JP2013096155A - Connection structure for floor covering material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connection structure of a floor covering material, capable of suppressing floating and rattling of the floor covering material due to unevenness of an underfloor ground and thermal expansion .SOLUTION: A connection structure of floor covering material is constituted by connecting adjacent rectangular floor covering materials with each other. Each floor connecting material is provided with projected connection pieces and recessed connection pieces on its circumference. Each projected connection piece of each floor covering material is provided with a tenon having a locking piece at its end. Each recessed connection piece of each floor covering material is provided with a dovetail groove which can be engaged with the locking piece of the tenon of the projected connection piece of the adjacent floor covering material so as to communicate in a direction of the floor covering material thickness. The tenon of the projected connection piece of the adjacent floor covering material is loosely fitted in the dovetail groove of the recessed connection piece of one floor covering material, and thereby the recessed connection pieces of one floor covering material and the projected connection pieces of the adjacent floor covering material are connected with each other. Thus, one floor covering material and the adjacent floor covering material are connected with each other. When the recessed connection pieces of one floor covering material and the projected connection pieces of the adjacent floor covering material are connected with each other, the locking piece provided in the dovetail groove of the recessed connection piece of one floor covering material and the locking piece provided in the tenon of the projected connection piece of the adjacent floor covering material are engaged with each other in a freely movable manner in the direction of the floor covering material thickness.

Description

The present invention relates to a connecting structure of floor materials that can suppress floor material floating and rattling caused by unevenness of the floor base surface and thermal expansion and contraction.

As a connection structure of floor materials constituting a floor surface on a floor base surface, for example, in Patent Document 1, a manufacturing error of a floor material or unevenness of a floor base surface is caused by a mortise and a tenon of a connecting piece of adjacent floor materials. A structure for connecting floor materials to each other to be absorbed in the connecting portion is disclosed.
The connecting structure of floor materials disclosed in Patent Document 1 is provided with a long mortise hole in a direction orthogonal to the peripheral portion in a connecting piece provided by protruding from the peripheral portion of the floor material, and the peripheral edge of the connected floor material A split mortise structure projecting downward from the section, and the split mortise slides in the longitudinal direction of the mortise while moving in the longitudinal direction of the mortise and moves in the approaching and separating directions. It is structured.

However, such a flooring connection structure is limited to a movement in a planar direction in which the moving direction of the flooring material is parallel to the connecting direction of the flooring materials, and is laid when a plurality of flooring materials are connected and laid. Corresponds to the flat surface of the floor where there is no raised or loose part of the floor material and the flatness of the floor material is ensured, but it can not be absorbed only by movement in the planar direction which is the connection direction of the floor material There is a problem that it is not possible to cope with such unevenness, that is, when the floor base surface is a curved surface, a large uneven surface, or unevenness where the inclination changes locally or continuously.

Further, Patent Document 2 discloses a floor material connection structure that absorbs unevenness of a floor base surface at a connection part between floor materials and prevents rattling and squeaking noises against treading pressure.
If the floor material connection structure disclosed in Patent Document 2, as a means for connecting adjacent floor materials laid on the floor base surface, a connecting piece is provided protruding from the peripheral edge of the floor material, A configuration in which the peripheral edge of the flooring adjacent to the connecting piece is overlapped or connected, or a connecting piece projecting outward from the peripheral edge of the flooring is provided on the adjacent flooring, and the two connecting pieces are vertically moved It is configured to achieve overlapping connection.

However, since such a connecting structure of flooring is a structure in which the connecting piece absorbs unevenness and deforms, an excessive force is applied to the connecting piece itself, and the connecting piece is easily damaged, or the degree of unevenness Accordingly, it is necessary to design or select an appropriate material, strength, and structure of the connecting piece, and there is a problem that manufacturing management of the flooring material becomes complicated and versatility is lost. In addition, even if the unevenness is absorbed by the connecting piece, if the connecting piece is elastic, the degree of absorption of the unevenness may not be sufficient, and the flooring may be lifted, rattled, etc. is there. Furthermore, even if unevenness is absorbed when laying the flooring material, if the flooring material is subject to thermal expansion and contraction in the environment after the start of use, the thermal expansion and contraction of the flooring material cannot be absorbed by the connecting piece, so There was a problem that may occur.

