CN220273835U - Earphone with adjustable sound effect - Google Patents

Abstract

The utility model relates to the technical field of electronic products, in particular to an earphone capable of adjusting sound effects, an earphone wire with the sound effects and an earphone with a replaceable loudspeaker assembly. A tunable sound effect earphone comprising: the shell is provided with a sound outlet hole; the circuit board is arranged in the shell and integrates a frequency division control system, a low-frequency unit, an intermediate-frequency unit and a high-frequency unit; the loudspeaker is arranged in the shell and is close to the sound outlet; the adjusting switch is arranged on the shell; the circuit board is electrically connected with the loudspeaker and the regulating switch. According to the technical scheme, a frequency division control system is adopted, and the audio signals are processed through a low-frequency unit, an intermediate-frequency unit and a high-frequency unit to obtain sound wave signals with different sound effects. The earphone has a simple and compact structure, the adjusting switch can select different sound effects, the functions are rich, and the personalized pursuit of the different sound effects is satisfied.

Description

Earphone with adjustable sound effect

Technical Field

The utility model relates to the technical field of electronic products, in particular to an adjustable sound effect earphone.

Background

The requirements of the electronic products (earphone, mobile phone, iPad, notebook computer) on the quality of the played audio are continuously improved in the use process, especially in the case of using the earphone. The earphone in the market mainly comprises a moving iron earphone and a moving coil earphone. Earphone fever friends have different pursuits for low frequency, medium frequency and high frequency, such as low frequency full, medium frequency clear and high frequency clear in the process of listening to music or making a call. Sometimes, a certain mode is preferred, and personalized special effects are realized.

Very few headphones have been found that can switch between different frequency ranges.

Disclosure of Invention

The utility model mainly aims to improve the earphone with the adjustable sound effect, the earphone wire with the adjustable sound effect and the earphone with the replaceable loudspeaker component.

A tunable sound effect earphone comprising:

the shell is provided with a sound outlet hole;

the circuit board is arranged in the shell and integrates a frequency division control system, a low-frequency unit, an intermediate-frequency unit and a high-frequency unit;

the loudspeaker is arranged in the shell and is close to the sound outlet;

the adjusting switch is arranged on the shell;

the circuit board is electrically connected with the loudspeaker and the regulating switch.

Further, the housing is provided with a containing chamber, and the containing chamber is communicated with the sound outlet hole.

Furthermore, the circuit board and the loudspeaker are accommodated in the accommodating cavity, and the loudspeaker is close to one side of the sound outlet.

Further, the regulating switch is provided with four gears.

Further, the low frequency unit is used for filtering high frequency, and the intermediate frequency unit and the high frequency unit are used for filtering low frequency.

Further, the low frequency unit, the intermediate frequency unit and the high frequency unit are second order filtering.

According to the technical scheme, a frequency division control system is adopted, and the audio signals are processed through a low-frequency unit, an intermediate-frequency unit and a high-frequency unit to obtain sound wave signals with different sound effects. The earphone has a simple and compact structure, the adjusting switch can select different sound effects, the functions are rich, and the personalized pursuit of the different sound effects is satisfied.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an earphone according to an embodiment of the present utility model;

fig. 2 is an exploded view of the earphone of fig. 1;

FIG. 3a is a schematic circuit board diagram of the earphone shown in FIG. 2;

fig. 3b is a schematic diagram of a low frequency unit of the earphone shown in fig. 2;

fig. 3c is a schematic diagram of an intermediate frequency unit of the earphone shown in fig. 2;

fig. 3d is a schematic diagram of a high frequency unit of the earphone shown in fig. 2;

fig. 4 is a schematic diagram of a cellular unit structure of an earphone according to an embodiment of the present utility model;

fig. 5 is a schematic diagram of an earphone line with an adjusting sound effect of an earphone according to an embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a control box of an earphone cord with an earphone wire for adjusting sound effects according to an embodiment of the present utility model;

fig. 7 is a schematic diagram of an earphone structure of a replaceable speaker assembly according to an embodiment of the present utility model;

fig. 8 is a schematic cross-sectional view of an earphone with a replaceable speaker assembly according to an embodiment of the present utility model;

fig. 9 is a schematic diagram of an earphone assembly with a replaceable speaker assembly according to an embodiment of the present utility model.

