Ear clip type earphone

Abstract

The embodiment of the invention provides an ear clip type earphone, which comprises a sound production part, an abutting part and an ear hook connected with the sound production part and the abutting part, the abutting part and the sound production part form a clamping state so as to clamp and wear the ear clip type earphone on a helix of a wearer, and the sound production part comprises a first shell and a second shell, the first hard shell is connected with the ear hook, the second hard shell is used for facing the auricular conchae of a wearer during wearing, the first flexible body is used for making contact with the auricular conchae of the wearer, and a first containing cavity is defined by the first hard shell and the second hard shell; the first flexible body covers the outer wall of the second hard shell; the sound production assembly is arranged in the first containing cavity, the first shell is provided with a sound outlet hole, and sound waves emitted by the sound production assembly can be transmitted to a wearer through the sound outlet hole.

Description

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

[0002] This application relates to the field of sound - generating devices, and more particularly to an ear - clip type earphone. Background Art

[0003] Earphones have been widely used in people's daily lives and can be used in conjunction with electronic devices such as mobile phones and computers to provide a sound - playing function for users. Among them, ear - clip type earphones are a new type of earphones. They are usually small in size and can be clipped on the wearer's earlobe for use, providing a more comfortable wearing experience.

[0004] The housing of ear - clip type earphones can be made of hard materials or flexible materials. The housing made of hard materials has deficiencies in comfort, while the flexible materials have poor support for the internal structure. Therefore, how to balance comfort and support is an issue that needs further optimization for current ear - clip type earphones. Summary of the Invention

[0005] This application provides an ear - clip type earphone to show a structure that can balance comfort and support.

[0006] An ear - clip type earphone provided in an embodiment of this application includes a sound - generating part for inserting into the wearer's concha, a contact part for abutting against the back of the wearer's ear, and an ear hook connecting the sound - generating part and the contact part. The contact part and the sound - generating part form a clamping state to clamp the ear - clip type earphone on the wearer's earlobe. The sound - generating part includes: a first housing, the first housing includes a first rigid housing connected to the ear hook, a second rigid housing arranged towards the wearer's concha during wearing, and a first flexible body for contacting the wearer's concha. The first rigid housing and the second rigid housing enclose a first accommodation cavity; the first flexible body covers the outer wall of the second rigid housing; and a sound - generating component, the sound - generating component is arranged in the first accommodation cavity, the first housing has a sound outlet hole, and the sound wave emitted by the sound - generating component can be transmitted to the wearer through the sound outlet hole; wherein the outer wall of the first rigid housing is not covered with the first flexible body and is in an exposed state, or the first flexible body extends from the outside of the second rigid housing to the outside of the first rigid housing and covers a part of the outer wall of the first rigid housing, so that the remaining outer wall of the first rigid housing is in an exposed state.

[0007] The earclip-type earphone according to the above embodiment includes a sound-emitting part, a butting part, and an earhook connecting the sound-emitting part and the butting part. The sound-emitting part includes a first housing and a sound-emitting component. The first housing includes a first rigid housing, a second rigid housing, and a first flexible body. The first rigid housing and the second rigid housing enclose a first accommodating cavity, and the sound-emitting component is disposed in the first accommodating cavity. The first rigid housing and the second rigid housing can provide better support to support the internal structure. Usually when worn, the second rigid housing faces the concha of the wearer. In this embodiment, the first flexible body is covered on the outer wall of the second rigid housing to reduce the possibility of the second rigid housing directly contacting the skin of the wearer and improve the comfort of wearing the earphone. At the same time, in the first housing, the first flexible body mainly covers the second rigid housing, basically does not affect the external structure and internal space of the first rigid housing, and ensures the utilization rate of the internal space of the first rigid housing. Brief Description of the Drawings

[0008] Figure 1 It is a schematic diagram of the external structure of the earclip-type earphone in an embodiment of the present application;

[0009] Figure 2 It is a cross-sectional view taken along the length direction of the earhook in an embodiment of the present application;

[0010] Figure 3 It is a cross-sectional view of the sound-emitting part in an embodiment of the present application, and at this time the sound-emitting part has two speakers;

[0011] Figures 4 - 7 It is a schematic diagram of the butt joint of the first rigid housing, the second rigid housing, and the first flexible body in several different embodiments of the present application, and can also be used as a schematic diagram of the butt joint surface of the third rigid housing, the fourth rigid housing, and the second flexible body;

[0012] Figures 8 - 12 It is a cross-sectional view of the sound-emitting part in several different embodiments of the present application;

[0013] Figure 13 It is a cross-sectional view of the sound-emitting part when the sound-emitting part has one speaker in an embodiment of the present application;

[0014] Figure 14 It is a cross-sectional view of the sound-emitting part from another perspective in an embodiment of the present application;

[0015] Figure 15 It is a cross-sectional view taken along the length direction of the earhook in an embodiment of the present application;

[0016] Figure 16 It is a cross-sectional view of the third rigid housing, the fourth rigid housing, and the second flexible body in several different embodiments of the present application;

[0017] Figure 17Exploded view of the abutting part in an embodiment of the present application;

[0018] Figure 18 Exploded view of the abutting part in another embodiment of the present application;

[0019] Figure 19 Cross-sectional view taken along the length direction of the earhook in another embodiment of the present application;

[0020] Figure 20 Schematic three-dimensional structure diagram of the earphone in another embodiment of the present application;

[0021] Figure 21 Cross-sectional view taken along the length direction of the earhook in another embodiment of the present application;

[0022] Figure 22 Cross-sectional view of the sound generating part in another embodiment of the present application;

[0023] Figure 23 Schematic diagram of the sound outlet hole setting position and wearing state of the present application;

[0024] Figure 24 Schematic diagram of the wearing state at different β angles of the present application;

[0025] Figure 25 Anthropometric reference plane of the present application;

[0026] Figure 26 Frequency response curve graph at the ear canal opening corresponding to different β angles when α is 0 in the present application;

[0027] Figure 27 Frequency response curve graph at the ear canal opening corresponding to different α angles when β is 0 in the present application;

[0028] Figure 28 Schematic diagram of the wearing state at different γ angles when the sound outlet hole is set horizontally in the present application;

[0029] Figure 29 - A Frequency response curve graph at the ear canal opening corresponding to different γ angle setting gradients in the present application;

[0030] Figure 29 - B For the present application Figure 29 - A Local enlarged view of the curve;

[0031] Figure 30 - A Schematic diagram of the "free field" sound field in the "horn effect" of the present application;

[0032] Figure 30 - B Schematic diagram of the "reflection field" sound field in the "horn effect" of the present application;

[0033] Figure 31 - A Equal sound pressure level line graph under different value conditions of θ and h-gap in the present application;

[0034] Figure 31 - B This is the equal sound pressure level contour map under different value conditions of θ and h-gap in this application;

[0035] Figure 31 - C This is the equal sound pressure level contour map under different value conditions of θ and h-gap in this application;

[0036] Figure 32 The sound leakage curve under different sound outlet hole setting positions. Detailed implementation manners

[0037] The following further details this application in conjunction with the accompanying drawings through specific implementation manners. Similar elements in different implementation manners adopt related similar element numbers. In the following implementation manners, many detailed descriptions are provided to enable a better understanding of this application. However, those skilled in the art can easily recognize that some of these features can be omitted in different situations, or can be replaced by other elements, materials, or methods. In some cases, some operations related to this application are not shown or described in the specification to avoid overwhelming the core part of this application with excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0038] In addition, the features, operations, or characteristics described in the specification can be combined in any appropriate manner to form various implementation manners. At the same time, the steps or actions in the method description can also be reordered or adjusted in an obvious manner by those skilled in the art. Therefore, the various sequences in the specification and drawings are only for clearly describing a certain embodiment and do not mean that they are the necessary sequences, unless it is stated that a certain sequence must be followed.

[0039] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, both include direct and indirect connection (coupling).

[0040] Please refer to Figure 1, this application provides an earclip-type earphone 100, which includes a sound-emitting part 1 for inserting into the concha of the wearer, a contact part 2 for abutting against the back of the wearer's ear, and an earhook 3 connecting the sound-emitting part 1 and the contact part 2. The sound-emitting part 1 is a sound-playing device, which is used to convert an electrical signal into a sound signal and play it to the wearer. The contact part 2 and the sound-emitting part 1 form a clamping state so as to clamp and wear the entire earphone on the user's helix. Specifically, the sound-emitting part 1 can abut against the inner wall of the concha, and the contact part 2 can abut against the back of the ear, so that the earphone bypasses the helix and is clamped and worn on the user's ear. In some embodiments, the contact part 2 can be used as a battery compartment for installing a battery or other components. Of course, the contact part 2 can also not be used as a battery compartment, and the battery can be installed in the sound-emitting part 1.

[0041] In one embodiment, please refer to Figure 2 , the sound-emitting part 1 includes a first housing 11 and a sound-emitting component 12. The sound-emitting component 12 is a module capable of converting an electrical signal into a sound signal, usually a speaker. Among them, the speaker in the sound-emitting component 12 can be one or more than two.

[0042] Please refer to Figure 2 , the first housing 11 includes a first rigid housing 111 connected to the earhook 3, a second rigid housing 112 for being arranged towards the concha of the wearer during wearing, and a first flexible body 113 for contacting the concha of the wearer. The rigid material can be plastic, metal or other supporting materials that can be used as the earphone housing to provide better support and stability for the internal structure of the first housing 11, such as the sound-emitting component 12. The first rigid housing 111 and the second rigid housing 112 enclose a first accommodation cavity 110, and the sound-emitting component 12 is arranged in the first accommodation cavity 110. The first housing 11 has a sound outlet hole 114, and the sound wave emitted by the sound-emitting component 12 can be transmitted to the wearer through the sound outlet hole 114. The first flexible body 113 covers the outer wall of the second rigid housing 112, and the first flexible body 113 can be made of silica gel or other skin-friendly flexible materials to improve the comfort when the sound-emitting part 1 contacts the wearer.

[0043] The first rigid housing 111 and the second rigid housing 112 can provide better support to support the internal structure. Usually during wearing, the second rigid housing 112 will face the concha of the wearer. In this embodiment, the first flexible body 113 is covered on the outer wall of the second rigid housing 112 to reduce the possibility of the second rigid housing 112 directly contacting the wearer's skin and improve the comfort of wearing the earphone.

[0044] Meanwhile, in the first housing 11, the first flexible body 113 mainly covers the second rigid housing 112, and basically does not affect the external structure and internal space of the first rigid housing 111, ensuring the utilization rate of the internal space of the first rigid housing 111. Specifically, the first flexible body 113 is coated on the outer wall of the second rigid housing 112. Therefore, the second rigid housing 112 has a double-layer wall thickness in part, and the outer wall of the first rigid housing 111 is not coated with the first flexible body 113 and is in a bare state, or the first flexible body 113 extends from the outside of the second rigid housing 112 to the outside of the first rigid housing 111, and only a part of the first rigid housing 111 close to the second rigid housing 112 is coated with the first flexible body 113, and the rest is in a bare state. Therefore, the first rigid housing 111 only needs a single-layer wall thickness, so that the first rigid housing 111 occupies a small volume of the first accommodating cavity 110, leaving a large space for the sound generating component 12, and a sound generating component 12 with a larger oscillator can be placed to form a better acoustic effect.

