CN216852306U

CN216852306U - Charging box

Info

Publication number: CN216852306U
Application number: CN202220405949.XU
Authority: CN
Inventors: 王永根; 徐江; 戢澳
Original assignee: Shenzhen Voxtech Co Ltd
Current assignee: Shenzhen Voxtech Co Ltd
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2022-06-28
Anticipated expiration: 2032-02-25

Abstract

The application discloses a charging box, which comprises a first shell assembly, wherein the first shell assembly comprises a main box body with one open end and a supporting plate covering the open end of the main box body, and a profiling groove for accommodating an earphone is arranged on the supporting plate; wherein, the backup pad is provided with first side edge and second side edge relative to each other, and the depth of the part area of profile modeling recess near first side edge is greater than the depth of the part area near second side edge. This application is greater than the depth of the subregion of the second side edge near the backup pad through the subregion's of the first side edge's that is close to the backup pad degree of depth that sets up the profile modeling recess, so that the profile modeling recess is the slope setting, some components can set up in the same horizontal plane with the deepest position of profile modeling recess and not overlap with the deepest position of profile modeling recess, set up other components and the profile modeling recess total height in the box thickness direction that charges in order to reduce the box that charges, reduce the size of the box that charges, improve portability, and the production cost is reduced.

Description

Charging box

Technical Field

The application relates to the technical field of sounding apparatus, in particular to a charging box.

Background

Earphones are widely used in daily life of people, and can be used in cooperation with electronic devices such as mobile phones and computers so as to provide hearing feasts for users. Generally, a charging box matched with the earphone is arranged in the earphone kit, and the charging box is used for charging the earphone.

SUMMERY OF THE UTILITY MODEL

The application provides a charging box, which comprises a first shell assembly, wherein the first shell assembly comprises a main box body with an opening at one end and a supporting plate covering the opening end of the main box body, and a profiling groove for accommodating an earphone is arranged on the supporting plate;

wherein the support plate is provided with a first side edge and a second side edge which are opposite to each other, and the depth of a partial area of the profiling groove close to the first side edge is larger than that of a partial area close to the second side edge.

The beneficial effect of this application is: be different from prior art, this application is greater than the depth of the subregion of the second side edge that is close to the backup pad through the subregion's of the first side edge that sets up the profile modeling recess degree of depth that is close to the backup pad to make the profile modeling recess be the slope setting, some components can set up in the same horizontal plane with the deepest position of profile modeling recess and not overlap with the deepest position of profile modeling recess, thereby set up other components and the profile modeling recess total height in the box thickness direction of charging with reducing the box that charges, and then reduce the size of the box that charges, and the portability is improved, and reduction in production cost simultaneously.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of an embodiment of a headset assembly of the present application;

FIG. 2 is a schematic structural diagram of an embodiment of the charging box of FIG. 1;

FIG. 3 is a first structural schematic view of an embodiment of the support plate of FIG. 2;

FIG. 4 is a second structural view of one embodiment of the support plate of FIG. 2;

FIG. 5 is a front view of one embodiment of the support plate of FIG. 2;

FIG. 6 is a schematic cross-sectional view of the support plate of FIG. 5 taken along section I-I;

FIG. 7 is a schematic structural diagram of an embodiment of the main box of FIG. 2;

FIG. 8 is a schematic diagram of an embodiment of the circuit board of FIG. 2;

FIG. 9 is a schematic view of the support plate of FIG. 2 in a mated configuration with a circuit board;

FIG. 10 is a schematic structural view of an embodiment of the fourth housing of FIG. 2;

FIG. 11 is a schematic diagram of an embodiment of the junction assembly of FIG. 2;

FIG. 12 is a first schematic circuit diagram of an embodiment of a charging box of the present application;

FIG. 13 is a second schematic electrical circuit diagram of an embodiment of a charging box of the present application;

FIG. 14 is a third schematic circuit diagram of an embodiment of a charging box of the present application;

FIG. 15 is a circuit schematic of one embodiment of the switch circuit of FIG. 14;

fig. 16 is a first structural schematic diagram of an embodiment of the headset of fig. 1;

fig. 17 is a second schematic diagram of the embodiment of the headset of fig. 1;

fig. 18 is a third structural schematic diagram of an embodiment of the headset of fig. 1;

fig. 19 is a circuit diagram of an embodiment of the headset of the present application.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present application, the charging box provided in the present application is further described in detail below with reference to the accompanying drawings and the detailed description. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first", "second", etc. in this application are used to distinguish between different objects and not to describe a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of an earphone assembly according to the present application. As shown in fig. 1, the earphone assembly 10 includes an earphone 100 and a charging box 200. Specifically, when the charging box 200 is opened, the earphone 100 is disposed on the charging box 200, so that the charging box 200 charges the earphone 100.

The number of the earphones 100 is two, the two earphones correspond to the left ear and the right ear of a person respectively, when any one of the earphones 100 is placed in the charging box 200, and the charging box 200 detects that the electric quantity of the earphone 100 is smaller than a preset threshold value, the earphone 100 is charged until the electric quantity of the earphone 100 is 100%. Preferably, the preset threshold is 90%.

In addition, when the two earphones 100 are placed in the charging box 200, the charging box 200 needs to perform charging operation on the two earphones 100 when detecting that the two earphones 100 are both smaller than the preset threshold value.

Referring to fig. 2 in addition to fig. 1, fig. 2 is a schematic structural diagram of an embodiment of the charging box in fig. 1. As shown in fig. 2, the charging box 200 includes a first housing assembly 210, a second housing assembly 220, a circuit board 230, a battery 240, and an adapter assembly 250. The first housing element 210 is pivotally connected to the second housing element 220.

Specifically, the first housing component 210 includes a main case 211 with an opening at one end and a supporting plate 212 covering the opening end of the main case 211, an accommodating space 214 is formed between the main case 211 and the supporting plate 212, and the circuit board 230, the battery 240 and the adapter component 250 are disposed in the accommodating space 214.

With reference to fig. 2, further referring to fig. 3-7, fig. 3 is a first structural schematic diagram of an embodiment of the support plate in fig. 2, fig. 4 is a second structural schematic diagram of an embodiment of the support plate in fig. 2, fig. 5 is a front view of an embodiment of the support plate in fig. 2, fig. 6 is a sectional schematic diagram of the support plate in fig. 5 taken along a section I-I, and fig. 7 is a structural schematic diagram of an embodiment of the main box body in fig. 2.

