CN219802568U - Earphone box external-placing system and earphone assembly - Google Patents

Abstract

The utility model discloses an earphone box external placement system and an earphone assembly, wherein the earphone box external placement system comprises a control unit, an external placement unit and at least one electromagnetic induction unit, wherein each electromagnetic induction unit is used for respectively inducing the magnetic field change generated by each corresponding earphone so as to generate corresponding induction current; the external amplifying unit is used for performing external amplification according to the received current signal; the electromagnetic induction unit is electrically connected with the external unit so as to control the connection or disconnection between the electromagnetic induction unit and the external unit. According to the technical scheme, the earphone box is switched to the outward-playing mode more simply and conveniently.

Description

Earphone box external-placing system and earphone assembly

Technical Field

The utility model relates to the technical field of earphone assemblies, in particular to an earphone box external placement system and an earphone assembly.

Background

With rapid development of earphone technology, application occasions of TWS (true wireless stereo ) earphones are also becoming wider, and functions of the TWS earphones are also becoming more and more. In the use process of the TWS earphone, when the electric quantity is insufficient, the TWS earphone needs to be put back into the earphone box for charging, and therefore the earphone box is usually an essential accessory of the TWS earphone.

However, if the earphone box is used only for charging the earphone, the function is too single, and the earphone box is only used when the earphone needs to be charged. In order to increase the use viscosity of the earphone box by a user, the existing part of earphone box products are additionally provided with the function of putting the earphone box outside, so that the earphone box can be used as a sound by the user. The implementation mode of the external playing function of the existing earphone box is to establish Bluetooth connection with the earphone box through electronic equipment such as a mobile phone or a tablet and the like so as to transmit digital audio signals to the earphone box for the earphone box to carry out external playing. The mode has the following defects that a user needs to disconnect the Bluetooth connection with the earphone firstly and then pair with the earphone box, the operation is complex, and the use is very inconvenient.

Disclosure of Invention

The utility model provides an earphone box outward-playing system, which aims at enabling a user to use the outward-playing function of an earphone box to be simpler and more convenient to operate.

In order to achieve the above object, the present utility model provides an earphone box playback system, comprising:

each electromagnetic induction unit is used for inducing the magnetic field change generated by the corresponding earphone so as to generate corresponding induction current;

the external amplifying unit is used for carrying out external amplification according to the received current signal; and

and the control unit is electrically connected between the electromagnetic induction unit and the external unit so as to control the connection or disconnection between the electromagnetic induction unit and the external unit.

In some embodiments, the control unit includes an MCU, a switch subunit, and a trigger subunit, and the electromagnetic induction unit is electrically connected to the discharging unit via the switch subunit; the MCU is electrically connected with the switch subunit and the trigger subunit, and controls the switching state of the switch subunit according to the on signal or the off signal generated by the trigger subunit so as to control the on or off between the electromagnetic induction unit and the discharging unit.

In some embodiments, the triggering subunit comprises an input subunit and a detection subunit, wherein the detection subunit is used for outputting corresponding signals according to the open-close state of the earphone box; the MCU is electrically connected with the input subunit and the detection subunit respectively, and the MCU controls the switch subunit to switch states according to signals output by the input subunit and signals output by the detection subunit.

In some embodiments, the control unit further includes at least one trigger switch for sensing the earphone, the trigger switch corresponds to the electromagnetic induction units one by one, and the electromagnetic induction units are electrically connected to the switch sub-units through the trigger switches corresponding to the electromagnetic induction units.

In some embodiments, the control unit further comprises a timing subunit electrically connected between the trigger switch and the MCU.

In some embodiments, the earphone box external system further comprises a charging unit for charging the earphone, the charging unit is electrically connected with the switch subunit, and the MCU controls the switch subunit to switch the state so as to enable the charging unit to be started or closed.

In some embodiments, the earphone box pay-out system further comprises a power supply unit for supplying power, and the power supply unit is electrically connected with the control unit and the pay-out unit.

In some embodiments, the external amplifying unit includes a pre-amplifying subunit, a power amplifying subunit and an external amplifying horn, the input end of the pre-amplifying subunit is electrically connected to the control unit, and the output end of the pre-amplifying subunit is electrically connected to the external amplifying horn through the power amplifying subunit.

