JP5094917B2 - Mobile device - Google Patents

Description

  The present invention relates to a mobile terminal such as a mobile phone or a PDA (Personal Digital Assistant).

  Conventionally, there is a portable terminal in which an operation unit (input device) and a circuit board are accommodated in a housing (see, for example, Patent Document 1).

JP 2001-283680 A (FIG. 4, paragraph number 0031)

The portable terminal described in Patent Document 1 described above is incorporated into the housing after the operation unit and the circuit board are electrically connected in advance.
By the way, in such a conventional portable terminal, the operation unit and the circuit board can be efficiently assembled unless the assembly is performed from one direction in which the assembly method is performed so as to be sandwiched between the upper cover and the lower cover. I can't.
In addition, if it is attempted to make electrical connection between the operation unit and the circuit board after being incorporated in the housing, a space for electrical connection work must be provided in the housing, and this space reduces the size of the housing. And thinning becomes difficult.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a mobile terminal capable of improving productivity by extremely easily connecting an operation unit and a circuit board.

A portable terminal according to the present invention includes a housing, a sheet metal member supported by the housing, a first circuit board disposed between the housing and the sheet metal member, and the first of the sheet metal members. A second circuit board disposed on the opposite side of the circuit board; a through hole disposed in the sheet metal member; and a first circuit board disposed on the first circuit board and exposed to the second circuit board side from the through hole. comprising first connector and is disposed on the second circuit board, a second connector connected to the first connector through the through hole, and a key sheet arranged outside the said second circuit board, wherein The housing has a frame-shaped side portion and a bottom portion that covers one end side of the side portion, the side portion and the bottom portion are integrally molded, and the sheet metal member is fitted to the side portion. The sheet metal member is formed at the upper end portion of the side portion of the casing by the claw portion. A second circuit board is fitted to a fitting portion arranged at a predetermined waterproof holding distance on the inner side, and the key sheet is placed on the upper surface of the edge surface portion with respect to the inside of the housing. Has a waterproof property, and the sheet metal member has circuit board abutting pieces on both sides of the claw portion, and the circuit board abutting piece functions as a reinforcing column and serves as a whole of the sheet metal member. Similar to the claw portion, it has an elastic contact portion that protrudes downward from both edge portions of the sheet metal member main body and is formed in a U-shape at the front end portion thereof, as in the case of the circuit. When the sheet metal member is assembled to the side portion of the housing by the claw portion, the substrate contact piece is configured such that the elastic contact portion contacts the upper surface of the first circuit board to place the sheet metal member in the housing. It supports to.

In the present invention, the first circuit board and the second connector of the second circuit board are electrically connected to each other through the through hole by overlapping the second circuit board on the first circuit board with the sheet metal member interposed therebetween. Connected.
Therefore, in the present invention, the electrical connection is completed by stacking the second circuit board and the first circuit board included in the operation unit, and further, the assembly work can be performed very easily by stacking the key sheets. Can do.

  In the present invention, the casing is a bathtub-shaped integral structure having a frame-shaped side portion and a bottom portion, and the sheet metal member and the second circuit board are assembled in the stacking direction and then easily assembled into the integral-structured casing. Can do.

According to the portable terminal of the present invention, the second circuit board is stacked on the first circuit board with the sheet metal member interposed therebetween, so that the first connector of the first circuit board and the second connector of the second circuit board pass through. It is electrically connected through the hole.
Thereby, according to the portable terminal of this invention, there exists an effect that a connection with an operation part and a circuit board can be performed very easily, and productivity can be improved.

1 is an exploded perspective view of a mobile terminal according to an embodiment of the present invention. 1 is an exploded perspective view illustrating a connection relationship between a first circuit board and a second circuit board in the portable terminal of FIG. 1 is a longitudinal sectional view of the portable terminal of FIG. 2 is an enlarged cross-sectional view of the main part of FIG. FIG. 1 is an external perspective view of the portable terminal of FIG. Side view of the portable terminal of FIG. FIG. 1 is an external perspective view around a fitting portion of a sheet metal member in the portable terminal of FIG. 1 is a longitudinal section around a sheet metal member of the portable terminal of FIG. The principal part expanded sectional view of the portable terminal of FIG. (A), (B), (C) is each a top view explaining the attachment procedure of the sheet-metal member in the portable terminal of FIG. (A), (B), (C), (D) is a sectional view and a perspective view, respectively, for explaining the procedure for removing the sheet metal member in the portable terminal of FIG.

