A charging gun head anti-swing wear-resistant integrated protection assembly

Abstract

The utility model provides a kind of charging gun head anti-swing wear-resistant integrated protection assembly, belong to charging gun gun head technical field, the charging gun head anti-swing wear-resistant integrated protection assembly, comprising:Annular gasket body, anti-swing limiting ring, buffer elastic layer, fixed slot, support reinforcing rib and wear-resistant protection piece;Annular gasket body hollow torus, inner diameter cooperation charging gun gun head;Inner circumference is distributed with anti-swing limiting ring, and the outer surface of gun head is attached;Upper and lower surface covers 2-5 millimeter rubber buffer elastic layer;Outer circumference opens trapezoidal section fixed slot, and the depth is one third to one half of wall thickness;Radially be equipped with 6 support reinforcing ribs, from inner circle to outer circle equidistant distribution;Buffer elastic layer surface sticks polytetrafluoroethylene wear-resistant protection piece;The utility model can solve the technical problems that charging gun gun head in prior art is prone to swing during charging process, leading to poor contact, unstable connection and contact surface wear aggravation.

Description

Technical Field

[0001] The present utility model belongs to the technical field of charging gun heads, and specifically relates to an integrated anti-sway and wear-resistant protection component for a charging gun head. Background Art

[0002] With the rapid development of the electric vehicle industry, the construction of charging infrastructure has been increasingly improved. As a key component connecting a charging pile to an electric vehicle, the performance of a charging gun directly affects charging efficiency and safety. Currently, commonly used charging guns generally have the problem of gun head sway during charging, which is mainly caused by factors such as the large weight of the charging gun, the pulling effect of the charging cable, and the fitting clearance between the vehicle charging port and the charging gun interface. In the prior art, simple rubber gaskets or plastic gaskets are usually used to alleviate this problem. However, these traditional gaskets have a simple structure and lack effective anti-sway limiting mechanisms, which cannot fundamentally solve the problem of gun head sway. Traditional gaskets have a single material, lack layered design, and have limited cushioning effects. They are prone to aging and deformation during long-term use, losing their proper support and cushioning functions. In addition, existing gaskets generally lack heat dissipation design, and heat accumulation easily occurs during high-current charging, which leads to degradation of the gasket material properties and even thermal deformation, affecting the stability of charging connection. Traditional gaskets also have poor wear resistance, they are prone to wear during frequent plugging and unplugging, have short service life, require frequent replacement, and increase maintenance costs. These technical defects seriously affect the reliability of the charging system and user experience, and a new type of gasket with good anti-sway, wear-resistant, cushioning and heat dissipation performance is urgently needed to solve these problems. Utility Model Content

[0003] In view of this, the present utility model provides an integrated anti-sway and wear-resistant protection component for a charging gun head, which can solve the technical problems in the prior art that the charging gun head is prone to sway during charging, resulting in poor contact, unstable connection and increased wear of the contact surface.

[0004] The present utility model is implemented as follows: This utility model provides an integrated anti-sway and wear-resistant protective component for a charging gun head, comprising: an annular washer body, an anti-sway limiting ring, a buffer elastic layer, a fixing groove, supporting reinforcing ribs, and a wear-resistant protective sheet; the annular washer body has a hollow circular ring structure, and the inner diameter of the annular washer body matches the outer diameter of the charging gun head; an anti-sway limiting ring is provided on the inner circumferential surface of the annular washer body, and the anti-sway limiting ring is evenly distributed along the inner circumferential surface of the annular washer body, with the inner surface of the anti-sway limiting ring tightly fitted to the outer surface of the charging gun head; buffer elastic layers are respectively provided on the upper and lower surfaces of the annular washer body. The buffer elastic layer is made of rubber material, and its thickness is 2 mm to 5 mm. A fixing groove is provided on the outer circumference of the annular washer body. The fixing groove has a trapezoidal cross-section structure, and its depth is one-third to one-half of the wall thickness of the annular washer body. Supporting reinforcing ribs are provided in the radial direction of the annular washer body. The supporting reinforcing ribs extend from the inner circumference of the annular washer body to the outer circumference, and there are 6 supporting reinforcing ribs, which are evenly distributed along the circumference. A wear-resistant protective sheet is bonded to the surface of the buffer elastic layer. The wear-resistant protective sheet is made of polytetrafluoroethylene material.

