JP2005139786A - Double floor material, floor panel for double floor material and method of manufacturing floor panel for double floor material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To set a connecting interval between floor panels regardless of an inner bailey dimension of a grating spot of a grating-like rib of the floor panels, by supporting a floor panel intermediate part by one kind of support leg, and performing the connection/ support between the floor panels. <P>SOLUTION: Projections 110, 110 are arranged in positions corresponding to the four corners of a square grating spot 220 of the floor panel 2 on a support plate 11 of a floor panel support leg, and are formed in the shape of performing positioning by fitting an outside part 1101 to the corner 2201 of rib crossing parts of the four corners to the center of four projections of the respective projections 4, and are similarly formed in the shape of performing positioning by fitting an inside part 1102 of the respective projections to the inside of the respective right-angled corners 2211 of the four corners of outer peripheral ribs 221 for performing the cross-shaped crossing connection of the floor panel. On the connecting flor panel side, when an interval between the outer peripheral ribs is set to L, and the thickness of the ribs is set to (t), an interval (b) between opposed inside parts of the four projections is substantially set to (L+2t). <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to a component member of a double floor in which a floor panel is disposed on a floor foundation via a space.

In the western floor structure of an apartment house such as an office or an apartment, a space may be provided between the floor foundation surface and the floor surface to form a double floor, and electrical wiring and piping may be provided in the space.
In order to construct such a double floor, it is necessary to support the floor panel at a predetermined height from the floor foundation surface and to connect the floor panels, and the members used for these constructions must be shared. This is advantageous in terms of member management and cost.
Conventionally, it is publicly known that the intermediate support of the floor panel and the cross-shaped cross connection of the floor panel are performed by a common member (see Patent Document 1).

JP-A-7-233614

In this Patent Document 1, as shown in FIG.
1x and 11x are arranged in a symmetrical manner with the parallel pieces 11y and 11y sandwiching the y-axis, and the x-axis parallel pieces 11
Using a support leg provided with a 45 ° -insertion piece 11z between the x and y-axis side-by-side piece 11y, as shown by A in FIG. By aligning the center of the support leg and fitting the grid-like ribs 22x and 22y of the floor panel between the parallel pieces 11x and 11x and between the parallel pieces 11y and 11y, the middle of the back surface of the floor panel is supported. (B) of FIG.
As shown by B, the corner corner 22z of the outer peripheral rib of the floor panel is connected to the side piece 11y of the supporting leg.
It is disclosed that the floor panel cruciform intersection is connected and supported by holding it with the insertion piece 11z and the parallel piece 11x.

In B of FIG. 5B, the interval L between the floor panels that can be connected (the interval between the outer peripheral ribs) L is first regulated by the outer width of the parallel pieces. To increase the distance L, the parallel pieces 11x, 11x, 11
It is necessary to increase the thickness of y, 11y. If this thickness is increased, the insertion piece 11z is shifted in the radial direction r, and the parallel pieces 11x, 11x, 11y, 11y are moved to the ± x axis along with the shift in the r direction. It is necessary to shift in the direction away from the direction, ± y-axis direction. Therefore, at the position where the side-by-side pieces interfere with the cross-shaped intersections of the ribs of the floor panel, even if the support legs can be fitted in the middle of the back surface of the floor panel, the cross connection of the floor panels becomes impossible. Further, in A of FIG. 5B, at the position where the insertion piece 11z interferes with the cross-shaped intersection of the floor panel ribs, even if the cross-connection of the floor panels is possible, The support legs cannot be fitted. Furthermore, there is a need for circular ribs that are not directly related to floor panel strength, which not only facilitates the interference, but also weight /
There is also a problem that the material is bulky.

Generally speaking, the interference described above is shown in FIG. 6 (A) when the inner dimensions of the grids of the grid ribs of the floor panel do not match the spacing between the outer grid ribs of the floor panel to be connected. When the arrangement of the projections 110 'for fitting the support legs is set so as to enable the connection between the floor panels as shown in Fig. A, as shown in B of the same figure, Mating is impossible,
As shown in B of FIG. 6B, the support legs can be fitted to the middle of the back surface of the floor panel.
If the arrangement of the protrusions for fitting the support legs is set, the floor panels cannot be satisfactorily connected (raised) as shown in A of FIG.

