Automotive Rear 60/40 Split Seat Cushion Steel Frame Assembly

This product is a dedicated steel frame assembly designed for 60/40 split rear seat cushions in passenger vehicles. It utilizes a modular combination of two independent frame sets—40% and 60% sections—matching the classic rear seat split layout. This allows either side of the cushion to be folded up independently. Suited for standard sedans, SUVs, and MPVs, it pairs with rear PU foam cushions and backrest frames to construct a complete rear seating system, providing reliable load-bearing, folding limit stops, and structural support.

Parameter
Features

Split Main Frame	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, resisting cabin vapor and condensation corrosion.
S-Type Support Springs	65Mn high-carbon manganese spring steel wire, wire diameter 2.8 to 3.4 mm; Heat-treated, quenched, and tempered; High fatigue deformation resistance, preventing long-term seating sagging and softening.
Flip Pivot Shaft & Locking Catch	Thickened stamped steel plate with wear-resistant alloy pin shaft; Stamped and wear-resistant hardened treatment; Resists deformation and loosening after repeated opening and closing.
Buffer & Anti-Vibration Sleeves	EPDM weather-resistant rubber; Resistant to high and low temperatures, aging, and ozone; Long-term durability without hardening or cracking.

Key Features & Selling Points:
- Industry Standard 60/40 Split Layout: Features a modular left and right split configuration, allowing flexible cargo space expansion by folding one or both cushion sections independently.
- Effortless Cushion Folding: Offers a 35 to 45 degree flip-up angle with limit stops and detent locking. Requires low operating effort (20 to 35 N) for smooth manual unlocking and lifting.
- Heavy-Duty Steel Construction: Built from electro-coated Q235 steel tubing (1.2 to 1.4 mm wall thickness) withstanding over 480 hours of neutral salt spray testing for corrosion resistance.
- High-Fatigue S-Spring Grid: Integrates quenched and tempered 65Mn spring wire (2.8 to 3.4 mm diameter) to support full passenger weight without sagging.
- Reliable Anti-Dislodgement Locking: Keeps the cushion firmly fixed under passenger load, preventing accidental bounce-up, movement, or loosening during vehicle operation.