JPH0882081A - Noise insulating floor device - Google Patents

Abstract

PURPOSE: To enable reducing the vertical dimension of a cushioning mechanism and absorbing a wide range of impact noises. CONSTITUTION: A cushioning mechanism A is installed between a sleeper 1 and a floor joist 2. The cushioning mechanism A is provided with an elastic member 4. The elastic member 4 comprises a first plate spring 4a and a second plate spring 4b which is for heavy impacts. The first plate spring 4a is deformed elastically to resist impacts, and then the second plate spring 4b starts to be elastically deformed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound insulation floor device for reducing the impact vibration sound generated on the floor of a house from being transmitted to the downstairs, and in particular, it is interposed between a floor base material and a floor bottom material. The present invention relates to a sound insulation floor device capable of reducing the vertical dimension of a shock absorbing mechanism and absorbing a wide range of impact sound.

[0002]

2. Description of the Related Art In recent years, floor impact noise from the upper floor has become a serious problem in apartment buildings and the like. The floor impact sound includes a floor impact sound due to a light weight impact generated during normal walking and a floor impact sound due to a heavy impact caused when a heavy object is dropped or a child jumps up. For, there was no effective solution other than thickening the floor slab.

However, when the floor slab is thickened, the number of floors that can be arranged within a certain height decreases, and the construction material cost increases, so it cannot be said that it is an effective means. Moreover, this method is extremely difficult to apply to a wooden house.

Therefore, in some cases, for example, JP-A-62-23
As disclosed in Japanese Patent No. 6958, there is proposed a sound insulation floor device in which a shock absorbing mechanism is interposed between a floor base material and a floor lower surface material, and the shock absorbing sound is absorbed by the shock absorbing mechanism. .

[0005]

By the way, in the conventional sound insulation floor device, an elastic plate-like member is arranged between the projecting support on the upper surface of the floor base material and the leg on the lower surface of the floor bottom material. Although it has a structure that absorbs impact vibration noise by the elastic force of the sheet, it is necessary to provide protrusions on both the floor base material and the floor bottom material, so there is a large vertical gap between the floor base material and the floor bottom material. There is a problem that it cannot be applied to an existing building because it requires dimensions and the opening and closing doors cannot be opened and closed.

Further, since the conventional sound insulation floor device has a structure that absorbs impact vibration noise by the elastic force of a single elastic plate, there is a problem that the range of impact noise that can be absorbed is narrow.

The present invention has been made in view of the above situation, and can be easily applied to existing buildings and wooden houses by reducing the vertical dimension of the cushioning mechanism, and can absorb a wide range of impact sound. It is an object to provide a floor device.

[0008]

In order to achieve the above object, the present invention provides a sound insulation floor device which absorbs impact vibration noise by a shock absorbing mechanism interposed between a floor base material and a floor bottom material.
The cushioning mechanism is provided with a plurality of plate-shaped elastic members which are curved in the vertical interval direction between the floor base material and the floor undersurface material, and each elastic member is configured to start elastically deforming at different timings. Characterize.

Further, in the present invention, when an impact load is applied to the floor underside material, the plurality of plate-like elastic members which are curved in the vertical interval direction between the floor base material and the floor underside material become flat. Elastically deforms in the direction, and the impact vibration sound is absorbed by this elastic deformation.

By the way, each elastic member is configured to be elastically deformed at mutually different timings. Therefore, the number of elastic members elastically deformed changes depending on the magnitude of the impact load. Therefore, it is possible to absorb a wide range of impact sounds.

The present invention also provides at least one cushioning mechanism.
It is characterized in that a damping mechanism is provided to give resistance to the elastic return operation of the two elastic members. As a result, when the elastic member elastically returns, resistance is given by the damping mechanism, and the vibration of the elastic member is damped in a short time to improve the living environment.

The present invention is further characterized in that the damping mechanism is constituted by a spring member for urging the elastic member in the elastic deformation direction. And thereby, it becomes possible to obtain the damping effect according to the application place by adjusting the spring member.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to the drawings. 1 and 2 show a sound insulation floor device according to a first embodiment of the present invention. In the drawings, reference numeral 1 is a floor pulling material which is a floor base material, and reference numeral 2 is a joist which is a floor bottom material. A shock absorbing mechanism A for absorbing shock vibration noise is interposed between the Daihiki 1 and the joist 2.

As shown in FIGS. 1 to 3, the buffer mechanism A includes a base plate 3 arranged on the large pull 1 and an elastic member 4 arranged on the base plate 3. And a damping mechanism 5 that also serves as a support mechanism.

The base plate 3 is shown in FIGS.
As shown in FIG. 3, it is formed of plastic or metal into a rectangular plate shape, and support members 6 constituting a damping mechanism 5 to be described later are provided at both ends in the longitudinal direction thereof.

