Charging case and wireless earbuds

Abstract

This application relates to a charging case and wireless earphones. The charging case includes: a case body, a receiving cavity, a first conductive elastic element, an electromagnet, and a battery; the receiving cavity, electromagnet, and battery are located on the case body; the first conductive elastic element is located on the bottom surface of the receiving cavity and is electrically connected to the battery via the electromagnet; the receiving cavity is used to receive the wireless earphones; a permanent magnet is disposed in the sound cavity of the wireless earphones; when the wireless earphones are located in the receiving cavity, the first conductive elastic element contacts the first charging interface of the wireless earphones, and the battery can charge the wireless earphones; during the charging process, the electromagnet attracts the wireless earphones by attracting the permanent magnet, and the first conductive elastic element is compressed; when the wireless earphones are fully charged, the charging current is zero, the magnetism of the electromagnet disappears, the electromagnet releases the wireless earphones, and the first conductive elastic element lifts the wireless earphones. The technical solution of this application facilitates the removal of the wireless earphones from the charging case.

Description

Technical Field

[0001] This invention relates to the field of charging technology, specifically to a charging case and wireless earphones. Background Technology

[0002] In related technologies, with the upgrade of wireless Bluetooth technology, traditional in-ear headphones have gradually evolved from wired to wireless, from neckband headphones to TWS (True Wireless Stereo) headphones. According to reliable research reports, the future market potential of TWS is 150 billion yuan. In addition to existing mobile phone manufacturers, other smart wearable manufacturers and traditional audio equipment manufacturers are also making efforts in the TWS headphone market. The current product form is basically composed of left and right individual earbuds and an earbud charging case. To prevent the earbuds from shaking freely in the charging case, magnets are placed in the non-acoustic cavity positions inside the earbuds. After the earbuds are placed in the charging case, the magnets inside the charging case attract each other, thus fixing the earbuds in place. At the same time, the shape of the charging case is basically the same as the shape of the earbuds. Although this design is simple, some earbuds are not very convenient to take out, especially when the earbuds themselves have a smooth surface or when the user's hands are oily or dirty. Summary of the Invention

[0003] The purpose of this application is to provide a charging case and wireless earphones that facilitate the removal of the wireless earphones from the charging case.

[0004] According to a first aspect of the embodiments of this application, a charging case is provided, comprising: a case body, a receiving cavity, a first conductive elastic element, an electromagnet, and a battery;

[0005] The receiving cavity, the electromagnet, and the battery are located on the chamber body; the first conductive elastic element is located on the bottom surface of the receiving cavity, and the first conductive elastic element is electrically connected to the battery via the electromagnet;

[0006] The cavity is used to house the wireless earphones; a permanent magnet is provided in the acoustic cavity of the wireless earphones.

[0007] When the wireless earphone is located in the receiving cavity, the first conductive elastic element contacts the first charging interface of the wireless earphone, and the battery can charge the wireless earphone. During the charging process, the charging current output by the battery is greater than zero, and the electromagnet attracts the wireless earphone by attracting the permanent magnet, and the first conductive elastic element is compressed. When the wireless earphone finishes charging, the charging current is zero, the magnetism of the electromagnet disappears, the electromagnet releases the wireless earphone, and the first conductive elastic element lifts the wireless earphone.

[0008] In one embodiment, the electromagnet includes a ferrite and a coil, the ferrite being located in the coil, and the coil being electrically connected to the battery.

[0009] In one embodiment, the ferrite is columnar; the polarity of the end of the electromagnet near the first conductive elastic element is opposite to the polarity of the end of the permanent magnet near the electromagnet.

[0010] In one embodiment, the first conductive elastic element is a conductive spring sheet, one end of which is connected to the bottom surface of the receiving cavity, and the other end is raised in a free state.

[0011] In one embodiment, the first conductive elastic element is a conductive elastic column, and one end of the conductive elastic column is fixedly connected to the bottom surface of the receiving cavity.

