JP6671035B2 - Building unit and its manufacturing method - Google Patents

Description

  The present invention relates to a building unit constituting a part of a building and a method of manufacturing the same.

  Generally, all construction of a building such as a house is performed at a construction site (building site) of the building. For example, in the case of a wooden house, at the construction site, after the construction of the concrete foundation, on the concrete foundation, construction of columns, beams, etc. constituting the framework of the house, floors, walls, etc. are performed, and thereafter water Equipment work for housing equipment (equipment and equipment) such as equipment and electrical equipment is implemented.

  Residential equipment installed at a construction site may cause variations in construction accuracy, and may further increase the construction period. On the other hand, for example, in Patent Literature 1, in order to provide high-quality equipment units at a low cost, equipment units including a bathroom, a toilet, a washing place, a kitchen, and the like are factory-produced and installed at a building site. Techniques are disclosed.

JP-A-2-232445

  When installing an equipment unit at a construction site, the equipment unit is lifted and placed on a foundation. In this case, when the equipment unit is lifted, the equipment unit may be deformed or damaged due to the weight of the equipment.

  Therefore, an object of the present invention is to provide a building unit with increased strength and a method for manufacturing the same.

  In order to achieve the above object, a building unit according to one embodiment of the present invention is a building unit which is part of a building and is pre-assembled at a building site other than a building site, and a mortise is provided on a lower end surface. A column, a first horizontal member that contacts the end surface of the column and supports the column, and a column base fitting that connects and fixes a lower portion of the column and the first horizontal member, The first horizontal member is provided with a concave portion that is recessed upward from a lower surface, and a first through hole that penetrates the upper surface of the concave portion and is connected to the mortise hole. A pedestal portion thinner than the thickness of the horizontal member and housed in the concave portion, and a tenon portion protruding upward from an upper surface of the pedestal portion and inserted into the first through hole and the mortise hole.

  Further, the method for manufacturing a building unit according to one embodiment of the present invention is a method for manufacturing a building unit forming a part of a building, wherein the recess penetrates upward from a lower surface and penetrates an upper surface of the concave portion. A column base fitting including a pedestal portion thinner than the thickness of the transverse member, and a tenon portion protruding from above the pedestal portion and longer than the through hole, in the through hole of the transverse member provided with the through hole. Inserting the mortise portion and storing the pedestal portion in the recess, and inserting the mortise portion that has penetrated the through-hole into the mortise hole of a column having a mortise hole in a lower end surface. And a step of performing.

  According to the present invention, it is possible to provide a building unit with increased strength and a method for manufacturing the same.

It is a perspective view of the building unit which concerns on embodiment. It is sectional drawing of the 1st unit which comprises the 1st floor of the building unit which concerns on embodiment along the II-II line of FIG. It is sectional drawing of the 2nd unit which comprises the 2nd floor of the building unit which concerns on embodiment in the III-III line of FIG. It is a perspective view which shows the shaft set of the 1st unit which concerns on embodiment. It is a perspective view showing the lower part of the pillar with which the building unit concerning an embodiment is provided. It is a perspective view showing the neighborhood of a crevice of a foundation with which a building unit concerning an embodiment is provided. It is a perspective view showing the end of another foundation with which the building unit concerning an embodiment is provided. It is a perspective view of the column base metal fitting with which the building unit concerning an embodiment is provided. It is a top view of the metal fitting main body of the column base metal fitting concerning embodiment. It is a front view of the metal fitting main body of the column base metal fitting concerning an embodiment. It is a left view of the metal fitting main body of the column base metal fitting concerning embodiment. It is a perspective view which shows the process of fixing the metal fittings main body and a base of a pillar base metal fitting in the manufacturing method of the building unit which concerns on embodiment. It is a perspective view which shows the process of fixing the metal main part of a column base metal and another base in the manufacturing method of the building unit which concerns on embodiment. It is a perspective view which shows the process of fixing the metal main part of a pillar base metal fitting, and a pillar in the manufacturing method of the building unit which concerns on embodiment.

  Hereinafter, a building unit and a method of manufacturing the same according to an embodiment of the present invention will be described in detail with reference to the drawings. Each of the embodiments described below shows a specific example of the present invention. Therefore, numerical values, shapes, materials, constituent elements, arrangement and connection forms of constituent elements, steps, order of steps, and the like shown in the following embodiments are merely examples, and do not limit the present invention. Therefore, among the components in the following embodiments, components that are not described in the independent claims that represent the highest concept of the present invention are described as arbitrary components.

  In addition, each drawing is a schematic diagram, and is not necessarily strictly illustrated. Therefore, for example, the scales and the like do not always match in each drawing. Further, in each of the drawings, substantially the same configuration is denoted by the same reference numeral, and redundant description will be omitted or simplified.

(Embodiment)
[Building unit]
First, an outline of the building unit 1 according to the present embodiment will be described with reference to FIG. FIG. 1 is a perspective view of a building unit 1 according to the present embodiment.

  The building unit 1 forms a part of a building. The building unit 1 is a core unit serving as a core when building a building. Around the building unit 1, an entrance, a living room, and the like are constructed at a building site. The building is, for example, a house, but may be a non-house, such as a store, a factory, or a warehouse. The building is, for example, two stories or more, but may be one story (one-story) or may have a basement.

  The building unit 1 according to the present embodiment is a water-running core unit in which most of the water-running facilities necessary for a house are integrated. By consolidating most of the water supply facilities into the building unit 1, a large living space can be secured even in a small house.

