Electronic devices

Abstract

The cover (230) that closes the opening (210b) of the housing of the computer comprises an inner cover (231), an outer cover (232), and a water blocking member (233). An engaging hole (231k) is provided at the end of the inner cover (231) on the side close to the hinge axis (Ar). An engaging protrusion (210f) is provided on the housing, and the engaging protrusion (210f) engages with the engaging hole (231k) when the inner cover (231) is rotated to face the bottom surface (210g). A right protrusion (232d) is provided at the end of the outer cover (232) on the side farther from the hinge axis (Ar). An engaging recess (210j) is provided on the housing, and the engaging recess (210j) engages with the right protrusion (232d) when the outer cover (232) slides to the side away from the hinge axis (Ar).

Description

[0001] This application is a divisional application of the invention patent application with application number 201880012571.3, application date February 16, 2018, and invention name “electronic device”. Technical Field

[0002] The present invention relates to an electronic device having a cover for closing an opening of a housing. Background Art

[0003] Patent Document 1 discloses an electronic device having a waterproof cover that closes an opening of a housing. The waterproof cover is connected to the housing via a resin fixing portion that functions as a hinge, and closes the opening of the housing.

[0004] Prior Art Literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Publication No. 2013-62234 Summary of the invention

[0007] If the hinge is made of resin as described above, when the electronic device is left in a high-temperature environment, the cover softens and plastically deforms in the cover opening direction, resulting in a possibility that the waterproof performance is degraded.

[0008] The present invention provides a technology for suppressing a decrease in waterproof performance of an electronic device having a cover for closing an opening of a housing.

[0009] An electronic device according to one embodiment of the present invention includes a cover that closes an opening provided on a predetermined surface of a housing that accommodates an electronic component and is connected to the housing via a hinge portion.

[0010] The cover includes an inner cover, an outer cover, and a water blocking member attached to the inner surface of the inner cover.

[0011] The hinge portion has a hinge axis parallel to the predetermined surface, is connected to one end of the inner cover, and supports the inner cover so as to be rotatable about the hinge axis.

[0012] The outer cover is supported by the inner cover so as to be slidable along the outer surface of the inner cover in a direction perpendicular to the hinge axis.

[0013] When the inner cover rotates to face the predetermined surface, the water blocking member comes into contact with the periphery of the opening of the predetermined surface to close the opening.

[0014] A first engaging portion is arranged at the end of the inner cover on the side close to the hinge axis.

[0015] The housing is provided with a second engaging portion that engages with the first engaging portion when the inner cover is rotated to face the predetermined surface.

[0016] A third engaging portion is provided at an end portion of the outer cover on a side far from the hinge axis.

[0017] The housing is provided with a fourth engaging portion, which engages with the third engaging portion when the outer cover slides to a side away from the hinge axis.

[0018] According to the technology of the present invention, the cover is engaged with the housing not only at the end on the side farther from the hinge axis, but also at the end on the side closer to the hinge axis. Therefore, even if the cover is plastically deformed in the direction of opening the cover, it is possible to prevent the cover from being loosely closed. Therefore, it is possible to prevent the waterproof performance of the electronic device having the cover that closes the opening of the housing from being reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a perspective view of the computer according to the first embodiment.

[0020] Figure 2A This is an enlarged perspective view of the cover arrangement portion of the keyboard unit, showing a state in which the cover is closed.

[0021] Figure 2B This is an enlarged perspective view of the cover arrangement portion of the keyboard unit, showing a state in which the cover is transitioning from an open state to a closed state.

[0022] Figure 2C This is an enlarged perspective view of the cover arrangement portion of the keyboard unit, showing a state in which the cover is opened.

[0023] Figure 3A This is an enlarged perspective view of the cover arrangement portion of the housing of the keyboard unit.

[0024] Figure 3B This is an enlarged perspective view of the cover arrangement portion of the housing of the keyboard unit.

[0025] Figure 4A It is an exploded perspective view of the cover.

[0026] Figure 4B It is an exploded perspective view of the cover.

[0027] Figure 5A This is a cross-sectional view of the cover arrangement portion of the keyboard unit, showing a state in which the cover is closed.

