JP3489768B2 - Watertight joint structure of floor panel and packing for watertight joint - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a watertight joint structure for floor panels laid on balconies, terraces and the like, and a packing for the watertight joint.

[0002]

2. Description of the Related Art Since it rains on balconies and terraces, excellent watertightness is required for joining floor panels laid there. To meet these demands,
For example, a joint structure of floor panels disclosed in Japanese Utility Model Publication No. 61-161345 has been devised.

This joining structure, as shown in FIG. 9, is an L-shaped receiving plate 10 formed at the end of one floor panel 100A.
1A and an L-shaped holding plate 102B formed at the end of the other floor panel 100B, a waterproof packing 103 is interposed, and a receiving plate 101A, a waterproof packing 103, and the holding plate 1 are provided.
The blind rivet 104 is inserted into the 02B and fastened, and the joint material 105 is filled between both floor panels.

[0004]

However, in the above-mentioned joining structure, the blind rivet 104 and the backing plate 10 are used.
The joint material 105 and the floor panels 100A and 100B are inserted through the 1A, the waterproof packing 103, and the holding plate 102B.
There was a possibility that rainwater that had entered through the minute gap between and leaked out through the rivet insertion hole, and it was difficult to say that the watertightness was sufficient.

The present invention has been made in view of the above, and an object of the present invention is to provide a watertight joint structure of a floor panel without fear of rain leakage, and a packing for the watertight joint.

[0006]

In order to achieve the above object, a watertight joint structure for a floor panel according to the present invention has a structure in which the holding edge of one floor panel is overlapped with the supporting edge of the other floor panel. In the structure that joins the panels, a bottomed screw hole is formed in the support edge, and a groove is formed in the tip side of the screw hole of the support edge. A watertight joint packing having a substantially U-shaped cross section in which an outer layer made of a flexible rubber foam and an inner layer made of a non-foamed rubber harder than this are laminated and integrated to form a watertight joint. It is characterized in that it is attached to the outer surface and fitted into the groove, and a screw is screwed into the screw hole from the through hole of the pressing edge to fasten the supporting edge and the pressing edge. .

The watertight joint packing for a floor panel according to the present invention has a substantially U-shaped cross section as described above , and
It is attached to the ridge formed on the back of the edge of the floor panel
Fit into the groove formed in the supporting edge of the other floor panel.
A packing which is characterized in that the outer layer of soft rubber foam, and the inner layer made of a rubber non-foamed rigid which is obtained integrally laminated. It is desirable that the packing for water-tight joining has an outer layer made of an ethylene-propylene rubber foam having a foaming ratio of 1.1 to 3.0 times and an inner layer made of a non-foamed ethylene-propylene rubber. It is desirable to form convex ribs extending in the length direction on the outer bottom surface of the outer layer.

In the watertight joint structure of the present invention, a screw is inserted into the bottomed screw hole of the support edge from the through hole of the press edge so as to fasten the support edge and the press edge together. Even if rainwater enters through the clearance between the through hole and the screw, it does not leak from the bottomed screw hole. Then, a watertight joining packing having a substantially U-shaped cross section, which is attached to the convex strip on the back surface of the pressing edge, is fitted into the groove formed in the tip side of the screw hole of the supporting edge,
Since the flexible outer layer of the packing is brought into close contact with the inner surface of the groove by the above-mentioned fastening, rainwater that has entered from the through hole of the holding edge passes between the holding edge and the supporting edge, and Even if it permeates toward the tip, the watertight joint packing prevents the permeation of rainwater. Therefore, this watertight joint structure has no risk of water leakage.