As shown in fig. 3 and 5, the supporting plate 212 is provided with a profile groove 213 for receiving the earphone 100. Specifically, the support plate 212 is provided with a first side edge 21211 and a second side edge 21212 opposite to each other, and a third side edge 21213 and a fourth side edge 21214 opposite to each other. Wherein the third side edge 21213 and the fourth side edge 21214 are configured to connect the first side edge 21211 and the second side edge 21212.

The contoured recess 213 includes a first contoured region 2131, a second contoured region 2132, and a third contoured region 2133, the third contoured region 2133 for connecting the first contoured region 2131 with the second contoured region 2132. Wherein the first contoured region 2131 is disposed proximate the first side edge 21211 and the second contoured region 2132 is disposed proximate the second side edge 21212.

The third profiling area 2133 includes a first boundary 2133A and a second boundary 2133B formed at two ends of the arc segment, and the third profiling area 2133 is connected to the second profiling area 2132 by the first boundary 2133A and connected to the first profiling area 2131 by the second boundary 2133B.

With further reference to fig. 16 and 17, fig. 16 is a schematic view of a first structure of an embodiment of the headset of fig. 1, and fig. 17 is a schematic view of a second structure of an embodiment of the headset of fig. 1. As shown in fig. 16, the earphone 100 includes a main body 110, a battery part 120, and an elastic connection part 130, and the elastic connection part 130 is used to connect the main body 110 and the battery part 120. As shown in fig. 17, the main body 110 of the earphone 100 is provided with a first power receiving electrode 141 on the side close to the human ear in the worn state, and the battery unit 120 is provided with a second power receiving electrode 142 on the side close to the human ear in the worn state.

The elastic connecting portion 130 connects the main body portion 110 and the battery portion 120, so that the earphone 100 is curved in a three-dimensional space when in a non-wearing state (i.e., a natural state). That is, the body portion 110, the battery portion 120, and the elastic connection portion 130 are not coplanar in a three-dimensional space. When the headset 100 is worn, the main body 110 is configured to contact the front side of the ear of the user, the battery part 120 and the part of the elastic connecting part 130 are configured to be hung between the back side of the ear of the user and the head, and the part of the elastic connecting part 130 extends from the head to the outside of the head and cooperates with the main body 110 to provide a pressing force on the front side of the ear, so that the main body 110, the elastic connecting part 130 and the battery part 120 cooperate to clamp the ear.

Specifically, the ratio between the length of the elastic connection portion 130 in the third direction Z and the length of the battery portion 120 in the third direction Z may be greater than or equal to 100%, and preferably, the aforementioned ratio may be greater than or equal to 150%. The projection of the battery part 120 on the X-Y plane is located within the projection of the elastic connection part 130 on the X-Y plane. The cross-sectional area of at least a partial region of the battery part 120 may be greater than the maximum cross-sectional area of the elastic connection part 130. In the present embodiment, the battery part 120 is disposed in a column shape, and a ratio between the length and the outer diameter may be less than or equal to 6.

The first contour area 2131 is used for accommodating the main body part 110 of the earphone 100, the second contour area 2132 is used for accommodating the battery part 120 of the earphone 100, and the third contour area 2133 is used for accommodating the elastic connecting part 130 of the earphone 100. Specifically, as shown in fig. 1, the earphone 100 is placed in the charging box 200 along the direction opposite to the first direction X, and the side of the earphone 100 where the first power receiving electrode 141 and the second power receiving electrode 142 are provided is disposed near the profiling groove 213.

As shown in fig. 4 and 6, the depth of a portion of the profile groove 213 near the first side edge 21211 is greater than the depth of a portion near the second side edge 21212. Wherein the depth of a portion of the first contoured region 2131 is less than the depth of the second contoured region 2132, and the depth of a portion of the third contoured region 2133 adjacent the first side edge 21211 is greater than the depth of the second contoured region 2132 and greater than the depth of the first contoured region 2131.

Wherein an angle between a connecting line between a lowest point a of the surface of the third profiling region 2133 on the side forming the profiling groove 213 with respect to the support plate 212 and a highest point B of the surface of the second profiling region 2132 on the side forming the profiling groove 213 with respect to the support plate 212 and a plane parallel to the side forming the profiling groove 213 with respect to the support plate 212 ranges from 10 ° to 60 °. Specifically, the highest point B is a connection point of the second power receiving electrode 142 of the earphone 100 and the second profiling area 2132.

Since sweat may remain on the earphone 100 when a user wears the earphone 100 for a long time, the depth of the second profiling area 2132 for accommodating the battery portion 120 is smaller than the depth of the third profiling area 2133 for accommodating the elastic connection portion 130 of the earphone 100, and the depth of the first power receiving electrode 141 correspondingly disposed in the first profiling area 2131 is smaller than the depth of the lowest point a, so that the remaining sweat flows to the lowest point a along the profiling groove 213, and the problem of short circuit caused by contact between the remaining sweat and the first power receiving electrode 141 on the main body portion 110 and the second power receiving electrode 142 on the battery portion 120 can be prevented.

As shown in fig. 17, the main body 110 of the earphone 100 includes a housing 111, a movement (not shown), and a main board (not shown), the housing 111 forms an accommodating cavity (not shown), the movement and the main board are disposed in the accommodating cavity, and the main board is further disposed with a second microprocessor 112.

Specifically, a key (not shown) is disposed on a side of the housing 111 away from the elastic connection portion 130, and the key is connected, or may be electrically connected, to the second microprocessor 112. Optionally, the key may be a physical key or a touch key, and may specifically be an interactive component such as a physical key, a display screen, a touch circuit board, and the like.

The keys generate key trigger signals in response to detecting signals input by the user, and the second microprocessor 112 receives the generated key trigger signals and is configured to detect whether the in-box state signal of the headset 100 is received or not, and perform corresponding functions according to the key trigger signals and the in-box state signal.

When the second microprocessor 112 detects the in-box status signal, it determines that the earphone 100 is placed in the charging box 200, and when receiving a key trigger signal generated by a key, controls the earphone 100 to execute the first function. When the second microprocessor 112 does not detect the in-box status signal, it determines that the earphone 100 is not placed in the charging box 200, and when receiving a key trigger signal generated by a key, controls the earphone 100 to execute the second function.

