JP6154268B2 - Ventilation device - Google Patents

Description

  The present invention relates to a ventilation device provided between an outer wall side wall surface of a building and a vertical plate such as a windbreak, a nasal concealment, or a curtain plate provided separately from the outer wall side wall surface.

  Conventionally, there is a case where the finding of the gable of the gable of the building is made small by reducing the back of the gable in order to improve the design. In this case, since it is not possible to provide a sufficient waterproof start-up on the building frame side, when providing a ventilation opening for ventilation on the back of the eaves, sufficient consideration must be given to injecting rainwater into the building. Moreover, the eaves back part may be restricted in fire prevention by the Building Standard Law, and the eaves back ventilation part preferably conforms to a predetermined fire prevention standard based on the Building Standard Law. Patent documents 1-6 are proposed as an example of a venting device in consideration of waterproofness.

Japanese Utility Model Publication No. 62-079008 Japanese Utility Model Publication No. 63-010333 Japanese Patent No. 3080759 JP 2007-239312 A JP 2003-201742 A JP 2009-185565 A

  In order to improve the waterproofness of the ventilation device, it is conceivable to increase the ventilation resistance by providing a plurality of ventilation slits or multiple layers of water return, but this makes the ventilation device complicated. In addition, there is a problem that it is difficult to easily provide a stable air passage.

  The present invention is intended to solve such problems, and provides a ventilation device that can easily secure a stable ventilation path while improving waterproofness and fireproofing.

  A first configuration of a venting device according to the present invention for achieving the above object is a venting device provided between an outer wall side wall surface of a building and a vertical plate provided separately from the outer wall side wall surface, A ventilation member in which a fixed piece fixed to the outer wall side wall surface and a pair of ventilation pieces connected to the upper and lower sides of the fixed piece and each formed with a slit hole for ventilation are formed in a U-shaped cross section; Insulating the upper piece that can cover the upper slit hole of the ventilation member from the upper side, the lower ventilation piece of the ventilation member and the finish of the upper end of the exterior material provided on the outer wall side wall surface side A water return member having a U-shaped cross section having a lower piece that can be inserted, and a ventilation member inserted between the ventilation pieces of the ventilation member, and can cover the lower slit hole of the ventilation member from above. A shielding member, and the outside air and the indoor space are The gap between the upper piece of the water return member and the vertical plate passes from the lower slit hole of the ventilation member through the gap between the fixing piece of the ventilation member and the shielding member and the upper slit hole of the ventilation member. It is characterized by being ventilated through.

  Further, the second configuration of the ventilation device according to the present invention is the positioning member provided in the inner wall surface of the water return member, wherein the ventilation member is fitted into the water return member in the first configuration. It is characterized by being positioned by.

  The third configuration of the venting device according to the present invention is the non-combustibility in which, in the first and second configurations, a recess is provided in the lower ventilation piece of the ventilation member, and the recess is expanded by heat. A volume expansion material is provided.

  Moreover, the 4th structure of the ventilation apparatus which concerns on this invention is the said 1st-3rd structure. One end part is latched by the said vertical board, and the other end part is a slit hole on the lower side of the said ventilation member. It has the latching member inserted and latched from the lower side, It is characterized by the above-mentioned.

  According to the first configuration of the ventilation device according to the present invention, the ventilation resistance can be increased by performing ventilation through the ventilation slit holes respectively formed in the pair of ventilation pieces of the ventilation member. Can reduce the rainwater blowing into the water. In addition, covering the lower slit hole of the ventilation member with the shielding member from above, and further covering the upper slit hole of the ventilation member with the upper piece of the water return member can further increase the ventilation resistance. It is possible to further reduce the blowing of rainwater into the building. Also, it is difficult for hot air to enter the building.

  Moreover, the structure which fitted the ventilation | gas_flowing member in the inside of the water return member can install in the part with comparatively few the dimension of the height direction of the eaves of a building. Further, the protruding width of the ventilation member can be set as the protruding size of the eaves, and the protruding size of the eaves can be relatively reduced, so that the heat receiving area of the back of the eave can be reduced in the event of a fire.

