Open type wearable earphone with resonance structure
By setting a resonant structure in the rear cavity of the open-back wearable headphones, the leakage sound is canceled out by using an acoustic resonant cavity, thus solving the sound leakage problem and reducing sound leakage without affecting the sound quality, thereby improving privacy protection.
Patent Information
- Application Number
- CN202522406846.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-13
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-11-13
AI Technical Summary
Existing open-back wearable headphones struggle to effectively reduce sound leakage without compromising sound quality, especially when used in public places, which can easily lead to privacy breaches.
A resonant structure, including a sealed cavity and a conduit, is set in the rear cavity of the headphones. The acoustic resonant cavity cancels out the leakage sound in opposite phase, forming a damping effect. This is independent of the main sound output path and reduces sound leakage.
Without affecting normal sound production efficiency and quality, it effectively reduces sound leakage, improves privacy protection, and maintains comfort and audio quality.
Smart Images
Figure CN223693989U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the earphone technical field, especially relates to an open wearable earphone with resonance structure. BACKGROUND
[0002] Open wearable stereo (OWS) earphones have been widely favored by consumers in recent years due to their comfort, lightness, and ability to allow the wearer to perceive the surrounding environment. Compared with traditional closed earphones, OWS earphones are more comfortable to wear for a long time, suitable for sports and outdoor use, and can improve the safety of the wearer.
[0003] However, the open design also brings the problem of audio leakage, especially in public places such as elevators, libraries, etc. People around may hear the music or conversation content transmitted from the earphone, thereby causing a security risk of privacy leakage. In the prior art, the sound leakage is often reduced by reducing the sound outlet hole on the front side of the earphone shell; however, the sound outlet hole is reduced, which will affect the normal sound quality.
[0004] Therefore, the prior art still needs to be improved and developed. CONTENT OF THE UTILITY MODEL
[0005] The technical problem to be solved by the present application is to provide an open wearable earphone with resonance structure to reduce sound leakage without affecting normal sound quality, in view of the above-mentioned defects of the prior art.
[0006] The technical solution adopted by the present application to solve the technical problem is as follows:
[0007] An open wearable earphone with resonance structure comprises:
[0008] An earphone shell having a receiving cavity;
[0009] A loudspeaker arranged in the earphone shell and separating the receiving cavity into a front cavity and a rear cavity; the earphone shell is provided with a sound leakage hole, and the sound leakage hole is in communication with the rear cavity;
[0010] A resonance structure arranged in the rear cavity and arranged in a staggered manner with the sound leakage hole; the resonance structure has a sealed cavity, and the resonance structure is provided with a sound resistance adjusting hole, and the sound resistance adjusting hole is in communication with the sealed cavity and the rear cavity, respectively.
[0011] The open wearable earphone with resonance structure, wherein the resonance structure comprises:
[0012] A closed shell arranged in the rear cavity; the sound resistance adjusting hole is arranged on the closed shell;
[0013] At least one conduit is disposed in the closed housing; one end of the conduit is sealed, and the other end has an open end.
[0014] The open wearable earphone with resonance structure, wherein the closed housing comprises:
[0015] A housing; the housing has an opening, and an open end of the housing is connected with the earphone shell to enclose the sealed cavity between the housing and the earphone shell.
[0016] The open wearable earphone with resonance structure, wherein the conduit is fitted with the earphone shell, and one end of the conduit away from the open end is fitted with the housing to form a sealed end.
[0017] The open wearable earphone with resonance structure, wherein the housing and the earphone shell are integrally formed.
[0018] The open wearable earphone with resonance structure, wherein the closed housing comprises:
[0019] A housing; the housing has an opening;
[0020] A bottom plate connected with the open end of the housing and enclosing the sealed cavity.
[0021] The open wearable earphone with resonance structure, wherein the bottom plate or the housing is bonded with the earphone shell.
[0022] The open wearable earphone with resonance structure, wherein the open end is arranged in a staggered manner with the sound resistance adjusting hole.
[0023] The open wearable earphone with resonance structure, wherein the sound resistance adjusting hole is arranged opposite to the loudspeaker.
