Rack-Mounted Electric Device With Nested Anti-Fall Members
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Solution Overview
Problem
Existing rack mount structures for electronic devices result in increased size, weight, and complexity, leading to higher processing and assembly costs, and require time-consuming engagement release for pulling out and inserting units.
Innovation Solution
A rack and electric device configuration with internal restriction members that prevent falling without enlarging or complicating the apparatus, using guide members and restriction members to support and guide the device within a rectangular parallelepiped shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If engaging members are attached to outer surfaces of units and rack, then falling prevention is achieved, but device complexity and size increase
Solution Approach 1:
The restriction members are nested within the case structure, with first and second restriction members attached to inner surfaces of side surfaces. This internal nesting approach prevents falling without adding external attachments, thereby maintaining a simple overall structure while achieving reliable falling prevention.
Solution Approach 2:
The restriction members extend in the width direction and are positioned between column members in the back direction, utilizing three-dimensional spatial arrangement. This dimensional positioning allows the restriction members to effectively prevent falling without increasing the external dimensions or complexity of the case.
2Reliability
If engaging members are attached to outer surfaces of units and rack, then falling prevention is achieved, but size and weight increase
Solution Approach 1:
The restriction members are integrated within the case structure rather than added as external attachments. This nesting approach prevents falling without increasing the external dimensions or weight of the unit, as the restriction members utilize the existing case space.
3Reliability
If engaging members are attached to outer surfaces of units and rack, then falling prevention is achieved, but processing and assembly costs increase
Solution Approach 1:
The restriction members are attached to inner surfaces of the case, allowing them to be integrated during the case manufacturing process. This approach eliminates the need for separate attachment operations required by external engaging members, thereby reducing processing and assembly costs.
4Reliability
If engagement release work is required to pull out unit, then falling prevention is achieved, but workability decreases
Solution Approach 1:
The restriction members are designed to allow dynamic movement: they restrict forward movement when the unit is in the rack, but can be easily released when pulling out is required. This dynamic design provides falling prevention during operation while maintaining ease of removal when needed.
Data Source
AI summary
A rack includes first to fourth column members and first and second guide members. A case of an electric device has first and second side surfaces in a width direction that are supported by the first and second guide members, respectively. First and second restriction members are attached to inner surfaces of the first and second side surfaces of the case, respectively, for restricting the case from moving in a front direction of the rack. Second restriction member is attached to face the first restriction member in the width direction. In a state where the electric device is housed within the rack, the first restriction member is located between the first and third column members in a front-back direction. The second restriction member is located between the second and fourth column members in the front-back direction.