WO2003081972A1 - Terminal mobile - Google Patents

Terminal mobile Download PDF

Info

Publication number
WO2003081972A1
WO2003081972A1 PCT/JP2003/002145 JP0302145W WO03081972A1 WO 2003081972 A1 WO2003081972 A1 WO 2003081972A1 JP 0302145 W JP0302145 W JP 0302145W WO 03081972 A1 WO03081972 A1 WO 03081972A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit board
terminal device
shield member
box
circuit
Prior art date
Application number
PCT/JP2003/002145
Other languages
English (en)
Japanese (ja)
Inventor
Hiroyuki Sato
Original Assignee
Matsushita Electric Industrial Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co., Ltd. filed Critical Matsushita Electric Industrial Co., Ltd.
Priority to AU2003221305A priority Critical patent/AU2003221305A1/en
Publication of WO2003081972A1 publication Critical patent/WO2003081972A1/fr

Links

Classifications

    • 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
    • H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0007—Casings
    • H05K9/002—Casings with localised screening
    • H05K9/0022—Casings with localised screening of components mounted on printed circuit boards [PCB]
    • H05K9/0024—Shield cases mounted on a PCB, e.g. cans or caps or conformal shields
    • H05K9/0032—Shield cases mounted on a PCB, e.g. cans or caps or conformal shields having multiple parts, e.g. frames mating with lids

