JP6708362B2 - Resin panel - Google Patents

Description

The present invention relates to a resin panel.

Conventionally, resin panels have been used for various purposes such as automobiles, building materials, sports and leisure. The resin panel has a sandwich structure in which both surfaces of the core material are covered with a skin material, and is also called a sandwich panel.

On the other hand, a member such as a hinge (member to be fastened) may be attached to the skin material of the resin panel using fastening means such as rivets. For example, Patent Document 1 describes a per-shell board to which a hinge portion is attached as a member to be fastened. The hinge portion of this par-shell board is a bendable portion formed by sewing two upper and lower nonwoven fabrics.

JP-A-2000-62537

By the way, when a member such as a hinge (member to be fastened) is attached to a resin panel using fastening means such as rivets, conventionally, a hole is made in the resin sheet on the front side or the back side to fasten the fastened member. I was going. In that case, the plate thickness of the resin sheet must be increased in order to support the load applied to the member to be fastened, which is a factor that hinders weight reduction.

Therefore, it is an object of the present disclosure to reduce the weight of a resin panel as compared with the related art and to firmly attach a member to be fastened.

One aspect of the present disclosure is to connect a core material, a first plate provided on a front surface of the core material, a second plate provided on a back surface of the core material, and a first plate and a second plate. A reinforcing member having a connecting plate, a skin member made of a resin sheet for covering the core member and the reinforcing member, the skin member, and a fastening member penetrating the first plate or the second plate of the reinforcing member. A member to be fastened attached on the skin material , the skin material is welded to the core material and the reinforcing material, and the front surface side skin material and the back surface side skin material. It is a resin panel in which a parting line is welded to each other at the periphery.

In the resin panel, the plate thickness of the first plate and the second plate of the reinforcing member through which the fastening member penetrates may be smaller than the plate thickness of the connecting plate.

In the resin panel, the core member is formed with a recess for mounting at least one of the first plate and the second plate of the reinforcing member, whereby the main member of the core member is formed. The back surface of the core member and the back side plate surface of the second plate of the reinforcing material are flush with each other. Good.

In the resin panel, the first plate and the second plate of the reinforcing member are arranged inside a reference line defined by an outer edge of the core member when the core member is seen in a plan view. Good.

In the resin panel, the core member may be provided with a notch from the outer edge toward the inside, and the connecting plate of the reinforcing material may be inserted into the notch.

According to the resin panel according to the present disclosure, it is possible to reduce the weight as compared with the related art and to firmly attach the member to be fastened.

It is a perspective view of the resin-made container of 1st Embodiment. It is a top view of the resin board of a 1st embodiment. It is an expanded sectional view of AA of FIG. It is a figure explaining the example of attachment to the core material of a reinforcing material in the resin board of a 1st embodiment. It is a top view which shows a part of resin board of embodiment to which the reinforcing material was attached. It is a figure explaining a preferred example of arrangement of a reinforcing material to a resin board. It is a figure which shows the manufacturing method of the resin board of 1st Embodiment. It is a figure which shows the manufacturing method of the resin board of 1st Embodiment. It is a figure which shows the manufacturing method of the resin board of 1st Embodiment. It is a figure which shows the manufacturing method of the resin board of 1st Embodiment. It is a figure which shows the manufacturing method of the resin board of 1st Embodiment. It is a figure explaining the example of attachment to a core material of a reinforcing material in the resin board of a 2nd embodiment. It is a figure explaining the example of attachment of the reinforcing material to the core material in the resin board concerning the modification of a 2nd embodiment. It is a figure which shows the resin board which concerns on the modification of each embodiment.

