JPS6237852Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a ceiling edge connection structure.

[Background technology]

Figures 1 and 2 show conventional examples,
A plurality of main T-bars 1 are arranged in parallel on the ceiling surface,
A cross T-bar 2 was arranged perpendicularly to the main T-bar 1. In these conventional ceiling edge connection structures for system ceilings, as shown in FIG. was. That is, by inserting the connecting piece 3' into the connecting hole 4' and locking the cut-and-raised piece 10 formed approximately in the center of the connecting piece 3' to the wall surface of the main T-bar 1, the cross T-bar 2 The main T-bar 1 was configured so that it would not come off (not come out). As described above, in the past, after the cross T-bar 2 was fitted into the main T-bar 1, the cross T-bar 2 was rarely removed. However, the placement of lighting equipment,
In order to change the size of the ceiling board, etc., it became necessary to remove the cross T-bar 2 and change the pattern. However, in the structure shown in Fig. 1, the cut and raised pieces 1
It seems that it is possible to press 0 and remove the cross T-bar 2 from the main T-bar 1, but after the construction is completed, the distance between the main T-bars 1 is regulated by the positioning of the cross T-bar 2, so it cannot actually be removed. There was a problem.

[Purpose of invention]

The present invention has been proposed in view of the above-mentioned points, and provides a ceiling edge connection structure for the purpose of allowing the cross T-bar to be easily attached and detached from the main T-bar even after construction is completed.

[Disclosure of invention]

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 3 is a perspective view showing the whole structure, in which a main T-bar 1 having an inverted T-shaped cross section is suspended from a building slab by hanging bolts or wires at regular intervals. Reference numeral 2 denotes cross T-bars having a substantially T-shaped cross section, which are arranged in a grid pattern between the main T-bars 1 in a direction perpendicular to the main T-bars 1. 11 is the ceiling board, each T-bar 1,
It is placed between the two. In Figures 4 and 5,
A square connection hole 4 is bored in the vertical piece 1a of the main T-bar 1, and an angular upper groove 5 is formed above the center of the upper edge of the connection hole 4 to communicate with the connection hole 4. There is. Further, angular lower grooves 6, 6 are cut out below both sides of the lower edge of the connection hole 4, so as to communicate with the connection hole 4, respectively. Connecting pieces 3 are integrally provided at the ends of the cross T-bar 2 in the longitudinal direction, and the connecting pieces 3 of the cross T-bars 2A and 2B are inserted and engaged into the connecting holes 4 from both sides of the main T-bar 1. That's what I do. A claw piece 7 is integrally formed at the upper end of the connecting piece 3 of the cross T-bar 2 and projects upward. Reference numeral 8 denotes a locking groove with an open lower edge that locks onto the upper edge of the lower groove 6 of the connection hole 4, and is formed on the lower side of the connection piece 3;
It is cut closer to the base of the connecting piece 3 than the claw piece 7.
Further, a tapered portion 9 is formed on the upper side of the connecting piece 3 that is recessed from the claw piece 7. In other words, the cross T of the claw piece 7
The tapered portion 9 is smaller than the length in the longitudinal direction of the bar 2.
In addition to increasing the length, as shown in FIG. The upper edge and the base of the tapered portion 9 are formed to have the same dimension b, that is, to be located on the same circumference around the point c of the upper edge of the locking groove 8. The end of the horizontal piece 2b of the cross T-bar 2 is bent upward one step to form a mounting piece 2c, and this mounting piece 2c is placed on the upper end of the horizontal piece 1b of the main T-bar 1. I have to. Incidentally, the connecting piece 3 is inserted into the connecting hole 4 from both sides, and when inserted or removed, the upper groove 5 is used, and when engaged, the lower groove 6 and the locking groove 8 are used. Therefore, the dimension f between the upper edge of the upper groove 5 and the lower edge of the lower groove 6 is made larger than the dimension d between the lower side of the tip of the connecting piece 3 and the upper side of the claw piece 7. In addition, the lower edge of the lower groove 6 and the lower groove 6
The dimension e between the upper edge of the upper connection hole 4 and the connection piece 3 is
The dimension d between the lower side of the tip and the upper side of the claw piece 7 is made smaller. Furthermore, the dimension e between the lower edge of the lower groove 6 and the upper edge of the connecting hole 4 above the lower groove 6 is the same as the upper edge of the locking groove 8 of the connecting piece 3 and the upper side of the connecting piece 3 above the locking groove 8 ( It is larger than the dimension g with respect to the tapered portion 9).

Next, the attachment/detachment operation will be explained. First, as shown in FIG. 6, while twisting the cross T-bar 2 slightly clockwise, insert the
and the lower groove 6, the connecting piece 3 of the cross T-bar 2
When the claw piece 7 of the connecting piece 3 passes through the upper groove 5 and the locking groove 8 is located in the lower groove 6, the cross T
When the bar 2 is twisted counterclockwise to return and dropped downward, the locking groove 8 and the lower groove 6 will engage with each other. That is, the upper edge of the locking groove 8 and the lower edge of the lower groove 6 are in contact with each other, and the claw piece 7
The end face on the rear side of The bar 1 will be engaged and connected. Also, the connection on the opposite side of the cross T-bar 2 is twisted and attached to the main T-bar 1 in the same manner as above.
In this way, the cross T-bar 2 is attached, the main T-bar 1 and the cross T-bar 2 are assembled in a lattice shape, and the ceiling board 11 is dropped into this lattice to form a ceiling. Moreover, the removal of the cross T-bar 2 from the main T-bar 1 before the completion of construction can be performed in the order shown in FIGS. 6c, b, and a, contrary to the above.

