Stanchion

Abstract

To provide a stanchion that allows construction work to be carried out while it is installed on a parapet. [Solution] The stanchion 10 includes a first arm portion 21 and a second arm portion 22 extending in a first direction D1 and spaced apart in a second direction D2 perpendicular to the first direction D1, a cross section 30 extending in the second direction D2 and connecting the first arm portion 21 and the second arm portion 22, a contact portion 25 provided on the first arm portion 21, and a movable portion 40 provided on the second arm portion 22 so as to be displaceable in the second direction D2. The contact portion 25 and the movable portion 40 are configured to face each other in the second direction D2 and be able to clamp the parapet Bp, and the cross-bridge portion 30 includes a first cross-bridge portion 31 connected to the first arm portion 21, a second cross-bridge portion 32 connected to the second arm portion 22, and an axial member 33 that connects the first cross-bridge portion 31 and the second cross-bridge portion 32 so that they can rotate relative to each other, and the axial member 33 is arranged to extend in a third direction D3 that is perpendicular to the first direction D1 and the second direction D2.

Description

[Technical Field]

[0001] The present invention relates to a stanchion for installing a handrail and / or a protective net on a parapet. [Background technology]

[0002] Stanchions for installing handrails, protective nets, etc. (hereinafter referred to as handrails, etc.) on parapets have been known (see Patent Documents 1 and 2). The stanchions disclosed in Patent Documents 1 and 2 are used to install handrails, etc. around the perimeter of the roof of a building, and contribute to ensuring the safety of workers working on the roof. The conventional stanchions disclosed in Patent Documents 1 and 2 are configured to include an abutment member that abuts against the top surface of the parapet, an abutment member that abuts against one side of the parapet, and a pressing member that presses against the other side of the parapet. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2017-193831 [Patent Document 2] Utility Model Registration No. 3202009 Summary of the Invention [Problem to be solved by the invention]

[0004] During construction and renovation work on buildings, waterproofing treatment (waterproofing work) is performed continuously from the roof floor to the parapet, painting of the floor (painting work), resin injection into the building frame, and other processes are performed. When the stanchions disclosed in Patent Documents 1 and 2 are installed, the areas where the stanchions contact the parapet cannot be subjected to the various treatments described above, leaving untreated areas (unused). For this reason, conventional approaches include removing the stanchions before performing the various treatments described above, or performing work on the areas where the stanchions contact the parapet at a later date. The former approach poses a safety issue in that the safety of workers performing the work is insufficient, while the latter approach poses a quality issue in that there are many joints that can become weak points in the waterproofing layer, coating, etc.

[0005] The present disclosure aims to provide a stanchion that can be installed on a parapet and still be installed for construction. [Means for solving the problem]

[0006] (1) The stanchion disclosed herein is a stanchion for installing handrails and / or protective nets on a vertical wall-shaped parapet, and comprises a first arm portion and a second arm portion extending in a first direction and spaced apart in a second direction perpendicular to the first direction, a cross section extending in the second direction and connecting the first arm portion and the second arm portion, a contact portion provided on the first arm portion, and a movable portion provided on the second arm portion so as to be displaceable in the second direction, the contact portion and the movable portion being arranged opposite each other in the second direction and configured so as to be able to clamp the parapet by the contact portion and the movable portion, the cross section being configured to include a first cross section connected to the first arm portion, a second cross section connected to the second arm portion, and an axial member connecting the first cross section and the second cross section so as to be rotatable relative to each other, and the axial member being arranged to extend in a third direction perpendicular to the first direction and the second direction.

[0007] In a stanchion configured in this manner, the second cross section can be rotated around the axis of the shaft member, and the movable section can be moved away from the parapet while the stanchion is installed on the parapet. Therefore, with the stanchion of the present disclosure, construction can be carried out while the stanchion is installed on the parapet.

[0008] (2) It is preferable that the stanchion of the (1) aspect of the present disclosure comprises a first member constituting the first arm portion and the first cross portion, a second member constituting the second arm portion, and a third member constituting the second cross portion. According to this configuration, the stanchion can be easily configured by combining the first member, the second member, and the third member.

[0009] (3) In the stanchion of the (1) or (2) aspect of the present disclosure, it is preferable that the second cross-section is configured to be rotatable around the axis of the shaft member between a first position parallel to the second direction and a second position inclined with respect to the second direction. In a stanchion configured in this manner, the second cross-section can be rotated around the axis of the shaft member between the first position and the second position, and the movable section can be moved away from the parapet while the stanchion is installed on the parapet. Therefore, with the stanchion of the present disclosure, construction can be carried out while the stanchion is installed on the parapet.

