JPH0673832A - Suspending device for ceiling bar - Google Patents

Abstract

PURPOSE:To prevent deformation of a ceiling bed material and deformation of a suspending device due to the downward load applied to a ceiling finishing material so as to heighten the accuracy of a ceiling level. CONSTITUTION:Four supporting pieces 14a-14d are bent from both longitudinal sides of a rectangular top plate 13 where a clamp screw 12 is screwed. A ceiling bed material 5 having a U-shaped section is passed between the supporting pieces of the same side, and a ceiling finishing material 6 is locked by the lower ends of opposite supporting pieces. A clamp screw 12 is disposed in a position for pressing the upper end corner 19 of the ceiling bed material 5, and the lateral width (wa) of the top plate 13 is formed narrow to be close to the diameter of the clamp screw 12. Thus, it is possible to prevent the deformation of an upper flange part 5a of the ceiling bed material 5 and the deformation of the top plate 13 due to the down ward load applied to the ceiling bed material 5, and it is possible to remove a gap between the ceiling bed material 5 and the ceiling finishing material 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension device for a ceiling bar, and more specifically, a ceiling bar for suspending a ceiling bar such as a ceiling finishing material or the like in a lower part of a ceiling / ceiling base material so as to be orthogonal to the ceiling bar. The present invention relates to a suspension device of.

[0002]

2. Description of the Related Art Generally, as a ceiling structure, ceiling base materials are arranged horizontally and in parallel with each other by a hanger at the lower end portions of hanging bolts hanging at appropriate intervals on a ceiling slab, and at the bottom of these ceiling base materials. It is known that ceiling finishing materials are suspended in parallel with each other by a suspension device so as to be orthogonal to these, and a ceiling panel is installed between the ceiling finishing materials. And, as the above-mentioned suspension device, the actual opening 55
Various types have been proposed as disclosed in Japanese Patent Laid-Open No. 48975/1989.

If one example is shown, the suspension device is constructed as shown in FIG. As shown, the lifting device 70
Has a rectangular upper plate 73 into which the tightening screw 12 is screwed, and four supporting pieces 74a to 74d are bent downward from both sides in the longitudinal direction of the upper plate 73. This suspension device 70 includes support pieces 74a, 74b, 74 on the same side.
Between the c and 74d, the supporting pieces 74a are arranged so as to straddle the ceiling base material 5 made of a channel material having a U-shaped cross section.
And locking claws 7 formed at the lower ends of 74c and 74b and 74d
The upper end portion 6a of the ceiling finishing material 6 made of, for example, I-bar is locked by 7, 77, and the screw hole 73 provided in the upper plate 73 is provided.
It is designed to be fixed by a tightening screw 12 screwed into a.

[0004]

However, in such a suspension device 70, since the tightening screw 12 is arranged in the central portion of the upper plate 73 having a relatively large lateral width, the ceiling finishing material 6 is provided. When a downward load is applied, as shown in FIG. 8A, the upper end flange portion 5a of the ceiling base material 5 is
May be deformed downward by the bending moment of the tightening screw 72, or even the upper plate 13 may be deformed as shown in (b) of the figure. As a result, the ceiling base material 5 and the ceiling finish material 6 may be deformed. There is a problem that a gap S is generated between the two and the ceiling level is distorted.

The present invention has been made in view of the above circumstances, and it is possible to prevent the deformation of the ceiling base material and the suspension device due to the downward load applied to the ceiling finishing material, and to maintain the accuracy of the ceiling level. An object of the present invention is to provide a suspension device for a ceiling bar.

[0006]

In order to achieve the above object, the ceiling bar suspension device of the present invention has four support pieces bent downward from both longitudinal sides of a rectangular upper plate having a tightening screw. Assuming a ceiling bar suspension device that straddles a ceiling base material having a U-shaped cross section between the support pieces on the same side and locks the ceiling bar at the lower end of the opposing support piece, the above-mentioned tightening screw is used for the ceiling base material. Place it in a position to push the upper corner of the material,
The width of the upper plate is narrowed so that the width of the upper plate and the tightening screw diameter are close to each other.

In the present invention, on one of the same sides of the support pieces, a projection protruding to the front open portion of the ceiling base material in order to regulate the mounting direction so that the tightening screw is located at the upper corner of the ceiling base material. Are preferably formed.

[0008]

According to the ceiling bar suspension device of the present invention constructed as described above, the downward load is applied to the ceiling bar by arranging the tightening screw at the position where the upper end corner of the ceiling base material is pushed. Even if it is, the bending moment due to the tightening screw can be kept small on the upper flange of the ceiling base material,
It is possible to prevent deformation of the upper flange portion of the ceiling base material. In addition, since the lateral width of the upper plate and the tightening screw diameter are formed so as to be close to each other, the lateral width is narrowed, so that the bending moment of the upper plate can be suppressed to a small value and deformation of the upper plate can be prevented. As described above, since the upper flange portion and the upper plate of the ceiling base material are prevented from being deformed, there is no gap between the ceiling base material and the ceiling bar, and the ceiling level accuracy can be maintained.

