JP5940997B2 - Wood flooring - Google Patents

Description

  The present invention relates to a wooden flooring for a building.

  For flooring used in detached houses, condominiums and other buildings, in addition to solid flooring made of solid wood, the surface of a wooden substrate made of plywood, MDF, etc., or these wooden substrates are laminated For example, there is a decorative flooring material in which a decorative material of a famous wood is pasted on the surface of a wooden base material (hereinafter referred to simply as a “woody base material”).

  The decorative flooring material uses a base material that has less expansion and contraction due to moisture than solid wood, and various coatings are applied to the surface to prevent moisture from entering the interior. It has been used in many construction sites because it has less warpage and is easy to handle.

  Woody decorative materials used for decorative sticking flooring materials are roughly classified into thin plates having a thickness of about 0.2 to 0.6 mm and thick plates having a thickness of about 0.7 to 3.0 mm. The thin plate is manufactured by cutting a combination of a plurality of wood blocks bonded together with a slicer. The board manufactured by such a manufacturing method is called a veneer. On the other hand, as a thick plate, in addition to a veneer, a relatively thick one is often manufactured by cutting wood with a band saw or the like. A board manufactured by such a manufacturing method is called a saw board.

  In general, a groove is often provided on the surface of a decorative adhesive flooring material from the viewpoints of practicality and designability in a portion between bonded wood blocks. And as a cross-sectional shape of the groove | channel formed in the floor material surface, V shape is used a lot.

  However, a floor material having a groove having a V-shaped cross-section has a disadvantage that the material feeling and the three-dimensional effect are inferior to a floor material using a solid material. Therefore, Patent Documents 1 to 3 propose floor materials having curved grooves protruding outward.

JP-A-8-28012 JP 2001-90326 A JP2002-227390

  In the floor materials disclosed in Patent Documents 1 to 3, as illustrated in FIG. 1, a groove 2 having only a curved surface shape (hereinafter also referred to as “R groove”) is formed on the floor material surface 1 a. This shape has the following problems.

  In the R groove as shown in FIG. 1, the closer the groove is to the groove bottom, the greater the inclination of the groove with respect to the floor material surface. Therefore, when a paint or the like is applied to the floor material surface, there arises a problem that the paint or the like does not sufficiently blend into the groove.

  Further, when the groove is formed using a cutter or the like, in order to make the groove end 1b smooth without a step, as shown in FIG. 1, the tangent of the curvature circle 21 with the radius of curvature R that touches the curve of the R groove, It is necessary to adjust the groove depth so as to coincide with the flooring surface 1a. However, it is very difficult to strictly control the groove depth, and as shown in FIGS. 2 and 3, the tangent line of the curvature circle 21 may not coincide with the flooring surface 1a.

  As shown in FIG. 2, when the groove | channel 2 is formed so that the curvature circle 21 may become below the flooring surface 1a, a step difference will arise in the groove edge part 1b, and a walk feeling will deteriorate. On the other hand, as shown in FIG. 3, when the R-groove is formed shallow, there is a problem that the groove inclination angle at the groove end portion 1b varies depending on the groove depth, and the quality of the flooring becomes unstable.

  An object of this invention is to propose the wooden flooring which is excellent in a material feeling and a three-dimensional effect, and has the stable quality.

  This invention is made | formed in order to solve said subject, and makes a summary the wooden flooring shown below.

(1) A wooden flooring composed of at least a wooden decorative material and a wooden base material, wherein a vertical groove is provided on the surface side of the wooden decorative material,
The cross-sectional shape of the inclined surface of the vertical groove continues in order from the surface side of the wooden decorative material, the first straight portion, the curved portion protruding outward from the inclined surface (except for the case including a concave curve ) and the first . A wooden flooring comprising two straight portions (except when the inclination angle of the second straight portion with respect to the surface of the wooden decorative material is 90 °) .

(2) The inclination angle of the first straight portion with respect to the surface of the wooden decorative material is 2.5 to 20 °,
The radius of curvature of the curved portion is 2 to 4 mm, and
The wooden flooring according to (1) above, wherein an inclination angle of the second straight portion with respect to the surface of the wooden decorative material is 45 to 60 °.

  (3) The opening angle of the first straight part with respect to the tangent of the curved part at the contact point between the first straight part and the curved part, and the curved part at the contact point between the second straight part and the curved part. The wooden flooring according to (1) or (2), wherein the opening angle of the second straight part with respect to the tangent is 170 to 200 °.

(4) The groove depth in the first straight line part, the curved line part, and the second straight line part satisfies the following formula (i): (1) to (3) Wooden flooring.
0.4 ≦ (d1 + d2) / (d1 + d2 + d3) ≦ 0.6 (i)
However, the meaning of each symbol in the above formula (i) is as follows.
d1: Groove depth in the first straight line part (mm)
d2: groove depth (mm) in the curved portion
d3: Groove depth (mm) in the second straight portion

  According to the present invention, the familiarity of the paint and the like to the vertical groove is good, and there is no problem of unevenness at the end of the groove, so that it has a stable quality, and has a material feeling and a three-dimensional feeling equivalent to a solid material, and a design property Can be obtained.

