JP2001308998A - Portable terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable terminal that prevents its acoustic components from being detached even when an external force is exerted to a front case and can sufficiently enhance the substantial performance of the acoustic components. SOLUTION: An acoustic component support member 16 supporting acoustic components 15 such as a speaker is fitted to a main board 14 in the portable terminal thereby fixing the acoustic components 15 to the main board 14. When the main board 14 with the acoustic components 15 mounted thereon is contained in a front case 11, a radiation section of the acoustic components 15 and a receiving hole 12 of the front case 11 are communicative via a cushion member. Through the configuration above, when an external force is exerted to the front case 11, the external force deforms the front case 11 but the stress resulting from the deformation does not affect the acoustic components 15 so as to prevent the acoustic components 15 from being detached from the main board 14. Moreover, a front air chamber in front can be provided to the acoustic components 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable terminal device provided with an acoustic component, such as a portable telephone provided with a speaker for receiving a sound.

[0002]

2. Description of the Related Art In a portable terminal device such as a portable telephone, for example, a speaker for outputting a reception sound, a sounder for generating a ringer sound for an incoming call, a microphone for inputting a transmission sound, and the like are provided as sound components. A display unit including a liquid crystal display panel for displaying various information such as a telephone number, character information, and a reception state, operation buttons for performing various operation inputs, and the like are provided to realize a communication function such as a voice call.

[0003] A conventional portable terminal device generally has an acoustic component holding structure as shown in FIGS. 8 and 9. An acoustic component 52 is attached to the inner surface of the front case 51 by a fixing member 53. This acoustic component 52
Is disposed at a position facing the receiving hole 56 formed in the front case 51 via a cushion member 57 made of a flexible member such as a porous material through which sound is transmitted.
3 fixed. On a main board 54 provided inside the front case 51, electronic circuit components (not shown) are mounted, and a liquid crystal holding member 55 is attached.
The liquid crystal display element 59 is mounted and held. Sound component 5
2, the terminal 60 contacts the terminal portion (not shown) of the main board 54 when the main board 54 is housed inside and the front case 51 and the back case (not shown) are assembled. The connection is made.

As shown in FIG. 10A, the fixing member 53 is formed in a U-shape so as to hold the outer surface of the acoustic component 52, and has locking claws 53a at both ends. . The acoustic component 52 is mounted and fixed to the front case 51 by engaging the locking claw 53a with a mounting projection 58 protruding around the inside of the receiving hole 56 of the front case 51. ing.

In Japanese Patent Application Laid-Open No. 11-266292, a holder having an integrated structure having a sounder fitting portion and a speaker fitting portion is provided as a sound component mounting structure. An example of holding is disclosed.

[0006]

In the conventional acoustic component holding structure shown in FIGS. 8 to 10, particularly when there is no space in the thickness direction, the assembled state shown in FIG. For example, when an external force that presses the front case 51 from the outside in the direction indicated by the arrow is applied, the front case 51 is deformed as shown in FIG. 10B, and the retaining structure cannot withstand this deformation and is locked. In some cases, the engagement of the claws 53a is released, and the fixing member 53 and the acoustic component 52 may fall off. Further, in the structure of the conventional example, when the housing of the device is formed thin, it is difficult to secure the front air chamber necessary for providing predetermined acoustic performance in the thickness direction (the height direction in the figure). However, there is a problem that it is difficult to sufficiently exhibit the original performance of the acoustic component 52.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a first object of the present invention is to prevent a sound component from dropping off even when an external force acts on a housing, and to prevent a malfunction of the sound component. It is to provide a terminal device. Further, a second object of the present invention is to provide a portable terminal device capable of securing a larger space between the acoustic component and the housing and sufficiently extracting the performance of the acoustic component.

[0008]

According to the present invention, there is firstly provided a portable terminal device having a sound component for outputting or inputting a sound inside a housing, wherein a sound component holding member for holding the sound component is provided. A main substrate to which the acoustic component holding member is attached, and a housing having an acoustic hole for allowing an action section of the acoustic component to communicate with the outside, wherein the acoustic component holding member is attached to the main substrate to thereby produce the acoustic component. A portable terminal device for fixing a component to the main board, storing the main board to which the acoustic component is attached in the housing, and connecting the acoustic component to the acoustic hole.

