A replaceable wrap angle assembly and outer housing structure

Abstract

The utility model relates to the technical field of shell protection structure, specifically, relate to a replaceable corner assembly and shell body structure, include: corner assembly, the corner assembly includes corner lining and corner outer sheet, the corner lining and the outside shape of corner assembly are same and bond as a whole, self -alignment and locking structure, the self -alignment and locking structure includes the mushroom peg of setting in the corner lining and one -way sliding slot, one -way sliding slot is used for guiding and fixed the mushroom peg, realizes the orientation and locking positioning in the assembly process. The utility model solves the corner maintenance difficulty and design limitation problem through the replaceable modularization corner structure, the system has the strong versatility, the maintainability and high protection strength, can become the basic connection standard of various box, equipment and furniture industry.

Description

Technical Field

[0001] This utility model relates to the field of shell protection structure technology, specifically to a replaceable corner protector assembly and shell structure. Background Technology

[0002] Existing products (such as suitcases, toolboxes, and appliance casings) typically reinforce their corners with rivets, screws, or one-piece molding. As an essential storage tool for daily travel, the corners of suitcases are highly susceptible to collisions and friction during handling and transport, leading to wear, deformation, or even damage. Current technology often uses corner protectors that are fixedly connected to the suitcase body, such as through direct glue bonding, anchoring, or screw fixing, with the corner protectors being a single, integrated design.

[0003] The corner fixing structure in many existing products has obvious defects: On the one hand, when the corner is damaged by a collision, because the corner is tightly connected to the shell and cannot be disassembled, the user cannot replace the corner separately and can only repair or replace the entire shell, which not only increases the user's usage cost, but also wastes resources; on the other hand, the fixed corner design makes the appearance style of the shell monotonous, and users cannot change the corners to different materials, colors or styles according to their personal preferences, which makes it difficult to meet personalized needs.

[0004] Furthermore, some existing detachable corner protector structures employ complex snap-fit ​​designs, making installation and disassembly inconvenient and exhibiting poor connection stability. They are prone to detachment under external impact, failing to provide effective protection. Therefore, developing a stable, easy-to-install, and replaceable corner protector structure has become a pressing technical problem in this field. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a replaceable corner protector component, which enables convenient disassembly and replacement of the corner protector, reduces the cost of use, improves connection stability, and meets users' personalized appearance customization needs.

[0006] To achieve the above objectives, this utility model provides a replaceable corner protector assembly, comprising: The corner protector inner liner and the corner protector outer piece have the same outer shape and are bonded together as a whole by an adhesive. At this time, the outer surface of the corner protector inner liner is attached to the inner surface of the corner protector outer piece. The self-alignment and locking structure includes mushroom-shaped pins and one-way grooves disposed in the inner lining of the corner protector. The one-way grooves are used to guide and fix the mushroom-shaped pins to achieve guiding and locking positioning during assembly.

[0007] Preferably, the top of the inner corner liner and the outer corner piece are provided with through holes in the vertical direction, and the through holes are used for the installation of detachable fasteners; Also includes: A complementary locking element is screwed into the removable fastener from the inside of the outer corner piece, thereby locking the removable fastener with the complementary locking element and fixing the corner assembly in the current position.

[0008] Preferably, the bottom of the complementary locking element has an anti-rotation feature area, which is used to prevent relative rotation between the complementary locking element and the corner assembly.

[0009] Preferably, the adhesive is one of epoxy resin, polyurethane, or acrylic adhesive.

[0010] Preferably, the inner corner liner and the outer corner piece can be disassembled and replaced without damage under stress or unlocking conditions.

[0011] Preferably, the outer corner piece is made of metal or plastic.

[0012] Preferably, the corner lining is injection molded from plastic material or integrally molded with the box body.

[0013] This utility model also provides an outer shell structure employing the corner-wrapping component described above, comprising: The housing has a recess on its periphery to accommodate the corner protector assembly, and the housing is engaged with the corner protector assembly by a self-aligning and locking structure.

