Earphone charging box, wireless earphone and earphone kit

Abstract

The invention relates to the technical field of wearable equipment, in particular to an earphone charging box, a wireless earphone and an earphone suite, the earphone charging box comprises an earphone accommodating groove, two movable seats and two standby batteries, and the earphone accommodating groove is used for accommodating the earphone; the movable seats are movably arranged in the earphone charging box, and each movable seat is provided with a limiting cavity; each standby battery is movably arranged in one limiting cavity; in the first state, the movable seat is located at a first position in the earphone charging box, and the limiting cavity and the earphone containing groove are arranged in a staggered mode. And in the second state, the movable seat is located at a second position in the earphone charging box, the standby battery and the earphone accommodating groove are aligned, and the limiting cavity is communicated with the earphone accommodating groove, so that the standby battery can be connected with the earphone. The invention mainly aims to provide an earphone charging box, and aims to solve the problem that the use state of an earphone is interrupted due to use clearance caused by replacement of a battery of the earphone.

Description

Technical Field

[0001] This invention relates to the field of wearable device technology, and in particular to an earphone charging case, wireless earphones, and earphone kit. Background Technology

[0002] True wireless earbuds (TWS earbuds) are earbuds that do not require traditional physical cables. They typically connect to smart devices such as smartphones and tablets via Bluetooth to play sound for the user. These wireless earbuds rely solely on their own built-in battery for power, as the lack of a physical cable prevents them from recharging while in use.

[0003] In related technologies, to prevent wireless earbuds from becoming unusable due to insufficient battery power during extended calls, live broadcasts, or meetings, the charging case is equipped with a backup battery. When the main battery is low, the backup battery replaces it, ensuring the earbuds' continued usability. However, the need to replace the battery still causes interruptions in earbud use, leading to issues such as lost meeting information and missed calls. Summary of the Invention

[0004] The main objective of this invention is to provide an earphone charging case that addresses the issue of interrupted earphone use due to battery replacement requirements.

[0005] To achieve the above objectives, the present invention provides an earphone charging case for powering wireless earphones, the earphone charging case comprising: An earphone receiving slot for receiving earphones; Two movable seats, each movably disposed inside the earphone charging case, each movable seat having a limiting cavity; and, Two backup batteries, each of which is movably disposed within one of the limiting cavities; In the first state, the movable seat is located in the first position in the earphone charging case, and the limiting cavity is misaligned with the earphone receiving slot; in the second state, the movable seat is located in the second position in the earphone charging case, the spare battery is aligned with the earphone receiving slot, and the limiting cavity communicates with the earphone receiving slot so that the spare battery can be connected to the earphone. The earphone charging case can switch back and forth between the first state and the second state.

[0006] In one embodiment of the present invention, the mutually facing sides of the two movable seats are defined as the first electromagnet side, and the first electromagnet side is configured to receive a first electrical signal and a second electrical signal. When the first electromagnet side receives the first electrical signal, the magnetic force between the two first electromagnet sides is an attractive force, so that the movable seat and the backup battery can switch from the second position to the first position. When the first electromagnet receives the second electrical signal, the magnetic force between the two first electromagnets is a repulsive force, so that the movable seat and the backup battery can switch from the first position to the second position.

[0007] In one embodiment of the present invention, the earphone charging case is provided with a Hall sensor, which is configured to sense the composite magnetic field of the two first electromagnets to generate a first positioning signal and a second positioning signal. When the movable seat is in the first position, the first position signal is configured to control the first electromagnet side to de-energize the first electrical signal; When the movable seat is in the second position, the second position signal is configured to control the first electromagnet side to de-energize the second electrical signal.

[0008] In one embodiment of the present invention, the earphone charging case further includes at least two stops, with at least one stop in each second position; when the movable seat is in the second position, the opposite sides of the movable seat can abut against at least one stop.

[0009] In one embodiment of the invention, each of the first positions has at least one of the stops; when the movable seat is in the first position, the mutually facing sides of the movable seats can abut against at least one of the stops.

[0010] In one embodiment of the present invention, the stop member located at the second position is made of a permanent magnet; The two movable seats facing away from each other are defined as the second electromagnet side, which is configured to receive a first fixed signal. When the movable seat is in the second position, the second electromagnet side is energized. In the energized state, the second electromagnet side is configured to receive a position fixing signal, and the second electromagnet side is magnetically fixed to the stop member.

[0011] In one embodiment of the present invention, the earphone charging case further includes a first locking component and a second locking component. The first locking component and the second locking component each include a fixing member and a mating member. The fixing member of the first locking component and the second locking component is disposed on the bottom wall of the movable seat. The mating member of the first locking component is disposed at a first position in the earphone charging case. The mating member of the second locking component is disposed at a second position in the earphone charging case. In the first state, the fixing member of the first locking component is fixedly connected to the mating member of the first locking component; In the first state, the fixing member of the second locking component is fixedly connected to the mating member of the second locking component.

