Foam protector and packaging structure

Abstract

The utility model provides a kind of foam protection block and packing structure, the foam protection block is equipped with protection block main part, the protection block main part is used to butt air conditioner main body end face, the side wall of the protection block main part is equipped with the avoidance slot, the avoidance slot is used for the protruding component of air conditioner main body end face clamping connection.The utility model forms physical wrapping type limit to protruding component on air conditioner main body end face by avoidance slot, avoids its direct stress in the pressure of stacking and stacking or the impact of transportation jolt, also can buffer and disperse external force to the impact of air conditioner main body by protection block main part, realize the combination of the fixed-point protection of protruding component and air conditioner main body protection, effectively reduce the component damage and deformation rate, to reduce the air conditioner operation problem caused by component failure, significantly reduce after-sales maintenance cost, while avoiding the use of user to install component damage and produce use trouble.

Description

Technical Field

[0001] This utility model relates to the field of air conditioner packaging technology, and more specifically to a foam protective block and packaging structure. Background Technology

[0002] Ceiling-mounted air conditioners are recessed air conditioning units installed in the ceiling, widely used in large public places such as shopping malls, offices, hotel lobbies, and some family living rooms. During the packaging process of ceiling-mounted air conditioners, the main body of the air conditioner and the panel are usually packaged and shipped separately. The electrical box, fan blades, and other components exposed on the end face of the air conditioner body are left unprotected during shipping and subsequent distribution.

[0003] Because ceiling-mounted air conditioners are relatively heavy, typically weighing around 35kg, the main body of the air conditioner is inevitably subjected to external forces during storage and transportation before installation. Exposed electrical boxes, fan blades, and other protruding parts are easily damaged or deformed due to squeezing or collisions, which can lead to the air conditioner malfunctioning, increasing after-sales maintenance costs for companies and causing inconvenience for users. Utility Model Content

[0004] The purpose of this utility model is to overcome the defects of the prior art and provide a foam protective block and packaging structure to solve the technical problem of exposed protruding parts on the main body of the ceiling-mounted air conditioner, which are easily damaged.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, this utility model provides a foam protective block for protecting a ceiling-mounted air conditioner. The foam protective block has a main body for abutting against the end face of the air conditioner body. A clearance groove is provided on one side wall of the main body for engaging protruding parts on the end face of the air conditioner body.

[0006] In one embodiment, the foam protective block is further provided with two limiting protrusions on the main body of the protective block. The limiting protrusions are located on the side of the main body of the protective block away from the clearance groove, and are used to abut against the side wall of the air conditioner body.

[0007] In one embodiment, the two limiting protrusions are symmetrically arranged on two end corners of the protective block body on the side away from the clearance groove.

[0008] In one embodiment, the limiting protrusion is arranged in the form of a triangular prism, with the sidewall of the limiting protrusion having the largest area facing the clearance groove, and the remaining sidewalls arranged along the edge of the protective block body.

[0009] In one embodiment, the limiting protrusion has a slot on the side wall facing the avoidance groove, and the slot is set according to the corner shape of the air conditioner body.

[0010] In one embodiment, the limiting protrusion and / or the protective block body are provided with a material-stealing hole.

[0011] In one embodiment, the material-stealing hole is a triangular hole.

[0012] In one embodiment, the two end corners of the protective block body on the side away from the clearance groove are set at right angles.

[0013] Secondly, this utility model provides a packaging structure, which includes: the foam protective block as described above.

[0014] In one embodiment, there are two foam protective blocks, which abut against the air conditioner body from both sides, and the clearance groove is located on the side wall of the two air conditioner bodies that are close to each other.

[0015] Compared with the prior art, the advantages of this utility model are as follows: This utility model forms a physical wrapping and limiting effect on the protruding parts on the end face of the air conditioner body through the avoidance groove, avoiding direct force on them during stacking or transportation bumps. It can also buffer and disperse the impact of external forces on the air conditioner body through the protective block body, realizing the combination of fixed-point protection for protruding parts and protection of the air conditioner body, effectively reducing component damage and deformation rate, thereby reducing air conditioner operation problems caused by component failure, significantly reducing after-sales maintenance costs, and avoiding user inconvenience caused by component damage before installation.

