PANEL WITH INTEGRATED HONEYCOMB STRUCTURE

Abstract

Plate (11, 21, 31) with integrated honeycomb structure, comprising: a honeycomb element (12) enclosing a plurality of honeycomb cells (13) arranged side by side in a horizontal direction; and two mesh elements (14, 15) arranged on the two side sections of the honeycomb element (12) lying in a direction perpendicular to the horizontal direction, wherein the two mesh elements (14, 15) are connected to the honeycomb element (12), wherein the honeycomb element (12) is made of a material with a moisture absorption capacity, each honeycomb cell (13) extends in the vertical direction and is formed such that it opens on both side sections of the honeycomb element (12), and a through-hole (16, 22, 32) is formed such that it continuously penetrates the honeycomb element (12) and the two mesh elements (14, 15), characterized in that a through-hole-forming section (12c, 12e, 12g) of the honeycomb element (12), which includes a circumferential section (16a, 22a,32a) of the through-hole (16, 22, 32) forms, and the two mesh elements (14, 15) are coated with an identical resin material, and the through-hole-forming section (12c, 12e, 12g) of the honeycomb element (12) comprises a conical section formed as a conical shape with a cross-section that decreases in the vertical direction from one side to the other.

Description

[Field of technology]

[0001] The present invention relates to a panel with an integrated honeycomb structure, comprising a honeycomb element with a plurality of honeycomb cells, and to a method for manufacturing the panel. The present invention relates to a rear floor structure of a vehicle, comprising the panel with the integrated honeycomb structure. [State of the art]

[0002] A panel with an integrated honeycomb structure, comprising a honeycomb element with a plurality of honeycomb cells (hereinafter referred to simply as a "panel"), is used in various industrial fields, such as the automotive industry. In particular, there is one instance where the panel is used as a component, such as a car hood.

[0003] An example of the panel comprises a sandwich element with a honeycomb core. This sandwich element comprises a paper honeycomb core and two outer layers, each consisting of a fiber element impregnated, sprayed and / or wetted with a resin material or the like, and these two outer layers are each glued to an upper end section and a lower end section of the honeycomb core (see, for example, patent literature 1). [List of quotations][Patent literature]

[0004] [Patent Literature 1] JP 2016-144934 A [Summary of the invention][Technical problem]

[0005] The panel with integrated honeycomb structure described above may need to include a through-hole, depending on its location. For example, in the case of a vehicle's rear floor, such as an automobile, improved torsional rigidity and prevention of weight gain are required. When the panel is attached to this rear floor, a through-hole must be incorporated to allow wiring harnesses and / or other components for various electrical parts located around the rear floor to pass through.

[0006] With this type of panel, the honeycomb element is exposed to the outside of the panel due to the through-hole. Therefore, a paper honeycomb element can absorb water flowing from outside the panel into the through-hole, potentially reducing the stiffness of the element and consequently the overall stiffness of the panel. To prevent this loss of stiffness, the exposed honeycomb element must undergo an additional impregnation treatment. However, this impregnation treatment reduces the manufacturing efficiency of the panel. Therefore, it is difficult to install the panel described above on the rear floor of a vehicle.

[0007] In light of these circumstances, it is desirable for the panel with integrated honeycomb structure and the manufacturing process to prevent a decrease in the panel's manufacturing efficiency due to the formation of through-holes, and it is desirable to prevent a decrease in the panel's stiffness due to the formation of through-holes. Furthermore, in the case of a vehicle's rear floor structure, it is desirable to prevent an increase in vehicle weight through the use of the panel with integrated honeycomb structure, and it is desirable to increase the stiffness of the rear floor through its use. [Technical solution]

[0008] To solve the problem, a plate with an integrated honeycomb structure, according to one aspect, is a plate with an integrated honeycomb structure comprising the following: a honeycomb element that includes a plurality of honeycomb cells arranged side by side in a horizontal direction;and two mesh elements arranged on the two side sections of the honeycomb element which are perpendicular to the horizontal direction, the two mesh elements being connected to the honeycomb element, the honeycomb element being made of a material with moisture absorption capacity, each honeycomb cell extending in the vertical direction and being formed to open on both side sections of the honeycomb element, a through-hole being formed to continuously penetrate the honeycomb element and the two mesh elements, and a through-hole-forming section of the honeycomb element forming a circumferential section of the through-hole, and the two mesh elements being coated with an identical resin material.