[0024] The open wearable earphone with resonance structure, wherein the earphone shell comprises:
[0025] A front shell; the front shell is provided with a sound outlet hole;
[0026] A rear shell connected with the front shell and enclosing the receiving cavity; the loudspeaker is located at the connection between the front shell and the rear shell.
[0027] Beneficial effects: Compared with the prior art, the application does not limit the sound energy from the normal sound path, but sets a resonance structure in the back cavity, the main sound output path (sound hole) and the acoustic path of the sealed cavity are independent of each other, the normal sound efficiency of the earphone can be fully reserved, and the leaked sound is damped in the propagation process through acoustic resonance, and is counteracted in phase, thereby reducing the sound leakage without interrupting the normal sound transmission and reducing the normal sound quality. BRIEF DESCRIPTION OF DRAWINGS
[0028] Figure 1 is the first view of the open wearable earphone with a resonance structure in the application;
[0029] Figure 2 is the second view of the open wearable earphone with a resonance structure in the application;
[0030] Figure 3 is a schematic view of the internal structure of the open wearable earphone with a resonance structure in the application;
[0031] Figure 4 is a schematic view of the internal structure of the open wearable earphone with a resonance structure in the first embodiment of the application;
[0032] Figure 5 is a schematic view of the internal structure of the open wearable earphone with a resonance structure in the second embodiment of the application. DETAILED DESCRIPTION
[0033] In order to make the purpose, technical scheme and effect of the application more clear and explicit, the application will be further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the application and not to limit the application.
[0034] Those skilled in the art can understand that, unless specifically stated, the singular forms "a", "an" and "the" used herein also include the plural forms. It should be further understood that the use of the word "comprise" in the specification of the application means that the features, integers, steps, operations, elements and / or components exist, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we say that an element is "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there can be intermediate elements. In addition, the "connection" or "coupling" used herein can include wireless connection or wireless coupling. The phrase "and / or" used herein includes all or any single unit and all combinations of the associated listed items.
[0035] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that the terms, such as those defined in a general dictionary, should be interpreted as having a meaning consistent with the meaning in the context of the relevant art and should not be interpreted in an idealized or overly formal sense unless specifically so defined herein.
[0036] The inventors of the present application have found through research that, due to the advantages of comfort, lightness and the ability to allow the wearer to perceive the surrounding environment, open wearable stereo earphones (OWS) in the prior art have been widely favored by consumers in recent years. However, they also bring the problem of audio leakage, especially in public places such as elevators, libraries, etc. People around may hear the music or conversation content emitted from the earphones, thereby causing a safety hazard of privacy leakage. In the prior art, the sound leakage is often reduced by reducing the sound outlet hole on the front side of the earphone shell. However, the sound outlet hole is the main passage for sound to enter the external environment. Reducing the sound outlet hole is similar to covering the speaker outlet. Although the sound leakage is reduced, the sound resistance is increased and the normal sound emission energy is inhibited, the high-frequency response is decreased, the sound is dull, and the normal sound emission efficiency, volume and frequency response are all adversely affected, thereby causing the sound emission quality to decrease.
[0037] To solve the above technical problems, the present application provides an open wearable earphone with a resonance structure, which comprises: an earphone shell 1 (as shown in Figure 1 、 Figure 2 、 Figure 3 and Figure 5 ), a speaker 2 (as shown in Figure 3 、 Figure 4 and Figure 5 ), and a resonance structure 3 (as shown in Figure 3 、 Figure 4 and Figure 5 ); wherein the earphone shell 1 has a receiving cavity; the speaker 2 is arranged in the earphone shell 1 and divides the receiving cavity into a front cavity 111 and a rear cavity 121 (as shown in Figure 3 、 Figure 4 and Figure 5 ); the earphone shell 1 is provided with a sound leakage hole 101, the sound leakage hole 101 communicates with the rear cavity 121; the resonance structure 3 is arranged in the rear cavity 121 and is arranged in a staggered manner with the sound leakage hole 101; the resonance structure 3 has a sealed cavity 301, and the resonance structure 3 is provided with a sound resistance adjusting hole 302, the sound resistance adjusting hole 302 respectively communicates with the sealed cavity 301 and the rear cavity 121.
