Force transmission structure, packaging assembly, electrical assembly, filter cover and electrical appliance

Abstract

The force transmission structure comprises a coupling piece, two bodies and two mass blocks, the two mass blocks are respectively protruded on the two bodies, and the coupling piece connects the two bodies.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese patent application filed on August 17, 2022, application number 2022109919124 entitled "Force Transmission Structure, Packaging Assembly, Electrical Assembly, Filter Cover and Electrical Appliance", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application belongs to the field of electrical equipment, specifically relating to a force transmission structure, packaging assembly, electrical assembly, filter screen, and electrical equipment. Background Technology

[0004] Electrical equipment is typically subjected to impacts and vibrations during handling and transportation. To prevent damage, packaging structures are used to enclose the equipment, reducing the impact and vibration loads during transport. Packaging components mostly consist of corrugated cardboard boxes and foam structures. Foam is placed inside the corrugated cardboard box, covering the outer perimeter of the electrical equipment to provide protection. However, these packaging structures also withstand impacts and vibrations while protecting the equipment. Accumulated impact forces can easily damage the packaging structure, rendering it ineffective in protecting the equipment. Summary of the Invention

[0005] This application aims to at least partially solve the technical problem of high cost. To this end, this application provides a force transmission structure, packaging assembly, electrical assembly, filter screen, and electrical device.

[0006] The first aspect of this application provides a force transmission structure, comprising:

[0007] Two entities;

[0008] Two mass blocks, each protruding from one of the two bodies;

[0009] A coupling element connects the two bodies.

[0010] By placing mass blocks on the main body, the elastic waves can be modulated. The two main bodies are connected by two couplings, and the two mass blocks are respectively protruded on the two main bodies. The main bodies are connected by couplings, so that the two main bodies are spaced apart. This can reduce the amount of material used while maintaining the same protective capability. It can also minimize damage to electrical equipment when it is subjected to impact and vibration during handling or transportation, thereby improving the protective capability.

[0011] In an optional embodiment of this application, the coupling member includes a plurality of coupling posts, each of the coupling posts being connected to two of the bodies respectively, and each of the coupling posts being inclined.

[0012] In an optional embodiment of this application, the plurality of coupling pillars are all inclined about the same clockwise direction.

[0013] In an optional embodiment of this application, the projection of the plurality of coupling pillars onto any one of the bodies is a polygon.

[0014] In an optional embodiment of this application, the coupling post is cylindrical, the diameter of the coupling post is 0.5mm to 1.5mm, and the spacing between any two non-adjacent coupling posts is 4mm to 8mm.

[0015] In an optional embodiment of this application, the mass block has a connecting surface, the body has a mounting surface, the connecting surface is connected to the mounting surface, and the area of ​​the connecting surface is greater than or equal to one-third of the area of ​​the mounting surface.

[0016] In an optional embodiment of this application, the interval between the two bodies is 2mm-5mm, the thickness of the bodies is 0.5mm-2mm, and the thickness of the mass block is 2mm-6mm.

[0017] In an optional embodiment of this application, the thickness of the mass block is greater than or equal to the thickness of the body.

[0018] In an optional embodiment of this application, the body is rectangular with a side length of 8mm-12mm, and the mass block is rectangular with a side length of 5mm-10mm.

[0019] In an optional embodiment of this application, the coupling member and the mass block are respectively disposed on both sides of the body, and the two mass blocks are disposed opposite to each other.

[0020] A second aspect of this application provides a packaging assembly including a plurality of protective members, adjacent protective members being connected, the protective members covering the outer surface of an article to be packaged, and at least one of the protective members being provided with the force transmission structure.

[0021] The beneficial effects of the packaging components provided in the second aspect are the same as those of the force transmission structure provided in the first aspect, and will not be repeated here.

[0022] In an optional embodiment of this application, the coupling members of the force transmission structures of two adjacent protective members are tilted in different clockwise directions.

[0023] In an optional embodiment of this application, the protective component is provided with a plurality of force transmission structures, and the plurality of force transmission structures are arranged in a matrix.

[0024] In an optional embodiment of this application, the packaging assembly further includes a support body that covers the outer surface of the packaging assembly.

[0025] A third aspect of this application provides an electrical assembly, including an electrical device and the packaging assembly, wherein a plurality of the protective elements cover the outer surface of the electrical device.

[0026] The beneficial effects of the electrical components provided in the third aspect are the same as those of the packaging components provided in the second aspect, and will not be repeated here.

[0027] A fourth aspect of this application is a filter screen, said filter screen being provided with the force transmission structure described in the third aspect.

[0028] The beneficial effects of the filter screen provided in the fourth aspect are the same as those of the force transmission structure provided in the first aspect, and will not be repeated here.

[0029] The fifth aspect of this application provides an electrical device including the aforementioned filter screen.

[0030] The beneficial effects of the electrical equipment provided in the fifth aspect are the same as those of the filter screen provided in the fourth aspect, and will not be repeated here. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 A schematic diagram of a packaging structure in the related art is shown.

[0033] Figure 2 A first-view structural schematic diagram of the force transmission structure provided in the embodiments of this application is shown.

[0034] Figure 3 A second-view structural schematic diagram of the force transmission structure provided in the embodiments of this application is shown.

[0035] Figure 4 A schematic diagram of the mass block and body provided in the embodiments of this application is shown.

[0036] Figure 5 It shows Figure 4 A schematic diagram of the bulk dispersion of the structure.

[0037] Figure 6 It shows Figure 2 and Figure 3 A schematic diagram of volume dispersion in a force transmission structure.

[0038] Figure 7 It shows Figure 4 A schematic diagram of the experimental results for the elastic edge states of the structure.

