JP5143496B2 - Extension structure and extension method - Google Patents

Description

  The present invention relates to an extension hardware used for extension of a building, an extension structure including the extension hardware, and an extension method using the extension hardware.

  In recent years, with the extension of the building life, the number of buildings has been increased according to the life plan.

  For example, when trying to build a child's residence on the same site as the parents' residence, there are cases where the kitchen and toilet are shared and only the living room is expanded due to land restrictions.

  When building a building in this way, the existing building and the building on the extension side are connected, and the existing side and the building side are integrated to ensure the necessary strength for earthquake resistance. It is common.

  And the metal fitting installed ranging over the existing side and the extension side may be used for this connection.

  As such a metal fitting, for example, Patent Document 1 discloses a connection tool that is passed to the upper end of each wall panel of the wall-type construction method. By using this connector, each wall panel of a plurality of building units can be reliably connected in a predetermined butt angle state.

  Further, Patent Document 2 discloses that the connection tool is used as a ruler for connection by setting the length along the longitudinal direction of the corresponding wall panel to be twice or more the thickness of the wall panel. Has been. Thereby, each wall panel can be installed at an accurate position.

Furthermore, in Patent Document 3, when an upper-floor building unit is placed on a lower-floor building unit group, the upper end of each wall panel is connected by a connector, and the floor panel of the upper-floor building unit is placed thereon. Is disclosed. By placing the upper floor building unit in this way, the upper floor building unit can be placed on the lower floor building unit group with a simple structure.
Sho 60-238543 Sho 60-238544 Sho 60-238545

  However, in the configuration of the above-mentioned patent document, since the connecting device is installed so as to pass over the upper end of the wall panel, in the case of extension, the upper floor portion on the existing side is removed in advance before installing the connecting device. It was necessary to keep.

  Furthermore, since the above-mentioned connection tool is attached to the upper end portion of the wall panel, the joint bolt for connecting the upper and lower floors becomes an obstacle and the length may be limited. If the length of the connection tool is limited in this way, there is a possibility that the connection strength required for the building cannot be obtained.

  Therefore, the present invention can be constructed without removing the upper floor portion of the existing side, and additionally, an extension hardware that can secure the necessary strength, an extension structure that includes the extension hardware, and an extension that uses the extension hardware. And aims to provide a method.

  In order to achieve the above object, the extension hardware according to the present invention is an extension hardware for connecting the existing side and the extension side when the building is extended, and includes a side member on the existing side and a side member on the extension side. It is provided with the horizontal connection board installed ranging over a member, and the vertical connection board installed ranging over the existing vertical member and the extension vertical member.

  Moreover, the said horizontal connection board can be provided with the notch corresponding to the position of the volt | bolt for attaching another structure to the said existing horizontal member or the said additional lateral member.

  Furthermore, the vertical connection plate can be provided on both sides of the horizontal connection plate.

  The extension structure of the present invention is an extension structure including any one of the above-described extension hardware, wherein the lateral connecting plate is formed by the lower surface of the uppermost lateral member of the existing-side wall and the extension-side wall. It is installed across the lower surface of the uppermost horizontal member, and the vertical connecting plate straddles the vicinity of the upper side surface of the vertical member of the existing wall and the upper side surface of the vertical member of the extension wall. It is installed.

  Further, according to the extension structure of the present invention, the building is a building of a wall type construction method including a floor panel and a wall panel, and the lateral connection plate is provided on the lower surface of the upper frame of the existing side wall panel and the extension side wall panel. In addition to being installed across the lower surface of the frame, the vertical connection plate is installed across the vicinity of the upper end of the vertical frame of the existing side wall panel and the vicinity of the upper end of the vertical frame of the additional side wall panel. .

