JP3146384B2 - Steel plate fixture - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to, for example, building construction work,
BACKGROUND OF THE INVENTION The present invention relates to a steel plate fitting used to attach a steel plate for a fence to a support frame formed of a steel pipe material when constructing a temporary fence for partitioning a construction site in civil engineering work or the like.

[0002]

2. Description of the Related Art Conventionally, when a temporary enclosure fence is constructed by using steel sheets at a construction work site, as shown in FIG. 7, a plurality of temporary enclosure steel sheets S are mounted on a horizontal steel pipe P of a support frame. It is constructed by overlapping the edges and continuously fixing in the lateral direction. In this case, the steel sheet S is attached to the steel pipe material P by hooking a hook portion of a hook bolt B having a male screw M formed at the shaft end on the outer periphery of the steel pipe material P as shown in the figure, and connecting the male screw M to the hole H of the steel sheet S. After tightening the nut N after passing through
Are fixed to the horizontal steel pipe material P of the support frame.

[0003]

In the above-mentioned conventional method of mounting a steel plate for a temporary fence, the surface of the steel plate S (hereinafter, the side facing the support frame steel pipe material P is referred to as the "surface" of the steel plate S. )
Side, the hook bolt B is engaged with the steel pipe material P, the male screw M of the hook bolt B is inserted into the hole H of the steel plate S, and the steel plate S
After the nut N is initially screwed in with the fingertip on the back side of, it must be tightened with a spanner or the like. For this reason, it is necessary to operate the steel plate S from both front and back sides. In addition, when working gloves are usually worn in consideration of safety, there is a disadvantage that it is extremely difficult to screw and tighten a nut. Since the tips of the hook bolts and the nuts are exposed on the back surface of the steel plate S, there is a danger that the clothes of a passing third party may be caught on the shape of the vehicle.

SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, the present invention constructs a temporary fence for construction work that can be easily mounted on only one side of a steel sheet, and that has a good and secure appearance. The purpose is to provide a steel plate fixture that can do things.

[0005]

SUMMARY OF THE INVENTION A hook portion bent into a substantially semicircular shape so as to engage with a steel pipe, and a direction which is continuous with one end of the hook and is substantially perpendicular to the axis of the steel pipe. The main body is formed by a shaft portion extending from the shaft portion, and at the tip of the shaft portion, a hook-shaped piece having a drum-shaped shape whose width is gradually reduced from the diameter of the shaft portion up and down is provided at the shaft center of the shaft portion. A spring member is fitted at a position protruding in two opposite directions perpendicular to the line, and at a position facing the engaging piece of the shaft portion, to form a steel plate fixture, separately from this steel plate fixture. In the steel plate for the temporary enclosure wall attached by the steel plate fitting, the retaining piece of the steel plate fitting is inserted, and in accordance with the shape of the retaining piece, the upper and lower widths on both sides from the central portion. An elongated hole in the shape of a horizontal drum that gradually decreases is drilled, and the retaining piece is inserted into this elongated hole and projected to the back of the steel plate. Then, by rotating the steel plate attachment about 90 ° about the axis of the shaft portion, the engaging piece engages with the elongated hole edge of the back surface of the steel plate, and the spring member Since the steel plate surface is pressed, the steel plate attachment is fixed to the steel plate, and at the same time, the hook portion is positioned to engage with the outer periphery of the steel pipe material.

As the spring member, a disc spring or a push nut is used. This spring member prevents movement in the hook direction by means such as providing a flange-like pedestal or an annular groove on the shaft portion of the steel plate attachment, or fitting an E-ring.