Secondly, the present invention provides a portable terminal device wherein the acoustic component holding member is formed integrally with a display component holding member for holding a display element, and is attached to the main board.

Third, there is provided a portable terminal device provided with a front air chamber between the acoustic component and an acoustic hole of the housing.

Fourthly, a portable terminal device having an acoustic component for outputting or inputting sound inside a housing, wherein an acoustic component holding member for retaining the acoustic component and a display component for retaining a display element A holding member, a main substrate to which the acoustic component holding member and the display component holding member are attached, and a housing having an acoustic hole that allows an action portion of the acoustic component to communicate with the outside; A display component holding member integrally formed with the display component holding member, the display component holding member integrally formed with the acoustic component holding member being attached to the main substrate, thereby fixing the audio component to the main substrate; A portable terminal device is provided, in which a main board having the electronic component attached thereto is housed in the housing, and the acoustic component communicates with the acoustic hole.

In the above configuration, when an external force, such as a force pushing the housing, acts on the housing, the external force deforms the housing, but the acoustic component and the acoustic component holding member are mounted on the main board. Since it is not fixed to the housing side, it is not directly affected by stress due to deformation of the housing. For this reason, troubles such as removal of the acoustic component do not occur. In addition, it is possible to increase the distance between the acoustic component and the housing, so that a sufficiently large front air chamber can be easily secured in front of the action section that emits or captures sound in the acoustic component. become. By providing the desired size of the front air chamber, the performance of the acoustic component can be sufficiently exhibited, and a predetermined acoustic performance can be obtained.

Further, by integrally forming the sound component holding member and the display component holding member and attaching them to the main board, the number of assembly steps can be reduced, the number of components can be reduced, and further space saving can be achieved. I can do it.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 relate to a first embodiment of the present invention. FIG. 1 is a perspective view showing the structure of a front case and a main board of a portable terminal device, and FIG. 3 is a perspective view showing a holding member for the acoustic component. In the present embodiment, an example in which the present invention is applied to a mobile phone as an example of a mobile terminal device is shown. However, the present invention is not limited to this. It is applicable to various electronic devices.

As shown in FIGS. 1 and 2, the portable terminal device is arranged such that a main board 14 on which various electronic circuit components (not shown) are mounted is housed in a front case 11. . In the vicinity of one end of the front case 11, a receiving hole 12 corresponding to an acoustic hole for transmitting sound for the acoustic component 15 is formed. In the vicinity of the receiving hole 12, a display surface of a liquid crystal display element 19 is formed. A display window 13 serving as an opening is provided.

On the other hand, an acoustic component 15 comprising a speaker for outputting a reception sound for a reception function is attached to the main board 14 by an audio component holding member 16. A display component holding member 17 is mounted near the acoustic component holding member 16, and a liquid crystal display element 19 is mounted and held thereon. Acoustic component holding member 16
Is formed of an insulating material such as a resin, and as shown in FIG.
It has a box shape with a depth and a size that can accommodate the acoustic component 15, and has an opening 16 a on one surface corresponding to the structure of the radiating portion corresponding to the action portion of the acoustic component 15. A leg 16b is extended from an opposite side wall of the acoustic component holding member 16, and a locking claw 16c is formed at a tip of the leg 16b so as to project inward from each other.
By engaging the locking claws 16 c with fixing holes (not shown) provided on the main board 14, the acoustic component holding member 16 containing the acoustic components 15 is fixed on the main board 14.

FIG. 2 shows a state in which the acoustic component 15 is attached.
As shown in FIG. 5, the acoustic component 15 is urged and fixed to the main board 14 by the acoustic component holding member 16, and the acoustic component 15
The protruding terminals 20 come into contact with terminal portions (not shown) of the main board 14 and are electrically connected to the drive circuits on the main board 14. Between the acoustic component holding member 16 and the inside of the earpiece hole 12 of the front case 11, a cushion member 18 made of a soft material having good sound transmission characteristics such as a porous material is interposed. The receiving hole 12 and the radiating portion of the acoustic component 15 are arranged so as to communicate with each other via the cushion member 18.

In the above configuration, the acoustic component 15
At the time of attachment, the acoustic component 15 is mounted on the acoustic component holding member 16 in advance, and the acoustic component holding member 16 is
Is inserted into the fixing hole of the main board 14, and the leg 1
The locking claw 16c at the tip of 6b is locked to the back surface of the main board 14. Thereby, the acoustic component 15 is fixed to the main substrate 14 together with the acoustic component holding member 16, and the acoustic component 15
Are electrically connected to the drive circuit mounted on the main board 14. A display component holding member 17 is attached and fixed to the main substrate 14, and a liquid crystal display element 19 is mounted on the display component holding member 17.

