WO2024027456A1 - Earbud and earbud system - Google Patents

Abstract

The present application discloses an earbud and an earbud system. The earbud comprises a housing, a sound nozzle, and a loudspeaker assembly. The housing is provided with an accommodating cavity. The sound nozzle is connected to the housing and is provided with a sound guide channel which communicates with the accommodating cavity. The loudspeaker assembly is partially accommodated in the accommodating cavity. The loudspeaker assembly comprises at least a high-pitch loudspeaker and a sound outlet conduit. One end of the sound outlet conduit is connected to the high-pitch loudspeaker, and the other end of the sound outlet conduit extends into the sound guide channel in the direction facing towards the sound nozzle. The sound outlet conduit is used to transmit sound emitted by the high-pitch loudspeaker to the outside of the sound nozzle via the sound outlet conduit. By means of the described method, the earbud of the present application has good acoustic performance.

Description

Headphones and headphone systems

The three application numbers required to be submitted by this application on August 3, 2022 are 202210931102. ’s Chinese patent application, which is fully incorporated into this application by reference.

【Technical field】

The present application relates to the field of earphone technology, and in particular to an earphone and an earphone system.

【Background technique】

With the continuous development of headphone technology, users have higher and higher requirements for the sound quality and noise reduction function of headphones. In related technology, headphones use active noise reduction to achieve the noise reduction function of the headphones. Since the active noise reduction function requires setting up a microphone to collect environmental noise, it will cause technical problems such as poor acoustic performance of current headphones.

[Content of the invention]

The purpose of this application is to provide earphones and earphone systems that can improve the acoustic performance of the earphones.

In order to solve the above technical problems, a technical solution adopted by this application is:

A headset is proposed. Headphones include a housing, a mouthpiece, and a speaker assembly. A receiving cavity is formed inside the casing. The sound mouth is connected to the shell and has a sound guide channel connected with the accommodation cavity. The speaker assembly is partially received in the containing cavity. Wherein, the speaker assembly at least includes a tweeter and a sound duct. One end of the sound duct is connected to the tweeter, and the other end of the sound duct extends toward the sound mouth into the sound guide channel. The sound duct is used to transmit the sound from the tweeter to the outside of the mouthpiece through the sound duct.

On the other hand, a headphone system is also proposed. The earphone system includes a charging box and at least one earphone mentioned above. The charging box is used to accommodate the earphone and charge the earphone after the earphone is placed in the charging box.

The beneficial effects of this application are: different from the prior art, a speaker assembly is provided in the housing cavity to enable the earphones to produce sound, and the sound conduit for transmitting the sound emitted by the tweeter is extended. into the sound guide channel, so that the high-pitched sound emitted by the speaker component can spread outward through the sound duct with high quality and smoothness, thereby reducing the interference of the sound emitted by the speaker component from other components inside the headset, thereby improving the acoustic performance of the headset.

[Picture description]

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. Furthermore, these drawings and text descriptions are not intended to limit the scope of the concepts of the present application in any way. The concepts of this application will be explained to those skilled in the art by reference to specific embodiments.

Figure 1 is a schematic structural diagram of an embodiment of the headphone system of the present application;

Figure 2 is a schematic structural diagram of an embodiment of the earphone of the present application;

Figure 3 is a schematic structural diagram of an embodiment of the ear cap of the present application;

Figure 4 is a schematic cross-sectional structural diagram of the ear cap along the A-A section line shown in Figure 3;

Figure 5 is a structural schematic diagram of the force deformation of the ear cap shown in Figure 3;

Figure 6 is another structural schematic diagram showing the force deformation of the ear cap shown in Figure 3;

Figure 7 is a schematic diagram of the structural and morphological changes of the ear cap shown in Figure 3 before being inserted into the ear canal and after being inserted into the ear canal;

Figure 8 is another structural schematic diagram of an embodiment of the ear cap of the present application.

Figure 9 is a partial structural diagram of the earphone shown in Figure 2;

Figure 10 is an enlarged schematic diagram of the partial structure shown in Figure 9;

Figure 11 is a schematic structural diagram of another embodiment of the earphone shown in Figure 2;

Figure 12 is a schematic structural diagram of an embodiment of the earphone shown in Figure 11;

FIG. 13 is a schematic structural diagram of an embodiment of the earphone shown in FIG. 11 .

【Detailed ways】

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

In related technology, headphones will have an active noise reduction function. The active noise reduction function collects external environmental noise through the microphone, and then uses the system to emit sound waves with the opposite phase to the noise and interfere with the noise to achieve phase cancellation. The headset's active noise cancellation feature uses a microphone component to pick up ambient noise. If the microphone assembly is installed in the casing of the headset, the size of the casing will be increased and the wearing comfort will be affected. If the microphone component is placed in the sound output channel of the headset, it will block the sound output and affect the acoustic performance. In order to solve the above technical problems, this application provides at least the following embodiments.

As shown in FIG. 1 , the earphone 20 of the present application can form an earphone system 1 through at least one earphone 20 and other components. The earphone system 1 described in one embodiment can include at least two earphones 20 . The headphone system 1 is, for example, a TWS (true wireless) headphone system 1 shown in FIG. 1 , a neck-mounted wireless headphone system, a wired headphone system, or the like.

The following description takes the headphone system 1 as the TWS headphone system 1 as an example.

As shown in FIG. 1 , the TWS earphone system 1 may include a charging box 10 and two earphones 20 . The charging box 10 is used to accommodate the earphones 20 and charge the earphones 20 after the earphones 20 are placed in the charging box 10 . Optionally, the charging box 10 may include a box body 11 and a box cover 12 that are connected to each other. The box body 11 is provided with two receiving slots 110 , and the number of receiving slots 110 and the number of earphones 20 may be the same. The receiving groove 110 is used to receive the earphone 20 . The box cover 12 is rotatably/slidably connected to the box body 11 for selectively covering the receiving groove 110 . For example, the box cover 12 is rotatably connected to the box body 11 through a rotating shaft to achieve a flip-top design. For example, the box cover 12 can slide relative to the box body 11 through the cooperation of the slide rail and the slide block, thereby achieving a sliding cover design.

The charging box 10 can charge the earphone 20. When the earphone 20 is received in the receiving slot 110, it can be electrically connected to the earphone 20, thereby charging the earphone 20. For example, charging contacts (not shown) may be provided in the receiving groove 110 , and charging contacts (not shown) may be provided on the earphones 20 accordingly. When the earphone 20 is placed in the receiving slot 110, the charging contacts of the earphone 20 and the charging contacts of the charging box 10 can be in contact to achieve electrical connection. Of course, the charging box 10 and the earphones 20 can also be charged wirelessly. The charging box 10 can be structurally and/or electrically connected to the earphones 20 through magnetic attraction. When the earphones 20 are placed in the accommodating groove 110, the charging box 10 and the earphones 20 are magnetically attracted.

The charging box 10 can be provided with a prompt component 111, such as a display screen or an LED light, which can be used to prompt corresponding information, such as battery Quantity etc. The charging box 10 can also be provided with a charging interface (not shown), such as a USB interface, TYPE-C interface, MIN-USB interface, and Lighting interface.

The two earphones 20 can be divided into main and auxiliary earphones 20 . The main earphone 20 can communicate with an external device, for example, communication can be achieved through Bluetooth technology. External devices can be, for example, mobile phones, tablets, smart watches, laptops, etc. The auxiliary earphone 20 can communicate with the main earphone 20, and the data sent by the external device can be sent to the main earphone 20 and simultaneously sent to the auxiliary earphone 20 through the main earphone 20, so that the main and auxiliary earphones 20 can receive the data synchronously as much as possible.

For relevant content of the earphone 20 of this embodiment, please refer to the following detailed description of an embodiment of the earphone of this application.

An embodiment of the earphone 20 of the present application describes at least one exemplary structure of the earphone 20 .

Referring to FIG. 2 , the earphone 20 includes a housing 21 , a mouthpiece 22 and a speaker assembly 30 . An accommodating cavity 211 is formed in the housing 21 . The accommodating cavity 211 can accommodate various acoustic components and electrical components. The structure of the accommodating cavity 211 itself can also form an acoustic cavity to improve the quality of the sound output by the earphone 20 . For example, the accommodation cavity 211 can accommodate the speaker assembly 30 , Bluetooth components used to implement Bluetooth communication, and conductive elements, such as circuit boards or wires, used to electrically connect other components or devices. The sound mouthpiece 22 is connected to the housing 21 and has a sound guide channel 221 connected with the accommodation cavity 211. The sound mouthpiece 22 can also be called an ear mouth, and is used to transmit the sound emitted by the speaker assembly 30 in the earphone 20 through the sound guide channel 221. outside world.

Optionally, the earphone 20 includes an ear cap 23, which is detachably sleeved on the outer periphery of the mouthpiece 22. For example, the ear cap 23 may be a transparent ear cap. The ear cap 23 will be squeezed laterally by the ear canal and produce a certain deformation. When the user wears the earphone 20, the ear cap 23 can extend into the user's ear canal, and due to its deformation characteristics, the earphone 20 can be worn on the user's ear relatively stably. Moreover, the ear cap 23 can block the user's ear canal and can achieve a better passive noise reduction effect.

