earphone

Abstract

This utility model discloses an earphone, particularly a smart earphone. Most of the sound emitted by the second speaker can be propagated outwards through the first sound outlet, while a portion of the sound emitted by the first speaker can be propagated outwards through the first sound outlet, and another portion can be propagated outwards through multiple second sound outlets. In this earphone, by additionally providing second sound outlets, a portion of the sound emitted by the first speaker can be propagated outwards through the second sound outlets, which facilitates smoother sound transmission to the user's ears. Simultaneously, by adding second sound outlets, the overall area of ​​the sound outlets is increased, which can mitigate the noise and distortion caused by turbulence and eddies in the airflow generated when the first speaker vibrates, thereby improving sound quality.

Description

Technical Field

[0001] This utility model relates to the field of audio equipment technology, and in particular to a pair of headphones. Background Technology

[0002] Portable audio devices, especially headphones, are playing an increasingly important role in modern life. Users are also demanding higher performance from headphones, particularly in terms of sound quality, noise cancellation, wearing comfort, and soundstage experience. Open-back headphones, due to their advantages such as comfortable wear, less pressure on the ears, and the ability to perceive ambient sound, have gained favor among some users.

[0003] In existing technologies, a key approach to improving headphone sound quality lies in optimizing the design and layout of its driver unit (speaker). To achieve a wider frequency response range (especially better high-frequency extension and low-frequency penetration) and higher fidelity sound output, some headphones employ a solution of using multiple speakers with different frequency response characteristics. However, integrating multiple speakers into a compact headphone cavity, especially in open-back headphone designs, presents numerous technical challenges. For example, within a limited and enclosed (or semi-enclosed) cavity space, the sound waves generated by the speakers during operation are easily reflected and superimposed within the cavity, forming specific standing waves and resonance peaks. This cavity resonance can cause specific frequencies to be excessively emphasized or attenuated, severely degrading sound quality. Furthermore, the speaker diaphragm generates strong airflow during vigorous back-and-forth movement. In a single main sound outlet structure, this airflow needs to be concentrated and radiated outward through a relatively narrow channel, which easily generates turbulence and eddies near the sound outlet. This turbulent airflow not only increases nonlinear distortion, resulting in blurred sound details and unclear layering, but also produces annoying "popping" sounds (i.e., airflow noise). Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an earphone that improves sound quality.

[0005] An earphone according to some embodiments of the present invention includes: an ear shell having an inner cavity and a first sound outlet communicating with the inner cavity; a first speaker disposed in the inner cavity and facing the first sound outlet; a second speaker disposed in the inner cavity and located on the side of the first speaker close to the first sound outlet, the second speaker also facing the first sound outlet; wherein, the ear shell further has a plurality of second sound outlets communicating with the inner cavity, the plurality of second sound outlets being spaced apart circumferentially along the first sound outlet.

[0006] The earphones according to the embodiments of the present invention have at least the following beneficial effects:

[0007] In the headphones of this invention, most of the sound emitted by the second speaker can be propagated outward through the first sound outlet, while a portion of the sound emitted by the first speaker can be propagated outward through the first sound outlet, and another portion can be propagated outward through multiple second sound outlets. By additionally providing second sound outlets, the headphones of this invention allow a portion of the sound emitted by the first speaker to propagate outward through the second sound outlets, facilitating smoother sound transmission to the user's ears. Furthermore, by adding second sound outlets, the overall area of ​​the sound outlets is increased, which can mitigate the noise and distortion caused by turbulence and eddies in the airflow generated during the vibration of the first speaker, thereby improving sound quality. It should also be noted that, in order to broaden the audio range of the headphones, this invention includes an additional second speaker inside the ear shell. The second speaker is installed in a positioning groove located at the inner edge of the first sound outlet. In this way, the sound emitted by the second speaker can propagate outward through the first sound outlet, with a large proportion of the sound wave traveling directly through the outlet, which can reduce the interference from ear shell reflections. However, for the first speaker, the second speaker blocks at least part of the space of the first sound outlet. Therefore, by setting multiple second sound outlets around the first sound outlet, the area of ​​the sound outlet for the first speaker is greatly increased, thus improving the sound quality.

