JP2016008457A - Eaves ventilation structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an eaves ventilation structure having a protected connection between a ventilation member and an external wall member and therefore improved fire resistance.SOLUTION: A ventilation member 15 and an external wall member 35 that constitute an eaves ventilation structure 11 include an extended part 20 and a receiving part 39, respectively, and the extended part 20 is engaged slidably in a horizontal direction with the receiving part 39. A thermal-expansion sealing 32 is filled in a space (S) at a connection between the ventilation member 15 and the external wall member 35, the space being formed by an eaves part 19, the extended part 20, and a part 38 facing the eaves, and having an inverted U-shape cross-section in a shorter side direction of a roof material. The configuration allows the connection between the ventilation member 15 and the external wall member 35 to be protected even when a fire breaks out in a house provided with the eaves ventilation structure 11, by the thermal-expansion sealing 32 expanded by the heat.

Description

  The present invention relates to an eaves ventilating structure, and more particularly to an eaves ventilating structure that is attached to an eaves part in order to achieve natural ventilation of a cabin space in a house.

  FIG. 21 is a schematic cross-sectional view showing a state in which the conventional eaves ventilation structure disclosed in Patent Document 1 is attached to the eaves.

  With reference to the figure, the eaves-end ventilation structure 81 is installed in an eave-end portion 83 including a roof material 82 and a nose cover (a part of the outer wall member) 88. The eaves-end ventilation structure 81 is configured around a ventilation member 84 formed by bending a steel plate, and a ventilation component 85 is attached in the ventilation member 84 by an adhesive or double-sided tape (not shown). In addition, the ventilation component 85 has a rectangular cross-section in the width direction of the roofing material 82, and has a rod shape having substantially the same length as the length of the ventilation member 84 in the longitudinal direction. . Specifically, the ventilation parts 85 are integrated by being connected to each other by heat fusion in a state where a plurality of synthetic resin sheets each having an uneven cross-sectional shape are stacked. A large number of ventilation holes (not shown) penetrating from the lower surface to the upper surface are formed. The vent hole is set to a rectangular opening size of approximately 1 mm × 4 mm. A part of the ventilation member 84 is bent into a flat plate shape to form a flange 86. Furthermore, a plurality of openings 87 are formed in the ventilation member 84 along the longitudinal direction of the eaves ventilation structure 81.

  In the attached state of the eaves ventilation structure 81, the tip of the collar part 86 is in contact with the nose cover 88, and a seal member 87 is attached to the upper surface side of the collar part 86. Further, a space between the front end side portion of the lower surface of the collar portion 86 and the nose cover 88 is covered with a sealing material 89.

  In such an eaves-end ventilation structure 81, the ventilation member 84 allows ventilation through a ventilation hole (not shown) of the ventilation component 85 and prevents ventilation of rainwater through the ventilation hole. Demonstrate performance and waterproof performance. Therefore, the outside air that has entered from each of the openings 87 passes through the ventilation holes (not shown) of the ventilation component 85 and moves to the cabin space 90.

  In addition, when a fire occurs in a house equipped with the eaves ventilation structure 81, since the tip of the flange 86 made of a steel plate is in contact with the nose cover 88, the outside air inadvertently enters the back space 90. There is no risk of doing so.

JP 2013-60746 A

  However, in the above-described conventional eaves-end ventilation structure 81, even when the tip of the collar portion 86 is in contact with the nasal cover (part of the outer wall member) 88 when it is installed, the collar portion 86 is deteriorated due to, for example, aging. If a slight gap is formed between the front end of the door and the nose cover 88, there is a risk that outside air will inadvertently enter the back space 90 through the gap. Therefore, it cannot be said that the conventional eaves ventilation structure 81 has sufficient fire resistance.

  This invention was made in order to solve the above problems, and provides an eaves-end ventilation structure with improved fire resistance.

  In order to achieve the above object, an invention according to claim 1 is an eaves ventilating structure installed in an eaves part composed of a roofing material and an outer wall, the ventilation member attached to the roofing material and having a ventilation function; And an outer wall member attached to the outer wall, and a thermal expansion sealing filled in a joint portion between the ventilation member and the outer wall member.

  If comprised in this way, a thermal expansion ceiling will expand | swell by heat, such as a fire.

  According to a second aspect of the present invention, in the configuration of the first aspect of the present invention, the joining portion has a reverse U-shaped cross section in the short direction of the roofing material.

  If comprised in this way, the filling amount of a thermal expansion sealing will become fixed.

