JP6416641B2 - Prop support - Google Patents

Description

  The present invention relates to a column support that supports a column.

  In a building under construction or renovation, in order to increase the safety of work at a high place, a support such as a safety support may be temporarily attached to the building. Here, when installing an outer wall panel on the upper floor of a multi-storey building, if the column is installed on the outdoor side of the outer wall panel installation position, the work is on the indoor side of the outer wall panel installation position. When performing installation work of an outer wall panel, a person will become difficult to connect an own safety belt to a support.

  Therefore, by fixing the support column to a floor panel such as a floor material, the support column can be disposed indoors with respect to the installation position of the outer wall panel. For example, there is a technique for fixing the support column to the floor panel by inserting the support column into the hole of the floor panel from above (see, for example, Patent Document 1). In this technology, with the column inserted into the hole in the floor panel, the column is fixed to the floor panel by engaging the engagement plate attached to the lower end of the column with the lower surface of the floor panel. The This engagement plate can be shifted to an engaged state that can be engaged with the floor panel and a non-engaged state that is not engaged, and is held in the engaged state by being in contact with the lower surface of the floor panel. It has come to be.

Japanese Utility Model Publication No. 7-10255

  However, in the structure in which the engagement plate is held in the engaged state by being in contact with the lower surface of the floor panel in the support column, the state of the engagement plate is held by the floor panel. Depending on the shape, the engagement plate may be unintentionally shifted from the engaged state to the non-engaged state. In this case, the fixed state of the column with respect to the floor panel becomes unstable, and the safety is lowered.

  This invention is made | formed in view of the said situation, and makes it the main objective to provide the support | pillar support tool which can fix a support | pillar suitably with respect to a floor.

  Hereinafter, means and the like effective for solving the above-described problems will be described while showing functions and effects as necessary. In the following, for easy understanding, the corresponding configuration in the embodiment of the invention is appropriately shown in parentheses, but is not limited to the specific configuration shown in parentheses.

  The column support of the first invention is a column support (stanchion pedestal 33) that supports the column (stanchion 31) while being fixed to the floor material (floor panel 16) of the building (building 10). The column is supported by being attached to the column, and at least a part of the column is inserted into the through hole (fixed hole 22A) of the floor member from above and supported on the floor member. A tool body (pedestal body 41), a shaft member (movable shaft member 42) movable in the vertical direction with respect to the support tool body, and attached to the shaft member on the lower side of the support tool body, Pull that shifts between a non-hanging state that is not hooked to the main body from below and a hooked state that is hooked from below to the support body while being rotated to a position that is a predetermined angle with respect to the axial direction of the shaft member. A hook member (locking piece 43), and the hook member moves from the non-hook state to the hook state by moving the shaft member relatively upward with respect to the support body, When in the hooked state, the support body is fixed to the floor material.

  According to the first invention, in the column supporter that supports the column, the hook member is caught from the non-hanging state by performing an easy operation of moving the shaft member relatively upward with respect to the support body. The state can be changed. For this reason, a support | pillar support tool can be easily fixed to a floor surface material using the hook member shifted to the hooked state.

  Moreover, regardless of whether or not the hook member is in contact with the floor surface material, the hook member is held in the hooked state by being hooked from below with respect to the support body, so the hook member is in the hooked state. It can be said that the support column supporter can shift to a self-holding state in which the state of the hook member is held by the support column support itself. For this reason, as long as the self-holding state of the support | pillar support tool is not cancelled | released, a hook member does not transfer from a hooked state to a non-hooked state unintentionally. In addition, since the state of the hook member is held by the support body, for example, unlike the configuration in which the state of the hook member is held by the floor material, the rotation mode of the hook member is changed to the position and shape of the floor material. There is no need to match. For this reason, it can suppress that the structure for making a state transition of a hooking member becomes complicated.

  As described above, the column can be suitably fixed to the floor using the column support.

  According to a second aspect, in the first aspect, the hook member is rotated by being pressed against the support body from below when the shaft member moves upward relative to the support body. It moves and shifts from the non-hanging state to the hooking state.

  According to the second aspect of the present invention, the hook member is simply pressed against the support body from below to rotate from the non-hanging state to the hooking state. It can suppress that the structure to which it transfers to a state becomes complicated.

  According to a third invention, in the first or second invention, the hook member and the support body are opposed surfaces (an inclined end surface 43a and a lower end surface 46a) that face each other when the hook member is in the non-hanging state. And the opposing surface (inclined end surface 43a) of the hook member and the opposing surface (lower end surface 46a) of the support body have an inclination angle inclined in the rotational direction of the hook member. They are different from each other, and the hook member rotates when the facing surface of the hook member is pressed against the facing surface of the support body from below.

  According to the third aspect of the present invention, since the opposing surface of the hooking member and the opposing surface of the support tool main body are not parallel, the hook member can be rotated relative to the support tool main body by an easy operation of simply pressing the opposing surfaces. Can be encouraged.

  According to a fourth aspect, in the third aspect, on the facing surface of the hooking member, the separation distance of the hooking member with respect to the rotation shaft is gradually reduced in the rotation direction of the hooking member.

  According to the fourth aspect of the present invention, since the opposing surface of the hooking member has a shape that promotes the rotation of the hooking member, the hooking member can be rotated without special processing on the opposing surface of the support body. Can be realized.

  According to a fifth aspect, in the fourth aspect, the opposing surface of the hook member is inclined in a curved manner so that an intermediate portion in the rotation direction of the hook member swells toward the other side.

  According to the fifth aspect, since the opposing surface of the hooking member is a curved surface, the rotation angle of the hooking member with respect to the support tool main body increases as the movement distance of the shaft member relative to the support tool main body increases. The configuration can be realized. In this case, for example, unlike the configuration in which the opposing surfaces of the hook member and the support tool main body are flat surfaces, a technique for shifting the hook member to the hooked state is not required. For this reason, the work burden at the time of fixing a support | pillar support tool with respect to a floor surface material can be reduced.

  In a sixth invention, in any one of the first to fifth inventions, the support body has a receiving surface (lower end surface 46a) perpendicular to the moving direction of the shaft member and the hook member is pressed from below. The hook member has a state holding surface (second flat surface 76) that holds the state of the hook member by overlapping the receiving surface when the hook member is in the hooked state; and A rotation facilitating surface (inclined end surface 43a) that is inclined with respect to the state holding surface, and that is pressed against the receiving surface as the shaft member moves upward, to facilitate the rotation of the hook member. Have.

