JP5941104B2 - 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 22 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 by 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 line of the curvature circle 21 having the radius of curvature R contacting the curve of the R groove 22 It is necessary to adjust the groove depth so as to coincide with the floor material 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 R groove 22 is formed such that the curvature circle 21 is below the floor material surface 1a, a step difference occurs at the groove end portion 1b, and the feeling of walking deteriorates. On the other hand, as shown in FIG. 3, when the R groove 22 is formed shallowly (FIG. 3A), the groove end depends on the groove depth as compared with the case where the R groove 22 is formed deeply (FIG. 3B). There is a problem that the inclination angle of the groove in the portion 1b varies and the quality of the flooring becomes unstable.

  In addition, as shown in FIG. 4, when the wooden flooring 1 is formed by attaching the wooden decorative material 11 to the surface of the wooden base material 12, the R groove 22 is formed on the wooden decorative material surface 11a. Since the curve of the R groove 22 is perpendicular to the wooden decorative material surface 11a at the groove bottom, the R groove 22 is easily formed deeply. When the R-groove 22 is formed deeply, the wooden substrate 12 may be exposed at the bottom of the groove, and a texture equivalent to that of a solid material cannot be obtained.

  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 following wooden flooring.

(1) A wooden flooring material comprising at least a woody decorative material and a woody base material, and having a longitudinal groove planned portion constituting a longitudinal groove after floor construction,
The longitudinal groove planned portion is continuously provided from the surface of the wooden decorative material,
And the cross-sectional shape of the slope of the longitudinal groove planned portion has, in order from the surface side of the wooden decorative material, a curved portion and a straight portion that protrude outward from the slope, and
The wooden flooring characterized in that the curved portion and the straight portion are arranged at positions satisfying the following formula (i) and the following formula (ii).
0 ≦ d1 / d2 ≦ 0.3 (i)
0.4 ≦ d2 / d3 ≦ 0.6 (ii)
However, the meaning of each symbol in the above formula (i) and the above formula (ii) is as follows.
d1: Depth (mm) from the surface of the wooden decorative material to the end point on the surface of the curved wooden decorative material
d2: Depth (mm) from the surface of the wooden decorative material to the end of the curved groove at the bottom of the longitudinal groove
d3: Depth (mm) from the surface of the woody decorative material to the end of the straight groove at the bottom of the longitudinal groove

(2) The woody material according to (1), characterized by having another straight line portion or another curved portion protruding outward from the inclined surface continuously to an end point of the straight groove portion on the vertical groove bottom side. Flooring.

  According to the present invention, the familiarity of the paint to the longitudinal groove planned portion constituting the longitudinal groove after the floor construction is good, and there is no problem caused by a difference in the groove end portion, so that it has stable quality and is equivalent to a solid material. A flooring material having a material feeling and a three-dimensional feeling and excellent in design 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 changes according to the depth of a groove | channel when forming an R groove, FIG.3 (a) shows the case where a groove | channel is deep, FIG.3 (b) The case where the groove is shallow is shown. It is a figure for demonstrating that a wooden base material will be exposed in a groove bottom part when forming an R groove. 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 where the curvature circle which contact | connects a curve part cross | intersects the flooring surface. It is sectional drawing which shows the flooring which concerns on this invention in which the tangent of the curvature circle | round | yen which touches a curve part corresponds to a flooring surface. It is sectional drawing which shows the flooring which concerns on this invention which provided the flat bottom in the vertical groove planned part bottom part. It is sectional drawing which shows the flooring which concerns on this invention which provided the V-shaped slit in the vertical groove planned part bottom part. It is sectional drawing which shows the flooring which concerns on this invention which provided the square-shaped slit in the bottom part of the longitudinal groove planned 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 concerning the present invention which shows a longitudinal groove and a transverse groove.

1. Vertical groove planned part The wooden flooring according to the present invention is composed of at least a wooden decorative material and a wooden base material, and has a vertical groove planned part that forms a vertical groove after floor construction. The longitudinal groove planned portion is continuously provided from the surface of the wooden decorative material, that is, the floor material surface. The vertical groove is a groove formed in the longitudinal direction of the wooden floor material in the floor on which the wooden floor material is constructed. As shown in FIG. 12, not only the longitudinal groove 22 formed in the wooden flooring 1 but also the chamfering process is performed on the planned longitudinal groove, which is a joint portion between adjacent wooden flooring 1 on the floor after construction. A portion (so-called “half groove”) which is provided and constitutes the longitudinal groove 23 is also included. In the wooden floor material, the longitudinal groove planned portion may be provided with both the longitudinal groove formed in the wooden floor material and the half groove subjected to the chamfering process, or only one of them may be provided.

