JP3207079B2 - Portable communication device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cellular telephone, PH
The present invention relates to a housing structure of a portable communication device which is miniaturized so as to be easily carried, such as an S mobile device.

[0002]

2. Description of the Related Art A portable telephone accommodates a telescopic antenna and a built-in antenna in a housing. The housing is made of resin and the front housing and the rear housing are integrally formed, respectively, in order to wait for a call or perform a call while the antenna is housed.

[0003]

However, portable telephones are easily damaged by friction such as putting them in and out of pockets. In particular, characters indicating the function of each button are displayed in silk printing or the like on the operation input unit including the ten keys and arranged operation buttons, but are erased by friction.
In addition, if the liquid crystal display is damaged, it becomes difficult to see and becomes dirty.
In addition, there is a risk of falling when taking in and out.

A first object of the present invention is to make a housing of a portable communication device such as a portable telephone hard to be damaged and to increase strength. A second object is to achieve the first object without deteriorating antenna functions such as electric field strength and communication quality.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned prior art, the present invention relates to a portable communication device in which a part or the whole of a housing is placed at a position away from a fed antenna so as not to substantially affect a call. The housing is made of a metal material, and the portion of the housing other than the metal material is made of a resin material.

Further, in the portable communication device of the present invention, in a portable communication device having a housing made of a resin material, the power transmission antenna is provided so as not to substantially affect a call except at least around the power reception antenna in the housing. Attach a metal exterior panel to a remote location. This housing is provided with an operation button array portion at a position distant from the powered antenna so as not to substantially affect the call by the outer panel, and holes are provided for projecting the operation buttons on which the outer panel is arranged, respectively. A groove is formed in the vicinity of the hole in the shape of a character, graphic or symbol representing the function name of the operation button or the like, and is attached to the operation button array portion.

In the portable communication device of the present invention, the housing is made of a resin material. In the portable communication device, an antenna housing portion and an ear speaker portion are provided at an upper portion, and a liquid crystal display portion and an operation button array portion are provided below the housing. Are arranged in order,
A metal exterior panel that covers the liquid crystal display and the operation button array, exposes the liquid crystal, and has an opening that protrudes each operation button is attached.The positions of the liquid crystal display and the operation button array are determined by the exterior panel. It is separated from the antenna housing so as not to substantially affect the call. Further, sapphire glass for protecting the liquid crystal is arranged on the liquid crystal display section of the housing, and the housing is sandwiched by the exterior panel.

Further, in the portable communication device of the present invention, sapphire glass is attached to a window of a housing in which a liquid crystal is arranged.

Further, the exterior panel is fixed to the housing with a plurality of screws or pins to prevent floating from the housing surface.

Further, in sapphire glass, it is more costly to increase the strength by integrating a sapphire glass and a translucent high-strength plate such as tempered glass than to increase the strength by using sapphire glass alone. Is advantageous.
In this case, the sapphire glass is exposed to the outside, and the high-strength plate is disposed between the liquid crystal and the sapphire glass.

[0011]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a mobile phone for explaining one embodiment of the present invention. A housing 1 (1a is a front housing) made of resin, an aluminum panel 2, an ear speaker unit 3, a liquid crystal (LCD) display unit 4, a numeric keypad and An operation unit 5 in which various operation buttons are arranged, a microphone unit 6, an antenna cap 7,
The telescopic antenna knob 8 is indicated by a reference numeral. In addition, LCD
The display unit 4 is protected by a protective glass 9 in which sapphire glass and tempered glass are integrated. The housing 1 is made of resin not only on the front side but also on the back side. First, an antenna structure (see Japanese Patent Application No. 5-85406) will be described. The telescopic antenna knob 8 is used to draw out a half-wavelength rod-shaped antenna housed in a housing with a resin attached to the head of the half-wavelength rod-shaped antenna. The antenna cap 7 is a cap made of resin, and a quarter-wave spiral antenna is fixed in this portion. 1 /
The two-wavelength rod-shaped antenna passes through the quarter-wave spiral antenna and is drawn out and stored. Also, the antenna cap 7
When the half-wavelength rod-shaped antenna is damaged, it is removed for replacement, and a screw for screwing the antenna to the housing is cut inward. The power supply from the radio circuit inside the telephone is supplied to a built-in and fixed quarter-wave spiral antenna, and when the half-wavelength rod antenna is housed, the power is fed to a quarter.
Only the wavelength spiral antenna functions, and when the 1/2 wavelength rod-shaped antenna is pulled out, the lower end of the 1/2 wavelength rod-shaped antenna and the 1/4 wavelength spiral antenna are electromagnetically coupled to each other to form a half.
Functions as a wavelength antenna.

The housing 1 is made of a resin material so as not to greatly affect the above-mentioned antenna function and to prevent deterioration of communication quality and electromagnetic field strength. An aluminum panel 2 is attached to the center of the front housing 1a. The aluminum panel 2 is used to increase the strength of the housing, in particular, to prevent conspicuous scratches on the front portion and to prevent the disappearance of characters.
The purpose is to sandwich a protective glass 9 for protecting the D display unit 4. Sapphire glass is used outside the protective glass 9 to keep the LCD display unit 4 easy to see and beautiful for a long time.

The aluminum panel 2 is laid out below the ear speaker section 3 so as not to affect the above-mentioned antenna function and to deteriorate the communication quality and the electromagnetic field strength.

