JP2003013540A - Ceiling support structure for system ceiling - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To develop a ceiling plate support structure for a system ceiling which can exhibit excellent seismic resistance against vertical and horizontal shaking at the time of an earthquake and has excellent workability. A main bar (1), a cross bar (2) orthogonal to the main bar (1), and a holding portion (34) for attaching the main bar (1) and the cross bar (2) are formed below a vertical piece (31). A hanger member (3) for suspending the main bar (1) and the crossbar (2) from the floor above the floor, a suspension bolt (4) to which the hanger member (3) is attached, and the suspension It consists of a brace material (5) installed between bolts (4), and a member (1) and a crossbar
(2) The hanging bolts (4) are attached so that the orientation of the vertical pieces (31) of the hanger member (3) are orthogonal to each other and are orthogonal to each other along the main bar (1) and the crossbar (2). Brace material (5) inclined between the suspension bolts (4)
Is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling board support structure for a system ceiling having excellent earthquake resistance.

[0002]

2. Description of the Related Art An upper end of a hanging bolt (4 ') is fixed to a lower surface of a floor above and below a floor, and a hanging hanger member (3') is attached to a lower end of the hanging bolt (4 ') hung from the floor. The clamp part (34 ') provided on the vertical piece (31') of the hanger member (3 ') is clamped and fixed to the mounting head (11') of the main bar (1 '), and the main bar (1') is attached to the ceiling part. )
Are arranged in parallel and the crossbar is placed between the main bars (1 ').
(2 ') are arranged so that they are orthogonal to each other, and the end portion of the crossbar (2') is fixed to the main bar (1 '). There is.

FIG. 14 shows an example of such a case.
A plurality of hanger members (3 ') formed by bending a metal plate having a thickness of 30 mm and a thickness of about 1.6 mm in the same direction in the main bar.
Attach it to (1 ') and attach this hanger member (3') to the hanging bolt.
I hang it at (4 '). It is also known that the metal brace material (5 ') is partially arranged diagonally between the suspension bolts (4') attached to the main bar (1 ') for reinforcement. Although not shown, it is also known to hang and reinforce the main bar and the cross bar with a numbered wire.

In the above case, the hanger member (3 ')
If only suspending the main bar (1 ') with the suspension bolts (4') via the, the vertical pieces (31 ') of all hanger members (3')
The installation direction of the main bar (1 ') corresponds to the direction of the main bar (1'), and in the event of an earthquake, the hanger member (3 ') is relatively strong against shaking in the longitudinal direction of the main bar (1'). Although it has earthquake resistance, the hanger member (3 ') may come off the main bar mounting head (1') or the clamping part (34 ') may be damaged by shaking in the direction orthogonal to this. However, the earthquake resistance was not necessarily great.

In addition to this, when the metal brace material (5 ') is used, since the mounting direction of the metal brace material (5') is orthogonal to the main bar (1 '), the above-mentioned main Although reinforcement is made against shaking in the direction orthogonal to the bar (1 '), the strength in the width direction of the vertical piece (31') of the hanger member (3 ') and the reinforcement by the metal brace material (5') The seismic resistance was significantly different, and although the seismic resistance was strengthened by the metal brace material (5 '), there was a possibility of damage depending on the input direction of the shaking, and the fear of seismic resistance was not resolved. Especially, the torsional stress and bending stress caused by the shaking due to the earthquake are concentrated especially at the intersection of the main bar (1 ') and the cross bar (2'), and the intersection of the main bar (1 ') and the cross bar (2'). It damages a part or the hanger member (3 ') attached to this part.

Further, when the main bar (1 ') and the cross bar (2') are suspended by using a numbered wire, not only the above-mentioned problems are still solved but also the space above the ceiling where the scaffold is unstable is narrow. In the above, there is a problem that it is very difficult to pull the number wire tightly and to bind and fix it, and the workability is very poor.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and is capable of exhibiting excellent seismic resistance that is well balanced against vertical and horizontal shaking when an earthquake occurs. This is to develop a ceiling board support structure for a system ceiling with excellent workability.

