Impact-resistant reinforcing structure of a new material for washing machine door and window screen

Abstract

This utility model provides a new impact-resistant reinforced structure for washing machine door and window screens, belonging to the technical field of washing machine door and window screens. The new impact-resistant reinforced structure includes a screen body and a reinforcing frame. The reinforcing frame is disposed in the edge region of the screen body. The reinforcing frame includes an outer frame and reinforcing ribs embedded within the outer frame. The inner wall of the outer frame is fixedly connected to the edge of the screen body by adhesive bonding. The reinforcing ribs are distributed circumferentially along the outer frame, and the cross-section of each reinforcing rib is trapezoidal. The wide side of each reinforcing rib is fitted to the inner wall of the outer frame. This design solves the problems of existing reinforcing structures that often use simple edge-wrapping methods, which cannot effectively disperse impact force and have limited reinforcement effects, or that use overall thickening methods, leading to material waste and affecting the light transmittance of the screen.

Description

Technical Field

[0001] This utility model belongs to the field of washing machine door and window screen technology, specifically, it relates to an impact-resistant reinforced structure of a new material for washing machine door and window screens. Background Technology

[0002] As an essential cleaning appliance in modern households, washing machines typically have an observation window on their doors for users to monitor the washing process. The window material needs to be translucent, breathable, and possess sufficient strength. Currently, the window is often made of woven fiber mesh or transparent plastic film. These materials are subjected to impacts from the high-speed rotating clothes inside the drum during normal operation, especially during the spin-drying stage when the speed can exceed 1000 revolutions per minute. Furthermore, frequent opening and closing of the washing machine door causes impacts and friction between the door frame and the window. Over time, the edges of the window are prone to tearing or loosening. Current technology typically addresses this issue by using simple plastic or metal frames to secure the window edges, but this method... These existing technologies only provide basic edge protection. When subjected to significant impact, the frame itself lacks rigidity and cannot effectively distribute stress. The impact force is concentrated at the connection between the window and the frame, leading to connection failure. Another technical solution is to thicken the window material as a whole to increase strength. However, this method not only increases material costs and weight but also reduces the light transmittance of the window, affecting the viewing effect. Furthermore, the increased flexibility of the thickened window makes it more prone to brittle fracture under impact. Another solution is to reinforce the inside of the window with a metal mesh. However, the metal mesh completely obstructs the view and is prone to corrosion. All these existing technical solutions have drawbacks such as limited reinforcement effect, complex structure, high cost, or impact on functionality, and cannot meet the higher requirements of modern washing machines for the impact resistance of the window. Utility Model Content

[0003] In view of this, the present invention provides a new impact-resistant reinforcement structure for washing machine door and window screens. This structure can solve the problem that existing washing machine door and window screens are easily impacted by clothes or the impact force when the door is opened and closed during high-speed operation of the washing machine. Due to the thinness of the screen material and the lack of an effective edge reinforcement structure, the edges of the screen are prone to tearing or deformation, and the connection between the screen and the door frame is prone to loosening and falling off, which seriously affects the service life and safety of the washing machine. In particular, stress concentration areas such as the four corners of the screen are more prone to damage. Existing reinforcement structures often use simple edge wrapping, which cannot effectively disperse the impact force and has limited reinforcement effect, or use overall thickening, which leads to material waste and affects the light transmittance of the screen.

[0004] This utility model is implemented as follows:

[0005] This utility model provides a new impact-resistant reinforced structure for washing machine door and window screens, comprising a screen body and a reinforcing frame. The reinforcing frame is disposed on the edge region of the screen body and includes an outer frame and reinforcing ribs embedded in the outer frame. The inner wall of the outer frame is fixedly connected to the edge of the screen body by adhesive bonding. The reinforcing ribs are distributed circumferentially along the outer frame, and the cross-section of the reinforcing ribs is trapezoidal. The wide side of the reinforcing ribs is attached to the inner wall of the outer frame, and the narrow side of the reinforcing ribs extends toward the center of the screen body. The reinforcing ribs and the outer frame form an embedded snap-fit ​​fit. Thickened portions are provided at the four corners of the outer frame, and the thickness of the thickened portions is greater than the thickness of other parts of the outer frame.

