Earphone and method for eliminating occlusion effect of earphone

Abstract

The earphone and the method for eliminating the occlusion effect of the earphone are provided, the earphone is provided with at least one air release hole on the shell, and an air release switch corresponding to the at least one air release hole is arranged on the shell and movably connected to the shell to control the opening and closing state of the air release hole. The air release switch is provided with a transmission part and a shielding part, the transmission part passes through the inside and outside of the shell, the wearer of the earphone can hold one end of the transmission part extending outside the shell to operate the air release switch, the transmission part can drive the shielding part to move, and the shielding part can cover the air release hole or expose at least part of the air release hole when moving to different positions. Therefore, when the occlusion effect occurs in the ear canal of the wearer, more area of the air release hole can be exposed by operating the air release switch, the air release amount of the shell is increased, and the low-frequency signal in the shell can be timely and quickly released. The structure of the air release switch is simple and convenient to operate, and the occlusion effect can be effectively weakened or eliminated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic products, in particular to an earphone and a method for eliminating occlusion effect of the earphone. BACKGROUND

[0002] An earphone is a pair of transducing units which accept electrical signals from a media player or receiver and convert them into audible sound waves using a speaker close to the ear. Among them, the ear canal earphone usually includes semi-in-ear earphone and in-ear earphone, and the in-ear earphone is deeply loved by people because of its high-quality sound performance and excellent sound insulation effect.

[0003] The in-ear earphone is to place the sound outlet end of the shell into the external auditory canal of the wearer, and the sound outlet end of the earphone and the external auditory canal of the wearer usually have good sealing property to isolate external environmental sound and improve the sound quality of the earphone. However, due to the air-tightness characteristics of the earphone, when the wearer puts the earphone into the external auditory canal, the occlusion effect is caused by the wearer's speaking, chewing, swallowing or even movement in the closed environment of the auditory canal. In order to solve the occlusion effect, a scheme of setting an openable valve on the shell of the earphone is proposed, and when needed, the air flow generated in the auditory canal is discharged through the opening of the valve to reduce or eliminate the occlusion effect.

[0004] However, the existing valve structure is relatively complex and has poor stability in the earphone, especially in some small earphones. SUMMARY

[0005] The present application provides an earphone and a method for eliminating occlusion effect of the earphone, and the air release switch structure of the earphone is simple and easy to operate, which can effectively reduce or eliminate the occlusion effect.

[0006] In a first aspect, the present application provides an earphone, which comprises a shell and at least one air release switch, the shell is provided with at least one air release hole, the air release switch is movably connected to the shell, and the opening and closing state of the at least one air release hole is controlled by the air release switch.

[0007] The air release switch comprises a transmission part and a shielding part, the transmission part passes through the inside and outside of the shell, the shielding part is connected to one end of the transmission part in the shell, and the transmission part drives the shielding part to move so as to cover the air release hole or expose at least part of the air release hole.

[0008] The earphone provided in the application comprises a shell, at least one air leakage hole arranged on the shell, and an air leakage switch corresponding to the at least one air leakage hole, the air leakage switch being movably connected to the shell to control the opening and closing state of the air leakage hole. The air leakage switch is provided with a transmission part and a shielding part, the transmission part penetrating through the inside and outside of the shell, and the wearer of the earphone can hold one end of the transmission part extending outside the shell to operate the air leakage switch. The transmission part can drive the shielding part to move, and the shielding part can cover the air leakage hole or expose at least part of the air leakage hole when moving to different positions. Thus, when the occlusion effect occurs in the ear canal of the wearer, more area of the air leakage hole can be exposed by operating the air leakage switch, the air leakage amount of the shell is increased, and the low-frequency signal in the shell can be discharged in time and quickly. The air leakage switch has simple structure and convenient operation, and can effectively weaken or eliminate the occlusion effect.

[0009] In a possible implementation, the transmission part comprises a connecting rod and a rotating plate, the connecting rod penetrating through the inside and outside of the shell, the connecting rod having an operating part at one end extending outside the shell, and the rotating plate being connected to one end of the connecting rod inside the shell; the shielding part is connected to the rotating plate, and the connecting rod drives the rotating plate to rotate to make the shielding part cover the air leakage hole or expose at least part of the air leakage hole.

[0010] The air leakage switch is provided with the connecting rod and the rotating plate, the connecting rod penetrating through the inside and outside of the shell, and the wearer of the earphone can hold one end of the connecting rod extending outside the shell to rotate the connecting rod. The connecting rod can drive the rotating plate to rotate, and the shielding part can cover the air leakage hole or expose at least part of the air leakage hole when the rotating plate rotates to different positions.

[0011] In a possible implementation, the two ends of the rotating plate are a connecting end and a free end respectively, the connecting end being connected to the connecting rod, and the free end corresponding to the air leakage hole, and the shielding part being arranged at the free end.

[0012] The connecting end of the rotating plate is connected to the connecting rod, and the other end of the rotating plate opposite to the connecting end is a free end, the free end corresponding to the air leakage hole. The shielding part is arranged at the free end, the length between the two ends of the rotating plate corresponding to the radius of rotation, and the torque of the free end rotating around the connecting rod is large. The large-distance displacement of the shielding part can be realized by small-angle rotation of the connecting rod, and the air leakage switch is easier to adjust the opening and closing state of the air leakage hole.

[0013] In a possible implementation, the shielding part completely covers the air leakage hole in the orthographic projection on the air leakage hole, and part of the edge of the shielding part extends outside the rotating plate.

[0014] The shielding part completely covers the air leakage hole to ensure the covering effect of the rotating plate on the air leakage hole. Furthermore, part of the edge of the shielding part extends outside the rotating plate to reduce the width of the free end of the rotating plate and the volume of the air leakage switch.

[0015] In a possible implementation, the at least one air hole includes a first air hole and a second air hole arranged at intervals, and an area of the first air hole is smaller than an area of the second air hole.

[0016] By arranging the first air hole and the second air hole at intervals on the shell and making the area of the first air hole smaller than the area of the second air hole, the first air hole can serve as a regular air hole of the earphone to ensure the flowability of air inside the shell, make the earphone have a small air leakage amount, and improve the sound quality of the earphone; and the second air hole can serve as an additional air hole mainly used to increase the air leakage area of the air hole and timely release pressure to weaken or eliminate the occlusion effect in the case of the occlusion effect in the ear canal.

[0017] In a possible implementation, the shell is connected with an air hole switch, and the rotating plate can be rotated to at least make the shielding part cover the second air hole.

[0018] By installing the air hole switch on the shell, the air hole switch can at least control the opening and closing state of the second air hole with a larger area to open the second air hole to increase the air leakage amount of the earphone and weaken or eliminate the occlusion effect in the case of the occlusion effect in the ear canal.

[0019] In a possible implementation, the center of the connecting rod is located on the central axis of the line between the center of the first air hole and the center of the second air hole, and the rotating plate can be rotated to at least make the shielding part cover the first air hole or cover the second air hole.

[0020] By arranging the connecting rod of the air hole switch on the central axis of the line between the first air hole and the second air hole, the air hole switch can be rotated to cover the first air hole or the second air hole, and the air leakage state of the air hole on the shell can be that the first air hole is open and the second air hole is blocked, the first air hole is blocked and the second air hole is open, or the first air hole and the second air hole are both open.

[0021] In a possible implementation, the connecting rod is located at the side of the second air hole and away from the first air hole, and the rotating plate can be rotated to make the shielding part cover the second air hole.

[0022] By arranging the connecting rod of the air hole switch at the side of the second air hole away from the first air hole, in the process of rotating the rotating plate driven by the connecting rod, the shielding part located at the free end of the rotating plate can only cover the second air hole. In this way, the first air hole remains in an open state, and the air hole switch is used to control the opening and closing state of the second air hole.

[0023] In a possible implementation, the at least one air hole switch includes a first air hole switch and a second air hole switch, the rotating plate of the first air hole switch can be rotated to make the shielding part cover the first air hole, and the rotating plate of the second air hole switch can be rotated to make the shielding part cover the second air hole.

[0024] By setting the first air release switch and the second air release switch, the first air release switch can control the opening and closing state of the first air release hole, and the second air release switch can control the opening and closing state of the second air release hole, so that the air release area of the air release hole on the shell can be adjusted more accurately, and the occlusion effect can be effectively weakened or even eliminated while improving the sound quality of the earphone.

[0025] In a possible implementation, the connecting rod of the first air release switch is located on the side of the first air release hole away from the second air release hole, and the connecting rod of the second air release switch is located on the side of the second air release hole away from the first air release hole.

[0026] By setting the connecting rod of the first air release switch and the connecting rod of the second air release switch on the two sides away from each other of the first air release hole and the second air release hole, the distance between the rotation centers of the first air release switch and the second air release switch is far, and the overlapping area between the rotation area of the first air release switch and the rotation area of the second air release switch is small or even no overlapping, so that mutual interference between the first air release switch and the second air release switch can be avoided.

[0027] In a possible implementation, at least one positioning portion is arranged on the inner wall surface of the shell, and when the rotating plate rotates to abut against the positioning portion, the shielding portion covers the air release hole.

[0028] By arranging the positioning portion on the inner wall surface of the shell, the positioning portion can limit the position of the rotating plate, so that by rotating the rotating plate to abut against the positioning portion, the shielding portion is limited to the position of covering the air release hole, and it is ensured that the air release switch can completely block the air release hole.

[0029] In a possible implementation, one positioning portion is arranged on the inner wall surface of the shell, and the positioning portion is located on the side facing the first air release hole and the second air release hole.

[0030] By arranging one positioning portion in the area close to the first air release hole and the second air release hole, in the process of rotating the air release switch in two opposite directions, the air release switch can abut against the two sides away from each other of the positioning portion to limit the air release switch to the position of covering the first air release hole or covering the second air release hole.

[0031] In a possible implementation, the at least one positioning portion includes a first positioning portion and a second positioning portion, the first positioning portion is located on the side of the first air release hole, and the second positioning portion is located on the side of the second air release hole.

[0032] The first positioning part is arranged on the periphery of the first air vent, and the second positioning part is arranged on the periphery of the second air vent. The air vent switch can rotate back and forth between the first positioning part and the second positioning part. When the air vent switch rotates to abut against the first positioning part, the shielding part of the air vent switch covers the first air vent; when the air vent switch rotates to abut against the second positioning part, the shielding part of the air vent switch covers the second air vent.