Japanese Patent No. 4425896 Japanese Patent No. 45799961

An object of this invention is to provide the connection structure of the floor material which can suppress the floating of the floor material by the unevenness | corrugation of a floor ground surface, and thermal expansion and contraction, and rattling.

The present invention is a flooring connection structure in which adjacent rectangular flooring materials are connected to each other, and each flooring material has a convex connection piece and a concave connection piece on the periphery, and the convexity of each flooring material is provided. The mold connecting piece is provided with a tenon having a locking piece at the end, and the concave connecting piece of each flooring can be engaged with the tenon locking piece of the convex connecting piece of the adjacent flooring A dovetail groove having a small locking piece is provided so as to communicate with the thickness direction of the flooring material, and a tenon of the convex connection piece of the adjacent flooring material is provided in the dovetail groove of the concave connection piece of one flooring material. By loosely fitting, the concave connecting piece of one flooring material and the convex connecting piece of the adjacent flooring material are combined, and the one flooring material and the adjacent flooring material are connected to each other. When the concave connecting piece and the convex connecting piece of the adjacent floor material are combined, the locking piece provided in the dovetail of the concave connecting piece of the one floor material and the convex connecting piece of the adjacent floor material In the tenon A locking piece is a connecting structure of the floor member are engaged to be floating in the thickness direction of the flooring.
The present invention is described in detail below.

The present inventors provide a locking piece on each of the tenon of the convex connecting piece and the dovetail groove of the concave connecting piece provided on the periphery of the flooring, and by connecting the convex connecting piece and the concave connecting piece. When connecting adjacent flooring materials, the locking pieces are engaged with each other so as to be freely movable in the thickness direction of the flooring material. The present inventors have found that rattling can be suppressed and have completed the present invention.

In the floor material connection structure of the present invention, the floor material to be connected is not particularly limited. Usually, a floor material body made of a synthetic resin and one or a plurality of decorative materials fixed to the floor material body. Composed.

Specific examples of the material of the floor material include thermoplastic resins such as polypropylene, polyethylene, ethylene-vinyl acetate copolymer (EVA), polyvinyl chloride, acrylonitrile-butadiene-styrene (ABS) resin, and the like. Can be mentioned.
If necessary, a thermal stabilizer, a stabilizing aid, a lubricant, a processing aid, an antioxidant, a light stabilizer, a pigment, a filler, and the like may be added to the thermoplastic resin.

The floor material body is preferably composed of a rectangular frame member and a lattice member extending in a direction parallel to the frame member and / or parallel to a diagonal line of the frame member.
The lattice member is not particularly limited in terms of size, pitch, and the like as long as weight reduction, air permeability, drainage, design, and the like are taken into consideration.

Examples of the material of the decorative material include inorganic fired bodies such as porcelain tiles, wood, synthetic resin, metal, natural stone, and composite materials thereof.

Examples of a method for fixing the decorative material to the floor material body include, for example, an adhesion, fusion, screw fixing method, and a fitting convex portion provided on at least one of the floor material main body and the decorative material, and fitting on the other. The method of fixing by providing a recessed part and fitting is mentioned.

Examples of the adhesive used to bond the decorative material to the floor material body include, for example, an epoxy resin adhesive and other thermosetting resin adhesives, hot melt adhesives, putty, cement, and silicone resin systems. A filler etc. are mentioned.
As said hot-melt-type adhesive agent, what consists of thermoplastic resins, such as EVA and polyamide, is preferable. In addition, when using the above hot-melt type adhesive, a pellet-like or powder-like adhesive material is arranged in advance, and the adhesive is heated centrally with a halogen lamp or the like, or heated with a high-frequency welder. May be.
In addition, it is preferable to use an adhesive having high weather resistance in consideration of outdoor use.

In the floor material connection structure of the present invention, each floor material includes a convex connection piece and a concave connection piece on the periphery, and the concave connection piece of one floor material corresponds to a position corresponding to an adjacent floor material. One flooring and an adjacent flooring are coupled by being coupled to a convex coupling piece provided at a height.
The position, size, interval, and number of the convex connecting piece and the concave connecting piece provided on the periphery of each floor material are not particularly limited, and the connection strength, design property, drainage property, and work when adjacent floor materials are connected to each other. It is designed appropriately in consideration of performance, maintainability, and a connecting margin that absorbs thermal expansion and contraction with respect to the flooring.

