Open type earphone

Abstract

The open type earphone comprises a wearing part, a sound production part, a pump and an air bag, the sound production part comprises a shell and a sound outlet nozzle, the shell is connected with the wearing part, the sound outlet nozzle is provided with a sound outlet hole, and the sound outlet nozzle is movably connected with the shell and can telescopically move relative to the shell so as to adjust the distance between the sound outlet hole and an ear canal opening of a user; the air bag is arranged in the shell, the pump is arranged in the shell, and the pump can inflate or inhale the air bag. According to the embodiment of the invention, the pump and the air bag are arranged, and the pump is controlled to inflate or deflate the air bag to drive the sound outlet nozzle to telescopically move relative to the shell, so that when the open type earphone is worn, the distance between the sound outlet hole and the ear canal opening of the user can be adjusted, and the listening effect of the open type earphone is improved.

Description

TECHNICAL FIELD

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

[0002] With the vigorous development of the smart wear industry, the types of earphones are becoming more and more diverse to meet the needs of different use scenarios of users. In the related art, the sound outlet of the open earphone is usually not adjustable. Then in actual application, the ear sizes of different users are different, which leads to different distances between the sound outlet of the open earphone and the ear canal opening of the user when different users wear the open earphone. For users with larger ear sizes, the distance between the sound outlet and the ear canal opening is too far, which easily causes the open earphone to leak sound more seriously, thereby resulting in poor listening effect. CONTENT OF THE UTILITY MODEL

[0003] The embodiments of the present application provide an open earphone, aiming to improve the listening effect of the open earphone.

[0004] The embodiments of the present application provide an open earphone, which comprises a wearing part, a sound generating part, a pump and an air bag. The sound generating part comprises a shell and a sound outlet nozzle. The shell is connected with the wearing part. The sound outlet nozzle is provided with a sound outlet hole. The sound outlet nozzle is movably connected with the shell and can be telescopically moved relative to the shell to adjust the distance between the sound outlet hole and the ear canal opening of the user. The air bag is arranged in the shell and is drivingly connected with the sound outlet nozzle. The pump is arranged in the shell. The pump can inflate or deflate the air bag. In the case that the pump inflates the air bag, the air bag expands to make the sound outlet nozzle elongate relative to the shell. In the case that the pump deflates the air bag, the air bag contracts to make the sound outlet nozzle contract relative to the shell.

[0005] The embodiments of the present application are provided with the pump and the air bag. The pump can inflate or deflate the air bag. The air bag is drivingly connected with the sound outlet nozzle to drive the sound outlet nozzle and the ear cap to telescopically move relative to the shell. That is, when the open earphone is worn, in order to meet different use needs of the user, the pump is controlled to work to inflate or deflate the air bag, so that the volume of the air bag changes and drives the sound outlet nozzle and the ear cap to telescopically move relative to the shell to adjust the distance between the sound outlet hole of the sound outlet nozzle and the ear canal opening of the user. In this way, the open earphone can be applicable to ear parts of different sizes and can achieve good listening effect. In addition, when the distance between the sound outlet hole of the sound outlet nozzle and the ear canal opening of the user is adjusted, the open earphone can be adjusted to an open mode, a semi-open mode or a noise reduction mode. In this way, the user can switch different modes on one open earphone to improve the use experience of the user. BRIEF DESCRIPTION OF DRAWINGS

[0006] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0007] Figure 1 Structure schematic diagram of an open earphone in an extended state according to an embodiment of the present application;

[0008] Figure 2 Structure schematic diagram of an open earphone in a contracted state according to an embodiment of the present application;

[0009] Figure 3 Structure schematic diagram of a cross section of an open earphone according to an embodiment of the present application;

[0010] Figure 4 Module schematic diagram of an open earphone according to an embodiment of the present application;

[0011] Figure 5 Another module schematic diagram of an open earphone according to an embodiment of the present application;

[0012] Figure 6 Structure schematic diagram of an exploded view of an open earphone according to an embodiment of the present application;

[0013] Figure 7 Structure schematic diagram of an ear cap according to an embodiment of the present application;

[0014] Figure 8 Another structure schematic diagram of an exploded view of an open earphone according to an embodiment of the present application;

[0015] Figure 9 Structure schematic diagram of a part of an open earphone according to an embodiment of the present application.

[0016] The drawings are explained as follows: 1, open earphone; 10, sound generating part; 101, loudspeaker assembly; 102, front cavity; 103, rear cavity; 11, shell; 12, sound outlet; 121, sound hole; 122, buckle groove; 14, guide structure; 141, guide groove; 142, guide block; 15, support; 16, sealing ring; 17, feedback microphone; 20, wearing part; 30, pump; 31, air bag; 32, transmission assembly; 321, slide rail; 322, slide block; 40, control board; 50, position detection feedback device; 60, main board; 70, interactive part; 80, battery; 2, ear cap; 210, guide part; 211, buckle; 220, sealing part; 221, sound generating hole; 230, cap body part. DETAILED DESCRIPTION

[0017] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0018] The earphone is a pair of conversion units that receive electrical signals from a media player or a receiver and convert them into audible sound waves using a speaker close to the ear.