[0033] In a possible implementation, a damping sheet is arranged on the inner wall surface of the shell, and the damping sheet covers the air vent.

[0034] The damping sheet is arranged on the inner wall surface of the shell and covers the air vent. The damping sheet can adjust the acoustic resistance and improve the sound quality of the earphone. In addition, the damping sheet can prevent foreign matters such as dust and hair in the external environment from entering the shell, and can achieve good dustproof effect.

[0035] In a possible implementation, the damping sheet includes a first damping sheet covering the first air vent and a second damping sheet covering the second air vent. The acoustic resistance of the first damping sheet is greater than that of the second damping sheet.

[0036] The acoustic resistance of the first damping sheet is greater than that of the second damping sheet. The first damping sheet causes the first air vent to have a small air leakage amount, and the second damping sheet causes the second air vent to have a large air leakage amount. In the case where the second air vent is covered, the first air vent maintains a small air leakage amount to improve the low-frequency effect of the earphone; when the occlusion effect occurs in the ear canal, the second air vent is opened to timely release the low-frequency signal in the earphone.

[0037] In a possible implementation, the transmission part includes a main rod and an elastic member. The main rod passes through the air vent, one end of the main rod extends out of the shell, and the shielding part is connected to the end of the main rod located in the shell. The elastic member is sleeved on the outer wall of the main rod.

[0038] The main rod is forced to move the shielding part away from the shell to open the air vent, or the elastic force of the elastic member drives the shielding part to move toward the shell to cover the air vent.

[0039] The air vent switch passes the main rod through the air vent, connects the shielding part to the end of the main rod located in the shell, and sleeves the elastic member on the outer wall of the main rod. By pressing the main rod, the shielding part can be moved away from the inner wall of the shell to open the air vent. After the external force applied to the main rod is removed, the elastic force of the elastic member can drive the main rod to move reversely, and drive the shielding part to return to cover the air vent.

[0040] In a possible implementation, the main rod includes a rod body and a pressing part. The pressing part is connected to one end of the rod body located outside the shell, and the elastic member is sleeved on the outer wall of the rod body. The inner wall of the air vent has a positioning ring table, and the two ends of the elastic member abut against the positioning ring table and the pressing part, respectively.

[0041] By forming a pressing portion at the end of the rod body exposed outside the shell, the cross-sectional area of the pressing portion can be larger than that of the rod body, so that the wearer can press the pressing portion, and the stepped surface between the pressing portion and the rod body can form the abutting surface of the elastic member. By forming a positioning ring table on the inner wall surface of the air vent, the other end of the elastic member abuts on the positioning ring table, and as the main rod moves, the distance between the positioning ring table and the pressing portion changes, and the state of the elastic member changes accordingly.

[0042] In a possible implementation, the cross-sectional area of the pressing portion is larger than the area of the air vent.

[0043] By making the cross-sectional area of the pressing portion larger than the area of the air vent, the end surface of the pressing portion can abut on the outer surface of the shell, defining the limit position of the movement of the main rod into the shell, so as to prevent the main rod from being separated from the air vent.

[0044] In a possible implementation, the inner wall of the air vent is provided with at least one clamping structure, and the main rod can be clamped in or separated from the clamping structure.

[0045] By providing the clamping structure on the inner wall of the air vent, when the main rod is clamped in the clamping structure, the shielding portion can stay at a specific position, and when the main rod is separated from the clamping structure and continues to move into the shell, the shielding portion can move to the limit position farthest from the inner wall surface of the shell. By making the shielding portion stay at different positions, the air vent rate and air vent amount of the air vent are adjusted.

[0046] In a possible implementation, the at least one air vent includes a first air vent and a second air vent, and the area of the first air vent is smaller than that of the second air vent.

[0047] In a possible implementation, the shell is connected with an air vent switch, and the main rod of the air vent switch is located in the second air vent.

[0048] In a possible implementation, the inner wall surface of the shell is provided with a damping sheet, and the damping sheet covers the first air vent.

[0049] In a possible implementation, the at least one air vent switch includes a first air vent switch and a second air vent switch, the main rod of the first air vent switch is located in the first air vent, and the main rod of the second air vent switch is located in the second air vent.

[0050] In a possible implementation, the inner wall surface of the shell is provided with a sealing layer, the sealing layer surrounds the outer periphery of the damping sheet, and the air vent switch is closely attached to the sealing layer.

[0051] By arranging the sealing layer on the inner wall surface of the shell, the sealing layer encloses the outer periphery of the air leakage hole, which is equivalent to the air leakage hole being located in the recessed area enclosed by the sealing layer, the surface of the sealing layer and the surface of the damping sheet can be substantially flush, and at least part of the circumferential edge of the shielding part of the air leakage switch is tightly attached to the sealing layer. The force of the shielding part on the damping sheet and the force of the shielding part on the sealing layer work together to ensure that the air leakage hole is tightly blocked.

[0052] In a possible implementation, the earphone further comprises a loudspeaker, and the loudspeaker is arranged in the shell.

[0053] The shell has a sound outlet, and a front sound cavity is formed between the side of the loudspeaker facing the sound outlet and the shell, and a rear sound cavity is formed between the side of the loudspeaker facing away from the sound outlet and the shell, and the air leakage hole is in communication with the front sound cavity.

[0054] By making the air leakage hole in communication with the front sound cavity, the audio signal generated by the loudspeaker can be leaked outward through the air leakage hole, which can ensure the low-frequency effect of the loudspeaker and improve the sound quality of the earphone. Moreover, when the occlusion effect occurs in the ear canal, the low-frequency signal blocked in the front sound cavity can also be leaked outward through the air leakage hole, effectively reducing or eliminating the occlusion effect.

[0055] In a possible implementation, the air leakage hole is arranged on the shell at a position corresponding to the rear sound cavity.

[0056] For the case that the space of the front sound cavity is small and the position of the shell corresponding to the front sound cavity cannot meet the design requirements of the air leakage hole, by arranging the air leakage hole on the shell at a position corresponding to the rear sound cavity, since the space of the rear sound cavity is large and the area of the region of the shell corresponding to the rear sound cavity is large, the design requirements of the air leakage hole can be met. At this time, the rear sound cavity can be in communication with the front sound cavity to ensure that the gas in the front sound cavity can flow to the air leakage hole.

[0057] In a possible implementation, the earphone further comprises a microphone, and the microphone is arranged in the shell.

[0058] By arranging the microphone in the earphone, the microphone can receive noise in the external environment and process the noise signal to realize the noise reduction function of the earphone; and the microphone can also receive the low-frequency signal in the ear canal and process the low-frequency signal to reduce or eliminate the occlusion effect.

[0059] In a third aspect, the application provides a method for eliminating the occlusion effect of an earphone, applied to the earphone as described above, comprising:

[0060] Generating a detection signal according to the self-speech information generated in the external ear canal;

[0061] generate a first leakage signal and a second leakage signal according to the detection signal; wherein, if the detection signal is within a first threshold range, the detection signal is the first leakage signal; if the detection signal is within a second threshold range, the detection signal is the second leakage signal; a lower limit of the first threshold range is greater than or equal to an upper limit of the second threshold range, and the first threshold range corresponds to a range of air leakage amount when the air leakage switch of the earphone shields the corresponding air leakage hole, and the second threshold range corresponds to a range of air leakage amount when the air leakage switch of the earphone exposes at least part of the corresponding air leakage hole;

[0062] generate an occlusion signal according to the first leakage signal and the second leakage signal; wherein, the occlusion signal is a signal value after the first leakage signal is subtracted by the second leakage signal;

[0063] generate a compensation signal according to the occlusion signal, the compensation signal has the same amplitude and opposite phase with the occlusion signal, and is used to offset the occlusion signal.

[0064] The method for eliminating the occlusion effect of the earphone provided in the application can generate a detection signal when the wearer's self voice occurs in the external auditory canal, and determine whether the earphone is in a small leakage amount state or a large leakage amount state according to whether the signal value of the detection signal is within a first threshold range or a second threshold range. If the detection signal is within the first threshold range, the detection signal corresponds to the first leakage signal when the earphone is in the small leakage amount state; if the detection signal is within the second threshold range, the detection signal corresponds to the second leakage signal when the earphone is in the large leakage amount state. Then, the signal value obtained after the first leakage signal is subtracted by the second leakage signal is the occlusion signal in the ear canal, so that the compensation signal with the same amplitude and opposite phase with the occlusion signal can be generated by using the earphone, and the occlusion effect can be eliminated. This method can accurately detect the occlusion signal of the wearer, eliminate the occlusion effect of the wearer, generate different compensation signals, and achieve the purpose of adaptive elimination of the occlusion effect. BRIEF DESCRIPTION OF DRAWINGS

[0065] Figure 1 A structural schematic diagram of an earphone provided in an embodiment of the application;

[0066] Figure 2 An exploded view of Figure 1 ;

[0067] Figure 3 A sectional view of an earphone provided in an embodiment of the application;

[0068] Figure 4 A structural diagram of a shell (assembled with an air leakage switch) of the earphone in Figure 1 ;

[0069] Figure 5 A structural schematic diagram of an air leakage switch in Figure 4 ;

[0070] Figure 6 is a structural schematic view of the shell in Figure 4

[0071] Figure 7 is a partial sectional view at A-A in Figure 4

[0072] Figure 8 is a partial exploded view at A in Figure 6

[0073] Figure 9 is a structural schematic view of another earphone provided by an embodiment of the present application;

[0074] Figure 10 is a structural view of the shell (fitted with a deflation switch) of the earphone in Figure 9

[0075] Figure 11 is a partial enlarged view at B in Figure 10

[0076] Figure 12 is a structural schematic view of a third earphone provided by an embodiment of the present application;

[0077] Figure 13 is a structural view of the shell (fitted with a deflation switch) of the earphone in Figure 12

[0078] Figure 14 is a partial sectional view at B-B in Figure 13

[0079] Figure 15 is a structural schematic view of the deflation switch in Figure 13

[0080] Figure 16 is a flow schematic view of a method for eliminating the occlusion effect of an earphone provided by an embodiment of the present application.