[0045] Please refer to Figure 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 rigid housing 112 is greater than or equal to 80% of the curve length segment of the second rigid housing 112 (here, it refers to the outer contour line of the second rigid housing 112), for example, it can be 80%, 85%, 90%, 95%, or 100%, to ensure that the first flexible body 113 can cover a large enough area on the second rigid housing 112 to reduce or eliminate the possibility of direct contact between the wearer and the second rigid housing 112.

[0046] In some embodiments, please refer to Figure 2 and 13 , the earhook symmetry plane A2 of the earhook 3 (marked in Figure 14The outermost loop line of the end face of the first flexible body 113 has two intersection points, and the section perpendicular to the ear hook symmetry plane A2 and passing through the two intersection points can also be used as the first reference plane A1. On the section perpendicular to the first reference plane A1 and passing through 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 refers to the outer contour line of the second hard shell 112), for example, it can be 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, so 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. Among them, the ear hook symmetry plane A2 refers to a plane that is symmetrical to the left and right 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 in 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.

[0047] In some embodiments, please refer to Figure 3 , on the first preset cross-section, 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, the outer contour line of the second hard shell 112), for example, it can be 80%, 85%, 90%, 95%, or 100%. In the description of this application, unless otherwise specified, the "first preset 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 face of the first flexible body 113, or it may refer to the ear hook symmetry plane A2; the "first reference plane A1" may refer to the plane where the outermost loop of the end face of the first flexible body 113 is located. In addition, the ear hook symmetry plane A2 (marked on Figure 14 The outermost loop of the end surface of the first flexible body 113 intersects with two intersection points, and the "first reference plane A1" may also refer to a cross section perpendicular to the ear hook symmetry plane A2 and passing through the 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.

[0048] For some examples, please refer to Figures 4 - 7, the end of the second rigid housing 112 is spliced and fixed to the end of the first rigid housing 111. The end of the second rigid housing 112 and the end of the first rigid housing 111 are fixed by splicing to form a reliable and small-sized fixation, which is also convenient for assembly and reduces the assembly process.

[0049] Specifically, during the production and processing of the earphone, in order to ensure a more firm connection between the first flexible body 113 (usually made of silica gel material) and the second rigid housing 112, it is necessary to injection-mold the first flexible body 113 on the basis of the second rigid housing 112. If the first flexible body 113 has a relatively large length spanning the splicing position of the first rigid housing and the second rigid housing 112, usually the injection molding can only be carried out after the speaker is installed in the first housing and the splicing is completed. At this time, the internal components of the first housing will be damaged by the high temperature during the injection molding process, which is not conducive to improving the product qualification rate. Therefore, most areas of the first flexible body 113 are arranged on the second rigid housing 112, and the silica gel can be injection-molded on the second rigid housing 112 first and then assembled, which not only simplifies the process but also avoids the damage to the speaker caused by injection molding after assembly.

[0050] In some embodiments, please refer to Figure 3 , the part of the outer wall of the second rigid housing 112 not blocked by the first rigid housing 111 is covered by the first flexible body 113. Since the area of the first housing 11 in contact with the wearer usually concentrates on the second rigid housing 112, this structure can ensure that there is no exposed area on the second rigid housing 112, and the wearer does not directly contact the second rigid housing 112, further improving the wearing comfort.

[0051] In some embodiments, please refer to Figure 5 and 6 , the first flexible body 113 extends from the outside of the second rigid housing 112 to the outside of the first rigid housing 111 and covers a part of the outer wall of the first rigid housing 111. The joint between the first rigid housing 111 and the second rigid housing 112 is usually a stress concentration part. A part of the outer wall of the first rigid housing 111 is covered by the first flexible body 113, so that the first flexible body 113 is fixed on both the first rigid housing 111 and the second rigid housing 112 at the same time, which further increases the firmness of the first rigid housing 111 and the second rigid housing 112 and also forms a certain protection for the stress concentration part. In addition, the first flexible body 113 can also wrap a part of the area of the first rigid housing 111 close to the second rigid housing 112, so that when the wearer touches this area, they do not directly contact the second rigid housing 112, improving the comfort. Moreover, the first flexible body 113 can also cover the joint between the first rigid housing 111 and the second rigid housing 112, improving the sealing and waterproof effect.

[0052] In some embodiments, please refer to Figure 4 and 7 , the first flexible body 113 does not cover the outer wall of the first rigid housing 111, so that the first flexible body 113 does not squeeze the internal space of the first rigid housing 111, ensuring that the first rigid housing 111 has a larger internal space.

[0053] In some embodiments, please refer to Figure 5 , the end face 113a of the first flexible body 113 extends to the end face 111a of the first rigid housing 111, that is, the end face 113a of the first flexible body 113 abuts against the end face 111a of the first rigid housing 111. Through the flexible deformation characteristic of the first flexible body 113, a better sealing and waterproof effect can be formed with the end face 111a of the first rigid housing 111.

[0054] In some embodiments, there is a gap between the end face 113a of the first flexible body 113 and the end face 111a of the first rigid housing 111, so as to provide a deformation space for the first flexible body 113 when the first flexible body 113 is compressed and generates a micro-deformation.

[0055] In some embodiments, please refer to Figure 4 , the end face 113a of the first flexible body 113 and the outermost loop line of the end face 113a of the first flexible body 113 are flush in the inner and outer directions. The inner side refers to the side of the first housing 11 where the first accommodation cavity 110 is located, and the outer side refers to the outer side of the first housing 11 away from the first accommodation cavity 110.

[0056] In some embodiments, there is a gap between the end face 111a of the first rigid housing 111 and the end face 112a of the second rigid housing 112. A part 113b of the first flexible body 113 extends into the gap and is clamped and fixed by the end face 111a of the first rigid housing 111 and the end face 112a of the second rigid housing 112. In this embodiment, the first flexible body 113 can be more firmly attached to the second rigid housing 112 to form a more secure fitting method than relying only on adhesion. At the same time, in addition to providing a more comfortable contact feeling, the first flexible body 113 can also form a better sealing and waterproof effect through the clamping action of the first rigid housing 111 and the second rigid housing 112.

[0057] In the above embodiments, the end face 111a of the first rigid housing 111 and the end face 112a of the second rigid housing 112 are one or at least two combinations of a pair of mutually adapted flat surfaces, inclined surfaces, stepped surfaces, folded surfaces, and wavy surfaces, so as to better realize the splicing of the first rigid housing 111 and the second rigid housing 112 and ensure the sealing and waterproof effect. The end faces of the first rigid housing 111 and the second rigid housing 112 are mutually adapted, which is convenient for bonding and fixing the contact surfaces. Further, through a more complex contact surface design, such as a stepped surface, the bonding surface area can be increased to further improve the firmness. Furthermore, through the combination of various end face configurations, a multi-directional and more firm bonding structure can be formed.

[0058] Further, in some embodiments, please refer to Figure 3 , the sound generating component 12 is installed on the second rigid housing 112, and the end of the sound generating component 12 facing the first rigid housing 111 protrudes from the second rigid housing 112. In this embodiment, by making full use of the parting structure of the first rigid housing 111 and the second rigid housing 112, the sound generating component 12 is first installed on the second rigid housing 112, and then the second rigid housing 112 together with the components thereon is fixed to the first rigid housing 111, which can reduce the processing difficulty, improve the processing efficiency and the yield rate.

[0059] Further, the sound outlet hole 114 can be provided on the first rigid housing 111 (as shown in Figure 3 ), or can be provided on the second rigid housing 112 and the first flexible body 113 (as shown in Figure 8 ), or can also be formed by the splicing of the first rigid housing 111 and the second rigid housing 112 (as shown in Figure 9 ).

[0060] In some embodiments, the sound outlet hole 114 is provided on the part of the first rigid housing 111 that is not covered by the first flexible body 113. In this way, the sound outlet hole 114 does not need to penetrate both the first rigid housing 111 and the second rigid housing 112 at the same time, which can avoid the uneven surface of the sound outlet hole 114, thereby affecting the installation of the sound tuning net and the steel net. And setting it on the first rigid housing 111 does not require opening a hole on the first flexible body 113, nor does it need to consider the influence of the first flexible body 113 on the sound outlet hole 114, which can reduce the design and production costs.

[0061] In addition, since a larger internal accommodation space can be formed at the first rigid housing 111, a positioning boss can be provided at the sound outlet hole 114 of the diaphragm mounting bracket without excessively increasing the external dimensions of the first housing 11, thereby improving the opening degree of the ear canal and the safety and comfort of using the earclip-type earphone.

[0062] In some embodiments, please refer to Figure 3, the central axis A3 of the sound outlet hole 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°. Such a setting can ensure that the sound outlet hole 114 does not span two shells, and at the same time is relatively close to the ear hole, increasing the listening volume.

[0063] In some embodiments, please refer to Figure 3 , the distance D5 from the end of the sound outlet hole 114 close to the second rigid shell 112 to the first reference plane A1 is 1 mm - 3 mm. For example, 1 mm, 1.5 mm, 2 mm, 2.5 mm, or 3 mm. Such a setting can ensure that the sound outlet hole 114 does not span two shells, and at the same time is relatively close to the ear hole, and leaves space for the glue path between the sound outlet net and the first rigid shell 111 and the mounting bracket 123 of the vibrating diaphragm of the speaker in the first rigid shell 111.

[0064] In some embodiments, please refer to Figure 3 , the first rigid shell 111 has a region facing the wearer's ear hole during wearing, and the sound outlet hole 114 is at least partially located within the region, so that the propagation direction of the sound is as much as possible towards the ear canal, ensuring that the sound from the sound outlet hole 114 can penetrate into the wearer's ear hole more timely and accurately, achieving better listening effect and volume, and improving the headphone sound quality effect.

[0065] In some embodiments, please refer to Figure 3 , the sound generating component 12 has a vibrating diaphragm 124, and the mounting plane of the outer edge of the diaphragm of the vibrating diaphragm 124 (as Figure 3 shown, the edge of the vibrating diaphragm 124 abuts against the mounting bracket 123, and the mounting plane of the outer edge of the diaphragm of the vibrating diaphragm 124 refers to the plane where the abutting position is located) forms an angle of 3° - 9° with the first reference plane A1. For example, this angle can be 3°, 5°, 7°, or 9°. In this way, after the speaker is assembled with the first rigid shell 111 and the second rigid shell 112, it can be assembled with the first rigid shell 111 again. A single speaker does not span the parting line between the first rigid shell 111 and the second rigid shell 112, which is convenient for assembly. And such a setting can make the contact point between the concha and the first flexible body 113 close to the center on the premise that the sound outlet hole 114 faces the ear hole, which can adapt to a wider range of people and reduce the probability of the concha contacting the rigid shell.

