JPH0684676B2 - Sound insulation floor equipment - Google Patents

Description

Description: TECHNICAL FIELD 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 particularly to a floor base material and a floor underside material. The present invention relates to a sound insulation floor device capable of reducing the vertical size of a cushioning mechanism interposed between and.

[Prior Art] In recent years, floor impact noise from the upper floors 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 that is usually caused by 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 steps that can be arranged within a certain height is reduced, and the construction material cost is also increased, 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, as disclosed in, for example, Japanese Patent Laid-Open No. 62-236958, a cushioning mechanism is interposed between the floor base material and the floor underside material, and the shock vibration sound is absorbed by this cushioning mechanism. Such a sound insulation floor device has been proposed.

[Problems to be Solved by the Invention] In the conventional sound insulation floor device, an elastic plate-like body is arranged between a protruding support on the upper surface of the floor base material and a 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.

Also, when the elastic plate is bent by the impact load,
Since it does not have a mechanism for attenuating the vibration of the elastic plate-like body, it has a problem of poor habitability.

The present invention has been made in view of the present situation, and provides a sound insulation floor device that can be easily applied to an existing building or a wooden house by reducing the vertical dimension of the cushioning mechanism and does not deteriorate the habitability. The purpose is to

[Means for Solving the Problems] As a means for achieving the above object, the present invention provides a sound insulation floor device that absorbs impact vibration sound by a buffer mechanism interposed between a floor base material and a floor bottom material, As the buffer mechanism,
A base plate; a plate-shaped elastic member arranged on one surface side of the base plate and curved in a convex shape to the side opposite to the base plate; a support mechanism for elastically deformably supporting the elastic member on the base plate; elastic return of the elastic member It is characterized in that a damping mechanism for giving a resistance to the operation is used.

Further, in the present invention, the supporting mechanism includes a supporting member having one end fixed to the base plate; an opening provided at an end portion in the longitudinal direction of the elastic member and into which a free end of the supporting member is inserted. It is preferable to use one that is provided on at least one of the upper and lower surfaces of the support member and that includes a plurality of protrusions with which the edge of the opening comes into contact when the elastic member elastically returns. .

Also, as a support function, a pair of support members having hooks that rise from the base plate along both sides of the longitudinal direction end of the elastic member and bend inward at the tip; springs that bias these support members inward. It is preferable to use the one provided with (1) and (2); and the damping mechanism provided with a plurality of projections provided at the end portion in the longitudinal direction of the elastic member and brought into contact with the hook portion when the elastic member is elastically restored.

In addition, as the support mechanism, a support member including a support member surrounding the upper end and both sides of the longitudinal end of the elastic member in a gate shape; and a spring connecting the support member to the base plate; It is preferable to use a member provided with a plurality of protrusions provided at the end portion in the longitudinal direction of the elastic member and with which the supporting member comes into contact when the elastic member returns to the elastic state.

Further, it is preferable to use a damping mechanism including a spring member for urging the elastic member in the elastic deformation direction.

Further, it is more preferable to use, as the elastic member, a plate-shaped second elastic member that is attached to the central portion of the inner surface of the elastic member in the longitudinal direction and starts elastically deforming after the elastic member has elastically deformed a certain amount or more.

Further, as a damping mechanism, a plate-shaped spring portion disposed in the longitudinal center of the surface of the base plate on the elastic member side and curved in a convex shape toward the elastic member; extending from both ends of the spring portion in the longitudinal direction. A plate-shaped attenuating portion whose tip contacts the longitudinal end portion of the elastic member to urge the elastic member in the elastic deformation direction;
It is preferable that the spring portion is configured to start elastically deforming by contact with the elastic member after the elastic member elastically deforms by a certain amount or more.

[Operation] In the sound insulation floor device according to the present invention, when an impact load is applied to the floor lower surface material, the plate-like elastic member that is convexly curved toward the side opposite to the base plate elastically deforms in a flattening direction, This elastic deformation absorbs impact vibration noise.

By the way, the elastically deformed elastic member is
The damping mechanism provides resistance. Therefore, the vibration of the elastic member is attenuated in a short time, and the comfortability is improved. In addition, the elastic member is elastically deformably supported by the base plate by the support mechanism. Therefore, there is no problem in the downward use in which the elastic member is below the base plate, as well as in the upward use in which the elastic member is above the base plate.

