller than the diameters of the through holes a and b. .
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 that of each of the through holes a and b 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 member (1a) whose end portion shown in FIG. 1 is the rear flange 5, the rear flange 5 abuts on the inner side of the hollow wall with respect to the wall material around the through hole a, but the position is fixed. Not.
In addition, the pipe member (1b) in which the insertion portion 15 shown in FIG. 2 is formed is fixed although the insertion portion 15 is inserted into the through hole a and the position thereof is restricted with respect to the through hole a. Not done.
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 FIGS. 1 and 2, it is necessary to fix the end presser member 8 but the presser flange 16 shown in FIG. 3 is formed. In the pipe material (1c), as shown in FIG. 8 (e), the end pressing member 8 may not be used because it is fixed by the pressing flange 16.

The helical or bellows-shaped bellows-like elastic part 4 that is corrugated in parallel is formed longer than the hollow space between the inner wall material A and the outer wall material B, and when this length is reduced and attached to each of the through holes a and b, the inner wall material is restored with a restoring force. The front flange 6 and the rear flange 5 abut against the hollow inner surfaces of A and the outer wall material B in a pressed state.
The insertion guide portion 7 is formed in a cylindrical shape having a diameter smaller than the diameters of the through holes a and 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. Therefore, when the tube material 1 is inserted from one of the through holes a and b, the tube material 1 can be easily pulled out from the other side of the wall without being deformed.

Further, as shown in FIG. 4 and FIG. 8E, the end pressing member is provided with an engaging portion 10 that can be fitted in a bellows-like concavo-convex portion inside the tube material 1 at the tip portion and the inner wall. The cylindrical portion 9 formed longer than the total length of the thickness of the material A or the outer wall material B and the thickness of the front flange 6 or the rear flange 5, and the hollow wall formed on the outer periphery of the rear end of the cylindrical portion 9 An end pressing member 8 having a pressing flange portion 12 having a diameter larger than the diameters of the through holes a and b is used.
In addition, as shown in FIGS. 4A and 4B, the cylindrical portion 9 has a dividing groove 11 that reaches a portion deeper than the position where the engaging portion 10 is located from the front end portion at intervals in the circumferential direction. Form. When the split groove 11 is inserted into the tube material 1, the engagement portion 10 hits the convex portion of the tube material 1, and the engagement portion 10 is elastically deformed inward and smoothly inserted, and contacts the recess and opens outward. It is for enabling engagement.

The mounting of the through duct member into the through holes a and b is shown in order by (a), (b), (c) in FIG. 8 and (d), (e) in FIG. While being deformed with a finger, the inner wall material A and the outer wall material B are inserted into the through holes a and b (FIG. 8C), and the front flange 6 and the rear flange 5 are connected to the inner wall material A and the outer wall material B. Abutting the inner surface to close the gaps around the inner sides of the through holes a and b, and cutting out the protruding portion from the through hole b of the insertion guide part 7 to the outside ((D) in FIG. 8), The end pressing member 8 is inserted from the outside of the rear flange 5 and the insertion guide portion 7, the engaging portion 10 is engaged with the concave and convex portion of the bellows tubular shape and fixed to the tube material 1, and the through hole a, The periphery of the opening is closed from the outside of b (shown in (e) of FIG. 8).
At this time, the pressing flange portion 12 of the end pressing member 8 is not strongly pressed against the wall surface by simply inserting the engaging portion 10 of the end pressing member 8 into the concave and convex portion of the bellows tubular shape.
Therefore, a finger or a tool is inserted through the cylindrical portion 9 in the middle of the bellows-shaped concave and convex portion and hooked, the concave and convex portion is pulled forward, and the concave and convex portion pulled by the engaging portion 10 is engaged and contracted. Let
In this way, the presser flange portion 12 of the end presser member 8 is mounted in a state where it is strongly pressed against the wall surface, and there is no gap between the periphery of the opening of the through hole and the presser flange portion 12.

