JPH0932189A - Ceiling suspension metal tool for deck plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lessen the number of parts of ceiling suspension metal tools fitted to the projection of a deck plate and remove the movable parts to reduce cost and further, securely prevent deformation of the body in the using condition. SOLUTION: This ceiling suspension metal tool is constituted of a main body composed of a bottom plate 3, a central reinforcing plate 6 continuously extended to both sides of the central part, and side wall plates 4, 5 continuously extended to both side ends thereof respectively, and a bending manipulation plate 2 of the body arranged on the bottom plate 3 and provided with hooks 12 fixed to both ends of the bottom plate, at both ends. A pierced screw hole 8 is provided to engage with a suspension bolt 13 at the center of the bottom plate 3 and notched recesses 11 to clip the projection 22 of the deck plate 21 are provided at the inside of respective side wall plates 4, 5. Mutually fitting fixing protrusions 9 and recessions 10 are provided at the inside of respective side wall plates 4, 5 and both sides of the center reinforcing plate 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite slab deck plate integrated with the bottom surface of a concrete slab, the composite slab deck plate having a downwardly projecting ridge. The present invention relates to a ceiling bracket to be attached.

[0002]

2. Description of the Related Art A ceiling hanging bracket mounted on a ridge of a deck plate for a synthetic slab as described above includes a pair of left and right holding pieces which can be opened and closed in a main body having a through screw hole through which a hanging bolt is screwed. Axially supported, a spring for urging these two holding pieces in a direction away from each other is arranged, and a pair of holding pieces are swung in a direction approaching each other by a suspension bolt screwed through the through screw hole, The pair of holding pieces are configured to hold the ridge portion of the deck plate.

[0003] However, such a conventional ceiling hanging bracket for deck plate has a large number of parts and a complicated structure, is not only expensive, but also has movable parts.
There was a drawback that it would not operate smoothly if it was not assembled accurately.

Therefore, as shown in FIG. 6, the present applicant first forms side wall plates 4 and 5 from both left and right sides of each region on both sides in the longitudinal direction of the bottom plate 3, and forms these side wall plates. Part 4,
5 is provided with a cutout recess 11 that forms a downward-spreading space into which the ridge 22 of the deck plate 21 can be fitted,
The main body 1 having a through screw hole 8 in which a suspension bolt 13 penetrates is formed at the center portion of the bottom plate portion 3, overlaps the bottom plate portion 3 between the side wall plate portions 4, 5, and has both ends of the bottom plate portion 3 at both ends. A main body bending operation plate 2 having a hook portion 12 to be engaged with the main body bending operation plate 2. The hanging bolt 13 is screwed into the through screw hole 8 to push up the main body bending operation plate 2 against the bottom plate portion 3 to bend the bottom plate portion 3. Thus, a configuration in which the ridge portion 22 is sandwiched between the side wall plate portions 4 and 5 is proposed.

[0005]

However, in the ceiling hanging bracket for deck plate having the above-described structure, the bottom plate portion 3 is bent at both sides of the central portion so that the ridge portions 22 are sandwiched between the side wall plate portions 4 and 5. As a result, the bent portion is weak in strength, and when a large tensile load is applied, a stable fixed state cannot be maintained due to the deformation of the bent portion, and as shown in FIG. There was a risk of swinging easily.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and its features are indicated by parenthesized reference numerals in the embodiments described later. As shown, the ceiling hanging bracket for a deck plate of the present invention includes a main body (1) and a main body bending operation plate (2), and the main body (1) includes:
A bottom plate (3) and side wall plates formed on both sides of each region from both ends of the center portion to both ends of the bottom plate (3) except for a longitudinal center portion of the bottom plate (3). (4,5) and
And a central reinforcing plate (6) formed on both sides of the central portion in the longitudinal direction of the bottom plate (3).
A vertical through screw hole (8) is provided at the center in the length direction, and a bottom plate is located above the inner side of each side wall plate (4, 5).
(3) is bent at a position between the side wall plates (4, 5) and the central reinforcing plate (6), and when these side wall plates (4, 5) approach each other, the deck plate (21) A notch recess (11) for sandwiching the ridge (22) is provided, and a bottom plate is provided at a lower portion of the inner side of each side wall plate (4, 5) and at both sides of the central reinforcing plate (6). (3) is bent at a position between the side wall plates (4, 5) and the central reinforcing plate (6), and the side wall plates (4, 5) and the central reinforcing plate (6) approach. The main body bending operation plate (2) is disposed so as to overlap with the bottom plate portion (3), and is provided at both ends thereof. It is characterized in that it has hook portions (12) that engage with both ends of the bottom plate portion (3).

