JP2013172300A - Portable electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a screen from being easily broken at a part where an impact is received even when the impact is applied from the outside to a specific part of the screen, in a portable telephone having the screen.SOLUTION: On an upper surface inner peripheral part of a front case 1 in a rectangular frame shape, a recessed part 2 is provided. On an upper surface of the recessed part 2, an elastic member 3 composed of natural rubber, synthetic rubber or the like is provided by integral molding. To an upper surface of the elastic member 3, a lower surface outer peripheral part of a screen 4 composed of reinforced glass is fixed through a double-sided adhesive tape 5. Then, even when an impact indicated by an arrow A is applied from the outside to the screen 4, by elastic deformation of the elastic member 3, the screen 4 is not easily broken at the part where the impact is received.

Description

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

  2. Description of the Related Art Conventional portable electronic devices such as mobile phones are provided with a screen made of square-shaped tempered glass on the upper surface side of a rectangular frame-shaped case in order to protect a liquid crystal display panel or the like provided below the case. (See, for example, Patent Document 1). In the portable electronic device described in Patent Document 1, a concave portion is provided on the inner peripheral portion of the upper surface of the rectangular frame-shaped case, and the lower outer peripheral portion of the screen made of rectangular tempered glass is attached to the upper surface of the concave portion with a double-sided adhesive tape. It is fixed through.

JP 2010-85453 A

  By the way, in the conventional portable electronic device, when an impact is applied from the outside to the inner part of the outer periphery of the screen fixed to the upper surface of the concave portion of the case via the double-sided adhesive tape, the upper surface of the concave portion of the case Since the outer periphery of the screen fixed with the double-sided adhesive tape is hardly deformed, a relatively large rigidity difference is generated between the outside and inside of the impacted part of the screen. As a result, there is a problem in that the screen may be damaged at the impacted portion. In particular, when the screen is made of tempered glass, the tempered glass is brittle, so that the screen is more likely to be broken at the impacted portion. Moreover, in a portable electronic device in which a touch panel is provided on the lower surface excluding the outer periphery of the screen via an adhesive layer, the screen is often pressed with a finger in order to press the touch panel, and the pressing force at this time is large. If it is too large, the screen may be damaged at the impacted portion.

  In view of this, the present invention relates to a portion where the screen is impacted even when an external impact is applied to a portion inside the outer peripheral portion of the screen fixed to the upper surface of the concave portion of the case via a double-sided adhesive tape (adhesive layer). It is an object of the present invention to provide a portable electronic device that can be prevented from being damaged.

  A portable electronic device according to the present invention has a rectangular frame shape having a concave portion on the inner peripheral portion of the upper surface, an elastic member provided in the concave portion of the case, and an outer peripheral portion of the lower surface bonded to the upper surface of the elastic member. And a screen fixed through a layer.

  According to the present invention, even if an external impact is applied to the inner part of the outer periphery of the screen fixed to the upper surface of the concave portion of the case via the double-sided adhesive tape (adhesive layer), the screen is subjected to the impact. It can be made difficult to break.

1 is a perspective view of a mobile phone as a first embodiment of the present invention. Sectional drawing which follows the II-II line | wire of FIG. Sectional drawing shown in order to demonstrate the case where the impact shown by the arrow A is added in the mobile telephone shown in FIG. Sectional drawing similar to FIG. 3 in the case where an elastic member is not provided. Sectional drawing similar to FIG. 2 of the mobile telephone as 2nd Embodiment of this invention. Sectional drawing similar to FIG. 2 of the mobile telephone as 3rd Embodiment of this invention. Sectional drawing similar to FIG. 2 of the mobile telephone as 4th Embodiment of this invention.

(First embodiment)
FIG. 1 is a perspective view of a mobile phone as a first embodiment of the present invention, and FIG. 2 is a sectional view taken along the line II-II in FIG. This mobile phone includes a rectangular frame-like front case 1 made of polycarbonate or the like. A recess 2 having a square cross section is provided on the inner periphery of the upper surface of the front case 1. On the upper surface of the recess 2 and the lower part of the inner wall surface, a rectangular frame-shaped elastic member 3 made of natural rubber, synthetic rubber or the like is provided by integral molding.

  On the upper surface of the elastic member 3, the outer peripheral portion of the lower surface of the square-shaped screen 4 made of tempered glass is fixed via a rectangular frame-shaped double-sided adhesive tape 5. A touch panel 6 is provided on the lower surface excluding the outer peripheral portion of the screen 4 via an adhesive layer 7 made of an ultraviolet curable resin or the like.

  Inside the front case 1, an outer peripheral portion of a rectangular sheet metal 8 made of stainless steel or the like is embedded by insert molding. A rectangular rear case 9 made of polycarbonate or the like is provided on the lower surface side of the front case 1. A battery pack 10 is provided below the sheet metal 8 on the upper surface of the rear case 9. A liquid crystal display panel module 11 is provided on the upper surface of the sheet metal 8 below the touch panel 6.

  Now, in this cellular phone, as indicated by an arrow A in FIG. 2, an external impact is applied to a portion inside the outer peripheral portion of the screen 4 fixed to the upper surface of the elastic member 3 via the double-sided adhesive tape 5. Suppose. Then, as shown in FIG. 3, the outer peripheral portion of the screen 4 fixed to the upper surface of the elastic member 3 via the double-sided adhesive tape 5 presses the elastic member 3 via the double-sided adhesive tape 5, thereby causing the elastic member 3. Is elastically deformed, and the upper surface thereof is uniformly inclined toward the inner lower side, and the inner side of the outer peripheral portion of the screen 4 fixed to the upper surface of the elastic member 3 via the double-sided adhesive tape 5 according to the uniform inclination. The portion at is deformed in a substantially arc shape. As a result, the bending curvature at the outer side (left side in FIG. 3) and the bending curvature at the inner side (right side in FIG. 3) of the portion subjected to the impact indicated by arrow A are substantially equal, and the impact indicated by arrow A on the screen 4a is received. The difference in rigidity generated between the outer side and the inner side of the raised portion can be made as small as possible, and as a result, the screen 4 can be made less likely to be damaged at the impacted portion.