[0028] Figure 5B This is a cross-sectional view of the cover arrangement portion of the keyboard unit, showing a state in which the cover is transitioning from an open state to a closed state.

[0029] Figure 5C This is a cross-sectional view of the cover arrangement portion of the keyboard unit, showing a state in which the cover is opened.

[0030] Description of Reference Numerals

[0031] 1 Computer

[0032] 100 Tablet Computer

[0033] 101 Display

[0034] 200 Keyboard Unit

[0035] 201 Keyboard

[0036] 202 Touchpad

[0037] 203 LAN connector

[0038] 210 Shell

[0039] 210A upper shell

[0040] 210B Lower housing

[0041] 210a first recess

[0042] 210b Opening

[0043] 210c Peripheral rib

[0044] 210d Threaded boss

[0045] 210e Left side of face

[0046] 210f Engagement protrusion

[0047] 210g bottom

[0048] 210h Concave surface

[0049] 210i Right side of face

[0050] 210j engagement recess

[0051] 210k Second recess

[0052] 230 Cover

[0053] 231 Inner cover

[0054] 231a Main body

[0055] 231b recess

[0056] 231c Upper Slot

[0057] 231d Lower trough

[0058] 231f Vertical wall

[0059] 231k snap-in hole

[0060] 231m Outer protrusion

[0061] 231n Left end

[0062] 232 outer cover

[0063] 232b Upper protrusion

[0064] 232c Lower protrusion

[0065] 232d Right protrusion

[0066] 232e Inner protrusion

[0067] 233 Water blocking components

[0068] 234 Fixed plate

[0069] 235 Inner cover member

[0070] 234a Cylinder

[0071] 234b Hinge

[0072] 240 screws. DETAILED DESCRIPTION

[0073] Hereinafter, the embodiments will be described in detail with reference to the accompanying drawings as appropriate. However, unnecessary detailed descriptions may be omitted. For example, detailed descriptions of known matters and repeated descriptions of substantially the same structures may be omitted. This is to avoid the following description from becoming unnecessarily lengthy so as to make it easy for those skilled in the art to understand.

[0074] It should be noted that the inventor provides the drawings and the following descriptions to facilitate those skilled in the art to fully understand the present invention, and does not intend to limit the subject matter recorded in the technical solution through the drawings and the following descriptions.

[0075] (Implementation Method 1)

[0076] Hereinafter, Embodiment 1 will be described with reference to the drawings.

[0077] [1.Structure]

[0078] [1-1. Summary]

[0079] Figure 1 1 is a perspective view of a computer according to Embodiment 1. The computer 1 is an example of an electronic device. The computer 1 includes a tablet computer 100 and a keyboard unit 200 .

[0080] A display unit 101 having a touch panel is provided on the front surface of the tablet computer 100. The tablet computer 100 also contains various electronic components such as a central processing unit (CPU), a memory, a solid state drive (SSD), an image processor, and a communication module.

[0081] The keyboard unit 200 includes a keyboard 201 including a plurality of keys (keys are not shown in the figure) and a touch pad 202. The keyboard unit 200 also includes an interface (not shown) for exchanging data with the tablet computer 100 and an external device interface for connecting an external device. Various electronic components such as a keyboard controller and a touch pad controller are accommodated inside the keyboard unit 200.

[0082] A LAN connector 203 to which a LAN cable can be connected is housed on the right side of the keyboard unit 200. In the housing 210, an openable and closable cover 230 is provided at a position facing an insertion port of the LAN connector 203.

[0083] [1-2. Structure of cover arrangement portion]

[0084] Figure 2A , Figure 2B and Figure 2C 2 is an enlarged perspective view of the cover configuration portion of the keyboard unit. Figure 1 As shown, the housing 210 is composed of an upper housing 210A and a lower housing 210B. Figure 2A , Figure 2B and Figure 2C In the figure, the lower case 210B is omitted. In addition, the screws 240 for fixing the fixing plate 234 of the cover 230 to the case 210 are indicated by dotted lines.

