A waterproof rubber ring for a mobile phone card holder

Abstract

The utility model discloses a waterproof rubber ring of mobile phone card holder, including base layer, self -adaptation expansion layer and surface micro -convex layer, base layer is annular silica gel main part, and the inner edge is equipped with the stepped clamping groove, self -adaptation expansion layer is compound in base layer outside, is by the water -swelling rubber material constitution, surface micro -convex layer covers the rubber ring outer surface, and is distributed with array formula conical convex, and base layer is annular silica gel main part and is equipped with the stepped clamping groove, provides stable structure support, can steady embeds card holder clamping groove, and the degree of adhesion is strengthened, prevents the drop displacement, and guarantees waterproof reliability. Self -adaptation expansion layer is made of water -swelling rubber, and water -swelling rubber expands rapidly when meeting water, fills up the tiny gap between rubber ring and card holder, mobile phone shell, forms the sealing layer, and the array formula conical convex of surface micro -convex layer forms multiple point contact when contacting, increases friction, prevents moisture sliding penetration, cooperatively constructs multiple waterproof system, significantly improves waterproof performance, effectively protects the internal element of mobile phone.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone accessories technology, specifically a waterproof rubber ring for a mobile phone SIM card tray. Background Technology

[0002] With the rapid development of smartphone technology, consumers' demands for mobile phone performance are also increasing, among which waterproof performance has become an important consideration. In the structure of a mobile phone, the SIM card tray, as a component that is frequently inserted and removed, directly affects the overall waterproof rating of the phone.

[0003] Traditional waterproof solutions for SIM card trays typically use rubber or silicone rings for sealing. However, rubber rings are prone to aging and instability, and their waterproof performance gradually deteriorates over time. While silicone rings are more stable than rubber rings, they can still allow moisture to penetrate due to incomplete sealing in extreme environments or prolonged immersion.

[0004] Furthermore, most existing waterproof gaskets for SIM card trays use fixed sizes and structures, making it difficult to adapt to the varying waterproof performance requirements of different phone models or usage environments. For example, under certain extreme weather conditions, phones may face greater water pressure challenges, and traditional fixed-size waterproof gaskets may not provide sufficient sealing force. Summary of the Invention

[0005] In order to overcome the shortcomings of existing technical solutions, this utility model provides a waterproof rubber ring for mobile phone card trays, which can effectively solve the problem that traditional fixed-size waterproof rubber rings may not be able to provide sufficient sealing force.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a waterproof rubber ring for a mobile phone SIM card tray, comprising a base layer, an adaptive expansion layer and a surface micro-protrusion layer; the base layer is an annular silicone body with a stepped snap-fit ​​groove on the inner edge; the adaptive expansion layer is composited on the outside of the base layer and is composed of a water-swellable rubber material; the surface micro-protrusion layer covers the outer surface of the rubber ring and has an array of conical protrusions distributed thereon.

[0007] Furthermore, the stepped snap-fit ​​groove includes three receiving surfaces with a height difference of 0.1-0.3mm, and the receiving surfaces at each level are transitioned by a 45° slope.

[0008] Furthermore, the thickness of the adaptive expansion layer is 1 / 5 to 1 / 3 of the thickness of the substrate layer, and its expansion rate is controlled within the range of 150% to 200%.

[0009] Furthermore, the conical protrusion has a height of 0.05-0.1 mm, a bottom diameter of 0.1-0.15 mm, and a center-to-center distance between adjacent protrusions of 0.2-0.3 mm.

[0010] Furthermore, the substrate layer is embedded with an annular stainless steel skeleton, the cross-section of which is an "I" shaped structure.

[0011] Furthermore, the stainless steel frame is provided with anti-rotation protrusions on both sides, which are evenly distributed at a spacing of 90°.

[0012] Compared with existing technologies, the beneficial effects of this utility model are as follows: the substrate layer is a ring-shaped silicone body, providing the basic shape and mechanical support for the rubber ring, ensuring that the rubber ring can be stably embedded in the card slot of the mobile phone tray. The stepped card slot design on the inner edge enhances the fit between the rubber ring and the card tray, preventing the rubber ring from falling off or shifting during use, and ensuring the reliability of waterproof performance.

[0013] The adaptive expansion layer is made of water-swellable rubber material. When the rubber ring comes into contact with water, the expansion layer will quickly absorb water and expand, filling the tiny gaps between the rubber ring and the card tray and the phone casing, forming a tight sealing layer. The adaptive properties of the expansion layer enable it to cope with humidity changes in different environments. Even if a tiny gap appears between the rubber ring and the card tray after long-term use, the expansion layer can restore its sealing performance through expansion.

[0014] The surface micro-protrusion layer is covered with an array of conical protrusions. These protrusions can form multi-point contact when the rubber ring comes into contact with the card tray and the phone casing, increasing the friction of the contact surface and preventing water from sliding through the surface. The conical protrusion design can also form tiny drainage channels on the surface of the rubber ring, so that water is quickly guided when it comes into contact with the rubber ring, reducing the time that water stays on the surface of the rubber ring and further reducing the risk of water leakage.

[0015] The synergistic effect of the substrate layer, the adaptive expansion layer, and the surface micro-protrusion layer forms a multi-layer waterproof system from structural support and dynamic sealing to surface protection, which significantly improves the waterproof performance of the SIM card tray. The rubber ring design can adapt to humidity changes and mechanical stress in different environments, ensuring reliable waterproof performance in various usage scenarios. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural view of the present invention;

[0017] Figure 2 This is a top view of the structure of this utility model;

[0018] Figure 3 This is a cross-sectional view of the structure of this utility model.

[0019] Numbering on the map:

[0020] 1-Base layer, 2-Adaptive expansion layer, 3-Surface micro-protrusion layer, 11-Stepped snap-fit ​​groove, 12-Stainless steel skeleton, 31-Conical protrusion, 121-Anti-rotation protrusion. Detailed Implementation

[0021] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0022] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. This disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this disclosure. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure. Example

[0023] like Figure 1-3 As shown, this utility model provides a waterproof rubber ring for a mobile phone SIM card tray, including a base layer 1, an adaptive expansion layer 2, and a surface micro-protrusion layer 3; the base layer 1 is an annular silicone body with a stepped snap-fit ​​groove 11 on the inner edge; the adaptive expansion layer 2 is composited on the outside of the base layer 1 and is made of water-swellable rubber material; the surface micro-protrusion layer 3 covers the outer surface of the rubber ring and has an array of conical protrusions 31 distributed thereon.

[0024] The substrate layer 1 is a ring-shaped silicone body, providing the basic shape and mechanical support for the rubber ring, ensuring that the rubber ring can be stably embedded in the card slot of the phone tray. The stepped card slot 11 on the inner edge enhances the fit between the rubber ring and the card tray, preventing the rubber ring from falling off or shifting during use, and ensuring the reliability of waterproof performance.

[0025] The adaptive expansion layer 2 is made of water-swellable rubber material. When the rubber ring comes into contact with water, the expansion layer will quickly absorb water and expand, filling the tiny gaps between the rubber ring and the card tray and the phone casing, forming a tight sealing layer. The adaptive properties of the expansion layer enable it to cope with humidity changes in different environments. Even if a tiny gap appears between the rubber ring and the card tray after long-term use, the expansion layer can restore its sealing performance through expansion.

[0026] The surface micro-protrusion layer 3 is covered with an array of conical protrusions 31. When the rubber ring contacts the card tray and the phone casing, these protrusions can form multi-point contact, increase the friction of the contact surface, and prevent water from sliding through the surface. The design of the conical protrusions 31 can also form tiny drainage channels on the surface of the rubber ring, so that water is quickly guided when it contacts the rubber ring, reducing the time that water stays on the surface of the rubber ring and further reducing the risk of water seepage.

[0027] The synergistic effect of the substrate layer 1, the adaptive expansion layer 2, and the surface micro-protrusion layer 3 forms a multi-layer waterproof system from structural support and dynamic sealing to surface protection, which significantly improves the waterproof performance of the SIM card tray. The rubber ring design can adapt to humidity changes and mechanical stress in different environments, ensuring reliable waterproof performance in various usage scenarios.

