Air-cooled direct current charging gun

Abstract

The utility model discloses a kind of air-cooled direct current charging gun, it is related to charging equipment technical field, wherein, the air-cooled direct current charging gun includes gun shell, cooling fan and dust screen cover, the gun shell has inner cavity and with the inner cavity communication's heat dissipation hole and installation groove, the heat dissipation hole with the installation groove interval arrangement;The cooling fan is installed at the installation groove;The dust screen cover includes screen cover casing and dust screen, the dust screen with the screen cover casing detachable connection, the screen cover casing is detachably connected in the inner cavity, and it is opposite to be arranged with the heat dissipation hole;The technical scheme provided by the utility model avoids dust to accumulate for a long time in air inlet, reduces the influence caused by dust accumulation to product performance.

Description

Technical Field

[0001] This utility model relates to the field of charging equipment technology, and in particular to an air-cooled DC charging gun. Background Technology

[0002] With the widespread adoption of new energy electric vehicles, the market demand for their supporting charging equipment is also growing rapidly. Currently, to meet users' higher requirements for vehicle range and charging efficiency, the battery capacity of electric vehicles is constantly increasing, which in turn places higher demands on the power of charging equipment. Against this backdrop, the charging rate of traditional conventional DC charging guns is no longer sufficient to meet the needs of fast charging, and charging guns with forced cooling structures have emerged and are gradually gaining attention.

[0003] Air-cooled charging guns, a common type of forced-heating charging gun, use a built-in fan to force in air, thereby cooling the charging head and improving charging speed. They are currently widely used in the market. However, their air inlets are typically designed with a mesh structure, which, while preventing foreign objects from entering to some extent, still allows dust to easily accumulate. Over time, this can lead to blockage, reducing the charging gun's cooling efficiency and potentially affecting its normal function. This inconveniences users and limits the further application of air-cooled charging guns in more efficient and faster charging scenarios. Utility Model Content

[0004] The main purpose of this invention is to propose an air-cooled DC charging gun, which aims to prevent dust from accumulating at the air inlet for a long time and reduce the impact of dust accumulation on product performance.

[0005] To achieve the above objectives, this utility model proposes an air-cooled DC charging gun, which includes:

[0006] A gun casing, the gun casing having an inner cavity and heat dissipation holes and a mounting groove communicating with the inner cavity, the heat dissipation holes and the mounting groove being spaced apart;

[0007] A cooling fan, wherein the cooling fan is installed in the mounting slot; and

[0008] A dustproof mesh cover, comprising a mesh cover housing and a dustproof mesh, wherein the dustproof mesh is detachably connected to the mesh cover housing, and the mesh cover housing is detachably connected to the inner cavity and is disposed opposite to the heat dissipation holes.

[0009] In one embodiment, the dustproof net cover further includes a clamp, the net cover housing has an opening and a groove is provided at the edge of the opening; the clamp elastically abuts against the groove, and the dustproof net is located between the clamp and the groove wall to press the dustproof net tightly at the opening.

[0010] In one embodiment, each of the two opposite sides of the clamp is provided with a protrusion, and the protrusion is located on the outer periphery of the clamp.

[0011] In one embodiment, the protrusion is an arc-shaped protrusion.

[0012] In one embodiment, the edge of the clamp is provided with a rounded transition.

[0013] In one embodiment, there are multiple heat dissipation holes, and multiple heat dissipation holes are provided on both sides of the gun shell;

[0014] The number of dustproof mesh covers is two, and each mesh cover housing is arranged opposite to a plurality of heat dissipation holes on one side of the gun housing; the mounting groove is located at the bottom of the gun housing.

[0015] In one embodiment, the gun casing includes:

[0016] The body, wherein the body has a main cavity and a mounting groove communicating with the main cavity; and

[0017] Two mounting shells are respectively disposed on the outer side wall of the main body, and each mounting shell is provided with a mounting cavity communicating with the main body cavity, a plurality of heat dissipation holes and at least one insertion hole communicating with the mounting cavity. Each dustproof mesh extends into the mounting cavity from the insertion hole and is detachably connected to the mounting cavity; the mounting cavity and the main body cavity enclose the inner cavity to form the inner cavity.

