JP2008211598A - Communication equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide communication equipment by which an arrangement position of an antenna is freely determined. <P>SOLUTION: The communication equipment is characterized by including: a chassis 2 on the side of an operation part; a loop antenna part 81 arranged in the chassis 2 on the side of the operation part; a circuit board 70 having a reference potential part 72 arranged in the chassis 2 on the side of the operation part; and a charging terminal 19 having a metal part 74 on the outer surface, mounted on the circuit board 70 and that the edge of the metal part 74 is mounted on a part electrically isolated from the reference potential part 72 on the circuit board 70. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a communication device that communicates with another terminal via an antenna.
About.

  Communication means such as RFID (Radio Frequency Identification), which is a non-contact IC (Integrated Circuit) chip that transmits and receives short-distance radio signals in order to improve functionality in a communication device for performing remote communication with others at present. There are an increasing number of products built in the housing.

  This RFID forms an antenna by forming FPC (Flexible Printed Circuits) and a coil in a loop shape. Here, the mounting position of the antenna is determined by the shape of the antenna and the arrangement of other components inside the housing. For example, it may be mounted at any position on the rear case.

Here, in order to prevent deterioration of antenna characteristics, there is known a wireless communication terminal designed so that an antenna and a shield case (reference potential portion) formed on a circuit board are not close to each other (Patent Document 1). reference).
JP 2006-238204 A

  However, in order to prevent the antenna and the shield case (reference potential portion) from overlapping each other and coming close to each other, there is a problem that the arrangement position of the antenna in the housing is limited.

  For example, the outer surface has a metal part that covers an electronic component mounted on the circuit board for reinforcement, and the metal part is electrically connected to the reference potential part of the circuit board. In the case where the metal part can be equated with the ground, if the antenna is close to and overlaps the metal part, the antenna characteristics may be deteriorated.

  Therefore, the antenna must be arranged in the casing so as not to overlap with such an electronic component, and it becomes difficult to design the antenna arrangement position in the casing having a limited space.

  The present invention has been made in view of the above-described problems, and one of the purposes thereof is a communication device that can freely determine an antenna arrangement position in a housing having a limited space. The purpose is to provide.

  In order to solve the above problems, a communication device according to the present invention includes a housing, an antenna disposed in the housing, a circuit board having a reference potential portion disposed in the housing, and the circuit. An electronic component having a metal part on an outer surface mounted on a substrate, and the metal part is mounted on a portion electrically isolated from the reference potential part on the circuit board, It is characterized by.

  In the communication device, it is preferable that the antenna is arranged in the casing so as to face the electronic component.

  In the communication apparatus, it is preferable that the antenna is disposed between the electronic component and the inner surface of the housing, and the electronic component is configured to press the antenna toward the inner surface of the housing.

  In the communication device, it is preferable that the electronic component has a metal connection terminal portion exposed to the outside of the housing.

  In order to solve the above problems, a communication device according to the present invention includes a housing, an antenna disposed in the housing, a circuit board having a reference potential portion disposed in the housing, and the circuit. An electronic component mounted on a substrate and having a metal part on an outer surface, and a magnetic material is disposed between the metal part and the antenna, and the electronic component includes the magnetic material The antenna is pressed to the inner surface side of the housing via a gap.

  In order to solve the above problems, a communication device according to the present invention includes a housing, an antenna disposed in the housing, a circuit board having a reference potential portion disposed in the housing, and the circuit. A metal part that covers an electronic component mounted at a predetermined position on the substrate from an outer surface, and the reference potential part is arranged by a predetermined pattern formed on one plane of the circuit board The electronic component is mounted on a portion corresponding to the predetermined pattern on the other plane on the circuit board and in the vicinity of the antenna, and the terminal of the metal part is The circuit board is inserted from the other plane toward the one plane, and is fixed so as to be electrically non-conductive with the reference potential portion disposed on the circuit board. .

  According to the present invention, the antenna arrangement position can be freely determined.