[0019] From the development of the entire audio industry, wireless earphones are still a new thing. Wireless earphones are earphones that use wireless communication technologies such as Bluetooth to achieve wire-free connection. Users can transmit audio to mobile phones or other devices wirelessly. The main advantages of wireless earphones include no wire constraints, easy to carry and use.

[0020] There are many types of wireless earphones. For some open earphones that can be directly attached to the user's ear for wearing, this type of open earphone is usually relatively small in size and easy to use, and can be applied to various scenes such as commuting, conference, and exercise, so it is deeply loved by consumers.

[0021] However, in the related art, the open earphone is attached to the user's ear for wearing, and the sound emitting port on the open earphone cannot be adjusted after wearing. In actual applications, different users have different ear sizes, which results in different distances between the sound emitting port of the open earphone and the ear canal opening of the user when different users wear the open earphone. For users with large ear sizes, the distance between the sound emitting port and the ear canal opening is too far, which easily causes the open earphone to leak sound more seriously, thereby resulting in poor listening effect.

[0022] To solve the above problems, please refer to Figures 1-3 The embodiments of the present application provide an open earphone 1, which comprises a sound emitting part 10 and a wearing part 20 connected with the sound emitting part 10. The sound emitting part 10 is used to generate a sound signal, and the wearing part 20 can cooperate with the sound emitting part 10 to enable the open earphone 1 to be worn on the user's ear.

[0023] The sound generating part 10 comprises a shell 11 connected with the wearing part 20 and a sound outlet nozzle 12 provided with a sound outlet hole 121, the sound outlet nozzle 12 is telescopically movable relative to the shell 11, so that the open earphone 1 can adjust the distance between the sound outlet hole 121 and the user's ear canal opening when being worn. It should be noted that the sound outlet nozzle 12 is telescopically movable relative to the shell 11 and has an extended state and a retracted state, when the sound outlet nozzle 12 is in the retracted state, the sound outlet hole 121 is spaced apart from the user's ear canal opening; when the sound outlet nozzle 12 is in the extended state, the sound outlet hole 121 can be spaced apart from the user's ear canal opening or can not be spaced apart, and it should be noted that the extended state can include a first extended state and a second extended state, which will be described in detail below.

[0024] In the worn state, the sound generating part 10 is located in the concha cavity or partially located in the concha cavity, 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, and the sound generating part 10 cooperates with the wearing part 20 to hold the open earphone 1 stably on the user's ear.

[0025] Please refer to Figure 3 , the sound generating part 10 further comprises a loudspeaker assembly 101 arranged in the shell 11, the loudspeaker assembly 101 is the core component for generating sound, which converts electrical signals into sound signals, and the loudspeaker assembly 101 can adopt, for example, a moving coil loudspeaker, an electrostatic loudspeaker, etc. That is, the sound generating part 10 also has a loudspeaker, which generates sound and propagates to the outside through the sound outlet hole 121, and the open earphone 1 of the present application is an air conduction type earphone, that is, the sound generated by the loudspeaker assembly 101 is propagated through the air and enters the user's ear canal.

[0026] The shell 11 can protect the loudspeaker assembly 101, that is, the loudspeaker assembly 101 can be fixedly arranged inside the shell 11, that is, the loudspeaker assembly 101 is arranged in the shell 11 and divides the shell 11 into a front cavity 102 and a rear cavity 103, and the sound outlet hole 121 communicates with the front cavity 102. 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, and the sound emitted by the loudspeaker assembly 101 is propagated outward through the opening and the sound outlet hole 121 on the sound outlet nozzle 12. Among them, 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.

[0027] In the case that the sound outlet 12 is in the form of a cover with an opening on one side, and the sound outlet 12 and the shell 11 are in the form of a slidable sleeve joint structure, the shell 11 is in the form of a groove structure with an opening, and the sound outlet 12 can be nested inside the shell 11. Of course, the sound outlet 12 can also be sleeved outside the shell 11. In the case that the shell 11 is in the form of a relatively closed cavity structure, the sound outlet 12 can be sleeved outside the shell 11. In the case that the shell 11 and the sound outlet 12 are in the form of a slidable sleeve joint, the loudspeaker assembly 101 can also be arranged on the sound outlet 12. In this arrangement, during the extension and retraction of the sound outlet 12, the loudspeaker assembly 101 moves relative to the shell 11.

[0028] In other embodiments, in order to achieve the extension and retraction of the sound outlet 12 relative to the shell 11, a stretchable member can also be used between the two, for example, the sound outlet 12 can be connected to the shell 11 through a bellows structure. In this way, the bellows structure is stretched and retracted to achieve the extension and retraction of the sound outlet 12 relative to the shell 11.

