JP6116808B2 - Building outer wall structure - Google Patents

Description

  The present invention relates to an outer wall structure of a building in which a base drainer is provided at a lower end portion of an outer wall panel.

  In a building such as a house, a draining member is attached to the lower end of the outer wall. For example, in a building where the outer wall surface material that forms the outer wall surface is fixed to a wall base such as a base or a base material, the draining member is in a state in which the upper end portion enters between the outer wall surface material and the wall base There is a configuration that is fixed to the outer wall surface material and the base (for example, Patent Document 1). In this configuration, the draining member extends downward from the indoor side position of the outer wall surface material.

JP 2012-21356 A

  However, in a configuration in which the draining member is inserted between the outer wall surface material and the wall base, it is necessary to attach the draining member to the outer wall surface material or the wall base before attaching the outer wall surface material to the wall base. After attaching the wall material to the wall base, it is impossible to retrofit the draining member to the outer wall. For this reason, for example, when the draining member is deformed or damaged, it is necessary to remove the outer wall surface material from the wall base before removing the draining member in order to replace the draining member, and the work load when replacing the draining member is large. turn into.

  The present invention provides an outer wall structure of a building that can facilitate attachment / detachment of a draining member to / from an outer wall, and that can easily align an outer wall surface material with respect to a base frame by using a foundation drainer. This is the main purpose.

  Hereinafter, means and the like effective for solving the above-described problems will be described while showing functions and effects as necessary.

  The outer wall structure of the building of the first invention is an outer wall structure of a building in which a plurality of outer wall panels are provided side by side and a foundation drainer is provided so as to extend along the lower end of each outer wall panel. The outer wall panel includes a base frame attached to the building frame and an outer wall surface member attached to the outdoor side of the base frame, and the foundation drainer is an attachment member attached to the base frame. And a draining member attached to the attachment member, and the attachment member has an extension portion extending toward the outdoor side from the base frame, and the extension The upper surface of the part is opposed to the lower end surface of the outer wall surface material.

  According to the first aspect of the present invention, in the drainage of the base, it is possible to attach the draining member to the attachment member after attaching the attachment member and the outer wall surface material to the base frame. For this reason, after an outer wall panel is attached to a building frame, it becomes possible to adjust the attachment position of the draining member to the outer wall panel in the vertical direction. In addition, since the upper surface of the extending portion of the mounting member faces the lower end surface of the outer wall surface material, when the outer wall is constructed, the mounting member is attached to the base frame, and the outer wall surface material is applied to the extending portion of the mounting member. By making contact, the vertical alignment of the outer wall surface material with respect to the base frame can be performed.

  As described above, the attachment and detachment of the draining member to the outer wall can be facilitated, and the positioning of the outer wall surface material with respect to the base frame can be easily performed by using the foundation draining.

  In the second invention, the attachment member has a facing portion that faces the outdoor surface of the outer wall surface material by extending upward from the extending portion.

  According to the second invention, the movement of the outer wall surface material to the outdoor side can be restricted by the facing portion of the mounting member. In this case, inserting the lower end portion of the outer wall surface material between the base frame and the facing portion of the mounting member temporarily fixes the outer wall surface material to the base frame, so it is not pressed by hand. However, the position of the lower end portion of the outer wall surface material can be prevented from shifting. Thereby, the operation | work which attaches an outer wall surface material to a base frame with a bis | screw etc. can be facilitated.

  In the third invention, the draining member is provided so as to extend along the lower end portion in a state of covering the lower end portion of the outer wall surface material from the outdoor side.

  According to the third invention, since the draining member can cover the lower end portion of the outer wall surface material from the outdoor side, the appearance of the building is deteriorated by exposing the lower end surface of the outer wall surface material to the outdoor side. Can be avoided.

  Moreover, in the some outer wall panel arrange | positioned side by side, it is assumed that the height position of the lower end of each outer wall surface material is not the same. On the other hand, the draining member can cover and cover not only the lower end surface of the outer wall surface material but also the lower ends of the adjacent outer wall surface materials. In this case, since the unevenness of the height position of the lower end of the outer wall surface material can be covered by the parting member, it can be avoided that the appearance of the building is deteriorated due to the unevenness of the lower end of the outer wall surface material.

  In a fourth aspect of the invention, the attachment members are respectively attached to the base frames of the plurality of outer wall panels, and the draining members are attached to the outer wall panels adjacent to each other. It is attached to the member.

  According to the fourth invention, since the draining member is spanned between adjacent outer wall panels, even if the height positions of the lower ends of the respective outer wall surface materials of the outer wall panels are uneven, the lower ends are collectively covered. Can be hidden. Thereby, it can avoid that the appearance of a building falls because the height position of the lower end of an outer wall surface material is uneven.

  In addition, in the configuration in which the outer wall surface material is aligned with the base frame using the mounting member, the unevenness in the height position of the lower end of the outer wall material is considered to be caused by the uneven mounting height position of the mounting member. . Therefore, it is preferable that the mounting position of the draining member with respect to the mounting member is configured to be displaceable in the vertical direction. Thereby, even if the attachment height position of the attachment member is not uniform, the parting member can be arranged linearly by adjusting the attachment position of the parting member with respect to each attachment member.

  The fifth invention is applied to a unit building constructed by a plurality of building units having columns and beams, and the outer wall panel is attached to each of the adjacent building units side by side, and the attachment member is The adjoining building unit is attached to each base frame of the outer wall panel, and the draining member is attached to each attaching member of the building unit in a state of being spanned over the adjacent building unit. ing.

  According to the fifth invention, since the draining member is spanned between adjacent building units, even if the height positions of the lower ends of the outer wall surfaces of the building units are uneven, the lower ends are collectively covered. It is possible to hide. Thereby, it can avoid that the appearance of a building falls because the height position of the lower end of an outer wall surface material is uneven for every building unit.

  In a sixth aspect of the invention, the attachment member has an entry part that extends upward from the extension part so as to enter between the base frame and the outer wall surface material. The portion is fixed to the base frame between the base frame and the outer wall surface material.