[0081] BRIEF DESCRIPTION OF THE DRAWINGS

[0082] 100 - earphone; 101 - front sound cavity; 102 - rear sound cavity;

[0083] 110 - shell; 120 - ear sleeve; 130 - deflation switch; 140 - loudspeaker; 150 - battery; 160 - magnetic isolation plate; 170 - microphone;

[0084] 111 - sound outlet; 112 - deflation hole; 113 - mounting hole; 114 - damping sheet; 115 - sealing layer; 131 - transmission part; 132 - shielding part; 171 - FB microphone;

[0085] ​​​​​​​​1121 - first air vent; 1122 - second air vent; 1141 - first damping sheet; 1142 - second damping sheet; 1311 - connecting rod; 1312 - rotating plate; 1313 - main rod; 1314 - elastic member;

[0086] 110a - front shell; 110b - rear shell; 1101 - ear handle portion; 130a - first air vent switch; 130b - second air vent switch;

[0087] 1311a - operation part; 1312a - connecting end; 1312b - free end; 1313a - rod body; 1313b - pressing part. DETAILED DESCRIPTION

[0088] The terms used in the embodiment part of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application.

[0089] An earphone is a pair of conversion units that accepts electrical signals from a terminal such as a media player or a receiver, and converts them into audible sound waves using a speaker close to the ear. The earphone can be separated from the terminal and communicate with the terminal through a connection line or a wireless connection, and can listen to sound alone without affecting others.

[0090] From the communication mode between the earphone and the terminal, the earphone can include a wireless earphone and a wired earphone. The wired earphone is pluggable connected with the terminal through a connection line and a plug adapted to the end of the connection line. The wireless earphone, as the name implies, replaces the connection line with an electric wave, and the audio signal is sent from the transmitting end of the terminal to the earphone of the receiving end through the electric wave. Among them, the wireless earphone can include Bluetooth earphone, infrared earphone, 2.4G, etc., and the Bluetooth earphone can be, for example, a true wireless stereo (TWS) earphone.

[0091] From the wearing mode of the earphone, the earphone can be divided into a headset, an over-ear earphone, a semi-in-ear earphone, and an in-ear earphone. Among them, the semi-in-ear earphone and the in-ear earphone are inserted into the ear canal of the wearer, and thus a relatively closed space is formed between the ear canal wall of the wearer and the earphone. Especially the in-ear earphone which is deeply inserted into the external auditory canal of the wearer, the sound outlet segment of the earphone has good sealing with the ear canal wall of the wearer, has good sound insulation effect, and has good sound quality.

[0092] Due to the characteristics of semi-in-ear earphones and in-ear earphones that are inserted into the ear canal of the wearer, especially in-ear earphones that are inserted into the outer ear canal, the ear canal is in a relatively good sealed environment, when the wearer speaks, chews, swallows or exercises, the wall of the ear canal vibrates, generating low-frequency signals that propagate into the outer ear canal. Due to the blockage of the earphone, the low-frequency signals cannot escape, and then are transmitted to the eardrum and ultimately cause the sound pressure level of the cochlea to rise, resulting in an occlusion effect, causing the wearer to feel uncomfortable when listening to sound.

[0093] Semi-in-ear earphones and in-ear earphones are usually provided with a vent hole, which allows air to flow freely in the earphone and prevents pressure from building up. On the one hand, it prevents changes in sound quality and ensures the sound quality of the earphone. On the other hand, by installing a valve on the vent hole, the valve can be opened to increase the vent area of the earphone when necessary, which can reduce the occlusion effect and prevent the wearer from feeling uncomfortable when listening to sound. However, the structure of the existing valve is relatively complex, and it is difficult to implement in small earphones (such as TWS earphones), and the stability is poor.

[0094] In other solutions, the occlusion effect can also be reduced or eliminated by detecting the speech state or motion state of the wearer and calling a filter to process the sound signal. However, this processing method cannot remove the occlusion effect specifically according to the individual's occlusion state, and since the occlusion states of individuals differ greatly, this processing method cannot effectively eliminate the occlusion effect.

[0095] To this end, the embodiments of the present application provide an earphone and a method for eliminating the occlusion effect of the earphone. By providing a vent switch on the earphone, the vent switch is controlled to fully expose or partially expose the vent hole when needed (when the occlusion effect occurs), thereby increasing the venting amount of the earphone and reducing or even eliminating the occlusion effect. The method for eliminating the occlusion effect of the earphone uses the low-frequency leakage signal obtained by the wearer operating the vent switch to accurately detect the individual's occlusion signal and specifically eliminate the individual's occlusion effect, thereby generating a corresponding different compensation signal and achieving the purpose of adaptive elimination of the occlusion effect.

[0096] The specific structure of the earphone and the method for eliminating the occlusion effect of the earphone will be described in detail below with reference to the drawings and different embodiments.

[0097] Embodiment one

[0098] Figure 1 A structural diagram of an earphone provided by the embodiments of the present application is shown in the figure; Figure 2 is Figure 1 is an exploded view. Referring to Figure 1 and Figure 2 , this embodiment takes an in-ear earphone 100 as an example for illustration. It can be understood that the earphone 100 of this embodiment can also be a semi-in-ear earphone.

[0099] The earphone 100 comprises a housing 110, which can comprise a front shell 110a and a rear shell 110b. The front shell 110a refers to a part of the earphone 100 close to the ear canal of the wearer in the wearing state, and the rear shell 110b is opposite to the front shell 110a and is located on the side of the earphone 100 away from the ear canal of the wearer. The front shell 110a and the rear shell 110b can be mutually buckled to form a whole, and an accommodating space is formed inside the housing 110. For earphones 100 with different appearances, the rear shell 110b can comprise an ear stem part 1101 (as shown in Figure 1 The rear shell 110b can also not comprise the ear stem part 1101.

[0100] Referring to Figure 1 For an in-ear earphone, the earphone 100 can further comprise an ear sleeve 120, which extends into the external ear canal of the wearer and contacts the ear canal wall. The material of the ear sleeve 120 can be a flexible material such as silicone or rubber, which can improve the comfort of the wearer wearing the earphone 100. As shown in Figure 2 The front end of the housing 110 close to the ear canal of the wearer, for example, the front shell 110a, has a sound outlet 111. The earphone 100 transmits audio signals to the ear canal of the wearer through the sound outlet 111. The ear sleeve 120 can be installed on the sound outlet 111.

[0101] For a semi-in-ear earphone, the external structure of the earphone 100 can only consist of the housing 110. The front end of the housing 110, for example, the front end of the front shell 110a facing the ear canal of the wearer, is inserted into the external ear canal.

[0102] Referring to Figure 2 The housing 110 is provided with a pressure relief hole 112, which communicates the accommodating space in the housing 110 with the outside. The pressure relief hole 112 allows air to flow freely in the housing 110, avoiding the accumulation of pressure in the housing 110, so as to avoid affecting the sound quality of the earphone 100 and ensuring the low-frequency effect of the earphone 100. In addition, the housing 110 is further connected with a pressure relief switch 130, which is used to control the opening and closing state of the pressure relief hole 112 and adjust the pressure relief amount of the pressure relief hole 112. While ensuring the low-frequency effect of the earphone 100, the pressure relief switch 130 can be controlled to increase the pressure relief amount of the pressure relief hole 112 when necessary (for example, when the occlusion effect occurs in the ear canal), so as to timely weaken or eliminate the occlusion effect.

[0103] The air release switch 130 can include a transmission part 131 and a shielding part (not shown in the figure). The transmission part 131 passes through the inside and outside of the shell 110. One end of the transmission part 131 extends outside the shell 110, and the other end is located inside the shell 110. The shielding part is connected to the end of the transmission part 131 inside the shell 110. The wearer can hold the end of the transmission part 131 exposed outside the shell 110 to operate the air release switch 130, move the shielding part, cover the air release hole 112 with the shielding part, or expose at least part of the air release hole 112 to adjust the air release state of the air release hole 112.

[0104] According to the structure design of the shell 110 and the space layout inside the shell 110, the air release hole 112 can be arranged on the front shell 110a or the rear shell 110b. Figure 2 An exemplary structure in which the air release hole 112 is arranged on the front shell 110a is shown. In addition, in order to facilitate the outward air release of the air release hole 112, when the earphone 100 is worn on the ear of the wearer, the air release hole 112 can be located on the shell 110 exposed outside the ear canal. The air release hole 112 is directly connected to the outside world, which can ensure smooth air release. Similarly, the part of the transmission part 131 of the air release switch 130 extending outside the shell 110 should also be exposed outside the ear canal, so that the wearer can hold the transmission part 131.

[0105] Exemplarily, the part of the transmission part 131 extending outside the shell 110 can be as far away from the ear canal of the wearer as possible to reserve enough operation space. Continuing to refer to Figure 2 As an embodiment, the air release hole 112 arranged on the shell 110 can include a first air release hole 1121 and a second air release hole 1122. The first air release hole 1121 can be used as a conventional air release hole 112 of the earphone 100, mainly for connecting the inside and outside of the shell 110 to ensure the free flow of air in the shell 110 and protect the low-frequency effect of the earphone 100. The second air release hole 1122 can be used as an additional air release hole 112 on the shell 110, mainly for increasing the air release area of the air release hole 112 to timely release pressure and reduce or eliminate the occlusion effect in the ear canal.

[0106] The pressure release switch is mainly used to adjust the air release amount of the air release hole 112 on the shell 110. When the occlusion effect occurs in the ear canal, the pressure release switch is operated to increase the air release amount of the earphone 100 to reduce or eliminate the occlusion effect. Therefore, the pressure release switch should at least be able to adjust the opening and closing state of the additional second air release hole 1122. For example, the first air release hole 1121 remains in an open state. When the occlusion effect occurs in the ear canal, the second air release hole 1122 is partially or completely exposed by operating the pressure release switch to increase the air release amount of the earphone 100.

[0107] Alternatively, the air leakage switch 130 can also adjust the opening and closing state of the conventional first air leakage hole 1121, the air leakage switch 130 can switch between adjusting the opening and closing state of the first air leakage hole 1121 and adjusting the opening and closing state of the second air leakage hole 1122, or the air leakage switch 130 can adjust the opening and closing state of the first air leakage hole 1121 and the opening and closing state of the second air leakage hole 1122 at the same time.

[0108] For example, as a conventional air leakage hole 112, the first air leakage hole 1121 has a smaller area, and in the case that the second air leakage hole 1122 is covered, the first air leakage hole 1121 keeps a small air flow between the inside and outside of the shell 110 to ensure the low-frequency effect of the earphone 100. As an additional air leakage hole 112, the second air leakage hole 1122 has a larger area, which is larger than the area of the first air leakage hole 1121, and in the case that the second air leakage hole 1122 is partially exposed or completely exposed, the air leakage area of the air leakage hole 112 can be increased, the air leakage amount of the earphone 100 can be increased, and the occlusion effect can be effectively reduced or eliminated.

