JP5713754B2 - Ceiling foundation structure - Google Patents

Description

  The present invention relates to a ceiling foundation structure, and more particularly to a ceiling foundation structure with improved seismic performance.

  A conventional ceiling foundation structure includes a field edge and a field edge receiver orthogonal to the field edge, and is supported by being suspended from a building structure with a suspension bolt (see, for example, Patent Document 1). )

Further, as a base structure for partitioning, a structure in which a channel is inserted perpendicularly to a square steel has been conventionally known (for example, see Patent Document 2).
JP 2008-50784 A Japanese Patent No. 3462663

  By the way, in the case of the ceiling foundation structure disclosed in Patent Document 1, the orthogonal portion between the field edge and the field edge receiver is configured to be identified by using a joint fitting, or the clip-shaped member is bent by hand and stopped. doing. However, with such a fixed structure, when an earthquake occurs, there is a risk that the joint will come off or the bent part of the clip-shaped member will open and come off, and the field edge will fall with the ceiling. is there.

  In addition, when the ground structure disclosed in Patent Document 2 is applied to a ceiling ground structure, the field edge receiver (channel) is inserted from the place where the field edge receiver (channel) is firmly fitted through the square steel. However, in order to facilitate the insertion of the channel into the square steel, a door-like plate piece made of a part of the square steel is formed, and the channel is sandwiched between the plate pieces after the channel is inserted. Then, due to the rolling due to the earthquake, the channel moves in the horizontal direction, and it is sometimes insufficient to restrict the door-like plate piece in the left-right direction. There is a risk of malfunctioning.

  The present invention has been made in order to solve the above-described problems, and has been made for the purpose of providing a ceiling foundation structure having excellent seismic performance.

In the present invention, as a first means for solving the above-mentioned problems, a large number of hollow metal square tubes 1, 1... Arranged in parallel and fitting insertion holes 11, 11 formed in each metal square tube 1 are provided. .. In a ceiling foundation structure that is configured to pass through a number of channels 2, 2,... Orthogonal to the channel 2, and to hang the channels 2, 2 ... using suspension bolts 3, 3, ... The cross-section of the metal rectangular tube 1 is opened at the intersections A, A,... With the channels 2, 2,. Rutotomoni Attach the mounting brackets 6,6 ... to fitting groove 17 ... which downwardly is opened to be fitted from above and each channel 2 exhibits a shape are formed respectively, each of said The fixing brackets 6, 6,... Are installed at the lower ends of the fitting grooves 17, 17. It is, is mounted a support plate 26 that contacts the the lower end of each channel 2, 2 ....

By configuring as described above, the intersections A, A,... Between the metal rectangular tube 1 and the channels 2, 2,... Are firmly reinforced. Is fixed so as not to move in the left-right direction (that is, the horizontal direction). Therefore, Ri Do a ceiling foundation structure has excellent earthquake resistance to withstand tremors, and because the pitch of the channel 2 in the event of an earthquake can be prevented by the presence of the support plate 26, the ceiling foundation with excellent more seismic performance A structure is obtained .

In the invention of the present application, as a second means for solving the above-described problem, in the ceiling foundation structure provided with the first means, a fitting insertion hole in which the channel 2 is inserted into the metal rectangular tube 1 11, and an opening 12 that is continuous with the channel 2, and can be opened and closed at one side edge 12 a of the opening 12. In such a configuration, the channel 2 can be inserted while pushing the fixing piece 13 open, or the channel 2 can be inserted with the fixing piece 13 pushed open with fingers, and then the fixing piece 13 can be closed. Thus, the assembly of the channel 2 to the metal square tube 1 can be performed easily and reliably.

According to the first means of the present invention, a plurality of hollow metal square tubes 1, 1... Arranged in parallel and orthogonal to the fitting insertion holes 11, 11,. Each of the metal squares in the ceiling base structure configured to suspend the channels 2, 2... Using suspension bolts 3, 3. The crossing portions A, A,... Of the channels 2, 2,... In the cylinder 1 have a U-shaped cross section in which the lower part fitted to the metal square cylinders 1 is opened from the upper side. Fixing metal fittings 6, 6,... Each formed with fitting grooves 17, 17, which are opened from the upper side and fitted to each channel 2 from above, are attached to the metal rectangular tube 1 and the channels 2, 2,.・ The intersections A, A ... will be strongly reinforced, so that Even, channel 2, 2 ... is the left-right direction (i.e., horizontal direction) since to be fixed so as not to move, the ceiling foundation structure with excellent earthquake resistance that can withstand the tremors can be obtained and earthquake Since the pitching of the channel 2 at the time is prevented by the presence of the support plate 26, there is an effect that a ceiling foundation structure having further excellent seismic performance can be obtained .

