Ear clip type earphone

Abstract

The ear clip type earphone provided by the embodiment of the invention comprises a sound production part used for being inserted into an auricular conchae of a wearer, an abutting part used for abutting against the back of an ear of the wearer and an ear hook used for connecting the sound production part and the abutting part, and the abutting part and the sound production part form a clamping state, so that the earphone is clamped and worn on a helix of the wearer; the sound production part comprises a first shell and a sound production assembly, the first shell is provided with a first accommodating cavity, and the sound production assembly is arranged in the first accommodating cavity; the first shell is provided with a sound outlet hole, sound generated by the sound production assembly is output through the sound outlet hole, the ear hook is provided with an ear hook symmetry plane arranged in the length direction of the ear hook, the included angle formed between the central axis of the sound outlet hole and the ear hook symmetry plane ranges from 15 degrees to 45 degrees, and the sound outlet hole is located on the lower side of the ear hook symmetry plane in the wearing state.

Description

Ear clip headphones

[0001] This application is based on the Chinese patent application with application number CN202311701969.7 and application date December 11, 2023, and claims the priority of the above patent application. The entire content of the patent application is incorporated into this application by reference.

Technical field

[0002] The present application relates to the field of sound-producing instruments, and in particular to an ear-clip earphone. [Background Technology]

[0003] Headphones are widely used in our daily lives, working with electronic devices such as mobile phones and computers to provide users with sound playback capabilities. Clip-on earphones are a new type of headphone. They are typically compact and clip onto the wearer's earlobe for increased comfort. However, the sound-producing portion of clip-on earphones is inserted into the wearer's concha cavity, limiting their size and the size of the sound-producing components they can accommodate. Consequently, the listening experience can be suboptimal. [Summary of the invention]

[0004] In an embodiment of the present application, an earclip-type earphone is provided, which includes a sound-producing portion for inserting into a wearer's concha cavity, an abutting portion for abutting against the back of the wearer's ear, and an earhook connecting the sound-producing portion and the abutting portion, wherein the abutting portion and the sound-producing portion form a clamping state so that the earphone is clamped and worn on the wearer's auricle; the sound-producing portion includes a first shell and a sound-producing component, the first shell has a first accommodating cavity, and the sound-producing component is arranged in the first accommodating cavity; a sound outlet is provided on the first shell, and the sound generated by the sound-producing component is output through the sound outlet, and the earhook has an earhook symmetry plane provided along its length direction, and the angle formed between the central axis of the sound outlet and the earhook symmetry plane is between 15° and 45°, and is located on the lower side of the earhook symmetry plane when worn.

[0005] In the solution of the present application, by setting the angle formed between the central axis of the sound hole and the symmetrical plane of the ear hook to be between 15°-45°, the sound hole is more directional to the ear hole when worn, which is beneficial to improving the listening effect of the ear clip headphones.

Brief Description of the Drawings

[0006] FIG1 is a schematic diagram of the appearance structure of an ear clip-on earphone according to an embodiment of the present application;

[0007] FIG2 is a cross-sectional view taken along the length direction of the ear hook in one embodiment of the present application;

[0008] FIG3 is a cross-sectional view of a sound-emitting portion in an embodiment of the present application, in which the sound-emitting portion has two speakers;

[0009] Figures 4-7 are schematic diagrams of the joints between the first rigid shell, the second rigid shell, and the first flexible body in several different embodiments of the present application, and can also serve as schematic diagrams of the joints between the third rigid shell, the fourth rigid shell, and the second flexible body;

[0010] 8-12 are cross-sectional views of the sound-emitting portion in several different embodiments of the present application;

[0011] FIG13 is a cross-sectional view of an embodiment of the present application in which the sound-emitting portion has a speaker;

[0012] FIG14 is a cross-sectional view of the sound-emitting portion in another embodiment of the present application;

[0013] FIG15 is a cross-sectional view taken along the length direction of the ear hook in one embodiment of the present application;

[0014] FIG16 is a cross-sectional view of the third hard shell, the fourth hard shell, and the second flexible body in several different embodiments of the present application;

[0015] FIG17 is an exploded view of an abutment portion in one embodiment of the present application;

[0016] FIG18 is an exploded view of an abutment portion in another embodiment of the present application;

[0017] FIG19 is a cross-sectional view taken along the length direction of the ear hook in another embodiment of the present application;

[0018] FIG20 is a schematic diagram of the three-dimensional structure of an earphone in another embodiment of the present application;

[0019] FIG21 is a cross-sectional view taken along the length direction of the ear hook in another embodiment of the present application;

[0020] FIG22 is a cross-sectional view of a sound-emitting portion in another embodiment of the present application;

[0021] FIG101 is a schematic diagram showing the sound hole arrangement position and wearing state of the present application;

[0022] FIG102 is a schematic diagram of the wearing state of the present application at different β angles;

[0023] Figure 103 is the applicant's human body measurement reference plane;

[0024] FIG104 is a frequency response curve diagram of the ear canal opening corresponding to different β angles when α is 0 in the present application;

[0025] FIG105 is a frequency response curve diagram of the ear canal opening corresponding to different α angles when β is 0 in the present application;

[0026] FIG106 is a schematic diagram of wearing conditions with different γ angles when the sound outlet holes of the present application are arranged horizontally;

[0027] FIG107-A is a frequency response curve diagram of the ear canal opening corresponding to different γ angle setting gradients of the present application;

[0028] Figure 107-B is a partial enlarged view of the curve in Figure 7-A of this application;

[0029] Figure 108-A is a schematic diagram of the "free field" sound field in the "horn effect" of this application;

[0030] FIG108-B is a schematic diagram of the "reflection field" sound field in the "horn effect" of this application;

[0031] Figure 109-A is a graph showing the isobaric sound pressure levels under different values ​​of θ and h-gap in this application;

[0032] Figure 109-B is a graph showing the isobaric sound pressure levels under different values ​​of θ and h-gap in the present application;

[0033] Figure 109-C is a graph showing the isobaric sound pressure levels under different values ​​of θ and h-gap in this application;

[0034] Figure 110 Sound leakage curves under different sound hole setting positions. [Specific implementation method]

[0035] The present application is further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted in different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail. They can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0036] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various embodiments. Furthermore, the steps or actions in the method description may be reordered or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various sequences in the specification and drawings are provided solely for the purpose of clearly describing a particular embodiment and are not intended to be mandatory, unless otherwise specified.

[0037] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0038] Referring to FIG1 , the present application provides an ear clip-on headphone 100, which includes a sound-producing portion 1 for inserting into the wearer's cavum concha, an abutting portion 2 for abutting the back of the wearer's ear, and an ear hook 3 connecting the sound-producing portion 1 and the abutting portion 2. The sound-producing portion 1 is a sound playback device that converts electrical signals into sound signals and plays them to the wearer. The abutting portion 2 forms a clamping state with the sound-producing portion 1 so that the entire headphone can be clamped and worn on the user's auricle. Specifically, the sound-producing portion 1 can abut the inner wall of the cavum concha, and the abutting portion 2 can abut behind the ear, so that the headphone bypasses the auricle and is clamped and worn on the user's ear. In some embodiments, the abutting portion 2 can be used as a battery compartment for installing batteries or other components. Of course, the abutting portion 2 can also be used instead of a battery compartment, and the battery can be installed in the sound-producing portion 1.

[0039] In one embodiment, referring to FIG2 , the sound-emitting unit 1 includes a first housing 11 and a sound-emitting assembly 12 . The sound-emitting assembly 12 is a module capable of converting electrical signals into sound signals, typically a speaker. The number of speakers in the sound-emitting assembly 12 may be one or more.

[0040] Referring to Figure 2 , the first housing 11 comprises a first rigid shell 111 connected to the ear hook 3, a second rigid shell 112 positioned toward the wearer's cavum concha when worn, and a first flexible body 113 configured to contact the wearer's cavum concha. The rigid material can be made of plastic, metal, or other materials suitable for supporting earphone housings, providing better support and stability for the internal structures of the first housing 11, such as the sound-producing component 12. The first rigid shell 111 and the second rigid shell 112 enclose a first accommodating chamber 110, within which the sound-producing component 12 is located. The first housing 11 has a sound outlet 114, through which sound waves emitted by the sound-producing component 12 are transmitted toward the wearer. The first flexible body 113 covers the outer wall of the second rigid shell 112. This first flexible body 113 can be made of silicone or other skin-friendly, flexible materials to enhance the comfort of the sound-producing portion 1 when in contact with the wearer.

[0041] The first hard shell 111 and the second hard shell 112 provide better support for the internal structure. Typically, when worn, the second hard shell 112 faces the wearer's cavum concha. In this embodiment, the first flexible body 113 covers the outer wall of the second hard shell 112 to reduce the possibility of direct contact between the second hard shell 112 and the wearer's skin, thereby improving wearing comfort.

[0042] At the same time, in the first shell 11, the first flexible body 113 mainly covers the second rigid shell 112, substantially without affecting the external structure and internal space of the first rigid shell 111, thereby ensuring the utilization of the internal space of the first rigid shell 111. Specifically, the first flexible body 113 is coated on the outer wall of the second rigid shell 112, so that the second rigid shell 112 has a double-layer wall thickness, while the outer wall of the first rigid shell 111 is not coated with the first flexible body 113 and is exposed. Alternatively, the first flexible body 113 extends from the outer side of the second rigid shell 112 to the outer side of the first rigid shell 111, and only a portion of the first rigid shell 111 adjacent to the second rigid shell 112 is coated with the first flexible body 113, while the rest is exposed. Therefore, the first rigid shell 111 only needs a single-layer wall thickness, which reduces the volume of the first accommodating cavity 110 occupied by the first rigid shell 111, leaving more space for the sound-generating component 12, allowing the sound-generating component 12 with a larger vibrator to be placed, thereby achieving a better acoustic effect.

[0043] Please refer to Figures 2 and 3. In some embodiments, the plane where the outermost loop line of the end face of the first flexible body 113 is located is the first reference plane A1. On the cross section perpendicular to the first reference plane A1 and passing through the center of the first reference plane A1 (the center of the first reference plane A1 refers to the center of the outermost loop line of the end face of the first flexible body 113), the coverage area of ​​the first flexible body 113 on the second hard shell 112 is greater than or equal to 80% of the curved length segment of the second hard shell 112 (here, referring to the outer contour line of the second hard shell 112). For example, it can be 80%, 85%, 90%, 95%, or 100% to ensure that the first flexible body 113 can cover a sufficiently large area on the second hard shell 112 to reduce or eliminate the possibility of direct contact between the wearer and the second hard shell 112.

[0044] In some embodiments, referring to Figures 2 and 13 , the earhook symmetry plane A2 (marked in Figure 14 ) of the earhook 3 intersects the outermost loop of the end surface of the first flexible body 113 at two intersection points. A cross section perpendicular to the earhook symmetry plane A2 and passing through the two intersection points can also serve as the first reference plane A1. In a cross section perpendicular to the first reference plane A1 and passing through the center of the outermost loop of the end surface of the first flexible body 113, the coverage area of ​​the first flexible body 113 over the second hard shell 112 is greater than or equal to 80% of the curved length segment of the second hard shell 112 (here, the outer contour of the second hard shell 112), for example, 80%, 85%, 90%, 95%, or 100%. This embodiment limits the proportion of the first flexible body 113 on the second hard shell 112 from another perspective, allowing the first flexible body 113 to cover a sufficiently large area of ​​the second hard shell 112 to reduce or eliminate the possibility of direct contact between the wearer and the second hard shell 112. Among them, the ear hook symmetry plane A2 refers to a plane that is symmetrical on the left and right sides of the ear hook 3 along the length extension direction. When the ear hook 3 is an irregular asymmetric structure, the difference between the ear hooks 3 on both sides of the ear hook symmetry plane A2 should be the smallest among various division methods. For example, the ear hook symmetry plane A2 can be determined by the center of the first reference plane A1 (the center of the first reference plane A1 refers to the center of the outermost loop of the end face of the first flexible body 113), the center of the cross section of the abutment portion 2 perpendicular to its length direction (the length direction will be described later), and the center point of the length direction of the ear hook 3.

[0045] In some embodiments, referring to FIG3 , at a first predetermined cross-section, the coverage area of ​​the first flexible body 113 over the second rigid shell 112 is greater than or equal to 80% of the curved length segment of the second rigid shell 112 (here, the outer contour line of the second rigid shell 112 ), for example, 80%, 85%, 90%, 95%, or 100%. In the description of this application, unless otherwise specified, the "first predetermined cross-section" may refer to a cross-section perpendicular to the first reference plane A1 and passing through the center of the outermost loop of the end surface of the first flexible body 113, or may refer to the earhook symmetry plane A2; the "first reference plane A1" may refer to the plane on which the outermost loop of the end surface of the first flexible body 113 lies. In addition, the earhook symmetry plane A2 (marked in FIG14 ) intersects with the outermost loop of the end surface of the first flexible body 113 to form two intersection points, and the "first reference plane A1" may also refer to a cross-section perpendicular to the earhook symmetry plane A2 and passing through these two intersection points. In this way, the first flexible body 113 can cover a sufficiently large area on the second hard shell 112 to reduce or eliminate the possibility of direct contact between the wearer and the second hard shell 112.

[0046] In some embodiments, referring to Figures 4-7, the end of the second rigid shell 112 is spliced ​​and fixed to the end of the first rigid shell 111. The end of the second rigid shell 112 is fixed to the end of the first rigid shell 111 by splicing to form a reliable and compact fixation. This splicing method also facilitates assembly and reduces the assembly process.

[0047] Specifically, during the production and processing of earphones, in order to ensure that the first flexible body 113 (usually silicone material) forms a more secure connection with the second hard shell 112, it is necessary to injection mold the first flexible body 113 on the basis of the second hard shell 112. If the first flexible body 113 has a large length spanning the splicing position of the first hard shell and the second hard shell 112, the process usually can only be carried out after the speaker is installed in the first shell and the splicing is completed. In this case, the internal components of the first shell will be damaged by the high temperature during the injection molding process, which is not conducive to improving the product yield; therefore, most areas of the first flexible body 113 are set on the second hard shell 112, and silicone can be injected on the second hard shell 112 first and then assembled. This not only simplifies the process, but also avoids damage to the speaker caused by injection molding after assembly.

[0048] In some embodiments, referring to FIG3 , portions of the outer wall of the second hard shell 112 not blocked by the first hard shell 111 are covered by the first flexible body 113. Since the areas of the first shell 11 that come into contact with the wearer are typically concentrated on the second hard shell 112, this structure ensures that no areas of the second hard shell 112 are exposed, preventing the wearer from directly contacting the second hard shell 112, further improving wearing comfort.

[0049] In some embodiments, referring to Figures 5 and 6 , the first flexible body 113 extends from the outside of the second rigid shell 112 to the outside of the first rigid shell 111, covering a portion of the outer wall of the first rigid shell 111. The joint between the first and second rigid shells 111, 112, is typically a stress concentration area. By encasing a portion of the outer wall of the first rigid shell 111 with the first flexible body 113, the first flexible body 113 is simultaneously secured to both the first and second rigid shells 111, 112. This further enhances the security of the first and second rigid shells 111, 112, and provides some protection for the stress concentration area. Furthermore, the first flexible body 113 can also wrap around a portion of the first rigid shell 111 near the second rigid shell 112, preventing the wearer from directly contacting the second rigid shell 112 when touching that area, thereby improving comfort. Furthermore, the first flexible body 113 can also cover the joint between the first and second rigid shells 111, 112, enhancing the sealing and waterproofing effect.

[0050] In some embodiments, referring to Figures 4 and 7, the first flexible body 113 does not cover the outer wall of the first hard shell 111 so that the first flexible body 113 does not squeeze the internal space of the first hard shell 111, ensuring that the first hard shell 111 has a larger internal space.

[0051] In some embodiments, please refer to Figure 5, the end surface 113a of the first flexible body 113 extends to the end surface 111a of the first hard shell 111, that is, the end surface 113a of the first flexible body 113 abuts against the end surface 111a of the first hard shell 111. Through the flexible deformation characteristics of the first flexible body 113, a better sealing and waterproof effect can be formed with the end surface 111a of the first hard shell 111.

[0052] In some embodiments, a gap is formed between the end surface 113 a of the first flexible body 113 and the end surface 111 a of the first rigid shell 111 , so as to provide deformation space for the first flexible body 113 when the first flexible body 113 is slightly deformed by pressure.

[0053] In some embodiments, referring to FIG4 , the end surface 113 a of the first flexible body 113 is flush with the outermost loop of the end surface 113 a of the first flexible body 113 in the inner-outer direction. The inner side refers to the side of the first housing 11 where the first accommodating cavity 110 is located, and the outer side refers to the outer side of the first housing 11 facing away from the first accommodating cavity 110.

[0054] In some embodiments, a gap exists between the end surface 111a of the first rigid shell 111 and the end surface 112a of the second rigid shell 112. A portion 113b of the first flexible body 113 extends into the gap and is clamped and secured by the end surfaces 111a, 112a of the first rigid shell 111 and the second rigid shell 112. In this embodiment, the first flexible body 113 is more firmly attached to the second rigid shell 112, forming a more secure fit than simply by bonding. Furthermore, in addition to providing a more comfortable contact feel, the first flexible body 113 also achieves a better sealing and waterproofing effect through the clamping action of the first rigid shell 111 and the second rigid shell 112.

[0055] In the above embodiments, the end surface 111a of the first rigid shell 111 and the end surface 112a of the second rigid shell 112 are a pair of mutually adapted flat surfaces, inclined surfaces, stepped surfaces, folded surfaces, and wavy surfaces, or a combination of at least two of these, so as to better achieve the splicing of the first rigid shell 111 and the second rigid shell 112 and ensure a sealed and waterproof effect. The end surfaces of the first rigid shell 111 and the second rigid shell 112 are adapted to each other, facilitating bonding and fixing the contact surfaces. Furthermore, by using more complex contact surface designs, such as stepped surfaces, the bonding surface area is increased, further improving the degree of firmness. Furthermore, by combining multiple end surface configurations, a multi-directional, more secure bonding structure can be formed.

[0056] Furthermore, in some embodiments, referring to FIG3 , the sound-emitting assembly 12 is mounted on the second hard shell 112, with the end of the sound-emitting assembly 12 facing the first hard shell 111 protruding from the second hard shell 112. In this embodiment, the split structure of the first hard shell 111 and the second hard shell 112 is fully utilized, and the sound-emitting assembly 12 is first mounted on the second hard shell 112, and then the second hard shell 112 and its components are fixed to the first hard shell 111. This can reduce processing difficulty and improve processing efficiency and yield rate.

[0057] Furthermore, the sound outlet 114 can be provided in the first hard shell 111 (as shown in FIG3 ), or can be provided on the second hard shell 112 and the first flexible body 113 (as shown in FIG8 ), or can be formed by combining the first hard shell 111 and the second hard shell 112 (as shown in FIG9 ).

[0058] In some embodiments, the sound hole 114 is provided in a portion of the first rigid shell 111 not covered by the first flexible body 113. This eliminates the need for the sound hole 114 to penetrate both the first rigid shell 111 and the second rigid shell 112, preventing uneven surfaces on the sound hole 114 that could affect the installation of the tuning mesh and steel mesh. Furthermore, the sound hole 114 provided in the first rigid shell 111 eliminates the need to drill holes in the first flexible body 113, nor does it need to consider the impact of the first flexible body 113 on the sound hole 114, thus reducing design and production costs.

[0059] In addition, since a larger internal accommodation space can be formed at the first hard shell 111, a positioning boss can be set at the sound outlet 114 of the diaphragm mounting bracket without excessively increasing the external dimensions of the first shell 11, thereby increasing the openness of the ear canal and improving the safety and comfort of the ear clip headphones.

[0060] In some embodiments, referring to FIG3 , the central axis A3 of the sound outlet 114 forms an angle α1 of 3°-9° with the first reference plane A1. For example, the angle α1 can be 3°, 5°, 7°, or 9°. This arrangement ensures that the sound outlet 114 does not span across the two housings while remaining relatively close to the ear canal, thereby increasing the listening volume.

[0061] In some embodiments, referring to FIG3 , the distance D5 between the end of the sound outlet 114 closest to the second rigid shell 112 and the first reference plane A1 is 1 mm to 3 mm, for example, 1 mm, 1.5 mm, 2 mm, 2.5 mm, or 3 mm. This arrangement ensures that the sound outlet 114 does not span the two shells while remaining relatively close to the ear canal. This also leaves space for the adhesive connection between the sound outlet mesh and the first rigid shell 111, and between the first rigid shell 111 and the speaker's diaphragm mounting bracket 123.

[0062] In some embodiments, please refer to Figure 3, the first hard shell 111 has an area facing the wearer's ear canal when worn, and the sound outlet 114 is at least partially located in the area to make the sound propagation direction as much as possible toward the ear canal, ensuring that the sound from the sound outlet 114 can penetrate the wearer's ear canal more promptly and accurately, achieving better listening effect and listening volume, and improving the sound quality of the headphones.