[0005] The technical advantages of this utility model's integrated anti-sway and wear-resistant protective component for charging gun heads are as follows: Through the coordinated design of the annular washer body and the anti-sway limiting ring, precise positioning and anti-sway functions of the charging gun head are achieved. The tight fit between the anti-sway limiting ring and the outer surface of the charging gun head effectively limits the radial sway of the head. The buffer elastic layer is made of rubber material, which can absorb vibrations and impacts generated during charging, protecting the charging gun head from damage. The trapezoidal cross-section structure of the fixing slot reliably connects to the charging gun shell, and the radial distribution of the supporting reinforcing ribs enhances the overall structural strength. The wear-resistant protective plate, made of polytetrafluoroethylene (PTFE), has excellent wear resistance, significantly extending the service life of the washer.

[0006] Based on the above technical solution, the integrated anti-sway and wear-resistant protective component for the charging gun head of this utility model can be further improved as follows: The anti-sway limiting ring includes a limiting protrusion and a limiting groove. The limiting protrusion protrudes radially inward from the inner circumference of the annular washer body, and the height of the limiting protrusion is 1 mm to 3 mm. A limiting groove is formed between two adjacent limiting protrusions. The width of the limiting groove matches the positioning boss on the outer surface of the charging gun head. The limiting groove is used to accommodate the positioning boss of the charging gun head to achieve anti-sway positioning.

[0007] The beneficial effects of adopting the above-mentioned improved design are as follows: the combined design of the limiting protrusion and the limiting groove achieves a more precise anti-sway positioning function. The limiting protrusion extends radially inward to form a mechanical limit, effectively preventing the charging gun head from moving in the radial direction. The precise fit between the limiting groove and the positioning boss on the outer surface of the charging gun head ensures accurate positioning of the gun head within the gasket, eliminating contact problems caused by inaccurate positioning. The height of the limiting protrusion is controlled within the range of 1 mm to 3 mm, ensuring both the limiting effect and avoiding excessive constraint, thus improving the smoothness of charging gun insertion and removal.

[0008] Furthermore, the buffer elastic layer includes an upper elastic layer and a lower elastic layer; the upper elastic layer is disposed on the upper surface of the annular washer body, and the lower elastic layer is disposed on the lower surface of the annular washer body; the material hardness of the upper elastic layer and the lower elastic layer is Shore A hardness of 60 to 80 degrees; the upper elastic layer and the lower elastic layer are integrally formed with the annular washer body through a vulcanization bonding process.

[0009] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the double-layer design of the upper and lower elastic layers provides better cushioning protection, enabling comprehensive protection of the charging gun head from both top and bottom directions. The selection of materials with a Shore A hardness of 60 to 80 degrees ensures both sufficient elasticity and good support performance, avoiding problems caused by being too soft or too hard. The vulcanization bonding process achieves integral molding of the elastic layer and the gasket body, eliminating the risk of delamination and improving the reliability and durability of the product, ensuring the stability of cushioning performance during long-term use.

[0010] Furthermore, the fixed slot includes a slot body and a slot chamfer; the slot body has a trapezoidal cross-section, the upper opening width of the slot body is greater than the lower opening width, and the ratio of the upper opening width to the lower opening width is 1.2 to 1.8; a slot chamfer is provided at the upper edge of the slot body, the chamfer radius of the slot chamfer is 0.5 mm to 1.5 mm, and the slot chamfer is used to guide the positioning claw of the charging gun housing to smoothly insert into the fixed slot.

[0011] The beneficial effects of adopting the above-mentioned improved scheme are as follows: The trapezoidal cross-section design of the card slot body achieves a reliable connection with the positioning claws of the charging gun housing. The structure with an upper opening width greater than the lower opening width creates a wedge-shaped locking effect, preventing loosening during use. The ratio of the upper opening width to the lower opening width is controlled within the range of 1.2 to 1.8, ensuring both locking effect and ease of installation and disassembly. The beveled angle of the card slot eliminates sharp edges, guides the positioning claws to insert smoothly, reduces installation resistance, improves assembly efficiency, and avoids component damage caused by forced assembly.