  In the present embodiment, the shape of the building unit 1 is substantially a rectangular parallelepiped, and at least one side is an outer wall of the building. The building unit 1 is connected and fixed to a foundation 2 as shown in FIG. The foundation 2 is, for example, a cloth foundation or a solid foundation formed of concrete, reinforcing steel, or the like, and an anchor bolt (not shown) protrudes upward from the upper surface. The building unit 1 is fixed to the foundation 2 by fastening the anchor bolts to the column base fitting 200.

  In the present embodiment, the building unit 1 includes one or more units. The building unit 1 is, for example, a housing unit that forms a part of a two-story or more house, and is formed by stacking a plurality of units that make up each of a plurality of floors. Specifically, as shown in FIG. 1, the building unit 1 includes two units including a first unit 10 and a second unit 20.

  The first unit 10 is a unit that constitutes one of the floors. In the present embodiment, the first unit 10 forms the first floor of a building. The second unit 20 is a unit that constitutes the floor immediately above the first unit 10. In the present embodiment, the second unit 20 forms the second floor of the building.

  Each of the first unit 10 and the second unit 20 is assembled in advance at a site other than a building site such as a factory. That is, each of the first unit 10 and the second unit 20 is an industrialized unit in which various facilities are previously installed in a factory or the like. By factory production, a high-quality and high-performance unit can be manufactured, and the construction period at a building site can be shortened.

  Each of the first unit 10 and the second unit 20 assembled (produced) in the factory is transported to the building site by a transport vehicle such as a truck. The transported first unit 10 and second unit 20 are stacked at a construction site and connected and fixed to each other. In addition, if transport is possible, for example, when the height of the truck is within the allowable range of the height limit, the first unit 10 and the second unit 20 may be connected and fixed at a factory or the like, and then transported to a construction site.

  The first unit 10 and the second unit 20 have substantially the same size as each other. Each of the first unit 10 and the second unit 20 is designed to have a height that does not exceed the height limit of the Road Traffic Act when placed on a carrier of a transport vehicle such as a truck. As an example, each of the first unit 10 and the second unit 20 has a planar size of 4655 mm × 1925 mm and a height of 2700 mm.

  Each of the first unit 10 and the second unit 20 is formed by a wooden frame construction method. Specifically, each of the first unit 10 and the second unit 20 includes a plurality of columns, a horizontal member, a face member, and the like. The detailed configuration of each unit will be described later.

[Facility]
In the present embodiment, the building unit 1 includes equipment. The facility is, specifically, a house facility, and includes, for example, a water supply facility, an electrical facility, an air conditioning facility, and the like. Each facility is installed in advance on at least one of one or more units constituting the building unit 1 except at a building site.

  The water supply facility includes, for example, at least one of a bath (bathroom), a toilet, a sink, and a kitchen. The water supply facility may further include a water heater (a hot water supply system), and a water distribution pipe (a drain pipe, a water supply pipe, and a hot water pipe) installed in a pipe space formed under the ceiling, under the floor, or in the wall. .

  FIG. 2 is a cross-sectional view of the first unit 10 constituting the first floor of the building unit 1 according to the present embodiment along the line II-II in FIG. FIG. 3 is a cross-sectional view of the second unit 20 constituting the second floor of the building unit 1 according to the present embodiment along the line III-III in FIG. 2 and 3 are schematic diagrams for explaining an example of the water supply facilities provided in the building unit 1, and there is a point that they do not always coincide with those in FIG.

  In the present embodiment, as shown in FIG. 2, a toilet 31 and a wash basin 32 are installed inside the first unit 10. Further, inside the first unit 10, a space 33 in which equipment can be arranged is provided. In the space 33, for example, a power outlet is arranged, and the space 33 can be used as a pantry in which a refrigerator or the like for storing food is installed.

  As shown in FIG. 3, a toilet 31, a wash basin 32, and a unit bath 34 are installed inside the second unit 20. Although not shown, various water distribution pipes are provided in a space between the first unit 10 and the second unit 20 or the like.

  The electrical equipment includes, for example, a distribution board, an information panel, an operation panel for operating various types of equipment, a cooperative storage device (cooperative storage system), and equipment such as lighting. The electrical equipment may further include wiring equipment such as switches, outlets, and wiring (information wiring, electric wiring). Distribution boards, information panels, operation panels, cooperative storage devices, switches, outlets, etc. are located indoors. The various wirings are arranged under the ceiling, under the floor, or in the wall.

  The air conditioner includes, for example, an air conditioner indoor unit such as an air conditioner installed indoors, a heat exchanger installed behind a ceiling, and the like. The air conditioner may further include various pipes such as a duct installed in the pipe space.

  Note that the number and arrangement of the facilities shown in FIGS. 2 and 3 are merely examples, and are not particularly limited. For example, in the present embodiment, an example has been described in which both the first unit 10 and the second unit 20 are provided with a water-supplying facility, but only the first unit 10 (or only the second unit 20) is provided with a water-supplying facility. May be provided. The building unit 1 may not include the second unit 20 but may include only the first unit 10.

[unit]
Then, the 1st unit 10 and the 2nd unit 20 which comprise the building unit 1 are demonstrated. Each of the first unit 10 and the second unit 20 includes, for example, an architectural structure as a frame structure by a wooden frame method. The building structure is provided with a shaft set made of a building material such as a horizontal member such as a beam and a pillar, and a floor set made of a building material such as a pull-out or a joist. The building structure is pre-assembled at a site other than a building site such as a factory.

