JP2010199340A - Electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic apparatus capable of suitably maintaining shield effect even when having a shield case structure including a first case and a second case. <P>SOLUTION: The electronic apparatus includes an operation portion-side housing 2, a circuit board 70, and a shield case S having a frame 7 and a lid body 8 engaged with the frame 7 to cover an electronic component 80, wherein the frame 7 has a side wall part 71 extending from a first plane 70a of the circuit board 70 in a first direction D1, a flange part 72 formed connecting with the side wall part 71 and extending in a plane direction D2 of the first surface 70a, and an opening part 73 formed inside the flange part 72 in the plane direction D2, and the lid body 8 has a principal surface part 81 covering the opening part 73 in the state of engagement with the frame 7, and a side wall part 82 arranged extending from the principal surface part 81 toward the first plane 70a of the circuit board 70 and opposed to the side wall part 71, and a dispensing gasket 9 with conductivity is disposed between the flange part 72 and principal surface part 81 in the state of engagement. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electronic device having a shield case that covers an electronic component mounted on a circuit board.

  A circuit board on which electronic components are mounted (mounted) is built in a housing of an electronic device such as a mobile phone. Many electronic components mounted on a circuit board are susceptible to noise such as electromagnetic waves such as high-frequency circuit components for wireless communication. Such electronic components that are susceptible to noise must be covered with a shield case to shield (shield) the noise.

  As the shield case, there is a one-piece type shield case in which a main surface portion that forms a covering surface that covers an electronic component and a side wall that hangs from the periphery of the main surface portion are integrally formed. In addition, there is a two-piece type shield case in which the main surface portion and the side wall are formed separately, and a shield body is formed by fitting a lid forming the main surface portion to a frame body forming the side wall (for example, the following) Patent Document 1).

  According to the two-piece shield case, for example, a frame (first case) is fixed to the mounting surface of the circuit board so as to surround the electronic component, and a lid (second body) is attached to the frame after a predetermined process. ), A shield case fixed to the circuit board can be formed.

JP 2006-351196 A

  In the electronic apparatus having the shield case structure having the first case and the second case described above, a gap is likely to be generated between them, and it is generally difficult to maintain the shielding effect.

  An object of this invention is to provide the electronic device which can maintain a shield effect suitably even if it has the shield case structure which has a 1st case and a 2nd case.

  An electronic apparatus according to the present invention includes a housing, a circuit board that is disposed inside the housing and has one or more electronic components mounted on one surface, and one or more mounted on one surface of the circuit board. A first case surrounding a plurality of electronic components, and a shield case including a second case fitted to the first case and covering the one or more electronic components, the first case The case includes a first side wall portion extending in a direction away from the one surface of the circuit board, a collar portion formed continuously with the first side wall portion and extending in the surface direction on the one surface, and the collar portion. An opening formed on the inner side in the surface direction, and the second case has a main surface portion covering the opening in the fitted state fitted to the first case, and the main case If it is arranged to extend from the surface part to the one surface side of the circuit board, A second side wall portion disposed opposite to the first side wall portion, and a conductive sealing material is disposed between the collar portion and the main surface portion in the fitted state. It is characterized by.

  Moreover, it is preferable that the said collar part is provided with the sealing material accommodating part dented in the said one surface side, and the said sealing material is accommodated in the said sealing material accommodating part.

  The first case includes an annular convex portion that protrudes outward in the surface direction on the outer side in the surface direction of the first side wall portion and is annular in the surface direction. Is preferably provided with an annular annular recess that is recessed toward the outside in the surface direction and that can be engaged with the annular protrusion, on the inner side in the surface direction of the second side wall portion.

  Moreover, it is preferable that the said collar part has a curved part which curves toward the said circuit board side in the inner edge side.

  A key board having a key switch is disposed on a surface opposite to the one surface in the second case, and a plurality of electronic components are mounted on the one surface of the circuit board. The plurality of electronic components are electronic components having different thicknesses, and the collar portion is disposed to face all or some of the plurality of electronic components having different thicknesses. The sealing material is preferably disposed on the collar portion facing the electronic component having the smallest thickness than other electronic components among the plurality of electronic components.