The arrangement of the convex connection piece and the concave connection piece provided at the periphery of each flooring is an arrangement in which both the convex connection piece and the concave connection piece are provided on each of the four sides of each flooring. Preferably, it is more preferable that the convex connection pieces and the concave connection pieces are provided alternately and continuously. In any case, when adjacent floor materials are connected to each other, they are arranged so that a pair of convex connection pieces and concave connection pieces are connected to face each other at the periphery of the opposing floor materials.

In the flooring connection structure of the present invention, since the convex connection piece and the concave connection piece are combined, the convex connection piece is provided with a tenon in the connecting direction of the flooring, Dovetail grooves are provided so as to communicate with the thickness direction of the flooring.
A bulging portion is provided at the tip of the tenon, and a slit-like opening is provided in the thickness direction of the floor material at the tip of the dovetail.
The shape of the dovetail in plan view is not particularly limited, but is preferably rectangular, and the shape of the bulging portion is the same as the plan view shape of the dovetail or smaller than the plan view shape of the dovetail, and the floor The width of the bulging portion in the direction parallel to the peripheral edge of the material is formed larger than the size of the opening of the dovetail. This allows the tenon to pass through the dovetail opening while sliding up and down, thereby forming a structure that prevents the convex connecting piece and the concave connecting piece from coming off in the connecting direction between adjacent flooring materials. Can be combined.
At this time, it is preferable that the tenon is provided with a slit that communicates in the thickness direction from the distal end to the proximal end so that the tenon can be opened and closed in a direction orthogonal to the connecting direction. Moreover, it is preferable that the opening can be opened and closed in the direction orthogonal to the connecting direction for the concave connecting piece. The tenon can be opened and closed in a direction orthogonal to the connecting direction, and the opening can be opened and closed in a direction orthogonal to the connecting direction, so that the tenon is elastically press-fitted into the opening and slid up and down. The convex connection piece and the concave connection piece can be easily combined with each other.

When the thickness dimension (X) in the connecting direction of the bulging portion is smaller than the depth dimension (Y) in the connecting direction of the dovetail groove, when the convex connecting piece and the concave connecting piece are combined, It is possible to provide a connecting margin (XY) that absorbs unevenness to the extent that the flatness of the connection between flooring materials can be ensured when laying, and thermal expansion and contraction generated in the flooring material after laying. it can.
The dimension of the connecting margin (XY) is preferably 0.2 mm to 10 mm. If the dimension of the connecting margin (XY) is less than 0.2 mm, the above-described effects of absorbing unevenness and thermal expansion / contraction may not be sufficiently exhibited. When the dimension of the connecting margin (XY) exceeds 10 mm, the interval between the adjacent floor materials becomes too wide, and not only the design property is lowered, but also fingers are sandwiched between the connecting parts, Small articles or the like may fall, and the laying of the flooring material becomes large and unstable. The minimum with a more preferable dimension of the said connection margin (XY) is 0.5 mm, and a more preferable upper limit is 4 mm.

The height of the tenon protruding from the floor material, the shape and size of the bulging portion provided at the tip of the tenon, the shape and size of the dovetail, the size of the opening provided at the tip of the dovetail, etc. Although the shape of the tenon where the bulging portion is formed is not particularly limited, the shape of the tenon in which the bulging portion is formed is preferably T-shaped or inverted L-shaped. The plan view shape of the tenon where the bulging portion is formed is T-shaped or inverted L-shaped, so that the size of the connecting margin can be increased, resulting in unevenness of the floor base and the floor material Can effectively absorb the thermal expansion and contraction.

