JP2007312032A - Mobile electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide mobile electronic equipment capable of taking sufficient countermeasures for static electricity even a high-function camera is mounted while suppressing an increase in size of a case. <P>SOLUTION: The mobile electronic equipment has both cases 12 and 13 rotatably coupled together by pivotally supporting a projection portion 14 projecting from the first case 12 on hinge bearings 13a and 13b of the second case 13; and a camera 29 and a speaker holder 32 are disposed at the projection portion 14, and a camera substrate 34, a display 16, and a main substrate 19 are disposed in the first case 12. The main substrate 19 has a ground to be connected to a cable 28a disposed in the first case 12 from in the second case 13 through the hinge bearings, and the camera substrate 34 has a ground to be connected to a cable 28b disposed in the first case 12 from in the second case 13 through the hinge bearings. The speaker holder 32 has conductivity and is connected to the respective grounds of the main substrate 19 and camera substrate 34. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a portable electronic device, and more particularly to a portable electronic device in which two housings are swingably connected via a hinge structure.

  Mobile electronic devices such as mobile phones and PDAs (Personal Digital Assistants) typically have a tendency to increase the size of the display in order to display more information on the display. The mainstream is a form that improves the operability of the equipment by dividing. In particular, a so-called folding type in which two housings are swingably connected via a hinge structure is used particularly for a mobile phone. In recent years, mobile phones have been developed to have multiple functions by incorporating cameras and mobile functions.

Further, in a mobile phone, in order to eliminate the influence of static electricity from the outside, the static electricity is guided to the ground (G) of the substrate by providing a specific “static electricity path”.
As such a portable electronic device, for example, an “electronic device” (see Patent Document 1) is known.
JP 2005-124127 A

As described above, it is necessary to consider the influence of static electricity from the outside as the multifunctional and high-functional devices are mounted. On the other hand, there is a problem that the size of a housing that is increasing in size with increasing functionality must be reduced. In particular, a high-performance camera needs sufficient countermeasures against static electricity, but its size as a device is hard to ignore.
An object of the present invention is to provide a portable electronic device that can sufficiently take countermeasures against static electricity even when a high-performance camera is mounted while suppressing an increase in size of a housing.

  In order to achieve the above object, a portable electronic device according to the present invention includes a pair of housings, and a pair of protrusions protruding from one housing are provided apart from the edge of the other housing. A portable electronic device that is pivotally supported by a hinge bearing and rotatably connects the one housing and the other housing to each other, wherein the convex portion includes a camera and a holder to which the camera is attached. A camera board for transmitting / receiving signals to / from the camera, a display, and a main board for supplying signals to the display are disposed inside the one casing, and the main board is disposed in the other casing. A ground that is electrically connected to a first cable disposed inside the one casing via the hinge bearing, and the camera board is inserted from the other casing via the hinge bearing. Arranged inside the one casing Have grounds to the second cable and electrically, the holder has conductivity, and characterized in that it is connected the main board of the ground and the ground electrically the camera substrate.

Further, in the present invention, the camera is arranged such that at least a direction that does not coincide with the protruding direction of the convex portion is an imaging direction, and the camera substrate is arranged on the protruding direction side of the convex portion with respect to the camera, It is preferable that a connector to which the second cable is connected is provided on a surface of the camera substrate that does not face the camera.
In addition, the present invention includes a sheet metal member that has a first contact portion that contacts the holder at one end and a second contact portion that contacts the camera substrate at the other end, and electrically connects the holder and the camera substrate. It is preferable to be characterized by this.

  Further, according to the present invention, a related functional part of the camera is arranged between the camera substrate and the camera, and a first contact portion that makes contact with the holder has one end as a second contact point that makes contact with the camera substrate. A sheet metal member that has an engaging portion that engages with the related functional component and that engages with the related functional component at the engaging portion and that electrically connects the holder and the camera substrate. It is preferable to comprise.

  According to the present invention, countermeasures against static electricity can be sufficiently taken even when a high-performance camera is mounted while suppressing an increase in the size of a housing in a portable electronic device.