[0006] The technical effects of the impact-resistant reinforcement structure of the new material for washing machine door and window screens provided by this utility model are as follows: By setting a reinforcing frame in the edge area of ​​the screen body and embedding trapezoidal cross-section reinforcing ribs distributed circumferentially in the outer frame, the impact force can be dispersed to multiple positions of the outer frame through the reinforcing ribs, avoiding the impact force from concentrating on a single point and causing the screen body to tear or deform. At the same time, the trapezoidal cross-section design of the reinforcing ribs increases the contact area between the wide side and the outer frame, improving the connection strength, while the narrow side extends towards the center of the screen body, reducing the impact on the light transmission of the screen body. Thickened sections are set at the four corners of the outer frame to specifically strengthen the corner areas most susceptible to impact damage. The overall structure is simple, reliable, and has a significant reinforcement effect.

[0007] Based on the above technical solution, the impact-resistant reinforcement structure of the new material for washing machine door and window screens of this utility model can be further improved as follows:

[0008] The reinforcing ribs are spaced 50-80 mm apart along the circumference of the outer frame.

[0009] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by limiting the spacing of the reinforcing ribs along the circumference of the outer frame to 50~80mm, the distribution density of the reinforcing ribs is moderate, which not only ensures sufficient support and stress dispersion for the edge area of ​​the window screen body, but also avoids the problem of material waste and reduced flexibility of the window screen body due to excessively dense reinforcing ribs. Actual testing has shown that this spacing distance can achieve synergistic force sharing between adjacent reinforcing ribs under impact, effectively preventing stress concentration in the area between the reinforcing ribs of the window screen body.

[0010] Furthermore, the ratio of the width length to the narrow length of the trapezoidal cross-section of the reinforcing rib is 2:1 to 3:1.

[0011] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: By limiting the ratio of the width length to the narrow length of the trapezoidal cross section of the reinforcing rib to 2:1 to 3:1, the reinforcing rib has sufficient bottom width to form a stable connection with the outer frame, and also has an appropriate top narrow side width to reduce obstruction of the window screen body. This ratio range enables the reinforcing rib to have good bending stiffness when subjected to impact force perpendicular to the surface of the window screen body. The side slope of the trapezoidal structure can guide the impact force to be transmitted along the slope towards the outer frame, avoiding the impact force from acting directly on the weak parts of the window screen body. At the same time, this ratio relationship enables the reinforcing rib itself to have a reasonable stress distribution to avoid excessive local stress leading to fracture.

[0012] Furthermore, the cross-section of the outer frame is L-shaped, with the long side of the L-shaped structure fitting against the edge of the window screen body, and the short side of the L-shaped structure extending outward to form a support edge.

[0013] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by designing the cross-section of the outer frame as an L-shaped structure, the long side fits into the edge of the window screen body to provide sufficient bonding area to ensure the connection is firm. The support side formed by the outward extension of the short side can contact the door frame when the washing machine door is closed to form a buffer support, avoiding the door and window screen from directly bearing the hard impact of the door frame. The L-shaped structure gives the outer frame a larger bending section modulus, so the outer frame is not easy to bend and deform when the window screen body is impacted. The outward extension of the support side can also provide an additional installation mating surface for the entire reinforced structure to facilitate fixing with the washing machine door.

[0014] Furthermore, the outer surface of the support edge is provided with multiple anti-slip patterns, which extend along the length of the support edge, and the cross-section of the anti-slip patterns is wavy or serrated.

