JP3526005B2 - Cushion material - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cushioning material for a block laid on a floor. 2. Description of the Related Art For example, many blocks having legs are laid on the floor of a room where office machines such as electronic computers are installed, and a power cable or the like is provided in a gap between the block and the floor. It has been widely practiced to arrange signal cables and the like, cover these cables with blocks, and prevent the cables from obstructing indoors (for example,
(See Utility Model Registration No. 2575105). At this time, in order to prevent the laid blocks from rattling, cushion members made of an elastic material are attached to the bottom surfaces of the legs of each block, and each block is placed on the floor via the cushion material. I have. A conventional cushioning material has a tubular portion fitted into a mounting hole formed on the bottom surface of a leg of a block, and a bottom wall portion integrally connected to the tubular portion. When laid on the surface,
The bottom wall is installed on the floor. In order to prevent the block from rattling even if there is some unevenness on the floor surface, a bulging portion is formed on the bottom wall surface on the side in contact with the floor surface, which bulges out on the opposite side to the cylindrical portion. I have. As described above, by attaching a cushion material to the bottom surface of each leg of each block, it is possible to prevent the block from rattling when a person walks on the block laid on the floor. By the way, the above-mentioned cushioning material is such that its cylindrical portion is fitted into a mounting hole formed in the bottom surface of the leg portion of the block and is attached to the block. In the state
When the block is transported to a construction site, the cushioning material may come off from the mounting hole of the block during the transportation or when the block is laid on the floor. When the cushion material comes off like this,
The work of fitting the cushion material into the mounting hole of the block must be performed, and the work efficiency is reduced. SUMMARY OF THE INVENTION The present invention has been made based on the above-described novel recognition, and an object of the present invention is to provide a method for transporting a block or laying the block. An object of the present invention is to provide a cushion material for a block which can prevent the block from being detached from the mounting hole of the block. [0007] In order to achieve the above object, the present invention provides a cushion material made of an elastic material for a block laid on a floor surface, the cushion material being provided on a bottom surface of a leg of the block. A tubular portion directly fitted into the formed mounting hole, and a bottom wall portion integrally connected to the tubular portion and installed on the floor surface when the block is laid on the floor surface And having
A bulge is formed on a surface of the bottom wall that is in contact with the floor surface, the bulge protruding in a direction opposite to the cylindrical part, and a recess is formed at a substantially central part of the bulge, and the cylindrical part is formed. The present invention proposes a cushion material having irregularities formed on the outer peripheral surface thereof. An embodiment of the present invention will be described below with reference to the drawings, and the above-mentioned conventional disadvantages will be more specifically clarified with reference to the drawings. FIG. 1 shows a large number of blocks 2 laid next to each other on a floor 1 in a room, and FIG. 2 is a partial cross-sectional view showing one of the blocks 2 in an enlarged manner. is there. FIG. 3 is a plan view of the block 2, and FIG. 4 is a partially enlarged sectional view of FIG. Block 2 shown here
Is made of concrete, has a substantially square planar shape, and the length L of one side is, for example, about 500 mm;
Its thickness t is about 40 to 50 mm. Each block 2
Has four legs 3 at its four corners, and each block has four legs 3. Mounting holes 4 are respectively formed in the bottom surfaces of the legs, and cushion materials 5 made of an elastic material are mounted in the mounting holes 4. In this manner, each block 2 is placed on the floor 1 via the cushion material 5, and the tile carpet 9 is usually laid on the upper surface of the block 2 as shown in FIG. The pedestrian walks on the tile carpet 9. By arranging a plurality of blocks 2 on the floor 1 as shown in FIG. 1, a gap G is formed between the blocks 2 and the floor 1, so that a power cable (not shown) is provided here. And signal cables can be routed, and these cables can be covered. As shown in FIGS. 4 and 5, a cushion member 5 made of an elastic material for the block 2 laid on the floor directly fits into a mounting hole 4 formed in the bottom surface of the leg of the block 2. It has a tubular portion 6 to be attached and a bottom wall portion 7 integrally connected to the tubular portion 6, and when the block 2 is laid on the floor surface 1, the bottom wall portion 7 Installed in Also the bottom wall 7
A bulging portion 8 bulging to the side opposite to the cylindrical portion 6 is formed on the surface in contact with the floor surface 1. Such cushion material 5
Is manufactured by injection molding from an elastic material such as an ethylene / vinyl acetate copolymer, an ethylene resin, a propylene resin, an olefin-based thermoplastic elastomer, or a styrene-based thermoplastic elastomer. The above-described cushioning material 5 enhances the cushioning property of a person walking on the block 2 and prevents the block 2 from rattling. In particular, since the bulging portion 8 formed on the bottom wall portion 7 comes into contact with the floor surface 1, the backlash of the block 2 can be effectively increased, and the bulging portion 8 also functions as a non-slip. Further, in the cushion material 5 of the present embodiment,
As shown in FIGS. 4 and 5, a small concave portion 10 is formed substantially at the center of the bulging portion 8. By forming such a concave portion 10 in the bulging portion 8, even when the block 2 is made of concrete and the weight is large, when a person walks on the block 2, abnormal noise is generated from the cushion material 5. The problems that occur can be prevented. This is the same when a relatively heavy block other than concrete is used. When the cushion member 5 having no concave portion 10 is used by attaching it to the heavy concrete block 2, when the weight of the pedestrian is added on the heavy block 2, the elastic material is used. A large compressive load acts on the cushion member 5 formed, and the bulging portion 8 is elastically largely compressed and deformed. Then, when the foot of the pedestrian is separated from the block 2, the compressive load acting on the cushion material 5 sharply decreases, so that the bulging portion 8 elastically returns to its original shape. At this time, if the concave portion 10 is not formed in the bulging portion 8, a relatively loud noise called “Pokon” is generated from the portion of the bulging portion 8. For this reason, when a person walks on a large number of blocks 2, a clicking sound and a clicking sound are continuously generated, which inevitably causes a pedestrian to feel uncomfortable. On the other hand, as shown in FIG. 4, when the concave portion 10 is formed in the bulging portion 8, the weight of the pedestrian acts on the cushion material 5 via the block 2, and the bulging portion 8 is compressed. Deformation, the effect of the weight is released again, and the bulge 8
Does not generate a loud noise as seen in the cushion material without the concave portion 10. In this way, it is possible to prevent a problem of giving a pedestrian a discomfort. The above-described structure of the cushion member 5 is not different from the conventional cushion member. In such a conventional cushion material, when an external force acts on the cushion material after the cylindrical portion is fitted into the mounting hole of the block and attached to the block, the cushion member may be detached from the mounting hole. For example, when the block is transported to the construction site after the cushion material is attached to the block, the cushion material comes off from the mounting hole during the transportation. Therefore, in the cushion material 5 of this embodiment, as shown in FIG.
