JP2003213835A - Linear connecting fitting for system ceiling - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent torsion of main ceiling support bars to attain linearity of the bars by using one linear connecting fitting while restraining the main ceiling support bars from slipping off. <P>SOLUTION: A plurality of main ceiling support bars 4 installed almost linearly to each other have fitting parts 11 provided in a longitudinal direction, and both side parts are fitted into the fitting parts of the adjacent main ceiling support bars 4 to connect the end parts of the main ceiling support bars 4. In this constitution, the linear connecting fitting has a fitting caulking part 2 brought into pressure contact with the fitting part 11 of the main ceiling support bar 4; a mounting locking part 1 locked to the main ceiling support bar 4 to impede slip-off from the fitting part 11; and a pair of main ceiling support bar insert parts 3 bent from the intermediate part of the side face on the main ceiling support bar 4 side toward both ends. The end parts of the main ceiling support bars 4 are inserted into a pair of main ceiling support bar insert parts 3 for connection. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a straight connecting fitting for a system ceiling.

[0002]

2. Description of the Related Art Conventionally, in a straight connecting fitting for a system ceiling, which connects end portions of a plurality of main ceiling supporting bars installed in a substantially straight line to each other, for example, an actual flat wire 6-28027.
As disclosed in Japanese Unexamined Patent Publication No. 2003-187, two straight connecting metal fittings are used for the main ceiling supporting bar connecting portion, and the metal fitting caulking portion is simply caulked. At this time, fit one half of the straight connection fitting into the fitting part of one main ceiling support bar, fit the other half into the fitting part of the other main ceiling support bar, and crimp the fittings and crimp it to the fitting part. To do.

[0003]

The conventional linear connecting metal fitting has a structure in which the metal fitting caulking portion is simply caulked as described above. When the main ceiling support bar is pulled, the metal fitting caulking portion slips and The ceiling support bar could be displaced.

Further, in order to prevent the main ceiling support bar from twisting and to bring out the straight line of the bar, it was necessary to use two connecting fittings for the end portion of the main ceiling support bar. Therefore, there is a problem that the number of members increases.

Therefore, an object of the present invention is to prevent the main ceiling support bar from slipping out and to prevent the main ceiling support bar from being twisted by using one straight connecting metal fitting, and to provide a straight line for the bar. It is to provide a straight-line fitting.

[0006]

In order to solve the above-mentioned problems, a linear ceiling fitting for a system ceiling according to a first aspect of the present invention is provided with a plurality of main ceiling support bars installed substantially linearly in the longitudinal direction. A straight connecting fitting for a system ceiling that has end portions of the main ceiling support bar by connecting both ends to the fitting portions of the adjacent main ceiling support bars. And a metal fitting caulking portion that is pressed against the fitting portion of the main ceiling support bar, an attachment locking portion that locks to the main ceiling support bar and prevents the fitting portion from coming off from the fitting portion, And a pair of main ceiling support bar insertion portions that are bent from the middle portion of the side surface on the side of the main ceiling support bar toward both ends, and connect the end portions of the main ceiling support bar to each other between the pair of main ceiling support bars. Connect to the plug part.

[0007] As described above, the metal fitting caulking portion press-contacted to the fitting portion of the main ceiling support bar, the attachment locking portion which is locked to the main ceiling support bar and prevents the fitting ceiling portion from coming off from the fitting portion, It has a pair of main ceiling support bar insertion parts that are bent from the middle part of the side surface on the side of the ceiling support bar toward both ends, and the end parts of the main ceiling support bar are connected to the pair of main ceiling support bar insertion parts. Since it is plugged in, when connecting the ends of the main ceiling support bar, it is possible to insert one end of the main ceiling support bar from the front and back sides by using one straight connecting metal fitting and the main ceiling support bar insertion part. It will be possible. Therefore, the main ceiling support bar is strong against twisting, and the straight line of the bar can be easily obtained.

Further, by preventing the pulling out by locking the mounting locking portion to the main ceiling support bar and fixing by the metal fitting caulking portion, the straight connecting metal fitting is easily connected and becomes difficult to pull out. Furthermore, when fitting the straight connecting fitting to the main ceiling support bar,
The main ceiling support bar insertion portion positions the ends of the main ceiling support bar so that the connection position is easily determined.

According to a second aspect of the present invention, there is provided a system connecting linear fitting for a system ceiling according to the first aspect, wherein the metal fitting caulking portion is bent so that a central portion thereof protrudes toward one side surface. The main ceiling support bar insertion portion was provided on the other side surface. In this way, the metal fitting caulking part is bent so that the center part protrudes on one side surface side, and the main ceiling support bar insertion part is provided on the other side surface, so that the main ceiling support bar insertion part is When inserting the ceiling support bar, the protruding central portion of the metal fitting caulking portion does not become an obstacle and is easy to connect.

