JP2012117302A - Unit building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a unit building capable of improving insulation and waterproof properties.SOLUTION: A unit building 10 comprises: a first insulation material 42 installed at an outdoor side of an inner wall panel 20; a first waterproof sheet 44 laid at the outdoor side of the first insulation material 42 in touch with the same; a second insulation material 48 installed at an indoor side of an outer wall panel 30; and a second waterproof sheet 46 laid at the indoor side of the second insulation material 48 in touch with the same. Insulation property of the unit building 10 is thus improved by both the first insulation material 42 and the second insulation material 48. Waterproof property of the unit building 10 can also be improved by restraining water from infiltrating into the indoor side of the unit building 10 because the first waterproof sheet 44 and the second waterproof sheet 46 are arranged between the first insulation material 42 and the second insulation material 48.

Description

  The present invention relates to a unit building in which a plurality of building units are assembled and constructed on site.

  The unit building of Patent Document 1 has a double wall structure with an outer wall panel sandwiching a ventilation layer, and this ventilation layer communicates with a space under the floor surrounded by the building foundation. As a result, ventilation is performed by supplying outdoor air from the space under the floor to the ventilation layer.

  The building of patent document 2 arrange | positions two building units at intervals up and down, forms an air flow path between an outer wall material and an inner wall material, and has a double structure for an outer wall material on the indoor side and the outdoor side. Air is circulated inside. Furthermore, a moisture-impermeable sealing material is provided on the indoor side of the upper and lower gaps of the building unit, and a moisture-impermeable waterproof material is provided on the outdoor side. Thereby, dehumidification is performed by flowing air between the outer wall material and the inner wall material.

JP 2000-192564 A JP 2000-303579 A

  However, in the case of the prior art disclosed in Patent Document 1 described above, since the waterproof means is not provided in the ventilation layer, rain may enter the indoor side through the ventilation layer. Further, in the case of the prior art disclosed in the above-mentioned Patent Document 2, since the waterproof means is not provided on the wall of the air flow passage, water penetrates into the indoor side when the moisture-impermeable waterproof material is torn. The waterproof performance was insufficient. Furthermore, in the structure of patent document 1 and patent document 2, there was only one layer of heat insulating material between the outer wall and the inner wall, and the heat insulating performance was insufficient.

  In view of the above facts, an object of the present invention is to obtain a unit building capable of improving heat insulation performance and waterproof performance.

  The unit building according to the invention of claim 1 is in contact with the first heat insulating material provided on the outdoor side of the inner wall attached to the beam and the outdoor side of the first heat insulating material having waterproofness or moisture resistance. A first waterproof material provided; attachment means for removably attaching an outer wall to the beam; a second heat insulating material provided on the indoor side of the outer wall; and the first heat insulating material having waterproofness or moisture resistance. And a second waterproof material provided in contact with the indoor side of the second heat insulating material.

  In the unit building according to the invention of claim 1, the first heat insulating material is provided between the inner wall and the first waterproof material, and the second heat insulating material is provided between the outer wall and the second waterproof material. The heat insulating material improves the heat insulating performance of the unit building. Furthermore, since the 1st heat insulating material and the 2nd heat insulating material function as a refractory material, heat transfer is suppressed and fire resistance performance can be improved. In addition, since there are multiple layers of waterproofing material of the first waterproofing material and the second waterproofing material between the first heat insulating material and the second heat insulating material, the ingress of water into the indoor side of the unit building is suppressed, and the waterproof performance Can be improved.

  In addition, by removing the outer wall with the attaching means, it is divided into the first heat insulating material on the inner wall side, the first waterproofing material, the second heat insulating material on the outer wall side, and the second waterproofing material. Compared with the case where a single layer of heat insulating material is provided, the thickness of the heat insulating material for maintenance is reduced, and maintenance work such as replacement of the heat insulating material is facilitated. Further, since the first waterproof material and the second waterproof material are exposed by removing the outer wall, these maintenance operations are facilitated. In addition, since the outer wall can be removed, the outer wall can be replaced with another outer wall after removing the outer wall, which is effective for reforming. And in the case of renovation, since the 1st heat insulating material is already attached to the inner wall side, an outer wall can be replaced | exchanged for the outer wall material without a heat insulating material, and it is effective also at parts reduction and cost reduction.

  In the unit building according to the second aspect of the present invention, an air passage through which air flows is formed between the first waterproof material and the second waterproof material.

  In the unit building according to the invention of claim 2, the air passage formed between the first waterproof material and the second waterproof material is an air layer, and heat transfer from the outdoor side to the indoor side is performed in this air layer. Since it is suppressed, the heat insulation performance of the unit building can be improved.

  In the unit building according to the invention of claim 3, the mounting means includes a mounting member provided on the outer wall, a guide member provided on a floor beam of the beams and guiding the mounting member to a mounting position, A floor beam side mounting means provided with a positioning member provided on the guide member and positioning the mounted member at the mounting position.

  In the unit building according to the invention of claim 3, the mounted member provided on the outer wall is guided to the mounting position by the guide member, and is positioned at the mounting position by the positioning member. As a result, the trouble of searching for the mounting position when the outer wall is mounted on the floor beam can be saved, so that the time for mounting the outer wall can be shortened.

