Ear clip type earphone

Abstract

The embodiment of the invention provides an ear clip type earphone, the earphone comprises a sound production part used for being inserted into a conchae of a wearer, an abutting part used for abutting against the back of the ear of the wearer, and an ear hook connecting the sound production part and the abutting part, and the abutting part and the sound production part form a clamping state, so that the ear clip type earphone is clamped and worn on the helix of the wearer. The abutting part comprises a first hard shell; the second hard shell is arranged towards the back of the ear of the wearer during wearing, and a containing cavity is defined by the second hard shell and the first hard shell; the first flexible body covers the outer wall of the second hard shell and is used for being in contact with the back of the ear of a wearer, the outer wall of the first hard shell does not cover the first flexible body and is in an exposed state, or the first flexible body extends to the outer side of the first hard shell from the outer side of the second hard shell and covers a part of the outer wall of the first hard shell, and the first flexible body is used for being in contact with the back of the ear of the wearer. And the other outer walls of the first hard shell are in an exposed state.

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. They 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 ears 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 still has deficiencies in terms of comfort, while 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] In an embodiment of this application, an ear - clip type earphone is provided. The earphone includes a sound - generating part for inserting into the wearer's concha, an abutting part for abutting against the back of the wearer's ear, and an earhook connecting the sound - generating part and the abutting part. The abutting part and the sound - generating part form a clamping state to clamp and wear the ear - clip type earphone on the wearer's helix. The abutting part includes: a first rigid housing; a second rigid housing, which is arranged towards the back of the wearer's ear during wearing, and the second rigid housing and the first rigid housing enclose a receiving cavity; a first flexible body, covering the outer wall of the second rigid housing and used for contacting the back of the wearer's ear. Wherein, the outer wall of the first rigid housing is not covered by 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 ear clip-type earphone according to the above embodiment includes a sound generating part, a abutting part, and an ear hook connecting the sound generating part and the abutting part. The abutting part 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 accommodation 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 will face the back of the wearer's ear. 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 wearer's skin and improve the comfort of wearing the earphone. At the same time, in the abutting part, the first flexible body mainly covers the second rigid housing, and basically does not affect the external structure and internal space of the first rigid housing, ensuring the utilization rate of the internal space of the first rigid housing. Description of the Drawings

[0008] Figure 1 It is a schematic diagram of the external structure of the ear clip-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 ear hook in an embodiment of the present application;

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

[0011] Figures 4 - 7 It is a schematic diagram of the docking part 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 docking 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 generating part in several different embodiments of the present application;

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

[0014] Figure 14 It is a cross-sectional view of the sound generating 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 ear hook 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 17 It is an exploded 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 diagram of the three-dimensional structure 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 position of the sound outlet hole and the 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 at the ear canal opening corresponding to different β angles when α is 0 in the present application;

[0027] Figure 27 Frequency response curve 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 horizontally arranged in the present application;

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

[0030] Figure 29 - B For the present application Figure 29 - A Partial 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 diagram 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 the 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, which is 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 descriptions in the specification and the 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 the drawings are only for clearly describing a certain embodiment and do not mean a necessary sequence, 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 second 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 second housing 11 includes a third rigid housing 111 connected to the earhook 3, a fourth rigid housing 112 arranged towards the concha of the wearer during wearing, and a third 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 second housing 11, such as the sound-emitting component 12. The third rigid housing 111 and the fourth rigid housing 112 enclose to form a second accommodation cavity 110, and the sound-emitting component 12 is arranged in the second accommodation cavity 110. The second housing 11 has a sound outlet hole 114, and the sound waves emitted by the sound-emitting component 12 can be transmitted to the wearer through the sound outlet hole 114. The third flexible body 113 covers the outer wall of the fourth rigid housing 112, and the third flexible body 113 can be made of silicone or other skin-friendly flexible materials to improve the comfort when the sound-emitting part 1 contacts the wearer.

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

[0044] Meanwhile, in the second housing 11, the third flexible body 113 mainly covers the fourth rigid housing 112, and basically does not affect the external structure and internal space of the third rigid housing 111, ensuring the utilization rate of the internal space of the third rigid housing 111. Specifically, the third flexible body 113 is coated on the outer wall of the fourth rigid housing 112, so the fourth rigid housing 112 has a double-layer wall thickness in part. The outer wall of the third rigid housing 111 is not coated with the third flexible body 113 and is in an exposed state, or the third flexible body 113 extends from the outside of the fourth rigid housing 112 to the outside of the third rigid housing 111. Only a part of the third rigid housing 111 close to the fourth rigid housing 112 is coated with the third flexible body 113, and the rest is in an exposed state. Therefore, the third rigid housing 111 only needs a single-layer wall thickness, so that the third rigid housing 111 occupies a small volume of the second accommodation 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 of the end face of the third 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 of the end face of the third flexible body 113), the coverage area of the third flexible body 113 on the fourth rigid housing 112 is greater than or equal to 80% of the curved length segment of the fourth rigid housing 112 (here, it refers to the outer contour line of the fourth rigid housing 112), for example, it can be 80%, 85%, 90%, 95%, or 100%, to ensure that the third flexible body 113 can cover a large enough area on the fourth rigid housing 112 to reduce or eliminate the possibility of direct contact between the wearer and the fourth 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 of the end face of the third flexible body 113 has two intersection points with the (in the middle). A cross-section perpendicular to the earhook symmetry plane A2 and passing through the two intersection points can also be used as the first reference plane A1. On 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 third flexible body 113, the coverage area of the third flexible body 113 on the fourth rigid housing 112 is greater than or equal to 80% of the curved length segment of the fourth rigid housing 112 (here, it refers to the outer contour line of the fourth rigid housing 112), for example, it can be 80%, 85%, 90%, 95%, or 100%. This embodiment defines the proportion of the third flexible body 113 on the fourth rigid housing 112 from another perspective, enabling the third flexible body 113 to cover a sufficiently large area on the fourth rigid housing 112 to reduce or eliminate the possibility of direct contact between the wearer and the fourth rigid housing 112. Among them, the earhook symmetry plane A2 refers to the plane that is symmetric about the left and right in the length extension direction of the earhook 3. When the earhook 3 is an irregular asymmetric structure, the difference between the earhooks 3 on both sides of the earhook symmetry plane A2 should be the smallest among various division methods. For example, the earhook 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 third flexible body 113), the center of the cross-section of the abutting portion 2 perpendicular to its length direction (the length direction will be described later), and the center point in the length direction of the earhook 3.

