System ceiling reinforcement structure

Abstract

This invention provides a system ceiling reinforcement structure that can effectively reinforce the connecting intersections of the ceiling substrate materials of a system ceiling. [Solution] The ceiling frame 3 is formed by assembling ceiling base materials 2 such as main bars (main T-bars 10a (main cross T-bars 10b)) and cross bars (main cross T-bars 10b (cross T-bars 10c)) consisting of T-bars 6 in a grid pattern, and a long reinforcing member 20 is attached to the lower end thereof along the ceiling base material 2. At the connecting intersection 5a (5b) between the main bar (main T-bars 10a (main cross T-bars 10b)) and a pair of cross bars (main cross T-bars 10b (cross T-bars 10c)) that intersect and connect from both sides thereof, the long reinforcing member 20 is attached continuously to the pair of cross bars (main cross T-bars 10b (cross T-bars 10c)) and is positioned across the connecting intersection 5a (5b).

Description

Technical Field

[0001] The present invention relates to a system ceiling reinforcement structure.

Background Art

[0002] The system ceiling includes a ceiling structural frame formed by assembling ceiling base materials composed of main bars and cross bars in a lattice pattern. The ceiling structural frame is supported at the lower end of suspension bolts suspended from upper structural frames such as upper floor slabs and roof slabs via suspension hangers (suspension fittings) (see, for example, Patent Document 1). In such a system ceiling, the main bars and cross bars are configured as T-bars. There has been a type in which a long decorative member covering the opening of a groove is attached to the lower end of the T-bar to enhance the design appearance (see, for example, Patent Document 2).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] Meanwhile, in recent years, improvement in the strength of ceiling base materials composed of T-bars has been required. However, at the connecting intersection between the main bar and the cross bar, the main bar is a continuous through material, but the cross bar is arranged as two separate members on opposite sides of the main bar, so there is a problem that the cross bar is easily detached when swayed along the longitudinal direction of the main bar. In addition, the decorative member of Patent Document 2 is made of resin and cannot reinforce the T-bar.

[0005] Therefore, the present invention has been made to solve the above-mentioned problems, and aims to provide a system ceiling reinforcement structure that can suitably reinforce the connecting intersections of the ceiling base materials of a system ceiling. [Means for solving the problem]

[0006] The invention according to claim 1 for solving the above problem is a system ceiling reinforcement structure comprising a ceiling frame formed by assembling a main bar made of T-bars and ceiling base materials such as crossbars in a grid pattern, and a long reinforcing member attached to the lower end thereof along the ceiling base materials, wherein at the connection intersection between the main bar and a pair of crossbars that intersect and connect from both sides thereof, the long reinforcing member is attached continuously to the pair of crossbars and is arranged to straddle the connection intersection.

[0007] According to the system ceiling reinforcement structure of the present invention, at the connecting intersection, a long reinforcing member is attached so as to connect the main bar, which is a continuous member, and the crossbar that intersects it, so that the crossbars are integrated with each other and are effectively reinforced. As a result, even if shaking occurs in the direction along the main bar, the crossbars are less likely to come off.

[0008] In the system ceiling reinforcement structure of the present invention, it is preferable that the long reinforcing member is made of a metal material. With such a configuration, the strength of the long reinforcing member is increased.

[0009] Furthermore, in the system ceiling reinforcement structure of the present invention, it is preferable that the elongated reinforcing member comprises a locking portion that is inserted into a groove at the lower end of the T-bar and engaged with a lip portion at the tip of the groove, and protruding portions that extend from the lower end of the locking portion to both sides in the width direction. With such a configuration, it is possible to easily install it on the T-bar and the aesthetic appearance can be enhanced by covering the lower end of the T-bar.

[0010] Furthermore, in the system ceiling reinforcement structure of the present invention, it is preferable that the locking portion comprises an inclined portion that narrows as it goes upward and a locking groove into which the lip portion fits. With such a configuration, the long reinforcing member can be easily installed by pushing it into the groove of the T-bar from below.

