Box body apparatus
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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 and a second sliding rail, where the sliding shaft moves along a linearly extending rail and an elliptically extending rail, respectively, to reduce the extent of door body protrusion beyond the box body's sidewall, allowing smoother rotation and minimizing interference with external structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single hinge shaft design is used, then the structure is simple, but the door body exceeds the outer sidewall of the box body causing interference with external structures
Solution Approach 1:
The single hinge shaft is segmented into two sliding shafts (first sliding shaft and second sliding shaft) that move independently along separate sliding rails. This segmentation allows the door body to follow a controlled trajectory during opening, preventing it from exceeding the outer sidewall of the box body while maintaining structural simplicity.
Solution Approach 2:
The hinge mechanism transitions from one-dimensional rotation around a single shaft to two-dimensional movement along elliptical and linear sliding rails. The first sliding shaft moves along an elliptically extending rail while the second sliding shaft moves along a linearly extending rail, creating a composite motion path that keeps the door body within the box body's outer sidewall boundaries.
2Ease of operation
If the door body rotates freely around a single hinge shaft, then the operation is simple, but the door body collides with external structures during rotation
Solution Approach 1:
The hinge mechanism transforms from a static single shaft to a dynamic system where two sliding shafts move along predetermined elliptical and linear trajectories. This dynamic configuration automatically adjusts the door body's position during opening, ensuring it does not collide with external structures while maintaining smooth operation.
Solution Approach 2:
The sliding rails are pre-configured with specific geometries (elliptical and linear paths) that guide the sliding shafts along predetermined trajectories. This preliminary design of the motion path ensures the door body follows a safe trajectory during opening, preventing collisions before they can occur.
3Ease of manufacture
If a conventional hinge is used, then the installation is straightforward, but embedded installations cause interference between the door body and the wall
Solution Approach 1:
The hinge is segmented into two independent sliding shaft systems with separate rails, allowing precise control of the door body's opening trajectory. This segmentation enables the door body to swing within a confined space that does not interfere with the embedded wall, making the device suitable for embedded installations while maintaining straightforward installation procedures.
Solution Approach 2:
By transitioning from single-axis rotation to two-axis sliding motion along elliptical and linear rails, the mechanism creates a compact opening path that fits within the constraints of embedded installations. The door body moves in a controlled two-dimensional path that prevents interference with the surrounding wall structure.
Data Source
AI summary
A hinge assembly of the box device is provided with a first sliding rail and a second sliding rail; the first sliding rail linearly extends, 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 part of the second sliding rail away from a box body is away from a pivoting side relative to the first sliding rail, and the door body moves towards a target side of the box body during a process from blocking the opening by the door body to opening the door body relative to the box body.


