Charging case and earphone system

Abstract

The utility model provides a kind of charging box and earphone system, it is related to earphone charging box technical field.Charging box includes box body and box cover, box body is equipped with containing cavity, containing cavity is equipped with elastic inner support.Elastic inner support includes first area and second area, first area is at least used to support and position earphone main body, second area is at least used to contain and clamp ear hanging.The bottom of first area is equipped with first magnetic attraction component, first magnetic attraction component is configured to cooperate with second magnetic attraction component on earphone;The hardness of second area is less than the hardness of first area, when earphone is placed in containing cavity and charges, the magnetic attraction between first magnetic attraction component and second magnetic attraction component, drive ear hanging self-adaptively press tightly and embed in second area.Charging box can solve the problem of charging box in relevant technology, ear hanging needs to restore initial angle to be put in, leading to user needs to readjust ear hanging angle after each charging, affect use experience.

Description

Technical Field

[0001] This utility model relates to the field of headphone charging case technology, and in particular to a charging case and headphone system. Background Technology

[0002] With the increasing popularity of headphones, adjustable ear-hook headphones have become an important choice for sports, medical, and industrial applications due to their stable fit. Traditional adjustable ear-hook headphones typically allow for angle adjustment of the ear hooks to accommodate different user ear shapes.

[0003] However, when charging these types of headphones, the charging case usually uses a fixed groove or magnetic limiting structure, which requires the ear hooks to return to their initial angle before they can be inserted. This means that users have to readjust the ear hook angles after each charge, affecting the user experience. Utility Model Content

[0004] This invention provides a charging case and an earphone system. The charging case solves the problem in related technologies where the ear hooks need to be restored to their initial angle before they can be inserted, causing users to have to readjust the ear hook angles after each charging, which affects the user experience.

[0005] A first aspect of this utility model provides a charging case for storing earphones, the earphones including an earphone body and an ear hook connected to the earphone body. The charging case includes a case body and a case lid, the case body having a receiving cavity, and the receiving cavity having an elastic inner support; the elastic inner support includes a first region and a second region, the first region being at least for supporting and positioning the earphone body, and the second region being at least for receiving and holding the ear hook; the bottom of the first region has a first magnetic attraction component, the first magnetic attraction component being configured to cooperate with a second magnetic attraction component on the earphone; the hardness of the second region is less than the hardness of the first region, when the earphones are placed in the receiving cavity for charging, the magnetic attraction between the first magnetic attraction component and the second magnetic attraction component drives the ear hook to adaptively press and embed into the second region.

[0006] The charging case in this embodiment of the invention features an elastic inner tray within its housing cavity. The second region of this elastic inner tray has a lower hardness than the first region. Driven by the magnetic attraction between the first and second magnetic components, the ear hooks of the earphones automatically press and embed themselves into the soft second region when the earphones are placed in the charging case. This causes deformation in the second region, allowing it to absorb angle differences in the ear hooks through greater local deformation. This achieves physical compatibility and adaptive clamping for ear hooks at different angles when placed in the charging case. This solves the cumbersome problem of users having to manually return the ear hooks to a specific initial angle before placing them in the charging case each time, significantly improving ease of use and user experience.

[0007] The magnetic force between the first and second magnetic components primarily acts on the earphone body, quickly and accurately guiding and attaching it to the charging position in the first area, ensuring a reliable charging connection. Simultaneously, this magnetic force, combined with the elastic clamping force of the soft second area on the ear hook, achieves a secure, all-around fixation of the earphones within the charging case, preventing any rattling or detachment caused by the earphones shaking inside the case.

[0008] In one possible implementation, the hardness of the second region gradually decreases from the inner region near the first region to the outer region away from the first region.

[0009] This design, with its gradual hardness variation, avoids drastic abrupt changes in hardness at the interface between the ear hook and the inner tray, thus eliminating stress concentration points. This allows the stress to be gently distributed over a wider area when the elastic inner tray is repeatedly compressed and deformed by the ear hook, significantly reducing the risk of fatigue failure or permanent deformation due to stress concentration and extending the lifespan of the charging case.

