JP2009265185A - Electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide electronic equipment in which a predetermined module is attached to a circuit board in a stable state. <P>SOLUTION: The electronic equipment is equipped with: the circuit board 70 having a first surface 70a and a second surface 70b; the predetermined module 80; and a flexible printed board 83 electrically connecting the circuit board 70 and the predetermined module 80 to each other. The predetermined module 80 has an engaging pawl 82a on its outer surface, and is attached to the circuit board 70 by making the engaging pawl part 82a engaged with a second surface 70b side at the end of the circuit board 70 in such a state that the flexible printed board 83 is connected to the first surface 70a side of the circuit board 70. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electronic device such as a mobile phone.

  A mobile phone has various functions and is equipped with a module for realizing the functions. For example, a mobile phone generally has a camera function. The camera function is realized by a camera module having a lens and a focus adjustment mechanism. In general, a camera module is configured such that a camera module main body is housed in a camera holder, and is electrically connected to a circuit board via a flexible printed circuit board (hereinafter also referred to as “FPC”).

  In many cases, the camera module is not fixed to the circuit board but is connected to the circuit board only by the flexible printed board and is movable (free) with respect to the circuit board. The reason is as follows. The camera module is generally housed in a concave camera housing portion formed inside the housing in a completed state of the mobile phone. Here, the circuit board is fixed to the housing in a non-movable manner by screwing or the like, and the camera module is housed in the camera housing portion in a substantially non-movable manner. For this reason, if the camera module is attached in a state where it is immovably fixed with respect to the circuit board, the camera module may not be housed in the camera housing portion.

JP 2007-67744 A

  However, the conventional technique has a problem that it is difficult to attach the module in a stable state when attaching the module to the circuit board. For example, when the camera module configured as described above is accommodated in the camera accommodating portion of the housing, the following problems may occur. Specifically, since the camera module is only connected to the circuit board by the FPC so as to be movable, the camera module is not stabilized when the camera module is accommodated in the camera accommodating portion, There is a possibility that the camera module main body and the FPC may be damaged, and the incorporation of the camera module into the camera housing portion of the housing is also poor.

It is also conceivable to fix the camera module at an appropriate position on the circuit board by forming a mounting hole corresponding to the camera holder on the circuit board. However, the strength of the circuit board is reduced by forming the mounting hole. Is concerned.
The above-described problems may occur in electronic devices other than mobile phones or in modules other than camera modules.

  Therefore, an object of the present invention is to provide an electronic device that can attach a predetermined module to a circuit board in a stable state.

  The present invention relates to a circuit board having a first surface and a second surface opposite to the first surface, a predetermined module, and a flexible printed circuit board that electrically connects the circuit board and the predetermined module. The predetermined module includes an engaging claw portion on an outer surface thereof, and the engaging claw portion is connected to an end of the circuit board in a state where the flexible printed circuit board is connected to the first surface side of the circuit board. It is related with the electronic device attached to this circuit board by being engaged with the said 2nd surface side in a part.

  Moreover, it is preferable that the protruding direction of the engaging claw portion and the direction in which the flexible printed circuit board extends from the predetermined module substantially coincide.

  Further, a connector to which the connection end portion of the flexible printed board is inserted and connected is provided on the first surface side of the circuit board, and an insertion port into which the connection end portion of the connector is inserted is The flexible printed circuit board is opened in a direction in which the flexible printed circuit board extends from the predetermined module attached to the circuit board, and the connection end portion of the flexible printed circuit board is in the state where the flexible printed circuit board is folded back. It is preferable that it is inserted in.

  The predetermined module is attached to the circuit board while being biased from the second surface side of the circuit board to the first surface side by an urging force generated in the folded flexible printed circuit board. Is preferred.

  The predetermined module is preferably a camera module.

  Further, it is preferable that the predetermined module includes a module main body and a holder that accommodates the module main body, and the engaging claw portion is provided in the holder.

  According to the present invention, a predetermined module can be attached to a circuit board in a stable state.

The best mode for carrying out the present invention will be described below with reference to the drawings. First, the basic structure of a mobile phone 1 which is an embodiment of the electronic apparatus of the present invention will be described with reference to FIGS.
FIG. 1 is a perspective view showing a mobile phone 1 according to an embodiment of the present invention in an open state. FIG. 2 is an exploded perspective view of members built in the operation unit side body 2 shown in FIG.

  As shown in FIGS. 1 and 2, the mobile phone 1 according to the first embodiment includes an operation unit side body 2 and a display unit side body 3. The operation unit side body 2 and the display unit side body 3 are connected to each other so as to be openable and closable around an opening / closing axis X 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 connection unit 4.