[0016] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of this utility model more obvious and understandable, the following are preferred embodiments, which are described in detail below. Attached Figure Description

[0017] Figure 1 This is a structural diagram of an existing air conditioner body; Figure 2 This is a top view of the existing air conditioner body. Figure 3 A schematic diagram illustrating an application scenario of a foam protective block provided by this utility model; Figure 4 A schematic diagram of the structure of a foam protective block provided by this utility model; Figure 5 This is a side view of the foam protective block according to Embodiment 2 of this utility model; Figure 6 This is a top view of the foam protective block according to Embodiment 2 of this utility model; Figure 7 This is a schematic diagram of the structure of the foam protective block according to Embodiment 3 of this utility model; Figure 8 This is a side view of the foam protective block according to Embodiment 3 of this utility model; Figure 9 This is a top view of the foam protective block according to Embodiment 3 of this utility model; Figure 10 This is a schematic diagram of a packaging structure provided by the present invention.

[0018] Figure label: 1. Foam protective block; 11. Protective block body; 111. Clearance groove; 112. Material leakage hole; 12. Limiting protrusion; 121. Slot; 13. Installation mark; 2. Air conditioner body; 21. Protruding part; 211. Electrical box; 212. Fan blade. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] It should be understood that, when used in this specification and the appended claims, the terms “comprising” and “including” indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0021] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0022] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0023] Example 1 See Figures 1 to 4 As shown, this embodiment discloses a foam protective block 1 for protecting a ceiling-type air conditioner. The foam protective block 1 is provided with a protective block body 11, which is used to abut against the end face of the air conditioner body 2. A relief groove 111 is provided on one side wall of the protective block body 11, which is used to snap onto the protruding part 21 on the end face of the air conditioner body 2.

[0024] In practice, first align the main body 11 of the foam protective block 1 with the end face of the ceiling-mounted air conditioner body 2, so that the end face fits with the main body 11 of the protective block; at the same time, align the clearance groove 111 with the exposed protruding part 21 on the end face of the air conditioner body 2, slide the main body 11 of the protective block until the protruding part 21 is engaged with the clearance groove 111, so that the main body 11 of the protective block is fitted over the protruding part 21 through the clearance groove 111, thereby protecting the protruding part 21 and the air conditioner body 2.

[0025] In this embodiment, the foam protective block 1 forms a physical wrapping and limiting effect on the protruding part 21 on the end face of the air conditioner body 2 through the avoidance groove 111, preventing it from being directly subjected to force during stacking or transportation bumps. The protective block body 11 can also buffer and disperse the impact of external forces on the air conditioner body 2, achieving a combination of fixed-point protection for the protruding part 21 and protection for the air conditioner body 2. This effectively reduces component damage and deformation rate, thereby reducing air conditioner operation problems caused by component failure, significantly reducing after-sales maintenance costs, and avoiding user inconvenience caused by component damage before installation.

[0026] In a further embodiment, the clearance groove 111 is adapted to the shape of the protruding component 21. The clearance groove 111 adapts to the shape of the protruding component 21, which can increase the contact area between the two, improve the snap-fit ​​stability, and thus improve the protective capability of the foam protective block 1 for the protruding component 21, and reduce the risk of damage to the protruding component 21 and the protective block.

[0027] In a preferred embodiment, the clearance groove 111 is adapted to the shape of the electrical box 211 and is used to engage the electrical box 211. It is understood that protruding components 21 such as the electrical box 211 and fan blades 212 are typically located on the top end face of the ceiling-mounted air conditioner body 2, and the electrical box 211 is higher than the fan blades 212. The foam protective block 1 engages with the electrical box 211, forming a protective structure higher than the fan blades 212. When packaging boxes are stacked on top, the weight is mainly borne by this protective structure, rather than directly pressing on the fan blades 212 or the electrical box 211, thus providing protection for both the fan blades 212 and the electrical box 211. The height of the electrical box 211 forms a protective block body 11 that is higher than the fan blade 212, which supports the stacked weight or external force and transfers it to the foam protective block 1, indirectly protecting the fan blade 212 from compression and deformation. This achieves coordinated protection of multiple core components by a single foam protective block 1. Furthermore, the clearance groove 111 is adapted to the shape of the electrical box 211, making it less likely for the foam protective block 1 to loosen after it is installed on the air conditioner body 2, thus ensuring the continuity of the protective effect.

