JP2005123742A - Communication apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a communication apparatus provided with a key operation section easy in operation in spite of its small size. <P>SOLUTION: A printed circuit board (910), rubber (930), resin (940), and a key depression part (950) comprising a plurality of independent keys are sequentially arranged on a chassis (900), the resin (940) is formed to be a lattice, a rear middle part of each key of the key depression part (950) is connected to the rubber (930) via a space of the resin (940), and a rear side surrounding part of each key of the key depression part (950) is abutted on the frame of the lattice of the resin (940). <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a communication device such as a mobile phone.

  In recent years, mobile phone devices have been increasingly miniaturized, and the arrangement of components inside the mobile phone housing has also been increased in density.

  In this way, many techniques for miniaturizing a mobile phone have been proposed. For example, in Patent Document 1, a shield case is arranged on a substrate, a wiring pattern is printed on the outer surface of the shield case, and the casing is miniaturized. Technology has been proposed.

In addition, a normal cellular phone device is provided with a hole for projecting the numeric keypad in the housing, and each key pressing part formed of rubber rubber or the like is passed through the hole, and the other part of the key pressing part. Is configured to be covered with a casing.
Japanese Patent Application Laid-Open No. 2002-134873 (see pages 3 to 4, see FIG. 1). Japanese Patent Laying-Open No. 2003-229938 (see pages 3 to 4, see FIG. 2)

  As described in Patent Document 1, many techniques for reducing the size of a mobile phone have been proposed. However, in a conventional mobile phone, as described in Patent Document 2, a casing is provided between the keys of the numeric keypad. To prevent the rubber rubber that is the key from coming off.

  For this reason, a conventional mobile phone requires at least a key region and a housing region interposed between the keys, which has hindered downsizing of the mobile phone. .

The communication device according to claim 1 is a rubber rubber having a plurality of pressing portions that short-circuit contacts for a key input operation when pressed, and a flat portion that connects the plurality of pressing portions. And a sheet that is fixed to the flat portion of the rubber and reinforces the rubber.
A communication device according to a second aspect is the communication device according to the first aspect, wherein the sheet is a resin material.
The communication device according to claim 3 is the communication device according to claim 1 or 2, comprising a plurality of keys fixed to the respective pressing portions of the rubber, and a molding material cannot be interposed in the gap between the keys. It is characterized by being so narrow.

In the communication device of the present invention, a part (for example, the central portion) of the back surface of each key of the key pressing unit is connected to the rubber rubber. In addition, since rubber rubber is reinforced with resin, it is possible to prevent the key from coming off the casing without interposing a part of the casing between the keys as in the case of a conventional mobile phone. It is. For this reason, it is possible to arrange the keys adjacent to each other, and as a result, it is possible to reduce the size of the mobile phone.

  FIG. 1 is a front view of a communication apparatus (for example, a mobile phone apparatus) which is the apparatus of the present embodiment.

  In FIG. 1, a housing 100 includes a display unit 101 made of, for example, a liquid crystal display device, an antenna 102, a call key 103, a call end key 104, a numeric keypad 105, and a receiving unit 106.

  FIG. 2 is a rear view of the apparatus of this embodiment.

  In FIG. 2, a housing 100 includes an antenna 102, a flash 103, an imaging unit 104 made of, for example, a CCD (Charge Coupled Devices), a speaker 105 for outputting a ringtone or a ringing melody, a hole 710 for attaching a strap, A battery pack 107 and a charging terminal 108 are arranged.

  FIG. 3 shows a front view of the apparatus of this embodiment, a side view and a bottom view with respect to the front view.

  In the left side view (a), a function key group 110 including a power key 109, a mail start key, a memo key for storing voice during a call, and the like is arranged on the left side surface.

  On the other hand, in the right side view (b), a hole 710 for attaching a strap and an earphone cover 111 for an earphone jack are arranged on the right side surface.

  In the bottom view (c), a microphone 112 and a connector 113 used when connecting to an external personal computer or charging a battery of a mobile phone are arranged on the bottom side.

  FIG. 4 shows an exploded perspective view of the apparatus of this embodiment.