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

  The basic structure of the mobile phone 1 will be described with reference to FIGS. FIG. 1 shows a front view of the mobile phone 1 in the opened state (first open state). 2A shows a left side view when the mobile phone 1 is opened, and FIG. 2B shows a right side view when the mobile phone 1 is opened. FIG. 3 shows a rear view in a state where the mobile phone 1 is opened.

  The mobile phone 1 includes an operation unit side housing 2 (housing) and a display unit side housing 3. The operation unit side body 2 and the display unit side body 3 are connected to each other via a connection unit 4 having a biaxial hinge mechanism, and the mobile phone 1 can be deformed into an open state and a closed state. In each closed state, the display unit side body 3 can be switched between a front state and a back 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. In the open state, the display 30 disposed on the surface 3a of the display unit side body 3 described later and the operation key group 11 disposed on the surface 2a of the operation unit side body 2 are on the same side. The back state is a state in which the display 30 in the display unit side body 3 and the operation key group 11 in the operation unit side body 2 are arranged to face opposite sides. Say. Further, the front state in the closed state is a state in which the display 30 in the display unit side body 3 is arranged so as to face the operation key group 11 in the operation unit side body 2, and the back state in the closed state is In this state, the display 30 in the display unit side body 3 is exposed without facing the operation key group 11 in the operation unit side body 2.

  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 is configured such that an operation key group 11 and a voice input unit 12 to which a voice uttered by a user of the mobile phone 1 is input are exposed on the front case 2a side. The Here, 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, and an input for inputting numbers of telephone numbers, characters such as mails, and the like. An operation key 14 and a determination operation key 15 for performing determination in various operations, scrolling in the up / down / left / right directions, and the like are configured. 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.

  Each key constituting the operation key group 11 is predetermined according to a deformed state such as an open / close state and a front / back state of the operation unit side body 2 and the display unit side body 3 and the type of application being activated. Function is assigned (key assignment). In the mobile phone 1, when each key constituting the operation key group 11 is pressed by the user, an operation corresponding to the function assigned to each key is executed.

  As shown in FIG. 2A, on one side surface of the operation unit side body 2, an interface 16 for transmitting / receiving data to / from an external device (for example, a host device), a headphone / microphone terminal 17, A removable external memory interface 18 and a charging terminal 19 for charging the battery are provided. The interface 16, the headphone terminal / microphone terminal 17, and the interface 18 are covered with a dust-proof cap that can be attached and detached when not in use.

  On the other side of the operation unit side body 2, as shown in FIG. 2B, a pair of side keys 20, an operation key 21 used at the time of imaging, and a broadcast wave whose radio wave reception angle can be adjusted. A receiving antenna 22 is arranged. A predetermined function is assigned to the side key 20 in accordance with a deformed state such as an open / close state and a front / back state of the operation unit side body 2 and the display unit side body 3 and the type of the activated application ( Key assignment). Here, similarly to the above, when the side key 20 is pressed by the user, an operation corresponding to the function assigned to the side key 20 in the mobile phone 1 is executed.

  As shown in FIG. 3, a camera unit 23 that captures an image of a subject and a light unit 24 that irradiates the subject with light are disposed in the rear case 2 b of the operation unit side body 2. The camera unit 23 and the light unit 24 are arranged on the connection unit 4 side in the operation unit side body 2. In addition, the rear case 2b in the operation unit side body 2 has an opening for mounting the battery in a battery accommodating portion, which will be described in detail later, and a battery lid 25 is disposed so as to close the opening. Is done.

  Moreover, the upper end part of the operation part side housing | casing 2 and the lower end part of the display part side housing | casing 3 are connected via the connection part 4 provided with a biaxial hinge mechanism, as shown in FIGS. As shown in FIG. 3, the sub operation key group 33 is arranged in a line in the width direction (short direction) of the mobile phone 1 on one surface (back surface) of the connecting portion 4. Each of the keys constituting the sub operation key group 33 depends on a deformed state such as an open / closed state or a front / back state of the operation unit side body 2 and the display unit side body 3 and the type of application being activated. A predetermined function is assigned (key assignment). In the mobile phone 1, when each key constituting the operation key group 11 is pressed by the user, an operation corresponding to the function assigned to each key is executed.