[0015] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by setting wavy or sawtooth anti-slip textures extending along the length direction on the outer surface of the support edge, the outer frame has a larger coefficient of friction when it contacts the washing machine door frame, preventing the window screen from shifting or loosening during washing machine vibration or door opening and closing. The wavy or sawtooth cross-section of the anti-slip texture increases the micro-roughness of the contact surface. At the same time, this texture design can absorb some of the impact energy through the elastic deformation of the texture when it is impacted, reducing the peak impact force transmitted to the window screen body. The setting of multiple textures makes the anti-slip and buffering effects evenly distributed along the entire length of the support edge.

[0016] Furthermore, the engagement between the reinforcing rib and the inner wall of the outer frame is achieved through a slot and a protrusion. The inner wall of the outer frame is provided with a slot, and the wide side of the reinforcing rib is provided with a protrusion that engages with the slot.

[0017] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by opening a slot on the inner wall of the outer frame and setting a matching protrusion on the wide side of the reinforcing rib, a mechanical snap-fit ​​is achieved between the reinforcing rib and the outer frame, so that the reinforcing rib will not come out of the outer frame when subjected to an impact force perpendicular to the surface of the window screen body. The matching method of the slot and the protrusion facilitates the assembly and replacement of the reinforcing rib. At the same time, the snap-fit ​​structure can form a pre-tightening force between the reinforcing rib and the outer frame, eliminating the gap between the two and avoiding relative displacement and impact noise under impact. The snap-fit ​​also enables the reinforcing rib to effectively transfer the impact force it bears to the overall structure of the outer frame.

[0018] Furthermore, the thickness of the thickened portion is 1.5 to 2 times the thickness of other parts of the outer frame, and the length of the thickened portion extending from the corner of the outer frame to both sides is 30 to 50 mm.

[0019] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: By setting thickened sections at the four corners of the outer frame, with a thickness of 1.5 to 2 times that of other parts, and extending the thickened sections 30 to 50 mm from the corners to both sides, the weakest corner areas of the window screen structure are specifically strengthened. This is because the corners have the highest stress concentration and are most prone to cracking or tearing when subjected to impact. The thickened sections give the corners greater impact resistance and rigidity. The setting of the extension length ensures a smooth transition between the thickened sections and other parts of the outer frame, avoiding the formation of new stress concentration points at abrupt changes in thickness. This optimized size range ensures both corner strength and controls material usage.

[0020] Furthermore, the outer frame is made of polyvinyl chloride or polypropylene, and the reinforcing ribs are made of polycarbonate or acrylonitrile butadiene styrene copolymer.

[0021] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by using polyvinyl chloride or polypropylene to make the outer frame, the good weather resistance and corrosion resistance of these materials ensure that the outer frame will not age or corrode during long-term use in the humid environment of the washing machine. By using polycarbonate or acrylonitrile butadiene styrene copolymer to make the reinforcing ribs, the excellent impact resistance and rigidity of these materials ensure that the reinforcing ribs will not break or permanently deform when subjected to impact. The reasonable combination of the outer frame material and the reinforcing rib material makes the overall structure have both the necessary flexibility to absorb impact energy and sufficient rigidity to maintain the stability of the window screen shape. The materials selected are all well-known and mature materials with good processing performance and controllable cost.

[0022] Furthermore, the window screen body is a fiber woven mesh structure, and the edge portion of the window screen body is folded inward to form a double-layer structure, which is clamped and fixed by the inner wall of the outer frame.

[0023] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by folding the edge part of the window screen body inward to form a double-layer structure and clamping and fixing it with the inner wall of the outer frame, the connection area between the window screen body and the outer frame is doubled, which significantly improves the connection strength and prevents the window screen body from coming out of the outer frame when it is impacted. The double-layer structure increases the thickness and strength of the edge part, giving the most vulnerable edge area of ​​the window screen body better tear resistance. The fiber woven mesh structure of the window screen body has good air permeability and flexibility. The double-layer structure formed by folding is compacted under the clamping of the outer frame, making the fibers more tightly bonded and improving the overall impact resistance.