In addition, when the diameters of the through holes a and b are larger than the diameter of the pipe material 1, the inside of the through holes a and b and the outside of the rear flange are outside the insertion guide portion 7. The center flanges 2 and 3 shown in (a) and (b) are interposed, and as shown in FIG. 8 (d), the leading flange 6 of the tube 1 is formed at the center of each through hole a and b of the hollow wall. And the center of the rear flange 5 is made to overlap.
In this case, the through duct member is attached to the through holes a and b as shown in (a), (b) and (c) of FIG. 7 (shown in (a) of FIG. 7) is inserted into the through holes a and b of the inner wall material A and the outer wall material B from the insertion guide portion 7 while being deformed by a finger (shown in (b) of FIG. 7). 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 close the insides of both through holes a and b (shown in FIG. 7C), and the insertion Projecting portions are cut out from the through holes a and b of the guide portion 7 (shown in FIG. 8D), and the end pressing member 8 is inserted from the outside of the insertion portion 15 and the insertion guide portion 7. Is inserted into the hollow wall (shown in (e) of FIG. 8) to close the periphery of the opening from the outside of the through holes a and b (shown in (d) of FIG. 8). The air-tightness and can be held.

  With the center spacer, even if there is a large gap, the through duct member is provided with a center spacer so that the center of the front flange and the rear flange of the pipe material can be brought to overlap each other at the center of each through hole. Since the periphery of the hole opening is shielded from the outside of the wall by the end pressing member, there is no gap between the front flange and the rear flange around the through hole, and the airtightness of the hollow space can be reliably maintained. Become.

The center spacers 2 and 3 are attached to the outer side of the front flange 6 and the rear flange 5 of the pipe material 1, and are separated from the pipe material 1 and formed integrally with the outer peripheral surface of the pipe material 1 or fixed to the pipe material. In order to be able to arrange it on the outer peripheral surface of the insertion guide part 7 and the insertion part 15 of the tube material 1, it is formed in an annular shape with a diameter corresponding to the diameter of the outer peripheral surface of the insertion part of the pipe material or the insertion guide part. If the center spacer is removable, it can be replaced with an optimum size.
The center spacers 2 and 3 can take various forms such as a bar-like or plate-like protrusion.

Further, the front flange 6 and the rear flange 5 form an inner peripheral groove that becomes a deep cavity that opens inside, and the foamed resin having the elasticity shown in FIGS. 6A and 6B in the cavity. The ring-shaped filling members 13 and 14 made of metal are put and filled.
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.

The ring-shaped filling members 13 and 14 fitted in the inner circumferential groove are fixed in the inner circumferential groove on the half circumference side, and are not fixed in the inner circumferential groove on the other half circumference side from the inner circumferential groove. It should be possible to pull it out of the groove.
Then, since the ring-shaped filling member is fixed in the inner circumferential groove only on the half circumferential side, when attaching the pipe material to the through hole, the other half circumferential side is once pulled out from the inner circumferential groove, so that the diameter is large. The 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.

When the through duct member is described with specific numerical values, the stretchable portion 4 between the rear flange 5 and the front flange 6 is, for example, when the through holes a and b are 65 mm, the bellows tubular portion is It is preferable that the inner diameter is 65 mm, which is substantially equal to the through hole, and the outer diameter is 80 mm.
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 is about 2 mm thick that can be flexibly deformed and restored by the force of a finger. The entire pipe material 1 is formed from the polyethylene.
The size of the outer diameter of the presser flange portion 12 is usually 65 mm for a through hole in an air conditioner. Therefore, the presser flange portion 12 of the front flange 6 and the rear flange 5 has a through hole of that size. Similar to the outer diameter, considering the deformation of the through hole, for example, it may be about 80 mm to about 100 mm. However, in the present invention, both through holes have different diameters or have different center positions. Or the diameter of the presser flange portion 12 is the same as that of the front flange 6 and the rear flange 5 when the through hole is made to correspond in the range of 60 mm to 120 mm. The diameter is preferably about 140 mm, which is larger than the larger diameter.
In addition, about the presser flange part 12, according to the condition of an attachment place, it is also possible to set it as various designs close | similar to circles, such as six shapes, other than a circle.

