JP6024786B2 - Laminated structure - Google Patents

Description

The present invention relates to a laminated structure .

  A panel member made of a fiber reinforced resin material and provided with a corrugated plate portion may be arranged as a reinforcing member for a vehicle body (see, for example, Patent Document 1).

JP 2010-195352 A

  However, such prior art has room for improvement from the viewpoint of improving the bending rigidity with respect to the load in the wavelength direction of the corrugated plate portion.

In view of the above fact, an object of the present invention is to obtain a laminated structure capable of improving the bending rigidity with respect to the load in the wavelength direction of the corrugated plate portion.

The laminated structure of the present invention described in claim 1 comprises a first wall portion that forms undulations of a corrugated plate portion formed of a fiber reinforced resin material, and upper and lower end portions in the wave height direction of the corrugated plate portion. And a second wall portion connected to the first wall portion via a bent portion, and the second wall portion includes a general portion extending in the wavelength direction of the corrugated plate portion. The orientation direction of the reinforcing fibers arranged in the general part is set in a direction along the wavelength direction of the corrugated plate part, and the upper panel and the lower panel arranged opposite to each other in the wave height direction in the corrugated plate part A panel member is sandwiched, the upper panel and the lower panel are respectively joined to the panel member and form a closed cross section with the panel member, and the bent portion is formed in a curved shape, Same thickness as the first wall It is, wherein the end on the side of the bent portion of the second wall portion, gradually changing portion in which thickness is gradually reduced as the distance from the bending portion is formed.

According to the said structure, the panel member has the corrugated board part shape | molded with the fiber reinforced resin material, and the undulation of the corrugated board part is formed of the 1st wall part. Moreover, the upper-lower end part of the wave height direction in a corrugated plate part is comprised by the 2nd wall part, and the 2nd wall part is connected to the 1st wall part via the bending part. Here, a 2nd wall part is provided with the general part extended in the wavelength direction of a corrugated sheet part, and the orientation direction of the reinforced fiber arrange | positioned in the general part is set to the direction along the wavelength direction of a corrugated sheet part. Furthermore, in the laminated structure of the present invention, the panel member is sandwiched between the upper panel and the lower panel that are arranged to face each other in the wave height direction in the corrugated plate portion, and the upper panel and the lower panel are respectively joined to the panel member. At the same time, a closed cross section is formed by the panel member. For this reason, the laminated structure including the panel member is unlikely to bend and deform when a load in the wavelength direction of the corrugated plate portion is input.
Moreover, according to the said structure, the bending part is formed in curved shape and is set to the board thickness equivalent to a 1st wall part. For this reason, when a load is transmitted from one side of the wave height direction of the corrugated plate portion to the other side, the load is transmitted satisfactorily. In addition, a gradually changing portion is formed at the end of the second wall portion on the side of the bent portion, the thickness of which is gradually reduced as the distance from the bent portion increases. Therefore, local weakening is suppressed even if the plate thickness of the second wall portion is changed.
The laminated structure of the present invention described in claim 2 comprises a first wall portion that forms undulations of a corrugated plate portion formed of a fiber reinforced resin material, and upper and lower end portions in the wave height direction of the corrugated plate portion. And a second wall portion connected to the first wall portion via a bent portion, and the second wall portion includes a general portion extending in the wavelength direction of the corrugated plate portion. The orientation direction of the reinforcing fibers arranged in the general part is set in a direction along the wavelength direction of the corrugated plate part, and the upper panel and the lower panel arranged opposite to each other in the wave height direction in the corrugated plate part A panel member is sandwiched, the upper panel and the lower panel are respectively joined to the panel member and form a closed cross section with the panel member, and the bent portion is formed in a curved shape, Set to the same thickness as the second wall Is, the end on the side of the bending portion in the first wall portion, gradually changing portion in which thickness is gradually enlarged is formed as the distance from the bent portion.
According to the said structure, the panel member has the corrugated board part shape | molded with the fiber reinforced resin material, and the undulation of the corrugated board part is formed of the 1st wall part. Moreover, the upper-lower end part of the wave height direction in a corrugated plate part is comprised by the 2nd wall part, and the 2nd wall part is connected to the 1st wall part via the bending part. Here, a 2nd wall part is provided with the general part extended in the wavelength direction of a corrugated sheet part, and the orientation direction of the reinforced fiber arrange | positioned in the general part is set to the direction along the wavelength direction of a corrugated sheet part. Furthermore, in the laminated structure of the present invention, the panel member is sandwiched between the upper panel and the lower panel that are arranged to face each other in the wave height direction in the corrugated plate portion, and the upper panel and the lower panel are respectively joined to the panel member. At the same time, a closed cross section is formed by the panel member. For this reason, the laminated structure including the panel member is unlikely to bend and deform when a load in the wavelength direction of the corrugated plate portion is input.
Moreover, according to the said structure, the bending part is formed in curve shape and is set to the board thickness equivalent to a 2nd wall part. For this reason, a reinforced fiber can be made to follow further in the bending direction of a bending part. In addition, a gradually changing portion whose thickness is gradually increased as the distance from the bent portion increases is formed at the end of the first wall portion on the bent portion side. Therefore, even if the plate thickness of the first wall portion is changed, local weakening can be suppressed.
The laminated structure of the present invention described in claim 3 comprises a first wall portion that forms undulations of a corrugated plate portion formed of a fiber reinforced resin material, and upper and lower end portions in the wave height direction of the corrugated plate portion. And a second wall portion connected to the first wall portion via a bent portion, and the second wall portion includes a general portion extending in the wavelength direction of the corrugated plate portion. The orientation direction of the reinforcing fibers arranged in the general part is set in a direction along the wavelength direction of the corrugated plate part, and the upper panel and the lower panel arranged opposite to each other in the wave height direction in the corrugated plate part A panel member is sandwiched, and the upper panel and the lower panel are respectively joined to the panel member and form a closed cross section with the panel member, and from the bent portion to the first wall portion side The extension extends to the opposite side The extending portion is formed integrally with the bend together.
According to the said structure, the panel member has the corrugated board part shape | molded with the fiber reinforced resin material, and the undulation of the corrugated board part is formed of the 1st wall part. Moreover, the upper-lower end part of the wave height direction in a corrugated plate part is comprised by the 2nd wall part, and the 2nd wall part is connected to the 1st wall part via the bending part. Here, a 2nd wall part is provided with the general part extended in the wavelength direction of a corrugated sheet part, and the orientation direction of the reinforced fiber arrange | positioned in the general part is set to the direction along the wavelength direction of a corrugated sheet part. Furthermore, in the laminated structure of the present invention, the panel member is sandwiched between the upper panel and the lower panel that are arranged to face each other in the wave height direction in the corrugated plate portion, and the upper panel and the lower panel are respectively joined to the panel member. At the same time, a closed cross section is formed by the panel member. For this reason, the laminated structure including the panel member is unlikely to bend and deform when a load in the wavelength direction of the corrugated plate portion is input.
Moreover, according to the said structure, since the extension part is extended from the bending part on the opposite side to the 1st wall part side, and the extension part is integrally formed with the said bending part, it continues to a bending part. The second wall portion is subjected to a force that causes the bending portion to bend inward and a force that causes the L-shaped portion extending from the second wall portion to the extending portion to act, Cancel each other. Thereby, the internal curvature of a bending part is suppressed.
The laminated structure of the present invention described in claim 4 comprises a first wall portion that forms undulations of a corrugated plate portion formed of a fiber reinforced resin material, and upper and lower end portions in the wave height direction of the corrugated plate portion. And a second wall portion connected to the first wall portion via a bent portion, and the second wall portion includes a general portion extending in the wavelength direction of the corrugated plate portion. The orientation direction of the reinforcing fibers arranged in the general part is set in a direction along the wavelength direction of the corrugated plate part, and the upper panel and the lower panel arranged opposite to each other in the wave height direction in the corrugated plate part A panel member is sandwiched, and the upper panel and the lower panel are respectively joined to the panel member and form a closed cross section with the panel member, and the general portion is more than the first wall portion. High density .
According to the said structure, the panel member has the corrugated board part shape | molded with the fiber reinforced resin material, and the undulation of the corrugated board part is formed of the 1st wall part. Moreover, the upper-lower end part of the wave height direction in a corrugated plate part is comprised by the 2nd wall part, and the 2nd wall part is connected to the 1st wall part via the bending part. Here, a 2nd wall part is provided with the general part extended in the wavelength direction of a corrugated sheet part, and the orientation direction of the reinforced fiber arrange | positioned in the general part is set to the direction along the wavelength direction of a corrugated sheet part. Furthermore, in the laminated structure of the present invention, the panel member is sandwiched between the upper panel and the lower panel that are arranged to face each other in the wave height direction in the corrugated plate portion, and the upper panel and the lower panel are respectively joined to the panel member. At the same time, a closed cross section is formed by the panel member. For this reason, the laminated structure including the panel member is unlikely to bend and deform when a load in the wavelength direction of the corrugated plate portion is input.
In addition, according to the above configuration, the general portion has a higher density than the first wall portion, and the bending strength and bending rigidity of the general portion with respect to the load in the wavelength direction of the corrugated plate portion are improved. It is difficult to buckle against a load in the wavelength direction.

