JPH1088724A - Sheet-like spring, composite sheet-like spring and spring panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To excellently absorb vibration by molding a recessed/projecting board by alternately juxtaposing plural almost trapezoidal projecting strips composed of a thin plate having rigidity and elasticity such as a steel plate and plural recessed strips having the same depth, and arranging a continuous waveform recess/projection on a bottom surface or the like of a groove strip. SOLUTION: A sheet-like spring 1 which is composed of a flat upper surface 21 and a side surface 22 composed of an inclined face and has projecting strips 2 whose cross-sectional shape is trapezoidal, is molded, and a bottom surface 23 is continuously added to a lower end part of the side surface 22, and recessed strips 3 are formed. A small projecting part 4 of a small waveform is added over the total length to the center of this bottom surface 23, and the sheet-like spring 1 is continuously formed by alternately repeating the projecting strips 2 and the recessed strips 3. Next, a shock absorbing sheet-like material such as a rubber sheet, a soft synthetic resin sheet, felt and a bristle sheet is stuck to an upper surface of this sheet-like spring 1, and a composite sheet-like panel is formed. Therefore, elastic performance is improved, and a noise of a low sound area can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a planar spring, a composite planar spring, and a spring panel using the same, which are used for sound insulation and vibration isolation of upper and lower floors in a building.

[0002]

2. Description of the Related Art In buildings, problems of noise and vibration have recently been highlighted. Although high frequency noise can be relatively easily solved by the sound absorbing material, it is difficult to block low frequency noise. Increasing the thickness of concrete is one of the reliable solutions for low-pitched noise, but the weight of the structure increases, and there is also a relationship between the ground strength of the foundation and the overall cost. In many cases, adoption is difficult.

[0003] A flat plate made of a vibration-proof rubber or an elastic synthetic resin, a disk-shaped body provided with a large number of projections, a disk-shaped body formed in a repetitive waveform or an uneven shape are known. However, since it is formed of a flexible material, a thick product is required to wait for a large area, and there is only a local effect due to lack of rigidity. There is a disadvantage that the cost is increased due to the necessity of stacking.

[0004]

SUMMARY OF THE INVENTION According to the present invention, in order to solve such difficulties, the entire surface has rigidity,
And it has good vibration absorption, small thickness, light weight,
It is intended to provide a low cost planar spring.

[0005]

For this purpose, according to the present invention, a plurality of substantially trapezoidal ridges made of a thin plate having rigidity and elasticity, such as a steel plate, and a plurality of ridges having the same depth are alternately provided. The uneven plate which is arranged in parallel is used.

[0006] At least one of the upper surface of the ridge, the side surface of the ridge (which is also the side surface of the ridge), and the bottom surface of the groove is provided with wavy irregularities continuous in the longitudinal direction. When the side surface is vertical, the wavy unevenness is essential. In addition to a single concavo-convex plate, or between planar springs, it can also be a composite planar spring by overlapping with another buffer sheet-like material,
It is also possible to use a spring panel bonded to a rigid plate.

[0007]

When an external force in the vertical direction is applied to the planar spring of the present invention, the ridge or the concave is deformed to absorb the force.
If the ridges and valleys are flat, the surface is hardly deformed when an external force is applied, and the vibration is transmitted as it is. In the present invention, at least one of the top surface of the ridge, the side surface of the ridge, and the bottom surface of the ridge is provided with corrugations. Especially when a force is applied from the lateral direction, the wavy irregularities are not stretched like a flat surface, and easily expand and contract in the amplitude direction. Therefore, energy can be absorbed by deformation.

Since it is formed of a rigid material such as a steel plate, it is possible to receive the force in a wide area rather than a local area, compared to a material formed of rubber or a soft resin. Since a greater force is required to deform the spring, energy loss is large, and noise in the low frequency range is easily absorbed. Further, since the spring is formed of an elastic steel plate or the like, the spring returns to its original state when the external force within the elastic limit is removed. Can be restored. The use of a spring steel plate or a stainless steel plate having a large elasticity value increases the elastic limit value, which is convenient.