(1) First Embodiment Hereinafter, a resin board which is a first embodiment of the resin panel of the present invention will be described.
FIG. 1 shows a perspective view of a resin container 100 including the resin board 1 of the first embodiment. As shown in FIG. 1, the resin container 100 includes a container body 10 and a resin board 1 that functions as a lid of the container body 10. The resin board 1 has hinge members 5L and 5R. The resin board 1 and the container body 10 are connected by hinge members 5L and 5R so that the storage space 10a of the container body 10 can be opened and closed by the resin board 1. That is, the resin board 1 is configured to be rotatable with respect to the container body 10 with the hinge members 5L and 5R as fulcrums. The hinge members 5L and 5R are connected to the hinge mounting surface 12 of the container body 10 by rivets. The hinge members 5L and 5R of the present embodiment are examples of fastened members.

(1-1) Configuration of Resin Board Next, the configuration of the resin board 1 of the present embodiment will be described with reference to FIGS.
FIG. 2 is a plan view of the resin board 1 according to the first embodiment. FIG. 3 is an enlarged cross-sectional view of AA of FIG. FIG. 4 is a diagram illustrating an example of attaching the reinforcing material 3 to the core material 23 in the resin board 1 according to the first embodiment. FIG. 5 is a plan view showing a part of the resin board 1 of the embodiment to which the reinforcing member 3 is attached.

As shown in FIGS. 1 and 2, the resin board 1 has a substantially rectangular parallelepiped shape, and the resin laminate 2 and the hinge members 5L and 5R (hereinafter, individually or collectively, referred to as “hinge member 5”). Also referred to as "." As will be described later, the resin laminate 2 is internally provided with the reinforcing material 3. The hinge members 5L and 5R are fastened together with the reinforcing material 3 near the outer edge of the resin laminated body 2 by rivets R (four points for each hinge member in the example shown in FIG. 2).

Referring to FIG. 3, in the resin laminated body 2, the core material 23 is sandwiched by the first resin sheet 21 and the second resin sheet 22 which are the resin sheets of the thermoplastic resin constituting the front surface and the back surface, respectively. It has a sandwich structure. The first resin sheet 21 and the second resin sheet 22 cover the core material 23 and the reinforcing material 3 and constitute a skin material of the resin board 1.

The resin material of the first resin sheet 21 and the second resin sheet 22 is not limited, and may be foamed resin or non-foamed resin, but in order to secure the rigidity of the resin board 1, the non-foamed resin is used. Is preferably formed from For example, in consideration of moldability, the skin material sheets SA and SB may be formed by mixing polystyrene (PS) and styrene-ethylene-butylene-styrene block copolymer resin (SEBS) in polypropylene (PP) which is a main material.

Since the core material 23 occupies a large proportion of the volume of the resin board 1, it is preferable that the core material 23 be made of a foamed resin foamed with a foaming agent for weight reduction. Examples of the resin material of the core material 23 include, for example, any one of polyolefin such as polypropylene and polyethylene, acrylic derivative such as polyamide, polystyrene and polyvinyl chloride, or a material obtained by adding a foaming agent to a mixture of two or more kinds. Be done. The core material 23 is molded by, for example, a bead method in-mold foam molding method.
As the foaming agent, any of a physical foaming agent, a chemical foaming agent and a mixture thereof may be used. As the physical foaming agent, an inorganic physical foaming agent such as air, carbon dioxide gas, nitrogen gas, or water, and an organic physical foaming agent such as butane, pentane, hexane, dichloromethane, dichloroethane, or a supercritical fluid thereof is used. be able to.
The expansion ratio of the core material 23 is in the range of 1.5 to 15 times, typically 4 times, preferably 2.5 to 10 times. The expansion ratio is a value obtained by dividing the density of the mixed resin before foaming by the apparent density of the foamed resin after foaming.

The first resin sheet 21, the second resin sheet 22, and the core material 23 may be molded using a resin material mixed with a glass filler for the purpose of increasing rigidity and strength.
Examples of the glass filler include glass fiber, glass fiber cloth such as glass cloth and glass nonwoven fabric, glass beads, glass flakes, glass powder, and milled glass. Examples of types of glass include E glass, C glass, A glass, S glass, D glass, NE glass, T glass, quartz, low dielectric constant glass, and high dielectric constant glass.
In addition to the glass filler, talc, calcium carbonate, wollastonite, an inorganic filler such as a magnesium-based material, carbon fiber or the like may be mixed to increase rigidity.

