JP2021092107A - Sheet retaining device - Google Patents

Abstract

To provide a sheet retaining device for securely retaining a sheet at a scaffold with less work.SOLUTION: Provided is a sheet retaining device 1 for retaining a sheet having an eyelet at a column of a scaffold having a binding part, comprising a retaining member 40 and a retainer 10. The retaining member 40 includes a latch part for latching the eyelet and a coming-off prevention part for preventing thereof from coming off after disposed at the retainer 10. The retainer 10 includes a plurality of cutouts and holes for retaining the retaining member 40, a stopper 30 moving for latching the coming-off prevention part, and a wedge part 50 for anchoring the binding part.SELECTED DRAWING: Figure 1

Description

The present invention relates to a seat holding device that holds a seat attached to a scaffold.

Protective sheets are attached to temporary scaffolding used at construction sites and the like. Generally, as a method of fixing the seat to the scaffold, a method of passing a string through the eyelets provided on the seat and tying it to the support of the scaffold is adopted. However, it takes a lot of effort to tie a large number of sheets with a string. Furthermore, the occurrence of slack in the sheet due to loosening of the string may become a problem. Then, if the string is tied tightly in order to prevent the string from loosening, there is a problem that the labor required for removing the sheet increases.

Therefore, as a means of reducing the labor for fixing the seat to the scaffold, for example, Patent Document 1 discloses an invention in which a hook for hooking an eyelet of the seat is arranged by using a binding portion provided on a support of the scaffold. There is.

Japanese Unexamined Patent Publication No. 2000-204767

However, simply hooking the eyelets of the sheet on the hook is not sufficient to fix the sheet. Therefore, when a strong wind acts on the seat placed on the scaffolding, the seat may vibrate or the eyelets of the seat may come off from the hook.

Therefore, in view of the above circumstances, an object of the present invention is to provide a sheet holding device that reliably holds a sheet on a scaffold with little effort.

In order to achieve the above object, the seat holding device according to the present invention is a seat holding device for holding a sheet having eyelets on a support of a scaffold having a binding portion, and the seat holding device is a holding member and a holding tool. The holding member has a locking portion for locking the eyelet and a retaining portion for preventing the eyelet from falling off after being placed on the holding tool, and the holding tool has a plurality of holding members for holding the holding member. It has a notch and a hole, a stopper that moves and locks to the retaining portion, and a wedge portion that is fixed to the binding portion.

According to the present invention, a holding member in which the eyelets of the sheet are locked in the notches and holes of the holder fixed to the binding portion of the scaffolding column is arranged to prevent the stopper from moving and falling off. Therefore, the seat can be reliably held on the scaffolding with little effort.

(A) and (B) are perspective views of the sheet holding device according to the embodiment of the present invention from different viewpoints. A perspective view showing a disassembled state of the sheet holding device according to the embodiment of the present invention from the same viewpoint as in FIG. 1 (A). A perspective view showing a disassembled state of the sheet holding device according to the embodiment of the present invention from the same viewpoint as in FIG. 1 (B). A perspective view showing a part of the assembled state of the seat holding device according to the embodiment of the present invention. A perspective view showing a part of the assembled state of the seat holding device according to the embodiment of the present invention. A perspective view showing a part of the assembled state of the seat holding device according to the embodiment of the present invention. A perspective view showing a state in which a part of the seat holding device according to the embodiment of the present invention is assembled on a support column. (A) and (B) are perspective views showing a state of holding a sheet in the sheet holding device according to the embodiment of the present invention, which are different viewpoints.

Hereinafter, the sheet holding device according to the embodiment of the present invention will be described with reference to the drawings.

As shown in FIGS. 1A and 1B, the sheet holding device 1 according to the present embodiment has a holding tool 10 and a holding member 40 incorporated in the holding tool. The holder 10 has a stopper 30, a pin 60, and a wedge portion 50.

As shown in FIGS. 2 and 3, the main body of the holder 10 has a welded structure of sheet metal, and the bottom surface portion 11, the side surface portion 12, and the front surface portion 13 are connected as face portions orthogonal to each other. A convex portion is formed near the center of the upper side of the side surface portion 12, and an elongated hole 15 is formed in the vertical direction from the convex portion to the vicinity of the bottom surface portion 11. The front surface portion 13 is formed with notches 17A, 17B and 17C at the side end portions. Holes 18A, 18B and 18C are formed at the same height as each notch and at a position closer to the side surface portion 12. The heights of the notches 17A, 17B and 17C and the holes 18A, 18B and 18C are larger than the thickness of the holding member 40 described later.

