JP2020020164A - Scaffold baseboard - Google Patents

Abstract

To provide a baseboard that can be attached to a plurality of kinds of columns having different diameters.SOLUTION: Each of a first column engaging part provided on one end of a flat plate-like baseboard body 10 and a second column engaging part 12 provided on the other end comprises: a hook 21; a cylindrical part 22 that has a shaft center parallel to a hook central axis; a rotary arm 23 that rotates about the shaft center of the cylindrical part; and a stopper 25 for regulating rotation of the rotary arm. Also, the inner peripheral surface of the hook exhibits a roughly V shape. The rotary arm includes a base 23c, and arms 23a, 23b that bend and extend from the base. The base is longer than the cylindrica part, and is loosely fitted to the cylindrical part so as to vertically move. The stopper is projected at a position where interference occurs when the rotary arm in a downwardly moved state rotates in a direction away from the hook central axis, and includes a tapered part 25t that is inclined away from the hook central axis as approaching toward the upper side.SELECTED DRAWING: Figure 4

Description

  TECHNICAL FIELD The present invention relates to a skirting board to be erected along the edge of a tread on a scaffold.

  BACKGROUND ART Scaffolds that are temporarily installed in buildings such as houses and buildings, and construction sites of civil engineering structures such as bridges and tunnels are generally spanned between a support installed from an installation surface and an adjacent support, or It is mainly composed of a horizontal member supported in a cantilever manner on a single column, and a tread spanned between two parallel horizontal members at the same height.

  In addition, the scaffolding is designed to prevent work tools and architectural members from falling off the tread and to work with a sense of security without fear of the worker's feet coming off the tread. A skirting board may be erected along the margin. A general skirting board includes a flat skirting board main body and hooks attached to both ends of the skirting board main body. By locking each hook to the column, the posture in which the skirting board main body forms a right angle with the tread plate can be maintained.

  In the conventional skirting board, the shape of the hook is an arc, and the diameter of the arc is set according to the diameter of the support. However, columns having different diameters may be used depending on the scaffold. Therefore, there is a problem that a plurality of types of skirting boards are required in accordance with the types of columns having different diameters.

  In view of the above circumstances, it is an object of the present invention to provide a skirting board having a hook to be hooked to a pillar, and to provide a skirting board that can be attached to a plurality of types of pillars having different diameters. .

In order to solve the above-described problems, a scaffold for scaffolding according to the present invention (hereinafter, may be simply referred to as “baseboard”) is
`` A flat board-shaped skirting board main body, a first pillar locking section provided at one end in the longitudinal direction of the skirting board main body, and a second pillar locking section provided at the other end. A skirting board for erecting the skirting board body between adjacent supports,
The first column locking portion and the second column locking portion each include a hook hooked on a column, a cylindrical portion having an axis parallel to a hook central axis extending vertically through the center of the hook, and a cylindrical portion. A pivot arm that pivots about the axis of the pivot arm, and a stopper that regulates the rotation of the pivot arm.
The hook has a substantially V-shaped inner peripheral surface,
The rotation arm includes a base inserted into the cylindrical portion and prevented from coming off, and an arm that bends and extends from the base and separates and approaches the hook center axis as the base rotates. The base is longer than the cylinder, and moves up and down by the base being loosely fitted to the cylinder,
The stopper protrudes at a position where the stopper interferes with the arm portion that is to be rotated in a direction away from the hook center axis while the rotation arm is moved downward, and the hook center is increased upward. It has a tapered portion that is inclined away from the axis. "

  The term “up / down” as used herein refers to a state in which a skirting board is used, that is, an up / down state in a state in which the skirting board body is erected between adjacent columns.

  When attaching the skirting board of this structure to the adjacent support | pillar, a support | pillar is relatively inserted in the opening of the hook in each of the 1st support | pillar locking part and the 2nd support | pillar locking part. Since the inner peripheral surface of the hook has a substantially V-shape, the outer peripheral surface of the post abuts somewhere on the V-shaped inner peripheral surface even if the diameter of the post differs, and the post can be held in the hook. it can.