[0010] In one possible implementation, the second region includes a buffer region and a contact region; the buffer region is located between the first region and the contact region; the hardness of the buffer region is greater than that of the contact region and less than that of the first region.

[0011] This design creates a three-tiered hardness gradient on the elastic inner support. The buffer area, acting as an intermediate layer, effectively eliminates abrupt changes in rigidity between the first area and the contact area, allowing stress to be released gradually when the ear hook is pressed in. This avoids material fatigue damage caused by stress concentration and significantly improves the durability and service life of the elastic inner support.

[0012] In one possible implementation, the hardness of the first region is greater than 40 Shore A and less than or equal to 45 Shore A; the hardness of the buffer region is greater than 35 Shore A and less than or equal to 40 Shore A; and the hardness of the contact region is greater than 30 Shore A and less than or equal to 35 Shore A.

[0013] By providing precise stiffness ratios, the optimal mechanical properties of each area are determined. This ensures that the headphone body receives solid support while the ear hooks offer a comfortable and soft fit.

[0014] In one possible implementation, the surface of the elastic inner support has a gradient texture structure.

[0015] By setting a gradient structure on the surface of the elastic inner holder, the friction between the elastic inner holder and the ear hook surface can be increased, preventing the earphones from shifting due to shaking inside the charging case.

[0016] In one possible implementation, the coefficient of friction in the first region is greater than that in the second region. This improves the stability of the headphone body.

[0017] In one possible implementation, the bottom of the elastic inner earpiece is provided with a first detection device and a prompting device; the first detection device is used to detect whether the earphone is in the charging position; the first detection device is electrically connected to the prompting device, and the prompting device is used to output a prompting signal when the earphone is not in the charging position.

[0018] This setup allows for monitoring of the charging status. It proactively alerts the user when the headphones fail to charge due to the ear hook not being fully engaged, effectively preventing users from mistakenly believing the headphones are charging and causing them to run out of power. This improves product reliability and user experience.

[0019] In one possible implementation, the first magnetic attraction component includes a ring-shaped magnet array; the magnet array includes a plurality of first magnets and a plurality of second magnets, the first magnets and second magnets being arranged in a uniformly alternating interval; the remanence of the first magnets is higher than that of the second magnets.

[0020] By using a ring-shaped magnet array with different remanent magnetization settings for the first and second magnets, and arranging them evenly and alternately, an asymmetric magnetic field distribution with a specific magnetic field gradient is formed within the charging case cavity, utilizing the difference in magnetic field strength generated by the magnets with different remanent magnetizations. When this asymmetric magnetic field interacts with the second magnetic attachment component on the earphones, it generates an anti-rotation torque that suppresses the rotation of the earphones along their central axis. This effectively overcomes the rotation tendency of the earphones that may be caused by the restoring force of the ear hook deformation or external shaking, ensuring the angular positioning accuracy of the earphones in the charging position. Thus, in addition to a large vertical attraction force, it provides additional horizontal correction and retention functions, ultimately achieving a stable and reliable all-around fixation of the earphones within the charging case, ensuring the stability of the charging connection.

[0021] In one possible implementation, the spacing between adjacent first and second magnets is between 1.5 mm and 2.5 mm.

[0022] This arrangement strikes a balance between maximizing magnetic field strength and preventing interference between the magnetic fields of adjacent magnets. Magnets that are too close together will cause a magnetic short circuit, while magnets that are too far apart will weaken the magnetic field; this spacing ensures good performance of the first magnetic attraction component.

[0023] In one possible implementation, the remanence of the first magnet is between 1.2 Tesla and 1.45 Tesla, and the remanence of the second magnet is between 1.0 Tesla and 1.3 Tesla.

[0024] In one possible implementation, a non-contact charging module is provided inside the box, and the charging module corresponds to the first area; wherein, the charging module includes a fixed coil and a movable coil, which are coaxially arranged; the movable coil can move along the axial direction of the fixed coil via a slide rail structure.