1 is formed. For this reason, once this cylindrical portion 6 is fitted into the mounting hole 4 of the block 2, the unevenness 1
1 and the inner peripheral surface of the mounting hole 4 are firmly frictionally engaged with each other, and even when the block 2 is transported in this state, the cylindrical portion 6 of the cushion material 5 does not come off from the mounting hole 4. FIG. 6 shows an example of a conventional cushioning material 5 in which the above-mentioned unevenness 11 is not formed. The outer peripheral surface of the cylindrical portion 6 is formed smoothly. Therefore, the frictional engagement force between the outer peripheral surface of the cylindrical portion 6 and the inner peripheral surface of the mounting hole 4 is weak, and when a large external force is applied to the cushion material 5 during transportation of the block 2, the cylindrical portion 6 is mounted. There was a risk of falling out of the hole 4. According to the cushioning material 5 shown in FIG. 4, the above-mentioned conventional disadvantages can be avoided. Also unevenness 1
1 is formed with a spiral screw groove and a screw thread, and a spiral screw is formed on the inner peripheral surface of the mounting hole 4, the cushion material 5 is formed.
Can be screwed into the mounting hole 4 while the cushion member 5 is being turned. Thereby, the cushioning material 5 can be easily blocked
The cushion member 5 can be prevented from detaching from the mounting hole 4 once it is mounted. When it becomes necessary to remove the cushion material 5 from the block 2, the cushion material 5 can be easily removed from the block 2 by rotating the cushion material 5. Next, for reference, an example of the dimensions of each part of the cushion material 5 is shown. As shown in FIG. 4, when the inner diameter of the cylindrical portion 6 is D ₁ , its outer diameter is D ₂ , and the diameter of the bottom wall portion 7 is D ₃ , D ₁ = 14 mm, D ₂ = 20 mm, and D ₃ = 26 mm.
The thickness of the bottom wall portion 7 excluding the bulging portion 8 is T, the protruding height of the bulging portion 8 is H ₁ , the height of the tubular portion 6 is H ₂ , the radius of curvature of the bulging portion 8 is R, and the diameter of the concave portion 10. Is d ₁ and the depth of the recess 10 is d ₂ , T = 4 mm, H ₁ = 2 mm, H ₂ = 6 mm, R = 10 m
Set m, d ₁ = 2.5 mm and d ₂ = 1.5 mm. According to the present invention, it is possible to prevent the tubular portion of the cushion material from being detached from the mounting hole of the block by a very simple structure of forming irregularities on the outer peripheral surface of the tubular portion. can do.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing a state where many blocks are laid on a floor surface. FIG. 2 is an enlarged partial cross-sectional view of the block shown in FIG. FIG. 3 is a plan view of the block shown in FIG. 2; FIG. 4 is a sectional view showing a part of FIG. 2 in a further enlarged manner. 5 is a plan view of the cushion member shown in FIG. 4 when viewed from above. FIG. 6 is a sectional view similar to FIG. 4, showing an example of a conventional cushion material. [Description of Signs] 1 Floor surface 2 Block 3 Leg portion 4 Mounting hole 5 Cushion material 6 Cylindrical portion 7 Bottom wall portion 8 Swelling portion 11 Roughness

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Claims (1)

(1) A cushion material made of an elastic material for a block laid on a floor surface, which directly fits into a mounting hole formed in a bottom surface of a leg of the block. A cylindrical portion to be attached, and a bottom wall portion integrally connected to the cylindrical portion and installed on the floor surface when the block is laid on the floor surface. A bulge is formed on the surface in contact with the floor surface of the bulge, the bulge protruding to the opposite side to the cylindrical part, and a recess is formed in a substantially central part of the bulge, and the outer peripheral surface of the cylindrical part is Cushion material with unevenness.