JP2011026913A - Ventilation stopping edge - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilation stopping edge for forming a ventilating wall structure in which moisture releasing function, dewing preventing function, heat insulating function, waterproofing function, and so forth are improved. <P>SOLUTION: This ventilation stopping edge used at the eaves soffit 23 portion of the ventilating wall structure in which a ventilation layer γ is formed between a substrate α and an external wall member A includes a vertical flat surface-shaped fixed surface 2, a projecting surface 3 projecting from the top end of the fixed surface 2 to the indoor side generally horizontally, a plurality of ventilation holes 4 formed in the projecting surface 3, an upper surface 5 projecting from the top end of the fixed surface 2 further upward, an inclined surface 6 formed by extending a part of the fixed surface 2 or the upper surface 5 diagonally downward on the outdoor side, an upper piece 8 projecting from the front end of the inclined surface 6 upward beyond the top end of the upper surface 5, a plurality of suction/discharge holes 9 formed at the root of the upper piece 8, and a lower piece 10 projecting from the front end of the inclined surface 6 downward. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a ventilation stop edge for forming a ventilation wall structure with improved moisture release function, condensation prevention function, heat insulation function, waterproof function, and the like.

  When the wall is hermetically sealed, there is no place for water vapor to escape, and condensation occurs on the back of the outer wall material or on the wall if the outside air temperature is low. Therefore, an air layer (ventilation layer) having a thickness of about 20 mm is provided between the outer wall material and the housing in order to discharge water vapor in the wall to the outside air to prevent internal dew condensation and to discharge moisture absorbed by the base and pillar to the outside air. ), A so-called ventilation method, has been developed, and a parting edge and a structure for exhausting air from the eaves are considered. (For example, refer to Patent Documents 1 to 5).

Japanese Patent Application Laid-Open No. 08-013636 JP 09-302907 A Japanese Patent Laid-Open No. 2000-230282 JP 2001-323573 A JP 2002-317549 A

  However, although Patent Documents 1 to 5 can discharge moisture, since the outside air passes through the back surface of the outer wall material, even if a heat insulating member is formed on the outer wall material, the effect as a heat insulating material can be exhibited. It was said that it did not function as a heat insulator. Of course, it was assumed that there was no heat insulation in calculating the heat insulation of the outer wall of the house. In addition, the amount of air that moves in the ventilation layer varies greatly depending on the outside wind. Especially when the wind is strong, the ventilation rate increases. There was a drawback that good thermal insulation could not be demonstrated. For this reason, even when the wind is strong, it has been a big problem to suppress the amount of ventilation in the ventilation layer.

  In order to solve such drawbacks, the present invention provides a vertical flat fixed surface and an upper end of the fixed surface in a stop edge used for an eaves portion of a vent wall structure in which a vent layer is formed between a base and an outer wall material. A projecting surface projecting substantially parallel to the indoor side, a plurality of vent holes formed on the projecting surface, an upper surface projecting upward from the upper end of the fixed surface, and a fixed surface or a part of the upper surface facing downward on the outdoor side An inclined surface protruding obliquely, an upper piece protruding upward from the upper end of the upper surface and protruding above the upper end of the upper surface, a plurality of intake and exhaust holes formed at the base of the upper piece, and an inclined surface A vent stop edge formed from a lower piece having a tip projecting downward is provided.

  According to the vent stop edge according to the present invention, (1) even when the wind is strong, the air flow rate in the vent layer can be kept constant. (2) The outer wall material located outside the ventilation layer functions as a heat insulating material. (3) Due to the heat insulation of the outer wall material, the temperature of the ventilation layer, the back surface of the outer wall material and the wall is kept high, and the occurrence of internal dew condensation is further suppressed. There are features and effects.

It is explanatory drawing which shows a typical example of the ventilation stop edge which concerns on this invention. It is explanatory drawing which shows a typical example of the ventilation stop edge which concerns on this invention. It is explanatory drawing which shows the construction state of the ventilation stop edge which concerns on this invention. It is explanatory drawing which shows the construction state of the ventilation stop edge which concerns on this invention. It is explanatory drawing which shows a typical example of the ventilation wall structure using the ventilation stop edge which concerns on this invention. It is explanatory drawing which shows a typical example of the ventilation wall structure using the ventilation stop edge which concerns on this invention. It is explanatory drawing which shows a typical example of the ventilation wall structure using the ventilation stop edge which concerns on this invention. It is explanatory drawing which shows a typical example of the outer wall material used for the ventilation wall structure which uses the ventilation stop edge which concerns on this invention. It is explanatory drawing which shows the other Example of the ventilation stop edge which concerns on this invention. It is explanatory drawing which shows the other Example of the ventilation stop edge which concerns on this invention. It is explanatory drawing which shows the other Example of the ventilation wall structure using the ventilation stop edge which concerns on this invention. It is explanatory drawing which shows the other Example of the ventilation wall structure using the ventilation stop edge which concerns on this invention. It is explanatory drawing which shows the other Example of the ventilation wall structure using the ventilation stop edge which concerns on this invention.