  In FIG. 4, the housing includes a first housing 200 and a second housing 300, and the first housing 200 includes an antenna 102, a speaker 105, and a battery pack 107.

  Inside the housing, two substrates, a first substrate 301 and a second substrate 302, are arranged. A plurality of LEDs (Light Emitting Diodes) 303, which are key lights, are arranged on the surface of the first substrate 301. On the other hand, on the back surface of the substrate 301, although not shown, various semiconductor elements such as resistors and capacitors, ICs (Integrated Circuits), pattern wiring, and connectors for electrically connecting to the substrate 302 are arranged. .

  On the surface of the second substrate 302, a display unit 101 made of, for example, a liquid crystal display device is disposed, and a connector 304 for electrically connecting to the first substrate 301 is disposed. On the other hand, on the back surface of the substrate 302, although not shown, a tuner, various semiconductor elements such as resistors and capacitors, and an IC (Integrated Circuit) are arranged.

  The first substrate 301 and the second substrate 302 are connected by a lead wire 305. The lead wire 305 connects the ground line of the first substrate 301 and the ground line of the second substrate 302.

  In addition, the speaker 106 and the imaging unit 104 are connected to the second substrate 302.

  As will be described in detail later, a chassis portion 400 to which a seal and a flexible printed board are fixed and a key operation unit 500 are sequentially arranged on the upper surface of the first substrate 301.

  A function key 110 and an earphone jack cover 111 are disposed on the second casing 300, and the second substrate 302 is fixed to the second casing 300 with screws 501 to 503.

  The first housing 200 is fixed to the second housing 300 with screws 801 to 805.

  The antenna 102 portion will be described in detail. FIG. 5 is a partially sectional transparent side view of the antenna 102 portion. As shown in FIG. 5, the antenna 102 is inserted into an insertion portion 600 made of, for example, resin, and a contact portion 601 made of, for example, metal is connected to the insertion portion 600. The insertion part 600 and the contact part 601 are inclined at a predetermined angle with respect to the second substrate 302 inside the housing. The contact portion 601 is for electrically connecting the antenna 102 and the second substrate 302 and transmitting a signal transmitted and received by the antenna 102 to the second substrate 302.

  The elastic body 602 is made of rubber, for example, and prevents the antenna 102 and the second substrate 302 from being electrically connected. Further, since the elastic body 602 has elasticity, the rear portion of the elastic body 602 can be disposed substantially in parallel with the second substrate 302, and the front portion has a predetermined angle with respect to the second substrate 302. It is possible to be located at. Note that portions of the antenna 102 where the metal is exposed are portions 102a and 102b shown in FIG. 1, and the portion 102a contacts the contact portion 601 when the antenna 102 is extended. On the other hand, in a state where the antenna 102 is inserted into the housing, the metal portion 102 b comes into contact with the contact portion 601. As described above, in a state where the antenna 102 is inserted into the housing, if the elastic body 602 is not provided, the metal portion 102a and the second substrate 302 are in electrical contact with each other, and there is a possibility that the circuit is destroyed. The elastic body 602 is for preventing the metal portion 102a and the second substrate 302 from being in electrical contact when the antenna 102 is inserted into the housing.

  In FIG. 5, when the antenna 102 is housed in the second housing 200, the antenna 102 is elastic in a state in which the bendable rod antenna portion 102 c is bent along the elastic body 602 and substantially parallel to the second substrate 302. Housed in body 602. On the other hand, when the antenna 102 is extended, the metal portion 102a of the antenna 102 is attached to the second casing 200 so that the antenna 102 is inclined with respect to the second substrate 302 when the antenna 102 is extended. The transmission / reception characteristics of the antenna 102 can be improved.

  The elastic body 602 may be formed of a material that cannot be bent, such as a resin. However, in such a case, the vicinity of the contact portion 601 of the elastic body 602 or the substantially middle position is arranged at a predetermined angle with respect to the second substrate 302, and the rear end portion of the elastic body 602 is It is necessary to arrange so as to be substantially parallel to the circuit board.