The inner wall portion 14 is formed so as to be connected to the bottom surface portion 11 and the front surface portion 13 in parallel with the front surface portion 13. Notches 16A, 16B and 16C having the same shape are formed on the inner wall portion 14 at positions corresponding to the notches 17A, 17B and 17C formed on the front surface portion 13.

As shown in FIGS. 2 and 3, the stopper 30 has a sheet metal bending structure, and has a first wall 31, a second wall 32, a third wall 33, a fourth wall 35, and a retaining portion 34. Is formed by bending at a right angle. The first wall 31, the third wall 33 and the retaining portion 34 are parallel to the side surface portion 12, and the second wall 32 and the fourth wall 35 are parallel to the front surface portion 13. A hole is provided in the lower part of the first wall 31, and a pin 60 is arranged through the hole and the elongated hole 15. The outer diameter of the shaft portion of the pin 60 (not shown) is smaller than the width of the elongated hole 15 and the hole diameter provided in the first wall 31. Both ends of the pin 60 are larger than the outer diameter of the shaft, the width of the slotted hole 15, and the hole diameter provided in the first wall.

As shown in FIGS. 2 and 3, the holding member 40 is a plate material formed in a substantially C shape. One end of the holding member 40 is an insertion portion 47 having a tapered shape. An extension portion 46, a convex portion 45, and an extension portion 44 are formed orthogonal to the root portion of the insertion portion 47. The widths of the extension portion 46 and the extension portion 44 are the same as the root portion of the insertion portion 47. The convex portion 45 projects inward of the holding member 40, and the amount of protrusion thereof is substantially the same as the thickness of the eyelet, which will be described later. The extension portion 43 is formed orthogonal to the extension portion 44. The width of the extension portion 43 is the same as the width of the extension portion 44. The extension portion 42 is formed orthogonal to the end portion of the extension portion 43. Further, a retaining portion 41 is formed orthogonal to the end portion of the extension portion 42. The retaining portion 41 is wider than the other portions, and the corners are chamfered.

A wedge portion 50 is formed on the lower surface of the bottom surface portion 11. The wedge portion 50 has a U-shape when viewed from the bottom, and has a slope portion 51 at the end of each U-shape so as to be fitted inside the binding portion 111 of the support column 110, which will be described later.

Here, it will be described that the notch and the hole are composed of three steps. The eyelets placed on the sheet are generally placed at the edges of the sheet at a pitch of 450 mm. However, eyelets near the corners of the seat cannot secure a pitch of 450 mm due to the dimensions of the seat itself. This is because, for example, when eyelets are arranged at a pitch of 450 mm on a sheet having a length of 5400 mm, the eyelets at both ends must be arranged on the edges of the sheet, which cannot be adopted. Therefore, the eyelets arranged at both ends are arranged slightly inside the edge of the sheet. On the other hand, the binding part of the scaffolding column is configured to maintain a pitch of 450 mm. Therefore, when holding the eyelets placed in the middle of the sheet, the middle notch 16B, notch 17B and hole 18B corresponding to a pitch of 450 mm are used. When holding the eyelet placed at the upper end of the sheet, the distance between the eyelet and the eyelet below it is smaller than 450 mm, so the lower notch 16A, notch 17A and hole 18A are used. To do. Further, when holding the eyelets arranged at the lower end of the sheet, since the distance between the eyelets and the eyelets above the eyelets is smaller than 450 mm, the notches 16C, 17C and the holes 18C, which are the upper stages, are used.

Next, a method of holding the sheet by the sheet holding device 1 will be described.
First, as shown in FIG. 4, the eyelet 103 of the sheet 101 and the eyelet 104 of the sheet 102 are passed through the holding member 40 from the insertion portion 47. The eyelet 103 is arranged inside the extension portion 43 as a locking portion, and the eyelet 104 is arranged inside the insertion portion 47 as a locking portion. The eyelets 103 and 104 are described as not being eyelets at the upper end or the lower end of the sheet.

Next, while holding the sheets 101 and 102 on the holding member 40, the holding member 40 is arranged on the holder 10 as shown in FIG. The extension portion 43 is inserted into the notches 16B and 17B from the side, and the insertion portion 47 is inserted into the hole 18B.