  According to the sixth invention, since the entering portion of the mounting member is fixed to the base frame, the fixing portion of the mounting member with respect to the base frame can be covered from the outdoor side by the outer wall surface material.

  In a seventh aspect of the invention, the attachment member has a protrusion that protrudes from the entry portion toward the outdoor side, and the outer wall surface material is in contact with the protrusion so that the attachment member can It is separated to the outdoor side.

  According to the seventh invention, since the gap is ensured between the entry portion and the outer wall surface material by the protrusion, for example, when the screw is screwed to the entry portion and the base frame from the outdoor side, from the entry portion It can be avoided that the outer wall surface material is pressed against the screw head protruding toward the outdoor side. Here, the protruding dimensions of the screw heads are easily different for each screw, and in the configuration in which the outer wall surface material is pressed against the screw head, the separation distance between the outer wall surface material and the base frame is not constant, and The projecting dimension of each of the outer wall surfaces is different, and a step is generated on the outdoor surface (outer wall surface) of the outer wall. On the other hand, in this structure, it can avoid that a level | step difference arises in the outdoor surface of an outer wall by setting the separation distance of an outer wall surface material and a base frame to a predetermined distance by a projection part.

  In addition, it is preferable that the clearance gap between the base frame and outer wall surface material ensured by the projection part is made into the ventilation layer in an outer wall. According to this configuration, since the ventilation layer is formed on the outdoor side of the foundation frame, the ventilation layer is not vertically partitioned by the horizontal frame material of the foundation frame.

  In an eighth aspect of the invention, the base frame has a horizontal frame member extending along a lower end portion of the outer wall surface member, and the attachment member extends from the entry portion toward the indoor side and It has a hook part hooked on at least one of the upper end and the lower end of the horizontal frame member.

  According to the eighth aspect, the hooking portion of the mounting member is hooked on the base frame, so that the vertical positioning of the mounting member with respect to the base frame can be performed. Thereby, it can avoid that the attachment position of an attachment member shifts up and down because the attachment position of an attachment member shifts up and down.

  In a ninth aspect of the invention, the draining member has a wiring support portion that supports electrical wiring on the indoor side of the draining member.

  According to the ninth aspect, the electrical wiring can be laid by attaching the draining member to the attachment member. For this reason, in the configuration in which the draining member can be retrofitted to the outer wall panel attached to the building frame, the laying operation of the electrical wiring can be facilitated.

The disassembled perspective view which shows a building unit and an outer wall panel. The longitudinal cross-sectional view of the surrounding drainage periphery in an outer wall. The figure which shows the structure of an outer wall panel and a base drainer. The figure for demonstrating the assembly procedure of an outer wall panel. The disassembled perspective view of another foundation drainer and an outer wall surface material. The longitudinal cross-sectional view of the surrounding drainage periphery in another outer wall. The longitudinal cross-sectional view of the surrounding drainage periphery in another outer wall.

  Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings. In this embodiment, the building to which the present invention is applied is a unit building constructed by connecting a plurality of building units. In the unit type building, the building unit is installed on the foundation, and the outer wall is attached to the building unit. First, the building unit will be described with reference to FIG. FIG. 1 is an exploded perspective view showing the building unit 20 and the outer wall panel 31, and FIG. 2 is a vertical cross-sectional view around the foundation draining 41 in the outer wall 30.

  As shown in FIG. 1, the building unit 20 includes columns 21 arranged at the four corners, a ceiling beam 22 connected to the upper end (upper end) of the column 21, and the lower end (lower end) of the column 21. The column 21, the ceiling beam 22 and the floor beam 23 form a rectangular parallelepiped skeleton (frame). The column 21 is made of a square tube-shaped square steel. Further, the ceiling beam 22 and the floor beam 23 are made of channel steel having a U-shaped cross section, and are arranged toward the inside of the unit so that the groove opening sides face each other.

  In the building unit 20, a plurality of small ceiling beams 25 are bridged at predetermined intervals between a pair of large ceiling beams 22 that extend along the long side portion (girder surface) and face each other. Similarly, a plurality of floor beams 26 are bridged at a predetermined interval between a pair of large floor beams 23 that extend along the long side portion and face each other. The ceiling beam 25 and the floor beam 26 extend in parallel to the ceiling beam 22 and the floor beam 23 on the short side (wife side) at the same interval. The ceiling beam 25 and the floor beam 26 are each made of lip groove steel. A ceiling member 28 is supported by the ceiling beam 25 and a floor member 29 is supported by the floor beam 26.

  The outer wall 30 (see FIG. 3) of the building includes an outer wall panel 31, and a plurality of the outer wall panels 31 are provided side by side on the side surface of the building unit 20. The outer wall panel 31 includes an outer wall surface material 32 that forms an outer wall surface, and a base frame 33 that supports the outer wall surface material 32. The outer wall surface material 32 is made of an exterior material such as a ceramic siding. The base frame 33 is formed in a rectangular frame shape as a whole. Each outer wall panel 31 is attached to the building unit 20 by fixing the base frame 33 to a building frame such as the ceiling beam 22 and the floor beam 23.

  The base frame 33 has a pair of vertical frame members 35 extending in the vertical direction, and a horizontal frame member 36 extending in the left-right direction between the vertical frame members 35. A plurality of horizontal frame members 36 are arranged in the vertical direction, and each horizontal frame member 36 connects a pair of vertical frame members 35. The vertical frame member 35 and the horizontal frame member 36 are formed of lightweight grooved steel having a U-shaped cross section, and the vertical frame member 35 is disposed with the groove opening facing inward. In this case, the adjacent outer wall panels 31 are connected to each other by fixing the webs of the vertical frame members 35 with screws or the like.

