WO2009090721A1 - 携帯無線装置 - Google Patents
携帯無線装置 Download PDFInfo
- Publication number
- WO2009090721A1 WO2009090721A1 PCT/JP2008/003998 JP2008003998W WO2009090721A1 WO 2009090721 A1 WO2009090721 A1 WO 2009090721A1 JP 2008003998 W JP2008003998 W JP 2008003998W WO 2009090721 A1 WO2009090721 A1 WO 2009090721A1
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- WO
- WIPO (PCT)
- Prior art keywords
- housing
- contact
- planar member
- wireless device
- conductive
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/32—Vertical arrangement of element
- H01Q9/38—Vertical arrangement of element with counterpoise
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0262—Details of the structure or mounting of specific components for a battery compartment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0274—Details of the structure or mounting of specific components for an electrical connector module
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0277—Details of the structure or mounting of specific components for a printed circuit board assembly
Definitions
- the present invention relates to a mobile radio apparatus such as a mobile phone.
- the whip antenna of Patent Document 1 when the small wireless device main body is placed on the side, the upper portion of the small wireless device main body is floated, and the whip antenna A rib for adjusting the sensitivity characteristic of the antenna is installed to achieve good reception sensitivity without deteriorating the antenna gain.
- the antenna element and the matching circuit are switched by the switching element to perform impedance matching on the metal plate, and as shown in Patent Document 2, the antenna is separated from the antenna feeding point on the GND of the circuit board inside the housing.
- one end of the element portion is grounded to the ground of the circuit board at one base point, and the other end portion of the element portion is an open end.
- a technique for obtaining good antenna sensitivity even on a metal top plate is employed.
- the thickness of the main body increases by the amount of the rib, so the thickness cannot be reduced, and the rib has a great impact on the design. Therefore, there is a problem that the outer shape is damaged.
- the method of switching the antenna element and the matching circuit with the switching element is not desirable for miniaturization as well as a complicated circuit configuration and control, which increases the cost.
- Patent Document 3 As a portable wireless device in which the antenna gain does not deteriorate even when the main body is placed on a metal plate without changing the size or design of the terminal itself, for example, as in Patent Document 3 There is known a configuration in which a placed metal top plate is actively used for antenna gain.
- Patent Document 3 a communication terminal having a configuration in which a conductor having an auxiliary ground plate placed on a metal top plate and a radiating element adjacent to the auxiliary ground plate is disposed on a substrate to which an antenna is connected.
- a high-frequency current having a reverse phase flows through the metal plate due to a mirror image effect.
- the radiating element forms a dipole antenna symmetrically with respect to the metal plate.
- a substrate connected to a radiating element provided so as to rise from the auxiliary ground plate is disposed above the auxiliary ground plate. That is, a space for arranging a conductor having a radiating element and an auxiliary ground plane is required below the substrate. Therefore, a predetermined thickness is required in the part where the conductor having the ground plane and the radiating element is arranged in the casing, and the thickness of this part is reduced to reduce the size of the casing itself that has been desired in recent years (particularly thinning). There is a problem that cannot be achieved.
- An object of the present invention is to provide a portable wireless device that can maintain good reception sensitivity and can be thinned even when placed on a metal top plate.
- the portable wireless device of the present invention includes a housing having an operation surface and an outer surface that is opposite to the operation surface and exposed to the outside, an antenna, and a feeding point of the antenna. And a substrate having a planar conductive layer, a detachably attached to the housing, and a conductive first planar member that is a part of the outer surface, electrically connected to the conductive layer, The structure which has an electroconductive contact member contact
- the portable wireless device of the present invention includes a housing having an outer surface, an antenna, a substrate disposed inside the housing, having a feeding point of the antenna and a planar conductive layer, and the housing.
- a conductive first planar member that is detachably attached and serves as a part of the outer surface, and a conductive contact member that is electrically connected to the conductive layer and contacts the first planar member. Take the configuration.
- FIG. 1 is an exploded perspective view showing a main part configuration of a foldable mobile phone that is a mobile radio apparatus according to Embodiment 1 of the present invention.
- FIG. FIG. 2 is a schematic diagram showing a main configuration of the mobile phone according to Embodiment 1 of the present invention.
- FIG. 2 is a main part configuration diagram showing a connection state between a battery cover and a circuit board in a lower housing in a mobile phone as a mobile wireless device according to Embodiment 1 of the invention;
- the figure which shows the connection part of the same lower case side Figure showing the back side of the battery cover The side view which shows the principal part of the connection part of a battery cover part and a contact member in the modification of the mobile telephone which concerns on Embodiment 1 of this invention.
- FIG. 6B is a plan view of the circuit board shown in FIG. 6A in the modification of the mobile phone according to Embodiment 1 of the present invention.
- the disassembled perspective view which shows the principal part structure of the foldable mobile telephone which is a portable radio
- Main part block diagram which shows the connection state of a battery cover part and the circuit board in a lower housing
- the disassembled perspective view which shows the principal part structure of the foldable mobile telephone which is a portable radio
- Main part block diagram which shows the connection state of a battery cover part and the circuit board in a lower housing
- View of the battery cover of the mobile phone viewed from the back side Schematic diagram of the battery cover of the mobile phone
- the portable wireless device is described using a foldable mobile phone or a PHS phone provided with an antenna, but is not limited to a foldable type and may be a straight type.
- FIG. 1 is an exploded perspective view showing a main configuration of a foldable mobile phone that is a portable radio apparatus according to Embodiment 1 of the present invention.
- the cellular phone is shown in a folded state with the back side facing up.
- a casing 110 of the mobile phone 100 shown in FIG. 1 includes a first casing (casing: hereinafter referred to as “lower casing”) 114 and a second casing that are rotatably attached to each other via a hinge portion 112. (Hereinafter referred to as “upper housing”) 116.
- Each of the lower casing 114 and the upper casing 116 is formed in a rectangular shape in plan view, and is foldable via the hinge portion 112. When folded, the operation surface of the lower casing 114 and the upper casing 116 are The display surface is disposed opposite to the display surface.
- the lower casing 114 of the mobile phone 100 is formed with a concave battery box 117 that opens to a bottom surface 115 (corresponding to the rear surface of the casing 110) that is exposed to the outside on the side opposite to the operation surface. ing.
- the battery box 117 houses the battery 130, and the battery box 117 is detachably attached to the lower housing 114 in a state where the battery 130 is housed, and forms a part of the back surface 115 (second cover).
- the single surface member 140 is covered from the opening side.
- the surface of the lower housing 114 that faces the upper housing 116 is substantially parallel to the back surface 115 and is the surface opposite to the back surface 115, and the key It is the operation side.
- the lower housing 114 is formed of an insulating member, and here is formed of resin.
- FIG. 2 is a schematic diagram showing a main configuration of mobile phone 100 according to Embodiment 1 of the present invention.
- a circuit board 121 that realizes each function such as a communication function in the mobile phone 100 is disposed in the lower housing 114 to which the battery cover 140 is attached.
- the circuit board 121 has a battery box region (hereinafter referred to as “lower region”) 114 a that houses the battery 130 in the lower housing 114 and a longitudinal direction of the lower housing 114 along the back surface 115 (of the lower housing 114). It is arranged in a region (upper region) 114b substantially adjacent in the vertical direction).
- the circuit board 121 is provided with a feeding point 124 that feeds power to the monopole antenna 123 arranged in the lower housing 114.
- the feeding point 124 is connected to a planar conductive layer of the circuit board 121 together with an electronic component (not shown) mounted on the circuit board 121.
- the conductive layer (GND layer) of the circuit board 121 and a reinforcing conductive plate 125 described later are electrically connected (short-circuited), and the circuit board 121 and the reinforcing conductive plate 125 are at the same potential.
- the monopole antenna 123 is formed in a small size in the lower casing 114 by being bent or the like corresponding to the shape of the inner wall surface of the upper end surface portion of the lower casing 114.
- the monopole antenna 123 is formed in an L-shape, and the long piece portion is along the axis of the hinge portion 112, that is, along the inner wall surface of the upper end surface portion of the lower housing, and the long piece portion
- the short piece portion orthogonal to the portion is disposed along the side wall portion adjacent to the upper end surface portion of the lower housing 114.
- the short side portion is connected to a feeding point 124 provided at a corner portion of the circuit board 121 at an end portion separated from the long piece portion.
- the circuit board 121 has a reinforcing conductive plate (second planar member, here, an insert metal plate) 125 that is a plate-like member disposed over the lower region 114a and the upper region 114b (FIG. 2). In this case, it is attached in an electrically connected state (GND connection) to the upper side.
- a reinforcing conductive plate second planar member, here, an insert metal plate
- the reinforcing conductive plate 125 is formed of sheet metal, and is connected to the GND wiring of the circuit board 121 and to the GND wiring of the circuit board 127 described later, and constitutes the GND layer of the circuit board 121 and the circuit board 127. ing.
- the reinforcing conductive plate 125 is provided in a state of being laid between opposing portions of the inner wall surface of the peripheral wall portion of the lower casing 114, and the lower casing has a lower height, that is, a thinner thickness.
- the strength of the body 114 itself is reinforced.
- the reinforcing conductive plate 125 is provided between the opposing portions of the peripheral wall portion (side surface portion, upper and lower end surface portions) of the lower housing that rises from the peripheral edge portion of the bottom surface 115 of the lower housing 114 in the lower housing 114. It is provided to be installed. Further, the reinforcing conductive plate 125 receives a force when an operation key or the like having an operation key or the like in the lower casing 114 is operated on the surface side of the lower casing.
- the reinforcing conductive plate 125 is formed by insert molding in the lower casing 114, and the lower casing 114 itself is made thinner compared to the case where it is separately provided in the lower casing 114. Is planned.
- a battery 130 is disposed adjacent to the circuit board 121 in the horizontal direction on the back surface 115 side of the reinforcing conductive plate 125 disposed in the lower housing 114. That is, the lower region disposed in the lower region 114a of the reinforcing conductive plate 125 forms a bottom surface portion of the battery box 117 that opens on the back surface 115 side as shown in FIG.
- the circuit board 121 is not disposed in the region in which the battery 130 is accommodated. Thereby, the thickness of the portion in which the battery 130 is accommodated in the lower housing 114 is ensured as the accommodating region of the battery 130 because the circuit board 121 is not provided.
- the circuit board is disposed adjacent to the region in which the battery 130 is disposed and along the lower side of the lower housing 114.
- 127 is disposed.
- the circuit board 127 is mounted on the reinforcing conductive plate 125 in a state where GND is electrically connected to the reinforcing conductive plate 125.
- the circuit board 121, the battery 130, and the circuit are provided on one surface side (the back surface side of the housing 110) of the reinforcing conductive plate 125 arranged over substantially the entire surface in a plan view.
- the substrates 127 are arranged side by side on the surface along the back surface 114. That is, in the lower casing 114, the circuit board 127 is disposed in the lower casing 114 without overlapping with the storage area of the battery 130 in the thickness direction, similarly to the circuit board 121. It has been made thinner.
- FIG. 3 is a main part configuration diagram showing a connection state between the battery lid and the circuit board in the lower casing in the mobile phone as the mobile radio apparatus according to Embodiment 1 of the present invention
- FIG. FIG. 5 is a diagram showing the back side of the battery lid.
- the external interface connector 128 is mounted on the circuit board 127, and a charging terminal 129 exposed at the lower side of the lower housing 114 is connected.
- the external interface connector 128 is provided so as to be exposed to the outside by removing a connector lid that is detachably attached to the opening on the lower end surface of the lower housing 114.
- each of the contact members 151 and 152 is formed of a conductive member, and the contact member 151 is formed from one side of the reinforcing conductive plate 125 along one side surface of the casing 114. It is erected while being electrically connected to the conductive plate 125.
- the contact member 152 is disposed on the reinforcing conductive plate 125 so as to face the position spaced apart from the contact member 151 in the width direction.
- the contact member 152 is erected from the circuit board 127 and is electrically connected to the reinforcing conductive plate 125 via the GND pattern of the circuit board 127.
- the GND pattern on one surface side of the circuit board 127 to which the contact member 152 is connected is connected to the reinforcing conductive plate 125 on the other surface side through a through hole.
- contact members 151 and 152 are respectively connected to the battery lid part 140 attached to the lower housing 114 at positions separated from each other as shown in FIGS.
- the contact members 151 and 152 are formed by processing a conductive metal plate, and from the leading ends of the rising pieces 151 a and 152 a rising from the reinforcing conductive plate 125 and the rising pieces 151 a and 152 a. It has contact piece parts 151b and 152b which extend vertically to the upper end side of the lower housing 114 and come into contact with the battery cover part 140 at the contact point 150c.
- the rising pieces 151a and 152a are each plate-shaped and are provided along the inner wall surfaces of both side walls of the lower housing 114.
- contact members 151 and 152 are flexible so as to be elastically deformed in opposite directions, and the portions where the contact points 150c are formed in the contact piece portions 151b and 152b are formed on both side surface portions of the lower housing 114. It is exposed to the outside through the formed opening (see FIG. 1).
- the contact members 151 and 152 are formed at desired positions with respect to the reinforcing conductive plate 125 or the circuit board 127. By changing the formation positions of the contact members 151 and 152, the degree of coupling between the metal top plate and the battery lid 140 can be adjusted, and when the mobile phone 100 is placed on the top plate of the metal desk. In addition, the resonance frequency of the monopole antenna 123 can be adjusted to a desired frequency.
- the contact members 151 and 152 engage with the claw portions 142 provided to protrude inward from the side wall 144 of the battery cover 140, respectively.
- the battery lid 140 is formed by processing a conductive plate-like member, here, a conductive metal plate.
- this battery cover part 140 have an electroconductive member containing an insulator. By adjusting this insulator, the effective length of the battery lid 140 is changed, and the degree of coupling with the metal top plate can be adjusted, and the mobile phone 100 is placed on the top plate of the metal desk. The resonance frequency of the monopole antenna 123 can be adjusted.
- both side wall parts 144 are suspended from both side edge parts of the upper surface part 143 that becomes a part of the back surface 115, and at the front end side parts of these both side wall parts 144.
- a claw portion 142 is formed so as to protrude inward along the upper surface portion 143 from a position corresponding to the contact point 150c.
- Both side walls 144 cover the edge on the back 115 side on both side surfaces of the lower casing 114 when the battery lid 140 is attached to the lower casing 114.
- an upper claw portion 145 that engages with the upper side edge portion 117a (see FIG. 1) of the battery box 117 on the back surface side of the back surface portion is formed on the upper end side portion 140a of the battery lid portion 140.
- the claw portion 142 together with the contact members 151 and 152, form a lock mechanism that detachably holds the battery lid portion 140 in the lower housing 114, and attaches and fixes the battery lid portion 140 to the lower housing 114.
- the battery cover 140 is connected to the reinforcing conductive plate 125 via the contact members 151 and 152 and the GND layer of the circuit board 127, and the GND layer of the circuit board 121 is connected to the reinforcing conductive plate 125. It becomes GND of the feeding point 124 and functions as a ground plane of the monopole antenna 123.
- ribs 146 extending vertically from both side wall portions 144 along the lower end side portion 140b are formed at both ends of the lower end side portion 140b of the battery lid portion 140, respectively. These ribs 146 perform positioning in the moving direction when the battery cover 140 is slid along the back surface 115 of the lower housing 114.
- the circuit board 121, the battery 130, and the circuit board 127 are arranged side by side.
- the reinforcing conductive plate 125 is formed by insert molding on the cover portion of the lower housing 114. On the back side of the battery 130 placed facing the portion disposed in the lower region 114a, the battery 130 is provided. A battery lid 140 is disposed so as to face the battery.
- a monopole antenna 123 connected to the circuit board 121 via the feeding point 124 is short-circuited to the reinforcing conductive plate 125 via the GND pattern of the circuit board 121, and the battery cover 140 is connected to the contact member 151.
- the contact member 152 and the circuit board 127 are connected in a conductive state.
- the metal battery lid 140 is connected to the reinforcing conductive plate 125 via two or more contact portions of contact members 151 and 152 as a lock mechanism for attaching the battery lid 140 to the lower housing 114. ing.
- the mobile phone 100 has a lower housing 114 having a bottom surface 115 exposed to the outside opposite to the operation surface, and a planar shape that is disposed inside the lower housing 114 and connected to the feeding point 124 and the feeding point 124 of the antenna 123.
- Circuit board 121 having a conductive layer, a conductive battery lid 140 that is detachably attached to the lower housing 114 and is part of the bottom surface 115, along the bottom surface 115 and spaced from the bottom surface 115.
- a conductive reinforcing conductive plate 125 that is placed over the substrate 121 and connected to the conductive layer of the circuit board 121, and a battery lid that is provided in connection with the reinforcing conductive plate 125 and attached to the lower housing 114.
- Conductive contact members 151 and 152 that contact the portion 140 are internally attached to the lower housing 114 having a reinforcing conductive plate 125 connected to the feeding point 124 of the antenna 123 on the circuit board 121 and the lower housing 114 so as to be detachable.
- a battery lid 140 serving as a part of the back surface (bottom surface) 115 of the lower housing 114 and the lower housing 114 are provided to be electrically connected to the reinforcing conductive plate 125 and attached to the lower housing 114.
- Contact members 151 and 152 that contact the battery lid 140 are provided.
- the positions of the contact members 151 and 152 between the battery lid portion 140 made of metal (conductive) and the reinforcing conductive plate 125 provided in the lower casing 114 by insert molding can be changed. . That is, by changing the positions of the contact members 151 and 152, the distance between the contact members 151 and 152 can be adjusted, thereby changing the degree of coupling between the battery lid 140 and the metal top plate, and the monopole.
- the resonance frequency of the antenna 123 can be adjusted (controlled) to a desired frequency.
- the battery lid 140 itself can be easily configured with a conductor including an insulator, whereby the resonance frequency of the monopole antenna 123 can be adjusted to a desired frequency.
- the reinforcing conductive plate 125 and the battery cover 140 can be connected to resonate in a desired frequency band, and the antenna gain on the metal plate can be improved to achieve high performance. It is possible to reduce the size and thickness by saving space while ensuring the antenna sensitivity.
- the element to be added to the circuit board and its distance (height from the circuit board to the element) or the spatial volume is not required, and the thinning is achieved.
- An antenna configuration with a high degree of freedom can be realized by utilizing necessary components (here, a metal battery lid 140 covering the battery 130 housed in the lower housing 114).
- the battery lid 140 is electrically connected to the reinforcing conductive plate 125 connected to the circuit board 127 via a reactance element (or reactance circuit). Also good.
- FIG. 6 is a diagram showing a modification of the mobile phone 100 according to Embodiment 1 of the present invention
- FIG. 6A is a side view showing a main part of a connection portion between the battery lid 140 and the contact members 151 and 152.
- 6B is a plan view of the circuit board shown in FIG. 6A.
- a reactance element (reactance circuit) 160 is mounted on the mounting surface of the circuit board 127 together with the contact member 152 and the external interface connector 128 in the modification of the mobile phone 100 shown in FIG. Specifically, the reactance element 160 is provided on the circuit board 127 through the land 125b to which the contact member 152 is connected and the circuit board 127, and is electrically connected to the contact part 125a on the surface opposite to the mounting surface. Between the connected through holes 125c.
- the reinforcing conductive plate 125 to which the antenna feeding point 124 is connected has a high frequency via the reactance element 160 on the battery lid 140 when the mobile phone 100 is placed on the top plate of a metal desk. Connected state.
- the effective length of the battery lid 140 can be easily changed, and the mobile phone 100 can be mounted on a metal desk.
- the degree of coupling between the metal top plate and the battery lid 140 can be finely adjusted.
- the cellular phone 100 uses not only 2 GHz but also 1.7 GHz and 800 MHz, and the frequency band used in the portable wireless device covers a wide range.
- the shape of the reinforcing conductive plate 125 and the positions of the contact members 151 and 152 are as follows. In addition to the adjustment, it becomes easy to obtain a good ground condition at a desired frequency.
- the resonance frequency of the monopole antenna of the mobile phone 100 can be adjusted more effectively, and the reception sensitivity is good. Can be kept in.
- FIG. 7 is an exploded perspective view showing a main configuration of a foldable mobile phone that is a portable radio apparatus according to Embodiment 2 of the present invention.
- the cellular phone is shown in a folded state with the back side facing up.
- FIG. 8 is a main part configuration diagram showing a connection state between the battery lid and the circuit board in the lower housing in the mobile phone as the mobile radio apparatus according to the second embodiment of the present invention, and FIG. It is a figure which shows the connection part by the side of a housing
- This mobile phone 200 differs from the mobile phone 100 corresponding to the first embodiment shown in FIG. 1 only in the configuration of the contact member, and the other components are the same. Therefore, below, the same code
- a first case (lower case) 214 and a second case (upper case) 116 are attached to each other via a hinge portion 112 so as to be rotatable.
- the first casing 214 and the second casing 116 are configured to be foldable.
- a battery box 117 that houses the battery 130 is formed in the bottom surface (corresponding to the back surface of the casing 210) 215 of the first casing 214, and the battery box 117 is attached to the first casing 214.
- the battery lid portion (first planar member) 240 constituting a part of the bottom surface 215 is covered.
- the bottom surface 215 is an outer surface exposed to the outside on the side opposite to the operation surface in the first housing 214.
- This mobile phone 200 has the same main components as the main components of the mobile phone 100 (see FIG. 2). As shown in FIG. The conductive plate 125 is electrically connected at two points via contact members 251 and 252. These contact members 251 and 252 are respectively connected to the battery lid part 140 attached to the lower housing 214 at positions separated from each other. Note that, as with the reinforcing conductive plate 125 of the mobile phone 100, the circuit board 121 and the GND of the circuit board 127 are connected to the reinforcing conductive plate 125.
- the lower housing 214 is configured in the same manner as the lower housing 114, and a portion of the lower housing 214 along the lower side portion of the back surface covered by the battery lid portion 240 has a width direction (short side). Opening portions are formed apart from each other in the direction).
- the opening edge of the battery box 117 formed in a concave shape on the bottom surface 125 of the lower housing 214 is formed of at least an insulating member.
- the lower casing 214 is formed of an insulating member (in this case, resin) in the same manner as the lower casing 114.
- the contact pieces 251b and 252b of the contact members 251 and 252 are arranged to be exposed to the outside through the opening.
- the contact piece portions 251b and 252b are arranged so as to be substantially flush with the back surface 215 of the housing 210 (the back surface of the lower housing 214).
- the contact members 251 and 252 are formed by processing a conductive member (metal plate), and are disposed on the reinforcing conductive plate 125 and the reinforcing conductive plate 125. Stands vertically from the circuit board 127 and comes into contact with the battery lid 240 at the tip.
- a conductive member metal plate
- the contact members 151 and 152 are formed by processing a conductive metal plate, and tips of rising pieces 251 a and 252 a rising from the reinforcing conductive plate 125.
- Contact piece portions 251b and 252b are provided along the rear surface 215 from the rear side.
- the contact piece portions 251b and 252b are formed on the rising piece portions 215a and 252a so as to be elastically deformable in a direction approaching the reinforcing conductive plate 125, and contact portions 251c and 252c protruding to the back side are respectively provided. Have. The contact portions 251 c and 252 c are exposed to the outside from the back surface 215, and contact the upper surface portion 143 of the battery lid portion 240 when the battery lid portion 240 is attached to the lower housing 214.
- the contact members 251 and 252 are formed at desired positions with respect to the reinforcing conductive plate 125 or the circuit board 127 in the same manner as the contact members 151 and 152.
- the contact members 251 and 252 are spaced apart in the lateral direction when the lower casing 214 is viewed in plan, in other words, along the inner side surfaces of both side wall portions extending in the longitudinal direction of the lower casing 214.
- the battery lid portion 240 has a configuration in which the claw portion 142 is omitted from the configuration of the battery lid portion 140, and the functions by the same components are the same as the components of the battery lid portion 140.
- the battery lid portion 240 is formed by processing a plate member having conductivity, here, a metal plate having conductivity.
- a plate member having conductivity here, a metal plate having conductivity.
- the upper surface portion 143 comes into contact with the contact portions 251c and 252c and is electrically connected to the feeding point 124 of the antenna via the contact members 251 and 252.
- this battery lid part 240 may have a conductive member including an insulator, like the battery lid part 140. By adjusting this insulator, the effective length of the battery lid portion 240 electrically connected via the contact members 251 and 252, the reinforcing conductive plate 125, and the circuit boards 121 and 127 is changed.
- the resonance frequency of the monopole antenna 123 can be adjusted when the mobile phone 200 is placed on a top plate of a metal desk.
- the mobile phone 200 is disposed inside the lower housing 214 having the bottom surface 215 exposed to the outside opposite to the operation surface, and is connected to the feeding point 124 and the feeding point 124 of the antenna 123.
- a circuit board 121 having a planar conductive layer and a conductive battery lid 240 that is detachably attached to the lower casing 214 and is part of the bottom surface 215, along the bottom surface 215 and spaced from the bottom surface 215.
- the conductive reinforcing conductive plate 125 disposed on the circuit board 121 and connected to the conductive layer of the circuit board 121 is connected to the reinforcing conductive plate 125 and attached to the lower casing 214.
- Conductive contact members 251 and 252 that contact the battery lid portion 240.
- the mobile phone 200 is detachably attached to the lower housing 214 including a reinforcing conductive plate 125 connected to the feeding point 124 of the antenna 123 on the circuit board 121, and the lower housing 214.
- a battery lid 240 serving as a part of the back surface (bottom surface) 215 of the lower casing 214 and the lower casing 114 are provided so as to be electrically connected to the reinforcing conductive plate 125 and attached to the lower casing 214.
- contact members 251 and 252 that contact the battery lid portion 240.
- the positions of the contact members 251 and 252 between the battery lid portion 240 made of metal (conductive) and the reinforcing conductive plate 125 provided in the lower housing 214 by insert molding are changed. be able to. That is, the position of the contact members 251 and 252 can be changed to adjust the distance between the contact members 251 and 252, so that when the mobile phone 200 is placed on the top of a metal desk, The resonance frequency of the monopole antenna 123 can be adjusted (controlled) to a desired frequency.
- the battery lid 240 itself can be easily configured with a conductor including an insulator, whereby the resonance frequency of the monopole antenna 123 can be adjusted to a desired frequency.
- the battery lid 240 has a configuration in which the claw 142 is omitted in the configuration of the battery lid 140, but the claw 142 may be provided as in the configuration of the battery lid 140.
- the contact portions 251 c and 252 c are preferably in contact with the upper surface portion 143 of the battery lid 240 between the rib 146 and the claw portion 142.
- the rib 146 extends perpendicularly from both side wall portions 144 along the lower end side portion, thereby forming an angle at which three surfaces of the upper surface portion 143, the wall portion 144, and the rib 146 intersect, thereby improving rigidity. it can.
- the claw portion 142 forms a lock mechanism for holding the battery lid portion 240 in the lower housing 114, and thus is integrated with the lower housing 114 in the locked state.
- the contact portions 251c, 252c and the upper surface portion 143 are not in contact with each other. Can be stabilized.
- the cellular phone 200 has a high performance by resonating in a desired frequency band due to the mutual coupling between the top plate of the metal desk and the battery lid 140 and improving the antenna gain on the metal plate.
- it is possible to reduce the size and thickness by saving space.
- the battery cover 240 has a reactance element with respect to the reinforcing conductive plate 125 connected to the feeding point 124, as in the modification of the mobile phone 100 (see FIG. 6). It is good also as a structure electrically connected via.
- FIG. 11 is a view showing a modified example of the mobile phone 200 according to Embodiment 2 of the present invention, and is a side view showing a main part of a connection portion between the battery lid portion 240 and the contact members 251 and 252.
- the reactance element 160 is mounted on the mounting surface of the circuit board 127 together with the contact member 152 and the external interface connector 128.
- the plan view of the circuit board 127 on which the reactance element 160 is mounted is the same as the circuit board shown in FIG.
- the reactance element 160 is provided on the circuit board 127 through a land (not shown) to which the contact member 152 is connected and the circuit board 127, and a contact portion on a surface opposite to the mounting surface. It is provided between the through hole 125c electrically connected to 125a.
- the reinforcing conductive plate 125 to which the antenna feeding point 124 is connected has a high frequency via the reactance element 160 on the battery lid 140 when the mobile phone 100 is placed on the top plate of a metal desk. Connected state.
- the resonance frequency of the monopole antenna of the mobile phone 200 can be reduced. Adjustment can be performed more effectively.
- FIG. 12 is an exploded perspective view showing the main configuration of a foldable mobile phone that is a mobile radio apparatus according to Embodiment 3 of the present invention.
- the cellular phone is shown in a folded state with the back side facing up.
- FIG. 13 is a main part configuration diagram showing a connection state between the battery lid and the circuit board in the lower housing in the mobile phone as the mobile radio apparatus according to Embodiment 3 of the present invention, and FIG. It is the figure which looked at the battery cover part of the telephone from the back side, and FIG. 15 is a schematic diagram of the battery cover part of the mobile phone.
- This mobile phone 300 is different from the mobile phone 200 corresponding to the second embodiment shown in FIG. 7 only in the configuration of the battery lid (first planar member) 340, and the other components are similar. It is. Therefore, below, the same code
- the mobile phone 300 includes a first casing (lower casing) 214 and a second casing (upper casing) in which a battery box 117 is formed on a bottom surface (corresponding to the rear surface of the casing 210) 215. ) 116 is attached to the first casing 214 so as to cover the casing 210 and the battery box 117 that can be folded and rotated with respect to each other via the hinge portion 112 to form a part of the bottom surface 215.
- a battery lid 340 is attached to the first casing 214 so as to cover the casing 210 and the battery box 117 that can be folded and rotated with respect to each other via the hinge portion 112 to form a part of the bottom surface 215.
- the mobile phone 300 has the same main components as the mobile phone 200, and the battery cover 340 has basically the same function as the battery cover 240, and the lower housing It is electrically connected to the reinforcing conductive plate 125 in the body 214 at two points via contact members 251 and 252.
- contact members 251 and 252 are connected to the battery cover 340 attached to the lower casing 214 at positions separated from each other (here, positions spaced apart in the short direction when the lower casing is viewed in plan). . Note that, similarly to the reinforcing conductive plate 125 of the mobile phone 100, the circuit board 121 and the GND of the circuit board 127 arranged in the lower housing 214 are connected to the reinforcing conductive plate 125.
- the battery cover 340 has an insulating sheet 350 having an insulating property on the back surface of the upper surface part 143 of the battery cover 240 (see FIGS. 8 and 10) in the second embodiment. And a conductive sheet 360 having conductivity is attached.
- the insulating sheet 350 is an adhesive sheet having insulating properties
- the insulating sheet (adhesive sheet) 350 is attached in close contact with the upper surface portion 143
- the conductive sheet 360 is in close contact with the insulating sheet 350.
- the conductive sheet 360 is attached to the battery lid 340 with the insulating sheet 350 sandwiched together with the upper surface portion 143.
- the conductive sheet 360 is provided with contact pads 362 corresponding to the positions of the contact points 251c and 252c of the contact pieces 251b and 252b of the contact members 251 and 252. These contact pads 362 come into contact with the contact portions 251 b and 252 b of the contact pieces 251 b and 252 b of the contact members 251 and 252 when the battery lid 340 is attached to the lower housing 214.
- the conductive sheet 360 is disposed opposite to the back surface of the upper surface portion 143 of the battery lid portion 340 with a predetermined distance (here, the thickness of the insulating sheet 350), the upper surface portion 143 and the conductive sheet are disposed. A stray capacitance is generated in the gap with 360.
- the conductive sheet 360 is disposed opposite to the upper surface portion 143 with a certain gap corresponding to the thickness of the insulating sheet 350, and the area S facing the upper surface portion 143 is changed.
- the resonance frequency of the monopole antenna 123 can be adjusted (controlled) to a desired frequency.
- the conductive sheet 360 is formed in a rectangular shape having the same width as that of the upper surface portion 143, the area S facing the upper surface portion 143 is changed by changing the length L in the longitudinal direction. Can be changed. If the length L is formed in a rectangular shape, the resonance frequency of the monopole antenna 123 can be lowered. If the length L is shortened and the area facing the upper surface portion 143 is reduced, the resonance frequency is reduced. Can be high. In the configuration in which contact pads 362 are provided at both ends in the width direction (short direction) of the conductive sheet 360 as in the mobile phone 300, the position of the contact pad 362 is changed when the length L in the longitudinal direction is changed. Change while ensuring.
- the conductive sheet 360 places the portion between the contact pads 362 arranged at the changed position on the upper surface portion 143. Arrange to connect along the way.
- the contact members 251 and 252 on the lower housing 214 side are connected to the conductive sheet 360 with respect to the battery cover 340 having the conductive sheet 360. If so, it is not limited to this.
- one of the contact members 251 and 252 may be configured to directly contact the upper surface portion 143 of the battery lid portion 340.
- FIGS. 16 and 17 are main part configuration diagrams for explaining a modification of mobile phone 300 according to Embodiment 3 of the present invention.
- a notched portion 364 is formed by notching a portion provided with a contact pad with which the contact member 252 contacts.
- a notched portion 366 is formed by notching a portion provided with a contact pad with which the contact member 251 contacts.
- connection structure between the contact member and the battery cover may be the same as that of the contact members 151 and 152 of the mobile phone 100 of the first embodiment.
- the configuration of the battery lid 340 is such that the conductive sheet 360 via the insulating sheet 350 is disposed up to the contact portion of the claw 142 that contacts the contact pieces 151b and 152b of the contact members 151 and 152.
- the reinforcing conductive plate 125, the circuit board 127, and the battery lid 340 are connected at two points via the contact members 251 and 252, and at least one of the contact members 251 and 252 is connected.
- a reactance element may be interposed in the wiring.
- the land 125b to which the contact members 152 and 252 are connected and the circuit board 127 are provided on the circuit board 127 so as to pass through the circuit board 127.
- a through hole 125c that is electrically connected to the contact portion 125a on the surface.
- the frequency band used in the portable wireless device covers a wide range, and in addition to the shape of the reinforcing conductive plate 125 and the position adjustment of the contact members 151 and 152, it is easy to obtain good ground conditions at a desired frequency. Become.
- the reinforcing conductive plate 125 is formed in the lower casings 114 and 214 by insert molding in the mobile phones 100, 200, and 300, but is not limited thereto.
- the reinforcing conductive plate 125 is insert-molded in the lower casings 114 and 214, so that the casing itself is thinned.
- the battery lid portions 140, 240, 340, 340A, and 340B that cover the battery 130 housed in the casing are formed of a metal plate. Therefore, the thickness is reduced while ensuring the strength of the casing itself.
- the lower casings 114 and 241 to which the battery lid portions 140, 240, 340, 340A, and 340B are attached are formed of an insulating resin, but the battery lid portions 140, 240, 340, 340A, and 340B are attached to the lower housings 114 and 214 to form the back surfaces of the housings 110 and 210 themselves, and the reinforcing conductive plate 125 is provided only at two points of the contact members 151, 152, 251, and 252.
- the lower housings 114 and 214 may be configured in any way as long as they are connected to the GND conductors of the circuit board 121 and the circuit board 127 via the.
- the mobile phone according to the present invention is not limited to the above embodiments, and can be implemented with various modifications.
- the portable wireless device according to the present invention is useful as a mobile phone because it can maintain good reception sensitivity even when placed on a metal top plate and can be thinned. is there.
