JPH0565669B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a floating floor structure, and particularly relates to measures to improve soundproofing performance at a place where furniture is placed and at a joist part arranged for underfloor piping. It is something.

(Prior Art) Conventionally, in order to prevent impact noise from the floors of mid-rise or high-rise residential buildings from being transmitted to the lower floors, a cushioning material made of glass wool or the like is placed on the subfloor made of concrete floor slabs, etc. Floating floor structures are being constructed in which floor panels are placed side by side on top of timber. This floating floor structure has the effect that floor impact force is absorbed by the cushioning material and transmission of impact noise to the downstairs is reduced.

On the other hand, in such a floating floor structure, edge joists are placed underground under the floor to stably support the floor near the wall, and the floor panels of the floating floor are placed directly on the joists or connected with rigid connecting materials. The floor surface is formed by In addition, in order to secure space for underfloor piping, instead of making part of the floor a floating floor, a pair of joists are placed facing each other at a predetermined interval on the subfloor surface, and the floor is finished on the joists. Therefore, the space between the joists is also used as a piping space.

(Problem to be Solved by the Invention) By the way, in the part where the joists are arranged on the subfloor as described above, the joists are fixed to the subfloor through elastic materials such as rubber for soundproofing purposes. ,
In order to ensure the support rigidity of the joist material, the elastic material is usually thinner than the cushioning material and is slightly compressed due to the weight of the floor panels and furniture, etc. Due to reasons such as
Poor buffering effect. Therefore, when a floor impact force acts on this joist portion, this impact force is hardly reduced by the elastic material and is transmitted to the subfloor via the joist material, resulting in poor soundproofing properties.

The present invention has been made in view of these points, and the main purpose of the present invention is to improve the soundproofing performance of this joist part when floor impact force is applied by improving the construction condition of the joist material in the joist part as described above. shall be.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a state in which the elastic material interposed between the joist material and the flooring in the joist portion is pulled upward, that is, zero displacement. The joists were constructed with the joists in an upward tensile displacement state (no-load state).

Specifically, the solution taken by the present invention is that a floor panel is disposed on a subfloor made of a concrete floor slab or the like with an impact material made of glass wool or the like interposed therebetween. On the other hand, a joist is fixed to a portion of the above-mentioned subfloor surface via an elastic material. In addition, the part above the floor under the floor specifically corresponds to the wall, under the floor, piping, partition wall, etc., but even in parts other than the above, the part in the center of the floor is used to stabilize the floor. It may be a part of it. The joist material is tightly connected to the floor panel in a state where the elastic material is pulled upward by the reaction force of the impact material below the floor panel.

(Function) Accordingly, in the present invention, when an excitation force is applied to the floor surface on the joist material, the elastic material at the bottom of the joist material is pulled upward and stretched, so that this elastic material It is easily displaced without resistance from the tension state to the no-load state, and then it is compressed.
Therefore, for a small floor impact force, the impact force is mainly received by the impact material in the floating floor area and is alleviated.
It has almost no effect on the joists. In addition, even if there is a large floor impact force that compresses and displaces the elastic material, the reaction force generated by the compressive displacement by the elastic material, in other words, the force transmitted to the flooring will be applied to the cushioning material that has already been compressed and displaced. smaller than Therefore, the transmission of the impact force at the joists to the subfloor can be sufficiently reduced, and the soundproofing performance can be improved.

In addition, even when a load is applied by placing furniture, etc. on the floor surface on the floor joist, the elastic material is displaced from the upwardly stretched state to the no-load state. Since the compressive displacement of the floating floor part itself is alleviated, even if the floating floor part sinks, the soundproofing properties are maintained without reducing the cushioning properties of the elastic body.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

FIGS. 1 and 2 show an embodiment in which the present invention is applied to a joist portion near a wall. In the figure, reference numeral 1 denotes a subfloor made of a concrete floor slab or the like, and a cushioning material 3 made of glass wool, rock wool, foamed synthetic resin, etc. is laid on the part of the subfloor 1 except for the edges of the walls 2. On the cushioning material 3,
A large number of floor panels 4, 4... are arranged side by side to form a floating floor.

On the other hand, an elastic material 5 made of rubber or a spring, which has upper and lower mounting plates 5a and 5b, is attached to the wall 2 of the flooring 1, and the lower mounting plate 5b is attached to the flooring 1 by a nail 6.
A joist material 7 as a border joist is fixedly supported on the upper mounting plate 5a of the elastic member 5 by fastening an adjuster bolt 8 and a nut 9, and the floor panel 4 is fixed by fastening. It is arranged adjacent to the end. Here, before the joist material 7 is combined with the floor panel 4, as shown in FIG. Fixed to be set to a lower level.

As shown in FIG. 1, the upper surface of the joist 7 is connected to the upper surface of the end of the floor panel 4 by a rigid connecting member 10 made of wood, metal shapes, etc., so that the elastic material 5 is pulled upward. It is tied in a stretched state. That is, the rigid connecting material 10 is connected to the joist material 7.
By fixing the top surface and the top surface of the end of the floor panel 4 with nails 11, the elastic material 5 is expanded upward by the reaction force caused by the compression of the impact material 3 based on the level difference h between the top surfaces of the two. ing.

Although not shown, a floor finishing material is appropriately applied to the upper surface of the floor panel 4 so as to extend over the upper surface of the joist 7.

Therefore, in such a floating floor structure, when a floor impact force acts on the floor near the wall, the joist 7 will have rigidity at the end of the floor panel 4 with the elastic material 5 at the bottom being pulled upward. Since the elastic member 5 is tightly connected by the connecting member 10, the floor impact force easily displaces the elastic member 5 from the tensile state to the no-load state without resistance, and after the shift to the no-load state, the elastic member 5 is compressed. From this, it can be seen that for a small floor impact force in which the cushioning material 3 of the floating floor part is compressed and displaced by an amount that is less than the level difference h between the floor panel 4 and the joist material 7, this floor impact force is mainly The shock is relieved by the buffer material 3 and hardly acts on the joists. In addition, in response to a large floor impact force that compresses and displaces the cushioning material 3 by more than the above level difference h, the elastic material 5 in the joist part is compressed and displaced for the first time, but the reaction force generated by this compressive displacement, in other words, The force transmitted to the subfloor 1 is smaller than that of the cushioning material 3, which has already been compressed and displaced. Therefore, the transmission of floor impact force to the floor base 1 via the joists 7 is significantly reduced, and the soundproofing performance of the joists can be improved.
In addition, in the floating floor portion, good soundproofing performance is ensured by the buffering action of the buffer material 3 as before.

FIGS. 3 and 4 show a modification of the above embodiment, in which the floor panel 4 is placed directly on the joist 7. FIG. In this case, as shown in FIG.
By setting the upper surface of the joist 7 to the lower surface of the end of the floor panel 4 with nails 12, etc., the elastic material 5 at the bottom of the joist 7 is pulled upward. This is what I did.

Moreover, FIG. 5 and FIG. 6 show another embodiment, in which a pair of joists 7, 7 are arranged facing each other at a predetermined interval for underfloor piping, and the joists 7, 7 are disposed opposite each other at a predetermined distance. The space 13 is used as a space for laying piping 14. Fig. 5 shows an example in which under-floor piping is installed near the wall 2, and the upper surfaces of both joists 7, 7 are connected to the upper surface of the end of the floor panel 4 by means of rigid connecting members 10 with the respective elastic members 5, 5 being pulled upward. are tied together. Further, FIG. 6 shows an example in which underfloor piping is installed in the center of the floor, and similarly, the upper surfaces of both joists 7, 7 are connected to the floor panels 4, 4 on both sides with the elastic members 5, 5 being pulled upward. It is tightly connected to the upper surface of the end portion by a rigid connecting member 10. In this example as well, the soundproofing performance of the joist portion can be improved. In addition, 15 is piping 1
This is a cushioning material that covers the upper part of 4.

(Effects of the Invention) As explained above, according to the floating floor structure of the present invention, the elastic material at the bottom of the joist near the wall or at the joist portion for underfloor piping is tightly connected to the floor panel while being pulled upward. Therefore, the excitation force acting on the joists is not transmitted to the subfloor until the elastic material is no longer under tension, and the transmission of floor impact force to the subfloor through the joists is significantly reduced. Soundproofing performance can be improved.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the present invention, and FIG. 1 is a cross-sectional view showing the structure near the joist part near the wall, and FIG. 2 is a cross-sectional view showing the state before the joist material and the floor panel are fastened together. . FIGS. 3 and 4 are views corresponding to FIGS. 1 and 2 showing modified examples, respectively. FIG. 5 and FIG. 6 are sectional views showing the structure of the vicinity of the joist portion for underfloor piping as other embodiments, respectively. 1... Floor base, 3... Cushioning material, 4... Floor panel, 5... Elastic material, 7... Joist material, 10... Rigid connection material, 14... Piping.

Claims (1)

[Scope of Claims] 1. A floor panel is provided on a subfloor made of a concrete floor slab or the like through a cushioning material such as glass wool, while a floor panel is provided on a part of the subfloor with an elastic material such as rubber placed between the joists. A floating floor structure characterized in that the joists are fixed and the joist is tightly connected to the floor panel in a state where the elastic material is pulled upward by the reaction force of the cushioning material below the floor panel.