  With this, when considering the fire resistance of the back of the eaves, the eaves ceiling materials such as fiber reinforced cement boards and ceramics siding boards that are generally excellent in fire and heat insulation are omitted, and the eave back has fire resistance only with a metal ventilation device. Can be configured. This facilitates the procurement of members, reduces the on-site processing setup due to the difference in materials, and facilitates the processing.

  In addition, after fixing the water return member to the outer wall side, the ventilation member is fitted into the water return member and fixed to the outer wall side, and the shielding member is joined to the ventilation piece on the upper side of the ventilation member. A stable air passage can be formed.

  In addition, by providing a lower piece of the water return member that can insulate the lower ventilation piece from the lower side of the ventilation member and the finish of the upper end of the exterior material, even if rainwater blows into the ventilation member, the lower outer wall Water leakage into the inside can be waterproofed.

  Moreover, the windbreak member fixed to the eaves side and extended to the downward direction of the ventilation piece of the lower side of a ventilation member can be used as a vertical board.

  Moreover, according to the 2nd structure of the ventilation apparatus which concerns on this invention, the positioning of the ventilation member fitted inside this water return member can be performed by the positioning member provided in the inner wall surface of the water return member, and the water return member The assemblability when the ventilation member is fitted into the interior of the housing is improved.

  Further, according to the third configuration of the ventilation device according to the present invention, the non-combustible volume expansion material that expands by heat is provided in the recess provided in the ventilation piece on the lower side of the ventilation member. As the temperature rises, the non-combustible volume expansion material is thermally expanded to block the inside of the ventilation member provided with the slit holes for ventilation, thereby blocking the spread of fire and improving the fireproof performance.

  Moreover, according to the 4th structure of the ventilation apparatus which concerns on this invention, since a vertical board and a ventilation member are latched by a latching member, the eaves materials, such as wooden to which the vertical board was fixed, spread and disappear. Even in the case of falling, it is possible to prevent the vertical plate from falling and to improve the fire resistance.

It is a section explanatory view showing the composition of the ventilation device concerning the present invention. It is the elements on larger scale of the ventilation apparatus periphery of FIG. It is a disassembled perspective view which shows the structure of the ventilation apparatus which concerns on this invention. It is sectional explanatory drawing explaining a mode that each member of the ventilation apparatus which concerns on this invention is combined. (A) is an exploded perspective view showing a state where the other end portion of the locking member whose one end portion is locked to the vertical plate is inserted into the ventilation slit hole of the ventilation member and locked, (b) is the vertical plate It is a perspective explanatory view which shows a mode that the other end part of the latching member by which one end part was latched to was inserted and latched in the slit hole for ventilation | gas_flowing of a ventilation member. (A)-(c), the one end part of the latching member of the ventilation apparatus which concerns on this invention is latched to a vertical board, and the other end part of this latching member is inserted in the slit hole for ventilation | gas_flowing of a ventilation member. It is sectional explanatory drawing which shows a mode that it latches. It is an isometric view explanatory drawing explaining a mode that each member of the ventilation apparatus which concerns on this invention was combined. (A)-(d) is the front view which shows the structure of a locking member, a side view, a rear view, and a bottom view. (A) Cross-sectional explanatory drawing which shows a mode that a nonflammable volume expansion material expand | swells with the heat | fever of a fire etc., obstruct | occludes the ventilation path of an aeration apparatus, and interrupts a fire spread, (b) is the wooden of which the vertical board was fixed It is sectional explanatory drawing which shows a mode that a vertical plate is latched by a latching member and the fall of this vertical plate is prevented when a base material spreads and disappears.

  An embodiment of the ventilation device according to the present invention will be specifically described with reference to the drawings.

