Drawer Slide with Two-Way Opening Mechanism Using Identical Rails
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Solution Overview
Problem
Existing drawer slide systems require two different types of slide rails for opposite sides, leading to storage and installation difficulties, and high manufacturing costs due to the need for two distinct molds.
Innovation Solution
A drawer slide with a two-way opening and closing structure, featuring a main rail with a limiting portion, a pivot block, a slide rail, a pull lever, and elastic members, allowing for identical slide rails to be used on both sides by utilizing a pivot block and pull lever mechanism that enables slide-out, slide-in, and locked states, reducing the need for directional specificity and simplifying manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two different types of slide rails are used for left and right sides, then the drawer can be locked properly on both sides, but storage space is wasted and installation complexity increases
Solution Approach 1:
The pivot block incorporates an asymmetric limiting portion with a limiting surface that is inclined relative to the vertical direction. This asymmetric design allows the same slide rail assembly to be installed on both left and right sides while automatically adapting to the directional requirements of each side, eliminating the need for separate left-handed and right-handed slide rails.
Solution Approach 2:
The slide rail assembly is designed as a universal component that can function on both sides of the drawer. The pivot block's asymmetric limiting portion combined with the pull lever mechanism enables a single type of slide rail to provide proper locking and unlocking functionality regardless of installation orientation, achieving multi-functionality.
2Reliability
If two different types of slide rails are manufactured, then each side gets the correct configuration, but manufacturing cost increases due to requiring two different molds
Solution Approach 1:
The asymmetric limiting portion with its inclined limiting surface is built into the pivot block of a single universal slide rail design. This allows one mold to produce all pivot blocks, which then automatically provide the correct directional behavior when installed on either left or right sides, eliminating the need for separate molds for left and right configurations.
Solution Approach 2:
Instead of creating two different symmetric designs for left and right sides, the invention uses a single asymmetric design that inverts its functional orientation based on installation direction. The pull lever mechanism works in conjunction with the asymmetric limiting portion to provide correct operation regardless of which side the slide rail is installed on, effectively using inversion to reduce manufacturing complexity.
3Ease of manufacture
If symmetrical slide rails are used on both sides, then manufacturing is simplified, but the locking mechanism cannot function properly in both directions
Solution Approach 1:
The pivot block incorporates an asymmetric limiting portion with a limiting surface inclined at a specific angle relative to the vertical direction. This asymmetric geometry is crucial for enabling the pull lever to properly engage and disengage the locking protrusion in both left and right installation configurations, maintaining reliability while using a single symmetric slide rail assembly.
Solution Approach 2:
The pull lever is designed to pivot dynamically between different positions to engage or disengage the locking mechanism. When the pull lever is in the first position, it enables the locking protrusion to engage the locking slot; when pivoted to the second position, it allows the slide rail to be pulled out. This dynamic movement compensates for the asymmetric limiting portion and ensures proper locking function on both sides.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables easier installation of identical slide rails on both sides of a cabinet, reducing storage and manufacturing complexities while lowering production costs by allowing a single type of mold to be used for both sides.
Implementation Method 1
an elastic member disposed between the two side walls and the two side surfaces
Data Source
AI summary
A drawer slide with a two-way opening and closing structure includes: a main rail, a pivot block pivotally provided on the main rail, a slide rail slidably mounted on the main rail, and a pull lever pivotally disposed on the slide rail. The main rail has a limiting portion disposed along a vertical direction. The pivot block has an offset post movably disposed at the limiting portion along the vertical direction, and a first dislocation block which can be locked with a second dislocation block of the pull lever in a staggered manner. The user can set two sets of identical drawer slides with the two-way opening and closing structure on two sides of the drawer, and the first and second dislocation blocks can be misaligned by the limiting portion, namely, two identical slide rails 40 can be applied to the two opposite sides of the drawer.