Earphone box and open type headset kit

CN224863096UActive Publication Date: 2026-10-16SHENZHEN GRANDSUN ELECTRONICS CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202521372762.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-01
Publication Date
2026-10-16
Estimated Expiration
2035-07-01

AI Technical Summary

Technical Problem

其中头箍式耳机因其舒适的佩戴体验和稳定的音质表现而受到消费者青睐,但其独特的头箍结构使得传统耳机盒难以有效收纳

Benefits of technology

[0015] The open-back headphone kit provided in this application includes headphones and the aforementioned headphone case. The left and right earphones of the headphones can be placed in the corresponding earphone compartments of the headphone case. The left and right earphones can contact the elastic fasteners on the walls of the earphone compartments. For example, the earphones can generate a squeezing force with the elastic fasteners, thereby making the earphones securely stored in the headphone case.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224863096U_ABST
    Figure CN224863096U_ABST
Patent Text Reader

Abstract

The utility model relates to an earphone box and open type headset suite, earphone box includes box body, charging assembly and elastic fixing spare, the surface of box body is equipped with two earphone warehouses, charging assembly is located in the box body, and the elastic fixing spare is located on the wall surface of earphone warehouse. Open type headset suite includes headset and earphone box, and the headset includes left earphone, headband part and right earphone connected in proper order, and left earphone and right earphone are placed in two earphone warehouses respectively. The earphone box and open type headset suite provided in the application can stably store the earphone in the earphone box and keep stable charging connection.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of headphone technology, and in particular to a headphone case and an open-back headphone kit. Background Technology

[0002] In recent years, with the rapid development of wireless audio technology, headphones have become an indispensable smart device in people's daily lives, widely used in music appreciation, calls, gaming, and fitness. Headphones include wireless headphones, over-ear headphones, and headband headphones. Among them, headband headphones are favored by consumers for their comfortable wearing experience and stable sound quality, but their unique headband structure makes traditional headphone cases difficult to store effectively. Common handbag-style headphone cases are prone to shifting during carrying, even causing the headphones to detach from the charging contacts, affecting charging stability. Furthermore, the irregular shape of headband headphones requires a more precise fixing method to ensure that the headphones maintain stable contact with the charging contacts when stored. Therefore, a headphone case solution that can securely store headphones is urgently needed. Utility Model Content

[0003] Therefore, it is necessary to provide an earphone case and open-back headphone kit that can stably store the earphones in the earphone case and maintain a stable charging connection.

[0004] An embodiment of this utility model provides an earphone case, including a case body, a charging component and an elastic fixing member. Two earphone compartments are formed on the surface of the case body. The charging component is disposed inside the case body, and the elastic fixing member is disposed on the wall of the earphone compartment.

[0005] The headphone case provided in this application has a headphone compartment for holding headphones. An elastic fastener is located on the wall of the headphone compartment. When the headphones are placed in the headphone case, the elastic fastener will contact the headphones, thereby fixing the headphones in the headphone compartment and preventing them from shaking, so as to achieve the effect of stably storing the headphones in the headphone case.

[0006] In one embodiment, the elastic fastener is disposed on the side wall and / or bottom wall of the earphone compartment.

[0007] In one embodiment, there are multiple elastic fasteners, which are spaced circumferentially on the side wall of the earphone compartment.

[0008] In one embodiment, the sidewall of the earphone compartment includes a plurality of sequentially connected curved surface regions along the circumferential direction, and the elastic fastener is respectively provided on at least one set of opposing curved surface regions.

[0009] In one embodiment, the elastic fastener is elongated and is disposed on the side wall of the earphone compartment and extends circumferentially along the earphone compartment.

[0010] In one embodiment, the sidewall of the earphone compartment forms a first step, and the elastic fastener is disposed in the area of ​​the sidewall away from the bottom wall of the earphone compartment relative to the first step.

[0011] In one embodiment, the elastic fastener is made of silicone.