[0012] In one embodiment, the charging case further includes a touch switch, a button and a first wire, and the case body is provided with an opening;

[0013] The button is located in the opening, which exposes the first end of the button. The second end of the button abuts against the top of the touch switch. The bottom two ends of the touch switch are connected or disconnected from the first wire. The first wire is also connected to the first conductive elastic element, the electromagnet, and the first pole of the battery.

[0014] When the button is not pressed, the bottom two ends of the touch switch are connected to the first wire; when the button is pressed, the bottom two ends of the touch switch are disconnected from the first wire.

[0015] In one embodiment, the surface of the first end of the button is flush with the outer surface of the housing, or the first end of the button protrudes from the housing.

[0016] In one embodiment, the charging case further includes a second conductive elastic element, a touch switch, a button, and a second wire, and the case body is provided with an opening;

[0017] The second conductive elastic element is located on the bottom surface of the receiving cavity; the first conductive elastic element is electrically connected to the first pole of the battery via the electromagnet; and the second conductive elastic element is electrically connected to the second pole of the battery via the second wire.

[0018] When the wireless earphone is located in the receiving cavity, the second conductive elastic element contacts the second charging interface of the wireless earphone;

[0019] The button is located in the opening, which exposes one end of the button. The other end of the button abuts against the top of the touch switch. The bottom two ends of the touch switch are connected or disconnected from the second wire.

[0020] When the button is not pressed, the bottom two ends of the touch switch are connected to the second wire; when the button is pressed, the bottom two ends of the touch switch are disconnected from the second wire.

[0021] In one embodiment, the surface of the first end of the button is flush with the outer surface of the housing, or the first end of the button protrudes from the housing.

[0022] According to a second aspect of the embodiments of this application, a wireless earphone is provided, the wireless earphone being adapted to the charging case described above;

[0023] The wireless earphone has a permanent magnet installed in its sound cavity;

[0024] The wireless earphone is detachably connected to the first conductive elastic element.

[0025] Compared with existing technologies, the advantages of this application are as follows: The charging case includes not only the case body, the receiving cavity, and the battery, but also a first conductive elastic element and an electromagnet. The receiving cavity, electromagnet, and battery are located on the case body, and the first conductive elastic element is located on the bottom surface of the receiving cavity. The first conductive elastic element is electrically connected to the battery via the electromagnet. The receiving cavity is used to accommodate the wireless earphones. A permanent magnet is installed in the sound cavity of the wireless earphones. When the wireless earphones are located in the receiving cavity, the first conductive elastic element contacts the first charging interface of the wireless earphones, and the battery can charge the wireless earphones. During the charging process, the charging current output by the battery is greater than zero. The electromagnet attracts the wireless earphones by attracting the permanent magnet, and the first conductive elastic element is compressed. When the wireless earphones are fully charged, the charging current is zero, the magnetism of the electromagnet disappears, the electromagnet releases the wireless earphones, and the first conductive elastic element lifts the wireless earphones. Thus, when the wireless earphones are fully charged, the first conductive elastic element lifts the wireless earphones, making it convenient for the user to remove them from the charging case. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of a charging compartment based on relevant technologies.

[0027] Figure 2 This is a schematic diagram of a charging case according to an exemplary embodiment.

[0028] Figure 3 This is a circuit diagram illustrating wireless earphones being charged in a charging case according to an exemplary embodiment.

[0029] Figure 4 This is a schematic diagram of the structure of a charging case according to another exemplary embodiment.

[0030] Figure 5 This is a schematic diagram illustrating the charging characteristics of a wireless earphone according to an exemplary embodiment.

[0031] Figure 6 This is a circuit diagram illustrating wireless earphones being charged in a charging case, according to another exemplary embodiment. Detailed Implementation

[0032] Unless otherwise defined, the technical or scientific terms used in this specification and claims shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. Specific embodiments of the invention will be described below with reference to the accompanying drawings. It should be noted that, in order to provide a concise description, this specification cannot provide a detailed description of all features of the actual embodiments. Without departing from the spirit and scope of the invention, those skilled in the art can make modifications and substitutions to the embodiments of the invention, and the resulting embodiments are also within the protection scope of the invention.

