JP2009239683A - Communication equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide communication equipment in which the increase of number of components and the increase of assembling man-hour are suppressed by forming an antenna portion in a part of a reinforcing member. <P>SOLUTION: A mobile telephone 1 includes an operation unit side housing 2 having a key hole 14a, a key sheet 40C arranged in the operation unit side housing 2, a conductive key frame 40B arranged between the operation unit side housing 2 and the key sheet 40C having a hole portion 14c, an input operation key member 14b arranged so as to be exposed outside through at least the key hole 14a in one side face of the key sheet 40C, an antenna portion 108 for transmitting/receiving in the shape of loop arranged in the opposite side of the key sheet 40C, formed in a part of the key switch 51 and the key frame 40B, being capable of transmitting/receiving a signal in a predetermined frequency band, and an RFID portion 101 to process the signal transmitted/received by the antenna portion 108 for transmitting/receiving, arranged in the operation unit side housing 2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

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

  Conventionally, as a mobile phone as a communication device, a key top as an operation member, a key sheet provided with the key top, a key frame as a reinforcing member, and a key switch arranged corresponding to the key top, An electronic device having an antenna is known (see Patent Document 1).

In recent years, mobile phones and the like have been required to be smaller and thinner. In particular, since communication devices such as mobile phones are carried by users, there is a strong demand for downsizing and thinning. In addition, due to high functionality in communication devices such as mobile phones, there are cases where antennas are housed and arranged inside mobile phones.
JP 2007-73445 A

  However, in communication devices, while an antenna is an essential configuration, it has also been an obstacle to downsizing.

  An object of this invention is to provide the communication apparatus which can achieve size reduction and thickness reduction even if it has an antenna.

  In order to solve the above-described problem, a communication device according to the present invention includes a housing in which an opening is formed, a flexible sheet member disposed in the housing, and at least the outside through the opening. An operating member disposed between the casing and the sheet member so as to be exposed, a conductive reinforcing member disposed between the operating member and the sheet member, and the reinforcing member in the sheet member A switch member disposed on a side opposite to the operation member and a position corresponding to the operation member, a loop-shaped antenna portion formed in a part of the reinforcing member and capable of transmitting and receiving signals, and disposed in the housing. And a signal processing unit that processes a signal transmitted and received by the antenna unit.

  Moreover, in the communication device, it is preferable that the antenna unit is formed on an end side of the casing of the reinforcing member.

  In the communication device, it is preferable that a circuit board on which the signal processing unit is mounted is disposed on a side of the switch member opposite to the reinforcing member side.

  In the communication device, it is preferable that a reference potential portion is formed inside the casing, and the reinforcing member is electrically connected to the reference potential portion.

  In the communication device, a reference potential portion is formed in the housing, and a conductive material electrically connected to the reference potential portion is provided between the switch member and the circuit board. Preferably, a case member is disposed, and the reinforcing member is electrically connected to the case member and electrically connected to the reference potential portion via the case member.

  In the communication device, it is preferable that the antenna unit is fixed to the sheet member.

  ADVANTAGE OF THE INVENTION According to this invention, the communication apparatus which can achieve size reduction can be provided even if it has an antenna by forming an antenna part in a part of reinforcement member.

  The best mode for carrying out the present invention will be described below with reference to the drawings. Hereinafter, although the mobile phone 1 will be described as a communication device, the present invention is not limited to this. For example, it may be a PHS (Personal Handyphone System), a PDA (Personal Digital Assistant), a portable navigation device, a notebook personal computer, or the like.

