JP3659602B2 - Floor panel opening closing plate - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a closing plate for closing an opening of a floor panel used on a free access floor.
[0002]
[Prior art]
In the free access floor, the closing plate that closes the opening formed in the recessed shape in contact with the edge of the floor panel was conventionally made of hard synthetic resin, but the synthetic resin closing plate is deformed in the event of a fire There has been a demand for a non-combustible material made of a non-combustible material that does not cause deformation in the event of a fire. Metal block plates that are non-combustible materials have been proposed in Japanese Utility Model Publication Nos. 6-7153 and 6-18968. In these closing plates, the back surface of the metal closing plate is placed in a surface contact state on the placement surface provided at the opening edge of the metal floor panel, and the placement surface of the floor panel In order to prevent the generation of noise due to the direct contact between the metal and the closing plate, means for sticking a buffering strip on the back surface of the closing plate or applying flocking is taken.
[0003]
[Problems to be solved by the invention]
As a result of examining the generation of noise in the closing plate, special measures were taken even with the conventional surface contact type closing plate as long as the mounting surface of the floor panel and the back surface of the closing plate are in complete surface contact. At least noise is not generated at all, but in actuality, it is difficult to finish the floor panel mounting surface or back surface of the floor panel to a perfect flat surface when manufacturing the floor panel or closing plate. In addition, incomplete surface contact between the floor panel mounting surface and the back of the closing plate because foreign matter may enter between the floor panel mounting surface and the closing plate during or after installation of the closing plate. As a result, a part of the closing plate is lifted by the load applied from above, and this lifted part again comes into contact with the mounting surface to generate noise. Items that require dressing or flocking Found was. Also, in the conventional surface contact type closing plate, the load applied to the closing plate after installation is directly transmitted to the entire surface of the floor panel mounting surface, and the load is also applied to the free end side of the floor panel mounting surface. As a result, the free end of the mounting surface is gradually bent downward, and the peripheral edge of the closing plate is gradually bent upward. Due to the occurrence of such bending deformation, the surface contact state between the floor panel mounting surface and the closing plate is not maintained, which not only causes the above-described noise generation, but also causes the closing plate to move away. It will be.
[0004]
In view of the above, the problem to be solved by the present invention is that it is possible to prevent generation of noise, unexpected detachment movement, and the like by being stably placed on the placement surface of the floor panel. An object of the present invention is to provide a floor panel opening closing plate that is strong and has high rigidity.
At the same time, another problem to be solved by the present invention is to provide a floor panel opening closing plate that has been subjected to vibration damping itself.
The other problem to be solved by the present invention is to provide a plate closing floor panel opening having a means capable of easily communicating state only when necessary through line holes provided in the closing plate .
Furthermore, another problem to be solved by the present invention is to provide a closing plate for a floor panel opening having a means for obtaining a composite closing plate that is disposed across opposing openings of adjacent floor panels. is there.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problems, a floor panel opening closing plate according to the present invention is positioned lower than the floor panel upper surface at the mouth edge of the opening formed in a recessed shape in contact with the floor panel edge. A floor panel opening blocker plate mounted on a mounting protrusion projecting in a step shape, and having a top plate portion having a shape corresponding to the upper surface shape of the opening portion, and the opening opening end during installation A hanging plate part that is suspended from one edge of the top plate part located on the side and is arranged continuously with the floor panel edge part, and the top plate part located on the mounting projection edge installation side of the opening during installation the lower edge suspended from the other edge possess a drooping edge is placed on the placing置用flange at the base of the the placing置用flange, a flexible material layer on said top plate portion on A basic structure in which thin metal plates having substantially the same shape as the top plate are laminated.
In addition , in order to make the through hole provided in the closing plate communicate only when necessary, the top plate portion has a through groove formed in a recessed shape in contact with the hanging edge portion, and the laminated metal The thin plate is formed with a cut for separation having a partial connection point at a position along the outer periphery of the through-slot hole, or the laminated thin metal plate at the position of the through-slot hole. It is characterized by having means for forming a cut for dividing and folding the metal thin plate.
