Battery charging device and cover opening and closing structure thereof

Abstract

The utility model relates to the technical field of battery charging devices, and relates to a battery charging device and a cover opening and closing structure thereof. The cover opening and closing structure comprises a base, an upper cover, a first magnetic attraction assembly and a second magnetic attraction assembly, the upper cover is rotationally connected with the base and can cover the base, the base is used for placing a camera battery, the first magnetic attraction assembly is located at the rotary connecting end of the upper cover and the base, and the first magnetic attraction assembly comprises at least one first magnetic attraction piece and at least one second magnetic attraction piece; the first magnetic attraction piece is arranged on the upper cover, and the second magnetic attraction piece is arranged on the base; the second magnetic attraction assembly is located at the opening ends of the upper cover and the base, the second magnetic attraction assembly comprises at least one third magnetic attraction piece and at least one fourth magnetic attraction piece, the third magnetic attraction pieces are arranged on the upper cover, and the fourth magnetic attraction pieces are arranged on the base; when the upper cover is opened in place, the first magnetic attraction piece and the second magnetic attraction piece are close to each other and magnetically attract each other; when the upper cover covers the base, the third magnetic attraction piece and the fourth magnetic attraction piece are close to each other and magnetically attract each other. The battery charging device is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of battery charging devices, in particular to a battery charging device and an opening and closing cover structure thereof. Background Art

[0002] The battery charging device can store camera batteries and charge the camera batteries, making it convenient to carry and charge the camera batteries.

[0003] In the related art, a battery charging device includes an upper cover and a base for placing camera batteries. The upper cover and the base are rotatably connected. When the camera batteries need to be removed, the upper cover is rotated to open. When the camera batteries are not needed, the upper cover is rotated to close with the base. However, in this battery charging device, when the upper cover and the base are closed, the upper cover easily separates from the base and becomes open. When the upper cover is opened, the upper cover is easily forced to snap against the base, making it inconvenient to use. Utility Model Content

[0004] The technical problem to be solved by the embodiments of the present utility model is to provide a battery charging device and an opening and closing cover structure thereof, so as to solve the problem that the battery charging device in the prior art is inconvenient to use.

[0005] The utility model discloses an opening and closing cover structure of a battery charging device, which includes a base, an upper cover, a first magnetic attraction component and a second magnetic attraction component. The upper cover is rotatably connected to the base and can be covered with the base. The base is used to place camera batteries, wherein:

[0006] The first magnetic component is located at the rotation connection end between the upper cover and the base, and the first magnetic component includes at least one first magnetic member and at least one second magnetic member, the first magnetic member is provided on the upper cover, and the second magnetic member is provided on the base;

[0007] The second magnetic component is located at the open end of the upper cover and the base, and the second magnetic component includes at least one third magnetic component and at least one fourth magnetic component, the third magnetic component is provided on the upper cover, and the fourth magnetic component is provided on the base;

[0008] When the upper cover is opened to its full position, the first magnetic component and the second magnetic component are attracted to each other, and the third magnetic component and the fourth magnetic component are out of position; when the upper cover is closed with the base, the third magnetic component and the fourth magnetic component are attracted to each other, and the first magnetic component and the second magnetic component are out of position.

[0009] Optionally, the upper cover includes a first slot seat with a built-in first accommodating slot, and the base includes a second slot seat with a built-in second accommodating slot, the second accommodating slot corresponds to the position of the first accommodating slot, the first magnetic attraction part is partially accommodated in the first accommodating slot, and the second magnetic attraction part is partially accommodated in the second accommodating slot.

[0010] Optionally, a first avoidance slope is provided on the outer side of the first slot seat for avoiding the second magnetic attraction component, and a second avoidance slope is provided on the outer side of the second slot seat for avoiding the first magnetic attraction component.

[0011] Optionally, a first rotating mounting portion and a second rotating mounting portion are formed on the upper cover, and the first rotating mounting portion and the second rotating mounting portion are both rotatably mounted on the base through a rotating shaft, and the first magnetic member is arranged between the first rotating mounting portion and the second rotating mounting portion.

[0012] Optionally, the third magnetic member and the fourth magnetic member are both provided in plurality, and the plurality of the third magnetic members and the plurality of the fourth magnetic members are both provided on the side opposite to the rotating shaft, and the plurality of the third magnetic members and the plurality of the fourth magnetic members are both distributed at intervals along the axial direction of the rotating shaft.

