Multi-contoured metal TPU protective sleeve

Abstract

This utility model relates to the field of metal protective sleeve technology, specifically a versatile metal TPU protective sleeve. The main body consists of four hinged sandwich panels. One end of each sandwich panel has a rotating convex plate, and the other end has a rotating groove. The rotating convex plate is embedded in the rotating groove of the adjacent panel, and a rotating pin passes through to fix it, forming a deformable sandwich sleeve. The outer side of the sandwich panel has an outer locking groove, and the inner side has an inner locking groove. A flexible inner sleeve is attached to the inner side of the sandwich sleeve, and an outer sleeve is attached to the outer side; both are of equal thickness and thinner than the sandwich sleeve. Four outer locking blocks protrude from the outer side of the inner sleeve and are embedded in the inner locking groove and glued in place. Four inner locking blocks protrude from the inner side of the outer sleeve and are embedded in the outer locking groove and glued in place. Each locking block and each locking groove provides double locking to prevent slippage. The hinged structure allows the sleeve to adapt to complex shapes, and the inner and outer sleeves enhance impact resistance, torsion resistance, and overall stability. The inner sleeve ensures a seamless fit to the metal surface. This utility model achieves a balance between deformation adaptability and stable protection.

Description

Technical Field

[0001] This utility model relates to the field of metal protective case technology, specifically to multi-shaped metal TPU protective cases. Background Technology

[0002] During the operation of mechanical equipment, its key metal components (such as shafts, rods, connectors, or frame structures) often have cylindrical, elliptical, square, polygonal, or more complex irregular geometric shapes. These parts are exposed to the risks of bumps, scratches, impacts, or environmental corrosion during equipment operation, installation, commissioning, or daily maintenance, which can easily lead to component damage or performance degradation. To address this issue, effective protection needs to be applied to specific locations. Therefore, using thermoplastic polyurethane (TPU) material to make protective sleeves has proven to be a reliable solution. TPU material has excellent wear resistance, oil resistance, high elasticity, and good impact resistance and cushioning performance, which can effectively isolate external damage. However, due to the diverse cross-sectional shapes and sizes of different metal components, metal TPU protective sleeves with various shapes are needed to achieve comprehensive and targeted collision protection for key stress points, edges, or vulnerable surfaces of metal components.

[0003] However, due to the diverse cross-sectional shapes and sizes of the protected metal components, the adaptability of a single standard cross-section sheath is poor. It is often difficult to fit closely to various shapes or adapt to these non-standard forms, thus failing to fit closely to irregular metal surfaces, leading to the risk of protection failure. Furthermore, when traditional soft TPU sheaths adopt an integrated injection molding structure, they are prone to uncontrollable plastic deformation and loss of protective function after bending due to the lack of layered support. Summary of the Invention

[0004] The purpose of this invention is to provide a versatile metal TPU protective case to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A versatile metal TPU protective case includes four interlocking sandwich panels. One end of each sandwich panel has a raised center forming a rotating convex plate, while the other end has an indented center forming a rotating groove. The rotating convex plate of each sandwich panel is embedded in the rotating groove of the adjacent sandwich panel. Rotating pins pass through the connection points of the rotating grooves and rotating convex plates to form a hinged connection between the sandwich panels. After the four sandwich panels are hinged and fixed, they form a sandwich protective case.

[0007] Preferably, the outer side of the sandwich panel is provided with an outer slot, and the inner side of the sandwich panel is provided with an inner slot.

[0008] Preferably, an inner sheath is attached to the inner side of the sandwich sheath formed by hinged and fixed four sandwich panels, and an outer sheath is attached to the outer side of the sandwich sheath formed by hinged and fixed four sandwich panels.

[0009] Preferably, the wall thickness of the inner sheath is the same as that of the outer sheath, and the wall thickness of the inner and outer sheaths is less than the wall thickness of the sandwich sheath formed by hinged and fixed four sandwich sheath plates.

[0010] Preferably, the inner sheath has four outer locking blocks that are spaced apart on the radially outer side, and the outer locking blocks are respectively embedded in the inner locking groove and glued and fixed.

[0011] Preferably, the outer sheath has four inner locking blocks that are spaced apart on its radially inner side, and the inner locking blocks are respectively embedded in the outer locking groove and glued and fixed.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This versatile metal TPU protective case, formed by four hinged sandwich panels, can be flexibly deformed and dynamically adjusted to the curvature of the protected metal surface, solving the problem of traditional one-piece protective cases not fitting tightly to the metal surface after deformation.

[0014] This versatile metal TPU protective case is fixed by the inner and outer sheaths to the interlayer sheaths through slots and blocks, which limits the risk of displacement of the interlayer sheaths at the hinges and prevents slippage or detachment of the layers due to deformation, thus maintaining the overall structural stability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the inner and outer sheaths of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the sandwich sheath of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the sandwich panel of this utility model.

[0019] In the figure: 101, sandwich panel; 102, rotating convex plate; 103, rotating groove; 104, rotating pin; 105, sandwich sleeve; 106, outer slot; 107, inner slot; 108, inner sleeve; 109, outer sleeve; 110, outer block; 111, inner block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-4 As shown, this utility model provides a technical solution:

[0022] A versatile metal TPU protective case includes four interlocking sandwich panels 101. One end of each sandwich panel 101 has a raised center forming a rotating convex plate 102, and the other end of each sandwich panel 101 has an indented center forming a rotating groove 103. The rotating convex plate 102 of each sandwich panel 101 is respectively embedded in the rotating groove 103 of the adjacent sandwich panel 101. The connection between the rotating groove 103 and the rotating convex plate 102 is respectively connected by a rotating pin 104 to form a hinged connection between the sandwich panels 101. After the four sandwich panels 101 are hinged and fixed, they form a sandwich cover 105.

[0023] The above scheme uses four interlocking sandwich panels to form the main support structure of the protective sleeve. The rotating convex plate at one end of the sandwich panel can cooperate with the rotating groove at the other end of the sandwich panel to form a rotatable connection base. The rotating convex plate can be embedded in the rotating groove of the adjacent sandwich panel to allow relative rotation between the adjacent sandwich panels. The rotating pin can be inserted through the connection between the rotating groove and the rotating convex plate to fix the adjacent sandwich panels in the rotatable connection position. The four sandwich panels are hinged and fixed to form the core skeleton of the sandwich sleeve with deformation capability.

[0024] In this embodiment, preferably, the outer side of the sandwich panel 101 is provided with an outer slot 106, and the inner side of the sandwich panel 101 is provided with an inner slot 107.

[0025] The above solution allows for the use of an outer slot on the outside of the sandwich panel for positioning and engaging with outer components, and an inner slot on the inside of the sandwich panel for positioning and engaging with inner components.

[0026] In this embodiment, preferably, an inner sheath 108 is attached to the inner side of the sandwich sheath 105 formed by hinged and fixed four sandwich sheath plates 101, and an outer sheath 109 is attached to the outer side of the sandwich sheath 105 formed by hinged and fixed four sandwich sheath plates 101.

[0027] The above scheme provides a flexible bonding layer between the interlayer sheath and the protected metal surface by attaching an inner sheath to the inside of the interlayer sheath, and provides a constraint layer outside the interlayer sheath by attaching an outer sheath to the outside of the interlayer sheath.

[0028] In this embodiment, preferably, the wall thickness of the inner sheath 108 is the same as that of the outer sheath 109, and the wall thicknesses of the inner sheath 108 and the outer sheath 109 are less than the wall thickness of the sandwich sheath 105 formed by hinged and fixed four sandwich sheath plates 101.

[0029] The above scheme maintains the overall symmetry and balance of the sheath by ensuring that the inner and outer sheaths have the same wall thickness. By making the wall thicknesses of the inner and outer sheaths smaller than that of the sandwich sheath, the strength of the sandwich sheath as the main structure can be guaranteed, while also taking into account the flexibility of the inner and outer sheaths.

[0030] In this embodiment, preferably, the inner sheath 108 has four outer locking blocks 110 protruding at intervals on its radial outer side, and the outer locking blocks 110 are respectively embedded in the inner locking groove 107 and glued and fixed.

[0031] With the above scheme, the four outer locking blocks that protrude radially and at intervals on the outer side of the inner sheath can correspond to the inner locking grooves on the inner side of the interlayer sheath. By embedding the outer locking blocks into the inner locking grooves, the inner sheath can be precisely fixed in the position inside the interlayer sheath. By gluing, chemical bonding can be added on the basis of mechanical fitting to prevent the inner sheath from detaching from the interlayer sheath.

[0032] In this embodiment, preferably, the outer sheath 109 has four inner locking blocks 111 protruding at intervals on its radially inner side, and the inner locking blocks 111 are respectively embedded in the outer locking groove 106 and glued and fixed.

[0033] With the above scheme, four inner locking blocks protruding radially on the inner side of the outer sheath can correspond to the outer locking groove on the outer side of the interlayer sheath. By embedding the inner locking blocks into the outer locking groove, the outer sheath can be precisely fixed on the outer side of the interlayer sheath. By gluing, chemical bonding can be added on the basis of mechanical fitting to prevent the outer sheath from detaching from the interlayer sheath.

