JP2013008905A - Portable type electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thinner mobile phone for which an operation part side housing is attached to a display part side housing slidably through a slide unit interposed between them.SOLUTION: A circuit board provided inside a display part side housing 1 and a circuit board provided inside an operation part side housing 11 are electrically connected through a flexible wiring board 21 provided between both housings 1 and 12. The slide unit includes a base sheet metal 32 provided on an upper surface of the display part side housing 1, a rail sheet metal 33 provided on an upper surface of the base sheet metal 32, and a slider sheet metal provided on a lower surface of the operation part side housing 11 and slidably attached to the rail sheet metal 33. The rail sheet metal 33 is provided with a through-hole 37 for flexible wiring board relief. Then, by housing a part of the flexible wiring board 21 inside the through-hole 37 for the flexible wiring board relief, thickness can be reduced.

Description

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

  For example, as disclosed in Patent Document 1, for example, a conventional mobile phone is provided with a display unit side housing having a display unit on the upper surface and an operation unit side housing having an operation unit on the front side of the upper surface. The display unit side body is completely overlapped on the upper side of the operation unit side body, and the operation unit side body is slid forward relative to the display unit side body. In some cases, the operation unit can be selectively switched to an open state in which the operation unit of the operation unit side casing is exposed.

  In this conventional mobile phone, in order to allow the operation unit side housing to slide relative to the display unit side case, the lower surface of the display unit side case is attached to the slide base sheet metal provided on the upper surface of the operation unit side case. The slide rail sheet metal provided on the slidably attached is slidable. The operation unit side circuit board provided in the operation unit side casing and the display unit side circuit board provided in the display unit side casing are electrically connected via a flexible wiring board. Then, the both ends of the slide rail sheet metal in a predetermined direction are bent toward the lower surface side, and a part of the flexible wiring board is accommodated in the lower surface side space of the slide rail sheet metal formed by this bending, thereby reducing the thickness of the cellular phone. (See the 25th paragraph of Patent Document 1).

JP 2008-131544 A

  However, the conventional mobile phone can be thinned by accommodating a part of the flexible wiring board in the lower surface side space of the slide rail sheet metal, but there is a problem that the thinning is limited.

  Accordingly, an object of the present invention is to provide a portable electronic device that can be further reduced in thickness.

  The portable electronic device according to the present invention is slidably attached to one housing via a slide unit having another housing interposed therebetween, and the circuit board provided in the one housing and the other In a portable electronic device in which a circuit board provided in the housing is electrically connected via a flexible wiring board provided between the two housings, the at least one component constituting the slide unit A flexible wiring board escape through-hole for accommodating a part of the flexible wiring board is provided.

  According to this invention, the thickness can be further reduced.

The schematic side view in the state which decomposed | disassembled some mobile phones as one Embodiment of this invention. The perspective view of a slide unit. The exploded perspective view of a slide unit. The disassembled perspective view of the part of a slide unit and a display part side housing | casing. FIG. 5 is a partial cross-sectional view of the assembly shown in FIG. The side view shown in order to demonstrate the slide operation | movement of a slider sheet metal. The perspective view in the state in which the slider sheet metal was located in the closed position in the slide unit. The perspective view in the state which attached the one end part of the flexible wiring board to the slide unit shown in FIG. FIG. 3 is a schematic cross-sectional view in a closed state in which an operation unit side body is completely overlapped with a display unit side body. FIG. 9 is an enlarged sectional view of a part of FIG. 8. The schematic sectional drawing in the open state which pulled out the operation part side housing | casing with respect to the display part side housing | casing. FIG. 11 is an enlarged sectional view of a part of FIG. 10. The perspective view of a part of a mobile phone as another embodiment of the present invention.

  FIG. 1 is a schematic side view showing a state in which a part of a mobile phone as an embodiment of the present invention is disassembled. This mobile phone includes a display unit side body 1, an operation unit side body 11, a flexible wiring board 21, a slide unit 31, and the like. The display unit side body 1 has a display unit side circuit board 2 inside, a display unit (not shown) made of a liquid crystal display panel or the like on the lower surface, and a receiver (not shown) on the left end. is doing. The operation unit side body 11 has an operation unit side circuit board 12 inside, an operation unit (not shown) composed of a plurality of keys on the lower right side, and a microphone (not shown) at the right end. is doing.

