Patent Description:
Embodiments of this application relate to the field of electronic device technologies, and in particular, to an earphone.

An earphone is an energy converter. After receiving an electronic signal sent by a media player or a receiver, the earphone converts the electronic signal into an audible sound wave by using a speaker close to an ear canal, and the earphone is an essential accessory of a portable electronic device such as a mobile phone, a walkman, and a radio. In particular, a Bluetooth earphone, for example, a true wireless stereo (True Wireless Stereo, TWS for short) earphone, has become a prerequisite for people, for example, young people, because the Bluetooth earphone has advantages of being convenient to carry and avoiding winding of a transmission line.

Generally, the earphone includes an eartip, a housing, and a speaker located in the housing. A sound outlet is disposed on the housing, and the eartip cooperates with the sound outlet. The speaker divides an inner cavity of the housing into a front cavity and a rear cavity, where the front cavity is a part of the inner cavity that has the sound outlet, and the rear cavity is a part of the inner cavity that is away from the sound outlet. To prevent ear discomfort caused by increased pressures of an ear canal and the front cavity as the sound outlet and the eartip protrude into the ear canal when the earphone is worn, in a related technology, a front vent hole is usually disposed on a housing of an outer circumference of the front cavity to quickly release air flow in the ear canal and the front cavity, so as to quickly balance the pressures of the ear canal and the front cavity.

However, in the foregoing solution, when an area of the front vent hole is excessively large, too much leakage of air flow in the ear canal and the front cavity may affect sound quality and a noise reduction effect of the earphone.

Documents relevant in the state of the art in this field are <CIT>, <CIT>, <CIT>, and <CIT>.

<CIT> discloses an earphone device. The earphone device includes a main body and an eartip connected to the main body. The main body includes a chamber and a speaker. The speaker is disposed in the chamber. The eartip includes a communicating tube extending along an axis. A sound inlet and a sound outlet are formed on two ends of the communicating tube that are located at the axis, and a pressure-releasing hole penetrates a side wall of the communicating tube for pressure adjustment.

<CIT> discloses an earplug component and a headphone device using the same. The headphone device comprises a headphone body and an earplug component connected with the headphone body. The headphone body comprises a sound box and a speaker. The speaker is arranged inside the sound box. The earplug component comprises a connecting tube which extends along a long axis. A sound inlet hole and a sound outlet hole are formed at the two ends of the connecting tube on the long axis. Moreover, a pressure export hole is arranged through a sidewall of the connecting tube to facilitate pressure adjustment.

<CIT> discloses an earphone capable of adjusting sound effects. A horn cover is hermetically fixed to a rear cover to form a cavity. A horn single body is fixedly disposed in the cavity. A rotating cylinder is inserted into a through hole and is capable of rotating with respect to the horn cover. The part of the rotating cylinder exposed out of the horn cover forms a sound outlet cylinder, and the part disposed in the front cavity forms an integrated structure together with a rotating cover. The rotating cover is provided with at least two sound adjusting holes, and the apertures of the sound adjusting holes are different. An aperture of a first sound leakage hole is greater than the apertures of the sound adjusting holes. When the rotating cylinder is rotated at different positions with respect to the horn cover, the first sound leakage hole communicates with different sound adjusting holes. As the apertures (this can also be understood as the surface areas) of the sound adjusting holes are different, the sound adjusting holes having different apertures are used to form different combinations with the first sound leakage hole by picking a different sound adjusting hole. The different combinations provide different ventilation capacities by means of the sound adjusting holes, and therefore the sound output by the sound outlet cylinder can produce different sound quality effects.

<CIT> discloses an earphone device. The earphone device includes a housing, a speaker diaphragm, and a sealing cup. The housing includes a cavity and a plurality of vent holes acoustically coupled to the cavity. The speaker diaphragm is received in the cavity and configured to produce sound. The sealing cup is hermetically closed with the housing, and has at least one opening defined therethrough. The sealing cup and the housing cooperate to define an air chamber acoustically coupled to both the vent holes and the opening. The vent holes are configured to transfer the sound produced by the speaker diaphragm into the air chamber. The air chamber serves as an acoustic resonator to resonate the sound. The opening is configured to allow the sound transfer from the air chamber to outside of the air chamber.

Embodiments of this application provide an earphone, so as to effectively alleviate an occlusion effect while avoiding impact on sound quality and a noise reduction effect of the earphone.

According to a first aspect, an embodiment of this application provides an earphone, where the earphone includes at least a housing and at least one eartip, where the housing includes a housing body and a sound outlet connected to the housing body, and at least one first vent hole is disposed on the housing; and the eartip cooperates with the sound outlet such that the eartip is fixedly positioned on the sound outlet such that it does not fall off of the sound outlet, wherein the position of the eartip is adjustable relative to the sound outlet such that the first vent hole ranges from being completely exposed to completely shielded based on a positional adjustment of the eartip relative to the sound outlet, wherein the positional adjustment of the eartip relative to the sound outlet defines a cooperation state of the eartip and the sound outlet.

According to the earphone provided in this embodiment of this application, at least one first vent hole is disposed on the housing. Based on the cooperation state of the eartip and the sound outlet, the first vent hole is partially shielded or completely shielded by the sound outlet, or the first vent hole is completely exposed. In this way, when an ear canal of a human body is blocked and an occlusion effect is serious, a cooperation relationship between the eartip and the sound outlet can be adjusted, so that the first vent hole on the housing is completely exposed or a relatively small part is shielded, thereby alleviating or avoiding the occlusion effect. When sound quality and a noise reduction effect of the earphone are poor, a cooperation relationship between the eartip and the sound outlet can be adjusted, so that the first vent hole on the housing is
completely shielded or a relatively large part is shielded, thereby improving the sound quality and the noise reduction effect of the earphone. Therefore, in this embodiment of this application, the sound quality and the noise reduction effect of the earphone are prevented from being affected, and the occlusion effect can be effectively alleviated by adjusting the cooperation relationship between the eartip and the sound outlet.

In a possible implementation of the first aspect, the method further includes: a speaker located in the housing, where a first cavity is formed between the housing and a surface that is of the speaker and that faces the sound outlet, and a second cavity is formed between the housing and a surface that is of the speaker and that is away from the sound outlet; and the at least one first vent hole is connected to the first cavity.

The first vent hole is connected to the first cavity. After volume generated by the speaker enters the first cavity, the volume may flow out of the housing through the first vent hole connected to the first cavity. In this way, leakage of the volume can be implemented, and air flow in the ear canal and the first cavity can be released, so as to balance pressures of the ear canal and the first cavity, and avoid an occlusion effect caused by increased pressures of the ear canal and the first cavity, thereby preventing ear discomfort.

In a possible implementation of the first aspect, the sound outlet is configured to output sound generated by the speaker to an ear of a user, and the at least one first vent is configured to conduct the first cavity to an ambient environment. The ambient environment is understood as an external environment or an atmospheric environment outside the earphone and the ear, and the first vent hole is not shielded by the ear, so that air flow in the first cavity can be released quickly.

In a possible implementation of the first aspect, the housing body includes a body part and a surrounding part connected to the body part, where an outer ring side of the surrounding part is connected to the body part, and an inner ring side of the surrounding part is connected to the sound outlet; and an axial direction of the surrounding part is the same as an axial direction of the sound outlet.

In a possible implementation of the first aspect, each the eartip includes an outer enclosing shell and an inner enclosing shell, where the outer enclosing shell is disposed on an outer side of the inner enclosing shell, and the inner enclosing shell is configured to shield the first vent hole.

