Pivot joint structure of thin-shell earphone charging box

Abstract

A thin-shell earphone charging box pivot joint structure disclosed by the present invention comprises a cover body and a box body which are in mutual pivot joint, the pivot joint structure comprises a first pivot joint piece, a second pivot joint piece, a pivot and a reinforcing plate, a cover body connecting part in the first pivot joint piece is fixedly installed between an outer cover and an inner cover, and an upper pivot joint part extends downwards from the cover body to a pivot joint gap; a box body connecting part in the second pivoting piece is fixedly mounted between the outer box and the inner box, a lower pivoting part extends upwards from the box body to the pivoting notch, and the lower pivoting part is pivoted with the upper pivoting part through a pivot; the reinforcing plate is fixed between the outer box and the inner box, and the inserting plate is upwards inserted into a lower inserting groove formed in the box body connecting part. In order to solve the problem that the shell of the earphone charging box with the double-layer composite structure is thin, the reinforcing plate is additionally arranged in the pivoting mechanism, the reinforcing plate is usually made of a metal plate, strength support is provided between the pivoting structure and the shell of the charging box, and the problem that the strength of a thin-shell charging box is insufficient can be effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of charging boxes, and particularly to a pivoting structure suitable for a thin-shell earphone charging box with a relatively thin shell. Background Art

[0002] Currently, common wireless earphones are all equipped with a charging box (charging bin) for storing and charging the earphones. A receiving cavity corresponding to the shape of the earphone is formed in the charging box of the earphone, and two elastic electrodes for contact charging are arranged in the receiving cavity. When the earphone is placed in the receiving cavity of the charging box, the charging electrode of the earphone contacts the elastic electrode for charging.

[0003] Currently, the charging box usually consists of a cover body and a box body. In order to facilitate opening the charging box, a pivoting structure is adopted between the cover body and the box body. Usually, in order to improve the opening and closing damping of the charging box, a torsion spring is usually arranged at the combination position of the cover body and the box body of the charging box. By providing elastic force through the torsion spring, the charging box can be kept in the open or closed state. For example, the utility model patent with the patent application number: 202222117214.X discloses a technical solution of "the damping flip structure of the earphone charging box". In addition, magnetic attraction is also used to keep the charging box in the closed state.

[0004] Currently, the pivoting structures of charging boxes mainly adopt the following two methods: Method 1: The upper pivoting part and the lower pivoting part for pivoting are directly integrally formed by the shell of the cover body and the box body using a plastic material, and then the upper and lower pivoting parts are connected by a pivot shaft. This method has relatively high requirements for the plastic material of the earphone box and the injection molding process to ensure that the integrally formed upper and lower pivoting parts have sufficient strength.

[0005] Method 2: The upper pivoting part and the lower pivoting part for pivoting are independently formed and then respectively fixedly connected to the cover body and the box body.

[0006] For Method 2, its injection molding process is relatively simple, and this method only requires the upper and lower pivoting parts to be made of plastic materials with sufficient strength, and the shells of the cover body and the box body only need to have sufficient thickness to provide sufficient support. However, with the increasing refinement of earphone charging boxes, current earphone charging boxes mostly adopt a double-layer composite structure, that is, the cover body and the box body of the charging box usually have an inner and outer double-layer shell structure. In this structure, the thickness of each layer of the shell is relatively thin, and the relatively thin shell is difficult to provide sufficient strength support for the pivoting structure. In addition, in some earphone charging boxes, the USB interface for charging is arranged beside the pivoting structure. Due to the existence of the USB jack, the strength of the pivoting position of the earphone shell is further reduced. Cracks and ruptures are likely to occur in the pivoting structure of the charging box due to insufficient strength.

[0007] To overcome the deficiencies of the above-mentioned Method 2, the present inventor proposes the following technical solutions. Summary of the Invention

[0008] The technical problem to be solved by the present invention lies in overcoming the deficiencies of the prior art and providing a pivotal connection structure for a thin-shell earphone charging case.