As shown in FIG. 3, in the resin board 1 of this embodiment, the reinforcing material 3 is attached to the core material 23. The reinforcing member 3 includes a first plate 31 provided on the front surface of the core member 23, a second plate 32 provided on the back surface of the core member 23, and a connecting plate for connecting the first plate 31 and the second plate 32. 33 and have a U-shaped cross section (or U-shaped). The first plate 31 of the reinforcing member 3 has a front side plate surface 311 that contacts the first resin sheet 21, and a back side plate surface 312 that contacts the core member 23. The second plate 32 of the reinforcing member 3 has a front side plate surface 321 that contacts the core member 23, and a back side plate surface 322 that contacts the second resin sheet 22. The connecting plate 33 has an inner plate surface 331 that contacts the side wall surface of the core member 23, and an outer plate surface 332 that forms an end surface of the reinforcing member 3.

The material of the reinforcing material 3 is not particularly limited, but in order to secure the strength of the resin board 1, it is preferably made of a metal such as aluminum or a hard plastic. The reinforcing material 3 is formed by, for example, extrusion molding.

As shown in FIG. 3, the hinge members 5L and 5R are provided with mounting openings RH (openings through which the rivets R penetrate). A rivet R (an example of a fastening member) is fastened to the resin laminate 2 through the opening RH. That is, in the resin board 1 of the present embodiment, the hinge members 5L and 5R are made of resin boards by the rivets R penetrating the first resin sheet 21 which is a skin material and the first plate 31 of the reinforcing material 3. It is attached to the front side of 1. When fastening the rivet R, a hole is drilled in the fastening position on the first resin sheet 21 so that the first resin sheet 21 and the reinforcing material 3 penetrate, and the rivet R is inserted into the hole.

In the reinforcing member 3, the plate thickness t1 of the first plate 31 through which the rivet R penetrates is preferably smaller than the plate thickness t2 of the connecting plate 33. This is for the following reason. Firstly, by reducing the plate thickness t1 of the first plate 31, it is possible to easily perform the work of opening the holes for fastening the rivet R and also to reduce the weight. Secondly, since the connecting plate 33 is a portion to which a large load is applied when the hinge member 5 operates, it is preferable to increase the plate thickness t2 of the connecting plate 33 in order to increase the strength of the connecting plate 33. This is because.

In the resin board 1 of the present embodiment, the required rigidity and strength are ensured even when the plate thickness t1 of the first plate 31 and the plate thickness of the second plate 32 are made relatively small. You can This is for the following reason. First, as described later, when the resin board 1 is manufactured, the core material 23 and the reinforcing material 3 are welded to the molten resin to be the first resin sheet 21 and the second resin sheet 22. This is because the first resin sheet 21, the core material 23, and the reinforcing material 3 have an integral structure in the reinforcing material 3 and its surroundings. Secondly, as shown in FIG. 3, since the reinforcing member 3 has a form in which the core member 23 is sandwiched, it is necessary to obtain required rigidity and strength in any direction of opening and closing the hinge member 5. This is because the structure is advantageous.
Further, since the required rigidity and strength can be secured by the reinforcing material 3, the first resin sheet 21 and the second resin sheet 22 can be thinned.

As shown in FIG. 4, in the resin board 1 of the present embodiment, a recess 231a and a recess 232a are formed on the outer edge of the front surface 231 and the outer edge of the back surface 232 of the core member 23, respectively. As shown in order of steps S10 and S11 in FIG. 4, the reinforcing member 3 is attached to the core member 23 by inserting the reinforcing member 3 having a U-shaped cross section into the recess 231a and the recess 232a from the outside. When the reinforcing material 3 is attached to the core material 23, the first plate 31 of the reinforcing material 3 is placed in the recess 231a of the core material 23, and the second plate 32 of the reinforcing material 3 is placed in the recess 232a of the core material 23. Placed. Further, the inner plate surface 331 of the connecting plate 33 of the reinforcing member 3 contacts the side wall surface 235b of the core member 23. In the diagram shown in step S11, the positions of the openings RH (two places) for fastening the rivet R are shown by dotted lines.

