JP4497007B2 - Mobile phone terminal - Google Patents

Description

  The present invention relates to a mobile phone terminal, and more particularly, to a mobile phone terminal that can emit a sound that can be easily heard by a user, regardless of whether it is used on the human head side or in other cases.

  In recent years, mobile terminals are equipped with functions such as videophone calls, hands-free calling, and video playback, and users are increasingly listening to sound while the mobile terminal is away from the human head. In order to make sound emitted from a small speaker that can be mounted on a portable terminal reach a user's ear with a sufficient size, it is necessary to install the speaker so as to emit sound to the user side.

  On the other hand, as a method of using a mobile phone terminal, it is still the mainstream to talk while holding it on the human head side. Must be able to output.

  For this reason, many recent mobile phone terminals are provided with speakers on the front and back (front and rear) of the terminal. However, the speakers on the front and back of the terminal are not necessarily required to emit sound simultaneously, and these are mostly used alternatively. That is, the current mobile phone terminal is provided with a plurality of speakers that are alternatively used components.

  Although downsizing of portable terminals and upsizing of display screens are strongly desired, the installation of a plurality of speakers hinders these.

  On the other hand, there is a strong demand for outputting ringtones and video playback sounds from stereo speakers.

  In other words, if you try to mount a stereo speaker used for hands-free calls or music playback, and a plurality of speakers that are used alternatively such as a receiver for calls, the size and weight of the terminal can be reduced. There has been a problem that the display screen becomes large.

  As a conventional technique related to the arrangement of speakers of a portable terminal, there are an “information processing apparatus” disclosed in Patent Document 1 and a “portable wireless device” disclosed in Patent Document 2.

  In the invention disclosed in Patent Literature 1, a speaker unit is attached to or pulled out of a housing of an information processing apparatus, and a telephone call or the like is performed with the speaker unit protruding from the housing. To do. If the speaker unit is mounted outside the housing, the speaker mounting space can be easily secured.

The invention disclosed in Patent Document 2 is to install a speaker on a slide plate that can be pulled out from the housing, and by making a call while the slide plate is pulled out from the housing, the distance between the microphone and the speaker is increased. Keeps the phone properly and makes it easier to hear the call.
JP 2003-263241 A JP 2004-015628 A

  However, when the speaker unit is used in a state of protruding from the housing as in the invention disclosed in Patent Document 1, the speaker unit may be damaged or the speaker unit may fall off.

  In addition, the invention disclosed in Patent Document 2 has the same problems as the invention disclosed in Patent Document 1, and only considers use in a state of being held on the human head side. Cannot handle usage (such as hands-free calling) that listens to sound while watching.

  Thus, conventionally, there has not been provided a mobile phone terminal that includes a plurality of alternatively used speakers and that can be reduced in size, weight, and display screen.

  The present invention has been made in view of such a problem, and provides a mobile phone terminal that includes a plurality of alternatively used speakers and can be reduced in size, weight, and display screen. Objective.

In order to achieve the object, the present invention can be equipped with a sound conversion element that emits sound according to an input electric signal and a speaker unit that includes an input terminal electrically connected to the sound conversion element. A plurality of slots, each slot includes a terminal for outputting an electrical signal to the input terminal, and a sound hole for emitting the sound output from the attached speaker unit to the outside of the terminal,
One of the slots is provided at a position close to a user's ear when used on the head side of a human body.

  In the above configuration, each slot has a moving member installed via an elastic member that generates an elastic force in a direction orthogonal to the attaching / detaching direction of the speaker unit, and a flexible member attached to the moving member. Then, when the speaker unit is inserted, the inserted speaker unit moves the moving member, and the flexible member is brought into close contact with the speaker unit by the elastic force generated by the elastic member, and the speaker unit is placed in the slot. It is preferable to hold it. In addition to this, the moving member has a through hole for guiding the sound output from the speaker unit to the sound hole, and is installed on the surface of the slot where the sound hole is formed via an elastic member. More preferably, the flexible member is formed so as to surround the through hole.

