Electronic Device Housing Lever-Rail Mechanism for Projection Clearance
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Solution Overview
Problem
Existing electronic device housings face challenges in inserting electronic units at predetermined positions without reducing their size when obstacles such as projections are present, leading to limited component mounting and cooling performance issues.
Innovation Solution
The electronic device housing incorporates a lever mechanism with rotatable pins and movable rails that guide and support the electronic unit, allowing it to slide past obstacles by adjusting its height and orientation, ensuring proper insertion and removal without size reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional fixed-position insertion mechanism is used, then the structure is simple, but the electronic unit cannot be inserted at a predetermined position when obstacles such as projections are present, limiting component mounting and cooling performance
Solution Approach 1:
The insertion mechanism transitions from a fixed static structure to a dynamic system where the rail can move vertically and the lever can rotate. The rail is movable in the vertical direction relative to the housing, and the lever can rotate about a rotation shaft, allowing the system to adapt its configuration dynamically during insertion to navigate around obstacles like projections
Solution Approach 2:
The mechanism introduces vertical movement as an additional degree of freedom beyond the horizontal insertion direction. The rail can move up and down vertically, and the lever rotates in a vertical plane, adding a dimensional aspect that enables the electronic unit to clear obstacles in its path while being inserted horizontally
2Ease of operation
If the electronic unit size is reduced to avoid obstacles, then insertion is easier, but component mounting flexibility and cooling performance deteriorate
Solution Approach 1:
The lever acts as an intermediary mechanism between the electronic unit and the housing. Instead of the electronic unit directly contacting and being blocked by the projection, the lever transmits the insertion force while its rotation allows it to clear the projection, mediating the interaction between the unit and the obstacle
Solution Approach 2:
The mechanism replaces a simple direct-insertion mechanical system with a more complex system involving lever rotation and rail vertical movement. This mechanical substitution allows the electronic unit to maintain its full size while still achieving easy insertion by using the lever-rail mechanism to navigate around obstacles
3Adaptability or versatility
If a lever mechanism with movable rail is used, then the electronic unit can be inserted at predetermined positions without size reduction, but the device complexity increases
Solution Approach 1:
The insertion mechanism is segmented into distinct functional components: the lever that rotates about a shaft, the rail that moves vertically, and the guide member that constrains the rail's movement. This segmentation allows each component to perform its specific function independently, making the complex system more manageable and maintainable
Data Source
AI summary
An electronic device housing includes: a lever that is rotatably attached to an insertion portion into which an electronic unit is to be inserted; a movable rail that supports the electronic unit so as to be slidable in an insertion direction within the insertion portion; a guide member that guides the movable rail so as to be movable up and down with respect to the insertion portion; a first pin that is provided in the lever and rotates the lever by being moved toward a far side of the insertion portion; and a second pin that is provided in the lever and pushes up the movable rail in accordance with the rotation.