Earhook headphones with adjustable sound outlet position
By designing a rotatable eccentric sound output nozzle in the headphones, the problem that existing earphones cannot adjust the sound output port position is solved, and the flexible use and comfortable wearing of the headphones are realized, meeting the needs of different scenarios, and improving the hollow design Sound conduction effect.
Patent Information
- Application Number
- CN202411270871.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2044-09-11
AI Technical Summary
The existing open earphones cannot adjust the position of the sound outlet, resulting in unstable wear and cannot meet the needs of different usage scenarios, especially in noisy environments, which cannot effectively reduce the interference of external ambient sounds.
An ear-mounted earphone with adjustable sound outlet position is designed. By setting an eccentric rotatable sound outlet on the front surface of the headphone part, the sound outlet of the sound outlet can be adjusted according to the needs to realize the sound outlet. Flexible adjustment without changing the relative position between the ear hook and the headset.
It improves the comfort and flexibility of wearing headphones, and can adjust the sound outlet position according to the scene needs to meet different usage needs. At the same time, the air flow and sound surround effect are improved through hollow design and ring sound output cavity.
Smart Images

Figure CN118785038B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of earphones, and in particular to an earhook earphone with an adjustable sound outlet position. Background Art
[0002] Existing headphones can generally be divided into in-ear headphones, semi-in-ear headphones and open-ear headphones according to the sound transmission method. For open-ear headphones, they mostly adopt an ear-hook structure. Common ear-hook headphones include: an ear-hook component and a movement body. When in use, hang the ear-hook component on the auricle so that the sound-emitting part of the movement body corresponds to the ear canal. In the design and production of ear-hook Bluetooth headphones, they are usually designed according to the heads of the mainstream population, so they are not fully adapted to each different user. Different users cannot fully adapt when wearing and using due to their own physical differences. The existing ear-hook headphones cannot be adjusted, which brings inconvenience to users.
[0003] In order to overcome the above problems, the following technical solutions have been proposed. See the Chinese utility model patent with publication number CN220653518U, which discloses a multi-directional adjustable ear-hook earphone, which adopts the following technical solutions: including an earphone body, on which a hook is arranged, and also including: a fixed seat fixedly connected to the earphone body, wherein a rotating seat is rotatably connected to the fixed seat, and one end of the hook is rotatably connected to the rotating seat; a connecting tube fixedly connected to the other end of the hook, wherein an avoidance groove is provided in the connecting tube; this patent sets the hook on the earphone body in a multi-angle adjustable manner, so that the earphone body can be suitable for more people.
[0004] The applicant has proposed a utility model patent for "an adjustable angle earhook headset", see the Chinese utility model patent with publication number CN219893423U. The technical solution adopted is similar to the principle of the above patent document, both of which adopt the method of pivoting the earhook with the headset body. Although such a technical solution can adjust the relative angle between the earhook and the headset body by relative rotation, such a technical solution has the following shortcomings when used in open earhook headsets: First, since the sound outlet of the open earphone does not directly extend into or half extend into the ear canal, but is only located at the position of the concha cavity in the auricle, it can ensure that the user can receive the external environmental sound while listening to the sound of the headset. Therefore, the position of the earhook and the headset in the open headset is carefully designed. If the relative angle between the earhook and the headset is adjusted, it will cause the user to wear it unstably, and the earphone will fall off the auricle. Secondly, the existing open earhook headset has a single application scenario. It is restricted by the position of the earhook and the headset, and can only be used as an open headset. The position of the sound outlet of the headset is fixed and the user cannot adjust it. For example, when the user is in a relatively noisy environment, he or she hopes to reduce the interference of external ambient sound, which cannot be achieved with traditional open ear-hook headphones.
[0005] Based on the above, the inventor proposes the following technical solutions to address the deficiencies in the prior art. Summary of the invention
[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and propose an earhook earphone with an adjustable sound outlet position. The present invention only adjusts the position of the sound outlet without changing the relative position between the earhook part and the earphone part.