[0012] In one embodiment of the present invention, the movable seat has a first opening facing the bottom wall of the earphone charging case; the earphone charging case has a battery removal window and a shield, the battery removal window is located on the bottom wall of the earphone charging case, and the shield is disposed on the battery removal window; When the movable seat is in the first position in the earphone charging case, the battery removal window is aligned and connected to the first opening.

[0013] The present invention also proposes a wireless earphone, which is applied to an earphone charging case as described in any of the above-mentioned embodiments. The wireless earphone is provided with a main battery and can be electrically connected to a backup battery of the earphone charging case. The wireless earphone has a charging state in which it is connected to the backup battery and the backup battery can charge and recharge the wireless earphone.

[0014] The present invention also proposes an earphone kit, the earphone kit comprising an earphone charging case as described in any one of the above descriptions and wireless earphones as described above.

[0015] In this technical solution, the earphone charging case provided by the present invention solves the problem of earphone interruption caused by insufficient battery power during use, which can be removed along with the earphones. Specifically, the earphone charging case has a first state and a second state. In the first state, the movable seat is located in the first position of the earphone charging case, and the limiting cavity is misaligned with the earphone receiving slot. In the second state, the movable seat is located in the second position of the earphone charging case, the spare battery is aligned with the earphone receiving slot, and the limiting cavity is connected to the earphone receiving slot so that the spare battery can be connected to the earphones. The user can actively switch the earphone charging case between the first and second states according to usage needs. For example, when the user only needs the earphones, the earphone charging case can be controlled in the first state. At this time, the limiting cavity is misaligned with the earphone receiving slot, and the earphones are not connected to the spare battery, thereby achieving the purpose of removing only the earphones without removing the spare battery. When the user needs to remove the earphones and the spare battery at the same time, the earphone charging case can be controlled to enter the second state. At this time, the limiting cavity is aligned with the earphone receiving slot, and the spare battery can be connected to the earphones by magnetic attraction, thereby achieving the purpose of removing the earphones and the spare battery at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of an embodiment of the earphone charging case provided by the present invention; Figure 2 for Figure 1 A sectional view; Figure 3 A schematic diagram illustrating the engagement of an embodiment of the earphone charging case provided by the present invention in a first state; Figure 4 A schematic diagram illustrating the engagement of another embodiment of the earphone charging case provided by the present invention in a first state; Figure 5 A schematic diagram illustrating the engagement of an embodiment of the earphone charging case provided by the present invention in a second state; Figure 6 A schematic diagram of the structure of an embodiment of the backup battery provided by the present invention; Figure 7 This is a schematic diagram of the structure of an embodiment of the wireless earphone provided by the present invention.

[0018] Explanation of icon numbers: 100. Earphone charging case; 10. Interactive module; 11. Earphone receiving slot; 12. Movable base; 121. First electromagnet side; 122. Second electromagnet side; 13. Backup battery; 131. First magnetic attraction structure; 132. First charging contact; 14. Stop components; 200. Wireless earphones; 20. Second magnetic structure; 21. Second charging contact; 1000, Headphone Kit.

[0019] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0022] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0023] In the existing technology, in order to ensure that the wireless headset 200 does not run out of power in long-term use scenarios, the main battery of the wireless headset 200 is usually designed to be removable. When the main battery is low on power, the user needs to replace the main battery with the spare battery 13 to continue using the wireless headset 200. However, because the battery needs to be replaced, there will be interruptions in the use of the headset during each use. In some urgent meetings or when the content of the call is important, the need to replace the battery will prevent the user from continuing to use the headset to listen to the relevant content, resulting in missed content. At the same time, the need to replace the battery will inevitably distract the user, resulting in incomplete content recording.

[0024] To achieve the above objectives, please refer to Figure 1 , Figure 2 as well as Figure 3 The present invention proposes an earphone charging case 100 for powering wireless earphones 200. The earphone charging case 100 includes: Earphone charging slot, used to hold earphones; Two movable seats 12 are movably disposed inside the earphone charging case 100, each movable seat 12 having a limiting cavity; and, Two backup batteries 13, each backup battery 13 being movably disposed in a limiting cavity; In the first state, the movable seat 12 is located in the first position in the earphone charging case 100, and the limiting cavity is misaligned with the earphone charging slot; in the second state, the movable seat 12 is located in the second position in the earphone charging case 100, the spare battery 13 is aligned with the earphone charging slot, and the limiting cavity is connected to the earphone charging slot so that the spare battery 13 can be connected to the earphone. The earphone charging case 100 can switch between a first state and a second state.

