CN115396767A - Earphone and earphone system - Google Patents

Abstract

The application discloses an earphone and an earphone system. Wherein, the earphone includes casing, sound mouth and speaker subassembly. The housing has a receiving cavity. The sound mouth is connected with the shell and is provided with a sound guide channel communicated with the accommodating cavity. The speaker assembly is partially housed in the receiving cavity. Wherein the speaker assembly includes at least a tweeter and an outlet conduit. One end of the sound outlet conduit is connected with the high pitch loudspeaker, and the other end of the sound outlet conduit extends into the sound guide channel towards the sound mouth. The sound outlet conduit is used for transmitting the sound emitted by the high pitch loudspeaker to the outside of the sound mouth through the sound outlet conduit. Through the mode, the earphone of the application has better acoustic performance.

Description

Earphone and earphone system

Technical Field

The application relates to the technical field of earphones, in particular to an earphone and an earphone system.

Background

With the continuous development of the earphone technology, users have higher and higher requirements on the sound quality and the noise reduction function of the earphones. In the related art, the noise reduction function of the earphone is realized by adopting an active noise reduction mode. Due to the fact that a microphone needs to be arranged to collect environmental noise in the active noise reduction function, the technical problem that the existing earphone is poor in acoustic performance can be caused.

Disclosure of Invention

The application aims to provide an earphone and an earphone system, which can improve the acoustic performance of the earphone.

In order to solve the technical problem, the application adopts a technical scheme that:

an earphone is provided. The earphone includes a housing, a mouthpiece, and a speaker assembly. The housing has a receiving cavity. The sound mouth is connected with the shell and is provided with a sound guide channel communicated with the accommodating cavity. The speaker assembly is partially housed in the receiving cavity. Wherein the speaker assembly includes at least a tweeter and an outlet conduit. One end of the sound outlet conduit is connected with the high pitch loudspeaker, and the other end of the sound outlet conduit extends into the sound guide channel towards the sound mouth. The sound outlet pipe is used for transmitting the sound emitted by the high pitch loudspeaker to the outside of the sound mouth through the sound outlet pipe.

In another aspect, a headset system is also provided. The earphone system comprises a charging box and the at least one earphone, wherein the charging box is used for accommodating the earphone and charging the earphone after the earphone is placed into the charging box.

The beneficial effect of this application is: be different from prior art's condition, through set up the speaker subassembly in the intracavity that holds of casing to make the earphone can sound, and extend to in leading the sound passageway through the play sound pipe that will be used for transmitting the sound that high pitch speaker sent, make the high pitch that sends by the speaker subassembly can high quality and smooth and easy outwards propagate through a sound pipe, thereby reduce the sound that the speaker subassembly sent and receive the interference of the inside other parts of earphone, and then improve the acoustic performance of earphone.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a headphone system according to the present application;

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

fig. 3 is a partial structural schematic view of the headset shown in fig. 2;

FIG. 4 is an enlarged schematic view of a portion of the structure shown in FIG. 3;

FIG. 5 is a schematic diagram of another embodiment of the headset shown in FIG. 2;

FIG. 6 is a schematic diagram of the structure of one embodiment of the earphone shown in FIG. 5;

fig. 7 is a schematic structural diagram of an embodiment of the earphone of fig. 5.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the related art, the earphone may have an active noise reduction function. The active noise reduction function is to collect external environment noise through a microphone, and then to send sound waves with opposite phases to the noise through a system to interfere with the noise to realize phase cancellation. The active noise reduction function of the headset uses a microphone assembly to pick up ambient noise. If the microphone assembly is installed in the housing of the earphone, the size of the housing is increased, which affects the wearing comfort. If the microphone assembly is disposed in the sound output channel of the earphone, the output of sound will be blocked, which affects the acoustic performance. In order to solve the above technical problems, the present application provides at least the following embodiments.

As shown in fig. 1, the headset 20 of the present application may form a headset system 1 with at least one headset 20 and other elements, and the headset system 1 described in an embodiment may include at least two headsets 20. The headphone system 1 is, for example, a TWS (true wireless) headphone system 1 shown in fig. 1, or a neck-hung wireless headphone system, or a wired headphone system, or the like.

In the following, the headset system 1 is described as a TWS headset system 1 as an example.

