Universal drawer slide
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Solution Overview
Problem
Existing drawer slides with lock-in and lock-out features require separate left and right-hand slides, increasing inventory and labor costs due to the need for different directional release levers, which is inefficient for applications like emergency and commercial vehicles.
Innovation Solution
A universal drawer slide that can be mounted on either side of a cabinet with an adjustable cam mechanism, allowing the same slide to function on both sides by rotating and reorienting the cam, enabling levers to operate in the same direction for lock-in and lock-out functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate left and right hand drawer slides are used to enable levers to operate in the same direction, then the drawer slide can maintain proper lock-in and lock-out functionality, but inventory and stocking costs increase due to needing different slides for each side
Solution Approach 1:
The drawer slide is designed with a universal configuration where the cam mechanism can be adjusted between two mounting positions. This allows a single slide design to function on both the left and right sides of a cabinet by simply repositioning the cam, eliminating the need for separate left-hand and right-hand slide variants while maintaining proper lever operation direction and lock functionality.
Solution Approach 2:
The cam mechanism incorporates adjustable mounting positions that allow the slide to adapt its configuration based on installation side. By dynamically repositioning the cam between two fixed locations, the slide changes its operational characteristics to match the required side-specific geometry, enabling universal use while preserving directional lever operation.
2Ease of operation
If separate left and right hand drawer slides are manufactured and stocked, then proper directional operation is achieved, but labor and installation complexity increase
Solution Approach 1:
The drawer slide is designed with a universal configuration where the cam mechanism can be adjusted between two mounting positions. This allows a single slide design to function on both the left and right sides of a cabinet by simply repositioning the cam, eliminating the need for separate left-hand and right-hand slide variants while maintaining proper lever operation direction and lock functionality.
Solution Approach 2:
The cam mechanism is pre-configured with two defined mounting positions that correspond to left and right side installations. During installation, the cam is positioned in the appropriate pre-determined location, which automatically configures the slide for the correct side without requiring complex adjustments or specialized installation procedures.
3Quantity of substance
If a universal slide design is used without cam adjustment, then inventory costs decrease, but the levers on opposite sides will operate in different directions reducing functionality
Solution Approach 1:
The cam mechanism incorporates adjustable mounting positions that allow the slide to adapt its configuration based on installation side. By dynamically repositioning the cam between two fixed locations, the slide changes its operational characteristics to match the required side-specific geometry, enabling universal use while preserving directional lever operation.
Solution Approach 2:
The physical position of the cam mechanism is changed between two discrete mounting locations depending on whether the slide is installed on the left or right side. This parameter change (cam position) adjusts the geometric relationship between the lever and locking surfaces, ensuring proper operational direction while using the same slide design for both sides.
Data Source
AI summary
A universal drawer slide is described. The drawer slide includes an outer slide member and an inner slide member that are configured to move between a closed position and an extended position. A lever is pivotally mounted to a front portion of the inner slide member. A cam mounts to the outer side member in at least a first position and a second position. An engaging end of the lever engages with the cam in either the first position or the second position.