[0063] In some embodiments, referring to FIG. 3 , the sound-emitting assembly 12 includes a diaphragm 124. The outer edge mounting plane of the diaphragm 124 (as shown in FIG. 3 , the edge of the diaphragm 124 abuts the mounting bracket 123, and the outer edge mounting plane of the diaphragm 124 refers to the plane where this abutment occurs) forms an angle of 3°-9° with the first reference plane A1. For example, the angle can be 3°, 5°, 7°, or 9°. This allows the speaker to be assembled with the first and second rigid shells 111, 112, and then assembled with the first rigid shell 111. A single speaker does not cross the parting line between the first and second rigid shells 111, 112, facilitating assembly. Furthermore, this arrangement allows the sound outlet 114 to face the ear canal, while locating the contact point between the cavum concha and the first flexible body 113 closer to the center. This accommodates a wider range of people and reduces the probability of the cavum concha contacting the rigid shell.

[0064] In some embodiments, as shown in Figure 19 , the earhook 3 has an earhook symmetry plane A2 running along its length. The sound-generating assembly 12 includes a diaphragm 124. The angle between the mounting plane of the outer edge of the diaphragm 124 and the earhook symmetry plane A2 is less than 10°. This arrangement allows the curve formed by the speaker's outer ring cutting through the first housing 11 to form a wedge-shaped space with the cavum concha. When the sound outlet 114 is arranged along this curve, the sound outlet 114 and the cavum concha form a horn structure. Using the cavum concha as a reflective wall, a horn effect is created, thereby increasing the listening volume.

[0065] The sound hole 114 can be provided on the second hard shell 112 and the first flexible body 113 . This way, the sound hole 114 can be closer to the ear hole, which is conducive to improving the listening experience. In addition, the sound hole 114 does not need to span both the first hard shell 111 and the second hard shell 112 .

[0066] The sound hole 114 can be elongated, with its length parallel or nearly parallel to the earhook symmetry plane A2. The central axis A3 of the sound hole 114 can form an angle α11 of 40°-80° with the first reference plane A1. For example, α11 can be 40°, 50°, 60°, 70°, or 80°. In this way, the sound hole 114 and the concha cavity form a horn structure, using the concha cavity as a reflective wall to create a horn effect, thereby increasing the listening volume. The term "parallel or nearly parallel" as used herein means that the length of the sound hole 114 is parallel to the earhook symmetry plane A2, with an error of within plus or minus 15° permitted.

[0067] The sound outlet 114 can be elongated, with its length parallel or nearly parallel to the earhook symmetry plane A2. The distance between the end of the sound outlet closest to the first rigid shell and the first reference plane can be 1mm-4mm, for example, 1mm, 2mm, 2.5mm, 3mm, or 4mm. This allows the sound outlet 114 to be closer to the ear hole, enhancing the horn effect. Furthermore, it prevents the sound outlet 114 from spanning two shells.

[0068] In some embodiments, referring to FIG3 , the widest radius of the sound-emitting component 12 is located within the first rigid shell 111. Since the first flexible body 113 is not provided on the first rigid shell 111 or is provided only in a portion thereof, the space of the first rigid shell 111 is larger than that of the second rigid shell 112. By disposing the widest radius 125 of the sound-emitting component 12 within the first rigid shell 111, a sound-emitting component 12 with a larger vibrator can be selected to obtain better sound quality. Compared to disposing the widest radius 125 of the sound-emitting component 12 opposite to the first flexible body 113, this method can fully utilize the inner cavity space. The radius of the sound-emitting component 12 mentioned here is the radius formed based on the radial direction of the diaphragm in the speaker.

[0069] In some embodiments, referring to FIG. 3 , the sound-emitting assembly 12 includes a mounting bracket 123 , with a raised structure (indicated by 125 ) disposed on one side of the mounting bracket 123 . This raised structure provides a sound transmission channel communicating with the speaker in the sound-emitting assembly 12 . Typically, this sound transmission channel is at least partially aligned with the sound outlet 114 . Therefore, in this embodiment, the widest radius 125 of the sound-emitting assembly 12 is the location of the raised structure. Positioning the raised structure within the first rigid housing 111 maximizes the space within the first rigid housing 111 , allowing for the installation of a sound-emitting assembly 12 with a larger vibrator.

[0070] In some embodiments, referring to FIG3 , the first flexible member 113 is not disposed in the region of the radial direction of the sound-emitting assembly 12, where the widest radius 125 of the sound-emitting assembly 12 faces. This prevents the first flexible member 113 from squeezing the interior space of the first rigid housing 111, thereby ensuring that the first rigid housing 111 has a larger interior space available for use.

[0071] In some embodiments, referring to FIG3 , the first rigid shell 111 has a groove, and the widest radius 125 of the sound-emitting component 12 is accommodated within the groove. By providing the groove on the inner wall of the first rigid shell 111 , the interior space of the first rigid shell 111 can be expanded, thereby accommodating a larger sound-emitting component 12 .

[0072] In some embodiments, the groove can be used to accommodate a positioning boss on the mounting bracket, and the positioning boss can also serve as a sound outlet channel on the mounting bracket to guide the sound to the sound outlet hole 114.

[0073] Furthermore, the sound-generating component 12 may include one or more speakers. Based on the rational use of the internal space of the first hard shell 111, the sound-generating component 12 may be placed in various forms.

[0074] In some embodiments, referring to FIG3 , the magnetic shield 122 of at least one speaker is located in the second hard shell 112 and is disposed toward the second hard shell 112 . The magnetic shield has an end surface 1221 facing the second hard shell 112 , and the end surface 1221 is a plane.

[0075] Furthermore, in some embodiments, referring to FIG3 , the outermost loop of the end surface 113a of the first flexible body 113 lies on a plane that is a first reference plane A1. In a cross section perpendicular to the first reference plane A1 and passing through the magnetic shield 122 toward the center of the end surface 112a of the second rigid shell 112, the radius of curvature of the region of the second rigid shell 112 (here, the outer contour of the second rigid shell 112) that faces the end surface 1221 of the magnetic shield 122 is greater than the radius of curvature of at least a portion of the other regions located on either side of the region. This allows the curvature of the second rigid shell 112 to be smaller in this region, thereby leaving more space for the corresponding region of the outer first flexible body 113. This allows the thickness of the first flexible body 113 to be increased in this region without increasing the overall thickness of the first shell 11. This region is closer to the contact center (i.e., the center of the first flexible body 113 that contacts the wearer), and a greater thickness can improve wearing comfort.

[0076] In some embodiments, please refer to Figure 3. On the second preset cross-section, the radius of curvature of the area on the second hard shell 112 (here, on the outer contour line of the second hard shell 112) opposite to the end face 1221 of the magnetic cover 122 is greater than the radius of curvature of at least a portion of other areas located on both sides thereof. In the description of this application, unless otherwise specified, the "second preset cross-section" may refer to a cross-section perpendicular to the first reference plane A1 and passing through the magnetic cover 122 toward the center of the end face 112a of the second hard shell 112, or it may refer to the ear hook symmetry plane A2. In this way, the curvature of the second hard shell 112 at this location can be set smaller, thereby leaving more space for the first flexible body 113 on the outside, and increasing the thickness of the first flexible body 113 at this location without increasing the overall thickness of the first shell 11.

[0077] In some embodiments, referring to FIG3 , the plane on which the outermost loop of the end surface 113a of the first flexible body 113 lies is a first reference plane A1. In a cross section perpendicular to the first reference plane A1 and passing through the magnetic shield 122 toward the center of the end surface 112a of the second rigid shell 112, the radius of curvature R2 of the area on the first flexible body 113 (here, the outer contour of the first flexible body 113) opposite the magnetic shield 122 is 6 mm to 18 mm. For example, R2 can be 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, or 18 mm. This area is close to the contact center (i.e., the center of the first flexible body 113 that contacts the wearer). Setting a larger radius of curvature can increase the contact area and improve comfort.

[0078] In some embodiments, referring to FIG. 3 , in the second predetermined cross-section, the radius of curvature R2 of the area on the first flexible body 113 (here, the outer contour of the first flexible body 113 ) opposite the magnetic cover 122 is 6 mm to 18 mm. For example, R2 can be 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, or 18 mm. This area is close to the contact center, and setting a larger radius of curvature can increase the contact area and improve comfort.

[0079] In some embodiments, referring to FIG3 , the plane on which the outermost loop of the end surface 113a of the first flexible body 113 lies is the first reference plane A1. On a cross section perpendicular to the first reference plane A1 and passing through the center of the end surface 112a of the second rigid shell 112 and facing the magnetically conductive cover 122, the thickness of the area of ​​the first flexible body 113 opposite the end surface of the magnetically conductive cover 122 is 0.8 mm to 2 mm, for example, 0.8 mm, 1.0 mm, 1.5 mm, or 2.0 mm. This area is close to the contact center, and thicker silicone can improve comfort.

[0080] In some embodiments, please refer to Figure 3. On the second preset cross-section, the thickness of the area on the first flexible body 113 opposite to the end face of the magnetic cover 122 is 0.8mm-2mm, for example, it can be 0.8mm, 1.0mm, 1.5mm, or 2.0mm. This area is close to the contact center, and setting a thicker silicone can improve comfort.

[0081] In some embodiments, referring to FIG. 19 , a predetermined region C1 on the outer contour of the first flexible body 113 on a first predetermined cross-section has a greater radius of curvature than at least a portion of the other regions on either side thereof. This predetermined region C1 is near the contact center C2 between the first flexible body 113 and the cavum concha (i.e., the center of contact between the first flexible body 113 and the wearer; as shown in FIG. 19 , in some embodiments, the distance between the contact center C2 and the end of the first flexible body 113 proximal to the earhook 3 is approximately one-third the length of the outer contour of the first flexible body 113). Because the predetermined region C1 is near the contact center C2, by setting the predetermined region C1 to have a larger radius of curvature, the contact area with the cavum concha can be increased, thereby improving wearing comfort.

[0082] The radius of curvature of the predetermined region C1 can be 6 mm to 18 mm, for example, 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, or 18 mm. This region is close to the contact center C2 (i.e., the center of contact with the wearer on the first flexible body 113). Setting a larger radius of curvature can increase the contact area and improve comfort.

[0083] The thickness of the first flexible body 113 in the predetermined area C1 can be 0.2mm-1mm, for example, 0.2mm, 0.5mm, 0.8mm, or 1.0mm. Setting the thickness of the first flexible body 113 in the predetermined area C1 in this way can ensure wearing comfort without increasing the overall size of the first shell.