Further , as a closing plate disposed across the opposing openings of adjacent floor panels, a composite closing plate is obtained by connecting the hanging plate portions of two closing plates alone. .
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The embodiments of the present invention will be clarified by examples of the invention described with reference to the accompanying drawings.
FIG. 1 is a plan view showing a laying state of a floor panel in a free access floor, and reference numeral 1 in the drawing denotes a single floor panel on which a closing plate according to the present invention is installed. A large number of floor panels 1 are laid vertically and horizontally on a floor slab to form a floor surface. The floor panel 1 is provided with an opening 2 in contact with the edge at one edge or two opposite edges of the panel, and a signal cable or a trunk cable is drawn from the floor to the floor surface, or an outlet device is installed. Have been able to. If the floor panel is laid so that both openings 2 and 2 of the adjacent floor panel exist at the opposite edges of the adjacent floor panels 1 and 1, an opening having a double width is formed. Thus, a thick bundle of cables can be pulled out and a large outlet device can be installed. These openings 2 are opened only at necessary portions such as cable connection and installation of an outlet device, and are obstructed by the closing plate 10 according to the present invention at unnecessary portions. However, it is possible to install a through hole in the closing plate 10 itself. In that case, a thin cable or the like can be pulled out from the through hole in the closing plate 10 even at the place where the closing plate 10 is installed. .
[0007]
FIG. 2 is a perspective view showing a state in which the closing plate 10 according to the present invention is placed on the floor panel 1, and the floor panel 1 whose outer shell is constituted by a steel plate has an edge 3 of the floor panel 1. The opening 2 is formed in a recessed shape in contact therewith. The opening 2 forms a substantially rectangular plane surrounded by an open end along the edge 3 of the floor panel 1 and a mouth edge 5 formed in a concave shape from the upper surface 4 of the floor panel 1. A mounting projection edge 6 protrudes in a step shape at a position lower than the upper surface 4 of the floor panel. The upper surface of the mounting protrusion 6 constitutes a continuous plane so that the closing plate 10 can be mounted.
[0008]
As for the closing board 10 concerning this invention, the main-body part is manufactured by pressing a steel plate. The closing plate 10 has, as its basic configuration, a top plate portion 11 that forms a substantially rectangular plane that is the upper surface shape of the opening portion 2, and one of the top plate portion 11 that is positioned on the open end side of the opening portion 2 when the closing plate 10 is installed. A hanging plate portion 12 that is suspended from the edge and arranged continuously with the edge portion 3 of the floor panel 1, and a top plate portion 11 that is located on the mounting projection edge 6 side of the opening 2 when the closing plate 10 is installed. The bottom edge 14 has a suspended edge 13 that is placed on the mounting protrusion 6 at the base 7 of the mounting protrusion 6 while hanging from the other three edges. All the drooping edge portions 13 and the drooping plate portion 12 are continuously provided in the peripheral direction, and the drooping plate portion 12 is placed on the mounting projection edge 6 on the edge of the floor panel 1 when the closing plate 10 is installed. , 6 are formed with notches 15 and 15 on both sides thereof so as not to abut against. As apparent from FIGS. 3, 4, 7, and the like, the top plate portion 11 is provided with a protrusion 16 for reinforcing the closing plate 10 and enhancing rigidity as necessary.