In a possible implementation of the first aspect, the at least one first vent hole is located on the surrounding part.

In a possible implementation of the first aspect, the at least one eartip includes a first eartip and a second eartip. An axial size of an inner enclosing shell of the first eartip is less than an axial size of an inner enclosing shell of the second eartip. When the first eartip cooperates with the sound outlet, there is an interval between the surrounding part and an end that is of the inner enclosing shell of the first eartip and that is close to the housing body, so that the first vent hole is completely exposed. When the second eartip cooperates with the sound outlet, one end that is of the inner enclosing shell of the second eartip and that is close to the housing body abuts against the surrounding part, so as to shield at least a part of the first vent hole.

In this way, when the ear canal of the human body is blocked and the occlusion effect is serious, the first eartip cooperates with the sound outlet, so that the first vent hole located on the surrounding part is completely exposed, thereby avoiding the occlusion effect. When the sound quality and the noise reduction effect of the earphone are poor, the second eartip cooperates with the sound outlet, so that the first vent hole located on the surrounding part is shielded, thereby improving the sound quality and the noise reduction effect of the earphone.

In a possible implementation of the first aspect, a blocking part is disposed on a side that is of the surrounding part and that is close to the body part, and the blocking part, the surrounding part and an outer side wall of the sound outlet are enclosed together to form a first groove; and an end that is of the inner enclosing shell of the first eartip and that is close to the housing body or an end that is of the inner enclosing shell of the second eartip and that is close to the housing body extends into the first groove.

The blocking part is disposed on the side that is of the surrounding part and that is close to the body part, and the blocking part, the surrounding part and the outer side wall of the sound outlet are enclosed together to form a first groove. In this way, when the inner enclosing shell of the first eartip or the inner enclosing shell of the second eartip shields the first vent hole on the surrounding part, an end that is of the inner enclosing shell of the first eartip and that is close to the housing body or an end that is of the inner enclosing shell of the second eartip and that is close to the housing body extends into the first groove, and the first groove can limit a specific position of the end that is of the inner enclosing shell of the first eartip and that is close to the housing body or the end that is of the inner enclosing shell of the second eartip and that is close to the housing body, so as to avoid relative position movement of the inner enclosing shell of the first eartip or the inner enclosing shell of the second eartip relative to the first vent hole on the surrounding part, thereby improving stability when the inner enclosing shell of the first eartip or the inner enclosing shell of the second eartip shields the first vent hole.

In a possible implementation of the first aspect, at least one second vent hole is further disposed on the body part; and the at least one second vent hole is connected to the first cavity. At least one second vent hole is further disposed on the body part, and at least one second vent hole is connected to the first cavity. In this way, after volume generated by the speaker enters the first cavity, the volume can not only flow out of the housing through the first vent hole connected to the first cavity, but also flow out of the housing through the second vent hole connected to the first cavity. In this way, leakage of the volume can be further implemented, air flow in the ear canal and the first cavity can be better released, so as to better balance pressures of the ear canal and the first cavity, and avoid, to a greater extent, an occlusion effect caused by increased pressures of the ear canal and the first cavity, thereby preventing ear discomfort.

In a possible implementation, the at least one first vent hole is located on a side wall of the sound outlet.

In a possible implementation of the first aspect, at least one third vent hole is disposed on the inner enclosing shell; when the eartip cooperates with the sound outlet, the third vent hole is at least partially opposite to the first vent hole; or the third vent is staggered from the first vent.

When the eartip cooperates with the sound outlet, the third vent hole on the inner enclosing shell of the eartip and the first vent hole on the side wall of the sound outlet are at least partially opposite or staggered. In this way, when the ear canal of the human body is blocked and the occlusion effect is serious, a cooperation relationship between the eartip and the sound outlet can be adjusted, so that the third vent hole on the inner enclosing shell of the eartip is completely opposite or a relatively large part is opposite to the first vent hole on the side wall of the sound outlet, and the first vent hole on the housing is completely exposed or a relatively small part is shielded, thereby alleviating or avoiding the occlusion effect. When the sound quality and the noise reduction effect of the earphone are poor, a cooperation relationship between the eartip and the sound outlet can be adjusted, so that the third vent hole on the inner enclosing shell of the eartip is opposite or staggered from the first vent hole on the side wall of the sound outlet, so that the first vent hole is completely shielded or a relatively large part is shielded, thereby improving the sound quality and the noise reduction effect of the earphone.

In a possible implementation of the first aspect, the at least one first vent hole includes at least one vent hole group; and each vent hole group includes a first sub vent hole and a second sub vent hole. An inner diameter of the first sub vent hole is different from an inner diameter of the second sub vent hole; and an inner diameter of the third vent hole is greater than the inner diameter of the first sub vent hole and the inner diameter of the second sub vent hole. When the eartip cooperates with the sound outlet, the third vent hole is opposite to the first sub vent hole, or the third vent hole is opposite to the second sub vent hole.

In this way, when the ear canal of the human body is blocked and the occlusion effect is serious, a cooperation relationship between the eartip and the sound outlet can be adjusted, so that the third vent hole is opposite to one with a relatively large inner diameter of the first sub vent hole and the second sub vent hole, so as to implement a relatively large amount of leakage, thereby alleviating or avoiding the occlusion effect. When the sound quality and the noise reduction effect of the earphone are poor, a cooperation relationship between the eartip and the sound outlet can be adjusted, so that the third vent hole is opposite to one with a relatively small inner diameter of the first sub vent hole and the second sub vent hole, so as to implement a relatively small amount of leakage, thereby improving the sound quality and the noise reduction effect of the earphone.

In a possible implementation of the first aspect, the at least one vent hole group includes a first vent hole group and a second vent hole group, where a line between a first sub vent hole in the first vent hole group and a first sub vent hole in the second vent hole group does not intersect a line between a second sub vent hole in the first vent hole group and a second sub vent hole in the second vent hole group. The at least one eartip includes a third eartip, and there are two third vent holes on a side wall of an inner enclosing shell of the third eartip.

When the third eartip and the sound outlet are in a first cooperation state, one of the two third vent holes is opposite to the first sub vent hole in the first vent hole group, and the other of the two third vent holes is opposite to the first sub vent hole in the second vent hole group; and when the third eartip and the sound outlet are in a second cooperation state, one of the two third vent holes is opposite to the second sub vent hole in the first vent hole group, and the other of the two third vent holes is opposite to the second sub vent hole in the second vent hole group.

In a possible implementation of the first aspect, the at least one vent hole group includes a first vent hole group and a second vent hole group, where a line between a first sub vent hole in the first vent hole group and a first sub vent hole in the second vent hole group intersects with a line between a second sub vent hole in the first vent hole group and a second sub vent hole in the second vent hole group. The at least one eartip includes a fourth eartip and a fifth eartip. There are two third vent holes on a side wall of an inner enclosing shell of the fourth eartip and a side wall of an inner enclosing shell of the fifth eartip.

When the fourth eartip cooperates with the sound outlet, one of the two third vent holes on the side wall of the inner enclosing shell of the fourth eartip is opposite to the first sub vent hole in the first vent hole group; and the other of the two third vent holes is opposite to the first sub vent hole in the second vent hole group; and when the fifth eartip cooperates with the sound outlet, one of the two third vent holes on the side wall of the inner enclosing shell of the fifth eartip is opposite to the second sub vent hole in the first vent hole group, and the other of the two third vent holes is opposite to the second sub vent hole in the second vent hole group.

In a possible implementation of the first aspect, the at least one eartip includes a sixth eartip and a seventh eartip. The sixth eartip cooperates with the sound outlet, or the seventh eartip cooperates with the sound outlet. An axial size of the sixth eartip is different from an axial size of the seventh eartip.

