JP2011130041A - Portable electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable electronic apparatus wherein noise, occurring from an electronic component which is mounted on a circuit board and is connected to a flexible substrate having signal lines, can be prevented from being propagated in a housing. <P>SOLUTION: The portable electronic apparatus is equipped with: a circuit board 70 which is disposed in an operation part side housing 2 and has a reference potential pattern layer 75 formed on a first surface 70a; connectors 210 and 220 mounted on the first surface 70a; an FPC part 100 having signal lines connected to the connectors 210 and 220; and a case body 60 disposed on the side of the first surface 70a so as to be electrically connected to the reference potential pattern layer 75. A rib 62 of the case body 60 has a notch 65, and the FPC part 100 is inserted, between the circuit board 70 and the case body 60, via the notch 65 so as to close the notch 65. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a portable electronic device such as a cellular phone.

  A circuit board having a reference potential pattern formed on one surface; an electronic component mounted on one surface of the circuit board; a flexible substrate having a signal line connected to the electronic component; and the one in the circuit board There is known a portable electronic device including a case member disposed on the surface side of the reference potential pattern and electrically connected to the reference potential pattern (see, for example, Patent Document 1).

JP 2008-11220 A

  However, in the mobile phone disclosed in Patent Document 1, since the electronic component connected to the flexible substrate having the signal line is arranged outside the case member, noise generated from the electronic component is generated inside the casing. There was a case to propagate.

  The present invention has been made in view of the above problems, and suppresses propagation of noise generated from an electronic component mounted on a circuit board and connected to a flexible board having a signal line inside the housing. An object is to provide a portable electronic device that can be used.

  In order to solve the above problems, a portable electronic device according to the present invention includes a housing, a circuit board disposed inside the housing, and having a reference potential pattern formed on one surface thereof, and the circuit board. An electronic component mounted on one surface; a flexible substrate having a signal line connected to the electronic component; and the reference potential pattern electrically connected to the one surface of the circuit substrate to connect the electronic A case member having a wall portion disposed so as to surround the component and a plate-like portion disposed opposite to the electronic component and shielding the electronic component, wherein the wall portion has a notch. The flexible substrate is inserted between the circuit board and the case member via the notch so as to close the notch.

  Preferably, the case member is fixed to the circuit board in a state of receiving pressure in the thickness direction of the circuit board, and the flexible board is formed by the notch end portion of the wall portion. The circuit board is brought into contact with the circuit board while being pressed in the thickness direction of the circuit board.

  Preferably, the flexible substrate includes a first layer having the signal line and a second layer stacked on the first layer, and the second layer is an end portion of the notch portion. Abut.

  Preferably, the reference potential pattern is located on a side opposite to the end portion of the cutout of the flexible substrate, and the second layer contacts the end portion of the cutout portion and the reference potential pattern. Touch.

  Preferably, the case member is bent from a first part having the plate-like part and the wall part, a convex part projecting from the reference potential pattern of the circuit board to the first part side, and the convex part. A second portion having an extended portion, and the second layer is in contact with the extended portion.

  Preferably, the extending portion is configured as a portion to be attracted that is attracted by the attracting portion when the second portion is disposed on the circuit board.

  Preferably, at least one of the first facing portion that faces at least one of the convex portion and the extending portion in the first portion and the second facing portion that faces the plate-like portion in the second portion is a protruding portion. The second layer is in contact with the protrusion.

  Preferably, the plate-like part of the first part and the extending part of the second part are arranged to face each other and sandwich the flexible substrate, and the wall part of the first part The convex portions of the second portion are arranged to face each other and sandwich the flexible substrate.

  According to the present invention, there is provided a portable electronic device capable of suppressing noise generated from an electronic component mounted on a circuit board and connected to a flexible substrate having a signal line from being propagated inside the housing. be able to.

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. FIG. 6 is an exploded perspective view of members built in the display unit side body 3. 2 is a partial front view of a key substrate 50 for explaining an FPC unit 100. FIG. It is AA sectional drawing in FIG. (A) It is a perspective view which shows the case body 60, the circuit board 70, and the FPC part 100 in 1st Embodiment. (B) It is a BB sectional view in the state where case body 60 was arranged on circuit board 70 in (a). (A) It is a perspective view which shows the case body 60, the circuit board 70, and the FPC part 100 in 2nd Embodiment. (B) It is a BB sectional view in the state where case body 60 was arranged on circuit board 70 in (a). (A) It is a perspective view which shows the case body 60, the circuit board 70, and the FPC part 100 in the modification of 2nd Embodiment. (B) It is a BB sectional view in the state where case body 60 was arranged on circuit board 70 in (a). It is a figure which shows the structure of the contact part of the FPC part 100 and the reference electric potential part 750 in this embodiment. It is a figure which shows the other structure of the contact part of the FPC part 100 and the reference electric potential part 750 in this embodiment.