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.
A description will be given based on the attached exemplary drawings.

In the embodiment shown in FIGS. 1 to 5, 1 is a main body, 2 is a main body bending operation plate, and 13 is a hanging bolt.
The main body 1 includes a bottom plate portion 3 and side wall plate portions 4 formed on both sides of each region from both ends of the center portion to both ends of the bottom plate portion 3 except for a central portion in the longitudinal direction of the bottom plate portion 3. ,
4, 5, and 5, and central reinforcing plate portions 6, 6 formed on both sides of the central portion in the longitudinal direction of the bottom plate portion 3. A V-shaped notch 7 reaching the vicinity of the bottom plate 3 is formed between the side wall plates 4 and 5 and the central reinforcing plate 6, and when an upward bending moment acts between both ends of the bottom plate 3 The bottom plate 3 is configured to bend at a position where the cut 7 exists. Notch recesses 11 are formed in the upper portions of the inner sides of the side wall plates 4 and 5 facing each other, and the bottom plate 3 is formed with a cut 7 between the side wall plates 4 and 5 and the central reinforcing plate 6.
When the side walls 4 and 5 bend at the position and approach each other, the concrete slab 2
The ridge 22 having a triangular cross section protruding downward from the deck plate 21 integrated with the bottom surface of the O is sandwiched from both sides.

The central reinforcing plate portion 6 is formed in a substantially trapezoidal shape having a height considerably lower than the lower edge of the cutout recess 11 of the side wall plate portions 4 and 5, and has a substantially triangular shape so as to protrude from both upper ends thereof. An engagement projection 9 is provided to project. In addition, at the position facing the engaging projection 9 on the inner side of the side wall plates 4, 5, the engaging projection 9 is provided.
The bottom plate portion 3 is bent at the position of the cut 7 between the side wall plate portions 4 and 5 and the central reinforcing plate portion 6 so that the side wall plate portions 4 and 5 are bent. And central reinforcing plate 6
The engagement projections 9 are configured to be fitted and engaged with the engagement recesses 10 when approaching.

At the center of the bottom plate 3 of the main body 1, there is provided a cylindrical portion 8a which has been burred so as to protrude upward, and has a vertical through-hole screw through which a suspension bolt 13 is screwed and penetrated. A hole 8 is provided. In addition, the cylindrical portion 8a
May be formed to protrude downward.

The main body bending operation plate 2 is disposed so as to overlap the bottom plate portion 3 between the side wall portions 4, 4 and between 5, 5 on both sides of the main body 1. The hook portion 12 is folded back so as to engage with the hook portion 12. In order to reinforce the hook portion 12, reinforcing ribs 12 a are formed on both ends of the main body bending operation plate 2, including the hook portion 12, for increasing the bending rigidity. In the center of the main body bending operation plate 2, a concave portion 2 a into which an upper end of a suspension bolt 13 penetrating the through screw hole 8 is fitted is formed.

The main body bending operation plate 2 is assembled to the main body 1, for example, by preparing the main body bending operation plate 2 before bending one of the hook portions 12 at both ends. After engaging the hook portion 12 with one end of the bottom plate portion 3 of the main body 1, bending the hook portion 12 at the other end to engage with the other end of the bottom plate portion 3, or cutting the bottom plate portion 3 7, the distance between both ends of the bottom plate portion 3 is reduced to reduce the distance between both ends of the bottom plate portion 3. In this state, the main body bending operation plate 2 having the hook portions 12 formed on both ends thereof is placed on the bottom plate portion 3 and then placed on the bottom plate portion 3. By bending back 3 to its original flat shape,
There is a method of engaging the hook portion 12 with both ends of the bottom plate portion 3.