  1 and 2, the first unit 10 includes a plurality of columns 11, a plurality of bases 12 to 14, and a column base 200. Although a detailed description is omitted, the first unit 10 includes a stud, a base material, an interior material, an exterior material, and the like. The base material, the interior material, or the exterior material constitutes a floor, a wall, a ceiling, and the like of the first unit 10. In addition, although not shown, the first unit 10 is further provided with pulling, joist, bracing, field margin, and the like.

  The second unit 20 has the same configuration as the first unit 10. Although detailed description is omitted, as shown in FIGS. 1 and 3, the second unit 20 includes a plurality of columns, a plurality of horizontal members, studs, a base material, an interior or exterior material, It is equipped with joists, braces, and field ties.

  Hereinafter, the detailed configuration of the first unit 10 will be described with reference to the drawings.

[First unit]
FIG. 4 is a perspective view showing a shaft assembly of the first unit 10 according to the present embodiment. Specifically, FIG. 4 illustrates the plurality of columns 11, the plurality of bases 12 to 14, and the column base metal fitting 200 included in the first unit 10, and includes other building materials such as face materials and the inside. The equipment to be arranged is not shown.

  In the present embodiment, the first unit 10 includes, for example, twelve columns 11, but in FIG. 4 (similar in other drawings), not all columns 11 are denoted by reference numerals. Some pillars do not have reference numerals. The same applies to the column base fitting 200.

  In addition, the first unit 10 does not include a beam on the ceiling side (specifically, a trunk or a second floor beam). As shown in FIG. 1, a beam on the floor of the second unit 20 is connected to an upper part of the plurality of columns 11 of the first unit 10 as a beam on the ceiling of the first unit 10.

[Pillar]
The plurality of pillars 11 are vertical members of the first unit 10 and extend in a vertical direction (vertical direction). Each of the plurality of columns 11 is formed of, for example, wood, and specifically, is formed of a square bar having a substantially square cross section. In the present embodiment, the sizes and shapes of the plurality of columns 11 are substantially the same.

  FIG. 5 is a perspective view showing a lower portion of the pillar 11 according to the present embodiment. Specifically, FIG. 5 shows the lower part of the pillar 11 as viewed from below.

  As shown in FIG. 5, the pillar 11 is provided with a mortise hole 111 in the lower end face 110. The tenon hole 111 is a hole for inserting the tenon part 220 (see FIG. 8) of the column base metal fitting 200. By inserting the tenon part 220 of the column base metal fitting 200 into the tenon hole 111, the column 11 and the base 12 are fixed.

  The mortise hole 111 is, for example, a cylindrical hole that is recessed along the longitudinal direction (z-axis direction) of the column 11 and has a depth equal to or greater than the length of the mortise part 220. The mortise hole 111 is provided with one or more through holes for inserting fixtures such as pins and bolts. In the present embodiment, three through holes 112a to 112c penetrating the column 11 are provided along the short direction (x-axis direction and y-axis direction) of the column 11. Each of the three through holes 112 a to 112 c is a through hole having a circular cross section, and intersects with the mortise hole 111. In the present embodiment, as shown in FIG. 5, the penetration direction (x-axis direction) of the middle through-hole 112b is substantially the same as the penetration direction (y-axis direction) of the upper through-hole 112a and the lower through-hole 112c. Are orthogonal. The penetration direction and the shape of the three through holes 112a to 112c are not particularly limited.

[Base]
Each of the bases 12 to 14 shown in FIG. 4 is an example of a horizontal member provided in the first unit 10 and functions as a base of a building. The base 12 is an example of a first horizontal member provided with a concave portion 120 for accommodating the pedestal portion 210 (see FIG. 8) of the column base metal fitting 200. The base 12 extends in the longitudinal direction of the first unit 10. The bases 13 and 14 are examples of a second horizontal member located on the side of the base 12. The bases 13 and 14 extend in the short direction of the first unit 10. The base 14 is also an example of a first horizontal member, and has a recess 120.

  The bases 12 to 14 are each placed on the foundation 2. Each of the bases 12 to 14 is formed of, for example, wood, and specifically, is formed of a square bar having a substantially square cross section. Each of the bases 12 to 14 is formed of, for example, one square bar.

  The base 12 contacts the end surface 110 of the pillar 11 and supports the pillar 11. In the present embodiment, as shown in FIG. 4, the base 12 extends from one end to the other end in the longitudinal direction of the first unit 10, and supports the plurality of columns 11 on the upper surface 12a. In the example shown in FIG. 4, four pillars 11 are placed on the upper surface 12 a such that the respective end surfaces 110 (see FIG. 5) and the upper surface 12 a are in contact with each other, and are supported by the base 12.

  FIG. 6 is a perspective view showing the vicinity of the concave portion 120 of the base 12 according to the present embodiment. As shown in FIG. 6, the base 12 is provided with a recess 120 and a through hole 123. As shown in FIG. 4, the base 12 is provided with the same number of recesses 120 and through holes 123 as the number of columns 11 supported by the base 12.

  The recess 120 is a recess that is recessed upward from the lower surface 12 b of the base 12. In the present embodiment, the concave portion 120 is a groove cut out along the short direction (y-axis direction) of the base 12. As shown in FIG. 6, the recess 120 has a first storage section 121 and a second storage section 122.

  The first storage part 121 is a main part of the concave part 120 and is a part for storing a part of the pedestal part 210 except the bottom plate 211 (see FIG. 8). The first storage portion 121 forms a substantially rectangular parallelepiped space in which a lower surface and two side surfaces facing each other along the y-axis direction are opened, and the top plate 212 and the side plate 213 of the pedestal portion 210 are formed in the space. To 215 (see FIG. 8) are stored.