[0010] (4) In the stanchion of the (3) aspect of the present disclosure, it is preferable that the cross section has a first through hole that penetrates the first cross section and the second cross section in the third direction when the second cross section is positioned at the first position, a second through hole that penetrates the first cross section and the second cross section in the third direction when the second cross section is positioned at the second position, and a first pin that is inserted into the first through hole or the second through hole. A stanchion configured in this manner can easily hold the second cross section in a first position by inserting the first pin into the first through hole, and can easily hold the second cross section in a second position by inserting the first pin into the second through hole.

[0011] (5) In the stanchion of the (1) or (2) aspect of the present disclosure, it is preferable that the movable part includes a movable plate having an opposing surface that can face the abutment part, a screw shaft that supports the movable plate so that it can be displaced in the second direction, and a nut that is provided on the second arm part and into which the screw shaft is screwed. A stanchion having such a configuration can easily configure the movable portion. The stanchion of the present disclosure can thereby simplify the configuration of the stanchion.

[0012] (6) In the stanchion according to any one of the aspects (1) to (5) of the present disclosure, it is preferable that the second arm portion is configured to be displaceable in the second direction along the cross-bridge portion. The stanchion with this configuration allows the distance between the first arm portion and the second arm portion to be easily adjusted depending on the thickness of the parapet, and therefore the stanchion of the present disclosure can be installed on parapets of various sizes and shapes.

[0013] (7) In the stanchion of the aspect (6) of the present disclosure, it is preferable that the second arm portion has a third through hole penetrating in the third direction, the cross member has a plurality of fourth through holes penetrating in the third direction, and the cross member has a second pin inserted into the third through hole and the fourth through hole. A stanchion configured in this manner can easily maintain the separation distance between the first arm portion and the second arm portion.

[0014] (8) In the stanchion according to any one of the aspects (1) to (7) of the present disclosure, the contact portion is preferably made of an elastic member. A stanchion configured in this manner can prevent damage to the exterior wall of a building due to contact between the abutment portion and the exterior wall.

[0015] (9) In the stanchion according to any one of the aspects (1) to (8) of the present disclosure, it is preferable that the first arm portion has a first fixing hole formed therein for fixing a single pipe clamp to the first arm portion. Stanchions with this configuration allow single pipes to be easily installed along the periphery of a building by installing single pipe clamps in the first fixing holes.The single pipes installed in the stanchions can then be used to easily install handrails and / or protective nets along the periphery of the building.

[0016] (10) In the stanchion according to any one of the aspects (1) to (9) of the present disclosure, it is preferable that the horizontal portion has a second fixing hole formed therein for fixing a single pipe clamp to the horizontal portion. Stanchions with this configuration can easily install single pipes along the inside surface of the parapet by installing single pipe clamps in the second fixing holes.The single pipes installed in the stanchions can then be used to easily support the cross section from the floor of the building roof. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 1 is a schematic side view showing a stanchion of the present disclosure. [Figure 2A] FIG. 2A is a schematic side view of a first member that constitutes the stanchion of the present disclosure. [Figure 2B] FIG. 2B is a schematic plan view of a first member that constitutes the stanchion of the present disclosure. [Figure 3A] FIG. 3A is a schematic side view of a second member constituting the stanchion of the present disclosure. [Figure 3B] FIG. 3B is a schematic front view of a second member constituting the stanchion of the present disclosure. [Figure 4A]FIG. 4A is a schematic side view of a third member constituting the stanchion of the present disclosure. [Figure 4B] FIG. 4B is a schematic plan view of a third member constituting the stanchion of the present disclosure. [Figure 5] FIG. 5 is a side view schematic diagram showing the state in which the stanchion of the present disclosure is installed on a parapet. [Figure 6] FIG. 6 is a perspective schematic diagram showing the state in which the stanchions are installed on the parapet. [Figure 7] FIG. 7 is a schematic side view showing a pivoted state of the cross section of the stanchion of the present disclosure. [Figure 8] FIG. 8 is a perspective schematic view showing a state in which the cross section of the stanchion is rotated while the stanchion is installed on the parapet. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, an embodiment of the stanchion of the present disclosure will be described with reference to the drawings.

[0019] (Overall configuration of the stanchion) Fig. 1 is a schematic side view showing a stanchion according to the present disclosure. A stanchion is a temporary construction material used as a support for installing handrails and / or protective nets for construction work on a parapet installed around the roof of a building. Fig. 1 shows a stanchion 10, which is one embodiment of the stanchion according to the present disclosure.

[0020] In the following description, a first direction D1, a second direction D2, and a third direction D3 that are perpendicular to each other are defined for the directions of the stanchion 10. When the stanchion 10 is installed on the parapet, the first direction D1 is the height direction (up and down direction) of the parapet and a direction parallel to this, the second direction D2 is the thickness direction of the parapet (a horizontal direction perpendicular to the exterior wall surface of the building) and a direction parallel to this, and the third direction D3 is the width direction of the parapet (a horizontal direction parallel to the exterior wall surface of the building) and a direction parallel to this.

