Vehicle roof

Abstract

The present invention provides a vehicle roof that suppresses cost increase and ensures rust resistance. The vehicle roof includes a mounted portion on which a hinge portion is mounted. The mounted portion includes a steel plate and a first resin layer covering the hinge portion side surface of the steel plate. The hinge portion side surface of the steel plate of the mounted portion is covered by the first resin layer. The first resin layer is thicker than the hinge portion resin layer covering the hinge portion. According to the structure of the vehicle roof, cost increase is suppressed and rust resistance is ensured.

Description

Technical Field

[0001] The present invention relates to a vehicle roof, and in particular to a vehicle roof equipped with a hinged portion. Background Art

[0002] Japanese Patent Application Laid-Open No. 2015-202686 discloses that a resin-coated steel sheet having a surface covered with a resin layer and having rust-proof properties is used in a vehicle.

[0003] The inventors of the present application conceived the idea of ​​applying a resin-coated steel sheet to a roof, hinge portion, etc. of a vehicle, but found the following problems.

[0004] The resin-coated steel sheet is more expensive than a normal steel sheet, and therefore it is necessary to appropriately select a location in a vehicle where it is used.

[0005] In addition, in many cases, the hatchback door is mounted on the roof via a hinge so that it can be opened and closed. However, the portion of the roof where the hinge is mounted (hereinafter referred to as the mounted portion) is not easy for the nozzle (i.e., the nozzle for applying the primer) to enter, making it difficult to apply the primer. Therefore, the mounted portion may not be able to ensure rust resistance. Summary of the invention

[0006] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to realize a vehicle roof which suppresses cost increase and ensures rust resistance.

[0007] A vehicle roof according to one embodiment of the present invention is a vehicle roof comprising a mounted portion on which a hinge portion is mounted, wherein the mounted portion comprises a steel plate and a first resin layer covering the hinge portion side surface of the steel plate, wherein the first resin layer is thicker than the hinge portion resin layer covering the hinge portion.

[0008] According to this structure, the hinge side surface of the steel plate of the mounted portion is covered with the first resin layer which is thicker than the hinge resin layer. Therefore, the mounted portion of the vehicle roof can ensure good rust resistance. Moreover, the hinge resin layer is thinner than the first resin layer, so the total amount of resin layer used can be reduced and the cost increase can be suppressed.

[0009] A vehicle roof according to one embodiment of the present invention is a vehicle roof having a mounted portion on which a hinge is mounted, wherein the mounted portion has a steel plate and a first resin layer covering the hinge side surface of the steel plate, and the hinge is not covered by the resin layer.

[0010] According to this structure, the hinge side surface of the steel plate of the mounted portion is covered with the first resin layer which is thicker than the hinge resin layer. Therefore, the mounted portion of the vehicle roof can ensure good rust resistance. In addition, the hinge is not covered with the resin layer, so the total amount of resin layer used can be reduced.

[0011] Furthermore, the vehicle roof may further include a central portion provided on a central side of the vehicle roof relative to the mounted portion and a second resin layer covering the central portion, wherein the first resin layer is thicker than the second resin layer.

[0012] According to such a configuration, since the first resin layer is thicker than the second resin layer covering the central portion, it is possible to ensure rust resistance also in the central portion of the vehicle roof and suppress an increase in cost.

[0013] Furthermore, the vehicle roof may further include a central portion provided on a central side of the vehicle roof relative to the mounted portion, and the central portion may not be covered with the resin layer.

[0014] According to such a configuration, since the central portion is not covered with the second resin layer, the total amount of resin layer used can be reduced.

[0015] Furthermore, the vehicle roof may further include a third resin layer covering the inner surface of the steel plate, and the first resin layer may be thicker than the third resin layer.

[0016] According to this structure, the third resin layer covers the inner surface of the steel plate in the vehicle interior and is thinner than the first resin layer. Therefore, the rust resistance of the inner surface of the steel plate in the vehicle interior can be ensured, and the total amount of resin layers used can be suppressed. In addition, the first resin layer is thicker than the third resin layer, so the rust resistance of the hinge side surface of the steel plate can be improved.

[0017] Furthermore, the vehicle roof may be characterized in that a vehicle interior inner side surface of the steel plate is not covered with a resin layer.

[0018] According to such a configuration, the vehicle interior inner surface of the steel plate is not covered with the resin layer, and therefore the total usage amount of the resin layer can be suppressed.

[0019] Furthermore, the vehicle roof may be characterized in that the mounted portion and the central portion are formed using a custom blank.