[0009] A rear floor structure of a vehicle according to one aspect is a rear floor structure for a vehicle, wherein the rear floor structure comprises the panel with integrated honeycomb structure according to the above one aspect, wherein a forward area in the longitudinal direction of the vehicle of a rear floor of the vehicle comprises a flat section formed into a flat shape along a horizontal direction of the vehicle, and the panel with integrated honeycomb structure is arranged on the flat section such that a horizontal direction of the panel with integrated honeycomb structure runs along the horizontal direction of the vehicle.

[0010] A method for manufacturing a panel with an integrated honeycomb structure is, according to one aspect, a method for manufacturing the panel with an integrated honeycomb structure, wherein the panel with an integrated honeycomb structure comprises: a honeycomb element comprising a plurality of honeycomb cells arranged side by side in a horizontal direction, the honeycomb element being made of a moisture-absorbing material; and two mesh elements connected to the honeycomb element, each honeycomb cell extending in a direction perpendicular to the horizontal direction, each honeycomb cell being shaped such that it opens on both side sections of the honeycomb element, the method comprising the following steps: arranging the two mesh elements on the two side sections of the honeycomb element lying in a direction perpendicular to the horizontal direction;Forming a through-hole such that it continuously penetrates the honeycomb element and the two mesh elements; and coating a through-hole-forming section of the honeycomb element and the two mesh elements with an identical resin material, wherein the through-hole-forming section forms a circumferential section of the through-hole. [Advantageous effects of the invention]

[0011] In the case of the panel with integrated honeycomb structure, and in the method for manufacturing it, a decrease in the manufacturing efficiency of the panel due to the formation of the through-hole can be prevented, and a decrease in the stiffness of the panel due to the formation of the through-hole can be prevented. Furthermore, in the rear floor structure of a vehicle, an increase in vehicle weight can be prevented by using the panel with integrated honeycomb structure, and the stiffness of the rear floor can be improved by using the panel with integrated honeycomb structure. List of characters [ Fig. 1] Fig. Figure 1 is a perspective view in which a vehicle body is schematically illustrated, comprising a rear floor structure of a vehicle according to the first embodiment. [ Fig. 2] Fig. Figure 2 is a perspective view in which a plate according to the first embodiment is schematically illustrated. [ Fig. 3] Fig. Figure 3 is a perspective exploded view in which a part of the plate with integrated honeycomb structure according to the first embodiment, in which a through hole is not formed, is schematically illustrated in a disassembled state of the plate. [ Fig. 4] Fig. Figure 4 is a top view showing the through hole in the plate according to the first embodiment and a part surrounding the through hole schematically illustrated. [ Fig. 5] Fig. 5 is a sectional view which schematically illustrates the plate according to the first embodiment, along the line A-A in Fig. 4. [ Fig. 6] Fig. 6 is a sectional view which schematically illustrates a plate according to the second embodiment, along one of the lines A-A in Fig. 4 corresponding section line. [ Fig. 7] Fig. 7 is a sectional view which schematically illustrates a plate according to the third embodiment, along one of the lines A-A in Fig. 4 corresponding section line. [Description of the embodiments]

[0012] A panel with an integrated honeycomb structure and a method for manufacturing it according to the first to third embodiments, and a rear floor structure of a vehicle comprising the panel with the integrated honeycomb structure, are described. In the first to third embodiments, the panel with the integrated honeycomb structure (hereinafter referred to simply as the "panel") is attached to a rear floor structure of a vehicle, for example, an automobile or the like. However, the panel can be attached to structures other than the rear floor structure of a vehicle. For example, the panel can be attached to a roof, a dashboard, a central floor of a vehicle, or the like. As a specific example, if the panel is attached to the roof of a vehicle, it can be attached to a roof panel of the vehicle. Fig. 1 points to the front of the vehicle with an arrow F. First embodiment

[0013] A plate and a method for manufacturing it according to the first embodiment and a rear floor structure of a vehicle comprising the plate are described. Regarding the rear floor structure of a vehicle