[0028] See Figure 1 and Figure 3 The stepped snap-fit ​​groove 11 includes three bearing surfaces with a height difference of 0.1-0.3mm, and the bearing surfaces of each level are transitioned by a 45° slope.

[0029] The three-tiered contact surface, distributed at varying heights, creates a multi-level interlocking structure between the rubber ring and the clip. Each contact surface provides independent support, distributing interlocking stress and preventing deformation or detachment of the rubber ring due to excessive stress on a single contact surface. The 0.1-0.3mm height difference ensures a tight connection without causing assembly difficulties or localized stress concentration due to excessive height differences. This design enhances ease of assembly while maintaining a seal.

[0030] The three-level bonding surface and the card holder form multiple sealing lines, and each level of bonding surface can independently block water penetration, forming redundant protection.

[0031] The 45° beveled transition design allows the rubber ring to smoothly embed into the holder during assembly, reducing frictional resistance and avoiding stress concentration and sealing surface damage caused by right-angle transitions. The bevel also provides some deformation space when the rubber ring expands, enhancing the adaptability of the seal.

[0032] The thickness of the adaptive expansion layer 2 is 1 / 5 to 1 / 3 of the thickness of the substrate layer 1, and its expansion rate is controlled within the range of 150% to 200%.

[0033] The thickness of the expansion layer is 1 / 5 to 1 / 3 of that of the base layer 1. This ensures that the expansion layer has sufficient expansion space when exposed to water, without weakening the structural support capacity of the base layer 1 due to excessive thickness. As the main structure, the base layer 1 needs to maintain sufficient strength and rigidity, while the expansion layer focuses on improving sealing performance.

[0034] The expansion rate is controlled within the range of 150%-200%, which ensures that the expansion layer expands rapidly when it comes into contact with water, fills the gaps, and forms a tight sealing layer, while preventing the rubber ring from deforming or breaking due to excessive expansion.

[0035] The expansion layer expands upon contact with water, filling tiny gaps between the rubber ring, the SIM card tray, and the phone casing to create a dynamic seal. With an expansion rate of 150%-200%, the expansion layer ensures it fully fills these gaps. Even after prolonged use, if minor gaps appear between the rubber ring and the SIM card tray, the expansion layer can restore its sealing performance through expansion.

[0036] See Figure 1 and Figure 2 The conical protrusion 31 has a height of 0.05-0.1mm, a bottom diameter of 0.1-0.15mm, and a center-to-center distance of 0.2-0.3mm between adjacent protrusions.

[0037] The conical protrusions 31 are distributed in an array to form multiple points of contact when the rubber ring comes into contact with the card tray and the phone casing. This increases the friction of the contact surface and reduces the possibility of moisture sliding through the surface, thereby improving the sealing effect.

[0038] The spacing between adjacent protrusions forms tiny drainage channels, allowing water to be quickly diverted when it comes into contact with the rubber ring, reducing the time water stays on the surface of the rubber ring and lowering the risk of water leakage.

[0039] The shape and spacing of the conical protrusions 31 help water slide off quickly, preventing water from accumulating on the surface of the rubber ring and further enhancing waterproof performance.

[0040] The raised array distribution can disperse external pressure, reduce local stress concentration on the surface of the rubber ring, thereby reducing the risk of wear and extending the service life of the rubber ring.

[0041] The conical protrusion 31 can undergo elastic deformation when subjected to pressure and return to its original shape after the pressure is removed. This characteristic allows the rubber ring to maintain good sealing performance during long-term use.

[0042] See Figure 3 The substrate layer 1 is embedded with an annular stainless steel skeleton 12, and the skeleton cross-section is in the shape of an "I".

[0043] The I-shaped cross-section ring frame significantly improves the bending and torsional stiffness of the rubber ring through the synergistic effect of the upper and lower flanges and the middle web. This structure can effectively resist external pressure or deformation during assembly, ensuring that the rubber ring maintains the integrity of the ring structure during long-term use and avoiding seal failure due to compression or stretching.

