Plate-shaped body

Abstract

To provide a plate-like body configured to prevent an outsert-molded resin part from easily coming off from a wooden plate, the main part.SOLUTION: A lid body 1 including a wooden plate part 2 which is a plate-like member of a body part, and a lid body end part 3 formed by outsert-molding a resin mold on an outer periphery of a lateral surface of the wooden plate part 2, includes an end-part through-hole 4 which is the opening formed by perforating a plane near the lateral end surface of the wooden plate part 2. When the lid body end part 3 is outsert-molded on the outer periphery of the lateral surface, the resin constituting the lid body end part 3 enters the end-part through-hole 4.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a plate-like body, and more particularly to a plate-like body having a resin frame formed around its periphery. [Background technology]

[0002] A known example of a plate-like body having a resin frame formed around its periphery is one in which a wooden board or other plate-like body is set in a mold and a resin molding is outsert-molded around the outer periphery of the side surface of the wooden board. For example, Patent Document 1 discloses a method of forming a resin molding on the peripheral edge surface of plywood by outsert molding, in which protrusions such as uneven shapes are formed on the edge surface of the board to increase the adhesive surface between the resin and the plate material and improve adhesion. Patent Document 2 also discloses a lightweight and highly rigid plate-like body formed by forming a plate-like body main body with a core material made of hard foamed resin between a first outer surface material and a second outer surface material, and forming groove-shaped cutouts in the hard foamed resin to adhere end pieces made of hard resin to the side edges and the groove-shaped cutouts of the plate-like body main body to form an integral body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 48-35913 [Patent Document 2] Patent No. 6106626 Summary of the Invention [Problem to be solved by the invention]

[0004] However, according to the above-mentioned patent document, although the adhesive area between the board and the resin is increased, the fixing method is based on surface contact, so there is a risk that the wooden board will be compressed by heat and pressure during molding, and then expand upon cooling and restoration, causing damage or warping of the resin molding. Damage or warping of the resin molding will cause rattles between the wooden board and the resin molding, which may eventually lead to the resin molding becoming detached from the wooden board. The above-mentioned patent document does not provide any effective measures to address this risk.

[0005] Therefore, the present invention was made in consideration of such problems, and aims to provide a plate-shaped body having a structure in which the outsert-molded resin part does not easily come off from the wooden board, which is the main body part. [Means for solving the problem]

[0006] In order to solve the above problems, the plate-like body of the present invention is a plate-like body formed by outsert molding a resin molding on the outer periphery of the side surface of a plate-like member of the main body portion, and is characterized in that it has an opening formed by perforating a flat surface near the side end face of the plate-like member whose front and back surfaces are finished with decorative paper, and when the resin molding is outsert molded on the outer periphery of the side surface, the resin that constitutes the resin molding fills the opening.

[0007] Here, the opening is preferably a through-hole that penetrates from the front surface to the back surface of the plate-like member.

[0008] The opening may be formed in the shape of a keyhole by cutting out a side end surface of the plate-like member.

[0009] The openings may be recesses formed on the front and back surfaces of the plate-like member so as to face each other.

[0010] Furthermore, it is preferable that the resin moldings outsert molded on the outer periphery of the side surfaces of the corner portions of the plate-like member are wider than the resin moldings formed on the outer periphery of the side surfaces of other portions of the plate-like member.

[0011] Furthermore, it is preferable that the back surface of the resin molding that is outsert molded onto the outer periphery of the side surface of the corner portion of the plate-like member is provided with a convex piece that follows the shape of the resin molding of the corner portion, and that both ends of the convex piece are formed so as to be lower than the central portion of the convex piece. [Effects of the Invention]

[0012] According to the plate-shaped body of the present invention, the resin that constitutes the resin molding enters an opening formed near the side end face of the main body of the plate-shaped member whose front and back surfaces are finished with decorative paper, and this part acts as a retaining element, thereby obtaining a plate-shaped body with a structure in which the outsert-molded resin part does not easily come off from the wooden board that is the main body part. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a diagram showing a storage box provided with a lid according to an embodiment of the present invention; [Figure 2] FIG. [Figure 3] FIG. 2 is a cross-sectional view of the end portion of the lid body. [Figure 4] 10A and 10B are diagrams showing another example of the configuration of the end portion of the lid body. [Figure 5] 10A and 10B are cross-sectional views showing another configuration of the end portion of the lid body. [Figure 6] FIG. 1 is a perspective view of a corner of the lid; [Figure 7] FIG. 10 is a perspective view of the lid corner portion as seen from the back side. [Figure 8] FIG. 10 is a diagram showing a cross section of an end portion of the cover body when it is stacked. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, a plate-shaped body according to the present invention will be described based on an embodiment.

