JP4767792B2 - Electronics - Google Patents

Description

  The present invention relates to an electronic device such as a mobile phone, a PDA (Personal Digital Assistant), a portable music player, a digital camera, a notebook computer, and a printer.

Patent Document 1 discloses an electronic device including a closed loop sensor. There is also known an electronic device in which a push button is arranged at the center of an annular operation member.
JP-T-2005-522797

  The design extensibility cannot be obtained only by arranging the push button at the center of the annular operation member. Therefore, it is conceivable to arrange a decorative member other than the operation button in the center of the annular operation member. However, if the surface of the annular operation member and the surface of the decoration member are arranged on the same plane, it is difficult to recognize the operation member due to the tactile sensation, and operability is low. Dirt is easy to adhere.

  The objective of this invention is providing the electronic device which has a cyclic | annular operation member with high designability and operability.

  The electronic device of the present invention includes a case having a case opening, a decorative member disposed in the case opening, and an annular operation member disposed between the case opening and the decorative member, A chamfered surface is provided at a ridge between the exposed surface of the operating member exposed from the case opening and the inner peripheral surface of the operating member, and the chamfered surface is an exposed surface of the decorative member exposed from the case opening. It is located outside the case.

  Preferably, the operation member has an annular overlapping portion that covers an outer peripheral portion of the exposed surface of the decorative member.

  Preferably, the operation member is configured to be depressible, and the overlapping portion abuts on a ridge portion between the exposed surface of the decoration member and the outer peripheral surface of the decoration member when the operation member is depressed. A chamfered surface is formed.

  Preferably, the operation circuit board is provided in the case and arranged so as to form a gap between the operation member, and the operation circuit board is provided on a surface facing the case opening. The tact switch and the touch sensor electrode are disposed on the surface of the operation circuit board facing the case opening so as to cover the tact switch and the touch sensor electrode, and projecting in a position facing the tact switch. The operation member is provided at a position overlapping the tact switch and the touch sensor electrode on a surface of the sheet member facing the case opening.

  Preferably, the decorative member is a translucent member that transmits light from a display element provided inside the case.

  ADVANTAGE OF THE INVENTION According to this invention, the electronic device which has a cyclic | annular operation member with high designability and operativity can be provided.

  FIG. 1 is a perspective view showing an external appearance of a mobile phone 1 as an electronic apparatus according to an embodiment of the present invention. FIG. 1 (a) is a perspective view showing an open state, and FIG. 1 (b) shows a closed state. It is a perspective view.

  The mobile phone 1 is configured as a so-called foldable mobile phone, and includes a first housing 2 and a second housing 3 that are rotatably connected to each other between an open state and a closed state.

  The first casing 2 and the second casing 3 are configured to form a casing of the entire mobile phone 1 by connecting the end portions of the first casing 2 and the second casing 3 with a connecting portion 4 that is the center of rotation. The first housing 2 and the second housing 3 are each formed in a generally thin rectangular parallelepiped shape, and are overlapped with each other in the closed state so that their contours substantially coincide with each other.

  The first housing 2 has a facing surface 2a that faces the second housing 3 in the closed state and a back surface 2b that is the back surface thereof. The first housing 2 includes, for example, a speaker 107 for calling (see FIG. 13) that emits sound from a sound emitting port (not shown) that opens on the facing surface 2a, and a main display unit that displays images and characters on the facing surface 2a. 6 (see FIG. 8), a sub display unit 5 that displays images and characters on the back surface 2b, a ring key (operation member) 7 that is provided on the outer periphery of the sub display unit 5 and that accepts user operations, and an image that is captured from the back surface 2b The flash 11 which illuminates the part 9 and the back surface 2b side is provided.

  A housing opening 2h is formed on the back surface 2b. The ring key 7 is exposed from the housing opening 2h. The sub display unit 5 is exposed from the key opening 7 h of the ring key 7. The shapes of the housing opening 2h and the key opening 7h are, for example, circular.

  The 2nd housing | casing 3 has the opposing surface 3a which opposes the 1st housing | casing 2 in a closed state, and the back surface 3b used as the back surface. The second housing 3 includes, for example, a call microphone 108 (see FIG. 13) that collects sound from a sound collection port (not shown) that opens in the facing surface 3a, and a transmission / reception device that performs radio communication using radio waves. The built-in antenna 105 (see FIG. 13) is provided with a dial key (not shown) that is arranged on the facing surface 3a and receives a user operation.

  FIG. 2 is an exploded perspective view of the first housing 2. The upper side in FIG. 2 is the back surface 2b side, and the lower side in the paper surface is the facing surface 2a side.

  The first housing 2 includes a front case 21 constituting the facing surface 2a, a rear case 23 fixed to the front case 21 so that various electronic components and the like are accommodated between the front case 21, and a rear case 23 And a decorative panel 25 constituting the back surface 2b. Note that the first housing 2 can also be regarded as a decorative panel 25 covering a third housing 2 ′ having a front case 21 and a rear case 23.

  Between the front case 21 and the rear case 23, from the front case 21 side, a main display device 49, a display substrate 27, a sub display device 29, a reinforcing frame 31, a double-sided tape 33, a trim plate (translucent member). 35, a double-sided tape 37, and a sensor substrate 39 are arranged in this order (strictly, partly in parallel). Between the rear case 23 and the decorative panel 25, the key sheet 41 and the ring key 7 are laminated and integrated. A mounting surface 39 a on the rear case 23 side of the sensor substrate 39 is provided with a plurality of dome switches 45 that detect user operations via the ring keys 7, touch sensor electrodes 47, and light emitting elements 53 that illuminate the ring keys 7. ing. The sub display device 29 and the trim plate 35 constitute a sub display unit 5.

  The front case 21, the rear case 23, and the decorative panel 25 are made of, for example, resin. The front case 21 and the rear case 23 are fixed to each other, for example, by screwing a screw boss (not shown) inserted in the other into a screw boss (not shown) provided in one. Since the front case 21 and the rear case 23 are fixed to each other, the main display device 49, the display substrate 27, the sub display device 29, the reinforcing frame 31, and the sensor substrate 39 are stacked on each other (strictly, one In a state of being arranged in parallel with each other) and sandwiched between the front case 21 and the rear case 23.

  The main display device 49 is composed of, for example, an organic EL display or a liquid crystal display. The main display device 49 constitutes the main display unit 6 and has a display surface 49 a (see FIG. 8) that faces the inner surface of the facing surface 2 a of the front case 21. 2 shows a state where a part of the back surface of the main display device 49 is exposed from the substrate opening 27h of the display substrate 27. FIG.

  The display substrate 27 is made of, for example, a printed wiring board based on a resin. The display substrate 27 is provided with a control circuit for controlling operations of the main display device 49 and the sub display device 29.

  The display substrate 27 is mounted on the front case 21 and the rear case 23 by abutting against the inner side surfaces of the front case 21 and the rear case 23 and a boss (not shown) provided on the front case 21 and the rear case 23. Positioning in the direction along the surface is performed. In addition, the display board 27 has a mounting surface on the front case 21 side in contact with a rib provided on the inner side surface of the front case 21 and a back surface of the main display device 49, and a mounting surface on the rear case 23 side on the reinforcing frame 31. By contacting, the front case 21 and the rear case 23 are positioned in a direction perpendicular to the mounting surface.

  The sub display device 29 is composed of, for example, an organic EL display or a liquid crystal display. The sub display device 29 has a display surface 29a facing the housing opening 2h. The sub display device 29 has, for example, a thin rectangular parallelepiped shape. The display surface 29a is, for example, a rectangle. The sub display device 29 is fitted and inserted into a substrate opening 27 h provided in the display substrate 27, and the back surface of the sub display device 29 comes into contact with the back surface of the main display device 49.