In some embodiments, the earphone box external system further comprises at least one conducting unit for transmitting the magnetic field generated by the earphone, the conducting unit is in one-to-one correspondence with the electromagnetic induction units, the conducting unit is arranged on the earphone box or the corresponding earphone, and the conducting unit is electromagnetically coupled with the corresponding electromagnetic induction unit.

In some embodiments, the electromagnetic induction unit is a mutual inductance coil, and the conduction unit is a transit coil; the transfer coil is used for being electrically connected with the corresponding earphone, and converting the audio signals of the earphone into corresponding magnetic fields.

In some embodiments, the electromagnetic induction unit is a mutual inductance coil, and the conduction unit is a magnetic conduction member; one end of the magnetic conduction piece is close to a loudspeaker of the earphone, and the other end of the magnetic conduction piece is close to the mutual inductance coil.

The utility model also provides an earphone assembly, which comprises the earphone box and the earphone box external placement system, wherein the electromagnetic induction unit, the external placement unit and the control unit are arranged on the earphone box.

In some embodiments, the earphone assembly further comprises at least one earphone, the earphone box is provided with accommodating cavities corresponding to the earphone one by one, the earphone is accommodated in the corresponding accommodating cavity, and the electromagnetic induction units correspond to the accommodating cavities one by one.

According to the technical scheme of the earphone box external-amplifying system, the electromagnetic induction unit is used for inducing the change of the magnetic field of the earphone horn so as to induce corresponding induction current, namely, a current signal synchronous with the change of the audio signal of the earphone is obtained, the induction current is controlled to be output to the external-amplifying unit, and the external-amplifying unit performs external-amplifying output after amplifying the received induction current, so that the external-amplifying function of the earphone box is realized. When the earphone component of the earphone box external placement system is needed to be switched into the earphone box for external placement, the earphone is placed in the earphone box, the electromagnetic induction unit is electrically connected with the external placement unit through the control unit, connection (Bluetooth connection or wired connection) of the earphone and the electronic equipment is not needed to be disconnected, bluetooth connection or wired connection of the electronic equipment and the earphone box is not needed to be established, and the operation is simpler and more convenient.

Drawings

Fig. 1 is a schematic block diagram of a first embodiment of an earphone box external placement system according to the present utility model;

fig. 2 is a schematic block diagram of a second embodiment of the earphone box external placement system according to the present utility model;

fig. 3 is a schematic block diagram of a third embodiment of the earphone box external placement system according to the present utility model;

fig. 4 is a schematic block diagram of a fourth embodiment of the earphone box external placement system according to the present utility model;

fig. 5 is a schematic block diagram of a fifth embodiment of the earphone box external placement system according to the present utility model;

fig. 6 is a schematic block diagram of a sixth embodiment of an earphone case dispensing system according to the present utility model;

fig. 7 is a schematic block diagram of a seventh embodiment of an earphone case dispensing system according to the present utility model.

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 all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

It will also be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Furthermore, the description of "first," "second," etc. in this disclosure 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, 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 box playing system.

Referring to fig. 1, in the present embodiment, the earphone box exterior system includes a control unit 10, an exterior unit 20, and at least one electromagnetic induction unit 30, and the control unit 10 is electrically connected between the electromagnetic induction unit 30 and the exterior unit 20.

Each electromagnetic induction unit 30 is used for respectively inducing the magnetic field change generated by the corresponding earphone (namely, the magnetic field change generated by the loudspeaker in the earphone) so as to generate corresponding induction current; that is, the electromagnetic induction units 30 are in one-to-one correspondence with the headphones, when the headphones receive the audio signal for playing, the speakers inside the headphones generate a changing magnetic field, and at this time, the electromagnetic induction units 30 induce the magnetic field changes generated by the speakers of the corresponding headphones, so as to generate corresponding induction currents, and thus, current signals synchronous with the audio signal changes of the headphones are obtained.