  With reference to FIG. 1, a basic structure of a mobile phone 1 as a communication device will be described. FIG. 1 shows an external perspective view of the cellular phone 1 in an opened state. As shown in FIG. 1, the mobile phone 1 includes an operation unit side body 2 (housing) and a display unit side body 3. The operation unit side body 2 and the display unit side body 3 are connected so as to be openable and closable via a connecting part 4 having a hinge mechanism. Specifically, the upper end portion of the operation unit side body 2 and the lower end portion of the display unit side body 3 are connected via a connecting portion 4. Thereby, the cellular phone 1 can relatively move the operation unit side body 2 and the display unit side body 3 which are connected via the hinge mechanism. That is, in the mobile phone 1, the operation unit side body 2 and the display unit side body 3 are opened (opened), or the operation unit side body 2 and the display unit side body 3 are folded. Can be brought into a closed state. Here, the closed state is a state in which both housings are arranged so as to overlap each other, and the open state is a state in which both housings are arranged so as not to overlap each other.

  The outer surface of the operation unit side body 2 includes a front case 2a and a rear case 2b. The operation unit side body 2 exposes, on the front case 2a side, an operation key group 11 and a voice input unit 12 as a microphone to which a voice uttered by a user of the mobile phone 1 is input. Configured.

  The operation key group 11 includes a function setting operation key 13 for operating various functions such as various settings, a telephone book function, and a mail function, an input operation key 14 for inputting numbers of telephone numbers, characters such as mail, and the like. The operation key 15 is a decision operation key 15 as an operation member for performing various operations and scrolling in the up / down / left / right directions. Each key constituting the operation key group 11 has a predetermined function according to the open / close state of the operation unit side body 2 and the display unit side body 3, various modes, or the type of the activated application. Assigned (key assignment). Then, when the user presses each key, an operation corresponding to the function assigned to each key is executed.

  The voice input unit 12 is disposed on the outer end side opposite to the connection unit 4 side in the longitudinal direction of the operation unit side body 2. That is, the voice input unit 12 is arranged on one outer end side when the mobile phone 1 is in the open state.

  An interface (not shown) for communicating with an external device (for example, a host device) is disposed on one side surface of the operation unit side body 2, and the interface is covered with a cap 16. . On the other side surface of the operation unit side body 2, a side key (not shown) to which a predetermined function is assigned and an interface (not shown) for inserting and removing an external memory are arranged. The interface is covered with a cap 31.

  The outer surface of the display unit side body 3 includes a front case 3a and a rear case 3b. The front case 3a in the display unit side body 3 is configured to expose a display unit 21 for displaying various types of information and a voice output unit 22 as a receiver for outputting the voice of the other party of the call. The Here, the display unit 21 includes a liquid crystal panel, a drive circuit that drives the liquid crystal panel, and a light source unit such as a backlight that emits light from the back side of the liquid crystal panel.

  Next, the internal structure of the operation unit side body 2 and the display unit side body 3 will be described with reference to FIGS. 2 and 5. FIG. 2 is an exploded perspective view of members built in the operation unit side body 2. FIG. 5 is an exploded perspective view of members built in the display unit side body 3.

  As shown in FIG. 2, the operation unit side body 2 includes a front case 2a, a key structure 40, a flexible wiring board 50, a case body 60, a reference potential pattern layer, and a module for processing a high frequency signal (for example, A circuit board 70 including various electronic components such as an RFID unit 101 described later, a rear case 2b including a battery lid 2c, and a battery 80.

  The front case 2a and the rear case 2b are disposed such that the concave inner surfaces face each other, and are joined so that the outer peripheral edges thereof overlap each other. Further, the key structure 40, the flexible wiring board 50, the case body 60, and the circuit board 70 are built in between the front case 2a and the rear case 2b. That is, the case body 60 is laminated so as to cover the circuit board 70, the flexible wiring board 50 is laminated on the upper surface side of the case body 60, and the key structure portion 40 is disposed on the upper surface of the flexible wiring board 50. Laminated.