Next, when the cross T-bar 2 is to be removed from the main T-bar 1 after the construction is completed, the procedure is as shown in FIG. 7. First, twist the cross T-bar 2A clockwise and lift it up a little, put the claw piece 7 of the connection piece 3 into the upper groove 5, and then attach the main T-bar 1 to the cross T-bar.
When tilted toward the bar 2B side, the main T-bar 1 can be tilted to the base of the tapered part 9 of the cross T-bar 2B, since the cross T-bar 2B has a tapered part 9 of dimension a=b. , the claw piece 7 of the cross T bar 2A comes out from the upper groove 5, and the cross T bar 2A comes out from the upper groove 5.
By lifting the bar 2A upward, the cross T-bar 2A can be removed from the main T-bar 1. Further, even when installing the cross T-bar 2 after completion of construction, the above-mentioned operation is reversed.

[Effect of idea]

As described above, the present invention forms an upper groove communicating with the connection hole at approximately the center of the upper edge of the connection hole of the main T-bar, and forms lower grooves communicating with the connection hole on both sides of the lower edge of the connection hole. A claw piece that is inserted into the upper groove is integrally provided upward from the upper edge of the tip of the connecting piece of the cross T-bar, and the upper edge of the lower groove of the connection hole is provided at the lower part of the base side of the claw piece of the connecting piece. A locking groove in the lower edge opening to be locked is cut, and the dimension between the upper groove and the lower groove of the connection hole is formed to be larger than the vertical dimension of the tip of the connection piece including the claw piece, and The dimension between the lower groove and the upper edge of the connection hole above the lower groove is formed small,
Since the dimensions of the upper edge of the lower groove and the connection hole above the lower groove are formed larger than the dimensions of the upper edge of the locking groove of the connection piece and the upper side of the connection piece above the locking groove, the main T-bar For normal attachment and detachment between the cross T-bar and the cross T-bar, insert the connecting piece of the cross T-bar between the upper and lower grooves of the connection hole of the main T-bar while twisting the cross T-bar slightly. When the pawl passes through the upper groove and the locking groove is located in the lower groove, twist the cross T-bar in the opposite direction to return it and drop it downward, so that the locking groove and the lower groove engage with each other. In this way, when connecting the cross T-bar to the main T-bar, the connecting claw can be connected using the upper and lower grooves of the connecting hole,
In addition, when engaging, the upper edge of the locking groove and the lower edge of the lower groove can be engaged with each other, and the cross T-bar from the main T-bar must be connected before the construction is completed. Removal can be carried out in the reverse order to the above, and therefore the main T-bar and the cross T-bar can be normally attached and detached very easily. Furthermore, a tapered part is formed from the lower part of the claw piece on the upper side of the connecting piece to the base of the connecting piece, and the dimension between the tip of this tapered part and the upper edge of the locking groove and the engagement between the base of the tapered part and the engagement groove are determined. Since the dimensions between the top edge of the stop groove and the top edge of the stop groove are formed to be approximately the same, even after construction is completed, the connection piece of one cross T-bar must be twisted to match the top groove of the connection hole. Tilt the main T-bar so that it is along the tapered part of the connection piece of the other cross T-bar, and when the claw piece of the connection piece of one cross T-bar comes out of the connection hole due to the inclination of the main T-bar, It has the advantage that by lifting the cross T-bar, it can be removed from the main T-bar.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the connection of the conventional example, Fig. 2 is a view showing the ceiling configuration of the same as above, Fig. 3 is a perspective view of the ceiling of the embodiment of the present invention, and Fig. 4 shows the connection configuration of the same as above. A perspective view, FIGS. 5a and 5b are side views of the cross T-bar same as above, and FIGS. 6a, b, and c are action explanatory views of the same as above,
FIGS. 7a and 7b are explanatory views of the same operation. 1 is the main T-bar, 2 is the cross T-bar, 3 is the connection piece, 4 is the connection hole, 5 is the upper groove, 6 is the lower groove, 7
8 indicates a locking groove, and 9 indicates a tapered portion.

Claims (1)

[Scope of utility model registration request] A connecting piece that forms a main T-bar arranged on a ceiling surface and a cross T-bar arranged orthogonally to the main T-bar from both sides, and projects in the longitudinal direction of the cross T-bar from the end of the cross T-bar. are integrally formed, a connection hole is bored in the main T-bar through which the connection piece connects, and an upper groove communicating with the connection hole is formed approximately at the center of the upper edge of the connection hole of the main T-bar, and A lower groove communicating with the connecting hole is formed on both sides of the lower edge of the connecting hole, and a claw piece is integrally provided upward from the upper edge of the tip of the connecting piece of the cross T-bar to be inserted into the upper groove. A locking groove at the lower edge opening that locks with the upper edge of the lower groove of the connection hole is cut in the lower part of the base side of the claw piece, and the connection hole is determined by the vertical dimension of the tip of the connection piece including the claw piece. The dimension between the upper groove and the lower groove is formed to be large, and the dimension between the lower groove and the upper edge of the connection hole above the lower groove is formed to be small,
The dimensions of the upper edge of the lower groove and the connecting hole above the lower groove are formed larger than the dimensions of the upper edge of the locking groove of the connecting piece and the upper side of the connecting piece above the locking groove, and the claw piece on the upper side of the connecting piece is formed. A tapered part is formed from the lower part of the connecting piece to the base of the connecting piece, and the dimension between the tip of this tapered part and the upper edge of the locking groove, and the dimension between the base of the tapered part and the upper edge of the locking groove. Ceiling edge connection structure formed with approximately the same dimensions.