The control unit 10 controls the on/off state between the electromagnetic induction unit 30 and the external unit 20 to control whether the induction current generated by the electromagnetic induction unit 30 is output to the external unit 20, i.e. the control unit 10 controls the output on and the output off of the induction current generated by the electromagnetic induction unit 30; the external amplifying unit 20 is configured to perform external amplification according to the received current signal. When the control unit 10 controls the induction current generated by the electromagnetic induction unit 30 to be output to the external unit 20, the external unit 20 generates corresponding external sound according to the received induction current; when the control unit 10 controls the output of the induced current generated by the electromagnetic induction unit 30 to be turned off (i.e., when the induced current is not output to the external amplification unit 20), the external amplification unit 20 does not receive the current signal input, and the external amplification unit 20 does not emit sound; accordingly, the control unit 10 controls the opening and closing of the play function of the earphone box play system.

In some embodiments, after receiving the induced current, the external amplifying unit 20 may amplify the induced current first and then perform external amplification according to the amplified current signal, or amplify the induced current through the control unit 10 and then output the amplified induced current to the external amplifying unit 20, so as to improve the sound quality effect of the external amplified sound.

The earphone assembly (including earphone box and earphone) of the earphone box external placement system of this embodiment is adopted, and the theory of operation that realizes earphone box external placement function is: the control unit 10, the external unit 20 and the electromagnetic induction unit 30 are arranged on the earphone box, when a Bluetooth earphone connected with a Bluetooth of a mobile phone (such as a tablet personal computer, a smart watch and other electronic equipment) or a wired earphone connected with the mobile phone is put into the earphone box, the earphone generates a changed magnetic field in the process of playing sound, the electromagnetic induction unit 30 senses the changed magnetic field generated by the loudspeaker of the corresponding earphone and generates a corresponding induction current output, the control unit 10 controls the electromagnetic induction unit 30 to be conducted with the external unit 20, the induction current generated by the electromagnetic induction unit 30 is output to the external unit 20, and the external unit 20 performs external output according to the received induction current signal, namely the earphone box is used for externally outputting the audio signal in the earphone.

The scheme for implementing whether the control unit 10 controls the induction current generated by the electromagnetic induction unit 30 to be output to the external unit 20 (i.e. controls whether the electromagnetic induction unit 30 is conducted with the external unit 20) may be as follows: 1. the control unit 10 comprises a physical switch (such as a toggle switch, a button switch, etc.), and the physical switch directly controls the on-off of the electrical connection between the electromagnetic induction unit 30 and the external unit 20; 2. the control unit 10 includes an automatic change-over switch (e.g., a hall switch) for switching on and off states by sensing whether the earphone is put into the earphone box, the automatic change-over switch being switched on when the earphone is put into the earphone box, so that the electrical connection between the electromagnetic induction unit 30 and the external unit 20 is turned on, and the automatic change-over switch being switched off when the earphone is taken out of the earphone box, so that the electrical connection between the electromagnetic induction unit 30 and the external unit 20 is disconnected; 3. the control unit 10 comprises an infrared remote control switch device, the remote control switch device controls the on-off of the electric connection of the electromagnetic induction unit 30 and the external unit 20, and a user can control the remote control switch device through a remote controller to realize the on-off switching control of the electric connection of the electromagnetic induction unit 30 and the external unit 20; of course, other implementations of the control unit 10 are also possible.

According to the technical scheme of the earphone box external amplifying system, the electromagnetic induction unit 30 is used for inducing the change of the magnetic field of the earphone horn so as to induce corresponding induction current, namely, a current signal synchronous with the change of the audio signal of the earphone is obtained, then the induction current is controlled to be output to the external amplifying unit 20, and the external amplifying unit 20 amplifies the received induction current and then performs external amplifying output, so that the external amplifying function of the earphone box is realized. When the earphone assembly of the earphone box external placement system is needed to be switched to external placement by using the earphone box, the earphone is placed in the earphone box, the electromagnetic induction unit 30 is electrically connected and conducted with the external placement unit 20 through the control unit 10, connection (Bluetooth connection or wired connection) of the earphone and the electronic equipment is not needed to be disconnected, bluetooth connection or wired connection of the electronic equipment and the earphone box is not needed, and the operation is simpler and more convenient. In addition, the earphone box does not need to be provided with a Bluetooth module, so that the cost of the earphone box is reduced.