The best mode for carrying out the present invention will be described below with reference to the drawings.
FIG. 1 is a side view of a folding-type mobile phone according to an embodiment of the present invention. FIG. 2 is a perspective view of the cellular phone of FIG. 1 in a closed state. FIG. 3 is a perspective view of the cellular phone shown in FIG. 1 in an opened state.
As shown in FIG. 1, a mobile phone 10 which is a mobile electronic device is configured by connecting two housings, a first housing 12 and a second housing 13 through a hinge structure 11 so as to be swingable. As shown in FIG. 2, the first housing 12 and the second housing 13 can be folded around the hinge structure 11. On the outer surface of the first housing 12, a camera window 12a in which a lens surface of a camera 29 described later is located is provided.

  As shown in FIG. 3, the hinge structure 11 is projected in a direction toward the second housing 13 (display viewing direction perpendicular to the display 16) when folded from the first housing 12 and closed. The hollow convex portion 14 is configured to be housed in a recess 15 formed by cutting out substantially the center of the edge of the second housing 13. Further, a pair of hinge bearings 13 a and 13 b are provided on both sides of the recess 15 of the second housing 13, and the hinge bearings 13 a and 13 b are provided on the convex portion 14 in the short direction of the first housing 12. The first casing 12 is pivotally supported by the second casing 13 so as to be pivotably assembled to hinge parts 14 a and 14 b (see FIG. 11) provided on both side surfaces.

In addition, each pair of the hinge bearing 13a and the hinge part 14a, and the hinge bearing 13b and the hinge part 14b has one (a pair of 13a and 14a in this example) for maintaining the open state and the closed state of each other's casing. A biasing means for the rotation direction is incorporated, and the other (a set of 13b and 14b in this example) is formed in a cylindrical shape inside, and a cable 28a connecting the inside of the first housing 12 and the inside of the second housing 13; 28b is inserted.
In the illustrated example, the first housing 12 includes at least the display 16, the camera 29, the display main board 19, and the camera board 34.

  FIG. 4 is an exploded perspective view of the mobile phone of the present invention. As shown in FIG. 4, the first housing 12 includes a lower case 17 to which a main display (display) 16 is attached, a reinforcing sheet metal 18 attached to the back surface of the display 16 for reinforcement and anti-static measures, and a main substrate. 19, an upper case 22 to which a sub display holder 21 holding the sub display 20 is mounted, and a decorative panel (decorative plate) 23, are assembled by stacking these members in the order described.

A device for driving the main display 16 and the like (not shown) are mounted on the main substrate 19, and the display surface of the sub display 20 is exposed on the decorative panel 23 attached to the outer surface of the upper case 22. A camera lens cover 23a made of a transparent member such as acrylic resin is attached.
The second housing 13 includes a lower case 24 and an upper case 25, and a lower circuit board (not shown) that is sandwiched between these and mounted with operation keys (not shown). These members are assembled in the order described. Further, after a driving battery (not shown) for supplying power to the lower circuit board is mounted on the battery storage portion provided on the outer surface of the lower case 24, the battery storage portion 26 covers the battery storage portion.

  FIG. 5 is a perspective view showing the internal structure of one housing of the mobile phone. As shown in FIG. 5, a driving circuit for the display 16 and a first cable 28a are mainly connected on the reinforcing sheet metal 18 of the first housing 12 with the decorative panel 23 and the upper case 22 removed. A main board 19 on which an LCD connector terminal 27 for conducting power supply from the second housing 13 and conducting drawing signals, audio signals, and the like is mounted, and a camera 29 and its camera board are provided separately from the main board 19. In addition, a camera module 24 in which a speaker 31 and the like to which audio signals are supplied from the main board 19 is arranged adjacent to the main board 19. In particular, the camera module 24 is incorporated in a region where the convex portion 14 formed in the lower case 17 is provided so that at least a part of the camera substrate and the camera enters the convex portion 14.

