Ear cap and open earphone

Abstract

The utility model discloses an ear cap and an open earphone, the open earphone comprises a shell and a sound outlet nozzle, the ear cap is used for sleeving the sound outlet nozzle, the sound outlet nozzle can telescopically move relative to the shell, and the shell is provided with a mounting port; the ear cap comprises a guide part and a sealing part; the guide part is provided with a connecting structure, the guide part is detachably connected with the sound outlet nozzle through the connecting structure, the guide part is arranged at the mounting port, and the guide part can be driven by the sound outlet nozzle to telescopically move relative to the shell along the mounting port; the sealing part is connected with the guide part, and the sealing part is provided with a sound production hole communicated with the sound outlet hole. The ear cap provided by the technical scheme of the utility model can meet the wearing requirement of switching the earphone between different wearing states of an open type and an in-ear type.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of acoustic devices, in particular to an ear cap and an open earphone. BACKGROUND

[0002] Nowadays, earphones play an important role in people's life. Through earphones, people can listen to each other in a learning scenario, communicate with each other in a meeting and office scenario, and listen to music in a private scenario or a sports scenario. An open earphone does not completely isolate external sounds when in use, and the wearer can hear the sounds of the surrounding environment, such as the sound of a car driving and the calling sound of others. This feature is very important when outdoor sports (such as running and cycling) or walking on the street, which can effectively avoid accidents caused by not hearing external sounds and improve personal safety when in use. An in-ear earphone can better isolate external noise because it directly enters the ear canal, so it has an advantage in the detail restoration and low-frequency performance of sound quality.

[0003] In real life, people often switch between different life scenarios, so there is a high demand for dual-mode earphones that have the advantages of both open earphones and in-ear earphones. However, current earphones generally only have one wearing state, for example, open earphones only have an open wearing state, so the ear cap on the current earphone cannot meet the wearing needs of earphones that can switch between open and in-ear modes. CONTENT OF THE INVENTION

[0004] The present application provides an ear cap, which aims to meet the wearing needs of earphones switching between open and in-ear wearing states.

[0005] The present application provides an ear cap, which is applied to an open earphone, wherein the open earphone comprises a shell and a sound outlet, the ear cap is used for sleeving outside the sound outlet, the sound outlet is telescopically movable relative to the shell, and the shell has a mounting port; the ear cap comprises a guide part and a sealing part; the guide part is provided with a connecting structure, the guide part is detachably connected with the sound outlet through the connecting structure, the guide part is arranged at the mounting port, and the guide part can be telescopically moved along the mounting port relative to the shell under the driving of the sound outlet; the sealing part is connected with the guide part, and the sealing part is provided with a sound hole communicating with the sound hole.

[0006] The ear cap based on the embodiment of the application is applied to an open earphone. The open earphone can be telescopically moved relative to a shell through a sound outlet. The open earphone has switching effects of open use and in-ear use. The ear cap is sleeved outside the sound outlet. The ear cap comprises a guide part and a sealing part connected with each other. The guide part can be telescopically moved relative to the shell of the open earphone under the driving of the sound outlet. In actual use, the ear cap can be matched with the shell of the open earphone through the guide part, so that the sealing part can be separated from or inserted into an ear canal opening, to meet the wearing requirements of the open earphone in switching between open wearing and in-ear wearing. For example, when the user adjusts the open earphone to open wearing, the ear cap can be retracted relative to the shell, to increase the distance between the sound hole on the sealing part and the ear canal opening of the user. When the user adjusts the open earphone to in-ear wearing, the sealing part can be inserted into the ear canal opening, to obtain an immersive in-ear listening experience.

[0007] In addition, the ear cap is detachably connected with the sound outlet. Therefore, during the switching of the open earphone between open use and in-ear use, the ear cap can be detached, to be replaced with an ear cap corresponding to the size of the ear of the user, so that the ear cap is more matched with open use and in-ear use. For example, when the distance between the sound hole on the sealing part of the ear cap and the ear canal opening of the user is too large, the sound leakage is serious, so that the user feels that the volume of the open earphone in open wearing is too small. When the user feels that the ear cap is not reasonable in the ear canal opening and is uncomfortable, or when different users have different habits of the ear cap being more fitted or more loose in the ear canal opening, the user can detach the ear cap, to replace the ear cap that can meet the requirements of the user. BRIEF DESCRIPTION OF DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the drawings shown.

[0009] Figure 1 FIG. 1 is a structural schematic diagram of an open earphone in an embodiment of the present application. The sound outlet is in an extended state.

[0010] Figure 2 FIG. 2 is a structural schematic diagram of the open earphone in FIG. 1. The sound outlet is in a retracted state. Figure 1

[0011] Figure 3 FIG. 3 is a structural schematic diagram of another embodiment of the ear cap of the present application.

[0012] Figure 4 FIG. 4 is a structural schematic diagram of the ear cap in FIG. 3.​Figure 3 A schematic diagram of the cross-sectional structure of the ear cap along section AA;

[0013] Figure 5 for Figure 2 An exploded view of the open-back headphones;

[0014] Figure 6 for Figure 5 A schematic diagram showing the exploded structure of the shell and sound outlet of an open-back headphone.

[0015] Figure 7 for Figure 5 A three-dimensional structural diagram of the adjustment mechanism in an open-back headphone;

[0016] Figure 8 for Figure 5 A schematic diagram of the adjustment mechanism on the housing of an open-back headphone, showing part of the housing structure.

[0017] Figure 9 for Figure 8 A schematic diagram of the structure after removing the shell;

[0018] Figure 10 for Figure 8 A partial cross-sectional view of an open-back headphone with the sound outlet in a retracted position;

[0019] Figure 11 for Figure 8 A partial cross-sectional view of an open-back headphone with the sound outlet in an extended position.

