JP2003184305A - Form assembling hook bolt - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a hook bolt capable of preventing a hooking section from being simply slipped off to breakway from the inside of an hooking hole of a form assembling form panel. <P>SOLUTION: In the approximately bar-shaped hook bolt 100 having the hooking section 12 bent in an approximately L-shape on one end and cutting a male screw 14 in the other end, a hollow 18 is cut in the horizontal direction on the inside of the inner end of the hooking section 12. The inside circumferential edge of a hooking hole 22 of the hook bolt opened in a form panel 20 is partially fitted into the hollow cut inside of the inner end of the hooking section 12 of the hook bolt to hook. The hooking section 12 of the hook bolt inserted into the hooking hole 22 in the form panel is prevented from being simply slipped off to breakaway from the inside of the hooking hole 22. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hook bolt for assembling a form used for assembling a form for pouring concrete.

[0002]

2. Description of the Related Art Due to the recent increase in thinking about recycling, the form panel for forming the form can be repeatedly used.
A panel structure formed by bending and joining metal plates is often used. The formwork panel has a generally rectangular shape with a standard size. When assembling a formwork for concrete pouring using this formwork panel, the plurality of formwork panels are arranged in a plane in the vertical or horizontal direction. At that time, as shown in FIGS. 4, 5 and 6, a plurality of formwork panels 20 arranged in a plane for the formwork assembly are provided on the outer surface of the plurality of formwork panels 20. Two or more rod pipes 30 that are bridged over each other are connected so that they do not move. The rod pipe 30 and the formwork panel 20 are shown in FIGS.
As shown in FIG. 5, the hook bolts 10 are used to fix the two so that they do not move. As shown in FIG. 4, the hook bolt 10 has a substantially L-shaped hooking portion 12 at one end and a male screw 14 at the other end, which is substantially rod-shaped. Then, the hooking portion 12 provided at one end of the hook bolt 10 is inserted into the hooking hole 22 formed in the side wall of the form panel 20, and the hooking portion 12 of the hook bolt 10 is hooked. It is hooked inside. Male screw 1
The other end of the hook bolt 10 in which 4 is engraved is inserted into a long hole 42 opened in the surface of the stopper plate 40 that is laid across the outside of the two or more rod pipes 30. Then, a nut 50 is screwed into the other end of the hook bolt 10 in which the male screw 14 protruding to the outside of the elongated hole 42 is engraved, and the nut 5 is inserted.
0 is tightened. Then, a plurality of formwork panels 20 are fixed to the rod pipe 30 via the hook bolts 10 and the stop plates 40 so as not to move.

[0003]

However, when the form panel 20 is fixed to the rod pipe 30 using the hook bolts 10 as described above, the hooking portions 12 of the hook bolts 10 are Due to the external force applied to the frame panel 20, it easily slipped out from the inside of the hook hole 22 of the form panel 20 and separated. Then, the formwork assembled by arranging the plurality of formwork panels 20 may be collapsed. Then, the work of assembling the formwork was sometimes overkill.

The present invention has been made in view of the above problems, and an object of the present invention is to hook a hook bolt for fixing a form panel to a rod pipe in response to an external force applied to the form panel. The purpose of the present invention is to provide a hook bolt for formwork assembly (hereinafter, referred to as a hook bolt) which can prevent the formwork panel from being easily detached from the inside of the hook hole of the formwork panel.

[0005]

For this purpose, the hook bolt according to the present invention has a hook portion bent into an approximately L shape at one end and a male screw engraved at the other end. A hook bolt having a substantially rod shape, which is fitted and hooked in a part of the inner peripheral edge of the hook hole of the hook bolt opened in the formwork panel in the lateral direction inside the inner end of the hook portion. The feature is that the depression is carved.

In this hook bolt, as described above, the hooking portion provided at one end of the hook bolt is inserted into the hooking hole of the frame panel, and the hooking portion of the hook bolt is inserted into the frame. When hooked inside the hooking hole of the panel, part of the inner peripheral edge of the hooking hole of the formwork panel is fitted and locked in the recess carved in the lateral direction inside the inner end of the hooking part of the hook bolt. Can be made. Then, it is possible to prevent the hooking portions of the hook bolts inserted therein from easily coming out and coming off from the inside of the hooking holes of the form panel.