Hereinafter, a mobile terminal according to an embodiment of the present invention will be described with reference to the drawings.
A mobile terminal 10 according to an embodiment of the present invention includes a lower casing 11 provided with an operation unit 12, an upper casing 13 provided with a display unit 14, and the lower casing 11 and the upper casing 13 folded. It is a foldable portable terminal provided with a connecting portion 15 that is freely connected.

  In addition, although the portable terminal 10 illustrates a foldable portable terminal as an electronic device, the portable terminal 10 is not limited to a foldable portable terminal, and can be applied to a straight portable terminal.

  As shown in FIGS. 1 and 2, the lower housing 11 integrally includes a frame-shaped side portion 16 and a bottom portion 17 that covers one end portion in the penetrating direction of the side portion 16. An electronic component housing portion 21 for housing the sheet metal member 18, the first circuit board 19, and the second circuit board 20 is formed. The display unit 14 of the upper housing 13 is, for example, a liquid crystal display device. On the first circuit board 19, a plurality of electronic components 22 forming a central function of the mobile terminal 10 are mounted.

  The lower housing 11 is provided with a plurality of ribs 24 having an interval dimension into which a claw portion (see FIG. 3) 23 of the sheet metal member 18 enters on both inner surfaces (inner sides) of the side portion 16 near the connecting portion. 17 includes a battery mounting portion 26 to which the battery pack 25 can be freely attached and detached, and a battery cover 27 for closing the battery mounting portion 26. The lower casing 11 includes an external connector cover 28 that is detachably attached to a part of the side portion 16, and includes a cable connection member 29 and a cable connection member cover 30.

The sheet metal member 18 is provided on the other end side in the penetrating direction of the side portion 16 with respect to the first circuit board 19, and a substrate sheet (not shown) and a panel switch 31 are disposed on the upper surface thereof. A second circuit board 32 that constitutes the input operation unit 20 is placed on the upper surface of the sheet metal member 18, and a key sheet 33 that also constitutes the input operation part 20 is placed on the second circuit board 32. The
When the key sheet 33 is touched by an operator's finger operating the mobile terminal 10, a predetermined panel switch 31 of the second circuit board 32 on the lower side is pressed.

  The sheet metal member 18 is provided with a rectangular through-hole 35 on the upper surface of a portion near the connecting portion 15 in the length direction of the sheet metal member main body 34 having a metal plate shape. Since the through-hole 35 has a stepped portion around the through-hole 35, when the key sheet 33 is mounted on the sheet metal member 18, the key sheet 33 does not protrude, that is, the key sheet 33 does not float. The through hole 35 is provided on the upper surface side portion of the first circuit board 19 on the connecting portion 15 side by sequentially stacking the second circuit board 32 with the sheet metal member 18 interposed therebetween. The first connector 36 and the second connector 37 provided on the lower surface side portion of the second circuit board 32 on the connecting portion 15 side can pass therethrough. Therefore, the connectors 36 and 37 are electrically connected through the through-hole 35 by incorporation in the direction in which the second circuit board 32 overlaps the first circuit board 19. Thereby, it is not necessary to perform work such as electrical connection of electric wires, and simple assembly from the same assembly direction can be realized.

  The sheet metal member 18 has a latch piece 38 on the opposite side of the connecting portion 15 in the length direction. The latching piece 38 protrudes in the length direction of the sheet metal member 18, and functions as a fulcrum by first latching on the back surface of the side portion 16 when the sheet metal member 18 is attached to the lower casing 11. The sheet metal member 18 is fixed to the first circuit board 19 with screws 39.