  The first storage section 121 has an upper surface 121a corresponding to the bottom surface of the recess 120. When the pedestal portion 210 is stored in the concave portion 120, the top plate 212 of the pedestal portion 210 comes into contact with the upper surface 121a. Specifically, the shape and size of the upper surface 121a are substantially the same as the upper surface 210a of the top plate 212 of the pedestal 210.

  The second storage section 122 is a section for storing the bottom plate 211 of the pedestal section 210. The second storage portion 122 forms a flat space having an open lower surface and two side surfaces facing each other along the y-axis direction, and the bottom plate 211 is stored in the space. The shape and size of the second storage section 122 are substantially the same as the bottom plate 211 of the pedestal section 210. When the pedestal portion 210 is stored in the concave portion 120, the extending portion 218 (see FIG. 8) of the bottom plate 211 contacts the upper surface 122 a of the second storage portion 122.

  The through hole 123 is an example of a first through hole that penetrates the upper surface 121 a of the recess 120 and is connected to the mortise hole 111. The through hole 123 is substantially the same as the shape of the mortise 220 of the column base fitting 200, and is a cylindrical through hole having a substantially circular cross section. The through-hole 123 penetrates from the upper surface 121 a of the concave portion 120 to the upper surface 12 a of the base 12.

  The through-hole 123 is provided, for example, substantially at the center of the base 12 in the lateral direction (y-axis direction). Specifically, the through-hole 123 is provided substantially at the center of the upper surface 121a of the recess 120 in plan view.

  The bases 13 and 14 are sandwiched between the two bases 12, as shown in FIG. The base 13 does not support the column 11, whereas the base 14 supports the column 11. For this reason, the concave portion 120 is not provided in the base 13, and the concave portion 120 is provided in the base 14. In the example shown in FIG. 4, the bases 14 are provided at both ends in the longitudinal direction of the base 12, but any of the bases 13 and 14 can be appropriately arranged according to the arrangement of the columns 11.

  FIG. 7 is a perspective view showing an end of the base 13 provided in the building unit 1 according to the present embodiment. Here, the end of the base 13 will be described as an example, but the end of the base 14 has a similar structure.

  As shown in FIG. 7, the base 13 is provided with a recess 130 and an insertion hole 131. In the present embodiment, a concave portion 130 and an insertion hole 131 are provided at both ends of the base 13.

  The recess 130 is a recess recessed upward from the lower surface 13 b of the base 13. In the present embodiment, the concave portion 130 is a notch in which a corner on the lower surface side of the base 13 is cut out along the short direction (x-axis direction).

  The recess 130 is a recess for avoiding the extension 218 of the bottom plate 211 of the column base 200 provided on the base 12 adjacent to the base 13. The thickness of the recess 130 (in the z-axis direction) is substantially the same as the thickness of the extension 218. When the base 13 is disposed separately from the base 12, the extension 218 is disposed in the recess 130, and the lower surface (the lower surface 210 b) of the extension 218 and the lower surface 13 b of the base 13 are substantially flush.

  The insertion hole 131 is an insertion hole into which the protrusion 230 (see FIG. 8) of the column base metal fitting 200 is inserted. The insertion hole 131 is, for example, a cylindrical through hole having a substantially circular cross section, and penetrates from the upper surface 130 a of the recess 130 to the upper surface 13 a of the base 13. The protrusion 230 is inserted from below the insertion hole 131, and the seat nut 203 (see FIG. 8) is inserted from above.

  The insertion hole 131 has a counterbore portion 132 for inserting the seat nut 203 on the upper surface 13 a side of the base 13. The counterbore portion 132 is a concave portion (step portion) that is recessed downward from the upper surface 13a of the base 13 so as to match the size and shape of the seat nut 203. Since the seat nut 203 is stored in the counterbore portion 132, the seat nut 203 and the third extension portion 218 c sandwich the base 13. Thereby, the base 13 can be fixed to the column base fitting 200.

  Note that the insertion hole 131 is provided such that the end surface 133 of the base 13 abuts on the side surface of the base 12 when the protruding portion 230 of the column base 200 fixed to the base 12 is inserted. Specifically, the insertion hole 131 is provided substantially at the center in the short direction of the base 13, and the distance from the end surface 133 in the long direction is the distance from the top plate 212 of the column base 200 to the protrusion 230. Is provided at a position substantially equal to.

[Pillar bracket]
The column base metal fitting 200 is provided corresponding to each of the plurality of columns 11. That is, the first unit 10 includes the column base metal fittings 200 in the same number as the plurality of columns 11. The pillar base 200 connects and fixes the lower part of the pillar 11 and the base 12. In the present embodiment, the column base metal fitting 200 further connects and fixes the base 12 and the base 13 or 14.

  Hereinafter, a detailed configuration of the column base fitting 200 will be described. FIG. 8 is a perspective view of the column base metal fitting 200 included in the building unit 1 according to the present embodiment. As shown in FIG. 8, the column base fitting 200 includes a fitting main body 201, a plurality of pins 202, a seat nut 203, and a plurality of screws 204.

  The metal fitting body 201 is a main body of the column base metal fitting 200. 9 to 11 are a top view, a front view, and a left side view, respectively, of the bracket main body 201 of the column base bracket 200 according to the present embodiment. As shown in FIGS. 9 to 11, the metal fitting body 201 includes a pedestal part 210, a tenon part 220, and a protruding part 230.

