CN-122003877-A - Acoustic device

Abstract

The present specification relates to an acoustic device including a sound emitting portion, a suspension structure. In the wearing state, the inner side surface of the sounding part shell is provided with sounding holes, and the other side surfaces are provided with pressure relief holes. On a reference plane parallel or tangential to the side surface of the effective ventilation port of the pressure relief hole, the effective ventilation port of the pressure relief hole has a first projection, and the sound outlet hole has a second projection. The first projection defines a plurality of parallel first characteristic line segments which are perpendicular to the inner side surface and have two ends located on the first projection outline, one of two endpoints of any first characteristic line segment, which is far away from the second projection, is a reference point, the plurality of reference points comprise a first reference point and a second reference point, the distance from any first reference point to the second projection is smaller than the distance from any second reference point to the second projection, the plurality of first characteristic line segments comprise a first sub-line segment passing through the first reference point and a second sub-line segment passing through the second reference point, and the first length of the first sub-line segment is smaller than the second length of the second sub-line segment.

Inventors

• LIANG JIANING
• ZHANG LEI
• QI XIN

Assignees

• 深圳市韶音科技有限公司

Dates

Publication Date

20260508

Application Date

20240822

Claims (20)

1. An acoustic device, comprising: a sound emitting part including a housing and a diaphragm accommodated in the housing, the diaphragm being configured to generate sound by vibrating; A hanging structure configured to wear the sound emitting portion at a position near but not blocking an ear canal of a user, wherein, In the wearing state, the inner side surface of the shell facing to the auricle of a user is provided with a sound outlet, the sound outlet is configured to guide out the sound generated by the front side of the vibrating diaphragm to the shell, the other side surfaces of the shell except the inner side surface are provided with pressure relief holes, the pressure relief holes are configured to guide out the sound generated by the rear side of the vibrating diaphragm to the shell, The pressure relief hole comprises an effective ventilation port, the effective ventilation port is provided with a first projection on a reference plane, the reference plane is parallel or tangential with the side surface where the effective ventilation port is positioned, the reference plane is perpendicular to the inner side surface, the first projection defines a plurality of mutually parallel first characteristic line segments perpendicular to the inner side surface and both ends of which are positioned on the outline of the first projection, the sound outlet is provided with a second projection on the reference plane, one of two end points of any first characteristic line segment, which is far away from the second projection, is a reference point, The plurality of reference points comprise a first reference point and a second reference point, the distance from any one of the first reference points to the second projection is smaller than the distance from any one of the second reference points to the second projection, the plurality of first characteristic line segments comprise a first sub-line segment passing through the first reference point and a second sub-line segment passing through the second reference point, the first sub-line segment has a first length, the second sub-line segment has a second length, and the first length is smaller than the second length.
2. The acoustic device of claim 1, wherein a projection of the sound generating portion on the reference plane has a long axis direction, the first projection includes a first side parallel to the long axis direction and a second side disposed opposite to the first side, and the first reference point and the second reference point are both located on the second side.
3. The acoustic device of claim 2, wherein an angle between the second side and the first side is 0 ° -60 °.
4. The acoustic device of claim 2, wherein in the long axis direction, the first projection includes a first feature point nearest to the second projection, a first feature length is provided between the first reference point and the first feature point, a ratio of the first length of the first sub-line segment to the first feature length is a first length ratio, a second feature length is provided between the second reference point and the first feature point, a ratio of the second length of the second sub-line segment to the second feature length is a second length ratio, and the first length ratio is greater than the second length ratio.
5. The acoustic device of claim 1, wherein as the distance from the reference point of the first feature line segment to the second projection increases, the length of the first feature line segment correspondingly increases.
6. An acoustic device according to claim 2 or 5, wherein the length of the first characteristic line segment is 0.5mm-1.6mm.
7. The acoustic device of claim 6, wherein the pressure relief hole comprises a first pressure relief hole located on an upper side of the housing, and the first feature line segment corresponding to the first pressure relief hole has a length of 0.5mm-1.6mm.
8. The acoustic device of claim 6, wherein the pressure relief hole comprises a second pressure relief hole located on a lower side of the housing, and the first characteristic line segment corresponding to the second pressure relief hole has a length of 1mm-1.6mm.
