A waterproof case and a sealing structure thereof

Abstract

The utility model discloses a waterproof shell and sealed structure thereof, sealed structure includes metal component, non -metal transition piece and sealing membrane, and metal component, non -metal transition piece and sealing membrane are in turn stacked and bond, wherein, the thermal expansion coefficient of non -metal transition piece is between the thermal expansion coefficient of metal component and the thermal expansion coefficient of sealing membrane. This sealed structure sets up non -metal transition piece between metal component and sealing membrane, forms multilayer transition structure of thermal expansion coefficient step -by -step transition, not only can reduce the thermal expansion coefficient disparity between two adjacent layers structure, still can reduce the heat of the bonding place metal component, further improves the bonding reliability between two adjacent layers structure. Waterproof shell includes sealed structure, outer ring and elastic pad, and the elastic pad is crimped between the outer ring and sealing membrane, can form " multi -material structure layer cooperation bonding and dynamic compensation seal " all -round sealed protection, effectively solve the peeling problem that appears when traditional metal shell and membrane body directly bond.

Description

Technical Field

[0001] This utility model relates to the field of underwater sealing technology, specifically to a waterproof shell and its sealing structure. Background Technology

[0002] For underwater photography equipment, underwater exploration equipment, underwater communication equipment, and underwater robots, ensuring underwater sealing is crucial. Currently, the most common underwater sealing structure involves directly bonding a membrane to a metal casing using adhesive. However, the thermal expansion coefficients of the metal casing, membrane, and adhesive differ significantly. Underwater products typically transition from warmer surface environments to cooler underwater environments. This repeated switching between high and low temperatures can easily cause the bond between the metal casing and the membrane to fail, even peeling off and leaking, severely impacting the product's normal operation and potentially rendering it unusable. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a sealing structure that can solve the peeling problem that occurs when the traditional metal shell is directly bonded to the membrane, and extend the service life of underwater products.

[0004] To solve the above problems, the technical solution adopted by this utility model is as follows: a sealing structure, including a metal component, a non-metallic transition component and a sealing membrane, wherein the metal component, the non-metallic transition component and the sealing membrane are stacked and bonded in sequence, wherein the coefficient of thermal expansion of the non-metallic transition component is located between the coefficient of thermal expansion of the metal component and the coefficient of thermal expansion of the sealing membrane.

[0005] Compared with the prior art, the beneficial effects of this utility model are as follows: This sealing structure sets a non-metallic transition piece between the metal component and the sealing membrane, forming a multi-layer transition structure with a progressively changing coefficient of thermal expansion. This not only reduces the difference in the coefficient of thermal expansion between adjacent layers, but also reduces the heat of the metal component at the bonding point, further improving the bonding reliability between adjacent layers. This solves the peeling problem that occurs when the traditional metal shell is directly bonded to the membrane, and extends the service life of underwater products.

[0006] In the aforementioned sealing structure, the non-metallic transition piece and the metallic component are tightly fitted together.

[0007] In the aforementioned sealing structure, the metal component is provided with a mating groove, and the non-metallic transition component is embedded in the mating groove.

[0008] In the aforementioned sealing structure, the non-metallic transition component is a plastic part.

[0009] This utility model also provides a waterproof shell, including the above-mentioned sealing structure, which has at least all the beneficial effects that the above-mentioned sealing structure can bring.

[0010] In the aforementioned waterproof shell, the metal component is a metal outer shell with a window, the non-metallic transition piece is a non-metallic frame embedded and adhered to the window sill, and the sealing film is adhered to the non-metallic frame and seals the window.

[0011] The aforementioned waterproof shell also includes an outer ring, which is pressed against the outside of the sealing membrane and fixedly connected to the metal outer shell.

[0012] The aforementioned waterproof shell also includes an elastic pad, which is pressed between the outer ring and the sealing membrane.

[0013] In the aforementioned waterproof shell, the pre-compression of the elastic pad is 0.3mm~0.8mm.

[0014] In the aforementioned waterproof shell, the elastic pad is a silicone pad.

