Charger

Abstract

The embodiment of the utility model provides a charger. The charger comprises a housing, a charging circuit board and a support member. An accommodating space is formed in the shell; the charging circuit board comprises a circuit substrate and a charging circuit arranged on the circuit substrate, the charging circuit comprises a transformer, and the circuit substrate is mounted in the accommodating space; the supporting piece comprises a first supporting part which is arranged at an interval with the circuit substrate, the transformer is arranged on the side, away from the circuit substrate, of the first supporting part, and the first supporting part protrudes towards the side where the transformer is arranged so as to form a first limiting part located between the transformer and the shell. According to the charger provided by the embodiment of the utility model, circuit elements can be stacked, the space utilization rate is improved, and the size of the charger can be reduced; moreover, the creepage distance between circuit elements is increased, and electrical isolation is realized. And the transformer can be prevented from moving to interfere with the shell, so that the transformer is stably arranged, and the probability of damage to circuit elements such as the transformer is reduced.

Description

Technical Field

[0001] This utility model relates to the field of charging technology, and in particular to a charger. Background Technology

[0002] Chargers are a common household device used in people's daily lives. Many electronic products, such as mobile phones, computers, and wearable electronic devices, use chargers.

[0003] Currently, in existing charger designs, high-voltage and low-voltage circuits are typically separated into different circuit boards, often consisting of two or more boards arranged in a three-dimensional configuration to achieve a more compact internal structure. However, this circuit board design is prone to interference between different components, and the overall structural stability is difficult to guarantee. Utility Model Content

[0004] Based on this, the present invention provides a charger that reduces interference and improves the stability of internal components.

[0005] This utility model provides a charger, including: a housing with a receiving space; a charging circuit board including a circuit board and a charging circuit disposed on the circuit board, the charging circuit including a transformer, the circuit board being mounted in the receiving space; and a support member including a first support portion spaced apart from the circuit board, the transformer being disposed on the side of the first support portion away from the circuit board, the first support portion protruding toward the side where the transformer is disposed to form a first limiting portion, and the first limiting portion being located between the transformer and the housing.

[0006] In some embodiments, the housing includes a base and a cover, the base and the cover forming the receiving space, the first support portion being located on the side of the receiving space away from the base, and the first limiting portion being located on the side of the first support portion opposite to the base.

[0007] In some embodiments, the charging circuit includes a first capacitor, and a first mounting space is formed between the first support and the base, with the first capacitor disposed in the first mounting space.

[0008] In some embodiments, the support member includes a second support portion connected to the first support portion, the second support portion being spaced apart from the circuit board, and the charging circuit further includes a second capacitor disposed on the side of the second support portion away from the circuit board, the second support portion protruding toward the side where the second capacitor is disposed to form a second limiting portion, the second limiting portion being located between the second capacitor and the outer casing.

[0009] In some embodiments, the side of the first support portion facing away from the circuit board has a first distance from the circuit board, and the side of the second support portion facing away from the circuit board has a second distance from the circuit board, the second distance being smaller than the first distance.

[0010] In some embodiments, the support member further includes a second connecting portion extending toward the circuit board, the second connecting portion connecting the second support portion and the circuit board, and the first support portion and the second support portion being arranged parallel to each other.

[0011] In some embodiments, the housing includes a base and a cover, the cover having a first surface opposite to the base and a second surface connecting the first surface and the cover, the second support portion being located on the side of the first support portion near the intersection of the first surface and the second surface; the second limiting portion further includes a first limiting sub-part being located on the side of the second support portion near the intersection of the first surface and the second surface.

[0012] In some embodiments, the second limiting portion further includes a second limiting sub-portion, which is located on the side of the second limiting portion away from the transformer, and a gap is formed between the first limiting sub-portion and the second limiting sub-portion.

[0013] In some embodiments, the housing includes a base and a cover, and the second support protrudes from the edge of the circuit board on the side opposite to the cover and the transformer.

[0014] In some embodiments, a first through hole is formed on the first support portion, and a first pin is provided on the transformer, with the first pin passing through the first through hole.

[0015] In some embodiments, a first guide surface is formed on the side of the first through hole away from the circuit board; or, the first through hole is a tapered hole, the diameter of which gradually decreases toward the circuit board.

[0016] In some embodiments, a mounting groove is formed on the side of the first support portion away from the circuit board, the first through hole is disposed at the bottom of the mounting groove, and the first pin is also disposed in the mounting groove.