  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 as a mobile electronic device 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 body 2 and a display unit side body 3 as a housing. 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 is configured such that an operation key group 11 and a voice input unit 12 to which a voice uttered by a user of the mobile phone 1 is input are exposed on the front case 2a side. .

  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. On the other 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 external memory is inserted and removed are arranged. 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, a front case 3b, a rear case 3c, and a rear panel 3d. In the display unit side body 3, a display unit 21 for displaying various kinds of information and an audio output unit 22 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 and the display unit side body 3 will be described with reference to FIGS. FIG. 2 is an exploded perspective view of members built in the operation unit side body 2. FIG. 3 is an exploded perspective view of members built in the display unit side body 3. FIG. 4 is a partial front view of the key board 50 for explaining the FPC unit 100. 5 is a cross-sectional view taken along the line AA in FIG.

  As shown in FIG. 2, the operation unit side body 2 includes a front case 2a, a key structure 40, a key substrate 50 as a flexible substrate, a case body 60 as a case member, and a reference potential pattern layer. 75, the circuit board 70 on which the first connector 210 is provided, the rear case 2b including the battery lid 2c, the battery 80, and the antenna unit 90.

  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. Further, between the front case 2a and the rear case 2b (inside the operation unit side body 2), a key structure 40, a key substrate 50, a case body 60, a circuit substrate 70, an antenna unit 90, and the like. Is embedded (arranged) so that the

  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, 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.

  As shown in FIGS. 2 and 4, the key board 50 includes a key board body 99 and an FPC portion 100 extending from the key board body 99.

  4 and 5, the key substrate 50 is a flexible substrate having a plurality of signal lines 192a. Specifically, the key substrate 50 is a flexible substrate having a first layer 192 having a plurality of signal lines 192a and a second layer 194 including a reference potential wiring 194a.

  As shown in FIGS. 4 and 5, the key substrate 50 includes a first resin layer 191, a first layer 192 (a layer including the signal line 192a), a second resin layer 193, and a second layer (conductive layer). 194 and a third resin layer 195.

  As shown in FIGS. 4 and 5, the key substrate 50 includes a first region 110 formed on the front end (free end) side of the FPC unit 100 and a portion of the FPC unit 100 that is formed continuously with the first region 110. And a second region 120 formed over the key substrate body 99.

  The first region 110 is a region that does not have the second layer 194 but has the first layer 192. The first region 110 is a region formed by peeling off a second layer 194 in the second region 120 described later.

  The second region 120 is a region where the first layer 192 and the second layer 194 are stacked.

  Here, the reference potential wiring is not limited to a linear shape, and includes a conductive member formed in a layer shape. The reference potential wiring is electrically connected to a reference potential pattern layer 75 as a reference potential pattern formed on the circuit board 70 through a case body 60 described later.

  The key board main body 99 includes a plurality of key switches 51, 52, and 53 disposed on the first surface 50a that is the 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 plurality of key switches 51, 52, 53 are mounted on the second layer 194 in the second region 120 on the side opposite to the first layer 192 side.

  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. The key board body 99 is configured by the second region 120.

  The FPC unit 100 is formed to extend from the key board body 99. The FPC portion 100 is a portion that is narrower than the key board body 99.

  As shown in FIG. 4, the FPC unit 100 includes a part of the second region 120 formed on the key board body 99 side and the first region 110 formed on the free end side.

  The FPC unit 100 includes peeling portions 300 and 300 formed in the second region 120. The peeling portions 300 and 300 are formed by peeling the third resin layer 195 in the second region 120 only by a predetermined region. The peeling portions 300 and 300 are portions where the second layer 194 is exposed.

