US-20260129367-A1 - DIAPHRAGMS, AIR CONDUCTION SPEAKERS, AND WEARABLE ELECTRONIC DEVICES

US20260129367A1US 20260129367 A1US20260129367 A1US 20260129367A1US-20260129367-A1

Abstract

The present disclosure relates to a diaphragm, an air conduction speaker, and a wearable electronic device. The diaphragm includes a center main body and a folded ring. The folded ring is connected to an outer peripheral edge of the center main body. The folded ring includes two arcuate segments and two connecting segments. The two arcuate segments are spaced apart and disposed opposite to each other. The two connecting segments are spaced apart side-by-side and connected one-to-one between two pairs of opposite ends of the two arcuate segments. Each arcuate segment is provided with a plurality of first pattern grooves spaced apart from each other along an extension direction of the arcuate segment. The plurality of first pattern grooves are arranged in a radial arrangement along a same spiral direction.

Inventors

Guangyuan Zhu
Lei Zhang
Xin Qi
Shanyong Gu

Assignees

Shenzhen Shokz Co., Ltd.

Dates

Publication Date: 20260507
Application Date: 20251229

Claims (20)

1 . A diaphragm, comprising: a center main body; and a folded ring connected to an outer peripheral edge of the center main body, wherein the folded ring includes two arcuate segments and two connecting segments, the two arcuate segments are spaced apart and disposed opposite to each other, and the two connecting segments are disposed spaced apart side-by-side and connected one-to-one between two pairs of opposite ends of the two arcuate segments, wherein each arcuate segment of the two arcuate segments is provided with a plurality of first pattern grooves spaced apart from each other in an extension direction of the arcuate segment, two ends of each first pattern groove extend towards an inner ring and an outer ring of the folded ring, respectively, and the plurality of first pattern grooves are arranged in a radial arrangement along a same spiral direction.
2 . The diaphragm according to claim 1 , wherein a depth of each first pattern groove decreases gradually towards the two ends of the first pattern groove, and a width of a groove opening of the first pattern groove decreases gradually towards the two ends of the first pattern groove.
3 . The diaphragm according to claim 2 , wherein a maximum depth of the first pattern groove is in a range of 0.06 mm˜0.1 mm, and a maximum width of the groove opening of the first pattern groove is in a range of 0.14 mm˜0.18 mm.
4 . The diaphragm according to claim 3 , wherein the maximum depth of the first pattern groove is located at a middle portion of an annular curved portion of the folded ring along a radial direction of the annular curved portion, and the maximum width of the groove opening of the first pattern groove is located at the middle portion of the annular curved portion along the radial direction of the annular curved portion and at a surface of the annular curved portion.
5 . The diaphragm according to claim 1 , wherein a ratio of a depth of each first pattern groove at any position to a width of a groove opening of the first pattern groove is in a range of 0.5˜4.
6 . The diaphragm according to claim 1 , wherein a groove wall of each first pattern groove includes a curved bottom wall and two side walls disposed opposite to each other, the curved bottom wall is connected between the two side walls and is disposed in a curved depression in a direction away from a groove opening of the first pattern groove, and the curved bottom wall and the two side walls are smoothly connected.
7 . The diaphragm according to claim 6 , wherein an angle between the two side walls is in a range of 50° to 120°.
8 . The diaphragm according to claim 6 , wherein an angle between the two side walls is in a range of 60° to 100°.
9 . The diaphragm according to claim 1 , wherein the folded ring includes an inner ring folded edge, an outer ring folded edge, and an annular curved portion connected between the inner ring folded edge and the outer ring folded edge, the inner ring folded edge is connected to the center main body, and the plurality of first pattern grooves are opened in the annular curved portion and located in the annular curved portion at a position corresponding to an arcuate segment of the two arcuate segments, wherein each first pattern groove has a first end proximate to the inner ring folded edge and a second end proximate to the outer ring folded edge, and a distance between the first end and the inner ring folded edge is less than a distance between the second end and the outer ring folded edge.
10 . The diaphragm according to claim 1 , wherein the folded ring has a long axis direction and a short axis direction perpendicular to each other, the two connecting segments extend along the long axis direction and are spaced apart along the short axis direction, on a reference plane defined by the long axis direction and the short axis direction, each first pattern groove has a first projection, and an inner edge of the folded ring has a second projection, the second projection and an extension line of the first projection have an intersection point on the reference plane, and at the intersection point, an angle between the extension line of the first projection and a tangent line of the second projection is greater than or equal to 30° and less than 90°.
