US-20260129348-A1 - SPEAKERS ASSEMBLIES AND EARPHONES

US20260129348A1US 20260129348 A1US20260129348 A1US 20260129348A1US-20260129348-A1

Abstract

Provided are a speaker assembly and an earphone. The speaker assembly includes a housing assembly, a bone-conduction speaker, and an air-conduction speaker. The housing assembly is provided with a first accommodating cavity, a second accommodating cavity, and a communication hole connecting the first accommodating cavity and the second accommodating cavity. The bone-conduction speaker is disposed in the first accommodating cavity and blocks the communication hole to isolate the first accommodating cavity from the second accommodating cavity. The air-conduction speaker is disposed in the second accommodating cavity. The present disclosure can simply and effectively enlarge a volume of an acoustic cavity formed in an internal space of the speaker assembly, thereby improving the sound quality effect of the speaker assembly.

Inventors

Guangyuan Zhu
Lei Zhang
Xin Qi

Assignees

Shenzhen Shokz Co., Ltd.

Dates

Publication Date: 20260507
Application Date: 20251229

Claims (20)

1 . A speaker assembly, comprising: a housing assembly provided with a first accommodating cavity, a second accommodating cavity, and a communication hole connecting the first accommodating cavity and the second accommodating cavity; a bone-conduction speaker disposed in the first accommodating cavity and blocking the communication hole to isolate the first accommodating cavity from the second accommodating cavity; and an air-conduction speaker disposed in the second accommodating cavity.
2 . The speaker assembly according to claim 1 , wherein: the housing assembly is provided with a sound outlet hole and at least one pressure relief hole connecting the second accommodating cavity with an external environment, the sound outlet hole and the at least one pressure relief hole being arranged at intervals.
3 . The speaker assembly according to claim 1 , wherein: the housing assembly includes a partition wall that separates the first accommodating cavity from the second accommodating cavity, the communication hole being provided on the partition wall; and the bone-conduction speaker blocks the communication hole on a side of the partition wall facing the first accommodating cavity.
4 . The speaker assembly according to claim 1 , wherein: the bone-conduction speaker has a first central axis and is configured to generate a vibration in a direction of the first central axis; and the bone-conduction speaker has a peripheral surface arranged around the first central axis, the peripheral surface blocks the communication hole.
5 . The speaker assembly according to claim 4 , wherein: the bone-conduction speaker includes a cylindrical housing extending along the first central axis, a voice coil assembly, a magnet assembly, and one or more vibration transmission plates; the voice coil assembly and the magnet assembly are disposed in a cylindrical space of the cylindrical housing; the one or more vibration transmission plates are fixedly connected to one of the magnet assembly and the voice coil assembly and to the cylindrical housing; the other one of the magnet assembly and the voice coil assembly is fixedly connected to the cylindrical housing; and the cylindrical housing blocks the communication hole.
6 . The speaker assembly according to claim 3 , wherein: the bone-conduction speaker abuts against the partition wall to block the communication hole; and/or a sealing member is provided between the bone-conduction speaker and the partition wall, the sealing member being arranged surrounding the communication hole.
7 . The speaker assembly according to claim 6 , wherein: the sealing member includes at least one of a sealing adhesive and a sealing ring.
8 . The speaker assembly according to claim 3 , wherein: the housing assembly is provided with a support wall within the first accommodating cavity, the supporting wall and the partition wall jointly enclosing a limiting space; the bone-conduction speaker is disposed within the limiting space and abuts against the supporting wall; and the supporting wall and the partition wall are configured to cooperatively limit a radial movement of the bone-conduction speaker relative to the housing assembly.
9 . The speaker assembly according to claim 2 , wherein: the air-conduction speaker is configured to divide the second accommodating cavity into a first sub-cavity and a second sub-cavity isolated from each other, the first sub-cavity is in communication with the sound outlet hole, and the second sub-cavity is in communication with the at least one pressure relief hole and the communication hole.
10 . The speaker assembly according to claim 9 , wherein: the air-conduction speaker includes a diaphragm and a driving mechanism, the driving mechanism being connected to the diaphragm, and an internal acoustic cavity is enclosed between the diaphragm and the driving mechanism; wherein: the diaphragm is located closer to the communication hole than the driving mechanism, the diaphragm is arranged opposite to the communication hole and faces the second sub-cavity, and the first sub-cavity is in communication with the internal acoustic cavity; or the diaphragm is located farther from the communication hole than the driving mechanism, the diaphragm is disposed away from the communication hole and faces the first sub-cavity, and the second sub-cavity is in communication with the internal acoustic cavity.
11 . The speaker assembly according to claim 10 , wherein: the driving mechanism includes a voice coil and a magnetic circuit assembly; the magnetic circuit assembly includes a cover having an open end and an annular flange provided at the open end of the cover and protruding from an outer peripheral surface of the cover; an edge of the diaphragm is fixed to the annular flange; the voice coil is connected to a side of the diaphragm facing the magnetic circuit assembly; an internal acoustic cavity is enclosed between the diaphragm and the magnetic circuit assembly, the diaphragm being located on a side of the cover that is away from the sound outlet hole and faces the communication hole; and the first sub-cavity is in communication with the internal acoustic cavity.
12 . The speaker assembly according to claim 2 , wherein: a count of the at least one pressure relief hole equal to or exceed 1, and a plurality of pressure relief holes are arranged at intervals.
13 . The speaker assembly according to claim 12 , wherein: the bone-conduction speaker has a first central axis and is configured to generate a vibration in a direction of the first central axis; the air-conduction speaker has a second central axis and is configured to generate a vibration in a direction of the second central axis; the housing assembly has a first side, a second side, and a third side, the first side and the second side are arranged opposite to each other in a direction perpendicular to the first central axis and the second central axis, the third side is adjacent to the first side and the second side, and the first central axis or the second central axis passes through the third side; and at least one of the plurality of pressure relief holes is provided on the first side or the second side, and at least one of the plurality of pressure relief holes is provided on the third side.
14 . The speaker assembly according to claim 13 , wherein: the housing assembly is provided with a body ridge protruding outward on the third side, and another one of the plurality of pressure relief holes penetrates through the body ridge to communicate with an external environment.
15 . The speaker assembly according to claim 2 , wherein: the bone-conduction speaker has a first central axis and is configured to generate a vibration in a direction of the first central axis; the air-conduction speaker has a second central axis and is configured to generate a vibration in a direction of the second central axis; the first central axis and the second central axis are non-coplanar lines, and in a direction perpendicular to the first central axis and the second central axis, the first central axis and the second central axis are offset from each other; and the housing has a wall portion adjacent to the first accommodating cavity in the direction perpendicular to both the first central axis and the second central axis, the pressure relief hole being provided on the wall portion.
16 . The speaker assembly according to claim 15 , wherein: the pressure relief hole extends flaredly through the wall portion from the second accommodating cavity toward an exterior of the housing assembly, and a portion of a hole wall of the pressure relief hole near the first accommodating cavity gradually inclines towards a side where the first accommodating cavity is located.
17 . The speaker assembly according to claim 15 , wherein: a distance between the first central axis and the second central axis is in a range of 0.2 mm to 0.8 mm.
18 . An earphone, comprising: a wearing assembly; and a speaker assembly, wherein the wearing assembly is connected to the speaker assembly, and the speaker assembly includes: a housing assembly provided with a first accommodating cavity, a second accommodating cavity, and a communication hole connecting the first accommodating cavity and the second accommodating cavity; a bone-conduction speaker disposed in the first accommodating cavity and blocking the communication hole to isolate the first accommodating cavity from the second accommodating cavity; and an air-conduction speaker disposed in the second accommodating cavity.
19 . The earphone according to claim 18 , wherein: the housing assembly is provided with a sound outlet hole and at least one pressure relief hole connecting the second accommodating cavity with an external environment, the sound outlet hole and the at least one pressure relief hole being arranged at intervals.
20 . The earphone according to claim 18 , wherein: the housing assembly includes a partition wall that separates the first accommodating cavity from the second accommodating cavity, the communication hole being provided on the partition wall; and the bone-conduction speaker blocks the communication hole on a side of the partition wall facing the first accommodating cavity.