[0018] In one embodiment, each of the mounting shells is further provided with at least one snap-fit ​​hole communicating with the mounting cavity, the snap-fit ​​hole being spaced apart from the plurality of heat dissipation holes; one side of the mesh cover shell is provided with at least one hook; the hook is snapped into the snap-fit ​​hole so that the mesh cover shell is detachably connected to the inner cavity.

[0019] In one embodiment, a mounting strip protrudes from one side of the mesh cover housing, and the hook is attached to the mounting strip and is arranged perpendicular to the mounting strip.

[0020] In one embodiment, a gripper is provided on one side of the mesh cover housing, the gripper and the hook are located on the same side of the mesh cover housing and are spaced apart from the hook; and the gripper extends out of the mounting cavity from the insertion hole.

[0021] The air-cooled DC charging gun of this utility model includes a gun shell, a cooling fan, and a dustproof mesh cover. The gun shell has an inner cavity and heat dissipation holes and a mounting groove communicating with the inner cavity, with the heat dissipation holes and the mounting groove spaced apart. The cooling fan is installed in the mounting groove. The dustproof mesh cover includes a mesh cover shell and a dustproof mesh, which are detachably connected to the mesh cover shell. The mesh cover shell is detachably connected to the inner cavity and is positioned opposite to the heat dissipation holes. This application designs the dustproof mesh cover as an independent module. The detachable structure of the dustproof mesh cover significantly simplifies the cleaning and maintenance process, avoids dust accumulation at the air inlet for extended periods, and reduces the impact of dust accumulation on product performance. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the structure of an embodiment of the air-cooled DC charging gun provided by this utility model;

[0024] Figure 2 for Figure 1 Schematic diagram of AA section;

[0025] Figure 3 for Figure 2 A magnified view of section B;

[0026] Figure 4 Exploded view of the structure of the air-cooled DC charging gun provided by this utility model;

[0027] Figure 5 Front view of the dustproof mesh cover of the air-cooled DC charging gun provided by this utility model;

[0028] Figure 6 Left view of the dustproof mesh cover for the air-cooled DC charging gun provided by this utility model;

[0029] Figure 7 An exploded view of the dustproof mesh cover for the air-cooled DC charging gun provided by this utility model.

[0030] Explanation of icon numbers:

[0031] 10. Gun casing; 10a. Heat dissipation hole; 10b. Mounting slot; 11. Body; 11a. Main body cavity; 12. Mounting shell; 12a. Mounting cavity; 12b. Insertion hole; 12c. Snap-fit ​​hole; 20. Heat dissipation fan; 30. Dustproof mesh cover; 31. Mesh cover shell; 31a. Opening; 31b. Slot; 31c. Hook; 31d. Mounting strip; 31e. Handle; 32. Dustproof mesh; 33. Clamp; 33a. Protrusion.

[0032] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0034] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0035] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0036] In the current technology landscape, the widespread adoption of new energy electric vehicles is driving increased demand for charging equipment. Traditional air-cooled charging guns employ a fixed mesh air intake structure, which easily accumulates dust at the air intake after prolonged use, leading to decreased heat dissipation efficiency. Existing solutions struggle to balance efficient heat dissipation with convenient maintenance, requiring users to frequently clean or replace the entire unit, increasing operating costs and impacting charging efficiency.

[0037] To address the aforementioned issues, the non-removable nature of the dustproof structure was identified as a key limiting factor during the research and development process. When it was observed that dust accumulation primarily occurred at the air inlet, an attempt was made to design the dustproof component as an independent module. Testing at different installation locations revealed that separating the dustproof structure from the heat dissipation channel reduced maintenance difficulty. Based on this, a proposal was made to combine the dustproof mesh and the supporting shell into a detachable unit, and to optimize its fixation method within the gun body.

[0038] Therefore, this utility model proposes an air-cooled DC charging gun.

[0039] Please see Figures 1 to 4 In one embodiment of this utility model, the air-cooled DC charging gun includes a gun shell 10, a cooling fan 20, and a dustproof mesh cover 30. The gun shell 10 has an inner cavity and a heat dissipation hole 10a and a mounting groove 10b communicating with the inner cavity. The heat dissipation hole 10a and the mounting groove 10b are spaced apart. The cooling fan 20 is installed at the mounting groove 10b. The dustproof mesh cover 30 includes a mesh cover housing 31 and a dustproof mesh 32. The dustproof mesh 32 is detachably connected to the mesh cover housing 31. The mesh cover housing 31 is detachably connected to the inner cavity and is arranged opposite to the heat dissipation hole 10a.

[0040] The inner cavity of the gun housing 10 refers to the internal space that houses the heat dissipation components. This can be achieved by injection molding to create a shell with a through-cavity, forming a directional airflow channel. The spaced arrangement of the heat dissipation holes 10a and mounting grooves 10b means they are physically separated on the housing surface. This can be achieved using a zoned opening design, creating positive and negative pressure zones. The dust cover housing 31 of the dustproof mesh cover 30 refers to the frame structure that supports the filter components. It can be made of engineering plastic and feature a snap-fit ​​structure, facilitating overall assembly and disassembly. The detachable connection between the dustproof mesh 32 and the mesh cover housing 31 means the filter components can be separated independently. This is achieved through the engagement of the clamp 33 and the recess 31b, supporting rapid cleaning and maintenance.

[0041] Specifically, when the cooling fan 20 operates, it creates negative pressure in the mounting slot 10b area, allowing outside air to enter the inner cavity through the cooling holes 10a. A dust cover 30 covers the inside of the cooling holes 10a, blocking airborne particles. When cleaning is required, the entire dust cover 30 can be removed from the inner cavity of the gun housing 10, and the dust cover 32 can be separated for cleaning. The spaced arrangement of the cooling holes 10a and the mounting slot 10b forms an independent air duct, preventing the cooling fan 20 from drawing in unfiltered air. The detachable connection structure between the cover housing 31 and the inner cavity allows maintenance of the filter assembly without disassembling the entire unit.

[0042] This application designs the dust cover 30 as an independent module. The detachable structure of the dust cover 30 significantly simplifies the cleaning and maintenance process, preventing dust from accumulating at the air inlet for extended periods and reducing the impact of dust accumulation on product performance. During maintenance, cleaning can be completed simply by removing the dust cover 30, effectively solving the problem of reduced heat dissipation efficiency caused by dust accumulation at the air inlet of the air-cooled charging gun.

[0043] In one embodiment, please refer to Figures 4 to 7 The dustproof net cover 30 also includes a clamp 33. The net cover housing 31 has an opening 31a and a groove 31b is provided at the edge of the opening 31a. The clamp 33 elastically abuts against the groove 31b, and the dustproof net 32 ​​is located between the clamp 33 and the groove wall of the groove 31b to press the dustproof net tightly at the opening 31a.

[0044] Clamp 33 refers to an elastic annular or semi-annular metal part, specifically made of spring steel, whose elastic deformation capacity provides continuous clamping force. The recess 31b refers to a groove structure recessed into the mesh housing 31, surrounding the edge of the opening 31a. Specifically, it is an annular groove formed by machining, used to restrict the installation position of the clamp 33. Elastic abutment means that the diameter of the clamp 33 is slightly larger than the inner diameter of the recess 31b when not under pressure. During installation, it elastically expands and engages with the recess 31b, generating clamping force, thus creating a dynamic clamping state between the clamp 33 and the groove wall of the recess 31b.

[0045] After the dustproof net 32 ​​is placed on the surface of the opening 31a, the clamp 33, through elastic deformation, embeds itself into the settling tank 31b, and its clamping force tightly adheres the edge of the dustproof net 32 ​​to the tank wall of the settling tank 31b. When cleaning is required, the clamp 33 can be removed by manually pressing both ends to allow it to elastically contract; no special tools are needed. The depth of the settling tank 31b ensures stable engagement of the clamp 33 while preventing excessive compression that could damage the dustproof net 32. The elastic properties of the clamp 33 maintain the clamping force even when the equipment vibrates, preventing the dustproof net 32 ​​from shifting or falling off.