  According to a third aspect of the present invention, in the configuration of the second aspect of the invention, a part of the ventilation member and a part of the outer wall member constituting the joint portion are slidably engaged in the horizontal direction, and the ventilation member and the outer wall When the member is closest to the horizontal direction, a part of the ventilation member and a part of the outer wall member are engaged so that an inverted U-shape remains in the joint portion.

  If comprised in this way, the filling space of a thermal expansion sealing is always ensured.

  As described above, according to the first aspect of the present invention, since the thermal expansion sealing expands due to heat such as a fire, the joint portion is protected and the fire resistance is improved.

  In addition to the effect of the first aspect, the invention according to the second aspect exhibits a stable fireproof function since the filling amount of the thermal expansion sealing becomes constant.

  In addition to the effect of the second aspect, the invention described in the third aspect can always provide a space for filling the thermal expansion sealing, and thus can exhibit stable fireproof performance.

It is the top view which showed the external appearance shape of the eaves-end ventilation structure by 1st Embodiment of this invention. It is an enlarged side view of the transversal direction of the roof material of the eaves-end ventilation structure shown in FIG. It is the expanded sectional view seen from the III-III line shown in FIG. It is the reduced view seen from the IV-IV line shown in FIG. It is the reduced view seen from the VV line shown in FIG. FIG. 3 is a reduced view seen from the VI-VI line shown in FIG. 2. It is an exploded view of the eaves-end ventilation structure shown in FIG. FIG. 3 is an enlarged perspective view schematically showing an external shape of a first ventilation component shown in FIG. 2. FIG. 3 is an enlarged perspective view schematically showing an external shape of a second ventilation component shown in FIG. 2. FIG. 3 is an enlarged perspective view schematically showing the outer shape of a first ventilation component and a second ventilation component mounted on the eaves tip shown in FIG. 2. It is a schematic sectional drawing which shows the attachment process to the eaves part of the eaves ventilation structure shown in FIG. It is a schematic sectional drawing which shows the other attachment process following the attachment process shown in FIG. FIG. 13 is a schematic cross-sectional view showing still another attachment process following the attachment process shown in FIG. 12. It is a schematic sectional drawing which shows the other attachment process following the attachment process shown in FIG. FIG. 15 is a schematic cross-sectional view showing still another attachment process following the attachment process shown in FIG. 14. FIG. 16 is a schematic cross-sectional view showing still another attachment process following the attachment process shown in FIG. 15. It is a schematic sectional drawing which shows the other attachment process following the attachment process shown in FIG. It is the figure corresponding to FIG. 17, Comprising: It is a schematic sectional drawing which shows the attachment state to the eaves tip part of the eaves ventilation structure after a thermal expansion ceiling expand | swells. It is a schematic sectional drawing which shows a part of attachment process to the eaves part of the eaves ventilation structure by 2nd Embodiment of this invention. It is a figure corresponding to FIG. 19, Comprising: It is a schematic sectional drawing which shows the attachment state to the eaves tip part of the eaves ventilation structure after a thermal expansion ceiling expand | swells. It is a schematic sectional drawing which shows the attachment state to the eaves part of the conventional eaves ventilation structure disclosed by patent document 1. FIG.

  FIG. 1 is a plan view showing the external shape of an eaves ventilation structure according to the first embodiment of the present invention, and FIG. 2 is an enlarged side view in the short direction of the roof material of the eaves ventilation structure shown in FIG. 3 is an enlarged sectional view taken along line III-III shown in FIG. 1, FIG. 4 is a reduced view taken along line IV-IV shown in FIG. 2, and FIG. 6 is a reduced view seen from the VV line shown in FIG. 6, FIG. 6 is a reduced view seen from the VI-VI line shown in FIG. 2, and FIG. 7 is an exploded view of the eaves ventilating structure shown in FIG. It is.

  With reference to these drawings, the eaves ventilating structure 11 is configured around a ventilation member 15 and an outer wall member 35 having a ventilation function. Both the ventilation member 15 and the outer wall member 35 have a shape extending in the longitudinal direction of a roof material (not shown).

  The ventilation member 15 is formed by bending a steel plate and extends in an obliquely downward direction in the width direction in a parallel state with respect to a roofing material (not shown), and an eaves portion 19 connected to the lower side of the inclined portion 17. Including. In addition, the flat extension part 20 is formed by bending a part of the eaves part 19. In addition, a cross section in the short direction of the eaves tip portion 19 is formed in a U-shape, and a first opening 23 formed by cutting the lower surface 22 inwardly of the eaves tip portion 19 is formed on the lower surface 22 of the eaves tip portion 19. A plurality of roofing materials (not shown) are formed at predetermined intervals in the longitudinal direction. Further, a first ventilation component 45 and a second ventilation component 51, which will be described later in detail, are detachably attached to the eaves portion 19 in the U-shaped portion of the eaves portion 19.