[0024] Furthermore, the distance between the narrow side of the reinforcing rib and the double-layer structure of the window screen body is 2~5mm, and the height dimension of the reinforcing rib is smaller than the height dimension of the outer frame.

[0025] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: By limiting the distance between the narrow edge of the reinforcing rib and the double-layer structure of the window screen body to 2~5mm, it is ensured that the reinforcing rib has a sufficiently close support distance to the window screen body, so that the impact force can be quickly transmitted from the window screen body to the reinforcing rib, shortening the force transmission path and reducing the deformation of the window screen body. This distance setting avoids friction and wear caused by the reinforcing rib directly contacting the window screen body. By limiting the height dimension of the reinforcing rib to be smaller than the height dimension of the outer frame, the reinforcing rib is completely within the protection range of the outer frame, avoiding the reinforcing rib being subjected to direct external force during use. At the same time, this dimensional relationship ensures the constraint effect of the outer frame on the entire reinforcing structure, enabling all components to work together.

[0026] Compared with existing technologies, the beneficial effects of the impact-resistant reinforcement structure of the new material for washing machine door and window screens provided by this utility model are as follows: This utility model sets a reinforcing frame composed of an outer frame and reinforcing ribs in the edge area of ​​the window screen body. The trapezoidal cross-sectional structure and circumferential spacing of the reinforcing ribs effectively disperse the impact force, allowing the window screen to transfer the force to multiple reinforcing ribs and ultimately disperse it to the overall structure of the outer frame when impacted, avoiding localized damage caused by stress concentration. The L-shaped cross-sectional design of the outer frame gives it greater bending stiffness and more functional surfaces. The snap-fit ​​connection between the reinforcing ribs and the outer frame ensures a stable connection between the two under impact. The double-layered folding structure at the edge of the main body is clamped and fixed by the outer frame, greatly improving the connection strength. The thickened sections at the four corners are designed to specifically reinforce the weakest areas. The anti-slip texture on the support edge increases friction with the door frame and provides a cushioning effect. The overall structure achieves excellent impact resistance through reasonable material selection and geometric design. The number of parts is controlled to less than four, making the structure simple and easy to manufacture and assemble. The reasonable design of the cooperation relationship between the parts ensures coordinated work. Compared with the existing technology, it significantly improves the service life and reliability of the washing machine door and window screen, reduces maintenance costs, and maintains good light transmission and ventilation of the screen, meeting the usage requirements of the washing machine observation window. Attached Figure Description

[0027] 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.

[0028] Figure 1 A schematic diagram of the impact-resistant reinforced structure of a new material for washing machine door and window screens;

[0029] Figure 2 A structural diagram to reinforce the framework;

[0030] Figure 3 This is a schematic diagram of the thickened section;

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 10. Window screen body; 20. Reinforcing frame; 21. Outer frame; 211. Thickened part; 22. Reinforcing ribs. Detailed Implementation

[0033] 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.

[0034] like Figure 1-3 The diagram shows a structural schematic of an impact-resistant reinforced structure for a new material for washing machine door and window screens provided by this utility model. The diagram includes a screen body 10 and a reinforcing frame 20. The reinforcing frame is located at the edge of the screen body and includes an outer frame 21 and reinforcing ribs 22 embedded within the outer frame. The inner wall of the outer frame is fixedly connected to the edge of the screen body by adhesive bonding. The reinforcing ribs are distributed circumferentially along the outer frame, and their cross-section is trapezoidal. The wide side of the reinforcing ribs fits against the inner wall of the outer frame, while the narrow side extends towards the center of the screen body. An embedded snap-fit ​​connection is formed between the reinforcing ribs and the outer frame. Thickened portions 211 are provided at the four corners of the outer frame, with the thickness of the thickened portions exceeding the thickness of other parts of the outer frame.