[0011] Furthermore, in the system ceiling reinforcement structure of the present invention, it is preferable that a pair of locking portions are provided in the width direction, with a gap formed between the pair of locking portions. With such a configuration, the pair of locking portions deform to come closer together, making it easier to push the long reinforcing member into the groove of the T-bar. [Effects of the Invention]

[0012] According to the present invention, excellent effects such as being able to suitably reinforce the connecting intersections of the ceiling base materials of a system ceiling are achieved. [Brief explanation of the drawing]

[0013] [Figure 1] This is a plan view showing the ceiling base material of a system ceiling reinforcement structure according to an embodiment of the present invention. [Figure 2] This is a top view showing the arrangement of long reinforcing members in a system ceiling reinforcement structure according to an embodiment of the present invention. [Figure 3] This is a perspective view showing the ceiling underlayment. [Figure 4] This is an exploded perspective view showing the joints of the ceiling substructure materials. [Figure 5] This is a perspective view showing the joints of the ceiling substructure materials. [Figure 6] This figure shows the ceiling base material and long reinforcing material of a system ceiling reinforcement structure according to an embodiment of the present invention, where (a) is an end view before the installation of the long reinforcing material, and (b) is an end view after the installation of the long reinforcing material. [Figure 7] (a) and (b) are end views showing a system ceiling reinforcement structure according to a modified embodiment of the present invention. [Modes for carrying out the invention]

[0014] A system ceiling reinforcement structure according to an embodiment of the present invention will be described in detail with reference to the drawings. In this embodiment, a grid-type system ceiling will be used as an example. The system ceiling reinforcement structure 1 according to this embodiment comprises a ceiling frame 3 formed by assembling ceiling base materials 2 consisting of T-bars 6 in a grid pattern, and a long reinforcing member 20 attached to the lower end thereof along the ceiling base materials 2.

[0015] As shown in Figure 1, the grid-type system ceiling includes a ceiling frame 3 formed by assembling main bars and crossbars, which are ceiling base materials 2, in a grid pattern. Ceiling panels 4 (see Figure 3), lighting fixtures, air conditioning equipment (not shown), etc., are installed in each section partitioned by the ceiling frame 3. The main bars are members that run in a straight line without being interrupted at the connecting intersections 5a and 5b, while the crossbars are members that are interrupted at the connecting intersections 5a and 5b and connected to both sides of the main bar 2a, respectively. In other words, the relationship between the bars changes depending on their positional relationship at the connecting intersections 5a and 5b.

[0016] As shown in Figures 4 to 6, in this embodiment, the ceiling base material 2 is composed of a T-bar 6 having an upper edge portion 6a, a vertical plate portion 6b, and a lower groove portion 6c. The upper edge portion 6a is the portion to which the support fitting 8 that connects the ceiling base material 2 to the suspension bolt 7 is fixed, and has a rectangular box-shaped cross-section. The vertical plate portion 6b is the portion that forms the wall of the T-bar 6, and extends downward from the middle of the width direction of the lower surface of the upper edge portion 6a. The lower groove portion 6c is a groove-shaped portion that opens downward, and is formed to spread out on both sides in the width direction from the lower end of the vertical plate portion 6b. The lower groove portion 6c has a bottom plate portion 9a that is continuous with the lower end of the vertical plate portion 6b, a hanging wall portion 9b that hangs down from the end of the bottom plate portion 9a, and a lip portion 9c that is connected to the lower end of the hanging wall portion 9b.

[0017] As shown in Figures 1 to 3, in the present embodiment, the ceiling base material 2 is configured to include main T-bars 10a, main cross T-bars 10b, and cross T-bars 10c. The main T-bars 10a are long members extending in one direction (the left-right direction in Figure 1), and are arranged in a plurality of rows at predetermined intervals. The main cross T-bars 10b are long members extending in a direction orthogonal to the main T-bars 10a, are bridged between adjacent main T-bars 10a, 10a, and are arranged in a plurality of rows at predetermined intervals. The cross T-bars 10c are long members extending in a direction orthogonal to the main cross T-bars 10b (a direction parallel to the main T-bars 10a), are bridged between adjacent main cross T-bars 10b, 10b, and are arranged in a plurality of rows at predetermined intervals. The cross T-bars 10c are arranged at intermediate portions of the mutually parallel main T-bars 10a, 10a, and the main T-bars 10a and the cross T-bars 10c are alternately arranged at predetermined intervals.

[0018] At the connection intersection 5a between the main T-bar 10a and the main cross T-bar 10b, the main T-bar 10a serves as a "main bar" that is provided in a straight continuous line without being divided, and the main cross T-bar 3b serves as a "cross bar" that is divided and connected to both side surfaces of the main T-bar 10a respectively. Further, at the connection intersection 5b between the main cross T-bar 10b and the cross T-bar 10c, the main cross T-bar 10b serves as a "main bar" that is provided in a straight continuous line without being divided, and the cross T-bar 10c serves as a "cross bar" that is divided and connected to both side surfaces of the main cross T-bar 10b respectively.