[0013] Optionally, the upper cover includes an inner cover and an outer cover connected to the inner cover, the inner cover is provided with a third receiving groove, the third magnetic attraction part is accommodated in the third receiving groove, the outer cover is provided on the outer periphery of the inner cover and covers the notch of the third receiving groove, and the outer cover is rotatably connected to the base.

[0014] Optionally, the base includes a shell and a battery holder for placing a camera battery, the battery holder is connected to the shell and arranged inside the shell, the battery holder is provided with a fourth receiving slot corresponding to the position of the third receiving slot, the fourth magnetic component is accommodated in the fourth receiving slot, the shell covers the notch setting of the fourth receiving slot, and the battery holder is rotatably connected to the outer cover.

[0015] Optionally, the battery holder is detachably connected to the housing.

[0016] Optionally, a card slot is provided on one of the battery holder and the housing, and a buckle is provided on the other, and the buckle is received in the card slot.

[0017] The utility model also discloses a battery charging device, comprising a circuit board and the opening and closing cover structure of the battery charging device as described above, wherein the circuit board is arranged in the base.

[0018] Compared with the prior art, the battery charging device and its opening and closing cover structure provided by the embodiment of the utility model have the following beneficial effects: the opening and closing cover structure of the battery charging device is provided by setting a base, an upper cover, a first magnetic component and a second magnetic component. The base is used to place the camera battery. The first magnetic component is located at the rotating connection end of the upper cover and the base. The first magnetic component includes at least one first magnetic component and at least one second magnetic component. The first magnetic component is provided on the upper cover, the second magnetic component is provided on the base, and the second magnetic component is located at the opening end of the upper cover and the base. The second magnetic component includes at least one third magnetic component and at least one fourth magnetic component. The third magnetic component is provided on the upper cover, and the fourth magnetic component is provided on the base. When the upper cover is opened into place, the upper cover can be positioned in the open state by the magnetic action of the first magnetic component and the second magnetic component. When the upper cover and the base are closed, the upper cover and the base can be kept in the closed state by the magnetic action of the third magnetic component and the fourth magnetic component. It is very convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments, in which:

[0020] Figure 1 This is a three-dimensional schematic diagram of the opening and closing cover structure of the battery charging device provided by an embodiment of the utility model;

[0021] Figure 2 This is a schematic cross-sectional view of the battery charging device (in a state where the upper cover and the base are covered) provided by an embodiment of the utility model;

[0022] Figure 3 yes Figure 2 A partial enlarged schematic diagram of position A in the middle;

[0023] Figure 4 This is another cross-sectional structural diagram of the battery charging device (in a state where the upper cover and the base are covered) provided by an embodiment of the utility model;

[0024] Figure 5 This is a schematic cross-sectional view of the battery charging device (with the upper cover opened) provided by an embodiment of the present utility model;

[0025] Figure 6 This is an exploded schematic diagram of a battery charging device provided by an embodiment of the present utility model;

[0026] Figure 7 It is a three-dimensional schematic diagram of a battery holder (with a circuit board installed) provided by an embodiment of the present utility model.

[0027] The reference numerals in the figures are:

[0028] 10. Base; 11. Second slot seat; 111. Second accommodating slot; 112. Second avoidance slope; 12. Second mounting hole; 10a. Housing; 10b. Battery holder; 10b1. Fourth accommodating slot; 20. Upper cover; 21. First slot seat; 211. First accommodating slot; 212. First avoidance slope; 20a. Inner cover; 20a1. Third accommodating slot; 20b. Outer cover; 22. First rotating mounting portion; 221. First mounting hole; 23. Second rotating mounting portion; 30. First magnetic assembly; 31. First magnetic part; 32. Second magnetic part; 40. Second magnetic assembly; 41. Third magnetic part; 42. Fourth magnetic part; 50. Rotating shaft; 60. Circuit board. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. Now, in conjunction with the accompanying drawings, a detailed description of the preferred embodiments of the present utility model will be given.

[0030] The present invention provides an opening and closing cover structure of a battery charging device, such as Figure 1 、 Figure 2 and Figure 4 、 Figure 5 As shown, the opening and closing cover structure of the battery charging device includes a base 10, an upper cover 20, a first magnetic component 30 and a second magnetic component 40. The upper cover 20 is rotatably connected to the base 10 and can cover the base 10. The base 10 is used to place camera batteries.

