JP2017089160A - Column base metal fitting and cover used therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a column base metal fitting capable of improving manufacturability, by eliminating a process such as curving a metal plate in a circular arc shape.SOLUTION: A column base metal fitting 1 comprises a support part 2 fixable to a foundation 5 and a tenon part 3 insertable into a mortise 63 of a column 62. The support part 2 comprises a lower plate 21, an upper plate 27 and a pair of vertical plate parts 23. The lower plate 21 comprises a through-hole 22, and is formed in a rectangular shape. The upper plate 27 is separately provided on the upper side of the lower plate 21. The pair of vertical plate parts 23 are provided between the lower plate 21 and the upper plate 27, and support the upper plate 27. The pair of vertical plate parts 23 are arranged on both sides of the through-hole 22 in the parallel direction to the longitudinal direction of a sill 61. The pair of respective vertical plate parts 23 are constituted of a pair of plates 24. The pair of plates 24 mutually separate toward the end part side of the lower plate 21 from the central side of the lower plate 21 in the parallel direction to the longitudinal direction of the sill 61.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a column base bracket and a cover used therefor.

  Patent Document 1 discloses a conventional column base hardware. The conventional column base hardware includes a board disposed on the foundation concrete, a pair of leg plates erected on the board, a receiving plate erected on the pair of leg plates, and a connection plate erected on the receiving plate. And. The substrate is fixed to the foundation concrete via anchor bolts. The connecting plate is configured to be inserted into a slit provided in the column, and the column is fixed.

  Each of the pair of leg plates is curved in an arc shape in the horizontal cross section. Thereby, a pair of leg board can receive the external force of the front-back direction and the left-right direction which a pillar receives effectively.

JP 2002-167868 A

  By the way, in manufacturing this conventional column base metal, it is necessary to plastically deform the metal plate so as to be curved in an arc shape and to weld it to the substrate and the receiving plate in this state. However, the step of bending each leg plate in an arc shape requires processing in consideration of, for example, a springback, and there is a problem that it is difficult to process with high accuracy.

  This invention is made | formed in view of the said situation, The place made into the objective eliminates the process which curves a metal plate in circular arc shape, and provides the column base metal fitting which can improve manufacturability. There is.

  The column base metal fitting of the present invention is disposed in a divided part in the longitudinal direction of the base, and is supported by a support portion that can be fixed to the foundation, and protrudes upward from the upper surface of the support portion, and is inserted into a mortise formed in the lower end surface of the column. A column base bracket provided with a possible tenon portion, wherein the support portion is a rectangular lower plate having a through-hole through which an anchor bolt provided in the foundation can be inserted, and the upper side of the lower plate It is provided apart from the lower plate, and is configured to support the upper plate by being provided between the upper plate forming the upper surface of the support portion and the lower plate and the upper plate, and the longitudinal direction of the base A pair of vertical plate portions disposed on both sides of the through hole in a direction parallel to the through hole, each of the pair of vertical plate portions is constituted by a pair of flat plates, and the pair of flat plates is the base plate From the center side of the lower plate to the end side of the lower plate in a direction parallel to the longitudinal direction Kauhodo, characterized in that it is configured to move away from each other.

  According to the column base metal fitting of the present invention, it is possible to eliminate the step of bending the metal plate in an arc shape, and to improve the productivity.

It is a disassembled perspective view which shows the installation state of the column base metal fitting of one Embodiment of this invention. It is a perspective view of the column base metal fitting body of the above-mentioned embodiment. It is a horizontal sectional view of the column base metal fitting body of the above-mentioned embodiment. It is a horizontal sectional view explaining fastening a nut using the tool of the above-mentioned embodiment. It is a horizontal sectional view in the state where the cover was attached to the column base metal fitting body of the above-mentioned embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  As shown in FIG. 1, the column base bracket 1 according to the present embodiment is disposed at a portion (divided portion) where a part of the base 61 is divided in the longitudinal direction, and is fixed to the foundation 5 by screwing. . The column base 1 is configured to be able to fix the column 62 while being fixed to the foundation 5. The column base 1 includes a support portion 2 that can be fixed to the foundation 5, a tenon portion 3 that protrudes upward from the upper surface of the support portion 2, and a cover 4. The support portion 2 and the tenon portion 3 may be collectively referred to as a column base metal body 10.