  Furthermore, the extension method of the present invention is an extension method using any one of the above-described extension hardware, wherein a part of the outer wall surface material of the existing building is removed, and the extension is extended in parallel to the outer wall of the existing building. Install the outer wall of the side building, install the horizontal connecting plate across the lateral member of the outer wall of the existing side and the lateral member of the outer side of the extension side, and the vertical member of the outer side of the existing side and the outer wall of the additional side The vertical connecting plate is installed across the vertical member, and an inner wall surface material is attached to the extension building.

  As described above, the extension hardware according to the present invention includes a horizontal connecting plate that is installed across the existing side member and the extension side member, and the existing side member and the extension side member. A vertical connecting plate installed across the board.

  Therefore, even when the length of the horizontal connecting plate is limited by an obstacle or the like, the necessary strength can be ensured by making up the shortage with the length of the vertical connecting plate.

  In addition, the lateral connection plate is provided with a notch corresponding to the position of the bolt for attaching another structure to the existing lateral member or the additional lateral member, so that the bolt becomes an obstacle. In addition, it is possible to secure the necessary length as extension hardware.

  Furthermore, by providing the vertical connection plates on both sides of the horizontal connection plate, the required length can be ensured even when the length of the single vertical connection plate is insufficient.

  And in the extension structure of the present invention, the horizontal connecting plate is installed across the lower surface of the uppermost lateral member of the wall on the existing side and the lower surface of the uppermost lateral member of the wall on the additional side, The vertical connecting plate is installed across the vicinity of the upper end of the vertical member of the wall on the existing side and the upper end of the side surface of the vertical member of the additional wall.

  Therefore, it is possible to obtain the required strength by attaching the extension hardware to a high position, and to connect the existing side and the extension side with the upper floor part of the existing side being placed. it can.

  In the extension structure of the present invention, the horizontal connection plate is installed across the lower surface of the upper frame of the existing side wall panel and the lower surface of the upper frame of the additional side wall panel, and the vertical connection plate is It is installed across the vicinity of the upper end of the vertical frame of the side wall panel and the vicinity of the upper end of the vertical frame of the additional side wall panel.

  Therefore, since the wall panels can be firmly connected by connecting the upper frames and the vertical frames that are the structural materials of the wall panels, the building units can be firmly connected.

  Further, the extension method according to the present invention includes removing a part of the outer wall material of the existing building, installing the outer wall of the additional building parallel to the outer wall of the existing building, And installing the horizontal connecting plate straddling the lateral member of the outer wall on the extension side, and installing the vertical connecting plate straddling the vertical member of the outer wall on the existing side and the vertical member of the outer wall on the extension side, It is characterized by attaching an inner wall material to the extension building.

  Therefore, the existing side and the extension side can be connected by simple construction while the upper floor portion of the existing side is placed.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  First, the whole structure of the unit building U provided with the extension hardware 7 of this Embodiment is demonstrated using FIG.

  FIG. 2 is a perspective view illustrating the entire structure of the unit building U according to the present embodiment, omitting some building units 1, 2, and 2.

  The unit building U according to the present embodiment is a so-called framed wall construction building, and as shown in FIG. The existing unit 3 on the first floor installed on the top, the existing unit 4 on the second floor installed on the existing unit 3 on the first floor 3,. And a building-side roof unit 61.

  The existing units 3 on the first floor are fixed to the existing foundation 51 by anchor bolts (not shown), and the existing units 4 on the second floor are joint bolts 81 (see FIG. 4). ) Is fixed to the existing units 3, ... on the first floor.

  The unit building U according to the present embodiment includes an extension side foundation 52 constructed by concrete or the like adjacent to the existing side foundation 51 as an extension side, and a first floor installed on the extension side foundation 52. An extension unit 1,..., A second floor extension unit 2,... Installed on the first floor extension unit 1,..., And an extension side roof unit 62 are provided.

  The extension units 1,... On the first floor are fixed to the extension side base 52 by anchor bolts (not shown), and the extension units 2,... On the second floor are 1 by joint bolts 81 (see FIG. 4). It is fixed to the extension unit 1, ... on the floor.

