Charger with ventilation hole and waterproof design

Abstract

The utility model discloses a kind of charger with ventilation hole and waterproof design, including upper cover, its front end and rear end are provided with multiple air inlet and air outlet respectively, bottom shell, its front end and rear end are provided with multiple first and second bottom drain holes respectively, bottom shell is inlaid upper cover and forms accommodating space, charger body, is set in accommodating space, air inlet end grating, it is set in accommodating space and multiple air inlets are sequentially arranged, the bottom of air inlet end grating has drain hole, and air outlet end grating, it is set in accommodating space and multiple air outlets are sequentially arranged, the bottom of air outlet end grating has drain hole. Air inlet grating drain hole is aligned first bottom drain hole, provides first drain path. Air outlet grating drain hole is aligned second bottom drain hole, provides second drain path.

Description

Technical Field

[0001] This utility model relates to the technical field of chargers, and in particular to a charger with ventilation holes and a waterproof design. Background Technology

[0002] Generally, power supplies or charging devices need to provide high voltage or high current, and often contain many components that generate heat, such as switching components and magnetic components. However, due to the limited space inside a power supply, if heat cannot be effectively dissipated, the accumulated waste heat can cause system malfunctions and damage the power supply. Therefore, traditional power supplies often have fans to blow air into the power supply to enhance heat dissipation. However, without proper internal configuration, effective heat dissipation is also impossible.

[0003] Electric bicycles, such as e-bikes, typically use charging equipment that operates outdoors. As a mode of transportation, electric bicycles require timely charging after use. Currently, most chargers on the market, whether lead-acid or lithium-ion, rely on sealed casings or fans for heat dissipation. While sealed casings offer good waterproofing, they are generally only suitable for low-power chargers. This is because the higher the power, the more heat the charger generates, making it difficult to control the temperature rise with casings. This results in the charger becoming extremely hot to the touch and significantly impacts the lifespan of the internal electronic components.

[0004] Fan cooling is low-cost and widely used, but because the fan blows directly onto the electronic components and circulates directly with the outside air through the casing grille, the charger itself is not waterproof and cannot function properly in humid or rainy environments. When it rains, the charging device gets wet. To prevent rainwater from entering the casing, most charging devices have their ventilation vents on the sides. However, while this prevents rainwater from directly entering the casing, the water droplets generated by rainwater impacting external objects float in the air. These droplets are then drawn into the casing by the cooling fan, causing corrosion of the motherboard and affecting its lifespan. Utility Model Content

[0005] In view of this, to solve the above problems, this utility model proposes a charger with ventilation holes and a waterproof design, comprising: a top cover, the front and rear ends of which have multiple air inlets and multiple exhaust outlets respectively; a bottom shell, the front and rear ends of which have multiple first bottom drainage holes and multiple second bottom drainage holes respectively; the bottom shell fitting into the top cover to form an accommodating space; a charger body disposed in the accommodating space; an air inlet grille disposed in the accommodating space and adjacent to multiple air inlets, the air inlet grille having multiple first ventilation holes staggered with the multiple air inlets, the bottom of the air inlet grille having an air inlet grille drainage hole; and an exhaust grille disposed in the accommodating space and adjacent to multiple exhaust outlets, the exhaust grille having multiple second ventilation holes staggered with the multiple exhaust outlets, the bottom of the exhaust grille having an exhaust grille drainage hole. The air inlet grille drainage holes are aligned with the first bottom drainage holes, providing a first drainage path. The exhaust grille drainage holes are aligned with the second bottom drainage holes, providing a second drainage path.

[0006] In one embodiment, the charger with ventilation holes and waterproof design further includes a fan disposed in the housing space and adjacent to the exhaust end grille as a heat dissipation device. Through the operation of the fan, air is provided to enter the housing space through multiple air inlets, dissipates heat on the electronic components of the charger through the air inlet grille, and exhausts the air from the exhaust grille and multiple exhaust ports to form a heat dissipation airflow circulation.

[0007] In one embodiment, the charger with ventilation holes and a waterproof design further includes a water-absorbing material disposed at the plurality of air inlets and passing through the air inlet grille to absorb moisture.

[0008] In one embodiment, the main body of the bottom housing is composed of a flat surface and sidewalls surrounding the flat surface. Each of the two sidewall edges of the bottom housing has a pair of grooves with inclined surfaces, allowing moisture entering the bottom housing to pass through the grooves and be discharged through corresponding third bottom drain holes. The pair of grooves with inclined surfaces slope downwards from the center in the front-to-back direction and downwards from the inside towards the edge. The multiple third bottom drain holes are located at the corners of the bottom housing. The bottom housing and the top cover are interlocked to further prevent moisture from entering the charger's interior via the bottom.