In this case, if the entire packing is made of non-foaming and relatively hard rubber, or if the entire packing is made of a flexible rubber foam, a satisfactory water blocking effect cannot be exhibited. That is, since the supporting edge and the pressing edge for joining the floor panel are bent and formed so as to rise from the panel bottom plate to the panel side plate at a substantially right angle, the concave groove formed at this supporting edge is also at a substantially right angle. Although it is bent,
When a packing made of relatively hard rubber and having a substantially U-shaped cross section is bent at a substantially right angle along the bent portion of such a groove,
The packing is deformed so as to open on both sides, and becomes a wrinkled state such as wrinkles in the concave groove, and a gap is created between the packing and the inner surface of the concave groove, and even if it is strongly pressed to eliminate the gap, Since the packing made of relatively hard rubber is difficult to be compressed and deformed, it is difficult to eliminate the gap, and it is impossible to exhibit satisfactory watertightness. On the other hand, the packing, which is entirely made of flexible rubber foam, is deformed to open on both sides at the bent part of the concave groove, and even if it becomes a wrinkle like a wrinkle, it will be compressed and pushed into the gap. However, such a flexible packing has a weak waist and inferior shape retention, and it cannot be attached straight so that it does not twist or meander with respect to the ridge of the presser edge. If the packing does not fit well in the groove and the packing deteriorates with time, a gap is partially formed and the watertightness deteriorates.

On the other hand, in the watertight joint packing of the present invention, since the outer layer is formed of the flexible rubber foam, it is deformed to open on both sides at the bent portion of the concave groove and wrinkled. Even in the meandering state, when pushed hard, the outer layer is easily compressed and the gap is crushed, and the inner layer is in close contact with the inner surface of the groove, so that the watertightness is improved. Moreover, since the inner layer of the packing of the present invention is made of a non-foamed rubber that is harder than the outer layer of the rubber foam, it has good elasticity and good shape retention, and has a good elasticity against the ridges of the pressing edge. Since it can be applied straight so that it does not twist or meander, it fits well in the concave groove, and there is almost no risk of creating a gap even if the packing deteriorates over time, so excellent watertightness can be maintained .

In particular, a watertight joint packing in which the outer layer is made of ethylene-propylene rubber foam having a foaming ratio of 1.1 to 3.0 times and the inner layer is made of non-foamed ethylene-propylene rubber is used for the inner layer. Strength and good shape retention,
Since the outer layer has a good balance with the flexibility, the watertightness is further improved, and the packing in which the convex rib extending in the lengthwise direction is formed on the outer bottom surface of the outer layer has a concave groove inner surface when the convex rib is compressed. The water tightness is further improved because it can be strongly and closely attached to.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view showing an embodiment of a watertight joint structure for a floor panel according to the present invention, FIG. 2 is a sectional view taken along line XX of FIG. 1, and FIG. 3 is an enlarged view of a circle in FIG. 4 is an enlarged view of a circle in FIG. 1, FIG. 5 is an enlarged cut end view taken along line YY of FIG. 1, FIG. 6 is a sectional view showing an embodiment of a watertight joint packing according to the present invention, and FIG. FIG. 8 is a perspective view of the packing, and FIG. 8 is a sectional view showing another embodiment of the watertight joining packing according to the present invention.

The floor panels 1A and 1B used in the embodiments shown in FIGS. 1 to 5 are both large-sized panels integrally molded with a molding material such as SMC (sheet molding compound) and have high strength and heat resistance. Since it has a low expansion coefficient, it is difficult for it to expand and contract and deform due to its radiant heat even when exposed to direct sunlight.

In one floor panel 1A, side plates 4 are erected at the right end and front and rear ends of the bottom plate 2, and a pressing edge 3 is formed from the left end of the bottom plate 2 to the left ends of the front and rear side plates 4.
A drain gutter 5 is formed along the front end of the bottom plate 2,
Drain outlets 6, which connect solid gutters (not shown) to both ends of the gutter 5.
6 is formed. Further, on the surface of the bottom plate 2, a large number of drainage grooves 7 also serving as a slip stopper are formed in the vertical and diagonal directions, so that the floor panel 1A is enhanced in aesthetic appearance. Furthermore,
A large number of support legs 8 are provided on the back surface of the bottom plate 2 so that the bottom plate 2 does not bend even if a load is applied to the bottom plate 2.