[0038] Specifically, the speaker 2 divides the receiving cavity into the front cavity 111 and the rear cavity 121 in the receiving cavity, and the sound outlet hole 102 (as shown in Figure 1、 Figure 3 、 Figure 4 and Figure 5 The sound leakage hole 101 is arranged on the side wall of the earphone shell 1 corresponding to the front cavity 111, and the sound leakage hole 101 is arranged on the side wall of the earphone shell 1 corresponding to the rear cavity 121. The resonance structure 3 is located in the rear cavity 121, and the sound resistance adjusting hole 302 is arranged on the resonance structure 3, and the sealed cavity 301 is communicated with the rear cavity 121 through the sound resistance adjusting hole 302.
[0039] In the present application, the resonance structure 3 with the sealed cavity 301 is arranged in the rear cavity 121, and the sealed cavity 301 is communicated with the rear cavity 121 through the sound resistance adjusting hole 302, forming an acoustic resonance cavity, and using the Helmholtz resonance effect to produce a reverse cancellation of the leaked sound; that is, the present application does not block the sound hole 102, but sets a sound energy loss mechanism on the sound leakage path, when the sound leakage occurs, the acoustic resonance cavity will produce a reverse cancellation of the leaked sound of the related frequency band, attenuate the sound radiation energy outward, so that the leaked sound is consumed by the acoustic resonance cavity, so as to not easily penetrate the shell.
[0040] At the same time, the leaked sound usually penetrates through the gap, shell structure vibration and other ways, and the resonance structure 3 reversely cancels the sound energy, without affecting the main sound radiation path of the earphone facing the listener. It can be seen that, unlike the prior art, the present application sets the resonance structure 3 in the rear cavity 121, and the main sound output path (sound hole 102) and the acoustic path of the sealed cavity 301 are independent of each other, so that the normal sound emission efficiency of the earphone can be fully reserved, and the leaked sound is damped in the propagation process by the acoustic resonance, and is reversely cancelled, so that the normal sound transmission is not interrupted and the normal sound emission quality is not reduced.
[0041] The resonance structure 3 includes a closed shell 31 and at least one conduit 32; the closed shell 31 is arranged in the rear cavity 121; the sound resistance adjusting hole 302 is arranged on the closed shell 31; the conduit 32 is arranged in the closed shell 31; one end of the conduit 32 is sealed, and the other end of the conduit 32 has an open end 321 (as shown in Figure 4 and Figure 5 ).
[0042] Specifically, the closed shell 31 forms a closed acoustic cavity volume, the conduit 32 is in the closed shell 31 and one end of the conduit 32 is closed, and the other end of the conduit 32 is open 321 and forms an acoustic input end (i.e. the open end 321 of the conduit 32 forms an acoustic input end); the space in the closed shell 31 constitutes a sealed cavity 301, and the sealed cavity 301 is communicated with the rear cavity 121 through the sound resistance adjusting hole 302, so that the closed shell 31 and the conduit 32 together constitute a damping type resonance cavity structure.
[0043] The sound wave from the opening 321 enters the conduit 32, the air column in the conduit 32 vibrates and forms a pressure reflection at the closed end of the conduit 32, resulting in a capacitive and damping effect, the sound energy is converted into heat energy or phase inversion, thus effectively weakening the leakage sound energy.
[0044] The acoustic capacity of the sealed cavity 301 is known as (unit: m 5 / N), and ; the acoustic mass of the conduit 32 (unit: kg / m 4 ) is , and ; wherein, (unit: m 3 ) represents the net volume of the sealed cavity 301, (unit: m) represents the length of the conduit 32, (unit: m 2 ) represents the cross-sectional area of the conduit 32, (unit: kg / m³) represents the density of the medium in which the sound propagates (such as air, the standard state 1.21 kg / m³, the density of dry air at standard atmospheric pressure and 20°C is about 1.20 kg / m³; represents the propagation speed of the sound wave in the medium, which is usually 343 m / s in air.
[0045] The resonance frequency (unit: Hz) is calculated by the formula: , and according to the formula and and , the corresponding , and at the target resonance frequency can be obtained, and the corresponding resonance structure 3 can be customized.
