Electronic device and housing member

Abstract

Provided are an electronic device and a case member in which a coating film is difficult to peel off and which are highly attractive. A calculator (100) is a calculator (electronic device) provided with a case (case member) (1) having a coating layer on the surface of a base material (aluminum material), the coating layer having: a first coating layer (10C) coated on the base material (aluminum material); and a second coating layer (10D) formed by coating a raw lacquer coating material (cinnabar paint) so as to overlap the first coating layer (10C). The first coating layer (10C) is formed as a layer that improves the adhesion between the substrate and the first coating layer (10C) and between the first coating layer (10C) and the second coating layer (10D), the second coating layer (10D) is formed with a thick film region in which the coating film is thick and a thin film region in which the coating film is thin, and the coating color of the first coating layer (10C) is seen through the second coating layer (10D) in the thin film region.

Description

Technical Field

[0001] This disclosure relates to electronic devices and housing components. Background Technology

[0002] Previously, an electrical product for which the outer packaging is painted for decorative purposes was disclosed (for example, see Japanese Patent Application Publication No. 2005-229080). Summary of the Invention

[0003] To address the aforementioned issues, the electronic device disclosed herein is characterized by comprising a housing member having a coating layer on the surface of a substrate, the coating layer comprising: a first coating layer applied to the substrate; and a second coating layer formed by applying a raw lacquer coating in overlap with the first coating layer.

[0004] The first coating layer is formed as a layer to improve the adhesion between the substrate and the first coating layer, and between the first coating layer and the second coating layer. The second coating layer has a thick film region with a thicker coating and a thin film region with a thinner coating, and is formed such that the coating color of the first coating layer can be seen through the second coating layer in the thin film region. Attached Figure Description

[0005] Figure 1 This is a perspective view showing the appearance of a calculator as an example of an electronic device.

[0006] Figure 2 This is a diagram showing the manufacturing process of the outer casing.

[0007] Figure 3 This diagram illustrates a method for adjusting the thin film region in the second coating layer, wherein... Figure 3 (A) is Figure 2 AA section view, Figure 3 (B) is to Figure 2 An example of a scaled-down R shape in an AA section view. Figure 3 (C) is viewed from above the top surface of the upper shell, equivalent to Figure 3 A diagram of part (A). Figure 3 (D) is the view from above the top surface of the upper shell, equivalent to Figure 3 The diagram of part (B). Detailed Implementation

[0008] Hereinafter, embodiments of the electronic device involved in this disclosure will be described with reference to the accompanying drawings. Furthermore, in this disclosure, a calculator is used as an example of one embodiment of the electronic device; however, the electronic device is not limited to a calculator and can also be applied to electronic dictionaries, tablet terminals, portable telephones, etc.

[0009] like Figure 1 As shown, the calculator 100 includes: a housing (casing component) 1, an input key group 2 with various key groups, a display 3, and a solar panel 4. The housing 1 is composed of a lower housing (not shown) for fixing a circuit board (not shown) that drives and controls the calculator 100, and an upper housing 10 that covers and seals the opening of the lower housing. The upper housing 10 is provided with openings 11 that expose the input key groups 2 respectively (see reference). Figure 2 In addition, the upper housing 10 is provided with an opening 12 that exposes the display 3 (see reference). Figure 2 ), the opening 13 that exposes the solar panel 4 (see reference) Figure 2 Furthermore, the outer casing 1 is coated with a clear varnish (described later) on its outer surface to facilitate the application of a surface layer (second coating layer 10D; see reference). Figure 2 The semi-transparent lacquer of the tea-colored series, namely vermilion lacquer (transparent lacquer), allows the underlying layer (first coating layer 10C; see reference) to be seen. Figure 2 The color of the lacquer (e.g., vermilion). The appearance of the underlying color as seen through vermilion lacquer is described below as "based on the hue of the varnish coating."

[0010] Input key group 2 is used for receiving input operations from the user, such as numerical values, calculation symbols, and other mathematical structural elements, or for receiving instructions for various processing operations. It has multiple keys (number keys, cursor keys, etc.) each assigned a specific function. Display 3, for example, is a liquid crystal display (LCD) and displays various data such as text, symbols, and signs corresponding to the operations of input key group 2 through multiple dots. Solar panel 4 has a power generation area that functions as a solar cell that generates electricity by receiving light, so that the electricity generated by the solar panel 4 is stored in a secondary battery (not shown).