  Hereinafter, the ventilation stopper according to the present invention will be described in detail with reference to the drawings. 1 and 2 are cross-sectional views showing a ventilation stop edge 1 according to the present invention. FIGS. 3 to 7 are explanatory views showing a typical example of a ventilation wall structure using the ventilation stop edge 1 according to the present invention. (A)-(d) is explanatory drawing which shows the outer wall material A. FIG. In the figure, α indicates a base, β indicates a fixture such as a nail, and γ indicates a ventilation layer.

  As shown in FIGS. 1 (a), 1 (b), and 2 (a) to 2 (c), the ventilation stop edge 1 has a vertically flat fixed surface 2 and the upper end of the fixed surface 2 substantially parallel to the indoor side. A protruding projection surface 3, a plurality of vent holes 4 formed at a fixed pitch on the projection surface 3, an upper surface 5 that protrudes further upward from the upper end of the fixing surface 2, and an upper end of the fixing surface 2 that is inclined downward on the outdoor side And the upper surface 8 protruding upward from the upper end of the upper surface 5, and a plurality of suction / absorption formed at a fixed pitch at the base of the upper surface 8. The exhaust hole 9, the lower piece 10 projecting downward from the tip of the inclined surface 6, the decorative surface 7 formed from the upper piece 8 and the lower piece 10, and the lower end of the decorative surface 7 inclined downward on the indoor side Intake / exhaust from the protruding inclined decorative surface 11, the receiving surface 12 protruding upward from the tip of the inclined decorative surface 11, and the space H between the upper surface 5 tip and the upper piece 8 tip It is an elongated member formed with road 5a. The material is made of a metal material or a plastic material.

  The fixing surface 2 is a portion for fixing the ventilation stop edge 1 on the base α.

  The projecting surface 3 is a portion for forming the vent hole 4, and the amount of ventilation in the vent path γ can be adjusted by changing the formation pitch and size of the vent holes 4. The protrusion width t of the protrusion surface 3 is substantially the same as the thickness T of a ventilation layer forming member 18 to be described later. Further, since the ventilation layer forming member 18 is in the way of the protruding surface 3, as shown in FIG. 2C, the protruding surface 3 has the same interval P as the formation pitch of the ventilation layer forming member 18 and the ventilation layer forming member 18. It is formed by cutting out with the same width W as the width.

  A plurality of ventilation holes 4 are formed on the projecting surface 3 at a constant pitch, and are used for discharging moisture from the room N released from the indoor N to the ventilation layer γ to the outdoor G.

  The upper surface 5 forms an intake / exhaust passage 5a from the space H between the tips of the upper piece 8, and functions as an intake passage for taking in outside air, an exhaust passage for exhausting dirty air inside, and moist air. is there.

  The inclined surface 6 is formed so as to be able to drain from the intake / exhaust hole 9 to the outdoor G by the inclination when the rain and rain enters the inside through the intake / exhaust hole 9.

  The upper piece 8 functions as a decorative surface, functions as a construction surface whose tip abuts against the eaves 23, and also forms a space H.

  A plurality of suction / exhaust holes 9 are formed at regular intervals on the inclined surface 6 and the lower end portion of the upper piece 8, and function as an intake port for taking in outside air, an exhaust port for exhausting dirty air inside, and moist air. is there.

  The lower piece 10 and the inclined decorative surface 11 function as a decorative surface, cover the upper end (cut surface) of the outer wall material A, protect the exterior material A from wind and rain, and improve the aesthetics. Out. Further, the receiving surface 12 is a portion for making surface contact with the exterior material A and strengthening the integration.

  Further, when the opening area of the suction / exhaust hole 9 is compared with the opening area of the vent hole 13 formed in the protruding surface 3, the opening area of the intake / exhaust hole 9 is larger than the opening area of the vent hole 4. To do. Of course, the opening area of the suction / exhaust passage 5a> the opening area of the vent hole 4, the opening area of the suction / exhaust passage 5a> the opening area of the suction / exhaust hole 9.

  By forming in this way, the air flowing from the back of the hut K flows not in the direction of the ventilation path γ but in the direction of the ventilation stop edge 1, and the amount flowing into the ventilation path γ can be suppressed.

The base α is formed from an interior material 13, a moisture-proof layer 14 such as a polyethylene sheet, a casing 15 such as a main pillar and a stud, and a heat insulating material 16 such as glass wool formed between the casings 15.

  Reference numeral 17 denotes a wind-proof and moisture-permeable layer (indicated by a two-dot chain line), a moisture-permeable waterproof sheet (nonwoven fabric that passes only moisture without passing through wind and rain), or a moisture-permeable waterproof board (a highly moisture-permeable sizing board, sizing insulation) Board, etc.) or plywood, OSB, etc., and formed from a member having moisture permeability, windproof property, waterproof property, and the like.

  Reference numeral 18 denotes a ventilation layer forming member, which is formed so that the ventilation layer γ communicates with the upper and lower openings, and is, for example, a longitudinal body edge formed vertically at a constant interval. Further, if the ventilation layer γ is formed so as to communicate with the openings described later (upper opening 19, lower opening 20, shed back ventilation opening 21), it may be a horizontal trunk edge formed horizontally at a constant interval. Of course, instead of the ventilation layer forming member 18, a plate material on which the ventilation layer γ (groove) is formed may be formed partially or entirely. The material of the ventilation layer forming member 18 is wood, metal material, plastic material, or the like.

  Reference numeral 19 is an upper opening, 20 is a lower opening, and 21 is a ventilating opening at the back of the hut, which communicates with the ventilation layer γ formed by the ventilation layer forming member 18 and exits from the room N released from the indoor N to the ventilation layer γ. It is an outlet for discharging moisture to the outdoor G. Of course, the upper opening 19, the lower opening 20, and the attic ventilation opening 21 also function as an inlet for air taken in to discharge moisture.

  The upper opening 19 is formed between the spar portion of the outer wall material A and the eaves 23 so as to communicate with the ventilation layer γ. In the figure, the upper opening 19 communicating with the ventilation layer γ is formed by the ventilation stop edge 1. It is a thing.

  The lower opening 20 is formed between the outer wall material A and the base part D, and the lower opening 20 communicating with the ventilation layer γ is formed by the drainer 22.

The cabin back ventilation opening 21 is formed to exhaust moisture generated in the indoor N from the cabin back K to the outdoor G via the ventilation layer γ.

  A is an outer wall material having heat insulation (hereinafter simply referred to as an outer wall material), and is a member having functions such as fire resistance, waterproofness, airtightness, and weather resistance as other functions. For example, a metal siding material as shown in FIGS. 8A to 8D is used. In particular, the outer wall material A made of a metal siding material has a particularly heat insulating property in which a core material A3 such as a synthetic resin foam (plastic foam) is sandwiched between a plate material obtained by roll-molding a metal surface material A1 and a back surface material A2. It is the outer wall material A which has.

Furthermore, the action of the air vent edge according to the present invention will be described with reference to FIGS. That is, as shown in FIG. 2 (a), when the air flows from the outdoor G into the hut K, the hut K has a negative pressure, the eaves 23 vicinity has a positive pressure, and the base portion has a positive pressure. It is sucked mainly from the air vent edge 1 of the eave heaven 23 portion having a low resistance, and is not so much sucked from the base portion D direction (the air flow layer γ) having a high resistance. The heat insulating property is exhibited. Usually this is the state.

In addition, as shown in FIG. 4 (b), when air flows from the back of the hut K to the outdoor G from the ventilation stop edge 1, the wind blows in parallel to the wall surface, or the wall surface is leeward. The air pressure is lower in the base near the eaves 23 and near the ground than in the back of the hut K, and the air flows from the back of the hut K to the outdoor G through the ventilation stop 1 and the base D The amount flowing from the direction (ventilation layer γ) to the outdoor G is suppressed, the temperature of the vent layer γ does not change, and the heat insulation of the outer wall material A is exhibited.

  In this way, the inflow and outflow of air into the shed K does not affect the air passage γ, and the amount of air flowing in the air passage γ can be suppressed to the level of natural convection. It functions and the heat insulation of the outer wall material A is also exhibited. The moisture generated from the indoor N and flowing into the ventilation layer γ is always discharged to the outdoor G regardless of the outflow of air to the outdoor G and the inflow of air to the indoor N by natural convection of the ventilation layer γ. It is.