The other floor panel 1B is the above floor panel 1 except that a support edge 9 (see FIGS. 2 and 3) is formed from the right end of the bottom plate 2 to the right ends of the front and rear side plates 4.
It is configured to be bilaterally symmetrical to A. And
The above-mentioned pressing edge 3 is superposed on this supporting edge 9 and is tightened with screws 14 as described later, so that both floor panels 1A,
1B is joined.

The detailed structure of this joint is as shown in FIG. That is, the supporting edge 9 of the floor panel 1B has a thickened portion 10 at its screwed portion, and a screw hole member 11 is embedded in the thickened portion 10 to form a bottomed screw hole 12. There is. The screw hole member 11 is a bottomed brass tube body having a thread groove formed on the inner peripheral surface and the outer peripheral surface. The screw hole member 11 cannot be pulled out by screwing the outer peripheral surface into an embedded hole formed in a supporting edge. It is fixed and the screw hole 12 is formed. A bottomed screw hole 12 by embedding such a screw hole member 11
Are formed at intervals in the longitudinal direction of the support edge 9.

On the other hand, the holding edge 3 of the floor panel 1A is provided with a through hole 13 at a position corresponding to the screw hole 12, and a screw 14 made of SUS is provided through the through hole 13 to the screw hole 12 of the support edge 9. The holding edge 3 and the supporting edge 9 are fastened by being screwed into. The head of the screw 14 is embedded in a counterbore hole 15 formed on the upper surface of the pressing edge 3, and is covered by a lid 16 fitted in the counterbore hole 15 so as not to be seen from the outside. ing. The lid 16 is preferably made of AES resin or the like having good weather resistance.

The supporting edge 9 is formed with a groove 17 at the tip side of the screw hole 12 and a small groove 18 at the opposite side of the screw hole 12. This groove 17
Is a large square groove having a large depth and a large width, and as shown in FIG. 5, it is bent at a substantially right angle at the portion rising along the front and rear panel side plates 4. Then, as shown in FIG.
Is formed on the back surface of the pressing edge 3, and the watertight joint packing 19 of the present invention is adhered to the outer surface of the projection 23 via an adhesive and fitted into the groove 17. ing.
Support legs 8 are formed on the back surface of the groove 17 so that the pressing edge 3 and the supporting edge 9 do not bend downward when a load is applied. In addition, the auxiliary packing 2 is provided in the small groove 18.
0 is fitted.

The watertight joint packing 19 is a packing having a substantially U-shaped cross section as shown in FIGS. 6 and 7.
An outer layer 19a made of a flexible rubber foam and an inner layer 19b made of harder non-foamed rubber are laminated and integrated, and the outer bottom surface of the outer layer 19a has a substantially semicircular cross section extending in the longitudinal direction. Convex ribs 19c are formed. The outer layer 19a is formed with bulging portions 19d, 19d that are slightly bulged outward at the corners on both sides of the lower end. The convex ribs 19c and the bulging portions 19d are formed to further increase the pressure contact force with respect to the inner surface of the concave groove 17, as described later. Two convex ribs 19c may be formed on the outer bottom surface of the outer layer 19a as shown in FIG. 8, or three or more convex ribs 19c may be formed in some cases.

Various flexible rubber foams can be used as the outer layer 19a. Among them, the ethylene-propylene rubber foam having an expansion ratio of 1.1 to 3.0 times has appropriate flexibility and is compressed and deformed. This is suitable because it adheres well to the inner surface of the concave groove 17, and in particular, the expansion ratio is 1.3 to 2.
An ethylene-propylene rubber foam of 0 is optimal. Although various non-foamed rubbers can be used for the inner layer 19b,
Of these, ethylene-propylene rubber is particularly preferable because it has an appropriate hardness and can impart good shape retention and waist strength to the packing. The thickness ratio of the outer layer 19a and the inner layer 19b is preferably set to about 3: 1 to 3: 2,
If the ratio of the inner layer 19b becomes smaller than this, the packing 19
When the ratio of the outer layer 19a is larger than this, the rigidity of the packing 19 is lowered, and in any case, it becomes difficult to remarkably improve the watertightness.