  According to the sixth invention, since the hooking member has both the state holding surface and the rotation promoting surface, the hooking member is shifted to the hooking state while urging the hooking member to turn to the hooking state. After that, it is possible to regulate the release of the hooked state. For this reason, it is possible to perform both the state transition and the state holding of the hook member by performing an easy operation of moving the shaft member upward with respect to the support body.

  In a seventh aspect based on the sixth aspect, in the sixth aspect, when the hook member is in the non-hanging state, the rotation promoting surface extends obliquely upward from the upper end portion of the state holding surface. When in the hooked state, the rotation promoting surface extends sideways along the receiving surface from the upper end of the state holding surface.

  According to the seventh aspect, since the state holding surface and the rotation promoting surface are continuous in the hook member, it is possible to suppress the rotation of the hook member from stopping at a stage where the hook member has not reached the hook state. . In this case, since a technique for shifting the hook member from the non-hanging state to the hooking state is not required, it is possible to reduce the work burden when fixing the column support to the floor surface material.

  In an eighth invention according to any one of the first to seventh inventions, the hook member is pressed against the support body from below when the hook member transitions from the non-hook state to the hook state. Part (rotation base end part 57) and the rotation tip side from the pressing part, and when the hooking member is in the hooked state, it is arranged at a position that wraps around the floor material. And a turning shaft portion (turning shaft portion) that rotatably supports the hook member with respect to the shaft member. 61) is provided in the pressing portion, and is arranged below the pressing portion when the hooking member is in the non-hanging state.

  According to the eighth feature, since the rotation shaft portion is provided in the hook portion, when the hook member is in the non-hook state, the hook member is moved up and down by the weight of the pressing portion (the center of gravity of the hook member). It is easy to be held in a state extending in the direction. For this reason, when installing the support | pillar support, the operation | work which inserts a hook member in the through-hole of a floor surface material from upper direction can be facilitated.

  In a ninth aspect based on the eighth aspect, the pressing portion is opposed to the shaft member with the shaft member interposed therebetween in the axial direction of the rotation shaft portion, and is pivotally supported by the rotation shaft portion. The pair of side surface portions (side surface portions 71) are pressed against the support body from below.

  According to the ninth aspect, since the pair of side surface portions pressed against the support body from below are arranged on both sides with the shaft member interposed therebetween, for example, the shaft member is moved upward with respect to the support body. If the hook member does not rotate even if it is moved, when the pivot member is urged to rotate left and right by rotating the shaft member about the central axis as a rotation axis, the hook member moves from the lower position of the support body to the left and right. It is regulated that it shifts. Therefore, it is possible to reduce the work load when the hook member is shifted to the hooked state.

Schematic perspective view showing building under construction Vertical section of the floor panel around the floor panel fixing member Vertical section of floor panel 16 around the stanchion pedestal Front view of stanchion pedestal Perspective view of locking piece Diagram for explaining the operation of the locking piece The figure which shows the attachment procedure of the stance pedestal to the floor panel The figure which shows the attachment procedure of the stance pedestal to the floor panel

  Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings. In this embodiment, the column supporter of the present invention is used for a two-story building being constructed by a steel frame construction method at a construction site. First, the building 10 under construction will be described with reference to FIGS. FIG. 1 is a schematic perspective view showing a building 10 under construction, and FIG. 2 is a longitudinal sectional view of a floor panel 16 around a floor panel fixing member 21.

  As shown in FIG. 1, the building 10 under construction is in a state where a first floor portion 12 as a lower floor portion and a second floor portion 13 as an upper floor portion are being built on a foundation 11. The outer wall of the building 10 is constructed by attaching the outer wall panel 15 to a frame such as a pillar or a large beam, and the installation work of the outer wall panel 15 has been completed on the first floor portion 12, and the second floor. In the portion 13, the outer wall panel 15 is partially attached. The outer wall panel 15 includes an outer wall surface material such as a ceramic siding board and a base frame attached to the outer wall surface material.

  Around the building 10, there is a scaffold (not shown) used for attaching the outer wall panel 15 and the like. The worker can attach the safety belt attached to the scaffold to the scaffold and the scaffold. In the state of being connected to the master rope, you will work on the scaffold.

  As shown in FIG. 2, the floor portion of the second floor portion 13 is constructed by installing a floor panel 16 such as lightweight aerated concrete (ALC) on the floor beam 17. The work of placing the floor panel 16 on the floor girder 17 has been completed. The floor panel 16 is formed in a rectangular shape, and a plurality of floor panels 16 are arranged side by side. Each floor panel 16 is spanned across a plurality of floor beams 17 extending in parallel to each other. The floor panel 16 corresponds to a floor material.

  The floor panel 16 is fixed to the floor girder 17 using a floor panel fixing member 21. The floor panel 16 is provided with a fixing hole 22 into which the floor panel fixing member 21 is inserted. A plurality of fixing holes 22 are provided along the peripheral edge of the floor panel 16, and each fixing hole 22 is a through-hole penetrating the floor panel 16 up and down. The fixing hole 22 has a counterboring portion 23 extending downward from the upper surface of the floor panel 16, and is disposed at a position where the lower end of the fixing hole 22 does not overlap the floor beam 17 vertically. The floor girder 17 has a web 17a and a pair of flanges 17b and 17c provided above and below the web 17a. The floor panel 16 is placed on the upper flange 17b.

  The floor panel fixing member 21 is screwed into the insertion portion 24 while passing through the insertion portion 24 inserted into the fixing hole 22, the seat plate portion 25 placed on the bottom surface of the counter digging portion 23, and the seat plate portion 25. It has a bolt part 26 that is attached, and a hook part 27 that is hooked on the floor girder 17 from below while protruding laterally from the insertion part 24. The hook portion 27 extends laterally from the lower end portion of the insertion portion 24 so as to be disposed below the upper flange 17b of the floor beam 17, and the bolt portion 26 is screwed into the insertion portion 24, so that the seat The floor panel 16 and the upper flange 17 b are sandwiched between the plate portion 25. The head part 26 a and the seat plate part 25 of the bolt part 26 are accommodated in the countersunk part 23.