In the present invention, the support mechanism includes a support member having one end fixed to the base plate; an opening provided at the end of the elastic member in the longitudinal direction and into which the free end of the support member is inserted. , And as a damping mechanism,
By using a support member provided with at least one of the upper and lower surfaces and having a plurality of projections with which the edge of the opening contacts when elastically returning the elastic member, a sufficient damping effect can be obtained with a simple structure. Can be expected.

Also, as the support mechanism, a pair of support members having hooks that rise from the base plate along both sides of the longitudinal ends of the elastic member and bend inward at their tips; and a spring that biases these support members inward. Or a support mechanism provided with a plurality of projections provided at the longitudinal end of the elastic member and contacted by the hook when the elastic member returns to the elastic state, or as a damping mechanism. As a mechanism, a supporting member that surrounds the upper surface and both sides of the longitudinal end of the elastic member in a gate shape; and a spring that connects the supporting member to the base plate; By using the one provided with a plurality of protrusions which are provided at the end in the longitudinal direction and which the supporting member comes into contact with when the elastic member recovers elastically, a damping effect which is always stable even after permanent use It can be expected.

Moreover, by using a damping mechanism including a spring member that biases the elastic member in the elastic deformation direction, a damping effect according to the application place can be obtained by adjusting the spring member.

In addition, as the elastic member, a plate-shaped second elastic member that is attached to the central portion of the inner surface of the elastic member in the longitudinal direction and starts elastically deforming after the elastic member has elastically deformed by a certain amount or more is used. It is possible to absorb shock vibration noise.

Further, as a damping mechanism, a plate-shaped spring portion disposed in the longitudinal center of the surface of the base plate on the elastic member side and curved in a convex shape toward the elastic member; extending from both ends of the spring portion in the longitudinal direction. A plate-shaped attenuating portion whose tip contacts the longitudinal end portion of the elastic member to urge the elastic member in the elastic deformation direction;
By absorbing the shock vibration sound of a wide range with a simple structure, the spring part is configured to start elastically deforming by contact with the elastic member after the elastic member is elastically deformed by a certain amount or more. It becomes possible to do.

[Embodiment] A first embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

In FIG. 1 and FIG. 2, reference numeral 1 is Daihiki, which is a floor base material, and reference numeral 2 is a joist, which is a floor undersurface material, and shock vibration noise is absorbed between Daihiki 1 and joist 2. The impact mechanism A is interposed.

This cushioning mechanism A is, as shown in FIGS. 1 to 3,
It includes a base plate 3 arranged on the Daihiki 1, an elastic member 4 arranged on the base plate 3, and a damping mechanism 5 also serving as a support mechanism.

As shown in FIGS. 1 to 3, the base plate 3 is formed of a plastic or metal into a rectangular plate shape, and has support members 6 constituting a later-described damping mechanism 5 at both longitudinal ends thereof. Are provided respectively.

Further, as shown in FIGS. 1 to 3, the elastic member 4 is formed of a rectangular leaf spring that is curved in an arc shape convex toward the joist 2 side, and the joist 2 is formed on the top surface of the top thereof. A projecting piece 4a that sticks into the is provided. Further, as shown in FIG. 2 and FIG. 3, at both longitudinal ends of the elastic member 4,
Each of the rectangular openings 7 is provided. As shown in FIGS. 1 to 3, the free ends of the support members 6 are inserted into the openings 7 from the outside, whereby the elastic members 4 are elastically deformable on the base plate 3. It is supposed to be supported. Further, both ends of the elastic member 4 in the longitudinal direction slide on the base plate 3 by elastic deformation.

The damping mechanism 5, as shown in FIGS. 1 to 4,
A support member 6 integrally provided by cutting and raising from the base plate 3 and a plurality of protrusions 8 provided on the lower surface of the support member 6 are provided at both ends of the base plate 3 in the longitudinal direction. Has a cross-sectional shape in which the right side surface in FIG. 4 is gentle and the left side surface is steep. When the elastic member 4 is elastically deformed and elastically restored, the lower edge of the opening 7 comes into contact with each of the protrusions 8 and provides resistance only to the elastic return operation. Further, each of the support members 6 has a second
As shown in FIG. 3 and FIG. 3, the base end of the connection to the base plate 3 is formed wide so that even if the openings 7 of the base plate come into contact with the respective projections 8, it can be sufficiently endured.

