Earphone assembly

Abstract

Disclosed is an earphone assembly, comprising: an earphone housing, the earphone housing defining a sound hole; the loudspeaker unit is arranged in the earphone shell and is provided with a loudspeaker front part facing the sound outlet hole and a loudspeaker rear part opposite to the loudspeaker front part; a sheet of sound-transmitting material, the sheet of sound-transmitting material being disposed within the headphone case such that the speaker unit is in front of the sheet of sound-transmitting material and the rear of the speaker thereof is adjacent to the sheet of sound-transmitting material; at least one vent hole, wherein the at least one vent hole is formed on the earphone shell; and a ventilation channel which communicates the at least one ventilation hole to a space behind the sound transmission material sheet, so that the loudspeaker unit is communicated to the outside of the earphone assembly through the sound transmission material sheet, the ventilation channel and the at least one ventilation hole.

Description

Technical Field

[0001] This utility model relates to headphone components. Background Technology

[0002] As consumers' demands for sound quality and / or active noise cancellation (ANC) performance in headphone components continue to rise, true wireless stereo (TWS) and open wireless stereo (OWS) headphones have become widely used in the market. To achieve superior sound quality and / or efficient ANC performance, the need for greater transparency in the rear speaker chamber of headphone components is constantly increasing. This is especially true for open wireless stereo headphones, where the distance between the speaker diaphragm and the wearer's eardrum is relatively large; the rear speaker chamber of the headphone component requires even greater transparency to meet sound quality requirements.

[0003] However, the high permeability of the speaker rear cavity in headphone components also presents a challenge to waterproofing. This high permeability often means the headphones are more susceptible to moisture intrusion. Moisture entering the headphones not only affects the normal operation of their electronic components but can also reduce their lifespan or even damage them, all of which negatively impact the user experience.

[0004] In existing technologies, an opening covered with a waterproof mesh fabric is typically incorporated into the outer shell of the headphone's rear cavity to provide permeability while maintaining waterproof performance. However, this design presents certain challenges in practical applications: ensuring high permeability of the rear cavity usually requires a large opening size and highly permeable mesh fabric material; conversely, achieving effective waterproof performance necessitates a small opening size and low breathability of the mesh fabric material. Because these two requirements conflict, it is difficult to simultaneously meet sound quality and / or noise cancellation performance while ensuring waterproof performance in existing designs.

[0005] Therefore, a new headphone design is needed that provides high transparency of the speaker rear cavity of the headphone assembly while also providing excellent waterproof performance of the headphone assembly. Utility Model Content

[0006] This invention aims to overcome at least some of the aforementioned problems in the prior art.

[0007] According to one aspect of the utility model, an earphone assembly is provided, comprising: an earphone housing defining a sound outlet; a speaker unit disposed within the earphone housing, having a speaker front portion facing the sound outlet and an opposing speaker rear portion; a sound-permeable material sheet disposed within the earphone housing such that the speaker unit is in front of the sound-permeable material sheet and its speaker rear portion is adjacent to the sound-permeable material sheet; at least one vent hole formed on the earphone housing; and a venting channel communicating the at least one vent hole to a space behind the sound-permeable material sheet, thereby communicating the speaker unit to the outside of the earphone assembly through the sound-permeable material sheet, the venting channel, and the at least one vent hole.

[0008] According to one or more embodiments of the present invention, the headphone assembly further includes a waterproof material sheet disposed within the headphone housing. The waterproof material sheet is disposed behind the sound-permeable material sheet, adjacent to and substantially parallel to the sound-permeable material sheet, thereby dividing the space within the headphone housing into a first chamber in front of the sound-permeable material sheet, a sound-permeable space between the sound-permeable material sheet and the waterproof material sheet, and a second chamber behind the waterproof material sheet. The speaker unit is housed in the first chamber. The sound-permeable space communicates with the at least one vent through the venting channel. Electronic devices are disposed in the second chamber.

[0009] According to one or more embodiments of the present invention, the effective sound-transmitting area of ​​the sound-transmitting material sheet is greater than 1 / 2 of the maximum cross-sectional area of ​​the speaker unit, or the effective sound-transmitting area of ​​the sound-transmitting material sheet is greater than 1 / 4 of the maximum cross-sectional area of ​​the headphone body of the headphone assembly.