[0047] In some embodiments, please refer to Figure 3 , on the first preset cross-section, the coverage area of the third flexible body 113 on the fourth rigid housing 112 is greater than or equal to 80% of the curved length segment of the fourth rigid housing 112 (here, it refers to the outer contour line of the fourth rigid housing 112), for example, it can be 80%, 85%, 90%, 95%, or 100%. In the description of this application, without special explanation, the "first preset cross-section" can 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 third flexible body 113, or it can refer to the earhook symmetry plane A2; the "first reference plane A1" can refer to the plane where the outermost loop of the end face of the third flexible body 113 is located. In addition, the earhook symmetry plane A2 (marked in Figure 14 ) intersects with the outermost loop of the end face of the third flexible body 113 to form two intersection points, and the "first reference plane A1" can also refer to a cross-section perpendicular to the earhook symmetry plane A2 and passing through these two intersection points. In this way, the third flexible body 113 can cover a sufficiently large area on the fourth rigid housing 112 to reduce or eliminate the possibility of direct contact between the wearer and the fourth rigid housing 112.

[0048] In some embodiments, please refer to Figures 4 - 7, the end of the fourth rigid housing 112 is spliced and fixed to the end of the third rigid housing 111. The end of the fourth rigid housing 112 and the end of the third rigid housing 111 are fixed by splicing to form a reliable and small-sized fixing, 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 third flexible body 113 (usually made of silica gel material) and the fourth rigid housing 112, it is necessary to injection-mold the third flexible body 113 on the basis of the fourth rigid housing 112. If the third flexible body 113 has a large length spanning the splicing position of the third rigid housing and the fourth rigid housing 112, then usually the injection molding can only be carried out after the speaker is installed in the second housing and the splicing is completed. At this time, the internal components of the second housing will be damaged by the high temperature during the injection molding process, which is not conducive to improving the yield rate of the product; therefore, most of the areas of the third flexible body 113 are arranged on the fourth rigid housing 112, and the silica gel can be injection-molded on the fourth 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 fourth rigid housing 112 that is not blocked by the third rigid housing 111 is covered by the third flexible body 113. Since usually the area of the second housing 11 in contact with the wearer is concentrated on the fourth rigid housing 112, this structure can ensure that there is no exposed area on the fourth rigid housing 112, and the wearer does not directly contact the fourth rigid housing 112, further improving the wearing comfort.

[0051] In some embodiments, please refer to Figure 5 and 6 , the third flexible body 113 extends from the outside of the fourth rigid housing 112 to the outside of the third rigid housing 111 and covers a part of the outer wall of the third rigid housing 111. The joint between the third rigid housing 111 and the fourth rigid housing 112 is usually a stress concentration area. A part of the outer wall of the third rigid housing 111 is covered by the third flexible body 113, so that the third flexible body 113 is fixed on both the third rigid housing 111 and the fourth rigid housing 112 at the same time, which further increases the firmness of the third rigid housing 111 and the fourth rigid housing 112 and also forms a certain protection for the stress concentration area. In addition, the third flexible body 113 can also wrap a part of the area of the third rigid housing 111 close to the fourth rigid housing 112 to prevent the wearer from directly contacting the fourth rigid housing 112 when touching this area, improving the comfort. Moreover, the third flexible body 113 can also cover the joint between the third rigid housing 111 and the fourth rigid housing 112 to improve the sealing and waterproof effect.

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

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

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

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

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

[0057] In the above embodiments, the end face 111a of the third rigid housing 111 and the end face 112a of the fourth 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 third rigid housing 111 and the fourth rigid housing 112 and ensure the sealing and waterproof effect. The end faces of the third rigid housing 111 and the fourth 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, and the firmness can be further improved. Furthermore, through the combination of multiple 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 fourth rigid housing 112, and one end of the sound generating component 12 facing the third rigid housing 111 protrudes from the fourth rigid housing 112. In this embodiment, by making full use of the parting structure of the third rigid housing 111 and the fourth rigid housing 112, the sound generating component 12 is first installed on the fourth rigid housing 112, and then the fourth rigid housing 112 together with the components thereon is fixed to the third 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 third rigid housing 111 (as shown in Figure 3 ), or can be provided on the fourth rigid housing 112 and the third flexible body 113 (as shown in Figure 8 ), or can also be formed by the splicing of the third rigid housing 111 and the fourth rigid housing 112 (as shown in Figure 9 ).

[0060] In some embodiments, the sound outlet hole 114 is provided on the part of the third rigid housing 111 that is not covered by the third flexible body 113. In this way, the sound outlet hole 114 does not need to penetrate both the third rigid housing 111 and the fourth rigid housing 112 at the same time, which can avoid the uneven surface of the sound outlet hole 114 and thus affect the installation of the sound tuning net and the steel net. Moreover, setting it on the third rigid housing 111 does not require opening a hole on the third flexible body 113, nor does it need to consider the influence of the third 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 third rigid housing 111, a positioning boss can be provided at the sound outlet hole 114 of the diaphragm mounting bracket without significantly increasing the external dimensions of the second housing 11, thereby improving the openness 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 prevent the sound outlet hole 114 from crossing two housings, while being 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 fourth rigid housing 112 to the first reference plane A1 is 1 mm - 3 mm. For example, it can be 1 mm, 1.5 mm, 2 mm, 2.5 mm, or 3 mm. Such a setting can prevent the sound outlet hole 114 from crossing two housings, while being relatively close to the ear hole, and leaving space for the glue path between the sound outlet mesh and the third rigid housing 111 and the mounting bracket 123 of the diaphragm of the speaker.