[0009] In one embodiment, the upper cover engages with a top shield to form an upper cover assembly, and the lower housing engages with a bottom shield to form a bottom assembly. The upper cover assembly and the bottom assembly fit together to form the housing of the charger. Attached Figure Description

[0010] The components, features, and advantages of this invention can be understood through the detailed description and accompanying drawings of the preferred embodiments outlined in the specification: Figure 1a This shows an exploded view of the charging device proposed in this utility model.

[0011] Figure 1b This invention presents a perspective view of the charging device.

[0012] Figure 2a This diagram shows the air intake and exhaust paths of the charging device proposed in this invention.

[0013] Figure 2b show Figure 2a Sectional view in the AA direction.

[0014] Figure 2c show Figure 2b Enlarged detail view of the front air intake and the air intake grille.

[0015] Figure 2d This invention displays a side view and a cross-sectional view along the BB direction of the charging device proposed in this invention.

[0016] Figure 2e show Figure 2d Enlarged detail view of the front air intake and the air intake grille.

[0017] Figure 2f Shows a 3D view of the front of the charging device, including the air intake grille.

[0018] Figure 2g This shows a bottom view of the charging device proposed in this utility model.

[0019] Figure 3a Showing a 3D view of the rear of the charging device, including the exhaust end grille.

[0020] Figure 3b This is a top view of the charging device proposed in this utility model.

[0021] Figure 3c show Figure 3b Sectional view in the BB direction.

[0022] Figure 3d for Figure 3c A detailed magnified view.

[0023] Figure 3e This shows a bottom view of the charging device proposed in this utility model.

[0024] Figure 4a This invention presents a perspective view of the bottom casing of the charging device.

[0025] Figure 4b This shows a top view of the bottom casing of the charging device proposed in this utility model.

[0026] Figure 4c show Figure 4b A cross-sectional view along the AA direction.

[0027] Figure 5a This shows a top view of the charging device proposed in this utility model.

[0028] Figure 5b for Figure 5a Enlarged view of the cross-section along the EE direction.

[0029] Symbol explanation: Charging equipment 100 Top cover 101 Multiple air inlets 101a Multiple exhaust ports 101b Top shield 103 Charger body 105 Bottom shield 107 Bottom shell 109 AC power socket 1051 Air intake grille 1052 Multiple first ventilation openings 1052a Inlet drain hole 1052b Main circuit board 1053 Fan 1054 Exhaust grille 1055 Multiple secondary ventilation openings 1055a DC power cord 1056 Bottom shield 107 Bottom shell 109 First bottom drainage hole 109a Second bottom drainage hole 109b Screw 111 Rubber foot pads 113 Trench 120 Third bottom drainage hole 122 Detailed Implementation

[0030] Some preferred embodiments of the present invention will now be described in more detail. However, it should be understood that the preferred embodiments of the present invention are provided for illustration and not limitation. Furthermore, the present invention may be practiced in a wide range of other embodiments besides those explicitly described, and the scope of the present invention is not expressly limited unless specified in the appended claims.

[0031] The purpose of this invention is to disclose a charger with ventilation holes and a waterproof design, which solves the problem of providing waterproof functionality while using a fan for heat dissipation, especially in outdoor charging environments.

[0032] To achieve the aforementioned purpose, this utility model utilizes an asymmetrical grille design with double-layer staggered arrangement at the air inlet and exhaust outlet of the charging device, and provides ventilation, heat dissipation, and waterproofing functions through water guide channels and drainage holes.

[0033] Figure 1a A charging device 100 is shown, which includes at least an upper cover 101, a top shield 103, a charger body 105, a bottom shield 107, and a bottom outer shell 109. The charger body 105 includes an AC power socket 1051, an air intake grille 1052, a main circuit board 1053, a fan 1054, an exhaust grille 1055, and a DC power cord 1056. According to an embodiment of this utility model, the overall charging device 100 is composed of, from bottom to top, the bottom outer shell 109, the bottom shield 107, the charger body 105, the top shield 103, and the upper cover 101, and is secured with screws 111, each screw 111 being fitted with a rubber foot 113. Specifically, the charger body 105 is disposed in an accommodating space inside a housing, the housing being formed by fitting an upper cover assembly and a bottom assembly together; wherein, the upper cover assembly includes an upper cover 101 and a top shield 103 that engages with the upper cover 101, and the bottom assembly includes a bottom outer shell 109 and a bottom shield 107 that engages with the bottom outer shell 109.