[0014] First, the rear floor structure of a vehicle according to the present embodiment is described. As in Fig. As illustrated in Figure 1, the rear soil structure corresponds to the structure of a rear soil. 1 , which is a floor surface in an area of ​​a vehicle cabin C on a side facing the rear of the vehicle. A front area in the longitudinal direction of the vehicle. 1a of the rear floor 1 includes a flat section 2, which is essentially flat along a horizontal direction of the vehicle (hereinafter referred to as the "horizontal vehicle direction"). Along the flat section 2 is a record 11 arranged according to the present embodiment. The flat section 2 can extend across essentially the entire vehicle cabin in the transverse direction C extend. In addition, a rear area in the longitudinal direction of the vehicle can 1b of the rear floor 1 form a floor surface of a luggage compartment.

[0015] Although not specifically shown, a rear seat is visible on the flat section of the rear floor structure of the vehicle, viewed from the top of the vehicle. 2 The rear seat can be arranged so that it covers the entire flat section in the transverse direction of the vehicle. 2 occupies the record 11is located in the vehicle's vertical direction between the rear seat and the front area 1a of the rear floor 1 Furthermore, various electrical components are positioned above and below the rear floor. 1 The vehicle's electrical components are arranged in various configurations. Cables, such as wiring harnesses, extend from these electrical components. Regarding the record

[0016] Next, with reference to the Fig. 1 to Fig. 5 the plate according to the present embodiment described. As in the Fig. 1 and Fig. As illustrated in point 2, the plate 11 on the flat section 2 of the front area 1a of the rear floor 1 arranged such that a horizontal direction of the plate (hereinafter referred to as the "horizontal plate direction") extends essentially along the horizontal direction of travel. The plate 11is formed as an essentially flat plate shape extending along the horizontal plate direction. However, the plate may be shaped such that it curves at least partially in a direction that is essentially perpendicular to the horizontal plate direction (hereafter referred to as the "perpendicular plate direction"). The plate 11 can be arranged in such a way that it essentially covers the flat section in the horizontal direction of the vehicle. 2 occupies.

[0017] As in the Fig. 3 to Fig. As shown in section 5, the plate includes 11 a honeycomb element 12 The honeycomb element 12 comprises a plurality of honeycomb cells arranged in the horizontal plate direction 13 The honeycomb element 12It consists of a material with moisture absorption capacity. This moisture-absorbing material may exhibit a property of reduced strength due to moisture absorption. Specifically, the moisture-absorbing material may be a porous material. Furthermore, the moisture-absorbing material may be a porous, soft material. For example, the moisture-absorbing material could be paper and / or similar materials.

[0018] Each honeycomb cell 13 extends in the vertical plate direction and is formed in such a way that it lies in the vertical plate direction of the honeycomb element 12 on both side sections 12a , 12bopens. If necessary, the two side sections of the honeycomb element are then referred to as one side and the other side of the honeycomb element in the vertical direction of the plate. One side and the other side are located on one side and the other side of the honeycomb element in the vertical direction of the plate (each indicated by an arrow). P1 and an arrow P2 (illustrated).

[0019] Each honeycomb cell 13 includes an inner cell space 13a , which is the honeycomb element 12 penetrates in the vertical direction of the plate. The inner cell space 13a includes two cell openings 13b , 13c , which are located in the vertical plate direction of the inner cell space 13a Each cell opens at both ends. However, the inner cell space can be subdivided in such a way that it defines two or more spaces in at least one of the honeycomb cells in the vertical direction of the plate.

[0020] The cross-sections of the inner cell spaces 13a in all honeycomb cells 13 They are formed in such a way that they have the same shape and size. However, in some of the honeycomb cells, the cross-sections of the inner cell spaces may be formed in such a way that they have a shape and / or size that differs from those of the cross-sections of other honeycomb cells.

[0021] In the Fig. 3 and Fig. 4 are the cross-sections of the inner cell spaces 13a the honeycomb cells 13The honeycomb cells are formed in an essentially hexagonal shape. However, the cross-sections of the honeycomb cells can have any essentially polygonal shape. For example, the cross-sections of the inner cell spaces of the honeycomb cells can be formed in an essentially triangular shape, an essentially square shape, or the like. In particular, the majority of the honeycomb cells can be arranged such that one side of the cross-section of each honeycomb cell is in contact with the other side of the cross-section of an adjacent honeycomb cell.