[0025] By introducing an axially movable movable coil into a fixed coil arranged coaxially, when the receiving coil inside the earphone shifts axially due to differences in ear hook angle, the movable coil can move along a sliding rail structure to compensate for this axial shift in real time, ensuring that the transmitting end (movable coil) and the receiving end (earphone coil) always maintain optimal coaxial alignment. This effectively overcomes the problem of reduced charging efficiency caused by ear hook deformation, significantly improving the transmission efficiency and stability of charging energy. Simultaneously, this adaptive feature enhances compatibility with earphones of different ear hook angles, ensuring users receive an efficient and reliable charging experience in any placement position, eliminating charging failures or slow charging caused by alignment deviations.

[0026] In one possible implementation, the movement range of the moving coil is within 3 millimeters.

[0027] By limiting the axial movement range of the moving coil to within 3 millimeters, an optimized balance between compensation range and structural compactness can be achieved. This ensures that the moving coil can effectively compensate for misalignment issues in most usage scenarios without causing an excessive increase in the overall size of the charging case due to the introduction of dynamic adjustment functionality.

[0028] In one possible implementation, the housing contains a second detection device and a control device; the second detection device and the control device are electrically connected, and the control device is connected to the slide rail structure; the second detection device is used to detect the position information of the earphone and transmit it to the control device; the control device is used to control the displacement of the moving coil through the slide rail structure according to the position information.

[0029] This implementation introduces a second detection device, which, together with the sliding rail structure, forms a closed-loop feedback control system, achieving intelligent and adaptive optimization of the charging process. The second detection device accurately acquires the precise position information of the earphone within the housing in real time. Based on this information, the sliding rail structure dynamically adjusts the axial position of the moving coil, thereby achieving real-time tracking and active alignment between the transmitting coil and the earphone receiving coil, improving charging efficiency. This avoids charging interruptions or sudden power drops caused by positional deviations, ensuring the high efficiency, reliability, and stability of the charging process.

[0030] A second aspect of this application provides an earphone system, including earphones and a charging case as described in any of the first aspects above, wherein the earphones are housed in the charging case.

[0031] The structure of this utility model, as well as its other utility model objectives and beneficial effects, will become more apparent and understandable through the description of the preferred embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of an earphone system provided in an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the structure of a charging box provided in an embodiment of the present utility model;

[0035] Figure 3 This is another structural schematic diagram of a charging box provided in an embodiment of the present utility model;

[0036] Figure 4 This is a cross-sectional schematic diagram of a partial structure of an earphone system provided in an embodiment of this utility model;

[0037] Figure 5 This is another structural schematic diagram of an earphone system provided in an embodiment of the present utility model.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1000 - Earphone system; 100 - Charging case; 110 - Case body;

[0040] 111-Receiving cavity; 112-Elastic inner support; 1121-First region;

[0041] 1122 - Second zone; 1123 - Buffer zone; 1124 - Contact zone;

[0042] 113-First magnetic attraction component; 1131-First magnet; 1132-Second magnet;

[0043] 114 - Charging module; 1141 - Fixed coil; 1142 - Moving coil;

[0044] 120 - Case lid; 200 - Earphones; 210 - Earphone body;

[0045] 220 - Ear hook; 230 - Second magnetic component. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, other embodiments obtained by those skilled in the art without creative effort are all within the protection scope of this utility model.

[0047] The charging box and earphone system of this utility model embodiment will be described in detail below with reference to the accompanying drawings.

[0048] Figure 1 This is a schematic diagram of the structure of an earphone system provided in an embodiment of the present invention.

[0049] like Figure 1 As shown, the headphone system 1000 may include earphones 200 and a charging case 100. The charging case 100 is used to store the earphones 200 and charge them. The earphones 200 may include an earphone body 210 and an ear hook 220 connected to the earphone body 210. The earphone body 210 has a contact area for docking with the charging module 114 inside the charging case 100, thereby enabling the earphones 200 to be charged.