[0066] In some embodiments, please refer to Figure 19, the earhook 3 has an earhook symmetry plane A2 disposed along its length direction, the sound generating assembly 12 has a diaphragm 124, and the included angle between the mounting plane of the outer edge of the diaphragm 124 and the earhook symmetry plane A2 is less than 10°. Such a setting can make the curve formed by the outer circle of the speaker cutting the first housing 11 and the concha can form a kind of wedge-shaped space. When the sound outlet hole 114 is arranged along this curve, the sound outlet hole 114 and the concha can form a horn structure, and the concha can be used as a reflection wall surface to form a horn effect, thereby increasing the listening volume.

[0067] The sound outlet hole 114 can be arranged on the second rigid housing 112 and the first flexible body 113. In this way, the sound outlet hole 114 can be closer to the earhole, which is beneficial to improving the listening effect. Moreover, the sound outlet hole 114 does not need to straddle the first rigid housing 111 and the second rigid housing 112 at the same time.

[0068] The sound outlet hole 114 can be strip-shaped, and the length direction is parallel or nearly parallel to the earhook symmetry plane A2. The central axis A3 of the sound outlet hole 114 can form an included angle α11 of 40° - 80° with the first reference plane A1. For example, α11 can be 40°, 50°, 60°, 70°, or 80 degrees. In this way, the sound outlet hole 114 and the concha can form a horn structure, and the concha can be used as a reflection wall surface to form a horn effect, thereby increasing the listening volume. The "parallel or nearly parallel" described in this application means that the length direction of the sound outlet hole 114 is parallel to the earhook symmetry plane A2, and an error within plus or minus 15° is allowed.

[0069] The sound outlet hole 114 can be strip-shaped, and the length direction is parallel or nearly parallel to the earhook symmetry plane A2; the distance from the end of the sound outlet hole close to the first rigid housing to the first reference plane can be 1 mm - 4 mm, such as 1 mm, 2 mm, 2.5 mm, 3 mm, or 4 mm. In this way, the sound outlet hole 114 can be relatively close to the earhole, which is beneficial to enhancing the horn effect. In addition, it can also prevent the sound outlet hole 114 from straddling two housings.

[0070] In some embodiments, please refer to Figure 3 , the widest part of the radius of the sound generating assembly 12 is located within the first rigid housing 111. Since the first flexible body 113 is not provided on the first rigid housing 111 or only partially provided, the space of the first rigid housing 111 is larger than that of the second rigid housing 112. Setting the widest part 125 of the radius of the sound generating assembly 12 within the first rigid housing 111 allows for the selection of a sound generating assembly 12 with a larger oscillator to obtain better sound quality. Compared with the method of setting the widest part 125 of the radius of the sound generating assembly 12 opposite to the first flexible body 113, this method can make full use of the inner cavity space. Here, the radius of the sound generating assembly 12 refers to the radius formed based on the radial direction of the diaphragm in the speaker.

[0071] In some embodiments, please refer to Figure 3 , the sound generating component 12 has a mounting bracket 123. A convex structure (i.e., the structure indicated by 125) is provided on one side of the mounting bracket 123. The convex structure has a sound transmission channel communicating with the speaker in the sound generating component 12. Generally, the sound transmission channel needs to be at least partially aligned with the sound outlet hole 114. Therefore, in this embodiment, the widest part 125 of the sound generating component 12 in terms of radius is the position where the convex structure is located. The convex structure is arranged in the first rigid housing 111, making full use of the space in the first rigid housing 111 so as to be able to set a larger sound generating component 12 with an oscillator.

[0072] In some embodiments, please refer to Figure 3 , in the radial direction of the sound generating component 12, the first flexible body 113 is not provided in the area towards which the widest part 125 of the sound generating component 12 in terms of radius faces. That is, it is avoided that the internal space of the first rigid housing 111 is squeezed due to the covering of the first flexible body 113, ensuring that the first rigid housing 111 has a larger internal space available for use.

[0073] In some embodiments, please refer to Figure 3 , the first rigid housing 111 has a groove, and the widest part 125 of the sound generating component 12 in terms of radius is received in the groove. By providing a groove on the inner wall of the first rigid housing 111, the internal space of the first rigid housing 111 can be expanded, and then a larger sound generating component 12 can be placed.

[0074] In some embodiments, the groove can be used to accommodate the positioning boss on the mounting bracket. The positioning boss can also serve as a sound outlet channel on the mounting bracket for guiding sound to the sound outlet hole 114.

[0075] Furthermore, the sound generating component 12 can have one or more than two speakers. Based on the reasonable utilization of the internal space of the first rigid housing 111, there can be various forms of the placement of the sound generating component 12.

[0076] In some embodiments, please refer to Figure 3 , the magnetic conductive cover 122 of at least one speaker is located in the second rigid housing 112 and faces the second rigid housing 112. The magnetic conductive cover has an end face 1221 facing the second rigid housing 112, and the end face 1221 is a flat surface.

[0077] Furthermore, in some embodiments, please refer to Figure 3, the plane where the outermost loop of the end face 113a 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 end face 112a of the magnetic conduction cover 122 facing the second rigid housing 112, the curvature radius of the area on the second rigid housing 112 (here it refers to the outer contour line of the second rigid housing 112) opposite to the end face 1221 of the magnetic conduction cover 122 is greater than the curvature radii of at least some other areas on both sides of it. In this way, the curvature of the second rigid housing 112 at this place can be set smaller, so as to leave more space for the corresponding part of the first flexible body 113 on the outside, and increase the thickness of the first flexible body 113 at this place without increasing the overall thickness of the first housing 11. This area is close to the contact center (that is, the center position on the first flexible body 113 that contacts the wearer), and setting a larger thickness can improve the wearing comfort.

[0078] In some embodiments, please refer to Figure 3 , on the second preset cross-section, the curvature radius of the area on the second rigid housing 112 (here it refers to the outer contour line of the second rigid housing 112) opposite to the end face 1221 of the magnetic conduction cover 122 is greater than the curvature radii of at least some other areas on both sides of it. In the description of this application, without special explanation, the "second preset cross-section" can refer to the cross-section perpendicular to the first reference plane A1 and passing through the center of the end face 112a of the magnetic conduction cover 122 facing the second rigid housing 112, or it can refer to the earhook symmetry plane A2. In this way, the curvature of the second rigid housing 112 at this place can be set smaller, so as to leave more space for the first flexible body 113 on the outside, and increase the thickness of the first flexible body 113 at this place without increasing the overall thickness of the first housing 11.

[0079] In some embodiments, please refer to Figure 3 , the plane where the outermost loop of the end face 113a 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 end face 112a of the magnetic conduction cover 122 facing the second rigid housing 112, the curvature radius R2 of the area on the first flexible body 113 (here it refers to the outer contour line of the first flexible body 113) opposite to the magnetic conduction cover 122 is 6 mm - 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 (that is, the center position on the first flexible body 113 that contacts the wearer), and setting a larger curvature radius can increase the contact area and improve the comfort.

[0080] In some embodiments, please refer to Figure 3, on the second preset cross-section, the curvature radius R2 of the region on the first flexible body 113 (here it refers to the outer contour line of the first flexible body 113) opposite to the magnetic conductive cover 122 is 6 mm - 18 mm. For example, R2 can be 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, or 18 mm. This region is close to the contact center. Setting a larger curvature radius can increase the contact area and improve comfort.

[0081] In some embodiments, please refer to Figure 3 , the plane where the outermost loop line of the end face 113a 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 end face 112a of the magnetic conductive cover 122 facing the second rigid housing 112, the thickness of the region on the first flexible body 113 opposite to the end face of the magnetic conductive cover 122 is 0.8 mm - 2 mm. For example, it can be 0.8 mm, 1.0 mm, 1.5 mm, or 2.0 mm. This region is close to the contact center. Setting a relatively thick silicone can improve comfort.

[0082] In some embodiments, please refer to Figure 3 , on the second preset cross-section, the thickness of the region on the first flexible body 113 opposite to the end face of the magnetic conductive cover 122 is 0.8 mm - 2 mm. For example, it can be 0.8 mm, 1.0 mm, 1.5 mm, or 2.0 mm. This region is close to the contact center. Setting a relatively thick silicone can improve comfort.

[0083] In some embodiments, please refer to Figure 19 , on the first preset cross-section, the curvature radius of the predetermined region C1 on the outer contour line of the first flexible body 113 is greater than the curvature radii of at least some of the other regions located on both sides of it. This predetermined region C1 is close to the contact center C2 between the first flexible body 113 and the concha (that is, the central position on the first flexible body 113 that contacts the wearer. For example, Figure 19 as shown, in some embodiments, the distance between the contact center C2 and one end of the first flexible body 113 close to the ear hook 3 is approximately one-third of the length of the outer contour line of the first flexible body 113). Since the predetermined region C1 is close to the contact center C2, by setting the predetermined region C1 to have a larger curvature radius, the contact area with the concha can be increased and the wearing comfort can be improved.

[0084] The curvature radius of the predetermined region C1 can be 6 mm - 18 mm. For example, it can be 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, or 18 mm. This region is close to the contact center C2 (that is, the central position on the first flexible body 113 that contacts the wearer). Setting a larger curvature radius can increase the contact area and improve comfort.

[0085] The thickness of the first flexible body 113 within the predetermined area C1 can be 0.2 mm - 1 mm. For example, it can be 0.2 mm, 0.5 mm, 0.8 mm, or 1.0 mm. By setting the thickness of the first flexible body 113 within the predetermined area C1 in this way, it is possible to ensure the wearing comfort on the premise of avoiding increasing the overall size of the first housing.

[0086] In some embodiments, please refer to Figure 3 , the sound - generating component 12 includes an intermediate mounting bracket 123 (i.e., a specific form of the mounting bracket 123 for dual speakers), and two speakers. The two speakers are commonly mounted 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 hole 114 passes through the sound - transmission channel 1231. The design of the dual - speaker solution increases the area of the diaphragm 124 while occupying the same radial area, improves the BL value of the speaker under the same volume, so that a higher sound efficiency can be obtained. Moreover, the central axis A3 of the sound - outlet hole 114 passes through the sound - transmission channel 1231, making the path for the sound to exit the first accommodating cavity 110 more open and direct.

[0087] Among them, in some embodiments, please refer to Figure 3 , the sound - transmission channel 1231 is the common front cavity of the two speakers. In this embodiment, the structure of the common front cavity can further reduce the volume occupied by the dual speakers.

[0088] In some of these embodiments, the sound - transmission channel 1231 is the common back cavity of the two speakers, and a waterproof and breathable membrane is provided on the sound - outlet hole 114 and / or the sound - transmission channel 1231. The structure of the common back cavity can further reduce the volume occupied by the dual speakers; providing a waterproof and breathable membrane on the sound - outlet hole 114 and / or the sound - transmission channel 1231 can prevent water and dust as much as possible without affecting the sound quality significantly, increasing the reliability of the earphone.

