JPS62338Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a suspended ceiling structure using a so-called T-bar.

[Background technology]

As shown in FIGS. 1 to 3, this type of ceiling has a plurality of main T-bars 3 with an inverted T-shaped cross section arranged in parallel, and an inverted T-shaped cross section between adjacent main T-bars 3. A cross T-bar 7 was constructed, and the periphery of a ceiling plate 9 was placed on the horizontal pieces 2, 6 of both T-bars 3, 7. FIG. 1 shows an example of the connection structure between the main T-bar 3 and the cross T-bar 7. The end of the cross T-bar 7 is attached to a claw piece 10 cut and raised from the vertical piece 1 of the main T-bar 3. The bent piece 11 is engaged with the bent piece 11, and an L-shaped jointer 15 is caulked and fixed to the main T-bar 3 or the cross T-bar 7 and a so-called L-bar 13 having a horizontal piece 14 with a substantially L-shaped cross section on the wall surface. Ta.

However, in the above configuration, the bent piece 11 is attached to the claw piece 10.
It takes a lot of effort to hook the
Since it is a semi-drawing process, it is difficult to achieve precision, and the bending piece 11 tends to fall off or loosen from the claw piece 10, which is a disadvantage.

As a countermeasure against this problem, the connection structure shown in FIGS. 4 to 7 is known from Japanese Utility Model Publication No. 52-39289. In this structure, a key-shaped piece 8 is provided protruding from the edge of the cross T-bar 7, and the key-shaped piece 8 is inserted into the insertion hole 4 provided in the vertical piece 1 of the main T-bar 3 from both sides. Note that 16 and 17 in the figure are bent portions for imparting rigidity to the vertical and horizontal pieces of the main T-bar 3, respectively, and the main T-bar 3 is suspended by a wire 26 passed through a hole 27.

According to the above configuration, it is only necessary to elastically deform each cross T-bar 7 and insert the key-shaped pieces 8 at both ends into the insertion holes 4 of the two main T-bars 3, so that the connection work is easy. On the other hand, since it requires a recess in the center of the upper side of the insertion hole 4 for passing the swollen end of the key-shaped piece 8, the key-shaped piece once engaged There was a risk that the neck of the piece would enter this recess due to external force and the cross T-bar 7 would rise, causing a part of the ceiling to dent.

[Purpose of invention]

The present invention was devised in view of these points, and its purpose is to provide a method of this type that facilitates the work of connecting the cross T-bars and eliminates the risk of the cross T-bars lifting up as described above. Located in providing ceiling structure.

[Disclosure of invention]

Therefore, the present invention has a plurality of main T-bars 3 having an inverted T-shaped cross section arranged in parallel, and the main T-bars 3
In a ceiling in which a cross T-bar 7 with an inverted T-shaped cross section is installed between them, and the periphery of the ceiling board 9 is placed on the horizontal pieces 2, 6 of both T-bars 3, 7, the vertical piece 1 of the main T-bar 3 A substantially rectangular insertion hole 4 is provided in the insertion hole 4, a substantially trapezoidal convex portion 18 with a narrow upper part is provided on the lower side of the insertion hole 4, and a substantially trapezoidal concave portion 38 with a wider upper part is provided on the upper side of the insertion hole 4. A key-shaped piece 8 with a downwardly swollen tip is protruded from the edge of the vertical piece 5, and the vertical width of the neck of the key-shaped piece 8 is made almost equal to the vertical width _A2 of the insertion hole 4, The vertical width of the tip of the key-like piece 8 is made approximately equal to the length B, which is the sum of the vertical widths of the insertion hole 4 and the recess 38, and the recess 38 is used to pass the bulge at the tip of the key-like piece 8. By making the shape approximately trapezoidal and narrowing the entrance, it becomes difficult for the neck of the key-shaped piece 8 to enter the recess 38 after engagement, and by making the convex portion 18 approximately trapezoidal, the oblique side of the concave portion 38 and the convex portion When the key-shaped piece 8 is twisted obliquely and inserted into the insertion hole 4, the key-shaped piece 8 does not get caught on the corner of the recessed part 38, and the key-shaped piece 8 is easily inserted. It has the following.

