Bone conductive sound generating device

Patent metadata

Field	Value
Publication number	US-12155990-B2
Application number	US-202217696911-A
Country	US
Kind code	B2
Filing date	Mar 17, 2022
Priority date	Jan 8, 2018
Publication date	Nov 26, 2024
Grant date	Nov 26, 2024

Abstract

A bone conductive sound generating device is provided and includes a sound generating mechanism and a fixing mechanism. The fixing mechanism is configured to act on the sound generating mechanism, such that the sound generating mechanism adheres to and fit with a back of an auricle of a user at least when the sound generating mechanism is in use. Accordingly, the present application may improve the sound quality of the bone conductive sound generating device, improving listening experience for the user.

First claim

What is claimed is:

1. A bone conductive sound generating device, comprising:
a fixing mechanism comprising a rim, a first arm, and a second arm, wherein the first arm and the second arm are connected to two opposite sides of the rim;
a first bone conductive speaker mechanism, connected to an end of the first arm away from the rim; and
a first connection member, configured to connect the first bone conductive speaker mechanism to the first arm such that the first bone conductive speaker mechanism is capable of moving from a first fixed position relative to the first arm to a second fixed position relative to the first arm through the first connection member;
a rotational shaft assembly, configured to connect the rim with the first arm,
wherein the rotational shaft assembly comprises a first rotational shaft, an end of the first rotational shaft is fixedly connected to one of the rim and the first arm, the other end of the first rotational shaft is rotatably connected to the other one of the rim and the first arm, such that the rim and the first arm are rotatable relative to each other around the rotational shaft assembly;
the first rotational shaft defines a thread channel along an axial direction of the first rotational shaft, two end faces of the first rotational shaft define two thread openings being fluidly coupled to an external environment, the thread channel is defined to be fluidly coupled to the two thread openings to further be fluidly coupled to the external environment, and the two end faces are two axial ends of the first rotational shaft that are oriented along the axial direction of the first rotational shaft;
wherein when the first bone conductive speaker mechanism is in the first fixed position relative to the first arm, a first angle is defined between the first bone conductive speaker mechanism and the first arm; and
when the first bone conductive speaker mechanism is in the second fixed position relative to the first arm, a second angle is defined between the first bone conductive speaker mechanism and the first arm, wherein the first angle is less than the second angle.

2. The bone conductive sound generating device according to claim 1 , wherein
the first bone conductive speaker mechanism comprises a fitting face;
the fitting face comprises a protruded curved face configured to adhere to and fit with a predefined region of a back of an auricle of a user, a curvature of the curved face is less than or equal to 1, an area of the curved face is less than or equal to 0.5 cm 2 or 1.0 cm 2 , and a center of the predefined region of the back of the auricle faces directly a crus of helix.

3. The bone conductive sound generating device according to claim 2 , further comprising a first hinge configured to connect the end of the first arm away from the rim with the first connection member, wherein the hinge comprises:
a first hinge base, connected to the end of the first arm away from the rim;
a first hinge shaft;
a first hinge arm, wherein an end of the first hinge arm is rotatably connected to the first hinge base through the first hinge shaft and the other end of the first hinge arm is connected to an end of the first connection member away from the first bone conductive speaker mechanism, such that the first connection member and the first bone conductive speaker mechanism is rotatable relative to the first arm to allow the first bone conductive speaker mechanism to be arranged at the first fixed position or the second fixed position relative to the first arm.

4. The bone conductive sound generating device according to claim 3 , further comprising a second hinge, wherein
the second hinge is configured to connect to the second arm and comprises a second hinge shaft;
the first hinge shaft has a first central point, the second hinge shaft has a second central point, and a hinge shaft connection line is defined between the first central point and the second central point;
a ratio of a distance between the first central point and a central point of the fitting face to a vertical distance between a symmetrical central point of the rim and the hinge shaft connection line is in a range of 0.1 to 1.5.

5. The bone conductive sound generating device according to claim 3 , wherein
the first hinge arm comprises a first support face and a second support face, arranged at an end of the first hinge arm close to the first hinge base, and the first support face and the second support face are adjacent to each other;
the first hinge further comprises a supportive member and an elastic member, the supportive member is movably arranged with the first hinge base and comprises a third support face, and the elastic member is configured to apply an elastic force to the supportive member to elastically offset the supportive member towards the first hinge arm, wherein
when the first bone conductive speaker mechanism is in the first fixed position relative to the first arm, the second support face is configured to elastically abut against the third support face, and the first bone conductive speaker mechanism is configured to adhere to and fit with the back of the auricle;
the first support face is configured to elastically abut against the third support face when the first bone conductive speaker mechanism is in the second fixed position relative to the first arm; and
when the first bone conductive speaker mechanism is transitioned between the first fixed position and the second fixed position relative to the first arm, a connective position between the first support face and the second support face is configured to elastically abut against the third support face to resist against the elastic force applied by the elastic member.

6. The bone conductive sound generating device according to claim 5 , wherein
a cross-sectional plane of the first hinge shaft is perpendicular to a central axis of the first hinge shaft; and
a ratio of a maximum distance between the first hinge shaft and the connective position on the cross-sectional plane to a minimum distance between the first hinge shaft and the first support face is in a range of 1.1 to 1.5.

7. The bone conductive sound generating device according to claim 1 , further comprising a second connection member, wherein
the first arm comprises a first body portion, arranged between and connected with the rim and the first connection member, the second arm comprises a second body portion, arranged between and connected with the rim and the second connection member;
a top surface of the first body portion and a top surface of the second body portion are on a reference horizontal plane;
the first connection member comprises a first portion and a second portion, the first portion and the second portion are symmetrical about a symmetrical plane;
the rim comprises a first sub-rim and a second sub-rim, the first sub-rim and the second sub-rim are symmetrical about a rim symmetrical plane;
an angle between the symmetrical plane and the reference horizontal plane is in a range of 65° to 85° when the first bone conductive speaker mechanism is in the first fixed position relative to the first arm; and
an angle between the symmetrical plane and a rim symmetrical plane is in a range of 5° to 30° when the first bone conductive speaker mechanism is in the first fixed position relative to the first arm.

8. The bone conductive sound generating device according to claim 1 , wherein the first arm defines a first chamber, and a functional component is received in the first chamber, the second arm defines a second chamber, and another functional component is received in the second chamber, and the bone conductive sound generating device further comprises:
a first connection thread, configured to electrically connect

Assignees

• Shenzhen Shokz Co Ltd

Inventors

• Liu Yinchao
• Zhang Haofeng
• Zhang Lei
• Li Yongjian
• Wang Yueqiang
• Chen Qian

Classifications

• H04R2460/13

  Hearing devices using bone conduction transducers · CPC title

• G02C11/06

  Hearing aids (construction of electric hearing aids H04R25/00) · CPC title

• H04R2201/10

  Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups · CPC title

• G02C11/00

  Non-optical adjuncts; Attachment thereof (G02C7/16 takes precedence) · CPC title

• H04R11/04

  Microphones · CPC title