Headphone Case

Abstract

The present application relates to an earphone case comprising: an upper housing assembly and a lower housing assembly that cover each other, forming a storage space between the upper and lower housing assemblies, the upper housing assembly having a key hole and a combination dial hole; and a combination lock assembly, the combination lock assembly comprising a key structure and a combination dial structure, the combination lock assembly being located within the upper housing assembly and having a snap-fitting structure that cooperates with the lower housing assembly. The key structure is movably disposed within the key hole, and the combination dial structure is rotatably disposed within the combination dial hole. The technical solution of the present application effectively solves the problem of earphone cases in the prior art being susceptible to being opened at will.

Description

Technical Field

[0001] The present application relates to the technical field of earphone boxes, and in particular, to an earphone box. Background Art

[0002] Headphones are a pair of transducers that receive electrical signals from a media player or receiver and convert them into audible sound waves using speakers placed close to the ears. Headphones can be detached from the media player, allowing you to listen to the audio without disturbing others. They can also block out ambient sounds, making them particularly useful in noisy environments such as recording studios, bars, travel, and sports.

[0003] Headphones are increasingly used as hearing aids, and are typically placed in a headphone case that can be opened at will, increasing the risk of the headphones being used by others and the risk of the headphones being lost. Summary of the Invention

[0004] The present application provides an earphone box to solve the problem in the prior art that the earphone box can be opened at will.

[0005] According to the present application, an earphone box is provided, comprising: an upper shell assembly and a lower shell assembly covering each other, wherein a receiving space is formed between the upper shell assembly and the lower shell assembly, and the upper shell assembly has a button hole and a password disk hole; a password lock assembly, wherein the password lock assembly comprises a button structure and a password disk structure, and the password lock assembly is located in the upper shell assembly, and the password lock assembly has a snap-fit ​​structure that cooperates with the lower shell assembly, the button structure is movably arranged in the button hole, and the password disk structure is rotatably arranged in the password disk hole.

[0006] Furthermore, the combination lock assembly includes a code adjustment rod structure, a first locking structure and a reset spring. The button structure is connected to the first end of the code adjustment rod structure, the combination disk structure is arranged on the circumferential outside of the code adjustment rod structure, the second end of the code adjustment rod structure is connected to the locking structure, and the reset spring is pressed between the upper shell assembly and the locking structure.

[0007] Furthermore, the code adjusting rod structure includes a first code adjusting rod, the first code adjusting rod includes a first code adjusting rod body and a protrusion arranged on the first code adjusting rod body, and the code disk structure is provided with a protrusion avoidance channel.

[0008] Furthermore, the code adjustment rod structure also includes a second code adjustment rod and a connecting rod, the first end of the second code adjustment rod is connected to the key structure, the first end of the connecting rod is connected to the second code adjustment rod, and the second end of the connecting rod is connected to the first code adjustment rod.

[0009] Furthermore, the return spring includes a first return spring, the first end of the connecting rod is connected between the first end of the second code adjustment rod and the second end of the second code adjustment rod, the first end of the first return spring is sleeved on the second end of the second code adjustment rod, and the second end of the first return spring is against the upper shell assembly.

[0010] Furthermore, the upper shell assembly includes an upper shell and an abutting top portion, the abutting top portion is connected to the inner wall of the upper shell, and the second end of the first return spring abuts against the abutting top portion.

[0011] Furthermore, the first locking structure includes a moving part and a hook, the moving part is connected to the second end of the first code adjustment rod, the hook is connected to the moving part, the hook is located on the side of the moving part facing the lower shell assembly, and the lower shell assembly includes a groove that cooperates with the hook.

[0012] Furthermore, the return spring also includes a second return spring, and the side of the moving part away from the first code adjustment rod has a first protrusion that cooperates with the second return spring. The upper shell assembly includes an upper shell, and the inner wall of the upper shell has a second protrusion. The first end of the second return spring is sleeved on the circumferential outside of the first protrusion, and the second end of the second return spring is sleeved on the circumferential outside of the second protrusion.

