JP2008219662A - Portable terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable terminal which can be small-sized and thinned, and in which the number of components is reduced and rigidity is improved. <P>SOLUTION: A portable terminal 1 according to the present invention comprises: a circuit board 10 on which an electronic component 11a to be shielded and a wiring pattern are mounted; a shield frame 12 which includes a side plate 12s surrounding and shielding the electronic component 11a and the wiring pattern and a top plate 12t which covers and shields the upper part of the electronic component 11a and the wiring pattern and on a part of which an opening 12t1 is formed, and in which the side plate 12s is fixed on the circuit board 10; and a housing reinforcing member 9 which is formed while being fixed in a housing case 7 for reinforcing the housing case 7 and is attached onto the top plate 12t in a form where the opening 12t1 of the top plate 12t is closed and shielded. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

    The present invention relates to a portable terminal including a circuit board having a circuit such as a wiring pattern and an electronic component that require a shield structure.

    2. Description of the Related Art Conventionally, as shown in FIG. 8 that shows an open state, a mobile phone 100 that is an aspect of a mobile terminal includes a main body 101 in which a control unit (not shown) is housed, and the main body 101 can be freely opened and closed. And a lid 102 having a liquid crystal display unit 106 coupled with a hinge h.

  The main body 101 is provided with a key case 108 that covers the upper surface of the housing case 107, and a plurality of key tops 103 for operating the mobile phone 100, a key top 104 for multifunction keys, and a determination key The key top 105 and the like are exposed to the outside.

  9 removes the lid 102 of the cellular phone 100 shown in FIG. 8 from the hinge h portion, and also has a plurality of ten key mechanism portions having a key top 103, a multifunction key mechanism portion having a key top 104, and a key. FIG. 5 is a perspective view of the main body 101 in a state where a mechanism portion of a determination key having a top 105 is removed from a casing case 107 together with a key case 108.

  Since the casing case 107 is a plastic molded product such as ABS, a casing reinforcing sheet metal 108 made of a stainless steel plate is fixed for the purpose of reinforcing its strength, as shown in FIG.

  A circuit board 109 on which a wiring pattern is printed and various electronic components are mounted is arranged below the case reinforcing sheet metal 108 to control the mobile phone 100.

  As shown in FIG. 10 which is an enlarged cross-sectional view taken along the line CC of FIG. 9, among the various electronic components on the circuit board 109, the electronic components 110,... 112 is shielded.

The shield frame 111 has a side plate 111s and a top plate 111t having an opening 110t1 formed in a part thereof. The top plate 111t covers and shields the electronic components 110,. At the same time, the side plate 111s is soldered on the circuit board 109 so as to surround and shield the periphery of the electronic components 110,... And the wiring pattern.

The shield cover 112 made of a thin stainless steel plate closes the opening 110t1 of the top plate 111 of the shield frame 111 to shield the electronic components 110,... And the wiring pattern. A part thereof is elastically deformed and attached (for example, Patent Document 1).
JP 2006-67524 A

    By the way, in order to reduce the mounting area for the purpose of reducing the size around the circuit board 109, the shield structure of the circuit board 109 needs to be reduced in size and thickness. It was difficult to plan.

  On the other hand, since the casing case 107 is a plastic thin plate, it needs to have high rigidity, and in order to realize a small and thin mobile phone 100, it is desired to reduce the number of components.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a portable terminal that can be reduced in size and thickness, the number of parts is reduced, and rigidity is improved.

    To achieve the above object, a portable terminal according to claim 1 of the present invention includes a circuit board on which an electronic component and a wiring pattern that require shielding are mounted, a side plate that surrounds and shields the periphery of the electronic component and the wiring pattern, and A shield frame that covers and shields the upper part of the electronic component and the wiring pattern and has an opening formed in a part thereof, a shield frame in which the side plate is fixed on the circuit board, and a reinforcing case And a case reinforcing member attached to the top plate in a manner to close and shield the opening of the top plate.