  One end portion of the flexible wiring board 21 is electrically connected to the upper surface of the right end portion of the display unit side circuit board 2 as described later. The other end portion of the flexible wiring board 21 is electrically connected to the lower surface of the left end portion of the operation unit side circuit board 12 as described later. In FIG. 1, the flexible wiring board 21 and the slide unit 31 are illustrated as intersecting, but this is for the convenience of illustration and does not actually intersect as will be described later.

  Next, FIG. 2 shows a perspective view of the slide unit 31, and FIG. 3 shows an exploded perspective view of the slide unit 31. The slide unit 31 includes a base sheet metal 32, a rail sheet metal 33, a slider sheet metal 34, a spring 35, and the like. A slit 36 is provided at a predetermined location on the front side of the base metal plate 32. A rectangular flexible wiring board escape through-hole 37 is provided at a predetermined location in the center of the rail metal plate 33. A substantially L-shaped rail 38 (see FIG. 5) is provided on both the left and right sides of the rail metal plate 33. The slider sheet metal 34 is substantially H-shaped, and a slit 39 is provided at the center thereof. A substantially U-shaped guide portion 40 (see FIG. 5) is provided on both the left and right sides of the slider sheet metal 34.

  The rail metal plate 33 is fixed to the upper surface of the base metal plate 32 by spot welding or the like. The slider metal plate 34 is slidably attached to the upper side of the rail metal plate 33 by the guide portion 40 being slidably attached to the outside of the rail 38 of the rail metal plate 33 (see FIG. 5). One end of the spring 35 is attached to a pin 41 provided at a predetermined location on the upper surface of the rail sheet metal 33. The other end of the spring 35 is attached to a pin 42 provided at a predetermined location on the lower surface of the slider sheet metal 34.

  Next, FIG. 4 shows an exploded perspective view of the slide unit 31 and the display unit side body 1, and FIG. 5 shows a partial sectional view of the assembled state shown in FIG. The base sheet metal 32 of the slide unit 31 is attached to a step 3 provided on the inner wall surface of the display unit side body 1 via a rectangular frame-shaped double-sided adhesive tape 4 that also functions as a waterproof function. The base metal plate 32 is for securing strength and for fixing to the display unit side body 1. Here, as shown in FIG. 5, the resin film 43 is integrally formed on the outer surface of the guide portion of the slider metal plate 34.

  Next, referring to FIGS. 1 and 3, the slider sheet metal 34 includes a screw (not shown) inserted through bosses 44 provided at predetermined four positions of the slider sheet metal 34. The housing 11 is attached to the lower surface of the right end portion in FIG. 1 of the operation unit side housing 11 by being screwed into the lower surface of the right end portion in FIG.

  Next, FIG. 6 is a side view for explaining the sliding operation of the slider metal plate 34. The slider sheet metal 34 has an open position indicated by a solid line in FIG. 6 (a position corresponding to an open state in which the operation unit side body 11 is pulled out with respect to the display unit side body 1) and a closed position indicated by a dashed line in FIG. The rail sheet metal 33 is slidable with respect to (the position corresponding to the closed state in which the operation unit side body 11 is completely overlapped with the display unit side body 1). In this case, the force stored in the spring 35 shown in FIG. 3 is minimum when the slider sheet metal 34 is in the open position and the closed position, and is maximum when the slider sheet metal 34 is in an intermediate position between the open position and the closed position.

  Next, FIG. 7 shows a perspective view of the slide unit 31 with the slider sheet metal 34 positioned at the closed position, and FIG. 8 shows a state in which one end of the flexible wiring board 21 is attached to the slide unit 31 shown in FIG. A perspective view is shown. One end portion 22 and the other end portion 23 of the flexible wiring board 21 are wider than the intermediate portion 24 therebetween. One end 22 of the flexible wiring board 21 is attached to the upper surface of the base sheet metal 32 shown in FIG. 3 in the vicinity of the slit 36 via a double-sided adhesive tape 25 (see FIG. 1). Moreover, the one end part 22 of the flexible wiring board 21 is crimped | bonded to the front-end | tip part of the relay flexible wiring board (not shown) exposed through the slit 36 of the base sheet metal 32 shown in FIG. The base end portion of the relay flexible wiring board in this case is connected to the display unit side circuit board 2 shown in FIG.

