Multi-angle flip cover structure of earphone cabin

Abstract

A multi-angle flip cover structure of an earphone cabin is used for connecting a cabin body and a cabin cover and comprises a linkage block and a lock key. The linkage block is rotatably installed on the side edge of the top of the bin body, a connecting rod which extends to the outside and is fixedly connected with the bin cover is arranged on the linkage block so that the bin cover can open or close the bin body, and a plurality of tooth grooves are further formed in the linkage block; the locking key is rotatably installed at the top of the bin body, the locking key and the bin body are in damping fit, and the locking key is provided with clamping teeth capable of being matched with the multiple tooth grooves one by one; when the locking key is located at the initial position, the clamping teeth are separated from the tooth grooves, and the bin cover can be turned over normally to complete cover opening or cover closing. In the cover opening process, when the bin cover is overturned to a proper angle, the locking key is pressed to overcome damping so as to drive the clamping teeth to be inserted into the matched tooth grooves, and it can be ensured that the bin cover stops at the current position; compared with the prior art, according to the scheme, the bin cover can be adjusted and fixed to multiple angle positions to meet the playability requirement, and the use experience is effectively improved.

Description

Technical Field

[0001] This utility model belongs to the field of headphone case technology, and in particular relates to a multi-angle flip-top structure for headphone case. Background Technology

[0002] With the maturity of wireless Bluetooth technology, TWS wireless Bluetooth earbuds have gradually become more popular. Since TWS wireless Bluetooth earbuds need to be charged frequently and are easily lost during use, an earbud case that combines storage and charging has emerged to solve these problems.

[0003] Most earphone charging cases on the market currently use a flip-top structure to open and close the case. For example, patents with application numbers 2021212647751 and 202222117214X describe the corresponding flip-top structures. However, in actual use, it has been found that this type of flip-top structure is limited, resulting in the case cover only having two states: open and closed. That is, after the case cover is flipped around the case, it cannot stop at the required angle position, which reduces playability and affects the user experience. Utility Model Content

[0004] Technical problems to be solved

[0005] This utility model provides a multi-angle flip-top structure for an earphone compartment, which can be adjusted and fixed in multiple angle positions to meet playability needs and improve the user experience.

[0006] Technical solution

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A multi-angle flip-top structure for an earphone charging case, used to connect the case body and the cover, includes a linkage block and a locking button. The linkage block is rotatably mounted on the top side of the case body, and has a connecting rod extending to the outside and fixed to the cover, so that the cover can open or close the case body. The linkage block also has multiple toothed grooves. The locking button is rotatably mounted on the top of the case body, and has a damped engagement with the case body. The locking button has locking teeth that can be individually matched with the multiple toothed grooves. When the locking button is in the initial position, the locking teeth disengage from the toothed grooves, and the cover can be flipped normally to open or close. When the cover is flipped to a suitable angle, pressing the locking button overcomes the damping, thereby driving the locking teeth to engage with the matching toothed grooves, ensuring that the cover stops at the current position.

[0009] Preferably, the linkage block has a semi-circular surface, and a plurality of the toothed grooves are arranged on the semi-circular surface, and the plurality of the toothed grooves are arranged in an array tilted in a counterclockwise direction; the locking teeth are tilted in a clockwise direction to ensure that when the locking teeth are inserted into the slot, the compartment cover cannot be flipped in a counterclockwise direction and continue to open.

[0010] Preferably, the linkage block is further provided with a guide groove, and the locking key is further provided with a reset rib. The reset rib can move in and out of the guide groove as the locking teeth are inserted into or disengaged from the tooth groove. When the cover is continuously closed by rotating it clockwise, the bottom surface of the guide groove drives the reset rib to move, thereby driving the locking key to gradually return to the initial position to complete the reset.

[0011] Preferably, the bottom surface of the guide groove is arc-shaped and seamlessly transitioned, and the bottom edge of the reset rib is chamfered to reduce friction between the reset rib and the bottom surface of the guide groove, ensuring that the reset rib can slide smoothly along the bottom surface of the guide groove.

[0012] Preferably, a first rotating shaft and a second rotating shaft are installed on the top of the compartment; the linkage block is provided with a first rotating hole that is rotatably connected to the first rotating shaft, and the locking key is provided with a second rotating hole that is rotatably connected to the second rotating shaft; the second rotating shaft and the second rotating hole are interference-fitted to provide damping between the locking key and the compartment.