  The outer wall member 35 is formed by bending a steel plate and includes an outer wall fixing portion 37 that is attached to an outer wall (not shown) and an eaves facing portion 38 that is connected to the outer wall fixing portion 37 and faces the eaves portion 19. . Note that a part of the eaves facing portion 38 is bent to form a receiving portion 39 having a U-shaped cross section in the short direction of a roofing material (not shown). The extending portion 20 described above is slidably moved inward of the receiving portion 39 relative to the receiving portion 39 so that the extending portion 20 and the receiving portion 39 are slidable in the horizontal direction. It is configured to engage.

  8 is an enlarged perspective view schematically showing the external shape of the first ventilation component shown in FIG. 2, and FIG. 9 is an enlarged perspective view schematically showing the external shape of the second ventilation component shown in FIG. FIG. 10 is an enlarged perspective view schematically showing the external shapes of the first ventilation component and the second ventilation component attached to the eaves portion shown in FIG.

  With reference to these drawings, the first ventilation component 45 extends in the longitudinal direction of the roofing material (not shown) and has a length substantially the same as the longitudinal length of the eaves portion 19. In addition, the first ventilation component 45 has a cross-section in the short direction of a roof material (not shown) formed in an inverted U shape, and has a shape that can be inserted in the longitudinal direction with respect to the eaves portion 19. ing. Further, the upper surface 46 of the first ventilation component 45 has a second opening 47 formed by cutting and raising the upper surface 46 inward (downward) of the first ventilation component 45. A plurality are formed at predetermined intervals in the direction.

  On the other hand, like the first ventilation component 45, the second ventilation component 51 also extends in the longitudinal direction of the roofing material (not shown) and has a length substantially the same as the length of the eaves portion 19 in the longitudinal direction. doing. The second ventilation component 51 also has a roof material (not shown) whose cross section in the short direction is formed in an inverted U shape, and has a shape that can be inserted in the longitudinal direction with respect to the eaves portion 19. ing. Furthermore, the upper surface 52 of the second ventilation component 51 has a third opening 53 formed by cutting and raising the upper surface 52 inward (downward) of the second ventilation component 51. A plurality are formed at predetermined intervals in the direction. In the eaves portion 19, the second ventilation component 51 is arranged such that the third opening 53 is positioned so as to correspond to the upper side from the second opening 47 of the first ventilation component 45. It is mounted above the ventilation component 45.

  Next, attachment to the eaves part of the eaves ventilation structure 11 shown in FIG. 1 will be described.

  11 to 17 are schematic cross-sectional views showing respective steps of attaching the eaves tip ventilation structure shown in FIG. 1 to the eaves tip portion.

  First, referring to FIG. 11, the eaves ventilation structure 11 is attached to the eaves portion. In the mounting, the extended portion 20 and the receiving portion 39 are engaged with each other in advance so that the outer wall member 35 is integrally held by the ventilation member 15. In this state, the eaves tip ventilation structure 11 is moved from the outer side with respect to the roof material base 64 to which the draining member 61 is attached on the lower tip side. Then, the inclined portion 17 covers a part of the roof material base 64 and the upper surface of each draining member 61, and the inclined portion 17 is in a parallel state with respect to the roof material base 64, so that the eaves ventilation structure 11 is provided. Install.

  According to the present embodiment, since the eaves-end ventilation structure 11 can be attached in a state where the outer wall member 35 is integrally held by the ventilation member 15, there is no possibility that the outer wall member 35 is lost during the attachment process.

  Next, referring to FIG. 12, the first ventilation component 45 is inserted in the longitudinal direction with respect to the eaves portion 19, and the first ventilation component 45 is mounted in the eaves portion 19. At this time, the second opening 47 of the first ventilation component 45 is mounted so as to be positioned corresponding to the upper side from the first opening 23 of the eaves part 19.

  Then, the second ventilation component 51 is inserted in the longitudinal direction with respect to the eaves portion 19, and the second ventilation component 51 is mounted above the first ventilation component 45. At this time, mounting is performed such that the third opening 53 of the second ventilation component 51 is positioned so as to correspond to the upper side from the second opening 47 of the first ventilation component 45.