  Of the plurality of horizontal frame members 36, the lowermost horizontal frame member 36 a connects the lower ends of the pair of vertical frame members 35 with the groove opening facing downward, and is attached to the outdoor side surface of the floor girder 23. ing. The uppermost horizontal frame member 36 b connects the upper ends of the pair of vertical frame members 35 with the groove opening facing upward, and is attached to the outdoor side surface of the ceiling beam 22. The lowermost horizontal frame member 36 a extends along the lower end of the outer wall surface member 32, and the uppermost horizontal frame member 36 b extends along the upper end of the outer wall surface member 32.

  As shown in FIG. 2, in the outer wall 30, a heat insulating layer 37 is provided on the indoor side of the outer wall panel 31. The heat insulating layer 37 is formed of a fiber-based heat insulating material such as glass wool, and extends along the indoor side surface of the outer wall panel 31 between the ceiling beam 22 and the floor beam 23 for each building unit 20. The heat insulating layer 37 is disposed away from the outer wall surface material 32 on the indoor side, and the separated portion is a ventilation layer 38. The ventilation layer 38 extends in the vertical direction along the vertical frame material 35 of the base frame 33, and the horizontal frame material 36 disposed at an intermediate position in the vertical direction is above and below the horizontal frame material 36. A communication hole for allowing the ventilation layers 38 to communicate with each other is formed.

  A waterproof sheet 39 such as waterproof paper is provided on the outdoor side of the base frame 33. The waterproof sheet 39 extends along the base frame 33 so as to close the frame space of the base frame 33 from the outdoor side, and upper and lower ends thereof are respectively fixed to the horizontal frame members 36a and 36b. While the waterproof sheet 39 is in contact with the outdoor side surfaces of the horizontal frame member 36 and the vertical frame member 35, a gap is formed between the outer wall surface member 32 and the waterproof sheet 39. In this case, between the outer wall surface material 32 and the heat insulating layer 37, the ventilation layer 38 is partitioned by the waterproof sheet 39 into the indoor side ventilation layer 38 a and the outdoor side ventilation layer 38 b.

  In the outer wall panel 31, a foundation drainer 41 is attached to a horizontal frame member 36 a extending along the lower end of the outer wall member 32. Here, the configuration of the base drainer 41 will be described with reference to FIGS. 2 and 3. FIG. 3 is a diagram showing the configuration of the outer wall panel 31 and the foundation drainer 41, (a) shows a front view of the foundation drainer 41 and the outer wall surface material 32 as viewed from the outdoor side, and (b) shows the foundation drainer 41 and An exploded perspective view of the outer wall surface material 32 is shown.

  As shown in FIG. 2, the foundation drainer 41 includes a base member 42 as an attachment member attached to the horizontal frame member 36 a and a cover member 43 as a drainage member attached to the base member 42. The base member 42 and the cover member 43 are formed by bending a plate material made of a metal material such as aluminum. The base member 42 and the cover member 43 may be formed of a synthetic resin material.

  The base member 42 is formed in a substantially U-shaped longitudinal section, and is provided in a state where a groove portion opened upward extends along the horizontal frame member 36a (see FIG. 3). The base member 42 includes a fixing portion 45 fixed to the horizontal frame member 36 a, an extending portion 46 extending from the fixing portion 45 toward the outdoor side, and a support portion 47 that supports the cover member 43. Yes.

  The lower end portion of the outer wall surface material 32 enters the groove portion of the base member 42 from above. In this case, the fixing portion 45 is an intrusion portion that enters from the lower side between the outer wall surface material 32 and the lateral frame member 36a on the indoor side of the outer wall surface material 32, and the plate surface of the fixing portion 45 is the outer wall surface. Opposite the indoor side of the material 32. The fixing portion 45 extends along the outdoor side surface of the horizontal frame member 36a, and is fixed to the outdoor flange of the horizontal frame member 36a by screws 51. The screw 51 is screwed to the fixing portion 45 and the lateral frame member 36 a from the outdoor side, and the screw head portion 51 a exists between the fixing portion 45 and the outer wall surface material 32.

  On the outdoor side of the base frame 33, a waterproof sheet 39 is sandwiched between the fixing portion 45 and the horizontal frame member 36a. The base member 42 has a protruding portion 49 protruding from the fixed portion 45 toward the outdoor side above the extending portion 46, and the protruding portion 49 abuts on the indoor side surface of the outer wall surface material 32. An outdoor side air-permeable layer 38 b is secured between the outer wall surface material 32 and the waterproof sheet 39. In this case, the protrusion 49 functions as a spacer for separating the outer wall surface material 32 from the waterproof sheet 39. By the way, the protruding portion 49 is in a state of protruding from the fixed portion 45 to the outdoor side by bending the upper end of the plate portion forming the fixed portion 45 downward on the outdoor side, and the lower end portion of the curved portion Is in contact with the indoor side surface of the outer wall surface material 32.

  The protrusion 49 secures a gap between the outer wall surface material 32 and the fixing portion 45 in addition to the space between the outer wall surface material 32 and the waterproof sheet 39. 51a is stored. In this case, the separation distance between the outer wall surface material 32 and the fixing portion 45 (the protrusion dimension of the protrusion 49) is the same as or larger than the protrusion dimension of the screw head 51a from the fixing portion 45, The outer wall surface material 32 is not pressed against the screw head 51a.

  In the groove portion of the base member 42, the lower end of the outer wall surface material 32 is disposed on the extending portion 46, and the lower end surface of the outer wall surface material 32 and the upper surface of the extending portion 46 are in close proximity or in contact with each other. Are facing each other. The extending portion 46 extends from the outdoor side flange of the horizontal frame member 36 a toward the outdoor side, and the extending dimension is larger than the thickness dimension of the outer wall surface member 32.

  The support portion 47 of the base member 42 extends upward from the extending portion 46 on the outdoor side of the outer wall surface material 32, and the indoor side surface thereof faces the outdoor surface of the outer wall surface material 32. The separation distance between the support portion 47 and the projection portion 49 is larger than the thickness dimension of the outer wall surface material 32, but is slightly larger, so that the outer wall surface material 32 is separated from the horizontal frame material 36a. Movement to the side (outdoor side) is regulated by the support portion 47. In the base member 42, the support portion 47 corresponds to a facing portion that faces the outdoor surface of the outer wall surface material 32.