  As shown in the exploded view of FIG. 3, the extension unit 1 on the first floor includes a floor panel 15 and wall panels 16, 16 and 16 erected on three sides of the floor panel 15. In FIG. 3, the inner wall material provided in practice is omitted for convenience of explanation.

  The floor panel 15 is configured by sticking a floor surface material 19 such as a particle board or a structural plywood on the upper surface of a so-called 206 material or 210 material frame (not shown).

  The wall panel 16 includes a lower frame 18 that is placed on the floor panel 15, an upper frame 11 that is a horizontal member that is parallel to the lower frame 18 and located at the uppermost portion, and a lower frame 18 and an upper frame 11. And a plurality of vertical frames 12,... Further, a part of the wall panels 16 has a window opening 17 for providing a window for ventilation and lighting.

  These lower frame 18, upper frame 11, and vertical frame 12 are formed of so-called 204 material, and in addition to being directly fixed to each other by nails, an outer wall surface material 14 and an inner wall surface material to be described later. It is fixed indirectly to each other by being fixed by (not shown) and a nail.

  And on the outdoor side of the frame composed of the lower frame 18, the upper frame 11, and the vertical frame 12, an outer wall surface material 14 such as a hard wood piece cement board, a structural plywood or a sizing board is pasted, and on the indoor side Inner wall materials such as plasterboard and structural plywood are affixed.

  In addition, the outer wall surface material 14 on the side connected to the existing floor unit 3 on the first floor in the extension unit 1 on the first floor is removed in advance because it becomes the back side of the indoor wall when the extension is completed.

  In addition, a joint plate (not shown) is installed on the upper surface of the upper frame 11 on the side in contact with the adjacent extension unit 1 on the first floor so as to straddle the upper frames 11 of the two extension units 1. One is connected horizontally.

  The configuration of the extension unit 1 on the first floor is substantially the same in the extension unit 2 on the second floor, the existing unit 3 on the first floor, and the existing unit 4 on the second floor.

  In the unit building U of the present embodiment, as shown in FIGS. 1 and 4 which are enlarged views of a portion A circled in FIG. 2, the wall panel 36 of the existing unit 3 on the first floor, and this wall The extension hardware 7 is installed across the wall panel 16 of the extension unit 1 on the first floor, which is arranged in parallel with the panel 36 and adjacent to each other, so that the extension structure S is formed.

  The extension hardware 7 is formed in a substantially L shape as a whole by forming a horizontal connecting plate 71 and a vertical connecting plate 72 by bending a rectangular metal plate at a substantially right angle.

  The horizontal connecting plate 71 has an upper surface formed on the lower surface of the upper frame 31 of the existing unit 3 on the first floor and the upper frame 11 of the first floor extension unit 1 formed on the same plane as the lower surface of the upper frame 31. It is spanned so as to be in contact with both the lower surface and fixed by nails 82.

  Further, the horizontal connection plate 71 has notches for attaching joint bolts 81,... As bolts for fixing the second-floor existing unit 3 and the second-floor extension unit 2 which are different structures. .. Are provided.

  A joint bolt 81 as a bolt for fixing the first floor and the second floor and a washer 83 are installed in the notch 71b, and the first floor and the second floor are firmly connected.

  In addition, the horizontal connecting plate 71 is formed to have a narrower width than the cord notches 11a and 31a so that a cord such as an electric wire can be inserted in a state of being installed across the upper frames 11 and 31. .

  The vertical connecting plate 72 is formed by bending one end of the horizontal connecting plate 71 at a substantially right angle, and the outer surface of the plate is in the vicinity of the upper end of the vertical frame 32 of the existing unit 3 on the first floor. Between the inner side surface of the vertical frame 12 and the inner side surface near the upper end of the vertical frame 12 of the extension unit 1 on the first floor formed on the same plane as the inner side surface of the vertical frame 32. 82,...