[0064] In some embodiments, please refer to Figure 3 , the third rigid housing 111 has a region facing the wearer's ear hole when worn, 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 a better listening effect and volume, and improving the headphone sound quality.

[0065] In some embodiments, please refer to Figure 3 , the sound generating component 12 has a diaphragm 124, and the mounting plane of the outer edge of the diaphragm 124 (as Figure 3 shown, the edge of the diaphragm 124 abuts against the mounting bracket 123, and the mounting plane of the outer edge of the 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 third rigid housing 111 and the fourth rigid housing 112, it can be assembled with the third rigid housing 111 again. A single speaker will not cross the parting line between the third rigid housing 111 and the fourth rigid housing 112, which is convenient for assembly. And such a setting can make the contact point between the concha and the third 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 housing.

[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 second 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 fourth rigid housing 112 and the third flexible body 113. In this way, the sound outlet hole 114 can be closer to the ear hole, which is beneficial to improving the listening effect. Moreover, the sound outlet hole 114 does not need to straddle the third rigid housing 111 and the fourth 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 third 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 ear hole, 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 inside the third rigid housing 111. Since the third flexible body 113 is not provided on the third rigid housing 111 or only partially provided, the space of the third rigid housing 111 is larger than that of the fourth rigid housing 112. Setting the widest part 125 of the radius of the sound generating assembly 12 inside the third 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 third 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 third rigid housing 111, making full use of the space in the third rigid housing 111 so as to be able to set a larger sound generating component 12 for the oscillator.

[0072] In some embodiments, please refer to Figure 3 , in the radial direction of the sound generating component 12, the third 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 third rigid housing 111 is squeezed due to the covering of the third flexible body 113, ensuring that the third rigid housing 111 has a larger internal space available for use.

[0073] In some embodiments, please refer to Figure 3 , the third 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 third rigid housing 111, the internal space of the third 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 receive 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. On the basis of reasonably using the internal space of the third 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 conduction cover 122 of at least one speaker is located in the fourth rigid housing 112 and faces the fourth rigid housing 112. The magnetic conduction cover has an end face 1221 facing the fourth rigid housing 112, and the end face 1221 is a flat surface.

[0077] Furthermore, in some embodiments, please refer to Figure 3, the plane of the outermost loop of the end face 113a of the third flexible body 113 is the first reference plane A1. In a 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 fourth rigid housing 112, the radius of curvature of the area on the fourth rigid housing 112 (here it refers to the outer contour line of the fourth rigid housing 112) opposite to the end face 1221 of the magnetic conduction cover 122 is greater than the radius of curvature of at least a part of the other areas on both sides thereof. In this way, the curvature of the fourth rigid housing 112 at this place can be set smaller, so as to leave more space for the corresponding part of the outer third flexible body 113, and increase the thickness of the third flexible body 113 at this place without increasing the overall thickness of the second housing 11. This area is close to the contact center (that is, the center position where the third flexible body 113 contacts the wearer), and setting a larger thickness can improve the wearing comfort.

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

[0079] In some embodiments, please refer to Figure 3 , the plane of the outermost loop of the end face 113a of the third flexible body 113 is the first reference plane A1. In a 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 fourth rigid housing 112, the radius of curvature R2 of the area on the third flexible body 113 (here it refers to the outer contour line of the third 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 where the third flexible body 113 contacts the wearer), and setting a larger radius of curvature can increase the contact area and improve the comfort.

[0080] In some embodiments, please refer to Figure 3, on the second preset section, the curvature radius R2 of the area on the third flexible body 113 (here it refers to the outer contour line of the third 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. 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 third flexible body 113 is located is the first reference plane A1. On the 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 fourth rigid housing 112, the thickness of the area on the third flexible body 113 opposite to the end face of the magnetic conduction 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 area is close to the contact center. Setting a relatively thick silica gel can improve comfort.

[0082] In some embodiments, please refer to Figure 3 , on the second preset section, the thickness of the area on the third flexible body 113 opposite to the end face of the magnetic conduction 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 area is close to the contact center. Setting a relatively thick silica gel can improve comfort.

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

[0084] The curvature radius of the predetermined area 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 area is close to the contact center C2 (that is, the central position on the third 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 third flexible body 113 within the predetermined area C1 may be 0.2 mm - 1 mm. For example, it may be 0.2 mm, 0.5 mm, 0.8 mm, or 1.0 mm. By setting the thickness of the third flexible body 113 within the predetermined area C1 in this way, it is possible to ensure the wearing comfort while avoiding increasing the overall size of the second 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. The central axis A3 of the sound - outlet hole 114 passes through the sound - transmission channel 1231. The design of the dual - speaker enables an increase in the area of the diaphragm 124 while occupying the same radial area, improving the BL value of the speaker under the same volume, thereby obtaining higher sound efficiency. 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 second accommodating cavity 110 more open and direct.

[0087] Among them, in some embodiments, please refer to Figure 3 , the sound - transmission channel 1231 is a common front cavity for 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 a common back cavity for 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 circular line plane of the end face 113a of the third flexible body 113 is the first reference plane A1. In 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 lines connecting the center of the mounting bracket 123 and the two ends of the third flexible body 113 form an angle α2 of 130° - 160°. For example, the angle α2 may be 130°, 140°, 150°, 160°. By setting the covering range of the third 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 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 connecting lines between the center of the mounting bracket 123 and the two ends of the third 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 third 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 component 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 of the centers of the magnetic shielding covers 122 of the two speakers penetrates through the third rigid housing 111, or the connecting line A4 of the centers of the magnetic shielding covers 122 of the two speakers does not pass through the fourth rigid housing 112 and the third flexible body 113. In this embodiment, the center of the entire sound generating component 12 can be made closer to the third rigid housing 111, thereby making more full use of the internal space of the third 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 component 12 are both arranged opposite to the third 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 component 12 are arranged opposite to the third rigid housing 111. Since the space of the third rigid housing 111 is larger than that of the fourth rigid housing 112, by arranging both sides of the widest part in the axial direction of the sound generating component 12 opposite to the third rigid housing 111, a sound generating component 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 component 12 includes a mounting bracket 123 and at least one speaker, the speaker is mounted on the mounting bracket 123, and the distance between the center 1232 of the surface of the mounting bracket 123 facing away from the magnetic shielding cover 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 third 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 third 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 component 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 conduction 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 component in the second housing 11 in this way, more volume of the sound generating component can be distributed towards the third rigid housing 111, thereby making full use of the relatively abundant internal space of the third rigid housing 111, so that the second housing 11 can accommodate a sound generating unit with a larger volume.

