Household appliance buffering top lining

Abstract

The utility model relates to a household appliance buffering top lining, which comprises a bottom plate and a hollow wall body fixed on the peripheral side of the bottom plate and formed by folding, the wall body comprises a first buffering wall, a second buffering wall, a third buffering wall and a fourth buffering wall, and a connecting piece is used for connecting two adjacent buffering walls; buffer pieces are arranged on the bottom plate and in the second buffer wall, the third buffer wall and the fourth buffer wall; a fixed rod is detachably connected in a space formed between the first buffer wall and the bottom plate; rectangular grooves are formed in the connecting position of the first buffer wall and the bottom plate at intervals, limiting pieces are arranged in the rectangular grooves, and the limiting pieces are connected with the first buffer wall and the bottom plate to form a hollow square space so as to limit position movement of the fixing rod. The buffering top lining of the household appliance meets the requirements of environmental protection, high temperature and high humidity, and is lower in cost, simpler in production process, convenient to package, transport and disassemble on the premise that the protection effect is not sacrificed.

Description

Technical Field

[0001] This utility model relates to the field of packaging technology, and more specifically, to a cushioning liner for household appliances. Background Technology

[0002] Electrical products are often handled using clamping equipment during transportation, requiring the cushioning top liner to provide sufficient support and cushioning to prevent damage from the clamping equipment. Most electrical products exported are shipped by sea, requiring stacking both during the overall logistics process and upon arrival, thus placing certain demands on the support performance of the top liner. Most top liners on the market are made of EPS molded foam combined with corrugated cardboard, offering advantages such as lightweight, waterproofing, and excellent cushioning performance, making them suitable for use as cushioning packaging for sea freight.

[0003] However, EPS (expanded polystyrene) liner materials have the following drawbacks: EPS is a white pollution material, which is detrimental to environmental protection. Currently, the EU and most countries have certain requirements for exported packaging materials. With increasing restrictions, it is not conducive to the export of products, making the switch to environmentally friendly materials essential. EPS material has strong cushioning effect, but its supporting effect is relatively poor. Electrical appliances are mostly heavy goods weighing 20kg-70kg or more; during stacking, the supporting effect of EPS in the liner may not meet the product's needs.

[0004] In addition, corrugated cardboard is made of paper materials. Electrical appliances are mostly exported by sea, where the environment is often characterized by high temperature and high humidity for a long time. The corrugated cardboard structure may be crushed or damaged by moisture, which can easily cause the packaging to lose or reduce its protective function and increase the damage rate of products during logistics.

[0005] Under the industry trend of energy conservation and emission reduction, it is necessary to provide sufficient protection, comply with environmental protection policies, adapt to the high temperature and humidity environment of maritime transport, minimize costs, and achieve the same cushioning effect as foam materials. Therefore, environmentally friendly and recyclable polypropylene can be used to manufacture hollow boards, which are then used to make appliance cushioning linings. Appliance cushioning linings made from hollow boards are lower in cost and have a simpler manufacturing process. Appliance cushioning linings made from polypropylene inherit the chemical corrosion resistance of polypropylene, resisting the erosion of various chemicals and adapting to the high temperature and humidity environment of maritime transport. Because they are made from hollow boards, appliance cushioning linings made from polypropylene inherit the shock-absorbing properties of hollow boards, achieving the same cushioning effect as foam materials.

[0006] Hollow core panels are a type of board with a hollow internal structure. They are typically made of two or more layers of flat panels connected by a specific process, forming uniformly distributed hollow layers in between. This hollow structure design significantly reduces the weight of the board while maintaining a certain strength; it also enhances the board's vibration resistance, giving hollow core panel appliance cushioning linings the same cushioning effect as foam materials. Specifically, regarding seismic performance, because polypropylene has a certain degree of flexibility and elasticity, the molecular chains of the hollow core panel can deform to a certain extent when subjected to vibration or impact, thereby absorbing and dispersing some energy and improving its vibration damping performance. When subjected to vibration, the hollow structure of the hollow core panel can act as a buffer and isolation mechanism, reducing the propagation of vibration waves within the board and improving its vibration damping performance. Furthermore, the hollow structure and wall thickness of the hollow core panel can be rationally designed to ensure relatively balanced vibration resistance in all directions. For example, by uniformly distributing the hollow structure, when vibrations come from different directions, the uniformly distributed hollow structure can evenly disperse and absorb energy, preventing excessive local stress that could damage the board. By designing an appropriate wall thickness, the plate material can be guaranteed to have sufficient strength and rigidity to resist the stress and deformation generated during vibration.