[0029] Referring to Figure 4 The open earphone also has a feedback microphone 17 mounted on the sound outlet 12. The feedback microphone 17 mainly uses the reversible polarization characteristics of ferroelectric materials. When an external electric field acts on the ferroelectric material, it will produce polarization. When the external electric field disappears, the polarization will also disappear. This reversible polarization characteristic enables the feedback microphone 17 to capture and process sound signals and convert them into electrical signals for transmission and processing. At the same time, the feedback microphone 17 has a noise reduction function, that is, after processing the above-mentioned signals, the feedback microphone 17 generates an inverse waveform to cancel out the original noise, thereby achieving the effect of noise reduction.

[0030] Referring to Figure 5 In addition, the open earphone 1 of the present application also has a battery 80 and a main board 60. The main board 60 is electrically connected to the battery 80. When the main board 60 receives a charging signal, the main board 60 can control the battery 80 to charge. After the battery 80 is fully charged, the battery 80 feeds back a signal to the main board 60 that the charging is complete, and the battery 80 stops charging. The battery 80 and the main board 60 can be arranged together with the loudspeaker assembly 101 in the sound generating part 10. Of course, other arrangements are also possible, for example, the control circuit board and the loudspeaker assembly 101 can be located in the sound generating part 10, and the battery 80 can be located in the wearing part 20. Alternatively, the battery 80 and the main board 60 can be located in the wearing part 20, and the loudspeaker assembly 101 can be located in the sound generating part 10. Still alternatively, the loudspeaker assembly 101 and the main board 60 can be located in the sound generating part 10, and the battery 80 can be located in the wearing part 20. These arrangements are all feasible. The battery 80 can be in the form of a rechargeable lithium battery 80 or a disposable dry battery 80, and the present application does not limit this.

[0031] Please refer to Figures 4-5 In order to adjust the distance between the sound outlet hole 121 and the user's ear canal, the open earphone 1 further comprises a pump 30 and an air bag 31. The pump 30 and the air bag 31 are arranged in the shell 11, and the shell 11 can protect the pump 30 and the air bag 31. The pump 30 can inflate or deflate the air bag 31; that is, the pump 30 is used to move liquid or gas by applying pressure or suction, and to generate the flow of liquid or gas by changing the volume inside the pump 30 or the external force. The air bag 31 generally refers to a soft and inflatable container, and the air bag 31 is usually made of rubber, plastic or other elastic materials, and the material of the air bag 31 is not limited in the embodiment of the present application. In addition, the air bag 31 can contain liquid or gas, and the air bag 31 can expand or contract when the air bag 31 is subjected to external pressure or internal pressure change. The embodiment of the present application takes the air bag 31 containing gas as an example for description.

[0032] Further, the air bag 31 is in transmission connection with the sound outlet nozzle 12, so that when the open earphone 1 is worn, by controlling the pump 30 to work, the pump 30 can inflate or deflate the air bag 31, so that the volume of the air bag 31 changes to drive the sound outlet nozzle 12 to move, thereby adjusting the distance between the sound outlet hole 121 and the user's ear canal; that is, in the case that the pump 30 inflates the air bag 31, the air bag 31 expands to make the sound outlet nozzle 12 elongate relative to the shell 11, and it should be noted that the state that the sound outlet nozzle 12 elongates relative to the shell 11 can include a first elongation state and a second elongation state; in the case that the pump 30 deflates the air bag 31, the air bag 31 contracts to make the sound outlet nozzle 12 contract relative to the shell 11.

[0033] Specifically, in actual use, when the distance between the sound outlet hole 121 on the sound outlet nozzle 12 and the ear canal of the user is too large, causing the open earphone 1 to leak sound seriously, so that the user feels that the volume of the open earphone 1 is too small, the pump 30 can be used to inflate the air bag 31 to drive the sound outlet nozzle 12 to extend to the first extended state, so that the distance between the sound outlet hole 121 and the ear canal of the user is shortened, so as to reduce the leakage of sound and increase the volume, and at this time, the noise reduction effect of the open earphone 1 is best. When the user needs the open earphone 1 to be more comfortable and can also play a noise reduction effect, the pump 30 is used to inflate the air bag 31 to drive the sound outlet nozzle 12 to extend to the second extended state, so that the distance between the sound outlet hole 121 and the ear canal of the user is increased. When the user feels that the area of the ear canal where the sound outlet nozzle 12 is located is unreasonable, causing the user to use uncomfortably, the pump 30 is used to deflate the air bag 31 to drive the sound outlet nozzle 12 to retract, so as to increase the distance between the sound outlet nozzle 12 and the ear canal. That is, when the pump 30 works and the pump 30 applies pressure to the air bag 31, the air bag 31 is in an inflated state, so that the sound outlet nozzle 12 can be extended relative to the shell 11, and according to the size of the pressure applied by the pump 30 to the air bag 31, the size of the volume of the air bag 31 can be changed, so as to realize the extension of the sound outlet nozzle 12 relative to the shell 11 to the first extended state or the second extended state. It should be noted that the inflation amount of the pump 30 to the air bag 31 in the first extended state is greater than the inflation amount of the pump 30 to the air bag 31 in the second extended state.

[0034] When the pump 30 works and the pump 30 applies suction to the air bag 31, the air bag 31 is in a contracted state, and the air bag 31 drives the sound outlet nozzle 12 to contract, so as to realize that the sound outlet nozzle 12 is in a contracted state.