  In the front case 2a, key holes 13a, 14a, and 15a as first openings are formed on the inner surface of the front case 2a facing the display unit 21 of the display unit side body 3 in a folded state. From each of the key holes 13a, 14a, 15a, the pressing surface of the function setting operation key member 13b constituting the function setting operation key 13, the pressing surface of the input operation key member 14b constituting the input operation key 14, and the determination operation key 15 The pressing surface of the determination operation key member 15b that constitutes is exposed. By pressing the exposed function setting operation key member 13b, the input operation key member 14b, and the determination operation key member 15b so as to depress, the metal dome described later is provided in each corresponding key switch 51, 52, 53. The apex of (saddle-like shape) is pressed and comes into electrical contact with the switch terminal.

  The key structure unit 40 includes an operation member 40A, a key frame 40B as a reinforcing member, and a key sheet 40C as a sheet member.

  The operation member 40A is composed of a plurality of key operation members. Specifically, it is configured by a function setting operation key member 13b, an input operation key member 14b, and a determination operation key member 15b. Each operation key member constituting the operation member 40A is bonded to the key sheet 40C with a key frame 40B described later interposed therebetween. As described above, the pressing surface of each operation key member bonded to the key sheet 40C is disposed so as to be exposed to the outside from each of the key holes 13a, 14a, 15a. Specifically, the function setting operation key member 13b is arranged so that the pressing surface is exposed through the key hole 13a. Further, the input operation key member 14b is arranged so that the pressing surface is exposed through the key hole 14a. Further, the determination operation key member 15b is disposed so that the pressing surface is exposed through the key hole 15a.

  The key frame 40B is a metallic plate-like member having a plurality of holes 14c as second openings. The key frame 40B is a reinforcing member for preventing adverse effects on the circuit board 70 and the like due to the pressing of the input operation key member 14b. The key frame 40B is a conductive member, and also functions as a member for releasing static electricity from the input operation key member 14b. The plurality of holes 14c formed in the key frame 40B are arranged so that convex portions 14d formed in the key sheet 40C described later are fitted. The input operation key member 14b is bonded to the convex portion 14d.

  The hole 14c is formed so as to be larger than the outer periphery of the convex portion 14d and smaller than the outer periphery of the input operation key member 14b. Since the hole portion 14c is formed in this way, the outer periphery of the input operation key member 14b is placed on the lattice portion 14e formed around the hole portion 14c. When the pressing surface of the input operation key member 14b is pressed, the pressing surface is bent and the outer periphery placed on the lattice portion 14e is supported by the lattice portion 14e. That is, the key frame 40 </ b> B can obtain the deformation necessary for the key operation and can suppress the excessive pressure applied to the circuit board 70.

  The key frame 40B is fixed to a case body 60 described later by a conductive fixing member inserted through the fixing hole 42. The key frame 40B is electrically connected to the case body 60. Here, the input operation key member 14b is electrically connected to the case body 60 via a lattice portion 14e with which the outer periphery of the input operation key member 14b abuts. Since the case body 60 is electrically connected to a reference potential pattern layer 75 as a reference potential portion as will be described later, the key frame 40B is electrically connected to the reference potential pattern layer 75 via the case body 60. Is done.

  A part of the key frame 40B is formed with a transmission / reception antenna unit 108 capable of receiving a signal of a predetermined frequency band. The transmitting / receiving antenna unit 108 is formed on the end side of the key frame 40B. Specifically, the transmission / reception antenna unit 108 is formed on the end side opposite to the connection unit 4 side in the operation unit side body 2. The transmitting / receiving antenna portion 108 is formed so as to extend from the region where the hole portion 14c corresponding to the input operation key member 14b is formed to the end side opposite to the connecting portion 4 side.

  The front end portion 108a of the transmitting / receiving antenna portion 108 formed in a part of the key frame 40B is supplied with power from a power supply terminal 107 disposed on the flexible wiring board 50 described later. The transmission / reception antenna unit 108 forms a transmission / reception antenna 109 (see FIG. 6) in cooperation with the power supply terminal 107. The configuration of the transmission / reception antenna 109 is schematically shown in FIG.