[0028] In a preferred embodiment, the groove 111 has rounded corners. The rounded corner design can prevent the sharp corners of the groove from causing scratch damage to the outer wall of the electrical box 211 or the operator, while reducing stress concentration at the groove opening, improving the structural strength of the foam protective block 1, preventing the groove opening from cracking due to collisions during transportation, and extending the service life of the protective block.

[0029] In a further embodiment, the foam protective block 1 is further provided with two limiting protrusions 12 located on the main body 11 of the protective block. The limiting protrusions 12 are located on the side of the main body 11 of the protective block away from the clearance groove 111, and are used to abut against the side wall of the air conditioner body 2. The limiting protrusions 12 form a physical protective barrier by directly abutting against the side wall of the air conditioner body 2, avoiding scratches and dents caused by direct collision and friction between the side wall and the packaging box or other objects. When installing the foam protective block 1, first align the clearance groove 111 with the protruding part 21, and then move the main body 11 of the protective block so that the two limiting protrusions 12 gently fit against the side wall of the air conditioner body 2. The flexible contact between the limiting protrusions 12 and the side wall of the air conditioner body 2 forms protection, avoiding damage to the side wall of the air conditioner body 2 caused by hard contact. Together with the main body 11 of the protective block, it forms a double protection for the side wall and end face of the air conditioner body 2.

[0030] In a further embodiment, two limiting protrusions 12 are symmetrically arranged on the two end corners of the protective block body 11 on the side away from the clearance groove 111. The symmetrical arrangement ensures that the two limiting protrusions 12 are subjected to uniform force, preventing the foam protective block 1 from tilting due to unbalanced force on one side, ensuring that the protective block body 11 and the end face of the air conditioner always remain in a vertical fit, and at the same time, the layout of the end corners does not occupy the core buffer area of ​​the protective block body 11, thus taking into account both the limiting function and the buffering performance.

[0031] In a further embodiment, the limiting protrusion 12 is arranged in the form of a triangular prism, with the sidewall of the limiting protrusion 12 having the largest area facing the avoidance groove 111, and the remaining sidewalls arranged along the edge of the protective block body 11. The triangular prism structure is based on the principle of triangle stability, enabling the limiting protrusion 12 to act as a reinforcing rib, greatly improving its own structural strength and resistance to deformation, and preventing the limiting protrusion 12 from breaking or collapsing during the protection process; the sidewall with the largest area fits closely to the sidewall or corner of the air conditioner, which not only stably transmits the buffering force through the reinforcing rib structure, but also effectively blocks external collisions, achieving the dual goals of structural reinforcement and sidewall protection, taking into account both the reliability of protection and the durability of the structure.

[0032] In a preferred embodiment, the triangular prism is a right-angled triangular prism. Preferably, the right-angled triangular prism is a triangular prism with a cross-section of a right-angled isosceles triangle. Based on the stability principle of right-angled triangles, the right-angled triangular prism makes the structural strength of the limiting protrusion 12 more prominent, and the regularity of the right-angled sides facilitates the consistency of the angle with the right-angled end angle of the protective block body 11, that is, the end point and the right-angled side coincide, forming an integrated and stable structure.

[0033] It is understood that in other embodiments, an arc-shaped transition surface may be added at the right angle of the right-angled triangular prism to avoid the right angle from being easily scratched and damaged by external structures or packaging mechanisms during assembly and transportation.

[0034] In other embodiments, a triangular frustum, a pentagonal prism, or other polyhedrons can be used instead of a triangular prism. The triangular frustum structure also utilizes the stability of triangles to improve the structural strength of the foam protective block 1; the pentagonal prism structure retains the triangular stabilizing unit while expanding the sidewall protection area.

[0035] In a further embodiment, the limiting protrusion 12 has a slot 121 on its side wall facing the avoidance groove 111, and the slot 121 corresponds to the corner shape of the air conditioner body 2. That is, the slot 121 is adapted to the corner shape of the air conditioner body 2. It can be understood that, as Figure 2 As shown, the air conditioner body 2 is typically in the shape of a near-quadrangular prism, with three of its side edges having chamfered corners and the remaining side edge being bent. The limiting protrusion 12 can be fitted with a slot 121 based on the chamfered and bent design. The slot 121 matches the corner shape of the air conditioner body 2, allowing the limiting protrusion 12 to precisely engage with the corner, further enhancing the protection of the air conditioner body 2.