[0021] 1 , the stanchion 10 of the present disclosure comprises a first member 11, a second member 12, and a third member 13. The entire framework of the stanchion 10 is formed by combining the first member 11, the second member 12, and the third member 13. The stanchion 10 formed by combining the first member 11, the second member 12, and the third member 13 comprises a first arm portion 21, a second arm portion 22, and a cross portion 30.

[0022] As shown in FIG. 1 , the first member 11 constitutes a first arm portion 21 and a first horizontal portion 31. The first horizontal portion 31 constitutes a part of the horizontal portion 30. The second member 12 constitutes a second arm portion 22. The third member 13 constitutes a second horizontal portion 32. The second horizontal portion 32 constitutes a part of the horizontal portion 30.

[0023] (Regarding the first component) Fig. 2A is a schematic side view of a first member constituting the stanchion of the present disclosure. Fig. 2B is a schematic plan view of the first member constituting the stanchion of the present disclosure. Figs. 2A and 2B show the first member 11 alone. As shown in Figs. 2A and 2B, the first member 11 includes a first arm portion 21 and a first cross portion 31.

[0024] The first arm portion 21 has a main body portion 21a extending in the first direction D1. The main body portion 21a is made of a steel material in the shape of a square pipe. Both ends of the main body portion 21a in the first direction D1 are sealed with steel plates.

[0025] The first member 11 includes a first horizontal section 31 extending in the second direction D2 from an end of the main body 21a (first arm 21) on one side in the first direction D1 (the upper side in the installed state). The first horizontal section 31 constitutes a part of the horizontal section 30, which will be described later.

[0026] The first horizontal section 31 has a main body 31a extending in the second direction D2. The main body 31a is made of a plate material that has been bent into a substantially C-shape in a plan view (see FIG. 2B). The first horizontal section 31 has a shaft hole 31b that penetrates the main body 31a in the third direction D3. The first horizontal section 31 has a pin hole 31c that penetrates one and / or the other side surface of the main body 31a in the third direction D3.

[0027] Main body 21a (first arm 21) has first clamp fixing hole 23 formed in one end face in first direction D1 (top face in installed state). First arm 21 is fitted with a single pipe clamp (see FIG. 5) for fixing a single pipe, using first clamp fixing hole 23.

[0028] (Concerning the contact part) As shown in FIGS. 1, 2A, and 2B, the stanchion 10 further includes an abutment portion 25 extending in the second direction D2 at the other (lower) end of the first member 11 (first arm portion 21) in the first direction D1. The abutment portion 25 constitutes the portion of the first arm portion 21 (first member 11) that abuts against the parapet. The abutment portion 25 is made of an elastic material (e.g., rubber). In the stanchion 10 of the present disclosure, it is sufficient that at least the portion of the abutment portion 25 that contacts the parapet is made of an elastic material (e.g., rubber), and it may also be made of an inelastic material. By configuring the abutment portion 25 to include an elastic material (e.g., rubber), the stanchion 10 of the present disclosure can prevent damage to the portion of contact between the first arm portion 21 and the parapet.

[0029] (Regarding the second component) Fig. 3A is a schematic side view of a second member constituting the stanchion of the present disclosure. Fig. 3B is a schematic front view of the second member constituting the stanchion of the present disclosure. Figs. 3A and 3B show the second member 12 alone. As shown in Figs. 3A and 3B, the second member 12 constitutes a second arm portion 22.

[0030] The second arm portion 22 has a main body portion 22a extending in the first direction D1. The main body portion 22a is made of a steel material in the shape of a square pipe. Both ends of the main body portion 22a in the first direction D1 are sealed with steel plates.

[0031] The second arm portion 22 includes a connecting portion 22b extending from an end portion of the main body portion 22a on one side in the first direction D1 (upper side in the installed state) toward the other side in the first direction D1 (upper side in the installed state). The connecting portion 22b is made of a plate material that has been bent into a substantially C-shape in a front view (see FIG. 3B). The connecting portion 22b includes a rectangular through-hole 22c that penetrates in the second direction D2. The second arm portion 22 is configured to be displaceable along the second horizontal portion 32 (horizontal portion 30) by inserting the third member 13 (second horizontal portion 32) into the through-hole 22c.

[0032] The second arm portion 22 further includes a pin hole (third pin hole) 24 that penetrates one and / or the other side surface of the connecting portion 22b in the third direction D3.

[0033] The second arm portion 22 has nuts 43 provided on the other side in the first direction D1 (the lower side in the installed state) on one and the other side surfaces in the second direction D2. The nuts 43 constitute a part of the movable portion 40, which will be described later. The second member 12 (second arm portion 22) has through holes (not shown) formed coaxially with the nuts 43 on the one and the other side surfaces in the second direction D2.

[0034] (Regarding the third component) Fig. 4A is a schematic side view of a third member constituting the stanchion of the present disclosure. Fig. 4B is a schematic plan view of the third member constituting the stanchion of the present disclosure. Figs. 4A and 4B show the third member 13 alone. As shown in Figs. 4A and 4B, the third member 13 constitutes the second bridging portion 32. The second bridging portion 32 is a part of the bridging portion 30.

