Shockproof sealing strip for electronic appliances

Abstract

The utility model relates to sealing strip technical field, concretely is a kind of shock resistance sealing strip for electronic appliance, the composite material of silicon rubber main part and polyurethane shock resistance layer, through the synergistic effect of material of different elastic modulus, the attenuation of broadband vibration is realized. The elastic deformation capacity of phosphor bronze spring post can absorb vibration energy below 2000Hz, and the damping characteristic of polyurethane cavity is remarkable to low-frequency vibration (10~50Hz) buffering effect, the composite material of silicon rubber main part and polyurethane shock resistance layer, through the synergistic effect of material of different elastic modulus, the attenuation of broadband vibration is realized. The elastic deformation capacity of phosphor bronze spring post can absorb vibration energy below 2000Hz, and the damping characteristic of polyurethane cavity is remarkable to low-frequency vibration (10~50Hz) buffering effect.

Description

Technical Field

[0001] This utility model relates to the field of sealing strip technology, specifically to a shock-resistant sealing strip for electronic appliances. Background Technology

[0002] Electronic and electrical equipment is often subjected to vibration during operation. Traditional sealing strips, mostly made of a single rubber material, lack sufficient shock absorption performance and are prone to gaps due to vibration, allowing dust and moisture to enter the equipment and affect circuit stability. Furthermore, existing sealing strips have a simple structure and poor fit with the equipment installation location, making them prone to falling off under vibration, thus failing to meet the high reliability sealing requirements of electronic and electrical equipment. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a shock-resistant sealing strip for electronic appliances.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a shock-resistant sealing strip for electronic appliances, comprising a base body, a protrusion at the upper end of the base body, limiting grooves on both sides of the protrusion, a supporting frame inside the base body and the protrusion, a shock-resistant layer on the outer wall of the base body and the protrusion, and multiple cavities inside the shock-resistant layer, with shock-absorbing spring columns inside the cavities.

[0007] Furthermore, an improvement of this utility model is that the base body and the protrusion are an integrated structure.

[0008] Furthermore, an improvement of this utility model is that the shock-absorbing spring column is a cylindrical structure.

[0009] Furthermore, an improvement of this utility model is that an anti-corrosion layer is provided on the outer wall of the earthquake-resistant layer.

[0010] Furthermore, an improvement of this utility model is that a conductive shielding layer is provided between the outer wall of the base body and the protrusion and the inner wall of the shock-resistant layer.

[0011] (III) Beneficial Effects

[0012] Compared with the prior art, this utility model provides a shock-resistant sealing strip for electronic appliances, which has the following beneficial effects:

[0013] The composite material of silicone rubber body and polyurethane anti-vibration layer achieves broadband vibration attenuation through the synergistic effect of materials with different elastic moduli. The elastic deformation capability of phosphor bronze spring column can absorb vibration energy below 2000Hz, while the damping characteristics of polyurethane cavity have a significant buffering effect on low-frequency vibration (10-50Hz).

[0014] The support frame can withstand long-term dynamic loads without plastic deformation. Combined with the aging resistance of silicone rubber, the service life of the sealing strip is extended to more than 10 years, making it suitable for coastal or industrial corrosion environments. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This utility model Figure 1 The main view;

[0017] Figure 3 This is a cross-sectional view of the base body in this utility model;

[0018] Figure 4 This is a cross-sectional view of the seismic-resistant layer in this utility model;

[0019] In the diagram: 1. Base body; 2. Protrusion; 3. Support frame; 4. Limiting groove; 5. Seismic layer; 6. Cavity; 7. Shock-absorbing spring column; 8. Conductive shielding layer; 9. Anti-corrosion layer. 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 This utility model discloses a shock-resistant sealing strip for electronic appliances, including a base body 1, a protrusion 2 at the upper end of the base body 1, limiting grooves 4 on both sides of the protrusion 2, a support frame 3 inside the base body 1 and the protrusion 2, a shock-resistant layer 5 on the outer wall of the base body 1 and the protrusion 2, a plurality of cavities 6 inside the shock-resistant layer 5, and shock-absorbing spring columns 7 inside the cavities 6.

[0022] The base body 1 and the protrusion 2 are an integrated structure.

[0023] The shock-absorbing spring column 7 is a cylindrical structure.