According to a second aspect, an embodiment of this application provides an earphone, including a housing and at least one eartip, where the housing is provided with a sound outlet; the at least one eartip includes a sixth eartip and a seventh eartip; the sixth eartip cooperates with the sound outlet, or the seventh eartip cooperates with the sound outlet; and an axial size of the sixth eartip is different from an axial size of the seventh eartip.

According to the earphone provided in this embodiment of this application, two different eartips are disposed, that is, the sixth eartip and the seventh eartip are disposed. The axial size of the sixth eartip is different from the axial size of the seventh eartip. In specific use, in an earphone that includes an eartip of a relatively large axial size and the sound outlet, a length of the eartip is relatively long, an in-ear depth of the earphone is relatively deep, and therefore the earphone has good sealing after being worn. In an earphone that includes an eartip of a relatively small axial size and the sound outlet, a length of the eartip is relatively short, an in-ear depth of the earphone is relatively shallow, and therefore the earphone has a large amount of leakage after being worn. In this way, when an ear canal of a human body is blocked and an occlusion effect is serious, an eartip with a relatively small axial size can be used to increase an amount of leakage, thereby alleviating or avoiding the occlusion effect. When sound quality and a noise reduction effect of the earphone are poor, an eartip with a relatively large axial size and good sealing performance is used, to improve the sound quality and the noise reduction effect of the earphone. Therefore, in this embodiment of this application, the sound quality and the noise reduction effect of the earphone are prevented from being affected, and the occlusion effect can be effectively alleviated by using the sixth eartip or the seventh eartip with different axial sizes.

In a possible implementation of the first aspect or the second aspect, each the eartip further includes a separator, where the separator is connected to the inner enclosing shell, and the separator divides the inner enclosing shell into a first part and a second part. One end that is of the first part and that is away from the second part is connected to the outer enclosing shell; and the second part and the separator are enclosed together to form a fitting cavity, and when the eartip cooperates with the sound outlet, at least a part of the sound outlet is located in the fitting cavity. The second part is configured to shield the first vent hole.

In a possible implementation of the first aspect or the second aspect, one of an outer peripheral wall of the sound outlet and an inner peripheral wall of the inner enclosing shell is provided with at least one protruding part, and the other of the outer peripheral wall of the sound outlet and the inner peripheral wall of the inner enclosing shell is provided with at least one second groove; and the protruding part cooperates with the second groove. In this way, positions of the sound outlet and the eartip can be limited, so as to avoid relative position movement of the sound outlet and the eartip during a cooperation process, and even a problem that the eartip falls off from the sound outlet.

In a possible implementation of the first aspect or the second aspect, at least one opening is further disposed on the separator, and the opening is configured to output a sound output from the sound outlet to an ear of a user. At least one opening is disposed on the separator, and the opening outputs sound output from the sound outlet to the ear of the user, so that energy generated by the speaker in the housing is smoothly transmitted to the ear of the user, thereby optimizing a sound production effect of the earphone.

In a possible implementation of the first aspect or the second aspect, the housing further includes a stem, where one end of the stem is connected to a side that is of the housing and that is away from the sound outlet. In this way, a structure of the earphone in this embodiment of this application may also be applicable to an earphone with a stem.

Terms used in implementations of this application are only used to explain specific embodiments of this application, and are not intended to limit this application. The following clearly describes implementations in embodiments of this application with reference to accompanying drawings.

An earphone is a pair of conversion units. The earphone receives an electronic signal sent by a media player or a receiver, and converts the electronic signal into an audible sound wave by using a speaker close to an ear. An earphone is generally divided into a wired earphone and a wireless earphone, for example, a Bluetooth earphone. The Bluetooth earphone may be a true wireless stereo (True Wireless Stereo, TWS for short) earphone.

The Bluetooth earphone such as a TWS earphone ushered in explosive growth in a short term. More and more people are accustomed to using TWS earphones in offices, travel, and fitness places. The TWS earphone has also become a prerequisite for young people, and young people have developed a personal habit of using the TWS earphone. Compared with a conventional wired earphone, the TWS earphone has advantages of being convenient to carry and avoiding winding of a transmission line.

In a related technology, an earphone includes an eartip, a housing, and a speaker located in a housing, where the housing is provided with a sound outlet, and the eartip cooperates with the sound outlet. The speaker divides an inner cavity of the housing into a front cavity and a rear cavity, where the front cavity is a part with the sound outlet in the inner cavity, and the rear cavity is a part away from the sound outlet in the inner cavity. Generally, for an in-ear earphone, in a wearing state, an eartip and a sound outlet extend into an ear canal, and other parts of the housing except the sound outlet are accommodated in a cavum conchae. The earphone is fastened to an ear by using an inner wall of the cavum conchae and an inner wall of the ear canal, so that the earphone is worn.

It should be noted that, in a sound transmission process of the earphone, bone conduction energy may cause a mandible and a soft tissue near an external ear canal to vibrate, which further causes a cartilage wall of the ear canal to vibrate, and generated energy is subsequently transferred into an air volume in a tube. When the ear canal is blocked, most of the energy is trapped, causing a level of sound pressure delivered to an eardrum and ultimately a cochlea to rise, resulting in an occlusion effect.

To prevent ear discomfort caused by an occlusion effect caused by increased pressures of an ear canal and the front cavity as the sound outlet and the eartip protrude into the ear canal when the earphone is worn, in a related technology, a front vent hole is usually disposed on a housing of an outer circumference of the front cavity to quickly release air flow in the ear canal and the front cavity, so as to quickly balance the pressures of the ear canal and the front cavity. However, when an area of the front vent hole is excessively large, too much air leakage of the ear canal and the front cavity may affect sound quality and a noise reduction effect of the earphone; and when the area of the front vent hole is too large, the occlusion effect is serious.

Based on this, an embodiment of this application provides an earphone, at least one first vent hole is disposed on the housing. When the eartip cooperates with the sound outlet, the first vent hole is partially shielded or completely shielded by the sound outlet, or the first vent hole is completely exposed. In this way, when an ear canal of a human body is blocked and the occlusion effect is serious, a cooperation relationship between the eartip and the sound outlet can be adjusted, so that the first vent hole on the housing is completely exposed or a relatively small part is shielded, thereby alleviating or avoiding the occlusion effect. When sound quality and a noise reduction effect of the earphone are poor, a cooperation relationship between the eartip and the sound outlet can be adjusted, so that the first vent hole on the housing is completely shielded or a relatively large part is shielded, thereby improving the sound quality and the noise reduction effect of the earphone. Therefore, in this embodiment of this application, the sound quality and the noise reduction effect of the earphone are prevented from being affected, and the occlusion effect can be effectively alleviated by adjusting the cooperation relationship between the eartip and the sound outlet.

With reference to accompanying drawings, the following uses different embodiments as examples to describe a specific structure of the earphone in detail.

Referring to <FIG> and <FIG>, an embodiment of this application provides an earphone <NUM>. The earphone <NUM> may include at least a housing <NUM> and at least one eartip <NUM>. Specifically, as shown in <FIG>, the housing <NUM> may include a housing body <NUM> and a sound outlet <NUM>, where the sound outlet <NUM> is connected to the housing body <NUM>, and at least one first vent hole <NUM> is disposed on the housing <NUM>. The eartip <NUM> cooperates with the sound outlet <NUM>, so that at least one first vent hole <NUM> is completely exposed or at least partially shielded.