[0008]

When constructing a temporary fence by attaching a steel plate to a support frame using the steel plate fixture configured as described above, the diameter of this shaft is measured from the steel plate surface to the tip of the steel plate fixture. A hook-shaped latching piece having a gradually reduced width in the vertical direction is inserted into an elongated hole having a shape that allows it to be inserted, corresponding to the shape of the latching piece of the steel plate, and is dug into a spring member. The hook piece engages with the long hole edge of the back surface of the steel plate by rotating the steel plate attachment about 90 ° around the axis of the shaft portion after projecting to the back side of the steel plate. The steel plate is fixed to the steel plate by sandwiching the steel plate with the spring member that presses the steel plate, and the steel plate is fixed to the support frame at the same time as the hook portion is positioned to engage with the steel pipe material of the support frame. Therefore, no work is required on the back side of the steel sheet, and no operation such as screwing and tightening the nut is required, and the work of mounting the steel sheet can be performed extremely simply and accurately only on the front side of the steel sheet.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be described in more detail with reference to the embodiments shown in the drawings. FIG. 1 is a side view of an embodiment of the steel plate attachment according to the present invention, and FIG. 2 is a front view of FIG. 1 excluding the steel plate S. The steel plate fixture 1 is formed of a round steel bar,
A hook portion 2 bent into a substantially semicircular shape;
, A flange-shaped pedestal 6 integral with the shaft 3, and fitted to the shaft 3 so that the pedestal 6 prevents movement in the direction of the hook 2. A disc spring 5 and an integral hook 4 are formed at the tip of the shaft 3. The hook portion 2 engages with the steel pipe P1 of the support frame indicated by a chain line in the figure when the steel plate attachment 1 is attached to the steel plate S. It extends in a direction (horizontal) substantially perpendicular to the axis of P1.

As shown in FIGS. 1 and 2, a drum-shaped hooking piece 4 having a width gradually reduced from the diameter of the shaft 3 up and down is integrally formed at the tip of the shaft 3. I have. This hanging piece 4
Are winged so that their centers are the same as the axis of the shaft portion 3 and project in two opposite directions perpendicular to the axis of the shaft portion 3. The pedestal 6 is integrally stamped from the shaft 3 by a well-known working method such as cold forging (swaging), but may be another member fixed by welding or the like.

As shown in FIGS. 3 and 6, the hook piece 2 of the steel plate fitting is inserted through the steel plate S attached by the steel plate fitting (at this time, the hook 2 of the steel plate fitting is horizontally moved). Corresponding to the shape of the latching piece 4, a horizontally long drum-shaped elongated hole 7 whose upper and lower widths gradually decrease from both sides from the center portion is formed in the horizontal direction. . The engaging piece 4 of the attachment is inserted into the elongated hole 7 so as to protrude from the rear surface of the steel plate S, and the steel attachment is rotated by about 90 ° about the axis of the shaft portion 3 (hook). The latching piece 4 engages with the edge of the rear surface of the elongated elongated hole 7, the disc spring 5 presses the surface of the steel plate S, and the steel plate S 4 and the disc spring 5. The steel plate S is attached to the support frame by engaging the hook 2 with the steel pipe material P1 in this state.

FIG. 4 is a plan view showing a state in which a steel plate is mounted on a support frame using the steel plate fixture of the present invention, FIG. 5 is a side view thereof, and FIG. 6 is a rear view of the steel plate. As shown in FIGS. 4 and 5, the support frame is constructed by assembling a horizontal steel pipe P1 with a steel pipe P2 of a column standing upright on the ground.
The fittings are inserted into and engaged with the plurality of elongated holes horizontally arranged in the steel plate S as described above, and the hooks 2 of the upper and lower rows of the fittings on which the steel plate S is mounted are respectively engaged. The steel plate S is securely fixed to the support frame by engaging with the corresponding plurality of upper and lower steel pipe materials P1. This installation work
All the operations are performed on the front side of the steel sheet S having the support frame, and the operation on the back side is not required. Further, since only the hook pieces 4 are exposed on the back side of the steel sheet S, the appearance is good and there is no danger of catching clothes or the like of passers-by.