[0008]

[Means for Solving the Problems] The ceiling plate support structure for a system ceiling according to claim 1 includes a main bar (1),
A cross bar (2) arranged orthogonally to this and a sandwiching part (34) formed by bending a plate material and attaching the main bar (1) or the cross bar (2) to the lower part of the vertical piece (31) thereof. ) Is formed, and a hanger member (3) for suspending the main bar (1) and the cross bar (2) from the upper and lower floors of the floor, and the hanger member.
Suspension bolt (4) equipped with (3), and the suspension bolt (4)
A ceiling plate support structure for a system ceiling composed of a brace material (5) installed between the members, and a vertical piece (31) of a hanger member (3) on each of the member (1) and the crossbar (2). Are installed so that their directions are orthogonal to each other, and are inclined between the suspension bolts (4) so that they are orthogonal to each other along the main bar (1) and the crossbar (2). Brace material (5) is erected ”.

According to this, since the hanger member (3) and the brace member (5) are arranged vertically and horizontally at appropriate places on the system ceiling, the system ceiling is reinforced vertically and horizontally and not only in one direction but also in a direction orthogonal thereto. It will have sufficient seismic resistance against the shaking of the system and the reliability of the system ceiling against earthquakes will be improved.

[0010] "Claim 2" is at least one of the intersections of the main bar (1) and the cross bar (2) with respect to the mounting position of the hanger member (3) according to claim 1. It is attached in the vicinity of the intersection of the parts ". When a shake due to an earthquake is input to the system ceiling, the bending stress and torsion stress concentrate at the intersection. By mounting the hanger member (3) in the vicinity of the intersection as described above, the intersection can be reinforced, which helps improve the earthquake resistance of the entire system ceiling.

The claim 3 relates to a method of attaching the hanger member (3) to the suspension bolt (4). "The horizontal bolt (32) provided at the upper end of the vertical strip (31) is attached to the suspension bolt (4). Has a through hole (33) through which the lower end portion of is inserted and fixed by a nut (6). "

According to this, in addition to the action of claim 1 or 2, the nut is provided near the intersection of both bars (1) and (2).
With the simple operation of tightening (6), the hanger member (3) can be attached to the hanging bolt (4) that is hung vertically from the floor and floor, eliminating the need for cumbersome work when using a numbered wire as in the conventional example. This greatly improves workability.

"Claim 4" relates to the improvement of the vertical piece (31) of the hanger member (3) according to claims 1 to 3, "Vertical piece (31)"
Is formed so that at least the lower part thereof is wider than the upper part. " By doing so, torsional stress and bending stress are directly applied in the event of an earthquake, and the easily damaged lower part is reinforced to increase the earthquake resistance of the vertical piece (31) of the hanger member (3).

"Claim 5" is another modified example of the hanger member (3), wherein the hanger member (3) has two side surfaces (3a) (3b) having L-shaped horizontal cross sections which are orthogonal to each other. A vertical piece (31) having a holding part (34) formed on the side surfaces (3a) (3b), and a hanging bolt.
Horizontal piece (3) provided with a through hole (33) to which (4) is attached.
2) and the hanger member (3) has two side surfaces (3a) and (3b) which are orthogonal to each other. Because I only need a book,
Two separate hanger members (3) (3)
The workability is further improved compared to the case of attaching to (4).

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION A ceiling plate support structure for a system ceiling according to the present invention will be described below with reference to illustrated embodiments. The main bar (1) used to support the ceiling panel of the system ceiling is a vertical strip.
A long member having a substantially inverted T-shaped cross section, which is composed of (14) and a horizontal locking piece (15) which horizontally projects at its lower edge, and an engaging portion (12) is provided at the end of the elongated member. By connecting the engaging portions (12) to each other, the length can be further increased. Further, an elongated hole (13) for inserting the engaging portion (22) of the crossbar (2) is formed at an appropriate position of the main bar (1). And the vertical piece
A mounting head (11) wider than the vertical piece (14) is formed at the upper end of the (14) over the entire length of the vertical piece (14).

