JP2000080749A - Suspending device for ceiling suspension bolt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide suspending devices for ceiling suspension bolts which are suited to the mass production of many kinds of bolts appropriate for the kinds of devices and have a high reliability capable of obtaining strengths required for supporting the ceiling suspension bolts. SOLUTION: A main body 1 of a suspension device equipped with internal thread 3 for screwing a suspension bolt B is formed to a barrel shape with a hard resin. And a head 5 projected out at least to the side of both the ends is provided at the upper end portion of the barrel, a plate-shaped or pipe-shaped iron-based metal is used as a raw material for the female thread 3, a collar portion 7 embedded in the head 5 is provided on the upper end portion by press forming, and the main body 1 of the suspending device is made in one united body by the insert formation of the internal thread 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspending device for a ceiling suspension bolt for attaching a suspension suspension bolt to a deck for supporting a suspended ceiling, a smokeproof partition, and the like.

[0002]

2. Description of the Related Art In a concrete structure such as a steel frame, a deck made of a steel plate is stretched, concrete is poured on the deck to construct a floor, and a suspension bolt is lowered below, thereby lowering a ceiling or the like. I support. A hanging tool is used to attach the hanging bolt.

FIG. 6 shows an example of a conventional hanging tool for a ceiling hanging bolt in use. According to the drawing, the hanging tool Q is a female screw tool body 28 having a flanged head 30 at the upper end. And a coil spring 32 and a washer-shaped movable collar 34 inserted therein, and a sleeve 36 fixedly fitted to the lower end portion.
By providing the notch, the lower holding piece 3 inclined outward so as to hit the edge of the insertion hole 17 of the deck D from below.
8, 38, 38 were formed.

[0004]

According to the above-mentioned conventional hanging tool for ceiling hanging bolts, the tool body 28 is entirely made of a die-cast zinc product. It is not suitable for mass production of various types, is easily corroded by condensation, and is not only expensive to manufacture, but also heavy and inconvenient to handle. I was worried that I would lose the necessary strength.

The present invention has been made in view of the above-described circumstances,
The purpose of the present invention is to provide a highly reliable hanging device for ceiling suspension bolts that is suitable for mass production of various types according to types, is lightweight and easy to handle, and has sufficient strength to support the suspension bolts. did.

[0006]

In order to achieve the above object, the present invention provides a tool body having a female screw into which a suspension bolt is screwed, which is formed of a hard resin into a cylindrical shape, and at least one of which is provided at an upper end thereof. Providing protruding heads at both ends,
A ceiling suspension characterized in that an iron-based metal plate or tube is used as a female screw, a flange is embedded in the head at the upper end by press molding, and the female screw is integrated into the tool body by insert molding. A lifting device for bolts was constructed.

[0007] According to the above construction, since the tool body is made of a hard resin, it is not only lightweight, but also has an expanding head. Therefore, the connection strength sufficient to support the suspension bolt is maintained.

In the above case, a hanging tool for a ceiling hanging bolt which is inserted from above into an insertion hole formed in a deck, and a hard resin hanging cylinder is integrally fitted to a body of the tool body. At the upper part of the hooking cylinder, a plurality of lower holding pieces that fall out of the insertion holes by elastic deformation and hang on the lower surface of the deck and upper holding pieces that press against the upper surface of the deck are formed in a uniform distribution. Since the suspension bolt is screwed into the upper end of the tool body, the mounting strength of the suspension bolt is further increased.

A hanging tool for a ceiling suspension bolt which is attached to the deck by providing a dovetail groove for hanging the head of the tool body, wherein a hard resin tubular cap is integrally fitted to the body of the tool body. If the holding wings that hold down the lower surface of the deck are protruded at both ends on one side of the upper end of the cap, and the engagement wings for stopping rotation that hang on the dovetail grooves are protruded at both ends on the other side, a hard resin head with large friction Since the portion hangs on the inner surface of the dovetail groove, the attachment to the deck is stabilized.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, if the tool main body 1 has a head 5, it does not matter in particular how it is attached to the deck D. For example, it can be a conventional one shown in FIG. Is also good. However, claim 2 and claim 3
In the mounting mode described in (1), the mounting work of the suspension bolt B becomes easy. In addition, the component main body 1 may be provided with an attachment structure to the deck D by integral molding.