[0010] According to one or more embodiments of the present invention, the earphone housing includes a first housing member and a second housing member that are fitted together, the sound outlet is formed in the second housing member, and the at least one vent is formed in the first housing member.

[0011] According to one or more embodiments of the present invention, the headphone assembly further includes an inner cover component, which is installed inside the second housing component and arranged coaxially with the speaker unit. The inner cover component has a central opening on the radially outer side and axially rear side of the speaker unit, and the sound-permeable material sheet covers the central opening of the inner cover component.

[0012] According to one or more embodiments of the present invention, the cover member is formed with a boss portion surrounding the central opening, the boss portion defining a shoulder for arranging and positioning the acoustically transparent material sheet, and the headphone assembly further includes a waterproof material sheet disposed on the boss portion, such that the waterproof material sheet is parallel to and spaced apart from the acoustically transparent material sheet.

[0013] According to one or more embodiments of the present invention, the boss portion further defines at least one ventilation channel portion corresponding to the at least one ventilation hole, and the earphone assembly further includes at least one bushing portion corresponding to the at least one ventilation hole. The bushing portion is installed in the first housing member and forms a bushing portion channel. One end of the bushing portion channel communicates with the corresponding ventilation hole, and the other end communicates with the corresponding ventilation channel portion of the inner cover member, thereby defining the ventilation channel.

[0014] According to one or more embodiments of the present invention, the bushing portion is an integrally molded part made of an elastomeric material.

[0015] According to one or more embodiments of the present invention, the sound-permeable sheet is a woven mesh.

[0016] According to one or more embodiments of the present invention, a hydrophobic layer is disposed on the acoustically transparent sheet.

[0017] According to one or more embodiments of the present invention, the at least one vent includes two vents formed on the earphone housing, the two vents being spaced apart from each other and forming an angle greater than 90 degrees with respect to the earphone axis.

[0018] According to one or more embodiments of the present invention, the ventilation channel has a tortuous path, including a first horizontal channel segment, a vertical channel segment, and a second horizontal channel segment connected end to end.

[0019] According to one or more embodiments of the present invention, the earphone assembly is an OWS earphone or a TWS earphone. Attached Figure Description

[0020] Figure 1 An earphone assembly according to one or more embodiments of the present invention is shown;

[0021] Figure 2 yes Figure 1 An exploded view of the headphone components shown;

[0022] Figure 3A It is along Figure 1 The sectional view cut off by arrow AA. Figure 3B yes Figure 3A A magnified view of a portion of the view. Figure 3C Is with Figure 3B Similar views, but from different perspectives;

[0023] Figures 4A-4E The assembly process of an earphone assembly according to one or more embodiments of the present invention is shown. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below with reference to the accompanying drawings. The same or similar reference numerals in the figures denote the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. In the description of this invention, it should be understood that the terms “center,” “longitudinal,” “lateral,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In this document, the term "axis" refers to the axis or central axis x of the headphone body of the headphone assembly. The terms "axial" or "axial direction" refer to the direction along the axis of the headphone assembly; "circumferential" refers to the direction around the axis x; "radial" or "radial direction" refers to a direction generally perpendicular to the axis, pointing towards or away from the axis; "radial inward" or "radial inner" refers to a component, part, position, or direction relatively close to the axis; and "radial outward" or "radial outer" refers to a component, part, position, or direction relatively away from the axis. The term "front" or "front portion" refers to the direction in which the sound outlet of the headphone assembly or the diaphragm of the speaker points; and the term "rear" or "rear portion" refers to a direction or portion away from the sound outlet of the headphone assembly or the diaphragm of the speaker.

[0027] This invention provides an earphone assembly, comprising: an earphone shell, a speaker unit, and a sound-transparent material sheet. The sound-transparent material sheet is disposed behind the speaker unit and adjacent to the rear portion of the speaker unit. The earphone assembly further includes at least one vent hole and a vent channel. The vent hole is formed on the earphone shell, and the vent channel connects the at least one vent hole to a space behind the sound-transparent material sheet, thereby allowing the speaker unit to communicate with the outside of the earphone assembly through the sound-transparent material sheet, the vent channel, and the at least one vent hole. According to one or more embodiments of this invention, the effective sound-transparent area of ​​the sound-transparent material sheet is greater than 1 / 2 of the maximum cross-sectional area of ​​the speaker unit, or the effective sound-transparent area of ​​the sound-transparent material sheet is greater than 1 / 4 of the maximum cross-sectional area of ​​the earphone body of the earphone assembly.

[0028] Because of the large effective sound-transmitting area of ​​the acoustically transparent material sheet, materials with low acoustic transmittance or high acoustic impedance can be selected while still ensuring high overall transparency and high sound quality of the headphone assembly. Furthermore, using acoustically transparent materials with low acoustic transmittance or high acoustic impedance ensures good waterproof performance, thus improving the waterproof performance of the headphone assembly.

[0029] According to one or more embodiments of the present invention, the ventilation channel has a tortuous path, including a first horizontal channel segment, a vertical channel segment, and a second horizontal channel segment connected end to end.

[0030] The bends in the ventilation channels can enhance the water resistance or waterproofing of the headphone components. Specifically, these bends, especially their relatively long paths and right-angle turns between horizontal and vertical channel sections, can block or prevent water from seeping into the headphone components, or disperse and mitigate the impact of incoming water flow.

[0031] According to one or more embodiments of the present invention, the headphone assembly includes two vents formed on the headphone housing, the two vents being spaced apart from each other and forming an angle greater than 90 degrees with respect to the headphone axis.

[0032] Due to the large angle between the two vents, if water or liquid enters the headphone assembly through one of the vents during use, it can flow out under gravity through the lower vent channel and vent. This configuration reduces the accumulation of water or liquid inside the headphone assembly.

[0033] Figure 1 An earphone assembly 100 according to one or more embodiments of the present invention is shown. In the embodiment shown, the earphone assembly 100 is an ear-hook type earphone, including an earphone body 102 and an ear hook portion 106. The earphone body 102 is provided with a speaker and a sound outlet. Figure 1(Not shown in the figure). The ear hook portion 106 includes an ear hook body 106a and a battery compartment 106b. The ear hook body 106a is connected to the earphone body 102 at its first end and to the battery compartment 106b at its second end. In the working or wearing position of the earphone assembly 100, the ear hook portion 106 of the earphone assembly 100 mates with the wearer's auricle to help position the earphone body 102 of the earphone assembly 100 relative to the wearer's ear, for example, aligning the sound outlet of the earphone body 102 with the wearer's ear canal. When the earphone assembly 100 is in operation, the sound emitted by the speaker in the earphone body 102 is transmitted to the wearer's ear canal through the earphone sound outlet. In the embodiment shown, the earphone assembly 100 is an ear hook earphone. The present invention is not limited thereto; in one or more other embodiments according to the present invention, the earphone assembly 100 may be a TWS earphone, an in-ear earphone, a semi-in-ear earphone, an earbud, a headphone, or other types of earphones.

[0034] Figure 2 yes Figure 1 An exploded view of the headphone assembly 100 is shown. As shown, the headphone body 102 includes a first housing member or rear housing member 110 and a second housing member or front housing member 120. The first housing member or rear housing member 110 and the second housing member or front housing member 120 are fitted together to form the headphone housing of the headphone body 102. Two vent holes 112 and 114 spaced apart in the circumferential direction are formed on the first housing member or rear housing member 110 (see figure). Figure 1 In one or more other embodiments of the present invention, the headphone body may not be limited to the front and rear shell structure shown in the figure, but may employ any suitable headphone shell structure. The headphone body 102 also includes a speaker unit 130, an inner cover 140, a sound-permeable material sheet 150, a waterproof material sheet 160, and two bushing portions 170 disposed within the headphone shell.

[0035] Figure 3A It is along Figure 1 The sectional view cut off by arrow AA. Figure 3B yes Figure 3A A magnified view of a portion of the view. Figure 3C Is with Figure 3BSimilar views, but from a different perspective. As shown, the headphone body 102 has an axis x. A first housing member 110 and a second housing member 120 of the headphone body 102 are fitted together to form the headphone housing of the headphone body 102. The second housing member 120 has a sound outlet 122. A structure suitable for receiving a speaker unit 130 is formed within the second housing member 120. The speaker unit 130 is mounted within the second housing member 120, and the front portion 132 (e.g., diaphragm) of the speaker unit 130 is adjacent to and faces the sound outlet 122. When the headphone assembly 100 is in operation, the sound emitted by the speaker unit 130 within the headphone body 102 is emitted through the sound outlet 122.

[0036] The second housing member 120 also has a structure suitable for receiving the inner cover member 140 therein. The inner cover member 140 is mounted within the second housing member 120, substantially coaxially arranged with the speaker unit 130, and located radially outward and axially rearward or rearward of the speaker unit 130. Figure 2 As most clearly shown, the inner cover 140 is annular and has a central opening 142. The cover 140 also has a boss 146 surrounding the central opening 142. The boss 146 forms a shoulder 144 for placing and positioning the sound-permeable material sheet 150. The boss 146 also defines two circumferentially spaced ventilation channels 148. Figure 3B As most clearly shown, the central opening 142 of the inner cover 140 is concentric with the speaker unit 130. The size of the central opening 142 of the inner cover 140 may be larger than or slightly larger than the size of the rear portion 134 (e.g., magnet assembly) of the speaker unit 130. The rear portion 134 of the speaker unit 130 may be adjacent to or slightly inside the central opening 142 of the inner cover 140. In one or more embodiments, the distance by which the rear portion 134 of the speaker unit 130 enters the central opening 142 of the inner cover 140 is less than or equal to 1 mm. Thus, the acoustically transparent material sheet 150 positioned on the shoulder portion 144 of the inner cover 140 can be spaced very small from the rear portion 134 of the speaker unit 130, for example, less than 1 mm to 1-2 mm.

[0037] A waterproof sheet 160 is positioned on the protrusion 146 of the inner cover 140, parallel to and spaced apart from the acoustically transparent sheet 150 placed on the shoulder 144 of the inner cover 140, thereby defining an acoustically transparent space 152 between them. The speaker unit 130 is acoustically connected to the acoustically transparent space 152 via the acoustically transparent sheet 150. It can be considered that the acoustically transparent sheet 150 and the waterproof sheet 160 divide the internal space of the headphone body 102 into three parts: a speaker chamber or first chamber 128 axially forward of the acoustically transparent sheet 150, the acoustically transparent space 152 between the acoustically transparent sheet 150 and the waterproof sheet 160, and a second chamber 118 axially rearward of the waterproof sheet 160. The speaker chamber or first chamber 128 is mainly used to house the speaker unit 130, and the second chamber 118 is mainly used to house the PCB board or electronic components (not shown) of the headphone assembly. The acoustic space 152 is primarily used for external acoustic communication with the headphone assembly 100. This configuration provides a very compact headphone structure.

[0038] Each of the two bushing portions 170 has a bushing portion channel 172 (see Figure 2 The first housing member 110 is configured to receive two bushing portions 170. Each of the two bushing portions 170 is mounted to the first housing member 110 such that the rear ends of the bushing portion channels 172 of the two bushing portions 170 ( Figure 3B The upper end of the two bushing portions 170 is connected to two vent holes 112 and 114 on the first housing part 110. The front end of the bushing portion channel 172 of the two bushing portions 170 is connected to the two vent holes 112 and 114 on the first housing part 110. Figure 3B The lower end of the vent is aligned and communicates with the corresponding acoustic opening 162 of the impermeable material sheet 160 and the corresponding venting channel 148 of the inner cover 140. This defines a ventilation channel from the two vents 112, 114 of the first housing 110 to the sound-permeable space 152 between the sound-permeable material sheet 150 and the impermeable material sheet 160. In the embodiment shown, the ventilation channel from the vent 112 to the sound-permeable space 152 has a tortuous path, including a first horizontal channel segment 112a, a vertical channel segment 112b, and a second horizontal channel segment 112c connected end to end. Similarly, the ventilation channel from the vent 114 to the sound-permeable space 152 has a tortuous path, including a first horizontal channel segment 114a, a vertical channel segment 114b, and a second horizontal channel segment 114c connected end to end.

[0039] In one or more embodiments according to the present invention, the bushing portion 170 is made of an elastomeric material, such as silicone rubber. The bushing portion 170 made of an elastomeric material provides a seal without the need for additional sealing rings or seals. Furthermore, the bushing portion 170 made of an elastomeric material also allows for or absorbs some dimensional deviations or assembly errors within the headphone assembly.