Regarding the relevant content of the above-mentioned ear cap 23, please refer to the following detailed description of the embodiment of the ear cap 23 of the present application.

The ear cap embodiments of the present application describe at least one exemplary structure of the ear cap 23.

As shown in FIGS. 3 to 6 , the ear cap 23 may include a cap post 231 and a cap cover 232 . The cap post 231 and the cap sleeve 232 are connected to each other.

As shown in FIG. 4 , the cap post 231 may be provided with sound channels 2311 running through both ends of the cap post 231 , as well as channel exits 2312 and channel inlets 2313 respectively provided at both ends of the cap post 231 . In other words, the sound channel 2311 may have a channel outlet 2312 and a channel inlet 2313 at both ends of the cap post 231 . The mouthpiece 210 of the earphone body 20 can be inserted into the sound output channel 2311 through the channel inlet 2313.

Optionally, the shape of the sound channel 2311 in a cross section perpendicular to its length direction may be circular, racetrack-shaped, or other shapes.

Alternatively, the cross-sectional area of the sound channel 2311 in the above-mentioned cross-section may first remain unchanged in the direction from the channel inlet 2313 to the channel outlet 2312, and then gradually decrease, while the cross-sectional area of the channel outlet 2312 is the smallest. Taking the cross-sectional shape of the sound channel 2311 as a circular example, in the direction from the channel entrance 2313 to the channel outlet 2312, the diameter of the sound channel 2311 is the largest at the channel entrance 2313, and then maintains the maximum diameter in the length direction of the cap post 231. After the diameter remains constant for a certain length, it gradually becomes smaller, and the diameter of the channel outlet 2312 is the smallest. Of course, the sound output channel 2311 can also have the largest cross-sectional area at any preset position between the channel entrance 2313 and the channel outlet 2312. For example, an annular slot (not shown) can be further provided in the sound output channel 2311. The mouthpiece 210 may be provided with a clamping block (not shown) that matches the annular slot. When the mouthpiece 210 is inserted into the sound output channel 2311, the clamping block and the annular slot are engaged.

As shown in FIG. 4 , the cap cover 232 can be set on the outer periphery of the cap post 231 . Specifically, the cap cover 232 may include a cover body 2321 and a connecting portion 2322. The sleeve body 2321 can be sleeved on the outer periphery of the cap post 231 . The sleeve body 2321 is, for example, arranged in an annular body, and may further be arranged in an umbrella-shaped annular body with an open top. The first end of the sleeve body 2321 may be provided with sound guide holes 2323 that are opposite to the channel outlet 2312 and spaced apart from each other. The sound generated by the earphone 20 can be transmitted to the outside world through the channel outlet 2312 and the sound guide hole 2323. When worn to the user's ear canal, the sound can be transmitted to the user's ear canal through the sound guide hole 2323. The second end of the sleeve body 2321 (ie, the end away from the sound guide hole 2323) may have openings 2324 that are opposite to the channel inlet 2313 and spaced apart from each other. In other words, the sleeve body 2321 can be sleeved on the outer periphery of the cap post 231 , and the cap post 231 is located between the sound guide hole 2323 and the opening 2324 . The opening 2324 can expose the channel entrance 2313, and the mouthpiece 210 can be inserted into the channel entrance 2313 from the opening 2324, and then fixed with the cap post 231, thereby realizing the installation of the ear cap 23 on the earphone 20.

The user can wear the earphones 20 with the ear caps 23 attached to their ears. When the earphone 20 is inserted into the user's ear canal, the cover body 2321 can deform against the user's ear canal, and there is friction between the cover body 2321 and the ear canal, which can better maintain the stability of the earmuff, thereby enhancing the earphone. 20 is stable to wear.

As shown in FIG. 4 , the connecting portion 2322 is connected between the cap post 231 and the sleeve body 2321 . Specifically, the first end of the connecting portion 2322 is connected to the cap post 231, and further, the first end of the connecting portion 2322 is connected to the first end of the cap post 231 (ie, the end where the channel outlet 2312 is provided). Specifically, the second end of the connecting part 2322 is connected between the two ends of the sleeve body 2321. Optionally, the second end of the connecting portion 2322 is located in the middle section of the sleeve body 2321. For example, the middle section can be an interval portion of 1/3 to 2/3 of the length of the sleeve body 2321 along its length direction. The wall body (for example, the first wall body 23211) of the sleeve body 2321 located between the sound guide hole 2323 and the connection part 2322, and the connection part 2322 enclose a buffer space 2325 that communicates with the channel outlet 2312 and the sound guide hole 2323. , so that the cap cover 232 can move and/or deform relative to the cap post 231 to adapt to different ear canal structures. In other words, the channel outlet 2312 and the sound guide hole 2323 are spaced apart and stacked, and there is a gap between them surrounded by the first wall 23211 and the connecting portion 2322. The sleeve 2321 is located between the sound guide hole 2323 and the connecting portion 2322 to form a “folded structure” between the first wall 23211 and the connecting portion 2322, and this “folded structure” forms the buffer space 2325.

Because the sleeve body 2321 is sleeved on the outer periphery of the cap post 231. Therefore, a portion of the wall of the sleeve 2321 between the connecting portion 2322 and the opening 2324 (for example, the second wall 23212) and the cap post 231 are spaced apart from each other to form a support space 2326. The support space 2326 can allow deformation between the portion of the sleeve 2321 near its second end and the cap post 231, that is, lateral deformation. When being worn, the portion of the sleeve body 2321 close to its second end is squeezed toward the cap post 231. Due to this deformation, the cover body 2321 generates a corresponding force on the user's ear canal in the lateral direction, and then resists the user's ear canal.

The first end of the connecting part 2322 is connected to the cap post 231, and the second end of the connecting part 2322 is connected between the two ends of the sleeve body 2321. The sleeve body 2321 is located on the first wall between the sound guide hole 2323 and the connecting part 2322. A buffer space 2325 connecting the channel outlet 2312 and the sound guide hole 2323 is enclosed between the body 23211 and the connecting portion 2322. The buffer space 2325 can form a buffer area/deformation area between the channel outlet 2312 and the sound guide hole 2323, so that The ear cap 23 has better adaptability to the ear canal. For example, the deformability of the ear cap 23 in its height direction (that is, the insertion direction) can be effectively increased, so that the height of the ear cap 23 can adapt to the structure of the ear canal. Different and adaptive changes occur, and the position and orientation of the sound guide hole 2323 can adapt to the ear canal structure and produce corresponding changes, thereby being able to adapt to various ear canal structures of a wider range of users, and due to the adaptive ear canal structure When adaptive deformation occurs, after the earphone 20 with the ear cap 23 is worn, the adaptive deformation of the ear cap 23 can better resist the user's ear canal, and the cover body 2321 of the ear cap 23 is in contact with the ear canal. The enlarged area and closer contact improve the wearing stability and sealing of the ear cap 23 and the earphone 20, and improve the noise reduction effect. At the same time, the adaptive deformation of the ear cap 23 can also improve the wearing comfort.

Optionally, the first end of the connecting portion 2322 is connected to the first end of the cap post 231 , that is, connected to the end of the cap post 231 where the channel outlet 2312 is opened. As shown in FIG. 4 , in a cross section passing through the central axis of the cap post 231 , the angle α between the line between the first end and the second end of the connecting portion 2322 and the central axis of the cap post 231 is 0°. ~180°. That is, the range of the included angle α is 0° to 180°. In this embodiment, 0°˜180° may refer to greater than 0° and less than 180°. The same applies to other numerical ranges mentioned in this embodiment.

The included angle α is the included angle of the ear cap 23 in its natural state of not being worn or squeezed. In this embodiment, the included angle α refers to the included angle between the connecting portion 2322 and the central axis of the cap post 231 . The central axis of the cap post 231 may refer to the geometric center/geometry of the channel outlet 2312 and the channel inlet 2313 at the same time. The axis of the center of gravity may also refer to the axis of symmetry of the cap post 231 or the like. The connecting portion 2322 can be a truncated cone with a central axis and open at both ends. In this case, the generatrix of the truncated cone is a straight line; in other embodiments, the generatrix can be a curve, such as a wavy curve, then the connecting portion 2322 is The bus bar is a curve and a three-dimensional structure formed by rotating the bus bar around its central axis. At this time, the angle formed between the straight line formed by connecting the first end and the second end of the connecting portion 2322 and the central axis of the cap post 231 can be used as Angle α.

The value range of the angle α can further be selected from 0° to 80°, or from 10° to 70°, or from 10° to 50°, or from 0° to 40°, or optionally 0°～170°, or optionally 10°～150°, or optionally 10°～80°, or optionally 100°-180°, or optionally 30°～120°, or optional It is 60°～110°.

By setting the angle α between the connecting portion 2322 and the central axis of the cap post 231 to be 0° to 180°, not only the buffer space 2325 is effectively ensured formation, and also enables the cover body 2321 to be deformed quickly and flexibly when being squeezed laterally, so that the ear cap 23 can better adapt to the ear canal and be worn more stably, and the connection set in this way The portion 2322 can be easily deformed after being squeezed in the insertion direction, and can deform better with the deformation of the buffer space 2325, further enhancing the adaptability of the ear cap 23 to the ear canal from multiple dimensions, and improving the wearing ability. Stability and comfort.