[0009] To solve the above technical problem, the present invention adopts the following technical solutions: A pivotal connection structure for a thin-shell earphone charging case, comprising: a cover body and a box body pivotally connected through a pivotal connection mechanism. The cover body includes an outer cover and an inner cover that are nested and fitted. The box body includes an outer box and an inner box that are nested and fitted. A pivotal connection notch is formed at the edge of the outer box corresponding to the pivotal connection mechanism. The pivotal connection mechanism includes: a first pivotal connection member, a second pivotal connection member, a pivot shaft, and a reinforcing plate. The first pivotal connection member includes an integrally formed cover body connection portion and an upper pivotal connection portion. The second pivotal connection member includes an integrally formed box body connection portion and a lower pivotal connection portion. The cover body connection portion in the first pivotal connection member is fixedly installed between the outer cover and the inner cover, and the upper pivotal connection portion extends downward from the cover body to the pivotal connection notch. The box body connection portion in the second pivotal connection member is fixedly installed between the outer box and the inner box, and the lower pivotal connection portion extends upward from the box body to the pivotal connection notch, and the lower pivotal connection portion is pivotally connected to the upper pivotal connection portion through the pivot shaft. The reinforcing plate is fixed between the outer box and the inner box, and it includes an integrally formed support plate and a plug-in plate. The support plate abuts against the inner wall of the outer box, and the plug-in plate is inserted upward into a lower slot formed in the box body connection portion.

[0010] Furthermore, in the above technical solution, the inner cover is formed with an upper plug-in edge that cooperates with the outer cover, and an upper snap position is provided on the upper plug-in edge. A cover body snap member that snap-fits with the upper snap position is formed on the inner wall of the outer cover.

[0011] Furthermore, in the above technical solution, an upper slot is formed at a position on the upper plug-in edge close to the pivotal connection notch. An upper plug-in portion that is inserted and cooperates with the upper slot is provided on the cover body connection portion.

[0012] Furthermore, in the above technical solution, the inner box is formed with a lower plug-in edge that cooperates with the outer box, and a lower snap position is provided on the lower plug-in edge. A box body snap member that snap-fits with the lower snap position is formed on the inner wall of the outer box.

[0013] Furthermore, in the above technical solution, a receiving member is integrally formed on the inner wall of the outer box close to the pivotal connection notch, and the receiving member is inserted upward into a lower slot formed in the box body connection portion.

[0014] Furthermore, in the above technical solution, a reinforcing rib is provided between the receiving member and the inner wall of the outer box.

[0015] Furthermore, in the above technical solution, a fixing base is also installed in the cavity between the outer box and the inner box. The fixing base includes a bottom plate fixedly connected to the outer box and a column for carrying the circuit board. A USB interface is arranged horizontally on the circuit board. The support plate in the reinforcing plate is located between the two columns, and an avoidance hole and a jack are respectively formed at the positions of the support plate and the side surface of the outer box corresponding to the USB interface.

[0016] Furthermore, in the above technical solution, a bending plate is formed at the end of the support plate in the reinforcing plate, and the bending plate is fixedly connected to the bottom plate of the fixing base.

[0017] Furthermore, in the above technical solution, a limiting rib is formed at the end of the upper pivoting portion in the first pivoting member along the axial direction, and an upper shaft hole for the pivot shaft to pass through is formed in the upper pivoting portion. Two lower pivoting portions are provided in the second pivoting member, and lower shaft holes matching the pivot shaft are formed in the lower pivoting portions. A pivoting rotation position for the limiting rib to rotate is formed between the two lower pivoting portions, and a limiting protrusion interfering with the limiting rib is arranged above the pivoting rotation position. The upper pivoting portion is located between the two lower pivoting portions, and the upper pivoting portion and the lower pivoting portions are connected by a pivot shaft.

[0018] Furthermore, in the above technical solution, fastening slots are formed at the upper side of the second pivoting member and at positions on both sides of the pivoting rotation position, and fastening blocks inserted into the fastening slots are formed at the lower insertion edge position of the inner box.

[0019] After the present invention adopts the above technical solution, the following advantages are achieved: Aiming at the problem of the thin shell of the double-layer composite structure headphone charging box, a reinforcing plate is added to the pivoting mechanism. The reinforcing plate is usually made of a metal plate, which basically does not occupy the space inside the charging box, and provides a strength support between the pivoting structure and the shell of the charging box, effectively improving the problem of insufficient strength of the thin-shell charging box.

[0020] In addition, for a charging box with a USB charging interface arranged beside the pivoting structure position, the USB charging interface passes through the middle of the reinforcing plate, and the shell of the charging box is reinforced through the reinforcing plate to ensure the strength of the thin-shell charging box.