[0040] As shown in the figure, the speaker unit 130 or the rear part of the speaker unit 130 is connected or acoustically connected to the sound-transparent space 152 through the sound-transparent material sheet 150, and the sound-transparent space 152 is further connected to the outside of the headphone assembly 100 through the ventilation channel from the vent holes 112, 114 to the sound-transparent space 152. That is to say, the speaker unit 130 or the rear part of the speaker unit 130 is connected to the outside of the headphone assembly 100 through the sound-transparent material sheet 150, the sound-transparent space 152, the ventilation channel from the vent holes 112, 114 to the sound-transparent space 152, and the vent holes 112, 114.

[0041] like Figures 3A-3B As clearly shown, the effective sound-transmitting area of ​​the sound-transmitting material sheet 150 (i.e., the effective sound-transmitting area between the speaker unit 130 and the sound-transmitting space 152) is large. In one or more embodiments of the present invention, the effective sound-transmitting area of ​​the sound-transmitting material sheet 150 may be equal to or slightly larger than the cross-sectional area of ​​the rear portion 134 of the speaker unit 130. In another one or more embodiments of the present invention, the effective sound-transmitting area of ​​the sound-transmitting material sheet 150 may be greater than 1 / 2, 2 / 3, or 3 / 4 of the cross-sectional area of ​​the rear portion 134 of the speaker unit 130. In another one or more embodiments of the present invention, the effective sound-transmitting area of ​​the sound-transmitting material sheet 150 may be greater than 1 / 4, 1 / 3, 1 / 2, or 3 / 4, or even higher, of the maximum cross-sectional area of ​​the speaker unit 130. In another one or more embodiments of the present invention, the effective sound-transmitting area of ​​the sound-transmitting material sheet 150 may be greater than 1 / 4 or 1 / 3, or even higher, of the maximum cross-sectional area of ​​the earphone body 102. The cross-sectional area referred to here is the cross-sectional area of ​​the rear part 134 of the speaker unit 130, the speaker unit 130, or the headphone body 102 on a plane parallel to the sound-transmitting material sheet 150.

[0042] Because the sound-permeable material sheet 150 has a large effective sound-permeable area, a sound-permeable material with low acoustic transmittance or high acoustic impedance can be selected while still ensuring the overall high transparency of the headphone assembly 100. Furthermore, selecting a sound-permeable material with low acoustic transmittance or high acoustic impedance ensures good waterproof performance, improving the waterproof performance of the headphone assembly 100. In one or more embodiments of the present invention, the sound-permeable material sheet 150 can be made of woven mesh, non-woven mesh, or other suitable sound-permeable materials. In one or more embodiments of the present invention, the sound-permeable material sheet 150 is further coated with a hydrophobic coating to further improve the waterproof performance of the headphone assembly 100.

[0043] As shown in the figure, the ventilation channel from the vent 112 to the sound-permeable space 152 has a tortuous path, including a first horizontal channel segment 112a, a vertical channel segment 112b, and a second horizontal channel segment 112c connected end to end. Similarly, the ventilation channel from the vent 114 to the sound-permeable space 152 has a tortuous path, including a first horizontal channel segment 114a, a vertical channel segment 114b, and a second horizontal channel segment 114c connected end to end. This tortuous path can enhance the water resistance or waterproofness of the headphone assembly 100. Specifically, this tortuous path, especially its relatively long path and the right-angle turn between the horizontal and vertical channel segments, can block water or prevent water from seeping into the interior of the headphone assembly 100, or disperse and mitigate the impact of incoming water flow. This tortuous structure can prevent or reduce water from entering the sound-permeable space 152 inside the headphone assembly 100. Even if water enters the acoustically transparent space 152 inside the headphone assembly 100, the impact force of the water flow is dispersed and slowed down by the bending path, preventing it from penetrating the acoustically transparent material sheet 150 and entering the speaker chamber or the first chamber 128. Simultaneously, the waterproof material sheet 160 prevents water from the acoustically transparent space 152 from entering the second chamber 118. In one or more embodiments, the waterproof material sheet 160 is a metal sheet.