Specifically, in a use process, when the eartip <NUM> cooperates with the sound outlet <NUM>, the sound outlet <NUM> partially shields the first vent hole <NUM>, or the sound outlet <NUM> completely shields the first vent hole <NUM>, or the sound outlet <NUM> completely exposes the first vent hole <NUM>.

In this way, when an ear canal of a human body is blocked and an occlusion effect is serious, a cooperation relationship between the eartip <NUM> and the sound outlet <NUM> can be adjusted, so that the first vent hole <NUM> located on the housing <NUM> is completely exposed or a relatively small part is shielded, and a sound wave caused by vibration is released through an external ear canal by increasing an amount of leakage, thereby alleviating or avoiding the occlusion effect. When sound quality and a noise reduction effect of the earphone <NUM> are poor, a cooperation relationship between the eartip <NUM> and the sound outlet <NUM> can be adjusted, so that the first vent hole <NUM> on the housing <NUM> is completely shielded or a relatively large part is shielded, thereby improving the sound quality and the noise reduction effect of the earphone <NUM>. Therefore, in this embodiment of this application, the sound quality and the noise reduction effect of the earphone <NUM> are prevented from being affected, and the occlusion effect can be effectively alleviated by adjusting the cooperation relationship between the eartip <NUM> and the sound outlet <NUM>.

It can be understood that the earphone <NUM> provided in this embodiment of this application may further include a speaker (not shown in the figure), where the speaker is located in the housing <NUM>, a first cavity <NUM> (refer to <FIG> or <FIG>) is formed between the housing <NUM> and a surface that is of the speaker and that faces the sound outlet <NUM>, a second cavity (not shown in the figure) is formed between the housing <NUM> and a surface that is of the speaker and that is away from the sound outlet <NUM>, and at least one first vent hole <NUM> is connected to the first cavity <NUM>.

In this way, after volume generated by the speaker enters the first cavity <NUM>, the volume may flow out of the housing <NUM> through the first vent hole <NUM> connected to the first cavity <NUM>. In this way, leakage of the volume can be implemented, and air flow in the ear canal and the first cavity <NUM> can be released, so as to balance pressures of the ear canal and the first cavity <NUM>, and avoid an occlusion effect caused by increased pressures of the ear canal and the first cavity <NUM>, thereby preventing ear discomfort.

In this embodiment of this application, the sound outlet <NUM> may be configured to output sound generated by the speaker to an ear of a user, and at least one first vent hole <NUM> may be configured to conduct the first cavity <NUM> to an ambient environment. The ambient environment is understood as an external environment or an atmospheric environment outside the earphone <NUM> and the ear, and the first vent hole <NUM> is not shielded by the ear, so that air flow in the first cavity <NUM> can be released quickly.

In addition, it can be understood that the vent hole may also be referred to as a sound vent hole. Specifically, the sound vent hole is usually used to connect gas in a front cavity (that is, the first cavity <NUM>) of the housing <NUM> to the external environment, so as to transmit part of the sound in the front cavity to the external environment through the vent hole.

As shown in <FIG>, the housing body <NUM> may include a body part <NUM> and a surrounding part <NUM>, where the surrounding part <NUM> is connected to the body part <NUM>. Specifically, an outer ring side <NUM> of the surrounding part <NUM> is connected to the body part <NUM>, an inner ring side <NUM> of the surrounding part <NUM> is connected to the sound outlet <NUM>, and an axial direction of the surrounding part <NUM> is consistent with an axial direction of the sound outlet <NUM>.

In some embodiments, as shown in <FIG>, each eartip <NUM> may include an outer enclosing shell <NUM> and an inner enclosing shell <NUM>, where the outer enclosing shell <NUM> may be disposed on an outer side of the inner enclosing shell <NUM>, and the inner enclosing shell <NUM> is configured to shield the first vent hole <NUM>.

It can be understood that, in this embodiment of this application, the at least one first vent hole <NUM> may be located on the surrounding part <NUM> (refer to <FIG> or <FIG>).

Specifically, as shown in <FIG> and <FIG>, the at least one eartip <NUM> may include a first eartip <NUM> and a second eartip <NUM>, where an axial size of an inner enclosing shell <NUM> of the first eartip <NUM> is different from an axial size of an inner enclosing shell <NUM> of the second eartip <NUM>.

It should be noted that the axial size of the inner enclosing shell <NUM> of the first eartip <NUM> refers to a size of the inner enclosing shell <NUM> of the first eartip <NUM> in an axial direction of the first eartip <NUM>; and the axial size of the inner enclosing shell <NUM> of the second eartip <NUM> refers to a size of the inner enclosing shell <NUM> of the second eartip <NUM> in an axial direction of the second eartip <NUM>.

For example, the axial size of the inner enclosing shell <NUM> of the first eartip <NUM> is less than the axial size of the inner enclosing shell <NUM> of the second eartip <NUM>. When the first eartip <NUM> cooperates with the sound outlet <NUM>, there is an interval L1 between the inner enclosing shell <NUM> of the first eartip <NUM> and the surrounding part <NUM>, so that the first vent hole <NUM> is completely exposed. When the second eartip <NUM> cooperates with the sound outlet <NUM>, the inner enclosing shell <NUM> of the second eartip <NUM> abuts against the surrounding part <NUM> to shield at least a part of the first vent hole <NUM>.

It can be understood that, as shown in <FIG> and <FIG>, each eartip <NUM> may further include a separator <NUM>, where the separator <NUM> is connected to the inner enclosing shell <NUM>. In addition, the separator <NUM> may divide the inner enclosing shell <NUM> into a first part <NUM> and a second part <NUM>. Referring to <FIG>, one end that is of the first part <NUM> of the inner enclosing shell <NUM> and that is away from the second part <NUM> of the inner enclosing shell <NUM> may be connected to the outer enclosing shell <NUM>, and the second part <NUM> of the inner outer enclosing shell <NUM> and the separator <NUM> are enclosed together to form a fitting cavity <NUM>. When the eartip <NUM> cooperates with the sound outlet <NUM>, at least a part of the sound outlet <NUM> is located in the fitting cavity <NUM>, and the second part <NUM> is configured to shield the first vent hole <NUM>.

Specifically, an axial size of the second part <NUM> of the inner enclosing shell <NUM> of the first eartip <NUM> is less than an axial size of the second part <NUM> of the inner enclosing shell <NUM> of the second eartip <NUM>. <FIG> is a sectional view when the first eartip <NUM> cooperates with the sound outlet <NUM>. <FIG> is a sectional view when the second eartip <NUM> cooperates with the sound outlet <NUM>.

When the first eartip <NUM> cooperates with the sound outlet <NUM>, as shown in <FIG>, there is an interval L1 between the second part <NUM> of the inner enclosing shell <NUM> of the first eartip <NUM> and the surrounding part <NUM>, so that the first vent hole <NUM> is completely exposed. When the second eartip <NUM> cooperates with the sound outlet <NUM>, as shown in <FIG>, the second part <NUM> of the inner enclosing shell <NUM> of the second eartip <NUM> abuts against the surrounding part <NUM> to shield at least a part of the first vent hole <NUM>.

In this way, when the ear canal of the human body is blocked and the occlusion effect is serious, the first eartip <NUM> cooperates with the sound outlet <NUM>, and there is an interval L1 between the second part <NUM> of the inner enclosing shell <NUM> of the first eartip <NUM> and the surrounding part <NUM>, so that the first vent hole <NUM> located on the surrounding part <NUM> is completely exposed, thereby avoiding the occlusion effect. Alternatively, when the sound quality and the noise reduction effect of the earphone <NUM> are poor, the second eartip <NUM> cooperates with the sound outlet <NUM>, and the second part <NUM> of the inner enclosing shell <NUM> of the second eartip <NUM> abuts against the surrounding part <NUM>, so that the first vent hole <NUM> located on the surrounding part <NUM> is shielded, thereby improving the sound quality and the noise reduction effect of the earphone <NUM>.