[0009]
As shown in FIG. 3 and FIG. 4, when the closing plate 10 is placed on the opening 2 of the floor panel 1 so that the drooping plate portion 12 is continuous with the edge 3 of the floor panel 1. The closing plate 10 is supported in a state in which the lower end edge 14 of the hanging edge portion 13 is in contact with the base portion 7 of the mounting projection edge 6 in the opening 2 of the floor panel 1. In this way, the lower end edge 14 of the hanging edge portion 13 of the closing plate 10 is placed in a contact state in a line contact state with respect to the placement edge 6 of the floor panel 1 having a flat shape. Compared with the conventional surface contact type products, the contact area is very small, and the contact surface due to the occurrence of unevenness of the contact surface during manufacturing and the entry of foreign matter into the contact surface after installation occurs in the surface contact type. The occurrence of a non-land state during the period becomes small, and the generation of noise on the contact surface due to the non-land surface can be prevented. Further, the lower end edge 14 of the hanging edge portion 13 in the closing plate 10 is placed on the base portion 7 of the placement projection edge 6 in the floor panel 1, so that it is on the free end side of the placement projection edge 6. No bending moment is generated, and the maximum bending moment at the base portion 7 is small compared to the conventional surface contact type product. However, the position of the contact portion does not change due to the deformation, so that the generation of noise can be prevented and the inadvertent movement and detachment of the closing plate can be prevented. Further, the closing plate 10 is formed with a tall hanging plate portion 12 at the edge of the opening end side of the opening 2 and a hanging edge portion 13 is formed at the other edge portion. It has rigidity.
[0010]
As shown in FIGS. 5 and 7, the top plate portion 11 of the closing plate 10 has a through-groove 17 formed in a recessed shape in contact with the hanging edge portion 13, and further shown in FIGS. As shown, a thin metal plate 20 is laminated on the top plate portion 11 of the closing plate 10 so as to cover the through-slot 17 through a flexible material layer 19 such as a double-sided adhesive tape. The thin metal plate 20 is substantially the same shape as the top plate portion 11 and has a slightly smaller flat surface, and the flexible material layer 19 has the same shape as the thin metal plate 20 or an area smaller than that. When the closing plate 10 vibrates due to vibration caused by walking or vibration from a placed device, the flexible material layer 19 expands and contracts due to bending vibration of the top plate portion 11 in the closing plate 10. Since the expansion and contraction of the upper surface is constrained by the thin metal plate 20, the bending vibration is converted into a shear deformation of the flexible material layer 19, and energy is absorbed by the shear deformation. Therefore, a vibration damping effect is imparted to the closing plate 10, Generation of noise in the closing plate 10 itself can be prevented. As the metal sheet 20 is more effective Young's modulus is relatively high rather stretch is small metal plate, usually steel sheets are used. In addition to the double-sided adhesive tape, a flexible synthetic resin sheet or film, paper, cloth, etc. can be used for the flexible material layer 19, and lamination is also performed by heat welding or by adhesion with an adhesive. Can be. As described above, since the flexible material layer 19 uses the shear deformation, the vibration damping action hardly depends on the thickness of the flexible material layer 19, and even if it is thin, a sufficient damping effect can be exhibited. . When the flexible material layer 19 is made thin, it is possible to prevent the walking feeling from being lowered due to the sinking caused by the thick flexible material layer, and it can be manufactured at low cost.
[0011]
The metal thin plate 20 is provided with a means for making the through-slot 17 a communicating hole only when necessary. As an example, FIG. 5 shows a means of a type in which the cut piece 21 of the thin metal plate 20 is cut when the communication hole is formed. The metal thin plate 20 is formed with a cut line 23 having a partial connection point 22 at a position along the outer periphery of the through-slot 17. When the communication hole is formed, the connection point 22 is cut and the cut piece 21 is cut. If the part is removed together with the flexible material layer 19 of the part, the communication hole is easily opened. When the communication hole is not opened, the periphery of the separation portion 21 exists at a position along the outside of the periphery of the passage groove hole 17, so that the load applied to the separation portion 21 is directly applied to the top plate portion 11 via the flexible material layer 19. In order to be transmitted, the separation part 21 does not sink. FIGS. 8 and 9 show a means for bending the bent portion 24 of the thin metal plate 20 when the communication hole is formed. The metal thin plate 20 is formed with a cut 25 for split-bending the metal thin plate 20 at the position of the through-slot 17 in the through-slot 17 at the position of the through-slot 17. The communication hole can be opened by a simple operation of dividing and bending the bent portion 24 along the edge of the through-slot 17.