[0007] This allows the hollow board-made appliance cushioning liner to effectively protect the product from vibration and impact damage during transportation and storage.

[0008] To meet the requirements of environmental protection and high temperature and humidity, and without sacrificing the protective effect, a home appliance cushioning liner with lower cost and simpler production process is needed. It is easy to package, transport and disassemble. Utility Model Content

[0009] In view of this, the present invention provides a home appliance cushioning liner, which is made of environmentally friendly and recyclable polypropylene hollow board, reducing manufacturing costs and production cycle, facilitating packaging and transportation and disassembly, and can play a cushioning and shock-absorbing protective role for home appliances during sea transportation in high temperature and high humidity environments.

[0010] This application provides a home appliance cushioning top cover, including a base plate and a hollow wall formed by folding around the periphery of the base plate. The wall includes a first cushioning wall, a second cushioning wall, a third cushioning wall, and a fourth cushioning wall, with connectors connecting adjacent cushioning walls. Cushioning elements are provided on the base plate and inside the second, third, and fourth cushioning walls.

[0011] A fixing rod is detachably connected to the space formed between the first buffer wall and the base plate;

[0012] A rectangular groove is provided at intervals at the connection between the first buffer wall and the base plate. A limiting member is provided in the rectangular groove. The limiting member connects the first buffer wall and the base plate to form a hollow square space to restrict the positional movement of the fixing rod.

[0013] Optionally, the first buffer wall includes a first panel a, a first panel b, a first panel c, a first panel d, and a first panel e. The first panel a is fixed to the first panel b and the base plate at intervals. The first panel b and the base plate are connected by the first panel c and the first panel d. The first panel e is connected to the base plate.

[0014] Optionally, the second buffer wall includes a second panel a, a second panel b, a second panel c, and a second panel d. The second panel a and the second panel c are fixed at intervals on the base plate. The second panel b is connected between the second panel a and the second panel c. The second panel d connects the second panel c to the base plate.

[0015] Optionally, the third buffer wall includes a third panel a, a third panel b, a third panel c, and a third panel d. The third panel a and the third panel c are fixed at intervals on the base plate. The third panel b is connected between the third panel a and the third panel c. The third panel d connects the third panel c to the base plate.

[0016] Optionally, the fourth buffer wall includes a fourth panel a, a fourth panel b, a fourth panel c, and a fourth panel d. The fourth panel a and the fourth panel c are fixed to the base plate at intervals. The fourth panel b is connected between the fourth panel a and the fourth panel c. The fourth panel d connects the fourth panel c to the base plate. The third panel d is detachably connected to the second panel d and the fourth panel d.

[0017] Optionally, protective components are fixed at the connection between the second buffer wall and the third buffer wall, and at the connection between the third buffer wall and the fourth buffer wall.

[0018] Optionally, the wall is provided with slots.

[0019] Optionally, the four corners of the top liner are beveled.

[0020] Optionally, the wall is connected by ultrasonic fixing.

[0021] Optionally, the cushioning element is made of honeycomb cardboard or air vents.

[0022] Compared with the prior art, the appliance cushioning liner provided by this utility model achieves at least the following beneficial effects:

[0023] The appliance cushioning liner provided by this utility model is made of environmentally friendly and recyclable polypropylene hollow board, which can effectively reduce manufacturing costs and reduce material input and other expenses in the production process; it helps to shorten the production cycle, improve production efficiency, facilitate packaging and transportation, and facilitate subsequent disassembly operations; even in the harsh environment of high temperature and high humidity sea transportation, it can still play a cushioning and shock-absorbing protective role for home appliances, ensuring the safety of home appliances during transportation.