[0050] like Figure 2 As shown, this embodiment of the utility model provides a charging case 100, which may include a case body 110 and a case lid 120. The case lid 120 is openable and closable at the top of the case body 110 to open or close the earphone case 200. The case body 110 has a receiving cavity 111, and the receiving cavity 111 has an elastic inner support 112. The elastic inner support 112 may include a first region 1121 and a second region 1122. The first region 1121 is used to support and position the earphone body 210, and the second region 1122 is used to receive and hold the ear hook 220.

[0051] See Figure 1 As shown, for example, most of the earphone body 210 is located within the first region 1121, and a small portion of the earphone body 210 is located within the second region 1122. The ear hook 220 is located within the second region 1122.

[0052] Figure 3 This is another structural schematic diagram of a charging box provided in an embodiment of the present utility model. Figure 4 This is a cross-sectional schematic diagram of a partial structure of an earphone system provided in an embodiment of this utility model. Figure 3 The structure of the first magnetic component and the charging module 114 is shown in the figure. Figure 4 The image shows a side view of the earphone 200 case and the earphone 200 during charging. Of course, Figure 3 and Figure 4 This is for illustrative purposes only and does not constitute a limitation on the actual structure.

[0053] like Figure 3 and Figure 4 As shown, a first magnetic component 113 is provided at the bottom of the first region 1121, and the first magnetic component 113 is configured to cooperate with the second magnetic component 230 on the earphone 200. The hardness of the second region 1122 is less than that of the first region 1121. When the earphone 200 is placed in the receiving cavity 111 for charging, the magnetic attraction between the first magnetic component 113 and the second magnetic component 230 drives the ear hook 220 to adaptively press and embed itself in the second region 1122.

[0054] In one possible implementation, such as Figure 3 and Figure 4 As shown, the first magnetic attraction component 113 may include a ring-shaped magnet array. The magnet array may include a plurality of first magnets 1131 and a plurality of second magnets 1132, which are uniformly and alternately arranged. The remanence of the first magnets 1131 is higher than that of the second magnets 1132.

[0055] For example, such as Figure 3 As shown, the first magnet 1131 and the second magnet 1132 can have the same shape, and both can be fan-ring structures (similar to a trapezoidal shape). The number of first magnets 1131 and the number of second magnets 1132 are the same. For example, in the embodiment of this application, there are four first magnets 1131 and four second magnets 1132, and the first magnets 1131 and the second magnets 1132 are arranged alternately.

[0056] It should be noted that the "fan ring" has two parallel arc sides (because they are arcs on concentric circles), and the "waist" consists of two rays. It can be understood as a curved trapezoid.

[0057] For example, the first magnet 1131 and the second magnet 1132 have the same polarity. Both the first magnet 1131 and the second magnet 1132 can be N-pole magnets. Correspondingly, the second magnetic attraction component 230 on the earphone body 210 can be an S-pole magnet. The second magnetic attraction component 230 can be an integrated magnetic ring structure corresponding to the shape of the first magnetic attraction component 113, or it can be a ring-shaped array of magnets identical to the first magnetic attraction component 113. In this embodiment, the structure of the second magnetic attraction component 230 is not further limited.

[0058] When the earphone 200 is placed inside the receiving cavity 111, the magnetic attraction between the first magnetic component 113 and the second magnetic component 230 can automatically guide the earphone 200 to slide into the charging position, regardless of the angle of the ear hook 220. For example, the magnetic attraction force can be set to 0.5N. Of course, it can also be set to 0.6N, 0.7N, etc. In this embodiment, the magnitude of the magnetic attraction force between the first magnetic component 113 and the second magnetic component 230 is not further limited.

