JP6807731B2 - Fixed structure of shelf board and construction method of shelf board - Google Patents

Description

The present invention relates to a fixed structure of a shelf board and a method of constructing the shelf board.

When fixing the shelf board to the wall surface, if the wall surface has a U-shape or an L-shape in a plan view, the three or two sides of the rear side end and the side end of the shelf can be fixed to the wall surface. Therefore, it is easy to secure sufficient fixing strength, but in a fixed structure in which only one side of the rear end of the shelf board is fixed to the wall surface, the shelf board is particularly in the left-right direction (width direction). The longer the length, the more difficult it is to give sufficient fixing strength, and the front of the shelf may hang down due to its own weight or the load of the object placed on the shelf.

Jikkenhei 3-129341

In Patent Document 1, when the shelf board 11 is fixed to the wall surface (standing surface 22 of the standing portion 20), a prismatic groove extending in the longitudinal direction is formed in the back surface side corner portion of the back side edge 12 of the shelf board. By forming (fixing portion 13), fitting the cross rail 23 fixed to the wall surface into the groove, and providing the vertical plate 16 between the upper and lower shelf plates 11 and 11, the strength against the load of the shelf plate is increased. It is improving.

However, providing vertical boards not only makes the appearance worse, but it is also an essential premise that at least two shelf boards are provided at intervals above and below, and when only one shelf board is installed, it is vertical. Board reinforcement cannot be adopted. In this case, it is necessary to rely only on reinforcement by fitting and fixing the cross rail 23 for fixing the wall surface to the groove (fixing portion 13), but the strength against the load of the shelf board is insufficient, and the front of the shelf board is It is not possible to effectively prevent it from hanging down.

In order to solve this problem, the present invention according to claim 1 has a flush structure composed of a front core material, a rear core material, at least a pair of intermediate core materials, and a surface material, and is behind the rear core material. A rear concave groove is formed between the front and back inner surfaces of the surface material, and a lateral concave groove is formed between the inner surfaces of both ends of the front core material in the width direction and the front and back inner surfaces of the surface material on the outside of each intermediate core material. It is a fixed structure of a shelf board composed of a shelf board, a rear crosspiece fixed to a wall surface, a horizontal crosspiece, and a cover material, and is rearward in a concave groove on the rear side of the shelf board. The side crosspieces are fitted and the shelf board is adhesively fixed to the rear crosspiece, the lateral crosspiece is fitted into the lateral concave groove, and the lateral crosspiece is glued and fixed to the shelf board and the rear crosspiece. It is characterized in that a cover material is provided so as to cover both ends of the front core material and the outer surface of the lateral crosspiece.

According to the second aspect of the present invention, in the fixed structure of the shelf board according to the first aspect, an inclined surface is formed at at least one of the rear side crosspiece and the side crosspiece on the shelf side upper and lower corners. It is characterized by.

The present invention according to claim 3 is characterized in that, in the fixing structure of the shelf board according to claim 1 or 2, the rear crosspiece is joined to the rear core material of the shelf board.

The present invention according to claim 4 has a flash structure composed of a front core material, a rear core material, at least a pair of intermediate core materials, and a surface material, and behind the rear core material is a front and back inner surface of the surface material. A shelf board having a rear concave groove formed between the inner surfaces of both ends of the front core material in the width direction and a lateral concave groove formed between the front and back inner surfaces of the surface material is formed on the outside of each intermediate core material. It is a method of constructing a shelf board to be fixed to the wall surface, and the process of fixing the rear crosspiece to the wall surface, and the front and back inner surfaces of the surface material forming the lateral concave groove of the shelf board, the front core material, and both ends of the rear crosspiece. The process of applying an adhesive to the inner surface of the part, the process of inserting the horizontal crosspiece into the lateral concave groove of the shelf board and fixing it with the adhesive, and the front and back of the surface material forming the rear concave groove of the shelf board. The process of applying an adhesive to the inner surface and / or the rear surface of the rear core material and / or the front surface of the rear crosspiece, and the rear crosspiece fixed to the wall surface is inserted into the rear recessed groove of the shelf board to bond the adhesive. It is characterized by having a step of fixing with an agent.

