Wafer Transport Box Latch Structure for Shock-Stable Stacking
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Solution Overview
Problem
Conventional wafer transport boxes fail to effectively minimize vibration and shock during transportation, leading to potential damage and instability when stacked, as they require cumbersome tape fixation and are not designed for multi-stage stacking, resulting in disordered and fallen containers.
Innovation Solution
A wafer transport box design featuring a lower housing with an arc-shaped rib and latch system, coupled with an upper housing and sidewall member, which securely fixes wafers using a latch and hook mechanism, along with a support member and protrusion members to stabilize the wafers and prevent movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lower container and upper container are fixed using tape, then the containers can be sealed and secured, but the process becomes cumbersome and time-consuming
Solution Approach 1:
The patent replaces the tape-based mechanical fixation system with an integrated latch mechanism that is structurally built into the container. The latch includes a latch body, latch arm, and spring assembly that automatically engage when the upper container is placed on the lower container, eliminating the need for manual tape application while providing reliable fixation.
2Device complexity
If the storage container is designed for single-level use, then the structure can be simple, but multiple containers cannot be stacked securely leading to falling and disorganization
Solution Approach 1:
The patent designs the container with universal stacking capability by incorporating standardized latch mechanisms and corresponding latch holes that work across multiple container levels. The upper container's bottom surface includes protrusions that fit into the lower container's recesses, while the latch system provides secure coupling, enabling stable multi-stage stacking without increasing individual container complexity.
3Device complexity
If wafers are stacked without a fixation means, then the container structure can be simple, but vibration and shock during transport cause wafer damage
Solution Approach 1:
The patent applies localized fixation features at critical positions within the container. The sidewalls include vertically extending ribs with recesses that receive protrusions from the wafer carrier, creating localized anchor points. The latch mechanism is positioned at specific locations to secure the wafer stack, providing targeted protection against vibration and shock without requiring a complex overall structure.
Data Source
AI summary
A wafer transport box according to an embodiment of the present disclosure includes a lower housing including a bottom plate and at least one lower rib which is formed vertically on an upper surface of the bottom plate and which forms a wall formed in an arc shape so that wafers are stacked in an inner space, an upper housing including an upper plate and an upper rib which is formed vertically on a lower surface of the upper plate and which forms a wall formed in an arc shape, and a sidewall member coupled inside the lower rib. Further, when the upper housing and the lower housing are coupled to each other, the sidewall member fixes the wafers stacked in the inner space.