[0033] In related technologies, TWS earbuds typically consist of a single earbud and a charging case. To prevent the earbuds from moving around inside the charging case, they are held in place by magnets. The charging case's internal shape is roughly identical to the earbuds' shape. Removing the earbuds from the charging case is always done by magnetic force, and the design makes them difficult to remove, especially if the earbuds have smooth surfaces or if the user's hands are oily or dirty. For example... Figure 1 As shown, the charging case and earbuds of a certain company are riveted together so tightly that they are extremely difficult to remove.

[0034] Users may not know whether the earbuds are fully charged after being placed in the charging case, which could lead them to mistakenly believe that the battery life is poor.

[0035] When earbuds are placed in the charging case, even if they are fully charged, prolonged periods without removal will cause the earbud battery voltage to drop. The charging case will then charge the earbuds (the charging contacts are in contact with the earbuds, and the entire circuit is not open), and the earbuds will be attracted to the charging case by electromagnetic force. In actual use, if the user wants to use the earbuds while they are charging, they will still be difficult to remove as they are attached to the charging case.

[0036] In typical designs, magnets are added to the earphones so that they can be magnetically attracted to the charging case without being removed, allowing for a tight connection. However, adding magnets increases the weight of the earphones, affects the center of gravity and causes discomfort when wearing them, and also increases costs.

[0037] To address the aforementioned technical problems, this application proposes a charging case and wireless earphones, which facilitate the removal of the wireless earphones from the charging case.

[0038] One embodiment of this application provides a charging case. This charging case is used to charge wireless earphones. Please refer to... Figure 2 The charging compartment may include: a compartment body 100, a receiving cavity 105, a first conductive elastic element 102, an electromagnet 103, and a battery (not shown).

[0039] like Figure 2 As shown, the receiving cavity 105, electromagnet 103, and battery are located on the housing 100. The first conductive elastic element 102 is located on the bottom surface of the receiving cavity 105, and the first conductive elastic element 102 is electrically connected to the battery via the electromagnet 103.

[0040] In this embodiment, the receiving cavity 105 is used to receive wireless headphones. A permanent magnet is disposed within the sound cavity of the wireless headphones. For example, the wireless headphones can be balanced armature headphones or dynamic headphones.

[0041] When the wireless earphone is located in the receiving cavity 105, the first conductive elastic element 102 contacts the first charging interface of the wireless earphone, the charging circuit can be connected, and the battery can charge the wireless earphone.

[0042] During the charging process of the wireless earphones, the charging current output by the battery is greater than zero. When the electromagnet 103 is energized, it generates magnetism. The electromagnet 103 attracts the wireless earphones by attracting them to the permanent magnet in the earphones, causing the earphones to be attached to the bottom surface 1053 of the receiving cavity 105. Since the first conductive elastic element 102 is located between the bottom surface of the receiving cavity 105 and the wireless earphones, the first conductive elastic element 102 is compressed when the wireless earphones are attached to the bottom surface 1053 of the receiving cavity 105.

[0043] When the wireless earphones are fully charged, the charging current output by the battery is zero, the magnetism of the electromagnet 103 disappears, the electromagnet 103 releases the wireless earphones, and the first conductive elastic element 102 lifts the wireless earphones as it returns from a compressed state to a natural state.

[0044] In this embodiment, when the wireless earbuds have finished charging, the first conductive elastic element lifts the earbuds up, allowing the user to easily remove them from the charging case. Therefore, the technical solution provided in this application facilitates the user's removal of the wireless earbuds from the charging case.

[0045] The above provides a brief overview of the technical solution provided in this application. The following section provides a detailed description of the technical solution provided in this application.

[0046] One embodiment of this application provides a charging case. This charging case is used to charge wireless earphones. Please refer to... Figure 2 The charging compartment may include: a compartment body 100, a receiving cavity 105, a cover 106, a first conductive elastic element 102, a second conductive elastic element 107, an electromagnet 103, and a battery (not shown).