Definitions

  • the present invention relates to a portable terminal device such as a portable telephone which can be carried and carried by a person, and more particularly to a portable terminal device having a shield structure of an electronic circuit.
  • FIG. 8 and 9 show configuration examples of a conventional portable terminal device.
  • FIG. 8 is an exploded perspective view showing a schematic configuration of a conventional portable terminal device
  • FIG. 9 is a sectional view of the portable terminal device shown in FIG.
  • the mobile terminal device includes an upper housing 101 and a lower housing 102, and includes a first circuit board 103 and a second circuit board 104 built therein.
  • the first circuit board 103 and the second circuit board 104 are connected and overlapped via connectors 105a and 105b, so that both circuits are electrically connected.
  • the upper housing 101 is provided with key buttons 106 constituting an operation unit
  • the first circuit board 103 is provided with a switch 107 which is turned on when the key button 106 is pressed. It is arranged to form a keyboard.
  • a shield case 108 made of a resin member is provided between the first circuit board 103 and the second circuit board 104, and the shield case 108 is formed by an engagement claw.
  • the first and second circuit boards 103 and 104 are engaged and fixed by being engaged therewith.
  • the shield case 108 has a conductive film on the surface of the resin member, and is provided on the second circuit board 104. It has a function of shielding the mounted circuit components 109 such as high-frequency circuits, and a function of a spacer for holding the first and second circuit boards 103 and 104 at predetermined intervals. I have.
  • a receiving rib 110 is formed in the lower housing 102, and the receiving rib 110 supports the second circuit board 1 • 4 from below.
  • the user pressed down the key button 106 with the finger 111 as shown in FIG. 9B from the state shown in FIG. 9A.
  • the first circuit board 103 is deformed while receiving the stress caused by the generated stress 113, and the stress is propagated to the shield case 108 below.
  • the shield case 108 is made of a molded product made of a resin material, etc., the strength of the top portion 108 a with respect to the vertical force is weak, and it is deformed together with the first circuit board 103 when pressed. I do.
  • stress is applied to the inner circuit component 109, and distortion is generated in the circuit component 109 and the joints 111 such as solder, thereby causing malfunctions and the like.
  • FIG. 10 shows another configuration example of a structure for protecting circuit components on a substrate.
  • the circuit board 1 2 1 has a circuit component 1 2 2 composed of a semiconductor chip, etc. mounted thereon, and a sheet metal case 1 2 3 for covering and protecting the circuit component 1 2 2 is provided thereon.
  • the sheet metal case 123 is formed in a box shape by bending a metal plate, and is fixed to the conductive pattern formed on the surface 121 a of the circuit board 122 by soldering or the like.
  • the sheet metal case 123 may also serve as a shield member.
  • the shield structure of the resin member shown in Figs. 8 and 9 with the shield case has sufficient strength to protect the circuit board and circuit components from stress caused by pressing down the key button.
  • To have a configuration with 03 02145 There is a problem that a large gap is required and the thickness of the device becomes large.
  • circuit component reinforcement structure shown in FIG. 10 in which the sheet metal member case is joined to the circuit board makes it difficult to check and replace the circuit components covered by the sheet metal case, When mounting parts on the back surface, the sheet metal case may fall off by its own weight, causing some problems in terms of workability and cost during and after manufacturing, etc.
  • the present invention has been made in view of the above circumstances, and has as its object to realize a thin and compact device, can be configured at a low cost with good workability, and has a reliable shield structure and sufficient strength.
  • a portable terminal device that can obtain a component protection structure o
  • the present invention provides an operation unit comprising: a first circuit board in a housing; and a second circuit board so as to overlap below the first circuit board, and performing a pressing operation on a housing surface portion above the first circuit board. And a shield member provided between the first circuit board and the second circuit board, the shield member having a shield function and holding these circuit boards at a predetermined interval.
  • the shield member is characterized in that a frame body made of an elastic member having a conductive material on the surface is integrated with a box body made of a sheet metal member inserted and arranged in a space of the frame body.
  • the shield member in which the frame body made of the elastic member and the box body made of the sheet metal member are integrated is provided between the two circuit boards in a structure independent of the circuit board. Shielding function and sufficient strength even when
  • the shield member can be easily attached to and detached from the circuit board, workability during assembly, checking, and replacement of parts is good, and it can be constructed at low cost.
  • the shield member is characterized in that the box body is provided in a plurality of space portions of the frame body.
  • the shield structure and the protection structure can be arbitrarily configured according to the arrangement of the circuit components mounted on the circuit board.