The laminated structure according to a fifth aspect of the present invention is the structure according to any one of the first to fourth aspects, wherein the general part contains at least bubbles larger in diameter than the reinforcing fibers. Absent.

  According to the above configuration, the general part does not contain at least bubbles having a diameter larger than that of the reinforcing fibers. For example, the general part has a higher density than the case of containing bubbles having a larger diameter than the reinforcing fibers. When viewed in the cut surface in the plate thickness direction, the reinforcing fibers can be made to follow the wavelength direction of the corrugated plate portion by the amount not containing the bubbles. For this reason, the panel member is more difficult to bend and deform when a load in the wavelength direction of the corrugated plate portion is input.

As described above, according to this onset Ming laminated structure has an excellent effect that it is possible to improve the bending rigidity against a load in the wavelength direction of the corrugated plate portion.
Furthermore, according to the laminated structure according to claim 1, a load is transmitted from one side of the wave plate portion in the wave height direction to the other side while suppressing the weakening of the second wall portion locally. In some cases, the load can be transmitted satisfactorily.
According to the laminated structure of claim 2, the bending rigidity of the bending portion with respect to the load in the wavelength direction of the corrugated plate portion is controlled by the orientation of the reinforcing fiber while suppressing the local weakening of the first wall portion. It has an excellent effect that improvement can be achieved.
According to the laminated structure of Claim 3, it has the outstanding effect that the internal curvature of the bending part which connects a 1st wall part and a 2nd wall part can be suppressed.
According to the laminated structure of the fourth aspect, there is an excellent effect that the general part can be hardly buckled against the load in the wavelength direction of the corrugated plate part.

The laminated structure according to claim 5 has an excellent effect of further improving the bending rigidity with respect to the load in the wavelength direction of the corrugated plate portion.

It is a perspective view which shows the laminated structure containing the panel member which concerns on the 1st Embodiment of this invention. It is a perspective view which shows the panel member of FIG. FIG. 3 is an enlarged cross-sectional view taken along line 3-3 in FIG. 2. It is a perspective view which shows typically the orientation direction of a reinforced fiber in the state which looked at the general part of the horizontal wall part of FIG. 1 from diagonally upward side. FIG. 5A is a vertical cross-sectional view schematically showing a cross-sectional state immediately before the second step of the portion that becomes the general portion of the horizontal wall portion. FIG. 5B is a vertical cross-sectional view schematically showing a cross-sectional state of the general portion of the horizontal wall portion. It is a figure which shows the manufacturing method of the panel member of FIG. FIG. 6A shows the initial stage of the first step. FIG. 6B shows the middle stage of the first step. FIG. 6C shows the second step. It is sectional drawing shown in the state which cut | disconnected the panel member which concerns on the 2nd Embodiment of this invention along the wavelength direction of a corrugated sheet part. It is sectional drawing shown in the state which cut | disconnected the panel member which concerns on the 3rd Embodiment of this invention along the wavelength direction of a corrugated sheet part. It is a perspective view which shows the laminated structure containing the panel member which concerns on the 4th Embodiment of this invention. It is a perspective view which shows the panel member of FIG. FIG. 10 is an enlarged cross-sectional view taken along line 11-11 in FIG. It is a sectional view showing a state where a modified example taken along in the wavelength direction of the corrugated portion of the fourth embodiment of the panel member. It is sectional drawing shown in the state which cut | disconnected the laminated structure containing the panel member which concerns on the 5th Embodiment of this invention along the wavelength direction of a corrugated sheet part.

