Title:
LOUDSPEAKER BOX AND TERMINAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/077460
Kind Code:
A1
Abstract:
The utility model provides a loudspeaker box and a terminal device. The loudspeaker box comprises an upper cover plate, a lower cover plate forming an accommodating cavity with the upper cover plate, a sound production monomer accommodated in the accommodating cavity, a first steel sheet fixed on the lower cover plate, and conductive foam provided between the first steel sheet and the sound production monomer. An opening corresponding to the sound production monomer is formed on the lower cover plate, the first steel sheet comprises a first main body covering the opening and a fixed part formed by extending from the first main body to the lower cover plate, and the fixed part and the lower cover plate are injection-molded. A second steel sheet connected to a grounding feed point is fixedly provided on the upper cover plate, a via hole is formed on the lower cover plate, and the fixed part is at least partially exposed by means of the via hole. The loudspeaker box further comprises a conduction connector. One end of the conduction connector is connected to the second steel sheet, and the other end thereof extends into the via hole to be connected to the fixed part. By applying the technical solution, the technical problems in the prior art that when the sound production monomer is communicated with the complete machine to be grounded, resistance is large and unstable, and overall conductivity fluctuates are solved.
More Like This:
| WO/2014/205859 | RESONANCE SOUND GENERATOR, BASE, AND METHOD FOR MANUFACTURING BASE |
| WO/2002/019759 | BONE CONDUCTION VIBRATOR |
Inventors:
LI JINMING (CN)
Application Number:
PCT/CN2019/115047
Publication Date:
April 29, 2021
Filing Date:
November 01, 2019
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (SG)
AAC TECHNOLOGIES PTE LTD (SG)
International Classes:
H04R9/06; H04R9/02
Foreign References:
| CN204425606U | 2015-06-24 | |||
| CN204681580U | 2015-09-30 | |||
| CN204798096U | 2015-11-25 | |||
| CN205179353U | 2016-04-20 | |||
| CN207099321U | 2018-03-13 | |||
| US20080289439A1 | 2008-11-27 | |||
| US20150034350A1 | 2015-02-05 |
Other References:
LIANG JIJING: "Ground circuit", FAMILY ELECTRONICS, no. 7, 15 April 2005 (2005-04-15), pages 58, XP055805893, ISSN: 1005-4669
Attorney, Agent or Firm:
HENSEN INTELLECTUAL PROPERTY FIRM (CN)
Download PDF: