JP2018016958A - Floor material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor material that suppresses formation of a stepped part or rattling, while facilitating removal after installation.SOLUTION: A floor material 1 has a surface decorative layer 20 formed on a top surface side of a base material layer 10 that is long in a direction. A plurality of grooves 11 are formed that open on a rear surface side of the base material layer so as to extend over entirely in a width direction, in a longitudinal direction leaving an interval. A male tongue part 12 is provided on an edge part of the base material layer in the longitudinal direction, while a female tongue part 13 is formed on the other edge part in the longitudinal direction that is joined with the male tongue part of the floor material installed adjacently, by fitting a protruded part into a recessed part. A tongue part 14 of a shiplap form protruded on the top surface side is provided on the edge part in the width direction of the base material layer. A tongue part 17 of a shiplap form protruded on the rear surface side is provided on the other edge part in the width direction of the base material layer, to be joined with the tongue part on the edge part in a width direction of the floor material installed adjacently, by fitting protruded parts with each other.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a flooring.

Conventionally, floor materials that are fixed to the floor base using nails, adhesives, etc. are known, but such floor materials can be partially replaced after installation or overall renovation (reform) There was a problem that it was not easy to remove for such reasons.
For example, Patent Document 1 below discloses a flooring material having a substantially T-shaped cross section provided with left and right engaging portions that protrude horizontally on the left and right upper portions of a substrate portion, and having a pierced structure at the end. ing.

JP 2007-154626 A

  However, if the flooring described in Patent Document 1 is uneven or has a step or the like on the floor base, the side protruding from the surface side of the longitudinal ends of the joint structure is likely to float. It is possible.

  This invention is made | formed in view of the said situation, and it aims at providing the flooring which can suppress generation | occurrence | production of a level | step difference and shakiness, while the removal after construction is possible easily.

  In order to achieve the above object, a flooring according to the present invention is a flooring provided with a surface decorative layer on the surface side of a base material layer elongated in one direction, and the base material layer includes A plurality of grooves that open on the back surface side so as to extend over the entire width direction are provided at intervals in the longitudinal direction, and a male part is provided at one longitudinal end of the base material layer, The other end in the longitudinal direction is provided with a female real part that is actually joined to the male real part of the flooring material that is installed adjacently, and the surface side protrudes from one end in the width direction of the base material layer. A joint-shaped real part is provided, and at the other end in the width direction, the back side that is actually joined to the real part at one end in the width direction of an adjacent flooring is projected. A cut-out real part is provided.

  Since the flooring according to the present invention is configured as described above, it is possible to suppress the occurrence of steps and rattling while being easily removable after construction.

(A)-(c) shows an example of the flooring which concerns on one Embodiment of this invention typically, (a) is a schematic plan view, (b) is the XX arrow in (a). (C) is a partially broken schematic longitudinal cross-sectional view corresponding to the YY line arrow in (a). (A), (b) shows the state which constructed the floor material typically, (a) is a partial fracture outline longitudinal section corresponding to Drawing 1 (b), and (b) is a figure. It is a partially broken schematic longitudinal cross-sectional view corresponding to 1 (c). (A), (b) shows an example of the flooring which concerns on other embodiment of this invention typically, and is a partially broken schematic longitudinal cross-sectional view corresponding to FIG.1 (b), (c), respectively. is there.

Embodiments of the present invention will be described below with reference to the drawings.
In the following embodiments, directions such as the vertical direction will be described with reference to a state in which the flooring according to each embodiment is constructed.

FIG.1 and FIG.2 is a figure which shows typically an example of the flooring which concerns on 1st Embodiment.
As shown in FIG. 1, the flooring 1 according to the present embodiment has a configuration in which a surface decorative layer 20 is provided on the surface (upper surface) side of a base material layer 10 that is elongated in one direction.
The flooring 1 is formed in a substantially rectangular flat plate shape, and a plurality of sheets are arranged in the longitudinal direction of the flooring and in the widthwise direction of the flooring on a floor base 2 (see FIG. 2) as an installation target to constitute a floor surface. . The flooring 1 may be configured to be constructed as a so-called laying floor on the floor base 2 without using a fastener such as a screw or a nail or an adhesive. Further, the floor foundation 2 may be, for example, a joist, a floor foundation board, a floor slab, or a double floor foundation such as a so-called free access floor (OA floor). Moreover, as such a double floor base, it is good also as what provided the support | pillar so that spaces, such as wiring, may be provided in the back surface side (lower surface side) of a square-shaped base panel.