[0044] As shown in the figure, the two vents 112 and 114 on the first housing 110 of the headphone assembly 100 are spaced apart from each other. In one or more embodiments according to the present invention, the two vents 112 and 114 are spaced apart by approximately 135 degrees around the axis x of the headphone body 102. In one or more other embodiments, the two vents 112 and 114 may be spaced apart by other angles, such as angles greater than 90 degrees, such as approximately 120 degrees, approximately 160 degrees, approximately 180 degrees, etc. Due to the large angle between the two vents 112 and 114, during the use of the headphone assembly 100, such as when worn, there will generally be one vent 112 or 114 below the ventilation space 152. Therefore, if water or liquid enters the ventilation space 152 from one of the vents 112 or 114 through the corresponding ventilation channel, the water or liquid entering the ventilation space 152 can flow out from the lower vent 112 or 114 under the action of gravity. This configuration reduces the accumulation of water or liquid in the ventilation space 152, preventing accumulated water from entering the speaker chamber or the first chamber 128 through the sound-permeable material sheet 150. As shown, no mesh or sponge materials are used in the vents 112, 114 and the corresponding ventilation channels, or in the ventilation space 152. This ensures that the headphone assembly 100 can smoothly drain water or liquid and maintains its high permeability. In one or more other embodiments according to this invention, the headphone body 102 of the headphone assembly 100 may have a different number of vents, such as one or three vents.

[0045] Figures 4A-4E The assembly process of an earphone assembly 100 according to one or more embodiments of the present invention is illustrated. A structure suitable for receiving a speaker unit 130 is formed within a second housing 120. The first step of the assembly process is to mount the speaker unit 130 into the corresponding structure within the second housing 120, such as... Figure 4A As shown.

[0046] The second housing member 120 also has a structure suitable for receiving the inner cover member 140 therein. The second step of the assembly process is to install the inner cover member 140 into the corresponding structure within the second housing member 120, such as... Figure 4B As shown. At this time, the inner cover 140 is basically coaxially arranged with the speaker unit 130, and is located radially outward and axially rearward or rearward of the speaker unit 130. The rear portion 134 of the speaker unit 130 can be aligned with the central opening 142 of the inner cover 140, and is adjacent to or slightly inside the central opening 142 of the inner cover 140.

[0047] The third step in the assembly process is to position the sound-permeable material sheet 150 onto the shoulder 144 of the inner cover component 140, such as... Figure 4C As shown.

[0048] The fourth step in the assembly process is to position the waterproof sheet 160 onto the boss portion 146 of the inner cover body 140, such as... Figure 4D As shown. At this time, the waterproof material sheet 160 positioned on the boss portion 146 of the inner cover body 140 and the sound-permeable material sheet 150 positioned on the shoulder portion 144 of the inner cover body 140 are parallel and spaced apart from each other, thereby defining a sound-permeable space 152 between them (see Figure 3B-3C The loudspeaker unit 130 is acoustically connected to the acoustically transparent space 152 through the acoustically transparent material sheet 150.

[0049] The first housing member 110 is configured to receive two bushing portions 170. The fifth step of the assembly process is to install each of the two bushing portions 170 onto the first housing member 110. At this time, the rear ends of the bushing portion channels 172 of the two bushing portions 170 ( Figure 3B The upper end of the is aligned with and connected to the two vent holes 112 and 114 on the first housing part 110.

[0050] The sixth step in the assembly process is to assemble the first housing part 110 and the second housing part 120 together to complete the assembly of the earphone body 102 of the earphone assembly 100. The structure of the assembled earphone body 102 can be seen in [reference needed]. Figure 3B At this time, the front end of the bushing channel 172 of the two bushing portions 170 ( Figure 3BThe lower end of the 110 is aligned and communicates with the corresponding acoustic opening 162 of the impermeable material sheet 160 and the corresponding venting channel 148 of the inner cover 140. This defines a venting channel from the two vents 112, 114 of the first housing 110 to the sound-permeable space 152 between the sound-permeable material sheet 150 and the impermeable material sheet 160. In one or more embodiments, the bushing 170 is made of an elastomeric material (e.g., silicone rubber). Such a bushing 170 can automatically provide a seal when the first housing 110 and the second housing 120 are mated together without the need for additional sealing rings or seals. Furthermore, the bushing 170 made of an elastomeric material can also allow or absorb some dimensional deviations or assembly errors of the components within the first housing 110 and the second housing 120. Figures 4A-4E As shown, the headphone assembly 100 has the technical advantage of simple assembly.