[0012] In one embodiment, the charging assembly includes a battery and two electrical contacts fixed to the bottom wall of the earphone compartment and exposed in the earphone compartment, the electrical contacts being electrically connected to the battery; The earphone case also includes a magnetic clasp, which is disposed inside the case and between the two electrical contacts.

[0013] In one embodiment, the surface of the housing is further provided with an ear hook groove, one end of which is connected to the earphone compartment and the other end extends to the side wall of the housing.

[0014] An open-back headphone kit includes headphones and the aforementioned headphone case. The headphones include a left earphone, a headband, and a right earphone connected in sequence, with the left earphone and the right earphone respectively placed in the two headphone cases.

[0015] The open-back headphone kit provided in this application includes headphones and the aforementioned headphone case. The left and right earphones of the headphones can be placed in the corresponding earphone compartments of the headphone case. The left and right earphones can contact the elastic fasteners on the walls of the earphone compartments. For example, the earphones can generate a squeezing force with the elastic fasteners, thereby making the earphones securely stored in the headphone case. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a partial structural schematic diagram of an open-back headphone kit provided in an embodiment of this application; Figure 2 This is a schematic diagram of a partial structure of a box provided in an embodiment of this application; Figure 3 This is a schematic diagram of a partial structure of a box provided in an embodiment of this application; Figure 4 This is a schematic diagram of a partial structure of a box provided in an embodiment of this application; Figure 5 This is a schematic diagram of a partial structure of a box provided in an embodiment of this application; Figure 6 This is a schematic diagram of a partial structure of a box provided in an embodiment of this application; Figure 7This is a schematic diagram of a partial structure of a box provided in an embodiment of this application; Figure 8 for Figure 7 Enlarged view of the dashed line area; Figure 9 This is a schematic diagram of a partial structure of a box provided in an embodiment of this application; Figure 10 This is a partial structural schematic diagram of an open-back headphone kit provided in an embodiment of this application.

[0017] Reference numerals: Earphone case 10; Case body 20; Earphone compartment 21; Side wall 211; First step 211a; Bottom wall 212; Curved area 213; Ear hook slot 22; Electrical contact 31; Elastic fastener 40; Magnetic fastener 50; Headband 61. Detailed Implementation

[0018] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] In this utility model, unless otherwise explicitly 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0022] In recent years, with the rapid development of wireless audio technology, headphones have become an indispensable smart device in people's daily lives, widely used in music appreciation, calls, gaming, sports and fitness, and other scenarios. Headphones include wireless headphones, over-ear headphones, and headband headphones. Among them, headband headphones are favored by consumers for their comfortable wearing experience and stable sound quality, but their unique headband structure makes traditional headphone cases difficult to store effectively. Common handbag-style headphone cases are prone to headphone displacement during carrying, even causing them to detach from the charging contacts, affecting charging stability. In addition, the irregular shape of headband headphones requires a more precise fixing method to ensure that the headphones maintain stable contact with the charging contacts when stored.

[0023] Currently, most headphone charging cases use magnets to hold the earbuds in place for charging. However, with the continuous development of technology, people have increasingly higher demands for headphone comfort. Besides aesthetics, headphone size and weight have a significant impact on comfort. To reduce weight and size, the design must minimize the number of components, which means eliminating some non-essential parts, such as the magnets or auxiliary components used for holding the earbuds in place. For example, to reduce the overall size of the earbuds, the charging magnets inside must be very small, which can lead to instability when the earbuds are not securely held in the charging case. Therefore, there is a pressing need for a headphone charging case solution that provides stable storage and improves the user experience.

[0024] To address the issues of unstable storage of the earphones within the charging case, leading to movement, interference with charging, and poor contact, etc., [refer to...]. Figures 1-10 In an embodiment of this utility model, an earphone case 10 is provided. The earphone case 10 includes a case body 20, a charging component and an elastic fixing member 40. Two earphone compartments 21 are formed on the surface of the case body 20. The charging component is disposed inside the case body 20 and the elastic fixing member 40 is disposed on the wall of the earphone compartment 21.