  According to the present embodiment, each of the first ventilation component 45 and the second ventilation component 51 can be inserted in the longitudinal direction with respect to the eaves portion 19, so the first ventilation component 45 and the second ventilation component 51. As a result, a space above the eaves portion 19 is not required, and each of the first ventilation component 45 and the second ventilation component 51 can be easily installed.

  Then, the roofing 65 and the roofing material 66 are sequentially installed so as to cover the roofing material base 64 and the upper surface of the inclined portion 17.

  Next, referring to FIGS. 13, 14, and 15, the outer wall base 70 and the trunk edge 71 are sequentially installed. Then, the outer wall member 35 is slid horizontally toward the trunk edge 71 so as to be separated from the ventilation member 15, and the outer wall fixing portion 37 is brought into contact with the trunk edge 71.

  According to the present embodiment, since the extending portion 20 slides inward of the receiving portion 39 with respect to the receiving portion 39, the above-described sliding operation is stable and horizontal adjustment can be easily performed. it can. Further, since the strength of each of the receiving portion 39 and the extending portion 20 is improved by bending the steel plate as described above, the engaged state of the receiving portion 39 and the extending portion 20 is stabilized. ing.

Next, referring to FIG. 16 and FIG. 17, the outer wall 72 is attached so that the inner surface of the outer wall 72 is in contact with the outer wall fixing portion 37 in a state where the outer wall fixing portion 37 is in contact with the trunk edge 71. Finally, the caulking agent 74 is filled in the gap between the eaves-end facing portion 38 and the upper end portion of the outer wall 72. Further, a space between the ventilation member 15 and the outer wall member 35, which is formed by the eaves edge portion 19, the extension portion 20, and the eaves edge facing portion 38, and has a reverse U-shaped cross section in the short direction of the roofing material. In (S ₁ ), the thermal expansion sealing 32 is filled, and the attachment of the eaves-end ventilation structure 11 is completed. The thermal expansion sealing 32 is a general-purpose sealing material such as 3M (registered trademark) fire barrier (manufactured by 3M), such as a sealing material that expands 6 times or more in response to heat when the temperature is higher than 350 ° C. The thermal expansion sealant may be used.

  In the eaves-end ventilation structure 11 attached in this way, natural ventilation of the cabin space 55 can be achieved through the first opening 23, the second opening 47, and the third opening 53.

  Moreover, the waterproof performance of the eaves ventilating structure 11 can be adjusted by mounting the first ventilation part 45 and the second ventilation part 51 in the eaves part 19. Furthermore, by forming each of the second opening 47 and the third opening as a cut-and-raised hole as described above, the opening size can be made larger than the opening size of the conventional ventilation component. According to this, since there is no possibility that each of the second opening 47 and the third opening 53 is clogged with dust or the like, there is no possibility that the ventilation performance of the eaves-end ventilation structure 11 is deteriorated.

  FIG. 18 is a diagram corresponding to FIG. 17, and is a schematic cross-sectional view showing a state in which the eaves ventilation structure is attached to the eaves portion after the thermal expansion sealing is expanded.

With reference to the figure, according to the eaves-end ventilation structure 11, when a fire or the like occurs, the thermal expansion ceiling 32 expands due to the heat. Therefore, the joint portion between the ventilation member 15 and the outer wall member 35 can be protected by the expanded thermal expansion sealing 32. As described above, since the cross section in the short direction of the joint portion between the ventilation member 15 and the outer wall member 35 has an inverted U shape, the amount of the thermal expansion sealing 32 filled in the space (S ₁ ) is constant. Therefore, the fireproof function is stably exhibited.

  FIG. 19 is a schematic cross-sectional view showing a part of the attaching process to the eaves portion of the eaves ventilation structure according to the second embodiment of the present invention.

  With reference to the drawings, the basic structure of the eaves ventilating structure according to this embodiment is the same as that of the eaves ventilating structure according to the first embodiment, and therefore, differences will be mainly described here.

In this embodiment, if the length of the extending portion 20 in the horizontal direction of the eaves ventilation structure 31 and the length of the inner side of the receiving portion 39 are d ₁ and d ₂ , respectively, d ₁ > d ₂ Is set to Thereby, when the eaves part 19 and the eaves part facing part 38 are closest to the horizontal direction, the joint part between the ventilation member 15 and the outer wall member 35 has the eaves part 19, the extension part 20, and the eaves part facing part 38. A space (S ₂ ) in which the cross-section in the short direction of the roof material is formed in an inverted U shape remains. The space (S ₂ ) is filled with the thermal expansion sealing 32.