Preferably, when the reinforcing member 3 is attached to the core member 23, the front surface 231 of the core member 23 and the front side plate surface 311 of the first plate 31 of the reinforcing member 3 are flush with each other, and The recess amounts of the recesses 231a and 232a are set such that the back surface 232 of the member 23 and the back plate surface 322 of the second plate 32 of the reinforcing member 3 are flush with each other. As a result, the front surface and the back surface of the resin board 1 are flush with each other, so that the appearance of the resin board 1 is not impaired.

As shown in FIG. 4, the depth of the recess 231a with respect to the side wall surface 235a of the core member 23 is L1, the width of the recess 231a in the mounting direction of the reinforcing member 3 is L2, and the first plate 31 of the reinforcing member 3 is The width in the mounting direction is L3. Here, when the reinforcing member 3 is engaged with the recess 231a without a gap, L3=L2+t2 (t2 is the plate thickness of the connecting plate 33 of the reinforcing member 3 as shown in FIG. 3). In this case, it is preferable to set L1>L3. In other words, it is preferable to set the core material 23 so that L1>L2+t2. That is, as shown in FIG. 5, when the reinforcing member 3 is attached to the core member 23, the outer plate surface 332 of the reinforcing member 3 when viewed in a plan view is the side wall surface 235a of the core member 23 (that is, It is preferably located inside the reference line EL defined by the outer edge of the core material 23.
The reference line EL means an imaginary line defined by the outermost peripheral edge of the core material 23. For example, as shown in FIG. 4, in the core material 23 of the present embodiment, the side wall surface 235b of the portion where the recesses 231a and 232a are formed is more than the side wall surface 235a of the portion where the recesses 231a and 232a are not formed. Although located inside, the reference line EL is determined by an imaginary line when the side wall surface 235a that is the outermost peripheral edge of the core member 23 is seen in a plan view.

The reason why L1>L3 is preferable will be further described with reference to FIG.
FIG. 6 shows three patterns regarding the relationship between the depth L1 of the recess 231a based on the side wall surface 235a and the width L3 of the reinforcing member 3 in the mounting direction of the first plate 31. FIG. 6A is an example of this embodiment, and is the case of L1>L3 as shown in FIG. 6B and 6C are reference examples showing the case of L1=L3 and the case of L1<L3, respectively, which is different from the example of the present embodiment.

As will be described later, the core member 23 to which the reinforcing member 3 is attached is welded to the molten resin sheet when the split mold is clamped. At this time, as shown in FIG. 6A, the first plate 31 and the second plate 32 of the reinforcing member 3 are defined by the outer edge of the core member 23 when the core member 23 is viewed in a plan view. When the core member 23 is arranged inside the line EL (that is, when L1>L3), the longitudinal direction of the core material 23 is aligned with the vertical direction for welding with the molten resin sheet (that is, , When the DOWN of FIG. 6 is arranged vertically downward), since the side wall of the recess 231a of the core member 23 supports the connecting plate 33 of the reinforcement member 3, the reinforcement member 3 is unlikely to fall off from the core member 23. Become. Therefore, it is possible to reduce the possibility that the reinforcing material 3 will fall off the core material 23 and damage the mold.
Further, as shown in FIG. 6A, in the case of L1>L3, the outer plate surface 332 of the reinforcing member 3 is separated from the side wall surface 235a of the core member 23 to the inner side. Even when the inner plate surface 331 of the reinforcing member 3 slightly approaches the pinch-off portion of the split mold due to the core material 23 being slightly displaced with respect to the molten resin sheet P during the manufacturing of 1, the mold of the split mold is produced. It is unlikely that the split mold will sandwich the reinforcing material 3 during tightening.