  A portable terminal according to claim 2 of the present invention includes a circuit board on which an electronic component and a wiring pattern that require shielding are mounted, a side plate that surrounds and shields the periphery of the electronic component and the wiring pattern, and an upper side of the electronic component and the wiring pattern. A shield frame that has an opening formed in a part thereof, and a shield frame that is fixed on the circuit board, and a side frame that is fixed to the case to reinforce the case And a substrate fixing part formed by bending from the main body part so as to abut against the circuit board, and the main body part closes and shields the opening of the top plate. And a case reinforcing member soldered on the circuit board.

    As described above in detail, the portable terminal according to claim 1 of the present invention includes a circuit board on which an electronic component and a wiring pattern that require shielding are mounted, a side plate that surrounds and shields the periphery of the electronic component and the wiring pattern, and A shield frame that covers and shields the upper part of the electronic component and the wiring pattern and has an opening formed in a part thereof, a shield frame in which the side plate is fixed on the circuit board, and a reinforcing case And a housing reinforcing member attached to the top plate in a manner that closes and shields the opening of the top plate and shields the opening of the top plate of the shield frame. The conventional shield cover that closes and shields is not required, and the number of parts can be reduced, and the occupied space of the shield cover is eliminated and the mobile terminal can be made smaller and thinner.

  In addition, since the case reinforcing member that reinforces the case is attached to the top plate of the shield frame fixed on the circuit board, the case case is integrated with the circuit board, and the rigidity of the case case is improved. To do.

  A portable terminal according to claim 2 of the present invention includes a circuit board on which an electronic component and a wiring pattern that require shielding are mounted, a side plate that surrounds and shields the periphery of the electronic component and the wiring pattern, and an upper side of the electronic component and the wiring pattern. A shield frame that has an opening formed in a part thereof, and a shield frame that is fixed on the circuit board, and a side frame that is fixed to the case to reinforce the case And a substrate fixing part formed by bending from the main body part so as to abut against the circuit board, and the main body part closes and shields the opening of the top plate. Includes a case reinforcing member that is soldered onto the circuit board, so that there is no need for fixing parts such as screws for attaching the case reinforcing member to the top plate of the shield frame. The number of parts can be reduced.

  In addition, since the case reinforcing member fixed to the case is directly soldered to the circuit board, the case reinforcing member is joined to the circuit board over a wide area, and the case case and the circuit board are integrated. The rigidity of the body case is improved.

  Further, the conventional shield cover for closing and shielding the opening of the top plate of the shield frame becomes unnecessary, the number of parts can be reduced, and the space occupied by the shield cover is eliminated, and the portable terminal can be reduced in size and thickness.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  A mobile phone (mobile terminal) 1 according to a first embodiment to which the present invention is applied includes a main body 2 in which a control unit (not shown) is housed, and a main body 2 as shown in FIG. And a lid 3 having a liquid crystal display portion 3h that is coupled to a hinge h so as to be freely opened and closed.

  The main body 2 is provided with a key case 8 that covers the upper surface of the housing case 7, and a plurality of key tops 4 for operating the cellular phone 1, a key top 5 for multifunction keys, and an enter key The key top 6 and the like are exposed to the outside.

  FIG. 2 shows the cellular phone 1 shown in FIG. 1 with the lid 3 removed from the hinge h portion, a plurality of ten key mechanism portions having key tops 4, a multi-function key mechanism portion having key tops 5, and a key. FIG. 4 is a perspective view of the main body 2 in a state where a mechanism portion or the like of a determination key having a top 6 is removed from a casing case 7 together with a key case 8.

As shown in FIG. 2, the housing case 7 is a plastic molded product such as ABS. Therefore, for the purpose of reinforcing the strength, for example, a housing reinforcing sheet metal (housing reinforcing member) 9 made of a stainless steel plate is provided. It is fixed.

  FIG. 3 is a perspective view showing the housing reinforcing sheet metal 9 of the main body 2 of FIG.

  As shown in FIG. 3, a circuit board 10 on which a wiring pattern is printed and various electronic components 11,... Are mounted is disposed below the casing reinforcing sheet metal 9 in order to control the mobile phone 1. Has been.