  The hook portion 27 is pivotally supported with respect to the insertion portion 24, and can move from the protruding state to the folded state by rotating in a direction overlapping the insertion portion 24. When the floor panel 16 is fixed using the floor panel fixing member 21, first, the hook portion 27 is shifted to the folded state, and the insertion portion 24 and the hook portion 27 are both inserted into the fixing hole 22 from above. insert. Then, the insertion portion 24 is rotated to shift to the projecting state, hooked on the upper flange 17b of the floor beam 17 from below, and the bolt portion 26 is screwed into the insertion portion 24 in this state, whereby the floor panel 16 is fixed to the floor. Fix to the girder 17. Thus, the operator can perform the fixing operation of the floor panel 16 while using the floor panel fixing member 21 while staying on the floor panel 16.

  Returning to the description of FIG. 1, after the worker installs the floor panel 16 in the second-floor portion 13 and before starting the installation work of the outer wall panel 15, the worker places the stanchion 31 as a safety column from the installation position of the outer wall panel 15. Install indoors. The stanchions 31 are temporary support columns formed of a cylindrical steel pipe, and a plurality of stanchions 31 are arranged at predetermined intervals along the installation position of the outer wall panel 15. The worker installs the master rope 32 so as to be bridged over the adjacent stanchions 31, and performs the installation work of the outer wall panel 15 in a state where the safety belt is connected to the stanchions 31 and the master rope 32. In this case, unlike the case where the worker connects the safety belt to the scaffold or parent rope outside the building, the safety belt does not cross the installation position of the outer wall panel 15 to the indoor side. The safety belt can be connected to the stanchions 31 and the master rope 32 in a state that does not hinder them. The stanchions 31 can also be referred to as temporary columns.

  The stanchion 31 is fixed to the floor panel 16 and the floor girder 17 via a stanchion pedestal 33 as a support column. Here, in the state where the stanchions 31 are installed, the floor panel fixing members 21 are not attached to all the fixing holes 22 of the floor panel 16, and the floor panel fixing members 21 are not attached. There is a hole 22A, and the stanchion pedestal 33 is attached to the floor panel 16 and the floor girder 17 using the fixed hole 22A. The fixing holes 22 </ b> A are included in the plurality of fixing holes 22 arranged along the installation position of the outer wall panel 15. For example, in the configuration in which two fixing holes 22 are arranged along the installation position of the outer wall panel 15 in one floor panel 16, the floor panel fixing member 21 is attached to one of the fixing holes 22, and the other is the floor. It is used as a fixing hole 22A to which the panel fixing member 21 is not attached.

  Incidentally, when it is not necessary for the operator to connect the safety belt to the stanchion 31 or the master rope 32 by completing the installation work of the outer wall panel 15 in the second-floor portion 13, the stanchion pedestal 33 is removed from the fixing hole 22A. The floor panel fixing member 21 is attached to the fixing hole 22A. Thereby, in the state where the building 10 is completed, the fixing strength of the floor panel 16 to the floor girder 17 is appropriately secured in the second-floor portion 13.

  A state where the stanchion base 33 is attached to the floor panel 16 will be described with reference to FIG. FIG. 3 is a longitudinal sectional view of the floor panel 16 around the stanchion base 33.

  First, a state in which the stanchion base 33 is fixed to the floor panel 16 and the floor girder 17 through the fixing hole 22A will be described. As shown in FIG. 3, the stanchion pedestal 33 includes a pedestal main body 41 inserted into the fixing hole 22 </ b> A from above, a movable shaft member 42 movable in the vertical direction with respect to the pedestal main body 41, and the pedestal main body 41. On the other hand, it has a locking piece 43 locked from below. In this case, the stanchion pedestal 33 corresponds to the support column support, the pedestal main body 41 corresponds to the support main body, the moving shaft member 42 corresponds to the shaft member, and the locking piece 43 corresponds to the hook member.

  The pedestal main body 41 has a stanchion support portion 45 that supports the stanchion 31, a movement shaft support portion 46 that supports the movement shaft member 42, and a mounting plate portion 47 that is placed on the floor panel 16. The support portions 45 and 46 and the mounting plate portion 47 are integrally formed of a metal material. The stanchion support 45 and the moving shaft support 46 are both formed in a cylindrical shape, and the length (for example, 25 to 30 cm) of the moving shaft support 46 is the length of the stanchion support 45 (for example, 15 to 15). 20 cm). In these support portions 45 and 46, the respective internal spaces are opened upward and downward, and the inner diameter of the stanchion support portion 45 is larger than the outer diameter of the moving shaft support portion 46. The moving shaft support part 46 is provided in a state of penetrating the internal space of the stanchion support part 45 in the vertical direction, and protrudes upward and downward from the stanchion support part 45.

  The stanchion support portion 45 has a bottom portion 45a that forms the bottom surface thereof. The bottom portion 45 a connects the lower end portion of the stanchion support portion 45, the inner peripheral surface, and the outer peripheral surface of the moving shaft support portion 46. The stanchion 31 is placed on the bottom 45a by being inserted into the internal space of the stanchion support 45 from above. The moving shaft support portion 46 extends both vertically from the bottom portion 45 a, and the portion extending upward enters the internal space of the stanchion 31 from below.

  In the stanchion 31, the outer diameter is made smaller than the inner diameter of the stanchion support part 45, and the inner diameter is made larger than the outer diameter of the moving shaft support part 46. A fixing bolt 51 for fixing the stanchion 31 to the stanchion support 45 is attached to the stanchion support 45. The fixing bolt 51 is screwed to a bolt receiving portion 52 provided on the outer peripheral portion of the stanchion support portion 45 in a state where the fixing bolt 51 can penetrate through the outer peripheral portion of the stanchion support portion 45 and enter the inside. Yes. In this case, the fixing bolt 51 presses the outer peripheral part of the stanchion 31 inside the stanchion support part 45, so that the stanchion 31 is fixed to the stanchion support part 45.

  The mounting plate portion 47 is a flange that protrudes laterally from the outer peripheral portion of the stanchion support portion 45. The mounting plate portion 47 is disposed at a position spaced upward from the lower end portion of the stanchion support portion 45, and the lower end portion of the stanchion support portion 45 enters the digging portion 23 of the fixing hole 22A from above, Outside the counter digging portion 23, the top surface of the floor panel 16 is caught from above. In addition, the downward projecting dimension of the stanchion support part 45 from the mounting plate part 47 is the same as or smaller than the depth dimension of the countersink part 23, and the lower end surface of the stanchion support part 45 is countersunk. Regardless of whether or not the bottom surface of the portion 23 is in contact, the mounting plate portion 47 is in contact with the top surface of the floor panel 16.

  The moving shaft support 46 protrudes below the floor panel 16, but does not protrude below the upper flange 17 b of the floor beam 17.