As shown in fig. 1, the TWS headset system 1 may include a charging box 10 and two earphones 20, the charging box 10 receiving the earphones 20 and charging the earphones 20 after the earphones 20 are placed in the charging box 10. Alternatively, the charging case 10 may include a case body 11 and a case cover 12 connected to each other, the case body 11 is formed with two receiving grooves 110, and the number of the receiving grooves 110 and the number of the earphones 20 may be the same. The receiving groove 110 is to receive the earphone 20. The cover 12 is rotatably/slidably coupled to the 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, so as to realize a flip-type design. For example, the box cover 12 can slide relative to the box body 11 through the cooperation of a slide rail and a slide block, thereby realizing a slide design.

The charging box 10 can charge the earphone 20, and when the earphone 20 is accommodated in the accommodating groove 110, the charging box can be electrically connected to the earphone 20, so as to charge the earphone 20. For example, a charging contact (not shown) may be disposed in the receiving groove 110, and a charging contact (not shown) may be correspondingly disposed on the earphone 20. When the earphone 20 is placed in the receiving groove 110, the charging contact of the earphone 20 and the charging contact of the charging box 10 can be contacted to achieve electrical connection. Of course, the charging box 10 may be wirelessly charged with the earphone 20. The charging box 10 can be connected with the earphone 20 by magnetic attraction and/or electrically, and when the earphone 20 is placed in the accommodating groove 110, the charging box 10 and the earphone 20 are attracted by magnetic attraction.

The charging box 10 may be provided with a prompt component 111, such as a display screen or an LED lamp, etc., which may be used to prompt corresponding information, such as the amount of electricity, etc. The charging box 10 may be further provided with a charging interface (not shown), such as a USB interface, TYPE-C interface, MIN-USB interface, lighting interface.

The two earphones 20 may be divided into a main earphone 20 and a sub earphone 20. The master headset 20 may be communicatively coupled to an external device, such as via bluetooth technology. The external device may be, for example, a mobile phone, a tablet, a smart watch, a notebook computer, or the like. The sub-headset 20 can communicate with the main headset 20, and data transmitted from the external device can be transmitted to the main headset 20 and simultaneously transmitted to the sub-headset 20 through the main headset 20, so that the main and sub-headsets 20 can receive data synchronously as much as possible.

The following detailed description of an embodiment of the headset 20 can be referred to for related content of the headset 20 of the present embodiment.

An embodiment of the headset 20 of the present application describes at least one exemplary configuration of the headset 20.

Referring to fig. 2, the earphone 20 includes a housing 21, a mouthpiece 22, and a speaker assembly 30. The housing 21 has a receiving cavity 211, and the receiving cavity 211 can receive the speaker assembly 30, a bluetooth assembly for implementing bluetooth communication, and a conductive element, such as a circuit board or a wire, for electrically connecting other elements or devices. The mouthpiece 22 is connected to the housing 21 and has a sound guide channel 221 communicating with the accommodating cavity 211, and the mouthpiece 22 may also be referred to as an ear tip for transmitting sound emitted from the speaker assembly 30 in the earphone 20 to the outside through the sound guide channel 221.

Optionally, the earphone 20 includes a transparent ear cap 23, and the transparent ear cap 23 is detachably sleeved on the periphery of the sound mouth 22. The ear cap 23 is laterally compressed by the ear canal and undergoes some deformation. When the user wears the earphone 20, the earcap 23 can extend into the ear canal of the user, and the earphone 20 can be firmly worn on the ear of the user due to the deformation characteristic. And the ear cap 23 can block the ear canal of the user, so that a better passive noise reduction effect can be achieved.

Referring to fig. 2 to 4, the speaker assembly 30 is partially accommodated in the accommodating cavity 211, and the speaker assembly 30 can be electrically connected to a bluetooth assembly or other signal source through a conductive assembly to receive an electrical signal and convert the electrical signal into an acoustic signal. Speaker assembly 30 includes at least tweeter 31 and an outlet conduit 311.