[0109] As another embodiment, only one air leakage hole 112 can be provided on the shell 110, and by operating the air leakage switch 130, the opening and closing state of the air leakage hole 112 can be adjusted, for example, the air leakage hole 112 is completely covered, partially exposed or completely exposed, the effective air leakage area of the air leakage hole 112 is adjusted, and the air leakage amount of the earphone 100 is adjusted. For example, in the normal case, the air leakage switch 130 is operated to partially expose or completely cover the air leakage hole 112 to ensure the low-frequency effect of the earphone 100; when the occlusion effect occurs in the ear canal, the air leakage switch 130 is operated to completely expose the air leakage hole 112 to increase the air leakage area of the air leakage hole 112 and reduce or eliminate the occlusion effect.

[0110] Hereinafter, the air leakage hole 112 provided on the shell 110 will be mainly described by taking the first air leakage hole 1121 and the second air leakage hole 1122 as examples.

[0111] Figure 3 The cross-sectional view of the earphone provided in the embodiments of the present application is shown in FIG. 1. Referring to FIG. 1, the earphone 100 includes a shell 110, a sound outlet 111, a sound inlet 112, an air leakage switch 130, and a speaker 140. Figure 3 As shown in FIG. 1, the accommodation space inside the shell 110 of the earphone 100 is provided with the speaker 140, and the side of the speaker 140 facing the sound outlet 111 is the sound outlet side of the speaker 140. The speaker 140 converts the received electrical signal into a sound signal, and the sound signal is transmitted from the sound outlet side of the speaker 140 to the ear canal of the wearer. Among them, the sound outlet side of the speaker 140 (the side of the speaker 140 facing the sound outlet 111) and the shell 110 form a front sound cavity 101, and the back side of the speaker 140 (the side of the speaker 140 away from the sound outlet 111) and the shell 110 form a rear sound cavity 102.

[0112] In combination with Figure 2 and Figure 3As shown, the air vent 112 on the shell 110 is in communication with the front sound cavity 101, on one hand, the front sound cavity 101 can be kept in a state of a small amount of air leakage, for example, the first air vent 1121 is exposed and the second air vent 1122 is covered, the audio signal generated by the loudspeaker 140 has a small amount of leakage, which can make the earphone 100 have better sound quality effect and better low-frequency sound effect. On the other hand, when the occlusion effect is generated in the ear canal, the low-frequency signal generated by the ear canal wall is blocked in the front sound cavity 101, at this time, the amount of air leakage of the front sound cavity 101 can be increased, for example, the second air vent 1122 is also in an exposed state by operating the pressure relief switch, so that the low-frequency signal generated by the ear canal wall is leaked to the external environment, and the occlusion effect is reduced or eliminated.

[0113] Due to the limited space in the shell 110 of the earphone 100, the loudspeaker 140 is usually arranged as close to the sound outlet 111 as possible, especially in wireless earphones 100 such as Bluetooth earphones 100, the back side of the loudspeaker 140 is also provided with devices such as a battery 150, and sufficient space needs to be reserved for these components. Therefore, the space of the front sound cavity 101 is usually small, and the area of the region on the shell 110 corresponding to the front sound cavity 101 is also small, and it is difficult to design the air vent 112 on the part of the shell 110 corresponding to the front sound cavity 101, especially for the double air vent scheme including the first air vent 1121 and the second air vent 1122.

[0114] Therefore, in the embodiment, the air vent 112 can be arranged on the part of the shell 110 corresponding to the rear sound cavity 102, and the area of the region on the shell 110 corresponding to the rear sound cavity 102 is larger, which meets the space requirement of the air vent 112, especially for the double air vent scheme. At this time, for the loudspeaker 140 which separates the space in the shell 110 into the front sound cavity 101 and the rear sound cavity 102 which are independent of each other, a communication hole (not shown in the figure) can be formed on the loudspeaker 140, and the front sound cavity 101 and the rear sound cavity 102 are communicated through the communication hole, so that the air in the front sound cavity 101 flows to the rear sound cavity 102 through the communication hole, and then leaks to the external environment through the air vent 112.

[0115] In addition, the space where the rear sound cavity 102 is located can also be provided with a magnetic shield plate 160, which will be described below with reference to Figure 3 As shown, the magnetic shield plate 160 can be arranged between the loudspeaker 140 and the battery 150, and the magnetic shield plate 160 is used to isolate the magnetic leakage part of the loudspeaker 140, so as to avoid affecting other devices (such as the battery 150) in the rear sound cavity 102.

[0116] Continuing to refer to Figure 3As shown, for the earphone 100 with active noise reduction function, the accommodating space in the earphone 100 housing 110 can also be provided with a microphone 170, which can collect noise signals and emit reverse-phase sound waves to offset the noise. Among them, the microphone 170 provided in the earphone 100 can include a feed forward (FF) microphone 170 and a feed back (FB) microphone 170.

[0117] The FF microphone (not shown in the figure) is usually arranged away from the ear canal of the wearer, and can be arranged on the rear shell 110b (such as the ear stem part 1101) so as to quickly receive noise signals in the external environment and improve the noise processing speed. Figure 3 The microphone 170 shown in the figure can be a FB microphone 171, which is usually arranged close to the ear canal of the wearer, for example, the FB microphone 171 can be arranged at the sound outlet 111 of the front shell 110a. The FB microphone 171 can process noise signals missed by the FF microphone, improve the noise reduction effect of the earphone 100, and because the FB microphone 171 is usually arranged in the front sound cavity 101, it can better receive low-frequency signals generated by the vibration of the ear canal wall and process the low-frequency signals to weaken or eliminate the occlusion effect.

[0118] In the embodiment, as shown in the figure, Figure 3 The microphone 170 arranged in the earphone 100 can only include the FB microphone 171, or the microphone 170 can include the FB microphone 171 and the FF microphone. In other embodiments, the microphone 170 arranged in the earphone 100 can also only include the FF microphone, at this time, the low-frequency signals generated by the occlusion effect can be transmitted to the rear sound cavity 102 through the communication hole on the loudspeaker 140, and received by the FF microphone in the rear sound cavity 102 and processed by the FF microphone.

[0119] The specific structure and working mode of the air release switch 130 of the embodiment will be described in detail below in combination with the housing 110.

[0120] Figure 4 For the structure diagram of the housing (provided with the air release switch) of the earphone in Figure 1 For the structure diagram of the air release switch in Figure 5 For the structure diagram of the housing in Figure 4 For the structure diagram of the housing in Figure 6 For the structure diagram of the housing in Figure 4 For the structure diagram of the housing in Figure 7 For the partial sectional view of A-A in Figure 4 For the partial sectional view of A-A in

[0121] For the partial sectional view of A-A in Figure 4As shown, in the embodiment, the casing 110 is provided with an air release switch 130, the air release switch 130 is rotatably connected to the casing 110, and the wearer of the earphone 100 can adjust the air release area of the air release hole 112 by rotating the air release switch 130 to expose or cover the air release hole 112 or even expose part of the air release hole 112.

[0122] Referring to Figure 5 As shown, the transmission part 131 of the air release switch 130 includes a connecting rod 1311 and a rotating plate 1312, the rotating plate 1312 is connected to one end of the connecting rod 1311, and the other end of the connecting rod 1311 is provided with an operation part 1311a. Exemplarily, the air release switch 130 can be a one-piece component, or the connecting rod 1311 and the rotating plate 1312 of the air release switch 130 can also be separately manufactured, and the connecting rod 1311 and the rotating plate 1312 are connected together by welding, bonding or connecting members such as screws, rivets, etc. The air release switch 130 can be made of metal or alloy material, or can also be made of plastic material with good hardness and high strength.

[0123] Referring to Figure 6 As shown, the casing 110 is provided with a mounting hole 113 located at the side of the air release hole 112, the connecting rod 1311 passes through the mounting hole 113, one end of the connecting rod 1311 provided with the operation part 1311a extends out of the casing 110, and the rotating plate 1312 is located in the casing 110. In combination with Figure 5 and Figure 7 As shown, the connecting rod 1311 passes through the mounting hole 113 in the casing 110, and the operation part 1311a of the connecting rod 1311 is exposed outside the casing 110, so that the wearer of the earphone 100 can hold the operation part 1311a to rotate the connecting rod 1311, and the connecting rod 1311 drives the rotating plate 1312 to rotate, when the rotating plate 1312 rotates to different positions, the air release hole 112 can be exposed, covered or partially covered to adjust the opening and closing state of the air release hole 112.

[0124] The two ends of the rotating plate 1312 are the connecting end 1312a and the free end 1312b, respectively. The connecting end 1312a of the rotating plate 1312 is connected with the connecting rod 1311. During the rotation of the rotating plate 1312, the free end 1312b can correspond to cover the air vent hole 112. The shielding part 132 is arranged at the free end of the rotating plate 1312. The length between the two ends of the rotating plate 1312 corresponds to the radius of rotation. The torque of the free end 1312b of the rotating plate 1312 rotating around the connecting rod 1311 is large. In this way, the connecting rod 1311 is rotated by a small angle, so that the shielding part 132 located at the free end 1312b of the rotating plate 1312 has a large displacement. The air release switch 130 is more easy to adjust the opening and closing state of the air vent hole 112. Moreover, by making the rotating plate 1312 have a large torque, the exposure area of a single air vent hole 112 can be more flexible and more accurate. The air release switch 130 can achieve the effect of accurately exposing part of the air vent hole 112.

[0125] In combination with Figure 5 and Figure 7 As shown in the drawings, the shielding part 132 of the free end 1312b of the rotating plate 1312 can completely cover the air vent hole 112 in the orthographic projection on the air vent hole 112, so that the shielding part 132 can completely cover the air vent hole 112, and the air vent hole 112 can be in a completely blocked state. For the case that the shell 110 is provided with a smaller first air vent hole 1121 and a larger second air vent hole 1122, the area of the shielding part 132 can be larger than the area of the second air vent hole 1122. For example, the cross-sectional shape of the shielding part 132 and the second air vent hole 1122 is circular, and the radius of the shielding part 132 can be larger than the radius of the second air vent hole 1122.

[0126] For example, the edge part of the shielding part 132 close to the free end 1312b of the rotating plate 1312 can extend out of the rotating plate 1312. On the basis of ensuring that the shielding part 132 can completely cover the air vent hole 112, the width of the rotating plate 1312 is reduced, the volume of the air release switch 130 is reduced, the space occupied by the air release switch 130 is small, and the arrangement of the air release switch 130 in the shell 110 is facilitated.

