JPH0522626Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an assembly structure for a metal flush door installed at the entrance/exit of a building.

[Prior art and problems to be solved by the invention] In general, in this type of metal flush door, abutting pieces are bent at the edges of two large-area front and back face plates, and the abutting pieces are connected together. There are door bodies that are assembled by abutting each other and fixing the parts integrally.
Conventionally, the opposing surfaces of the butt pieces have been fixed together with an epoxy adhesive, double-sided adhesive tape, or the like. However, in this case, there is a drawback that the adhesive part is poor in fire resistance and may peel off in the event of a fire.
As in Publication No. 9685, an engaging pawl and an engaging hole are respectively formed on the opposing surfaces of the abutting pieces of the front and back plates, and with these opposing surfaces facing each other, the double-sided plates are shifted and the engaging pawl is inserted into the engaging hole. It has been proposed that they are integrally fixed by fitting and locking them, and this has been effective in terms of fire resistance and other aspects. However, with this product, the abutting pieces formed on the metal front and back plates are directly butted against each other, so when there is vibration during opening and closing, an unpleasant metallic sound (chattering sound) is produced.
A new problem has arisen in that it may occur, and it is desired to solve this problem.

[Means for Solving the Problems] In view of the above-mentioned circumstances, the present invention has been devised for the purpose of providing a metal flush door assembly structure that can eliminate these drawbacks. The door front and back panels are formed by folding and bending abutting pieces on the edges of a flat metal plate, and when assembling these door front and back panels by abutting each other and fixing the opposing abutting pieces integrally, While the facing surfaces of both of the abutting pieces are adhered to each other with adhesive tape, a locking tool is slidably disposed on the opposite surface of one of the butting pieces, and a protrusion is engaged with the locking tool. The claws are slid and locked in a penetrating manner into the engagement holes drilled in the two pasted butting pieces so as to be aligned with each other, and the matching pieces are further held between the locking tool and the locking nails. It is characterized by being fixed.

With this configuration, the present invention makes it possible to provide a metal flush door that eliminates the generation of metallic noise due to vibrations during opening and closing, and has excellent fire resistance.

[Example] Next, an example of the present invention will be described based on the drawings. In the drawings, 1 and 2 are front and back plates of a metal flush door, and the front plate 1 is a rectangular face plate with a predetermined size, and the edge portion thereof is bent to form an edge surface 1a and a butting piece 1b with the back plate 2. However, the abutting piece 1b is formed by being folded back from the edge surface 1a toward the surface plate 1 side and positioned closer to the surface plate 1 than the edge of the edge surface 1a.
An appropriate number of adhesive tapes 6 are pasted on the facing surface of this butting piece 1b that is butted against the back plate 2, and an appropriate number of engagement holes 1c are cut out in the front plate side abutting piece 1b. has been done. Further, a backbone 3 having a hat-shaped cross section is adhesively fixed to the surface plate 1 with double-sided adhesive tape 6.
Adhesive tape 6 is adhered to an appropriate number of locations on the facing surface 3a that is butted against the back plate 2.

The back plate 2 is formed by bending the edge of a rectangular face plate of a predetermined size, and folding back and bending the abutting piece 2a opposite to the abutting piece 1b on the front plate side. An engagement hole 2b is formed opposite to the engagement hole 1c formed in the surface plate side abutment piece 1b. In addition, an aggregate 4 is adhesively fixed to the back plate 2 by a similar bonding means so as to face the backbone 3 of the front plate 1.