One end of the sound outlet pipe 311 is connected to the tweeter 31, and the other end of the sound outlet pipe 311 extends into the sound guide passage 221 toward the mouthpiece 22. Sound outlet conduit 311 is adapted to transmit sound emitted by tweeter 31 to the exterior of mouthpiece 22 via sound outlet conduit 311. The sound outlet pipe 311 may extend a short distance in the sound guide channel 221, for example, an outlet (located at an end far from the tweeter 31) of the sound outlet pipe 311 is communicated with the sound guide channel 221, and sound generated by the tweeter 31 can be transmitted to the sound guide channel 221 through the sound outlet pipe 311, so as to transmit the sound signal to the outside through the sound guide channel 221. The arrangement of the sound outlet pipe 311 enables the high-pitched sound emitted from the tweeter 31 to be smoothly propagated to the outside through the sound outlet pipe 311, thereby reducing the influence of other components in the earphone 20 on the propagation of the high-pitched sound during the propagation process and improving the acoustic performance of the earphone 20.

Alternatively, referring to fig. 4, an end of the mouthpiece 22 away from the housing 21 is provided with a sound guide port through which sound can be transmitted to the outside. The outlet of the sound guiding channel 221 is a sound guiding opening, a filter screen 222 is disposed in the sound guiding opening, the filter screen 222 has a sound outlet area 222a, and the sound outlet area 222a is disposed corresponding to the sound outlet duct 311. Thus, the sound in the sound guiding tube 311 can be smoothly transmitted to the outside through the sound emitting area 222 a. The sound outlet pipe 311 may also extend a long distance in the sound guide channel 221, in other words, the end of the sound outlet pipe 311 away from the tweeter 31 is disposed closer to the filter 222. The outlet of the sound outlet pipe 311 is close to the filter screen 222, so that high-quality high-pitched sound can be directly transmitted to the outside, and the transmission loss of the high-pitched sound in the sound guide channel 221 is reduced.

In one embodiment, speaker assembly 30 further includes a woofer 32 connected to tweeter 31, woofer 32 being located within receiving cavity 211 and disposed distal to outlet conduit 311. The placement of the woofer 32 enables the headphone 20 to provide both bass and treble output, thereby improving the acoustic performance of the headphone 20. The woofer is provided with at least one sound outlet hole 321, and the sound emitted from the woofer 32 is transmitted to the bass channel between the sound nozzle 22 and the sound outlet pipe 311 through the sound outlet hole 321. The sound in the bass channel can propagate to the outside through the guide channel 221. In which, the sound output capability of the speaker assembly 30 can be enhanced by further providing the sound outlet hole 321 on the basis of the sound outlet conduit 311 (for example, the sound outlet conduit 311 outputs high pitch, and the sound outlet hole 321 outputs low pitch), so that the acoustic performance of the earphone 20 can be further enhanced, the sound outlet range of the speaker assembly 30 is wider, and the sound is more balanced.

In the related art, the sound emitted by the woofer is bass, and the frequency bandwidth of the bass is generally less than 10KHz; the sound emitted by the tweeter is treble, and the frequency bandwidth of treble is generally greater than or equal to 10KHz and less than or equal to 14KHz. And the frequency bandwidth of the high pitch that is sent by the tweeter 31 that is equipped with out sound pipe 311 in this application can reach more than or equal to 10KHz and be less than or equal to 18KHz, has expanded the frequency bandwidth of the high pitch that the tweeter 31 sent greatly, has improved the high pitch audio of earphone 20.

Embodiments of the speaker assembly 30 are further illustrated below:

referring to fig. 3, tweeter 31 and woofer 32 are stacked or nested, e.g., a portion of tweeter 31 is nested within a central recess of woofer 32. Speaker assembly 30 also includes a speaker circuit board 33, speaker circuit board 33 being disposed between tweeter 31 and woofer 32 and electrically connecting tweeter 31 and woofer 32 to provide electrical signals thereto.

Alternatively, tweeter 31 may be embodied as one of a moving coil type speaker, a moving iron type speaker, or a coil iron type speaker. The woofer 32 may be embodied as one of a moving coil type speaker, a moving iron type speaker, or a coil iron type speaker. Are not particularly limited herein.

Specifically, tweeter 31 is closer to mouthpiece 22 than woofer 32. The tweeter 31 is at least partially disposed in the receiving cavity 211, and has an outlet guide 311 on a side thereof facing the mouthpiece 22. Sound generated by tweeter 31 may travel along sound outlet tube 311 to sound guide channel 221 or to the environment, and sound outlet tube 311 may be spaced from noise reduction microphone assembly 40 to reduce interference of sound with other components within sound guide channel 221.

The bass speaker 32 has a sound outlet hole 321 on a side facing the mouthpiece 22, the sound outlet hole 321 being spaced apart from the tweeter 31 and communicating with the bass channel 221 between the tweeter 31 and the mouthpiece 22, so that bass sounds emitted from the bass speaker 32 can be transmitted to the outside through the sound guide channel 221.

Alternatively, the sound outlet hole 321 may be at least two openings provided on the woofer 32, or may be an annular opening provided on the woofer 32 and surrounding the outside of the tweeter 31 to enhance the sound outlet effect of the woofer 32. At least two sound outlet holes 321 are provided at intervals in a portion of a side surface of the woofer 32 facing the mouthpiece 22, which is not in contact with the tweeter 31, so as to prevent the tweeter 31 from affecting the sound outlet holes 321. Wherein, the two sound outlet holes 321 may be respectively located at two opposite sides of the tweeter 31 to increase the uniformity of the sound generated by the woofer 32, thereby improving the acoustic performance of the earphone 20.

Further, the tweeter 31 is partially nested with the woofer 32, and the woofer 32 has a maximum outer diameter larger than a maximum outer diameter of the tweeter 31. Sound outlet hole 321 is provided in a portion of woofer 32 having an outer diameter larger than the maximum outer diameter of tweeter 31. In other words, tweeter 31 is provided on a side surface of woofer 32 facing toward mouthpiece 22, and a projection of tweeter 31 on the side surface of woofer 32 facing toward mouthpiece 22 is located in a side surface of woofer 32 facing toward mouthpiece 22, and sound outlet hole 321 is provided in a portion of the side surface not having the projection of tweeter 31. So set up, can be convenient for go out sound hole 321 and go out the sound, also can make speaker subassembly 30's structure comparatively regular, be favorable to holding its holding in holding chamber 211, also can be convenient for the shape adaptation of casing 21 and duct to increase the travelling comfort of wearing.

For further exemplary explanation of tweeter 31 and woofer 32:

the tweeter 31 and the woofer 32 are arranged to produce sound with both good treble and bass effects from the headphones 20. Alternatively, the membrane 34 of tweeter 31 projects in a direction toward the mouthpiece 22, the membrane 34 of woofer 32 projects in a direction away from the mouthpiece 22, and the membranes 34 of tweeter 31 and woofer 32 project in opposite directions. So can strengthen tweeter 31's high pitch characteristic better to and woofer 32's bass characteristic, through the cooperation of two speakers, and then promote whole earphone 20's tone quality, compromise high frequency tone quality and low frequency tone quality.

Alternatively, considering that a speaker with good treble performance is generally small in volume and a speaker with good bass performance is generally large in volume, the tweeter 31 is disposed closer to the side of the mouthpiece 22, so that the shape of the speaker assembly 30 can be better adapted to the housing 21, further enabling the housing 21 to be adapted to the ear canal of the user, and improving wearing comfort. Moreover, the anti-interference performance of bass is higher compared with high and low. The treble sound is output through the sound output pipe 311, and the bass sound is output through the sound output hole 321. This can improve the overall acoustic performance of the headset 20. Other structures and components of the tweeter 31 and the woofer 32 may be conventional structures, and are not described in detail herein.

Referring to fig. 2, 3 and 4, the earphone 20 further includes a noise reduction microphone assembly 40 housed in the sound guide channel 221. The noise reduction microphone assembly 40 is accommodated in the sound guide channel 221, so that the received noise is the noise attenuated by the shell 21 or other components of the earphone 20, and the attenuated noise is closer to the noise which can be heard by human ears when the earphone 20 is worn, thereby optimizing the active noise reduction function. The noise reduction microphone assembly 40 and the sound outlet pipe 311 are arranged at intervals, so that sound emitted by the loudspeaker assembly 30 can be guided to the outside through the sound outlet pipe 311, the shielding of the sound by the noise reduction microphone assembly 40 on a propagation path is reduced, sound attenuation or distortion is reduced, and the acoustic performance of the earphone 20 is enhanced. Optionally, as shown in fig. 4, the filter screen 222 has a sound receiving area 222b spaced from the sound emitting area 222a, the sound receiving area 222b is disposed corresponding to the noise reduction microphone assembly 40, the filter screen 222 can present a unique appearance design when viewed from the outside to the inside of the mouthpiece 22, and the appearance design can better cooperate with the sound emitting pipe 311 and the noise reduction microphone assembly 40, so as to optimize the structural design, and make the structure more harmonious.