  The transmitting / receiving antenna portion 108 formed in a part of the key frame 40B is formed integrally with a region where the hole portion 14c corresponding to the input operation key member 14b is formed. That is, the key frame 40B including the transmission / reception antenna unit 108 is obtained by being integrally molded with one mold. Here, in the embodiment, the shape of the transmission / reception antenna unit 108 is a loop shape that goes around the key frame 40B, but is not limited thereto, and is formed into a predetermined shape based on a required transmission / reception function or the like. Is done. For example, as schematically shown in FIG. 4, it may be a loop shape that goes around the key frame 40B twice.

  The key sheet 40C is a flexible sheet-like member made of silicon rubber. As described above, a plurality of convex portions 14d are formed on the key sheet 40C. The plurality of convex portions 14d are formed on the surface of the key sheet 40C on the side where the key frame 40B is disposed. Each of the plurality of convex portions 14d is formed at a position corresponding to a key switch 52 described later.

  Each of the plurality of convex portions 14d is disposed so as to fit into each of the plurality of hole portions 14c formed in the key frame 40B. The input operation key member 14b is joined to the top surfaces of the plurality of convex portions 14d arranged so as to be fitted in the plurality of hole portions 14c by an adhesive.

  When the pressing surface of the input operation key member 14b joined to the convex portion 14d is pressed, the central portion of the pressing surface is bent. Thereby, the convex portion 14d is also deformed in the pressing direction. By this deformation, the key switch 52 arranged in the pressing direction of the convex portion 14d described later is in a connected state. The key frame 40B including the transmission / reception antenna unit 108 is configured to be fixable to the key sheet 40C via an adhesive or the like. That is, the relative position of the transmission / reception antenna unit 108 with respect to the operation unit side body 2 can be determined based on the arrangement position of the key sheet 40C, and the wobbling of the transmission / reception antenna unit 108 in the operation unit side body 2 can be determined. Is suppressed.

  The flexible wiring board 50 as a switch member has a plurality of key switches 51, 52, 53 arranged on the key sheet 40C side. Each of the plurality of key switches 51, 52, 53 is disposed at a position corresponding to each operation member 40A.

  The key switches 51, 52, and 53 arranged on the flexible wiring board 50 have a structure having a metal dome that is a three-dimensionally formed metal plate that is curved like a bowl. When the apex of the bowl-shaped shape is pressed, the metal dome contacts a switch terminal formed on an electric circuit (not shown) printed on the surface of the flexible wiring board 50 so as to be electrically connected. Composed. The flexible wiring board 50 is obtained by sandwiching wiring between a plurality of insulating films.

  The flexible wiring board 50 has a power supply terminal 107 that is disposed so as to abut on the transmission / reception antenna unit 108 described above. As described above, the power feeding terminal 107 constitutes the transmission / reception antenna 109 in cooperation with the transmission / reception antenna unit 108. The power supply terminal 107 is disposed on the same surface as the plurality of key switches 51, 52, 53. The power supply terminal 107 is disposed on the end side of the flexible wiring board 50. Specifically, the power feeding terminal 107 is disposed on the end side opposite to the connecting portion 4 side of the operation unit side body 2, which is a position where the power feeding terminal 107 can contact the transmitting / receiving antenna unit 108.

  The power supply terminal 107 in the present embodiment is a spring connector that includes a spring and a terminal part that are accommodated in a container part, and the terminal part is configured to be freely protruded and pushed. The terminal portion of the spring connector maintains a contact state following the movement of the transmitting / receiving antenna portion 108 to the thickness.

  Here, the flexible wiring board 50 is placed on a flat plate portion 61 in a case body 60 described later. Since the flexible wiring board 50 is placed on the flat plate portion 61 of the case body 60, the pressure and deflection caused by pressing each of the operation members 40A are not easily transmitted to the circuit board 70 disposed below the case body 60. .