[0020] According to this configuration, the mounted portion and the central portion can be manufactured using a custom blank in which the thickness of the resin layer and the presence or absence of the resin layer are different.

[0021] According to the present invention, it is possible to ensure rust resistance while suppressing cost increase.

[0022] The above and other objects, features and advantages of the present disclosure can be more fully understood from the detailed description given below and the accompanying drawings, which are given by way of illustration only and thus should not be construed as limiting the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a perspective view showing a rear portion of a vehicle including an example of a vehicle roof according to the first embodiment.

[0024] Figure 2 This is a cross-sectional view showing a rear portion of a vehicle including an example of a vehicle roof according to the first embodiment.

[0025] Figure 3 This is a schematic partially cutaway cross-sectional view of an example of a vehicle roof according to the first embodiment.

[0026] Figure 4 This is a schematic partially cutaway cross-sectional view of a first modified example of the vehicle roof of the first embodiment.

[0027] Figure 5 This is a schematic partially cutaway cross-sectional view of a second modified example of the vehicle roof of the first embodiment.

[0028] Figure 6 This is a schematic partially cutaway cross-sectional view of a third modified example of the vehicle roof of the first embodiment.

[0029] Figure 7 This is a schematic partially cutaway cross-sectional view of a fourth modified example of the vehicle roof of the first embodiment. DETAILED DESCRIPTION

[0030] Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the following embodiments. Furthermore, in order to make the description clear, the following description and the accompanying drawings are appropriately simplified.

[0031] (Implementation Method 1)

[0032] Reference Figure 1 to Figure 3 And implementation mode 1 is described. Figure 1 It is a perspective view showing a rear portion of a vehicle including an example of a vehicle roof according to the first embodiment. Figure 2 Yes means including Figure 1 A cross-sectional view of the rear portion of a vehicle showing an example of a vehicle roof is shown. Figure 3 yes Figure 1 A schematic partially cut-away cross-sectional view of an example of a vehicle roof is shown.

[0033] It should be noted that Figure 1 The three-dimensional coordinates shown in the figures and other drawings are of course figures for the convenience of explaining the positional relationship of the components. Usually, in the drawings, UPR represents the top of the vehicle, FR represents the front of the vehicle, and LH represents the left side of the vehicle, which are common among the drawings. The opposite side of UPR represents the inside of the vehicle.

[0034] like Figure 1As shown, the vehicle roof 10 includes a mounted portion 1 to which a hinge portion 20 is mounted. The vehicle roof 10 can be formed by appropriately performing stamping, cutting, etc. on the resin-coated steel plate. The mounted portion 1 is also called a roof hinge portion. The hinge portion 20 is mounted on the vehicle roof 10 and the rear door 30. Specifically, the hinge portion 20 includes mounting portions 21 and 22. The mounted portion 1 of the vehicle roof 10 is mounted on the mounting portion 21. It is difficult to apply primer or wax to the front side of the contact interface between the mounted portion 1 and the mounting portion 21 for the purpose of rust prevention. The rear door inner side component 30b (described later) of the rear door 30 is mounted on the mounting portion 22.

[0035] like Figure 2 As shown, the rear door 30 is mounted on the vehicle roof 10 via the hinge 20 in a manner that it can rotate around the rear door rotation axis 20a of the hinge 20. The rear door 30 includes a rear door outer member 30a, a rear door inner member 30b, and a rear door glass 30c. The rear door 30 is opened by rotating around the rear door rotation axis 20a in a manner that the rear door glass 30c moves upward.

[0036] like Figure 3 As shown, the vehicle roof 10 includes a steel plate 1a and a first resin layer 1b. The vehicle roof 10 has the same structure at the mounted portion 1 and the central portion 2. The central portion 2 is a portion of the vehicle roof 10 that is located closer to the center of the vehicle roof than the mounted portion 1. The central portion 2 may be continuous with the mounted portion 1.

[0037] The steel plate 1a has a vehicle roof shape. The steel plate 1a has mechanical properties required as a vehicle roof 10. Specifically, the steel plate 1a can be made of ordinary steel or steel containing additive elements such as chromium. In addition, a plated film can be provided on the surface of the steel plate 1a. The type of the plated film on the surface of the steel plate 1a is not particularly limited. As applicable plated films, for example, plating containing any one of zinc, aluminum, cobalt, tin, and nickel, and alloy plating containing these metal elements, other metal elements, and non-metallic elements can be cited. In addition, both sides of the metal plate, only one side, a part of the surface, or the entire surface can also be covered with a coating depending on the application.

