Supplement: Enclosures
be used and select the appropriate material to ensure the hinge’s longevity. Stainless steel is one of the most commonly used materials for hinges due to its excellent resistance to corrosion coupled with strength, and aesthetic appeal. In the electronics industry, stainless steel hinges are often chosen for enclosures exposed to harsh conditions, such as outdoor environments or industrial settings. The material’s ability to resist rust and oxidation makes it ideal for situations where exposure to moisture, chemicals, or extreme temperatures is a concern. Marine-grade stainless steel, such as 316 stainless steel, offers even greater resistance to corrosion, making it suitable for environments near saltwater or other highly corrosive settings.
Aluminium is another popular material used for electronic enclosure hinges, particularly when weight is a concern. Aluminium hinges are lightweight yet durable, which makes them ideal for portable enclosures or applications where minimizing weight is a priority. Although aluminium is not as robust as stainless steel in the harshest conditions, its corrosion resistance and low weight make it a suitable choice for lighter-duty enclosures that do not face extreme environmental stresses. Zinc-plated steel provides a cost-effective alternative to stainless steel. While it is not as durable as stainless steel, zinc-plated steel hinges offer a good balance of strength and corrosion resistance. The zinc coating protects the steel from rust and oxidation, making it suitable for moderate environmental conditions. This material is often chosen for enclosures that do not require the heavy-duty durability of stainless steel but still need reliable performance in less demanding environments. Plastic and composite materials are
increasingly being used in the manufacturing of hinges for electronic enclosures, especially in applications where weight savings and corrosion resistance are important considerations. These materials are also suitable for instances where electrical insulation is necessary. Plastic hinges are often used for smaller electronic devices or enclosures that are not exposed to extreme environments. They are lightweight, resistant to corrosion, and offer a cost-effective solution for applications where traditional metal hinges may be overkill.
Environmental considerations for electronic enclosures
The environmental conditions in which an electronic enclosure is used have a significant impact on the selection of hinge design and material. Factors such as exposure to moisture, dust, chemicals, temperature extremes, and vibration all influence the durability and performance of the hinge.
For enclosures that will be exposed to harsh weather conditions, such as outdoor electronics or industrial equipment, hinges must be able to withstand corrosion, extreme temperatures, and UV radiation. Stainless steel and coated steel hinges are typically used in these applications for their ability to resist rust and degradation. Additionally, seals and gaskets may be integrated into hinges to prevent water or dust from entering the enclosure, ensuring the protection of the sensitive components inside.
In controlled environments like cleanrooms, where minimizing dust and contaminants is essential, hinges must be designed to meet stringent cleanliness standards. Smooth, easy- to-clean materials, such as stainless steel or plastic, are often preferred. Hinges for these
Lift-off and other diecast hinges for heavy enclosure doors - from FDB Panel
environments are designed with minimal gaps and crevices to prevent the accumulation of dirt and dust, ensuring the cleanliness of the environment and the reliability of the electronic equipment.
Enclosures that are exposed to high levels of vibration or shock, such as those in automotive or industrial applications, require hinges that can maintain their function under stress. Continuous hinges, or those with reinforced pivot points, are ideal for these environments as they provide added durability and can withstand the forces that would cause a weaker hinge to fail. Hinges with shock-resistant features may also be selected to ensure that the enclosure’s contents remain safe and secure even in environments with significant movement.
Applications in the electronics industry
Hinges are used in a broad range of applications across the electronics industry, from small consumer electronics to large
industrial enclosures. One common use is in server cabinets, where hinges must support heavy doors while also providing smooth, reliable operation. Continuous and lift-off hinges are often used in these applications to provide the necessary support for large, often frequently accessed, doors.
In telecommunications, where secure access is paramount, concealed hinges are frequently used. These hinges allow for easy access while also ensuring that the enclosure remains secure from tampering. In medical equipment, where durability and cleanliness are crucial, stainless steel or plastic hinges are preferred to meet both functional and hygiene requirements.
Outdoor and industrial enclosures, which are exposed to challenging environmental conditions, often use corrosion-resistant materials like stainless steel or coated steel to ensure the hinges remain durable and reliable. These enclosures may house sensitive electronics that require protection from the elements, making the right hinge material essential for long-term performance.
Conclusion
Hinges are critical components in the design of enclosures and cabinets in the electronics industry. They enable secure and easy access to sensitive electronic components while ensuring durability and reliability across a range of environments. By understanding the different types of hinges, materials, and environmental considerations, engineers can make informed decisions to ensure their enclosures perform optimally, providing long-lasting protection for electronic equipment. The right hinge choice, tailored to the specific requirements of an application, ensures that enclosures remain functional and secure, safeguarding valuable electronics for years to come.
Concealed hinges – stainless steel ex-stock from FDB Panel Fittings
www.cieonline.co.uk
www.fdb.co.uk www.fdbonline.co.uk
Components in Electronics April 2025 29
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