[0031] The first magnetic component 30 is located at the rotating connection end between the upper cover 20 and the base 10. The first magnetic component 30 includes at least one first magnetic component 31 and at least one second magnetic component 32. The first magnetic component 31 is arranged on the upper cover 20, and the second magnetic component 32 is arranged on the base 10.

[0032] The second magnetic component 40 is located at the open end of the upper cover 20 and the base 10. The second magnetic component 40 includes at least one third magnetic component 41 and at least one fourth magnetic component 42. The third magnetic component 41 is arranged on the upper cover 20, and the fourth magnetic component 42 is arranged on the base 10.

[0033] When the upper cover 20 is opened to its full position, the first magnetic component 31 and the second magnetic component 32 are magnetically attracted to each other, and the third magnetic component 41 and the fourth magnetic component 42 are out of position; when the upper cover 20 and the base 10 are closed, the third magnetic component 41 and the fourth magnetic component 42 are magnetically attracted to each other, and the first magnetic component 31 and the second magnetic component 32 are out of position.

[0034] The opening and closing cover structure of the battery charging device of the present invention is provided with a base 10, an upper cover 20, a first magnetic component 30 and a second magnetic component 40. The base 10 is used to place the camera battery. The first magnetic component 30 is located at the rotation connection end of the upper cover 20 and the base 10. The first magnetic component 30 includes at least one first magnetic member 31 and at least one second magnetic member 32. The first magnetic member 31 is provided on the upper cover 20, the second magnetic member 32 is provided on the base 10, and the second magnetic component 40 is located at the opening between the upper cover 20 and the base 10. The end is set, the second magnetic component 40 includes at least one third magnetic component 41 and at least one fourth magnetic component 42, the third magnetic component 41 is arranged on the upper cover 20, and the fourth magnetic component 42 is arranged on the base 10. When the upper cover 20 is opened into place, the upper cover 20 can be positioned in the open state by the magnetic action of the first magnetic component 31 and the second magnetic component 32. When the upper cover 20 and the base 10 are covered, the upper cover 20 and the base 10 can be kept in the covered state by the magnetic action of the third magnetic component 41 and the fourth magnetic component 42, which is very convenient to use.

[0035] When the first magnetic member 31 and the second magnetic member 32 are out of position, they are not magnetically attracted to each other. When the third magnetic member 41 and the fourth magnetic member 42 are out of position, they are not magnetically attracted to each other.

[0036] The number of first magnetic members 31 can be one, two, three, or more. The number of second magnetic members 32 can be one, two, three, or more. The number of third magnetic members 41 can be one, two, three, or more. The number of fourth magnetic members 42 can be one, two, three, or more. The number of first magnetic members 31, second magnetic members 32, third magnetic members 41, and fourth magnetic members 42 can be set according to actual needs.

[0037] In addition, the first magnetic member 31 and the second magnetic member 32 can be one magnet and the other an iron block, or both magnets with opposite magnetic properties, and both can be magnetically attracted to each other when the upper cover 20 is open. Similarly, the third magnetic member 41 and the fourth magnetic member 42 can be one magnet and the other an iron block, or both magnets with opposite magnetic properties, and both can be magnetically attracted to each other when the upper cover 20 and the base 10 are closed. Preferably, the first magnetic member 31 and the second magnetic member 32 are magnets with opposite magnetic properties, and the third magnetic member 41 and the fourth magnetic member 42 are magnets with opposite magnetic properties.

[0038] refer to Figure 2 and Figure 3The upper cover 20 includes a first slot seat 21 with a built-in first accommodating slot 211, and the base 10 includes a second slot seat 11 with a built-in second accommodating slot 111. The position of the second accommodating slot 111 corresponds to the position of the first accommodating slot 211. The first magnetic component 31 is partially accommodated in the first accommodating slot 211, and the second magnetic component 32 is partially accommodated in the second accommodating slot 111.

[0039] By providing the first receiving groove 211 and the second receiving groove 111, the first magnetic member 31 and the second magnetic member 32 can be respectively limitedly installed in the corresponding first slot seat 21 and the second slot seat 11, ensuring that the first magnetic member 31 and the second magnetic member 32 are in the correct position between the upper cover 20 and the base 10, and preventing them from shifting or falling off during the opening and closing process. Among them, the first magnetic member 31 is partially accommodated in the first receiving groove 211, and the second magnetic member 32 is partially accommodated in the second receiving groove 111. When the first magnetic member 31 and the second magnetic member 32 approach each other and are magnetically attracted, the first slot seat 21 and the second slot seat 11 will not collide, thereby ensuring the reliability of the first magnetic member 31 and the second magnetic member 32 approaching each other and being magnetically attracted.