  Each of the above slots has a moving member installed via an elastic member that generates an elastic force in a direction orthogonal to the attaching / detaching direction of the speaker unit, and a flexible member attached to the moving member. The moving member preferably includes a guide member for maintaining the gap between the flexible member and the speaker unit until the speaker unit is inserted into a predetermined position. In addition, it is preferable that the speaker unit is positioned at a predetermined mounting position by fitting the unevenness provided on each of the moving member and the speaker unit.

  In any of the above configurations, it is preferable that at least one of the slots includes a lid that can be opened and closed at its opening, and the slot functions as a resonance box when the lid is closed. In addition, it is preferable to include information display means for visually displaying information, and to have at least one slot having sound holes for emitting sound in a direction substantially the same as the display direction of the information display means. Moreover, it is preferable that the speaker unit attached to the slot near the user's ear when used on the human head side functions as a receiver.

In addition, the moving member includes a through hole for guiding the sound output from the speaker unit to the sound hole, and is installed on the surface where the sound hole of the slot is formed via an elastic member,
In any configuration in which the flexible member is formed so as to surround the through-hole, the slot provided in the position close to the user's ear when used on the human head side is not attached to the speaker unit. The flexible member is brought into close contact with the surface on which the receiver is disposed so as to face the surface on which the sound hole is formed by the elastic force generated by the elastic member, and the sound emitted from the receiver is transmitted to the outside of the terminal through the sound hole. Preferably it is emitted.

  ADVANTAGE OF THE INVENTION According to this invention, the portable terminal provided with the speaker used for a hands-free telephone call, music reproduction, etc., and the speaker for telephone calls, which can be reduced in size, weight, and the display screen can be enlarged.

[First Embodiment]
A first embodiment in which the present invention is suitably implemented will be described. FIG. 1 shows a configuration of a mobile phone terminal according to the present embodiment. The mobile terminal 1 includes a first slot 4 and a second slot 5. The detachable speaker 2 can be attached to and detached from either the first slot 4 or the second slot 5.

  When the detachable speaker 2 is inserted into the first slot 4, the center of the diaphragm is collinear with the center of the first sound hole 3 (the same as the straight line perpendicular to the paper (front-rear direction of the housing)). ). Further, when the detachable speaker 2 is inserted into the second slot 5, the center of the diaphragm is positioned on the same line as the center of the second sound hole 6.

FIG. 2 shows the configuration of the detachable speaker 2. The detachable speaker 2 includes a diaphragm 7 and a terminal 8. The diaphragm 7 and the terminal 8 are electrically connected. The diaphragm 7 is configured using a piezoelectric element that generates a distortion corresponding to an applied voltage. When a voltage is applied to the piezoelectric element, the diaphragm 7 is displaced by causing a bending motion by compression and extension. By repeating this bending motion, the diaphragm 7 is vibrated to generate sound. The mechanism is known as a sound generation method using a pressure sound element.
A groove is provided in the lower center of the back surface of the detachable speaker 2.

FIG. 3 shows the appearance of the mobile terminal. (A) is a front view, (b) is a rear view. FIG. 4A shows a cross section taken along the line AA ′ of FIG.
The first slot 4 includes a moving plate 9, a spring 10, a first cushion 11, and a second cushion 12, and the spring 10 connects the mobile terminal 1 and the moving plate 9. The first cushion 11 is physically connected to the moving plate 9. The second cushion 12 connects the mobile terminal 1 and the moving plate 9.

FIG. 4B shows a BB ′ cross section of FIG. The first slot 4 is provided with a third sound hole 14, and the moving plate 9 is provided with a fourth sound hole 15. The center line of the receiver 13 is located on the same line as the center lines of the third sound hole 14, the fourth sound hole 15, and the first sound hole 3.
The receiver 13 is fixed to the mobile terminal 1, and all sound signals output from the receiver 13 pass through the third sound hole 14.

Further, FIG. 5A shows a CC ′ cross section of FIG. The second slot 5 includes a moving plate 19, a spring 16, a third cushion 18, and a fourth cushion 17.
A DD ′ cross section of FIG. 3B is shown in FIG. The second slot 5 includes a second sound hole 6 and a sixth sound hole 21, and the moving plate 19 includes a fifth sound hole 20. The center line of the second sound hole 6 is located on the same line as the center lines of the fifth sound hole 20 and the sixth sound hole 21.