  Hereinafter, the configuration of the longitudinal groove planned portion will be described mainly by taking the longitudinal groove formed in the wooden floor material as an example.

  As shown in FIGS. 5 to 10, in the wood floor material 1, the longitudinal groove planned portion 2 includes a curved portion 2 a and a straight line in which the cross-sectional shape of the slope protrudes outward in the cross-sectional shape of the slope in order from the floor surface 1 a side. It has the part 2b continuously.

In the wood floor material according to the present invention, the longitudinal groove planned portion 2 is disposed at a position where the curved portion 2a and the straight portion 2b satisfy the following expressions (i) and (ii). Further, by satisfying the expressions (i) and (ii), the width of the curved portion 2a protruding outward in the cross-sectional shape of the slope can be widened, and a material feeling and a three-dimensional feeling equivalent to those of a solid material can be obtained. Thus obtained flooring material having excellent design properties can be obtained.
0 ≦ d1 / d2 ≦ 0.3 (i)
0.4 ≦ d2 / d3 ≦ 0.6 (ii)
However, the meaning of each symbol in the above formula (i) is as follows.
d1: Depth (mm) from the floor material surface 1a to the end of the curved portion 2a on the floor material surface 1a side
d2: Depth (mm) from the floor surface 1a to the end of the curved groove 2a on the bottom side of the longitudinal groove
d3: Depth (mm) from the floor surface 1a to the end of the straight groove 2b on the bottom side of the longitudinal groove

  The curvature radius R of the curvature circle 21 with which the curved portion 2a is in contact is preferably 2 to 4 mm. If the radius of curvature R is less than 2 mm, the curved portion in the cross section of the longitudinal groove is reduced, and if it exceeds 4 mm, the curve becomes close to a straight line shape. This is because it is difficult to obtain a material feeling and a three-dimensional feeling.

  The longitudinal groove planned portion 2 may be formed such that a curvature circle 21 in contact with the curved portion 2a intersects the floor material surface 1a as shown in FIG. In addition, as shown in FIG. 7, it is preferable that the tangent of the curvature circle 21 coincides with the flooring surface 1a so that there is no difference in the groove end portion 1b and a smooth sectional shape is obtained. In these cases, d1 = 0, and d1 / d2 = 0 in the above equation (i).

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

  Furthermore, the longitudinal groove planned portion 2 has the straight portion 2b, so that the inclination angle near the bottom of the longitudinal groove planned portion can be adjusted, and when the paint is applied to the floor material surface, the paint etc. Fully adapts to the depth of the planned groove. In addition, since the straight portion 2b that satisfies the above formulas (i) and (ii) is provided, the vertical groove can be made shallower than in the case where the planned vertical groove portion is composed of only a curved portion (see FIG. 4). It is possible to prevent the woody base material from being exposed at the cross section or bottom of the planned longitudinal groove when forming the floor or during floor construction. It is preferable that only the wooden decorative material is exposed on the surface of the planned longitudinal groove portion 2, and if a wooden base material does not appear, a texture equivalent to that of a solid material can be obtained.

  If the inclination angle of the straight line portion 2b with respect to the floor material surface 1a is less than 45 °, the design property is deteriorated, and a paint pool or the like may occur in the longitudinal groove planned portion. On the other hand, if the inclination angle of the straight part 2b with respect to the floor surface 1a exceeds 60 °, not only is it difficult to make a cutter for forming the longitudinal groove planned part, but there is a possibility that the familiarity of the paint and the like may deteriorate. is there. Therefore, it is preferable that the inclination angle of the straight part 2b with respect to the flooring surface 1a is 45 to 60 °.

  If the cross-sectional shape of the longitudinal groove planned portion 2 has the curved portion 2a and the straight portion 2b successively from the floor material surface 1a side, and satisfies the above formulas (i) and (ii), There is no particular limitation on the shape of the portion of the floor material surface 1a side of the curved portion and the straight portion.

  It is preferable that the longitudinal groove planned part 2 has another straight part or another curved part continuously from the end of the curved part 2a on the floor material surface 1a side. The other curved part protrudes outward in the cross-sectional shape of the slope like the curved part 2a, and the curvature radius is different from that of the curved part 2a. In FIG. 5, the example which has the other linear part 2c following the end point by the side of the flooring surface 1a of the curved part 2a is shown. Thus, by providing another linear part or another curved part, it is possible to prevent a step difference in the groove end 1b.