  The moving shaft member 42 is a long bolt member, and has a head portion 42a disposed at the upper end. In the moving shaft member 42, the male screw portion extends downward from the head portion 42a, and the non-male screw portion 42b in which the male screw portion is not formed has a predetermined length (for example, 5 cm) from the lower end of the moving shaft member 42. ) Only upwards. The moving shaft member 42 is provided in a state of vertically passing through the internal space of the moving shaft support portion 46, and protrudes both upward and downward from the moving shaft support portion 46. In this case, the outer diameter of the moving shaft member 42 is made smaller than the inner diameter of the moving shaft support portion 46, and the length dimension (for example, 35 to 40 cm) of the moving shaft member 42 is larger than the length dimension of the moving shaft support portion 46. Has also been enlarged.

  The moving shaft member 42 is inserted into the moving shaft support portion 46 with the nut member 55 screwed to the male screw portion, and the nut member 55 is supported by the head 42a of the moving shaft member 42 and the moving shaft support. It arrange | positions between the parts 46. FIG. The nut member 55 has an outer diameter larger than the inner diameter of the moving shaft support portion 46, and the moving shaft member 42 is engaged with the moving shaft support portion 46 by being hooked on the moving shaft support portion 46 from above. This corresponds to a restricting member that restricts movement downward.

  The locking piece 43 is attached to the non-male thread portion 42 b of the moving shaft member 42, and is hooked from below on the upper flange 17 b of the floor girder 17 while extending along the lower surface of the floor panel 16. In this case, the locking piece 43 restricts the stanchion base 33 from moving upward relative to the floor panel 16 and the floor girder 17. The locking piece 43 is pivotally supported by the rotation shaft portion 61 with respect to the lower end portion of the non-male screw portion 42b. In this case, the locking piece 43 has a rotation tip end portion 56 that is the rotation tip end side, and a rotation base end portion 57 that is disposed closer to the rotation base end side than the rotation tip end portion 56. Yes.

  Further, the locking piece 43 extends in a direction perpendicular to the moving shaft member 42 and is in a state of being hooked from below on the lower end surface 46 a of the moving shaft support portion 46. In this case, the locking piece 43 is at a predetermined angle (about 90 degrees) with respect to the axial direction of the moving shaft member 42, and the moving shaft member 42 moves relatively upward with respect to the moving shaft support portion 46. To regulate. In this way, the locking piece 43 is hooked on both the moving shaft support portion 46 and the floor beam 17 from below, and even if it is not hooked on the floor beam 17, it is hooked on the moving shaft support portion 46. Thus, the relative position of the moving shaft member 42 with respect to the moving shaft support 46 is held. In the present embodiment, this state of the stanchion base 33 is referred to as a self-holding state. When the stanchion base 33 is in a self-holding state, the locking piece 43 is in a hooked state where it is hooked on the moving shaft support portion 46 from below. Further, the lower end surface 46 a of the moving shaft support 46 is orthogonal to the moving shaft member 42.

  When the stanchion pedestal 33 is in a self-holding state, the separation distance between the locking piece 43 and the nut member 55 is the same as the height of the pedestal main body 41 in the stanchion pedestal 33. In this case, the base main body 41 is sandwiched between the locking piece 43 and the nut member 55.

  Next, the stanchion base 33 that is not attached to the floor panel 16 will be described with reference to FIGS. 4 to 6. 4 is a front view of the stanchion base 33, FIG. 5 is a perspective view of the locking piece 43, and FIG. 6 is a diagram for explaining the operation of the locking piece. In FIG. 4, (a) shows a state where the locking piece 43 is hooked on the moving shaft support portion 46, and (a) shows a state where the locking piece 43 is separated from the moving shaft support portion 46.

  As shown in FIG. 4A, the nut member 55 is moved away from the locking piece 43 in the self-holding stanchion pedestal 33 with the rotation of the moving shaft member 42 (to the head 42a of the moving shaft member 42). When approaching, the state where the base body 41 is sandwiched between the locking piece 43 and the nut member 55 is released. In this case, the moving shaft member 42 is movable relative to the moving shaft support 46, and in this embodiment, this state of the stanchion base 33 is referred to as an operable state. That is, the stanchion pedestal 33 shifts from the self-holding state to the operable state when the nut member 55 is loosened with respect to the moving shaft support portion 46. When the stanchion pedestal 33 is in an operable state, the locking piece 43 shifts to a non-hooking state by separating from the moving shaft support portion 46.

  As shown in FIG. 4B, in the stanchion pedestal 33 in an operable state, the moving shaft member 42 is relatively positioned with respect to the moving shaft support 46 so that the head 42 a approaches the moving shaft support 46. By moving, the locking piece 43 is separated from the moving shaft support 46.

  As described above, the locking piece 43 is rotatable about the rotation shaft portion 61 as a rotation axis, and the axis of the rotation shaft portion 61 extends in a direction orthogonal to the moving shaft member 42. In this case, the locking piece 43 rotates in the direction in which the rotation tip portion moves in the vertical direction. The locking piece 43 rotates about the rotation shaft portion 61, thereby extending in a crossing state (a state indicated by a solid line) extending in a direction crossing the movement shaft member 42 and along the movement shaft member 42. It is possible to shift to an extended state (a state indicated by a broken line). The rotation shaft of the rotation shaft portion 61 is disposed at a position overlapping the center line of the moving shaft member 42.

  As shown in FIG. 5, the locking piece 43 is formed in a cylindrical shape as a whole. In the locking piece 43, a rotating tip 56 and a rotating base 57 are arranged side by side in the direction (longitudinal direction) in which the center line of the cylinder extends. The end portion 57 is integrally formed of a metal material. In the locking piece 43, the center line is the center line of the rotation tip end portion 56 and the rotation base end portion 57, and the outer diameter D <b> 1 of the rotation tip end portion 56 and the rotation base end portion 57 is the same. Each outer diameter. The outer diameter D1 of the locking piece 43 is smaller than the outer diameter D2 of the moving shaft support portion 46 (see FIG. 6A).