  A second connector 220 (electronic component) is attached to the free end of the FPC unit 100. The second connector 220 is attached in electrical connection with the plurality of signal lines 192a. The second connector 220 is attached to the same side (the first surface 50 a side) as the key switches 51, 52, 53 and the peeling portions 300, 300 on the key substrate 50. The second connector 220 is attached to the key substrate 50 on the side where the second layer 194 in the first region 110 is peeled off.

  The second connector 200 is connected to the first connector 210 mounted on the circuit board 70. Specifically, the FPC unit 100 is inserted into a notch 65 described later, and the second connector 220 disposed inside the case body 60 is connected to the first connector 210 provided on the circuit board 70.

  Here, the connection state between the first connector 210 and the second connector 220 and the shape of the FPC unit 100 will be described in detail later.

  As shown in FIG. 2, the case body 60 is a conductive member having a shape in which one wide surface of a thin rectangular parallelepiped is opened. The case body 60 includes a flat plate portion 61 (plate-shaped portion) disposed to face the circuit board 70 and ribs 62 (wall portions) formed substantially perpendicular to the surface of the flat plate portion 61 on the circuit board 70 side. . The rib 62 is formed to be equal to or sufficiently higher than the height of the tallest electronic component among the various electronic components mounted on the circuit board 70. The ribs 62 are formed on the periphery and inside of the flat plate portion 61 so as to correspond to the reference potential pattern layer 75 constituting the reference potential portion. Specifically, the rib 62 is formed so as to be disposed on the reference potential pattern layer 75 in a state where the case body 60 is placed on the circuit board 70.

  The rib 62 is formed so as to surround a first connector 210 (electronic component) provided on the circuit board 70 described later in a state where the case body 60 is placed on the circuit board 70. In the present embodiment, the flat plate portion 61 and the rib 62 in the case body 60 surround the first connector 210 mounted on the circuit board 70 together with the circuit board 70.

  The case body 60 may be formed of a metal, or may be formed of a conductor film on the surface of a skeleton formed of a resin.

  The case body 60 is disposed on the first surface 70 a side of the circuit board 70 such that the bottom surface (end portion) of the rib 62 is placed on the reference potential pattern layer 75 and is electrically connected to the reference potential pattern layer 75. Is done. The case body 60 is electrically connected to the reference potential pattern layer 75 by contacting the bottom surface of the rib with the reference potential pattern layer 75. The case body 60 is electrically connected to the reference potential pattern layer 75 and has the same potential as the reference potential pattern layer 75. That is, the case body 60 functions as a shield case. The case body 60 serves as a shield case to suppress external noise such as high frequency from acting on various electronic components disposed on the circuit board 70, and to emit from an RF (Radio Frequency) circuit, a CPU circuit, a power supply circuit, and the like. By blocking (propagating) noise, it is prevented from acting on other electronic components or a receiving circuit connected to an antenna. Specifically, the bottom surface of the rib 62 in the case body 60 is disposed on the reference potential pattern layer 75, so that each circuit described later is surrounded by the rib 62 and covered with a part of the flat plate portion 61. The rib 62 functions as a partition wall in each circuit, and shields each circuit together with a part of the flat plate portion 61.

  In the present embodiment, the case body 60 suppresses noise generated between the case body 60 and the circuit board 70 from being propagated to the outside of the case body 60. Specifically, in the case body 60, noise generated in the first region 210 and the second connector 220 disposed on the circuit board 70 and the first region 110 in the FPC unit 100 is propagated to the outside of the case body 60. To suppress that.

  As shown in FIGS. 2 and 6A, a notch 65 is formed in the rib 62 of the case body 60. The notch 65 has a surface 65 a (end portion) parallel to the flat plate portion 61. The notch 65 is formed in a size and shape that allows the FPC unit 100 and the second connector 220 to be inserted. Here, the notch 65 is preferably as small as possible.

  The notch 65 is preferably as far as possible from an electronic component or the like that generates a lot of noise among electronic components and circuits mounted on a circuit board 70 described later.

  As shown in FIG. 2, the key board main body 99 of the key board 50 is disposed on the flat plate portion 61 of the case body 60. The FPC portion 100 extending from the key board main body 99 is inserted into the notch 65. The second connector 220 attached to the tip of the FPC unit 100 inserted through the notch 65 is held in a state of being connected to the first connector 210.

  As shown in FIG. 2, various electronic components and circuits (not shown) including a signal processing unit that processes signals transmitted and received by the antenna unit 90 are arranged on the circuit board 70. Various electronic components form a plurality of circuit blocks by a predetermined combination. For example, various circuit blocks including an RF (Radio Frequency) circuit, a power supply circuit, and the like are formed.