The length dimension, the width dimension, the thickness dimension, and the like of the flooring 1 may be approximately the same as the dimensions of a general flooring. For example, the flooring 1 may be a long plate-like body having a length dimension of about 1500 mm to 2000 mm and a width dimension of about 250 mm to 500 mm. Moreover, when it is set as the structure constructed like a flooring, the flooring 1 is good also as a thing made into the dimension smaller than the above general flooring. For example, the flooring 1 may have a length dimension of about 600 mm to 1200 mm and a width dimension of about 100 mm to 200 mm.
Further, the flooring 1 may have a thickness of about 3 mm to 30 mm, or about 5 mm to 15 mm.

  The base material layer 10 may be formed of a wood material, a synthetic resin material, a metal material, or the like. Wood-based materials include plywoods made by laminating multiple single plates, wood laminates such as LVL (single plate laminate), wood boards such as particle boards, MDF (medium density fiber board) and HDF (high density fiber) Wood fiber board and the like. In addition, as the wood-based material, a wood powder / plastic composite (WPC) containing a predetermined amount of wood powder, inorganic filler, compatibilizer, colorant, etc., in a synthetic resin material is adopted. May be. Moreover, when the base material layer 10 is formed of plywood, the odd-numbered single plate having the fiber direction along the floor material longitudinal direction and the even layer having the fiber direction aligned with the floor material width direction. You may make it employ | adopt what was set as the structure which laminated | stacked the odd-numbered single plate by 3 or more consisting of a single plate. Moreover, the base material layer 10 is good also as what was made into the multilayer structure which laminated | stacked the board | plate material which consists of these various materials.

As shown in FIGS. 1A, 1 </ b> C, and 2 </ b> B, a male part 12 is provided at one longitudinal end of the base material layer 10. Moreover, the other end part of the base material layer 10 in the longitudinal direction is provided with a female part 13 which is actually joined to the male part 12 of the flooring 1 installed adjacent to the longitudinal direction.
The male part 12 is provided so as to protrude outward in the longitudinal direction from a substantially central portion in the thickness direction of one end in the longitudinal direction of the base material layer 10. Moreover, the male part 12 is provided in the shape of a protrusion over substantially the entire floor material width direction so as to extend in the floor material width direction. In the illustrated example, the male part 12 is formed in a tapered projecting piece shape whose dimension (thickness dimension) along the floor material thickness direction becomes smaller toward the tip side.
The female real part 13 is provided so as to open toward the outer side in the longitudinal direction at a substantially central portion in the thickness direction of the other end in the longitudinal direction of the base material layer 10. Moreover, the female real part 13 is provided in the groove shape over substantially the whole floor material width direction so that it may extend in a floor material width direction. In the illustrated example, the female real part 13 is formed in an expanded concave groove shape corresponding to the male real part 12 and having a dimension (groove width dimension) along the floor material thickness direction that increases toward the opening side. The male real part 12 and the female real part 13 are not limited to those shown in the drawings, and various modifications are possible.

In addition, as shown in FIGS. 1A, 1B, and 2A, the base layer 10 has one end portion in the width direction as a jointed real part protruding from the surface side. One real part 14 is provided. Further, the other end in the width direction of the base material layer 10 is a joint projecting the back side that is actually joined to the first real part 14 at one end in the width direction of the flooring 1 that is installed adjacent to the width direction. A second real part 17 is provided as a jagged real part.
The first real part 14 is provided with a surface-side projecting piece 15 so as to protrude outward in the width direction at a surface side portion of one end part in the width direction of the base material layer 10, and one end in the width direction of the base material layer 10. It is set as the structure which provided the notch-shaped back side recessed step part 16 opened toward the width direction outer side and the downward side in the back surface side site | part of the part. The front surface side protruding piece 15 and the back surface side recessed step portion 16 are provided over substantially the entire floor material in the longitudinal direction. Moreover, the dimension along the floor material thickness direction of these front surface side protruding piece parts 15 and the back surface side recessed step part 16 is made into the mutually substantially same dimension.