[0089] In some embodiments, please refer to Figure 3 , the outermost loop - shaped line plane of the end face 113a of the first flexible body 113 is the first reference plane A1. On the 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 angle α2 formed by the connection lines between the center of the mounting bracket 123 and the two ends of the first flexible body 113 is 130° - 160°. For example, the angle α2 can be 130°, 140°, 150°, 160°. By setting the covering range of the first flexible body 113 in this way, the contact point between the concha and the silicone section can be set closer to the center, thereby reducing the probability of contact between the human ear and the hard - shell section.

[0090] In some embodiments, please refer to Figure 3, 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 connecting lines between the center of the mounting bracket 123 and both ends of the first flexible body 113 form an included angle α2 of 130° - 160°, or form an included angle α2 greater than 160° and less than or equal to 170°. For example, the included angle α2 can be 130°, 140°, 150°, 160°, or 170°. By setting the coverage range of the first flexible body 113 in this way, the contact point between the concha and the silicone section can be set closer to the center, further reducing the probability of the human ear contacting the hard shell section.

[0091] In some embodiments, please refer to Figure 10 , the sound generating assembly 12 includes an intermediate mounting bracket 123 (i.e., a specific structure of the mounting bracket applied to a dual speaker) and two speakers, and the two speakers are commonly mounted on the intermediate mounting bracket 123; wherein, the connecting line A4 between the centers of the magnetic shields 122 of the two speakers penetrates through the first rigid housing 111, or the connecting line A4 between the centers of the magnetic shields 122 of the two speakers does not pass through the second rigid housing 112 and the first flexible body 113. In this embodiment, the center of the entire sound generating assembly 12 can be made closer to the first rigid housing 111, thereby making more full use of the internal space of the first rigid housing 111.

[0092] In some embodiments, please refer to Figure 8 , one side of the widest part in the diameter direction and one side of the widest part in the axial direction of the sound generating assembly 12 are both arranged opposite to the first rigid housing 111.

[0093] In some embodiments, please refer to Figure 3 , both sides of the widest part in the axial direction of the sound generating assembly 12 are arranged opposite to the first rigid housing 111. Since the space of the first rigid housing 111 is larger than that of the second rigid housing 112, by arranging both sides of the widest part in the axial direction of the sound generating assembly 12 opposite to the first rigid housing 111, a sound generating assembly 12 with a larger oscillator can be selected to obtain better sound quality.

[0094] In some embodiments, please refer to Figure 8 , the sound generating assembly 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 surface of the mounting bracket 123 facing away from the magnetic shield 122 and the first reference plane A1 is 0.4 mm - 2 mm. For example, this distance can be 0.4 mm, 0.8 mm, 1.2 mm, 1.5 mm, or 2 mm. The first reference plane A1 is the plane where the outermost loop line of the end face 113a of the first flexible body 113 is located; or there are two intersection points between the earhook symmetry plane A2 of the earhook 3 and the outermost loop line of the end face 113a of the first flexible body 113, and the first reference plane A1 is the plane perpendicular to the earhook symmetry plane A2 and passing through the two intersection points.

[0095] In some embodiments, the sound generating assembly 12 includes a mounting bracket 123 and at least one speaker. The speaker is mounted on the mounting bracket 123. The distance between the center 1232 of the surface of the mounting bracket 123 facing away from the magnetic conductive 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, this distance can be 0.4 mm, 0.8 mm, 1.2 mm, 1.5 mm, 2 mm, 2.5 mm, or 3 mm.

[0096] By setting the position of the sound generating assembly in the first housing 11 in this way, more volume of the sound generating assembly can be distributed towards the first rigid housing 111, thereby making full use of the relatively abundant internal space of the first rigid housing 111, so that the first housing 11 can accommodate a sound generating unit with a larger volume.

[0097] In some embodiments, as Figure 19 shown, the ear hook 3 has an ear hook symmetry plane A2 arranged along its length direction. The ear hook symmetry plane A2 intersects 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. The inner contour line has a first reference point O1 in the area close to the wearer's helix. The inner contour line has a local maximum curvature at the first reference point O1. The included angle α12 formed by the connection lines between the first reference point O1 and the two intersection points is less than or equal to 15°. For example, α12 can be 3°, 5°, 8°, 11°, or 15°.

[0098] In some embodiments, as Figure 19 shown, the ear hook 3 has an ear hook symmetry plane A2 arranged along its length direction. The ear hook symmetry plane A2 intersects 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 outer wall of the sound generating part 1 has a second reference point O2. The distance between the second reference point O2 and the outer wall of the abutting part 2 is the shortest. The included angle α13 formed by the connection lines between the second reference point O2 and the two intersection points is between 85° and 115°. For example, α13 can be 85°, 90°, 100°, 105°, or 115°.

[0099] In some embodiments, when the earphone is in a natural state (i.e., without external force intervention), on the earhook symmetry plane A2, the sound generating part 1 and the abutting part 2 are arranged at intervals. At this time, the second reference point O2 may refer to the end point of the shortest connection line between the sound generating part 1 and the abutting part 2 on the sound generating part 1. In some embodiments, when the earphone is in a natural state (i.e., without external force intervention), on the earhook symmetry plane A2, the sound generating part 1 and the abutting part 2 are in mutual abutment. At this time, the second reference point O2 may refer to the midpoint of the arc segment formed by the abutting area of the sound generating part 1 and the abutting part 2 on the earhook symmetry plane A2. By setting the wrap angle of the first flexible body 113 in this way, it can be ensured that the contact area between the human ear and the first housing in most people or the standard head model covers the first flexible body 113, thus ensuring comfort and taking into account leaving more space for the first rigid housing 111, so as to ensure that the inner cavity volume will not be overly occupied by the silicone area.

[0100] In some embodiments, please refer to Figure 10 , the tangent line of the earhook 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 face 113a of the first flexible body 113 is located; or the earhook symmetry plane A2 of the earhook 3 has two intersection points with the outermost loop line of the end face 113a of the first flexible body 113, and the first reference plane A1 is the plane perpendicular to the earhook symmetry plane A2 and passing through the two intersection points.

[0101] By setting the connection positional relationship between the earhook 3 and the first housing 11 in this way, it can be made that the extending direction of the earhook 3 after the earphone is worn is approximately parallel to the extending direction of the helix, reducing the degree of extrusion between the earhook 3 and the helix or avoiding extruding the helix, thereby improving the wearing comfort of the earclip-type earphone.

[0102] In some embodiments, please refer to Figure 10 , the distance D10 between the tangent line of the earhook 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 face 113a of the first flexible body 113 is located; or the earhook symmetry plane A2 of the earhook 3 has two intersection points with the outermost loop line of the end face 113a of the first flexible body 113, and the first reference plane A1 is the plane perpendicular to the earhook symmetry plane A2 and passing through the two intersection points.

[0103] In some embodiments, please refer to Figure 3 , the plane where the outermost loop line of the end face 113a 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 length of the first flexible body 113 (specifically referring to the length of the outer contour line of the first flexible body 113) is 16 mm - 25 mm. For example, it can be 16 mm, 19 mm, 21 mm, 23 mm, or 25 mm.

[0104] In some embodiments, please refer to Figure 3 , on the first preset cross-section, the length of the outer contour line of the first flexible body is 16 mm - 25 mm. For example, it can be 16 mm, 19 mm, 21 mm, 23 mm, or 25 mm.

[0105] By setting the length of the outer contour line of the first flexible body 113 in this way, it is beneficial to avoid direct contact between the rigid housing and the skin during the wearing state, thus ensuring wearing comfort and taking into account leaving more space for the first rigid housing 111, so as to ensure that the inner cavity volume will not be overly occupied by the silicone area.

[0106] In some embodiments, please refer to Figure 11 , the plane where the outermost loop line of the end face 113a 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 end of the first flexible body 113 closer to the earhook 3 is the first end 113a, and the end farther from the earhook 3 is the second end 113b. In the area D8 at one-third of the end face of the first flexible body 113 away from the second end 113b, its thickness in 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.

[0107] In some embodiments, please refer to Figure 11 , on the first preset cross-section, the end of the first flexible body 113 closer to the earhook 3 is the first end 113a, and the end farther from the earhook 3 is the second end 113b. In the area D8 at one-third of the end face of the first flexible body 113 away from the second end 113b, its thickness in 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.

[0108] According to the standard human head model, when the first housing 11 is nearly spherical, the connection tangent line between the earhook and the first housing 11 and the first reference plane are at 18° - 35°, the distance between the tangent line of the earhook and the first reference plane is 6 mm - 8 mm, and the length of the first flexible body is 16 mm - 25 mm, the contact center area between the first housing 11 and the human head model is located in the area at one-third of the end face of the first flexible body away from the second end. By setting the thickness of the first flexible body at this position, the contact center area can be made closer to the midpoint of the length of the first flexible body, reducing the probability of the human ear contacting the rigid housing and taking into account reducing the volume of the first housing 11 to ensure the effect of open-air listening.

[0109] In some embodiments, please refer to Figure 19, the contact center area C2 between the first housing 11 and the human head model is located at the area one-third of the end face of the first flexible body 113 away from the first end 113a. At this time, on the first preset section, in the area one-third of the end face of the first flexible body 113 away from the first end 113a, the thickness in the outer wall normal direction 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. By setting the thickness of the first flexible body at this location, the contact center area can be made closer to the midpoint of the length of the first flexible body, reducing the probability of the human ear contacting the hard housing, and taking into account reducing the volume of the first housing 11 to ensure the effect of open-air listening.

[0110] In some embodiments, please refer to Figure 12 , the plane of the outermost loop of the end face 113a of the first flexible body 113 is the first reference plane A1. On the 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 endpoints of the outer wall of the first flexible body 113 and the midpoint of the first flexible body 113. The angle γ1 formed by the connection line of the centers of the three-point arcs as the sound cavity center is 145° - 170°. For example, the angle γ1 can be 145°, 150°, 155°, 160°, 165°, or 170°.

[0111] In some embodiments, on the first preset section, a three-point arc is fitted according to the two endpoints of the outer wall of the first flexible body 113 and the midpoint of the first flexible body 113. The angle γ1 formed by the connection lines between the sound cavity center and the two endpoints of the first flexible body 113 is between 145° and 170° (including the endpoint values), 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°.

[0112] In some embodiments, please refer to Figure 11 , the plane of the outermost loop of the end face 113a of the first flexible body 113 is the first reference plane A1. On the 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 are respectively connected to the midpoint 113c of the outer wall of the first flexible body 113 to form an angle β1 of 90° - 100°. For example, the angle β1 can be 90°, 92°, 94°, 96°, 98°, or 100°.

[0113] 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°.

[0114] 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.

[0115] For some examples, please refer to Figure 10 ( Figure 10 The positions of two sound outlet holes are shown in the figure, one of which is marked 114 in the figure, and the other is optionally 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 the 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 to 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 outlet hole 114 form an angle θ1 of 10°-85°. For example, the angle θ1 can be 10°, 20°, 30°, 50°, 70°, 80°, or 85°.

[0116] 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 to 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°. By setting the position of the sound hole 114 in this way, the sound hole 114 can have better directivity to the ear hole, thereby obtaining a louder listening volume.