Further, the elastic member 4 has the structure shown in FIGS.
As shown in FIG. 3, the first leaf spring 4a for light weight impact, the second leaf spring 4b for heavy impact, and the stopper metal fitting 4c that connects these leaf springs 4a and 4b at the top are used to The upper end projection of the metal fitting 4c is adapted to pierce the joist 2.

As shown in FIGS. 1 to 3, the first plate spring 4a is formed in a rectangular plate shape which is curved in an arc shape convex toward the joist 2 side, and the second plate spring 4b is formed. Is
A spring material having the same or different spring constant as that of the first leaf spring 4a and formed in an arc shape having a curvature smaller than that of the first leaf spring 4a,
When the first plate spring 4a is not elastically deformed, it is in a state of being lifted from the base plate 3. The second leaf spring 4b is provided with the guide piece 1 provided on the base plate 3 after the first leaf spring 4b is elastically deformed to some extent.
The first plate spring 4a and the first plate spring 4a are elastically deformed against a weight impact.

As shown in FIGS. 2 and 3, rectangular openings 7 are provided at both ends of the first leaf spring 4a in the longitudinal direction, and each of the openings 7 has a rectangular shape.
As shown in FIGS. 1 to 3, the free end of the support member 6 is inserted from the outside, whereby the first plate spring 4a is elastically deformably supported by the base plate 3. Further, both ends of the first plate spring 4a in the longitudinal direction slide on the base plate 3 due to elastic deformation.

As shown in FIGS. 1 to 4, the damping mechanism 5 has bases at both ends in the longitudinal direction of the base plate 3.
A support member 6 integrally provided by cutting and raising from the plate 3 and a plurality of projections 8 provided on the lower surface of the support member 6 are provided. The cross-sectional shape is smooth and the left side is steep. Then, when the elastic member 4 elastically deforms and elastically returns to the protrusions 8, the openings 7 are formed.
The lower end edges of the two contact with each other and provide resistance only to the elastic return operation. In addition, each of the support members 6
As shown in FIGS. 2 and 3, the base end for connecting to the base plate 3 is formed wide, and even if the opening 7 of the base plate contacts each protrusion 8, Considered to withstand it enough.

Next, the operation of this embodiment will be described. As shown in FIGS. 1 and 2, when a shock load is applied to the joist 2 with the cushioning mechanism A interposed between the large haul 1 and the joist 2, first the first leaf spring 4a is elastically deformed. Then, both ends thereof slide on the base plate 3, and the shock vibration noise is absorbed.

By the way, when the applied impact load is small, that is, when the impact is light, only the first leaf spring 4 is elastically deformed, but when the applied impact load is large, that is, when the impact is heavy. In this case, the first leaf spring 4a
After being elastically deformed to some extent, the second leaf spring 4b comes into contact with the guide piece 10 and both leaf springs 4a and 4b are elastically deformed. Then, the impact vibration sound of the weight impact is absorbed.

On the other hand, when the first plate spring 4a is elastically deformed and elastically restored, the lower end edge of the opening 7 comes into contact with the respective projections 8 on the lower surface of the support member 6.
4 has a gentle cross section on the right side surface and a steep left side surface in FIG. 4, so that when the first leaf spring 4a is elastically deformed, even if it contacts the protrusion 8, almost no resistance is given. On the contrary, when elastically returning, a large resistance force is given by the contact with the projection 8. Therefore, the vibration of the elastic member 4 is damped in a short time, and the comfortability is improved.

In the first embodiment,
Although the case where each support member 6 faces the inside and is cut and raised from the base plate 3 has been described, the support members 6 may be cut and raised toward the outside as shown in FIG. It may be provided on the upper surface of 6 and the upper edge of the opening 7 may be brought into contact. In addition, each projection 8 is attached to the support member 6
As shown in FIG. 6 and FIG.
It may be provided on the upper surface of the grate 3. Further, each supporting member 6 is formed separately from the base plate 3 and is formed as a base.
It may be fixed to the plate 3.

8 to 12 show a second embodiment of the present invention. Instead of the base plate 3, elastic member 4 and damping mechanism 5 in the first embodiment,
The base plate 13, the elastic member 14, the support mechanism 15A and the damping mechanism 15B are used.

That is, as shown in FIGS. 9 and 10, the base plate 13 is made of plastic or metal in the form of a rectangular plate, and two inner protrusions 16 are formed on the upper surface thereof. And two outer protruding pieces 17 are provided respectively, and a damping mechanism 15B described later is mounted on each of these protruding pieces 16, 17.

As shown in FIGS. 9 to 12, the first leaf spring 1 of the elastic member 14 is provided on both sides of each of the outer protruding pieces 17.
Sliding protrusions 18 on which 4a slides are respectively provided, and the damping mechanism 15B is configured such that both sliding protrusions 18 regulate the position in the width direction.

As shown in FIGS. 8 to 12, hook-like locking pieces 19 are provided at the outer side positions of the sliding projections 18 in the width direction, respectively. A support mechanism 15 for elastically deformably supporting the first plate spring 14a on the base plate 13 by means of the respective sliding projections 18.
It constitutes A.