  The moving shaft member 42 is in a state of entering the internal space of the locking piece 43. The rotation base end portion 57 has outer peripheral openings 65 and 66 that open the inner space of the locking piece 43 in the radial direction, and an end surface opening portion 67 that opens the inner space of the locking piece 43 in the longitudinal direction. ing. The outer peripheral openings 65 and 66 are arranged at positions spaced apart in the circumferential direction on the outer peripheral portion of the locking piece 43 and face each other with the center line of the locking piece 43 interposed therebetween. The end surface opening 67 is disposed at one end of the locking piece 43, and the first outer periphery opening 65 of the outer periphery openings 65, 66 extends from the end surface opening 67 toward the rotation base end 57. The second outer peripheral opening 66 is separated from the end surface opening 67 toward the rotation base end 57.

  The outer peripheral portion of the locking piece 43 has a pair of side surface portions 71 that are opposed to each other with the outer peripheral opening portions 65 and 66 interposed therebetween, and connecting portions 72 and 73 that connect these side surface portions 71. Each side surface portion 71 is provided with a shaft hole 71a for attaching the rotation shaft portion 61, and the rotation shaft portion 61 pivots the movable shaft member 42 in a state of being spanned over the shaft holes 71a. I support. The moving shaft member 42 is in a state of entering between the pair of side surface portions 71 from the open region formed by the first outer peripheral opening 65 and the end surface opening 67, and relatively to the locking piece 43. By rotating, it is possible to go back and forth between the first outer peripheral opening 65 and the end face opening 67.

  When the locking piece 43 is in an intersecting state, the moving shaft member 42 enters the internal space of the locking piece 43 through the first outer peripheral opening 65 and protrudes from the locking piece 43 through the second outer peripheral opening 66. In this case, since the locking piece 43 has the second outer peripheral opening 66, the end of the moving shaft member 42 can shift to the intersecting state without being caught by the outer peripheral portion of the locking piece 43. Yes. On the other hand, when the locking piece 43 is in the extended state, the moving shaft member 42 enters the internal space of the locking piece 43 through the end face opening 67 and extends toward the rotating base end 57 as it is.

  The rotation shaft portion 61 is disposed at a position closer to the end surface opening 67 than the center position of the locking piece 43 in the longitudinal direction of the locking piece 43. Further, the internal space of the locking piece 43 is formed in the rotation base end portion 57, but is not formed in the rotation tip end portion 56. That is, while the rotation base end part 57 has a hollow part, the rotation front-end | tip part 56 does not have a hollow part. For these reasons, the rotation shaft portion 61 is disposed closer to the end surface opening 67 than the center position of the locking piece 43. For this reason, when the locking piece 43 is suspended by the moving shaft member 42 via the rotation shaft portion 61, the end surface opening 67 is directed to the upper end, and the rotation tip portion 56 is the rotation base end. It will be in the state extended from the part 57 toward the downward direction.

  The connecting portions 72 and 73 are disposed between the pair of side surface portions 71 in the radial direction of the rotation base end portion 57. Among these connecting portions 72 and 73, the first connecting portion 72 is disposed between the end surface opening 67 and the second outer peripheral opening 66 in the longitudinal direction of the locking piece 43, and the second connecting portion 73 is In the longitudinal direction of the locking piece 43, it is disposed between the rotating tip 56 and the first outer peripheral opening 65. In addition to the connecting portions 72 and 73, the rotating tip portion 56 also connects the pair of side surface portions 71. Further, the pair of side surface portions 71 corresponds to a pair of side surface portions, and the first connection portion 72 corresponds to a connection portion.

  The locking piece 43 has flat surfaces 75 and 76 extending in both the radial direction and the longitudinal direction. These flat surfaces 75 and 76 both extend along the string of the cylindrical locking piece 43, the first flat surface 75 is disposed at the rotating tip 56, and the second flat surface 76 is a rotating base. Arranged at the end 57. In the longitudinal direction of the locking piece 43, the first flat surface 75 extends over the entire rotation distal end portion 56, and the second flat surface 76 extends over the entire rotation base end portion 57. The flat surfaces 75 and 76 are arranged side by side in the longitudinal direction of the locking piece 43, and the second flat surface 76 is arranged at a position farther from the center line of the locking piece 43 than the first flat surface 75. Thus, a step is formed at the boundary between the flat surfaces 75 and 76.

  In the rotation base end portion 57, the second flat surface 76 extends along the peripheral edge portion of the first outer peripheral opening 65. In this case, the 2nd flat surface 76 is made into each side end surface of a pair of side part 71 and the 2nd connection part 73, and is formed in U shape.

  Of the both end faces of the locking piece 43, the end face on the rotating base end 57 side is an inclined end face 43 a that is inclined with respect to the radial direction of the locking piece 43. The inclined end surface 43a is formed by the end surfaces of the pair of side surface portions 71 and the first connecting portion 72, and has a curved shape that bulges outwardly in a curved manner. In the direction orthogonal to the axis of the rotation shaft portion 61, the distance between the inclined end surface 43a and the rotation shaft portion 61 is not uniform, and the inclined end surface 43a rotates with the portion on the first connecting portion 72 side. The separation distance from the shaft portion 61 is the largest, and the separation distance between the portion on the second flat surface 76 side and the rotation shaft portion 61 is the smallest. Further, in the inclined end surface 43a, the inclination angle with respect to the radial direction of the locking piece 43 is not uniform, the inclination angle of the portion on the first connecting portion 72 side is the smallest, and the second flat surface 76 is provided. The inclination angle of the side portion is the largest.

  In the direction orthogonal to the axis of the rotation shaft portion 61, the separation distance between the first flat surface 75 and the rotation shaft portion 61 is smaller than the separation distance between the inclined end surface 43 a and the rotation shaft portion 61. . The separation distance with respect to the rotation shaft portion 61 is the largest at the connecting portion with the inclined end surface 43a on the first flat surface 75, and the portion at the side of the rotation shaft portion 61 in the radial direction of the locking piece 43 is the smallest. It has become.

  As shown in FIG. 6A, when the locking piece 43 is extended at a position away from the moving shaft support 46, the lower end surface 46a of the moving shaft support 46 and the inclined end surface 43a of the locking piece 43 Are facing each other. In this case, the inclined end surface 43a is inclined with respect to the lower end surface 46a, and the separation distance between the end surfaces 43a and 46a is the first flat surface 75 (first outer peripheral opening 65) side in the radial direction of the locking piece 43. Gradually decreases (decreases) toward the second outer peripheral opening 66 side. In particular, when the locking piece 43 is viewed from the axial direction of the rotating shaft portion 61, the inclined end surface 43a and the lower end surface 43a are inferior to each other because the inclined end surface 43a swells toward the moving shaft support portion 46. The decreasing rate of the separation distance from the end surface 46a gradually decreases from the first flat surface 75 side toward the second outer peripheral opening 66 side in the radial direction of the locking piece 43.