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 haul 1 and the joist 2, the elastic member 4 elastically deforms. Both ends of the lever slide on the base plate 3 to absorb impact vibration noise.

By the way, when the elastic member 4 is elastically deformed and elastically restored, the lower end edge of the opening 7 comes into contact with each projection 8 on the lower surface of the support member 6. Since the right-hand side surface is gentle and the left-hand side surface is steep, the elastic member 4 elastically deforms with little resistance even if it comes into contact with the projection 8.
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 addition, in the said 1st Example, although the case where each support member 6 faces inside and was cut and raised from the base plate 3, you may make it cut and raise toward the outside, as shown in FIG. Further, each protrusion 8 may be provided on the upper surface of the support member 6 so that the upper edge of the opening 7 is brought into contact with each other. Alternatively, the protrusions 8 may be provided on the upper surface of the base plate 3 as shown in FIGS. 6 and 7 instead of being provided on the support member 6. In addition, each support member 6 is formed separately from the base plate 3, and this is formed as a base plate 3.
It may be fixed to.

8 and 9 show a second embodiment of the present invention, in which a damping mechanism 15 is used instead of the damping mechanism 5 in the first embodiment.

That is, as shown in FIGS. 8 and 9, the damping mechanism 15 includes a pair of support members 16 that stand up from the base plate 3 along both sides of both ends of the elastic member 4. A hook portion 16a that bends toward the elastic member 4 side is provided at the tip of each. And
The hook portions 16a on both sides facing each other through the elastic member 4 are pulled inward by a spring 17 as shown in FIG.

On the other hand, as shown in FIGS. 8 and 9, a plurality of protrusions 8 are provided on the upper surfaces of both ends of the elastic member 4 at positions corresponding to the respective hook portions 16a. Each of these protrusions 8
As shown in FIG. 8, the elastic member 4 has a smooth outer surface in the longitudinal direction and a steep inner surface, and when the elastic member 4 elastically deforms and elastically returns, The hook portions 16a are in contact with each other. Then, due to the elastic force of the support member 16 and the hook portion 16a itself and the sectional shape of each protrusion 8, a large resistance is given only to the elastic return operation of the elastic member 4 as in the first embodiment. It is like this.

Therefore, according to this embodiment, the same effect as that of the first embodiment can be expected.

In the second embodiment, the case where the projection 8 is provided on the upper surface of the elastic member 4 has been described.
It may be provided on both side edges in the width direction of the above and may be brought into direct contact with the supporting member 16.

10 and 11 show a third embodiment of the present invention, in which a damping mechanism 25 is used instead of the damping mechanism 5 in the first embodiment.

That is, the damping mechanism 25, as shown in FIG. 10 and FIG. 11, is provided with a supporting member 26 that surrounds the upper surface and the both ends of the elastic member 4 in a gate shape, and the lower end of each supporting member 26 is , And is connected to the base plate 3 via the spring 27. In addition, the upper surface of both ends in the longitudinal direction of the elastic member 4 is
As shown in FIGS. 10 and 11, a plurality of protrusions 8 having the same sectional shape as that of the second embodiment are provided, and the elastic member 4 is provided.
When the elastic deformation and the elastic return of the, the support member 26 is contacted.

Therefore, according to this embodiment, the same effect as that of the first embodiment can be expected. Then, if both ends of the support member 26 and the spring 27 are housed in a tubular member provided upright on the base plate 3 so that the support member 26 is allowed to move only up and down, a more reliable operation can be expected.

FIG. 12 shows a fourth embodiment of the present invention.
Instead of the damping mechanism 5 which also functions as a supporting mechanism in the embodiment, a supporting mechanism 35A and a damping mechanism 35B are used.

That is, the support mechanism 35A, as shown in FIG.
A supporting member 36 having both ends which are inserted into the vertically long openings 7 provided at both ends of the supporting member 6 in the longitudinal direction, and a connecting rod 36b which connects the supporting rod 36a to the base plate 3.
At both ends of the support rod 36a, both ends in the longitudinal direction of the elastic member 4 are constantly urged outward, and a damping mechanism is provided.
The springs 37 constituting 35B are mounted respectively. The biasing force of each spring 37 provides resistance to the elastic return operation of the elastic member 4.

Therefore, also in this embodiment, a sufficient damping effect can be expected by setting the spring constant of the spring 37 to an appropriate value.