  FIG. 6 shows the configuration of the moving plate 9. (A) is a front view, (b) is a rear view, and (c) is a side view. The centers of the first cushion 11 and the fourth sound hole 15 are located at the center of the moving plate 9. Protrusions serving as guides are provided on the left and right sides (directions (width direction) both ends perpendicular to the insertion direction) of the moving plate 9, and the left and right convex parts have substantially the same shape. Each convex portion has a shape in which the central portion in the insertion direction is convex.

  The four springs 10 are arranged at the four corners of the moving plate 9 so that the front surface of the moving plate 9 is maintained in a state parallel to the inner wall surface of the mobile terminal 1. The second cushion 12 is installed so as to surround the fourth sound hole 15.

  FIG. 7 shows the configuration of the moving plate 19. (A) is a front view, (b) is a rear view, and (c) is a side view. The centers of the third cushion 18 and the fifth sound hole 20 are located at the center of the moving plate 19. Convex portions serving as guides are provided on the left and right sides of the moving plate 19, and the left and right convex portions have substantially the same shape. Each convex portion has a shape in which the central portion in the insertion direction is convex.

  The four springs 16 are arranged at the four corners of the moving plate 19 so that the front surface of the moving plate 19 is maintained in parallel with the inner wall surface of the mobile terminal. The center of the fourth cushion 17 is located at the center of the moving plate 19.

  As shown in FIG. 4B, in a state where the detachable speaker 2 is not inserted into the first slot 4, the moving plate 9 is pushed toward the receiver side of the mobile terminal 1 by the spring 10, and the first cushion 11. Comes into contact with the inner wall of the portable terminal 1. The audio signal output from the receiver 13 passes through the third sound hole 14 and the fourth sound hole 15. In addition, since the second cushion 12 is in close contact with the mobile terminal 1 and the moving plate 9, all sound signals output from the fourth sound hole 15 pass through the first sound hole 3. As a result, it is possible to output all sound signals output from the receiver 13 from the first sound hole 3, and it is possible to prevent the received sound volume from being reduced due to sound leakage.

FIG. 8A shows a cross section taken along the line AA ′ with the detachable speaker 2 inserted into the first slot 4.
When the detachable speaker 2 is inserted into the first slot 4, the convex portion on the front surface of the detachable speaker 2 moves along the guide of the moving plate 9, so that the moving plate 9 is on the spring 10 side by the height of the guide. Is pushed back. Thereby, the removable speaker 2 is inserted into the first slot 4 without contacting the first cushion 11. When the convex part of the detachable speaker 2 reaches the point A along the guide as it is, the guide prevents the detachable speaker 2 from moving, and the position of the detachable speaker 2 is fixed. Moreover, since the height of the guide which the convex part of the detachable speaker 2 touches also becomes low, the space | interval of the detachable speaker 2 and the moving plate 9 becomes narrow. As a result, the first cushion 11 is in close contact with the detachable speaker 2.

  FIG. 8B shows a cross section taken along the line A-A ′ in a state where the detachable speaker 2 has reached point A. FIG. The terminal 8 of the detachable speaker 2 is in electrical contact with a terminal (not shown) on the mobile terminal 1 side. The sound signal output from the diaphragm 7 of the detachable speaker 2 is output from the first sound hole 3 through the fourth sound hole 15. Since the first cushion 11 is in close contact with the detachable speaker 2 due to the repulsive force of the spring 10, all sound signals output from the diaphragm 7 can be output from the first sound hole 3. Thereby, it can prevent that a sound leaks and a detachable speaker volume becomes small. At the same time, a sound signal output from the groove provided on the rear surface of the removable speaker 2 toward the rear surface of the diaphragm 7 is output into the first slot 4. Thereby, the space inside the first slot 4 is used as a resonance box.

  When the detachable speaker 2 is pulled out from the first slot 4, the moving plate 9 moves to the receiver 13 side by the repulsive force of the spring 10 and returns to the original state (the state shown in FIG. 4B).

  Next, a state where the detachable speaker 2 is inserted into the second slot 5 will be described. As shown in FIG. 5B, in a state where the detachable speaker 2 is not inserted, the moving plate 19 is pushed toward the inside of the portable terminal 1 by the repulsive force of the spring 16, and the third cushion 18 is carried. The terminal 1 is in close contact with the inner wall.