[0038] The first resin layer 1b covers the hinge 20 side surface of the steel plate 1a. The first resin layer 1b contains resin and has higher rust resistance than the steel plate 1a. Thus, the first resin layer 1b improves the rust resistance of the steel plate 1a. Such resins are, for example, organic resins such as water-based coating compositions and organic solvent-based coating compositions. In order to further improve the adhesion and corrosion resistance of the first resin layer 1b relative to the steel plate 1a, a base treatment film can also be provided between the first resin layer 1b and the surface of the steel plate 1a. In the case of providing the base treatment film in this way, the number of layers and composition of the base treatment film are not limited. The first resin layer 1b may also further contain a pigment. Such a pigment is, for example, a rust-proof pigment and a conductive pigment. The type of rust-proof pigment and the type of conductive pigment are not particularly limited, but the rust-proof pigment preferably includes, for example, one or more selected from silicate compounds, phosphate compounds, vanadate compounds and metal oxide microparticles. In addition, the conductive pigment preferably includes, for example, one or more selected from metals, alloys, conductive carbon, iron phosphide, carbides, and semiconductor oxides.

[0039] It should be noted that the vehicle roof 10 may also include at least one of a plating coating layer, an intermediate coating layer, and a top coating layer, and at least one of the plating coating layer, the intermediate coating layer, and the top coating layer covers at least a portion of the first resin layer 1b.

[0040] The hinge part 20 is in contact with the mounted part 1. The hinge part 20 is in contact with the steel plate 1a via the first resin layer 1b. The first resin layer 1b has a predetermined thickness t 1b (That is, the first resin layer 1b is provided between the hinge portion 20 and the steel plate 1a. The first resin layer 1b insulates the hinge portion 20 from the steel plate 1a.)

[0041] The hinge part 20 includes mounting parts 21 and 22 and a hinge part resin layer 23. The hinge part resin layer 23 covers the surface of the mounting part 21 on the side of the mounted part 1 of the vehicle roof 10. The first resin layer 1b is thicker than the hinge part resin layer 23. In other words, the thickness t of the first resin layer 1b is 1b The thickness t of the hinge resin layer 23 23 Relatively large.

[0042] In summary, according to the structure of the vehicle roof 10, the hinge 20 side surface of the steel plate 1a of the mounted portion 1 is covered with the first resin layer 1b which is thicker than the hinge resin layer 23. Therefore, the mounted portion 1 of the vehicle roof 10 can ensure good rust resistance. Moreover, the hinge resin layer 23 is thinner than the first resin layer 1b, so the total amount of resin used can be suppressed and the cost increase can be suppressed.

[0043] Furthermore, according to the structure of the vehicle roof 10, the hinge 20 side surface of the steel plate 1a of the center portion 2 is also covered with the first resin layer 1b. Therefore, the center portion 2 of the vehicle roof 10 can also ensure good rust resistance. In addition, good rust resistance can also be ensured for the portion where primer and wax are difficult to apply and the front side of the contact interface between the mounted portion 1 and the mounting portion 21.

[0044] Next, an example of a method for manufacturing the vehicle roof 10 is described. First, a coating film is applied (i.e., formed) on the hinge portion 20 side surface of the steel plate 1a, and a first resin layer 1b is formed on the hinge portion 20 side surface of the steel plate 1a. Next, the steel plate 1a on which the first resin layer 1b is formed is processed or formed into a vehicle roof shape. Through the above steps, the vehicle roof 10 can be manufactured. It is also possible to appropriately apply (i.e., form) at least one of electroplating, intermediate coating, and top coating to the processed or formed steel plate 1a.

[0045] (First Modification)

[0046] Figure 4 The vehicle roof 10a shown is Figure 3 A first modified example of a vehicle roof 10 is shown. Figure 4 yes Figure 3 A schematic partially cutaway cross-sectional view of a first modified example of a vehicle roof is shown. The vehicle roof 10a has the same structure as the vehicle roof 10 except that the hinge portion 20 is not covered with a resin layer.

[0047] The vehicle roof 10a includes a hinge portion 20. The hinge portion 20 is not covered with a resin layer. In other words, Figure 3 The thickness t of the hinge resin layer 23 is shown as 23 is 0 (zero). Figure 3 The thickness t of the hinge resin layer 23 of the vehicle roof 10 is shown as 23 When θ is 0, the vehicle roof 10 and the vehicle roof 10a have the same structure.