In the present embodiment, the lower end side and the lower surface side of the draining member 61, the lower upper surface side of the inclined portion 17, and the inner sides of the first ventilation component 45 and the second ventilation component 51 are further provided. Although each fitted with a thermal expansion material 33a-e, by attaching a thermal expansion sealing 32 at least on the above-mentioned space (S _2), the effect to be described later are exhibited.

  FIG. 20 is a diagram corresponding to FIG. 19, and is a schematic cross-sectional view showing a state in which the eaves ventilation structure is attached to the eaves portion after the thermal expansion ceiling is expanded.

With reference to the figure, according to the eaves-end ventilation structure 31, when a fire or the like occurs, the thermal expansion ceiling 32 expands due to the heat. According to this, the joint portion between the ventilation member 15 and the outer wall member 35 can be protected by the expanded thermal expansion sealing 32. Further, by setting the length of the extending portion 20 and the inner length of the receiving portion 39 as described above, the joint portion between the ventilation member 15 and the outer wall member 35 is filled with the thermal expansion sealing 32. Space (S ₂ ) is always secured. Therefore, stable fireproof performance can be exhibited.

  In each of the above embodiments, the ventilation member has a specific shape. However, the ventilation member may have another shape as long as it is attached to the roofing material and has a ventilation function.

  In each of the above embodiments, the ventilation member has a specific ventilation function by including a specific ventilation component, but may have a configuration having another ventilation function.

  Further, in each of the above-described embodiments, the outer wall member has a specific shape, but may have another shape as long as it is attached to the outer wall.

  Further, in each of the above embodiments, the thermal expansion sealing is filled in a specific portion of the joint portion between the ventilation member and the outer wall member. The portion may be filled.

  Further, in each of the above-described embodiments, a specific thermal expansion sealing is used, but other thermal expansion sealing may be used as long as it expands at least due to heat such as fire.

  Further, in each of the above embodiments, the cross-section in the short direction of the roofing material at the joint portion has a specific shape, but other cross-sectional shapes may be used as long as the thermal expansion sealing can be filled. .

  Furthermore, in each of the above embodiments, the specific portions of the ventilation member and the outer wall member are joined by a specific method, but may be joined by other methods.

  Furthermore, in each of the above-described embodiments, when the specific portions of the ventilation member and the outer wall member are closest to the specific direction, the joint portion has a specific cross-sectional shape in the short direction of the roofing material. The other part of each of the ventilation member and the outer wall member may be closest to the other direction. In addition, the cross-sectional shape in the short direction of the roof material at the joint portion at that time may be another shape.

  Further, in each of the above embodiments, the ventilation member has a shape that can hold the outer wall member, but the ventilation member may have a shape that cannot hold the outer wall member.

  Furthermore, in each of the above-described embodiments, the eaves ventilation structure corresponding to the inclined roof is formed by using the ventilation member including the inclined portion. However, by changing the shape of the ventilation member, another roof such as a flat roof is formed. It is good also as the eaves ventilation structure corresponding to.

  Furthermore, in each of the above embodiments, the ventilation member and the outer wall member are each formed by bending a steel plate, but at least one of the ventilation member and the outer wall member may be formed by other than the bending of the steel plate.

  Further, in each of the above embodiments, a part of the ventilation member and a part of the outer wall member are slidably engaged, but a structure in which these are not slidably engaged may be employed.

DESCRIPTION OF SYMBOLS 11 ... Eaves-end ventilation structure 15 ... Ventilation member 17 ... Inclined part 19 ... Eaves-end part 20 ... Extension part 35 ... Outer wall member 38 ... Eaves-end opposed part 39 ... Receiving part .

Claims (3)

An eaves ventilation structure to be installed on the eaves part consisting of roofing material and outer wall,
A ventilation member attached to the roofing material and having a ventilation function;
An outer wall member attached to the outer wall;
An eaves-end ventilation structure including a thermal expansion sealing filled in a joint portion between the ventilation member and the outer wall member.   The eaves ventilating structure according to claim 1, wherein a cross section of the roof material in the short direction has an inverted U shape. A part of the ventilation member and a part of the outer wall member constituting the joint portion are slidably engaged in a horizontal direction,
The part of the ventilation member and the part of the outer wall member are engaged with each other so that an inverted U-shape remains in the joint portion when the ventilation member and the outer wall member are closest to each other in the horizontal direction. 2. Eaves-end ventilation structure according to 2.

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