[0035] Furthermore, since the air bag 31 is usually made of rubber, plastic or other elastic materials, the air bag 31 has elasticity, so that the air bag 31 can play a buffering role; that is, during the contraction of the sound outlet nozzle 12, the arrangement of the air bag 31 can avoid the damage of the open earphone 1 caused by the too fast movement of the sound outlet nozzle 12.

[0036] It should be noted that when the sound outlet nozzle 12 is in the first extended state, the open earphone 1 is in an ear-in mode, at this time, the noise reduction effect of the open earphone 1 is best; when the sound outlet nozzle 12 is in the second extended state, the open earphone 1 is in a semi-ear-in mode, at this time, the open earphone 1 has a certain noise reduction effect but cannot completely isolate external sound; when the sound outlet nozzle 12 is in the contracted state, the open earphone 1 is in an open mode, at this time, the open earphone 1 is good in ventilation when worn, so as to avoid the discomfort to the ear canal of the user.

[0037] The pump 30 is arranged and can inflate or deflate the air bag 31, and the air bag 31 is in transmission connection with the sound outlet nozzle 12 to drive the sound outlet nozzle 12 to extend or retract relative to the shell 11; that is, when the open earphone 1 is worn, in order to meet different use requirements of the user, the pump 30 is controlled to work, the pump 30 can inflate or deflate the air bag 31, so that the volume of the air bag 31 changes, and the sound outlet nozzle 12 is driven to extend or retract relative to the shell 11, so as to adjust the distance between the sound hole 121 of the sound outlet nozzle 12 and the ear canal opening of the user. In this way, the open earphone 1 can be suitable for different sizes of ears and can achieve a better listening effect. In addition, when adjusting the distance between the sound hole 121 of the sound outlet nozzle 12 and the ear canal opening of the user, the open earphone 1 can be adjusted to an open mode, a semi-open mode or a noise reduction mode. In this way, the user can switch different modes on one open earphone 1 to improve the user's use experience.

[0038] The sound generating part 10 also has a loudspeaker. Since the air bag 31 is in transmission connection with the sound outlet nozzle 12 in the embodiment of the application, when the air bag 31 expands, the air bag 31 will occupy the inside of the shell 11, which will affect the sound output of the loudspeaker. The loudspeaker is arranged in the sound outlet nozzle 12, and the sound outlet nozzle 12 is provided with a sound hole 121, so that the sound emitted by the loudspeaker can be normally transmitted to the user.

[0039] Please refer to Figure 6 In some embodiments, in order to avoid the relative twisting of the sound outlet nozzle 12 relative to the shell 11 during the driving of the sound outlet nozzle 12 to extend or retract, the application can further be provided with a guide structure 14 between the sound outlet nozzle 12 and the shell 11. The guide structure 14 is used to prevent the sound outlet nozzle 12 from being twisted in the circumferential direction relative to the shell 11 during the extension or retraction. Specifically, the guide structure 14 can include a guide groove 141 and a guide block 142. The guide groove 141 can be arranged on the sound outlet nozzle 12 or on the shell 11 and extends in the extension or retraction direction of the sound outlet nozzle 12. The guide block 142 slides along the guide groove 141, that is, the arrangement positions of the guide groove 141 and the guide block 142 of the application can be interchanged between the sound outlet nozzle 12 and the shell 11. Through the arrangement of the guide structure 14, the relative twisting between the sound outlet nozzle 12 and the shell 11 is avoided, so that in the case that the cross-sectional shape of the sound outlet nozzle 12 and the shell 11 is designed as a 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.

[0040] Of course, in other structural forms, the guiding structure 14 can not be provided, but the shape setting between the shell 11 and the sound outlet nozzle 12 can be used to achieve. For example, the cross-sectional profile shape of the shell 11 and the sound outlet nozzle 12 can be set as a racetrack type, a polygon, etc., so that the shell 11 and the sound outlet nozzle 12 are provided with mutually sliding planes, so that the sound outlet nozzle 12 can be prevented from being twisted relative to the shell 11 during movement.

[0041] Please refer to Figure 4 In some embodiments, the transmission assembly 32 is connected with the air bag 31, and the transmission assembly 32 is also in transmission connection with the sound outlet nozzle 12. It can be understood that one end of the transmission assembly 32 is connected with the air bag 31, and the other end of the transmission assembly 32 is in transmission connection with the sound outlet nozzle 12. When the pump 30 applies pressure to the air bag 31, the pump 30 can inflate the air bag 31, so that the air bag 31 expands, so that the transmission assembly 32 moves away from the wearing part 20, and since the transmission assembly 32 is in transmission connection with the sound outlet nozzle 12, the sound outlet nozzle 12 also moves, so that the sound outlet nozzle 12 is elongated relative to the shell 11 to the first elongated state or the second elongated state. When the pump 30 applies suction to the air bag 31, the pump 30 will suck the air in the air bag 31 away, so that the air bag 31 contracts, so that the transmission assembly 32 moves towards the wearing part 20, and since the transmission assembly 32 is in transmission connection with the sound outlet nozzle 12, the sound outlet nozzle 12 also moves, so that the sound outlet nozzle 12 is contracted relative to the shell 11 to the contracted state.