[0013] Preferably, it also includes a spring pin. The side of the locking key is provided with a limiting hole and a groove. The second rotating shaft and the second rotating hole can be fitted with a clearance. The spring pin is installed in the chamber and is designed to correspond to the side of the locking key. When the locking key is in the initial position, the tip of the spring pin is inserted into the limiting hole to provide damping between the locking key and the chamber. When the locking key is pressed to overcome the damping, the tip of the spring pin disengages from the limiting hole and enters the groove to continuously provide damping.

[0014] Preferably, the waist groove is provided with a slope, which slopes upward from the bottom of the waist groove toward the limiting hole, and the tip of the elastic pin continuously abuts against the slope after entering the waist groove.

[0015] Preferably, it also includes a buckle, which is swayably mounted on the top of the compartment and located on the opposite side of the linkage block, and the buckle can be folded onto the compartment or flipped away from the compartment to expand; the buckle in the expanded state can cooperate with the compartment cover in the open state to support the mobile phone.

[0016] Preferably, the top of the compartment is further provided with a hidden groove, and the fastener has a first position folded into the hidden groove and a second position to expand and disengage from the hidden groove.

[0017] Preferably, the compartment body has a first stop and a second stop inside, and the compartment body has a third stop in the hidden groove; the linkage block has a first stop plate, and when the compartment cover is flipped to the maximum angle, the first stop plate abuts against the first stop; the lock key has a second stop plate, and when the lock key is in the initial position, the second stop plate abuts against the second stop; the buckle has a third stop plate, and when the buckle is in the second position, the third stop plate abuts against the third stop.

[0018] Preferably, the top of the housing is formed with a groove for placing the earphones, and an electrode for charging the earphones is provided in the groove; the interior of the housing is provided with a cavity for installing a circuit board and a battery, the circuit board is electrically connected to the electrode and the battery, and a charging port extending through the housing to the outside is installed on the circuit board.

[0019] Preferably, the compartment cover includes a cover plate and a fixing frame, and the linkage block is installed on the fixing frame; the cover plate is made of transparent material, and the fixing frame is installed on the cover plate and blocks the inner edge of the cover plate to form a transparent part on the cover plate, so as to facilitate the user to observe the top of the compartment.

[0020] (III) Beneficial Effects

[0021] This utility model provides a multi-angle flip-top structure for an earphone charging case. A linkage block is designed on the case body to enable rotatable installation of the cover. A damped locking button is designed on the case body, allowing the button to stop after rotation. The engagement between the locking teeth and grooves restricts the linkage block, ensuring the cover stops at the desired angle. Furthermore, the interlocking action between the grooves and teeth improves structural stability, allowing the cover to remain stationary more stably. Compared to existing technologies, this solution allows the cover to be adjusted and fixed at multiple angles to meet various playability needs, thus improving the user experience. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0023] Figure 1 A schematic diagram of the overall structure of this utility model is shown. Figure 1 ;

[0024] Figure 2 It shows Figure 1 Top view;

[0025] Figure 3 It shows Figure 2 AA section view;

[0026] Figure 4 It shows Figure 3 Enlarged view of point A in the middle;

[0027] Figure 5 It shows Figure 2 BB section view;

[0028] Figure 6 It shows Figure 5 Enlarged view of point B in the middle;

[0029] Figure 7 A schematic diagram of the overall structure of this utility model is shown. Figure 2 ;

[0030] Figure 8 It shows Figure 7 A sectional view;

[0031] Figure 9 It shows Figure 8 Enlarged view of point C in the middle;

[0032] Figure 10 This diagram illustrates the usage state of the present invention. Figure 1 ;

[0033] Figure 11 This diagram illustrates the usage state of the present invention. Figure 2 ;

[0034] Figure 12 A schematic diagram of the overall structure of this utility model is shown. Figure 3 ;

[0035] Figure 13 It shows Figure 12 CC section view;

[0036] Figure 14 It shows Figure 13 Enlarged view of point D in the middle;

[0037] Figure 15 It shows Figure 13 Enlarged view at point E in the middle;

[0038] Figure 16 It shows Figure 12 DD sectional view;

[0039] Figure 17 It shows Figure 16 Enlarged view at point F;

[0040] Figure 18 An exploded view of the overall structure of this utility model is shown;

[0041] Figure 19 It shows Figure 18Enlarged view of point G in the middle;

[0042] Figure 20 The schematic diagram of the linkage block and locking key of this utility model is shown. Figure 1 ;

[0043] Figure 21 The schematic diagram of the linkage block and locking key of this utility model is shown. Figure 2 .