[0012] Furthermore, the supporting reinforcing ribs are radially distributed, the cross-section of the supporting reinforcing ribs is rectangular, the height of the supporting reinforcing ribs is equal to the thickness of the annular washer body, the width of the supporting reinforcing ribs is 3 mm to 8 mm, and the included angle between two adjacent supporting reinforcing ribs is 60 degrees.

[0013] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the radial distribution design of the supporting reinforcing ribs effectively improves the overall rigidity of the annular washer body, preventing deformation under radial loads. The rectangular cross-section of the supporting reinforcing ribs has good bending strength and can withstand various loads generated during charging. The design that the height of the supporting reinforcing ribs is equal to the thickness of the washer body ensures the continuity of load transfer, and the uniform distribution of adjacent supporting reinforcing ribs at a 60-degree angle achieves uniform load distribution, avoids stress concentration, and improves the overall strength and service life of the washer.

[0014] Furthermore, the wear-resistant protective sheet includes an upper protective sheet and a lower protective sheet; the upper protective sheet is bonded to the surface of the upper elastic layer, and the lower protective sheet is bonded to the surface of the lower elastic layer; the outer diameter of the upper and lower protective sheets is the same as the outer diameter of the annular washer body, and the inner diameter is the same as the inner diameter of the annular washer body; the thickness of the upper and lower protective sheets is 0.3 mm to 0.8 mm.

[0015] The beneficial effects of adopting the above-mentioned improved design are as follows: the double-sided protection design of the upper and lower protective sheets achieves comprehensive protection of the buffer elastic layer, effectively preventing wear and aging of the elastic layer during use. The design of the outer and inner diameters of the protective sheets perfectly matching the gasket body ensures the integrity of the protection range and avoids the existence of protection blind spots. The thickness is controlled within the range of 0.3 mm to 0.8 mm, which ensures the protective effect without significantly increasing the overall thickness of the gasket, maintaining the compactness of the product. The excellent wear resistance of PTFE material significantly extends the service life of the gasket.

[0016] Furthermore, the outer circumferential surface of the annular washer body is provided with a plurality of heat dissipation grooves, which extend along the axial direction of the annular washer body.

[0017] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the heat dissipation groove significantly improves the heat dissipation performance of the gasket, effectively reducing the heat accumulation caused by current flow during charging. The axial extension of the groove increases the heat dissipation surface area, promotes rapid heat dissipation, and avoids local overheating. Excellent heat dissipation not only protects the gasket material from high-temperature damage but also ensures that the charging gun head operates at a suitable temperature, improving charging efficiency and safety, and extending the service life of the entire charging system.

[0018] Furthermore, the inner surface of the anti-sway limiting ring is provided with multiple micro-convex textures, which are distributed in a grid pattern.

[0019] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: The grid-like distribution design of the micro-convex texture increases the friction between the inner surface of the anti-sway limiting ring and the outer surface of the charging gun head, further improving the anti-sway effect. The grid-like texture structure can better conform to the micro-morphology of the gun head surface, increasing the contact area and contact tightness. The micro-convex texture also has a certain buffering effect, which can absorb minor vibrations and impacts, reduce hard collisions between the gun head and the gasket, reduce wear, and improve the stability and reliability of the contact.

[0020] Furthermore, the surface of the supporting reinforcing rib is provided with a plurality of weight-reducing holes, which are circular holes with a diameter of 1 mm to 2 mm.

[0021] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: The weight-reducing holes effectively reduce the overall weight of the gasket while maintaining the strength of the supporting ribs, thus improving the product's lightweight level. The circular weight-reducing hole design avoids stress concentration and maintains the structural integrity of the supporting ribs. Controlling the diameter of the weight-reducing holes within the range of 1 mm to 2 mm achieves the weight reduction goal without excessively weakening the strength of the ribs. The lightweight design reduces the overall weight of the charging gun, easing the user's operational burden, while also reducing material consumption and improving the product's economy and environmental friendliness.

[0022] Furthermore, the number of heat dissipation grooves is 12, and the heat dissipation grooves are evenly distributed along the outer circumference of the annular washer body, and the height of the micro-convex texture is 0.1 mm to 0.3 mm.

[0023] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the equidistant distribution of the 12 heat dissipation grooves achieves uniform heat dissipation, avoiding localized poor heat dissipation. Precise control of the number of grooves ensures both effective heat dissipation and maintains the structural strength of the gasket. The height of the micro-convex texture, controlled within the range of 0.1 mm to 0.3 mm, ensures a friction-enhancing effect while avoiding excessive protrusion that could lead to accelerated wear. These precise geometric parameter controls achieve an optimal balance between heat dissipation performance, anti-sway effect, and structural strength, ensuring the stable and reliable operation of the gasket under various working conditions.

[0024] Compared with existing technologies, the beneficial effects of this utility model's integrated anti-sway and wear-resistant protective component for charging gun heads are as follows: This utility model effectively solves the problem of charging gun head swaying through the precise fit between the annular washer body and the anti-sway limiting ring, achieving accurate positioning and stable connection of the gun head. The limiting protrusions and grooves on the inner surface of the anti-sway limiting ring fit tightly against the outer surface of the charging gun head, forming a mechanical limit and eliminating radial sway. The buffer elastic layer uses high-quality rubber material, providing excellent buffer protection, effectively absorbing vibration and impact, and protecting the gun head from damage. The trapezoidal cross-section design of the fixing slot ensures a reliable connection with the outer shell, preventing loosening during use. The radial distribution of the supporting reinforcing ribs significantly improves the overall structural strength, enabling it to withstand various loads. The wear-resistant protective plate uses polytetrafluoroethylene material, which has excellent wear resistance and significantly extends its service life. The design of the heat dissipation groove improves heat dissipation performance and avoids overheating. The overall design organically combines multiple functions such as anti-sway, wear resistance, buffering, and heat dissipation, which significantly improves the connection stability, service life and safety performance of the charging gun, and provides an important guarantee for the reliable operation of the electric vehicle charging system. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model 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 these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of an integrated anti-sway and wear-resistant protective component for the head of a charging gun; Figure 2 A transverse cross-sectional view of an integrated anti-sway and wear-resistant protective component for the head of a charging gun; Figure 3 A longitudinal cross-sectional view of an integrated anti-sway and wear-resistant protective component for the head of a charging gun; The attached diagram lists the components represented by each number as follows: 1. Annular washer body; 2. Anti-sway limiting ring; 3. Buffer elastic layer; 4. Fixing slot; 5. Support reinforcing rib. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0028] like Figure 1The image shown is a first embodiment of an integrated anti-sway and wear-resistant protective component for a charging gun head provided by this utility model. In this embodiment, it includes: an annular washer body 1, an anti-sway limiting ring 2, a buffer elastic layer 3, a fixing groove 4, a supporting reinforcing rib 5, and a wear-resistant protective sheet. The annular washer body 1 has a hollow circular structure, and its inner diameter matches the outer diameter of the charging gun head. An anti-sway limiting ring 2 is provided on the inner circumferential surface of the annular washer body 1, and the anti-sway limiting ring 2 is evenly distributed along the inner circumferential surface of the annular washer body 1. The inner surface of the anti-sway limiting ring 2 is tightly fitted to the outer surface of the charging gun head. The upper and lower surfaces of the annular washer body 1 are respectively provided with… The ring has a buffer elastic layer 3 made of rubber material with a thickness of 2 mm to 5 mm. A fixing groove 4 is formed on the outer circumference of the annular washer body 1. The fixing groove 4 has a trapezoidal cross-section and a depth of one-third to one-half of the wall thickness of the annular washer body 1. Supporting reinforcing ribs 5 are provided in the radial direction of the annular washer body 1. The supporting reinforcing ribs 5 extend from the inner circumference of the annular washer body 1 to the outer circumference. There are 6 supporting reinforcing ribs 5, which are evenly distributed along the circumference. A wear-resistant protective sheet is bonded to the surface of the buffer elastic layer 3. The wear-resistant protective sheet is made of polytetrafluoroethylene material.