  • the shield member has a protrusion on an inner wall of a space of the frame into which the box is inserted, and the protrusion is provided at a position corresponding to the protrusion on a side wall of the box. It is characterized by having a fitting hole.
  • the frame and the box of the shield member are fitted and integrated, reliable conduction and fixation is achieved in the shield member composed of a plurality of members.
  • the frame of the elastic member is elastically deformed, and the projection engages with the hole of the box, so that both members can be easily fitted together.
  • the shield member has an extension portion formed by extending a side wall portion of the box body formed in a box shape so as to cover a circuit component on the second circuit board into an L-shaped cross section.
  • a contact portion for contacting the second circuit board is provided in the extension portion of
  • the contact portion corresponding to one side of the end portion of the L-shaped cross section in a state where the box body is sandwiched between the circuit board and the frame body. Contacts the circuit board. At this time, the abutting portion of the box has a sufficient area and is securely brought into contact with the circuit board to conduct electricity.
  • the shield member has an extension formed by extending at least one side wall of the box formed in a box shape so as to cover a circuit component on the second circuit board in a U-shaped cross section.
  • the extension portion includes a contact portion that contacts the second circuit board, and a fitting receiving portion that receives and fits the frame body.
  • FIG. 1 is a perspective view showing an external configuration of a portable terminal device according to an embodiment of the present invention.
  • FIG. 2 is an exploded perspective view showing a member configuration of a second housing provided with a shield structure in the mobile terminal device according to the present embodiment
  • FIG. 3 is a perspective view showing a configuration of the shield member according to the present embodiment
  • FIG. 4 is a plan view of the shield member according to the present embodiment as viewed from above
  • FIG. 5 is a cross-sectional view of the shield member of FIG.
  • FIG. 6 is a plan view illustrating another configuration example of the shield member according to the present embodiment.
  • FIG. 7 is a cross-sectional view illustrating the shield structure of the portable terminal device according to the present embodiment. Is an exploded perspective view showing a schematic configuration of a conventional portable terminal device,
  • FIG. 9 is a cross-sectional view showing a shield structure of a conventional portable terminal device.
  • FIG. 10 is a perspective view showing another configuration example of a protection structure for circuit components on a substrate.
  • reference numeral 10 denotes a mobile terminal device
  • 11 denotes a first housing
  • 12 denotes a second housing
  • 21 denotes an upper housing
  • 22 denotes a lower housing
  • 23 denotes a second housing.
  • FIG. 1 is a perspective view showing an external configuration of a mobile terminal device according to an embodiment of the present invention.
  • FIG. 2 is an exploded perspective view showing a member configuration of a second housing provided with a shield structure in the mobile terminal device. is there.
  • the mobile terminal device 10 includes a first housing 11 and a second housing 12 that are rotatably connected by a hinge portion 13. Can be freely opened and closed as needed when used for voice or data communications.
  • the first housing 11 is provided with a display section 14 such as a liquid crystal display (LCD) for performing various displays during operation, and a receiver 15 for receiving a call.
  • the second housing 12 has an antenna 16 extending from the hinge 13 end, and the front is opened with the housing open as shown in FIG. Each side for operation)
  • An operation unit 17 having a seed key button and a microphone 18 for transmission are provided. As shown in FIG.
  • the second housing 12 has an upper housing 21 and a lower housing 22 formed of ABS resin or the like, and includes a first circuit board 23 and a second The circuit board 24 is built in. Between the first circuit board 23 and the second circuit board 24, there is provided a shield member 26 for shielding and protecting the circuit components 30 mounted on the second circuit board 24.
  • the shield member 26 is attached and fixed to the first and second circuit boards 23 and 24 by engaging claws.
  • the shield member 26 also has a function of a spacer for holding the first and second circuit boards 23, 24 at a predetermined interval, and the shield member 26 allows the two circuit boards 23, 2 4 are stacked at predetermined intervals to form a unit.
  • a unit 25 in which a plurality of key buttons constituting the operation unit 17 are integrally arranged is provided between the upper housing 21 and the first circuit board 23, a unit 25 in which a plurality of key buttons constituting the operation unit 17 are integrally arranged is provided.
  • the key unit 25 hard button keys made of a resin material or the like are arranged side by side on a soft base sheet made of a silicone rubber or the like.
  • FIG. 3 is a perspective view showing the configuration of the shield member
  • FIG. 4 is a plan view of the shield member as viewed from above
  • FIG. 5 is a cross-sectional view of the shield member of FIG.
  • the shield member 26 is made of a frame 27 made of an elastic member formed by molding a resin material such as ABS resin into a frame shape, and a rigid body formed by bending a metal plate material into a box shape And a box 28 made of a sheet metal member.
  • the frame 27 has a surface 27 a of an elastic member coated with a conductive film of a conductive material, and a projection 27 c for fitting is formed on an inner wall of a space 27 b partitioned by the frame. ing. Further, an engagement claw 27 d engaging with the first circuit board 23 and an engagement claw 27 e engaging with the second circuit board 24 are formed to extend vertically.
  • the box 28 has a hole 28a that fits with the projection 27c of the frame 27 on the side wall obtained by bending the sheet metal member.
  • FIG. 4 shows a state in which the frame 27 of the shield member 26 and the box 28 are integrally connected.
  • the box 28 has an extended portion 31 having an L-shaped cross section at one side edge, and has a sufficient area with the second circuit board 24 when assembling the device.
  • a contact portion 31 a to be held and contacted and a fitting receiving portion 31 b for receiving the lower surface of the frame 27 are provided.
  • a U-shaped extension 32 is formed at the other side edge of the box 28 facing the other side, and the contact portion 3 has a sufficient area and contacts the second circuit board 24. 2a and a fitting receiving portion 32b for accommodating the lower surface of the frame 27 are provided.
  • FIG. 6 is a plan view showing another configuration example of the shield member.
  • the shield member 36 in this example has a configuration in which, in addition to the configuration of the shield member 26 shown in FIGS. 3 to 5, another box 29 is provided and fitted to the frame 27. ing. In this way, by providing a plurality of boxes and inserting them into a plurality of spaces of the azure body and fitting them, it becomes possible to shield and protect the mounted circuit components according to the arrangement configuration of the circuit board.
  • FIG. 7 is a sectional view showing the shield structure of the mobile terminal device according to the present embodiment.
  • the shield member 26 is sandwiched between the first circuit board 23 and the second circuit board 24 and is engaged with each board by engagement claws 27 d and 27 e to be mounted and fixed,
  • the board unit composed of the two circuit boards is housed in the upper housing 21 and the lower housing 22.
  • a switch 41 that is turned on when a key button 25a of the unit 25 is pressed is disposed correspondingly.
  • a circuit component 30 having a high-frequency circuit such as a wireless circuit is mounted on the second circuit board 24 and is electrically and mechanically connected by a joint 42 such as solder.
  • the box 28 of the shield member 26 integrated with the frame 27 is disposed so as to cover the circuit component 30 mounted on the second circuit board 24.
  • the lower housing 22 that receives the second circuit board 24 has Ribs 43 are formed.
  • the stress generated by the stress 45 causes the first circuit board 2
  • the box 28 of the shield member 26 arranged at the bottom of the key resists the stress caused by the stress 45 to minimize the deformation.
  • the top surface 28b of the box 28 made of sheet metal has a rigidity that can repel the stress 45 during the pressing operation, and the box is designed to prevent distortion of the internal circuit components 30 and the joints 42.
  • a protective structure that supports the entire body 28 is formed.
  • the stress 45 acting downward when the key button 25 a is pressed is transmitted to the second circuit board 24 from the contact portions 31 a and 32 a of the box 28.
  • the receiving ribs 43 of the lower housing 22 are provided at the positions of the contact portions 31a and 32a, that is, vertically below the position of the frame 27 of the shield member 26. Therefore, the second circuit board 24 between the contact portion 31a and the contact portion 32a has a structure in which deformation and distortion do not occur, and a further protection structure is realized.
  • the box 28 since the box 28 has sufficient strength, it is not necessary to provide many gaps between the box 28 and the first circuit board 23, and the thickness can be reduced.
  • the shield member 26 composed of the frame 27 and the box 28 is required to be in contact with the ground pattern of the second circuit board 24 at the contact portions 31a and 32a, and to be conducted. A good shielding function.
  • the shield member 26 since the shield member 26 is only fixed to the first and second circuit boards 23 and 24 by the engagement claws 27 d and 27 e, the shield member 26 can be easily attached and detached.
  • a shield member integrating a frame body made of an elastic member and a box body made of a sheet metal member between two circuit boards in a structure independent of the circuit boards. Even when the device is made thinner and smaller by reducing the gap between the substrates, a reliable shielding function and a sufficient strength component protection function can be obtained. The internal circuit components can be protected with sufficient strength against the external stress such as pressing operation by a box made of a hard sheet metal member.
  • the shield member since the shield member has a structure that can be easily attached to and detached from the circuit board, it has good workability when assembling, checking parts on the circuit board, and replacing parts, and can be configured at low cost. P leak 3/02145.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Mounting Of Printed Circuit Boards And The Like (AREA)
  • Telephone Set Structure (AREA)