11 . The diaphragm according to claim 10 , wherein the angle corresponding to the first pattern groove decreases gradually along a direction from a middle point of an arcuate segment of the two arcuate segments towards each end of the arcuate segment, wherein the angle corresponding to the first pattern groove closer to the middle point of the arcuate segment is larger, and the angle corresponding to the first pattern groove closer to each end of the arcuate segment is smaller.
12 . The diaphragm according to claim 1 , wherein the plurality of first pattern grooves of the two arcuate segments have the same spiral direction.
13 . The diaphragm according to claim 1 , wherein at least one of the two connecting segments is provided with a plurality of second pattern grooves spaced apart from each other, two ends of each second pattern groove extending towards the inner ring and the outer ring of the folded ring, respectively.
14 . The diaphragm according to claim 13 , wherein the folded ring has a long axis direction and a short axis direction perpendicular to each other, the two connecting segments extend along the long axis direction and are spaced apart along the short axis direction, an angle between the short axis direction and an extension direction of a projection of a second pattern groove of the plurality of second pattern grooves on a reference plane defined by the long axis direction and the short axis direction is less than 5°.
15 . The diaphragm according to claim 14 , wherein the plurality of second pattern grooves are divided into at least two groups of second pattern grooves, in each group of second pattern grooves, there is a first interval distance between two second pattern grooves that are adjacent to each other, there is a second interval distance between two adjacent groups of second pattern grooves, the first interval distance is less than the second interval distance, there is a third interval distance between a second pattern groove of the plurality of second pattern grooves and a first pattern groove of the plurality of first pattern grooves that is closest to each other, and the first interval distance is less than the third interval distance.
16 . The diaphragm according to claim 15 , wherein the second pattern grooves in each group are uniformly arranged at the first interval distance in a first portion of the connecting segment, while two groups of second pattern grooves are separated by the second interval distance in a second portion of the connecting segment, wherein a deformation in the first portion is more severe than that in the second portion.
17 . The diaphragm according to claim 15 , wherein the at least two groups of second pattern grooves include two groups, the two groups of second pattern grooves are symmetrically spaced apart at two ends of the connecting segment by the second interval distance in the long axis direction.
18 . An air conduction speaker, comprising a frame, a drive assembly, and a diaphragm, wherein the diaphragm includes: a center main body; and a folded ring connected to an outer peripheral edge of the center main body, wherein the folded ring includes two arcuate segments and two connecting segments, the two arcuate segments are spaced apart and disposed opposite to each other, and the two connecting segments are disposed spaced apart side-by-side and connected one-to-one between two pairs of opposite ends of the two arcuate segments, wherein each arcuate segment of the two arcuate segments is provided with a plurality of first pattern grooves spaced apart from each other in an extension direction of the arcuate segment, two ends of each first pattern groove extend towards an inner ring and an outer ring of the folded ring, respectively, and the plurality of first pattern grooves are arranged in a radial arrangement along a same spiral direction, the drive assembly is at least partially surrounded by the frame, the folded ring is fixed on the frame, and the drive assembly is coupled to the center main body.
19 . A wearable electronic device, comprising a housing and an air conduction speaker, the air conduction speaker being provided in an interior of the housing, wherein the air conduction speaker includes a frame, a drive assembly, and a diaphragm, wherein the diaphragm includes: a center main body; and a folded ring connected to an outer peripheral edge of the center main body, wherein the folded ring includes two arcuate segments and two connecting segments, the two arcuate segments are spaced apart and disposed opposite to each other, and the two connecting segments are disposed spaced apart side-by-side and connected one-to-one between two pairs of opposite ends of the two arcuate segments, wherein each arcuate segment of the two arcuate segments is provided with a plurality of first pattern grooves spaced apart from each other in an extension direction of the arcuate segment, two ends of each first pattern groove extend towards an inner ring and an outer ring of the folded ring, respectively, and the plurality of first pattern grooves are arranged in a radial arrangement along a same spiral direction, the drive assembly is at least partially surrounded by the frame, the folded ring is fixed on the frame, and the drive assembly is coupled to the center main body.