  The second real part 17 is provided with a back-side protruding piece 18 so as to protrude outward in the width direction at the back-side part of the other end in the width direction of the base material layer 10, and in the width direction of the base material layer 10. It is set as the structure which provided the notch-shaped surface side concave step part 19 opened toward the width direction outward side and the upper side in the surface side site | part of the other end part. These back surface side protrusion part 18 and front surface side concave step part 19 are provided over substantially the whole flooring longitudinal direction like the above. Moreover, the dimension along the floor material thickness direction of these back surface side protruding piece parts 18 and the surface side recessed step part 19 is made into the mutually substantially same dimension like the above. Further, the dimension (thickness dimension) along the floor material thickness direction of the back surface side projecting piece part 18 and the front surface side projecting piece part 15 of the first actual part 14 is set to be substantially the same as each other. The dimension (step dimension) along the floor material thickness direction of the back surface side concave step part 16 of the first real part 14 may be substantially the same. Moreover, the thickness dimension of the front surface side protruding piece portion 15 and the back surface side protruding piece portion 18 may be slightly smaller than the step size of the back surface side recessed step portion 16 and the front surface side recessed step portion 19.

Further, the base material layer 10 is provided with a plurality of grooves 11 opened on the back surface side so as to extend over the entire width direction at intervals in the longitudinal direction.
As shown in FIGS. 1C and 2B, the plurality of grooves 11 have a groove depth direction along the floor thickness direction and a groove longitudinal direction along the floor width direction. Is provided. The plurality of grooves 11 are such that the floor material 1 can be deformed into a curved shape (arc shape) on the surface side when viewed in the width direction of the floor material, and the longitudinal direction with the floor material 1 installed adjacent to the longitudinal direction. It is provided so that the actual joint on both ends can be released. In addition, the plurality of grooves 11 are configured such that portions spaced apart in the floor material longitudinal direction of the floor material 1 divided by the plurality of grooves 11 in the floor material longitudinal direction are steps of the floor base 2 (unevenness). ) To be relatively displaceable in the floor material thickness direction.

  Moreover, in this embodiment, it is set as the structure which provided these several groove | channels 11 over the substantially whole of the longitudinal direction at equal intervals in the flooring longitudinal direction. That is, the plurality of grooves 11 are provided at equal intervals from one longitudinal end of the base material layer 10 to the other longitudinal end. Each groove 11 has a substantially rectangular groove shape when viewed in the groove longitudinal direction. That is, each groove 11 is defined by a groove bottom that is parallel to the front and back surfaces of the flooring 1 and both groove sidewalls that are parallel to each other in the direction along the longitudinal direction of the flooring. Instead of such an aspect, each groove 11 may have a substantially U-shaped groove shape or the like when viewed in the groove longitudinal direction. Further, the groove depth dimensions of the grooves 11 are all the same, and the groove width dimensions of the grooves 11 are all the same.

  The groove width dimension of the plurality of grooves 11 and the dimension between the adjacent grooves 11 and 11 (inter-groove dimension) are as follows. It is good also as an appropriate dimension from a viewpoint of followability. For example, the groove width dimension of each groove 11 may be about 1 mm to 5 mm, and preferably about 1 mm to 3 mm. If this groove width dimension is made too small, the workability and unevenness following ability tend to be lowered, and if the groove width dimension is made too large, the strength tends to be lowered. The inter-groove dimension may be about 5 mm to 20 mm, and preferably about 5 mm to 15 mm. If this inter-groove dimension is made too small, the strength tends to decrease, and if the inter-groove dimension is made too large, the non-land followability tends to decrease.

  Moreover, the groove depth dimension of each groove | channel 11 is based on the thickness of the base material layer 10, and from the viewpoint of the intensity | strength of the flooring 1, the level | step difference (non-land) follow-up property, etc. substantially the same as the above. It is good also as an appropriate dimension. If the groove depth dimension is made too small with respect to the thickness of the base material layer 10, there is a tendency that unevenness followability tends to decrease, and if the groove depth dimension is made too large with respect to the thickness of the base material layer 10. , The strength tends to decrease. From such a viewpoint, the groove depth dimension of each groove 11 may be 1/3 or more and 9/10 or less of the thickness dimension of the base material layer 10, and may preferably be 1/2 or more. More preferably, the dimension may be 2/3 or more. In the present embodiment, each groove 11 is configured such that the groove bottom is positioned within the thickness of the front-side protruding piece 15 of the first real part 14. In other words, each groove 11 is provided so as to open also on the back surface side of the front surface side protruding piece portion 15 and on the front surface side of the back surface side protruding piece portion 18 of the second actual portion 17.