[0020] Explanation of icon numbers:

[0021] 1. Open-back headphones; 10. Sound-producing part; 101. Cavity; 11. Shell; 111. Shaft hole; 112. Slot; 113. Mounting shaft; 12. Sound outlet; 121. Sound outlet hole; 122. Clip groove; 14. Guide structure; 141. Guide groove; 142. Guide block; 15. Adjustment mechanism; 151. Adjustment component; 152. Adjustment knob; 153. Drive shaft; 154. Transmission structure; 1541. Gear structure; 1542. First bevel gear; 1543. Second bevel gear; 1544. Rack; 1545. First tooth; 1546. Second tooth; 16. Limiting structure; 161. First limiting part; 162. Second limiting part; 17. Bracket; 18. Sealing ring; 20. Wearing part; 30. Ear hook; 40. Battery compartment;

[0022] 2. Ear cap; 210. Guide part; 211. Buckle; 220. Sealing part; 221. Sound hole; 230. Sealing skirt.

[0023] The object, technical solutions, and advantages of the present application will be further described in detail with reference to the drawings. DETAILED DESCRIPTION

[0024] To make the object, technical solutions, and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0025] Earphones play an important role in people's lives today. Through earphones, people can listen and interact in learning scenarios, communicate with each other in meeting and office scenarios, and listen to music in solitude and sports scenarios. Open earphones do not completely isolate external sounds when in use, and the wearer can hear the sounds of the surrounding environment, such as the sound of a car driving and the calling of others. This feature is very important when outdoors (such as running or cycling) or walking on the street, as it can effectively prevent accidents caused by not hearing external sounds and improve personal safety when in use. Since in-ear earphones directly enter the ear canal, they can better isolate external noise and make the sound more directly into the ear, so they have an advantage in the detail restoration and low-frequency performance of sound quality.

[0026] In real life, people often switch between different life scenarios, so there is a high demand for dual-mode earphones that have the advantages of both open earphones and in-ear earphones. However, current earphones generally only have one wearing state, such as open earphones only having an open wearing state, so the ear caps on current earphones cannot meet the wearing needs of earphones that can switch between open and in-ear modes.

[0027] To solve the above problems, please refer to Figures 1 to 5 The present application proposes an open earphone 1, which, in the embodiments of the present application, includes an earphone body and an ear cap 2, wherein the earphone body includes a sound producing part 10 and a wearing part 20 connected together, the sound producing part 10 is used to produce a sound signal, and the wearing part 20 can cooperate with the sound producing part 10 to enable the open earphone 1 to be worn on the ear of a user.

[0028] The sound producing part 10 includes a shell 11 and a sound outlet 12, the ear cap 2 is sleeved on the sound outlet 12, the shell 11 is connected with the wearing part 20, the sound outlet 12 is provided with a sound outlet hole 121, and the sound outlet 12 is movably extended and retracted relative to the shell 11, so that the distance between the sound outlet hole 121 and the ear canal opening of the user can be adjusted when the open earphone 1 is worn. It should be noted that the sound outlet 12 is movably extended and retracted relative to the shell 11 and has an extended state and a retracted state. When the sound outlet 12 is in the retracted state, the sound outlet hole 121 is spaced apart from the ear canal opening of the user. When the sound outlet 12 is in the extended state, the sound outlet hole 121 can or can not be spaced apart from the ear canal opening of the user, which will be described in detail below.

[0029] In the wearing state, the sound production part 10 is located in the concha cavity or partially located in the concha cavity, and the wearing part 20 is located on the back of the auricle, such as the back of the helix or the back of the antitragus. The sound production part 10 and the wearing part 20 cooperate to hold the open earphone 1 to be stably worn on the user's ear.

[0030] It can be understood that the sound production part 10 further comprises a loudspeaker assembly arranged in the shell 11. The loudspeaker assembly is a core component for generating sound, which converts electrical signals into sound signals. The loudspeaker assembly can adopt, for example, a moving coil loudspeaker, an electrostatic loudspeaker, etc. The sound generated by the loudspeaker assembly is propagated to the outside through the sound outlet hole 121. The open earphone 1 of the present application is an air conduction type earphone, that is, the sound generated by the loudspeaker assembly is propagated through the air and enters the user's ear canal.

[0031] In addition, referring again to Figures 2 to 5 The open earphone 1 of the present application is further provided with a battery and an electronic control board (not marked in the figure). The battery and the electronic control board can be arranged together with the loudspeaker assembly in the sound production part 10. Of course, other arrangements are also possible, for example, the control circuit board and the loudspeaker assembly are located together in the sound production part 10, and the battery is located in the wearing part 20. Alternatively, the battery and the electronic control board are located in the wearing part 20, and the loudspeaker assembly is located in the sound production part 10. Still alternatively, the loudspeaker assembly and the main control board are located in the sound production part 10, and the battery is located in the wearing part 20. These arrangements are all feasible. The battery can adopt a rechargeable lithium battery form or a disposable dry battery form, which is not limited by the present application.

