JPH09273240A - Sheet spring, combined sheet spring, spring panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To insulate noise particularly of a low-pitched sound zone by forming a sheet spring that a large number of springs are provided on a steel sheet, by superimposing it on each other to have a combined sheet spring, or by sticking it on a surface board to have a spring panel so as to utilize spring properties. SOLUTION: A base board 1 is made of a galvanized steel sheet of a prescribed thickness. A blanked hole 10 is made on the original board 1. Next, a spring projection 20 in the spherical state is pressed around the blanked hole 10 to have a sheet spring 2. Moreover, a continuous space is made with a planked part, and an elastic resin is filled in the space to have a buffer face 4. Then, even if a large force is applied from above, this can be dispersed. By this, by combining springs with different performances, various noise prevention is enabled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat spring, a composite flat spring, and a flat spring used for sound insulation of upper and lower floors in construction.
A spring panel using the same.

[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.
Although a thick elastic mat or the like is effective, it is difficult to apply it in terms of cost.

[0003]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a material which absorbs vibration well, has a high sound insulation performance in the low frequency range, is light in weight, and is low in cost. It is an object.

[0004]

To this end, according to the present invention, one sheet of steel is used as a raw material, and a sheet-like spring is formed on the steel sheet. It is also possible to stack these planar springs to form a composite planar spring, or to form a spring panel bonded to a surface plate. This invention makes use of the spring characteristics of the planar spring,
In particular, it aims to solve noise in the low range.

[0005]

[Function] The spring made of a steel plate absorbs vibrations that are the source of noise in the low frequency range and finishes the operation, so that the effect is great. Further, since a single steel plate is used as a material and a large number of leaf springs can be simultaneously formed on the steel plate, the production cost is low and the construction is simple.
Further, it is possible to select which range of noise to remove, depending on how to select the steel plate, the height of the leaf spring, and the like. Since a continuous space is formed inside the planar spring, it is also possible to enhance the performance by appropriately filling the space with a cushioning object, a sound absorbing object, a sound insulating object, a heat insulating object, or the like.

[0006]

Example 1 An example is shown in which a leaf spring is formed by using a galvanized general steel sheet having a thickness of 1 mm as an original plate. FIG.
As shown in FIG. 3, a blank 1 is provided with a punching hole 10 having a diameter of 1 cm. A spherical spring-like projection 2 having a diameter of 3 cm and a height of 5 mm with the punched hole as the center.
0 is formed by pressing. It does not prescribe the order of forming the punched holes and forming the protrusions.

[0007]

[Embodiment 2] As shown in FIG. 2, an elongated hole 10 having a width of 5 mm and a length of 5 cm is formed in an original plate 1. A round plate-shaped spring-like protrusion 20 having a diameter of 5 cm and a height of 1 cm is formed by press working centering on the punched hole. By processing the protrusions,
The punching hole is deformed because the central portion expands.

[0008]

Third Embodiment As shown in FIG. 3, a central circle 11 and four radial punched holes 10 continuous to the central circle 11 are formed in the original plate 1.
A polygonal line 12 connecting the outer ends of the punched holes and four trapezoidal portions 13 surrounded by the punched holes are formed. As shown in FIG. 4, with the trapezoidal portion 13 bent in a bellows shape, it is bent vertically downward to form four bellows-shaped spring projections 20.

[0009]

[Fourth Embodiment] FIG. 5 shows a radial spring projection 20.
This is an example. The original plate 1 is left with a central circle 11 having a diameter of 2 cm, and four punching holes 10 having a diameter of 3 cm and a width of 5 mm are radially provided around the central circle 11.

The inside of a quadrangle surrounded by four fold lines 12 connecting the outer ends of the punched holes and divided into four by the punched holes is press-worked to form a rectangular dish shape as shown in FIG. The spring protrusion 20 is formed.

[0011]

Fifth Embodiment As shown in FIG. 7, a blank 1 is provided with a U-shaped punching hole 10. A tongue 14 surrounded by a punched hole and a fold line 12 connecting the ends of the punched hole is formed. This tongue-like body is pressed to form a substantially crank-shaped spring-like projection 20 as shown in FIG.