As shown in FIG. 4 , the thickness d of the connecting portion 2322 may range from 0.01 mm to 2 mm, and mm represents millimeters. Optionally, the thickness d of the connecting portion 2322 ranges from 0.03 mm to 0.8 mm. Optionally, the thickness d of the connecting portion 2322 ranges from 0.05 mm to 0.6 mm. Optionally, the thickness d of the connecting portion 2322 ranges from 0.1 mm to 0.9 mm. Optionally, the thickness d of the connecting portion 2322 ranges from 0.2 mm to 0.7 mm. Optionally, the thickness d of the connecting portion 2322 ranges from 0.9 mm to 1.5 mm. Optionally, the thickness d of the connecting portion 2322 ranges from 1 mm to 1.8 mm. Optionally, the thickness d of the connecting portion 2322 ranges from 1.2 mm to 1.7 mm. Optionally, the thickness d of the connecting portion 2322 ranges from 0.3 mm to 0.6 mm. The thickness d of the connecting portion 2322 may refer to its average thickness, or may refer to its minimum thickness or maximum thickness.

Setting the thickness d of the connecting part 2322 to a value range of 0.01 mm to 2 mm can improve the flexibility of the deformation or movement of the connecting part 2322, so that when the ear cap 23 is squeezed laterally, the connecting part 2322 can be more free, flexible and flexible. Easily deform, making the folded structure more susceptible to deformation, which can effectively change the direction of the sound guide hole 2323, effectively enhance the adaptive performance for different ear canals, and can also effectively cooperate with the cover body 2321 to produce lateral movement. More stable resistance further improves wearing stability and sealing performance, and when the ear cap 23 is squeezed in the insertion direction (that is, the direction of insertion into the ear canal, which can also be considered as the height direction), the buffer space 2325 is compressed, The connecting portion 2322 can deform accordingly, thereby increasing the amplitude and degree of freedom of deformation, further better adapting to the ear canal, and further improving the sealing and stability of wearing.

Of course, the thickness d of the connecting part 2322 can be structurally designed in conjunction with the soft rubber hardness of the connecting part 2322. For example, when the thickness d is greater than 0.5 mm, the soft rubber hardness of the connecting part 2322 can be less than 40A, where A represents Shore hardness, which is optional. It is less than 30A, which can not only ensure the structural strength, but also ensure the softness and toughness of the connecting part 2322, thereby enhancing the adaptive performance of the structure.

As shown in FIG. 4 , the vertical distance f between the second end of the connecting portion 2322 and the outer wall surface of the cap post 231 may range from 0.3 mm to 3 mm. Optionally, the vertical distance f may range from 0.6 mm to 2.2 mm. Optionally, the vertical distance f can range from 0.6mm to 2.5mm. Optionally, the vertical distance f may range from 0.7 mm to 2.4 mm. Optionally, the vertical distance f may range from 0.8 mm to 2 mm.

By setting the vertical distance f to the above numerical range, the ability of the connecting part 2322 to adapt to changes after being inserted into the ear canal can be enhanced, making the connecting part 2322 easier to deform and the buffering space 2325 to be larger and vertical. The connecting portion 2322 whose distance f is within the above numerical range can match the size of the ear canal of most people, and has better adaptability and comfort.

Furthermore, in this embodiment, the included angle α can be set to a range of 40° to 70°, and the vertical distance f can be set to a range of 0.5mm to 2.7mm. The connecting portion 2322 can have better deformation flexibility, and further The adaptability function is enhanced, and the vertical distance f ranges from 0.5mm to 2.7mm, which allows the overall size of the ear cap 23 to meet the ear canal size of most users and better fit the user's ears. channel to improve sealing and noise reduction performance. Optionally, this embodiment can also set the included angle α to a value range of 50° to 72°, and the vertical distance f to a value range of 0.6 mm to 2.6 mm, which can further enhance the adaptive function. Optionally, this embodiment can also set the included angle α to a value range of 50° to 70°, and the vertical distance f to a value range of 0.6 mm to 2.5 mm, which can further enhance the adaptive function.

In this embodiment, the included angle α can be set to be greater than 90°, and the vertical distance f ranges from 0.4 mm to 2.9 mm. The connecting portion 2322 can have better deformation flexibility and further enhance the adaptability function.

In some embodiments, the connecting portion 2322 may be provided in the form of an annular body, its first end may be connected to the first end of the cap post 231 along its circumferential direction, and its second end may be connected to the sleeve body 2321 along its circumferential direction. In this way, the connecting portion 2322 and the cap post 231 separate the sound guide hole 2323 and the opening 2324 of the cover body 2321 on both sides. The side of the connecting portion 2322 facing the buffer space 2325 can be used to carry dust or other dirt, such as earwax, etc. This reduces the probability of earwax falling into the sound nozzle 210, improves cleanliness, reduces long-term corrosion and clogging of the sound nozzle 210, and facilitates cleaning.

Optionally, the connecting portion 2322 is a trumpet-shaped integrated structure provided around the cap post 231 to divide the cap sleeve 232 and the cap post 231 into There are two independent cavities, one is the buffer space 2325, and the other is the support space 2326 away from the buffer space 2325.

In other embodiments, the number of connecting portions 2322 may be multiple. The multiple connecting portions 2322 are connected around the cap pillar 231 along the circumferential spacing of the cap pillar 231 between the cap pillar 231 and the sleeve body 2321 . The multiple connecting portions 2322 radiates or diverges outward from the cap post 231. For example, each connecting portion 2322 may be in a rod shape or in a sheet shape. While supporting the cap post 231 and the sleeve body 2321, the connecting portion 2322 can also be used to carry at least part of dust, earwax, etc.

As mentioned above, the sound guide hole 2323 and the channel outlet 2312 are arranged oppositely. Optionally, as shown in FIG. 3 , the cap post 231 is provided with a first end of the channel outlet 2312 , and the orthographic projection of at least part of the connecting portion 2322 on the plane where the sound guide hole 2323 is located is located in the sound guide hole 2323 to guide sound through the sound guide hole 2323 . The hole 2323 exposes the first end of the cap post 231 provided with the channel outlet 2312 and at least a portion of the connection portion 2322 .

Optionally, the area of the sound guide hole 2323 is larger than the area of the channel outlet 2312, so that at least part of the first end of the cap post 231 and/or at least part of the connecting portion 2322 can be exposed through the sound guide hole 2323. The area of the sound guide hole 2323 is larger than the area of the channel outlet 2312, so that at least part of the first end of the cap post 231 and/or at least part of the connecting portion 2322 can be exposed through the sound guide hole 2323, and after these parts are exposed, they can This allows dust, earwax, etc. that enter through the sound guide hole 2323 to fall into the buffer space 2325, or enter the buffer space 2325 through the exposed part of the first end of the cap post 231, and then be carried on the connecting part 2322 or the first wall 23211 to reduce dust, earwax, etc. falling onto the mouthpiece 210. Of course, in other embodiments, the area of the sound guide hole 2323 may be smaller than or equal to the area of the channel outlet 2312, as long as the first end of the cap post 231 and at least part of the connecting portion 2322 can be exposed through the sound guide hole 2323.

As shown in FIG. 3 , the projection of the channel outlet 2312 on the plane where the sound guide hole 2323 is located falls into the sound guide hole 2323 . Such an arrangement allows the sound guide hole 2323 to face a part of the cap post 231 and/or a part of the connecting portion 2322 within the corresponding range inside the ear cap 23, which can be exposed through the sound guide hole 2323, thereby making dust, earwax, etc. more likely to fall out. Fall on the cap post 231 and/or the connecting portion 2322 around the sound guide hole 2323, so that the connecting portion 2322 can better bear dust, earwax, etc. that fall into the buffer space 2325.

Optionally, the sound guide hole 2323 and the channel outlet 2312 are coaxially arranged. For example, the axis of the sound guide hole 2323 may refer to an axis that passes through the geometric center/geometric center of gravity of the sound guide hole 2323 and is perpendicular to the plane where the sound guide hole 2323 is located. Similarly, the axis of the channel outlet 2312 may refer to the axis that passes through the geometric center/geometric center of gravity of the channel outlet 2312 and is perpendicular to the plane where the channel outlet 2312 is located. Furthermore, the sound guide hole 2323 and the channel outlet 2312 are coaxially arranged with the central axis of the cap post 231 as the axis. That is, the axis of the sound guide hole 2323 and the channel outlet 2312 both coincide with the central axis of the cap post 231 .

As shown in Figure 4, the vertical distance g between the plane where the sound guide hole 2323 is located and the plane where the channel outlet 2312 is located can range from 0.7 mm to 2.5 mm. Optionally, the vertical distance g may be 0.8mm～2.3mm. Optionally, the distance g may be 0.92mm~2.26mm. Optionally, the vertical distance g may be 1 mm to 2.2 mm. Optionally, by setting the above distance g, the buffer space 2325 can provide excellent compressibility in the axial direction, making the deformation easier and freer, with better adaptive effect, and effectively reducing the ear cap when worn. 23, the discomfort caused by the forced squeezing of the ear canal, and the above distance g will neither make the volume of the buffer space 2325 too large and affect the acoustic performance, nor will it make the volume of the buffer space 2325 too small and affect the acoustic performance. The wearing comfort and adaptive performance will not cause earwax and other dirt to clog the opening of the buffer space 2325. As shown in Figure 5, when the buffer space 2325 is compressed in the axial or radial direction, the vertical distance g will decrease, and the size of the buffer space 2325 will also change accordingly to adapt to different structures of different ear canals and/or Size and other characteristics to achieve an adaptive effect.