As shown in FIG. 6B, in the case of L1=L3, the side wall of the recess 231a of the core member 23 supports the connecting plate 33 of the reinforcing member 3 as in the case of FIG. 6A. However, since the outer plate surface 332 of the reinforcing member 3 is not inside the reference line EL, the holding force of the reinforcing member 3 by the core member 23 is not sufficient as in the case of FIG. 6A.
As shown in FIG. 6C, when L1<L3, since the outer plate surface 332 of the connecting plate 33 of the reinforcing member 3 is outside the reference line EL, the connecting plate 33 is a recess of the core member 23. It is not supported by the side wall of 231a, and the holding force of the reinforcing material 3 by the core material 23 is small. Therefore, there is a possibility that the core material 23 may fall off the reinforcing material 3 and damage the mold.
Further, as shown in FIGS. 6B and 6C, when L1≦L3 (particularly when L1<L3), the core material 23 is There is a concern that the inner plate surface 331 of the reinforcing member 3 approaches the pinch-off portion of the split mold due to the displacement with respect to the molten resin sheet P, and the split mold may sandwich the reinforcing member 3 when the split mold is clamped. is there.
From the above, it is understood that it is preferable that L1>L3.

(1-2) Method for Manufacturing Resin Board Next, a method for manufacturing the resin board 1 according to the present embodiment will be described with reference to FIGS. 7 to 11 are views for sequentially explaining the method of manufacturing the resin board according to the first embodiment.

First, as shown in FIG. 7, molten resin sheets P, P are extruded vertically downward from an extruding device (not shown) and supplied between the forming surfaces 51a, 52a of the pair of split molds 51, 52. .. At this point, the pair of split molds 51 and 52 are in the open position.
Each of the split molds 51 and 52 is equipped with a vacuum device (not shown) for sucking air in the closed space. The vacuum device includes a vacuum chamber and a communication passage that connects the vacuum chamber and the forming surface.

Next, as shown in FIG. 8, the sliding portions 511, 521 around the forming surfaces 51a, 52a are projected and the end faces thereof are brought into contact with the molten resin sheets P, P. As a result, a sealed space is formed between the molten resin sheets P, P and the forming surfaces 51a, 52a of the pair of split molds 51, 52. Then, the air in the closed space is sucked by the communication passage provided between the vacuum chamber and the forming surfaces 51a and 52a. By this suction, the two molten resin sheets P, P are pressed against the forming surfaces 51a, 52a of the pair of split molds 51, 52, respectively, and along the forming surfaces 51a, 52a as shown in FIG. It is shaped (formed) so as to fit the shape, that is, the substantially outer shape of the resin board 1.

Next, as shown in FIG. 10, the manipulator 90 holds the core member 23 to which the reinforcing member 3 is attached, and the manipulator 90 is used to position the core member 23 between the pair of split molds 51 and 52. Then, the core material 23 is welded by being pressed against the molten resin sheet P shaped on either of the forming surfaces 51a and 52a. At this time, as shown in FIG. 5, since the outer plate surface 332 of the reinforcing member 3 is formed inside the reference line EL defined by the outer edge of the core member 23, the reinforcing member 3 extends from the core member 23. Is unlikely to drop out.

After welding the core material 23 to any of the molten resin sheets P, the split molds 51 and 52 are clamped as shown in FIG. By this mold clamping, both surfaces of the core material 23 (the front surface 231 and the back surface 232) and the first plate 31 and the second plate 32 of the reinforcing material 3 are welded to the molten resin sheets P, P. As a result, around the reinforcing material 3, the core material 23, the reinforcing material 3, and the first resin sheet 21 and the second resin sheet 22 which are the skin material are integrally joined. Further, at the pinch-off portions (not shown) of the pair of split molds 51, 52, the peripheral edges of the pair of molten resin sheets P, P are welded to form a parting line.

Finally, the pair of split molds 51, 52 are moved to the open position again, the molded resin board 1 is separated from the forming surfaces 51a, 52a, and burrs formed around the parting line are cut with a cutter or the like. And remove. With the above, the resin board 1 is completed.