  In addition to the various electronic components described above, a reference potential pattern layer 75 constituting a reference potential portion is formed on the first surface 70a of the circuit board 70 on the case body 60 side. The reference potential pattern layer 75 is formed so as to partition each circuit block described above. The reference potential pattern layer 75 is formed by printing a conductive member in a predetermined pattern on the surface of the first surface 70a of the circuit board 70.

  A first connector 210 is provided on the first surface 70 a of the circuit board 70. As described above, the second connector 220 attached to the tip of the FPC unit 100 is connected to the first connector 210.

  The antenna unit 90 is configured by arranging an antenna element having a predetermined shape on a base. The antenna unit 90 is disposed on the end side opposite to the connecting unit 4 side in the mobile phone 1. The antenna element of the antenna unit 90 is formed of a strip-shaped sheet metal. The antenna unit 90 is supplied with power from the circuit board 70 via a power supply terminal (not shown). As a result, the antenna element is fed from the circuit board 70 via the feed terminal and is connected to the RF module and the like of the circuit board 70.

  A detachable battery lid 2c is provided on one end side (in FIG. 2) of the rear case 2b. After the battery 80 is stored from the outside of the rear case 2b, the battery case 2b is attached to the rear case 2b. In addition, a voice input unit 12 (not shown) that inputs a user's voice is accommodated at one end of the rear case 2b.

  As shown in FIG. 3, the display unit side body 3 includes a front panel 3a, an audio output unit 22, a front case 3b, a display unit 21, a printed circuit board 85 to which the display unit 21 is connected, and a rear case. 3c and a rear panel 3d.

  The display unit side body 3 includes a front panel 3a, a front case 3b, a display unit 21, a printed circuit board 85, a rear case 3c, and a rear panel 3d that are stacked. Specifically, the front case 3b and the rear case 3c are arranged so that the inner surfaces of the concave shapes face each other, and are joined so that the outer peripheral edges thereof overlap each other.

  A printed circuit board 85 to which the display unit 21 is connected is sandwiched between the front case 3b and the rear case 3c. A speaker connected to an amplifier (not shown) is connected to the printed board 85.

  Next, the portable electronic device according to the first embodiment of the present invention will be described with reference to FIGS. 6 (a) and 6 (b). FIG. 6A is a perspective view showing the case body 60, the circuit board 70, and the FPC unit 100 in the first embodiment. FIG. 6B is a cross-sectional view taken along the line BB in a state where the case body 60 is disposed on the circuit board 70 in FIG.

  As shown in FIG. 6B, the FPC unit 100 is inserted between the case body 60 and the circuit board 70 through a notch 65 formed in the rib 62 of the case body 60. The second region 120 in the FPC unit 100 is inserted into the notch 65. A part of the second region 120 is disposed in contact with the end portion 65 a of the notch 65. The case body 60 and the circuit board 70 are fixed with screws or the like when attached to each other. Accordingly, the case body 60 and the circuit board 70 are fixed in a state where pressure is applied in the thickness direction of the circuit board 70, and the FPC unit 100 is in pressure contact with the end portion 65 a of the notch 65 and the reference potential pattern.

  The second connector 220 attached to the tip of the FPC unit 100 is disposed in a state of being connected to the first connector 210 provided on the circuit board 70.

  That is, in the mobile phone 1, the first connector 210 and the second connector 220 (connected state) and the first region 110 from which the second layer 194 is peeled are disposed between the case body 60 and the circuit board 70. The noise generated from the first connector 210 and the second connector 220 and the first region 110 (first layer 192, signal line 192a) can be prevented from leaking out of the case body 60. In the mobile phone 1, noise generated from the first connector 210 and the second connector 220 and the first region 110 (first layer 192, signal line 192 a) leaks and propagates to the inside of the operation unit side body 2. Can be suppressed.

  Next, a portable electronic device according to a second embodiment of the present invention will be described with reference to FIGS. 7 (a) and 7 (b). FIG. 7A is a perspective view showing the case body 60, the circuit board 70, and the FPC unit 100 in the second embodiment. FIG. 7B is a cross-sectional view taken along the line B-B in a state where the case body 60 is disposed on the circuit board 70 in FIG. Below, only a different part from said 1st Embodiment is demonstrated, and others are omitted.