  Further, the display unit side body 3 is configured with a front case 3a and a rear case 3b on the outer surface. As shown in FIG. 1, a display 30 having a predetermined shape for displaying various information and a sound output unit 31 for outputting sound on the other party side of the call are exposed on the front case 3 a in the display unit side body 3. To be arranged. Here, the audio output unit 31 is disposed on the outer end side opposite to the connection unit 4 in the longitudinal direction of the display unit side body 3. That is, the audio output unit 31 is arranged on the other end side when the mobile phone 1 is in the open state.

  Further, as shown in FIG. 3, a sub-display 32 for displaying various types of information is disposed in the rear case 3 b of the display unit side body 3 so as to be exposed. Each of the display 30 and the sub-display 32 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.

  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 slid in one direction, or one of the casings is rotated about an axis along the direction in which the operation unit side casing 2 and the display unit side casing 3 overlap. A rotating (revolver) type or a type (straight type) in which the operation unit side body 2 and the display unit side body 3 are arranged in one case and do not have a connecting portion may be used.

  Next, the internal structure of the operation unit side body 2 will be described with reference to FIG.

  As shown in FIG. 4, the operation unit side body 2 includes a front case 2a, a key sheet 40 constituting the operation key group 11 described above, a flexible printed wiring board 50 on which key switches are arranged, and a shield case 60. A circuit board 70 including various electronic components such as a reference potential unit 72 and an RF (Radio Frequency) module for a mobile phone, an antenna unit 80, a loop antenna unit 81 (antenna), and a rear case 2b. . The battery 90 is accommodated so as to be removable from the outside of the rear case 2b. Further, the battery lid 25 is disposed so as to close the opening 91 of the rear case 2b.

  Further, the front case 2a and the rear case 2b are arranged so that their concave inner surfaces face each other, and are joined so that their outer peripheral edges overlap each other. Further, between the front case 2a and the rear case 2b, a key sheet 40, a flexible printed wiring board 50, a shield case 60, a circuit board 70, an antenna unit 80, and a loop antenna unit 81 are provided. 2a is stored and arranged in this order.

  A reference potential portion 72, which will be described in detail later, is formed on the first surface 71 of the circuit board 70. Various electronic components such as a charging terminal 19 to be described in detail later are arranged on the second surface 73 of the circuit board 70. Specifically, on the second surface 73, a camera unit 23 and a light unit 24 (not shown) are arranged at an end portion on the connection unit 4 side, and an audio input unit 12 (not shown) is an end part on the connection unit 4 side. Placed in. The camera unit 23 and the light unit 24 are exposed to the outside through a perforated part 2c that is perforated in a predetermined shape in the rear case 2b.

  The shield case 60 is a metal member having a shape in which one wide surface of a thin rectangular parallelepiped is opened. The shield case 60 may be made of a skeleton made of resin and a conductor film formed on the surface thereof, in addition to being made of metal.

  The shield case 60 is electrically connected to the reference potential portion 72 formed on the first surface 71 of the circuit board 70. Thereby, the shield case 60 is electrically connected to the reference potential portion 72 and has the same potential. The shield case 60 prevents external noise from acting on various electronic components arranged on the circuit board 70 and absorbs noise emitted from a high-frequency circuit or the like formed on the circuit board 70. The shield case 60 also functions as a reinforcing member for securing rigidity against pressing operations of various keys described later.

  The flexible printed wiring board 50 has a plurality of key switches 51, 52, 53 on the surface on the front case 2a side. The key switches 51, 52, 53 of the flexible printed wiring board 50 have a structure having a metal dome of a metal plate that is curved in a bowl shape and is three-dimensionally formed. When the apex of the bowl-shaped shape is pressed, the metal dome comes into contact with a switch terminal formed in an electric circuit (not shown) printed on the surface of the flexible printed wiring board 50 and is electrically connected. Note that the flexible printed wiring board 50 is obtained by sandwiching wiring between a plurality of insulating films.

