Lockable Electronics Cabinet With Sequential Door Motion
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Solution Overview
Problem
Existing electronics cabinets lack an efficient mechanism for secure access and electromagnetic shielding while maintaining break-in resistance, as they often require complex hinge systems and additional space for hinges, which can compromise security and ease of installation.
Innovation Solution
A lockable electronics cabinet design featuring a door that moves in a sequence of linear and rotational motions, utilizing internal pivot axes and separate rotational joints, along with a linear motion mechanism driven by guiding tracks, allowing for a robust and secure sealing mechanism with reduced external space requirements, and optional electromagnetic shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional hinge systems are used for door attachment, then the door can be opened and closed, but the mechanism requires additional external space for hinges and becomes more complex
Solution Approach 1:
The patent merges the hinge function and pivot axis into a single integrated mechanism. The pivot axis is positioned inside the door leaf rather than being a separate external hinge, combining what would traditionally be separate components into one unified system that reduces overall complexity and external space requirements.
Solution Approach 2:
The pivot axis is nested within the door leaf structure itself, with the pivot axis extending through the bulk of the door. This nesting eliminates the need for separate external hinges and reduces the overall mechanism complexity while maintaining the door opening function.
2Ease of operation
If traditional hinges are positioned externally on the door, then the door can rotate, but external space adjacent to the door is occupied by the hinge mechanism
Solution Approach 1:
The traditional external hinge mechanism is extracted and replaced by an internal pivot axis system. The pivot axis is positioned inside the door leaf rather than being mounted externally, which removes the hinge mechanism from the external space adjacent to the door while preserving the rotational opening capability.
Solution Approach 2:
The pivot axis extends through the bulk of the door in the thickness dimension rather than being positioned on the external surface. This dimensional repositioning allows the door to rotate without requiring external lateral space, as the rotation axis is now embedded within the door's own volume.
3Strength
If the door is secured with a heavy construction for break-in resistance, then security is improved, but the door mechanism becomes more difficult to operate
Solution Approach 1:
The door operation is segmented into two distinct phases: linear motion phase and rotational motion phase. The linear motion mechanism handles the heavy door by providing mechanical advantage through guiding members and engaging members, while the rotational phase uses the pivot axis. This segmentation allows the heavy door to be operated more easily by distributing the effort across different motion types.
Solution Approach 2:
The linear motion mechanism acts as an intermediary between the user and the heavy door. The guiding members and engaging members provide a mechanical interface that reduces the effort needed to move the heavy door during the linear motion phase, making operation easier while maintaining break-in resistance.
4Adaptability or versatility
If the door is designed to open 180 degrees or more, then access to the cabinet interior is improved, but the door may collide with adjacent cabinets or be constrained by the cabinet body
Solution Approach 1:
The linear motion mechanism moves the door in the lateral dimension away from the cabinet body before rotation occurs. This dimensional shift creates clearance that allows the door to rotate 180 degrees or more without colliding with the cabinet body or adjacent cabinets, as the door's path is now in a different spatial plane.
Solution Approach 2:
The linear motion phase is performed as a preliminary action before the rotational motion. By first translating the door away from the cabinet body and adjacent structures, the path for subsequent rotation is cleared, preventing collisions and enabling wider opening angles.
Data Source
Figure 1a
Figure 1b
Figure 1c~1d
AI summary
A lockable electronics cabinet (1) comprises a body and a door. The door is arranged to be opened in a sequence of motions, comprising, first, a linear motion perpendicular to the plane of the door, then, a rotational motion around a pivot axis.