[0022] As in the Fig. 3 to Fig. As shown in section 5, the plate includes 11 two more mesh elements 14 , 15 with a mesh structure. Each of the mesh elements 14 , 15 consists of a fibrous material. The two mesh elements 14 , 15 They consist of the same fiber material. The two mesh elements 14, 15 However, they can consist of different fiber materials. For example, the fiber material can be: natural fibers, chemical fibers, or the like; or the fiber material can be: organic fibers such as natural fibers, synthetic fibers, or the like; inorganic fibers such as carbon fibers, metal fibers, or the like; or the like. Furthermore, the fiber material can be, for example: glass fibers; carbon fibers; cellulose nanofibers; Kevlar; polyester fibers; or a combination of two or more of these. Each of these mesh elements 14 , 15 It consists of a textile material such as woven fabric, nonwoven fabric, or the like, composed of one or more types of fiber material. It should be noted that at least one of the two mesh elements can be formed by laying down a plurality of fragments consisting of the one or more fiber material types.

[0023] The two mesh elements 14 , 15 are applied to both side sections lying in the vertical direction of the plate. 12a , 12b of the honeycomb element 12 arranged. Each of the mesh elements 14 , 15 It can be formed into a substantially planar shape, a substantially film-like shape, or a substantially flat plate shape. Accordingly, the two mesh elements are referred to as the mesh element of one side and the mesh element of the other side, as needed. The mesh element of one side and the mesh element of the other side are located on one side and the other side, respectively, in the perpendicular plate direction of the honeycomb element. The two mesh elements 14 , 15 are with the honeycomb element 12 connected. Connecting the honeycomb element 12 with each of the mesh elements 14 , 15 will be described in detail below.

[0024] As in the Fig. 4 and Fig. As illustrated in section 5, the plate shows 11 a through hole 16 on, which is the honeycomb element 12 and the two mesh elements 14 , 15 continuously penetrates the through-hole. 16 It can extend in the vertical direction of the plate. The honeycomb element 12 and the mesh elements 14 , 15 Both sides have through-hole-forming sections. 12c , 14a , 15a on, which includes a section 16a of the through hole 16 define. In Fig. 4 is the cross-section of the through hole 16 For example, it may be shaped into an essentially circular form. However, the cross-section of the through-hole is not limited to this and can be shaped into any form other than an essentially circular one.

[0025] Although not specifically shown, the rear floor structure of a vehicle described above contains cables such as wiring harnesses for electrical components that relate to the rear floor. 1 are located on the top and / or bottom of the vehicle, through the through hole 16 the record 11 If the plate is used for a vehicle roof panel, a cable for a roof antenna, located on an upper part of the vehicle relative to the plate, can be routed through the through-hole in the plate.

[0026] As in Fig. As illustrated in section 5, the scope section can be 16a of the through hole 16 They extend essentially linearly along its direction of penetration. In this case, the sections forming the through-hole extend 12c , 14a , 15a of the honeycomb element 12and the mesh elements 14 , 15 on one side and the other side also essentially linearly along the direction of penetration of the through hole. 16 , so that they belong to the perimeter section 16a of the through hole 16 correspond. In addition, the honeycomb element includes 12 the inner cell spaces 13a , and therefore the through-hole recesses 12d , which extend in the horizontal plate direction from the section forming the through-hole 12c are reset in the honeycomb element 12 educated.

[0027] As in Fig. The section shown in section 5 is the through-hole forming section. 12c of the honeycomb element 12 and the two mesh elements 14 , 15 with an identical resin material R coated. The through-hole recesses 12d of the honeycomb element 12 can also be used with the identical resin materialR be coated. It should be noted that the Fig. 3 and Fig. 4 the plate 11 show in a state in which the resin material R omitted. The resin material R is on a surface of the through-hole-forming section 12c of the honeycomb element 12 applied in the form of a layer. The resin material R can also be applied to a surface of the through-hole recesses 12d of the honeycomb element 12 be applied in the form of a layer. The two mesh elements 14 , 15 are used with the resin material R impregnated, and it is applied in the form of a layer on the surfaces of the two mesh elements. 14 , 15 appropriate.