Next, the structure which shows the various usage forms of the said edge part pressing member 8 of the through-duct structure in which mounting | wearing to the said through-holes a and b of this through-duct member was completed is demonstrated.
The structure showing various types of usage of the end pressing member 8 will be described with reference to FIGS. 10 to 16 when an example in which the ring-shaped filling members 13 and 14 are fitted in the inner circumferential groove is shown.
FIG. 10 shows an example of use 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.

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.
9 to 11 are examples in which the center spacers 2 and 3 are used. In any of these forms, the center spacers 2 and 3 are hidden from the outside so that they cannot be seen, and the pipe material 1 can be fixed to both through holes a and b so that no gaps are formed around them.
12 to 15 show a case where the center spacers 2 and 3 are not used, and there is almost no difference between the outer diameter of the tube material 1 and the inner diameter of the through hole.
10, 14 and 15 are examples using the pipe material (1a), FIG. 9 is an example using the pipe material (1b), and FIG. 11, FIG. 12, and FIG. This is an example using (1c).

In the example of FIG. 9, the through holes a and b have different heights, and the pipe material (1a) serving as the rear flange 5 is used. 3 is an example. Since the center spacer 2 is disposed in the through-hole a, the pipe material 1 is moved to the center of the through-hole a and attached without a gap around it.
Further, as shown in FIG. 9C, the end pressing member 8 is fixed to the pipe member 1 by the engaging portion 10 of the end pressing member 8 being hooked on the concavo-convex portion inside the bellows tube of the telescopic portion 4. The periphery of the opening and the presser flange portion 12 are in contact with each other with no gap between the through holes a and b.

The example of FIG. 10 is an example in which the pipe material (1c) in which the presser flange 16 is formed is used and the center spacers 2 and 3 are used from both sides of the through holes a and b. Since the center spacers 2 are respectively disposed on both sides of the through holes a and b, the tube material 1 is moved to the center of the through holes a and b and attached without a gap.
Further, the engaging portion 10 of the end pressing member 8 is hooked on the concave and convex portion inside the bellows tube of the expansion / contraction portion 4 so that the end pressing member 8 is fixed to the tube material 1 and is opened on both sides of the through holes a and b. The periphery and the presser flange portion 12 are in contact with each other without a gap.

The example of FIG. 11 is an example in which the pipe material (1b) in which the insertion portion 15 is formed is used and the center spacers 2 and 3 are used from both sides in the through holes a and b. Since the center spacer 2 is disposed in the through-hole a, the pipe material 1 is moved to the center of the through-hole a and attached without a gap around it.
Further, the engaging portion 10 of the end pressing member 8 is hooked on the concave and convex portion inside the bellows tube of the expansion / contraction portion 4 so that the end pressing member 8 is fixed to the tube material 1 and is opened on both sides of the through holes a and b. The periphery and the presser flange portion 12 are in contact with each other without a gap.

In the example of FIG. 12, the center spacers 2 and 3 are not used. And the pipe material (1c) in which the pressing flange 16 is formed is used, and the end pressing member 8 is not used for the insertion guide portion 7.
The engaging portion 10 of the end pressing member 8 is hooked on the concavo-convex portion of the bellows tubular portion of the expansion / contraction portion 4 so that the end pressing member 8 is fixed to the tube material 1, and the periphery of the opening and the pressing flange at one through hole a The part 12 is brought into contact with no gap.
The example of FIG. 12 is a case where the diameter of the through-hole b and the outer diameter of the insertion guide portion 7 are almost equal, so the end pressing member 8 is not necessarily required around the insertion guide portion 7. Absent.

The example of FIG. 13 is an example in which the end pressing member 8 is used for both the through holes a and b while using the pipe member (1c) in which the pressing flange 16 is formed.
This is a case where the diameter of the through hole b and the outer diameter of the insertion guide portion 7 are almost equal, but the periphery of the insertion guide portion 7 can be reliably secured by using the end pressing member 8 and the end pressing member 8. The part pressing member 8 side is also fixed.