Optionally, the first function includes at least one of pairing the headset 100 with a communication device or restoring the headset 100 to a factory setting, and the second function includes at least one of playing the headset 100 to pause or play, fast forward or fast backward, and switching songs.

The earphone 100 of the present embodiment multiplexes the functions of the keys, so that the earphone 100 can realize different functions by the same key inside the charging box 200 and outside the charging box 200, thereby reducing the number of keys, lowering the cost, and simplifying the structure.

As shown in fig. 5, the number of the profiling grooves 213 is two for receiving two earphones 100, respectively. Wherein, two profile modeling recesses 213 mirror image settings for set up two earphones 100 in profile modeling recess 213 also mirror image setting, set up in left profile modeling recess 213 with the user in wearing earphone 100 in the left ear, the user is used for wearing in the earphone 100 of the right ear sets up in the profile modeling recess 213 on right side, accords with the human habit of taking the earphone, and convenience of customers takes two earphones 100, and can make two earphones 100 place in charging box 200 firmly.

The distance L between the third profiling areas 2133 of the two profiling grooves 213 gradually decreases and then gradually increases in the direction from the first side edge 21211 to the second side edge 21212. Specifically, the spacing L is the spacing between adjacent sidewalls of the third contoured region 2133 of two contoured grooves 213.

As shown in fig. 4, the supporting plate 212 is further provided with two sets of

magnet mounting grooves

21251 and 21252 on a side facing away from the profiling groove 213 for placing a first magnet (not shown). Because the elastic connecting part 130 of the earphone 100 is easy to deform after being worn for a long time, when the earphone 100 is placed in the profiling groove 213, the second magnet and the first magnet in the earphone 100 attract each other, so that the earphone 100 can be more attached to the profiling groove 213, and the phenomenon that the earphone 100 falls off the profiling groove 213 accidentally is reduced.

The number of each set of magnet mounting grooves 21251 can be two, and by arranging two first magnets, the attraction force of the first magnets to the second magnets is enhanced, so that the main body 110 with larger weight can be fixed in position, and the possibility that the earphone 100 shakes in the profiling groove 213 is reduced.

Further, a snap 2127 is provided on a side of the supporting plate 212 facing away from the profiling recess 213. As shown in fig. 7, a catching groove 2113 is formed on an inner wall of the main case 211, and a catching member 2127 catches the catching groove 2113 to couple the main case 211 and the support plate 212 to form the first housing assembly 210. Alternatively, in other embodiments, blind holes may be used to cooperate with blind pillars, magnets, etc.

As shown in fig. 5, the support plate 212 includes a first flat region 2122 located between the third contoured regions 2133 of the two contoured recesses 213 and adjacent the second side edge 21212, and two second flat regions 2123 located on either side of the third contoured regions 2133 of the two contoured recesses 213 and adjacent the third side edge 21213 and the fourth side edge 21214, respectively.

When the circuit board 230 is disposed in the accommodating space 214 of the first housing assembly 210, a projection of the circuit board 230 on the bottom wall of the main case 211 along the first direction X is close to a projection of the second side edge 21212 of the supporting plate 212 on the bottom wall of the main case 211 along the first direction X. Specifically, the projection of the circuit board 230 on the bottom wall of the main case 211 in the first direction X overlaps the projection of the first flat area 2122 on the bottom wall of the main case 211 in the first direction X, and the projection of the circuit board 230 on the bottom wall of the main case 211 in the first direction X further overlaps the projection of at least one of the two second flat areas 2123 on the bottom wall of the main case 211 in the first direction X.

Referring to fig. 5, with further reference to fig. 8 and 9, fig. 8 is a schematic structural diagram of an embodiment of the circuit board in fig. 2, and fig. 9 is a schematic diagram of the supporting plate and the circuit board in fig. 2. As shown in fig. 8, a side of the circuit board 230 close to the support plate 212 is provided with a second feeding electrode 232, a first feeding electrode 233, and a detection electrode 234. As shown in fig. 8 and 9, the circuit board 230 includes a first circuit area 2311, a second circuit area 2312, and a connection area 2313.

Wherein the connection region 2313 is shaped approximately like a circular ring corresponding to a circular arc transition between the second side edge 21212 and the third side edge 21213 of the support plate 212 or corresponding to a circular arc transition between the second side edge 21212 and the fourth side edge 21214 of the support plate 212. The two ends of the connection region 2313 are respectively connected to the first circuit region 2311 and the second circuit region 2312, the second circuit region 2312 is used for disposing the second power supply electrode 232, and the connection region 2313 is used for disposing the first power supply electrode 233 and the detection electrode 234.

Specifically, the attachment zone 2313 comprises a first boundary 2313A and a second boundary 2313B, wherein the first boundary 2313A is parallel to the first side edge 21211 and the second side edge 21212 and the second boundary 2313B is parallel to the third side edge 21213 and the fourth side edge 21214. The connection region 2313 is connected to the second circuit region 2312 through the first boundary 2313A and connected to the first circuit region 2311 through the second boundary 2313B.

Since the number of the second circuit areas 2312 and the connection areas 2313 is two, the two sets of the second circuit areas 2312 and the connection areas 2313 are connected to both ends of the first circuit area 2311 in the interval direction of the third side edge 21213 and the fourth side edge 21214, respectively, so that the circuit board 230 is disposed in a U-shape as a whole. The circuit board 230 is symmetrically disposed along a center line of the first circuit area 2311, and the two sets of second power supply electrodes 232 respectively disposed in the two sets of second circuit areas 2312, the two sets of first power supply electrodes 233 respectively disposed in the two sets of connection areas 2313, and the detection electrodes 234 respectively disposed in the two sets of connection areas 2313 are symmetrically disposed along the center line of the first circuit area 2311.

Specifically, the projection of the first circuit area 2311 on the bottom wall of the main case 211 in the first direction X overlaps with the projection of the first flat area 2122 on the bottom wall of the main case 211 in the first direction X.

The projection of the second circuit area 2312 on the bottom wall of the main case body 211 along the first direction X overlaps with the projection of the second flat area 2123 on the bottom wall of the main case body 211 along the first direction X, and the projection of the second circuit area 2312 on the bottom wall of the main case body 211 further overlaps with the projection of the first profiling area 2131 on the bottom wall of the main case body 211.