[0084] In some embodiments, referring to FIG3 , the sound-emitting assembly 12 includes an intermediate mounting bracket 123 (i.e., a specific form of mounting bracket 123 for dual speakers) and two speakers, which are mounted together on the intermediate mounting bracket 123. A sound transmission channel 1231 is formed between the diaphragms 124 of the two speakers, and the central axis A3 of the sound outlet 114 passes through the sound transmission channel 1231. The dual-speaker design increases the area of ​​the diaphragm 124 while occupying the same radial area, thereby improving the BL value of the speaker for the same volume, thereby achieving higher acoustic efficiency. Furthermore, the central axis A3 of the sound outlet 114 passes through the sound transmission channel 1231, making the path for sound to pass out of the first accommodating chamber 110 more open and direct.

[0085] In some embodiments, as shown in FIG3 , the sound transmission channel 1231 is a shared front cavity of the two speakers. In this embodiment, the shared front cavity structure can further reduce the volume occupied by the dual speakers.

[0086] In some embodiments, the sound channel 1231 is a shared back cavity for the two speakers, and a waterproof, breathable membrane is provided over the sound outlet 114 and / or the sound channel 1231. This shared back cavity structure can further reduce the volume occupied by the two speakers; the waterproof, breathable membrane provided over the sound outlet 114 and / or the sound channel 1231 provides waterproof and dustproof protection while minimizing the impact on sound quality, thereby increasing the reliability of the earphones.

[0087] In some embodiments, referring to FIG3 , the outermost loop of the end surface 113a of the first flexible body 113 lies on a plane that is a first reference plane A1. On a cross section perpendicular to the first reference plane A1 and passing through the center of the mounting bracket 123 (i.e., the geometric center of the mounting bracket 123), the center of the mounting bracket 123 and the line connecting the two ends of the first flexible body 113 form an angle α2 of 130°-160°. For example, angle α2 can be 130°, 140°, 150°, or 160°. This arrangement of the coverage area of ​​the first flexible body 113 allows the contact point between the cavum concha and the silicone segment to be located closer to the center, thereby reducing the probability of contact between the human ear and the hard shell segment.

[0088] In some embodiments, referring to FIG3 , on a cross section perpendicular to the first reference plane A1 and passing through the center of the mounting bracket 123 (i.e., the geometric center of the mounting bracket 123), the center of the mounting bracket 123 and the line connecting the two ends of the first flexible body 113 form an angle α2 of 130°-160°, or an angle α2 greater than 160° and less than or equal to 170°. For example, angle α2 can be 130°, 140°, 150°, 160°, or 170°. This arrangement of the coverage area of ​​the first flexible body 113 allows the contact point between the cavum concha and the silicone segment to be located closer to the center, further reducing the probability of contact between the human ear and the hard shell segment.

[0089] In some embodiments, referring to FIG. 10 , the sound-emitting assembly 12 includes an intermediate mounting bracket 123 (i.e., a specific structure of a mounting bracket applied to dual speakers) and two speakers, which are mounted together on the intermediate mounting bracket 123. A line A4 connecting the centers of the magnetic shields 122 of the two speakers passes through the first rigid shell 111, or a line A4 connecting the centers of the magnetic shields 122 of the two speakers does not pass through the second rigid shell 112 and the first flexible body 113. In this embodiment, the center of the entire sound-emitting assembly 12 can be brought closer to the first rigid shell 111, thereby more fully utilizing the internal space of the first rigid shell 111.

[0090] In some embodiments, referring to FIG. 8 , the widest side of the sound-generating component 12 in the diameter direction and the widest side in the axial direction are both disposed opposite to the first hard shell 111 .

[0091] In some embodiments, referring to FIG3 , both sides of the widest axial portion of the sound-emitting component 12 are disposed opposite the first rigid shell 111. Because the first rigid shell 111 has a larger space than the second rigid shell 112, disposing both sides of the widest axial portion of the sound-emitting component 12 opposite the first rigid shell 111 allows for selecting a sound-emitting component 12 with a larger vibrator to achieve better sound quality.

[0092] In some embodiments, please refer to Figure 8, the sound-emitting component 12 includes a mounting bracket 123 and at least one speaker, the speaker is mounted on the mounting bracket 123, and the distance between the center 1232 of the side surface of the mounting bracket 123 facing away from the magnetic cover 122 and the first reference plane A1 is 0.4mm-2mm, for example, the distance can be 0.4mm, 0.8mm, 1.2mm, 1.5mm, or 2mm, the first reference plane A1 is the plane where the outermost loop line of the end surface 113a of the first flexible body 113 is located; or the ear hook symmetry plane A2 of the ear hook 3 and the outermost loop line of the end surface 113a of the first flexible body 113 have two intersection points, the first reference plane A1 is a plane perpendicular to the ear hook symmetry plane A2 and passing through the two intersection points.

[0093] In some embodiments, the sound-emitting component 12 includes a mounting bracket 123 and at least one speaker, which is mounted on the mounting bracket 123. The distance between the center 1232 of the side surface of the mounting bracket 123 facing away from the magnetic cover 122 and the first reference plane A1 is 0.4 mm-2 mm, or greater than 2 mm and less than or equal to 3 mm. For example, the distance can be 0.4 mm, 0.8 mm, 1.2 mm, 1.5 mm, 2 mm, 2.5 mm, or 3 mm.

[0094] By arranging the position of the sound-emitting component in the first shell 11 in this way, more volume of the sound-emitting component can be distributed toward the first hard shell 111, thereby making full use of the relatively ample internal space of the first hard shell 111, so that the first shell 11 can accommodate a larger sound-emitting unit.

[0095] In some embodiments, as shown in FIG19 , the ear hook 3 has an ear hook symmetry plane A2 arranged along its length direction, and the ear hook symmetry plane A2 intersects with the outermost loop line of the end face of the first flexible body 113 to form two intersection points; on the ear hook symmetry plane A2, the ear hook 3 has an inner contour line, and the inner contour line has a first reference point O1 in an area close to the wearer's helix, and the inner contour line has a local maximum curvature at the first reference point O1, and an angle α12 formed by the first reference point O1 and the line between the two intersection points is less than or equal to 15°, for example, α12 can be 3°, 5°, 8°, 11°, or 15°.

[0096] In some embodiments, as shown in Figure 19, the ear hook 3 has an ear hook symmetry plane A2 arranged along its length direction, and the ear hook symmetry plane A2 intersects with the outermost loop line of the end face of the first flexible body 113 to form two intersection points; on the ear hook symmetry plane A2, there is a second reference point O2 on the outer wall of the sound-emitting part 1, and the distance between the second reference point O2 and the outer wall of the abutting part 2 is the shortest, and the angle α13 formed by the second reference point O2 and the line between the two intersection points is between 85° and 115°. For example, α13 can be 85°, 90°, 100°, 105°, or 115°.

[0097] In some embodiments, when the earphone is in a natural state (i.e., not subject to external interference), the sound-emitting portion 1 and the abutting portion 2 are spaced apart on the earhook symmetry plane A2. In this case, the second reference point O2 may refer to the endpoint of the shortest connecting line between the sound-emitting portion 1 and the abutting portion 2 on the sound-emitting portion 1. In some embodiments, when the earphone is in a natural state (i.e., not subject to external interference), the sound-emitting portion 1 and the abutting portion 2 abut against each other on the earhook symmetry plane A2. In this case, the second reference point O2 may refer to the midpoint of the arc segment formed by the abutting area of ​​the sound-emitting portion 1 and the abutting portion 2 on the earhook symmetry plane A2. Setting the wrap angle of the first flexible body 113 in this way can satisfy the requirement that the contact area between the human ear and the first shell under most people or standard human head models covers the first flexible body 113, thereby ensuring comfort, while also leaving more space for the first hard shell 111, thereby ensuring that the volume of the inner cavity is not excessively occupied by the silicone area.

[0098] In some embodiments, please refer to Figure 10, the tangent of the ear hook 3 forms an angle θ2 of 18°-35° with the first reference plane A1; wherein the first reference plane A1 is the plane where the outermost loop line of the end surface 113a of the first flexible body 113 is located; or the ear hook symmetry plane A2 of the ear hook 3 and the outermost loop line of the end surface 113a of the first flexible body 113 have two intersection points, and the first reference plane A1 is a plane perpendicular to the ear hook symmetry plane A2 and passing through the two intersection points.

[0099] By setting the connection position relationship between the ear hook 3 and the first shell 11 in this way, the extension direction of the ear hook 3 and the extension direction of the helix are nearly parallel after the earphones are worn, reducing the degree of squeezing between the ear hook 3 and the helix or avoiding squeezing the helix, thereby improving the wearing comfort of the ear clip earphones.

[0100] In some embodiments, please refer to Figure 10, the distance D10 between the tangent of the ear hook 3 and the first reference plane A1 is 6 mm-8 mm; wherein the first reference plane A1 is the plane where the outermost loop line of the end surface 113a of the first flexible body 113 is located; or the ear hook symmetry plane A2 of the ear hook 3 and the outermost loop line of the end surface 113a of the first flexible body 113 have two intersection points, and the first reference plane A1 is a plane perpendicular to the ear hook symmetry plane A2 and passing through the two intersection points.

[0101] In some embodiments, please refer to Figure 3, the plane where the outermost loop line of the end surface 113a of the first flexible body 113 is located is the first reference plane A1, and on the cross section perpendicular to the first reference plane A1 and passing through the center of the first reference plane A1, the length of the first flexible body 113 (specifically referring to the length of the outer contour line of the first flexible body 113) is 16mm-25mm, for example, it can be 16mm, 19mm, 21mm, 23mm, or 25mm.

[0102] In some embodiments, referring to FIG. 3 , at a first preset cross section, the length of the outer contour line of the first flexible body is 16 mm to 25 mm, for example, 16 mm, 19 mm, 21 mm, 23 mm, or 25 mm.

[0103] Setting the length of the outer contour line of the first flexible body 113 in this way is conducive to avoiding direct contact between the hard shell and the skin when worn, thereby ensuring wearing comfort, and leaving more space for the first hard shell 111, thereby ensuring that the inner cavity volume is not excessively occupied by the silicone area.

[0104] In some embodiments, please refer to Figure 11. The plane where the outermost loop line of the end surface 113a of the first flexible body 113 is located is the first reference plane A1. On a cross section perpendicular to the first reference plane A1 and passing through the center of the first reference plane A1, the end of the first flexible body 113 closer to the ear hook 3 is the first end 113a, and the end farther away from the ear hook 3 is the second end 113b. In an area D8 at a point one-third of the distance from the end surface of the first flexible body 113 to the second end 113b, the thickness along the normal direction of the outer wall is 0.8 mm-2.0 mm, for example, it can be 0.8 mm, 1.2 mm, 1.5 mm, 1.8 mm, or 2.0 mm.

