Flip cover structure of earphone charging box

Abstract

The utility model discloses a kind of flip cover structures of earphone charging box, the cover of earphone charging box includes nested cooperation outer cover and inner cover;Box body includes nested cooperation outer box, middle box and inner box, and the pivot joint seat that is protruding upwards is formed in middle box edge position;The position of outer cover corresponding pivot joint seat is provided with gap, and the position of inner cover corresponding gap is provided with pivot joint seat;Pivot joint seat is stretched into gap with pivot joint seat cooperation upwards, and pivot joint is realized by pivot.The torsion spring is provided between inner cover and pivot joint seat.Wireless charging coil is located in the outer side surface of middle box vertical board.The utility model sets up in the internal space of cover body in the pivot joint combination area of cover body and box body, so it will not encroach on box body internal space, to retain enough mounting space for wireless charging coil in box body.

Description

Technical Field

[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. Additionally, to increase the opening and closing resistance of the charging case, a torsion spring is typically placed at the junction of the lid and the case body. This torsion spring provides the spring force to keep the charging case in its open or closed position.

[0003] Currently, the main method for the pivoting structure of charging cases is as follows: both the upper and lower pivoting parts are formed directly from the cover and the case shell through a one-piece molding process, and then connected by a pivot. Due to the large internal space of the charging case, the pivoting structure is usually located on the upper rear side of the case, and the torsion spring that provides damping for opening and closing the charging case is also located inside the case. This structure encounters the following problems in current charging case products.

[0004] Existing charging cases incorporate wireless charging for ease of use. However, the charging coil used for wireless charging is typically planar to maximize the magnetic field effect. Earphone charging cases are generally small, and for aesthetic reasons, their outer shells are often curved, leaving only the front, back, or bottom surfaces as suitable locations for the charging coil. The front surface usually needs to accommodate indicator lights, making it impossible to place the charging coil there. For some in-ear headphone charging cases, the bottom lacks sufficient depth, forcing the coil to be placed on the rear surface. However, this space is often occupied by pivoting structures and torsion springs. Therefore, to accommodate the wireless charging coil, the existing pivoting structure of earphone charging cases must be improved. The inventors propose the following technical solution to address this issue. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a flip-top structure for an earphone charging case. The earphone charging case with this flip-top structure provides ample space for convenient placement of electronic components such as wireless charging coils.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a flip-top structure for an earphone charging case, comprising: a cover, a box body, and a pivot for pivotally connecting the cover and the box body. The cover includes an outer cover and an inner cover that fit together in a nested manner. The box body includes an outer box, a middle box, and an inner box that fit together in a nested manner. An upwardly protruding pivot seat is formed at the edge of the middle box. A notch is provided on the outer cover at the position corresponding to the pivot seat. A pivot seat is provided on the inner cover at the position corresponding to the notch. A lower pivot hole is provided on the pivot seat for the pivot to pass through. An upper pivot hole is provided on the pivot seat for the pivot to pass through. The pivot seat extends upward into the notch and engages with the pivot seat. The pivot connection is achieved by the pivot passing through the upper and lower pivot holes.

[0007] Furthermore, in the above technical solution, the inner cover is provided with a relief groove at the position corresponding to the notch, the pivot seat is located on both sides of the relief groove, and the pivot seat extends upward through the relief groove into the notch to cooperate with the pivot seat.

[0008] Furthermore, in the above technical solution, a torsion spring is provided between the inner cover and the pivot seat. The torsion spring includes an integrally formed end, a spring tube, and a connecting part. The end is connected to the pivot seat, and the connecting part is snapped into a retainer provided on the inner cover.

[0009] Furthermore, in the above technical solution, the inner cover is formed with a left protrusion and a right protrusion for accommodating the earphone, the card holder is integrally formed between the left protrusion and the right protrusion, and the card holder is formed with a torsion spring groove for accommodating the connecting part of the torsion spring.

[0010] Furthermore, in the above technical solution, the inner side of the pivot seat is integrally formed with a torsion spring seat, and a torsion spring hole is provided on the torsion spring seat for the end of the torsion spring to be inserted.