When using the ceiling hanging bracket configured as described above, first, the through screw holes 8 in the bottom plate 3 of the main body 1 are used.
Then, the suspension bolt 13 is screwed to a position where the upper end thereof contacts the lower surface of the main body bending operation plate 2. Then, FIGS. 2 and 5
As shown in, the main body 1 is attached to the upper end of the hanging bolt 13. In this state, the bottom plate portion 3 of the main body 1 extends in a plane shape, and the upper end opening width D of the space formed by the cutout recesses 11 on the inner sides of the side wall plate portions 4 and 5 is the lowermost end width of the ridge portion 22. The width is slightly larger than the large d, or the width is such that the ridge 22 can be fitted into the space formed by the cutout recess 11 by making the main body 1 oblique.

Next, the main body 1 is brought close to the ceiling by holding the suspension bolts 13, and as shown by phantom lines in FIG. Into the space formed by the notch recess 11. From this state, the suspension bolt 13 is rotated in the screwing direction, and the center of the main body bending operation plate 2 is pushed up by the upper end of the suspension bolt 13. Then, as shown in FIG. 1, the hook portions 12 at both ends of the main body bending operation plate 2 are engaged with both ends of the bottom plate portion 3, and the suspension bolts 23 are inserted into the through screw holes 8 in the central portion of the bottom plate portion 3. Since both ends of the bottom plate 3 of the main body 1 are lifted, the cut 7 is formed, and the bottom plate 3 is located at a position between the side wall plates 4 and 5 having a small section modulus and the central reinforcing plate 6. 3 bends. Accordingly, the side wall plates 4, 5
Tilt so that they approach each other, and the protrusions 22 of the deck plate 21 are clamped by the cutout recesses 11 of the side wall plates 4 and 5. Thus, the suspension bolt 13 is fixed in a state of hanging from the ridge portion 22 via the main body 1. The suspension bolts 13 are used for suspending ceiling materials, pipes, and the like.

Further, in a state where the side wall plates 4 and 5 are tilted so as to approach each other and the projections 22 of the deck plate 21 are sandwiched by the cutout recesses 11 of the side wall plates 4 and 5, 5 is close to the central reinforcing plate 6 so that the engaging projection 9
And the engagement recesses 10 are fitted and engaged with each other. Therefore, unless the side wall plates 4 and 5 are tilted in the direction of opening each other, the side wall plates 4 and 5 and the central reinforcing plate 6 are coupled to each other in the vertical direction, and the deformation of the main body 1 is reliably prevented. Therefore, even if the strength of the main body 1 is weakened at the position by the cut 7 formed to bend the bottom plate portion 3 of the main body 1, the deformation of the main body 1 is ensured in a state where the hanging bolts 13 are used in a suspended state. And a stable fixed state can be maintained even when a large tensile load is applied, and there is no possibility that the suspension bolt 13 easily swings right and left.

The ceiling hanging bracket for a deck plate according to the present invention is not limited to the structure of the embodiment shown in the above embodiment, but can be constructed in various modes. For example, in the above embodiment, the burring-processed cylindrical portion 8 is formed at the center of the bottom plate portion 3.
The example in which the through hole 8 is formed in the inner periphery of the plate nut is described. However, a through hole is formed in the bottom plate portion 3, and a plate nut-like member is disposed on the upper surface thereof. May form the through screw hole 8.

In the above embodiment, the deck plate 2
1 shows an example in which the protruding ridge 22 protruding downward has a triangular cross-section, but the present invention can be applied to the protruding ridge 22 having an arbitrary cross-sectional shape, for example, an inverted T-shaped or L-shaped cross-sectional shape. It can also be applied to ridges.