[0032] The shell 11 can protect the loudspeaker assembly, that is, the loudspeaker assembly can be fixedly arranged inside the shell 11, that is, the loudspeaker assembly is arranged in the shell 11 and divides the shell 11 into a front cavity and a rear cavity, and the sound outlet hole 121 communicates with the front cavity. During the telescopic movement of the sound outlet nozzle 12, the position of the loudspeaker assembly in the shell 11 does not change. On this basis, the shell 11 can be a slot structure with an opening, and the sound outlet nozzle 12 covers the opening of the shell 11. The sound emitted by the loudspeaker assembly is propagated to the outside through the opening and the sound outlet hole 121 on the sound outlet nozzle 12. The sound outlet hole 121 on the sound outlet nozzle 12 is in the form of an array of multiple micro-holes. Of course, the shell 11 can also be a relatively closed cavity structure without an opening. The shell 11 is provided with a sound outlet hole corresponding to the sound outlet hole 121. The sound outlet hole is also in the form of an array of multiple micro-holes. The sound emitted by the loudspeaker assembly is propagated to the outside through the sound outlet hole and the sound outlet hole 121 on the sound outlet nozzle 12.

[0033] Based on the open earphone 1 of the embodiment of the present application, the sound outlet nozzle 12 is movably connected with the shell 11, so that the sound outlet nozzle 12 can be moved telescopically relative to the shell 11, thereby adjusting the distance between the sound outlet hole 121 and the ear canal opening of the user. Therefore, in actual use, when the distance between the sound outlet hole 121 on the sound outlet nozzle 12 and the ear canal opening of the user is too large, causing serious sound leakage, so that the user feels that the volume of the open earphone 1 is too small, the sound outlet nozzle 12 can be lengthened to shorten the distance between the sound outlet hole 121 and the ear canal opening, so as to reduce sound leakage and increase the volume. When the user feels that the ear canal opening area where the sound outlet nozzle 12 is located is unreasonable, causing discomfort, the sound outlet nozzle 12 can also be retracted to increase the distance between the sound outlet nozzle 12 and the ear canal opening, thereby achieving the switching effect of open use and in-ear use.

[0034] Further, please refer to Figures 2 to 6 The shell 11 has a mounting opening, the sound outlet nozzle 12 is arranged in the mounting opening and can move telescopically relative to the shell 11, the ear cap 2 includes a guide portion 210 and a sealing portion 220, the guide portion 210 is provided with a connecting structure, the guide portion 210 is detachably connected with the sound outlet nozzle 12 through the connecting structure, the ear cap 2 is used for sleeving outside the sound outlet nozzle 12, the guide portion 210 is arranged at the mounting opening, the sealing portion 220 is connected with the guide portion 210, and the sealing portion 220 is provided with a sound generating hole 221 which communicates with the sound outlet hole 121. The guide portion 210 can move telescopically along the mounting opening relative to the shell 11 under the driving of the sound outlet nozzle 12, thereby enabling the ear cap 2 to move under the driving of the sound outlet nozzle 12.

[0035] It can be understood that the guide portion 210 can move telescopically relative to the shell 11 of the open earphone 1 under the driving of the sound outlet nozzle 12, in actual use, the user can cooperate the guide portion 210 with the shell 11, so that the sealing portion 220 can be separated from or inserted into the ear canal opening, to meet the wearing demand of switching the open earphone 1 between the open type and the in-ear type. For example, when the user adjusts the open earphone 1 to be worn in an open type, the ear cap 2 can be retracted relative to the shell 11 to increase the distance between the sound generating hole 221 on the sealing portion 220 and the ear canal opening of the user, and when the user adjusts the open earphone 1 to be worn in an in-ear type, the sealing portion 220 can be inserted into the ear canal opening, thereby obtaining an immersive in-ear listening experience.

[0036] In a specific embodiment, please refer to Figures 3 to 5, the ear cap 2 is in a long tube shape, and the ear cap 2 further comprises a sealing skirt 230 connected to the outer wall of the sealing part 220 and arranged around the sealing part 220. The sealing skirt 230 is arranged at the end of the sealing part 220 away from the guide part 210, and contacts the ear canal of the user and seals the ear canal opening of the user when worn, thereby avoiding sound leakage and improving the listening effect. The skirt structure of the sealing skirt 230 can better fit the shape of the user's ear canal, especially the curve at the ear canal opening, forming a tighter sealing effect. In addition, the open part of the skirt structure of the sealing skirt 230 can increase the contact area with the ear canal, thereby improving the stability of the ear cap and preventing the earphone from falling off during movement or activity. The ear cap can adapt to the shape and size of the ear canal of different users and provide a more personalized wearing experience.

[0037] In another embodiment, in the axial direction of the mounting port, the length of the sealing part 220 is greater than the length of the guide part 210, that is, the guide part 210 and the sealing part 220 are formed in a long tube structure in the axial direction of the mounting port. The length of the sealing part 220 extends longer in the axial direction, so that it can enter the user's ear canal more deeply when worn, thereby providing better sealing effect for users with larger ear parts and meeting the user's use requirements. The longer tube structure ensures the integrity of the ear cap 2, and the internal space of the tube structure can better guide the sound from the sound outlet hole to the ear canal, reduce the scattering and loss of sound, ensure the listening quality, and improve the user's use experience.

[0038] The guide part 210 and the sealing part 220 can be an integral structure and are made of flexible material, that is, the entire ear cap 2 is made of flexible material, for example, silicone material. Of course, the sealing part 220 in close contact with the user's ear canal can be made of flexible material, and the guide part 210 can be made of relatively hard material to improve the structural stability of the guide part 210 when it is stretched and moved relative to the shell 11 along the mounting port. Thus, in combination with the structure that the sound outlet nozzle 12 can be stretched and moved relative to the shell 11, when the user switches between open use and in-ear use of the open earphone 1 of the present application, the ear cap 2 can be disassembled and replaced with an ear cap 2 corresponding to the size of the user's ear part, so that the ear cap 2 is more suitable for open use and in-ear use.