[0034] According to an embodiment of this utility model, in the charger body 105, the main circuit board 1053 carries the electronic components of the charging device 100, including power supply components such as transformers and rectifier circuits, and is disposed on the main circuit board 1053. As an example, the rectifier circuit includes at least bridge rectifiers, filter capacitors, inductors (choke coils), control ICs, MOS power switches, secondary filter capacitors, and secondary rectifier diodes, but is not limited thereto, and will not be described in detail here.

[0035] According to an embodiment of the present invention, an AC power socket 1051 is disposed at the front end (first end) of the charging device 100 and electrically coupled to the main circuit board 1053; an air intake grille 1052 is disposed on the AC power socket 1051 and located in the internal accommodating space of the upper cover 101; a fan 1054 is disposed at the rear end (second end) of the charging device 100 as a heat dissipation device and electrically coupled to the main circuit board 1053; an exhaust grille 1055 is disposed through the housing formed by the fan 1054 and the upper cover 101; and a DC power line 1056 is electrically connected to the main circuit board 1053.

[0036] Figure 1b A three-dimensional view of the charging device 100.

[0037] Figure 2a The diagram shows the air intake and exhaust paths of the charging device. When the fan 1054 is running, air enters the interior of the housing through multiple air intakes 101a at the front end (first end) of the housing of the charging device 100, and then enters the accommodating space through the air intake grille 1052 to dissipate heat from the main circuit board 1053 and the electronic components of the charging device 100 it carries. The air is then discharged from the exhaust grille 1055 through multiple exhaust ports 101b at the rear end (second end) of the housing by the fan 1054, thus forming a heat dissipation airflow circulation.

[0038] According to an embodiment of the present invention, the air intake grille 1052 has a plurality of first vents 1052a that are offset from the plurality of air intakes 101a; the exhaust grille 1055 has a plurality of second vents 1055a that are offset from the plurality of exhausts 101b, in order to provide waterproofing.

[0039] Figure 2b show Figure 2a Sectional view in the AA direction. Figure 2c show Figure 2b The diagram shows a detailed enlarged view of the multiple air inlets 101a and the air inlet grille 1052 at the front end of the upper cover 101. The composite arrows in the diagram indicate that the airflow includes both air and water vapor. The water vapor (dashed arrows) can be absorbed by a semi-permeable membrane or absorbent material (not shown) that passes between the multiple air inlets 101a and the air inlet grille 1052, or blocked by the multiple first vents 1052a of the air inlet grille 1052, which are offset from the multiple air inlets 101a. Finally, the water vapor is discharged through the drain holes at the bottom of the air inlet grille 1052. For further explanation of the water vapor (dashed arrow) discharge path, please refer to [reference needed]. Figure 2d , Figure 2e , Figure 2f and Figure 2g The air intake grille 1052 has a pair of air intake drain holes 1052b disposed at the bottom, the air intake drain holes 1052b being aligned along both sides of the AC power socket 1051 and with a plurality of first bottom drain holes 109a located on the bottom housing 109, providing a first drainage path.

[0040] To further illustrate the design of the exhaust end of the charging device 100, please refer to [the relevant documentation / reference]. Figures 3a-3e . Figure 3a A partial perspective view of the charging device 100 at the rear exhaust end grille 1055. Figure 3c as well as Figure 3dThe diagram shows that the rear end of the charging device 100 housing has an exhaust grille 1055 disposed between the fan 1054 and the top cover 101. The compound arrows in the diagram indicate airflow containing both air and water vapor. Water vapor (dashed arrows) entering the multiple exhaust ports 101b can be blocked by the multiple second vents 1055a of the exhaust grille 1055, which is offset from the multiple exhaust ports 101a, and ultimately discharged through the drain holes at the bottom of the exhaust grille 1055. For further explanation of the water vapor (dashed arrow) discharge path, please refer to [reference needed]. Figure 3e The exhaust end grille 1055 has multiple drainage holes at its bottom, which are aligned with multiple second bottom drainage holes 109b located on the bottom housing 109 to provide a second drainage path.