[0021] Finally, the structure of the present invention is reasonably designed and convenient to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a perspective view of the present invention in the closed state; Figure 2 is a perspective view of the present invention in the open state; Figure 3 is an exploded perspective view of the present invention; Figure 4It is an exploded perspective view of the central connection structure part of the present invention; Figure 5 It is Figure 3 The method diagram at position A in Figure 6 It is Figure 1 The sectional view taken along the line B-B in Figure 7 It is an exploded perspective view of the cover body and the first pivot joint member in the present invention; Figure 8 It is an exploded perspective view of the box body and the pivot joint mechanism in the present invention; Figure 9 It is an exploded perspective view of the box body and the first pivot joint member in the present invention; Figure 10 It is Figure 9 The sectional view taken along the line C-C in Detailed implementation manner

[0023] Next, the preferred implementation embodiments of the present invention will be described in more detail with reference to the accompanying drawings. The direction descriptions involved in the description of the implementation embodiments are based on Figure 1 When the earphone charging case of the present invention is placed on a horizontal plane, the cover body is located above and the box body is located below.

[0024] The present invention is a charging case for storing and charging earphones. As shown in Figures 1 to 10 The present invention includes: a cover body 100, a box body 200, a pivot joint mechanism 300, a fixed seat 8 and a circuit board 9.

[0025] The cover body 100 and the box body 200 are injection molded with plastic materials, and both of them adopt a double-layer composite structure, that is, the cover body 100 includes an outer cover 1 and an inner cover 2 that are nested and fitted; the box body 200 includes an outer box 4 and an inner box 5 that are nested and fitted, and the cover body 100 and the box body 200 are pivotally connected together through the pivot joint mechanism 300.

[0026] In the cover body 100, the inner cover 2 is formed with an upper insertion edge 20 that cooperates with the outer cover 1, and an upper snap position 21 is provided on the upper insertion edge 20; a cover body snap member 11 that snap-fits with the upper snap position 21 is formed on the inner wall of the outer cover 1. The inner cover 2 forms a tight nested fit with the open end of the outer cover 1 through the upper insertion edge 20, and the outer cover 1 and the inner cover 2 are fastened through the snap connection between the upper snap position 21 and the cover body snap member 11.

[0027] In the box body 200, the inner box 5 is formed with a lower plugging edge 50 that matches the outer box 4, and a lower snap-fit ​​position 51 is provided on the lower plugging edge 50; the inner wall of the outer box 4 is formed with a box body snap-fitting member 41 that snap-fits with the lower snap-fitting position 51. The inner box 5 is fastened and nested with the open end of the outer box 4 through the lower plugging edge 50, and the outer box 4 and the inner box 5 are fastened through the snap-fitting connection between the lower snap-fitting position 51 and the box body snap-fitting member 41.

[0028] In addition, the inner box 5 is formed with two upper cavities 201, and the inner box 5 is formed with two lower cavities 501, and the upper and lower cavities cooperate with each other to form two earphone cavities for placing left and right earphones.

[0029] Combination Figure 6 , Figure 8 , Figure 9 As shown, a cavity is formed between the outer box 4 and the inner box 5, and the cavity is used to install a fixing seat 8, a circuit board 9 and circuit elements related to the charging box. The fixing seat 8 is made of plastic. The fixing seat 8 is used to carry the circuit board 9 and circuit elements related to the charging box. Specifically, the fixing seat 8 is a frame structure, which includes: a bottom plate 81 fixedly connected to the outer box 4 and a column 82 for carrying the circuit board 9. Ear plates 83 are provided on both sides of the bottom plate 81, and the ear plates 83 are fixedly connected to the support column pins 43 on the inner bottom surface of the outer box 4 by screws. At least two columns 82 are provided, and the columns 82 extend upward, and the circuit board 9 is fixedly connected to the top surface of the columns 82.

[0030] The circuit board 9 is generally distributed in the horizontal direction, and a USB interface 7 for charging the charging box is arranged in the horizontal direction on the circuit board 9. A socket 401 is provided at the side of the outer box 4 corresponding to the position of the USB interface 7.

[0031] The battery 90 in the present invention is arranged below the circuit board 9 and is electrically connected to the circuit board 9. A partition 901 is arranged at the bottom of the circuit board 9 to protect the battery 90. Of course, a buffer such as sponge can also be arranged between the partition 901 and the battery 90.

[0032] Combination Figure 3 , Figure 4 , Figure 6 As shown, the pivot mechanism 300 comprises: a first pivot member 31, a second pivot member 32, a pivot shaft 33 and a reinforcing plate 6. The first pivot member 31 and the second pivot member 32 are made of plastic material by injection molding, and the pivot shaft 33 and the reinforcing plate 6 are made of metal material.