[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions: an ear-hook earphone with adjustable sound outlet position, comprising: an earphone part and an ear-hook part, one end of the ear-hook part is fixedly connected to the earphone part, the earphone part has a front surface close to human skin when worn, the earphone part comprises: a shell and a speaker unit arranged in the shell, a through hole is opened on the end of the front surface away from the connection position of the ear-hook part and the earphone part, and a sound outlet mouth is rotatably installed at the position where the through hole is located; the sound outlet mouth comprises: an integrally formed connection part and The sound outlet portion, a connected sound outlet cavity is formed in the connecting portion and the sound outlet portion, the connecting portion can be rotatably mounted on the front surface of the earphone portion, the sound outlet portion is provided with a sound outlet connected to the sound outlet cavity, the sound generated by the speaker unit enters the sound outlet cavity through the through hole, and is conducted out from the sound outlet; the connecting portion and the sound outlet of the sound outlet mouth are eccentrically arranged, that is, the position of the sound outlet is eccentrically distributed relative to the rotation axis of the connecting portion and the earphone portion, when the sound outlet mouth rotates relative to the earphone portion, the sound outlet rotates synchronously around the rotation axis, so that the position of the sound outlet relative to the earphone portion changes.
[0008] Furthermore, in the above technical solution, the speaker unit is located in the housing near the through hole, and the sound output surface of the speaker unit points to the through hole.
[0009] Furthermore, in the above technical solution, an annular groove is formed on the front surface along the periphery of the through hole, and a slider cooperating with the annular groove is provided on the inner side surface of the connecting part, and the slider can be rotatably embedded in the annular groove.
[0010] Furthermore, in the above technical solution, the slider is arc-shaped, and a snap-in flange is provided on the outer edge of the slider; and a snap-in groove cooperating with the snap-in flange is formed on the side wall of the annular slide groove.
[0011] Furthermore, in the above technical solution, two sliding blocks are arranged on the inner side surface of the connecting portion, and a notch of the annular slide groove for the sliding blocks to enter is opened on the annular slide groove.
[0012] Furthermore, in the above technical solution, the connecting portion extends along one end of the inner side surface to form a circular boss, a circular groove matching the circular boss is formed on the front surface, and the annular groove is located in the circular groove.
[0013] Furthermore, in the above technical solution, a rubber ring for providing rotation damping is arranged between the inner side surface of the connecting portion and the bottom surface of the circular groove.
[0014] Furthermore, in the above technical solution, a through hole is opened in the center of the sound outlet part, which passes through the front and rear surfaces of the sound outlet part. The sound outlet is made annular through the through hole, and the sound outlet is composed of a plurality of small holes distributed in a ring shape along the through hole.
[0015] Furthermore, in the above technical solution, the connecting portion and the sound outlet portion of the sound outlet are in the shape of two intersecting round cakes, that is, the connecting portion and the sound outlet portion are contracted and narrowed at the joint position.
[0016] Furthermore, in the above technical solution, the sound outlet is provided with a second through hole connected to the sound outlet cavity close to the human skin surface, a sound net is installed at the second through hole, and the sound outlet is composed of small holes distributed on the sound net.
[0017] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:
[0018] First of all, the present invention does not adopt the solution of adjusting the angle between the ear hook and the earphone part by rotation in the prior art, but sets a rotatable sound outlet in the traditional open ear hook earphone, and the sound outlet of the sound outlet is eccentrically arranged relative to the rotation axis of the sound outlet, so that the position of the sound outlet can be adjusted by rotating the sound outlet. In this way, when using the present invention, the user only needs to rotate the sound outlet according to the usage scenario or needs to adjust the position of the sound outlet, such as: the sound outlet is close to the ear canal, the sound outlet is far away from the ear canal, etc., to meet different needs.
[0019] Secondly, when using traditional open-type earphones, the front surface of the earphone is close to the skin on the ear, which results in poor air circulation in front and back of the earphone and a lack of transparency, which makes the user feel uncomfortable when worn for a long time. In the present invention, the sound outlet is independently arranged on the front surface of the earphone. When in use, human skin generally only contacts the surface of the sound outlet. There is a large gap between the front surface of the earphone and the human skin, which improves the wearing comfort of the product.