[0046] Compared to existing technologies, traditional dustproof nets mostly use bolts or adhesives for fixing, which leads to inconvenience in disassembly and maintenance. While some solutions employ snap-fit ​​structures, they lack an elastic clamping mechanism, making them prone to failure due to material fatigue. This solution utilizes the elastic cooperation between the clamp 33 and the sink 31b to achieve both quick assembly and disassembly, while ensuring long-term stable fixing of the dustproof net 32 ​​through continuous clamping force, thus avoiding the risk of plastic component breakage that may occur with rigid snap-fits.

[0047] In one embodiment, please refer to Figures 4 to 7 Each of the two opposite sides of the clamp 33 is provided with a protrusion 33a, and the protrusion 33a is located on the outer periphery of the clamp 33.

[0048] In this embodiment, the protrusion 33a refers to a local raised structure provided on the side of the clamp 33, which can be implemented by an arc-shaped protrusion to form symmetrical force application points during elastic contact. The outer side of the clamp 33 refers to the surface of the clamp 33 facing the wall of the sink 31b after installation, which can be implemented by a stamping process to increase the contact area when pressing the dustproof net 32.

[0049] Specifically, the protrusions 33a on both sides of the clamp 33 form symmetrical contact areas with the wall of the settling tank 31b. When the clamp 33 undergoes elastic deformation, the protrusions 33a evenly transmit pressure to the edge of the dustproof net 32. The symmetrically distributed force application points avoid pressure concentration in a single location, preventing local deformation or detachment of the dustproof net 32. During disassembly, the protrusions 33a protrude beyond the edge of the clamp 33, and the elastic deformation can be released by pressing the protrusions 33a, allowing the clamp 33 to be quickly released.

[0050] Compared with existing technologies, traditional clamps 33 typically employ a straight edge design, which can easily lead to uneven deformation and loosening of the dustproof net 32 ​​edges when in contact with the settling tank 31b. This solution utilizes the symmetrical distribution of protrusions 33a at both ends to ensure that the elastic pressure is evenly diffused along the circumference of the dustproof net 32. At the same time, the external design of the protrusions 33a avoids interference with the dustproof net 32, ensuring the stability of the clamping force.

[0051] In one embodiment, please refer to Figures 4 to 7 The protrusion 33a is an arc-shaped protrusion 33a.

[0052] In this embodiment, the arc-shaped protrusion 33a refers to a protrusion 33a with a continuous and smooth arc-shaped edge. Specifically, it can be implemented using a semi-circular or elliptical arc-shaped cross-section structure. This structure forms a contact surface without sharp edges when the clamp 33 contacts the dustproof net 32. The protrusion 33a being located on the outer sides of the clamp 33 means that the protrusion structure is arranged in the two middle areas along the length of the clamp 33. Specifically, it can be formed by bending the sides of the clamp 33 outwards through stamping or injection molding processes. This position effectively covers the edge of the dustproof net 32.

[0053] Specifically, during the installation of the clamp 33 into the sink 31b of the mesh cover housing 31, the operator presses both ends of the clamp 33 with their fingers to assemble it. When an arc-shaped protrusion 33a is used, an arc-shaped contact surface is formed between the protrusion 33a and the wall of the sink 31b, so that the stress of the clamp 33 is evenly distributed along the arc surface when it is deformed under pressure, avoiding local stress concentration that could lead to deformation of the clamp 33. At the same time, the arc edge does not generate cutting force when it contacts the dustproof mesh 32, preventing the mesh fibers from being cut by sharp edges during assembly. After assembly, the clamp 33 forms a surface contact with the wall of the sink 31b through the arc-shaped protrusion 33a to press the dustproof mesh 32, which increases the contact area compared to point contact, thereby improving the fixing reliability of the dustproof mesh 32.

[0054] This design eliminates sharp edges by using a rounded protrusion 33a, ensuring the operating contact surface is free of sharp edges. This protects the operator's safety and prevents damage to the mesh surface. Furthermore, the rounded structure provides better deformation adaptability during elastic clamping, compensating for assembly gaps caused by machining tolerances in the parts.

[0055] In one embodiment, please refer to Figures 4 to 7 The edge of clamp 33 is rounded for transition.