[0039] Figure 8 It shows Figure 2 and Figure 3 A schematic diagram of the experimental results of the elastic edge state of the force transmission structure.

[0040] Figure 9 It shows Figure 2 and Figure 3 A schematic diagram of the helical edge state of the force transmission structure at different times.

[0041] Figure 10 It shows Figure 2 and Figure 3 A schematic diagram of the helical edge state of the force transmission structure at different times.

[0042] Figure 11 A schematic diagram of a defective sample is shown.

[0043] Figure 12 A schematic diagram of the transmission curve is shown.

[0044] Figure 13 A schematic diagram of the packaging component according to an embodiment of this application is shown.

[0045] Figure 14 It shows Figure 13 A schematic diagram of the structure of the first protective component.

[0046] Figure 15 It shows Figure 13 A schematic diagram of the structure of the second protective component.

[0047] Figure 16 A schematic diagram of a packaging assembly with two different directions of rotation is shown.

[0048] Figure 17 It shows Figure 16 The curves showing the variation of energy from 2 to 4 with altitude.

[0049] Figure 18 It shows Figure 16 The propagation path of elastic waves.

[0050] Figure 19 This is a structural diagram of a packaging assembly with a support structure.

[0051] Reference numerals: 100'-foam, 10-force transmission structure, 200-body, 300-mass block, 400-coupling element, 401-coupling column, 500-packaging assembly, 501-protective element, 5011-first protective element, 5012-second protective element, 5013-edge, 5014-weight reduction part, 600-support body, 601-opening, 700-product to be protected, 20-electrical assembly. Detailed Implementation

[0052] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0053] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indication will also change accordingly. In this application, unless otherwise explicitly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, "fixed" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction relationship between two components, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances. In addition, the descriptions involving "first," "second," etc., in this application are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0054] Electrical equipment is typically subjected to impacts and vibrations during handling and transportation. To prevent damage, packaging structures are used to enclose the equipment, reducing the impact and vibration loads during transport. Packaging components mostly consist of corrugated cardboard boxes and foam structures. Foam is placed inside the corrugated cardboard box to cover the outer perimeter of the equipment, providing protection. However, these packaging structures also withstand impacts and vibrations while protecting the equipment. Accumulated impact forces can easily damage the packaging structure, rendering it ineffective in protecting the equipment.

[0055] Ovens and other electrical appliances are subjected to impacts, vibrations, and other loads during handling and transportation. The packaging must protect the ovens and other electrical appliances from damage to their appearance and function.

[0056] Figure 1 This is a structural diagram of a packaging component 500 developed by the applicant. (Combined with...) Figure 1 The packaging component 500 includes two foams 100' disposed on opposite sides of the product 700 to be protected. The two foams 100' are disposed separately and do not form a whole, lacking stability. Furthermore, the two separate foams 100' provide a limited buffer protection area for the product and cannot form comprehensive protection. In addition, the fixation between the two separate foams 100' and the product 700 to be protected depends on the outer corrugated or cardboard box, which is large in size and expensive.

[0057] This application is described below with reference to the accompanying drawings and specific embodiments:

[0058] Please see Figure 2 and Figure 3 This application provides a force transmission structure 10, which can be applied to packaging components 500, as well as to filter screens or electrical equipment with filter screens. The force transmission structure 10 provided in this embodiment minimizes damage when electrical equipment is subjected to impact and vibration during handling or transportation, improving protection capabilities while reducing costs.

[0059] In this application, the force transmission structure 10 includes: two bodies 200, two mass blocks 300 and a coupling member 400, the two mass blocks 300 being respectively protruded from the two bodies 200; the coupling member 400 connecting the two bodies 200.

[0060] By placing a mass block 300 on the main body 200, the elastic wave can be modulated. The two main bodies 200 are connected by two coupling members 400, and the two mass blocks 300 are respectively protruding on the two main bodies 200. The main bodies 200 are connected by coupling members 400, so that the two main bodies 200 are spaced apart. When subjected to loads such as impact and vibration, the gap between the two main bodies 200 provides space for the transmission of the elastic wave. When the electrical equipment is subjected to impact and vibration during handling or transportation, the elastic wave can be transmitted on the force transmission structure 10, and it is not damaged as much as possible, thus reducing the damage to the force transmission structure 10.

[0061] Meanwhile, because the mass block 300 protrudes from the body 200, it can reinforce the body 200 when elastic waves are transmitted through it, thus reducing damage to the body 200 during the transmission of elastic waves. Since the mass block 300 protrudes from the body 200, compared to directly increasing the thickness of the body 200, less material is needed, reducing costs. In other words, the force transmission structure provided by this application improves protective capabilities while reducing costs.

[0062] Among them, the body 200, the mass block 300 and the coupling element 400 can be made of elastic metamaterials, such as foam 100'.

[0063] In some embodiments, the coupling member 400 includes a plurality of coupling posts 401, each coupling post 401 being connected to two bodies 200 respectively, and each coupling post 401 being inclined.

[0064] In this configuration, two mass blocks 300 are positioned opposite each other. Specifically, for the same body 200, the mass blocks 300 and coupling pillars 401 are positioned on opposite sides of the body 200. For the overall force transmission structure 10, the two mass blocks 300 are positioned on the outer side, and the coupling pillars 401 are positioned on the inner side. The mass blocks 300 can be positioned at the center of the body 200. The mass blocks 300 on the opposite sides of the two bodies 200 can be symmetrically positioned with respect to the center plane between the two bodies 200. The coupling element 400 is also positioned corresponding to the mass blocks 300, and is positioned between the corresponding two mass blocks 300.