The invention according to claim 5 has a flush structure composed of a front core material, a rear core material, at least a pair of intermediate core materials, and a surface material, and is between the front and back inner surfaces of the surface material behind the rear core material. A shelf board having a rear concave groove formed on the outer surface of each intermediate core material and a lateral concave groove formed between the inner surfaces of both ends of the front core material in the width direction and the front and back inner surfaces of the surface material is provided on the wall surface. It is a method of constructing a shelf board to be fixed, in which the process of fixing the rear crosspiece to the wall surface, the front and back inner surfaces of the surface material forming the lateral concave groove of the shelf board, the front core material, and both ends of the rear crosspiece. The process of applying an adhesive to the inner surface, the process of inserting the horizontal crosspiece into the lateral concave groove of the shelf board and fixing it with the adhesive, and the front and back inner surfaces of the surface material forming the rear concave groove of the shelf board. The step of applying an adhesive to the rear surface of the rear core material and / or the front surface of the rear crosspiece, and the adhesive by inserting the rear crosspiece fixed to the wall surface into the rear recessed groove of the shelf board. It is characterized by having a step of fixing with.

In the invention according to claim 6, in the method for constructing a shelf board according to claim 4 or 5, a cover material is further attached so as to cover both ends of the front core material and the rear crosspiece and the lateral crosspiece. It is characterized by having a process of performing.

According to the present invention according to claim 1, in addition to reducing the weight of the shelf board by having the flush structure, the rear crosspiece fixed to the wall surface fits into the rear concave groove of the shelf board. The shelf board is fixed to the wall surface via the rear crosspiece and integrated, and the lateral crosspiece is fitted and bonded to the lateral concave groove of the shelf board. As a result, the lateral crosspiece is fixed and integrated with the shelf board and the rear crosspiece, so that sufficient strength against the load of the objects placed on the shelf board is secured and the front of the shelf board does not hang down. A fixed structure can be obtained.

Further, since the three surfaces from the front surface of the shelf board to the back surface through the front surface are covered with the surface material and the side surfaces of the shelf board are covered with the cover material, a wood base material such as MDF forming the core material and the crosspiece is used. It is not exposed and looks good with makeup by surface material and cover material.

According to the second aspect of the present invention, the surface material forming the rear concave groove when the shelf board is slid and moved in the direction closer to the wall surface to insert the rear crosspiece into the rear concave groove. Since the adhesive applied to the front and back inner surfaces of the above can be scraped off little by little and allowed to enter between the upper and lower surfaces of the rear crosspiece and the front and back inner surfaces of the surface material, the fixing strength of the shelf board to the rear crosspiece is further increased. Increase.

According to the third aspect of the present invention, the rear crosspiece is joined not only to the front and back inner surfaces of the surface material forming the rear concave groove of the shelf board but also to the rear core material. The fixing strength of the shelf board to the side crosspiece is further increased.

According to the fourth to sixth aspects of the present invention, a suitable method for obtaining the fixed structure of the shelf board is provided.

It is a figure which shows the construction method of the shelf board by one Embodiment (Example 1) of this invention in the order of a process. It is a figure which shows the steps (e)-(g) performed following the steps (a)-(d) of FIG. It is a figure which shows the construction method of the shelf board by another Embodiment (Example 2) of this invention in the order of a process. It is a figure which shows the steps (e)-(g) performed following the steps (a)-(d) of FIG. It is sectional drawing AA in FIG. 2 (g) which shows the structure of the shelf board used in this invention. FIG. 2B is a cross-sectional view taken along the line 2 (g) BB showing the mounting state (fixed structure of the shelf board) of the shelf board obtained in Examples 1 and 2 on the wall surface. It is a figure which shows the process of adhering the crosspiece to a shelf board, and the bonding state when the crosspiece having an inclined surface is used in another embodiment (Example 3) of this invention. It is a cross-sectional view which shows the structure of the shelf board used in another embodiment (Example 4) of this invention. FIG. 8C is a cross-sectional view taken along the line FIG.

Hereinafter, the present invention will be described in detail with reference to examples.

A method of constructing a shelf board according to an embodiment of the present invention (Example 1) will be described in order of steps with reference to FIGS. 1 and 2.

First, the rear crosspiece 20 is fixed to the position where the shelf board 10 of the wall surface 1 is attached by screwing or the like (FIG. 1 (a)). The dimensions of the rear crosspiece 20 are formed so as to correspond to the dimensions of the rear concave groove 14c of the shelf board 10.

