Heavy-Duty Plug-In Sofa Headrest Adjustable L-Rod Hinges (90°-165°) | BLS Hardware

Heavy-Duty 90°-165° Sofa Headrest Adjustable L Rod Hinges (BLS-LR165)

Sofa headrest adjustable l rod hinges are mechanical articulating ratchet mechanisms featuring a solid L-shaped round insertion bar equipped with a compression spring sleeve designed to tilt and elevate sofa headrests across wide ergonomic comfort angles from 90° to 165°. Manufactured by BLS Hardware using high-tensile cold-rolled solid carbon steel and hardened internal gear pawls, the BLS-LR165 series provides spring-damped wobble-free insertion, smooth multi-gear ratcheting, and high load-bearing neck support for luxury furniture factories worldwide.

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Key Features & Engineering Benefits

• Extra-Wide 90°–165° Multi-Stage Articulation: Offers expansive angle adjustment from an upright 90° reading posture all the way back to a 165° deep lounging angle for supreme head and cervical relaxation.
• Spring-Loaded Anti-Rattle Insertion Stem: Fitted with a high-tensile steel compression spring and collar washer along the bottom solid L-rod, providing snug, rattle-free bayonet insertion into wooden frame sockets.
• Heavy-Gauge Solid Carbon Steel Construction: Solid round steel rod and reinforced gear housings withstand heavy leaning torque without bending, flexing, or stripping teeth.
• High-Gloss Mirror Chrome Plating: Multi-layer electroplated polished chrome finish protects the metal against humidity, sweat, friction wear, and rust while delivering clean visual aesthetics.
• Slotted Top Angle Bracket: Features pre-punched screw slots and round holes for fast, flexible alignment and rigid screw mounting into wooden headrest cushion frames.
• Automatic Full-Stroke Reset: Pushing the headrest forward past the 165° maximum stop releases the internal ratchet pawl, smoothly resetting the cushion flat.

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Technical Specifications

Product Name	Sofa Headrest Adjustable L Rod Hinges
SKU / Model Number	BLS-LR165
Brand / Manufacturer	BLS Hardware (blshardware.com)
Material Grade	Solid Carbon Steel (Q235) + 65Mn Spring Steel Coil & Gears
Adjustment Range	90° to 165° (Multi-Stage Ratchet Lock with Auto-Reset)
Mounting Structure	Spring-Loaded Plug-In L-Rod Stem + Pre-Drilled Slotted Angle Bracket
Configuration	Symmetrical Matched Pairs (Left + Right Hinges)
Surface Plating	High-Gloss Mirror Chrome Plating / Electro-Galvanized Zinc optional
Applications	Functional Sofas, Recliner Headrests, Adjustable Couch Armrests, Daybeds, Massage Loungers

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How the 90°-165° Spring-Loaded L-Rod Hinge Works

1. Socket Insertion: Insert the bottom spring-loaded L-rod stem into the concealed socket cavity inside the sofa backrest rail; the compression spring cushions the fit and eliminates wobble.
2. Stepped Forward Articulation: Pull the sofa headrest forward; the internal ratchet clicks through each gear tooth, locking firmly across multiple intermediate comfort angles up to 165°.
3. Full Disengagement & Reset: Push the headrest forward past the final gear stop to disengage the pawl and lower the cushion back down flat.

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Frequently Asked Questions (FAQ)

Q1: What is the purpose of the compression spring on the bottom L-rod stem?
A: The spring-loaded collar acts as a mechanical shock absorber and anti-rattle cushion when the rod is inserted into the sofa socket sleeve, ensuring a tight, silent fit without vibration or looseness.

Q2: Why is the 90°-165° angle range advantageous for luxury recliners?
A: Most standard hinges only tilt to 110° or 135°. The 165° extended tilt allows the headrest to recline almost completely flat, matching deep reclining sofa seat angles for full-body sleep posture.

Q3: What is the MOQ and sample lead time for wholesale orders?
A: Standard MOQ is 500 pairs (1,000 pcs). Free evaluation sample pairs are available and dispatch within 1–2 business days.