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Patent Information & Production OptionsRack-and-Pinion Synchronized Drawer Slide with a Folded-In Fixed Rail · Patent CN206314843U

Patent CN206314843U: bibliographic data, legal status, family, a plain-language reading of the claims, plus customization, US compliance points and how a manufacturing project runs.

At a glance

Patent numberCN206314843U (application CN201621081002)
TypeChina utility model (实用新型) - protects product shape and structure
Original titleInner-bent synchronous guide rail device for drawers (一种抽屉用内弯式同步导轨装置)
Patent ownerGuangdong Dongrong Metal Product Co., Ltd.
InventorsHe Jingtian, Wu Quanhe
Filing date2016-09-27
Grant date2017-07-11
Status (China)Expired - a China utility model lasts at most 10 years from filing; the term ended on 2026-09-27
Patent familyChinese filings only - no US, European, Japanese, PCT or other filings listed
Cited by6 later documents
SourceGoogle Patents (search for CN206314843U)

What the claims cover, in plain language

Claim 1 - a drawer slide with a fixed rail, lower slider, gear assembly, middle rail, upper slider and moving rail. The fixed rail has a mounting plate on one side and a track bent toward the plate on the other. The lower slider runs on the track and has a lower rack. The gear assembly is a gear seat with a gear, clipped into a hole in the middle rail; the middle rail fits over the lower slider and the gear’s lower teeth mesh with the lower rack. The upper slider on the middle rail has an upper rack meshing with the gear’s upper teeth, and the moving rail runs on the upper slider.

Claim 2 - the fixed rail is bent from one metal plate: mounting plate with holes, a riser, and the track folded back toward the plate. Claim 3 - the lower slider has a groove, rollers and the track has stops at both ends. Claim 4 - the middle rail has a slide groove with limit plates. Claim 5 onward - limit claws on the upper slider in recesses with a detent, and the moving rail’s channel with end stops.

This is a simplified reading for orientation only. The legal scope is defined by the exact claim wording in the official Chinese document.

What this means for US production

This patent was filed only in China and has expired, so it no longer restricts anyone in China either. It has no US or other foreign counterpart.

Two points to settle early:

  • Other patents may exist. Drawer slides are a heavily patented field led by large European and US hardware makers, including synchronization and soft-close features, so a freedom-to-operate (FTO) review of the gear synchronization and rail profile is needed before tooling.
  • Load class. Rail thickness, roller material and gear size are chosen for the drawer load; molds and dies are built per load class.

Customization and manufacturing

What can be customized

AreaOptions
Length10-24 in. (250-600 mm) and custom lengths
Load classLight, medium or heavy duty by steel thickness and rollers
FinishZinc plating, black or white coating
FeaturesSoft-close damper, push-to-open, lock-out at full extension
Gear and racksPOM or nylon, tooth size for quiet running
MountingSide-mount holes for cabinets, rear brackets for face-frame cabinets

Things to plan for (US market)

  • ANSI/BHMA A156.9 - cabinet hardware standard covering drawer slide cycle, static load and rack tests; many cabinet buyers specify it.
  • ANSI/BIFMA X5.9 - storage-unit standard used for office furniture with drawers.
  • Tip-over (STURDY Act, 16 CFR 1261) - clothing storage units sold in the US must meet stability rules; slides with full extension affect the test.
  • California Prop 65 - plated finishes and plastics are screened.

How a project runs

  1. Inquiry - lengths, load class, features and quantity.
  2. Design - rail profiles, slider and gear seat, rack pitch, stops.
  3. Prototype - samples for smoothness, noise and synchronization tests.
  4. Pilot run - cycle and load tests, corrosion tests on finishes.
  5. Production - roll forming or progressive stamping, plating, slider and gear molding, assembly.

Quantities & timeline

The rails need roll-forming lines or progressive stamping dies for each length family, the sliders, gear seats and gears need precision injection molds, and plating follows forming. Cycle testing and noise tuning take most of the development time. Send us your lengths, load class, finish, features, quantity and target price and we will reply with options.

Patent drawings

Rack-and-Pinion Synchronized Drawer Slide with a Folded-In Fixed Rail - Patent Fig. 1
Fig. 1 - End view of the slide.
Rack-and-Pinion Synchronized Drawer Slide with a Folded-In Fixed Rail - Patent Fig. 2
Fig. 2 - The assembled slide.
Rack-and-Pinion Synchronized Drawer Slide with a Folded-In Fixed Rail - Patent Fig. 3
Fig. 3 - The slide taken apart.
Rack-and-Pinion Synchronized Drawer Slide with a Folded-In Fixed Rail - Patent Fig. 4
Fig. 4 - The gear assembly.

Drawings reproduced from the public patent document for reference.

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  1. ✓ Patent vetted China-only family and legal status checked
  2. 2 Product brief · now How it works, uses and options written up
  3. 3 Prototype First samples for buyers to review
  4. 4 Pilot run Small first batch for launch customers
  5. 5 Volume production Repeat orders at scale

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This page is based on the public patent document CN206314843U, assigned to Guangdong Dongrong Metal Product Co., Ltd.. IP2M is an independent manufacturing service and is not affiliated with, endorsed by or licensed by the patent owner. Images marked as concept renderings are illustrations, not photos of an existing product. Patent status information is provided for reference only and is not legal advice; confirm freedom to operate for your market before production. Full disclaimer.