[0012]
As described above, if the floor panel is laid so that the openings 2 and 2 of both the adjacent floor panels 1 and 1 exist at the opposite edges of the adjacent floor panels 1 and 1, the floor panel is doubled. An opening can be formed. In order to close the opening having the double width, it is possible to prepare two closing plates 10 and install the closing plates 10 in the respective openings 2, but during use after installation, The drooping plate portions 12 of the two closing plates 10 and 10 come into contact with each other to cause noise generation, and the open end side of the opening portion 2 in each floor panel 1 faces each other. Since the restriction on the lateral movement of the closing plate 10 is weakened, the closing and moving of the closing plate 10 is likely to occur. The example of the closing plate shown in FIG. 10 is a composite closing plate for closing an opening having such a double width, as shown in FIGS. 2, 3, 6 and the like. A through hole 18 is perforated at a predetermined position in the hanging plate portion 12 of the closing plate 10, and between the through holes 18 and 18 in a state where the hanging plate portions 12 and 12 of the two closing plates 10 and 10 are in contact with each other. And the two closing plates 10 and 10 are integrally connected. Such a composite closing plate can be easily installed in the adjacent openings 2 and 2, and when installed, prevents the generation of noise due to mutual contact between the closing plates, and is adjacent. Since the hanging edge portion 13 formed on the peripheral edge of the composite closing plate is placed on the placing projection edge 6 formed so as to be surrounded by the floor panels 1 and 1, a stable placement state is obtained. Also, the moving plate does not move away. In addition, although the composite type | mold closing board shown in figure is connected beforehand by the hook 26, it is also possible to join on the spot by bolt joining.
[0013]
【The invention's effect】
The present invention has the following effects.
A. Compared with the conventional surface contact type product, the bottom edge of the hanging edge of the closing plate is placed in a line contact state against the mounting edge of the flat floor panel. As a result, the contact area is very small, and there is little occurrence of unevenness between the contact surfaces due to foreign matter entering the contact surface after installation or the occurrence of foreign matters entering the contact surface after installation. Thus, it is possible to prevent the generation of noise on the contact surface due to unevenness.
B. Since the lower edge of the hanging edge of the closing plate is placed at the base of the mounting projection on the floor panel, no bending moment is generated on the mounting projection free end side. Also, since the maximum bending moment at the base is small compared to conventional products of the surface contact type, even when used for many years, the mounting projection edge and closing plate will be deformed and the position of the contact part will be There is no change, and noise can be prevented, and inadvertent movement and detachment of the closing plate can be prevented.
[0014]
C. The closing plate has a drooping plate portion formed at the edge portion on the open end side of the opening portion and a drooping edge portion formed at the other edge portion, and therefore has a strong and high rigidity as a whole.
D. Since the metal thin plate through the flexible material on the top plate portion on are stacked, when the closing plate by the vibration of the equipment vibrated and placed with walking vibrates, in the top plate portion closing plate is flexible material layer The flexible material layer is constrained by the metal thin plate on its upper surface, so the bending vibration is converted into the shear deformation of the flexible material layer, and energy is absorbed by this shear deformation. A damping effect is imparted to the closing plate, and noise generation of the closing plate itself can be prevented.
E. In a mode in which a through-slot is formed in the top plate part, and a cut for separation is formed at a position along the outer periphery of the through-slot hole in the thin metal plate, when the through-line is necessary, the top of the through-slot The metal thin plate can be removed by using a cut line for disconnection, and a communication hole that can be easily connected can be established. Since it is provided at a position along the outside, the metal thin plate portion to be separated does not sink into the through-slot hole.
[0015]
F. In a mode in which a through-slot is formed in the top plate part, and a cut is formed in the thin metal plate at the position of the through-slot to divide and fold the thin metal plate, the bent portion is necessary when the through-line is required. It is possible to open a communication hole that can be easily bent through split bending along the edge of the through-line groove hole.