[0097] In some embodiments, as Figure 19 shown, the earhook 3 has an earhook symmetry plane A2 arranged along its length direction. The earhook symmetry plane A2 intersects with the outermost loop of the end face of the third flexible body 113 to form two intersection points; on the earhook symmetry plane A2, the earhook 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 earhook 3 has an earhook symmetry plane A2 arranged along its length direction. The earhook symmetry plane A2 intersects with the outermost loop of the end face of the third flexible body 113 to form two intersection points; on the earhook 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° - 115°. For example, α13 can be 85°, 90°, 100°, 105°, or 115°.

[0099] In some embodiments, when the earphone is in its natural state (i.e., without external force intervention), on the earhook symmetry plane A2, the sound-emitting part 1 and the abutting part 2 are arranged at intervals. At this time, the second reference point O2 can refer to the end point of the shortest connection line between the sound-emitting part 1 and the abutting part 2 on the sound-emitting part 1. In some embodiments, when the earphone is in its natural state (i.e., without external force intervention), on the earhook symmetry plane A2, the sound-emitting part 1 and the abutting part 2 are in mutual abutment. At this time, the second reference point O2 can refer to the midpoint of the arc segment formed by the abutting area of the sound-emitting part 1 and the abutting part 2 on the earhook symmetry plane A2. By setting the wrap angle of the third flexible body 113 in this way, it can be ensured that the contact area between the human ear and the second housing in most people or the standard head model covers the third flexible body 113, thus ensuring comfort and taking into account leaving more space for the third 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 third flexible body 113 is located; or the earhook symmetry plane A2 of the earhook 3 and the outermost loop line of the end face 113a of the third flexible body 113 have two intersection points, 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 position relationship between the earhook 3 and the second housing 11 in this way, it can be made that the extension direction of the earhook 3 is approximately parallel to the extension direction of the helix after the earphone is worn, 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 third flexible body 113 is located; or the earhook symmetry plane A2 of the earhook 3 and the outermost loop line of the end face 113a of the third flexible body 113 have two intersection points, 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 third 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 third flexible body 113 (specifically referring to the length of the outer contour line of the third 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 third flexible body is 16 mm - 25 mm. For example, it can be 16 mm, 19 mm, 21 mm, 23 mm, or 25 mm.

[0105] Setting the length of the outer contour line of the third flexible body 113 in this way helps 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 third 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 of the outermost loop line of the end face 113a of the third 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 first reference plane A1, the end closer to the earhook 3 of the third flexible body 113 is the first end 113a, and the end farther from the earhook 3 is the second end 113b. In the region D8 at one-third of the end face of the third flexible body 113 away from the second end 113b, the thickness in the direction of the outer wall normal 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 closer to the earhook 3 of the third flexible body 113 is the first end 113a, and the end farther from the earhook 3 is the second end 113b. In the region D8 at one-third of the end face of the third flexible body 113 away from the second end 113b, the thickness in the direction of the outer wall normal 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 second housing 11 is nearly spherical, the connection tangent of the earhook and the second housing 11 forms an angle of 18° - 35° with the first reference plane, the distance between the tangent of the earhook and the first reference plane is 6 mm - 8 mm, and the length of the third flexible body is 16 mm - 25 mm, the contact center area between the second housing 11 and the human head model is located in the region at one-third of the end face of the third flexible body away from the second end. Setting the thickness of the third flexible body at this position can make the contact center area close to the midpoint of the length of the third flexible body, reduce the probability of the human ear contacting the rigid housing, and take into account reducing the volume of the second 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 second housing 11 and the human head model is located at the area one-third of the distance from the first end 113a of the third flexible body 113 to the end face. At this time, on the first preset cross-section, in the area one-third of the distance from the first end 113a of the third flexible body 113 to the end face, 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 third flexible body at this position, the contact center area can be made closer to the midpoint of the length of the third flexible body, reducing the probability of the human ear contacting the hard housing, and taking into account reducing the volume of the second 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 third 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 first reference plane A1, three-point arcs are fitted according to the two end points of the outer wall of the third flexible body 113 and the midpoint of the third 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 cross-section, three-point arcs are fitted according to the two end points of the outer wall of the third flexible body 113 and the midpoint of the third flexible body 113. The angle γ1 formed by the connection lines between the sound cavity center and the two end points of the third flexible body 113 is between 145° and 170° (including the end point 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 third 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 first reference plane A1, the two end points of the outer wall of the third flexible body 113 are respectively connected to the midpoint 113c of the outer wall of the third 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 lines connecting the two endpoints of the outer wall of the third flexible body 113 to the midpoint 113c of the outer wall of the third flexible body 113 form an included angle β1 of 90° - 100°. For example, the included angle β1 can be 90°, 92°, 94°, 96°, 98°, or 100°.

[0114] By setting the wrap angle of the third flexible body 113 in this way, it can ensure that the contact areas between the human ear and the second housing are covered by the third flexible body 113 for most people or the standard human head model, thus ensuring comfort and taking into account leaving more space for the third rigid housing 111, so as to ensure that the inner cavity volume will not be overly occupied by the silicone area.