  FIG. 3 is an exploded perspective view illustrating a method for arranging the trim plate 35. The trim plate 35 is a translucent member provided to protect the display surface 29a of the sub display device 29 from dust, water, and the like.

  In the conventional mobile phone, no ring key is provided around the sub display unit, and the trim plate is directly fixed to the rear case so as to close the opening of the rear case. However, since the ring key 7 is arranged around the sub display unit 5 in the mobile phone 1, a gap for arranging the ring key 7 must be provided between the trim plate 35 and the housing opening 2h. It is difficult to directly fix the trim plate 35 to the rear case 23 or the decorative panel 25.

  Therefore, in the mobile phone 1, the trim plate 35 is fixed to the reinforcing frame 31 disposed between the rear case 23 and the sub display device 29. The trim frame 35 is indirectly fixed to the rear case 23 by sandwiching the reinforcing frame 31 between the front case 21 and the rear case 23.

  FIG. 4 is an exploded perspective view illustrating a method for arranging the sensor substrate 39.

  A substrate opening 39 h is formed in the sensor substrate 39. The substrate opening 39h has a shape (for example, a substantially circular shape) into which the trim plate 35 can be fitted, for example. The sensor substrate 39 is laminated on the surface of the reinforcing frame 31 facing the housing opening 2h while the trim plate 35 is inserted into the substrate opening 39h. Accordingly, the sensor substrate 39 can be disposed to face the inner surface of the rear case 23 while exposing the display surface 29a of the sub display device 29 through the trim plate 35. In other words, the dome switch (tact switch) 45 and the touch sensor electrode 47 can be arranged facing the ring key 7 while exposing the display surface 29a.

  Hereinafter, the combination of the reinforcing frame 31, the trim plate 35, and the sensor substrate 39 may be referred to as a frame assembly 51.

  FIG. 5 is an exploded perspective view of the frame assembly 51. In FIG. 5, the upper side of the drawing is the front case 21 side. Details of the frame assembly 51 will be described with reference to FIGS.

  The reinforcing frame 31 is made of, for example, resin. As shown in FIGS. 3 to 5, the reinforcing frame 31 has a plate-like portion 31 a that faces the display substrate 27 and the display surface 29 a, and a rib 31 b that protrudes from the plate-like portion 31 a toward the display substrate 27. is doing.

  The plate-like portion 31 a has a larger area than the sub display device 29, for example, and covers most of the display substrate 27. The plate-like portion 31a is formed with a frame opening 31h (FIG. 5) for exposing the display surface 29a to the housing opening 2h side. The frame opening 31h is rectangular, for example, but may be circular or oval as appropriate.

  The rib 31b abuts on the display substrate 27 and forms a space in which electronic components and the like can be arranged between the display substrate 27 and the plate-like portion 31a (see FIG. 8). For example, the rib 31b extends so as to surround the outer periphery of the sub display device 29. The rib 31b extends along a part of the outer peripheral edge of the plate-like portion 31a.

  As shown in FIG. 2, the plate-like portion 31a has a recess 31d having substantially the same shape (eg, substantially circular) as the trim plate 35 on the housing opening 2h side. The depth of the recess 31 d is larger than the thickness of the double-sided tape 33 and smaller than the thickness obtained by adding the thickness of the double-sided tape 33 and the trim plate 35.

  As shown in FIG. 5, a dust sheet 43 is disposed on the surface of the plate-like portion 31a on the sub display device 29 side. The dust sheet 43 is made of an elastic member. The elastic member is, for example, a sponge or rubber. The dust sheet 43 is formed with a sheet opening 43h having substantially the same shape as the frame opening 31h. The outer edge of the dust sheet 43 has substantially the same shape (for example, a rectangle) as that of the sub display device 29, and is positioned with respect to the reinforcing frame 31 by a rib 31 b surrounding the sub display device 29.

  As shown in FIGS. 2 and 5, the double-sided tape 33 has, for example, an outer edge substantially the same shape (for example, substantially circular) as the outer edge of the trim plate 35 and substantially the same shape (for example, substantially rectangular) as the frame opening 31 h. The tape opening 33h is provided. The double-sided tape 33 is configured, for example, by applying an adhesive to an elastic member such as rubber.

  The trim plate 35 is made of, for example, translucent resin, glass, ceramics, single crystal, or the like. The shape of the trim plate 35 is, for example, a disk shape. The diameter of the trim plate 35 is smaller than the housing opening 2h, and a gap in which the ring key 7 can be disposed is formed between the trim plate 35 and the housing opening 2h. On the outer peripheral surface of the trim plate 35, a positioning protrusion 35d (FIG. 5) protrudes in the radial direction.

  As shown in FIGS. 2 and 5, the double-sided tape 37 has, for example, an outer edge substantially the same shape as a part of the sensor substrate 39 (for example, a rectangle whose three sides coincide with the sensor substrate 39). A tape opening 37h having substantially the same shape (for example, a substantially circular shape) as the opening 39h is provided. The double-sided tape 37 is configured, for example, by applying an adhesive to an elastic member such as rubber.

  The sensor substrate 39 is made of, for example, a printed wiring board based on a resin. The diameter of the substrate opening 39h is larger than the trim plate 35 and smaller than the housing opening 2h. The dome switch 45, the touch sensor electrode 47, and the light emitting element 53 are provided around the substrate opening 39h.

  Specifically, two dome switches 45 are provided on both sides of the substrate opening 39h in the longitudinal direction of the first casing 2 (the direction from the end on the connecting portion 4 side to the end on the opposite side). In total, four are provided on both sides of the substrate opening 39h in the two lateral directions. A total of four light emitting elements 53 are arranged between the dome switches 45. A total of eight touch sensor electrodes 47 are provided between the dome switch 45 and the light emitting element 53, one each. That is, a plurality of dome switches 45 and touch sensor electrodes 47 are alternately arranged so as to surround the substrate opening 39h.

  In the frame assembly 51 having the above components, the reinforcing frame 31 and the trim plate 35 are fixed to each other by the double-sided tape 33. At this time, the trim plate 35 is fitted and inserted into the recess 31 d of the reinforcing frame 31 and positioned relative to the reinforcing frame 31. Positioning of the trim plate 35 in the circumferential direction is performed by fitting the protrusion 35d into a recess formed at the edge of the recess 31d.

  Further, the reinforcing frame 31 and the sensor substrate 39 are fixed to each other by a double-sided tape 37. At this time, the sensor substrate 39 is positioned by inserting the trim plate 35 into the substrate opening 39h. Positioning of the trim plate 35 in the circumferential direction is performed by fitting the protrusion 35d into a recess formed at the edge of the substrate opening 39h.

  The trim plate 35 may be fixed after the sensor substrate 39 is fixed to the reinforcing frame 31. The recess 31d has only a depth equivalent to the thickness of the double-sided tape 33, and the trim plate 35 may not be positioned by the recess 31d.

  FIG. 6 is an exploded perspective view for explaining a method of assembling the ring key 7.

  The rear case 23 is formed in a substantially box shape having a back surface and an inclined side surface surrounding the periphery of the back surface. On the rear side of the rear case 23, a panel recess 23a into which the decorative panel 25 is fitted is formed. The depth of the panel recess 23a is equal to the thickness of the decorative panel 25, for example. A sheet recess 23b into which the key sheet 41 is fitted is formed at the bottom of the panel recess 23a. The depth of the sheet recess 23b is equal to the thickness of the key sheet 41, for example. A case opening 23h for exposing the display surface 29a of the sub display device 29 is formed at the bottom of the sheet recess 23b. The case opening 23h is circular, for example. In addition, a plurality of positioning protrusions 23c protruding toward the key sheet 41 are formed around the case opening 23h in the bottom of the sheet recess 23b.