[0127] In addition, for example, the main body structure of the connecting rod 1311 of the air release switch 130 is cylindrical. In combination with Figure 5 and Figure 7As shown, the exposed end of the connecting rod 1311 can be partially removed, for example, the structure near the cylindrical surface of the end region of the connecting rod 1311 can be removed, and the side walls on both sides of the operating portion 1311a can be processed into flat surfaces to form a part that is convenient for the wearer of the earphone 100 to hold. Moreover, the volume of the operating portion 1311a exposed outside the shell 110 is also reduced, and the impact on the appearance of the earphone 100 is small.

[0128] In combination Figure 6 and Figure 7 As shown, in some embodiments, the mounting hole 113 on the shell 110 for mounting the air release switch 130 can be arranged on the central axis of the line between the centers of the first air release hole 1121 and the second air release hole 1122, so that the center of the connecting rod 1311 of the air release switch 130 is located on the central axis of the line between the centers of the first air release hole 1121 and the second air release hole 1122. In this way, the distance between the center of the connecting rod 1311 of the air release switch 130 and the center of the first air release hole 1121 is equal to the distance between the center of the connecting rod 1311 and the center of the second air release hole 1122, and rotating the connecting rod 1311 can drive the shielding portion 132 of the rotating plate 1312 to cover any one of the first air release hole 1121 and the second air release hole 1122.

[0129] In actual applications, if the distance between the first air release hole 1121 and the second air release hole 1122 is large and meets the design requirements of the mounting hole 113, the mounting hole 113 can be arranged on the line between the first air release hole 1121 and the second air release hole 1122, that is, the connecting rod 1311 of the air release switch 130 is located on the line between the first air release hole 1121 and the second air release hole 1122. Referring to Figure 6 and Figure 7 As shown, if the distance between the first air release hole 1121 and the second air release hole 1122 is small and cannot meet the design requirements of the mounting hole 113, the mounting hole 113 can be arranged on the side of the region where the first air release hole 1121 and the second air release hole 1122 are located, that is, the connecting rod 1311 of the air release switch 130 is located on the side of the first air release hole 1121 and the second air release hole 1122.

[0130] For example, the first air vent 1121 can be kept open, and the air release switch 130 is mainly used to adjust the opening and closing state of the second air vent 1122. Normally, the shielding part 132 of the air release switch 130 covers the second air vent 1122, and the air in the shell 110 keeps flowing through the first air vent 1121, thereby ensuring the sound quality of the earphone 100. When the occlusion effect occurs in the ear canal, the wearer of the earphone 100 rotates the connecting rod 1311 of the air release switch 130 by holding the operation part 1311a, and drives the shielding part 132 to move to expose the second air vent 1122. The air in the shell 110 is released through the first air vent 1121 and the second air vent 1122, so as to weaken or even eliminate the occlusion effect.

[0131] Alternatively, the air release switch 130 can also control the opening and closing state of the first air vent 1121. For example, normally, the shielding part 132 of the air release switch 130 covers the second air vent 1122, and the first air vent 1121 keeps open. At this time, the air in the shell 110 keeps flowing through the first air vent 1121. When the occlusion effect occurs in the ear canal and generates a weak low-frequency signal, the wearer of the earphone 100 can rotate the air release switch 130 to cover the first air vent 1121 and expose the second air vent 1122, so as to appropriately increase the air release area of the earphone 100 and release the low-frequency signal. When the occlusion effect occurs in the ear canal and generates a strong low-frequency signal, the air release switch 130 can be rotated to expose the first air vent 1121 and the second air vent 1122 at the same time, so as to further increase the air release area of the earphone 100 and effectively weaken or even eliminate the occlusion effect.

[0132] For the case that the first air vent 1121 keeps open and the air release switch 130 is only used to control the opening and closing state of the second air vent 1122, in another embodiment, the mounting hole 113 for mounting the air release switch 130 on the shell 110 can also be arranged on the side of the second air vent 1122 away from the first air vent 1121. Here, it can refer to the 180° area of the 360° area of the second air vent 1122 away from the first air vent 1121. The distance between the center of the mounting hole 113 and the center of the second air vent 1122 is small. The connecting rod 1311 of the air release switch 130 is located in the mounting hole 113. During the process that the connecting rod 1311 drives the rotating plate 1312 to rotate, the shielding part 132 located at the free end 1312b of the rotating plate 1312 can only cover the second air vent 1122. At this time, the wearer of the earphone 100 can switch the air release switch 130 between the state of covering the second air vent 1122 and the state of exposing the second air vent 1122 by rotating the operation part 1311a of the air release switch 130.

[0133] Exemplarily, the centers of the mounting hole 113, the first air release hole 1121 and the second air release hole 1122 can be located on the same straight line, i.e., the mounting hole 113 is arranged on the other side of the second air release hole 1122 opposite to the first air release hole 1121. In this way, as viewed from the outside of the earphone 100, the operation part 1311a of the air release switch 130 is on the same straight line with the first air release hole 1121 and the second air release hole 1122.

[0134] For the mode that the air release switch 130 covers or exposes the air release hole 112 by rotating the rotating plate 1312, in order to enable the blocking part 132 of the air release switch 130 to be positioned accurately and ensure that the air release hole 112 is completely covered, in the embodiment, a positioning part (not shown in the figure) can also be arranged on the inner wall surface of the shell 110. The positioning part is, for example, a positioning column protruding on the inner wall surface of the shell 110. In the rotating process of the rotating plate 1312, the blocking part 132 on the rotating plate 1312 can be limited to the position covering the air release hole 112 by the stopping action of the positioning part, so as to ensure that the blocking part 132 completely covers the air release hole 112.

[0135] For the case that the blocking part 132 of the air release switch 130 can be switched between the state of covering the first air release hole 1121 and the state of covering the second air release hole 1122, as an implementation mode, only one positioning part can be arranged on the inner wall surface of the shell 110. The positioning part is located on the opposite side of the first air release hole 1121 and the second air release hole 1122, i.e., the positioning part is arranged in the region close to both the first air release hole 1121 and the second air release hole 1122. For example, the center of the positioning part can be located on the central axis of the connecting line between the first air release hole 1121 and the second air release hole 1122.

[0136] In this way, taking the case that the blocking part 132 of the air release switch 130 abuts against the first side of the positioning part and covers the second air release hole 1122 as an example, the air release switch 130 is rotated in the direction away from the first air release hole 1121 until the blocking part 132 abuts against the second side of the positioning part opposite to the first side. At this time, the blocking part 132 is located at the position covering the first air release hole 1121. Similarly, taking the case that the blocking part 132 of the air release switch 130 abuts against the second side of the positioning part and covers the first air release hole 1121 as an example, the air release switch 130 is rotated in the direction away from the second air release hole 1122 until the blocking part 132 abuts against the first side of the positioning part. At this time, the blocking part 132 is located at the position covering the second air release hole 1122.

[0137] As another implementation, the positioning portions provided on the inner wall surface of the shell 110 can include a first positioning portion and a second positioning portion, the first positioning portion is provided on the side of the first air release hole 1121, and the second positioning portion is provided on the side of the second air release hole 1122. For example, the first positioning portion is located in the 180° area of the first air release hole 1121 away from the second air release hole 1122, and the second positioning portion is located in the 180° area of the second air release hole 1122 away from the first air release hole 1121. In this way, the air release switch 130 can rotate back and forth between the first positioning portion and the second positioning portion, when the air release switch 130 rotates to abut against the first positioning portion, the shielding portion 132 thereof covers the first air release hole 1121, and when the air release switch 130 rotates to abut against the second positioning portion, the shielding portion 132 thereof covers the second air release hole 1122.

[0138] When the connecting rod 1311 of the aforementioned air release switch 130 is provided on the side of the second air release hole 1122 away from the first air release hole 1121, the shielding portion 132 of the air release switch 130 is only used to cover the second air release hole 1122, at this time, only one positioning portion can be provided on the side of the second air release hole 1122, when the air release switch 130 rotates in one direction to abut against the positioning portion, the shielding portion 132 thereof covers the second air release hole 1122, and when the air release switch 130 moves away from the positioning portion by a certain distance in the opposite direction, the second air release hole 1122 can be completely exposed. In order to facilitate the operation and positioning of the air release switch 130, two positioning portions can also be respectively provided on the two sides of the second air release hole 1122, and the air release switch 130 can rotate back and forth between the two positioning portions to cover or expose the second air release hole 1122.

[0139] In addition, when only one air release hole 112 is provided on the shell 110, the area of the air release hole 112 can be appropriately increased to effectively weaken or even eliminate the occlusion effect when the air release hole 112 is completely exposed. Corresponding to the air release hole 112, only one air release switch 130 can be provided on the shell 110, and the air release switch 130 can adjust the size of the exposed area of the air release hole 112. In this regard, the positioning portion provided on the side of the air release hole 112 can be matched with the air release switch 130, a plurality of positioning portions can be provided at intervals on the side of the air release hole 112, and the exposed area of the air release hole 112 is different when the air release switch 130 abuts against different positioning portions. At this time, the air release switch 130 and the positioning portion can be, for example, a mutually matched elastic detent structure, the positioning portion can limit the air release switch 130 at this position, and when a certain force is applied, the air release switch 130 can rotate away from this position to abut against the next positioning portion.

[0140] Figure 8 For Figure 6 Partial exploded view of A in FIG. 8. Combined with Figure 6 And Figure 8As shown, in actual application, the air vent 112 is usually not completely open, and a damping sheet 114 can be covered on the air vent 112. The damping sheet 114 can be arranged on the inner wall surface of the shell 110 and correspond to the air vent 112. For example, the outer edge region of the damping sheet 114 can be bonded to the inner wall surface of the air vent 112 periphery, so as to fix the damping sheet 114 on the inner wall surface of the shell 110, and cover the air vent 112 with the damping sheet 114.

[0141] The damping sheet 114 can be made of woven cloth, nylon or other materials, or the damping sheet 114 can also be a metal mesh with fine mesh. The damping sheet 114 can adjust the acoustic resistance and improve the sound quality of the earphone 100. The material, density and thickness of the damping sheet 114 have certain influence on sound. In addition, it can be understood that covering the air vent 112 with the damping sheet 114 with fine mesh can also hinder dust, hair and other foreign matters in the external environment from entering the shell 110, and can play a good dustproof effect.