  In this state, by rotating the rotating arm about the axis of the base portion and bringing the arm portion into contact with the column, the state in which the column is held by the hook can be maintained. Specifically, since the base portion is loosely fitted in the cylindrical portion, the rotating arm moves downward by its own weight, but when the rotating arm is moved downward, the rotating arm moves away from the hook center axis of the arm portion. Is restricted by the stopper. Since the stopper has a tapered portion that is inclined upward and away from the center axis of the hook, the arm portion is located somewhere in the height direction of the tapered portion according to the diameter of the support. It can be lowered until it abuts, and is held between the support and the stopper in a state of being lowered to the maximum. Therefore, the column is pressed toward the hook by the arm portion sandwiched between the column and the stopper, and the state in which the column is held by the hook is maintained. In other words, even if the diameter of the column is different, the column can be pressed against the hook by the arm portion, and the state in which the hook holds the column can be maintained.

The scaffold for scaffolding according to the present invention, in addition to the above configuration,
`` The hook is open in a direction in which one of the front and back surfaces of the baseboard body faces,
While the first post locking portion is fixed to the baseboard body,
The second pillar locking portion slides in the longitudinal direction of the skirting board main body along a long hole penetrating near the end of the skirting board main body. "

  Conventional skirting boards have a fixed length in the longitudinal direction. However, since the distance between struts on a scaffold is not constant, conventionally, it has been necessary to prepare a plurality of types of baseboards corresponding to the distance between struts used for a general scaffold. On the other hand, in the present configuration, since the second strut locking portion slides in the longitudinal direction of the skirting board main body, a single skirting board can be used on scaffolds having different strut-to-strut distances.

  Specifically, by sliding the second pillar locking portion along the long hole, the second pillar locking portion can be slid in the longitudinal direction of the baseboard main body. For this reason, the distance between the hook center axis of the first column locking portion and the hook center axis of the second column locking portion can be changed by the length of the elongated hole. Further, in this configuration, since the opening direction of the hook is the direction in which one of the front and back surfaces of the baseboard body faces, the hook center axis of the first post locking portion and the hook With the distance between the central axis and the distance between the adjacent columns being adjusted, the columns are relatively inserted into both the hooks of the first column locking portion and the hooks of the second column locking portion. , Can be held.

  As described above, according to the present invention, it is possible to provide a skirting board having a hook to be hooked to a support, which can be attached to a plurality of types of supports having different diameters.

FIG. 1A is a perspective view (including an enlarged view of a second pillar locking portion) of a skirting board according to an embodiment of the present invention as viewed from the rear side, and FIG. 1B is the same skirting board. FIG. 2 is a perspective view (including an enlarged view of a first support member locking portion) as viewed from the rear side. FIG. 2 is a perspective view of the same skirting board as FIGS. 1 (a) and 1 (b). FIG. 3 is a plan view of the same skirting board as FIGS. 1 (a) and 1 (b). FIG. 4A is a plan view of the vicinity of the hook when a large-diameter support is held on the hook, and FIG. 4B is a plan view of the vicinity of the hook when the small-diameter support is held on the hook. FIG. 4C is a rear view of the state of FIG. 4A, and FIG. 4D is a rear view of the state of FIG. 4B. FIG. 5 (a) is a rear view when the distance between the hook center axis of the first column locking portion and the hook center axis of the second column locking portion is the longest, and FIG. It is a rear view when the distance between the center axis of the hook of the one support part and the center axis of the hook of the second support part is minimized.

  Hereinafter, a scaffolding skirting board 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5. Here, “up and down” is, as described above, an up and down in a use state in which the skirting board 1 is erected between adjacent columns. In the use state, the field of view from the tread plate side is referred to as “front”, and the outside and inside in the left-right direction in front view or rear view are referred to as “outside” and “inside”, respectively.

  The skirting board 1 has a skirting board main body 10, a first pillar locking portion 11, and a second pillar locking portion 12 as main components. The skirting board main body 10 is in the shape of an elongated rectangular flat plate, and has a first column locking portion 11 provided at one end in the longitudinal direction and a second column locking portion 12 provided at the other end. Have been. Note that the skirting board 1 of the present embodiment includes a lower surface portion 17 extending perpendicularly to the front side from the lower side of the skirting board main body 10. The lower surface portion 17 is for filling a gap between the tread plate and the baseboard body 10.