[0014] Compared with the prior art, the technical solution proposed in this application has the following beneficial effects: The corner protector assembly of this utility model adopts an integral structure in which the inner corner protector liner and the outer corner protector piece are bonded together, and is connected to the outer shell by mushroom nail snap-fit ​​and detachable fasteners, which makes disassembly and assembly convenient. When the corner protector is damaged or the appearance needs to be replaced, the user can replace the corner protector assembly separately without replacing the entire suitcase, which reduces the cost of use and reduces the waste of resources. The horizontal displacement of the corner protector assembly is limited by the interlocking of the mushroom-shaped nails and the one-way sliding groove of the corner protector lining; vertical locking is achieved by the detachable fasteners and the complementary locking elements on the inside. At the same time, the anti-rotation feature area of ​​the complementary locking elements prevents the locking structure from loosening due to rotation. The multiple locking structure ensures the stability of the connection between the corner protector assembly and the cabinet, and it is not easy to fall off even when subjected to external impact. The corner protector can be made of different materials such as metal or plastic, and the color and style can be flexibly designed. Users can change different corner protectors according to their personal preferences and usage scenarios to meet their personalized appearance customization needs. The inner corner lining can be mass-produced through injection molding, and the bonding process with the outer corner lining is simple; the design of the recessed and grooved parts of the box facilitates the installation and positioning of the mushroom nails, and the overall assembly process does not require professional tools, so users can operate it themselves. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a structural diagram of the outer shell of this utility model; Figure 2 This is a schematic diagram of the corner protector component structure of this utility model; Figure 3 This is an exploded view of the corner protector component of this utility model; Figure 4 This is a schematic diagram of the locking process of the detachable fastener and complementary locking element of this utility model; Figure 5 This is a schematic diagram of the detachable fastener and complementary locking element of this utility model after locking. Figure 6 This is a structural schematic diagram of the corner protector component of this utility model from another angle; In the diagram: 1-box body, 11-recess, 12-slot, 13-groove, 2-corner protector assembly, 21-corner protector liner, 211-one-way slide, 212-through hole, 22-corner protector outer piece, 3-mushroom nail, 4-removable fastener, 5-complementary locking element, 51-anti-rotation feature area. Detailed Implementation

[0016] The technical solutions in the embodiments of this utility model will be clearly and completely described and discussed below with reference to the accompanying drawings. Obviously, what is described here is only a part of the examples of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0017] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0019] Example 1 See Figure 2 and Figure 3 This embodiment provides a replaceable corner protector assembly. The corner protector assembly 2 includes a corner protector inner liner 21 and a corner protector outer sheet 22. The corner protector inner liner 21 is injection molded from PVC plastic material, and the corner protector outer sheet 22 is processed from aluminum alloy material. Aluminum alloy material not only has high strength and good wear resistance, but can also be anodized to present different colors. The corner protector inner liner 21 and corner protector outer sheet 22 are bonded together with an adhesive. In this embodiment, the adhesive used is one of epoxy resin, polyurethane, or acrylic adhesive, which can withstand temperature differences from −40℃ to +120℃.

[0020] See Figure 4 , Figure 5 and Figure 6 The corner protector liner 21 has a self-alignment and locking structure inside. The self-alignment and locking structure includes mushroom nails 3 and corresponding one-way grooves 211. The entrance of the one-way groove 211 is a flared opening, which facilitates the sliding of mushroom nails 3. The width inside the groove is slightly smaller than the head diameter of mushroom nails 3. The elasticity of nylon material is used to achieve an interference fit, so that mushroom nails 3 are not easy to fall out after sliding in, thus achieving horizontal positioning of the corner protector assembly 2 and the box 1.

[0021] See Figure 4 and Figure 5 The corner protector 2 has a through hole 212 in the vertical direction. The inner diameter of the through hole 212 is adapted to the outer diameter of the detachable fastener 4. In this embodiment, the detachable fastener 4 adopts a cross-slot countersunk screw. The countersunk design ensures that the screw head does not protrude from the surface of the corner protector 22, thus avoiding scratches.

[0022] The complementary locking element 5 is made of brass and has an internal thread that mates with the removable fastener 4. The complementary locking element 5 is screwed into the surface of the removable fastener 4 from the inside of the corner liner 21 and forms a locking fit with the removable fastener 4 to lock the corner assembly 2 and the housing 1 simultaneously.

[0023] The bottom end of the complementary locking element 5 is provided with a regular hexagonal anti-rotation feature area 51, which effectively prevents the complementary locking element 5 from rotating due to vibration during use and ensures the locking effect.

[0024] Example 2 See Figures 1 to 3 This embodiment provides an outer shell structure with replaceable corner protectors. In this embodiment, a suitcase is used as an example to illustrate the structure. Specifically, it includes a suitcase body 1, corner protectors 2, mushroom studs 3, detachable fasteners 4, and complementary locking elements 5.