  That is, the mobile phone 1 includes a state in which the operation unit side body 2 and the display unit side body 3 are opened via the connecting unit 4 (open state; see FIG. 1), and the operation unit side body 2 and the display unit. The side housing 3 is configured to be able to be changed to a state (closed state, not shown) that overlaps (folds) each other via the connecting portion 4. Here, the closed state is a state where the two casings 2 and 3 are arranged so as to overlap each other, and the open state is the case where both the casings 2 and 3 do not overlap each other, It is the state arrange | positioned so that the overlapping degree may become small.

  As shown in FIGS. 1 and 2, the outer surface of the operation unit side body 2 includes a front case 21 and a rear case 22. The operation unit side body 2 exposes, on the front case 21 side, the operation key group 11 and a voice input unit 12 as a microphone to which a voice uttered by a user of the mobile phone 1 is input. 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 / closed 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 in the opened state of the mobile phone 1.

  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 front case 30a in the display unit side body 3 is arranged so as to expose a main display unit 34a for displaying various information and a voice output unit 31 as a receiver for outputting the voice of the other party of the call. The

Next, the internal structure of the operation unit side body 2 will be described with reference to FIG.
As shown in FIG. 2, the front case 21 and the rear case 22 are arranged so that their concave inner surfaces face each other, and are joined so that their outer peripheral edges overlap each other. In addition, the key structure 40, the key board 50, the shield case 60, and the main circuit board (circuit board) 70 are built in between the front case 21 and the rear case 22.

  In the front case 21, key holes 13 a, 14 a, and 15 a as openings are formed on the inner surface of the front case 21 that faces the main display 34 a of the display unit side body 3 in the closed state. 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 down the pressing surfaces of the exposed function setting operation key member 13b, the input operation key member 14b, and the determination operation key member 15b, a metal dome (a bowl-like shape) described later provided in each corresponding key switch 51, 52, 53 is provided. The top of the shape is pressed, and comes into contact with the switch terminal to conduct electricity.

  The key substrate 50 is a flexible substrate formed by interposing a wiring between a plurality of insulating layers (insulating films). The key board 50 includes a plurality of key switches 51, 52, and 53 corresponding to the function setting operation key 13, the input operation key 14, and the determination operation key 15 as a key top on the key structure 40 side. The key switches 51, 52, and 53 (described later) have a metal dome that is a three-dimensionally formed metal plate that is curved like a bowl. When the apex of the bowl-like shape is pressed, the metal dome comes into contact with a switch terminal formed on an electric circuit (not shown) printed on the surface of the key substrate 50 so as to be electrically connected. Composed.

The key structure portion 40 is disposed on the key substrate 50 in a stacked manner, and is a sheet in which a pusher capable of pressing a plurality of key switches 51, 52, and 53 and a key top having an operation surface are made of elastic silicon or the like. It is provided and configured.
The key structure 40 is configured by attaching the key tops of the operation key group 11 to the surface of a base sheet made of silicon rubber with an adhesive. The function setting operation key 13, the input operation key 14, and the determination operation key 15 constituting the operation key group 11 in the key structure unit 40 are arranged at positions facing the key switches 51, 52, 53 on the key substrate 50, It arrange | positions so that it may expose from the key holes 13a, 14a, 15a formed in the front case 21. FIG.

  The shield case 60 is a conductive member having a shape in which one wide surface of a thin rectangular parallelepiped is opened. The shield case 60 includes a flat plate portion 61 that serves as a mounting surface for the key substrate 50 and a rib 62 that is formed substantially perpendicular to the opening-side surface of the flat plate portion 61. The rib 62 is formed to be equal to or sufficiently higher than the height of the highest electronic component among the various electronic components mounted on the main 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 in the main circuit board 70. Specifically, the rib 62 is formed so as to be disposed on the reference potential pattern layer 75 in a state where the shield case 60 is placed on the main circuit board 70.

The shield case 60 can be made entirely of metal, or can be made of a skeleton formed of a resin and a conductor film formed on the surface of the skeleton.
In addition, since the key substrate 50 is placed on the flat plate portion 61 in the shield case 60, pressure and deflection due to the key structure portion 40 being pressed are transmitted to the main circuit substrate 70 disposed below the shield case 60. It is hard to be done.

  The shield case 60 is electrically connected to the reference potential pattern layer 75 by bringing the bottom surface of the rib 62 into contact with the reference potential pattern layer 75. The shield case 60 is electrically connected to the reference potential pattern layer 75 to have the same potential as the reference potential pattern layer 75.