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 outer periphery of the sound outlet pipe 311. The flexible circuit board 42 can be freely bent, rolled, folded, and arranged arbitrarily according to the space layout requirement, for example, in a bending configuration, and the flexible circuit board 42 can be an FPC circuit board. In addition, the flexible circuit board 42 has a large degree of freedom in movement and expansion in a three-dimensional space, so that the assembly of each component and the wire connection in the noise reduction microphone assembly 40 are integrated. 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 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 being located in a gap between the sound outlet pipe 311 and the mouthpiece 22, the sound pickup hole 411 of the noise reduction microphone 41 facing the sound outlet pipe 311. With this arrangement, the sound pickup hole 411 can receive more noise entering the sound guide channel 221 from the sound guide port of the sound guide channel 221, so as to improve the noise reduction capability of the earphone 20.

The placement of the noise reduction microphone assembly 40 within the sound guide channel 221 can be accomplished in a variety of 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 outlet duct 311. The noise reduction microphone assembly 40 may be mounted on an inner wall of the mouthpiece 22, and specifically may be a flexible circuit board 42 that is partially mounted on the inner wall of the mouthpiece 22 and partially extends into the sound guide channel 221, and the noise reduction microphone 41 is mounted on the flexible circuit board 42 that extends into the sound guide channel 221. This arrangement can improve the sound receiving capability of the noise reduction microphone 41, and also can facilitate the assembly and manufacture of the sound outlet duct 311. The noise reduction microphone 41 may be mounted on an outer wall of the sound outlet duct 311, and specifically, the flexible circuit board 42 may be partially disposed on the outer wall of the sound outlet duct 311 and partially extend into the sound guide channel 221, and the noise reduction microphone 41 is mounted on the flexible circuit board 42 extending into the sound guide channel 221. This facilitates the mounting of the flexible circuit board 42, and also improves the sound-receiving capability of the noise reduction microphone 41.

Optionally, the noise reduction microphone assembly 40 may include a stiffener 43, the stiffener 43 being stacked and disposed conformally with the flexible circuit board 42. After the flexible circuit board 42 is bent to a suitable shape, the shape of the flexible circuit board 42 can be further fixed by the reinforcing plate 43, so that the deformation of the flexible circuit board 42 due to the gravity of each component mounted on the flexible circuit board 42 and the shaking of the earphone 20 is reduced, and the fatigue fracture and the component damage caused by the excessive deformation of the flexible circuit board 42 are reduced.

Further, referring to fig. 4, the portion of the flexible circuit board 42 in the sound guide channel 221 is U-shaped and is partially fixed to the inner wall of the mouthpiece 22, and the noise reduction microphone 41 is disposed inside the flexible circuit board 42 and near the sound outlet guide 311. Specifically, the flexible circuit board 42 may include a board body portion 421 and an extension portion 422 connected to each other. The plate portion 421 is disposed in a curved shape and is disposed on the periphery of the sound outlet duct 311. Optionally, the extension 422 extends from the side of the plate body 421 away from the speaker assembly 30 to the side near the tweeter 31 and between the plate body 421 and the sound outlet tube 311. The plate 421 and the extension 422 together enclose the U-shape. The noise reduction microphone 41 is disposed on a side surface of the extension 422 away from the sound outlet duct 311. The extension 422 is opened with a through hole (shown in fig. 4, but not labeled) correspondingly communicating with the sound pickup hole 411. So set up the installation setting that can be convenient for fall the microphone 41 of making an uproar, improve the radio reception effect of falling the microphone 41 of making an uproar, set up plate body portion 421 moreover and buckle the extension 422 that extends, can increase the usable area of flexible circuit board 42, and then can set up more electric property device, extension 422 buckles to extend moreover and can improve the space utilization who leads sound passageway 221, improves structure intensification and compactedness.

Referring to fig. 5-7, in other embodiments, one or more of the blood oxygen detecting element 60, the heart rate detecting element 50, and the infrared sensor (not shown) are further disposed in the sound guiding channel 221. One or more of blood oxygen detecting assembly 60, heart rate detecting assembly 50 and infrared sensor are also disposed on flexible circuit board 42, so that the overall structure of earphone 20 is compact, and the overall volume of earphone 20 is reduced. Optionally, one or more of the blood oxygen detecting component 60, the heart rate detecting component 50 and the infrared sensor may be disposed on another circuit board, which is not limited herein.

