JPH05302643A - Floor panel for housing - Google Patents

Abstract

PURPOSE:To prevent radiating noise, vibration unpleasantless, rattling and the like of furniture by joining a plurality of plate springs together in a laminate manner with viscoelastic body or viscous body, and fixing a dynamic vibration reducer with weights disposed at the ends thereof to a steel frame and/or steel bars. CONSTITUTION:A frame 1 and bars 2 are formed of a steel plate having a groove- shaped cross section. A wooden surface member 4 is fixed to a frame body which is constituted of the steel frame 1 and the plurality of steel bars 2 disposed across the frame 1. A dynamic vibration reducer 9 is attached to a flange of the bar 2. If impulsive excitation force due to jumping, running and the like of a person is exerted on the panel surface member on a floor, the frame body and the surface member are freely vibrated in an integral manner. A plate spring or the like of the dynamic vibration reducer is resonantly vibrated due to the vibration of the steel frame 1 and/or the steel bars 2, and vibration energy of the steel frame 1 and the steel bars 2 is converted into thermal energy owing to shear deformation of a viscoelastic body according to the change of the plate spring due to the resonant vibration, to be discharged to the atmosphere. Consequently, it is possible to restrain vibration of the floor panel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention eliminates radiation noise from a floor panel, vibration discomfort, rattling of furniture, etc. due to vibration of the floor panel surface generated when a shocking vibration force such as jumping or running of a person is applied. It relates to a floor panel for a house intended to prevent it.

[0002]

2. Description of the Related Art Conventionally, in order to prevent vibration of a floor panel, a frame or a crosspiece constituting the floor panel has been made of a material having a large internal friction such as wood or a damping steel plate.

[0003]

However, the above-mentioned prior art has the following problems. When wood is used, the durability is poor, and the quality of the wood varies greatly due to the presence of knots, making quality control difficult. Further, in order to satisfy the load bearing standard of the floor panel, it is necessary to ensure the rigidity of the frame and the crosspiece, so that the cross-sectional dimensions of the wooden frame and the crosspiece naturally increase, and there are many restrictions in design and construction. It is 31.
Although it is in the frequency band of 5Hz and 63Hz, the vibration reduction amount in the frequency band of 31.5Hz and 63Hz is small according to the floor panel vibration test results (Table 1) using the conventional vibration damping steel plate making machine. The effect of preventing discomfort is poor.

[Table 1] Therefore, the present invention is excellent in durability, quality stability, design workability, and radiated noise and vibration non-existence of the floor panel due to vibration of the floor panel surface generated when a shocking excitation force such as jumping or running of a person is applied. The purpose of the invention is to provide a floor panel for a house that prevents a pleasant feeling and rattling of furniture.

[0004]

In order to achieve the above object, according to the present invention, a face material is attached to a frame body formed by erection of steel bars on a rectangular steel frame, and a plurality of leaf springs are attached. It is configured as a floor panel for a house in which a dynamic vibration absorber joined to each other in layers by an elastic body or a viscous body and having a weight attached to an end thereof is fixed to a steel frame or / and a steel crosspiece.

[0005]

[Function] When a shocking vibration force such as a person jumping or running is applied to the floor panel face material, the frame body and the face material integrally start free vibration. The leaf spring of the dynamic vibration absorber resonates due to the vibration of the bar, and the shear deformation of the viscoelastic body accompanying the change of the leaf spring due to the resonance vibration causes the vibration energy of the steel frame and the bar to become thermal energy. It is converted and released into the atmosphere, and vibrations of the steel frame and / or steel bars and thus the floor panel are suppressed. The natural frequency f of the dynamic vibration absorber is set by the following equation.