[0029] In the above technical solution, the anti-sway limiting ring 2 includes a limiting protrusion and a limiting groove; the limiting protrusion protrudes radially inward from the inner circumference of the annular washer body 1, and the height of the limiting protrusion is 1 mm to 3 mm; a limiting groove is formed between two adjacent limiting protrusions, and the width of the limiting groove matches the positioning boss on the outer surface of the charging gun head. The limiting groove is used to accommodate the positioning boss of the charging gun head to achieve anti-sway positioning.

[0030] Furthermore, in the above technical solution, the buffer elastic layer 3 includes an upper elastic layer and a lower elastic layer; the upper elastic layer is disposed on the upper surface of the annular washer body 1, and the lower elastic layer is disposed on the lower surface of the annular washer body 1; the material hardness of the upper elastic layer and the lower elastic layer is Shore A hardness of 60 to 80 degrees; the upper elastic layer and the lower elastic layer are integrally formed with the annular washer body 1 by a vulcanization bonding process.

[0031] Furthermore, in the above technical solution, the fixed slot 4 includes a slot body and a slot chamfer; the slot body has a trapezoidal cross-section, the upper width of the slot body is greater than the lower width, and the ratio of the upper width to the lower width is 1.2 to 1.8; a slot chamfer is provided on the upper edge of the slot body, and the chamfer radius of the slot chamfer is 0.5 mm to 1.5 mm. The slot chamfer is used to guide the positioning claw of the charging gun housing to smoothly insert into the fixed slot 4.

[0032] Furthermore, in the above technical solution, the supporting reinforcing ribs 5 are radially distributed, the cross-section of the supporting reinforcing ribs 5 is rectangular, the height of the supporting reinforcing ribs 5 is equal to the thickness of the annular washer body 1; the width of the supporting reinforcing ribs 5 is 3 mm to 8 mm, and the included angle between two adjacent supporting reinforcing ribs 5 is 60 degrees.

[0033] Furthermore, in the above technical solution, the wear-resistant protective sheet includes an upper protective sheet and a lower protective sheet; the upper protective sheet is bonded to the surface of the upper elastic layer, and the lower protective sheet is bonded to the surface of the lower elastic layer; the outer diameter of the upper and lower protective sheets is the same as the outer diameter of the annular washer body 1, and the inner diameter is the same as the inner diameter of the annular washer body 1; the thickness of the upper and lower protective sheets is 0.3 mm to 0.8 mm.

[0034] Furthermore, in the above technical solution, the outer circumferential surface of the annular washer body 1 is provided with a plurality of heat dissipation grooves, which extend along the axial direction of the annular washer body 1.

[0035] Furthermore, in the above technical solution, the inner surface of the anti-sway limiting ring 2 is provided with multiple micro-convex textures, which are distributed in a grid pattern.

[0036] Furthermore, in the above technical solution, the surface of the supporting reinforcing rib 5 is provided with multiple weight-reducing holes, which are circular holes with a diameter of 1 mm to 2 mm.

[0037] Furthermore, in the above technical solution, the number of heat dissipation grooves is 12, and the heat dissipation grooves are evenly distributed along the outer circumference of the annular washer body 1, with the height of the micro-convex texture being 0.1 mm to 0.3 mm.