  The cover member 43 is provided so as to cover the lower end portion of the outer wall surface material 32 from the outdoor side, and extends along the lower end portion of the outer wall surface material 32. The cover member 43 covers the lower end portion (a part) of the outdoor surface of the outer wall surface material 32 and extends downward from the lower end portion, and is folded back from the lower end portion of the drainage portion 56 to the indoor side. Part 57. The upper part of the draining portion 56 is opposed to the outdoor surface of the outer wall surface material 32 with the support portion 47 of the base member 42 interposed therebetween, and covers the support portion 47 in addition to the lower portion of the outer wall surface of the outer wall surface material 32.

  The draining portion 56 is formed so as to bulge to the outdoor side below the intermediate portion when viewed in the vertical direction. The folded portion 57 extends obliquely upward on the indoor side from the draining portion 56, and its upper end portion reaches the indoor side with respect to the finished surface (outdoor side surface) of the outer wall surface material 32. In this case, for example, even if rainwater adhering to the finished surface of the outer wall surface material 32 falls downward from the lower end of the outer wall surface material 32, the rainwater is received by the folded portion 57, so that it is directly below the connection portions 61 and 62. It can suppress falling.

  Further, a drain hole 58 is formed in the folded portion 57 so as to penetrate the folded portion 57, and the drain hole 58 is located on the outdoor side with respect to the support portion 47 of the base member 42. It is arranged near 56. In this case, the rainwater received by the folded portion 57 flows down from the drainage hole 58 on the outdoor side of the foundation. Thereby, it can suppress that rainwater collects on the upper end surface of a foundation.

  Electric wiring 59 such as a power cable and a signal line is installed on the upper surface of the folded portion 57. In this case, the space on the indoor side of the draining section 56 and the space above the folding section 57 is a wiring space, and the electrical wiring 59 is supported by the folding section 57 in a state of extending along the draining section 56. Become. Further, since the free end side of the folded portion 57 is higher than the base end side, the electric wiring 59 is simply placed on the upper surface of the folded portion 57 so that the position is held by the folded portion 57. It has become. In this case, the folded portion 57 corresponds to a wiring support portion that supports the electrical wiring 59.

  The cover member 43 is detachably attached to the base member 42. The base member 42 is provided with the first connection portion 61, and the cover member 43 is provided with the second connection portion 62. The first connection portion 61 and the second connection portion 62 are assembled together. By being in a state, they are connected to each other, whereby the cover member 43 is attached to the base member 42. Moreover, the cover member 43 can be removed from the base member 42 by releasing the mounting state of the connecting portions 61 and 62.

  The second connection portion 62 of the cover member 43 has a pair of upper and lower mounting portions 62 a that protrude from the draining portion 56 toward the indoor side (the support portion 47 of the base member 42). Each mounting portion 62a extends in the left-right direction along the drainage portion 56 (see FIG. 3B), and a groove portion is formed by these mounting portions 62a. The upper mounting portion 62a has a shape in which an intermediate portion is bent upward in the protruding direction, and the lower mounting portion 62a is bent in a downward direction.

  The first connecting portion 61 of the base member 42 has a pair of upper and lower mounted portions 61 a protruding from the support portion 47 toward the outdoor side, and each mounted portion 61 a is horizontally aligned along the support portion 47. (See FIG. 3B). The first connecting portion 61 is in a state of entering the groove portion of the second connecting portion 62 from the indoor side, and the mounting portion 62a of the second connecting portion 62 is mounted on the mounted portion 61a of the first connecting portion 61. ing. In this case, the mounting portion 62a and the mounted portion 61a are relatively slidable in the horizontal direction, and the cover member 43 is attached to the base member 42 in the horizontal direction with respect to the base member 42. Slide movement to is possible.

  In addition, the maximum width dimension of the groove portion of the second connection portion 62 (maximum separation distance between the pair of mounting portions 62a) is set larger than the maximum vertical dimension of the pair of mounted portions 61a of the first connection portion 61. The first connecting portion 61 can move in the vertical direction within the groove portion of the second connecting portion 62 while maintaining the mounting state of the portion 62a and the mounted portion 61a. That is, some play (gap) is provided between the first connection portion 61 and the second connection portion 62, and thereby the base member 42 is attached to the base member 42 with the cover member 43 attached thereto. It is possible to move a little in the vertical direction.

  The cover member 43 has a cover portion 64 that covers the connection portions of the connection portions 61 and 62 from above. The cover portion 64 protrudes from the upper end of the draining portion 56 toward the indoor side (base member 42 side) above the second connection portion 62, and the tip thereof is the first connection portion 61 and the support portion 47 of the base member 42. Is located above.

  As shown in FIG. 3A, the base member 42 is provided for each outer wall panel 31. In this case, the base members 42 are arranged side by side at a predetermined interval in the entire outer wall 30. The cover member 43 is attached to the plurality of base members 42, and thereby extends along the lower end of the outer wall 30. In this case, the cover member 43 is in a state of straddling the docking line DL that is a boundary portion between the building units 20 and the module line ML that is a boundary portion between the outer wall panels 31 (outer wall surface materials 32). In other words, the cover member 43 is provided so as to be bridged between adjacent building units 20 and is also provided so as to be bridged between adjacent outer wall panels 31.

  Here, in the outer wall 30, the lower end of the some outer wall surface material 32 may become uneven. For example, in one building unit 20, the height positions of the lower ends of adjacent outer wall surface materials 32 are different, or even if the lower end of each outer wall surface material 32 of one building unit 20 is aligned, the building unit 20 It is assumed that the height position of the lower end of the outer wall surface material 32 is different. When the lower end of the outer wall surface material 32 is uneven, it is assumed that the height position of the base member 42 for each outer wall panel 31 is also uneven. However, as described above, the attachment position of the cover member 43 is Since it can adjust to the up-down direction with respect to the base member 42, the cover member 43 of the state attached to each base member 42 can be extended straightly in a horizontal direction. Therefore, the unevenness of the outer wall panel 31 can be covered by the cover member 43.