[0035] The second cross section 32 has a main body 32a extending in the second direction D2. The main body 32a is made of a steel material having a square pipe shape. Both ends of the main body 32a in the second direction D2 are sealed with steel plates.

[0036] The second horizontal section 32 includes a connecting section 32b extending to one side in the second direction D2 at one end of the main body section 32a in the second direction D2. The connecting section 32b is formed of a pair of steel plates provided on one side and the other side in the third direction D3 at one end of the main body section 32a in the second direction D2. The connecting section 32b includes a shaft hole 32c penetrating in the third direction D3. In the stanchion 10, the shaft hole 32c is arranged coaxially with the shaft hole 31b of the first horizontal section 31 (first member 11) in the third direction D3. The shaft hole 31b and the shaft hole 32c form the shaft hole 30a in the horizontal section 30.

[0037] The connecting portion 32b further includes a pin hole 32d and a pin hole 32e formed on one and / or the other side surface in the third direction D3.

[0038] The third member 13 (second horizontal portion 32) has a second clamp fixing hole 35 formed in a side surface (upper surface) on one side in the first direction D1, on the other side in the second direction D2.

[0039] (About shaft components) As shown in FIG. 1, the stanchion 10 of the present disclosure further includes a shaft member 33. The shaft member 33 is a shaft that connects the first horizontal section 31 and the second horizontal section 32 so that they can rotate relative to each other, and is made of a round steel bar. The shaft member 33 is fitted into the shaft holes 31b and 32c (in other words, the shaft hole 30a) that are arranged coaxially in the third direction D3. The shaft member 33 is inserted into the shaft hole 30a of the horizontal section 30, and is thereby provided to extend in the third direction D3.

[0040] In the stanchion 10 of the present disclosure, the shaft member 33 and the first horizontal portion 31 support the second horizontal portion 32 so as to be rotatable about the axis of the shaft member 33.

[0041] (About the cross section) As shown in Fig. 1, the stanchion 10 of the present disclosure includes a bridging portion 30. The bridging portion 30 is configured by a first bridging portion 31, a second bridging portion 32, and a shaft member 33. The bridging portion 30 includes a shaft hole 30a formed by arranging a shaft hole 31b of the first bridging portion 31 and a shaft hole 32c of the second bridging portion 32 coaxially in the third direction D3. The bridging portion 30 is configured by inserting the shaft member 33 into the shaft hole 30a (shaft hole 31b and shaft hole 32c).

[0042] The horizontal portion 30 has a pin hole (first pin hole) 30b and a pin hole (second pin hole) 30c. The pin hole 30b is formed by rotating the second horizontal portion 32 to a position (first position P1 described later) where the pin holes 31c and 32d are coaxially arranged in the third direction D3. The pin hole 30c is formed by rotating the second horizontal portion 32 to a position (second position P2 described later) where the pin holes 31c and 32e are coaxially arranged in the third direction D3. In the stanchion 10 of the present disclosure, a pin 36 described later is inserted into the pin hole 30b or the pin hole 30c.

[0043] The horizontal section 30 has a plurality of pin holes (fourth pin holes) 34. The pin holes 34 are formed side by side in the second direction D2 on one and / or the other side surface of the second horizontal section 32 in the third direction D3. A pin 26, which will be described later, is inserted through the pin holes 34 in a state where the pin holes 34 are coaxial with the pin holes 24 formed in the second arm section 22 in the third direction D3.

[0044] (About moving parts) 1, the stanchion 10 of the present disclosure further includes a movable part 40. The movable part 40 includes a movable plate 41, a screw shaft 42, and a nut 43. The movable plate 41 is disposed opposite the abutting part 25. The abutting part 25 and the movable plate 41 are configured to be able to clamp an object disposed between the abutting part 25 and the movable plate 41.

[0045] As shown in FIG. 1 , the movable plate 41 is a flat member and has an opposing surface 44 facing the abutment portion 25. The movable plate 41 is connected to a screw shaft 42 on the surface opposite (back side) of the opposing surface 44. The screw shaft 42 is rotatably connected to the movable plate 41 via, for example, a bearing-like member (not shown). The screw shaft 42 is threadedly engaged with a nut 43, thereby being provided to the second arm portion 22. When the screw shaft 42 is rotated around its axis, the position at which it is threaded with the nut 43 changes, thereby displacing the screw shaft 42 in the axial direction. The distance between the movable plate 41 and the abutment portion 25 is adjusted in accordance with the axial displacement of the screw shaft 42. As such, in the stanchion 10 of the present disclosure, the movable portion 40 has a simple configuration. Therefore, the stanchion 10 of the present disclosure can have a simple configuration.