[0105] In some embodiments, referring to FIG. 11 , on a first preset cross-section, an end of the first flexible body 113 closer to the ear hook 3 is a first end 113a, and an end farther away from the ear hook 3 is a second end 113b. In an area D8 at a point one-third of the distance between the end surface of the first flexible body 113 and the second end 113b, the thickness along the normal direction of the outer wall is 0.8 mm to 2.0 mm, for example, 0.8 mm, 1.2 mm, 1.5 mm, 1.8 mm, or 2.0 mm.

[0106] According to the standard human head model, when the first shell 11 is near-spherical, the connection tangent between the ear hook and the first shell 11 is at 18°-35° to the first reference plane, the distance between the tangent of the ear hook and the first reference plane is 6mm-8mm, and the length of the first flexible body is 16mm-25mm, the contact center area between the first shell 11 and the human head model is located in the area one-third of the distance between the end face of the first flexible body and the second end. The thickness of the first flexible body is set in this way, so that the contact center area is close to the midpoint of the length of the first flexible body, reducing the probability of the human ear contacting the hard shell, and taking into account reducing the volume of the first shell 11 to ensure the effect of open listening.

[0107] In some embodiments, referring to FIG. 19 , the central contact area C2 between the first shell 11 and the human head model is located at a location one-third of the way from the end surface of the first flexible body 113 to the first end 113a. In this case, on a first predetermined cross-section, the thickness of the first flexible body 113 at a location one-third of the way from the end surface of the first end 113a, along the normal direction of the outer wall, is between 0.8 mm and 2.0 mm. For example, the thickness can be 0.8 mm, 1.2 mm, 1.5 mm, 1.8 mm, or 2.0 mm. Setting the thickness of the first flexible body in this location allows the central contact area to be closer to the midpoint of the length of the first flexible body, reducing the probability of the human ear contacting the hard shell while also minimizing the volume of the first shell 11 to ensure an open-back listening experience.

[0108] In some embodiments, please refer to Figure 12, the plane where the outermost loop line of the end surface 113a of the first flexible body 113 is located is the first reference plane A1, and on the cross section perpendicular to the first reference plane A1 and passing through the center of the first reference plane A1, a three-point arc is fitted according to the two end points of the outer wall of the first flexible body 113 and the midpoint of the first flexible body, and the center of the three-point arc is used as the connecting line of the center of the acoustic cavity to form an angle γ1 of 145°-170°. For example, the angle γ1 can be 145°, 150°, 155°, 160°, 165°, or 170°.

[0109] In some embodiments, on the first predetermined cross-section, a three-point arc is fitted between the two endpoints of the outer wall of the first flexible body 113 and the midpoint of the first flexible body, with the center of the three-point arc serving as the center of the acoustic cavity. The angle γ1 formed by the line connecting the center of the acoustic cavity and the two endpoints of the first flexible body 113 is between 145° and 170° (inclusive), or greater than 170° and less than or equal to 178°. For example, the angle γ1 can be 145°, 150°, 155°, 160°, 165°, 170°, 172°, 175°, or 178°.

[0110] In some embodiments, referring to FIG. 11 , the plane where the outermost loop line of the end surface 113 a of the first flexible body 113 lies is the first reference plane A1. On a cross section perpendicular to the first reference plane A1 and passing through the center of the first reference plane A1, the two endpoints of the outer wall of the first flexible body 113 and the line connecting the midpoint 113 c of the outer wall of the first flexible body 113 form an angle β1 of 90°-100°. For example, the angle β1 can be 90°, 92°, 94°, 96°, 98°, or 100°.

[0111] In some embodiments, on the first preset cross-section, the two endpoints of the outer wall of the first flexible body 113 and the line connecting the midpoint 113c of the outer wall of the first flexible body 113 form an angle β1 of 90°-100°. For example, the angle β1 can be 90°, 92°, 94°, 96°, 98°, or 100°.

[0112] Setting the wrap angle of the first flexible body 113 in this way can satisfy the requirement that the contact area between the human ear and the first shell under most people or standard human head models covers the first flexible body 113, thereby ensuring comfort, and leaving more space for the first hard shell 111, thereby ensuring that the inner cavity volume is not excessively occupied by the silicone area.

[0113] In some embodiments, please refer to Figure 10 (Figure 10 shows the positions of two sound holes, one of which is marked 114 in the figure, and the other optional position is marked 114a in the figure). The plane where the outermost loop line of the end surface 113a of the first flexible body 113 is located is the first reference plane A1. On a cross section perpendicular to the first reference plane A1 and passing through the center of the first reference plane A1, the end of the first flexible body 113 closer to the ear hook 3 is the first end 113a, and the end farther away from the ear hook 3 is the second end 113b. The line connecting the first end 113a and the contact center of the outer wall of the first flexible body 113 and the line connecting the first end 113a to the center of the upper and lower positions of the sound hole 114 form an angle θ1 of 10°-85°. For example, the angle θ1 can be 10°, 20°, 30°, 50°, 70°, 80°, or 85°.

[0114] In some embodiments, on the first preset cross-section, the end of the first flexible body 113 closer to the ear hook 3 is the first end 113a, and the end farther away from the ear hook 3 is the second end 113b. The line connecting the first end 113a and the contact center of the outer wall of the first flexible body 113 and the line connecting the first end 113a and the center of the upper and lower positions of the sound hole 114 form an angle θ1 of 10°-85°. For example, the angle θ1 can be 10°, 20°, 30°, 50°, 70°, 80°, or 85°. By setting the position of the sound hole 114 in this way, the sound hole 114 can have better directionality to the ear hole, thereby obtaining a louder listening volume.

[0115] In some embodiments, the contact center area between the first shell 11 and the human head model is located in the area one-third of the distance between the end surface of the first flexible body 113 and the second end, and the angle between the line connecting the endpoint of the end of the first reference surface closer to the ear hook and the center of the sound hole 114 and the line connecting the endpoint of the end of the first reference surface closer to the ear hook and the contact center is between 10° and 85°.

[0116] When the first shell is approximately spherical, the connection tangent between the ear hook and the first shell is at 18°-35° to the first reference plane, and the distance between the tangent of the ear hook and the first reference plane is 6mm-8mm, the position of the sound hole 114 is set in this way, so that the normal direction of the sound hole 114 points to the ear hole, thereby obtaining a louder listening volume.

[0117] In some embodiments, the angle between the mounting plane of the speaker's diaphragm and the symmetrical plane in the length direction of the ear hook is less than 10°. Such a configuration allows the curve formed by the outer ring of the speaker cutting the first shell 11 and the concha cavity to form a wedge-shaped space. When the sound hole 114 is set along the curve, the sound hole 114 and the concha cavity can form a horn structure. Using the concha cavity as a reflective wall can form a horn effect, thereby increasing the listening volume.

[0118] In some embodiments, the first flexible body 113 and the second rigid shell 112 are integrally processed or fixedly connected to form an integral structure. Therefore, the two can be pre-processed into one component and then installed together on the first rigid shell 111.

[0119] In some embodiments, referring to Figure 14 , in a cross-section plane passing through the outermost loop of the end surface 113a of the first flexible body 113, the ratio of the two widths D11 and D12 of the first housing 11 in the orthogonal direction is between 0.8 and 1.2. In this embodiment, this 0.8-1.2 width ratio makes the entire first accommodating cavity 110 more spherical, resulting in a vibrator cavity that is more wearable, larger in volume, and easier to assemble.

[0120] In some embodiments, at the first predetermined cross-section, the ratio of the two widths D11 and D12 of the first shell 11 in the orthogonal direction is between 0.8 and 1.2. In this embodiment, the width ratio of 0.8-1.2 makes the entire first accommodating cavity 110 more spherical, resulting in a vibrator cavity that is more wearable, larger in volume, and easier to assemble.

[0121] In some embodiments, the thickness of the first flexible body 113 in the contact area with the cavum conchae when worn is greater than that in other areas. On the one hand, a greater thickness in the contact area can improve wearing comfort. On the other hand, a smaller thickness in other areas can help control the overall size of the sound-emitting portion 1.

[0122] In some embodiments, based on a standard human head model, the first shell 11 has a size and shape that does not block the wearer's ear holes when worn.

[0123] In some embodiments, the abutting portion 2 includes a second shell 21, which includes a third hard shell 211, a fourth hard shell 212 for being positioned toward the back of the wearer's ear when worn, and a second flexible body 213 for contacting the back of the wearer's ear. The third hard shell 211 and the fourth hard shell 212 together form a second accommodating cavity 210; the second flexible body 213 covers the outer wall of the fourth hard shell 212. Alternatively, the outer wall of the third hard shell 211 is not covered by the second flexible body 213 and is exposed, or the second flexible body 213 extends from the outer side of the fourth hard shell 212 to the outer side of the third hard shell 211 and covers a portion of the outer wall of the third hard shell 211, leaving the remaining outer wall of the third hard shell 211 exposed.

[0124] The ear clip-on headphone 100 according to the above embodiment includes a sound-emitting portion 1, an abutting portion 2, and an ear hook connected to the sound-emitting portion 1 and the abutting portion 2. The abutting portion 2 includes a third rigid shell 211, a fourth rigid shell 212, and a second flexible body 213. The third rigid shell 211 and the fourth rigid shell 212 enclose a second accommodating chamber 210. The third rigid shell 211 and the fourth rigid shell 212 provide better support for the internal structure. Typically, when worn, the fourth rigid shell 212 faces behind the wearer's ear. In this embodiment, the second flexible body 213 covers the outer wall of the fourth rigid shell 212 to reduce the possibility of direct contact between the fourth rigid shell 212 and the wearer's skin, thereby improving wearing comfort. Furthermore, in the abutting portion 2, the second flexible body 213 primarily covers the fourth rigid shell 212, substantially leaving the external structure and internal space of the third rigid shell 211 unaffected, thereby ensuring efficient utilization of the internal space of the third rigid shell 211.