[0025] Specifically, the earphone charging case 100 Figure 3 The first direction shown is divided into upper and lower layers. The upper layer of the earphone charging case 100 is mainly the earphone charging compartment, which includes a circuit system, a flip cover, and an earphone receiving slot 11 for accommodating earphones. When the user opens the flip cover, the earphone receiving slot 11 is exposed, allowing the user to take out or put the earphones into the earphone receiving slot 11. The bottom of the earphone receiving slot 11 is also an open end. When the earphones are in the earphone receiving slot 11, the circuit system of the earphone charging case charges the earphones through the battery pipeline circuit module and the battery via PIN point contact, so that the earphones have power for the user's next use. The lower layer of the earphone charging case 100 is mainly a cavity, in which two [unclear text - possibly referring to two sliding / adjustable parts] are provided. Figure 3 The movable seat 12, which moves back and forth in the second direction, can move directionally with the bottom wall of the earphone charging case through a combination of guide rails and grooves. For example, the bottom of the movable seat 12 is provided with a guide rail extending in the second direction, and the bottom wall of the earphone charging case is provided with a groove extending in the second direction. The guide rail and the groove are in a limiting fit. When the movable seat 12 is subjected to power, the movable seat 12 can move in the second direction according to the direction of the power. Of course, the guide rail and groove provided between the movable seat 12 and the bottom wall of the earphone charging case can be interchanged, which is not limited here. The first direction is the height direction when the earphone charging case 100 is placed vertically, and the second direction is the length direction of the earphone charging case 100.

[0026] Each movable seat 12 is provided with a limiting cavity for accommodating a spare battery 13. The end of the limiting cavity near the earphone receiving slot 11 is open, allowing the spare battery 13 to detach from the limiting cavity. The spare battery 13 is used to charge the earphones during use, preventing power shortages and interruptions in use. The movable seat 12 can move back and forth between a first position and a second position on the bottom wall of the earphone charging case 100. When the earphone charging case 100 is in the first position, the movable seat 12 is in the first position. When the movable seat 12 is in the first position, it is misaligned with the earphone receiving slot 11. Please refer to [link / reference]. Figure 3 The projection of the structure of the movable seat 12 onto the bottom wall of the earphone charging case 100 is completely misaligned with the projection of the structure of the earphone receiving slot 11 onto the bottom wall of the earphone charging case 100. That is, there is no structural overlap between the movable seat 12 and the earphone receiving slot 11 along the first direction. For example, please refer to... Figure 4 The structure of the movable base 12 is projected onto the bottom wall of the earphone charging case 100, offset from the structure of the earphone receiving slot 11. That is, along the first direction, there is a partial overlap between the movable base 12 and the earphone receiving slot 11. This allows the spare battery 13 to be offset from the earphones along the first direction, so that when the user removes the earphones, only the earphones need to be removed. When the earphone charging case 100 is in the second state, the movable base 12 is in the second position. When the movable base 12 is in the second position, it is aligned with the earphone receiving slot 11. Please refer to [link to relevant documentation]. Figure 5 The projection of the structure of the movable base 12 onto the bottom wall of the earphone charging case 100 is completely aligned with the projection of the structure of the earphone receiving slot 11 onto the bottom wall of the earphone charging case 100. That is, along the first direction, the movable base 12 and the earphone receiving slot 11 completely overlap. At this time, the top of the limiting cavity is directly connected to the bottom of the earphone charging slot, and the spare battery 13 in the movable base 12 is directly aligned with the wireless earphone 200 in the earphone receiving slot 11. Please refer to [link / reference]. Figure 6 and Figure 7 The second magnetic structure 20 of the wireless earphone 200 and the first magnetic structure 131 of the backup battery 13 are attracted by opposite poles. Through magnetic attraction, the wireless earphone 200 and the backup battery 13 are fixedly connected. At this time, when the user takes out the earphone, the earphone and the backup battery 13 can be taken out at the same time. At the same time, the second charging contact 21 of the wireless earphone 200 and the first charging contact 132 of the backup battery 13 make contact to achieve electrical conduction, thereby avoiding the problem of interruption of use of the wireless earphone 200 in subsequent use.

[0027] Understandably, in Figures 3 to 5In the middle, there is a gap between the earphone receiving slot 11 and the movable seat 12 along the first direction. This is to clearly and independently show the earphone receiving slot 11 and the movable seat 12. In fact, there is no gap between the earphone receiving slot 11 and the movable seat 12 in the first direction, which helps to reduce the height of the earphone charging case 100.

[0028] The first or second state can be customized as the normal usage state of the earphone charging case 100 according to the user's need for the spare battery 13. For example, if the user often has concerns about the earphone battery not being enough to support the next use, the second state can be the normal usage state of the earphone charging case 100, that is, the spare battery 13 can be taken out at the same time when the user takes out the earphone. If the user only has concerns about the earphone battery not being enough to support the next use under specific needs, the first state can be the normal usage state of the earphone charging case 100, that is, the spare battery 13 will not be taken out at the same time when the user takes out the earphone.