[0039] Specifically, in the process of switching the user between open and in-ear use of the open earphone 1, the ear cap 2 can also be disassembled to fit the ear cap 2 corresponding to the size of the user's own ear, so that the ear cap 2 is more matched to the open state and the in-ear state. For example, when the sound outlet hole on the sealing part 220 of the ear cap 2 is too far from the user's ear canal, causing serious leakage, so that the user feels that the volume of the earphone in the open wearing state is too small; or when the user feels that the ear cap 2 is not reasonable in the ear canal area, causing discomfort, or even different users have the habit of ear cap 2 and ear canal. The larger spacing between the cap 2 and the ear canal, and many other needs, the user can disassemble the ear cap 2 to replace the ear cap 2 that meets his different needs. Therefore, the ear cap 2 of the present application can better meet the wearing needs of the earphone between open and in-ear different wearing states.

[0040] Further, when the distance from the sound outlet hole 121 to the ear canal is shortened by extending the sound nozzle 12, if the sound nozzle 12 has reached the extension limit and the leakage phenomenon is still serious, the ear cap 2 can be disassembled to replace the ear cap 2 with a larger size, which can achieve a more tight seal of the ear canal, more effectively isolate external noise, achieve a higher noise reduction effect, and improve the listening experience; when the distance from the sound nozzle 12 to the ear canal is increased by retracting the sound nozzle 12, if the user still feels that the sound nozzle 12 is not reasonable in the ear canal area, causing discomfort, the ear cap 2 can also be disassembled to replace the ear cap 2 with a smaller size, to increase the distance between the ear cap 2 and the ear canal, improve the adaptability of the open earphone 1, and provide the user with a more comfortable use experience. The above settings enable the open earphone 1 of the present application to achieve good listening effect, thereby meeting the use needs of different users.

[0041] In addition, the detachable connection of the ear cap 2 and the sound nozzle 12 also makes the ear cap 2 easy to disassemble and clean or replace, especially for users who often sweat or use in humid environments, this design can help them maintain the sanitary state of the ear cap 2. And the detachable connection of the ear cap 2 and the sound nozzle 12 makes it easy for users to replace ear caps 2 of various sizes or types. Users can choose the appropriate ear cap 2 according to their preferences or ear size, improve the wearing comfort, and also facilitate users to replace the ear cap 2 according to different use scenarios.

[0042] In a design where the sound outlet 12 is a cover with an opening on one side, and the sound outlet 12 and the housing 11 are in a slidable sleeve structure, the housing 11 is an open groove structure, and the sound outlet 12 can be nested inside the housing 11, or it can be sleeved on the outside of the housing 11. When the housing 11 is a relatively closed cavity structure, the sound outlet 12 can be sleeved on the outside of the housing 11. In a slidable sleeve connection between the housing 11 and the sound outlet 12, the speaker assembly can also be mounted on the sound outlet 12. In this configuration, during the extension and retraction of the sound outlet 12, the speaker assembly moves relative to the housing 11.

[0043] In other embodiments, in order to enable the sound outlet 12 to extend and retract relative to the housing 11, the two can be connected by a telescopic component. For example, the sound outlet 12 can be connected to the housing 11 by a bellows structure. In this way, the extension and retraction of the sound outlet 12 relative to the housing 11 can be achieved by extending and retracting the bellows structure.

[0044] The sound outlet 12 can be manually driven to extend and retract relative to the housing 11. Alternatively, it can be driven by a drive mechanism.

[0045] To prevent the sound outlet 12 from twisting relative to the housing 11 during the extension and retraction of the sound outlet 12, this application further provides a guide structure 14 between the sound outlet 12 and the housing 11. The guide structure 14 is used to prevent the sound outlet 12 from twisting circumferentially with the housing 11 during the extension and retraction process. Specifically, as follows... Figure 5 and Figure 6 As shown, the guide structure 14 may include a guide groove 141 and a guide block 142. The guide groove 141 may be disposed on the sound outlet 12 or on the housing 11 and extends in the telescopic direction of the sound outlet 12. The guide block 142 slides along the guide groove 141. That is, the positions of the guide groove 141 and the guide block 142 in this application can be interchanged between the sound outlet 12 and the housing 11.

[0046] Specifically, the guide blocks 142 are arranged in plurality and are arranged in interval on the outer wall surface of the sound outlet nozzle 12 and are arranged on the end of the sound outlet nozzle 12 which is far away from the sound outlet hole 121. Correspondingly, the guide grooves 141 are also arranged in plurality and are arranged on the inner wall of the shell 11. The plurality of guide blocks 142 correspond to the plurality of guide grooves 141 one by one and are arranged in slidable manner in the guide grooves 141. Through the arrangement of the plurality of guide blocks 142 and the plurality of guide grooves 141 in slidable manner, the relative torsion between the sound outlet nozzle 12 and the shell 11 is avoided. In the case that the cross-sectional shape of the sound outlet nozzle 12 and the shell 11 is designed in non-circular shape, the interference between the sound outlet nozzle 12 and the shell 11 can be effectively avoided and the deformation of the structure of the sound outlet nozzle 12 can be avoided.

[0047] Of course, in other structural forms, the guide structure 14 can not be arranged and the shape arrangement between the shell 11 and the sound outlet nozzle 12 can be used to achieve. For example, the cross-sectional contour shape of the shell 11 and the sound outlet nozzle 12 can be designed in track type or polygon type. In this way, the flat surfaces which are arranged in slidable manner between the shell 11 and the sound outlet nozzle 12 are arranged. Thus, the torsion of the sound outlet nozzle 12 relative to the shell 11 during the pulling process can be avoided.