[0035] In the above technical solution, the spacing between the reinforcing ribs along the circumference of the outer frame is 50~80mm.

[0036] Furthermore, in the above technical solution, the ratio of the width length to the narrow length of the trapezoidal cross-section of the reinforcing rib is 2:1 to 3:1.

[0037] Furthermore, in the above technical solution, the cross-section of the outer frame is L-shaped, the long side of the L-shaped structure fits into the edge of the window screen body, and the short side of the L-shaped structure extends outward to form a support edge.

[0038] Furthermore, in the above technical solution, the outer surface of the support edge is provided with multiple anti-slip patterns, which extend along the length of the support edge, and the cross-section of the anti-slip patterns is wavy or serrated.

[0039] Furthermore, in the above technical solution, the engagement between the reinforcing rib and the inner wall of the outer frame is achieved through a slot and a protrusion. The inner wall of the outer frame is provided with a slot, and the wide side of the reinforcing rib is provided with a protrusion that engages with the slot.

[0040] Furthermore, in the above technical solution, the thickness of the thickened part is 1.5 to 2 times the thickness of other parts of the outer frame, and the length of the thickened part extending from the corner of the outer frame to both sides is 30 to 50 mm.

[0041] Furthermore, in the above technical solution, the outer frame is made of polyvinyl chloride or polypropylene, and the reinforcing ribs are made of polycarbonate or acrylonitrile butadiene styrene copolymer.

[0042] Furthermore, in the above technical solution, the window screen body is a fiber woven mesh structure, and the edge part of the window screen body is folded inward to form a double-layer structure, which is clamped and fixed by the inner wall of the outer frame.

[0043] Furthermore, in the above technical solution, the distance between the narrow edge of the reinforcing rib and the double-layer structure of the window screen body is 2~5mm, and the height dimension of the reinforcing rib is smaller than the height dimension of the outer frame.

[0044] The following is a specific embodiment 1 of this utility model: The impact-resistant reinforced structure of the washing machine door and window screen in this embodiment is applied to the front observation window of a drum washing machine. The screen body is made of a mesh material woven from polyester fiber, with a fiber diameter of 0.3mm and a weaving density of 20 warp threads and 20 weft threads per square centimeter. The overall size of the screen body is a circle with a diameter of 300mm. The edge is folded inward with a width of 15mm to form a double-layer structure. The outer frame is made of polyvinyl chloride material through injection molding. The outer frame is in the shape of a ring with an outer diameter of 330mm and an inner diameter of 300mm. The cross-section of the outer frame is an L-shaped structure. The long side of the L-shaped structure is 15mm long and 3mm thick, and the short side, i.e., the support side, is 8mm long. The thickness is 3mm. The outer surface of the support edge has 36 anti-slip grooves along the circumference, each groove being 1mm wide and 0.5mm deep. The groove cross-section is wavy, with a height difference of 0.5mm between the crests and troughs. The inner wall of the outer frame, i.e., the inner side of the L-shaped long side, has 12 slots along the circumference, each slot being 2mm deep and 3mm wide, evenly distributed around the circumference. The arc length between adjacent slots is 78.5mm. Reinforcing ribs are made of polycarbonate material, with 12 ribs embedded in the 12 slots. Each reinforcing rib is 78.5mm long, with a trapezoidal cross-section: a wide side length of 6mm, a narrow side length of 2mm, and a height of 10mm. The inclined sides of the trapezoid are perpendicular to the bottom... The included angle of the edge is 65°. Each side of the wide edge of the reinforcing rib has a 1mm wide and 1.5mm high protrusion. The protrusion and slot cooperate to fix the reinforcing rib to the outer frame. The distance between the narrow edge of the reinforcing rib and the double-layer structure of the window screen body is 3mm. The height of the reinforcing rib (10mm) is less than the total height of the L-shaped structure of the outer frame (12mm). The outer frame has thickened sections at four quadrants of the ring (0°, 90°, 180°, and 270°). Each thickened section is 5mm thick, 1.67 times the thickness of the other parts of the outer frame (3mm). The thickened sections extend 40mm from the corners along both sides of the circumference. The thickened sections are connected to the other parts of the outer frame by an arc transition to avoid abrupt changes in thickness. The double-layer folding edge of the window screen body... After being coated with polyurethane adhesive, the edge is clamped and fixed by the L-shaped long side of the outer frame. After the adhesive cures, the peel strength is greater than 50N / 25mm. The total weight of the entire reinforced structure is 180 grams. After being installed on the washing machine door, an impact test is conducted. A 0.5kg steel ball is dropped from a height of 300mm to impact the center of the window screen. The maximum deformation of the window screen body is 8mm. After the impact is removed, the window screen completely returns to its original shape without permanent deformation or tearing. There is no loosening at the connection between the outer frame and the window screen body. The reinforcing ribs are firmly connected to the outer frame without coming off. There are no cracks or damage at the four thickened parts. This structure can effectively withstand various impact loads during normal use of the washing machine and has a service life of more than 10 years or 50,000 door opening and closing cycles.