[0020] Finally, the sound outlet portion of the sound outlet mouth of the present invention adopts a hollow design, that is, a through hole running through the front and back is opened on the sound outlet portion, the through hole further improves the air flow, and at the same time a ring-shaped sound outlet cavity is formed inside the sound outlet portion, so that the sound emitted from the sound outlet produces a surround effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 is a three-dimensional diagram of the first embodiment of the present invention;
[0022] Figure 2 is a stereogram of another viewing angle of the first embodiment of the present invention;
[0023] Figure 3 It is an exploded perspective view of the first embodiment of the present invention;
[0024] Figure 4 is a three-dimensional diagram of the sound outlet in the first embodiment of the present invention;
[0025] Figure 5 is a cross-sectional view of the internal structure of the first embodiment of the present invention;
[0026] Figure 6 is a three-dimensional diagram of another embodiment of the sound outlet in the first embodiment of the present invention;
[0027] Figure 7 This is a schematic diagram of the rotation of the sound outlet mouthpiece in the first embodiment of the invention;
[0028] Figure 8 This is a schematic diagram of the use status of the first embodiment of the present invention;
[0029] Fig. 9 is a stereogram of a second embodiment of the present invention;
[0030] Fig.10 It is a three-dimensional exploded view of the sound outlet in the second embodiment of the present invention. DETAILED DESCRIPTION
[0031] The present invention is further described below in conjunction with specific embodiments and drawings.
[0032] The present invention relates to an open earhook headset, in particular to an earhook headset with adjustable sound outlet position. Figures 1 to 5 As shown, the first embodiment of the present invention comprises: an earphone part 1 and an ear hook part 2.
[0033] The earphone part 1 is generally in the shape of an oblong or ellipse, and the overall shape of the ear hook part 2 corresponds to the shape of the human auricle. The ear hook part 2 is fixedly connected to one end of the earphone part 1. One end of the ear hook part 2 is fixedly connected to the earphone part 1, and the earphone part 1 has a front surface 100 close to the human skin when worn. A through hole 11 is opened on the end of the front surface 100 away from the connection position of the ear hook part 2 and the earphone part 1, and a sound outlet 3 is rotatably installed at the position where the through hole 11 is located.
[0034] Combination Figure 5 As shown, the earphone part 1 comprises: a housing 10 and a speaker unit 4, a battery unit 5, and other audio circuit components disposed in the housing 10. The housing 10 is generally composed of an upper cover 101 and a lower cover 102 that are buckled together to form an internal hollow cavity, and the speaker unit 4, the battery unit 5, and other audio circuit components are disposed in the cavity of the housing 10.
[0035] The speaker unit 4 is located in the cavity of the housing 10 near the through hole 11, and the sound output surface of the speaker unit 4 points to the through hole 11. Figure 5 As shown, under normal circumstances, the upper cavity of the speaker unit 4 serves as the front sound cavity, and the lower cavity serves as the rear sound cavity. Since the sound outlet 3 is added in the present invention, the cavity inside the sound outlet 3 can serve as the front sound cavity, so the speaker unit 4 in the present invention can be closer to the inner wall of the upper cover 101, thereby further reducing the thickness of the housing 10 and making the earphone part 1 thinner.
[0036] The battery unit 5 is located on the opposite side of the speaker unit 4, and the ear hook part 2 is connected to the earphone part 1 from this side.
[0037] The sound outlet 3 includes: an integrally formed connection part 31 and a sound outlet part 32. A connected sound outlet cavity 30 is formed in the connection part 31 and the sound outlet part 32. Combined with the above, the sound outlet cavity 30 in the sound outlet 3 can be used as the front sound cavity of the earphone. The connection part 31 can be rotatably mounted on the front surface 100 of the earphone part 1. The sound outlet part 32 is provided with a sound outlet 320 connected with the sound outlet cavity 30. The sound generated by the speaker unit 4 enters the sound outlet cavity 30 through the through hole 11 and is conducted out from the sound outlet 320.
[0038] The connection portion 31 and the sound outlet portion 32 of the sound outlet 3 of the present invention are eccentrically arranged, that is, the position of the sound outlet 320 is eccentrically distributed relative to the rotation axis of the connection portion 31 and the earphone portion 1. When the sound outlet 3 rotates relative to the earphone portion 1, the sound outlet 320 rotates synchronously around the rotation axis, so that the position of the sound outlet 320 relative to the earphone portion 1 changes.
[0039] Combination Figure 3 As shown, the connection part 31 and the sound outlet part 32 of the sound outlet 3 are in the shape of two intersecting round cakes, that is, the connection part 31 and the sound outlet part 32 are contracted and narrowed at the joint position 33. At the same time, a through hole 321 is provided in the center of the sound outlet 32, which passes through the front and rear surfaces of the sound outlet 32. The sound outlet 320 is provided on the front surface of the sound outlet 32 close to the human skin surface, and is composed of a plurality of small holes distributed in a ring shape along the through hole 321. This design is adopted in order to better optimize the sound cavity design. Figure 5 As shown, the sound outlet cavity 30 in the sound outlet portion 32 forms an annular sound cavity 300. When the sound generated by the speaker unit 4 enters the sound outlet cavity 30 of the connecting portion 31 through the through hole 11, it is narrowed by the joint position 33 and then enters the annular sound cavity 300, and finally the sound emitted by the sound outlet 320 produces a surround effect, with a more three-dimensional effect.
[0040] In the present invention, the connection between the sound outlet 3 and the earphone part 1 is in the following manner. An annular groove 12 is formed on the front surface 100 of the earphone part 1 along the periphery of the through hole 11. A slider 312 cooperating with the annular groove 12 is provided on the inner side surface 310 of the connecting part 31 of the sound outlet 3, and the slider 312 can be rotatably embedded in the annular groove 12. Specifically, the slider 312 is arc-shaped, and a buckle flange 3120 is provided on the outer edge of the slider 312; and a buckle groove 120 cooperating with the buckle flange 3120 is formed on the side wall of the annular groove 12.
[0041] In order to facilitate installation, a notch 121 of the annular slide groove 12 is provided on the annular slide groove 12 for the slider 312 to enter. The size of the notch 121 is interference fit with the slider 312, or a wedge-shaped block structure is provided at the slider 312 and the notch 121, so that after the slider 312 enters the notch 121, it will be difficult for the slider 312 to escape from the notch 121. In addition, the position of the notch 121 should be completely deviated from the angle of normal use of the sound outlet 3, so that when the sound outlet 3 is installed on the earphone part 1, the user will not rotate the sound outlet to the position corresponding to the slider 312 and the notch 121 under normal circumstances, avoiding the accidental separation of the sound outlet 3 from the earphone part 1.
[0042] In order to ensure the stability of the rotation, two sliding blocks 312 are disposed on the inner side surface 310 of the connecting portion 31 .
[0043] In addition, in order to ensure the rotation stability, the connecting part 31 extends along one end of the inner side surface 310 to form a circular boss 311, and the front surface 100 is formed with a circular groove 13 that cooperates with the circular boss 311. The annular groove 12 is located in the circular groove 13 and is concentrically arranged. When the sound outlet 3 rotates, the circular boss 311 rotates in the circular groove 13. The cooperation between the circular boss 311 and the circular groove 13 ensures the stability of the rotating structure. Due to the presence of the circular boss 311, a step is formed between the connecting part 31 and the inner surface of the sound outlet 32. The sound outlet 32 uses the step to form a certain gap with the front surface 100 of the earphone part 1. This gap can ensure that the sound outlet 3 will not interfere with each other during the rotation process. At the same time, the gap can be connected to the external space through the through hole 321 to ensure the flow of airflow and improve the comfort of the user wearing the present invention.
[0044] At the same time, a rubber ring 34 for providing rotational damping is arranged between the inner side surface 310 of the connecting portion 31 and the bottom surface of the circular groove 13. Through the friction damping generated by the rubber ring 34, the sound outlet 3 can stay stably at any angle, thereby finally realizing the stable adjustment of the sound outlet position.
[0045] The rubber ring 34 can be set in the annular groove opened on the bottom surface of the circular groove 13. The thickness of the rubber ring 34 should be higher than the depth of the annular groove. After the sound outlet 3 is installed in the earphone part 1, the inner side surface 310 of the connecting part 31 forms an extrusion pressure on the rubber ring 34 to generate sufficient friction damping.