Reference numerals illustrate:

1. an earphone; 100. an earphone line;

101. a first cavity; 102 a second cavity; 1021. a honeycomb unit; 103. a receiving chamber; 104. a sound outlet hole;

11. a housing;

111. an upper case; 1111. a cover; 1112. a shell skirt;

112. a lower case; 1121. a shell and abdomen; 1122. tail tube; 1122a, a limit flange;

12. a circuit board;

121. a frequency division control system; 122. a low frequency unit; 123. an intermediate frequency unit; 124. a high frequency unit;

13. a speaker; 14. an adjusting switch; 15. a female seat; 16. an ear plug sleeve;

17. a wire rod;

171. a metal wire; 172. a lacquer leather line; 173. an organic material;

18. a control box;

181. an upper cover; 1811. a through hole; 182. a lower cover; 183. a control board;

2. an earphone;

201. a first cavity; 202. a second cavity; 203. a receiving chamber; 204. a first outlet; 205. a second accommodating chamber; 206. sound outlet

21. A housing;

211. an upper case; 2111. a cover; 2112. a shell skirt;

212. a lower case; 2121. a shell and abdomen; 2122. tail tube;

22. a speaker assembly;

221. a housing; 222. a speaker; 223. a second magnet;

2211. a first housing; 2211a, a first space;

2212. a second housing; 2212b, a second space;

23. a female seat; 24. a first magnet;

25. a connection terminal;

251. a positive terminal; 252. a negative terminal;

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" is presented throughout this document, it is intended to include three schemes in parallel, taking "a and/or B" as an example, including a scheme, or B scheme, or a scheme where a and B meet simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides an earphone 1, wherein the earphone 1 is a wired earphone and can be matched with equipment with an audio output port to receive audio signals and output the audio signals to a user. The earphone wire of the earphone 1 can be fixedly connected to the earphone or can be connected to the earphone in a plug-in mode through a connector.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an earphone according to some embodiments of the present utility model; fig. 2 is an exploded view of the earphone shown in fig. 1. In the embodiment, the earphone 1 is a plug-in type wiring earphone, and the earphone 1 includes a housing 11, a circuit board 12, a speaker 13, and an adjusting switch 14.

Fig. 2 and the following related drawings only schematically show some parts of the earphone, the actual shape, the actual size and the actual position of which are not limited by the drawing of fig. 2.

When the user uses the earphone 1, the shell 11 is directly contacted with the ear, so as to avoid the earphone 1 from causing the pain of the auditory canal of the user, improve the wearing comfort of the user, and the shell 11 can be customized according to the outline of the auditory canal of the user.

The shell 11 is used as a functional carrier of the earphone 1, contacts with the user, contacts with the outside, and is connected with an earphone wire, so that the shell needs to have certain strength and rigidity, scratches and the like on the surface of the shell 11 are avoided, and the shell also has the performances of wear resistance, collision resistance, brittleness resistance, corrosion resistance and the like, so that the shell is made of metal materials, hard plastics, composite materials and the like, and the surface can be subjected to wear resistance and corrosion resistance treatment. To achieve a light weight of the headset 1, a material with a low density may be selected.