As in the second means of the present invention, in the ceiling base structure provided with the first means, the metal rectangular tube 1 is formed with a closing port 12 continuous with the fitting insertion hole 11 through which the channel 2 is inserted. In addition, the one side edge 12a of the opening 12 can be opened and closed by using the one side edge 12a as a bent portion, and a fixed piece 13 adjacent to the channel 2 can be integrally projected. When configured, the channel 2 is inserted while pushing the fixed piece 13 open, or the channel 2 is inserted while the fixed piece 13 is pushed open with a finger, and then the fixed piece 13 is closed, the metal square tube 1 is formed. Assembling of the channel 2 can be performed easily and reliably.

It is a whole perspective view which shows the ceiling foundation structure concerning the reference example of this invention. It is an expansion perspective view which shows the principal part (A part of FIG. 1) in the ceiling base structure shown in FIG. It is an expansion perspective view of the fixing metal fitting in the ceiling base structure shown in FIG. It is an expansion perspective view which shows the principal part (B part of FIG. 1) in the ceiling base structure shown in FIG. It is an expansion perspective view which shows the principal part (c part of FIG. 1) in the ceiling base structure shown in FIG. It is an expansion perspective view which shows the principal part (D part of FIG. 1) in the ceiling base structure shown in FIG. It is an enlarged perspective view showing a main part (portion corresponding to the portion A of FIG. 1) in the ceiling foundation structure according to a first implementation mode of the present invention.

Hereinafter, with reference to the accompanying drawings, the configuration of a reference example which is a premise of the configuration of the first embodiment of the present invention and the first embodiment of the present invention configured based on the configuration of the reference example The configuration of will be described.

Reference Example FIGS. 1 to 6 show a ceiling foundation structure according to a reference example which is a premise of the configuration of the first embodiment of the present invention described later .

  As shown in FIG. 1, the ceiling base structure has a large number of hollow metal rectangular tubes 1, 1... Arranged in parallel and fitting insertion holes 11, 11.・ A large number of channels 2, 2,... Orthogonal to (see FIG. 2) are inserted, and the channels 2, 2,... Are suspended using suspension bolts 3, 3,. Yes. Reference numeral 4 denotes a support member having a U-shaped cross section that supports the end portions of the metal rectangular tubes 1, 1... 5 is an H-shaped steel that supports an intermediate portion of the metal square tubes 1, 1.

  As shown in FIG. 2, each of the metal square tubes 1 is a hollow formed by bending a metal plate cut into a predetermined width into a square tube shape so that both ends thereof are in contact at one corner. It is constituted by a simple metal plate square tube. One end portion of the metal plate is provided with an inverted J-shaped bent portion 31 which is bent inside the metal plate rectangular tube 1 and whose tip is bent outward. The other end portion of the metal plate is provided with an inverted U-shaped bent portion 32 on the inner side, and is formed as a corner-type connecting portion 33 which is continuously fitted and crimped to be continuous in the horizontal direction. ing. And the rib 34 which protrudes in a U-shape toward the inner side from the base end of the reverse U-shaped bending part 32 in this corner type connection part 33 is formed continuously in the horizontal direction. By comprising in this way, it becomes possible to select any four surfaces of the metal square cylinder 1 as an opening formation part and board sticking surface mentioned later. Further, the corner type connecting portion 33 can be prevented from coming off by the ribs 34, and the rigidity of the metal square tube 1 can be enhanced.

As shown in FIG. 2, each metal square tube 1 is formed with an opening 12 that is continuous with a fitting hole 11 through which the channel 2 is inserted. The mouth edge) 12a is openable and closable with the upper mouth edge 12a as a bent portion, and a fixed piece 13 proximate to the channel 2 is integrally projected. Reference numeral 14 denotes a tongue piece for maintaining the insertion state of the channel 2 into the insertion insertion hole 11, 15 denotes a long hole for facilitating bending formed in the upper opening edge 12 a, and 16 denotes the opening. A nose portion 12b for facilitating the bending formed in the upper lip 12a is a surplus space for inserting a finger formed continuously from the opening 12. With this configuration, the channel 2 can be inserted while the fixing piece 13 is pushed open, or the channel 2 can be inserted while the fixing piece 13 is pushed open with fingers, and then the fixing piece 13 is closed. Assembling of the channel 2 to the rectangular tube 1 can be performed easily and reliably.
By the way, a fixing bracket 6 to be described later is attached to each intersection A of the metal rectangular tubes 1, 1,... With the channels 2, 2,. As shown in FIGS. 2 and 3, the fixing metal 6 has a U-shaped cross-section with the lower part fitted to the metal rectangular tube 1 being opened from above and the upper part with respect to the channel 2. The fitting grooves 17 and 17 that are opened from below are formed, and the top surface 6a is attached to the upper surface 1a of the metal rectangular tube 1 using screws 18, and the side surface By attaching the lower end portions of both side portions 17a and 17a of the fitting groove 17 in 6b using screws 19 and 19, the metal rectangular tube 1 and the channel 2 can be strongly coupled at each intersection A. It can be done.