[0046] (About pins) As shown in FIG. 1, the stanchion 10 of the present disclosure further includes a pin 26 and a pin 36 . The pin 26 is used by being inserted through the pin holes 24 and 34 that are coaxially arranged in the third direction D3. In the stanchion 10, the pin 26 is inserted through the pin holes 24 and 34, so that the displacement of the second arm portion 22 in the second direction D2 is restricted and the second arm portion 22 is positioned relative to the cross portion 30.

[0047] The pin 36 is used by being inserted into the pin hole 30b or the pin hole 30c. When the pin 36 is inserted into the pin hole 30b, the second horizontal portion 32 is held at the first position P1, as the rotation of the shaft member 33 about the axis of the second horizontal portion 32 is restricted. When the pin 36 is inserted into the pin hole 30c, the rotation of the shaft member 33 about the axis of the second horizontal portion 32 is restricted, as the second horizontal portion 32 is held at the second position P2.

[0048] (Regarding the installation status of stanchions) Fig. 5 is a side schematic view showing the stanchion of the present disclosure installed on a parapet. Fig. 6 is a perspective schematic view showing the stanchion installed on a parapet. Figs. 5 and 6 show the stanchion 10 installed on building B. The stanchion 10 of the present disclosure is installed on a parapet Bp located on the roof of building B. In this description, the floor surface of the roof of building B is referred to as floor surface RF, the outer wall surface of building B is referred to as outer wall surface Bw, the outer surface of parapet Bp is referred to as outer surface Bp1, the inner surface of parapet Bp is referred to as inner surface Bp2, and the top surface of parapet Bp is referred to as top surface Bp3.

[0049] 5, the stanchion 10 of the present disclosure is installed on the parapet Bp by bringing the abutment portion 25 into contact with the outer surface Bp1 of the parapet Bp and pressing the inner surface Bp2 of the parapet Bp with the movable portion 40 to clamp the parapet Bp in the thickness direction. For example, when the screw shaft 42 is rotated in one direction (forward direction) about the axis, the movable plate 41 is displaced in a direction that reduces the distance between the movable plate 41 and the abutment portion 25, and when the screw shaft 42 is rotated in the other direction (reverse direction) about the axis, the movable plate 41 is displaced in a direction that increases the distance between the movable plate 41 and the abutment portion 25. By rotating the screw shaft 42 in the forward direction until the distance between the movable plate 41 and the abutment portion 25 is equal to or less than the thickness of the parapet Bp, the stanchion 10 clamps the parapet Bp between the movable plate 41 and the abutment portion 25, and is thereby installed on the parapet Bp.

[0050] In the stanchion 10 installed on the parapet Bp, the first arm portion 21 extending in the first direction D1 is located outside the building B relative to the outer surface Bp1 of the parapet Bp, and only the abutment portion 25 abuts against the outer surface Bp1. In addition, in the stanchion 10 installed on the parapet Bp, the second arm portion 22 extending in the first direction D1 is located inside the building B relative to the inner surface Bp2 of the parapet Bp. In this case, the first direction D1 of the stanchion 10 is parallel to the height direction of the parapet Bp (building B).

[0051] In the stanchion 10 installed on the parapet Bp, the bridging portion 30 extending in the second direction D2 is located above the upper surface Bp3 of the parapet Bp. In this case, the second direction D2 of the stanchion 10 is parallel to the thickness direction of the parapet Bp. In this way, in the stanchion 10 of the present disclosure, the bridging portion 30 does not contact the upper surface Bp3 of the parapet Bp.

[0052] A plurality of stanchions 10 are installed along a direction (third direction D3) perpendicular to the height and thickness directions of the parapet Bp. A plurality of stanchions 10 installed side by side in the third direction D3 are connected by attaching single pipe clamps 51 to the first clamp fixing holes 23 and fixing single pipes 50 to the single pipe clamps 51. These single pipes 50 are placed outside the outer wall surface Bw of the building B. In the following description, the single pipes 50 placed outside the outer wall surface Bw of the building B are also referred to as single pipes 50A. The single pipes 50A themselves can be used as handrails, and are also used as support members for attaching the protective net 60.

[0053] Furthermore, multiple stanchions 10 installed side by side in the third direction D3 are connected by attaching single pipe clamps 51 to the second clamp fixing holes 35 and fixing single pipes 50 to the single pipe clamps 51. These single pipes 50 are arranged inside the inner surface Bp2 of the parapet Bp. In the following description, the single pipes 50 arranged inside the inner surface Bp2 of the parapet Bp will also be referred to as single pipes 50B. The single pipes 50B are supported by the floor surface RF via jacks 70 installed on the roof floor RF and the single pipes 50 attached to the jacks 70. As a result, the cross section 30 is supported by the floor surface RF via the jacks 70 and the single pipes 50.

[0054] In this way, the stanchion 10 of the present disclosure can install a handrail (single pipe 50A) and / or a protective net 60 on the parapet Bp present in the building B.