  As shown in FIG. 7A, in the second embodiment, the case body 60 includes a first case 601 as a first part and a second case 602 as a second part.

  The first case 601 includes a flat plate portion 61 (plate-shaped portion) disposed to face the circuit board 70 and ribs 62 (wall portions) formed substantially perpendicular to the surface of the flat plate portion 61 on the circuit board 70 side. Have. The second case 602 includes a frame portion 620 (convex portion) that protrudes from the reference potential pattern layer 75 toward the first case 601 and an extending portion 621 that is bent from the frame portion 620. The flat plate portion 61 in the first case 601 and the extending portion 621 of the frame portion 620 in the second case 602 are disposed to face each other. Further, the rib 62 in the first case 601 and the frame portion 620 in the second case 602 are disposed to face each other. The first case 601 is mounted so as to cover the second case 602.

  As shown in FIG. 7A, notches 65 are formed in the ribs 62 in the first case body 601. The notch 65 is formed in the rib 62 from the flat plate portion 61 to the bottom surface of the rib 62. The notch 65 has a surface 65 a (end portion) parallel to the flat plate portion 61.

  As shown in FIG. 7B, the FPC unit 100 is inserted between the case body 60 and the circuit board 70 through notches 65 formed in the ribs 62 of the case body 60. The second region 120 in the FPC unit 100 is inserted into the notch 65. The second region 120 in the FPC unit 100 is sandwiched between the flat plate part 61 of the first case and the extending part 621 of the second case 602.

  That is, in the mobile phone 1, since the second region 120 in the FPC unit 100 is sandwiched between the flat plate part 61 of the first case and the extending part 621 of the second case 602, the first connector 210 and the second connector 220. In addition, noise generated from the first region 110 (first layer 192, signal line 192a) can be prevented from leaking out of the case body 60. In the mobile phone 1, noise generated from the first connector 210 and the second connector 220 and the first region 110 (first layer 192, signal line 192 a) leaks and propagates to the inside of the operation unit side body 2. Can be suppressed.

  As illustrated in FIG. 7B, a protruding portion 622 is formed on the extending portion 621 of the frame portion 602. The protruding portion 622 protrudes toward the first case 601 similarly to the frame portion 620. The projecting portion 622 is formed in a part of the second region 120 in the FPC portion 100 and comes into contact with the peeling portion 300 where the second layer 194 is exposed, whereby the shielding performance of the case body 60 is improved.

  Here, in the second embodiment, the frame portion 602 is formed in a substantially rectangular shape, and a wide portion 621a is formed in a portion corresponding to a rectangular corner in the extending portion 621. The wide part 621a is configured as an adsorbed part that is adsorbed by an unillustrated adsorbing part (for example, an adsorbing nozzle of a manufacturing machine) when the frame part 602 is disposed on the circuit board 70.

  By associating the location where the notch 65 is provided in the first case 601 with the location where the wide portion 621a is provided, the FPC portion 100 contacts the wide portion 621a when the FPC portion 100 is inserted through the notch 65. By doing so, a large contact area between the FPC portion 100 and the frame portion 602 can be secured, and the shielding performance of the case body 60 is improved.

  Next, with reference to FIG. 8A and FIG. 8B, a portable electronic device according to a modification of the second embodiment of the present invention will be described. FIG. 8A is a perspective view showing the case body 60, the circuit board 70, and the FPC unit 100 in a modified example of the second embodiment. FIG. 8B is a cross-sectional view taken along the line B-B in the state where the case body 60 is disposed on the circuit board 70 in FIG. In the following, only the parts different from the first embodiment and the second embodiment will be described, and the others will be omitted.

  As shown in FIG. 8A, in this modification, the shape of the notch 65 formed in the rib 62 of the first case 601 is different from that in the second embodiment described above. The notch 65 is formed in the rib 62 by a predetermined height.

  As shown in FIG. 8B, the FPC unit 100 is inserted between the case body 60 and the circuit board 70 through a notch 65 formed in the rib 62 of the case body 60. The second region 120 in the FPC unit 100 is inserted into the notch 65. The second region 120 in the FPC unit 100 is sandwiched between the flat plate part 61 of the first case and the extending part 621 of the second case 602. Further, the second region 120 in the FPC portion 100 is sandwiched between the rib 62 of the first case and the frame portion 620 of the second case 602.