[0085] Figure 2A FIG. 2 shows a state where the cover 230 is closed. The cover 230 includes an inner cover 231 and an outer cover 232 that can slide in the left-right direction relative to the inner cover 231. The cover 230 is configured to be rotatable around the hinge axis Ar of the hinge portion 234b. In order to open the cover 230, as shown in FIG. Figure 2B As shown, the outer cover 232 is slid toward the hinge portion 234b to release the engagement between the right protrusion 232d of the outer cover 232 and the engagement recess 210j of the housing 210. As a result, the cover 230 can rotate around the hinge axis Ar. Figure 2C As shown in FIG. 1 , the cover 230 is opened by rotating around the hinge axis Ar, thereby exposing the opening 210b communicating with the LAN connector 203.

[0086] Here, if Figure 2A and Figure 2BAs shown in FIG. 2 , when the cover 230 is closed, the engaging protrusion 210f of the housing 210 is fitted into the engaging hole 231k formed on the left end side of the inner cover 231. Figure 2A In this way, when the outer cover 232 slides to the side (right side) away from the hinge axis Ar, the cover 230 is locked to the housing 210 at both the right end side and the left end side. The engaging protrusion 210f of the housing 210 is set on a rotation trajectory centered on the hinge axis Ar of the engaging hole 231k of the cover 230. Therefore, when the cover 230 is rotated to open, the engagement between the engaging hole 231k of the cover 230 and the engaging protrusion 210f of the housing 210 is released.

[0087] Next, refer to Figure 3A , Figure 3B , Figure 4A , Figure 4B The structure of the portion of the computer 1 where the cover 230 is provided will be described in more detail. Figure 3A , Figure 3B 2 is an enlarged perspective view of the cover configuration portion of the housing 210 of the keyboard unit 200. It should be noted that, Figure 3A This is a perspective view of the cover configuration part viewed from the upper right. Figure 3B This is a perspective view of the cover configuration portion as viewed from the upper left. Figure 4A , Figure 4B It is an exploded perspective view of the cover 230 . Figure 4A is a perspective view of the cover 230 after being disassembled as viewed from the outer surface side. Figure 4B 2 is a perspective view of the cover 230 after disassembly as viewed from the inner surface side. Figure 3A In the following drawings, directions are indicated for ease of explanation and understanding. The directions are indicated based on the side of the keyboard unit 200 with the cover 230 set in the front, but do not mean that the computer 1 should be used or configured in this direction. It should be noted that in the direction indication examples of these drawings, the left-right direction corresponds to the front-to-back direction of the device (the depth direction of the device), the inside-out direction corresponds to the width direction of the device, and the top-to-bottom direction corresponds to the thickness direction of the device.

[0088] like Figure 3A , Figure 3B As shown, a first recess 210a for engaging the cover 230 (inner cover 231) and a second recess 210k for engaging the fixing plate 234 are provided on the side of the housing 210. A threaded boss 210d for engaging the cylindrical portion 234a of the fixing plate 234 of the inner cover member 235 is provided upright in the second recess 210k for engaging the fixing plate 234.

[0089] The central portion of the bottom surface 210g of the first recessed portion 210a is a recessed surface 210h that is recessed toward the inside of the housing. The recessed surface 210h has a size for the water blocking member 233 to fit. The recessed surface 210h of the bottom surface 210g is provided with an opening 210b for the LAN connector 203. In addition, a frame-shaped peripheral rib 210c that protrudes outward is provided along the periphery of the opening 210b of the recessed surface 210h.

[0090] A partition-shaped left side surface 210e constituting the left side surface of the first recess 210a is provided between the first recess 210a and the second recess 210k. An engaging protrusion 210f protruding toward the first recess 210a is provided on the left side surface 210e.

[0091] A groove-shaped engaging recess 210j is provided on the right side surface 210i of the first recess 210a.

[0092] like Figure 4A , Figure 4B As shown, the cover 230 has an outer cover 232 , an inner cover member 235 , and a water blocking member 233 .