[0036] In a further embodiment, the limiting protrusion 12 and / or the protective block body 11 are provided with a material-stealing hole 112. The material-stealing hole 112 reduces the amount of foam material used, lowers production costs and product weight, and facilitates transportation and installation; at the same time, the material-stealing hole 112 can form a hollow structure, enhancing the buffering performance of the protective block and improving the absorption effect of external forces.

[0037] In other embodiments, a honeycomb-shaped hollow structure or a through-hole blind hole can be used instead of the material-stealing hole 112 to reduce material usage and improve the cushioning effect.

[0038] In a preferred embodiment, the material-stealing hole 112 is a triangular hole. The triangular hole has strong structural stability and, compared with a circular or square hole, can better distribute the stress while reducing the amount of material used, avoiding cracking caused by stress concentration in the opening area; the triangular corner structure can also enhance the internal support of the foam, improving the protective block's resistance to compression and deformation.

[0039] In other embodiments, square holes, rhomboid holes, hexagonal holes, or other shapes of holes can be used instead of triangular holes to balance weight reduction and strength requirements through different polygonal structures, depending on the size of the limiting protrusion 12 or actual needs.

[0040] In a preferred embodiment, the triangular hole and the limiting protrusion 12 are at the same angle. More specifically, the angles of the three corners of the triangular hole correspond one-to-one with the angles of the three corners of the cross-section of the triangular prism-shaped limiting protrusion 12. The alignment of the triangular hole and the limiting protrusion 12 ensures that the force direction inside the foam protective block 1 matches the force direction of the limiting protrusion 12, improving the overall mechanical stability of the structure, preventing uneven local stress caused by angular misalignment, thereby enhancing the protective block's resistance to pressure and deformation, and extending its service life.

[0041] In a further embodiment, the two end corners of the protective block body 11 on the side away from the clearance groove 111 are set at right angles. More specifically, the angle of the triangular prism-shaped limiting protrusion 12 is completely consistent with the right angle end corner. The right angle endpoint of the triangular prism cross section coincides with the right angle endpoint of the end corner of the protective block body 11, and the right angle side of the triangular prism cross section coincides with the right angle side of the end corner of the protective block body 11. This makes the limiting protrusion 12 and the end corner of the protective block body 11 form an integrated and stable structure, avoiding stress misalignment when subjected to force. This not only strengthens the structural strength of the foam protective block 1, but also allows the limiting protrusion 12 to fit more accurately against the corner of the air conditioner side wall, improving the reliability of the side wall protection. In addition, the right-angle setting of the end corners of the protective block body 11 makes the end corner structure of the protective block body 11 regular, which is convenient for mold processing and forming, and reduces the production difficulty; at the same time, the right-angle end corners can form a close fit and support with the inner wall of the packaging box, and use the limiting effect of the packaging box to further fix the protective block, prevent the protective block from shaking in the packaging box during transportation, and improve the overall packaging stability.

[0042] In a further embodiment, the thickness of the protective block body 11 is 20mm. The 20mm thickness ensures that the protective block body 11 has sufficient cushioning performance to effectively absorb the impact force during transportation, while avoiding material waste and increased product weight due to excessive thickness. It balances protective effect and economy, and is also compatible with the conventional end face size of ceiling-mounted air conditioners, making it easy to install and package.

[0043] It is understood that, in other embodiments, the thickness of the protective block body 11 may be adjusted according to the weight of the ceiling-mounted air conditioner and the transportation environment.

[0044] In a further embodiment, the distance between the right-angled side of the material-stealing hole 112 and the right-angled side of the cross-section of the limiting protrusion 12 and the right-angled side of the end corner of the protective block body 11 is 20mm. The 20mm distance ensures that there is sufficient solid material around the material-stealing hole 112, avoiding the reduction in structural strength of the edge of the protective block or the limiting protrusion 12 due to the hole being too close, preventing edge cracking or protrusion detachment due to collision during transportation, and balancing the weight reduction effect with structural stability.

