Vehicle Drawer Storage Box Assembly for Shrinkage-Tolerant Positioning
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Solution Overview
Problem
The existing drawer-type storage box designs face challenges in maintaining consistent attachment positions due to differential shrinkage of resin containers, leading to variations in the vertical space between the container and the cover, which affects appearance and assembly productivity.
Innovation Solution
The proposed solution involves a drawer-type storage box with a box-shaped resin container, an inclined slide rail, a bracket connecting the slide rail to the container, and a cover that stores the container. The container features a contact surface parallel to its width direction, which is fastened to the bracket using a fastening member mounted from the container's opening side, allowing for adjustable positioning in the width direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the container is assembled to the cover through the inclined slide rail, then the stiffness relative to impact from the side is improved, but the attachment position varies significantly in the vertical direction due to differential shrinkage
Solution Approach 1:
A bracket is introduced as an intermediary component between the slide rail and the container. The bracket includes a fastening portion that attaches to the slide rail and a container portion that connects to the container's side surface, serving as a mediator to decouple the attachment position from the container's shrinkage variations
Solution Approach 2:
The fastening member is configured to be adjustable in the width direction, allowing the attachment position of the bracket to the container to be varied. This enables compensation for differential shrinkage by adjusting the fastening position to maintain consistent vertical spacing
2Manufacturing precision
If a separated bracket is disposed between the slide rail and the cover and fastened from underneath, then the attachment position variation is controlled, but the workability and productivity deteriorate
Solution Approach 1:
Instead of fastening the bracket to the container from underneath (as in the prior art), the fastening member is mounted from the opening side of the container, fastening the bracket to the side surface. This inversion of the fastening direction improves workability and productivity
3Manufacturing precision
If the container has large shrinkage, then the width reduces, but the attachment position displaces downwardly increasing the upper space and deteriorating appearance
Solution Approach 1:
The bracket acts as an intermediary that decouples the container's width shrinkage from the vertical attachment position. By fastening the bracket to the container's side surface rather than the bottom, the system accommodates width variations without translating them to vertical position changes
Solution Approach 2:
The fastening member is designed to be adjustable in the width direction, allowing dynamic repositioning of the bracket attachment point. This enables compensation for shrinkage variations to maintain consistent appearance
Data Source
AI summary
A drawer-type storage box mounted on a vehicle V includes a box-shaped resin container having on a top thereof an opening portion, a slide rail that inclines relative to a width direction Y of the container, a bracket that connects the slide rail to the container, and a cover that stores the container and to which the slide rail is directly or indirectly attached, wherein the container has a contact surface that contacts the bracket and the contact surface is substantially parallel to a width direction Y of the container, wherein a fastening member mounted from the opening portion side of the container fastens the container and the bracket by the contact surface, and the container is movable in a width direction Y relative to the bracket by loosening a fastening force of the fastening member.