  1 and 2, there is a ventilation device A for ventilating the outside air and the indoor space between an outer wall 3 that is an outer wall side wall surface of the building 1 and a windbreak member 9 that is a vertical plate provided apart from the outer wall 3. Is provided. The ventilation device A is connected to a fixing piece 6a fixed to the base material 5 of the outer wall 3 by screws 11 serving as fixing members, and bent at substantially right angles to the fixing piece 6a on both sides of the fixing piece 6a. 1 and FIG. 2 on the upper side of the ventilation member 7, and a water return piece 6 b as an upper piece that can cover the ventilation slit hole 7 b 1 from above, and the lower side of the ventilation member 7 in FIG. 1 and FIG. The water return member 6c has a U-shaped cross-sectional shape and a water return piece 6c serving as a lower piece that can insulate the finish of the upper end of the exterior material 3a. The connecting portion in the longitudinal direction of the water return member 6 may be fitted with overlapping ends, provided with a joint cover (not shown), attached with waterproof tape, coked, or a combination thereof. Pay. By making the water return member 6 into a simple U shape, the waterproof treatment of the connection part between the water return members 6 can be easily performed.

  Furthermore, the ventilation device A has a ventilation member 7 formed in a U-shaped cross section that is fitted inside the water return member 6. The ventilation member 7 is fixed to the base material 5 of the outer wall 3 by fixing screws 7a to the outer wall side with screws 11, and is connected to both sides of the fixing piece 7a by being bent substantially at right angles to the fixing piece 7a. And a pair of ventilation pieces 7b and 7c. In the pair of ventilation pieces 7b and 7c, ventilation slit holes 7b1 and 7c1 are formed at a predetermined pitch, respectively.

  Further, the ventilation device A is fixed to the lower part of the base plate 12 of the eaves 2 and is Z-shaped in cross section that is fixed by screws 11 to the base material 13 that protrudes from the outer wall 3 to the outdoor side (left side in FIG. 1). It has the shape of the windbreak member 9. As shown in FIG. 1, the windbreak member 9 fixed to the eaves 2 side (eave side) is below the ventilation piece 7 c provided on the lower side of FIG. 1 among the pair of ventilation pieces 7 b and 7 c of the ventilation member 7. Extended. A roof material 22 is provided on the top of the field board 12.

  Further, the ventilation device A has an outdoor side end (left side in FIG. 2) of the ventilation piece 7b provided on the upper side of the ventilation member 7 in FIG. A fixing piece 10a fixed and joined to the surface (left side of FIG. 2) via a double-sided tape 14 serving as a fixing member, and bent and connected at a substantially right angle to the fixing piece 10a. As shown in FIG. 7, the pair of upper and lower ventilation pieces 7b and 7c of the ventilation member 7 are inserted between the ventilation slit holes 7b1 and 7c1 so as to face each other, and as shown in FIG. 7, between the slit holes 7b1 and 7c1. A shielding member 10 having a shielding piece 10b that shields the ventilation 15 that directly passes through.

  The shielding piece 10b of the shielding member 10 is inserted between the ventilation pieces 7b and 7c (ventilation pieces) of the ventilation member 7, and has a ventilation slit hole 7c1 of the lower ventilation piece 7c of the ventilation member 7 shown in FIG. Can be covered from above.

  A sealing member made of an ethylene-propylene-diene terpolymer (EPDM) -based foam on the surface of the fixing member 10a of the shielding member 10 on the outdoor side (left side in FIG. 2) through a double-sided tape 14 serving as a fixing member. 16 is fixed.

  Also, the U-shaped cross-sectional ventilation member 7 fitted inside the U-shaped water return member 6 is arranged on the inner wall surface of the fixed piece 6a of the water return member 6 on the outdoor side (left side in FIG. 1). Positioning is performed by a positioning member 17 having a U-shaped cross section provided so as to protrude.

  In addition, a recess 7c2 is provided in the ventilation piece 7c provided on the lower side of FIG. 2 among the pair of ventilation pieces 7b and 7c of the ventilation member 7. A noncombustible volume expansion material 18 that expands due to heat is fitted and locked in the recess 7c2. Moreover, the nonflammable volume expansion material 18 is fixed also to the upper surface of the water return piece 6b provided in the upper side of the water return member 6 in FIG.