  In the following, a direction parallel to the longitudinal direction of the base 61 is defined as the left-right direction, and a direction orthogonal to the longitudinal direction of the base 61 and along the horizontal plane is defined as the front-rear direction.

  The support portion 2 is fixed to the foundation 5 in a state where the support portion 2 is disposed in a divided portion of the base 61. The support part 2 supports the pillar 62 from below. As shown in FIG. 2, the support portion 2 includes a lower plate 21, a pair of vertical plate portions 23, and an upper plate 27.

  The lower plate 21 is screwed by anchor bolts 51 protruding from the foundation 5. Most of the anchor bolt 51 is embedded in the foundation 5, and the upper end portion protrudes from the upper surface of the foundation 5 as shown in FIG. 1. A male screw is formed at the upper end of the anchor bolt 51.

  The lower plate 21 has a rectangular shape when viewed from above (hereinafter referred to as a plan view), and is particularly formed in a square shape. As shown in FIG. 2, a through hole 22 through which the anchor bolt 51 can be inserted is provided at the center of the lower plate 21. The through hole 22 penetrates the lower plate 21. In the state where the lower plate 21 is placed on the upper surface of the foundation 5, anchor bolts 51 are passed through the through holes 22. In this state, the lower plate 21 is fixed onto the foundation 5 by the nut 73 being screwed into the anchor bolt 51 and the nut 73 being fastened.

  The pair of vertical plate portions 23 are separated in the left-right direction, and are disposed on both sides of the through hole 22 in the left-right direction (hereinafter, the vertical plate portion 23 disposed on the right side is referred to as a first vertical plate portion 231, The vertical plate portion 23 arranged on the left side may be referred to as a second vertical plate portion 232). The pair of vertical plate portions 23 are formed symmetrically with respect to a vertical plane including a vector parallel to the front-rear direction passing through the center of the through hole 22. The pair of vertical plate portions 23 are disposed between the upper plate 27 and the lower plate 21 and are fixed to the upper plate 27 and the lower plate 21. Accordingly, the pair of vertical plate portions 23 are configured to support the upper plate 27. Each of the pair of vertical plate portions 23 includes a pair of flat plates 24, and is formed in a substantially V shape in plan view by the pair of flat plates 24.

  As shown in FIG. 3, the pair of flat plates 24 are formed symmetrically with respect to a vertical plane including a vector parallel to the horizontal direction passing through the center of the through hole 22. The pair of flat plates 24 of the first vertical plate portion 231 is formed so that the distance in the front-rear direction increases as it goes from the center side of the lower plate 21 to the right side of the lower plate 21. In addition, the pair of flat plates 24 of the second vertical plate portion 232 is formed such that the distance in the front-rear direction increases from the center side of the lower plate 21 toward the left side of the lower plate 21. That is, each of the pair of vertical plate portions 23 is configured such that the pair of flat plates 24 are separated from each other toward the end portion side of the lower plate 21 from the center side of the lower plate 21 in the left-right direction.

  As shown in FIG. 2, the four flat plates 24 are all formed in the same shape and size. Each flat plate 24 is formed with one notch 25. In the state where the flat plate 24 is attached between the lower plate 21 and the upper plate 27, the notch 25 is formed at the outer edge (the outer edge in the left-right direction or the front-rear direction). As shown in FIG. 4, the notch 25 does not interfere with the tool 8 so that the tool 8 (for example, a spanner or a ratchet wrench) used when the nut 73 is screwed into the anchor bolt 51 can be greatly rotated. Formed as follows.

  As shown in FIG. 2, the notch 25 has a lower edge 251, a vertical edge 252, and an upper edge 253. The lower edge 251 is inclined so as to be positioned upward as it approaches the vertical edge 252. The upper edge 253 is inclined so as to be positioned downward as it approaches the vertical edge 252. The vertical edge 252 extends in the vertical direction, and the lower end is continuous with the lower edge 251 and the upper end is continuous with the upper edge 253. The lower end of the vertical edge 252 is located, for example, about 20 mm above the upper surface of the lower plate 21. Further, the vertical edge 252 is formed to be approximately 50 mm. Thereby, the notch part 25 is formed in the intermediate part of the up-down direction of each flat plate 24. As shown in FIG.