[0142] In combination with Figure 7 and Figure 8 As shown, since the damping sheet 114 is covered on the air vent 112, the shielding part 132 of the air release switch 130 can be attached to the damping sheet 114. The material of the damping sheet 114 determines that it has a certain deformation ability, so that the shielding part 132 of the air release switch 130 can be attached closely, and the sealing effect of the shielding part 132 on the air vent 112 is guaranteed. As the edge of the damping sheet 114 extends beyond the edge of the air vent 112, the shielding part 132 can completely cover the damping sheet 114 on the basis of completely covering the air vent 112, or the size of the shielding part 132 can be slightly smaller than the size of the damping sheet 114.

[0143] Continuing to refer to Figure 8 As shown, for the case that the air vent 112 arranged on the shell 110 includes the first air vent 1121 and the second air vent 1122, the damping sheet 114 arranged on the inner wall surface of the shell 110 can include the first damping sheet 1141 and the second damping sheet 1142. The first damping sheet 1141 covers the first air vent 1121, and the second damping sheet 1142 covers the second air vent 1122. For the case that the area of the first air vent 1121 is smaller than the area of the second air vent 1122, correspondingly, the area of the first damping sheet 1141 can also be smaller than the area of the second damping sheet 1142, or, as Figure 8 As shown, in order to facilitate the processing of the damping sheet 114 and improve the production efficiency of the damping sheet 114, the shape and size of the first damping sheet 1141 and the second damping sheet 1142 can also be completely the same.

[0144] In addition, the sound resistance of the first damping sheet 1141 covering the conventional first air vent 1121 can be larger, and the sound resistance of the second damping sheet 1142 covering the added second air vent 1122 can be smaller. For example, the density and thickness of the first damping sheet 1141 can be greater than those of the second damping sheet 1142. In this way, the first air vent 1121 can be ensured to have a small air leakage amount, and the first air vent 1121 keeps the air in the shell 110 flowing to ensure the low-frequency effect of the earphone 100 in the case where the air vent switch 130 covers the second air vent 1122; the second air vent 1122 has a large air leakage amount, and the air vent switch 130 opens the second air vent 1122 in time to release the low-frequency signal in the earphone 100 when the occlusion effect occurs in the ear canal.

[0145] Continuing to refer to Figure 8 As shown in the figure, in some embodiments, the inner wall surface of the shell 110 can also be provided with a sealing layer 115 surrounding the outer periphery of the air vent 112, i.e., the air vent 112 is located in the recessed area surrounded by the sealing layer 115, and the sealing layer 115 exposes the mounting area of the damping sheet 114. The sealing layer 115 is, for example, a flexible layer such as a silicone layer or a rubber layer. The surface of the sealing layer 115 can be substantially flush with the surface of the damping sheet 114. When the air vent switch 130 is rotated to its covering part 132 covering the air vent 112, the edge of the covering part 132 can be tightly attached to the sealing layer 115 to ensure that the covering part 132 tightly seals the air vent 112.

[0146] For example, the sealing layer 115 can be integrally formed on the inner wall surface of the shell 110 by a two-color injection molding process or the like, or the sealing layer 115 can be separately processed and formed, and the sealing layer 115 is fixed on the inner wall surface of the shell 110 by bonding or the like.

[0147] Figure 8 As shown in the figure, the sealing layer 115 surrounds an integral recessed area, and the first air vent 1121 and the second air vent 1122 are both located in the recessed area. The circumferential edge of the covering part 132 of the air vent switch 130 cannot be tightly attached to the sealing layer 115 at all positions. At this time, the air vent switch 130 mainly relies on the tightly attached covering part 132 and the damping sheet 114 to ensure that the air vent 112 is tightly sealed.

[0148] In other embodiments, the sealing layer 115 also completely encloses each part of the periphery of the first air release hole 1121 and the second air release hole 1122, that is, the sealing layer 115 can form two recessed areas corresponding to the first air release hole 1121 and the second air release hole 1122, respectively, and the first damping sheet 1141 and the second damping sheet 1142 are located in the two recessed areas and cover the corresponding air release holes 112. At this time, each part of the circumferential edge of the shielding part 132 of the air release switch 130 can be closely attached to the sealing layer 115, and the air release holes 112 can be tightly blocked by relying on the sealing layer 115.

[0149] Embodiment Two

[0150] Figure 9 Another structural schematic diagram of an earphone provided in the embodiment of the present application; Figure 10 For Figure 9 a structural diagram of the shell (equipped with an air release switch) of the earphone in Figure 11 For Figure 10 a local enlarged view of B in

[0151] Referring to Figure 9 , the present embodiment mainly aims at an earphone 100 adopting a double air release hole scheme, that is, the air release hole 112 provided on the shell 110 of the earphone 100 includes a first air release hole 1121 and a second air release hole 1122, and, similarly to Embodiment One, the area of the first air release hole 1121 can be smaller than the area of the second air release hole 1122. In addition, as shown in Figure 8 , the inner wall surface of the shell 110 can be provided with a first damping sheet 1141 covering the first air release hole 1121 and a second damping sheet 1142 covering the second air release hole 1122, which will not be described herein again.

[0152] As shown in Figure 9 and Figure 10 , the specific structure of the air release switch 130 in the present embodiment is similar to that of the air release switch 130 in Embodiment One, and the structure of the air release switch 130 can refer to Figure 5 , both of which are achieved by rotating the operation part 1311a on the connecting rod 1311 of the air release switch 130 of the earphone 100 by the wearer of the earphone 100 to drive the rotation plate 1312 to rotate, and the rotation plate 1312 can be switched between the state of covering the air release hole 112 and the state of exposing the air release hole 112.

[0153] Different from Embodiment One, the shell 110 of the earphone 100 in the present embodiment is provided with two air release switches 130, namely a first air release switch 130a and a second air release switch 130b, the first air release switch 130a is used to control the opening and closing state of the first air release hole 1121, and the second air release switch 130b is used to control the opening and closing state of the second air release hole 1122.

[0154] Referring toFigure 11 As shown in the figure, the first air release switch 130a covers the first air release hole 1121 and the second air release switch 130b covers the second air release hole 1122. At this time, the interior of the housing 110 is in a well-sealed environment, and the earphone 100 can obtain excellent low-frequency effects. Figure 11 In addition to the state shown in FIG, according to actual needs, the first air leakage switch 130a may expose the first air leakage hole 1121 and the second air leakage switch 130b may cover the second air leakage hole 1122, so as to maintain air flow in the housing 110 through the first air leakage hole 1121 and ensure the sound quality of the earphone 100; or the first air leakage switch 130a may cover the first air leakage hole 1121 and the second air leakage switch 130b may expose the second air leakage hole 1122, slightly increasing the air leakage volume of the air leakage hole 112, which can be used for scenarios where a small amount of low-frequency signals generated in the earphone 100 need to be discharged; or the first air leakage switch 130a may expose the first air leakage hole 1121 and the second air leakage switch 130b may expose the second air leakage hole 1122, so that the air leakage volume of the air leakage hole 112 is large, which can promptly and quickly discharge the low-frequency signals in the housing 110, thereby weakening or even eliminating the occlusion effect.

[0155] Combine Figure 9 and Figure 11 As shown, since two air release switches 130 are to be installed on the housing 110, both of the air release switches 130 are of a rotatable structure and need to occupy a certain space. When the distance between the first air release hole 1121 and the second air release hole 1122 is small, in order to reserve sufficient rotation space for the first air release switch 130a and the second air release switch 130b, the connecting rod 1311 of the first air release switch 130a can be arranged on the side of the first air release hole 1121 facing away from the second air release hole 1122, and the connecting rod 1311 of the second air release switch 130b can be arranged on the side of the second air release hole 1122 facing away from the first air release hole 1121. In this way, the overlapping area between the rotation area of ​​the first air release switch 130a and the rotation area of ​​the second air release switch 130b is small or even non-existent, thereby avoiding mutual interference between the first air release switch 130a and the second air release switch 130b.

[0156] For example, the connecting rod 1311 of the first air release switch 130 a , the connecting rod 1311 of the second air release switch 130 b , the first air release hole 1121 , and the second air release hole 1122 may be located in a straight line.

[0157] The other structures, functions and working principles of the earphone 100 of this embodiment are similar to those of the first embodiment and will not be described again here.

[0158] Example 3

[0159] Figure 12A third earphone structure diagram provided by the embodiment of the present application; Figure 13 A Figure 12 structure diagram of the earphone shell (equipped with a deflation switch) in Figure 14 A Figure 13 partial sectional view at B-B in Figure 15 A Figure 13 structure diagram of the deflation switch in

[0160] Referring to Figure 12 , the same as the first embodiment, the earphone 100 of the present embodiment is also provided with a deflation hole 112 on the shell 110, and a deflation switch 130 is movably connected to the shell 110, which is used to control the opening and closing state of the deflation hole 112. As shown in Figure 13 , the structure of the deflation switch 130 of the present embodiment is different from that of the deflation switch 130 of the first embodiment, and the way of adjusting the deflation amount of the deflation hole 112 is also different.

[0161] As shown in Figure 13 and Figure 14 , in the present embodiment, the deflation switch 130 is directly installed in the deflation hole 112 which needs to be adjusted in the opening and closing state, and the deflation switch 130 is of a press type structure, which opens the deflation hole 112 by pressing the deflation switch 130, and when the deflation switch 130 is in a natural state without force, the deflation switch 130 is in a state of covering the deflation hole 112.

[0162] Specifically, as shown in Figure 15 , the deflation switch 130 of the present embodiment includes a main rod 1313 and an elastic member 1314,

[0163] As shown in Figure 14 and Figure 15 , the main rod 1313 passes through the deflation hole 112, one end of the main rod 1313 extends out of the shell 110, and the other end of the main rod 1313 is located in the shell 110, a shielding part 132 is connected to the end of the main rod 1313 located in the shell 110, and the projection of the shielding part 132 on the inner wall surface of the shell 110 can completely cover the deflation hole 112. The main rod 1313 moves along the axial direction of the deflation hole 112, driving the shielding part 132 to move, the elastic member 1314 is sleeved on the outer wall of the main rod 1313, the elastic member 1314 is for example a spring, and when the main rod 1313 moves along the axial direction of the deflation hole 112, the elastic force of the elastic member 1314 will change accordingly.

