Three-Guide Drawer Arrangement for Vertical Access and Travel Stability
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Solution Overview
Problem
Existing drawer systems for vehicles face challenges such as limited vertical extension, vulnerability to outdoor elements, increased width due to telescopic guide rails, and reduced storage capacity due to horizontal motion constraints, which affect accessibility and stability during vehicular travel.
Innovation Solution
A drawer arrangement with three guides that allow horizontal and vertical movement, supported near its horizontal extremities in closed positions, cantilevered in fully extended positions, and inclined in intermediate positions, using load bearing members with rollers and adjustable slots to maximize storage utilization and accessibility, while minimizing complexity and weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If telescopic guide rails are used to allow horizontal drawer motion, then drawer accessibility is improved, but the drawer width increases and the load surface area decreases
Solution Approach 1:
The patent transitions from horizontal drawer motion to vertical drawer motion, utilizing the vertical dimension instead of horizontal space. This allows the drawer to move up and down within the enclosure without requiring side-mounted guide rails, thereby preserving the full load surface area while maintaining accessibility through vertical extension beyond the door opening.
Solution Approach 2:
The patent inverts the conventional drawer motion direction by implementing vertical motion instead of horizontal motion. The drawer moves vertically along guide posts rather than horizontally along guide rails, fundamentally changing the direction of operation to resolve the space conflict.
2Ease of operation
If telescopic guide rails are mounted on drawer sides, then drawer motion is enabled, but the mechanism is vulnerable to dirt, debris, snow, and water causing jamming and rust
Solution Approach 1:
The patent removes the vulnerable telescopic guide rail mechanism from the system and replaces it with a simpler vertical motion system using guide posts and rollers. This extraction eliminates the complex horizontal telescoping mechanism that was susceptible to contamination and failure in outdoor environments.
Solution Approach 2:
The patent employs simple, robust components such as guide posts, rollers, and brackets that are inexpensive, easy to replace, and resistant to environmental degradation. These components prioritize reliability and ease of maintenance over mechanical complexity, suitable for outdoor vehicular applications.
3Ease of operation
If drawer moves only horizontally through door opening, then accessibility is improved, but the drawer cannot utilize full vertical height of enclosure when door vertical dimension is less than enclosure vertical dimension
Solution Approach 1:
The patent utilizes vertical motion along guide posts to enable the drawer to move both vertically and horizontally. This allows the drawer to extend beyond the door opening in the vertical dimension while maintaining horizontal accessibility, thereby maximizing the use of the full enclosure vertical height without being constrained by door dimensions.
Solution Approach 2:
The patent implements a dynamic motion system where the drawer can move vertically along guide posts and horizontally through the door opening. This dynamic capability allows the drawer to adapt its position to maximize storage utilization while maintaining accessibility, overcoming the static limitation of horizontal-only motion.
4Volume of moving object
If vertical drawer motion is implemented, then storage capacity is improved, but complex spring, pneumatic, or hydraulic systems are required to assist motion
Solution Approach 1:
The patent employs gravity as a natural force to assist vertical drawer motion. The drawer can be easily lowered by gravity when opening, and simple spring or gas strut mechanisms provide minimal assistance for lifting, eliminating the need for complex motorized or hydraulic systems. The system serves itself by utilizing natural gravitational forces.
Solution Approach 2:
The patent replaces complex spring, pneumatic, or hydraulic motion assistance systems with simpler mechanical elements such as guide posts, rollers, and minimal spring or gas strut mechanisms. This substitution reduces system complexity while maintaining the ability to assist vertical motion, prioritizing mechanical simplicity over complex engineered systems.
5Stability of the object's composition
If drawer is secured at horizontal extremities for travel stability, then load stability is improved, but the extent of drawer travel out of enclosure opening is limited
Solution Approach 1:
The patent shifts the support and stabilization function from horizontal extremities to vertical positions along the guide posts. The drawer is supported near its vertical extremities during travel, allowing maximum horizontal extension while maintaining stability through vertical support points that prevent excessive movement during vehicular travel.
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
The solution provides reliable, easy-to-use, and secure drawer systems that maximize storage capacity, maintain load stability during travel, and enhance accessibility, while being economical and suitable for retrofitting existing enclosures.
Implementation Method 1
load bearing members with rollers
Data Source
AI summary
Drawer arrangements are provided which include a drawer connected to a support structure having three guides for the path of the drawer between open and closed positions, at least two of which are operational at any given position of the drawer, as it moves both horizontally and vertically between different locations. In a closed position, the drawer is supported near its horizontal extremities and rests in a position that resists horizontal motion. In fully extended open positions, the drawer is supported in a cantilevered manner from the support structure. Intermediate the fully closed and fully extended positions, the drawer is supported in inclined positions which provide access to contents therein. The present invention also includes mounting structure which facilitates connection at a variety of locations under the floor of a motor home, with exterior accessibility.