[0024] Connectors and limiting components provide stable structural support for the roof liner. The connectors link the first, second, third, and fourth buffer walls, ensuring a tight connection between them and forming a stable frame structure. This provides a basic support framework for the entire roof liner, ensuring that it will not easily deform or fall apart when subjected to pressure and impact, thus effectively protecting the internal home appliances.

[0025] The beveled corners of the top liner can prevent the edges and corners of home appliances from being squeezed or bumped during packaging and transportation. At the same time, it can make the top liner more stable when stacked, reduce the risk of damage caused by improper stacking, and improve the adaptability of the top liner in different usage environments.

[0026] Of course, any product implementing this utility model does not necessarily need to achieve all the technical effects described above at the same time.

[0027] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0028] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0029] Figure 1 This is a schematic diagram of the structure of the appliance buffer top liner provided by this utility model;

[0030] Figure 2 This is a structural schematic diagram of the appliance buffer top liner (without positioning parts and fixing rods) provided by this utility model;

[0031] Figure 3 This is a structural schematic diagram of the appliance buffer top liner frame (with buffer components on the bottom plate) provided by this utility model;

[0032] Figure 4 This is a structural schematic diagram of the appliance buffer top liner frame (without buffer components on the bottom plate) provided by this utility model;

[0033] Figure 5 This utility model provides Figure 4 Right view of part of the frame of the appliance cushioning top liner;

[0034] Figure 6 This utility model provides Figure 4 Front view of part of the frame of the appliance cushioning top;

[0035] Wherein: 10. Base plate; 11. First buffer wall; 12. Second buffer wall; 13. Third buffer wall; 14. Fourth buffer wall; 15. Rectangular groove; 16. Limiting component; 17. Protective component; 18. Buffer component; 19. Angled angle; 20. Slot; 21. Fixing rod; 22. Connecting component; 101. First panel a; 102. First panel b; 103. First panel c; 104. First panel d; 105. First panel e; 106. Second panel a; 107. Second panel b; 108. Second panel c; 109. Second panel d; 110. Third panel a; 111. Third panel b; 112. Third panel c; 113. Third panel d; 114. Fourth panel a; 115. Fourth panel b; 116. Fourth panel c; 117. Fourth panel d; 118. Buckle; 119. Slot. Detailed Implementation

[0036] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0037] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0038] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0039] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0040] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0041] In one alternative embodiment, refer to Figures 1-3The appliance cushioning top liner provided in this embodiment includes a base plate 10 and a hollow wall formed by folding around the base plate 10. The wall is provided with slots 20 for connecting corner inserts. The four corners of the top liner formed by the base plate 10 and the wall are provided with beveled angles 19. The wall is connected by ultrasonic fixation. The wall includes a first buffer wall 11, a second buffer wall 12, a third buffer wall 13, and a fourth buffer wall 14. Connectors 22 connect adjacent buffer walls to prevent adjacent buffer walls from being blown apart. To increase the cushioning support effect, buffer elements 18 are provided on the base plate 10 and inside the second buffer wall 12, the third buffer wall 13, and the fourth buffer wall 14. A fixing rod 21 is detachably connected within the space formed between the first buffer wall 11 and the base plate 10; a limiting member 16 is fixed between the first buffer wall 11 and the base plate 10. The limiting member 16 is used to restrict the position movement of the fixing rod 21. Specifically, a rectangular groove 15 is provided at intervals at the connection between the first buffer wall 11 and the base plate 10. The limiting member 16 is set in the rectangular groove 15, connecting the first buffer wall 11 and the base plate 10 to form a hollow square space to restrict the position movement of the fixing rod 21.

[0042] Understandably, the top liner installation is completed by assembling the connector 22, fixing rod 21, and limiting member 16 with the molded sheet material through folding and other connection methods. The molded sheet material is folded to form the base plate 10 and the hollow wall fixed to the side of the base plate 10, which can make full use of the hollow board material and reduce waste generation. During the manufacturing process, the material can be precisely cut and folded according to the design requirements to maximize material utilization and reduce production costs. At the same time, for some recyclable materials, such as polypropylene hollow boards, high material utilization also helps to reduce resource waste and environmental pollution.