FIG. 13 shows a fifth embodiment of the present invention.
Instead of the damping mechanism 5 in the embodiment, a support mechanism 45A and a damping mechanism 45B are used.

That is, the support mechanism 45A, as shown in FIG.
The elastic member is constituted by a support member 46 for fixing one end in the longitudinal direction to the base plate 3 so as to be elastically deformable, and the damping mechanism 45B is constituted by a spring 47 for pulling the other end in the longitudinal direction of the elastic member 4 to the outside. . The biasing force of the spring 47 provides resistance to the elastic return operation of the elastic member 4. In this example,
Since one end of the elastic member 4 is fixed to the base plate 3, the projecting piece 4a in the first embodiment is omitted.

Therefore, also in this embodiment, a sufficient damping effect can be expected by selecting the spring constant of the spring 47.

FIG. 14 shows a sixth embodiment of the present invention, in which an elastic member 54 is used instead of the elastic member 4 in each of the above embodiments.

That is, as shown in FIG. 14, the elastic member 54 includes a first leaf spring 54a for lightweight impact and a second leaf spring 5 for heavy impact.
4b and a stopper fitting 54c connecting the leaf springs 54a, 54b at the top, and the stopper fitting 54c also serves as the protruding piece 4a in the first embodiment.

The first leaf spring 54a, as shown in FIG.
The second leaf spring 54b has the same structure as that of the elastic member 4 in the embodiment, and the second leaf spring 54b is made of a spring material having the same or different spring constant as that of the first leaf spring 54a and an arc shape having a smaller curvature than the first leaf spring 54a. In the state in which the first plate spring 54a is not elastically deformed, it is lifted from the base plate 3. The second leaf spring 54b contacts the guide piece 60 provided on the base plate 3 after the first leaf spring 54a is elastically deformed to some extent, and is elastically deformed together with the first leaf spring 54a against a heavy impact. Has become.
The other points are the same as those of the first embodiment.

By configuring the elastic member 54 with two leaf springs 54a and 54b having the same or different spring constants, it is possible to absorb impact vibration noise in a wider range. If the number of leaf springs constituting the elastic member is three or more, it is possible to absorb impact vibration sound in a wider range.

15 to 19 show a seventh embodiment of the present invention. Instead of the base plate 3, the elastic member 4 and the damping mechanism 5 in the first embodiment, a base plate 63, an elastic member 54 and a supporting mechanism 65A are shown. And a damping mechanism 65B is used.

That is, the base plate 63 is shown in FIGS.
As shown in the figure, it is formed of a plastic or metal into a rectangular plate shape, and two inner projecting pieces 66 and two outer projecting pieces 67 are provided on the upper surface thereof, and a damping mechanism 65B described later is provided. Is placed on each of these projecting pieces 66, 67.

As shown in FIGS. 16 to 19, sliding protrusions 68 on which the first leaf spring 54a of the elastic member 54 slides are provided on both sides of each of the outer protrusions 67, and the damping mechanism is provided. The position of 65B in the width direction is regulated by these sliding protrusions 68.

As shown in FIG. 15 to FIG. 19, hook-shaped locking pieces 69 are provided at outer positions in the width direction of each of the sliding projections 68. Each sliding protrusion 68
Thus, a support mechanism 65A for supporting the first plate spring 54a on the base plate 63 so as to be elastically deformable is configured.

As shown in FIGS. 16 to 19, projections 72 for restricting the positions of the recess 71 and the elastic member 54 in the longitudinal direction are provided at positions outside the respective supporting mechanisms 65A in the longitudinal direction.

On the other hand, as shown in FIG. 15, the damping mechanism 65B includes a plate-shaped spring portion 73 located at the center in the longitudinal direction and curved in a convex shape toward the elastic member 54, and a longitudinal portion extending from both ends of the spring portion 73. It is formed in a hat-shaped cross section from a plate-shaped damping portion 74 extending in the direction, and the spring mechanism 73 imparts spring characteristics to the damping mechanism 65B. And each of the attenuating units
The tip of 74 contacts the bent portions 75 provided at both ends in the longitudinal direction of the first leaf spring 54a, and biases the first leaf spring 54a in the elastic deformation direction.

By using the support mechanism 65A and the damping mechanism 65B, the structure can be simplified as compared with the case of the sixth embodiment.