[0055] (Procedure for rotating the cross section) Fig. 7 is a schematic side view showing the rotational state of the cross-bridge portion of the stanchion of the present disclosure. Fig. 8 is a schematic perspective view showing the rotational state of the cross-bridge portion of the stanchion installed on the parapet. As shown in Fig. 7, the stanchion 10 of the present disclosure allows the cross-bridge portion 30 to rotate. Specifically, the stanchion 10 of the present disclosure allows the second cross-bridge portion 32 to rotate around the axis of the shaft member 33 when installed on the parapet Bp.

[0056] In the stanchion 10, the second cross section 32 is configured to be rotatable between a first position P1 in which it is linear with the first cross section 31 in the second direction D2, and a second position P2 in which it is inclined with respect to the second direction D2.

[0057] The first position P1 is a position where the opposing surface 44 of the movable plate 41 is approximately parallel to the inner surface Bp2 of the parapet Bp. Therefore, when the second cross section 32 is disposed at the first position P1, the stanchion 10 can clamp the parapet Bp in the thickness direction (second direction D2) with the movable section 40 and the abutment section 25.

[0058] The second position P2 is a position where the extension direction of the second horizontal portion 32 is inclined with respect to the extension direction of the first horizontal portion 31 (second direction D2). The second horizontal portion 32 is placed in the second position P2 by lifting the end of the second horizontal portion 32 opposite to the connection side with the first horizontal portion 31 to a position higher than the first horizontal portion 31. In other words, the second position P2 is a position where the extension direction of the second horizontal portion 32 is inclined with respect to the extension direction of the first horizontal portion 31 (second direction D2) as a result of lifting the end of the second horizontal portion 32 opposite to the connection side with the first horizontal portion 31 to a position higher than the first horizontal portion 31.

[0059] By disposing the second cross section 32 at the second position P2, the stanchion 10 can separate the movable section 40 from the inner surface Bp2 of the parapet Bp. In this state, the inner surface Bp2 and the top surface Bp3 of the parapet Bp are ready for waterproofing work, painting work, resin injection work, and the like (hereinafter also referred to as various types of work).

[0060] The stanchion 10 is used with the second horizontal section 32 positioned at the first position P1 except when various rooftop construction work is being carried out. In this state, the pin 36 is inserted into the pin hole 30b of the stanchion 10, and the second horizontal section 32 is easily maintained at the first position P1.

[0061] When various construction works are carried out on the roof, the stanchion 10 is used with the second horizontal section 32 disposed at the second position P2. In this state, the pin 36 is inserted into the pin hole 30c of the stanchion 10, and the second horizontal section 32 is easily maintained at the second position P2.

[0062] (Construction procedure when using the stanchions disclosed herein) The stanchion 10 of the present disclosure is a temporary material for installing a handrail (single pipe 50) and / or a protective net 60. The handrail (single pipe 50) and the protective net 60 are safety equipment for preventing workers working on the roof of building B from falling or materials from falling from the roof. For this reason, the stanchion 10 is installed early once construction work on the skeleton C of building B has been completed and a parapet Bp has been formed on the roof. Various construction work carried out on the roof of building B is carried out with the handrail (single pipe 50) and / or the protective net 60 supported by the stanchion 10, ensuring the safety of workers.

[0063] As various construction projects on the roof of building B progress, for example, when waterproofing work is performed, the single pipes 50B, jacks 70, and single pipes 50 located inside the inner surface Bp2 of the parapet Bp are dismantled and removed. This allows the second cross-section 32 to be rotated to the second position P2. Then, for the partial stanchions 10 corresponding to the construction area of ​​the waterproof layer Wp during the waterproofing work, the second cross-section 32 is rotated to the second position P2, and the waterproof layer Wp is constructed in that construction area. In this state, the continuous waterproof layer Wp can be constructed from the roof floor RF to the inner surface Bp2 and top surface Bp3 of the parapet Bp. After a predetermined curing period has elapsed, the area where the waterproof layer Wp has been constructed is restored to its original state by rotating the second cross-section 32 to the first position P1, allowing the stanchions 10 to function as support members for the handrails (single pipes 50) and / or protective net 60.

[0064] By using the stanchion 10 configured in this manner, it is no longer necessary to remove the stanchion 10 when carrying out various types of work such as waterproofing, making it possible to fully ensure the safety of workers from the initial to final stages of rooftop construction work, and also making it possible to eliminate seams in the waterproof layer Wp that would otherwise occur due to the installation of the stanchion 10. As a result, by using the stanchion 10 of the present disclosure, it is possible to reliably ensure the safety of rooftop construction work, and to improve the quality of the waterproof layer Wp, compared to when conventional stanchions are used.