  The first cable 28a passes from the circuit board in the second housing 13 via the hinge part 14b and under the camera module 24, and passes through the gap between the main board 19 and the camera module 24. The main board 19 and the circuit board on the second housing 13 side are connected and connected by a plurality of lines. At that time, the camera board 34 is not electrically connected. The plurality of lines include a ground (reference potential) line, and a ground line pattern is formed on the main substrate 19 so that the reference potential is supplied to be equal to the circuit board on the second housing 13 side. It will be. The reinforcing sheet metal 18 is maintained at a reference potential by contacting a ground pattern provided on the surface of the main board facing the reinforcing sheet metal.

  FIG. 6 is an exploded perspective view of the camera module. As shown in FIG. 6, the camera module 24 includes a camera 29 and a camera base 30 mounted on the bottom surface of the camera 29. In the illustrated example, the camera module 24 is formed in a speaker holder 32 in which a speaker 31 is incorporated. The camera 29 is incorporated in and integrated with the camera holder portion 32a, and is incorporated into a space continuous with the internal space of the first housing 12 in the convex portion 14 formed in the lower case 17. The speaker holder 32 fixes the camera 29 and the speaker 31 and is shielded by a metal coating on the surface.

  The camera base 30 has a camera-related functional part (a non-conductive macro holder to which a macro knob D described later is slidably attached) 33 and a camera substrate 34 stacked in order from the bottom side of the camera 29. Is. The macro holder 33 is provided with a hinge-side ground metal plate 35 for preventing static electricity, and the camera substrate 34 is provided with a camera substrate 34 for preventing static electricity, a tab 36 and a macro switch 37.

  A rail 33b is formed on the macro holder 33, and a macro knob D (see FIG. 14) on which a pusher and an engaging portion are formed is slidably attached to the rail portion 33b. The camera 29 also includes a lever 29a for changing the focal length of the lens. When the macro knob D is slid, the macro switch on the camera board 34 is moved while the lever 29a is moved by the engaging portion to change the focal length. Press 37 with a pusher. The signal generated by this pressing is transmitted to the control unit (not shown) on the lower circuit board via the cable 28b, and the input signal from the camera is switched between the standard shooting mode and the macro (close-up shooting) mode on the software. It can be detected.

  FIG. 7 is a perspective view for explaining a state in which the hinge-side ground metal plate 35 is attached to the camera base 30. FIG. 8 is a perspective view showing the hinge-side ground metal plate 35 mounted on the camera substrate. As shown in FIG. 7, the hinge-side ground metal plate 35 is provided at the other end of the holding portion 35a, the first contact portion 35b for the camera board that is continuous with one end of the holding portion 35a, and the holding portion (engaging portion) 35a. It has the 2nd contact part 35c for continuous sub-board | substrates. The hinge-side ground metal plate 35 is formed by bending a thin metal plate and has elasticity. The macro holder 33 is sandwiched by the sandwiching portion 35a, and the fixing claw 33a of the macro holder 33 is inserted into the hole of the sandwiching portion 35a. The first contact portion 35b is fixed to the macro holder 33 and locked to the macro holder 33. The first contact portion 35b is provided on the macro holder's speaker holder 32 (camera holder) side (that is, the surface facing the camera 29), and the The two contact portions 35c are arranged so as to be conductive (see FIG. 8).

  FIGS. 9A and 9B show contact positions of the hinge-side ground metal plate 35 and the camera board tab and the speaker holder 32, wherein FIG. 9A is a perspective explanatory view, and FIG. 9B is a perspective view of the back surface of the speaker holder 32. As shown in FIG. 9, the hinge-side ground metal plate 35 attached to the macro holder 33 (see FIG. 8) brings the first contact portion 35 b into contact with the contact surface 32 b on the back surface side of the speaker holder 32 and the second contact. The part 35 c is in contact with the camera substrate 34. The camera board tab 36 of the camera board 34 is made of a metal leaf spring, and the contact 36 a is in contact with the contact surface 32 c on the back side of the speaker holder 32. Note that the macro holder 33 is omitted for simplification of the drawing.