  On the other hand, when the elastic member 3 is not provided, as shown in FIG. 4, when an impact indicated by an arrow A is applied from the outside, the elastic member 3 is fixed to the upper surface of the recess 2 of the front case 1 via the double-sided adhesive tape 5. Since the outer peripheral portion of the screen 4 is hardly deformed, the bending curvature on the outer side (left side in FIG. 4) of the impacted portion indicated by the arrow A is larger than the bending curvature on the inner side (right side in FIG. 4). 4 causes a relatively large difference in rigidity between the outside and inside of the portion subjected to the impact indicated by the arrow A, and the screen 4 may be damaged at the impacted portion due to the relatively large rigidity difference. There is.

(Second Embodiment)
FIG. 5 is a sectional view similar to FIG. 2 of a mobile phone as a second embodiment of the present invention. The cellular phone shown in FIG. 2 is different from the cellular phone shown in FIG. 2 in that the lower part of the recess 2 formed in the front case 1 has a right-angled triangular section having an inclined surface, and the inclined surface of the recessed part 2 has an elastic shape with a right-angled triangular section. The member 3 is integrally formed, and the outer peripheral portion of the lower surface of the screen 4 is fixed to the horizontal upper surface of the elastic member 3 via the double-sided adhesive tape 5. In this case as well, even if an impact indicated by an arrow A is applied to the screen 4 from the outside, the elastic deformation of the elastic member 3 can prevent the screen 4 from being damaged at the impacted portion.

(Third embodiment)
FIG. 6 is a sectional view similar to FIG. 2 of a mobile phone as a third embodiment of the present invention. The cellular phone shown in FIG. 2 is different from the cellular phone shown in FIG. 2 in that an elastic member 3 having a square cross section is integrally formed in the middle of the inner wall surface of the concave portion 2 having a square cross section of the front case 1. This is a point where the outer peripheral portion of the lower surface of the screen 4 is fixed through a double-sided adhesive tape 5. In this case as well, even if an impact indicated by an arrow A is applied to the screen 4 from the outside, the elastic deformation of the elastic member 3 can prevent the screen 4 from being damaged at the impacted portion.

(Fourth embodiment)
FIG. 7 is a sectional view similar to FIG. 2 of a mobile phone as a fourth embodiment of the present invention. The cellular phone shown in FIG. 2 is different from the cellular phone shown in FIG. 2 in that an elastic member 3 having a T-shaped cross section is integrally formed in the center of the upper surface of the concave portion 2 having a rectangular cross section of the front case 1 and in the middle of the inner wall surface. This is that the outer peripheral portion of the lower surface of the screen 4 is fixed to the upper surface of the member 3 with a double-sided adhesive tape 5. In this case as well, even if an impact indicated by an arrow A is applied to the screen 4 from the outside, the elastic deformation of the elastic member 3 can prevent the screen 4 from being damaged at the impacted portion.

The material of the screen 4 is not limited to tempered glass but may be acrylic resin. Further, the present invention is not limited to a mobile phone, but a portable communication terminal device such as a PHS (Personal Handy-phone System), a PDA (Personal
(Data Assistance, Personal Digital Assistance) and portable information processing devices such as notebook computers, portable music players, digital cameras, and the like.

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

(Appendix 1)
The invention of Supplementary Note 1 includes a case having a rectangular frame shape having a concave portion on the inner peripheral portion of the upper surface, an elastic member provided in the concave portion of the case, and an outer peripheral portion of the lower surface on the upper surface of the elastic member via an adhesive layer A portable electronic device comprising a fixed screen.

(Appendix 2)
The invention of appendix 2 is the portable electronic apparatus according to appendix 1, wherein the screen is made of tempered glass.

(Appendix 3)
The invention of appendix 3 is the portable electronic device according to appendix 1 or 2, wherein the elastic member is made of rubber and is integrally formed in the concave portion of the case.

(Appendix 4)
The invention of appendix 4 is the portable electronic device according to any one of appendices 1 to 3, wherein the adhesive layer is a double-sided adhesive tape.

(Appendix 5)
The invention of appendix 5 is the portable electronic device according to any one of appendices 1 to 4, wherein a touch panel is provided on the lower surface excluding the outer peripheral portion of the screen via an adhesive layer. .

DESCRIPTION OF SYMBOLS 1 Front case 2 Recessed part 3 Elastic member 4 Screen 5 Double-sided adhesive tape 6 Touch panel 7 Adhesive layer 8 Sheet metal 9 Rear case 10 Battery pack 11 Liquid crystal display panel module

Claims (5)

  A case having a rectangular frame shape and having a concave portion on the inner peripheral portion of the upper surface, an elastic member provided in the concave portion of the case, and a screen having the lower peripheral portion fixed to the upper surface of the elastic member via an adhesive layer A portable electronic device characterized by comprising.   The portable electronic device according to claim 1, wherein the screen is made of tempered glass.   3. The portable electronic device according to claim 1, wherein the elastic member is made of rubber, and is provided in the concave portion of the case by integral molding.   The portable electronic device according to claim 1, wherein the adhesive layer is a double-sided adhesive tape.   5. The portable electronic device according to claim 1, wherein a touch panel is provided on an under surface of the screen excluding an outer peripheral portion via an adhesive layer.

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