  The other end 23 of the flexible wiring board 21 is attached to the lower right side of the operation unit side body 11 shown in FIG. Further, the other end portion 22 of the flexible wiring board 21 is pressure-bonded to the distal end portion of a relay flexible wiring board (not shown) exposed through the slit 39 of the slider sheet metal 34 shown in FIG. In this case, the base end portion of the relay flexible wiring board is connected to the operation unit side circuit board 12 shown in FIG. In this state, a part of the intermediate portion 24 of the flexible wiring board 21 is disposed at a portion corresponding to the flexible wiring board escape through hole 37 of the rail sheet metal 33.

  Next, FIG. 9 shows a schematic sectional view in a closed state in which the operation unit side body 11 is completely overlapped with the display unit side body 1, and FIG. 10 shows a partial enlarged sectional view of FIG. . In this closed state, as shown in FIG. 9, the intermediate portion 24 of the flexible wiring board 21 extends to the left from the one end portion 22 and is bent by 180 ° (hereinafter referred to as the first bent portion 27). The portion 27 extends rightward from the portion 27 and is bent by 180 ° (hereinafter referred to as a second bent portion 28), and extends from the second bent portion 28 to the left and is connected to the other end portion 23. Further, as shown in FIG. 10, a part of the intermediate portion 24 of the flexible wiring board 21 in the vicinity of the first bent portion 27 penetrates the flexible metal plate escape of the rail metal plate 33 provided on the upper surface of the base metal plate 32. It is accommodated in the hole 37. Here, the reason why the first and second bent portions 27 and 28 are provided in the intermediate portion 24 of the flexible wiring board 21 is to allow the flexible wiring board 24 to have an extra length portion.

  Next, FIG. 11 shows a schematic cross-sectional view in an opened state in which the operation unit side body 11 is pulled out from the display unit side body 1, and FIG. 12 shows a partial enlarged cross-sectional view of FIG. In this closed state, as shown in FIG. 11, the first and second bent portions 27 and 28 of the intermediate portion 24 of the flexible wiring board 21 are shown in FIG. 9 according to the drawer of the operation unit side body 11. Each position is moved to the right by a predetermined distance. As shown in FIG. 12, a part of the intermediate portion 24 of the flexible wiring board 21 in the vicinity of the first bent portion 27 is accommodated in the flexible wiring board escape through hole 37 of the rail metal plate 33.

  As described above, in this mobile phone, as shown in FIG. 10, the operation unit side body 11 is completely overlapped with the display unit side body 1, and the display unit as shown in FIG. The intermediate portion 24 of the flexible wiring board 21 in the open state in which the operation unit side body 11 is pulled out from the side case 1, and in the transition from the closed state to the open state and in the transition from the open state to the closed state A part of the vicinity of the first bent portion 27 is accommodated in the flexible wiring board escape through hole 37 of the rail metal plate 33.

  By the way, when shifting from the closed state shown in FIG. 10 to the open state shown in FIG. 12 and vice versa, the intermediate portion 24 of the flexible wiring board 21 has each of the first and second bent portions 27 and 28. Since the movement is performed while the position is displaced, it is necessary to provide a certain amount of space between the housings 1 and 11 in consideration of ensuring smooth movement of the intermediate portion 24 and preventing damage. In the above embodiment, a part of the intermediate portion 24 of the flexible wiring board 21 in the vicinity of the first bent portion 27 can be accommodated in the flexible wiring board escape through hole 37 of the rail metal plate 33. The space can be narrowed and can be made thinner.