[0044] In the diagram: 1. Compartment body, 11. First rotating shaft, 12. Second rotating shaft, 13. Hidden groove, 14. First stop, 15. Second stop, 16. Third stop, 17. Shaped groove, 18. Receiving cavity, 2. Compartment cover, 21. Cover plate, 22. Fixing frame, 210. Transparent part, 3. Linkage block, 30. Semicircular surface, 31. Tooth groove, 32. Guide groove, 33. First rotating hole, 34. First baffle, 35. Connecting rod, 4. Locking key, 41. Locking tooth, 42. Reset rib, 43. Second rotating hole, 44. Limiting hole, 45. Waist groove, 450. Slope, 46. Second baffle, 5. Spring pin, 50. Top head, 6. Buckle seat, 61. Third baffle. Detailed Implementation

[0045] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this application. It is understood that the accompanying drawings are provided for reference and illustration only, and are not intended to limit this application. The connection relationships shown in the accompanying drawings are only for clear description and do not limit the connection method.

[0046] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component, or there may be an intervening component. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be noted that, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; or as a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application.

[0047] See appendix Figure 1 - Appendix Figure 9 and attached Figure 12 - Appendix Figure 20 A multi-angle flip-top structure for an earphone charging case is used to connect the case body 1 and the case cover 2. It includes a linkage block 3 and a locking button 4. The linkage block 3 is rotatably mounted on the top side of the case body 1, and the linkage block 3 is provided with a connecting rod 35 extending to the outside and fixed to the case cover 2, so that the case cover 2 can open or close the case body 1. The linkage block 3 is also provided with multiple toothed grooves 31. The locking button 4 is rotatably mounted on the top of the case body 1, and the locking button 4 is damped to the case body 1. The locking button 4 is provided with locking teeth 41, which can be adapted to and inserted into multiple toothed grooves 31 one by one as the locking button 4 rotates.

[0048] For details, see attached. Figure 1 - Appendix Figure 9 As shown, under normal circumstances, the locking key 4 is in the initial position, the locking tooth 41 disengages from the tooth groove 31, and the compartment cover 2 can be flipped normally to open or close the cover.

[0049] As attached Figure 12 - Appendix Figure 14 As shown, during the opening process, if it is necessary to fix the compartment cover 2 in a specific position, when flipping the compartment cover 2 to a suitable angle, press the locking key 4 to overcome the damping, so as to drive the locking tooth 41 to engage with the matching tooth groove 31. Since the locking key 4 and the compartment body 1 have damping, the rotation of the linkage block 3 can be restricted, ensuring that the compartment cover 2 stops at the current position.

[0050] As attached Figure 16 - Appendix Figure 17 When it is necessary to close the lid, push the lid 2 to overcome the damping between the locking key 4 and the chamber body 1. During this process, the linkage block 3 rotates and drives the locking tooth 41 to gradually disengage from the tooth groove 31 until the lid 2 completely closes the chamber body 1. Then the locking tooth 41 completely disengages from the tooth groove 31 and releases the locking key 4 from the restriction of the linkage block 3, ensuring that the lid 2 can be opened again.

[0051] It should be noted that as the locking teeth 41 gradually disengage from the tooth groove 31, the locking key 4 rotates and moves back to the initial position. When the locking teeth 41 are completely disengaged from the tooth groove 31, the locking key 4 can be preset to return to the initial position completely or still be a certain distance away from the initial position. If the second case is preset, the user can manually turn the locking key 4 back to the initial position when opening the compartment cover 2 again. When you want to stop the compartment cover 2 at a certain angle again, press the locking key 4 again to drive the locking teeth 41 to engage with the tooth groove 31.