[0048] Please refer to Figures 5 to 9 In order to facilitate the user to adjust the sound outlet nozzle 12 so that the sound outlet nozzle 12 can be moved in extension and retraction relative to the shell 11, the open earphone 1 can be further provided with an adjusting mechanism 15 and the sound outlet nozzle 12 is driven to move in extension and retraction relative to the shell 11 through the adjusting mechanism 15. It can be understood that through the arrangement of the adjusting mechanism 15, the user can drive the sound outlet nozzle 12 to move in extension and retraction through the operation of the adjusting mechanism 15 when the open earphone 1 is in the wearing state. In this way, the user can directly determine the adjustment amount of the sound outlet nozzle 12 through the change of the volume during the adjustment process. In this way, the use is more convenient. Of course, the user can also drive the sound outlet nozzle 12 to move in extension and retraction to the appropriate position through the operation of the adjusting mechanism 15 when the open earphone 1 is in the unwearing state and then wear it.

[0049] In an embodiment, the adjusting mechanism 15 can include an adjusting member 151 and a transmission structure 154, the transmission structure 154 being drivingly connected to the adjusting member 151 and the sound outlet 12, the adjusting member 151 being movably connected to the shell 11, and the adjusting member 151 being configured to drive the sound outlet 12 to move telescopically relative to the shell 11 through the transmission structure 154. In this way, the transmission structure 154 changes the mode and direction of movement of the adjusting member 151 during the adjusting process, and finally forms a driving force for driving the sound outlet 12 to move telescopically relative to the shell 11. This arrangement has the advantage that the shape and position of the adjusting member 151 on the shell 11 can be configured in a form that is more conducive to user operation. The transmission structure 154 can be various, such as a screw transmission structure, a gear transmission structure, a sprocket transmission structure, a pulley transmission structure, a lead screw transmission structure, etc., which are not limited in the present application.

[0050] Please refer to Figures 5 to 11 , the transmission structure 154 is a gear transmission structure. The transmission structure 154 includes a gear structure 1541 and a rack 1544, the gear structure 1541 is connected to the drive shaft 153, and the rack 1544 is engaged with the gear structure 1541 and fixedly connected with the sound outlet 12. In this embodiment, the gear transmission structure has the advantages of reliable structure and relatively stable. The gear structure 1541 can include one gear or multiple gears, which are not specifically limited.

[0051] In this embodiment, the adjusting member 151 includes an adjusting knob 152 and a drive shaft 153 connected to the adjusting knob 152, the adjusting knob 152 is exposed to the shell 11, the shell 11 is provided with a shaft hole 111, the drive shaft 153 is rotatably arranged in the shaft hole 111 and drivingly connected to the transmission structure 154; the adjusting knob 152 is configured to drive the sound outlet 12 to move telescopically relative to the shell 11 through the transmission structure 154. Specifically, the user rotates the adjusting knob 152, the adjusting knob 152 drives the transmission structure 154 to work through the drive shaft 153, thereby generating a driving force for driving the sound outlet 12 to move telescopically, and further driving the sound outlet 12 to move telescopically. It can be understood that when the adjusting member 151 is the adjusting knob 152, it has the characteristic of being convenient to operate.

[0052] Further, please refer to Figures 7 to 10 , the gear structure 1541 includes a first bevel gear 1542 and a second bevel gear 1543 engaged with each other, the drive shaft 153 is drivingly connected to the first bevel gear 1542, the shell 11 is provided with a mounting shaft 113, and the second bevel gear 1543 is rotatably arranged on the mounting shaft 113; the second bevel gear 1543 includes a first tooth portion 1545 and a second tooth portion 1546 arranged coaxially, the first tooth portion 1545 is engaged with the first bevel gear 1542, and the second tooth portion 1546 is engaged with the rack 1544.

[0053] The first bevel gear 1542 is fixedly sleeved on the driving shaft 153, the first tooth part 1545 of the second bevel gear 1543 is a bevel gear matched with the first bevel gear 1542, and the second tooth part 1546 is a straight tooth matched with the rack 1544. Thus, through the transmission cooperation of the two bevel gears, the adjusting knob 152 can be arranged on the side of the shell 11 away from the ear of the user in the wearing state of the open earphone 1, and the rotating action of the adjusting knob 152 can be converted into the extension and retraction movement of the sound outlet 12. That is, the user can directly rotate the adjusting knob 152 in the wearing state of the open earphone 1, and then conveniently drive the sound outlet 12 to extend and retract. Such a structure has the advantages of simple structure and fewer parts.

[0054] Further, in the embodiment, the sound generating part 10 is further provided with a limiting structure 16. The limiting structure 16 includes a first limiting part 161 and two second limiting parts 162. The first limiting part 161 is arranged on one of the adjusting knob 152 and the shell 11, and the two second limiting parts 162 are arranged on the other one of the adjusting knob 152 and the shell 11. When the adjusting knob 152 is rotated to the maximum adjustment angle position, the first limiting part 161 selectively limits with one of the two second limiting parts 162.

[0055] The two second limiting parts 162 are respectively arranged at the limit position of the extension of the sound outlet 12 and the limit position of the retraction of the sound outlet 12. Through the cooperation of the first limiting part 161 and the second limiting part 162, a more obvious operation touch feeling can be given in the user operation process, so as to avoid the rotation transition or rotation misplacement in the process of rotating the adjusting knob 152 by the user, thereby improving the convenience of use.

[0056] In summary, the sound outlet 12 is arranged to be capable of extending and retracting relative to the shell 11, and is matched with the adjusting mechanism 15. Different users can adjust the distance between the sound outlet 12 and the ear canal according to their own wearing needs, so as to obtain the best listening effect of the open earphone 1.