[0051] This utility model can be implemented in the following ways:

[0052] Project 1: An earphone assembly, comprising: an earphone housing defining a sound outlet;

[0053] A speaker unit disposed within the earphone housing, having a front speaker portion facing the sound outlet and a rear speaker portion opposite to it; a sound-permeable material sheet disposed within the earphone housing such that the speaker unit is in front of the sound-permeable material sheet and its rear speaker portion is adjacent to the sound-permeable material sheet; at least one vent hole formed on the earphone housing; and a venting channel connecting the at least one vent hole to a space behind the sound-permeable material sheet, thereby allowing the speaker unit to communicate with the outside of the earphone assembly through the sound-permeable material sheet, the venting channel, and the at least one vent hole.

[0054] Project 2: The headphone assembly according to Project 1 further includes a waterproof material sheet disposed within the headphone housing. The waterproof material sheet is disposed behind the sound-permeable material sheet, adjacent to and substantially parallel to the sound-permeable material sheet, thereby dividing the space within the headphone housing into a first chamber in front of the sound-permeable material sheet, a sound-permeable space between the sound-permeable material sheet and the waterproof material sheet, and a second chamber behind the waterproof material sheet. The speaker unit is housed in the first chamber. The sound-permeable space communicates with the at least one vent through the venting channel. Electronic devices are disposed in the second chamber.

[0055] Item 3: In any one of Items 1-2, the effective sound-transmitting area of ​​the sound-transmitting material sheet is greater than 1 / 2 of the maximum cross-sectional area of ​​the speaker unit, or the effective sound-transmitting area of ​​the sound-transmitting material sheet is greater than 1 / 4 of the maximum cross-sectional area of ​​the headphone body of the headphone assembly.

[0056] Item 4: The headphone assembly according to any one of Items 1-3, wherein the headphone housing includes a first housing member and a second housing member mating together, the sound outlet is formed in the second housing member, and the at least one vent is formed in the first housing member.

[0057] Item 5: The headphone assembly according to any one of Items 1-4 further includes an inner cover, which is installed within the second housing and arranged coaxially with the speaker unit, and has a central opening on the radially outer side and axially rearward side of the speaker unit, the sound-permeable material sheet covering the central opening of the inner cover.

[0058] Item 6: The headphone assembly according to any one of Items 1-5, wherein the cover member has a boss portion surrounding the central opening, the boss portion defining a shoulder for arranging and positioning the acoustically transparent material sheet, and the headphone assembly further includes a waterproof material sheet disposed on the boss portion, such that the waterproof material sheet is parallel to and spaced apart from the acoustically transparent material sheet.

[0059] Item 7: The headphone assembly according to any one of Items 1-6, wherein the boss portion further defines at least one ventilation channel portion corresponding to the at least one vent hole, the headphone assembly further includes at least one bushing portion corresponding to the at least one vent hole, the bushing portion being installed in the first housing member and forming a bushing portion channel, one end of the bushing portion channel communicating with the corresponding vent hole and the other end communicating with the corresponding vent channel portion of the inner cover member, thereby defining the vent channel.

[0060] Item 8: The headphone assembly according to any one of Items 1-7, wherein the bushing portion is a one-piece molded part made of an elastomeric material.

[0061] Item 9: The headphone assembly according to any one of Items 1-8, wherein the acoustically transparent sheet is a woven mesh.

[0062] Item 10: The headphone assembly according to any one of Items 1-9, wherein a hydrophobic layer is disposed on the acoustically transparent sheet.

[0063] Item 11: The headphone assembly according to any one of Items 1-10, wherein the at least one vent includes two vents formed on the headphone housing, the two vents being spaced apart from each other and forming an angle greater than 90 degrees with respect to the headphone axis.

[0064] Item 12: The headphone assembly according to any one of Items 1-11, wherein the ventilation channel has a tortuous path, including a first horizontal channel segment, a vertical channel segment and a second horizontal channel segment connected end to end.