[0008] According to some embodiments of the present invention, the first speaker is also arranged toward a plurality of second sound holes, and a plane perpendicular to the sound emission direction of the first speaker is defined as a reference plane, and the projections of the plurality of second sound holes on the reference plane surround the projection of the second speaker on the reference plane.

[0009] According to some embodiments of the present invention, the ear shell is further provided with a positioning groove located at the inner edge of the first sound outlet, a plurality of second sound outlets are arranged around the positioning groove, and the second speaker is disposed in the positioning groove.

[0010] According to some embodiments of the present invention, a plurality of elastic abutments are provided in the positioning groove, the plurality of elastic abutments are spaced apart along the circumference of the first sound hole, and the plurality of elastic abutments abut against the second speaker along the circumference of the second speaker.

[0011] According to some embodiments of the present invention, the sidewall of the positioning groove is provided with a plurality of clearance grooves, the plurality of clearance grooves are arranged at intervals along the circumference of the first sound outlet, and each clearance groove is provided with the elastic abutment member, at least a portion of the structure of the elastic abutment member protruding from the clearance groove and extending into the positioning groove.

[0012] According to some embodiments of this utility model, the elastic support member is elastic rubber or elastic silicone.

[0013] According to some embodiments of the present invention, the second sound hole is an arc-shaped hole, or the second sound hole is a columnar hole.

[0014] According to some embodiments of the present invention, the second speaker is bonded to the ear shell.

[0015] According to some embodiments of the present invention, the earphone further includes a tuning mesh, which covers the outer ends of the first sound outlet and the second sound outlet.

[0016] According to some embodiments of the present invention, the outer wall of the ear shell is provided with a groove, and the tuning mesh is disposed in the groove.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 This is a schematic diagram of the structure of an earphone according to an embodiment of the present invention;

[0020] Figure 2 This is a cross-sectional view of a partial structure of an earphone according to an embodiment of the present invention;

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This is a partial structural diagram of the ear shell according to an embodiment of the present invention;

[0023] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0024] Icon labels:

[0025] 100. Headphone; 110. Ear shell; 111. Inner cavity; 112. First sound outlet; 113. Second sound outlet; 114. Positioning groove; 115. Groove; 116. Clearance groove; 120. First speaker; 130. Second speaker; 140. Tuning mesh; 150. Speaker back cover; 160. Elastic support member. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. 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.

[0027] In the description of this utility model, 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," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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 utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] like Figure 1 As shown, the earphone 100 provided in one embodiment of the present invention can be an open-back earphone. The earphone 100 can be configured with call noise reduction function and / or artificial intelligence noise reduction function, and can also be configured with stereo surround sound and other functions.

[0030] like Figure 2 As shown, the headphones 100 include an ear shell 110, a first speaker 120, and a second speaker 130, both of which are disposed inside the ear shell 110. The frequency bands of the sound emitted by the first speaker 120 and the sound emitted by the second speaker 130 may partially overlap, but are not entirely identical. For example, the highest frequency of the second speaker 130 is higher than the highest frequency of the first speaker 120, and the lowest frequency of the first speaker 120 is lower than the lowest frequency of the second speaker 130. This allows the headphones 100 to achieve sound emission over a wider frequency range.

[0031] Combination Figure 2 and Figure 3 The ear shell 110 has an inner cavity 111 and a first sound outlet 112 communicating with the inner cavity 111.

[0032] Specifically, the ear shell 110 is a hollow structure with an inner cavity 111, made of high-strength engineering plastic, and has a sound wave guiding structure on the inner wall to optimize cavity resonance. One side of the ear shell 110 is provided with a first sound outlet 112, which is connected to the inner cavity 111.