[0033] The first pivoting member 31 described above includes an integrally formed cover body connecting portion 311 and an upper pivoting portion 312. The cover body connecting portion 311 is used for fixedly connecting with the cover body 100, and the upper pivoting portion 312 is used for pivotally connecting with the second pivoting member 32.

[0034] The second pivoting member 32 described above includes an integrally formed box body connecting portion 321 and a lower pivoting portion 322. The box body connecting portion 321 is used for fixedly connecting with the box body 200, and the lower pivoting portion 322 is used for pivotally connecting with the first pivoting member 31.

[0035] The reinforcing plate 6 is a thin metal plate, which is fixed between the outer box 4 and the inner box 5 and is used to provide strength support for the box body 200 and the pivoting mechanism 300. The reinforcing plate 6 includes: an integrally formed support plate 61, a plug-in plate 62 and a bending plate 63. The support plate 61 abuts against the inner wall of the outer box 4, and the support plate 61 is located between two adjacent columns 82 in the fixing seat 8, and the two columns 82 form clamping and positioning for the support plate 61. Of course, in order to enhance the structural strength, the support plate 61 can be pasted on the inner wall of the outer box 4 with glue to form an integral body with the outer box 4. In addition, an avoidance hole 60 is opened at the position of the support plate 61 corresponding to the USB interface 7.

[0036] The plug-in plate 62 in the reinforcing plate 6 is used to connect with the second pivoting member 32. A lower slot 3210 is opened on the lower bottom surface of the box body connecting portion 321 in the second pivoting member 32. During installation, the plug-in plate 62 is inserted upward into the lower slot 3210 opened on the box body connecting portion 321. In order to enable the support plate 61 to abut against the inner wall of the outer box 4 and at the same time enable the plug-in plate 62 to be smoothly inserted into the lower slot 3210, a bending strip is formed on the support plate 61 in the horizontal direction, so that the plug-in plate 62 can be offset in the inner direction to facilitate vertical upward insertion into the lower slot 3210. At the same time, due to the presence of the bending strip, it acts as a reinforcing rib and can further improve the torsional strength of the reinforcing plate 6.

[0037] The bending plate 63 in the reinforcing plate 6 is used to reinforce the entire reinforcing plate 6. Figure 6 As shown, the bending plate 63 is inserted above or below the bottom plate 81 of the fixing seat 8, and then fixedly connected to the bottom plate 81 by screws or rivets.

[0038] The pivot mechanism 300 of the present invention requires a certain rotation space when rotating, so a pivot notch 40 is formed at the upper plugging edge 20 of the outer box 4 at a position corresponding to the pivot mechanism 300. The pivot mechanism 300 is installed as follows: the cover body connecting portion 311 of the first pivot member 31 is fixedly installed between the outer cover 1 and the inner cover 2, and the upper pivot part 312 extends downward from the cover body 100 to the pivot notch 40; the box body connecting portion 321 of the second pivot member 32 is fixedly installed between the outer box 4 and the inner box 5, and the lower pivot part 322 extends upward from the box body 200 to the pivot notch 40, and the lower pivot part 322 is pivotally connected to the upper pivot part 312 through the pivot shaft 33.

[0039] Specifically, an upper slot 22 is formed at the upper plugging edge 20 of the inner cover 2 near the pivot notch 40; and an upper plugging portion 3110 that plugs and cooperates with the upper slot 22 is disposed on the cover body connecting portion 311. Figure 3 , Figure 7 As shown, the upper slot 22 has a plurality of slot positions, and the upper plug-in portion 3110 is a plurality of plug-in protrusions formed on the inner side of the cover body connecting portion 311. During assembly, the first pivot member 31 is moved from top to bottom to insert the upper plug-in portion 3110 into the corresponding slot position of the upper slot 22. In addition, in order to ensure that the first pivot member 31 does not form a protrusion on the edge of the cover body 100, an inner cover notch 220 is formed on the upper plug-in edge 20 of the inner cover 2 corresponding to the position of the upper slot 22. The depth of the inner cover notch 220 corresponds to the thickness of the cover body connecting portion 311. After assembly, the first pivot member 31 just fills the inner cover notch 220. Similarly, in combination with Figure 5 As shown, an inner box notch 502 is also formed at the edge of the inner box 5 at a position corresponding to the first pivot member 31 , and the depth of the inner box notch 502 corresponds to the thickness of the cover connecting portion 311 .