[0042] It should be noted that the type of the pump 30 is not limited in the embodiments of the present application. For example, the pump 30 can include one of a micro air pump, a piezoelectric pump, and a micro electromagnetic pump. The micro air pump is a small gas delivery device with a gaseous working medium, and its working principle is that the circumferential movement of the motor makes the diaphragm inside the pump 30 move reciprocally through a mechanical device, so as to compress or stretch the air in the pump cavity of a fixed volume. That is, when the micro air pump is in the inflation state, the motor drives the diaphragm to move to one side of the pump cavity, compresses the air in the pump cavity, and forms high pressure. At the same time, the exhaust port of the pump cavity is opened, the high pressure air is discharged from the pump cavity into the air bag 31, so that the air bag 31 expands. When the micro air pump 30 is in the suction state, the motor drives the diaphragm to move to the other side of the pump cavity, stretches the air in the pump cavity, and forms negative pressure. At the same time, the air inlet of the pump cavity is opened, and the atmospheric pressure outside the pump cavity presses the air into the pump cavity. With the reciprocating movement of the diaphragm, the air in the pump cavity is directly discharged to the atmosphere, so as to realize the air discharge function, so that the air bag 31 contracts.

[0043] The core of the piezoelectric pump is a piezoelectric vibrator. The piezoelectric vibrator will be stretched or bent under the action of an electric field. The deformation is caused by the inverse piezoelectric effect of the piezoelectric ceramic, which causes the piezoelectric vibrator to deform, and the volume of the pump cavity changes or the electric field fluctuation generated by the piezoelectric vibrator is used to inflate or deflate the pump 30. That is, when a positive electric field is applied to the piezoelectric vibrator of the piezoelectric pump, the piezoelectric vibrator will be stretched, driving the elastic substrate to bend and deform, thereby increasing the volume of the pump cavity. As the volume of the pump cavity increases, the internal pressure decreases, so a negative pressure state is formed. In the negative pressure state, external gas is sucked into the pump cavity. Subsequently, when the electric field direction changes or the electric field is removed, the piezoelectric vibrator will contract, thereby reducing the volume of the pump cavity. As the volume of the pump cavity decreases, the internal pressure increases, forming a high pressure state. In the high pressure state, the gas in the pump cavity is discharged into the air bag 31, achieving the inflation function. When a reverse electric field is applied to the piezoelectric vibrator of the piezoelectric pump, the piezoelectric vibrator will be shortened or bent, thereby reducing the volume of the pump cavity. At this time, the pipeline connected between the pump cavity and the air bag 31 is opened. As the volume of the pump cavity decreases and the pipeline connected between the pump cavity and the air bag 31 is opened, the gas in the air bag 31 is discharged under the action of the pressure difference, achieving the deflation function.

[0044] Please continue to refer to Figure 4 In some embodiments, the transmission assembly 32 includes a sliding rail 321 and a sliding block 322.

[0045] Specifically, the sliding rail 321 is connected to the sound outlet 12; the sliding block 322 is in sliding connection with the sliding rail 321, and the sliding block 322 is connected with the air bag 31. It can be understood that one end of the air bag 31 is connected with the pump 30, and the other end of the air bag 31 is connected with the sliding block 322. When the pump 30 inflates the air bag 31, the air bag 31 expands to make the sliding block 322 slide on the sliding rail 321 away from the wearing part 20, and since the sliding rail 321 is connected with the sound outlet 12, the sliding block 322 can push the sound outlet 12 to move, so that the sound outlet 12 is elongated to the first elongated state or the second elongated state; when the pump 30 sucks the air in the air bag 31 into the pump cavity, the air bag 31 contracts to make the sliding block 322 slide on the sliding rail 321 towards the wearing part 20, and at the same time the sliding block 322 pulls the sound outlet 12 back to make the sound outlet 12 in the contracted state; that is, by driving the sliding block 322 to make reciprocating motion on the sliding rail 321, the extension and contraction of the sound outlet 12 can be realized, so that the listening effect of the open earphone 1 is improved.

[0046] Please refer to Figure 5In some embodiments, the open earphone 1 further comprises a control board 40 and a position detection feedback device 50; the control board 40 is electrically connected with the main board 60, so that the main board 60 can control the control board 40 to work; the control board 40 and the position detection feedback device 50 can be arranged in the shell 11, so that the shell 11 can protect the control board 40 and the position detection feedback device 50.

[0047] The control board 40 is electrically connected with the pump 30, and the position detection feedback device 50 is electrically connected with the control board 40. For example, when the user needs to adjust the sound outlet 12 to the first elongated state, the control board 40 can receive a corresponding signal to control the pump 30 to perform the inflation function; at this time, the pump 30 can inflate the air bag 31 according to the elongated position of the sound outlet 12, so that the air bag 31 can expand to push the slider 322 to slide away from the wearing part 20, and accurately drive the sound outlet 12 to the position of the first elongated state; when the sound outlet 12 is adjusted to the first elongated state, the slider 322 stops sliding, and the position detection feedback device 50 detects the position information and feeds back the position information to the control board 40, so as to ensure that the sound outlet 12 is adjusted to the first elongated state.