[0033] The first speaker 120 is disposed in the inner cavity 111 of the ear shell 110 and is positioned facing the first sound outlet 112.

[0034] Specifically, the front side of the first speaker 120 is positioned facing the first sound outlet 112, and the angle between the sound wave radiation axis and the center line of the first sound outlet 112 is ≤5°. When the first speaker 120 is working, the sound emitted by the first speaker 120 propagates forward, and part of the sound emitted by the first speaker 120 can be propagated to the outside through the first sound outlet 112.

[0035] The first speaker 120 can be a dynamic speaker. The first speaker 120 can be fixed to the inner cavity 111 of the ear shell 110 by adhesive or snap-fit. The adhesive can be UV curing adhesive, which has a short curing time.

[0036] Furthermore, the earphone 100 also includes a speaker rear cover 150, which is disposed inside the ear shell 110 and covers the rear side of the first speaker 120.

[0037] The second speaker 130 is disposed in the inner cavity 111 of the ear shell 110 and is located on the side of the first speaker 120 near the first sound hole 112. The second speaker 130 is also disposed facing the first sound hole 112.

[0038] Specifically, the second horn 130 is positioned in front of the first horn 120, with the front side of the second horn 130 facing the first sound outlet 112 and the rear side of the second horn 130 facing the first horn 120. When the second horn 130 is in operation, the sound emitted by the second horn 130 propagates forward, and at least a portion of the sound emitted by the second horn 130 can propagate to the outside through the first sound outlet 112.

[0039] Combination Figure 3 and Figure 4 Furthermore, the ear shell 110 is also provided with a plurality of second sound outlet holes 113 communicating with its inner cavity 111, and the plurality of second sound outlet holes 113 are arranged at intervals along the circumference of the first sound outlet hole 112.

[0040] Specifically, there are multiple second sound outlet holes 113, ranging from 8 to 30, distributed at equal angles. Each second sound outlet hole 113 communicates with the inner cavity 111 of the ear shell 110. The multiple second sound outlet holes 113 cooperate to form a ring structure, which surrounds the first sound outlet hole 112. The second sound outlet hole 113 can be a cylindrical hole, that is, its cross-section is circular. Alternatively, it can be an arc-shaped hole, that is, its cross-section is arc-shaped. It should be noted that the cross-section of the second sound outlet hole 113 is perpendicular to its depth direction.

[0041] Combination Figure 2 and Figure 3 In the earphone 100 of this invention, most of the sound emitted by the second speaker 130 can be propagated outward through the first sound outlet 112, while part of the sound emitted by the first speaker 120 can be propagated outward through the first sound outlet 112, and another part can be propagated outward through multiple second sound outlets 113. By additionally providing the second sound outlets 113, the earphone 100 of this invention allows some of the sound emitted by the first speaker 120 to be propagated outward through the second sound outlets 113, which facilitates smoother sound transmission to the user's ears. Simultaneously, by adding the second sound outlets 113, the overall area of ​​the sound outlet is increased, which can improve the noise and distortion caused by the turbulence and eddies generated by the airflow when the first speaker 120 vibrates, thereby improving sound quality.

[0042] Furthermore, a plane perpendicular to the sound emission direction of the first speaker 120 is defined as a reference plane, and the projections of the plurality of second sound holes 113 on the reference plane surround the projection of the second speaker 130 on the reference plane; the first speaker 120 is arranged opposite to the plurality of second sound holes 113.

[0043] Understandably, for each second sound outlet 113, at least a portion of it is not blocked by the second speaker 130. Since the first speaker 120 is arranged opposite to the multiple second sound outlets 113, at least a portion of the sound emitted by the first speaker 120 can be directly transmitted outward through the second sound outlets 113. This can improve the problem of the sound emitted by the first speaker 120 being repeatedly reflected in the inner cavity 111, and can be transmitted to the user's ears more smoothly, thus improving the sound quality.