  The key sheet 41 is made of, for example, translucent silicon rubber. The key sheet 41 is formed in, for example, a rounded rectangular shape. The key sheet 41 is formed with a sheet opening 41 h for exposing the display surface 29 a of the sub display device 29. The sheet opening 41h is circular, for example. In the key sheet 41, a plurality of positioning hole portions 41 a are provided on the outer peripheral side of the attachment position of the ring key 7. The positioning holes 41a are provided at, for example, four corners.

  The decorative panel 25 is formed in a size and shape that covers, for example, the entire back surface of the rear case 23 and the side surface of the end portion opposite to the connecting portion 4 (left side in FIG. 6). The back surface of the decorative panel 25 constitutes the back surface 2 b of the first housing 2. The decorative panel 25 is formed with a panel opening 25 h for exposing the display surface 29 a of the sub display device 29. The panel opening 25h is circular, for example.

  The ring key 7 is made of a resin such as ABS (acrylonitrile, butadiene, styrene), PC (polycarbonate), or the like. The ring key 7 is fixed by a fixing means such as an adhesive or a double-sided tape so that the key opening 7h and the sheet opening 41h overlap the surface of the key sheet 41 on the decorative panel 25 side. The key sheet 41 is disposed in the seat recess 23b of the rear case 23 while being positioned by inserting the positioning projection 23c of the rear case 23 into the positioning hole 41a. The decorative panel 25 is fitted and positioned in the panel recess 23a of the rear case 23, and is fixed to the rear case 23 with an adhesive. The key sheet 41 is sandwiched between the rear case 23 and the decorative panel 25. The ring key 7 is exposed from the panel opening 25h. The case opening 23h and the panel opening 25h constitute a housing opening 2h.

  FIG. 7A is a plan view of the first housing 2, FIG. 7B is an end view in the direction of arrows VIIb-VIIb in FIG. 7A, and FIG. FIG. 8 is an end view in the direction of arrows VIIc-VIIc in FIG.

  As shown in FIG. 7C, the front case 21 is formed with a protrusion 21 a that protrudes toward the second housing 3. The protrusion 21 a is configured to fit into a notch (not shown) formed at the end of the second housing 3 to constitute the connecting portion 4.

  FIG. 8 is an enlarged view of a region VIII in FIG.

  A trim plate 61 having translucency for protecting the display surface 49a is disposed on the display surface 49a side of the main display device 49 (the lower side in the drawing of FIG. 8). As described above, the display substrate 27 and the sub display device 29 are arranged on the back side of the main display device 49 (the upper side in the drawing of FIG. 8).

  On the display surface 29a of the sub display device 29, as described above, the dust sheet 43, the reinforcing frame 31, the double-sided tape 33, the trim plate 35, the double-sided tape 37 (not shown in FIG. 8), the sensor substrate 39, and the rear case. 23, the key sheet 41, the ring key 7, and the decorative panel 25 are laminated. However, the double-sided tape 33 and the trim plate 35 are arranged in parallel to the sensor substrate 39, the rear case 23, the key sheet 41, and the decorative panel 25.

  The display surface 29a includes a sheet opening 43h, a frame opening 31h, a tape opening 33h, a tape opening 37h (not shown in FIG. 8), a substrate opening 39h, a case opening 23h, and a sheet opening 41h (housing). The opening 2h), the key opening 7h, the panel opening 25h (housing opening 2h), and the trim plate 35 having translucency are exposed to the back side of the first housing 2.

  9A is an enlarged view of a part of FIG. 8, FIG. 9B is an enlarged view of the region IXb of FIG. 7C, and FIG. 10A is FIG. FIG. 10A is an end view in the direction of arrow Xa-Xa, and FIG. 10B is an end view in the direction of arrow Xb-Xb in FIG.

  The substrate opening 39h is larger in diameter than the trim plate 35 and smaller in diameter than the case opening 23h. Therefore, the sensor substrate 39 has an annular region 39c located between the edge of the trim plate 35 and the edge of the case opening 23h around the substrate opening 39h.

  As shown in FIGS. 9A and 9B, the dome switch 45 is provided in the annular region 39 c of the mounting surface 39 a of the sensor substrate 39. The dome switch 45 has a movable contact 45a made of a dome-shaped sheet metal. The edge 45b of the movable contact 45a is connected to the conductive pattern of the sensor substrate 39. A fixed contact 45c is provided at a position on the sensor substrate 39 that faces the center of the movable contact 45a. When the movable contact 45a is pressed against the protruding direction, the movable contact 45a reverses and abuts the fixed contact 45c while producing a click feeling. As a result, the dome switch 45 is turned on. When the pressing is released, the movable contact 45a is separated from the fixed contact 45c by its restoring force, and the dome switch 45 is turned off.

  As shown in FIGS. 10A and 10B, the touch sensor electrode 47 is provided over the annular region 39c of the sensor substrate 39 and the outer peripheral side of the annular region 39c. The touch sensor electrode 47 is an electrode constituting, for example, a capacitive touch sensor 48 (see FIG. 13). Although not particularly illustrated, the touch sensor electrode 47 includes a first electrode disposed along the sensor substrate 39 and a second electrode disposed to face the first electrode via a dielectric. When the user's finger approaches the touch sensor electrode 47, the user's finger functions as a ground (or as a dielectric), thereby changing the capacitance between the first electrode and the second electrode. The touch sensor 48 detects a user operation by detecting a change in the capacitance. Note that a circuit for detecting a change in capacitance is provided at an appropriate position on the sensor substrate 39, for example.

  As shown in FIGS. 9A, 9B, 10A, and 10B, the key sheet 41 covers most of the outer peripheral side of the annular region 39c of the sensor substrate 39. Is arranged. That is, the outer edge of the key sheet 41 is positioned on the outer peripheral side of the case opening 23 h of the rear case 23, and the inner edge of the key sheet 41 is on the outer peripheral side of the substrate opening 39 h and more than the dome switch 45 and the touch sensor electrode 47. Located on the inner circumference.

  On the outer edge side of the key sheet 41, a sandwiched portion 41c that is sandwiched between the bottom portion of the sheet recess 23b of the rear case 23 and the decorative panel 25 is formed. The sandwiched portion 41c is sandwiched across the outer periphery of the case opening 23h and the panel opening 25h. In other words, the sandwiched portion 41c is formed in an annular shape so as to surround the case opening 23h and the panel opening 25h. The sandwiched portion 41c is formed thick so as to protrude toward the decorative panel 25. The thickness of the sandwiched portion 41c is, for example, 0.2 mm. In addition, although the to-be-clamped part 41c is spaced apart from the decoration panel 25 in the figure, it is closely_contact | adhered with the decoration panel 25 actually.

  On the inner edge side of the key sheet 41, there is a contact portion 41 d that contacts the mounting surface 39 a of the sensor substrate 39 at a position on the outer periphery side of the substrate opening 39 h and on the inner periphery side of the dome switch 45 and the touch sensor electrode 47. Is formed. The contact portion 41d is formed thick so as to protrude toward the sensor substrate 39 side. The contact portion 41d is formed in an annular shape so as to surround the substrate opening 39h. The contact portion 41d is formed in a region overlapping with the ring key 7.

  A covering portion 41e between the sandwiched portion 41c and the contact portion 41d covers the dome switch 45, the touch sensor electrode 47, and the light emitting element 53. The covering portion 41e is separated from the mounting surface 39a of the sensor substrate 39 by the contact portion 41d and the rear case 23 between the sandwiched portion 41c and the sensor substrate 39 functioning as a spacer.