  The camera board 34 is routed from the circuit board in the second housing 13 to the back surface of the camera board 34 (the surface on the back side of the surface on which the speaker holder 32 is arranged) via the hinge part 14b. The cable 28b is connected to a camera board connector terminal 27b provided on the back surface of the camera board 34, and is connected and connected to the circuit board on the second housing 13 side through a plurality of lines. By the way, since this connector 27b has many connection pins, it has a rectangular appearance in which one side in the arrangement direction is particularly long. The inside of the convex portion 14 is formed in a substantially tapered shape in the protruding direction while having a certain width in the direction between the pair of hinge bearings 13a and 13b. The connector 27 b is arranged on the surface of the camera substrate 34 on the protruding direction side of the convex portion 14 so that the direction of the long side thereof coincides with the direction between the hinge bearings 13 a and 13 b, and the camera substrate 34 is arranged in the convex portion 14. Then, it is comprised so that it may enter, without interfering with the deepest part in the convex part 14. FIG.

As will be described later, the structure and electrical connection for countermeasures against static electricity from the outside are performed on one surface of the camera substrate 34, but the connector 27b is disposed on the opposite side to the countermeasure surface. The influence of static electricity can be reduced.
The plurality of lines include a ground (reference potential) line, and a ground line pattern is formed on the camera substrate 34 so that the reference potential is supplied to be equal to the circuit board on the second housing 13 side. It will be.
The camera board tab 36 is soldered onto the ground pattern connected to the reference potential from the camera board connector terminal 27b of the camera board 34 and is maintained at the reference potential. Furthermore, the second contact portion 35 c is brought into contact with and contacted with a contact formed on the ground pattern of the camera substrate 34. As a result, the speaker holder 32 is electrically connected to the ground pattern of the camera substrate 34 in two systems, and consequently to the ground of the lower circuit substrate in the second housing 13.

FIG. 10 is an explanatory view showing a contact state between the hinge side ground metal plate 35 and the speaker holder 32. As shown in FIG. 10, the hinge-side ground metal plate 35 incorporated on the camera substrate 34 is in a state where both the first contact portion 35b and the second contact portion 35c are bent, and the first contact portion 35b is The second contact portion 35c is brought into pressure contact with the contact surface 32b of the speaker holder 32 and the camera substrate 34, respectively.
As described above, the hinge-side ground metal plate 35 forms an electrostatic path between the speaker holder (camera holder) 32 in which the camera 29 is incorporated and the camera substrate (sub-substrate) 34.

11A and 11B show the attachment state of the first housing ground metal plate 38 on the first housing side, where FIG. 11A is a perspective explanatory view before attaching the ground metal plate, and FIG. 11B is a perspective explanatory view after attaching the ground metal plate. As shown in FIG. 11, a first housing ground metal plate 38 is attached and fixed to the convex portion 14 of the first housing 12 at a predetermined location on the side where the main board 19 is disposed.
FIG. 12 is a perspective view of the first casing ground sheet metal. As shown in FIG. 12, the first housing ground metal plate 38 is provided with an engaging portion 38a, a first contact portion 38b for the main board continuous with one end of the engaging portion 38a, and the other end of the engaging portion 38a. It has the 2nd contact part 38c for continuous speaker holders. The first housing ground sheet metal 38 is formed of a thin metal plate and has a spring property, and is fixedly attached to a rib formed in the convex portion 14 of the first housing 12 by a locking portion 38a. (See FIG. 11). That is, between the main board (display board) 19 and the camera board (sub board) 34 via the conductive speaker holder (camera holder) 32 by the hinge side ground sheet metal 35 and the first housing ground sheet metal 38. It will be grounded.

  FIG. 13 is a perspective explanatory view showing a contact portion for static electricity countermeasures between the first casing ground sheet metal 38, the main board, and the speaker holder. As shown in FIG. 13, the first housing ground metal plate 38 attached to the convex portion 14 (see FIG. 11) brings the first contact portion 38 b into contact with the contact surface 19 a on the surface side of the main board 19, and The two contact portions 38 c are brought into contact with the contact surface 32 d on the surface side of the speaker holder 32. That is, the first casing ground metal plate 38 is attached to the rib between the main board 19 and the speaker holder 32 in the convex portion 14 after the main substrate 19 and the speaker holder 32 are attached to the convex portion 14, and Both the contact part 38b and the second contact part 38c are brought into contact with the main substrate 19 and the speaker holder 32 from above.