[0052] In summary, this utility model achieves rotatable installation of the compartment cover 2 by designing a linkage block 3 on the compartment body 1 and a damped locking key 4 on the compartment body 1, which allows the locking key 4 to stop after rotation. The linkage block 3 is restricted by the cooperation between the locking teeth 41 and the tooth groove 31, ensuring that the compartment cover 2 can stop at the required angle position. At the same time, the interlocking action between the tooth groove 31 and the locking teeth 41 improves the structural stability, allowing the compartment cover 2 to stop more stably. Compared with the prior art, this solution can adjust and fix the compartment cover 2 at multiple angle positions to meet the playability requirements and effectively improve the user experience.

[0053] See appendix Figure 12 - Appendix Figure 21 The linkage block 3 has a semi-circular surface 30, and multiple toothed grooves 31 are arranged on the semi-circular surface 30, and the multiple toothed grooves 31 are arranged in an array tilted in a counterclockwise direction; the locking teeth 41 are tilted in a clockwise direction; under this design, the usage steps of this scheme are as follows:

[0054] After flipping open the compartment cover 2, press the locking key 4 so that the locking teeth 41 slightly engage with the linkage block 3. Then close the cover to the desired stopping position (multiple preset hovering angle positions) and release the key. During this process, the locking teeth 41 on the locking key 4 will be driven by the linkage block 3 to the closest preset angle position and engage with the corresponding tooth groove 31. Since the tooth groove 31 and the locking teeth 41 face opposite directions and the tooth groove 31 is tilted counterclockwise, the locking key 4 will lock the linkage block 3 in the counterclockwise direction, preventing the compartment cover 2 from flipping counterclockwise and continuing to open. However, since the locking key 4 does not completely lock the linkage block 3 in the clockwise direction, but only relies on damping force to restrict the linkage block 3, the compartment cover 2 can still be closed if an appropriate force is applied.

[0055] Therefore, the combined use of the above structures enables the linkage block 3 to have a self-locking function in the counterclockwise direction. In some special use cases, this design can be applied to realize other functions of the product; for example, it makes it convenient for users to hold the open compartment cover 2 to show others the items on the compartment 1.

[0056] See appendix Figure 12 - Appendix Figure 21 The linkage block 3 is also provided with a guide groove 32, and the locking key 4 is also provided with a reset rib 42. The reset rib 42 can move in and out of the guide groove 32 as the locking tooth 41 is inserted into or removed from the tooth groove 31.

[0057] Specifically, when the locking key 4 is in the initial position, the reset rib 42 is located outside the guide groove 32. After the compartment cover 2 is flipped counterclockwise, if the locking key 4 is pressed, the locking tooth 41 will engage with the meshing groove 31, and the reset rib 42 will simultaneously enter the guide groove 32 and abut against the bottom surface of the guide groove 32. When the compartment cover 2 is flipped clockwise and the cover is closed, the linkage block 3 will rotate synchronously. During this process, the bottom surface of the guide groove 32 will drive the reset rib 42 to move, thereby driving the locking key 4 to gradually reset until the compartment cover 2 is completely closed and the compartment body 1 is completely closed. Then the locking tooth 41 will completely disengage from the groove 31, the reset rib 42 will also completely disengage from the guide groove 32, and the locking key 4 will completely return to the initial position to complete the reset.

[0058] In summary, the combined use of guide groove 32 and reset rib 42 enables the locking key 4 to have an automatic reset function during the closing process after being pressed, preventing the locking teeth 41 on the locking key 4 from hooking into the tooth groove 31 and hindering the normal opening and closing action of the lid. This ensures that the normal operation of the lid 2 is perfectly compatible with the multi-angle hovering function of the lid 2 without interfering with each other, thus improving the stability of the overall structure operation.

[0059] See appendix Figure 16 - Appendix Figure 21 The bottom surface of the guide groove 32 is arc-shaped and seamlessly transitioned. The bottom edge of the reset rib 42 is chamfered. This design can reduce the friction between the reset rib 42 and the bottom surface of the guide groove 32, ensuring that the reset rib 42 can slide smoothly along the bottom surface of the guide groove 32, thereby facilitating the automatic reset of the lock key 4.

