Bone conductive sound generating device

Patent metadata

Field	Value
Publication number	US-11310584-B2
Application number	US-202016924122-A
Country	US
Kind code	B2
Filing date	Jul 8, 2020
Priority date	Jan 8, 2018
Publication date	Apr 19, 2022
Grant date	Apr 19, 2022

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;
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, wherein the bone conductive sound generating device further comprises a first hinge configured to connect the end of the first arm away from the rim with the first connection member, the first 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 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; and
a supportive member and an elastic member, wherein the supportive member is movably arranged with the first hinge base, 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.

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 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.

4. 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 the functional component received in the first arm and the another functional component received in the second arm; and
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 first connection thread is received in the thread channel, an end of the first connection thread extends along the thread channel to reach the rim through one of the two thread openings, and the other end of the first connection thread extends along the thread channel to reach the first arm through the other one of the two thread openings.

5. The bone conductive sound generating device according to claim 4 , wherein the rotational shaft assembly further comprises a second rotational shaft, the second rotational shaft is configured spaced apart from the first rotational shaft, the first and the second rotational shafts are coaxial;
the rim comprises a first ledge;
the first arm comprises a second ledge and a third ledge, the second ledge and the third ledge are configured at an end of the first arm close to the rim and are spaced apart from each other;
an end of the first rotational shaft close to the second rotational shaft and an end of the second rotational shaft close to the first rotational shaft are connected to two opposite ends of the first ledge, an end of the first rotational shaft away from the second rotational shaft is connected to the second ledge, and an end of the second rotational shaft away from the first rotational shaft is connected to the third ledge, such that the first ledge is configured between the second ledge and the third ledge.

6. The bone conductive sound generating device according to claim 5 , wherein the two thread openings comprise:
a first thread opening, defined on an end face of the first rotational shaft close to the second rotational shaft; and
a second thread opening, defined on a side wall of the first rotational shaft close to the second ledge,
wherein the first rotational shaft is rotatably connected to the first ledge through the end face defining the first thread opening and fixedly connected to the second ledge through the side wall defining the second thread opening.

7. The bone conductive sound generating device according to claim 5 , wherein
the first ledge defines a first receiving hole, the second ledge defines a second receiving hole, the first receiving hole and the second receiving hole are coaxial;
the first rotational shaft is configured to be received in the first receiving hole and the second receiving hole; and
an outer wall of the first rotational shaft has an interference fit with a

Assignees

• Shenzhen Shokz Co Ltd

Inventors

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

Classifications

• H04R1/1091 Primary

  Details not provided for in groups H04R1/1008 - H04R1/1083 · CPC title

• H04R2460/13

  Hearing devices using bone conduction transducers · CPC title

• H04R5/0335 Primary

  Earpiece support, e.g. headbands or neckrests (for monophonic headphones H04R1/105) · 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

• G02C11/06

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