Box device
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Solution Overview
Problem
Existing box devices with single hinge shaft designs often cause interference or collision between the door body and external structures during rotation, particularly in embedded installations, due to the door body exceeding the outer sidewall of the box body.
Innovation Solution
A box device with a hinge assembly featuring a first sliding shaft connected to a linear sliding rail and a second sliding shaft connected to an elliptical sliding rail, allowing the door body to pivot towards a target side, reducing the risk of interference by controlling the door body's trajectory and minimizing its extension beyond the box body's sidewall.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single hinge shaft design is used, then the hinge structure is simple, but the door body exceeds the outer sidewall of the box body during rotation causing interference with external structures
Solution Approach 1:
The single hinge shaft is divided into two separate hinge shafts (first hinge shaft and second hinge shaft), each responsible for different aspects of door body movement control. This segmentation allows independent optimization of each shaft's function to achieve the desired door trajectory while maintaining reasonable structural complexity
Solution Approach 2:
The invention introduces a new dimension of movement control by adding a second hinge shaft that enables the door body to move not only along the traditional rotation axis but also along an elliptical trajectory. This dimensional change in movement control allows the door to clear external structures during opening while still providing full access
2Ease of operation
If the door body rotates freely around a single hinge shaft, then the door can open fully, but it exceeds the outer sidewall of the box body and interferes with embedded installation
Solution Approach 1:
The hinge assembly dynamically controls the door body's movement trajectory through the coordinated action of two hinge shafts with different orientations. The door body follows an elliptical path during opening, dynamically adjusting its position to clear external structures while maintaining full opening capability
Solution Approach 2:
The two hinge shafts are positioned asymmetrically relative to each other, with the second hinge shaft offset from the first. This asymmetric arrangement creates the elliptical movement trajectory that allows the door to clear external structures during opening while maintaining proper alignment when closed
3Device complexity
If a conventional hinge assembly is used, then the structure is simple, but the door body collides with external structures during rotation
Solution Approach 1:
The hinge assembly preliminarily positions the door body along a controlled elliptical trajectory before the door reaches its fully open position. This preliminary action ensures the door clears external structures during the opening process, preventing collision before it can occur
Solution Approach 2:
The second hinge shaft acts as an intermediary element between the first hinge shaft and the door body, mediating the movement to create an elliptical trajectory. This intermediary mechanism allows the door to follow a safe path that clears external structures while maintaining connection to the box body
Data Source
AI summary
A hinge assembly of a box device includes a first sliding rail and a second sliding rail. The first sliding rail extends in a straight line, and the second sliding rail extends along an ellipse. When a door body blocks an opening, the first sliding rail is perpendicular to a plane where the opening is located, and the portion of the second sliding rail that is away from a box body is close to a pivoting side with respect to the first sliding rail, and the door body moves towards a target side of the box body during opening of the door body, with respect to the box body, from a state of blocking the opening, to reduce the extent to which the door body exceeds an outer sidewall of the box body.