[0093] The outer cover 232 is made of a resin such as polycarbonate (PC) or ABS. It should be noted that the type of resin is not limited thereto. The outer cover 232 is a roughly quadrilateral plate-shaped member, and an upper protrusion 232b protruding upward is provided on its upper side, a lower protrusion 232c protruding downward is provided on its lower side, and a right protrusion 232d protruding to the right is provided on its right side. In addition, an inner protrusion 232e protruding inward is provided on the surface of the outer cover 232 on the inner cover 231 side (the inner surface of the outer cover 232).

[0094] The inner cover member 235 includes an inner cover 231, a fixed plate 234, and a hinge portion 234b. The hinge portion 234b connects the inner cover 231 and the fixed plate 234. The inner cover member 235 is made of a resin such as polypropylene (PP) that is durable against repeated bending. Thus, the hinge portion 234b and the inner cover 231 can be formed in the same component. In the case where the resin raw material of the inner cover member 235 is not PP, it may not withstand repeated bending and be damaged. In this case, for example, it is considered to use other components such as metal hinges as hinges for the cover, but in electronic devices, it is not preferred in terms of design, weight, etc. The hinge portion 234b is configured to be thinner than the inner cover 231 and the fixed plate 234. Thus, the hinge portion 234b connects the inner cover 231 and the fixed plate 234 so that they can rotate relative to each other around the hinge axis Ar. When the cover 230 is attached to the housing 210 , the hinge axis Ar is parallel to the bottom surface 210 g of the first recess 210 a .

[0095] A cylindrical portion 234 a extending inward is provided substantially at the center of the fixing plate 234 .

[0096] The inner cover 231 includes a plate-shaped main body portion 231 a and a vertical wall portion 231 f connected to the left end portion of the main body portion 231 a .

[0097] A groove-shaped recess 231b extending in the left-right direction is provided in the main body 231a. The outer cover 232 is fitted into the recess 231b. An upper groove 231c is provided on the upper side of the recess 231b, and a lower groove 231d is provided on the lower side of the recess 231b. When the outer cover 232 is fitted into the inner cover 231, the upper protrusion 232b of the outer cover 232 is fitted into the upper groove 231c, and the lower protrusion 232c of the outer cover 232 is fitted into the lower groove 231d. The lengths of the upper groove 231c and the lower groove 231d in the left-right direction are respectively longer than the lengths of the upper protrusion 232b and the lower protrusion 232c of the outer cover 232 in the left-right direction. Thus, the outer cover 232 can slide in the left-right direction relative to the inner cover 231. In other words, the outer cover 232 can slide along the outer surface of the inner cover 231 in a direction perpendicular to the hinge axis Ar.

[0098] In addition, an outer protrusion 231 m that protrudes outward is provided on the bottom surface of the recessed portion 231 b of the main body portion 231 a (the outer surface of the inner cover 231 ).

[0099] The vertical wall 231f is formed into a plate extending perpendicularly from the left end of the bottom of the recess 231b. An engagement hole 231k is provided in the middle of the vertical direction of the vertical wall 231f. The engagement hole 231k has a shape that can be engaged with the engagement protrusion 210f of the housing 210.

[0100] The water blocking member 233 is made of elastic polyurethane foam and is attached to the inner surface of the main body 231 a of the inner cover 231 by using a double-sided tape.

[0101] [1-3. Engagement structure between cover and housing]

[0102] In addition to the aforementioned Figure 2A , Figure 2B and Figure 2C Other than that, refer to Figure 5A , Figure 5B and Figure 5C , based on the action of closing the cover 230, the engagement structure between the cover 230 and the housing 210 is described in more detail. Figure 5A , Figure 5B and Figure 5C 2 is a cross-sectional view of the cover configuration portion of the keyboard unit 200. It should be noted that, Figure 5A express Figure 2A A1-A1 section. Figure 5B express Figure 2B A2-A2 section. Figure 5C express Figure 2C A3-A3 section.

[0103] exist Figure 2C , Figure 5C In the state where the cover 230 is opened, the cover 230 is rotated in the opening direction around the hinge axis Ar, and the opening 210 b of the housing 210 is exposed.