When such a watertight joint packing 19 is attached to the convex strip 23 of the pressing edge 3 and fitted into the concave groove 17 of the supporting edge 9, the packing 19 is bent on both sides at the bent portion of the concave groove 17. Even if the outer layer 19a is made of a flexible rubber foam even if it is deformed to open and becomes a wrinkle-like meandering state (folded state), if the packing 19 is strongly pressed by the ridge 23, 19a is easily compressed, the gap between the inner surface of the concave groove 17 and the outer layer 19a is crushed, and the inner surface of the concave groove 17 is brought into close contact with the inner surface of the concave groove 17 to improve watertightness. In particular, the packing 19 of this embodiment
Then, the convex rib 19c and the bulging portion 19 formed on the outer layer 19a are formed.
As shown in FIG. 3, d is strongly compressed, and due to its resilience, it strongly presses against the inner surface of the groove 17, so that the watertightness is remarkably improved. Moreover, since the inner layer 19b of the packing 19 is made of a non-foamed rubber that is harder than the outer layer of the rubber foam, the packing 19 is strong and has a good shape-retaining property. Since it can be applied straight so that it does not twist or meander, it fits well in the recessed groove 17, and there is no risk of partial gaps even if the packing deteriorates over time. You can maintain sex.

On the other hand, the auxiliary packing 20 fitted in the small groove 18 and having a small circular cross section prevents rainwater from infiltrating from the tip side of the holding edge 3 by a capillary phenomenon, and is flexible and familiar. A packing made of nitrile rubber, which has good properties, is preferably used.

The small groove 18 is a raised portion 25 of the support edge 9.
Voids 26 and 27 that do not cause a capillary phenomenon are formed between the holding edge 3 and the supporting edge 9 on both sides of the raised portion 25. When such a void portion is formed, rainwater that enters from the tip side of the pressing edge 3 by the capillary phenomenon can be stopped in one void portion 26, so that rainwater penetrates beyond the auxiliary packing 20. Even in such a case, since the water can be stopped in the other void 27, it is possible to more reliably prevent the rainwater from entering due to the capillary phenomenon.

In addition, at the screwed portion located approximately in the middle of the watertight joining packing 19 and the auxiliary packing 20, the strip-shaped foam packing 28 has the pressing edge 3 and the supporting edge 9.
And the screw 14 penetrates through the foam packing 28 and is screwed into the screw hole 12. This foam packing 2
Reference numeral 8 is made of a resin foam such as expanded polyvinyl chloride and is fitted in a shallow groove 29 formed on the back surface of the holding edge 3 in a compressed state. When such a foam packing 28 is interposed, rainwater that enters from between the through hole 13 of the holding edge 3 and the screw 14 is stopped, and rainwater is supplied from the tip side of the holding edge 3 to the auxiliary packing 20. Since water is stopped by the foam packing 28 even if it invades beyond the area, the watertightness is further improved. The cushioning effect of the foam packing 28 can also prevent the noise of the pressing edge 3 and the supporting edge 9 rubbing during walking.

As shown in FIG. 4, the joining portions of the rising walls 4 and 4 of the floor panels 1A and 1B are such that the holding edge 3 is overlapped with the inside of the supporting edge 9 and the supporting edge 9 is screwed. Without holes,
The holding edge 3 and the supporting edge 9 are not fastened with screws. Since the other configurations are substantially the same as the above, the same members are designated by the same reference numerals and the description thereof will be omitted. Incidentally, 30 is a flange at the upper end of the rising wall 4.