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the waterproof shell and its sealing structure according to an embodiment of the present utility model; Figure 2 for Figure 1 Exploded view of the structure shown; Figure 3 This is a schematic diagram of the structure of the metal component according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the structure of the sealing film according to an embodiment of the present invention.

[0017] The reference numerals are as follows: 100 Metal component, 110 Mating groove, 120 Window, 130 First bonding surface, 200 Non-metallic transition part, 300 Sealing film, 310 Protrusion, 311 Second bonding surface, 320 Third bonding surface, 400 Outer ring, 500 Elastic pad. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below, with reference to Figures 1 to 4The present invention provides a sealing structure comprising a metal component 100, a non-metallic transition component 200, and a sealing film 300. The metal component 100, the non-metallic transition component 200, and the sealing film 300 are stacked and bonded in sequence. The coefficient of thermal expansion of the non-metallic transition component 200 is located between the coefficient of thermal expansion of the metal component 100 and the coefficient of thermal expansion of the sealing film 300, thereby forming a multi-layer transition structure with a progressively changing coefficient of thermal expansion.

[0019] Compared with existing technologies, this sealing structure sets a non-metallic transition piece 200 between the metal component 100 and the sealing membrane 300, forming a multi-layer transition structure with a progressively changing coefficient of thermal expansion. Through the multi-material gradient bonding structure, it can not only reduce the difference in the coefficient of thermal expansion between adjacent layers, but also reduce the heat of the metal component 100 at the bonding point, further improving the bonding reliability between adjacent layers. This solves the peeling problem that occurs when the metal shell is directly bonded to the membrane, and extends the service life of underwater products.

[0020] Furthermore, in some embodiments, the non-metallic transition member 200 and the metal member 100 are tightly fitted. Further, referring to... Figure 2 and Figure 3 The metal component 100 is provided with a mating groove 110, and the non-metallic transition piece 200 is embedded in the mating groove 110. Structural adhesive is applied between the bottom of the non-metallic transition piece 200 and the bottom wall of the mating groove 110, and the surface is smoothed to ensure that the non-metallic transition piece 200 is flush with the top surface of the metal component 100, facilitating the subsequent bonding of the sealing membrane 300. This sealing structure employs a two-stage progressive sealing mechanism: the primary stage involves a tight fit between the non-metallic transition piece 200 and the metal component 100, and the secondary stage involves an adhesive fit between the non-metallic transition piece 200 and the sealing membrane 300. This two-stage progressive sealing mechanism effectively solves the peeling problem that occurs when the metal shell and membrane are directly bonded in traditional methods.

[0021] Furthermore, the sealing film 300 can be adhered only to the non-metallic transition piece 200, or it can be partially adhered to the non-metallic transition piece 200 and partially adhered to the metal component 100.

[0022] Furthermore, the metal component 100 can be an aluminum alloy component or a stainless steel component, etc., while the non-metallic transition component 200 is a plastic component, such as an ABS component or a PC component, to facilitate embedding into the metal component 100, making it easy to mold, resulting in a high product qualification rate, and facilitating mass production. The sealing film 300 can be made of PET film or PETG film, etc.

[0023] An embodiment of this utility model also provides a waterproof shell, including the sealing structure described above, which has at least all the beneficial effects that the sealing structure described above can bring.

[0024] Furthermore, referring to Figure 2 and Figure 3 The metal component 100 is a metal shell with a window 120. The non-metallic transition component 200 is a non-metallic frame adhered to the window sill. The sealing film 300 is adhered to the non-metallic frame and seals the window 120. In this embodiment, the metal shell can serve as the shell for underwater products. The underwater product's detection devices, acquisition devices, and other structures can be placed inside the metal shell, and external information can be detected or acquired through the window 120. For example, when conducting underwater photography, a mobile phone, camera, or other structure can be placed inside the metal shell, and the lens can capture images of the external scene through the window 120. The sealing film 300 adhered to the window sill can seal and protect the underwater product to prevent water seepage from affecting the internal structure.