  In a unit building according to a fourth aspect of the present invention, the attached member and the guide member have inclined surfaces, and the inclined surface of the attached member is guided in contact with the inclined surface of the guide member.

  In the unit building according to the fourth aspect of the invention, the mounted member is guided to the mounting position by sliding the inclined surface of the mounted member in contact with the inclined surface of the guide member. Become.

  In the unit building according to the invention of claim 5, the attachment means includes an overhang member provided on the outer wall and projecting toward the indoor side, and a fixing member for fixing the overhang member to a ceiling beam among the beams. The fitting member which fits with the vertical gutter provided in the outdoor side of the inner wall is provided in the overhang member.

  In the unit building according to the invention of claim 5, the outer wall is fixed to the beam by fixing the overhanging member to the ceiling beam by the fixing member. And the upper part of a vertical fence is fixed with respect to an overhang | projection member by fitting a fitting member in the upper part of the vertical fence provided in the outdoor side of the inner wall. Thus, since the upper part of the vertical hook is fixed by the fitting member, the installation state of the vertical hook can be stabilized.

  In the unit building according to the invention of claim 6, the fitting member is a joint for connecting the upper part of the downpile on the lower floor and the lower part of the downpipe on the upper floor.

  In the unit building according to the invention of claim 6, the position of each vertical gutter is fixed by connecting the upper part of the vertical gutter on the lower floor and the lower part of the vertical gutter on the upper floor by a joint. Water can be prevented from leaking between the fence and the downstairs.

  The unit building according to the invention of claim 7 is attached to one end of the outer wall on the girder side and one end of the outer wall on the wife side to constitute a part of the outer wall, and the corner outer wall is connected to the girder side wall. A corner attaching means for attaching to the outer wall on the side and the outer wall on the side of the wife, and the corner attaching means includes the fastening member fastened to the outer wall or the corner outer wall, and the outer wall or the corner outer wall. The fastening member is provided on a side where the fastening member is not fastened and has a guided portion formed with a notch guided by the fastening member.

  In the unit building according to the invention of claim 7, the corner outer wall is attached to one end of the outer wall on the girder side and one end of the outer wall on the wife side, so that the corner of the unit building is covered with the corner outer wall. Here, since the corner outer wall is attached by guiding the notch of the guided portion by the fastening member, the operation of covering the corner of the unit building with the corner outer wall is facilitated.

  The unit building according to the invention of claim 8 is provided with a covering member that covers the joint between the outer wall and the corner outer wall.

  In the unit building according to the eighth aspect of the invention, the joint between the outer wall and the corner outer wall is covered by the covering member, so that the intrusion of water from the joint into the unit building 10 can be suppressed.

  In the unit building according to the invention of claim 9, a vertical gutter provided on the outdoor side of the inner wall is concealed by the outer wall of the corner.

  In the unit building according to the invention of claim 9, since the downspout is concealed by the corner outer wall, the appearance of the unit building is not impaired by the downspout. Moreover, since the vertical gutter is exposed by removing the corner outer wall, the vertical gutter can be easily cleaned or replaced.

  As described above, the unit building according to the first aspect of the present invention has an excellent effect that the heat insulation performance and the waterproof performance can be improved.

  The unit building according to the second aspect of the present invention has an excellent effect that the heat insulation performance can be improved.

  According to the unit building according to the third aspect of the present invention, there is an excellent effect that the time for attaching the outer wall can be shortened.

  According to the unit building of the present invention as set forth in claim 4, there is an excellent effect that the outer wall can be easily attached.

  According to the unit building of the present invention as set forth in claim 5, it has an excellent effect that it is possible to stabilize the installation state of the downpile.

  According to the unit building of the present invention as set forth in claim 6, it has an excellent effect that water can be prevented from leaking between the upper floor downpipe and the lower floor downpipe.

  The unit building according to the seventh aspect of the present invention has an excellent effect that the operation of covering the corner of the unit building with the corner outer wall can be easily performed.

  According to the unit building of the present invention as set forth in claim 8, there is an excellent effect that the infiltration of water from the joint can be suppressed.

  According to the unit building of the present invention as set forth in claim 9, an excellent effect that the appearance of the unit building is not damaged by the downspout and that the downspout can be easily cleaned or replaced. Have

It is a perspective view of a unit building concerning an embodiment. It is sectional drawing between the inner wall panel and outer wall panel of the unit building which concerns on embodiment. It is the perspective view which looked at the attachment means of the outer wall panel which concerns on embodiment from the inner side. It is explanatory drawing which shows the attachment procedure of the outer wall panel and vertical shaft which concern on (A) and (B) embodiment. It is a perspective view which shows the attachment state of the corner outer wall which concerns on embodiment. (A), (B), (C) It is explanatory drawing which shows the procedure which connects the downspout of the lower floor which concerns on embodiment, and the downspout of an upper floor. It is explanatory drawing which shows the state which attaches the corner outer wall which concerns on (A) and (B) embodiment to the outer wall panel of a girder side, and the outer wall panel of a wife side.

  A unit building according to an embodiment of the present invention will be described.