Specifically, the peripheral side of the plate portion 421 may be provided with the heart rate detecting component 50 or the blood oxygen detecting component 60, 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 for detecting whether the earphone is worn by the user, so as to turn on or off the earphone according to the situation, thereby achieving the purpose of saving electric power.

In particular, the heart rate detection assembly 50 may include at least one heart rate transmitter and one heart rate receiver. The heart rate transmitter and the heart rate receiver may be mounted on the board portion 421 of the flexible circuit board 42, and may be specifically disposed on an outer side surface of the board portion 421. The heart rate transmitter transmits light to the skin, and after reflection, scattering and absorption by subcutaneous tissue, a part of the light can be reflected from the skin surface and received by the heart rate receiver. In the process, the blood volume of the subcutaneous tissue is pulsated with the heart rhythm, so that the light intensity received by the heart rate receiver is pulsated with the blood volume. The light intensity change signal is converted into an electric signal to obtain the waveform of the blood volume of the subcutaneous tissue along with the pulse change, and the heart rate value is calculated according to the waveform. The heart rate transmitter may for example comprise a light emitting LED and the heart rate receiver may for example comprise a photodiode.

Further, the plate 421 is disposed in a ring shape, such as a circle or a square, around the sound outlet pipe 311, and the plate 421 is sleeved on the sound mouth 22. So set up and to reduce the problem that earphone 20 volume increases because heart rate detection component 50 causes to increase the travelling comfort that earphone 20 wore, and set up and to be able to detect component 50 with the ear canal interval with heart rate in sound mouth 22, with the stability that promotes the detection.

Further, the plate body 421 and the sound guiding channel 221 are disposed conformally, so as to reduce the shielding of the heart rate detecting assembly 50 on the sound guiding channel 221, and increase the smoothness of sound transmission of the sound guiding channel 221. In particular, referring to fig. 6, the heart rate detection assembly 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 face the inner side surface of the mouthpiece 22, respectively. In short, the working surfaces of the elements face outward respectively, so that the emitted light can be emitted into subcutaneous tissues and the reflected light can be received.

In the present embodiment, the light transmittance of the mouthpiece 22 may be greater than or equal to 50%, so that the first and second heart rate transmitters 51 and 53 can transmit light from within the sound guide channel 221 through the mouthpiece 22, and reflected light can be transmitted from the mouthpiece 22 to the first and second heart rate receivers 52 and 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 disposed on the outer side surface of the plate 421 at intervals, so that mutual interference among the four components can be reduced, and the detection accuracy can be improved.

Specifically, the working faces 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 one another. So set up, can ensure that the light of first heart rate transmitter 51 and the transmission of second heart rate transmitter 53 can penetrate into the subcutaneous tissue of duct as much as possible, reduce the condition that the light that the two launches not absorb just directly penetrate into first heart rate receiver 52 and second heart rate receiver 54 through subcutaneous tissue, can increase heart rate detection subassembly 50's interference killing feature, be favorable to improving the accuracy that detects. The working surfaces of the first heart rate emitter 51 and the second heart rate emitter 53 may be referred to as light emitting surfaces thereof, respectively. The working surfaces of the first heart rate receiver 52 and the second heart rate receiver 54 may be referred to as light receiving surfaces thereof, respectively.

Referring to fig. 6 and 7, the plate 421 has at least four outer side surfaces along the circumferential direction, and the four outer side surfaces divide the circumferential side of the plate 421 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 side surfaces of the plate portion 421 in different orientations, so that 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 different in orientation 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 side surfaces of the plate body portion 421, and the second heart rate transmitter 53 and the second heart rate receiver 54 are respectively located on the other two adjacent outer side surfaces of the plate body portion 421.

The plate body 421 is disposed in a curved shape and at least has 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 disposed opposite to each other, the third outer side 421c and the fourth outer side 421d are disposed opposite to each other, 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 emitter 51 and the first heart rate receiver 52 are respectively disposed on two adjacent outer sides of the first outer side 421a to the fourth outer side 421d, and the second heart rate emitter 53 and the second heart rate receiver 54 are respectively disposed on two adjacent outer sides of the first outer side 421a to the fourth outer side 421 d. Optionally, the reinforcing plate 43 is disposed on an inner side surface of the plate body portion 421, which is away from the first outer side surface 421a to the fourth outer side surface 421 d.