  As shown in FIGS. 9A and 9B, a pusher 41b for facilitating the pressing of the dome switch 45 is formed at a position facing the dome switch 45 in the covering portion 41e. Yes. The pusher 41b protrudes toward the dome switch 45 and is thick. 10A, the pusher 41b is not formed at the position where the touch sensor electrode 47 is disposed.

  As shown in FIGS. 9A, 9B, 10A, and 10B, the ring key 7 has an exposed surface 7a that is exposed from the panel opening 25h. As shown in FIGS. 6, 9A, 10A, and 10B, the exposed surface 7a has a top surface 7b on the outer peripheral side and an inclined surface 7c on the inner peripheral side. Yes. In FIG. 9B, the top surface 7b and the inclined surface 7c are not shown because of the grooves provided in the exposed surface 7a and extending in the radial direction.

  9 (a), 9 (b), 10 (a), and 10 (b), the top surface 7b is on the case outer side (upper side of the drawing) than the exposed surface 35a of the trim plate 35. Is located. The top surface 7b is formed substantially parallel to the back surface 2b of the first housing 2, the trim plate 35, the sensor substrate 39, and the like. 9 (a) and 9 (b), the outer edge of the top surface 7b (the outer edge of the exposed surface 35a), in other words, the position where the stroke of the top surface 7b is the largest is the pusher 41b and the dome switch. 45 is located at the center.

  9 (a), 9 (b), 10 (a), and 10 (b), the inclined surface 7c is on the case outer side (upper side of the drawing) than the exposed surface 35a of the trim plate 35. Is located. The inclined surface 7c is inclined so as to be located on the inner side of the case toward the inner peripheral side. As shown in FIG. 9A, the inclined surface 7c is located on the inner peripheral side of the dome switch 45, and the force in the direction perpendicular to the inclined surface 7c applied to the inclined surface 7c is the dome switch 45 side. It is easy to be transmitted to. The inclined surface 7c can be regarded as a chamfered surface provided at the ridge between the top surface 7b as an exposed surface exposed from the panel opening 25h and the inner peripheral surface of the ring key 7.

  As shown in FIGS. 9A and 9B, a flange 7f protruding in the radial direction is formed on the outer peripheral side of the ring key 7 (see also FIG. 12). The flange 7f engages with the edge of the panel opening 25h of the decorative panel 25 from the inside of the panel, and functions as a retaining portion that prevents the ring key 7 from coming off from the panel opening 25h. The flange 7f is arranged in four directions similarly to the arrangement position of the pusher 41b (dome switch 45) (see FIG. 12A). The pusher 41b is disposed at a position overlapping the flange 7f.

  9 (a), 9 (b), 10 (a), and 10 (b), the inner surface of the ring key 7 includes a fixed surface 7d on the outer peripheral side and an inner peripheral side. The opposite surface 7e. The ring key 7 is fixed to the key sheet 41 by fixing the fixing surface 7d to the covering portion 41e of the key sheet 41 by a fixing means such as an adhesive or a double-sided tape.

  The facing surface 7e faces the contact portion 41d of the key sheet 41. The facing surface 7e is positioned in a direction away from the key sheet 41 (upper side of the drawing) than the fixed surface 7d. That is, a step is formed on the surface of the ring key 7 facing the key sheet 41 so that the inner peripheral side is separated from the key sheet 41 more than the outer peripheral side. The facing surface 7e is separated from the key sheet 41 by a predetermined clearance, and the ring key 7 is less likely to be prevented from being pressed by the contact portion 41d.

  The facing surface 7e is opposed to a portion on the outer peripheral side of the exposed surface 35a of the trim plate 35. In other words, the ring key 7 has an annular overlapping portion 7 g that covers the outer peripheral portion of the exposed surface 35 a of the trim plate 35. The facing surface 7e contacts the exposed surface 35a of the trim plate 35 when a pressing operation is performed on the ring key 7. Accordingly, it is possible to prevent an excessive load from being applied to the dome switch 45, the touch sensor electrode 47, and the light emitting element 53 via the ring key 7 during the pushing operation.

  The exposed surface 35a of the trim plate 35 has a top surface 35b occupying most of the exposed surface 35a, and an inclined surface 35c on the outer peripheral side thereof. The top surface 35b is formed in a planar shape parallel to the decorative panel 25, the sensor substrate 39, and the like. The inclined surface 35c is inclined so that the outer peripheral side is located on the inner side of the case. The inclined surface 35c can be regarded as a chamfered surface provided at a ridge between the top surface 35b as an exposed surface exposed from the panel opening 25h and the inner peripheral surface of the trim plate 35. The inclined surface 35 c comes into contact with the facing surface 7 e when a pressing operation is performed on the ring key 7.

  As shown in FIG. 10B, the reinforcing frame 31 has an engaging portion 31c (see also FIG. 4) protruding from the rib 31b along the side surface 21c of the front case 21 toward the side surface 21c. On the other hand, an engaged portion 21d that can be engaged with the engaging portion 31c is formed on the inner surface of the side surface 21c. The engaged portion 21d is formed by forming a recess in which the protrusion of the engaging portion 31c is accommodated on the inner surface of the side surface 21c.

  The frame assembly 51 is fixed to the front case 21 by engaging the engaging portion 31c and the engaged portion 21d. At this time, the dust sheet 43 abuts around the display surface 29 a of the sub display device 29. That is, the sub display device 29 is sandwiched between the reinforcing frame 31 and the front case 21 by engaging the engaging portion 31 c with the engaged portion 21 d and fixing the reinforcing frame 31 to the front case 21. Has been.

  11A and 11B are diagrams for explaining a waterproof structure on the inner peripheral side of the ring key 7. FIG. 11A is an enlarged view of the periphery of the ring key 7, and FIG. 11B is a region XIb of FIG. FIG.

  The limit position of the cover 41e of the key sheet 41 in the case outward direction (upper limit position on the upper side of the drawing) is defined by the fixed surface 7d of the ring key 7. The limit position of the ring key 7 in the case outer direction (upper limit position on the upper side in the drawing) is defined by the flange 7f.

  As shown in FIG. 11A, the key sheet 41 is formed such that the inner peripheral side portion is bent toward the sensor substrate 39 when not attached to the first housing 2. Specifically, a bent portion 41f is formed in the covering portion 41e so that the contact portion 41d is positioned on the sensor substrate 39 side. The bent portion 41f is provided, for example, near the boundary between the fixed surface 7d of the ring key 7 and the facing surface 7e.

  By providing the bent portion 41f, the abutting portion 41d has a protruding amount from the portion where the fixing surface 7d is fixed in the covering portion 41e so that the upper limit position of the fixed portion and the mounting of the sensor substrate 39 It becomes larger than the distance DS1 with the surface 39a.

  Accordingly, as shown by a dotted line in FIG. 11B, the covering portion 41e that has been bent before being attached to the first housing 2 is, as shown by a solid line in FIG. If it is attached to, it will be elastically deformed in the direction to correct the bending, and a restoring force will be generated. The contact portion 41d is pressed against the sensor substrate 39 with the restoring force as an urging force.

  The protruding amount of the contact portion 41d from the covering portion 41e and the thickness of the portion of the rear case 23 sandwiched between the sandwiched portion 41c and the sensor substrate 39 are set to be equal to the distance DS1. When the key sheet 41 is attached to the first housing 2, the covering portion 41 e becomes substantially planar.