As described above, according to the resin board 1 of the present embodiment, the reinforcing material 3 placed on the front surface and the back surface of the core material 23 is used as the first resin sheet 21 and the second resin sheet 22. The hinge members 5L and 5R are mounted on the skin material by rivets R that penetrate the skin material and the first plate 31 of the reinforcing member 3. Therefore, as compared with the conventional case where a hole is made only in the skin material and the hinge member is attached with rivets, in the resin board 1 of the present embodiment, the reinforcement member 3 can support the load of the hinge member. Therefore, the skin material can be thinned. For example, the thickness of the resin sheet of the resin board 1 of the present embodiment can be set to 1 mm, while the conventional resin sheet has a thickness of 2 mm.
As described above, according to the resin board 1 of the present embodiment, it is possible to reduce the weight as compared with the related art and to firmly attach a member to be fastened such as a hinge.
Further, since the reinforcing material 3 needs to be provided only at the attachment position of the hinge member, the size of the entire resin board 1 can be relatively small.

(2) Second Embodiment Hereinafter, a resin board which is a second embodiment of the resin panel of the present invention will be described with reference to FIGS. 12 and 13.
FIG. 12 is a diagram illustrating an example of mounting the reinforcing material on the core material in the resin board according to the second embodiment. FIG. 13 is a diagram illustrating an example of mounting the reinforcing material to the core material in the resin board according to the modified example of the second embodiment. 12 and 13 are diagrams corresponding to FIG. 4, respectively.
In this embodiment, the manner of attaching the core material and the reinforcing material is different from that of the first embodiment. Note that duplicate description of the same contents as in the first embodiment will be omitted.

First, referring to FIG. 12, the reinforcing member 3A of the present embodiment includes a first plate 31A provided on the front surface 231A of the core member 23A, a second plate 32A provided on the back surface 232A of the core member 23A, and a second plate 32A. It has a first plate 31A and a connecting plate 33A for connecting the second plate 32A, and has a substantially H-shaped cross section. The connecting plate 33A connects the central portions of the first plate 31A and the second plate 32A.

A recess 231Aa and a recess 232Aa are formed on the outer edge of the front surface 231A and the outer edge of the back surface 232A of the core material 23A, respectively. A notch 237A into which the connecting plate 33A of the reinforcing member 3A is inserted is formed between the recess 231Aa and the recess 232Aa. The cut 237A is provided by cutting with a cutter or the like after the core material 23 is formed. As shown in order of steps S20 and S21 of FIG. 12, the reinforcing material 3A is attached to the core material 23A by inserting the connecting plate 33A of the reinforcing material 3A having an H-shaped cross section into the notch 237A. In a state where the reinforcing material 3A is attached to the core material 23A, the first plate 31A of the reinforcing material 3A is placed in the recess 231Aa of the core material 23A, and the second plate 32A of the reinforcing material 3A is placed in the recess 232Aa of the core material 23A. Placed.

In the reinforcing member 3A shown in FIG. 12, openings RH (shown by dotted lines) of the hinge members 5L and 5R for fastening the rivet R are formed at four positions on the first plate 31A provided on the front side of the core member 23A. To be done. Since it is not necessary to form a hole for fastening the rivet R in the second plate 32A provided on the back side of the core material 23A, the width is made smaller than that of the first plate 31A for weight reduction.

Preferably, when the reinforcing material 3A is attached to the core material 23A, the front surface 231A of the core material 23A and the front side plate surface 311A of the first plate 31A of the reinforcing material 3A are flush with each other, The recess amounts of the recesses 231Aa and 232Aa are set such that the back surface 232A of the material 23A and the back plate surface 322A of the second plate 32A of the reinforcing material 3A are flush with each other. Thereby, the front surface and the back surface of the resin board are flush with each other, so that the appearance of the resin board is not impaired.

