Constant Force Spring Door Application Guide
Complete Solutions from Small Glass Doors to Large Factory and Logistics Center Applications
1 Product Overview
What is a Constant Force Spring Door?
A constant force spring door is a type of door product that utilizes a specially designed spring system to achieve automatic closing functionality. Its core principle involves storing and releasing energy through springs, enabling the door to automatically and smoothly close after being opened, without requiring external power.
Key Features:
- Automatic closing function enhances safety
- Smooth operation reduces impact and noise
- No electricity required, energy-saving and eco-friendly
- Adaptable to various sizes and application scenarios
2 Application Scenarios
Small Glass Door Applications
Ideal for glass doors in shops, offices, and residential spaces, providing elegant automatic closing functionality that enhances aesthetic appeal and convenience.
Medium Commercial Applications
Suitable for shopping malls, hotels, hospitals and other medium-sized commercial spaces, providing reliable automatic door solutions that ensure smooth traffic flow and safety.
Large Industrial Applications
Designed specifically for factories, logistics centers, warehouses and other large industrial environments, providing high-strength, durable automatic door solutions that meet heavy-duty requirements.
3 Working Principle
1 Energy Storage
When the door is pushed open, the constant force spring is compressed or stretched, storing mechanical energy. The spring's special design ensures a relatively constant force throughout the opening process.
2 Automatic Closing
When external force is removed, the stored energy is released, and the spring pushes the door back to the closed position. Closing speed can be controlled via adjustment devices to ensure smooth and safe operation.
3 Force Adjustment
Constant force spring doors typically feature force adjustment mechanisms that can be tuned according to door weight and usage requirements to ensure optimal performance.
Mechanical Advantages
Constant force spring doors use purely mechanical designs, requiring no electrical power, offering high reliability, simple maintenance, and long service life.
4 Technical Specifications
| Parameter | Small Applications | Medium Applications | Large Applications |
|---|---|---|---|
| Suitable Door Weight | 10-40kg | 40-100kg | 100-300kg |
| Door Width Range | 0.6-1.2m | 1.2-2.4m | 2.4-4.8m |
| Opening Angle | 0-180° | 0-180° | 0-120° |
| Service Life | >500,000 cycles | >1,000,000 cycles | >2,000,000 cycles |
| Operating Temperature | -30℃ to +80℃ | ||
5 Advantages Comparison
Energy Efficient
Purely mechanical design requires no electrical power, reducing energy consumption and carbon emissions.
Easy Maintenance
Simple structure with low failure rate, maintenance costs are much lower than electric door systems.
Long-lasting
High-quality materials and precision manufacturing ensure exceptionally long service life.
Cost Effective
Low initial investment with virtually no operating costs, offering high return on investment.