FIG. 9A shows a CC ′ cross section in a state in which the detachable speaker 2 is inserted into the second slot 5.
When the detachable speaker 2 is inserted into the second slot 5, the convex portion on the front surface of the detachable speaker 2 moves along the guide of the moving plate 19, so that the moving plate 19 is on the spring side by the height of the guide. Is pushed back. Thereby, the detachable speaker 2 is inserted into the second slot 5 without coming into contact with the third cushion 18.
When the convex part of the detachable speaker 2 reaches the point B along the guide, the guide blocks the movement of the detachable speaker 2, so that the detachable speaker 2 is fixed. Moreover, since the height of the guide which the convex part of the detachable speaker 2 touches also becomes low, the space | interval of the detachable speaker 2 and the movement board 19 becomes narrow. As a result, the third cushion 18 is in close contact with the detachable speaker 2.

FIG. 9B shows a DD ′ cross section in a state where the detachable speaker 2 has reached point B. FIG.
The terminal 8 of the detachable speaker 2 is in electrical contact with a terminal (not shown) on the mobile terminal 1 side. A sound signal emitted from the diaphragm 7 of the detachable speaker 2 is output from the second sound hole 6 through the fifth sound hole 20. Since the third cushion 18 is in close contact with the detachable speaker 2 by the repulsive force of the spring 16, all sound signals emitted from the diaphragm 7 can be output from the second sound hole 6. Thereby, it can prevent that a sound leaks and a detachable speaker volume becomes small. At the same time, a sound signal emitted from the groove provided on the back surface of the detachable speaker 2 and the sixth sound hole 21 toward the back surface of the diaphragm 7 is output into the second slot 5. Thereby, the space inside the second slot 5 is used as a resonance box.

  When the detachable speaker 2 is pulled out from the second slot 5, the moving plate 19 is moved by the repulsive force of the spring 16, and returns to the original state (the state shown in FIG. 5B).

As described above, the portable terminal according to the present embodiment can attach the detachable speaker 2 to both the first slot 4 and the second slot 5, and each slot does not use a screw or an adhesive material. A mechanism for holding the detachable speaker 2 is provided.
When the detachable speaker 2 is attached to the first slot 4, it is possible to output the received voice during hands-free call and the voice / voice music signal during video playback from the first sound hole 3 that is also a receiver sound hole. It becomes possible. Further, when the detachable speaker 2 is mounted in the second slot 5, a voice / voice signal at the time of stereo incoming call or stereo video reproduction can be output from the second sound hole 6 and another speaker (not shown).

Since the portable terminal according to the present embodiment places the detachable speaker 2 on the front surface of the receiver 13 and can output a sound signal from the receiver sound hole (first sound hole 3), a hands-free call or video reproduction is performed. Sound can be output to the display screen.
In addition, since the detachable speaker 2 can be mounted in either the first slot 4 or the second slot 5, it can be used not only as a receiver speaker but also as a ringtone ringing speaker. This makes it possible to output sound to the display screen side when performing a hands-free call or video playback without increasing the number of speakers.
Further, by providing a fixed speaker in the mobile terminal 1 in addition to the detachable speaker 2, it is possible to output audio in stereo.
Further, since the sound signal is output to the display screen side using the sound hole for the receiver, a hands-free call or the like can be performed without providing a new sound hole.
Furthermore, since the removable speaker is fixed using the frictional force of the cushion attached to the diaphragm fixed by the spring, the removable speaker can be easily attached and detached.

[Second Embodiment]
A second embodiment in which the present invention is suitably implemented will be described.
The mobile terminal 1 according to the present embodiment has substantially the same configuration as that of the first embodiment. However, as shown in FIG. 10, in this embodiment, the receiver 13 of the first slot 4 is omitted.

The portable terminal 1 according to the present embodiment can output a received voice instead of the receiver 13 when the detachable speaker 2 is attached to the first slot 4. Thereby, the number of parts can be reduced, and the portable terminal 1 can be reduced in size and weight.
Since other aspects are the same as those in the first embodiment, a duplicate description is omitted.