[0104] To close the cover 230 from this state, first, Figure 2B , Figure 5B As shown, the cover 230 is rotated around the hinge axis Ar as shown by the arrow S1, and the cover 230 is fitted into the first recess 210a. At this time, the engaging protrusion 210f of the housing 210 is fitted into the engaging hole 231k of the vertical wall portion 231f constituting the left end of the inner cover 231. This also causes the left end 231n of the bottom surface of the recess 231b of the inner cover 231 to be clamped by the engaging protrusion 210f and the bottom surface 210g of the housing 210. Therefore, the movement of the left end 231n of the inner cover 231 in the direction away from the bottom surface 210g of the first recess 210a of the housing 210 is restricted. In other words, the situation in which the end of the inner cover 231 close to the hinge axis Ar, that is, the left end 231n side, becomes loosely closed is restricted.

[0105] Then, if Figure 2A , Figure 5A As shown, the outer cover 232 is slid to the right side (the side away from the hinge axis Ar) as shown by the arrow S2. As a result, the right protrusion 232d of the outer cover 232 is engaged with the engaging recess 210j of the right side surface 210i of the housing 210. Therefore, the right end side of the outer cover 232 is restricted from moving in the direction away from the bottom surface 210g of the first recess 210a of the housing 210. In other words, the end of the inner cover 231 that is farther from the hinge axis Ar, that is, the right end side, is restricted from being closed loosely.

[0106] like Figure 2A , Figure 5A As shown, when the cover 230 is closed, the water blocking member 233 is pressed into the peripheral rib 210c, and the peripheral rib 210c bites into the water blocking member 233, and the two are in close contact. This can effectively prevent liquid such as water from entering the housing 210 through the opening 210b.

[0107] Thus, in the computer 1 of the present embodiment, when the cover 230 is closed and the outer cover 232 is slid to the right, the cover 230 is locked to the housing 210 not only at the right end side far from the hinge axis Ar but also at the left end side close to the hinge axis Ar. That is, the cover 230 is locked to the housing 210 at both the right end side and the left end side. Therefore, even if the inner cover 231 is plastically deformed in the cover opening direction, it is possible to prevent the cover 230 from being loosely closed. Therefore, the waterproof performance of the computer 1 can be maintained in an appropriate state.

[0108] Here, the problems in the existing electronic devices are described in more detail. For example, in a parked vehicle in summer, a high temperature (e.g., above 50 degrees) that does not occur in a normal use environment may be generated. If the electronic device is placed in such a high temperature environment, the resin cover will soften and plastically deform in the direction of opening the cover, resulting in the possibility of reduced waterproof performance.

[0109] In contrast, in the computer 1 of the present embodiment, the cover 230 is not only locked to the housing 210 at the right end side farther from the hinge axis Ar, but also at the left end side closer to the hinge axis Ar. Therefore, assuming that the inner cover 231 made of PP softens, even if a force Pr in the opening direction generated by the elastic force of the water blocking member 233 is applied to the cover 230, the inner cover 231 is plastically deformed in the cover opening direction, and the inner cover 231 is difficult to separate from the bottom surface 210g of the first recessed portion 210a of the housing 210.

[0110] In the computer 1 of the present embodiment, when the cover 230 is closed, the engagement hole 231k of the vertical wall portion 231f constituting the left end portion of the inner cover 231 is automatically engaged with the engagement protrusion 210f of the housing 210. Therefore, the user does not need to perform an additional operation for engaging the engagement hole 231k of the left end portion of the inner cover 231 with the engagement protrusion 210f of the housing 210.

[0111] In addition, when the outer cover 232 slides toward the side away from the hinge axis Ar, the inner protrusion 232e of the outer cover 232 passes over the outer protrusion 231m of the inner cover 231. Moreover, the inner protrusion 232e is located on the side farther from the hinge axis Ar than the outer protrusion 231m and abuts against the outer protrusion 231m. Therefore, as long as the user does not apply an operating force to the left, the outer cover 232 is restricted from moving toward the hinge axis Ar. Therefore, the waterproof performance is further improved. It should be noted that the inner protrusion 232e can also be located on the side farther from the hinge axis Ar than the outer protrusion 231m and close to the outer protrusion 231m.