[0059] By setting different remanent magnetizations for the first magnet 1131 and the second magnet 1132 and arranging them evenly and alternately in a ring-shaped magnet array, an asymmetric magnetic field distribution with a specific magnetic field gradient is formed within the receiving cavity 111 of the charging case 100 by utilizing the difference in magnetic field strength generated by the magnets with different remanent magnetizations. When this asymmetric magnetic field interacts with the second magnetic attraction component 230 on the earphone 200, it can generate an anti-rotation torque that suppresses the rotation of the earphone 200 along its central axis. This effectively overcomes the rotation tendency of the earphone 200 that may be caused by the deformation recovery force of the ear hook 220 or external shaking, ensuring the angular positioning accuracy of the earphone 200 in the charging position. Thus, in addition to a large vertical attraction force, it provides additional horizontal correction and retention functions, ultimately achieving a stable and reliable all-round fixation of the earphone 200 within the charging case, ensuring the stability of the charging connection.

[0060] In one possible implementation, the spacing between adjacent first magnets 1131 and second magnets 1132 is between 1.5 mm and 2.5 mm. This achieves a balance between maximizing the magnetic field strength and preventing interference between the magnetic fields of adjacent magnets. Because magnets that are too close together will cause a magnetic short circuit, and magnets that are too far apart will weaken the magnetic field, this spacing ensures good performance of the first magnetic attraction component 113.

[0061] In one possible implementation, the remanence of the first magnet 1131 is between 1.2 Tesla and 1.45 Tesla, and the remanence of the second magnet 1132 is between 1.0 Tesla and 1.3 Tesla. For example, the remanence of the first magnet 1131 can be any value among 1.2 Tesla, 1.3 Tesla, 1.35 Tesla, 1.4 Tesla, and 1.45 Tesla. The remanence of the second magnet 1132 can be any value among 1.0 Tesla, 1.1 Tesla, 1.2 Tesla, and 1.3 Tesla. In this embodiment, the specific values ​​of the remanence of the first magnet 1131 and the second magnet 1132 are not further limited.

[0062] In one possible implementation, a non-contact charging module 114 is provided inside the housing 110, corresponding to the first region 1121. The charging module 114 may include a fixed coil 1141 and a movable coil 1142, which are coaxially arranged. The movable coil 1142 can move along the axial direction of the fixed coil 1141 via a slide rail structure (not shown in the figure).

[0063] For example, the charging module 114 can be disposed inside the housing 110 at the bottom of the first region 1121. The fixed coil 1141 and the movable coil 1142 can be distributed vertically along the axial direction of the fixed coil 1141, and the movable coil 1142 can be located in the space of the fixed coil 1141 near the top cover.

[0064] In some embodiments, the diameter of the fixed coil 1141 can be 15 mm, and the diameter of the movable coil 1142 can be 10 mm. In this embodiment, the diameters of the fixed coil 1141 and the movable coil 1142 are not further limited.

[0065] By introducing an axially movable movable coil 1142 into the coaxially arranged fixed coil 1141, when the receiving coil inside the earphone 200 shifts axially due to the difference in the ear hook 220 angle, the movable coil 1142 can move along the slide rail structure to compensate for the axial shift in real time, ensuring that the transmitting end (movable coil 1142) and the receiving end (earphone 200 coil) always maintain a better coaxial alignment. This effectively overcomes the problem of reduced charging efficiency caused by ear hook 220 deformation, significantly improving the transmission efficiency and stability of charging energy. At the same time, this adaptive feature enhances the compatibility of earphones 200 with different ear hook 220 angles, ensuring that users can obtain an efficient and reliable charging experience in any placement state, eliminating the problem of charging failure or slow charging caused by alignment deviation.

[0066] In one possible implementation, the movement range of the movable coil 1142 is within 3 millimeters. That is, the movable coil 1142 can move up and down 3 millimeters along the axial direction of the fixed coil 1141. Of course, in other embodiments, the movement range of the movable coil 1142 can be set to be larger or smaller. In this embodiment, the movement range of the movable coil 1142 is not further limited.