[0048] It should be noted that the position detection feedback device 50 can detect the position information of the slider 322 or the position information of the sound outlet 12, and the embodiments of the present application do not make specific limitations.

[0049] For example, when the position detection feedback device 50 is arranged on the slider 322, the position detection feedback device 50 can be used to detect the position information of the slider 322, and feed back the detected position information of the slider 322 to the control board 40; at this time, the control board 40 can determine whether the open earphone 1 is in the mode required by the user according to the received position information.

[0050] When the position detection feedback device 50 is arranged on the sound outlet 12, the position detection feedback device 50 can be used to detect the position information of the sound outlet 12, and feed back the detected position information of the sound outlet 12 to the control board 40; at this time, the control board 40 can determine whether the open earphone 1 is in the mode required by the user according to the received position information. Hereinafter, the position detection feedback device 50 arranged on the slider 322 is taken as an example for description.

[0051] Further, in some embodiments, the position detection feedback device 50 comprises a Hall sensor and a magnet. The Hall sensor detects the change of magnetic flux when the magnet is in different positions and outputs to the control board 40; the magnet is arranged on the slider 322; that is, the magnet can be embedded in the slider 322, or can be fixed on the shell of the slider 322 by connection. When the slider 322 slides on the slide rail 321, the magnet moves with the slider 322, so that the position of the magnet changes, thereby changing the magnetic field environment of the Hall sensor. Taking the case that the sound outlet 12 is in the first extended state as an example.

[0052] When the sound outlet 12 needs to be extended to the first extended state, the slider 322 slides on the slide rail 321 to push the sound outlet 12 to the first extended state, and in order to confirm whether the sound outlet 12 is in the first extended state, the Hall sensor can detect the change of magnetic flux of the magnet at this time, and the Hall sensor converts the information of the change of magnetic flux into an electrical signal and outputs to the control board 40, and the control board 40 can determine the position of the slider 322 according to the received electrical signal, and feedback the position of the sound outlet 12 at this time through the position of the slider 322, thereby determining whether the sound outlet 12 is in the first extended state at this time.

[0053] In other embodiments, the position detection feedback device 50 comprises a light sensor arranged on the slider 322; that is, the light sensor can be embedded in the slider 322, or can be fixed on the shell of the slider 322 by connection, and the light sensor is used to feedback the change of intensity of the received light beam to the control board 40. It can be understood that the transmitter of the light sensor will aim at the sound outlet 12 to emit a light beam, and when the light beam meets the obstruction of the sound outlet 12, the light beam will be emitted back to the receiver in the light sensor, the receiver can convert the different light signals of the received light beam into electrical signals corresponding to the light signals, and output the electrical signals to the control board 40, and the control board 40 can determine the position of the slider 322 according to the received electrical signals, and feedback the position of the sound outlet 12 at this time through the position of the slider 322.

[0054] In some embodiments, the position detection feedback device 50 comprises a first contact spring and a plurality of second contact springs. Specifically, the first contact spring is arranged on the slider 322, and the plurality of second contact springs are arranged on the inner wall of the housing 11 near the sound outlet 12, and the plurality of second contact springs are arranged at different positions along the sliding direction of the slider 322. That is, the second contact springs are arranged on the inner wall of the housing 11 near the sound outlet 12, so that when the slider 322 slides on the slide rail 321, the first contact spring contacts the second contact springs at different positions to output different signal values to the control board 40. Taking the case that the sound outlet 12 is elongated to the first elongated state as an example, when the slider 322 slides on the slide rail 321 and causes the sound outlet 12 to be elongated to the first elongated state, the first contact spring contacts the second contact springs at different positions during the sliding of the slider 322 to output different signal values to the controller, and the controller can determine the position of the slider 322 according to the received signal values, so as to confirm whether the sound outlet 12 is elongated to the first elongated state at this time.

[0055] Please continue to refer to Figure 5 In some embodiments, the open earphone 1 further comprises an interactive element 70, which is partially arranged on the housing 11 and electrically connected with the main board 60. It can be understood that the housing 11 is provided with an opening (not shown in the figure), and part of the interactive element 70 is arranged through the opening, so that part of the interactive element 70 is exposed on the housing 11 for the user to operate. For example, the interactive element 70 can be an adjustment button, which can be a physical button arranged on the housing 11, for example, comprising two buttons representing "+" and "-", when the user presses the "+" button, the main board 60 receives the signal and sends it to the control board 40, and the control board 40 can control the pump 30 to inflate the air bag 31, so that the air bag 31 expands to elongate the sound outlet 12 relative to the housing 11; when the user presses the "-" button, the main board 60 receives the signal and sends it to the control board 40, and the control board 40 can control the pump 30 to deflate the air bag 31, so that the air bag 31 contracts to drive the sound outlet 12 to contract relative to the housing 11. In this way, the user can operate more conveniently. In addition to being a physical button, it can also be a virtual button formed in an application program on an electronic terminal, that is, the operation of the pump 30 in this embodiment can also be controlled by a remote control signal, so that the user can not touch the open earphone 1 during adjustment, which is more convenient to use.