[0164] When the wearer of the earphone 100 presses the end of the main rod 1313 extending out of the shell 110, the main rod 1313 drives the shielding part 132 to move away from the inner wall surface of the shell 110, and the shielding part 132 can open the air vent 112, at this time, the elastic member 1314 is in a compressed state; when the pressure applied to the main rod 1313 is removed, the elastic force of the elastic member 1314 can drive the main rod 1313 to move out of the shell 110, and drive the shielding part 132 to move towards the inner wall surface of the shell 110, when the shielding part 132 moves to abut against the inner wall surface of the shell 110, the air vent switch 130 completely covers the air vent 112.

[0165] For example, the main rod 1313 and the shielding part 132 can be integrally formed, or the main rod 1313 and the shielding part 132 can be separately formed, and the main rod 1313 and the shielding part 132 are connected together by welding or bonding.

[0166] Because the earphone 100 has a small size, the air vent 112 formed on the shell 110 of the earphone 100 is also small, and thus the part of the main rod 1313 of the air vent switch 130 passing through the air vent 112 is thin, in order to facilitate the wearer to press the main rod 1313, as shown in Figure 15 In this embodiment, the main rod 1313 can include a rod body 1313a and a pressing part 1313b, the pressing part 1313b is formed at the end of the rod body 1313a located outside the shell 110, the rod body 1313a passes through the air vent 112, and the pressing part 1313b is exposed outside the shell 110, the cross-sectional area of the pressing part 1313b can be larger than that of the rod body 1313a, so as to form a sufficient pressing area on the end surface of the pressing part 1313b to facilitate the wearer to operate the pressing part 1313b.

[0167] In addition, as shown in Figure 14 During the movement of the main rod 1313 along the axial direction of the air vent 112, in order to prevent the main rod 1313 from being pulled out of the air vent 112 due to excessive external force, etc. In some embodiments, the cross-sectional area of the pressing part 1313b can be larger than the area of the air vent 112, so that when the main rod 1313 moves towards the inside of the shell 110, the end surface of the pressing part 1313b can abut against the outer surface of the shell 110 on the outer periphery of the air vent 112 when it reaches the limit position, so as to prevent the main rod 1313 from being pulled out of the air vent 112 due to the unrestricted movement of the main rod 1313 towards the inside of the shell 110.

[0168] In combination with Figure 14 and Figure 15As shown, the elastic member 1314 is sleeved on the outer wall of the rod body 1313a, one end of the elastic member 1314 can abut on the end face of the pressing portion 1313b, and a positioning ring table (not shown in the figure) can be protruded on the inner wall surface of the air release hole 112, and the other end of the elastic member 1314 can abut on the positioning ring table. In this way, when the pressing portion 1313b is driven to move the rod body 1313a into the shell 110, the spacing between the positioning ring table on the inner wall surface of the air release hole 112 and the end face of the pressing portion 1313b is reduced, and the elastic member 1314 is compressed, thereby generating an elastic force that can drive the rod body 1313a to move reversely after the external force applied on the pressing portion 1313b is removed, and drive the shielding portion 132 to abut on the inner wall surface of the shell 110, so that the shielding portion 132 covers the air release hole 112.

[0169] It can be understood that as long as there is a gap between the shielding portion 132 of the air release switch 130 and the inner wall surface of the shell 110, the air release hole 112 is in an open state, and the air release hole 112 can communicate the inside and outside of the shell 110 to release air outward. The spacing between the shielding portion 132 and the inner wall surface of the shell 110 is different, and the gap between them is different, so that the air release rate and the air release amount of the air release hole 112 are different.

[0170] Therefore, in order to adjust the air release amount of the air release hole 112 by using the air release switch 130, in some embodiments, a clamping structure can also be arranged on the inner wall of the air release hole 112, and the main rod 1313 can be clamped into the clamping structure to limit the main rod 1313 at this position, and the shielding portion 132 can stay at a specific position. In this way, the shielding portion 132 can stay at a specific position and an extreme position (the position farthest away from the inner wall surface of the shell 110), and the air release hole 112 can have different air release rates and air release amounts.

[0171] For example, only one clamping structure can be arranged on the inner wall of the air release hole 112, and the shielding portion 132 can stay at a specific position corresponding to the clamping structure except for the extreme position, and the air release hole 112 has two air release states; or more than two clamping structures can be arranged on the inner wall of the air release hole 112 along the axial direction, and the shielding portion 132 can stay at different specific positions corresponding to different clamping structures except for the extreme position, and the air release hole 112 has multiple air release states, which can more accurately adjust the air release amount of the air release hole 112.

[0172] Continuing to refer to Figure 14As shown, taking the first air vent 1121 and the second air vent 1122 provided on the shell 110 as examples, the air release switch 130 can be provided in only one air vent 112. For example, the first air vent 1121 with a smaller area can be kept in an open state, and a damping sheet 114 can be covered on the inner side of the first air vent 1121 to maintain a small amount of air release of the shell 110 and ensure the low-frequency effect of the earphone 100. The air release switch 130 is provided in the second air vent 1122 with a larger area, and the opening and closing state of the second air vent 1122 is controlled by the air release switch 130, and even the air release rate and the air release amount of the second air vent 1122 are adjusted, so that the low-frequency signal in the earphone 100 is timely and quickly released when the occlusion effect occurs in the ear canal.

[0173] In other embodiments, the air release switch 130 can also be provided in both corresponding air vents 112, that is, the air release switch 130 mounted on the shell 110 can include a first air release switch 130a and a second air release switch 130b, the first air release switch 130a is mounted on the first air vent 1121, and the second air release switch 130b is mounted on the second air vent 1122. By operating the first air release switch 130a and the second air release switch 130b, the opening and closing state of the first air vent 1121 and the second air vent 1122 can be controlled respectively, the air release rate and the air release amount of any one of the first air vent 1121 and the second air vent 1122 can be adjusted at a time, or the air release rate and the air release amount of the first air vent 1121 and the second air vent 1122 can be adjusted at the same time.

[0174] The other structures, functions, and working principles of the earphone 100 of the present embodiment are similar to those of the first embodiment, and will not be described here.

[0175] Embodiment Four

[0176] The present embodiment provides a method for eliminating the occlusion effect of an earphone 100, which can be applied to the earphone 100 of any one of the first embodiment to the third embodiment.

[0177] Figure 16 A flowchart of the method for eliminating the occlusion effect of an earphone provided in the embodiments of the present application is shown. Referring to Figure 16 The method for eliminating the occlusion effect of the earphone 100 of the present embodiment (hereinafter referred to as the method) includes:

[0178] S100, generating a detection signal according to the self-speech information generated in the external ear canal.

[0179] When the earphone 100 is worn on the ear of the wearer, if the wearer is talking, chewing, swallowing, or moving, the ear canal wall vibrates, and the self-speech action occurs in the external ear canal, thereby generating a low-frequency signal in the external ear canal. As described in the first embodiment, in combination with Figure 3The microphone 170 (for example, the FB microphone 171) in the earphone 100 can receive the low-frequency signal and generate a detection signal.

[0180] S200, generating a first leakage signal and a second leakage signal according to the detection signal; if the detection signal is within a first threshold range, the detection signal is the first leakage signal; if the detection signal is within a second threshold range, the detection signal is the second leakage signal; a lower limit of the first threshold range is greater than or equal to an upper limit of the second threshold range, and the first threshold range corresponds to a range of air leakage amount when the air leakage switch covers the corresponding air leakage hole, and the second threshold range corresponds to a range of air leakage amount when the air leakage switch exposes at least part of the corresponding air leakage hole.

[0181] When the self-voice action occurs in the ear canal, the low-frequency signal generated in the ear canal can be discharged outward through the air leakage hole 112 on the shell 110 of the earphone 100. The amount of air leakage of the air leakage hole 112 on the shell 110 is different, the amount of the low-frequency signal remaining in the shell 110 is different, and the size of the detection signal detected by the microphone 170 is also different. The detection signal can refer to the low-frequency signal in the shell 110.

[0182] For example, when the amount of air leakage of the air leakage hole 112 on the shell 110 is small, the low-frequency signal discharged is small, the low-frequency signal remaining in the shell 110 is large, and the signal value of the detection signal received by the microphone 170 is large; when the amount of air leakage of the air leakage hole 112 on the shell 110 is large, the low-frequency signal discharged is large, the low-frequency signal remaining in the shell 110 is small, and the signal value of the detection signal received by the microphone 170 is small.

[0183] Referring to Figure 4 , Figure 10 or Figure 13 For example, the air leakage hole 112 provided on the shell 110 includes a conventional first air leakage hole 1121 and an additional second air leakage hole 1122, and the first air leakage hole 1121 is in a normally open state and the second air leakage hole 1122 is controlled by the air leakage switch 130 to change the open and close state. When the occlusion effect occurs in the ear canal, if the second air leakage hole 1122 is in a covered state, only the first air leakage hole 1121 discharges outward, the low-frequency signal in the shell 110 cannot be discharged in time, and the low-frequency signal in the shell 110 is large. At this time, the signal value (low-frequency signal value) of the detection signal received by the microphone 170 is large; if the wearer operates the air leakage switch 130 to make the second air leakage hole 1122 in an exposed state, the first air leakage hole 1121 and the second air leakage hole 1122 simultaneously discharge outward, the amount of air leakage of the air leakage hole 112 is large, the low-frequency signal can be discharged in time and quickly, and the low-frequency signal in the shell 110 is small or even none. At this time, the signal value (low-frequency signal value) of the detection signal received by the microphone 170 is small.

[0184] In the case that the first air vent 1121 is always open and the second air vent 1122 is switched between the covering and opening states, the detection signal of different sizes is obtained, when the earphone 100 is in the state that the first air vent 1121 is outwardly vented and the air vent switch 130 covers the second air vent 1122, the detection signal received by the microphone 170 is, for example, within the first threshold range, and the detection signal corresponds to the first leakage signal; when the earphone 100 is in the state that the air vent switch 130 exposes the second air vent 1122 or part of the second air vent 1122, both air vents 112 are outwardly vented, and the detection signal received by the microphone 170 is, for example, within the second threshold range, and the detection signal corresponds to the second leakage signal.

[0185] It should be noted that the first threshold range corresponds to the range in which the shell 110 has more low-frequency signals, and the second threshold range corresponds to the range in which the shell 110 has fewer low-frequency signals, therefore, the signal value within the first threshold range is greater than the signal value within the second threshold range, and the low critical value of the first threshold range should be greater than or equal to the high critical value of the second threshold range.