[0017] In some embodiments, the charger further includes a heat spreader and an insulating member, the insulating member being at least partially mounted on the first support portion and surrounding a portion of the charging circuit on the side of the circuit board facing the first support portion; the heat spreader is disposed on the side of the insulating member facing the housing and is at least attached to a portion of the insulating member near the circuit board.

[0018] In some embodiments, the circuit board divides the accommodating space into a first space and a second space, the second space being larger than the first space, the first support portion being located in the second space, the first space being provided with an output interface, and the first limiting portion being located above the output interface.

[0019] The present invention provides at least the following beneficial effects:

[0020] The charger provided in this embodiment of the utility model uses a support member on the circuit board, including a first support portion spaced apart from the circuit board, to enable the stacking of circuit components. This improves the space utilization of the storage space, helps to reduce the size of the charger, and the first support portion can increase the creepage distance between circuit components, achieving electrical isolation between circuit components on both sides. Simultaneously, the transformer is mounted on the first support portion, making assembly more convenient. Furthermore, a first limiting portion is provided to limit the transformer, preventing it from moving and interfering with the casing, ensuring stable installation of the transformer, and reducing the probability of damage to circuit components within the storage space, including the transformer. Attached Figure Description

[0021] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the external structure of a charger provided in one embodiment of the present invention.

[0023] Figure 2 for Figure 1 A schematic diagram of the internal structure of the charger.

[0024] Figure 3 for Figure 2 An enlarged schematic diagram of region A in the middle.

[0025] Figure 4 for Figure 1 Another schematic diagram of the internal structure of the charger in the image.

[0026] Figure 5 for Figure 1 An exploded view of the internal structure of the charger.

[0027] Figure 6 for Figure 1 Another schematic diagram of the internal structure of the charger in the image.

[0028] Explanation of reference numerals in the attached drawings: 10. Outer shell; 11. Receiving space; 111. First space; 112. Second space; 1121. First mounting space; 12. Base; 13. Shell cover; 131. Charging port; 132. First side; 133. Second side; 20. Charging circuit board; 21. Circuit board; 22. Charging circuit; 221. Transformer; 222. First capacitor; 223. Second capacitor; 23. First pin; 24. Output interface; 25. Pin; 26. Low-voltage wire; 30. Support member; 31. First support part; 311. First through hole; 312. First guide surface; 313. Mounting groove; 314. Second through hole; 32. First limiting part; 33. Second support part; 34. Second limiting part; 341. First limiting sub-part; 342. Second limiting sub-part; 35. Notch; 36. First connecting part; 37. Second connecting part; 40. Heat-spreading member; 50. Insulating member. Detailed Implementation

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0030] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0031] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0032] It should also be noted that the division of multiple embodiments in this utility model is only for the convenience of description and should not constitute a special limitation. Features in various embodiments can be combined and referenced in each other without contradiction.

[0033] In existing charger designs, multiple circuit boards are typically used to accommodate different chips and circuit components in order to be compatible with various charging protocols. However, the design of multiple circuit boards is not conducive to the miniaturization of chargers, and different components or structures are prone to interference with each other, which is not conducive to the stable setting of internal components of the charger.

[0034] Based on this, see Figures 1 to 4 This utility model provides a charger, including a housing 10, a charging circuit board 20, and a support member 30. The housing 10 forms a receiving space 11. The charging circuit board 20 includes a circuit board 21 and a charging circuit 22 disposed on the circuit board 21. The charging circuit 22 includes a transformer 221, and the circuit board 21 is mounted in the receiving space 11. It is understood that the charging circuit 22 refers to a circuit for realizing the charging function, including circuit elements for realizing the charging function and electrical lines for realizing the electrical connection between circuit elements.

[0035] The outer casing 10 includes, for example, a base 12 and a cover 13 connected to each other, which together form a receiving space 11. The base 12 may have a mounting structure, and the circuit board 21 is connected to the base 12 via the mounting structure and thus disposed within the receiving space 11. Specifically, for example, a pin 25 is provided on the base 12 for connecting the charging circuit 22 to an external circuit of the charger. The cover 13 has a charging port 131 on the side opposite to the base 12. The charging circuit 22 includes an output interface 24, which is located at the charging port 131 and is used to connect the charging circuit 22 to an external circuit of the charger.