According to a third aspect of the present invention, there is provided a system ceiling linear connecting fitting according to the first or second aspect of the present invention, wherein one of the attachment locking portion and the main ceiling support bar is a retaining projection. On the other side, a retaining hole for retaining the retaining protrusion is provided. In this way, one of the mounting locking part and the main ceiling support bar has a retaining projection, and the other has a retaining hole for retaining the retaining protrusion. Even if force is applied to the main ceiling support bar by hooking it on the section, it will not come off.

According to a fourth aspect of the present invention, there is provided a linear connecting fitting for a system ceiling according to the second aspect of the present invention, in which the caulking portion of the system is deformed by a dedicated tool. The tip of the metal fitting caulking portion enters the fitting portion of. In this way, by deforming the metal fitting caulking portion with a dedicated tool, the tip of the metal fitting caulking portion enters the fitting portion under the head of the main ceiling supporting bar, so that the main ceiling supporting bar can be firmly connected.

According to a fifth aspect of the present invention, there is provided a system ceiling linear connecting fitting according to the third aspect, wherein the retaining projection can be removed from the retaining hole with a general-purpose tool. In this way, since the retaining protrusion can be removed from the retaining hole with a general-purpose tool, the main ceiling support bar can be easily removed.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of a linear connecting fitting for a system ceiling according to an embodiment of the present invention, and FIG.
(A) is a front view which shows the state which attached the main ceiling support bar using the linear connection metal fitting of embodiment of this invention, (b) is a top view.

As shown in FIG. 1, a direct connection fitting 10 for a system ceiling has a fitting portion 11 in which a plurality of main ceiling support bars 4 installed in a substantially straight line are provided in a longitudinal direction along a vertical piece 4a. By connecting both sides to the fitting portions 11 of the adjacent main ceiling support bars 4, the ends of the main ceiling support bars 4 are connected to each other. Where the system ceiling is
Sub-ceiling support bars (not shown) arranged in a substantially orthogonal direction are laid between a plurality of main ceiling support bars 4 installed substantially parallel to each other, and these sub-ceiling support bars 4 are arranged between adjacent main ceiling support bars 4. Facility equipment such as ceiling materials and lighting equipment is arranged in a lattice composed of the ceiling support bar 4 and the sub-ceiling support bar.

As shown in FIG. 2, the linear connecting fitting 10 is
A metal fitting caulking portion 2 which is pressed against the fitting portion 11 of the main ceiling support bar 4, an attachment locking portion 1 which is locked to the main ceiling support bar 4 and prevents the fitting portion 11 from coming off, and a main ceiling. It has a pair of main ceiling support bar insertion parts 3 that are bent from the middle part of the side surface on the support bar 4 side toward both ends, and reinforcing ribs 12.

The metal caulking portion 2 has a straight connecting fitting 1 at the base end.
It is a plate piece that is integrated with the lower part of 0 and forms notches 13 on both side edges and is separated from the adjacent part, and is bent in a dogleg shape so that the central part protrudes to one side surface side, and it is attached to the tip. Claw 14
Is formed. In FIG. 1, the metal caulking portion 2 is straightened, and in this state, the tip of the metal caulking portion 2 may be the same as or higher than the upper end of the adjacent portion. Further, one or more metal caulking portions 2 are arranged on both sides of the linear connecting fitting 10, respectively, and two metal caulking portions 2 are arranged on each side in the drawing.

The attachment locking portions 1 are retaining projections cut and raised on the other side surface side, and are formed on both sides of the central portion 10a of the linear connection fitting 10. Each of the attachment locking portions 1 is cut and raised along the fitting direction of the main ceiling support bar 4 so that the central portion opens. Further, a retaining hole portion 15 that engages with the attachment engaging portion 1 is formed in the vertical piece 4 a of the main ceiling support bar 4.

A pair of main ceiling support bar insertion portions 3 are provided on the other side surface of the linear connection fitting 10 so that the vertical pieces 4a of the main ceiling support bars 4 are inserted and connected to each other. In this case, as shown in FIG. 1, the central portion 10a is cut and bent and bent so as to open toward both ends. Further, the tip 3a of the main ceiling support bar insertion portion 3 is bent outward so that the main ceiling support bar 4 can be easily inserted, and a concave portion 3b is provided at one corner on the tip side. A space is provided for the stopper 1.