"Continuous" about the longitudinal groove planned part in the wooden flooring of this invention is demonstrated. As shown in FIG. 11, the contact point between the straight line portion 2b and a curved portion 2a P _1, the point of contact with the other straight part 2c and a curved portion 2a and P _2, tangent to the curved portion 2a at the P ₁ and P ₂ Are L ₁ and L ₂ , respectively. At this time, the opening angle of the straight line portion 2b with respect to L ₁ is θ ₁ , and the opening angle of the other straight line portion 2c with respect to L ₂ is θ ₂ . Further, the contact point between the flooring surface 1a and the other straight portion 2c and P3, the inclination angle of the other straight part 2c with respect to the floor material surface 1a of the P3 and theta _3. In this case, “continuous” for the planned longitudinal groove portion of the present invention means that, for example, θ ₁ and θ ₂ are 160 to 210 °, and θ ₃ is 0 to 30 °. However, when θ ₃ is 0 °, the other straight portion 2c becomes a part of the floor material surface 1a. If the place of the other linear portion 2c providing another curve section, the opening angle relative to the tangent of the L ₂ other curved portion at the contact P ₂ and the angle theta _2, the other curved portion at the contact P ₃ the inclination angle with respect to the tangent of the flooring surface 1a and the angle theta _3, respectively and satisfy the angular range for other linear portion of the. When the longitudinal groove planned portion does not have the other straight portion 2c, the curved portion 2a is naturally continuous with the floor surface 1a if the above formula (i) and the above formula (ii) are satisfied.

When other straight portions 2c or other curved portions are provided, the inclination angle θ ₃ is preferably set to 2.5 to 20 ° in order to prevent a step difference in the groove end portion 1b and obtain a smooth cross-sectional shape. . The upper limit of the inclination angle θ ₃ is more preferably 15 °, and further preferably 10 °.

In order to obtain a smoother cross-sectional shape, it is most preferable that the straight line portion 2b and the other straight line portions 2c have an inclination angle that coincides with the tangent line of the curve portion 2a at each contact point with the curve portion 2a. Needless to say, some deviation is acceptable. The opening angles θ ₁ and θ ₂ shown in FIG. 11 are preferably 170 to 200 °. If the place of the other linear portion 2c providing another curve section, the tangent of the other curved portion at the contact P _2, the opening angle relative to L ₂ (the angle theta ₂₎ is in the range of 170 to 200 ° preferable.

  In addition, from the viewpoint of design and practicality, the cross-sectional shape of the longitudinal groove planned portion is preferably symmetrical with respect to the center of the longitudinal groove, that is, the longitudinal groove bottom after the floor construction. That is, it is preferable that the opening angle between the linear portions 2b facing each other is 60 to 90 °. When it has the other straight part 2c in the flooring surface 1a side of the curved part 2a, it is preferable that the opening angle of the other straight parts 2c is 140-175 degrees.

  If the cross-sectional shape of the longitudinal groove planned part provided in the wooden flooring according to the present invention has the curved part 2a and the straight part 2b sequentially from the flooring surface 1a side, the longitudinal groove bottom part side than these There is no particular limitation on the shape of the. As shown in FIGS. 5 to 7, the contact between the straight portions 2 b may be the bottom of the vertical groove, or the bottom of the vertical groove may be a flat bottom 2 d as shown in FIG. 8.

  Further, as shown in FIGS. 9 and 10, a V-shaped or square-shaped slit 2e may be further provided at the bottom of the vertical groove. FIG. 9 shows an example in which the V-shaped slit 2e is composed of another straight line portion that is continuous with the end point on the vertical groove bottom side of the straight line portion 2b. The V-shaped slit 2e may be composed of another curved portion that protrudes outward in the cross-sectional shape of the slope, which is continuous with the end point on the vertical groove bottom side of the straight portion 2b.

  The width of the longitudinal groove is not particularly limited, but is preferably 4 to 6 mm from the viewpoint of design. Therefore, it is preferable to adjust the width between the end points on the floor material surface 1a side of the curved portion 2a, and preferably 3 to 5 mm. As described above, when a flat bottom or slit is provided at the bottom of the vertical groove, if the width of the flat bottom 2d or the maximum width of the slit 2e exceeds 1 mm, the bottom of the vertical groove becomes conspicuous and the design is deteriorated. Therefore, the interval between the lowermost portions of the straight line portion 2b is preferably 1 mm or less. Even when the curved portion 2a has another straight portion 2c or another curved portion on the floor surface 1a side, the other straight portion 2c or the other curved portion has a small inclination and the appearance of the vertical groove. Therefore, the width of the other straight part 2c or the other curved part is not considered.

  Furthermore, it is desirable to determine the value of the depth d3 from the floor material surface 1a to the end point on the vertical groove bottom side of the linear portion 2b in relation to the thickness of the woody decorative material, as will be described later.