  The shield case 60 prevents external noise such as high frequency from acting on various electronic components disposed on the main circuit board 70, and is emitted from an RF (Radio Frequency) circuit, a CPU circuit, a power supply circuit, and the like. The noise is shielded, and it is prevented from acting on other electronic components or a receiving circuit connected to the antenna. Specifically, the bottom surface of the rib 62 in the shield case 60 is disposed on the reference potential pattern layer 75, so that each circuit 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.

  Various electronic parts and circuits (not shown) are arranged on the main 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.

  On the first surface 70a on the shield case 60 side of the main circuit board 70, a reference potential pattern layer 75 constituting a reference potential portion is formed in addition to the various electronic components described above. 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 main circuit board 70.

  A removable battery lid 23 is provided on one end side of the rear case 22. The battery lid 23 is attached to the rear case 22 after storing the battery Q from the outside of the rear case 22. Moreover, the microphone (not shown) of the audio | voice input part 12 which inputs a user's audio | voice is accommodated in the one end side in the rear case 22. FIG.

Next, with reference to FIG. 3 to FIG. 7, a mounting structure between the camera module 80 configured so that the camera module main body 81 is accommodated in the camera holder 82 and the main circuit board 70 will be described in detail.
FIG. 3 is a partial perspective view of the main circuit board 70 to which the camera module 80 is attached as viewed from the first surface 70a side. 4 is a perspective view showing a state in which the connector 71 on the main circuit board 70 and the camera module 80 are to be connected via a flexible printed circuit board (hereinafter also referred to as “FPC”) 83 as viewed from the first surface 70a side. FIG.

  FIG. 5 is a partial perspective view of the main circuit board 70 to which the camera module 80 is attached as viewed from the second surface 70b side. 6A is a perspective view showing the camera module 80 in a state where the flexible printed circuit board 83 is folded, and FIG. 6B is a state in which the flexible printed circuit board 83 is not folded back regarding the camera module 80. It is a perspective view shown by. FIG. 7 is a cross-sectional view taken along line AA shown in FIG.

As shown in FIG. 2, the main circuit board 70 includes a first surface 70 a on the front surface 2 a side (shield case 60 side) of the operation unit side body 2, and a second surface 70 b that is the opposite surface of the first surface 70 a. Have
As shown in FIGS. 3 to 7, at one end portion (end portion on the connecting portion 4 side) 70c of the vertically long main circuit board 70, a holder arrangement portion in which a camera holder 82 containing a camera module main body 81 is disposed. 72 is provided. The holder placement portion 72 is formed such that one end portion 70 c of the main circuit board 70 is recessed into a shape corresponding to the outer shape of the camera holder 82.

The camera module main body 81 is a main body portion of a module having a camera function. For example, a lens unit in which a lens is arranged inside a lens barrel, a lens unit moving mechanism that moves a lens unit to adjust a focus, and a lens It has an image sensor that determines the light of the image.
An FPC 83 that electrically connects the main circuit board 70 and the camera module main body 81 is connected to the camera module main body 81 via a camera substrate 84 described later.

As shown in FIG. 6, the camera holder 82 accommodates and holds the camera module main body 81. The camera module main body 81 accommodated in the camera holder 82 is a camera module 80. The camera holder 82 has a substantially rectangular parallelepiped outer shape as a whole. Inside the camera holder 82, a module housing portion 82b is formed in a shape in which a substantially rectangular parallelepiped outer shape is cut out into a substantially cylindrical shape. The module housing part 82b houses and holds the camera module main body 81. The module housing portion 82b is open to the back surface 2b side of the operation unit side body 2 in a state where the camera holder 82 is attached to the main circuit board 70.
An engaging claw portion 82 a is provided on the outer surface of the camera holder 82. The engaging claw portion 82a is directed from the upper end side (the connecting portion 4 side) of the operation unit side body 2 toward the lower end side of the operation unit side case 2 in a state where the camera holder 82 is attached to the main circuit board 70. Protruding.

  A camera substrate 84 is connected to the camera holder 82 on the side opposite to the opening side of the module housing portion 82b. An FPC 83 is connected to the camera substrate 84. A circuit for controlling the camera module main body 81 is mounted on the camera substrate 84, and the camera module main body 81 and the main circuit board 70 are electrically connected via the FPC 83.