The object of the present invention is to support the middle of floor panels and to connect / support between floor panels with a single type of support leg member, and between floor panels regardless of the inner dimensions of the grids of the grid ribs of the floor panels. It is to be able to set the connection interval.

The double flooring according to claim 1 is a floor panel having a grid-like rib on the back surface of a rectangular top plate, and the support plate is fitted to the rib grid of the floor panel, or the floor panel has a cruciform intersection It consists of a common floor panel support leg that is connected or the floor panel side is connected, and the support plate of the floor panel support leg is provided with protrusions at positions corresponding to the four corners of the square lattice of the floor panel. The outer part of the four protrusions of each protrusion is fitted to the corners of the rib intersections at the four corners so that positioning is performed, and the inner part of each protrusion is also a cross-shaped intersection of the floor panel. The shape is such that positioning is performed by fitting inside the right-angle corners at the four corners of the outer peripheral rib to be connected, and the interval between the outer peripheral ribs on the floor panel side to be connected is L, and the thickness of the rib is t. Opposite four protrusions Characterized in that it is that the distance b is approximately between the inner region (L + 2t).

The double flooring according to claim 2 is the double flooring according to claim 1, wherein the outer wall surrounding one protrusion is a square, and an interval of one side length c of the square is provided inside the outer peripheral rib of the floor panel. Auxiliary ribs are provided both in the horizontal direction and in the vertical direction, and auxiliary lattices having an inner dimension of c × c are provided at the four corners of the outer peripheral rib.

The double flooring according to claim 3 is characterized in that, in the double flooring of claim 1 or 2, an auxiliary projection is provided at the center of the four projections of the support plate of the floor panel support leg.

The double flooring according to claim 4 is the double flooring according to claim 3, wherein auxiliary ribs in contact with the rib lattice are provided on the top plate portion in the rib lattice of the floor panel, and the height of the auxiliary rib T ₂ is characterized in that T ₂ <T ₁ −T ₃ with respect to the height T ₁ of the lattice-shaped rib and the height T ₃ of the auxiliary protrusion.
The double flooring according to claim 5 is characterized in that, in the double flooring according to claim 4, the auxiliary ribs are provided so as to connect the apexes facing each other of the lattice.

The double flooring according to claim 6 is characterized in that, in the double flooring according to claim 4 or 5, the height of the auxiliary ribs is increased to reach the center in the rib lattice of the floor panel. .

The double flooring according to claim 7 is characterized in that, in the double flooring according to any one of claims 1 to 6, the grid-like ribs of the floor panel are made thinner from the root to the tip.

A floor panel for double flooring according to an eighth aspect is a floor panel in the double flooring according to any one of the first to seventh aspects, and is made of a mixture of a thermoplastic resin and wood waste.

Claim 9 is a method for producing a floor panel for double flooring according to claim 8, wherein the thermoplastic resin and the wood waste are stirred at high speed to melt the thermoplastic resin, and both materials are mixed, and the mixture is pressed. It is characterized by molding and shaping.

As is clear from FIG. 1-2, the distance b between the outer ribs of the floor panel to be connected to the distance b between the inner portions of the four protrusions provided on the support plate of the floor panel support leg and the rib thickness t. And b =
The relationship L + 2t is established. Further, as is apparent from FIGS. 1-3, the distance a between the outer portions of the four protrusions is equal to the dimension width w in the lattice of the ribs of the floor panel. a> b between a and b
There is only a relationship. Accordingly, the interval L can be freely set between (w−2t) and 0.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The figure shows a floor panel and floor panel support legs according to claims 1 and 2.
1-1 (a) is a top view of the floor panel support leg, and (b) of FIG. 1-1 is a side view of the floor panel support leg.
FIG. 1-2 shows a rear view of the floor panel, and a grid-like rib 22 is provided on the rear surface of the top plate 21.
FIG. 1-3 shows a state in which the support plate 11 of the floor panel support leg is fitted to the back surface of the floor panel 2 and the support plate 1.
1 shows a cross-like cross connection state of floor panels and a connection state (upper right) between floor panel sides.
As shown in FIGS. 1-1 and 1-3, the support plate 11 of the floor panel support leg 1 has protrusions 110, 110 at positions corresponding to the four corners of the square lattice 220 of the grid-like ribs 22 of the floor panel. As shown in FIG. 1-3, the outer portion 1101 is fitted to the rib crossing corner 2201 of the rib lattice 220 of the lattice rib 22 of the floor panel 2 as shown in FIG. As shown in the upper right of FIG. 1-3, the portions 1102 inside the projections 110 are fitted into the right corners 2211 at the four corners of the outer peripheral rib 221 of the floor panel 2. .