  As described above, the longitudinal groove planned portion of the wood floor material according to the present invention is a joint portion in the longitudinal direction between adjacent floor materials 1 in the floor after construction as shown in FIG. And a half groove that constitutes the longitudinal groove 23 is also included. The half groove also has the same shape as the planned vertical groove portion formed as the vertical groove 22 in the above-described wooden floor material. In order to align the appearance of the longitudinal groove 23 at the joining location and the longitudinal groove 22 formed in the wooden floor material, the width of the longitudinal groove 23 at the time of joining to the adjacent floor material is the same as the width of the longitudinal groove 22. It is desirable to process so that the depth of the vertical groove 23 is shallower than the depth of the vertical groove 22.

  Moreover, as shown in FIG. 12, the wooden flooring which concerns on this invention may provide the horizontal groove 24 in the transversal direction of a flooring, ie, the direction orthogonal to the vertical groove 22 and the vertical groove 23. As shown in FIG. 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. Moreover, you may provide a flat bottom or a slit in the groove bottom part of a horizontal groove similarly to a vertical 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 that the width of the horizontal groove 24 is smaller than that of the vertical groove 22 and the depth is shallower in order to align the appearance with the vertical groove 22.

2. Flooring material As shown in FIG. 12, the wooden flooring 1 according to the present invention is composed of at least a woody decorative material 11 and a woody base material 12. There is no restriction | limiting in particular about the thickness of a wooden decorative material, You may use a thin board about 0.2-0.6 mm as a 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. As described above, 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 material feeling 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 value of the depth d3 from the floor material surface 1a to the end of the straight groove 2b on the vertical groove bottom side is 60 to the thickness of the wooden decorative material. 90% is preferable. If it is less than 60%, the longitudinal groove is shallow, and only a design similar to that obtained when a thin plate is used as a decorative material is obtained, and it is difficult to obtain the merit of using a thick plate. On the other hand, if it exceeds 90%, the vertical groove is deep, and the width of the vertical 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 wooden 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 wooden 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 bonding 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 a longitudinal groove planned portion is formed by cutting on the surface side of the wooden decorative material and / or chamfering of a joint portion with an adjacent floor material. At this time, in addition to the longitudinal groove planned portion, a lateral groove or further a half groove thereof may be formed.

  The curved portion and straight portion of the cross section of the planned longitudinal groove portion, and other straight portions or curved portions continuing to the end points of these curved portions or straight portions may be formed separately, but from the viewpoint of productivity. It is preferable to form them simultaneously by using a circular saw or the like having a shape corresponding to the straight part and the curved part and the other straight part or curved part. At this time, a flat bottom can be provided at the bottom of the longitudinal groove 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 bottom of the vertical groove. 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 straight portion does not reach the wooden base material, but the slit provided at the bottom of the longitudinal groove is a wooden base. It is preferable to form so as to reach the material. 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 to the longitudinal groove planned portion constituting the longitudinal groove after the floor construction is good, and there is no problem caused by a difference in the groove end portion, so that it has stable quality and is equivalent to a solid material. A flooring material having a material feeling and a three-dimensional feeling and excellent in design can be obtained. Therefore, the wood floor material of the present invention is suitable for use as an interior material of a building.

1. Wood flooring 1a. Floor material surface 1b. Groove end 2. Planned groove portion 2a. Curved part 2b. Straight line portion 2c. Other straight portions 2d. Flat bottom 2e. Slit 11. Woody decorative material 11a. Woody decorative material surface 12. Wood substrate 21. Curvature circle 22. Longitudinal groove 23. Longitudinal grooves at joints between floor materials 24. Lateral groove

Claims (2)

It is composed of at least a woody decorative material and a woody base material, and is a wooden flooring material having a longitudinal groove planned portion constituting a longitudinal groove after floor construction,
The longitudinal groove planned portion is continuously provided from the surface of the wooden decorative material,
And the cross-sectional shape of the slope of the longitudinal groove planned portion has, in order from the surface side of the wooden decorative material, a curved portion and a straight portion that protrude outward from the slope, and
The wooden flooring characterized in that the curved portion and the straight portion are arranged at positions satisfying the following formula (i) and the following formula (ii).
0 ≦ d1 / d2 ≦ 0.3 (i)
0.4 ≦ d2 / d3 ≦ 0.6 (ii)
However, the meaning of each symbol in the above formula (i) and the above formula (ii) is as follows.
d1: Depth (mm) from the surface of the wooden decorative material to the end point on the surface of the curved wooden decorative material
d2: Depth (mm) from the surface of the wooden decorative material to the end of the curved groove at the bottom of the longitudinal groove
d3: Depth (mm) from the surface of the woody decorative material to the end of the straight groove at the bottom of the longitudinal groove 2. The wooden flooring according to claim 1, further comprising another straight line portion or another curved portion protruding outward from the inclined surface continuously to an end point on the vertical groove bottom side of the straight line portion.

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