JP5808463B2 - Flooring - Google Patents

Description

The present invention is detached for example, when scratches or breakage occurs about the easy flooring.

It may be necessary to remove one or several damaged floor materials and replace them with new floor materials after connecting the floor materials through the mating of the male and female. is there. In such a case, conventionally, a floor adjacent to the flooring is removed after making a cut from the surface along the outer peripheral edge of the flooring to be removed and removing the flooring part inside the cut. The fitting part with the material was removed.

JP 2001-262815 A

However, according to such a conventional technique, when a cut is formed or a fitting portion is removed, an adjacent floor material may be damaged. In addition, dust and dirt are generated when the cut is formed, which deteriorates the working environment and also requires cleaning of the generated dust and dirt. It has also been proposed that the flooring can be easily peeled off by applying the adhesive to the part of the back surface of the flooring in a dotted or linear manner to weaken the adhesive strength to the floor base ( In this case, however, the fitting part (particularly the female lower projection) cannot be removed because it becomes an obstacle, and eventually the fitting part must be excised as in the prior art. Don't be.

Therefore, the problem to be solved by the present invention is to make it easy to remove a floor material that has been damaged or broken and to prevent dust from being generated during the removal.

In order to solve this problem, the present invention has a substantially rectangular shape in plan view, and a male and a female are formed on two adjacent sides, respectively, and the ground is connected to each other through the fitting between the male and the female. In the floor material that can be removed after being applied to the material, the back surface of the floor material is located at a position of 2.0 to 15.5 mm from the back of the female fruit to the male side on the two adjacent sides where the female fruit is formed. Grooves are formed from the side toward the surface side, and the floor material is broken when the floor material is removed . Each groove is preferably formed to a depth not less than the height of the lower protrusion forming the female fruit and not reaching the lower surface of the upper protrusion.

(Delete)

According to the present invention, when removing a floor material that has been damaged or damaged, when a portion close to the female body of the floor material is pulled upward, the groove formed on the back side of the female body is used as a starting point. Since the portion including the actual downward protrusion is broken, the flooring can be easily removed. The groove is formed at a position of 2.0 to 15.5 mm from the back of the female fruit to the male fruit side. If the groove position is smaller than 2.0 mm, the distance from the end of the floor on the female side will be too short, and if there is unevenness in the ground, it will be damaged during construction or the strength will be insufficient. In order to ensure the strength of the whole flooring and the lower protrusion of the female fruit, the distance from the female body rear part to the groove is 2.0 mm, preferably 8.5 mm or more. On the other hand, if this distance exceeds 15.5 mm, it will be too far from the end of the floor material on the female side, and it will be difficult to break even if the floor material to be removed is pulled up, and there will be a portion that remains on the floor substrate after the break The removal operation becomes difficult or complicated.

Furthermore, the floor to be removed is formed by forming the groove at a depth not less than the height of the lower protrusion that forms the female seed from the back surface of the floor material and not reaching the lower surface of the upper protrusion. When the material is pulled up, the portion including the female lower protrusion is more easily broken.

According to the present invention, when removing a floor material that has been damaged or damaged after construction, the floor material can be easily removed simply by pulling up the floor material, and it is necessary to form a cut in the interior as in the prior art. Since there is no dust, no dust is generated and no cleaning is required.

Also, when removing the flooring, attach a locking jig to the surface side of the flooring near the intersection of the grooves, and lift the flooring by locking the tool to the locking jig. If it is made, removal work can be performed smoothly and workability is improved.