[0011] Next, refer to Figure 2 The manufacturing process of the outer casing 1 will be explained. Figure 2 The illustration shows the upper shell 10 constituting the outer casing 1 as an example, but the lower shell (omitted) is also manufactured using the same manufacturing process as the upper shell 10. Here, the base material of the outer casing 1 is aluminum. Figure 2As shown, firstly, in the first step, the aluminum substrate 10A is machined to form the upper shell 10 (outer shell 1). Next, in the second step, an acid-resistant aluminum treatment is applied to the surface of the aluminum substrate 10A, specifically a colored acid-resistant aluminum treatment (colored acid-resistant aluminum treatment), thereby forming an aluminum oxide film 10B on the surface. At this time, due to the use of a black dye, the aluminum oxide film 10B becomes black. This improves the corrosion resistance / wear resistance of the upper shell 10. Furthermore, in the third step described later, when applying a polyurethane-based coating, the application of the acid-resistant aluminum treatment improves the adhesion of the polyurethane-based coating compared to the case without the acid-resistant aluminum treatment. Moreover, since the aluminum oxide film 10B is formed on the surface of the aluminum substrate 10A and the aforementioned black dye is used, the surface becomes black, thus preventing the color (silver-white) of the aluminum substrate 10A from being picked up (i.e., absorbed / covered by the black). As a result, the varnish-based color tone of the third step (primer) and the fourth step (topcoat) described later can be further highlighted.

[0012] Returning to the description of the manufacturing process of the upper housing 10 (outer shell 1), in the third step, a polyurethane-based coating (vermilion) is applied (primer) to the surface of the alumina film 10B to form a first coating layer 10C composed of this polyurethane-based coating (vermilion). The first coating layer 10C is then dried. In the third step, by applying (primer) the polyurethane-based coating (vermilion), the adhesion strength between the alumina film 10B and the first coating layer 10C, and between the first coating layer 10C and the second coating layer 10D (described later), can be improved. Next, in the fourth step, vermilion lacquer (raw lacquer coating) is applied (topcoat) to the first coating layer 10C to form a second coating layer 10D composed of this vermilion lacquer. The second coating layer 10D is then dried until cured. Thus, the upper housing 10 (outer shell 1) is completed.

[0013] Here, in the fourth step, the top surface (flat surface) of the manufactured upper shell 10 is faced upwards, while the back surface of the manufactured upper shell 10 is faced downwards (in the direction of gravity). After coating, the vermilion varnish is dried in the same orientation until cured. In this case, in the second coating layer 10D, due to the surface tension of the vermilion varnish, the vermilion varnish film gradually thins on the top surface of the upper shell 10 from the part where the upper shell 10 begins to bend (for example, the part where the R-shape of the outer edge of the upper shell 10 begins). As a result, since the vermilion varnish film is thinner at the outer edge of the upper shell 10 and at the edges of the openings 11, 12, and 13, the color (vermilion) of the polyurethane-based paint of the lower first coating layer 10C can be visually identified through the second coating layer 10D, and the hue based on the varnish coating can be highlighted.

[0014] In addition, such as Figure 3As shown, by changing the size of the R-shape of the curved portion in the outer edge of the upper housing 10 (and the edges of the openings 11, 12, and 13 respectively), the area (film area, second area) where the color (vermilion) of the polyurethane-based coating of the first coating layer 10C is visually recognizable can be adjusted. Figure 3 (A) is Figure 2 AA section view in the image. Figure 3 (B) is an example of reducing the size of the aforementioned R shape in the cross-sectional view. Figure 3 (C) Figure 3 (D) are respectively the equivalent of being viewed from above the top surface of the upper shell 10. Figure 3 (A) Figure 3 A diagram of part (B). For example... Figure 3 As shown in (A), when the size of the aforementioned R shape is reduced, the paint film gradually thins from the part where the upper shell 10 begins to bend. However, because the degree of thinning changes gradually, the proportion of the thicker areas of the paint film (the area where the polyurethane coating of the first coating layer 10C cannot be visually identified by the second coating layer 10D, the first area) increases. Therefore, when the size of the aforementioned R shape is increased, as... Figure 3 As shown in (C), when the upper housing 10 is visually identified from above the top surface of the upper housing 10, the size of the aforementioned R shape is reduced (see Figure 1). Figure 3 Compared to (D), since the proportion of the thin film area (the thinner second area of ​​the paint film compared to the first area, i.e., the second area of ​​the second coating layer 10D) in the second coating layer 10D is smaller, the area (line width) of the polyurethane coating of the first coating layer 10C that can be visually identified through the second coating layer 10D is smaller. On the other hand, as Figure 3 As shown in (B), when the size of the aforementioned R-shape is reduced, the degree of thinning of the paint film changes drastically from the point where the upper shell 10 begins to bend, thus the proportion of the thick film area decreases compared to the case where the size of the aforementioned R-shape is increased. Therefore, when the size of the aforementioned R-shape is reduced, as... Figure 3As shown in (D), when the upper housing 10 is visually perceived from above its top surface, compared to the case where the size of the aforementioned R shape is increased, the proportion of the thin film area in the second coating layer 10D becomes larger. Therefore, the area (linewidth) of the polyurethane-based coating color of the first coating layer 10C, which can be visually perceived through the second coating layer 10D, becomes larger. Here, for example, consider the following arrangement: the outer edge of the upper housing 10 is formed into an R shape, while the edge of the opening 11 for inserting the input key assembly 2 is designed to be approximately vertical, i.e., the size of the R shape is smaller than the outer edge of the upper housing 10. In this case, since the area (linewidth) of the polyurethane-based coating color of the first coating layer 10C, which can be visually perceived through the second coating layer 10D, becomes larger at the edge of the opening 11, the hue based on the varnish coating can be highlighted even when the input key assembly 2 is inserted. Furthermore, in Figure 3 (A) Figure 3 In (B), the illustration is omitted, but an aluminum oxide film 10B is formed on the aluminum substrate 10A.