G. In a mode in which the hanging plate portions of the two closing plates are connected to each other to form a composite closing plate, when the floor panel is laid so that both openings exist at opposite edges of adjacent floor panels In addition, compared to the case of installing two block plates alone, it is possible to install a block plate that closes both openings by a single operation, and to prevent the generation of noise due to contact between the block plates alone. Since the suspended edge formed around the composite closing plate is mounted on the mounting protrusion formed so as to be surrounded by the adjacent floor panel, a stable mounting state can be obtained and closed. There is no movement of the board.
[Brief description of the drawings]
FIG. 1 is a plan view showing a laying state of a floor panel on which a closing plate according to the present invention is installed.
FIG. 2 is a perspective view showing a situation where a closing plate according to the present invention is placed on a floor panel.
FIG. 3 is a cross-sectional view of a closing plate placed on the floor panel.
4 is a cross-sectional view at a position perpendicular to FIG. 3 similar to FIG. 3;
FIG. 5 is a top view showing an example of a closing plate.
FIG. 6 is a side view of a similar closing plate.
FIG. 7 is a rear view of a similar closing plate.
FIG. 8 is a top view showing another example of the closing plate.
9 is a cross-sectional view taken along the line AA of FIG. 8 in a state where a bent portion is bent.
FIG. 10 is a cross-sectional view of a composite closing plate.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Floor panel 2 Opening part 3 Edge part 4 Upper surface 5 Mouth edge 6 Mounting protrusion 7 Base part 10 Blocking board 11 Top board part 12 Hanging board part 13 Hanging edge part 14 Lower edge 17 Passing groove 19 Flexible material layer 20 Thin metal plate 22 Connection point 23 Cut line 25 Cut line

Claims (4)

For a floor panel opening to be mounted on a mounting protrusion protruding in a step shape at a lower position than the top surface of the floor panel at the opening edge formed in a recessed shape in contact with the edge of the floor panel A top plate having a shape corresponding to the shape of the upper surface of the opening, and a bottom plate that is suspended from one edge of the top plate located on the open end side of the opening at the time of installation. A hanging plate portion that is disposed, and a lower end edge that is suspended from the other edge of the top plate portion that is located on the mounting projection edge installation side of the opening at the time of installation at the base portion of the mounting projection edge possess a drooping edge is placed on the mounting flange, the said top plate portion on, together with the sheet metal of said top plate portion and substantially the same shape through the flexible material layer is laminated, said top plate In the portion, a through-slot hole is formed in a recessed shape in contact with the drooping edge, and the laminated metal thin plate is formed on the outer periphery of the through-slot hole. Partial floor panel opening for closing plate, characterized in that the cut for disconnecting is formed with a connection point in the Hare position. The floor panel opening closing plate according to claim 1 , wherein the hanging plate portions of the two closing plates are connected to each other to form a composite closing plate. For a floor panel opening to be mounted on a mounting protrusion protruding in a step shape at a lower position than the top surface of the floor panel at the opening edge formed in a recessed shape in contact with the edge of the floor panel A top plate having a shape corresponding to the shape of the upper surface of the opening, and a bottom plate that is suspended from one edge of the top plate located on the open end side of the opening at the time of installation. A hanging plate portion that is disposed, and a lower end edge that is suspended from the other edge of the top plate portion that is located on the mounting projection edge installation side of the opening at the time of installation at the base portion of the mounting projection edge A metal plate having the same shape as the top plate portion is laminated on the top plate portion with a flexible material layer interposed between the top plate portion and the top plate portion. In the portion, a through-slot is formed in a recessed shape in contact with the hanging edge, and the laminated metal thin plate has the metal slot at the location of the through-slot Closing plate for a floor panel opening, wherein a cut for bending split folding a plate is formed. The floor panel opening closing plate according to claim 3, wherein the hanging plate portions of the two closing plates are connected to each other to form a composite closing plate.

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