It is sectional drawing (a) and the female real part expanded sectional view (b) of the flooring by one Embodiment of this invention. Cross-sectional view (a) is a cross-sectional view taken along line AA in FIG. It is a back view of this flooring. It is a construction state sectional view of this flooring. It is explanatory drawing when removing the constructed flooring. It is an expanded sectional view which illustrates the composition of the female real part of the flooring which can be used instead of the removed flooring. It is construction state sectional drawing of the flooring illustrated in FIG. It is sectional drawing (a) of the flooring by other embodiment of this invention, and a female real part enlarged sectional view (b). It is a base material back view of this flooring. It is a construction state sectional view of this flooring. It is explanatory drawing when removing the constructed flooring. It is an expanded sectional view which illustrates the composition of the female real part of the flooring which can be used instead of the removed flooring. It is construction state sectional drawing of the flooring illustrated in FIG. It is a reverse view of the flooring by further another embodiment of the present invention. It is a reverse view of the flooring by further another embodiment of the present invention. It is a reverse view of the flooring by further another embodiment of the present invention. It is explanatory drawing which shows the fracture | rupture state of this male side when removing a flooring in embodiment which formed the groove | channel also on the male side. It is a perspective view of the jig | tool for a latch used when removing a flooring. It is a perspective view explaining the operation | work at the time of attaching to the floor material which should remove this latching jig | tool. It is a fragmentary sectional view in the state where this locking jig was attached. It is a perspective view explaining the operation | work at the time of pulling up a flooring by applying a bar to this latching jig. It is sectional drawing explaining the operation | work similar to FIG.

Hereinafter, the present invention will be described in detail with reference to examples. However, the present invention is not limited to these examples, and various modifications can be made within the scope of the invention defined by the description of the scope of claims. obtain.

FIG. 1 shows a flooring 1 according to an embodiment of the present invention, that is, a flooring 1 having a substantially rectangular shape in plan view in which a male fruit 2 and a female fruit 3 are formed on two adjacent sides by actual machining. Yes. FIG. 1 is a cross-sectional view of the flooring 1 cut along the short direction (width direction), and shows a male fruit 2 and a female fruit 3 formed at both ends in the short direction. Similarly, a male fruit 2 and a female fruit 3 are formed at both ends in the longitudinal direction (length direction) (FIG. 2).

The material of the flooring 1 is not particularly limited, and is made of a single or arbitrary combination of wood substrates such as plywood, wood fiber board, OSB, etc., and high-density soft resin sheet, rubber sheet, foamed resin. A laminated plate or a composite plate obtained by laminating sheet materials such as sheets can be used as long as the lower protrusion of the female body is broken when pulled up after construction.

In this floor material 1, a groove extending over the entire length in the longitudinal direction of the floor material 1 at a position of 2.0 (preferably 8.5) to 15.5 mm from the back part 3 a of the female fruit 3 to the male fruit 2 side. 4 and the grooves 5 extending over the entire length in the short direction are respectively equal to or higher than the height of the lower protrusion 3b forming the female fruit 3 from the floor material rear surface 1b side to the front surface 1a side. It is formed to a depth up to a height not reaching the lower surface of 3c (FIG. 1 (b)). The groove depth is generally in the range of 1.5 to 8 mm. For example, the grooves 4 and 5 are formed as having a depth of 2.5 mm for a 6 mm thick floor material and 5.5 mm for a 12 mm thick floor material. Is done. The width of the grooves 4 and 5 is about 1 to 5 mm. The shape of the grooves 4 and 5 may be a U-shaped cross section, a V-shaped cross section, or a shape in which the back of the U-shaped cross section is sharpened to a V-shape, and is not particularly limited. .

FIG. 3 is a sectional view of the floor material 1 in the construction state. The floor materials 1 and 1 are arranged on the base material 6 to which the adhesive 8 (FIG. 4) is applied so that the male 2 and the female 3 are fitted. It is connected through. More specifically, the floor material 1 (the floor material 1 on the left side in FIG. 3) is put through the adhesive while the male fruit 2 of the existing floor material 1 (the floor material 1 on the right side in FIG. 3) is fitted to the female fruit 3. After attaching to the base material 6, a nail 7 is driven from the vicinity of the base of the protrusion of the male 2 to fix the base material 6. Instead of the adhesive, a double-sided tape or a hook-and-loop fastener may be attached to the floor material back surface 1b and fixed to the base material 6. Adhesive can be applied to the surface of the protrusion of the male fruit 2 and / or the inner surface of the female fruit 3 to reinforce the fitting between the adjacent floor materials 1 and 1. Further, screws or staples may be used in place of the nail 7.

