JP2014050082A - Portable terminal device - Google Patents

Abstract

In a portable terminal device having an exterior panel decorated on the back surface, a built-in component can be pressed by the inner panel, and a predetermined defect caused by a gap between the exterior panel and the inner panel is avoided.
The portable terminal device includes a housing (30) having an opening, an exterior panel (10) having a decoration on the back surface and being fixed to the opening, and an inner panel (inside the opening being fixed). 20) and a rib (R1 to R6) provided on the inner panel and hitting the back surface of the exterior panel.
[Selection] Figure 1

Description

  The present invention relates to a mobile terminal device having an exterior panel.

  There has been a portable terminal device having a structure in which an exterior cover covers an opening of a housing. And the rib etc. which hold down the internal component accommodated in a housing | casing may be provided in the back surface of an exterior cover. For example, when the wiring connector of the circuit board is pressed by the rib or the like, it is possible to prevent the wiring connector from coming off due to an impact or the like. In addition, the flexible cable is pressed by the rib or the like, so that it is possible to prevent the vibration of the apparatus from being transmitted to the flexible cable and generating chatter noise. Moreover, the contact pressure of a spring contact is securable by the vicinity of the spring contact which electrically connects a circuit board and another electric component with a rib etc., for example.

  As a technique related to the present invention, Patent Document 1 discloses a mobile phone having a structure in which a waterproof plate is sandwiched between an electric circuit component built in the device and a rear case.

JP 2009-005326 A

  The present inventors configure the exterior cover from a transparent or translucent panel (referred to as an exterior panel) and apply decoration (decorative printing, painting, in-mold processing, etc.) to the back surface of the exterior panel, so that the appearance is beautiful. We are considering the realization of the exterior.

  However, the exterior panel with decoration on the back surface has a problem that a structure for pressing a built-in component such as a rib cannot be provided on the back surface.

  On the other hand, it can be considered to cope with this problem by providing another panel (referred to as an inner panel) for holding the built-in component on the back side of the exterior panel.

  However, in the configuration in which the inner panel is arranged on the back side of the outer panel, it is necessary to secure a slightly larger clearance between the outer panel and the inner panel in consideration of tolerances. If there is no clearance, the exterior panel is pushed from the back side to the inner panel, and the fixing strength of the exterior panel is lowered. In particular, in a configuration in which the exterior panel is bonded to the housing with a double-sided adhesive tape or the like to ensure water-stopping, it becomes impossible to apply an adhesive pressure necessary for water-stopping to the bonding portion.

  Therefore, in this configuration, there arises a problem that the thickness of the apparatus increases as the clearance increases.

  Moreover, in the individual | organism | solid with a small clearance of an exterior panel and an inner panel, there exists a subject that an exterior panel and an inner panel will contact partially by vibration or audio | voice output, and a chatter noise will arise.

  Furthermore, if there is a gap on the entire surface between the exterior panel and the inner panel, there arises a problem that dust or dust or the like easily enters between them. In particular, when there is a part that transmits light from the back side of the exterior panel and outputs the light, there is a problem that the dust is clearly visible from the outside when the dust enters the part.

  An object of the present invention is to provide a portable terminal device having an exterior panel decorated on the back surface, which can hold a built-in component by the inner panel, and has some disadvantages due to a gap between the exterior panel and the inner panel. It is to avoid.

  A portable terminal device according to an aspect of the present invention includes a housing having an opening, an exterior panel having a decoration on the back surface and fixed to the opening, an inner panel fixed to the inside of the opening, and the inner panel And a rib that hits the back surface of the exterior panel.

  According to the present invention, it is possible to realize a visually attractive configuration by the exterior panel, and further, it is possible to hold the internal components by the inner panel, and due to the gap between the exterior panel and the inner panel due to the rib of the inner panel. Disadvantages can be avoided.

The disassembled perspective view which shows the portable terminal device of embodiment of this invention The top view which shows the state which removed the exterior panel and the inner panel from the portable terminal device Plan view showing the front of the inner panel A perspective view showing the back side of the inner panel Plan view showing the back of the exterior panel Conceptual diagram explaining the rib height of the inner panel Sectional drawing explaining arrangement | positioning of an exterior panel and an inner panel The top view which shows the front of the inner panel of the modification 1 of embodiment of this invention The top view which shows the back surface of the exterior panel of the modification 1 of embodiment of this invention

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an exploded perspective view showing a mobile terminal device according to an embodiment of the present invention. FIG. 2 is a plan view showing a state in which the exterior panel and the inner panel are removed from the portable terminal device. FIG. 3 is a plan view showing the front of the inner panel. FIG. 4 is a perspective view showing the back side of the inner panel.