[0056] The rounded edge transition refers to the connection of the outer edge of the side end of the clamp 33 through an arc-shaped curved surface to avoid forming sharp corners. This can be achieved by stamping or injection molding. This design reduces local stress concentration when the clamp 33 contacts the dustproof net 32 ​​by eliminating the sharp shape of the edge.

[0057] Specifically, the rounded edge of the clamp 33 makes smooth contact with the surface of the dustproof net 32 ​​during assembly, avoiding cutting damage to the fibers of the dustproof net 32 ​​caused by right-angle or sharp-angled edges. Simultaneously, the continuous curved surface structure with rounded transitions ensures a more even distribution of force on the net surface when the clamp 33 presses against the dustproof net 32, thereby reducing the risk of net breakage due to localized stress. During maintenance and disassembly, the rounded structure prevents skin abrasions when the operator's hands come into contact with the edge of the clamp 33. Furthermore, this structure reduces dust accumulation at the edges and corners of the clamp 33, facilitating smooth airflow.

[0058] This solution uses a rounded transition structure to maintain the clamping force of the clamp 33 on the dustproof net 32 ​​while eliminating the impact of sharp edges on the net and personnel. It solves the problems of damage to the dustproof net 32 ​​and inconvenience in disassembly and assembly caused by the sharp edges of the clamp 33, improves the durability of the dustproof components, and reduces the safety hazards of maintenance operations.

[0059] In one embodiment, please refer to Figures 4 to 7The number of heat dissipation holes 10a is multiple, and multiple heat dissipation holes 10a are provided on both sides of the gun housing 10; the number of dustproof mesh covers 30 is two, and each mesh cover housing 31 is arranged opposite to multiple heat dissipation holes 10a on one side of the gun housing 10; the mounting groove 10b is located at the bottom of the gun housing 10.

[0060] The heat dissipation hole 10a is a ventilation structure that penetrates the side wall of the gun housing 10. It can be implemented using an array of circular or rectangular holes, forming symmetrically distributed air intake channels on both sides to increase airflow per unit time. The dust cover 30 consists of a cover housing 31 and a dust cover 32. The cover housing 31 is connected to the inner cavity of the gun housing 10 via a snap-fit ​​structure. The dust cover 32 is detachably fixed to the opening 31a of the cover housing 31. Its function is to cover the area of ​​the heat dissipation hole 10a to prevent dust from entering, while also facilitating independent disassembly and cleaning. The mounting groove 10b is a receiving structure penetrating the bottom of the gun housing 10. It can be designed as a rectangular or irregularly shaped groove to fix the cooling fan 20 and guide airflow. A spatially layered layout avoids interference between the heat dissipation components and the dust protection components.

[0061] Specifically, multiple sets of heat dissipation holes 10a are symmetrically arranged on both sides of the gun housing 10, forming a dual-sided air intake structure, allowing air to enter the inner cavity simultaneously from both sides, creating a convection heat dissipation path. Each dust cover 30 independently covers the corresponding heat dissipation hole 10a. The dustproof modularity is achieved through the detachable connection between the cover housing 31 and the gun housing 10, allowing for individual removal of either side of the cover for cleaning during maintenance without the need to disassemble the entire component. The cooling fan 20 is installed in the mounting groove 10b at the bottom of the gun housing 10, its position forming a vertical spatial distribution with the dust cover 30, so that the airflow direction generated by the fan forms an angle with the plane direction of the dust cover 32, ensuring smooth airflow through the dust cover 32 while avoiding accidental contact with the cooling fan 20 during maintenance operations.

[0062] This design effectively increases the air intake area and airflow efficiency through a symmetrically distributed heat dissipation hole layout on both sides 10a. Simultaneously, the use of a split dust cover 30 design, which separates the large dust cover 32 into two independent components, significantly reduces the size and weight of a single dust cover 30, making maintenance more convenient. The bottom positioning design of the mounting slot 10b optimizes the space utilization of the heat dissipation system, avoiding vertical overlap between the cooling fan 20 and the dust cover 30.