[0040] Further, continue to refer to Figure 2 and Figure 3 The outer side of the first groove seat 21 is provided with a first avoidance inclined surface 212 for avoiding the second magnetic attraction member 32 , and the outer side of the second groove seat 11 is provided with a second avoidance inclined surface 112 for avoiding the first magnetic attraction member 31 .

[0041] A first avoidance slope 212 is provided on the outside of the first slot seat 21 to avoid the second magnetic member 32, ensuring that the second magnetic member 32 can smoothly pass outside the first slot seat 21 during the opening and closing process of the upper cover 20, avoiding collision or obstruction. Similarly, a second avoidance slope 112 is provided on the outside of the second slot seat 11 to avoid the second magnetic member 32, ensuring that the second magnetic member 32 can smoothly pass outside the first slot seat 21 during the opening and closing process of the upper cover 20, avoiding collision or obstruction, thereby improving the smoothness of the rotation of the upper cover 20 relative to the base 10.

[0042] refer to Figure 2 、 Figures 5 to 7 In an optional embodiment of the present application, a first rotating mounting portion 22 and a second rotating mounting portion 23 are formed on the upper cover 20. The first rotating mounting portion 22 and the second rotating mounting portion 23 are both rotatably mounted on the base 10 through a rotating shaft 50. The first magnetic member 31 is arranged between the first rotating mounting portion 22 and the second rotating mounting portion 23.

[0043] By providing the first rotatable mounting portion 22 and the second rotatable mounting portion 23, both of which are rotatably mounted on the base 10 via the rotating shaft 50, the stability and reliability of the rotation of the upper cover 20 and the base 10 can be improved. In addition, the first magnetic member 31 is disposed between the first rotatable mounting portion 22 and the second rotatable mounting portion 23. When the first magnetic member 31 and the second magnetic member 32 approach each other and are magnetically attracted to each other, the rotation of the upper cover 20 relative to the base 10 is more stable, reducing the possibility of the upper cover 20 tilting relative to the base 10.

[0044] In specific implementation, a first mounting hole 221 is provided on the first rotating mounting part 22 and the second rotating mounting part 23, and two second mounting holes 12 corresponding to the first rotating mounting part 22 and the second rotating mounting part 23 are provided on the base 10. A rotating shaft 50 passes through the first mounting hole 221 of the first rotating mounting part 22 and a second mounting hole 12 on the base 10, and another rotating shaft 50 passes through the second mounting hole 12 of the second rotating mounting part 23 and another second mounting hole 12 on the base 10, thereby realizing the rotational connection between the upper cover 20 and the base 10, with a simple structure and stable rotation.

[0045] In an optional embodiment of the present application, multiple third magnetic members 41 and multiple fourth magnetic members 42 are provided, and the multiple third magnetic members 41 and the multiple fourth magnetic members 42 are all arranged on the side opposite to the rotating shaft 50, and the multiple third magnetic members 41 and the multiple fourth magnetic members 42 are all spaced apart and distributed along the axial direction of the rotating shaft 50.

[0046] By disposing the plurality of third magnetic members 41 and the plurality of fourth magnetic members 42 on the side opposite the rotating shaft 50, and by distributing the plurality of third magnetic members 41 and the plurality of fourth magnetic members 42 at intervals along the axial direction of the rotating shaft 50, a more uniform magnetic attraction effect is achieved between the base 10 and the upper cover 20, so that when the upper cover 20 and the base 10 are covered, they can be more firmly covered together, further improving the stability of the covering. The plurality of third magnetic members 41 and the plurality of fourth magnetic members 42 can increase the magnetic attraction between the base 10 and the upper cover 20, further ensuring that the upper cover 20 and the base 10 will not loosen due to insufficient magnetic force during use.

[0047] Preferably, two third magnetic members 41 are provided, and two fourth magnetic members 42 are provided accordingly. The two third magnetic members 41 are spaced apart along the axial direction of the rotating shaft 50 , and the two fourth magnetic members 42 are spaced apart along the axial direction of the rotating shaft 50 .

[0048] refer to Figure 6 and Figure 7In an optional embodiment of the present application, the upper cover 20 includes an inner cover 20a and an outer cover 20b connected to the inner cover 20a, the inner cover 20a is provided with a third receiving groove 20a1, the third magnetic member 41 is accommodated in the third receiving groove, the outer cover 20b is arranged on the outer periphery of the inner cover 20a and covers the notch setting of the third receiving groove 20a1, and the outer cover 20b is rotatably connected to the base 10.

