Shelving systems
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Solution Overview
Problem
Conventional shelving systems in delivery and service vehicles have fixed tray spacing that cannot be adjusted according to the size and shape of items, leading to inadequate or excessive spacing, and the locking mechanisms are difficult to operate, especially when carrying other items, causing items to shift or fall during transport.
Innovation Solution
A shelving system with adjustable side members and containers that include a rail with locking elements, allowing the containers to be fixed or translated relative to the guide member by moving a handle portion, enabling flexible spacing and easy access without requiring a free hand.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If trays are equally spaced on the rack according to fixed rack configuration, then the rack structure is simple and stable, but the spacing cannot be adjusted to accommodate items of varying sizes
Solution Approach 1:
The rack incorporates movable trays that can slide along the rack structure, transforming the static fixed-spacing system into a dynamic adjustable-spacing system. The trays can be positioned at different locations along the rack while maintaining structural stability, allowing adaptation to various item sizes without redesigning the entire rack structure.
Solution Approach 2:
The rack is divided into multiple independent tray units that can be individually adjusted along the rack structure. Each tray acts as an independent segment that can be moved to different positions, enabling flexible spacing configuration while maintaining the overall integrity and simplicity of the rack framework.
2Ease of operation
If conventional locking mechanisms with small thumb releases are used, then the locking mechanism is compact, but it is difficult to access and operate when carrying other items
Solution Approach 1:
A cable mechanism serves as an intermediary between the user's hand and the locking point. The cable transmits the locking force from a conveniently accessible location to the tray locking mechanism, allowing the user to operate the lock from a distance without needing to reach into difficult-to-access areas while carrying items.
Solution Approach 2:
The direct mechanical connection between the thumb release and locking point is replaced with a cable-based mechanical transmission system. This substitution allows the locking mechanism to be operated from a more accessible location while maintaining the compactness of the actual locking components.
3Ease of operation
If trays are allowed to slide freely on the rack, then accessing items is convenient, but trays slide at undesired times during vehicle movement causing items to shift or fall
Solution Approach 1:
The tray system transitions between two dynamic states: a locked state where the tray is fixed to the rack for stability during vehicle movement, and an unlocked state where the tray can slide freely for convenient item access. The system dynamically switches between these states based on operational needs, maintaining both stability and accessibility.
Solution Approach 2:
The locking mechanism applies a preliminary restraining force to prevent unwanted tray movement before vehicle movement occurs. By securing the tray in position before the vehicle starts moving or making sharp turns, the system proactively prevents items from shifting or falling, rather than reacting after the problem occurs.
Data Source
AI summary
A shelving system includes first and second side members. A cross member is coupled to the side members. A guide member is coupled to the cross member such that the guide member is movable relative to the cross member. A container including a rail is coupled to the guide member. The rail includes a first locking element and a second locking element that is connected to the first locking element. The container includes a handle having a third locking element that engages the first locking element. The locking elements are configured to move the container between a first orientation in which the container is provisionally fixed to the guide member and a second orientation in which the container can translate relative to the guide member.