The connection area 2313 connects the first and

second circuit areas

2311 and 2312, and a projection of the connection area 2313 on the bottom wall of the main case body 211 in the first direction X overlaps with a projection of the second profiling area 2132 on the bottom wall of the main case body 211 in the first direction X.

The overlapping area of the connection region 2313 and the second profiling region 2132 is smaller than the overlapping area of the first circuit region 2311 and the first flat region 2122 and the overlapping area of the second circuit region 2312 and the second flat region 2123. Most of the circuit board 230 is disposed at a position not overlapping the profiling groove 213, and the circuit board 230 is not disposed overlapping the third profiling region 2133, that is, the circuit board 230 is not overlapped with the deepest position of the profiling groove 213 in the horizontal plane, so that the height of the charging box 200 at which the circuit board 230 is disposed and the profiling groove 213 are in the thickness direction of the charging box 200 is reduced, thereby reducing the size of the charging box 200, improving portability, and reducing production cost.

Optionally, an overlapping area of the projection of the circuit board 230 on the bottom wall of the main case body 211 and the projection of the third profiling area 2133 on the bottom wall of the main case body 211 is less than 5% of a total projection area of the circuit board 230 on the bottom wall of the main case body 211, the overlapping area may be specifically 5%, 4%, 3%, 2%, 1% or 0%, and 0% is that the projection of the circuit board 230 on the bottom wall of the main case body 211 and the projection of the third profiling area 2133 on the bottom wall of the main case body 211 are not overlapped at all.

As shown in fig. 3 and 5, the first profiling area 2131 includes a boss 21241 and a charging port 21242 disposed on a side surface of the boss 21241, so that the second feeding electrode 232 is exposed to the charging port 21242; the second profiling region 2132 is provided with a through hole 21243 so that the first feeding electrode 233 and the detecting electrode 234 are exposed to the through hole 21243.

Referring further to fig. 12, fig. 12 is a first circuit diagram of an embodiment of the charging box of the present application. As shown in fig. 12, the charging box 200 includes a first microprocessor 2314 and a charging circuit 2315 which are arranged on the circuit board 230, the first microprocessor 2314 is connected with the charging circuit 2315 and the battery 240, and the charging circuit 2315 is further connected with the second power supply electrode 232 and the first power supply electrode 233.

The second feeding electrode 232 is specifically a Pogo-pin, and the first feeding electrode 233 and the detecting electrode 234 are specifically spring electrodes. The detection electrode 234 and the first feeding electrode 233 are disposed opposite to each other in a V-shape. Specifically, both surfaces of the detection electrode 234 facing the first feeding electrode 233 form substantially a V-shaped structure. Alternatively, in this embodiment, the second feeding electrode 232 is a charging anode, and the first feeding electrode 233 is a charging cathode.

Specifically, when the earphone 100 is placed in the profiling groove 213, the first power receiving electrode 141 abuts against the second power supplying electrode 232, and the second power receiving electrode 142 abuts against both the first power supplying electrode 233 and the detecting electrode 234, so that the charging circuit 2315 charges the earphone 100 placed in the charging box 200 through the charging loop formed by the second power supplying electrode 232 and the first power supplying electrode 233.

Referring further to fig. 18, fig. 18 is a third structural diagram of the embodiment of the earphone in fig. 1. As shown in fig. 18, the main body 110 and the battery 120 of the earphone 100 are not at the same level, and when the earphone 100 is placed in the profiling recess 213, the main body 110 and a part of the elastic connection portion 130 connected to the main body 110 surround the boss 21241, so that the earphone 100 fits the profiling recess 213, and further the first power receiving electrode 141 is more easily abutted against the second power feeding electrode 232.

Alternatively, in the present embodiment, the second power receiving electrode 142 may be a strip-shaped electrode or a ring-shaped electrode, so that the earphone 100 is placed in the profiling groove 213, and the second power receiving electrode 142 is fully abutted with the first power supplying electrode 233 and the detecting electrode 234. Meanwhile, the detection electrode 234 and the first power supply electrode 233 which are arranged in a V-shaped opposite manner can better support and fix the battery part 120 of the earphone 100, and prevent the second power receiving electrode 142 from being electrically disconnected from the first power supply electrode 233 and/or the detection electrode 234 due to the movement of the earphone 100.

Specifically, before the charging circuit 2315 charges the earphone 100 put in the charging box 200, it is required to detect whether the earphone 100 is put in the charging box 200. Referring further to fig. 13, fig. 13 is a second circuit diagram of an embodiment of the charging box of the present application. The charging box 200 further includes a sensing circuit 23143 as shown in fig. 13, the sensing circuit 23143 being connected to the first microprocessor 2314 and the connection end of the sensing electrode 234.

When the earphone 100 is placed in the charging box 200, the second power receiving electrode 142 abuts against the first power feeding electrode 233 and the detecting electrode 234 at the same time, so that the detecting electrode 234 is short-circuited to the first power feeding electrode 233, and the first power feeding electrode 233 is a charging negative electrode, so that the level of the detecting electrode 234 is pulled low, and thus, the level change occurs. When the earphone 100 is not put in the charging case 200, the level of the detection electrode 234 does not change.

The detection circuit 23143 generates a detection signal corresponding to the in-box state of the headset 100 by detecting the level change of the detection electrode 234, and transmits the corresponding detection signal to the first microprocessor 2314 to inform the first microprocessor 2314 of the in-box state of the headset 100.

As shown in fig. 13, the detection circuit 23143 includes a first sub-detection circuit 231431 and a second sub-detection circuit 231432 for detecting the in-box status of the two earphones 100, respectively. The number of the detecting electrodes 234 and the first power feeding electrodes 233 is two, when two earphones 100 are placed in the charging box 200, the second power receiving electrode 142 of any earphone 100 and any detecting electrode 234 abut against the first power feeding electrodes 233, and the second power receiving electrode 142 of another earphone and another detecting electrode 234 abut against the first power feeding electrodes 233. Specifically, the first sub-detection circuit 231431 and the second sub-detection circuit 231432 detect the level change of the detection electrode 234-1 and the detection electrode 234-2, respectively, to perform the in-box detection for the two earphones 100.