[0038] The following is a specific embodiment 1 of this utility model: In this embodiment, the annular washer body is made of engineering plastic ABS material, with an outer diameter of 45 mm, an inner diameter of 25 mm, and a thickness of 8 mm, possessing good mechanical strength and dimensional stability. The anti-sway limiting ring is integrally formed on the inner circumferential surface of the washer body, containing 8 limiting protrusions, each with a height of 2 mm and a width of 3 mm, forming a limiting groove with a width of 4 mm between adjacent protrusions. The limiting protrusions have a trapezoidal cross-section, with a top width of 2 mm and a bottom width of 3 mm, precisely matching the positioning protrusion on the outer surface of the charging gun head. The buffer elastic layer consists of two layers, each 3 mm thick, made of nitrile rubber with a Shore A hardness of 70 degrees, integrally formed with the washer body through a vulcanization bonding process, forming a robust composite structure. The surface of the buffer elastic layer undergoes special treatment, exhibiting good elastic recovery performance and fatigue resistance. Four fixing slots are located on the outer circumference of the washer body, evenly spaced along the circumference. Each slot is 3 mm deep, 5 mm wide at the top, and 3 mm wide at the bottom, forming a 15-degree wedge angle. The bevel radius of the slots is 1 mm, and the surface is smooth and burr-free. Six supporting reinforcing ribs, made of the same ABS material as the washer body, are radially distributed. Each rib is 5 mm wide and 8 mm high, equal to the thickness of the washer body. The ribs have a rectangular cross-section with 1.5 mm diameter circular weight-reduction holes spaced 8 mm apart, achieving weight reduction while maintaining structural strength. The wear-resistant protective sheet is made of 0.5 mm thick polytetrafluoroethylene (PTFE) and is bonded to the surface of the buffer elastic layer with a special adhesive, achieving a bonding strength greater than 2 MPa. The protective sheet has a smooth surface, a coefficient of friction of less than 0.1, and excellent wear resistance. Twelve heat dissipation grooves are located on the outer circumference of the gasket body, extending axially. The grooves are 2 mm deep, 3 mm wide, and 6 mm long, forming a three-dimensional heat dissipation network in conjunction with the weight-reducing holes. The inner wall of the grooves features a corrugated design to further increase the heat dissipation surface area. The inner surface of the anti-sway limiting ring features a grid-like micro-convex texture with a texture height of 0.2 mm and a grid size of 2 mm × 2 mm, covering the entire inner surface and significantly improving the fit and friction with the charging head. The entire gasket weighs less than 35 grams, has a compact structure, is easy to install, and can meet the needs of various charging guns.

[0039] The following is another specific embodiment 2 of this utility model: Embodiment 2 is based on Embodiment 1, and further optimizes the heat dissipation performance. In addition to the original 12 axial heat dissipation grooves, 6 radial heat dissipation grooves are added. The radial heat dissipation grooves extend from the inner circumference to the outer circumference, with a depth of 1.5 mm and a width of 2 mm, forming a cross-heat dissipation network with the axial heat dissipation grooves. The radial heat dissipation grooves are staggered from the supporting reinforcing ribs to avoid affecting the structural strength. Simultaneously, thermally conductive fibers are embedded inside the buffer elastic layer. The thermally conductive fibers are made of carbon fiber material, with a diameter of 10 micrometers, and are uniformly distributed in the rubber matrix, with a volume fraction of 5%, significantly improving the thermal conductivity of the elastic layer. The addition of thermally conductive fibers not only enhances the heat dissipation performance but also improves the mechanical strength and fatigue resistance of the elastic layer. A microporous structure is added to the surface of the wear-resistant protective sheet. The micropores have a diameter of 50 micrometers, a depth of 100 micrometers, and a pore density of 200 per square centimeter, forming a honeycomb-like heat dissipation channel. This microporous structure further improves heat dissipation efficiency while maintaining wear resistance, making it particularly suitable for high-power fast charging scenarios.

[0040] The following is another specific embodiment 3 of this utility model: This embodiment 3 is based on embodiment 1, with special enhancements to the anti-sway performance. The number of limiting protrusions in the anti-sway limiting ring is increased to 12, the protrusion height is increased to 2.5 mm, and the shape of each protrusion is optimized into a dovetail groove structure with a top width of 1.5 mm and a bottom width of 4 mm, forming an inverted trapezoidal cross section, which precisely matches the dovetail protrusion of the charging gun head, achieving a more robust mechanical constraint. Elastic clamping plates are added to the inner wall of the limiting groove. The clamping plates are made of spring steel, with a thickness of 0.3 mm and a length of 5 mm. One plate is set on each side of the groove, and through elastic deformation, they tightly clamp the protrusion of the charging gun head, further enhancing the anti-sway effect. The buffer elastic layer adopts a dual-hardness design: the inner layer has a Shore A hardness of 60 degrees, and the outer layer has a Shore A hardness of 80 degrees. The inner layer provides good buffering performance, and the outer layer provides sufficient support strength. The two layers are firmly bonded together through chemical bonding, avoiding delamination. The number of supporting ribs has been increased to eight, and the cross-section has been changed to an I-beam shape, which significantly improves bending and torsional strength while keeping the weight the same, enabling it to withstand greater loads.