FIG. 20 shows the eighth embodiment of the present invention.
Instead of the elastic member 54 and the damping mechanism 65B in the embodiment,
The elastic member 4 and the damping mechanism 85B are used.

That is, the damping mechanism 85B, as shown in FIG. 20, is similar to the damping mechanism 65B of the seventh embodiment in that the spring portion 86 and the damping portion 87 are provided.
Although it is formed in a hat shape in cross section from, the spring portion 86 is
It is formed to be larger than the spring portion 73 of the damping mechanism 65B.
Then, the spring portion 86 starts to elastically deform due to contact with the elastic member 4 after the elastic member 4 elastically deforms by a certain amount or more, and absorbs the impact vibration sound together with the elastic member 4. That is, the spring portion 86 has both the function of the spring portion 73 and the function of the second plate spring 54b in the seventh embodiment.

In FIG. 20, reference numeral 88 is a bent portion provided at each end of the elastic member 4 in the longitudinal direction in order to bring the tips of the respective damping portions 87 into contact with each other, and reference numeral 89 is the elastic member 4 and the spring portion 86. Is a cover made of soft plastic or rubber attached to the elastic member 4 to absorb the contact sound of the.
It also serves as a protective cover for preventing the elastic member 4 from corroding even when brought into contact with the water-containing surface. The other points are the same as those of the seventh embodiment.

Therefore, by using the damping mechanism 85B,
The structure is further simplified as compared with the case of the embodiment, and the shock vibration noise in a wide range can be absorbed.

In each of the above-mentioned embodiments, the case where the elastic members 4,54 are used with the upper side described has been described.
You may make it use 54 with the lower side.

Further, in each of the above-mentioned embodiments, the case where the elastic members 4,54 are formed by the leaf springs having the same plate thickness at each place has been described.
For example, a plate spring may be used in which the plate thickness of the top portion is large and the plate thickness is gradually reduced toward both ends in the longitudinal direction.

Although not particularly described in each of the above-described 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, a spacer such as a piece of wood may be interposed between the large haul 1 and the joist 2 in this range instead of the buffer mechanism A.

Furthermore, in each of the above-described 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.

EFFECTS OF THE INVENTION As described above, according to the present invention, the shock-vibration sound is absorbed by the plate-shaped elastic member curved in an arc shape. Therefore, the vertical dimension of the cushioning mechanism can be made small and sufficient. The effect of absorbing shock vibration sound is obtained. Further, since the cushioning mechanism includes the damping mechanism, the vibration of the elastic member is damped in a short time, and the comfortability can be improved. Further, since the elastic member is elastically deformably supported by the base plate by the support mechanism, the cushioning mechanism can be used upside down.

In the present invention, the support mechanism includes a support member having one end fixed to the base plate; an opening provided at the end of the elastic member in the longitudinal direction and into which the free end of the support member is inserted. , And as a damping mechanism,
By using a support member provided with at least one of the upper and lower surfaces and having a plurality of projections with which the edge of the opening contacts when elastically returning the elastic member, a sufficient damping effect can be obtained with a simple structure. Can be expected.

Also, as the support mechanism, a pair of support members having hooks that rise from the base plate along both sides of the longitudinal ends of the elastic member and bend inward at their tips; and a spring that biases these support members inward. Or a support mechanism provided with a plurality of projections provided at the longitudinal end of the elastic member and contacted by the hook when the elastic member returns to the elastic state, or as a damping mechanism. As a mechanism, a supporting member that surrounds the upper surface and both sides of the longitudinal end of the elastic member in a gate shape; and a spring that connects the supporting member to the base plate; By using the one provided with a plurality of protrusions which are provided at the end in the longitudinal direction and which the supporting member comes into contact with when the elastic member recovers elastically, a damping effect which is always stable even after permanent use It can be expected.

Moreover, by using a damping mechanism including a spring member that biases the elastic member in the elastic deformation direction, a damping effect according to the application place can be obtained by adjusting the spring member.

In addition, as the elastic member, a plate-shaped second elastic member that is attached to the central portion of the inner surface of the elastic member in the longitudinal direction and starts elastically deforming after the elastic member has elastically deformed by a certain amount or more is used. It is possible to absorb the impact sound.

Further, as a damping mechanism, a plate-shaped spring portion arranged in the central portion in the longitudinal direction on the elastic member side of the base plate, and curved in a convex shape toward the elastic member side; A plate-shaped damping portion that contacts the longitudinal end portion of the elastic member and biases the elastic member in the elastic deformation direction; It is possible to absorb a wide range of impact sounds with a simple structure by using a material that starts to elastically deform when contacted.