FIG. 14 is an external perspective view of a mobile phone for explaining a static electricity intrusion route. As shown in FIG. 14, a place where static electricity easily enters in the mobile phone 10 is a place where there is a gap, and when it relates to the vicinity of the speaker holder 32 and the camera base 30, it is provided on the camera lens cover 23 a of the decorative panel 23. There are a window A of the flash unit, a window B of the camera unit, a sound emission hole C of the speaker unit, and an exposed part of the macro knob D.
With respect to such a static electricity intrusion route, a static electricity countermeasure route will be described. For the window A of the flash unit and the window B of the camera unit, the window A of the flash unit (camera unit window B) → the camera lens cover 23a (conducting plating is performed on the periphery of the window on the back side) → the main board tab 19a ( The abutment is made in contact with the back of the camera lens cover 23a). The window B of the camera unit may be a path from the camera unit window B → the camera lens cover 23a → the camera board 34 tab 36 → the speaker holder 32 → the first housing ground metal plate 38 → the ground of the main board 19. .

  With respect to the hole C of the speaker portion, the route is from the hole C of the speaker portion → the speaker holder 32 → the first housing ground sheet metal 38 → the ground of the main board 19. Regarding the intrusion of static electricity from the gap at the attachment position of the macro knob D to the housing, the macro knob D → the hinge side ground metal plate 35 or the sub plate tab 36 → the speaker holder 32 → the first housing ground metal plate 38 → the ground of the main board 19 It becomes the route.

  As described above, the camera board 34 including only the camera-related parts such as the camera 29 and the macro switch 37 is provided, and the system is separated from the main board 19 and is directly routed to the lower circuit board on the operation key side by the cable 28b. Mounted on the camera board 34 is a hinge-side ground metal plate 35 for static electricity countermeasures and a camera board tab 36 for static electricity countermeasures, and guides static electricity coming from the outside (around the hinge part) to the ground of the main board 19. A route is secured. In this way, the speaker holder is made of a conductive material, and further connected by two ground metal plates made of a thin metal plate in the gap between the main substrate and the camera substrate. Therefore, another line can be provided as compared with the case where the static electricity entering the camera board 34 is released to the ground of the lower circuit board only by the cable 28b, and the amount of conductivity in each ground line system is distributed. In addition to securing a strong ground line, the adverse effect on the control signal line of the camera flowing through the cable 28b can be reduced as much as possible.

Further, as a path for guiding static electricity that has entered from the outside to the ground through the speaker holder 32 in which the camera 29 is incorporated and integrated, a first casing ground sheet metal 38 is added to the first casing 12 to form the main board 19. Lead static electricity to the ground.
Therefore, the static electricity countermeasure ground metal plates 35 and 38 can reliably guide the static electricity to the camera to the ground of the main (LCD) board 19 or the lower circuit board through a plurality of paths.

  The hinge-side ground metal plate 35 is fixed to the macro holder 33 by using a shape sandwiched between springs, and then fixed by a fixing claw 33a. Thereby, since it is assembled so that it may drop in order from the top, the countermeasure against static electricity can be taken without impairing the incorporation property. The camera base 30 and the main board 19 are connected to the ground via the speaker holder 32. Thereby, it is possible to take measures against static electricity (in addition to noise and the like) via the speaker holder 32. Further, in a structure in which the camera base 30 and the main board 19 are separated, the ground can be strengthened by connecting the two boards.

  Further, a path connecting from the speaker holder 32 incorporating the camera 29 to the battery side ground of the lower circuit board of the lower case 24 through the camera board 34 or the main board 19 and the respective cables 28a and 28b, that is, 2 Since the electrostatic path of the system is formed in a loop shape, the system is stabilized in a state where the impedance is lowered, and the shielding performance of the speaker holder 32 with respect to the camera 29 is improved.

1 is a side view of a folding-type mobile phone according to an embodiment of the present invention. FIG. 2 is a perspective view of the cellular phone of FIG. 1 in a closed state. FIG. 2 is a perspective view of the cellular phone of FIG. 1 in an opened state. It is a disassembled perspective view of the mobile phone of this invention. It is a perspective view which shows the internal structure of one housing | casing of a mobile telephone. It is a disassembled perspective view of a camera module. It is a perspective view explaining the state which mounts a hinge side ground sheet metal to a macro holder. It is a perspective view which shows the hinge side ground metal plate with which the macro holder was mounted | worn. The hinge side ground sheet metal and camera board tab and the contact part of a speaker holder are shown, (a) is perspective explanatory drawing, (b) is a perspective view of the back surface of a speaker holder. It is explanatory drawing which shows the contact state of a hinge side ground sheet metal and a speaker holder. The attachment state of the ground sheet metal on the first housing side is shown, (a) is a perspective explanatory view before attaching the ground sheet metal, and (b) is a perspective explanatory view after attaching the ground sheet metal. It is a perspective view of the 1st case ground sheet metal. It is a perspective explanatory view showing the first case ground sheet metal and the contact portion for static electricity countermeasures of the main board and the speaker holder. It is an external appearance perspective view of the mobile phone explaining the penetration route of static electricity.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Cellular phone 11 Hinge structure 12 1st housing | casing 12a Camera window 13 2nd housing | casing 13a, 13b Hinge bearing 14 Convex part 15 Concave 16 Main indicator 17, 24 Lower case 18 Reinforcement sheet metal 19 Main board 20 Sub indicator 21 Sub-display holder 22, 25 Upper case 23 Cosmetic panel 23a Camera lens cover 26 Battery lid 27a, b Connector terminal 28a, b Cable 29 Camera 30 Camera base 31 Speaker 32 Speaker holder 32a Camera holder part 33 Camera related functional parts (macro holder )
33a Fixed claw 34 Camera board 35 Hinge side ground metal plate 35a Holding part 35b, 38b First contact part 35c, 38c Second contact part 35d Hole 36 Camera board tab 37 Macro switch 38 First housing ground sheet metal 38a Locking part A Flash Window B Camera window C Speaker hole D Macro knob

Claims (4)

Two casings are provided, and a convex portion protruding from one casing is pivotally supported by a pair of hinge bearings provided apart from the edge of the other casing, and the one casing and the other casing are supported. A portable electronic device having a casing and a pivotally connected to each other,
A camera and a holder to which the camera is mounted are arranged on the convex portion, and a camera substrate that transmits and receives signals to and from the camera, a display, and a signal that supplies signals to the display are provided inside the one casing. Board and
The main board has a ground electrically connected to a first cable disposed in the one casing through the hinge bearing from the other casing,
The camera board has a ground electrically connected to a second cable disposed inside the one casing through the hinge bearing from within the other casing,
The portable electronic device, wherein the holder has conductivity and is electrically connected to a ground of the main board and a ground of the camera board. The camera is arranged such that at least a direction that does not coincide with the protruding direction of the convex portion is an imaging direction,
The camera board is arranged on the protruding direction side of the convex portion with respect to the camera, and a connector to which the second cable is connected is provided on a surface of the camera board that does not face the camera. The portable electronic device according to claim 1.   A first metal contact portion that contacts the holder is provided at one end, a second contact portion that contacts the camera substrate is provided at the other end, and a sheet metal member that conducts the holder and the camera substrate is provided. Item 3. The portable electronic device according to Item 1 or 2. Between the camera board and the camera, related functional parts of the camera are arranged,
A first contact portion to be brought into contact with the holder is provided at one end, and a second contact portion to be brought into contact with the camera substrate is provided at the other end, and an engagement portion that engages with the related functional component is formed. The portable electronic device according to claim 1, further comprising a sheet metal member that is engaged with the related functional component to make the holder and the camera substrate conductive.

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