Optionally, in the case of coaxial arrangement, the area of the sound guide hole 2323 is larger than the area of the channel outlet 2312, or it can be said that the radial maximum size of the sound guide hole 2323 is larger than the radial maximum size of the channel outlet 2312. Optionally, the ratio of the area of the sound guide hole 2323 to the area of the channel outlet 2312 can be 1.05 to 3, so that the buffer space 2325 can better play a role in storing dust, earwax, etc., and can effectively reduce earwax. etc. fall into the channel outlet 2312, thereby reducing the impact of earwax on the sound effect due to blocking the channel outlet 2312, and the folding structure formed by the connection portion 2322 can facilitate the enclosure of the cover body 2321 to form a buffer space 2325 The part is folded toward the outside, so that it can clean earwax, dust, etc., and the operation is simple and fast.

For example, the sound guide hole 2323 and the channel outlet 2312 are both circular, and the diameter of the sound guide hole 2323 is larger than the diameter of the channel outlet 2312. Further, the ratio of the diameter of the sound guide hole 2323 to the diameter of the channel outlet 2312 may be 1.05˜2.7. This will remove dust and earwax It is easier for the dust, earwax, etc. to fall onto the cap post 231 and/or the connecting portion 2322 around the sound guide hole 2323, so that the connecting portion 2322 can better bear the dust, earwax, etc. that fall into the buffer space 2325.

From the above description, it can be known that the buffer space 2325 and the connecting portion 2322 can carry earwax and can hide the earwax. The ear cap 23 can be detached from the mouthpiece 210, so the ear cap 23 can be easily cleaned, so it can be considered that the ear cap 23 has the function of preventing earwax.

In this embodiment, the material of the ear cap 23 may be silica gel, or the material of the ear cap 23 may include silica gel. The cap post 231 and the cap sleeve 232 can be integrally formed, or they can have a separate structure and be connected later.

Based on the above description, as shown in Figure 5, the ear cap 23 of this embodiment can achieve multi-dimensional deformation in the height direction (the central axis of the cap post 231 in Figure 4) and the lateral direction (the direction perpendicular to the height direction). In turn, it can better adapt to different ear canal structures, making the wearing stability and sealing better. The adaptive function of the ear cap 23 will be further described below from the perspective of different ear structures.

For ears with smaller concha cavities: Wearing an ear cap as mentioned in Related Art may press against the antitragus. When the ear cap 23 described in this embodiment is worn, the shape of the ear cap 23 deforms with force. The sleeve body 2321 and the connecting portion 2322 are simultaneously stressed, causing the buffer space 2325 to move or deform accordingly, thereby shortening the distance between the ear cap 23 and the ear cap 23 . The effective length of the tragus contact is shortened, which can reduce the possibility of against the tragus, making the wearing more comfortable.

For ears with moderate concha cavity: When the ear cap 23 described in this embodiment is inserted into the ear canal, the cover body 2321 and the connecting portion 2322 generate at least two forces on the ear canal: one is the force generated by the deformation in the height direction; The second is the force generated by lateral deformation, which ensures the stability and sealing of wearing while improving comfort under the action of the two forces.

For ears with larger concha cavities: After wearing, since most of the stress points between the earphone 20 and the ear are at the ear cap 23, the ear cap may easily fall off as mentioned in the related art. After the ear cap 23 of this embodiment is worn, it can generate two forces, thereby fitting more closely with the ear canal, and the greater friction force makes the earphone 20 less likely to fall off when worn.

Through the above description, as shown in Figure 5, due to the provision of the connecting portion 2322, a buffer space 2325 is formed between the cover body 2321 and the connecting portion 2322, so that the ear cap 23 can not only deform laterally, but also deform in the height direction. , the force generated by the deformation in two different directions on the ear canal pair can better resist the ear canal, greatly enhancing the adaptability to the ear canal and improving wearing stability and comfort.

Moreover, as shown in FIG. 6 , since the ear cap 23 can be deformed laterally and in the height direction, during the actual insertion process into the ear canal, it can comprehensively utilize multiple dimensions of deformation to adapt to the ear canal. For example, the ear cap 23 If the buffer space 2325 can be partially deformed and partially not deformed or the deformation amplitude is small, the buffer space 2325 can assume a shape similar to an "incline", thereby changing the direction of the sound guide hole 2323. For example, a part of the wall of the sleeve 2321 located around the sound guide hole 2323 is squeezed, while other parts are not squeezed or are slightly squeezed, which can cause the buffer space 2325 to assume a "tilted" shape, thereby changing the shape of the sound guide hole 2323. Orientation etc. For example, one side of the cover body 2321 is pushed upward in the height direction, or one side is subjected to downward pressure in the height direction. The forces on both sides of the cover body 2321 are unbalanced, and the buffer space 2325 can take on a "tilted" shape. .

As shown in FIG. 7 , FIG. 7 illustrates the structural form of the ear cap 23 before entering the ear canal and the structural form after entering the ear canal. When the ear cap 23 enters the ear canal, it will first be squeezed by the ear canal, and may be compressed in the lateral and/or height directions, and the deformation in the two dimensions can allow the ear cap 23 to change freely, and then It can better adapt to the ear canal structure. The position and direction of the sound guide hole 2323 changes in compliance with the ear canal structure and is better oriented into the ear canal. Moreover, the multi-dimensional deformation can make the ear cap 23 closer to the ear canal and more stable to wear. , the sealing effect is better.

As mentioned previously, the included angle α can range from 0° to 180°. FIG. 4 illustrates an exemplary structure of the ear cap 23 with an included angle α less than 90°. Figure 8 illustrates an exemplary structure of the ear cap 23 with an included angle α greater than 90°.

When the angle α is less than 90°, the connection position between the connecting portion 2322 and the sleeve body 2321 is relatively moderate, and the sleeve body 2321 can be supported in a relatively balanced manner, so that the balance and stability of the structure are better, and the second wall can be effectively limited. The body 23212 is everted toward the first wall 23211 side.

When the included angle α is greater than 90°, the connection position of the connecting portion 2322 and the sleeve body 2321 is closer to the sound guide hole 2323 than in a structure where the included angle α is less than 90°.

In this case, in order to improve the restriction effect on the eversion of the second wall 23212 toward the first wall 23211, this embodiment may further provide the following structure:

The ear cap 23 further includes support ribs 233 . The support ribs 233 are provided on the side of the second wall 23212 facing the support space 2326, that is, the side of the second wall 23212 facing the cap post 231, for supporting and strengthening the second wall 23212. One end of the support rib 233 can abut against the connection between the connecting portion 2322 and the second wall 23212 , and the other end of the support rib 233 can extend toward the edge of the second wall 23212 in the direction of the opening 2324 . Optionally, the cross-sectional area of the support rib 233 on a plane perpendicular to the axial direction of the cap post 231 gradually decreases along its extension direction, which can effectively strengthen the restriction effect on the valgus of the second wall 23212. Optionally, the number of support ribs 233 may be multiple, and the multiple support ribs 233 are arranged at intervals along the circumference of the sleeve body 2321 .

In this case, in order to improve the adaptive effect of the buffer space 2325, this embodiment further adopts the following exemplary means:

The soft rubber hardness of the connecting part 2322 is less than or equal to 40A, and optionally less than or equal to 30A. That is, if the included angle α is greater than 90°, the soft hardness of the connecting portion 2322 may be less than or equal to 40A. Further, the soft rubber hardness of the sleeve body 2321 and the connecting portion 2322 is less than or equal to 40A, and optionally less than or equal to 30A.

Regardless of whether the included angle α is greater than 90° or less than 90°, the ear cap 23 can have good and effective ear canal adaptability characteristics, and can effectively and better adapt to various ear canal structures.

Based on the above structural description of this embodiment, the effect of this embodiment is further explained:

In this embodiment, the connecting portion 2322 is provided to connect the sleeve body 2321 and the cap post 231, and the connecting portion 2322 is connected between the two ends of the sleeve body 2321 and forms a buffer space 2325, which can effectively change the internal support structure of the ear cap 23. , forming a buffer space 2325 at the top to enhance the air buffer zone and reduce the intrusive feeling when wearing. Moreover, the support structure of the connecting portion 2322 to the sleeve body 2321 improves the tight support and angle self-deformation adjustment of the sleeve body 2321 in the ear canal, and does not affect the sound transmission direction of the acoustic sound channel tube. The acoustic sealing passive performance is improved from both directions of airtightness and support adaptive angle, and the buffer space 2325 at the top enables the ear cap 23 to adapt to different ear canal shapes and sizes, thereby improving wearing comfort.

Specifically, the setting of the buffer space 2325 can increase the air buffer zone at the top and lengthen the buffer elastic zone, which can effectively adjust the ear depth and stable support position when worn to the ear canal. For the ear cap 23, it is mainly the external auditory canal. support. The lengthened air buffer will make up for the length of different ear canals in the insertion direction (that is, the height direction) to stably support the external auditory canal, so as to make up for the gap between the top and the external auditory canal in the insertion direction in most cases and better support the external auditory canal. , also because of its elastic properties, it can produce elastic compression, better adapt to different external auditory canal structures, while taking into account stability and wearing comfort.