  The horizontal connecting plate 71 and the vertical connecting plate 72 are provided with nail holes 71a, 72a, ... for attaching nail 82, ..., and these nail holes 71a, 72a, ... are provided. , And the extension hardware 7 is fixed to the upper frames 11 and 31 and the vertical frames 12 and 32.

  The extension structure S including the extension hardware 7 described above is substantially the same in the connection between the existing unit 4 on the second floor and the extension unit 2 on the second floor (the portion B circled in FIG. 2). Therefore, explanation is omitted.

  Next, the flow of the construction method of the extension structure S provided with the extension hardware 7 of this Embodiment is demonstrated using FIG.

  First, as shown in FIG. 5A, an extension side foundation 52 is constructed of concrete or the like adjacent to the existing side foundation 51, and the extension unit 1, 1 on the first floor is formed on the extension side foundation 52. Is fixed by a plurality of anchor bolts (not shown).

  Further, extension hardware 7 and 7 are attached to the locations A and A surrounded by a circle in FIG.

  Next, as shown in FIG. 5 (b), the extension units 2 and 2 on the second floor are placed on the extension units 1 and 1 on the first floor and fixed by a plurality of joint bolts (not shown).

  Further, the extension hardware 7 and 7 and the like are attached to the places B and B surrounded by a circle in FIG.

  Finally, the extension-side roof unit 62 is placed on the extension units 2 and 2 on the second floor and fixed by a plurality of joint bolts (not shown), and the extension is completed.

  Next, the construction sequence of the extension hardware 7 at the locations A and B described above will be described in detail with reference to the explanatory diagrams of FIGS. Since the construction order of the extension hardware 7 at these locations A and B is substantially the same, the location A where the existing unit 3 on the first floor and the extension unit 1 are connected will be described as an example.

  First, the state before construction will be described. As shown in FIG. 6A, the second-floor existing unit 4 is placed on the first-floor existing unit 3. And each outer wall surface material 34 and 44 is installed continuously.

  Next, as shown in FIG. 6 (b), a part near the corner of the outer wall material 34 of the existing unit 3 on the first floor is cut into a substantially rectangular shape by an electric saw or the like, and the upper frame 31 or the vertical Frames 32 and 32 are exposed. At this time, a part of the heat insulating material of the already-built unit 3 in the cut portion is also removed.

  Next, as shown in FIG. 7A, the extension unit 1 is installed so as to be adjacent to the existing unit 3.

  Here, the outer wall surface material of the extension unit 1 is removed, and the inner wall surface material is also temporarily removed. Furthermore, the heat insulating material 85 of the extension unit 1 is bent so as not to hinder the installation of the extension hardware 7.

  The horizontal connecting plate 71 is in contact with both the lower surface of the upper frame 31 of the existing unit 3 and the lower surface of the upper frame 11 of the extension unit 1 formed on the same plane as the lower surface of the upper frame 31. , And fix it with nails 82,.

  At this time, the horizontal connecting plate 71 is installed such that the position of the notch 71 b coincides with the position of the bolt holes 11 b and 31 b provided in the upper frames 11 and 31.

  Similarly, the inner side surface near the upper end of the vertical frame 32 of the existing unit 3 and the inner side surface near the upper end of the vertical frame 12 of the extension unit 1 formed on the same plane as the inner side surface of the vertical frame 32. The vertical connecting plate 72 is bridged so as to be in contact with both, and is fixed by the nails 82.

  Therefore, the extension hardware 7 is attached as shown in FIG.

  Finally, the folded heat insulating material 85 is returned to the original position, and the inner wall surface material (not shown) that has been temporarily removed is attached to complete the construction.

  Next, the operation of the extension structure S including the extension hardware 7 according to the present embodiment will be described.