[0043] As needed, slots 20 are made in the formed second buffer wall 12 and fourth buffer wall 14; the length of the panel forming the second buffer wall 12 and fourth buffer wall 14 is reasonably designed so that the slots 20 are naturally formed at the bend of the folded hollow wall, which facilitates the installation of corner bushings.

[0044] Connector 22 and limiting member 16 provide stable structural support for the roof liner. Connector 22 connects the first buffer wall 11, the second buffer wall 12, the third buffer wall 13, and the fourth buffer wall 14, ensuring a tight connection between them and forming a stable frame structure. This provides a basic support framework for the entire roof liner, ensuring that it will not easily deform or fall apart under pressure and impact, thus effectively protecting the internal home appliances. It should be noted that connector 22 is designed to form a stable frame structure, providing a basic support framework for the entire roof liner; therefore, as... Figures 3-4 As shown, connector 22 can be set to connect the hollow wall and the base plate 10 according to actual needs.

[0045] The limiting member 16 is located within the rectangular groove 15 at the connection between the first buffer wall 11 and the base plate 10. Connecting the first buffer wall 11 and the base plate 10 to form a hollow square space restricts the movement of the fixing rod 21, ensuring the stability of the fixing rod 21 within the top liner structure. This further enhances the overall structural strength of the top liner, enabling it to withstand greater external forces without deformation. When the top liner is subjected to external impact, the connecting member 22 and the limiting member 16 maintain a stable connection between the first buffer wall 11, the second buffer wall 12, the third buffer wall 13, and the fourth buffer wall 14 and the base plate 10. This ensures that the hollow plate can fully utilize its buffering performance, evenly distributing the impact force throughout the entire top liner structure, preventing excessive localized stress and damage, thus providing comprehensive buffer protection for home appliances.

[0046] Setting beveled angles (19°) at the four corners of the lining formed by the base plate 10 and the wall increases the overall stability of the lining, ensuring good stability under stress in different directions and preventing deformation. It also improves stress distribution under load, making stress more evenly distributed on the lining surface and preventing sharp right angles from creating stress concentration points that could lead to excessive local stress and structural damage. Furthermore, it prevents sharp right angles from scratching the outer plastic packaging and avoids direct exposure of the lining to the high temperature and humidity of sea transport.

[0047] As is understandable, ultrasonic fixing utilizes an ultrasonic generator to produce high-frequency vibrations, which are then converted into mechanical energy by a transducer, causing the welding head to vibrate at high frequencies. When the welding head contacts the surfaces to be fixed, the high-frequency vibrations are transmitted to the materials at the joint, causing intense friction between material molecules and generating heat. Under appropriate pressure and continuous vibration, the material locally melts at the joint, then rapidly cools and solidifies, thus connecting and fixing the two surfaces together. Ultrasonic fixing offers advantages such as high connection strength, high efficiency and speed, cleanliness and environmental friendliness, and good appearance quality. The entire ultrasonic fixing process does not require the use of adhesives or other chemical bonding agents, eliminating environmental pollution issues such as adhesive evaporation and the need for subsequent waiting time for adhesive drying, thus aligning with environmental protection principles and making the production process simpler and more efficient.

[0048] The limiting member 16 can be customized according to the specific shape and size of the fixing rod 21, as well as the space requirements between the first buffer wall 11 and the base plate 10. This makes the fit between the hollow square space formed by the limiting member 16 and the fixing rod 21 and the wall more tight, reducing the swaying and displacement of the fixing rod 21 within the hollow square space.

[0049] It should be noted that anti-slip textures or protrusions, such as serrated, dotted, or striped protrusions, are provided on the surface of the limiting member 16. When the fixing rod 21 contacts the limiting member 16, these anti-slip structures can increase friction, further restricting the positional movement of the fixing rod 21 and improving the limiting effect; or elastic pads, such as rubber, silicone, or elastic plastic, can be connected to the surface of the limiting member 16. When the fixing rod 21 is subjected to external force and undergoes slight displacement, the elastic limiting member 16 can undergo a certain degree of elastic deformation, absorbing and buffering part of the external force, while always maintaining the limiting effect on the fixing rod 21, preventing the fixing rod 21 from dislodging from the limiting space due to excessive displacement.