[0125] Further, in some embodiments, please refer to Figures 2 and 14, the abutment portion 2 includes a second shell 21, the second shell 21 includes a third hard shell 211, a fourth hard shell 212 for being set toward the back of the wearer's ear when worn, and a second flexible body 213 for contacting the back of the wearer's ear, the third hard shell 211 and the fourth hard shell 212 enclose a second accommodating cavity 210; the second flexible body 213 covers the outer wall of the fourth hard shell 212, wherein the thickness of the area on the fourth hard shell 212 covered by the second flexible body 213 is less than the thickness of the third hard shell 211. The second flexible body 213 is covered on the outer wall of the fourth hard shell 212, so the fourth hard shell 212 part has a double-layer wall thickness. The second flexible body 213 is not covered on the outer wall of the third hard shell 211, so the third hard shell 211 part only needs a single-layer wall thickness, so that the third hard shell 211 part occupies a small volume of the second accommodating cavity 210, leaving more space for the battery, and can accommodate a larger battery to increase the battery life of the earphones.

[0126] Similar to the structure of the first hard shell 111 and the second hard shell 112, in some embodiments, the end of the third hard shell 211 is spliced ​​and fixed to the end of the fourth hard shell 212; the portion of the outer wall of the fourth hard shell 212 not blocked by the third hard shell 211 is covered by the second flexible body 213.

[0127] Similar to the structures of the first hard shell 111 and the second hard shell 112 , the second flexible body 213 extends from the outside of the fourth hard shell 212 to the outside of the third hard shell 211 and covers a portion of the outer wall of the third hard shell 211 .

[0128] Similar to the structure of the first hard shell 111 and the second hard shell 112, the end face of the second flexible body 213 extends to the end face of the third hard shell 211. Thanks to the flexible deformation characteristics of the second flexible body 213, the second flexible body 213 and the end face of the third hard shell 211 can cooperate to form a better sealing and waterproof effect.

[0129] Similar to the structure of the first hard shell 111 and the second hard shell 112 , a gap may also be provided between the end surface of the second flexible body 213 and the end surface of the third hard shell 211 , so that the second flexible body 213 has sufficient deformation space when being squeezed and deformed.

[0130] Similar to the structure of the first hard shell 111 and the second hard shell 112 , the end face of the second flexible body 213 is flush with the outermost ring line of the end face of the fourth hard shell 212 in the inner and outer directions, or the second flexible body 213 does not cover the outer wall of the third hard shell 211 .

[0131] Similar to the structure of the first rigid shell 111 and the second rigid shell 112, a gap is defined between the end faces of the third rigid shell 211 and the end faces of the fourth rigid shell 212. The second flexible body 213 extends into the gap and is clamped and secured by the end faces of the third rigid shell 211 and the end faces of the fourth rigid shell 212. This arrangement allows the second flexible body 213 to fit more tightly with the fourth rigid shell 212. Furthermore, the clamping action between the third rigid shell 211 and the fourth rigid shell 212 provides a better sealing and waterproofing effect.

[0132] Similar to the structure of the first hard shell 111 and the second hard shell 112, the end surface of the third hard shell 211 and the end surface of the fourth hard shell 212 are a pair of mutually adapted planes, inclined surfaces, step surfaces, folded surfaces and wavy surfaces, or a combination of at least two of them.

[0133] In some embodiments, the second housing 21 has an elongated structure. In a cross-section perpendicular to the length of the second housing 21, the ratio of the line connecting the two ends of the second flexible body 213 to the radial direction of the housing is greater than or equal to 0.9 and less than or equal to 1. In other words, the ratio of the line connecting the two ends of the second flexible body 213 to the maximum radial dimension of the housing is between 0.9 and 1. For example, the ratio can be 0.9, 0.92, 0.94, 0.96, 0.98, or 1. This arrangement limits the area covered by the second flexible body 213 covering the second housing 21 to a certain range. If the range is too small, the coverage area will be too small, causing the ear to touch the housing during use of the earphones. If the range of the second flexible body covering the second housing is too large, it will cause "over-coverage", and some parts of the housing that do not contact the ear will be covered, thereby compressing the space of the second accommodating cavity 210 and reducing space utilization. In the solution of the present application, the description of "between AB" and "between AB" includes the end value A and the end value B.

[0134] In some embodiments, referring to FIG. 15 , the second housing 21 has an elongated structure. In a cross-section perpendicular to the length of the second housing 21, the distance D13 from the midpoint of the outer wall of the second flexible body 213 to the tangent line of the ear hook 3 is 9 mm to 13 mm. This distance, greater than 9 mm, ensures that the ear hook 3 does not squeeze the auricle when the second housing 21 is inserted into the ear. Furthermore, this distance, no greater than 13 mm, limits the size of the earphones and prevents them from being too large, causing their center of gravity to stray too far from the outside of the body and making them prone to falling.

[0135] In some embodiments, referring to FIG. 17 , the third rigid shell 211 is a U-shaped structure, that is, the third rigid shell 211 includes a connecting wall 2111 and two side walls 2112, the two side walls 2112 being disposed at opposite ends of the connecting wall 2111, and the fourth rigid shell 212 being located between the two side walls 2112 of the U-shaped structure. The third rigid shell 211 includes an annular circumferential wall formed by the connecting wall 2111 and the fourth rigid shell 212 being joined to form the abutment portion 2. The connecting line of the two side walls is defined as the horizontal direction, and the direction perpendicular to the horizontal direction and away from the fourth rigid shell 212 is defined as the vertical direction. This arrangement ensures that when the third rigid shell 211 is shaken in the horizontal direction, an abutting force is generated on the side walls. In the vertical direction, a seam exists between the third rigid shell 211 and the fourth rigid shell 212. The longer the seam in this direction, the more difficult it is to separate the third rigid shell 211 and the fourth rigid shell 212 after gluing, thereby making the two shells more firmly and reliably bonded. In addition, the two side surfaces of the third rigid shell 211 are completely flat, so when arranging antennas or touch circuits, there is no need to arrange them across the shell, leaving ample space for the antennas and touch circuits, facilitating assembly. Because the second flexible body 213 only covers the fourth rigid shell 212, the U-shaped structure prevents the second flexible body 213 from extending into the area on the side of the third rigid shell 211 that is touched. This prevents the rubber layer from being severely abraded due to touch and other factors, and prevents debonding.

[0136] In some embodiments, referring to FIG. 17 , at least one sidewall of the U-shaped structure serves as a mounting base, upon which an antenna and / or a touch circuit board are mounted. The provision of at least one sidewall as a mounting base ensures that the antenna or touch circuit can be arranged without crossing the housing, leaving ample space for their placement and facilitating assembly. Because the second flexible body 213 only covers the fourth rigid housing, the U-shaped configuration prevents the second flexible body 213 from extending into the touch-sensitive area of ​​the side of the third rigid housing 211. This prevents further wear and tear on the second flexible body 213 due to touch control and other factors, preventing debonding.

[0137] In some embodiments, the third hard shell 211 and the fourth hard shell 212 are both provided with circular side walls and semi-cylindrical sides (also referred to as connecting walls), similar to an L-shaped structure. The bottom surfaces of the two shells are opposite to each other, and the semi-cylindrical sides complement each other to form a complete cylindrical cavity. In other words, the connecting wall of the third hard shell 211 and the connecting wall of the fourth hard shell 212 are spliced ​​to form the annular circumferential wall of the abutment portion 2. This arrangement not only retains the complete side walls to provide a position for installing the antenna and / or touch circuit board, but also makes the assembly method simpler and more direct, thereby increasing assembly efficiency. Among them, the side walls of the third hard shell 211 can be used as a mounting base for installing the antenna and / or touch circuit board, and the side walls of the fourth hard shell 212 can also be used as a mounting base for installing the antenna and / or touch circuit board. One of the side walls can be used as a mounting base, or both side walls can be used as a mounting base at the same time.

[0138] In some embodiments, please refer to Figure 18, the third hard shell 211 and the fourth hard shell 212 both have a cover-shaped structure, at least one side wall of the third hard shell 211 and at least one side wall of the fourth hard shell 212 are spliced ​​to form a mounting base, and the second flexible body 213 covers at least a portion of the mounting base.

[0139] In some embodiments, please refer to Figure 18, the third hard shell 211 and the fourth hard shell 212 can also form an integrated structure, the second flexible body 213 covers the fourth hard shell 212, and the second flexible body 213 has a side wall 2131, which can at least partially cover the side wall 2121 of the fourth hard shell 212.

[0140] In some embodiments, the second flexible body 213 covers the fourth hard shell 212 and the ear hook 3, and the second flexible body 213, the fourth hard shell 212 and the ear hook 3 are integrally injection molded. This production method enables the second flexible body 213 to cover the interface between the fourth hard shell 212 and the ear hook 3, which can prevent the interface between the fourth hard shell 212 and the ear hook 3 from leaking out, thereby increasing the reliability and aesthetics of the earphones.

[0141] In some embodiments, referring to Figures 1 and 15 , in a natural state, the sound-emitting portion 1 and the abutting portion 2 abut against each other, and the first flexible body 113 and the second flexible body 213 maintain contact. This contact maintains the preload, and when the wearer is removed from the wearer's wear state, the contact between the two flexible bodies cushions the impact between the sound-emitting portion 1 and the abutting portion 2.

[0142] In some embodiments, referring to Figures 1 and 20 , in the natural state, the outer wall of the second flexible body 213 has a concave surface 2130 facing the first flexible body 113. When the earphone 100 is in the natural state, the first flexible body 113 contacts at least a portion of the concave surface 2130. The concave surface is designed to accommodate the soft tissue behind the ear and the head opposite the ear, increasing the contact area, reducing pressure, and improving wearing comfort. Furthermore, the contact between the sound-emitting portion 1 and the concave surface can also reduce the impact force of the sudden change from the worn state to the natural state.

[0143] In some embodiments, in a cross section perpendicular to the length of the second housing 21, the depth L0 of the concave surface 2130 is between 0.07 and 0.25, for example, 0.07, 0.1, 0.15, 0.20, or 0.25. This depth of the concave surface 2130 can adapt to the shape of the soft tissue behind the ear and the head opposite the ear, increasing the contact area, reducing pressure, and improving wearing comfort.

[0144] In some embodiments, the second shell 21 has an elongated structure, and in a cross section perpendicular to the length direction of the second shell 21 and passing through the midpoint of the length direction, the concave outer wall of the second flexible body 213 is recessed toward the interior of the second shell 21 .

[0145] In other embodiments, the second housing 21 has an elongated structure, and the second flexible body 213, in a cross-section perpendicular to the length of the second housing 21 and passing through the midpoint of the length, is thin in the middle and thick at both ends. This arrangement allows the curvature of the second flexible body 213 near the ear to better conform to the design of the human ear, allowing the second housing 21 to contact the ear over a larger area, thereby reducing the pressure exerted by the earphone on the ear.