[0036] The support member 30 includes a first support portion 31 spaced apart from the circuit board 21. A transformer 221 is disposed on the side of the first support portion 31 facing away from the circuit board 21. The first support portion 31 protrudes towards the side where the transformer 221 is located to form a first limiting portion 32, which is located between the transformer 221 and the housing 10. The first support portion 31 and the circuit board 21 are spaced apart, allowing circuit elements to be disposed between the circuit board 21 and the first support portion 31. Furthermore, the transformer 221 is further disposed on the side of the first support portion 31 facing away from the circuit board 21, thus enabling the stacking of circuit elements and improving the space utilization of the accommodating space 11. The first support portion 31 can also separate the circuit elements on both sides, thereby increasing the creepage distance, achieving electrical isolation, and reducing the probability of the charging circuit 22 being damaged. Moreover, the transformer 221 being disposed on the first support portion 31 facilitates assembly, thereby improving assembly efficiency and reducing costs. Specifically, the first support portion 31 is, for example, flat, which can further improve the stability of the transformer 221 mounted on the first support portion 31.

[0037] Understandably, the first limiting part 32 protrudes towards the side of the first support part 31 where the transformer 221 is mounted, thereby abutting against the transformer 221 to restrict its movement and achieve stable mounting of the transformer 221. Furthermore, the first limiting part 32 is located between the transformer 221 and the outer casing 10, thus preventing interference between the transformer 221 and the outer casing 10, thereby reducing the probability of damage to the circuit components within the housing space 11, including the transformer 221. Specifically, the first limiting part 32 is located, for example, at the edge of the first support part 31 near the outer casing 10, thereby effectively utilizing space and facilitating the mounting of the transformer 221.

[0038] The charger of this embodiment of the utility model uses a support member 30 on the circuit board 21. The support member 30 includes a first support portion 31 spaced apart from the circuit board 21, which enables the stacking of circuit components, improves the space utilization of the housing space 11, and helps to reduce the size of the charger. In addition, the first support portion 31 can increase the creepage distance between circuit components, achieving electrical isolation between circuit components on both sides. At the same time, the transformer 221 is set on the first support portion 31, making assembly more convenient. Furthermore, a first limiting portion 32 is provided to limit the transformer 221 to prevent the transformer 221 from moving and interfering with the housing 10, and to ensure the stable setting of the transformer 221, reducing the probability of damage to the circuit components in the housing space 11, including the transformer 221.

[0039] Specifically, the support 30 is made of an insulating material, such as one or more of polybutylene terephthalate, nylon, liquid crystal polymer, epoxy resin, etc.

[0040] In some specific embodiments, see Figure 2 and Figure 3 The dimensions of the circuit board 21 correspond to the dimensions of the housing 10. For example, the length and width of the circuit board 21 correspond to the length and width of the housing 10. Therefore, when the circuit board 21 is installed in the receiving space 11, the receiving space 11 can be divided into a first space 111 and a second space 112 located on opposite sides of the circuit board 21. Furthermore, the second space 112 is larger than the first space 111, allowing circuit components of different sizes to be placed in the first space 111 and the second space 112. This optimizes the layout of circuit components within the housing 10, ensuring the circuit components are fully filled, improving the utilization rate of space within the housing 10, and thus helping to reduce the size of the charger. For example, the first support portion 31 is provided in the second space 112, which further houses larger circuit components such as a transformer 221 and a capacitor. The dimensions of the second space 112 and the first space 111 can be determined based on the height of the circuit components.

[0041] Specifically, the output interface 24 is located in the first space 111, and the first limiting part 32 is located above the output interface 24. It is understood that the output interface 24 can come into contact with the outside, such as a human body. By placing the output interface 24 and the transformer 221 in different spaces, the creepage distance is increased, and safety is improved. Furthermore, the first limiting part 32 is further provided on the output interface 24, thereby further increasing the creepage distance and further improving safety.

[0042] In some specific embodiments, see Figure 2 and Figure 3 The first support portion 31 is located on the side of the accommodating space 11 away from the base 12, and the first limiting portion 32 is located on the side of the first support portion 31 opposite to the base 12. Thus, the first support portion 31 being located on one side of the accommodating space 11 helps to leave a larger and more complete space for circuit components, facilitating the installation of larger circuit components, optimizing the layout of circuit components, and improving the space utilization of the second space 112. The first limiting portion 32 being located on the side of the first support portion 31 opposite to the base 12 can restrict the transformer 221 from moving towards the side of the first support portion 31 opposite to the base 12, thereby preventing interference between the transformer 221 and the portion of the cover 13 opposite to the base 12.

