As a commonly used electrical switch, the rocker switch (rocker switch) is widely used in a variety of equipment and applications. However, in order to ensure its reliability in harsh environments such as wet, humid or underwater, effective waterproof sealing design and testing must be carried out. In this paper, we will discuss the waterproof sealing design principles, common waterproof sealing material choices, and related testing standards for boat switches, in order to provide guidance for product design and selection.

Waterproof sealing design principle:

The waterproof sealing design of marine switches is intended to prevent external environmental factors such as water, moisture and dust from entering the switch, thereby protecting its circuitry and mechanical components from damage. The basic watertight design principles include:

Sealing design: A double or multi-layer sealing structure is used to ensure that the internal components of the switch are protected from the external environment.

Selection of sealing materials: Select sealing materials with good elasticity and corrosion resistance, such as silicone, Viton, etc., to ensure that the sealing performance is stable for a long time.

Sealing process: Adopt advanced sealing process, such as injection sealing, rubber injection sealing, etc., to ensure the tight connection between the sealing parts and the switch body, and prevent water leakage or dust infiltration.

Common waterproof sealing material options:

Silicone: Good resistance to high and low temperatures and chemical stability, suitable for sealing applications in various environments.

Fluorororubber (Fluorororubber): excellent resistance to oils, solvents and fuels, suitable for environments that require oil and water resistance.

Polyurethane: Good resistance to abrasion and corrosion, suitable for the manufacture of switch seals.

Relevant Test Standards:

The effectiveness of a watertight seal design is usually verified by a series of standardised tests, the most common of which is the IP (Ingress Protection) rating, which consists of two numbers that indicate a dust protection rating and a waterproof rating. For example, IP67 indicates that the switch is fully dustproof (first number 6) and capable of being submerged underwater for a short period of time (second number 7).

Conclusion:

The waterproof sealing design and testing standards of marine switches are a critical step in ensuring their reliable operation in a variety of harsh environments. Through proper sealing design and material selection, as well as compliance with relevant test standards, the safety and reliability of marine switches in wet, damp or underwater environments can be ensured.