[0025] The housing 1 is integrally injection molded from ABS plastic, featuring light weight and high strength. Recesses 11 are provided on all four corners of the housing 1 to accommodate corner protector components 2. The shape of the recesses 11 matches the outer shape of the corner protector components 2, ensuring that the corner protector components are flush with the housing surface after installation, preventing protrusion and potential damage from collisions. Two symmetrically distributed grooves 12 are provided on the surface of the recesses 11. The dimensions of the grooves 12 match the base of the mushroom-shaped nail 3, used to securely accommodate the mushroom-shaped nail 3. The mushroom-shaped nail 3 is made of nylon, possessing a certain degree of elasticity for easy snap-fit ​​installation.

[0026] It should be noted that the inner corner lining 21 can also be integrally molded with the box body 1, and the outer corner piece 22 can also be made of other materials such as plastic or leather.

[0027] The outer shapes of the inner corner lining 21 and the outer corner piece 22 are adapted to the corners of the suitcase, and the two are bonded together as a whole with epoxy resin glue. After bonding, the surface is flat and the connection is firm.

[0028] The complementary locking element 5 is made of brass and has an internal thread that mates with the removable fastener 4. The complementary locking element 5 is screwed into the surface of the removable fastener 4 from the inside of the housing 1 to form a locking fit with the removable fastener 4, thereby locking the corner assembly 2 and the housing 1 simultaneously.

[0029] The bottom end of the complementary locking element 5 is provided with a regular hexagonal anti-rotation feature area 51, and a square groove 13 is provided on the inner side of the housing 1 at the corresponding position. The anti-rotation feature area is embedded in the groove 13, which effectively prevents the complementary locking element 5 from rotating due to vibration during use and ensures the locking effect.

[0030] In this embodiment, the bottom of the complementary locking element 5 adopts a regular hexagonal anti-rotation feature area 51. This structure achieves anti-rotation through the rigid fit between the edges of the regular hexagon, resulting in uniform force distribution and convenient assembly. Correspondingly, a square groove 13 is provided on the mounting base on the outer side of the through hole 212 on the inner side of the case 1. The depth of the groove 13 is consistent with the height of the regular hexagonal protrusion. After the anti-rotation feature area 51 is fully embedded in the groove 13, the two fit together without gaps, which can effectively withstand torque and prevent the complementary locking element 5 from rotating due to vibration during the handling and transport of the suitcase, ensuring long-term stable locking effect.

[0031] In some embodiments, an anti-slip textured structure can also be used. If an anti-rotation design with an anti-slip textured structure is used, the bottom of the complementary locking element 5 can be changed to a serrated anti-slip texture based on this embodiment. The same serrated texture is also processed on the inner side mounting surface of the housing 1. When tightened, the textures mesh with each other and anti-rotation is achieved through friction. Only a texture milling process needs to be added during processing, and the cost is lower than that of a polygonal structure. In some embodiments, a positioning pin-pin hole structure can also be adopted. If a positioning pin-pin hole structure is adopted, a cylindrical positioning pin with a diameter of 3mm can be set at the center of the bottom of the complementary locking element 5, and a pin hole with a depth of 5mm is opened at the corresponding position on the inner side of the housing 1. During assembly, the positioning pin is first inserted into the pin hole to achieve pre-positioning, and then the thread is tightened, which can improve assembly efficiency.

[0032] The anti-rotation feature area is used to prevent relative rotation between the complementary locking element and the corner assembly. The core of this feature is to break the free rotation condition of the complementary locking element through "structural interference". By using the shape matching of the mechanical structure or friction constraint, the rotational motion is transformed into an immovable rigid limit. At the same time, it takes into account the ease of processing and assembly efficiency, and avoids the cost increase caused by adding additional complex locking components.

[0033] The specific structure can be selected in several forms, as follows: 1. Polygonal protrusion structure: such as a regular square or regular hexagonal protrusion, corresponding to a matching polygonal groove opened on the inner side of the box or the inner lining of the corner. After the protrusion is embedded in the groove, the edges of the polygon fit together to form a rigid limit, completely restricting the rotation. The present invention prefers a regular hexagonal structure because it has more uniform force distribution and better centering during assembly. 2. Anti-slip texture structure: A ring-shaped serrated anti-slip texture is set at the bottom of the complementary locking element, and a matching serrated texture is set on the corresponding contact surface. The friction is increased by the meshing of the texture, and it is not easy to rotate relative to each other even when subjected to slight vibration. This structure is suitable for scenarios where the anti-rotation precision requirement is not high and the processing cost is low. 3. Locating pin-pin hole structure: A cylindrical locating pin is set at the bottom of the complementary locking element, and a pin hole is opened at the corresponding position on the inner side of the housing. After the locating pin is inserted into the pin hole, it forms an axial limit. Combined with the radial constraint of the threaded connection, it achieves anti-rotation. This structure has high positioning accuracy and is suitable for scenarios with extremely high requirements for connection stability. 4. Keyway mating structure: A rectangular key is set at the bottom of the complementary locking element, and a keyway is opened on the mounting base inside the housing. After the rectangular key is embedded in the keyway, the torque is borne by the side of the key to achieve anti-rotation. This structure can withstand a large torque and is suitable for use in environments that are frequently subjected to impact and vibration. 5. Elastic claw structure: 3-4 elastic claws are evenly distributed around the circumference at the bottom of the complementary locking element. The claws have barbs at their ends. A ring groove is opened at the corresponding position on the inner side of the housing. When the complementary locking element is tightened, the barbs of the elastic claws engage with the ring groove, which can prevent rotation and axial loosening, resulting in excellent stability after assembly.