[0047] like Figure 2 As shown, the cover 106 is movably connected to the housing 100 so that the cover 106 can switch between an open state and a closed state. When the cover 106 is in the open state, the user can put the wireless earphones into the housing 105 or take the wireless earphones out of the housing 105.

[0048] like Figure 2 As shown, the receiving cavity 105 is located on the side of the charging case 100 facing the cover 106. The charging case may include more than one receiving cavity 105, for example, it may include two receiving cavities: a first receiving cavity 1051 and a second receiving cavity 1052, for charging a pair of wireless earphones. Of course, it may also include four receiving cavities 105, but is not limited thereto.

[0049] When the charging compartment includes more than one receiving cavity 105, the charging compartment includes more than one electromagnet 103, more than one first conductive elastic element 102, and more than one second conductive elastic element 107, and the number of electromagnets 103, the number of first conductive elastic elements 102, and the number of second conductive elastic elements 107 are the same. Each receiving cavity 105 has the same structure and function. The following description focuses on only one receiving cavity 105.

[0050] like Figure 2 As shown, the first conductive elastic element 102 and the second conductive elastic element 107 are located on the bottom surface 1053 of the receiving cavity 105. The first conductive elastic element 102 can be electrically connected to the first electrode of the battery via the electromagnet 103, and the second conductive elastic element 107 can be electrically connected to the second electrode of the battery. In this embodiment, the first electrode of the battery is the negative electrode, and the second electrode of the battery is the positive electrode. In other embodiments, the first electrode of the battery can be the positive electrode, and the second electrode of the battery can be the negative electrode.

[0051] In this embodiment, the electromagnet 103 and the battery are located on the chamber 100 and inside the chamber 100.

[0052] In this embodiment, the receiving cavity 105 is used to house the wireless earphones. When the wireless earphones need charging, they can be placed inside the receiving cavity 105. A permanent magnet is disposed in the sound cavity of the wireless earphones. The permanent magnet is an essential component for the wireless earphones to function as earphones. For example, the wireless earphones can be balanced armature earphones or dynamic earphones.

[0053] In this embodiment, the wireless earphone has a first charging port and a second charging port. When the wireless earphone is located in the receiving cavity 105, the first conductive elastic element 102 contacts the first charging port of the wireless earphone, and the second conductive elastic element 107 contacts the second charging port of the wireless earphone, thus connecting the charging circuit and enabling the battery to charge the wireless earphone.

[0054] In this embodiment, the first charging interface and the second charging interface can be two conductive contacts, for example, two metal contacts.

[0055] In this embodiment, the electromagnet 103 may include a ferrite core and a coil. The ferrite core is located within the coil, meaning it is wound around the coil, and the coil is electrically connected to a battery. The purpose of the ferrite core is to concentrate magnetic field lines, making it easier to generate a concentrated magnetic field at a localized location using a very small current.

[0056] In this embodiment, the ferrite can be columnar. The polarity of the end of the electromagnet 103 near the first conductive elastic element 102 is opposite to the polarity of the end of the permanent magnet in the wireless earphone near the electromagnet 103. In this way, the electromagnet 103 can attract the permanent magnet in the wireless earphone, thereby attracting the wireless earphone into the receiving cavity 105.

[0057] In this embodiment, the winding direction of the coil outside the ferrite can be determined according to the polarity of the end of the permanent magnet in the wireless earphone that is close to the electromagnet 103, and the number of turns of the coil outside the ferrite can be determined according to the attraction between the electromagnet 103 and the permanent magnet in the wireless earphone.

[0058] In this embodiment, the ferrite may be manganese-zinc ferrite, nickel-zinc ferrite, magnesium-zinc ferrite, barium ferrite, strontium ferrite, lithium ferrite, or lead ferrite.