[0013] Furthermore, the password disk structure includes a first turntable and a second turntable, the first turntable is arranged on the circumferential outer side of the second turntable, the first turntable and the second turntable are provided with mutually cooperating force surfaces, the inner wall surface of the second turntable is circular, and the bump avoidance channel is provided on the inner wall surface of the second turntable.

[0014] Furthermore, the first turntable includes a turntable body and multiple force plates, both ends of each force plate are respectively connected to the inner wall surface of the turntable body, the outer wall of the second turntable is polygonal, and the surface of the force plate facing the second turntable forms a force surface with the outer surface of the second turntable.

[0015] Furthermore, a cross section perpendicular to the axis of the first turntable cuts the outer wall of the first turntable into a polygon, and different symbols are set on each partition surface of the first turntable.

[0016] Furthermore, the cipher disk structures include a plurality of convex blocks corresponding one-to-one to the plurality of cipher disk structures, and the plurality of convex blocks are arranged at intervals.

[0017] Furthermore, the gap between adjacent protrusions is greater than the width of the cipher disk structure.

[0018] Furthermore, the upper shell assembly includes an upper shell and an upper lining, the upper lining is installed on the upper shell, there is a gap between the inner wall surface of the upper shell and the upper lining, the password lock assembly is arranged between the upper shell and the upper lining, the upper lining has a snap-fit ​​structure avoidance channel, and the snap-fit ​​structure passes through the snap-fit ​​structure avoidance channel.

[0019] Furthermore, the lower shell assembly includes a lower shell and a lower liner. The lower liner is arranged in the lower shell, and the lower liner has a snap-fit ​​structure that cooperates with the password lock assembly.

[0020] Using the technical solution of this application, the earphone case is equipped with a combination lock assembly. To open the earphone case, the combination dial structure is moved to the appropriate position, and then the button structure is pressed to separate the upper and lower shell components, thereby opening the earphone case. The earphone case with a combination lock assembly effectively prevents anyone from opening the earphone case at will, thus preventing the loss of earphones. The technical solution of this application effectively avoids the problem of earphone cases being opened at will in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] Figure 1 A schematic diagram of the three-dimensional structure of an earphone box according to an embodiment of the present application is shown;

[0024] Figure 2 Shown Figure 1 A schematic diagram of the three-dimensional structure of the earphone box without the upper shell;

[0025] Figure 3 Shown Figure 2 A schematic top view of the earphone box;

[0026] Figure 4 Shown Figure 1 Schematic diagram of the internal three-dimensional structure of the earphone box;

[0027] Figure 5 Shown Figure 1 A schematic diagram of the three-dimensional structure of the code disk structure and the code adjustment rod structure of the earphone box;

[0028] Figure 6 Shown Figure 5 A schematic diagram of the three-dimensional structure of the code adjustment rod structure of the earphone box;

[0029] Figure 7 Shown Figure 5 Schematic diagram of the three-dimensional structure of the cipher disk structure.

[0030] The above drawings include the following reference numerals:

[0031] 10. Upper shell assembly; 11. Upper shell; 12. Abutment top; 121. First plate; 122. Second plate; 123. Positioning boss; 13. Upper lining; 20. Lower shell assembly; 21. Lower shell; 22. Lower lining; 30. Combination lock assembly; 31. Key structure; 32. Combination disk structure; 321. First turntable; 3211. Disk body; 3212. Force plate; 322. Second turntable; 33. Code adjustment rod structure; 331. First code adjustment rod; 3311. First code adjustment rod body; 3312. Bump; 332. Second code adjustment rod; 333. Connecting rod; 34. First engaging structure; 341. Moving part; 342. Hook; 35. Return spring; 351. First return spring; 352. Second return spring; 100. Bump avoidance channel. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs.