[0034] The assembly process in this embodiment is as follows: 1. First, embed the mushroom nail 3 into the groove 12 of the recess 11 of the box body 1, and fix the base of the mushroom nail 3 in the groove 12 with glue; 2. The inner corner liner 21 and the outer corner piece 22 are bonded together with epoxy resin adhesive to form a whole. After the adhesive cures, the corner assembly 2 is formed. 3. Align the one-way groove 211 of the corner protector assembly 2 with the mushroom nail 3, and slide it in along the guide slope until the corner protector assembly 2 is fully embedded in the recess 11 of the box body 1; 4. Pass the detachable fastener 4 through the through hole 212 from the outside of the corner piece 22 and screw it into the pre-set threaded hole of the housing 1 to initially fix the corner piece 2; 5. Screw the complementary locking element 5 into the end of the removable fastener 4 from the inside of the housing 1, and at the same time, insert the anti-rotation feature area 51 at the bottom of the complementary locking element 5 into the groove 13 inside the housing 1 to complete the overall locking.

[0035] When the corner protector assembly 2 needs to be replaced, simply remove the complementary locking element 5 from the inside of the housing 1, then unscrew the removable fastener 4 with a screwdriver, and then slide the corner protector assembly 2 out of the mushroom nail 3 in the opposite direction of the one-way slide groove 211 to replace the new corner protector assembly. The whole process does not require professional tools and can be operated by the user.

[0036] In another embodiment, the outer corner protector 22 can be made of ABS plastic and processed into different patterns and colors through injection molding, which is cheaper and offers more personalized options; the inner corner protector lining 21 and the case body 1 are integrally molded, which further improves the structural stability and is suitable for suitcase products with higher load-bearing strength requirements.

[0037] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, nor to combinations thereof. Those skilled in the art can make various changes, modifications, or combinations within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A replaceable corner protector assembly, characterized in that, include: The corner protector inner liner and the corner protector outer piece have the same outer shape and are bonded together as a whole by an adhesive. At this time, the outer surface of the corner protector inner liner is attached to the inner surface of the corner protector outer piece. The self-alignment and locking structure includes mushroom-shaped pins and one-way grooves disposed in the inner lining of the corner protector. The one-way grooves are used to guide and fix the mushroom-shaped pins to achieve guiding and locking positioning during assembly.

2. The replaceable corner protector assembly according to claim 1, characterized in that, The top of the inner corner liner and the outer corner piece are provided with through holes in the vertical direction, and the through holes are used for the installation of detachable fasteners; Also includes: A complementary locking element is screwed into the removable fastener from the inside of the outer corner piece, thereby locking the removable fastener with the complementary locking element and fixing the corner assembly in the current position.

3. A replaceable corner protector assembly according to claim 2, characterized in that, The bottom of the complementary locking element has an anti-rotation feature area, which is used to prevent relative rotation between the complementary locking element and the corner assembly.

4. A replaceable corner protector assembly according to claim 1, characterized in that, The adhesive is one of epoxy resin, polyurethane, or acrylic adhesive.

5. A replaceable corner protector assembly according to claim 1, characterized in that, The inner corner liner and the outer corner piece can be disassembled and replaced without damage under stress or unlocking conditions.

6. A replaceable corner protector assembly according to claim 1, characterized in that, The outer corner piece is made of metal or plastic.

7. A replaceable corner protector assembly according to claim 1, characterized in that, The corner lining is injection molded from plastic material or integrally molded with the box body.

8. A shell structure, characterized in that, The device includes: a housing, wherein the periphery of the housing has a recess for accommodating a replaceable corner protector assembly as described in any one of claims 1-7, and the housing is engaged with the replaceable corner protector assembly via a self-aligning and locking structure.

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