  Among the electronic components 11,... And the wiring patterns, the electronic components 11a,... And the wiring patterns that need to shield and shield electromagnetic waves are a shield frame 12 and a case reinforcing sheet metal that are soldered onto a circuit board 10 to be described later. 9 is shielded from the outside and shielded.

The shield frame 12 is manufactured using, for example, a stainless steel plate and has a flat rectangular parallelepiped shape having a side plate 12s and a top plate 12t in which an opening 12t1 is partially formed.
2t covers and shields the electronic components 11a,... And the wiring pattern that require shielding, and is soldered onto the circuit board 10 in such a manner that the side plate 12s surrounds and shields the electronic components 11a,. Yes.

  As shown in FIG. 4, which is an enlarged cross-sectional view taken along the line AA in FIGS. 2 and 2, the housing reinforcing sheet metal 9 is made of, for example, a sheet metal using a stainless steel plate and has a flat plate shape. A housing case 7 is fixed and formed to reinforce 7.

The case reinforcing sheet metal 9 has a male screw on the top plate 12t of the shield frame 12 so that the opening 12t1 of the top plate 12t of the shield frame 12 is closed and the electronic components 11a,... The top plate 12t is fixed by screwing n and n.

With the above-described configuration, the electronic parts 11a,... It is shielded and shielded from the outside by a case reinforcing sheet metal 9 that closes the opening 12t1 of the plate 12t.

  According to the configuration of the first embodiment, since the conventional shield cover is not required, the number of parts can be reduced, and the space occupied by the shield cover is not required, and the mobile phone 1 can be thinned.

  Furthermore, since the case reinforcing sheet metal 9 fixed to the case 7 is screwed to the top plate 12t of the shield frame 12 that is soldered and fixed onto the circuit board 10, the case case 7 is fixed to the circuit board 10. It is integrated and the rigidity of the housing case 7 is improved.

  The mobile phone according to the second embodiment of the present invention exemplifies a case reinforcing sheet metal 29 as a modification of the case reinforcing sheet metal 9 according to the first embodiment, and is configured to directly fix the case reinforcing sheet metal 9 to the circuit board. It is.

  Since the constituent elements other than the case reinforcing sheet metal 29 are the same as those in the first embodiment, the same constituent elements are indicated by the symbol “1” (dash) in the first embodiment, and detailed description thereof is omitted.

  FIG. 6 shows a case where a cover 3 ′ of the mobile phone (mobile terminal) 1 ′ of the second embodiment shown in FIG. It is a perspective view of the main body 2 'in a state in which the mechanism portion of the multifunction key having 5', the determination key mechanism portion having the key top 6 'and the like are removed from the casing case 7' together with the key case 8 '.

  As shown in FIG. 6 and FIG. 7 of an enlarged sectional view taken along the line BB in FIG. 6, it is necessary to shield and shield the electromagnetic wave of the electronic components 11 ′,... Mounted on the circuit board 10 ′. The components 11a ′,... And the wiring pattern are covered with a side plate 12s ′ of the shield frame 12 ′ soldered onto the circuit board 10 ′, shielded from the outside and shielded, and a part of the upper part is shielded. The frame 12 'is covered with a top plate 12t' and shielded from the outside.

  Further, the housing reinforcing sheet metal (housing reinforcing member) 29 for reinforcing the housing case 7 'is manufactured using, for example, a stainless steel plate, and comes into contact with the circuit board 10' from the main body portion 29h and the main body portion 29h. The main body 29h is fixed to the housing case 7 'to reinforce the housing case 7'.

The case reinforcing sheet metal 29 fixed to the case 7 'has a main body portion 29h that closes and shields the opening 12t1' of the top plate 12t 'of the shield frame 12', and the substrate fixing portion 29e is a circuit. Soldered on the substrate 10 '.

With the above-described configuration, the electronic components 11a ',... And the wiring pattern that require shielding are shielded by being shielded from the outside by the side plate 12s' of the shield frame 12 ', and the top of the shield frame 12' is shielded above. 12t 'and the casing reinforcing sheet metal 29 which closes the opening 12t1' of the top plate 12t 'are shielded from the outside and shielded.