In addition to forming the buffer space 2325, providing the connecting portion 2322 can also bring further unexpected effects to the ear cap 23, several of which are exemplified below:

1. Due to the supporting effect of the connecting portion 2322 on the sleeve body 2321, whether the ear cap 23 is worn into the ear canal or the ear cap 23 is pulled out from the ear canal, the sleeve body 2321 can deform stably, making the sleeve body 2321 less likely to fall out. turn. Especially when the earphones are pulled out from the ear canal, the support position of the connecting portion 2322 in this embodiment is between the two ends of the cover body 2321, which will enhance the ability of the cover body 2321 to overcome the negative pressure suction force and prevent deformation and eversion.

2. Due to the supporting function of the connecting portion 2322, there is a lateral support between the sleeve body 2321 and the cap post 231. The axis rotation angle of the cover body 2321 (rotated through the connecting portion 2322) is larger than that of ordinary ear caps. The rotation axis of the ordinary ear cap is at the top, while the rotation axis of the ear cap 23 in this embodiment is roughly in the middle (or around the connection point between the connecting portion 2322 and the cap post 231), so that the angle of the adaptive external auditory canal is much larger than that of the ear cap 23. The angle that ordinary ear caps can produce improves adaptive performance.

3. Due to the setting of the connecting part 2322, the ear cap 23 with different wearing experiences can be designed by setting the thickness d of the connecting part 2322. The designability is strong, and the existence of the connecting part 2322 can greatly enrich the design of the ear cap 23. The space and function can be designed, and ear caps can be designed to meet different consumer needs and different comfort requirements23.

4. The sealing of the ear cap 23 in the external auditory canal will be stronger than that of ordinary ear caps. Compared with the situation where the cap cover of ordinary ear caps has no support, this embodiment is provided with the connecting part 2322 supported between the two ends of the cover body 2321, which can be more By effectively supporting the cover body 2321 to the appropriate position of the external auditory canal, the sealing performance of the cover body 2321 will be improved, thereby improving the passive noise reduction effect.

In summary, by providing the connecting portion 2322 and forming the buffer space 2325, the position and orientation of the sound guide hole 2323 can be appropriately Accordingly, when the ear canal is curved or the ear canal has a special structure, the sound guide hole 2323 can better cooperate with the change of position and orientation of the ear canal, and the ear cap 23 can fit closer to the ear. Road, improve wearing stability and sealing, thereby improving wearing comfort.

In summary, the above embodiments can enhance the adaptability function of the ear cap 23 and can adapt to a wider range of different ear canal structures of different users. Moreover, due to the increased deformable dimensions, its deformation can be better resisted after being worn. It stays in the user's ear canal, increases wearing stability and sealing, improves noise reduction effect, and also improves wearing comfort.

Referring to Figures 2, 9 and 10, the speaker assembly 30 is partially accommodated in the accommodation cavity 211. The speaker assembly 30 can be electrically connected to a Bluetooth assembly or other signal source through a conductive assembly to receive electrical signals and convert them into sound signal. The speaker assembly 30 at least includes a tweeter 31 and a sound duct 311 .

One end of the sound duct 311 is connected to the tweeter 31 , and the other end of the sound duct 311 extends toward the sound nozzle 22 into the sound guide channel 221 . The sound duct 311 is used to transmit the sound emitted by the tweeter 31 to the outside of the mouthpiece 22 through the sound duct 311 . For example, the sound conduit 311 can extend a short distance in the sound guide channel 221. The outlet of the sound conduit 311 (located at the end far away from the tweeter 31) is connected with the sound guide channel 221. The sound generated by the tweeter 31 can pass through the sound conduit. 311 propagates to the sound guide channel 221, and then transmits the sound signal to the outside through the sound guide channel 221. The arrangement of the sound duct 311 enables the high-pitched sound emitted by the tweeter 31 to be transmitted to the outside world with high quality and smoothly through the sound duct 311 , which can reduce the impact of other components in the earphone 20 on the treble propagation during the propagation process, and improve the acoustics of the earphone 20 performance.

Optionally, referring to FIG. 10 , an end of the mouthpiece 22 away from the housing 21 is provided with a sound guide port, and sound can be transmitted to the outside through the sound guide port. The outlet of the sound guide channel 221 is the sound guide port, and a filter 222 is provided in the sound guide port. The filter 222 has a sound output area 222a, and the sound output area 222a is arranged corresponding to the sound output conduit 311. In this way, the sound in the sound duct 311 can be smoothly transmitted to the outside through the sound output area 222a. For example, the sound duct 311 can also extend a long distance in the sound guide channel 221 . In other words, the end of the sound duct 311 away from the tweeter 31 is disposed closer to the filter 222 . The outlet of the sound conduit 311 is close to the filter 222, so that the treble can be directly transmitted to the outside world with high quality, thereby reducing the transmission loss of the treble in the sound guide channel 221.

In one embodiment, the speaker assembly 30 further includes a woofer 32 connected to the tweeter 31 . The woofer 32 is located in the accommodation cavity 211 and is located away from the sound duct 311 . The arrangement of the woofer 32 enables the earphone 20 to output both bass and treble, thereby improving the acoustic performance of the earphone 20 . The woofer is provided with at least one sound outlet 321 , and the sound emitted by the woofer 32 is transmitted to the bass channel between the sound nozzle 22 and the sound duct 311 through the sound outlet 321 . The sound in the bass channel can be transmitted to the outside through the sound guide channel 221. Among them, providing the sound outlet 321 on the basis of the sound outlet 311 can enhance the sound output capability of the speaker assembly 30 (for example, the sound outlet 311 outputs high notes and the sound outlet 321 outputs bass), thereby further enhancing the sound output capability of the earphone 20 . The acoustic performance makes the sound emission range of the speaker assembly 30 larger and the sound more balanced.

In the related art, the sound emitted by the woofer is bass, and the frequency band width of the bass is generally less than 10KHz; the sound emitted by the tweeter is treble, and the frequency band width of the treble is generally greater than or equal to 10KHz and less than or equal to 14KHz. In this application, the frequency band width of the treble emitted by the tweeter 31 provided with the sound duct 311 can reach greater than or equal to 10KHz and less than or equal to 18KHz, which greatly expands the frequency band width of the treble emitted by the tweeter 31 and improves the efficiency of the earphone 20 treble sound effect.

The following is a further exemplary introduction to the implementation of the speaker assembly 30:

Referring to FIG. 9 , the tweeter 31 and the woofer 32 are stacked or nested. For example, a part of the tweeter 31 is embedded in the middle recess of the woofer 32 . The speaker assembly 30 further includes a speaker circuit board 33. The speaker circuit board 33 is disposed between the tweeter 31 and the woofer 32 and is electrically connected to the tweeter 31 and the woofer 32 to provide electrical signals to them.

Optionally, the tweeter 31 may be one of a moving coil type loudspeaker, a moving iron type loudspeaker or a coil iron type loudspeaker. The woofer 32 may specifically be one of a moving coil type speaker, a moving iron type speaker or a coil iron type speaker. There are no specific limitations here.

Specifically, the tweeter 31 is closer to the mouthpiece 22 than the woofer 32 . The tweeter 31 is at least partially disposed in the accommodation cavity 211 , and has a sound outlet duct 311 on a side facing the mouthpiece 22 . The sound generated by the tweeter 31 can be transmitted to the sound guide channel 221 or the outside world along the sound conduit 311. The sound conduit 311 is spaced apart from the noise reduction microphone assembly 40 to reduce the impact of the sound on the sound guide channel. Interference from other components in 221.

The woofer 32 has a sound hole 321 on the side facing the mouthpiece 22. The sound hole 321 is spaced apart from the tweeter 31, and is connected to the bass channel of the sound guide channel 221 between the tweeter 31 and the mouthpiece 22, so that the woofer 321 is connected to the bass channel. The bass sound emitted by 32 can be spread to the outside world through the sound guide channel 221.

Optionally, the sound hole 321 may be at least two openings provided on the woofer 32 , or may also be an annular opening provided on the woofer 32 and surrounding the outside of the tweeter 31 to strengthen the woofer 32 . 32 sound effects. At least two sound holes 321 are spaced apart from the portion of the side of the woofer 32 facing the mouthpiece 22 that is not in contact with the tweeter 31 to prevent the tweeter 31 from affecting the sound output of the sound holes 321 . Among them, the two sound holes 321 can be respectively located on opposite sides of the tweeter 31 to increase the uniformity of the sound generated by the woofer 32 and thereby improve the acoustic performance of the earphone 20 .