[First Embodiment]
A panel member according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of a laminated structure 10 including a panel member 20 according to this embodiment. 2 is a perspective view of the panel member 20, and FIG. 3 is an enlarged cross-sectional view taken along the line 3-3 in FIG.

  The laminated structure 10 shown in FIG. 1 can be applied to, for example, a frame (a stack frame that supports a stack unit as an example) disposed below a floor panel of a vehicle. When the stacked structure 10 is used as the stack frame, as an example, the stacked structure 10 is arranged so that the arrow W direction is along the vehicle width direction.

  In the laminated structure 10, a corrugated panel member 20 is sandwiched between a flat upper panel 12 constituting the upper end and a flat lower panel 14 constituting the lower end. The upper panel 12 and the lower panel 14 are made of resin as an example. However, these may be made of metal. The upper panel 12 and the lower panel 14 are joined (bonded as an example) to the panel member 20. As a result, the upper panel 12 and the panel member 20 form a closed section 18A, and the lower panel 14 and the panel member 20 form a closed section 18B. The laminated structure 10 has a structure having high rigidity with respect to loads f1 and f2 along the extending direction of the closed cross-section portions 18A and 18B.

  The panel member 20 shown by FIG. 2 is shape | molded by the fiber reinforced resin material (FRP). The fiber reinforced resin material is a composite material in which reinforcing fibers such as carbon fibers and glass fibers are solidified with a resin (in this embodiment, a thermoplastic resin as an example). The panel member 20 includes a corrugated plate portion 22 having a corrugated shape. The wave height of the corrugated plate portion 22 is set to a dimension that is sufficiently longer than the base plate thickness before molding (for example, twice or more the base plate thickness before molding). The corrugation of the corrugated plate portion 22 is formed by a standing wall portion 24 as a first wall portion. The standing wall portion 24 is slightly inclined toward one side or the other side in the wavelength direction (arrow W direction) of the corrugated plate portion 22 toward the upper side of the wave height direction (arrow H direction) of the corrugated plate portion 22. A plurality of the 22 wavelength directions (arrow W direction) are arranged side by side, and the inclination directions are alternately changed.

  The upper and lower ends of the wave plate portion 22 in the wave height direction (arrow H direction) are configured by horizontal wall portions 28 as second wall portions. The horizontal wall part 28 is connected to the standing wall part 24 via the bending part 26, and connects the adjacent standing wall parts 24 to each other alternately. In FIG. 3, the boundary line between the bent portion 26 and the standing wall portion 24 is indicated by a two-dot chain line a, and the boundary line between the bent portion 26 and the lateral wall portion 28 is indicated by a two-dot chain line b. The lateral wall portion 28 includes a flat plate-like general portion 28 </ b> A that extends in the wavelength direction (arrow W direction) of the corrugated plate portion 22. In the drawing, the range of the lateral wall portion 28 and the range of the general portion 28A of the lateral wall portion 28 are the same.

  The plate thickness t1 of the general portion 28A of the horizontal wall portion 28 is set to be thinner than the plate thickness t2 of the standing wall portion 24 (adoption of a differential thickness structure). In addition, the bent portion 26 that connects the standing wall portion 24 and the lateral wall portion 28 is formed in a curved shape, and the plate thickness is gradually reduced from the end portion on the standing wall portion 24 side toward the end portion on the lateral wall portion 28 side. ing. That is, the bent portion 26 is a gradually changing portion of the plate thickness. In the present embodiment, as an example, the radially outer surface 26A of the bent portion 26 is a curved surface having a predetermined radius of curvature, and the radially inner surface 26B of the bent portion 26 is the end on the side of the standing wall portion 24. The curved surface has a curvature radius that is gradually increased from the portion toward the end on the side of the lateral wall portion 28.

  As a modification, the radially inner surface (26B) of the bent portion (26) is a curved surface having a predetermined radius of curvature, and the radially outer surface (26A) of the bent portion (26) is a standing wall. The curved surface may be a curved surface whose curvature radius is gradually reduced from the end on the side of the portion (24) toward the end on the side of the lateral wall (28). As another modification, the radius of curvature as the surface (26B) on the radially inner side of the bent portion (26) goes from the end on the side of the standing wall (24) toward the end on the side of the lateral wall (28). Is a gradually enlarged curved surface, and the radially outer surface (26A) of the bent portion (26) is directed from the end portion on the standing wall portion (24) side to the end portion on the side wall portion (28) side. Accordingly, the curved surface may be a curved surface whose radius of curvature is gradually reduced.

  FIG. 4 schematically shows the orientation direction of the reinforcing fibers 30 in a state in which the general portion 28A of the lateral wall portion 28 is viewed obliquely from above. FIG. 5B schematically shows a cross-sectional state of the general portion 28A of the lateral wall portion 28 observed by a cross section with an electron microscope from the same direction as FIG. As shown in FIG. 5B, the general part 28 </ b> A does not contain at least bubbles larger in diameter than the reinforcing fibers 30. In addition, it is preferable that the general part 28A does not contain any bubbles, and in this embodiment, it is set as such. 4 and 5B, the orientation direction of the reinforcing fibers 30 arranged in the general portion 28A of the lateral wall portion 28 is the wavelength direction (arrow W) of the corrugated plate portion 22 (see FIG. 2). Direction).

(Configuration of press mold)
Here, the press die 34 for press-molding the panel member 20 will be described with reference to FIG. As shown in FIG. 6C, the press die 34 is a die having a lower die 36 and an upper die 40.