In the hook bolt of the present invention, the hooking portion has a substantially round bar shape, and the both ends of the recess reach the depth of about 1/3 of the diameter of the hooking portion. It is advisable to adopt a structure in which the recess is formed in a crescent shape with a shallow bottom and extends in the lateral direction inside the inner end of the hooking portion.

In this hook bolt, the hook bolt is laterally arranged inside the inner end of the hook portion so that both ends of the recess reach a depth of about 1/3 of the diameter of the hook portion. The inner peripheral edge portion of approximately 1/3 of the locking hole of the formwork panel can be fitted and locked into the inside of the long recessed recess for a long time. Further, it is possible to reliably prevent the hooking portion of the hook bolt inserted into the hooking hole from the inside of the hooking hole of the form frame panel from easily coming off and coming off.

Also, in this hook bolt, since the recess is formed in a shallow crescent shape in the lateral direction inside the inner end of the hooking portion of the hook bolt, the recess is formed. It is possible to prevent the cross-sectional area of the hook bolt inner end of the hook bolt from being significantly reduced as compared with the cross-sectional areas of the other hook bolt portions connected to the hook bolt inner portion. Then, it is possible to prevent the mechanical strength of the inner end of the hooking portion of the hook bolt in which the recess is formed from being weakened. Then, when an external force or the like is applied to the hook bolt, the inner end of the hook portion of the hook bolt is easily broken or bent.
Can be prevented.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a preferred embodiment of the hook bolt of the present invention, and FIG. 1 is a front view showing a usage state thereof. The hook bolt will be described below.

The hook bolt 100 is made of steel and has a hook 12 which is bent into an L-shape at one end.
And has a substantially rod shape with the male screw 14 engraved on the other end.

The above structure is similar to that of the conventional hook bolt 10. However, in the hook bolt 100, the hook bolt of the hook bolt opened in the form panel 20 in the lateral direction inside the inner end of the hook 12 thereof. Fit a part of the inner peripheral edge of the retaining hole 22,
An indentation 18 to be hooked is engraved.

The hook bolt shown in FIG. 1 is constructed as described above, and in this hook bolt, the hook portion 12 provided at one end of the hook bolt 100 is provided with the hook hole 22 of the form panel. Insert it into the hook bolt 1
When the hooking portion 12 of No. 00 is hooked inside the hooking hole 22 of the form panel 20, as shown in FIG. 1, the hook bolt 100 is moved laterally inside the inner end of the hooking portion 12 of the hook bolt 100. A part of the inner peripheral edge of the locking hole 22 of the form panel 20 can be fitted and locked in the carved recess 18. Then, it is possible to prevent the hooking portion 12 of the hook bolt 100 inserted into the hooking hole 22 of the formwork panel 20 from easily coming out and coming off from the inside of the hooking hole 22. And the formwork panel 2
It is possible to prevent the molds assembled by arranging 0s from collapsing.

In the hook bolt of FIG. 1, as shown in FIG. 2, the hooking portion 12 of the hook bolt 100 has a substantially round bar shape, and the hooking portion 12 has a diameter D of approximately 1.
The recess 18 is elongated in a crescent shape in a thin bow shape so that both ends of the recess 18 reach the depth L of / 3, and the hook bolt 100 is elongated laterally inside the inner end of the hook 12 of the hook bolt 100. It is recommended that the structure be engraved.

In that case, the depression 1 is formed to a depth L which is approximately 1/3 of the diameter D of the hook portion 12 of the hook bolt 100.
As shown in FIG. 2, the hook hole of the form panel 20 is provided inside the recess 18 formed in the inner end of the hook 12 of the hook bolt 100 so as to reach both ends of the hook bolt 100. Two
The inner peripheral edge portion of approximately 1/3 of 2 can be fitted and hooked for a long time. The hook hole 22 of the form panel 20
It is possible to reliably prevent the hooking portion 12 of the hook bolt 100 inserted therein from coming out from the inside and easily coming off.

Further, in such a case, since the recess 18 is formed in a shallow crescent shape in the lateral direction inside the inner end of the hook portion 12 of the hook bolt 100, the recess 18 is formed.
It is possible to prevent the cross-sectional area of the inner end of the hooking portion 12 of the hook bolt 100 in which is engraved from being significantly reduced as compared with the cross-sectional area of the other hook bolt 100 portions connected to it. Then, it is possible to prevent the mechanical strength of the inner end of the hooking portion 12 of the hook bolt 100 in which the recess 18 is formed from being weakened. And the hook bolt 10
It is possible to prevent the inner end of the hook portion 12 of the hook bolt 100 from being easily broken or bent when an external force or the like is applied to 0.

For reference, the recess 18 is formed in the hook bolt 1
FIG. 3 shows a case in which a deep half-moon shape is engraved in the lateral direction inside the inner end of the hook portion 12 of No. 00. In this case, when the inner peripheral edge portion of the retaining hole 22 of the formwork panel 20 is fitted inside the recess 18, the formwork panel 20 is provided at both ends of the recess 18.
Since a part of the inner peripheral edge of the retaining hole 22 is hooked, the inner peripheral edge portion of the retaining hole 22 of the formwork panel 20 cannot be deeply and surely fitted and locked inside the recess 18. In addition, the cross-sectional area of the inner end of the hanging portion 12 in which the recess 18 is formed is significantly reduced. And that depression 1
The mechanical strength of the inner end of the hook portion 12 of the hook bolt 100 in which 8 is engraved is weakened. When an external force is applied to the hook bolt 100, the hook bolt 1
The inner end of the hooking portion 12 of 00 is easily broken or bent.

[0018]

As described above, according to the hook bolt of the present invention, the hooking portion provided at one end of the hook bolt is inserted into the hooking hole of the frame panel to hook the hook bolt. When the stopper is hooked inside the hooking hole of the form panel, a part of the inner peripheral edge of the hooking hole of the form panel is inserted into the recess provided inside the inside end of the hooking part of the hook bolt. Can be stopped. Further, it is possible to reliably prevent the hook bolt hooking portion from easily coming out and coming off from the inside of the hooking hole of the form panel. Then, it becomes possible to prevent the formwork assembled by arranging the formwork panels from being easily collapsed when receiving an external force or the like.

[Brief description of drawings]

FIG. 1 is a front view showing a usage state of a hook bolt of the present invention.

FIG. 2 is an enlarged explanatory view showing a state where the inner peripheral edge portion of the hook hole of the formwork panel is fitted and hooked in the recess of the hook bolt of the present invention.

FIG. 3 is an enlarged explanatory view of a state in which the inner peripheral edge portion of the hook hole of the formwork panel is fitted and hooked in the recess of the hook bolt of the present invention.

FIG. 4 is a partial front cross-sectional view of a formwork assembled using hook bolts.

FIG. 5 is a partial side sectional view of a formwork assembled using hook bolts.

FIG. 6 is a partial plan view of a mold frame assembled using hook bolts.

[Explanation of symbols]

10,100 hook bolt 12 Hook bolt hook 14 Male screw 18 hollow 20 Formwork panel 22 Formwork panel hook holes 30 bar pipe

Claims (2)

[Claims] 1. A hook rod having a substantially L-shaped hooking portion at one end and a male screw engraved at the other end, and having a substantially rod shape, wherein an inner end of the hooking portion is inside. A hook bolt for assembling a formwork, characterized in that a recess for enclosing and engaging a part of the inner peripheral edge of the hooking hole of the hook bolt opened in the formwork panel is engraved in the lateral direction of. 2. The hook has a substantially round bar shape, and the recess has a substantially crescent shape so that both ends of the recess reach a depth of about 1/3 of the diameter of the hook. The hook bolt for assembling a mold according to claim 1, wherein the hook bolt is laterally engraved inside the inner end of the hooking portion.