JP2590979Y2 - Mounting structure for floor panel lifting hooks to floor panel - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for attaching a floor panel lifting hook to a floor panel which is suitable for use in lifting a floor panel used in a panel assembly type building.

[0002]

2. Description of the Related Art In a prefabricated house made of wood panels, various panels such as a wall panel, a floor panel, and a roof panel are lifted up by a simple crane or the like at a building site, and these panels are joined together. It requires work to assemble.

[0003] In addition, this type of panel is generally produced in a factory and transported to a construction site. In that case, it is necessary to lift the panel with a simple crane or the like in the unloading operation.

By the way, when a panel of this kind is lifted, for example, when a floor panel is lifted, conventionally, as shown in FIG. 5, a nail 2 which is driven into a core material 1 forming a side surface of the floor panel P and cuts into it. A lifting hook having a configuration provided with a hook body 3 having a hook is used.

[0005]

However, when the floor panel P is lifted by using the hook 3 having such a configuration, when the nail 2 is driven into the core 1 forming the side surface of the floor panel P, Alternatively, there has been a problem that the core material 1 often has cracks 5 as shown in the drawing when it is lifted thereafter.

On the other hand, in order to solve this problem, for example, it is possible to adopt a method in which a generally used band-shaped slinge or the like is used to wind (float) the floor panel and lift it up. There is a problem that it takes time and effort to wind up, and in particular, it is necessary to insert a ring or the like between floor panels to be stacked.

Therefore, in the present invention, a hook can be slung on the floor panel by a simple operation, and the mounting structure of the floor panel lifting hook to the floor panel without damaging the floor panel at the time of lifting. It is intended to provide.

[0008]

According to the first aspect of the present invention,
A mounting structure for attaching a floor panel lifting hook to a floor panel, which is engaged with an insertion hole provided in a thickness direction of a core material forming a side surface of the floor panel and lifts the floor panel, The floor panel lifting hook includes a hanging cable connecting portion and a hook main body, and the hook main body is formed as a whole substantially in an L-shape by a rod-shaped body portion and a hook portion bent and extended from the body portion. The body portion is formed to be longer than the height from the insertion hole of the floor panel to the surface of the floor panel, and the hook portion is formed to have a length of at least twice the thickness of the core material of the floor panel, Further, a male screw is formed at the tip of the hook portion, the male screw is inserted into the insertion hole of the floor panel, and a nut is screwed into the male screw from inside the floor panel. And

[0009]

According to the first aspect of the present invention, the whole body is formed substantially in an L-shape including a hanging cable connecting portion and a hook body, and the body portion extends from the insertion hole of the floor panel to the surface of the floor panel. Is formed longer than the height of the floor panel, the hook portion is formed to a length of twice or more the thickness of the core material of the floor panel,
Further, since a male screw of a floor panel lifting hook having a male screw formed at the tip of the hook part is inserted into an insertion hole of the floor panel, and a nut is screwed into the nut from the inside of the floor panel, Simply hooking the hook portion through the insertion hole of the floor panel and screwing a nut to the male screw enables slinging.

[0010] In addition, since the nut is screwed into the male screw inserted into the insertion hole of the floor panel from the inside of the floor panel, when the floor panel is lifted,
The threaded portion of the male screw bites into the inner surface of the insertion hole and is locked and acts as a stopper, and the nut screwed into the male screw portion also acts as a stopper.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the embodiments shown in FIGS.

A floor panel lifting hook used in this embodiment is, as shown in FIGS. 1 to 3, a core material forming side surfaces of the floor panels P to be bolted to each other. In this embodiment, a hanging rod connecting portion formed by bending one end of a single rod-shaped member made of steel material into a ring shape is used for lifting by being engaged with a bolt insertion hole 2 provided in 1. 10 and a hook body 11 formed by bending the remaining portion into an L-shape.

The hook main body 11 is formed by a rod-shaped body 12 forming an L-shaped vertical line, and a hook portion 13 bent from the body 12 and extended to form an L-shaped horizontal line. I have. The bent shape of the L-shaped hook body 11 depends on the thickness of the floor panel P and the positional relationship between the bolt insertion holes 2, but the angle R formed by the rod-shaped body 12 and the hook 13 is approximately 60. In the range of ~ 85 degrees, 8 in the embodiment.
It is set to about 5 degrees. Therefore, the hanging cable connecting part 10 is shaped to be located near the center of the length of the hook part 13.

The body 12 is formed to be longer than the height from the bolt insertion hole 2 of the floor panel P to the surface of the floor panel P. The hook portion 13 is formed to have a length that is at least twice the thickness D of the core 1 of the floor panel P.