Then, the main board 14 on which the acoustic components 15 and the like are mounted is housed and fixed inside the front case 11. At this time, the cushion member 18 is attached inside the receiving hole 12 of the front case 11 and is interposed between the upper surface of the acoustic component holding member 16 and the inner surface of the front case 11. Finally, a back case (not shown) is attached to and attached to the front case 11 containing the main board 14 to complete the case body.

As described above, the portable terminal device of the present embodiment
An acoustic component holding member 16 is provided on the main board 14 side, and an acoustic component 15 is attached and fixed. The front case 11 has a structure in which members such as the acoustic component 15 and the acoustic component holding member 16 cannot be attached. Therefore, as shown in FIG. 4A, for example, when an external force that presses the front case 11 from the outside in the direction indicated by the arrow is applied, FIG.
As shown in (B), the external case deforms the front case 11, but the stress is absorbed in the space where the cushion member 18 is provided, and the acoustic component holding member 16 and the acoustic component 1 are deformed.
No external force is directly transmitted to 5. For this reason, the deformation of the front case 11 does not affect the acoustic component 15 at all, and a problem such as the acoustic component 15 coming off the main board 14 does not occur. Therefore, the reliability of the portable terminal device can be improved.

Further, by mounting the acoustic component 15 on the main board 14, the acoustic component 15
The distance between the front case 11 and the front case 11 can be further increased, and a large front air chamber provided in front of the acoustic component 15 can be secured. As a result, the performance of the acoustic component can be sufficiently brought out, and the communication quality can be improved.

FIGS. 5 to 7 relate to a second embodiment of the present invention. FIG. 5 is a perspective view showing the structure of a front case and a main board of the portable terminal device, and FIG. FIG. 7 is a cross-sectional view showing a configuration of a modified example in which the acoustic component and the holding member are changed.

As shown in FIGS. 5 and 6, the second embodiment is an example in which the acoustic component holding member 22 and the display component holding member 23 are integrally formed. 22 and the display component holding member 23 are
Attached to and fixed.

The acoustic component holding member 22 is integrally formed so as to protrude from one side of the display component holding member 23, and has a shape and a size capable of accommodating the acoustic component 15 and a radiating portion of the acoustic component 15. An opening 22a is provided corresponding to the structure. The acoustic component holding member 22 is mounted and fixed on the main board 14 together with the display component holding member 23. At this time, as shown in FIG. 6, the acoustic component 15 is urged and fixed to the main board 14 by the acoustic component holding member 22, and the terminal 20 protruding from the acoustic component 15 comes into contact with a terminal portion (not shown) of the main board 14. As a result, it is electrically connected to the drive circuit on the main board 14. A cushion 18 is interposed between the acoustic component holding member 22 and the inside of the receiving hole 12 of the front case 11, and the acoustic component 15 communicates with the receiving hole 12 via the cushion 18.

The other structure is the same as that of the first embodiment, and the same parts are denoted by the same reference numerals and description thereof will not be repeated.

When attaching the acoustic component 15, the acoustic component 15 is first housed in the acoustic component holding member 22, and the display component holding member 23 formed integrally with the acoustic component holding member 22 is attached to the main substrate 14. Is fixed by engaging with a fixing notch (not shown) provided in the above. Thereby, the acoustic component 15
Are fixed to the main board 14 together with the sound component holding member 22 and the display component holding member 23, and the terminal 2 of the sound component 15 is
0 is electrically connected to the drive circuit mounted on the main board 14. The display component holding member 23 includes the liquid crystal display element 1.
9 is attached. The main board 1 on which the cushion member 18 is interposed between the inside of the receiving hole 12 of the front case 11 and the upper surface of the acoustic component holding member 22 and the acoustic component 15 and the like are mounted.
4 is stored and fixed inside the front case 11.