  As described above, the extension hardware 7 according to the present embodiment has the horizontal connecting plate 71 installed across the upper frame 31 that is the horizontal member of the existing unit 3 and the upper frame 11 that is the horizontal member of the extension unit 1. And a vertical connecting plate 72 installed across the vertical frame 32 which is a vertical member of the existing unit 3 and the vertical frame 12 which is a vertical member of the extension unit 1.

  Therefore, even when the length of the horizontal connecting plate 71 is limited by an obstacle or the like, the required strength can be ensured by making up with the vertical connecting plate 72.

  In other words, in general, when calculating the cross-sectional force etc. by applying seismic load, etc., the entire building is calculated as one structure. As a precondition, the existing side and the extension side must be connected. There is.

  In this case, it is desirable that the connection between the existing side and the extension side is performed as high as possible so that a large moment can be obtained.

  Therefore, as in the present embodiment, the horizontal connecting plate 71 is installed so as to follow the upper frames 11 and 31 which are the uppermost horizontal members of the respective units, but the existing unit 3 and the extension unit 1 are installed. To withstand the tensile force between the two, a certain length is required.

  In this case, in the case of a newly built building, the joint plate can be passed over the upper surfaces of both lateral members. However, in the case of an extended building as in this embodiment, the upper surface of the existing lateral member. Since another structure is mounted on the joint plate, the joint plate cannot be handed over.

  Furthermore, even if it is going to install a joint plate in the lower surface of the upper frames 11 and 31, the vertical frames 12 and 32 are attached to the upper frames 11 and 31 with a fixed space | interval, and the length required to endure a tensile force May not be secured.

  Therefore, in the present embodiment, the length necessary for the extension hardware 7 as a whole is secured by bending one end of the horizontal connecting plate 71 and attaching it to the vertical frames 12 and 32 which are vertical members. .

  If the horizontal connecting plate 71 and the vertical connecting plate 72 are provided in this way, even if the length of the horizontal connecting plate 71 is insufficient, it is necessary to provide the vertical connecting plate 72 having a length corresponding to the shortage. Long length can be secured.

  And the extension units 7 and 4 and the extension units 1 and 2 can be firmly connected to each other by the extension hardware 7 that is long enough to withstand the tensile force. The provided unit building U can be constructed.

  Further, the horizontal connecting plate 71 is positioned at a position of a joint bolt 81 which is a bolt for attaching another structure to the upper frame 31 which is a horizontal member of the existing unit 3 or the upper frame 11 which is a horizontal member of the extension unit 1. By providing the corresponding notch portion 71b, the joint bolt 81 does not become an obstacle, and the length necessary for the extension hardware 7 can be secured.

  That is, if the notch portion 71b is not provided, the horizontal connecting plate 71 in the vicinity of the joint bolt 81 floats from the upper frames 11 and 31 that are the horizontal members and cannot be attached. The number of nails 82,... For fixing the to the upper frames 11, 31 is limited.

  Thus, if the horizontal connecting plate 71 cannot be firmly fixed to the upper frames 11 and 31, as a result, the tensile force between the units cannot be transmitted to the horizontal connecting plate 71, and the function of the extension hardware 7 is increased. Will not be fulfilled.

  On the other hand, since the horizontal connecting plate 71 can be firmly fixed to the upper frames 11 and 31 by providing the notches 71b as in the extension hardware 7 of the present embodiment, the tensile force between the units can be increased. It can be transmitted to the horizontal connecting plate 71 via the upper frames 11 and 31.

  And in the extension structure S of this Embodiment, the horizontal connection board 71 is the lower surface of the upper frame 31 which is the horizontal member of the uppermost part of the wall of the existing unit 3, and the horizontal member of the uppermost part of the wall of the extension unit 1. It is installed across the lower surface of a certain upper frame 11.

  Further, the vertical connecting plate 72 is installed across the vicinity of the upper end of the vertical frame 32 that is the vertical member of the wall of the existing unit 3 and the vicinity of the upper end of the vertical frame 12 that is the vertical member of the wall of the extension unit 1. .