The cross bar (2) has the same cross-sectional shape as the main bar (1), and is different only in that its length is the unit length of the system ceiling. (22) is an engaging portion projecting from the end of the vertical piece (24) of the crossbar (2), (25)
Is a horizontal locking piece horizontally projected to the lower edge of the vertical piece (24), and (21) is a mounting head provided on the entire length of the upper edge of the vertical piece (24).

The suspension bolts (4) are long rod-shaped and are hung from the upper and lower floors of the floor at predetermined intervals, and a male screw is screwed at least at the lower end thereof. The main bar (1) and the cross bar (2) are attached to the hanger member (3) attached to the lower end of the suspension bolt (4) as shown in FIG. It may be attached via (7). The field edge receiver (7) is arranged along the wall of the room, and is attached to the field edge receiving hanger member (3z) attached to the lower end portion of the hanging bolt (4). Further, the hanger member (3y) for positioning is attached to the field receiver (7) at a predetermined interval, and the main bar (1) and the crossbar (2) are attached.
The installation interval of is set. The field frame receiver (7) is an elongated member having a U-shaped cross section, and is connected by a joint (not shown).

As described above, the hanger member (3) has a wide large hanger member (3w), a narrow small hanger member (3x),
Field hanger member (3z) and positioning hanger member
(3y), etc., both of which are attached to the lower end of the hanging bolt (4). These hanger members (3w) (3x) (3y) (3z)
The same number is given to the same part of, and the branch number of (-w) (-x) (-y) (-z) ... is added for distinction. Describe with a code. In order to avoid complication, the drawings are denoted by reference numerals with (-w) (-x) (-y) (-z) ... branch numbers.

The typical ones (see FIGS. 7 and 8) will be described below. The main body portion (30w) of the wide hanger member (3w) is formed by bending a metal plate, and has a vertical piece (31w) and a horizontal piece (32w) formed on the upper end thereof, and has a substantially 7-shaped shape. The horizontal piece (32w) is provided with a through hole (33w), the lower end of the hanging bolt (4) is inserted, and the nut (6)
It will be fixed at. Also, vertical piece (31w)
A clamping piece (35w) is arranged on the lower side surface of the
It is fixed in w). And the vertical strip (31
The lower end of w) and the lower end of the sandwiching piece (35w) are bent into a substantially U shape and a substantially inverted U-shape to form a sandwiching portion (34w). In addition,
The upper end of the sandwiching piece (35w) is slightly bent to the vertical piece (31w) side, and when the screw (36w) is tightened, this part serves as a fulcrum for mounting the main bar (1) and crossbar (2). The heads (11) and (21) are configured to be firmly clamped. This part is the upper end bent part (37w).

As shown in FIG. 9, the small hanger member (3x) has a normal width in which the width of the main body portion (30x) and the sandwiching piece (35x) is narrower by about half as compared with the wide hanger member (3w). Then, the holding piece (35x) is fixed with one screw (36x). In addition, the upper end portion (39x) of the holding piece (35x) is formed in a substantially T-shape, and is fitted into a substantially T-shaped hole (38x) formed in the main body portion (30x). The method of attaching the main bar (1) and the cross bar (2) is the same as that of the wide hanger member (3w).

As shown in FIG. 10, the positioning hanger member (3y) has a vertical piece (31y) having a substantially U-shaped mounting portion (311) bent at a right angle from its side edge. The screw (311y) is screwed to the field frame receiver (7) fitted in the mounting portion (311). Then, similarly to the hanger member (3w) (3x) described above, the lower end of the vertical piece (31y) and the lower end of the sandwiching piece (35y) are bent into a substantially U-shape and a substantially inverted U-shape to have a sandwiching portion (34y). Has been formed. Moreover, the upper end portion (39y) of the sandwiching piece (35y) is also formed in a substantially T shape, and the main body portion
It is fitted in a substantially T-shaped hole (38y) formed in (30x). The method of attaching the main bar (1) and the cross bar (2) is the same as that of the hanger members (3w) (3x).