The outer shape of each of the projections 110 is a square having a dimension c × c, and in order to make the fitting inside the right-angle corners of the four corners of the outer peripheral rib of the floor panel at the inner portion of each projection described above, Fig.1-
2, auxiliary ribs 221x and 221y are attached to the inner side of the outer peripheral rib 221 of the floor panel 2 with an interval of the length c of one side of the square dimension c × c in both the horizontal direction and the vertical direction. Auxiliary lattices 2210 having an inner dimension c × c are provided at the four corners of the outer peripheral rib 221.
As is clear from FIG. 1-2, the interval L between the outer peripheral ribs of the floor panels to be connected, and the rib thickness t.
, L = between the interval b between the opposite inner portions 1102 of the protrusions 110 of the floor panel support leg 1
As shown in FIG. 1-3, the dimension a × a of the rectangular outline surrounding the four protrusions 110, 110 is within the lattice 220 of the lattice-like rib 22 of the floor panel 2. The relation is equal to the outline size. There is only a> b relationship between a and b. Accordingly, the interval L is set to (w-2t) to 0 [when the panel top plate protrudes ΔL from the outer peripheral rib, (w-2t
) To ΔL].

In the above embodiment, each of the four protrusions of the floor panel support leg is square, but the outer part of the protrusion is fitted to the rib intersection corner of the lattice rib of the floor panel, and the inner part of the protrusion is It is only necessary to be fitted to the right-angle corner of the outer peripheral rib of the floor panel, and even if a part is cut off as shown in FIGS. Joint and inner part 11
If the fitting allowance of 02 can be sufficiently retained, the partial cutout is allowed.
FIGS. 2-2 (a) and (b) respectively show the fitting state of the floor panel support leg to the middle of the floor panel and the cross-shaped cross connection state of the floor panel by the floor panel support leg.

In the above embodiment, as shown in the upper right part of FIG.
In order to fit tightly inside 11, auxiliary grids indicated by 2210 in FIG. 1-2 are provided, but auxiliary projections on the support plate 11 side of the floor panel support legs as shown in FIG. 111,
The auxiliary ribs 111 and 111 and the inner portions 1102 of the four protrusions 110 and 110 may hold the outer peripheral rib 221 of the floor panel 2.

In the above-described embodiment, the outer portions of the four protrusions of the floor panel support leg are fitted to the inner corners of the lattice ribs of the floor panel. However, as shown in FIG. 220
It is also possible to adopt a shape that fits into a corner other than the inner corner 2201 at the rib intersection, for example, 2201 ′.

(A) in FIG. 3-1 is a top view of a floor panel support leg used in the double flooring according to claim 3, and (b) in FIG. 3-1 is a side view of the floor panel support leg. Four protrusions 110 of the support plate,
A central protrusion 1100 is provided at the center of .about.110. The cross-sectional shape of the central protrusion 1100 is preferably left / right / up / down symmetrical. For example, the cross section is preferably circular or square.

FIGS. 3-2 (a) and (b) show the side connection state and the cross-like cross connection state of the floor panel by the floor panel support legs, and the cross-sectional shape of the central protrusion 1100 is a square shape. The width d is set to satisfy (b−d) / 2≈t, where b is the distance between the inner portions of the four protrusions 110 and t is the thickness of the ribs of the floor panel. Therefore, when connecting the floor panels, even if the auxiliary grids of the floor panels and the auxiliary projections of the floor panel support legs are omitted, the outer peripheral ribs of the floor panel are held between the central projections and the four projections to play between them. The shakiness at the time of use can be eliminated.

FIG. 4-1 shows an embodiment of a double flooring according to claim 4.
FIG. 4A shows a grid 220 of the grid-like ribs 22 of the floor panel 2, and auxiliary ribs having a pattern that does not overlap the four protrusions 110, 110 of the support plate of the floor panel support leg shown by dotted lines. 2
210 is provided on the top plate portion 210 in the lattice 220.
The floor panel is made of a wood waste mixed thermoplastic resin, which will be described later, and the thickness of the top panel of the floor panel is 5 mm.
In the following cases, the length of one side of the square rib lattice is limited to about 15 times the thickness of the top plate, and if the lattice size is larger than this, the top plate may be stepped over. However, by providing the auxiliary rib 2210, the lattice size can be increased by 30 times or more. Therefore, it is possible to reduce the cost of manufacturing the floor panel and improve the workability by reducing the number of floor panel support legs installed.