In the embodiment, the housing 11 may be a single structure or may be assembled from multiple parts. Referring to fig. 2, the housing 11 includes an upper case 111 and a lower case 112. Wherein the upper shell 111 is distant from the ear canal when the headset 1 is in use and the lower shell 112 is close to the ear canal when the headset 1 is in use. The upper shell 111 is formed by assembling the shell cover 1111 and the shell skirt 1112, so that the processing is convenient, the shell cover 1111 is integrated, the forming process and the die structure are simplified, and the appearance of the upper shell 111 is more attractive and concise. The cover 1111 and skirt 1112 may be attached by adhesive, snap fit or screws. The lower shell 112 is formed by assembling the shell web 1121 and the tail tube 1122, so that the shell web 1121 and the tail tube 1122 can be conveniently and respectively processed, the structure of a die is simplified, the processing difficulty is reduced, and the appearance of the lower shell 112 is more attractive, smooth and concise. The shell web 1121 and tail tube 1122 may be joined by adhesive, snap fit, or screw connection.

Referring to fig. 2, the skirt 1112 of the upper case 111 is located on one side of the case cover 1111 and extends in a direction away from the case cover 1111. The cover 1111 and skirt 1112 of the upper shell 111 are assembled to form a first cavity 101, and a side of the first cavity 101 adjacent to the lower shell 112 is open.

The tail tube 1122 of the lower shell 112 is located on one side of the shell web 1121 and extends in a direction away from the shell web 1121. The web 1121 of the lower shell 112 and the tail tube 1122 are assembled to form the second chamber 102, and the side of the second chamber 102 adjacent to the upper shell 111 is open. The first cavity 101 and the second cavity 102 are communicated to form a housing chamber 103 of the housing 11.

Specifically, the cover 1111 of the upper case 111 may be formed separately from the first cavity 101, that is, the cover 1111 and the web 1121 of the lower case are assembled to form the accommodating chamber 103 of the outer case 11.

Referring to fig. 2, the end of the tail tube 1122 of the lower shell 112 forms a sound outlet 104, the second cavity 102 communicates with the sound outlet 104, and sound can be transmitted out of the earphone 1 through the sound outlet 104.

The upper case 111 and the lower case 112 are connected in the following manner: bonding, clamping, and the like.

In order to improve the user's experience of using the headset 1, the headset 1 may further be provided with a plug 16, and the plug 16 is disposed on the outer peripheral surface of the end portion of the tail tube 1122. The earmuff 16 comprises a silicone sleeve, rubber sleeve, or the like.

Referring to fig. 2, a stopper flange 1122a is provided on the outer peripheral surface of the end portion of barrel 1122, and stopper flange 1122a prevents removal of earbud 16 when earbud 16 is provided on the outer peripheral surface of the end portion of barrel 1122.

The circuit board 12 is accommodated in the accommodating chamber 103, and specific mounting modes include screw connection, bonding or clamping connection and the like.

Referring to fig. 3a, the circuit board 12 integrates a frequency division control system 121, a low frequency unit 122, an intermediate frequency unit 123, a high frequency unit 124, and the like. The circuit board 12 is electrically connected with the loudspeaker 13, the regulating switch 14, the female seat 15 and other functional devices to realize the operations of audio signal control, data signal processing and the like.

Specifically, the speaker 13 is disposed in the accommodating chamber 103 and is close to the sound outlet 104. The connection mode of the speaker 13 and the housing 11 includes screw connection, adhesion, clamping connection, etc. The low frequency unit 122, the intermediate frequency unit 122, and the high frequency unit 124 are electrically connected to the speaker 13, respectively, and the crossover control system 121 performs crossover processing on the acquired audio signal by the corresponding units (the low frequency unit 122, the intermediate frequency unit 123, and the high frequency unit 124) and converts the audio signal into an acoustic wave signal, and the audio signal may be converted into the acoustic wave signal without crossover diameter by the crossover control system 121. The schematic diagrams of the low frequency unit 122, the intermediate frequency unit 123, and the high frequency unit 124 are shown in fig. 3b, 3c, and 3d. R1 and R2 represent resistors, C1 and C2 represent capacitors, BY is a loudspeaker, the capacitors have the function of isolating and crossing, filtering effects of different functions can be achieved BY adjusting the connection mode of the resistors and the capacitors, and waveform signals with different frequencies can be filtered BY adjusting the sizes of the resistors and the capacitors.

