An earphone charging case

Abstract

This utility model discloses an earphone charging case, including a cover and a box body. The cover is formed with an upper pivot portion, and the box body includes an outer box and an inner box. The outer box has a pivot notch, and the inner box has a lower pivot portion. The upper pivot portion includes an upper pivot seat and an upper pivot seat whose shapes match the pivot notch. An upper pivot hole is formed on the upper pivot seat for a pivot to pass through. The lower pivot portion includes a lower pivot seat that mates with the upper pivot seat. A lower pivot seat protrudes from the lower pivot seat and has a lower pivot hole. The pivot passes through the upper pivot hole and the lower pivot hole, and a torsion spring is disposed between the upper pivot seat and the inner box. This utility model strengthens the pivot area structure of the charging case, improving the product's service life. Furthermore, this utility model is simple to assemble and can further improve production efficiency.

Description

Technical fields:

[0001] This utility model relates to the field of charging case technology, and specifically to an earphone charging case used for storing and charging Bluetooth earphones. Background technology:

[0002] Most wireless earbuds nowadays come with a charging case for storing and charging the earbuds. The charging case has a cavity shaped to fit the earbuds, and within this cavity are two flexible electrodes for charging. When the earbuds are placed inside the charging case, their charging electrodes contact the flexible electrodes, initiating charging. Typically, to increase the opening and closing resistance of the charging case, a torsion spring is placed at the junction of the lid and the case body. This torsion spring provides the elasticity to keep the charging case in its open or closed position.

[0003] Currently, the main method for the pivot structure of charging cases is as follows: the upper and lower pivot parts are directly molded from the cover and the shell of the case using a single piece of plastic material, and then connected by a pivot. Because the pivot structure is a major stress concentration area during use, it is prone to breakage and damage, thus limiting its lifespan.

[0004] In order to improve the service life of the earphone charging case and enhance the strength of the pivot structure, the inventors propose the following technical solution. Utility model content:

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an earphone charging case with a pivot structure that has sufficient strength and is easy to assemble.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an earphone charging case, comprising: a cover, a box body, and an elastic pivot member for pivotally connecting the cover and the box body. The cover is formed with an outwardly protruding upper pivot portion. The box body includes an outer box and an inner box that nest together. A pivot notch is provided on the outer box at a position corresponding to the upper pivot portion. A lower pivot portion is provided on the inner box at a position corresponding to the upper pivot portion. The elastic pivot member comprises: a pivot and a torsion spring. The upper pivot portion comprises: an upper pivot seat whose shape matches the pivot notch and an upper pivot seat protruding on the inner side of the upper pivot seat. An upper pivot hole is provided on the upper pivot seat for the pivot to pass through. The lower pivot portion comprises: a lower pivot seat that cooperates with the upper pivot seat. A lower pivot seat is protruding on the outer side of the lower pivot seat. A lower pivot hole is provided on the lower pivot seat for the pivot to pass through. The pivot passes through the upper pivot hole and the lower pivot hole. The torsion spring is disposed between the upper pivot seat and the inner box.

[0007] Furthermore, in the above technical solution, the upper pivot seat extends from the upper pivot seat to form a limiting protrusion. When the cover is in the maximum open state, the limiting protrusion interferes with the edge of the inner box, thus limiting the maximum opening angle of the cover.

[0008] Furthermore, in the above technical solution, the inner box is formed with an insertion edge that mates with the outer box, and a snap-fit ​​position is provided on the insertion edge; the inner wall of the outer box is formed with a snap-fit ​​element that snaps into the snap-fit ​​position.

[0009] Furthermore, in the above technical solution, a first fastening element is formed at the end of the lower pivot seat, and a first fastening position is formed on the side of the outer box along the notch. When the outer box and the inner box are nested together, the first fastening element and the first fastening position form a fastening connection.

[0010] Furthermore, in the above technical solution, a reinforcing rib is integrally formed on the outer side of the first buckle position of the outer box.