[0043] Further, see Figure 2 The charging circuit 22 includes a first capacitor 222. A first mounting space 1121 is formed between the first support 31 and the base 12. The first capacitor 222 is disposed in the first mounting space 1121. The first capacitor 222 is, for example, a cylindrical high-voltage electrolytic capacitor. Since the first mounting space 1121 is formed between the first support 31 and the base 12, the first mounting space 1121 does not occupy space occupied by the first support 31. Therefore, the first mounting space 1121 has a larger space, which facilitates the installation of larger capacitors and helps to improve the performance of the charger.

[0044] In some embodiments, see Figure 2 and Figure 4The support member 30 includes a second support portion 33 connected to the first support portion 31. The second support portion 33 is spaced apart from the circuit board 21. The charging circuit 22 also includes a second capacitor 223, which is located on the side of the second support portion 33 away from the circuit board 21. The second capacitor 223 is, for example, a cylindrical low-voltage solid capacitor. The second support portion 33 protrudes from the edge of the outer shell 10 toward the side where the second capacitor 223 is located to form a second limiting portion 34. The second support portion 33 can support the second capacitor 223, thereby preventing the second capacitor 223 from being suspended and facilitating its assembly. Furthermore, circuit elements can be arranged between the second support portion 33 and the circuit board 21, enabling the stacking of circuit elements and further improving the space utilization of the accommodating space 11, which helps to reduce the size of the charger. At the same time, the second support portion 33 can increase the electrical distance between circuit elements, achieving electrical isolation between the circuit elements on both sides of the second support portion 33, thereby reducing the probability of circuit breakdown.

[0045] Understandably, the second limiting part 34 protrudes towards the side of the second support part 33 where the second capacitor 223 is located. The second limiting part 34 is situated between the second capacitor 223 and the outer casing 10, allowing it to abut against the second capacitor 223 and restrict its movement, thus achieving stable placement of the second capacitor 223. Furthermore, the second limiting part 34 is located near the edge of the second support part 33 close to the outer casing 10, preventing the second capacitor 223 from moving and interfering with the outer casing 10, thereby reducing the likelihood of damage to the circuit components within the housing space 11, including the second capacitor 223. The second limiting part 34 also prevents the second capacitor 223 from tilting, further preventing interference between the second capacitor 223 and the outer casing 10, and avoiding problems such as damage to the solder joints of the second capacitor 223.

[0046] In some specific embodiments, see Figure 2 and Figure 4 The first support portion 31 and the second support portion 33 are arranged in parallel to facilitate the installation of the transformer 221 and the second capacitor 223, making the installation of the transformer 221 and the second capacitor 223 more stable. The second capacitor 223 is arranged perpendicular to the second support portion 33 for convenient and stable installation, and can reduce the area of ​​the circuit board 21 occupied by the second capacitor 223. The second limiting portion 34 protrudes vertically from the second support portion 33 to keep the second capacitor 223 vertical, prevent the second capacitor 223 from tilting, and further prevent interference between the second capacitor 223 and the housing 10. Specifically, the circuit board 21 is arranged parallel to the first support portion 31 and the second support portion 33, so that the space created is regular and facilitates the layout of circuit components.

[0047] Specifically, see Figure 5The side of the first support portion 31 facing away from the circuit board 21 has a first distance from the circuit board 21, and the side of the second support portion 33 facing away from the circuit board 21 has a second distance from the circuit board 21, the second distance being less than the first distance. Figure 5 In the diagram, L1 indicates the first distance, and L2 indicates the second distance. That is to say, the second support portion 33 is closer to the circuit board 21 than the first support portion 31. Therefore, it can be understood that the height of the space on the side of the second support portion 33 away from the circuit board 21 is higher than the height of the space on the side of the first support portion 31 away from the circuit board 21. Therefore, a second capacitor 223 with a higher height can be installed on the second support portion 33, which helps to improve the performance of the charger.