  The case body 60 is a conductive member having a shape in which one wide surface of a thin rectangular parallelepiped is opened. The case body 60 has ribs formed substantially perpendicular to the opening side surface of the flat plate portion 61. The rib is formed to be equal to or sufficiently higher than the height of the highest electronic component among the various electronic components mounted on the circuit board 70. The ribs are formed on the periphery and inside of the flat plate portion 61 so as to correspond to the reference potential pattern layer 75 (reference potential portion). Specifically, the rib is formed so as to be disposed on the reference potential pattern layer 75 in a state where the case body 60 is placed on the circuit board 70. The case body 60 may be formed of a metal, or a skeleton formed of a resin and a conductor film formed on the surface thereof.

  The case body 60 is electrically connected to the reference potential pattern layer 75 by the bottom surface of the rib being in contact with the reference potential pattern layer 75. The case body 60 is electrically connected to the reference potential pattern layer 75 and has the same potential as the reference potential pattern layer 75. That is, the case body 60 functions as a shield case. The case body 60 serves as a shield case to prevent external noise from acting on various electronic components (not shown) disposed on the circuit board 70 and absorbs noise emitted from the high-frequency circuit, so that other electronic components Prevents from acting on. Specifically, the bottom surface of the rib in the case body 60 is disposed on the reference potential pattern layer 75, so that each circuit described later is surrounded by the rib and covered with a part of the flat portion. The rib functions as a partition wall in each circuit, and shields each circuit together with a part of the case body 60.

  The flexible wiring board 50 is placed on the case body 60, and the key frame 40B is fixed in the fixing hole 42 by a metallic screw member or the like. That is, the key frame 40B is electrically connected to the case body 60.

  On the circuit board 70, various electronic components and circuits (not shown) including the RFID unit 101 that processes signals transmitted and received by the transmitting and receiving antenna unit 108 are arranged. Various electronic components form a plurality of circuit blocks by a predetermined combination.

  A reference potential pattern layer 75 as a reference potential portion is formed on the circuit board 70. The reference potential pattern layer 75 is formed so as to partition each circuit block. The reference potential pattern layer 75 is formed by printing a conductive member in a predetermined pattern on the surface of the circuit board 70.

  The circuit board 70 and the case body 60 are partially fixed in a detachable manner at the plurality of connecting portions A. Specifically, circuit board side screw holes formed at the four corners of the circuit board 70 shown in FIG. 2 and case body side screw holes formed by arranging predetermined members at the four corners of the case body 60 (not shown). In a state in which the circuit board 70 and the case body 60 are detachably fixed, the screw member is screwed into the overlapped screw hole.

  Specifically, the case body 60 is fixed to the circuit board 70 in a state where the bottom surface of the rib is in contact with the reference potential pattern layer 75. That is, the reference potential pattern layer 75 and the case body 60 in the circuit board 70 are electrically connected. Here, since the key frame 40B is electrically connected to the case body 60 as described above, the key frame 40B is electrically connected to the reference potential pattern layer 75 via the case body 60.

  The rear case 2b is provided with a detachable battery lid 2c. After the battery 80 is accommodated from the outside of the rear case 2b, it is attached to the rear case 2b. Further, the rear case 2b accommodates a voice input unit 12 for inputting the user's voice.

  As shown in FIG. 5, the display unit side body 3 includes a front case 3a, an audio output unit 22, a rear case 3b, a speaker 23, a display unit 21, and a printed circuit board 85 to which the display unit 21 is connected. And an inner case 3c and a rear panel 3d.

  The display unit side body 3 includes a front case 3a, a rear case 3b, a display unit 21, a printed circuit board 85, an inner case 3c, and a rear panel 3d that are stacked. Specifically, the rear case 3b and the inner case 3c are disposed so that the inner surfaces of the concave shapes face each other, and are joined so that the outer peripheral edges of the rear case 3b and the inner case 3c overlap each other.

  The printed circuit board 85 to which the display unit 21 is connected is sandwiched between the rear case 3b and the inner case 3c. A speaker 23 connected to an amplifier (not shown) is connected to the printed board 85.

