CN-115297416-B - Bone conduction loudspeaker

CN115297416BCN 115297416 BCN115297416 BCN 115297416BCN-115297416-B

Abstract

The application discloses a bone conduction loudspeaker which comprises a driving device, a panel and a shell, wherein the driving device is used for generating driving force, the panel is in transmission connection with the driving device, all or part of the panel is used for contacting or abutting against the body of a user so as to conduct sound, the driving device is horizontally arranged in the shell, and the panel is obliquely covered on the shell, so that the normal line of the area of the panel, which is used for contacting or abutting against the body of the user, is not parallel to the straight line where the driving force is located.

Inventors

ZHENG JINBO
LIAO FENGYUN
ZHANG LEI
QI XIN

Assignees

深圳市韶音科技有限公司
深圳市韶音科技有限公司

Dates

Publication Date: 20260421
Application Date: 20190105
Priority Date: 20180615

Claims (10)

1. The bone conduction loudspeaker is characterized by comprising a driving device, a panel and a shell, wherein the driving device is used for generating driving force, the panel is in transmission connection with the driving device, all or part of the panel is used for contacting or abutting against the body of a user so as to conduct sound, the driving device is horizontally arranged in the shell, and the panel is obliquely covered on the shell, so that the normal line of only one area, which is used for contacting or abutting against the body of the user, of the panel is not parallel to the straight line where the driving force is located.
2. The bone conduction speaker according to claim 1, wherein the area on the faceplate for contact with or abutment against the body of the user is a plane or a quasi-plane, and when the area on the faceplate for contact with or abutment against the body of the user is a quasi-plane, the normal of the area is the average normal of the area, and the average normal is: is the average normal; Is the normal to any point on the surface, ds is the bin.
3. The bone conduction speaker of claim 2, wherein an angle between a normal to any point in at least 50% of the area on the quasi-plane and an average normal thereof is less than a set threshold.
4. A bone conduction speaker according to claim 3, wherein the set threshold is less than 10 °.
5. The bone conduction speaker according to claim 1, wherein an angle between a straight line where the driving force is located and the normal line is any value between 5 ° and 80 °.
6. The bone conduction speaker of claim 1, wherein the bone conduction speaker comprises a housing that cooperates with the faceplate to form a cavity that houses the driving device, the driving device comprising a coil and a magnetic circuit assembly, the coil being wholly or partially nested in a magnetic gap of the magnetic circuit assembly.
7. The bone conduction speaker of claim 6, wherein the bone conduction speaker comprises a first transmission assembly and a vibration-transmitting sheet, a portion of the first transmission assembly is of an annular structure adapted to the coil structure, and the annular structure is connected to one end face of the coil, another portion of the first transmission assembly is a connecting rod, the connecting rod is connected to the panel and/or the housing, one annular end face of the magnetic circuit assembly is connected to an outer edge of the vibration-transmitting sheet, and the first transmission assembly passes through a middle region of the vibration-transmitting sheet and is fixedly connected thereto.
8. The bone conduction speaker according to claim 6, wherein the bone conduction speaker includes a first transmission member, a vibration-transmitting sheet, and a second transmission member, a part of the first transmission member has a structure having a flange, the flange has a ring shape corresponding to the structure of the coil, and the flange is connected to the coil, another part of the first transmission member has a connection rod, the connection rod is connected to the panel and/or the housing, the second transmission member is connected between the magnetic circuit member and the vibration-transmitting sheet, an edge of the vibration-transmitting sheet is fixed to the flange, and a center of the vibration-transmitting sheet is connected to one end of the second transmission member.
9. The bone conduction speaker of claim 6, wherein the bone conduction speaker comprises a first transmission assembly, a vibration transmission plate and a second transmission assembly, a part of the first transmission assembly is of an annular structure which is adaptive to the coil structure, the annular structure is connected with one end face of the coil, the other part of the first transmission assembly is a connecting rod, the connecting rod is connected with the panel, the bottom face of the magnetic circuit assembly is connected with the vibration transmission plate through the second transmission assembly, and the outer edge of the vibration transmission plate is connected with the shell.
10. The bone conduction speaker according to claim 6, wherein the bone conduction speaker comprises a first transmission member, a first vibration-transmitting sheet, a second vibration-transmitting sheet, and a second transmission member, a part of the first transmission member has a structure having a flange, the flange has a ring shape corresponding to the structure of the coil, and the flange is connected to the coil, another part of the first transmission member has a connection rod, the connection rod is connected to the panel, the second transmission member is connected between the magnetic circuit member and the first vibration-transmitting sheet, an edge of the first vibration-transmitting sheet is fixed to the flange, a center of the first vibration-transmitting sheet is connected to one end of the second transmission member, an edge of the second vibration-transmitting sheet is connected to an open end face of the housing, and the first transmission member passes through a middle region of the second vibration-transmitting sheet and is fixedly connected thereto.