  FIG. 1 shows a part of a unit building 10 of the present embodiment. As an example, the unit building 10 is a two-story building having a plurality of building units 12 assembled on a foundation 11 as a housing. The building unit 12 includes four pillars 14, two sets of long and short ceiling beams 16 arranged in parallel to each other, and two sets of long and short sets of floor beams 18 arranged in parallel with respect to the ceiling beams 16. The end of each beam is welded to the ceiling and floor joints to form a ramen structure. However, the unit configuration of the building unit 12 is not limited to the above, and may be another box-shaped frame structure.

  For the ceiling beam 16 and the floor beam 18, channel steel (grooved steel) having a U-shaped cross section is used. The ceiling beam 16 is assembled in a rectangular frame shape to form a ceiling frame 22, and the floor beam 18 is assembled in a rectangular frame shape to form a floor frame 24. Between the ceiling frame 22 and the floor frame 24, the above-mentioned four pillars 14 are erected.

  In FIG. 1, the arrow X direction is the girder direction, and the arrow Y direction is the wife direction, and the illustration of a part of the outer wall on the second floor, the illustration of the roof, and the part of the attaching means for the outer wall are omitted. is doing. Further, in the following description, the same reference numerals are given without distinguishing the first floor and second floor members of the building unit 12. Furthermore, when it is necessary to distinguish the members in the girder direction and the wife direction, X is added after the numeral of each member on the girder side, and Y is added after the numeral of each member on the wife side. The members in the girder direction and the wife direction are distinguished.

  An inner wall panel 20 as an example of an inner wall is attached to the indoor side surfaces of the ceiling beam 16 and the floor beam 18 by an attachment member (not shown). In addition, on the outdoor side of the ceiling beam 16 and the floor beam 18, an outer wall panel 30 as an example of an outer wall is spaced from the inner wall panel 20, and a first mounting portion 60 (see FIG. 3) as an example of mounting means described later. ), And the second mounting portion 70 (see FIG. 4A) is detachably provided. Further, on the outdoor side of the ceiling beam 16 and the floor beam 18, a vertical gutter 38 whose longitudinal direction is the vertical direction (arrow Z direction) is provided.

  The vertical gutter 38 is a cylindrical member, and is inserted into an annular fixture 39 (see FIG. 4A) attached to the side surface of the ceiling beam 16 and the floor beam 18 on the outdoor side, so that the ceiling beam 16 and floor beam 18. The vertical fence 38 is provided with a vertical fence 38A on the first floor (lower floor) and a vertical fence 38B (see FIG. 4B) on the second floor (upper floor), which are connected by a joint member 94 described later. Has been. The detailed structure between the inner wall panel 20 and the outer wall panel 30 will be described later.

  A wiring 28 is routed on the outdoor side of the inner wall panel 20 (between the outer wall panel 30). As an example, the wiring 28 has one end inserted through a through-hole 26 formed in the ceiling beam 16 in the girder direction and extending to a power distribution unit (not shown), and the other end formed in the inner wall panel 20. It is inserted through the hole 27 and connected to an indoor outlet 64 (see FIG. 2). Further, window holes 34A and 34B to which the window frame 32 is attached are formed in the inner wall panel 20X and the outer wall panel 30X. In addition, although the window frame 33 is attached to the window hole 35 in the outer wall panel 30Y, description on the inner wall panel side is omitted.

  On the other hand, a corner outer wall 50 as an example of a corner outer wall having an L-shaped cross section is provided at the corner of the unit building 10. The corner outer wall 50 is detachably attached to the outer wall panel 30X in the girder direction and the outer wall panel 30Y in the gable direction, and covers (conceals) the column 14 and the vertical rod 38 in the attached state, and also includes a part of the outer wall panel 30. Part.

  Next, a waterproof (moisture-proof) structure and a heat insulating structure of the unit building 10 will be described.

  As shown in FIG. 2, a plurality of layers of floor material 62 are provided on the upper surface of the floor beam 18 </ b> Y, and an inner wall panel 20 </ b> X is provided perpendicular to the upper surface of the floor material 62. And the 1st heat insulating material 42 is provided in the outdoor side (left side in FIG. 2) of the inner wall panel 20X in close contact with the inner wall panel 20X, and the first heat insulating material is provided on the outdoor side of the first heat insulating material 42. A first waterproof sheet 44 as an example of the first waterproof material is provided in close contact with (contact with) 42.

  On the other hand, a second heat insulating material 48 is provided in close contact with the outer wall panel 30X on the indoor side (right side in FIG. 2) of the outer wall panel 30X, and the second heat insulating material is provided on the indoor side of the second heat insulating material 48. A second waterproof sheet 46 as an example of the second waterproof material is provided in close contact with (contact with) 48. The 1st heat insulating material 42 and the 2nd heat insulating material 48 are comprised with the same material, and glass wool is used as an example. Moreover, the 1st waterproof sheet 44 and the 2nd waterproof sheet 46 are comprised with the same material which has waterproofness or moisture resistance, and the polyethylene sheet is used as an example. In addition, you may comprise the 1st waterproof sheet 44 and the 2nd waterproof sheet 46 with the material which has at least one of waterproofness and moisture resistance.

