Box cover ejection mechanism and earphone box

Abstract

The utility model discloses a box cover pops out mechanism and earphone box belong to mechanical structure field. The box cover pops out mechanism includes fixed base, connecting seat, cover body connecting piece, elastic reset piece and spacing part. Fixed base is equipped with guide slide groove and fixed column, and the both sides sliding convex column of connecting seat is embedded in the slide groove, and cover body connecting piece is rotatively connected with connecting seat, and elastic reset piece both ends are connected fixed column and sliding convex column and are in the tensile state. When sliding convex column is driven away from fixed column by external force, spacing part applies the resistance opposite to elastic force, and after the disappearance of external force, sliding convex column slowly slides under the action of spacing part first, and after separating, fast reset realizes the phased pop -out. The earphone box applies the mechanism, and realizes the magnetic attraction steady closure and slow open quick pop -out effect of upper cover in combination with the locking assembly. The utility model solves the problem that the box cover is instantaneously opened and the impact is big, and the closure stability is poor through the cooperation of spacing part and elastic reset piece, and has the advantages of compact structure and smooth operation.

Description

Technical Field

[0001] This utility model relates to the field of mechanical structures, and in particular to a lid pop-out mechanism and an earphone case. Background Technology

[0002] With the rapid development of the wireless earphone market, traditional earphone cases use a simple flip-top structure, requiring users to manually open the lid to take out and put in the earphones. The limited opening angle of traditional earphone cases results in a small opening space in the earphone storage compartment, restricting the user's operating space when taking out and putting in the earphones. This is especially true for users with larger fingers or those wearing gloves, making it difficult to accurately grasp the small earphones and increasing the difficulty of taking them out and putting them in. Furthermore, the manual opening method is inconvenient for users holding objects with one hand, requiring both hands to complete the opening of the case and the taking out and putting in the earphones, affecting the convenience and smoothness of use. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a lid pop-out mechanism that can pop out automatically, provide sufficient operating space, and has a smooth and controllable pop-out process, as well as an earphone case including the mechanism.

[0004] The technical solution adopted by this utility model to solve its technical problem is: A lid ejection mechanism includes: a fixed base with a guide groove and a fixed post at one end of the groove; a connecting base with sliding protrusions embedded in the guide groove on both sides; a lid connector rotatably connected to the connecting base; an elastic reset member with its two ends connected to the fixed post and the sliding protrusion respectively, and normally in a stretched state; and a limiting part disposed within the guide groove. When the sliding protrusion is driven by an external force to move along the groove away from the fixed post, the limiting structure applies resistance to the protrusion in the opposite direction to the spring tension. When the external force disappears, the sliding protrusion first contacts the limiting structure under the spring tension and slowly slides away, then quickly moves to the end of the groove near the fixed post after leaving the range of the limiting structure. The maximum resistance applied by the limiting part is less than the tension of the elastic reset member.

[0005] Furthermore, the guide groove has an arc-shaped profile; the limiting part is a protruding structure extending from the inner wall of the guide groove into the groove; the guide groove includes a first end adjacent to the fixed post and a second end away from the fixed post; when the sliding protrusion is located at the second end: the direction of the resistance applied by the limiting part to the sliding protrusion forms a non-collinear angle with the direction of the pulling force of the elastic reset member on the sliding protrusion, so that the pulling force of the elastic reset member generates an effective component force to drive the sliding protrusion to move towards the first end.

[0006] Furthermore, the raised end face of the raised structure is connected to the inner wall of the guide groove by an arc-shaped curved surface transition.

[0007] Furthermore, the line connecting the center of the trajectory circle at the first end of the guide groove and the center of the trajectory circle at the second end is vertical; the line connecting the center point of the fixed column and the center of the second end is inclined; the angle between the inclined line and the vertical line is acute; and the inclined direction of the inclined line is towards the side where the limiting part is located.