That is, in this embodiment of this application, two eartips (the first eartip <NUM> and the second eartip <NUM>) are designed to be compatible with sound quality, a noise reduction effect, and an occlusion effect, so as to improve experience of a user when using the earphone <NUM>. Wearing the second eartip <NUM> in a scenario with a serious occlusion effect such as exercise can effectively alleviate the occlusion effect. Wearing the first eartip <NUM> can ensure sound quality and a noise reduction effect.

In addition, in this embodiment of this application, as shown in <FIG> or <FIG>, at least one second vent hole <NUM> is further disposed on the body part <NUM>, and at least one second vent hole <NUM> is connected to the first cavity <NUM>.

In this way, after the volume generated by the speaker enters the first cavity <NUM>, the volume can not only flow out of the housing <NUM> through the first vent hole <NUM> connected to the first cavity <NUM>, but also flow out of the housing <NUM> through the second vent hole <NUM> connected to the first cavity <NUM>. In this way, leakage of the volume can be further implemented, air flow in the ear canal and the first cavity <NUM> can be better released, so as to better balance pressures of the ear canal and the first cavity <NUM>, and avoid, to a greater extent, an occlusion effect caused by increased pressures of the ear canal and the first cavity <NUM>, thereby preventing ear discomfort.

As shown in <FIG>, in this embodiment of this application, a blocking part <NUM> may be disposed on a side that is of the surrounding part <NUM> and that is close to the body part <NUM>. In this way, the blocking part <NUM>, the surrounding part <NUM> and an outer wall of the sound outlet <NUM> may be enclosed together to form a first groove <NUM>. At least a part of the second part <NUM> of the inner enclosing shell <NUM> of the first eartip <NUM> extends into the first groove <NUM>, or at least a part of the second part <NUM> of the inner enclosing shell <NUM> of the second eartip <NUM> extends into the first groove <NUM>.

In this way, when the second part <NUM> of the inner enclosing shell <NUM> of the first eartip <NUM> or the second part <NUM> of the inner enclosing shell <NUM> of the second eartip <NUM> shields the first vent hole <NUM> on the surrounding part <NUM>, at least a part of the second part <NUM> of the inner enclosing shell <NUM> of the first eartip <NUM> or the second part <NUM> of the inner enclosing shell <NUM> of the second eartip <NUM> extends into the first groove <NUM>, so that the first groove <NUM> can limit a position of the second part <NUM> of the inner enclosing shell <NUM> of the first eartip <NUM> or a position of the second part <NUM> of the inner enclosing shell <NUM> of the second eartip <NUM> to prevent the second part <NUM> of the inner enclosing shell <NUM> of the first eartip <NUM> or the second part <NUM> of the inner enclosing shell <NUM> of the second eartip <NUM> from moving relative to the first vent hole <NUM> on the surrounding part <NUM>, thereby improving stability when the second part <NUM> of the inner enclosing shell <NUM> of the first eartip <NUM> or the second part <NUM> of the inner enclosing shell <NUM> of the second eartip <NUM> shields the first vent hole <NUM>.

In addition, in this embodiment of this application, one of an outer peripheral wall of the sound outlet <NUM> and an inner peripheral wall of the outer enclosing shell <NUM> may be provided with at least one protruding part <NUM>, the other of the outer peripheral wall of the sound outlet <NUM> and the inner peripheral wall of the outer enclosing shell <NUM> may be provided with at least one second groove <NUM>, and the protruding part <NUM> cooperates with the second groove <NUM>.

It can be easily understood that, in this embodiment of this application, a cooperation manner between the protruding part <NUM> and the second groove <NUM> includes the following two possible implementations:.

A possible implementation is as follows: The outer peripheral wall of the sound outlet <NUM> is provided with at least one protruding part <NUM>, the inner peripheral wall of the outer enclosing shell <NUM> of the eartip <NUM> is provided with at least one second groove <NUM>, and the protruding part <NUM> cooperates with the second groove <NUM>. For example, in <FIG>, the outer peripheral wall of the sound outlet <NUM> are provided with two protruding parts <NUM>, and the inner peripheral wall of the outer enclosing shell <NUM> of the eartip <NUM> are provided with two second grooves <NUM>.

Another possible implementation is as follows: An inner peripheral wall of the outer enclosing shell <NUM> of the eartip <NUM> is provided with at least one protruding part <NUM>, an outer peripheral wall of the sound outlet <NUM> is provided with at least one second groove <NUM>, and the protruding part <NUM> cooperates with the second groove <NUM>.

In this way, the protruding part <NUM> cooperates with the second groove <NUM>, that is, positions of the sound outlet <NUM> and the eartip <NUM> can be limited, so as to avoid a relative position movement of the sound outlet <NUM> and the eartip <NUM> in a cooperation process, and even a problem that the eartip <NUM> falls off from the sound outlet <NUM>.

In addition, in a possible implementation, as shown in <FIG>, at least one opening <NUM> may be further disposed on the separator <NUM>, and the opening <NUM> is configured to output the sound output from the sound outlet <NUM> to the ear of the user. The opening <NUM> outputs the sound output from the sound outlet <NUM> to the ear of the user, so that energy generated by the speaker in the housing <NUM> can be smoothly transmitted to the ear of the user, thereby optimizing a sound output effect of the earphone <NUM>.

In addition, as shown in <FIG> or <FIG>, the housing <NUM> may further include a stem <NUM>, and one end of the stem <NUM> is connected to a side that is of the housing <NUM> and that is away from the sound outlet <NUM>. In this way, a structure of an earphone in this embodiment of this application may also be applicable to the earphone <NUM> with the stem <NUM>.

An embodiment of this application further provides an earphone <NUM> of another structure. A difference between Embodiment <NUM> and Embodiment <NUM> lies in that specific arrangement positions of a first vent hole <NUM> are different.

In this embodiment of this application, at least one first vent hole <NUM> may be located on a side wall of a sound outlet <NUM> (refer to <FIG>).

Specifically, in some embodiments, at least one third vent hole <NUM> may be disposed on an inner enclosing shell <NUM>. When an eartip <NUM> cooperates with the sound outlet <NUM>, the third vent hole <NUM> is at least partially opposite to the first vent hole <NUM>, or the third vent hole <NUM> is staggered from the first vent hole <NUM>.

In this way, when the eartip <NUM> cooperates with the sound outlet <NUM>, the third vent hole <NUM> on the inner enclosing shell <NUM> of the eartip <NUM> and the first vent hole <NUM> on the side wall of the sound outlet <NUM> are at least partially opposite or staggered. Therefore, when an ear canal of a human body is blocked and an occlusion effect is serious, a cooperation relationship between the eartip <NUM> and the sound outlet <NUM> can be adjusted, so that the third vent hole <NUM> on the inner enclosing shell <NUM> of the eartip <NUM> and the first vent hole <NUM> on the side wall of the sound outlet <NUM> are completely opposite or a relatively large part are opposite, so that the first vent hole <NUM> is completely exposed or a relatively small part is shielded, thereby alleviating or avoiding the occlusion effect. When sound quality and a noise reduction effect of the earphone <NUM> are poor, a cooperation relationship between the eartip <NUM> and the sound outlet <NUM> can be adjusted, so that the third vent hole <NUM> on the inner enclosing shell <NUM> of the eartip <NUM> is partially opposite to or staggered from the first vent hole <NUM> on the side wall of the sound outlet <NUM>, so that the first vent hole <NUM> is completely shielded or a relatively large part is shielded, thereby improving the sound quality and the noise reduction effect of the earphone <NUM>.