  The key sheet 40 is configured by affixing a function setting operation key 13, an input operation key 14, and a determination operation key 15 constituted by the operation key group 11 to the surface of a silicon rubber sheet 41 with an adhesive. Further, the function setting operation key 13, the input operation key 14, and the determination operation key 15 constituting the operation key group 11 in the key sheet 40 are arranged at positions facing the key switches 51, 52, 53 on the flexible printed circuit board 50. And arranged so as to be exposed from a key hole 45 formed in the front case 2a described later.

  A plurality of key holes 45 are formed on the inner surface of the front case 2a facing the display 30 of the display unit side body 3 in a state in which the cellular phone 1 is folded. From each of the plurality of key holes 45, the pressing surfaces of the function setting operation key 13, the input operation key 14, and the determination operation key 15 formed on the key sheet 40 are exposed. By pressing the function setting operation key 13, the input operation key 14, and the determination operation key 15 constituting the exposed operation key group 11 so as to press down, the metal dome in each of the corresponding key switches 51, 52, 53 is provided. The apex of (saddle-like shape) is pressed and comes into electrical contact with the switch terminal.

  The antenna unit 80 is configured by arranging an antenna element having a predetermined shape on a base. The antenna unit 80 is disposed on the end side opposite to the connection unit 4 side in the mobile phone 1. The antenna element of the antenna unit 80 is formed of a strip-shaped sheet metal. The antenna unit 80 is supplied with power from the circuit board 70 via a power supply terminal (not shown). As a result, the antenna element is fed from the circuit board 70 via the feed terminal and is connected to the RF module and the like of the circuit board 70.

  The loop antenna portion 81 is an RFID antenna, which will be described in detail later, and is disposed so as to surround a portion that houses the battery 90 formed inside the rear case 2b.

  The battery 90 is detachably accommodated in the battery accommodating portion 92 through the opening 91 formed in the rear case 2b. The battery housing portion 92 is formed by the rear case 2 b and a part of the circuit board 70. Then, in a state where the battery 90 is accommodated, the battery lid 25 is disposed so as to close the opening 91, so that the battery 90 can be prevented from falling off.

  Next, each function of the mobile phone 1 will be described with reference to the functional block diagram of FIG. As shown in FIG. 5, the mobile phone 1 includes a first communication unit 101 including an RFID unit 100, a second communication unit 200 that communicates with an external terminal, and a second communication unit. And a processing unit 201 that processes information communicated by the network 200.

  The first communication unit 101 is configured to include the RFID unit 100 described above, and includes a loop antenna unit 81 that communicates with an external device using a first use frequency band (for example, 13.56 MHz), and an adjustment unit. And a capacitor 102.

  The loop antenna unit 81 includes, for example, a coil wound in a plurality of times on a sheet made of PET (polyethylene terephthalate) material, and is a signal in the first use frequency band transmitted from an external device. Receive.

  The RFID unit 100 includes a power supply circuit 103 that generates a predetermined voltage based on power induced by a signal received by the loop antenna unit 81, and a modulation process or a demodulation process for a signal communicated by the loop antenna unit 81. An RF circuit 104 that performs signal processing such as a CPU, a CPU 105 that performs predetermined arithmetic processing, and a memory 106 that stores predetermined data. The power supply circuit 103 is configured by, for example, a DC-DC converter.

  Here, the operation of the first communication unit 101 will be described.

  When the loop antenna unit 81 approaches a reader / writer device installed outside to a predetermined distance, the loop antenna unit 81 transmits a radio wave transmitted from the reader / writer device (a carrier frequency (first use frequency band)). For example, 13.56 MHz). The capacitor 102 performs a predetermined adjustment (tuning) so that radio waves in the first use frequency band are supplied to the RF circuit 104 via the loop antenna unit 81.

  Further, when a radio wave is received by the loop antenna unit 81, an electromotive force is generated due to a resonance action.