  Here, the first waterproof sheet 44 and the second waterproof sheet 46 are spaced apart by a preset distance, and the air passage 40 is formed between the first waterproof sheet 44 and the second waterproof sheet 46. Yes. Further, a gap 43 is formed between the outer wall panel 30 </ b> X and the foundation 11, and the outside of the unit building 10 and the ventilation path 40 communicate with each other through the gap 43. As a result, as indicated by an arrow A, air (outside air) flows from the outside through the gap 43 into the ventilation path 40 or air in the ventilation path 40 flows out through the gap 43 to the outdoors. It has become.

  Next, the mounting structure of the outer wall panel 30 will be described.

  As shown in FIG. 3, the lower portion of the outer wall panel 30 </ b> X is attached to the floor beam 18 </ b> X by a first attachment portion 60 as an example of attachment means (floor beam side attachment means). 4A and 4B, the upper end portion of the outer wall panel 30X is attached to the ceiling beam 16X by a second attachment portion 70 as an example of attachment means (ceiling beam side attachment means). It has become. 3, 4 (A) and (B), only the lower part or the upper part of the outer wall panel 30 </ b> X is shown, and the entire outer wall panel 30 is not shown.

  As shown in FIG. 3, the first mounting portion 60 includes a lower rail 72 as an example of a mounted member provided on the indoor side of the outer wall panel 30X using studs 66 and 67, and a lower portion provided on the floor beam 18X. Guide rails 82 and 84 as an example of guide members for guiding the rail 72 to the mounting position, and guide pins 86 and 88 as examples of positioning members provided on the guide rails 82 and 84 to position the lower rail 72 at the mounting position, , Including. In the present embodiment, the studs 66 and 67 are handled as one of the constituent members of the outer wall panel 30X and are included in the outer wall panel 30.

  The stud 66 is a metal member having an H-shaped cross section, and is a flat plate-like first flange 66A attached to the indoor side surface of the outer wall panel 30X, and projects vertically from the first flange 66A to the indoor side. A configuration in which a flat plate-like web 66B and a second flange 66C that is provided perpendicular to the end of the web 66B opposite to the first flange 66A and that is opposed to and parallel to the first flange 66A are integrated. It has become.

  Similarly, the stud 67 is a metal member having an H-shaped cross section, and is a flat plate-shaped first flange 67A attached to the indoor side surface of the outer wall panel 30X, and vertically extending from the first flange 67A to the indoor side. The projecting flat web 67B is integrated with the second flange 67C which is provided perpendicularly to the end of the web 67B opposite to the first flange 67A and which is disposed in parallel with the first flange 67A. It has been configured. The studs 66 and 67 are fixed to the outer wall panel 30X by fixing means such as bolts (not shown) at intervals in the girder direction.

  The lower rail 72 has a shape in which a metal flat plate is bent at a plurality of locations (here, 3 locations). When viewed in the spar direction, bolts or the like (not shown including fastening holes) are shown on the second flanges 66C and 67C. The vertical portion 72A attached to the upper portion of the vertical portion 72A, the flat portion 72B bent perpendicularly to the indoor side at the upper end of the vertical portion 72A, and a diagonally downward direction from the end of the flat portion 72B opposite to the vertical portion 72A An inclined portion 72C that is bent inwardly and includes an inclined surface 72E, and a mounting surface portion 72D that is bent horizontally from the lower end of the inclined portion 72C toward the indoor side and is mounted on the guide rails 82 and 84. ing. In addition, the mounting surface portion 72D is formed with notches 74 and 76 that are cut out in a rectangular shape with a size that allows extrapolation to the guide pins 86 and 88, respectively.

  On the other hand, the guide rail 82 has a shape in which a metal flat plate is bent in a reverse shape at one place when viewed in the direction of the beam, and bolts or the like (not shown including fastening holes) are formed on the upper surface of the floor beam 18X. A flat plate portion 82A fixed by the fixing means (not shown), and an inclined portion 82B inclined obliquely upward with respect to the horizontal plane from the outdoor side end portion of the flat plate portion 82A toward the outdoor side. The inclined portion 82B has the same inclination direction, inclination angle, and inclination width as the inclined surface 72E of the lower rail 72, and has an inclined surface 82C that comes into contact with the inclined surface 72E.

  Similarly, the guide rail 84 has a shape in which a metal flat plate is bent in a reverse shape at one place when viewed in the spar direction, and a bolt or the like (including a fastening hole is illustrated on the upper surface of the floor beam 18X). The flat plate portion 84A is fixed by the fixing means, and the inclined portion 84B is inclined obliquely upward with respect to the horizontal plane from the outdoor side end portion of the flat plate portion 84A toward the outdoor side. The inclined portion 84B has the same inclination direction, inclination angle, and inclination width as the inclined surface 72E of the lower rail 72, and has an inclined surface 84C that comes into contact with the inclined surface 72E.

  The guide pin 86 is a substantially columnar member erected at the center of the flat plate portion 82A of the guide rail 82, and has a shape (conical shape) with a sharp upper end when viewed in the spar direction. Further, the notch 74 of the lower rail 72 is extrapolated to the guide pin 86. Similarly, the guide pin 88 is a substantially columnar member erected at the center of the flat plate portion 84A of the guide rail 84, and has a shape (conical shape) with a sharp upper end when viewed in the spar direction. Further, the notch 76 of the lower rail 72 is extrapolated to the guide pin 88.