  As shown in FIG. 1, the portable terminal device according to the embodiment of the present invention rotatably connects the first component 1, the second component 2, and the first component 1 and the second component 2. This is a folding portable terminal device having a hinge 3.

  The 1st structure part 1 is a structure which has the display part and the subdisplay part 41 mainly. The display unit is provided on a surface facing the second component unit 2 in a state where the mobile terminal device is folded. The sub display unit 41 is provided at a position where the mobile terminal device can be seen from the outside in a folded state.

  The second component 2 mainly includes a plurality of operation keys, a battery pack, and a main electronic board.

  Hereinafter, the first component 1 will be described in detail.

  As shown in FIG. 1, the first component 1 includes a housing 30, a built-in component 40, an inner panel 20, and an exterior panel 10.

  The housing 30 is provided with an opening 31 that is closed by the exterior panel 10 on one side, and accommodates the built-in component 40 therein. Note that an opening is also provided on the display unit side of the housing 30, and this opening is closed by the display panel.

  The housing 30 is provided with a seating surface 32 around the opening 31 to which the exterior panel 10 is bonded. The casing 30 is provided with a locked portion 34 for fixing the inner panel 20 inside the opening 31.

  The built-in component 40 (see FIGS. 1 and 2) is not particularly limited, but includes an electronic board 42, a receiver 43 that outputs sound, a sub display unit 41, an illumination 44, an antenna (not shown), and an illustration (not shown). The display part is included. Of these, the sub display unit 41 and the illumination 44 correspond to light output components. A flexible cable (FPC: Flexible Printed Circuits) f that transmits signals to and from the electronic component, a flexible cable f that connects to the second component 2, and a cable are detachably connected to the electronic board 42. A connector c is provided. Further, the electronic substrate 42 may be provided with a spring contact that is electrically connected to an antenna or the like, for example.

  The exterior panel 10 (see FIG. 1) is a flat exterior component and is made of a transparent or translucent member such as glass or acrylic. Decorative printing, painting, and / or in-mold processing is applied to the back surface (the lower surface in FIG. 1) of the exterior panel 10 so that these decorations can be seen from the front side of the exterior panel 10. ing.

  A portion of the exterior panel 10 facing the sub display unit 41 and the illumination 44 has high transparency.

  The inner panel 20 (see FIGS. 1, 3, and 4) is a panel that is fixed inside the opening 31 of the housing 30 and covers the built-in component 40. The inner panel 20 is made of resin, for example.

  On the back side of the inner panel 20, as shown in FIG. 4, a structure for pressing each part of the built-in component 40 is provided. The pressing structure includes, for example, a protrusion 25 that presses a portion (in the vicinity of a spring contact) that requires contact pressure of the electronic substrate 42, a rib 26 that holds the slack of the flexible cable f, and a frame 27 that holds the edge of the sub display portion 41. In addition, a rib 28 for holding parts such as the receiver 43 is included.

  In addition, a locking portion (for example, a locking claw) 22 that engages with the locked portion 34 of the housing 30 is provided at the edge of the inner panel 20.

  Further, the inner panel 20 is provided with through holes h <b> 1 and h <b> 2 that expose the sub display portion 41 and the illumination 44. The inner panel 20 may be provided with a transparent window instead of the through holes h1 and h2.

  With such a configuration, the inner panel 20 is fixed inside the opening 31 of the housing 30. The built-in component 40 accommodated in the housing 30 is appropriately pressed by the pressing structure on the back side of the inner panel 20.

  As shown in FIGS. 1 and 3, the upper surface of the inner panel 20 has a structure in which low ribs R1 to R6 are formed on a plane. As will be described in detail later, the flat portions other than the ribs R1 to R6 are disposed away from the back surface of the exterior panel 10, and the ribs R1 to R6 are provided on the back surface of the exterior panel 10 with a double-sided adhesive tape X (see FIG. 5). It is contacted and bonded via.

  The ribs R1 to R6 include a rib R1 extending in the vertical direction, ribs R2 and R3 extending in the horizontal direction, a rectangular rib (bulging portion) R4, a rib R5 surrounding the through hole h2, and a rib R6 surrounding the through hole h1. included. Here, the long side direction of the exterior panel 10 is referred to as a vertical direction, and the short side direction is referred to as a horizontal direction. The ribs R1, R2, R4 to R6 are continuously formed so as to surround the center of the inner panel 20.