  The power supply circuit 103 generates a predetermined power supply voltage from the electromotive force generated by the resonance action, and supplies it to the RF circuit 104, the CPU 105, and the memory 106. Further, the RF circuit 104, the CPU 105, and the memory 106 shift from the stopped state to the activated state when a predetermined power supply voltage is supplied from the power supply circuit 103.

  The RF circuit 104 performs signal processing such as demodulation on the signal in the first used frequency band supplied via the loop antenna unit 81, and supplies the processed signal to the CPU 105.

  The CPU 105 writes data into the memory 106 or reads data from the memory 106 based on the signal supplied from the RF circuit 104. When the CPU 105 reads data from the memory 106, the CPU 105 supplies the data to the RF circuit 104. The RF circuit 104 performs signal processing such as modulation on the data read from the memory 106 and transmits the data to an external reader / writer device via the loop antenna unit 81.

  In the above description, the first communication unit 101 has been described as a so-called passive induction electromagnetic field method (electromagnetic induction method) that does not have a power supply unit. However, the first communication unit 101 is not limited thereto. Alternatively, a passive mutual induction method (electromagnetic coupling method) or a radiated electromagnetic field method (radio wave method) may be used, or an active type (Active) having a power supply unit may be used. In the case of the active type, the power is supplied from the battery 90. Further, the access method of the first communication unit 101 has been described as being a read / write type, but is not limited thereto, and may be a read only type, a write once type, or the like.

  Further, as shown in FIG. 5, the second communication unit 200 includes an antenna unit 80 (main antenna) that communicates with an external device using a second use frequency band that is a higher frequency band than the first use frequency band. And a communication processing unit 202 that performs signal processing such as modulation processing or demodulation processing. The second communication unit 200 is supplied with power from the battery 90.

  The antenna unit 80 communicates with an external device in the second use frequency band (for example, 800 MHz). In the present embodiment, the second use frequency band is 800 MHz, but other frequency bands may be used. Further, the antenna unit 80 may have a so-called dual band compatible type capable of supporting a third used frequency band (for example, 2 GHz) in addition to the second used frequency band. It may be configured by a multi-band compatible type that can also support the used frequency band.

  The communication processing unit 202 demodulates the signal received by the antenna unit 80, supplies the processed signal to the processing unit 201, modulates the signal supplied from the processing unit 201, and performs external processing via the antenna unit 80. Send to device.

  Further, as shown in FIG. 5, the processing unit 201 stores operation keys 11, a voice input unit 12, a display 30, a voice output unit 31, a CPU 203 that performs a predetermined calculation process, and predetermined data. A memory 204, an acoustic processing unit 205 that performs predetermined sound processing, an image processing unit 206 that performs predetermined image processing, a camera unit 23 that captures a subject, a speaker 207 that outputs ringtones, and the like It has. Further, the processing unit 201 is supplied with power from the battery 90. As shown in FIG. 5, in the mobile phone 1, the CPU 105 and the CPU 203 are connected by a signal line S, and information processed by the first communication unit 101 via the signal line S is an image processing unit. The information supplied to 206 and processed by the image processing unit 206 is displayed on the display 30.

  Next, the arrangement position of the loop antenna unit 81 will be described. 6A shows a perspective view before the loop antenna portion 81 is arranged on the rear case 2b, and FIG. 6B shows a perspective view after the loop antenna portion 81 is arranged on the rear case 2b. FIG. 6C shows a perspective view before the circuit board 70 is attached to the rear case 2b where the loop antenna portion 81 is arranged.

  As shown in FIGS. 6A and 6B, the loop antenna portion 81 is disposed between the outer wall of the battery housing portion 92 formed inside the rear case 2b and the inner wall of the rear case 2b.

  On the circuit board 70, as shown in FIG. 6C, when the mobile phone 1 is placed on a charging stand (cradle) (not shown), charging for receiving power from the charging stand side is performed. A terminal 19 (electronic component) is provided. In addition, a strength reinforcing metal portion 74 is provided on the outer surface of the charging terminal 19.

  On the plane (first surface 71) of the circuit board 70 on the side facing the shield case 60, a reference potential portion 72 is arranged in a predetermined pattern including the edge portion.

  The charging terminal 19 is on the plane (second surface 73) of the circuit board 70 on the side where the reference potential portion 72 is not disposed, and in the vicinity of the edge corresponding to a predetermined pattern on the plane. It is mounted at a predetermined position.

  Further, the metal portion 74 covers the charging terminal 19 from the outer surface, and the terminal is disposed from the one surface side (second surface 73) of the circuit board 70 to the other surface side (the reference potential portion 72 is disposed). It is inserted toward the first surface 71) and is fixed on the first surface 71 side.

  Therefore, when the circuit board 70 is attached to the rear case 2b in which the loop antenna unit 81 is disposed, the charging terminal 19 provided on the circuit board 70 and the loop antenna unit 81 are close to each other (FIG. 7). See). 7A is a plan view of the operation unit side body 2, and FIG. 7B is a cross-sectional view taken along the section AA of the operation unit side body 2 shown in FIG. 7A. 7C is a cross-sectional view taken along the cutting plane BB of the operation unit side body 2 shown in FIG. 7A, and FIG. 7D is an operation shown in FIG. 7C. The figure when the predetermined area | region (area shown by a in a figure) of the part side housing | casing 2 is expanded is shown.

  Here, when the metal part 74 covering the outer surface of the charging terminal 19 is electrically connected to the reference potential part 72, the antenna characteristics of the loop antenna part 81 may be deteriorated due to the influence of the reference potential part 72. . Therefore, in the present invention, this problem is avoided by the following configuration.

  Below, the aspect at the time of the terminal of the metal part 74 being fixed to the circuit board 70 is demonstrated.

  Since the terminal of the metal portion 74 is inserted from the second surface 73 of the circuit board 70 toward the first surface 71 as described above, the tip of the terminal of the metal portion 74 that protrudes from the first surface 71. Part or all of the portion is related to the reference potential portion 72.

  Therefore, when a part of the tip of the terminal of the metal part 74 is related to the reference potential part 72, the outer shape of the tip of the tip of the terminal of the metal part 74 in the reference potential part 72 protrudes from the location. A notch-shaped non-conductive portion is formed so as to be separated by a predetermined distance. And the front-end | tip part of the terminal of the metal part 74 which protrudes in the said notch-shaped non-conduction part is fixed with solder etc. (refer FIG. 8 (A)).

  Further, in the case where the entire tip portion of the terminal of the metal portion 74 is related to the reference potential portion 72, the outer shape of the tip portion is predetermined at the location where the tip portion of the terminal of the metal portion 74 in the reference potential portion 72 protrudes. Floating island-shaped non-conductive portions are formed so as to be separated by a distance. And the front-end | tip part of the terminal of the metal part 74 which protrudes in the said floating island-like non-conduction part is fixed with solder etc. (refer FIG.8 (B)).

  Thus, according to the mobile phone 1 according to the present invention, since the metal portion 74 and the reference potential portion 72 are not electrically connected, the loop antenna portion 81 is arranged in the thickness direction of the operation unit side body 2 and Even in the case of being arranged opposite to the charging terminal 19 having the metal part 74 on the outer surface in both the width directions (see FIG. 7D), the metal part 74 covering the charging terminal 19. Is not regarded as a ground, the antenna characteristics are not deteriorated, and the strength of the charging terminal 19 is enhanced by the metal portion 74, and the loop antenna portion can be freely set in the operation unit side body 2 having a limited space. The arrangement position of 81 can be determined.

  The present invention is not limited to the present embodiment. For example, in the mobile phone 1 according to the present invention, the loop antenna unit 81 is disposed between the charging terminal 19 and the inner surface of the operation unit side housing 2, and the charging terminal 19 connects the loop antenna unit 81 to the operation unit side housing. The structure which presses to the inner surface side of 2 may be sufficient.

  In such a configuration, the loop antenna portion 81 and the metal portion 74 covering the outer surface of the charging terminal 19 are in contact with each other, but the metal portion 74 is not electrically connected to the reference potential portion 72. Therefore, degradation of antenna characteristics can be avoided.