  As shown in FIG. 4 (A), the second mounting portion 70 includes a protruding member 92 provided at the upper end of the stud 66 and the stud 67 (see FIG. 3), and the protruding member 92 is fixed to the ceiling beam 16X. And a rivet 93 (see FIG. 4B) as an example of the fixing member. The protruding member 92 is formed in an L-shaped cross section when viewed in the spar direction, and a vertical portion 92A attached to the second flange 66C of the stud 66 (and the second flange 67C of the stud 67), and the vertical portion 92A. And a projecting portion 92B projecting toward the indoor side.

  Both ends of the overhanging portion 92B in the spar direction are further widened portions 95 widened toward the indoor side. The widened portion 95 has a fastening hole 92C penetrating in the vertical direction and larger than the fastening hole 92C. A through hole 92 </ b> D that penetrates in a vertical direction with a diameter and is fitted with a fitting member 94 (see FIG. 4B) as an example of a fitting member and a joint described later is formed. In addition, since the 2nd attachment part 70 becomes a right-and-left symmetrical structure in a digit direction, in FIG. 4 (A) and (B), only one edge part of the overhang | projection member 92 is shown in figure, and the other illustration is carried out. Is omitted.

  On the other hand, a fastening hole 17 to which the rivet 93 is fastened is formed in the upper flange of the ceiling beam 16X. Then, as shown in FIGS. 4A and 4B, after the outer wall panel 30X is slid in the wife direction (arrow Y direction) and the widened portion 95 is placed on the upper surface of the ceiling beam 16X, the fastening hole 92C and fastening are performed. By inserting and fixing the rivet 93 in a state where the hole positions of the holes 17 are matched, the overhanging member 92 is fixed to the ceiling beam 16X, that is, the outer wall panel 30X is attached to the ceiling beam 16X.

  As shown in FIG. 6A, the joint member 94 includes a first cylindrical portion 94A having an outer diameter substantially equal to the through-hole 92D and an outer diameter substantially equal to the inner diameter of the vertical rod 38A, and the first cylindrical portion 94A. The second cylindrical portion 94B has a large diameter and an inner diameter substantially equal to the outer diameter of the vertical rod 38B (see FIG. 6C). The second cylindrical portion 94B is disposed on the upper side of the first cylindrical portion 94A, and the first cylindrical portion 94A and the second cylindrical portion 94B are integrally formed. The vertical lengths of the first cylindrical portion 94A and the second cylindrical portion 94B are such that the first cylindrical portion 94A can be fitted into the vertical rod 38A in a state where the joint member 94 is fitted into the through hole 92D, and The length is set such that the vertical rod 38B can be fitted into the second cylindrical portion 94B.

  Next, the mounting structure of the corner outer wall 50 will be described.

  As shown in FIG. 5, the corner outer wall 50 is respectively attached to the outer wall panel 30 </ b> X on the spar side and the outer wall panel 30 </ b> Y on the wife side by a girder side mounting portion 102 and a wife side mounting portion 104 as examples of corner mounting means described later. Installed. Further, a fixed sealing material 110X as an example of a covering member that covers the joint is attached to the joint between the corner outer wall 50 and the outer wall panel 30X, and the joint between the corner outer wall 50 and the outer wall panel 30Y is attached to the joint. A fixed sealing material 110Y as an example of a covering member that covers the surface is attached.

  As shown in FIG. 7A, the spar-side mounting portion 102 includes a plurality of screws 118 as an example of a fastening member fastened to a stud 66 constituting a part of the outer wall panel 30X, and the spar side of the corner outer wall 50. And a guided portion 112 that is guided by a plurality of screws 118. Only two screws 118 are shown, and other screws are not shown.

  The outer wall panel 30X is attached to the left half of the first flange 66A when the stud 66 is viewed in the wife direction, and the fastening holes 116A and 116B to which a plurality of screws 118 are fastened are attached to the right half of the first flange 66A. Are formed at intervals in the vertical direction. The plurality of screws 118 are temporarily fastened to the fastening holes 116A and 116B before the corner outer wall 50 is attached, and are fastened after the guided portions 112 are guided to the plurality of screws 118. . Further, by loosening the plurality of screws 118, the corner outer wall 50 can be removed.

  The guided portion 112 is a flat plate-like portion projecting to one end on the beam side of the corner outer wall 50, and a plurality of guided portions 112 are vertically arranged in accordance with the formation positions (heights) of the fastening holes 116 </ b> A and 116 </ b> B of the stud 66. Cutout portions 114A and 114B are formed as an example of cutouts. The notches 114A and 114B are U-shaped having the same size and opened toward the outer wall panel 30X, and have an opening width slightly larger than the outer diameter of the screw 118. Thereby, by inserting the notches 114A and 114B into the plurality of temporarily tightened screws 118, the corner outer wall 50 is slid and guided in the girder direction (arrow X direction).

  Here, a stepped portion 142 is formed at one end of the outer wall panel 30X attached to the stud 66, and a stepped portion 144 including the guided portion 112 is formed at one end of the corner outer wall 50 on the beam side. Yes. Thereby, the corner outer wall 50 is attached to the stud 66, and the fixed seal material 110X (see FIG. 5) is fitted between the step portion 142 and the step portion 144 in a state where the step portion 142 and the step portion 144 face each other. Then, the fixed sealing material 110X is attached so as to cover these joints.