[0059] like Figure 2 As shown, in this embodiment, the first conductive elastic element 102 is a first conductive spring sheet, one end of which is connected to the bottom surface 1053 of the receiving cavity 105, and the other end is raised in a free state. The second conductive elastic element 107 is a second conductive spring sheet, one end of which is connected to the bottom surface 1053 of the receiving cavity 105, and the other end is raised in a free state.

[0060] In other embodiments, the first conductive elastic element 102 may be a first conductive elastic post, one end of which is fixedly connected to the bottom surface 1053 of the receiving cavity 105. The second conductive elastic element 107 may be a second conductive elastic post, one end of which is fixedly connected to the bottom surface 1053 of the receiving cavity 105.

[0061] In this embodiment, as Figure 2 As shown, the charging case also includes a touch switch 104, a button 101, and a first wire 108, and the case body 100 has an opening (not shown).

[0062] In this embodiment, button 101 is located in an opening on the housing 100. The opening is used to expose the first end of button 101. The second end of button 101 abuts against the top T of touch switch 104. The bottom D ends of touch switch 104 are connected or disconnected from the first wire 108. The first wire 108 is also connected to the first conductive elastic element 102, electromagnet 103 and the first pole of battery.

[0063] When button 101 is not pressed, the two ends of the bottom D of touch switch 104 are connected to the first wire 108. When button 101 is pressed, the two ends of the bottom D of touch switch 104 are disconnected from the first wire 108.

[0064] In this embodiment, the surface of the first end of the button 101 is flush with the outer surface of the housing 100. In other embodiments, the first end of the button 101 may protrude from the housing 100.

[0065] like Figure 3 As shown, the first charging port C1 of the wireless earphone 200 is electrically connected to the negative terminal N of the battery 300 via the touch switch 104 and the electromagnet 103, and the second charging port C2 of the wireless earphone 200 is electrically connected to the positive terminal P of the battery 300.

[0066] When the wireless earphone 200 is placed in the receiving cavity 105, and when the button 101 is not pressed, the bottom D ends of the touch switch 104 are connected to the first wire 108. Figure 3 The charging circuit shown is activated, and battery 300 charges wireless earphone 200.

[0067] When button 101 is pressed, the bottom D ends of touch switch 104 are disconnected from the first wire 108. Figure 3 The charging circuit shown is open, and battery 300 cannot charge wireless earphone 200.

[0068] In this embodiment, as Figure 2 and Figure 4As shown, the charging compartment may include a first receiving cavity 1051, a second receiving cavity 1052, a first conductive elastic element 102, a second conductive elastic element 107, a third conductive elastic element 109, a fourth conductive elastic element 110, a first electromagnet 1031, a second electromagnet 1032, a touch switch 104, and a battery.

[0069] In this embodiment, the first receiving cavity 1051 is used to receive the first wireless earphone, and the second receiving cavity 1052 is used to receive the second wireless earphone. The charging case can charge the first wireless earphone and the second wireless earphone simultaneously.

[0070] In this embodiment, the first conductive elastic element 102 and the second conductive elastic element 107 are located on the bottom surface 1053 of the first receiving cavity 1051. When the first wireless earphone is located in the first receiving cavity 1051, the first conductive elastic element 102 contacts the first charging interface of the first wireless earphone, and the second conductive elastic element 107 contacts the second charging interface of the first wireless earphone.

[0071] The third conductive elastic element 109 and the fourth conductive elastic element 110 are located on the bottom surface 1054 of the second receiving cavity 1052. When the second wireless earphone is located in the second receiving cavity 1052, the third conductive elastic element 109 is in contact with the third charging interface of the second wireless earphone, and the fourth conductive elastic element 110 is in contact with the fourth charging interface of the second wireless earphone.

[0072] like Figure 4 As shown, the first conductive elastic element 102 is connected to the negative terminal of the battery via the first electromagnet 1031 and the touch switch 104, and the third conductive elastic element 109 is connected to the negative terminal of the battery via the second electromagnet 1032 and the touch switch 104. That is, the touch switch 104 can control whether the charging circuit of the first wireless earphone and the second wireless earphone is disconnected.