[0048] In summary, according to the structure of the vehicle roof 10a, the hinge 20 side surface of the steel plate 1a of the mounted portion 1 and the central portion 2 of the vehicle roof 10 is covered with the first resin layer 1b, as in the vehicle roof 10. Therefore, the mounted portion 1 and the central portion 2 of the vehicle roof 10 can ensure good rust resistance. In addition, since the hinge 20 is not covered with the resin layer, the total amount of the resin layer used can be suppressed, and cost reduction can be achieved.

[0049] (Second Modification)

[0050] Figure 5 The vehicle roof 10b shown is Figure 3 A second modified example of the vehicle roof 10 is shown. Figure 5 yes Figure 3 Schematic partially cutaway cross-sectional view of a second modified example of a vehicle roof shown in FIG. A vehicle roof 10b has the same structure as the vehicle roof 10 except that it includes a second resin layer 1c.

[0051] like Figure 5 As shown, the vehicle roof 10b has a second resin layer 1c. The second resin layer 1c covers the central portion 2. The vehicle roof 10b can also be formed using a custom blank. The custom blank is a stamping steel material obtained by welding or joining a plurality of custom blank steel plates of different material types and thicknesses. The custom blank, for example, connects a steel plate constituting the mounted portion 1 with another steel plate constituting the central portion 2. The material types and thicknesses of the above-mentioned plurality of custom blank steel plates are determined according to the locations of the stamped body. In addition, the plurality of custom blank steel plates each have a resin layer, and the resin layer and the steel plate may also have different types and thicknesses. The mounted portion 1 and the central portion 2 may also have different types and thicknesses of materials. The first resin layer 1b and the second resin layer 1c may also have different types and thicknesses of materials. The thickness of the steel plate 2a of this embodiment is the same as that of the steel plate 1a, and the second resin layer 1c is thinner than the first resin layer 1b. It should be noted that the thickness of the steel plate 2a may also be different from that of the steel plate 1a. The resin-coated steel sheet of the vehicle roof 10b can also be manufactured, for example, by welding custom blank steel sheets corresponding to the steel sheets 2a and 1a to each other to form a stamping steel material, and then stamping the stamping steel material. The vehicle outer side surface of the custom blank steel sheet corresponding to the steel sheet 2a (i.e., the surface of the custom blank steel sheet arranged on the outer side of the vehicle when the vehicle roof is mounted on the vehicle) is covered with the second resin layer 1c. The vehicle outer side surface of the custom blank steel sheet corresponding to the steel sheet 1a is covered with the first resin layer 1b.

[0052] The first resin layer 1b is thicker than the second resin layer 1c. In other words, the thickness t of the first resin layer 1b is 1b The thickness t of the second resin layer 1c 1c The second resin layer 1c has the same structure as the first resin layer 1b. The second resin layer 1c contains resin and has higher corrosion resistance than the steel plate 1a. Therefore, the second resin layer 1c improves the rust resistance of the steel plate 1a.

[0053] As described above, according to the structure of the vehicle roof 10b, the second resin layer 1c covers the central portion 2 of the vehicle roof 10b. Therefore, the central portion 2 can ensure good rust resistance. Therefore, in addition to the mounted portion 1 of the vehicle roof 10b, the central portion 2 can also ensure good rust resistance.

[0054] Furthermore, according to the structure of the vehicle roof 10b, the first resin layer 1b is thicker than the second resin layer 1c. Therefore, the total amount of resin layers used can be suppressed, and cost reduction can be achieved.

[0055] Furthermore, according to the structure of the vehicle roof 10b, the mounted portion 1 and the central portion 2 are formed using a custom blank. Thus, the vehicle roof 10b having a different thickness of the resin layer depending on the location can be easily manufactured using a custom blank steel plate in which the thickness of the resin layer and the presence or absence of the resin layer are constant regardless of the location. That is, the vehicle roof 10b having a different thickness of the resin layer depending on the location can be easily manufactured without changing the thickness of the resin layer and the presence or absence of the resin layer in the same stamping steel material.

[0056] (Third Modification)

[0057] Figure 6 The vehicle roof 10c shown is Figure 3 A third modified example of the vehicle roof 10 is shown. Figure 6 yes Figure 3 FIG. 1 is a schematic partially cutaway cross-sectional view of a third modified example of a vehicle roof shown in FIG. 1 . The vehicle roof 10c has the same structure as the vehicle roof except that the vehicle roof 10c does not have the second resin layer 1c. Figure 5 The vehicle roof 10b is shown with the same structure.