[0019] In Figures 4 and 5, the connection intersection 5a between the main T-bar 10a and the main cross T-bar 10b is illustrated. In Figures 4 and 5, the main T-bar 10a serves as the main bar, and the main cross T-bar 10b serves as the cross bar. As indicated by the reference numerals in parentheses in Figures 4 and 5, at the connection intersection 5b between the main cross T-bar 10b and the cross T-bar 10c, the main cross T-bar 10b serves as the main bar, and the cross T-bar 10c serves as the cross bar.

[0020] As shown in Figures 4 and 5, a bendable locking piece 11 is provided at the end of the main cross T-bar 10b (crossbar) on the side of the connecting intersection 5a, which is separated at the connecting intersection 5a. The bendable locking piece 11 is continuous with the tip of the vertical plate portion 6b and is formed by bending at a right angle to the right when viewed from the tip side. The vertical plate portion 6b of the main T-bar 10a (main bar), which is provided in a straight line (continuous) at the connecting intersection 5a, is provided with a locking recess 12 into which the bendable locking piece 11 is inserted. The locking recess 12 is formed in a U-shape in cross-section by cutting and raising a part of the continuous vertical plate portion 6b. The bendable locking piece 11 is inserted and locked inward into the U-shaped portion of the locking recess 12 along the longitudinal direction of the vertical plate portion 6b. The locking recesses 12 are formed in pairs by being pushed out on both sides of the vertical plate portion 6b, and are configured to lock the bent locking pieces 11 of the main cross T-bar 10b (crossbar) which are connected from both sides of the main T-bar 10a (main bar). A notch 13 is formed in the lower edge groove portion 6c of the main T-bar 10a (main bar) at the connecting intersection portion 5a. The notch 13 has a gate-like shape equivalent to the cross-sectional shape of the lower edge groove portion 6c of the main cross T-bar 10b (crossbar), and is formed from the vertical wall portions 9b to the lip portions 9c on both sides of the lower edge groove portion 6c.

[0021] The elongated reinforcing member 20 is a member that reinforces the ceiling substrate material 2 and is attached along the ceiling substrate material 2. As shown in Figure 6, the elongated reinforcing member 20 is attached to the lower edge groove portion 6c of the T-bar 6. The elongated reinforcing member 20 is made of a metal material and has a locking portion 21 and an overhanging portion 22.

[0022] The locking portion 21 is the part that is inserted into the lower groove portion 6c and locked to the lip portion 9c, and a pair of them are provided at intervals in the width direction of the long reinforcing member 20. The locking portion 21 comprises an inclined portion 23, a recessed groove portion 24, and a locking groove 25. The inclined portion 23 is formed on the upper surface of the locking portion 21 so as to narrow as it goes upward. By providing the inclined portion 23, the inclined portion 23 pushes open the lip portion 9c, making it easier to push the long reinforcing member 20 into the lower groove portion 6c. The recessed groove portion 24 is the part that forms the gap between the locking portions 21 and has a U-shape that is open at the top. By providing the recessed groove portion 24, the locking portions 21, 21 can be deformed inward, making it easier to push the long reinforcing member 20 into the lower groove portion 6c. The locking groove 25 is the part into which the lip portion 9c fits, and is formed as a sideways opening at the lower part of the locking portion 21.

[0023] The protruding portion 22 is the part that extends from the lower end of the locking portion 21 to both sides in the width direction, and covers the lower edge groove portion 6c of the T-bar 6 from below. The width dimension of the protruding portion 22 is the same as the width dimension of the lower end of the T-bar. The corners of the lower surface of the protruding portion 22 are chamfered and inclined.

[0024] The long reinforcing members 20 are attached to both the main bar and the crossbar. At the connecting intersections 5a and 5b, the long reinforcing members 20 are continuous with a pair of crossbars that intersect and connect from both sides of the main bar, and are attached across the main bar. The long reinforcing members 20 are attached by passing through the notches 13 formed in the lower edge grooves 6c of the main bar. The long reinforcing members 20 attached to the main bar are separated at the connecting intersections 5a and 5b and abut against the side surfaces of the long reinforcing members 20 attached to the crossbars.