In some embodiments, the external amplifying unit 20 includes a pre-amplifying subunit 21, a power amplifying subunit 22, and an external amplifying horn 23, where an input end of the pre-amplifying subunit 21 is electrically connected to the control unit 10, and an output end of the pre-amplifying subunit 21 is electrically connected to the external amplifying horn 23 via the power amplifying subunit 22. The control unit 10 controls the induction current induced by the electromagnetic induction unit 30 to be output to the input end of the pre-amplification subunit 21, and after the pre-amplification subunit 21 receives the induction current, the induction current signal is primarily amplified to an acceptable input range and output to the power amplification subunit 22, and the power amplification subunit 22 amplifies the current signal to drive the external amplification loudspeaker 23 to generate external amplification sound. The external amplification unit 20 improves the quality of the external amplified sound through the amplification process of the pre-amplification subunit 21 and the power amplification subunit 22.

Referring to fig. 2, in the present embodiment, the control unit 10 includes an MCU11, a switch subunit 12, and a trigger subunit 13, the electromagnetic induction unit 30 is electrically connected to the external unit 20 via the switch subunit 12, and the ecu 11 is electrically connected to the switch subunit 12 and the trigger subunit 13. The trigger subunit 13 is configured to generate an on signal and an off signal, and the MCU11 controls the switch subunit 12 to switch states according to the on signal or the off signal generated by the trigger subunit 13. The control of the MCU11 may include: 1. the MCU11 receives and processes the conduction signal generated by the trigger subunit 13, and controls the switch subunit 12 to be switched into a conduction state so as to conduct the electromagnetic induction unit 30 and the external amplifying unit 20; 2. the MCU11 receives and processes the off signal generated by the trigger subunit 13, and controls the switch subunit 12 to switch to the off state, so as to disconnect the electromagnetic induction unit 30 from the external amplifying unit 20. The MCU11 may switch the switch subunit 12 by sending a control signal (e.g., a level signal) to the switch subunit 12. In this embodiment, the MCU11 may control the switch subunit 12 to switch between on and off states, may control the switch subunit 12 to switch between three states (for example, a first on state, a second on state, and an off state), and may control the switch subunit 12 to switch between more states. The switch subunit 12 may be a discrete component switch circuit formed by MOS transistors or other switching transistors and resistors, or may be a switch chip.

Referring to fig. 3, in some embodiments, trigger subunit 13 includes an input subunit 131 and a detection subunit 132, and mcu11 is electrically connected to input subunit 131 and detection subunit 132, respectively, and mcu11 controls switch subunit 12 to switch states according to an on signal or an off signal generated by trigger subunit 13; the input subunit 131 may be configured to generate a corresponding signal according to a user input operation and output the signal to the MCU11, the detection subunit 132 may be configured to output a corresponding signal to the MCU11 according to an open/close state of the earphone box, and the MCU11 may control the switch subunit 12 to switch a corresponding state according to the signal output by the input subunit 131 and the signal output by the detection subunit 132.

Alternatively, the input subunit 131 may generate a first on signal or a first off signal according to different input operations of the user, and the detection subunit 132 may output a second on signal when detecting that the earphone box is in an open box state (i.e., the box cover is open), and output a second off signal when detecting that the earphone box is in a closed state (i.e., the box cover is closed). The on signal output by the trigger subunit 13 received by the MCU11 may be a first on signal and a second on signal, and the MCU11 sends a first switching signal to the switch subunit 12 when receiving the first on signal and the second on signal, so as to control the electromagnetic induction unit 30 to be conducted with the external amplifying unit 20, i.e. the earphone box enters an external amplifying mode; the disconnection signals output by the trigger subunit 13 and received by the MCU11 include 3 types of signals, which are respectively: 1. a first off signal and a second on signal, 2, a first off signal and a second on signal, 3, a first off signal and a second off signal; the MCU11 sends a second switching signal to the switch subunit 12 when receiving any of the above-mentioned off signals, so as to control the electromagnetic induction unit 30 to be disconnected from the external play unit 20, i.e. the earphone box exits the external play mode.