In the above embodiment, the speaker 13 of the earphone 1 is a moving coil speaker, a moving iron speaker or a combination of both, and the moving coil speaker is adopted, so that the earphone 1 has low cost and good bass effect, and the moving iron speaker is adopted, so that the power of the earphone 1 can be reduced, and the earphone has high fidelity characteristic. Because the space occupied by the moving iron loudspeaker is smaller, a plurality of groups of moving iron loudspeakers can be arranged, and the sound quality with better effect is obtained.

The adjusting switch 14 is disposed on a circumferential line formed by assembling the shell skirt 1112 and the shell web 1121, and the assembling manner of the adjusting switch 14 and the shell 11 includes screw connection, adhesion or clamping connection.

Referring to fig. 1 and 2, in the embodiment, the adjusting switch 14 of the middle ear camera 1 is provided with four gears, and the 1 st gear corresponds to no processing, that is, the normal audio signal is converted into the sound wave signal; gear 2 corresponds to low frequency processing 122, i.e., low frequency boosting; the 3 rd grade corresponds to the intermediate frequency unit 123, namely noise reduction, clear and bright audio; the 4 th grade corresponds to the high frequency unit 124, namely, the tone quality of the audio is improved, and the sound is better and more beautiful.

The speaker frequency response curve reflects the response of sound pressure, phase and frequency. The curve is smooth, the wave crest and the wave trough are fewer, the frequency band is wide, and the curve can truly reflect the original sound; the low-frequency and high-frequency components are improved, and the high-frequency and high-frequency components are more suitable for auditory characteristics, and the curve is a high-fidelity curve.

Mixing low frequency components in the middle and high frequency regions causes clouding of the low frequency. To prevent interference at non-operating frequencies, it is necessary to filter out the sound wave processing, with RC high-pass and low-pass circuits.

The low frequency unit 122 mainly filters out the high frequency part and improves the low frequency component, and may set first order, second order, third order, and … … N order filtering to improve the filtering effect. Similarly, the intermediate frequency unit 123 and the high frequency unit 124 mainly filter out the low frequency part, and improve the high frequency component, and in order to improve the filtering effect, first order, second order, third order, and … … N order filtering may be provided.

The above-mentioned adjusting switch 14 may be provided with any number of gear steps, and any range between the corresponding low frequency unit 122 and high frequency unit 124, specifically, a frequency range of 20Hz to 20kHz, preferably 500Hz to 5kHz.

The female seat 15 is disposed on a circumferential line formed by assembling the shell skirt 1112 and the shell belly 1121, and is far away from the adjusting switch 14, and the assembling manner of the female seat 15 and the shell 11 includes screw connection, bonding or clamping.

The female seat 15 is optionally a balanced female seat of 4.4mm, a balanced female seat of 3.5mm or a balanced female seat of 2.5 mm. It can be seen that the plugs of the corresponding wires are matched with the female sockets. When the earphone cord is fixedly connected to the earphone 1, the female socket may be omitted.

In other embodiments of the present utility model, referring to fig. 4, fig. 4 is a block diagram of the second chamber 102 according to still other embodiments of the present utility model. The second cavity 102 is honeycomb-shaped, each of the honeycomb units 1021 can accommodate a speaker 13, and the speaker 13 is adjacent to one side of the sound outlet 104. At least one of the speakers 13 is a moving coil speaker and/or at least one moving iron speaker.

Each speaker 13 has an independent cavity space, and the speaker 13 corresponds to the low frequency unit 122, the intermediate frequency unit 123, and the high frequency unit 124, and the frequency response range can be widened and the distortion can be reduced through the frequency division processing of the frequency division control system 121. The frequency division control system 121 performs frequency division processing on the audio signal by controlling the low frequency unit 122, the intermediate frequency unit 123 and the high frequency unit 124 respectively, converts the processed audio signal into an acoustic wave signal through a corresponding speaker, and finally transmits the acoustic wave signal to the sound outlet 104. The cellular unit 1021 may avoid interference between units, facilitating audio conditioning of the individual units.