  The first column locking portion 11 and the second column locking portion 12 each include a hook 21, a cylindrical portion 22, a rotating arm 23, and a stopper 25 in common. The hook 21, the tubular portion 22, and the stopper 25 are all fixed to a vertically long and thin flat plate-like support portion 20.

  The hook 21 is fixed to the vicinity of the upper end of the support portion 20 so as to be located outside the support portion 20 and open to the back side. The height of the hook 21 is slightly higher than the upper side of the skirting board main body 10, and the front end of the hook 21 is positioned so as not to protrude from the front of the skirting board main body 10. The hook 21 has a V-shaped peripheral surface portion 21v having a substantially V-shape on the inner peripheral surface, and has a constant width from the V-shaped peripheral surface portion 21v to the open end.

  The cylindrical portion 22 is fixed to a substantially central portion of the support portion 20 in the height direction. Therefore, the hook center axis extending vertically through the center of the hook 21 is located outside the axis of the cylindrical portion 22. The rotating arm 23 has a cylindrical base 23c inserted into the cylindrical portion 22, and an arm bent and extended from the base 23c. In the present embodiment, two arms 23a and 23b are provided for each rotating arm 23, and the arms 23a and 23b and the base 23c form a substantially U-shape. The ends of the arms 23a and 23b are curved outward.

  The base 23 c of the rotation arm 23 is longer than the cylinder 22. The base portion 23c inserted into the tube portion 22 is in a loosely fitted state in which there is a gap between the base portion 23c and the inner peripheral surface of the tube portion 22. Therefore, the rotating arm 23 moves up and down with respect to the cylindrical portion 22 and the support portion 20 to which the cylindrical portion 22 is fixed.

  The stopper 25 is fixed to the support part 20 above and inside the cylindrical part 22. More specifically, the stopper 25 protrudes from the support part 20 to the back side, and further bends and extends upward. A tapered portion 25t is formed on the outer side surface of the upper end portion of the stopper 25 such that the tapered portion 25t is inclined inward as going upward. In other words, the tapered portion 25t is inclined so as to be further away from the hook center axis as going upward.

  In the present embodiment, a second stopper 26 is provided in correspondence with the rotation arm 23 having the two arm portions 23a and 23b. The second stopper 26 is fixed to the support part 20 below and inside the cylindrical part 22. Similarly to the stopper 25, the second stopper 26 projects from the support portion 20 to the rear side, and further bends and extends upward. However, unlike the stopper 25, the second stopper 26 does not have the tapered portion 25t. The position of the outer side surface at the upper end of the second stopper 26 is set immediately below the position of the outer side surface at the upper end of the stopper 25, that is, the innermost position on the outer side surface of the stopper 25.

  The difference between the first strut engaging portion 11 and the second strut engaging portion 12 is that the first strut engaging portion 11 is fixed to the baseboard main body 10, whereas the second strut engaging portion 12 is fixed. Reference numeral 12 denotes a point movable with respect to the baseboard body 10. The support portion 20 of the first pillar locking portion 11 is fixed to one end of the baseboard main body 10.

  On the other hand, an elongated hole 15 extending in the longitudinal direction of the skirting board body 10 is provided in the vicinity of the end of the skirting board body 10 on the side where the second pillar locking portion 12 is provided. In the present embodiment, two long holes 15 are provided vertically separated from each other. Two holes 27 penetrate through the support portion 20 of the second column locking portion 12 in a positional relationship corresponding to the long hole 15. In the present embodiment, the positions of the holes 27 and the long holes 15 are such that the positions of the two holes 27 are respectively above and below the range in which the rotating arm 23 can move in the vertical direction. Is set.

  With such a configuration, by moving a bolt shaft (not shown) passing through the hole 27 and the long hole 15 along the long hole 15, the second pillar locking portion 12 is Can be slid. In other words, the distance between the center axis C1 of the hook of the first column 11 and the center axis C2 of the second column 12 can be changed by the length of the slot 15. In addition, by fastening the nut to the bolt shaft portion passing through the hole 27 and the long hole 15, the second column locking portion 12 can be fixed to the baseboard body 10. In addition, instead of providing the hole 27 in the support portion 20 of the second column locking portion 12, a bolt shaft portion may be directly protruded from the support portion 20.