  The lower end surface 46a of the moving shaft support portion 46 and the inclined end surface 43a of the locking piece 43 correspond to opposing surfaces. Further, the lower end surface 46a of the moving shaft support portion 46 corresponds to a receiving surface to which the locking piece 43 is pressed from below.

  As the moving shaft member 42 moves relative to the moving shaft support portion 46, the locking piece 43 approaches the moving shaft support portion 46 in an extended state, and the inclined end surface 43a of the locking piece 43 supports the moving shaft. When pressed against the lower end surface 46a of the portion 46, as shown in FIG. 6 (b), the locking piece 43 is moved to the moving shaft member 42 on the side where the first flat surface 75 faces upward (the side that transitions to the intersecting state). Begins to rotate. Note that, in the locking piece 43, the rotation base end portion 57 corresponds to a pressing portion that is pressed against the moving shaft support portion 46.

  In the locking piece 43, the inclined end surface 43 a is inclined so as to bulge from the one side to the other in the direction orthogonal to the axis of the rotation shaft portion 61 in the radial direction. In a state where the inclined end surface 43a overlaps the lower end surface 46a of the moving shaft support portion 46, as shown in FIG. 6 (c), the locking piece 43 approaches the moving shaft support portion 46 to further increase the rotation angle. growing. In this case, the inclined end surface 43 a of the locking piece 43 corresponds to a rotation promoting surface that promotes the rotation of the locking piece 43 relative to the moving shaft member 42 by being pressed against the lower end surface 46 a of the moving shaft support portion 46. .

  Then, as shown in FIG. 4B, when the moving shaft member 42 moves relative to the moving shaft support portion 46 until the locking piece 43 shifts to the intersecting state, The two flat surfaces 76 overlap the lower end surface 46 a of the moving shaft support portion 46. In this case, since neither the first flat surface 75 nor the lower end surface 46a is shaped to bulge outward, even if the locking piece 43 is further pressed against the moving shaft support portion 46, the locking piece 43 Does not rotate with respect to the moving shaft member 42. Therefore, the first flat surface 75 of the locking piece 43 corresponds to a state holding surface that holds the locking piece 43 in an intersecting state by being pressed against the lower end surface 46 a of the moving shaft support portion 46.

  Next, a procedure for attaching the stanchion pedestal 33 to the floor panel 16 in the building 10 will be described with reference to FIGS. 3 and 6 to 8. 7 and 8 are diagrams showing a procedure for attaching the stanchion base 33 to the floor panel 16.

  The attachment work of the stanchion pedestal 33 to the floor panel 16 is performed before the external wall panel 15 is attached to the second floor portion 13 of the building 10. First, as shown in FIG. 7A, the locking piece 43 of the stanchion base 33 is inserted into the fixing hole 22A of the floor panel 16 from above. In this case, with respect to the stanchion pedestal 33, the nut piece 55 is sufficiently loosened so that the locking piece 43 is spaced downward from the moving shaft support portion 46 so that the locking piece 43 is extended due to the deviation of its center of gravity. It is supposed to be retained.

  Here, in the locking piece 43, since the 1st connection part 72 is arrange | positioned to the side of the moving shaft member 42, when the locking piece 43 was hooked on the floor panel 16 when inserting in the fixed hole 22A, it is assumed. Also, the rotation of the locking piece 43 to the side where the first connecting portion 72 approaches the moving shaft member 42 is restricted. In this case, the operator only has to be careful not to rotate the locking piece 43 to the side of the rotation direction that transitions to the intersecting state, so that the operation of inserting the locking piece 43 into the fixing hole 22A is easy. Can be

  By inserting the locking piece 43 into the fixing hole 22A, the stanchion base 33 is placed on the floor panel 16 as shown in FIG. 7B. In this case, in the stanchion pedestal 33, the placing plate portion 47 is overlaid on the upper surface of the floor panel 16, and the lower end portion of the moving shaft support portion 46 protrudes downward from the fixed hole 22A.

  Then, as shown in FIG. 8A, the moving shaft member 42 is pulled upward. In this case, as described above, the inclined end surface 43a of the locking piece 43 is pressed against the lower end surface 46a of the moving shaft support portion 46 from below, so that the locking piece 43 rotates and shifts to an intersecting state. The second flat surface 76 of the stop piece 43 overlaps the lower end surface 46 a of the moving shaft support portion 46, and the first flat surface 75 overlaps the lower surface of the upper flange 17 b of the floor beam 17. Thereafter, by tightening the nut member 55 with respect to the moving shaft support portion 46, as shown in FIG. 8B, the stanchion base 33 is shifted to the self-holding state.

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

  The stanchion pedestal 33 is held in a self-holding state because the locking piece 43 is hooked with respect to the moving shaft support portion 46, and thus the locking piece 43 unintentionally shifts to a non-hooking state. That can be suppressed. For this reason, if the stanchion pedestal 33 is fixed to the floor panel 16 by using the latching piece 43 in the hooked state, it is suppressed that safety is lowered in the safety measure using the stanchion 31. it can. Further, unlike the configuration in which the locking piece 43 is held in a hooked state by being in contact with the floor panel 16 or the floor beam 17, the separation distance between the locking piece 43 and the moving shaft support portion 46 is set to the floor panel 16. Since the locking piece 43 can be held in a hooked state without being strictly adapted to the thickness of the floor, the shape of the floor beam 17 and the like, it is possible to suppress the structure of the stanchion base 33 from becoming complicated.

  By performing an easy operation of pulling the moving shaft member 42 upward with respect to the moving shaft support portion 46, the locking piece 43 shifts from the non-hooked state to the hooked state. Can reduce the work burden when fixing.

  Since the inclined end surface 43a of the locking piece 43 bulges outward in a curved surface, the longer the moving distance of the moving shaft member 42 relative to the moving shaft support portion 46 is, the larger the moving distance of the locking piece 43 relative to the moving shaft member 42 becomes. The rotation angle increases. Therefore, the operator can easily shift the locking piece 43 from the non-hooked state to the hooked state without using a special technique.

  When the locking piece 43 is in the hooked state, the second flat surface 76 of the locking piece 43 overlaps the lower end surface 46 a of the moving shaft support portion 46, so that the moving shaft member 42 moves relative to the moving shaft support portion 46. As long as it does not move downward, the locking piece 43 does not rotate unintentionally. In addition, since the second flat surface 76 extends from the end portion of the inclined end surface 43 a in the locking piece 43, the contact target with respect to the lower end surface 46 a of the moving shaft support portion 46 changes from the inclined end surface 43 a to the second flat surface 76. It ’s easier to migrate. That is, the locking piece 43 is easily shifted from the extended state to the intersecting state.