It should be noted that, in this embodiment of this application, the at least one first vent hole <NUM> may include at least one vent hole group. Each vent hole group may include a first sub vent hole <NUM> and a second sub vent hole <NUM>. An inner diameter of the first sub vent hole <NUM> is different from an inner diameter of the second sub vent hole <NUM>. In addition, an inner diameter of the third vent hole <NUM> may be greater than the inner diameter of the first sub vent hole <NUM> and the inner diameter of the second sub vent hole <NUM>. When the eartip <NUM> cooperates with the sound outlet <NUM>, the third vent hole <NUM> may be opposite to the first sub vent hole <NUM>, or the third vent hole <NUM> may be opposite to the second sub vent hole <NUM>.

In this way, when the ear canal of the human body is blocked and the occlusion effect is serious, a cooperation relationship between the eartip <NUM> and the sound outlet <NUM> can be adjusted, so that the third vent hole <NUM> is opposite to one with a relatively large inner diameter of the first sub vent hole <NUM> and the second sub vent hole <NUM>, so as to implement a relatively large amount of leakage, thereby alleviating or avoiding the occlusion effect. When the sound quality and the noise reduction effect of the earphone <NUM> are poor, a cooperation relationship between the eartip <NUM> and the sound outlet <NUM> can be adjusted, so that the third vent hole <NUM> is opposite to one with a relatively small inner diameter of the first sub vent hole <NUM> and the second sub vent hole <NUM>, so as to implement a relatively small amount of leakage, thereby improving the sound quality and the noise reduction effect of the earphone <NUM>.

For example, the inner diameter of the first sub vent hole <NUM> is greater than the inner diameter of the second sub vent hole <NUM>. When the eartip <NUM> cooperates with the sound outlet <NUM>, the third vent hole <NUM> may be opposite to the first sub vent hole <NUM>, or the third vent hole <NUM> may be opposite to the second sub vent hole <NUM>. In this way, when the ear canal of the human body is blocked and the occlusion effect is serious, a cooperation relationship between the eartip <NUM> and the sound outlet <NUM> can be adjusted, so that the third vent hole <NUM> is opposite to the first sub vent hole <NUM>, so as to implement a relatively large amount of leakage, thereby alleviating or avoiding the occlusion effect. When the sound quality and the noise reduction effect of the earphone <NUM> are poor, a cooperation relationship between the eartip <NUM> and the sound outlet <NUM> can be adjusted, so that the third vent hole <NUM> is opposite to the second sub vent hole <NUM>, so as to implement a relatively small amount of leakage, thereby improving the sound quality and the noise reduction effect of the earphone <NUM>.

It can be understood that, in some embodiments, referring to <FIG>, the at least one vent hole group may include a first vent hole group <NUM> and a second vent hole group <NUM>, where a line between a first sub vent hole <NUM> in the first vent hole group <NUM> and a first sub vent hole <NUM> in the second vent hole group <NUM> does not intersect a line between a second sub vent hole <NUM> in the first vent hole group <NUM> and a second sub vent hole <NUM> in the second vent hole group <NUM>.

The at least one eartip <NUM> may include a third eartip <NUM> (refer to <FIG>). A side wall of an inner enclosing shell <NUM> of the third eartip <NUM> may be provided with two third vent holes <NUM>. In actual use, when the third eartip <NUM> and the sound outlet <NUM> are in a first cooperation state (refer to <FIG>), the two third vent holes <NUM> are respectively opposite to the two first sub vent holes <NUM>. That is, one of the two third vent holes <NUM> is opposite to the first sub vent hole <NUM> in the first vent hole group <NUM>, and the other of the two third vent holes <NUM> is opposite to the first sub vent hole <NUM> in the second vent hole group <NUM>.

When the third eartip <NUM> and the sound outlet <NUM> are in a second cooperation state (refer to <FIG>), the two third vent holes <NUM> are respectively opposite to the two second sub vent holes <NUM>, that is, one of the two third vent holes <NUM> is opposite to the second sub vent hole <NUM> in the first vent hole group <NUM>, and the other of the two third vent holes <NUM> is opposite to the second sub vent hole <NUM> in the second vent hole group <NUM>.

For example, the inner diameter of the first sub vent hole <NUM> is greater than the inner diameter of the second sub vent hole <NUM>. When the third eartip <NUM> cooperates with the sound outlet <NUM>, the two third vent holes <NUM> may be respectively opposite to the two first sub vent holes <NUM>, or the two third vent holes <NUM> may be respectively opposite to the two second sub vent holes <NUM>. In this way, when the ear canal of the human body is blocked and the occlusion effect is serious, a cooperation relationship between the third eartip <NUM> and the sound outlet <NUM> can be adjusted, so that the third vent hole <NUM> is opposite to the first sub vent hole <NUM>, so as to implement a relatively large amount of leakage, thereby alleviating or avoiding the occlusion effect. When the sound quality and the noise reduction effect of the earphone <NUM> are poor, a cooperation relationship between the third eartip <NUM> and the sound outlet <NUM> can be adjusted, so that the third vent hole <NUM> is opposite to the second sub vent hole <NUM>, so as to implement a relatively small amount of leakage, thereby improving the sound quality and the noise reduction effect of the earphone <NUM>.

That is, in this embodiment of this application, the amount of leakage can be adjusted by wearing the third eartip <NUM> forward and backward, so as to implement flexible switching between different application scenarios such as listening to songs and noise reduction (a small hole is opened, that is, the two third vent holes <NUM> are respectively opposite to the two second sub vent holes <NUM>) and occlusion effect optimization (a large hole is opened, that is, the two third vent holes <NUM> are respectively opposite to the two first sub vent holes <NUM>).

In some other embodiments, referring to <FIG>, the at least one vent hole group may include a first vent hole group <NUM> and a second vent hole group <NUM>, where a line between a first sub vent hole <NUM> in the first vent hole group <NUM> and a first sub vent hole <NUM> in the second vent hole group <NUM> intersects a line between a second sub vent hole <NUM> in the first vent hole group <NUM> and a second sub vent hole <NUM> in the second vent hole group <NUM>.

As shown in <FIG> and <FIG>, the at least one eartip <NUM> may include a fourth eartip <NUM> and a fifth eartip <NUM>. Both a side wall of an inner enclosing shell <NUM> of the fourth eartip <NUM> and a side wall of an inner enclosing shell <NUM> of the fifth eartip <NUM> are provided with two third vent holes <NUM>.

When the fourth eartip <NUM> cooperates with the sound outlet <NUM> (refer to <FIG>), two third vent holes <NUM> on the side wall of the inner enclosing shell <NUM> of the fourth eartip <NUM> are opposite to the two first sub vent holes <NUM>. Specifically, one of the two third vent holes <NUM> on the side wall of the inner enclosing shell <NUM> of the fourth eartip <NUM> is opposite to the first sub vent hole <NUM> in the first vent hole group <NUM>, and the other of the two third vent holes <NUM> is opposite to the first sub vent hole <NUM> in the second vent hole group <NUM>.

When the fifth eartip <NUM> cooperates with the sound outlet <NUM> (refer to <FIG>), the two third vent holes <NUM> on the side wall of the inner enclosing shell <NUM> of the fifth eartip <NUM> are opposite to the two second sub vent holes <NUM>. Specifically, one of the third vent holes <NUM> on the side wall of the inner enclosing shell <NUM> of the fifth eartip <NUM> is opposite to the second sub vent hole <NUM> in the first vent hole group <NUM>, and the other of the two third vent holes <NUM> is opposite to the second sub vent hole <NUM> in the second vent hole group <NUM>.

For example, the inner diameter of the first sub vent hole <NUM> is greater than the inner diameter of the second sub vent hole <NUM>. When the fourth eartip <NUM> cooperates with the sound outlet <NUM>, the two third vent holes <NUM> may be respectively opposite to the two first sub vent holes <NUM>. Alternatively, when the fifth eartip <NUM> cooperates with the sound outlet <NUM>, the two third vent holes <NUM> may be respectively opposite to the two second sub vent holes <NUM>.

In this way, when the ear canal of the human body is blocked and the occlusion effect is serious, the fourth eartip <NUM> cooperates with the sound outlet <NUM>, so that the third vent hole <NUM> is opposite to the first sub vent hole <NUM>, so as to implement a relatively large amount of leakage, thereby alleviating or avoiding the occlusion effect. When the sound quality and the noise reduction effect of the earphone <NUM> are poor, the fifth eartip <NUM> cooperates with the sound outlet <NUM>, so that the third vent hole <NUM> is opposite to the second sub vent hole <NUM>, so as to implement a relatively small amount of leakage, thereby improving the sound quality and the noise reduction effect of the earphone <NUM>.

That is, in this embodiment of this application, the amount of leakage may be adjusted by wearing the fourth eartip <NUM> or the fifth eartip, so as to implement flexible switching between different application scenarios such as listening to songs and noise reduction (a small hole is opened, that is, the fifth eartip <NUM> is used to make the two third vent holes <NUM> respectively opposite to the two second sub vent holes <NUM>) and occlusion effect optimization (a large hole is opened, that is, the fourth eartip <NUM> is used to make the two third vent holes <NUM> respectively opposite to the two first sub vent holes <NUM>).

Other technical features are the same as those in Embodiment <NUM>, and a same technical effect can be achieved.

On the basis of the foregoing Embodiment <NUM> or Embodiment <NUM>, at least two eartips of different lengths may be further designed. Specifically, at least one eartip <NUM> may include a sixth eartip <NUM> and a seventh eartip <NUM>. In specific use, the sixth eartip <NUM> cooperates with a sound outlet <NUM>, or the seventh eartip <NUM> cooperates with the sound outlet <NUM>.

An axial size of the sixth eartip <NUM> is different from an axial size of the seventh eartip <NUM>. It should be noted that the axial size of the sixth eartip <NUM> refers to a size of the sixth eartip <NUM> in an axial direction of the sixth eartip <NUM>; and the axial size of the seventh eartip <NUM> refers to a size of the seventh eartip <NUM> in an axial direction of the seventh eartip <NUM>.

Specifically, for example, the axial size of the sixth eartip <NUM> is greater than the axial size of the seventh eartip <NUM>. <FIG> is a sectional view when the sixth eartip <NUM> cooperates with the sound outlet <NUM>. <FIG> is a sectional view when the seventh eartip <NUM> cooperates with the sound outlet <NUM>.

When the sixth eartip <NUM> cooperates with the sound outlet <NUM>, the sixth eartip <NUM> cooperates with the sound outlet <NUM> to form an earphone <NUM>. Because a length of the sixth eartip <NUM> is relatively long, the earphone <NUM> has good sealing after being worn. When the seventh eartip <NUM> cooperates with the sound outlet <NUM>, the seventh eartip <NUM> cooperates with the sound outlet <NUM> to form an earphone <NUM>. Because a length of the seventh eartip <NUM> is relatively short and an in-ear depth of the earphone <NUM> is relatively shallow, the earphone <NUM> has a large amount of leakage after being worn.

In this way, when an ear canal of a human body is blocked and an occlusion effect is serious, the seventh eartip <NUM> with a relatively short axial size may be used to increase an amount of leakage, thereby alleviating or avoiding the occlusion effect. When sound quality and a noise reduction effect of the earphone <NUM> are poor, the sixth eartip <NUM> with a relatively long axial size and good sealing may be used, thereby improving the sound quality and the noise reduction effect of the earphone <NUM>.

That is, in this embodiment of this application, on a basis of adjusting a cooperation relationship between the eartip <NUM> and the sound outlet <NUM> so that a first vent hole <NUM> located on a housing <NUM> is completely exposed or a relatively small part is shielded, an amount of leakage may be adjusted by wearing the sixth eartip <NUM> or the seventh eartip <NUM> of different axial sizes, so as to implement flexible switching between different application scenarios such as listening, noise reduction, and occlusion effect optimization.

Other technical features are the same as those in Embodiment <NUM> or Embodiment <NUM>, and a same technical effect can be achieved.

An embodiment of this application further provides an earphone <NUM> of another structure. The earphone <NUM> may include a housing <NUM> and at least one eartip <NUM>, and the housing <NUM> is provided with a sound outlet <NUM>. Referring to <FIG> or <FIG>, the at least one eartip <NUM> may include a sixth eartip <NUM> and a seventh eartip <NUM>. The sixth eartip <NUM> may cooperate with the sound outlet <NUM>, or the seventh eartip <NUM> may cooperate with the sound outlet <NUM>.

In this embodiment of this application, an axial size of the sixth eartip <NUM> is different from an axial size of the seventh eartip <NUM>. It should be noted that the axial size of the sixth eartip <NUM> refers to a size of the sixth eartip <NUM> in an axial direction of the sixth eartip <NUM>; and the axial size of the seventh eartip <NUM> refers to a size of the seventh eartip <NUM> in an axial direction of the seventh eartip <NUM>.

Two different eartips <NUM> are disposed, that is, the sixth eartip <NUM> and the seventh eartip <NUM>. The axial size of the sixth eartip <NUM> is different from the axial size of the seventh eartip <NUM>. In specific use, when the eartip <NUM> with a relatively large axial size cooperates with the sound outlet <NUM> to form an earphone <NUM>, because the eartip <NUM> has a relatively long length and has a relatively deep in-ear depth of the earphone <NUM>, the earphone <NUM> has good sealing after being worn. When the eartip <NUM> with a relatively small axial size cooperates with the sound outlet <NUM> to form an earphone <NUM>, because the eartip <NUM> has a relatively small length and a relatively small in-ear depth of the earphone <NUM>, the earphone <NUM> has a relatively large amount of leakage after being worn. In this way, when an ear canal of a human body is blocked and an occlusion effect is serious, the eartip <NUM> with a relatively small axial size can be used to increase an amount of leakage, thereby alleviating or avoiding the occlusion effect. When sound quality and a noise reduction effect of the earphone <NUM> are poor, the eartip <NUM> with a relatively large axial size and good sealing may be used, to improve the sound quality and the noise reduction effect of the earphone <NUM>. Therefore, in this embodiment of this application, the sound quality and the noise reduction effect of the earphone <NUM> are prevented from being affected, and the occlusion effect can be effectively alleviated by using the sixth eartip <NUM> or the seventh eartip <NUM> with different axial sizes.

It can be understood that, in this embodiment of this application, each eartip <NUM> may further include a separator <NUM>, where the separator <NUM> is connected to an inner enclosing shell <NUM>. The separator <NUM> divides the inner enclosing shell <NUM> into a first part <NUM> and a second part <NUM>.