[0011] Furthermore, in the above technical solution, a decorative piece is attached to the outer side of the pivot seat.

[0012] Furthermore, in the above technical solution, the box is equipped with a circuit device, which includes a circuit board, a battery, a wireless charging coil, and a charging interface; the middle box has a vertical plate located below the pivot seat, the battery is located on the inner side of the vertical plate, the wireless charging coil is located on the outer side of the vertical plate, and the outer side of the vertical plate is flat.

[0013] Furthermore, in the above technical solution, a vertical plate mounting position is provided on the inner wall of the outer box corresponding to the position of the vertical plate. The surface of the vertical plate mounting position is flat, and the wireless charging coil is located in the gap between the vertical plate and the vertical plate mounting position.

[0014] Furthermore, in the above technical solution, the circuit board is horizontally fixed to the bottom of the middle box, the charging interface is located below the circuit board, and a charging port is provided on the bottom surface of the outer box corresponding to the charging interface.

[0015] The present invention, by adopting the above technical solution, has the following advantages:

[0016] First, this invention changes the conventional flip-top structure of charging boxes by placing the pivotal connection area between the cover and the box body inside the cover, thus avoiding encroachment on the internal space of the box body and reserving sufficient installation space for the wireless charging coil inside the box body.

[0017] Secondly, the cover adopts a double-layer nested structure, with the pivot structure and torsion spring all placed in the interlayer space, which not only ensures the stability of the structure, but also does not affect the appearance of the cover.

[0018] Finally, the box adopts a three-layer nested structure, with the pivot structure positioned above the middle box in the middle layer. This prevents the pivot structure from encroaching on the rear side of the box, leaving sufficient space for the wireless charging coil. Meanwhile, the middle box, as the main support, is reinforced by inner and outer boxes, ensuring structural stability without affecting the box's appearance. Attached Figure Description

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

[0020] Figure 2 yes Figure 1 3D exploded view;

[0021] Figure 3 yes Figure 2 A three-dimensional exploded view from another perspective;

[0022] Figure 4 This is an exploded perspective view of the cover body in this utility model;

[0023] Figure 5 This is a cross-sectional view of the present invention with the inner box removed and the lid closed.

[0024] Figure 6 This is a cross-sectional view of the utility model in its open state after the inner box has been removed. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the accompanying drawings. In the description of the present invention, the terms "front," "rear," "upper," "lower," "inner," and "outer" are used to indicate... Figure 5 To express orientation or positional relationship based on a reference point, where "front" is... Figure 5 To the left, "back" is Figure 6The direction to the right. These are for ease of description only and are not intended to indicate or imply that the device or element referred to must have a specific orientation.

[0026] This utility model relates to a charging case for storing and charging earphones. (See attached image) Figures 1 to 6 As shown, the present invention includes: a cover 10, a box 20, and a pivot 6 for pivotally connecting the cover 10 and the box 20.

[0027] In this invention, the cover 10 and the box 20 are injection molded from plastic material. The cover 10 has a double-layer composite structure, and the box 20 has a three-layer nested structure. Specifically, the cover 10 includes a nested outer cover 1 and an inner cover 2. The box 20 includes a nested outer box 3, a middle box 4, and an inner box 5. The nesting can typically be achieved through snap-fit, nesting fixation, or ultrasonic welding.

[0028] For the cover 10, in combination Figure 4 As shown, a notch 11 is provided at the rear edge of the outer cover 1. The inner cover 2 has a left protrusion 21 and a right protrusion 22 formed on it. The inner sides of the left protrusion 21 and the right protrusion 22 form cavities for accommodating the earphone. A retainer 23 is also provided on the upper surface of the inner cover 2, which serves as a mounting base for the torsion spring 7. To ensure structural stability, the retainer 23 is integrally formed between the left protrusion 21 and the right protrusion 22, and a torsion spring groove 230 is formed on the retainer 23 to accommodate the connecting part 73 of the torsion spring 7.

[0029] The inner cover 2 is provided with a relief groove 200 at the position corresponding to the notch 11. There are two pivot seats 24, which are located on both sides of the relief groove 200 respectively. The pivot seats 24 are provided with an upper shaft hole 240 for the pivot 6 to pass through.