The first sub-detection circuit 231431 includes a resistor R1, a diode D1, and a capacitor C1. One end of the resistor R1 is connected to the first microprocessor 2314 and one end of the capacitor C1, the other end of the capacitor C1 is grounded, the other end of the resistor R1 is connected to the connection end of the detection electrode 234-1 and one end of the diode D1, and the other end of the diode D1 is grounded.

The second sub-detection circuit 231432 includes a resistor R2, a diode D2, and a capacitor C2. One end of the resistor R2 is connected to the first microprocessor 2314 and one end of the capacitor C2, the other end of the resistor R2 is connected to the connection end of the detection electrode 234-2 and one end of the diode D2, and the other end of the capacitor C2 is connected to the other end of the diode D2 and further grounded.

In the charging box 200 of the embodiment, the detection circuit 23143 detects the level change of the electrode 234 to detect the charging of the earphone 100, so that a complex detection device or circuit is not required to be additionally arranged, the circuit structure of the charging box 200 is simplified, and the cost is reduced.

When the charging box 200 determines that the earphone 100 has been placed in the charging box 200 according to the detection signal generated by the detection circuit 23143, the earphone 100 is further charged by the charging circuit 2315.

Referring to fig. 14 in addition to fig. 12, fig. 14 is a third circuit diagram of an embodiment of the charging box of the present application. As shown in fig. 14, the charging box 200 further includes a switching circuit 23142 and a communication circuit 23141 provided on the circuit board 230.

The switch circuit 23142 is connected to the charging circuit 2315, the first power supply electrode 233 and the first microprocessor 2314, and the communication circuit 23141 is connected to the first microprocessor 2314 and the switch circuit 23142. Alternatively, the communication circuit 23141 may be a circuit separately disposed on the circuit board 230 or integrated within the first microprocessor 2314.

Specifically, the first microprocessor 2314 controls the switching circuit 23142 to intermittently turn the charging circuit 2315 on and off with the first power supply electrode 233, and the first microprocessor 2314 is configured to control the communication circuit 23141 to communicate with the headset 100 via the first power supply electrode 233 to transmit the power inquiry signal to the headset 100 during the period when the charging circuit 2315 is turned off with the first power supply electrode 233.

Alternatively, the frequency at which the charging circuit 2315 is intermittently turned on and off with the first power supply electrode 233 may be 5s^-1That is, in one cycle, the total time for the first microprocessor 2314 to control the charging circuit 2315 to charge the earphone 100 and the time for the communication circuit 23141 to communicate with the earphone 100 is 200 ms.

In one cycle, the first microprocessor 2314 controls the charging circuit 2315 to charge the headset 100 for a preset time, and simultaneously, disconnects the charging circuit 2315 and controls the communication circuit 23141 to communicate with the headset 100 for the preset time. In one period, the charging time may be 195ms, and the communication time may be 5ms, which is not limited herein.

The first microprocessor 2314 further controls the charging circuit 2315 to be disconnected from the first power supply electrode 233 when the earphone power fed back by the earphone 100 reaches a preset power threshold, and controls the communication circuit 23141 to send a shutdown signal to the earphone 100 through the first power supply electrode 233.

Specifically, the first microprocessor 2314 controls the communication circuit 23141 to send a box-in state signal, an electric quantity inquiry signal and a shutdown signal to the second microprocessor 112 of the earphone 100, and the second microprocessor 112 sends the remaining electric quantity information of the earphone 100 to the charging box 200 according to the box-in state signal and the electric quantity inquiry signal, and controls the earphone 100 to shutdown according to the shutdown signal.

Optionally, in other embodiments, the headset 100 may further include a first detection circuit, the first detection circuit is configured to detect a box-in state of the headset 100 and generate first box-in state information according to the box-in state of the headset 100, and the second microprocessor 112 receives a box-in state signal generated by the detection circuit 23143 and/or the first box-in state information generated by the first detection circuit to determine that the headset 100 is placed in the charging box 200.

When the second microprocessor 112 receives the in-box status signal, the second microprocessor 112 determines that the earphone 100 is placed in the charging box 200; when the second microprocessor 112 does not receive the box-in state signal and receives the first box-in state information, the second microprocessor 112 determines that the earphone 100 is placed in the charging box 200 and determines that the charging box 200 is faulty, so as to generate a fault notification signal.

With specific reference to fig. 14, further referring to fig. 15, fig. 15 is a circuit schematic diagram of an embodiment of the switch circuit in fig. 14. As shown in fig. 15, the switch circuit 23142 includes a PMOS transistor Q1, an NMOS transistor Q2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, and a diode D3.

The source of the PMOS transistor Q1 is connected to the charging circuit 2315 and one end of the resistor R3, so as to receive the output signal 5V _ earlobe of the charging circuit 2315. The drain of the PMOS transistor Q1 is connected to the connection end of the first feeding electrode 233, specifically to the first feeding electrode 233-1 and the first feeding electrode 233-2, and corresponds to the first feeding electrodes 233 abutting against the second receiving electrodes 142 of the two earphones 100, respectively. The gate of the PMOS transistor Q1 is connected to the drain of the NMOS transistor Q2 and the other end of the resistor R3, the source of the NMOS transistor Q2 is connected to one end of the resistor R5, the other end of the resistor R5 is grounded, the gate of the NMOS transistor Q2 is connected to one end of the first microprocessor 2314 and one end of the resistor R4, so as to receive the control signal 5V _ output _ control output by the first microprocessor 2314, and the other end of the resistor R4 is grounded.

One end of the resistor R6 is connected to the first microprocessor 2314 to receive the pull-up voltage One _ wire _ power output by the first microprocessor 2314, the other end of the resistor R6 is connected to the anode of the diode D3 and the data receiving terminal RX of the communication circuit 23141, and the cathode of the diode D3 is connected to the data transmitting terminal TX of the communication circuit 23141.

The charging box 200 further includes a backflow prevention device Q3, wherein the backflow prevention device Q3 is provided between the connection terminal of the switching circuit 23142 and the first power supply electrode 233 and the communication circuit 23141, for preventing the charging current on the charging circuit from flowing backward to the communication circuit 23141.

Specifically, the source of the backflow prevention device Q3 is connected to the other end of the resistor R6, and the drain of the backflow prevention device Q3 is connected to the connection end of the first power supply electrode 233, specifically, the first power supply electrode 233-1 and the first power supply electrode 233-2; the gate of the anti-backflow device Q3 is connected to the reference voltage 3.3V output by the first microprocessor 2314.