  Therefore, it is possible to obtain the required strength by attaching the extension hardware 7 at a high position, and the existing side with the existing unit 4 on the second floor placed on the existing unit 3 on the first floor. Can be connected to the extension side.

  That is, since the positions of the lower surfaces of the upper frames 11 and 31 are farthest from the ground in the extension unit 1 and the existing unit 3, if the extension hardware 7 for connection is installed at this position, it is most efficient. A tensile force can be borne.

  In addition, the horizontal connecting plate 71 is attached to the lower surfaces of the upper frames 11 and 31, and the vertical connecting plate 72 is attached to the side surfaces near the upper ends of the vertical frames 12 and 32, thereby eliminating the need to remove the existing unit 4 on the second floor. .

  In this way, if it is not necessary to remove the existing unit 4 on the second floor, connection or wiring between the existing unit 4 on the second floor and the existing unit 4 on the surrounding second floor is removed or reattached. There is no need for trouble. Therefore, construction time and costs can be greatly reduced.

  Moreover, in the extension structure S of this Embodiment, the horizontal connection board 71 straddles the lower surface of the upper frame 31 of the wall panel 36 of the existing unit 3 and the lower surface of the upper frame 11 of the wall panel 16 of the extension unit 1. While being installed, the vertical connecting plate 72 is installed across the vicinity of the upper end of the vertical frame 32 of the wall panel 36 of the existing unit 3 and the vicinity of the upper end of the vertical frame 12 of the wall panel 16 of the extension unit 1.

  Accordingly, since the upper frames 31 and 11 and the vertical frames 32 and 12 which are the structural materials of the wall panels 36 and 16 are connected to each other, the wall panels 36 and 16 can be firmly connected to each other. 3 and the extension unit 1 can be firmly connected.

  That is, in general, in the frame wall construction method, since the rigidity of the wall panels 36 and 16 is extremely large, it is a basic unit of the structure. However, in the extension structure S of the present embodiment, the wall panels 36 and 16 are connected to each other. The extension hardware 7 is firmly connected.

  The adjacent wall panels 36 and 16 are firmly connected to the other wall panels 36 and 16 of the existing unit 3 and the extension unit 1, respectively. As a result, the existing unit 3 and the extension unit 1 are connected to each other. It will be firmly connected.

  Therefore, it is possible to construct a unit building U having a structure that is strong against seismic loads.

  Further, in the extension method of the present embodiment, a part of the outer wall surface material 34 of the existing unit 3 is removed, and the outer wall panel 16 of the extension unit 1 is installed in parallel to the outer wall panel 36 of the existing unit 3. A horizontal connecting plate 71 is installed across the upper frame 31 that is the horizontal member of the outer wall panel 36 of the building unit 3 and the upper frame 11 that is the horizontal member of the outer wall panel 16 of the extension unit 1, and the outer wall of the existing unit 3 A vertical connecting plate 72 is installed across the vertical frame 32 that is a vertical member of the panel 36 and the vertical frame 12 that is a vertical member of the outer wall panel 16 of the extension unit 1, and the inner wall material is attached to the extension unit 1. And

  Therefore, the existing units 3 and 4 and the extension units 1 and 2 can be connected to each other by simple construction while the second-floor existing unit 4 that is the upper floor portion of the first-floor existing unit 3 is placed. Can be linked.

  And, if the existing side and the extension side can be connected by this simple construction, the labor is reduced and the construction time is shortened, and the crane work can be reduced. Is possible.

  In addition, since the accompanying work such as removal and installation of wiring and piping can be omitted, it can be said that the effect of overall process shortening and cost reduction is extremely great.

  Further, in the extension hardware 7 of the present embodiment, the horizontal connecting plate 71 and the vertical connecting plate 72 are integrally formed by bending one metal plate at a substantially right angle.

  Accordingly, since the flanges and the webs are reinforced with each other, the flanges and the webs resist the deformation that causes the upper frames 31 and 11 and the vertical frames 32 and 12 to be displaced. be able to.