[0049] The dual-layer structure of inner cover 20a and outer cover 20b effectively protects the camera battery placed in base 10 to a certain extent. Furthermore, outer cover 20b covers the notch of third receiving slot 20a1, further ensuring that third magnetic member 41 is securely mounted in third receiving slot 20a1. This effectively protects third magnetic member 41 from external environmental influences, such as dust and moisture, extending the life of third magnetic member 41. The structure is simple and installation is convenient.

[0050] In a specific implementation, the inner cover 20a and the outer cover 20b can be detachably connected by means of a snap connection or a threaded connection to facilitate the installation and replacement of the third magnetic component 41.

[0051] The first magnetic member 31 is specifically disposed on the outer cover 20b.

[0052] Further, refer to Figure 6 The base 10 includes a shell 10a and a battery holder 10b for placing the camera battery. The battery holder 10b is connected to the shell 10a and is arranged inside the shell 10a. The battery holder 10b is provided with a fourth receiving groove 10b1 corresponding to the position of the third receiving groove 20a1. The fourth magnetic component 42 is accommodated in the fourth receiving groove 10b1. The shell 10a covers the notch setting of the fourth receiving groove 10b1. The battery holder 10b is rotatably connected to the outer cover 20b.

[0053] By setting the outer shell 10a and the battery holder 10b, other components of the battery charging device such as the circuit board 60 can be arranged in the space between the outer shell 10a and the battery holder 10b, effectively utilizing the internal space of the outer shell 10a, and the outer shell 10a can effectively protect its internal components such as the battery holder 10b, the circuit board 60, etc.

[0054] The position of fourth receiving slot 10b1, which houses fourth magnetic member 42, corresponds to the position of third receiving slot 20a1. This ensures that when upper cover 20 is closed onto base 10, third magnetic member 41 and fourth magnetic member 42 are aligned and magnetically attracted to each other. The notch of fourth receiving slot 10b1, which is covered by housing 10a, further ensures that fourth magnetic member 42 is securely mounted therein. This effectively protects fourth magnetic member 42 from external environmental influences, such as dust and moisture, extending the life of fourth magnetic member 42. The structure is simple and installation is convenient.

[0055] The second magnetic member 32 is specifically disposed on the battery holder 10b.

[0056] In an optional embodiment of the present application, the battery holder 10b is detachably connected to the housing 10a. This allows the user to replace the battery holder 10b with a different one based on the type of camera battery, such as shape and size, and conveniently remove the battery holder 10b to access components within the housing 10a, such as the circuit board 60, for maintenance and adjustment. Furthermore, if the battery holder 10b needs to be upgraded or otherwise modified, the detachable connection design makes this process even simpler and more convenient.

[0057] Specifically, a card slot is provided on one of the battery holder 10 b and the housing 10 a , and a buckle is provided on the other, and the buckle is received in the card slot.

[0058] A slot may be provided on the battery holder 10b and a buckle may be provided on the shell 10a, or a buckle may be provided on the battery holder 10b and a slot may be provided on the shell 10a, both of which can realize a detachable connection between the battery holder 10b and the shell 10a.

[0059] Preferably, a buckle is provided on the inner wall of the shell 10a, and a slot is provided on the outer wall of the battery holder 10b. The shell 10a is detachably connected to the battery holder 10b by being received in the slot on the battery holder 10b through its buckle, which has a simple structure and is easy to assemble.

[0060] In other embodiments, the battery holder 10b and the housing 10a may be detachably connected by threaded connection.

[0061] The present invention also provides a battery charging device. Figure 1 、 Figure 2 、 Figure 4 and Figure 6 The battery charging device includes a circuit board 60 and an opening and closing cover structure of the battery charging device as described above. The circuit board 60 is disposed in the base 10.