[0073] like Figure 4 As shown, the second conductive elastic element 107 and the fourth conductive elastic element 110 are connected to the positive terminal of the battery.

[0074] The structure of the charging case provided in this application has been described above. The working principle of the charging case will be explained below.

[0075] First, let's introduce the charging characteristics of wireless earbuds.

[0076] like Figure 5As shown, when the battery voltage inside the wireless earbuds is undervoltage protected, it enters trickle-charge mode after connecting an external charging device, initiating trickle charging with a low current. During trickle charging, the battery voltage gradually increases with the charging current. When the battery voltage detection module detects that the battery voltage has reached the first voltage setting value (e.g., 2V), it switches to pre-charge mode. As the battery voltage continues to rise to the second voltage setting value, it enters fast charging mode, which is a constant current charging mode with maximum charging current, while the battery voltage gradually increases. When the battery voltage rises to the third voltage setting value of the constant voltage charging mode, it switches to constant voltage charging, meaning the battery voltage remains constant while the charging current gradually decreases. When the charging current drops to the software-set cutoff current, charging stops, and the charging current is 0mA, indicating charging is complete. If the external charging device is not disconnected, charging will resume when the battery voltage inside the wireless earbuds drops to the fourth voltage setting value.

[0077] The relationship between the magnetic field generated by electromagnet 103 and the charging current is as follows: for the same energized coil, the larger the charging current, the stronger the magnetic field generated by the coil; conversely, the smaller the charging current, the weaker the magnetic field. For the same charging current, the more turns of the energized coil, the stronger the magnetic field generated; conversely, the fewer the turns, the weaker the magnetic field. The direction of the magnetic field follows the left-hand screw law.

[0078] The following example illustrates the process of charging the first wireless earphone.

[0079] When the battery of the first wireless earphone is depleted, it is placed in the first receiving cavity 1051 of the charging case. The first conductive elastic element 102 on the bottom of the charging case contacts the first charging port C1 of the first wireless earphone, and the second conductive elastic element 107 contacts the second charging port C2 of the first wireless earphone, thus activating the charging mode. When the charging current flows through the electromagnet 103, which is composed of a coil and ferrite, the electromagnet 103 generates a magnetic field. Because it is DC charging, the magnetic poles of the electromagnet 103 can be controlled by controlling the winding direction of the coil. The electromagnet 103 attracts the permanent magnet on the sound cavity of the first wireless earphone. Since the electromagnet 103 is fixed inside the charging case, the magnetic force holds the first wireless earphone in place, ensuring the charging process.

[0080] When the first wireless earphone reaches the set cutoff current, charging stops and the charging current becomes zero. The magnetic force of the electromagnet 103 disappears, and the first conductive elastic element 102 and the second conductive elastic element 107 at the bottom of the charging case, no longer bound by electromagnetic force, will slightly lift the first wireless earphone, making it easier for the user to retrieve it.

[0081] Meanwhile, if the battery voltage of the first wireless earphone drops due to prolonged disuse, the charging case will recharge the first wireless earphone (the first conductive elastic element 102 is in contact with the first wireless earphone, and the entire charging circuit is not open). The first wireless earphone will then be attracted into the charging case by electromagnetic force.

[0082] When the first wireless earbuds are charging in the charging case, the electromagnet 103 holds them in place. If the user wants to remove the earbuds, they can press button 101 to cut off the charging circuit, causing the electromagnet 103 to lose its magnetism and stop holding the earbuds. The first conductive elastic element 102 at the bottom of the charging case will then gently lift the earbuds up. This makes it easy for the user to remove the earbuds while they are charging, unaffected by the charging status of the earbuds' batteries.

[0083] When the user stops pressing button 101, the bottom D ends of touch switch 104 are reconnected to the first wire 108, and the first wireless earphone will enter the charging state again when placed in the charging case.