Next, the rear crosspiece 20 fixed to the wall surface 1 is inserted into the rear concave groove 14c of the shelf board 10 to be fitted, and fixed with an adhesive (FIG. 1 (b)). Before explaining this step in detail, the structure of the shelf board 10 used in the present invention will be described.

With reference to FIGS. 5 and 6, the shelf board 10 has a flash structure composed of a core material 11 and a surface material 12, and a paper core or the like is formed in a space surrounded by the core material 11 and the surface material 12. Filling material 13 is accommodated. The core material 11 is orthogonal to the front core material 11a extending over the entire width of the shelf board 10 and the front core material 11a at a position in the width direction in which lateral concave grooves 14a and 14b are left on both sides of the shelf board 10. It is composed of intermediate core materials 11b and 11c extending to the above and rear core materials 11c for connecting the rear ends of these intermediate core materials 11b and 11c, and is cored with staples (not shown) or the like. Each core is formed of one or more wood substrates such as LVL extending along their respective longitudinal directions. The size of the rear core material 11c is shorter than that of the front core material 11a.

The surface material 12 is made of a wood base material such as MDF on which the decorative sheet 12a is attached to the surface, has the same width as the shelf board 10 (front core material 11a), and has the same width as the front surface of the shelf board 10 (front core material 11a). The outer surface) is completely covered, and the front and back surfaces of the shelf board 10 are provided so as to extend further rearward beyond the rear core material 11c. Therefore, the above-mentioned is provided behind the rear core material 11c. A rear recessed groove 14c is formed. The rear concave groove 14c is formed over the entire width of the shelf plate 10, and is continuous with the lateral concave grooves 14a and 14b at both ends thereof.

The width dimension of the shelf board 10 (the width dimension of the front core material 11a and the surface material 12) may be formed to be large in advance, and may be cut and used according to the frontage dimension of the portion to be attached to the wall surface 1.

When this shelf board 10 is used, the adhesive fixing step shown in FIG. 1 (b) described above is performed on the front and back inner surfaces of the surface plate 12 forming the rear concave groove 14c and / or the rear surface of the rear crosspiece 11d. Adhesive can be fixed by applying an adhesive and inserting the rear crosspiece 20 fixed to the wall surface 1 into the rear recessed groove 14c of the shelf board 10 to fit them. In this way, the shelf board 10 is attached to the wall surface 1 via the rear crosspiece 20 (FIG. 1 (c)).

The dimension between the front and back inner surfaces of the surface plate 12 forming the rear concave groove 14c (the height dimension of the rear core material 11d) and the height dimension of the rear crosspiece 20 are substantially the same. The upper and lower end of the rear crosspiece 20 housed in the rear concave groove 14c are substantially in contact with the front and back inner surfaces of the surface plate 12 forming the rear concave groove 14c, but the rear crosspiece 20 The thickness dimension is formed to be substantially the same as or smaller than the depth dimension of the rear concave groove 14c. In the former case (this embodiment), the front surface of the rear crosspiece 20 is substantially in close contact with the rear surface of the rear core member 11d, and in the latter case, the front surface of the rear crosspiece 20 and the rear surface of the rear core member 11d. A gap is formed between them.

In this state, the lateral concave grooves 14a and 14b are exposed on both the left and right sides of the shelf board 10 surrounded by the front core material 11a, the rear core material 11d, and the intermediate core materials 11b and 11c. The lateral crosspieces 21a and 21b are inserted into the side concave grooves 14a and 14b, respectively, fitted, and fixed with an adhesive (FIG. 1 (d)). For this adhesive fixing, an adhesive is applied to the inner surfaces of both ends of the front core material 11a and the rear crosspiece 20 forming the lateral concave grooves 14a and 14b and the front and back inner surfaces of the surface plate 12, respectively. This can be done by inserting and fitting the lateral crosspieces 21a and 21b into the lateral concave grooves 14a and 14b of the shelf board 10 fixed to the wall surface 1 via the rear crosspiece 20. In this way, the state shown in FIG. 2 (e) is obtained.