[0115] In some embodiments, please refer to Figure 10 ( Figure 10 The positions of two sound outlets are shown in [reference], one of which is labeled 114 in the figure, and the other optional position is labeled 114a) in the figure. The plane of the outermost loop of the end face 113a of the third 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 first reference plane A1, the end of the third 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. The included angle θ1 formed by the line connecting the first end 113a to the contact center of the outer wall of the third flexible body 113 and the line connecting the first end 113a to the center of the vertical positions of the sound outlet 114 is 10° - 85°. For example, the included 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 third 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. The included angle θ1 formed by the line connecting the first end 113a to the contact center of the outer wall of the third flexible body 113 and the line connecting the first end 113a to the center of the vertical positions of the sound outlet 114 is 10° - 85°. For example, the included angle θ1 can be 10°, 20°, 30°, 50°, 70°, 80°, or 85°. By setting the position of the sound outlet 114 in this way, the directivity of the sound outlet 114 to the ear canal can be better, so as to obtain a larger listening volume.

[0117] In some embodiments, the contact center area between the second housing 11 and the human head model is located in the area at one-third of the end face of the third flexible body 113 away from the second end. The included angle between the line connecting the endpoint of the first reference plane closer to the earhook and the center of the sound outlet 114 and the line connecting the endpoint of the first reference plane closer to the earhook and the contact center is between 10° and 85°.

[0118] When the second shell is a near-spherical shape, the connection tangent between the ear hook and the second 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 second 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 third flexible body 113 and the fourth 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 third 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 third flexible body 113 is located, the ratio of the two widths D11 and D12 of the second 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 second 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 second 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 second accommodating cavity 110 closer to a sphere, so as to obtain a vibrator cavity that is more suitable for wearing, larger in volume, and easier to assemble.

[0123] In some embodiments, the thickness of the contact area of ​​the third 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 second 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 first housing 21. The first housing 21 includes a first rigid housing 211, a second rigid housing 212 disposed towards the back of the wearer's ear when worn, and a first flexible body 213 for contacting the back of the wearer's ear. The first rigid housing 211 and the second rigid housing 212 enclose a first accommodation cavity 210. The first flexible body 213 covers the outer wall of the second rigid housing 212. Among them, the outer wall of the first rigid housing 211 is not covered by the first flexible body 213 and is in an exposed state, or the first flexible body 213 extends from the outside of the second rigid housing 212 to the outside of the first rigid housing 211 and covers a part of the outer wall of the first rigid housing 211, so that the remaining outer wall of the first 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 first rigid housing 211, a second rigid housing 212, and a first flexible body 213. The first rigid housing 211 and the second rigid housing 212 enclose a first accommodation cavity 210. The first rigid housing 211 and the second rigid housing 212 can provide better support to support the internal structure. Usually when worn, the second rigid housing 212 will face the back of the wearer's ear. In this embodiment, the first flexible body 213 is covered on the outer wall of the second rigid housing 212 to reduce the possibility of the second 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 first flexible body 213 mainly covers the second rigid housing 212, and basically does not affect the external structure and internal space of the first rigid housing 211, ensuring the utilization rate of the internal space of the first rigid housing 211.

[0127] Further, in some embodiments, please refer to Figure 2 and 14The abutting part 2 includes a first shell 21, which includes a first hard shell 211, a second hard shell 212 for being arranged behind the ear of the wearer when worn, and a first flexible body 213 for contacting the back of the ear of the wearer. The first hard shell 211 and the second hard shell 212 enclose a first accommodating cavity 210; the first flexible body 213 covers the outer wall of the second hard shell 212, wherein the thickness of the area covered by the first flexible body 213 on the second hard shell 212 is less than the thickness of the first hard shell 211. The first flexible body 213 is coated on the outer wall of the second hard shell 212, so the second hard shell 212 part has a double-layer wall thickness, and the first hard shell 211 is not coated on the outer wall of the first flexible body 213, so the first hard shell 211 part only needs a single-layer wall thickness, so that the first hard shell 211 part occupies a small volume of the first accommodating cavity 210, leaving a large space for the battery, and a larger battery can be placed to increase the endurance effect of the headset.

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

[0129] Similar to the structures of the third hard shell 111 and the fourth hard shell 112 , the first flexible body 213 extends from the outside of the second hard shell 212 to the outside of the first hard shell 211 and covers a portion of the outer wall of the first hard shell 211 .

[0130] Similar to the structure of the third hard shell 111 and the fourth hard shell 112, the end face of the first flexible body 213 extends to the end face of the first hard shell 211. Thanks to the flexible deformation characteristics of the first flexible body 213, the first flexible body 213 and the end face of the first hard shell 211 can cooperate to form a better sealing and waterproof effect.

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

[0132] Similar to the structures of the third hard shell 111 and the fourth hard shell 112 , the end surface of the first flexible body 213 is flush with the outermost loop of the end surface of the second hard shell 212 in the inner and outer directions, or the first flexible body 213 does not cover the outer wall of the first hard shell 211 .

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

[0134] Similar to the structure of the third rigid housing 111 and the fourth rigid housing 112, the end face of the first rigid housing 211 and the end face of the second 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 first housing 21 has a long strip structure. In a cross-section perpendicular to the length direction of the first housing 21, the ratio of the line connecting the two ends of the first 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 line connecting the two ends of the first flexible body 213 to the maximum radial dimension of the housing is between 0.9 and 1. For example, this ratio can be 0.9, 0.92, 0.94, 0.96, 0.98, or 1. Such a setting method limits the covering area of the first flexible body 213 covering the first 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 first flexible body covering the first 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 first accommodating cavity 210 and reducing the space utilization rate. In the solution of the present application, the described between A and B, located between A and B, includes the end values A and B.

[0136] In some embodiments, please refer to Figure 15 , the first housing 21 has a long strip structure. In a cross-section perpendicular to the length direction of the first housing 21, the distance D13 from the midpoint of the outer wall of the first 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 first housing 21 is inserted into the wearing position in the ear, the ear hook 3 part 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, so that the center of gravity is too far from the outside of the human body, resulting in the earphone being prone to falling.