[Equation 1] K: Spring constant of leaf spring m: Mass of weight f This natural frequency f The vibration reduction that could not be achieved by the conventional technology by adjusting to the frequency band of 31.5Hz and 63Hz, which is the most vibration uncomfortable with floor panel vibration. The effect can be fully exhibited, and floor panel radiation noise due to floor panel vibration, vibration discomfort, and rattling of furniture can be prevented. Also, the width of the leaf spring and the weight of the dynamic vibration absorber is
Even if the dynamic vibration absorber is attached to the steel frame and the steel crosspiece in advance, the rectangular frame body will not be attached to the steel frame and the steel crosspiece by making the width not larger than the projecting width of the flange of the steel frame and the steel crosspiece. Since it does not become an obstacle when forming, there is no need to add special improvements to the conventional floor panel manufacturing process, and the manufacturing cost can be minimized. Furthermore, even if a heat insulating material or the like is attached to the face material after attaching the face material to the frame body, the dynamic vibration absorber does not become an obstacle. The floor panel for a house according to the present invention is excellent in durability and quality stability as compared with the conventional wooden panel because the frame and the crosspiece are made of steel, and the rigidity is large, so that the cross-sectional dimension can be reduced. Therefore, weight reduction, improvement of design workability, and reduction of manufacturing cost are expected. Further, in the floor panel for a house according to the present invention, the natural frequency becomes the same by standardizing the configuration, dimensions, and mounting method to the building body, and a dynamic vibration absorber adapted to this in advance is made into a steel frame or / and a steel frame. Can be attached to a bar.

[0006]

Embodiments of the present invention will be described below with reference to the accompanying drawings to provide an understanding of the present invention. still,
The following examples are examples of embodying the present invention and are not of the nature to limit the technical scope of the present invention. FIG. 1 is a perspective view of a floor panel for a house according to an embodiment of the present invention, FIG. 2 is a perspective view showing a mounting state of a dynamic vibration reducer on the floor panel, and FIG. 3 is an example of the dynamic vibration reducer. FIG. 4 is a schematic view showing an example of the vibration mode of the floor panel. In the floor panel P for a house according to this embodiment, as shown in FIG. 1, a frame 1 and a crosspiece 2 are formed of a steel material having a groove-shaped cross section, and a plurality of the above-mentioned steel crosspieces 2 are installed on the steel frame 1. A wooden face member 4 is attached to the formed frame body, and a dynamic vibration reducer 9 shown in FIG. 2 is attached inside the flange of the crosspiece 2. As shown in FIG. 3, the dynamic vibration reducer 9 has two leaf springs 6 projecting parallel to each other from the supporting portion 5 in the left and right directions, and the parallel leaf springs 6 are interposed via a viscoelastic body or a viscous body 7. Weights 8 are attached to the free ends of the leaf springs 6 which are joined together, and the leaf springs 6, the viscoelastic resin 7, and the weights 8 are arranged symmetrically about the support portion 5 as a center. 4 and is installed inside the flange at the position of the crosspiece 2 shown by a double circle mark in FIG. 4 via a mounting bolt 10. The ⊚ mark in Fig. 4 is the position where the amplitude is maximum, and when the dynamic vibration absorber is attached at this position, the resonance is best, so the vibration absorption effect of the dynamic vibration absorber is maximized. FIG. 5 shows the measured values of the vibration level of the floor panel for a house of the above-described embodiment and the measured values of the vibration level of the panel for a house when the dynamic vibration absorber is not incorporated, and the vibration reduction effect of up to 10 decibels was actually measured. It was The above-described dynamic vibration absorber can be attached to a steel frame as well as a steel bar. The cross-sectional shape of the steel crosspiece and the steel frame may be not only the above groove shape but also an H shape. Further, the number of leaf springs is not limited to two and may be plural. As the viscoelastic body sandwiched between the leaf springs, vinyl acetate resin, high-damping silicone rubber, polyolefin resin, etc. are used, and this can be replaced with a viscous body.