  On the other hand, as shown in FIG. 7B, the wife-side mounting portion 104 is a portion to be fastened to a stud 122 (similar shape to the stud 66) that constitutes a part of the outer wall panel 30Y with a plurality of screws 136. 132. The fastened portion 132 is a flat portion projecting from one end of the corner outer wall 50 on the end side, and a plurality of fastening holes 134A and 134B (only two places in the drawing) are formed at intervals in the vertical direction. ing. Then, a plurality of screws 136 are connected to a plurality of fastening holes (not shown) formed in the stud 122 and the fastening holes 134A and 134B to fasten one end of the corner outer wall 50 on the wife side. It has become. The formation positions of the fastening holes 134A and 134B are determined in advance so as to communicate with the fastening holes of the stud 122 as the corner outer wall 50 slides toward the spar.

  Here, a stepped portion 146 is formed at one end of the outer wall panel 30Y attached to the stud 122, and a stepped portion 148 including the fastened portion 132 is formed at one end of the corner outer wall 50 on the wife side. Yes. Thus, the corner outer wall 50 is attached to the stud 122, and the fixed seal material 110Y (see FIG. 5) is fitted between the step portion 146 and the step portion 148 in a state where the step portion 146 and the step portion 148 face each other. Then, the fixed sealing material 110Y is attached to cover these joints.

  As shown in FIG. 5, a protruding member 124 having the same shape as the protruding member 92 is attached to the stud 122 vertically (not shown on the lower side), and the protruding member 124 is attached to the ceiling. The outer wall panel 30Y on the wife side is fixed by being fixed to the beam 16Y and the floor beam 18Y (see FIG. 1) with a rivet 126.

  Next, the operation of this embodiment will be described.

  First, the installation (installation) procedure of the outer wall panel 30X and the corner outer wall 50 will be described.

  In FIG. 1, first, in a factory, a building unit 12 is constructed by assembling a ceiling frame 22, a floor frame 24, and a pillar 14, and further, an inner wall panel 20, a wife side outer wall panel 30 </ b> Y, and a guide Install rails 82, 84, etc. Then, the building unit 12 is transported to the construction site of the unit building 10. Here, since this building unit 12 is not attached with the outer wall panel 30X on the girder side, the width during transportation can be set shorter than the transportation limit width (2.5 m).

  On the other hand, as shown in FIG. 3, at the factory, studs 66 and 67 and a lower rail 72 are attached to the surface on the indoor side of the outer wall panel 30X with fixing means such as bolts. Further, as shown in FIG. The window frame 32 is attached to the panel 30X. In this state, the outer wall panel 30X is transported to the construction site of the unit building 10 separately from the building unit 12. The corner outer wall 50 is also transported separately. In addition, since the outer wall panel 30X is transported independently, even if it transports in the state which attached the window frame 32, it does not exceed a transport restriction width.

  Subsequently, at the construction site, a plurality of building units 12 are installed on the foundation 11 constructed in advance. Then, the outer wall panel 30X on the girder side is suspended by a crane (not shown) and arranged on the side surface of the building unit 12 in the open state.

  Subsequently, in FIG. 3, the outer wall panel 30X is held at a height at which the guide pins 86 and 88 do not contact the lower rail 72, the lower portion of the inclined surface 72E of the lower rail 72, and the inclined surfaces 82C of the guide rails 82 and 84, The outer wall panel 30X is slid in the digit direction (arrow X direction) in a state in which the upper portion of 84C is in contact. And by visual confirmation, when the spar direction position of the notches 74 and 76 of the lower rail 72 and the spar direction position of the guide pins 86 and 88 substantially coincide, the inclined surface 72E is formed along the inclined surfaces 82C and 84C. Slide diagonally downward. At this time, since the notches 74 and 76 are inserted into the guide pins 86 and 88 and positioned, the lower part of the outer wall panel 30X is positioned with respect to the floor beam 18X. Thus, since the lower rail 72 is guided to the mounting position by the guide rails 82 and 84 and the guide pins 86 and 88, the trouble of searching for the mounting position when the outer wall panel 30X is mounted on the floor beam 18X can be saved, and the outer wall panel 30X. The mounting work time can be shortened and the mounting work becomes easy.

  On the other hand, when the inclined surface 72E is slid obliquely downward along the inclined surfaces 82C and 84C and the outer wall panel 30X is positioned, as shown in FIG. 16X is arranged. Here, the projecting member 92 is fixed to the ceiling beam 16X using the rivet 93, and the lower rail 72 (see FIG. 3) is fixed to the floor beam 18X (see FIG. 3) by fixing means (not shown) such as bolts. To do. Thereby, the upper part and the lower part of the outer wall panel 30X are fixed with respect to the ceiling beam 16X and the floor beam 18X.