In the floor material connection structure of the present invention, the tenon of the convex connection piece is connected to the floor material at a position where the tenon of the convex connection piece comes into contact with the opening of the dovetail groove of the concave connection piece. Convex-shaped locking pieces are provided continuously in the direction (that is, the protruding direction of the tenon). Due to the locking piece provided on the tenon, the width of the tenon in the direction perpendicular to the connecting direction is narrower at the portion not having the locking piece.
On the other hand, a convex engagement piece is provided at a position and height at which the tenon engagement piece engages with the opening of the concave connection piece with which the tenon of the convex connection piece abuts. Due to the locking piece provided in the opening, the width of the opening is wide at the portion not having the locking piece.
Accordingly, when the tenon is slid up and down into the dovetail groove while passing through the opening of the dovetail groove, the convex connection piece and the concave connection piece are The provided locking piece is engaged, and the convex connecting piece and the concave connecting piece are combined while forming a retaining structure in the vertical direction in addition to the connecting direction of the flooring materials. Can do.

In the floor material connection structure of the present invention, when the concave connection piece and the convex connection piece between adjacent floor materials are joined, the dovetail locking piece of the concave connection piece of one floor material is adjacent to The tenon engaging piece of the convex connecting piece of the floor material to be engaged is movably engaged in the thickness direction of the floor material. Specifically, the size of the tenon locking piece (the size in the thickness direction of the flooring) and the size of the locking piece of the dovetail groove (the size in the thickness direction of the flooring) are convex connected When the piece and the concave connecting piece are connected, a gap is provided so that each of the locking pieces can be freely moved in the thickness direction of the flooring, or the size is such that it is elastically slidable. . Therefore, while maintaining a structure that prevents the tenon bulge from coming out of the dovetail, the tenon can move moderately in the thickness direction of the flooring, that is, a continuous structure in which the tenon is loosely fitted in the dovetail. , Non-land that can not be absorbed only by movement in the planar direction, which is the connecting direction of the flooring, that is, the floor surface is curved, large uneven surface, uneven or local or continuously changing slope is also effective Can be absorbed.

The size, position, height, and shape of the tenon locking piece and dovetail locking piece are not particularly limited, but the convex connecting piece and the concave connecting piece are joined together so that adjacent flooring materials are When connected, the convex connecting piece and the concave connecting piece form a retaining structure both in the connecting direction and in the vertical direction, while the floor surface is not flat, the floor material is dimensional error, and the heat generated in the floor material. It is preferable to design appropriately so that expansion and contraction can be effectively absorbed.

When laying adjacent floor materials on a flat floor surface without unevenness using convex connection pieces and concave connection pieces, the tenon engagement pieces and dovetail engagement pieces are respectively in the vertical direction. The playable distance (Z) is preferably 0.5 mm to 5 mm. If the distance (Z) in which the tenon locking piece and the dovetail locking piece can freely move in the vertical direction is less than 0.5 mm, unevenness cannot be absorbed effectively, and the connecting part of the flooring The backlash in the case may not be resolved. If the distance (Z) over which the tenon locking piece and dovetail locking piece can move in the vertical direction exceeds 5 mm, the aesthetics and design when the flooring is laid will deteriorate, and pedestrians will tend to whisper. As a result, it becomes difficult to walk, and there is a problem in that the fixation, stability, and connection strength between the convex connecting piece and the concave connecting piece are likely to decrease.

The floor base surface for laying the flooring material of the present invention has a rubber sheet, a soft synthetic resin sheet, a rubber or synthetic resin foam sheet, a non-woven fabric or a woven material on the foundation floor surface for placing concrete before laying the flooring material. Sheets such as a fiber mat such as cloth, a waterproof sheet (including a sheet protection layer) made of a mat such as rock wool or felt may be laid in advance.

ADVANTAGE OF THE INVENTION According to this invention, the connection structure of the flooring which can suppress the floating of the flooring by the unevenness | corrugation of a floor ground surface and thermal expansion and contraction can be provided.

It is a perspective view which shows the outline of the whole structure of the flooring which concerns on the connection structure of the flooring of this invention. It is a perspective view which shows the outline of the structure which expanded the A section in FIG. It is a top view which shows the outline which looked at the flooring which concerns on the connection structure of the flooring of this invention from the back surface. It is a top view which shows the connection state of the floor materials which concern on the connection structure of the floor material of this invention.

Embodiments of the connecting structure for flooring of the present invention will be described in more detail below with reference to the drawings, but the present invention is not limited to only the embodiments shown in these drawings.