Alternatively, the input subunit 131 may include a switch button, where when the user presses the switch button once, the input subunit 131 generates a signal (e.g., a first on signal) to output to the MCU11, and when the user presses the switch button again or presses the switch button twice, the input subunit 131 generates another signal (e.g., a first off signal) to output to the MCU11; alternatively, the input subunit 131 may include a plurality of status keys (including an on key and an off key, or including a first on key, a second on key, and an off key, for example), and when the user presses the first status key (such as the on key or the off key), the input subunit 131 generates a key signal (a first on signal or a first off signal) corresponding to the first status key and outputs the key signal to the MCU11. The keys of the input subunit 131 may be disposed on the earphone box for the user to press, and the keys may be mechanical keys or touch keys. Alternatively, the detecting subunit 132 may be a hall switch for detecting the opening and closing of the earphone box cover, and of course, may also be other devices or circuit modules that can detect the opening and closing of the earphone box cover.

In some embodiments, the earphone box may be an earphone box capable of charging the earphone, and the manner in which the MCU11 detects whether the earphone is placed in the earphone box may be to detect whether the earphone is placed in a charging bin of the earphone box; the earphone box can be additionally provided with an external accommodating bin, when the earphone box needs to be externally placed, the earphone is placed in the additionally provided external accommodating bin, and the MCU11 can be used for detecting whether the earphone is placed in the earphone box or not and detecting whether the earphone is placed in the accommodating cavity of the earphone box or not. In some embodiments, the earphone box may also be an earphone box only for putting out, and an external accommodating cabin for accommodating the earphone is arranged in the earphone box, and the MCU11 detects whether the earphone is put into the earphone box or not and may detect whether the earphone is put into the external accommodating cabin or not.

Referring to fig. 4, in the present embodiment, the control unit 10 further includes at least one trigger switch 14, the trigger switches 14 are in one-to-one correspondence with the electromagnetic induction units 30, the electromagnetic induction units 30 are electrically connected to the switch sub-units 12 via their corresponding trigger switches 14, and the trigger switches 14 are turned on when sensing that the corresponding earphone is put in, and turned off when sensing that the corresponding earphone is taken out. Wherein the trigger switch 14 may be a hall switch.

In this embodiment, the electromagnetic induction unit 30 is electrically connected to the switch subunit 12 through the trigger switch 14, and the trigger switch 14 is turned on when sensing that the corresponding earphone is put into the earphone box, that is, when the precondition of putting the earphone box is provided with (i.e. has a signal source), the corresponding electromagnetic induction unit 30 is started to work, so as to induce the change of the magnetic field and generate corresponding induction current; when the trigger switch 14 senses that the corresponding earphone is taken out of the earphone box, the corresponding electromagnetic induction unit 30 stops working. Thus, the accurate control of the outward playing function of the earphone box is effectively ensured, and the situation that noise is outward played by the outward playing unit 20 of the earphone box due to noise induced current generated by the electromagnetic induction unit 30 caused by magnetic field noise in the environment when the earphone box is not used by a user is avoided.

Referring to fig. 5, in some embodiments, the control unit 10 further includes a timing subunit 15, and the timing subunit 15 is electrically connected between the trigger switch 14 and the MCU11. The timing subunit 15 is configured to detect a duration of time that the earphone is not placed in the earphone box, where the timing subunit 15 may output a corresponding signal to the MCU11 when the earphone is not detected to be placed in the earphone box within a preset time (i.e., when the trigger switch 14 does not sense a signal of the earphone within the preset time), and the MCU11 sends a second switching signal to the switch subunit 12 according to a signal fed back by the timing subunit 15, so that the electromagnetic induction unit 30 is controlled to be disconnected from the external unit 20, i.e., the earphone box is caused to exit the external mode.