[0041] Specifically, the principle of this utility model is as follows: This utility model adopts a multi-layer composite structure design. The annular washer body provides the main support, the anti-sway limiting ring achieves precise positioning and anti-sway function, the buffer elastic layer provides buffer protection, the wear-resistant protective sheet provides wear resistance, the supporting reinforcing ribs enhance structural strength, and the heat dissipation groove provides heat dissipation. The working principle of the anti-sway limiting ring is that the mechanical contact between the limiting protrusion and the outer surface of the charging gun head forms radial constraint, and the cooperation between the limiting groove and the positioning protrusion of the gun head achieves axial positioning. Together, they eliminate the swing freedom of the gun head. The buffer elastic layer utilizes the viscoelastic properties of rubber material, undergoing elastic deformation under external force to absorb impact energy. After the external force is removed, it returns to its original shape, achieving the buffer protection function. The wear-resistant protective sheet utilizes the low coefficient of friction and high wear resistance of polytetrafluoroethylene material to reduce friction and wear on the contact surface, extending the service life of the washer. The supporting reinforcing ribs increase the bending strength by increasing the cross-sectional moment of inertia of the structure, and their radial distribution achieves uniform load transfer and dispersion. The heat dissipation grooves improve heat dissipation efficiency by increasing the heat dissipation surface area and promoting air convection, effectively controlling the gasket temperature. The synergistic effect of multiple functional modules achieves multiple functions such as anti-swaying, buffering, wear resistance, and heat dissipation, fundamentally solving the problems of charging gun head swaying and wear, and improving the stability and reliability of the charging connection.

[0042] The specific operation or use method of this utility model is as follows: First, install the integrated anti-sway and wear-resistant protective component of the charging gun head onto the designated position of the charging gun shell, ensuring that the fixing slot and the positioning claw of the shell are accurately aligned. Gently press the washer to allow the positioning claw to smoothly insert into the fixing slot; a slight click indicates that the installation is in place. After installation, check whether the washer is flat and fits snugly, and whether the anti-sway limiting ring is in close contact with the outer surface of the gun head. During charging, insert the charging gun head with the washer into the vehicle's charging port. The anti-sway limiting ring of the washer automatically forms a mechanical constraint with the outer surface of the gun head, eliminating swaying. The buffer elastic layer undergoes elastic deformation during insertion, relieving impact and protecting the gun head and charging port. During charging, the washer bears the tensile force from the charging cable and the weight of the gun head. The supporting reinforcing ribs evenly distribute the load across the entire washer structure, preventing local deformation. The heat dissipation groove promotes heat dissipation, keeping the washer operating at a suitable temperature. When the charging gun is removed after charging, the wear-resistant protective sheet reduces friction with the charging port, reducing wear. During long-term use, the condition of the gaskets should be checked regularly for wear, deformation, or aging, and replaced promptly if necessary. For cleaning and maintenance, gently wipe the surface with a soft cloth dampened with a neutral detergent; avoid scratching the wear-resistant protective sheet with sharp objects. When storing, avoid direct sunlight and high temperatures; keep the area dry and well-ventilated to ensure stable gasket performance.

Claims

1. A charging gun head anti-sway and wear-resistant integrated protective component, characterized in that, include: The device comprises an annular washer body, an anti-sway limiting ring, a buffer elastic layer, a fixing groove, supporting reinforcing ribs, and a wear-resistant protective sheet. The annular washer body has a hollow circular structure, and its inner diameter matches the outer diameter of the charging gun head. An anti-sway limiting ring is provided on the inner circumference of the annular washer body, and the anti-sway limiting rings are evenly distributed along the inner circumference of the annular washer body. The inner surface of the anti-sway limiting ring is in close contact with the outer surface of the charging gun head. Buffer elastic layers are provided on the upper and lower surfaces of the annular washer body, and the buffer elastic layers are made of rubber material. The thickness of the elastic layer is 2 mm to 5 mm; a fixing groove is provided on the outer circumference of the annular washer body, the fixing groove has a trapezoidal cross-section structure, and the depth of the fixing groove is one-third to one-half of the wall thickness of the annular washer body; a supporting reinforcing rib is provided in the radial direction of the annular washer body, the supporting reinforcing rib extends from the inner circumference of the annular washer body to the outer circumference, the number of supporting reinforcing ribs is 6 and they are evenly distributed along the circumference; a wear-resistant protective sheet is bonded to the surface of the buffer elastic layer, the wear-resistant protective sheet is made of polytetrafluoroethylene material.