[0048] In some embodiments, the support member 30 further includes a first connecting portion 36 and a second connecting portion 37 extending toward the circuit board 21. The first connecting portion 36 connects the first support portion 31 and the circuit board 21, and the second connecting portion 37 connects the second support portion 33 and the circuit board 21. Thus, the first support portion 31 and the second support portion 33 are separated from the circuit board 21 by the first connecting portion 36 and the second connecting portion 37, forming a space to accommodate electronic components and improving space utilization. For example, the first connecting portion 36 and the second connecting portion 37 can be connected to provide more stable support for the first support portion 31 and the second support portion 33, and also facilitate spatial separation between the first connecting portion 36 and the second connecting portion 37, separating different electronic components into different spaces and isolating them. This increases the creepage distance between different electronic components and improves safety.

[0049] Specifically, see Figure 2 and Figure 4 The cover 13 has a first surface 132 opposite to the base 12 and a second surface 133 connecting the first surface 132 and the cover 13. The second support portion 33 is located on the side of the first support portion 31 near the intersection of the first surface 132 and the second surface 133. This facilitates the placement of other circuit components and avoids the problem of dividing the accommodating space 11 into multiple fragmented spaces due to their corresponding placement in the middle of the circuit board 21, which would be detrimental to the layout of the circuit components. Specifically, the second limiting portion 34 also includes a first limiting sub-portion 341, which is located on the side of the second support portion 33 near the intersection of the first surface 132 and the second surface 133. Thus, the second capacitor 223 is located between the first limiting sub-portion 341 and the transformer 221. The second capacitor 223 can be simultaneously limited by the first limiting sub-portion 341 and the transformer 221, thereby further preventing the capacitor from moving and further preventing the second capacitor 223 from tilting.

[0050] Further, see Figure 2 and Figure 4The second limiting part 34 also includes a second limiting sub-part 342, which is located on the side of the second limiting part 34 away from the transformer 221. A gap 35 is formed between the first limiting sub-part 341 and the second limiting sub-part 342. That is, the second capacitor 223 is also located between the second limiting sub-part 342 and the transformer 221. Therefore, the second capacitor 223 can be simultaneously limited by the second limiting sub-part 342 and the transformer 221, thereby further preventing capacitor movement and further preventing the second capacitor 223 from tilting. The notch 35 helps to accommodate the shape of the second capacitor 223, increases the contact area between the first limiting sub-part 341 and the second limiting sub-part 342 and the second capacitor 223, and facilitates the first limiting sub-part 341 and the second limiting sub-part 342 in limiting the second capacitor 223. For example, the second capacitor 223 is cylindrical, and the side of the first limiting sub-part 341 and the second limiting sub-part 342 facing the second capacitor 223 is an arc surface, so that it can fit better with the second capacitor 223.

[0051] In some specific embodiments, the second support portion 33 protrudes from the edge of the circuit board 21 on the side opposite to the housing cover 13 and the transformer 221, so as to increase the area of ​​the second support portion 33 without further occupying the area of ​​the circuit board 21, thereby facilitating the installation of a larger second capacitor 223 and helping to improve the performance of the charger.

[0052] In some embodiments, see Figure 2 and Figure 5 A first through hole 311 is formed on the first support portion 31, and a first pin 23 is provided on the transformer 221. The transformer 221 is located above the first through hole 311, and the first pin 23 passes through the first through hole 311. Thus, the transformer 221 can be electrically connected to the charging circuit 22 on the circuit board 21 through the first pin 23 passing through the first through hole 311. The wall of the first through hole 311 can increase the creepage distance between the first pin 23 and other circuit components and provide electrical isolation for the first pin 23, reducing the probability of circuit breakdown. Specifically, the transformer 221 is located above the first through hole 311, which can further reduce the probability of circuit breakdown between the first pin 23 and other circuit components. Specifically, there can be multiple first through holes 311, arranged in one direction, so that multiple first pins 23 can pass through different first through holes 311 respectively, further reducing the probability of circuit breakdown between the first pin 23 and other circuit components. For example, the first pin 23 can be a high-voltage pin, which would provide greater safety.

[0053] Specifically, see Figure 4For example, a low-voltage line 26 is also provided to connect other circuit components to the transformer 221. The low-voltage line 26 is located away from the first pin 23. Furthermore, there are two low-voltage lines 26, for example. The first support 31 and the second support 33 are respectively provided with second through holes 314. The two low-voltage lines 26 are respectively passed through the second through holes 314. This facilitates the routing of the low-voltage lines 26 and also helps to increase the creepage distance between the low-voltage lines 26 and other circuit components, thereby reducing the probability of current breakdown.