In another embodiment, the plate portion 421 may be provided in a rectangular frame, for example, in a racetrack shape, and the first outer side surface 421a, the second outer side surface 421b, the third outer side surface 421c, and the fourth outer side surface 421d are four outer side surfaces of the plate portion 421. Set up plate body portion 421 to the rectangle framework, on the one hand can make four angles of plate body portion 421 can separate two liang first heart rate transmitter 51, first heart rate receiver 52, second heart rate transmitter 53 and second heart rate receiver 54 for plate body portion 421 can shelter from the light path between first heart rate transmitter 51 and the first heart rate receiver 52, reduces the light that first heart rate transmitter 51 directly jetted into first heart rate receiver 52, with the improvement detection accuracy. The second heart rate transmitter 53 and the second heart rate receiver 54 are the same. On the other hand, the plate 421 of the rectangular frame can be stably fitted to the mouthpiece 22.

Earphone 20 further includes a first blood oxygen emitter 61 and a second blood oxygen emitter 62, where first blood oxygen emitter 61 and second blood oxygen emitter 62 are disposed on the same outer side of plate 421, or disposed on different outer sides of plate 421, respectively, and not limited specifically.

Because the 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 as red and green light, and the red and green light is absorbed and reflected by subcutaneous tissues and the blood, so that the reflected light is received by the first heart rate receiver 52 and the second heart rate receiver 54, and after the light intensity signal is converted into an electric signal, the blood oxygen content can be calculated according to an algorithm. First blood oxygen emitter 61 may emit both red and green light (e.g., may have both red and green LEDs), and second blood oxygen emitter 62 may emit both red and green light (e.g., may have both red and green LEDs).

Specifically, first blood oxygen emitter 61 and one of first heart rate emitter 51 and second heart rate emitter 53 are disposed on the same side of board body portion 421, and second blood oxygen emitter 62 and one of first heart rate emitter 51 and second heart rate emitter 53 are disposed on the same side of board body portion 421. Optionally, the faces of first blood oxygen emitter 61 and second blood oxygen emitter 62 are oriented the same as either first heart rate emitter 51 or second heart rate emitter 53, which are located on the same side. The first heart rate receiver 52 and the second heart rate receiver 54 can simultaneously receive the light emitted by the first heart rate emitter 51, the second heart rate emitter 53, the first blood oxygen emitter 61 and the second blood oxygen emitter 62 and reflected by the subcutaneous tissue. First heart rate receiver 52 and second heart rate receiver 54 may also receive the light reflected by the subcutaneous tissue after being emitted from first heart rate emitter 51 and second heart rate emitter 53, and the light reflected by the subcutaneous tissue after being emitted from first blood oxygen emitter 61 and second blood oxygen emitter 62, respectively, and may be determined by the specific algorithm of the chip in the specific calculation of heart rate and blood oxygen.

Further, since first blood oxygen emitter 61 and second blood oxygen emitter 62 are also emitting light, after reflection, scattering and absorption by subcutaneous tissue, part of the light enters first heart rate receiver 52 and second heart rate receiver 54 to be converted into electric signals. The technical effects of the arrangement positions and the working face orientations of the first blood oxygen emitters 61 and the second blood oxygen emitters 62 in this embodiment are at least the same as the technical effects of the heart rate detecting assembly 50, and will not be described again.

Through set up first heart rate transmitter 51, second heart rate transmitter 53, first heart rate receiver 52 and second heart rate receiver 54 on plate body portion 421 for this application earphone 20 can test two sets of heart rate data simultaneously through above-mentioned component, and two sets of heart rate data pass through the algorithm calculation and can increase the degree of accuracy that the heart rate detected. Through setting up above-mentioned component interval for this application earphone 20 can realize the rhythm of the heart detection through the subcutaneous tissue of different regions in the duct, more can reflect the average level of rhythm of the heart, has improved the detection accuracy. Further, by arranging the orientations of the working faces of the above-described elements to be different from each other, and by the structural design of the plate body portion 421, it is possible to reduce the case where the light rays emitted from the first heart rate emitter 51 and the second heart rate emitter 53 directly enter the first heart rate receiver 52 and the second heart rate receiver 54 without being absorbed by subcutaneous tissues, thereby improving the accuracy of detection. Earphone 20 is further provided with blood oxygen detection functionality by the addition of first blood oxygen emitter 61 and second blood oxygen emitter 62.