As shown in FIGS. 9 to 12, a projecting piece 22 for restricting the longitudinal position of the recess 21 and the elastic member 14 is provided at the outer side in the longitudinal direction of each of the support mechanisms 15A.
Are provided respectively.

On the other hand, the damping mechanism 15B is, as shown in FIG. 8, a plate-shaped spring portion 23 located at the center in the longitudinal direction and curved in a convex shape toward the elastic member 14, and both ends of the spring portion 23. From the plate-shaped damping portion 24 extending in the longitudinal direction from
The cross-section is formed in a hat shape, and the spring portion 23 imparts a spring property to the damping mechanism 15B. Then, the tips of the respective damping portions 24 come into contact with the bent portions 25 provided at both ends in the longitudinal direction of the first plate spring 14a, and bias the first plate spring 14a in the elastic deformation direction. .

Therefore, the damping mechanism 15 is provided by the spring portion 23.
Since the spring property is given to B, the damping effect according to the application place can be easily obtained by adjusting the spring portion 23.

In each of the above-described embodiments, the elastic members 4 and 14 are replaced by two leaf springs 4a, 4b, 14a and 14 of the leaf springs.
Although the case of being configured by b is described, the number of leaf springs is not particularly limited, and the impact vibration sound in a wider range can be absorbed if the number of leaf springs is three or more. Further, the base plates 3 and 13 may be omitted if necessary.

Further, in each of the above-described embodiments, the case where the elastic members 4 and 14 are used in the upper side has been described, but they may be used in the downward direction.

Further, in each of the above-mentioned embodiments, the case where the elastic members 4 and 14 are formed of leaf springs having the same plate thickness at various places has been described, but for example, the plate thickness at the top is thick and gradually increases toward both ends in the longitudinal direction. A leaf spring having a thin plate thickness may be used.

Although not particularly described in the above-mentioned respective embodiments, in the case of a wooden house, a heavy object such as a closet is often arranged in a range of about 600 mm around the room. Therefore, instead of the buffer mechanism A, a spacer such as a piece of wood may be interposed between the large haul 1 and the joist 2 in this range.

Further, in each of the above-mentioned embodiments, the case where it is applied to a wooden house has been described, but it can be similarly applied to an apartment house. In this case, the cushioning mechanism A is interposed between the floor slab as the floor base material and the plywood plate as the floor lower surface material.

[0036]

As described above, according to the present invention, the impact vibration sound is absorbed by the plurality of plate-shaped elastic members which are curved in the vertical interval direction between the floor base material and the floor undersurface material. The vertical dimension of the mechanism can be reduced. In addition, since each elastic member is configured to start elastically deforming at different timings, the number of elastic members that elastically deform changes according to the magnitude of the impact load, which causes impact noise in a wide range. Can be absorbed.

The present invention also provides at least one cushioning mechanism.
Since the damping mechanism that provides resistance to the elastic return operation of the two elastic members is provided, the vibration of the elastic members is damped in a short time, and the comfortability can be improved.

Further, according to the present invention, since the damping mechanism is composed of the spring member for urging the elastic member in the elastic deformation direction,
The damping effect according to the application place can be easily obtained by adjusting the spring member.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a sound insulation floor device according to a first embodiment of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a plan view of a buffer mechanism.

FIG. 4 is an enlarged cross-sectional view of a main part of FIG.

FIG. 5 is an explanatory view showing a modified example of the damping mechanism of FIG.

6 is an explanatory view showing another modification of the damping mechanism of FIG.

FIG. 7 is a plan view of FIG. 6;

FIG. 8 is a sectional configuration diagram showing a second embodiment of the present invention.

9 is a plan view of the base plate of FIG.

10 is a cross-sectional view taken along line XX of FIG.

11 is an enlarged view of part XI of FIG.

12 is an enlarged sectional view taken along line XII-XII in FIG.

[Explanation of symbols]

 1 Daihiki 2 joist 4,14 Elastic member 4a, 14a 1st leaf spring 4b, 14b 2nd leaf spring 5,15B Damping mechanism 6 Support member 10 Guide piece 15A Support mechanism A Buffer mechanism

Claims (3)

[Claims] 1. A sound insulation floor device that absorbs impact vibration noise by a shock absorbing mechanism interposed between a floor base material and a floor lower surface material, wherein the shock absorbing mechanism includes a vertical gap between the floor base material and the floor lower surface material. A sound insulation floor device comprising a plurality of plate-shaped elastic members that bend in a direction, and each elastic member begins to elastically deform at mutually different timings. 2. The sound insulation floor device according to claim 1, wherein the cushioning mechanism includes a damping mechanism that provides resistance to an elastic return operation of at least one elastic member. 3. The sound insulation floor device according to claim 2, wherein the damping mechanism includes a spring member that biases the elastic member in an elastic deformation direction.