[0007]

[Effects of the Invention] When a shocking vibration force such as jumping or running of a person such as a child is applied to the face material, the face material, the steel frame and the steel crosspiece vibrate together. Therefore, the supporting portion of the dynamic vibration reducer attached inside the steel crosspiece and the flange of the steel frame indicated by ⊚ in FIG. 4 also vibrates integrally. However, if the natural frequency of the vibration system consisting of leaf springs, viscoelastic bodies or viscous bodies and weights is set to be equal to the natural frequency of the floor panel consisting of the above face material, frame and crosspiece, the vibration energy of the floor panel Moves to the dynamic vibration absorber. Further, since multiple leaf springs are relatively displaced and shear deformation occurs in the viscoelastic body or viscous body, the vibration energy that has moved to the dynamic vibration absorber is converted into heat energy in the viscoelastic body or viscous body and released to the atmosphere. To be done. As a result, the floor panel has excellent durability, quality stability, and workability, and vibration noise and vibration discomfort caused by vibration of the floor panel surface generated when a shocking vibration force is applied such as jumping or running of a person. , It is possible to prevent rattling of furniture.

[Brief description of drawings]

FIG. 1 is a perspective view of a floor panel for a house according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state where the dynamic vibration reducer is attached to the floor panel.

FIG. 3 is a cross-sectional view showing an example of the dynamic vibration reducer.

FIG. 4 is a schematic diagram showing an example of a vibration mode of the floor panel.

FIG. 5 is a graph showing the effect of the structure of the example.

[Explanation of symbols]

 P ... Floor panel 1 ... Steel frame 2 ... Steel crosspiece 4 ... Face material 5 ... Support part 6 ... Leaf spring 7 ... (Viscoelastic resin) Viscoelastic body 8 ... Weight 9 ... Dynamic vibration absorber

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hideo Utsuno 1-5-5 Takatsukadai, Nishi-ku, Kobe City Stock Company Kobe Steel Research Institute, Kobe Research Institute (72) Inventor Akira Kobayashi 1 Kanazawa-cho, Kakogawa-shi Shares Company Kobe Steel Works, Kakogawa Steel Works (72) Inventor Haruo Fujiwara 1-318 Wakihama-cho, Chuo-ku, Kobe Stock Company Kobe Steel Works Kobe Head Office (72) Inventor Shuhei Ochi 1-1 Senshin Nishimachi, Toyonaka City No. 12 National Housing Industry Co., Ltd. (72) Inventor Tatsuro Murai 1-1-12 Shinsenri Nishimachi, Toyonaka City No. 12 National Housing Industry Co., Ltd. (72) Minoru Kawada 1 1-1 Shinsenri Nishimachi, Toyonaka City No. 12 National Housing Industry Co., Ltd. (72) Inventor Miyao Nakamura 1-1-12 Shinsenri Nishimachi, Toyonaka City National Housing Products Business

Claims (7)

[Claims] 1. A face member is attached to a frame body formed by arranging steel bars on a rectangular steel frame, and a plurality of leaf springs are joined in layers by a viscoelastic body or a viscous body, and at the ends thereof. A floor panel for a house in which a dynamic vibration absorber with a weight is fixed to a steel frame and / or steel crosspiece. 2. The steel frame and the steel crosspiece are formed of a steel material having a groove or H-shaped cross section, and the dynamic vibration absorber is arranged inside the steel frame and the steel crosspiece. Residential floor panels. 3. The floor panel for a house according to claim 1, wherein the width of the leaf spring of the dynamic vibration absorber is not larger than the protruding width of the flange of the steel frame and the steel bar. 4. The floor panel for a house according to claim 1, wherein the dynamic vibration absorber is fixed to a flange of a steel frame and a steel bar. 5. The floor panel for a house according to claim 1, wherein a dynamic vibration absorber is fixed in the vicinity of a position where the maximum amplitude is exhibited due to its characteristic vibration characteristic. 6. The floor panel for a house according to claim 1, wherein the natural frequency of the dynamic vibration absorber and the natural frequency of the floor panel are substantially equal to each other. 7. The floor panel for a house according to claim 1, wherein the natural frequency of the dynamic vibration absorber is in a frequency band near 31.5 Hz or 63 Hz.