[0030] Combination Figure 2 , Figure 3 As shown, the outer box 3, middle box 4, and inner box 5 of the box body 20 are nested and connected sequentially from the outside to the inside. The middle box 4 serves as the main support structure, and an upwardly protruding pivot seat 41 is formed at the edge of the middle box 4. The shape and size of this pivot seat 41 correspond to the notch 11. When the charging box is in the closed state, the pivot seat 41 perfectly matches the notch 11, ensuring that there are no obvious gaps on the surface of the entire charging box, thus guaranteeing the overall aesthetics and integrity of the product appearance.

[0031] The pivot seat 41 has a lower shaft hole 410 for the pivot 6 to pass through. When the cover 10 and the box 20 are engaged, the pivot seat 41 extends upward through the relief groove 200 and into the notch 11, and engages with the pivot seat 24. The pivot 6 passes through the upper shaft hole 240 and the lower shaft hole 410 to achieve the pivot connection between the cover 10 and the box 20.

[0032] Combination Figure 2 As shown, a torsion spring seat 42 is integrally formed on the inner side of the pivot seat 41. The torsion spring seat 42 is located above the lower shaft hole 410, and a torsion spring hole 420 is provided on the torsion spring seat 42 for the end 71 of the torsion spring to be inserted.

[0033] The torsion spring 7 is disposed between the retaining seat 23 and the torsion spring seat 42 of the inner cover 2. Specifically, the torsion spring 7 includes an integrally formed end portion 71, a spring tube portion 72, and a connecting portion 73. The two ends 71 ​​of the torsion spring 7 are respectively inserted into the torsion spring holes 420 of the torsion spring seat 42, and the connecting portion 73 is engaged in the torsion spring retaining groove 230 of the retaining seat 23. Figure 5 , Figure 6 As shown, when this utility model is used, the position of the end 71 of the torsion spring 7 is relatively fixed, and the positions of the connecting part 73 and the spring tube part 72 of the torsion spring 7 will rotate as the cover 10 is flipped, thereby providing a certain torque to the cover 10 and ensuring that the cover 10 is kept in the closed or open state.

[0034] As described above, the pivoting mechanism and torsion spring structure of this utility model protrude completely into the cover 10 above the box 20, without intruding into the internal space of the box 20, thus reserving sufficient installation space for the subsequent wireless charging coil.

[0035] The circuit device in this invention is located inside the housing 20. This circuit device 8 includes: a circuit board 81, a battery 82, a wireless charging coil 83, and a charging interface 84. Its specific installation structure is as follows:

[0036] The middle box 4 has a vertical plate 43 located below the pivot seat 41. The wireless charging coil 83 is located on the outer side of the vertical plate 43, and the outer side of the vertical plate 43 is flat. In this way, the wireless charging coil 83 can be set flat.

[0037] The inner wall of the outer box 3 is provided with a vertical plate mounting position 31 corresponding to the position of the vertical plate 43. The surface of the vertical plate mounting position 31 is flat, and a limiting protrusion corresponding to the vertical plate 43 is formed around its periphery. The vertical plate 43 is positioned by the limiting protrusion. The wireless charging coil 83 is located in the gap between the vertical plate 43 and the vertical plate mounting position 31.

[0038] The lower side of the middle box 4 has a series of fixing posts, and the circuit board 81 is horizontally fixed below these fixing posts by screws in the transverse direction. The battery 82 is located above the circuit board 81 and inside the vertical plate 43. The battery 82 and the wireless charging coil 83 are safely isolated by the vertical plate 43.

[0039] The charging interface 84 is located below the circuit board 81, and a charging port is provided on the bottom surface of the outer box 3 at the position corresponding to the charging interface 84, with the charging interface 84 exposed from the charging port.

[0040] When performing wireless charging on this utility model, the rear side of the box 20 of this utility model can be placed directly in the wireless charging area. Of course, in order to improve charging efficiency, the area on the outer side of the outer box 3 corresponding to the wireless charging coil 83 should also be made into a flat surface.