  In the locking piece 43, the moving shaft member 42 is disposed between the pair of side surface portions 71 forming the inclined end surface 43a. Therefore, even if the moving shaft member 42 is pulled upward, the locking piece 43 remains in an intersecting state. Even when it is difficult to shift to the extended state, even if the moving shaft member 42 is rotated left and right around the axis line to promote the shifting of the locking piece 43, the locking piece 43 is positioned below the moving shaft support portion 46. It can suppress shifting from side to side. That is, the operability when pulling up the moving shaft support 46 can be improved.

  In the locking piece 43, while the rotation base end portion 57 is hollow, the rotation tip end portion 56 is solid, so by utilizing the weight of the rotation base end portion 57, When the stanchion pedestal 33 is not in the self-holding state, a configuration in which the locking piece 43 extends and can easily shift to the state can be realized. For this reason, when an operator inserts the stanchion pedestal 33 into the fixing hole 22A of the floor panel 16 from above, it is possible to prevent the locking piece 43 from unintentionally shifting to an intersecting state.

  When the stanchion pedestal 33 is installed in the fixing hole 22A of the floor panel 16, the moving shaft support portion 46 protrudes downward from the floor panel 16, so that when the moving shaft member 42 moves in the vertical direction, the floor panel 16 Can be prevented from touching. For this reason, it is possible to suppress the floor panel 16 from being damaged or damaged by the male screw portion of the moving shaft member 42. On the other hand, since the moving shaft support portion 46 does not protrude below the upper flange 17b of the floor girder 17, it is possible to easily realize a configuration in which the locking piece 43 in the hooked state abuts on the upper flange 17b from below. For example, in a configuration in which the moving shaft support portion 46 protrudes below the upper flange 17b, the locking piece 43 does not contact the upper flange 17b unless the locking piece 43 has a shape that wraps upward from the lower end portion of the moving shaft support portion 46. It becomes difficult to contact. That is, there is a concern that the structure for shifting the state of the locking piece 43 becomes complicated.

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

  (1) In the above embodiment, the locking piece 43 is hooked on the upper flange 17b of the floor beam 17 from below while the stanchion pedestal 33 is attached to the floor panel 16, but the locking piece 43 is hooked. The target may be the lower flange 17c. Further, the locking piece 43 may be hooked on the lower surface of the floor panel 16 from below rather than being hooked on the floor girder 17. Even in this case, since the floor panel 16 has strength as a flooring material, the state in which the stanchion base 33 is fixed to the floor panel 16 can be suitably maintained.

  (2) In the above embodiment, the moving shaft support 46 protrudes downward from the floor panel 16 with the stanchion pedestal 33 placed on the floor panel 16. It does not have to protrude downward. Further, the moving shaft support portion 46 may protrude below the upper flange 17 b of the floor girder 17.

  (3) In the above embodiment, the mounting plate portion 47 extends laterally from the stanchion support portion 45 in the stanchion pedestal 33, but the mounting plate portion 47 extends laterally from the moving shaft support portion 46. It may extend toward. In this case, since the mounting plate portion 47 is disposed between the floor panel 16 and the stanchion support portion 45, the stanchion support portion 45 does not enter the spotting portion 23 of the fixing hole 22A. In this case, it is arranged at a position spaced upward from the fixing hole 22A.

  (4) The locking piece 43 may not be pivotally supported with respect to the moving shaft member 42 as long as the locking piece 43 is provided so as to be rotatable with respect to the moving shaft member 42. For example, it may be provided so as to be movable with respect to the moving shaft member 42 in a direction orthogonal to the rotation axis.

  (5) In the above embodiment, the inclined end surface 43a of the locking piece 43 has a curved shape bulging outward, but the inclined end surface 43a is directed outward by a plurality of flat surfaces. It may be a bulging shape. In addition, the inclined end surface 43a may be recessed toward the inside instead of bulging toward the outside, or may be a flat surface extending linearly without swelling or dent.

  (6) In the above embodiment, the inclined end surface 43a of the locking piece 43 has a shape inclined from one end to the other end in the radial direction of the locking piece 43. The shape may be inclined from the intermediate position toward both ends.

  (7) In the above embodiment, one of the both end surfaces of the locking piece 43 is the inclined end surface 43a, but each of the both end surfaces may be the inclined end surface 43a. In this case, as long as the locking piece 43 extends in the vertical direction, the moving shaft member 42 can be used regardless of which of the both ends of the locking piece 43 faces the lower end surface 46a of the moving shaft support portion 46. The locking piece 43 can be shifted to the hooked state (crossed state) by pulling up the upper side.

  (8) In the embodiment described above, the upper end surface of the locking piece 43 out of the upper end surface (inclined end surface 43a) and the lower end surface 46a of the moving shaft support 46 is in the horizontal direction. However, the lower end surface 46a of the moving shaft support 46 may be inclined with respect to the horizontal direction. In short, unless the upper end surface of the locking piece 43 and the lower end surface 46a of the moving shaft support 46 are parallel, the upper end surface of the locking piece 43 is pressed against the lower end surface 46a of the moving shaft support 46. Thus, a configuration in which the locking piece 43 rotates with respect to the moving shaft support portion 46 can be realized.

  In this case, if the lower end surface 46a of the moving shaft support portion 46 is inclined with respect to the upper end surface of the locking piece 43, the shape that bulges in a curved surface downward, the shape that is recessed upward, You may be made into the flat shape extended linearly without a swelling or a dent.

  (9) In the above embodiment, the first flat surface 75 is disposed closer to the center line of the locking piece 43 than the second flat surface 76 in the radial direction of the locking piece 43. The two flat surfaces 76 may be disposed closer to the center line of the locking piece 43 than the first flat surface 75. The second flat surface 76 and the first flat surface 75 The distance to the center line may be the same. In short, when the stanchion pedestal 33 is installed on the floor panel 16 and the locking piece 43 is in the hooked state, the second flat surface 76 overlaps the lower end surface 46a of the moving shaft support portion 46, and the first It is only necessary to realize a state in which the flat surface 75 overlaps the lower surface of the floor beam 17.