[0137] In some embodiments, please refer to Figure 17, the first rigid housing 211 is in a U-shaped structure. That is to say, the first 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, and the second rigid housing 212 is located between the two side walls 2112 of the U-shaped structure. The first rigid housing 211 includes a connecting wall 2111 and the second rigid housing 212 spliced to form a circumferential wall of the abutting portion 2. Define the connecting direction of the two side walls as the horizontal direction, and the direction perpendicular to the horizontal direction and away from the second rigid housing 212 as the vertical direction. This setting method makes the first rigid housing 211 generate a resisting force on the side wall when shaking in the horizontal direction, and there is a joint between the first rigid housing 211 and the second rigid housing 212 in the vertical direction. The longer the joint in this direction, the more difficult it is to disassemble the first rigid housing 211 and the second rigid housing 212 after gluing, making the two housings more firmly and reliably bonded; and the two side surfaces of the first rigid housing 211 are complete planes, and when arranging the antenna or touch circuit, there is no need to arrange across the housing, leaving a large space for the arrangement of the antenna and touch circuit, which is convenient for assembly; since the first flexible body 213 only covers the second rigid housing 212, therefore, the U-shaped structure setting method makes the first flexible body 213 not extend to the touched area on the side surface of the first rigid housing 211, and it is not necessary to cause more serious wear to the rubber layer due to reasons such as touching, and it is not easy to come unstuck.

[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 touch circuit, there is no need to arrange across the housing, leaving a large space for the arrangement of the antenna and touch circuit, which is convenient for assembly; since the first flexible body 213 only covers the second rigid housing, therefore, the U-shaped structure setting method makes the first flexible body 213 not extend to the touched area on the side surface of the first rigid housing 211, and it is not necessary to cause more serious wear to the first flexible body 213 due to reasons such as touching, and it is not easy to come unstuck.

[0139] In some embodiments, both the first rigid housing 211 and the second 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 bottom surfaces 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 first rigid housing 211 and the second rigid housing 212 are spliced to form the annular peripheral wall of the abutting portion 2. This setting method not only retains a 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 first 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 second 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 first rigid housing 211 and the second rigid housing 212 have a buckle-shaped structure. At least one side wall of the first rigid housing 211 and at least one side wall of the second rigid housing 212 are spliced to form a mounting base, and the first flexible body 213 covers at least a part of the mounting base.

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

[0142] In some embodiments, the first flexible body 213 covers the second rigid housing 212 and the earhook 3, and the first flexible body 213 and the second rigid housing 212 and the earhook 3 are integrally injection-molded. This production method enables the first flexible body 213 to cover the joint surface of the second rigid housing 212 and the earhook 3, which can prevent the joint surface of the second 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 portion 1 and the abutting portion 2 are in mutual abutment, and the third flexible body 113 and the first flexible body 213 remain 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 portion 1 and the abutting portion 2.

[0144] In some embodiments, please refer to Figure 1 and 20, in the natural state, the outer wall of the first flexible body 213 has a concave surface 2130 facing the third flexible body 113. When the earphone 100 is in the natural state, at least a part of the third 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 first 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 first housing 21 has an elongated structure. In a cross-section perpendicular to the length direction of the first housing 21 and passing through the midpoint of the length direction, the outer wall of the concave surface is recessed towards the inside of the first housing 21.

[0147] In other embodiments, the first housing 21 has an elongated structure. In a cross-section perpendicular to the length direction of the first housing 21 and passing through the midpoint of the length direction, the first flexible body 213 is thinner in the middle and thicker at both ends. This setting makes the curvature of the first flexible body 213 in the direction close to the human ear more conform to the design of the human ear, increases the area of contact between the first 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 first housing 21 has an elongated structure. In a cross-section perpendicular to the length direction of the first housing 21, the included angle δ1 formed by the connection lines between the two ends of the first flexible body 213 (i.e., the two end points of the outer contour line of the first flexible body 213) and the centroid of the first 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 first flexible body is too small, the rigid housing may come into contact with the skin of the wearer during the wearing state, resulting in insufficient comfort.

[0149] In some embodiments, the first housing 21 has an elongated structure. In a cross-section perpendicular to the length direction of the first housing 21, the included angle δ1 formed between the centroid of the first accommodating cavity 210 and the line connecting the two end points of the outer contour line of the first 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 first flexible body is too small, the rigid housing may contact the skin of the wearer during the wearing state, resulting in insufficient comfort.

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

[0151] In some embodiments, the first housing 21 has an elongated structure. In a cross-section perpendicular to the length direction of the first housing 21, the arc length of the outer contour line of the first 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 first flexible body 213 is too small, the rigid housing may contact the skin of the wearer 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 second flexible body 32. The second flexible body 32 wraps the support rib 31. The first flexible body 213 and the second 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 first flexible body 213 and the second flexible body are separately arranged and do not contact each other. In this way, the preparation of the second flexible body and the first flexible body 213 can be separated, reducing the complexity of the process. In other embodiments, the ear hook 3 can also omit the support rib.