[0067] By limiting the axial movement range of the movable coil 1142 to within 3 mm, an optimized balance between compensation range and structural compactness can be achieved. This ensures that the movable coil 1142 can effectively compensate for misalignment issues in most usage scenarios, without causing an excessive increase in the overall size of the charging case 100 due to the introduction of dynamic adjustment functionality.

[0068] In one possible implementation, the bottom of the elastic inner earpiece 112 is provided with a first detection device and a prompting device (not shown in the figure). The first detection device is used to detect whether the earphone 200 is in the charging position. The first detection device is electrically connected to the prompting device, which is used to output a prompt signal when the earphone 200 is not in the charging position.

[0069] For example, the first detection device can be a thin-film pressure sensor. The indication device can be a light-emitting diode (LED). The thin-film pressure sensor is used to detect whether the earphone 200 is fully seated. When the earphone 200 is not seated, the LED can indicate to the user that the charging position is incorrect. This allows the user to quickly correct the charging position and avoids affecting normal use.

[0070] By setting up a primary detection device and a notification device, the charging status can be monitored. When the earphone 200 fails to charge due to the ear hook 220 not being fully in place, it proactively sends a notification signal to the user, effectively preventing the user from mistakenly believing the earphone 200 is charging and causing it to run out of power, thus improving product reliability and user experience.

[0071] In one possible implementation, the housing 110 includes a second detection device and a control device (not shown in the figure). The second detection device and the control device are electrically connected, and the control device is connected to the slide rail structure. The second detection device is used to detect the position information of the earphone 200 and transmit it to the control device. The control device is used to control the displacement of the moving coil 1142 via the slide rail structure according to the position information.

[0072] For example, a drive device may also be provided inside the housing 110. The drive device is connected to the slide rail structure and to the control device. The control device is used to control the drive device according to the position information, so as to move the slide rail and drive the moving coil 1142 to move. The slide rail structure can be a linear guide rail, a ball slide rail, or the like, and the drive device that drives the slide rail structure can be a motor or an electromagnet, or the like.

[0073] In some embodiments, the second detection device may be a Hall sensor. Of course, other structures are also possible, and in the embodiments of this application, the specific structure of the second detection device is not further limited.

[0074] This embodiment of the application introduces a second detection device, which, together with the slide rail structure, forms a closed-loop feedback control system, achieving intelligent and adaptive optimization of the charging process. The second detection device accurately acquires the precise position information of the earphone 200 within the receiving cavity 111 in real time. Based on this information, the slide rail structure dynamically adjusts the axial position of the moving coil 1142, thereby achieving real-time tracking and active alignment between the transmitting coil and the receiving coil of the earphone 200, thus improving charging efficiency. This avoids charging interruptions or sudden power drops caused by positional deviations, ensuring the high efficiency, reliability, and stability of the charging process.

[0075] For example, the elastic inner support 112 can be a non-uniform hardness elastic silicone inner support, and the elastic inner support 112 can be a one-piece structure. The elastic inner support 112 can be recessed in the middle towards the bottom of the box body 110, and part or all of the first region 1121 can be located within the recessed region. The second region 1122 can be located around the recessed region.

[0076] In this embodiment of the invention, the charging case 100, by providing an elastic inner support 112 within the receiving cavity 111 of the case body 110, and setting the hardness of the second region 1122 of the elastic inner support 112 to be less than the hardness of the first region 1121, and driven by the magnetic attraction between the first magnetic component 113 and the second magnetic component 230, allows the ear hooks 220 of the earphones 200 to automatically press and embed into the soft second region 1122 during the process of placing the earphones 200 into the charging case 100. This causes the second region 1122 to deform, allowing the second region 1122 in contact with the ear hooks 220 to absorb the angle difference of the ear hooks 220 through greater local deformation. This achieves physical compatibility and adaptive clamping for the ear hooks 220 of the earphones 200 placed in the charging case 100 at different angles. This solves the cumbersome operation in related technologies where users need to manually restore the ear hooks 220 to a specific initial angle before placing them into the charging case 100 each time they charge, significantly improving ease of use and user experience.