The FPC 83 is a flexible substrate that electrically connects the camera module main body 81 and the main circuit board 70. One end portion side of the FPC 83 is connected to the camera substrate 84, and the other end portion side of the FPC 83 is a connection end portion 83a connected to a connector 71 described later.
As shown in FIG. 6B, the FPC 83 extends from the camera holder 82 in a direction substantially coinciding with the protruding direction of the engaging claw portion 82a when viewed macroscopically. That is, the protruding direction of the engaging claw 82 a from the outer surface of the camera holder 82 and the direction in which the FPC 83 from the camera holder 82 attached to the main circuit board 70 extends substantially coincide. Further, the FPC 83 extends in a direction substantially coincident with the protruding direction of the engaging claw portion 82a, then bends, and again extends in a direction substantially coincident with the protruding direction of the engaging claw portion 82a in the vicinity of the connection end portion 83a. ing.

  As shown in FIGS. 3, 4, and 7, a connector 71 is provided on the first surface 70 a of the main circuit board 70. The connector 71 is provided in the vicinity of the holder placement portion 72, and is connected by inserting the connection end portion 83a of the FPC 83. The insertion port 71a into which the connection end 83a of the connector 71 is inserted opens in the direction in which the FPC 83 extends from the camera holder 82 (that is, the direction from the upper end side to the lower end side of the operation unit side body 2). .

  As shown in FIGS. 3 and 7, the connection end 83 a of the FPC 83 is inserted into the insertion port 71 a of the connector 71 with the FPC 83 folded back. In the folded-back FPC 83, a biasing force (repulsive force) is generated in the folded-back portion 83b in a direction to restore the folded-back state. Therefore, the camera holder 82 is attached to the main circuit board 70 while being biased from the second surface 70b side of the main circuit board 70 to the first surface 70a side by the biasing force.

  In the present embodiment, as shown in FIGS. 3 to 7, the camera holder 82 has the engaging claw portion 82 a as the main circuit board 70 in a state where the FPC 83 is connected to the first surface 70 a side of the main circuit board 70. It is attached to the main circuit board 70 by engaging with the second surface 70b side of the one end portion 70c of the main circuit board 70.

  Specifically, as shown in FIG. 4, the connection end 83a of the unfolded FPC 83 is connected to the connector 71, and then the FPC 83 is folded back as shown in FIGS. 83b is formed to cause the FPC 83 to generate a biasing force in a direction from the second surface 70b side of the main circuit board 70 toward the first surface 70a side. Next, the camera holder 82 is placed on the holder placement portion 72 of the main circuit board 70. Then, the engaging claw portion 82 a of the camera holder 82 is engaged with the second surface 70 b side of the main circuit board 70. In this way, the camera holder 82 is attached to the main circuit board 70.

According to the mobile phone 1 of the present embodiment having the above-described configuration, the following effects are exhibited.
In the mobile phone 1 of the present embodiment, the camera module 80 includes an engaging claw portion 82a on the outer surface, and the engaging claw portion 82a is in a state where the FPC 83 is connected to the first surface 70a side of the main circuit board 70. The main circuit board 70 is attached to the main circuit board 70 by being engaged with the second surface 70 b side of the one end portion 70 c of the main circuit board 70. Therefore, the camera module 80 can be attached to the main circuit board 70 in a movable and stable state by the procedure described above.

  Further, in the mobile phone 1 according to the present embodiment, the protruding direction of the engaging claw portion 82a from the outer surface of the camera holder 82 and the direction in which the FPC 83 from the camera holder 82 extends substantially coincide. Therefore, the main circuit board 70 is sandwiched between the engaging claw portion 82a and the FPC 83 in a stable state, so that the attachment state of the camera holder 82 to the main circuit board 70 is stabilized.

  Further, in the mobile phone 1 of the present embodiment, the insertion port 71a of the connector 71 opens in the direction in which the FPC 83 extends from the camera holder 82, and the connection end 83a of the FPC 83 is inserted with the FPC 83 folded back. It is inserted in the mouth 71a. Therefore, the connection end 83a of the FPC 83 is unlikely to be detached from the connector 71 of the FPC 83, and the camera holder 82 is stably attached to the main circuit board 70.

  In the mobile phone 1 of the present embodiment, the camera holder 82 is urged from the second surface 70b side of the main circuit board 70 to the first surface 70a side by the urging force generated in the folded FPC 83. It is attached to the main circuit board 70. Therefore, the attachment of the camera holder 82 to the main circuit board 70 is extremely stable.

As mentioned above, although one Embodiment of this invention was described, this invention is not restrict | limited to embodiment mentioned above, It can change suitably.
For example, the position where the engaging claw portion 82a of the camera holder 82 is engaged is not particularly limited as long as it is an end portion of the circuit board (main circuit board 70).