In the illustrated example, the dimension along the floor material longitudinal direction from the groove 11 located closest to the male part 12 on the one end side in the floor material longitudinal direction to the rear surface side end surface on the base part side of the male part 12 is the inter-groove dimension. It shows an example with the same level. Moreover, the example which made the dimension along the floor material longitudinal direction from the groove | channel 11 located in the female real part 13 side most on the floor material longitudinal direction other end side to the groove bottom of the female real part 13 comparable to the dimension between grooves. Show. Instead of such a mode, the grooves 11 and 11 on both ends in the longitudinal direction of the flooring material may be provided so as to be positioned on the outer side or the central side in the longitudinal direction of the flooring material as compared with the illustrated example.
The plurality of grooves 11 may be formed by cutting or the like using an appropriate cutting tool.
Further, the base material layer 10 is provided with a plurality of grooves (vertical grooves) opened on the back surface side so as to extend over the entire length of the floor material in the floor material width direction at intervals (equal intervals). It is good. In this case, the groove depth dimension of these vertical grooves may be smaller than the groove depth dimension of each groove 11 extending in the floor material width direction.

The surface decorative layer 20 is laminated and integrated on the surface side of the base material layer 10. As the surface decorative layer 20, a veneer (a veneer veneer) such as a veneer formed from natural wood (named wood), a decorative printing paper printed with various patterns (patterns) such as a wood grain pattern, an olefin type, or the like A synthetic resin-based resin sheet (film) may be used. The thickness of the surface decorative layer 20 may be, for example, about 0.01 mm to 1.0 mm, or about 0.05 mm to 0.5 mm. Moreover, as a decorative veneer which comprises the surface decoration layer 20, what was heat-colored by the high voltage | pressure high temperature steam may be used.
The surface decorative layer 20 may include a coating layer such as a printed layer instead of the sheet-like layer.

In addition, a moisture-proof layer may be provided on the base material layer 10 side which is the back side of the surface decorative layer 20, or a transparent or translucent protective layer (topcoat layer) may be provided on the surface side. As such a protective layer, a transparent paint film layer (resin clear layer) or a transparent resin film (sheet) formed by applying a clear resin paint such as an ultraviolet curable paint such as urethane resin or acrylic resin. ) And the like.
Moreover, in the example of a figure, the example which provided the chamfering-shaped chamfering part in the surface side edge part (surface side 4 peripheral part) of the longitudinal direction both ends of the said flooring 1 and the width direction both ends is shown. Further, in the illustrated example, the base material layer 10 is illustrated as being exposed at the chamfered portion. However, the surface decorative layer 20 similar to the above may be provided in a series on the chamfered portion, May be provided with a coating layer or the like as a separate decorative layer.

Further, in the present embodiment, on the back surface side of the base material layer 10, in the relative thickness direction of the portions spaced apart in the longitudinal direction of the flooring 1 divided in the longitudinal direction by the plurality of grooves 11. It is set as the structure which provided the back surface material 21 which can track the displacement of this.
Moreover, in this embodiment, the back material 21 is made into a sheet form. Further, the thickness of the back surface material 21 is set smaller than the thickness of the base material layer 10. The thickness of the back material 21 may be ½ or less of the thickness of the base material layer 10, and the example shown in the figure is about 1/10. Further, the thickness of the back material 21 may be about 0.03 mm to 3.0 mm, preferably about 0.1 mm to 1.5 mm, more preferably about 0.3 mm to 1.0 mm. Good.

  The back material 21 may be any material that can follow the above displacement of the floor material 1, and may be, for example, a synthetic resin resin sheet (film) such as an olefin resin or other resin. A sheet, a rubber sheet, or the like may be used. The back material 21 is exemplified by a reinforced fiber sheet such as a woven or non-woven fabric of a reinforcing fiber such as glass fiber, carbon fiber, or mineral fiber, or a mat, from the viewpoint of improving rigidity while reducing the thickness. . Such a back material 21 may be a glass fiber sheet. For example, a glass fiber nonwoven fabric (glass) formed by applying an adhesive (binder) such as an epoxy resin or an acrylic resin to a sheet-like glass fiber. Paper). Further, the back material 21 may be a material in which a paper raw material such as pulp is combined with a reinforcing fiber such as glass fiber. Further, the back material 21 may be a reinforcing fiber mixed sheet such as a fiber reinforced resin sheet obtained by impregnating such a reinforcing fiber sheet with a resin. Moreover, as the back surface material 21, what was made into the multilayer structure which laminated | stacked the above paper sheets, resin sheets, etc. on such a reinforced fiber sheet may be sufficient.