In addition, one of the support pieces on the same side is provided with a protrusion projecting to the front open portion of the ceiling base material in order to restrict the mounting direction so that the tightening screw is located at the upper corner of the ceiling base material. As a result, the lifting device can be easily attached to the proper position, and the lifting work of the ceiling finishing material can be facilitated.

[0010]

Embodiments of the present invention will be described in detail below with reference to the drawings. 1 is a perspective view of an example of a system ceiling equipped with a lifting device of the present invention as seen from the back of the ceiling, FIG. 2 is a cross-sectional view of a main part thereof, and FIG. 3 is a perspective view of a usage state of the lifting device of the present invention. FIG. 4 shows an exploded perspective view of a main part of the system ceiling.

In the figure, reference numeral 1 denotes a suspension bolt suspended from a ceiling slab 2 via an anchor 3, and a ceiling made of a channel material having a U-shaped cross section via an L-shaped hanger 4 at a lower end portion of the suspension bolt 1. The base material 5 is supported horizontally and in parallel at appropriate intervals. A ceiling finisher 6 which is a ceiling bar having a J-shaped cross section is suspended by a suspending device 7 of the present invention below the ceiling base material 5 so as to be orthogonal to them.

The ceiling finishing material 6 is arranged at the same interval as the ceiling panel 8, and the lower flange portion 6b of the ceiling finishing material 6 has an inwardly facing flange 9 and an outwardly facing flange formed on the side portions of the ceiling panels 8 and 8 adjacent to each other. The flange 10 is locked. At this time, the intersection portion of the ceiling panel 8 is locked via the joint piece 40 and the shift preventing member 50 that engage with the ceiling finish material 6. As shown in FIG. 4, the ceiling panel 8 is formed by adhering a heat insulating / sound absorbing material 11 such as glass wool to the back surface side of a metal front plate 8b having a large number of small holes 8a.

Between the ceiling finishing materials 6 and 6, an equipment panel 30 is installed, which is similar to the ceiling panel 8 and is provided with lighting equipment 31, air conditioning equipment (not shown), speakers, sprinklers, smoke detectors and other equipment. There is. In this case,
A lighting device 31 is fixed with a mounting member 32 between the ceiling base materials 5 and 5. Further, a brace fitting 60 is attached to an arbitrary position between the ceiling base material 5 and the ceiling finish material 6 (specifically, the center position of each side of the grid portion formed by the ceiling base material 5 and the ceiling finish material 6). As a result, seismic retrofitting is performed along with horizontal position adjustment.

The lifting device 7 has a rectangular upper plate 13 into which a tightening screw 12 is screwed, as shown in FIGS.
There are four support pieces 14a to 14d, two on each side of the upper plate 13 and bent downward. The upper end portions of the support pieces 14a and 14b, 14c and 14d on the same side are connected by a side plate portion 15 for reinforcement.
The ceiling base material 5 is engaged with the opening 16 below the lifting device 7
Is supported across the ceiling base material 5 so that the ceiling base material 5 is sandwiched between the support pieces 14a and 14b and 14c and 14d on the same side. In addition, the opposing support pieces 14
At the lower end of a and 14c, 14b and 14d, a ceiling finishing material 6
A locking claw 17 having a U-shaped cross section is formed so as to lock the upper flange portion 6a so as to hold it.

In this case, the lateral width wa of the upper plate 13 is smaller than the width wb between the engaging claws 17 facing each other, and is formed sufficiently close to the tightening screw 12 (specifically, the screw hole 18). Has been done. Further, the tightening screw 12 (specifically, the screw hole 18) is eccentric from the center of the upper plate 13, and the tightening screw 1
2 is an upper end corner portion 19 (upper end flange portion 5a) of the ceiling base material 5.
It is located at the position where you press the base. Further, one of the support pieces 14a and 14b, 14c and 14d on the same side, specifically, the support pieces 14a and 14 near which the tightening screw 12 is located.
Inside the support pieces 14b and 14d on the side opposite to c, the tightening screw 12 is located at the upper end corner portion 19 of the ceiling base material 5 so that the mounting direction is regulated. A protrusion 20 is formed so as to project to a suitable position for mounting the lifting device 7, that is, the tightening screw 12 is located at the upper end corner portion 19 of the ceiling base material 5.