  Next, the construction procedure of the outer wall 30 will be described with reference to FIGS. FIG. 4 is a view for explaining the procedure for assembling the outer wall panel 31. In addition, illustration of the waterproof sheet 39 is abbreviate | omitted in FIG.4 (b).

  The outer wall panel 31 is manufactured and attached to the building unit 20 in a factory such as a building unit manufacturing factory. First, the base frame 33 is formed by the plurality of vertical frame members 35 and the plurality of horizontal frame members 36. Then, with the base frame 33 lying on the work table, the waterproof sheet 39 is attached to the base frame 33 so as to close the frame opening of the base frame 33 from above. Thereafter, as shown in FIG. 4A, the base member 42 is fixed to the horizontal frame member 36a of the base frame 33 from above the waterproof sheet 39 using screws 51, and as shown in FIG. A plurality of frames 33 are arranged side by side, and the base frames 33 are connected by the vertical frame members 35.

  After the plurality of base frames 33 are connected, the outer wall surface material 32 is attached to each base frame 33. First, as shown in FIG. 4C, the lower end surface of the outer wall surface material 32 is brought into contact with the extending portion 46 of the base member 42 with respect to one base frame 33. Thus, the vertical positioning of the outer wall surface material 32 with respect to the horizontal frame material 36a can be performed without marking the base frame 33. Then, screws (not shown) are screwed from the outdoor side to the outer wall surface material 32, the fixing portion 45 of the base member 42, and the outdoor side flange of the base frame 33, thereby fixing the outer wall surface material 32 to the base frame 33. .

  In this case, the outer wall surface material 32 is pressed against the base frame 33, but the base frame 33 (waterproof sheet 39) is brought into contact with the projection 49 of the base member 42 against the outer wall surface material 32. The outer side air-permeable layer 38b can be secured between the outer wall surface member 32 and the outer wall surface member 32.

  And as shown in FIG.4 (d), the outer wall surface material 32 is attached also to the other base frame 33. FIG. Here, the lower ends of the base frames 33 are arranged on the same straight line, and the base members 42 are arranged on the same straight line accordingly. In this case, since each outer wall surface material 32 is vertically aligned with the base frame 33 by each base member 42, the lower end portions of the outer wall surface materials 32 are also arranged on the same straight line. . That is, the lower end of each outer wall surface material 32 is in a state of being aligned.

  As described above, after the production and connection of the plurality of outer wall panels 31, the outer wall panels 31 are attached to the building unit 20. Then, the building unit 20 is transported to the construction site together with the outer wall panel 31 and installed at the construction site. Thereafter, as illustrated in FIG. 3A, the cover member 43 is attached to the plurality of building units 20 arranged side by side on the foundation so as to be bridged over the building units 20. In this case, the cover member 43 is attached to each of the base members 42 of each building unit 20.

  Incidentally, the base member 42 is attached to the horizontal frame member 36a before the outer wall surface material 32, and is used for alignment of the outer wall surface material 32 with respect to the base frame 33. Therefore, the base member 42 is a member constituting the outer wall panel 31. I can say that. Even if the base member 42 is a member constituting the outer wall panel 31, the cover member 43 can be attached to the base member 42.

  According to the embodiment described in detail above, the following excellent effects can be obtained.

  In the base drainer 41, the cover member 43 can be attached to the base member 42 after the base member 42 and the outer wall surface material 32 are attached to the base frame 33 (horizontal frame member 36 a). For this reason, even after the outer wall panel 31 is attached to the building frame such as the floor beam 23, the cover member 43 can be retrofitted in accordance with the attached state of the outer wall panel 31. In addition, since the upper surface of the extending portion 46 of the base member 42 faces the lower end surface of the outer wall surface material 32, the base member 42 is attached to the base frame 33 when the outer wall 30 is constructed, and is inserted into the groove portion of the base member 42. With the end portion of the outer wall surface material 32 in the longitudinal direction inserted, the outer wall surface material 32 is brought into contact with the extending portion 46 of the base member 42, so that the vertical direction of the outer wall surface material 32 with respect to the base frame 33 is increased. Alignment can be performed.

  As described above, it is possible to easily attach and detach the cover member 43 as a draining member with respect to the outer wall 30, and furthermore, it is possible to easily align the base frame 33 by using the base member 42 of the base draining 41. .

  Since the lower end portion of the outer wall surface material 32 is inserted between the outdoor side flange of the horizontal frame material 36a and the support portion 47 of the base member 42, the outer wall surface material 32 is separated from the horizontal frame material 36a. Movement to the side away from the outdoor side can be restricted by the support portion 47. In this case, since the lower end portion of the outer wall surface material 32 is inserted into the indoor side (lateral frame material 36a side) of the support portion 47, the outer wall surface material 32 is temporarily fixed to the horizontal frame material 36a. Even if it is not held down by hand or the like, it is possible to prevent the position of the lower end portion of the outer wall surface material 32 from shifting. Thereby, the operation | work which attaches the outer wall surface material 32 to the base frame 33 with a screw | thread etc. can be facilitated.

  Since the lower end portion of the outer wall surface material 32 is covered and hidden from the outdoor side by the draining portion 56 of the cover member 43, the appearance of the building is deteriorated by exposing the lower end portion of the outer wall surface material 32 to the outdoor side. Can be avoided.

  In this case, since both the lower end part of the outer wall surface material 32 and the base member 42 are covered and hidden from the outdoor side by the cover member 43, the base member 42 can be prevented from being exposed to the outdoor side. Therefore, it is possible to avoid the appearance of the outer wall 30 from being impaired by the support portion 47 in the configuration in which the movement of the outer wall surface material 32 in the direction away from the base frame 33 can be restricted by the support portion 47 of the base member 42.