  In addition, the back surface material 21 is formed on the base material layer 10 over substantially the entire length in the longitudinal direction of the base material layer 10 so as to straddle substantially all of the plurality of grooves 11 provided at intervals in the floor material longitudinal direction. It may be affixed to the back side. Further, the back material 21 may be affixed over substantially the entire back surface of the base material layer 10 (the back surface excluding the back surface of the male part 12), but 50% or more of the back surface of the base material layer 10, Preferably, it may be attached so as to cover 70% or more. Further, the back material 21 may be formed in a narrow width attached to the back surface of the base material layer 10 over substantially the entire length. In this case, a plurality of back surface materials 21 may be attached to the back surface of the base material layer 10 at intervals in the width direction.

Moreover, in this embodiment, the protrusion part 22 which protrudes the back surface material 21 from the end surface (back surface side end surface) 16a of the back surface side of the 1st real part 14 of the width direction one end part of the base material layer 10 is formed. The structure is provided on the back side of the base material layer 10. That is, the back surface material 21 is formed on the back surface of the base material layer 10 so as to project the protruding portion 22 from the back surface side end surface 16a facing the floor material width direction outward side which defines the back surface side concave step portion 16 of the first real part 14. The configuration is provided. The protruding portion 22 of the back surface material 21 is located on the lower side (back surface side) of the back surface side protruding piece portion 18 of the second real part 17 of the floor material 1 installed adjacent to the width direction of the floor material 1. It is set as the structure arranged like this. That is, the second portion of the flooring 1 that is opened toward the outer side in the width direction of the flooring by the protruding part 22 and the front side protruding piece part 15 of the first real part 14 and is installed adjacent to the widthwise direction. It has a configuration in which both sides in the groove width direction of the female groove-like groove portion that receives the rear surface side protruding piece portion 18 of the real portion 17 are defined.
Moreover, in this embodiment, the protrusion dimension to the floor material width direction from the back surface side end surface 16a of this protrusion part 22 is based on the protrusion dimension to the floor material width direction from the back surface side end surface 16a of the surface side protrusion piece part 15. It is also small. The projecting dimension of the projecting part 22 may be ¼ or more of the projecting dimension of the surface side projecting piece part 15, preferably ½ or more, and the example shown in the figure is about 3/5. ing.

  Further, in the illustrated example, the other end in the width direction, which is a side different from the protruding portion 22 side of the back surface material 21, is provided so as to reach the back surface of the back surface side protruding piece portion 18 of the second real portion 17. Show. It is good also as a structure provided so that the other end part of the width direction of this back surface material 21 might adjoin to or contact | abut the front-end | tip part of the protrusion part 22 of the back surface material 21 of the flooring 1 installed adjacent to the width direction. In addition, it is good also as a structure which replaced with such an aspect and was provided so that the width direction other end part of the back surface material 21 might be located in the floor material width direction center side rather than the example of a figure. Further, in the illustrated example, one end in the longitudinal direction on the male part 12 side of the back material 21 is positioned on the center side in the floor material width direction with respect to the back side end face on the base part 10 side of the male part 12 of the base material layer 10. Although the example provided is shown, it is good also as a structure provided so that it may be located in the back surface side end surface of the male part 12 base end side. Further, in the illustrated example, the other end in the longitudinal direction on the female real part 13 side of the back material 21 is located on the center side in the floor material width direction with respect to the back side end face on the female real part 13 opening side of the base material layer 10. Although the example provided is shown, it is good also as a structure provided so that it may be located in the back surface side end surface of the female-real-part 13 opening side.

  When removing one floor material 1 of the plurality of floor materials 1 constructed as described above and actually joined in the width direction and the longitudinal direction, the following may be performed. For example, as shown in FIG. 2 (a), the thin plate-like jig 3 is placed on the back side of the front-side protruding piece 15 at one end in the width direction of the longitudinal center side portion of the flooring 1 to be removed. Insert it in the same way. And as shown in FIG.2 (b), the longitudinal direction center side of this flooring 1 is cancelled | released so that the actual joining with the flooring 1 and 1 adjacent to the longitudinal direction both ends of this flooring 1 may be cancelled | released. You may make it lift the one end part side of the width direction of a site | part, release this actual joining, and remove the flooring 1. FIG. At this time, the width of the flooring 1 is accompanied by the deformation of the protruding portion 22 of the backside material 21 arranged on the backside of the backside protruding piece 18 of the second real part 17 of the flooring 1 adjacent in the width direction. The one end side in the direction can be lifted.