[0025] Specifically, to address the aforementioned issues, in this embodiment, the earphone case 10 includes a case body 20, a charging assembly, and an elastic fixing member 40. The case body 20 is used to hold the earphones, which can be charged within the case body 20. Specifically, the surface of the case body 20 has two earphone compartments 21, which correspond to the left and right earphones respectively. Typically, the left earphone is placed in the left earphone compartment 21, and the right earphone is placed in the right earphone compartment 21. The charging assembly is located inside the case body 20 and is used to charge the earphones.

[0026] refer to Figures 2 to 6 To ensure the earphones are stably placed in the earphone case 10, the earphone case 10 provided in this application is provided with an elastic fixing member 40. The elastic fixing member 40 is disposed on the wall surface of the earphone compartment 21. It should be noted that the wall surface here includes, but is not limited to, the side wall 211, the bottom wall 212, and the connection area between the side wall 211 and the bottom wall 212 of the earphone compartment 21. Specifically, in some embodiments, the elastic fixing member 40 can be provided on the side wall 211 of the earphone compartment 21. The elastic fixing member 40 on the side wall 211 can apply pressure to the earphone side wall to stably hold the earphones. In other embodiments, the elastic fixing member 40 can also be provided on the bottom wall 212 of the earphone compartment 21. The elastic fixing member 40 on the bottom wall 212 can provide adaptive clamping. If the bottom of the earphone has charging contacts, the elastic fixing member 40 can ensure that the earphone contacts are tightly fitted with the electrical contacts 31 of the earphone compartment 21, avoiding poor charging due to loosening, thereby maintaining a stable charging connection for the earphones. In some embodiments, elastic fasteners 40 can be provided on both the side wall 211 and the bottom wall 212 of the earphone case 21. In this case, the elastic fasteners 40 can apply an upward elastic force to the bottom of the earphone, forming a bidirectional clamping effect with the fasteners on the side wall 211, preventing the earphone from wobbling up and down during movement and ensuring the earphone is stably stored in the earphone case 10. Simultaneously, the above-mentioned arrangement can also improve the shock absorption function of the earphone case 10. For example, when the earphone case 10 is dropped or subjected to vibration, the elastic fasteners 40 at the bottom can absorb impact energy, reducing direct impact on the earphone and protecting internal components (such as speakers, circuits, etc.). If the earphone case 21 needs to be dustproof and waterproof, the elastic fasteners 40 can fill the gap between the earphone and the earphone case 21, improving the seal while maintaining the stability of the earphone. In addition, the elastic fastener 40 on the side wall 211 can assist in positioning. When the user opens the headphone case 10, the rebound force of the bottom elastic fastener 40 can slightly lift the headphones, making them partially exposed in the headphone compartment 21, which is convenient for the user to take out. It can also prevent the headphones from being stuck to the bottom of the headphone compartment 21 due to vacuum adsorption or sweat, which would make it difficult to take out.

[0027] Specifically, in this embodiment, the elastic fastener 40 has a certain degree of resilience. The material of the elastic fastener 40 can be selected according to different needs. The elastic fastener 40 can be made of silicone, which has the advantages of high elasticity, wear resistance, anti-slip properties, and high temperature resistance. The elastic fastener 40 can also adopt a composite structure of spring and soft rubber, which can provide stronger resilience. The elastic fastener 40 can also be made of other materials that can stably place the earphones in the earphone compartment 21.