  Since the cover member 43 is bridged between the adjacent outer wall panels 31, it is possible to avoid the cover member 43 from being discontinuous for each outer wall panel 31. That is, it can suppress that the attachment height position of the cover member 43 differs for every outer wall panel 31. FIG. In this case, even if the height positions of the lower ends of the respective outer wall surfaces 32 of the adjacent outer wall panels 31 are not uniform, the lower ends can be collectively covered by the cover member 43. Thereby, it can avoid that the appearance of a building falls because the height position of the lower end of the outer wall surface material 32 is uneven.

  Since the cover member 43 is bridged between the adjacent building units 20, it can be avoided that the mounting height position of the cover member 43 is different for each building unit 20. Therefore, it can be avoided that the appearance of the outer wall 30 is impaired due to the cover member 43 being discontinuous. In this case, even if the height positions of the lower ends of the respective outer wall surface materials 32 of the adjacent building units 20 are not uniform, the lower ends can be collectively covered by the cover member 43. Thereby, it can avoid that the appearance of a building falls because the height position of the lower end of the outer wall surface material 32 is uneven for every building unit 20. FIG.

  Since the fixing portion 45 of the base member 42 is in a state of being inserted between the indoor side surface of the outer wall surface material 32 and the outdoor side flange of the lateral frame material 36a, the fixing portion of the base member 42 with respect to the base frame 33 is outside. The wall surface material 32 can be covered from the outdoor side.

  Moreover, in the base member 42, the fixing portion 45 extends upward from the extension portion 46, and therefore, unlike the case where the fixing portion 45 extends downward from the extension portion 46, the fixing portion 45. There is no need to dispose the extending portion 46 upward from the lower end of the horizontal frame member 36a by the height dimension. In this case, since the separation distance in which the lower end of the outer wall surface material 32 is spaced upward from the lower end of the horizontal frame member 36a can be reduced, the horizontal frame is compared with the case where the extending portion 46 extends downward. A large overlapping width in the vertical direction between the material 36a and the outer wall surface material 32 can be secured. Thereby, it becomes possible to attach the outer wall surface material 32 firmly with respect to the horizontal frame material 36a.

  Since a gap is secured between the fixed portion 45 and the outer wall surface material 32 by the protruding portion 49 protruding from the fixed portion 45 in the base member 42, the outer wall surface material 32 is connected to the outer wall surface material 32 and the fixed portion 45. It is possible to avoid being pressed against the screw head 51a between the two. In this case, unlike the case where the protrusion 49 is not provided, that is, when the outer wall surface material 32 is pressed against the screw head 51a, the outer wall surface material 32 and the fixing portion 45 (the horizontal frame material). Since the separation distance from 36a) is constant for each outer wall surface material 32, it is possible to suppress the occurrence of a step on the finished surface of the outer wall 30.

  Since the outdoor-side ventilation layer 38b is formed between the base frame 33 and the outer wall surface material 32, the indoor-side ventilation layers 38a on the upper side and the lower side of the horizontal frame member 36 are temporarily disconnected. Even in this case, the ventilation in the outer wall 30 can be performed by the indoor side ventilation layer 38a. In addition, in the configuration in which the outdoor-side air-permeable layer 38b is secured by the protrusions 49 of the base member 42 (the configuration in which the outer wall surface material 32 is separated from the base frame 33), a plurality of base members 42 are provided at predetermined intervals. Therefore, the outdoor side air-permeable layer 38b is opened downward through the space between the base members 42. Therefore, it is possible to realize a configuration in which the inside of the outer wall 30 can be ventilated by the outdoor-side vent layer 38b without forming a vent hole or the like in the base member 42.

  In the cover member 43, since the electrical wiring 59 is laid on the folded portion 57, the electrical wiring 59 can be covered from the outdoor side by the draining portion 56. Thereby, it can avoid that the appearance of the outer wall 30 is impaired by exposing the electrical wiring 59 to the outdoor side. In addition, the work of laying the electrical wiring 59 can be an easy work of placing it on the folded portion 57.

[Other Embodiments]
The present invention is not limited to the description of the above embodiment, and may be implemented as follows, for example.

  (1) In the connection portion between the cover member 43 and the base member 42, as shown in FIG. 5, the connection portions 61 and 62 may be provided so as to extend in the vertical direction. According to this configuration, the attachment position of the cover member 43 with respect to the base member 42 can be changed in the vertical direction by the second connection portion 62 slidingly moving in the vertical direction with respect to the first connection portion 61. Therefore, even if the height position of the base member 42 differs greatly for each outer wall panel 31, the cover member 43 can be extended straight in the horizontal direction. That is, even if the height positions of the lower end portions of the adjacent outer wall surface materials 32 are greatly different, the unevenness of the lower end portions can be covered by the cover member 43.

  In the cover member 43, since the cover part 64 is disposed above the second connection part 62 in the sliding direction (vertical direction) of the cover member 43, the cover part 64 is the first connection part 61 of the base member 42. The cover member 43 is prevented from sliding downward relative to the base member 42 by being hooked on the upper end of the base member 42.

  In the cover member 43 and the base member 42, one of the connection portions 61 and 62 may have a small vertical dimension. Even in this case, the connecting portions 61 and 62 can be relatively slid in the vertical direction.

  (2) In the above embodiment, the connecting portion where the base member 42 and the cover member 43 are connected is disposed at a position higher than the lower end of the outer wall surface material 32. You may arrange | position in the position and the downward position. For example, as shown in FIG. 6A, a support portion 47 as a facing portion of the base member 42 extends downward from the extending portion 46 and connects the base member 42 and the cover member 43. , 62 are arranged below the outer wall surface material 32. In this configuration, in the cover member 43, the second connection portion 62 is provided near the center of the drainage portion 56 in the vertical direction, and the drainage portion 56 protrudes upward from the second connection portion 62. For this reason, even if the 2nd connection part 62 is arrange | positioned below the outer wall surface material 32, the draining part 56 is the state which covered the lower end part of the outer wall surface material 32 from the outdoor side.