[0112] [2. Effects, etc.]

[0113] The computer 1 (an example of electronic equipment) of the present embodiment includes a cover 230 that closes an opening 210b provided on a bottom surface 210g (predetermined surface) of a housing 210 that accommodates electronic components and is connected to the housing 210 via a hinge portion 234b.

[0114] The cover 230 includes an inner cover 231 , an outer cover 232 , and a water blocking member 233 attached to the inner surface of the inner cover 231 .

[0115] The hinge portion 234b has a hinge axis Ar parallel to the bottom surface 210g (predetermined surface), is connected to the left end (one end) of the inner cover 231, and supports the inner cover 231 so as to be rotatable around the hinge axis Ar.

[0116] The outer cover 232 is supported so as to be slidable along the outer surface of the inner cover 231 in a direction perpendicular to the hinge axis Ar.

[0117] When the inner cover 231 rotates to face the bottom surface 210g (predetermined surface), the water blocking member 233 closes the opening 210b by causing the inner cover 231 to abut against the periphery of the opening 210b of the bottom surface 210g (predetermined surface).

[0118] An engaging hole 231 k (first engaging portion) is provided at an end portion of the inner cover 231 on the side close to the hinge axis Ar.

[0119] The housing 210 is provided with an engaging protrusion 210 f (second engaging portion) that engages with the engaging hole 231 k (first engaging portion) when the inner cover 231 is rotated to face the bottom surface 210 g (predetermined surface).

[0120] A right protrusion 232d (third engaging portion) is provided at the end portion of the outer cover 232 on the side farther from the hinge axis Ar.

[0121] The housing 210 is provided with an engaging recess 210 j (fourth engaging portion) which engages with the right protrusion 232 d (third engaging portion) when the outer cover 232 slides to the side away from the hinge axis Ar.

[0122] Thus, the cover 230 is engaged with the housing 210 not only at the end farther from the hinge axis Ar but also at the end closer to the hinge axis Ar. Therefore, even if the cover 230 is plastically deformed in the cover opening direction, it is possible to prevent the cover 230 from being loosely closed. Therefore, the degradation of the waterproof performance of the computer 1 is prevented.

[0123] In the present embodiment, the inner cover 231 and the outer cover 232 are made of elastic resin.

[0124] An outer protrusion 231 m (first protrusion) that protrudes toward the outer cover 232 is provided on the outer surface of the inner cover 231 .

[0125] An inner protrusion 232 e (second protrusion) that protrudes toward the inner cover 231 is provided on the inner surface of the outer cover 232 .

[0126] In the process of the outer cover 232 sliding toward the side away from the hinge axis Ar, the inner protrusion 232e (second protrusion) passes over the outer protrusion 231m (first protrusion).

[0127] When the right protrusion 232d (third engaging portion) engages with the engaging recess 210j (fourth engaging portion), the inner protrusion 232e (second protrusion) is located farther from the hinge axis Ar than the outer protrusion 231m (first protrusion) and abuts against the outer protrusion 231m (first protrusion).

[0128] This prevents the outer cover 232 from moving toward the hinge axis Ar due to vibration, elasticity of the water blocking member 233, etc. Therefore, the engagement between the right protrusion 232d (third engagement portion) and the engagement recess 210j (fourth engagement portion) can be prevented from being released due to the above reasons.

[0129] In the present embodiment, the housing 210 is made of a magnesium alloy.

[0130] Thus, the outward force applied to the right protrusion 232d (third engaging portion) of the cover 230 and the engaging hole 231k (first engaging portion) of the cover 230 through the water blocking member 233 can be appropriately blocked by the magnesium alloy housing 210 having high rigidity. Therefore, the cover 230 can be restrained from moving in the opening direction.

[0131] In the present embodiment, the opening 210 b is an opening for the LAN connector 203 (an example of a connector for connecting an external device or a cable).

[0132] This can suppress a decrease in the waterproof performance of the computer 1 having the LAN connector 203 .