[0056] The interactive piece 70 and the sound outlet 12 of the present application are arranged on different sides of the housing 11. Specifically, the sides of the housing 11 include a first side facing away from the user's ear in the wearing state of the open earphone 1, and a second side away from the wearing part 20. The interactive piece 70 can be arranged on the first side, and the sound outlet 12 can be arranged on the second side. In this way, the arrangement meets the adjustment needs of the user in the wearing state of the open earphone 1, and the use is more convenient.

[0057] Referring to Figures 1-2 In some embodiments, the sound generating part 11 further includes an ear cap 2, which is detachably connected with the sound outlet 12 and sleeved outside the sound outlet 12. The ear cap 2 has a sound generating hole 221 communicating with the sound outlet hole 121, and is made of a flexible material, such as silicone. In addition, the detachable connection between the ear cap 2 and the sound outlet 12 can make the ear cap 2 easy to be detached for cleaning or replacement. In particular, for users who often sweat or use in a humid environment, this design can help them maintain the sanitary state of the ear cap 2. In addition, the detachable connection between the ear cap 2 and the sound outlet 12 can facilitate the user to replace ear caps 2 of various sizes or types. The user can select a suitable ear cap 2 according to his own preference or ear size, thereby improving the wearing comfort.

[0058] Referring to Figure 7 In some embodiments, the housing 11 has a mounting port, and the sound outlet 12 is arranged in the mounting port and is movable relative to the housing 11. The ear cap 2 includes a guide part 210 and a sealing part 220. The guide part 210 is provided with a connecting structure, and the guide part 210 is detachably connected with the sound outlet 12 through the connecting structure. The ear cap 2 is used for sleeving outside the sound outlet 12, and the guide part 210 is arranged at the mounting port. The sealing part 220 is connected with the guide part 210, and the sealing part 220 is provided with a sound generating hole 221 communicating with the sound outlet hole 121. The guide part 210 can be moved relative to the housing 11 along the mounting port under the driving of the sound outlet 12, so that the ear cap 2 can adjust the distance between the sound generating hole 221 and the user's ear canal under the driving of the sound outlet 12.

[0059] Further, in some embodiments, the sealing portion 220 is arranged in a long cylindrical shape, and the ear cap 2 further comprises a cap body portion 230 connected to the outer wall of the sealing portion 220 and arranged around the sealing portion 220. The cap body portion 230 is arranged at the end of the sealing portion 220 away from the guide portion 210, and contacts the ear canal of the user when worn and seals the ear canal opening of the user to avoid sound leakage, thereby improving the listening effect. The cap body portion 230 can be formed as an umbrella-shaped structure, which can better fit the shape of the user's ear canal, especially the curve at the ear canal opening, to form a tighter sealing effect. In addition, the open part of the umbrella-shaped structure of the cap body portion 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, to adapt to different ear canal shapes and sizes of different users and provide a more personalized wearing experience.

[0060] Please refer to Figures 8-9 In order to improve the stability of the connection between the ear cap 2 and the sound outlet 12. In some embodiments, one of the connection structure of the ear cap 2 and the sound outlet 12 is provided with a buckle 211, and the other is provided with a buckle groove 122, and the buckle 211 is configured to be engaged with the buckle groove 122.

[0061] 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 engagement of the buckle 211 into the buckle groove 122, which reduces the wear caused by traditional screws or other fixing methods and reduces the risk of damage caused by repeated disassembly, 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, allowing the user to quickly disassemble and replace the ear cap 2, greatly improving the convenience of use, and the installation is firm, which can avoid accidental falling of the ear cap 2 during high-intensity activities when worn, thereby enhancing the overall stability of the earphone. The engagement design also ensures the assembly accuracy of the ear cap 2 and the sound outlet 12 each time, thereby ensuring that the sound hole 221 of the ear cap 2 can accurately align with the position of the sound hole 121 of the sound outlet 12 after each replacement, avoiding sound transmission problems caused by position deviation and ensuring the consistency of audio quality.

[0062] 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, so that the ear cap 2 and the sound outlet nozzle 12 can be attracted to each other when they are close and tightly connected together, and can be easily separated when disassembled, 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 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 precision 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.

[0063] Please continue to refer to Figures 8-9 In some embodiments, the open earphone 1 further includes a support 15 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 outside of the sound outlet nozzle 12, and 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 when the sound outlet nozzle 12 is in the retracted state or in the process of extension movement, and the ear cap 2 is abutted between the inner wall surface of the shell 11 and the outer wall surface of the sound outlet nozzle 12, respectively, to block the opening of the shell 11, improve the airtightness, avoid sound leakage, and avoid foreign matter from 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 is moved relative to the shell 11, the ear cap 2 will move together with the sound outlet nozzle 12, that is, relative to the shell 11. During the movement, the shell 11 is relatively hard and forms a certain contact friction with the ear cap 2, which will cause the end face of the ear cap 2 away from the sound generating hole 221 to be deformed under stress. When the end face of the ear cap 2 is deformed and protruded, it will also make the movement of the sound outlet nozzle 12 not smooth.