[0008] Furthermore, the fixing seat forms a receiving chamber; the guide groove is disposed on the side wall of the receiving chamber; the fixing post is disposed on the side wall of the receiving chamber and is located in the region adjacent to the first end of the guide groove; the connecting seat extends into the receiving chamber and slides in cooperation with the guide groove through the sliding protrusion.

[0009] Furthermore, the elastic reset element is a spring.

[0010] An earphone case includes a case body and a top cover, and also includes the aforementioned case cover pop-out mechanism; the cover connector is fixedly connected to the top cover; the fixing base is fixedly connected to the case body; a locking assembly is provided between the top cover and the case body; when the top cover is closed, the sum of the additional closing force generated by the locking assembly and the resistance of the limiting part to the sliding protrusion is greater than the pulling force of the elastic reset member, so that the top cover remains closed.

[0011] Furthermore, the locking assembly includes a first magnetic suction member disposed on the upper cover and a second magnetic suction member disposed on the box body and correspondingly cooperating with the first magnetic suction member; the additional closing force is the magnetic attraction force generated between the first magnetic suction member and the second magnetic suction member.

[0012] Furthermore, the fixing base is provided with a connecting part, which is fixedly connected to the box body.

[0013] Furthermore, the connecting seat has a pair of opposing pivot lugs; a pivot rod passes between the pair of pivot lugs; the cover connector is pivotally connected to the connecting seat via the pivot rod; an auxiliary spring is provided on the cover connector near at least one pivot lug; the auxiliary spring is sleeved on the pivot rod; a first end of the auxiliary spring is fixedly connected to the pivot lug, and a second end abuts against the cover connector; the auxiliary spring is in a pre-compressed energy storage state, used to provide an opening auxiliary torque to the cover connector.

[0014] The beneficial effects of this utility model are: This utility model discloses a lid pop-out mechanism, including a fixed base, a connecting base, a lid connecting member, an elastic reset member, and a limiting part. The fixed base is provided with a guide groove and a fixed post. Sliding protrusions on both sides of the connecting base are embedded in the groove. The lid connecting member is rotatably connected to the connecting base. The elastic reset member is connected to the fixed post and the sliding protrusion at both ends and is in a stretched state. When the sliding protrusion is driven away from the fixed post by an external force, the limiting part applies resistance in the opposite direction to the elastic force. After the external force disappears, the sliding protrusion first slides slowly under the action of the limiting part, and then quickly resets after disengaging, achieving a staged pop-out. This mechanism is used in an earphone case, combined with a locking component, to achieve a magnetically secure closure of the lid and a slow-opening and fast-pop-out effect. This utility model solves the problems of large impact and poor closing stability when the lid pops open instantly through the synergistic action of the limiting part and the elastic reset member, and has the advantages of compact structure and smooth operation. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the installation structure of this utility model; Figure 2 yes Figure 1 A side view diagram; Figure 3 This is a schematic diagram of the disassembled structure of the box lid pop-out mechanism of this utility model; Figure 4 This is a three-dimensional structural diagram of the fixing base of this utility model; Figure 5 This is a side view of the fixing base of this utility model.

[0017] in, 100. Box body; 200. Top cover; 300. Fixed base; 310. Guide groove; 311. Limiting part; 312. First end; 313. Second end; 320. Fixed column; 330. Receiving chamber; 340. Connecting part; 400. Connecting seat; 410. Sliding protrusion; 420. Pivoting lug; 430. Pivoting rod; 440. Auxiliary spring; 500. Cover connector; 600. Elastic reset component. Detailed Implementation

[0018] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0019] Reference Figure 1-3 The lid pop-out mechanism of this utility model achieves a slow-opening and fast-pop-out effect of the lid through the coordinated operation of the fixed base 300, connecting base 400, lid connecting member 500, elastic reset member 600, and limiting part 311. The core of this mechanism lies in using the resistance applied by the limiting part 311 to the sliding protrusion 410, combined with the restoring force of the elastic reset member 600, so that the lid moves slowly first and then pops out quickly during the opening process, effectively solving the problems of large impact and poor user experience of traditional lids that pop open instantly.