[0154] In some embodiments, please refer to Figure 15, the first housing 21 has an elongated structure. In a cross-section perpendicular to the length direction of the first housing 21, the outer wall of the first flexible body 213 has a first point Q1, a second point Q2, and a third point Q3 that are sequentially distributed along its arc length. The distance from the first point to the centroid of the first accommodating cavity 210 and the distance from the third point to the centroid of the first accommodating cavity 210 are both greater than the distance from the second point to the centroid of the first accommodating 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 first housing 21 has an elongated structure. In a cross-section perpendicular to the length direction of the first housing 21, the second point is located at the midpoint of the outer wall of the first 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 first housing 21 has an elongated structure. In a cross-section perpendicular to the length direction of the first housing 21, the included angle formed by the connection line between the first point and the centroid of the first accommodating cavity 210 and the connection line between the second point and the centroid of the first accommodating cavity 210 is equal to the included angle formed by the connection line between the second point and the centroid of the first accommodating cavity 210 and the connection line between the third point and the centroid of the first accommodating 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 first accommodating cavity 210 is equal to the distance from the third point to the centroid of the first accommodating 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 first flexible body 213 at the first point and the thickness of the first 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 first flexible body 213 at the third point and the thickness of the first 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 first flexible body 213 at the first point Q1 and the thickness D15 of the first flexible body 213 at the second point Q2 is between 0.2 mm and 0.5 mm, or is less than or equal to 0.2; and / or, the difference between the thickness D16 of the first flexible body 213 at the third point Q3 and the thickness D15 of the first flexible body 213 at the second point Q2 is between 0.2 mm and 0.5 mm, or is 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 to 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 first flexible body 213 at the first point is between 1.4 mm and 1.7 mm, and / or the thickness D15 of the first flexible body 213 at the second point is between 1.0 mm and 1.3 mm, and / or the thickness D16 of the first 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 to 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 first flexible body 213 at the first point is between 1.4 mm and 1.7 mm, or is greater than or equal to 0.3 mm and less than or equal to 1.4 mm; and / or, the thickness D15 of the first flexible body 213 at the second point is between 1.0 mm and 1.3 mm, or is greater than or equal to 0.2 mm and less than or equal to 1.3 mm; and / or, the thickness D16 of the first flexible body 213 at the third point is between 1.4 mm and 1.7 mm, or is 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 to 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 line connecting the first point to the centroid of the first accommodation cavity 210 and the line connecting the third point to the centroid of the first accommodation 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 to 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 line connecting the first point to the centroid of the first accommodating cavity 210 and the line connecting the third point to the centroid of the first accommodating cavity 210 form an angle δ2 of 165°-175°, or an angle δ2 greater than or equal to 90° and less than 165°. For example, the angle δ2 may be 90°, 100°, 110°, 120°, 130°, 140°, 150°, 165°, 168°, 172°, or 175°. Such a configuration can adapt to the soft tissue shape of the human body behind the ear and the head opposite to the ear, increase the contact area, reduce the pressure, and improve the wearing comfort.

[0164] In some embodiments, the first accommodating cavity 210 is a battery cavity, and the abutting portion 2 includes a battery, and the battery is accommodated in the battery cavity.

[0165] In some embodiments, the ear hook 3 has an ear hook symmetry plane A2 along its length direction, and the ear hook symmetry plane A2 intersects with the outermost loop line of the end surface of the first flexible body 213 to form two intersection points; the outer wall of the abutting portion 2 has a third reference point O3, and the distance between the third reference point O3 and the outer wall of the sound-emitting portion 1 is the shortest, and the angle δ3 formed by the third reference point O3 and the line between the two intersection points is between 80° and 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 subject to external force interference), on the earhook symmetry plane A2, the sound-emitting portion 1 and the abutting portion 2 are spaced apart, and at this time, the third reference point O3 may refer to the end point of the shortest line between the sound-emitting portion 1 and the abutting portion 2 on the abutting portion 2. In some embodiments, when the earphone is in a natural state (i.e., not subject to external force interference), on the earhook symmetry plane A2, the sound-emitting portion 1 and the abutting portion 2 abut against each other, and at this time, the third reference point O3 may refer to the midpoint of the arc segment formed by the abutting area of ​​the sound-emitting portion 1 and the abutting portion 2 on the earhook symmetry plane A2.

[0167] Setting the wrap angle of the first flexible body 213 in this way can satisfy the requirement that the contact area between the human ear and the first shell 21 of most people or a standard human head model is covered with the first flexible body 213, thereby ensuring comfort, and leaving more space for the first hard shell 211, thereby ensuring that the inner cavity volume is not excessively occupied by the silicone area.

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

[0169] It should be noted that the materials of the third flexible body 113 and the first flexible body 213 are not limited to silicone, rubber, elastic resin, polyurethane material, polydimethylsiloxane, PVC, TPE and other materials. As long as it is a flexible material, it 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 second housing 11, and the sound generated by the sound generating component 12 is output outward through the sound outlet hole 114. The earhook 3 has an earhook 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 earhook symmetry plane A2 is between 15° and 45°, and is located on the lower side of the earhook 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 earhook symmetry plane A2 to be between 15° and 45°, the directivity of the sound outlet hole 114 to the ear canal is better in the wearing state, 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 earhook symmetry plane (that is, the long axis of the sound outlet hole is perpendicular or nearly perpendicular to the earhook 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 third rigid housing 111 that is not covered by the third flexible body 113 to prevent the sound outlet hole 114 from straddling the third rigid housing 111 and the fourth rigid housing 112 at the same time. Define the included angle between the normal line of the earphone sound outlet hole pointing from the sound generating part to the outside (the normal line is the central axis of the sound outlet hole 114) and the earhook symmetry plane A2 as α, and the included angle between the earhook symmetry plane A2 and the human horizontal plane as β. As Figure 26 shown, fix α = 0° (that is, the earhook 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 sound output by the earphone 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 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 second 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 second 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 fourth rigid housing 112 and the third flexible body 113 to avoid the sound outlet hole 114 straddling the third rigid housing 111 and the fourth rigid housing 112 at the same time. Rotate the longitudinally arranged sound outlet hole described above by 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 by 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. 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 shown in FIGS. 108-A and 108-B, 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, in some positions near the sound source in the reflection field, sound enhancement areas will be formed 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 included 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. FIGS. 31A- Figure 31 - C are the simulation results when the values of h-gap are 5 mm, 10 mm, 15 mm, 20 mm respectively, the values of θ are 0°, 60°, 120°, 180°, 240°, 300° respectively, and the sound source signal is 2000 Hz. Taking the equal sound pressure level line diagram 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 obliquely points to the reflecting wall (60°, 300°), the maximum sound pressure level can be generated on one side (the area of the large sound pressure level area is the largest), and the large 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 regarded 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 regarded 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 FIG. 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 the 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°) reduces sound leakage by about 2 dB compared with 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 earphone comprises a sound-generating part for inserting into the concha cavity of the wearer, an abutting part for abutting against 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 earphone is clamped and worn on the wearer's ear helix, and the abutting part comprises: a first hard shell; A second hard shell is arranged behind the ear of the wearer when the wearer wears the device, and the second hard shell and the first hard shell are enclosed to form a first accommodating cavity; A first flexible body is covered on the outer wall of the second hard shell and is used to contact behind the ear of the wearer, wherein the outer wall of the first hard shell is not covered with the first flexible body and is exposed, or the first flexible body extends from the outer side of the second hard shell to the outer side of the first hard shell and covers a part of the outer wall of the first hard shell, so that the rest of the outer wall of the first hard shell is exposed.