  Further, since the flexible wiring board escape through-hole 37 is provided in the rail metal plate 33, the rail metal plate 33 becomes light and the weight can be reduced. In this case, if the flexible wiring board escape through hole 37 is provided only in a region where the rail sheet metal 33 and the intermediate portion 24 of the flexible wiring board 21 interfere with each other, the strength of the rail sheet metal 33 caused by the flexible wiring board escape through hole 37 is increased. Degradation can be minimized.

  Next, FIG. 13 shows a perspective view of a part of a mobile phone as another embodiment of the present invention. This mobile phone differs greatly from that shown in FIG. 7 in that the base sheet metal 32 has the same shape as the flexible wiring board escape through hole 37 provided in the rail sheet metal 33 and has the same shape. This is a point where a through hole 51 is provided. In this case, the lower surface of the base metal plate 32 around the flexible wiring board escape through hole 51 is attached to the inner bottom surface of the display unit side body 1 shown in FIG. The double-sided adhesive tape 52 is for waterproofing and dustproofing the portions of the through holes 37 and 51 for escaping the flexible wiring board.

  In this case, a part of the intermediate portion 24 of the flexible wiring board 21 in the vicinity of the first bent portion 27 is accommodated in the flexible metal plate escape through holes 37 and 51 of the rail metal plate 37 and the base metal plate 32. By doing so, further reduction in thickness and weight can be achieved.

  The present invention is not limited to a mobile phone, and is also applicable to an electronic device such as a portable terminal device such as a PHS (Personal Handyphone System) and a PDA (Personal Data Assistance, Personal Digital Assistance). be able to.

  Hereinafter, various aspects of the present invention will be collectively described as supplementary notes.

(Appendix 1)
The invention of Supplementary Note 1 is attached to one housing so as to be slidable through a slide unit in which another housing is interposed between the circuit board provided in the one housing and the other housing. In a portable electronic device in which a provided circuit board is electrically connected via a flexible wiring board provided between the two housings, at least one component constituting the slide unit is attached to the flexible wiring board. The portable electronic device is characterized in that a flexible wiring board escape through-hole in which a part is accommodated is provided.

(Appendix 2)
The invention of Supplementary Note 2 is that the slide unit includes one sheet metal attached to the one casing and another sheet metal attached to the other casing and slidably attached to the one sheet metal. The portable electronic device as set forth in appendix 1, wherein the through hole for escape of the flexible wiring board is provided in the one sheet metal.

(Appendix 3)
According to the third aspect of the invention, the one sheet metal includes a rail sheet metal attached to a base sheet metal attached to the one casing, and the other sheet metal includes a slider sheet metal attached to the other casing. The portable electronic device according to appendix 1 or 2, characterized by:

(Appendix 4)
The invention according to appendix 4 is the portable electronic device according to appendix 3, characterized in that a flexible wiring board escape through hole similar to the flexible wiring board escape through hole is provided in the base sheet metal.

DESCRIPTION OF SYMBOLS 1 Display part side body 2 Display part side circuit board 11 Operation part side body 12 Operation part side circuit board 21 Flexible wiring board 31 Slider unit 32 Base sheet metal 33 Rail sheet metal 34 Slider sheet metal 35 Spring 37, 51 For flexible wiring board escape Through hole

Claims (4)

  A circuit board provided in the one casing and a circuit board provided in the other casing are slidably attached to the one casing via a slide unit interposed between the other casings. In a portable electronic device electrically connected via a flexible wiring board provided between the two housings, a part of the flexible wiring board is accommodated in at least one component constituting the slide unit. A portable electronic device, characterized in that a flexible wiring board escape through-hole is provided.   The slide unit has one sheet metal attached to the one casing, and another sheet metal attached to the other casing and slidably attached to the one sheet metal, The portable electronic device according to claim 1, wherein a through hole for flexible wiring board escape is provided in the one sheet metal.   The one sheet metal is composed of a rail sheet metal attached to a base sheet metal attached to the one casing, and the other sheet metal is composed of a slider sheet metal attached to the other casing. The portable electronic device according to 1 or 2.   The portable electronic device according to claim 3, wherein a flexible wiring board escape through hole similar to the flexible wiring board escape through hole is provided in the base sheet metal.

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