[0040] A limiting convex strip 3121 is formed at the lowermost end of the upper pivoting portion 312 of the first pivoting member 31 along the axial direction, and an upper shaft hole 3122 for the pivot shaft 33 to pass through is formed in the upper pivoting portion 312 .

[0041] Combination Figure 3 , Figure 4 , Figure 6 ,as well as Figures 8 to 10 As shown, two lower pivot parts 322 are provided in the second pivot member 32, and each lower pivot part 322 is provided with a lower shaft hole 3222 cooperating with the pivot 33, a pivot rotation position 3221 for the rotation of the limiting protrusion 3121 is formed between the two lower pivot parts 322, and a limiting protrusion 3223 is provided on the upper side of the pivot rotation position 3221 to interfere with the limiting protrusion 3121.

[0042] The upper pivot portion 312 is located between two lower pivot portions 322, and the upper pivot portion 312 and the lower pivot portion 322 are connected by a pivot 33. Thus, the rotatable pivot connection between the first pivot member 31 and the second pivot member 32 is achieved.

[0043] The box body connection portion 321 is provided with a lower slot 3210 opening upward along the bottom surface. A receiving member 42 is integrally formed on the inner wall of the outer box 4 near the pivot notch 40, and the receiving member 42 is inserted upward into the lower slot 3210 opened on the box body connection portion 321. At the same time, the insertion plate 62 in the reinforcing plate 6 is also inserted into the lower slot 3210. An interference fit is formed between the receiving member 42 and the insertion plate 62 and the lower slot 3210 to ensure the tightness of the insertion.

[0044] To improve the strength of the receiving member 42, a reinforcing rib 421 is provided between the receiving member 42 and the inner wall of the outer box 4. The reinforcing rib 421 provides sufficient support for the receiving member 42 to ensure that the receiving member 42 will not break from the outer box 4 during assembly.

[0045] In addition, to enhance the bonding stability between the second pivot member 32 and the box body 200, fastening slots 3211 are formed on the upper side of the second pivot member 32 and at positions on both sides of the pivot rotation position 3221. Figure 5 As shown, fastening blocks 511 that are inserted into the fastening slots 3211 are formed at the lower insertion edge 50 position of the inner box 5. During installation, the fastening blocks 511 will just be inserted into the fastening slots 3211, so that the second pivot member 32 is fixed on both the upper and lower sides by the fastening blocks 511 and the receiving member 42 at the same time.

[0046] As shown in Figure 3 and Figure 10 When the pivot mechanism 300 works, when the cover body 100 is flipped, the cover body 100 drives the first pivot member 31 to rotate along the axis of the pivot 33, and the limit convex strip 3121 rotates synchronously at the pivot rotation position 3221. When the limit convex strip 3121 rotates to the limit protrusion 3223, the cover body 100 cannot continue to rotate, thus forming a limit. When the cover body 100 is closed, the cover body 100 can be directly rotated in the reverse direction, and finally, adsorption positioning is formed by the magnets (not shown in the figure) provided between the cover body 100 and the box body 200.

[0047] In addition, to provide damping for the rotation of the cover body 100, the pivot rotation position 3221 is an arc surface, which corresponds to the trajectory when the limit convex strip 3121 rotates, and the limit convex strip 3121 forms a certain interference with the arc surface, and this interference provides a certain damping for the rotation of the pivot mechanism 300.

[0048] In summary, in view of the problem of the relatively thin housing of the earphone charging case with a double-layer composite structure, a reinforcing plate 6 is added to the pivoting mechanism 300 to provide a strength support between the pivoting mechanism 300 and the housing of the charging case, which can effectively improve the problem of insufficient strength of the thin-shell charging case.

[0049] Certainly, the above are only specific embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made according to the structures, features, and principles described in the scope of the patent application of the present invention should be included within the scope of the patent application of the present invention.