[0034] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways, rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0035] like Figures 1 to 7As shown, the earphone case of this embodiment includes: an upper housing assembly 10 and a lower housing assembly 20, which cover each other, and a combination lock assembly 30. A storage space is formed between the upper housing assembly 10 and the lower housing assembly 20. The upper housing assembly 10 has a button hole and a combination dial hole. The combination lock assembly 30 includes a button structure 31 and a combination dial structure 32. The combination lock assembly 30 is located within the upper housing assembly 10 and has a mutually cooperating locking structure with the lower housing assembly 20. The button structure 31 is movably disposed within the button hole, and the combination dial structure 32 is rotatably disposed within the combination dial hole.

[0036] Using the technical solution of this embodiment, the earphone case is equipped with a combination lock assembly 30. To open the earphone case, the combination dial structure 32 is moved to the appropriate position, and then the button structure 31 is pressed to separate the upper housing assembly 10 and the lower housing assembly 20. The earphone case with the combination lock assembly 30 effectively prevents anyone from opening the case at will, thus preventing the loss of the earphones. The technical solution of this embodiment effectively avoids the problem of earphone cases being opened at will in the prior art.

[0037] like Figures 2 to 4 As shown, in the technical solution of this embodiment, the combination lock assembly 30 includes a code-adjusting rod structure 33, a first engaging structure 34, and a return spring 35. The button structure 31 is connected to the first end of the code-adjusting rod structure 33, the combination disk structure 32 is disposed circumferentially outside the code-adjusting rod structure 33, and the second end of the code-adjusting rod structure 33 is connected to the engaging structure. The return spring 35 abuts between the upper housing assembly 10 and the engaging structure. The code-adjusting rod structure 33 has a relatively simple structure. Since the earphone box is not very large, a more complex structure is not suitable. The provision of the code-adjusting rod structure 33 not only meets the requirements of the combination lock function, but also reduces the overall volume. The first engaging structure 34 enables the upper housing assembly 10 and the lower housing assembly 20 to close together. The provision of the return spring 35 ensures the automatic reset of the combination lock assembly 30. The aforementioned connection can be adjacent, that is, when the button structure 31 is pushed against from the outside, the button structure 31, the code-adjusting rod structure 33, and the first engaging structure 34 can work in a coordinated manner.

[0038] like Figures 5 to 7As shown, in the technical solution of this embodiment, the code adjustment rod structure 33 includes a first code adjustment rod 331, the first code adjustment rod 331 includes a first code adjustment rod body 3311 and a protrusion 3312 arranged on the first code adjustment rod body 3311, and the code disk structure 32 is provided with a protrusion avoidance channel 100. The above structure is compact, occupies a small volume, and is easy to operate. When locking is required, the protrusion 3312 leaves the protrusion avoidance channel 100, and the code disk structure 32 is rotated, so that the protrusion 3312 is blocked by the side wall of the code disk structure 32, and the code adjustment rod structure 33 cannot move axially, that is, pressing the button structure 31 cannot drive the axial movement of the code adjustment rod structure 33, and thus the purpose of opening the earphone box cannot be achieved. When the code disk structure 32 is rotated and the protrusion 3312 corresponds to the protrusion avoidance channel 100, the button structure 31 is pressed, and the button structure 31 drives the code adjustment rod structure 33 to move axially, and the code adjustment rod structure 33 drives the first locking structure 34 to move, so that the locking structure is disengaged, and the upper shell assembly 10 and the lower shell assembly 20 are separated, and the earphone box can be opened.

[0039] like Figure 3 and Figure 6 As shown, in the technical solution of this embodiment, the code adjustment rod structure 33 also includes a second code adjustment rod 332 and a connecting rod 333. The first end of the second code adjustment rod 332 is connected to the button structure 31, the first end of the connecting rod 333 is connected to the second code adjustment rod 332, and the second end of the connecting rod 333 is connected to the first code adjustment rod 331. The structure of the second code adjustment rod 332 and the connecting rod 333 makes the setting of the code adjustment rod structure 33 more flexible. As can be seen from the figure, the structure of this embodiment avoids interference between the code adjustment rod structure 33 and other components in the earphone box. As another embodiment, only the first code adjustment rod 331 is also possible.