The insertion port 71 a of the connector 71 may open in the direction opposite to the direction in which the FPC 83 extends from the camera holder 82.
The connection end 83a of the FPC 83 can be connected to the first surface 70a side of the main circuit board 70 by connection means other than a connector.
The camera holder 82 can also be attached to the main circuit board 70 using the FPC 83 that is not folded back.

The camera module 80 may not have the camera holder 82. In that case, the engaging claw portion 82a may be provided directly on the camera module main body 81.
The predetermined module attached to the circuit board is not limited to the camera module, and may be an appropriate module such as a microphone module, a speaker module, or an infrared module.

In the embodiment, the first surface 70a of the main circuit board 70 is located on the front surface 2a side of the operation unit side body 2, and the second surface 70b of the main circuit board 70 is on the back surface 2b side of the operation unit side body 2. For example, the first surface 70a is positioned on the back surface 2b side of the operation unit side body 2 and the second surface 70b is on the front surface 2a side of the operation unit side body 2. May be located.
In the above-described embodiment, the mounting structure of the camera holder 82 according to the present invention is applied to the main circuit board 70 of the operation unit side body 2. The mounting structure of the camera holder 82 according to the present invention can be applied to various circuit boards in the circuit board and the display unit side body 3.

  In addition, the electronic device of the present invention is not foldable as in the above-described embodiment, and one casing is slid in one direction from the state in which the operation section side casing 2 and the display section side casing 3 are overlapped. It may be a sliding electronic device. Alternatively, a rotary (revolver) electronic device in which one casing is rotated around an axis line along the overlapping direction of the operation unit side casing 2 and the display unit side casing 3 may be used.

The present invention can be applied to portable electronic devices other than cellular phones, and can also be applied to electronic devices other than portable electronic devices. Examples of portable electronic devices other than cellular 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.
Furthermore, examples of electronic devices other than portable electronic devices include, but are not limited to, an electronic dictionary, a calculator, an electronic notebook, a digital camera, a video camera, a radio, and the like.

It is a perspective view which shows the mobile telephone 1 of one Embodiment of this invention in an open state. It is a disassembled perspective view of the member incorporated in the operation part side housing | casing 2 shown in FIG. It is the fragmentary perspective view which looked at the main circuit board 70 with which the camera module 80 was attached from the 1st surface 70a side. FIG. 6 is a perspective view showing a state in which the connector 71 on the main circuit board 70 and the camera module 80 are to be connected via a flexible printed board 83 as viewed from the first surface 70a side. It is the fragmentary perspective view which looked at the main circuit board 70 with which the camera module 80 was attached from the 2nd surface 70b side. (A) is a perspective view showing the camera module 80 in a state where the flexible printed circuit board 83 is folded, and (b) is a perspective view showing the camera module 80 in a state where the flexible printed circuit board 83 is not folded back. It is. It is the sectional view on the AA line shown in FIG.

Explanation of symbols

1 Mobile phone (electronic equipment)
2 Operation unit side case (case)
3 Display unit side body 4 Connection unit 70 Main circuit board (circuit board)
70a First surface 70b Second surface 70c One end (end)
71 connector 71a insertion slot 80 camera module (predetermined module)
81 Camera module body (module body)
82 Camera holder (holder)
82a engaging claw part 83 FPC (flexible printed circuit board)
83a Connection end

Claims (6)

A circuit board having a first surface and a second surface opposite to the first surface;
A given module;
A flexible printed circuit board for electrically connecting the circuit board and the predetermined module;
The predetermined module includes an engaging claw portion on an outer surface thereof, and the engaging claw portion is connected to the first surface side of the circuit board when the engaging claw portion is connected to the end portion of the circuit board. An electronic device attached to the circuit board by being engaged with the second surface side.   The electronic device according to claim 1, wherein a protruding direction of the engaging claw portion and a direction in which the flexible printed circuit board extends from the predetermined module substantially coincide with each other. The first surface side of the circuit board is provided with a connector to which the connection end of the flexible printed circuit board is inserted and connected, and the insertion port into which the connection end of the connector is inserted is The flexible printed circuit board is opened in a direction extending from the predetermined module attached to the circuit board,
The electronic device according to claim 2, wherein the connection end portion of the flexible printed board is inserted into the insertion port in a state where the flexible printed board is folded.   The predetermined module is attached to the circuit board in a state of being biased from the second surface side to the first surface side by the biasing force generated in the folded flexible printed circuit board. The electronic device as described in.   The electronic device according to claim 1, wherein the predetermined module is a camera module. The predetermined module includes a module body and a holder for housing the module body,
The electronic device according to claim 1, wherein the engagement claw portion is provided on the holder.

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