In some embodiments, the MCU11 may further control the switch subunit 12 to switch to a corresponding state according to a detected on signal or an off signal generated by whether the earphone box is put into the earphone box and the trigger subunit 13; for example, when it is detected that the earphone is put into the earphone box and the on signal generated by the trigger subunit 13 is received, the switch subunit 12 is controlled to switch to the first on state, so that the electromagnetic induction unit 30 is electrically connected and conducted with the external unit 20, and the earphone box is switched to the external mode; when the earphone is detected to be put into the earphone box and the off signal generated by the trigger subunit 13 is received, the control switch subunit 12 is switched to the second conducting state, so that the earphone box is switched to other working modes (for example, an earphone charging mode); when it is detected that the earphone is not put into the earphone box, the control switch subunit 12 is switched to the off state, so that the earphone box turns off the respective functional modes.

Referring to fig. 6, in the present embodiment, the earphone box external system further includes a charging unit 40 for charging the earphone, the charging unit 40 is electrically connected to the switch subunit 12, and the MCU11 controls the switch subunit 12 to switch states so that the charging unit 40 is turned on/off.

Alternatively, the switch subunit 12 may include a first conductive state and a second conductive state, between which the switch subunit 12 switches; when the switch subunit 12 is in the first conducting state, the electromagnetic induction unit 30 is electrically connected and conducted with the external discharging unit 20, the charging unit 40 is closed, and the earphone box performs an external discharging function mode; when the switch subunit 12 is in the second conducting state, the electromagnetic induction unit 30 is disconnected from the external discharging unit 20, the charging unit 40 is started, and the earphone box performs an earphone charging mode. Of course, the switch subunit 12 may further include an off state on the basis of the first on state and the second on state, the switch subunit 12 switches between three states, and when the switch subunit 12 is in the off state, the electromagnetic induction unit 30 is electrically disconnected from the external unit 20, the charging unit 40 is turned off, and the earphone box is turned off in each functional mode.

Alternatively, the switch subunit 12 may include an on state and an off state, the switch subunit 12 being switched between the on state and the off state; when the switch subunit 12 is in a conducting state, the electromagnetic induction unit 30 is electrically connected and conducted with the external discharging unit 20, the charging unit 40 is started, and the earphone box simultaneously performs an external discharging function mode and an earphone charging mode; when the switch subunit 12 is in the off state, the electromagnetic induction unit 30 is electrically disconnected from the external unit 20, the charging unit 40 is turned off, and the earphone box is turned off in each functional mode.

In some embodiments, the earphone box external placement system further includes a power supply unit 50 for supplying power, and the power supply unit 50 is electrically connected to the control unit 10 and the external placement unit 20. The power supply unit 50 may include an electric storage device capable of charge and discharge, and the power supply unit 50 may also include a dry battery, or the like. Of course, in some embodiments, the earphone box pay-out system may also employ a wired power supply.

Referring to fig. 7, in the present embodiment, the earphone box external system further includes at least one conductive unit 60 for transmitting a magnetic field generated by the earphone, the conductive unit 60 is in one-to-one correspondence with the electromagnetic induction units 30, and the conductive unit 60 is electromagnetically coupled with the electromagnetic induction unit 30 corresponding thereto. Because the earphone has the shell, and the horn inside the earphone is spaced from the shell of the earphone at a certain interval, in actual use, if the electromagnetic induction unit 30 directly senses the magnetic field change in the earphone, the problems of inconvenient induction, lower induction rate and induction interference exist; to the disadvantage, this embodiment is through increasing the conduction unit 60 that is used for transmitting the magnetic field that the earphone produced to make conduction unit 60 and electromagnetic induction unit 30 electromagnetic coupling, transmit the position that electromagnetic induction unit 30 conveniently responded to with the magnetic field that the earphone produced, thereby promote the inductivity of electromagnetic induction unit 30, reduce the induction interference, promote the accuracy of induction signal, and then promote the tone quality that earphone box was put outward. The conductive unit 60 may be disposed on the earphone box, or the conductive unit 60 may be disposed on the corresponding earphone.

In some embodiments, the electromagnetic induction unit 30 is a mutual inductance coil, the conduction unit 60 is a transit coil, and the transit coil is used for being electrically connected with the corresponding earphone, so as to convert the audio signal of the earphone into a corresponding magnetic field, and then the electromagnetic induction unit 30 can generate an audio signal (induction current) synchronous with the audio signal change of the earphone through mutual inductance according to the magnetic field of the transit coil.