[0028] The resin material R is hydrophobic or water-repellent. Furthermore, the resin material can R to act in such a way that it is the honeycomb element 12with the respective mesh elements 14 , 15 It bonds (adhesion effect). Furthermore, the resin material can R exhibit thermosetting properties. The resin material R With its thermosetting properties, it is flowable before heat is applied at a temperature equal to or higher than the curing temperature of the resin material. R is, and it hardens in such a way that after exposure to heat at a temperature equal to or higher than the curing temperature of the resin material, it R It exhibits adhesive properties. Examples of the resin material R with thermosetting properties include polyurethane, a phenolic resin, an epoxy resin, a melamine resin, a urea resin, an unsaturated polyester resin, an alkyd resin, a thermosetting polyimide and the like.

[0029] If the resin material Rif it has thermosetting properties, the honeycomb element can 12 through the resin material R , that from the inside of the two mesh elements 14 , 15 in the direction of the honeycomb element 12 flows, with the two mesh elements 14 , 15 be connected. Regarding the process for manufacturing the plate

[0030] A method for manufacturing the plate according to the present embodiment is described. First, the mesh elements are 14 , 15 one side and the other side, each along the sections 12a , 12b one side and the other side of the honeycomb element 12 placed (mesh element placement step). The through hole 16 is formed in such a way that it is the honeycomb element 12 and the mesh elements 14 , 15continuously penetrates one side and the other side (through-hole forming step). The through-hole forming section 12c of the honeycomb element 12 and the mesh elements 14 , 15 One side and the other side are made with the same resin material R coated (resin coating step). The through-hole recesses can also be coated during the resin coating step. 12d of the honeycomb element 12 with the same resin material R be coated.

[0031] In the case where the resin material R The mesh elements have a thermosetting property. 14 , 15 one side and the other side are each pressed in the vertical plate direction until the honeycomb element is hot-pressed. 12 between the mesh elements 14 , 15The material is sandwiched between two sides (forming and bonding step). During this process, heat is applied at a temperature equal to or higher than the curing temperature of the resin material. R is, on the resin material R left to take effect. In the shaping and joining step described above, the resin material is R hardened and connects the honeycomb element 12 with the mesh elements 14 , 15 , and therefore the record 11 shaped as desired.

[0032] The process for manufacturing the plate 11 will be described in more detail later. In the resin coating step, the resin material R on a surface of the through-hole-forming section 12c of the honeycomb element 12 and the surfaces of the two mesh elements 14 , 15 applied in a state where the temperature of the resin materialR below the curing temperature of the resin material R is held and the resin material R exhibits flowability. The resin material can... R furthermore, on the surface of the through-hole recesses 12d of the honeycomb element 12 be applied. In particular, the resin material R in the vertical plate direction from one side and the other side onto the mesh elements 14 , 15 applied to one side and the other side. Such an application can be achieved by using the resin material R The resin material is sprayed. However, the application of the resin material can also be done by letting it flow in droplet form or in a linear form.

[0033] In the forming and joining step, two forming tools are used, which are positioned vertically on one side and the other side of the plate, respectively. 11These two forming tools are located there. 11 in the vertical direction of the plate from one side and the other side. It should be noted that during hot pressing the resin material R on the through-hole-forming section 12c , 14a , 15a of the honeycomb element 12 and the mesh elements 14 , 15 one side and the other side are also hardened by the application of heat.

[0034] At the record 11 and the method for manufacturing it according to the present embodiment, the through-hole-forming section 12c of the honeycomb element 12 , which consists of the material with a moisture absorption capacity, with the resin material R coated, which means that even when the through-hole forming section 12c with water outside the plate 11When it comes into contact, water is absorbed through the through-hole-forming section. 12c This is prevented. Consequently, a decrease in the stiffness of the honeycomb element can occur. 12 This can be prevented, and furthermore, a decrease in the stiffness of the plate can occur. 11 This can be prevented. The through-hole-forming section 12c of the honeycomb element 12 and the two mesh elements 14 , 15 are made with the same resin material R coated, and therefore the production of two different resin materials is not necessary. Furthermore, the through-hole forming section 12c and the two mesh elements 14 , 15 in the same resin coating step together with the same resin material R are coated, and therefore a decrease in the manufacturing efficiency of the plate can occur. 11This should be avoided. In particular, the process for manufacturing the plate should be avoided. 11 according to the present embodiment, the through hole 16 in the honeycomb element 12 and the two mesh elements 14 , 15 formed in the through-hole forming step, and then the through-hole forming section 12c of the honeycomb element 12 and the two mesh elements 14 , 15 in the same resin coating step together with the same resin material R coated, and therefore a decrease in the manufacturing efficiency of the plate will occur. 11 effectively avoided. Accordingly, the plate 11 and in the method for manufacturing it according to the present embodiment, a decrease in the manufacturing efficiency of the plate 11 due to the formation of the through-hole 16 to prevent a decrease in the stiffness of the plate 11due to the through-hole 16 can be prevented.