As shown in FIG. 12, when the depth of the recess 231Aa based on the side wall surface 235A of the core member 23A is L1 and the width of the reinforcing member 3A in the mounting direction of the first plate 31A is L3, preferably L1>L3. Is set. That is, as shown in FIG. 12, in the state where the reinforcing material 3A is attached to the core material 23A, the end surface 3Ae of the reinforcing material 3A when viewed in a plan view is the side wall surface 235A of the core material 23A (that is, the core material 23A). It is preferable to be located inside the (outer edge of 23). By doing so, since the reinforcing material 3A enters inside the side wall surface 235A of the core material 23A, it is possible to reduce the possibility that the reinforcing material 3A will fall off the core material 23A and damage the mold during manufacturing.
Further, since the end surface 3Ae of the reinforcing material 3A is separated from the end surface 235A of the core material 23A inward, even if the reinforcing material 3A is slightly displaced to the outside after being attached to the core material 23A, the present embodiment It is possible to reduce the possibility that the split mold may sandwich the reinforcing material 3A when the split mold is clamped at the time of manufacturing the resin board of the embodiment.

In the first embodiment, the inner plate surface 331 of the connecting plate 33 of the reinforcing member 3 is in contact with the side wall surface 235b of the core member 23. Therefore, when the reinforcing member 3 is arranged inside the side wall surface 235a. It is necessary to dispose the side wall surface 235b (the side wall surface of the concave portions 231a and 232a) inside the core material 23 with respect to the side wall surface 235a. Therefore, the core material 23 is provided in a part of the inside of the skin material (a portion outside the reinforcing material 3 when the resin board 1 is viewed in plan; a portion between the outer plate surface 332 and the reference line EL in FIG. 5). A space is formed where there is no. On the other hand, in this embodiment, since the connecting plate 33A of the reinforcing member 3A is configured to be inserted into the notch 237A, the side wall surface 235A of the core member 23A is flush with the recesses 231Aa and 232Aa. Can be Therefore, even when the reinforcing material 3A is arranged inside with a large distance from the side wall surface 235a, a local decrease in strength and rigidity of the resin panel due to the formation of the space in which the core material does not exist. Can be prevented.

In the example shown in FIG. 12, in the state where the reinforcing member 3A is attached to the core member 23A, two rivet openings RH are located on both sides of the connecting plate 33A, but the reinforcing member 3A The configuration and the position of the cut 237A can be appropriately changed according to the fastening position of the rivet. For example, the example shown in FIG. 13 shows a case where four rivet openings RH are located on one side across the connecting plate 33A with the reinforcing material 3A attached to the core material 23A. In this case, the position of the connecting plate 33A of the reinforcing member 3A is set according to the position of the cut 237A.

Although the embodiment of the present invention has been described in detail above, the resin panel of the present invention is not limited to the above embodiment, and various improvements and changes may be made without departing from the spirit of the present invention. Of course.

FIG. 14 shows a resin board according to a modified example of each embodiment. FIG. 14A is a perspective view showing a part of a modified example of the core member 23 of the resin board according to the first embodiment. FIG. 14B is a perspective view showing a part of a modified example of the core material 23A of the resin board according to the second embodiment.
The core member 23 shown in FIG. 14A is a modified example in the case where the reinforcing member 3 having a U-shaped cross section is attached, as in the first embodiment described above. The core member 23 shown in FIG. 14A is different from the core member 23 shown in FIG. 4 in that a semicircular cutout C is formed at a position corresponding to the rivet opening RH in the recess 231a. By forming the notch C at a position corresponding to the opening RH for rivets, the core material 23 is not scraped by the drill when the hole is drilled after the resin laminated body is molded, and therefore the scraping of the core material 23 is performed. The resin board 1 will not be contaminated by the waste.

The core member 23A shown in FIG. 14(b) is a modified example in which the reinforcing member 3A having an H-shaped cross section is attached, as in the second embodiment described above. The core material 23A shown in FIG. 14B is different from the core material 23A shown in FIG. 13 in that recesses D (four positions) are formed in the recesses 231Aa at positions corresponding to the rivet openings RH. Similarly to FIG. 14A, when the hole is drilled after the resin laminate is formed, the recess D also reduces the amount of the core material 23 scraped by the drill because the recess D reduces the amount of the core material 23. The possibility that the resin board 1 is contaminated by shavings is reduced. A through hole may be provided in the core member 23 at a position corresponding to the opening RH instead of the recess D, but in that case, the left and right molds come into contact with each other when the mold is clamped. It is not preferable for promoting wear. Therefore, in the case of FIG. 14B, the recess D is set instead of the through hole.

