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Automotive Adjustable Seat Headrest Internal Frame Assembly
This assembly serves as the core internal support frame for multi-functional adjustable vehicle seat headrests. Constructed from chrome-plated hollow steel stay rods, engineered plastic housing shells, and built-in dual locking mechanisms, it integrates vertical height elevation and forward/backward tilt adjustments into two sets of locking systems. Mounted inside the headrest foam matrix, it provides height notch locking and tilt angle adjustment for front and rear seats in mid-to-high-end passenger vehicles, optimizing head support positioning, reducing rear-end whiplash risks, and improving overall riding comfort.
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Vertical Elevation Stroke
70 to 110 mm with standard 5 to 8 mechanical notch locking positions.
Tilt Angle Adjustment
Forward 5 to 15 degrees, backward 0 to 8 degrees with stepless or multi-stage locking.
Locking Reliability
Maintains height and tilt angle without slipping or loosening under full head pressure and rough road vibration conditions; Locking mechanism resists unhooking and structural failure under rear-end impact loads.
Vertical Elevation
10000 cycles or higher of notch insertion tests with zero slot collapse or slippage.
Tilt Angle Adjustment
8000 cycles or higher of press-release swiveling without ratchet or gear wear failure.
Environmental Adaptability
Operating range -40 to 90 degrees C high/low temperature cycles, interior cabin moisture, and sun exposure; Plastic parts remain non-brittle, plating layer free from peeling, and mechanism lubricant performance stays stable; Zero resonance noise after complete assembly.
Assembly Weight
Single set headrest frame assembly weighs approximately 150 to 220 g.