[0065] (Regarding modified examples of the stanchion of the present disclosure) The stanchion 10 shown in this embodiment exemplifies a case in which the second arm portion 22 is configured to be displaceable in the second direction D2 along the cross section 30, but in the stanchion 10 of the present disclosure, the second arm portion 22 may be configured to be unable to displace in the second direction D2. Also, in the stanchion 10 of the present disclosure, the second arm portion 22 may be configured to be displaceable in the first direction D1.

[0066] (Operations and Effects of the Present Embodiment) (1) The stanchion 10 of the above embodiment is a stanchion for installing a handrail and / or a protective net on a standing wall-shaped parapet Bp, and includes a first arm portion 21 and a second arm portion 22 extending in a first direction D1 and spaced apart in a second direction D2 perpendicular to the first direction D1, a cross section 30 extending in the second direction D2 and connecting the first arm portion 21 and the second arm portion 22, a contact portion 25 provided on the first arm portion 21, and a cross section 30 provided on the second arm portion 22. and a movable part 40 that is provided so as to be displaceable in the second direction D2, the abutment part 25 and the movable part 40 are arranged opposite each other in the second direction D2 and are configured so as to be able to clamp the parapet Bp by the abutment part 25 and the movable part 40, and the cross-bridge part 30 is configured to include a first cross-bridge part 31 connected to the first arm part 21, a second cross-bridge part 32 connected to the second arm part 22, and a shaft member 33 that connects the first cross-bridge part 31 and the second cross-bridge part 32 so as to be rotatable relative to each other. In the stanchion 10, the shaft member 33 is provided so as to extend in a third direction D3 that is perpendicular to the first direction D1 and the second direction D2.

[0067] With the stanchion 10 configured in this manner, the second cross section 32 can be rotated around the axis of the shaft member 33. With the stanchion 10 configured in this manner, the movable section 40 can be separated from the parapet Bp when the stanchion 10 is installed on the parapet Bp. Therefore, with the stanchion 10, various types of work (waterproofing work, painting work, resin injection work, etc.) can be carried out while the stanchion 10 is installed on the parapet Bp.

[0068] (2) The stanchion of the above aspect (1) of the present disclosure comprises a first member 11 constituting the first arm portion 21 and the first cross portion 31, a second member 12 constituting the second arm portion 22, and a third member 13 constituting the second cross portion 32. According to this configuration, the stanchion 10 can be easily configured by combining a small number of members, namely, the first member 11, the second member 12, and the third member 13.

[0069] (3) In the stanchion 10 of the above embodiment, the second cross section 32 is configured to be rotatable around the axis of the shaft member 33 between a first position P1 that is parallel to the second direction D2 and a second position P2 that is inclined with respect to the second direction D2. The stanchion 10 configured in this manner can rotate the second cross-section 32 between a first position P1 and a second position P2 around the axis of the shaft member 33. When the stanchion 10 configured in this manner is installed on the parapet Bp, the second cross-section 32 can be rotated to the second position P2, thereby moving the movable section 40 away from the parapet. Therefore, with the stanchion 10, various construction works can be carried out while it is installed on the parapet Bp.

[0070] (4) In the stanchion 10 of the above embodiment, it is preferable that the cross section 30 has a pin hole 30b that penetrates the first cross section 31 and the second cross section 32 in the third direction D3 when the second cross section 32 is positioned at the first position P1, a pin hole 30c that penetrates the first cross section 31 and the second cross section 32 in the third direction D3 when the second cross section 32 is positioned at the second position P2, and a pin 36 that is inserted into the pin hole 30b or the pin hole 30c. A stanchion 10 configured in this manner can easily hold the second cross section 32 at the first position P1 by inserting a pin 36 into the pin hole 30b, and can easily hold the second cross section 32 at the second position P2 by inserting a pin 36 into the pin hole 30c.

[0071] (5) In the stanchion 10 of the above embodiment, the movable part 40 includes a movable plate 41 having an opposing surface 44 that can face the abutment part 25, a screw shaft 42 that supports the movable plate 41 so that it can be displaced in the second direction D2, and a nut 43 into which the screw shaft 42 is screwed. In the stanchion 10 having such a configuration, the movable portion 40 can be easily configured, and therefore the configuration of the stanchion 10 can be simplified.

[0072] (6) In the stanchion 10 of the above embodiment, the second arm portion 22 is configured to be displaceable along the cross portion 30 in the second direction D2. The stanchion 10 configured in this manner can easily adjust the distance between the first arm portion 21 and the second arm portion 22 depending on the thickness of the parapet Bp. Therefore, the stanchion 10 of this embodiment can be installed on parapets Bp of various sizes and shapes.

[0073] (7) In the stanchion 10 of the above embodiment, the second arm portion 22 has a pin hole 24 penetrating in the third direction D3, and the cross portion 30 has a plurality of pin holes 34 penetrating in the third direction D3, and has a pin 26 inserted into the pin holes 24 and the pin holes 34. In the stanchion 10 configured as described above, the distance between the first arm portion 21 and the second arm portion 22 can be easily maintained by inserting the pin 26 into the pin hole 24 and the pin hole 34 .