The reinforcing ribs 12 are provided in the lower portion of the linear connecting fitting 10 along the longitudinal direction and prevent the linear connecting fitting 10 from bending. In this case, it is formed by pressing or the like so as to be convex toward one side surface.

Further, the main ceiling support bar 4 is formed by bending a metal plate so that a vertical head 4a has a cylindrical head 4b at the upper end and a flange 4c at the lower end with a raised edge. It is formed in an inverted T shape and is suspended from an upper slab by a hanger and suspension bolts (not shown). The fitting portion 11 is formed on the flange 4c, and the fitting portion 11a is also formed under the head portion 4b.

Next, the mounting work for connecting the main ceiling support bar 4 using the above-mentioned linear connecting fitting 10 will be described. FIG. 3 is an explanatory diagram for attaching the main ceiling support bar using the linear connecting fitting according to the embodiment of the present invention.

As shown in FIG. 3, one side of the straight connecting fitting 10 is fitted to the fitting portion 11 at the end of the main ceiling support bar 4 so that one side surface is exposed. At this time, while pushing the mounting locking portion 1 with the main ceiling support bar 4, the vertical piece 4a
Is connected to the main ceiling support bar insertion portion 3 and connected. Also,
When fitting the straight connecting fitting 10 to the main ceiling support bar 4, it is necessary to fit it to a predetermined connection position (center portion), but since it is positioned by the main ceiling support bar insertion portion 3, the connection position is easy. Can be fitted up to.

When the insertion of the main ceiling support bar 4 is completed, as shown in FIG. 2, the mounting locking portion 1 enters the retaining hole portion 15 and is elastically restored to the original state. As a result, the attachment locking portion 1 is hooked and locked in the retaining hole 15 and cannot be removed even if a force is applied to the main ceiling support bar 4. After that, as shown in FIGS. 4 and 5, the metal fitting caulking portion 2 is deformed by the dedicated tool 6, so that the metal fitting caulking portion 2 is attached to the fitting portion 11a below the main ceiling support bar head 4b.
The locking claw 14 at the tip of is inserted to fix the main ceiling support bar 4. The dedicated tool 6 includes a metal clamp portion 2 and a clamp portion 20 for crimping and clamping the vertical piece 4a of the main ceiling support bar 4.
The holding portion 20 has a head 4 of the main ceiling support bar 4.
A space 20a is formed in which a portion such as b that does not give a force enters. Next, the other side of the linear connection fitting 10 is similarly fitted to the fitting portion 11 at the end of the main ceiling support bar 4 to fix the main ceiling support bar 4.

FIG. 6 is an explanatory view of the work for removing the main ceiling support bar in the embodiment of the present invention. As shown in FIG. 6, the attachment locking portion 1 can be removed from the retaining hole 15 by a general-purpose tool 5 such as a screwdriver, and the main ceiling support bar 4
Can be easily removed. Thereby, the main ceiling support bar 4 can be used any number of times.

As described above, according to this embodiment, when connecting the end portions of the main ceiling support bar 4 to each other, one straight connecting metal fitting 10 is used and the main ceiling support bar insertion portion 3 is used. The vertical pieces 4a at the ends of the main ceiling support bar 4 can be sandwiched from the front and back sides, the main ceiling support bar 4 is strong against twisting, and the straight line of the bar 4 can be easily put out.

Further, the mounting locking portion 1 is attached to the main ceiling support bar 4
The straight-line connection metal fitting 10 is easy to connect and hard to come off by being prevented from coming off by being locked in the removal preventing hole portion 15 and being fixed by the metal fitting caulking portion 2. Furthermore, the straight connecting fitting 10
When the main ceiling support bar 4 is fitted to the main ceiling support bar 4, the main ceiling support bar insertion portion 3 positions the ends of the main ceiling support bar 4 so that the connection position is easily determined.

Further, since the metal fitting caulking portion 2 is bent so that the central portion projects toward one side surface side and the main ceiling support bar insertion portion 3 is provided on the other side surface, the main ceiling support bar insertion portion is inserted. When inserting the main ceiling support bar 4 into the shank portion 3, the metal fitting caulking portion 2
The protruding central part of the does not become an obstacle and is easy to connect.

The attaching locking portion 1 may be used as a retaining hole, and a protruding protrusion that engages with this may be provided on the main ceiling support bar.