Further, the tweeter 31 and the woofer 32 are partially nested, and the maximum outer diameter of the woofer 32 is larger than the maximum outer diameter of the tweeter 31 . The sound hole 321 is provided in a portion where the outer diameter of the woofer 32 is larger than the maximum outer diameter of the tweeter 31 . In other words, the tweeter 31 is disposed on the side of the woofer 32 facing the mouth 22 , and the projection of the tweeter 31 on the side of the woofer 32 facing the mouth 22 is located within the side of the woofer 32 facing the mouth 22 . , the sound hole 321 is provided on the part of the side where the tweeter 31 does not project. Such an arrangement can facilitate the sound output from the sound outlet 321, and can also make the structure of the speaker assembly 30 more regular, which is beneficial to its accommodation in the accommodation cavity 211, and can also facilitate the shape adaptation of the housing 21 and the ear canal. Increase wearing comfort.

Further exemplary explanation regarding tweeter 31 and woofer 32:

The arrangement of the tweeter 31 and the woofer 32 enables the sound emitted by the earphone 20 to have better treble effect and bass effect at the same time. Optionally, the sound film 34 of the tweeter 31 protrudes toward the mouthpiece 22 , the sound film 34 of the woofer 32 protrudes toward the direction away from the mouthpiece 22 , and the sound films 34 of the tweeter 31 and the woofer 32 protrude. in the opposite direction. This can better enhance the treble characteristics of the tweeter 31 and the bass characteristics of the woofer 32. Through the cooperation of the two speakers, the sound quality of the entire earphone 20 can be improved, taking into account both high-frequency sound quality and low-frequency sound quality.

Optionally, considering that speakers with good treble performance are generally smaller and speakers with better bass performance are generally larger, the tweeter 31 is set closer to the side of the mouthpiece 22 so that the speaker assembly 30 is The shape can better fit the shell 21, further enabling the shell 21 to fit the user's ear canal, thereby improving wearing comfort. Moreover, comparing treble and bass, bass has higher anti-interference performance. The treble sound can be emitted through the sound duct 311 , and the bass sound can be emitted through the sound outlet 321 . This can improve the overall acoustic performance of the earphone 20 . Other structures and components of the tweeter 31 and the woofer 32 may be existing conventional structures and will not be described again here.

Referring to FIG. 2 , FIG. 9 and FIG. 10 , the earphone 20 further includes a noise reduction microphone assembly 40 accommodated in the sound guide channel 221 . Placing the noise reduction microphone assembly 40 in the sound guide channel 221 allows the noise it receives to be noise that is attenuated by the shell 21 or other components of the earphone 20 . The attenuated noise is similar to what the human ear can hear when wearing the earphone 20 . The audible noise is closer, thus optimizing the active noise reduction function. The noise reduction microphone assembly 40 is spaced apart from the sound duct 311, so that the sound emitted by the speaker assembly 30 can be directed to the outside through the sound duct 311, reducing the sound being blocked by the noise reduction microphone assembly 40 on the propagation path, thereby reducing The sound is weakened or distorted, thereby enhancing the acoustic performance of the earphone 20 . Optionally, as shown in FIG. 10 , the filter 222 has a sound collection area 222 b spaced apart from the sound output area 222 a. The sound collection area 222 b is provided corresponding to the noise reduction microphone assembly 40 . Looking from the outside of the mouthpiece 22 to the inside, the filter 222 It can present a unique appearance design, and this appearance design can better cooperate with the sound duct 311 and the noise reduction microphone assembly 40, optimize the structural design, and make the structure more coordinated.

Further, the noise reduction microphone assembly 40 includes a noise reduction microphone 41 and a flexible circuit board 42 . The flexible circuit board 42 is arranged around the periphery of the sound duct 311 . The flexible circuit board 42 can be freely bent, rolled, and folded, and can be arranged arbitrarily according to the spatial layout requirements, for example, in a curved arrangement. The flexible circuit board 42 can be an FPC circuit board. Moreover, the flexible circuit board 42 has greater freedom of movement and expansion in three-dimensional space, thereby achieving the integration of assembly of various components and wire connections in the noise reduction microphone assembly 40 . The noise reduction microphone 41 may be a feedback microphone for active noise reduction.

The noise reduction microphone 41 is disposed on the flexible circuit board 42 and is electrically connected to the flexible circuit board 42 . The noise reduction microphone 41 includes a sound pickup hole 411, The sound pickup hole 411 of the noise reduction microphone 41 is located in the gap between the sound outlet 311 and the sound nozzle 22 , and the sound pickup hole 411 of the noise reduction microphone 41 faces the sound outlet 311 . Such an arrangement enables the sound pickup hole 411 to receive more noise entering the sound guide channel 221 from the sound guide port of the sound guide channel 221 , thereby improving the noise reduction capability of the earphone 20 .

The noise reduction microphone assembly 40 can be arranged in the sound guide channel 221 in various ways. For example, the noise reduction microphone assembly 40 is disposed on the inner wall of the mouthpiece 22 or on the outer wall of the sound conduit 311 . The noise reduction microphone assembly 40 can be installed on the inner wall of the sound mouth 22. Specifically, the flexible circuit board 42 can be partially installed on the inner wall of the sound mouth 22 and partially extended into the sound guide channel 221. The noise reduction microphone 41 is installed on the inner wall extending into the sound guide. on the flexible circuit board 42 in the sound channel 221. Such an arrangement can improve the sound collection capability of the noise reduction microphone 41, and can also facilitate the assembly and manufacturing of the sound conduit 311. The noise reduction microphone 41 can be installed on the outer wall of the sound duct 311. Specifically, the flexible circuit board 42 can be partially disposed on the outer wall of the sound duct 311 and partially extended into the sound guide channel 221. The noise reduction microphone 41 is installed on the outer wall of the sound duct 311. on the flexible circuit board 42 in the sound guide channel 221. This can facilitate the installation of the flexible circuit board 42 and can also improve the sound collection capability of the noise reduction microphone 41 .

Optionally, the noise reduction microphone assembly 40 may include a reinforcing plate 43 that is stacked and conformally arranged with the flexible circuit board 42 . After the flexible circuit board 42 is bent to a suitable shape, its shape can be further fixed by the reinforcing plate 43 , thereby reducing the impact of the flexible circuit board 42 due to the gravity of each component installed on the flexible circuit board 42 and the shaking of the earphone 20 . deformation, thereby reducing fatigue fracture and component damage caused by excessive deformation of the flexible circuit board 42 .

Further, referring to Figure 10, the part of the flexible circuit board 42 in the sound guide channel 221 is arranged in a U shape and is partially fixed on the inner wall of the mouthpiece 22. The noise reduction microphone 41 is arranged inside the flexible circuit board 42 and close to it. Sound conduit 311. Specifically, the flexible circuit board 42 may include a board body portion 421 and an extension portion 422 that are connected to each other. The plate body portion 421 is arranged in a curved shape and is provided on the periphery of the sound conduit 311 . Optionally, the extension portion 422 extends from the side of the plate body 421 away from the speaker assembly 30 to the side close to the speaker assembly 30 to close to the tweeter 31 and is located between the plate body 421 and the sound duct 311 . The plate body part 421 and the extension part 422 together define the above-mentioned U shape. The noise reduction microphone 41 is disposed on a side of the extension portion 422 away from the sound conduit 311 . The extension part 422 is provided with a through hole corresponding to the sound pickup hole 411 (shown in FIG. 10 , but not labeled). Such an arrangement can facilitate the installation and installation of the noise reduction microphone 41 and improve the sound collection effect of the noise reduction microphone 41. Moreover, the provision of the plate body portion 421 and the bent and extended extension portion 422 can increase the available area of the flexible circuit board 42, thereby enabling the installation More electrical devices, and the bending and extension of the extension portion 422 can improve the space utilization of the sound guide channel 221 and improve the structural intensification and compactness.

Referring to FIGS. 11 to 13 , in other embodiments, one or more of the blood oxygen detection component 60 , the heart rate detection component 50 , and an infrared sensor (not shown) is also provided in the sound guide channel 221 . One or more of the blood oxygen detection component 60 , the heart rate detection component 50 , and the infrared sensor are also disposed on the flexible circuit board 42 , thereby making the overall structure of the earphone 20 more compact and reducing the overall volume of the earphone 20 . Optionally, one or more of the blood oxygen detection component 60, the heart rate detection component 50, and the infrared sensor can be provided on another circuit board, which is not specifically limited here.

Optionally, the heart rate detection component 50, the blood oxygen detection component 60 and the infrared sensor can also be disposed around the mouthpiece. The plate body portion 421 is generally arranged in an annular shape, such as a circular or square shape. The plate body part 421 is sleeved on the peripheral side of the mouthpiece 22 . Such an arrangement can reduce the impact of the heart rate detection component 50 on the sound produced by the mouthpiece 22 . Optionally, the earphone 20 includes a transparent support shell, which is sleeved on the periphery of the mouthpiece 22 , and the heart rate detection component 50 or the blood oxygen detection component 60 is disposed between the transparent support shell and the mouthpiece 22 . By providing a transparent support shell, the heart rate detection component 50 or the blood oxygen detection component 60 can be separated from the ear canal to improve detection stability.

Specifically, the heart rate detection component 50 or the blood oxygen detection component 60 may be disposed on the peripheral side of the plate body 421 , so that the earphone 20 of the present application can have the functions of heart rate detection and blood oxygen detection. The plate body 421 may also be provided with an infrared proximity sensor to detect whether the earphones are worn by the user, and to activate or deactivate the earphones as appropriate to save power.