Since a steel plate can be formed by pressing or forming, a large number of leaf springs can be formed at the same time, so that production is easier than producing individual springs and assembling them on a surface. It is easy to store and transport because it has a shape that can be superimposed, and because it has a high strength per unit weight, it is lightweight and easy to construct.

[0010]

Embodiment 1 FIG. 1 shows a planar spring 1 using a rectangular galvanized steel plate having a thickness of 1 mm as an original plate.
Forming a trapezoidal ridge 2 having a flat upper surface 21 having a width of 5 cm and a side surface 22 having an inclined surface having a vertical height of 1 cm and being continuous with both ends of the upper surface at 135 ° and a vertical height of 1 cm. I do.

A bottom surface 23 having a width of 2 cm is attached to the lower end of the side surface 22, and the concave stripe 3 is formed together with the side surfaces 22 on both sides. In the center of the bottom surface 23, a small wave-shaped small convex portion 4 having a width of 1 cm and a height of 5 mm is provided over the entire length. The ridges 2 and the valleys 3 are alternately and repeatedly formed to form a planar spring 1 having a width of about 50 cm.

Although the shape of the ridge is not limited to the above embodiment, it is usually used because a surface plate is stuck on the upper surface, overlapped, or laid with a floor finishing material. It is convenient to form a flat part of constant width. Although not specified, generally, the heights of the ridges are the same. As shown in FIG. 2, a small concave portion 41 having a plurality of waveforms may be provided on the upper surface 21 of the ridge 2.

The angle of the side surface is generally formed diagonally because the purpose is to release the force from above in the downward direction. The inclination angle is not particularly specified. It can be appropriately selected depending on the expected load, the quality and thickness of the material, and the like. For example, as shown in FIG.
And the entire bottom surface 23 may have a gentle arc shape with no clear division. As shown in FIG. 4, when the side surface 22 is formed vertically, a small convex portion 4 or a small concave portion 41 that protrudes in the lateral direction is indispensable in order to release a force from above. As shown in the figure, it is effective to overlap a plurality of small convex portions and small concave portions.

The type and thickness of the original plate used for the planar spring of the present invention and the shape and number of the ridges and concaves to be formed mainly determine the performance of the completed planar spring. The desired performance can be selected. The steel plate used is generally a zinc-plated general steel plate, but stainless steel may be used, or spring performance may be improved by quenching after forming using spring steel.

The purpose of the corrugations provided on the ridges and valleys is, as described above, to absorb the force mainly by the effect of the spring when a vertical force is applied to the surface. In particular, when the side surface is vertical, since the vertical force is transmitted as it is, it is necessary to absorb the force by the wavy irregularities. If such an object can be achieved, the cross-sectional shapes of the ridges and valleys are not specified in the examples. However, when compressed, the wavy irregularities may change higher, so it is preferable that the height of the wavy irregularities is formed lower than that of the uneven stripes. In addition, the individual waveforms of the ridges and undulations need not be the same, and the intervals between the waveforms may be different.

At predetermined intervals of 3 cm or 10 cm in the longitudinal direction, cuts in a direction perpendicular to the longitudinal direction may be provided on the upper and / or lower portions of the uneven strip of the planar spring. Good. By providing the cuts, a certain degree of flexibility is given to the entire planar spring, and there is an advantage that it is easy to be familiar when laying. As shown in FIG. 5, deep cuts 5 from the upper part and deep cuts 5 from the lower part are alternately provided in the planar spring 1.

In the case of using the planar spring 1 of the present invention in which the narrow concave stripes 3 are formed, as shown in FIG. 6, the flat spring 1 is laid directly on a floor base 6 and a floor such as a carpet is directly placed thereon. The covering material 7 can be spread and used.

[0018]

Embodiment 2 As shown in FIG.
The composite sheet spring 1A can be formed by laminating a buffer sheet 8 such as a rubber sheet, a soft synthetic resin sheet, a felt, or a bristle sheet. The bonding may be performed on either the upper or lower surface of the planar spring or on both upper and lower surfaces. By combining with a buffer sheet-like material, different types of sounds and vibrations can be blocked, and a metallic planar spring can be constructed in a familiar manner, which is convenient.