The hook for lifting the floor panel used in this embodiment has a configuration in which a male screw 13b is provided at the tip of the hook portion 13.

With this configuration, when the floor panel P is lifted, the thread portion forming the male screw 13b bites into the inner surface of the bolt insertion hole 2 and the hook portion 13 is formed.
Acts as a retainer.

Further, as shown in the figure, the nut 13c is screwed into the male screw 13b inserted into the bolt insertion hole 2 of the floor panel P from the inside of the floor panel, so that the nut 13c also serves as a reliable stopper. Has functions.

The method of use and operation of the floor panel lifting hook used in the mounting structure of the floor panel lifting hook configured as described above to the floor panel will be described below.

FIGS. 2 and 3 show examples of a conventional joint structure in which floor panels P are joined together by bolts and nuts using bolt insertion holes 2 provided in the floor panel P. Is a core material 1 forming the side surface of the floor panel P,
1 are joined together by bolts 14 and nuts 15, and furthermore, a screw nail 16 is
Are driven and joined. Therefore, the floor panel lifting hook of the present invention utilizes the bolt insertion hole 2 which is provided at a predetermined position in a factory or the like for joining the floor panel P.

FIG. 4 shows a state in which the floor panel P is lifted by using the floor panel lifting hook in the mounting structure of the floor panel lifting hook to the floor panel according to the present invention. The work can be performed by an extremely simple work of simply inserting the hook portion 13 of the hook body 11 into the bolt insertion hole 2.

When the floor panel P is lifted as shown in FIG. 4, a force is applied to the hook body 11 in the pulling direction of the hanging cable 17, so that the hook body 11 is inclined. As a result, the lower edge of the hanging cable joint 10 abuts on the corner Pk at the upper end of the floor panel P as shown by the phantom line in FIG. Will be lifted in a safe condition. When removing the hook from the floor panel P, this can be done by simply removing the nut from the male screw and pulling it out.

[0022]

As described above, according to the structure for attaching the floor panel lifting hooks to the floor panel according to the present invention, the following excellent effects can be obtained.

In the invention according to the first aspect of the present invention, the entire structure is formed substantially in an L-shape with the hanging cable connecting portion and the hook body, and the body portion extends from the insertion hole of the floor panel to the surface of the floor panel. The hook portion is formed to be longer than the height of the floor panel, the hook portion is formed to have a length of at least twice the thickness of the core material of the floor panel, and a male thread is formed at the tip of the hook portion. Is inserted through the insertion hole of the floor panel to be lifted, and the nut is screwed from the inside of the floor panel. Therefore, the hook portion is simply inserted into the insertion hole of the floor panel, It is possible to sling simply by screwing the nut into the nut.

[0024] Further, since a male screw is formed in the hook portion and a nut is screwed into the male screw inserted into the insertion hole of the floor panel from the inside of the floor panel, the floor panel is lifted. In this case, in addition to the effect that the thread portion of this male screw bites into the inner surface of the insertion hole and is locked, and in addition to the effect that the male screw exerts as a stopper, the nut is screwed into this male screw portion, so that this The nut exerts a more reliable retaining effect, which can enhance safety when lifting the floor panel.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a perspective view of a floor panel to which the present invention can be applied.

FIG. 3 is a cross-sectional view of a joint structure of a floor panel to which the present invention can be applied.

FIG. 4 is a perspective view showing a state in which the floor panel is lifted by hooks in the embodiment of the present invention;

FIG. 5 is a perspective view showing a conventional example.

[Explanation of symbols]

 P Floor panel 1 Core material 2 Insertion hole 10 Hanging cable connecting part 11 Hook body 12 Body part 13 Hook part 13b Male screw 13c Nut

Claims (1)

(57) [Scope of request for utility model registration] 1. A structure for attaching a floor panel lifting hook to a floor panel, which is engaged with an insertion hole provided in a thickness direction of a core material forming a side surface of the floor panel to lift the floor panel. The hook for lifting a floor panel includes a hanging cable connecting portion and a hook main body, and the hook main body is substantially L-shaped as a whole by a rod-shaped body and a hook that bends and extends from the body. And the trunk is formed to be longer than the height from the insertion hole of the floor panel to the surface of the floor panel, and the hook is longer than twice the thickness of the core of the floor panel. And a male screw is formed at the tip of the hook portion. The male screw is inserted into the insertion hole of the floor panel, and a nut is screwed into the male screw from the inside of the floor panel. That Mounting structure of the floor panel of the hook for lifting the floor panels characterized.