  Next, a method of using the baseboard 1 of this embodiment on a scaffold will be described. The pillars P are cylinders or cylinders, and a large number of them are erected in the vertical direction from the installation surface on the scaffold. A horizontal member such as a handrail or a beam member is bridged between adjacent columns P. In addition, a tread is bridged between two parallel horizontal members at the same height. The horizontal member on which the tread plate is bridged is a horizontal member bridged between adjacent columns P, or a horizontal member supported in a cantilever manner on the column P.

  The skirting board 1 is attached between the adjacent columns P such that the skirting board body 10 is at a right angle to the tread. At that time, the orientation of the baseboard 1 is such that the lower surface portion 17 is continuous with the tread plate. Prior to attaching the skirting board 1 to the pillar P, first, the second pillar locking portion 12 is slid with respect to the skirting board main body 10 to lock the hook center axis C1 of the first pillar locking portion 11 with the second pillar locking portion. The distance between the portion and the hook center axis C2 is adjusted in accordance with the distance between the columns P. In general scaffolds, the distance between adjacent columns is often set to 1800 mm or 1829 mm. In the skirting board 1 of the present embodiment, in order to correspond to the above-mentioned general spacing between the supports, the length of the skirting board main body 10 is set to match the distance between the supports 1800 mm, and the length of the long hole 15 is also adjusted. It is set longer than 29 mm.

  5A by sliding the second column locking portion 12 until the bolt shaft portion passing through the hole portion 27 and the long hole 15 comes into contact with the outermost portion of the inner peripheral surface of the long hole 15. As shown in the figure, the distance between the hook center axis C1 of the first post locking portion 11 and the hook center axis C2 of the second post locking portion 12 can be maximized. Further, by sliding the support portion 20 until the bolt shaft portion passing through the hole portion 27 and the long hole 15 comes into contact with the innermost portion on the inner peripheral surface of the long hole 15, as shown in FIG. In addition, the distance between the hook center axis C1 of the first column locking portion 11 and the hook center axis C2 of the second column locking portion 12 can be minimized.

  Thereafter, with the opening of the hook 21 in each of the first and second support portions 11 and 12 facing the support P, the skirting board 1 is moved closer to the support P, and the support P is inserted into the opening of the hook 21. Is inserted relatively. Since the inner peripheral surface of the hook 21 has a V-shaped peripheral surface portion 21v, as shown in comparison with FIGS. 4A and 4B, even if the diameter of The outer peripheral surface abuts somewhere on the V-shaped peripheral surface portion 21v. Here, FIG. 4B shows an exaggerated case where the diameter of the pillar P is smaller than that of FIG. 4A.

  With the outer peripheral surface of the column P abutting on the inner peripheral surface of the hook 21, the rotating arm 23 is rotated around the axis of the base 23c to bring the arm portions 23a and 23b into contact with the column P. Since the ends of the arms 23a and 23b are curved outward, the arms 23a and 23b abut on the column P so as to surround the column P.

  Since the base portion 23c is loosely fitted to the cylindrical portion 22, the rotating arm 23 moves downward by its own weight. When the rotation arm 23 is moved downward, the rotation of the arm portions 23a and 23b in the direction away from the hook center axes C1 and C2 is restricted by the stopper 25. The stopper 25 is formed with a tapered portion 25t that is inclined so as to move away from the hook center axes C1 and C2 as going upward. Therefore, according to the diameter of the column P, the upper arm portion 23a can be lowered until it comes into contact with the tapered portion 25t somewhere in the height direction. For example, when the diameter of the column P is large, the position where the arm portion 23a contacts the stopper 25 is the upper portion of the tapered portion 25t as shown in FIG. On the other hand, when the diameter of the column P is small, the position at which the arm portion 23a contacts the stopper 25 is lower than the contact position in FIG. 4C, as shown in FIG. 4D.

  Then, the arm 23a is sandwiched between the column P and the stopper 25 in a state of being lowered to the maximum. As a result, the column P is pressed toward the hook 21 by the arm 23 a sandwiched between the column P and the stopper 25. Since the lower arm portion 23b is integral with the upper arm portion 23a, the column P is also pressed toward the hook 21 by the arm portion 23b. As described above, even if the diameter of the column P is different, the column P can be pressed against the hook 21 by the arm portions 23a and 23b, and the state where the column P is held by the hook 21 can be maintained.