Further, the switch circuit 23142 further includes a resistor R7, a diode D4, and a diode D5, wherein the resistor R7 is used to prevent short circuit, and the diode D4 and the diode D5 are used to prevent static electricity. One end of the resistor R7 is connected to the drain of the backflow prevention device Q3 and one end of the diode D5, the other ends of the resistor R7 and the diode D5 are grounded respectively, one end of the diode D4 is connected to the drain of the PMOS transistor Q1, and the other end of the diode D4 is grounded.

The switch circuit 23142 of the present embodiment receives the control signal 5V _ output _ control output by the first microprocessor 2314 to control the PMOS transistor Q1 to be turned on or off, thereby achieving time division multiplexing of charging and communication, and simplifying the circuit.

As shown in fig. 2, the second casing assembly 220 includes a third casing 221 and a fourth casing 222, and the third casing 221 is sleeved outside the fourth casing 222 to form the second casing assembly 220. Referring to fig. 10 in addition to fig. 2, fig. 10 is a schematic structural diagram of an embodiment of the fourth housing in fig. 2. As shown in fig. 10, the fourth housing 222 includes a main plate 2221, a first receiving groove 2222, and a second receiving groove 2223. The first receiving groove 2222 and the second receiving groove 2223 are formed on a side of the main plate 2221 away from the third casing 221, a projection of the first receiving groove 2222 on the support plate 212 coincides with the first profiling area 2131 and a part of the third profiling area 2133, and a projection of the second receiving groove 2223 on the support plate 212 coincides with the second profiling area 2132 and a part of the third profiling area 2133.

When the earphone 100 is placed in the profiling groove 213 and the second housing component 220 is covered on the first housing component 210, the portion of the main body 110 of the earphone 100 exposed out of the profiling groove 213 abuts against the first receiving groove 2222, and the portion of the battery 120 of the earphone 100 exposed out of the profiling groove 213 abuts against the second receiving groove 2223, so as to fix the earphone 100.

As shown in fig. 10, a mounting groove 2224 is further provided on one side of the main board 2221 near the third housing 221 for mounting a first hall sensor (not shown). As shown in fig. 4, a mounting groove 2126 is further provided on a side of the supporting plate 212 facing away from the profiling groove 213 for mounting a second hall sensor (not shown). As shown in fig. 12, the charging box 200 further includes a hall sensor 2316, and the hall sensor 2316 is electrically connected to the first microprocessor 2314, wherein the hall sensor is composed of a first hall sensor and a second hall sensor.

Specifically, when the charging box 200 is opened or closed, the distance between the first hall sensor and the second hall sensor is changed to generate a rising edge or falling edge signal, which is transmitted to the first microprocessor 2314 to inform the first microprocessor 2314 of the information of opening the cover of the charging box 200.

As shown in fig. 12, the charging box 200 further includes an LED2317 disposed on the circuit board 230, and the LED2317 is connected to the first microprocessor 2314. As shown in fig. 8, a first light guide column 236 and a second light guide column 237 are disposed on a side of the circuit board 230 close to the supporting plate 212.

The first case assembly 210 and the second case assembly 220 further form an outer case of the charging box 200, and the charging box 200 further includes an earphone charge amount indicator 2128 provided inside the outer case and a charging box charge amount indicator 2115 visible from the outside of the outer case, for displaying information of the earphone 100 placed in the charging box 200 and information of the charging box 200 itself, respectively.

As shown in FIG. 3, the support plate 212 is provided with an ear phone power indicator light 2128, specifically a first flat area 2122, visible when the second housing component 220 is opened relative to the first housing component 210. The first light guide column 236 is used for guiding light generated by the LED2317 to the earphone power indicator 2128, so that the earphone power indicator 2128 displays corresponding information of the earphone 100 by displaying different colors, specifically including power or pairing of the earphone 100.

The first microprocessor 2314 further selects a relatively small electric quantity from the electric quantities respectively fed back by the two earphones 100, and controls the earphone electric quantity indicator light 2128 to display a light with a corresponding color according to the selected electric quantity.

As shown in fig. 7, the main box body 211 is further provided with a charging box power indicator 2115, and the second light guiding pillar 237 is used for guiding light generated by the LED2317 to the charging box power indicator 2115, so that the charging box power indicator 2115 displays corresponding information of the charging box 200 by displaying different colors, specifically including the power of the charging box 200.

In the present embodiment, the LEDs 2317 are five groups, i.e., a first LED, a second LED, a third LED, a fourth LED and a fifth LED, which respectively generate green light, orange light and white light. Wherein, the first LED, the third LED and the fifth LED are used to display information of the earphone 100, and the second LED and the fourth LED are used to display information of the charging box 200.

The first microprocessor 2314 transmits the power obtained by the power inquiry information to the headset 100 through the communication circuit 23141, and controls the first LED, the third LED or the fifth LED to generate corresponding green light, orange light or white light.

When the lowest electric quantity in the two earphones 100 is less than 30%, the first microprocessor 2314 controls the third LED to be normally on, and when the lowest electric quantity is more than 30%, the first microprocessor 2314 controls the first LED to be normally on. Specifically, the first microprocessor 2314 controls the first LED or the third LED to be normally on for 5s according to the difference of the detected power of the headset 100. When both earphones 100 are in the charging box 200 and the keys of both earphones 100 are pressed for 3 seconds, the earphones 100 enter the pairing state, and the first microprocessor 2314 controls the fifth LED to flash for 3 minutes. If the pairing period is successful, the first microprocessor 2314 controls the fifth LED to be normally on for 5 seconds. If the pairing fails during the period, the first microprocessor 2314 controls the fifth LED to be turned off.

Meanwhile, the first microprocessor 2314 may acquire the remaining power of the charging box 200 by detecting the power of the battery 240. When the first microprocessor 2314 detects that the electric quantity of the battery 240 is greater than 40%, the first microprocessor 2314 controls the second LED to be on, and when the first microprocessor 2314 detects that the electric quantity of the battery 240 is less than 40%, the first microprocessor 2314 controls the fourth LED to be on. Specifically, the first microprocessor 2314 controls the second LED or the fourth LED to be normally on for 5s according to the difference of the detected power of the battery 240.