20 . The wearable electronic device according to claim 19 , wherein the wearable electronic device includes a bone conduction speaker, the bone conduction speaker being disposed in the interior of the housing and spaced apart from the air conduction speaker.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of International Patent Application No. PCT/CN2023/140260, filed on Dec. 20, 2023, the contents of which are hereby incorporated by reference. TECHNICAL FIELD The present disclosure relates to the technical field of sound-emitting apparatus, and in particular to a diaphragm, an air conduction speaker, and a wearable electronic device. BACKGROUND With the continuous popularization of wearable electronic devices, they have become indispensable social and entertainment tools in people's daily lives. Wearable electronic devices such as headphones and smart glasses have also been widely used in people's daily life, which can be used in conjunction with cell phones, computers, and other terminal devices to facilitate the provision of auditory feast for users. Thus, how to enhance the working life of wearable electronic devices, such as headphones, is an urgent problem at present SUMMARY The present disclosure provides a diaphragm, comprising: a center main body; and a folded ring connected to an outer peripheral edge of the center main body. The folded ring includes two arcuate segments and two connecting segments, the two arcuate segments are spaced apart and disposed opposite to each other, and the two connecting segments are disposed spaced apart side-by-side and connected one-to-one between two pairs of opposite ends of the two arcuate segments. Each arcuate segment of the two arcuate segments is provided with a plurality of first pattern grooves spaced apart from each other in an extension direction of the arcuate segment, two ends of each first pattern groove extend towards an inner ring and an outer ring of the folded ring, respectively, and the plurality of first pattern grooves are arranged in a radial arrangement along a same spiral direction. In some embodiments, a depth of each first pattern groove decreases gradually towards the two ends of the first pattern groove, and a width of a groove opening of the first pattern groove decreases gradually towards the two ends of the first pattern groove. In some embodiments, a maximum depth of the first pattern groove is in a range of 0.06 mm˜0.1 mm, and a maximum width of the groove opening of the first pattern groove is in a range of 0.14 mm˜0.18 mm. In some embodiments, a ratio of a depth of each first pattern groove at any position to a width of a groove opening of the first pattern groove is in a range of 0.5˜4. In some embodiments, a groove wall of each first pattern groove includes a curved bottom wall and two side walls disposed opposite to each other, the curved bottom wall is connected between the two side walls and is disposed in a curved depression in a direction away from a groove opening of the first pattern groove, and the curved bottom wall and the two side walls are smoothly connected. In some embodiments, an angle between the two side walls is in a range of 50°˜120°, or a range of 60° to 100°. In some embodiments, the folded ring includes an inner ring folded edge, an outer ring folded edge, and an annular curved portion connected between the inner ring folded edge and the outer ring folded edge. The inner ring folded edge is connected to the center main body, and the plurality of first pattern grooves are opened in the annular curved portion and located in the annular curved portion at a position corresponding to an arcuate segment of the two arcuate segments. Each first pattern groove has a first end proximate to the inner ring folded edge and a second end proximate to the outer ring folded edge, and a distance between the first end and the inner ring folded edge is less than a distance between the second end and the outer ring folded edge. In some embodiments, the folded ring has a long axis direction and a short axis direction perpendicular to each other, the two connecting segments extend along the long axis direction and are spaced apart along the short axis direction, on a reference plane defined by the long axis direction and the short axis direction, each first pattern groove has a first projection, and an inner edge of the folded ring has a second projection, the second projection and an extension line of the first projection have an intersection point on the reference plane, and at the intersection point, an angle between the extension line of the first projection and a tangent line of the second projection is greater than or equal to 30° and less than 90°. In some embodiments, the angle corresponding to the first pattern groove decreases gradually along a direction from a middle point of an arcuate segment of the two arcuate segments towards each end of the arcuate segment. The angle corresponding to the first pattern groove closer to the middle point of the arcuate segment is larger, and the angle corresponding to the first pattern groove closer to each end of the arcuate segment is smaller. In some embodiments, the plurality of first pattern grooves of the