Although the female screw 3 is made of an iron-based metal in terms of cost and strength, it is coated with a hard resin, so that it does not rust and has excellent corrosion resistance. In addition, since the outer surface is made of a hard resin, dew condensation is prevented. Further, it is desirable to classify the size of the screw and the material according to the color of the hard resin, so that product management becomes easy.

For forming the female screw 3, a female screw 3 having a desired size and shape such as a diameter and a length can be easily obtained by pressing a ferrous metal plate or a tube.

[0013]

As described above, according to the hanging tool for a ceiling hanging bolt of the present invention, since the female screw is made from an iron-based plate or tube, the screw size and shape become arbitrary. , Suitable for mass production and can be provided at low cost.
In addition, since dew condensation is prevented and corrosion resistance is excellent, strength reliability for supporting the suspension bolt is obtained.In addition, it is lightweight and easy to handle in transportation, storage and installation work. There are excellent effects such as easy classification of material classification.

When a hanging cylinder or a cap is provided as an attachment form to the deck (claims 2 and 3),
The reliability of the mounting of the suspension bolt is reasonably improved.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with respect to two examples of a hanging tool Pa for hanging a hole in the deck D and a hanging tool Pb for hooking with a dovetail groove. It is not limited as long as it is of the form.

FIGS. 1 to 3 show a case in which a hole is hung and a hanging tool Pa for a ceiling hanging bolt is a hanging bolt B.
The main body 1 and the hooking cylinder 2 are integrally formed of hard resin, respectively, by assembling them with two parts, a tool main body 1 into which the screw is screwed and a hooking cylinder 2 hanging on the deck D (FIG. 1). Among them, the female screw 3 made of stainless steel is integrated with the tool body 1 by insert molding.

The tool main body 1 has a flange 5 at the upper end of a cylindrical body 4 and a head 5 to be embedded and connected to the floor concrete C on the deck D. The female screw 3 is embedded in an upper end portion of the inner diameter in which the suspension bolt B is inserted. On the outer peripheral surface of the lower end portion, an annular groove 6 for stopping the latching cylinder 2 is provided.
Are formed.

The female screw 3 has a cylindrical shape having an outer diameter larger than the inner diameter of the body 4, and has a flange 7 embedded in the head 5 at the upper end.
Is formed by pressing a stainless steel plate. Tool body 1 that is integrated by insert molding
The production cost is about 3 to 4 yen, which is considerably lower than the conventional zinc die-cast product of the same form at about 10 yen.

The hanging cylinder 2 is made of a hard polyethylene which is easily elastically deformed, and has a tubular shape fitted to the lower end of the body 4 of the tool body 1 in a sleeve length. And three lower holding pieces 13, 13, 13 hanging below the deck D, which are divided into six by sequentially providing cutouts around the periphery,
Three upper holding pieces 15, 15, 15 hanging on each other are formed alternately (FIG. 3).

Since the lower holding pieces 13 are formed to be inclined outwardly, the insertion holes 17 are formed from above the deck D.
To the body 4 of the tool body 1 due to elastic deformation.
Once, and then restored after passing through the insertion hole 17, the edge of the insertion hole 17 is received from below at the same time as the insertion is completed.

The upper holding piece 15 rises along the body 4 of the component body 1 and is provided with a reversing claw that is inclined and bent outward at the upper end of the rise. When the insertion claw is inserted into the insertion hole 17 of the deck D, When the upper holding piece 15 is elastically deformed (curved outward as shown in FIG. 2), the upper holding piece 15 is deformed.
Is lifted up against the elasticity, so that the lower pressing piece 13 passes through the insertion hole 17 as described above. Then, in the passing state, the upper pressing piece 15 elastically presses the deck D, so that the lower pressing piece 13 strongly sandwiches the edge of the deck D.

In this mounting state, since the upper end of the tool main body 1 protrudes above the deck D, concrete C is driven into the deck D (FIG. 2), and the concrete C is hardened, so that the ceiling suspension bolt is provided. Hanging tool Pa is fixed. Note that, for the hooking cylinder 2, an annular ridge 20 that fits in the annular groove 6 of the body 4 for coupling with the component body 1.
Are formed on the inner surface.