FIG. 6 is a cross-sectional view of the apparatus of this embodiment. As illustrated in FIG. 6, a first housing 301 and a second housing 302 on which the display unit 101 and the tuner 114 are mounted are arranged in a step shape inside the housing. The first housing 301 and the second housing 302 are connected by a connector 304 and a connector 306. A semiconductor element 115 is disposed on the second substrate 302, and an elastic body 116 made of, for example, sponge, resin, or rubber is disposed on the semiconductor element 115. Further, semiconductor elements 307 and 308 are also disposed on the first substrate 301, and elastic bodies 309 and 310 made of, for example, sponge, resin, or rubber are disposed on the semiconductor elements 307 and 308. The elastic bodies 116, 309, and 310 are arranged to fill a gap between the circuit board and the housing. Since the elastic bodies 116, 309, and 310 are arranged, the user can use the mobile phone. Even when dropped, it is possible to prevent the circuit board from wobbling inside the housing, the connectors 302 and 306 from being detached from each other, the liquid crystal display device 101 and the inside of the housing from being rubbed, and the liquid crystal display device 101 from being damaged. It is.
In contrast to the conventional mobile phone device in which one substrate is arranged inside the housing, in this embodiment device, since the two substrates 301 and 302 are arranged in a stepped shape, the housing and the circuit boards 301 and 302 A space will be created between the two. In order to fill such a space, it is considered that the elastic bodies 116, 309, and 310 are arranged in the simplest structure and can withstand external impacts.

  In addition, when the mobile phone is further downsized, there may be a case where a place for stopping the screw cannot be secured inside the mobile phone. Even in such a case, it is possible to prevent the substrates 301 and 302 from wobbling inside the housing simply by disposing the elastic bodies 116, 309, and 310.

  The elastic bodies 116, 309, and 310 are not necessarily arranged on the semiconductor element, and can be arranged on the board or in a space inside the housing where no components are arranged.

  Next, the part through which the strap of the apparatus of this embodiment is passed will be described.

  As shown in FIG. 4, a first hole 700 for passing a strap is formed in the first housing 200, and a second hole 710 is formed in the second housing 300.

  A third hole 720 is formed below the first hole 700, and the hole of the first hole 700 and the hole of the third hole 720 are continuous.

  More specifically, as shown in FIG. 7A, when the first casing 200 and the casing 300 are fitted together (the first casing 200 is fitted in the direction of arrow A in the figure), FIG. ), The entrance of the first hole 700 matches the entrance of the second hole 710. Since the second hole portion 710 and the third hole portion 720 are continuous, the strap can be attached to the mobile phone by passing the strap string 730 through the hole portions 710 and 720.

  As shown in FIG. 1, the first hole 700 is fitted into the recess 740 by providing the second substrate 302 with a recess 740.

  In a normal mobile phone device, a strap hole is provided in only one housing. However, in a small mobile phone device such as the device of this embodiment, a housing is provided even if a hole is provided in only one housing. Because there is no width of the thickness of the strap can not pass. For this reason, in this embodiment apparatus, a hole is provided in one casing and a hole is also provided in one of the casings so that the holes can be matched and the strap string can be passed.

  Next, the key part will be described.

  FIG. 8 is an exploded perspective view of the key 500 portion.

In FIG. 8, for example, a chassis 900 made of stainless steel or aluminum, a flexible printed circuit board 910 on which a key switch or the like is patterned, a sticker 920 having adhesive on both sides, and a key switch 911 formed on the printed circuit board 910 are pressed. A rubber rubber 930 in which a plurality of convex portions 931 are formed, and a resin 940, for example, a key pressing portion 950 made of resin, are sequentially stacked.
Further, the resin 940 is fixed to the rubber rubber 930 by an adhesive or the like, but an adhesive is attached to the lattice portion of the resin 940 to fix the resin 940 to the rubber rubber 930.
Fifteen keys (on key 103, off key 104, ten key 105, and clear key shown in FIG. 1) of the key pressing unit 950 are one key that is separated from each other (in FIG. 8, 15 keys are Each key is fixed to a convex portion 931 formed on the rubber rubber 930 (although it is connected and illustrated as if it were one solid).