[0054] Specifically, see Figure 2 and Figure 3 A first guide surface 312 is formed on the side of the first through hole 311 facing away from the circuit board 21. The first guide surface 312 can guide the first pin 23 during installation, thereby facilitating installation, improving the installation efficiency of the transformer 221, and reducing costs. The first guide surface 312 is, for example, a tapered surface, which has a good guiding effect and is more conducive to the installation of the transformer. The first through hole 311 is also, for example, a tapered hole, the diameter of which gradually decreases towards the circuit board 21, thereby guiding and facilitating centering installation, while also helping to improve the stress distribution of the first support 31.

[0055] Specifically, see Figure 2 and Figure 3 A mounting groove 313 is formed on the side of the first support portion 31 facing away from the circuit board 21. A first through hole 311 is located at the bottom of the mounting groove 313, and the first pin 23 is also located in the mounting groove 313. Thus, the mounting groove 313 can further isolate the first pin 23 from other circuit components and further increase the creepage distance between the first pin 23 and other circuit components, further reducing the probability of circuit breakdown. Furthermore, the transformer 221 is located above the mounting groove 313, which can further reduce the probability of circuit breakdown between the first pin 23 and other circuit components. On the other hand, providing the mounting groove 313 can reduce the thickness at the first through hole 311, preventing the first support portion 31 from shrinking and deforming due to thermal expansion and contraction during injection molding.

[0056] In some embodiments, see Figure 6The charger also includes an insulating member 50, which is at least partially mounted on the first support portion 31. The insulating member 50 surrounds a portion of the charging circuit 22 on the side of the circuit board 21 facing the first support portion 31. Because the first support portion 31 is spaced apart from the circuit board 21, the insulating member 50 can also form a gap with the circuit board 21, thus allowing the insulating member 50 to avoid structures such as solder pads on the circuit board, preventing the insulating member 50 from being punctured by solder pads and creating safety hazards. The insulating member 50 can electrically isolate the circuit components in the space 11 from the outside, reducing the probability of circuit breakdown and helping to improve the safety of the charger. The material of the insulating member 50 is one or more of PET (polyethylene terephthalate), polyimide, polytetrafluoroethylene, mica sheets, etc. Furthermore, the insulating member 50 located in the first mounting space 1121 extends further below the first support portion 31 to further cover the circuit components, thereby improving the insulation effect. The insulating member 50 has, for example, four sides, and together with the base 12 and the circuit board 21, it surrounds the circuit elements such as the transformer 221, the first capacitor 222, and the second capacitor 223 in the second space 112. In this way, the insulating member 50 has four sides, which can more comprehensively cover the circuit elements, thereby improving the insulation effect.

[0057] Specifically, see Figure 6 The charger also includes a heat spreader 40, which is located on the side of the insulating member 50 facing the outer casing 10 and is attached at least to the portion of the insulating member 50 near the circuit board 21. Thus, the heat spreader 40 can also be spaced from the circuit board 21 to avoid structures such as solder pads on the circuit board, preventing the heat spreader 40 from being punctured by solder pads and creating a safety hazard. The heat spreader 40 can conduct heat, dispersing the localized heat from the circuit components to the entire heat spreader 40, thereby increasing the heat dissipation area, improving heat dissipation efficiency, and preventing heat accumulation that could lead to localized high temperatures and safety hazards. The material of the heat spreader 40 can be, for example, copper foil or graphene disposed on the surface of the insulating member 50, or it can include both copper foil and graphene. Specifically, the heat spreader 40 has four sides and together with the base 12 and the circuit board 21, it surrounds the circuit components such as the transformer 221, the first capacitor 222, and the second capacitor 223 in the second space 112. In this way, the heat spreader 40 has four sides, which can more comprehensively cover the circuit components, thereby increasing the heat dissipation area and improving the heat dissipation effect.

[0058] Understandably, the heat spreader 40 was cut open to clearly show the insulating component 50. Figure 6 The surface of the exposed insulating component 50 is also covered with a heat-spreading component 40.