9. The acoustic device of claim 1, wherein the diaphragm is connected to the housing by a bracket, the pressure relief hole comprises an outer port opening on the housing and an inner port enclosed by the bracket and the housing, the inner port having an area smaller than an area of the outer port, the inner port constituting the effective ventilation port.
10. The acoustic device of claim 1 wherein the housing includes a connection end connected to the suspension structure and a free end facing away from the connection end, the sound outlet being disposed closer to the free end than the connection end.
11. The acoustic device of claim 10 wherein the projection of the sound emitting portion on the reference plane has a long axis direction in which the first reference point is closer to the center of the projection of the free end on the reference plane than the second reference point.
12. The acoustic device of claim 11, wherein the distance between the first reference point and the center of the projection of the free end on the reference plane in the long axis direction is a fifth characteristic length, the ratio of the first length to the fifth characteristic length is a fifth length ratio, the distance between the second reference point and the center of the projection of the free end on the reference plane in the long axis direction is a sixth characteristic length, the ratio of the second length to the sixth characteristic length is a sixth length ratio, and the fifth length ratio is smaller than the sixth length ratio.
13. The acoustic device of claim 1, wherein a projection of the sound emitting portion on the reference plane has a long axis direction in which the first projection has two end points farthest from each other, a line segment passing through a midpoint of the two end points in the first characteristic line segment divides the first projection into two parts, wherein a region enclosed by a part close to the second projection has a first area, and a region enclosed by another part distant from the second projection has a second area, the first area being smaller than the second area.
14. The acoustic device of claim 13 wherein the ratio of the first area to the second area is 0.5-0.99.
15. The acoustic device of claim 13, wherein the relief aperture comprises a first relief aperture and a second relief aperture, the first relief aperture is located on an upper side of the housing, the second relief aperture is located on a lower side of the housing, a ratio of a first projected area of the first relief aperture to a second projected area of the first relief aperture is a first area ratio, a ratio of the first projected area of the second relief aperture to the second projected area of the first relief aperture is a second area ratio, and the first area ratio is less than the second area ratio.
16. The acoustic device of claim 1, wherein a projection of the sound generating portion on the reference plane has a long axis direction in which the first projection has two end points farthest apart, a distance between the two end points being 4mm-6mm.
17. An acoustic device, comprising: a sound emitting part including a housing and a diaphragm accommodated in the housing, the diaphragm being configured to generate sound by vibrating; A hanging structure configured to wear the sound emitting portion at a position near but not blocking an ear canal of a user, wherein, In the wearing state, the inner side surface of the shell facing to the auricle of a user is provided with a sound outlet, the sound outlet is configured to guide out the sound generated by the front side of the vibrating diaphragm to the shell, the other side surfaces of the shell except the inner side surface are provided with pressure relief holes, the pressure relief holes are configured to guide out the sound generated by the rear side of the vibrating diaphragm to the shell, The pressure relief hole comprises an effective ventilation port, the effective ventilation port is provided with a first projection on a reference plane, the reference plane is parallel or tangential with the side surface of the effective ventilation port, the first projection defines a plurality of mutually parallel second characteristic line segments which are perpendicular to the inner side surface and the two ends of which are positioned on the outline of the first projection, the sound outlet is provided with a second projection on the reference plane, one of the two end points of any second characteristic line segment, which is closer to the center of the second projection, is the other reference point, The plurality of other reference points comprise a third reference point and a fourth reference point, the distance from any one of the third reference points to the center of the second projection is smaller than the distance from any one of the fourth reference points to the center of the second projection, the plurality of second characteristic line segments comprise a third sub-line segment passing through the third reference point and a fourth sub-line segment passing through the fourth reference point, the third sub-line segment has a third length, the fourth sub-line segment has a fourth length, and the third length is smaller than the fourth length.
18. The acoustic device of claim 17 wherein a projection of the sound emitting portion on the reference plane has a long axis direction in which the third reference point and the fourth reference point are on the same side of the second projection.
19. The acoustic device of claim 17 wherein a projection of the sound generating portion on the reference plane has a long axis direction, the first projection includes a first side parallel to the long axis direction and a second side disposed opposite the first side, and the third reference point and the fourth reference point are both located on the first side.
20. The acoustic device of claim 19, wherein an angle between the second side and the first side is 0 ° -60 °.