The composite planar springs may be formed by overlapping and joining the planar springs in advance. When the sheet springs are overlapped with each other, it is convenient to install and join the sheet springs so that the directions of the concave stripes are orthogonal to each other, since the directionality of the compound sheet springs can be eliminated. Further, a buffer sheet may be attached to the upper and lower surfaces or any one of them. Further, the thickness of a sheet steel or the like constituting the planar spring can be determined according to the required degree of the spring performance.

[0020]

Third Embodiment As shown in FIG. 8, a rigid floor base plate 9 such as a wooden flooring or a control panel is placed on a planar spring 1.
To form the spring panel 1B. The concave strip 3 of the planar spring 1 is filled with a rod-like body or a tube 81 made of an elastic body such as rubber to flatten the surface and increase a buffering effect against various kinds of vibrations. You can also. Similar measures can be taken for the space under the ridge 2 and a great effect can be expected. Such a planar spring is lightweight and easy to construct.

In the planar spring of the present invention, it is desirable to provide a predetermined number of through holes of a predetermined shape at predetermined positions. Although not specified, the planar spring of the present invention is formed by pressing or forming a flat plate, so that a through hole can be provided in a flat plate state before the forming process, which is convenient. . Providing a through hole is convenient when compounding planar springs, fixing planar springs, connecting with other objects, etc., and is also convenient for providing air permeability. .

[0022]

Since the present invention is configured as described above, the following effects can be expected. 1 A sheet spring can be formed from one steel plate. Since the two-plane spring can be formed at once by a simple process such as pressing or forming, it can be mass-produced at low cost. (3) Since the planar spring is composed of a large number of springs, it has excellent elasticity, and is particularly effective in preventing noise in the low frequency range. 4 By combining with a cushioning material and a surface plate having different performances, a material with high sound insulation performance can be easily obtained. 5 In addition to floors, it can be applied to various types of sound insulation, vibration prevention, etc., such as installation bases for precision equipment and cushions for furniture. 6 Because there is a through hole, it is easy to fix and connect.
This is convenient because air permeability can be maintained.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of a planar spring.

FIG. 2 is a partial front view showing an example of a ridge.

FIG. 3 is a partial front view showing another example of the ridge.

FIG. 4 is a partial front view showing another example of the ridge.

FIG. 5 is a partial side view showing an example of a planar spring.

FIG. 6 is a partial front view showing an example of a construction state of a planar spring.

FIG. 7 is a partial front view showing an example of a composite planar spring.

FIG. 8 is a partial front view showing an example of a spring panel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Planar spring 1A Composite planar spring 1B Spring panel 2 Convex ridge 3 Concave ridge 4 Small convex part 5 Cut 6 Floor base 7 Floor covering material 8 Buffer sheet material 9 Floor base plate

Claims (9)

[Claims] 1. A plurality of substantially trapezoidal ridges and a plurality of substantially grooved ridges formed from a rigid and elastic thin plate,
In the uneven disk which is alternately arranged in parallel, the top surface of the ridge, the side surface of the ridge (also the side surface of the dent), the bottom of the groove,
A planar spring characterized in that at least one surface is provided with wavy irregularities continuous in the longitudinal direction. 2. The planar spring according to claim 1, wherein the thin plate is a steel plate, a spring steel plate, or a stainless steel plate. 3. The planar spring according to claim 1, wherein a predetermined shape and a predetermined number of through holes are provided at predetermined positions. 4. The planar spring according to claim 1, wherein the undulating irregularities have one or a plurality of undulating shapes. 5. The planar shape according to claim 1, wherein the ridges and / or the grooves are provided with transverse cuts at predetermined intervals. Spring. 6. The planar spring according to claim 1, wherein the ridges and / or the grooves are filled with an elastic body. 7. The method of claim 1, and / or 6.
A composite planar spring characterized by stacking a plurality of the planar springs described. 8. A buffer sheet-like material is attached to the surface and / or the back surface of the planar spring or the composite planar spring according to claim 1.
Composite planar spring. 9. The surface and / or surface of the planar spring according to claim 1 or 8 or the composite planar spring.
A spring panel, characterized in that a rigid plate is bonded to the back surface directly or via a buffer sheet.