Portable electronic device

• US 8,885,867 B1
• Filed: 08/21/2013
• Issued: 11/11/2014
• Est. Priority Date: 06/10/2013
• Status: Active Grant

• Current Assignee: Acer, Inc.
• Original Assignee: Acer, Inc.
• Inventors: Tai, Kuei-Ting, Chang, Jia-Ren, Huang, Yu-Cheng, Kung, Shu-Yi
• Primary Examiner(s): Ni, Suhan
• Application Number:
  US13/971,990
• Time in Patent Office: 447 Days
• Field of Search: 381/152, 381/306, 381/333, 381/365, 381/388, 381/431
• US Class Current: 381/388
• CPC Class Codes: H04R 1/345 for loudspeakers
• CPC Class Codes: H04R 1/403 loud-speakers
• CPC Class Codes: H04R 2499/11 Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Abstract

A portable electronic device includes a cabinet and a speaker. The cabinet has a rear portion, a side wall connected to the rear portion, and an acoustic hole disposed on the side wall. The speaker is disposed in the cabinet, and has a loudspeaker membrane extending along a plane located between the acoustic hole and the rear portion. Thus, the sound quality of the portable electronic device is improved, and the thickness thereof is decreased.

Claims

1. A portable electronic device, comprising:

a cabinet, having a rear portion, a side wall connected to the rear portion, and an acoustic hole located at the side wall; and

an acoustic assembly, comprising;

a base, disposed in the cabinet, having a receiving portion and an inclined portion connected to the receiving portion, wherein a channel is formed between the inclined portion and the side wall; and

a speaker, disposed in the receiving portion, having a loudspeaker membrane, wherein a resonant chamber is formed between the loudspeaker membrane and the rear portion, and the channel communicates with the resonant chamber and the acoustic hole;

wherein the loudspeaker membrane is extended along a plane, the plane is located between the acoustic hole and the rear portion, and the acoustic hole and the plane are separated by a predetermined distance.

2. The portable electronic device as claimed in claim 1, wherein the predetermined distance is from 1 mm to 1.5 mm, and a distance between the loudspeaker membrane and the rear portion is from 0.3 mm to 1 mm.

3. The portable electronic device as claimed in claim 1, wherein the inclined portion has an inclined surface, and the channel is formed between the inclined surface and the side wall.

4. The portable electronic device as claimed in claim 3, wherein the arc surface is an arc surface, and the channel is an arc channel.

5. The portable electronic device as claimed in claim 1, wherein a volume of the resonant chamber is from 0.1 cc to 0.3 cc, and a volume of the channel is from 0.05 cc to 0.2 cc.

6. The portable electronic device as claimed in claim 1, wherein a ratio of a total volume of the resonant chamber and the channel to the volume of the speaker is about 1:

2.

7. The portable electronic device as claimed in claim 1, further comprising a gasket located between the receiving portion and the rear portion, and the resonant chamber is located in the gasket, wherein the gasket has a first surface located at the receiving portion, a second surface located at the inclined portion, and an inclined surface connected to the first surface and the second surface, wherein the first and second surfaces are parallel to each other, and the inclined surface is inclined relative to the first and second surfaces.

8. The portable electronic device as claimed in claim 1, wherein the acoustic assembly further comprises a flexible printed circuit board disposed on the base, and the speaker further comprises an electrode resilient tap connected to the flexible printed circuit board.

9. The portable electronic device as claimed in claim 1, wherein a width of the resonant chamber is greater than a width of the channel.

10. The portable electronic device as claimed in claim 1, further comprising a display panel disposed in the cabinet, and the speaker is located between the rear portion and the display panel.

11. The portable electronic device as claimed in claim 10, further comprising a main printed circuit board disposed in the cabinet, and not located between the speaker and the display panel.