[0060] See appendix Figure 1 - Appendix Figure 9 The top of the compartment 1 is equipped with a first rotating shaft 11 and a second rotating shaft 12; the linkage block 3 is provided with a first rotating hole 33 that is rotatably connected to the first rotating shaft 11, and the lock key 4 is provided with a second rotating hole 43 that is rotatably connected to the second rotating shaft 12; under this design, the rotational connection between the linkage block 3 and the lock key 4 and the compartment 1 can be realized.

[0061] See appendix Figure 14 - Appendix Figure 19 Regarding the method of setting damping between the locking key 4 and the housing 1, it can be that the second rotating shaft 12 and the second rotating hole 43 are interference-fitted to provide damping between the locking key 4 and the housing 1; or other damping components can be designed. Since there are various ways to design damping at the connection and it is relatively conventional in the mechanical field, this utility model does not limit it. In order to facilitate understanding of the solution and improve the stability of the structure, this embodiment also includes a spring pin 5. The locking key 4 is provided with a limiting hole 44 and a waist groove 45 on its side. The spring pin 5 is installed in the housing 1, and the tip 50 of the elastic pin can enter and exit the limiting hole 44 or the waist groove 45 with the rotation of the locking key 4 to continuously provide damping.

[0062] Specifically, when the locking key 4 is in the initial position, the top 50 of the spring pin 5 is inserted into the limiting hole 44 to provide damping between the locking key 4 and the housing 1. When the locking key 4 is pressed to overcome the damping, the locking key 4 rotates and causes the locking teeth 41 to approach the tooth groove 31. At this time, the top 50 of the spring pin 5 disengages from the limiting hole 44 and enters the waist groove 45, and the top 50 abuts against the waist groove 45 to continuously provide damping.

[0063] It should be noted that when the spring pin 5 is designed to work with the limiting hole 44 and the waist hole, the second rotating shaft 12 and the second rotating hole 43 can be fitted with a clearance fit or an interference fit to increase damping. This utility model does not impose any restrictions on this. On the other hand, the spring pin 5 is an existing component, so its specific structure will not be described in detail in this utility model.

[0064] See appendix Figure 6 and attached Figure 21 The waist groove 45 is provided with an upward slope 450 from the bottom of the waist groove 45 toward the limiting hole 44. The tip 50 of the elastic pin enters the waist groove 45 and continuously abuts against the slope 450.

[0065] Specifically, during the process of the locking teeth 41 approaching the tooth groove 31, the top 50 of the spring pin 5 is located at the upper end of the ramp 450. At this time, the spring pin 5 is in a compressed state to continuously apply pressure to the locking key 4, so that the locking teeth 41 on the locking key 4 can automatically find the nearest hovering angle position and engage with the corresponding tooth groove 31. After the locking teeth 41 are fully engaged with the tooth groove 31, the elastic pin releases energy and recovers, and the top 50 of the elastic pin extends fully and abuts against the lower end of the ramp 450 to provide sufficient damping, so that the locking teeth 41 tightly bite the tooth groove 31.

[0066] Similarly, when the resistance between the spring pin 5 and the ramp 450 is overcome and the cover 2 is rotated clockwise, the linkage block 3 drives the locking key 4 to reset, and the tip 50 of the elastic pin gradually disengages from the ramp 450 to return to the limiting hole 44, so that the locking key 4 can stably stop at the initial position after resetting.

[0067] Therefore, the combined use of ramp 450 and elastic pin gives the locking key 4 a spin tendency, making it easier for the locking tooth 41 to find its position and engage with the corresponding tooth groove 31, improving the continuity and stability of the overall structure operation and reducing the risk of jamming.

[0068] See appendix Figure 10 - Appendix Figure 13 The present invention also includes a buckle 6, which is swayably mounted on the top of the chamber 1 and located on the opposite side of the linkage block 3. The buckle 6 can be folded onto the chamber 1 or flipped away from the chamber 1 to expand.

[0069] Specifically, under normal circumstances, the buckle 6 is folded onto the compartment 1 to improve portability; when the compartment cover 2 is opened, the buckle 6 can be adjusted to the expanded state. The buckle 6 in the expanded state can be used with the compartment cover 2 in the open state to form a triangular support, which is convenient for supporting the mobile phone; in addition, the user can also adjust the suspension angle of the compartment cover 2 to change the support angle, thereby adjusting the orientation of the mobile phone screen.