Each of the above embodiments is an example of a preferred embodiment of the present invention, and the present invention is not limited to these.
For example, in each of the above embodiments, the case where the portable terminal is a straight type has been described as an example, but a folding type portable terminal may be used. When the portable terminal is a foldable type, the position of the second slot 5 may be above or below the hinge.
Further, an openable / closable lid may be provided at the opening of the first slot 4 or the second slot 5. In this way, the sound signal output from the groove on the back surface of the detachable speaker 2 can be more strongly reflected in each slot, and dust can be prevented from entering the slot.
As described above, the present invention can be variously modified.

It is a figure which shows the structure of the mobile telephone terminal concerning 1st Embodiment which implemented this invention suitably. It is a figure which shows the structure of a detachable speaker. It is a figure which shows the external appearance of the mobile telephone terminal concerning 1st Embodiment. It is a figure which shows the structure of a 1st slot. It is a figure which shows the structure of a 2nd slot. It is a figure which shows the structure of the movement board with which a 1st slot is provided. It is a figure which shows the structure of the movement board with which a 2nd slot is provided. It is a figure which shows the state which attached the detachable speaker to the 1st slot. It is a figure which shows the state which attached the detachable speaker to the 2nd slot. It is a figure which shows the structure of the 1st slot of the mobile telephone terminal concerning 2nd Embodiment which implemented this invention suitably.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mobile phone terminal 2 Removable speaker 3 First sound hole (receiver sound hole)
4 First Slot 5 Second Slot 6 Second Sound Hole 7 Diaphragm 8 Terminal 9, 19 Moving Plate 10, 16 Spring 11 First Cushion 12 Second Cushion 13 Receiver 14 Third Sound Hole 15 Third 4 sound hole 17 4th cushion 18 3rd cushion 20 5th sound hole 16 6th sound hole

Claims (8)

A plurality of slots in which a speaker unit including an electric sound conversion element that emits sound according to an input electric signal and an input terminal electrically connected to the electric sound conversion element can be mounted;
Each slot includes a terminal for outputting an electrical signal to the input terminal, and a sound hole for emitting the sound output from the attached speaker unit to the outside of the terminal,
Any one of the slots is provided at a position close to the user's ear when used on the human head side ,
Each slot has a moving member installed via an elastic member that generates an elastic force in a direction orthogonal to the attaching / detaching direction of the speaker unit, and a flexible member attached to the moving member,
When the speaker unit is inserted, the inserted speaker unit moves the moving member, and accordingly, the flexible member comes into close contact with the speaker unit by the elastic force generated by the elastic member. A mobile phone terminal, wherein the unit is held in a slot . The moving member includes a through hole for guiding sound output from the speaker unit to the sound hole, and is installed on the surface of the slot where the sound hole is formed via the elastic member,
  The mobile phone terminal according to claim 1, wherein the flexible member is formed so as to surround the through hole. 3. The moving member includes a guide member for maintaining a gap between the flexible member and the speaker unit until the speaker unit is inserted into a predetermined position. Mobile phone terminals. 4. The mobile phone according to claim 1, wherein the speaker unit is positioned at a predetermined mounting position by fitting concave and convex portions provided on each of the moving member and the speaker unit. 5. Terminal. 5. The device according to claim 1, wherein at least one of the slots includes a lid that can be opened and closed at its opening, and the slot functions as a resonance box when the lid is closed. Mobile phone terminal. An information display means for visually displaying information is provided, and at least one slot having the sound hole for emitting sound in a direction substantially the same as the display direction of the information display means is provided. Item 6. The mobile phone terminal according to any one of Items 1 to 5. The mobile phone terminal according to any one of claims 1 to 6, wherein a speaker unit mounted in a slot at a position close to a user's ear when used on the human head side functions as a receiver. The slot provided at a position close to the user's ear when used on the human head side is a surface on which the sound hole is formed by the elastic force generated by the elastic member when the speaker unit is not attached. 7. The flexible member is brought into close contact with a surface on which the receiver is disposed so as to face the terminal, and a sound emitted from the receiver is emitted outside the terminal through the sound hole. A mobile phone terminal according to claim 1.

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