In another embodiment of the present utility model, referring to fig. 5 and 6, fig. 5 is an earphone line with an adjusting switch of the present utility model. Fig. 6 is a schematic structural view of an earphone line with an adjusting switch. The earphone line 100 includes a wire 17 and a control box 18. Inside the wire 17 is a metal wire 171, outside of which is a lacquer wire 172, outside of which is an organic material 173.

The metal wire is made of soft metal with good conductivity, preferably copper wire. The organic material is selected from PVC polyvinyl chloride material, TPU polyurethane material and TPE thermoplastic elastomer material.

The control box 18 is arranged on the wire rod, the control box 18 is provided with an adjusting switch 14, and the adjusting switch 14 is electrically connected with the frequency division control system 121 through a wire. The frequency division control function can be realized by controlling the adjusting switch 14. Specifically, the adjusting switch 14 sets four gears, and the 1 st gear is not processed, namely, the normal audio signal is converted into the sound wave signal; gear 2 corresponds to low frequency processing 122, i.e., low frequency boosting; the 3 rd grade corresponds to the intermediate frequency unit 123, namely noise reduction, clear and bright audio; the 4 th grade corresponds to the high frequency unit 124, namely, the tone quality of the audio is improved, and the sound is better and more beautiful.

In the above embodiment, the adjusting switch 14 is arranged on the wire 17, so that the weight of the earphone 1 is reduced, the earphone space is not occupied, the earphone shell mold structure is simplified, and the earphone cost is reduced. The split design can be adjusted without taking off the earphone when adjusting, and the operation is simple and convenient.

The control box 18 may be formed as a unitary structure or may be assembled from a plurality of sections. Referring to fig. 6, the control box 18 includes an upper cover 181 and a lower cover 182. The bottom opening of the upper cover 181 is matched with the lower cover 182, and concrete connection modes include screw connection, bonding or clamping connection and the like.

The upper cover 181 is provided with a through hole 1811 for the passage of the adjusting switch 14, the adjusting switch 1811 is arranged on the control board 183, and the adjusting switch 14 is electrically connected with the frequency division control system 121 through a wire.

Both ends of the wire 17 of the earphone line 100 are respectively connected to plugs (not shown) which are matched with the above-mentioned female sockets 15.

In another embodiment of the present utility model, referring to fig. 7, 8 and 9, fig. 7 is a schematic structural diagram of a split speaker earphone according to the present utility model, and fig. 8 is a schematic sectional diagram of a split speaker earphone according to the present utility model. The earphone 2 is a wired earphone, and can be used with a device having an audio output port, and receives an audio signal and outputs the audio signal to a user. The earphone wire of the earphone 2 can be fixedly connected to the earphone or can be connected to the earphone in a plug-in mode through a connector.

The headphones shown in fig. 7, 8 and 9 are described by taking a plug-in headphone as an example. In an embodiment, the headset 2 comprises a housing 21, a speaker assembly 22 and a female holder 23. When the earphone line is fixedly connected to the earphone 2, the female socket 23 may not be included.

In the embodiment, the housing 21 may be a single structure or may be assembled from multiple parts. Referring to fig. 6, the housing 21 includes an upper case 211 and a lower case 212. Wherein the upper shell 211 is away from the ear canal when the headset 2 is in use and the lower shell 212 is close to the ear canal when the headset 2 is in use. The upper shell 211 is assembled by the shell cover 2111 and the shell skirt 2112, so that the processing is convenient, the shell cover 2111 is integrated, the forming process and the die structure are simplified, and the appearance of the upper shell 211 is more attractive and concise. Cap 2111 and skirt 2112 may be attached by adhesive, snap fit, or screws. Lower shell 212 is formed by assembling shell web 2121 and tail tube 2122, which facilitates the separate machining of shell web 2121 and tail tube 2122, simplifies the structure of the mold, reduces the machining difficulty, and makes lower shell 112 more attractive, smooth and compact in appearance. The shell web 1121 and tail tube 1122 may be joined by adhesive, snap fit, or screw connection.