[0040] It should be noted that the first adjustment rod 331 of this embodiment is located on one side, which effectively avoids interference between the adjustment rod structure 33 and other components, making the headphone box smaller. In other embodiments, the first adjustment rod 331 can be located in the middle, and the second adjustment rod 332 can be located on one side, which can ensure that the force between the upper shell assembly 10 and the lower shell assembly 20 is relatively balanced.

[0041] like Figure 3 As shown, in the technical solution of this embodiment, the return spring 35 includes a first return spring 351. The first end of the connecting rod 333 is connected between the first end of the second code-adjusting rod 332 and the second end of the second code-adjusting rod 332. The first end of the first return spring 351 is sleeved on the second end of the second code-adjusting rod 332, and the second end of the first return spring 351 abuts against the upper housing assembly 10. The provision of the first return spring 351 realizes automatic reset of the code-adjusting rod structure 33.

[0042] like Figure 3 As shown, in the technical solution of this embodiment, the upper housing assembly 10 includes an upper housing 11 and an abutment portion 12. The abutment portion 12 is connected to the inner wall of the upper housing 11, and the second end of the first return spring 351 abuts against the abutment portion 12. The arrangement of the abutment portion 12 ensures that the length of the first return spring 351 is within an appropriate range. If the first return spring 351 is too long, it may easily deform or even become misaligned.

[0043] It should be noted that the top portion 12 includes a first plate 121, a second plate 122, and a positioning boss 123. The first end of the first plate 121 is fixedly connected to the inner wall of the upper shell 11, the first end of the second plate 122 is connected to the second end of the first plate 121, and the second end of the second plate 122 extends toward the first code adjustment rod 331. The first plate 121 and the second plate 122 are arranged perpendicular to each other. The first end of the positioning boss 123 is connected to the side of the second plate 122 near the first code adjustment rod 331. The second end of the first return spring 351 is sleeved on the circumferential outer side of the positioning boss, and the second end of the positioning boss is located within the first return spring 351. The first return spring 351 and the positioning boss 123 are interference fit, and the first return spring 351 and the second end of the second code adjustment rod 332 are also interference fit. The first code adjustment rod 331, the second code adjustment rod 332, and the connecting rod 333 are made of the same material and are integrally molded or welded.

[0044] like Figure 3 and Figure 4 As shown, in the technical solution of this embodiment, the first engaging structure 34 includes a movable portion 341 and a hook 342. The movable portion 341 is connected to the second end of the first code adjustment rod 331, and the hook 342 is connected to the movable portion 341. The hook 342 is located on the side of the movable portion 341 facing the lower shell assembly 20, and the lower shell assembly 20 includes a groove that cooperates with the hook 342. The above structure is relatively compact and easy to operate. It should be noted that the hook 342 includes a connecting portion and a hook body. The first end of the connecting portion is connected to the movable portion 341, and the second end of the connecting portion is connected to the hook body. The groove forms a second engaging structure, and the first engaging structure 34 and the second engaging structure cooperate to form an engaging structure. The above structure is easy to process, and the engaging structure is set by utilizing its own structure, making the structure relatively compact.

[0045] like Figure 4As shown, the movable portion 341 is a rectangular parallelepiped structure. To make it lighter, the rectangular parallelepiped structure can be hollow. As other embodiments, the movable portion 341 can be of other structures. For example, the movable portion 341 includes a top plate and a movable plate, the top plate is vertically connected to the movable plate, the second end of the first code adjustment rod 331 is connected to the first side surface of the top plate, the second return spring 352 is connected to the second side surface of the top plate, the first side surface of the top plate and the second side surface of the top plate are arranged relative to each other, and the movable plate is movably arranged on the upper lining, and the upper lining has a slideway that cooperates with the movable plate. The first engaging structure 34 can be an integral structure with the code adjustment rod structure 33, or it can be a separate structure.

