JPH0559781A - Locking metal fixture of hanger bolt to steel deck - Google Patents

Abstract

PURPOSE:To obtain such a locking metal fixture of a hanger bolt having high stability that it is easily installed in a recessed groove having a downward opening formed in the bottom of a steel deck and that it is capable of corresponding surely to variations in width of the recessed groove. CONSTITUTION:A locking metal fixture 1 is so constituted that a pair of bearing metal fixtures 2 and 3 of long and narrow natal plates are overlapped at the central parts 2a and 3a and, at the same time, that they are interlocked with each other in a rotatable manner through a coupling member 4. The coupling member 4 is a female screw body having a through-hole 7 into which a hanger bolt is screwed and is constrained to the bearing metal fixture 2 in a state of non-rotation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hanging bolt locking fitting for suspending and supporting a ceiling plate, piping, wiring and various other equipments on the lower surface of a synthetic floor using a deck plate.

[0002]

2. Description of the Related Art As a locking metal fitting of this type, an actual opening sho 63-
The one described in Japanese Patent No. 5115 is known. The locking metal fitting has a structure in which a nut to which a suspension bolt is screwed is fixed to a central portion of a support metal fitting made of an elongated metal plate, and both sides of the support metal fitting are bent downward, and are formed on a lower surface of a deck plate. The supporting metal fitting is inserted into the downwardly opening concave groove along the longitudinal direction thereof and rotated by 90 degrees so that both end edges of the supporting metal fitting are recessed along the inner surfaces on both sides of the concave groove. It is adapted to be engaged and fixed to the step.

[0003]

Although the above-mentioned conventional metal fittings have a simple structure, they have to be rotated by 90 degrees, which makes mounting work troublesome. Further, since the groove width of the concave groove of the deck plate is large, there is a possibility that both end edges of the supporting metal fitting may engage with the concave stepped portion and fall off without being fixed, which is a point of stability. I had a problem with.

The present invention solves the above-mentioned problems of the prior art, and is a highly stable deck plate that is easy to install and can reliably deal with variations in the groove width of the concave groove of the deck plate. It is an object of the present invention to provide a hanging bolt locking metal fitting for a.

[0005]

In order to achieve the above object, the locking metal fitting according to the present invention is such that a pair of supporting metal fittings made of elongated metal plates are superposed on each other in the central portion and are rotated with each other through a connecting member. The connecting member is movably connected, and the connecting member is a female screw body having a threaded hole through which a suspension bolt is screwed, and is non-rotatably restrained to one of the support fittings.

[0006]

With the above-described structure, the locking metal fitting is formed by extending the pair of support metal fittings in an X-shape centering on the connecting member so as to form the recesses formed along the inner surfaces on both sides of the recessed groove of the deck plate. It is securely engaged and fixed to the stepped portion. And
If the groove width of the concave groove varies, the expansion widths of the two support fittings can be adjusted.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a locking fitting 1 according to the present invention. The locking metal fitting 1 is composed of a pair of support metal fittings 2 and 3 made of elongated metal plates, and a connecting member 4 for superimposing the support metal fittings 2 and 3 in the central portion and rotatably connecting them. ..

As shown in FIG. 2, one of the support fittings 2 is
The central portion 2a is flat and the leg portions 2b, 2 extending on both sides thereof are flat.
While b is inclined downward, both end portions 2c, 2c are bent further downward. The both-end bent portions 2c, 2c are provided so as to prevent a step from being formed between the other support tool 3 described later. Further, the central portion 2a is provided with a hexagonal hole 5 into which the hexagonal body portion of the connecting member 4 described later is fitted and fitted.

Similar to the support metal fitting 2, the other support metal fitting 3 has a flat central portion 3a, and leg portions 3b and 3b extending on both sides thereof are inclined downward as shown in FIG.
A circular hole 6 is provided in a.