As a modification of the second embodiment, FIG.
When an acoustic component 25 having a flat terminal at the bottom as shown in FIG. 7 is used instead of the leaf spring-shaped terminal 20 as shown in FIG. 7, the integrated acoustic component holding member 22 and the display component holding member 23 are also used. Can be similarly configured. In this case, when the acoustic component 25 is attached, the bottom surface of the acoustic component 25 comes into contact with the main board 14, and the terminal provided on the bottom of the acoustic component 25 is electrically connected to the circuit on the main board 14. Is done.

In the configuration of the second embodiment, the same operation and effect as those of the first embodiment can be obtained. That is, it is possible to prevent the acoustic component from falling off when an external force is applied, to secure a sufficient front air chamber between the acoustic component and the case, and to improve the acoustic performance.
Further, by integrally forming the acoustic component holding member 22 and the display component holding member 23, the display component holding member 2
3 is mounted on the main board 14 and the acoustic component holding member 22 is
In addition, since the acoustic component 15 can be attached, the number of assembly steps can be reduced, the number of components can be reduced, and further space saving and cost reduction can be achieved.

The present invention is not limited to the configuration of the above embodiment, and various changes can be made without departing from the gist of the present invention. In the above-described embodiment, a configuration including a speaker having a receiving function as an acoustic component has been exemplified. However, a sounder that outputs a ringing tone (ringer sound), a microphone that captures a transmitting sound, a buzzer that generates an operation sound, and the like. The present invention can be applied to a holding structure for various acoustic components.

[0031]

As described above, according to the present invention, there is provided a portable terminal device capable of preventing the sound component from falling off even when an external force acts on the housing, and preventing the malfunction of the sound component. it can. In addition, it is possible to provide a portable terminal device that can secure a larger space between the acoustic component and the housing and can sufficiently bring out the performance of the acoustic component.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of a front case and a main board of a portable terminal device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view illustrating a main configuration of the mobile terminal device according to the first embodiment.

FIG. 3 is a perspective view showing a holding member of the acoustic component according to the first embodiment.

FIG. 4 is an operation explanatory diagram showing a state when an external force is applied to the front case of the portable terminal device of the embodiment.

FIG. 5 is a perspective view showing a configuration of a front case and a main board of a portable terminal device according to a second embodiment of the present invention.

FIG. 6 is a cross-sectional view illustrating a main configuration of a portable terminal device according to a second embodiment.

FIG. 7 is a cross-sectional view illustrating a configuration of a modification in which the acoustic component and the holding member are changed in the second embodiment.

FIG. 8 is a perspective view showing a configuration of a front case and a main board of a conventional portable terminal device.

FIG. 9 is a cross-sectional view showing a configuration of a main part of a conventional portable terminal device.

FIG. 10 is an operation explanatory view showing a state when an external force is applied to the front case of the portable terminal device of the conventional example.

[Explanation of symbols]

 REFERENCE SIGNS LIST 11 front case 12 earpiece 13 display window 14 main board 15 acoustic component 16, 22 acoustic component holding member 17, 23 display component holding member 18 cushion material 19 liquid crystal display element 20 terminal

Claims (4)

[Claims] 1. A portable terminal device having an audio component for outputting or inputting sound inside a housing, comprising: an audio component holding member for holding the audio component; and a main board to which the audio component holding member is attached. A housing having an acoustic hole through which an action portion of the acoustic component communicates with the outside, wherein the acoustic component holding member fixes the acoustic component to the main substrate by being attached to the main substrate. A portable terminal device comprising: a main board on which the acoustic component is attached; the main substrate being accommodated in the housing, and the acoustic component communicating with the acoustic hole. 2. The portable terminal device according to claim 1, wherein the acoustic component holding member is formed integrally with a display component holding member that holds a display element, and is attached to the main board. 3. The portable terminal device according to claim 1, wherein a front air chamber is provided between the acoustic component and an acoustic hole of the housing. 4. A portable terminal device having an acoustic component for outputting or inputting sound inside a housing, comprising: an acoustic component holding member for holding the audio component; a display component holding member for holding a display element; A main substrate to which the acoustic component holding member and the display component holding member are attached,
A housing having an acoustic hole through which the action part of the acoustic component communicates with the outside, wherein the acoustic component holding member and the display component holding member are integrally formed, and the acoustic component holding member is integrally formed. The acoustic component is fixed to the main substrate by attaching a display component holding member to the main substrate, and the main substrate to which the acoustic component is attached is housed in the housing to communicate the acoustic component with the acoustic hole. A portable terminal device characterized by being made to work.