  As shown in FIGS. 4 and 10A, the plate-like portion 31 a of the reinforcing frame 31 is provided with a recess 31 d at a position overlapping the touch sensor electrode 47. The concave portion 31d is selectively provided corresponding to the touch sensor electrode 47 in which an electronic component is disposed in the vicinity. FIG. 4 illustrates a case where the touch sensor electrode 47 on the right side of the paper and the touch sensor electrode 47 on the left side of the paper are formed. The recesses 31d may be provided corresponding to all the touch sensor electrodes 47, respectively.

  The concave portion 31d is formed by providing a so-called meat stealing portion on the surface of the plate-like portion 31a of the reinforcing frame 31 on which the sensor substrate 39 is placed. The recess 31d is hollow and air is present. In addition, the dielectric constant (for example, 2.0-6.0) of resin which forms the reinforcement frame 31 is larger than the dielectric constant (about 1.0) of air. Accordingly, the reinforcing frame 31 has a lower dielectric constant in the region overlapping the touch sensor electrode 47 than in other regions, and the change in the capacitance on the opposite side of the reinforcing frame 31 from the touch sensor electrode 47 is It is difficult to change the electric capacity on the touch sensor electrode 47 side.

  An electronic component is disposed at a position overlapping the recess 31 d of the display substrate 27. The electronic component includes a member having a relatively high dielectric constant such as a metal body. FIG. 4 illustrates a case where a connector 67 (see also FIG. 3) is provided as an electronic component at a position overlapping the concave portion 31d on the right side of the paper, and an IC 69 is provided at a position overlapping the concave portion 31d on the left side of the paper. FIG. 10A illustrates a connector 67 as an electronic component. The connector 67 is for electrically connecting the display substrate 27 and a circuit board (not shown) of the second housing 3, and a signal line (not shown) extending from the circuit board of the second housing 3 is connected to the connector 67. Is done.

  As shown in FIG. 10A, the connector 67 is covered with a support member 71. The support member 71 is a member having a lower dielectric constant than the reinforcing frame 31 and the connector 67. The thickness of the portion of the support member 71 sandwiched between the connector 67 and the reinforcing frame 31 is equivalent to the distance between the connector 67 and the reinforcing frame 31 when no load is applied to the reinforcing frame 31. Therefore, even if the sensor substrate 39 and the reinforcing frame 31 are bent toward the display substrate 27 by pressing the ring key 7, the support member 71 functions as a spacer, and the distance between the touch sensor electrode 47 and the connector 67 is kept constant. Be drunk. The support member 71 may be supported on the display substrate 27 without the connector 67 interposed therebetween.

  12A and 12B are diagrams for explaining a method of illuminating the ring key 7 by the light emitting element 53. FIG. 12A is a plan view of the ring key 7 and the key sheet 41, and FIG. FIG. 13 is an enlarged view of a region XIIb in FIG. 12A in a state exposed from an opening 25h.

  The light emitting element 53 is composed of, for example, an LED. As shown in FIG. 10A, the light emitting element 53 is disposed at a position overlapping the ring key 7. The ring key 7 and the decorative panel 25 are formed of a non-translucent material and / or coated with a non-translucent paint. The key sheet 41 is made of a translucent material. The light from the light emitting element 53 is guided to the outside of the first housing 2 through the gap 65 between the outer edge 7k of the ring key 7 and the panel opening 25h via the key sheet 41.

  As shown in FIG. 12B, the gap 65 is formed so as to be gradually narrowed toward the flange 7f. For example, as shown in FIG. 12A, the outer edge 7k of the ring key 7 (the inner edge of the gap 65) is a perfect circle in a region other than the area where the flange 7f is provided, whereas the shape of the panel opening 25h. The (outer edge of the gap 65) is not a perfect circle, and is set so that the diameter decreases as it approaches the flange 7f. Note that the gap 65 may be maintained at a constant width at a position spaced apart from the flange 7f to some extent.

  FIG. 13 is a block diagram showing an example of the configuration of the signal processing system of the mobile phone 1.

  The mobile phone 1 includes a control unit 101, a communication processing unit 104, an acoustic processing unit 106, and an image processing unit 103.

  The control unit 101 receives signals from various means such as the operation unit 111 and performs predetermined calculations based on the signals, and the image processing unit 103, the communication processing unit 104, the acoustic processing unit 106, the imaging unit 109, and the like. Various signals such as control signals for controlling the operation of the various means are output to the various means.

  The communication processing unit 104 includes a high-frequency circuit, and modulates various data such as audio data and image data processed by the control unit 101 in order to perform wireless communication using radio waves, via the antenna 105. To send. Further, the communication processing unit 104 demodulates a signal received via the antenna 105 and outputs the demodulated signal to the control unit 101.

  The acoustic processing unit 106 converts the acoustic data from the control unit 101 into an acoustic signal and outputs the acoustic signal to the speaker 107 for call and the speaker 109 for notification and music reproduction (see also FIG. 4). The sound processing unit 106 converts the sound signal from the microphone 108 into sound data and outputs the sound data to the control unit 101.

  The image processing unit 103 converts the image data from the control unit 101 into an image signal and outputs the image signal to the main display device 49 and the sub display device 29. Further, the imaging signal (image data) output from the imaging unit 9 is converted into image data of a predetermined format and output to the control unit 101.

  The operation unit 111 includes a dome switch 45 and a touch sensor electrode 47. As described above, when the dome switch 45 is pressed through the ring key 7, the movable contact 45a comes into contact with the fixed contact 45c and outputs an ON signal. As described above, the touch sensor 48 including the touch sensor electrode 47 outputs a signal corresponding to a change in capacitance caused by the user's finger approaching or contacting the ring key 7. The signal may be output as an ON signal when the capacitance exceeds a predetermined threshold, or a signal having a continuous or stepwise level proportional to the capacitance. May be.

  Since a plurality of dome switches 45 and touch sensor electrodes 47 are arranged on the circumference along the ring key 7, the control unit 101 determines whether or not the user has selected the signals from the dome switches 45 and the touch sensor electrodes 47. The position of the finger on the ring key 7 can be specified.

  For example, if an ON signal is output from any one of the dome switches 45 arranged in four directions (for example, up, down, left, and right), it is specified that the position in one of the four directions is pushed in. Is done. If an ON signal is output from two adjacent dome switches 45 arranged in four directions (for example, up, down, left, and right), the position in one direction among the four directions (oblique directions) between the four directions is It is specified that the push-in operation is being performed.

  Similarly, for example, if an ON signal is output from any one of the touch sensor electrodes 47 arranged in four directions (for example, up, down, left, and right), the user's finger is positioned at one of the four directions. The contact is identified. If an ON signal is output from two adjacent touch sensor electrodes 47 arranged in four directions (for example, up, down, left, and right), a position in one of four directions (oblique direction) between the four directions It is specified that the user's finger is touching.

  Further, the control unit 101 can identify a time-series change in the position of the user's finger by recording a history of the position of the identified user's finger. For example, a rotation operation in which the finger is slid along the ring key 7 to continuously move the finger, that is, an operation of tracing the ring key 7 can be specified. Thereby, for example, the volume output from the speaker 109 is increased / decreased, the luminance of the sub display device 29 is increased / decreased, or the sub display device 29 is increased / decreased according to the number of laps and the angle at which the finger is continuously moved along the ring key 7. Can be changed in a predetermined cycle.

  Note that the control unit 101 distinguishes between a contact-only operation in which a finger is in contact with the ring key 7 but no push-in operation is performed, and a push-in operation (which is naturally touched). And the signal from the dome switch 45 is processed.

  That is, when the ON signal is output only from the touch sensor electrode 47 and the ON signal is not output from the dome switch 45, the control unit 101 determines that the operation is only a contact, and the dome switch 45 (and the touch sensor electrode 47). ), The control signals corresponding to both operations can be made different from each other by determining that the push-in operation has been performed.

