en.Wedoany.com Reported - Jingji Technology, based in Hubei, China, achieved a milestone in 2025 with the delivery of over 10 million units of automotive seat recliners. This product has held the top position in China's comprehensive market share for two consecutive years and ranks first globally in market share for new energy vehicles.
The recliner is a core safety component of the automotive seat system, enabling stepless or stepped adjustment of the seat backrest angle through the precise meshing of fineblanked gears. In the event of a rear-end collision, the recliner must lock within milliseconds, withstanding impact torques exceeding 2000 Nm or even 5000 Nm. A qualified recliner must also achieve a balance between locking strength and energy absorption, dissipating some kinetic energy through controlled micro-deformation to prevent secondary injuries to the occupant's spine from rigid reaction forces.
In the 1990s, China's automotive recliners were entirely dependent on imports. The Jingji Technology team utilized a loan from the "Shuangjia Project" to import three fineblanking presses from Feintool in Switzerland and adopted a dual-track strategy. On one hand, they introduced fineblanking materials from Japan and South Korea to ensure R&D progress while collaborating with domestic steel enterprises to achieve localization of fineblanking steel. On the other hand, they dispatched technicians to Europe in multiple batches for systematic training. In 1996, China's first independently developed high-precision handwheel recliner for passenger cars, the TJL11, was born at Jingji Technology and successfully supplied for the FAW-Volkswagen Jetta model. In 1998, the first domestic universal plate-spring recliner core component, the TJB1, was successfully developed and granted a national patent. In 2001, the TJB2 product was launched and exported to countries and regions including Malaysia and South America. The first-generation recliner had a diameter of approximately 83 millimeters and weighed about 420 grams.
The universal plate-spring recliner TJB10 was introduced in 2008, featuring a dual-point locking structure instead of a single-point lock, which increased the core component's static strength from the national standard requirement of 373 N·m to over 2500 N·m. This product adopted a single-tooth oscillation gap-elimination solution, resolving the industry-wide technical challenge of backrest longitudinal clearance and achieving zero-clearance adjustment. By 2021, cumulative sales of the TJB10 had surpassed 100 million units. Through multiple rounds of process optimization and die iteration, the fineblanking precision of the recliner's core components has been stably controlled within 0.02 millimeters, a fivefold improvement from the initial stage's 0.1 millimeters. Recliners manufactured using this fineblanking technology have been applied in the seat systems of major global automakers such as Mercedes-Benz, BMW, and Ford.
Jingji Technology continues to make breakthroughs in the strength and durability of recliners, increasing the durability test cycle from the industry standard of 50,000 cycles to 80,000 cycles, shortening response time to within 350 milliseconds, and achieving the highest international standards for electromagnetic compatibility. The new generation of electric recliner core components has achieved weight reduction through structural topology optimization and the application of new materials, with the diameter reduced to 65 millimeters and weight down to 210 grams. Recliners used in seat armrests can have a minimum diameter of 45 millimeters and weigh only 120 grams. From manual recliners to electric recliners, and from basic products to high-end offerings, Jingji Technology's recliner technology has formed a relatively complete product spectrum.
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