  In the present embodiment, the cellular phone 1 that can be folded by the connecting portion 4 is described. However, the cellular phone 1 is not foldable, and the operation unit side body 2 and the display unit side body 3 are overlapped. One of the casings is centered on an axis along the overlapping direction of the operation unit side casing 2 and the display unit side casing 3 so that one casing is slid in one direction from the combined state. A rotating (revolver) type that is rotated, or a type (straight type) in which the operation unit side body 2 and the display unit side body 3 are arranged in one housing and do not have a connecting portion may be used.

  Next, the configuration of the mobile phone 1 will be described with reference to FIG. FIG. 6 is a block diagram illustrating the configuration of the mobile phone 1. As shown in FIG. 6, the mobile phone 1 includes a CPU 100, an RFID (Radio Frequency Identification) unit 101, an audio processing unit 102, a memory unit 103, a power supply circuit unit 104, an image processing unit 105, an operation unit 106, and a battery 80. .

  The RFID unit 101 performs processing related to modulation / demodulation of a signal in a first used frequency band (for example, 13.56 MHz) transmitted / received by a transmission / reception antenna 109 that communicates with an external apparatus (for example, a reader / writer apparatus).

  Here, a communication operation using the transmission / reception antenna 109 will be described. The transmission / reception antenna 109 receives a radio wave (a carrier frequency (a first use frequency band) that is transmitted from the reader / writer device when the reader / writer device installed outside approaches a predetermined distance. For example, 13.56 MHz).

  When radio waves are received by the transmitting / receiving antenna 109, power is supplied from the battery 80, and the RFID unit 101 is activated.

  The RFID unit 101 performs signal processing such as demodulation on the signal in the first used frequency band supplied via the transmission / reception antenna 109 and supplies the processed signal to the CPU 100.

  The CPU 100 writes data to the memory unit 103 or reads data from the memory unit 103 based on the signal supplied from the RFID unit 101. When the CPU 100 reads data from the memory unit 103, the CPU 100 supplies the data to the RFID unit 101. The RFID unit 101 performs signal processing such as modulation on the data read from the memory unit 103 and transmits the data to an external reader / writer device via the transmission / reception antenna 109.

  The audio processing unit 102 includes an audio input unit 12, an audio output unit 22, and a speaker 23. The voice input unit 12 supplies the collected user voice to the voice processing unit 102. The sound collected by the sound input unit 12 is converted from an analog sound signal to a digital sound signal by the sound processing unit 102. The converted digital audio signal is subjected to predetermined processing such as filter processing and encoding processing in the CPU 100. The voice processing unit 102 performs predetermined processing on digital voice information such as ringtone data supplied by the CPU 100 to convert it into an analog voice signal and output it from the voice output unit 22.

  The memory unit 103 includes a nonvolatile memory such as an EEPROM, and stores a control program for sending and receiving calls and mails, an Internet browser, message data, an address book in which names, telephone numbers, and the like are registered.

  The power supply circuit unit 104 adjusts the power supply so that the power from the battery 80 is constant.

  The image processing unit 105 is connected to the display unit 21. The display unit 21 includes a display device such as a liquid crystal display (LCD), and displays, for example, e-mail text and various texts stored in the memory unit 103. The image processing unit 105 processes various data obtained by the user operating the operation unit 106 so that the data can be displayed, and causes the display unit 21 to display the data.

  The operation unit 106 includes various operation key groups 11. Each key constituting the operation key group 11 has a predetermined function according to the open / close state of the operation unit side body 2 and the display unit side body 3, various modes, or the type of the activated application. When the user presses each key, the operation corresponding to the function assigned to each key is executed.

  The CPU 100 is mainly composed of a microcomputer and controls the entire mobile phone 1. In addition to functioning as a calculation unit to be described later, the CPU 100 controls the transmission / reception of various types of information in the RFID unit 101, controls the output conversion of audio information, controls the information display on the display unit 21, and the input information of the operation unit 106. The corresponding processing is controlled.