  The ribs R1 to R6 are all formed at the same height. In addition, when the back side of the exterior panel 10 has an unevenness | corrugation, you may give a difference to the height of rib R1-R6 according to this unevenness | corrugation.

  The ribs R <b> 1 to R <b> 6 are arranged in the middle from the end of the exterior panel 10 by a predetermined length or more.

  Specifically, as shown in FIG. 3, the distances L1 and L2 between the ribs R4 and R6 near the long side of the exterior panel 10 and the peripheral edge of the exterior panel 10 are 1/10 or more of the lateral width of the exterior panel 10. It is designed as follows. Further, the distances L3 and L4 between the ribs R2 and R3 near the short side of the exterior panel 10 and the peripheral edge of the exterior panel 10 are designed to be 1/10 or more of the vertical width of the exterior panel 10.

  As described above, by providing the ribs R1 to R6 in the middle from the end of the exterior panel 10, even when the ribs R1 to R6 push the exterior panel 10 from the back side, the joint portion between the exterior panel 10 and the housing 30 ( The force applied to the seating surface 32) can be weakened. In addition, in order to raise this effect | action more, it is good to arrange | position rib R1-R6 more than the length of 1/5 of the width | variety of the exterior panel 10, and the center from the edge of the exterior panel 10.

  FIG. 5 is a plan view showing the back surface of the exterior panel 10.

  A double-sided adhesive tape X (shown by hatching in FIG. 5) is attached to the back surface of the exterior panel 10. The double-sided adhesive tape X is affixed in a range that substantially overlaps the ribs R1 to R6 of the inner panel 20. Further, the double-sided adhesive tape X is affixed in a range that overlaps the entire circumference of the outer periphery of the exterior panel 10 and the seat surface 32 of the housing 30. The double-sided adhesive tape X may be provided so as not to overlap a part of the ribs R1 to R6.

  The double-sided adhesive tape X has a slight thickness and an elasticity that slightly deforms and returns in the thickness direction.

  FIG. 6 is a conceptual diagram illustrating the height of the ribs of the inner panel.

  As illustrated in FIG. 6, the ribs R <b> 1 to R <b> 6 are designed to have the same height as the seating surface 32 of the housing 30 when the lowest arrangement is made due to the tolerance t.

<Internal panel rib action>
FIG. 7 is a cross-sectional view illustrating the arrangement of the exterior panel and the inner panel.

  The exterior panel 10 is fixed to the seat surface 32 of the housing 30 by being adhered with a double-sided adhesive tape X. By this adhesion, a water stopping action of the joint portion between the exterior panel 10 and the housing 30 is obtained.

  In a state where the exterior panel 10 is fixed, the ribs R1 to R6 abut on the back surface of the exterior panel 10 via the double-sided adhesive tape X as shown in FIG. However, the abutment of the ribs R1 to R6 is performed only in a small range on the panel surface. Therefore, the abutment of the ribs R1 to R6 does not apply a large force to the exterior panel 10, and the joint portion between the exterior panel 10 and the seat surface 32 is not peeled off or the adhesive force is not reduced. .

  In addition, since the inner panel 20 positively abuts the ribs R1 to R6 on the back surface of the exterior panel 10 via a double-sided adhesive tape, vibration or sound output is transmitted to the inner panel 20 and a chatter noise is generated. Is prevented.

  Further, in the mobile terminal device of the present embodiment, since the inner panel 20 positively contacts the outer panel 10, there is no rib, and there is always a clearance between the inner panel 20 and the outer panel 10. In comparison, the device can be made thinner. In addition, even if the inner panel 20 has the ribs R <b> 1 to R <b> 6, the inner panel 20 can ensure a certain level of strength even if the plane portion is thin.

  By the way, if a configuration in which the exterior panel 10 and the inner panel 20 are bonded on a wide surface with a double-sided adhesive tape or the like is adopted, the exterior panel 10 and the inner panel 20 are changed due to a change in pressure exerted on the exterior panel 10. Repeated peeling and bonding of the adhesion site. And the subject that abnormal sound (adhesive sound) generate | occur | produces by repetition of this peeling and adhesion | attachment arises. However, in the mobile terminal device according to the present embodiment, adhesion between the exterior panel 10 and the inner panel 20 is performed only at the portions of the ribs R1 to R6 that are narrow in width and small in area. Therefore, the generation of such abnormal noise can be avoided.

  Further, in the mobile terminal device according to the present embodiment, a portion facing the illumination 44 and the sub display unit 41 is surrounded by ribs R5 and R6. Therefore, it is possible to avoid the inconvenience that dust enters the portion and the dust can be seen from the outside.