In the example of FIG. 14, the pipe member (1 a) that is the rear flange 5 is used, and the end pressing member 8 is not used for the insertion guide portion 7.
The example of FIG. 14 is also a case where the diameter of the through hole b and the outer diameter of the insertion guide portion 7 are almost equal, so the end pressing member 8 is not necessarily required around the insertion guide portion 7. Absent.

The example of FIG. 15 is an example in which the pipe member (1a) serving as the rear flange 5 is used and the end pressing members 8 are used in both the through holes a and b. This is a case where the diameter of the through hole b and the outer diameter of the insertion guide portion 7 are almost equal, but the periphery of the insertion guide portion 7 can be reliably secured by using the end pressing member 8 and the end pressing member 8. The part pressing member 8 side is also fixed.
Although the end pressing member 8 has an example in which cylindrical portions 9 having different lengths are used on both sides, the same length eliminates the trouble of selecting left and right.
In the present invention, the same member of the cylindrical portion 9 having the same length can be attached to the different inner wall material A and outer wall material B. And, both the inner wall material A and the outer wall material B are diversified and the thicknesses are variously different, and the fact that they can be used in one kind for such a hollow wall is useful for reducing the cost of members and construction work. It will be a thing.

  As described above, according to the present invention, it is possible to implement various measures according to the actual site.

  And as shown in FIG. 16, the electrical cord 19 and the water pipe etc. which were arrange | positioned by passing the inside of the pipe material 1 with which both through-holes a and b were installed by the air-conditioner installation construction with the indoor unit 20 and the outdoor unit 21, etc. The space between the indoor side and the outdoor side inside the pipe 1 generated between the pipe 18 is filled with a putty 52 so that the indoor side and the outdoor side are blocked, and the openings around both sides of the through holes a and b When the cover is closed, 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 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 Pressing flange part 13 Ring shape Filling member 14 Ring-shaped filling member 15 Insertion portion 16 Holding flange 17 Putty 18 Pipe 19 Electrical cord 20 Indoor unit 21 Outdoor unit A Inner wall material B Outer wall material C Airtight sheet a Through hole b Through hole

Claims (11)