  The lower mold 36 includes a first molding surface 38 for press molding of the panel member 20. The first molding surface 38 of the lower mold 36 has a cross-sectional shape shown in FIG. 6C extending in a direction perpendicular to the paper surface of FIG. 6C, and has unevenness in the left-right direction of FIG. The shape is alternately arranged, and includes a bottom surface 38A, a vertical surface 38B, and a top surface 38C. The bottom surface 38 </ b> A and the top surface 38 </ b> C are planar and are portions for forming the general portion 28 </ b> A of the lateral wall portion 28. Further, the vertical surface 38B is a flat portion and is a portion where the standing wall portion 24 is formed.

  On the other hand, the upper mold 40 is disposed opposite to the upper side of the lower mold 36 and includes a second molding surface 42 for press molding of the panel member 20. The second molding surface 42 of the upper mold 40 has a cross-sectional shape shown in FIG. 6C extending in a direction perpendicular to the paper surface of FIG. 6C, and has unevenness in the left-right direction of FIG. The shape is alternately arranged, and includes a bottom surface 42A, a vertical surface 42B, and a top surface 42C. The bottom surface 42 </ b> A and the top surface 42 </ b> C are planar and are portions for forming the general portion 28 </ b> A of the lateral wall portion 28. The vertical surface 42 </ b> B has a planar shape and is a part where the standing wall portion 24 is formed.

  The distance d1 between the bottom surface 42A of the second molding surface 42 in the upper mold 40 and the top surface 38C of the first molding surface 38 in the lower mold 36 is equal to the top surface 42C of the second molding surface 42 in the upper mold 40 and the lower mold. 36 is set to be equal to the distance d2 between the first molding surface 38 and the bottom surface 38A. The distances d1 and d2 are set to be narrower than the distance d3 between the vertical surface 42B of the second molding surface 42 of the upper mold 40 and the vertical surface 38B of the first molding surface 38 of the lower mold 36. .

(Manufacturing method and action / effect of panel member)
Next, the operation and effect of the present embodiment will be described while describing a method for manufacturing the panel member 20 using the press die 34. In this embodiment, the manufacturing method of the panel member 20 is performed in the order of FIG. 6A, FIG. 6B, and FIG. 6C by stamping molding. 6A shows the initial stage of the first process, FIG. 6B shows the middle stage of the first process, and FIG. 6C shows the second process (when the mold clamping is completed).

  First, the sheet-like fiber reinforced resin material 32 shown in FIG. 6A is placed on the lower mold 36 in a heated state. In addition, the fiber reinforced resin material 32 which is a base material is a stampable sheet in which reinforcing fibers are randomly oriented. As shown in FIG. 6A and FIG. 6B, in the first step, the second molding surface 42 of the upper die 40 in a state where the sheet-like fiber reinforced resin material 32 is arranged on the lower die 36. Is made relatively close to the first molding surface 38 of the lower mold 36, and the fiber reinforced resin material 32 is formed into a corrugated plate shape by pressing. At this time, in the fiber reinforced resin material 32, the portion pressed against the top surface 42C of the second molding surface 42 of the upper mold 40 and the top surface 38C of the first molding surface 38 of the lower mold 36 are pressurized. The part is stretched to reduce the plate thickness. In the stretched portion, the reinforcing fibers are oriented along the stretched direction. FIG. 6C shows the positions of the bottom surface 42A and the top surface 42C of the upper mold 40 when the first step is completed by a two-dot chain line.

  FIG. 5A is a diagram schematically showing a state immediately before the second step of the portion that becomes the general portion 28A (see FIG. 5B) of the lateral wall portion 28 by observing a cross section with an electron microscope from the same direction as FIG. It is. As shown in FIG. 5A, the portion that becomes the general portion 28 </ b> A (see FIG. 5B) of the lateral wall portion 28 contains bubbles B having a larger diameter than the reinforcing fibers 30.

  Next, as shown in FIG. 6C, in the second step after the first step, the second molding surface 42 of the upper die 40 is further relative to the first molding surface 38 of the lower die 36. The portion that becomes the general portion 28A of the lateral wall portion 28 is compressed in the plate thickness direction. Thereby, in the press die 34, the pressure difference between the pressure for molding the general portion 28A of the lateral wall portion 28 and the pressure for molding the other portion is reduced, and molding defects are suppressed. Then, as shown in FIG. 5B, the density of the portion that becomes the general portion 28A of the lateral wall portion 28 is increased, and the bubbles B (see FIG. 5A) are eliminated. Further, since the general portion 28A of the lateral wall portion 28 does not contain the bubbles B (see FIG. 5A), the orientation direction of the reinforcing fibers 30 is corrugated when the cut surface in the plate thickness direction in the general portion 28A is viewed. Further along the wavelength direction (arrow W direction) of the portion 22 (see FIG. 2).

  The panel member 20 shown in FIG. 2 manufactured in this way has improved bending strength and bending rigidity of the general portion 28A of the lateral wall portion 28 with respect to loads F1 and F2 in the wavelength direction (arrow W direction) of the corrugated plate portion 22. The general portion 28A of the lateral wall portion 28 is less likely to buckle against the loads F1 and F2. That is, since the general portion 28A of the lateral wall portion 28 is sufficiently pressurized by the press die 34 (see FIG. 6), the original material strength (or strength close thereto) of the fiber reinforced resin material 32 (see FIG. 6) is obtained. It is possible to demonstrate. As a result, when the loads F1 and F2 in the wavelength direction (arrow W direction) of the corrugated plate portion 22 are input to the panel member 20, for example, in the wave height direction (arrow H direction) in the corrugated plate portion (22). The panel member 20 according to the present embodiment is less likely to bend and deform as compared to a panel member that contains bubbles having a diameter larger than that of the reinforcing fibers in the general portions of the upper and lower end portions and the reinforcing fibers are randomly oriented.