  According to the present embodiment, the transmission / reception antenna unit 108 is integrally formed on a part of the key frame 40B constituting the operation unit, thereby suppressing an increase in the number of parts and an increase in the number of assembly steps.

  Further, according to the present embodiment, since the transmitting / receiving antenna unit 108 is formed in a part of the key frame 40B, the mobile phone 1 can be reduced in size and thickness.

  Moreover, according to this embodiment, since an antenna part can be formed in a part of key frame 40B, a several antenna part can be formed in one member. Further, the degree of freedom at the position where the antenna portion is formed is improved.

  In addition, according to the present embodiment, the transmission / reception antenna unit 108 is configured by a part of the thin key frame 40B. Therefore, the transmission / reception antenna unit 108 can be arranged in a gap between members. is there. As a result, the degree of freedom in design is improved, and the mobile phone 1 can be reduced in size and thickness.

  Further, according to the present embodiment, since the transmitting / receiving antenna unit 108 is formed to extend to the end side of the operation unit side body 2, it is hardly affected by human hands during use. Thereby, the fall of antenna sensitivity can be suppressed.

  Further, according to the present embodiment, since the transmitting / receiving antenna portion 108 is formed in a part of the key frame 40B that is separated from the circuit board 70, it is located away from the circuit board 70 on which electronic components, metals, and the like are arranged. A transmission / reception antenna unit 108 is formed. Thereby, the fall of antenna sensitivity can be suppressed.

  In addition, according to the present embodiment, since the transmitting / receiving antenna unit 108 is formed in a part of the key frame 40B that has conventionally been countermeasures against static electricity, it is not necessary to provide a member or a part for countermeasures against static electricity.

  Further, according to the present embodiment, since the flexible wiring board 50 is disposed between the key frame 40B on which the transmission / reception antenna unit 108 is formed and the circuit board 70, the transmission / reception antenna unit 108 and the circuit board 70 are arranged. A distance can be secured. Thereby, the fall of antenna sensitivity can be suppressed.

  Furthermore, according to this embodiment, since the case body 60 in which countermeasures against static electricity are taken is arranged between the flexible wiring board 50 and the circuit board 70, protection of the circuit board 70 board and strengthening of countermeasures against static electricity can be achieved. This can be suitably achieved.

  Further, the key frame 40B including the transmission / reception antenna unit 108 is configured to be fixed to the key sheet 40C, so that the relative position of the transmission / reception antenna unit 108 to the operation unit side body 2 is set to the arrangement position of the key sheet 40C. The wobbling in the operation unit side body 2 of the transmission / reception antenna unit 108 can be suppressed.

  In the present embodiment, the transmitting / receiving antenna unit 108 has been described as a loop-shaped antenna. However, the present invention is not limited to this, and as shown in FIG. It may be formed together in a shape. In the case of such a configuration, the feeding terminal 107 of the transmission / reception antenna unit 108 and the feeding terminal 201 of the main antenna 200 are formed. FIG. 8 shows the positional relationship when viewed from the side of the flexible wiring board 50, the key frame 40B, and the elements of each antenna. A functional block diagram of this configuration is shown in FIG.

  Further, as shown in FIG. 9, the mobile phone 1 includes the configuration shown in FIG. 6 (CPU 100, RFID unit 101, audio processing unit 102, memory unit 103, power supply circuit unit 104, image processing unit 105, operation unit 106). And an RF block 210 that performs processing related to transmission / reception of the main antenna 200. The main antenna 200 communicates with an external device (base station) in a predetermined use frequency band (for example, 800 MHz). Although 800 MHz has been exemplified as the predetermined use frequency band, other frequency bands may be used. Further, the transmission / reception antenna 109 may have a so-called dual band compatible type that can support a second use frequency band (for example, 2 GHz) in addition to a predetermined use frequency band. It may be configured by a multi-band compatible type that can also support the used frequency band.