[0065] Of course, the mass blocks 300 on the opposite sides of the two main bodies 200 can also be arranged in a staggered manner, which is not restricted here.

[0066] In some embodiments, multiple coupling pillars 401 are all tilted around the same clockwise direction.

[0067] The force transmission structure 10 is a topological structure, and the tilting direction of the multiple coupling pillars 401 is also the topological phase of the topological structure. The multiple coupling pillars 401 are all tilted around the same clockwise direction, and can be considered to be arranged in a roughly spiral shape.

[0068] In some implementations, the projections of the plurality of coupling pillars 401 onto any one of the bodies 200 are polygons.

[0069] The main body 200 is rectangular, and two main bodies 200 are stacked. There can be four coupling pillars 401. If there are four coupling pillars 401, the four coupling pillars 401 are respectively set in the direction of the four sides of the main body 200 and tilted in the same clockwise direction, so that the projection of the four coupling pillars 401 on any one of the main bodies 200 is a quadrilateral.

[0070] In other words, for the same coupling column 401, both ends of the coupling column 401 are connected to two bodies 200 respectively. One end of the coupling column 401 is connected to one of the bodies 200, and the other end is connected to the other body 200. The projection of the connection point of one end of the coupling column 401 with one of the bodies 200 onto the other body 200 coincides with the connection point of the other coupling member 400 with the other body 200. This method makes the projection of the coupling column 401 onto each body 200 a closed shape, which can improve the stability of the entire force transmission structure 10.

[0071] In some embodiments, the coupling post 401 is cylindrical, with a diameter of 0.5mm to 1.5mm, and the spacing between any two non-adjacent coupling posts 401 is 4mm to 8mm.

[0072] The projection of the coupling post 401 onto any one of the bodies 200 is a rectangle. If there are four coupling posts 401, then the projection of all four coupling posts 401 onto any one of the bodies 200 is a rectangle. The spacing between two non-adjacent coupling posts 401 is the same as the spacing between two relatively positioned coupling posts 401. The spacing between any two non-adjacent coupling posts 401 is 4mm to 8mm, which can increase the bandwidth of the elastic wave transmission while connecting the two bodies 200.

[0073] In some embodiments, the mass block 300 has a connecting surface, the body 200 has a mounting surface, the connecting surface is connected to the mounting surface, and the area of ​​the connecting surface is greater than or equal to one-third of the area of ​​the mounting surface.

[0074] The main body 200 is rectangular, and the mass block 300 is also rectangular. The mass block 300 protrudes from the main body 200, and the area of ​​the connecting surface is greater than or equal to one-third of the area of ​​the mounting surface. This ensures the area of ​​the mass block 300 on the main body 200 and guarantees the strength of the entire force transmission structure 10.

[0075] In this configuration, mass block 300 and body 200 are misaligned, meaning that one vertex of mass block 300 corresponds to one edge of mass block 300.

[0076] In some embodiments, the thickness of the mass block 300 is greater than or equal to the thickness of the body 200. The mass block 300 protrudes from the body 200, and the projection of the mass block 300 onto the body 200 can fall completely on the body 200. The thickness of the mass block 300 being greater than the thickness of the body 200 allows the mass block 300 to reinforce the body 200, enabling elastic waves to be transmitted through the force transmission structure 10 and reducing damage to the force transmission structure 10.

[0077] In this embodiment, the distance between the two bodies 200 is 2mm-5mm, the thickness of the body 200 is 0.5mm-2mm, and the thickness of the mass block 300 is 2mm-6mm.

[0078] Since the coupling column 401 is inclined between the two bodies 200, the actual length of the coupling column 401 should be greater than the interval between the two bodies 200. When transmitting elastic waves, the distance between the two bodies 200 can reserve space for the movement of the two bodies 200 under the influence of elastic waves, so that the force transmission structure 10 can transmit elastic waves smoothly.

[0079] In some embodiments, the body 200 is rectangular with a side length of 8mm-12mm, and the mass block 300 is rectangular with a side length of 5mm-10mm.

[0080] Figure 4 The force transmission structure 10 shown consists of a mass block 300 mounted on the body 200 to modulate the elastic wave, forming a belt structure. Protected by point group symmetry, a doubly degenerate point exists at point M (a vertex in a square lattice). This degeneracy point is a typical quadratic Dirac point (in a band structure, at a high-symmetry point on its Brillouin zone boundary, there exist upper and lower conical structures with linear dispersion relations; the vertices of these conical structures are called Dirac points, characterized by quadratic dispersion with opposite curvatures, and a ring of [missing information - likely a typo, should be 'Dirrac'] around this point). The Berry phase, where the Berry phase refers to the global phase evolution resulting from a complex vector moving along a path in a parameter space back to its starting point. Achieving a topologically nontrivial bandgap in a single elastic metamaterial requires breaking parity or time-reversal symmetry to open the second-order Dirac degeneracy. For a single-layer structure (with only a bulk 200 and a mass block 300), it is difficult to open the M-point bandgap by breaking parity symmetry, while breaking time-reversal symmetry requires active devices, which poses a challenge to sample fabrication.

[0081] Combination Figure 2 and Figure 3 , Figure 2 and Figure 3 The force transmission structure 10 shown introduces interlayer coupling (coupler 400) between two identical monolayer elastic metamaterials. Without coupling, the bilayer elastic metamaterial exhibits quadratic degeneracy at point M. To open the bandgap at this point, chiral interlayer coupling is achieved by introducing four inclined coupling pillars 401, thereby breaking parity symmetry. The topological properties are thoroughly described by deriving the effective Hamiltonian around point M from perturbation theory. Considering all crystal symmetries, the linear part of the perturbation Hamiltonian disappears, and the explicit form of the quadratic part is strictly constrained. The perturbation Hamiltonian is... Among them, the Pauli matrix and This represents the pseudospin and the basis vectors constituting the quadratic degeneracy in a monolayer elastic metamaterial. This represents the dimensionless wave vector deviating from point M. and These represent intra-layer and inter-layer coupling, respectively.