  As described above, according to the panel member 20, the press die 34 (see FIG. 6), and the method for manufacturing the panel member 20 according to the present embodiment, the load in the wavelength direction (arrow W direction) of the corrugated plate portion 22. The bending rigidity with respect to F can be improved. Further, by improving the bending rigidity, for example, when the inside of the portion corresponding to the general portion 28A of the lateral wall portion 28 is compared with the contrast structure in a state as shown in FIG. The mass required to obtain rigidity can be reduced.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIG. 7 is a cross-sectional view of a panel member 50 that can be arranged instead of the panel member 20 of the laminated structure 10 of the first embodiment shown in FIG. 1 (a view corresponding to FIG. 3 in the first embodiment). It is shown in As shown in this figure, the panel member 50 is a panel member 20 according to the first embodiment in that the bending portion 54 is not a gradual change portion but a gradual change portion 56B is provided in the lateral wall portion 56 (see FIG. Different from 3). Other configurations are substantially the same as those of the first embodiment. Therefore, components that are substantially the same as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  The panel member 50 shown in FIG. 7 is formed of a fiber reinforced resin material similar to the panel member 20 (see FIG. 3 and the like) in the first embodiment, and includes a corrugated plate portion 52. The undulation of the corrugated plate portion 52 is formed by the standing wall portion 24.

  Upper and lower ends of the wave height direction (arrow H direction) in the corrugated plate portion 52 are configured by horizontal wall portions 56 as second wall portions. The horizontal wall part 56 is connected to the standing wall part 24 through the bending part 54, and connects the adjacent standing wall parts 24 alternately up and down. The horizontal wall portion 56 includes a flat plate-like general portion 56 </ b> A that extends in the wavelength direction (arrow W direction) of the corrugated plate portion 52.

  The plate thickness t3 of the general portion 56A of the horizontal wall portion 56 is set to be thinner than the plate thickness t2 of the standing wall portion 24. The general portion 56A of the lateral wall portion 56 is pressurized during molding and does not contain at least bubbles having a diameter larger than that of the reinforcing fibers. In addition, it is preferable that the general part 56A does not contain any bubbles, and in this embodiment, it is set as such. In addition, the orientation direction of the reinforcing fibers arranged in the general portion 56A of the lateral wall portion 56 is set in a direction along the wavelength direction of the corrugated plate portion 52 (arrow W direction).

  The bent portion 54 that connects the standing wall portion 24 and the lateral wall portion 56 is formed in a curved shape and is set to have a plate thickness equivalent to that of the standing wall portion 24. In FIG. 7, the boundary line between the bent portion 54 and the standing wall portion 24 is indicated by a two-dot chain line c, and the boundary line between the bent portion 54 and the lateral wall portion 56 is indicated by a two-dot chain line e. On the other hand, a gradually changing portion 56 </ b> B whose thickness is gradually reduced as the distance from the bent portion 54 is formed at the end of the lateral wall portion 56 on the bent portion 54 side. In other words, the general portion 56A of the lateral wall portion 56 is connected to the bending portion 54 via the gradual change portion 56B. In FIG. 7, the boundary line between the gradual change portion 56B and the general portion 56A is indicated by a two-dot chain line f.

  In the gradually changing portion 56 </ b> B, the outer surface 56 </ b> B <b> 1 continuous with the radially outer surface of the bent portion 54 is formed in the same plane as the surface of the general portion 56 </ b> A of the adjacent lateral wall portion 56. Further, in the gradual change portion 56B, the inner surface 56B2 continuous with the radially inner surface of the bent portion 54, the outer surface 56B1 from the end portion on the bent portion 54 side toward the end portion on the general portion 56A side of the lateral wall portion 56. It is inclined in the direction of gradually approaching the side.

  The press mold for press-molding the panel member 50 has a lower mold and an upper mold, although illustration is omitted. The lower mold includes a first molding surface for press molding of the panel member 50. In addition, the upper die is provided with a second molding surface for press molding of the panel member 50 so as to face the upper side of the lower die. In addition, a portion of the upper mold second molding surface where the general portion 56A of the lateral wall portion 56 is molded is set to have a smaller distance from the lower mold first molding surface than a portion where the standing wall portion 24 is molded. ing. Moreover, the manufacturing method of the panel member 50 using such a press type | mold is performed in the procedure similar to 1st Embodiment.

  Also by the configuration of the present embodiment described above, the same operations and effects as those of the first embodiment described above can be obtained. In addition, since the bent portion 54 is formed in a curved shape and set to a plate thickness equivalent to that of the standing wall portion 24, a load is transmitted from one side of the wave plate portion 52 in the wave height direction (arrow H direction) to the other side. The load is transmitted well. For example, when the panel member 50 is sandwiched between the upper panel 12 and the lower panel 14 similarly to the panel member 20 in the first embodiment shown in FIG. 1, the load between the upper panel 12 and the lower panel 14. The transmission (propagation) performance is also good. Further, since the gradually changing portion 56B is formed instead of the suddenly changing portion at the end of the side wall portion 56 shown in FIG. 7 on the side of the bent portion 54, even if the plate thickness of the side wall portion 56 is changed, it is locally changed. Weakening can be suppressed.

[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 8 is a cross-sectional view of a panel member 60 that can be arranged instead of the panel member 20 of the laminated structure 10 of the first embodiment shown in FIG. 1 (a view corresponding to FIG. 3 in the first embodiment). It is shown in As shown in this figure, the panel member 60 is a panel member 20 according to the first embodiment in that the gradually changing portion 64B is provided in the standing wall portion 64 without using the bending portion 66 as a gradually changing portion (see FIG. Different from 3). Other configurations are substantially the same as those of the first embodiment. Therefore, components that are substantially the same as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  A panel member 60 shown in FIG. 8 is formed of the same fiber reinforced resin material as the panel member 20 (see FIG. 3 and the like) in the first embodiment, and includes a corrugated plate portion 62. The corrugation of the corrugated plate portion 62 is formed by a standing wall portion 64 as a first wall portion. The standing wall portion 64 is a component that is substantially the same as the standing wall portion 24 in the first embodiment, except for the points described below.

  The upper and lower ends of the wave plate portion 62 in the wave height direction (arrow H direction) are constituted by the lateral wall portion 28. The horizontal wall part 28 is connected to the standing wall part 64 via the bending part 66, and connects the adjacent standing wall parts 64 alternately up and down. The plate thickness t1 of the general portion 28A of the horizontal wall portion 28 is set to be thinner than the plate thickness t4 of the general portion 64A of the standing wall portion 64 (portion other than the gradually changing portion 64B described later). The general portion 28A of the lateral wall portion 28 is pressurized at the time of molding and does not contain at least bubbles having a diameter larger than that of the reinforcing fibers. In addition, it is preferable that the general part 28A does not contain any bubbles, and in this embodiment, it is set as such. In addition, the orientation direction of the reinforcing fibers arranged in the general portion 28A of the lateral wall portion 28 is set to a direction along the wavelength direction (arrow W direction) of the corrugated plate portion 62.