[0029] The earphone charging case 100 can switch back and forth between a first state and a second state. This can be achieved by the user pressing the corresponding button on the interaction module 10, or by sending corresponding operation commands through a smart device that has established a communication relationship with the earphone charging case 100. No limitation is made here.

[0030] In this technical solution, the headphone charging case 100 provided by the present invention solves the problem of insufficient headphone battery power leading to interrupted use when the headphone is in use, by using a spare battery 13 that can be removed along with the headphone. Specifically, the headphone charging case 100 has a first state and a second state. In the first state, the movable base 12 is located in a first position in the headphone charging case 100, and the limiting cavity is misaligned with the headphone receiving slot 11. In the second state, the movable base 12 is located in a second position in the headphone charging case 100, the spare battery 13 is aligned with the headphone receiving slot 11, and the limiting cavity communicates with the headphone receiving slot 11, so that the spare battery 13 can be removed along with the headphone. Connect the earphones; the user can actively switch the earphone charging case 100 between the first and second states according to their needs. For example, when the user only needs the earphones, the earphone charging case 100 can be controlled to the first state. At this time, the limiting cavity and the earphone receiving slot 11 are misaligned, and the earphones are not connected to the spare battery 13, thus achieving the purpose of taking out only the earphones without taking out the spare battery 13. When the user needs to take out the earphones and the spare battery 13 at the same time, the earphone charging case 100 can be controlled to enter the second state. At this time, the limiting cavity is aligned with the earphone receiving slot 11, and the spare battery 13 can be connected to the earphones by magnetic attraction, thus achieving the purpose of taking out the earphones and the spare battery 13 at the same time.

[0031] Specifically, please refer to Figure 3 , Figure 4 as well as Figure 5 The sides of the two movable seats 12 facing each other are defined as the first electromagnet side 121, and the first electromagnet side 121 is configured to receive a first electrical signal and a second electrical signal. When the first electromagnet side 121 receives the first electrical signal, the magnetic force between the two first electromagnet sides 121 becomes an attractive force, so that the movable seat 12 and the backup battery 13 can switch from the second position to the first position. When the first electromagnet side 121 receives the second electrical signal, the magnetic force between the two first electromagnet sides 121 is a repulsive force, so that the movable seat 12 and the backup battery 13 can switch from the first position to the second position.

[0032] In this embodiment, the first electromagnet side 121 is realized by relying on the controllable energization characteristic of the electromagnet. The direction of the magnetic field is changed by adjusting the polarity of the input current, thereby precisely controlling the interaction force between the two movable seats 12.

[0033] Specifically, the first electromagnet side 121 is essentially an electromagnetic coil embedded on the opposite side of the two movable seats 12. When the control board of the earphone charging case 100 receives an instruction from the interactive module 10 or a smart device, it will drive the circuit system to apply current in different directions to these coils: if the first electrical signal (such as a positive current) is applied, the magnetic fields excited by the two electromagnet sides are opposite in polarity. According to the principle that opposite magnetic poles attract each other, an attractive force is generated, causing the movable seat 12 to slide from the second position to the first position along the preset guide rail, thus resetting the state; if the second electrical signal (such as a reverse current) is applied, the magnetic fields of the two electromagnet sides are the same in polarity. According to the principle that like poles repel each other, a repulsive force is formed, pushing the movable seat 12 from the first position to the second position, thus completing the alignment preparation between the backup battery 13 and the earphone.

[0034] The energization of the first electromagnet side 121 is controlled by the control motherboard of the earphone charging case 100. The triggering of the first electrical signal is designed to be passive, aiming to automatically return the movable seat 12 and the spare battery 13 to the first position after the user puts the earphones and spare battery 13 back into the charging case, without additional operation. In one embodiment, when the earphones are placed into the earphone receiving slot 11 and the spare battery 13 slides into the limiting cavity, the position sensor installed inside the earphone charging case 100 will detect that both are in place and then send a trigger signal to the control motherboard; in another embodiment, when the electrode of the spare battery 13 contacts the charging contact in the movable seat 12 and establishes a charging circuit, the circuit system will detect a characteristic current or voltage change, which is recognized by the control motherboard as a sign that the device has been put back. Regardless of the triggering method of the embodiment, after confirming that the conditions are met, the control motherboard will automatically apply the first electrical signal to the electromagnet coils of the two first electromagnet sides 121, so that the two electromagnets generate an attractive magnetic field, thereby driving the movable seat 12 to move smoothly from the second position and lock to the first position.

[0035] Conversely, the triggering of the second electrical signal is designed to be proactive, activated entirely based on the user's immediate needs. It is generated in two ways: first, the user directly presses a physical control button on the earphone charging case 100, which sends a clear switching command to the control board; second, the user sends a control command via an application on a smart device. This command is received by the earphone charging case 100's communication module and transmitted to the control board. Upon receiving the command, the control board applies the second electrical signal to the first electromagnet side 121, causing the electromagnet to generate a repulsive magnetic field, thereby pushing the movable seat 12 from the first position to the second position, completing the docking preparation between the backup battery 13 and the earphone.