A hollow wall airtight duct structure in which a through duct member made of a tube material 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 has a length longer than a hollow interval between the inner wall member and the outer wall member, and when the tube member is shrunk, a spiral or a bellows tubular expansion / contraction portion undulating in parallel, and both sides of the expansion / contraction portion 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 of the front flange, and projecting from the inner periphery to the front of the front flange longer than the hollow space between the inner wall member and the outer wall member. A tube (1a) made of a synthetic resin in which a cylindrical insertion guide portion having a diameter smaller than the diameter of the through hole is flexibly deformed by a finger and integrally formed to a recoverable thickness, and after the tube Either a tube material (1b) that protrudes rearward from the inner periphery of the flange and integrally forms an insertion portion having a diameter smaller than the diameter of the through hole, or the length of the insertion portion is either the inner wall material or the outer wall material. The length is equal to the wall thickness on one side and the rear end of the insertion portion Any one of the pipes (1c) integrally formed with a presser flange having an outer diameter larger than each through-hole on the outer periphery;
The end pressing member includes an engaging portion having a diameter larger than the inner diameter of the bellows tubular portion that can be fitted to the bellows tubular concave and convex portion inside the tube material, and the thickness of the inner wall material or the outer wall material. A cylindrical portion formed longer than the sum of the thicknesses of the front flange and the rear flange, and a holding flange portion having a diameter larger than the diameter of each through hole of the hollow wall formed on the outer periphery of the rear end of the cylindrical portion; Consisting of
The through-duct member is attached to the through-hole by inserting the through-holes of the inner wall member and the outer wall member into the through-holes of the inner wall member and the outer wall member while deforming the pipe member with fingers. To close the gap around the inside of both through holes, and to cut out the protruding portion from the through hole of the insertion guide part to the outside, and from the outside of the rear flange and / or the insertion guide part The engaging portion is inserted by the restoring force of the bellows tubular portion until the bellows tubular portion that has passed through the end pressing member while expanding the inside of the bellows tubular portion is in a contracted state, and the restoring portion of the bellows tubular portion is used to connect the engaging portion to the bellows tubular shape. A hollow wall airtight duct structure characterized in that the airtightness in the hollow wall can be maintained by engaging with the concave and convex portions and fixing to the tube material so as to block the periphery of the opening from the outside of the through hole. 2. The airtight duct structure of a hollow wall according to claim 1, wherein an outer periphery of the hollow wall is in contact with the through hole of the hollow wall without a gap, and a leading flange and a rear flange of the tube material are formed at the center of each through hole of the hollow wall. An annular center spacer that allows the position to be constrained so that the centers of the pipes overlap is formed on the outer surface of the rear flange of the pipe member facing the inner peripheral surface of each through hole, on the outer peripheral surface of the insertion portion, or on the outer peripheral surface of the insertion guide portion. Or a hollow-walled airtight duct structure characterized by being arranged.   3. The airtight duct structure of a hollow wall according to claim 1 or 2, wherein an airtight sheet is stretched on the inner surface of at least one of the outer wall material and the inner wall material.   The airtight duct structure of a hollow wall according to any one of claims 1 to 3, wherein the indoor side is generated between wires and pipes disposed through a through duct member attached to the through hole. An airtight duct structure with a hollow wall, which is filled with a filler in a gap between the opening on the outside and the outside and closes both sides of the through hole. It is a penetration duct member used for the airtight duct structure of the hollow wall according to any one of claims 1 to 4,
The pipe member has a length longer than the hollow space between the inner wall member and the outer wall member, and when it is shrunk, it has a length that fits within the hollow space. 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 outer periphery, and the inner wall material and the outer wall material projecting longer than the hollow interval 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 through-hole is flexibly deformed by a finger and integrally formed to a recoverable thickness, and a rear flange of the pipe A tube member (1b) integrally protruding an insertion portion having a diameter smaller than the diameter of the through hole and projecting rearward from the inner periphery of the inner wall member or the outer wall member. The outer circumference of the rear end portion of the insertion portion with a length equal to the wall thickness on the side Any one of the pipes (1c) integrally formed with a presser flange having an outer diameter larger than each of the through holes,
The end pressing member includes an engaging portion having a diameter larger than the inner diameter of the bellows tubular portion that can be fitted into the bellows tubular concave and convex portion inside the tube material, and the thickness and the tip of the inner wall material or the outer wall material. A cylindrical portion formed longer than the total length of the flange or the rear flange, and a holding flange portion having a diameter larger than the diameter of 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 the tube material and an end pressing member.   6. The through-duct member according to claim 5, wherein an inner circumferential groove is formed inside the front flange and the rear flange of the pipe material, and the ring-shaped filling is provided with elasticity capable of being filled in the inner circumferential groove. A through-duct member having a 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 6, wherein the penetrating duct member is attached so as to be drawable.   The through-duct member according to any one of claims 5 to 7, wherein a split groove that reaches a portion deeper than a position where the engaging portion is located from the front end portion is formed at intervals in the circumferential direction of the cylindrical portion. A through-duct member characterized by that. The through-duct member according to any one of claims 5 to 8 , the outer periphery of which is in contact with the through-hole of the hollow wall without a gap, and the front flange of the pipe member and the center of each through-hole of the hollow wall A through-duct member characterized in that an annular center spacer is formed or disposed on the outer circumferential surface of the insertion guide portion of the tube material and the insertion portion facing the inner circumferential surface of each through-hole so that the centers of the rear flanges overlap. .   The through-duct member according to claim 9, 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. A through duct member.   The through-duct member according to claim 9, 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 tube insertion portion or the insertion guide portion. A featured through-duct member.

Images