  Subsequently, as shown in FIGS. 6A and 6B, after the joint member 94 is once lifted upward to adjust the position or inclination of the vertical rod 38A in the horizontal plane, the first cylindrical portion 94A is Fit into the upper end of the vertical rod 38A. Subsequently, as shown in FIG. 6C, the lower end portion of the vertical rod 38B is fitted into the second cylindrical portion 94B. Thereby, since the inside of the vertical rod 38A and the vertical rod 38B is fixed, the installation state of the vertical rods 38A and 38B can be stabilized. Furthermore, since the installation state of the vertical rods 38A and 38B is stabilized, it is possible to prevent water from leaking between the vertical rod 38A and the vertical rod 38B.

  Subsequently, as shown in FIG. 7A, the notch portions 114A and 114B of the guided portion 112 are extrapolated to a plurality of screws 118 temporarily fastened to the first flange 66A of the stud 66, so that the corner outer wall 50 is formed. Slide in the digit direction. When the corner outer wall 50 is disposed at the attachment position, the screw 118 is tightened to fix the guided portion 112 to the stud 66. Thereby, the girder side of the corner outer wall 50 is fixed. Since the corner outer wall 50 is guided to the mounting position by extrapolating the notches 114A and 114B to the screw 118, the installation work of the corner outer wall 50 is facilitated.

  On the other hand, as shown in FIG. 7B, when the corner outer wall 50 is disposed at the mounting position, the fastened portion 132 is fixed to the stud 122 with a plurality of screws 136. Thereby, the wife side of the corner outer wall 50 is fixed. Subsequently, as shown in FIG. 5, the fixed sealing material 110 </ b> X is fitted between the stepped portion 142 and the stepped portion 144, and the fixed sealing material 110 </ b> Y is fitted between the stepped portion 146 and the stepped portion 148. Thereby, since the connection site | part (joint) of the corner outer wall 50 and the outer wall panels 30X and 30Y is covered, the permeation of the water from this connection site | part to the inside of the unit building 10 can be suppressed. In this way, the outer wall panel 30X and the corner outer wall 50 are installed.

  Here, in the unit building 10, since the vertical fence 38 is covered by the corner outer wall 50, the vertical fence 38 is not exposed to wind and rain, and durability is improved. Further, since the vertical fence 38 is concealed by the outer wall panel 30X and the corner outer wall 50, there is no extra piping outside the building, and the appearance (aesthetics) of the unit building 10 is not impaired.

  As shown in FIGS. 7A and 7B, the fixed seal members 110X and 110Y (see FIG. 5) are removed, the fastening with the plurality of screws 136 is released, and the plurality of screws 118 are loosened in the corner. The corner outer wall 50 is removed by sliding the outer wall 50 in the girder direction (opposite side). As a result, as shown in FIG. 4B, since the vertical hook 38 is exposed in a state where maintenance is possible, the vertical hook 38 can be easily cleaned and replaced.

  When the outer wall panel 30X is removed, the rivet 93 is removed in FIG. 4B, and the lower rail 72 and the guide rails 82 and 84 are fixed as shown in FIG. 3 (not shown). The outer wall panel 30X is slid and removed. Thereby, the 1st waterproof sheet 44 and the 2nd waterproof sheet 46 are exposed.

  Next, the effect | action of each heat insulating material and each waterproof sheet is demonstrated.

  As shown in FIG. 2, in the unit building 10, the first heat insulating material 42 is provided between the inner wall panel 20 </ b> X and the first waterproof sheet 44, and the second heat insulating material is provided between the outer wall panel 30 </ b> X and the second waterproof sheet 46. Since there are 48, heat transfer from the outer wall panel 30X to the inner wall panel 20X is suppressed by the heat insulating action of these multiple layers of heat insulating material. Thereby, the heat insulation performance of the unit building 10 improves. Furthermore, since the 1st heat insulating material 42 and the 2nd heat insulating material 48 function as a refractory material, fire resistance performance can also be improved.

  Moreover, in the unit building 10, since the 1st waterproof sheet 44 and the 2nd waterproof sheet 46 are provided between the 1st heat insulating material 42 and the 2nd heat insulating material 48, compared with the case where one layer of water insulating material is used. Thus, the intrusion of water into the indoor side of the unit building 10 is suppressed, and the waterproof performance can be improved. And since the 1st waterproof sheet 44 and the 2nd waterproof sheet 46 also have moisture resistance, the condensation to the 1st waterproof sheet 44 and the 2nd waterproof sheet 46 becomes difficult to occur. As a result, the unit building 10 can be adapted to cold district specifications.

  Further, in the unit building 10, the air passage 40 formed between the first waterproof sheet 44 and the second waterproof sheet 46 is an air layer, and heat transfer from the outdoor side to the indoor side is suppressed by this air layer. Therefore, the heat insulation performance of the unit building 10 can be improved. Further, since the structure is divided into an inner wall side having the first waterproof sheet 44 and an outer wall side having the second waterproof sheet 46, for example, only the building unit 12 is installed at the construction site and the work is completed. Then, even if it rains after that, since the inner wall side is protected by the first waterproof sheet 44, it is possible to finish the work.

  In addition, in the unit building 10, as shown in FIG. 1, since the wiring 28 is provided on the outdoor side of the inner wall panel 20 </ b> X, complicated wiring (HEMS, household storage battery, solar power generation, AC / DC mixed) Wiring is easy to construct (route).

