JPS601133Y2 - hook bolt - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a hook bolt that is inserted into a roofing material from the outdoor side and is used to lock and support supported members such as roof fences.

To install the hook bolt B, as shown in Figures 1 and 2, an insertion hole is drilled in the roofing material A from the outdoor side, the hook bolt B is inserted into this insertion hole from the hook member 1 side, and then the hook is inserted. The member 1 is spread out from the mounting rod 2 in a hook shape, the hook member 1 is made to support a supported member C such as a field bridge, and then the base end 3 of the mounting rod 2 is fixed to the roofing material A. hook bolt B was installed.

By the way, when inserting the hook bolt B into the insertion hole of the roofing material A, the hook member 1 is folded in a straight line with the mounting rod 2 and inserted, but as shown in FIGS. When an exterior material that serves as a heat insulating material or a sound absorbing material is attached to the inner surface of A, the hook member 1 is hooked in contact with the exterior material, and the hook member 1 is attached to the base end of the Sakai rod 2. There was a problem that it slid in three directions.

To solve this problem, it is conceivable to make the insertion hole drilled in the roofing material A larger in diameter, but if the diameter is made too large, the watertightness deteriorates.

This invention was developed in view of the above-mentioned circumstances, and aims to provide a hook bolt that is easy to handle and has high reliability in terms of strength.

As shown in Figures 3 to 6, the hook bolt B of this invention
It consists of a mounting rod 2 and a hook member 1 which is loosely fitted into the mounting rod 2 and has a substantially U-shaped cross section and can be expanded into a hook shape from the tip of the mounting rod 2.

The mounting rod 2 is made of a long round bar having a spherical bulge 4 at its tip and a male thread 5 at its other end, the proximal end 3.

On the other hand, the hook member 1 has an upper portion of a substantially U-shaped cross section protruding at the end of attachment to the mounting rod 2, and joins the surfaces against each other from both sides to form a protrusion 6, and the spherical bulge 4 is A wrapping portion 7 is formed to wrap around the spherical bulging portion 4 and prevent it from sliding in the direction of the base end portion 3 of the mounting rod.

Note that the hook member 1 is manufactured by processing an iron plate or the like.

When using this hook bolt B, insert it into the insertion hole of the roof material A in a folded state as shown in Fig. 4 or Fig. 5, that is, with the hook member 1 aligned along the mounting rod 2 and in a straight line. .

At this time, since the inner surface of the holding portion 7 of the hook member 1 is pressed downward by the spherical bulge portion 4 of the mounting rod 2, the hook member 1 does not slide even if it comes into contact with the exterior material.

Then, by applying a slight vibration after insertion, the hook member 1 expands into a hook shape from the tip of the mounting rod 2, and the hook member 1 is locked to the supported member C.

At this time, between the hook member 1 and the mounting rod 2, the protruding part 6 of the hook member 1, the enclosing part 7, and the lower edge 8 of the hook member
Power is transmitted at three locations.

This invention has the above configuration and has the following advantageous features.

■ A spherical bulge is formed at the tip of the mounting rod, and the hook member's holder is attached so as to wrap around this spherical bulge, so the hook member can be opened and closed freely and the hook bolt can be inserted easily. There is no possibility that the hook member gets caught on the exterior material or the like and slides upward.

■ The hook member has a structure that supports the tensile force that acts on the mounting rod during use at three locations: the protruding part, the enclosing part, and the lower edge, so it has excellent support ability and is highly reliable.

Note that the protruding portions of the hook member are butted against each other,
Since force is applied in the vertical direction due to the thickness of the two plates, it has greater strength than conventional ones.

■ The hook part of conventional hook bolts requires machining of pipes, but this design allows for machining of steel plates, resulting in lower prices.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention. Figures 1 and 2 are schematic vertical cross-sectional views showing the state in use, Figure 3 is a side view when the hook bolt is in use, and Figure 4 is a view of the device in its folded state. 5 is a rear view of FIG. 4, and FIG. 6 is a perspective view in use. A: Roofing material, B: Hookholt,
C... Supported member, D... Exterior material, 1
...Hook member, 2...Mounting rod, 3.
...Proximal end, 4...Spherical bulge, 5...
...Male thread, 6...Protrusion, 7...
・Holding part, 8...Lower edge of the hook member.

Claims (1)

[Scope of utility model registration request] A mounting rod having a male thread at the base end and a spherical bulge at the tip, and a roughly U-shaped cross section that fits loosely into the mounting rod and can be expanded into a hook shape from the tip of the mounting rod. a hook member, at the end of which the hook member is attached to the mounting rod, a protruding part is formed by protruding the upper part of the substantially U-shaped cross section and joining the surfaces by butting each other, and the spherical bulge part 1. A hook bolt characterized by forming a wrapping portion that wraps around the spherical bulge portion and restrains movement of the spherical bulge toward the base end of the mounting rod.