The planar shape of the lateral crosspieces 21a and 21b is the planar shape of the lateral concave grooves 14a and 14b surrounded by the front core material 11a, the rear core material 11d, the intermediate core materials 11b and 11c and the rear crosspiece 20. Therefore, the four-circumferential wood openings of the lateral crosspieces 21a and 21b accommodated in the lateral concave grooves 14a and 14b are the front core members 11a and the rear side forming the lateral concave grooves 14a and 14b. Although each inner surface of the crosspiece 20 is substantially in contact with the front and back inner surfaces of the surface plate 12, the thickness dimension of the lateral crosspieces 21a and 21b is at least the width dimension of the lateral concave grooves 14a and 14b and the cover material 23a. , 23b (described later) is formed larger by the thickness t of the inner convex portion. In this embodiment, the thickness dimension of the lateral crosspieces 21a and 21b is formed to be larger than the width dimension of the lateral concave grooves 14a and 14b by t'(> t), and the outer surface thereof is the end of the shelf board 10 ( When the inner surface and the outer surface of the intermediate core materials 11b and 11c are fitted and adhesively fixed to the lateral concave grooves 14a and 14b at a position retracted by t from the front side core material 11a and the rear side crosspiece 20). The gaps 22a and 22b (FIG. 5) are formed between the two.

Finally, the inner convex portions of the cover materials 23a and 23b are inserted into the retracted portions of the lateral crosspieces 21a and 21b, and fixed to the front core material 11a and the rear crosspiece 20 with an adhesive (FIG. 2 (f). )) As a result, the shelf board fixing structure shown in FIG. 2 (g) and FIGS. 5 and 6 can be obtained. According to this shelf board fixing structure, in addition to the weight reduction of the shelf board 10 by having the flush structure, the rear side crosspiece 20 fixed to the wall surface 1 is the rear side concave groove 14c of the shelf board 10. The shelf board 10 is fixed to and integrated with the wall surface 1 via the rear crosspiece 20 by being fitted and adhered to the shelf board 10, and is laterally provided to the lateral concave grooves 14a and 14b of the shelf board 10, respectively. By fitting and adhering the crosspieces 21a and 21b, the lateral crosspieces 21a and 21b are fixed to the shelf board 10 and the rear crosspiece 20 and integrated, so that the mounting on the shelf board 10 is used. Sufficient strength against load is secured, and the front of the shelf board does not hang down. Further, since the three surfaces from the front surface of the shelf board 10 to the back surface through the front surface are covered with the surface material 12, and the side surfaces of the shelf board 10 are covered with the cover materials 23a and 23b, the core materials 11a to 11d and the crosspiece 20 , 21a, 21b are not exposed, and the surface material 12 and the cover materials 23a, 23b give a good appearance.

With reference to FIGS. 3 and 4, a method of constructing a shelf board according to another embodiment (Example 2) of the present invention will be described in order of steps. In this embodiment, when the shelf board 10 used in the first embodiment is fixed to the wall surface 1, a construction order different from that of the first embodiment is adopted, and the shelf board 10, the rear side crosspiece 20, and the side crosspiece are adopted. The 21a and 21b and the cover materials 23a and 23b are the same as those in the first embodiment, and the finally obtained shelf board fixing structure (FIGS. 5 and 6) is also the same. The same members / elements as in the first embodiment are designated by the same reference numerals in FIGS. 3 and 4.

In the method of constructing the shelf board according to the first embodiment, after the shelf board 10 is attached to the rear side crosspiece 20 (FIG. 1 (a)) fixed to the wall surface 1 (FIG. 1 (c)), the side crosspiece 21a, The construction order in which 21b is attached (FIGS. 1 (d) and 2 (e)) is adopted, but in this embodiment, the shelf board is attached to the rear crosspiece 20 (FIG. 3 (a)) fixed to the wall surface 1. Before attaching 10 (FIGS. 3 (d) and 4 (e)), the lateral crosspieces 21a and 21b are attached to the shelf board 10 and integrated with the shelf board 10 (FIGS. 3 (b) and 4 (e)). c)), this is attached to the rear side crosspiece 20 (FIG. 4 (d)), and the construction order is adopted. The step of attaching the cover materials 23a and 23b (FIG. 4 (e)) after obtaining the state of FIG. 4 (d) is performed in the same manner as the step (FIG. 2 (f)) of the first embodiment.

Even with such a construction order, a shelf board fixing structure (FIGS. 5 and 6) similar to that of the first embodiment can be obtained, and as described in the first embodiment, sufficient strength against a load is sufficiently secured and the appearance is good. The same applies to the appearance.