[0045] The following is another specific embodiment 2 of this utility model: This embodiment 2 is based on embodiment 1, with the number of reinforcing ribs increased to 16, and the number of slots on the inner wall of the outer frame also increased to 16. The arc length between adjacent slots is shortened to 58.9mm, and the length of each reinforcing rib is adjusted accordingly to 58.9mm. The spacing between the reinforcing ribs along the circumference of the outer frame is reduced from 78.5mm to 58.9mm. This improvement increases the distribution density of the reinforcing ribs, allowing the window screen body to receive more support from the reinforcing ribs when impacted, further enhancing the dispersion effect of the impact force. The span of the window screen body between adjacent reinforcing ribs is reduced, decreasing the deformation of the window screen in the area between the reinforcing ribs. This embodiment is particularly suitable for large-capacity washing machines or washing machine models with high spin speeds. Under the same impact conditions, the maximum deformation of the window screen body is reduced from 8mm to 5mm, improving the impact resistance performance by approximately 37.5%. However, the increase in the number of reinforcing ribs increases material costs and assembly time by approximately 20%. This structure has good application prospects in high-end washing machine products.

[0046] The following is another specific embodiment 3 of this utility model: Embodiment 3 is based on Embodiment 1, with an additional buffer layer added to the inner side of the support edge of the outer frame. The buffer layer is made of 2mm thick polyurethane foam material and is fixed to the inner surface of the support edge by adhesive bonding. The length of the buffer layer is the same as that of the support edge, continuously arranged along the circumference of the outer frame, and the width is 6mm, covering most of the inner area of ​​the support edge. The hardness of the buffer layer is 60 to 70° as measured by a Shore A hardness tester, exhibiting good elasticity and energy absorption capacity. When the washing machine door closes, the door frame first contacts the buffer layer, and the buffer layer undergoes elastic compression to absorb the impact energy when the door closes, reducing the peak impact force by 30% to 40%. The impact load transmitted to the window screen body is reduced by 0%. The buffer pad can also compensate for the assembly gap between the door frame and the window screen, making the contact between the two more uniform and stable, and avoiding stress concentration caused by poor local contact. This improved solution further enhances the impact resistance performance while maintaining all the technical features of Embodiment 1. It is particularly suitable for occasions where the door is frequently opened and closed or where the environment has large vibrations. The polyurethane foam material of the buffer pad has good water resistance and aging resistance. It will not degrade in performance after long-term use in the humid environment of the washing machine. The overall weight of this embodiment increases by about 15 grams and the cost increases by about 8%, but the impact resistance and user comfort are significantly improved, making it highly competitive in the mid-to-high-end washing machine market.

[0047] Specifically, the principle of this utility model is as follows: The core technical principle of this utility model lies in achieving the gradual dispersion and absorption of impact force through a multi-layered structural design. When the window screen body is subjected to an impact force perpendicular to its plane, the force first acts on the fiber woven mesh structure of the window screen body. Since the edge part of the window screen body is folded into a double-layer structure and clamped and fixed by the outer frame, the impact force will be quickly transmitted from the window screen body to the outer frame. The reinforcing ribs are embedded in the outer frame with a trapezoidal cross-section and are distributed circumferentially. Their narrow edges are only 2 to 5 mm away from the double-layer structure of the window screen body. This close-range configuration... This design allows impact force to be quickly transmitted to the nearest reinforcing rib through the elastic deformation of the window screen body. The trapezoidal cross-section design of the reinforcing rib ensures that its wide side fits closely to the inner wall of the outer frame. This significantly increases the contact area when the impact force is transmitted to the outer frame via the wide side of the reinforcing rib. According to the principle that pressure equals force divided by area, the increased contact area reduces the pressure per unit area, lowering the local stress level of the outer frame. Multiple reinforcing ribs are distributed circumferentially along the outer frame at intervals of 50 to 80 mm, ensuring that impact force acting on any location within the window screen body can be absorbed by one or more nearby reinforcing ribs. The reinforcing ribs distribute the impact force evenly around the circumference of the outer frame. The L-shaped cross-section of the outer frame has a larger flexural section modulus than a rectangular cross-section. When the impact force is transmitted to the outer frame through the reinforcing ribs, the long and short sides of the L-shape form two perpendicular support surfaces, enhancing the overall rigidity of the outer frame. The thickened sections at the four corners of the outer frame reinforce the areas where stress is most concentrated, as corners are the intersections of two straight edges, resulting in stress superposition. The thickened sections increase the flexural stiffness and shear strength of the corners by increasing the material thickness. The corners can withstand greater impact loads without damage. The interlocking fit between the reinforcing ribs and the outer frame, formed by slots and protrusions, prevents the reinforcing ribs from shifting or coming off relative to the outer frame under impact, ensuring a stable and reliable force transmission path. The entire reinforced structure, through the synergistic effect of multiple links such as the double-layer structure of the window screen body, the outer frame holding the reinforcing ribs for support and dispersion, and the thickening and strengthening of the corners, transforms the concentrated impact force into a uniformly distributed load distributed throughout the entire outer frame, significantly reducing the stress level of various parts of the window screen and fundamentally solving the technical problem of easy damage to the window screen.

[0048] When installing the impact-resistant reinforced structure for washing machine door and window screens according to this utility model, first lay the screen body flat on the work surface. Fold the four edges of the screen body inward to form a double-layer structure. The folding width should ensure that the double-layer structure is completely covered by the outer frame. Then, take out the reinforcing frame assembly, which has pre-assembled the reinforcing ribs into the outer frame at circumferential intervals of 50 to 80 mm using slots and protrusions. Align the long side of the L-shaped cross-section of the outer frame with the double-folded edge of the screen body, so that the inner wall of the outer frame fits against the edge of the screen body. After applying an appropriate amount of adhesive to the inner wall of the outer frame, press the outer frame firmly onto the edge of the screen body. Use clamps or pressure devices to maintain the pressure until the adhesive cures. The curing time depends on the type of adhesive and is usually 30 to 60 minutes. After bonding, check whether the connection between the outer frame and the screen body is firm, paying particular attention to the four corners. Check the connection of the thickened section, and then install the assembled window screen assembly into the reserved position on the washing machine door, so that the support edge of the outer frame contacts the washing machine door frame. The anti-slip texture on the support edge should fit tightly against the surface of the door frame. Fix the window screen assembly to the door with bolts or clips. When fixing, be careful not to overtighten the bolts to avoid deformation of the outer frame. After installation, perform a functional test. Close the washing machine door and observe whether the window screen is flat and without deformation. Start the washing machine and run the no-load or light-load test program to observe whether the window screen is stable and reliable during the vibration of the washing machine and the opening and closing of the door. Check whether the reinforcing ribs maintain an appropriate distance from the window screen body without friction. In daily use, regularly check whether there are any signs of loosening at the connection between the window screen and the outer frame. If cracks are found at the corners or edges of the outer frame, replace it in time. When cleaning the window screen, wipe it with a soft damp cloth and avoid scratching it with hard objects. Keep the anti-slip texture on the support edge clean to maintain a good anti-slip effect.