[0035] In the rear floor structure of a vehicle according to the present embodiment, the front area has 1a of the rear floor 1 of the vehicle a flat section 2 on, which is formed into a flat shape along the horizontal direction of the vehicle, and the plate 11 According to the present embodiment, this is done on the flat section 2 The horizontal direction of the plate is arranged so that it extends essentially along the horizontal direction of the vehicle. Here, the rear floor typically often needs to be provided with a through-hole for cables such as wiring harnesses or similar electrical components. In contrast, the plate 11According to the present embodiment, the advantageous effects described above are achieved even when the through-hole 16 is intended. Furthermore, the plate 11 It is lightweight and has high vibration-damping properties. Therefore, it can be used in the rear floor structure of a vehicle, where the plate 11 on the rear floor 1 When attached and the through-hole is positioned, it improves the rigidity of the rear floor. 1 This can be achieved while preventing an increase in vehicle weight. Additionally, the plate can 11 Vibrations in the front area 1a of the rear floor 1 reduce. Second embodiment

[0036] A plate with an integrated honeycomb structure and a method for manufacturing it, as well as a rear floor structure of a vehicle according to the second embodiment, are described. Apart from features relating to the shape of the through-hole described below, the plate according to the present embodiment is designed in the same way as the plate according to the first embodiment. Therefore, the method for manufacturing the plate according to the present embodiment is the same as that of the first embodiment, and therefore a description of the method for manufacturing the plate according to the present embodiment is omitted.Furthermore, the rear floor structure of a vehicle according to the present embodiment, with the exception of a plate according to the present embodiment which is included in the rear floor structure of a vehicle according to the present embodiment, is designed in the same way as the rear floor structure of a vehicle according to the first embodiment, and therefore a description of the rear floor structure of a vehicle according to the present embodiment is omitted. Regarding the record

[0037] With reference to Fig. 6 will be a plate 21 as described in the present embodiment. The plate 21 In the present embodiment, the honeycomb element comprises 12 , the majority of honeycomb cells 13 of the honeycomb element 12 and the mesh elements 14 , 15one side and the other side, which are designed in the same way as in the first embodiment. A circumferential section 22a of the record 21 formed through hole 22 However, it differs from the perimeter section. 16a of the through hole 16 , which is in the record 11 formed according to the first embodiment, with the exception of the circumferential section. 22a is the through hole 22 according to the present embodiment in the same way as the through hole 16 designed according to the first embodiment. Therefore, the honeycomb element 12 and the mesh elements 14 , 15 one side and the other side each have sections forming through-holes. 12e , 14b , 15b provided, each of which is separated from the through-hole-forming sections. 12c , 14a , 15adiffer from the first embodiment. The honeycomb element 12 includes the inner cell spaces 13a , and therefore the through-hole recesses 12f , which extend in the horizontal plate direction from the section forming the through-hole 12e are reset in the honeycomb element 12 formed. The resin material R can be applied to a surface of the through-hole recesses 12f of the honeycomb element 12 be applied in the form of a layer.

[0038] The through-hole forming section 12e of the honeycomb element 12 It comprises a conical section formed as a conical shape with a cross-section that decreases from one side to the other in the perpendicular direction of the plate. In particular, the entire portion of the through-hole-forming section can be 12e of the honeycomb element 12It should be formed as a conical shape with a cross-section that decreases in the vertical plate direction from one side to the other.