[0050] It's important to note that, firstly, polypropylene hollow sheets possess a certain degree of flexibility and elasticity. Their molecular chains can deform under vibration or impact, absorbing and dispersing some energy. Simultaneously, the hollow structure of the sheet acts as a buffer and insulator, reducing the propagation of vibration waves within the sheet and improving shock absorption performance. Secondly, the lightweight nature of polypropylene hollow sheet tops reduces transportation costs during packaging and transport, while also facilitating handling and operation. Furthermore, the elasticity and toughness of the hollow sheet material minimize the risk of injury to operators during disassembly and prevent damage to other items compared to some hard materials. Finally, in the high-temperature and high-humidity environment of sea transport, unlike paper packaging, it does not absorb moisture, preventing structural damage and compromising of the packaging's support performance and integrity.

[0051] In one alternative embodiment, refer to Figures 1-4 Protective components 17 are fixed at the connection between the third buffer wall 13 and the fourth buffer wall 14, and at the connection between the second buffer wall 12 and the third buffer wall 13. The protective components 17 are used to restrict the position movement of the fixed rod 21.

[0052] Understandably, the protective component 17 effectively resists various external collisions and impacts, protecting the connection between the third and fourth buffer walls 13 and 14 on the outer side of the top liner, as well as the connection between the second and third buffer walls 12 and 13. Furthermore, the two ends of the fixing rod 21 abut against the inner sides of the second and fourth buffer walls 12 and 14, respectively. When the top liner collides or rubs against other objects during transportation, use, or storage, the fixing rod 21 not only provides support, preventing excessive pressure on the clamping equipment during operation, thus avoiding deformation and breakage of the top liner and damage to electrical components, but also effectively resists various external collisions and impacts. The presence of the fixing rod 21 and the protective component 17 prevents the fixing rod 21 from being punctured by the second and fourth buffer walls 14, thus preventing the fixing rod 21 from moving out of the top liner. The fixing rod 21 and protective component 17 further enhance the connection stability between the various components of the roof lining. The auxiliary connector 22 constrains the frame structure of the roof lining, providing sufficient bending strength when the roof lining is subjected to drop impacts, effectively reducing the inward transmission of shock waves, and preventing the frame structure of the roof lining from collapsing due to deformation of the wall under stress. Together, the fixing rod 21, protective component 17, and connector 22 construct an indestructible protective system, preventing the frame structure of the roof lining from collapsing and effectively resisting various external collisions and impacts, thereby protecting home appliances from direct damage from external impact forces.

[0053] It should be noted that the protective component 17 can be a triangular protective strip, which can be fixed in various ways at the right angle between the third buffer wall 13 and the fourth buffer wall 14, and at the right angle between the second buffer wall 12 and the third buffer wall 13. Common fixing methods include adhesive, clips 118, screws, or rivets. Different fixing methods can be selected according to the actual appliance being packaged. Adhesive is suitable for occasions where the fixing strength requirement is not high. By applying glue or double-sided tape to the contact surface between the protective strip and the top liner, the protective strip can be firmly attached to the top liner. Clip fixing utilizes the clip structure designed on the protective strip and the top liner to snap the protective strip into the clip groove 119 of the top liner. Screw or rivet fixing is suitable for situations where high fixing strength is required. This is done by drilling holes in the protective strip and top liner, and then tightening them with screws or rivets. Specifically, after drilling holes in the protective part 17 with an electric drill, a rivet is used to pass rivets through one protective part 17 and fix it to the third buffer wall 13 and the fourth buffer wall 14. A rivet is also used to pass rivets through another protective part 17 and fix it to the second buffer wall 12 and the third buffer wall 13.