FIG. 1 shows an outline of the overall configuration of the flooring according to the connecting structure of flooring of the present invention, and FIG. 2 shows an outline of an enlarged configuration of part A in FIG. Moreover, FIG. 3 shows the outline which looked at the flooring which concerns on the connection structure of the flooring of this invention from the back surface, and FIG. 4 shows the connection state of flooring.

1 and 2, a flooring 1 is composed of a synthetic resin flooring body 3 made of polypropylene and a decorative material 2 made of an inorganic fired body.

In this embodiment, the adhesive receiving portion 35 provided on the back surface of the flooring main body 3 shown in FIG. 3 is dropped and filled with an epoxy resin adhesive (not shown) adjusted to a hard-flowing viscosity. As shown in FIGS. 1 and 2, the decorative material 2 is fixed to the floor material body 3 by pasting a plurality of decorative materials 2 on the surface of the floor material body 3.

In FIG. 3, the flooring main body 3 includes a square frame member 31 having a side of 30 cm and a lattice member 32, and the lattice member 32 is parallel to the frame member 31 and parallel to the diagonal line of the frame member 31. It is provided as a member extending in the direction.
A part of the lattice member 32 is formed wide, and a joint portion (not shown) between the decorative material 2 and the decorative material 2 is formed when a plurality of decorative materials 2 are pasted on the upper part of the floor material body 3. A joint hole 34 is provided for drainage of the joint part. At this time, the opening ratio formed by the gaps between the lattice members 32 and the joint holes 34 per unit of the flooring body 3 is 30 to 40%.

In FIG. 3, a plurality of legs 33 are provided on the back side of the frame member 31 and the lattice member 32, and a drainage space is formed between the flooring 3 and a floor base surface (not shown). Here, the size, number, and interval (pitch) of the legs 33 are not particularly limited.

In FIG. 3, the peripheral edge of the floor material 1, that is, the frame material 31 of the floor material body 3 includes three convex connection pieces 4 on each side and three concave connection pieces 5 on each of the four sides. The frame material 31 is provided alternately and continuously toward the outside of the floor material body 3.

In FIG. 2, when laying a plurality of flooring materials 1, a rectangular dovetail groove 5 a communicates with the concave connection piece 5 in the thickness direction of the flooring material 1 in order to connect adjacent flooring materials 1 to each other. The convex connecting piece 4 is provided with a tenon 4a loosely fitted in the dovetail groove 5a. As in the present embodiment, the height positions of the upper ends of the dovetail grooves 5 a and the tenon 4 a may be the same as the height positions of the upper ends of the frame members 31 of the flooring main body 3, or It may be made higher or lower than the height position.
Furthermore, in FIG. 2, the height dimension in which the dovetail groove 5a and the tenon 4a are provided is made larger than the thickness dimension of the frame material 31 of the flooring body 3 in which the convex connection piece 4 and the concave connection piece 5 are provided. However, the thickness dimension of the frame member 31 may be the same.

Since the convex connecting piece 4 and the concave connecting piece 5 are coupled, a slit-like opening 5b is provided at the tip of the dovetail groove 5a, and a bulging portion 4b is provided at the tip of the tenon 4a. The plan view shape of the bulging portion 4b provided at the tip of the tenon 4a is smaller than the plan view shape of the dovetail groove 5a, and the width of the bulge portion 4b in the direction parallel to the frame material 31 is It is formed larger than the size of the opening 5b of 5a.
From this, the tenon 4a provided on the convex connecting piece 4 is slid up and down into the dovetail groove 5a while passing through the opening 5b of the dovetail groove 5a of the concave connecting piece 5, and the convex connecting piece 4 and the concave connecting piece 5 Can be combined while forming a retaining structure in the connecting direction between the adjacent flooring materials 1.

As shown in FIG. 2, the convex connecting piece 4 and the concave connecting piece 5 are provided at the same height position of the frame member 31 and are connected to the bulging portion 4 b provided at the tip of the convex connecting piece 4. The thickness dimension in the direction is made smaller than the depth dimension in the protruding height direction of the dovetail groove 5 a provided in the concave connecting piece 5. As a result, when the convex connecting piece 4 and the concave connecting piece 5 are joined together, when the flooring 1 is laid, the unevenness to the extent that the flatness of the connection between the flooring materials 1 can be secured is absorbed, and after the laying, In this case, a connecting margin that absorbs thermal expansion and contraction can be provided.