(B) of FIG. 4-1 shows the dimensional relationship between the support plate of the floor panel support leg and the rib lattice of the floor panel in the double flooring according to claim 4, and the central protrusion of the support plate of the floor panel support leg. When the height of 1100 is T ₂ , the height of the auxiliary ribs 2210 of the floor panel top is T ₃ , and the height of the grid-like ribs 22 of the floor panel is T ₁ , (T ₂ + T ₃ ) <T ₁ is established. ing. Accordingly, the grid-like ribs of the floor panel are supported on the support plate of the floor panel support leg, and the floor panel support area by the floor panel support leg is guaranteed and the floor panel support state can be stabilized.
According to the fifth aspect, the auxiliary rib 2210 can be formed so as to connect the opposite apexes of the rib lattice 220 as shown in FIG. In this auxiliary rib, since the lattice-like rib 22 and the auxiliary rib 2210 form a triangle, it becomes more difficult to be deformed with respect to stress during molding or load. In this case, the auxiliary rib 2210 and the four protrusions 110, 110 overlap vertically.
The height T ₃ of the auxiliary ribs 2210 of the floor panel top plate, the height T ₁ of the grid-like ribs 22 of the floor panel, and the height T ₂₀ of the protrusions 110 have a relationship of (T ₂₀ + T ₃ ) <T _1. ing.

In the double flooring which concerns on Claim 6, the height of the said auxiliary | assistant rib is made so high that it reaches the center in the rib lattice of a floor panel.
As the top plate in the rib lattice of the floor panel reaches the center, the bending reinforcement effect by the lattice ribs becomes smaller. Therefore, the height of the auxiliary rib increases to reach the center in the rib lattice of the floor panel. If the bending rigidity of the auxiliary rib is increased and the bending reinforcement reinforcement effect by the auxiliary rib is increased toward the portion, the overall bending strength can be improved by making the bending strength uniform. Alternatively, under the same strength, the amount of material can be reduced and the floor panel can be reduced in weight.

In the double flooring which concerns on Claim 7, the grid | lattice-like rib of a floor panel is made thin so that it may reach from a root to a tip. Therefore, when the ribs on the floor panel and the four protrusions on the floor panel support leg are fitted, a gap is interposed at the beginning of the mating, and the mating can be carried out strongly at the end. It is possible to obtain a reliable fixing.

The floor panel for double flooring according to claim 8 is formed from a mixture of thermoplastic resin and wood waste, and is hard to crack due to the wood waste, and in accordance with the compression during the fitting. It deforms well and provides a reliable fit with good workability. Moreover, it is excellent in dimensional stability because of its heat-resistant elasticity.

The floor panel support legs are made of thermoplastic resin, fiber reinforced or the like, and these materials have higher hardness than the mixed material of the thermoplastic resin and wood waste, but the floor panel has an appropriate hardness. Therefore, the fitting can be performed easily and reliably. Therefore, designing the outer part and the inner part of the four protrusions of the floor panel support leg with a plus side tolerance with respect to the fitting, providing the linear protrusion on the outer part and the inner part of the four protrusions of the floor panel support leg, It is possible to bite this into the ribs of the floor panel. Further, if the grid-like ribs of the floor panel are made thinner from the base to the tip as described above, the mold release is facilitated due to the draft, and distortion of the product can be prevented.

As the wood waste, sawn wood, sawdust and other sawn wood, building waste chips and the like can be used, and polyethylene, polypropylene and the like can be used as the thermoplastic resin. The percentage of wood waste is 10-9
It is preferably 0%. If it is less than 10%, the properties of the thermoplastic resin become obvious, and it is difficult to guarantee the excellent strength. If it exceeds 90%, the water absorption becomes high and the durability becomes insufficient.