  The pedestal portion 210 is thinner than the thickness of the base 12 and is accommodated in the recess 120 of the base 12. As shown in FIG. 8, the pedestal portion 210 includes a bottom plate 211, a top plate 212, and side plates 213 to 215. A space 216 is formed in the pedestal portion 210 by the bottom plate 211, the top plate 212, and the side plates 213 to 215.

  The bottom plate 211 is a flat plate that is connected and fixed to the foundation 2. As shown in FIGS. 8 to 11, a through hole 217 is provided in the bottom plate 211. The through hole 217 is an example of a second through hole connected to the space 216. Bolts (anchor bolts) provided on the foundation 2 are inserted into the through holes 217. The tip of the bolt is located in the space 216, and the bottom plate 211 (the column base metal fitting 200) is fixed to the foundation 2 by fastening the bolt with a fastener such as a nut.

  The top plate 212 is a flat plate supported by the two side plates 213 and 214. In the present embodiment, the top plate 212 is further supported by the side plate 215. The plan view shape of the top plate 212 is substantially rectangular.

  A mortise part 220 inserted into the mortise hole 111 of the pillar 11 is provided on the upper surface 210 a of the top plate 212. The upper surface 210a of the top plate 212 contacts the upper surface 121a of the concave portion 120 when the pedestal portion 210 is stored in the concave portion 120 of the base 12.

  Each of the side plates 213 to 215 is a substantially rectangular flat plate. The side plates 213 to 215 are erected on the bottom plate 211. For example, as shown in FIG. 9, the side plates 213 to 215 are erected on the bottom plate 211 so as to be substantially U-shaped in plan view. Specifically, the side plates 213 and 214 are substantially parallel and face each other. The side plate 215 is connected to each end of the side plate 213 and the side plate 214, and is disposed substantially at right angles to each.

  The space 216 is a substantially rectangular parallelepiped space having at least one surface opened. Specifically, the surface of the space 216 facing the side plate 215 is open. In addition, the pedestal 210 may not include the side plate 215. In this case, the space 216 is a space in which two surfaces facing each other are open.

  In the present embodiment, as shown in FIGS. 8 to 11, bottom plate 211 has extension 218 that extends outside top plate 212 in plan view. As shown in FIG. 9, the extending portion 218 extends outward from three sides of the top plate 212, and the shape of the extending portion 218 in a plan view is substantially U-shaped. Specifically, the extending portion 218 has a first extending portion 218a, a second extending portion 218b, and a third extending portion 218c. The first extension portion 218a is located outside the side plate 213 in a plan view, and has a substantially rectangular shape in a plan view. The second extending portion 218b is located outside the side plate 214 in a plan view, and has a substantially rectangular shape in a plan view. The third extending portion 218c is located outside the side plate 215 in plan view, and is a substantially trapezoidal portion in plan view. The planar shape of the bottom plate 211 is a shape in which two adjacent corners are obliquely cut out (substantially hexagonal shape).

  In the present embodiment, as shown in FIGS. 8 to 11, the extending portion 218 is provided with a through hole 219. The through hole 219 is a hole into which the screw 204 is inserted, and penetrates the bottom plate 211 (extended portion 218) in the thickness direction (z-axis direction). Specifically, a total of four through holes 219 are provided in each of the first extension portion 218a and the second extension portion 218b of the extension portion 218. The number and positions of the through holes 219 are not limited to this.

  The shape of the base 210 is not limited to the illustrated example. For example, the pedestal portion 210 may not include the side plate 215, and the two side plates 213 and 214 may be arranged in a substantially V shape in plan view. In this case, the plan view shape of the top plate 212 may be a triangle, and the space 216 may be a substantially triangular prism-shaped space.

  The tenon part 220 protrudes upward from the upper surface 210 a of the pedestal part 210. More specifically, the tenon part 220 protrudes upward from the upper surface 210 a of the top plate 212. The tenon 220 is inserted into the through hole 123 of the base 12 and the tenon 111 of the pillar 11. The tenon 220 is longer than the through hole 123 of the base 12. Therefore, the tenon 220 inserted into the through hole 123 protrudes upward from the through hole 123 when the pedestal 210 is housed in the recess 120.

  In the present embodiment, the tenon part 220 is a cylindrical part having one or more through holes on the side surface. For example, as shown in FIGS. 8, 10, and 11, the tenon portion 220 is provided with three through holes 221a to 221c. The three through holes 221a to 221c are arranged side by side in the vertical direction. The through direction of the middle through hole 221b is substantially perpendicular to the through directions of the upper through hole 221a and the lower through hole 221c. The pin 202 is inserted into each of the three through holes 221a to 221c with the column 11 connected to the tenon 220.

  The protruding portion 230 is a rod-shaped protruding portion (pin) protruding upward from the extending portion 218. The height (the length in the z-axis direction) of the protrusion 230 is, for example, substantially the same as the base 12. That is, as shown in FIG. 11, the protrusion 230 protrudes from the upper surface of the bottom plate 211 to a position higher than the upper surface 210 a of the top plate 212.

  In the present embodiment, the protruding portion 230 is provided on the third extending portion 218c, but is not limited to this. The protruding portion 230 may be provided on the first extending portion 218a or the second extending portion 218b. In addition, the protrusion 230 may not be provided when the base 13 or the base 14 does not need to be connected. For example, one of the column base fittings 200 (fixed to the back base 12) shown in FIG. 4 is a column base fitting without the protrusion 230.

  A male screw 231 that is screwed into a female screw provided on the seat nut 203 is provided at the tip of the protruding portion 230. The base 13 is fixed to the column base 200 by inserting the protrusion 230 into the insertion hole 131 shown in FIG. 7 and screwing the seat nut 203 into the male screw 231.