In addition, it is preferable to use what added the inorganic type filler to the urethane type adhesive as the adhesive agent 8 used when constructing the flooring 1 to the base material 6. FIG. By adding the filler, the adhesive force can be weakened to facilitate the removal of the flooring 1, and the effect of increasing the adhesive can also be obtained. As the filler, for example, powdered calcium carbonate can be used. An adhesive having a peel strength smaller than the interlayer peel strength of the flooring 1 is used.

If the floor material 1 constructed as shown in FIG. 3 is damaged or damaged and needs to be removed for replacement with a new floor material, as shown in FIG. By pulling up the flooring 1 (flooring 1 in the center of FIG. 4) upward, the portion 3d including the lower protrusion 3b of the female fruit 3 is broken from the grooves 4 and 5 formed on the back side of the female fruit 3. Then, the mating of the adjacent floor material (the floor material 1 on the right side of FIG. 4) with the male 2 is released. And by pulling up the raised floor material 1 obliquely to the female fruit 3 side, the male fruit 2 is pulled out from the fitting with the female fruit 3 of the adjacent floor material on the opposite side (the floor material 1 on the left side of FIG. 4), The flooring 1 can be removed. The nail 7 driven from the male 2 side is pulled out from the base material 6 together with the floor material 1 being pulled up. Specific work for lifting the flooring 1 will be described later.

After the floor material 1 is removed in this way, the adhesive 8 and the double-sided tape remaining on the surface 6 of the floor base where the floor material 1 is removed, and the fragments of the floor material 1 generated when the floor material 1 is removed are removed with a spatula. Remove using etc. In addition, the broken portion 3d including the female bottom projecting portion 3b of the removed flooring 1 is adhered to the floor base 6 below the projecting portion of the male 2 of the adjacent flooring 1 (the flooring 1 on the right side in FIG. 4). The broken portion 3d is similarly removed with a spatula or the like.

As floor materials to be constructed in place of the removed floor material 1, floor materials 9a and 9b having a female real part shape as illustrated in FIGS. 5A and 5B can be used. The replacement flooring materials 9a and 9b are constructed so as to be fitted from above between the existing flooring materials 1 and 1 adjacent to both sides of the removed flooring material 1 (the flooring materials 1 and 1 on the right and left sides in FIG. 4). Therefore, it is necessary to cut out the female lower protrusion 3b.

The floor material 9a is formed by cutting the female fruit lower protrusion 3b by cutting substantially horizontally from the female fruit deep part 3a of the floor material 1 toward the grooves 4 and 5, and the female fruit upper protrusion 3c. A space 10a defined by the back surface 4a of the groove 4 and the side surface 4b on the male body 2 side is formed from the bottom surface. As shown in FIG. 6 (a), the flooring 9a is coated with an adhesive on the surface of the floor base 6 smoothed by removing the adhesive 8 and the like after the flooring 1 is removed, and on the right side of FIG. After the adhesive is also applied to the upper surface of the protruding portion of the male fruit 2 of the adjacent floor material 1, the male fruit 2 (not shown in FIG. 6 (a)) is placed on the left side of FIG. 3, and the male fruit 2 of the right adjacent flooring 1 can be fitted and constructed so that the female fruit upper protrusion 3 c is accommodated in the space 10 a after the female fruit lower protrusion 3 b is cut. .