[0045] It is understood that in other embodiments, the distance between the right-angled side of the material-stealing hole 112 and the right-angled side of the cross-section of the limiting protrusion 12 and the right-angled side of the end corner of the protective block body 11 can be adjusted according to actual needs or the size of the material-stealing hole 112. For example, when the side length of the material-stealing hole 112 is greater than 20mm, the distance is set to 25mm; when the side length of the material-stealing hole 112 is less than 10mm, the distance is set to 15mm.

[0046] In a further embodiment, the protective block body 11 and the limiting protrusion 12 are integrally formed. The integrally formed structure can eliminate the connection gap between the protective block body 11 and the limiting protrusion 12, improve the overall structural strength and stability, and prevent the protrusion from falling off due to collision during transportation; it also simplifies the production process, reduces assembly steps, improves production efficiency, and reduces production costs.

[0047] In a further embodiment, the foam protective block 1 is made of EPS material. EPS, or molded polystyrene foam, also known as polystyrene board, is a closed-cell plastic sheet made from expandable polystyrene beads. It is pre-foamed and then heated in a mold to form a closed-cell structure. EPS has advantages such as being lightweight, having good cushioning performance, heat insulation, moisture resistance, and corrosion resistance. It can effectively absorb the impact force during transportation, protecting the air conditioner from damage. At the same time, EPS material is low in cost, has mature processing technology, is easy to mass-produce, and is recyclable, meeting environmental protection requirements. In specific implementation, an integrated mold design is adopted, integrating the structure of the protective block body 11 and the limiting protrusion 12 into the same mold. Through EPS material injection molding, the protective block body 11 and the limiting protrusion 12 are formed in one step. After molding, no additional assembly is required; only surface cleaning and quality inspection are needed.

[0048] It is understood that in other embodiments, EPE (pearl cotton), EVA (ethylene / vinyl acetate) or polyurethane foam can be used to replace EPS material as needed. Among them, EPE material has good flexibility, EVA material has strong wear resistance, and polyurethane foam material has better cushioning performance. Composite materials can also be used to replace EPS material, for example, the outer layer is an EVA wear-resistant layer and the inner layer is an EPS cushioning layer.

[0049] In a further embodiment, the density of the foam protective block 1 is 25 kg / m³. 3 25kg / m 3 The density of the foam protective block 1 gives it both good cushioning performance and structural strength. It can effectively absorb the impact force during transportation and withstand the pressure during stacking, avoiding excessive deformation. The density is highly adaptable and can meet the protection requirements of ceiling-mounted air conditioners with a capacity of 5 horsepower or less, balancing protection effect and economy. At the same time, the EPS material of this density has a moderate cost and is easy to produce and process, balancing protection effect and economy.

[0050] It is understood that in other embodiments, the density of the foam protective block 1 can be adjusted according to actual needs. For example, a density of 20 kg / m³ can be selected for lightweight packaging. 3 Low-density materials, high-strength protection uses 30kg / m 3 High-density materials.

[0051] In a further embodiment, the protective block body 11 is provided with an installation label 13. The installation label 13 can quickly guide operators to correctly install the foam protective block 1, avoiding protection failure due to incorrect installation direction and improving installation efficiency. In specific implementation, the content of the label is determined according to the installation requirements, such as installation direction text, arrows, model, and indicated color; the label is placed in a conspicuous position on the protective block body 11 through mold engraving, screen printing, or pasting processes; ensuring that the label is clear, wear-resistant, and not easily detached or blurred during transportation and use.

[0052] In a preferred embodiment, the installation mark 13 is located on the side of the protective block body 11 away from the limiting protrusion. Positioning the installation mark 13 away from the limiting protrusion avoids the protrusion obscuring the mark, ensuring that operators can quickly and clearly see it during installation, thus improving identification convenience. Simultaneously, this location is less likely to be obscured by air conditioner components or packaging after installation, facilitating subsequent inspection and verification.

[0053] In other embodiments, the installation mark 13 can be set on the side wall of the protective block body 11 or the outer side wall of the limiting protrusion 12, or the installation mark 13 can be set on both the side away from the limiting protrusion and the side side to form dual guidance.

[0054] In other embodiments, a code for the air conditioner model can be set next to the letter "LT" to specify the range of the foam protective block 1 that is compatible with this embodiment.