[0025] Furthermore, in this waterproof casing, the sealing membrane 300 is partially bonded to the non-metallic transition piece 200, and partially bonded to the metallic component 100. Furthermore, a first bonding surface 130 is provided on the inner periphery of the window 120, as shown in the reference... Figure 4 The sealing film 300 has a protrusion 310 at its bottom, and a second adhesive surface 311 is provided on the outer periphery of the protrusion 310. The second adhesive surface 311 can be bonded to the first adhesive surface 130. The portion of the bottom of the sealing film 300 surrounding the protrusion 310 has a third adhesive surface 320. The third adhesive surface 320 can be bonded to the non-metallic transition member 200. At the same time, the third adhesive surface 320 can also be bonded to the portion of the metal component 100 that is flush with the non-metallic transition member 200, thereby improving the reliability and sealing performance of the bonding joint.

[0026] Furthermore, continue to refer to Figure 1 and Figure 2 The waterproof housing also includes an outer ring 400, which is pressed against the outside of the sealing membrane 300 and fixedly connected to the metal shell. The outer ring 400 is fixedly installed on the window sill of the metal shell by screws and other structures, which can press the sealing membrane 300 tightly and improve the adhesion reliability of the sealing membrane 300. At the same time, decorative structures can also be set on the outer ring 400 to improve the overall aesthetics of the waterproof housing.

[0027] Furthermore, this waterproof shell also includes an elastic pad 500, which can be made of silicone or similar materials. The elastic pad 500 is pressed between the outer ring 400 and the sealing membrane 300, and the pre-compression of the elastic pad 500 is 0.3mm to 0.8mm. Furthermore, the coefficient of thermal expansion of the elastic pad 500 is lower than that of the sealing membrane 300. Through a multi-layered, progressively transitioning structure, the heat of the metal component 100 can be effectively reduced by more than 60%. In this waterproof shell, a three-stage progressive sealing mechanism is adopted. The primary stage is a tight fit between the non-metallic transition piece 200 and the metal component 100; the secondary stage is an adhesive fit between the non-metallic transition piece 200 and the sealing membrane 300; and the tertiary stage is a dynamic compensation fit where the outer ring 400 presses against the elastic pad 500. Through this three-stage progressive sealing mechanism, a comprehensive sealing protection of "multi-material structural layer synergistic adhesion and dynamic compensation sealing" can be formed, effectively solving the peeling problem that occurs when the metal shell and membrane are directly bonded.

[0028] It should be noted that in the description of this utility model, any descriptions of orientation, such as up, down, front, back, left, right, etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and should not be construed as a limitation of this utility model.

[0029] In the description of this utility model, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is mentioned, it is only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A sealing structure, characterized in that, The device includes a metal component (100), a non-metallic transition component (200), and a sealing film (300), wherein the metal component (100), the non-metallic transition component (200), and the sealing film (300) are stacked and bonded in sequence, wherein the coefficient of thermal expansion of the non-metallic transition component (200) is between the coefficient of thermal expansion of the metal component (100) and the coefficient of thermal expansion of the sealing film (300).

2. The sealing structure according to claim 1, characterized in that, The non-metallic transition piece (200) and the metallic component (100) are tightly fitted together.

3. The sealing structure according to claim 2, characterized in that, The metal component (100) is provided with a mating groove (110), and the non-metallic transition component (200) is embedded in the mating groove (110).

4. The sealing structure according to claim 1, characterized in that, The non-metallic transition part (200) is a plastic part.

5. A waterproof shell, characterized in that, Includes the sealing structure as described in any one of claims 1-4.

6. The waterproof shell according to claim 5, characterized in that, The metal component (100) is a metal shell with a window (120). The non-metallic transition piece (200) is a non-metallic frame embedded and adhered to the window sill. The sealing film (300) is adhered to the non-metallic frame and seals the window (120).

7. The waterproof shell according to claim 6, characterized in that, It also includes an outer ring (400), which is pressed against the outside of the sealing membrane (300) and fixedly connected to the metal shell.

8. The waterproof shell according to claim 7, characterized in that, It also includes an elastic pad (500) that is pressed between the outer ring (400) and the sealing film (300).

9. The waterproof shell according to claim 8, characterized in that, The preload of the elastic pad (500) is 0.3mm~0.8mm.

10. The waterproof shell according to claim 8 or 9, characterized in that, The elastic pad (500) is a silicone pad.

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