Description

CROSS REFERENCE TO RELATED APPLICATIONS This application is a continuation of International Patent Application No. PCT/CN 2023/126021, filed on Oct. 23, 2023, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD The present disclosure relates to the technical field of electronic devices, and in particular, to speaker assemblies and earphones. BACKGROUND With the continuous popularization of electronic devices, the electronic devices have become indispensable social and entertainment tools in people's daily lives, and requirements for electronic devices are also becoming increasingly higher. Headphones, as this type of electronic device, have also been widely used in people's daily lives. The earphones may cooperate with terminal devices such as mobile phones and computers to provide an auditory feast for users. However, because the internal space of the earphones is relatively small and the weight is limited, the volume of the acoustic cavity that generates a vibration within a speaker assembly arranged in the earphones is relatively small, which causes the sound quality of the speaker assembly to be unsatisfactory. SUMMARY To solve the above technical problem, the present disclosure provides a speaker assembly and an earphone, which can simply and effectively enlarge a volume of an acoustic cavity formed in an internal space of the speaker assembly, thereby improving the sound quality of the speaker assembly. To solve the above technical problem, the present disclosure provides a speaker assembly. The speaker assembly comprises a housing assembly, a bone-conduction speaker, and an air-conduction speaker. The housing assembly is provided with a first accommodating cavity, a second accommodating cavity, and a communication hole connecting the first accommodating cavity and the second accommodating cavity. The bone-conduction speaker is disposed in the first accommodating cavity and blocks the communication hole to isolate the first accommodating cavity from the second accommodating cavity. The air-conduction speaker is disposed in the second accommodating cavity. In some embodiments, the housing assembly is provided with a sound outlet hole and at least one pressure relief hole connecting the second accommodating cavity with an external environment, the sound outlet hole and the at least one pressure relief hole being arranged at intervals. In some embodiments, the housing assembly includes a partition wall that separates the first accommodating cavity from the second accommodating cavity, the communication hole being provided on the partition wall. The bone-conduction speaker blocks the communication hole on a side of the partition wall facing the first accommodating cavity. In some embodiments, the bone-conduction speaker has a first central axis and is configured to generate a vibration in a direction of the first central axis. The bone-conduction speaker has a peripheral surface arranged around the first central axis, and the peripheral surface blocks the communication hole. In some embodiments, the bone-conduction speaker includes a cylindrical housing extending along the first central axis, a voice coil assembly, a magnet assembly, and a vibration transmission plate; the voice coil assembly and the magnet assembly are disposed in a cylindrical space of the cylindrical housing; the vibration transmission plate is fixedly connected to one of the magnet assembly and the voice coil assembly and to the cylindrical housing; the other one of the magnet assembly and the voice coil assembly is fixedly connected to the cylindrical housing; and the cylindrical housing blocks the communication hole. In some embodiments, the bone-conduction speaker abuts against the partition wall to block the communication hole. In some embodiments, a sealing member is provided between the bone-conduction speaker and the partition wall, the sealing member being arranged surrounding the communication hole. In some embodiments, the sealing member includes at least one of a sealing adhesive and a sealing ring. In some embodiments, the housing assembly is provided with a support wall within the first accommodating cavity, the support wall and the partition wall jointly enclosing a limiting space; the bone-conduction speaker is disposed within the limiting space and abuts against the support wall; and the support wall and the partition wall are configured to cooperatively limit a radial movement of the bone-conduction speaker relative to the housing assembly. In some embodiments, the air-conduction speaker is configured to divide the second accommodating cavity into a first sub-cavity and a second sub-cavity that are isolated from each other, the first sub-cavity is in communication with the sound outlet hole, and the second sub-cavity is in communication with the at least one pressure relief hole and the communication hole. In some embodiments, the air-conduction speaker includes a diaphragm and a driving