[0082] The perturbation Hamiltonian is consistent with the symmetry of the system and can describe the band structure of the bilayer elastic metamaterial. When This Hamiltonian describes the case of a single layer. By fitting the dispersion curve of the single-layer elastic metamaterial around point M, it can be determined as follows: , ,and The fitted dispersion curves are shown below. Figure 5 as well as Figure 6 The two solid lines in the graph, shaped like parabolas, show a good agreement between the fitted curve and the calculated results. The last term in the formula represents the coupling between interlayer pseudospin and monolayer eigenstates, resulting in artificial spin-orbit coupling in the bilayer elastic metamaterial and the creation of a band gap at point M. The band gap width can be used to determine... It's confirmed. and The fitted curve, determined by the formula, matches very well with the dispersion curve of the bilayer elastic metamaterial (hollow circles). Here, the color in the dispersion represents the proportion of out-of-plane modes to the total displacement. It can be seen that near point M, in-plane and out-of-plane modes mix. However, near point Γ, in-plane modes dominate and are not randomly excited. This characteristic allows us to characterize topological properties by measuring out-of-plane modes in experiments, while in-plane modes far from point M are automatically masked.

[0083] Figure 5 as well as Figure 6 The geometric parameters of the simulated volume dispersion are as follows: the side length of the body 200 of the unit cell, the thickness of the body 200, the length and height of the mass block 300, the interlayer distance between the two bodies 200, the diameter of the coupling pillar 401, and the distance between the two coupling pillars 401 on the same side.

[0084] Elastic waves in bilayer elastic metamaterials exhibit vector characteristics; therefore, the topological properties of the structure cannot be characterized solely by out-of-plane modes, but must also include two in-plane modes. This full vector characteristic is essential for formulating the topological properties of the structure. This can be achieved through unitary transformations. The system's Hamiltonian becomes a block diagonal matrix. The block matrix here This represents the pseudospin-up / spin-down Hamiltonian. These two block matrices have the same bandgap and opposite Chern numbers. On the other hand, the non-Abelian Wilson loops of the unit cell structure can also be numerically calculated to characterize the non-trivial topological properties of bilayer elastic metamaterials.

[0085] Due to the nontrivial nature of the bulk state, topological edge states can be predicted to appear on either the free or fixed boundaries of the sample. Compared to the previous topological edge states existing at two interfaces, these edge states only require one material. The applicant fabricated two corresponding... Figure 2 as well as Figure 3 The samples were characterized by free and fixed boundaries, and each sample contained a unit cell. Piezoelectric plates were attached to the free or fixed boundaries of the samples to excite edge states. In the experiment, the applicant used a laser vibrometer perpendicular to the sample to measure the out-of-plane components. The excitation frequency for both samples was 26.75 kHz.

[0086] The experimental results of the elastic edge states of the two samples are as follows: Figure 7 as well as Figure 8 As shown, colors represent experimental results, and solid curves represent calculated results. For free boundary conditions, the experimental and calculated results show good agreement, indicating the existence of topological edge states at the boundaries. Simultaneously, it was also found that... The edge states at this point exhibit a very small bandgap due to the coupling between the up and down pseudospins. The bandgap of the edge states accounts for only 0.3% of the center frequency, making it experimentally indistinguishable. For fixed boundary conditions, we obtain a pair of gapless edge states, corresponding to... Figure 8 The two solid curves in the middle of the sample cause pseudospins to propagate upwards and downwards towards each other along the boundary. Since the source is placed on the left side of the sample, only the edge states with positive group velocities are excited, and the experimental and computational results show good agreement.

[0087] The pseudospin-momentum binding properties of helical edge states can be reflected by the profiles of the eigenmodes of free and fixed boundaries. For example... Figure 9 as well as Figure 10 As shown, at different times, the vortex of amplitude causes the block to rotate, and the direction of rotation is consistent with the propagation direction of the edge states. Specifically, the forward (backward) propagating edge states have a clockwise (counterclockwise) rotation. Therefore, the topological edge states are bound to the direction of the vortex. Furthermore, multiple point sources with different phases are used to selectively excite pseudospin-up or-down edge states.

[0088] A significant characteristic of topological edge states is that they can robustly propagate unidirectionally along the boundary even in the presence of defects (such as sharp corners). To this end, the applicant designed a sample with a rectangular defect, such as... Figure 11 As shown, the defect has four 90-degree turns. The source is placed at one end of a free boundary, which is 34 units long. A linearly modulated signal is used, with the frequency varying linearly from 23.5 kHz to 30.5 kHz. Figure 12 The applicant compared the transmission curves of the defect-included path and the straight path. The difference between these two transmission curves within the topological bandgap (grey area) was small, indicating that the edge states propagating along the rectangular defect have weak backscattering, with an excitation frequency of 26.75 kHz. The experimental and simulation results showed good agreement, demonstrating that the elastic wave can propagate smoothly around the rectangular defect.

[0089] Combination Figure 13 The present application also provides a packaging component 500, which includes a plurality of protective members 501, two adjacent protective members 501 are connected, the protective members 501 cover the outer surface of the item to be packaged, and at least one protective member 501 is provided with the force transmission structure 10 described above.