  The metal fitting body 201 is formed from iron or an alloy such as stainless steel or carbon steel. Specifically, the metal fitting body 201 is formed by welding the bottom plate 211, the top plate 212, the side plates 213 to 215, the tenon part 220, and the protruding part 230 to each other.

  The plurality of pins 202 are an example of a fixture, and are members for connecting and fixing the column base fitting 200 and the column 11. Specifically, the plurality of pins 202 are inserted into the through holes 112 a to 112 c of the column 11 and the through holes 221 a to 221 c of the tenon 220 of the column base fitting 200. The size and shape of the plurality of pins 202 are, for example, substantially the same size and shape as the through holes 112a to 112c of the column 11. Instead of the pin 202, a bolt and a nut may be used for fixing the column 11 and the column base 200.

  The seat nut 203 is an example of a fixture, and is a member for connecting and fixing the column base bracket 200 and the base 13. Specifically, the seat nut 203 is fixed to the protrusion 230 inserted into the insertion hole 131 of the base 13.

  In the present embodiment, the seat nut 203 is housed in the counterbore portion 132 of the insertion hole 131, but is not limited to this. When the length of the protrusion 230 is longer than the base 13, the protrusion 230 protrudes upward from the insertion hole 131. In this case, the counterbore portion 132 may not be provided in the insertion hole 131, and the seat nut 203 may sandwich the upper surface 13a of the base 13 and the upper surface 130a of the concave portion 130.

  The plurality of screws 204 are an example of a fixture, and are members for connecting and fixing the column base fitting 200 and the base 12. Specifically, the plurality of screws 204 are inserted into the through holes 219 of the column base metal fitting 200 from the lower surface 210 b side of the bottom plate 211, and inserted into the base 12. The screw 204 may be provided with a male screw.

  The pin 202, the seat nut 203, and the screw 204 are formed of, for example, the same material as the metal fitting body 201.

  In the present embodiment, the column base metal fitting 200 is fixed to the base 12 such that the open surface of the space 216 is outside the first unit 10. Thereby, the space 216 can be exposed outside the building unit 1. For this reason, after the factory-produced building unit 1 is placed on the foundation 2, the anchor bolts and the column base bracket 200 can be fastened from outside the building unit 1.

[Building unit manufacturing method]
Subsequently, a method for manufacturing the building unit 1 will be described. Hereinafter, a manufacturing process of the first unit 10, particularly, a connecting process of the column 11 and the bases 12 and 13 using the column base metal fitting 200 will be described.

  12A to 12C are perspective views showing a method for manufacturing the building unit 1 according to the present embodiment. Specifically, FIG. 12A shows a step of fixing the metal fitting main body 201 of the column base metal fitting 200 and the base 12. FIG. 12B shows a step of fixing the metal fitting body 201 of the column base metal fitting 200 and the base 13. FIG. 12C shows a step of fixing the metal fitting body 201 of the column base metal fitting 200 to the column 11.

  In the method of manufacturing the building unit 1, first, the metal fitting body 201 of the column base metal fitting 200 and the base 12 are fixed. Specifically, as shown in FIG. 12A, the tenon 220 of the column base 200 is inserted into the through hole 123 of the base 12, and the pedestal portion of the column base 200 is inserted into the recess 120 of the base 12. 210 is stored.

  Specifically, the top plate 212 and the side plates 213 to 215 of the pedestal portion 210 are stored in the first storage portion 121 of the recess 120, and the bottom plate 211 of the pedestal portion 210 is stored in the second storage portion 122. Thereby, as shown in FIG. 12A (b), the lower surface 210b of the pedestal 210 and the lower surface 12b of the base 12 are substantially flush. Further, the tenon part 220 penetrates the through hole 123 to a predetermined height above the base 12.

  Next, the extension portion 218 of the bottom plate 211 and the base 12 are fixed using a plurality of screws 204. Specifically, the screw 204 is inserted from below into each of the plurality of through holes 219 provided in each of the first extension portion 218a and the second extension portion 218b of the bottom plate 211. The screw 204 is inserted through the through hole 219 and stabbed into the base 12. Thereby, the base 12 and the metal fitting body 201 are fixed.

  Subsequently, the metal fitting body 201 of the column base metal fitting 200 and the base 13 are fixed. Here, the case where the base 13 is fixed will be described, but the case where the base 14 is fixed can be similarly performed.

  As shown in FIG. 12C, the third extension 218c of the bottom plate 211 projects to the side of the base 12. The protrusion 230 protruding upward from the third extension 218 c is inserted into the insertion hole 131 of the base 13. The third extension portion 218c is housed in the recess 130. Thereby, as shown in (d) of FIG. 12B, the lower surface 210b of the base 210 and the lower surface 13b of the base 13 are substantially flush.

  Next, the protruding portion 230 and the base 13 are fixed using the seat nut 203. Specifically, the seat nut 203 is screwed into a male screw 231 provided at the tip of the protrusion 230. The flange 13 of the seat nut 203 and the third extension 218 c of the bottom plate 211 sandwich the base 13, thereby fixing the base 13 and the bracket main body 201.

  Subsequently, the metal fitting body 201 of the column base metal fitting 200 and the column 11 are fixed. Specifically, as shown in (e) of FIG. 12C, the tenon 220 that has penetrated the through-hole 123 of the base 12 is inserted into the tenon 111 of the pillar 11. The column 11 is placed on the base 12 with the tenon part 220 inserted in the tenon hole 111. Thereby, the end surface 110 of the pillar 11 and the upper surface 12a of the base 12 come into contact with each other. The base 12 can support the pillar 11 on the upper surface 12a. When inserting the mortise part 220 into the mortise hole 111, the through direction of each of the through holes 221 a to 221 c of the mortise part 220 matches the through direction of each of the through holes 112 a to 112 c of the pillar 11.