  The nonflammable volume expansion material 18 is an expandable graphite-based flameproof / smokeproof seal material, and has a property of starting to expand at a passing hot air temperature of about 180 ° C. and expanding ten times. As the noncombustible volume expansion material 18, for example, “Inzmex (trade name)” manufactured by Austrian Chemie Linz and various noncombustible volume expansion materials can be applied.

  Further, as shown in FIG. 6, the ventilation device A is locked by inserting a locking piece 19 a serving as one end into a U-shaped groove of a folded portion 9 a formed at the upper end of the windbreak member 9, A locking member that protrudes upward and serves as the other end, and has a spring-like hooking portion 19b that is inserted from the lower side into the ventilation slit hole 7c1 of the ventilation piece 7c provided on the lower side of the ventilation member 7 and locked. Has 19. As shown in FIG. 8, the hooking portion 19b provided at the lower end portion of the locking member 19 is bent at a substantially right angle upward from the horizontal piece 19d as shown in FIG. A locking piece 19b1 is provided.

  A rafter 20 is disposed below the base plate 12, and the upper end of the base material 5 of the outer wall 3 is fixed to the rafter 20. The rafters 20 are formed with ventilation openings 20a at a predetermined pitch. A base material 21 is provided at a predetermined pitch on the outdoor side of the rafter 20 (on the left side in FIG. 1) and on the top of the base material 5 of the outer wall 3.

<Attachment procedure of ventilation device>
As a procedure for attaching the ventilation device A between the outer wall 3 of the building 1 and the windbreak member 9 provided by being taken out from the outer wall 3, as shown in FIG. 1 and FIG. The piece 6 a is fixed to the base material 5 and the rafter 20 of the outer wall 3 with screws 11. Next, as shown in FIGS. 3 and 4, the ventilation member 7 is inserted into the water return member 6, and the ventilation member is interposed between the water return piece 6 c below the water return member 6 and the positioning member 17. 7, the fixing pieces 7 a of the ventilation member 7 are fixed to the base material 5 and the rafter 20 of the outer wall 3 with screws 11. At this time, the incombustible volume expansion material 18 is fitted and locked in the recess 7c2 of the ventilation piece 7c on the lower side of the ventilation member 7. The incombustible volume expansion material 18 may be fixed to the recess 7c2 of the ventilation piece 7c via an adhesive, a double-sided tape 14, or the like.

  Next, a double-faced tape 14 is attached to the hanging piece 7b2 provided on the outdoor side (left side in FIG. 2) of the ventilation piece 7b on the upper side of the ventilation member 7, and the fixing piece 10a of the shielding member 10 is attached to the both sides. It fixes to this drooping piece 7b2 via the tape 14. An end portion on the outdoor side (left side in FIG. 2) of the ventilation piece 7b on the upper side of the ventilation member 7 and an end portion where the fixing piece 10a of the shielding member 10 is provided have a J-shaped cross section that can be fitted to each other. Is formed. At this time, a sealing member 16 having elasticity is stuck on the surface of the fixing piece 10a of the shielding member 10 on the outdoor side (left side in FIG. 2) via a double-sided tape 14.

  Next, as shown in FIGS. 5 and 6, the locking piece 19 a composed of the upper end portion of the locking member 19 is inserted into the U-shaped gap of the folded portion 9 a provided at the upper end portion of the windbreak member 9, The step portion 19b provided in the intermediate portion of the locking member 19 is fitted into the step portion 9b provided in the intermediate portion of the windbreak member 9, and the blast member 9 and the locking member 19 are detachably locked. The Then, as shown in FIG. 6 (b), the hook portion 19b provided at the lower end portion of the windbreak member 9 is inserted into the slit hole 7c1 from the lower side of the slit hole 7c1 of the lower ventilation piece 7c of the ventilation member 7. Plug in. Then, as shown in FIG. 6C, after the locking piece 19b1 of the hook portion 19b is elastically deformed and inserted into the slit hole 7c1, the locking piece 19b1 is restored and the locking piece 19b1 is detachably locked to the ventilation piece 7c on the lower side of the ventilation member 7.