The floor material 9b is obtained by cutting the female lower projection 3b by cutting substantially perpendicularly from the back surface 1b side near the base of the female lower projection 3b of the floor material 1 toward the female rear portion 3a. There is a space 10b defined by a cut surface extending from the lower surface of the female upper projection 3c to the female rear portion 3a. In this flooring 9b, the grooves 4 and 5 formed in the original flooring 1 are left as they are, and a thin plate-like lower protrusion 3e is provided. This flooring 9b can also be constructed in the same manner as the above-mentioned flooring 9a (FIG. 6B).

Since these female floors 9a and 9b have a female lower projection 3b that is fitted below the male fruit 2, they are further damaged and damaged after construction and can be replaced with new flooring. Therefore, when it is necessary to remove it, it can be easily removed by simply pulling up the female fruit 3 side obliquely and pulling out the male fruit 2 from the fitting with the female fruit 3 on the adjacent flooring.

Although the removal of the broken portion 3d including the female lower protrusion 3b of the floor material 1 that has been removed has already been described, it is not necessary to remove all the broken portions 3d (FIGS. 6A and 6B). However, it is practically sufficient to remove the fractured portion 3d so that it does not get in the way when the flooring materials 9a, 9b are constructed (in other words, the portion that remains after removal is completely accommodated in the spaces 10a, 10b). . In general, since it is often applied without applying an adhesive to the back surface of the female lower projection 3b, in such a case, it can be easily removed by pulling out the broken portion 3d.

In the above description, the figure which shows the cross section of the flooring 1 in the transversal direction about the operation | work which removes the flooring 1, and the work which constructs the flooring 9a, 9b for replacement | exchange in the space of the removed flooring 1 (FIG. 4,). Although reference is made to FIG. 6, it goes without saying that the same operation is performed in the longitudinal section of the flooring 1. That is, in the same manner as described above and shown in FIG. 4, the female body 3 side extending in the short direction of the flooring 1 is also pulled up so that the opposite male body 2 is engaged with the female body 3 of the adjacent flooring. The flooring 1 is removed by pulling out. Further, in the same manner as described above and shown in FIG. 6, the male fruit 2 extending in the short direction of the replacement flooring materials 9a and 9b is fitted to the female fruit 3 of the adjacent flooring material, so The replacement flooring is applied by covering the male 3 of the adjacent flooring 1 on the opposite side with the portion 3c.

FIG. 7 shows a soundproof flooring 11 in which a cushioning material 12 is adhered to the back surface of a woody base material 1 such as MDF as a flooring according to another embodiment of the present invention. Since the wooden substrate 1 has substantially the same configuration as the flooring 1 of the above-described embodiment, the same or corresponding parts are denoted by the same reference numerals and their detailed description is omitted. A material having excellent cushioning properties such as polyurethane foam and other resin foam resin sheets is used for the cushioning material 12 to enhance soundproofing as a flooring material. The cushion material 12 is adhered to the back surface of the wooden substrate 1 with a common adhesive such as an epoxy adhesive. In addition to the grooves 4 and 5 that are the starting points of breakage when the floor material is removed, a back groove 13 is provided on the back surface of the wooden base material 1 to weaken the rigidity of the wooden base material 1 and improve sound insulation. It is formed (FIG. 8). In this example, a plurality of back grooves 13 extending in the short direction of the flooring 11 are formed at predetermined intervals. However, back grooves extending in the longitudinal direction may be formed. Back groove formation is well known in the art and is not directly related to the subject matter of the present invention, and will not be described in further detail.

FIG. 9 is a sectional view showing the construction of the flooring 11, where the flooring 11, 11 is placed on the base material 6 coated with an adhesive (not shown) to fit the male 2 and the female 3. It is connected through. This construction state is also substantially the same as that of the above-described embodiment, and each flooring 11 is fixed to the base material 6 with a nail 7 driven from the vicinity of the base of the protrusion of the male base 2 of the wooden substrate 1.

The removal work when the floor material 11 thus constructed is damaged or broken and needs to be removed for replacement with a new floor material can be performed in the same manner as in the above-described embodiment. . That is, as shown in FIG. 10, the floor material 11 to be removed (the floor material 11 in the center of FIG. 10) is pulled up by using a suction cup or the like, so that it is formed on the rear back side of the female fruit 3. The portion 3d including the lower protrusion 3b of the female fruit 3 is broken from the grooves 4 and 5, and the fitting of the adjacent floor material 11 (the floor material 11 on the right side of FIG. 10) with the male fruit 2 is released. And by pulling up the raised floor material 11 diagonally to the female fruit 3 side, the male fruit 2 is pulled out from the fitting with the female fruit 3 of the adjacent floor material on the opposite side (the floor material 11 on the left side of FIG. 10), The flooring 11 can be removed. The nail 7 driven from the male 2 side is pulled out from the base material 6 together with the floor material 11 being pulled up.

The flooring 11 is a soundproofing flooring material in which a cushioning material 12 is adhered to the back surface of a woody base material 1 such as MDF, and a back groove 13 extending in the short direction is formed on the back surface of the base material 1 at a predetermined interval. A plurality are formed. For this reason, the groove 4 extending in the longitudinal direction is orthogonal to the back groove 13, and the female lower projection 3b near the groove 4 is divided into a plurality of sections by the back groove 13 (FIG. 8). Therefore, when the flooring 11 is pulled up at the time of detachment, breakage occurs in each section, and it can be broken even with a slight pulling force, so that the detachment can be performed more easily.

Then, the adhesive 8 and the double-sided tape remaining on the surface of the floor base 6 at the removed location, and the fragments of the floor material 11 generated when the floor is removed are removed using a spatula or the like. In addition, the floor portion 11 d (and the cushion material 12 ′ of the portion pasted on the back surface thereof) including the female lower protrusion 3 b of the floor material 11 removed is adjacent to the floor material 11 (the floor material on the right side in FIG. 10). 11) Since it is left in a state of being bonded to the floor base 6 below the protruding portion of the male fruit 2, the broken portion 3d is also removed with a spatula or the like.

As the floor material to be constructed in place of the removed floor material 11, floor materials 14a and 14b having a female real part shape as illustrated in FIGS. 11A and 11B can be used. The replacement flooring materials 14a and 14b are constructed so as to be fitted from above between the existing flooring materials 11 and 11 adjacent to both sides of the removed flooring material 11 (the flooring materials 11 and 11 on the right and left sides in FIG. 10). Therefore, it is necessary to cut out the female lower protrusion 3b.

The floor material 14a is formed by cutting the female fruit lower protrusion 3b by cutting substantially horizontally from the female fruit inner part 3a of the floor material 11 toward the grooves 4 and 5, and the female fruit upper protrusion 3c is cut off. A space 15a defined by the back surface 4a of the groove 4 and the side surface 4b on the male side 2 is formed from the lower surface. As shown in FIG. 12 (a), the flooring 14a is coated with an adhesive on the surface of the floor base 6 smoothed by removing the adhesive 8 and the like after the flooring 11 is removed, and on the right side of FIG. After the adhesive is also applied to the upper surface of the projecting portion of the male fruit 2 of the adjacent floor material 11, the male fruit 2 (not shown in FIG. 12 (a)) is placed on the left side of FIG. 3, the male fruit 2 of the right adjacent flooring 11 can be fitted into the female fruit upper protrusion 3 c so as to be accommodated in the space 14 a after the female fruit lower protrusion 3 b is cut, and can be constructed. .

The floor material 14b is obtained by cutting the female fruit lower protrusion 3b by cutting substantially perpendicularly from the female real back part 3a of the floor material 11 toward the back surface. A space 15b defined by a cut surface along the actual back portion 3a is formed. This flooring 14b can also be constructed in the same manner as the above-mentioned flooring 14a (FIG. 12B).

Since these floor materials 14a and 14b have a female bottom projection 3b that is fitted below the male body 2, they are further damaged and damaged after construction, so that they can be replaced with new floor materials. Therefore, when it is necessary to remove it, it can be easily removed by simply pulling up the female fruit 3 side obliquely and pulling out the male fruit 2 from the fitting with the female fruit 3 on the adjacent flooring.

In addition, when removing the fracture | rupture part 3d and the cushioning material 12 'including the lower part 3b of the real fruit of the floor material 11 which removed, all these remaining parts need to be removed (FIG. 12 (a), (b)). However, when the flooring 14a, 14b is constructed, it is practically sufficient to remove the remaining part so that it does not get in the way (in other words, the part still remaining after the removal is completely accommodated in the spaces 15a, 15b). is there.

In FIG. 10, when the soundproof flooring 11 is removed, the cushion material 12 on the back surface side of the lower protrusion 3b of the female fruit 3 is torn off, and the ground part is formed as a broken part 12 'together with the broken part 3d of the female lower protrusion 3b. Although it is shown to remain on the material 6, depending on the adhesive strength and bonding location of the adhesive 8, the density of the cushion material 12, etc., the entire cushion material 12 is pulled out together with the base material 1, and the female 3 In some cases, only the broken portion 3d of the lower protrusion 3b is left. In any case, the replacement floor materials 14a, 14b can be easily constructed as described above, since the female lower projection 3b is cut away.

In the above description, the figure which shows the cross section of the flooring 11 in the transversal direction about the operation | work which removes the flooring 11 and the operation | work which constructs the flooring 14a and 14b for replacement | exchange in the space of the removed flooring 11 (FIG. 10, Although reference was made to FIG. 12, it goes without saying that the same operation is performed in the longitudinal section of the flooring 11. That is, in the same manner as described above and shown in FIG. 10, the side of the female body 3 extending in the short direction of the flooring 11 is also pulled up so that the opposite male body 2 is engaged with the female body 3 of the adjacent flooring. The flooring 1 is removed by pulling out. Further, in the same manner as described above and shown in FIG. 12, the male fruit 2 extending in the short direction of the replacement flooring materials 14a and 14b is fitted to the female fruit 3 of the adjacent flooring material, so The replacement flooring is applied by covering the male 3 of the adjacent flooring 1 on the opposite side with the portion 3c.

FIG. 13 shows a flooring according to still another embodiment of the present invention. The flooring 1 has substantially the same configuration as the flooring 1 according to the first embodiment (see FIG. 2 in particular), but extends over the entire length of the flooring 1 in the longitudinal direction and over the entire length of the lateral direction. The extending groove 5 is different in that the formation positions of the female seeds 3 and 3 from the back portions 3a and 3a are different from each other. For example, in the flooring 1 using a 6 mm-thick MDF as a substrate, the groove 4 extending in the longitudinal direction is located at a position 11 mm from the female real inner part 3 a, and the groove 4 extending in the short direction is formed from the female real inner part 3 a to 14. In the flooring 1 which is formed at a position of 5 mm and uses a 12 mm-thick plywood as a substrate, the groove 4 extending in the longitudinal direction is located at a position 9.5 mm from the female back part 3a and the groove 4 extending in the short direction is female. It can form in the position of 13 mm from the real back part 3a. Thus, if the formation position of the grooves 4 and 4 is within the range of 2.0 (preferably 8.5) to 15.5 mm from the female real back part 3a, the groove formation position in each direction can be changed. good. The AA cross section is represented in the same manner as in FIG.

FIG. 14 shows a flooring according to still another embodiment of the present invention. In the flooring 1 according to Example 1 (especially, see FIG. 2), grooves 4 and 5 are formed at positions of 2.0 to 15.5 mm from the female back part 3a on the two sides adjacent to each other on the back side. On the other hand, in the flooring material of this embodiment, in addition to these grooves 4 and 5, a groove 5 ′ extending along the male fruit 2 extending in the short direction is formed, and three-way grooves 4 are formed on the back surface of the flooring material. The difference is that 5 and 5 'are formed. The groove 5 ′ is formed at a position of 2 to 15.5 mm, preferably 8.5 to 15.5 mm from the base of the protrusion of the male 2 toward the opposing female 3.

In particular, when the thickness of the flooring substrate is increased, the floor substrate is fixed to the floor base by a strong fixing means such as a nail. Therefore, only the grooves 4 and 5 are formed on the female back side of two adjacent sides. In this case, it is relatively easy to break the end portion 3d (FIG. 4) including the female lower projection 3b from the grooves 4 and 5 along these two sides, but the other 2 in which no groove is formed. If the side is firmly fixed on the side of the males 2 and 2, it may be difficult to remove the males 2 and 2. Therefore, in this embodiment, in addition to the grooves 4 and 5 on the back side of the female seeds 3 and 3, the groove 5 ′ is also formed on the back side of one of the male seeds 2 to form a three-way groove. Has solved.

When the floor material 1 of this embodiment is removed, the back side end portion 3d including the lower protrusions 3b, 3b extending from the grooves 4, 5 to the end on the side of the two adjacent female berries 3, 3 is broken. Since the portion from the groove 5 'to the end can be broken at the same time on the male 2 side where the groove 5' is formed, the removal work is easy even when the flooring is thick. . The breakage of the back surface side end portion 3d including the female lower projection 3b is performed in the same manner as described in the first embodiment with reference to FIG. On the side of the male 2 where the groove 5 ′ is formed, as shown in FIG. 16, when the flooring 1 is pulled up, the male 2 from the groove 5 ′ formed near the base of the protrusion of the male 2. The back side portion 16 including the rupture. After the floor board 1 is removed, the broken portion 16 is pulled out from the female fruit 3 and removed. The adhesive at the time of flooring construction is usually applied to the base material 6 in the central region excluding the four peripheral portions. Since the adhesive 8 is not applied to the back surface of the fracture portion 16, the fracture portion 16 Is easy to remove. In FIG. 16, reference numeral 1 c is an upper end portion of the floor material left above the male fruit 2.

FIG. 15 shows a flooring according to still another embodiment of the present invention. In the flooring 1 according to Example 1 (especially, see FIG. 2), grooves 4 and 5 are formed at positions of 2.0 to 15.5 mm from the female back part 3a on the two sides adjacent to each other on the back side. On the other hand, in the floor material of this embodiment, in addition to the grooves 4 and 5, a groove 4 ′ extending along the male 2 extending in the longitudinal direction is formed, and the three-side grooves 4 and 5 are formed on the back surface of the floor material. , 4 'are different. The groove 4 ′ is formed at a position of 2 to 15.5 mm, preferably 8.5 to 15.5 mm, from the base of the protrusion of the male 2 toward the opposing female 3. Also in this embodiment, when the flooring 1 is removed, the lower protrusions 3b and 3b extending from the grooves 4 and 5 to the end portions are included on the side of the adjacent female berries 3 and 3 when the flooring 1 is removed. This is the case when the floor material is thick because the back side end portion 3d can be broken and the portion from the groove 4 'to the end can be broken at the same time on the male 2 side where the groove 4' is formed. However, there is an advantage that the removal work becomes easy. In this embodiment, the fracture on the male side 2 where the groove 4 'is formed is performed in the same manner as described above with reference to FIG. Although not shown, it goes without saying that both the groove 5 ′ in the fourth embodiment and the groove 4 ′ in the fifth embodiment may be formed to form a four-way groove along each side.

In this embodiment, a specific removal operation when the floor material 1 constructed as shown in FIG. 3 is damaged or damaged and needs to be removed for replacement with a new floor material. A description will be given with reference to FIGS.