[0011] Furthermore, in the above technical solution, the end of the upper pivot seat has an upper mating surface, and the pivot notch has a lower mating surface that matches the upper mating surface. The upper mating surface and the lower mating surface are arc surfaces with the same curvature.

[0012] Furthermore, in the above technical solution, the torsion spring includes an integrally formed end, a spring tube, and a connecting part; the end is connected to the upper pivot part of the cover, and the connecting part is snapped into the inner box.

[0013] Furthermore, in the above technical solution, a torsion spring seat is formed on the upper pivot seat, and a torsion spring hole is opened on the torsion spring seat for the end of the torsion spring to be inserted.

[0014] Furthermore, in the above technical solution, the bottom surface of the inner box is provided with a card seat, and a torsion spring groove is formed on the card seat to engage with the connection part of the torsion spring.

[0015] Furthermore, in the above technical solution, the upper surface of the inner box is formed with a cavity for placing the earphone, and the card holder is located on the lower surface of the inner box and between the two cavity shells.

[0016] The present invention, by adopting the above technical solution, has the following advantages:

[0017] First, this utility model strengthens the structure of the pivot area of ​​the charging box by connecting the first latching member formed at the end of the lower pivoting seat with the first latching position on the outer box, thereby strengthening the structural strength of the pivoting position and improving the service life of the product.

[0018] Secondly, this utility model allows for direct interconnection via snap-fit ​​and plug-in methods during assembly, eliminating the need for other auxiliary equipment and processes. The entire assembly process is simple and can further improve product production efficiency. Attached image description:

[0019] Figure 1 This is a perspective view of the utility model in its open state;

[0020] Figure 2 yes Figure 1 Sectional view along line AA;

[0021] Figure 3 This is an exploded perspective view of the present invention;

[0022] Figure 4 This is an exploded perspective view of the present invention.

[0023] Figure 5 This is a perspective view of the inner box portion of this utility model. Detailed implementation method:

[0024] This utility model relates to a charging case for storing and charging earphones. (See attached image) Figures 1 to 5 As shown, the present invention includes: a cover 10, a box 20, and an elastic pivot member 30 for pivotally connecting the cover 10 and the box 20.

[0025] In this invention, the cover 10 and the box 20 are injection molded from plastic material. The cover 10 has a single-layer structure, while the box 20 has a double-layer composite structure, comprising an outer box 4 and an inner box 5 that nest together. The outer box 4 has a recessed cavity 400, and the circuit board 6, battery, and other components of the earphone charging case are disposed in the space between the outer box 4 and the inner box 5. The upper surface of the inner box 5 has a cavity 500 formed for placing the earphones.

[0026] The elastic pivot member 30 includes a pivot 31 and a torsion spring 32.

[0027] The cover 10 is provided with an upper pivot part 1, and the outer box 4 has a pivot notch 41 corresponding to the position of the upper pivot part 1. The inner box 5 has a lower pivot part 51 corresponding to the position of the upper pivot part 1. The upper pivot part 1 and the lower pivot part 51 are connected by a pivot 31. The torsion spring 32 is disposed between the upper pivot part 1 and the inner box 5, and provides torque to the cover 10 so that the cover 10 can be kept in the closed or open state.

[0028] The upper pivot joint 1 is integrally formed and located on one edge of the cover 10. The upper pivot joint 1 includes an upper pivot seat 11, an upper pivot seat 12 protruding from the inner side of the upper pivot seat 11, and a torsion spring seat 13. The shape of the upper pivot seat 11 matches the pivot notch 41, so that when the cover 10 is closed, the upper pivot seat 11 perfectly matches the pivot notch 41. Furthermore, the end of the upper pivot seat 11 has an upper mating surface 110, and the pivot notch 41 has a lower mating surface 410 that matches the upper mating surface 110. The upper mating surface 110 and the lower mating surface 410 are arc surfaces with the same curvature. This ensures that when the cover 10 is rotated open, the rotation trajectory of the upper mating surface 110 coincides with that of the lower mating surface 410, preventing interference. Moreover, when the cover 10 is closed, the upper mating surface 110 and the lower mating surface 410 can fit relatively tightly together, eliminating noticeable gaps in the charging case and improving the product's aesthetics.