Abstract

Selon l'invention, lorsque l'on appuie sur une touche (25a), un second substrat de circuit (24) et une partie circuit (30) doivent être protégés des contraintes externes par un boîtier (28). Un terminal mobile présente un premier substrat de circuit (23) disposé dans une enceinte (11) et un second substrat de circuit (24) disposé dans une enceinte (12), et un élément de protection (26) est intercalé entre le premier substrat de circuit (23) et le second substrat de circuit (24). L'élément de protection (26) comprend une enceinte (27) constituée d'un matériau élastique et un boîtier (28) inséré dans l'espace de l'enceinte (27). L'enceinte et le boîtier forment une seule pièce et sont fixés au premier substrat de circuit (23) et au second substrat de circuit (24) par des pattes de fixation (27d, 27e).
PCT/JP2003/002145 2002-03-25 2003-02-26 Terminal mobile WO2003081972A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003221305A AU2003221305A1 (en) 2002-03-25 2003-02-26 Mobile terminal device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002-083839 2002-03-25
JP2002083839A JP2003283176A (ja) 2002-03-25 2002-03-25 携帯端末装置

Publications (1)

Publication Number Publication Date
WO2003081972A1 true WO2003081972A1 (fr) 2003-10-02

Family

ID=28449189

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2003/002145 WO2003081972A1 (fr) 2002-03-25 2003-02-26 Terminal mobile

Country Status (3)

Country Link
JP (1) JP2003283176A (fr)
AU (1) AU2003221305A1 (fr)
WO (1) WO2003081972A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7859591B2 (en) 2006-12-15 2010-12-28 Fujitsu Limited Electronic apparatus and camera module unit

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100639880B1 (ko) 2004-12-30 2006-10-30 엘지전자 주식회사 이동통신단말기의 액정표시부 백화방지구조
JP4684830B2 (ja) * 2005-02-25 2011-05-18 京セラ株式会社 携帯電子機器
JP4652168B2 (ja) * 2005-07-28 2011-03-16 京セラ株式会社 携帯電子機器
JP4527035B2 (ja) * 2005-09-01 2010-08-18 三菱電機株式会社 シールド構造
JP4702792B2 (ja) * 2005-12-02 2011-06-15 京セラ株式会社 無線通信端末
JP4675775B2 (ja) * 2005-12-27 2011-04-27 京セラ株式会社 携帯無線機
JP4668216B2 (ja) * 2007-02-08 2011-04-13 京セラ株式会社 スライド式携帯端末機
JP4536103B2 (ja) * 2007-10-19 2010-09-01 パナソニック株式会社 携帯端末装置
JP5609294B2 (ja) * 2010-06-16 2014-10-22 株式会社デンソーウェーブ 携帯端末

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5596487A (en) * 1995-07-31 1997-01-21 Motorola, Inc. Apparatus for RF shielding radio circuitry
JPH09265857A (ja) * 1996-03-28 1997-10-07 Kokusai Electric Co Ltd スイッチ機構
JPH11163554A (ja) * 1997-12-01 1999-06-18 Matsushita Electric Ind Co Ltd 押釦装置
JPH11327759A (ja) * 1998-05-18 1999-11-30 Toshiba Corp 電子機器
EP1030496A2 (fr) * 1999-02-16 2000-08-23 Matsushita Electric Industrial Co., Ltd. Appareil téléphonique portable
JP2001024375A (ja) * 1999-07-13 2001-01-26 Hitachi Ltd シールド構造
JP2003060365A (ja) * 2001-08-21 2003-02-28 Mitsubishi Electric Corp 携帯端末

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5596487A (en) * 1995-07-31 1997-01-21 Motorola, Inc. Apparatus for RF shielding radio circuitry
JPH09265857A (ja) * 1996-03-28 1997-10-07 Kokusai Electric Co Ltd スイッチ機構
JPH11163554A (ja) * 1997-12-01 1999-06-18 Matsushita Electric Ind Co Ltd 押釦装置
JPH11327759A (ja) * 1998-05-18 1999-11-30 Toshiba Corp 電子機器
EP1030496A2 (fr) * 1999-02-16 2000-08-23 Matsushita Electric Industrial Co., Ltd. Appareil téléphonique portable
JP2001024375A (ja) * 1999-07-13 2001-01-26 Hitachi Ltd シールド構造
JP2003060365A (ja) * 2001-08-21 2003-02-28 Mitsubishi Electric Corp 携帯端末

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7859591B2 (en) 2006-12-15 2010-12-28 Fujitsu Limited Electronic apparatus and camera module unit

Also Published As

Publication number Publication date
AU2003221305A1 (en) 2003-10-08
JP2003283176A (ja) 2003-10-03

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