  The bent portion 66 that connects the upright wall portion 64 and the lateral wall portion 28 is formed in a curved shape and has a plate thickness equivalent to that of the lateral wall portion 28. In FIG. 8, the boundary line between the bent portion 66 and the standing wall portion 64 is indicated by a two-dot chain line g, and the boundary line between the bent portion 66 and the lateral wall portion 28 is indicated by a two-dot chain line h. On the other hand, at the end of the standing wall portion 64 on the side of the bending portion 66, a gradually changing portion 64B is formed in which the plate thickness is gradually increased as the distance from the bending portion 66 increases. In other words, the general portion 64A of the standing wall portion 64 is connected to the bending portion 66 via the gradual change portion 64B. In FIG. 8, a boundary line between the gradual change portion 64B and the general portion 64A is indicated by a two-dot chain line i.

  In the gradually changing portion 64B, a surface 64B2 continuous with the radially inner surface of the bent portion 66 is formed in the same plane as the surface of the general portion 64A of the adjacent standing wall portion 64. Further, in the gradually changing portion 64B, a surface 64B1 that is continuous with the radially outer surface of the bent portion 66 is an opposite surface as it goes from the end portion on the bent portion 66 side toward the end portion on the general portion 64A side of the standing wall portion 64. It is inclined in a direction gradually separating from the surface 64B2 side.

  The press mold for press-molding the panel member 60 has a lower mold and an upper mold, although illustration is omitted. The lower mold includes a first molding surface for press molding of the panel member 60. In addition, the upper mold is disposed opposite to the upper side of the lower mold and includes a second molding surface for press molding of the panel member 60. Moreover, the site | part which shape | molds the general part 28A of the horizontal wall part 28 among the said 2nd shaping | molding surface of the said upper mold is between the 1st shaping | molding surfaces of the said lower mold rather than the site | part which shape | molds the standing wall part 64 (general part 64A). The interval is set narrow. Moreover, the manufacturing method of the panel member 60 using such a press type | mold is performed in the procedure similar to 1st Embodiment.

  Also by the configuration of the present embodiment described above, the same operations and effects as those of the first embodiment described above can be obtained. Further, in the present embodiment, since the bent portion 66 is formed in a curved shape and set to a plate thickness equivalent to that of the lateral wall portion 28, the reinforcing fibers can be further aligned in the bending direction of the bent portion 66. Further, since the gradually changing portion 64B is formed at the end of the standing wall portion 64 on the bent portion 66 side, local weakening is suppressed even if the plate thickness of the standing wall portion 64 is changed.

[Fourth Embodiment]
Next, the 4th Embodiment of this invention is described using FIGS. 9-11. FIG. 9 is a perspective view of the laminated structure 70 including the panel member 72 according to the present embodiment. 10 is a perspective view of the panel member 72, and FIG. 11 is an enlarged cross-sectional view taken along line 11-11 of FIG. The present embodiment has substantially the same configuration as the first embodiment except for the points described below. Therefore, components that are substantially the same as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 9, in the laminated structure 70, a corrugated panel member 72 is sandwiched between the upper panel 12 constituting the upper end portion and the lower panel 16 constituting the lower end portion. . The lower panel 16 has the same configuration as the lower panel 14 (see FIG. 1) in the first embodiment, except that a later-described recessed groove portion 16A (see FIG. 11) is formed. The panel member 72 has the same configuration as that of the panel member 20 (see FIGS. 1 to 3) in the first embodiment except for the points described below.

  As shown in FIGS. 9 and 10, the panel member 72 is formed with blocking wall portions 76 at both ends in the extending direction (arrow L direction) of the flange portion 74 that is convex upward. . The blocking wall portion 76 is a vertical wall portion that closes both sides in the extending direction (arrow L direction) of the flange portion 74. The extending direction (arrow L direction) of the flange portion 74 is a direction orthogonal to the wavelength direction (arrow W direction) of the corrugated plate portion 22 and orthogonal to the wave height direction (arrow H direction) of the corrugated plate portion 22. .

  As shown in FIG. 11, from the side wall portion 28, the lower wall portion (the side wall portion 28 (28 </ b> X)) and the bent portion 26 (26 </ b> X) connected to the standing wall portion 24 are the side of the standing wall portion 24. An extending portion 78 extends on the opposite side. The extending portion 78 is formed integrally with the bent portion 26 (26X) on the base side, and extends in the extending direction of the flange portion 74 (direction perpendicular to the paper surface of FIG. 11). On the other hand, the lower panel 16 has a recessed groove portion 16 </ b> A corresponding to each flange portion 74. Each recessed groove portion 16 </ b> A has a pair of extending portions 78 formed below each flange portion 74.

  The press mold for press-molding the panel member 72 has a lower mold and an upper mold, although illustration is omitted. The lower mold includes a first molding surface for press molding of the panel member 72. In addition, the upper mold is provided with a second molding surface for press molding of the panel member 72 so as to face the upper side of the lower mold. Further, a portion of the upper mold second molding surface where the general portion 28A of the lateral wall portion 28 is molded is set to be narrower than the portion where the standing wall portion 24 is molded than the first molding surface of the lower mold. ing. Moreover, the manufacturing method of the panel member 72 using such a press type | mold is performed in the procedure similar to 1st Embodiment.

  Also by the configuration of the present embodiment, the same operations and effects as those of the first embodiment described above can be obtained. Further, due to the anisotropy of the reinforcing fiber, the bending portion 26 (26X) is subjected to an inward warping force to reduce the obtuse angle of the bending portion 26 (26X). This can be suppressed. That is, the lateral wall portion 28 (28X) continuous to the bent portion 26 (26X) has a force to cause the bent portion 26 (26X) to warp and the L extending from the lateral wall portion 28 (28X) to the extending portion 78. The force which tries to warp the character-shaped part acts, and these cancel each other. Therefore, the internal curvature of the bending part 26 (26X) is suppressed, and the dimensional accuracy in the bending part 26 (26X) improves. As a result, it is possible to prevent or effectively suppress the separation of the lateral wall portion 28 (28X) from the adhesion surface with the lower panel 16.