[0084] In this embodiment, when the wireless earbuds finish charging, the first conductive elastic element lifts them up, allowing the user to easily remove them from the charging case. Therefore, the technical solution provided in this application facilitates the user's removal of the wireless earbuds from the charging case. Furthermore, the lifting of the earbuds by the first conductive elastic element when they finish charging indicates that charging is complete, and the user can clearly know that charging is finished when they see the earbuds being lifted. By indicating the charging status of the earbuds through their position in the charging case, the user is prevented from mistakenly believing that the battery life is poor due to a lack of awareness of the charging status.

[0085] In this embodiment, the charging current is converted into a force by utilizing the change in charging current and the relationship between the magnetic field and the charging current to control whether the wireless earphone is attracted.

[0086] Another embodiment of this application also provides a charging case. In the above embodiments, the touch switch 104 is connected between the first conductive elastic element 102 and the first terminal of the battery. In this embodiment, the touch switch 104 is connected to the second conductive elastic element 107 and the second terminal of the battery.

[0087] In this embodiment, the charging compartment may include a compartment body 100, a receiving cavity 105, a first conductive elastic element 102, a second conductive elastic element 107, an electromagnet 103, a battery, a touch switch 104, a button 101, and a second wire. The compartment body 100 is provided with an opening.

[0088] The receiving cavity 105, electromagnet 103, and battery are located on the housing 100. The receiving cavity 105 is used to house the wireless earphones; a permanent magnet is installed in the sound cavity of the wireless earphones.

[0089] The first conductive elastic element 102 and the second conductive elastic element 107 are located on the bottom surface of the receiving cavity 105. The first conductive elastic element 102 is electrically connected to the first terminal (negative N) of the battery via an electromagnet 103, and the second conductive elastic element 107 is electrically connected to the second terminal (positive P) of the battery via a second wire.

[0090] When the wireless earphone is in the receiving cavity, the first conductive elastic element 102 contacts the first charging port of the wireless earphone. The second conductive elastic element 107 contacts the second charging port of the wireless earphone. That is, the first charging port C1 of the wireless earphone is electrically connected to the first terminal (negative N) of the battery via the electromagnet 103, and the second charging port C2 is electrically connected to the second terminal (positive P) of the battery via the touch switch 104. The touch switch 104 is connected or disconnected from the second wire 601, as detailed below. Figure 6 As shown.

[0091] Button 101 is located in an opening that exposes one end of button 101. The other end of button 101 abuts against the top T of touch switch 104. The bottom D ends of touch switch 104 are connected or disconnected from the second wire 601.

[0092] In this embodiment, the surface of the first end of the button 101 is flush with the outer surface of the housing 100. In other embodiments, the first end of the button 101 protrudes from the outer surface of the housing 100.

[0093] like Figure 6 As shown, when button 101 is not pressed, the two ends of bottom D of touch switch 104 are connected to the second wire 601. When button 101 is pressed, the two ends of bottom D of touch switch 104 are disconnected from the second wire 601.

[0094] When the wireless earbuds are charging in the charging case, the electromagnet 103 holds them in place. If the user wants to remove the earbuds, they can press button 101 to cut off the charging circuit, causing the electromagnet 103 to lose its magnetism and stop holding the earbuds in place. This makes it easier for the user to take out the earbuds.

[0095] Another embodiment of this application provides a wireless earphone. This wireless earphone is compatible with the charging case of any of the above embodiments.

[0096] A permanent magnet is installed in the sound cavity of the wireless earphone; the wireless earphone is detachably connected to the first conductive elastic element.

[0097] In this embodiment, a permanent magnet can be installed in the acoustic cavity of the wireless earphone to achieve the purpose of being attracted by an electromagnet. There is no need to install an additional magnet in a non-acoustic cavity position of the wireless earphone. This can reduce the weight and cost of the wireless earphone, reduce the interference of the magnetic field emitted by the magnet on Bluetooth communication, and avoid the problem of the additional magnet affecting the center of gravity of the wireless earphone, which would cause discomfort when wearing it.

[0098] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0099] The above description of the embodiments is intended to enable those skilled in the art to understand and apply this application. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without creative effort. Therefore, this application is not limited to the embodiments described herein, and any improvements and modifications made by those skilled in the art based on the disclosure of this application without departing from the scope and spirit of this application are within the scope of this application.

Claims

1. A charging case, characterized in that, include: The container body, the receiving cavity, the first conductive elastic element, the electromagnet, and the battery; The receiving cavity, the electromagnet, and the battery are located on the chamber body; the first conductive elastic element is located on the bottom surface of the receiving cavity, and the first conductive elastic element is electrically connected to the battery via the electromagnet; The cavity is used to house the wireless earphones; a permanent magnet is provided in the acoustic cavity of the wireless earphones. When the wireless earphone is located in the receiving cavity, the first conductive elastic element contacts the first charging interface of the wireless earphone, and the battery can charge the wireless earphone. During the charging process, the charging current output by the battery is greater than zero, and the electromagnet attracts the wireless earphone by attracting the permanent magnet, and the first conductive elastic element is compressed. When the wireless earphone finishes charging, the charging current is zero, the magnetism of the electromagnet disappears, the electromagnet releases the wireless earphone, and the first conductive elastic element lifts the wireless earphone.

2. The charging case as described in claim 1, characterized in that, The electromagnet includes a ferrite core and a coil, with the ferrite core located within the coil, and the coil electrically connected to the battery.

3. The charging case as described in claim 2, characterized in that, The ferrite is columnar; the polarity of the end of the electromagnet near the first conductive elastic element is opposite to the polarity of the end of the permanent magnet near the electromagnet.

4. The charging case as described in claim 1, characterized in that, The first conductive elastic element is a conductive spring sheet, one end of which is connected to the bottom surface of the receiving cavity, and the other end is raised in a free state.

5. The charging case as described in claim 1, characterized in that, The first conductive elastic element is a conductive elastic column, and one end of the conductive elastic column is fixedly connected to the bottom surface of the receiving cavity.

6. The charging case as described in claim 1, characterized in that, It also includes a touch switch, buttons and a first wire, and the chamber body is provided with an opening; The button is located in the opening, which exposes the first end of the button. The second end of the button abuts against the top of the touch switch. The bottom two ends of the touch switch are connected or disconnected from the first wire. The first wire is also connected to the first conductive elastic element, the electromagnet, and the first pole of the battery. When the button is not pressed, the bottom two ends of the touch switch are connected to the first wire; when the button is pressed, the bottom two ends of the touch switch are disconnected from the first wire.

7. The charging case as described in claim 6, characterized in that, The surface of the first end of the button is flush with the outer surface of the housing, or the first end of the button protrudes from the housing.

8. The charging case as described in claim 1, characterized in that, It also includes a second conductive elastic element, a touch switch, a button and a second wire, and the chamber body is provided with an opening; The second conductive elastic element is located on the bottom surface of the receiving cavity; the first conductive elastic element is electrically connected to the first pole of the battery via the electromagnet; and the second conductive elastic element is electrically connected to the second pole of the battery via the second wire. When the wireless earphone is located in the receiving cavity, the second conductive elastic element contacts the second charging interface of the wireless earphone; The button is located in the opening, which exposes one end of the button. The other end of the button abuts against the top of the touch switch. The bottom two ends of the touch switch are connected or disconnected from the second wire. When the button is not pressed, the bottom two ends of the touch switch are connected to the second wire; when the button is pressed, the bottom two ends of the touch switch are disconnected from the second wire.

9. The charging case as described in claim 8, characterized in that, The surface of the first end of the button is flush with the outer surface of the housing, or the first end of the button protrudes from the housing.

10. A wireless earphone, characterized in that, The wireless earphones are compatible with the charging case according to any one of claims 1 to 9; The wireless earphone has a permanent magnet installed in its sound cavity; The wireless earphone is detachably connected to the first conductive elastic element.

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