Elevator Door Lock
Elevator Door Triangular Safety Lock (EDTSL)
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The Importance of Elevator Door Lock Systems
Elevator doors must remain securely closed whenever the car is not correctly positioned at a landing. A properly designed locking system prevents accidental door opening, reduces operational risks, and ensures compliance with international safety standards. Any failure in this mechanism can lead to serious safety hazards and system downtime.
A reliable locking system not only protects passengers but also improves elevator efficiency by minimizing unexpected faults and maintenance interruptions. This is why elevator manufacturers and maintenance companies place strong emphasis on choosing dependable door lock components.
Engineering Focused on Safety and Precision
Our Elevator Door Lock solutions are developed with safety-first engineering principles. Every design begins with a clear understanding of door structure, installation conditions, and mechanical stress during daily operation. By optimizing locking strength, engagement accuracy, and release sensitivity, we ensure stable performance even under high-frequency usage.
Precision machining and strict dimensional control allow our products to integrate seamlessly with different elevator door systems. This reduces installation complexity and ensures consistent performance across various elevator models.
Elevator Triangle Lock – Premium Safety Solution
1. Product Overview
The triangle lock is a high-security door interlock system designed for elevators, featuring a patented triangular key mechanism. Manufactured to EN 81-20 standards, it ensures foolproof door protection for both landing doors and car doors.
2. Key Features
- Anti-Tamper Design: Unique key shape prevents unauthorized access with standard tools
- Dual-Mode Installation: Compatible with vertical/horizontal door configurations (landing doors & car doors)
- Fail-Safe Mechanism: Automatically re-locks upon door closure without manual intervention
- Corrosion-Resistant: Zinc alloy construction with IP54-rated dust/water resistance
3. Technical Specifications
| Parameter | Value |
|---|---|
| Operating Force | ≤50N |
| Key Insertion Depth | 12±0.5mm |
| Temperature Range | -30°C to +70°C |
| Certification | CE, ISO 9001, GOST |
4. Competitive Advantages
• 30% faster installation than conventional locks
• 500,000+ cycle durability tested
• Customizable branding on key heads
5. Application Scenarios
✔ Residential elevators
✔ High-rise commercial buildings
✔ Hospital/airport passenger elevators
✔ Fire-rated elevator systems
6. Why Choose Our Product?
As the original triangle lock manufacturer since 2010, we combine German precision engineering with cost-effective Chinese manufacturing. All products undergo 100% functional testing before shipment.
Durable Materials for Long Service Life
Material quality directly impacts the lifespan of elevator components. We select high-grade metals and wear-resistant materials to ensure excellent strength, corrosion resistance, and fatigue performance. Surface treatments are applied to improve durability in demanding environments such as high-humidity shafts or high-traffic commercial buildings.
Each Elevator Door Lock is designed to maintain smooth mechanical engagement over time, reducing wear and ensuring reliable locking action throughout its service life.
Compatibility with Global Elevator Standards
International markets demand compliance with strict safety and quality requirements. Our door lock products are developed to meet common global elevator standards and are suitable for residential, commercial, and industrial elevator applications.
Thanks to flexible design options, our products can be adapted to different door configurations, opening modes, and control systems. This makes them ideal for both new elevator installations and modernization projects.
Quality Control You Can Trust
Consistent quality is essential in elevator safety components. From raw material inspection to final assembly, every production step follows strict quality control procedures. Functional testing ensures accurate locking performance, smooth unlocking response, and stable operation under repeated cycles.
By maintaining tight quality standards, we help our customers reduce failure rates, maintenance costs, and warranty risks.
Core Manufacturing Processes of Elevator Triangle Locks
1. Material Selection
• Lock Body: High-strength zinc alloy (EN AC-43000) for corrosion resistance
• Key Mechanism: Precision-machined stainless steel (AISI 304) with triangular profile
• Spring Component: Music wire (SWP-B grade) for 500,000+ cycle durability
2. Key Production Stages
a) CNC Machining
- 5-axis milling creates lock body cavities with ±0.05mm tolerance
- Laser engraving forms anti-counterfeit key patterns
b) Hardening Treatment
- Case hardening (HRC 50-55) for wear-resistant key teeth
- Electroless nickel plating (5-8μm) for corrosion protection
c) Assembly & QC
- Robotic arm installation of springs and locking pins
- 100% functional testing with certified load cells (≥200N force test)
3. Functional Integration
• Interlock System: Mechanical linkage with door sensors (EN 81-20 compliant)
• Safety Feature: Automatic re-locking after 3-second key removal
Series
Kone Elevator Door Lock
Mitsubishi Elevator Door Lock
Atlas Elevator Door Lock