One end that is of the first part <NUM> and that is away from the second part <NUM> is connected to an outer enclosing shell <NUM>, and the second part <NUM> and the separator <NUM> may be enclosed together to form a fitting cavity <NUM>. When the eartip <NUM> cooperates with the sound outlet <NUM>, at least a part of the sound outlet <NUM> is located in the fitting cavity <NUM>. An axial size of the first part <NUM> of the inner enclosing shell <NUM> of the sixth eartip <NUM> is different from an axial size of the first part <NUM> of the inner enclosing shell <NUM> of the seventh eartip <NUM>.

It should be noted that the axial size of the first part <NUM> of the inner enclosing shell <NUM> of the sixth eartip <NUM> refers to a size of the first part <NUM> of the inner enclosing shell <NUM> of the sixth eartip <NUM> in an axial direction of the sixth eartip <NUM>; and the axial size of the first part <NUM> of the inner enclosing shell <NUM> of the seventh eartip <NUM> refers to a size of the first part <NUM> of the inner enclosing shell <NUM> of the seventh eartip <NUM> in an axial direction of the seventh eartip <NUM>.

For example, the axial size of the first part <NUM> of the inner enclosing shell <NUM> of the sixth eartip <NUM> is greater than the axial size of the first part <NUM> of the inner enclosing shell <NUM> of the seventh eartip <NUM>. <FIG> is a sectional view when the sixth eartip <NUM> cooperates with the sound outlet <NUM>. <FIG> is a sectional view when the seventh eartip <NUM> cooperates with the sound outlet <NUM>.

When the sixth eartip <NUM> cooperates with the sound outlet <NUM>, the sixth eartip <NUM> cooperates with the sound outlet <NUM> to form an earphone <NUM>. Because a length of the first part <NUM> of the inner enclosing shell <NUM> of the sixth eartip <NUM> is relatively long, the earphone <NUM> has good sealing after being worn. When the seventh eartip <NUM> cooperates with the sound outlet <NUM>, the seventh eartip <NUM> cooperates with the sound outlet <NUM> to form an earphone <NUM>. Because a length of the first part <NUM> of the inner enclosing shell <NUM> of the seventh eartip <NUM> is relatively short, and an ear penetration depth of the earphone <NUM> is relatively shallow, the earphone <NUM> has a large amount of leakage after being worn.

In this way, when the ear canal of the human body is blocked and the occlusion effect is serious, the seventh eartip <NUM> with a relatively short axial size of the first part <NUM> of the inner enclosing shell <NUM> may be used to increase the amount of leakage, thereby alleviating or avoiding the occlusion effect. When the sound quality and the noise reduction effect of the earphone <NUM> are poor, the sixth eartip <NUM> with a relatively long axial size of the first part <NUM> of the inner enclosing shell <NUM> and good sealing may be used, to improve the sound quality and the noise reduction effect of the earphone <NUM>.

That is, in this embodiment of this application, an amount of leakage may be adjusted by wearing the sixth eartip <NUM> or the seventh eartip <NUM>, so as to implement flexible switching between different application scenarios such as listening, noise reduction (the sixth eartip <NUM> is used and has good sealing after being worn), and occlusion effect optimization (the seventh eartip <NUM> is used and has a large amount of leakage after being worn).

In this embodiment of this application, one of an outer peripheral wall of the sound outlet <NUM> and an inner peripheral wall of the outer enclosing shell <NUM> may be provided with at least one protruding part <NUM>, the other of the outer peripheral wall of the sound outlet <NUM> and the inner peripheral wall of the outer enclosing shell <NUM> may be provided with at least one second groove <NUM>, and the protruding part <NUM> cooperates with the second groove <NUM>. In this way, positions of the sound outlet <NUM> and the eartip <NUM> can be limited, so as to avoid relative position movement of the sound outlet <NUM> and the eartip <NUM> during a cooperation process, and even a problem that the eartip <NUM> falls off from the sound outlet <NUM>.

In some embodiments, at least one opening <NUM> may be further disposed on the separator <NUM>, and the opening <NUM> is configured to output a sound output from the sound outlet <NUM> to an ear of a user. At least one opening <NUM> is disposed on the separator <NUM>, and the opening <NUM> outputs the sound output by the sound outlet <NUM> to the ear of the user, so that energy generated by a speaker in the housing <NUM> is smoothly transmitted to the ear of the user, thereby optimizing a sound production effect of the earphone <NUM>.

In addition, in this embodiment of this application, the housing <NUM> may further include a stem <NUM>, and one end of the stem <NUM> is connected to a side that is of the housing <NUM> and that is away from the sound outlet <NUM>. In this way, a structure of the earphone <NUM> in this embodiment of this application may also be applicable to an earphone <NUM> with the stem <NUM>.

In the descriptions of embodiments of this application, it should be noted that unless otherwise specified and defined explicitly, the terms "mount", "connected to" and "connect" should be understood in a broad sense, and for example, may be a fixed connection or an indirect connection by using an intermediate medium, or may be internal communication between two elements or an interaction relationship between two elements. A person of ordinary skill in the art can understand specific meanings of the foregoing terms in embodiments of this application based on a specific situation.

The device or element referred to in or implied in embodiments of this specification needs to have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on embodiments of this specification. In the descriptions of embodiments of this application, "a plurality of" means two or more, unless otherwise specifically defined.

In the specification of embodiments, claims, and accompanying drawings of this application, the terms "first", "second", "third", "fourth", and the like (if existent) are intended to distinguish between similar objects but do not necessarily indicate a specific order or sequence. It should be understood that the data termed in such a way is interchangeable in proper circumstances, so that embodiments described herein can be implemented in orders except the order illustrated or described herein. In addition, the terms "may include" and "have", and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, a method, a system, a product, or a device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or are inherent to the process, method, product, or device.

Claim 1:
An earphone (<NUM>), comprising at least:
a housing (<NUM>) and an eartip (<NUM>); wherein
the housing (<NUM>) comprises a housing body (<NUM>) and a sound outlet (<NUM>) connected to the housing body (<NUM>), and at least one first vent hole (<NUM>) is disposed on the housing (<NUM>);
the eartip (<NUM>) cooperates with the sound outlet (<NUM>) such that the eartip (<NUM>) is fixedly positioned on the sound outlet (<NUM>) such that it does not fall off of the sound outlet (<NUM>), wherein
the position of the eartip (<NUM>) is adjustable relative to the sound outlet (<NUM>) such that the at least one first vent hole (<NUM>) ranges from being completely exposed to being completely shielded based on a positional adjustment of the eartip (<NUM>) relative to the sound outlet (<NUM>), wherein
the positional adjustment of the eartip (<NUM>) relative to the sound outlet (<NUM>) defines a cooperation state of the eartip (<NUM>) and the sound outlet (<NUM>);
the eartip (<NUM>) comprises an inner enclosing shell (<NUM>), wherein at least one third vent hole (<NUM>) is disposed on the inner enclosing shell (<NUM>);
the at least one first vent hole (<NUM>) comprises at least one vent hole group (<NUM>, <NUM>); each of the at least one vent hole group (<NUM>, <NUM>) comprises a first sub vent hole (<NUM>) and a second sub vent hole (<NUM>); and an inner diameter of the first sub vent hole (<NUM>) is different from an inner diameter of the second sub vent hole (<NUM>);
an inner diameter of the third vent hole (<NUM>) is greater than the inner diameter of the first sub vent hole (<NUM>) and the inner diameter of the second sub vent hole (<NUM>); and
based on the cooperation state of the eartip (<NUM>) and the sound outlet (<NUM>), the third vent hole (<NUM>) is aligned with the first sub vent hole (<NUM>), or the third vent hole (<NUM>) is aligned with the second sub vent hole (<NUM>).