Referring to fig. 7, the skirt 2112 of the upper case 211 is located at one side of the case cover 2111 and extends in a direction away from the case cover 2111. The cover 2111 and skirt 2112 of the upper shell 111 are assembled to form a first cavity 201, and a side of the first cavity 201 adjacent to the lower shell 212 is open.

A tail tube 2122 of lower shell 212 is located on one side of web 2121 and extends away from web 2121. Lower shell 212 has a shell web 2121 and a tail tube 2122 assembled to form second cavity 202, with second cavity 202 open on a side adjacent upper shell 211. The first cavity 201 communicates with the second cavity 202 to form a receiving chamber 203 of the housing 11.

Specifically, the housing cover 2111 of the upper housing 211 may separately form the first cavity 201 described above, that is, the housing cover 2111 and the housing web 2121 of the lower housing are assembled to form the accommodation chamber 203 of the housing 21.

Referring to FIG. 7, the end of tail tube 2122 of lower housing 212 defines a first outlet 204, and second chamber 202 communicates with first outlet 204. First outlet 204 has an aperture that allows the outer diameter of speaker assembly 22 to be matched.

A first magnet 24 is provided at the center of the inner surface (i.e., the side facing the first outlet 204) of the cover 2111, the first magnet 24 is cylindrical and is disposed concentrically with the first outlet 204, and a connection terminal 25 is provided near the first magnet 24 on the inner surface of the cover 2111.

The terminal 25 includes a positive end 251 and a negative end 252.

The positive end 251 of the terminal 25 is a circular metal guide piece, and the negative end 252 of the terminal is connected to the first magnet 24. The other end of the connecting terminal 25 is electrically connected with the female base 23.

The speaker assembly 22 is accommodated in the accommodating chamber 203. The speaker assembly 22 includes a housing 221, a speaker 222, and a second magnet 223.

The shell 221 is used as a functional carrier of the earphone 2, contacts with the user, contacts with the outside, and is connected with the shell, so that the shell needs to have certain strength and rigidity, scratches and the like on the surface of the shell 221 are avoided, and the shell also has the performances of wear resistance, collision resistance, brittleness resistance, corrosion resistance and the like, so that the shell is made of metal materials, hard plastics, composite materials and the like, and the surface can be subjected to wear resistance and corrosion resistance treatment. To achieve a light weight of the headset 2, a material with a low density may be selected.

The housing 221 may be of unitary construction or may be assembled from multiple parts. Referring to fig. 7 and 8, the housing 221 includes a first housing 2211 and a second housing 2212. The first housing 2211 is funnel-shaped, a first space 2211a is formed inside the first housing 2211, the second housing 2212 is barrel-shaped, a second space 2212b is formed inside the second housing 2212, and the first space 2211a is communicated with the second space 2212b to form the second accommodating chamber 205.

The tail end of the first housing 2211 far from the first space 2211a is reduced in aperture to form the sound outlet 206, the first space 2211a is communicated with the sound outlet 206, and sound can be transmitted out of the earphone 2 through the sound outlet 206.

The first housing 2211 and the second housing 2212 are connected in the following manner: bonding, clamping, and the like.

In order to improve the experience of the user using the earphone 2, the earphone 2 may further be provided with an earmuff 16, and the earmuff 16 is disposed on the outer peripheral surface of the tail end portion of the first housing 2211 away from the first space 2211 a. The earmuff 16 comprises a silicone sleeve, rubber sleeve, or the like.

Referring to fig. 7 and 8, the first housing 2211 is provided with a stopper flange 1122a at the outer circumferential surface of the end portion of the first space 2211a, and the stopper flange 1122a can prevent the earmuff 16 from falling off when the earmuff 16 is provided at the outer circumferential surface of the end portion of the first housing 2211 remote from the first space 2211 a.

The speaker 222 is accommodated in the second accommodating chamber 205 and is close to the sound outlet 206, and the connection mode of the speaker 222 and the housing 221 includes screw connection, adhesion or clamping connection.