[0028] To improve the stability of the earphones placed inside the earphone case 10, the number of elastic fasteners 40 can be increased. Specifically, multiple elastic fasteners 40 can be arranged circumferentially on the side wall 211 of the earphone case 21. The multiple elastic fasteners 40 surrounding the earphones allow for simultaneous application of elastic clamping force from different angles. This multi-point contact method effectively avoids pressure concentration problems that may occur with single-point fixing, resulting in more even force distribution on the earphones. This ensures stability and prevents deformation or wear of the earphone shell due to excessive local pressure. The elastic fasteners 40 are arranged circumferentially along the side wall 211, and their distribution density can be flexibly adjusted according to the shape and size of the earphones. For example, for a circular or elliptical earphone case 21, the fasteners can be evenly distributed to ensure that the earphones are subjected to balanced constraint forces in all directions; while for earphones with special contours, the spacing of the fasteners can be adjusted to fit the curved or angular parts of the earphones, improving the overall fit.

[0029] When the user uses the earphones, in the event of a shock or accidental drop to the earphone case 10, the multiple circumferentially distributed elastic retaining members 40 can collectively share the impact force, absorbing energy through elastic deformation and reducing the vibration transmitted to the earphones. This design not only protects the delicate internal components of the earphones from damage but also reduces the risk of the earphones shifting or becoming loose within the case. The synergistic effect of the multiple retaining members makes the insertion and removal of the earphones smoother. When inserting, the user can feel a uniform damping sensation, confirming that the earphones are securely locked in; when removing, the elastic rebound of the retaining members slightly pushes the earphones, making it easier for the user to grip. In addition, the spaced arrangement avoids the retaining members completely covering the earphone surface, ensuring the breathability of the earphone shell and preventing moisture buildup due to long-term storage. Furthermore, since different models or brands of earphones may have size differences, the multiple spaced elastic retaining members 40 can adapt to slightly different earphone outer diameters through their own elastic deformation. When the earphones are placed in the case, each retaining member can be compressed independently, automatically adjusting the clamping force, thus ensuring compatibility with various earphone sizes and improving the product's versatility.

[0030] In some embodiments, the sidewall 211 of the earphone compartment 21 includes a plurality of sequentially connected curved surface regions 213 along the circumferential direction. These curved surfaces are continuously arranged along the circumferential direction to form a complete annular inner wall structure. The combination of multiple curved surfaces can better fit the complex shape contours of various types of headphones, especially for products with irregular curved surfaces such as over-ear headphones. At least one set of opposing curved surface regions 213 are respectively provided with elastic fixing members 40. The symmetrical arrangement of fixing points can generate a balanced clamping force to ensure that the headphones maintain a stable centered position in the earphone compartment 21.

[0031] When the earphones are inserted, the two opposing elastic retaining members 40 deform simultaneously, creating a symmetrical clamping effect and effectively preventing the earphones from shifting or rotating within the earphone case 21. The curved structure provides initial guidance and positioning, guiding the earphones accurately into the predetermined position. The elastic retaining members 40, located on a specific curved area 213, provide precise support for key stress points on the earphone shell. The combination of the curved surface and the elastic members disperses contact pressure, preventing localized stress concentration from damaging the earphones. This significantly improves the stability of the earphones within the case. Whether it's slight shaking during daily use or a larger impact from an accidental drop, the structure of the curved sidewall 211 combined with the elastic retaining members 40 effectively absorbs energy, keeping the earphones firmly in place.

[0032] In some embodiments, the elastic fastener 40 can be configured as a long strip, extending circumferentially along the side wall 211 of the earphone housing 21 to form a continuous elastic support surface. Compared with traditional point-shaped or small block-shaped fasteners, this long strip-shaped structural design can provide a more uniform force distribution, avoiding deformation or wear of the earphone shell that may be caused by excessive local pressure.

