JP2669307B2 - Floor panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor panel laid to form a so-called double floor so as to form a space for laying a communication cable, a power line and the like on a concrete floor or the like. is there.

[0002]

2. Description of the Related Art Recently, a large number of floor panels are laid on building floors via supporting legs so that wirings can be inserted into a space formed between the floor panels and the building floors. Various double floors have been developed. In such a double floor, which is required to be fireproof, a sheet metal floor panel is usually used.

As a floor panel of this kind, however, a cavity is formed between a front plate and a back plate made of sheet metal, and the top of the bulging column protruding from the back plate in the front plate direction is exposed. It is known that the plate is fixed to the lower surface of the plate via a caulking joint.

[0004] In this type of floor panel, the surface of the floor panel is liable to vibrate, so that there is a problem that every time an external force is applied by walking or the like, metallic noise accompanied by reverberation is easily generated. Conventionally, in order to suppress such problems,
A rubber sheet is attached to the lower surface of the front plate while avoiding the periphery of the crimp joint.

[0005]

However, after attaching a rubber sheet to the lower surface of the front plate, the operation of polymerizing the back plate and crimping the top of the bulging column to the front plate using a press or the like is not enough. Since it is difficult to carry out continuously, there is a problem that the manufacturing line becomes complicated. In addition, it is difficult to attach a rubber sheet to the front plate of each floor panel under the same conditions, so that there is a large variation in noise suppression effect depending on whether the attachment is sufficient or not. There are also defects. Further, since the lower surface of the rubber sheet is released in this case, the rubber sheet may peel off from the front plate when repeated vibration is applied, and there is a problem that it is difficult to maintain the vibration damping function for a long period of time.

An object of the present invention is to solve such a problem.

[0007]

In order to achieve the above object, the present invention takes the following measures. That is, the floor panel according to the present invention has a cavity formed between a front plate and a back plate made of sheet metal, and the top of the bulging column protruding from the back plate in the front plate direction is the lower surface of the front plate. In a floor panel which is fastened via a staking joint, a vibration suppressing member is arranged in the vicinity of the periphery of the staking joint, and the vibration suppressing member is sandwiched between the front plate and the bulging column. Characterize.

The vibration suppressing member of the present invention is preferably a sealing material such as urethane or silicon which can be built up by a coating operation.

In order to increase the strength of the whole body and effectively dispose the vibration suppressing member, the bulging column has an inverted cup shape, and the space between the upper surface of the bulging column and the lower surface of the front plate is increased. It is preferable that a vibration suppressing member is interposed in a wedge-shaped space formed in side view.

[0010]

According to the present invention, metallic noise accompanied by reverberation can be obtained only by partially disposing a vibration suppressing member in the vicinity of the periphery of a caulking joint that joins a front plate and a back plate. Can be effectively suppressed. That is, with such a structure, when the front plate vibrates, the vibration is directly transmitted to the vibration suppressing member sandwiched between the front plate and the bulging column of the back plate. Then, the vibration energy is converted into heat energy by the internal friction of the vibration suppressing member and consumed. Therefore, the vibration of the front plate is quickly attenuated. It has been found that when the vibration suppressing member is disposed between the top plate and the bulging column and the caulking joint is provided in the vicinity of the joint, an unexpectedly large damping effect can be obtained. There is a slight shift based on the difference in form between the behavior due to the vibration of the protruding column, and this shift causes expansion and contraction and shearing action in the internal tissue of the vibration suppression member, and the vibration energy of the top plate suppresses this vibration It is considered that this is because the heat energy is effectively converted inside the member.

Further, if the vibration suppressing member is sandwiched between the front plate and the bulging column, the vibration suppressing member will not be separated from the front plate even if a repeated vibration is applied, so that the vibration suppressing member can be kept for a long time. Period performance can be maintained.

Further, if a sealing material such as urethane or silicon, which can be built up by an application operation, is used as the vibration suppressing member, the vibration suppressing member is automatically applied during the pressing process for joining the front plate and the back plate. It becomes easy to intervene the process, and the manufacturing process can be simplified.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

A floor panel P shown in FIGS. 1 to 3 has a substantially square shape in a plan view, and a cavity C is formed between a front plate 1 and a back plate 2 made of sheet metal. The top 31 of the bulging column 3 protruding from 2 toward the front plate 1 is fixed to the lower surface 1 a of the front plate 1 via a caulking joint 4. And four corners 1
1 is notched in a quarter circle for the floor panel support device, and is formed to be concentric with the notch and slightly depressed from the upper surface of the front plate 1 in a fan shape in a plan view to form a step portion. When four sheets are brought together, a circular opening is formed by a notch in the center of the stepped part that is depressed into a circle. Further, a rectangular notch 12 is formed at the center of the two opposing sides, and a space for attaching an outlet or the like is provided between the rectangular panel 12 and the adjacent floor panel P. Furthermore, at the top portion 31 of the bulging column 3, the caulking joint 4
Is provided with a vibration suppression member 5 in the vicinity of. The vibration suppressing member 5 is preferably made of a sealing material such as urethane or silicon that can be built up by a coating operation, and is disposed so as to be sandwiched between the front plate 1 and the bulging column 3. In this embodiment, urethane is used.

The front plate 1 is made of a metal plate which is larger than the dimension of the floor panel P by the amount of the folded back portion of the peripheral edge.
A cylindrical cut-and-raised portion 41 serving as a caulking joint 4 is provided at a position corresponding to the bulging column 3. Also, each corner 1
1 is bent so that it is shallowly bent in the same direction as the cut-and-raised portion 41, and is further bent at the tip end so as to form a fan-shaped step portion and a notch. A notch 12 is formed by cutting out the central portion of the rectangular shape.