  That is, in the mobile phone 1, the second region 120 in the FPC unit 100 is sandwiched between the flat plate portion 61 of the first case and the extending portion 621 of the second case 602, and the rib 62 of the first case and the second case Since noise is generated between the first connector 210 and the second connector 220 and the first region 110 (the first layer 192 and the signal line 192a), the noise leaks out of the case body 60. Can be suppressed. Further, the movement of the FPC unit 100 in the direction along the first surface 70a of the circuit board 70 is suppressed, the connection between the connector 210 and the connector 220 can be secured, and the connector 210 and the connector 220 can be prevented from coming off. .

  Next, referring to FIGS. 9 and 10, the FPC unit 100 and the reference potential unit 750 (the reference potential pattern layer 75 or the reference potential pattern layer in the modification example of the first embodiment, the second embodiment, and the second embodiment described above. The structure of the contact portion with the portion having the same potential as 75 will be described.

  As shown in FIG. 9, the reference potential portion 750 is the reference potential pattern layer 75 in the first embodiment, and is an extended portion 621 formed in the frame portion 620 in the second embodiment. In the modification of the form, the frame portion 620 or the extending portion 621 is used.

  The reference potential portion 750 is provided with a protrusion 751. When the protrusion 751 is provided on the reference potential pattern layer 75, the protrusion 751 is formed of a conductive member such as solder or a gasket. When the protruding portion 751 is provided on the frame portion 620 or the extending portion 621, the protruding portion 751 may be made of the same material as the frame portion 620, or may be formed of solder or a gasket. When the protruding portion is formed of a gasket, the gasket is an elastic member having elasticity, so that the FPC portion 100 can be prevented from being damaged.

  The projecting portion 751 abuts on the peeling portion 300 in the FPC portion 100 described above, and further abuts on the rib 62 of the case body 60, whereby the shielding performance of the case body 60 is improved. In addition, noise generated from the FPC unit 100 located outside the case body 60 can be reduced.

  Moreover, the above-mentioned contact part can also be comprised as shown in FIG. FIG. 10 is a diagram illustrating another structure of a contact portion between the FPC unit 100 and the reference potential unit 750 in the present embodiment. As shown in FIG. 10, an extending portion 125 extending in the same direction as the direction in which the reference potential portion 750 is formed is formed at a location where the FPC portion 100 contacts the reference potential portion 750. The extending part 125 has a peeling part 300. A cutout 752 is formed in the reference potential portion 750, and the extending portion 125 of the FPC portion 100 is inserted. A protruding portion 753 is also provided on the side where the extending portion 125 is inserted, and comes into contact with the peeling portion 300 in the FPC portion 100.

  By configuring the contact portion as described above, electrical connection between the FPC unit 100 and the reference potential unit 750 is ensured, and noise generated from the FPC unit 100 can be prevented from being transmitted to the outside of the case body 60. The shielding property of the case body 60 is improved. Further, since the extended portion 125 in the FPC unit 100 is inserted into the notch 752 of the reference potential unit 750, the movement of the FPC unit 100 is suppressed, and the connection between the connector 210 and the connector 220 is secured. 220 can be prevented from coming off.

  As mentioned above, although preferred embodiment was described, this invention can be implemented with a various form, without being limited to embodiment mentioned above. For example, in the present embodiment, the mobile phone 1 is described as an electronic device. However, the present invention is not limited to this, and is not limited to this. A PHS (registered trademark), a personal digital assistant (PDA), a portable navigation device, and a laptop computer. Etc.

  Further, in the present embodiment, the mobile phone 1 that can be folded by the connecting portion 4 is described. However, it is not such a foldable type, and the operation unit side body 2 and the display unit side body 3 are overlapped. One of the cases is slid in one direction from the closed state, and one case is rotated around an axis along the overlapping direction of the operation unit side case 2 and the display unit side case 3 A rotation (turn) type, or a type (straight type) in which the operation unit side body 2 and the display unit side body 3 are arranged in one housing and do not have a connecting portion may be used. The mobile phone 1 may be a so-called biaxial hinge type that can be opened and closed and rotated.

In the present embodiment, the case member 60 and the circuit board 70 are provided in the operation unit side body 2, but are not limited thereto, and may be provided in the display unit side body 3.
In the present embodiment, the first connector 210 and the second connector 220 connected to each other are described as electronic components. However, other electronic components may be used as long as they are connected to signal lines. Good.

