JP2013168890A - Portable terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable terminal which provides high flexibility in the key arrangement as well as good designability and assemblability.SOLUTION: A portable terminal 10 includes: a first communication hole 41 and a second communication hole 42 allowing the interior of a housing 11 to communicate with the exterior; a first key 35 and a second key 36 respectively protruding from the first communication hole and the second communication hole to the exterior of the housing; a key sheet 33 attached to an inner surface 11G of the housing to cover a base end part 35A of the first key and a base end 36A of the second key; a chassis 13 housed in the housing; an FPC 24 supported on a supporting surface 15A provided at the chassis; and a first key switch 26, a second key switch 27, and a third key switch 28 mounted on positions in the FPC that correspond to the first key and the second key.

Description

  The present invention relates to a portable terminal in which a key protrudes from the communication hole communicating with the inside and outside of the housing to the outside of the housing, and a key switch is provided at a position corresponding to the key inside the housing.

In the portable terminal, a casing is formed by combining an upper casing and a lower casing, and a boundary line combining the upper casing and the lower casing is formed on a side surface of the casing.
A switch (hereinafter referred to as a key) sandwiched between an upper housing and a lower housing is provided on a side surface of the housing (Patent Document 1).
As described above, in order to sandwich the key between the upper casing and the lower casing, a groove is formed in the upper casing and the lower casing, and the key is accommodated in the groove.

JP 2008-85140 A (paragraph 0014, FIG. 2)

However, in the portable terminal of Patent Document 1, since the keys are accommodated in the grooves of the upper casing and the lower casing, the location of the keys is limited to a position along the boundary line, and the design of the portable terminal is restricted. There is.
Furthermore, when the mobile terminal of Patent Document 1 is assembled with the upper housing and the lower housing, it takes time to store the key in the grooves of the upper housing and the lower housing, and the assembly of the upper housing and the lower housing is performed. The nature is bad.

In addition, in the portable terminal of Patent Document 1, when a key sheet is to be attached from the back side of the casing with a double-sided tape or the like, pressing the key sheet applies pressure in a direction in which the key sheet is peeled off from the back side of the casing, and the key sheet is There is a risk of peeling from the back of the body.
In addition, with a waterproof structure and a shape that is assembled to the housing, the packing needs to be thick, and the thickness of the assembled portion increases at the side surface, which makes it difficult to reduce the thickness.

  SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has as its purpose a portable device that has a high degree of freedom in key arrangement, a thin design that provides good design and assembly, and a waterproof property. To provide a terminal.

  The portable terminal of the present invention includes a housing, a communication hole that communicates the inside and the outside of the housing, a key that protrudes from the communication hole to the outside of the housing, an inner surface of the housing, A key sheet that covers the base end portion, a chassis that is housed in the housing, a circuit board that is supported by a support surface provided in the chassis, and a key that is mounted at a position corresponding to the key on the circuit board A switch.

A key protrudes from the communication hole of the housing to the outside of the housing, and a key switch is disposed at a position corresponding to the key. The key switch is mounted on a circuit board, and the circuit board is supported by a chassis in the casing. In this way, the key is arranged on the housing side, and the key switch is arranged on the chassis.
Therefore, when the chassis is accommodated in the housing, the key switch of the chassis can be brought into contact with the key on the housing side.
Thereby, unlike the conventional case, it is not necessary to arrange the key on the boundary line between the upper casing and the lower casing, so that the restriction on the place where the key is arranged can be relaxed.

  Further, by housing the chassis in the housing, the key switch of the chassis can be brought into contact with the key on the housing side, so that the key and the key switch can be easily assembled without taking time and effort.

The portable terminal of the present invention has a rib provided on the key sheet, and the rib abuts on a receiving surface adjacent to the support surface.
In the portable terminal of the present invention, a double-sided tape for waterproofing is adhered to the key sheet, and a waterproof key structure that matches the design of the casing is realized by forming it in an oblique direction inside the casing. To do.

The key sheet affixed to the inner surface of the housing is provided with a rib so that the rib contacts the receiving surface.
As a result, even when the key is pressed excessively, the key sheet can be prevented from being greatly separated from the inner surface of the housing by the rib (specifically, the receiving surface). It can be made difficult to peel.

  The portable terminal of the present invention includes a frame-shaped spacer that is provided on the mounting surface of the circuit board and surrounds the key switch.

Here, in order to pull out the circuit board from the support surface, a notch is required in the receiving surface adjacent to the support surface. However, if a notch is formed on the receiving surface, it is difficult to ensure the waterproofness of the circuit board and the key switch.
Therefore, a frame-like spacer is provided on the mounting surface of the circuit board so that the key switch is surrounded by the spacer. Thereby, waterproofness is securable by making a key sheet (specifically a rib) press-contact with a frame-shaped spacer.

According to the portable terminal of the present invention, the key is disposed on the housing side, the key switch is disposed on the chassis, and the chassis key switch is brought into contact with the key on the housing side when housing the chassis in the housing. .
As a result, there is no need to place a key on the boundary line between the upper and lower housings as in the past, so there are no restrictions on where to place the keys, increasing the degree of freedom of key placement, and improving the mobile terminal Design is obtained.

Further, by housing the chassis in the housing, the key switch of the chassis can be brought into contact with the key on the housing side, so that the key and the key switch can be easily assembled without taking time and effort.
Thereby, when the portable terminal is assembled, good assemblability of the key and the key switch can be obtained.

The disassembled perspective view which shows the state which looked at the portable terminal which concerns on this invention from the back side Sectional drawing which shows the principal part of the portable terminal which concerns on this invention Sectional drawing explaining the relationship between the housing | casing of FIG. 1, a 1st key, and a 2nd key The disassembled perspective view which shows the principal part of the portable terminal which concerns on this invention Part I enlarged view of FIG. Sectional drawing which shows the state which decomposed | disassembled the housing | casing and chassis of FIG. The perspective view which shows the state which looked at the housing | casing of FIG. 1 from the back surface side. Part II enlarged view of FIG.

Hereinafter, a mobile terminal according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the mobile terminal 10 includes a rectangular box-shaped housing 11, a chassis 13 accommodated from the opening 12 (see also FIG. 2) side of the housing 11, and a rear surface 13 </ b> A of the chassis 13 (see FIG. 1). And a circuit board 16 arranged along the line 2).
A camera 17 and a battery pack 18 are connected to the circuit board 16.
As shown in FIG. 2, the mobile terminal 10 includes a display device 21 disposed along the surface 13 </ b> B of the chassis 13, and a protective cover 22 superimposed on the display device 21 from the opening 12 side. .

Further, the mobile terminal 10 includes a flexible printed circuit board (circuit board) 24 supported by the chassis 13, a first key switch 26, a second key switch 27 and a third key as key switches mounted on the flexible printed circuit board 24. And a switch 28.
Hereinafter, the flexible printed circuit board is abbreviated as “FPC”. The second key switch 27 and the third key switch 28 are shown in FIG.
In addition, the mobile terminal 10 includes a frame-shaped spacer 31 provided on the mounting surface 24 </ b> A of the FPC 24, a key sheet 33 that can be pressed against the frame-shaped spacer 31, and a key sheet 33 that can be pressed on the housing 11. The first key (key) 35 and the second key (key) 36 are provided.

As shown in FIG. 1, the casing 11 is formed at a bottom 11A formed in a substantially rectangular shape, a wall 11B raised from the bottom 11A, and an end of the wall 11B opposite to the bottom 11A. And is formed in a substantially rectangular box shape as a whole.
The casing 11 is provided with a flat portion 11C at the center of the bottom portion 11A, and inclined portions 11E are provided on both side portions 11D of the flat portion 11C. An opening 38 for exposing the camera 17 is formed in the vicinity of the upper end of the flat portion 11C.
Furthermore, a first communication hole (communication hole) 41 and a second communication hole (communication hole) 42 formed in a portion 11F corresponding to the opening 38 in one inclined portion 11E are formed.

The first communication hole 41 and the second communication hole 42 are holes that communicate the interior 44 (see FIG. 2) and the exterior 45 of the housing 11.
A first key 35 protrudes from the first communication hole 41 to the outside of the housing 11.
As an example, the first key 35 is a key for a main switch that can be switched on and off.
As shown in FIG. 2, the first key 35 includes a flange portion 35 </ b> B protruding from the vicinity of the base end portion 35 </ b> A and an operation portion 35 </ b> C protruding outside the housing 11.
In a state where the flange portion 35B is in contact with the inner surface 11G of the housing 11, the operation portion 35C protrudes outside the housing 11 through the first communication hole 41.

A second key 36 protrudes from the second communication hole 42 to the outside of the housing 11.
The second key 36 shown in FIG. 1 is, for example, a seesaw type key that can adjust the zoom and sound volume of the camera 17 (see FIG. 1).
As shown in FIG. 3, the second key 36 includes a flange portion 36 </ b> B protruding from the vicinity of the base end portion 36 </ b> A and an operation portion 36 </ b> C protruding outside the housing 11.
Although not shown, the second key 36 is similar to the first key 35 in a state where the collar portion 36B is in contact with the inner surface 11G of the housing 11 and the operation portion 36C passes through the second communication hole 42 and the housing 11. Protrudes outside.

Here, in a state where the first key 35 and the second key 36 are projected to the outside of the housing 11, the operation portion 35C of the first key 35 is positioned at a position lower than the operation portion 36C of the second key 36 by the H dimension. To do.
As a result, the first key 35 (that is, the main switch key) is prevented from being inadvertently operated, and the power supply is unlikely to be turned on unexpectedly.

As shown in FIG. 2, the base end portion 35 </ b> A of the first key 35 and the base end portion 36 </ b> A (see FIG. 5) of the second key 36 are covered with the key sheet 33.
As shown in FIGS. 4 and 5, the key sheet 33 is formed in a substantially rectangular shape so as to cover the base end portion 35 </ b> A of the first key 35 and the base end portion 36 </ b> A of the second key 36. 11G (see FIG. 2) is attached with a frame-like double-sided tape 47.
The double-sided tape 47 is formed in a frame shape along the outer periphery of the key sheet 33 so that only the outer periphery of the key sheet 33 is attached to the inner surface 11G of the housing 11.

  The key sheet 33 protects the sheet main body 51, a sheet main body 51 that can face the first key switch 26, the second key switch 27, and the third key switch 28, a reinforcing frame-shaped member 52 that reinforces the sheet main body 51, and the sheet main body 51. And a protective sheet 53.

The sheet body 51 is formed in a substantially rectangular shape, the front surface 51A is opposed to the first key 35 and the second key 36, and the back surface 51B is opposed to the first key switch 26, the second key switch 27 and the third key switch 28. Has been.
As shown in FIGS. 5 and 6, a stepped portion 54 is formed on the surface 51 </ b> A of the sheet main body 51 so as to be higher toward the first key 35 and the second key 36.
By providing the frame-shaped reinforcing frame-shaped member 52 around the stepped portion 54, the sheet main body 51 is reinforced by the reinforcing frame-shaped member 52.
Further, by providing the frame-shaped reinforcing frame-shaped member 52 around the stepped portion 54, the stepped portion 54 and the frame-shaped reinforcing frame-shaped member 52 are flush with each other, and the stepped portion 54 is flush with the stepped portion 54. The protective frame 53 is covered with the reinforcing frame member 52.

The protective sheet 53 is affixed to the inner surface 11G of the housing 11 with a frame-shaped double-sided tape 47. A frame-like spacer 31 is attached to the FPC 24 provided on the support surface 15A of the chassis 13 with a double-sided tape 67 so as to surround the first key switch 26, the second key switch 27, and the third key switch 28. It has been.
When the chassis 13 is attached to the housing 11, the spacer 31 presses the frame-like double-sided tape 47 through the sheet main body 51, thereby causing the first key 35 and the second key 36 to move to the inner surface 11 </ b> G of the housing 11. Even when the first key 35 and the second key 36 are pressed, even if the first key 35 and the second key 36 are pressed, it is difficult to peel off and a waterproof effect is obtained.
The spacer 31 may be provided on the sheet body 51 side.

As shown in FIGS. 7 and 8, the back surface 51 </ b> B of the sheet main body 51 has the first convex portion 56, the second convex portion 57, the third convex portion 58, the first convex portion 56, and the second convex portion. An outer frame rib (rib) 61 covering 57 and the third convex portion 58 and an intermediate rib (rib) 62 provided in the outer frame rib 61 are formed.
The first convex portion 56 is provided at a position corresponding to the first key switch 26 (see FIG. 5), and the second convex portion 57 is provided at a position corresponding to the second key switch 27 (see FIG. 5). The third convex portion 58 is provided at a position corresponding to the third key switch 28 (see FIG. 5).

The outer frame rib 61 is formed in a substantially rectangular frame shape along the outer frame of the sheet main body 51 on the back surface 51B of the sheet main body 51, so that the first convex portion 56, the second convex portion 57, and the third convex portion are formed. It is provided so as to surround the portion 58.
The outer frame rib 61 includes a first outer frame rib 61A provided along the wall portion 11B of the housing 11, a second outer frame rib 61B provided along the flat portion 11C of the housing 11, A first outer frame rib 61A and a third outer frame rib 61C provided across the second outer frame rib 61B.

Slits 64 are provided at predetermined intervals in the first outer frame rib 61A and the second outer frame rib 61B.
By providing a slit 64 in the first outer frame rib 61A and the second outer frame rib 61B, when the key sheet 33 is pressed with the first key 35 and the second key 36, the first outer frame rib 61A and the second outer frame rib 61A. The frame rib 61B can be suitably deformed.

  The intermediate rib 62 is disposed between the first convex portion 56 and the second convex portion 57, and is disposed between the second convex portion 57 and the third convex portion 58.

As shown in FIGS. 4 and 5, the first key switch 26, the second key switch 27, and the third key switch 28 are provided in the chassis 13.
As shown in FIG. 6, the chassis 13 is housed in the interior 44 of the housing 11 from the opening 12 side of the housing 11, and includes a sheet metal portion 14 and a resin portion 15 that is integrally molded with the sheet metal portion 14. I have.

  The resin portion 15 includes a support surface 15A for supporting the FPC 24, a support surface step portion 15B provided adjacent to the support surface 15A, a receiving surface 15C adjacent to the support surface step portion 15B, and a notch for pulling out the FPC 24. 15D (see FIG. 5).

The support surface 15 </ b> A is formed in an inclined shape so as to follow the one inclined portion 11 </ b> E of the housing 11.
The support surface step portion 15B is formed to be flush with the FPC 24 provided on one inclined portion 11E.
The receiving surface 15C is a surface adjacent to the support surface 15A, and is formed to be flush with the spacer 31 provided on the support surface step portion 15B.
The receiving surface 15C is disposed at a position corresponding to the outer frame rib 61 (first outer frame rib 61A) of the key sheet 33.

The FPC 24 is supported on the support surface 15 </ b> A via a double-sided tape 66. The FPC 24 is drawn from the support surface 15A to the outside of the support surface 15A through the notch 15D (see FIG. 5) of the resin portion 15.
Further, as shown in FIG. 5, the first key switch 26, the second key switch 27, and the third key switch 28 are mounted on the mounting surface 24 </ b> A of the FPC 24.
The first key switch 26 is disposed at a position corresponding to the first key 35. The second key switch 27 and the third key switch 28 are arranged at positions corresponding to the second key 36.

As shown in FIG. 6, a frame-like spacer 31 is provided on the mounting surface 24 </ b> A of the FPC 24 via a double-sided tape 67.
As shown in FIG. 5, the frame-shaped spacer 31 includes a frame-shaped outer frame spacer 71 formed so as to surround the first key switch 26, the second key switch 27, and the third key switch 28, and an outer frame spacer. 71 and an intermediate spacer 72 provided at a predetermined interval.

A first space 73, a second space 74, and a third space 75 are formed by the frame-shaped spacer 31. The first key switch 26 is accommodated in the first space 73, and the second key switch 27 is accommodated in the second space 74. The third key switch 28 is accommodated in the third space 75.
Further, by providing a frame-shaped spacer 31 on the mounting surface 24A of the FPC 24 via a double-sided tape 67, the notch 15D of the resin portion 15 is covered with the frame-shaped spacer 31 (specifically, the outer frame spacer 71). Can do.

The outer frame spacer 71 is disposed at a position corresponding to the outer frame rib 61 (see FIG. 8) of the key sheet 33.
The intermediate spacer 72 is disposed at a position corresponding to the intermediate rib 62 (see FIG. 8) of the key sheet 33.

As described above, as shown in FIG. 3, the first key 35 protrudes from the first communication hole 41 of the housing 11 to the outside of the housing 11, and the housing 11 from the second communication hole 42 of the housing 11. The second key 36 is protruded outside.
Further, as shown in FIG. 5, the first key switch 26, the second key switch 27, and the third key switch 28 are arranged at positions corresponding to the first key 35 and the second key 36.

The first key switch 26, the second key switch 27, and the third key switch 28 are mounted on the FPC 24, and the FPC 24 is supported by the chassis 13 in the housing 11.
Thus, the first key 35 and the second key 36 are arranged on the housing 11 side, and the first key switch 26, the second key switch 27, and the third key switch 28 are arranged on the chassis 13.

Therefore, when housing the chassis 13 in the housing 11, the first key switch 26, the second key switch 27 and the third key switch 28 of the chassis 13 are used as the first key 35 and the second key 36 on the housing 11 side. Can be contacted.
Thereby, unlike the prior art, it is not necessary to arrange the first key 35 and the second key 36 on the boundary line between the upper casing and the lower casing.
Therefore, there is no restriction on the location where the first key 35 and the second key 36 are arranged, the degree of freedom of the arrangement of the first key 35 and the second key 36 is increased, and a good design of the mobile terminal 10 can be obtained.

Thus, by housing the chassis 13 in the housing 11, the first key switch 26, the second key switch 27, and the third key switch 28 of the chassis 13 are replaced with the first key 35 and the second key on the housing 11 side. 36 can be contacted.
As a result, the first key switch 26, the second key switch 27, the third key switch 28, the first key 35, and the second key 36 can be easily assembled without trouble, so that the portable terminal 10 can be satisfactorily assembled. Assemblability is obtained.

Further, as shown in FIG. 2, the outer frame rib 61 (first outer frame rib 61A, second outer frame rib 61B) can contact the receiving surface 15C and the spacer 31 (specifically, the outer frame spacer 71). Is provided.
Therefore, even when the first key 35 and the second key 36 are excessively pressed into the housing 11, the receiving surface 15 </ b> C and the outer frame spacer 71 prevent the key sheet 33 from being greatly separated from the inner surface 11 </ b> G of the housing 11. be able to.
Thereby, even when the 1st key 35 and the 2nd key 36 are pushed excessively, it can make it difficult to peel the key sheet 33 from the inner surface 11G of the housing | casing 11. FIG.

Further, as shown in FIG. 5, a frame-like spacer 31 is provided on the mounting surface 24 </ b> A of the FPC 24 so that the first key switch 26, the second key switch 27, and the third key switch 28 are surrounded by the spacer 31.
Further, the notch 15D of the resin portion 15 is covered with a frame-shaped spacer 31 (specifically, the outer frame spacer 71).
In addition, the outer frame spacer 71 is disposed at a position corresponding to the outer frame rib 61 (see FIG. 8), and the intermediate spacer 72 is disposed at a position corresponding to the intermediate rib 62 (see FIG. 8).
As a result, as shown in FIG. 2, the outer frame rib 61 and the intermediate rib 62 are pressed against the frame-shaped spacer 31 to ensure waterproofness.

Note that the mobile terminal according to the present invention is not limited to the above-described embodiment, and can be appropriately changed and improved.
For example, in the above-described embodiment, the example in which the present invention is applied to the mobile terminal 10 has been described. However, the present invention is not limited thereto, and the present invention can be applied to other electronic devices.

  Moreover, in the said embodiment, although the flexible printed circuit board (circuit board) 24 was illustrated as a circuit board, it is not limited to this, It is also possible to apply a normal circuit board.

  Further, in the above embodiment, the first key switch 26, the second key switch 27, and the third key switch 28 are illustrated as key switches, and the first key 35 and the second key 36 are illustrated as keys. The number of keys can be arbitrarily selected.

  In addition, the portable terminal, casing, chassis, FPC, first key switch, second key switch, third key switch, spacer, key sheet, first key, second key, and first communication hole used in the embodiment. The shapes and configurations of the second communication hole, the outer frame rib, the intermediate rib, and the like are not limited to those illustrated, and can be appropriately changed.

  The present invention is applied to a portable terminal in which the inside and outside of a housing are communicated with a communication hole, a key protrudes from the communication hole to the outside of the housing, and a key switch is provided inside the housing so as to correspond to the key. It is suitable for.

DESCRIPTION OF SYMBOLS 10 Portable terminal 11 Housing | casing 11G Inner surface 13 Chassis 15A Support surface 15C Receiving surface 24 FPC (flexible printed circuit board: circuit board)
24A Mounting surface 26 1st key switch (key switch)
27 Second key switch (key switch)
28 3rd key switch (key switch)
31 Spacer 33 Key sheet 35 First key (key)
35A Base end of first key 36 Second key (key)
36A Base end portion of second key 41 First communication hole (communication hole)
42 2nd communication hole (communication hole)
44 Inside of the housing 45 Outside of the housing 61 Outer frame rib (rib)
62 Intermediate rib (rib)

Claims (3)

A housing,
A communication hole communicating the inside and outside of the housing;
A key protruding from the communication hole to the outside of the housing;
A key sheet affixed to the inner surface of the housing and covering the base end of the key;
A chassis housed in the housing;
A circuit board supported by a support surface provided in the chassis;
And a key switch mounted at a position corresponding to the key on the circuit board. The mobile terminal according to claim 1,
Having a rib provided on the key sheet;
A portable terminal in which the rib abuts against a receiving surface adjacent to the support surface. In the portable terminal according to claim 1 or 2,
A portable terminal having a frame-shaped spacer provided on a mounting surface of the circuit board and surrounding the key switch.

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