In summary, by disposing the speaker assembly 30 in the accommodating cavity 211 of the housing 21 to enable the earphone 20 to emit sound, and by disposing the sound outlet duct 311 and the noise reduction microphone assembly 40 at an interval in the sound guide channel 221 of the mouthpiece 22, high-quality and smooth transmission of high-pitched sound emitted from the speaker assembly 30 to the outside through the sound outlet duct 311, and high-quality and smooth transmission of low-pitched sound emitted from the speaker assembly 30 to the outside through the low-pitched sound channel isolated from the high-pitched sound can be achieved, and at the same time, the influence of the noise reduction microphone assembly 40 on sound emission from the speaker assembly 30 is reduced, and the acoustic performance of the earphone 20 is further improved. Disposing the noise reduction microphone assembly 40 in the sound guide channel 221 also facilitates reducing the size of the housing 21, which helps to improve the wearing comfort of the earphone 20.

The above embodiments are merely examples, and not intended to limit the scope of the present application, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present application, or those directly or indirectly applied to other related arts, are included in the scope of the present application.

Claims (11)

1. An earphone, comprising:

a housing having a receiving cavity, wherein the receiving cavity is provided with a plurality of receiving holes,

the sound mouth is connected with the shell and is provided with a sound guide channel communicated with the accommodating cavity;

the loudspeaker assembly is partially accommodated in the accommodating cavity, wherein the loudspeaker assembly at least comprises a high pitch loudspeaker and a sound outlet guide pipe, one end of the sound outlet guide pipe is connected with the high pitch loudspeaker, and the other end of the sound outlet guide pipe extends into the sound guide channel towards the sound mouth; the sound outlet pipe is used for transmitting the sound emitted by the high pitch loudspeaker to the outside of the sound mouth through the sound outlet pipe.

2. The headset of claim 1, wherein:

the speaker assembly further includes a woofer connected to the tweeter, the woofer being located within the receiving chamber and disposed remotely from the outlet conduit; at least one sound outlet hole is formed in the woofer, and sound emitted by the woofer is transmitted to a bass channel between the sound mouth and the sound outlet conduit through the sound outlet hole.

3. The headset of claim 1, wherein:

the earphone also comprises a noise reduction microphone assembly accommodated in the sound guide channel, the noise reduction microphone assembly comprises a flexible circuit board and a noise reduction microphone, and the noise reduction microphone is arranged on the flexible circuit board and is electrically connected with the flexible circuit board; the noise reduction microphone comprises a sound pickup hole, and the sound pickup hole is positioned between the sound outlet pipe and the sound mouth.

4. The headset of 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 guide pipe.

5. The headset of 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 microphone of making an uproar set up in the inboard of flexible circuit board just is close to go out the sound pipe, set up on the flexible circuit board with the through-hole that pickup hole corresponds the intercommunication.

6. The headset of claim 2, wherein:

the high pitch loudspeaker and the low pitch loudspeaker are partially nested, the maximum outer diameter of the low pitch loudspeaker is larger than that of the high pitch loudspeaker, and the sound outlet hole is formed in the part, larger than that of the high pitch loudspeaker, of the outer diameter of the low pitch loudspeaker.

7. The headset of claim 1, wherein:

keep away from of sound mouth the one end of casing is equipped with leads the sound mouth, it is provided with the filter screen to lead the sound mouth, just to go out keeping away from of sound pipe the one end of high pitch loudspeaker is close to the filter screen sets up.

8. The headset of claim 3, wherein:

one or more of a blood oxygen detection component, a heart rate detection component and an infrared sensor are also arranged in the sound guide channel.

9. The headset of claim 8, wherein:

one or more of the blood oxygen detection component, the heart rate detection component and the infrared sensor are also arranged on the flexible circuit board.

10. The headset of claim 2, wherein:

the high pitch loudspeaker is one of a moving coil loudspeaker, a moving iron loudspeaker and a coil iron loudspeaker, and the low pitch loudspeaker is one of a moving coil loudspeaker, a moving iron loudspeaker and a coil iron loudspeaker.

11. An earphone system, comprising at least one earphone according to any one of claims 1 to 10 and a charging box for accommodating the earphone and charging the earphone after the earphone is placed in the charging box.

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