[0065] Item 13: The headphone assembly according to any one of Items 1-12, wherein the headphone assembly is an OWS headphone or a TWS headphone.

[0066] The above description is merely an exemplary embodiment used to illustrate the principle of this utility model and is not intended to limit the scope of protection of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also within the scope of protection of this utility model.

Claims

1. An earphone assembly, characterized by comprising: an earphone housing defining a sound hole; a speaker unit arranged within the earphone housing having a speaker front facing the sound hole and an opposite speaker back; a sheet of acoustic transparent material arranged within the earphone housing such that the speaker unit is in front of the sheet of acoustic transparent material with its speaker back adjacent to the sheet of acoustic transparent material; at least one vent hole formed on the earphone housing; and a vent passage communicating the at least one vent hole to a space behind the sheet of acoustic transparent material, whereby the speaker unit is in communication with the outside of the earphone assembly through the sheet of acoustic transparent material, the vent passage and the at least one vent hole. Further comprising a sheet of water impermeable material arranged within the earphone housing, the sheet of water impermeable material being arranged behind the sheet of acoustic transparent material, adjacent to and substantially parallel to the sheet of acoustic transparent material, thereby dividing the space within the earphone housing into a first chamber in front of the sheet of acoustic transparent material, an acoustic transparent space between the sheet of acoustic transparent material and the sheet of water impermeable material, and a second chamber behind the sheet of water impermeable material, the speaker unit being housed in the first chamber, the acoustic transparent space being in communication with the at least one vent hole through the vent passage, and the second chamber having electronic devices arranged therein.

2. The earphone assembly of claim 1, wherein The effective acoustic transparent area of the sheet of acoustic transparent material is greater than 1 / 2 of the maximum cross-sectional area of the speaker unit, or the effective acoustic transparent area of the sheet of acoustic transparent material is greater than 1 / 4 of the maximum cross-sectional area of the earphone body of the earphone assembly.

3. The earphone assembly of claim 1, wherein The earphone housing comprises a first housing part and a second housing part fitted together, the sound hole being formed on the second housing part, and the at least one vent hole being formed on the first housing part.

4. The earphone assembly of claim 1, wherein Further comprising an inner cover part, 5. The earphone assembly of claim 4, wherein the inner cover part being mounted within the second housing part, arranged coaxially with the speaker unit, and radially outwardly and axially rearwardly of the speaker unit, the inner cover part having a central opening, the sheet of acoustic transparent material covering the central opening of the inner cover part.

6. The earphone assembly of claim 5, wherein the cover part is formed with a boss portion surrounding the central opening, the boss portion defining a shoulder for arranging and positioning the sheet of acoustic transparent material, the earphone assembly further comprises a sheet of water impermeable material arranged on the boss portion, whereby the sheet of water impermeable material is parallel to and spaced apart from the sheet of acoustic transparent material.

7. The earphone assembly of claim 6, wherein the boss portion further defines at least one vent passage portion corresponding to the at least one vent hole, the earphone assembly further comprises at least one bushing portion corresponding to the at least one vent hole, the bushing portion being mounted in the first housing part and formed with a bushing portion passage, one end of the bushing portion passage being in communication with the corresponding vent hole and the other end being in communication with the corresponding vent passage portion of the inner cover part, thereby defining the vent passage. the bushing portion is a one-piece member made of elastomeric material.

8. The earphone assembly of claim 7, wherein ​ 9. The earphone assembly of any one of claims 1-8, wherein The sheet of sound-transmissive material is a woven mesh.

10. The earphone assembly of any one of claims 1-8, wherein A hydrophobic layer is arranged on the sheet of sound-transmissive material.

11. The earphone assembly of any one of claims 1-8, wherein The at least one vent hole includes two vent holes formed on the earphone shell, the two vent holes are spaced apart from each other, and an angle formed with respect to an earphone axis is greater than 90 degrees.

12. The earphone assembly of any one of claims 1-8, wherein The vent passage has a bending path, including a first horizontal passage segment, a vertical passage segment, and a second horizontal passage segment connected in sequence.

13. The earphone assembly of any one of claims 1-8, wherein The earphone assembly is an OWS earphone or a TWS earphone.

Images