  According to the configuration of the second embodiment, the board fixing portion 29e of the case reinforcing sheet metal 29 is formed by bending from the main body portion 29h so as to contact the circuit board 10 ', and the bent main body portion 29h is soldered to the circuit board 10'. Since it is attached and fixed, a male screw for fixing is not necessary, and the number of parts can be reduced.

  Further, since the board fixing portion 29e formed by bending the peripheral portion of the casing reinforcing sheet metal 29 is fixed to the circuit board 10 'by soldering t, the casing reinforcing sheet metal 29 to which the casing case 7' is fixed is connected to the circuit. The casing case 7 ′ can be integrated with the circuit board 10 ′ by joining to the board 10 ′ with a large area, and the rigidity of the casing case 7 ′ can be increased.

  Further, since the conventional shield cover is not required, the number of parts can be reduced, and the space occupied by the shield cover is eliminated, and the mobile phone 1 'can be reduced in size and thickness.

    As an application example of the present invention, the mobile phone 1 has been described as an example, but the present invention can be widely used for mobile terminals other than the mobile phone 1.

The perspective view which shows the state which opened the mobile telephone of Example 1 of this invention. The perspective view which shows the main body of the state which removed the cover part of the mobile telephone of Example 1 of FIG. 1 from the hinge part, and removed the mechanism part etc. of the several numeric keypads with a key top with the case for keys. The perspective view which shows the main body which fractured | ruptured the housing | casing reinforcement sheet metal of FIG. 2 partially. FIG. 3 is an enlarged sectional view taken along line AA in FIG. 2. The perspective view which shows the state which opened the mobile telephone of Example 2 of this invention. The perspective view which shows the main body of the state which removed the cover part of the mobile telephone of Example 2 of FIG. 5 from the hinge part, and removed the mechanism part etc. of the several keypad with a key top with the case for keys. FIG. 7 is an enlarged sectional view taken along line BB in FIG. 6. The perspective view which shows the state which opened the conventional mobile telephone. The perspective view which shows the main body which removed the cover part of the conventional mobile telephone of FIG. 8 from the hinge part, and removed the mechanism part etc. of the several keypad with a keytop from the housing | casing case with the key case. FIG. 10 is an enlarged cross-sectional view taken along line CC in FIG. 9.

Explanation of symbols

1, 1 '... mobile phone (mobile terminal),
7, 7 '... housing case,
9: Housing reinforcing sheet metal (housing reinforcing member),
10, 10 '... circuit board,
11a, 11a '... electronic components,
12, 12 '... Shield frame,
12s, 12s' ... side plate of shield frame,
12t, 12t '... top plate of shield frame,
12t1, 12t1 '... Opening of top plate of shield frame,
29 ... casing reinforcing sheet metal (casing reinforcing member),
29e: a substrate fixing portion of the case reinforcing sheet metal (a substrate fixing portion of the case reinforcing member),
29h: A main body portion of the case reinforcing sheet metal (a main portion of the case reinforcing member).

Claims (2)

A circuit board on which electronic components and wiring patterns that require shielding are mounted;
A side plate that surrounds and shields the periphery of the electronic component and the wiring pattern; and a top plate that covers and shields the electronic component and the wiring pattern and has an opening formed in a part of the side plate. A shield frame fixed to the
A housing reinforcing member formed to be fixed to the housing case to reinforce the housing case, and attached to the top plate in a manner to close and shield the opening of the top plate. A mobile terminal characterized by. A circuit board on which electronic components and wiring patterns that require shielding are mounted;
A side plate that surrounds and shields the periphery of the electronic component and the wiring pattern; and a top plate that covers and shields the electronic component and the wiring pattern and has an opening formed in a part of the side plate. A shield frame fixed to the
A main body fixed to the housing case in order to reinforce the housing case, and a board fixing portion formed by bending from the main body so as to abut against the circuit board. A portable terminal comprising: a board reinforcing member, wherein the board fixing portion is soldered onto the circuit board so as to close and shield the opening of the board.

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