[0090] Multiple force transmission structures 10 can be provided on the protective component 501. The force transmission structure 10 can be provided on one protective component 501 or on multiple protective components 501. Two adjacent protective components 501 are connected to form a wrapping around at least part of the outer surface of the product 700 to be protected.

[0091] When the entire product is dropped, the energy generated by the contact between the corner of the combined protective components 501 and the ground can be propagated along the edge of the force transmission structure 10, thereby avoiding excessive accumulation at the corner of the protective components 501, reducing the risk of damage to the packaging assembly 500, and improving the protective capability of the protective components 501.

[0092] The plurality of protective components 501 include a second protective component 5012 and at least one first protective component 5011. The side of the first protective component 5011 is connected to the second protective component 5012. A force transmission structure 10 is provided on at least the first protective component 5011, or a force transmission structure 10 may be provided on both the first protective component 5011 and the second protective component 5012.

[0093] When only one first protective element 5011 exists, the first protective element 5011 preferably protects the front of the product 700 to be protected. The force transmission structure 10 can be provided only on one side of the first protective element 5011, or it can be provided on both sides of the first protective element 5011, or it can be provided over the entire area of ​​the first protective element 5011. Of course, there can also be multiple first protective elements 5011, and the design can be adapted according to the actual situation of the product to be packaged.

[0094] Figure 14 for Figure 13 A structural schematic diagram of the first protective component 5011. (Combined with...) Figure 13 as well as Figure 14 In this embodiment, the entire area of ​​the first protective member 5011 is provided with the aforementioned force transmission structure 10. The mass blocks 300 of the force transmission structure 10 on the first protective member 5011 can be arranged in multiple rows and columns at intervals. In this case, when the product falls, the energy generated by the contact between the corner of the protective member 501 and the ground can be transmitted along the side of the protective member 501 (including the vertical edge 5013 at the corner and the two horizontal edges 5013 connected to the edge 5013 at the corner), thereby avoiding excessive energy accumulation at the corner of the protective member 501 and preventing damage to the packaging assembly 500, so as to achieve the purpose of protecting the product.

[0095] Figure 15 for Figure 13 A structural schematic diagram of the second protective component 5012. (Combined with...) Figure 13 as well as Figure 15In this embodiment of the application, the second protective member 5012, which is connected to the side of the first protective member 5011, is also provided with the above-mentioned force transmission structure 10. Since the first protective member 5011 and the second protective member 5012 have an included angle, opposite valley topological phases can be formed on both sides of the side where the first protective member 5011 and the second protective member 5012 are connected (i.e., at the above-mentioned vertical edge 5013). This forms a boundary state with topological protection at the interface, thereby guiding the energy at the corner position to propagate along the edge 5013 (including the vertical edge 5013 at the corner and the two horizontal edges 5013 connected to the edge 5013 at the corner on the first protective member 5011 and the second protective member 5012), avoiding excessive energy accumulation at the corner position and preventing damage to the packaging structure.

[0096] The specific configuration of the force transmission structure 10 of the second protective component 5012 can be referenced from the configuration of the force transmission structure 10 on the first protective component 5011, and will not be elaborated here.

[0097] Combination Figure 13 , Figure 14 as well as Figure 15 The first protective member 5011 and the second protective member 5012 can be the body 200 of the force transmission structure 10, which only has a mass block 300 on the outside of the first protective member 5011 and the second protective member 5012. That is, the force transmission structure 10 on the first protective member 5011 and the second protective member 5012 in the embodiment of this application adopts Figure 2 The force transmission structure 10 shown can make the inner side of the first protective member 5011 as flat as possible so as to fit with the outer surface of the product to be protected 700.

[0098] Of course, in other embodiments, the force transmission structure 10 on the first protective member 5011 and the second protective member 5012 of this application may also be adopted. Figure 3 The force transmission structure 10 shown is not limited here.

[0099] Combination Figure 13 In this embodiment of the application, the side of the first protective member 5011 and the side of the second protective member 5012 are fitted together. Specifically, mortise and tenon, insertion and / or butt joint, etc. can be used, and no specific limitation is made here.

[0100] In some embodiments, other protective components 501 can also be connected by interlocking, that is, one protective component 501 interlocks with two adjacent protective components 501 and supports the two adjacent protective components 501, so that the protective body can form an integral protective structure. During transportation, if a protective component 501 is subjected to impact force, the impact force can be dispersed to other parts through the other protective components 501, thereby reducing the impact force on the product 700 to be protected. If a protective component 501 is broken by impact force, the other protective components 501 will support the broken part and prevent the broken part from shifting, thereby improving the comprehensive protection capability of the packaging assembly 500, which has great practical value.

[0101] The protective element 501 in this embodiment can be made of commercially available foam 100. Each protective element 501 can be fitted with the sides of two adjacent protective elements 501 on both sides. Since the sides of the protective elements 501 are fitted together, the protective elements 501 can be utilized to the maximum extent to form a protective layer that matches at least part of the outer surface of the product 700 to be protected, thereby saving costs.

[0102] Of course, in other embodiments, some adjacent protective elements 501 may not adopt an edge-to-edge fitting method, that is, the side of one protective element may be fitted into the middle of another protective element 501, and a matching protective layer may be constructed covering at least part of the outer surface of the product 700 to be protected. This solution will result in a waste of cost because there will be redundant and disadvantageous protective elements 501, but this solution will increase the distance between the external impact object and the product 700 to be protected, which is more conducive to the protection of the product 700.