[0033] When the earphones are inserted axially into the earphone case 21, the elastic retainer 40 undergoes a gradual elastic deformation following the contour of the earphone shell, providing clear operational feedback to the user. The entire placement process is smooth and natural, and the user can feel a uniform change in resistance, thus accurately judging whether the earphones are in place. When removing the earphones, the elastic retainer 40 has a uniform rebound force distribution, preventing any localized jamming. The circumferentially extending elastic retainer creates a larger contact area, which not only enhances the stability of the fit but also more effectively disperses external impact forces, providing all-around protection for the earphones. Especially when encountering vibrations during transportation or carrying, it significantly reduces the risk of displacement of the earphones within the earphone case 21. Furthermore, the elastic retainer 40 can better adapt to earphone products of different sizes, compensating for differences caused by dimensional tolerances through its own elastic deformation. This characteristic makes the product more compatible and can fit a variety of earphone models.

[0034] In some embodiments, the sidewall 211 of the earphone compartment 21 forms a first step 211a. This step structure not only serves as a positioning reference but also provides a clear stopping point during earphone insertion. Specifically, the elastic fixing member 40 is located in the area of ​​the sidewall 211 away from the bottom wall 212 of the earphone compartment 21 relative to the first step 211a, i.e., above the first step 211a. This staggered structure provides a layered fixing effect, making the earphone more securely and reliably fixed within the earphone compartment 21.

[0035] Furthermore, when the earphones are placed into the earphone case 21, they first come into contact with the upper elastic retainer 40. The elastic retainer 40 undergoes appropriate elastic deformation, guiding the earphones down the correct path. As the earphones continue to move downwards, their outer shell naturally abuts against the first step 211a, providing axial positioning. At this time, the upper elastic retainer 40 evenly wraps around the upper part of the earphones, forming a flexible fixation. When the earphones are placed in the earphone case 21, the upper elastic retainer 40 effectively absorbs lateral impact forces, while the lower stepped structure provides axial positioning. When the earphone case 10 is subjected to vibration or drops, this combined structure can protect the earphones from damage, especially for earphones with protruding parts, such as over-ear headphones.

[0036] In some embodiments, reference Figures 7 to 9 The charging assembly includes a battery and two electrical contacts 31. The electrical contacts 31 are electrically connected to the battery, which provides power for charging the earphones. The electrical contacts 31 are fixed to the bottom wall 212 of the earphone compartment 21 and are exposed in the earphone compartment 21, with their contact ends exposed on the inner surface of the compartment to form a direct mating surface with the earphone charging interface. Reliable conductivity is achieved between the battery and the electrical contacts 31 through electrical connection lines. The positive and negative terminals of the battery can be gold-plated to effectively reduce contact resistance and improve energy transfer efficiency. The electrical contacts 31 can be made of high-purity copper alloy material with a surface plating treatment, which ensures excellent conductivity and greatly enhances wear resistance and oxidation resistance.

[0037] Specifically, in this embodiment, the earphone case 10 also includes a magnetic suction component 50, which is disposed inside the case body 20 and between the two electrical contacts 31. When the earphones are brought close, a suitable magnetic attraction effect is generated. When the user is ready to store the earphones, the magnetic suction component 50 automatically guides the earphones to the charging position. The magnetic attraction provides a guiding effect, and even with one-handed operation or in low-light conditions, accurate positioning can be easily achieved. The magnetic attraction force can be adjusted according to actual needs to ensure that the earphones are securely positioned without adding extra resistance to the retrieval and placement operation. In one embodiment, the central arrangement of the magnetic suction component 50 and the charging contacts 31 on both sides form a triangular layout, ensuring the connection between the earphone charging interface and the charging contacts 31, reducing the risk of poor contact due to positional deviation. Magnetic-assisted positioning also reduces wear on mechanical contacts and effectively extends the service life of the charging interface.