FIGS. 4 and 5 show an example of dovetail hooking. In each of the hanging tools Pb, a tool body 1 formed of a hard resin and a cap 10 integrally fitted thereto are integrated. The female screw 3 made of stainless steel is integrated with the tool body 1 by insert molding.

The tool body 1 also has an inside diameter into which the suspension bolt B can be inserted, and is provided with a hooking head 5 at the upper end.
The head 5 extends to both ends only in one direction. For this reason,
It is inserted into the dovetail groove 21 of the deck D along the extending direction (FIG. 4 shows its posture), and is rotated by 90 degrees and locked (FIG. 5). The female screw 3 has a flange 7 at the upper end embedded in the head 5.
Having.

The cap 10 has a short cylindrical shape into which the suspension bolts B can be inserted. At the upper end, holding wings 23, 23 for pressing against the lower surface of the deck D protrude at both ends on one side, and both ends on the other side. The engagement wings 25, 25 which enter the dovetail groove 21 are protruded. Then, align the presser wings 23, 23 with the projecting direction of the head 5, and
The component body 1 and the cap 10 are assembled.

When attaching to the deck D, the engaging wing 2
When the wings 25, 25 are rotated while being pressed against the lower surface of the deck D, the engaging wings 25, 25 are fitted into the dovetail groove 21,
At the same time, the presser wings 23 elastically press the lower surface of the deck D, and the head 5 is locked in the dovetail groove 21 so as not to rotate.

As for the assembling of the component body 1 and the cap 10, the cap 10 is provided with a reversing inner wall to form a double structure, and a hooking claw 29 is provided at the end of the reversing inner wall. A pair of projections 31 and 3 which are hung on the hook 29 at the lower end.
1 is provided.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a hanging tool for a ceiling hanging bolt according to the present invention in a procedure of using the hanging tool.

FIG. 2 is a sectional view showing a use state of the hanging device.

FIG. 3 is an enlarged plan view of the hanging device.

FIG. 4 is a perspective view showing a procedure of using a hanging tool for a ceiling hanging bolt as another embodiment.

FIG. 5 is a sectional view showing a use state of the hanging device.

FIG. 6 is an explanatory diagram of a conventional example.

[Explanation of symbols]

 B Hanging Bolts D Deck Pa, Pb Hanging Tools for Ceiling Hanging Bolts 1 Tool Body 2 Hanging Cylinder 3 Female Screw 4 Body 5 Head 7 Flange 10 Cap 13 Lower Holder 15 Upper Holder 17 Insertion Hole 21 Dovetail 23 Holder Wings 25 Engagement wings

Claims (3)

[Claims] 1. A tool body having a female screw into which a suspension bolt is screwed is formed of a hard resin into a cylindrical shape, and a head projecting from at least one end at both ends is provided at an upper end thereof, and an iron-based metal plate material is provided in the female screw. Or using a tube material as a material, providing a flange buried in the head at the upper end by press molding,
A hanging tool for ceiling hanging bolts, wherein the female screw is integrated into the tool body by insert molding. 2. A hanging tool for a ceiling hanging bolt which is inserted from above into an insertion hole formed in a deck, and wherein a hanging cylinder made of hard resin is integrally fitted to a body of the tool body, A plurality of lower holding pieces, which are inserted through the insertion hole by elastic deformation and hang on the lower surface of the deck, and a plurality of upper holding pieces that are pressed against the upper surface of the deck are formed at an upper portion of the hooking cylinder in an evenly distributed manner. Item 4. A hanging tool for a ceiling hanging bolt according to item 1. 3. A hanging tool for a ceiling hanging bolt attached to a deck by providing a dovetail groove for hanging the head of the tool body, wherein a hard resin cylindrical cap is integrally fitted to the body of the tool body. 2. The ceiling suspension according to claim 1, wherein holding wings for holding the lower surface of the deck are provided at both ends of the upper end of the cap, and engagement wings for stopping rotation which are engaged with the dovetail groove are provided at both ends of the other side. Suspension for bolts.