[0046] like Figures 2 to 4 As shown, in the technical solution of this embodiment, the return spring 35 also includes a second return spring 352. The side of the movable portion 341 facing away from the first code adjustment rod 331 has a first protrusion that cooperates with the second return spring 352. The upper housing assembly 10 includes an upper housing 11, and the inner wall of the upper housing 11 has a second protrusion. The first end of the second return spring 352 is sleeved around the circumferential outside of the first protrusion, and the second end of the second return spring 352 is sleeved around the circumferential outside of the second protrusion. The provision of the second return spring 352 ensures a relatively balanced force on the code adjustment rod structure 33.

[0047] like Figure 5 and Figure 7 As shown, in the technical solution of this embodiment, the code disk structure 32 includes a first rotating disk 321 and a second rotating disk 322. The first rotating disk 321 is arranged on the circumferential outer side of the second rotating disk 322. The first rotating disk 321 and the second rotating disk 322 are provided with mutually cooperating force-applying surfaces. The inner wall surface of the second rotating disk 322 is circular, and the bump avoidance channel 100 is provided on the inner wall surface of the second rotating disk 322. This structure has low processing costs and is convenient to use. It should be noted that because the inner wall surface of the second rotating disk 322 has the bump avoidance channel 100, the inner wall surface of the second rotating disk 322 is not a complete circle. When setting a password in this solution, the button structure 31 is pressed, and the button structure 31 drives the code adjustment rod structure 33. The first code adjustment rod 331 is located in the protrusion avoidance channel 100 of the second turntable 322. The first turntable 321 is moved forcefully, and the second turntable 322 is restricted by the protrusion 3312 of the first code adjustment rod 331 and is fixed. The first turntable 321 rotates relative to the second turntable 322, so that the password can be reset.

[0048] like Figures 5 to 7As shown, in the technical solution of this embodiment, the first turntable 321 includes a disk body 3211 and multiple force plates 3212. The two ends of each force plate 3212 are respectively connected to the inner wall surface of the disk body 3211. The outer wall of the second turntable 322 is polygonal. The surface of the force plate 3212 facing the second turntable 322 forms a force application surface with the outer surface of the second turntable 322. This structure allows the first turntable 321 and the second turntable 322 to form a buffer. The middle portion of the force plate 3212 is suspended from the disk body. In this way, when the code disk structure 32 is rotated, there is a certain buffer when the force is applied between the first turntable 321 and the second turntable 322, which improves the hand feel. The number of force plates 3212 can be less than the number of polygons of the second turntable 322. In this embodiment, there is a vacant second turntable 322 plane between two adjacent force plates 3212.

[0049] like Figure 5 and Figure 7 As shown, in the technical solution of this embodiment, a cross-section perpendicular to the axis of the first rotating disk 321 cuts through the outer wall of the first rotating disk 321 into a polygonal shape, and each of the dividing faces of the first rotating disk 321 is provided with a different symbol. The different symbols can be numbers: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. The outer circumference of the first rotating disk 321 has 10 faces, each corresponding to a different number, thus forming a digital combination lock. In other embodiments, the different symbols can be other distinguishable symbols.

[0050] like Figures 1 to 5 As shown, in the technical solution of this embodiment, there are multiple code disk structures 32, and the protrusions 3312 include multiple codes disk structures 32 corresponding one to one, and the multiple protrusions 3312 are arranged at intervals. The provision of multiple code disk structures 32 increases the difficulty of opening the earphone box. If the earphone box needs to be opened, all multiple code disk structures 32 need to be accurately aligned. When the code disk structure 32 and the protrusions 3312 are misaligned, the code disk structure 32 rotates along the central axis of the first code adjustment rod 331. Only when the protrusion avoidance channels 100 of all code disk structures 32 correspond to the corresponding protrusions 3312 can the earphone box be unlocked. It should be noted that this embodiment uses three code disk structures 32, and there are also three protrusions 3312, and the central axis of each code disk structure 32 coincides with the central axis of the first code adjustment rod 331.