[0024] 1. Main structure formation:

[0025] Material: The base body 1 and the protrusion 2 are integrally cast with silicone rubber, and the Shore hardness is controlled at 60±5A. Silicone rubber has the characteristics of high and low temperature resistance (-50℃~200℃), which can adapt to the complex working environment of electronic and electrical equipment. At the same time, its excellent elastic deformation ability can ensure the sealing fit under long-term use.

[0026] Limiting groove 4 design: The edge of the groove is coated with thermoplastic elastomer (TPE) with a hardness of 45±5A to enhance the frictional damping with the equipment slot and prevent loosening under vibration.

[0027] 2. Supporting skeleton 3 embedded:

[0028] Frame material: 304 stainless steel sheet (thickness adapted to structural requirements), with nickel plating for rust prevention. The high strength and rigidity of stainless steel effectively resist structural deformation caused by vibration, while the nickel plating enhances oxidation resistance, preventing frame corrosion from affecting the overall performance of the sealing strip.

[0029] 3. The seismic-resistant layer 5 is wrapped and formed:

[0030] Earthquake-resistant layer 5 is made of polyurethane elastomer (PU) injection molding. Its density is adjusted according to the design of cavity 6, providing both elastic buffering and structural support. The high damping properties of PU material absorb vibration energy and reduce resonance effects.

[0031] 4. Installation of vibration damping components:

[0032] Vibration damping spring post 7 is made of phosphor bronze (containing 6%–8% tin), which undergoes heat treatment to improve its elastic limit. The excellent elasticity and fatigue resistance of phosphor bronze ensure that the spring post can work stably for a long time under high-frequency vibration. The surface silver plating treatment can enhance its oxidation resistance and conductivity (if grounding is required).

[0033] 5. Functional layer composite processing:

[0034] The outer wall of the earthquake-resistant layer 5 is provided with an anti-corrosion layer 9.

[0035] A conductive shielding layer 8 is provided between the outer wall of the base body 1 and the protrusion 2 and the inner wall of the shock-resistant layer 5.

[0036] Anti-corrosion layer 9: The outer wall is coated with a polytetrafluoroethylene (PTFE) coating of uniform thickness. PTFE has excellent chemical corrosion resistance and can resist the erosion of media such as oil, acids and alkalis. At the same time, its low coefficient of friction makes it easy to clean and maintain.

[0037] The conductive shielding layer is made of tin-plated copper mesh (mesh count adapted to electromagnetic shielding requirements) coated with conductive adhesive (silver-based adhesive). The high conductivity of the tin-plated copper mesh enables the construction of a complete electromagnetic shielding system, while the conductive adhesive ensures a low-impedance connection between the shielding layer and the equipment grounding terminal.

[0038] The electromagnetic shielding effectiveness of the tin-plated copper mesh shielding layer is ≥60dB (100MHz~1GHz), meeting the EMC standards for electronic and electrical equipment; the combination of silicone rubber body and TPE overlay ensures uniform pressure distribution between the sealing surface and the equipment, and the waterproof rating can reach IP67.

[0039] In the description herein, it should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A shock-resistant sealing strip for electronic appliances, comprising a base body (1), a protrusion (2) at the upper end of the base body (1), and limiting grooves (4) on both sides of the protrusion (2), characterized in that: The base body (1) and the protrusion (2) are provided with a support frame (3). The base body (1) and the protrusion (2) are provided with an anti-seismic layer (5) on their outer walls. The anti-seismic layer (5) is provided with multiple cavities (6) inside, and shock-absorbing spring columns (7) are provided in the cavities (6).

2. The shock-resistant sealing strip for electronic appliances according to claim 1, characterized in that: The base body (1) and the protrusion (2) are an integrated structure.

3. The shock-resistant sealing strip for electronic appliances according to claim 2, characterized in that: The shock-absorbing spring column (7) is a cylindrical structure.

4. The shock-resistant sealing strip for electronic appliances according to claim 3, characterized in that: The outer wall of the earthquake-resistant layer (5) is provided with an anti-corrosion layer (9).

5. A shock-resistant sealing strip for electronic appliances according to claim 4, characterized in that: A conductive shielding layer (8) is provided between the outer wall of the base body (1) and the protrusion (2) and the inner wall of the anti-seismic layer (5).

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