[0133] (Other embodiments)

[0134] As described above, the first embodiment is described as an example of the technology of the present invention. However, the technology of the present invention is not limited thereto, and can be applied to embodiments in which changes, substitutions, additions, omissions, etc. are appropriately made. In addition, the components described in the first embodiment can also be combined to form a new embodiment. Therefore, other embodiments are exemplified below.

[0135] (1) In the above embodiment, the electronic device of the present invention is applied to the keyboard unit of the computer 1. However, the electronic device of the present invention can be widely applied to electronic devices such as tablet computers, smartphones, and desktop computers.

[0136] (2) In the above embodiment, the first engaging portion of the present invention is constituted by the engaging hole 231k (hole), and the second engaging portion is constituted by the engaging convex portion 210f (convex portion). However, in the present invention, the first engaging portion may be constituted by a concave portion, and the second engaging portion may be constituted by a convex portion. In addition, the first engaging portion may be constituted by a convex portion, and the second engaging portion may be constituted by a concave portion or a hole.

[0137] (3) In the above embodiment, the third engaging portion of the present invention is constituted by the right protrusion 232d (convex portion), and the fourth engaging portion is constituted by the engaging recessed portion 210j (recessed portion). However, in the present invention, the fourth engaging portion engaged with the third engaging portion may be constituted by a hole. In addition, the third engaging portion may be constituted by a recessed portion or a hole, and the fourth engaging portion may be constituted by a convex portion.

[0138] (4) In the above embodiment, the cover is exemplified as a cover for closing a housing opening for a LAN connector. However, in the present invention, the cover may be a cover for closing a housing opening for a connector capable of connecting a connection cable of USB or HDMI (registered trademark) standards, an external device, etc. Alternatively, the cover may be a cover for closing other openings of the housing of an electronic device.

[0139] As above, the implementation mode is described as an example of the technology of the present invention. For this purpose, drawings and detailed descriptions are provided. Therefore, the components recorded in the drawings and detailed descriptions include not only the components necessary for solving the problem, but also components that are not necessary for solving the problem in order to illustrate the above technology. Therefore, it should not be directly determined that these non-essential components are necessary based on the fact that they are recorded in the drawings and detailed descriptions. In addition, the above-mentioned implementation mode is an implementation mode for illustrating the technology of the present invention, and various changes, substitutions, additions, omissions, etc. can be made within the scope of the technical solution or its equivalent.

[0140] Industrial Applicability

[0141] The present invention can be widely used in electronic devices having a cover for closing an opening of a casing.

Claims

1. An electronic device comprising a cover that closes an opening provided on a predetermined surface of a housing that accommodates an electronic component and is connected to the housing, wherein: The cover includes an inner cover, an outer cover, and a water blocking member mounted on the inner surface of the inner cover. The outer cover is supported by the inner cover so as to be slidable along the outer surface of the inner cover in a direction substantially parallel to the predetermined surface. The water blocking member abuts against the periphery of the opening of the predetermined surface at a position where the inner cover faces the predetermined surface to close the opening. A first engaging portion is provided at an end portion of one side of the inner cover. The housing is provided with a second engaging portion, the second engaging portion engaging with the first engaging portion in a direction substantially parallel to the predetermined surface when the inner cover is opposed to the opening. A third engaging portion is provided at an end of the outer cover on a side far from the first engaging portion of the inner cover. The housing is provided with a fourth engaging portion, and the fourth engaging portion engages with the third engaging portion when the outer cover slides to a side away from the second engaging portion.

2. The electronic device according to claim 1, wherein: The inner cover and the outer cover are made of elastic resin. A first protrusion is provided on the outer surface of the inner cover and protrudes toward the outer cover. A second protrusion is provided on the inner surface of the outer cover and protrudes toward the inner cover. When the outer cover slides toward the side away from the first engaging portion of the inner cover, the second protrusion passes over the first protrusion. When the third engaging portion is engaged with the fourth engaging portion, the second protrusion is located at a side farther from the first engaging portion of the inner cover than the first protrusion, and is in contact with or close to the first protrusion.

3. The electronic device according to claim 1 or 2, wherein: The housing is made of magnesium alloy.

4. The electronic device according to claim 1 or 2, wherein: The opening is an opening for a connector to connect an external device or a cable.

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