[0051] like Figure 3 As shown, in the technical solution of this embodiment, the gap between adjacent protrusions 3312 is larger than the width of the code disk structure 32. When the earphone box is locked, the two code disk structures 32 near the button structure 31 are located between the two adjacent protrusions 3312, and the code disk structure 32 can effectively avoid the protrusions 3312.

[0052] like Figure 2 Shown to Figure 4 As shown, in the technical solution of this embodiment, in the technical solution of this embodiment, the upper shell assembly 10 includes an upper shell 11 and an upper lining 13. The upper lining 13 is installed on the upper shell 11. There is a gap between the inner wall surface of the upper shell 11 and the upper lining 13. The combination lock assembly 30 is arranged between the upper shell 11 and the upper lining 13. The upper lining 13 has a snap-fit ​​structure avoidance channel, and the snap-fit ​​structure passes through the snap-fit ​​structure avoidance channel. The above structure can well protect the combination lock assembly 30. The combination lock assembly 30 is located between the upper shell 11 and the upper lining 13 to prevent the combination lock assembly 30 from being damaged by external forces or contamination by dust and other pollutants. The provision of the snap-fit ​​structure avoidance channel allows the first snap-fit ​​structure to pass through the snap-fit ​​structure avoidance channel, and such a structure is relatively compact.

[0053] like Figure 4 As shown, in the technical solution of this embodiment, the lower housing assembly 20 includes a lower housing 21 and a lower lining 22. The lower lining 22 is disposed within the lower housing 21 and has a snap-fit ​​structure that mates with the combination lock assembly 30. The provision of the lower lining 22 reduces processing costs. For example, the contour of the earphones is difficult to machine on the lower housing 21. Machining the lower lining 22 can reduce processing effort and costs. The earphone case of this embodiment can accommodate both wireless and wired earphones.

[0054] The naming of the upper shell assembly and the lower shell assembly is to distinguish the two parts and help understand the solution, rather than being limited to an upper or lower orientation. The above naming can also be the first shell assembly and the second shell assembly.

[0055] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0056] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0057] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. An earphone box, characterized in that: include: An upper shell component (10) and a lower shell component (20) covering each other, wherein an accommodation space is formed between the upper shell component (10) and the lower shell component (20), and the upper shell component (10) has a key hole and a password disk hole; A combination lock assembly (30), the combination lock assembly (30) comprising a key structure (31) and a combination disk structure (32), the combination lock assembly (30) being located in the upper housing assembly (10), the combination lock assembly (30) having a third engaging structure that cooperates with the lower housing assembly (20), the key structure (31) being movably disposed in the key hole, and the combination disk structure (32) being rotatably disposed in the combination disk hole; The combination lock assembly (30) comprises a code adjustment rod structure (33), a first engaging structure (34), a reset spring (35), and a groove, wherein the groove forms a second engaging structure, the first engaging structure (34) and the second engaging structure cooperate to form a third engaging structure, the button structure (31) is connected to the first end of the code adjustment rod structure (33), the combination disk structure (32) is sleeved on the circumferential outer side of the code adjustment rod structure (33), the second end of the code adjustment rod structure (33) is connected to the engaging structure, and the reset spring (35) abuts between the upper shell assembly (10) and the third engaging structure; The code adjustment rod structure (33) further comprises a second code adjustment rod (332) and a connecting rod (333), wherein the first end of the second code adjustment rod (332) is connected to the key structure (31), the first end of the connecting rod (333) is connected to the second code adjustment rod (332), and the second end of the connecting rod (333) is connected to the first code adjustment rod (331).