In FIG. 2, the tenon 4 a is connected to the opening 5 b of the dovetail groove 5 a when the convex connecting piece 4 and the concave connecting piece 5 are joined (the projecting direction of the convex connecting piece 4). Convex-shaped locking pieces 4c are provided continuously.
On the other hand, in the opening 5b of the concave connecting piece 5 with which the tenon 4a of the convex connecting piece 4 abuts, a locking piece 5c having a convex shape at a position and height that can be engaged with the engaging piece 4c of the tenon 4a. Is provided.
Furthermore, the size of the locking piece 4c (size in the thickness direction of the flooring material) and the size of the locking piece 5c (size in the thickness direction of the flooring material) are the convex connection piece 4 and the concave connection piece. When the two are connected to each other, a gap is provided so that each of the locking pieces can be loosely moved in the thickness direction of the flooring 1.

Therefore, when the tenon 4a is slid up and down in the dovetail groove 5a while passing through the opening 5b of the dovetail groove 5a to connect the convex connecting piece 4 and the concave connecting piece 5, the locking piece 4c of the tenon 4a The tenon 4a and the dovetail groove 5a are loosely fitted so that the locking piece 5c of the dovetail groove 5a is engaged with each other, so that a connection direction retaining structure and a vertical direction retaining structure are obtained. Is done.

At this time, the size of the locking piece 4c and the size of the locking piece 5c are such that each locking piece is provided with a gap so that it can move freely in the thickness direction of the flooring 1. Non-land surface that cannot be absorbed only by movement in the plane direction that is the connecting direction of floor materials, that is, non-land surface that has a curved surface, large uneven surface, local or continuous slope change is also effective. Can be absorbed.

As shown in FIG. 2, a slit 4d is formed in the tenon 4a from the tip of the protruding connecting piece 4 in the projecting direction so that the protruding connecting piece 4 is elastically deformed in a direction parallel to the periphery of the flooring 1. Yes. Thereby, the joint workability of the convex connecting piece 4 and the concave connecting piece 5 can be improved.

In this embodiment, the dimension of the connecting margin (Y-X) is 3 mm, and the distance (Z) at which the locking piece 4c can freely move in the vertical direction with respect to the locking piece 5c is 2 mm.

ADVANTAGE OF THE INVENTION According to this invention, the connection structure of the flooring which can suppress the floating of the flooring by the unevenness | corrugation of a floor ground surface and thermal expansion and contraction can be provided.

DESCRIPTION OF SYMBOLS 1 Floor material 2 Cosmetic material 3 Floor material main body 31 Frame material 32 Lattice member 33 Leg 34 Joint hole 35 Adhesive receiving part 4 Convex connection piece 4a Tenon 4b Expansion part 4c Locking piece 4d Slit 5 Concave connection piece 5a Dovetail 5b Opening 5c Locking piece

Claims (1)

It is a connecting structure of floor materials formed by connecting adjacent rectangular floor materials,
Each flooring includes a convex connecting piece and a concave connecting piece on the periphery,
A tenon having a locking piece at the end is provided on the convex connecting piece of each flooring,
The concave connecting piece of each flooring is provided with a dovetail groove having a locking piece engageable with the tenon locking piece of the convex connecting piece of the adjacent flooring so as to communicate with the thickness of the flooring. And
The tenon of the convex connecting piece of the adjacent floor material is loosely fitted in the dovetail groove of the concave connecting piece of the one floor material, so that the convex connecting piece of the floor material adjacent to the concave connecting piece of the one floor material And one flooring and the adjacent flooring are connected,
When the concave connecting piece of one flooring and the convex connecting piece of the adjacent flooring are joined together, the locking piece provided in the dovetail of the concave connecting piece of the one flooring and the adjacent flooring A connecting structure for flooring, wherein the engaging piece provided on the tenon of the convex connecting piece is engaged in a freely movable manner in the thickness direction of the flooring.

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