Since the flooring 1 according to the present embodiment is configured as described above, it is possible to suppress the occurrence of steps and rattling while being easily removable after construction.
That is, it is set as the structure which provided in the back surface side of the base material layer 10 the several groove | channel 11 extended over the whole width direction at intervals in the longitudinal direction. In addition, as a configuration in which the male part 12 and the female part 13 are provided at both longitudinal ends of the base material layer 10 and the joint-like real parts 14 and 17 are provided at both widthwise ends of the base material layer 10. Yes. Accordingly, the portions of the floor material 1 divided in the longitudinal direction by the plurality of grooves 11 are easily displaced in the thickness direction following the steps of the floor base 2. In addition, the fact that the ends in the longitudinal direction of the flooring materials 1 adjacent to each other in the longitudinal direction can be actually joined to each other causes floating at both ends in the longitudinal direction due to unevenness or steps of the floor substrate 2. It is possible to suppress the occurrence of rattling and steps. Moreover, the edge parts of the width direction of the floor materials 1 and 1 adjacent to the width direction can be actually joined in the shape of a joint. Thereby, the float of the width direction other end part side of the flooring 1 can be suppressed. Moreover, the flooring 1 having such a configuration is suitable as a flooring material as a finishing material on a free access floor (OA floor) or the like where a level difference or the like due to subduction is likely to occur.
Moreover, the longitudinal direction both ends of the flooring materials 1 and 1 adjacent to a longitudinal direction are lifted so that the width direction one end part of the longitudinal direction center side site | part of the flooring 1 may be curved upwards as mentioned above. This actual joining can be released, and the flooring 1 can be removed (peeled) in units of one sheet.

Further, in the present embodiment, on the back surface side of the base material layer 10, in the relative thickness direction of the portions spaced apart in the longitudinal direction of the flooring 1 divided in the longitudinal direction by the plurality of grooves 11. It is set as the structure which provided the back surface material 21 which can track the displacement of this. Therefore, the base material layer 10 having relatively low rigidity due to the formation of the plurality of grooves 11 can be reinforced by the back surface material 21, and breakage of the base material layer 10 can be suppressed.
Moreover, in this embodiment, the back surface material 21 shall be made into the sheet form. Therefore, the strength can be improved while reducing the thickness of the flooring 1.

  Moreover, in this embodiment, the back surface material 21 protrudes from the back surface side end surface 16a of the 1st real part 14 as a jointed real part which made the surface side of the width direction one end part of the base material layer 10 protrude. It is set as the structure provided in the back surface side of the base material layer 10 so that the protrusion part 22 may be formed. Therefore, the protrusion 22 of the back surface material 21 is arranged on the back surface side (lower side) of the back surface side protruding piece portion 18 of the second real part 17 of the floor material 1 installed adjacent to the width direction. It is possible to effectively suppress lifting on the one end side in the direction. In other words, a female groove-like groove portion is formed at one end portion in the width direction of the flooring material 1 by the protruding portion 22 of the back surface material 21 and the front-side protruding piece portion 15, and adjacent to the groove portion in the width direction. The back-side protruding piece 18 at the other end in the width direction of the flooring 1 to be installed can be joined in the actual joining shape. In addition, since the protruding portion 22 of the back surface material 21 is flexible even when bonded in this way, as described above, when the flooring 1 is removed, the protruding portion 22 of the back surface material 21 is deformed. Accordingly, the flooring 1 can be removed in units of one sheet.

Next, another embodiment according to the present invention will be described with reference to the drawings.
Drawing 3 is a figure showing typically an example of the flooring concerning a 2nd embodiment.
Note that differences from the first embodiment will be mainly described, and the same components will be denoted by the same reference numerals, and description thereof will be omitted or briefly described.