[0057] The open earphone 1 of the embodiments of the present application can have multiple wearing modes to adapt to the use requirements of different use scenarios. For example, in an embodiment, when the sound outlet 12 is in the retracted state, the sound outlet hole 121 is spaced from the user's ear canal opening; when the sound outlet 12 is in the extended state, the sound outlet hole 121 is not spaced from the user's ear canal opening. Specifically, the sound outlet 12 is telescopically moved between a first position and a second position relative to the shell 11; when the sound outlet 12 is in the first position, the sound outlet 12 is extended relative to the shell 11, and part of the sound outlet 12 and the sound outlet hole 121 extend into the user's ear canal opening, at which time the sound outlet hole 121 is not spaced from the user's ear canal opening; when the sound outlet 12 is in the second position, the sound outlet 12 is retracted relative to the shell 11, and the sound outlet 12 is located outside the user's ear canal opening and the sound outlet hole 121 is spaced from the ear canal opening. It should be noted that in this embodiment, the first position and the second position both represent the extreme state of the sound outlet 12 during adjustment, and in actual use, the user can also adjust the sound outlet 12 to an intermediate position between the first position and the second position according to their own situation.

[0058] When the sound outlet 12 is in the first position, part of the sound outlet 12 and the sound outlet hole 121 extend into the user's ear canal opening, i.e., into the ear canal, so that the open earphone 1 switches to an in-ear wearing mode, which can effectively isolate external noise, enjoy clear sound quality without high volume, protect hearing, and create a more immersive auditory experience for the user, such as providing excellent bass response and detail resolution to meet the needs of music lovers. When the sound outlet 12 is in the second position, the sound outlet 12 is located outside the user's ear canal opening and the sound outlet hole 121 is spaced from the ear canal opening, so that the open earphone 1 switches to an open wearing mode, which allows external environmental sounds to enter and naturally blend with the sounds played by the open earphone 1, providing a more open and transparent listening experience and reducing the feeling of oppression from long listening. The open earphone 1 of the present application can switch between in-ear wearing mode and open wearing mode, greatly enriching the use scenarios of the open earphone 1 and making the open earphone 1 more convenient to use.

[0059] Of course, the open earphone 1 of the present application can also only have an open wearing mode, and during the telescopic movement of the sound outlet 12, the sound outlet hole 121 is always spaced from the ear canal opening. That is, the sound outlet hole 121 is always spaced from the user's ear canal opening when the sound outlet 12 is in the retracted state and the extended state. During use of the open earphone 1 of the present application, the wearing part 20 can be worn by attaching to the user's ear, and the overall structure is relatively compact and easy to carry.

[0060] It can be understood that the open earphone 1 of the present application can be an ear-hanging earphone. Specifically, the wearing part 20 includes an arc-shaped ear-hanging 30 connected with the shell 11, which is used to hang between the back of the user's ear and the head. Wherein, the ear-hanging 30 is a flexible strip-shaped structure with deformation ability, and is adapted to the contour shape of the ear, so it can adapt to different sizes of ears, without selecting a specific size according to the size of the ear, suitable for most people, and has high universality.

[0061] The wearing part 20 can further include a battery compartment 40 connected to the end of the ear-hanging 30 away from the sound generating part 10. The battery compartment 40 is provided with a battery for powering the loudspeaker assembly, and the battery and the loudspeaker assembly are electrically connected through the lead wire provided in the ear-hanging 30. The main control board in the open earphone 1 can be located in the sound generating part 10 or in the battery compartment 40. Such layout, because the battery compartment 40 is also located between the back of the user's ear and the head during wearing, and the battery compartment 40 has a certain weight, so that the gravity distribution of the whole open earphone 1 on the ear is more balanced, thus the wearing process is more comfortable and stable.

[0062] It can be understood that when the open earphone 1 is an ear-hanging earphone, the wearing part 20 can only include the ear-hanging 30. At this time, the battery and the loudspeaker assembly are located in the shell 11 of the sound generating part 10. Such arrangement can make the wiring between the battery and the loudspeaker assembly shorter. At this time, the size of the ear-hanging 30 can be adjusted accordingly to obtain better wearing comfort and stability.

[0063] In the actual use of the open earphone 1, the size of everyone's ear is different, so the position of the sound generating part 10 contacting the ear may also be slightly different, and the above content also mentions that the open earphone 1 of the present application can be used in an in-ear manner. Therefore, in order to obtain a better wearing experience, the present application can further set the ear-hanging 30 and the shell 11 in a rotating connection. Such arrangement, the user can adjust the posture of the sound generating part 10 by rotating, to change the orientation of the sound outlet 12. On the one hand, after adjusting the extension and movement of the sound outlet 12, the best posture is obtained, so that the sound can better enter the ear canal, on the other hand, by adjusting the posture of the sound generating part 10, the sound outlet 12 can be aligned with the ear canal after extension, and partially enter the ear canal, to realize good sealing contact with the skin of the ear canal, effectively isolating external noise.

[0064] The open earphone 1 of the present application is introduced as an ear-hanging earphone above, however, the open earphone 1 of the present application can also be an ear-clamping earphone. Specifically, when the open earphone 1 of the present application is an ear-clamping earphone, the wearing part 20 includes a connecting bridge and a battery compartment 40, the two ends of the connecting bridge are respectively connected to the shell 11 and the battery compartment 40, and the shell 11 and the battery compartment 40 are oppositely arranged. Among them, the connecting bridge is arranged in an arc shape and is also a flexible structure, and provides a flexible clamping force for the wearing of the entire open earphone 1. Specifically, during wearing, the sound generating part 10 is located on the front side of the ear, while the battery compartment 40 is located between the back side of the ear and the head, and the connecting bridge spans the ear in the front-back direction, and makes the sound generating part 10 and the battery compartment 40 cooperate to clamp the ear. In the case of the open earphone 1 of the present application being an ear-clamping earphone, it can adapt to various ear shapes, and can remain stable even during exercise, and is not easy to fall off, suitable for high-intensity activities such as fitness and running.