  In the present embodiment, the structure shown in FIG. 9 or FIG. 10 is described for the structure of the contact portion between the FPC unit 100 and the reference potential unit 750, but the present invention is not limited to this. For example, when the case body 60 has the structure shown in FIG. 6, the case body 60 and the circuit board 70 are generally fixed by screws. Therefore, screw holes are formed at positions corresponding to the protruding portions 751 and positions corresponding to the peeling portions 300 of the FPC portion 100 in the reference potential portion 750 (reference potential pattern 75) shown in FIG. 9, and screws are screwed into the screw holes. The case body 60 and the circuit board 70 may be fixed together. Thereby, the shielding performance of the case body 60 can be improved, and the position of the FPC unit 100 on the circuit board 70 can be prevented from being shifted.

  Further, in the present embodiment, in the case body 60 having the structure shown in FIG. 7 or FIG. 8, the portion of the rib 61 of the first case 601 that faces the protruding portion 751 provided on the frame portion 620 of the second case 602 is Although it is flat, the present invention is not limited to this, and for example, a fitted portion or a engaged portion in which the protruding portion 751 is fitted or engaged with the rib 61 may be formed.

  In this embodiment, the protrusion 751 and the peeling portion 300 are in contact with each other in FIG. 9 or FIG. 10, but the present invention is not limited to this, and noise generated from the connectors 210 and 220 can be shielded. If it is a structure, the 1st resin layer 191 or the 3rd resin layer 195 of the FPC part 100, and the peeling part 300 may contact | abut.

1 Mobile phone 2 Operation unit side case (case)
3 Display unit side housing 50 Key board 60 Case body (case member)
61 Flat plate (plate)
62 Ribs (walls)
65 Notch 70 Circuit board 70a First surface (one surface)
75 Reference potential pattern layer 90 Antenna portion 99 Key substrate body 100 FPC portion (flexible substrate)
110 First region 120 Second region 192 First layer 194 Second layer 192a Signal line 210 First connector (electronic component)
220 Second connector (electronic component)
300 Peeling part 601 1st case (1st part)
602 Second Case (Part 2)
620 Frame (convex)
621 Extension part 621a Wide part (adsorption part)
750 Reference potential part 751 Protruding part

Claims (8)

A housing,
A circuit board disposed inside the housing and having a reference potential pattern formed on one surface;
An electronic component mounted on the one surface of the circuit board;
A flexible substrate having a signal line connected to the electronic component;
The one surface of the circuit board has a wall portion that is electrically connected to the reference potential pattern and is disposed so as to surround the electronic component, and a plate-shaped portion that is disposed to face the electronic component. And a case member that shields the electronic component,
The wall has a notch that forms a notch;
The portable electronic device, wherein the flexible substrate is inserted between the circuit board and the case member via the notch so as to close the notch. The case member is fixed to the circuit board in a state of receiving pressure in the thickness direction of the circuit board,
2. The portable electronic device according to claim 1, wherein the flexible substrate is in contact with the circuit board while being pressed in a thickness direction of the circuit board by an end portion of the notch of the wall portion. machine. The flexible substrate has a first layer having the signal line and a second layer stacked on the first layer,
The portable electronic device according to claim 1, wherein the second layer is in contact with an end of the notch. The reference potential pattern is located on the opposite side of the cutout end of the flexible substrate,
The portable electronic device according to claim 3, wherein the second layer is in contact with an end of the notch and the reference potential pattern. The case member includes a first part having the plate-like part and the wall part, a convex part protruding from the reference potential pattern of the circuit board toward the first part side, and an extended part bent from the convex part. And a second part having
The portable electronic device according to claim 3, wherein the second layer is in contact with the extended portion.   6. The portable electronic device according to claim 5, wherein the extending portion is configured as a portion to be attracted by the attracting portion when the second portion is disposed on the circuit board. In the first part, at least one of the first opposing part opposing the at least one of the convex part and the extending part and the second opposing part opposing the plate-like part in the second part has a protruding part,
The portable electronic device according to claim 5, wherein the second layer is in contact with the protruding portion. The plate-like part of the first part and the extending part of the second part are arranged facing each other and sandwich the flexible substrate,
The wall part of the first part and the convex part of the second part are arranged to face each other and sandwich the flexible substrate. The portable electronic device according to Item.