[0062] The opening and closing cover structure of the battery charging device of the present invention is provided by setting a base 10, an upper cover 20, a first magnetic component 30 and a second magnetic component 40. The base 10 is used to place the camera battery. The first magnetic component 30 is located at the rotation connection end of the upper cover 20 and the base 10. The first magnetic component 30 includes at least one first magnetic member 31 and at least one second magnetic member 32. The first magnetic member 31 is provided on the upper cover 20, and the second magnetic member 32 is provided on the base 10. The second magnetic component 40 is located at the opening between the upper cover 20 and the base 10. The end is set, the second magnetic component 40 includes at least one third magnetic component 41 and at least one fourth magnetic component 42, the third magnetic component 41 is arranged on the upper cover 20, and the fourth magnetic component 42 is arranged on the base 10. When the upper cover 20 is opened into place, the upper cover 20 can be positioned in the open state by the magnetic action of the first magnetic component 31 and the second magnetic component 32. When the upper cover 20 and the base 10 are covered, the upper cover 20 and the base 10 can be kept in the covered state by the magnetic action of the third magnetic component 41 and the fourth magnetic component 42, which is very convenient to use.

[0063] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Those skilled in the art may modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein; and all these modifications and replacements should fall within the scope of protection of the claims attached to the present invention.

Claims

1. An opening and closing cover structure of a battery charging device, characterized in that: The opening and closing cover structure of the battery charging device includes a base, an upper cover, a first magnetic attraction component and a second magnetic attraction component. The upper cover is rotatably connected to the base and can be covered with the base. The base is used to place a camera battery, wherein: The first magnetic component is located at the rotation connection end between the upper cover and the base, and the first magnetic component includes at least one first magnetic member and at least one second magnetic member, the first magnetic member is provided on the upper cover, and the second magnetic member is provided on the base; The second magnetic component is located at the open end of the upper cover and the base, and the second magnetic component includes at least one third magnetic component and at least one fourth magnetic component, the third magnetic component is provided on the upper cover, and the fourth magnetic component is provided on the base; When the upper cover is opened to its full position, the first magnetic component and the second magnetic component are attracted to each other, and the third magnetic component and the fourth magnetic component are out of position; when the upper cover is closed with the base, the third magnetic component and the fourth magnetic component are attracted to each other, and the first magnetic component and the second magnetic component are out of position.

2. The opening and closing cover structure according to claim 1, characterized in that: The upper cover includes a first slot seat with a built-in first accommodating slot, and the base includes a second slot seat with a built-in second accommodating slot, the second accommodating slot corresponds to the position of the first accommodating slot, the first magnetic attraction part is partially accommodated in the first accommodating slot, and the second magnetic attraction part is partially accommodated in the second accommodating slot.

3. The opening and closing cover structure according to claim 2, characterized in that: The outer side of the first slot seat is provided with a first avoidance inclined surface for avoiding the second magnetic attraction component, and the outer side of the second slot seat is provided with a second avoidance inclined surface for avoiding the first magnetic attraction component.

4. The opening and closing cover structure according to claim 1, characterized in that: A first rotating mounting portion and a second rotating mounting portion are formed on the upper cover. The first rotating mounting portion and the second rotating mounting portion are both rotatably mounted on the base via a rotating shaft. The first magnetic member is arranged between the first rotating mounting portion and the second rotating mounting portion.

5. The opening and closing cover structure according to claim 4, characterized in that: There are multiple third magnetic members and multiple fourth magnetic members, and the multiple third magnetic members and the multiple fourth magnetic members are all arranged on the side opposite to the rotating shaft, and the multiple third magnetic members and the multiple fourth magnetic members are all spaced apart and distributed along the axial direction of the rotating shaft.

6. The opening and closing cover structure according to any one of claims 1 to 5, characterized in that: The upper cover includes an inner cover and an outer cover connected to the inner cover, the inner cover is provided with a third receiving groove, the third magnetic attraction part is accommodated in the third receiving groove, the outer cover is provided on the outer periphery of the inner cover and covers the notch of the third receiving groove, and the outer cover is rotatably connected to the base.

7. The opening and closing cover structure according to claim 6, characterized in that: The base includes a shell and a battery holder for placing a camera battery, the battery holder is connected to the shell and is arranged inside the shell, the battery holder is provided with a fourth receiving slot corresponding to the position of the third receiving slot, the fourth magnetic component is accommodated in the fourth receiving slot, the shell covers the notch setting of the fourth receiving slot, and the battery holder is rotatably connected to the outer cover.

8. The opening and closing cover structure according to claim 7, characterized in that: The battery holder is detachably connected to the housing.

9. The opening and closing cover structure according to claim 8, characterized in that: One of the battery seat and the shell is provided with a card slot, and the other is provided with a card buckle, and the card buckle is received in the card slot.

10. A battery charging device, characterized in that: It comprises a circuit board and an opening and closing cover structure of the battery charging device according to any one of claims 1 to 9, wherein the circuit board is arranged in the base.

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