[0012]

Sixth Embodiment As shown in FIG. 9, two parallel punching holes 10 having a length of 5 cm and a width of 5 mm are provided on the original plate 1 at intervals of 3 cm, and end portions of the punching holes are formed. A portion surrounded by the two fold lines 12 connecting the same and the punched hole is referred to as a band portion 15. The strip-shaped portion is pressed from above by an arc-shaped press die to form a spring-like protrusion 20 having a height of 2 cm and a side surface of an arc shape as shown in FIG. Since the strip portion is partially stretched, the width of the projection formed is slightly narrower than the width of the strip portion before molding.

FIG. 11 shows a fitting recess 30 into which the bottom half of the arc-shaped spring projection is fitted. It is formed by using an original plate made of the same steel plate as that used to form the protrusions. The base plate 1 is provided with two parallel punching holes having a length of 7 cm and a width of 5 mm at intervals of 5 cm, and the strip portion 15 between them is press-molded to be 5 cm as shown in the figure. Mountain-shaped projections 16 having a height of less than 2 cm are provided at intervals of meters. An arcuate fitting recess 3 is formed between the two mountain-shaped projections. This fitting recess also has spring performance.

As shown in the figure, when the two original plates 1 are placed in an overlapping manner, the fitting recess 3 can accommodate the bottom portion of the arcuate spring-like projection 20 shown in FIG. When an external force is applied to the upper original plate, the synergistic effect of the spring projection 20 and the fitting concave portion 3 works to reduce the force transmitted to the lower side.

[0015]

[Embodiment 7] In each of the above embodiments, the formation of various spring-like projections is illustrated. When forming a plane spring having a large area, although not specified, usually the whole surface is pressed to attach a large number of spring-like projections simultaneously to a wide original plate. FIG. 12 shows a disk-shaped planar spring 2 having a thickness of 2 cm, in which a large number of spring-shaped protrusions 20 having a height of 2 cm are formed on the lower surface of the original plate 1. When forming a plane spring, the up-down direction of the spring-like protrusion is not generally defined.

The completed planar spring 2 has a continuous space formed by the punched portion. Utilizing this continuous space,
The buffer layer 4 as shown in the figure can be formed by filling the whole or part of the space with the elastic resin in a molten state. If formed in this way, it has the effect of dispersing the force when a large force is applied from above.

Instead of the cushioning material, the space of the planar spring can be filled with a cotton-like sound absorbing material, a sound insulating material such as rubber, or a heat insulating material.

Generally, steel plates have fairly large elasticity, so that the original plate to be used may be general steel, but stainless steel may be used if higher spring characteristics are desired.
It is also possible to adopt a method of quenching after forming using spring steel.

When forming a planar spring, a large number of spring-like projections are provided on a wide original plate. However, when the projections have directionality, it is more forceful to form them in various directions. At times, it is desirable because the force is evenly distributed in each direction.

There are various forms of the spring-like protrusions illustrated in the embodiments, but the spring characteristics vary depending on the form. It is also possible to combine multiple types of leaf springs on the same original plate. By utilizing the respective spring characteristics, a planar spring that meets the purpose can be obtained.

[0021]

[Embodiment 8] FIG. 11 shows a kind of compound leaf spring, but as shown in FIG. 13, by stacking different kinds of leaf springs 2, a compound leaf spring having good performance. 22
Can be formed. In the case where the planar springs are combined, they may be directly superposed, and by sandwiching the cushioning sheet 41 between them, it is possible to prevent contact noise between the planar springs made of steel plates and also to prevent noise.

[0022]

[Embodiment 9] As an example of a method for applying a plane spring or a compound plane spring to a floor surface, as shown in FIG. 14, a cushioning sheet 41 made of foamed plastic or non-woven fabric is provided on the floor slab 5. Are spread, the planar springs 2 are laid on top of them, and a base plate 6 such as a control panel is laid on it.
The base plate is preferably fixed to the planar spring with screws or the like. It is also possible to lay a thin buffer sheet under the base plate. The floor finishing material 7 is laid on the base plate.

A base plate may be previously attached to the surface of the planar spring or the composite planar spring to form a spring panel. A buffer sheet may be interposed between the two. It is also possible to fill the hollow portion of the planar spring with rubber or the like to form the buffer layer. Such a panelized product, which does not easily come off, can be widely used not only for floors but also for walls and ceilings.