[0065] In some embodiments, referring to Figures 8 to 11 , one of the connecting structure of the ear cap 2 and the sound outlet 12 is provided with a buckle 211, and the other of the connecting structure of the ear cap 2 and the sound outlet 12 is provided with a buckle groove 122, the buckle 211 is configured to be matched with the buckle groove 122, specifically, the buckle groove 122 can be formed on the outer wall surface of the sound outlet 12, and the buckle 211 is arranged on the inner wall surface of the ear cap 2, of course, the buckle groove 122 can also be formed on the inner wall surface of the ear cap 2, and the buckle 211 is arranged on the outer wall surface of the sound outlet 12. The ear cap 2 and the sound outlet 12 are detachably connected by the clamping connection mode of the buckle 211 clamped into the buckle groove 122, which reduces the wear caused by traditional screws or other fixing modes, reduces the damage risk caused by repeated disassembly and assembly, thereby prolonging the service life of the open earphone 1. This structure allows the user to quickly install the ear cap 2 on the sound outlet 12 or easily disassemble it, without the need for additional tools, so that the user can quickly disassemble and replace the ear cap 2, greatly improving the convenience of use, and the installation is firm, which can avoid the accidental falling of the ear cap 2 caused by high-intensity activities during wearing, and enhances the overall stability of the earphone. The clamping design also ensures the assembly accuracy of the ear cap 2 and the sound outlet 12 each time, so that the sound hole 221 of the ear cap 2 can accurately align the position of the sound hole 121 of the sound outlet 12 after each replacement, avoiding the sound transmission problem caused by position deviation, and ensuring the consistency of audio quality.

[0066] In other embodiments, the detachable connection of the ear cap 2 and the sound outlet nozzle 12 can also be achieved through a magnetic attraction structure. For example, two magnets are respectively arranged on the ear cap 2 and the sound outlet nozzle 12, and the principle of repelling each other is used to attract each other when they are close, so that the ear cap 2 and the sound outlet nozzle 12 can be tightly connected together when they are close, and can be easily separated when disassembly is needed, greatly simplifying the operation process of the user and improving the convenience of use. The magnetic attraction force can help the sound generating hole 221 of the ear cap 2 to automatically align with the position of the sound outlet hole 121, ensuring that the sound generating hole 221 can be accurately aligned with the sound outlet hole 121 every time it is installed, improving the installation accuracy and ensuring the quality of sound transmission. Through the design of the magnetic attraction structure, the user can easily disassemble and assemble the ear cap 2 without complex operation. The adaptability of the ear cap 2 of different sizes to the user's ear can make the open earphone 1 applicable to users with different sizes of ears and achieve good listening effect, thereby meeting the use needs of different users.

[0067] In some embodiments, the open earphone 1 further comprises a support 17 connected to the guide portion 210 of the ear cap 2 and used for supporting on the ear cap 2 and the sound outlet nozzle 12. In the case that the sound outlet nozzle 12 is in the form of a cover body with an opening on one side, and the sound outlet nozzle 12 and the shell 11 are in the form of a slidable sleeve structure, the shell 11 is a slot body structure with an opening, and the sound outlet nozzle 12 can be nested inside the shell 11. At this time, the ear cap 2 is sleeved on the outer side of the sound outlet nozzle 12, and when the sound outlet nozzle 12 is in the retracted state or in the process of extension movement, the end of the guide portion 210 of the ear cap 2 away from the sound generating hole 221 is located between the inner wall surface of the shell 11 and the outer wall surface of the sound outlet nozzle 12, and the ear cap 2 is respectively abutted between the inner wall surface of the shell 11 and the outer wall surface of the sound outlet nozzle 12 to block the opening of the shell 11, improve the airtightness, avoid sound leakage, and avoid foreign matter entering the inside of the shell 11 to affect the normal work of the open earphone 1. In this way, when the sound outlet nozzle 12 moves relative to the shell 11, the ear cap 2 moves together with the sound outlet nozzle 12, that is, moves relative to the shell 11. During the movement, the end surface of the ear cap 2 away from the sound generating hole 221 is deformed under stress due to the hard texture of the shell 11 and the contact friction between the ear cap 2 and the shell 11, and when the end surface of the ear cap 2 is deformed and protruded, the movement of the sound outlet nozzle 12 will also be affected.

[0068] Therefore, by arranging the support 17, and the support 17 is made of hard plastic, hard rubber or other materials with certain hardness, and since the ear cap 2 is made of soft silicone or other materials, the support 17 is annular, the outer wall surface of the support 17 is flush with the inner wall surface of the ear cap 2, and is connected to the end of the ear cap 2 away from the sound hole 221, so that the support 17 can provide support for the ear cap 2 between the ear cap 2 and the sound outlet 12 during the extension and retraction movement of the sound outlet 12, avoiding deformation of the ear cap 2, improving the smoothness of the extension and retraction movement of the sound outlet 12, thereby achieving better listening effect and improving user experience. The support 17 can be connected and fixed with the inner wall surface of the ear cap 2 by secondary injection molding, or can be integrally formed with the ear cap 2. Of course, the support 17 can also be connected to the outer wall surface of the sound outlet 12, which is not limited in the present application.