[0064] Therefore, by arranging the support 15, and the support 15 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 15 is annular, the outer wall surface of the support 15 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 15 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 15 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 15 can also be connected to the outer wall surface of the sound outlet 12, and the present application does not limit this.

[0065] 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 or rubber.

[0066] Please refer to Figure 9 , specifically, the sealing structure of the open earphone 1 can be a sealing ring 16 made of silicone, rubber or other damping materials. The sealing ring 16 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 16 is clamped between the outer wall surfaces of the shell 11 and the sound outlet 12. In this embodiment, a fixing groove can be arranged on the sound outlet 12 or the shell 11, and the sealing ring 16 is clamped and fixed in the fixing groove. The arrangement of the sealing ring 16 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 16 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, preventing 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.

[0067] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the present application, it is understood that if the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right" and the like are based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationships in the drawings are only used for exemplary illustration and cannot be understood as a limitation on the present application, for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0068] The above is only a preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An open earphone, characterized by, The open earphone comprises: a wearing part; a sound generating part comprising a shell and a sound outlet nozzle, the shell being connected to the wearing part, the sound outlet nozzle being provided with a sound outlet hole, the sound outlet nozzle being movably connected to the shell and being telescopically movable relative to the shell to adjust the distance between the sound outlet hole and the user's ear canal opening; an air bag arranged in the shell and being in transmission connection with the sound outlet nozzle; and a pump arranged in the shell, the pump being capable of inflating or deflating the air bag; in the case that the pump inflates the air bag, the air bag expands to elongate the sound outlet nozzle relative to the shell; in the case that the pump deflates the air bag, the air bag contracts to contract the sound outlet nozzle relative to the shell.

2. Open headphones according to claim 1, characterized in that The pump comprises one of a micro air pump, a piezoelectric air pump and a micro electromagnetic pump.

3. The open ear headphone of claim 1, wherein The open earphone further comprises: a transmission assembly connected to the air bag and being in transmission connection with the sound outlet nozzle.

4. The open ear headphone of claim 3, wherein The transmission assembly comprises a sliding rail connected to the sound outlet nozzle and a sliding block in sliding connection with the sliding rail and being connected to the air bag.

5. The open ear headphone of claim 4, wherein The open earphone further comprises: a control board in electrical connection with the pump; and a position detection feedback device in electrical connection with the control board and being arranged on the sliding block and being used to detect the position information of the sliding block, or the position detection feedback device being arranged on the sound outlet nozzle and being used to detect the position information of the sound outlet nozzle.

6. The open headphone of claim 5, wherein The position detection feedback device comprises: a Hall sensor; and a magnet arranged on the sliding block; wherein, when the sliding block slides on the sliding rail, the magnet moves with the sliding block, and the Hall sensor detects the magnetic flux change of the magnet at different positions and outputs to the control board.

7. The open ear headphone of claim 5, wherein The position detection feedback device comprises: a light sensor arranged on the sliding block, the light sensor being used to feed back the intensity change of the received light beam to the control board.

8. The open ear headphone of claim 5, wherein, The position detection feedback device comprises: a first contact spring arranged on the sliding block; and a plurality of second contact springs arranged on the inner wall of the shell close to the sound outlet nozzle, the second contact springs being located at different positions in the sliding direction of the sliding block; wherein, when the sliding block slides on the sliding rail, the first contact spring contacts the second contact springs at different positions to output different signal values to the control board.

9. The open ear headphone of claim 5, wherein, The open earphone further comprises: a main board arranged in the shell and being in electrical connection with the control board; an interactive part partially arranged on the shell and being in electrical connection with the main board.

10. Open earphone according to any of claims 1 to 9, characterized in that The sound generating part further comprises an ear cap, the ear cap being detachably connected to the sound outlet nozzle and being sleeved outside the sound outlet nozzle, the ear cap having a sound generating hole communicating with the sound outlet hole.

11. The open ear headphone of claim 10, wherein The shell has a mounting port, and the ear cap comprises: a guide part provided with a connecting structure, the guide part being detachably connected to the sound outlet nozzle through the connecting structure, the guide part being arranged at the mounting port, the guide part being telescopically movable along the mounting port relative to the shell under the driving of the sound outlet nozzle; and a second contact spring arranged on the inner wall of the shell close to the sound outlet nozzle, the second contact spring being located at a different position in the sliding direction of the sliding block. A sealing portion is connected to the guiding portion, and the sealing portion is provided with the sound hole.

12. The open ear headphone of claim 11, wherein The ear cap further comprises: A support is connected to the guiding portion and is used for supporting on the ear cap and the sound outlet.

13. The open ear headphone of claim 1, wherein The sound generating portion further comprises a loudspeaker, and the loudspeaker is arranged in the sound outlet.

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