[0186] Similarly, if the opening and closing states of the first air vent 1121 and the second air vent 1122 on the earphone 100 are controlled by the air vent switch 130, and the two venting states of the earphone 100 are taken as examples, that is, the first air vent 1121 is open and the second air vent 1122 is closed, and the first air vent 1121 is closed and the second air vent 1122 is open, then in the state that the first air vent 1121 is open and the second air vent 1122 is closed, the detection signal received by the microphone 170 is the first leakage signal, and in the state that the first air vent 1121 is closed and the second air vent 1122 is open, the detection signal received by the microphone 170 is the second leakage signal.

[0187] If the air vent switch 130 installed on the earphone 100 can control a single air vent 112 to have different venting amounts, for example, the shell 110 of the earphone 100 is provided with only one air vent 112, and the air vent switch 130 can control the air vent 112 to have different venting amounts, for example, the air vent switch 130 can be the air vent switch 130 in Embodiment One, which rotates the rotating plate 1312 to different parts to partially expose or completely expose the air vent 112, or the air vent switch 130 can be the air vent switch 130 in Embodiment Three, which controls the air vent 112 to have different venting rates by stopping the blocking part 132 at different positions. At this time, in the state that the air vent 112 has a small venting area or a small venting rate, the detection signal received by the microphone 170 is the first leakage signal, and in the state that the air vent 112 has a large venting area or a large venting rate, the detection signal received by the microphone 170 is the second leakage signal.

[0188] S300, generating a blocking signal according to the first leakage signal and the second leakage signal; wherein the blocking signal is a signal value after the first leakage signal is subtracted by the second leakage signal.

[0189] After obtaining the first leakage signal of the air vent 112 of the earphone 100 in a small air leakage area or a small air leakage rate state and the second leakage signal of the air vent 112 in a large air leakage area or a large air leakage rate state, the signal value after the first leakage signal is subtracted by the second leakage signal is the blocking signal generated when the occlusion effect occurs in the ear canal.

[0190] After obtaining the blocking signal, the blocking signal can be stored in a storage module, for example, stored in a flash memory or a virtual memory. According to the obtained blocking signal of each wearer, the occlusion effect in the ear canal of the wearer can be effectively eliminated.

[0191] S400, generating a compensation signal according to the blocking signal, the compensation signal having the same amplitude and opposite phase as the blocking signal, and being used to offset the blocking signal.

[0192] After obtaining the blocking signal generated by the occlusion effect in the ear canal of the wearer, a microphone 170 can be used to generate a compensation signal having the same amplitude and opposite phase as the blocking signal, and the compensation signal and the blocking signal offset each other, so as to eliminate the occlusion effect in the ear canal.

[0193] In this way, different occlusion states are formed according to different ear canals, wearing manners and sound producing manners of different wearers, the occlusion signal of each wearer can be accurately detected, the occlusion effect of each wearer can be targetedly eliminated, different compensation signals are generated, and the purpose of adaptive elimination of the occlusion effect is achieved.

[0194] In the description of the embodiments of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms “mounting”, “connection”, “connecting” should be understood in a broad sense, for example, can be fixed connection, can be indirect connection through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0195] The terms “first”, “second”, “third”, “fourth” and the like (if any) in the description and claims of the embodiments of the present application and the above drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence.

Claims

1. A method for eliminating the occlusion effect of a headphone, applied to a headphone, characterized in that, The method comprises: generating a detection signal according to self-speech information generated in the external auditory canal; generating a first leakage signal and a second leakage signal according to the detection signal; wherein, if the detection signal is within a first threshold range, the detection signal is the first leakage signal; if the detection signal is within a second threshold range, the detection signal is the second leakage signal; a lower limit of the first threshold range is greater than or equal to an upper limit of the second threshold range, and the first threshold range corresponds to a range of air leakage amount when the air leakage switch of the earphone shields the corresponding air leakage hole, and the second threshold range corresponds to a range of air leakage amount when the air leakage switch of the earphone exposes at least part of the corresponding air leakage hole; generating an occlusion signal according to the first leakage signal and the second leakage signal; wherein, the occlusion signal is the signal value after the first leakage signal is subtracted by the second leakage signal; generating a compensation signal according to the occlusion signal, the compensation signal has the same amplitude and opposite phase with the occlusion signal, and is used to offset the occlusion signal; The earphone comprises a shell and at least one air leakage switch, at least one air leakage hole is arranged on the shell, and the air leakage switch is movably connected to the shell, and the opening and closing state of the at least one air leakage hole is controlled by the air leakage switch. The air leakage switch comprises a transmission part and a shielding part, the transmission part passes through the inside and outside of the shell, one end of the transmission part located in the shell is connected with the shielding part, and the transmission part drives the shielding part to move so as to shield the air leakage hole or expose at least part of the air leakage hole.

2. The method of claim 1, wherein, The transmission part comprises a connecting rod and a rotating plate, the connecting rod passes through the two sides of the shell, one end of the connecting rod located in the shell is connected with the rotating plate, and the other end of the connecting rod located outside the shell has an operation part. The shielding part is connected to the rotating plate, and the connecting rod drives the rotating plate to rotate so as to shield the air leakage hole or expose at least part of the air leakage hole.

3. The method of claim 2, wherein, Two ends of the rotating plate are respectively a connecting end and a free end, the connecting end is connected with the connecting rod, the free end corresponds to the air leakage hole, and the shielding part is arranged at the free end.

4. The method of claim 2, wherein, The shielding part is completely overlapped with the air leakage hole in the orthographic projection on the air leakage hole, and part of the edge of the shielding part extends out of the rotating plate.

5. The method of claim 2-4, wherein, The at least one air leakage hole comprises a first air leakage hole and a second air leakage hole arranged at intervals, and the area of the first air leakage hole is smaller than the area of the second air leakage hole.

6. The method of claim 5, wherein, One air leakage switch is connected to the shell, and the rotating plate can be rotated to at least shield the second air leakage hole.

7. The method of claim 6, wherein, The center of the connecting rod is located on the central axis of the line between the center of the first air leakage hole and the center of the second air leakage hole, and the rotating plate can be rotated to shield the first air leakage hole or shield the second air leakage hole.

8. The method of claim 6, wherein, The connecting rod is located on the side of the second air leakage hole, and the connecting rod is away from the first air leakage hole, and the rotating plate can be rotated to shield the second air leakage hole.

9. The method of claim 5, wherein, The at least one deflation switch comprises a first deflation switch and a second deflation switch, a rotating plate of the first deflation switch is rotatable to make a shielding part cover the first deflation hole, and a rotating plate of the second deflation switch is rotatable to make a shielding part cover the second deflation hole.

10. The method of claim 9, wherein, The connecting rod of the first deflation switch is located on the side of the first deflation hole away from the second deflation hole, and the connecting rod of the second deflation switch is located on the side of the second deflation hole away from the first deflation hole.

11. The method of eliminating the occlusion effect of headphones according to any one of claims 6-10, characterized in that, The inner wall surface of the shell is provided with at least one positioning part, and when the rotating plate rotates to abut against the positioning part, the shielding part covers the deflation hole.

12. The method of claim 11, wherein, The inner wall surface of the shell is provided with one positioning part, and the positioning part is located on the side of the first deflation hole and the second deflation hole.

13. The method of claim 11, wherein, The at least one positioning part comprises a first positioning part and a second positioning part, the first positioning part is located on the side of the first deflation hole, and the second positioning part is located on the side of the second deflation hole.

14. The method of claim 6-10, 12-13, wherein, The inner wall surface of the shell is provided with a damping sheet, and the damping sheet covers the deflation hole.

15. The method of claim 14, wherein, The damping sheet comprises a first damping sheet covering the first deflation hole and a second damping sheet covering the second deflation hole, and the sound resistance of the first damping sheet is greater than that of the second damping sheet.

16. The method of claim 1, wherein, The transmission part comprises a main rod and an elastic member, the main rod passes through the deflation hole, one end of the main rod extends out of the shell, the shielding part is connected to one end of the main rod located in the shell, and the elastic member is sleeved on the outer wall of the main rod. The main rod is driven by force to move the shielding part away from the shell to open the deflation hole, or the elastic force of the elastic member drives the shielding part to move towards the shell to cover the deflation hole.

17. The method of claim 16, wherein, The main rod comprises a rod body and a pressing part, the pressing part is connected to one end of the rod body located outside the shell, and the elastic member is sleeved on the outer wall of the rod body. The inner wall of the deflation hole is provided with a positioning ring table, and the two ends of the elastic member abut against the positioning ring table and the pressing part, respectively.

18. The method of claim 17, wherein, The cross-sectional area of the pressing part is greater than the area of the deflation hole.

19. The method of eliminating the occlusion effect of headphones according to any one of claims 16-18, wherein, The inner wall of the deflation hole is provided with at least one clamping structure, and the main rod is clamped into or separated from the clamping structure.

20. The method of eliminating the occlusion effect of headphones according to any one of claims 16-18, wherein, The at least one deflation hole comprises a first deflation hole and a second deflation hole, and the area of the first deflation hole is smaller than that of the second deflation hole.

21. The method of claim 20, wherein, The shell is connected with one deflation switch, and the main rod of the deflation switch is located in the second deflation hole.

22. The method of claim 20, wherein, The inner wall surface of the shell is provided with a damping sheet, and the damping sheet covers the first deflation hole.

23. The method of claim 20, wherein the earphone occlusion effect is cancelled by, The at least one deflation switch comprises a first deflation switch and a second deflation switch, the main rod of the first deflation switch is located in the first deflation hole, and the main rod of the second deflation switch is located in the second deflation hole.

24. The method of eliminating the occlusion effect of a headphone of any of claims 1-4, 6-10, 12-13, 15-18, 21-23, wherein, The inner wall surface of the shell is provided with a sealing layer, the sealing layer is arranged around the outer periphery of the deflation hole, and the deflation switch is closely attached to the sealing layer.

25. The method of claim any one of claims 1-4, 6-10, 12-13, 15-18, 21-23, wherein, The shell is further provided with a loudspeaker. The housing has a sound outlet, a front sound cavity is formed between the side of the speaker facing the sound outlet and the housing, a rear sound cavity is formed between the side of the speaker facing away from the sound outlet and the housing, and the air bleed hole is in communication with the front sound cavity.

26. The method of claim 25, wherein, The air bleed hole is arranged on the housing at a position corresponding to the rear sound cavity.

27. The method of claim any one of claims 1-4, 6-10, 12-13, 15-18, 21-23, 26, wherein, A microphone is further included, and the microphone is arranged in the housing.

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