[0069] In actual use, after the user adjusts the sound outlet 12 to extend and retract, the user will want the sound outlet 12 to remain at the adjusted position to adapt to various sports scenes. For this purpose, the friction between the sound outlet 12 and the shell 11 can be used. In one implementation, the sound outlet 12 and the shell 11 can be interference fit, and the wall surfaces in contact with each other can be deformed and extruded, for example, the wall surfaces in contact with each other of the sound outlet 12 and the shell 11 are made of soft rubber. In another implementation, a sealing structure can be arranged between the sound outlet 12 and the shell 11, that is, the sealing structure itself is elastically deformed and generates resistance to prevent the sound outlet 12 from loosening relative to the shell 11. The sealing structure can be a damping ring, a damping sheet or other structure formed of silicone material.

[0070] Specifically, the sealing structure of the open earphone 1 can be a sealing ring 18 made of silicone, rubber or other damping material. The sealing ring 18 is arranged on one of the shell 11 and the sound outlet 12, and sealingly abuts the other of the shell 11 and the sound outlet 12. In an embodiment of the present application, the sound outlet 12 is nested in the shell 11, and the sealing ring 18 is clamped between the outer wall surfaces of the shell 11 and the sound outlet 12. In this case, a fixing groove can be arranged on the sound outlet 12 or the shell 11, and the sealing ring 18 is embedded and fixed in the fixing groove. The arrangement of the sealing ring 18 also helps to reduce the resonance amplitude of the sound outlet 12 and the shell 11 due to mechanical structure during sound transmission, thereby avoiding damage to the mechanism due to vibration stress reaching the limit, and the sealing ring 18 clamped between the outer wall surfaces of the shell 11 and the sound outlet 12 can also seal the gap between the outer wall surfaces of the shell 11 and the sound outlet 12 due to relative movement, avoiding foreign matter from entering the inside of the open earphone 1, affecting the normal work of the open earphone 1, and prolonging the service life of the open earphone 1.

[0071] Please refer to Figures 8 to 11In actual use, when the distance between the sound hole 121 and the ear canal opening is shortened by extending the sound nozzle 12, a seal and extrusion are formed between the ear cap 2 and the ear canal opening, thereby reducing noise interference for the user and achieving a high noise reduction effect. If the extrusion force between the ear cap 2 and the ear canal opening is too large, it will cause discomfort to the user's ear. Therefore, in some embodiments, a cavity 101 is defined between the inner wall surface of the ear cap 2 and the outer wall surface of the sound nozzle 12. When the extrusion force between the ear cap 2 and the ear canal opening is too large, because the ear cap 2 is soft and has a certain deformation ability, and there is a cavity 101 between the ear cap 2 and the sound nozzle 12, the part of the ear cap 2 extruded with the user's ear canal opening can retract in the extension direction of the sound nozzle 12, avoiding the discomfort of the user's ear caused by the extrusion force being too large, and maintaining a good listening use effect, thereby meeting the use needs of different users.

[0072] The above is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An ear cap for use in open-back headphones, the open-back headphones comprising a housing and a sound outlet, the ear cap being fitted over the outside of the sound outlet, the sound outlet having a sound outlet hole, the sound outlet being retractable relative to the housing, the housing having a mounting opening, characterized in that... The ear cap comprises: a guide part provided with a connecting structure, the guide part is detachably connected with the sound outlet through the connecting structure, the guide part is arranged at the mounting port, and the guide part can be telescopically moved along the mounting port relative to the shell under the driving of the sound outlet; and a sealing part connected with the guide part, the sealing part is provided with a sound hole communicating with the sound hole.

2. The ear cap of claim 1, wherein One of the connecting structure and the sound outlet is provided with a buckle, the other of the connecting structure and the sound outlet is provided with a buckle groove, and the buckle is configured to be matched with the buckle groove.

3. The ear cap of claim 1, wherein Further comprising: a support connected to the guide part and used for supporting on the ear cap and the sound outlet.

4. The ear cap of claim 3, wherein The support is annular and connected to one end of the guide part away from the sound hole.

5. The ear cap of claim 1, wherein In the axial direction of the mounting port, the length of the sealing part is greater than the length of the guide part.

6. The ear cap of claim 1, wherein The ear cap is provided in a long barrel shape.

7. The ear cap of any one of claims 1 to 6, wherein, The ear cap further comprises a sealing skirt connected to the outer wall of the sealing part and arranged around the sealing part.

8. An open earphone, characterized by The open earphone comprises: an earphone body comprising a wearing part and a sound generating part connected with each other, the sound generating part comprising a shell and a sound outlet, the shell being connected with the wearing part, the sound outlet being provided with a sound hole, and the sound outlet being telescopically movable relative to the shell; and The ear cap of any one of claims 1 to 7 is sleeved on the sound outlet, the sound hole of the ear cap communicates with the sound hole, and the ear cap can be moved under the driving of the sound outlet when worn.

9. The open headphone of claim 8, wherein Further comprising: a sealing ring arranged on one of the shell and the sound outlet and sealingly abutting against the other of the shell and the sound outlet.

10. The open earphone of claim 8, wherein The inner wall surface of the ear cap and the outer wall surface of the sound outlet further define a cavity.

11. The open ear headphone of claim 8, wherein One of the inner wall of the shell and the sound outlet is provided with a guide groove, and the other of the inner wall of the shell and the sound outlet is provided with a guide block, the guide groove extends along the telescopic movement direction of the sound outlet, and the guide block is slidably arranged in the guide groove.

12. The open ear headphone of claim 11, wherein The guide block has a plurality of guide blocks arranged on the outer wall surface of the sound outlet and arranged on one end of the sound outlet away from the sound hole. The guide groove has a plurality of guide grooves arranged on the inner wall of the shell, and the plurality of guide blocks one-to-one correspond to the plurality of guide grooves and are slidably arranged in the guide grooves.

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