1. Technical Field
The present disclosure relates to an electronic device equipped with speakers.
2. Description of Related Art
Portable electronic devices, such as mobile phones and tablet computers, usually have speakers. Portable electronic devices equipped with speakers define cavities for receiving the speakers. The cavities are usually large to allow resonance of sounds emitted by the speakers. However, such large cavities require a lot of space, making it difficult to miniaturize the portable communication devices. In addition, portable electronic devices equipped with speakers further define holes above the speakers for sound propagation. However, such arrangements of holes can increase the thickness of the portable electronic devices.
Therefore, there is room for improvement within the art.
Many aspects of the disclosure can be better understood with reference to the drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the views.
The first housing 10 may be a front cover of the mobile phone and includes a bottom wall 11 and a peripheral wall 13 surrounding and extending downwardly from the bottom wall 11. The bottom wall 11 and the peripheral wall 13 cooperatively surround an accommodating space 15 (see
The second housing 20 may be a rear cover of the mobile phone. The second housing 20 is engaged with the first housing 10 to cooperatively define a receiving space for accommodating the circuit board 30, the two speakers 40, the antenna 50, and other elements of the electronic device 100.
The circuit board 30 is positioned between the first and second housings 10, 20. The circuit board 30 has a first surface 301 facing the first housing 10 and an opposite second surface 302 facing the second housing 20. The circuit board 30 defines two third through holes 34 spaced from each other. Each of the two third through holes 34 is aligned with one of the first through holes 142. The circuit board 30 has two recessed portions 35 in the second surface 302. The two third through holes 34 are located in the two recessed portions 35 and communicate the two recessed portions 35, respectively. In other embodiments, the recessed portions 35 may be omitted.
The two speakers 40 are separately attached to the first surface 301 of the circuit board 30. Each speaker 40 is located at a position corresponding to one of the receiving recesses 16. The two speakers 40 send out sounds and each has a front side facing the circuit board 30 and a back side opposite to the front side.
The antenna 50 has two recessed sections 54. Each recessed section 54 has a shape and size substantially the same as the shape and size of the recessed portions 35 of the circuit board 30. So that, when the antenna 50 is assembled to the circuit board 30, the two recessed sections 54 can fittingly align with and connect to the two recessed portions 35, respectively. The antenna 50 is attached to the second surface 302 of the circuit board 30.
Two opposite sidewalls 303 of the circuit board 30 are spaced from the second housing 20 a certain distance, thereby forming two third channels 36 between the sidewalls 303 of the circuit board 30 and the second housing 20. The antenna 50 is positioned between the circuit board 30 and the second housing 20 with the two recessed sections 54 aligning with the two recessed portions 35 of the circuit board 30, enabling the third through holes 34 to be aligned and communicate with the recessed sections 54. As such, the third through holes 34 communicate with the third channels 36 through the recessed sections 54, and the recessed sections 54 communicate with the vents 12 through the third channels 36. Each second through hole 162, the corresponding first channel 182, the corresponding first through hole 142, the corresponding third through hole 34, the corresponding recessed section 54, and the corresponding third channel 36 cooperatively form a back resonating chamber of the corresponding speaker 40. Sounds emitted from a back side of the speakers 40 resonate in the corresponding back resonating chambers and exit the electronic device 100 via paths passing through the second through holes 162, the first channels 182, the first through holes 142, the third through holes 34, the recessed sections 54, the third channels 36, and the vents 12, in turn.
In other embodiments, the first channels 182 can be omitted. Correspondingly, the second holes 162 can communicate with the first holes 142 by forming holes in the ribs 14.
The electronic device 100 utilizes space among the first housing 10, the second housing 20, the circuit board 30, and the antenna 50, forming the front and back resonating chambers for the speakers 40. Sounds emitted by the speakers 40 resonate in the front and back resonating chambers and then exit the electronic device 100 through the vents 12 located at two sides of the first housing 10. As such, a large space for sounds to resonate or vents is not defined above the speakers 40, aiding in the miniaturization of the electronic devices.
It is to be understood, however, that even through numerous characteristics and advantages of the present disclosure have been set forth in the foregoing description, together with details of assembly and function, the disclosure is illustrative only, and changes may be made in detail, especially in the matters of shape, size, and arrangement of parts within the principles of the disclosure to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Number | Date | Country | Kind |
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101145193 | Nov 2012 | TW | national |
Number | Name | Date | Kind |
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20050181841 | Dou | Aug 2005 | A1 |
20060083401 | Go | Apr 2006 | A1 |
Number | Date | Country | |
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20140153769 A1 | Jun 2014 | US |