  According to the above embodiment, an electronic apparatus having a sense of unity between the display unit and the operation member can be provided.

  That is, the first casing 2 having the casing opening 2h, the sub display device 29 provided in the first casing 2 and having the display surface 29a exposed from the casing opening 2h, the casing opening 2h and the sub display. A reinforcing frame 31 that is arranged between the device 29 and that exposes the display surface 29a to the housing opening 2h side and is fixed to the first housing 2; The trim plate 35 is fixed to the surface facing 2h, closes the frame opening 31h, and is disposed in the housing opening 2h, and the reinforcing frame 31 is disposed on the surface facing the housing opening 2h. A sensor board 39 having a board opening 39h to be inserted, a dome switch 45 provided on a mounting surface 39a of the sensor board 39 facing the housing opening 2h, the housing opening 2h and the trim plate 3 And the ring key 7 disposed at a position overlapping the dome switch 45 and the sub display unit 5 including the sub display device 29 and the trim plate 35 and the ring key 7. , Exposed from the same opening (housing opening 2h), the sense of unity between the sub display unit 5 and the ring key 7 increases. Further, since the dome switch 45 is provided at a position overlapping with the ring key 7, there is a click feeling compared to the case where a touch panel is provided on the sub display device 29, and it is easy to operate. The reinforcing frame 31 not only supports the trim plate 35 but also supports the sensor substrate 39 to which a force pressing the dome switch 45 is applied, and is also used to reinforce the strength of the sensor substrate 39. Miniaturization is achieved. Since it has a relatively large area covering the display substrate 27, it is also used for reinforcing the strength of the display substrate 27.

  The sub display device 29 is sandwiched between the reinforcing frame 31 and the surface of the first housing 2 opposite to the surface on which the housing opening 2h is provided (the inner surface of the front case 21). The frame 31 is also used for holding the sub display device 29 and strengthening the strength, so that the mobile phone 1 can be downsized. Further, since the reinforcing frame 31 can be fixed to the front case 21 by the engaging portion 31c and the engaged portion 21d provided on the front case 21, before the front case 21 and the rear case 23 are combined. The sub display device 29 and the reinforcing frame 31 can be fixed to the front case 21, and the assembly process is facilitated. Since the dust sheet 43 made of an elastic member is interposed between the display surface 29 a of the sub display device 29 and the reinforcing frame 31, the sub display device 29 can be securely attached with a predetermined pressing force without damaging the sub display device 29. In addition, water and dust can be prevented from entering the display surface 29a.

  Since it further includes a touch sensor electrode 47 provided on the mounting surface 39a facing the housing opening 2h of the sensor substrate 39 and disposed at a position overlapping the ring key 7, not only the pressing operation of the ring key 7, but also the ring key An operation of bringing a finger close to or in contact with 7 becomes possible.

  A plurality of dome switches 45 are provided so as to surround the substrate opening 39h, a plurality of touch sensor electrodes 47 are provided so as to surround the substrate opening 39h, and the dome switches 45 and the touch sensor electrodes 47 are alternately arranged in the circumferential direction of the substrate opening. Since they are arranged, an operation of tracing the ring key 7 can be performed, and a click feeling by a tact switch can be given to the operation. That is, by providing the ring key 7 surrounding the sub-display unit 5 as the operation member, not only the sense of unity between the operation member and the display unit is improved, but also the operation member sufficiently exhibits the function as a ring key. Accordingly, diversification of operation methods and improvement of operability can be achieved.

  A light emitting element 53 provided on the mounting surface 39a facing the housing opening 2h of the sensor substrate 39 is further provided, and light from the light emitting element 53 is transmitted between the ring key 7 and the housing opening 2h in the first housing. 2 is formed so that the inner edge of the ring key 7 can be visually recognized by the light from the sub display unit 5 and the outer edge of the ring key 7 can be visually recognized by the light from the light emitting element 53. The operability at night can be improved while suppressing an increase in the number of parts.

  Since the light emitting element 53 is disposed at a position overlapping the ring key 7, an area overlapping the ring key 7 in the mounting surface 39 a of the sensor substrate 39 is effectively used, and the mobile phone 1 can be downsized.

  The ring key 7 has a plurality of flanges 7f as retaining portions that can be engaged from the inside of the casing at the edge of the casing opening 2h of the first casing 2, and the ring key 7 and the casing opening 2h Since the gap 65 of the light emitting element 53 is formed so as to become narrower as it approaches the plurality of flanges 7f, the light amount from the light emitting element 53 gradually decreases as it approaches the flange 7f, and is blocked by the flange 7f. The spot is not conspicuous.

  Moreover, according to the above embodiment, it is possible to provide an electronic device having a high degree of freedom in design and high waterproofness and dustproofness.

  In other words, the third casing 2 ′ including the rear case 23 having the case opening 23 h and the front case 21 and the panel opening 25 h, and the third casing 2 ′ is covered with the panel opening 25 h so as to overlap the case opening 23 h. The decorative panel 25, the reinforcing frame 31 provided in the third housing 2 ', and the reinforcing frame 31 are fixed to the surface of the reinforcing frame 31 facing the housing opening 2h, and are disposed in the case opening 23h and the panel opening 25h. The trim plate 35 is provided on the surface of the reinforcing frame 31 facing the case opening 23h and has a substrate opening 39h through which the trim plate 35 is inserted, and the sensor substrate 39 is opposed to the case opening 23h. The touch sensor electrode 47 provided on the mounting surface 39a and the sensor substrate 39 so as to cover the touch sensor electrode 47. The key sheet 41 is provided on the surface facing the opening 23h and has a sheet opening 41h having a smaller diameter than the case opening 23h and the panel opening 25h and through which the trim plate 35 is inserted. The key sheet 41 faces the case opening 23h. The key sheet 41 is provided at a position overlapping the touch sensor electrode 47 on the surface and exposed from the gap between the case opening 23h and the panel opening 25h and the trim plate 35. ′ And the decorative panel 25, and surrounds the substrate opening 39h with respect to the mounting surface 39a of the sensor substrate 39 facing the case opening 23h, and the annular sandwiched portion 41c surrounding the case opening 23h and the panel opening 25h. In this way, it has an annular contact portion 41d that contacts at a position on the inner peripheral side with respect to the touch sensor electrode 47. Water and dust entering from the gap between the panel opening 25 h and the outer edge of the ring key 7 are sandwiched between the key sheet 41 and the decorative panel 25 and between the key sheet 41 and the rear case 23. Water or dust that is blocked by the portion 41 c and enters from the gap between the trim plate 35 and the inner edge of the ring key 7 is blocked by the contact portion 41 d between the key sheet 41 and the sensor substrate 39. That is, water and dust entering from the inner edge or the outer edge of the ring key 7 are blocked by the key sheet 41 and cannot enter the third casing 2 ′. As a result, a gap can be formed between the ring key 7 and the trim plate 35, or between the ring key 7 and the panel opening 25h. The light from the light emitting element 53 can be transmitted through the gap 65 between the ring key 7 and the decorative panel 25. The trim plate 35 and the reinforcing frame 31 are fixed by a close fixing means such as a double-sided tape 33 to prevent water and dust from entering between the two members. In addition, fixing by means of close contact fixing means such as a double-sided tape 37 prevents water and dust from entering between the two members. In addition, since the key sheet 41 is attached to the case with the outer periphery of the key sheet 41 being sandwiched, the key sheet 41 can be made thinner than the conventional one. By appropriately arranging the reinforcing frame 31 in the unused space inside the first housing 2 ', the strength of the first housing 2' can be improved without increasing the thickness of the first housing 2 '. .