[0024]

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-sided spring can be formed by a simple process such as punching and pressing, 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 Various noises can be prevented by combining springs with different performances.

[Brief description of drawings]

FIG. 1 is a side sectional view showing an example of a spring protrusion.

FIG. 2 is a plan view showing an example of a spring protrusion.

FIG. 3 is a plan view showing a state in which a cross-shaped punching hole is attached to an original plate.

FIG. 4 is a side sectional view showing an example of a spring protrusion.

FIG. 5 is a plan view showing a state in which radial punching holes are attached to the original plate.

FIG. 6 is a side sectional view showing an example of a spring protrusion.

FIG. 7 is a plan view showing a situation in which a U-shaped punching hole is attached to an original plate.

FIG. 8 is a side sectional view showing an example of a spring protrusion.

FIG. 9 is a plan view showing a situation in which a double-shaped punched hole is provided in the original plate.

FIG. 10 is a side sectional view showing an example of a spring protrusion.

FIG. 11 is a side sectional view showing an example of a fitting recess.

FIG. 12 is a side sectional view showing an example of a planar spring provided with a buffer layer.

FIG. 13 is a side sectional view showing an example of a compound plane spring.

FIG. 14 is a side sectional view showing a construction state of a planar spring.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 original plate 10 punching hole 2 planar spring 20 spring-like protrusion 22 composite planar spring 3 fitting recess 4 buffer layer 41 buffer sheet 5 floor slab 6 base plate 7 floor finishing material

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 original plate 10 punching hole 11 center circle 12 polygonal line 13 trapezoidal part 14 tongue-shaped part 15 strip-shaped part 16 mountain-shaped protrusion 2 flat spring 20 spring-like projection 22 compound flat spring 3 fitting recess 4 cushioning layer 41 cushioning sheet 5 floor slab 6 Base plate 7 Floor finishing material

Claims (13)

[Claims] 1. A punched hole at a plurality of locations on a substrate made of a flat steel plate and arc-shaped, strip-shaped, dish-shaped, crank-shaped, and bellows-shaped portions having predetermined heights formed around the punched hole. A planar spring having a spring-shaped protrusion such as that formed into a disc-shaped body having a predetermined thickness as a whole substrate. 2. The flat spring according to claim 1, wherein the steel plate is a spring steel plate or a stainless steel plate. 3. The punching hole has a substantially circular shape, and the periphery thereof is projected to form a spring-like projection having a predetermined height and a predetermined shape, and the punched hole is characterized by a spring-like projection. ,
Sheet spring. 4. The punching hole has a substantially linear shape, and the periphery thereof is projected to form a spring-like projection having a predetermined height and a predetermined shape. , A leaf spring. 5. The punching hole has a plurality of radial shapes connected at a central portion, and the periphery thereof is projected to form a spring-like projection having a predetermined height and a predetermined shape.
The flat spring according to claim 2. 6. The punching hole is formed in a plurality of radial shapes with a center portion left, and the periphery thereof is projected to form a spring-like projection having a predetermined height and a predetermined shape.
The flat spring according to claim 2. 7. The punching holes are formed in a pair, and the strip-shaped portions sandwiched by the pair of punching holes are in a state where both ends are connected to the substrate or one end is separated from the substrate. 3. The method according to claim 1, wherein the protrusion is a spring-like protrusion having a predetermined height and a predetermined shape.
The leaf spring described. 8. A planar spring, characterized in that spring protrusions of different heights and / or different shapes according to claims 1 to 7 are provided. 9. A plate-like body which is continuous by punching holes, at least a part of which is filled with at least one of a cushioning body, a sound absorbing body, a sound insulating body and a heat insulating body. The planar spring according to any one of claims 1 to 8. 10. A composite planar spring, characterized in that a plurality of planar springs according to any one of claims 1 to 9 are stacked directly or through a planar body. 11. The planar spring according to claim 1, wherein the planar spring is superposed on a planar body provided with a fitting recess corresponding to at least the tip of each spring-like projection. It is a composite leaf spring. 12. The composite planar spring according to claim 11, wherein the fitting recess has a spring performance. 13. A rigid planar body is provided on the surface and / or the bottom surface of the planar spring or the composite planar spring according to claim 1 directly or through a buffer sheet. A spring panel characterized by being attached.