It is sectional drawing which shows an example of the flooring which formed R groove | channel. It is a figure for demonstrating that a difference | difference may arise when forming R groove | channel. It is a figure for demonstrating that the inclination-angle of a groove edge part varies according to the depth of a groove | channel when forming R groove | channel. It is sectional drawing which shows an example of the flooring which concerns on this invention. It is sectional drawing which shows the flooring which concerns on this invention which provided the flat bottom in the groove bottom part. It is sectional drawing which shows the flooring which concerns on this invention which provided the V-shaped slit in the groove bottom part. It is sectional drawing which shows the flooring which concerns on this invention which provided the square-shaped slit in the groove bottom part. It is a figure which shows the relationship between a straight line part and the tangent of a curve part. It is a perspective view of the flooring which concerns on this invention which shows the recessed part and horizontal groove of a vertical groove, the joining location of flooring.

1. Groove In the wooden floor material according to the present invention, vertical grooves are formed on the surface side of the wooden decorative material, that is, the floor material surface 1a. A vertical groove is a groove formed in the longitudinal direction of the wooden flooring. As shown in FIGS. 4 to 7, the longitudinal groove of the present invention includes a first straight portion 2 a, a curved portion 2 b that protrudes outward from the slope, and a second shape, with the cross-sectional shape of the slope successively from the surface side of the wooden decorative material. It has a straight part 2c.

  Since the longitudinal groove of the present invention has the first straight portion 2a, the inclination angle at the groove end portion 1b can be made constant regardless of the depth of the groove, and a step difference can be prevented. In order to prevent a step difference at the groove end portion 1b and obtain a smooth cross-sectional shape, the inclination angle of the first straight portion 2a with respect to the floor material surface 1a is preferably 2.5 to 20 °. The upper limit of the inclination angle of the first straight part 2a is more preferably 15 °, and further preferably 10 °.

  Further, the vertical groove of the present invention has a curved portion 2b that protrudes outward in the cross-sectional shape of the slope, so that a material feeling and a three-dimensional feeling equivalent to a solid material can be obtained. It is preferable that the curvature radius R of the curvature circle 21 with which the curved portion 2b contacts is 2 to 4 mm. When the radius of curvature R is less than 2 mm, the curved portion of the groove cross section is reduced, and when the radius of curvature exceeds 4 mm, the curve becomes close to a straight line shape. This is because it becomes difficult to obtain.

  The curved portion 2b is preferably an arc shape, but may be a curved shape such as an elliptical arc shape. Also in this case, the curved portion 2b is approximated by a circular arc, and the curvature radius R of the curvature circle is obtained.

  Furthermore, since the vertical groove of the present invention has the second straight portion 2c, it becomes possible to adjust the inclination angle in the vicinity of the groove bottom, and when the paint or the like is applied to the floor material surface, the paint or the like is formed in the groove. You will become fully accustomed to the back. If the inclination angle of the second straight portion 2c is less than 45 °, the design property is deteriorated, and a paint pool or the like may occur in the groove. On the other hand, when the inclination angle of the second linear portion 2c exceeds 60 °, it is difficult not only to make a cutter for forming the groove, but also the familiarity of the paint or the like may be deteriorated. Therefore, the inclination angle of the second straight portion 2c is preferably 45 to 60 °.

  From the viewpoint of design and practicality, the cross-sectional shape of the longitudinal groove is preferably symmetrical with respect to the center of the groove, that is, the groove bottom. That is, the opening angle between the first straight portions 2a facing each other is preferably 140 to 175 °, and the opening angle between the second straight portions 2c is preferably 60 to 90 °.

In order to obtain a smoother cross-sectional shape, the first straight line portion 2a and the second straight line portion 2c have an inclination angle that coincides with the tangent line of the curved portion 2b at each contact point with the curved portion 2b. Needless to say, some deviation is acceptable. As shown in FIG. 8, the contact point between the first straight portion 2a and the second linear portion 2c and a curved portion 2b, respectively and _{P 1} and _{P 2,} the tangent of the curved portion 2b in the _{P 1} and _{P 2,} respectively When L ₁ and L ₂ are set, the opening angles θ ₁ and θ ₂ of the first straight line portion 2a and the second straight line portion 2c with respect to L ₁ and L ₂ are preferably 170 to 200 °.