  Since the key sheet 41 is provided with a positioning hole 41a, and the rear case 23 is provided with a positioning projection 23c to be inserted into the positioning hole 41a, the assembly is facilitated and the operation of the ring key 7 is performed. The key sheet 41 is prevented from being displaced due to the above.

  When the key sheet 41 is not attached to the third casing 2 ′, the key sheet 41 is bent so that the inner peripheral side is positioned closer to the sensor substrate 39 than the outer peripheral side, and is attached to the third casing 2 ′. When the contact portion 41d and the sensor substrate 39d, the force received by the contact portion 41d from the sensor substrate 39 is elastically deformed in the direction of correcting the bending to generate a biasing force that presses the contact portion 41d against the sensor substrate 39. The contact pressure with 39 can be increased and water and dust can be prevented from entering more reliably. Compared to the case where the key sheet which is not bent is elastically deformed so as to be convex toward the sensor substrate 39 by the force received by the contact portion from the sensor substrate 39 to generate an urging force, the ring key 7 It is easy to secure a movable range during the pushing operation.

  The contact portion 41d is provided to protrude toward the sensor substrate 39 at a position overlapping the ring key 7, and the surface of the ring key 7 that faces the key sheet 41 is provided on the outer peripheral side of the contact portion 41d. A fixing surface 7d fixed to the sheet 41, and a facing surface 7e provided on the inner peripheral side of the fixing surface 7d and facing the contact portion 41d at a position farther from the key sheet 41 than the fixing surface. Therefore, it is not necessary to secure a space for providing the contact portion 41d outside the region where the ring key 7 is disposed, and the pressing of the ring key 7 is not hindered.

  A sub display device 29 is provided on the opposite side of the reinforcing frame 31 from the case opening 23h. The reinforcing frame 31 is provided with a frame opening 31h that transmits light from the sub display device 29 toward the case opening 23h. The decorative member disposed in the case opening 23h and the panel opening 25h is a trim plate 35 as a translucent member that closes the frame opening 31h. Therefore, the waterproof and dustproof properties are high, and the display unit and the operation member are integrated. Can be provided.

  The sensor board 39 further has a dome switch 45 as a tact switch provided at a position overlapping the ring key 7 on the mounting surface 39a facing the case opening, and the key sheet 41 includes the ring key 7 and the dome switch 45. Between them, a projecting pusher 41b is provided. That is, the key sheet 41 is not a mere waterproof sheet, but is also used as a sheet that allows the dome switch 45 to be preferably pressed by pressing the ring key 7, reducing the number of members and reducing the thickness of the mobile phone 1. Is achieved.

  The ring key 7 has a flange 7f that can be engaged from the inside of the decorative panel at the edge of the panel opening 25 of the decorative panel 25, and the pusher 41b is provided at a position overlapping the flange 7f. A space for pressing the pusher 41b is secured by the flange 7f, and the diameter of the ring key 7 can be reduced.

  Moreover, according to the above embodiment, the electronic device which can improve the sensing ability of a sensor can be provided, reducing in size.

  That is, the first housing 2 having the housing opening 2 h, the display substrate 27 disposed in the first housing 2 so as to face the housing opening 2 h, and the housing opening 2 h among the display substrates 27. An electronic component (IC 69 or connector 67) disposed on the surface facing the substrate, a reinforcing frame 31 disposed on the surface of the display substrate 27 facing the housing opening 2h so as to cover the electronic component, and reinforcement The sensor substrate 39 disposed on the surface of the frame 31 facing the housing opening 2h and the surface of the sensor substrate 39 facing the housing opening 2h are provided so as to approach or separate the object from the housing opening 2h side. The reinforcing frame 31 has a surface facing the display substrate 27 and spaced from the display substrate 27 by more than the thickness of the electronic component and a surface contacting the sensor substrate 39. Plate-like part 3 The surface of the plate-like portion 31a that is in contact with the sensor substrate 39 has a recess 31d formed in a region overlapping the touch sensor electrode 47 and the electronic component, thereby reinforcing the dielectric constant inside the recess 31d. The influence of the electronic component on the touch sensor electrode 47 can be reduced by lowering the dielectric constant of the frame 31. As a result, the electronic component can be brought closer to the touch sensor electrode 47, and the size can be reduced.

  The sensor board 39 further includes a dome switch 45 provided on a surface facing the housing opening 2h, and an annular ring key 7 exposed from the housing opening 2h and overlapping the dome switch 45 and the touch sensor electrode 47. The region of the reinforcing frame 31 that overlaps with the dome switch 45 is a position where the recess 31d is not disposed. Therefore, a click feeling can be given to operations unique to the touch sensor such as tracing the ring key 7, and the dome switch 45 The bending at the time of the pressing operation at the arrangement position can be suppressed, and the decrease in sensitivity of the dome switch 45 can be suppressed.

  Moreover, according to the above embodiment, the electronic device which has a cyclic | annular operation member with high design property and operativity can be provided.

  That is, the first housing 2 having the housing opening 2h, the trim plate 35 as a decorative member arranged in the housing opening 2h, and the annular shape arranged between the housing opening 2h and the trim plate 35 The ring key 7 has a chamfered surface such as a C surface or an R surface at the ridge between the exposed surface (top surface 7 b) exposed from the housing opening 2 h and the inner peripheral surface of the ring key 7. The inclined surface 7c is provided on the inner peripheral side of the ring key 7 because the inclined surface 7c is located on the outer side of the case with respect to the exposed surface 35a of the trim plate 35 exposed from the housing opening 2h. The decorative member is arranged to improve the design. Further, the finger can be brought into contact with the inclined surface 7c, and an operation of tracing the ring key 7 can be performed while applying a force from the inside of the ring key 7 to the outside and a force for pushing the ring key 7 into the housing. In addition, operability such as a rounding operation and a pressing operation is improved. Since the inclined surface 7c is located on the outer side of the housing with respect to the exposed surface 35a of the trim plate 35, the position of the ring key 7 can be grasped by tactile sense, and the finger is less likely to contact the trim plate 35. Dirt is difficult to adhere to the trim plate 35.

  Since the ring key 7 has an annular overlapping portion 7g that covers the outer peripheral portion of the exposed surface 35a of the trim plate 35, the inside of the housing is exposed through a gap between the trim plate 35 and the ring key 7. This prevents water and dust from entering, and improves design.

  At the ridge between the exposed surface 35a and the outer peripheral surface of the trim plate 35, an inclined surface 35c as a chamfered surface such as a C surface or an R surface with which the overlapping portion 7g abuts when the ring key 7 is pressed is formed. Therefore, the feeling when the ring key 7 comes into contact with the trim plate 35 becomes mild, and the operability is improved.

  The sensor substrate 39 provided in the first housing 2, the dome switch 45 and the touch sensor electrode 47 provided on the surface of the sensor substrate 39 facing the housing opening 2 h, and the dome switch 45 and the touch sensor electrode 47. A key sheet 41 having a projecting pusher 41b at a position facing the dome switch 45 and disposed on the mounting surface 39a of the sensor substrate 39 facing the housing opening 2h. Since the key 7 is provided at a position overlapping the dome switch 45 and the touch sensor electrode 47 on the surface of the key sheet 41 facing the housing opening 2h, the operation method of the ring key 7 is diversified and the operability is improved. Is planned. For example, it is possible to give a click feeling to the operation of tracing the ring key 7.

  Since the trim plate 35 is a translucent member that transmits light from the sub display device 29 provided in the first housing 2, the trim plate 35 has high operability and has an integrated feeling between the display unit and the operation member. Can provide.