The front and back plates 1 and 2 thus formed are abutted against each other and adhered with adhesive tape 6 to form a box-shaped door body D.
However, the abutting pieces 1b and 2a of the front and back plates 1 and 2 that are butted and fixed are further provided with engagement holes 1c and 2b that are formed in both the abutting pieces 1b and 2a and open in a penetrating shape. By locking the locking tool 5 with the locking member 5, the locking member 5 is clamped and fixed. That is, the locking tool 5 is formed of a band-shaped metal plate, and engaging claws 5a are formed by cutting and raising the front and back plates 1 and 2 at locations corresponding to the engaging holes 1c and 2b. Then, when the locking tool 5 is installed in the gap between the back plate 2 and the abutting piece 2a, that is, the surface of the abutting piece 2a opposite to the front plate abutting piece 1b, so as to be slidable in the vertical direction, the engagement occurs. Claw 5a
is slid and pushed through the engaging holes 2b and 1c drilled in a penetrating manner, and is fitted and locked into the surface plate side engaging hole 1c like a hook. As a result, the locking tool 5 and the engaging claw 5a clamp and fix the abutting pieces 1b and 2a of the front and back plates 1 and 2. The upper and lower ends of the locking tool 5 are fixed by spot welding to the upper and lower ends of the back plate 2, if necessary.

In the embodiment of the present invention configured as described above, in order to assemble the door body D, after the front and back plates 1 and 2 are butt-fixed to each other with double-sided adhesive tape 6, the locking tool 5 is attached to the back side butt piece. 2a
Forcibly slide and push it to the opposite side of the
It is sufficient to fit and lock the engaging claws 5a into the engaging holes 2b and 1c in a penetrating manner, and by doing so, the door body D can be fixed by pasting with the adhesive tape 6 and clamping with the locking tool 5. It will be assembled by. As a result, the door body D has the disadvantage of inferior fire resistance of a door body D that is simply pasted with adhesive tape 6, and the metal-to-metal contact that a door body D that is simply fixed using cut-out claws provided on the front and back plates has. This makes it possible to reliably prevent the generation of unpleasant metallic sounds (chattering sounds) caused by metal parts, and to form a high-quality metal flush door.

Moreover, in the case of the present invention, the front and back plates 1 and 2 are pasted together using adhesive tape 6, and then the locking tool 5 is pushed in to clamp and fix them, so not only is workability excellent, but cost reduction can also be expected. It is something.

[Operations and Effects] In summary, the present invention is constructed as described above, and the front and back plates are pasted with adhesive tape, and a locking tool is pushed into the butt piece of the front and back plates. The engaging pawl is slid and locked in the drilled engaging hole in a penetrating manner, and the abutting pieces are clamped and fixed between the locking tool and the engaging pawl. In this way, the double-sided board can be fixed integrally by pasting with adhesive tape and clamping and fixing with the fasteners, so it can be made highly resistant to fires, etc., and it can also be made with adhesive tape. The buffering effect prevents unpleasant metallic sounds from occurring, resulting in high quality products. Moreover, this product can be assembled by fixing it with adhesive tape and then attaching the locking tool to fix it. Therefore, the workability of the assembly work is good and it can contribute to cost reduction.

[Brief explanation of the drawing]

The drawings show an embodiment of the assembly structure of a metal flush door according to the present invention, in which FIG. 1 is a perspective view showing a metal flush door, and FIG.
Figures A, B, and C are a plan view, side view, and front view showing how the locking tool is used, respectively. Figure 3 is an exploded perspective view showing how the locking tool is used, and Figure 4 is an exploded view showing the conventional example. FIG. In the figure, 1 and 2 are front and back plates, 1b and 2a are mating surfaces, 1c and 2b are engagement holes, 5 is a locking tool, 5a is an engagement claw, and 6 is an adhesive tape.

Claims (1)

[Scope of utility model registration request] The door front and back panels are formed by folding and bending abutting pieces on the edges of a flat metal plate, and when assembling these door front and back panels by abutting each other and fixing the opposing abutting pieces integrally, While the facing surfaces of both of the abutting pieces are adhered to each other with adhesive tape, a locking tool is slidably disposed on the opposite surface of one of the butting pieces, and a protrusion is engaged with the locking tool. sliding and locking the claws in a penetrating manner into engagement holes formed in the two pasted butt pieces so as to align them with each other;
An assembly structure for a metal flush door, characterized in that butt pieces are further clamped and fixed by a locking tool and a locking claw.