Claims

1. A novel impact-resistant reinforced structure for washing machine door and window screens, characterized in that, The device includes a window screen body and a reinforcing frame. The reinforcing frame is disposed in the edge area of ​​the window screen body. The reinforcing frame includes an outer frame and reinforcing ribs embedded in the outer frame. The inner sidewall of the outer frame is fixedly connected to the edge portion of the window screen body by adhesive bonding. The reinforcing ribs are distributed circumferentially along the outer frame. The cross-section of the reinforcing ribs is trapezoidal. The wide side of the reinforcing ribs is attached to the inner sidewall of the outer frame, and the narrow side of the reinforcing ribs extends towards the center of the window screen body. The reinforcing ribs and the outer frame form an embedded snap-fit ​​fit. Thickened portions are provided at the four corners of the outer frame, and the thickness of the thickened portions is greater than the thickness of other parts of the outer frame.

2. The impact-resistant reinforced structure of a new material for washing machine door and window screens according to claim 1, characterized in that, The reinforcing ribs are spaced 50-80 mm apart along the circumference of the outer frame.

3. The impact-resistant reinforced structure of a new material for washing machine door and window screens according to claim 2, characterized in that, The ratio of the width length to the narrow length of the trapezoidal cross-section of the reinforcing rib is 2:1 to 3:

1.

4. The impact-resistant reinforced structure of a new material for washing machine door and window screens according to claim 3, characterized in that, The outer frame has an L-shaped cross-section, with the long side of the L-shaped structure fitting against the edge of the window screen body, and the short side of the L-shaped structure extending outward to form a support edge.

5. The impact-resistant reinforced structure of a new material for washing machine door and window screens according to claim 4, characterized in that, The outer surface of the support edge is provided with multiple anti-slip textures, which extend along the length of the support edge, and the cross-section of the anti-slip textures is wavy or sawtooth-shaped.

6. The impact-resistant reinforced structure of a new material for washing machine door and window screens according to claim 5, characterized in that, The engagement between the reinforcing rib and the inner wall of the outer frame is achieved through a slot and a protrusion. The inner wall of the outer frame is provided with a slot, and the wide side of the reinforcing rib is provided with a protrusion that engages with the slot.

7. The impact-resistant reinforced structure of a new material for washing machine door and window screens according to claim 6, characterized in that, The thickness of the thickened part is 1.5 to 2 times the thickness of other parts of the outer frame, and the length of the thickened part extending from the corner of the outer frame to both sides is 30 to 50 mm.

8. The impact-resistant reinforced structure of a new material for washing machine door and window screens according to claim 7, characterized in that, The outer frame is made of polyvinyl chloride or polypropylene, and the reinforcing ribs are made of polycarbonate or acrylonitrile butadiene styrene copolymer.

9. The impact-resistant reinforced structure of a new material for washing machine door and window screens according to claim 8, characterized in that, The window screen body is a fiber woven mesh structure, and the edge part of the window screen body is folded inward to form a double-layer structure. The double-layer structure is clamped and fixed by the inner wall of the outer frame.

10. The impact-resistant reinforced structure of a new material for washing machine door and window screens according to claim 9, characterized in that, The distance between the narrow side of the reinforcing rib and the double-layer structure of the window screen body is 2~5mm, and the height dimension of the reinforcing rib is smaller than the height dimension of the outer frame.

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