(Modification 1)
FIG. 8 is a plan view showing the front of the inner panel of Modification 1 of the embodiment of the present invention. FIG. 9 is a plan view showing the back surface of the exterior panel of Modification 1 of the embodiment of the present invention.

  In the first modification of the present embodiment, instead of the ribs R1 to R6 of the inner panel 20, a narrow double-sided adhesive tape (in the same position as the ribs R1 to R6) between the inner panel 20A and the exterior panel 10 ( X2 is provided.

  A double-sided adhesive tape X3 for adhering to the seating surface 32 of the housing 30 is affixed to the back surface of the exterior panel 10 at the periphery.

  As these double-sided adhesive tapes X2 and X3, the same type may be employed, or different types such as different thicknesses may be employed.

  The upper surface of the inner panel 20A is designed to be disposed at a height that does not hit the back surface of the exterior panel 10 without the double-sided adhesive tape X2 while it hits the back surface of the exterior panel 10 via the double-sided adhesive tape X2. When the thick double-sided adhesive tape X2 is employed, the upper surface of the inner panel 20A is designed to be lower than the seating surface 32 of the housing 30 by the difference in thickness between the double-sided adhesive tapes X2 and X3.

  With this configuration, the inner panel 20A is in contact with and adhered to the back surface of the exterior panel 10 via the double-sided adhesive tape X2 in a state where the exterior panel 10 is fixed.

  According to the mobile terminal device of the first modification, an abnormal noise (adhesive sound) is generated due to repeated peeling and bonding of the bonding portion between the outer panel 10 and the inner panel 20A due to a change in pressure applied to the outer panel 10. There is a problem that can be.

  However, also in the mobile terminal device of the first modification, the inner panel 20A positively contacts the exterior panel 10 via the double-sided adhesive tape X2. Therefore, inconveniences such as generation of chatter noise caused by vibration of the inner panel 20A and intrusion of dust into the sub display unit 41 or the illumination 44 can be avoided.

  The embodiments of the present invention have been described above.

  In the above embodiment, the configuration in which the present invention is applied to a foldable portable terminal device has been described as an example. However, it is not necessary to be a folding type, and the present invention may be applied to a mobile terminal device having a single housing such as a so-called smartphone.

  Moreover, in the said embodiment, it demonstrated taking the case of the structure which occupies the substantially whole area of the one surface of a housing | casing as an exterior panel. However, the exterior panel may be configured to occupy only a partial range on one surface of the housing (for example, a half range excluding the battery lid).

  The present invention is applicable to portable terminal devices such as mobile phones, portable information devices, and portable music players.

DESCRIPTION OF SYMBOLS 10 Exterior panel 20, 20A Inner panel 30 Housing | casing 31 Opening 32 Seating surface 40 Built-in part 41 Subdisplay part 44 Illumination R1-R6 Rib X, X2, X3 Double-sided adhesive tape

Claims (8)

A housing having an opening;
An exterior panel having a decoration on the back and fixed to the opening;
An inner panel fixed inside the opening;
A rib provided on the inner panel and hitting the back surface of the exterior panel;
A portable terminal device comprising: The housing contains a light output component that outputs light through the exterior panel,
The rib is provided so as to surround the light output component.
The mobile terminal device according to claim 1. The rib is provided in the middle from the end of the exterior panel at least 1/10 of the width of the exterior panel.
The mobile terminal device according to claim 1. The ribs are provided on both sides of a center line that bisects the exterior panel vertically or horizontally,
The mobile terminal device according to claim 1. The housing has a seating surface around the opening,
The exterior panel is fixed by adhering the periphery of the exterior panel to the seating surface.
The mobile terminal device according to claim 1. With the front side of the exterior panel as the upper side and the back side as the lower side,
The upper surface of the inner panel is disposed lower than the seat surface,
The upper end of the rib is arranged at substantially the same height as the seat surface,
The mobile terminal device according to claim 5. Double-sided adhesive tape is affixed to the location where the rib of the exterior panel hits,
The mobile terminal device according to claim 1. A housing having an opening;
An exterior panel having a decoration on the back and fixed to the opening;
An inner panel fixed inside the opening;
Comprising
With the front side of the exterior panel as the upper side and the back side as the lower side,
The upper surface of the inner panel is disposed lower than the back surface of the exterior panel,
A part of the back surface of the exterior panel and a part of the top surface of the inner panel are bonded by an adhesive member,
Mobile terminal device.

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