[0117] In some embodiments, the contact center area between the first shell 11 and the human head model is located in an 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 plane closer to the ear hook and the center of the sound outlet 114 and the line connecting the endpoint of the end of the first reference plane closer to the ear hook and the contact center is between 10°-85°.

[0118] When the first shell is a near-spherical shape, the connection tangent between the ear hook and the first shell is at 18°-35° with 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.

[0119] In some embodiments, the angle between the mounting plane where the diaphragm of the speaker is located and the symmetry 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 arranged along the curve, the sound hole 114 and the concha cavity can form a horn structure. The concha cavity can be used as a reflective wall to form a horn effect, thereby increasing the listening volume.

[0120] In some embodiments, the first flexible body 113 and the second hard shell 112 are integrally processed or fixedly connected as an integral structure. Therefore, the two can be pre-processed into one component and then installed on the first hard shell 111 together.

[0121] For some examples, please refer to Figure 14 , on the cross section of the plane where the outermost loop line of the end surface 113a of the first flexible body 113 is located, the ratio of the two widths D11 and D12 of the first shell 11 in the orthogonal direction is between 0.8-1.2. In this embodiment, the width ratio of 0.8-1.2 makes the entire first accommodating cavity 110 closer to a spherical shape, so as to obtain a vibrator cavity that is more suitable for wearing, has a larger volume, and is easy to assemble.

[0122] In some embodiments, on the first preset 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 closer to a sphere, so as to obtain a vibrator cavity that is more suitable for wearing, has a larger volume, and is easy to assemble.

[0123] In some embodiments, the thickness of the contact area of ​​the first flexible body 113 that contacts the concha cavity when worn is greater than the thickness of other areas. On the one hand, setting a larger thickness in the contact area can improve wearing comfort. On the other hand, setting the thickness of other areas to be relatively small is conducive to controlling the overall size of the sound-emitting part 1.

[0124] 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.

[0125] In some embodiments, the abutting portion 2 includes a second housing 21. The second housing 21 includes a third rigid housing 211, a fourth rigid housing 212 disposed towards the back of the wearer's ear during wearing, and a second flexible body 213 for contacting the back of the wearer's ear. The third rigid housing 211 and the fourth rigid housing 212 enclose a second accommodation cavity 210. The second flexible body 213 covers the outer wall of the fourth rigid housing 212. Among them, the outer wall of the third rigid housing 211 is not covered by the second flexible body 213 and is in an exposed state, or the second flexible body 213 extends from the outside of the fourth rigid housing 212 to the outside of the third rigid housing 211 and covers a part of the outer wall of the third rigid housing 211, so that the remaining outer wall of the third rigid housing 211 is in an exposed state.

[0126] According to the ear clip-type earphone 100 of the above embodiment, it includes a sound generating portion 1, an abutting portion 2, and an ear hook connecting the sound generating portion 1 and the abutting portion 2. The abutting portion 2 includes a third rigid housing 211, a fourth rigid housing 212, and a second flexible body 213. The third rigid housing 211 and the fourth rigid housing 212 enclose a second accommodation cavity 210. The third rigid housing 211 and the fourth rigid housing 212 can provide better support to support the internal structure. Usually during wearing, the fourth rigid housing 212 faces the back of the wearer's ear. In this embodiment, the second flexible body 213 is covered on the outer wall of the fourth rigid housing 212 to reduce the possibility of the fourth rigid housing 212 directly contacting the wearer's skin and improve the comfort of wearing the earphone. At the same time, in the abutting portion 2, the second flexible body 213 mainly covers the fourth rigid housing 212, and basically does not affect the external structure and internal space of the third rigid housing 211, ensuring the utilization rate of the internal space of the third rigid housing 211.

[0127] Further, in some embodiments, please refer to Figure 2 and 14, the abutting portion 2 includes a second housing 21. The second housing 21 includes a third rigid housing 211, a fourth rigid housing 212 arranged to face the back of the wearer's ear during wearing, and a second flexible body 213 for contacting the back of the wearer's ear. The third rigid housing 211 and the fourth rigid housing 212 enclose a second accommodation cavity 210; the second flexible body 213 covers the outer wall of the fourth rigid housing 212. Among them, the thickness of the area of the fourth rigid housing 212 covered by the second flexible body 213 is less than the thickness of the third rigid housing 211. The second flexible body 213 is coated on the outer wall of the fourth rigid housing 212, so the fourth rigid housing 212 has a double-layer wall thickness in part. The outer wall of the third rigid housing 211 is not coated with the second flexible body 213, so the third rigid housing 211 only requires a single-layer wall thickness in part, making the volume of the part of the third rigid housing 211 occupying the second accommodation cavity 210 small and leaving a large space for the battery, so that a larger battery can be placed to increase the battery life of the earphone.

[0128] Similar to the structure of the first rigid housing 111 and the second rigid housing 112, in some embodiments, the end of the third rigid housing 211 is spliced and fixed to the end of the fourth rigid housing 212; the part of the outer wall of the fourth rigid housing 212 not blocked by the third rigid housing 211 is covered by the second flexible body 213.

[0129] Similar to the structure of the first rigid housing 111 and the second rigid housing 112, the second flexible body 213 extends from the outside of the fourth rigid housing 212 to the outside of the third rigid housing 211 and covers a part of the outer wall of the third rigid housing 211.

[0130] Similar to the structure of the first rigid housing 111 and the second rigid housing 112, the end face of the second flexible body 213 extends to the end face of the third rigid housing 211. Thanks to the flexible deformation characteristics of the second flexible body 213, the cooperation between the second flexible body 213 and the end face of the third rigid housing 211 can form a good sealing and waterproof effect.

[0131] Similar to the structure of the first rigid housing 111 and the second rigid housing 112, or there may also be a gap between the end face of the second flexible body 213 and the end face of the third rigid housing 211 so that the second flexible body 213 has enough deformation space when being squeezed and deformed.

[0132] Similar to the structure of the first rigid housing 111 and the second rigid housing 112, the outermost loop line of the end face of the second flexible body 213 and the end face of the fourth rigid housing 212 is flush in the inner and outer directions, or the second flexible body 213 does not cover the outer wall of the third rigid housing 211.

[0133] Similar to the structure of the first rigid housing 111 and the second rigid housing 112, there is a gap between the end face of the third rigid housing 211 and the end face of the fourth rigid housing 212. The second flexible body 213 extends into the gap and is clamped and fixed by the end face of the third rigid housing 211 and the end face of the fourth rigid housing 212. Such a matching method can make the second flexible body 213 fit more closely with the fourth rigid housing 212. At the same time, through the clamping action between the third rigid housing 211 and the fourth rigid housing 212, a better sealing and waterproof effect can also be formed.

[0134] Similar to the structure of the first rigid housing 111 and the second rigid housing 112, the end face of the third rigid housing 211 and the end face of the fourth rigid housing 212 are one or at least two combinations of a pair of mutually adapted flat surfaces, inclined surfaces, stepped surfaces, folded surfaces, and wavy surfaces.

[0135] In some embodiments, the second housing 21 has a long strip structure. In a cross-section perpendicular to the length direction of the second housing 21, the ratio of the connection line between 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. That is to say, the ratio of the connection line between the two ends of the second flexible body 213 to the maximum radial dimension of the housing is between 0.9 - 1. For example, this ratio can be 0.9, 0.92, 0.94, 0.96, 0.98, or 1. This setting method limits the covering area of the second flexible body 213 covering the second housing 21 to a certain range. If the range is too small, the covered area will be too small, causing the ear to touch the housing during the use of the earphone. If the range of the second flexible body covering the second housing is too large, it will cause "over-covering", and the housing that does not contact the ear will also be covered, compressing the space of the second accommodation cavity 210 and reducing the space utilization rate. In the solution of the present application, the description between A - B, located between A - B, includes the end values A and B.

[0136] In some embodiments, please refer to Figure 15 , the second housing 21 has a long strip structure. In a cross-section perpendicular to the length direction 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 - 13 mm. This distance value greater than 9 mm ensures that after the second housing 21 is inserted into the wearing position in the ear, the ear hook 3 will not squeeze the helix. And this distance not exceeding 13 mm limits the volume of the earphone, preventing the earphone from being too large in shape and causing the center of gravity to deviate too far from the outside of the human body, resulting in the earphone being easily dropped.

[0137] In some embodiments, please refer to Figure 17, the third rigid housing 211 is in a U-shaped structure. That is to say, the third rigid housing 211 includes a connecting wall 2111 and two side walls 2112. The two side walls 2112 are arranged at opposite ends of the connecting wall 2111. The fourth rigid housing 212 is located between the two side walls 2112 of the U-shaped structure. The third rigid housing 211 includes an annular peripheral wall of the abutting portion 2 formed by splicing the connecting wall 2111 and the fourth rigid housing 212. Define the direction of the connection line of the two side walls as the horizontal direction, and the direction perpendicular to the horizontal direction and away from the fourth rigid housing 212 as the vertical direction. This setting method makes the third rigid housing 211 generate a resisting force on the side wall when shaking in the horizontal direction, and there is a joint between the third rigid housing 211 and the fourth rigid housing 212 in the vertical direction. The longer the joint in this direction, the more difficult it will be to separate the third rigid housing 211 and the fourth rigid housing 212 after gluing, making the bonding of the two housings more firm and reliable; and the two side surfaces of the third rigid housing 211 are complete planes, and when arranging the antenna or the touch circuit, there is no need to arrange across the housing, leaving a large space for the arrangement of the antenna and the touch circuit, which is convenient for assembly; since the second flexible body 213 only covers the fourth rigid housing 212, therefore, the U-shaped structure setting method makes the second flexible body 213 not extend to the touched area on the side surface of the third rigid housing 211, and there is no need to cause more serious wear to the rubber layer due to reasons such as touching, and it is not easy to come off.

[0138] In some embodiments, please refer to Figure 17 , at least one side wall of the U-shaped structure is an installation base, and an antenna and / or a touch circuit board are installed on the installation base. Setting at least one side wall as the installation base can ensure that when arranging the antenna or the touch circuit, there is no need to arrange across the housing, leaving a large space for the arrangement of the antenna and the touch circuit, which is convenient for assembly; since the second flexible body 213 only covers the fourth rigid housing, therefore, the U-shaped structure setting method makes the second flexible body 213 not extend to the touched area on the side surface of the third rigid housing 211, and there is no need to cause more serious wear to the second flexible body 213 due to reasons such as touching, and it is not easy to come off.

[0139] In some embodiments, both the third rigid housing 211 and the fourth rigid housing 212 are provided with a circular side wall and a semi-cylindrical side surface (which can also be referred to as a connecting wall), similar to an L-shaped structure. The bottoms of the two housings face each other, and the semi-cylindrical side surfaces complement each other to form a complete cylindrical cavity. That is to say, the connecting walls of the third rigid housing 211 and the fourth rigid housing 212 are spliced to form the annular peripheral wall of the abutting portion 2. This setting method not only retains the complete side wall to provide a position for installing the antenna and / or the touch circuit board, but also makes the assembly method simpler and more direct, increasing the assembly efficiency. Among them, the side wall of the third rigid housing 211 can be used as a mounting base for installing the antenna and / or the touch circuit board, and the side wall of the fourth rigid housing 212 can also be used as a mounting base for installing the antenna and / or the touch circuit board. One of the side walls can be used as the mounting base, or both side walls can be used as the mounting base at the same time.