  Next, the metal fitting body 201 and the column 11 are fixed using the plurality of pins 202. Specifically, as shown in (f) of FIG. 12C, the pin 202 is inserted into each of the through holes 112a to 112c and each of the through holes 221a to 221c of the pillar 11. Thereby, the pillar 11 and the metal fitting body 201 can be fixed.

  In the present embodiment, the base 12, the base 13 (or the base 14), and the pillar 11 are fixed to the metal fitting body 201 in this order, but the present invention is not limited to this. For example, the base 12, the column 11, and the base 13 (or the base 14) may be fixed to the metal fitting body 201 in this order. Alternatively, the base 13 (or the base 14), the base 12, and the pillar 11 may be fixed to the metal fitting body 201 in this order.

  By repeating the steps shown in FIGS. 12A to 12C by the number of the column base fittings 200, the frame of the building unit 1 shown in FIG. 4 is completed. Specifically, after fixing all the column base fittings 200 and all the bases 12 to 14, each of all the columns 11 is fixed to the column base fittings 200, but is not limited thereto. After fixing the bases 12 to 14 and the column 11 to one column base 200, the bases 12 to 14 and the column 11 may be fixed to another column base 200.

  After the frame of the building unit 1 shown in FIG. 4 is completed, studs, foundation materials, interior materials or exterior materials, and the like are attached, and various facilities are installed. Thereby, the building unit 1 shown in FIGS. 1 to 3 is manufactured.

  The manufactured building unit 1 is mounted on a transport vehicle such as a truck and transported to a construction site. The building unit 1 transported to the construction site is lifted by a crane or the like, placed on the foundation 2, and fixed.

[Effects, etc.]
As described above, the building unit 1 according to the present embodiment is a building unit that constitutes a part of a building and is pre-assembled at a site other than the building site, and the mortise hole 111 is provided in the lower end surface 110. The base 11 includes a column 11, a base 12 that contacts the end surface 110 of the column 11, and supports the column 11, and a column base metal fitting 200 that connects and fixes the lower part of the column 11 and the base 12. The base 12 has a lower surface. A recess 120 recessed upward from 12b and a through hole 123 penetrating through the upper surface 121a of the recess 120 and connecting to the mortise hole 111 are provided. The pillar base 200 is thinner than the thickness of the base 12, The seat 210 includes a pedestal portion 210 housed therein and a mortise portion 220 protruding upward from the upper surface 210 a of the pedestal portion 210 and inserted into the through hole 123 and the mortise hole 111.

  Thus, the column 11 and the base 12 can be firmly connected and fixed using the column base metal fitting 200, so that the strength of the building unit 1 can be increased. Further, since the pedestal portion 210 of the column base metal fitting 200 can be accommodated in the concave portion 120 provided in the base 12, the column base metal fitting 200 can be arranged in the middle of the base 12. That is, since the base 12 (through base) can be formed of one material (wood), the accuracy of the arrangement interval (pitch) of the core of the base 12 and the columns 11 can be improved. Thereby, the building unit 1 with high quality and high strength can be provided.

  The building unit 1 according to the present embodiment is manufactured at a factory, then transported to a construction site, lifted using a rope or the like, and mounted on the foundation 2. For this reason, it is necessary that the base 12 and the column base metal fittings 200 and the like endure the own weight at the time of lifting. According to the present embodiment, since the base 12 is not divided by the column base 200 and the strength of the building unit 1 is increased, it can withstand its own weight at the time of lifting, which is extremely useful.

  Further, for example, the pedestal portion 210 is a bottom plate 211 and two side plates facing each other, each of which includes two side plates 213 and 214 erected on the bottom plate 211 and two side plates 213 and 214. And the tenon 220 protrudes upward from the upper surface 210 a of the top plate 212. Further, for example, a space 216 surrounded by the bottom plate 211, the two side plates 213 and 214, and the top plate 212 is a substantially rectangular parallelepiped space having at least one open side. Is provided.

  Thereby, for example, the outer shape of the pedestal portion 210 can be made a simple shape such as a substantially rectangular parallelepiped, and the shape of the concave portion 120 formed on the base 12 can be made a simple shape. Therefore, the building unit 1 can be easily manufactured. In addition, since the through-hole 217 for connecting the anchor bolt provided on the foundation 2 is provided on the bottom plate 211, the building unit 1 can be placed on the foundation 2 after manufacturing. Further, since the through hole 217 is connected to the space 216 whose one surface is open, the tip of the anchor bolt inserted into the through hole 217 can be exposed to the space 216. For this reason, an anchor bolt can be fastened using a nut or the like, and the building unit 1 can be fixed to the foundation 2.

  Further, for example, the bottom plate 211 has an extension 218 that extends outside the top plate 212 in plan view. Further, for example, the column base metal fitting 200 further includes a rod-shaped protruding portion 230 protruding upward from the extending portion 218. In addition, for example, the building unit 1 further includes a base 13 or 14 that is located on a side of the base 12 and has an insertion hole 131 into which the protrusion 230 is inserted.

  Thus, not only the base 12 but also the base 13 can be fixed to the column base 200. That is, since a plurality of bases can be fixed by one column base metal fitting 200, the number of parts can be reduced.

