JP2013101874A - Portable terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable terminal capable of ensuring operability by using a large key top, reducing a size of a housing by reducing an inner mounting area, and suppressing variation in an operation load.SOLUTION: A pusher 52 is eccentrically arranged with respect to the center of a planar contour shape of each key top 511. Supporting legs 53 and 55 are arranged at positions opposite to the eccentric direction in which the pusher 52 is arranged, with respect to the center of the planar contour shape of the key top 511. In such a structure, when the center of the key top 511 is pressed with a finger, a load is dispersed to the pusher 52 and the supporting legs 53 and 55 they are both sides of the center of the key top 511, and, therefore, the center of the key top 511 and the center of the pusher 52 move as if they are identical. Thus, operability is ensured by using the large key top, a size of a housing 11 can be reduced, and variation in an operation load can be suppressed.

Description

  The present invention relates to a portable terminal having a plurality of push button type key members.

Conventionally, a portable terminal having a plurality of push button type key members is known (see, for example, Patent Document 1).
As shown in FIG. 7, in the portable terminal 100 described in Patent Document 1, an illuminated key sheet 101 is used, and includes a base sheet 102 made of a translucent rubber-like elastic body.
A plurality (three in this case) of key tops 103 are projected in a columnar shape on the operation surface side of the base sheet 102.
A rectangular shading opening 104 is formed between adjacent key tops 103 so as to penetrate therethrough. The light-shielding opening 104 does not cause “spanning illumination” in which even the adjacent key tops 103 not to be illuminated appear to be illuminated by illumination of the key tops 103 to be illuminated. Is formed to do.
In addition, in order to ensure the handleability at the time of assembly etc., the outer edge connection part 105 which is a connection part of adjacent keytops 103 is provided.

On the back surface of the base sheet 102, a pusher 106 is formed in a columnar shape for each key top 103. The pusher 106 is a part that presses the contact switch of the board. Next to each pusher 106, a cylindrical light incident protrusion 107 having a projection length shorter than that of the pusher 106 is formed. The tip surface of the light incident projection 107 faces a light source (not shown) mounted on the substrate.
Thereby, only a specific key top 103 among a plurality of key tops 103 can be illuminated with high luminance.

JP 2006-338972 A (FIG. 1)

However, when the three key tops 103 are arranged like the portable terminal 100 as described above, it is desirable to increase the key top 103 from the viewpoint of operability. In this case, from the viewpoint of downsizing the portable terminal 100 and upsizing the display unit, the occupied area of the internal structure related to the key is limited.
For this reason, as shown in FIG. 8A, in the left and right keys of the triple key, the center position P1 of the pusher 106 provided on the key top 103 and pressing the switch is shifted from the center position P2 of the key top 103. At the same time, a support leg 108 may be provided.
In this case, as shown in FIG. 8B, the support leg 108 serves as a fulcrum, the center position P2 of the key top 103 pressed by the finger F serves as a power point, and the pusher 106 that presses the switch serves as an action point. A load greater than the central key that applies force directly to 106 is required.
In addition, there is a problem that a sense that the key top 103 rotates and falls is generated, resulting in variations in operational feeling.

  The present invention has been made to solve the conventional problems, and employs a large key top to ensure operability and reduce the internal mounting area to enable downsizing of the housing, thereby reducing the operating load. An object is to provide a portable terminal capable of suppressing variations.

  The portable terminal of the present invention includes a housing, an opening provided in the housing, a circuit board accommodated in the housing, a contact provided in the opening and provided on the surface of the circuit board. A key member that presses the contacts, and the key member is provided on the circuit board side of the key body, the key body having a substantially rectangular key top exposed from the opening, and the presser pressing the contact And a support leg provided on the circuit board side of the key body and capable of coming into contact with a portion other than the contact in the circuit board, and the center with respect to the center of the planar contour shape of the key top The pusher is provided at an eccentric position, and the support leg is provided at a position opposite to the eccentric direction of the pusher with respect to the center of the planar contour shape of the key top. is there.

  In addition, the portable terminal of the present invention is provided on the surface of the circuit board while being accommodated in the casing, the opening provided in the casing, the circuit board accommodated in the casing, and the opening. A key member that presses the contact, and the key member is provided on a side of the circuit board in the key body, the key body having a substantially rectangular key top exposed from the opening, and pressing the contact. A pusher and a support leg provided on the circuit board side of the key body and capable of contacting a portion other than the contact on the circuit board, and with respect to the center of the planar contour shape of the key top In a position parallel to the first side direction of the key top and decentered in a direction along the second side intersecting the first side with respect to the tangent to the pusher. It is provided.

  In the present invention, the pusher is provided at a position eccentric with respect to the center of the planar contour shape of the key top, and the support leg is opposite to the eccentric direction of the pusher with respect to the center of the planar contour shape of the key top. Since it is provided at the position on the side, the large key top is used to ensure operability and the internal mounting area is reduced, enabling the miniaturization of the housing and suppressing variations in operating load. A portable terminal can be provided.

The perspective view which shows the state which looked at the portable terminal which concerns on this invention from the surface side Sectional view at II-II position in FIG. An exploded perspective view of the rear end of the mobile terminal FIG. 1 is a plan view of the rear end portion of the mobile terminal viewed from the IV direction (A) is the perspective view which looked at the key cover which shows arrangement | positioning of a support leg part from the downward direction, (B) is a bottom view of a key cover. Sectional view at VI-VI position in FIG. A plan view showing a main part of a conventional portable terminal (A) is sectional drawing which shows the problem of the conventional portable terminal, (B) is explanatory drawing.

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 according to the embodiment of the present invention includes a housing 11, a battery pack 15 accommodated in the housing 11, a first circuit board 16 adjacent to the battery pack 15, and And a second circuit board (circuit board) 17.

As shown in FIG. 2, the mobile terminal 10 includes a vibrator 21, an antenna 22, and a microphone 23 connected to the back surface 171 of the second circuit board 17.
The vibrator 21 is connected to the back surface 171 of the second circuit board 17 via the first spring contact 25.
The antenna is connected to the back surface 171 of the second circuit board 17 via the second spring contact 26.

Furthermore, the mobile terminal 10 includes a plurality of keys (key members) 50 disposed on the front side of the second circuit board 17 via a plurality of contacts, a dome 28 and a plurality of pushers 52.
The plurality of pushers 52 are formed integrally with a flexible sheet 54.

As shown in FIG. 3, the housing 11 is formed in a substantially rectangular shape by attaching a cover 13 to the case 12.
A cover 13 is provided on the front side of the first circuit board 16 and the second circuit board 17 (see FIG. 1).

The display unit 33 is provided on the surface 131 of the cover 13 (that is, the surface of the housing 11), the reception unit 34 (see FIG. 1) is provided on the upper part of the display unit 33, and is directly adjacent to the lower part of the display unit 33. A hole 35 is provided.
A microphone 23 is provided below the direct hole 35. The direct through hole 35 is provided on the left side of the plurality of keys 50.

As shown in FIGS. 1 and 2, in the case 12, a battery accommodating portion 37 is provided in a concave shape on the back side of the display portion 33. A battery pack 15 having a substantially rectangular shape is accommodated in the battery accommodating portion 37.
A substantially rectangular first circuit board 16 is arranged at a position adjacent to the upper side of the battery pack 15. By providing the battery cover 39 in the battery storage part 37, the battery storage part 37 and the battery pack 15 are covered with the battery cover 39.

The first circuit board 16 is housed inside the housing 11 and is disposed between the battery pack 15 and the receiving unit 34 and on the back side of the display unit 33.
A substantially rectangular second circuit board 17 is disposed at a position adjacent to the battery pack 15 and opposite to the first circuit board 16.
The second circuit board 17 is housed inside the housing 11 and is disposed adjacent to the lower side of the battery pack 15 and the display unit 33.

Vibrator 21 and antenna 22 are connected to the back side of second circuit board 17 via first spring contact 25 and second spring contact 26, respectively.
That is, the vibrator 21 is provided on the back surface 171 of the second circuit board 17, and the vibrator 21 is connected to the back surface 171 of the second circuit board 17 via the first spring contact 25.
The antenna 22 is provided on the back surface 171 side of the second circuit board 17, and the antenna 22 is connected to the back surface 171 of the second circuit board 17 via the second spring contact 26.
Furthermore, the microphone 23 is connected to the back surface 171 of the second circuit board 17.

Here, as shown in FIG. 3, an opening 42 and a microphone sound hole 44 are provided on the surface 131 of the cover 13 (surface of the housing 11) adjacent to the lower portion of the display unit 33.
The opening 42 is formed in a long hole shape so as to extend in the width direction of the cover 13, and is disposed above the plurality of pushers 52 and the plurality of domes 28 (see FIG. 2).
The microphone sound hole 44 is disposed above the microphone 23.

As shown in FIG. 2, the plurality of domes 28 are connected to the surface 172 of the second circuit board 17. The microphone 23 is connected to the back surface 171 of the second circuit board 17.
Therefore, the opening 42 and the microphone sound hole 44 are disposed on the surface 172 side of the second circuit board 17.

As shown in FIG. 3, a key cover 46 is provided above the opening 42 and the microphone sound hole 44.
The key cover 46 is formed in a substantially rectangular shape, and is provided adjacent to the surface 131 of the cover 13 below the display unit 33.
The key cover 46 has a key hole 47 formed above the opening 42 and a direct through hole 35 provided adjacent to the left side of the key hole 47. The direct hole 35 is formed above the microphone sound hole 44.

The key hole 47 is formed in a long hole shape so as to extend in the width direction of the cover 13, and communicates with the opening 42.
A plurality of keys 50 are accommodated in the opening 42 through the key holes 47, so that they are provided on the surface side of the second circuit board 17.
As shown in FIGS. 2 and 4, the plurality of keys 50 are accommodated in the openings 42, so that they are in contact with the plurality of pushers 52, respectively.
The plurality of pushers 52 are provided above the plurality of domes 28.
The plurality of domes 28 are connected to the surface 172 of the second circuit board 17.
Therefore, the dome 28 is pressed through the pusher 52 by depressing the key 50.

As shown in FIG. 4, the key 50 includes a key body 51, a pusher 52, and support legs 53 and 55. In order to distinguish each key 50, it is indicated by a left key 501, a center key 502, and a right key 503.
The key body 51 has a substantially square key top 511 exposed from the opening 42 and the key hole 47.
As shown in FIGS. 4 and 5, the support legs 53 and 55 are provided on the second circuit board 17 side in the key body 51 and can come into contact with portions other than the dome 28 in the seat 54.

Next, the positional relationship between the center CP1 of the planar contour shape of the key top 511, the center CP2 of the pusher 52, and the centers CP3 of the support legs 53 and 55 will be described.
First, the support leg 53 provided eccentrically in the width direction of the housing 11 will be described.
The pusher 52 is provided at an eccentric position with respect to the center CP1 of the planar contour shape of the key top 511, and the support leg 53 is disposed with respect to the center CP1 of the planar contour shape of the key top 511. Is provided at a position opposite to the eccentric direction.

As shown in FIGS. 2 and 4, the center CPA2 of the pusher 52 in the width direction of the casing 11 with the left and right keys 501 and 503 is inward in the width direction with respect to the center CP1 of the planar contour shape of the key top 511. It is provided at an eccentric position.
That is, the center CPA2 of the pusher 52 of the left key 501 is eccentric to the right, and the center CPA2 of the pusher 52 of the right key 503 is eccentric to the left.

The center CPA3 of the support leg 53 is provided at a position opposite to the eccentric direction of the pusher 52 with respect to the center CP1 of the planar contour shape of the key top 511.
That is, the center CPA3 of the support leg 53 of the left key 501 is shifted to the left, and the center CPA2 of the support leg 53 of the right key 503 is shifted to the right.
In the center key 502, the center CP1 of the planar contour shape and the center CPA2 of the pusher 52 are at the same position in the width direction of the casing, and the support leg 53 is not provided.
In addition, since the center CP1 of the planar contour shape of the key top 511 is one point in plan view, the same reference sign CP1 is used in the width direction and the longitudinal direction.

Next, the support leg 55 eccentric in the longitudinal direction of the housing 11 will be described.
In this case, as shown in FIG. 4, the first side LA1 is the longitudinal direction of the housing 11 (left-right direction in FIG. 4), and the second side LA2 is the width direction of the housing 11 (vertical direction in FIG. 4). It can be.
The tangent line TLA can be taken parallel to the first side LA1.

Also in this case, as shown in FIG. 6, the center CPB2 of the pusher 52 in the longitudinal direction of the housing 11 is eccentric (left side in FIG. 6) with respect to the center CP1 of the planar contour shape of the key top 511. It is provided at the position.
Further, the center CPB3 of the support leg 55 in the longitudinal direction of the casing 11 is opposite to the eccentric direction of the pusher 52 with respect to the center CP1 of the planar contour shape of the key top 511 (right side in FIG. 6). It is provided in the position.

Further, as shown in FIG. 4, the support leg 55 is parallel to the direction of the first side LA1 of the key top 511 with respect to the center CP1 of the planar contour shape of the key top 511 and to the presser 52. It is provided at a position that is more eccentric than the tangent line TLA in the direction along the second side LA2.
That is, the support leg portion 55 is eccentric in the direction of the second side LA2 orthogonal to the pusher 52 tangent line TLA. Specifically, the outer key 501 is eccentric to the inner side in the width direction of the casing 11, and the key 503 is eccentric to the outer side in the width direction of the casing 11. In the middle key 502, there is no eccentricity in the direction of the second side LA2 (that is, the width direction).

  As described above, according to the mobile terminal 10 of the embodiment according to the present invention described above, the key 50 presses the dome 28 provided on the surface 172 of the second circuit board 17 accommodated in the opening 42 of the housing 11. The key 50 includes a key body 51, a pusher 52, and support leg portions 53 and 55. The key body 51 has a substantially square key top 511 exposed from the opening 42. The pusher 52 is provided on the second circuit board 17 side in the key body 51 and presses the dome 28. The support leg portions 53 and 55 can come into contact with portions other than the dome 28 in the second circuit board 17.

  The pusher 52 is provided at a position eccentric with respect to the center CP1 of the planar contour shape of the key top 511. Further, the support legs 53 and 55 are provided at positions opposite to the eccentric direction of the pusher 52 with respect to the center CP1 of the planar contour shape of the key top 511.

  As a result, when the center of the key top 511 is pressed with a finger, the load is distributed to the pushers 52 and the support leg portions 53 and 55 located on both sides with respect to the center CP1 of the key top 511. And the center of the pusher 52 move so as to coincide with each other. For this reason, the large key top 511 is employed to ensure operability, and the internal mounting area can be reduced to reduce the size of the housing 11, thereby suppressing variations in the operation load.

  The key 50 presses the dome 28 provided on the surface of the second circuit board 17 accommodated in the opening 42 of the housing 11. The key 50 includes a key body 51, a pusher 52, and support leg portions 53 and 55. The key body 51 has a substantially square key top 511 exposed from the opening 42. The pusher 52 is provided on the second circuit board 17 side in the key body 51 and presses the dome 28. The support leg portions 53 and 55 can come into contact with portions other than the dome 28 in the second circuit board 17.

  The support leg 55 is parallel to the direction of the first side LA1 of the key top with respect to the center CP1 of the planar shape of the key top 511, and is more than the tangent line TLA to the pusher 52. Provided at a position eccentric in the direction along the second side LA2 intersecting the side LA1.

  As a result, when the center of the key top 511 is pushed with a finger, the load is distributed to the pushers 52 and the support legs 55 on both sides with respect to the center of the key top 511. Move so that the center of 52 matches. For this reason, the large key top 511 is employed to ensure operability, and the internal mounting area can be reduced to reduce the size of the housing 11, thereby suppressing variations in the operation load.

  The portable terminal of the present invention is not limited to the above-described embodiment, and appropriate modifications and improvements can be made.

  As described above, the mobile terminal according to the present invention provides the pusher at a position eccentric with respect to the center of the planar contour shape of the key top, and the support leg portion with respect to the center of the planar contour shape of the key top. Since it is provided at a position opposite to the eccentric direction of the pusher, a large key top is used to ensure operability and to reduce the internal mounting area, which enables downsizing of the housing and reduces the operating load. This has the effect of suppressing variations, and is useful as a portable terminal having a plurality of push button type key members.

10 mobile terminal 11 housing 17 second circuit board (circuit board)
28 Dome (Contact)
42 Opening 50 Key (Key member)
51 Key body 511 Key top 52 Presser 53, 55 Support leg CP1 Center of key top LA1 First side LA2 Second side TLA Tangent

Claims (2)

A housing,
An opening provided in the housing;
A circuit board housed in the housing;
A key member that is housed in the opening and that presses a contact provided on the surface of the circuit board;
The key member is
A key body having a substantially rectangular key top exposed from the opening;
A pusher provided on the circuit board side of the key body and pressing the contact;
A support leg provided on the circuit board side of the key body and capable of contacting a portion other than the contact on the circuit board;
The pusher is provided at a position eccentric with respect to the center of the planar contour shape of the key top, and the support leg is eccentric with respect to the center of the planar contour shape of the key top. A mobile terminal provided at a position opposite to the direction. A housing,
An opening provided in the housing;
A circuit board housed in the housing;
A key member that is housed in the opening and that presses a contact provided on the surface of the circuit board;
The key member is
A key body having a substantially rectangular key top exposed from the opening;
A pusher provided on the circuit board side of the key body and pressing the contact;
A support leg provided on the circuit board side of the key body and capable of contacting a portion other than the contact on the circuit board;
A second parallel to the first side direction of the key top with respect to the center of the planar contour shape of the key top and intersecting the first side with respect to a tangent to the pusher A mobile terminal provided at a position eccentric in a direction along the side.

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