Specifically, the heart rate detection component 50 may include at least a heart rate transmitter and a heart rate receiver. The heart rate transmitter and the heart rate receiver can be installed on the board body 421 of the flexible circuit board 42 , and specifically can be disposed on the outer side of the board body 421 . The heart rate transmitter emits light into the skin. After reflection, scattering and absorption by the subcutaneous tissue, part of the light can be reflected from the skin surface and received by the heart rate receiver. During this process, because the blood volume of the subcutaneous tissue changes pulsatingly with the heart rhythm, the light intensity received on the heart rate receiver also changes pulsatingly. By converting this light intensity change signal into an electrical signal, the waveform of the subcutaneous tissue blood volume changing with the pulse can be obtained, and the heart rate value can be calculated from this. The heart rate transmitter may comprise, for example, a light-emitting LED, and the heart rate receiver may, for example, comprise a photodiode.

Further, the plate body portion 421 is generally arranged in an annular shape surrounding the sound conduit 311 , such as a circular or square arrangement, and the sound mouth 22 is covered with the plate body portion 421 . Such an arrangement can reduce the problem of the increase in the volume of the earphone 20 caused by the heart rate detection component 50 to increase the comfort of wearing the earphone 20. Moreover, being arranged in the mouthpiece 22 can space the heart rate detection component 50 from the ear canal to improve the detection efficiency. stability.

Furthermore, the plate body part 421 is configured conformally to the sound guide channel 221 , thereby reducing the obstruction of the sound guide channel 221 by the heart rate detection component 50 and increasing the smoothness of sound transmission in the sound guide channel 221 . Specifically, referring to FIG. 12 , the heart rate detection component 50 may include a first heart rate transmitter 51 , a first heart rate receiver 52 , a second heart rate transmitter 53 and a second heart rate receiver 54 . The working surfaces of the first heart rate transmitter 51 , the first heart rate receiver 52 , the second heart rate transmitter 53 and the second heart rate receiver 54 respectively face the inner side of the mouthpiece 22 . In short, the working surfaces of the above-mentioned elements are respectively facing outwards, so that the emitted light can enter the subcutaneous tissue and receive the reflected light.

In this embodiment, the light transmittance of the sound nozzle 22 can be greater than or equal to 50%, so that the light from the first heart rate transmitter 51 and the second heart rate transmitter 53 can be transmitted from the sound guide channel 221 through the sound nozzle 22, and can The reflected light is allowed to penetrate from the mouthpiece 22 to the first heart rate receiver 52 and the second heart rate receiver 54 in the sound guide channel 221 .

Specifically, the first heart rate transmitter 51, the first heart rate receiver 52, the second heart rate transmitter 53 and the second heart rate receiver 54 are arranged at intervals on the outer side of the plate body 421, which can reduce the above four components. The mutual interference between them is conducive to improving detection accuracy.

Specifically, the working surfaces of the first heart rate transmitter 51 , the first heart rate receiver 52 , the second heart rate transmitter 53 and the second heart rate receiver 54 are oriented differently from each other. Such an arrangement can ensure that the light emitted by the first heart rate transmitter 51 and the second heart rate transmitter 53 can enter the subcutaneous tissue of the ear canal as much as possible, and reduce the light emitted by the two from directly entering the subcutaneous tissue without being absorbed by the subcutaneous tissue. The first heart rate receiver 52 and the second heart rate receiver 54 can increase the anti-interference performance of the heart rate detection component 50 and help improve detection accuracy. The working surfaces of the first heart rate transmitter 51 and the second heart rate transmitter 53 may respectively refer to their light-emitting surfaces. The working surfaces of the first heart rate receiver 52 and the second heart rate receiver 54 may respectively refer to their light receiving surfaces.

Referring to FIGS. 12 and 13 , further, the plate body portion 421 has at least four outer side surfaces arranged along the circumferential direction. By providing the four outer side surfaces, the circumferential side of the plate body portion 421 is divided into four different directions. The first heart rate transmitter 51 , the first heart rate receiver 52 , the second heart rate transmitter 53 and the second heart rate transmitter 53 are respectively disposed on the outer surfaces of the plate body 421 in different directions, so that the first heart rate transmitter 51 The working surfaces, the working surfaces of the first heart rate receiver 52 , the second heart rate transmitter 53 and the second heart rate receiver 54 are oriented differently from each other. For example, the first heart rate transmitter 51 and the first heart rate receiver 52 are respectively located on two adjacent outer sides of the plate body 421, and the second heart rate transmitter 53 and the second heart rate receiver 54 are respectively located adjacent to the plate body 421. the other two outer sides.

The plate body part 421 is arranged in a curved shape and has at least a first outer side 421a, a second outer side 421b, a third outer side 421c and a fourth outer side 421d. The first outer side 421a and the second outer side 421b are arranged oppositely. , the third outer side 421c and the fourth outer side 421d are arranged oppositely, the first outer side 421a and the second outer side 421b are respectively located between the third outer side 421c and the fourth outer side 421d, the first heart rate transmitter 51 and The first heart rate receiver 52 is respectively disposed on two adjacent ones of the first to fourth outer surfaces 421a to 421d. The second heart rate transmitter 53 and the second heart rate receiver 54 are respectively disposed on the first to fourth outer surfaces 421a to 421d. The other two adjacent outer surfaces 421d are adjacent to each other. Optionally, the reinforcing plate 43 is provided on the inner side of the plate body 421 away from the first to fourth outer sides 421a to 421d.

In other implementations, the plate body part 421 may be arranged in a rectangular frame, for example, in the shape of a track. The first outer side 421a, the second outer side 421b, the third outer side 421c and the fourth outer side 421d are the plate body part. The four outer sides of 421. The plate body 421 is configured as a rectangular frame. On the one hand, the four corners of the plate body 421 can receive the first heart rate transmitter 51 , the first heart rate receiver 52 , the second heart rate transmitter 53 and the second heart rate. The detectors 54 are spaced two by two, so that the plate body part 421 can block the light path between the first heart rate transmitter 51 and the first heart rate receiver 52, reducing the direct radiation of the first heart rate transmitter 51 to the first heart rate receiver 52. light to improve detection accuracy. The same applies to the second heart rate transmitter 53 and the second heart rate receiver 54 . On the other hand, the plate body part 421 and the mouthpiece 22 provided in the rectangular frame can form form a stable assembly.

The earphone 20 also includes a first blood oxygen emitter 61 and a second blood oxygen emitter 62. The first blood oxygen emitter 61 and the second blood oxygen emitter 62 are disposed on the same outer side of the plate body 421, or are respectively disposed on The different outer surfaces of the plate body part 421 are not specifically limited.

Since blood absorbs green light strongly and absorbs red light weakly, the light emitted by the first blood oxygen emitter 61 and the second blood oxygen emitter 62 is set to red and green light, and passes through the subcutaneous tissue and Blood absorbs and reflects red and green light, so that the reflected light is received by the first heart rate receiver 52 and the second heart rate receiver 54. After the light intensity signal is converted into an electrical signal, the blood oxygen content can be calculated according to the algorithm. The first blood oxygen emitter 61 can emit red light and green light at the same time (for example, it can have a red LED and a green LED at the same time), and the second blood oxygen emitter 62 can emit red light and green light at the same time (for example, it can have a red light and a green LED at the same time). light LED and green LED).

Specifically, the first blood oxygen transmitter 61 and one of the first heart rate transmitter 51 and the second heart rate transmitter 53 are disposed on the same side of the plate body 421 , and the second blood oxygen transmitter 62 is disposed on the same side as the first heart rate transmitter 51 and the second heart rate transmitter 53 . One of the transmitter 51 and the second heart rate transmitter 53 is disposed on the same side of the plate body portion 421 . Optionally, the working surfaces of the first blood oxygen transmitter 61 and the second blood oxygen transmitter 62 are oriented in the same direction as the first heart rate transmitter 51 or the second heart rate transmitter 53 located on the same side. Among them, the first heart rate receiver 52 and the second heart rate receiver 54 can simultaneously receive the emitted signals from the first heart rate transmitter 51 , the second heart rate transmitter 53 , the first blood oxygen transmitter 61 and the second blood oxygen transmitter 62 The light is reflected by the subcutaneous tissue. The first heart rate receiver 52 and the second heart rate receiver 54 can also respectively receive the light reflected by the subcutaneous tissue after being emitted by the first heart rate transmitter 51 and the second heart rate transmitter 53, as well as the first blood oxygen transmitter 61 and the second heart rate transmitter 54. The light reflected by the subcutaneous tissue after being emitted by the two blood oxygen emitters 62 can be determined by the specific algorithm of the chip in the specific calculation of heart rate and blood oxygen.

Further, since the first blood oxygen emitter 61 and the second blood oxygen emitter 62 also emit light, part of the light enters the first heart rate receiver 52 and the second heart rate receiver after reflection, scattering and absorption by the subcutaneous tissue. The principle of converting into electrical signals in 54. Then the technical effects produced by the arrangement position and working surface orientation of the first blood oxygen emitter 61 and the second blood oxygen emitter 62 in this embodiment are at least the same as the technical effects of the heart rate detection assembly 50 mentioned above. Repeat.