[0070] Therefore, the combined use of the buckle 6 and the cover 2 can expand the functionality of this product, enabling it to be used as an adjustable mobile phone holder, thus enriching its functions and improving the user experience.

[0071] See appendix Figure 12 - Appendix Figure 18 The top of the compartment 1 is also provided with a hidden groove 13, and the fastener 6 has a first position that is folded into the hidden groove 13, and a second position that is expanded to disengage from the hidden groove 13.

[0072] Specifically, under normal circumstances, the buckle 6 is in the first position to avoid obstructing the closing of the cover, while also improving aesthetics and portability; when the buckle 6 is flipped to the second position, it can be used as a phone stand.

[0073] See appendix Figure 9 and attached Figure 13 - Appendix Figure 15 The compartment 1 has a first stop 14 and a second stop 15 inside, and a third stop 16 in the hidden groove 13. The linkage block 3 has a first stop 34, which abuts against the first stop 14 when the compartment cover 2 is flipped to the maximum angle. The lock key 4 has a second stop 46, which abuts against the second stop 15 when the lock key 4 is in the initial position. The buckle 6 has a third stop 61, which abuts against the third stop 16 when the buckle 6 is in the second position.

[0074] Specifically, the combined use of the first stop 14 and the first stop plate 34 can limit the maximum rotation angle of the linkage block 3 when it rotates counterclockwise, preventing the cover 2 from rotating excessively; the combined use of the second stop 15 and the second stop plate 46 can limit the maximum angle of the locking key 4 when it rotates counterclockwise, preventing the locking key 4 from rotating excessively and protruding from the top of the compartment 1; and the combined use of the third stop 16 and the third stop plate 61 can limit the maximum swing angle of the buckle 6 and provide support for the buckle 6, improving the buckle 6's ability to support the mobile phone.

[0075] Furthermore, the top of the housing 1 is formed with a groove 17 for placing earphones (not shown in the figure), and electrodes for charging the earphones (not shown in the figure) are provided in the groove 17; the interior of the housing 1 is provided with a receiving cavity 18 for mounting a circuit board (not shown in the figure) and a battery (not shown in the figure), the circuit board is electrically connected to the electrodes and the battery, and a charging port (not shown in the figure) is installed on the circuit board that runs through the housing 1 to the outside; with this design, the housing 1 serves the functions of accommodating earphones and charging earphones, and can also charge the battery through the charging port; the relevant technology is relatively conventional in the field, so the circuit structure of the relevant components will not be further described in this utility model.

[0076] See appendix Figure 7 The compartment cover 2 includes a cover plate 21 and a fixing frame 22, and a linkage block 3 is installed on the fixing frame 22. The cover plate 21 is made of transparent material, and the fixing frame 22 is installed on the cover plate 21 and covers the inner edge of the cover plate 21 to form a transparent part 210 on the cover plate 21. This design makes it convenient for users to observe the top of the compartment 1 and improves the overall aesthetics.

[0077] It should also be noted that, although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application.

Claims

1. A multi-angle flip cover structure of an earphone case, used for connecting a case body (1) and a case cover (2), characterized in that, The utility model relates to a kind of automatic closing and opening of storage box, including: Linkage block (3), the linkage block (3) is rotatably installed in the top side of the warehouse body (1), and the linkage block (3) is equipped with extension to outside and fixed connection linkage (35) of the warehouse cover (2), so that the warehouse cover (2) can open or close the warehouse body (1), the linkage block (3) is further equipped with a plurality of gear slots (31); Lock key (4), the lock key (4) is rotatably installed in the top of the warehouse body (1), and the lock key (4) is damped with the warehouse body (1) between cooperation, the lock key (4) is equipped with the pawl (41) that can be adapted to a plurality of gear slots (31) one by one; Wherein, when the lock key (4) is located in initial position, the pawl (41) is separated from the gear slot (31), the warehouse cover (2) can normally overturn to complete opening or closing;When the warehouse cover (2) is overturned to suitable angle, press the lock key (4) to overcome damping, to drive the pawl (41) to be inserted and adapted to the gear slot (31), ensure that the warehouse cover (2) stagnates in current position.