[0054] In one alternative embodiment, refer to Figures 1-6The first buffer wall 11 includes a first panel a101, a first panel b102, a first panel c103, a first panel d104, and a first panel e105 connected in sequence. The other end of the first panel a101 is connected to the base plate 10. The multiple panels of the first buffer wall 11 are folded so that the first panel a101 fixes the first panel b102 and the base plate 10 at intervals. The first panel c103 and the first panel d104 are connected between the first panel b102 and the base plate 10. The first panel e105 is attached to the base plate 10. The hollow space formed by the first panel a101, the first panel d104, the two limiting members 16, and the base plate 10 is used to place the fixing rod 21. The first buffer wall 11 is formed by folding and bending the base plate 10, the first panel a101, the first panel b102, the first panel c103, the first panel d104, and the first panel e105.

[0055] The second buffer wall 12 includes a second panel a106, a second panel b107, a second panel c108, and a second panel d109 connected in sequence. The other end of the second panel a106 is connected to the base plate 10. The multiple panels of the formed second buffer wall 12 are folded so that the second panel a106 and the second panel c108 are fixed to the base plate 10 at intervals. The second panel b107 is connected between the second panel a106 and the second panel c108. The second panel d109 connects the second panel c108 and fits against the base plate 10, increasing the connection stability between the second buffer wall 12 and the base plate 10. The second buffer wall 12 is formed by folding and bending the base plate 10, the second panel a106, the second panel b107, the second panel c108, and the second panel d109.

[0056] The third buffer wall 13 includes a third panel a110, a third panel b111, a third panel c112, and a third panel d113 connected in sequence. The other end of the third panel a110 is connected to the base plate 10. The multiple panels of the formed third buffer wall 13 are folded so that the third panel a110 and the third panel c112 are fixed to the base plate 10 at intervals. The third panel b111 is connected between the third panel a110 and the third panel c112. The third panel d113 is connected to the third panel c112 and fits against the base plate 10, increasing the connection stability between the third buffer wall 13 and the base plate 10. The third buffer wall 13 is formed by folding and bending the base plate 10, the third panel a110, the third panel b111, the third panel c112, and the third panel d113.

[0057] The fourth buffer wall 14 includes a fourth panel a114, a fourth panel b115, a fourth panel c116, and a fourth panel d117 connected in sequence. The other end of the fourth panel a114 is connected to the base plate 10. The multiple panels of the formed fourth buffer wall 14 are folded so that the fourth panel a114 and the fourth panel c116 are fixed to the base plate 10 at intervals. The fourth panel b115 is connected between the fourth panel a114 and the fourth panel c116. The fourth panel d117 is connected to the fourth panel c116 and fits against the base plate 10, increasing the connection stability between the fourth buffer wall 14 and the base plate 10. The third panel d113 is detachably connected to the second panel d109 and the fourth panel d117. The fourth buffer wall 14 is formed by folding and bending the base plate 10, the fourth panel a114, the fourth panel b115, the fourth panel c116, and the fourth panel d117.

[0058] Connector 22 connects two adjacent buffer walls to prevent them from scattering upon impact. Connector 22, used in conjunction with protective component 17, can more effectively resist various external collisions and impacts, improving impact resistance.

[0059] Understandably, before assembly, the base plate 10, the first buffer wall 11, the second buffer wall 12, the third buffer wall 13, and the fourth buffer wall 14 exist in the form of flat panels, occupying little space and facilitating large-scale storage and transportation. During transportation, a large number of flat hollow panels can be stacked, significantly improving transportation efficiency and reducing transportation costs compared to pre-assembled three-dimensional structures. The first buffer wall 11, the second buffer wall 12, the third buffer wall 13, and the fourth buffer wall 14 are folded to form specific shapes and structures. When subjected to external impact, the folded structure can absorb and disperse energy through its own deformation, providing cushioning in different directions, resulting in a better cushioning effect compared to simple flat structures.

[0060] To prevent the buffer wall from scattering upon impact, the third panel d113 is detachably connected to the second panel c108 and the fourth panel c116. This detachable connection can be designed as a matching snap-fit ​​structure for easy installation and disassembly. Specifically, the third panel d113 is equipped with a buckle 118, and the second panel c108 and the fourth panel c116 are fixedly equipped with slots 119. When the buckle 118 is engaged within the slot 119, the connection between the panels is achieved, improving the tightness of the connection. The buffer element 18 connected to the base plate 10 can precisely cover the second panel d109, the third panel d113, and the fourth panel d117, not only providing a buffering effect but also abutting against the snap-fit ​​structure between the panels to prevent displacement and thus prevent the snap-fit ​​connection between the panels from loosening and falling off.