[0038] In some embodiments, the surface of the housing 20 is also provided with an ear hook groove 22. One end of the ear hook groove 22 is connected to the earphone compartment 21, and the other end extends to the side wall 211 of the housing 20. The ear hook groove 22 can naturally extend from the inside of the earphone compartment 21 to the side edge of the housing 20. The through-type structure design allows the ear hook to slide in smoothly, avoiding the trouble of repeated adjustments required by traditional storage methods. For example, the inner wall of the ear hook groove 22 can adopt a slightly inclined design to form a guide slope. When the user puts in the earphone, the ear hook will automatically slide into the predetermined position along the slope. The bottom of the ear hook groove 22 can be provided with a buffer contact surface to avoid direct friction between the ear hook and hard materials. In one embodiment, the opening of the ear hook groove 22 extending to the side wall 211 adopts a flared structure to improve the error tolerance when inserting the ear hook.

[0039] The second aspect of this utility model provides an open-back headphone kit, including over-ear headphones and a headphone case 10 as described in the first aspect. The over-ear headphones include a left earphone, a headband 61, and a right earphone connected in sequence, with the left and right earphones respectively placed in two headphone compartments 21. Specifically, in this embodiment, the headband 61 can be worn on the user's head. For example, the headband 61 can adopt a structural design combining a metal inner core and a flexible outer layer material to achieve an adaptive effect on the user's head curve. It can automatically adjust its curvature when subjected to pressure from different head shapes and restore its original shape after being removed. At the same time, the outer layer is made of silicone material to form a comfortable cushioning layer and effectively distribute head pressure. In one embodiment, when a user places the headphones into the headphone case 10, they can first place the left earphone into the left earphone compartment 21. The elastic fixing member 40 on the wall of the earphone compartment 21 contacts the earphone to fix its position. At the same time, they can feel a slight magnetic attraction for automatic correction. Then, they can place the right earphone into the right earphone compartment 21. They can then check whether the ear hook structure of the headband 61 is embedded in the ear hook slot 22. Finally, they can gently press the center of the case lid with both hands to close it smoothly. The open-back headphone kit provided in this embodiment can stably store the headphones in the headphone case and maintain a stable charging connection. Since this embodiment adopts all the technical features of the headphone case 10 of the first aspect embodiment, this embodiment has all the beneficial effects brought by the first aspect embodiment, which will not be repeated here.

[0040] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An earphone case, characterized in that, The device includes a housing, a charging assembly, and elastic fasteners. The housing has two earphone compartments on its surface. The charging assembly is located inside the housing. The elastic fasteners are located on the walls of the earphone compartments. There are multiple elastic fasteners, which are spaced apart circumferentially on the side walls of the earphone compartments.

2. The earphone case according to claim 1, characterized in that, The elastic fastener is provided on the side wall and / or bottom wall of the earphone compartment.

3. The earphone case according to claim 1, characterized in that, The side wall of the earphone compartment includes a plurality of sequentially connected curved surface regions along the circumferential direction, and the elastic fasteners are respectively provided on at least one set of opposing curved surface regions.

4. The earphone case according to claim 1, characterized in that, The elastic fastener is elongated and is located on the side wall of the earphone compartment, extending circumferentially along the earphone compartment.

5. The earphone case according to claim 1, characterized in that, The side wall of the earphone compartment forms a first step, and the elastic fastener is located in the area of ​​the side wall away from the bottom wall of the earphone compartment relative to the first step.

6. The earphone case according to claim 1, characterized in that, The elastic fastener is made of silicone.

7. The earphone case according to claim 1, characterized in that, The charging assembly includes a battery and two electrical contacts, which are fixed to the bottom wall of the earphone compartment and exposed in the earphone compartment, and are electrically connected to the battery. The earphone case also includes a magnetic clasp, which is disposed inside the case and between the two electrical contacts.

8. The earphone case according to claim 7, characterized in that, The surface of the housing is also provided with an ear hook groove, one end of which is connected to the earphone compartment and the other end extends to the side wall of the housing.

9. An open-back headphone kit, characterized in that, The invention includes a headset and an earphone case as described in any one of claims 1 to 8, wherein the headset includes a left earphone, a headband, and a right earphone connected in sequence, and the left earphone and the right earphone are respectively placed in two of the earphone cases.