  As described above, the column base body 10 of the present embodiment is formed so that the lower edge 251 and the upper edge 253 are not simply formed in the notch 25 but inclined. For this reason, the column base metal body 10 of the present embodiment is formed in a structure that suppresses a decrease in strength due to the provision of the notch portion 25 and hardly causes buckling.

  The upper plate 27 is placed on the upper end surfaces of the pair of vertical plate portions 23, and is disposed on the upper side of the lower plate 21 so as to be separated from the lower plate 21. The upper plate 27 is supported by the pair of vertical plate portions 23. The upper plate 27 has a rectangular shape in plan view, and is particularly formed in a square shape. The upper plate 27 is formed in the same shape and size as the lower plate 21. The upper plate 27 forms the upper surface of the support portion 2, and is flush with the upper surface of the base 61 as shown in FIG. 1 in a state where the column base 1 is installed on the foundation 5.

  The upper plate 27 and the lower plate 21 are fixed to the four flat plates 24 by welding. A protrusion 26 is formed on the upper end surface of each flat plate 24. Further, a projection is formed on the lower end surface of each flat plate 24 in the same manner as the upper end surface. A plurality of mounting holes 28 are provided in the upper plate 27. The lower plate 21 is also provided with a plurality of mounting holes. Each flat plate 24 inserts the protrusion 26 formed on the upper end surface into the attachment hole 28 of the upper plate 27, and inserts the protrusion formed on the lower end surface into the attachment hole of the lower plate 21. The flat plate 24 and the lower plate 21 and the flat plate 24 are welded.

  Thereby, at the time of manufacture, for example, if the lower plate 21 is horizontally disposed and the flat plate 24 is placed on the lower plate 21 with the protrusions inserted into the mounting holes, the lower plate 21 can be easily and accurately obtained. The flat plate 24 can be positioned at a right angle. Further, the same applies to the case of manufacturing by turning upside down, that is, when the flat plate 24 is attached with the upper plate 27 facing downward. In the present embodiment, the mounting holes 28 are provided in the upper plate 27 and the lower plate 21, but may be provided only in either the upper plate 27 or the lower plate 21. In this case, the flat plate 24 is provided with a protrusion 26 on either end face in the vertical direction.

  The support portion 2 having such a configuration is provided with a tenon portion 3 protruding upward from the upper surface of the upper plate 27. The tenon portion 3 is formed in a cylindrical shape extending upward from the center of the upper plate 27 in plan view. A plurality of fixing holes 31 into which the pins 71 can be inserted are provided around the tenon portion 3. As shown in FIG. 1, the tenon portion 3 is inserted into a mortise 63 formed in the lower end surface (small edge) of the column 62, and in this state, the plurality of pin insertion holes 64 and the plurality of fixing holes 31 of the column 62. In addition, a plurality of pins 71 are inserted one-on-one. Thereby, the column base metal body 10 and the column 62 are fixed.

  The tenon portion 3 is not limited to a cylindrical shape, and may be formed in a columnar shape, a quadrangular prism shape, or a flat plate shape, for example, and the shape is not limited. Further, the mortise 63 formed in the corresponding column 62 is not limited to a circular hole as long as the mortise portion 3 can be inserted, and the shape is not particularly limited, for example, a slit mortise.

  The cover 4 is attached to any side part of the support part 2 in the front-rear direction. The cover 4 functions as a backup material when a filler is filled in a space surrounded by the upper plate 27, the lower plate 21, and the pair of vertical plate portions 23. Examples of the filler include foamed resins such as foamed urethane. The cover 4 is preferably attached to the side portion of the support portion 2 on the outdoor side. Thereby, it can prevent that a filler is exposed to the external appearance of a building and an external appearance is impaired. As shown in FIG. 5, the cover 4 includes a flat plate portion 41, a pair of bent portions 43, and a pair of hook portions 42, and is integrally formed with, for example, a metal plate or a resin plate.

  The flat plate portion 41 is formed flush with the side surface of the base 61 when attached to the support portion 2. The flat plate portion 41 covers either one of the pair of side portions in the front-rear direction of the support portion 2. The flat plate portion 41 is formed in a flat plate shape, and main surfaces on both sides in the front-rear direction form a flat surface. The flat plate portion 41 is configured to fit between the upper plate 27 and the lower plate 21.