[0046] When this embodiment is used, see Figure 8As shown in FIG. 1 , this is a diagram of the left earphone in use of the present invention. The ear hook 2 of the earphone is hung on the back of the auricle 6 of the human body. The connection position between the earphone 1 and the ear hook 2 is located in the front, and the position of the through hole 11 is located in the back, that is, the connection position between the earphone 1 and the ear hook 2 is far away from the auricle 6, and the position of the through hole 11 is close to the auricle 6. The sound outlet 32 in the sound outlet 3 is deflected to the front near the ear canal. Figure 7 As shown, in a normal state, the sound outlet 32 is approximately horizontally distributed with the connecting portion 31, and the sound outlet 320 on the sound outlet 32 corresponds to the upper part of the concha cavity of the human ear. In this case, the user can listen to the sound emitted by the earphone normally and can also clearly receive the external ambient sound.
[0047] When the external environment is noisy, or the user wants to immersively enjoy the headphone audio, the sound outlet 3 can be rotated downward by a certain angle (30°-40°), and the sound outlet 320 on the sound outlet portion 32 is located at the position of the concha cavity of the ear near the ear canal. In this case, the sound emitted by the sound outlet 320 will directly enter the ear canal, and the present invention has the effect of a semi-in-ear headphone, allowing the user to concentrate on enjoying the audio of the headphone, and the interference of the external environment sound is reduced.
[0048] When the user needs to receive external ambient sound at all times, for example, when working, the user wants the sound emitted by the earphone to be the background sound of the work, the sound outlet 3 can be rotated upward by a certain angle (30°-40°), and the sound outlet 320 on the sound outlet portion 32 will be away from the concha cavity. In this case, the sound emitted by the sound outlet 320 is far away from the ear canal, so that the user can receive external ambient sound at all times.
[0049] See Figure 6 As shown, this is another implementation scheme of Example 1 of the present invention. In this implementation scheme, considering that the front surface of the sound outlet 32 is close to human skin during use of the earphone, the sound outlet 320 is directly opened on the front surface of the sound outlet 32. During use, if the sound is loud, the sound may vibrate on the skin surface in contact with it after being transmitted from the sound outlet 320, which may cause discomfort to the user. Therefore, in this implementation scheme, the sound outlet 320 is not directly opened on the front surface of the sound outlet 32, but is opened along the inner wall of the through hole 321, or is opened on the chamfered arc surface of the through hole 321. During use of the earphone, the sound outlet 320 will not contact the user's skin, avoiding discomfort that may be caused by sound vibration.
[0050] See Fig. 9 , Fig.10As shown, this is the second embodiment of the present invention. The second embodiment simplifies the design of the sound outlet 3 based on the first embodiment. The connection structure between the sound outlet 3 and the earphone part 1 in the second embodiment is the same as that in the first embodiment, except that the sound outlet 3 of the second embodiment is roughly elliptical or oblong, and the sound outlet 32 is provided with a second through hole 322 connected to the sound outlet cavity 30 close to the surface of the human skin, and a sound net 323 is installed at the second through hole 322, and the sound outlet 320 is composed of small holes distributed on the sound net 323.
[0051] In summary, the present invention provides a rotatable sound outlet 3 in a traditional open earhook earphone, and the sound outlet 320 of the sound outlet 3 is eccentrically arranged relative to the rotation axis of the sound outlet 3, so that the position of the sound outlet 320 can be adjusted by rotating the sound outlet 3. In this way, when using the present invention, the user only needs to rotate the sound outlet 3 according to the usage scenario or needs to adjust the position of the sound outlet 320 to meet different needs.
[0052] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. All equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.