[0055] Example 2 See Figures 3 to 6 As shown, this embodiment discloses a foam protective block 1, based on the foam protective block 1 of Embodiment 1. Furthermore, the foam protective block 1 of this embodiment is suitable for securing and protecting the air conditioner body 2 and the protruding parts 21 from the left side of the air conditioner body 2.

[0056] In a further embodiment, the installation identifier 13 is "LT". "LT" is an abbreviation for "LeftTop". As the installation identifier 13, it is concise and clear, making it easy for assemblers to quickly identify. It clearly indicates that the foam protective block 1 is dedicated to the left side installation, avoiding confusion with the right side foam protective block 1, improving installation accuracy and efficiency, and is especially suitable for batch packaging scenarios.

[0057] It is understood that in other embodiments, the word "LT" can be replaced by words such as "top left", "left", "L" or left arrow symbol, depending on actual needs, to achieve the directional guidance function.

[0058] In a further embodiment, the clearance groove 111 of the foam protective block 1 in this embodiment is adapted to the long or short side wall of the electrical box 211, for engaging with the long or short side wall of the electrical box 211. It is understood that, as Figure 2 As shown, the electrical box 211 of the ceiling-mounted air conditioner is L-shaped, with the longer side typically handling the high-voltage (main power) circuitry and the shorter side typically handling the low-voltage (core control) circuitry. The clearance groove 111 fits the sidewall of either the longer or shorter side of the electrical box 211, with its opening width slightly greater than the length of the sidewall. In this embodiment, the clearance groove 111 increases the contact area between the foam protective block 1 and the electrical box 211, improving the stability of the connection, better dispersing stacking pressure and transportation impact, and preventing deformation of the longer side of the electrical box 211 due to uneven stress. Simultaneously, the protection of the sidewall of the electrical box 211 covers more areas of core electrical components, enhancing the targeted nature of the protection.

[0059] Example 3 See Figure 3 and Figures 7 to 9 As shown, this embodiment discloses a foam protective block 1, based on the foam protective block 1 of Embodiment 1. Furthermore, the foam protective block 1 of this embodiment is suitable for securing and protecting the air conditioner body 2 and the protruding part 21 from the right side of the air conditioner body 2.

[0060] In a further embodiment, the installation identifier 13 is marked with the letter "RT". "RT", short for "RightTop", is concise and clear, facilitating quick identification by assembly personnel. It clearly indicates that the foam protective block 1 is dedicated to right-side installation, avoiding confusion with the left-side foam protective block 1, thus improving installation accuracy and efficiency, especially suitable for batch packaging scenarios. The "RT" identifier easily pairs with the "LT" identifier in Embodiment Two, allowing operators to quickly distinguish between the left and right foam protective blocks 1, preventing misalignment and ensuring that the two foam protective blocks 1 can provide coordinated protection from both sides, improving packaging efficiency and protective reliability.

[0061] It is understood that in other embodiments, the words "top right", "right", "R" or the right arrow symbol can be used to replace the word "RT" as needed to achieve the directional guidance function.

[0062] In a further embodiment, the clearance groove 111 of the foam protective block 1 in this embodiment is adapted to the end face of the electrical box 211 where the short side is away from the long side or the end face where the long side is away from the short side, for engaging the end of the electrical box 211 where the short side is away from the long side or the end where the long side is away from the short side. It is understood that, as Figure 2 As shown, the electrical box 211 of the ceiling-mounted air conditioner is L-shaped, with the longer side typically handling the high-voltage (main power) circuit and the shorter side typically handling the low-voltage (core control) circuit. The clearance groove 111 fits onto the end of the electrical box 211 where the longer or shorter side is furthest apart. The groove width is slightly greater than the length of that end face, allowing for precise protection of the electrical box 211's vulnerable areas, preventing corner deformation or damage to internal components due to stress. Simultaneously, it makes the connection to the electrical box 211 more compact, occupying less packaging space, thus reducing the size of the packaging box and lowering transportation costs.

[0063] Example 4 See Figures 1-10 As shown, this embodiment discloses a packaging structure, including a foam protective block 1 as described in Embodiment 1, Embodiment 2, or Embodiment 3.

[0064] In practice, select the corresponding foam protective block 1 according to the model and specifications of the air conditioner; confirm that the installation mark 13 is correct, push the foam protective block 1 from the side of the air conditioner body 2 until it abuts against the air conditioner body 2 and the protruding part 21; after the foam protective block 1 is fixed and secure, put the air conditioner with the foam protective block 1 installed into the packaging box to complete the packaging.