[0063] In one embodiment, please refer to Figures 4 to 7The gun casing 10 includes a body 11 and two mounting shells 12. The body 11 has a main cavity 11a and a mounting groove 10b communicating with the main cavity 11a. The two mounting shells 12 are respectively disposed on the outer side wall of the body 11, and each mounting shell 12 has a mounting cavity 12a communicating with the main cavity 11a, a plurality of heat dissipation holes 10a and at least one insertion hole 12b communicating with the mounting cavity 12a. Each dust cover 30 extends into the mounting cavity 12a from the insertion hole 12b and is detachably connected to the mounting cavity 12a. The mounting cavity 12a and the main cavity 11a enclose each other to form an inner cavity.

[0064] The body 11 refers to the structural component that forms the basic frame of the gun housing 10. Its internal main cavity 11a is used to centrally house core components such as the cooling fan 20. The mounting shell 12 refers to the independent shell set on the side of the gun housing 10. The two mounting shells 12 are integrally formed with the gun housing 10, and the mounting cavity 12a inside them is connected to the main cavity 11a to form a continuous airflow channel. The insertion hole 12b refers to the through hole opened on the side wall of the mounting shell 12. It can be designed as a rectangular or circular opening to provide a lateral assembly path for the dust cover 30.

[0065] Specifically, when the cooling fan 20 is running, external airflow enters the mounting cavity 12a through the heat dissipation holes 10a of the mounting housing 12, and forms a directional cooling airflow duct after passing through the main body cavity 11a. The dust cover 30 is pushed into the mounting cavity 12a laterally through the insertion hole 12b and is fixed by a snap-fit ​​structure, forming a dustproof cover for the heat dissipation holes 10a. During maintenance, the operator only needs to pull out the dust cover 30 through the side insertion hole 12b without disassembling the gun housing 10 body 11. The dust cover 301 and the gun housing 10 are combined through a detachable connection, which ensures the integrity of the internal cavity structure while realizing a modular design for the installation position of the dust cover 30.

[0066] This design utilizes a split mounting housing 12, changing the maintenance path of the dust cover 30 to a lateral operation, thus avoiding the need for complete disassembly of the gun housing 10. The lateral insertion assembly method significantly improves the convenience of cleaning operations. The split gun housing 10 structure optimizes the layout of the internal heat dissipation ducts, allowing airflow to flow efficiently along a preset path, avoiding the increased pressure loss caused by excessive duct bends in traditional structures. The mounting housing 12 and the main body 11 are integrally molded, ensuring structural strength while achieving modular maintenance of key components.

[0067] In one embodiment, please refer to Figures 4 to 7 Each mounting shell 12 is also provided with at least one snap-fit ​​hole 12c communicating with the mounting cavity 12a. The snap-fit ​​hole 12c is spaced apart from a plurality of heat dissipation holes 10a. At least one hook 31c is provided on one side of the mesh cover shell 31. The hook 31c is snapped into the snap-fit ​​hole 12c so that the mesh cover shell 31 can be detachably connected to the inner cavity.

[0068] In this embodiment, the snap-fit ​​hole 12c refers to an independent hole opened on the mounting shell 12, which is set separately from the heat dissipation channel. Specifically, it can be implemented with a circular or square hole, and the airflow of the heat dissipation hole 10a is not disturbed through spatial isolation. The snap hook 31c refers to an elastic protrusion structure provided on the side of the mesh cover shell 31. Specifically, it can be implemented with an injection-molded plastic buckle, which generates a snap-fit ​​force through deformation to achieve quick locking and releasing.

[0069] Specifically, during installation, the hook 31c is aligned with the locking hole 12c and pressure is applied, causing the hook 31c to elastically deform and engage in the hole, thus completing the mechanical locking. During disassembly, the hook 31c is disengaged from the locking hole 12c by external force to remove the mesh cover 31. Because the locking hole 12c is spaced apart from the heat dissipation hole 10a, the installation and removal of the dust cover 30 will not affect the structure of the heat dissipation hole 10a area, preventing deformation of the heat dissipation hole 10a due to operation. The engagement of the hook 31c and the locking hole 12c only requires force from one side to complete the fixation, eliminating the need for multi-directional operations and reducing the complexity of installation and removal.