In some embodiments, the relay coil may be disposed on the earphone box, for example, disposed inside a box body of the earphone box and coupled to the mutual inductance coil; and set up two input contacts that are connected with the both ends electricity of transfer coil on the earphone box to and set up two output contacts that are connected with the audio signal circuit of earphone on the earphone, when the earphone was put into the earphone box, two output contacts of earphone were corresponding to be connected with two input contacts electricity of earphone box, thereby realized the electric connection of transfer coil and earphone. Of course, in some embodiments, the relay coil may also be provided on the headset.

In some embodiments, the electromagnetic induction unit 30 is a mutual inductance coil, the conduction unit 60 is a magnetic conductive member, one end (denoted as a first end) of the magnetic conductive member is close to the horn of the earphone, and the other end (denoted as a second end) of the magnetic conductive member is close to the mutual inductance coil. In this embodiment, the magnetic field generated by the loudspeaker of the earphone is transferred from the first end of the magnetic conduction piece to the second end of the magnetic conduction piece through the magnetic conduction piece, so that the magnetic field is better sensed by the mutual inductance coil, and then the mutual inductance coil senses to generate more accurate induction current, and the tone quality of the earphone box is improved.

In some embodiments, the magnetic conductive member may be disposed on the earphone, where the first end of the magnetic conductive member is close to the speaker of the earphone, and the second end of the magnetic conductive member may extend out of the earphone or be exposed to the outer surface of the earphone, and when the earphone is placed in the earphone box, the second end of the magnetic conductive member is just close to and electromagnetically coupled with the electromagnetic induction unit 30 of the earphone box.

In some embodiments, the magnetic conductive member may also be disposed on the earphone box, where the second end of the magnetic conductive member is close to the mutual inductance coil and is electromagnetically coupled, and the first end of the magnetic conductive member extends into the accommodating cavity for accommodating the earphone, where an insertion hole into which the first end of the magnetic conductive member is inserted is disposed on the earphone, and in the process of placing the earphone into the accommodating cavity of the earphone box, the first end of the magnetic conductive member extends into the earphone from the insertion hole of the earphone, and when the placement of the earphone is completed, the first end of the magnetic conductive member is close to the horn of the earphone.

Of course, in other embodiments, the conducting unit 60 may be other devices capable of transmitting magnetic fields, and other arrangements of the conducting unit 60 may be used.

The electromagnetic induction unit 30 in the present utility model may be other devices or circuits or modules having the same function as the mutual inductance coil, in addition to the mutual inductance coil.

The earphone box external system of the present utility model, when only comprising one electromagnetic induction unit 30, can be applied to a monaural earphone product, such as a common monaural bluetooth earphone for talking; when the two electromagnetic induction units 30 are included, the electromagnetic induction unit 30 can be applied to left and right double-channel earphone products, one electromagnetic induction unit 30 induces the magnetic field change of the loudspeaker of the left ear earphone, and the other electromagnetic induction unit 30 induces the magnetic field change of the loudspeaker of the right ear earphone; of course, the earphone box discharging system may further include 3 or more electromagnetic induction units 30, which are suitable for more types of earphone products.

The utility model also provides an earphone assembly, which comprises an earphone box and the earphone box external system, wherein the specific structure of the earphone box external system can refer to the embodiment, and as the earphone assembly adopts all the technical schemes of all the embodiments of the earphone box external system, the earphone assembly at least has all the beneficial effects brought by the technical schemes of the embodiments, and the details are not repeated. Wherein, electromagnetic induction unit, put unit and control unit all locate the earphone box outward.

In some embodiments, the earphone assembly further includes at least one earphone, the earphone box is provided with accommodating cavities corresponding to the earphones one by one, the earphones are accommodated in the corresponding accommodating cavities, the electromagnetic induction units are corresponding to the accommodating cavities one by one, and the electromagnetic induction units respectively induce magnetic field changes generated by the earphones in the corresponding accommodating cavities so as to generate induction currents to be output to the external amplifying units, and then audio signals in the earphones are amplified.