[0015] Here, the plate-like body will be described by taking as an example a lid body used for a box with an open top, such as a storage box.

[0016] FIG. 1 is a diagram showing a storage box equipped with a lid according to an embodiment of the present invention.

[0017] The storage box 20 is made up of a box body 21 having an open top surface and capable of storing items therein, and a lid body 1 placed on the top surface of the box body 21 to serve as a lid.

[0018] FIG. 2 is a perspective view showing the lid.

[0019] The lid 1 is made of a flat wooden plate and is a plate-like body having a wooden board portion 2 which forms the main body of the lid 1, and lid end portions 3 which are formed by outsert molding a resin molding on the outer periphery of the side surface of the wooden board portion 2 and form the ends of the lid 1. Of the lid end portions 3, the portions located at the four corners of the lid 1 are lid corner portions 7, which are configured with a rounded shape in the circumferential direction.

[0020] The lid end 3 has an end backside rib 5 on the back side of the lid 1 as a convex portion to prevent the lid 1 from shifting position when placed on the box 21, and the lid corner 7 has an arc-shaped corner backside rib 6 formed along the corner R as a similar convex portion.

[0021] The front and back surfaces of the wooden board portion 2 are covered with decorative paper. The decorative paper coating prevents warping of the wooden board portion 2 due to moisture penetration and the growth of mold. End through-holes 4 are provided at the ends of the wooden board portion 2 as openings formed by perforating the flat surface of the wooden board portion 2. The end through-holes 4 are through-holes that penetrate the wooden board portion 2 in the thickness direction, that is, from the front surface to the back surface of the wooden board portion 2. A plurality of end through-holes 4 are provided at regular intervals around the circumference of the wooden board portion 2. The end of the wooden board portion 2 where the end through-holes 4 are provided is the outer periphery of the side surface of the wooden board portion 2, so the cover end portion 3 is formed to cover the end through-holes 4 at the position where the end through-holes 4 are provided.

[0022] FIG. 3 is a diagram showing a cross section of the end portion of the lid body.

[0023] When the lid end 3 is outsert molded at the position where the end through-hole 4 is provided, the resin that makes up the lid end 3 will enter the end through-hole 4, which is the opening. At this time, the resin that has entered the end through-hole 4 functions as a stopper that prevents the lid end 3 from coming off the wooden board 2. This creates a structure that will not easily come off the wooden board. Furthermore, because the lid end 3 is outsert molded to cover the decorative paper 13 and the end through-hole 4 is provided, the adhesion at the contact area between the decorative paper 13 and the lid end 3 is improved, effectively preventing moisture from entering through gaps in the contact area.

[0024] From the viewpoint of ensuring the flow of resin, it is preferable to form the end through-holes 4 by drilling them at a position that is a certain distance (offset) from the side end face of the wooden board part 2. Also, drilling them too close to the side end face of the wooden board part 2 may cause cracks in the wooden board.

[0025] The resin forming the lid end portion 3 is preferably made of a soft material such as EVA (ethylene vinyl acetate) resin or elastomer resin, in order to prevent warping due to heat during molding.

[0026] FIG. 4 is a diagram showing another example of the configuration of the end portion of the lid body.

[0027] As the opening formed by drilling a flat surface near the end of the wooden board part 2, instead of providing a hole that penetrates the end of the wooden board part 2 as described above, an end keyhole 8 may be provided by cutting out a keyhole shape from the end of the wooden board part 2. When the end keyhole 8 is provided at the end of the wooden board part 2, the connection between the wooden board part 2 and the lid end part 3 becomes stronger, improving the effectiveness of preventing it from slipping out.