In the method for producing a floor panel for double flooring according to claim 8, the thermoplastic resin and the wood waste are stirred at high speed to melt the thermoplastic resin, and both materials are mixed, and the mixture is press-molded. ,
The pre-heating step of the thermoplastic resin is not required, and the unmelted resin generates heat preferentially due to friction during high-speed stirring, so that excessive overheating of the wooden material can be eliminated, and the wooden material and the thermoplastic resin can be prevented while preventing the carbonization of the wooden material. Can be mixed homogeneously. It is not necessary to dry the wood material in advance because excess moisture of the wood material is scattered during the stirring. Therefore, a good quality floor panel can be manufactured with a simple manufacturing process.

It is drawing which shows an example of the floor panel support leg of the double flooring which concerns on this invention. It is drawing which shows an example of the floor panel of the double flooring which concerns on this invention. It is drawing which shows the fitting state to the floor panel of the support plate of the floor panel support leg of the double flooring which concerns on this invention. It is drawing which shows the example different from the above of the floor panel support leg of the double flooring which concerns on this invention. It is drawing which shows the fitting state to the floor panel of the support plate of the floor panel support leg of another example same as the above. It is drawing which shows the example different from the above of the floor panel support leg of the double flooring which concerns on this invention. It is drawing which shows the fitting state to the floor panel of the support plate of the example different from the above of the floor panel support leg of the double flooring which concerns on this invention. It is drawing which shows an example of the floor panel support leg of the double flooring of Claim 3. It is drawing which shows the connection state of the floor panel by the support plate of the floor panel support leg of FIGS. It is drawing which shows an example of the double flooring of Claim 4. It is drawing which shows an example of the double flooring of Claim 5. It is drawing which shows the conventional double flooring. It is drawing which shows the double flooring different from the above conventional.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Floor panel support leg 11 Support plate 110 Protrusion 1101 Outer part 1101 Outer part 1100 Projection outer part 1100 Center protrusion 2 Floor panel 21 Top plate 22 Lattice rib 220 Lattice 2201 Right-angle corner 221 at the four corners of the outer circumference Rib 221x Auxiliary rib 221y Auxiliary rib 2210 Auxiliary lattice

Claims (9)

The floor panel having grid-like ribs on the back of the square top plate and the support panel are fitted to the rib grids of the floor panel, or the floor panel is cruciformly cross-connected, or the floor panel side is connected The floor panel support leg support plate is provided with protrusions at positions corresponding to the four corners of the square lattice of the floor panel, with respect to the center of the four protrusions of each protrusion. Right-angle corners at the four corners of the outer peripheral ribs where the outer part is fitted to the corners of the rib intersections at the four corners and positioning is performed, and the inner parts of the projections are similarly cross-linked to the floor panel. The distance between the outer peripheral ribs on the floor panel side to be connected is L, and the thickness of the rib is t, and the distance b between the opposed inner parts of the four protrusions is Almost L + 2t) that there is a double flooring, characterized in. The outer shell that surrounds one protrusion is a square, and auxiliary ribs are provided in both the horizontal and vertical directions inside the outer peripheral rib of the floor panel with an interval of one side length c, and the inner dimensions are at the four corners of the outer peripheral rib. Is c
The double flooring according to claim 1, wherein auxiliary grids of × c are provided. The double flooring according to claim 1 or 2, wherein an auxiliary projection is provided at the center of the four projections of the support plate of the floor panel support leg. Auxiliary ribs in contact with the rib lattice are provided on the top plate portion in the rib lattice of the floor panel, and the height T _{2 of the} auxiliary rib is the height T ₁ of the lattice-shaped rib and the height T _{3 of the} auxiliary protrusion. In contrast, T ₂ <T ₁ −
Double flooring material according to claim 1 to 3, wherein any one, characterized in that there is a T _3. 5. The auxiliary rib is provided so as to connect the apexes facing each other of the lattice.
Double flooring as described. The double flooring according to claim 4 or 5, wherein the height of the auxiliary ribs is increased so as to reach the center of the rib lattice of the floor panel. The double flooring according to any one of claims 1 to 6, wherein the grid-like ribs of the floor panel are made thinner from the root to the tip. A floor panel for double flooring according to any one of claims 1 to 7, wherein the floor panel is made of a mixture of a thermoplastic resin and wood waste. Stir the thermoplastic resin and wood waste at high speed to melt the thermoplastic resin and mix both materials,
The method for producing a floor panel for double flooring according to claim 8, wherein the mixture is formed by press molding.

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