[0039] Furthermore, the entire part of the scope section can 22a of the through hole 22 It should be formed as a conical shape with a cross-section that decreases in the vertical direction of the plate from one side to the other. In this case, through-hole-forming sections are used. 14b , 15b the mesh elements 14 , 15 on one side and the other side also formed with a conical shape, which has a cross-section that decreases in the vertical plate direction from one side to the other, so that it corresponds to the circumferential section 22a of the through hole 22 corresponds.

[0040] As described above, the plate can be used 21According to the present embodiment, advantageous effects are achieved in the same way as with the plate. 11 as achieved according to the first embodiment. If the plate 21 according to the present embodiment, the resin material R continuing in the vertical direction from one side to the other side of the through hole 22 is supplied, particularly in a state in which one side and the other side are in the perpendicular direction of the plate 21 The resin material flows upwards or downwards. R the conical section of the through-hole forming section 12e of the honeycomb element 12 along, and therefore the through-hole-forming section 12e of the honeycomb element 12 with the resin material R be effectively coated. Third embodiment

[0041] A plate with an integrated honeycomb structure and a method for manufacturing it, as well as a rear floor structure of a vehicle according to the third embodiment, are described. Apart from features relating to the shape of the through-hole described below, the plate according to the present embodiment is designed in the same way as the plate according to the first embodiment. Therefore, the method for manufacturing the plate according to the present embodiment is the same as that of the first embodiment, and therefore a description of the method for manufacturing the plate according to the present embodiment is omitted.Furthermore, the rear floor structure of a vehicle according to the present embodiment, with the exception of a plate according to the present embodiment which is included in the rear floor structure of a vehicle according to the present embodiment, is designed in the same way as the rear floor structure of a vehicle according to the first embodiment, and therefore a description of the rear floor structure of a vehicle according to the present embodiment is omitted. Regarding the record

[0042] With reference to Fig. 7 will be a record 31 as described in the present embodiment. The plate 31 According to the present embodiment, the honeycomb element comprises 12 , the majority of honeycomb cells 13 of the honeycomb element 12 and the mesh elements 14 , 15one side and the other side, which are designed in the same way as in the first embodiment. A circumferential section 32a of the record 31 formed through hole 32 However, it differs from the perimeter section. 16a of the through hole 16 , which is in the record 11 formed according to the first embodiment, with the exception of the circumferential section. 32a is a through hole 32 according to the present embodiment in the same way as the through hole 16 designed according to the first embodiment. Therefore, the honeycomb element 12 and the mesh elements 14 , 15 one side and the other side each have sections forming through-holes. 12g , 14c , 15c provided, each of which is separated from the through-hole-forming sections. 12c , 14a , 15adiffer from the first embodiment. The honeycomb element 12 includes the inner cell spaces 13a , and therefore the through-hole recesses 12h , which extend in the horizontal plate direction from the section forming the through-hole 12g are reset in the honeycomb element 12 formed. The resin material R can be applied to a surface of the through-hole recesses 12h of the honeycomb element 12 be applied in the form of a layer.

[0043] The through-hole forming section 14c of the mesh element 14 one side is shaped in such a way that it forms an end in the vertical plate direction of the through-hole-forming section. 12g of the honeycomb element 12 corresponds to the through-hole-forming section. 15c of the mesh element 15the other side is shaped in such a way that it extends from the other end in the vertical plate direction of the through-hole-forming section. 12g of the honeycomb element 12 in the horizontal plate direction towards the center of the through hole 32 juts out.

[0044] Furthermore, the through-hole forming section includes 12g of the honeycomb element 12 According to the present embodiment, a conical section formed into a conical shape with a cross-section that is formed in the same way as the through-hole forming section. 12e of the honeycomb element 12 According to the second embodiment, the thickness decreases in the vertical plate direction from one side to the other. In particular, the entire portion of the through-hole-forming section can be used. 12g of the honeycomb element 12It comprises a conical section formed into a conical shape with a cross-section that decreases from one side to the other in the perpendicular direction of the plate. The through-hole-forming section 15c of the mesh element 15 One side may also include a conical section, which is formed as a conical shape with a cross-section that decreases in the perpendicular plate direction from one side to the other.