As shown in FIGS. 3A and 3B, the flooring 1 </ b> A according to the present embodiment uses the backside material 21 </ b> A as a rubber sheet and is thicker than the backside material 21 included in the flooring 1 according to the first embodiment. Is assumed to have been large. In the present embodiment, the thickness of the back surface material 21A is substantially the same as the thickness of the projecting piece portions 15 and 18 of the respective real portions 14 and 17. That is, the thickness of the back surface material 21 </ b> A is about ½ of the thickness of the base material layer 10.
Further, as shown in FIG. 3A, the back surface material 21 </ b> A is provided on the back surface of the base material layer 10 so that the protruding dimension of the protruding portion 22 </ b> A is larger than that of the first embodiment. In the present embodiment, the projecting dimension from the rear surface side end face 16a of the projecting portion 22A of the rear material 21A is equal to or larger than the projecting dimension from the rear surface side end face 16a of the front surface projecting piece 15 of the first real part 14. Further, the projecting dimension of the projecting part 22 </ b> A is made larger than the projecting dimension of the surface-side projecting piece part 15. In the example shown in the figure, the protruding dimension of the protruding portion 22A is about twice the protruding dimension of the front-side protruding piece 15.

In addition, the other end in the width direction, which is a side different from the protruding portion 22A side of the back surface material 21A, is floored more than the end surface of the surface side concave step portion 19 of the second real part 17 that faces outward in the floor material width direction. It is set as the structure provided so that it might be located in the material width direction center side. As described above, the other end in the width direction of the back material 21A may be provided so as to be close to or in contact with the tip of the protruding portion 22A of the back material 21A of the floor material 1A installed adjacent to the width in the same manner as described above. Good. Moreover, as shown in FIG.3 (b), the longitudinal direction one end part used as the male part 12 side of 21 A of back materials is located in the back surface side end surface of the male part 12 base end side of the base material layer 10. As shown in FIG. The configuration is provided. In addition, the other end in the longitudinal direction on the side of the female real part 13 of the back surface material 21 </ b> A is provided so as to be positioned on the back side end face on the opening side of the female real part 13 of the base material layer 10.
Also in the flooring 1A according to the present embodiment having the above-described configuration, the same effects as those of the first embodiment described above are achieved. Moreover, in this embodiment, since the protrusion dimension of 22 A of protrusion parts of 21 A of back materials is enlarged, the lifting of the width direction one end part side can be suppressed more effectively.

In addition, you may make it apply the structure which mutually differs in the flooring materials 1 and 1A which concern on each said embodiment by combining suitably or combining.
Moreover, in each said embodiment, although the back surface materials 21 and 21A are set as the structure provided in the back surface side of the base material layer 10 so that the protrusion parts 22 and 22A may be formed, such protrusion parts 22 and 22A are provided. It may not be provided. Moreover, although the back materials 21 and 21A are shown as sheet-like examples, the back materials 21 and 21A having a relatively large thickness (for example, a thickness exceeding 3 mm) may be provided. Good. Furthermore, it is good also as a structure which does not provide such back materials 21 and 21A. Various other modifications are possible for the flooring materials 1 and 1A according to the above-described embodiments.

1, 1A Floor material 10 Base material layer 12 Male real part 13 Female real part 14 1st real part (joint prickly real part which protruded the surface side)
16a End surface on the back side (end surface on the back side)
17 Second real part (joint prickly real part with the back side protruding)
20 Surface decorative layer 21, 21A Back material 22, 22A Protruding part

Claims (4)

A flooring provided with a surface decorative layer on the surface side of the base material layer that is elongated in one direction,
The base material layer is provided with a plurality of grooves that are open on the back side so as to extend over the entire width direction, and are spaced apart in the longitudinal direction. A real part is provided, and at the other end in the longitudinal direction, a female real part that is actually joined to the male real part of the flooring material that is installed adjacently is provided, and at one end part in the width direction of the base material layer The back side is actually joined with the real part at one end in the width direction of the flooring that is installed adjacent to the other end in the width direction. A flooring material characterized in that it is provided with a peg-shaped real part protruding from the top. In claim 1,
On the back surface side of the base material layer, a back surface capable of following the displacement in the relative thickness direction of the portions spaced apart in the longitudinal direction of the floor material divided in the longitudinal direction by the plurality of grooves. Floor material characterized in that a material is provided. In claim 2,
The floor material is characterized in that the back material is in the form of a sheet. In claim 2 or 3,
The back surface of the base material layer is formed so that a protruding portion protruding from the back surface side end surface of the jointed real portion protruding from the front surface side of one end portion in the width direction of the base material layer is formed. Floor material characterized by being provided on the side.

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