  Since the second stopper 26 projects below the cylindrical portion 22, the second stopper 26 restricts the lower arm 23b from rotating away from the hook center axes C1 and C2. Since the two arm portions 23a and 23b are integral, the rotation of the arm portions 23a and 23b can be restricted only by the stopper 25. However, the rotation of the arm portions 23a and 23b is provided by providing the second stopper 26. The load on the stopper 25 when restricting the movement can be reduced. In addition, the lower arm portion 23b has not only the effect of pressing the column P toward the hook 21 but also the effect of keeping the base portion 23c in a state in which the base portion 23c is prevented from coming off from the tube portion 22 (the "tube" of the present invention). Base part which is inserted into the part and is prevented from falling off).

  As described above, since the inner peripheral surface of the hook 21 has the V-shaped peripheral surface portion 21v, even if the diameter of the column P is different, the hook 21 is brought into contact with the inner peripheral surface of the hook 21 and held by the hook 21. be able to. In addition, the stopper 25 that regulates the rotation of the arms 23a and 23b in the opposite direction that presses the column P held by the hook 21 against the hook 21 has a tapered portion 25t at the upper end, so that the column is supported. Even when the diameter of P is different, the state where the support P is held on the hook 21 can be maintained by the arms 23a and 23b.

  Here, in most cases, the pillar P used in a general scaffold has either a diameter (diameter) of 48.6 mm or a diameter of 42.7 mm. Therefore, the angle and length of the V-shaped peripheral surface portion 21v of the hook 21 are set so that the pillars P having at least these diameters can be brought into contact with each other. The angle and length of the taper portion 25t in the stopper 25 and the height position of the stopper 25 are set so that the state in which the hooks 21 hold the pillars P of both diameters can be maintained by the pressing by the arm portions 23a and 23b. Is set.

  As described above, the present invention has been described with reference to the preferred embodiments. However, the present invention is not limited to the above embodiments, and various improvements can be made without departing from the gist of the present invention as described below. And design changes are possible.

  For example, in the above description, the case where the rotating arm 23 includes the two arm portions 23a and 23b is illustrated, but the present invention is not limited to this. If the base portion 23c is prevented from coming off from the cylindrical portion 22, the arm portion may be used. 23a alone. In that case, the second stopper 26 is unnecessary. Further, even in the case where two arms are provided, the second stopper 26 is not indispensable in the case where the two arms are integrated or rotated integrally as described above.

DESCRIPTION OF REFERENCE NUMERALS 1 baseboard 10 baseboard main body 11 first support locking portion 12 second support locking portion 15 long hole 21 hook 21v V-shaped peripheral surface portion 22 cylindrical portion 23 rotating arms 23a and 23b arm portion 23c base 25 stopper 25t taper portion P Support C1 Hook center axis (Hook center axis of first support locking part)
C2 Hook center axis (Hook center axis of second support locking part)

Claims (2)

A flat board-shaped skirting board main body, comprising a first pillar locking section provided at one end in the longitudinal direction of the skirting board main body and a second pillar locking section provided at the other end, A skirting board for erecting the skirting board body between adjacent supports,
The first column locking portion and the second column locking portion each include a hook hooked on a column, a cylindrical portion having an axis parallel to a hook central axis extending vertically through the center of the hook, and a cylindrical portion. A pivot arm that pivots about the axis of the pivot arm, and a stopper that regulates the rotation of the pivot arm.
The hook has a substantially V-shaped inner peripheral surface,
The rotation arm includes a base inserted into the cylindrical portion and prevented from coming off, and an arm that bends and extends from the base and separates and approaches the hook center axis as the base rotates. The base is longer than the cylinder, and moves up and down by the base being loosely fitted to the cylinder,
The stopper protrudes at a position where the stopper interferes with the arm portion that is to be rotated in a direction away from the hook center axis while the rotation arm is moved downward, and the hook center is increased upward. A scaffold for scaffolding, characterized by having a tapered portion inclined away from the axis. The hook is open in a direction in which one of the front and back surfaces of the baseboard body faces,
While the first post locking portion is fixed to the baseboard body,
2. The scaffold according to claim 1, wherein the second strut locking portion slides in a longitudinal direction of the skirting board main body along a long hole penetrating near an end of the skirting board main body. 3. Skirting board.

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