[0029] The upper pivot seat 12 extends generally along the direction perpendicular to the inner side of the upper pivot base 11, and an upper pivot hole 120 is formed on the upper pivot seat 12 for the pivot 31 to pass through. A limiting protrusion 121 is formed at the end of the upper pivot seat 12. Figure 2 As shown, when the cover 10 is in the maximum open state, the limiting protrusion 121 interferes with the edge of the inner box 5, thus limiting the maximum opening angle of the cover 10.

[0030] The upper pivot seat 11 has two spaced torsion spring seats 13, and torsion spring holes 130 are formed on the torsion spring seats 13.

[0031] The nested structure of the outer box 4 and inner box 5 is as follows: The inner box 5 has a downward-facing insertion edge 50, which matches the open end of the outer box 4. A snap-fit ​​position 53 is provided on the insertion edge 50; the inner wall of the outer box 4 has a snap-fit ​​element 43 that engages with the snap-fit ​​position 53. The outer box 4 and inner box 5 are nested together through the snap-fit ​​between the snap-fit ​​position 53 and the snap-fit ​​element 43.

[0032] The inner box 5 is provided with two spaced-apart lower pivot seats 511. A lower pivot seat 512 protrudes from the outer side of each lower pivot seat 511, and a lower pivot hole 5120 is opened on the lower pivot seat 512 for a pivot 31 to pass through. The pivot 31 passes through the upper pivot hole 120 and the lower pivot hole 5120 to realize the pivot connection between the cover 10 and the box body 20.

[0033] Because the pivot structure is a major stress concentration area during use, it is prone to breakage and damage. To improve the structural strength of the pivot structure, a first latching member 511 is formed at the end of the lower pivot seat 511, and a first latching position 44 is formed on the side of the outer box 4 along the notch 41. When the outer box 4 and the inner box 5 are nested together, the first latching member 511 and the first latching position 44 form a latching connection. In this way, at the notch 41 of the outer box 4, the latching connection formed by the first latching member 511 and the first latching position 44 further strengthens the bonding strength between the outer box 4 and the inner box 5, preventing separation, cracks, or other defects caused by external forces during subsequent long-term repeated use.

[0034] In addition, to further enhance the strength of the outer box 4, a reinforcing rib 45 is integrally formed on the outside of the first snap-fit ​​position 44 of the outer box 4. The reinforcing rib 45 can be configured as a structure with a slot, and the bottom of the inner box 5 is fitted with a pin for inserting into the slot.

[0035] The torsion spring 32 includes an integrally formed end portion 321, a spring tube portion 322, and a connecting portion 323. The end portion 321 is connected to the upper pivot portion 1 of the cover 10, and the connecting portion 323 is snap-fitted into the inner box 5. Specifically, two spaced-apart torsion spring seats 13 are formed on the upper pivot portion 11. Each torsion spring seat 13 has a torsion spring hole 130 for inserting the end portion 321 of the torsion spring. In use, the two ends 321 of the torsion spring are respectively inserted into the torsion spring holes 130 of the two ends 321, and are positioned by the axial elastic force between the two ends 321.

[0036] The bottom surface of the inner box 5 is provided with a card holder 52, which is located on the lower surface of the inner box 5 and between the two outer shell cavities 500. A torsion spring groove 521 is formed on the card holder 52 to engage with the connecting part 323 of the torsion spring. During installation, the connecting part 323 is simply engaged in the torsion spring groove 521.

[0037] In use, the position of the connecting part 323 of the torsion spring 32 will not change. The end 321 and the spring tube part 322 of the torsion spring will change their phase positions as the cover 10 rotates, thereby providing a certain torque to the cover 10 and ensuring that the cover 10 is kept in the closed or open state.