[0020] Specifically, the fixed seat 300 is provided with a guide groove 310 and a fixed post 320 located at one end of the groove; the connecting seat 400 is provided with sliding protrusions 410 embedded in the guide groove 310 on both sides; the cover connecting member 500 is rotatably connected to the connecting seat 400; the elastic reset member 600 is connected to the fixed post 320 and the sliding protrusion 410 at both ends respectively, and is normally in a stretched state; the limiting part 311 is provided in the guide groove 310; when the sliding protrusion 410 is driven by an external force to move along the groove away from the fixed post 320, the limiting structure applies a resistance to the protrusion in the opposite direction to the spring tension; when the external force disappears: the sliding protrusion 410 first contacts the limiting structure under the action of the spring tension and slowly slides away, and after leaving the range of action of the limiting structure, it quickly moves to the end of the groove near the fixed post 320; wherein, the maximum resistance applied by the limiting part 311 is less than the tension of the elastic reset member 600.

[0021] Specifically, when the user applies external force to push the sliding protrusion 410 of the connecting seat 400 along the guide groove 310 away from the fixed post 320, the elastic reset member 600 is further stretched and stores energy. After the external force disappears, the sliding protrusion 410 begins to reset under the pulling force of the elastic reset member 600. The sliding protrusion 410 first contacts the limiting part 311 and slowly slides due to the resistance acting in the opposite direction of the elastic pulling force. After leaving the range of action of the limiting part 311, the sliding protrusion 410, freed from the resistance constraint, quickly moves to the end of the groove under the drive of the elastic pulling force, thereby realizing the phased pop-out of the cover. This not only reduces the impact force when opening but also provides a smooth operating feel, while ensuring the stability of the lid when closing.

[0022] In some embodiments, refer to Figure 3-5 The guide groove 310 has an arc-shaped profile. The arc-shaped guide groove 310 includes a first end 312 adjacent to the fixed post 320 and a second end 313 away from the fixed post 320. Its curvature causes the direction of force on the sliding protrusion 410 to change at different positions.

[0023] Reference Figure 5 The limiting part 311 is a protruding structure extending from the inner wall of the guide groove 310 into the groove. When the sliding protrusion 410 is located at the second end 313 of the groove, the resistance direction applied by the limiting part 311 to the sliding protrusion 410 forms a non-collinear angle with the pulling force direction of the elastic reset member 600, so that the pulling force of the elastic reset member 600 can generate an effective driving force, pushing the sliding protrusion 410 to move towards the first end 312. This ensures that even when the limiting part 311 applies resistance, the sliding protrusion 410 can still obtain sufficient driving force to move slowly, avoiding jamming.

[0024] Another advantage of the curved trajectory is that it can provide a smoother movement process, reduce wear and noise during sliding, and make the opening trajectory of the cover more ergonomic, thus improving the user's operating experience.

[0025] In some embodiments, refer to Figure 5 The raised end face of the protruding structure is connected to the inner wall of the guide groove 310 by a curved transition surface. First, the curved transition eliminates sharp edges and corners, avoiding sharp impacts and abnormal noises generated when the sliding protrusion 410 passes through the limiting part 311, making the movement process smoother. Second, the curved transition provides a gradual resistance characteristic, allowing the sliding protrusion 410 to gradually break free from the resistance constraint from the maximum resistance state. The whole process is smooth and continuous, avoiding the adverse effects caused by abrupt changes.

[0026] Furthermore, the arc-shaped transition structure can effectively disperse stress, reduce wear on the limiting part 311 and the sliding protrusion 410, and extend the service life of the mechanism. In practical applications, the radius of curvature of the transition arc surface can be adjusted according to specific needs. A smaller radius of curvature provides faster resistance changes and is suitable for applications that require a clear sense of gradation; a larger radius of curvature provides a smoother resistance transition and is suitable for high-end products that pursue the ultimate smooth operation.

[0027] In some embodiments, the line connecting the center of the trajectory circle at the first end 312 and the center of the trajectory circle at the second end 313 is vertical, ensuring that the cover moves mainly in the vertical direction during opening, which conforms to the user's operating habits.

[0028] The line connecting the center point of the fixed post 320 and the center of the second end 313 is designed to be inclined, and this inclined line forms an acute angle with the vertical line, with the inclined direction facing the side where the limiting part 311 is located. When the sliding protrusion 410 is located at the second end 313, the pulling force of the elastic reset member 600 is along the inclined line. Since the inclined angle is towards the limiting part 311, the pulling force can generate an effective tangential component force under the resistance of the limiting part 311, pushing the sliding protrusion 410 to move along an arc trajectory towards the first end 312. The acute angle design ensures that the effective component force is large enough to overcome the resistance of the limiting part 311 and achieve slow sliding.

[0029] In practice, the tilt angle is typically designed to be between 15° and 45°. An angle that is too small will result in insufficient effective force, making it difficult for the sliding protrusion 410 to overcome the resistance of the limiting part 311; an angle that is too large will result in an excessively short slow sliding phase, affecting the staged ejection effect. The preferred tilt angle is between 20° and 35°, within which the best mechanical performance and user experience can be obtained.

[0030] In some embodiments, refer to Figure 3 , 4 The fixed base 300 has a receiving chamber 330, and the guide groove 310 and the fixing post 320 are both disposed on the side wall of the receiving chamber 330. The receiving chamber 330 provides a compact installation space for the entire ejection mechanism, allowing the various components to be arranged in an orderly manner and avoiding mutual interference between components. The side wall-type groove allows the connecting seat 400 to extend into the chamber opening, and a stable sliding fit is formed between the sliding protrusion 410 and the guide groove 310, ensuring the accuracy and stability of the movement.

[0031] The fixing post 320 is located in the area adjacent to the first end 312 of the slide groove, so that the elastic reset member 600 is already in a certain pre-stretched state under normal conditions, providing sufficient elastic potential energy for rapid reset. At the same time, the adjacent location also shortens the length of the elastic reset member 600 and improves the compactness of the system.

[0032] In actual manufacturing, the fixed base 300 can be formed in one piece using injection molding. The receiving chamber 330, guide groove 310, and fixed column 320 can all be completed in the same mold, which ensures dimensional accuracy and reduces manufacturing costs. For applications requiring high precision, finishing can be performed after injection molding to further improve the surface quality and dimensional accuracy of the groove.

[0033] In some embodiments, the elastic reset element 600 adopts a spring structure. Compared with other elastic elements, springs have advantages such as stable elastic coefficient, long service life, and low cost. In specific implementations, different types of springs can be selected according to different application requirements: Tension springs are the most commonly used choice, as their operation is perfectly matched to the requirements of the mechanism. By adjusting parameters such as the wire diameter, number of coils, and material, the magnitude of the elastic force and the elastic coefficient can be precisely controlled. For standard headphone case applications, stainless steel tension springs with a wire diameter of 0.3-0.8mm and an effective number of coils of 8-15 are typically selected.

[0034] This case also discloses an earphone case, for reference. Figure 1 , 2 The box includes a box body 100 and a top cover 200. The cover connector 500 is fixedly connected to the top cover 200, and the fixing seat 300 is fixedly connected to the box body 100, forming a complete opening mechanism.

[0035] When the top cover 200 is closed, the additional closing force generated by the locking assembly and the resistance of the limiting part 311 against the sliding protrusion 410 form a resultant force. This resultant force is greater than the pulling force of the elastic reset member 600, thus ensuring that the top cover 200 maintains a stable closed state and preventing accidental opening. In the closed state, the system automatically achieves force balance, eliminating the need for an additional locking mechanism. When opening, the user only needs to apply a small external force to overcome the additional closing force of the locking assembly to activate the pop-out mechanism and achieve smooth opening. In practical design, the locking force is typically designed to be 1.2-2.0 times the pulling force of the elastic reset member 600, and the resistance of the limiting part 311 is designed to be 0.6-0.9 times the elastic pulling force, ensuring stability in the closed state and sensitivity during opening.

[0036] In some embodiments, the locking assembly employs a magnetic structure, including a first magnetic element disposed on the upper cover 200 and a second magnetic element disposed on the case body 100. Magnetic locking offers advantages such as rapid response, no mechanical wear, and silent operation. The first magnetic element typically uses neodymium iron boron permanent magnets, characterized by strong magnetic force and small size. Depending on the size of the headphone case, commonly used specifications are circular magnets with a diameter of 3-8mm and a thickness of 1-3mm. The second magnetic element can be a magnet of the same specification (like poles repel or unlike poles attract), or it can be a soft magnetic material such as a low-carbon steel sheet.

[0037] The strength of the magnetic force directly affects the stability of the closure and the feel of opening. Insufficient magnetic force leads to unstable closure and accidental opening; excessive magnetic force makes opening difficult and negatively impacts the user experience. By adjusting the magnet specifications, gap distance, and material selection, the magnetic force can be precisely controlled within the range of 0.5-3.0N.

[0038] In practical applications, a multi-point magnetic attraction design can also be adopted, with multiple magnetic attraction points set at different positions on the top cover 200 to provide a more uniform distribution of closing force, enhance closing stability, and avoid local stress concentration.

[0039] In some embodiments, refer to Figure 1 The fixing base 300 is fixedly connected to the box body 100 via the connecting part 340. Specifically, the connecting part 340 is a threaded hole or stud, connected to the box body 100 by screws. This method of connection is reliable, easy to maintain and replace, and suitable for products with detachable designs. Alternatively, the connecting part 340 is an elastic snap-fit ​​structure, achieving a locking connection with the box body 100 through elastic deformation. This method is simple to assemble and low in cost, but difficult to disassemble. Alternatively, the connecting part 340 is designed as a flat or curved bonding surface. This method can achieve an invisible connection and a neat appearance, but requires high precision in adhesive selection and process control. Alternatively, the connecting part 340 can be designed as a welding boss or welding surface. Modern welding processes such as ultrasonic welding and laser welding can achieve high-strength, high-precision connections.

[0040] In some embodiments, an auxiliary spring 440 system is provided at the rotatable connection 340 between the cover connector 500 and the connecting seat 400 to further optimize the cover opening performance. The auxiliary spring 440 system includes components such as a pivot lug 420, a pivot rod 430, and an auxiliary spring 440.

[0041] Reference Figure 3 A pair of opposing pivot lugs 420 provide stable rotational support for the cover connector 500. A pivot rod 430 passes between the pivot lugs 420, forming a reliable pivot axis. An auxiliary spring 440 is sleeved on the pivot rod 430, with one end fixedly connected to the pivot lug 420 and the other end abutting against the cover connector 500, and is in a pre-compressed energy storage state.

[0042] When the lid begins to rotate, the auxiliary spring 440 releases its stored elastic potential energy, providing an opening assist torque to the lid connector 500. First, the assist torque helps the lid overcome initial opening resistance, making the opening action easier; second, the auxiliary spring 440 works in conjunction with the main pop-up mechanism to provide a richer sense of force, further optimizing the user experience.

[0043] The auxiliary spring 440 is typically a compression spring, and its specifications should match those of the main elastic return element 600. The elastic coefficient of the auxiliary spring 440 is generally 30%-60% of that of the main spring, and the pre-compression is designed to be 10%-25% of the free length, ensuring that it provides adequate auxiliary torque without excessively affecting the operating characteristics of the main ejection mechanism.

[0044] The pop-out lid mechanism of this utility model can adapt to the needs of headphone case products of different specifications and grades, and provides a wealth of choices and optimization space for product design while ensuring the core technology effect.