  In the cover member 43, the folded portion 57 reaches the indoor side from the indoor side surface of the outer wall surface material 32. In this case, for example, even if rainwater enters the indoor side of the outer wall surface material 32 through joints between the outer wall surface materials 32 and flows down along the indoor side surface of the outer wall surface material 32, the rainwater is turned back. Can be received. Then, rainwater or the like received by the folded portion 57 flows downward from the drain hole 58.

  Further, in the cover member 43, the draining portion 56 does not extend downward so as to bulge from the lower end to the outdoor side, but extends downward toward the bottom. The draining part 56 may extend downward so as to swell indoors.

  Further, as shown in FIG. 6B, the cover member 43 may be configured to be detachably attached to the extending portion 46 instead of the support portion 47 of the base member 42. In this configuration, a locking portion 71 is provided at the draining portion 56 of the cover member 43, and a locked portion 72 is provided at the extending portion 46 of the base member 42. The cover member 43 is attached to the base member 42 by engaging the portion 72.

  The locking portion 71 extends from the upper end portion of the draining portion 56 toward the indoor side, and the cover member 43 is installed below the outer wall surface material 32. In this case, the draining portion 56 does not cover the lower end portion of the outer wall surface material 32 from the outdoor side, and the lower end portion of the outer wall surface material 32 is exposed to the outdoor side. In this case, in the base member 42, the extended portion 46 and the locked portion 72 correspond to a support portion that supports the cover member 43. Further, the folded-back portion 57 may not be provided with the drain hole 58.

  In the base member 42, the distal end portion of the extending portion 46 is disposed on the indoor side with respect to the outdoor surface of the outer wall surface material 32. That is, the extension dimension of the extension part 46 from the fixed part 45 is made smaller than the thickness dimension of the outer wall surface material 32. Even in this case, since the upper surface of the extension portion 46 faces the lower end surface of the outer wall surface material 32, the outer wall surface material with respect to the base frame 33 is attached by the extension portion 46 when the outer wall surface material 32 is attached to the base frame 33. 32 can be aligned in the vertical direction.

  (3) The base member 42 may be provided with a hook portion that is hooked to the upper end or the lower end of the horizontal frame member 36a. For example, as shown in FIG. 6A, a hook 74 provided on the base member 42 is hooked on the upper end of the horizontal frame member 36a. In this configuration, the hook portion 74 extends from the upper end of the fixed portion 45 toward the indoor side and is hooked on the upper end of the horizontal frame member 36a, whereby the base member 42 moves downward relative to the horizontal frame member 36a. To be regulated. For this reason, when the outer wall panel 31 is manufactured, when the base member 42 is attached to the base frame 33, the hook portion 74 is hooked on the horizontal frame member 36a, so that the ink is removed from the base frame 33. Even if it does not perform, position alignment of the base member 42 with respect to the horizontal frame material 36a can be performed in an up-down direction.

  In the base member 42, the hook portion 74 is fixed to the web of the horizontal frame member 36a by screws 51. In this case, the screw head 51 a of the screw 51 exists on the side of the horizontal frame member 36 a, and does not exist between the horizontal frame member 36 a and the outer wall surface member 32. For this reason, the base member 42 does not have to be provided with the protruding portion 49 for separating the fixing portion 45 and the outer wall surface material 32.

  The waterproof sheet 39 may not be provided between the base frame 33 and the outer wall surface material 32.

  Moreover, as shown in FIG.6 (b), it is good also as a structure by which the hook part 74 provided in the base member 42 is hooked on the lower end of the horizontal frame material 36a. In this configuration, the fixed portion 45 extends from the extended portion 46 downward rather than upward, and the hook portion 74 extends from the lower end of the fixed portion 45 toward the indoor side. The hook portion 74 is hooked on the lower end of the horizontal frame member 36a, and thereby, the base member 42 is restricted from moving upward with respect to the horizontal frame member 36a. Incidentally, the base member 42 may be provided with both a hook portion 74 hooked to the lower end of the horizontal frame member 36a and a hook portion 74 hooked to the upper end.

  In the base member 42, the fixing portion 45 is not in a state of entering between the horizontal frame member 36 a and the outer wall surface member 32. In this case, the outer wall surface material 32 is in contact with the base frame 33, and the outdoor side ventilation layer 38 b between the outer wall surface material 32 and the base frame 33 is not formed. The fixing portion 45 is fixed to the outdoor side flange of the horizontal frame member 36 a by a screw 51 below the outer wall surface member 32. Note that the fixing portion 45 may be fixed to the horizontal frame member 36a with an adhesive or the like.

  (4) In the embodiment described above, the cover part 64 is provided on the cover member 43, but the cover part 64 may be provided on the base member 42. For example, the cover part 64 is configured to extend from the upper end of the support part 47 toward the outdoor side above the first connection part 61. Moreover, the cover part 64 does not need to be provided.

  (5) As long as the electrical wiring 59 is laid on the indoor side of the draining portion 56, the electrical wiring 59 may not be placed on the folded portion 57. For example, as illustrated in FIG. 7A, the cover member 43 is provided with a wiring holding portion 76 that holds the electrical wiring 59. In this configuration, the wiring holding portion 76 is provided on the indoor side surface of the drainage portion 56 in a state of projecting from the drainage portion 56 toward the indoor side, and extends along the drainage portion 56. Even in this configuration, since the electrical wiring 59 is disposed on the indoor side of the draining portion 56, the electrical wiring 59 can be covered from the outdoor side by the draining portion 56. The wiring holding unit 76 corresponds to a wiring support unit.

  In addition, as shown in FIG. 7B, the wiring holding portion 76 may be provided on the base member 42. In this configuration, in the base member 42, the support portion 47 extends downward from the extension portion 46, and the wiring holding portion 76 extends downward from the support portion 47. The wiring holding portion 76 is a groove-shaped member with the groove opening directed toward the draining portion 56, and has a size and shape that is covered by the draining portion 56. The electrical wiring 59 is stretched over the wiring holding portions 76 of the plurality of base members 42, and is thereby laid on the indoor side of the draining portion 56. Even in this configuration, since the electrical wiring 59 is disposed on the indoor side of the draining portion 56, the electrical wiring 59 can be covered from the outdoor side by the draining portion 56.