The back plate 2 has a peripheral portion bent at a predetermined size so as to form a cavity C between the back plate 2 and the front plate 1, and has a plurality of hemispherical shapes and different curvatures in the same direction as the bending direction. A plurality of substantially hemispherical bulging columns 3 formed by combining curved surfaces are formed. The bulging column 3 is formed so that its depth is substantially the same as the thickness of the floor panel P, and a through hole 32 having substantially the same outer diameter as the outer diameter of the cut-and-raised part 41 of the front plate 1 is formed in the top 31 thereof. It is set up.

In such a configuration, the floor panel P is
As shown in FIGS. 4 to 7, in the line of the press process for superposing the front plate 1 and the back plate 2, the vibration suppressing member 5 is attached to the front plate 1.
And the back plate 2 is superimposed on the front plate 1, and the top 31 of the swelling pillar 3 and the cut-and-raised portion 41 are caulked.
And the back plate 2 are integrally manufactured.

That is, the front plate 1 is conveyed with its cut-and-raised portion 41 facing upward (indicated by a white arrow in FIG. 4).
Then, at a predetermined position during transportation, the vibration suppressing member 5 is applied to both side portions of the cut-and-raised portion 41 in conformity with the transportation direction. This application may be performed with the applicator for the vibration suppressing member 5 installed above the transport path so that the application can be performed simultaneously on a straight line in the same direction as the transport direction of the front plate 1. Next, the back plate 2 is superposed on the front plate 1 to which the vibration suppressing member 5 is applied, and the peripheral edge of the front plate 1 excluding the corners 11 is bent until it comes into close contact with the back plate 2, and the cut-and-raised portion of the front plate 1 is formed. 41 is bent so as to be in close contact with the back surface of the bulging column 3, and the bulging column 3 is fixed to the lower surface 1 a of the front plate 1 by caulking. At this time, when the back plate 2 is superimposed on the front plate 1, the vibration suppressing member 5 is pushed and expanded in the cut-and-raised portion 41, in other words, in the direction of the top 31 of the bulging column 3 and in the opposite direction. As a result, the vibration suppressing member 5
2 and the lower surface 1a of the front plate 1 are filled with a wedge-shaped space in a side view.

As described above, in the pressing step, the vibration suppressing member 5 is applied to a predetermined position, and then the front plate 1 and the back plate 2 are overlapped with each other, so that the vibration suppressing member 5 can be securely attached to the lower surface 1a of the front plate 1. It can be made to intervene in a wedge shape in a side view between and the top 31 of the bulging column 3. Moreover, by arranging the vibration suppressing member 5 only in the vicinity of the top 31 where the top 31 of the bulging column 3 is fixed to the front plate 1, a vibration-proof material such as a rubber sheet can be attached to a wide area. No, front plate 1 and back plate 2
It is possible to effectively absorb the vibration generated in and to suppress the generation of noise. Since the vibration suppressing member 5 is mounted by being sandwiched between the front plate 1 and the back plate 2 in this way, it does not fall off between the front plate 1 and the back plate 2, and therefore, for a long period of time. Continue contact between the front plate 1 and the back plate 2,
The desired performance can be maintained without changing.
As in this embodiment, if a sealing material such as urethane, which can be built up by an application operation, is used as the vibration suppressing member 5, the vibration during the pressing process for joining the front plate 1 and the back plate 2 may occur. The automatic application process of the suppressing member 5 can be easily interposed, and most of the manufacturing can be performed in the pressing process, so that the manufacturing process can be simplified as a whole.

The present invention is not limited to the embodiment described above. For example, the vibration suppressing member 5 is applied in an annular shape around the cut-and-raised portion 41 of the front plate 1 to form the bulging column 3
It may be arranged so as to surround the top 31 of the. As described above, if the vibration suppressing member 5 is disposed in a ring shape,
Further, it is possible to effectively suppress the generation of metallic noise.

In addition, the configuration of each section is not limited to the illustrated example, and various modifications can be made without departing from the spirit of the present invention.

[0022]

As described above in detail, according to the present invention, since the vibration suppressing member is held in the vicinity of the periphery of the caulking joint by the front plate and the bulging column of the back plate, the vibration suppressing member can be removed from the front plate. The vibration suppressing member can always be provided in the same state without peeling, and uniform vibration suppressing performance can be maintained without change over a long period of time.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a side view of the embodiment.

FIG. 3 is a sectional view taken along line AA in FIG. 1 of the same embodiment.

FIG. 4 is a perspective view showing a front plate in a state where the vibration suppressing member of the embodiment is applied.

FIG. 5 is a process explanatory view showing a state after application of a vibration suppressing member when manufacturing the same embodiment.

FIG. 6 is a process explanatory view showing a state in which a front plate and a back plate are polymerized when manufacturing the same example.

FIG. 7 is a cross-sectional view showing an enlarged main part of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Front plate 1a ... Lower surface 2 ... Back plate 3 ... Swelling column 4 ... Caulking joint 5 ... Vibration suppressing member

Claims (3)

(57) [Claims] 1. A cavity is formed between a front plate and a back plate made of sheet metal, and a top of a bulging column protruding from the back plate in the direction of the front plate is caulked to a lower surface of the front plate via a swage joint. In the floor panel, which is fastened and fixed, a vibration suppressing member is arranged in the vicinity of the periphery of the caulking joint, and the vibration suppressing member is sandwiched between a front plate and a bulging column. . 2. The floor panel according to claim 1, wherein the vibration suppressing member is a sealing material such as urethane or silicon which can be built up by a coating operation. 3. The bulging column has an inverted cup shape, and a vibration suppressing member is interposed in a wedge-shaped space in a side view formed between the upper surface of the bulging column and the lower surface of the front plate. The floor panel according to claim 1 or 2, wherein: