JP3005706U - Floorboard for direct concrete attachment - Google Patents

Abstract

(57) [Summary] [Purpose] The joint strength of both sides and the front and rear of the floorboard for concrete direct bonding having a tongue-and-groove joint structure is enhanced by the adhesive to suppress the deviation of the upper mating surface. [Structure] A convex portion 2 is continuously provided on one side surface and one end surface of a long flat plate body 1 having a required width and length, and a convex portion 2 is formed on the other side surface and the other end surface.
The recessed portion 3 to be fitted in is provided, and on the back surface of the plate body 1, the stepped portion 6 having a required width is formed in the plate body 1 at the peripheral edge of the projection portion at a depth reaching the root portion 5 on the back surface side of the projection portion 2, The buffer member 7 attached to the surface of the plate member 2 is provided with a lateral groove 8 at a depth from the bottom surface of the buffer member 7 to the bottom surface of the convex portion 2 from the inner bottom surface of the recess portion 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wooden floorboard that is directly attached to a concrete substrate with an adhesive.

[0002]

[Prior art]

 If a wooden floorboard is directly attached to the concrete base, the floorboard will be distorted due to moisture emanating from the concrete and ambient humidity. In order to solve the problem, the applicant of the present invention has provided the prior art of No. 192103, 1985 (molded floor material for direct cementing). The technology is a long floor molding formed by sandwiching and laminating fiberboard from above and below with wood veneers. The fiberboard maintains moisture retention and is surrounded by a groove formed between the lateral groove on the back surface and the vertical joint. The shrinkage and expansion of a small area unit prevent the entire floor surface from being deformed, and the four areas of the small area are filled with an adhesive to enhance the adhesive strength with the floor surface. However, there is an unsolved problem regarding the enhancement of the bonding strength due to the intrusion of the adhesive into the joint due to the concave and convex fitting of the flooring to each other in the vertical and horizontal directions, and the technology for suppressing the deviation of the upper surface-side mating surface due to the enhancement.

[0003]

[Problems to be solved by the device]

 The present invention provides a floor board for direct concrete adhesion, in which when the floor board is attached, the adhesive penetrates into the joints of the concave and convex fittings to enhance the joint strength between the floor boards and to suppress the deviation of the upper mating surface due to breathing as much as possible. It is provided.

[0004]

[Means for Solving the Problems]

 The floorboard for direct concrete adhering of the present invention is such that one side surface and one end surface of a required long flat plate are continuously provided with a protruding portion in the central portion in the thickness direction, and the other side surface and the other end surface are provided with protruding portions. The recessed part that is to be fitted to the plate body is continuously formed, and on the back surface of the plate body, an appropriate cut step is formed at the edge part, and at the same time, a cushioning material is adhered and In a floorboard with a large number of lateral grooves provided at a required pitch in the same direction, the cut step portion is not provided on the peripheral edge side of the convex portion, and the depth at which the cut step portion reaches the bottom surface of the convex portion is required. It has a width, and the lateral groove is dug to a depth reaching from the inner bottom surface of the concave portion on one side to the bottom surface of the convex portion on the other side.

[0005]

[Action]

 According to the above construction of the floorboard, when the floorboard is stuck, the adhesive filled in the cut step portion adheres both side surfaces of the floorboard to each other and the front and rear end surfaces, and from the bottom surface of the concave portion and the convex portion via the lateral groove. , The adhesive is allowed to penetrate into the space between the groove bottom of the recess formed by fitting and the tip of the projection.

[0006]

【Example】

 An embodiment of the present invention will be described. As shown in FIGS. 1 and 2, on the peripheral side surface of a plate body 1 of a long flat plate made of a solid material having a thickness of 13 mm, a width of 75 mm and a length of 600 mm or 900 mm, A convex portion 2 is continuously provided on one side surface and one end surface in the longitudinal direction, and a concave portion 3 fitted to the convex portion 2 is continuously provided on the other side surface and the other end surface. On the back surface of the plate body 1, the protruding step portion 5 on the back surface side of the convex portion 2 cuts into the plate body by about 1.5 mm, that is, it penetrates deeper than the root portion 4 on the front surface side of the convex portion 2, and the cut step portion 6 is missing. The cushioning material 7 having a thickness of 2 mm is attached to the entire rear surface except the portion 6, and as shown in FIGS. 2 and 3, the cushioning material 7 and the convex portion 2 and the concave portion 3 are covered with a required pitch ( A lateral groove 8 having a width of 75 mm and a width of 1.5 mm is formed by digging a groove 9 which reaches the concave portion 3 from the upper surface of the cushioning material 7 and further reaches the bottom surface of the convex portion 2 on the rear surface side. The cut step portion 6 can also be cut out on the back surface side of the recess 2.

The floorboard a for concrete direct-adhesion (hereinafter, simply referred to as floorboard a) constructed in this manner has two sides in the longitudinal direction when the floorboard is attached, as shown in FIG. The portion 2 is fitted in the recess 3 of the other floor plate a, and the front and rear end surfaces are fitted and the protrusion 2 of one floor plate a is fitted in the recess 3 of the other floor plate a as shown in FIG. 7. Since the depth of the groove of the concave portion 3 is deeper than the protrusion degree of the convex portion 2, the space 10 is formed between the groove bottom of the concave portion 3 and the front end of the convex portion 2. The adhesive applied to the concrete floor surface not only bonds the cushioning material 7, but also fills the cut step portions 6 on both sides and the front and rear ends to bond the floor boards a to each other and to the lateral groove 8. As shown in FIG. 6, the filled adhesive penetrates into the space 10 through the communication port 11 from the concave portion 3 side to bond the joint portion between the concave portion 3 and the convex portion 2 and from the convex portion 2 side to the joint portion of FIG. As shown in FIG. 6, the groove 9 reaching the upper surface of the convex portion 2 penetrates into the space 10 to join the joint portion between the concave portion 3 and the convex portion 2. In addition, since the space 10 formed at the joints at the front and rear ends shown in FIG. 7 is also in communication with the space 10 formed at the joints at both sides, the adhesive will also penetrate into the spaces 10 at the front and rear ends. As a result, the joint strength is enhanced and deformation and deformation of the upper mating surface can be suppressed.

As described above, even if the amount of the adhesive applied to the concrete base is slightly increased, it penetrates into the space 10 through the lateral groove 8 to form an appropriate adhesive layer on the adhesive surface of the cushioning material 7 to prevent excess adhesive. Can be laid without sticking the agent and protruding from the outer edge.

[0009]

[Effect of device]

 According to the floorboard for direct concrete adhering of the present invention, since it is possible to three-dimensionally join to both sides of the floorboards at the time of pasting and the joints of the concave and convex portions of the front and rear parts, the joint strength is extended to the upper mating surface. , The deformation on the upper surface side of the plate is distributed over the entire plate instead of being concentrated on the joints of the concave and convex parts, so that the misalignment of the mating surface is suppressed as much as possible, and it has the effect of maintaining a beautiful floor surface throughout the year. .

[Brief description of drawings]

FIG. 1 is a partial perspective view of a floorboard a for directly attaching concrete according to the present invention.

FIG. 2 is a rear view of the same floor with a floor plate a for direct-attaching concrete cut off at an intermediate portion.

FIG. 3 is a side view of the floorboard a for direct concrete attachment, with an intermediate portion removed.

FIG. 4 is a partial cross-sectional view showing a joined state of both side portions of the floorboard a for concrete direct attachment.

5 is an enlarged partial cross-sectional view showing a joined state of a concave portion 3 and a convex portion 2 in FIG.

FIG. 6 is a partial rear view of FIG.

FIG. 7 is a partial cross-sectional view showing a joined state of front and rear portions of a floorboard a for direct concrete attachment.

[Explanation of symbols]

 1 plate 2 convex part 3 concave part 4 root part 5 root part 6 notch step part 7 cushioning material 8 lateral groove 9 groove 10 space 11 communication port a floor plate for direct pasting of concrete

Claims (1)

[Scope of utility model registration request] 1. A convex portion is provided on one side surface and one end surface of a long flat plate having a required width and length, and a concave portion is formed on the other side surface and the other end surface. In the floor plate formed by notching the cut step portion at the edge on the back surface of the plate body, adhering a cushioning material, and digging a lateral groove from the cushion material to the plate body, the cut step portion is a convex portion. A floorboard for direct pasting of concrete, which has a required width at the depth reaching the bottom surface of the, and a lateral groove is dug at a depth reaching the bottom surface of the convex portion from the inner bottom surface of the concave portion.