[0015] In electrical products disclosed in Japanese Patent Application Publication No. 2005-229080, which is considered prior art, there is a problem that the coating is prone to peeling off when the adhesion between the outer casing surface and the coating is weak, which also damages the aesthetics.

[0016] The calculator 100 of this embodiment was made in view of the above-mentioned situation, and its purpose is to provide an electronic device and a housing component with a coating that is difficult to peel off and has a high aesthetic appeal. The calculator 100 of this embodiment is a calculator (electronic device) 100 having a housing (housing component) 1 with a coating layer on the surface of a substrate (aluminum material). The coating layer has: a first coating layer 10C, which is provided on the substrate (aluminum material); and a second coating layer 10D, which is provided on the first coating layer 10C and contains raw lacquer paint (Zhuhe lacquer). The first coating layer 10C is configured to improve the adhesion between the substrate and the first coating layer 10C, and between the first coating layer 10C and the second coating layer 10D. The second coating layer 10D has a thick film region and a thin film region in which the second coating layer 10D is thinner than the thick film region, and is configured such that the coating color of the first coating layer 10C can be seen through the second coating layer 10D in the thin film region. Therefore, according to the housing 1 of the calculator 100, by providing the first coating layer 10C, the adhesion between the substrate and the first coating layer 10C, as well as between the first coating layer 10C and the second coating layer 10D, can be improved, thus making the first coating layer 10C and the second coating layer 10D difficult to peel off. Furthermore, according to the housing 1 of the calculator 100, by having a thick film region and a thin film region where the second coating layer 10D is thinner than the thick film region, the varnish-based color that allows the coating color of the first coating layer 10C to pass through the second coating layer 10D in the thin film region can be highlighted, thus improving aesthetics.

[0017] Furthermore, in the calculator 100 of this embodiment, the second coating layer 10D is configured such that the coating color of the first coating layer 10C is not visible through the second coating layer 10D in the thick film region. Therefore, according to the housing 1 of the calculator 100, since contrast can be applied in the thick film region and the thin film region, the hue based on the varnish coating can be made more prominent.

[0018] Furthermore, in the calculator 100 of this embodiment, the substrate of the outer casing 1 is made of aluminum material that has undergone acid-resistant aluminum treatment. Therefore, according to the outer casing 1 of the calculator 100, since the substrate (aluminum substrate 10A) has undergone acid-resistant aluminum treatment (aluminum oxide film 10B), the corrosion resistance / wear resistance of the outer casing 1 can be improved. In addition, according to the outer casing 1 of the calculator 100, since the substrate (aluminum substrate 10A) has undergone acid-resistant aluminum treatment, the adhesion to the first coating layer 10C can be improved. Furthermore, according to the outer casing 1 of the calculator 100, by performing acid-resistant aluminum treatment on the substrate (aluminum substrate 10A) and using a black dye to set the surface where the acid-resistant aluminum treatment has been performed to black, the color (silver-white) of the substrate (aluminum substrate 10A) can be ignored. As a result, the hue formed by the first coating layer 10C and the second coating layer 10D based on varnish coating can be further highlighted.

[0019] Furthermore, in the calculator 100 of this embodiment, the first coating layer 10C of the outer casing 1 comprises a polyurethane-based coating. Therefore, according to the outer casing 1 of the calculator 100, since the first coating layer 10C is composed of a polyurethane-based coating, the adhesion between the substrate and the first coating layer 10C, as well as between the first coating layer 10C and the second coating layer 10D, can be further improved.

[0020] Furthermore, the calculator 100 of this embodiment uses vermilion lacquer as a raw lacquer coating. Therefore, based on the casing 1 of the calculator 100, it is possible to achieve a color change such that the transparency is low and it appears black at the beginning of the formation of the second coating layer 10D, but as time goes by, the color (vermilion) of the polyurethane-based coating layer (first coating layer 10C) of the lower layer is gradually revealed.