As shown in FIG. 4, the connecting member 4 is a female screw body having a threaded hole 7 into which a hanging bolt is screwed,
The outer circumference is a non-circular shape, and in the illustrated example, the body portion 8 is formed in a hexagonal shape.
A collar portion 9 is integrally provided at one end of the, and a cylindrical portion 10 having a smaller diameter than the body portion 8 is continuously provided at the other end. Then, as shown in FIG. 5, while the body portion 8 of the connecting member 4 is fitted into the hexagonal hole 5 of the support fitting 2 to restrain the rotation of the connecting member 10,
By inserting the cylindrical portion 10 into the circular hole 6 of the support fitting 3 and caulking the opening end portion 10a of the support fitting 3 to rotatably connect the support fitting 3 to the connecting member 4, the support fittings 2 and 3 are connected to the central portion 2a. , 3a are superposed and rotatably coupled to each other.

As shown in FIG. 6, the engaging metal fitting 1 constructed as described above is engaged with and held in a downwardly opening concave groove 13 formed in the lower surface of a deck plate 12 constituting a concrete composite floor. To use.

First, the suspension bolt 11 is screwed into the screw hole 7 of the connecting member 4, and both supporting metal fittings 2 and 3 are inserted close to each other and inserted along the longitudinal direction of the groove 13. The support fittings 2 and 3 are expanded in an X shape around the connecting member 4, and both end portions 2c, 2c and 3 of both support fittings 2 and 3 are opened.
The locking metal fittings 1 and 3c are fitted and fixed to the recessed step portions 14 and 14 formed along the inner surfaces of both sides of the recessed groove 13.
Are engaged and held in the groove 13. Then, a ceiling plate or the like is attached using the hanging bolts 11 hanging from the locking fitting 1. In the figure, 15 indicates concrete.

[0014]

As described above, according to the locking metal fitting of the present invention, both support metal fittings 2 and 3 are expanded into an X-shape to form a recess formed along both inner surfaces of the recessed groove of the deck plate. Since it is engaged and held by the stepped portion, the mounting work is easy, and even if the groove width of the concave groove varies, it is possible to surely deal with it by simply adjusting the expansion width of both the support fittings 2 and 3. You can

Moreover, since both end portions of both the support fittings 2 and 3, a total of four places, engage with the recessed stepped portion, the stability is also excellent.

[Brief description of drawings]

FIG. 1 is a perspective view of a locking fitting according to the present invention.

FIG. 2 is a plan view and a front view of one of the support fittings.

FIG. 3 is a plan view and a front view of the other support fitting.

FIG. 4 is an enlarged front view and a bottom view of the connecting member.

FIG. 5 is a vertical cross-sectional front view showing a connecting portion of both support fittings.

FIG. 6 is a vertical cross-sectional front view of a main part showing a usage state of a locking fitting.

[Explanation of symbols]

 1 Locking Metal Fitting 2, 3 Support Metal Fitting 4 Connection Member 5 Hexagonal Hole 6 Circular Hole 7 Screw Hole 8 Body 9 Collar 10 Cylindrical 11 Lifting Bolt

Claims (3)

[Claims] 1. A pair of support fittings made of an elongated metal plate are superposed at a central portion and rotatably connected to each other via a connecting member, and the connecting member has a screw hole into which a hanging bolt is screwed. A locking metal fitting for a hanging bolt to a deck plate, characterized in that it is a female screw body that extends through and is constrained to one of the support metal fittings in a non-rotating state. 2. The female screw body has a structure in which a collar portion is continuously provided at one end of a body portion whose outer periphery is formed in a non-circular shape, and a cylindrical portion is continuously provided at the other end thereof. A non-circular hole with which the body portion is aligned is provided in the central portion of the so as to restrain the rotation of the female screw body, and the cylindrical portion is inserted into the circular hole provided in the central portion of the other supporting metal fitting, and its open end 2. A hook metal fitting for a hanging plate with respect to a deck plate according to claim 1, wherein both of the metal fittings are rotatably coupled by caulking the portions. 3. The metal fitting of a suspension bolt for a deck plate according to claim 1, wherein a central portion of the support fitting is flat and both sides thereof are inclined and bent downward.