[0140] In some embodiments, please refer to Figure 18 , both the third rigid housing 211 and the fourth rigid housing 212 have a buckle-shaped structure. At least one side wall of the third rigid housing 211 and at least one side wall of the fourth rigid housing 212 are spliced to form a mounting base, and the second flexible body 213 covers at least a part of the mounting base.

[0141] In some embodiments, please refer to Figure 18 , the third rigid housing 211 and the fourth rigid housing 212 can also be integrally formed. The second flexible body 213 covers the fourth rigid housing 212, and the second flexible body 213 has a side wall 2131, and the side wall 2131 can at least partially cover the side wall 2121 of the fourth rigid housing 212.

[0142] In some embodiments, the second flexible body 213 covers the fourth rigid housing 212 and the earhook 3, and the second flexible body 213 and the fourth rigid housing 212 and the earhook 3 are integrally injection-molded. This production method enables the second flexible body 213 to cover the joint surface of the fourth rigid housing 212 and the earhook 3, which can prevent the joint surface of the fourth rigid housing 212 and the earhook 3 from leaking out, increasing the reliability and beauty of the earphone.

[0143] In some embodiments, please refer to Figure 1 and 15 , in the natural state, the sound generating part 1 and the abutting part 2 are in mutual abutment, and the first flexible body 113 and the second flexible body 213 are in contact. The two are in contact with each other to maintain a pre-tightening force. At the same time, when taken off from the wearing state, the mutual contact of the two flexible bodies will buffer the impact between the sound generating part 1 and the abutting part 2.

[0144] In some embodiments, please refer to Figure 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, at least a part of the first flexible body 113 is in contact with the concave surface 2130. The concave surface is designed to adapt to the soft tissue shapes of the back of the human ear and the head opposite to the back of the ear, increase the contact area, reduce the pressure, and improve the wearing comfort. At the same time, the contact between the sound generating part 1 and the concave surface can also reduce the impact force during the sudden change from the wearing state to the natural state.

[0145] In some embodiments, in a cross-section perpendicular to the length direction of the second housing 21, the depth L0 of the concave surface 2130 is between 0.07 and 0.25. For example, it can be 0.07, 0.1, 0.15, 0.20, or 0.25. By setting the depth of the concave surface 2130 in this way, it can adapt to the soft tissue shapes of the back of the human ear and the head opposite to the back of the ear, increase the contact area, reduce the pressure, and improve the wearing comfort.

[0146] In some embodiments, the second housing 21 has an elongated structure. In a cross-section perpendicular to the length direction of the second housing 21 and passing through the midpoint of the length direction, the outer wall of the concave surface is recessed into the interior of the second housing 21.

[0147] In other embodiments, the second housing 21 has an elongated structure. In a cross-section perpendicular to the length direction of the second housing 21 and passing through the midpoint of the length direction, the second flexible body 213 has a shape that is thinner in the middle and thicker at both ends. This setting makes the curvature of the second flexible body 213 in the direction closer to the human ear more conform to the design of the human ear, increases the area of contact between the second housing 21 and the ear, and reduces the pressure exerted by the earphone on the ear.

[0148] In some embodiments, please refer to Figure 15 , the second housing 21 has an elongated structure. In a cross-section perpendicular to the length direction of the second housing 21, the included angle δ1 formed by the connection lines between the two ends of the second flexible body 213 (i.e., the two end points of the outer contour line of the second flexible body 213) and the centroid of the second accommodation cavity 210 is greater than or equal to 160°. For example, the included 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 come into contact with the skin of the wearer during the wearing state, resulting in insufficient comfort.

[0149] In some embodiments, the second housing 21 has an elongated structure. In a cross-section perpendicular to the length direction of the second housing 21, the included angle δ1 formed between the centroid of the second accommodating cavity 210 and the line connecting the two end points of the outer contour line of the second flexible body 213 is greater than or equal to 160°, or forms an included angle δ1 greater than or equal to 145° and less than 160°. For example, the included 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 rigid housing may come into contact with the wearer's skin during the wearing state, resulting in insufficient comfort.

[0150] In some embodiments, the second housing 21 has an elongated structure. In a cross-section perpendicular to the length direction of the second housing 21, the arc length of the second flexible body 213 (herein refers to the arc length of the outer contour line 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 line of the second flexible body 213 is too small, the rigid housing may come into contact with the wearer's skin during the wearing state, resulting in insufficient comfort.

[0151] In some embodiments, the second housing 21 has an elongated structure. In a cross-section perpendicular to the length direction of the second housing 21, the arc length of the outer contour line 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 line of the second flexible body 213 is too small, the rigid housing may come into contact with the wearer's skin during the wearing state, resulting in insufficient comfort.

[0152] In some embodiments, please refer to Figure 2 , the ear hook 3 has a support rib 31 and a third flexible body 32. The third flexible body 32 wraps around the support rib 31. The second flexible body 213 and the third flexible body 32 are an integrally formed integral structure. Such a setting can eliminate the parting line between the ear hook 3 and the abutting portion 2, making the transition smoother and increasing the stability of the product connection.

[0153] In some embodiments, the second flexible body 213 and the third flexible body 32 are separately arranged and do not contact each other. In this way, the preparation of the third flexible body 32 and the second flexible body 213 can be separated, reducing the complexity of the process. In other embodiments, the support rib 31 of the ear hook 3 can also be omitted.

[0154] In some embodiments, please refer to Figure 15, the second housing 21 has an elongated structure. In a cross-section perpendicular to the length direction 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 accommodation cavity 210 and the distance from the third point to the centroid of the second accommodation cavity 210 are both greater than the distance from the second point to the centroid of the second accommodation cavity 210. With such a setting, it can adapt to the soft tissue shapes of the back of the ear and the head opposite to the back of the ear of the human body, increase the contact area, reduce the pressure, and improve the wearing comfort.

[0155] In some embodiments, please refer to Figure 15 , the second housing 21 has an elongated structure. In a cross-section perpendicular to the length direction of the second housing 21, the second point is located at the midpoint of the outer wall of the second flexible body 213. With such a setting, it can adapt to the soft tissue shapes of the back of the ear and the head opposite to the back of the ear of the human body, increase the contact area, reduce the pressure, and improve the wearing comfort.

[0156] In some embodiments, please refer to Figure 15 , the second housing 21 has an elongated structure. In a cross-section perpendicular to the length direction of the second housing 21, the included angle formed by the connection line from the first point to the centroid of the second accommodation cavity 210 and the connection line from the second point to the centroid of the second accommodation cavity 210 is equal to the included angle formed by the connection line from the second point to the centroid of the second accommodation cavity 210 and the connection line from the third point to the centroid of the second accommodation cavity 210. With such a setting, it can adapt to the soft tissue shapes of the back of the ear and the head opposite to the back of the ear of the human body, increase the contact area, reduce the pressure, and improve the wearing comfort.

[0157] In some embodiments, please refer to Figure 15 , the distance from the first point to the centroid of the second accommodation cavity 210 is equal to the distance from the third point to the centroid of the second accommodation cavity 210. With such a setting, it can adapt to the soft tissue shapes of the back of the ear and the head opposite to the back of the ear of the human body, increase the contact area, reduce the pressure, and improve the wearing comfort.

[0158] 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. With such a setting, it can adapt to the soft tissue shapes of the back of the ear and the head opposite to the back of the ear of the human body, increase the contact area, reduce the pressure, and improve the wearing comfort.

[0159] 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. With such a setting, it is possible to adapt to the soft tissue shapes of the back of the ear and the head opposite the back of the ear of the human body, increase the contact area, reduce the pressure, and improve the wearing comfort.

[0160] In some embodiments, please refer to Figure 15 , the thickness D14 of the second flexible body 213 at the first point is between 1.4 mm and 1.7 mm, and / or the thickness D15 of the second flexible body 213 at the second point is between 1.0 mm and 1.3 mm, and / or the thickness D16 of the second flexible body 213 at the third point is between 1.4 mm and 1.7 mm. This thickness direction is the thickness perpendicular to the normal direction of the outer wall. The purpose of such a setting is to adapt to the soft tissue shapes of the back of the ear and the head opposite the back of the ear of the human body, increase the contact area, reduce the pressure, and improve the wearing comfort.

[0161] In some embodiments, please refer to Figure 15 , the thickness D14 of the second flexible body 213 at the 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 the 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 the 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 the thickness perpendicular to the normal direction of the outer wall. The purpose of such a setting is to adapt to the soft tissue shapes of the back of the ear and the head opposite the back of the ear of the human body, increase the contact area, reduce the pressure, and improve the wearing comfort.

[0162] In some embodiments, please refer to Figure 15 , the included angle δ2 formed by the connection line between the first point and the centroid of the second accommodating cavity 210 and the connection line between the third point and the centroid of the second accommodating cavity 210 is 165° - 175°, for example, the included angle δ2 can be 165°, 168°, 172°, or 175°. With such a setting, it is possible to adapt to the soft tissue shapes of the back of the ear and the head opposite the back of the ear of the human body, increase the contact area, reduce the pressure, and improve the wearing comfort.

[0163] In some embodiments, the angle δ2 formed by the line connecting the first point to the centroid of the second receiving cavity 210 and the line connecting the third point to the centroid of the second receiving cavity 210 is 165° - 175°, or forms an angle δ2 greater than or equal to 90° and less than 165°. For example, the angle δ2 can be 90°, 100°, 110°, 120°, 130°, 140°, 150°, 165°, 168°, 172°, or 175°. With such a setting, it is possible to adapt to the soft tissue shapes of the back of the ear and the back of the head opposite the ear, increase the contact area, reduce the pressure, and improve the wearing comfort.

[0164] In some embodiments, the second receiving cavity 210 is a battery cavity, and the abutting portion 2 includes a battery, and the battery is received in the battery cavity.

[0165] In some embodiments, the earhook 3 has an earhook symmetry plane A2 along its length direction, and the earhook symmetry plane A2 intersects the outermost loop of the end face of the second flexible body 213 to form two intersection points; there is a third reference point O3 on the outer wall of the abutting portion 2, and the distance between the third reference point O3 and the outer wall of the sound generating portion 1 is the shortest, and the angle δ3 formed by the connection lines between the third reference point O3 and the two intersection points is between 80° - 130°. For example, the angle δ3 can be 80°, 90°, 100°, 110°, 120°, or 130°.