  Further, in the unit building 10, by removing the outer wall panel 30X, the first heat insulating material 42 and the first waterproof sheet 44 on the inner wall panel 20 side, and the second heat insulating material 48 and the second waterproof sheet 46 on the outer wall panel 30X side are obtained. Because it is divided, compared to the case where a single layer of thick heat insulating material is provided on the inner wall panel 20 or outer wall panel 30X side, the thickness of the heat insulating material for maintenance is reduced, and maintenance work such as replacement of the heat insulating material is easy. It becomes. In addition, since the first waterproof sheet 44 and the second waterproof sheet 46 are exposed by removing the outer wall panel 30X, the maintenance work of the first waterproof sheet 44 and the second waterproof sheet 46 becomes easy.

  Furthermore, since the outer wall panel 30X can be removed, the outer wall panel 30X can be replaced with another outer wall after the outer wall panel 30X is removed, which is effective for reforming. In addition, since the first heat insulating material 42 is already attached to the inner wall panel 20 at the time of reforming, the outer wall panel 30X can be replaced with an outer wall material without heat insulating material, which is also effective in reducing parts and costs. It is.

  In addition, this invention is not limited to said embodiment.

  The outer wall panel 30 may be composed of a plurality of panel materials, and the corner outer wall 50 may be composed of curved surfaces on the side surfaces. Further, the studs 66 and 67 may be formed in an H shape by combining two members having a U-shaped flat cross section. Further, a drain may be used for the joint member 94. The girder mounting portion 102 may be provided with the guided portion 112 and the notches 114A and 114B on the outer wall panel 30X side, and with the screw 118 on the corner outer wall 50 side.

10 unit building 20 inner wall panel (example of inner wall)
30 outer wall panel (example of outer wall)
38A downspout (an example of downspout downstairs)
38B downspout (an example of upstairs downspout)
40 Ventilation path 42 1st heat insulating material 44 1st waterproof sheet (an example of 1st waterproof material)
46 2nd waterproof sheet (an example of 2nd waterproof material)
48 2nd heat insulating material 50 Corner outer wall (an example of corner outer wall)
60 1st attachment part (an example of attachment means on floor beam side, attachment means)
70 Second mounting portion (an example of mounting means on the ceiling beam side, mounting means)
72 Lower rail (an example of a mounted member)
72E inclined surface (an example of an inclined surface of a member to be mounted)
82 Guide rail (an example of a guide member)
82C inclined surface (example of inclined surface of guide member)
84 Guide rail (an example of a guide member)
86 Guide pin (example of positioning member)
88 Guide pin (example of positioning member)
92 Overhang member 93 Rivet (an example of a fixing member)
94 Joint member (example of fitting member and joint)
102 Girder mounting part (an example of corner mounting means)
104 Wife side mounting part (an example of corner mounting means)
110X fixed sealing material (an example of a covering member)
110Y fixed sealing material (an example of a covering member)
112 Guided portion 114A Notch (an example of a notch)
114B Notch (an example of a notch)
118 screw (an example of a fastening member)

Claims (9)

A first heat insulating material provided on the outdoor side of the inner wall attached to the beam;
A first waterproof material that is waterproof or dampproof and provided in contact with the outdoor side of the first heat insulating material;
An attaching means for detachably attaching an outer wall to the beam;
A second heat insulating material provided on the indoor side of the outer wall;
A second waterproof material that is waterproof or moisture proof and disposed on the outdoor side of the first heat insulating material and in contact with the indoor side of the second heat insulating material;
Having a unit building.   The unit building according to claim 1, wherein an air passage through which air flows is formed between the first waterproof material and the second waterproof material. The attachment means includes
A mounted member provided on the outer wall;
A guide member provided on a floor beam among the beams to guide the attached member to an attachment position;
A positioning member provided on the guide member for positioning the mounted member at the mounting position;
The unit building according to claim 1, further comprising floor beam side mounting means provided with the above.   The unit building according to claim 3, wherein the attached member and the guide member have an inclined surface, and the inclined surface of the attached member is guided in contact with the inclined surface of the guide member. The attachment means includes
A projecting member provided on the outer wall and projecting toward the indoor side;
A fixing member for fixing the projecting member to a ceiling beam among the beams;
A ceiling beam side mounting means comprising
The unit building according to any one of claims 1 to 4, wherein the overhang member is provided with a fitting member that is fitted to a vertical gutter provided on the outdoor side of the inner wall.   The unit building according to claim 5, wherein the fitting member is a joint that connects the upper part of the downpipe on the lower floor and the lower part of the downpipe on the upper floor. A corner outer wall that is attached to one end of the outer wall on the girder side and one end of the outer wall on the wife side and constitutes a part of the outer wall;
Corner attachment means for attaching the corner outer wall to the outer wall on the girder side and the outer wall on the wife side;
Is provided,
The corner mounting means is
A fastening member fastened to the outer wall or the corner outer wall;
A guided portion provided on a side where the fastening member of the outer wall or the corner outer wall is not fastened and having a notch guided by the fastening member;
The unit building according to any one of claims 1 to 6, comprising:   The unit building according to claim 7, wherein a covering member that covers joints between the outer wall and the corner outer wall is provided.   The unit building according to claim 7 or 8, wherein a vertical gutter provided on the outdoor side of the inner wall is concealed by the corner outer wall.

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