  Here, the configuration and operation of the RF block 210 will be described. The RF block 210 includes a reception circuit 211 that processes a signal received by the main antenna 200, a transmission circuit 212 that processes a signal to be transmitted and supplies the signal to the main antenna 200, and a case where the signal is transmitted and a case where the signal is received. Thus, a duplexer 213 for switching between the reception circuit 211 and the transmission circuit 212 is provided.

  Further, as shown in FIG. 10, the mobile phone 1 according to the present invention may have a configuration in which a power feeding terminal of the transmission / reception antenna unit 108 and the main antenna 200 is shared by a power feeding terminal 300. In the case of such a configuration, as shown in FIG. 11, the functional block of the mobile phone 1 includes a CPU 100, an RFID unit 101, an audio processing unit 102, a memory unit 103, a power supply circuit unit 104, an image, The processing unit 105, the operation unit 106, the RF block 210, the distributor 214, the main antenna 200, and the transmission / reception antenna unit 108 are configured.

  According to such a configuration, the distributor 214 switches to the RF block 210 when performing communication / communication using the main antenna 200, and switches to the RFID section 101 when performing communication using the transmitting / receiving antenna unit 108. I do.

  In the present invention, since a plurality of antennas having different functions can be formed as a single member as described above, an increase in the number of parts and an increase in the number of assembly steps can be suppressed, and the mobile phone 1 can be reduced in size and thickness. Can do.

The external appearance perspective view in the state where a cellular phone was opened is shown. It is a disassembled perspective view of the member incorporated in the operation part side housing | casing. It is a schematic diagram about the structure of the antenna for transmission / reception. It is a schematic diagram about the structure of the antenna for transmission / reception. It is a disassembled perspective view of the member incorporated in the display part side housing | casing. It is a block diagram which shows the function of a mobile telephone. It is a schematic diagram about the other structure of the antenna for transmission / reception. It is a figure when the positional relationship of the key frame and flexible wiring board shown in FIG. 7 is seen from the side. It is a block diagram which shows the function of a mobile telephone in the case of the structure shown in FIG. It is a schematic diagram about the other structure of the antenna for transmission / reception. FIG. 10 is a block diagram showing functions of the mobile phone in the case of the configuration shown in FIG. 9.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mobile phone 2 Operation part side body 3 Display part side body 11 Operation key group 40A Operation member 40B Key frame 40C Key sheet 50 Flexible wiring board 101 RFID part 107,201 Feed terminal 108 Transmission / reception antenna part 109 Transmission / reception antenna 200 Main antenna 210 RF block

Claims (6)

A housing in which an opening is formed;
A flexible sheet member disposed in the housing;
An operation member disposed between the housing and the sheet member so as to be exposed to the outside through at least the opening;
A conductive reinforcing member disposed between the operating member and the sheet member;
A switch member disposed on a side opposite to the reinforcing member side of the sheet member and disposed at a position corresponding to the operation member;
A loop-shaped antenna part formed on a part of the reinforcing member and capable of transmitting and receiving signals;
A communication device comprising: a signal processing unit disposed in the housing for processing a signal transmitted and received by the antenna unit.   The communication device according to claim 1, wherein the antenna unit is formed on an end side of the casing of the reinforcing member.   The communication device according to claim 1, wherein a circuit board on which the signal processing unit is mounted is disposed on a side of the switch member opposite to the reinforcing member side. A reference potential portion is formed inside the housing,
The communication device according to claim 1, wherein the reinforcing member is electrically connected to the reference potential portion. A reference potential portion is formed inside the housing,
Between the switch member and the circuit board, a conductive case member that is electrically connected to the reference potential portion is disposed,
The communication device according to claim 3, wherein the reinforcing member is electrically connected to the case member and electrically connected to the reference potential portion via the case member.   The communication device according to any one of claims 1 to 5, wherein the antenna unit is fixed to the sheet member.

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