Each operation button of the operation section 5 is a projection integrally formed on a single translucent rubber sheet. The projection is fitted into each button hole of the rubber sheet from the inside of the front housing 1a. Only the portion protrudes from the surface. On the surface of each operation button, grooves were integrally formed in the form of letters, figures or symbols when forming the rubber sheet, and the grooves were colored. Characters, figures, or symbols are displayed not only on the operation buttons but also on the aluminum panel 2.

A hole is made in the aluminum panel 2 in the same manner as the front housing 1a to make each operation button protrude.
Grooves in the shape of letters, figures, or symbols related to the operation buttons to be protruded were formed around each hole by etching, and the grooves were colored. In the case of a mobile phone, a single operation button is used for various functions to reduce the number of buttons in order to reduce the size and cost, so that a large number of displays are required.

Next, the mounting structure of the aluminum panel 2 and the protective glass 9 will be described with reference to FIGS. FIG. 2 is an exploded perspective view of a housing and an aluminum panel according to one embodiment of the present invention, and shows the order in which the aluminum panel 2 is attached to the front housing 1a while holding the protective glass 9 therebetween.
On the front housing 1a, a step portion 10 on which the protective glass 9 is disposed and a step portion 11 on which the aluminum panel 2 is disposed are formed. The step portion 10 is opened for disposing the liquid crystal inside the front housing 1a. The step portion 11 has a button hole for projecting each operation button as described above.

First, a double-sided tape 13 is applied to the step 10 before the aluminum panel 2 is attached. Next, the protective glass 9 is attached to the step 10 together with the trimming frame 14. FIG. 3 is a cross-sectional view of the step portion 10, showing a state in which the tempered glass 9 b is inside, the sapphire glass 9 a is outside, and these are stuck inside the step portion 10 by the trimming frame 14. In this case, since the sapphire glass 9a becomes very expensive if a process of forming an R on the corner is performed similarly to the resin material, a process such as chamfering the corner is not performed. Therefore, the sapphire glass 9a having the sharp corners is
If it is stuck to 0, the design will be damaged, so it is necessary to trim around the glass, and the trimming frame 14 is used. Further, it is preferable that the sapphire glass 9a be raised above the height of the trimming frame 14 in terms of design. Slightly smaller sapphire glass 9a in eye frame
Is fitted. Sapphire glass 9a and tempered glass 9b
Stick it together. In order to easily increase the accuracy of the attachment positions of different sizes, and to shorten the manufacturing time, the attachment of the trimming frame 14 is performed.
First, sapphire glass 9a was fitted into the first-stage frame, and then tempered glass 9b coated with an optical adhesive was fitted into the first-stage frame to be integrated. The integration of the sapphire glass 9a and the tempered glass 9b greatly improves impact resistance and the like.

After the protective glass 9 can be adhered to the step 10 with the trimming frame 14, the aluminum panel 2
Install. The attachment was performed by thermocompression bonding. Further, pins 15 were pressed into four corners to prevent the aluminum panel 2 from floating. The role of the four pins 15 is to prevent the aluminum panel 2 from floating from the front housing 1a and to be one point in design.
The aluminum panel 2 presses down on the trimming frame 14, sandwiches the protective glass 9, and increases the mounting strength of the protective glass 9.

As described above, according to the present invention, it is effective to increase the strength of the housing, to prevent the housing from being damaged, and to prevent the characters from disappearing from the housing. In addition, these are realized without greatly affecting the antenna characteristics and without impairing the electric field strength and speech quality.

Although the embodiment of the present invention has been described above, the present invention is not limited to this, and can be appropriately realized based on the description in the claims.

[0021]

As described above, according to the present invention, the strength of the housing is increased, the housing is prevented from being damaged, and the characters are prevented from being erased from the housing. In addition, these are realized without greatly affecting the antenna characteristics and without impairing the electric field strength and speech quality.

[Brief description of the drawings]

FIG. 1 is a front view of a mobile phone showing one embodiment of the present invention.

FIG. 2 is an exploded perspective view of a main part of the mobile phone showing one embodiment of the present invention.

FIG. 3 is a sectional view of a main part of a mobile phone showing one embodiment of the present invention.

[Explanation of symbols]

 1: Housing 1a: Front housing 2: Aluminum panel 3: Ear speaker unit 4: Liquid crystal (LCD) display unit 5: Operation unit 6: Microphone unit 7: Antenna cap 8: Telescopic antenna knob 9: Protective glass 9a: Sapphire glass 9b : Tempered glass 12: Double-sided tape 13: Trimming frame 14: Pin

Claims (4)

(57) [Claims] 1. A portable communication device comprising a housing made of a resin material, wherein a metal exterior panel is attached to the housing at a position distant from a periphery of a power-supplied antenna. 2. An operation button array portion is disposed on the housing at a position distant from the periphery of the power-supplied antenna, and a hole for projecting each operation button of the operation button array portion is formed on the exterior panel. 2. A mobile phone according to claim 1, wherein a groove is formed in the shape of a character, graphic or symbol representing a function name of the operation button in the vicinity of the housing, and the exterior panel is attached to the operation button array portion of the housing. Communication equipment. 3. The housing has an antenna storage section and an ear speaker section at the top, a liquid crystal display section and an operation button arrangement section below the housing section, and a liquid crystal display section and an operation button arrangement section on the exterior panel. An opening is formed that covers the LCD and exposes the liquid crystal to project each operation button.
The portable communication device according to claim 1, wherein the exterior panel is attached to a liquid crystal display unit and an operation button array unit of the housing. 4. The portable communication device according to claim 3, wherein sapphire glass is disposed on the liquid crystal display unit, and the sapphire glass is held between the housing by the exterior panel.