2. The integrated anti-sway and wear-resistant protective component for the charging gun head according to claim 1, characterized in that, The anti-sway limiting ring includes a limiting protrusion and a limiting groove; the limiting protrusion protrudes radially inward from the inner circumference of the annular washer body, and the height of the limiting protrusion is 1 mm to 3 mm; a limiting groove is formed between two adjacent limiting protrusions, and the width of the limiting groove matches the positioning boss on the outer surface of the charging gun head. The limiting groove is used to accommodate the positioning boss of the charging gun head to achieve anti-sway positioning.

3. The integrated anti-sway and wear-resistant protective component for the charging gun head according to claim 2, characterized in that, The buffer elastic layer includes an upper elastic layer and a lower elastic layer; the upper elastic layer is disposed on the upper surface of the annular washer body, and the lower elastic layer is disposed on the lower surface of the annular washer body; the material hardness of the upper elastic layer and the lower elastic layer is Shore A hardness of 60 to 80 degrees; the upper elastic layer and the lower elastic layer are integrally formed with the annular washer body by a vulcanization bonding process.

4. The integrated anti-sway and wear-resistant protective component for the charging gun head according to claim 3, characterized in that, The fixed slot includes a slot body and a slot bevel; the slot body has a trapezoidal cross-section, and the upper opening width of the slot body is greater than the lower opening width, with the ratio of the upper opening width to the lower opening width being 1.2 to 1.8; a slot bevel is provided at the upper edge of the slot body, with a chamfer radius of 0.5 mm to 1.5 mm, and the slot bevel is used to guide the positioning claw of the charging gun housing to smoothly insert into the fixed slot.

5. The integrated anti-sway and wear-resistant protective component for the charging gun head according to claim 4, characterized in that, The supporting reinforcing ribs are radially distributed, with a rectangular cross-section. The height of the supporting reinforcing ribs is equal to the thickness of the annular washer body. The width of the supporting reinforcing ribs is 3 mm to 8 mm, and the included angle between two adjacent supporting reinforcing ribs is 60 degrees.

6. The integrated anti-sway and wear-resistant protective component for the charging gun head according to claim 5, characterized in that, The wear-resistant protective sheet includes an upper protective sheet and a lower protective sheet; the upper protective sheet is bonded to the surface of the upper elastic layer, and the lower protective sheet is bonded to the surface of the lower elastic layer; the outer diameter of the upper and lower protective sheets is the same as the outer diameter of the annular washer body, and the inner diameter is the same as the inner diameter of the annular washer body; the thickness of the upper and lower protective sheets is 0.3 mm to 0.8 mm.

7. The integrated anti-sway and wear-resistant protective component for the charging gun head according to claim 6, characterized in that, The outer circumferential surface of the annular washer body is provided with multiple heat dissipation grooves, which extend along the axial direction of the annular washer body.

8. The integrated anti-sway and wear-resistant protective component for the charging gun head according to claim 7, characterized in that, The inner surface of the anti-sway limiting ring is provided with multiple micro-convex textures, which are distributed in a grid pattern.

9. The integrated anti-sway and wear-resistant protective component for the charging gun head according to claim 8, characterized in that, The surface of the supporting reinforcing rib is provided with multiple weight-reducing holes, which are circular holes with a diameter of 1 mm to 2 mm.

10. The integrated anti-sway and wear-resistant protective assembly for the head of a charging gun according to claim 9, characterized in that, The number of heat dissipation grooves is 12, and the heat dissipation grooves are evenly distributed along the outer circumference of the annular washer body. The height of the micro-convex texture is 0.1 mm to 0.3 mm.

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