2. The multi-angle flip cover structure of an earphone case according to claim 1, wherein, The linkage block (3) is equipped with semicircular surface (30), a plurality of gear slots (31) are arranged on the semicircular surface (30), and a plurality of gear slots (31) are inclined array around counterclockwise direction;The pawl (41) is inclined around clockwise direction, to ensure that when the pawl (41) is inserted and adapted to the gear slot (31), the warehouse cover (2) cannot be overturned around counterclockwise and continue to open.

3. The multi-angle flip cover structure of earphone case according to claim 1, characterized in that, The linkage block (3) is further equipped with guide groove (32), the lock key (4) is further equipped with reset rib (42), the reset rib (42) can be inserted or separated from the gear slot (31) with the pawl (41) and correspondingly enter or exit the guide groove (32);When the warehouse cover (2) is turned around clockwise and continues to close, the bottom surface of the guide groove (32) drives the reset rib (42) to move, to drive the lock key (4) to gradually return to initial position and complete reset.

4. The multi-angle flip cover structure of earphone case according to claim 3, characterized in that, The bottom surface of the guide groove (32) is arc-shaped and seamlessly transitions, and the bottom edge of the reset rib (42) is chamfered to reduce the friction between the reset rib (42) and the bottom surface of the guide groove (32).

5. The multi-angle flip cover structure of earphone case according to claim 3, characterized in that, The first rotating shaft (11) and the second rotating shaft (12) are installed on the top of the warehouse body (1);The linkage block (3) is equipped with the first rotating hole (33) that is rotatably connected with the first rotating shaft (11), and the lock key (4) is equipped with the second rotating hole (43) that is rotatably connected with the second rotating shaft (12);The second rotating shaft (12) and the second rotating hole (43) are interference fit, so that the lock key (4) and the warehouse body (1) have damping between them.

6. The multi-angle flip cover structure of earphone case according to claim 5, characterized in that, Further comprising a spring ejector pin (5), the lock key (4) is provided with a limiting hole (44) and a waist groove (45) on the side surface, and the second rotating shaft (12) and the second rotating hole (43) can be matched with a gap; the spring ejector pin (5) is installed in the cartridge body (1) and corresponds to the side surface of the lock key (4); when the lock key (4) is in the initial position, the top head (50) of the spring ejector pin (5) is inserted into the limiting hole (44), so that the lock key (4) and the cartridge body (1) have damping; when the lock key (4) is pressed to overcome the damping, the top head (50) of the spring ejector pin (5) is separated from the limiting hole (44) and enters the waist groove (45) to continuously provide damping.

7. The multi-angle flip cover structure of earphone case according to claim 6, characterized in that, The waist groove (45) is provided with a slope (450) inside, the slope (450) is inclined upward from the bottom of the waist groove (45) to the limiting hole (44), and the top head (50) of the spring ejector pin (5) continuously abuts against the slope (450) after entering the waist groove (45).

8. The multi-angle flip cover structure of earphone case according to claim 1, characterized in that, Further comprising a buckle seat (6), the buckle seat (6) is swingably installed on the top of the cartridge body (1) and located on the opposite side of the linkage block (3), and the buckle seat (6) can be folded on the cartridge body (1) or turned away from the cartridge body (1) to expand; The buckle seat (6) in the expanded state can cooperate with the cartridge cover (2) in the open state to support the mobile phone.

9. The multi-angle flip cover structure of an earphone case according to claim 8, characterized in that, The top of the cartridge body (1) is further provided with a hidden groove (13), the buckle seat (6) has a first position folded in the hidden groove (13), and a second position expanded away from the hidden groove (13).

10. The multi-angle flip cover structure of an earphone case according to claim 9, wherein, The inside of the cartridge body (1) is provided with a first blocking opening (14) and a second blocking opening (15), and the cartridge body (1) is provided with a third blocking opening (16) in the hidden groove (13); the linkage block (3) is provided with a first blocking piece (34), and when the cartridge cover (2) is turned to the maximum angle, the first blocking piece (34) abuts against the first blocking opening (14); the lock key (4) is provided with a second blocking piece (46), and when the lock key (4) is in the initial position, the second blocking piece (46) abuts against the second blocking opening (15); the buckle seat (6) is provided with a third blocking piece (61), and when the buckle seat (6) is in the second position, the third blocking piece (61) abuts against the third blocking opening (16).

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