[0034] In this embodiment, the multi-shaped metal TPU protective case has a core structure consisting of four interlocking sandwich panels 101. Each sandwich panel 101 has a rotating protrusion 102 at one end and a rotating groove 103 at the opposite end. During assembly, the rotating protrusion 102 of each sandwich panel 101 is embedded in the rotating groove 103 of the adjacent sandwich panel 101, and is hinged and fixed by a rotating pin 104 that passes through the connection between the rotating groove 103 and the rotating protrusion 102. After the four sandwich panels 101 are hinged and fixed in this way, they together form a flexible sandwich cover 105 body. This hinge design allows the sandwich cover 105 to bend and twist as a whole to adapt to different curved surfaces or shape requirements, enhancing the applicability and flexibility of the protective case.

[0035] To further enhance the protective effect and structural stability, an inner sheath 108 is attached to the inner side of the sandwich sheath 105 formed by the hinged joint of the sandwich protective plate 101, and an outer sheath 109 is attached to the outer side of it. The inner sheath 108 is flexible and can fit tightly against the protected metal surface, making up for the problem of insufficient contact between the sandwich sheath 105 and the metal surface at the hinge deformation point, ensuring that there are no blind spots in the protection. The outer sheath 109 forms an external fit with the inner sheath 108, and together they constrain the middle sandwich sheath 105. This dual constraint effect significantly enhances the overall structural strength of the sandwich sheath 105, effectively prevents excessive displacement or detachment at its hinge point during use, and improves the overall impact resistance and torsional resistance.

[0036] To ensure a tight fit between the inner sheath 108, outer sheath 109, and interlayer sheath 105 and prevent slippage, a specialized fixing structure is designed. An inner groove 107 is provided on the inner side of the interlayer sheath 101, and four outer locking blocks 110 protrude radially outward from the inner sheath 108 at intervals. Each outer locking block 110 is embedded into an inner groove 107 and fixed by adhesive bonding. Correspondingly, an outer groove 106 is provided on the outer side of the interlayer sheath 101, and four inner locking blocks 111 protrude radially inward from the outer sheath 109 at intervals. Each inner locking block 111 is embedded into an outer groove 106 and fixed by adhesive bonding as well. This precise embedding and adhesive bonding design of the locking blocks and grooves provides a strong mechanical engagement and adhesive force, eliminating the risk of slippage that may occur between the inner sheath 108, interlayer sheath 105, and outer sheath 109 during use, ensuring the overall stability of the multi-layer structure, and thus maintaining the effectiveness of the protective function under any deformation state.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A versatile metal TPU protective case, comprising four interlocking sandwich panels (101), characterized in that: One end of the sandwich panel (101) has a raised center to form a rotating convex plate (102), and the other end of the sandwich panel (101) is recessed to form a rotating groove (103). The rotating convex plate (102) of each sandwich panel (101) is embedded in the rotating groove (103) of the adjacent sandwich panel (101). The connection between the rotating groove (103) and the rotating convex plate (102) is respectively connected by a rotating pin (104) to form a hinged fixation between the sandwich panels (101). After the four sandwich panels (101) are hinged and fixed, they form a sandwich sleeve (105).

2. The versatile metal TPU protective case according to claim 1, characterized in that: The outer side of the sandwich panel (101) is provided with an outer slot (106), and the inner side of the sandwich panel (101) is provided with an inner slot (107).

3. The versatile metal TPU protective case according to claim 2, characterized in that: An inner sheath (108) is attached to the inner side of the sandwich sheath (105) formed by hinged and fixed four sandwich sheaths (101), and an outer sheath (109) is attached to the outer side of the sandwich sheath (105) formed by hinged and fixed four sandwich sheaths (101).

4. The versatile metal TPU protective case according to claim 3, characterized in that: The wall thickness of the inner sheath (108) is the same as that of the outer sheath (109), and the wall thicknesses of the inner sheath (108) and the outer sheath (109) are respectively less than the wall thickness of the sandwich sheath (105) formed by hinged and fixed by four sandwich sheaths (101).

5. The versatile metal TPU protective case according to claim 4, characterized in that: The inner sheath (108) has four outer locking blocks (110) that are spaced apart on the radial outer side. The outer locking blocks (110) are respectively embedded in the inner locking groove (107) and glued and fixed.

6. The versatile metal TPU protective case according to claim 5, characterized in that: The outer sheath (109) has four inner locking blocks (111) that are spaced apart on the radial inner side. The inner locking blocks (111) are respectively embedded in the outer locking groove (106) and glued and fixed.

Images