The suspension device 7 thus constructed is attached so as to straddle the ceiling base material 5 between the support pieces 14a and 14b, 14c and 14d on the same side. In this case, the suspending device 7 must be attached so that the tightening screw 12 is located at the upper end corner portion 19 of the ceiling base material 5, but one of the support pieces 14a and 14b, 14c and 14d on the same side has the ceiling base material. Since the projection 20 protruding from the front open portion 5c of the material 5 is formed, the mounting direction of the suspension device 7 with respect to the ceiling base material 5 is limited, and the tightening screw 12 is surely attached to the upper end corner portion 19 of the ceiling base material 5. The suspending device 7 can be easily attached so as to be positioned, and the attachability is improved.

Then, the opposing support pieces 14a and 14c,
By locking the upper end flange portion 6a of the ceiling finishing material 6 with the locking claws 17 of 14b and 14d and tightening the tightening screw 12, the ceiling finishing material 6 is drawn to the lower end portion 5b side of the ceiling base material 5. It is fixed in a state orthogonal to this. In this case, since the tightening screw 12 is arranged at the position where the upper end corner portion 19 of the ceiling base material 5 is pushed, even if a downward load is applied to the ceiling finish material 6, the upper end flange portion 5a of the ceiling base material 5 does not contact the ceiling finish material 5. The bending moment due to the tightening screw 12 can be suppressed to a small value, and the upper flange portion 5 of the ceiling base material 5 can be suppressed.
The deformation of a is prevented. In addition, since the lateral width wa of the upper plate 13 is formed small near the tightening screw 12, the bending moment can be suppressed to be small in the upper plate 13 as well.
The deformation of the upper plate 13 is also prevented. Therefore, the generation of the gap between the ceiling base material 5 and the ceiling finish material 6 due to the deformation of the ceiling base material 5 and the upper plate 13 is eliminated, so that the ceiling level is not disturbed.

[0018]

As described above, since the ceiling bar suspension device of the present invention is constructed as described above, the following effects can be obtained.

1) According to the ceiling bar suspension device of the first aspect, since the tightening screw is arranged at a position to push the upper end corner portion of the ceiling base material, even if a downward load is applied to the ceiling finish material. A bending moment due to a tightening screw can be suppressed to a small value at the upper end flange portion of the ceiling base material, and deformation of the upper flange portion of the ceiling base material can be prevented.
Moreover, since the lateral width of the upper plate is formed so as to be close to the tightening screw diameter, the bending moment of the upper plate can be suppressed to a small value, and deformation of the upper plate can be prevented.
Therefore, there is no gap between the ceiling base material and the ceiling bar, and the accuracy at the ceiling level can be maintained.

2) According to the suspending device for a ceiling bar according to claim 2, in order to regulate the mounting direction so that the tightening screw is located at the upper end corner of the ceiling base material on one of the support pieces on the same side. Since the protrusion protruding to the front open portion of the ceiling base material is formed, it is possible to easily attach the suspension device at an appropriate position and facilitate the suspension work of the ceiling bar.

[Brief description of drawings]

FIG. 1 is a perspective view seen from the back of the ceiling showing an example of a system ceiling equipped with a suspension device of the present invention.

FIG. 2 is a cross-sectional view of essential parts showing a suspension device of the present invention.

FIG. 3 is a perspective view showing a usage state of the lifting device of the present invention.

FIG. 4 is an exploded perspective view showing a main part of a system ceiling.

FIG. 5 is a diagram showing a suspension device according to the present invention, FIG.
Is a front view with the tightening screw removed, and FIG. 7B is a side view with the ceiling base material attached.

FIG. 6 is a plan view showing a state in which a tightening screw of the suspension device is removed.

FIG. 7 is a perspective view showing a usage state of a conventional suspension device.

FIG. 8 is a diagram illustrating a usage state of a conventional suspension device,
(A) is a side view and (b) is a front view.

[Explanation of symbols]

 5 Ceiling Base Material 6 Ceiling Finishing Material (Ceiling Bar) 7 Lifting Device 12 Tightening Screws 13 Upper Plates 14a to 14d Support Pieces 19 Upper End Corner of Ceiling Base Material wa Horizontal Width of Upper Plate

Claims (2)

[Claims] 1. A rectangular upper plate having a tightening screw is formed by bending four support pieces downward from both sides in the longitudinal direction and straddling a ceiling base material having a U-shaped cross section between the support pieces on the same side and facing each other. In the ceiling bar suspension device that locks the ceiling bar at the lower end of the support piece, the tightening screw is arranged at a position to push the upper end corner of the ceiling base material, and the lateral width dimension of the upper plate and the tightening screw diameter are set. A ceiling bar suspension device characterized in that the width of the upper plate is narrowed so as to be close to. 2. A protrusion projecting to the front open portion of the ceiling base material is formed on one of the support pieces on the same side so that the fastening screw is positioned at the upper end corner of the ceiling base material so as to regulate the mounting direction. The suspension device for a ceiling bar according to claim 1, wherein