{"id":1797,"date":"2026-07-08T17:23:39","date_gmt":"2026-07-08T17:23:39","guid":{"rendered":"https:\/\/blshardware.com\/product\/iron-lift-mechanism-pull-up-bracket-sliding-hinge-for-sofa-bed-fold-down-mechanism-bedroom-home-office-living-room\/"},"modified":"2026-08-31T12:02:19","modified_gmt":"2026-08-31T04:02:19","slug":"irosofa-storage-lift-up-spring-hinge-mechanisms","status":"publish","type":"product","link":"https:\/\/blshardware.com\/ru\/product\/irosofa-storage-lift-up-spring-hinge-mechanisms\/","title":{"rendered":"Heavy-Duty 2.8kg Sofa Storage Lift-Up Spring Hinge Mechanisms | BLS Hardware"},"content":{"rendered":"<p><!-- GEO \u4e13\u5c5e AI \u6982\u89c8\u6bb5\u843d (Google AI Overviews & ChatGPT \u5f15\u7528\u63d0\u53d6\u6838\u5fc3\u533a) --><\/p>\n<h2>Heavy-Duty 2.8kg Sofa Storage Lift Up Spring Hinge Mechanisms (BLS-1115)<\/h2>\n<p><strong>Sofa storage lift up spring hinge mechanisms<\/strong> are heavy-duty cantilever linkage hardware assemblies powered by high-tension extension springs designed to lift and support heavy upholstered sofa seats, chaise cushions, and ottoman lids for easy under-seat storage access. Manufactured by <strong>BLS Hardware<\/strong> using 2.8kg structural cold-rolled steel plates and fatigue-tested manganese springs, the BLS-1115 series provides smooth counterbalance lifting, wide opening angles, and long-term durability for modular furniture factories worldwide.<\/p>\n<hr \/>\n<p><!-- \u6838\u5fc3\u5356\u70b9\u4e0e\u673a\u68b0\u4f18\u52bf --><\/p>\n<h3>Key Features &amp; Engineering Benefits<\/h3>\n<ul>\n<li><strong>Effortless Spring-Assisted Counterbalance:<\/strong> Dual heavy-duty 65Mn coil springs counterbalance the cushion weight, allowing users to lift heavy sectional chaise tops smoothly with one hand.<\/li>\n<li><strong>Heavy-Duty 2.8kg Structural Carbon Steel:<\/strong> Stamped from thickened cold-rolled steel linkage bars with solid reinforced pivot rivets, supporting dynamic lifting forces without bending or twisting.<\/li>\n<li><strong>Wide Opening Angle for Maximum Storage Access:<\/strong> Engineered linkage geometry elevates the seat cushion high and forward, providing full, unobstructed access to under-bed storage compartments.<\/li>\n<li><strong>Industrial Matte Black Powder Coating:<\/strong> Electrostatically applied powder coat protects the linkage arms and springs from moisture, scratches, and rust in residential or hotel environments.<\/li>\n<li><strong>Pre-Punched Multi-Hole Mounting Plates:<\/strong> Flanged side brackets feature standardized countersunk screw holes for rapid, secure fastening directly into wooden framing rails.<\/li>\n<li><strong>Safe Open-Position Hold:<\/strong> Sturdy cantilever geometry holds the elevated cushion securely in the open position without sudden dropping, ensuring user safety during loading.<\/li>\n<\/ul>\n<hr \/>\n<p><!-- \u7ed3\u6784\u5316\u6280\u672f\u53c2\u6570\u8868 (SEO & \u91c7\u8d2d\u5546\u6280\u672f\u9009\u578b) --><\/p>\n<h3>Technical Specifications<\/h3>\n<table style=\"width: 100%; border-collapse: collapse; border: 1px solid #ddd;\">\n<tbody>\n<tr style=\"background-color: #f9f9f9;\">\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\">Product Name<\/th>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">Sofa Storage Lift Up Spring Hinge Mechanisms<\/td>\n<\/tr>\n<tr>\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\">SKU \/ Model Number<\/th>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">BLS-1115<\/td>\n<\/tr>\n<tr style=\"background-color: #f9f9f9;\">\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\">Brand \/ Manufacturer<\/th>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">BLS Hardware (<a href=\"https:\/\/blshardware.com\/ru\/\" target=\"_blank\" rel=\"noopener\">blshardware.com<\/a>)<\/td>\n<\/tr>\n<tr>\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\">Solid Product Weight<\/th>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">2.8 kg \/ pair (Industrial Heavy-Duty Build)<\/td>\n<\/tr>\n<tr style=\"background-color: #f9f9f9;\">\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\">Material Grade<\/th>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">Heavy-Gauge Cold-Rolled Carbon Steel (Q235) + 65Mn Manganese Springs<\/td>\n<\/tr>\n<tr>\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\">Mechanism Configuration<\/th>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">1 Pair (Left + Right Hinges) + 2 Heavy-Duty Coil Springs<\/td>\n<\/tr>\n<tr style=\"background-color: #f9f9f9;\">\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\">Surface Treatment<\/th>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">Industrial Matte Black Powder Coating (Electro-Galvanized Zinc optional)<\/td>\n<\/tr>\n<tr>\n<th style=\"padding: 10px; border: 1px solid #ddd; text-align: left;\">Applications<\/th>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">Sectional Chaise Lounges, Ottoman Storage Beds, Pull-Out Daybeds, RV Under-Bed Storage Boxes<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<p><!