Description

Bone conduction loudspeaker Cross reference The invention relates to a division application of China patent application with the name of bone conduction loudspeaker and earphone, which is filed in the China patent office at the date of 2019, 01 and 05 and has the application number of 2019800400946. The parent application claims priority from the chinese application No. 201810623408.2 filed on 15, 2018, month 06, the contents of which are incorporated herein by reference. Technical Field The present invention relates to a speaker, and more particularly, to a bone conduction speaker. Background In general, a person can hear a sound because air transmits vibrations to the eardrum through the external auditory meatus, and the vibrations formed by the eardrum drive the auditory nerve of the person, thereby sensing the vibrations of the sound. In operation, bone conduction speakers typically transmit through the skin, subcutaneous tissue, and bone of a person to the auditory nerve of the person, thereby allowing the person to hear the sound. Disclosure of Invention The application provides a bone conduction loudspeaker which comprises a driving device, a panel and a shell, wherein the driving device is used for generating driving force, the panel is in transmission connection with the driving device, all or part of the panel is used for being contacted with or abutted against the body of a user so as to conduct sound, the driving device is horizontally arranged in the shell, and the panel is obliquely covered on the shell, so that the normal line of the area of the panel, which is contacted with or abutted against the body of the user, is not parallel to the straight line where the driving force is located. In some embodiments, the area of the panel that is intended to be in contact with or against the body of the user is a plane or quasi-plane, and when the area of the panel that is intended to be in contact with or against the body of the user is a quasi-plane, the normal to the area is the average normal to the area, and the average normal is: is the average normal; Is the normal to any point on the surface, ds is the bin. In some embodiments, the angle between the normal to any point in at least 50% of the area on the quasi-plane and its average normal is less than a set threshold. In some embodiments, the set threshold is less than 10 °. In some embodiments, the angle between the line of the driving force and the normal is any value between 5 ° and 80 °. In some embodiments, the bone conduction speaker includes a housing that cooperates with the faceplate to form a cavity that houses a driving device that includes a coil and a magnetic circuit assembly, with the coil being wholly or partially nested in a magnetic gap of the magnetic circuit assembly. In some embodiments, the bone conduction speaker comprises a first transmission component and a vibration transmission sheet, wherein one part of the first transmission component is of an annular structure which is matched with the coil structure, the annular structure is connected with one end face of the coil, the other part of the first transmission component is a connecting rod, the connecting rod is connected with the panel and/or the shell, one annular end face of the magnetic circuit component is connected with the outer edge of the vibration transmission sheet, and the first transmission component penetrates through the middle area of the vibration transmission sheet and is fixedly connected with the middle area of the vibration transmission sheet. In some embodiments, the bone conduction speaker includes a first transmission assembly, a vibration-transmitting sheet, and a second transmission assembly, a portion of the first transmission assembly has a flange, the flange has a ring shape adapted to the structure of the coil, and the flange is connected to the coil, another portion of the first transmission assembly has a connecting rod, the connecting rod is connected to the panel and/or the housing, the second transmission assembly is connected between the magnetic circuit assembly and the vibration-transmitting sheet, an edge of the vibration-transmitting sheet is fixed to the flange, and a center of the vibration-transmitting sheet is connected to one end of the second transmission assembly. In some embodiments, the bone conduction speaker comprises a first transmission component, a vibration transmission sheet and a second transmission component, wherein one part of the first transmission component is of an annular structure which is adaptive to the coil structure, the annular structure is connected with one end face of the coil, the other part of the first transmission component is a connecting rod, the connecting rod is connected with the panel, the bottom surface of the magnetic circuit component is connected with the vibration transmission sheet through the second transmission component, and the outer edge of the vibration transmission sheet is