The field-hanging hanger member (3z) is composed of a J-shaped body portion (30z) and a horizontal piece (32z) which is provided at the upper end of the hanger member and is fixed to the lower end of the suspension bolt (4) by a nut. The horizontal piece (33z) is provided with a through hole (33z). On the lower side surface of the vertical piece (31z) and on the sandwiching piece (34z) bent from the lower end thereof, a bent portion (35
z) is configured and the field rim receiver fitted in this part
(7) is engaged with the bent portion (35z) so as not to fall off.

Next, the ceiling plate support structure of the ceiling of this system will be described. Suspending bolts at a predetermined interval from the upper and lower floors
(4) is installed vertically. The hanging bolt (4) near the wall is fitted with the hanger member (3z) for receiving the frame, and the inner hanging bolt (4) is fitted with the large hanger member (3w) and the small hanger member (3x). ing. And a field edge receiver (7) is attached to the field edge receiving hanger member (3z), and a positioning hanger member (3y) is arranged at a predetermined interval on the field edge receiving member (7).
Are fixed with screws.

A plurality of main bars (1) are connected in accordance with the size of the room, and are arranged in parallel with the positioning hanger members (3y) and hanger members (3w) (3x) arranged in the same direction at predetermined intervals. It is installed. The crossbar (2) is arranged between these main bars (1), the engaging portion (22) of the crossbar (2) is inserted into the elongated hole (13), and the engaging portion of the crossbar (2) is inserted. (22) are connected to each other and are attached to the positioning hanger member (3y) and the hanger member (3w) (3x) in the same direction as the main bar (1). Therefore, the positioning hanger member (3y) and the hanger member (3w) attached to the main bar (1)
Vertical pieces (31w) (31x) (31y) of (3x) and positioning hanger member (3y) and hanger member (3w) (3x) vertical piece (31w) (31x) attached to the crossbar (2) ) (31y) mounting directions are orthogonal to each other. A part of the hanger members (3w) (3x) is attached near the intersection of the main bar (1) and the cross bar (2).

The brace material (5) extends along the main bar (1) and the cross bar (2) at least in the vicinity of the intersection of the main bar (1) and the cross bar (2). Brace members (5) are installed between the suspension bolts (4) so as to be orthogonal to each other and inclined with respect to the suspension bolts (4). A pair of brace materials (5) orthogonal to each other are arranged at the corners near the wall, and at other portions, the brace materials (5) are provided at right angles to the wall. In the center of the ceiling, a pair of braces (5) that are orthogonal to each other are 30
One is provided for each m ² . After constructing the ceiling board support structure of the system ceiling in this way, the ceiling member (8) and the certification device (9) are fitted on the horizontal locking pieces (15) of the main bar (1) and the cross bar (2). Complete the ceiling.

However, when the system ceiling is shaken when an earthquake occurs, horizontal bending stress or torsion stress is applied to the main bar (1) or the cross bar (2) and the main bar (1) or the cross bar (2) tries to wavy. Especially, the bending stress and the torsional stress are the main bar (1) and the cross bar.
Concentrated on the intersection of (2), deformation and damage are likely to occur at this portion.

Since at least a part of the positioning hanger member (3y) and the hanger member (3w) (3x) is fixed near the intersection of the main bar (1) and the cross bar (2), the holding part Bending stress and torsion stress are applied to (2w) (2x) (2y). Here, the positioning hanger member (3y) and the hanger member (3w) (3x) are vertical pieces (31w) (31x) (31y).
Are arranged at right angles to each other, and the hanging bolts are in place.
Since the brace material (5) is arranged so as to intersect (4) between the (4) and the slant, it is attached to the main bar (1) for positioning against shaking input parallel to the main bar (1). Hanger member (3y) and hanger member (3w) (3x) and brace material (5)
Resists the bending and torsional stress mentioned above, and crossbar (2)
The horizontal hanger member (3y) and the hanger member (3w) (3x) and the brace member (5) attached to the crossbar (2) resist the bending stress and the torsional stress. However, the hanger member (3y) for positioning and the hanger attached to the main bar (1) and the cross bar (2) against the shaking input from the diagonal direction to the main bar (1) and the cross bar (2) The members (3w) (3x) and the brace material (5) resist the respective component forces of the bending stress and the torsional stress to prevent the system ceiling from collapsing. As a result, the system ceiling is reinforced in place by the hanger members (3) and brace members (5) arranged vertically and horizontally, and has sufficient earthquake resistance, improving the reliability of the system ceiling against earthquakes. It will be.

FIG. 12 shows a modified example (3x1) of the hanger member (3).
The vertical piece (31x1) of the hanger member (3x1) is formed such that at least its lower portion is wider than its upper portion (in the case of the figure, it is gradually wider than its upper portion). In the event of an earthquake, the positioning hanger member (3y) and the hanger member (3w) (3x) holding part (34w) (34x) as described above.
Large bending stress or torsional stress is applied to (34y), which deforms or damages this part, but by forming it wider, the strength of this part can be further increased, and the hanger member (3x1) is earthquake resistant. Can be increased.

FIG. 13 shows another modified example (3x2) of the hanger member (3 pieces), which has two side surfaces having an L-shaped horizontal cross section which are orthogonal to each other.
A vertical piece (31x2) having (3x2a) (3x2b) and a sandwiching portion (34x2) formed on the two side surfaces (31x2a) (31x2b), and a hanging bolt.
Horizontal piece (32x2) with a through hole to which (4) is attached
It consists of and. Since this hanger member (3x2) has two side surfaces (31x2a) (31x2b) which are orthogonal to each other, if this is used, one suspension bolt (4) can be used for the main bar (1) and the crossbar (2).
Since the intersecting portions of can be attached at once, the workability is further improved as compared with the case where two separate hanger members (3) and (3) are separately attached to the suspension bolt (4). Note that one side edge of the two side surfaces (3x2a) (3x2b) may be configured to gradually widen from the upper portion to the lower portion.

[0030]

According to the ceiling plate supporting structure of the system ceiling of the present invention, since the hanger member and the brace member are arranged vertically and horizontally at appropriate places of the system ceiling, the system ceiling is reinforced vertically and horizontally, and not only in one direction. It will have sufficient seismic resistance against shaking in the direction orthogonal to, and the reliability of the system ceiling against earthquakes will be improved. Further, by attaching the hanger member to a portion near the intersection of at least a portion of the intersection of the main bar and the crossbar, the intersection can be reinforced and the seismic resistance of the entire system ceiling is improved. Furthermore, by forming a through hole into which the lower end of the hanging bolt is inserted and fixed with a nut in the horizontal piece provided at the upper end of the vertical piece, a simple operation of tightening the nut can be performed from the lower and upper floors. The hanger member can be attached to the hanging bolts that are installed vertically, which greatly improves the workability. Further, by forming at least the lower portion of the vertical piece of the hanger member to be wide, it is possible to increase the earthquake resistance of the vertical piece of the hanger member. Further, by providing the hanger member with two side surfaces having an L-shaped horizontal cross section which are orthogonal to each other, the attachment to the hanging bolt becomes easier and the workability is further improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a wall-side structure of a system ceiling of the present invention.

FIG. 2 is a perspective view of the inner structure of the system ceiling of the present invention.

FIG. 3 is a plan view of the system ceiling of the present invention.

FIG. 4 is a perspective view showing a mounting state of a hanger member of the present invention.

FIG. 5 is a perspective view showing a method of connecting a main bar used in the present invention.

FIG. 6 is a perspective view showing a method of connecting the crossbar to the main bar used in the present invention.

FIG. 7 is a side view of the large hanger member of the present invention.