[0041] Figure 4a A perspective view of the bottom casing 109 is shown, showing multiple first bottom drainage holes 109b and second bottom drainage holes 109b at its front and rear ends, respectively. The main body of the bottom casing 109 consists of a flat surface and surrounding side walls. The front and rear side walls have notches for mounting an AC power socket 1051 and a DC power cord 1056, respectively. (Reference) Figures 4b-4c Each of the two sides of the bottom outer casing 109 is provided with a pair of grooves 120 with inclined surfaces. The inclined surfaces of each pair of grooves 120 are inclined downward from the center (dashed line) in the front-back direction (X direction) and downward from the inside to the edge direction (Y direction), so that the water vapor entering the bottom outer casing 109 can be guided through the inclined surfaces of the grooves 120 to the third bottom drain hole 122 located at the corner.

[0042] In addition, refer to Figures 5a-5b The charging device 100 proposed in this utility model has a housing, such as the bottom outer shell 109 and the top cover 101, which can further prevent moisture (in the direction of the arrow) from entering the charging device 100 through the bottom by means of a mutually interlocking structural design.

[0043] This utility model proposes a charger with ventilation holes and waterproof design. The charging device utilizes an asymmetrical grille design with double-layer staggered arrangement at the air inlet and exhaust outlet, and provides ventilation, heat dissipation and waterproofing functions through water guide channels and drainage holes.

[0044] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model and its benefits have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the claims of this utility model.

Claims

1. A charger with ventilation holes and a waterproof design, characterized in that, Include: The top cover has multiple air inlets and multiple exhaust outlets at its front and rear ends, respectively. A bottom outer shell, the front end and the rear end of the bottom outer shell respectively have a plurality of first bottom drainage holes and a plurality of second bottom drainage holes, the bottom outer shell is fitted into the top cover to form an accommodating space; A charger body is disposed in the accommodating space; An air intake grille is disposed in the accommodating space and adjacent to the plurality of air inlets. The air intake grille has a plurality of first ventilation openings that are staggered with the plurality of air inlets. The bottom of the air intake grille has an air intake grille drain hole. An exhaust end grille is disposed in the accommodating space and adjacent to the plurality of exhaust ports. The exhaust end grille has a plurality of second ventilation openings that are staggered with the plurality of exhaust ports. The bottom of the exhaust end grille has exhaust grille drainage holes. Wherein, the air intake grille drain hole is aligned with the first bottom drain hole, and the air intake grille drain hole and the first bottom drain hole provide a first drainage path; and The exhaust grille drain hole is aligned with the second bottom drain hole, and the exhaust grille drain hole and the second bottom drain hole provide a second drainage path.

2. The charger with ventilation holes and waterproof design according to claim 1, characterized in that, It also includes a fan, which is disposed in the accommodating space and adjacent to the exhaust end grille, as a heat dissipation device. Through the operation of the fan, air is provided to enter the accommodating space through the multiple air inlets, and the air is cooled by the electronic components of the charger through the air inlet grille. The air is then discharged from the exhaust grille and the multiple exhaust ports to form a heat dissipation airflow circulation.

3. The charger with ventilation holes and waterproof design according to claim 2, characterized in that, The main body of the bottom shell consists of a plane and sidewalls surrounding the plane.

4. The charger with ventilation holes and waterproof design according to claim 3, characterized in that, On each side of the bottom housing, a pair of grooves with inclined surfaces are provided at the edge of the side wall, allowing water vapor entering the bottom housing to be discharged through the grooves into the corresponding plurality of third bottom drain holes.

5. The charger with ventilation holes and waterproof design according to claim 4, characterized in that, The pair of grooves have inclined surfaces that slope downwards from the center in the front-back direction and downwards from the inside towards the edge.

6. The charger with ventilation holes and waterproof design according to claim 4, characterized in that, The plurality of third bottom drainage holes are located at the corners of the bottom housing.

7. The charger with ventilation holes and waterproof design according to claim 4, characterized in that, The bottom outer shell and the top cover are interlocked to further prevent moisture from entering the charger's interior through the bottom.

8. The charger with ventilation holes and waterproof design according to claim 4, characterized in that, It also includes water-absorbing material, which is disposed at the multiple air inlets and passes through the air inlet end grille to absorb moisture.

9. The charger with ventilation holes and waterproof design according to claim 1, characterized in that, The upper cover is snapped into a top shield to form an upper cover assembly; the lower outer shell is snapped into a bottom shield to form a bottom assembly.

10. The charger with ventilation holes and waterproof design according to claim 9, characterized in that, The top cover assembly fits into the bottom assembly to form the housing of the charger.

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