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Abstract
Description
図1は、本発明の実施の形態1に係る携帯無線装置である折り畳み式の携帯電話機の要部構成を示す分解斜視図である。なお、図1では、携帯電話機は折り畳まれた状態で背面側を上側にして示されている。
図7は、本発明の実施の形態2に係る携帯無線装置である折り畳み式の携帯電話機の要部構成を示す分解斜視図である。なお、図7では、携帯電話機は折り畳まれた状態で背面側を上側にして示されている。また、図8は、本発明の実施の形態2に係る携帯無線装置としての携帯電話機において電池蓋部と下筐体内の回路基板との接続状態を示す要部構成図、図9は、同下筐体側の接続部分を示す図であり、図10は、電池蓋部を裏面側から見た図である。
図12は、本発明の実施の形態3に係る携帯無線装置である折り畳み式の携帯電話機の要部構成を示す分解斜視図である。なお、図12では、携帯電話機は折り畳まれた状態で背面側を上側にして示されている。また、図13は、本発明の実施の形態3に係る携帯無線装置としての携帯電話機において電池蓋部と下筐体内の回路基板との接続状態を示す要部構成図、図14は、同携帯電話機の電池蓋部を裏面側から見た図であり、図15は、同携帯電話機の電池蓋部の模式図である。
Claims (15)
- 操作面と前記操作面と反対の面であって外部に露出する外面とを有する筐体と、
アンテナと、
前記筐体の内部に配置され、前記アンテナの給電点と面状の導電層とを有する基板と、
前記筐体に脱着自在に取り付けられ、前記外面の一部となる導電性の第1面状部材と、
前記導電層と電気的に接続され、前記第1面状部材に当接する導電性の接点部材と、を有する携帯無線装置。 - 前記操作面に沿うとともに前記基板に重ねて配置され、前記基板の導電層に電気的に接続される一方で、前記接点部材と接続される導電性の第2面状部材を有する請求項1記載の携帯無線装置。
- 前記外面の周縁部から前記操作面側に立ち上がり、対向する内壁面を有する周壁部を備え、
前記第2面状部材は、前記筐体内において、前記内壁面間に架設される請求項2記載の携帯無線装置。 - 前記第1面状部材は、前記接点部材以外は絶縁性を有する前記筐体の部位に取り付けられる請求項1記載の携帯無線装置。
- 前記筐体は、前記外面に電池を収容する凹部を備え、
前記第1面状部材は、前記電池を覆う電池蓋である請求項1記載の携帯無線装置。 - 前記筐体は、前記操作面と前記外面との間に、第1領域と、前記第1領域と前記操作面に沿って隣り合う第2領域とを有し、
前記基板は第1領域に配置され、
前記電池は、前記第2領域に配置されている請求項5記載の携帯無線装置。 - 前記接点部材は、リアクタンス回路を介して前記導電層に電気的に接続される請求項1記載の携帯無線装置。
- 前記接点部材は、第1接点部材と、前記第1接点部材と離間して配置された第2接点部材とからなる請求項1記載の携帯無線装置。
- 前記筐体は平面視矩形状に形成され、
前記第1面状部材は、前記筐体の短手方向に渡る長さを有し、
前記第1接点部材と前記第2接点部材は平面視して前記筐体の短手方向に離間して配置されている請求項8記載の携帯無線装置。 - 前記第1面状部材の前記筐体側の面に密着された絶縁シートと、
前記絶縁シートに密着され、前記第1面状部材と共に前記絶縁シートを挟む導電シートとを有し、
前記第1接点部材は前記第1面状部材に当接し、
前記第2接点部材は前記導電シートに当接する請求項8記載の携帯無線装置。 - 前記第1面状部材の前記筐体側の面に密着された絶縁シートと、
前記絶縁シートに密着され、前記第1面状部材と共に前記絶縁シートを挟む導電シートとを有し、
前記第1接点部材及び前記第2接点部材は前記導電シートに当接する請求項8記載の携帯無線装置。 - 前記第1面状部材を前記筐体に脱着自在に取り付ける導電性の係止部を前記第1面状部材は備え、
前記係止部が前記接点部材と接する請求項1記載の携帯無線装置。 - 前記第1面状部材を前記筐体に脱着自在に取り付ける係止部と、前記第1面状部材の端辺部に沿って側壁部から垂直に延びるリブとを前記第1面状部材は備え、
前記第1面状部材と前記接点部材が、前記係止部と前記リブの間で当接する請求項1記載の携帯無線装置。 - 前記筐体は、基端部側に設けられたヒンジ部を介して、表示面を有する第2筐体が回動自在に取り付けられるとともに、前記ヒンジ部を介して前記第2筐体を折り畳むことにより前記操作面に対向して前記表示面が配置される第1筐体であり、
前記第1面状部材は、前記筐体に、前記筐体の外面部分において、前記ヒンジ部から離間する先端部側の一部として取り付けられ、
前記給電点は、前記筐体内に配置された前記基板に、前記第1面状部材よりもヒンジ部側に配置されている請求項1記載の携帯無線装置。 - 外面を有する筐体と、
アンテナと、
前記筐体の内部に配置され、前記アンテナの給電点と面状の導電層とを有する基板と、
前記筐体に脱着自在に取り付けられ、前記外面の一部となる導電性の第1面状部材と、
前記導電層と電気的に接続され、前記第1面状部材に当接する導電性の接点部材と、を有する携帯無線装置。
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CN2008801241417A CN101911381A (zh) | 2008-01-15 | 2008-12-26 | 无线移动装置 |
US12/812,452 US8203493B2 (en) | 2008-01-15 | 2008-12-26 | Portable wireless device |
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JP2008006314A JP2009171163A (ja) | 2008-01-15 | 2008-01-15 | 携帯無線装置 |
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US20100277377A1 (en) | 2010-11-04 |
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