8 is a front view of FIG.

FIG. 9 is a perspective view showing a mounting state of the small hanger member of the present invention.

FIG. 10 is a perspective view showing a mounting state of the positioning hanger member of the present invention.

FIG. 11 is a perspective view showing a mounting state of the field hanger member of the present invention.

FIG. 12 is a front view of another embodiment of the large hanger member of the present invention.

FIG. 13 is a perspective view of a hanger member used at the intersection of the present invention.

FIG. 14 is a partially omitted perspective view showing a conventional system ceiling installation state.

[Explanation of symbols]

(1) Main bar (2) Crossbar (3) Hanger member (4) Suspension bolt (5) Brace material (31) Vertical piece (34) Holding part

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Miki Kageyama             3-20 Nihonbashi Muromachi, Chuo-ku, Tokyo             Mitsui Fudosan Co., Ltd. (72) Inventor Masahide Sunahori             3-20 Nihonbashi Muromachi, Chuo-ku, Tokyo             Mitsui Fudosan Co., Ltd. (72) Inventor Takashi Nagaya             3-20 Nihonbashi Muromachi, Chuo-ku, Tokyo             Mitsui Fudosan Co., Ltd. (72) Inventor Yasushi Tani             3-20 Nihonbashi Muromachi, Chuo-ku, Tokyo             Mitsui Fudosan Co., Ltd. (72) Inventor Akio Yamamoto             Kashima-ken, 1-2-7 Moto-Akasaka, Minato-ku, Tokyo             Inside the corporation (72) Inventor Toshio Kobayashi             Kashima-ken, 1-2-7 Moto-Akasaka, Minato-ku, Tokyo             Inside the corporation (72) Inventor Yasuji Kurokawa             Kashima-ken, 1-2-7 Moto-Akasaka, Minato-ku, Tokyo             Inside the corporation (72) Inventor Jiro Okada             1 Ina, Inami-cho, Tonami-gun, Toyama Prefecture             Ken Kogyo Co., Ltd. (72) Inventor Kazuo Take             1 Ina, Inami-cho, Tonami-gun, Toyama Prefecture             Ken Kogyo Co., Ltd.

Claims (5)

[Claims] 1. A main bar, a cross bar arranged orthogonal to the main bar, and a plate member formed by bending, and a sandwiching portion for mounting the main bar or the cross bar is formed on a lower portion of a vertical piece of the main bar. A hanger member for suspending the main bar and the cross bar from the lower surface of the upper floor, a suspension bolt to which the hanger member is mounted, and a system ceiling composed of a brace material installed between the suspension bolts. In the ceiling plate supporting structure, the members and the cross bars are attached to the respective hanger members so that the vertical pieces of the hanger members are orthogonal to each other, and the suspension bolts are suspended between the suspension bolts so that they are orthogonal to each other along the main bar and the cross bar. A ceiling plate support structure for a system ceiling, in which a brace material is installed so as to be inclined with respect to a bolt. 2. The ceiling plate support for a system ceiling, wherein the hanger member according to claim 1 is attached to a portion near a crossing portion of at least a portion of a crossing portion of a main bar and a cross bar. Construction. 3. A horizontal piece provided on an upper end of a vertical piece of the hanger member according to claim 1 or 2, wherein a through hole into which a lower end portion of a suspension bolt is inserted and which is fixed with a nut is formed. The ceiling board support structure of the system ceiling, which is characterized in that 4. A ceiling plate support structure for a system ceiling, wherein at least a lower portion of the vertical piece of the hanger member according to any one of claims 1 to 3 is formed wider than an upper portion thereof. 5. The hanger member according to claim 2 or 4, wherein the hanger member has two side surfaces having an L-shaped horizontal cross section that are orthogonal to each other, and a vertical piece having a sandwiching portion formed on each of the two side surfaces, and a hanging piece. A ceiling plate support structure for a system ceiling, comprising: a horizontal piece provided with a through hole to which a bolt is attached.