Next, the stopper 30 is lowered as shown in FIG. 6 in a state where the insertion portion 47 is pushed into the hole 18B and the extension portion 43 is pushed into the notches 16B and 17B. The stopper 30 descends straight according to the elongated hole 15.
The retaining portion 34 enters the gap between the inside of the retaining portion 41 and the side surface of the inner wall portion 14, and the fourth wall 35 abuts on the inside of the front surface portion 13. Gravity keeps the stopper 30 in the lowered position. The stopper 30 prevents the holding member 40 from coming off the holder 10.

Here, a method of arranging the holder 10 of the sheet holding device 1 on the support column 110 will be described. The strut 110 has a binding portion 111, as shown in FIG. Here, in general, four binding portions are arranged at substantially the same height of the columns at 90 ° divisions. Those that cannot be arranged at the same height due to the dimensions of the binding portion are arranged alternately in different steps. Such bindings are arranged at multiple heights at predetermined height intervals, eg, at a pitch of 450 millimeters. In the present embodiment, since only one of the four binding portions 111 of the same substantially the same height of the support column 110 is used, the other binding portions are omitted in the drawings. The binding portion 111 is formed by welding a substantially U-shaped sheet metal to the support column 110. The size of the upper opening of the binding portion 111 is a tapered shape larger than that of the lower opening.

In order to arrange the holder 10 on the support column 110, the wedge portion 50 of the holder 10 is inserted into the binding portion 111 from above. If necessary, a force may be applied from the upper part of the holder 10 by using a hammer or the like. The holder 10 is securely fixed to the support column 110 due to the wedge effect of the tapered shape of the binding portion 111 and the slope portion 51 of the wedge portion 50.

In this way, the holding member 40 in which the eyelets 103 and 104 are hooked on the holding member 40 is arranged on the holding tool 10 which is fixed to the binding portion 111 of the support column 110 and the stopper 30 is lifted, and the stopper 30 is simply lowered. As shown in FIGS. 8A and 8B, the sheets 101 and 102 can be securely fixed to the columns.
The convex portion 45 of the holding member 40 presses the end portions of the eyelet 103 and the sheet 101 and the end portions of the eyelet 104 and the sheet 101 to the front surface portion 13.

Next, a method of removing the seat from the scaffolding will be described.
In order to remove the sheets 101 and 102 held by the seat holding device 1 as shown in FIGS. 8A and 8B, first, the stopper 30 of the holding tool 10 shown in FIG. 6 is pulled up. Then, the retaining portion 41 of the holding member 40 can be moved in the lateral direction.
The holding member 40 is removed from the holder 10 as shown in FIG. 4 by pulling out the extension portion 43 laterally from the notches 16B and 17B while pulling out the insertion portion 47 of the holding member 40 from the hole 18B.
Finally, the eyelets 103 and 104 are pulled out from the insertion portion 47 of the holding member 40, so that the sheet is removed from the sheet holding device 1. The seat is removed from all the seat holding devices 1 on which the seat is stopped, and the seat is removed from the scaffolding. Then, the process is completed by removing the holder 10 from the binding portion 111.

The present invention allows for various embodiments and modifications without departing from the broad spirit and scope of the present invention. Moreover, the above-described embodiment is for explaining the present invention, and does not limit the scope of the present invention. That is, the scope of the present invention is indicated not by the embodiment but by the claims. And various modifications made within the scope of the claims and within the equivalent meaning of the invention are considered to be within the scope of the present invention.

1 Seat holding device 10 Holder 11 Bottom surface 12 Side surface 13 Front surface 14 Inner wall 15 Long hole 16A, 16B, 16C Notch 17A, 17B, 17C Notch 18A, 18B, 18C Hole 30 Stopper 31 First wall 32 Second wall 33 Third wall 34 Retaining part 35 Fourth wall 40 Holding member 41 Retaining part 42, 43, 44, 46 Extension 50 Wedge 51 Slope 60 Pin 101, 102 Sheet 103, 104 Eyelet 110 prop 111 binding part

Claims (1)

A sheet holding device that holds a sheet with eyelets on a scaffolding column having a binding portion.
The sheet holding device has a holding member and a holding tool, and has a holding member and a holding tool.
The holding member has a locking portion for locking the eyelet and a retaining portion for preventing the eyelet from falling off after being placed on the holder.
The holder includes a plurality of notches and holes for holding the holding member, a stopper that moves to lock the retaining portion, and a wedge portion that is fixed to the binding portion.
A sheet holding device characterized by having.

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