[0028] Unlike the front and back surfaces, which are finished with decorative paper, the side edges of the wooden board 2 are generally left as they are when the wood is cut, with no edges being finished (raw cut), making them porous. Therefore, some resin seeps in from the side edges during outsert molding of the lid end 3, so by forming grooves in the edges of the wooden board 2 rather than holes that penetrate the edges, it is possible to achieve a retaining effect on the lid end 3.

[0029] FIG. 5 is a cross-sectional view of another configuration of the end portion of the lid.

[0030] Here, an example is shown in which end recesses 9, which are recessed grooves formed on the front and back sides of the wooden board 2 at the end of the wooden board 2, are provided as openings formed by drilling a flat surface near the end of the wooden board 2. When end recesses 9 are provided at the end of the wooden board 2, damage to the wood end due to drilling a through hole can be prevented.

[0031] In this way, the lid 1 of this embodiment is structured so that holes are drilled in the plane of the wooden board 2 at a position a certain distance from the side end face of the wooden board 2, whose front and back surfaces are finished with decorative paper, and resin is allowed to flow into the openings formed by the drilling when a resin molding is outsert molded around the outer periphery of the side face of the wooden board 2. By allowing the resin to flow into the openings, the portions into which the resin has flowed function as retainers for the wooden board 2, preventing the lid end 3 from easily coming off the wooden board 2.

[0032] Fig. 6 is a perspective view of the corner portion of the lid, and Fig. 7 is a perspective view of the corner portion of the lid as seen from the back side.

[0033] As shown in Figures 6 and 7, an end through-hole 4 is provided in the lid corner 7a. Because the lid corner 7a is located at a corner, the flow of resin tends to be poor during outsert molding. By providing the end through-hole 4 in such a lid corner 7a and using the end through-hole 4 as the resin injection starting point, it is possible to reliably fill the resin.

[0034] The resin injection starting points may be provided by drilling holes in the flat surface near the end at the midpoint of each of the four sides of the lid. By adjusting the type of resin to be injected and the molding conditions, the resin can be reliably filled even when these four midpoints are used as resin injection starting points, preventing resin accumulation and molding defects at the corners 7a of the lid.

[0035] The lid corner 7a has a wide corner portion 12 that is wider than the other lid end portions 3. The provision of this wide corner portion 12 increases the rigidity of the lid. Furthermore, because the wide corner portion 12 is wider than the other lid end portions 3, it is possible to ensure sufficient space for arranging a corner backside rib that is provided on the backside of the lid.

[0036] In the lid corner portion 7a, the corner back rib provided on the back side of the lid is composed of a central convex piece 10 and both end convex pieces 11, and the height of both end portions of the both end convex pieces 11 is lower than that of the central convex piece 10.

[0037] The central protrusion 10 functions as a stacking member to prevent the lids from shifting when stacked. The end protrusions 11 function as protrusions to prevent the lids from shifting when placed on the box 21, i.e., as the above-mentioned corner back ribs.

[0038] FIG. 8 is a diagram showing a cross section of the end portion of the lid body when it is stacked.

[0039] When the lids are stacked, the central protrusion 10 of the upper lid contacts the surface (the surface with decorative paper) of the wooden board portion 2 of the lower lid and is positioned to engage with the lid end portion 3, preventing the stacked lids from shifting positions. As shown in Figures 3 and 8, the front and back surfaces of the wooden board portion 2, which is decorated with decorative paper 13 attached and is thus not flush with the outsert-molded lid end portion 3. Therefore, the central protrusion 10 and the lid end portion 3 prevent the stacked lids from shifting positions. In addition, the corner back rib, which is composed of the central protrusion 10 and the end protrusions 11, is provided on the back side of the lid corner portion 7a in the wide corner portion 12, allowing for ample space to be secured for the central protrusion 10 to engage with the lid end portion 3.

[0040] If the lid corners 7a were made wider or thicker in order to provide ribs for stacking the lids when they are stacked or ribs for preventing misalignment, the flow of resin during molding could be impaired. In this regard, as described above, the end through-holes 4, which serve as resin injection starting points, are provided in the lid corners 7a, which serve as resin injection starting points, and resin injection starting points are provided at the midpoints of each of the four sides of the lid, so it can be said that reliable filling of the resin is guaranteed.

