Slide-Out Storage Tray Latching for Dual-End Truck Box Access
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Solution Overview
Problem
Existing storage boxes for trucks face issues such as requiring access from the truck bed, limited tray extension, water ingress leading to tool damage, and insecure tray positioning during vehicle movement.
Innovation Solution
A storage box design with a slide-out tray that can extend fully or partially from either end, featuring a latch system for secure positioning and water-sealing mechanisms to prevent damage and ensure secure operation during truck movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a hinged lid is used to close the storage box, then access to tools is provided, but climbing onto the truck bed is required to access the entire interior
Solution Approach 1:
The storage box is divided into two functional zones: a main storage compartment with a hinged lid and a slide-out tray with a front-hinged door. This segmentation allows different access methods for different portions of the storage space, enabling ground-level access to frequently used items in the tray while the main compartment remains accessible from the truck bed.
Solution Approach 2:
The invention introduces a new dimension of access by adding a front-opening door to the slide-out tray, creating a ground-level access point. This transforms the single vertical access point (top lid) into multiple access points (top lid and front door), allowing users to access items without climbing onto the truck bed.
2Quantity of substance
If two slide out trays are mounted in one box with each drawer extending approximately half the length, then storage capacity is increased, but the length of items that can be stored is limited to less than half the width of the truck bed
Solution Approach 1:
Instead of dividing the storage space into two equal halves that limit item length, the invention inverts the approach by using a single long tray that can extend the full length of the box. The tray is designed to slide out completely from one end, allowing long items to be stored horizontally along the length of the truck bed rather than being constrained by half-length divisions.
3Ease of operation
If the end of the tray forms the door for closing the box, then a closure mechanism is provided, but water that leaks into the box travels down the inside surface of the door and into the tool tray
Solution Approach 1:
The closure function is extracted from the tray end and assigned to a separate door assembly that closes the box opening. This separation allows the tray to be designed with proper drainage features while the door provides the sealing and closure function, preventing water from traveling down the door surface into the tray.
Solution Approach 2:
The door assembly acts as an intermediary between the external environment and the tray interior. By positioning the door to close over the box opening rather than forming part of the tray end, it creates a barrier that intercepts water before it can reach the tray, protecting stored items from water damage.
4Ease of operation
If the tray is allowed to slide freely in the storage box, then accessibility is improved, but the tray can become unlatched and slide out while the truck is moving
Solution Approach 1:
The latching system is designed to be dynamic rather than static, automatically engaging and disengaging based on the tray's position. The latch mechanism remains inactive during normal sliding operations but automatically activates when the tray reaches its fully retracted position, providing security only when needed while maintaining accessibility during use.
Solution Approach 2:
The latch system is self-actuating, using the motion of the tray itself to trigger the latching action. As the tray slides into the retracted position, the latch automatically engages without requiring user intervention, and releases automatically when the tray is pulled outward, providing secure positioning while maintaining ease of access.
Data Source
AI summary
A storage box comprises a housing with open ends and a tray that slides out either open end and up to at least fifty percent or up to at least sixty percent of the length of the tray may slide out either open end. Latch members operable from either open end of the housing selectively hold the tray in a centered position and can be released to allow the tray to slide out a selected end of the housing. Multiple latch member mating members may be associated with the housing for selective engagement by the latch members to latch the tray in multiple extended positions between the centered position and fully retracted positions out either the first or second open ends. Latch engagement members mounted on the doors engage latches connecting the tray to the housing when the doors are shut to prevent the latches from becoming unlatched when the doors are shut.