In the floor panel joint structure as described above, rainwater, which mainly enters by capillarity from the tip end side of the pressing edge 3, is stopped by the auxiliary packing 20 and the voids 26 and 27, and even if it does, it enters. Even if this happens, the water is stopped by the foam packing 28. Rainwater that enters through the gap between the screw 14 and the through hole 13 is also stopped by the foam packing 28.
Even if it intrudes, the screw hole 12 has a bottom so that it does not leak from the screw hole 12, and even if rainwater penetrates into the tip side of the support edge 9, it is used for watertight joining. Water is stopped by the packing 19. In particular, the watertight joining packing 19 is well-fitted in the groove 17 as described above, and the outer layer 19a is in close contact with the inner surface of the groove 17, and the watertightness is excellent. The joint structure has no risk of water leakage.

The floor panel joining structure can be joined by a simple operation in which the supporting edge 9 and the pressing edge 3 are fastened with the screws 14 and the lid 16 is fitted into the counterbore 15. Since the head of the screw 14 is not exposed, the appearance is good, there is no danger of a pedestrian tripping, and the foam packing 28
Thus, the noise of rubbing between the pressing edge 3 and the supporting edge 9 can be prevented.

[0029]

As is apparent from the above description, the watertight joint structure for floor panels according to the present invention has an effect that the joining work is simple and water leakage from the joint portion can be satisfactorily prevented. Since the packing has good adhesion to the inner surface of the groove and good accommodation in the groove, it can exhibit and maintain an excellent water blocking effect.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a watertight joint structure for a floor panel according to the present invention.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is an enlarged view of a circle in FIG.

FIG. 4 is an enlarged view of a circle in FIG.

5 is an enlarged cut end view taken along line YY of FIG. 1. FIG.

FIG. 6 is a cross-sectional view showing an embodiment of a watertight joint packing of the present invention.

FIG. 7 is a perspective view of the packing.

FIG. 8 is a cross-sectional view showing another embodiment of the watertight joining packing of the present invention.

FIG. 9 is a partial cross-sectional view showing a conventional panel joining structure.

[Explanation of symbols]

1A, 1B floor panel 2 Bottom plate 3 Presser edge 4 side plates 9 Support edge 12 Bottomed screw holes 13 through holes 14 screws 17 groove 19 Watertight packing 19a outer layer 19b inner layer 19c convex rib 19d bulge 23 convex stripes

─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-8-93325 (JP, A) JP-A-8-86023 (JP, A) JP-A-6-93777 (JP, A) JP-A-6- 73963 (JP, A) Actually developed 54-50421 (JP, U) Actually developed 7-15930 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) E04F 15/00 E04B 1 / 684 E04F 15/02 E04D 3/00-3/38

Claims (4)

(57) [Claims] 1. In a structure in which a holding edge of one floor panel is overlapped with a supporting edge of the other floor panel to join both floor panels, a bottomed screw hole is formed in the supporting edge, and
A groove is formed on the tip end side of the screw hole of the support edge, and a convex line is formed on the back surface of the holding edge to project into this groove, and the outer layer made of a flexible rubber foam and a harder non- A watertight joint packing having a substantially U-shaped cross section, which is integrally laminated with an inner layer made of foamed rubber, is attached to the outer surface of the ridge and fitted into the groove, and is inserted through the through hole of the pressing edge. A watertight joint structure for a floor panel, characterized in that a supporting edge and a pressing edge are fastened by screwing a screw into the screw hole. 2. One floor panel having a substantially U-shaped cross section.
Is attached to the ridge formed on the back surface of the
An outer layer made of a flexible rubber foam and an inner layer made of a harder non-foamed rubber, which is a packing fitted in a groove formed in a supporting edge of a floor panel. Integrated
A watertight packing for floor panels, which is characterized by being 3. The outer layer is made of ethylene-propylene rubber foam having a foaming ratio of 1.1 to 3.0 times, and the inner layer is made of non-foamed ethylene-propylene rubber. The watertight joint packing described in. 4. The watertight joint packing according to claim 2, wherein a convex rib extending in a length direction is formed on an outer bottom surface of the outer layer.