[0077] The magnetic attraction between the first magnetic component 113 and the second magnetic component 230 primarily acts on the earphone body 210, quickly and accurately guiding and attracting the earphone body 210 to the charging position in the first area 1121, ensuring the reliability of the charging connection. Simultaneously, this magnetic attraction, combined with the elastic clamping force generated by the soft second area 1122 on the ear hook 220, achieves comprehensive and stable fixation of the earphone 200 within the charging case 100, preventing the earphone 200 from shaking inside the case 110, causing abnormal noises, or falling off.

[0078] See Figure 5As shown, the second region 1122 may include a buffer region 1123 and a contact region 1124. The buffer region 1123 is located between the first region 1121 and the contact region 1124. The hardness of the buffer region 1123 is greater than that of the contact region 1124 and less than that of the first region 1121. This creates a three-level hardness transition step on the elastic inner support 112. As an intermediate layer, the buffer region 1123 effectively eliminates the abrupt change in rigidity between the first region 1121 and the contact region 1124, allowing the stress when the ear hook 220 is pressed in to be released smoothly, avoiding material fatigue damage caused by stress concentration, and significantly improving the durability and service life of the elastic inner support 112.

[0079] Combination Figure 1 and Figure 5 As shown, the elastic inner support 112 in this embodiment can adapt to ear hooks of different shapes.

[0080] In some embodiments, the hardness of the first region is greater than 40 Shore A and less than or equal to 45 Shore A; the hardness of the buffer region is greater than 35 Shore A and less than or equal to 40 Shore A; and the hardness of the contact region is greater than 30 Shore A and less than or equal to 35 Shore A.

[0081] For example, the first region 1121 has a hardness of 45 Shore A. The buffer region 1123 has a hardness of 40 Shore A. The contact region 1124 has a hardness of 35 Shore A.

[0082] By providing precise stiffness ratios (45A°:40A°:35A°), the optimal mechanical properties of each area are determined. This ensures that the headphone body 210 receives solid support, while the ear hooks 220 provide a comfortable and soft fit.

[0083] Of course, in other embodiments, the hardness of the first region 1121 can be set to any value among 41A°, 42A°, 43A°, 44A°, and 45A°. The hardness of the buffer region 1123 can be set to any value among 36A°, 37A°, 38A°, 39A°, and 40A°. The hardness of the contact region 1124 can be set to any value among 30A°, 31A°, 32A°, 33A°, 34A°, and 35A°. Here, "A°" represents the Shore hardness unit.

[0084] In the above embodiments, the first region 1121, the buffer region 1123, and the contact region 1124 are all regions with uniform hardness.

[0085] Of course, in some other embodiments, the second region 1122 can also be a region with uneven hardness. For example, the hardness of the second region 1122 can gradually decrease from the inner region near the first region 1121 to the outer region away from the first region 1121. That is to say, the hardness of the second region 1122 is also uneven. Since the magnetic attraction is weaker for the ear hook 220 portion farther away from the earphone body 210, setting the hardness of the second region 1122, which is farther away from the first region 1121, to be less allows the end of the ear hook 220 to quickly embed into the elastic inner tray 112, so that the earphone 200 can quickly enter the charging position, improving charging efficiency.

[0086] In addition, the gradual hardness design avoids drastic hardness changes at the interface between the ear hook 220 and the inner tray, thus eliminating stress concentration points. This allows the stress in the elastic inner tray 112 to be gradually distributed over a wider area when it is repeatedly compressed and deformed by the ear hook 220, significantly reducing the problem of fatigue failure or permanent deformation of the material due to stress concentration and extending the service life of the charging case 100.

[0087] In some embodiments, the surface of the elastic inner holder 112 is provided with a gradient texture structure. By providing a gradient texture structure on the surface of the elastic inner holder 112, the friction between the elastic inner holder 112 and the surface of the ear hook 220 can be increased, preventing the earphone 200 from shifting due to shaking within the charging case 100.