  Also, for example, the method for manufacturing the building unit 1 according to the present embodiment is a method for manufacturing the building unit 1 that constitutes a part of a building, and includes a recess 120 recessed upward from the lower surface 12b, In the through-hole 123 of the base 12 provided with the through-hole 123 penetrating the upper surface 121a of the base, a pedestal part 210 thinner than the thickness of the base 12, The step of inserting the mortise part 220 of the column base metal fitting 200 including the pedestal part 210 in the concave part 120 and the mortise part 220 penetrating through the through hole 123 is provided with the mortise hole 111 in the lower end face 110. And inserting it into the mortise 111 of the pillar 11 thus formed.

  Thus, the column 11 and the base 12 can be firmly connected and fixed using the column base metal fitting 200, so that the strength of the building unit 1 can be increased. Further, since the pedestal portion 210 of the column base metal fitting 200 can be accommodated in the concave portion 120 provided in the base 12, the column base metal fitting 200 can be arranged in the middle of the base 12. That is, since the base 12 (through base) can be formed of one material (wood), the accuracy of the arrangement interval (pitch) of the core of the base 12 and the columns 11 can be improved. Thereby, the building unit 1 with high quality and high strength can be manufactured.

(Other)
As described above, the building unit 1 and the method of manufacturing the same according to the present invention have been described based on the embodiments, but the present invention is not limited to the above embodiments.

  For example, in the above-described embodiment, the column base fitting 200 and the base 12 are fixed with the screws 204, but the present invention is not limited to this. Similarly to the fixing of the column base 200 and the base 13 (or the base 14), the column base 200 and the base 12 may be fixed by the protrusion 230 and the seat nut 203. Specifically, the base 12 may be provided with an insertion hole 131 into which the protrusion 230 is inserted. In addition, since the column base metal fitting 200 and the base 12 are fixed by inserting the pins 202 into the through holes 112a to 112c of the column 11, it is not necessary to directly fix them.

  Further, for example, in the above-described embodiment, an example has been described in which the notch (groove) -shaped concave portion 120 is provided in the base 12, but the present invention is not limited to this. Specifically, the recess 120 may form a substantially rectangular parallelepiped space in which only the lower surface is open.

  Further, for example, in the above-described embodiment, an example has been described in which the bottom plate 211 of the pedestal portion 210 has the extension portion 218, but the present invention is not limited to this. The bottom plate 211 and the top plate 212 may have the same shape in plan view.

  Further, for example, in the above-described embodiment, an example has been described in which the first unit 10 includes the column base 200, but the second unit 20 may include the column base 200. That is, units constituting the second or higher floors of the building may have the same configuration as the first unit 10.

  In addition, the present invention can be realized not only as a building unit but also as a column base metal fitting used for a building unit. Specifically, one embodiment of the present invention is a column base metal fitting 200 used for the building unit 1 included in a part of a building, wherein the pedestal part 210 is thinner than the thickness of the base 12, and from above the pedestal part 210. It can also be realized as a column base fitting including the protruding tenon part 220.

  In addition, a form obtained by performing various modifications that can be conceived by those skilled in the art to each embodiment, or a combination of components and functions in each embodiment arbitrarily without departing from the spirit of the present invention is realized. Embodiments are also included in the present invention.

1 building unit 11 pillar 12 base (first horizontal material)
12b Lower surface 13, 14 Base (second horizontal member)
110 end face 111 mortise hole 120 recess 121a, 122a, 130a, 210a upper surface 123 through hole (first through hole)
131 insertion hole 200 pillar base 210 pedestal part 211 bottom plate 212 top plate 213, 214, 215 side plate 216 space 217 through hole (second through hole)
218 Extension part 220 Tenon part 230 Projection part

Claims (4)

A building unit that constitutes a part of the building and is pre-assembled at a site other than the building site,
A pillar with a mortise on the lower end face,
A first horizontal member that contacts the end surface of the column and supports the column;
A column base fitting for connecting and fixing a lower portion of the column and the first horizontal member,
In the first horizontal member,
A recess recessed upward from the lower surface,
A first through-hole penetrating the upper surface of the recess and connected to the mortise;
The column base bracket is
A pedestal portion which is thinner than the thickness of the first horizontal member and is accommodated in the recess;
A building unit comprising: a mortise portion protruding upward from an upper surface of the pedestal portion and inserted into the first through hole and the mortise hole. The pedestal,
The bottom plate,
Two side plates facing each other, each of the two side plates standing on the bottom plate;
A top plate supported by the two side plates,
The tenon part projects upward from an upper surface of the top plate,
The space surrounded by the bottom plate, the two side plates, and the top plate is a substantially rectangular parallelepiped space in which at least one surface is open,
The building unit according to claim 1, wherein the bottom plate is provided with a second through hole connected to the space. The bottom plate has an extending portion that extends outside the top plate in plan view,
The pedestal fitting further includes a rod-shaped protrusion protruding upward from the extension.
The building unit according to claim 2, wherein the building unit further includes a second horizontal member located on a side of the first horizontal member and provided with an insertion hole into which the protrusion is inserted. A method of manufacturing a building unit constituting a part of a building,
A recess recessed upward from the lower surface, and a through-hole of the transverse member provided with a through-hole penetrating the upper surface of the recess, a pedestal portion thinner than the thickness of the transverse member, Protruding from above, inserting the tenon part of a column base fitting having a tenon part longer than the through hole, and storing the pedestal part in the recess,
Inserting the mortise part penetrating through the through-hole into the mortise hole of a pillar having a mortise hole in a lower end surface.

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