[0045] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A lid pop-out mechanism, characterized in that, include: The fixed base is provided with a guide groove and a fixed column located at one end of the groove; The connecting seat has sliding protrusions on both sides that are embedded in the guide groove; The cover connector is rotatably connected to the connecting seat; The elastic reset component is connected to the fixed post and the sliding protrusion at both ends, and is normally in a stretched state. A limiting part is provided within the guide groove; When the sliding protrusion is driven by an external force to move along the slide groove away from the fixed post, the limiting part applies a resistance to the protrusion that is opposite to the tension of the elastic reset member. After the external force disappears: Under the tension of the elastic reset member, the sliding protrusion first contacts the limiting part and then slowly slides. After leaving the range of the limiting part, it quickly moves to the end of the slide groove near the fixed column; The maximum resistance applied by the limiting part is less than the tension of the elastic reset member.

2. The lid ejection mechanism according to claim 1, characterized in that, The guide groove has an arc-shaped profile; The limiting part is a protruding structure extending from the inner sidewall of the guide groove into the groove; The guide groove includes a first end adjacent to the fixed post and a second end away from the fixed post; When the sliding protrusion is at the second end: The direction of the resistance applied by the limiting part to the sliding protrusion forms a non-collinear angle with the direction of the pulling force of the elastic reset member on the sliding protrusion, so that the pulling force of the elastic reset member generates an effective component force to drive the sliding protrusion to move towards the first end.

3. The lid pop-out mechanism according to claim 2, characterized in that, The raised end face of the raised structure is connected to the inner sidewall of the guide groove by an arc-shaped curved surface transition.

4. The lid ejection mechanism according to claim 2, characterized in that, The line connecting the center of the trajectory circle at the first end of the guide groove and the center of the trajectory circle at the second end is a vertical line; The line connecting the center point of the fixed column and the center of the second end circle is an inclined line; The angle between the inclined line and the vertical line is an acute angle; Furthermore, the tilting direction of the inclined connecting line is towards the side where the limiting part is located.

5. The lid ejection mechanism according to claim 1, characterized in that, The mounting base has a receiving chamber; The guide groove is disposed on the side wall of the receiving chamber; The fixing column is disposed on the side wall of the receiving chamber and is located in the region adjacent to the first end of the guide groove; The connecting seat extends into the receiving cavity and slides in cooperation with the guide groove through the sliding protrusion.

6. The lid ejection mechanism according to any one of claims 1-5, characterized in that, The elastic reset element is a spring.

7. An earphone case, comprising a case body and a top cover, characterized in that, It also includes the lid ejection mechanism as described in any one of claims 1-6; The cover connector is fixedly connected to the upper cover; The mounting base is fixedly connected to the box body; A locking assembly is provided between the top cover and the box body; When the top cover is closed, the sum of the additional closing force generated by the locking assembly and the resistance of the limiting part to the sliding protrusion is greater than the tension of the elastic reset member, so that the top cover remains closed.

8. The earphone case according to claim 7, characterized in that, The locking assembly includes a first magnetic element disposed on the upper cover and a second magnetic element disposed on the box body and corresponding to and cooperating with the first magnetic element; The additional closing force is the magnetic attraction force generated between the first magnetic attractor and the second magnetic attractor.

9. The earphone case according to claim 7, characterized in that, The mounting base is provided with a connecting part, which is used to fix it to the box body.

10. The earphone case according to claim 7, characterized in that, The connector has a pair of pivot lugs disposed opposite to each other; A pivot rod passes between the pair of pivot lugs; The cover connector is pivotally connected to the connector seat via the pivot rod; An auxiliary spring is provided at a position adjacent to at least one pivot lug of the cover connector; The auxiliary spring is sleeved on the pivot rod; The first end of the auxiliary spring is fixedly connected to the pivot lug, and the second end abuts against the cover connector; The auxiliary spring is in a pre-compressed energy storage state and is used to provide an auxiliary torque for opening the cover to the cover connector.

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