  Next, the construction method of the ventilation stop which concerns on this invention is demonstrated using FIGS. First, a wind- and moisture-permeable layer 17 (permeating layer) is formed on a base α formed by an interior material 13, a moisture-proof layer 14 such as a polyethylene sheet, a casing 15 such as a main pillar and a stud, and a heat insulating material 16 such as glass wool formed between the casings 15. A wet waterproof sheet).

  Thereafter, a plurality of ventilation layer forming members 18 having a thickness of about 18 mm and a width of about 45 mm are fixed vertically at a pitch of 455 mm. At this time, the air-permeable layer forming member 18 is formed so as to protrude inward from the portion where the eaves 23 is formed.

When the formation of the ventilation layer forming member 18 is completed, the eaves top 23 is formed, and then the upper edge 7 and the lower opening 8 are formed. A drainer 22 is fixed to the lower end of the ventilation layer forming member 18.

  Thereafter, the outer wall material A as shown in FIG. 8A is constructed on the ventilation layer forming member 18 by using various kinds of accessories, and the construction is completed.

  What has been described above is only one embodiment of the air vent edge according to the present invention, and it can also be formed as shown in FIGS. 9 (a) to (c) to FIG.

  FIGS. 9A to 9C and FIGS. 10A to 10D are explanatory views showing other examples of the ventilation stop edge 1.

  In FIG. 11, a waterproof layer 24 (shown by a dotted line) is formed on the ventilation layer forming member 18 so that rainwater or the like does not enter the ventilation layer γ. For example, a waterproof sheet such as asphalt felt.

  FIG. 12 is a ventilation wall structure in which an eaves vent 23 is formed in the eave ceiling 23, and FIG. 13 is an aeration formed so that the ventilation layer forming member 18 is formed up to the eave ceiling 23 and the cabin back K and the ventilation path γ are not communicated. It is a wall structure.

  According to the ventilation stopper according to the present invention, in the structure in which the ventilation layer γ is formed on the back surface of the outer wall material A, the outer wall material A is not recognized as a heat insulating material even if a member having a heat insulating property is formed as the outer wall material A. However, it is the original significance of the ventilation layer γ by forming three openings on the wall body, the ventilation opening in the hut, the upper opening, and the lower opening so that only a small amount of air moves in the ventilation layer γ. By taking advantage of the effect of preventing internal condensation, and further by providing the heat insulation effect of the heat insulating outer wall material A, it is possible to keep the temperature of the back surface of the outer wall material A and the wall high, thereby saving energy and preventing condensation in the wall. It becomes the structure which can raise. This is different from the structure that prevents the dew condensation by moving the outside air through the ventilation path between the back surface of the outer wall material A and the base as in the conventional ventilation structure. Therefore, the performance of the outer wall material A having heat insulation can be effectively utilized.

α Base β Fixture γ Vent layer A Outer wall material A1 with heat insulation A1 Metal surface material A2 Back surface material A3 Core material D Base part G Outdoor K Hut back N Indoor 1 Vent stop 2 Fixed surface 3 Protruding surface 4 Vent hole 5 Upper surface 5a Suction / exhaust passage 6 Inclined surface 7 Decorative surface 8 Upper piece 9 Suction / exhaust hole 10 Lower piece 11 Inclined decorative surface 12 Receiving surface 13 Interior material 14 Moisture-proof layer 15 Housing 16 Heat-insulating material 17 Wind-proof / breathable layer 18 Venting layer formation Member 19 Upper opening 20 Lower opening 21 Hut back ventilation opening 22 Drainer 23 Eave top 24 Waterproof layer 25 Eve vent

Claims (1)

In the edge used for the eaves portion of the ventilation wall structure in which a ventilation layer is formed between the base and the outer wall material, a vertical flat fixed surface, and a protruding surface protruding substantially parallel to the indoor side at the upper end of the fixed surface A plurality of ventilation holes formed on the projecting surface, an upper surface projecting further upward from the upper end of the fixed surface, an inclined surface projecting by tilting the fixed surface or part of the upper surface downward on the outdoor side, and the tilt An upper piece projecting upward from the upper end of the upper surface and projecting upward from the upper end of the upper surface; a plurality of suction and exhaust holes formed at the base of the upper piece; and a lower piece projecting downward from the distal end of the inclined surface; Ventilation stop which is formed from

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