[0146] In some embodiments, referring to FIG. 15 , the second shell 21 has an elongated structure. In a cross-section perpendicular to the length of the second shell 21, the two ends of the second flexible body 213 (i.e., the two endpoints of the outer contour of the second flexible body 213) respectively form an angle δ1 greater than or equal to 160° with the line connecting the centroid of the second accommodating cavity 210. For example, the angle δ1 can be 160°, 165°, 170°, or 175°. If the range (angle) covered by the second flexible body is too small, the hard shell may contact the wearer's skin when worn, resulting in insufficient comfort.

[0147] In some embodiments, the second shell 21 has an elongated structure. In a cross section perpendicular to the length direction of the second shell 21, the centroid of the second accommodating cavity 210 and the line connecting the two endpoints of the outer contour line of the second flexible body 213 form an angle δ1 greater than or equal to 160°, or an angle δ1 greater than or equal to 145° and less than 160°. For example, the angle δ1 can be 145°, 150°, 160°, 165°, 170°, or 175°. If the range (angle) covered by the second flexible body is too small, the hard shell may contact the wearer's skin when worn, resulting in insufficient comfort.

[0148] In some embodiments, the second shell 21 has an elongated structure. In a cross-section perpendicular to the length of the second shell 21, the arc length of the second flexible body 213 (here, the arc length of the outer contour of the second flexible body 213) is greater than or equal to 18 mm. For example, the arc length can be 18 mm, 20 mm, 22 mm, 24 mm, or 25 mm. If the arc length of the outer contour of the second flexible body 213 is too small, the hard shell may contact the wearer's skin when worn, resulting in insufficient comfort.

[0149] In some embodiments, the second shell 21 has an elongated structure. In a cross-section perpendicular to the length of the second shell 21, the arc length of the outer contour of the second flexible body 213 is greater than or equal to 18 mm, or greater than or equal to 12 mm and less than 18 mm. For example, the arc length can be 12 mm, 14 mm, 16 mm, 18 mm, 20 mm, 22 mm, 24 mm, or 25 mm. If the arc length of the outer contour of the second flexible body 213 is too small, the hard shell may contact the wearer's skin when worn, resulting in insufficient comfort.

[0150] In some embodiments, please refer to Figure 2, the ear hook 3 has a supporting rib 31 and a third flexible body 32, the third flexible body 32 wraps the supporting rib 31, and the second flexible body 213 and the third flexible body 32 are an integrally molded structure. This setting can eliminate the parting line between the ear hook 3 and the abutting part 2, making the transition smoother and increasing the stability of the product connection.

[0151] In some embodiments, the second flexible body 213 and the third flexible body 32 are provided separately and do not contact each other, so that the third flexible body 32 and the second flexible body 213 can be prepared separately, reducing the complexity of the process. In other embodiments, the ear hook 3 can also omit the support rib 31.

[0152] In some embodiments, referring to FIG. 15 , the second housing 21 has an elongated structure. In a cross-section perpendicular to the length of the second housing 21, the outer wall of the second flexible body 213 has a first point Q1, a second point Q2, and a third point Q3 sequentially distributed along its arc length. The distance from the first point to the centroid of the second accommodating cavity 210 and the distance from the third point to the centroid of the second accommodating cavity 210 are both greater than the distance from the second point to the centroid of the second accommodating cavity 210. This arrangement can adapt to the shape of the soft tissue behind the ear and the head opposite the ear, increasing the contact area, reducing pressure, and improving wearing comfort.

[0153] In some embodiments, as shown in FIG15 , the second housing 21 has an elongated structure. In a cross-section perpendicular to the length of the second housing 21, the second point is located at the midpoint of the outer wall of the second flexible body 213. This arrangement can adapt to the shape of the soft tissue behind the ear and the head opposite the ear, increasing the contact area, reducing pressure, and improving wearing comfort.

[0154] In some embodiments, referring to FIG15 , the second housing 21 has an elongated structure. In a cross section perpendicular to the length of the second housing 21, the angle formed by the line connecting the first point to the centroid of the second accommodating cavity 210 and the line connecting the second point to the centroid of the second accommodating cavity 210 is equal to the angle formed by the line connecting the second point to the centroid of the second accommodating cavity 210 and the line connecting the third point to the centroid of the second accommodating cavity 210. This arrangement can adapt to the shape of the soft tissue behind the ear and the head opposite the ear, increase the contact area, reduce pressure, and improve wearing comfort.

[0155] In some embodiments, referring to FIG15 , the distance from the first point to the centroid of the second accommodating cavity 210 is equal to the distance from the third point to the centroid of the second accommodating cavity 210. This arrangement can adapt to the shape of the soft tissue behind the ear and the head opposite the ear, increasing the contact area, reducing pressure, and improving wearing comfort.

[0156] In some embodiments, the difference between the thickness of the second flexible body 213 at the first point and the thickness of the second flexible body 213 at the second point is between 0.2 mm and 0.5 mm, and / or the difference between the thickness of the second flexible body 213 at the third point and the thickness of the second flexible body 213 at the second point is between 0.2 mm and 0.5 mm. This configuration can adapt to the shape of the soft tissue behind the ear and the head opposite the ear, increase the contact area, reduce pressure, and improve wearing comfort.

[0157] In some embodiments, the difference between the thickness D14 of the second flexible body 213 at the first point Q1 and the thickness D15 of the second flexible body 213 at the second point Q2 is between 0.2 mm and 0.5 mm, or less than or equal to 0.2; and / or the difference between the thickness D16 of the second flexible body 213 at the third point Q3 and the thickness D15 of the second flexible body 213 at the second point Q2 is between 0.2 mm and 0.5 mm, or less than or equal to 0.2. This configuration can adapt to the shape of the soft tissue behind the ear and the head opposite the ear, increase the contact area, reduce pressure, and improve wearing comfort.

[0158] In some embodiments, referring to FIG. 15 , the thickness D14 of the second flexible body 213 at a first point is between 1.4 mm and 1.7 mm, and / or the thickness D15 of the second flexible body 213 at a second point is between 1.0 mm and 1.3 mm, and / or the thickness D16 of the second flexible body 213 at a third point is between 1.4 mm and 1.7 mm. This thickness is perpendicular to the normal direction of the outer wall. This configuration is intended to adapt to the shape of the soft tissue behind the ear and the head opposite the ear, increasing the contact area, reducing pressure, and improving wearing comfort.

[0159] In some embodiments, referring to FIG. 15 , the thickness D14 of the second flexible body 213 at a first point is between 1.4 mm and 1.7 mm, or greater than or equal to 0.3 mm and less than or equal to 1.4 mm; and / or the thickness D15 of the second flexible body 213 at a second point is between 1.0 mm and 1.3 mm, or greater than or equal to 0.2 mm and less than or equal to 1.3 mm; and / or the thickness D16 of the second flexible body 213 at a third point is between 1.4 mm and 1.7 mm, or greater than or equal to 0.3 mm and less than or equal to 1.4 mm. This thickness direction is perpendicular to the normal direction of the outer wall. This configuration is intended to adapt to the shape of the soft tissue behind the ear and the head opposite the ear, increase the contact area, reduce pressure, and improve wearing comfort.

[0160] In some embodiments, referring to FIG15 , a line connecting the first point to the centroid of the second accommodating cavity 210 and a line connecting the third point to the centroid of the second accommodating cavity 210 form an angle δ2 of 165°-175°. For example, angle δ2 can be 165°, 168°, 172°, or 175°. This configuration can adapt to the shape of the soft tissue behind the ear and the head opposite the ear, increase the contact area, reduce pressure, and improve wearing comfort.

[0161] In some embodiments, a line connecting the first point to the centroid of the second accommodating cavity 210 and a line connecting the third point to the centroid of the second accommodating cavity 210 form an angle δ2 of 165°-175°, or an angle δ2 greater than or equal to 90° and less than 165°. For example, angle δ2 can be 90°, 100°, 110°, 120°, 130°, 140°, 150°, 165°, 168°, 172°, or 175°. This configuration can adapt to the shape of the soft tissue behind the ear and the head opposite the ear, increase the contact area, reduce pressure, and improve wearing comfort.

[0162] In some embodiments, the second accommodating cavity 210 is a battery cavity, and the abutting portion 2 includes a battery, which is accommodated in the battery cavity.

[0163] In some embodiments, the ear hook 3 has an ear hook symmetry plane A2 along its length, and the ear hook symmetry plane A2 intersects with the outermost loop of the end surface of the second flexible body 213 to form two intersection points. The outer wall of the abutting portion 2 has a third reference point O3, and the distance between the third reference point O3 and the outer wall of the sound-emitting portion 1 is the shortest. The angle δ3 formed by the line connecting the third reference point O3 and the two intersection points is between 80° and 130°. For example, the angle δ3 can be 80°, 90°, 100°, 110°, 120°, or 130°.

[0164] In some embodiments, when the earphone 100 is in a natural state (i.e., not subject to external forces), the sound-emitting portion 1 and the abutting portion 2 are spaced apart on the earhook symmetry plane A2. In this case, the third reference point O3 may refer to the endpoint of the shortest line between the sound-emitting portion 1 and the abutting portion 2 on the abutting portion 2. In some embodiments, when the earphone is in a natural state (i.e., not subject to external forces), the sound-emitting portion 1 and the abutting portion 2 abut against each other on the earhook symmetry plane A2. In this case, the third reference point O3 may refer to the midpoint of the arc segment formed on the earhook symmetry plane A2 by the abutting area of ​​the sound-emitting portion 1 and the abutting portion 2.

[0165] Setting the wrap angle of the second flexible body 213 in this way can meet the requirement that the contact area between the human ear and the second shell 21 of most people or standard human head models is covered with the second flexible body 213, thereby ensuring comfort, and leaving more space for the third hard shell 211, thereby ensuring that the inner cavity volume is not excessively occupied by the silicone area.

[0166] Please refer to Figures 101 to 108. It should be noted that the angle markings in the following content, such as α, β, and γ, all correspond to the angle markings in Figures 101 to 108.

[0167] It should be noted that the material of the first flexible body 113 and the second flexible body 213 is not limited to silicone, rubber, elastic resin, polyurethane, polydimethylsiloxane, PVC, TPE and the like, and any flexible material can be used.

[0168] In some embodiments, the output volume of the earphone at the user's ear canal opening can be adjusted by changing the position of the sound outlet in the sound-emitting portion. Generally, the higher the output volume of the earphone at the ear canal opening, the louder the sound experienced by the user at the same output power, which can reduce energy consumption and sound leakage.