[0046] In practical applications, the net volume of the sealed cavity 301 and the size of the conduit 32 can be calculated according to the target resonance frequency, and a prototype can be made or acoustic simulation can be performed accordingly. Subsequently, the parameters of the sealed cavity 301 and the parameters of the conduit 32 can be fine-tuned through simulation or prototype debugging to achieve the desired attenuation effect of the leakage sound at the target frequency band. In this process, the sound pressure level outside the earphone can be measured, and the reduction before and after assembly can be compared to evaluate the actual suppression effect of the resonance structure 3. If necessary, the size of the sound resistance adjustment hole 302 can also be adjusted to control the depth and bandwidth of the resonance peak, so as to effectively reduce the external leakage sound while not significantly affecting the normal frequency response performance in the ear.
[0047] When there are multiple conduits connected in parallel in an acoustic structure forming a sealed cavity, when the total number of parallel conduits is n, the acoustic mass of the i-th conduit is: The length of the i-th catheter is The cross-sectional area of the i-th conduit is Then, the acoustic quality of the i-th duct... Determined by the density of the medium, the length of the pipe, and the cross-sectional area, and .
[0048] When multiple conduits are operating in parallel, the overall sound quality The reciprocal of is equal to the sum of the reciprocals of the acoustic masses of each duct, that is:
[0049] ;
[0050] Then, overall sound quality .
[0051] Resonance frequency From total sound quality Harmony and accompaniment The decision is made jointly, and the formula is as follows:
[0052] ;
[0053] The acoustic volume of the sealed cavity 301 is Net volume of sealed cavity 301 The relationship between them is:
[0054] ;
[0055] Then, the resonant frequency ;
[0056] Based on this formula, the length and cross-sectional area of each duct corresponding to different numbers of ducts at the target resonant frequency can be obtained, and the corresponding resonant structure can be customized.
[0057] Example 1 in this application
[0058] like Figure 4 As shown, the sealed shell 31 includes a shell 311; the shell 311 has an opening, and the open end of the shell 311 is connected to the earphone shell 1 to form a sealed cavity 301 between the shell 311 and the earphone shell 1.
[0059] Specifically, the sound resistance adjusting hole 302 is arranged on the shell 311; the shell 311 itself has an opening and cannot form the sealed cavity 301, but connects the shell 311 with the earphone shell 1, and the sealed cavity 301 is formed between the shell 311 and the earphone shell 1; that is, the inner wall of the earphone shell 1 becomes part of the resonance structure 3 and is used to block the opening of the shell 311, thereby forming the sealed cavity 301.
[0060] In the present application, part of the earphone shell 1 is combined with the shell 311 in the rear cavity 121 to form a sealed cavity 301 as an acoustic resonance cavity; the earphone shell 1 as part of the sealed cavity 301 cooperates with the shell 311 to form an acoustic space, so that the air column in the conduit 32 and the entire cavity can resonate. By directly participating in the formation of the sealed cavity 301 by the earphone shell 1, the coupling path of the sound wave passing through the structure of the earphone shell 1 into the sealed cavity 301 is shorter and smoother, the existing space is fully utilized in the limited earphone volume, and the internal space of the sealed cavity 301 can be increased.
[0061] In the present embodiment, in order to improve the utilization rate of the internal space and save costs, the outer circumferential surface of the conduit 32 can be fitted with the inner wall of the earphone shell 1.
[0062] Regarding the structure of the conduit 32, in the first embodiment of the present embodiment, the sealed end of the conduit 32 can be formed by fitting the end of the conduit 32 away from the opening 321 with the shell 311; in the second embodiment of the present embodiment, the sealed end of the conduit 32 is formed by arranging a plug on the end of the conduit 32 away from the opening 321.
[0063] Compared with plugging one end of the conduit 32 by the plug, the method of fitting the end of the conduit 32 with the shell 311 to form the sealed end of the conduit 32 in the first embodiment avoids the introduction of additional parts, reduces the number of parts and assembly complexity, and guarantees the air tightness by the close fitting between the conduit 32 and the shell 311, while the conduit 32 and the shell 311 are rigidly connected as a whole. Acoustically, such a sealed end can more stably reflect sound waves, thereby facilitating the control of the resonance frequency point.