  The pair of bent portions 43 protrude from the left and right end portions of the flat plate portion 41 in either the front-rear direction. The bent portion 43 and the flat plate portion 41 are orthogonal to each other. The pair of hook portions 42 are formed on the pair of bent portions 43 on a one-to-one basis. Each hook portion 42 is inclined so as to approach the flat plate portion 41 side toward the center side of the cover 4 in the left-right direction. The hook portion 42 is formed so as to be hookable on an upper portion of the outer edge of the flat plate 24 (a portion above the notch portion 25). Thus, the cover 4 is configured to be attachable to the support portion 2.

  The column base 1 having such a configuration is attached as follows. As shown in FIG. 1, the base 61 is arranged on the foundation 5 with a gap in the longitudinal direction to be fixed in a divided state, and the column base metal body 10 is arranged in the divided portion. At this time, the through hole 22 of the lower plate 21 is inserted into the anchor bolt 51 protruding from the upper surface of the foundation 5, the nut 73 is screwed, and the support portion 2 is fixed on the foundation 5. In addition, the code | symbol 72 in FIG. 1 is a basic packing. Further, the foundation 5 and the base 61 may be fixed after the column base metal body 10 is fixed to the foundation 5. Further, the column base 1 may be disposed not only at the divided portion of the base 61 but also at the corner portion of the building where the base 61 intersects.

  Next, the column 62 is raised on the base 61 so that the tenon portion 3 is inserted into the tenon hole 63 of the column 62. In this state, the plurality of pins 71 are inserted one-to-one into the plurality of pin insertion holes 64 formed on the side surface of the lower end portion of the column 62, and the column 62 is fixed to the tenon portion 3. Thereby, the pillar 62 is fixed on the foundation 5.

  Next, the cover 4 is attached to any side portion of the support portion 2 in the front-rear direction. At this time, the cover 4 is preferably attached to the outdoor side. The outer surface of the flat plate portion 41 of the cover 4 is disposed so as to be flush with the side surface of the base 61.

  Next, the installer fills the space surrounded by the upper plate 27, the lower plate 21, the pair of vertical plate portions 23, and the cover 4 with, for example, a filler made of urethane foam. This completes the construction.

(effect)
As described above, the column base 1 of the present embodiment includes the following first aspect. The first aspect includes a support portion 2 and a tenon portion 3. The support portion 2 is arranged in a divided portion in the longitudinal direction of the base 61 and is configured to be fixable to the foundation 5. The tenon portion 3 protrudes upward from the upper surface of the support portion 2 and is configured to be inserted into a tenon hole 63 formed in the lower end surface of the column 62. The support portion 2 includes a lower plate 21, an upper plate 27, and a pair of vertical plate portions 23. The lower plate 21 is formed in a rectangular shape and has a through hole 22 into which the anchor bolt 51 can be inserted. The upper plate 27 is provided on the upper side of the lower plate 21 apart from the lower plate 21 and forms the upper surface of the support portion 2. The pair of vertical plate portions 23 is provided between the lower plate 21 and the upper plate 27 and is configured to support the upper plate 27. Further, the pair of vertical plate portions 23 are arranged on both sides of the through hole 22 in a direction parallel to the longitudinal direction of the base 61. Each of the pair of vertical plate portions 23 includes a pair of flat plates 24. The pair of flat plates 24 are separated from each other toward the end of the lower plate 21 from the center side of the lower plate 21 in the direction parallel to the longitudinal direction of the base 61. Here, the “rectangular shape” includes not only a rectangular shape but also a square shape.

  According to this configuration, each of the pair of vertical plate portions 23 is configured by a pair of flat plates 24, that is, configured by combining plate-shaped members without curving the plate material. Good sex. As a result, according to the column base metal fitting 1 of the present embodiment, it is possible to eliminate the process of bending the metal plate in an arc shape, to improve manufacturability, and to exhibit stable strength. it can.

  Moreover, in the column base 1 of the present embodiment, each flat plate 24 is inclined with respect to both the left-right direction and the front-rear direction in the horizontal cross section. For this reason, even if the column receives an external force directed in either the front-rear direction or the left-right direction, the column base metal fitting 1 of the present embodiment can effectively receive the external force, and is excellent in strength isotropy. It has become.

  Moreover, the column base metal fitting 1 of this embodiment is provided with the aspect in any one of the following additional 2nd-5th.

  The second mode is the first mode, in which each of the pair of flat plates 24 has a notch 25 formed at the outer edge of each of the pair of flat plates 24 in a direction parallel to the longitudinal direction of the base 61. doing. According to this configuration, even if the tool 8 is used for screwing the nut 73 into the anchor bolt 51 inserted through the through hole 22 and then fastening, the fastening operation can be performed with good workability. That is, even if the tool 8 is rotated around the anchor bolt 51, the tool 8 can be rotated as much as possible by providing the notch 25.

  A 3rd aspect is provided with the following structures in the 1st or 2nd aspect. At least one of the upper plate 27 and the lower plate 21 has at least one attachment hole 28 formed at each joint location of the pair of flat plates 24. The pair of flat plates 24 are provided with protrusions 26 that are inserted through the mounting holes 28. The pair of flat plates 24, the upper plate 27, and the lower plate 21 are welded with the protrusions 26 inserted into the mounting holes 28. According to this configuration, when attaching the pair of flat plates 24 to the upper plate 27 or the lower plate 21, the pair of flat plates 24 can be attached to the upper plate 27 or the lower plate 21 with high accuracy.

  A 4th aspect is further equipped with the cover 4 attached to either of a pair of side part of the direction orthogonal to the longitudinal direction of the base 61 with respect to the support part 2 in any one of the aspects 1-3. ing. According to this configuration, the operator can easily fill the support portion 2 with the filler and improve workability.

  According to a fifth aspect, in the fourth aspect, the cover 4 has a pair of hook portions that are hooked to the pair of vertical plate portions 23. According to this aspect, when the support part 2 is filled with the filler, it is possible to prevent the cover 4 from coming off.

  Moreover, the cover 4 of this embodiment is used for the column base 1 of the fourth aspect. The cover 4 includes a flat plate portion 41 that covers one of a pair of side portions in a direction orthogonal to the longitudinal direction of the base 61. According to this configuration, when the cover 4 is attached to the support portion 2, the flat plate portion 41 can be flush with the base 61, and the appearance can be improved.

DESCRIPTION OF SYMBOLS 1 Column base 2 Support part 21 Lower plate 22 Through-hole 23 Vertical plate part 24 Flat plate 25 Notch part 26 Protrusion 27 Upper plate 28 Mounting hole 3 Tenon part 4 Cover 41 Flat plate part 42 Hook part 5 Base 51 Anchor bolt 61 Base 62 Pillar 63 Mortise

Claims (6)

A support part that is arranged in a divided part in the longitudinal direction of the base and can be fixed to the foundation;
A column base metal fitting provided with a tenon portion protruding upward from the upper surface of the support portion and insertable into a mortise formed in the lower end surface of the column,
The support part is
A rectangular lower plate having a through-hole through which an anchor bolt provided on the foundation can be inserted;
An upper plate provided on the upper side of the lower plate apart from the lower plate and forming the upper surface of the support;
A pair of vertical plate portions provided between the lower plate and the upper plate and configured to support the upper plate and disposed on both sides of the through hole in a direction parallel to the longitudinal direction of the base; With
Each of the pair of vertical plate portions is composed of a pair of flat plates,
The pair of flat plates are configured to be separated from each other toward the end side of the lower plate from the center side of the lower plate in a direction parallel to the longitudinal direction of the base. . The pair of flat plates each have a notch formed on an outer edge of each of the pair of flat plates in a direction parallel to the longitudinal direction of the base. Column base bracket. At least one of the upper plate and the lower plate has at least one attachment hole formed at each joint location of the pair of flat plates,
The pair of flat plates is provided with a protrusion inserted through the mounting hole,
The column base metal fitting according to claim 1 or 2, wherein the pair of flat plates, the upper plate, and the lower plate are welded in a state where the protrusion is inserted into the mounting hole. The said support part is further equipped with the cover attached to either of a pair of side part of the direction orthogonal to the longitudinal direction of the said base, The Claim 1 characterized by the above-mentioned. The column base bracket described. The column base metal fitting according to claim 4, wherein the cover has a pair of hook portions hooked on the pair of vertical plate portions. A cover used for the column base metal fitting according to claim 4,
A cover comprising a flat plate portion covering one of a pair of side portions in a direction orthogonal to the longitudinal direction of the base.

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