  In the above embodiment, the mobile phone 1 is an example of the electronic device of the present invention, and the third housing 2 'or the first housing 2 is an example of the case of the present invention, and the case opening 23h or the housing The opening 2h is an example of the case opening of the present invention, the trim plate 35 is an example of the decorative member and the translucent member of the present invention, the ring key 7 is an example of the annular operating member of the present invention, and the ring key 7 The inclined surface 7c is an example of the chamfered surface of the operating member of the present invention, the inclined surface 35c of the trim plate 35 is an example of the chamfered surface of the decorative member of the present invention, and the sensor substrate 39 is the circuit board for operation of the present invention. The dome switch 45 is an example of a tact switch of the present invention, and the key sheet 41 is an example of a sheet member of the present invention.

  The present invention is not limited to the above embodiment, and may be implemented in various aspects.

  The electronic device of the present invention is not limited to a mobile phone. For example, a digital camera, a notebook computer, a PDA (Personal Digital Assistant), or a printer may be used.

  The tact switch is not limited to the dome switch as long as it causes a click feeling in accordance with the pushing operation. The tact switch may be a mechanical contact type using a metal material as a movable contact, or may be an elastic contact type using a conductive rubber. Moreover, you may have a hysteresis feeling.

  The touch sensor including the touch sensor electrode and the touch sensor electrode may be any sensor that can detect the proximity or contact of a part of a human body such as a finger or an operation member such as an electronic pen. For example, an electromagnetic induction type may be used.

  The annular operation member only needs to have an opening for exposing the decorative member and the like, and is not limited to a circular one. For example, it may be an ellipse or a polygon. Further, the cross-sectional shape of the operation member may be set as appropriate. An appropriate decorative member can be exposed from the opening of the annular operation member. For example, it may be a simple decorative panel or another operation member.

  The sheet member (key sheet 41) may be directly sandwiched between the case (rear case 23) and the cover member (decorative panel 25) as in the embodiment, or indirectly sandwiched via other members. May be. For example, a waterproof member that adheres to the sheet member and the cover member may be provided between the sheet member and the cover member, and a waterproof member that adheres to the sheet member and the case may be provided between the sheet member and the case. In this case, the adhesion between the sheet member and the cover member is improved, and the waterproof effect is further enhanced. The waterproof member is made of an elastic sheet such as rubber or double-sided tape.

  The positioning protrusions inserted through the positioning holes (41a) of the sheet member (key sheet 41) are not limited to those provided in the case (rear case 23), but are provided in the cover member (decorative panel 25). Alternatively, it may be provided on both the case and the cover member. However, in the case where a concavo-convex pattern is formed on the entire surface of the cover member facing the case, it is difficult to provide a positioning protrusion on the surface, so it is preferable to provide the case as in the embodiment. .

  When the key sheet is formed so as to be bent so that the inner peripheral side is located on the sensor substrate side, the key sheet is not limited to a bent one but may be curved.

  The recess (31d) for lowering the dielectric constant of the plate-like portion of the frame (reinforcing frame 31) is not limited to the one provided on the surface facing the sensor substrate on which the touch sensor electrode is provided, but provided on the back surface thereof. It may be. Moreover, the said recessed part is not limited to what overlaps with both a touch sensor electrode and an electronic component, You may overlap with either a touch sensor electrode or an electronic component.

  Further, a solid member having a dielectric constant smaller than that of the material forming the frame may be arranged inside the recess (31d) of the frame (reinforcing frame 31) instead of being a cavity (air layer). In this case, a decrease in the strength of the frame due to the provision of the recess is suppressed. Therefore, bending deformation of the sensor substrate (39) and the frame during the pressing operation is suppressed. The solid member is, for example, resin, glass, rubber, asbestos, or cloth.

  In the solid member, the surface exposed to the outside preferably forms the same plane as the surface on which the sensor substrate is placed in the plate-like portion (31a) of the frame (reinforcing frame 31). In this case, the sensor substrate (39) is prevented from being slightly deformed to the inside of the recess (31d) by its own weight, and the distance between the touch sensor electrode (47) of the sensor substrate and the annular operation member (ring key 7) is made constant. Since it can maintain, the sensitivity by a touch sensor can be maintained.

  The chamfered surfaces (inclined surface 7c, inclined surface 35c) of the annular operation member (ring key 7) and the decorative member (transparent member, trim plate 35) may have various chamfered shapes, and are not limited to a flat surface (C surface). For example, the R surface may be used.

The perspective view which shows the external appearance of the mobile telephone which concerns on embodiment of this invention. The disassembled perspective view of the 1st housing | casing of the mobile telephone of FIG. The disassembled perspective view explaining the arrangement | positioning method of the trim plate in the 1st housing | casing of FIG. FIG. 3 is an exploded perspective view illustrating a method for arranging a sensor substrate in the first housing in FIG. 2. The disassembled perspective view of the frame assembly in the 1st housing | casing of FIG. FIG. 3 is an exploded perspective view for explaining a method for incorporating a ring key in the first housing of FIG. 2. The top view and end view of the 1st housing | casing of FIG. The enlarged view of the area | region VIII of FIG.7 (b). The figure which expanded a part of FIG. 8, and the enlarged view of the area | region IXb of FIG.7 (c). The end view of the Xa-Xa arrow direction of Drawing 7 (a), and the end view of the Xb-Xb arrow direction of Drawing 7 (a). The figure explaining the waterproof structure in the ring key inner edge in the 1st housing | casing of FIG. The figure explaining the illumination method of the ring key in the 1st housing | casing of FIG. The block diagram which shows the structure of the signal processing system of the mobile telephone of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Mobile phone (electronic device), 2 ... 1st housing | casing (case), 2 '... 3rd housing | casing (case), 2h ... Housing opening (case opening), 7 ... Ring key (annular operation member) 7c ... Inclined surface (chamfered surface), 23 ... Rear case, 23h ... Case opening, 25 ... Decoration panel (cover member), 25h ... Panel opening (cover opening), 27 ... Display substrate (circuit board for electronic components) 29 ... sub display device (display element, display device), 29a ... display surface, 31 ... reinforcing frame (frame), 31a ... plate-like portion, 31d ... concave portion, 31h ... frame opening, 35 ... trim plate (decorative member, (Translucent member), 39 ... sensor board (operation circuit board), 39 h ... board opening, 41 ... key sheet (sheet member), 41 c ... pinched part, 41 d ... contact part, 45 ... dome switch (tact switch) 47 ... Chisensa electrode, 48 ... touch sensor (capacitance sensor), 67 ... connector (electronic component), 69 ... IC (electronic component).

Claims (3)

A case having a case opening;
A decorative member disposed in the case opening and fixed to the case ;
An annular operating member that is disposed between the case opening and the decorative member and can be pressed ,
A display element disposed inside the case of the decorative member;
Have
The operation member has an annular overlapping portion that covers an outer peripheral portion of an exposed surface exposed from the case opening in the decorative member, and the overlapping portion contacts the decorative member when pressed . An operation circuit board provided in the case and arranged to form a gap with the operation member;
A tact switch and a touch sensor electrode provided on a surface of the operation circuit board facing the case opening;
A sheet member disposed on a surface of the operation circuit board facing the case opening so as to cover the tact switch and the touch sensor electrode, and having a projecting pusher at a position facing the tact switch. In addition,
The electronic device according to claim 1 , wherein the operation member is provided at a position overlapping the tact switch and the touch sensor electrode on a surface of the sheet member facing the case opening. The decorative member, an electronic device according to claim 1 or 2 which is a transparent member that transmits light from the display element.

Images