[0064] Regarding the connection between the shell 311 and the earphone shell 1, in the first embodiment of the present embodiment, the shell 311 and the earphone shell 1 can be connected by adhesion. In the second embodiment of the present embodiment, the shell 311 and the earphone shell 1 are integrally formed.
[0065] Embodiment two in the present application
[0066] As shown in Figure 5 The closed shell 31 includes the shell 311 and the bottom plate 312; the shell 311 has an opening; and the bottom plate 312 is connected with the opening end of the shell 311 and forms the sealed cavity 301.
[0067] Specifically, the bottom plate 312 is connected to the opening of the shell 311, thereby sealing the opening of the shell 311, so as to form a sealed cavity 301 between the shell 311 and the bottom plate 312. In this embodiment, the earphone shell 1 is no longer part of the sealed cavity 301, and the sealed shell 31 forms an independent module, making the installation of the sealed cavity 301 in the earphone more standardized, without relying on the overall accommodation cavity and shell tolerance of the earphone, effectively reducing the influence of manufacturing and assembly deviations on acoustic performance, and ensuring that the sound leakage suppression effect of each batch of earphones is consistent and reliable. At the same time, this modular design also facilitates reuse or customized adjustment in different models of earphones.
[0068] It should be noted that the sealed end of the conduit 32 in this embodiment can still be formed by being attached to the shell 311 or even the bottom plate 312, and can also be formed by plugging with a plug; the outer circumferential surface of the conduit 32 can be positioned by being attached to the bottom plate 312 or the shell 311.
[0069] In an embodiment of this embodiment, the bottom plate 312 or the shell 311 is bonded to the earphone shell 1, thereby achieving installation and positioning of the resonance structure 3 in the rear cavity 121.
[0070] Based on embodiment one or embodiment two, the cross section of the shell 311 can be circular or other shapes, which is not specifically limited in this application, as long as it can form an acoustic resonance cavity.
[0071] Based on embodiment one or embodiment two, the opening 321 is arranged in a staggered manner with the acoustic resistance adjustment hole 302.
[0072] Specifically, the acoustic resistance adjustment hole 302 is used to adjust the acoustic coupling strength between the sealed cavity 301 and the rear cavity 121, thereby controlling the depth and bandwidth of the resonance peak. The opening 321 of the conduit 32 and the acoustic resistance adjustment hole 302 cannot be relative to each other, but are arranged in a staggered manner, ensuring that the sound waves or air flow entering the conduit 32 will not be directly sprayed through the acoustic resistance adjustment hole 302, but will be coupled with the acoustic resistance adjustment hole 302 after pressure distribution and reflection inside the sealed cavity 301.
[0073] Through this design, the air flow and acoustic energy are fully dispersed and adjusted in the sealed cavity 301, forming a stable capacitive effect, thereby achieving the expected attenuation of the leakage sound.
[0074] It can be understood that when the number of conduits 32 is multiple, as long as the opening 321 of the conduit 32 can be staggered with the acoustic resistance adjustment hole 302, the installation position of the conduit 32 does not need to be specially specified.
[0075] Based on embodiment one or embodiment two, the acoustic resistance adjustment hole 302 is arranged opposite to the loudspeaker 2.
[0076] In an embodiment of the present application, the earphone shell 1 comprises a front shell 11 and a rear shell 12; the front shell 11 is provided with a sound outlet hole 102; the rear shell 12 is connected with the front shell 11 and encloses the accommodation cavity; the loudspeaker 2 is located at the connection between the front shell 11 and the rear shell 12; the front side of the loudspeaker 2 and the front shell 11 enclose a front cavity 111, and the rear side of the loudspeaker 2 and the rear shell 12 enclose a rear cavity 121; the sound outlet hole 102 is arranged on the front shell 11, the sound leakage hole 101 is arranged on the rear shell 12, and the resonance structure 3 is located in the rear shell 12.