〔Example〕

8 to 10 show the main parts of the structure of the ceiling according to the present invention, and the structure other than the shape of the insertion hole 4 is completely the same as that shown in FIGS. 3 to 7. As shown in FIG. 9, the key-shaped piece 8 at the tip of the cross T-bar 7 is formed so that its vertical width _A1 is slightly narrower than the vertical width A of the cross T-bar main body. As shown, insert hole 4
It consists of a base part 28 with a length A ₃ which is bent at a different level by a half width ₁ , and an insertion part ₂₉ with a vertical width A ₂ .
The part bulges downward, forming an almost inverted L-shaped key shape. On the other hand, the insertion hole 4 of the main T-bar 3 is
As shown in FIG. 8, the left and right insertion spaces 2 are formed by a substantially trapezoidal convex portion 18 that is narrow at the top and protrudes from the lower side.
A substantially trapezoidal recess 38 with a wide upper part is formed on the upper side of the insertion hole 4, and both sloped sides of the convex part 18 are located approximately on an extension line of the sloped sides 24 on both sides of this recess 38. In addition, the vertical width of the neck of the key-shaped piece 8 is formed to be approximately equal to the vertical width A ₂ of the left and right insertion spaces 23, and the vertical width of the tip of the key-shaped piece 8 is formed to be equal to the vertical width of the insertion space 23 and the recess 38. The length B is approximately equal to the sum of the length B.

Figure 10 shows the state in which the key-shaped pieces 8 of the cross T-bar 7 are inserted into the insertion holes 4 of the main T-bar 3 from both sides and connected. By hanging it, insert the notch 30 formed under the neck into the hole 4.
The key-shaped piece 4 is engaged with the recesses 19 or 20 formed on both sides of the convex part 18, and at that time, a twisting force is applied to the key-shaped piece 4 to tilt it, as shown by the chain line in FIG. As shown in FIG. Therefore, it is easy to insert without getting caught on the corner of the recess 38, and
Since the lower end portions of the triangular portions 21 and 22 on both sides of the recess 38 can be made wider, the upper edge of the key-shaped piece 8 may fall off from the upper step 25 of the insertion hole 4 due to external force after engagement, and the recess 38 This can prevent it from getting inside.

In this embodiment, as shown in FIG. 8, the upper step 25 of the insertion hole 4 is tilted downward toward the center to more reliably prevent the key-shaped piece 8 from falling off.

[Effect of idea]

As described above, the present invention allows the key-shaped piece at the tip of the cross T-bar to be twisted and inserted by slanting the sides of the convex part provided on the lower side of the insertion hole of the main T-bar and the recessed part provided on the upper side. In addition, once engaged, the key-shaped piece is prevented from falling into the recess due to external force, so the advantage is that the connection strength of the T-bar type suspended ceiling can be improved with an extremely simple structure. There is.

[Brief explanation of the drawing]

Figures 1 and 2 are perspective views of the main parts of the conventional example;
The figure is an overall bottom view of the same as above, Figures 4 to 6 are perspective views of main parts showing other conventional examples in the order of assembly, Figure 7 is a schematic top view of main parts of the same as above, and Figures 8 to 10 are Fig. 8 is a front view showing the shape of the insertion hole, Fig. 9 is a side view of the end of the cross T bar, and Fig. 10 is a main T bar and cross T bar.
It is a side view which shows the state which connected with the bar. 1 is the vertical piece, 2 is the horizontal piece, 3 is the main T-bar,
4 is an insertion hole, 5 is a vertical piece, 6 is a horizontal piece, 7 is a cross T-bar, 8 is a key-shaped piece, 9 is a ceiling board, 18 is a convex part, 24 is an inclined side, and 38 is a recessed part.

Claims (1)

[Scope of utility model registration request] A plurality of main T-bars with an inverted T-shaped cross section are arranged in parallel, and a cross T-bar with an inverted T-shaped cross section is installed between the main T-bars, and the peripheral edge of the ceiling board is placed on the horizontal piece of both T-bars. In the ceiling, a substantially rectangular insertion hole is provided in the vertical piece of the main T-bar, a substantially trapezoidal convex portion narrow at the top is provided on the bottom side of the insertion hole, and a substantially trapezoidal concave portion that is wide upwardly is provided on the top side of the insertion hole. A key-shaped piece with a downwardly protruding tip is provided on the edge of the vertical piece of the cross T-bar so that the vertical width of the neck of the key-shaped piece is approximately equal to the vertical width of the insertion hole, and the key-shaped piece is A ceiling structure in which the vertical width of the tip of the piece is approximately equal to the length of the insertion hole and the vertical width of the recess.