By arranging the first heart rate transmitter 51 , the second heart rate transmitter 53 , the first heart rate receiver 52 and the second heart rate receiver 54 on the plate body 421 , the earphone 20 of the present application can test two groups at the same time through the above components. Heart rate data, two sets of heart rate data calculated through algorithms can increase the accuracy of heart rate detection. By arranging the above elements at intervals, the earphone 20 of the present application can detect the heart rate through the subcutaneous tissue in different areas of the ear canal, and can better reflect the average level of the heart rate, thereby improving the detection accuracy. Further, by arranging the orientations of the working surfaces of the above-mentioned elements to be different from each other, and by structurally designing the plate body 421 , it can be reduced that the light emitted by the first heart rate transmitter 51 and the second heart rate transmitter 53 is directly absorbed by the subcutaneous tissue. The conditions of the first heart rate receiver 52 and the second heart rate receiver 54 are entered, thereby improving the detection accuracy. By adding the first blood oxygen emitter 61 and the second blood oxygen emitter 62, the earphone 20 further has a blood oxygen detection function.

To sum up, by arranging the speaker assembly 30 in the accommodation cavity 211 of the housing 21, the earphone 20 can produce sound, and by arranging the sound duct 311 and the noise reduction microphone at intervals in the sound guide channel 221 of the mouthpiece 22. Component 40 enables the treble emitted by the speaker component 30 to be transmitted to the outside world with high quality and smoothly through the sound duct 311, and the bass emitted by the speaker component 30 can be transmitted to the outside world with high quality and smoothly through the bass channel isolated from the treble, while reducing the number of speaker components. The sound output of 30 is affected by the noise reduction microphone assembly 40, further improving the acoustic performance of the earphone 20. Disposing the noise reduction microphone assembly 40 in the sound guide channel 221 can also facilitate the reduction of the size of the housing 21 and help improve the wearing comfort of the earphone 20 .

The above are only examples of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, All are similarly included in the patent protection scope of this application.

Claims (20)

1. A headset, including:

   The shell has a receiving cavity formed inside,

   A sound mouth, connected to the housing, having a sound guide channel connected to the accommodation cavity;

   A speaker assembly is partially housed in the accommodation cavity, wherein the speaker assembly at least includes a tweeter and a sound duct, one end of the sound duct is connected to the tweeter, and the other end of the sound duct is connected to the tweeter. One end extends toward the sound mouth into the sound guide channel; the sound output conduit is used to transmit the sound emitted by the tweeter to the outside of the sound mouth through the sound output conduit.
2. The earphone according to claim 1, wherein,

   The speaker assembly also includes a woofer connected to the tweeter. The woofer is located in the accommodation cavity and is disposed away from the sound duct; the woofer is provided with at least one sound hole, and the The sound emitted by the woofer is transmitted to the bass channel between the sound nozzle and the sound duct through the sound outlet.
3. The earphone according to claim 1, wherein,

   The headset also includes a noise reduction microphone component housed in the sound guide channel. The noise reduction microphone component includes a flexible circuit board and a noise reduction microphone. The noise reduction microphone is disposed on the flexible circuit board and is electrically Connect the flexible circuit board; the noise reduction microphone includes a sound pickup hole, and the sound pickup hole is located between the sound outlet conduit and the sound mouth.
4. The earphone according to claim 3, wherein,

   The noise reduction microphone assembly is arranged on the inner wall of the sound mouth, or on the outer wall of the sound outlet conduit.
5. The earphone according to claim 4, wherein,

   The flexible circuit board is arranged in a U shape and is partially fixed on the inner wall of the sound mouth; the noise reduction microphone is provided on the inside of the flexible circuit board and close to the sound conduit, on the flexible circuit board A through hole corresponding to the sound pickup hole is provided.
6. The earphone according to claim 2, wherein,

   The tweeter and the woofer are partially nested, and the maximum outer diameter of the woofer is greater than the maximum outer diameter of the tweeter, and the sound outlet is provided where the outer diameter of the woofer is greater than the maximum outer diameter of the woofer. The maximum outer diameter of the tweeter.
7. The earphone according to claim 1, wherein,

   An end of the sound nozzle away from the housing is provided with a sound guide port, the sound guide port is provided with a filter screen, and the end of the sound outlet pipe away from the tweeter is provided close to the filter screen.
8. The earphone according to claim 3, wherein,

   The earphone further includes a heart rate detection component, which is disposed on the mouthpiece and capable of emitting or receiving light required for detection through the mouthpiece. The heart rate detection component includes a first heart rate transmitter, a first heart rate receiver, and a third heart rate receiver. two heart rate transmitters and a second heart rate receiver;

   Wherein, the first heart rate transmitter, the first heart rate receiver, the second heart rate transmitter and the second heart rate receiver are arranged at intervals on the outer side of the flexible circuit board, and the first The working surfaces of the heart rate transmitter, the first heart rate receiver, the second heart rate transmitter and the second heart rate receiver are oriented differently from each other.
9. The earphone according to claim 8, wherein,

   The flexible circuit board has at least four outer sides arranged along the circumferential direction, and the first heart rate transmitter, the first heart rate receiver, the second heart rate transmitter and the second heart rate transmitter are respectively arranged on The outer sides of the flexible circuit board are oriented in different directions, so that the working surface of the first heart rate transmitter, the working surface of the first heart rate receiver, the working surface of the second heart rate transmitter and the second The working surfaces of the heart rate receivers face each other differently.
10. The earphone according to claim 9, wherein,

    The first heart rate transmitter and the first heart rate receiver are respectively located on two adjacent outer sides of the flexible circuit board, and/or, the The second heart rate transmitter and the second heart rate receiver are respectively located on two adjacent outer sides of the flexible circuit board.
11. The earphone according to claim 8, wherein,

    The earphone includes a first blood oxygen transmitter and a second blood oxygen transmitter used in conjunction with the first blood oxygen transmitter. The first blood oxygen transmitter and the second blood oxygen transmitter are arranged on the The same outer side of the flexible circuit board, or respectively provided on different outer sides of the flexible circuit board.
12. The earphone according to claim 11, wherein,

    The first blood oxygen transmitter and one of the first heart rate transmitter and the second heart rate transmitter are disposed on the same side of the flexible circuit board, and/or the second blood oxygen transmitter The transmitter is disposed on the same side of the flexible circuit board as one of the first heart rate transmitter and the second heart rate transmitter.
13. The earphone according to claim 2, wherein,

    The tweeter is one of a moving coil loudspeaker, a moving iron loudspeaker, and a hoop iron loudspeaker, and the woofer is one of a moving coil loudspeaker, a moving iron loudspeaker, and a hoop iron loudspeaker.
14. The earphone according to claim 1, wherein,

    The earphone further includes an ear cap, which is detachably connected to the sound mouthpiece; the ear cap includes:

    The cap post is provided with sound guide channels running through both ends of the cap post, as well as channel exits and channel entrances respectively located at both ends of the cap post;

    The cap sleeve includes a sleeve body and a connecting part. The sleeve body is sleeved on the outer circumference of the cap post. The connecting part is connected between the cap post and the sleeve body, and the first part of the connecting part is The end is connected to the cap post, and the second end of the connecting part is connected between the two ends of the sleeve body; the first end of the sleeve body is provided with sound outlets that are opposite to the channel outlet and spaced apart from each other. Hole; The wall of the sleeve body located between the sound hole and the second end of the connecting part is enclosed with the connecting part to form a buffer space that connects the channel outlet and the sound hole. , so that the cap cover can move and/or deform relative to the cap post.
15. The earphone according to claim 14, wherein,

    The vertical distance between the second end of the connecting part and the outer wall of the cap post ranges from 0.6mm to 2.5mm;

    Alternatively, on a cross section passing through the central axis of the cap post, the angle between the line between the first end and the second end of the connecting portion and the central axis of the cap post is greater than 90°, so The second end of the sleeve body away from the sound outlet is provided with an opening that is opposite to the channel entrance and spaced apart from each other. The ear cap further includes a support rib, and the support rib is disposed on the sleeve body. The side of the wall between the connecting part and the opening facing the cap post;

    Alternatively, the angle between the connecting line and the central axis of the cap post is greater than 90°, and the soft rubber hardness of the connecting part is less than or equal to 40A.
16. The earphone according to claim 14, wherein,

    The cap post is provided with one end of the channel outlet and at least part of the connecting portion, and the orthographic projection on the plane where the sound hole is located is located in the sound hole to expose the sound through the sound hole. The cap post is provided with one end of the channel outlet and at least part of the connecting portion.
17. The earphone according to claim 14, wherein,

    The first end of the connecting part is connected to the end of the cap post provided with the channel outlet; and/or the second end of the connecting part is located in the middle section of the sleeve body.
18. The earphone according to claim 14, wherein,

    The connecting part is a trumpet-shaped integrated structure arranged around the cap post to divide the cap sleeve and the cap post into two independent cavities, one of which is the buffer space and the other is the buffer space. The latter is the support space away from the buffer space.
19. The earphone according to claim 14, wherein,

    The second end of the sleeve body away from the sound outlet is provided with an opening opposite to the channel inlet and spaced apart from each other. The cap post can be sleeved on the sound mouth of the earphone through the opening.
20. An earphone system, which includes a charging box and at least one earphone according to any one of claims 1 to 19, the charging box is used to accommodate the earphone, and after the earphone is placed in the charging box, The headphones are charged.