[0077] In an embodiment of the present application, the front shell 11 and the rear shell 12 are detachably connected, so as to facilitate the maintenance of the resonance structure 3 and the loudspeaker 2.
[0078] In another embodiment of the present application, the front shell 11 and the rear shell 12 are integrally formed, so as to reduce the splicing seam on the earphone shell 1, thereby further reducing the sound leakage.
[0079] In summary, the present application provides an open wearable earphone with a resonance structure, which comprises: an earphone shell having an accommodation cavity; a loudspeaker arranged in the earphone shell and separating the accommodation cavity into a front cavity and a rear cavity; a sound leakage hole arranged on the earphone shell and communicating with the rear cavity; and a resonance structure arranged in the rear cavity and arranged in a staggered manner with the sound leakage hole; the resonance structure has a sealed cavity, and a sound resistance adjusting hole is arranged on the resonance structure and respectively communicates with the sealed cavity and the rear cavity. Compared with the prior art, the present application does not limit the sound energy from the normal sound path, but sets the resonance structure in the rear cavity, and the main sound output path (sound outlet hole) and the acoustic path of the sealed cavity are independent of each other, so that the normal sound efficiency of the earphone can be fully retained, and the leaked sound is damped and counteracted during the propagation process through acoustic resonance, thereby reducing the sound leakage without interrupting the normal sound transmission and reducing the normal sound quality.
[0080] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0081] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and do not connote or imply any relative importance or any priority. Thus, a feature defined with "first", "second", etc. can include at least one of the features, explicitly or implicitly.
[0082] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0083] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.
[0084] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on the other element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only implementation.
[0085] Of course, the above embodiments of the present application are described in detail, but this cannot be understood as a limitation on the protection scope of the present application. The present application can have other various embodiments, and based on the present embodiment, other embodiments obtained by those skilled in the art without any creative labor are within the scope of protection of the present application. The protection scope of the present application is subject to the appended claims.
Claims
1. An open wearable earphone having a resonance structure, characterized by, It includes: An earphone shell having a receiving cavity; A speaker arranged in the earphone shell and separating the receiving cavity into a front cavity and a rear cavity; The earphone shell is provided with a sound leakage hole, and the sound leakage hole is in communication with the rear cavity; A resonance structure is arranged in the rear cavity and is arranged in a staggered manner with the sound leakage hole; The resonance structure has a sealed cavity, and the resonance structure is provided with a sound resistance adjusting hole, and the sound resistance adjusting hole is in communication with the sealed cavity and the rear cavity, respectively.
2. The open wearable earphone with resonance structure according to claim 1, characterized in that, The resonance structure includes: A closed shell arranged in the rear cavity; the sound resistance adjusting hole is arranged on the closed shell; At least one conduit arranged in the closed shell; one end of the conduit is sealed, and the other end has an open end.
3. The open wearable earphone with resonance structure according to claim 2, characterized in that, The closed shell includes: A shell; the shell has an opening, and the open end of the shell is connected with the earphone shell to enclose the sealed cavity between the shell and the earphone shell.
4. The open wearable earphone with resonance structure according to claim 3, characterized in that, The conduit is fitted with the earphone shell, and the end of the conduit away from the open end is fitted with the shell to form a sealed end.
5. The open wearable earphone with resonance structure according to claim 3, characterized in that, The shell and the earphone shell are integrally formed.
6. The open wearable earphone with resonance structure according to claim 2, characterized in that, The closed shell includes: A shell; the shell has an opening; A bottom plate connected with the open end of the shell and enclosing the sealed cavity.
7. The open wearable earphone with resonance structure according to claim 6, characterized in that, The bottom plate or the shell is bonded with the earphone shell.
8. The open wearable earphone with resonance structure according to claim 2, wherein, The open end and the sound resistance adjusting hole are arranged in a staggered manner.
9. The open wearable earphone with resonance structure according to claim 1, wherein, The sound resistance adjusting hole is arranged opposite to the speaker.
10. The open wearable earphone with resonance structure according to claim 1, wherein, The earphone shell includes: A front shell; the front shell is provided with a sound outlet hole; A rear shell connected with the front shell and enclosing the receiving cavity; the speaker is located at the connection between the front shell and the rear shell.