[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. 1, FIG. 3 is a plan view of a buffer mechanism, and FIG. 4 is of FIG. FIG. 5 is an enlarged sectional view of an essential part, FIGS. 5 and 6 are views corresponding to FIG. 4 showing a modification of the first embodiment, FIG. 7 is a plan view of FIG. 6, and FIG. FIG. 9 is a side view of FIG. 8, FIG. 10 is a side view of FIG. 8 showing a third embodiment of the present invention, and FIG. 11 is a side view of FIG. FIG. 12 is a view corresponding to FIG. 8 showing a fourth embodiment of the present invention, FIG. 13 is a view corresponding to FIG. 8 showing a fifth embodiment of the present invention, and FIG. 14 is a sixth embodiment of the present invention. An example corresponding to FIG. 8, FIG. 15 is an equivalent view of FIG. 8 showing a seventh embodiment of the present invention, FIG. 16 is a plan view of the base plate shown in FIG. 15, and FIG. XV II-XV II line sectional view, FIG. 18 is an enlarged view of XV III portion in FIG. 17, FIG. X IX-X of FIG. 17
FIG. 20 is an enlarged sectional view taken along line IX, and is equivalent to FIG. 8 showing an eighth embodiment of the present invention. 1: Daihiki, 2: joist 3,63: base plate 4,54: elastic member 5,15,25,35B, 45B, 85B: damping mechanism 6,16,26,36,46: support member 7: opening, 8: Protrusion 16a: Hook part 17,27,37,47: Spring 35A, 45A, 65A: Support mechanism 54a: First leaf spring, 54b: Second leaf spring 73,86: Spring portion, 74,87: Damping portion 75, 88: bent part, 89: cover

Claims (7)

[Claims] 1. A sound insulation floor device for absorbing shock vibration noise by a shock absorbing mechanism interposed between a floor base material and a floor lower surface material, wherein the shock absorbing mechanism is arranged on a base plate; A plate-like elastic member that is convexly curved toward the side opposite to the base plate; a support mechanism that supports this elastic member on the base plate elastically deformable; and a damping mechanism that provides resistance to the elastic return operation of the elastic member. A sound insulation floor device. 2. The support mechanism includes: a support member having one end fixed to a base plate; an opening provided at an end of the elastic member in the longitudinal direction and into which a free end of the support member is inserted; The sound insulation according to claim 1, wherein the mechanism is provided on at least one of upper and lower surfaces of the support member, and includes a plurality of protrusions with which an edge of the opening contacts when elastically returning the elastic member. apparatus. 3. A support mechanism comprising: a pair of support members which stand up from both sides of a longitudinal end portion of an elastic member from a base plate and have a hook portion which bends inward at a tip thereof; And a spring, the damping mechanism being provided at the end of the elastic member in the longitudinal direction, and having a plurality of protrusions with which the hook portion comes into contact when the elastic member returns to the elastic state. Sound insulation floor device described. 4. The support mechanism includes a support member that surrounds the upper end and both sides of the longitudinal end of the elastic member in a gate shape; and a spring that connects the support member to the base plate; and the damping mechanism is elastic. The sound insulation floor device according to claim 1, further comprising a plurality of protrusions provided at end portions in the longitudinal direction of the member, with which the supporting member comes into contact when the elastic member elastically returns. 5. The damping mechanism comprises a spring member for urging the elastic member in the elastic deformation direction.
Sound insulation floor device described. 6. The elastic member comprises a plate-shaped second elastic member which is attached to a central portion in the longitudinal direction of the inner surface of the elastic member and which starts elastically deforming after the elastic member has elastically deformed a certain amount or more. The sound insulation floor device according to claim 1, 2, 3, 4, or 5. 7. The damping mechanism includes a plate-shaped spring portion which is arranged at a central portion in a longitudinal direction of a surface of the base plate on the elastic member side, and which is convexly curved toward the elastic member; A plate-shaped attenuating portion which is extended and whose tip contacts the longitudinal end of the elastic member to urge the elastic member in the elastic deformation direction;
The sound insulation floor device according to claim 1, wherein the spring portion is adapted to start elastically deforming due to contact with the elastic member after the elastic member elastically deforms by a certain amount or more.