  The cross-sectional shape of the longitudinal groove provided in the wooden flooring according to the present invention has a first straight part 2a, a curved part 2b, and a second straight part 2c successively from the surface side of the wooden decorative material. There is no particular limitation on the shape of the groove bottom side. As shown in FIG. 4, the contact between the second straight portions 2c may be the groove bottom, or as shown in FIG. 5, a flat bottom 2d may be provided at the groove bottom. Further, as shown in FIGS. 6 and 7, a V-shaped or square-shaped slit 2e may be further provided at the groove bottom.

  The width of the longitudinal groove is not particularly limited, but is preferably 4 to 6 mm from the viewpoint of design. However, since the first straight portion 2a has a small inclination, the width of the first straight portion 2a has little influence on the appearance of the groove. For this reason, it is preferable to adjust the width of the contact points between the first linear portion 2a and the curved portion 2b, and it is preferable to set the width to 3 to 5 mm. As described above, when a flat bottom or a slit is provided at the groove bottom, if the width of the flat bottom 2d or the maximum width of the slit 2e exceeds 1 mm, the groove bottom becomes conspicuous and the design is deteriorated. Therefore, it is preferable that the interval between the lowermost portions of the second linear portion 2b is 1 mm or less.

Also, the depth of the groove is not particularly limited, but in order to obtain an excellent material feeling and stereoscopic effect, the groove depth in the first straight portion 2a, the curved portion 2b and the second straight portion 2c is It is preferable to have a relationship that satisfies the following formula (i).
0.4 ≦ (d1 + d2) / (d1 + d2 + d3) ≦ 0.6 (i)
However, the meaning of each symbol in the above formula (i) is as follows.
d1: Groove depth in the first straight line part (mm)
d2: groove depth (mm) in the curved portion
d3: Groove depth (mm) in the second straight portion

  Furthermore, it is desirable to determine the depth from the floor surface 1a to the lowest part of the second linear portion, that is, the value of d1 + d2 + d3, in relation to the thickness of the wooden decorative material, as will be described later.

  As shown in FIG. 9, the wood floor material according to the present invention is preferably formed by chamfering the joint portions in the longitudinal direction between adjacent floor materials to form the recesses 23. Although there is no particular limitation on the cross-sectional shape of the concave portion 23 at the joint location, it is preferable to have a shape having a straight portion and a curved portion, similar to the cross-sectional shape of the longitudinal groove 22. In order to align the appearance of the concave portion 23 and the vertical groove 22 at the joining location, the width of the concave portion at the time of joining to the adjacent flooring is the same as the width of the vertical groove, and the depth of the concave portion is greater than the depth of the vertical groove. It is desirable to process so as to be shallow.

  In addition, as shown in FIG. 9, the wooden flooring according to the present invention may be provided with lateral grooves 24 in the short direction of the flooring, that is, in the direction orthogonal to the longitudinal grooves 22. The cross-sectional shape of the lateral groove 24 is not particularly limited, but is preferably a shape having a straight portion and a curved portion. Further, like the vertical groove, a flat bottom or a slit may be provided at the bottom of the horizontal groove. Usually, the woody decorative material is manufactured so that the direction of the fibers is the longitudinal direction. For this reason, the slope of the lateral groove 24 is generally a butt face. Since the paint is easily sucked into the end of the wood and color tends to enter, it is desirable to make the lateral groove smaller and shallower than the vertical groove in order to align the appearance with the vertical groove.

2. Flooring material As shown in FIG. 9, the wooden flooring according to the present invention includes at least a wooden decorative material 11 and a wooden base material 12. The thickness of the wooden decorative material is not particularly limited, and a thin plate of about 0.2 to 0.6 mm may be used as the wooden decorative material. However, from the viewpoint of improving the texture, that is, the wood texture, the thickness of the wooden decorative material is preferably 1.0 mm or more, more preferably 1.5 mm or more, and 2.0 mm or more. Further preferred.

  By using a thick plate of 1.0 mm or more as the wooden decorative material, it becomes possible to form the longitudinal grooves without reaching the wooden base material. Only the wooden decorative material is exposed in the longitudinal groove cross section, and it is preferable that the wooden base material does not appear because a texture equivalent to that of a solid material can be obtained.

  When a thick plate of 1.0 mm or more is used as the wooden decorative material, the depth from the floor material surface 1a to the lowermost portion of the second linear portion, that is, the value of d1 + d2 + d3 is 60 to 90 of the thickness of the wooden decorative material. % Is preferable. If it is less than 60%, the groove is shallow, and only a design similar to that when a thin plate is used as a decorative material can be obtained, and it is difficult to obtain the merit of using a thick plate. On the other hand, if it exceeds 90%, the groove becomes deep, and the width of the groove becomes too large along with it, so that the design property may be deteriorated.

  On the other hand, from the economical point of view, the thickness of the wooden decorative material is preferably 5 mm or less, more preferably less than 3 mm.