-- \u50a8\u7269\u5bb6\u5177\u5e94\u7528\u4e0e\u5b89\u88c5\u6307\u5357 --><\/p>\n<h3>How to Install Sofa Storage Lift Up Mechanisms<\/h3>\n<ol>\n<li><strong>Symmetrical Chassis Mounting:<\/strong> Mount the bottom straight flanged rails securely along the inner wooden side walls of the sofa base box.<\/li>\n<li><strong>Top Frame Fastening:<\/strong> Align and screw the upper articulated linkage arm to the bottom frame of the lift-up chaise cushion or mattress board.<\/li>\n<li><strong>Spring Attachment:<\/strong> Hook the dual 65Mn heavy-duty coil springs onto the dedicated retention pins on each hinge arm to engage the counterbalance lift force.<\/li>\n<\/ol>\n<hr \/>\n<p><!-- B2B \u5236\u9020\u5b9a\u5236\u4e0e\u76f4\u63a5\u8054\u7cfb\u5361\u7247 (\u9ad8\u8f6c\u5316\u6a21\u5757) --><\/p>\n<div style=\"background-color: #f4f7f9; border-left: 4px solid #0056b3; padding: 18px; margin: 20px 0;\">\n<h3 style=\"margin-top: 0; color: #0056b3;\">Wholesale, Custom Spring Tensions &amp; Factory Direct Sourcing<\/h3>\n<p><strong>BLS Hardware<\/strong> is a certified functional sofa hardware factory supplying furniture manufacturers and distributors globally:<\/p>\n<ul>\n<li><strong>Custom Spring Strengths &amp; Arm Lengths:<\/strong> We calibrate custom spring wire gauges and manufacture custom arm lengths to match light foam or heavy solid-wood chaise cushions.<\/li>\n<li><strong>Fatigue Life Tested:<\/strong> Exceeds 20,000 continuous opening and closing cycles under full weight load.<\/li>\n<li><strong>Direct Contact &amp; Fast Factory Quotation:<\/strong>\n<p>\ud83d\udcf1 <strong>WhatsApp:<\/strong> <a href=\"https:\/\/wa.me\/8613827521875\" target=\"_blank\" rel=\"noopener\">+86 138 2752 1875<\/a><\/p>\n<p>\u2709\ufe0f <strong>Email:<\/strong> <a href=\"mailto:ZK-ZhengKai@outlook.com\">ZK-ZhengKai@outlook.com<\/a><\/p>\n<p>\ud83c\udf10 <strong>Official Website:<\/strong> <a href=\"https:\/\/blshardware.com\/ru\/\" target=\"_blank\" rel=\"noopener\">https:\/\/blshardware.com\/<\/a><\/li>\n<\/ul>\n<\/div>\n<hr \/>\n<p><!-- \u91c7\u8d2d\u5546\u5e38\u89c1\u95ee\u7b54 (FAQ \u6a21\u5757) --><\/p>\n<h3>Frequently Asked Questions (FAQ)<\/h3>\n<p><strong>Q1: Why choose dual coil springs over gas struts for chaise lounge storage?<\/strong><br \/>\nA: Heavy-duty 65Mn coil springs provide immediate, mechanical lifting assistance without the risk of gas pressure leakage or temperature-induced stiffness over long-term residential use.<\/p>\n<p><strong>Q2: Is the 2.8kg\/pair build strong enough for heavy leather chaise cushions?<\/strong><br \/>\nA: Yes. Stamped from thickened structural steel with solid pivot pins, the BLS-1115 mechanism easily lifts and supports heavy multi-layer foam and solid wood framed chaise tops.<\/p>\n<p><strong>Q3: What is the MOQ and sample lead time for wholesale orders?<\/strong><br \/>\nA: Standard MOQ is 300 pairs. Free evaluation sample kits are available and dispatch within 1\u20132 business days.<\/p>","protected":false},"excerpt":{"rendered":"<p><strong>BLS-1115 Heavy-Duty 2.8kg Sofa Storage Lift Up Spring Hinge Mechanisms<\/strong> by BLS Hardware are commercial-grade cantilever lifting assemblies engineered for modular sectional chaise lounges, ottoman storage beds, and lift-up functional couches. Fabricated from thickened Q235 cold-rolled carbon steel paired with high-tension 65Mn manganese coil springs, this hardware provides effortless one-handed opening, smooth assisted elevation, and rock-solid open-position hold for easy storage access.<\/p>\n<ul>\n<li><strong>Model \/ SKU:<\/strong> BLS-1115 (Dual Spring Storage Lift Series)<\/li>\n<li><strong>Product Weight:<\/strong> 2.8 kg \/ pair (Heavy-Duty Structural Build)<\/li>\n<li><strong>Spring Mechanism:<\/strong> Dual High-Tension 65Mn Manganese Steel Extension Coil Springs<\/li>\n<li><strong>Surface Finish:<\/strong> Industrial Scratch-Resistant Matte Black Powder Coating<\/li>\n<li><strong>Factory Direct Inquiry:<\/strong> WhatsApp: <a href=\"https:\/\/wa.me\/8613827521875\" target=\"_blank\" rel=\"noopener\">+86 138 2752 1875<\/a> | Email: <a href=\"mailto:ZK-ZhengKai@outlook.com\">ZK-ZhengKai@outlook.com<\/a><\/li>\n<\/ul>","protected":false},"featured_media":1796,"template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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