In this embodiment, inclined surfaces are formed at the upper and lower corners of the crosspieces 20, 21a, and 21b on the shelf board side. 7A and 7B show the steps 24a and 24b of FIGS. 1B to 1C in the first embodiment, wherein the inclined surfaces 24a and 24b are formed at the upper and lower corners of the rear crosspiece 20 on the shelf board side (front side). The steps of FIGS. 3 (c) to 4 (d) in FIG. 2 are shown.

That is, after applying the adhesives 25a and 25b to the front and back inner surfaces of the rear end portion of the surface material 12 forming the rear concave groove 14c (FIG. 7A), the rear crosspiece 14c is covered with the rear crosspiece. While inserting the 20, the shelf board 10 is slid and moved in a direction closer to the wall surface 1 (FIG. 7 (b)) to obtain a state in which the rear end end end of the surface material 12 is abutted against the wall surface 1 (FIG. 7 (c)). In FIG. 7B, the inclined surfaces 24a and 24b formed at the front upper and lower corners of the rear crosspiece 20 reached the adhesives 25a and 25b applied to the front and back inner surfaces of the rear end portion of the surface material 12. The time point is shown, and when the shelf board 10 is slid and moved in the direction closer to the wall surface 1 from this state, the adhesives 25a and 25b are gradually scraped off by the inclined surfaces 24a and 24b, and the rear crosspiece 20 Since it penetrates between the upper and lower surfaces and the front and back inner surfaces of the surface material 12, the shelf board 10 can be firmly fixed and integrated with the rear crosspiece 20 fixed to the wall surface 1.

Although not shown, the lateral crosspieces 21a and 21b are also formed with inclined surfaces at the upper and lower corners on the shelf board side (inside) so that the horizontal crosspieces 21a and 21b are formed into the lateral concave grooves of the shelf board 10. When fitted to 14a and 14b, it can be firmly fixed to the shelf board 10 and integrated.

The inclination angle of the inclined surfaces 24a and 24b is preferably 15 to 25 degrees with respect to the upper and lower surfaces of the crosspieces 20, 21a and 21b. If the inclination angles of the inclined surfaces 24a and 24b are not within this range, when the shelf board 10 is slid and moved in the direction closer to the wall surface 1, the adhesives 25a and 25b are scraped off little by little and the rear crosspiece 20 is used. The action of penetrating between the upper and lower surfaces and the front and back inner surfaces of the surface material 12 is not sufficiently exerted, and the fixing strength of the shelf board 10 with respect to the rear crosspiece 20 is impaired. The inclination angles of the inclined surfaces 24a and 24b in this embodiment are 21.8 degrees.

For convenience of illustration and explanation, the shelf board 10 in the above-described embodiment is shown as having a relatively small width dimension, and the crosspieces 20, 21a, and 21b are also shown as having a corresponding shape and dimension. However, in this embodiment, the shelf board 10 and the crosspieces 20, 21a, 21b having a specific structure and dimensions closer to those of the actual product are shown. Since the basic configuration is the same as the shelf board 10 described in the first embodiment, the same reference numerals are given to them.

FIG. 8 is a cross-sectional view of the shelf board 10 according to this embodiment, and FIG. 9 is a cross-sectional view taken along the line 8CC showing a state in which the shelf board 10 is fixed to the wall surface 1. Since the shelf board 10 has a large width dimension, in addition to the intermediate core materials 11b and 11c provided between both ends of the rear core material 11d and the front core material 11a, the space between them is divided into four equal parts. The intermediate core materials 11e, 11f, and 11g are provided in the partition chamber, and the filler 13 such as a paper core is housed in each compartment.

The surface material 12 is formed by sticking a decorative sheet 12b on the surface of a wood base material 12a such as MDF, and the wood base material 12a is formed by V-cuts 26a and 26b formed on the wood base material 12a at the upper and lower corners of the front surface. By bending it at a right angle, it wraps around from the front surface of the shelf board 10 to the back surface via the front surface so as to completely cover these three surfaces.

As shown in FIG. 9 as inclined surfaces 24a and 24b for the rear crosspiece 20, the upper and lower corners of the crosspieces 20, 21a and 21b on the shelf board side are the same as in the third embodiment (FIG. 7). An inclined surface is formed on the shelf, and the action described in the third embodiment is similarly exhibited. Further, the fixed structure (FIG. 9) using the shelf board 10 and its operation are as described in the first embodiment, and the construction method thereof is also the first embodiment (FIGS. 1 to 2) or the second embodiment (FIG. 2). Since it can be performed in the same manner as in 3 to 4), the explanation is omitted in each case.