  In the mobile phone 1 according to the present invention, the operation unit side body 2, the loop antenna unit 81 disposed in the operation unit side body 2, and the reference disposed in the operation unit side body 2. The circuit board 70 having the electric potential part 72 and the charging terminal 19 having the metal part 74 on the outer surface mounted on the circuit board 70, and the magnetic part 74 and the loop antenna part 81 are magnetic. The body material is disposed, and the charging terminal 19 may be configured to press the loop antenna portion 81 toward the inner surface side of the operation unit side body 2 through the magnetic material.

  In the case of such a configuration, in addition to the effects described above, or without making the metal part 74 non-conductive with the reference potential part 72, the deterioration of the antenna characteristics is avoided by the shielding effect by the magnetic material. be able to. In addition, while the strength of the charging terminal 19 is strengthened by the metal portion 74, the arrangement position of the loop antenna portion 81 can be freely determined in the operation unit side body 2 having a limited space. Furthermore, by adopting an elastic member as the magnetic material, it is possible to suitably protect the loop antenna portion 81 and the charging terminal 19 that are respectively disposed to face the magnetic material. In the present embodiment, the charging terminal 19 is given as an example of an electronic component. However, other electronic products implemented on a circuit board having a metal portion 74 corresponding to the metal portion 74 may also be used. good.

  In the present embodiment, the mobile phone 1 has been described as an example of the communication device. However, the present invention is not limited to this, and can be applied to other communication devices that perform communication via an antenna.

The front view in the state (1st open state) which opened the mobile telephone is shown. (A) The left view in the state which opened the mobile phone is shown, (B) The right view in the state which opened the mobile phone is shown. The rear view in the state which opened the mobile telephone is shown. The disassembled perspective view of the operation part side housing | casing is shown. It is a block diagram which shows the function of the mobile telephone apparatus which concerns on this invention. It is a perspective view with which it uses for description about the process of assembling a loop antenna part, a rear case, and a circuit board. It is sectional drawing of the operation part side housing | casing. It is a figure which shows a mode that the front-end | tip part of the terminal of a metal part is being fixed to the circuit board.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mobile telephone 2 Operation part side housing | casing 2a, 3a Front case 2b, 3b Rear case 3 Display part side housing | casing 4 Connection part 19 Charging terminal 70 Circuit board 72 Reference potential part 74 Metal part 80 Antenna part 81 Loop antenna part

Claims (6)

A housing,
An antenna disposed in the housing;
A circuit board having a reference potential portion disposed in the housing;
An electronic component mounted on the circuit board and having a metal part on the outer surface;
The communication device, wherein the metal part is mounted on a part of the circuit board that is electrically isolated from the reference potential part.   The communication device according to claim 1, wherein the antenna is disposed in the casing so as to face the electronic component. The antenna is disposed between the electronic component and the housing inner surface,
The communication device according to claim 1, wherein the electronic component presses the antenna toward the inner surface of the housing.   4. The communication device according to claim 1, wherein the electronic component has a metal connection terminal portion exposed to the outside of the housing. 5. A housing,
An antenna disposed in the housing;
A circuit board having a reference potential portion disposed in the housing;
An electronic component mounted on the circuit board and having a metal part on the outer surface;
A magnetic material is disposed between the metal part and the antenna,
The communication device, wherein the electronic component presses the antenna toward the inner surface of the housing through the magnetic material. A housing,
An antenna disposed in the housing;
A circuit board having a reference potential portion disposed in the housing;
A metal part that covers an electronic component mounted at a predetermined position on the circuit board from an outer surface;
The reference potential portion is arranged by a predetermined pattern formed on one plane of the circuit board,
The electronic component is mounted on a portion corresponding to the predetermined pattern on the other plane on the circuit board and in the vicinity of the antenna,
The terminal of the metal part is inserted into the circuit board from the other plane toward the one plane so as to be electrically non-conductive with the reference potential part disposed on the circuit board. A communication device characterized by being fixed.

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