[0041] Furthermore, since the pivot seat 41 requires the lower shaft hole 410 to be formed, to facilitate demolding, the lower shaft hole 410 is not directly formed. Instead, a groove is provided horizontally on the outer side of the pivot seat 41, forming the middle area of ​​the lower shaft hole 410. To maintain the overall aesthetics of the charging case, a decorative piece 44 can be attached to the outer side of the pivot seat 41. Typically, the decorative piece 44 can be set as the manufacturer's trademark or product logo.

[0042] 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. The flip-top structure of the earphone charging case includes: The lid (10), the box (20), and the pivot (6) for pivotally connecting the lid (10) and the box (20) are characterized in that: The cover (10) includes an outer cover (1) and an inner cover (2) that fit together in a nested manner; The box body (20) includes a nested outer box (3), a middle box (4) and an inner box (5), and an upwardly protruding pivot seat (41) is formed at the edge of the middle box (4); The outer cover (1) has a notch (11) at the position corresponding to the pivot seat (41), and the inner cover (2) has a pivot seat (24) at the position corresponding to the notch (11). The pivot seat (41) has a lower shaft hole (410) for the pivot (6) to pass through, and the pivot seat (24) has an upper shaft hole (240) for the pivot (6) to pass through. The pivot seat (41) extends upward into the notch (11) and cooperates with the pivot seat (24). The pivot is achieved by the pivot (6) passing through the upper shaft hole (240) and the lower shaft hole (410).

2. The flip-top structure of the earphone charging case according to claim 1, characterized in that: The inner cover (2) is provided with a relief groove (200) at the position corresponding to the notch (11). The pivot seat (24) is located on both sides of the relief groove (200). The pivot seat (41) extends upward through the relief groove (200) into the notch (11) and cooperates with the pivot seat (24).

3. The flip-top structure of the earphone charging case according to claim 1, characterized in that: A torsion spring (7) is provided between the inner cover (2) and the pivot seat (41). The torsion spring (7) includes an integrally formed end (71), a spring tube (72) and a connecting part (73). The end (71) is connected to the pivot seat (41), and the connecting part (73) is fitted into the card seat (23) provided on the inner cover (2).

4. The flip-top structure of the earphone charging case according to claim 3, characterized in that: The inner cover (2) is formed with a left protrusion (21) and a right protrusion (22) for accommodating the earphone. The card holder (23) is integrally formed between the left protrusion (21) and the right protrusion (22), and the card holder (23) is formed with a torsion spring slot (230) for accommodating the connecting part (73) in the torsion spring (7).

5. The flip-top structure of the earphone charging case according to claim 3, characterized in that: The inner side of the pivot seat (41) is integrally formed with a torsion spring seat (42), and a torsion spring hole (420) is provided on the torsion spring seat (42) for the end (71) of the torsion spring to be inserted.

6. The flip-top structure of the earphone charging case according to claim 1, characterized in that: The outer side of the pivot seat (41) is covered with a decorative piece (44).

7. The flip-top structure of the earphone charging case according to any one of claims 1-5, characterized in that: The box (20) is provided with a circuit device (8), which includes: a circuit board (81), a battery (82), a wireless charging coil (83) and a charging interface (84). The middle box (4) has a vertical plate (43) located below the pivot (41), the battery (82) is located inside the vertical plate (43), the wireless charging coil (83) is located on the outer side of the vertical plate (43), and the outer side of the vertical plate (43) is flat.

8. The flip-top structure of the earphone charging case according to claim 7, characterized in that: The inner wall of the outer box (3) is provided with a vertical plate mounting position (31) corresponding to the position of the vertical plate (43). The surface of the vertical plate mounting position (31) is flat, and the wireless charging coil (83) is located in the gap between the vertical plate (43) and the vertical plate mounting position (31).

9. The flip-top structure of the earphone charging case according to claim 7, characterized in that: The circuit board (81) is horizontally fixed at the bottom of the middle box (4), and the charging interface (84) is located below the circuit board (81). A charging port is provided on the bottom surface of the outer box (3) at the position corresponding to the charging interface (84).

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