[0166] In some embodiments, when the earphone 100 is in a natural state (i.e., not intervened by external forces), on the earhook symmetry plane A2, the sound generating portion 1 and the abutting portion 2 are arranged at intervals. At this time, the third reference point O3 can refer to the end point of the shortest connection line between the sound generating 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 intervened by external forces), on the earhook symmetry plane A2, the sound generating portion 1 and the abutting portion 2 are in contact with each other. At this time, the third reference point O3 can refer to the midpoint of the arc segment formed by the contact area between the sound generating portion 1 and the abutting portion 2 on the earhook symmetry plane A2.

[0167] By setting the wrap angle of the second flexible body 213 in this way, it can be ensured that the contact areas between the human ear and the second housing 21 are covered by the second flexible body 213 for most people or in the case of a standard human head model, thereby ensuring comfort and taking into account leaving more space for the third rigid housing 211, so as to ensure that the inner cavity volume will not be overly occupied by the silicone area.

[0168] Please refer to Figure 23 - Figure 3 0. It should be noted that the angle markings such as α, β, and γ in the following content all correspond to Figure 23 - Figure 3 the angle markings of 0.

[0169] It should be noted that the materials of the first flexible body 113 and the second flexible body 213 are not limited to silicone, rubber, elastic resin, polyurethane material, polydimethylsiloxane, PVC, TPE and other materials, and any flexible material can be used.

[0170] In some embodiments, by changing the position of the sound outlet hole in the sound generating part, the output volume of the earphone at the user's ear canal opening can be adjusted. Generally, the larger the output volume of the earphone at the ear canal opening, the louder the sound that the user can experience under the same output power. In this way, the energy consumption of the earphone can be reduced and the sound leakage can be reduced.

[0171] In some embodiments, as Figure 23 shown, a sound outlet hole 114 is provided on the first housing 11, and the sound generated by the sound generating component 12 is output outward through the sound outlet hole 114. The ear hook 3 has an ear hook symmetry plane A2 arranged along its length direction. The included angle α formed between the central axis of the sound outlet hole 114 and the ear hook symmetry plane A2 is between 15° and 45°, and is located on the lower side of the ear hook symmetry plane A2 in the wearing state. By setting the included angle α formed between the central axis of the sound outlet hole 114 and the ear hook symmetry plane A2 to be between 15° and 45°, the directivity of the sound outlet hole 114 to the ear hole in the wearing state is better, which is beneficial to improving the sound listening effect.

[0172] In some embodiments, the sound outlet hole 114 can be strip-shaped. Please refer to Figure 23 、 Figure 24 The sound outlet hole is arranged perpendicular to the ear hook symmetry plane (that is, the long axis of the sound outlet hole is perpendicular or nearly perpendicular to the ear hook symmetry plane. That is to say, an error within 15° is allowed, and it can also be called the longitudinal setting of the sound outlet hole). In this case, the sound outlet hole 114 can be arranged on the part of the first rigid housing 111 that is not covered by the first flexible body 113 to avoid the sound outlet hole 114 straddling the first rigid housing 111 and the second rigid housing 112 at the same time. Define the included angle between the normal line (the normal line is the central axis of the sound outlet hole 114) from the sound generating part of the earphone sound outlet hole to the outside and the ear hook symmetry plane A2 as α, and the included angle between the ear hook symmetry plane A2 and the human horizontal plane as β. As Figure 26 shown, fix α = 0° (that is, the ear hook symmetry plane passes through the central axis of the sound outlet hole), and adjust the β angle to -20°, 0°, 45° respectively. The frequency response curves of the earphone output sound at the ear canal opening are measured, where the abscissa represents the output frequency band (Hz) of the earphone, and the ordinate is the measured sound pressure level SPL (dB).

[0173] Furthermore, please refer to Figure 27, fix β = 0° (i.e., the wearing state where the symmetry plane of the earhook is parallel to the human horizontal plane), adjust the α angle to -30°, -15°, 0°, 15°, 30°, 45°, 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.

[0174] In addition, when the earclip-type headphone is worn, affected by gravity, β is usually between 0° and 30°. Therefore, when the sound outlet hole is set such that β = 0° (i.e., the wearing state where the symmetry plane of the earhook is parallel to the human horizontal plane), the included angle α between the normal line of the sound outlet hole (the normal line refers to the central axis of the sound outlet hole 114) and the symmetry plane A2 of the earhook is 15° - 45°, which can increase the listening volume in the wearing scenario where β is between 0° and 30°. (Equivalent to adjusting the line of α = 0°, β = 45° in xx - 2 to be close to the volume of α = 0°, β = 0°).

[0175] In some embodiments, such as Figure 22 shown, the sound outlet hole 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 hole 114. In the wearing state, the first end 1141 faces the ear hole, and the distance L1 between the outer wall of the first housing 11 at the second end 1142 and the inner wall surface of the concha is less than the distance L1 between the outer wall of the first housing 11 at the first end 1141 and the inner wall surface of the concha.

[0176] Furthermore, please refer to Figure 28 , the sound outlet hole 114 can be arranged horizontally (i.e., the long axis of the sound outlet hole is parallel or nearly parallel to the symmetry plane of the earhook, that is, an error within 15° is allowed). In this case, as Figure 22 shown, the sound outlet hole 114 can be arranged on the second rigid housing 112 and the first flexible body 113 to prevent the sound outlet hole 114 from straddling the first rigid housing 111 and the second rigid housing 112 at the same time. Rotate the longitudinally arranged sound outlet hole described above 90° along its central symmetry axis, and rotate the normal line from the sound outlet hole pointing to the outside to the midpoint of the short side closer to the ear canal opening of the sound outlet hole. The angle swept during this rotation process is defined as γ. As shown in Figure 29, set the gradients of γ to 0°, 15°, 30°, 37.5°, 45°, 60° respectively, and measure the frequency response curves of the output sound at the ear canal respectively. It can be seen from the figure that as the γ angle of the sound outlet hole increases (i.e., the sound outlet hole rotates inward towards 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 other sections, and the change in the sound pressure level is not obvious in this value range (the sound pressure level curves of 30°, 37.5°, 45° are close), that is, the value of γ can be 30° - 45°.

[0177] Figure 29 - A 、 Figure 29 - B The change trend of the sound pressure level SPL output by the earphone can be explained by the "horn effect". As Figure 30 - A and 30-B shown, the depth of the gray area in the figure represents the magnitude of the sound pressure level. When a point sound source in space radiates sound to the surrounding, if there is a reflecting wall surface near the sound propagation direction, compared with the free field, some positions near the sound source in the reflection field will form a sound enhancement area due to the interference and diffraction between the reflected sound wave and the sound wave of the sound source.

[0178] Define the straight-line distance from the center position of the sound-generating part to the reflecting wall surface as h-gap, and the angle between the normal straight line from the sound outlet hole pointing to the outside and the straight line from the center position of the sound-generating part to the reflecting wall surface as θ. Figure 31A- Figure 31 - C is the simulation result when the sound source signal is 2000 Hz with h-gap values of 5 mm, 10 mm, 15 mm, 20 mm and θ values of 0°, 60°, 120°, 180°, 240°, 300°. Taking the equal sound pressure level contour map as the result, the result shows that the closer the sound source is to the reflecting surface, the louder the sound near the reflecting wall surface; when the normal straight line from the sound outlet hole pointing to the outside is obliquely pointing to the reflecting wall (60°, 300°), the maximum sound pressure level can be generated on one side (the area of the high sound pressure level area is the largest), and the high sound pressure level area on this side can be regarded as the listening position.

[0179] In the present application, the sound-generating part can be considered as a point sound source wrapped by a housing, and there is a sound outlet hole on the housing. The concha opposite to the sound outlet hole can be considered as a reflecting wall surface. Therefore, when the sound outlet hole abuts against the concha as much as possible and the sound outlet position is on one side, the maximum output sound pressure level can be obtained at the ear hole listening position.

[0180] Figure 32 is the sound leakage curve at different sound outlet hole positions. In the test environment, sound leakage refers to the sound from the ear canal extending along the direction perpendicular to the sagittal plane of the human body to a point 30 mm away from the ear canal, and this volume can be measured using a microphone. Under the condition of scheme optimization, the lateral sound outlet hole scheme (γ = 37.5°) has about 2 dB less sound leakage than the original longitudinal sound outlet hole.

[0181] The above uses specific examples to elaborate on the present application, which is only used to help understand the present application and does not limit the present application. For those skilled in the technical field to which the present application belongs, according to the idea of the present application, several simple deductions, deformations or substitutions can also be made.

Claims

1. An ear clip type earphone, characterized in that: The ear clip-on earphone comprises a sound-generating part for inserting into the concha cavity of the wearer, an abutting part for abutting the back of the ear of the wearer, 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-on earphone is clamped and worn on the wearer's ear helix, and the sound-generating part comprises: a first shell, the first shell comprising a first hard shell connected to the ear hook, a second hard shell arranged toward the wearer's cavum concha when worn, and a first flexible body in contact with the wearer's cavum concha, the first hard shell and the second hard shell enclosing a first accommodating cavity; the first flexible body covering an outer wall of the second hard shell; and A sound-emitting component, wherein the sound-emitting component is arranged in the first accommodating cavity, and the first shell has a sound outlet hole, and the sound waves emitted by the sound-emitting component can be transmitted to the wearer through the sound outlet hole; wherein the outer wall of the first hard shell is not covered with the first flexible body and is in a naked state, 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 in a naked state.

2. The ear-clip earphone according to claim 1, characterized in that: On a first preset cross section, the coverage area of ​​the first flexible body on the second hard shell is greater than or equal to 80% of the curved length segment of the second hard shell; Wherein, the first preset cross section is perpendicular to the first reference plane and passes through the center of the outermost loop line of the end surface of the first flexible body, or the first preset cross section is an ear hook symmetry plane arranged along the length direction of the ear hook; The first reference plane is the plane where the outermost loop line of the end surface of the first flexible body is located, or the ear hook symmetry plane intersects with the outermost loop line of the end surface of the first flexible body to form two intersection points, and the first reference plane is a plane perpendicular to the ear hook symmetry plane and passing through the two intersection points.

3. The ear-clip earphone according to claim 1, characterized in that: The sound outlet is arranged at a portion of the first hard shell that is not covered by the first flexible body.

4. The ear-clip earphone according to claim 3, characterized in that: The sound-emitting portion has a first reference plane, which is a plane where the outermost loop of the end surface of the first flexible body is located, or the ear hook has an ear hook symmetry plane arranged along its length direction, the ear hook symmetry plane intersects with the outermost loop of the end surface of the first flexible body to form two intersection points, and the first reference plane is a plane perpendicular to the ear hook symmetry plane and passing through the two intersection points; The sound-generating component comprises a diaphragm, and a mounting plane of an outer edge of the diaphragm forms an angle of 3°-9° with the first reference plane.

5. The ear-clip earphone according to claim 3 or 4, characterized in that: The sound-emitting portion has a first reference plane, which is a plane where the outermost loop of the end surface of the first flexible body is located, or the ear hook has an ear hook symmetry plane arranged along its length direction, the ear hook symmetry plane intersects with the outermost loop of the end surface of the first flexible body to form two intersection points, and the first reference plane is a plane perpendicular to the ear hook symmetry plane and passing through the two intersection points; The central axis of the sound outlet hole forms an angle of 3°-9° with the first reference plane.