[0021] Furthermore, in the calculator 100 of this embodiment, due to the surface tension of the lacquer coating (Zhuhe lacquer), the thin film region constitutes the outer edge of the outer shell 1, and the thick film region constitutes the region other than the outer edge. Therefore, according to the outer shell 1 of the calculator 100, by making the hue of the first coating layer 10C appear at the outer edge of the outer shell 1, the hue based on the varnish coating is highlighted, thereby further improving the aesthetics.

[0022] Furthermore, in the calculator 100 of this embodiment, the outer casing (shell member) 1 has a plurality of openings 11, 12, 13 (see reference). Figure 2 Furthermore, the thin film region forms the edges of each of the multiple openings 11, 12, and 13, and the thick film region forms the boundaries between the openings 11, 12, and 13. Therefore, according to the housing 1 of the calculator 100, since the hue of the first coating layer 10C can appear at the edges of the openings 11, 12, and 13, the hue based on the varnish coating is further highlighted, thus improving the aesthetics.

[0023] The present invention has been specifically described above based on the embodiments, but this disclosure is not limited to the above embodiments and can be modified within the scope without departing from its spirit. For example, in the above embodiments, an example is shown in which the outer casing 1 has a plurality of openings 11, 12, 13, but the outer casing 1 may have only one opening, or the outer casing 1 may not have any openings.

[0024] Furthermore, in the above embodiment, aluminum material treated with acid-resistant aluminum is used as the substrate of the outer shell 1, but other metal materials can also be used as the substrate. When other metal materials are used as the substrate, acid-resistant aluminum treatment is not required. Additionally, wood can also be used as the substrate of the outer shell 1. When wood is used as the substrate, for example, the rinjima coating can be performed instead of the aforementioned varnish coating (steps 3 and 4).

[0025] Furthermore, in the above embodiments, in the third step (refer to...) Figure 2 In this process, a polyurethane-based coating (vermilion) is applied (primer) to the surface of the alumina film 10B. However, the primer is not limited to a polyurethane-based coating. The primer only needs to ensure adhesion. Furthermore, in the above embodiment, in the third step (see...) Figure 2 In this process, a vermilion polyurethane-based coating is used as the primer, but the color of the polyurethane-based coating is not particularly limited. The color of the polyurethane-based coating can also be blue, yellow, green, etc. To match the color of the polyurethane-based coating, the dye used for acid-resistant aluminum treatment (colored acid-resistant aluminum treatment) can also be any color other than black. Alternatively, acid-resistant aluminum treatment can be performed without coloring.

[0026] Furthermore, the detailed structure of each structural element of the calculator 100 in the above embodiments can, of course, be appropriately modified without departing from the spirit of this disclosure.

Claims

1. An electronic device, characterized in that, A housing component having a coating layer on the surface of a substrate. The coating layer comprises: a first coating layer disposed on the substrate; and a second coating layer disposed on the first coating layer and comprising lacquer coating. The first coating layer is configured to improve the adhesion between the substrate and the first coating layer, as well as between the first coating layer and the second coating layer. The second coating layer has a first region and a second region that is thinner than the first region, configured such that the coating color of the first coating layer can be seen through the second coating layer in the second region.

2. The electronic device according to claim 1, wherein, The second coating layer is configured such that the coating color of the first coating layer is not visible through the second coating layer in the first region.

3. The electronic device according to claim 1, wherein, The substrate is aluminum material that has undergone acid-resistant aluminum treatment.

4. The electronic device according to claim 1, wherein, The first coating layer comprises a polyurethane-based coating.

5. The electronic device according to claim 1, wherein, The raw lacquer coating is Zhuhe lacquer.

6. The electronic device according to claim 1, wherein, Due to the surface tension of the lacquer coating, the second region constitutes the outer edge of the housing member, and the first region constitutes the region other than the outer edge.

7. The electronic device according to claim 1, wherein, The housing component has an opening. Due to the surface tension of the lacquer coating, the second region forms the edge of the opening.

8. The electronic device according to claim 1, wherein, The housing component has multiple openings. Due to the surface tension of the lacquer coating, the second region forms the edge of each of the plurality of openings, and the first region forms the boundary between the openings.

9. A shell component, characterized in that, The substrate has a coating layer on its surface. The coating layer comprises: a first coating layer disposed on the substrate; and a second coating layer disposed on the first coating layer and comprising lacquer coating. The first coating layer is configured to improve the adhesion between the substrate and the first coating layer, as well as between the first coating layer and the second coating layer. The second coating layer has a first region and a second region that is thinner than the first region, configured such that the coating color of the first coating layer can be seen through the second coating layer in the second region.

Images