  Next, as shown in FIG.1 and FIG.2, in the lower surface corner | angular part of the outdoor side (left side of FIG. 1) of the base material 13 provided in the lower part of the field board 12 at the eaves 2 side further than the base material 21, In a state where the step portion 19c of the locking member 19 and the step portion 9b of the wind breaking member 9 are overlapped, they are fixed to the base material 13 with screws 11 from below. As shown in FIG. 5, screw holes 19c1 and 9b1 are provided in the step portion 19c of the locking member 19 and the step portion 9b of the windbreak member 9, respectively, and a screw 11 is inserted through the screw holes 19c1 and 9b1 to form a base. Fix to material 13. At this time, the windbreak member 9 is pressed against the sealing member 16 fixed to the fixed piece 10a of the shielding member 10, and the airtightness and watertightness between the windbreak member 9 and the shielding member 10 are maintained.

  As shown in FIG. 1, the ventilation 15 between the outdoor and indoor spaces in the ventilation device A attached between the outer wall 3 of the building 1 and the windbreak member 9 taken out from the outer wall 3 is shown in FIGS. As shown by the arrow 2, the slit 7c1 of the ventilation piece 7c on the lower side of the ventilation member 7 passes through the gap between the windbreak member 9 and the lower water return piece 6c on the lower side of the water return member 6 from outside. Passing through the gap between the shielding piece 10b of the shielding member 10 and the fixing piece 7a of the ventilation member 7, passing through the slit hole 7b1 of the ventilation piece 7b on the upper side of the ventilation member 7, and further passing through the water return member 6 It passes through the gap between the water return piece 6b and the windbreak member 9, and further passes through the gap between the base materials 21, and passes through the opening 20a of the rafter 20 to reach the indoor space.

  According to the above configuration, the ventilation resistance can be increased by performing ventilation 15 through the ventilation slit holes 7b1 and 7c1 formed in the pair of ventilation pieces 7b and 7c of the ventilation member 7, respectively. Can reduce the rainwater blowing into the water. Further, the ventilation 15 that directly passes between the ventilation slit holes 7b1 and 7c1 (between the slit holes) formed in the pair of ventilation pieces 7b and 7c of the ventilation member 7 is shielded by the shielding piece 10b of the shielding member 10. In addition, the ventilation resistance can be further increased by the water return piece 6b on the upper side of the water return member 6 provided outside the slit hole 7b1, and the blowing of rainwater into the building 1 can be further reduced.

  Further, the building 1 is constituted by the shielding piece 10b of the shielding member 10 covering the slit holes 7b1 and 7c1 for ventilation formed in the pair of ventilation pieces 7b and 7c of the ventilation member 7 and the water return piece 6b on the upper side of the water return member 6, respectively. It can make it difficult for hot air to enter inside. In this way, when considering the fire resistance of the back of the eaves, the eaves ceiling materials such as fiber reinforced cement boards and ceramic siding boards that are generally excellent in fire and heat insulation are omitted, and the eaves having fire resistance only with the metal ventilation device A The back can be configured. This facilitates the procurement of members, reduces the on-site processing setup due to the difference in materials, and facilitates the processing.

  Further, after fixing the water return member 6 to the base material 5 of the outer wall 3, the ventilation member 7 is fitted into the water return member 6 and fixed to the base material 5 of the outer wall 3, and the shielding member 10 is fixed to the ventilation member. By attaching to 7, a stable air passage can be easily formed.

  Further, the structure in which the ventilation member 7 is fitted inside the water return member 6 can be installed in a portion having a relatively small height dimension. In addition, the protruding width of the ventilation member 7 can be set as the protruding dimension of the eaves 2, and the protruding dimension of the eaves 2 can be relatively reduced, so that the heat receiving area of the back of the eave can be reduced in the event of a fire.

  Further, the positioning member 17 provided on the fixed piece 6 a of the water return member 6 can position the ventilation member 7 fitted inside the water return member 6, and the ventilation member 7 is fitted inside the water return member 6. The assemblability when doing so is improved.