  As the wood substrate, plywood, wood fiber material, solid wood, laminated wood, or a combination thereof can be used as appropriate. When using a thick plate of 1.0 mm or more as the woody decorative material, it is desirable to use a plywood in order to suppress shape deformation such as warping of the decorative material due to moisture.

  Although there is no restriction | limiting in particular also about the thickness of a wooden base material, For example, the thing of thickness 10mm can be used. Moreover, as for the thickness as the whole flooring 1 which combined the wooden decorative material 11 and the wooden base material 12, the thing of 12 or 15 mm is good, for example. Although there is no restriction | limiting in particular about the magnitude | size of the flooring 1, For example, the width | variety of 145,150,300,303mm and length 909,1818mm can be used.

  The wooden floor material according to the present invention may be used as a so-called direct-bonded floor by further attaching a cushion material such as foamed resin or nonwoven fabric to the lower side of the wooden base material.

3. Manufacturing method Hereinafter, the manufacturing method of the wooden flooring which concerns on this invention is illustrated, However, It is not limited to this manufacturing method.

  First, a wooden decorative material is affixed to a wooden base material, and then longitudinal grooves are formed by cutting on the surface side of the wooden decorative material. At this time, in addition to the vertical groove, a chamfering process may be performed on a joint portion with an adjacent floor material, or a horizontal groove may be formed.

  The first straight part, the curved part and the second straight part of the cross section of the longitudinal groove may be formed separately, but from the viewpoint of productivity, they correspond to the first straight part, the curved part and the second straight part. It is preferable to form simultaneously using a circular saw or the like having a shape. At this time, a flat bottom can be provided at the groove bottom by flattening the tip of the circular saw.

  As described above, when a thick plate of 1.0 mm or more is used as the woody decorative material, it is preferable to form the longitudinal grooves so as not to reach the woody base material in order to obtain a material feeling equivalent to that of solid wood.

  Further, a V-shaped or square-shaped slit may be formed at the groove bottom. Although there is no restriction | limiting in particular in the formation method of a slit, For example, it can form with a circular saw or a pressing die. The slit can be formed in part or all of the longitudinal groove and / or part or all of the lateral groove.

  As described above, when a thick plate is used as the wooden decorative material, the longitudinal groove is preferably formed so that the lowermost portion of the second straight portion does not reach the wooden base material, but the slit provided in the groove bottom is made of wood. It is preferable to form so as to reach the substrate. The reason is as follows.

  When the slit reaches the wooden base material, the wooden decorative material is completely divided at that portion. In general, when thick wooden decorative materials are used, shape deformation such as warping due to moisture may increase, but when wooden decorative materials are divided by the above slits, stress is dispersed and shape deformation such as warping occurs. It becomes difficult.

  According to the present invention, the familiarity of the paint and the like to the vertical groove is good, and there is no problem of unevenness at the end of the groove. Can be obtained. Therefore, the wood floor material of the present invention is suitable for use as an interior material of a building.

1. Flooring 1a. Floor material surface 1b. Groove end 2. Groove 2a. 1st straight part 2b. Curved part 2c. Second straight part 2d. Flat bottom 2e. Slit 11. Woody decorative material12. Wood substrate 21. Curvature circle 22. Longitudinal groove 23. Concave portion of joint portion between floor materials 24. Lateral groove

Claims (4)

It is composed of at least a wooden decorative material and a wooden base material, and is a wooden flooring provided with longitudinal grooves on the surface side of the wooden decorative material,
The cross-sectional shape of the inclined surface of the vertical groove continues in order from the surface side of the wooden decorative material, the first straight portion, the curved portion protruding outward from the inclined surface (except for the case including a concave curve ) and the first . A wooden flooring comprising two straight portions (except when the inclination angle of the second straight portion with respect to the surface of the wooden decorative material is 90 °) . The inclination angle of the first straight portion with respect to the surface of the wooden decorative material is 2.5 to 20 °,
The radius of curvature of the curved portion is 2 to 4 mm, and
The wooden flooring according to claim 1, wherein an inclination angle of the second straight portion with respect to the surface of the wooden decorative material is 45 to 60 °.   The opening angle of the first straight portion with respect to the tangent of the curved portion at the contact point between the first straight portion and the curved portion, and the tangent to the curved portion at the contact point between the second straight portion and the curved portion. The wooden flooring according to claim 1 or 2, wherein both the opening angles of the second straight portions are 170 to 200 °. The wood flooring according to any one of claims 1 to 3, wherein groove depths in the first straight portion, the curved portion, and the second straight portion satisfy the following expression (i). .
0.4 ≦ (d1 + d2) / (d1 + d2 + d3) ≦ 0.6 (i)
However, the meaning of each symbol in the above formula (i) is as follows.
d1: Groove depth in the first straight line part (mm)
d2: groove depth (mm) in the curved portion
d3: Groove depth (mm) in the second straight portion