[0038] This invention can be used not only in headphones but also in other electronic products. Of course, the above description is merely a specific embodiment of this invention and is not intended to limit its scope. All equivalent changes or modifications made to the structure, features, and principles described in the claims of this invention should be included within the scope of this invention.

Claims

1. An earphone charging case, comprising: The cover (10), the box (20), and the resilient pivot (30) for pivotally connecting the cover (10) and the box (20), wherein the cover (10) is formed with an outwardly protruding upper pivot portion (1), characterized in that: The box body (20) includes an outer box (4) and an inner box (5) that are nested together. A pivot notch (41) is provided on the outer box (4) at the position corresponding to the upper pivot part (1). A lower pivot part (51) is provided on the inner box (5) at the position corresponding to the upper pivot part (1). The elastic pivot member (30) includes: a pivot (31) and a torsion spring (32); The upper pivot part (1) includes: an upper pivot seat (11) whose shape matches the pivot notch (41) and an upper pivot seat (12) protruding on the inner side of the upper pivot seat (11), and an upper pivot hole (120) for the pivot (31) to pass through is provided on the upper pivot seat (12); The lower pivot part (51) includes: a lower pivot seat (511) that cooperates with the upper pivot seat (11), a lower pivot seat (512) protruding on the outer side of the lower pivot seat (511), and a lower pivot hole (5120) through which the pivot (31) passes through the lower pivot seat (512). The pivot (31) passes through the upper pivot hole (120) and the lower pivot hole (5120), and the torsion spring (32) is disposed between the upper pivot seat (1) and the inner box (5).

2. The earphone charging case according to claim 1, characterized in that: The upper pivot seat (12) extends from the upper pivot seat (1) to form a limiting protrusion (121). When the cover (10) is in the maximum open state, the limiting protrusion (121) interferes with the edge position of the inner box (5) and limits the maximum opening angle of the cover (10).

3. The earphone charging case according to claim 1, characterized in that: The inner box (5) is formed with an insertion edge (50) that mates with the outer box (4), and a snap-fit ​​position (53) is provided on the insertion edge (50); the inner wall of the outer box (4) is formed with a snap-fit ​​member (43) that snaps with the snap-fit ​​position (53).

4. The earphone charging case according to claim 1, characterized in that: The lower pivot seat (511) has a first fastener (511) at its end, and the outer box (4) has a first fastener position (44) formed along the side of the notch (41). When the outer box (4) and the inner box (5) are nested together, the first fastener (511) and the first fastener position (44) form a fastener connection.

5. The earphone charging case according to claim 4, characterized in that: A reinforcing rib (45) is integrally formed on the outside of the first snap-fit ​​position (44) of the outer box (4).

6. The earphone charging case according to claim 1, characterized in that: The upper pivot seat (11) has an upper mating surface (110) at its end, and the pivot notch (41) has a lower mating surface (410) that matches the upper mating surface (110). The upper mating surface (110) and the lower mating surface (410) are arc surfaces with the same curvature.

7. An earphone charging case according to any one of claims 1-6, characterized in that: The torsion spring (32) comprises an integrally formed end (321), a spring tube (322), and a connecting part (323); the end (321) is connected to the upper pivot part (1) of the cover (10), and the connecting part (323) is snapped into the inner box (5).

8. The earphone charging case according to claim 7, characterized in that: The upper pivot seat (11) is formed with a torsion spring seat (13), and a torsion spring hole (130) is provided on the torsion spring seat (13) for inserting the end (321) of the torsion spring.

9. The earphone charging case according to claim 7, characterized in that: The bottom surface of the inner box (5) is provided with a card holder (52), and a torsion spring groove (521) is formed on the card holder (52) to engage with the connection part (323) of the torsion spring.

10. The earphone charging case according to claim 9, characterized in that: The upper surface of the inner box (5) is formed with a cavity (500) for placing the earphone, and the card holder (52) is located on the lower surface of the inner box (5) and between the outer shells of the two cavities (500).

Images