[0058] The vehicle roof 10c does not include the second resin layer 1c. The central portion 2 is not covered by the resin layer. In other words, Figure 5 The vehicle roof 10b shown has a thickness t of the second resin layer 1c. 1c When it is 0 (zero), it has the same structure as the vehicle roof 10c.

[0059] Therefore, according to the structure of the vehicle roof 10c, the center portion 2 is not covered with the resin layer. Therefore, the total amount of the resin layer used can be suppressed, and cost reduction can be achieved.

[0060] (Fourth Modification)

[0061] Figure 7 The vehicle roof 10d shown is Figure 3 A fourth modified example of the vehicle roof 10 is shown. Figure 7 yes Figure 3 FIG. 1 is a schematic partial cross-sectional view of a fourth modified example of a vehicle roof shown in FIG. 1. The vehicle roof 10d has the same Figure 3 The vehicle roof 10 shown has the same structure.

[0062] The vehicle roof 10d includes a third resin layer 1d, which covers at least a portion of the inner surface of the steel plate 1a (i.e., the surface of the steel plate 1a disposed on the vehicle interior side when the vehicle roof is mounted on the vehicle). The third resin layer 1d is thinner than the first resin layer 1b. The thickness t of the third resin layer 1d is 1d The thickness t of the first resin layer 1b 1b The third resin layer 1d contains resin like the first resin layer 1b, and has higher rust resistance than the steel plate 1a.

[0063] Therefore, according to the structure of the vehicle roof 10d, the third resin layer 1d covers the inner surface of the steel plate 1a in the vehicle interior and is thinner than the first resin layer 1b. Therefore, the rust resistance of the inner surface of the steel plate 1a in the vehicle interior can be ensured, and the total amount of resin layers used can be suppressed. In addition, the first resin layer 1b is thicker than the third resin layer 1d, so the rust resistance of the hinge 20 side surface of the steel plate 1a can be improved.

[0064] It should be noted that the present invention is not limited to the above-mentioned embodiments, and can be appropriately changed within the scope of the purpose. In addition, the present invention can also be implemented by appropriately combining the above-mentioned embodiments or one of them. For example, Figure 5 to Figure 7 The vehicle roofs 10b, 10c, 10d shown in FIG. Figure 4 The hinge part 20 is not covered by the resin layer as in the vehicle roof 10a shown. Also, the vehicle roofs 10a and 10d may include the second resin layer 1c as in the vehicle roof 10b. Also, the vehicle roofs 10a and 10d may include the central part 2 not covered by the resin layer as in the vehicle roof 10c. Also, the vehicle roofs 10, 10a, 10b, and 10c may include the third resin layer 1d as in the vehicle roof 10d.

[0065] From the above disclosure, it is obvious that the embodiments of the present disclosure can be changed in many ways. Such changes should not be regarded as departing from the spirit and scope of the present disclosure, and it is obvious to those skilled in the art that all such modifications are intended to be included in the scope of the claims.

Claims

1. A vehicle roof, comprising a mounted portion on which a hinge portion is mounted, The mounted portion includes a steel plate and a first resin layer covering the hinge portion side surface of the steel plate. The first resin layer is thicker than the hinge portion resin layer covering the surface of the hinge portion in contact with the mounted portion. The rear door is mounted on the roof of the vehicle via the hinged portion. The vehicle roof further includes a central portion provided on the central side of the vehicle roof front-rear direction relative to the mounted portion, and a second resin layer covering the central portion. The first resin layer is thicker than the second resin layer.

2. A vehicle roof, comprising a mounted portion on which a hinge portion is mounted, The mounted portion includes a steel plate and a first resin layer covering the hinge portion side surface of the steel plate. The surface of the hinge portion in contact with the mounted portion is not covered with a resin layer, The rear door is mounted on the roof of the vehicle via the hinged portion. The vehicle roof further includes a central portion provided on the central side of the vehicle roof front-rear direction relative to the mounted portion, and a second resin layer covering the central portion. The first resin layer is thicker than the second resin layer.

3. The vehicle roof according to claim 1 or 2, characterized in that: The vehicle roof further includes a third resin layer covering the inner surface of the steel plate inside the vehicle interior. The first resin layer is thicker than the third resin layer.

4. The vehicle roof according to claim 1 or 2, characterized in that: The inner surface of the vehicle interior of the steel plate is not covered with the resin layer.

5. The vehicle roof according to claim 1 or 2, characterized in that: The mounted portion and the central portion are formed using custom blanks.

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