  Hereinafter, the extension structure S1 including the extension hardware 7A in a form different from that of the above-described embodiment will be described with reference to FIG.

  The description of the same or equivalent parts as those described in the above embodiment will be given the same reference numerals.

  In the present embodiment, unlike the above-described embodiment, a case where the vertical connection plates 72 and 72 are provided on both sides of the horizontal connection plate 71 will be described.

  First, in terms of configuration, the extension structure S1 including the extension hardware 7A of the present embodiment is adjacent to the wall panel 36 of the existing unit 3 on the first floor and arranged substantially parallel to the wall panel 36. The extension hardware 7A is installed across the wall panel 16 of the extension unit 1 on the floor to form the extension structure S1.

  The extension hardware 7 </ b> A is formed in a plate shape with metal, and the vertical connection plate 72, the horizontal connection plate 71, and the vertical connection plate 72 are formed so that both ends of one metal plate are bent at substantially right angles. And is configured in a U-shape as a whole.

  Of the two vertical connecting plates 72, 72, one vertical connecting plate 72 is formed by bending one end of the above-described horizontal connecting plate 71 at a substantially right angle. An inner surface near the upper end of the vertical frame 32 of the existing unit 3 on the floor, and an inner surface near the upper end of the vertical frame 12 of the extension unit 1 on the first floor formed on the same plane as the inner surface of the vertical frame 32; , And is fixed by nails 82...

  The other vertical connecting plate 72 is formed by bending the other end of the horizontal connecting plate 71 opposite to the one vertical connecting plate 72 at a substantially right angle, and the outer surface of the plate is the one described above. Near the upper end of the vertical frame 12 of the extension unit 1 on the first floor formed on the same plane as the inner side surface of the other vertical frame 32 and the inner side surface near the upper end of the other vertical frame 32 facing the vertical frame 32 And are fixed by nails 82,...

  As described above, the extension hardware 7 </ b> A of the present embodiment includes the vertical connection plate 72, the horizontal connection plate 71, and the vertical connection plate 72.

  Therefore, even when the length is still insufficient by the extension hardware 7 of the above embodiment, which is bent in an L shape and includes one horizontal connecting plate 71 and one vertical connecting plate 72, the necessary length Extension hardware 7A can be formed.

  Further, even when the extension metal piece 7 of the above embodiment has a sufficient length, if the extension metal piece 7A of this example is used, the extension cross section of the extension metal piece 7A has a higher structure. This is advantageous in calculation.

  Other configurations and operational effects are substantially the same as those in the above-described embodiment, and thus the description thereof is omitted.

  The preferred embodiments and examples of the present invention have been described in detail with reference to the drawings, but the specific configuration is not limited to the embodiments or examples, and does not depart from the gist of the present invention. A degree of design change is included in the present invention.

  For example, in the present embodiment and examples, the case where the unit building U of the frame wall construction method is added as a building has been described, but the present invention is not limited to this, and any building such as a conventional shaft construction method can be used. It can also be applied to extension.

  Moreover, in this Embodiment and the Example, although the case where the notch part 71b was provided in the extension metal fittings 7 and 7A was demonstrated, it is not limited to this, The notch part 71b is not provided. Also good.

  Further, in the present embodiment and examples, the case where the horizontal connecting plate 71 is installed on the upper frames 11 and 31 which are the uppermost horizontal members has been described. However, the present invention is not limited to this, and other uppermost parts. You may install in a horizontal member which is not.

  Similarly, in the present embodiment and examples, the case where the vertical connecting plate 72 is installed in the vicinity of the upper ends of the vertical frames 12 and 32 that are vertical members has been described. However, the present invention is not limited to this, and the horizontal connecting plate is used. When 71 is installed on a horizontal member that is not the uppermost part, it may be installed between the vertical members.