As shown in FIG. 3, the sheet metal member 18 has a plurality of claw portions 23 in the form of flexible fitting pieces on both side edges. Therefore, the sheet metal member 18 presses and inserts the plurality of claw portions 23 from the upper side of the lower housing 11 toward the inside of the side portion 16, so that the plurality of claw portions 23 become the inner surface of the side portion 16 of the lower housing 11. Is fitted into the fitting portion 40.
That is, the sheet metal member 18 is held on the opposite side of the portion of the lower housing 11 where the key sheet 33 is fixed.

  Here, the engagement of the claw portion 23 is not a state in which the claw portion 23 is simply in contact with the side portion 16 of the lower housing 11, but on the side where the sheet metal member 18 is disposed inside the lower housing 11. After one or both of the edge portions of the portion 16 or the sheet metal member 18 are elastically deformed, the relative positions are fixed by returning to the initial shape.

  As shown in FIG. 4, more specifically, the sheet metal member 18 has a predetermined waterproofing inside the edge surface portion 41 formed at the upper end portion of the side portion 16 of the lower housing 11 by the claw portion 23. It fits into the fitting part 40 arrange | positioned with the working distance L1 opened. Since the key sheet 33 is placed on the upper surface of the edge surface portion 41, the second circuit board 32 exhibits high waterproofness with respect to the inside of the lower casing 11.

  When the claw portion 23 is fitted to the fitting portion 40 provided on the inner surface of the side portion 16 of the lower housing 11, the claw portion 23 enters between the ribs 24 provided on both side surfaces of the side portion 16 of the lower housing 11. When the claw portion 23 enters between the ribs 24, the sheet metal member 18 is positioned on the lower housing 11 so as not to move in the length direction.

  As shown in FIGS. 5, 6, and 7, a plurality of claw portions 23 are formed at both edge portions in the substantially central portion of the sheet metal member main body 34 of the sheet metal member 18, and downward from both edge portions. It is protruding. These claw portions 23 are arranged at predetermined intervals in the longitudinal direction of the sheet metal member main body 34. Therefore, when assembling the sheet metal member 18 to the side portion 16 of the lower casing 11, the plurality of claw portions 23 having a predetermined interval are provided even if the sheet metal member 18 is bent in the length direction. Easy to put in. Note that the claw portions 23 are not limited to being formed on both edge portions of the central portion of the sheet metal member main body 34, but may be a plurality of two or more other than four.

  As shown in FIGS. 8 and 9, the sheet metal member 18 has a plurality of circuit board contact pieces 42 on both sides of the plurality of claw portions 23. The circuit board abutting piece 42 functions as a support column to increase the overall rigidity of the sheet metal member 18 and projects downward from both edge portions of the sheet metal member main body 34 in the same manner as the claw portion 23. And has an elastic contact portion 43 formed in a U shape at the tip. When the sheet metal member 18 is assembled to the side portion 16 of the lower casing 11 by the claw portion 23, the circuit board contact piece 42 contacts the upper surface of the first circuit board 19 when the sheet metal member 18 is assembled to the side portion 16 of the lower casing 11. 18 is supported in the lower housing 11.

Next, a procedure for attaching the sheet metal member 18 to the lower casing 11 will be described.
As shown in FIG. 10A, the sheet metal member 18 is disposed above the electronic component housing portion 21 of the lower casing 11. Next, as shown in FIG. 10B, the latching piece 38 of the sheet metal member 18 is first latched on the back surface of the side portion 16, and the sheet metal member 18 is pressed toward the electronic component housing portion 21. Then, as shown in FIG. 10C, the sheet metal member 18 is advanced toward the electronic component housing portion 21 while being bent with the latching piece 38 as a fulcrum, and the side portion from the claw portion 23 on the latching piece 38 side. 16 are sequentially fitted into the fitting portions 40 on the inner surface of the 16. At this time, since the claw portion 23 has a predetermined interval in the length direction of the sheet metal member 18, the claw portion 23 easily enters the side portion 16 of the lower casing 11.