[0044] like Figure 3 As shown, in some embodiments, the ear shell 110 is further provided with a positioning groove 114 located at the inner edge of the first sound hole 112, a plurality of second sound holes 113 are arranged around the positioning groove 114, and the second speaker 130 is disposed in the positioning groove 114.

[0045] Understandably, the positioning groove 114 is used to position the second speaker 130, provide an installation position for the second speaker 130, and improve the installation accuracy of the second speaker 130. After the second speaker 130 is placed in the positioning groove 114, it is surrounded by multiple second sound holes 113, and the second speaker 130 will not completely block a single second sound hole 113.

[0046] It should be noted that the second speaker 130 is placed in the positioning groove 114, and the second speaker 130 is fixed to the ear shell 110 by adhesive.

[0047] Additionally, to broaden the audio range of the headphones 100, this invention provides an additional second speaker 130 inside the ear shell 110. The second speaker 130 is installed in a positioning groove 114 located at the inner edge of the first sound outlet 112. In this way, the sound emitted by the second speaker 130 can propagate outward through the first sound outlet 112, with a large proportion of the sound wave direct path, which can reduce the reflection interference of the ear shell 110. However, for the first speaker 120, the second speaker 130 blocks at least part of the space of the first sound outlet 112. Therefore, by providing multiple second sound outlets 113 around the first sound outlet 112, the area of ​​the sound outlet of the first speaker 120 is greatly increased, thus improving the sound quality.

[0048] Combination Figure 3 and Figure 5 In some embodiments, a plurality of elastic abutments 160 are provided in the positioning groove 114. The plurality of elastic abutments 160 are spaced apart along the circumference of the first sound hole 112, and the plurality of elastic abutments 160 abut against the second speaker 130 along the circumference of the second speaker 130.

[0049] Understandably, the elastic support member 160 can be made of elastic rubber or elastic silicone. Multiple elastic support members 160 support the second speaker 130 around its perimeter. The elastic support members 160 directly contact the second speaker 130, and their deformation disperses local pressure, physically isolating the rigid ear shell 110 from the second speaker 130 and preventing scratches / indentations. In addition, the elastic support member 160 also has a vibration damping effect, reducing the impact of vibrations generated by the second speaker 130 during operation on other components.

[0050] Furthermore, it can be understood that during the process of installing the second speaker 130 into the ear shell 110, glue can be applied to the second speaker 130 and / or the positioning groove 114 first, and then the second speaker 130 can be placed into the positioning groove 114. After the second speaker 130 is placed into the positioning groove 114, it is fixed in position by the support of each elastic support member 160. At this time, there is no need for manual pressure holding, which simplifies the assembly process (when the elastic support member 160 is not set, the second speaker 130 needs to be manually pressed for a period of time to prevent the second speaker 130 from shifting before the glue dries).

[0051] Furthermore, the side wall of the positioning groove 114 is provided with a plurality of clearance grooves 116, which are spaced apart circumferentially along the first sound outlet 112. Each clearance groove 116 is provided with an elastic support member 160, at least a portion of which protrudes from the clearance groove 116 and extends into the positioning groove 114.

[0052] It is understandable that the part of the elastic support member 160 that protrudes from the relief groove 116 and extends into the positioning groove 114 can support the second speaker 130. The relief groove 116 can be used to accommodate part of the structure of the elastic support member 160, thus avoiding the problem that the elastic support member 160 is placed entirely in the positioning groove 114 and occupies a large space in the positioning groove 114.

[0053] The elastic retaining member 160 can be fixed to the ear shell 110 by adhesive or by means of a pin.

[0054] like Figure 2 As shown, in some embodiments, the earphone 100 further includes a tuning mesh 140, which covers the outer ends of the first sound outlet 112 and the second sound outlet 113. The tuning mesh 140 serves to tune the sound and prevent dust. By using a single tuning mesh 140 to simultaneously cover the outer ends of the first sound outlet 112 and the second sound outlet 113, assembly is convenient.