[0036] In one application scenario, when both movable seats 12 are in the first position, and the user anticipates a long usage period for the wireless earphone 200 and is concerned that its battery life may be insufficient, the user can press a button on the interaction module 10 or use a smart device to issue a corresponding operation, inputting a second electrical signal to the two first electromagnet sides 121. At this time, the two movable seats 12 experience a repulsive force, moving to the second position to fix the wireless earphone 200 and the backup battery 13 in place, thereby allowing the earphone and backup battery to be removed simultaneously. Battery 13; When the user places the wireless earphone 200 and the spare battery 13 into their respective positions, the position detection unit (such as an infrared sensor or a contact sensor) or circuit status detection unit inside the earphone charging case 100 will recognize that the devices are in place and automatically send a signal back to the control motherboard. The control motherboard will then passively trigger and generate a first electrical signal, driving the electromagnets 121 on the first electromagnet side of the two movable seats 12 to generate an attractive magnetic force, causing the movable seats 12 to smoothly return from the second position to the first position, completing the automatic reset. At this time, the movable seats 12 are locked in the first position, and the spare battery 13 and the earphone receiving slot 11 return to their misaligned state, ready for the next use. The entire process requires no user intervention, achieving "reset upon placement" management, significantly improving the continuity and convenience of using the spare battery 13.

[0037] In one embodiment of the present invention, the earphone charging case 100 is provided with a Hall sensor, which is configured to sense the composite magnetic field of the two first electromagnet sides 121 to generate a first positioning signal and a second positioning signal. When the movable seat 12 is in the first position, the first position signal is configured as a first electrical signal to control the first electromagnet side 121 to de-energize. When the movable seat 12 is in the second position, the second position signal is configured as a second electrical signal to control the first electromagnet side 121 to de-energize.

[0038] In this embodiment, since both first electromagnet sides 121 generate magnetic fields when energized, and their relative distance changes as the movable seat 12 moves, the composite magnetic field strength sensed by the Hall sensor exhibits a continuous change related to the position. The control board pre-calibrates specific magnetic field thresholds corresponding to the first and second positions. When the movable seat 12 moves towards the first position, the composite magnetic field strength gradually increases (or decreases, depending on the polarity configuration). Once the first threshold is reached, the Hall sensor immediately outputs a first positioning signal to the control board. The control board then cuts off the output of the first electrical signal based on the first positioning signal, causing the first electromagnet side 121 to be de-energized and demagnetized, and the movable seat 12 stops at the first position. Similarly, during the process of the movable seat 12 moving towards the second position, the change in magnetic field strength touches the second threshold, the Hall sensor generates a second positioning signal, triggering the control board to disconnect the second electrical signal. After the electromagnetic force disappears, the movable seat 12 stably stops at the second position. In this way, by identifying the position of the movable seat 12 through the Hall sensor, not only is the risk of wear and false triggering of traditional mechanical limit switches avoided, but more importantly, by identifying that the movable seat 12 has reached the first or second position, the control board immediately disconnects the power supply to the electromagnet in the first electromagnet side 121, completely eliminating the no-load energy consumption caused by the continuous power supply of the electromagnetic coil after the movable seat 12 has come to rest. This allows the power to be concentrated on the necessary charging and standby functions, effectively optimizing the total power distribution of the charging box system and extending the overall battery life.

[0039] In one embodiment of the present invention, please refer to Figure 3 , Figure 4 as well as Figure 5 The earphone charging case 100 also includes at least two stops 14, with at least one stop 14 in each second position; when the movable seat 12 is in the second position, the opposite sides of the movable seat 12 can abut against at least one stop 14.

[0040] In this embodiment, the stop 14, acting as a limit element for the movement of the movable seat 12, is fixed in a predetermined area within the earphone charging case 100 corresponding to the second position. Its design aims to provide precise end-point blocking for the movement of the movable seat 12. The stop 14 can be made of rigid materials such as high-hardness engineering plastics or lightweight metal alloys, and its shape can be designed as a columnar, blocky, or sheet-like structure. It is firmly integrated into the bottom wall of the charging case to ensure contact with the opposing sides of the two movable seats 12. When each movable seat 12 is driven by electromagnetic force to move towards the second position, the opposing sides of the movable seats 12 will eventually contact the contact surface of the corresponding stop 14, physically blocking the movement through rigid impact or elastic contact, thereby accurately defining the final stopping position of the movable seat 12. Furthermore, the contact surface of the stop 14 can be covered with a buffer layer such as rubber or polyurethane coating to absorb impact energy, reduce noise, and reduce wear during long-term use. Thus, the stop 14 provides an absolute position reference for the movable seat 12 in the second position through mechanical limiting, effectively preventing positioning deviations caused by inertia or external disturbances, ensuring the complete alignment of the spare battery 13 and the headphone receiving slot 11, thereby ensuring the reliability of the connection (such as magnetic attraction and electrical contact) between the headphone and the spare battery 13; at the same time, as a passive safety structure, the stop 14 can still maintain the stable stopping of the movable seat 12 after the electromagnetic drive system is powered off, reducing the dependence on the electronic locking system and improving the system's anti-interference ability and fault tolerance.

