JP2005244784A - Portable communication terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To attain miniaturization of a portable communication terminal having a pair of loudspeakers by compactly disposing components in the terminal. <P>SOLUTION: In a portable communication terminal, a pair of loudspeakers 4, 4 are disposed right and left and side by side inside a cabinet, and sound discharging holes for passing sonic waves from both loudspeakers 4, 4 are opened at right and left sides on the cabinet. Furthermore, a vibrating unit 5 for call incoming notification is arranged between the pair of loudspeakers 4, 4 inside the cabinet. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a portable communication terminal such as a cellular phone, and more particularly to a portable communication terminal having a pair of speakers.

In recent years, mobile phones have become smaller and thinner and have become more multifunctional, and not only telephone communication functions and mail transmission / reception functions, but also FM radio broadcast reception functions and music data for downloading music data via the Internet. Those having a receiving function have been developed.
In such a cellular phone, a pair of left and right speakers are built in the cabinet, and music data can be reproduced in stereo (for example, Patent Document 1).
JP 2002-27028 A [H04M1 / 00]

However, in a mobile phone, it is necessary to mount a large number of parts such as a vibration unit for notifying incoming calls, a camera for photographing an image, a tuner for receiving radio broadcasts, and especially a mobile phone incorporating a pair of speakers. In a telephone, since two speakers occupy a large space, the problem of an increase in size due to an increase in the number of parts is remarkable.
Accordingly, an object of the present invention is to reduce the size of a portable communication terminal having a pair of speakers by using a compact component arrangement.

  In the portable communication terminal according to the present invention, a pair of speakers (4) and (4) are arranged side by side in the cabinet (1), and both speakers (4) and (4) are installed in the cabinet (1). Sound emission holes (12) and (12) for passing sound waves from the right and left are opened on the left and right. In addition, a vibration unit (5) for notifying an incoming call is provided between the speakers (4) and (4) inside the cabinet (1).

  In a portable communication terminal having a pair of speakers (4) and (4), the two speakers (4) and (4) are arranged as far as possible to enhance the stereo effect. A dead space is generated between the speakers (4) and (4). Therefore, the portable communication terminal according to the present invention effectively uses the space in the cabinet (1) by installing the vibration unit (5) in the dead space formed between the speakers (4) and (4). Is intended.

In a specific configuration, the pair of speakers (4) and (4) are arranged on both sides of the center line of the cabinet (1), and the vibration unit (5) is installed on the center line of the cabinet (1). Yes.
According to the specific configuration, since the source of vibration when there is an incoming call is located on the center line of the cabinet (1), even if there is an incoming call while installed on the desk, Thus, the portable communication terminal does not move violently in any one direction, and the possibility of falling from the desk is low.

In a specific configuration, the pair of speakers (4) and (4) and the vibration unit (5) are held on a holder (6) installed on the inner surface of the cabinet (1).
The vibration unit (5) has a larger height than the speaker (4) and the like, and when such a structure for directly holding the vibration unit (5) on the inner surface of the cabinet (1) is adopted, the cabinet (1 It is necessary to project a rib with a large height on the inner surface of the), and the mold used for resin molding of such a cabinet (1) becomes complicated. However, according to the above specific configuration, the vibration unit ( Since 5) is held on a holder (6) separate from the cabinet (1), the mold used for resin molding of the cabinet (1) is simplified.

In a more specific configuration, a seal member (7) is interposed between the back surface of the holder (6) and the inner surface of the cabinet (1), and the seal member (7) includes both speakers (4) (4). A two-layer structure of an elastic sheet (71) having openings (71a) (71a) in two regions facing each other and a mesh sheet (72) covering the entire surface of the elastic sheet (71), and the openings (71a ) (71a) communicates with the sound emission holes (12) and (12), respectively.
According to the specific configuration, the mesh sheet (72) is waterproofed to the speakers (4) and (4), and the vibration of the vibration unit (5) is efficiently transmitted to the cabinet (1) via the elastic sheet (71). Is transmitted. Furthermore, the sound wave emitted from each speaker (4) is guided through the opening (71a) of the elastic sheet (71) without leaking to the sound emission hole (12).

  According to the portable communication terminal of the present invention, since the vibration unit (5) is installed using a dead space formed between a pair of speakers, the space in the cabinet (1) is effectively used. As a result, downsizing is realized through compact component arrangement.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention applied to a foldable mobile phone will be specifically described below with reference to the drawings.
The foldable mobile phone according to the present invention is configured by connecting a main body cabinet (1) and a lid cabinet (2) to each other by a hinge mechanism (3) so as to be opened and closed as shown in FIG.

A concave surface (11) is formed on the rear surface of the main body cabinet (1) at the end far from the hinge mechanism (3), and a plurality of first sound emitting holes are respectively formed on the left and right ends of the concave surface (11). (12) has been established.
Moreover, the 2nd sound emission hole (13) opened toward the side is opened in the both sides of the concave surface (11) of the main body cabinet (1), respectively.

As shown in FIG. 3, the main body cabinet (1) is formed by joining the back side cabinet half (15) and the front side cabinet half (16), and the front side cabinet half (16) has a plurality of surfaces. The operation key (14) is provided.
Inside the main cabinet (1), a pair of left and right speakers (4) and (4) sandwich the center line of the main cabinet (1) toward the first left and right sound emission holes (12) and (12). It is deployed on both sides. In addition, as shown in FIG. 4, a vibration unit (5) for notifying incoming calls is installed between the speakers (4) and (4).

As shown in FIG. 5, an installation surface (18) including an area where the first sound emission holes (12) and (12) are formed is formed in the rear-side cabinet half (15). A holder (6) is installed on (18) via a seal member (7), and a pair of speakers (4) and (4) are installed downward on the holder (6) and a vibration unit (5) Is retained.
In the body (61) of the holder (6), two openings (63) and (63) that should be opposed to the sound emitting surfaces of both speakers (4) and (4) are opened and the vibration unit (5) is held. A vibration unit holding part (62) for projecting is provided.

  The sealing member (7) includes a porous elastic sheet (71) having openings (71a) and (71a) in two regions facing the two speakers (4) and (4), and the entire surface of the elastic sheet (71). It has a two-layer structure in which a mesh sheet (72) covering the two is laminated, and is installed in close contact with the installation surface (18) of the back side cabinet half (15).

In the assembly process, the holder (6) is installed on the installation surface (18) of the rear cabinet half (15) via the seal member (7), and the speakers (4) (4) are placed on the holder (6). ) And vibration unit (5) attached, insert the two screws (40) and (40) into the ends of the speakers (4) and (4) and place their tips on the back cabinet half (15). The speakers (4), (4) and the vibration unit (5) are fixed to the rear-side cabinet half (15) as shown in FIG.
In this state, the terminals (41) and (41) of the speakers (4) and (4) and the terminal (51) of the vibration unit (5) are exposed on the surface.

  On the other hand, the circuit board (8) is mounted on the front cabinet half (16) as shown in FIG. 6, and the front cabinet half (16) is put on the rear cabinet half (15) shown in FIG. By joining and fixing both cabinet halves (15) and (16), the electrodes (81), (81) and (82) of the circuit board (8) shown in FIG. 6 are respectively connected to the speakers (4) and (4) shown in FIG. ) Contacts the terminals (41) and (41) and the terminals (51) of the vibration unit (5), and electrical connection is made.

Further, as shown in FIG. 3, the speakers (4), (4) and the vibration unit (5) on the holder (6) are sandwiched between the front cabinet half (16) and the rear cabinet half (15). Thus, the mechanical connection to the main body cabinet (1) is made.
Here, the sealing member (7) is sandwiched between the back side cabinet half (15) and the holder (6) and is elastically compressed, and is closely attached to the inner surface of the back side cabinet half (15) by the repulsive force. At the same time, it adheres to the back of the holder (6).

As a result, the sound emitting surface of the speaker (4) passes through the sealed space formed by the opening (63) of the holder (6) and the opening (71a) of the seal member (7), and then the rear cabinet half (15). This leads to the first sound emission hole (12) and the second sound emission hole (13).
Accordingly, the sound wave emitted from the speaker (4) is emitted to the outside of the main body cabinet (1) from the first sound emitting hole (12) of the back side cabinet half (15) through the sealed space, and at the same time. The sound is not leaked from the second sound emitting hole (13) of the rear cabinet half (15) to the outside of the main cabinet (1) through the sealed space. This provides a high stereo effect.

  When the incoming call is received, the vibration unit (5) is operated, and the vibration of the vibration unit (5) is efficiently transmitted to the main body cabinet (1) through the holder (6) and the seal member (7). 1) will be vibrated greatly.

In the foldable mobile phone of the present invention, since the vibration unit (5) is compactly installed between the pair of speakers (4) and (4), the space in the cabinet (1) can be effectively utilized. As a result, downsizing is realized.
Further, since the structure in which the pair of speakers (4) (4) and the vibration unit (5) are incorporated on the common holder (6) is adopted, the assembly process is simplified.

When an incoming call is received with the foldable mobile phone of the present invention placed on a desk, the vibration unit (5), which is a vibration source, is arranged on the center line of the main body cabinet (1). The telephone does not move violently in either one of the left and right with vibration, and the possibility of dropping from the desk is low.
Even when the speaker (4) (4) rings with the foldable mobile phone of the present invention placed on a desk with the back of the main cabinet (1) facing down, Since one sound emitting hole (12) is formed in the concave surface (11), the exit of the sound wave emitted from the first sound emitting hole (12) is secured.

It is a perspective view of a foldable mobile phone according to the present invention. It is a rear view of the foldable mobile phone. It is sectional drawing of the main body cabinet in alignment with the AA of FIG. It is a perspective view which shows the assembly state of a back side cabinet half body, a speaker, and a vibration unit. It is a disassembled perspective view of a back side cabinet half, a speaker, and a vibration unit. It is a perspective view which shows the assembly state of a front side cabinet half body and a circuit board.

Explanation of symbols

(1) Main unit cabinet
(2) Lid cabinet
(3) Hinge mechanism
(11) Concave
(12) First sound hole
(13) Second sound hole
(15) Rear cabinet half
(16) Front cabinet half
(4) Speaker
(5) Vibration unit
(6) Holder
(62) Vibration unit holder
(63) Opening
(7) Seal member
(71) Elastic sheet
(72) Mesh sheet

Claims (4)

  A pair of speakers (4) and (4) are installed side by side inside the cabinet (1), and the cabinet (1) has sound emission holes (through which sound waves from both speakers (4) and (4) pass). 12) In the portable communication terminal in which (12) is opened on the left and right sides, the cabinet (1) has a vibration unit (incoming call notification unit) between the pair of speakers (4) and (4). A portable communication terminal characterized in that 5) is provided.   The pair of speakers (4), (4) are arranged on both sides of a center line of the cabinet (1), and the vibration unit (5) is installed on the center line of the cabinet (1). The portable communication terminal described in 1.   The portable speaker according to claim 1 or 2, wherein the pair of speakers (4) (4) and the vibration unit (5) are held on a holder (6) installed on an inner surface of the cabinet (1). Communication terminal. A seal member (7) is interposed between the back surface of the holder (6) and the inner surface of the cabinet (1), and the seal member (7) has two two facing the speakers (4) and (4). It has a two-layer structure of an elastic sheet (71) having openings (71a) (71a) in the region and a mesh sheet (72) covering the entire surface of the elastic sheet (71), and the openings (71a) (71a) The portable communication terminal according to any one of claims 1 to 3, wherein the portable communication terminal communicates with each of the sound emission holes (12) and (12).

Images