For this removal operation, a locking jig 20 as shown in FIG. 17 is used. This locking jig 20 is formed into a shape having a space 21 in the center of the back surface side, for example, by cutting and bonding a 12 mm thick plywood and having a space 21 in the center of the back surface side. It is possible to procure on-site using surplus plywood at the site. The locking jig 20 is placed near the corners of the two sides 1d and 1e along the female berries 3 and 3 of the floor material 1 to be removed, and fixed to the floor material 1 with screws 22. (FIGS. 18 and 19). At this time, the screw 22 may be driven to a depth that penetrates the floor material 1 and slightly (about 0 to 2 mm) into the base material 6.

Then, a tool 23 such as a bar is inserted into the space 21 in the locking jig 20 attached to the surface of the flooring 1, and the flooring 1 is pulled up in the manner of an insulator (FIGS. 20 and 21). At this time, it is preferable to place the contact plate 24 at a location to be a fulcrum so as not to damage the floor material surface other than the floor material to be removed. Since the locking jig 20 is firmly attached to the flooring 1, the grooves 4 of the female berries 3, 3 on the back surface side are gradually raised along the side 1 d and the side 1 e by a lifting operation using the tool 23. The portion 3d on the front end side from 5 is broken. When the three-way groove or the four-way groove is formed as in the fourth and fifth embodiments, the floor material can be smoothly pulled up and the portion 3d can be ruptured over the entire length of the sides 1d and 1e.

In addition, the place which fixes the latching jig | tool 20 is near the corner | angular part of the edge | sides 1d and 1e in which the female seeds 3 and 3 are formed in the flooring 1, and a female seed | tip tip part by the raising operation | work in that part 3d is set so as to be most easily broken, but is generally positioned so as to leave about 15 mm from sides 1d and 1e.

The above-described removal operation is a preferred embodiment, but is not necessarily limited thereto. For example, a method of attaching one or a plurality of suction cups to the corners of the female body forming sides 1d, 1e of the floor material to be removed or in the vicinity thereof and pulling up the floor material using the reduced pressure suction force. Can also be adopted.

DESCRIPTION OF SYMBOLS 1 Floor material 1a Floor material surface 1b Floor material back surface 1c Upper end part 1d remaining after fracture on the male side Side 1e in the short direction where the female seed is formed Side 1e in the longitudinal direction where the female seed is formed Male fruit 3 Female fruit 3a Female fruit depth 3b Female fruit lower protrusion 3c Female fruit upper protrusion 3d Breaking part 3e Lower protrusion 4 Groove (groove extending in the longitudinal direction on the back side of the female fruit)
4a Groove inner surface 4b Groove side surface 4 'Groove (groove extending in the longitudinal direction on the male back side)
5 Groove (groove extending in the short direction on the female back side)
5 'groove (groove extending in the short direction on the male back side)
6 Base material 7 Nail 8 Adhesives 9a, 9b remaining on the surface of the base material after the floor material is removed Space material 10a, 10b for replacing the rear surface 11 Floor material 12 Cushion material 12 'Broken portion 13 Back groove 14a, 14b Replacement flooring materials 15a, 15b Female real back side space 16 Male real side fracture portion 20 Locking jig 21 Space 22 Mounting screw 23 Tool 24 Batter plate

Claims (2)

The male and female seeds are formed on two adjacent sides in a substantially rectangular shape in plan view, and can be removed after being applied to the base material while being connected through the fitting of the male and female seeds. In the floor material, grooves are formed on the two adjacent sides where the female fruit is formed from the back of the female fruit to the male fruit side at a position of 2.0 to 15.5 mm from the back side of the floor material to the front surface side. The flooring is characterized by breaking between the female seed and the groove when the flooring is removed . 2. The flooring according to claim 1, wherein each of the grooves is formed to a depth not less than a height of the lower protrusion of the female fruit and a height not reaching the lower surface of the upper protrusion.