[0044] The high strength of the stainless steel frame 12 ensures that the rubber ring remains dimensionally stable when temperature changes or humidity fluctuations occur, preventing changes in the sealing gap caused by thermal expansion and contraction of the material, thus maintaining long-term waterproof performance.

[0045] The "I"-shaped structure of the frame evenly transmits external pressure to the upper and lower flanges through the web, making the pressure distribution on the contact surface between the rubber ring and the card tray and the mobile phone casing more uniform. This reduces local stress concentration, ensures that the sealing surface is gapless, and improves the reliability of the seal.

[0046] When the rubber ring undergoes slight deformation due to long-term use or environmental factors, the rigid support of the skeleton can limit the deformation range. At the same time, it works in conjunction with the adaptive expansion layer 2 to compensate for the sealing gap through the expansion of the expansion layer and maintain dynamic sealing performance.

[0047] See Figure 3 The stainless steel frame 12 has anti-rotation protrusions 121 on both sides, which are evenly distributed at a spacing of 90°.

[0048] The anti-rotation protrusion 121, by engaging with a corresponding groove or limiting structure inside the card tray or phone housing, forms a physical limit, preventing the rubber ring from rotating or shifting axially during assembly or use. This design ensures that the stepped locking groove 11 of the rubber ring always remains precisely aligned with the card tray, maintaining the stability of the sealing performance.

[0049] The anti-rotation protrusions 121 are evenly distributed at 90° intervals, which ensures the reliability of the limiting force while avoiding assembly difficulties or stress concentration caused by too many protrusions. This design provides sufficient limiting force while reducing the alignment difficulty during assembly and improving production efficiency.

[0050] The anti-rotation bump 121 acts as a guide during assembly, helping the rubber ring to quickly and accurately embed into the card tray or phone casing. The even distribution of the bumps ensures that the rubber ring is subjected to uniform force during assembly, reducing deformation or damage caused by improper assembly.

[0051] In the description of this utility model, it should be understood that the terms "middle", "length", "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship 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, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0052] In this invention, unless otherwise expressly specified and limited, the first feature "on" the second feature may be in direct contact with the first feature, or indirect contact with the first feature through an intermediate medium. "A plurality of" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

[0053] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0054] The above description is merely illustrative of the embodiments of this utility model and is not intended to limit the scope of this utility model. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model without creative labor should be included within the protection scope of this utility model.

Claims

1. A waterproof rubber ring for a mobile phone card holder, characterized in that, It includes a base layer, an adaptive expansion layer, and a surface micro-protrusion layer; the base layer is a ring-shaped silicone body with a stepped snap-fit ​​groove on the inner edge; the adaptive expansion layer is composited on the outside of the base layer and is made of water-swellable rubber material; the surface micro-protrusion layer covers the outer surface of the rubber ring and has an array of conical protrusions distributed thereon.

2. The waterproof rubber ring of the mobile phone card holder according to claim 1, characterized in that: The stepped snap-fit ​​groove includes three levels of bearing surfaces with a height difference of 0.1-0.3mm, and the bearing surfaces of each level are transitioned by a 45° slope.

3. The waterproof rubber ring of the mobile phone card holder according to claim 1, characterized in that: The thickness of the adaptive expansion layer is 1 / 5 to 1 / 3 of the thickness of the substrate layer, and its expansion rate is controlled within the range of 150% to 200%.

4. The waterproof rubber ring of the mobile phone card holder according to claim 1, characterized in that: The conical protrusion has a height of 0.05-0.1 mm, a bottom diameter of 0.1-0.15 mm, and a center-to-center distance of 0.2-0.3 mm between adjacent protrusions.

5. The waterproof rubber ring of the mobile phone card holder according to claim 1, characterized in that: The substrate layer is embedded with an annular stainless steel skeleton, the cross-section of which is an "I" shaped structure.

6. The waterproof rubber ring of the mobile phone card holder according to claim 5, characterized in that: The stainless steel frame has anti-rotation protrusions on both sides, which are evenly distributed at 90° intervals.

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