[0074] (8) In the stanchion 10 of the above embodiment, the contact portion 25 is made of an elastic member. The stanchion 10 having such a configuration can prevent damage to the exterior wall surface Bw of the building B due to contact between the abutment portion 25 and the exterior wall surface Bw.

[0075] (9) In the stanchion 10 of the above embodiment, the first arm portion 21 is formed with the first clamp fixing hole 23 for fixing the single pipe clamp 51 to the first arm portion 21 . With the stanchion 10 configured as described above, by installing a single pipe clamp 51 in the first clamp fixing hole 23, the single pipe 50 can be easily installed along the outer periphery of the building B. Then, by using the single pipe 50 installed in the stanchion 10, handrails (single pipe 50) and / or protective net 60 can be easily installed along the outer periphery of the building B.

[0076] (10) In the stanchion 10 of the above embodiment, the horizontal portion 30 is formed with the second clamp fixing hole 35 for fixing the single pipe clamp 51 to the horizontal portion 30 . The stanchion 10 configured in this way can easily install the single pipe 50 along the inner surface Bp2 of the parapet Bp by installing the single pipe clamp 51 in the second clamp fixing hole 35. Then, by using the single pipe 50 installed in the stanchion 10, the cross section 30 can be easily supported from the floor surface RF on the roof of the building B.

[0077] Although the embodiments have been described above, it will be understood that various changes in form and details can be made without departing from the spirit and scope of the claims. [Explanation of symbols]

[0078] 10 Stanchions 11 First member 12 Second member 13 Third member 21 First arm 22 Second arm section 23 First clamp fixing hole 24 pin hole (third pin hole) 25 Contact part 26-pin 30 Horizontal section 30b Pin hole (first pin hole) 30c pin hole (second pin hole) 31 1st horizontal section 32 2nd horizontal frame 33 Shaft member 34 Pin hole (4th pin hole) 35 Second clamp fixing hole 36-pin 40 Moving parts 41 Movable plate 42 Screw shaft 43 Nut 50A Single Pipe (Handrail) 60 Protective Net D1 1st direction D2 2nd direction D3 Third direction P1 1st position P2 2nd position Building B Bp Parapet Bw External wall surface

Claims

1. A stanchion for installing a handrail and / or a protective net on a vertical parapet, a first arm portion and a second arm portion extending in a first direction and spaced apart from each other in a second direction perpendicular to the first direction; a cross-bridge portion extending in the second direction and connecting the first arm portion and the second arm portion; a contact portion provided on the first arm portion; a movable portion provided in the second arm portion so as to be displaceable in the second direction, The abutment portion and the movable portion are disposed opposite to each other in the second direction, and are configured so that the abutment portion and the movable portion can clamp the parapet, The bridging portion is the first arm portion is connected to the second arm portion; a second arm portion is connected to the first arm portion; and a shaft member is configured to connect the first arm portion and the second arm portion so as to be rotatable relative to each other; The stanchion, wherein the shaft member extends in a third direction perpendicular to the first direction and the second direction.

2. a first member constituting the first arm portion and the first horizontal portion; a second member constituting the second arm portion; The stanchion according to claim 1 , further comprising: a third member constituting the second lateral portion.

3. The second bridging portion is a first position parallel to the second direction; The stanchion according to claim 1 or 2, wherein the stanchion is configured to be rotatable about an axis of the shaft member between a first position and a second position inclined with respect to the second direction.

4. The bridging portion is a first pin hole that penetrates the first lateral portion and the second lateral portion in the third direction when the second lateral portion is disposed at the first position; a second pin hole that penetrates the first lateral portion and the second lateral portion in the third direction when the second lateral portion is disposed at the second position; The stanchion according to claim 3 , further comprising: a first pin inserted through the first pin hole or the second pin hole.

5. The movable part is a movable plate having an opposing surface capable of opposing the contact portion; a screw shaft that supports the movable plate so that the movable plate can be displaced in the second direction; The stanchion according to claim 1 or 2, further comprising: a nut provided on the second arm portion and threadedly engaged with the screw shaft.

6. The second arm portion is The stanchion according to claim 1 or 2, which is configured to be displaceable in the second direction along the lateral portion.

7. the second arm portion includes a third pin hole that penetrates in the third direction, the horizontal portion includes a plurality of fourth pin holes penetrating in the third direction, The stanchion according to claim 6, further comprising: a second pin inserted through the third pin hole and the fourth pin hole.

8. 3. The stanchion according to claim 1, wherein the abutment portion includes an elastic member.

9. 3. The stanchion according to claim 1, wherein the first arm portion is formed with a first clamp fixing hole for fixing a single pipe clamp to the first arm portion.

10. 3. The stanchion according to claim 1, wherein the horizontal portion is formed with a second clamp fixing hole for fixing a single pipe clamp to the horizontal portion.

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