2. The ear-clip earphone according to claim 1, characterized in that: The abutting portion has a long strip structure. In a cross section perpendicular to the length direction of the abutting portion, the ratio of a line connecting two ends of the first flexible body to a maximum radial dimension of the abutting portion is between 0.9 and 1.

3. The ear-clip earphone according to claim 1, characterized in that: The ear hook comprises a supporting rib and a second flexible body, wherein the second flexible body wraps the supporting rib, and the first flexible body and the second flexible body are an integral structure or a separate structure.

4. The ear-clip earphone according to claim 3, characterized in that: The first hard shell includes a connecting wall and two side walls, the two side walls are arranged at opposite ends of the connecting wall, the second hard shell is located between the two side walls, and the connecting wall of the first hard shell and the second hard shell are spliced ​​to form an annular circumferential wall of the abutment portion.

5. The ear-clip earphone according to claim 4, characterized in that: At least one of the side walls serves as a mounting base, and an antenna and / or a touch circuit board is mounted on the mounting base.

6. The ear-clip earphone according to claim 3, characterized in that: The first hard shell and the second hard shell both have a connecting wall and a side wall, and the connecting wall of the first hard shell and the connecting wall of the second hard shell are spliced ​​to form an annular peripheral wall of the abutting portion.

7. The ear-clip earphone according to claim 6, characterized in that: The side wall of the first hard shell and the side wall of the second hard shell are spliced ​​to form a mounting base, and an antenna and / or a touch circuit board are mounted on the mounting base.

8. The ear-clip earphone according to claim 6, characterized in that: The side wall of the first hard shell and / or the side wall of the second hard shell serves as a mounting base, and an antenna and / or a touch circuit board is mounted on the mounting base.

9. The ear-clip earphone according to claim 1, characterized in that: The outer wall of the first flexible body has a concave surface disposed toward the sound-emitting portion, and the sound-emitting portion contacts at least a portion of the concave surface in a natural state.

10. The ear-clip headphone according to claim 9, characterized in that: The abutting portion has a long strip structure, and in a cross section perpendicular to the length direction of the abutting portion, the depth of the concave surface is between 0.07-0.

25.

11. The ear-clip earphone according to claim 9, characterized in that: The abutting portion has a long strip structure, and in a cross section perpendicular to the length direction of the abutting portion and passing through a midpoint of the length direction, the concave surface is recessed toward the inside of the abutting portion.

12. The ear-clip earphone according to claim 9, characterized in that: The abutting portion has a long strip structure, and in a cross section perpendicular to the length direction of the abutting portion and passing through the midpoint of the length direction, the first flexible body is thin in the middle and thick at both ends.

13. The ear-clip headphone according to claim 1, wherein: The abutment portion has a long strip structure. In a cross section perpendicular to the length direction of the abutment portion, the centroid of the first accommodating cavity and the line connecting the two end points of the outer contour line of the first flexible body form an angle greater than or equal to 160°, or an angle greater than or equal to 145° and less than 160°.

14. The ear-clip headphone according to claim 1, wherein: The abutting portion has a long strip structure, and in a cross section perpendicular to the length direction of the abutting portion, the arc length of the outer contour line of the first flexible body is greater than or equal to 18 mm, or greater than or equal to 12 mm and less than 18 mm.

15. The ear clip type earphone according to claim 1, characterized in that: The abutment portion has a long strip structure. In a cross section perpendicular to the length direction of the abutment portion, the outer wall of the first flexible body has a first point, a second point and a third point distributed in sequence along its arc length. The distance from the first point to the centroid of the first accommodating cavity and the distance from the third point to the centroid of the first accommodating cavity are both greater than the distance from the second point to the centroid of the first accommodating cavity.

16. The ear-clip headphone according to claim 15, characterized in that: The second point is located at the midpoint of the outer wall of the first flexible body.

17. The ear clip type earphone according to claim 15, characterized in that: An angle formed by a line connecting the first point to the centroid of the first accommodating cavity and a line connecting the second point to the centroid of the first accommodating cavity is equal to an angle formed by a line connecting the second point to the centroid of the first accommodating cavity and a line connecting the third point to the centroid of the first accommodating cavity.

18. The ear clip type earphone according to claim 15, characterized in that: The distance from the first point to the centroid of the first accommodating cavity is equal to the distance from the third point to the centroid of the first accommodating cavity.

19. The ear clip type earphone according to claim 15, characterized in that: The difference between the thickness of the first flexible body at the first point and the thickness of the first flexible body at the second point is between 0.2 mm and 0.5 mm, or less than or equal to 0.2; and / or The difference between the thickness of the first flexible body at the third point and the thickness of the first flexible body at the second point is between 0.2 mm and 0.5 mm, or less than or equal to 0.

2.

20. The ear clip type earphone according to claim 19, characterized in that: The thickness of the first flexible body at the first point is between 1.4 mm and 1.7 mm, or is greater than or equal to 0.3 mm and less than or equal to 1.4 mm; and / or The thickness of the first flexible body at the second point is between 1.0 mm and 1.3 mm, or is greater than or equal to 0.2 mm and less than or equal to 1.3 mm; and / or The thickness of the first flexible body 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.

21. The ear clip type earphone according to claim 15, characterized in that: A line connecting the first point to the centroid of the first accommodating cavity and a line connecting the third point to the centroid of the first accommodating cavity form an angle of 165°-175°, or an angle greater than or equal to 90° and less than 165°.

22. The ear-clip headphone according to claim 1, wherein: The first accommodating cavity is a battery cavity, the abutting portion includes a battery, and the battery is accommodated in the battery cavity.

23. The ear-clip headphone according to claim 1, characterized in that: The ear hook has an ear hook symmetry plane along its length direction, 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; A reference point is provided on the outer wall of the abutting portion, the distance between the reference point and the outer wall of the sound-generating portion is the shortest, and an angle formed by a line connecting the reference point and the two intersection points is between 80° and 130°.

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