The above description of the preferred embodiments of the present utility model should not be taken as limiting the scope of the utility model, but rather should be understood to cover all modifications, variations and adaptations of the present utility model using its general principles and the following detailed description and the accompanying drawings, or the direct/indirect application of the present utility model to other relevant arts and technologies.

Claims (13)

1. A headphone case play-out system, comprising:

each electromagnetic induction unit is used for inducing the magnetic field change generated by the corresponding earphone so as to generate corresponding induction current;

the external amplifying unit is used for carrying out external amplification according to the received current signal; and

and the control unit is electrically connected between the electromagnetic induction unit and the external unit so as to control the connection or disconnection between the electromagnetic induction unit and the external unit.

2. The earphone box discharging system according to claim 1, wherein the control unit comprises an MCU, a switch subunit and a trigger subunit, and the electromagnetic induction unit is electrically connected to the discharging unit via the switch subunit; the MCU is electrically connected with the switch subunit and the trigger subunit, and controls the switching state of the switch subunit according to the on signal or the off signal generated by the trigger subunit so as to control the on or off between the electromagnetic induction unit and the discharging unit.

3. The headphone case play-out system according to claim 2, wherein the trigger subunit includes an input subunit and a detection subunit for outputting a corresponding signal according to an open-close state of the headphone case; the MCU is electrically connected with the input subunit and the detection subunit respectively, and the MCU controls the switch subunit to switch states according to signals output by the input subunit and signals output by the detection subunit.

4. The earphone-case set-out system according to claim 2, wherein the control unit further comprises at least one trigger switch for sensing the earphone, the trigger switch is in one-to-one correspondence with the electromagnetic induction unit, and the electromagnetic induction unit is electrically connected to the switch subunit via the trigger switch corresponding thereto.

5. The earphone-case pay-out system of claim 4, wherein the control unit further comprises a timing subunit electrically connected between the trigger switch and the MCU.

6. The headphone case extension system according to claim 2, further comprising a charging unit for charging headphones, the charging unit being electrically connected to the switch subunit, the MCU controlling the switch subunit to switch states so that the charging unit is turned on/off.

7. The headphone case extension system according to claim 1, further comprising a power supply unit for supplying power, the power supply unit electrically connecting the control unit and the extension unit.

8. The earphone box external amplifying system according to claim 1, wherein the external amplifying unit comprises a pre-amplifying subunit, a power amplifying subunit and an external amplifying horn, the input end of the pre-amplifying subunit is electrically connected with the control unit, and the output end of the pre-amplifying subunit is electrically connected with the external amplifying horn through the power amplifying subunit.

9. The earphone-case set-up system according to any one of claims 1 to 8, further comprising at least one conductive unit for transmitting a magnetic field generated by the earphone, the conductive units being in one-to-one correspondence with the electromagnetic induction units, the conductive units being disposed on the earphone case or the corresponding earphone, the conductive units being electromagnetically coupled with the corresponding electromagnetic induction units.

10. The earphone box pay-out system according to claim 9, wherein the electromagnetic induction unit is a mutual inductance coil, and the conduction unit is a transit coil; the transfer coil is used for being electrically connected with the corresponding earphone, and converting the audio signals of the earphone into corresponding magnetic fields.

11. The earphone box pay-out system according to claim 9, wherein the electromagnetic induction unit is a mutual inductance coil, and the conduction unit is a magnetic conduction member; one end of the magnetic conduction piece is close to a loudspeaker of the earphone, and the other end of the magnetic conduction piece is close to the mutual inductance coil.

12. An earphone assembly comprising an earphone box and the earphone box external placement system of any one of claims 1 to 11, wherein the electromagnetic induction unit, the external placement unit and the control unit are all disposed on the earphone box.

13. The earphone assembly according to claim 12, further comprising at least one earphone, wherein the earphone box is provided with accommodating cavities corresponding to the earphones one by one, the earphones are accommodated in the corresponding accommodating cavities, and the electromagnetic induction units correspond to the accommodating cavities one by one.