  Furthermore, in a configuration in which the electrical wiring 59 is laid on the indoor side of the draining portion 56, a drain hole 77 for drawing the electrical wiring 59 to the outdoor side may be provided in the draining portion 56. According to this configuration, since the electric wiring 59 is inserted into the drawing hole 77, the electric wiring 59 is supported by the drawing hole 77, and the electric wiring 59 is prevented from hanging from the wiring holding portion 76. it can.

  (6) In the above embodiment, the effective width dimension of the portion where the outer wall surface material 32 enters in the base member 42 (the separation distance between the support portion 47 and the protrusion 49) is made larger than the thickness dimension of the outer wall surface material 32. However, the effective width dimension may be the same as or smaller than the thickness dimension of the outer wall surface material 32. Even in this case, the base member 42 is elastically deformed, whereby the lower end portion of the outer wall surface material 32 can be inserted into the indoor side of the support portion 47.

  (7) In the above embodiment, the cover member 43 is attached to the base member 42 by the connecting portions 61 and 62. However, the cover member 43 is attached to the base member 42 by a fixing tool such as a screw or an adhesive. May be attached.

  (8) The base member 42 may be attached to the lower ends of the pair of vertical frame members 35 instead of the horizontal frame member 36 a of the base frame 33. In this case, even if the base frame 33 does not have the horizontal frame member 36 a, the base member 42 can be attached to the lower end of the base frame 33, and as a result, the cover member 43 extends along the lower end of the outer wall surface member 32. Can be attached to extend.

  (9) The building may not be a unit type building, but may be a building constructed by a steel frame construction method or a framed wall construction method. Even in this case, it is only necessary that the outer wall of the building is constructed so as to include a plurality of outer wall panels provided side by side, and a foundation drainer is provided so as to extend along the lower ends of the outer wall panels.

  DESCRIPTION OF SYMBOLS 20 ... Building unit, 22 ... The ceiling beam which comprises a building frame, 23 ... The floor beam which comprises a building frame, 30 ... Outer wall, 31 ... Outer wall panel, 32 ... Outer wall surface material, 33 ... Base frame, 41 ... Base drainage, 42 ... Base member as mounting member, 43 ... Cover member as draining member, 45 ... Fixing portion as entering portion, 46 ... Extension portion, 47 ... Supporting portion as opposed portion, 49 ... Projection portion, 57 ... Wiring Folding portion as a support portion, 59... Electric wiring, 74 .. hooking portion, 76... Wiring holding portion as a wiring support portion.

Claims (8)

Applied to unit buildings built by multiple building units with columns and beams,
A plurality of outer wall panels are provided side by side, and the outer wall structure of the building is provided with a foundation drainer so as to extend along the lower end of each outer wall panel,
The outer wall panel has a base frame attached to the building frame, and an outer wall material attached to the outdoor side of the base frame,
The foundation drainer has an attachment member attached to the base frame, and a drainage member attached to the attachment member and extending downward from the lower end of the outer wall surface material,
The mounting member has an extending portion that extends toward the outdoor side from the base frame, and an upper surface of the extending portion is opposed to a lower end surface of the outer wall surface material,
By connecting the connecting portions provided in the mounting member and the draining member, the draining member is attached to the mounting member ,
A plurality of the attachment members are attached to the base frame at a predetermined interval in the width direction of the outer wall surface material,
The draining member covers the lower end portion of the outer wall surface material from the outdoor side and is provided so as to extend downward from the outer wall surface material, and the folded back folded from the lower end portion of the drain wall portion to the indoor side. And
The folded portion extends obliquely upward from the lower end portion of the draining portion toward the indoor side, and the upper end portion thereof is located on the indoor side with respect to the indoor side surface of the outer wall surface material when viewed in the horizontal direction. ,
An exterior wall structure of a building, wherein a drain hole is formed in a lower base end portion of the folded portion . 2. The building outer wall structure according to claim 1, wherein the attachment member has a facing portion that faces the outdoor surface of the outer wall surface material by extending upward from the extending portion. The attachment members are respectively attached to the base frames of the plurality of outer wall panels,
The draining member is provided so as to extend along the lower end portion in a state where the lower end portion of the outer wall surface material is covered from the outdoor side, and in a state of being spanned between the adjacent outer wall panels, The outer wall structure of a building according to claim 1 or 2, wherein the outer wall structure is attached to an attachment member. The outer wall panel is attached to each of the adjacent building units side by side,
The attachment member is attached to each of the foundation frames of the outer wall panel in the adjacent building unit,
The draining member is provided so as to extend along the lower end portion in a state in which the lower end portion of the outer wall surface material is covered from the outdoor side, and spanned between the adjacent building units. The outer wall structure of a building according to any one of claims 1 to 3 , wherein the outer wall structure is attached to an attachment member. The mounting member has a entering portion that extends between the base frame and the outer wall surface material by extending upward from the extending portion,
The outer wall structure of a building according to any one of claims 1 to 4 , wherein the entry portion is fixed to the base frame between the base frame and the outer wall surface material. The mounting member has a protruding portion that protrudes from the entry portion toward the outdoor side,
The said outer wall surface material is the outer wall structure of the building of Claim 5 spaced apart from the said entrance part to the outdoor side by contact | abutting to the said projection part. The base frame has a horizontal frame material extending along a lower end portion of the outer wall surface material,
The outer wall structure of a building according to claim 5 or 6 , wherein the attachment member has a hook portion that extends toward the indoor side from the entry portion and is hooked on at least one of an upper end and a lower end of the horizontal frame member. . The outer wall structure of a building according to any one of claims 1 to 7 , wherein the draining member has a wiring support portion that supports electrical wiring on the indoor side of the draining member.

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