[0018]

EFFECT OF THE INVENTION The ceiling hanging metal fitting for deck plate of the present invention can be carried out as described above, and the hanging bolt is screwed into the through screw hole of the bottom plate portion of the main body to rotate in the screwing direction. The bending operation plate of the main body is pushed up, the bottom plate portion is bent at a position between the side wall plate portion and the central reinforcing plate portion, and the side wall plate portions are tilted so as to come close to each other and protrude toward the lower side of the deck plate. Since the ridges are sandwiched, the main body can be securely and firmly fixed by a simple operation.

Further, since the structure does not have a movable portion pivotally attached to the support shaft, the operation and action at the time of mounting are hardly affected by the manufacturing accuracy, and the side wall plates are tilted so as to approach each other. In a state in which the protrusions of the deck plate are sandwiched by the side wall plate portions, the side wall plate portion and the central reinforcing plate portion approach each other, so that the engagement protrusions and the engagement concave portions are fitted and engaged with each other. Unless tilted in the opening direction, the side wall plate portion and the central reinforcing plate portion are connected to each other in the vertical direction to reliably prevent deformation of the main body, and therefore, the strength is weakened at the bending position to bend the main body. Even when the suspension bolts are used in a suspended state, deformation of the main body can be reliably prevented, a stable fixed state can be maintained even when a large tensile load is applied, and the suspension bolts can easily swing right and left. Les is not, always it is possible to ensure safe use.

In addition, the main body can be machined from one iron plate and the main body bending operation plate can be machined in the same manner. Since it is a structure that can be configured and does not have a movable portion that is pivotally attached to a support shaft, the structure is extremely simple as a whole and can be implemented at very low cost.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional front view showing a use state of a ceiling hanging bracket for a deck plate according to an embodiment of the present invention.

FIG. 2 is a vertical sectional side view showing a state before use of the ceiling hanging bracket of the embodiment.

FIG. 3 is a partial vertical sectional front view showing components of the ceiling hanging bracket of the embodiment in an exploded manner.

FIG. 4 is a plan view showing an assembled state of the ceiling hanging bracket of the embodiment.

FIG. 5 is a partially longitudinal front view showing a relationship between a ceiling hanging bracket and a ridge on the deck plate side before use in the embodiment.

FIG. 6 is a partially longitudinal front view showing a state of use of a conventional ceiling hanging bracket for deck plate.

FIG. 7 is a partially longitudinal front view showing a problem of the conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Body bending operation plate 3 Bottom plate part 4 Side wall plate part 5 Side wall plate part 6 Central reinforcing plate part 8 Through screw hole 9 Engagement protrusion 10 Engagement recessed part 11 Notch notch 12 Hook part 21 Deck plate 22 Protrusion part

Claims (1)

[Claims] 1. A main body (1) and a main body bending operation plate (2). The main body (1) has a bottom plate (3) and a central portion in the longitudinal direction of the bottom plate (3). Side wall plates (4, 5) formed on both sides of each region from both ends of the center part to both ends of the bottom plate part (3), and both sides of the center part in the longitudinal direction of the bottom plate part (3) The bottom plate (3) is provided with a vertical through screw hole (8) at the center in the longitudinal direction of the bottom plate (3). In the upper part of the inner side of (4,5), the bottom plate (3) has the side wall plates (4,5) and the central reinforcing plate.
(6), a notch recess (11) is provided for sandwiching the ridge (22) of the deck plate (21) when the side wall plates (4, 5) approach each other. , And each side wall plate
On the lower side of the inner side of (4,5) and on both sides of the central reinforcing plate (6), a bottom plate (3) is provided on both side wall plates (4,5) and the central reinforcing plate (6).
Between the side wall plates (4,5) and the central reinforcing plate
(6) Engagement projections (9) that engage with each other when approaching
The main body bending operation plate (2) is disposed so as to overlap with the bottom plate portion (3), and has a hook portion that engages with both ends of the bottom plate portion (3) at both ends thereof. (12) A ceiling hanging bracket for a deck plate.