[0059] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A charger, characterized in that, include: The outer shell (10) forms a receiving space (11); The charging circuit board (20) includes a circuit board (21) and a charging circuit (22) disposed on the circuit board (21), the charging circuit (22) including a transformer (221), and the circuit board (21) is mounted in the receiving space (11); The support member (30) includes a first support portion (31) spaced apart from the circuit board (21), the transformer (221) is disposed on the side of the first support portion (31) away from the circuit board (21), the first support portion (31) protrudes toward the side where the transformer (221) is disposed to form a first limiting portion (32), and the first limiting portion (32) is located between the transformer (221) and the outer casing (10).

2. The charger according to claim 1, characterized in that, The outer shell (10) includes a base (12) and a cover (13), the base (12) and the cover (13) forming the accommodating space (11), the first support (31) is located on the side of the accommodating space (11) away from the base (12), and the first limiting part (32) is provided on the side of the first support (31) away from the base (12).

3. The charger according to claim 2, characterized in that, The charging circuit (22) includes a first capacitor (222), and a first mounting space (1121) is formed between the first support (31) and the base (12), and the first capacitor (222) is disposed in the first mounting space (1121).

4. The charger according to claim 1, characterized in that, The support member (30) includes a second support portion (33), which is connected to the first support portion (31). The second support portion (33) is spaced apart from the circuit board (21). The charging circuit (22) also includes a second capacitor (223), which is located on the side of the second support portion (33) away from the circuit board (21). The second support portion (33) protrudes toward the side where the second capacitor (223) is located to form a second limiting portion (34). The second limiting portion (34) is located between the second capacitor (223) and the outer shell (10).

5. The charger according to claim 4, characterized in that, The side of the first support portion (31) facing away from the circuit board (21) has a first distance from the circuit board (21), and the side of the second support portion (33) facing away from the circuit board (21) has a second distance from the circuit board (21), the second distance being less than the first distance.

6. The charger according to claim 5, characterized in that, The support member (30) further includes a second connecting portion (37) extending toward the circuit board (21), the second connecting portion (37) connecting the second support portion (33) and the circuit board (21), the first support portion (31) and the second support portion (33) being arranged in parallel.

7. The charger according to claim 5, characterized in that, The outer shell (10) includes a base (12) and a cover (13). The cover (13) has a first surface (132) opposite to the base (12) and a second surface (133) connecting the first surface (132) and the cover (13). The second support (33) is located on the side of the first support (31) near the intersection of the first surface (132) and the second surface (133). The second limiting part (34) also includes a first limiting sub-part (341), which is located on the side of the second support (33) near the intersection of the first surface (132) and the second surface (133).

8. The charger according to claim 7, characterized in that, The second limiting part (34) further includes a second limiting sub-part (342), which is located on the side of the second limiting part (34) away from the transformer (221), and a gap (35) is formed between the first limiting sub-part (341) and the second limiting sub-part (342).

9. The charger according to claim 7, characterized in that, The outer casing (10) includes a base (12) and a cover (13), and the second support (33) protrudes from the edge of the circuit board (21) on the side opposite to the cover (13) and the transformer (221).

10. The charger according to claim 1, characterized in that, A first through hole (311) is formed on the first support part (31), and a first pin (23) is provided on the transformer (221), with the first pin (23) passing through the first through hole (311).

11. The charger according to claim 10, characterized in that, The first through hole (311) has a first guide surface (312) formed on the side away from the circuit board (21); or, the first through hole (311) is a tapered hole, and the diameter of the tapered hole gradually decreases in the direction of the circuit board (21).

12. The charger according to claim 10, characterized in that, The first support portion (31) has a mounting groove (313) formed on the side away from the circuit board (21), the first through hole (311) is located at the bottom of the mounting groove (313), and the first pin (23) is also located in the mounting groove (313).

13. The charger according to claim 1, characterized in that, The charger further includes a heat spreader (40) and an insulating member (50). The insulating member (50) is at least partially mounted on the first support portion (31). The insulating member (50) surrounds a portion of the charging circuit (22) on the side of the circuit board (21) facing the first support portion (31). The heat spreader (40) is disposed on the side of the insulating member (50) facing the outer casing (10). The heat spreader (40) is at least attached to the portion of the insulating member (50) near the circuit board (21).

14. The charger according to claim 1, characterized in that, The circuit board (21) divides the accommodating space (11) into a first space (111) and a second space (112). The second space (112) is larger than the first space (111). The first support part (31) is located in the second space (112). The first space (111) is provided with an output interface (24). The first limiting part (32) is located above the output interface (24).

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