[0029]

According to the main ceiling support bar for the main ceiling support bar according to claim 1 of the present invention, the metal fitting caulking portion press-contacted to the fitting portion of the main ceiling support bar and the main ceiling support bar are engaged. It has a mounting locking part that stops to prevent it from coming off from the fitting part, and a pair of main ceiling support bar insertion parts that are bent toward both ends from the middle part of the side surface on the side of the main ceiling support bar. Since the adjacent end portions of the main ceiling support bar are inserted and connected to the pair of main ceiling support bar insertion portions, one straight connecting metal fitting is used to connect the end portions of the main ceiling support bar to each other. The main ceiling support bar insertion portion makes it possible to sandwich the ends of the main ceiling support bar from the front and back sides. Therefore, the main ceiling support bar is strong against twisting, and the straight line of the bar can be easily obtained.

Further, by preventing the pulling out by locking the mounting locking portion to the main ceiling support bar and fixing by the metal fitting caulking portion, the straight connecting metal fitting is easily connected and becomes difficult to pull out. Furthermore, when fitting the straight connecting fitting to the main ceiling support bar,
The main ceiling support bar insertion portion positions the ends of the main ceiling support bar so that the connection position is easily determined.

In the second aspect of the present invention, the metal fitting caulking portion is bent on one side surface so that the central portion protrudes, and the main ceiling supporting bar inserting portion is provided on the other side surface. When inserting the main ceiling support bar into the insertion portion, the protruding central portion of the metal fitting caulking portion does not become an obstacle and is easy to connect.

According to the third aspect of the present invention, one of the attachment locking portion and the main ceiling support bar is provided with a retaining projection, and the other is provided with a retaining hole for retaining the retaining protrusion. Even if force is applied to the main ceiling support bar, it will not come off by hooking it on the retaining hole.

According to a fourth aspect of the present invention, by deforming the metal fitting caulking portion with a dedicated tool, the metal fitting caulking portion tip enters the fitting portion under the head of the main ceiling supporting bar, so that the main ceiling supporting bar should be firmly connected. You can

In the present invention, since the retaining projection can be removed from the retaining hole with a general-purpose tool, the main ceiling support bar can be easily removed.

[Brief description of drawings]

FIG. 1 is a perspective view of a linear connecting fitting for a system ceiling according to an embodiment of the present invention.

FIG. 2 (a) is a front view showing a state where a main ceiling support bar is attached using the linear connecting fitting of the embodiment of the present invention,
(B) is a plan view.

FIG. 3 (a) is an explanatory view when the main ceiling support bar is attached using the linear connecting fitting according to the embodiment of the present invention.

FIG. 4 is an explanatory diagram of deforming the metal fitting caulking portion with a dedicated tool in the embodiment of the present invention.

FIG. 5 is an enlarged cross-sectional view showing a fixed state of the metal fitting caulking portion deformed by the dedicated tool in FIG.

FIG. 6 is an explanatory diagram of a work for removing the main ceiling support bar according to the embodiment of the present invention.

[Explanation of symbols]

1 Locking part for mounting 2 metal fittings 3 Main ceiling support bar insertion part 4 Main ceiling support bar 5 general-purpose tools 6 dedicated tools 10 Straight connection fitting 11,11a Fitting part 15 retaining holes

Claims (5)

[Claims] 1. A plurality of main ceiling support bars installed substantially linearly to each other have fitting portions provided in the longitudinal direction, and both side portions are fitted to the fitting portions of the adjacent main ceiling support bars. Thus, a linear connecting metal fitting for a system ceiling that connects the end portions of the main ceiling support bar to each other, wherein the metal fitting caulking portion press-contacted to the fitting portion of the main ceiling support bar, and the main ceiling support bar. An attachment locking portion that locks and prevents the fitting ceiling portion from coming off, and a pair of main ceiling support bar insertion portions that are bent toward both ends from an intermediate portion of a side surface of the main ceiling support bar side. A linear connection metal fitting for a system ceiling, comprising: connecting end portions of the main ceiling support bars to the pair of main ceiling support bar insertion portions. 2. The straight line for a system ceiling according to claim 1, wherein the metal fitting caulking portion is bent on one side surface so that a central portion protrudes, and a main ceiling support bar inserting portion is provided on the other side surface. Connection fittings. 3. The system according to claim 1, wherein one of the attachment locking portion and the main ceiling support bar is provided with a retaining projection, and the other is provided with a retaining hole for retaining the retaining projection. A straight fitting for the ceiling. 4. The straight connecting metal fitting for a system ceiling according to claim 2, wherein the fitting caulking portion is deformed by a dedicated tool so that the tip of the metal fitting caulking portion is inserted into the fitting portion under the head of the main ceiling support bar. 5. The straight connecting fitting for a system ceiling according to claim 3, wherein the retaining projection can be removed from the retaining hole with a general-purpose tool.