Speaker box

• US 10,469,953 B2
• Filed: 12/28/2017
• Issued: 11/05/2019
• Est. Priority Date: 07/04/2017
• Status: Active Grant

• Current Assignee: AAC Technologies Pte Limited (AAC Technologies Holdings Inc.)
• Original Assignee: AAC Technologies Pte Limited (AAC Technologies Holdings Inc.)
• Inventors: Qin, Peng, Shi, Shengrong, Zhang, Zhe
• Primary Examiner(s): Le, Huyen D
• Application Number:
  US15/856,908
• Publication Number:
  US 20190014417A1
• Time in Patent Office: 677 Days
• Field of Search: 381338, 381345, 381350, 381351, 381353, 381354, 381357, 381386, 381391, 381189, 181145, 181146, 181199, 379430
• CPC Class Codes: H04M 1/035 Improving the acoustic characteristics by means of constructional features of the housing, e.g. ribs, walls, resonating chambers or cavities
• CPC Class Codes: H04R 1/025 Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
• CPC Class Codes: H04R 1/2803 for loudspeaker transducers
• CPC Class Codes: H04R 1/283 using a passive diaphragm
• CPC Class Codes: H04R 1/288 for loudspeaker transducers
• CPC Class Codes: H04R 1/345 for loudspeakers
• CPC Class Codes: H04R 2400/11 Aspects regarding the frame of loudspeaker transducers
• CPC Class Codes: H04R 2499/11 Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
• CPC Class Codes: H04R 9/06 Loudspeakers

Abstract

A speaker box includes a housing; a speaker unit accommodated in the housing, the speaker unit including a diaphragm for vibration and sound producing; a front sound cavity formed cooperatively by the diaphragm and the housing; a sound guiding channel communicating the front sound cavity with external environment; a front cavity formed by the front sound cavity and the sound guiding channel; a through hole penetrating the housing and disposed at a position on the housing corresponding to the front cavity; and an elastic cover plate arranged on a side of the housing far from the speaker unit and covering the through hole for absorbing vibration energy at a specific frequency. A Young'"'"'s modulus or strength of the elastic cover plate is smaller than that of the housing.

Claims

1. A speaker box including:

a housing, the housing comprising an upper cover and a lower cover which jointly form an accommodating space;

a speaker unit accommodated in the housing, the speaker unit including a diaphragm for vibration and sound producing;

a front sound cavity formed cooperatively by the diaphragm and the housing;

a sound guiding channel communicating the front sound cavity with external environment, sound generated by the diaphragm transmitting from the diaphragm to the external environment through the sound guiding channel;

a front cavity formed by the front sound cavity and the sound guiding channel;

a through hole penetrating the housing and disposed at a position on the housing corresponding to the front cavity;

an elastic cover plate arranged on a side of the housing away from the speaker unit and covering the through hole for absorbing vibration energy in the front cavity and generated by the diaphragm at a specific frequency, a Young'"'"'s modulus or strength of the elastic cover plate being smaller than that of the housing.

2. The speaker box as described in claim 1, wherein the through hole and the speaker unit are opposite to each other.

3. The speaker box as described in claim 2, wherein the elastic cover plate and the upper cover are fixedly connected by double-shot molding or hot pressing or pasting or ultrasonic welding.

4. The speaker box described in claim 2, wherein the elastic cover plate and the upper cover are formed by integrated injection molding.

5. The speaker box as described in claim 1, wherein the specific frequency is 500˜

15000Hz.

6. The speaker box as described in claim 5, wherein the specific frequency is 3000˜

9000Hz.

7. The speaker box as described in claim 1, wherein the elastic cover plate is made of TPU or silica gel.

8. The speaker box as described in claim 1 further comprising an adhesive pad affixed to the outside of the sound guiding channel.