[0103] In some embodiments, depending on the shape of the product 700 to be protected, the protective member 501 may cover part or all of the outer surface of the product 700 to be protected, depending on the specific shape of the product 700 to be protected. For example, if part of the outer surface of the product 700 to be protected (such as the back, top, or bottom) does not require special protection, the protective member 501 may not cover these outer surfaces that do not require special protection, thus saving costs while achieving protection; if the outer surface of the product 700 to be protected requires full protection, the protective member 501 must cover all of these outer surfaces that do not require special protection in order to effectively protect the product 700 to be protected.

[0104] The product 700 to be protected in this embodiment may be provided with a peripheral side surface. Correspondingly, a plurality of protective members 501 may form a protective cavity that matches the peripheral side surface and is used to accommodate the peripheral side surface. That is, the protective members 501 may only cover the peripheral side surface of the product 700 to form a protective layer that only protects the peripheral side surface of the product 700.

[0105] Of course, the product to be protected 700 may also be provided with a top connecting the top end of the peripheral side and a bottom connecting the bottom end of the peripheral side. Correspondingly, multiple protective components 501 can form a protective cavity that matches the outer surface of the product to be protected 700. That is, the protective components 501 can cover the entire outer surface of the product to be protected 700 to form a protective layer that completely protects the outer surface of the product to be protected 700.

[0106] Each or part of the protective component 501 in the embodiments of this application may be provided with a weight reduction part 5014. The weight reduction part 5014 may be groove-shaped or hole-shaped to further reduce the amount of protective component 501 and reduce the amount of packaging material.

[0107] When transporting the product 700 to be protected, each protective component 501 can be assembled onto the outer peripheral surface of the product to be protected first, and then the protective components 501 can be connected into a whole. In addition, the inner surface of each protective component 501 in this embodiment can match the shape of the part of the product 700 to be protected, so as to effectively protect the product 700. The outer surface of each protective component 501 preferably forms a relatively smooth surface, and an operating part for gripping can be provided on the outer surface of the protective component 501. The operating part can be hole-shaped or groove-shaped, which is not limited here.

[0108] In some embodiments, the coupling members 400 of the force transmission structures 10 of two adjacent protective members 501 are tilted in different clockwise directions. That is, the topologies of the force transmission structures 10 on two adjacent protective members 501 are different.

[0109] like Figure 16 As shown, combining force transmission structures 10 with two different topological phases to select the transmission path paves the way for exploring the design of devices such as distributors and switches. Viewed from top to bottom, the unit cell containing counterclockwise (clockwise) interlayer coupling is denoted as A (B). It can be predicted that four edge states will be generated at the AB interface, enabling the construction of complex networks to manipulate elastic waves. A topological device with four ports was designed by splicing A and B together. The source is placed at port 1, and the left and right sides of the sample are absorbing boundaries to reduce reflection. The width and height of the sample are adjustable. Figure 17As shown, we calculated the energy variation curves from port 2 to port 4 with altitude. We can observe that ports 3 and 4 exhibit fluctuating trends with altitude, which is due to the coupling between the two positive group velocity edge states at the AB interface. Furthermore, due to spin and momentum binding, there is essentially no energy inflow into port 2.

[0110] To experimentally verify the path selection phenomenon, we fabricated three samples with heights of [missing information]. , and We observed that when Almost all the elastic wave energy flowed into port 3. When Increase to Energy can be transferred to 3 and 4. Furthermore, when the altitude... Increase to Almost all the energy flowed into port 4. For example... Figure 18 As shown, the experimental field diagram and the simulated field diagram show good consistency, which also proves that adjusting the height of the sample can regulate the propagation of elastic waves.

[0111] Figure 18 Selective transmission of flexible edge-state multi-topology channels. ch, with heights of [values ​​to be filled in]. , and The displacement field was measured and simulated. A pentagram represents a point source, and arrows indicate the direction of edge state propagation. Finally, we integrated the topological valley structure with the packaging. Since the contact time between the corner and the ground is essentially fixed when the product falls, elastic waves of a specific frequency will be generated. For traditional packaging structures, energy tends to concentrate at the corner or be transferred into the packaging structure during a corner drop. Therefore, a thicker 100' foam is often required to protect the product from damage. The structure utilizes the aforementioned topological valley design for the 100' foam, where the two sides of the edge are composed of opposite valley topological phases, forming a topologically protected boundary state at the interface. This guides the energy at the corner along the edge, preventing excessive energy accumulation at the corner and thus preventing damage to the packaging structure.

[0112] Of course, in addition, the same topological phase force transmission structure 10 can be set on two adjacent protective components 501, in which case the elastic wave will be transmitted along the edge of the force transmission structure 10.

[0113] In some embodiments, the protective element 501 is provided with multiple force transmission structures 10, which are arranged in a matrix. The bodies 200 of the multiple force transmission structures 10 are spliced ​​together in a matrix manner to form the protective element 501. The force transmission structures 10 are made of elastic metamaterials such as foam 100'. Elastic metamaterials, as artificially designed structures, are widely used in non-destructive testing, wave guiding, information processing, and other methods that do not exist in nature to manipulate elastic waves. However, in traditional electromagnetic media, due to the presence of bending and defects, wave transmission is inevitably affected by backscattering. In recent years, with the discovery of topological insulators in condensed matter physics, people have conducted extensive research on topological elastic metamaterials for efficient transport of boundary modes.

[0114] Specifically, the body 200 is rectangular, with its long side joined to the long side of another body 200 and its wide side joined to the wide side of another body 200, so that the multiple force transmission structures 10 are arranged in a matrix.

[0115] In two-dimensional structures, there are two types of topological elastic metamaterials. The first type possesses chiral boundary states, typically achieved by breaking time-reversal symmetry using piezoelectric materials to simulate quantum anomalous Hall insulators. However, the introduction of active elements significantly increases the system's complexity. The second type, similar to quantum spin (valley) Hall insulators, possesses time-reversal symmetric helical interface states and has been realized in multi-scale elastic metamaterials. It is noteworthy, however, that the full-vector characteristic of the elastic wave equation has not been fully considered in these systems. Interface states are typically localized on domain walls between two different topological phases. Whether elastic metamaterials in continuous media can generate topological boundary states at single-phase boundaries remains an open question.

[0116] Under corner drop conditions, energy accumulation and stress concentration easily occur at the corner foam 100' of packaging component 500, leading to damage to the packaging structure and consequently, damage to the protected product, resulting in additional losses. Strength analysis of packaging component 500 reveals that this structural component possesses high strength both in its bulk and at its edges. In traditional packaging, impact energy propagates along the bulk, thus requiring sufficient thickness to absorb energy and protect the product.

[0117] In this embodiment, a force transmission structure 10 is provided on a portion of the foam 100' of the packaging component 500. An interface (i.e., edge 5013) is formed at the boundary of a single topological phase or by splicing two opposite topological phases. This allows the elastic waves generated during corner drops to propagate fully along the edge 5013, avoiding energy accumulation near the corner that could lead to structural damage or excessive elastic waves that could propagate into the foam 100' and cause product damage. Furthermore, an extremely thin packaging cushioning material design can be used, reducing the amount of packaging material used, shrinking the packaging size, increasing the container loading capacity, and reducing ocean freight costs.

[0118] In some embodiments, the packaging assembly 500 further includes a support 600 that covers the outer surface of the protective member 501. The support 600 may be a corrugated cardboard box, which, when packaged on the outer surface of the protective member 501, provides fixation and protection for the protective member 501.

[0119] During transportation, the support 600 located on the outside of the protective body can protect the protective body and reduce the impact force on it, thereby reducing the possibility of breakage. If a protective component 501 of the protective body breaks, the support 600 located on the outside of the protective body can also support the broken part of the protective body and prevent the broken part from shifting, so as to maximize the comprehensive protective capability of the packaging component 500 and have good practical value.

[0120] In some embodiments, the external support 600 may include corrugated or cardboard boxes, which wrap around the outer surface of the protective body to provide initial protection and provide space for the assembly of the integral protective component 501 to support the integral protective body and prevent damage to the protective component 501 caused by collision and breakage, so as to provide good protection for the protective product 700.

[0121] When transporting the product 700 to be protected, the protective body can be first assembled onto the outer peripheral surface of the product 700, and then the support 600 can be fitted onto the protective body. Furthermore, in this embodiment, the inner surface of each protective component 501 matches the shape of the portion of the product 700 it covers, and the outer surface of each protective component 501 contacts the inner side of the receiving cavity. When the product 700 is assembled within the packaging assembly 500, there can be no gaps between the support 600 and the protective body, and between the protective body and the product 700, thus providing stable protection for the product 700 and further improving its protective effect.

[0122] Combination Figure 19 In this embodiment, the receiving cavity may be provided with an opening 601 for receiving the protective body. That is, after the protective product 700 is assembled into the support body 600, the support body 600 with the protective product 700 assembled can enter the receiving cavity of the support body 600 through the opening 601, and then the opening 601 of the support body 600 can be closed.

[0123] In some embodiments, the opening area of ​​601 is no larger than the circumferential cross-sectional area of ​​the protective body, so that when the protective body is received in the aforementioned receiving cavity, the protective body can expand the receiving cavity, and the protective body fits tightly against the inner wall of the support 600. That is, when the protective body is received in the aforementioned receiving cavity, the negative gap between the protective body and the support 600 can further improve the integrity of the protective body and prevent, as far as possible, the phenomenon that the product 700 to be protected cannot be effectively protected due to the loosening of the protective body during transportation.

[0124] In this embodiment of the application, when the protective body is housed in the aforementioned receiving cavity, the gap between the protective body and the support 600 is not less than -2mm, that is, along the same direction perpendicular to the center line of the receiving cavity, the difference between the size of the protective body and the size of the receiving cavity is not greater than 4mm, so as to facilitate the assembly of the protective body in the receiving cavity of the support 600 and improve the firmness of the protective body in the receiving cavity of the support 600.

[0125] Since the packaging assembly 500 includes a support 600 that houses the aforementioned protective body, during transportation, the support 600 located on the outside of the protective body can protect the protective body and reduce the impact force on it, thereby reducing the possibility of breakage. If one of the protective components 501 of the protective body breaks, the support 600 located on the outside of the protective body can also support the broken part of the protective body and prevent the broken part from shifting, so as to maximize the comprehensive protective capability of the packaging assembly 500 and have good practical value.

[0126] The packaging component 500 in the related technology uses a large 100' thick foam, resulting in a large outer packaging size. Taking an oven as an example, the sea freight cost of a single oven in the related technology is as high as 355 yuan. By using the packaging component 500 shown in the embodiment of this application, the packing capacity can be increased from the original 216 units to 304 units, reducing the sea freight cost by 103 yuan per unit. This can significantly reduce production and transportation costs, and has good practical and economic value.

[0127] Under corner drop conditions, energy accumulation and stress concentration easily occur at the corner foam 100' of the packaging component 500, leading to damage to the packaging structure and consequently, damage to the protected product, resulting in additional losses. Strength analysis of the packaging component 500 shows that both the body 200 and the edges possess high strength. In related technologies, the impact energy of the packaging component 500 propagates along the body 200, thus requiring sufficient thickness to absorb energy and protect the product, thereby increasing the production cost of the packaging component 500.