[0025] Specifically, as shown in Figure 2, the first long reinforcing member 20a is attached to the main T-bar 10a, the second long reinforcing member 20b is attached to the main cross T-bar 10b, and the third long reinforcing member 20c is attached to the cross T-bar 10c. The first long reinforcing member 20a, the second long reinforcing member 20b, and the third long reinforcing member 20c have the same shape, and are distinguished by their name depending on the T-bar to which they are attached. At the connecting intersection 5a where the main T-bar 10a becomes the main bar and the main cross T-bar 10b becomes the crossbar, the second long reinforcing member 20b is attached continuously across the main T-bar 10a, and the first long reinforcing member 20a is divided at the connecting intersection 5a and abuts against the side surface of the second long reinforcing member 20b. On the other hand, at the connecting intersection 5b where the main cross T-bar 10b becomes the main bar and the cross T-bar 10c becomes the cross bar, the third long reinforcing member 20c is continuously mounted across the main cross T-bar 10b, and the second long reinforcing member 20b is divided at the connecting intersection 5b and abuts against the side surface of the third long reinforcing member 20c.

[0026] According to the system ceiling reinforcement structure 1 with the above configuration, at the connecting intersections 5a and 5b, the long reinforcing members 20 are attached so as to connect the main bar, which is a continuous member, with the crossbars that intersect it, so that the crossbars are integrated with each other and are effectively reinforced. As a result, even if shaking occurs in the direction along the main bar, the crossbars are less likely to shift laterally, and therefore the crossbars are less likely to come off.

[0027] Since the elongated reinforcing member 20 is made of metal, its strength is increased. Furthermore, the elongated reinforcing member 20 can be easily installed by locking the locking portion 21 onto the lip portion 9c, and its aesthetic appeal can be enhanced by covering the lower end of the T-bar 6 with the overhanging portion 22. In addition, since the locking portion 21 is equipped with an inclined portion 23 and a locking groove 25, the elongated reinforcing member 20 can be easily pushed into the lower edge groove portion 6c of the T-bar 6 from below, and can be easily installed simply by pushing it in. Moreover, since the pair of locking portions 21, 21 are arranged with a gap in the width direction, the pair of locking portions 21, 21 can deform to come closer together, making it easier to push the elongated reinforcing member 20 into the lower edge groove portion 6c of the T-bar 6.

[0028] Although embodiments for carrying out the present invention have been described above, the present invention is not limited to the above embodiments, and the material, shape, size, etc. can be appropriately modified without departing from the spirit of the present invention. For example, in the above embodiments, the cross-sectional shape of the elongated reinforcing member 20 is not limited to the above embodiments. For example, as shown in Figure 7(a), the locking portion 21 may be a solid shape without a groove. The other components are the same as in the above embodiments, so the same reference numerals are used and their description is omitted. With such a configuration, the strength of the elongated reinforcing member 20 is increased.

[0029] Furthermore, as shown in Figure 7(a), a lower groove 26 that is recessed upward may be formed on the lower surface of the elongated reinforcing member 20. Note that the other components are the same as those of the elongated reinforcing member 20 in Figure 7(a), so the same reference numerals are used and their explanation is omitted. With this configuration, a single line runs through the elongated reinforcing member 20 when viewed from below, giving it a sharp appearance. [Explanation of Symbols]

[0030] 1. System ceiling reinforcement structure 2. Ceiling underlayment 3 Ceiling frame 5a,5b Connecting intersection 6 T-bar 6c Lower edge groove 9c Lip part 10a Main T-bar 10b Main Cross T-bar 10c Cross T-bar 20 Long reinforcing members 21 Locking part 22 Overhang 23 Slope 25 Locking groove

Claims

1. It comprises a ceiling frame formed by assembling a main bar consisting of T-bars and ceiling base materials such as crossbars in a grid pattern, and a long reinforcing member attached to the lower end along the ceiling base material. At the connection intersection between the main bar and the pair of crossbars that intersect and connect from both sides thereof, the elongated reinforcing member is attached continuously to the pair of crossbars and positioned across the connection intersection. A system ceiling reinforcement structure characterized by the following features.

2. The aforementioned elongated reinforcing member is formed of a metal material. The system ceiling reinforcement structure according to feature 1.

3. The long reinforcing member comprises a locking portion that is inserted into a groove at the lower end of the T-bar and engages with a lip at the tip of the groove, and protruding portions that extend from the lower end of the locking portion to both sides in the width direction. The system ceiling reinforcement structure according to claim 2.

4. The locking portion comprises a sloping portion that narrows as it extends upward and a locking groove into which the lip portion fits. The system ceiling reinforcement structure according to claim 3.

5. The aforementioned locking portion is provided in a pair in the width direction, A gap is formed between the pair of locking parts. The system ceiling reinforcement structure according to claim 3.

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