[Modification of Panel Member of Fourth Embodiment]
Next, a modified example of the panel member 72 of the fourth embodiment will be described. FIG. 12 shows a modification of the panel member 72 of the fourth embodiment. In addition, about the structure part similar to the panel member 72, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  As shown in FIG. 12, the panel member 80 is also on the side of the standing wall portion 24 from the bent portion 26 (26 Y) that connects the standing wall portion 24 and the lateral wall portion 28 (28 Y) that is the upper wall portion of the lateral wall portion 28. The extension part 82 is extended on the opposite side. The extending part 82 is formed integrally with the bent part 26 (26Y) on the base side.

  Even with such a configuration, the operation and effect of the fourth embodiment can be obtained. Further, due to the anisotropy of the reinforcing fiber, the bending portion 26 (26Y) is subjected to an inward warping force to reduce the obtuse angle of the bending portion 26 (26Y). This can be suppressed. That is, the lateral wall portion 28 (28Y) continuous to the bent portion 26 (26Y) has a force to cause the bent portion 26 (26Y) to warp and the L extending from the lateral wall portion 28 (28Y) to the extending portion 82. The force which tries to warp the character-shaped part acts, and these cancel each other. Therefore, the internal curvature of the bending part 26 (26Y) is suppressed, and the dimensional accuracy in the bending part 26 (26Y) improves.

[Fifth Embodiment]
Next, a fifth embodiment of the present invention will be described with reference to FIG. FIG. 13 is a cross-sectional view of the laminated structure 88 including the panel member 90 according to the present embodiment cut along the wavelength direction (arrow W direction) of the corrugated plate portion 22 (FIG. 11 of the fourth embodiment). The figure corresponding to The present embodiment has substantially the same configuration as the fourth embodiment except for the points described below. For this reason, in this embodiment, about the component substantially the same as 1st, 4th embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  As shown in FIG. 13, the panel member 90 of the present embodiment has a second wall portion instead of the lateral wall portion 28 (28X) (see FIG. 11) constituting the lower wall portion of the fourth embodiment. A lower wall portion 92 is formed. In addition, the horizontal wall part 28 (28Y) which comprises the upper wall part of the panel member 90 is formed similarly to 4th Embodiment. The lower wall portion 92 constitutes a lower end portion in the wave height direction (arrow H direction) in the corrugated plate portion 22 and is connected to the standing wall portion 24 via a bent portion 26 (26X).

  The lower wall portion 92 includes a flat plate-like general portion 92A that is bonded to the lower panel 14 in a surface contact state. The general portion 92 </ b> A extends in the wavelength direction (arrow W direction) of the corrugated plate portion 22. The plate thickness t5 of the general portion 92A is equal to the plate thickness t1 of the lateral wall portion 28 (28Y) constituting the upper wall portion, and is set to be thinner than the plate thickness t2 of the standing wall portion 24. The general portion 92A is pressurized at the time of molding and does not contain at least bubbles larger in diameter than the reinforcing fibers. In addition, it is preferable that the general part 92A does not contain any bubbles, and in this embodiment, it is set as such. Further, the orientation direction of the reinforcing fibers arranged in the general portion 92A is set to a direction along the wavelength direction (arrow W direction) of the corrugated plate portion 22.

  The lower surface of the general portion 92 </ b> A is set on the same plane as the lower surface of the extending portion 78. Further, the end portion of the general portion 92 </ b> A on the extension portion 78 side is disposed with a slight gap between the end portion 78 and the extension portion 78.

  Moreover, the lower wall part 92 is provided with the shelf part 92C formed continuously from the bending part 26 (26X). The shelf portion 92 </ b> C is formed on the upper side of the space between the general portion 92 </ b> A and the extension portion 78 and is disposed in parallel to the lower panel 14. That is, the shelf 92 </ b> C also extends in the wavelength direction (arrow W direction) of the corrugated plate 22. In the present embodiment, the plate thickness t6 of the shelf portion 92C is equal to the plate thickness t5 of the general portion 92A, and is set to be thinner than the plate thickness t2 of the standing wall portion 24. The shelf 92C is pressurized at the time of molding, and does not contain at least bubbles larger in diameter than the reinforcing fibers. In addition, it is preferable that no air bubbles are contained in the shelf 92C, and in this embodiment, it is set as such. In addition, the orientation direction of the reinforcing fibers arranged on the shelf portion 92 </ b> C is set to a direction along the wavelength direction (arrow W direction) of the corrugated plate portion 22.

  An end portion of the shelf portion 92C opposite to the bent portion 26 (26X) and an end portion of the general portion 92A on the extension portion 78 side are integrally connected by a connecting portion 92B. The connecting portion 92 </ b> B is formed substantially parallel to the extending portion 78.

  The press mold for press-molding the panel member 90 has a lower mold and an upper mold, although illustration is omitted. The lower mold includes a first molding surface for press molding of the panel member 90. In addition, the upper die is provided with a second molding surface for press molding of the panel member 90 so as to face the upper side of the lower die. Further, in the second molding surface of the upper mold, the portion for forming the general portion 28A of the lateral wall portion 28 (28Y) and the general portion 92A and the shelf portion 92C of the lower wall portion 92 is more than the portion for forming the standing wall portion 24. The space between the lower mold and the first molding surface is set narrow. Moreover, the manufacturing method of the panel member 90 using such a press type | mold is performed in the procedure similar to 1st Embodiment.

  Also by the configuration of the present embodiment described above, the same operations and effects as those of the first and fourth embodiments described above can be obtained. Further, in the present embodiment, a flat lower panel 14 shown in FIG. 13 can be applied instead of the lower panel 16 in which the recessed groove portion 16A as shown in FIG. 11 (fourth embodiment) is formed. The 14 shapes can be simplified.