[0041] Thus, with the lid body of this embodiment, holes are drilled in the flat surface near the side end face of the wooden board that is the main body, and when the resin molding is outsert molded around the outer periphery of the side face of the wooden board, resin is allowed to enter the opening formed by the drilling, so that the resin-filled portion that constitutes the resin molding acts as a retainer, preventing the resin molding from easily coming off the wooden board.

[0042] Furthermore, the resin moldings at the corners of the lid are formed wider than the resin moldings at other parts, thereby increasing the rigidity of the lid.

[0043] Furthermore, on the back side of the corner portion of the wide corner, a convex piece in the shape of an arc is provided along the corner portion so that both ends are lower than the center. This makes it possible to prevent the lid body from shifting out of position when placed on the box body using the convex portions on both ends, and to prevent the lid body 1 from shifting out of position when stacked on top of each other using the convex portion in the center.

[0044] The plate-shaped body according to the present invention has been described above based on an embodiment, but the present invention is not limited to this, and various design modifications are possible as long as the object of the present invention can be achieved and the gist of the invention is not deviated from, and all of these are included within the scope of the present invention.

[0045] For example, in the above embodiment, an example in which a plurality of end through-holes are provided has been described, but it can be said that forming an end through-hole in at least one location can provide the effect of allowing the device to be removed from the wooden board.

[0046] Furthermore, as long as the plane of the wooden board is perforated at a position a certain distance from the side end face of the wooden board and resin is allowed to enter the opening, the method of forming the opening does not have to be the through hole, keyhole, or opposing recess shown in the above embodiment, but may be a hole dug deep from one plane of the wooden board to the other plane.

[0047] Furthermore, in the above embodiment, an example was shown in which the main body of the lid was made of a flat wooden plate, but the main body of the plate-like body may also be made of plastic or the like.

[0048] Furthermore, in the above embodiment, an example was shown in which the corners of the lid body were configured to have a rounded shape, but the corners may also be configured to have an angular shape. [Industrial Applicability]

[0049] The plate-shaped body according to the present invention is suitable for use as a lid for a storage box or the like. [Explanation of symbols]

[0050] 1 Lid 2 Wood board section 3 Lid end 4 End through hole 5 End back rib 6 Corner back ribs 7,7a Lid corner 8 End keyhole 9 End recess 10 Central convex piece 11 Convex piece on both ends 12 Wide corner 13 Decorative paper 20 Storage Box 21 Box body

Claims

1. A plate-like body formed by outsert molding a resin molding on the outer periphery of the side surface of a plate-like member of the main body, The plate-shaped member has a front and back surfaces processed with decorative paper, and a flat surface near a side end surface of the plate-shaped member is perforated to provide an opening. The resin molding is formed to cover the opening, When a resin molding is outsert molded on the outer periphery of the side surface, the resin constituting the resin molding enters the opening, the resin moldings outsert-molded on the outer periphery of the side surfaces of the corner portions of the plate-like member are wider than the resin moldings formed on the outer periphery of the side surfaces of other portions of the plate-like member; a convex piece that conforms to the shape of the resin molding of the corner portion is provided on a back surface of the resin molding that is outsert molded on the outer periphery of the side surface of the corner portion of the plate-like member; Both ends of the convex piece are formed lower than the central portion of the convex piece, The convex piece is arranged so as to contact the surface of the lower plate member and to engage with the inside of the resin molding when the plate members are placed one on top of the other. A plate-like body characterized by:

2. The opening is a through-hole that penetrates from the front surface to the back surface of the plate-like member. The plate-like body according to claim 1 .

3. The opening is formed in the shape of a keyhole by cutting out the side end surface of the plate-like member. The plate-like body according to claim 1 .

4. The openings are recesses formed on the front and back surfaces of the plate-like member so as to face each other. The plate-like body according to claim 1 .

5. The opening is drilled on the outer periphery of the side surface of the corner portion of the plate-like member, and serves as a starting point for injection of resin constituting the resin molding when the resin molding is outsert molded on the outer periphery of the side surface. The plate-like body according to any one of claims 1 to 4.

6. The opening is drilled on the outer periphery of the side surface at the midpoint of the four sides of the plate-like member, and serves as a starting point for injection of the resin that constitutes the resin molding when the resin molding is outsert molded on the outer periphery of the side surface. The plate-like body according to any one of claims 1 to 5.

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