As shown in fig. 8, a charging interface 235 is further disposed on a side of the circuit board 230 close to the supporting plate 212, and as shown in fig. 7, a through hole 2112 is further disposed on the main case 211. When the circuit board 230 is disposed in the accommodating space 214, the charging interface 235 is clamped in the through hole 2112, so that the charging interface 235 is exposed out of the main box body 211.

The charging box 200 is connected to an external power source through the charging interface 235 to charge the charging box 200. Specifically, the charging interface 235 is connected to the charging circuit 2315, and the battery 240 is further charged by the charging circuit 2315.

Optionally, in this embodiment, the charging circuit 2315 may be specifically a charging management chip having buck charging and boost discharging functions. When the charging box 200 is charged through the charging interface 235, the charging circuit 2315 receives an input voltage to charge the battery 240 using a step-down charging function. When the charging box 200 charges the earphone 100, the charging circuit 2315 boosts the voltage output by the battery 240 to the charging voltage of the earphone 100 by using the boosting discharging function, thereby charging the earphone 100.

Optionally, in other embodiments, the charging circuit 2315 may specifically include a step-down charging circuit and a step-up discharging circuit, and the charging of the charging box 200 and the earphone 100 is implemented by the corresponding circuits.

As shown in fig. 7, the bottom wall of the main case 211 is provided with a positioning block 2119, the positioning block 2119 is specifically a right-angle block, and the four positioning blocks 2119 are symmetrically arranged to form a rectangular parallelepiped for arranging and fixing the position of the battery 240.

As shown in fig. 7, the bottom wall of the main case 211 is further provided with a first mounting hole 2117, a second mounting hole 2116, and a third mounting hole 2118. Among them, the projection of the first and second mounting

holes

2117 and 2116 on the bottom wall of the main case 211 is close to the projection of the first side edge 21211 of the supporting plate 212 on the bottom wall of the main case 211, and the projection of the third mounting hole 2118 on the bottom wall of the main case 211 is close to the projection of the second side edge 21212 of the supporting plate 212 on the bottom wall of the main case 211.

As shown in fig. 8, a first screw hole 2381, a second screw hole 2382 and a third screw hole 2383 are further disposed on one side of the circuit board 230 close to the supporting plate 212. The first screw hole 2381 and the second screw hole 2382 are respectively disposed in the second circuit area 2312 and are close to the first charging electrode 232, the third screw hole 2383 is disposed in the first circuit area 2311, and the third screw hole 2383 coincides with the projection of the second light guiding pillar 237 on the circuit board 230.

After the battery 240 is placed in the accommodating space 214, the circuit board 230 is further disposed on the battery 240 and is respectively inserted into the first mounting hole 2117 and the first screw hole 2381, the second mounting hole 2116 and the second screw hole 2382, and the third mounting hole 2118 and the third screw hole 2383 by screws, so that the circuit board 230 is fixed in the accommodating space 214. Specifically, the side of the circuit board 230 facing away from the support plate 212 abuts the battery 240, further securing the battery 240.

Specifically, the first housing component 210 and the second housing component 220 are rotatably connected by the adapter component 250. Referring further to fig. 11 in conjunction with fig. 2, fig. 11 is a schematic structural diagram of an embodiment of the transfer assembly of fig. 2. As shown in fig. 11, the adaptor assembly 250 includes a connection main plate 251 and a rotation connection plate 252 which are rotatably connected to each other, wherein a mounting groove 254 is formed at a side of the connection main plate 251 adjacent to the support plate 212, and the rotation connection plate 252 is disposed in the mounting groove 254.

In which opposite sides of the connecting main plate 251 form a first boss 2511 and a second boss 2512, and a third side adjacent to the two sides forms a third boss 2513. The first boss 2511 is provided with a first mounting hole (not shown), the second boss 2512 is provided with a second mounting hole (not shown), and the third boss 2513 is provided with a third mounting hole (not shown).

As shown in fig. 7, an opening 2111 is formed in a side wall of the main case 211 adjacent to the first side edge 21211 of the support plate 212. Further, the main box 211 further includes a mounting seat 2114 disposed on an inner wall of the sidewall where the opening 2111 is formed, and specifically includes a supporting seat and three screw holes.

When the first housing assembly 210 and the adapting assembly 250 are disposed in a matching manner, the connection main board 251 is disposed in the opening 2111, the first mounting hole and the screw hole of the mounting seat 2114 are fixed by a first screw 2531, the second mounting hole and the screw hole of the mounting seat 2114 are fixed by a second screw 2532, and the third mounting hole and the screw hole of the mounting seat 2114 are fixed by a third screw 2533.

When the second housing component 220 is disposed in cooperation with the adapter component 250, the rotating connection plate 252 and the second housing component 220 can be connected and fixed by means of screws and screw holes, blind holes and blind pillars or magnets. The charging tray 200 rotates the second housing member 220 by rotating the connection plate 252 so that the second housing member 220 can be opened with respect to the first housing member 210.

The rotation angle of the first housing element 210 relative to the second housing element 220 may range from 0 ° to 90 °, and when the second housing element 220 is covered on the first housing element 210, the included angle between the second housing element 220 and the first housing element 210 is specifically 0 °, and when the second housing element 220 is completely opened relative to the first housing element 210, the included angle between the second housing element 220 and the first housing element 210 is specifically 90 °.

Alternatively, when the included angle between the rotating connection plate 252 and the plane parallel to the support plate 212 of the connection main plate 251 is greater than a predetermined angle, the rotating connection plate 252 drives the second housing assembly 220 to move to the fully opened state, and the predetermined angle may be 45 ° or 30 °.

As shown in fig. 10, a magnet mounting groove 2225 is further disposed on a side of the main board 2221 close to the third housing 221, wherein the magnet mounting groove 2225 is disposed close to a side of the main board 2221 adjacent to the second side edge 21212 of the supporting plate 212 for mounting a third magnet (not shown). As shown in fig. 4, a magnet mounting groove 21253 is further disposed on a side of the supporting plate 212 facing away from the profiling groove 213, and the magnet mounting groove 21253 is disposed near the second side edge 21212 for mounting a fourth magnet (not shown).

When the second housing assembly 220 is covered on the first housing assembly 210, the third magnet and the fourth magnet attract each other, so that the position of the second housing assembly 220 relative to the first housing assembly 210 is kept unchanged, even if the charging box 200 is always in the closed state, and the closing reliability of the charging box 200 is improved.