[0013]

As is apparent from the above description, the steel plate mounting device of the present invention has a drum-shaped shape in which the width of the mounting device body having a semicircular hook portion is gradually reduced from the diameter of the shaft portion up and down. And the hook piece of the steel plate fixture is separately inserted from the steel plate fixture, the steel plate for the temporary enclosure wall attached by the steel plate fixture, which is pierced in the steel plate, , Corresponding to the shape of the hooking piece, drilling a horizontally elongated drum-shaped elongated hole whose upper and lower widths gradually decrease on both sides from the center,
The locking piece is inserted into the hole and rotated by about 90 ° to securely fix it to the steel plate, and the steel plate can be attached to the steel pipe of the support frame. Despite being a fixture for structure and operation, it does not require work on the back side of the steel sheet, does not require any troublesome operations such as screwing and tightening nuts, and does not interfere with wearing work gloves. Only by itself, it is possible to carry out the construction work of the temporary fence for construction work extremely easily, easily and accurately.

FIG. 4 shows a steel plate S using the steel plate fixture of the present invention.
Is a plan view showing a state in which is attached to the support frame, FIG. 5 is a side view thereof, and FIG. 6 is a rear view of the steel sheet S of FIG. The support frame is
It is constructed by assembling a steel pipe P1 horizontally to a plurality of steel pipes P2 standing vertically on the ground. As described above, the steel plate mounting fixture is inserted into and engaged with the plurality of elongated holes 7 arranged at required positions of the steel plate S and attached to the steel plate S,
The steel plate S is securely fixed to the support frame by engaging the hook portions 2 of the plurality of upper and lower rows of steel plate fittings with the corresponding plurality of upper and lower steel pipe members P1.

Further, even after the construction of the temporary enclosure fence, the projecting portion of the steel plate fixture 1 on the back surface of the steel plate S also has only the hook pieces 4 whose width is gradually reduced to both sides from the very small central portion, so that the appearance is good. , No danger of getting caught in passerby clothes,

[0016]

[Brief description of the drawings]

FIG. 1 is a side view of one embodiment of a steel plate attachment of the present invention.

FIG. 2 is a rear view of FIG. 1 excluding a steel sheet S;

FIG. 3 is a partial front view of a steel plate using the steel plate fixture of FIG. 1;

FIG. 4 is a plan view showing a state in which a support frame of a steel plate is mounted by the steel plate mounting device of the present invention.

FIG. 5 is a side view of the state of FIG.

FIG. 6 is a rear view of the steel plate in the state of FIG. 4;

FIG. 7 is an exploded perspective view showing a use state of a conventional steel plate attachment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Steel plate attachment P steel pipe material 2 Hook part S Steel plate 3 Shaft part B Hook bolt 4 Hook piece 5 H hole 5 Disc spring (spring member) M Male screw 6 Pedestal N Nut 7 Long hole F Flange

Claims (1)

(57) [Claims] 1. A hook portion bent into a substantially semicircular shape so as to engage with a steel pipe material, and a shaft portion continuing to one end of the hook portion and extending in a direction substantially perpendicular to an axis of the steel pipe material. At the tip of the shaft portion, a hook-shaped hook piece having a width gradually reduced from the diameter of the shaft portion up and down is formed at the tip of the shaft portion with respect to the axis of the shaft portion. A spring member is fitted at a position protruding in two directions perpendicular to each other and opposite to the engaging piece of the shaft portion to form a steel plate fitting, and separately from the steel plate fitting, To the steel plate for the temporary enclosure fence attached by, the hook piece of the steel plate fixture is inserted,
In addition, corresponding to the shape of the hooking piece, a horizontally-long drum-shaped elongated hole whose upper and lower widths gradually decrease on both sides from the center portion is formed, and the hooking piece is inserted into the elongated hole. Then, by projecting it to the back side of the steel sheet, by rotating the steel sheet attachment about 90 ° about the axis of the shaft part, the engaging piece engages with the long hole edge of the back side of the steel sheet. At the same time, since the spring member presses the steel plate surface, the steel plate fixture is fixed to the steel plate, and at the same time, the hook portion is configured to be in a position to be engaged with the outer periphery of the steel pipe material. Steel plate fittings.