[0041] In one embodiment of the present invention, please refer to Figure 3 and Figure 4 Each first position has at least one stop 14; when the movable seat 12 is in the first position, the mutually facing sides of the movable seat 12 can abut against at least one stop 14.

[0042] In this embodiment, the stop 14 is further disposed in a predetermined area corresponding to the first position, which serves to limit the movement of the movable seat 12 when it is in the first position. Specifically, please refer to... Figure 3 A common stop 14 can be provided in the central area between the two first positions. When the two movable seats 12 are attracted and move towards the first position, the facing sides of the two movable seats 12 will simultaneously abut against the two sides of the stop 14, thereby stopping the movement of the two movable seats 12 in the first position. Please refer to Figure 4 Alternatively, an independent stop 14 can be set at the first position corresponding to each movable seat 12. When each movable seat 12 moves into place, the sides of the two movable seats 12 facing each other will abut against a stop 14, thereby stopping the movement of the two movable seats 12 at the first position.

[0043] Thus, the stop 14 provides the same mechanical positioning accuracy for the movable seat 12 in the first position as it is in the second position, ensuring the misalignment of the spare battery 13 and the earphone receiving slot 11, and guaranteeing the purpose of removing only the earphones. Simultaneously, by linking with the Hall sensor signal, the holding current of the first electromagnet side 121 can be immediately cut off after the movable seat 12 abuts against the stop 14 and triggers the positioning signal, achieving "power off upon positioning," further saving energy. Finally, these stop 14s can still effectively limit any slight movement of the movable seat 12 after the earphone charging case 100 is powered off. Together with the stop 14 in the second position, they constitute a complete, energy-independent mechanical positioning and safety holding system, significantly improving the structural reliability and stability of the entire charging case under conditions such as transportation, carrying, or accidental drops.

[0044] In one embodiment of the present invention, the stop member 14 located at the second position is made of a permanent magnet; The two movable seats 12 are defined as the opposite sides of each other as the second electromagnet side 122, which is configured to receive the first fixed signal. When the movable seat 12 is in the second position, the second electromagnet side 122 is energized. In the energized state, the second electromagnet side 122 is configured to receive the position fixing signal, and the second electromagnet side 122 is magnetically fixed to the stop member 14.

[0045] Understandably, when the movable seat 12 moves under electromagnetic force and impacts the stop 14 in the second position, its own kinetic energy may cause a momentary rebound or slight displacement. If this uncertainty occurs during the brief interval when the user removes the earphone, it may cause misalignment between the aligned spare battery 13 and the earphone, affecting the reliability of their connection.

[0046] Based on this, when the movable seat 12 moves to the second position and is confirmed to be in place by a Hall sensor or other detection unit, the control board of the earphone charging case 100 immediately executes a predetermined control program. The control program first controls the second electromagnet side 122 to enter the energized state, and then applies a brief position fixing signal to it (e.g., a pulse current lasting 0.5 to 1 second). Under the action of this signal, the second electromagnet side 122 instantaneously generates a magnetic field with the opposite polarity to the permanent magnet stop 14, and a magnetic attraction is formed between the second electromagnet side 122 and the stop 14, so that the movable seat 12 is firmly attracted and fixed to the stop 14. Through the above, the rebound or shaking caused by mechanical collision can be effectively eliminated, ensuring that the alignment state of the spare battery 13 and the earphone receiving slot 11 is rigidly maintained.

[0047] The position-fixing signal is set to an extremely short duration, meaning the earphone charging case 100 enters a specific energized state. The duration of the position-fixing signal only needs to cover the time from when the user observes the earphones to when they perform the removal action. Once this short signal ends, the second electromagnet side 122 is immediately de-energized, and the magnetic attraction is released. At this time, the movable seat 12 and the permanent magnet stop 14 maintain contact only through the weak residual magnetism of the permanent magnet and the friction of the mechanical contact surface, while the main, energy-consuming active magnetic attraction force has been removed. Through this "instantaneous locking and immediate power-off" mode, the locking function achieves its core purpose—ensuring positional stability at the moment of removal—while its power consumption of the earphone charging case 100 is reduced to a very low level, thus achieving the overall design goal of saving the total power of the charging case.