[0061] Understandably, connector 22 improves the stability of the roof lining frame structure connection, constrains the roof lining frame structure, and provides sufficient bending strength when the roof lining is subjected to drop impact, effectively reducing the inward transmission of shock waves and preventing the roof lining frame structure from collapsing, thereby protecting the home appliances from direct damage from external impact forces. The shape and size of connector 22 are set according to actual needs. For example, connector 22 between adjacent buffer walls acts as a connecting wing. Adjacent buffer walls are tightly connected by connector 22 to form a stable frame structure, which can better withstand external forces, providing a basic support frame for the entire roof lining, making the impact force more evenly distributed throughout the structure, avoiding excessive local stress, and ensuring that the roof lining will not easily deform or collapse when subjected to pressure and impact, thus improving the overall stability and reliability of the roof lining. Connector 22 between the buffer wall and the base plate 10 can improve the connection stability between the buffer wall and the base plate 10, ensure the stability of the frame structure, and prevent the buffer wall from tilting or leaning relative to the base plate 10.

[0062] It should be noted that in practical applications, the size, shape, and folding method of each panel of the first buffer wall 11, the second buffer wall 12, the third buffer wall 13, and the fourth buffer wall 14 can be flexibly adjusted according to the shape, size, and cushioning requirements of different home appliances, thus achieving customized production. For different home appliances, simply changing the folding angle of the buffer wall or adding certain auxiliary structures can make the top liner better fit the product and provide more precise cushioning protection.

[0063] To enhance the cushioning effect, in one optional embodiment, refer to Figures 1-6 Buffer elements 18 are provided on the base plate 10 and inside the second buffer wall 12, the third buffer wall 13, and the fourth buffer wall 14. The buffer elements 18 are made of honeycomb cardboard or air venting panels. Specifically, the buffer element 18 is connected to the third panel a110, the second panel a106, and the fourth panel a114. When folded, the buffer elements can be placed inside the second buffer wall 12, the third buffer wall 13, and the fourth buffer wall 14. The buffer element 18 is connected to the third panel d113 and the fourth panel d117 located on the base plate 10.

[0064] Understandably, to enhance the cushioning effect of the top liner, honeycomb cardboard or air vents are placed inside the base plate 10 or hollow wall. The air vents are made of PE+PA (nylon) composite material and inflated. The internal structure of the air vents can be customized according to actual needs. Specifically, buffer elements 18 are connected to the second panel a106, the third panel a110, and the fourth panel a114. Multiple buffer elements 18 are then folded and bent to place within the second buffer wall 12, the third buffer wall 13, and the fourth buffer wall 14, respectively. Another buffer element 18 is placed above the base plate 10 and the third panel d113 and the fourth panel d117. By constructing a multi-layered structure, the top liner absorbs the impact force from the outer sides and back when subjected to sloping impacts and clamping forces, preventing the impact or clamping forces from directly acting on the appliance body and thus avoiding damage to the appliance.

[0065] It should be noted that the size of the buffer component is cut according to actual needs. For example, the buffer component 18 placed above the base plate 10 and the third panel d113 and the fourth panel d117 is smaller than the bottom area, so that it can be placed inside the top liner and leave room for the fixing rod 21.

[0066] Manufacturing and assembly method of the top liner: The molded sheet material is folded and bent to form the frame structure of the top liner. The frame structure of the top liner includes a base plate 10 and hollow walls fixed to the side of the base plate 10. The hollow walls include a first buffer wall 11, a second buffer wall 12, a third buffer wall 13, and a fourth buffer wall 14. Adjacent buffer walls are connected by connectors 22. An angle 19 is provided at the angle 19 portion of the top liner; slots 20 are opened in the formed second buffer wall 12 and fourth buffer wall 14; rectangular grooves 15 are provided at intervals at the connection between the first buffer wall 11 and the base plate 10, and limiting members 16 are fixed in the rectangular grooves 15. A fixing rod 21 is placed in the hollow square space formed by the first buffer wall 11, the base plate 10, and the limiting members 16.

[0067] To improve connection stability and prevent the fixing rod 21 from being punctured by the clamping force of the second buffer wall 12 and the fourth buffer wall 14, protective members 17 can also be fixed at the connection between the third buffer wall 13 and the fourth buffer wall 14, and at the connection between the second buffer wall 12 and the third buffer wall 13. To improve buffering performance, buffer members 18 can also be installed inside the second buffer wall 12, the third buffer wall 13 and the fourth buffer wall 14, and on the base plate 10.

[0068] How to use the top liner: Align the concave side of the liner with the top of the appliance, and insert the top of each corner liner into the corresponding slot 119 on the top to fix it.

[0069] The appliance cushioning top liner of this utility model has the following advantages:

[0070] Polypropylene hollow board is used as the main material for processing and manufacturing; it can be reused after being made; it is a single material and easy to recycle; the structure of polypropylene hollow board is used to make electrical appliance top linings to replace EPS and corrugated cardboard for the protection of electrical products, which has the effects of support and cushioning, and also meets the requirements of environmental protection and high temperature and high humidity.

[0071] The top liner is fixed without the use of other accessories, adhesive materials, etc., and without adding extra boards, thus saving on board material usage;

[0072] It has a high degree of structural adaptability and can be adjusted according to different sizes.

[0073] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A cushioning top liner for household appliances, characterized in that, The system includes a base plate and hollow walls formed by folding around the periphery of the base plate. The walls include a first buffer wall, a second buffer wall, a third buffer wall, and a fourth buffer wall, with connectors linking adjacent buffer walls. Buffer components are provided on the base plate and within the second, third, and fourth buffer walls. A fixing rod is detachably connected to the space formed between the first buffer wall and the base plate; A rectangular groove is provided at intervals at the connection between the first buffer wall and the base plate. A limiting member is provided in the rectangular groove. The limiting member connects the first buffer wall and the base plate to form a hollow square space to restrict the positional movement of the fixing rod.

2. The appliance cushioning top liner according to claim 1, characterized in that, The first buffer wall includes a first panel a, a first panel b, a first panel c, a first panel d, and a first panel e. The first panel a is fixed to the first panel b and the base plate at intervals. The first panel b and the base plate are connected by the first panel c and the first panel d. The first panel e is connected to the base plate.

3. The appliance cushioning top liner according to claim 1, characterized in that, The second buffer wall includes a second panel a, a second panel b, a second panel c, and a second panel d. The second panel a and the second panel c are fixed at intervals on the base plate. The second panel b is connected between the second panel a and the second panel c. The second panel d connects the second panel c to the base plate.

4. The appliance cushioning top liner according to claim 3, characterized in that, The third buffer wall includes a third panel a, a third panel b, a third panel c, and a third panel d. The third panel a and the third panel c are fixed at intervals on the base plate. The third panel b is connected between the third panel a and the third panel c. The third panel d connects the third panel c to the base plate.

5. The appliance cushioning top liner according to claim 4, characterized in that, The fourth buffer wall includes a fourth panel a, a fourth panel b, a fourth panel c, and a fourth panel d. The fourth panel a and the fourth panel c are fixed to the base plate at intervals. The fourth panel b is connected between the fourth panel a and the fourth panel c. The fourth panel d connects the fourth panel c to the base plate. The third panel d is detachably connected to the second panel d and the fourth panel d.

6. The appliance cushioning top liner according to claim 1, characterized in that, Protective components are fixed at the connection between the second buffer wall and the third buffer wall, and at the connection between the third buffer wall and the fourth buffer wall.

7. The appliance cushioning top liner according to claim 1, characterized in that, The wall has slots.

8. The appliance cushioning top liner according to claim 1, characterized in that, The four corners of the top liner are beveled.

9. The appliance cushioning top liner according to claim 1, characterized in that, The wall is connected by ultrasonic fixation.

10. The appliance cushioning top liner according to claim 1, characterized in that, The cushioning element is made of honeycomb cardboard or air vents.

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