  ADVANTAGE OF THE INVENTION According to this invention, even if it has the shield case structure which has a 1st case and a 2nd case, the electronic device which can maintain a shield effect suitably can be provided.

FIG. 3 is an external perspective view in a state where the mobile phone 1 is opened. FIG. 6 is an exploded perspective view of members built in the operation unit side body 2. It is a perspective view which shows the shield case S of 1st Embodiment. It is a figure which shows the cross-section of the shield case S of 1st Embodiment, and is the sectional view on the AA line shown in FIG. It is a top view at the time of seeing the dispensing gasket 9 from the 1st surface 70a side in the state which the frame 7 and the cover body 8 are not fitted. It is a figure which shows the cross-section of the shield case S of 2nd Embodiment (corresponding figure of FIG. 4). It is a figure which shows the cross-section of the shield case S of 3rd Embodiment (corresponding figure of FIG. 4).

The best mode for carrying out the present invention will be described below with reference to the drawings.
With reference to FIG. 1, a basic structure of a mobile phone 1 (an example of an electronic device) including the shield case of the present embodiment will be described. FIG. 1 shows an external perspective view of the cellular phone 1 in an opened state.

  As shown in FIG. 1, the mobile phone 1 includes an operation unit side case 2 (housing) as a case and a display unit side case 3. The operation unit side body 2 and the display unit side body 3 are connected so as to be openable and closable via a connecting part 4 having a hinge mechanism. Specifically, the upper end portion of the operation unit side body 2 and the lower end portion of the display unit side body 3 are connected via a connecting portion 4. Thereby, the mobile phone 1 is configured to be able to relatively move the operation unit side body 2 and the display unit side body 3 connected via the hinge mechanism. That is, in the mobile phone 1, the operation unit side body 2 and the display unit side body 3 are opened (open state), and the operation unit side body 2 and the display unit side body 3 are folded. (Closed state). Here, the closed state is a state in which both housings are arranged so as to overlap each other, and the open state is a state in which both housings are arranged so as not to overlap each other.

  The outer surface of the operation unit side body 2 includes a front case 2a and a rear case 2b. The operation unit side body 2 exposes the operation key group 11 and the voice input unit 12 as a microphone to which the voice uttered by the user of the mobile phone 1 is input on the front case 2a side. Composed.

  The operation key group 11 includes a function setting operation key 13 for operating various functions such as various settings, a telephone book function, and a mail function, and an input operation key 14 for inputting a telephone number and characters such as mail. And a determination operation key 15 as an operation member for performing determination in various operations, scrolling in the vertical and horizontal directions, and the like. Each key constituting the operation key group 11 has a predetermined function according to the open / close state of the operation unit side body 2 and the display unit side body 3, various modes, or the type of the activated application. Assigned (key assignment). Then, when the user presses each key, an operation corresponding to the function assigned to each key is executed.

  The voice input unit 12 is disposed on the outer end side opposite to the connection unit 4 side in the longitudinal direction of the operation unit side body 2. That is, the voice input unit 12 is arranged on one outer end side when the mobile phone 1 is in the open state.

  An interface (not shown) for communicating with an external device (for example, a host device) is disposed on one side surface of the operation unit side body 2. A side key to which a predetermined function is assigned and an interface (not shown) through which an external memory is inserted and removed are arranged on the other side surface of the operation unit side body 2. The interface is covered with a cap. Each interface is covered with a cap when not in use.

The outer surface of the display unit side body 3 includes a front panel 3a and a rear case 3b. In the display unit side body 3, a display unit 21 for displaying various kinds of information and an audio output unit 22 as a receiver for outputting the voice of the other party of the call are arranged so as to be exposed to the outside.
The display unit 21 includes a liquid crystal panel, a drive circuit that drives the liquid crystal panel, and a light source unit such as a backlight that emits light from the back side of the liquid crystal panel.

  Next, the internal structure of the operation unit side body 2 will be described with reference to FIG. FIG. 2 is an exploded perspective view of members built in the operation unit side body 2.

  As shown in FIG. 2, the operation unit side body 2 includes a front case 2a, a key structure 40, a key substrate 50, a case body 55, and various electronic devices such as an RF (Radio Frequency) module for a mobile phone. A circuit board 70 including components, a rear case 2b including a battery lid 2c, and a battery 100 are included.

  The front case 2a and the rear case 2b are disposed such that the concave inner surfaces face each other, and are joined so that the outer peripheral edges thereof overlap each other. The key structure 40, the key board 50, the case body 55, and the circuit board 70 are housed between the front case 2a and the rear case 2b so as to be sandwiched therebetween.

  In the front case 2a, key holes 13a, 14a, and 15a are formed on the inner surface of the front case 2a facing the display unit 21 of the display unit side body 3 in a state in which the cellular phone 1 is folded. From each of the key holes 13a, 14a, 15a, the pressing surface of the function setting operation key member 13b constituting the function setting operation key 13, the pressing surface of the input operation key member 14b constituting the input operation key 14, and the determination operation key 15 The pressing surface of the determination operation key member 15b that constitutes is exposed. By pressing the exposed function setting operation key member 13b, the input operation key member 14b, and the determination operation key member 15b so as to depress, the metal dome described later is provided in each corresponding key switch 51, 52, 53. The apex of (saddle-like shape) is pressed and comes into electrical contact with the switch terminal.

  The key structure unit 40 includes an operation member 40A, a key frame 40B as a reinforcing member, and a key sheet 40C as a sheet member.

  The operation member 40A is composed of a plurality of key operation members. Specifically, it is configured by a function setting operation key member 13b, an input operation key member 14b, and a determination operation key member 15b. Each operation key member constituting the operation member 40A is bonded to the key sheet 40C with a key frame 40B described later interposed therebetween. As described above, the pressing surface of each operation key member bonded to the key sheet 40C is disposed so as to be exposed to the outside from each of the key holes 13a, 14a, 15a.

  The key frame 40B is a metallic plate-like member having a plurality of holes 14c. The key frame 40B is a reinforcing member for preventing adverse effects on the circuit board 70 and the like due to the pressing of the input operation key member 14b. The key frame 40B is a conductive member, and also functions as a member for releasing static electricity from the input operation key member 14b. The plurality of holes 14c formed in the key frame 40B are arranged so that convex portions 14d formed in the key sheet 40C described later are fitted. The input operation key member 14b is bonded to the convex portion 14d.

  The key sheet 40C is a flexible sheet-like member made of silicon rubber. As described above, a plurality of convex portions 14d are formed on the key sheet 40C. The plurality of convex portions 14d are formed on the surface of the key sheet 40C on the side where the key frame 40B is disposed. Each of the plurality of convex portions 14d is formed at a position corresponding to a key switch 52 described later.

  The key substrate 50 includes a plurality of key switches 51, 52, and 53 disposed on a first surface 50a that is a surface on the key sheet 40C side. The plurality of key switches 51, 52, 53 are arranged at positions corresponding to the respective operation members 40A. The key switches 51, 52 and 53 arranged on the key substrate 50 have a structure having a metal dome of a metal plate which is curved in a bowl shape and is three-dimensionally formed. The metal dome is configured to be electrically connected to a switch terminal formed on an electric circuit (not shown) printed on the surface of the key substrate 50 when the apex of the bowl-shaped shape is pressed. Is done. A plurality of electrode wirings are formed on the second surface 50 b side of the key substrate 50.

  Various electronic components are mounted (mounted) on the circuit board 70. Of the various electronic components mounted on the circuit board 70, some of the electronic components 80 are covered with a shield case S capable of shielding noise. The electronic component 80 is, for example, a high-frequency circuit component for wireless communication.

The structure of the shield case S in the mobile phone 1 according to the first embodiment will be described in detail with reference to FIGS. FIG. 3 is a perspective view showing the shield case S of the first embodiment. FIG. 4 is a view showing a cross-sectional structure of the shield case S of the first embodiment, and is a cross-sectional view taken along line AA shown in FIG.
As shown in FIGS. 3 and 4, the shield case S is disposed on the first surface (one surface) 70 a of the circuit board 70. The shield case S includes a frame (first case) 7 surrounding the electronic component 80 mounted on the first surface 70 a of the circuit board 70, and a lid (fitting the frame 7 to cover the electronic component 80 ( A second case) 8 and a dispensing gasket (seal material) 9 disposed between the frame body 7 and the lid body 8.

  The frame body 7 includes a side wall part (first side wall part) 71, a collar part 72, an opening part 73, and an annular convex part 74.

  The side wall portion 71 is a portion extending in the first direction D1 and away from the circuit board 70. The “first direction D1” is a direction substantially orthogonal to the circuit board 70. The side wall portion 71 has a substantially rectangular frame shape when the frame body 7 is viewed from the first surface 70 a side in the thickness direction of the circuit board 70, and is formed so as to surround the periphery of the electronic component 80. . The length of the side wall portion 71 in the first direction D1, that is, the height of the side wall portion 71 is formed higher (longer) than the height of the electronic component 80.

The collar portion 72 is a portion that is formed continuously with the end portion of the side wall portion 71 opposite to the circuit board 70 side and extends in the surface direction D2 on the first surface 70a and inside the rectangle. The “surface direction D2” is the surface direction of the first surface 70a and is a direction orthogonal to the first direction D1.
The collar portion 72 has a curved portion 72a that is curved toward the circuit board 70 side (lower side) on the inner edge side thereof.

The opening 73 is an opening-shaped part formed by an edge of the collar 72 opposite to the side wall 71 (the edge of the curved portion 72a).
The electronic component 80 is surrounded by the side wall 71. The electronic component 80 is exposed through the opening 73 when the frame body 7 and the lid body 8 are not fitted.

  The annular convex portion 74 is formed outside the surface direction D2 in the side wall portion 71, protrudes toward the outside of the surface direction D2, and has an annular shape in the surface direction D2. The annular protrusion 74 is formed in an annular shape so as to go around the outer surface of the side wall portion 71 at a position where the height from the first surface 70a is substantially the same.

  The lid 8 will be described. The lid 8 has a main surface portion 81, a side wall portion (second side wall portion) 82, and an annular recess 83.

  The main surface portion 81 is a portion that covers the opening 73 in a fitting state in which the lid body 8 is fitted to the frame body 7 (hereinafter also simply referred to as a fitting state). Specifically, the main surface portion 81 is a portion that covers the collar portion 72 and the opening portion 73 in the fitted state in which the lid body 8 is fitted to the frame body 7. In the fitted state, the main surface part 81 is close to the collar part 72 and the opening part 73 at a position facing the collar part 72 and the opening part 73.

  The side wall portion 82 is formed to extend from the main surface portion 81 to the first surface 70a side (the direction opposite to the first direction D1), and is disposed to face the side wall portion 71 (outer surface) in the fitted state. It is a part.

  The annular recess 83 is formed on the inner side in the surface direction D <b> 2 of the side wall portion 82, is recessed toward the outer side in the surface direction D <b> 2, and has an annular shape that can be engaged with the annular protrusion 74. The annular recess 83 is formed at a position corresponding to the annular protrusion 74 on the inner surface of the side wall portion 82. When the frame body 7 and the lid body 8 are fitted, the annular convex portion 74 and the annular concave portion 83 are fitted.

The dispensing gasket 9 will be described.
The dispensing gasket 9 is disposed between the collar portion 72 and the main surface portion 81 in the fitted state in which the frame body 7 and the lid body 8 are fitted. Specifically, the dispensing gasket 9 includes a surface opposite to the first surface 70 a of the collar portion 72 and a first surface of the main surface portion 81 in the fitted state in which the frame body 7 and the lid body 8 are fitted. Between the first surface 70a side. Further, the dispensing gasket 9 is disposed at a portion of the collar portion 72 excluding the curved portion 72a.

  Here, the dispensing gasket 9 is a coating type conductive gasket based on room temperature curable silicon. For example, a shield gasket using a liquid silicon resin mixed with a highly conductive silver filler. The dispensing gasket 9 is, for example, applied in liquid form and becomes an elastic body after being cured at room temperature.

  For example, the dispensing gasket 9 is disposed on the surface opposite to the first surface 70a of the collar portion 72 by a dispenser (not shown) in a state before the frame body 7 and the lid body 8 are fitted ( Applied). Thereafter, when the frame body 7 and the lid body 8 are fitted together, the surface of the collar portion 72 opposite to the first surface 70a and the surface of the main surface portion 81 on the first surface 70a side are the dispensing gasket. 9 is bonded.

  Since the dispensing gasket 9 has conductivity, it blocks noise from the electronic component 80. Further, the dispensing gasket 9 brings the collar portion 72 and the main surface portion 81 into close contact, and electrically connects the collar portion 72 and the main surface portion 81.

  FIG. 5 is a plan view when the frame body 7 is viewed from the first surface 70 a side in a state where the frame body 7 is not fitted to the lid body 8. As shown in FIG. 5, the dispensing gasket 9 is formed on the collar portion 72 so as to have a substantially rectangular ring shape.

According to the shield case S of the first embodiment, for example, the following effects can be achieved.
In the shield case S of the first embodiment, a conductive dispensing gasket 9 is disposed between the collar portion 72 and the main surface portion 81 in a fitted state in which the lid body 8 is fitted to the frame body 7. Is done.

  Therefore, the dispensing gasket 9 suitably shields noise from the electronic component 80 even when a gap is generated between the frame body 7 and the lid body 8 in a fitted state. be able to. Therefore, the shield case S can shield more suitably without leaking noise from the electronic component 80 to the outside.

Further, in the shield case S of the first embodiment, the frame body 7 protrudes toward the outside of the surface direction D2 on the outer surface in the surface direction D2 of the side wall portion 71, and is annular in the surface direction D2. The lid body 8 is formed in an annular shape that is recessed toward the outside in the surface direction D2 on the inner surface in the surface direction D2 of the side wall portion 82 and that can be fitted to the annular protrusion 74. An annular recess 83 is provided.
Therefore, the shield case S is not only in the fitting state in which the frame body 7 and the lid body 8 are fitted, but also by the portion where the annular convex portion 74 and the annular concave portion 83 are engaged, as well as the dispensing gasket 9. Noise from the electronic component 80 can be shielded.

Moreover, in the shield case S of 1st Embodiment, the collar part has the curved part 72a which curves toward the circuit board 70 side in the inner edge side.
Therefore, the shield case S suppresses the dispensing gasket 9 from being damaged by the curved portion 72a when the arrangement position is shifted to the edge side of the curved portion 72a when the lid body 8 is fitted to the frame body 7, for example. it can.

  Another embodiment of the shield case of the present invention will be described. In the other embodiments, points different from the first embodiment will be mainly described, the same reference numerals are given to the same configurations as those in the first embodiment, and the description will be omitted. The description of the first embodiment is applied as appropriate to points that are not particularly described in the other embodiments.

A shield case according to a second embodiment of the present invention will be described with reference to FIG. FIG. 6 is a diagram showing a cross-sectional structure of the shield case S of the second embodiment (corresponding to FIG. 4).
In the second embodiment, as shown in FIG. 5, the collar portion 72 includes a gasket housing portion 72 b that is recessed on the first surface side. The dispensing gasket 9a is accommodated in the gasket accommodating portion 72b.

  According to the shield case S of the second embodiment, since the dispensing gasket 9a is accommodated in the gasket accommodating portion 72b, for example, when a displacement occurs when the lid 8 is fitted to the frame 7, the dispensing gasket 9a. It is possible to prevent the overall shape of the liquid crystal from being deformed, the dispensing gasket 9 from being displaced from the collar portion 72 and the main surface portion 81, and the like.

Next, the shield case of 3rd Embodiment of this invention is demonstrated, referring FIG. FIG. 7 is a view showing a cross-sectional structure of the shield case S of the third embodiment (corresponding to FIG. 4).
In the third embodiment, as illustrated in FIG. 7, a plurality of electronic components 80 a and 80 b having different thicknesses are mounted on the circuit board 70. Specifically, the electronic component 80a is thinner than the electronic component 80b.

The collar portion 72 includes a first collar portion 75 and a second collar portion 76 having different intervals (distances in the first direction D1) from the main surface portion 81 when the frame body 7 and the lid body 8 are fitted to each other.
The first collar portion 75 is formed at a position facing the upper surface of the electronic component 80a. The second collar portion 76 is formed at a position facing the upper surface of the electronic component 80b. The height of the first collar portion 75 when the first surface 70 a is used as a reference is lower than the height of the second collar portion 76.

  The dispensing gasket 9b is disposed on the first collar portion 75 that faces the electronic component 80a that is thinner than the electronic component (other electronic components) 80b among the electronic components 80a and 80b. Specifically, the dispensing gasket 9b is disposed between the surface of the first collar portion 75 opposite to the first surface 70a and the surface of the main surface portion 81 on the first surface 70a side.

  The dispensing gasket 9b blocks noise from the electronic components 80a and 80b. In addition, the dispensing gasket 9b brings the first collar portion 75 and the main surface portion 81 into close contact, and electrically connects the first collar portion 75 and the main surface portion 81. Furthermore, the dispensing gasket 9b also functions as a spacer that fills the space formed between the first collar portion 75 and the electronic component 80a.

  In addition, a key substrate 50 having a plurality of key switches 51, 52, 53 is disposed on the surface of the lid 8 opposite to the first surface 70a (see FIG. 2).

  According to the shield case S of the third embodiment, the dispensing gasket 9b is disposed on the first collar portion 75 that faces the electronic component 80a that is thinner than the electronic component 80b among the electronic components 80a and 80b. The

  In the conventional shield case, for example, the click feeling when the key switch 52 is pressed is lost, and thus the electronic component having a thinner thickness than the other electronic components in the lid (for example, the electronic component 80b in the third embodiment). It is necessary to take measures such as to dent the part facing the circuit board 70 toward the circuit board 70. According to the shield case S of the third embodiment, the shield case S functions as a spacer in the lid body 8 in which the dispensing gasket 9b fills the space formed between the first collar portion 75 and the electronic component 80a. There is no need to dent a portion facing the electronic component 80b having a thickness smaller than that of other electronic components. Therefore, the degree of freedom of the layout of the electronic components 80a and 80b on the circuit board 70 covered with the shield case S can be improved.

  Further, in the shield case S of the third embodiment, the dispensing gasket 9b is configured such that when the key switch 52 corresponding to the position of the first collar portion 75 and the electronic component 80a in the shield case S is pressed, It functions as a spacer that fills the space formed between the electronic component 80a. Accordingly, it is possible to improve the click feeling when the key switch 52 corresponding to the position of the first collar portion 75 and the electronic component 80a is pressed.

  As mentioned above, although one Embodiment of this invention was described, this invention is not restrict | limited to embodiment mentioned above. For example, in the third embodiment described above, the dispensing gasket 9b is disposed between the main surface portion 81 and the first collar portion 75, but the present invention is not limited to this. For example, the dispensing gasket may be disposed with a different thickness between the main surface portion 81 and the first collar portion 75 and between the main surface portion 81 and the second collar portion 76. Specifically, in the shield case S of the third embodiment, the dispensing gasket 9b is disposed between the first collar portion 75 and the main surface portion 81, and the dispensing is performed between the second collar portion 76 and the main surface portion 81. A dispensing gasket having a thickness different from that of the gasket 9b may be provided.

  In addition, the mobile phone provided with the shield case of the present invention is not a foldable type as in the above-described embodiment, and one case is formed from the state in which the operation unit side case 2 and the display unit side case 3 are overlapped. It may be a sliding type mobile phone that is slid in one direction. Further, it may be a rotary (revolver) mobile phone in which one casing is rotated around an axis line along the overlapping direction of the operation section side casing 2 and the display section side casing 3.

  The shield case according to the present invention can be applied to a shield case in a portable electronic device other than a mobile phone, and can also be applied to a shield case in an electronic device other than a portable electronic device. It can also be applied to shield cases in other devices. Further, the frame body 7, the lid body 8, and the dispensing gasket 9 (9a, 9b) in the above-described embodiment are examples, and may be configured by other shapes, sizes, and materials. In the above-described embodiment, the shield case S has two cases of the frame body 7 (first case) and the lid body 8 (second case), but the present invention is not limited to this. . The shield case of the present invention can be applied to, for example, a shield case having three or more shield cases. In the above-described embodiment, the operation unit side body 2 has been described as the case. However, the display unit side body 3 may be applied as the case.

Examples of portable electronic devices other than mobile phones include PHS (registered trademark: Personal Handyphone System), portable game machines, portable navigation devices, PDAs (Personal Digital Assistants), notebook computers, EL displays or liquid crystal displays equipped with an operation unit. Is mentioned.
Examples of electronic devices other than portable electronic devices include electronic dictionaries, calculators, electronic notebooks, digital cameras, video cameras, and radios.

1 Mobile phone (electronic equipment)
7 Frame (first case)
8 Lid (second case)
9 Dispensing gasket (sealant)
70 circuit board 70a first surface (one surface)
71 side wall (first side wall)
72 collar portion 73 opening portion 74 annular convex portion 80 electronic component 81 main surface portion 82 side wall portion (second side wall portion)
83 Annular recess S Shield case

Claims (5)

A housing, a circuit board disposed inside the housing and mounting one or more electronic components on one surface, and a first circuit board surrounding the one or more electronic components mounted on one surface of the circuit board. A shield case comprising: a case of 1 and a second case fitted to the first case and covering the one or more electronic components;
The first case includes a first side wall portion extending in a direction away from the one surface of the circuit board, and a flange portion formed continuously from the first side wall portion and extending in the surface direction on the one surface. And an opening formed on the inner side in the surface direction of the collar portion,
The second case is disposed so as to extend from the main surface portion to the one surface side of the circuit board in a fitted state in which the second case is fitted to the first case. And having a second side wall disposed opposite to the first side wall,
An electronic device, wherein a conductive sealing material is disposed between the collar portion and the main surface portion in the fitted state. The collar portion includes a sealing material accommodating portion that is recessed on the one surface side,
The electronic device according to claim 1, wherein the sealing material is accommodated in the sealing material accommodating portion. The first case includes an annular convex portion that protrudes toward the outer side in the surface direction on the outer side in the surface direction of the first side wall portion and is annular in the surface direction,
The second case is provided with an annular annular recess that is recessed toward the outside in the surface direction on the inner side of the second side wall portion and engageable with the annular protrusion. The electronic device according to claim 1 or 2.   The electronic device according to claim 1, wherein the collar portion has a curved portion that curves toward the circuit board side on an inner edge side thereof. A key board having a key switch is disposed on a surface opposite to the one surface in the second case,
A plurality of electronic components are mounted on the one surface of the circuit board,
The plurality of electronic components are electronic components having different thicknesses, respectively.
The collar portion is disposed to face all or some of the plurality of electronic components having different thicknesses,
5. The electron according to claim 1, wherein the sealing material is disposed on the collar portion facing the electronic component having the thinnest thickness than the other electronic components among the plurality of electronic components. machine.

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