2. The earphone box according to claim 1, characterized in that: The code adjustment rod structure (33) comprises a first code adjustment rod (331), the first code adjustment rod (331) comprising a first code adjustment rod body (3311) and a protrusion (3312) arranged on the first code adjustment rod body (3311), and the code disk structure (32) is provided with a protrusion avoidance channel (100).

3. The earphone box according to claim 1, characterized in that: The return spring (35) includes a first return spring (351), a first end of the connecting rod (333) is connected between the first end of the second code adjustment rod (332) and the second end of the second code adjustment rod (332), the first end of the first return spring (351) is sleeved on the second end of the second code adjustment rod (332), and the second end of the first return spring (351) is abutted against the upper housing assembly (10).

4. The earphone box according to claim 3, characterized in that: The upper shell assembly (10) comprises an upper shell (11) and an abutting top portion (12), wherein the abutting top portion (12) is connected to the inner wall of the upper shell (11), and the second end of the first return spring (351) abuts against the abutting top portion (12).

5. The earphone box according to claim 2, characterized in that: The first engaging structure (34) comprises a moving part (341) and a hook (342), wherein the moving part (341) is connected to the second end of the first code adjustment rod (331), and the hook (342) is connected to the moving part (341), and the hook (342) is located on a side of the moving part (341) facing the lower housing assembly (20), and the lower housing assembly (20) comprises a groove that matches the hook (342).

6. The earphone box according to claim 5, characterized in that: The return spring (35) further includes a second return spring (352); the side of the movable portion (341) facing away from the first code adjustment rod (331) includes a first protrusion that cooperates with the second return spring (352); the upper shell assembly (10) includes an upper shell (11); the inner wall of the upper shell (11) includes a second protrusion; the first end of the second return spring (352) is sleeved on the circumferential outer side of the first protrusion; and the second end of the second return spring (352) is sleeved on the circumferential outer side of the second protrusion.

7. The earphone box according to claim 2, characterized in that: The cipher disk structure (32) comprises a first turntable (321) and a second turntable (322); the first turntable (321) is sleeved on the circumferential outer side of the second turntable (322); the first turntable (321) and the second turntable (322) are provided with mutually cooperating force-applying surfaces; the inner wall surface of the second turntable (322) is circular; and the convex block avoidance channel (100) is provided on the inner wall surface of the second turntable (322).

8. The earphone box according to claim 7, characterized in that: The first turntable (321) includes a disk body (3211) and a plurality of force plates (3212), the two ends of each force plate (3212) are respectively connected to the inner wall surface of the disk body (3211), the outer wall of the second turntable (322) is polygonal, and the surface of the force plate (3212) facing the second turntable (322) and the outer surface of the second turntable (322) form the force surface.

9. The earphone box according to claim 7, characterized in that: A cross section perpendicular to the axis of the first turntable (321) cuts the outer wall of the first turntable (321) into a polygon, and different symbols are set on each dividing surface of the first turntable (321).

10. The earphone box according to claim 2, characterized in that: The code disk structures (32) include a plurality of protrusions (3312), which correspond one-to-one to the plurality of code disk structures (32), and the plurality of protrusions (3312) are arranged at intervals.

11. The earphone box according to claim 10, characterized in that: The gap between adjacent protrusions (3312) is greater than the width of the code disk structure (32).

12. The earphone box according to claim 1, characterized in that: The upper shell assembly (10) comprises an upper shell (11) and an upper lining (13), wherein the upper lining (13) is mounted on the upper shell (11), and a gap is provided between the inner wall surface of the upper shell (11) and the upper lining (13), and the combination lock assembly (30) is provided between the upper shell (11) and the upper lining (13), and the upper lining (13) has a snap-fit ​​structure avoidance channel, and the third snap-fit ​​structure passes through the snap-fit ​​structure avoidance channel.

13. The earphone box according to claim 12, characterized in that: The lower shell assembly (20) comprises a lower shell (21) and a lower lining (22), wherein the lower lining (22) is arranged in the lower shell (21), and the lower lining (22) has the third engaging structure that cooperates with the combination lock assembly (30).

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