  Further, as shown in FIG. 9 (a), the non-combustible volume expansion material 18 that is expanded by heat is provided in the recess 7c2 provided in the ventilation piece 7c provided on the lower side of the ventilation member 7. The non-combustible volume expansion material 18 is thermally expanded by such a temperature rise, and the inside of the ventilation member 7 provided with the slit holes 7b1 and 7c1 for ventilation is closed to block the spread of fire, thereby improving the fire prevention performance. As shown in FIG. 9 (a), the non-combustible volume expansion material 18 adhered to the upper surface of the water return piece 6b on the upper side of the water return member 6 is thermally expanded due to a temperature rise such as a fire and the water return member 6 is expanded. Blocks the spread of fire by closing the ventilation space between the upper part of the upper water return piece 6b and the lower surface of the base plate 12 and the ventilation space formed by the gaps between the base materials 21 arranged at a predetermined pitch. Fireproof performance can be improved.

  Further, since the windbreak member 9 and the ventilation member 7 are locked by the locking member 19, the wooden base material 13 to which the windbreak member 9 is fixed spreads and disappears as shown in FIG. 9B. Even in this case, the breakage member 9 can be prevented from falling.

  As an application example of the present invention, the present invention can be applied to a ventilation device provided between an eaves of a building and an outer wall.

A ... Ventilation device 1 ... Building 2 ... Eaves 3 ... Outer wall (outer wall side wall surface)
3a ... exterior material 5 ... base material 6 ... water return member 6a ... fixed piece 6b ... water return piece (upper piece)
6c ... water return piece (lower piece)
7 ... Ventilation member 7a ... Fixed pieces 7b and 7c ... Ventilation pieces
7b1, 7c1… slit holes
7b2… Drooping piece
7c2 ... concave part 8 ... field plate 9 ... windbreak member (vertical plate)
9a ... turn-up part 9b ... step part
9b1… Screw hole
10 Shielding member
10a: Fixed piece
10b ... shielding piece
11 ... screw
12 ... Field plate
13… Base material
14… Double-sided tape
15 Ventilation
16… Seal member
17… Positioning member
18… Noncombustible volume expansion material
19… Locking member
19a ... locking piece (one end)
19b ... Hook (other end)
19b1… locking piece
19c ... Step
19c1… Screw hole
19d… Horizontal piece
20… rafters
20a ... opening
21… Base material
22… Roofing material

Claims (4)

A ventilation device provided between an outer wall side wall surface of a building and a vertical plate provided separately from the outer wall side wall surface,
A ventilation member in which a fixed piece fixed to the outer wall side wall surface and a pair of ventilation pieces connected to the upper and lower sides of the fixed piece and each formed with a slit hole for ventilation are formed in a U-shaped cross section; ,
Insulating the upper piece that can cover the upper slit hole of the ventilation member from above, the lower ventilation piece of the ventilation member and the finish of the upper end of the exterior material provided on the outer wall side wall surface side A water return member formed in a U-shaped cross section having a lower piece that can be formed;
A shielding member that is inserted between the ventilation pieces of the ventilation member and can cover the lower slit hole of the ventilation member;
Have
The outside air and the indoor space are separated from the lower slit hole of the ventilation member through the upper slit hole of the ventilation member through the gap between the fixing piece of the ventilation member and the shielding member, and the upper piece of the water return member. A venting device, wherein aeration is performed through a gap with the vertical plate.   The ventilation device according to claim 1, wherein the ventilation member is fitted into the water return member and is positioned by a positioning member provided on an inner wall surface of the water return member.   The ventilation device according to claim 1 or 2, wherein a recess is provided in a ventilation piece below the ventilation member, and a noncombustible volume expansion material that expands by heat is provided in the recess.   4. One end part is latched by the said vertical board, and the other end part has a latching member inserted and latched from the lower side to the slit hole of the said ventilation member below, The 1-3 characterized by the above-mentioned. The ventilator according to any one of the above.

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