Next, a procedure for removing the sheet metal member 18 from the lower casing 11 will be described.
As shown in FIG. 11A, first, the upper portion of the claw portion 23 of the sheet metal member 18 is pressed by the jig 50 or the like. Then, as shown to FIG. 11 (B) and FIG.11 (C), the edge part of the sheet-metal member 18 bends below. The claw portion 23 is detached from the fitting portion 40 when the end portion of the sheet metal member 18 bends downward. Then, as shown in FIG. 11D, the sheet metal member 18 is detached from the electronic component housing portion 21 and removed from the lower housing 11 with the latching piece 38 as a fulcrum as in the case of attachment.

Therefore, in the portable terminal 10 of this embodiment, the second connector 20 and the second circuit of the first circuit board 19 are overlapped with the second circuit board 20 with the sheet metal member 18 sandwiched on the first circuit board 19. The second connector 37 of the substrate 20 is electrically connected through the through hole 35.
Thereby, in the portable terminal 10 of this one embodiment, the connection between the second circuit board 20 and the first circuit board 19 included in the operation unit 12 is extremely achieved by assembling the circuit boards 20 and 19 in the stacking direction. It can be done easily.

In the mobile terminal 10 of this embodiment, the second circuit board 20 is assembled between the sheet metal member 18 and the key sheet 33 by assembling in the direction in which the key sheet 33 is stacked on the second circuit board 20. Can be attached.
Thereby, in the portable terminal 10 of this embodiment, the second circuit board 20 and the key sheet 33 can be assembled from the same direction as when the sheet metal members 18 are stacked on the first circuit board 19.

In the portable terminal 10 of this embodiment, the lower casing 11 has a bathtub-shaped integrated structure having the side portion 16 and the bottom portion 17, and is assembled in a direction in which the sheet metal member 18 and the second circuit board 20 are stacked. After being attached, it is assembled into the lower casing 11 of an integral structure.
Thereby, in the portable terminal 10 of this embodiment, the sheet metal member 18 and the second circuit board are arranged in the same direction as the conventional assembly method in which the operation unit and the circuit board are sandwiched between the upper cover and the lower cover. 20 can be assembled to the lower casing 11 of an integral structure.

  In addition, the operation part, display part, connection part, etc. which were used in the said embodiment are not limited to what was illustrated, and can be changed suitably.

  As described above, the portable terminal according to the present invention can be connected to the operation unit and the circuit board very easily to improve the productivity. Therefore, the portable terminal can be applied to various electronic devices other than the cellular phone and the PDA. can do.

10 Mobile terminal 11 Lower casing (housing)
16 side portion 17 bottom portion 18 sheet metal member 19 first circuit board 32 second circuit board 33 key sheet 35 through hole 36 first connector 37 second connector 33 key sheet

Claims (1)

A housing,
A sheet metal member supported by the housing;
A first circuit board disposed between the housing and the sheet metal member;
A second circuit board disposed on the opposite side of the sheet metal member from the first circuit board;
A through hole disposed in the sheet metal member;
A first connector disposed on the first circuit board and exposed from the through hole toward the second circuit board;
A second connector disposed on the second circuit board and connected to the first connector through the through hole;
A key sheet disposed outside the second circuit board ,
The housing includes a frame-shaped side portion and a bottom portion that covers one end side of the side portion,
The side part and the bottom part are integrally molded, and the sheet metal member is fitted to the side part. At this time, the sheet metal member is formed at the upper end of the side part of the casing by a claw part. The key sheet is placed on the upper surface of the edge surface portion so as to be second with respect to the inside of the housing. The fitting portion is disposed inside the surface portion with a predetermined waterproof holding distance. The circuit board is waterproof, and the sheet metal member has circuit board abutting pieces on both sides of the claw portion, and the circuit board abutting piece functions as a support column for reinforcement. It is intended to increase the overall rigidity, and has an elastic contact portion that protrudes downward from both edge portions of the sheet metal member body in the same manner as the claw portion, and is formed in a U shape at the tip portion thereof, When the sheet metal member is assembled to the side portion of the housing by the claw portion, the circuit board contact piece is Mobile terminal you support the sheet metal member within the housing abutting portion abuts against the upper surface of the first circuit board.

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