[0055] Combination Figure 2 and Figure 3 Furthermore, the outer wall of the earphone shell 100 is provided with a groove 115, and the tuning mesh 140 is disposed in the groove 115. The groove 115 is used to position the tuning mesh 140, provide an installation position for the tuning mesh 140, and improve the installation accuracy of the tuning mesh 140.

[0056] In the earphone 100 of this invention, most of the sound emitted by the second speaker 130 can be propagated outward through the first sound outlet 112, while a portion of the sound emitted by the first speaker 120 can be propagated outward through the first sound outlet 112, and another portion can be propagated outward through multiple second sound outlets 113. By additionally providing the second sound outlets 113, the earphone 100 allows a portion of the sound emitted by the first speaker 120 to propagate outward through the second sound outlets 113, facilitating smoother sound transmission to the user's ears. Furthermore, by adding the second sound outlets 113, the overall area of ​​the sound outlet is increased, which can mitigate the noise and distortion caused by turbulence and eddies in the airflow generated when the first speaker 120 vibrates, thereby improving sound quality. It should also be noted that, in order to broaden the audio range of the headphones 100, a second speaker 130 is additionally provided inside the ear shell 110. The second speaker 130 is installed in the positioning groove 114 located at the inner edge of the first sound outlet 112. In this way, the sound emitted by the second speaker 130 can be propagated outward through the first sound outlet 112. The direct path of the sound wave accounts for a large proportion, which can reduce the reflection interference of the ear shell 110. However, for the first speaker 120, the second speaker 130 blocks at least part of the space of the first sound outlet 112. Therefore, by providing multiple second sound outlets 113 around the first sound outlet 112, the area of ​​the sound outlet of the first speaker 120 is greatly increased, thus improving the sound quality.

[0057] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An earphone, characterized by, include: The ear shell has an inner cavity and a first sound outlet communicating with the inner cavity; A first horn is disposed in the inner cavity and is positioned toward the first sound outlet. The second speaker is disposed in the inner cavity and located on the side of the first speaker near the first sound hole, and the second speaker is also disposed facing the first sound hole; The ear shell is also provided with a plurality of second sound outlet holes communicating with the inner cavity, and the plurality of second sound outlet holes are arranged at circumferential intervals along the first sound outlet hole.

2. The earphone of claim 1, wherein, The first speaker is also positioned toward a plurality of second sound holes, and a plane perpendicular to the sound emission direction of the first speaker is defined as a reference plane, and the projections of the plurality of second sound holes on the reference plane surround the projection of the second speaker on the reference plane.

3. The earphone of claim 1, wherein The ear shell is also provided with a positioning groove located at the inner edge of the first sound hole, a plurality of second sound holes are arranged around the positioning groove, and the second speaker is arranged in the positioning groove.

4. The earphone of claim 3, wherein The positioning groove is provided with a plurality of elastic abutment members, which are spaced apart circumferentially along the first sound outlet hole, and abut against the second speaker circumferentially along the second speaker.

5. The earphone of claim 4, wherein The sidewall of the positioning groove is provided with a plurality of clearance grooves, which are spaced apart circumferentially along the first sound outlet. Each clearance groove is provided with an elastic abutment, and at least a portion of the structure of the elastic abutment protrudes from the clearance groove and extends into the positioning groove.

6. The earphone of claim 4, wherein The elastic support member is made of elastic rubber or elastic silicone.

7. The earphone of claim 1, wherein The second sound hole is an arc-shaped hole, or a columnar hole.

8. The earphone of claim 1, wherein, The second speaker is bonded to the ear shell.

9. The earphone of claim 1, wherein, It also includes a tuning mesh, which covers the outer ends of the first sound hole and the second sound hole.

10. The earphone of claim 9, wherein, The outer wall of the ear shell is provided with a groove, and the tuning mesh is disposed in the groove.

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