Automotive Rear Backrest Steel Frame Assembly for Passenger Vehicles

This product is a dedicated steel support frame assembly for one-piece rear seat backrests in passenger vehicles. Serving as the primary load-bearing foundation for rear backrest foam and upholstery, it pairs with the previously mentioned 60/40 split rear cushion frame to assemble a complete rear seating system. Relying on its robust frame structure, it supports rear occupant back loads while working with locking catches to enable backrest fold-down and retention. It is widely suitable for standard one-piece rear backrests in sedans, SUVs, and MPVs, fulfilling both passenger support and trunk space expansion functions.

Parameter
Features

Main Frame & Reinforcing Steel Tubes	Q235 cold-rolled steel tubing, wall thickness 1.2 to 1.4 mm; Full immersion electro-coating anti-rust treatment; Neutral salt spray test 480 hours or higher; Long-term anti-rust and anti-corrosion performance in humid cabin environments without rusting or peeling.
Buffer & Anti-Vibration Sleeves	EPDM weather-resistant rubber material; Resistant to high and low temperatures, aging, and ozone; Long-term use in 70 degrees C humid-heat environments without cracking, hardening, or falling off.
Welding Process	CO2 full-penetration welding; Weld joints ground, rust-proofed, and passivated; High weld strength with zero false welds or detachment risks.

Key Features & Selling Points:
- Reinforced Steel Construction: Built with electro-coated Q235 steel tubing (1.2 to 1.4 mm wall thickness) and CO2 full-penetration welding, withstanding over 480 hours of neutral salt spray testing for exceptional durability.
- Versatile Structural Compatibility: Features an integrated three-zone reinforced backrest frame structure designed for full rear backrests, fully compatible with 60/40 split cushion frames and allowing single-side backrest fold-down.
- 90-Degree Fold-Down Capability: Folds down smoothly from an upright operating position to a fully flat orientation at approximately 90 degrees to extend trunk cargo volume.
- Secure Mechanical Lock Engagement: Works with mechanical latch hooks to eliminate shaking, play, or rattling noise during bumpy road travel once locked.
- Cable-Actuated Remote Release: Utilizes a cable pull-handle remote unlocking system, ensuring quick, effort-free operation.