I invented the "double crescent mother-child double anti-theft lock"

The individual is a male Chinese national, born on July 12, 1956, and a member of the Communist Party of China. He hails from Nangong City, Hebei Province. In May 1973, he began his career in Nanyang, Henan Province, working at the No. 5143 Factory First Research Institute of the State-owned (Henan State-owned Xiangdong Machinery Factory). Over the past 27 years, he has focused on the production of military equipment and the manufacturing of front and rear axles. Throughout his career, he has consistently demonstrated creativity and determination, proposing innovative solutions that significantly improved efficiency and safety within the factory. In his spare time, he never ceased to learn, actively researching technical advancements and continuously improving his professional skills. His passion for innovation led him to publish over 100 papers in more than 20 provinces and cities across China, covering topics such as electromechanics, mechanical engineering, and tool technology. These contributions earned him numerous awards and recognition from both domestic and international institutions. He also holds seven national patents, including the "Automatic Iron Unloading Device," "Mother-and-Child Double Lock," and "Column Automatic Lock." His work has been featured in major Chinese encyclopedias like "China Contemporary Science and Technology Experts" and "Contemporary Chinese Inventions," and he was even invited to appear on CCTV-10's "I Love to Invent, Lock King Fights for Hegemony." After 2000, due to declining factory efficiency, he participated in the "buy-out service" and "self-destruction" procedures. Over the next decade, he worked in various regions, including Guangdong, Shanghai, and Wenzhou, operating as a locksmith in companies like Leian, Baomin, Yuexin, and Spring City. Through hard work and dedication, he made a significant impact on China's hardware-locking industry, setting new standards and filling an international gap. **The Background of the Mother-in-Law Double Anti-Theft Lock** Locks have a long history in China, with developments spanning over 5,000 years. From simple padlocks to advanced smart locks featuring fingerprint recognition and intercom systems, the evolution of locks has been remarkable. Today, China is the world’s largest producer and consumer of locks, with over 1,000 manufacturers generating annual sales exceeding 5 million yuan. Zhejiang, Guangdong, and Shandong have established mature lock industries, with Wenzhou known as the "China Lock Capital" and Xiaolan in Zhongshan as the "Southern Lock City." The domestic lock market exceeds 40 billion yuan annually, with production capacity over 2 billion sets and exports surpassing 10 billion yuan. With global integration, the lock industry is moving toward internationalization and branding. With the growth of residential, automotive, and commercial sectors, demand for high-precision locks—especially in defense, security, and finance—has increased. High-end locks, such as IC card locks, electronic code locks, and fingerprint locks, are becoming more popular due to their enhanced security and higher profit margins. As people’s needs evolve, locks must not only be secure but also aesthetically pleasing. Motivated by this, I invented the "Mother-and-Child Double Anti-Theft Lock," drawing on my experience as a mechanical engineer and extensive R&D background in lock design. After analyzing real-life theft cases and studying existing lock structures, I identified key weaknesses: simple designs, limited key combinations, and slow technological progress. Inspired by the spring knife mechanism, I spent over two years developing a new locking system that dramatically increases security. **Structural Principle and Features of the Mother-in-Law Double Anti-Theft Lock** This lock combines two mechanisms into one body, with a mother key and a child key working in tandem. Its theoretical key code count exceeds 762.5 billion, making it extremely difficult to open using traditional methods. The design limits the space available for tools, making technical opening nearly impossible. This innovation brings significant social and economic benefits by reducing theft and enhancing public safety. **Usage of the Mother-in-Law Double Anti-Theft Lock** The operation is similar to conventional locks. To unlock, insert the red key upward, rotate 180 degrees, press the handle, and turn counterclockwise. To remove the key, first pull out the subkey, then rotate another 180 degrees to extract the mother key. For convenience, the door can be locked by simply closing it, eliminating the need for a key. It also features a night-time safety button that prevents external access. **Key Features of the Lock** 1. A unique front-and-rear double-spring design protects the lock core, increasing resistance to technical opening. 2. The dual-key system enhances key diversity and reduces the risk of duplication. 3. A cross four-way flange design improves stability and prevents misalignment. 4. An automatic locking mechanism ensures security without manual intervention. **Conclusion** The "Mother-and-Child Double Anti-Theft Lock" is a revolutionary advancement in lock technology, offering superior security and reliability. I hope this invention will be widely adopted in homes, banks, warehouses, and other critical locations. By promoting safety and reducing crime, it will bring lasting benefits to society and foster a safer, more harmonious environment. Together, we can build a technologically advanced and secure nation.

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