[0070] This solution achieves tool-free assembly and disassembly by utilizing the elastic fit between the hook 31c and the snap-fit ​​hole 12c, reducing operational steps. In existing technologies, snap-fit ​​structures are often co-located with the heat dissipation hole 10a, which can easily disrupt the shape of the heat dissipation channel during assembly and disassembly. This solution, however, uses an independent snap-fit ​​hole 12c design to avoid physical contact with the heat dissipation hole 10a area, maintaining the integrity of the air duct structure. Precise alignment is achieved through a dedicated snap-fit ​​structure, ensuring the relative positional stability of the mesh cover housing 31 and the heat dissipation hole 10a after installation. The elastic deformation characteristics of the hook 31c prevent permanent structural damage caused by repeated assembly and disassembly, extending the component's service life.

[0071] In one embodiment, please refer to Figures 4 to 7 A mounting strip 31d protrudes from one side of the mesh cover housing 31, and a hook 31c is provided on the mounting strip 31d and is set perpendicular to the mounting strip 31d.

[0072] The mounting strip 31d refers to a strip-shaped protrusion extending from the surface of the mesh cover shell 31. It can be integrally molded with the shell using injection molding. This structure provides an independent load-bearing base for the hook 31c, avoiding stress concentration caused by direct connection to the shell plane. The hook 31c and mounting strip 31d are perpendicular, meaning the extension direction of the hook 31c forms a 90-degree angle with the length direction of the mounting strip 31d. This can be achieved by adjusting the spatial relationship between the hook 31c and the mounting strip 31d during mold forming. This perpendicular arrangement ensures that the elastic deformation direction of the hook 31c is orthogonal to the support direction of the mounting strip 31d.

[0073] Specifically, when the dust cover 30 needs to be installed into the charging gun cavity, the operator pushes the mounting strip 31d to move the hook 31c towards the locking hole 12c. Since the mounting strip 31d acts as a rigid support structure, it effectively constrains the movement trajectory of the hook 31c during installation, ensuring it is accurately inserted into the locking hole 12c along a predetermined path. The elastic deformation direction of the hook 31c when squeezed by the wall of the mounting groove 10b is perpendicular to the extension direction of the mounting strip 31d. At this time, the mounting strip 31d acts as an anti-bending support, preventing the hook 31c from undergoing unintended lateral displacement during deformation. After the hook 31c is fully inserted into the locking hole 12c, the locking force generated by its elastic recovery balances the supporting reaction force of the mounting strip 31d, thus achieving double fixation of the locking structure.

[0074] For some specific implementation methods, please refer to Figures 4 to 7 The mounting strip 31d extends longitudinally along the side of the mesh housing 31. The hook 31c may be made of polycarbonate material. The surface of the mounting strip 31d may be provided with anti-slip texture to enhance operational stability during assembly.

[0075] This solution adds an installation strip 31d to form an independent load-bearing structure, which rigidly constrains the deformation path of the hook 31c, improving installation positioning accuracy. The vertical layout design ensures that the direction of the elastic restoring force of the hook 31c and the support direction of the installation strip 31d are mechanically balanced, improving connection stability.

[0076] In one embodiment, please refer to Figures 4 to 7 A gripper 31e is provided on one side of the mesh cover housing 31. The gripper 31e and the hook 31c are located on the same side of the mesh cover housing 31 and are spaced apart from each other. The gripper 31e extends out of the mounting cavity 12a from the insertion hole 12b.

[0077] The gripper 31e refers to the extended operating structure located on the side of the dust cover housing 31. It can be implemented using a sheet-like or strip-like protrusion, with its exposed portion facilitating finger gripping and force application. This structure, through its extended design, forms the operating part, directly exposed outside the mounting cavity 12a. The hook 31c refers to the elastic locking component located on the side of the dust cover housing 31. It can be implemented using a plastic boss structure with barbs. The engagement hole 12c and the hook 31c form a detachable connection. This component mechanically interlocks with the engagement hole 12c of the mounting housing 12, maintaining the installation stability of the dust cover 30.