[0128] The force transmission structure 10 is integrated with the packaging. Since the contact time between the corner and the ground is essentially fixed when the product falls, it will generate elastic waves of a specific frequency. In traditional packaging structures, energy tends to concentrate at the corner or be transferred into the packaging structure itself during a corner drop, thus often requiring a relatively thick foam 100' to protect the product from damage. Figure 13 This is a schematic diagram of the structure of the packaging component 500 according to an embodiment of this application, in conjunction with... Figure 13 , Figure 13 The packaging component 500 shown uses the foam 100' design of the force transmission structure 10 above. The two sides of the edge are composed of opposite valley topological phases, forming a topologically protected boundary state at the interface, thereby guiding the energy at the corner position to propagate along the edge, avoiding excessive energy accumulation at the corner position, and preventing damage to the structure of the packaging component 500.

[0129] This application also provides an electrical component 20, which includes an electrical device and the aforementioned packaging component 500, with a plurality of protective components 501 covering the outer surface of the electrical device.

[0130] Based on the above-mentioned packaging component 500, this application embodiment also provides an electrical component 20, which includes an electrical device and the above-mentioned packaging component 500, with the electrical device enclosed in the protective body of the packaging component 500.

[0131] The electrical component 20, incorporating the aforementioned packaging component 500, can, to a certain extent, prevent excessive energy accumulation at the corners of the protective structure, thus preventing damage to the packaging component 500 and achieving the purpose of product protection. It can also reduce the material usage of the corresponding protective component 501, improving the lightweight nature of the packaging component 500 and further reducing packaging costs, demonstrating excellent practicality and economy. The electrical equipment can be household appliances such as ovens, microwave ovens, and washing machines.

[0132] Furthermore, in related technologies, some home appliances (such as air conditioners) are equipped with filter screens to filter the fresh air introduced by the fan. However, air conditioners are mostly placed vertically, and due to limited installation space, the number of air conditioners installed is relatively small. Based on this, the embodiment of this application stacks multiple air conditioners with their filter screens facing upwards. Since the lower air conditioner needs to support the upper air conditioner, the filter screen needs to have high support strength, and existing filter screens cannot meet this requirement.

[0133] Based on this, the force transmission structure 10 described above is applied to the filter screen cover in this application embodiment. That is, the force transmission structure 10 is provided on the side of the filter screen cover frame. The filter screen cover with the force transmission structure 10 can disperse the force acting on it, thus providing better support strength. This allows air conditioners to be installed in a stacked manner, enabling the installation of more air conditioners in a limited space, which is highly practical. In the description of this specification, the reference to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., means that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0134] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0135] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A force transmission structure, characterized in that, include: Two entities (200); Two mass blocks (300) are respectively protruding on the two bodies (200) to achieve modulation of elastic waves and form a strip structure; Coupler (400) connects the two bodies (200); The thickness of the mass block (300) is greater than or equal to the thickness of the body (200).

2. The force transmission structure according to claim 1, characterized in that, The coupling element (400) includes a plurality of coupling posts (401), each of the coupling posts (401) is connected to two of the bodies (200), and each of the coupling posts (401) is inclined.

3. The force transmission structure according to claim 2, characterized in that, The multiple coupling pillars (401) are all tilted around the same clockwise direction.

4. The force transmission structure according to claim 2, characterized in that, The projection of the plurality of coupling pillars (401) onto any one of the bodies (200) is a polygon.

5. The force transmission structure according to claim 2, characterized in that, The coupling post (401) is cylindrical, and the diameter of the coupling post (401) is 0.5mm to 1.5mm. The interval between any two non-adjacent coupling posts (401) is 4mm to 8mm.

6. The force transmission structure according to any one of claims 1-5, characterized in that, The mass block (300) has a connecting surface, the body (200) has a mounting surface, the connecting surface is connected to the mounting surface, and the area of ​​the connecting surface is greater than or equal to one-third of the area of ​​the mounting surface.

7. The force transmission structure according to any one of claims 1-5, characterized in that, The distance between the two bodies (200) is 2mm-5mm, the thickness of the body (200) is 0.5mm-2mm, and the thickness of the mass block (300) is 2mm-6mm.

8. The force transmission structure according to any one of claims 1-5, characterized in that, The body (200) is rectangular with a side length of 8mm-12mm, and the mass block (300) is rectangular with a side length of 5mm-10mm.

9. The force transmission structure according to any one of claims 1-5, characterized in that, The coupling element (400) and the mass block (300) are respectively disposed on both sides of the body (200), and the two mass blocks (300) are disposed opposite to each other.

10. A packaging component, characterized in that, It includes a plurality of protective elements (501), two adjacent protective elements (501) are connected, the protective elements (501) cover the outer surface of the item to be packaged, and at least one of the protective elements (501) is provided with a force transmission structure (10) as described in any one of claims 1-9.

11. The packaging assembly according to claim 10, characterized in that, The coupling element (400) of the force transmission structure (10) of two adjacent protective elements (501) is tilted around different clockwise directions.

12. The packaging assembly according to claim 10, characterized in that, The protective component (501) is provided with a plurality of force transmission structures (10), and the plurality of force transmission structures (10) are arranged in a matrix.

13. The packaging assembly according to any one of claims 11-12, wherein the packaging assembly (500) further comprises a support (600) covering the outer surface of the packaging assembly (500).

14. An electrical component, characterized in that, Includes electrical equipment and a packaging assembly (500) as described in any one of claims 10-13, wherein a plurality of the protective elements (501) cover the outer surface of the electrical equipment.

15. A filter screen, characterized in that, The filter screen is provided with a force transmission structure (10) as described in any one of claims 1-9.

16. An electrical appliance, characterized in that, Includes the filter screen as described in claim 15.

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