10 Shelf board 11 Core material 11a Front core material 11b, 11c Intermediate core material 11d Rear core material 11e, 11f, 11g Intermediate core material 12 Surface material 12a Wood base material 12b Decorative sheet 13 Filling material 14a, 14b Lateral concave groove 14c Rear concave groove 20 Rear crosspiece 21a, 21b Side crosspiece 22a, 22b Gap 23a, 23b Cover material 24a, 24b Inclined surface 25a, 25b Adhesive 26a, 26b V-cut

Claims (6)

It has a flush structure consisting of a front core material, a rear core material, at least a pair of intermediate core materials, and a surface material, and a rear concave groove is formed between the front and back inner surfaces of the surface material behind the rear core material. On the outside of each intermediate core material, a shelf board in which lateral concave grooves are formed between the inner surfaces of both ends of the front core material in the width direction and the front and back inner surfaces of the surface material, and a rear crosspiece fixed to the wall surface. It is a fixed structure of a shelf board composed of a horizontal crosspiece and a cover material, and the rear crosspiece is fitted into the rear concave groove of the shelf board, and the shelf board becomes the rear crosspiece. Adhesively fixed, the lateral crosspiece is fitted into the lateral concave groove, and the lateral crosspiece is adhesively fixed to the shelf board and the rear crosspiece to cover both ends of the front core material and the outer surface of the lateral crosspiece. A fixed structure of a shelf board, which is characterized in that a cover material is provided. The fixed structure of a shelf board according to claim 1, wherein an inclined surface is formed at at least one of the shelf board side upper and lower corners of the rear side crosspiece and the side crosspiece. The fixed structure of a shelf board according to claim 1 or 2, wherein the rear crosspiece is joined to the rear core material of the shelf board. It has a flush structure consisting of a front core material, a rear core material, at least a pair of intermediate core materials, and a surface material, and a rear concave groove is formed between the front and back inner surfaces of the surface material behind the rear core material. , A method of constructing a shelf board that fixes a shelf board with lateral concave grooves formed between the inner surfaces of both ends of the front core material in the width direction and the front and back inner surfaces of the surface material on the outside of each intermediate core material. Therefore, the process of fixing the rear crosspiece to the wall surface and the front and back inner surfaces of the surface material forming the rear concave groove of the shelf board and / or the rear surface of the rear core material and / or the front surface of the rear crosspiece are adhered. The process of applying the agent, the process of inserting the rear crosspiece fixed to the wall surface into the rear concave groove of the shelf board and fixing it with the adhesive, and the shelf board fixed to the wall surface via the rear crosspiece. The process of applying an adhesive to the inner surface of the front and back of the surface material forming the lateral concave groove, the front core material, and the inner surfaces of both ends of the rear crosspiece, and inserting the lateral crosspiece into the lateral concave groove of the shelf board. A method of constructing a shelf board, which comprises a step of fixing with the adhesive. It has a flush structure consisting of a front core material, a rear core material, at least a pair of intermediate core materials, and a surface material, and a rear concave groove is formed between the front and back inner surfaces of the surface material behind the rear core material. , A method of constructing a shelf board that fixes a shelf board with lateral concave grooves formed between the inner surfaces of both ends of the front core material in the width direction and the front and back inner surfaces of the surface material on the outside of each intermediate core material. Therefore, the process of fixing the rear crosspiece to the wall surface and the adhesive is applied to the front and back inner surfaces of the surface material forming the lateral concave groove of the shelf board, the front core material, and the inner surfaces of both ends of the rear crosspiece. The process, the process of inserting the lateral crosspiece into the lateral concave groove of the shelf board and fixing it with the adhesive, and the front and back inner surfaces and / or the rear core material of the surface material forming the rear concave groove of the shelf board. There is a step of applying an adhesive to the rear surface and / or the front surface of the rear crosspiece, and a step of inserting the rear crosspiece fixed to the wall surface into the rear concave groove of the shelf board and fixing with the adhesive. A method of constructing a shelf board, which is characterized by being made of. The method for constructing a shelf board according to claim 4 or 5, further comprising a step of attaching a cover material so as to cover both ends of the front core material and the rear crosspiece and the lateral crosspiece. ..