  (10) In the above embodiment, in the state in which the stanchion pedestal 33 is attached to the floor panel 16, the rotation tip 56 (first flat surface 75) of the locking piece 43 is formed on the upper flange 17 b of the floor girder 17. Although it overlapped with the lower surface, the rotating tip 56 may be spaced downward from the upper flange 17 b of the floor girder 17. Even in this case, the locking piece 43 can be restrained from moving upward on the stanchion base 33 by being hooked on the upper flange 17b of the floor girder 17 from below.

  (11) In the above embodiment, when the locking piece 43 is in the hooked state, the locking piece 43 is orthogonal to the moving shaft member 42, so that the second flat surface 76 of the locking piece 43 and the moving shaft Although the lower end surface 46a of the support portion 46 overlaps, the locking piece 43 itself may not be orthogonal to the moving shaft member 42 as long as the second flat surface 76 and the lower end surface 46a overlap. For example, in a configuration in which the locking piece 43 is locked not in a linearly extending cylindrical shape but in a curvedly extending cylindrical shape, even when the second flat surface 76 and the lower end surface 46a overlap each other, the locking piece 43 43 is not perpendicular to the moving shaft member 42.

  (12) In the above embodiment, the locking piece 43 is locked to the moving shaft support portion 46 from below, but the locking piece 43 is locked to the stanchion support portion 45 from below. A configuration may be used. For example, the stanchion support portion 45 protrudes below the floor panel 16 through the fixing hole 22A, and the inclined end surface 43a and the second flat surface 76 of the locking piece 43 overlap the lower end surface of the stanchion support portion 45 from below. To do.

  (13) In the above-described embodiment, the rotating tip end portion 56 of the locking piece 43 is hooked on the floor beam 17 in a state where the stanchion base 33 is fixed to the floor panel 16. May be caught on the floor girder 17 or the floor panel 16 from below. For example, the second flat surface 76 is configured to be caught on the upper flange 17b of the floor girder 17 from below. In this configuration, when the locking piece 43 is in the hooked state, the rotation base end portion 57 (second flat surface 76) extends laterally from the moving shaft support portion 46 toward the upper flange 17b.

  (14) In the above embodiment, the nut member 55 is tightened with respect to the moving shaft support portion 46, whereby the movement of the moving shaft member 42 with respect to the moving shaft support portion 46 is restricted. The movement of the moving shaft member 42 relative to the moving shaft support 46 may be restricted by fitting the fitting member between the shaft support 46 and the shaft support 46.

  (15) The stanchion pedestal 33 may be installed not on the building 10 under construction but on the building under renovation. In short, the stanchion pedestal 33 may be fixed to the floor panel 16 of the upper floor in the building under construction.

  DESCRIPTION OF SYMBOLS 10 ... Building, 16 ... Floor panel as floor material, 22, 22A ... Fixed hole as through-hole, 31 ... Stanchion as support | pillar, 33 ... Stanchion base as support | pillar support tool, 41 ... Base as support tool main body Main body, 42: moving shaft member as a shaft member, 43: locking piece as a hooking member, 43a: an inclined end surface as a facing surface and a rotation promoting surface, 46: a moving shaft support portion, 46a: a facing surface and a receiving surface Lower end surface, 56 ... rotation tip portion, 57 ... rotation base end portion as pressing portion, 61 ... rotation shaft portion, 71 ... side surface portion as side surface portion, 76 ... second flat as state holding surface surface.

Claims (9)

A column support that supports the column in a fixed state with respect to the floor material of the building,
The support body to be mounted on the floor material in a state in which the column is attached to support the column and at least a part of the support material is inserted into the through hole of the floor material from above.
A shaft member movable in the vertical direction with respect to the support body;
At the lower side of the support tool main body, attached to the shaft member, in a non-hooked state not hooked on the support tool main body from below, and in a state rotated to a position at a predetermined angle with respect to the axial direction of the shaft member. A hook member that transitions to a hooked state hooked on the support body from below,
With
The hook member moves from the unhooked state to the hooked state by moving the shaft member relatively upward with respect to the supporter main body, and when the shaft member is in the hooked state, A column support that is fixed to a floor material.   When the shaft member moves relatively upward with respect to the support tool body, the hook member rotates by being pressed against the support tool body from below to change from the unhooked state to the hooked state. The column support according to claim 1, wherein the column support is moved. The hook member and the support body have opposite surfaces that face each other when the hook member is in the non-hook state,
The opposing surface of the hook member and the opposing surface of the support body are different from each other in inclination angles inclined in the rotation direction of the hook member,
The support member according to claim 1 or 2, wherein the hook member rotates when the facing surface of the hook member is pressed against the facing surface of the support body from below. .   The strut support according to claim 3, wherein a separation distance of the hooking member from the rotation axis is gradually reduced on the facing surface of the hooking member in the rotation direction of the hooking member.   The column support according to claim 4, wherein the facing surface of the hook member is inclined in a curved manner so that an intermediate portion in the rotation direction of the hook member swells toward the other side. The support body is
Orthogonal to the moving direction of the shaft member, the hook member has a receiving surface pressed from below,
The hook member is
When the hook member is in the hooked state, a state holding surface that holds the state of the hook member by overlapping the receiving surface;
A rotation-promoting surface that is inclined with respect to the state-holding surface and that is pushed against the receiving surface as the shaft member moves upward;
The supporter according to any one of claims 1 to 5, characterized by comprising:   When the hook member is in the non-hanging state, the rotation promoting surface extends obliquely upward from the upper end of the state holding surface and is in the hooked state. The column support according to claim 6, wherein the rotation promoting surface extends in a lateral direction along the receiving surface from an upper end portion of the state holding surface. The hook member is
A pressing portion that is pressed from below onto the support body when the hook member transitions from the non-hanging state to the hooking state;
A wraparound portion that is provided on the rotation tip side of the pressing portion and is disposed at a position that wraps around the lower side of the floor material when the hooking member is in the hooked state,
Have
In the case where the hooking member is in the non-hanging state, the turning portion is provided with a rotating shaft portion that supports the hooking member so as to be rotatable with respect to the shaft member. The column support according to any one of claims 1 to 7, wherein the column support is disposed below the pressing portion. The pressing portion is
It has a pair of side surfaces that are opposed to each other with the shaft member interposed therebetween in the axial direction of the rotation shaft portion, and are respectively supported by the rotation shaft portion with respect to the shaft member,
The strut support tool according to claim 8, wherein both of the pair of side surface parts are pressed against the support tool main body from below.

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