[0065] The packaging structure of this embodiment integrates the protective advantages of the foam protective block 1 mentioned above. Through targeted protective design, it achieves comprehensive protection of the end face, side wall, and protruding parts 21 of the air conditioner body 2, significantly reducing the risk of component damage during transportation and stacking. At the same time, the foam protective block 1 has a simple structure and is easy to install, which can improve the packaging efficiency of the ceiling-mounted air conditioner.

[0066] See Figure 10 As shown, in a further embodiment, there are two foam protective blocks 1. The two foam protective blocks 1 abut against the air conditioner body 2 from both sides, and the clearance groove 111 is located on the side wall of the two air conditioner bodies 2 that are close to each other. If the foam protective blocks 1 of Embodiment 2 and Embodiment 3 are used, specifically, one foam protective block 1 marked "LT" in Embodiment 2 and one foam protective block 1 marked "RT" in Embodiment 3 are selected; the foam protective block 1 marked "LT" abuts against the end face of the left side of the air conditioner body 2, and the clearance groove 111 is engaged with the electrical appliance side, and the limiting protrusion 12 abuts against the left side wall of the air conditioner body 2; the foam protective block 1 marked "RT" abuts against the end face of the right side of the air conditioner body 2, and the clearance groove 111 is engaged with one end of the electrical appliance box 211, and the limiting protrusion 12 abuts against the right side wall of the air conditioner body 2. Two foam protective blocks 1 symmetrically abut against the air conditioner body 2 from both sides, forming a cooperative protective structure, making the limiting force and buffering force on the air conditioner body 2 more uniform, avoiding the force imbalance caused by unilateral protection; the clearance grooves 111 are set opposite to each other, and can simultaneously lock onto both sides of the electrical box 211, further enhancing the fixing effect of the electrical box 211, preventing it from swaying left and right during transportation, and improving the protection reliability of the core components.

[0067] In a further embodiment, a gap exists between the main bodies 11 of the two foam protective blocks 1. This gap allows at least a portion of the electrical box 211 and the fan blade 212 to remain exposed, enabling subsequent process personnel to visually inspect the assembly tightness of the electrical box 211, the installation flatness of the fan blade 212, and any damage without disassembling the foam protective blocks 1. This improves the efficiency of mutual inspection and reduces the outflow of defective products.

[0068] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. A foam protective block for protecting ceiling-mounted air conditioners, characterized in that: The foam protective block has a protective block body, which is used to abut against the end face of the air conditioner body. A clearance groove is provided on one side wall of the protective block body, which is used to engage protruding parts on the end face of the air conditioner body.

2. The foam protective block according to claim 1, characterized in that, The foam protective block is also provided with two limiting protrusions on the main body of the protective block. The limiting protrusions are located on the side of the main body of the protective block away from the clearance groove, and are used to abut against the side wall of the air conditioner body.

3. The foam protective block according to claim 2, characterized in that, The two limiting protrusions are symmetrically arranged on the two end corners of the protective block body on the side away from the clearance groove.

4. The foam protective block according to claim 3, characterized in that, The limiting protrusion is arranged in the form of a triangular prism, with the sidewall of the limiting protrusion having the largest area facing the clearance groove, and the remaining sidewalls arranged along the edge of the main body of the protective block.

5. The foam protective block according to claim 4, characterized in that, The limiting protrusion has a slot on the side wall facing the avoidance groove, and the slot is set according to the corner shape of the air conditioner body.

6. The foam protective block according to claim 2, characterized in that, The limiting protrusion and / or the protective block body are provided with a material-stealing hole.

7. The foam protective block according to claim 6, characterized in that, The material-stealing hole is a triangular hole.

8. The foam protective block according to claim 1, characterized in that, The two end corners of the protective block body on the side away from the clearance groove are set at right angles.

9. A packaging structure, characterized in that, include: The foam protective block as described in any one of claims 1-8.

10. The packaging structure according to claim 9, characterized in that, The number of foam protective blocks is two, and the two foam protective blocks abut against the air conditioner body from both sides. The clearance groove is located on the side wall of the two air conditioner bodies that are close to each other.

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