Claims
1. An ear-hook headset with adjustable sound outlet position, comprising: An earphone part (1) and an ear hook part (2), wherein one end of the ear hook part (2) is fixedly connected to the earphone part (1), and the earphone part (1) has a front surface (100) that is close to human skin when worn. The earphone part (1) comprises: a housing (10) and a speaker unit (4) arranged in the housing (10), characterized in that: A through hole (11) is provided on one end of the front surface (100) away from the connection position between the ear hook portion (2) and the earphone portion (1), and a sound outlet (3) is rotatably mounted at the position where the through hole (11) is located; The sound outlet (3) comprises: an integrally formed connection portion (31) and a sound outlet portion (32); a connected sound outlet cavity (30) is formed in the connection portion (31) and the sound outlet portion (32); the connection portion (31) is rotatably mounted on the front surface (100) of the earphone portion (1); a sound outlet (320) connected to the sound outlet cavity (30) is formed on the sound outlet portion (32); the sound generated by the speaker unit (4) enters the sound outlet cavity (30) through the through hole (11) and is conducted out through the sound outlet (320); A through hole (321) is provided at the center of the sound output portion (32) and passes through the front and rear surfaces of the sound output portion (32). The through hole (321) makes the sound output cavity (30) in the sound output portion (32) annular. The sound outlet (320) is provided on the front surface of the sound output portion (32) close to the surface of human skin and is composed of a plurality of small holes distributed in an annular manner along the through hole (321). The connection portion (31) and the sound outlet portion (32) of the sound outlet (3) are eccentrically arranged, that is, the position of the sound outlet (320) is eccentrically distributed relative to the rotation axis of the connection portion (31) and the earphone portion (1); when the sound outlet (3) rotates relative to the earphone portion (1), the sound outlet (320) rotates synchronously around the rotation axis, causing the position of the sound outlet (320) relative to the earphone portion (1) to change; When the ear-hook earphone is worn, the ear-hook portion (2) is hung on the rear side of the human auricle (6), the connection position between the earphone portion (1) and the ear-hook portion (2) is away from the auricle (6), and the sound outlet portion (32) in the sound outlet (3) is deflected forward to a position close to the ear canal, and the deflected state includes at least: State 1: the sound outlet (32) is located horizontally with the connecting portion (31), and the sound outlet (320) on the sound outlet (32) corresponds to the upper part of the concha cavity of the human ear; State 2: Based on state 1, the sound outlet (3) is rotated downward, and the sound outlet (320) on the sound outlet portion (32) is located at the concha cavity of the ear near the ear canal.
2. The ear-hook earphone with adjustable sound outlet position according to claim 1, characterized in that: The loudspeaker unit (4) is located in the housing (10) at a position adjacent to the through hole (11), and the sound output surface of the loudspeaker unit (4) points toward the through hole (11).
3. The ear-hook earphone with adjustable sound outlet position according to claim 1, characterized in that: An annular slide groove (12) is formed on the front surface (100) along the periphery of the through hole (11), and a slider (312) cooperating with the annular slide groove (12) is provided on the inner side surface (310) of the connecting portion (31), and the slider (312) can be rotatably embedded in the annular slide groove (12).
4. The ear-hook earphone with adjustable sound outlet position according to claim 3, characterized in that: The slider (312) is arc-shaped, and a snap-fit flange (3120) is provided on the outer edge of the slider (312); a snap-fit groove (120) that cooperates with the snap-fit flange (3120) is formed on the side wall of the annular slide groove (12).
5. The ear-hook earphone with adjustable sound outlet position according to claim 4, characterized in that: Two sliding blocks (312) are arranged on the inner side surface (310) of the connecting portion (31), and a notch (121) of the annular sliding groove (12) for the sliding blocks (312) to enter is provided on the annular sliding groove (12).
6. The ear-hook earphone with adjustable sound outlet position according to claim 3, characterized in that: The connecting portion (31) extends along one end of the inner side surface (310) to form a circular boss (311), a circular groove (13) matching the circular boss (311) is formed on the front surface (100), and the annular slide groove (12) is located in the circular groove (13).
7. The ear-hook earphone with adjustable sound outlet position according to claim 6, characterized in that: A rubber ring (34) for providing rotation damping is arranged between the inner side surface (310) of the connecting portion (31) and the bottom surface of the circular groove (13).
8. The ear-hook earphone with adjustable sound outlet position according to claim 1, characterized in that: The connecting portion (31) and the sound outlet portion (32) of the sound outlet (3) are in the shape of two intersecting round cakes, that is, the connecting portion (31) and the sound outlet portion (32) are contracted and narrowed at a joining position (33).
Citation Information
Patent Citations
Angle-adjustable ear-hook type earphone
CN219893423U
Multi-directional adjustable ear-hook type earphone
CN220653518U
Ear hanging type earphone
CN219893424U