Further, in this reference example , as shown in FIG. 1, the lower end portion of the selected one of the suspension bolts 3, 3... That suspends the selected channel 2 and the channel 2 adjacent to the channel 2. Between the upper ends of the suspension bolts 3, 3 that suspend the suspension bolts 2, 2, diagonal reinforcing members 20, 20 having a U-shaped cross section are installed. As shown in FIG. 4, a mounting bolt 21 is fixed to the upper end portion of each oblique reinforcing member 20, and the tip end portion of the mounting bolt 21 is in relation to the upper end portion of the suspension bolt 3. A mounting bracket 22 having engaging grooves 22a and 22a to be engaged is screwed. On the other hand, the lower end portions of the diagonal reinforcing members 20 and 20 are attached in an obliquely upward posture to both ends of a U-shaped support member 24 attached to the suspension bolt 3 via the mounting bracket 23. Yes. In this way, there is no possibility that the ceiling base material collides with the surrounding walls due to the rolling at the time of the earthquake occurrence, but there is a possibility that the horizontal force due to the earthquake is concentrated near the lower ends of the diagonal reinforcing members 20 and 20. is there. Therefore, it is desirable to attach the fixing bracket 6 at the intersection A between the channel 2 and the metal rectangular tube 1 that are suspended by the suspension bolts 23 to which the lower ends of the diagonal reinforcing members 20 and 20 are attached.

  Further, the lower end portion of the suspension bolt 23 is supported by the channel 3 via a hanger 25 as shown in FIG.

  In the ceiling base structure constructed as described above, the intersections A, A,... Between the metal rectangular tubes 1, 1... And the channels 2, 2,. Will be. Therefore, the channels 2, 2,... Are fixed so as not to move in the left-right direction (that is, the horizontal direction) even in the event of an earthquake, and a ceiling foundation structure with excellent seismic performance that can withstand severe earthquakes is obtained. In addition, each metal rectangular tube 1 is formed with an opening 12 continuous to the fitting hole 11 through which the channel 2 is inserted, and the one side edge 12a of the opening 12 is folded. By opening and closing the fixed piece 13 as a bent portion and projecting the fixed piece 13 close to the channel 2 integrally, the channel 2 can be inserted while pushing the fixed piece 13 open, or the fixed piece 13 can be inserted with fingers. If the fixed piece 13 is closed after the channel 2 is inserted in the pushed state, the assembly of the channel 2 to the metal square tube 1 can be performed easily and reliably.

The first embodiment Figure 7 corresponds to the main part (A portion in FIG. 1 described above ceiling foundation structure according to the first embodiment of the composed present invention assumes the configuration of the reference example The perspective view which expanded the part) is shown.

In this case, first, the fixing metal 6 in FIG. 7 corresponds to the fixing metal 6 in the ceiling base structure according to the above-described reference example , and the fixing metal 6 is installed at the lower end portion of the fitting groove 17 and is connected to the channel. A support plate 26 made of metal (for example, made of steel plate) to be in contact with the lower end of 2 is attached. The support plate 26 is attached by tightening the screws 19 and 19 simultaneously with the attachment of the fixing bracket 6 to the intersection A between the metal rectangular tube 1 and the channel 2. When configured in this manner, the pitching of the channel 2 at the time of the occurrence of an earthquake is prevented by the presence of the support plate 26, and a ceiling foundation structure with further excellent seismic performance can be obtained.

Since other configurations and operational effects are the same as those in the above-described reference example , detailed description is omitted to avoid duplication.

The present invention is not limited to the one described in the reference example and the first embodiment, and it is needless to say that the design can be changed as appropriate without departing from the gist of the invention.

1 is a metal square tube
2 is the channel
3 is a hanging bolt
6 is a fixture
11 is an insertion hole
12 is an opening
12a is a lip on one side
13 is a fixed piece
17 is a fitting groove
26 is a support plate
A is the intersection

Claims (2)

A large number of hollow metal square tubes (1), (1), which are arranged in parallel, and a large number of channels (2), (2), which are orthogonal to the respective metal square tubes (1) are inserted. A ceiling base structure configured to suspend the channels (2), (2),... Using suspension bolts (3), (3),. In the intersections (A), (A)... With the channels (2), (2)... In 1), there are lower portions fitted to the respective metal rectangular tubes (1) from above. opened U-shaped cross-section and caused a and the channel (2), (2) is downwardly fitted from above is open to ... fitting groove (17), are formed respectively (17) fixed bracket (6), (6) Rutotomoni fitted with ..., respective fixing brackets (6), (6) the ..., the fitting groove (17), ( Ceiling foundation structure is bridged to the lower part, the channel (2), characterized in that the attachment (2) supporting plate that contacts the lower end of ... (26) 7). Each metal square tube (1) has an opening (12) continuous to the fitting hole (11) through which the channel (2) is inserted, and one side edge (12a) of the opening (12). The one-side lip (12a) is openable and closable as a bent portion, and a fixed piece (13) close to the channel (2) is integrally projected . Ceiling foundation structure.

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