  In the present embodiment, since the recessed portion 94 that opens downward is formed by the extending portion 78, the bent portion 26 (26X), the shelf portion 92C, and the connecting portion 92B, this recessed portion 94 functions as a reservoir for adhesive. Can be made. That is, for example, when the general portion 92A of the panel member 90 and the lower panel 14 are bonded using an adhesive, it is possible that excess adhesive protrudes from the bonded portion. The agent can be stored in the recess 94. Therefore, the adhesive can be prevented from protruding to a wide range.

[Supplementary explanation of the embodiment]
Incidentally, as a reference example not in the embodiment of the present invention, the panel members, for example, the cross-sectional shape taken along the wavelength direction of the corrugated portion may be a panel member formed into a hat shape.

In addition, as a reference example that is not an embodiment of the present invention, one or both of the upper panel 12 and the lower panels 14 and 16 of the above embodiment may not be joined to the panel member.

  In addition, it is preferable that the general part does not contain any bubbles, but the general part contains bubbles having the same diameter as the reinforcing fibers or smaller diameter than the reinforcing fibers, and the general part is reinforced. A configuration in which bubbles slightly larger in diameter than fibers are contained can also be adopted.

  Further, as a modification of the above-described embodiment, the fiber reinforced resin material applied to the panel member may be a composite material obtained by solidifying reinforced fibers with a thermosetting resin. In this case, the manufacturing method of the panel member is based on the SMC method of pressing while heating.

  In addition, the said embodiment and the above-mentioned some modification can be implemented combining suitably.

  Although an example of the present invention has been described above, the present invention is not limited to the above, and it is needless to say that various modifications can be made without departing from the spirit of the present invention. .

10 Laminated structure
12 Upper panel
14 Lower panel
16 Lower panel
18A Closed section
18B Closed section 20 Panel member 22 Corrugated plate section 24 Standing wall section (first wall section)
26 Bending part 28 Horizontal wall part (second wall part)
28A General part 30 Reinforcing fiber 32 Fiber reinforced resin material 34 Press die 36 Lower die 38 First molding surface 40 Upper die 42 Second molding surface 50 Panel member 52 Corrugated plate portion 54 Bending portion 56 Horizontal wall portion (second wall portion)
56A General part 56B Gradual change part 60 Panel member 62 Corrugated sheet part 64 Standing wall part (first wall part)
64A General part 64B Gradual change part 66 Bending part
70 Laminated structure 72 Panel member 78 Extension part 80 Panel member 82 Extension part
88 Laminated structure 90 Panel member 92 Lower wall (second wall)
92A General part H Wave height direction W Wavelength direction

Claims (5)

A first wall portion that forms the undulations of the corrugated plate portion formed of a fiber reinforced resin material, and upper and lower end portions in the wave height direction of the corrugated plate portion are configured and connected to the first wall portion via a bent portion. A second wall portion, and a panel member provided with
The second wall portion includes a general portion extending in the wavelength direction of the corrugated plate portion,
The orientation direction of the reinforcing fibers arranged in the general part is set in a direction along the wavelength direction of the corrugated part,
The panel member is sandwiched between an upper panel and a lower panel that are disposed to face each other in the wave height direction in the corrugated plate portion, and the upper panel and the lower panel are respectively joined to the panel member and the panel member. Each of which forms a closed cross section ,
The bent portion is formed in a curved shape and set to the same thickness as the first wall portion,
A laminated structure in which a gradually changing portion whose thickness is gradually reduced as a distance from the bent portion is formed at an end of the second wall portion on the bent portion side . A first wall portion that forms the undulations of the corrugated plate portion formed of a fiber reinforced resin material, and upper and lower end portions in the wave height direction of the corrugated plate portion are configured and connected to the first wall portion via a bent portion. A second wall portion, and a panel member provided with
The second wall portion includes a general portion extending in the wavelength direction of the corrugated plate portion,
The orientation direction of the reinforcing fibers arranged in the general part is set in a direction along the wavelength direction of the corrugated part,
The panel member is sandwiched between an upper panel and a lower panel that are disposed to face each other in the wave height direction in the corrugated plate portion, and the upper panel and the lower panel are respectively joined to the panel member and the panel member. Each of which forms a closed cross section ,
The bent portion is formed in a curved shape and set to the same thickness as the second wall portion,
A laminated structure in which a gradually changing portion whose thickness is gradually increased as the distance from the bent portion is increased is formed at an end of the first wall portion on the bent portion side . A first wall portion that forms the undulations of the corrugated plate portion formed of a fiber reinforced resin material, and upper and lower end portions in the wave height direction of the corrugated plate portion are configured and connected to the first wall portion via a bent portion. A second wall portion, and a panel member provided with
The second wall portion includes a general portion extending in the wavelength direction of the corrugated plate portion,
The orientation direction of the reinforcing fibers arranged in the general part is set in a direction along the wavelength direction of the corrugated part,
The panel member is sandwiched between an upper panel and a lower panel that are disposed to face each other in the wave height direction in the corrugated plate portion, and the upper panel and the lower panel are respectively joined to the panel member and the panel member. Each of which forms a closed cross section ,
A laminated structure in which an extending portion extends from the bent portion to the side opposite to the first wall portion, and the extending portion is formed integrally with the bent portion . A first wall portion that forms the undulations of the corrugated plate portion formed of a fiber reinforced resin material, and upper and lower end portions in the wave height direction of the corrugated plate portion are configured and connected to the first wall portion via a bent portion. A second wall portion, and a panel member provided with
The second wall portion includes a general portion extending in the wavelength direction of the corrugated plate portion,
The orientation direction of the reinforcing fibers arranged in the general part is set in a direction along the wavelength direction of the corrugated part,
The panel member is sandwiched between an upper panel and a lower panel that are disposed to face each other in the wave height direction in the corrugated plate portion, and the upper panel and the lower panel are respectively joined to the panel member and the panel member. Each of which forms a closed cross section ,
The said general part is a laminated structure whose density is higher than said 1st wall part . The laminated structure according to any one of claims 1 to 4, wherein the general part does not contain at least bubbles larger in diameter than the reinforcing fibers.

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