In each of the embodiments described above, both the front surface and the back surface of the core material do not necessarily have to be flush with the plate surface on the front side and the plate surface on the back side of the reinforcing material. Depending on the above, either the front side or the back side may be flush with each other. For example, when only the front side touches the eyes in the normal use state of the resin board, only the front side may have the same plane.
In the above-described embodiment, the case where the hinge members 5L and 5R are attached to the front surface of the resin laminate 2 (the front surface of the first resin sheet 21) has been described, but the invention is not limited thereto. The hinge members 5L and 5R may be attached to the back side of the resin laminate 2 (the back surface of the second resin sheet 22). The surface to which the hinge member is attached is appropriately determined according to the function of the resin board.
In the above-mentioned embodiment, the plate thickness of the first plate (31, 31A) and the plate thickness of the second plate (32, 32A) of the reinforcing material may be different. For example, since the second plate (32, 32A) that is not fastened by rivets does not need to have a hole, its plate thickness can be determined independently of the plate thickness of the first plate (31, 31A). it can.

In the above-described embodiment, the hinge is given as an example of the member to be fastened, but the present invention is not limited to this example. The member to be fastened may be any member as long as it can be attached using fastening means, and may be, for example, a metal or resin bracket used for various purposes.

100... Resin container 10... Container body 10a... Storage space 12... Hinge mounting surface 1... Resin board 2... Resin laminated body 5L, 5R... Hinge member (fastened member)
3, 3A... Reinforcement material R... Rivet RH... Opening 21... First resin sheet 22... Second resin sheet 23, 23A... Core material 231, 231A... Front surface 232, 232A... Back surface 235a, 235b, 235A … Side wall surface (outer edge)
231a, 232a, 231Aa, 232Aa... Recess 237A... Notch EL... Reference line 31, 31A... First plate 311, 311A... Front side plate surface 312... Back side plate surface 32, 32A... Second plate 321... Front side plate Surface 322, 322A... Back side plate surface 33, 33A... Connecting plate 331... Inner side plate surface 332... Outer side plate surface 3Ae... End face C... Notch D... Recess 51, 52... Split mold 51a, 52a... Forming surface 511, 521 …Sliding part 90…Manipulator P…Fused resin sheet

Claims (5)

Core material,
A reinforcing member having a first plate provided on the front surface of the core member, a second plate provided on the back surface of the core member, and a connecting plate connecting the first plate and the second plate;
A skin material made of a resin sheet and covering the core material and the reinforcing material,
A member to be fastened mounted on the skin material by a fastening member penetrating the skin material and the first plate or the second plate of the reinforcing material;
Equipped with
The skin material is welded to the core material and the reinforcing material,
Moreover, the resin panel in which the front surface side skin material and the back surface side skin material are welded to each other at the peripheral edge to form a parting line . The plate thickness of a plate through which the fastening member penetrates among the first plate and the second plate of the reinforcing member is smaller than the plate thickness of the connecting plate,
The resin panel according to claim 1. The core material is formed with a recess for mounting at least one of the first plate and the second plate of the reinforcing material, whereby the front surface of the core material and the reinforcing material are formed. The front side plate surface of the first plate is the same plane, or the back surface of the core member and the back side plate surface of the second plate of the reinforcing member are the same plane,
The resin panel according to claim 1. The first plate and the second plate of the reinforcing member are arranged inside a reference line defined by an outer edge of the core member when the core member is seen in a plan view.
The resin panel according to claim 1. The core material is provided with a notch from the outer edge toward the inside,
A connecting plate of the reinforcing member is inserted into the notch,
The resin panel according to claim 4.

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