[0169] In some embodiments, as shown in FIG101 , a sound outlet 114 is provided on the first shell 11, and the sound generated by the sound-emitting component 12 is output outwardly through the sound outlet 114. The ear hook 3 has an ear hook symmetry plane A2 provided along its length. The angle α formed between the central axis of the sound outlet 114 and the ear hook symmetry plane A2 is between 15° and 45°, and is located below the ear hook symmetry plane A2 when worn. By setting the angle α formed between the central axis of the sound outlet 114 and the ear hook symmetry plane A2 between 15° and 45°, the sound outlet 114 has better directionality to the ear hole when worn, which is beneficial to improving the listening effect.

[0170] In some embodiments, the sound hole 114 can be in the shape of an elongated strip. Please refer to Figures 101 and 102, where the sound hole is arranged perpendicular to the symmetric plane of the ear hook (that is, the long axis of the sound hole is perpendicular or nearly perpendicular to the symmetric plane of the ear hook, that is, an error within 15° is allowed, which can also be referred to as a longitudinal arrangement of the sound hole). In this case, the sound hole 114 can be arranged on the portion of the first hard shell 111 that is not covered by the first flexible body 113, so as to avoid the sound hole 114 spanning the first hard shell 111 and the second hard shell 112 at the same time. Define the angle between the normal line pointing from the sound-emitting part of the earphone sound hole to the outside (the normal line refers to the central axis of the sound hole 114) and the ear hook symmetric plane A2 as α, and the angle between the ear hook symmetric plane A2 and the horizontal plane of the human body as β. As shown in Figure 104, fix α = 0° (that is, the ear hook symmetry plane passes through the central axis of the sound outlet), adjust the β angle to -20°, 0°, and 45° respectively, and measure the frequency response curve of the headphone output sound at the ear canal opening, where the horizontal axis represents the output frequency band of the headphone (Hz) and the vertical axis is the measured sound pressure level SPL (dB).

[0171] Further, please refer to Figure 105, fix β = 0° (that is, the wearing state in which the ear hook symmetry plane is parallel to the horizontal plane of the human body), adjust the α angle to -30°, -15°, 0°, 15°, 30°, 45°, and 60° respectively, and measure the frequency response curve of the headphone output sound at the ear canal opening. It can be seen from the figure that when α is in the range of 15°-45°, the sound pressure level SPL of the measured headphone frequency response curve is the highest, that is, the output volume is the largest.

[0172] In addition, when wearing ear clip headphones, due to the influence of gravity, β is usually between 0°-30°. Therefore, when the sound outlet is set to β = 0° (i.e., the wearing state in which the ear hook symmetry plane is parallel to the horizontal plane of the human body), the angle α between the normal line of the sound outlet (the normal line refers to the central axis of the sound hole 114) and the ear hook symmetry plane A2 is 15°-45°. This can increase the listening volume in the wearing scenario in which β is between 0° and 30°. (This is equivalent to adjusting the α = 0°, β = 45° line in xx-2 to a volume close to α = 0°, β = 0°).

[0173] In some embodiments, as shown in Figure 22, the sound outlet 114 is arranged in a strip shape, and has a first end 1141 and a second end 1142 arranged at intervals along the length direction of the sound outlet 114. When worn, the first end 1141 is arranged toward the ear hole, and the distance L1 between the outer wall of the first shell 11 at the second end 1142 and the inner wall surface of the cavum concha is smaller than the distance L1 between the outer wall of the first shell 11 at the first end 1141 and the inner wall surface of the cavum concha.

[0174] Further, referring to FIG106 , the sound hole 114 can be arranged horizontally (that is, the long axis of the sound hole is parallel or nearly parallel to the symmetry plane of the ear hook, that is, an error within 15° is allowed). In this case, as shown in FIG22 , the sound hole 114 can be arranged on the second hard shell 112 and the first flexible body 113 to avoid the sound hole 114 spanning the first hard shell 111 and the second hard shell 112 at the same time. Rotate the longitudinally arranged sound hole mentioned above 90° along its central symmetry axis, and rotate the normal straight line of the sound hole from the sound-emitting part to the outside toward the midpoint of the short side of the sound hole closer to the ear canal opening. The angle swept by this rotation process is defined as γ. As shown in Figure 107, the gradient of γ is set to 0°, 15°, 30°, 37.5°, 45°, and 60°, and the frequency response curves of the sound output at the ear canal are measured. It can be seen from the figure that as the angle γ of the sound outlet increases (that is, the sound outlet continues to rotate inward toward the ear canal), the SPL first increases and then decreases. In the value range of 30°-45°, it can be considered that the measured sound pressure level at the ear canal is better than that in other sections, and the sound pressure level does not change significantly in this value range (the sound pressure level curves of 30°, 37.5°, and 45° are close), that is, the value of γ can be 30°-45°.

[0175] The changing trends in the headphone output sound pressure level (SPL) in Figures 107-A and 107-B can be explained by the "horn effect." As shown in Figures 108-A and 108-B, the depth of the gray area represents the magnitude of the sound pressure level. When a point sound source in space radiates sound to the surrounding area, if there is a reflecting wall near the direction of sound propagation, compared to the free field, the reflected field at some locations near the sound source will form a sound reinforcement zone due to interference and diffraction between the reflected sound waves and the source sound waves.

[0176] Define the straight-line distance from the center of the sound source to the reflecting wall as h-gap, and the angle between the normal line from the sound outlet to the outside and the line from the center of the sound source to the reflecting wall as θ. Figures 109A-109C show the simulation results when the h-gap values ​​are 5mm, 10mm, 15mm, and 20mm, and the θ values ​​are 0°, 60°, 120°, 180°, 240°, and 300°, respectively, and the sound source signal is 2000Hz. The isobaric sound pressure level line diagram is used as the result. The results show that the closer the sound source is to the reflecting surface, the louder the sound is near the reflecting wall. When the normal line from the sound outlet to the outside is obliquely pointed at the reflecting wall (60°, 300°), the maximum sound pressure level (the area of ​​the high sound pressure level region) can be produced on one side, and the high sound pressure level region on this side can be regarded as the listening position.

[0177] In this application, the sound-emitting part can be considered as a point sound source wrapped by a shell, and a sound outlet is opened on the shell. The concha cavity opposite to the sound outlet can be considered as a reflective wall. Therefore, when the sound outlet is as close to the concha cavity as possible and the sound outlet position is located on one side, the maximum output sound pressure level can be obtained at the ear hole listening position.

[0178] Figure 110 shows sound leakage curves for different sound hole positions. In the test environment, sound leakage refers to the sound extending from the ear canal perpendicular to the human sagittal plane to a point 30mm from the ear canal. This volume can be measured using a microphone. Under the optimized solution, the horizontal sound hole solution (γ = 37.5°) reduces sound leakage by approximately 2dB compared to the original vertical sound hole solution.

[0179] The above specific examples are used to illustrate the present application, which is only used to help understand the present application and is not intended to limit the present application. For those skilled in the art of the present application, based on the concept of the present application, they can also make some simple deductions, modifications or substitutions.

Claims

1. An ear clip type earphone, characterized in that: The ear clip earphone comprises a sound-generating part for inserting into the wearer's concha cavity, an abutting part for abutting against the back of the wearer's ear, and an ear hook connecting the sound-generating part and the abutting part, wherein the abutting part and the sound-generating part form a clamping state so that the ear clip earphone is clamped and worn on the wearer's auricle; the sound-generating part comprises a first shell and a sound-generating component, wherein the first shell has a first accommodating cavity, and the sound-generating component is arranged in the first accommodating cavity; a sound outlet hole is arranged on the first shell, and the sound generated by the sound outlet hole is output through the sound outlet hole, and the ear hook has an ear hook symmetry plane arranged along its length direction, and the angle formed between the central axis of the sound outlet hole and the ear hook symmetry plane is between 15° and 45°, and the sound outlet hole is located on the lower side of the ear hook symmetry plane when worn.

2. The ear-clip earphone according to claim 1, characterized in that: When the ear hook is worn, the angle formed between the ear hook symmetry plane and the wearer's body horizontal plane is between 0° and 30°.

3. The ear-clip earphone according to claim 1, characterized in that: The sound-generating component includes a middle mounting bracket and two speakers, the two speakers are mounted on the middle mounting bracket together, a sound transmission channel is formed between the diaphragms of the two speakers, and the central axis of the sound outlet passes through the sound transmission channel.

4. The ear-clip earphone according to claim 3, characterized in that: A protruding structure is arranged on one side of the mounting bracket, and the sound transmission channel is further arranged on the protruding structure.

5. The ear-clip earphone according to claim 4, characterized in that: The inner wall of the first shell is provided with a groove, and the groove is used to accommodate the protruding structure.

6. The ear-clip headphone according to claim 1, characterized in that: The sound-generating component includes a speaker, and the angle between the mounting plane where the diaphragm of the speaker is located and the symmetry plane of the ear hook is less than 10°.

7. The ear-clip headphone according to claim 1, characterized in that: The sound outlet hole is arranged in a strip shape, and the length direction of the sound outlet hole is perpendicular or nearly perpendicular to the ear hook symmetry plane.

8. The ear-clip earphone according to claim 7, characterized in that: The first shell includes a first hard shell, a second hard shell and a first flexible body, the first hard shell is connected to the ear hook, the second hard shell is arranged close to the concha cavity when worn, the first flexible body covers the outer wall of the second hard shell, wherein the outer wall of the first hard shell is not covered with the first flexible body and is exposed, or the first flexible body extends from the outer side of the second hard shell to the outer side of the first hard shell and covers a part of the outer wall of the first hard shell, so that the rest of the outer wall of the first hard shell is exposed; the sound outlet is arranged in the first hard shell.

9. The ear-clip headphone according to claim 1, characterized in that: The sound outlet hole is arranged in a strip shape and has a first end and a second end arranged at intervals along the length direction of the sound outlet hole. In the wearing state, the first end is arranged toward the ear hole, and the distance between the outer wall of the first shell at the second end and the inner wall surface of the cavum concha is smaller than the distance between the outer wall of the first shell at the first end and the inner wall surface of the cavum concha.

10. The ear-clip headphone according to claim 9, characterized in that: The length direction of the sound outlet is parallel or nearly parallel to the ear hook symmetry plane.

11. The ear-clip earphone according to claim 9, characterized in that: The first shell includes a first hard shell, a second hard shell and a first flexible body, the first hard shell is connected to the ear hook, the second hard shell is arranged close to the concha cavity when worn, the first flexible body covers the outer wall of the second hard shell, wherein the outer wall of the first hard shell is not covered with the first flexible body and is exposed, or the first flexible body extends from the outer side of the second hard shell to the outer side of the first hard shell and covers a part of the outer wall of the first hard shell, so that the remaining outer wall of the first hard shell is exposed; the sound outlet is arranged in the second hard shell and the first flexible body.

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