[0048] In this technical solution, without significantly increasing power consumption, the movable seat 12 is provided with transient adsorption force in the second position through electronically controlled magnetic attraction. This avoids the risk of functional failure caused by the positional displacement of the movable seat 12 during the operation time when the user needs to take out the earphones and the spare battery 13, thereby improving the overall reliability and user experience of the earphone charging case 100.

[0049] In one embodiment of the present invention, the earphone charging case 100 further includes a first locking component and a second locking component. Both the first locking component and the second locking component include a fixing member and a mating member. The fixing member of the first locking component and the second locking component is disposed on the bottom wall of the movable seat 12. The mating member of the first locking component is disposed at a first position in the earphone charging case 100. The mating member of the second locking component is disposed at a second position in the earphone charging case 100. In the first state, the fixing member of the first locking component is fixedly connected to the mating member of the first locking component; In the first state, the fixing part of the second locking component is fixedly connected to the mating part of the second locking component.

[0050] In this embodiment, the fixing parts of the first locking component and the second locking component are both permanent magnet coatings on the contact surfaces of the movable seat 12 and the bottom wall of the earphone charging case 100. The mating parts of the first locking component and the second locking component are both permanent magnet coatings on the contact surfaces of the bottom wall of the earphone charging case 100 and the bottom wall of the movable seat 12. The fixing parts and the mating parts have opposite magnetic properties. Specifically, when the movable seat 12 moves to the first position or the second position, the permanent magnet coating on its bottom wall will align with the permanent magnet coating pre-set at the corresponding position on the bottom wall of the earphone charging case 100. Since the permanent magnet coating of the movable seat 12 and the permanent magnet coating on the bottom wall of the earphone charging case 100 have opposite magnetic poles, a stable magnetic attraction force is generated between the movable seat 12 and the earphone charging case 100, thereby firmly fixing the movable seat 12 in the first position or the second position.

[0051] Since the attraction between permanent magnets is an inherent property of the material and can exist continuously without any external power supply, the movable seat 12 can be reliably locked for any length of time in either the first or second state, completely eliminating static energy consumption for maintaining position. Simultaneously, the holding force provided by this magnetic locking is sufficient to overcome vibrations and shaking during daily carrying, ensuring absolute positional stability. In particular, the magnetic fixation of the second locking component ensures that after the user removes the spare battery 13, the unloaded movable seat 12 remains precisely in the second position, keeping the channel of the headphone accommodating slot 11 aligned with the entrance of the limiting cavity. This ensures that the user can subsequently and effortlessly place the spare battery 13 back into the limiting cavity through the headphone accommodating slot 11, improving product reliability and user experience.

[0052] In one embodiment of the present invention, the movable seat 12 is provided with a first opening facing the bottom wall of the earphone charging case 100; the earphone charging case 100 is provided with a battery removal window and a shield, the battery removal window is located on the bottom wall of the earphone charging case 100, and the shield is provided on the battery removal window. When the active seat 12 is in the first position in the earphone charging case 100, the battery removal window is aligned and connected to the first opening.

[0053] In this embodiment, the movable seat 12 is a mid-frame structure, and the limiting cavity completely penetrates the movable seat 12 along the first direction, so that the end of the movable seat 12 facing the earphone receiving slot 11 is an open structure, and the end of the movable seat 12 facing the bottom wall of the earphone charging case 100 is also an open structure (i.e., forming the first opening); at the same time, the earphone charging case 100 is provided with a battery removal window and a shield. The projection of the battery removal window in the first direction is precisely aligned with the first opening at the bottom of the movable seat 12 in the first position. The battery removal window is provided with a shield, which can be a sliding cover, a flip-up door, or a soft silicone plug, etc., to close the battery removal window to prevent dust and debris from entering the charging case and to maintain the integrity of the product's appearance.

[0054] When the movable base 12 is in the first position (i.e., the charging case is in the first state, and the spare battery 13 is misaligned with the earphone), the spare battery 13 is housed in the limiting cavity of the movable base 12. At this time, the battery removal window, the first opening at the bottom of the movable base 12, and the limiting cavity form a continuous channel along the first direction. If the user needs to remove or replace the spare battery 13 separately, he / she only needs to open the cover on the bottom wall to directly access and remove the spare battery 13 located in the limiting cavity through this channel, thereby meeting the user's need to "take out the earphones first for use, and then independently remove the spare battery 13 as needed".

[0055] This invention also proposes a wireless earphone 200, please refer to [link / reference]. Figure 7The bottom of the wireless earphone 200 is provided with a second magnetic structure 20 and a second charging contact 21. The second magnetic structure 20 can be magnetically fixed with the first magnetic structure 131 on the backup battery 13, and the second charging contact 21 can be electrically connected with the first charging contact 132 on the backup battery 13. In this way, the backup battery 13 can be stably attached to the bottom of the wireless earphone 200 to charge and replenish the battery of the wireless earphone 200, thereby extending the battery life of the wireless earphone 200 and avoiding problems such as interruption of earphone use. This solves the problems of lost meeting information and missed calls due to gaps in use, improving user experience and reliability.