6. The ear clip type earphone according to claim 3 or 4, characterized in that: The sound-emitting portion has a first reference plane, which is a plane where the outermost loop of the end surface of the first flexible body is located, or the ear hook has an ear hook symmetry plane arranged along its length direction, the ear hook symmetry plane intersects with the outermost loop of the end surface of the first flexible body to form two intersection points, and the first reference plane is a plane perpendicular to the ear hook symmetry plane and passing through the two intersection points; The distance between the end of the sound outlet hole close to the second hard shell and the first reference surface is 1mm-3mm.

7. The ear-clip headphone according to claim 1, wherein: The ear hook has an ear hook symmetry plane arranged along its length direction, the sound-generating component has a diaphragm, and the angle between the mounting plane of the outer edge of the diaphragm and the ear hook symmetry plane is less than 10°.

8. The ear-clip earphone according to claim 7, characterized in that: The sound outlet is arranged on the second hard shell and the first flexible body.

9. The ear clip type earphone according to claim 7, characterized in that: The sound outlet hole is in the shape of an elongated strip, and the length direction is parallel or nearly parallel to the symmetric plane of the ear hook; The sound-emitting portion has a first reference plane, which is a plane where the outermost loop line of the end surface of the first flexible body is located, or the ear hook symmetry plane intersects with the outermost loop line of the end surface of the first flexible body to form two intersection points, and the first reference plane is a plane perpendicular to the ear hook symmetry plane and passing through the two intersection points; The central axis of the sound outlet hole forms an angle of 40°-80° with the first reference plane.

10. The ear-clip headphone according to claim 7, characterized in that: The sound outlet hole is in the shape of an elongated strip, and the length direction is parallel or nearly parallel to the symmetric plane of the ear hook; The sound-emitting portion has a first reference plane, which is a plane where the outermost loop line of the end surface of the first flexible body is located, or the ear hook symmetry plane intersects with the outermost loop line of the end surface of the first flexible body to form two intersection points, and the first reference plane is a plane perpendicular to the ear hook symmetry plane and passing through the two intersection points; The distance between the end of the sound outlet hole close to the first hard shell and the first reference surface is 1 mm-4 mm.

11. The ear-clip earphone according to claim 1 or 4, characterized in that: The widest radius of the sound-generating component is located inside the first hard shell.

12. The ear-clip headphone according to claim 11, wherein: In the radial direction of the sound-generating component, the first flexible body is not arranged in the area facing the widest radius of the sound-generating component, and / or the first hard shell has a groove, and the widest radial part of the sound-generating component is accommodated in the groove.

13. The ear clip type earphone according to claim 1, characterized in that: The sound-generating component is mounted on the second hard shell, and one end of the sound-generating component facing the first hard shell protrudes out of the second hard shell.

14. The ear-clip earphone according to claim 1 or 4, characterized in that: The sound-generating assembly includes at least one speaker, and the magnetic shield of at least one speaker is located in the second hard shell and is arranged toward the second hard shell; on the second preset cross section, the curvature radius of the area on the second hard shell opposite to the end surface of the magnetic shield is greater than the curvature radius of at least a portion of other areas located on both sides thereof; Wherein, the second preset cross section is perpendicular to the first reference plane and passes through the center of the end surface of the magnetic conductive cover toward the second hard shell, or the second preset cross section is an ear hook symmetry plane of the ear hook arranged along the length direction of the ear hook; The first reference plane is the plane where the outermost loop line of the end surface of the first flexible body is located, or the ear hook symmetry plane intersects with the outermost loop line of the end surface of the first flexible body to form two intersection points, and the first reference plane is a plane perpendicular to the ear hook symmetry plane and passing through the two intersection points.

15. The ear-clip headphone according to claim 14, wherein: On the second preset cross section, the radius of curvature of the area on the first flexible body opposite to the magnetic conductive cover is 6mm-18mm, and / or the thickness of the area on the first flexible body opposite to the magnetic conductive cover is 0.8mm-2mm.

16. The ear clip type earphone according to claim 1 or 7, characterized in that: On a first preset cross section, a curvature radius of a predetermined area on an outer contour line of the first flexible body is greater than a curvature radius of at least a portion of other areas located on both sides thereof, and the predetermined area is close to a contact center between the first flexible body and the cavum conchae; Wherein, the first preset cross section is perpendicular to the first reference plane and passes through the center of the outermost loop line of the end surface of the first flexible body, or the first preset cross section is an ear hook symmetry plane arranged along the length direction of the ear hook; The first reference plane is the plane where the outermost loop line of the end surface of the first flexible body is located, or the ear hook symmetry plane intersects with the outermost loop line of the end surface of the first flexible body to form two intersection points, and the first reference plane is a plane perpendicular to the ear hook symmetry plane and passing through the two intersection points.

17. The ear clip type earphone according to claim 16, characterized in that: The radius of curvature of the predetermined area is 6 mm-18 mm, and / or the thickness of the first flexible body in the predetermined area is 0.2 mm-1 mm.

18. The ear clip type earphone according to claim 1, characterized in that: The sound-generating component comprises a mounting bracket and two speakers, the two speakers are mounted on the 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.

19. The ear clip type earphone according to claim 18, 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.

20. The ear-clip headphone according to claim 19, wherein: The first hard shell or the second hard shell has a groove, and the groove is used to accommodate the protruding structure.

21. The ear-clip headphone according to claim 18, wherein: On the third preset cross section, a line connecting the center of the mounting bracket and two end points of the outer contour line of the first flexible body forms an angle of 130°-160°, or an angle greater than 160° and less than or equal to 170°; Wherein, the third preset cross section is perpendicular to the first reference plane and passes through the center of the mounting bracket; The first reference plane is the plane where the outermost loop line of the end surface of the first flexible body is located, or the ear hook symmetry plane intersects with the outermost loop line of the end surface of the first flexible body to form two intersection points, and the first reference plane is a plane perpendicular to the ear hook symmetry plane and passing through the two intersection points.

22. The ear-clip earphone according to claim 1 or 4, characterized in that: The sound-emitting component includes a mounting bracket and two speakers, and the two speakers are mounted together on the mounting bracket; wherein, a line connecting the centers of the magnetic covers of the two speakers passes through the first hard shell, or a line connecting the centers of the magnetic covers of the two speakers does not pass through the second hard shell and the first flexible body.

23. The ear-clip headphone according to claim 1, characterized in that: The widest side of the sound-generating component in the diameter direction is arranged opposite to the first hard shell, and the widest side of the sound-generating component in the axial direction is arranged opposite to the first hard shell.

24. The ear clip type earphone according to claim 1, characterized in that: The sound-emitting portion has a first reference plane, which is a plane where the outermost loop of the end surface of the first flexible body is located, or the ear hook has an ear hook symmetry plane arranged along its length direction, the ear hook symmetry plane intersects with the outermost loop of the end surface of the first flexible body to form two intersection points, and the first reference plane is a plane perpendicular to the ear hook symmetry plane and passing through the two intersection points; The sound-emitting component includes a mounting bracket and at least one speaker, the speaker is mounted on the mounting bracket, and the distance between the center of a side surface of the mounting bracket facing away from the magnetic cover of the speaker and the first reference plane is 0.4mm-2mm, or greater than 2mm and less than or equal to 3mm.

25. The ear-clip headphone according to claim 1, characterized in that: The ear hook has an ear hook symmetry plane arranged along the length direction thereof, and the ear hook symmetry plane intersects with the outermost loop line of the end surface of the first flexible body to form two intersection points; On the ear hook symmetry plane, the ear hook has an inner contour line, the inner contour line has a first reference point in an area close to the wearer's helix, the inner contour line has a local maximum curvature at the first reference point, and an angle formed by the first reference point and a line between the two intersection points is less than or equal to 15°.

26. The ear-clip headphone according to claim 1, wherein: The ear hook has an ear hook symmetry plane arranged along the length direction thereof, and the ear hook symmetry plane intersects with the outermost loop line of the end surface of the first flexible body to form two intersection points; On the ear hook symmetry plane, there is a second reference point on the outer wall of the sound-emitting part, the distance between the second reference point and the outer wall of the abutment part is the shortest, and the angle formed by the second reference point and the line between the two intersection points is between 85° and 115°.

27. The ear-clip headphone according to claim 1, wherein: On the first preset cross section, the length of the outer contour line of the first flexible body is 16 mm-25 mm; Wherein, the first preset cross section is perpendicular to the first reference plane and passes through the center of the outermost loop line of the end surface of the first flexible body, or the first preset cross section is an ear hook symmetry plane arranged along the length direction of the ear hook; The first reference plane is the plane where the outermost loop line of the end surface of the first flexible body is located, or the ear hook symmetry plane intersects with the outermost loop line of the end surface of the first flexible body to form two intersection points, and the first reference plane is a plane perpendicular to the ear hook symmetry plane and passing through the two intersection points.

28. The ear clip type earphone according to claim 27, characterized in that: On the first preset cross-section, the end of the first flexible body closer to the ear hook is the first end, and the end farther away from the ear hook is the second end, and in an area where the first flexible body is one-third of the distance from the end surface of the second end, the thickness of the first flexible body along the normal direction of the outer wall is 0.8mm-2.0mm; or, in an area where the first flexible body is one-third of the distance from the end surface of the first end, the thickness of the first flexible body along the normal direction of the outer wall is 0.8mm-2.0mm.

29. The ear-clip headphone according to claim 27, wherein: On the first preset cross section, a three-point arc is fitted according to the midpoint and two endpoints of the outer contour line of the first flexible body, the center of the three-point arc is used as the center of the acoustic cavity, and the angle formed by the line between the center of the acoustic cavity and the two endpoints is between 145° and 170°, or greater than 170° and less than or equal to 178°; and / or An angle formed by a midpoint of the outer contour line of the first flexible body and a line connecting two end points of the outer contour line of the first flexible body is between 90° and 100°.

30. The ear clip type earphone according to claim 27, characterized in that: On the first preset cross-section, the end of the outer contour line of the first flexible body that is closer to the ear hook is the first end, and the end that is farther away from the ear hook is the second end. The line connecting the first end to the contact center of the outer wall of the first flexible body and the line connecting the first end to the center of the upper and lower positions of the sound outlet form an angle of 10°-85°.

31. The ear clip type earphone according to claim 1, characterized in that: The sound-emitting portion has a first reference plane, which is a plane where the outermost loop of the end surface of the first flexible body is located, or the ear hook has an ear hook symmetry plane arranged along its length direction, the ear hook symmetry plane intersects with the outermost loop of the end surface of the first flexible body to form two intersection points, and the first reference plane is a plane perpendicular to the ear hook symmetry plane and passing through the two intersection points; On the first reference plane, a ratio of two widths of the first shell in an orthogonal direction is between 0.8 and 1.

2.

32. The ear clip type earphone according to claim 1, characterized in that: The thickness of the contact area of ​​the first flexible body that contacts the concha cavity in the wearing state is greater than the thickness of other areas.

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