Referring further to fig. 19 in conjunction with fig. 16-18, fig. 19 is a circuit diagram of an embodiment of the earphone of the present application. As shown in fig. 19, the earphone 100 further includes an electrostatic protection circuit 114 and an audio power amplifier 113, the audio power amplifier 113 is connected to the second microprocessor 112, the electrostatic protection circuit 114 is respectively connected to the audio power amplifier 113 and the second microprocessor 112, and the electrostatic protection circuit 114 is configured to convert an ac signal output by the audio power amplifier 113 into a dc signal. When the voltage value of the dc signal is smaller than the threshold voltage, the second microprocessor 112 determines that the audio power amplifier 113 operates abnormally, and the second microprocessor 112 sends a reset signal to the audio power amplifier 113 to reset the audio power amplifier 113.

Specifically, since the second microprocessor 112 is connected to the electrostatic protection circuit 114 through the I/O port, the pin of the I/O port divides the voltage input to the second microprocessor 112 to generate a divided voltage, and the second microprocessor 112 can determine whether the output voltage of the electrostatic protection circuit 114 is abnormal by detecting the voltage value of the divided voltage and comparing the voltage value with the threshold voltage, thereby determining whether the audio power amplifier 113 is working abnormally.

As shown in fig. 19, the esd protection circuit 114 includes a resistor R9, a capacitor C3, a diode D7, and a diode D8. The anode of the diode D7 is connected to the first output terminal of the audio power amplifier 113, the anode of the diode D8 is connected to the second output terminal of the audio power amplifier 113, the anodes of the diodes D7 and the anode of the diode D8 receive two ac signals output by the audio power amplifier 113, the cathode of the diode D7 is connected to the cathode of the diode D8 and one end of the resistor R9, the other end of the resistor R9 is connected to the I/O port of the second microprocessor 112 and one end of the capacitor C3, and the other end of the capacitor C3 is grounded. The other end of the capacitor C3 and the other end of the resistor R9 form an output terminal of the esd protection circuit 114.

In this embodiment, the electrostatic protection circuit 114 is disposed between the audio power amplifier 113 and the second microprocessor 112, and the second microprocessor 112 performs voltage detection on the I/O pin connected to the output terminal of the electrostatic protection circuit 114, so as to implement detection of the state of the audio power amplifier 113.

The above embodiments are merely examples, and not intended to limit the scope of the present application, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present application, or those directly or indirectly applied to other related arts, are included in the scope of the present application.

Claims

1. The charging box is characterized by comprising a first shell assembly, wherein the first shell assembly comprises a main box body with one open end and a supporting plate covering the open end of the main box body, and a profiling groove for accommodating an earphone is arranged on the supporting plate;

2. A charging box according to claim 1, further comprising a circuit board provided between the support plate and the bottom wall of the main box body, a projection of the circuit board on the bottom wall of the main box body being close to a projection of the second side edge on the bottom wall of the main box body.

3. A charging box according to claim 2, wherein the profiling recess comprises a first profiling region provided adjacent the first side edge for receiving a body portion of a headset, a second profiling region provided adjacent the second side edge for receiving a battery portion of the headset and a third profiling region connecting the first and second profiling regions for receiving a resilient connection portion of the headset, wherein the depth of a part of the third profiling region adjacent the first side edge is greater than the depth of the second profiling region.

4. A charging box according to claim 3, wherein the number of the copying grooves is two, the interval between the third copying regions of two copying grooves is gradually decreased and then gradually increased in the direction from the first side edge to the second side edge, the support plate includes a first flat region located between the third copying regions of two copying grooves and near the second side edge, and a projection of the circuit board on the bottom wall of the main box body overlaps with a projection of the first flat region on the bottom wall of the main box body.

5. A charging box according to claim 4, characterized in that said support plate is further provided with a third side edge and a fourth side edge opposite to each other for connecting said first side edge and second side edge, said support plate further comprising two second flat zones located on both sides of said third contoured zone of said two contoured recesses and respectively close to said third side edge and said fourth side edge, wherein the projection of said circuit board on the bottom wall of said main box body further overlaps the projection of at least one of said two second flat zones on the bottom wall of said main box body.

6. The charging case according to claim 5, wherein the circuit board includes a first circuit region, a second circuit region, and a connection region, wherein a projection of the first circuit region on the bottom wall of the main case body overlaps a projection of the first flat region on the bottom wall of the main case body, a projection of the second circuit region on the bottom wall of the main case body overlaps a projection of the second flat region on the bottom wall of the main case body, the connection region connects the first circuit region and the second circuit region, and a projection of the connection region on the bottom wall of the main case body overlaps a projection of the second copying region on the bottom wall of the main case body.

7. The charging box according to claim 6, wherein an overlapping area of said connection region and said second profiling region is smaller than an overlapping area of said first circuit region and said first flat region and an overlapping area of said second circuit region and said second flat region.

8. The charging box according to claim 6, wherein the number of the second circuit regions and the connection regions is two, and the two sets of the second circuit regions and the connection regions are connected to both ends of the first circuit region in the interval direction of the third side edge and the fourth side edge, respectively, so that the circuit board is arranged in a U shape as a whole.

9. The charging box according to claim 6, wherein a depth of a partial region of the third profiling region near the first side edge is greater than a depth of the first profiling region, and a projection of the second circuit region on the bottom wall of the main box body further overlaps a projection of the first profiling region on the bottom wall of the main box body.

10. The charging box of claim 6, wherein the overlapping area of the projection of the circuit board on the bottom wall of the main box body and the projection of the third profiling area on the bottom wall of the main box body is less than 5% of the total projection area of the circuit board on the bottom wall of the main box body.

11. A charging cartridge as claimed in claim 3, wherein a line between the lowest point of the third profiled region and the highest point of the second profiled region makes an angle in the range of 10 ° to 60 ° with a plane parallel to a side of the support plate on which the profiled recess is formed.

12. The charging box of claim 1, further comprising a second housing assembly pivotally connected to the first housing assembly, and a switching assembly disposed at the first side edge of the supporting plate for connecting the first housing assembly to the second housing assembly, wherein the first housing assembly is pivotally connected to the second housing assembly via the switching assembly.