  And in this Embodiment and the Example, although the case where the hardware 7 for extension was installed in the location A and B which adjoins the outer peripheral part of the unit building U was demonstrated, it is not limited to this, A bearing wall As long as it is installed, it may be installed at any position.

It is a perspective view explaining the structure of the hardware for extension of the best embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view illustrating an overall configuration of a unit building including extension hardware according to the best mode of the present invention, omitting some building units. It is an exploded view which decomposes | disassembles and demonstrates the structure of a building unit. It is sectional drawing explaining the structure of the hardware for extension of the best embodiment of this invention. (A) is sectional drawing which cut | disconnected the building in the horizontal direction and was seen from the downward direction, (b) is sectional drawing which was cut | disconnected in the perpendicular direction and was seen from the side. It is a perspective view explaining the installation location of the extension hardware of the best embodiment of the present invention. (A) is a connecting part of the first floor part, and (b) is a connecting part of the second floor part. It is explanatory drawing explaining the order of the extension method using the extension hardware of the best embodiment of this invention. (A) is a state before removing the outer wall material on the existing side, and (b) is a state after removing. It is explanatory drawing explaining the order of the extension method using the extension hardware of the best embodiment of this invention. (A) is the state which has attached the extension hardware, (b) is the state after attachment. It is a perspective view explaining the structure of the hardware for extension of the Example of this invention.

Explanation of symbols

U unit building S, S1 extension structure 1 extension unit on the first floor (extension side)
2 2nd floor extension unit (extension side)
3 Existing unit on the 1st floor (existing side)
4 Second-floor existing unit (existing side)
11, 21, 31 Upper frame (transverse member)
12, 32 Vertical frame (vertical member)
33 Inner wall material 14, 34, 44 Outer wall material 16, 36 Wall panel 7, 7A Extension hardware 71 Horizontal connection plate 72 Vertical connection plate 71a, 72a Nail hole 71b Notch portion 81 Joint bolt 82 Nail

Claims (5)

It is an extension structure equipped with extension hardware that connects the existing side and the extension side when the building is extended,
The extension hardware includes a lateral connecting plate installed across the existing lateral member and the additional lateral member, and an existing vertical member and an additional vertical member on both sides of the lateral connecting plate. A vertical connecting plate installed across the
The lateral connecting plate is installed across the lower surface of the uppermost lateral member of the wall on the existing side and the lower surface of the uppermost lateral member of the wall on the extension side,
The extension structure is characterized in that the vertical connection plate is installed across the vicinity of the upper end of the vertical member of the wall on the existing side and the upper end of the side of the vertical member of the extension wall. The notch part corresponding to the position of the volt | bolt for attaching another structure to the said existing horizontal member or the said additional member is provided in the said horizontal connection board. The extension structure described. The building is a building of a wall type construction method including a floor panel and a wall panel,
The lateral connecting plate is installed across the lower surface of the upper frame of the existing side wall panel and the lower surface of the upper frame of the additional side wall panel,
The extension structure according to claim 1 or 2 , wherein the vertical connecting plate is installed across the vicinity of the upper end of the vertical frame of the existing side wall panel and the vicinity of the upper end of the vertical frame of the additional side wall panel. An extension method using extension hardware that connects the existing side and the extension side when the building is extended ,
The extension hardware includes a lateral connecting plate installed across the existing lateral member and the additional lateral member, and an existing vertical member and an additional vertical member on both sides of the lateral connecting plate. A vertical connecting plate installed across the
Remove a part of the outer wall material of the existing building,
Install the outer wall of the extension building parallel to the outer wall of the existing building,
The lateral connecting plate is installed across the lateral member of the outer wall on the existing side and the lateral member of the outer wall on the extension side, and Install the vertical connecting plate,
An extension method comprising attaching an inner wall surface material to the extension side building. The notch part corresponding to the position of the bolt for attaching another structure to the side member on the existing side or the side member on the extension side is provided in the horizontal connecting plate. 4. The extension method according to 4.

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