The speakers 222 are of different kinds, and a change in sound quality is achieved by changing the speakers 222. The speaker 22 may include a moving coil speaker, a moving iron speaker, or the like.

Sounding principle of moving coil earphone: the coil of the moving coil loudspeaker is fixed on the cone and is arranged in the magnetic field, and Lorentz force is generated in the magnetic field and moves when the current in the coil of the loudspeaker changes, so that the cone is driven to vibrate to produce sound, and an audio electric signal is converted into an acoustic wave signal.

The generation principle of the moving iron earphone is as follows: the key components are balance armature transducer, which mainly comprises coil, balance armature, drive rod, magnet, vibrating plate and vibrating diaphragm, acoustic pipe and shell. The coil, the vibrating plate and the vibrating diaphragm are fixed together, the audio electric signal changes in the coil, the magnet vibrates under the action of magnetic force, and the vibration is transmitted to the vibrating diaphragm through the transmission rod. The audio electrical signal is also converted into an acoustic signal.

Referring to fig. 7, a circular metal guide piece is provided at the bottom of the second housing 2212 (i.e., on the side facing away from the sound outlet 206) corresponding to the lead wire of the terminal 25 on the inner surface of the housing cover 2111. The second magnet 223 is provided at the center of the bottom of the second housing 2212 (i.e., the side facing away from the sound outlet 206) corresponding to the first magnet 24 on the inner surface of the housing cover 2111.

The positive electrode lead of the speaker 222 is electrically connected to a circular metal guide provided at the bottom of the second housing 2212, and the negative electrode lead of the speaker 222 is electrically connected to the second magnet 223 provided at the bottom of the second housing 2212. When speaker assembly 22 is placed at the end of tail tube 2122 of lower housing 212 to form first outlet 204, second magnet 223 of speaker assembly 22 magnetically attracts first magnet 24 of housing 21 and is secured within receiving chamber 203. At this time, the positive and negative electrodes of the speaker 222 are respectively conducted with the positive and negative electrode terminals 251 and 252 of the connection terminal 25 through the leads.

In order to obtain the expressive force of different sound effects, the individual pursuits of the music fever friends can be satisfied by replacing the loudspeaker assemblies 22 with different sound production frequencies. Meanwhile, the speaker assembly 22 can be provided with different sounding frequencies or a plurality of speakers with different sounding frequencies are arranged in the same speaker assembly 22, so that the same earphone can change various sound effects.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (6)

1. An adjustable sound effect earphone, comprising:

a housing (11), wherein the housing (11) is provided with a sound outlet (104);

the circuit board (12), the said circuit board (12) locates in the outer casing (11), the said circuit board (12) integrates the frequency division control system (121), low frequency unit (122), intermediate frequency unit (123), high frequency unit (124);

a speaker (13), wherein the speaker (13) is arranged in the shell (11) and is close to the sound outlet hole (104);

an adjusting switch (14), wherein the adjusting switch (14) is arranged on the shell (11);

the circuit board (12) is electrically connected with the loudspeaker (13) and the regulating switch (14).

2. Adjustable earphone according to claim 1, characterized in that the housing (11) is provided with a receiving chamber (103), the receiving chamber (103) being in communication with the sound outlet (104).

3. The adjustable earphone according to claim 2, wherein the circuit board (12) and the speaker (13) are both accommodated in the accommodating chamber (103), and the speaker (13) is close to one side of the sound outlet (104).

4. A tuneable earphone according to claim 3, characterised in that the adjustment switch (14) is provided with a fourth gear.

5. A tuneable earphone according to claim 3, wherein the low frequency unit (122) is adapted to filter out high frequencies, and the intermediate frequency unit (123) and the high frequency unit (124) are adapted to filter out low frequencies.

6. The tunable sound effect earphone of any one of claims 4-5, wherein the low frequency unit (122), the medium frequency unit (123) and the high frequency unit (124) are second order filters.