Claims

1. Hinge structure of a thin-shell headphone charging case, comprising: A cover body (100) and a box body (200) pivotally connected by a pivoting mechanism (300), wherein the cover body (100) includes an outer cover (1) and an inner cover (2) that are nested and fitted; the box body (200) includes an outer box (4) and an inner box (5) that are nested and fitted, and a pivoting notch (40) is formed at an edge position of the outer box (4) corresponding to the pivoting mechanism (300), characterized in that: The pivoting mechanism (300) includes: a first pivoting member (31), a second pivoting member (32), a pivot shaft (33), and a reinforcing plate (6). The first pivoting member (31) includes an integrally formed cover body connecting portion (311) and an upper pivoting portion (312); the second pivoting member (32) includes an integrally formed box body connecting portion (321) and a lower pivoting portion (322); The cover body connecting portion (311) in the first pivoting member (31) is fixedly installed between the outer cover (1) and the inner cover (2), and the upper pivoting portion (312) extends downward from the cover body (100) to the pivoting notch (40); The box body connecting portion (321) in the second pivoting member (32) is fixedly installed between the outer box (4) and the inner box (5), and the lower pivoting portion (322) extends upward from the box body (200) to the pivoting notch (40), and the lower pivoting portion (322) is pivotally connected to the upper pivoting portion (312) through the pivot shaft (33); The reinforcing plate (6) is fixed between the outer box (4) and the inner box (5), and it includes an integrally formed support plate (61) and an insertion plate (62). The support plate (61) abuts against the inner wall of the outer box (4), and the insertion plate (62) is inserted upward into a lower slot (3210) formed in the box body connecting portion (321).

2. The hinge structure of the thin-shell headphone charging case according to claim 1, characterized in that: The inner cover (2) is formed with an upper insertion edge (20) that cooperates with the outer cover (1), and an upper snap position (21) is provided on the upper insertion edge (20); a cover body snap member (11) that snap-fits with the upper snap position (21) is formed on the inner wall of the outer cover (1).

3. The hinge structure of the thin-shell headphone charging case according to claim 2, characterized in that: An upper slot (22) is formed at a position on the upper insertion edge (20) close to the pivoting notch (40); an upper insertion portion (3110) that is inserted and cooperates with the upper slot (22) is provided on the cover body connecting portion (311).

4. The hinge structure of the thin-shell headphone charging case according to claim 1, characterized in that: The inner box (5) is formed with a lower insertion edge (50) that cooperates with the outer box (4), and a lower snap position (51) is provided on the lower insertion edge (50); a box body snap member (41) that snap-fits with the lower snap position (51) is formed on the inner wall of the outer box (4).

5. The hinge structure of the thin-shell headphone charging case according to claim 4, characterized in that: A receiving member (42) is integrally formed on the inner wall of the outer box (4) close to the pivoting notch (40), and the receiving member (42) is inserted upward into the lower slot (3210) formed in the box body connecting portion (321).

6. The hinge structure of the thin-shell headphone charging case according to claim 5, characterized in that: A reinforcing rib (421) is provided between the receiving member (42) and the inner wall of the outer box (4).

7. The hinge structure of the thin-shell headphone charging case according to claim 1, characterized in that: A fixing base (8) is also installed in the cavity between the outer box (4) and the inner box (5). The fixing base (8) includes a bottom plate (81) fixedly connected to the outer box (4) and a column (82) for carrying the circuit board (9). A USB interface (7) is arranged horizontally on the circuit board (9). The support plate (61) in the reinforcing plate (6) is located between the two columns (82), and avoidance holes (60) and insertion holes (401) are respectively formed in the support plate (61) and the side surface of the outer box (4) corresponding to the USB interface (7).

8. The hinge structure of the thin-shell headphone charging case according to claim 7, characterized in that: A bending plate (63) is formed at the end of the support plate (61) in the reinforcing plate (6), and the bending plate (63) is fixedly connected to the bottom plate (81) of the fixing base (8).

9. The hinge structure of the thin-shell headphone charging case according to any one of claims 1-8, characterized in that: A limiting rib (3121) is formed at the end of the upper pivoting part (312) in the first pivoting member (31) along the axial direction, and an upper shaft hole (3122) for the pivot shaft (33) to pass through is formed in the upper pivoting part (312). Two lower pivoting parts (322) are arranged in the second pivoting member (32), and lower shaft holes (3222) matching the pivot shaft (33) are formed in the lower pivoting parts (322). A pivoting rotation position (3221) for the limiting rib (3121) to rotate is formed between the two lower pivoting parts (322), and a limiting protrusion (3223) interfering with the limiting rib (3121) is arranged above the pivoting rotation position (3221). The upper pivoting part (312) is located between the two lower pivoting parts (322), and the upper pivoting part (312) and the lower pivoting part (322) are connected by a pivot shaft (33).

10. The hinge structure of the thin-shell headphone charging case according to claim 9, characterized in that: Fastening slots (3211) are formed on the upper side of the second pivoting member (32) and at positions on both sides of the pivoting rotation position (3221). Fastening blocks (511) inserted into the fastening slots (3211) are formed at the position of the lower insertion edge (50) in the inner box (5).

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