[0056] The present invention also proposes an earphone kit 1000, the device kit including an earphone charging case 100 as described above and a wireless earphone 200 as described above. The specific structures of the earphone charging case 100 and the wireless earphone 200 are as described above. Since the earphone kit 1000 proposed in the present invention adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0057] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural transformations made using the contents of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of patent protection of the present invention.

Claims

1. An earphone charging case for powering wireless earphones, characterized in that, The earphone charging case includes: An earphone receiving slot for receiving earphones; Two movable seats, each movably disposed inside the earphone charging case, each movable seat having a limiting cavity; and, Two backup batteries, each of which is movably disposed within one of the limiting cavities; In the first state, the movable seat is located in the first position in the earphone charging case, and the limiting cavity is misaligned with the earphone receiving slot; in the second state, the movable seat is located in the second position in the earphone charging case, the spare battery is aligned with the earphone receiving slot, and the limiting cavity communicates with the earphone receiving slot so that the spare battery can be connected to the earphone. The earphone charging case can switch back and forth between the first state and the second state.

2. The earphone charging case as described in claim 1, characterized in that, The two movable seats facing each other are defined as the first electromagnet side, which is configured to receive a first electrical signal and a second electrical signal. When the first electromagnet side receives the first electrical signal, the magnetic force between the two first electromagnet sides is an attractive force, so that the movable seat and the backup battery can switch from the second position to the first position. When the first electromagnet receives the second electrical signal, the magnetic force between the two first electromagnets is a repulsive force, so that the movable seat and the backup battery can switch from the first position to the second position.

3. The earphone charging case as described in claim 2, characterized in that, The earphone charging case is equipped with a Hall sensor, which is configured to sense the composite magnetic field of the two first electromagnets to generate a first positioning signal and a second positioning signal. When the movable seat is in the first position, the first position signal is configured to control the first electromagnet side to de-energize the first electrical signal; When the movable seat is in the second position, the second position signal is configured to control the first electromagnet side to de-energize the second electrical signal.

4. The earphone charging case as described in any one of claims 1 to 3, characterized in that, The earphone charging case also includes at least two stops, with at least one stop in each of the second positions; when the movable seat is in the second position, the opposite sides of the movable seat can abut against at least one of the stops.

5. The earphone charging case as described in claim 4, characterized in that, Each of the first positions has at least one of the stops; when the movable seats are in the first position, the mutually facing sides of the movable seats can abut against at least one of the stops.

6. The earphone charging case as described in claim 4, characterized in that, The stop member located at the second position is made of a permanent magnet; The two movable seats facing away from each other are defined as the second electromagnet side, which is configured to receive a first fixed signal. When the movable seat is in the second position, the second electromagnet side is energized. In the energized state, the second electromagnet side is configured to receive a position fixing signal, and the second electromagnet side is magnetically fixed to the stop member.

7. The earphone charging case as described in claim 6, characterized in that, The earphone charging case further includes a first locking component and a second locking component. Both the first locking component and the second locking component include a fixing part and a mating part. The fixing part of the first locking component and the second locking component is disposed on the bottom wall of the movable seat. The mating part of the first locking component is disposed at a first position in the earphone charging case. The mating part of the second locking component is disposed at a second position in the earphone charging case. In the first state, the fixing member of the first locking component is fixedly connected to the mating member of the first locking component; In the first state, the material of the stop member located in the second position is a permanent magnet, which is fixedly connected to the fixing member of the second locking component and the mating member of the second locking component. The two movable seats facing away from each other are defined as the second electromagnet side, which is configured to receive a first fixed signal. When the movable seat is in the second position, the second electromagnet side is energized. In the energized state, the second electromagnet side is configured to receive a position fixing signal, and the second electromagnet side is magnetically fixed to the stop member.

8. The earphone charging case as described in claim 4, characterized in that, The movable seat has a first opening facing the bottom wall of the earphone charging case; the earphone charging case has a battery removal window and a shield, the battery removal window is located on the bottom wall of the earphone charging case, and the shield is located on the battery removal window; When the movable seat is in the first position in the earphone charging case, the battery removal window is aligned and connected to the first opening.

9. A wireless earphone, used in an earphone charging case as described in any one of claims 1 to 8, characterized in that, The wireless earphone is equipped with a main battery and can be electrically connected to the backup battery of the earphone charging case; the wireless earphone has a charging state, in which the wireless earphone is connected to the backup battery and the backup battery can charge the wireless earphone.

10. A headphone kit, characterized in that, The headphone kit includes a headphone charging case as claimed in any one of claims 1 to 8 and wireless headphones as claimed in claim 9.

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