[0088] For example, the first region 1121 can have a coarse texture, and the second region 1122 can have a fine texture. The coefficient of friction of the first region 1121 can be greater than that of the second region 1122. This can improve the stability of the headphone body 210.

[0089] Of course, in other embodiments, the coefficient of friction of the first region 1121 and the coefficient of friction of the second region 1122 can be set to be the same, which can also increase the coefficient of friction of the surface of the elastic inner support 112 and prevent the earphone 200 from shaking.

[0090] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0091] In the description of this utility model, it should be understood that the terms "comprising" and "having" as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0092] Unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A charging case, characterized in that, For storing earphones, the earphones include an earphone body and an ear hook connected to the earphone body; The charging case includes a box body and a box lid. The box body has a receiving cavity, and the receiving cavity has an elastic inner support. The elastic inner support includes a first region and a second region, wherein the first region is at least used to support and position the earphone body, and the second region is at least used to accommodate and hold the ear hook; The bottom of the first region is provided with a first magnetic component, which is configured to cooperate with a second magnetic component on the earphone; The hardness of the second region is less than that of the first region. When the earphone is placed in the receiving cavity for charging, the magnetic attraction between the first magnetic component and the second magnetic component drives the ear hook to adaptively press and embed itself in the second region.

2. The charging case according to claim 1, characterized in that, The hardness of the second region gradually decreases from the inner region near the first region to the outer region away from the first region.

3. The charging case according to claim 1, characterized in that, The second region includes a buffer region and a contact region; The buffer area is located between the first area and the contact area; The hardness of the buffer area is greater than that of the contact area, but less than that of the first area.

4. The charging case according to claim 3, characterized in that, The hardness of the first region is greater than 40 Shore A and less than or equal to 45 Shore A; The hardness of the buffer area is greater than 35 Shore A and less than or equal to 40 Shore A. The hardness of the contact area is greater than 30 Shore A and less than or equal to 35 Shore A.

5. The charging case according to any one of claims 1-4, characterized in that, The surface of the elastic inner support has a gradient texture structure.

6. The charging case according to any one of claims 1-4, characterized in that, The bottom of the elastic inner support is equipped with a first detection device and a prompting device; The first detection device is used to detect whether the earphone is in the charging position; The first detection device is electrically connected to the prompting device, which is used to output a prompt signal when the earphone is not in the charging position.

7. The charging case according to any one of claims 1-4, characterized in that, The first magnetic attraction component includes a ring-shaped array of magnets; The magnet array includes a plurality of first magnets and a plurality of second magnets, wherein the first magnets and the second magnets are arranged in a uniformly alternating interval; The remanence of the first magnet is higher than that of the second magnet.

8. The charging case according to claim 7, characterized in that, The first magnet and the second magnet have the same polarity; The first magnet and the second magnet have the same shape and are both fan-ring structures; The spacing between adjacent first and second magnets is between 1.5 mm and 2.5 mm.

9. The charging case according to claim 7, characterized in that, The remanence of the first magnet is between 1.2 Tesla and 1.45 Tesla, and the remanence of the second magnet is between 1.0 Tesla and 1.3 Tesla.

10. The charging case according to any one of claims 1-4, characterized in that, The box contains a contactless charging module, which corresponds to the first area; wherein... The charging module includes a fixed coil and a movable coil, which are coaxially arranged. The movable coil can be moved along the axial direction of the fixed coil via a slide rail structure.

11. The charging case according to claim 10, characterized in that, The moving coil has a range of movement within 3 millimeters.

12. The charging case according to claim 10, characterized in that, The box contains a second detection device and a control device; The second detection device and the control device are electrically connected, and the control device is connected to the slide rail structure; The second detection device is used to detect the position information of the earphone and transmit it to the control device; The control device is used to control the displacement of the moving coil through the slide rail structure according to the position information.

13. A headphone system, characterized in that, Includes earphones and a charging case as described in any one of claims 1-12, wherein the earphones are housed in the charging case.

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