[0078] Specifically, the gripper 31e and the hook 31c are spaced apart on the same side of the dust cover housing 31, forming a separate layout for the operating area and the fixed area. When the dust cover 30 needs to be disassembled, the operator applies a pulling force through the exposed gripper 31e. The direction of this pulling force is consistent with the release direction of the hook 31c. At this time, when a force is applied to the hook 31c axially inward along the locking hole 12c, this force causes the hook 31c to elastically deform and disengage from the locking hole 12c. At the same time, the point of force application of the gripper 31e and the fixing point of the hook 31c form a torque balance, preventing the dust cover housing 31 from deflecting or getting stuck during disassembly. In the installed state, the rigid fit between the hook 31c and the locking hole 12c maintains the connection strength between the dust cover housing 31 and the mounting shell 12, while the extended structure of the gripper 31e does not affect the sealing performance and only provides an operating interface during maintenance.

[0079] This solution enables manual operation through the exposed gripper 31e, and the hook 31c set on the same side forms a cooperative force-bearing structure with the gripper 31e. The entire disassembly can be completed by applying force on one side, while maintaining the synchronous disengagement of multiple locking points to avoid local stress concentration.

[0080] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A wind-cooled DC charging gun, characterized in that, The air-cooled DC charging gun includes: A gun casing, the gun casing having an inner cavity and heat dissipation holes and a mounting groove communicating with the inner cavity, the heat dissipation holes and the mounting groove being spaced apart; A cooling fan, wherein the cooling fan is installed in the mounting slot; and A dustproof mesh cover, comprising a mesh cover housing and a dustproof mesh, wherein the dustproof mesh is detachably connected to the mesh cover housing, and the mesh cover housing is detachably connected to the inner cavity and is disposed opposite to the heat dissipation holes.

2. The air-cooled DC charging gun as described in claim 1, characterized in that, The dustproof net cover also includes a clamp, the net cover housing has an opening and a groove is provided at the edge of the opening; the clamp elastically abuts against the groove, and the dustproof net is located between the clamp and the groove wall to press the dustproof net tightly at the opening.

3. The air-cooled DC charging gun as described in claim 2, characterized in that, Each of the two opposite sides of the clamp has a protrusion, and the protrusion is located on the outer periphery of the clamp.

4. The air-cooled DC charging gun as described in claim 3, characterized in that, The protrusion is an arc-shaped protrusion.

5. The air-cooled DC charging gun as described in claim 2, characterized in that, The edges of the clamp are rounded.

6. The air-cooled DC charging gun as described in claim 1, characterized in that, The number of heat dissipation holes is multiple, and multiple heat dissipation holes are provided on both sides of the gun shell; The number of dustproof mesh covers is two, and each mesh cover housing is arranged opposite to a plurality of heat dissipation holes on one side of the gun housing; the mounting groove is located at the bottom of the gun housing.

7. The air-cooled DC charging gun as described in claim 6, characterized in that, The gun casing includes: The body, wherein the body has a main cavity and a mounting groove communicating with the main cavity; and Two mounting shells are respectively disposed on the outer side wall of the main body, and each mounting shell is provided with a mounting cavity communicating with the main body cavity, a plurality of heat dissipation holes and at least one insertion hole communicating with the mounting cavity. Each dustproof mesh extends into the mounting cavity from the insertion hole and is detachably connected to the mounting cavity; the mounting cavity and the main body cavity enclose the inner cavity to form the inner cavity.

8. The air-cooled DC charging gun as described in claim 7, characterized in that, Each of the mounting shells is further provided with at least one snap-fit ​​hole communicating with the mounting cavity, and the snap-fit ​​hole is spaced apart from the plurality of heat dissipation holes; one side of the mesh cover shell is provided with at least one hook; the hook is snapped into the snap-fit ​​hole so that the mesh cover shell can be detachably connected to the inner cavity.

9. The air-cooled DC charging gun as described in claim 8, characterized in that, A mounting strip protrudes from one side of the mesh cover housing, and the hook is attached to the mounting strip and is perpendicular to the mounting strip.

10. The air-cooled DC charging gun as described in claim 8, characterized in that, A gripper is provided on one side of the mesh cover housing. The gripper and the hook are located on the same side of the mesh cover housing and are spaced apart from each other. The gripper extends out of the mounting cavity from the insertion hole.

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