[0045] The through-hole-forming section of the honeycomb element need not have a conical shape. For example, the through-hole-forming section of the honeycomb element can extend essentially linearly along the perpendicular direction of the plate. The through-hole-forming section of the mesh element on one side does not need to be conical. For example, the through-hole-forming section of the mesh element on one side can extend essentially linearly along the perpendicular direction of the plate.

[0046] As described above, the plate can be used 31 According to the present embodiment, advantageous effects are achieved in the same way as with the plate. 11 as described in the first embodiment, and advantageous effects can be achieved in the same way as with the plate. 21 This can be achieved selectively according to the second embodiment. Furthermore, the plate can be used in conjunction with...31 according to the present embodiment, when a component is attached to the plate 31 The component is mounted on the through-hole-forming section. 15c of the mesh element 15 it can be mounted on the other side without a bracket being provided for mounting the component. For example, in the case where the plate 31 a roof antenna is attached to the plate of a vehicle roof. 31 can be mounted without a bracket being provided for it.

[0047] Although the embodiments of the present invention have been described above, it is not limited thereto and can be altered or modified based on the technical concept. Reference symbol list 1 Rear floor 1a Front area 2 Flat section 11, 21, 31 Panel with integrated honeycomb structure (panel) 12 honeycomb elements Section 12a of one side Section 12b of the other side 12c, 12e, 12g Through-hole forming section 13 honeycomb cells 14 mesh elements on one side 14a, 14b, 14c Through-hole forming section 15 mesh elements on the other side 15a, 15b, 15c Through-hole forming section 16, 22, 32 Through hole Sections 16a, 22a, 32a Scope section R resin material QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] JP 2016144934 A

[0004]

Claims

[1] Panel with integrated honeycomb structure, comprising: a honeycomb element that includes a plurality of honeycomb cells arranged side by side in a horizontal direction; and two mesh elements arranged on the two side sections of the honeycomb element that lie in one direction perpendicular to the horizontal direction, wherein the two mesh elements are connected to the honeycomb element, wherein the honeycomb element consists of a material with moisture absorption capacity, Each honeycomb cell extends in the vertical direction and is formed in such a way that it opens on both side sections of the honeycomb element, a through-hole is formed in such a way that it continuously penetrates the honeycomb element and the two mesh elements, and a through-hole forming section of the honeycomb element, which forms a circumferential section of the through-hole, and the two mesh elements are coated with an identical resin material. [2] Plate with integrated honeycomb structure according to claim 1, wherein The through-hole forming section of the honeycomb element includes a conical section formed as a conical shape with a cross-section that decreases in the vertical direction from one side to the other. [3] Plate with integrated honeycomb structure according to claim 1 or 2, wherein one of the through-hole forming sections in the two mesh elements that form the circumferential section of the through-hole is formed such that it corresponds in the vertical direction to an end of the through-hole forming section of the honeycomb element, and the other of the through-hole forming sections in the two mesh elements is formed in such a way that it projects at the other end in a horizontal direction towards the center of the through-hole in the vertical direction of the through-hole forming section of the honeycomb element. [4] Rear floor structure of a vehicle comprising the plate with integrated honeycomb structure according to any one of claims 1 to 3, wherein a front area of ​​the rear floor of the vehicle, in the longitudinal direction of the vehicle, comprising a flat section that is formed into a flat shape along a horizontal direction of the vehicle, and The plate with integrated honeycomb structure is arranged on the flat section in such a way that a horizontal direction of the plate with integrated honeycomb structure runs along the horizontal direction of the vehicle. [5] A method for producing a panel with an integrated honeycomb structure, the panel with an integrated honeycomb structure comprising: a honeycomb element with a plurality of honeycomb cells arranged side by side in a horizontal direction, the honeycomb element being made of a moisture-absorbing material; and two mesh elements connected to the honeycomb element, each honeycomb cell extending in a perpendicular direction to the horizontal direction, each honeycomb cell being shaped to open on both side sections of the honeycomb element, the method comprising the following steps: Arrange the two mesh elements on the two side sections of the honeycomb element that lie in a direction perpendicular to the horizontal direction; Forming a through-hole such that it continuously penetrates the honeycomb element and the two mesh elements; and Coating a through-hole forming section of the honeycomb element and the two mesh elements with an identical resin material, wherein the through-hole forming section forms a circumferential section of the through-hole.

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