Description

Acoustic device Technical Field The present disclosure relates to the field of acoustic technologies, and in particular, to an acoustic device. Background Along with the development of acoustic output technology, acoustic devices are widely applied to daily life of people, and can be matched with electronic equipment such as mobile phones, computers and the like to provide hearing feast for users. In the acoustic device, a sound outlet is generally provided to output sound from the front side of the diaphragm, and a pressure relief hole is provided to output sound from the rear side of the diaphragm. The design of the pressure relief hole has great influence on the output performance of the earphone. Therefore, it is necessary to provide an acoustic device, which is designed to improve the output effect of the acoustic device by designing the pressure relief hole. Disclosure of Invention The embodiment of the specification provides an acoustic device, which comprises a sound emitting part, a hanging structure and a pressure relief hole, wherein the sound emitting part comprises a shell and a vibrating diaphragm accommodated in the shell, the vibrating diaphragm vibrates to generate sound, the hanging structure is configured to wear the sound emitting part at a position near an ear canal of a user but not blocking the ear canal, in a wearing state, the inner side surface of the shell, which faces towards the auricle of the user, is provided with the sound emitting hole, the sound emitting hole is configured to guide out the sound generated by the front side of the vibrating diaphragm out of the shell, the other side surfaces of the shell, except the inner side surface, are provided with the pressure relief hole, the pressure relief hole is configured to guide out the sound generated by the rear side of the vibrating diaphragm out of the shell, the pressure relief hole comprises an effective ventilation port, the effective ventilation port is provided with a first projection on a reference plane, the reference plane is parallel or tangential to the side surface where the effective ventilation port is located, the reference plane is perpendicular to the inner side surface, the first projection defines a plurality of mutually parallel first characteristic line segments, two ends of the contour of the first projection are located at the inner side surface, the sound emitting hole is provided with a second projection on the reference plane, two ends of the first characteristic line segments are far away from the second projection, one end point of the second characteristic line segments is far from the second projection, the second projection point, the first end point of the first characteristic line segments is provided with a plurality of first point reference points are smaller than the first point reference point and second point length of the first point segment are smaller than the first point of the first point line segment are smaller than the first point length and the first point length point. The embodiment of the specification also provides an acoustic device, which comprises a sound generating part, a hanging structure and a pressure relief hole, wherein the sound generating part comprises a shell and a vibrating diaphragm accommodated in the shell, the vibrating diaphragm vibrates to generate sound, the hanging structure is configured to wear the sound generating part at a position near an ear canal of a user but not blocking the ear canal, in a wearing state, the sound generating hole is arranged on the inner side surface of the shell facing the auricle of the user, the sound generating hole is configured to guide out the sound generated by the front side of the vibrating diaphragm to the shell, the pressure relief hole is arranged on other side surfaces except the inner side surface of the shell, the pressure relief hole is configured to guide out the sound generated by the rear side of the vibrating diaphragm to the shell, the pressure relief hole comprises an effective ventilation port, the effective ventilation port is provided with a first projection on a reference plane, the reference plane is parallel or tangent to the side surface where the effective ventilation port is located, the first projection defines a plurality of mutually parallel second characteristic line segments which are perpendicular to the inner side surface and are both ends of the contour of the first projection, the sound generating hole is provided with a second projection on the reference plane, one of two end points which are closer to the center of the second projection, the second projection is provided with another reference point, the other than the center point of the second projection, the other end points are closer to the center point of the second projection is provided with the second reference point, the third end points are closer to the center point of the second projection is smaller than the center poin