  If the keys of the key pressing unit 950 are integrated, the adjacent keys are continuous. Therefore, when one key is pressed, the other adjacent keys are also pressed. The problem that it is not possible arises. However, in this embodiment, each key is formed separately, and the resin 940 is formed in a lattice shape. Therefore, even if one key is pressed, the pressed key is surely pressed. At the same time, the grid-like portion of the rubber rubber 930 absorbs the pressing force and does not affect other adjacent keys by pressing the key.

  Further, the rubber rubber 930 is formed in a lattice shape in this way, and the upper surface of the rubber rubber 930 is fixed to the back surface side of the lattice-shaped portion with an adhesive. An adhesive is applied to the back side of the lattice-like portion excluding the portion, and a seal 920 made of, for example, polyethylene terephthalate is fixed to the rubber rubber 930. Each key is fixed to the convex portion 931 of the rubber rubber 930 with an adhesive. For this reason, the central portion of the resin 940 does not float.

  9 is a cross-sectional view taken along line B-B ′ shown in FIG. 1, and FIG. 10 is a partial enlarged cross-sectional view of a portion C in FIG. 9.

  In FIG. 10, the end portion of the resin 940 has a shape protruding upward and downward, and the portion adjacent to the key rubber 930 of the second housing 300 is curved in a substantially U shape. Further, a chassis 900 is disposed below the resin 940, and an end portion of the chassis 900 has a shape protruding upward.

  As shown in FIG. 10, the resin 940 to which the rubber 920 is attached is detached from the casing by fitting the portion protruding upward of the resin 940 and the portion protruding downward of the second casing 300. Is preventing. In addition, since the portion protruding above the chassis 900 and the portion protruding below the second casing 300 (substantially U-shaped portion) sandwich the resin 940, the resin 940 is detached from the casing. Is preventing.

  The resin 940 is affixed to the rubber rubber 930. Further, since the key pressing portion 950 is affixed to the rubber rubber 930, the key pressing portion 950 prevents the resin 940 from being detached from the casing. It will be prevented from coming off the casing.

  Conventionally, for example, as shown in FIG. 1 of Patent Document 2 described in the background art, the key pressing portion is configured to be fitted into the housing. However, in this embodiment device, the key is a conventional mobile phone. Because it is adjacent to the device, it is not possible to secure a space for interposing the cellular phone casing between the keys, that is, the key pressing part can be removed by the casing as in the past. Can not be prevented. However, with the structure described above, it is possible to prevent the key pressing unit 950 from coming off the casing even in a small and thin mobile phone device.

  As described above, the lattice portion (sheet shape) of the resin 940 and the seal 920 are fixed to the lattice portion of the rubber rubber 930. As a result, the rubber rubber is reinforced and the holding force of the key is increased. The material of the resin 940 and the seal 920 is not limited to the resin, and may be a metal.

It is a front view of the Example apparatus formed by applying this invention. It is a rear view of a present Example apparatus. It is the side view and bottom view of an Example apparatus. It is a disassembled perspective view of a present Example apparatus. It is a partial cross section side view of the antenna 102 part. It is sectional drawing of a present Example apparatus. It is a perspective view of a present Example apparatus. It is a disassembled perspective view of a present Example apparatus. It is sectional drawing of a present Example apparatus. It is a partial expanded sectional view of a present Example apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 102 Antenna 301 1st board | substrate 302 2nd board | substrate 600 Insertion part 601 Contact part 602 Elastic body 900 Chassis 910 Printed circuit board 920 Seal 930 Rubber rubber 940 Resin 950 Key press part

Claims (3)

A rubber rubber having a plurality of pressing portions for short-circuiting contacts for key input operation by being pressed, and a flat portion connecting the plurality of pressing portions,
A communication apparatus comprising: a sheet that is fixed to a flat portion of the rubber and reinforces the rubber. The communication device according to claim 1, wherein the sheet is a resin material. The communication device according to claim 1 or 2,
A communication device comprising a plurality of keys fixed to respective pressing portions of the rubber, wherein the gaps between the keys are so narrow that no molding material can intervene.

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