Vehicle Door Hinge Compressible Check Structure
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Solution Overview
Problem
Existing vehicle door check structures are not effective in retaining the door in an open position, especially on hills where gravity can cause the door to close due to insufficient holding force.
Innovation Solution
A vehicle door hinge structure with a compressible check structure, including a clip member and a bracket pin, that compresses to retain the door in the fully open position, requiring a predetermined force to open or close the door.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional check structure is used to retain the door in an open position, then the door can be held open under normal conditions, but the check structure cannot overcome gravity when the vehicle is parked on a hill
Solution Approach 1:
The check structure utilizes a compressible member that changes its physical state from uncompressed to compressed, thereby changing the force parameters. When the door is moved to the fully open position, the compressible member compresses between the hinge arm and bracket, generating increased holding force to overcome gravity on hills while maintaining normal retention capability on level ground.
2Reliability
If the check structure applies sufficient force to prevent the door from closing on hills, then the door remains securely open, but the door becomes difficult to move out of the open position
Solution Approach 1:
The check structure employs a dynamic compressible member that adjusts its force output based on the door position. During normal operation, the member remains uncompressed allowing free movement. When the door reaches the fully open position, the member compresses to provide strong retention force, and this compressed state must be overcome by deliberate user force to move the door, creating a dynamic balance between ease of operation and secure retention.
3Reliability
If a rigid check structure is used to hold the door open, then the door can be retained firmly, but the structure cannot accommodate movement variations and gravity forces
Solution Approach 1:
The compressible member changes its physical parameters (compression state, force output) based on door position and external forces. This allows the check structure to adapt to different conditions: on level ground the member remains lightly compressed for normal retention, while on hills the increased compression provides additional holding force to counteract gravity, demonstrating parameter-based adaptability.
Solution Approach 2:
The check structure transitions from a static rigid design to a dynamic system where the compressible member continuously adjusts its state based on applied forces and door position. This dynamic behavior enables the structure to adapt to varying gravitational forces on hills versus level ground, providing appropriate retention force for each condition.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The compressible check structure effectively prevents the door from closing due to gravity or wind, ensuring it remains open until sufficient force is applied to move it, thus maintaining the door's position securely.
Implementation Method 1
The compressible check structure is adjacent to and spaced apart from the stop surface of the first bracket. The compressible check structure extends away from the first surface in an uncompressed state by a second predetermined distance that is greater than the first predetermined distance. The movement limiting surface the hinge arm contacts and compresses the compressible check structure during a portion of movement of the hinge arm between the first position and the second position.
Implementation Method 2
The compressible check structure is fixed in position along a portion of the first surface of the first bracket. The compressible check structure extends away from the first surface in an uncompressed state by a second predetermined distance that is greater than the first predetermined distance.
Data Source
AI summary
A vehicle door hinge structure includes a first bracket, a second bracket, a hinge arm and a compressible check structure. The hinge arm has a first end that s attached to the first bracket for pivoting movement about a first pivot axis. The second bracket is attached to a second end of the hinge arm for pivoting movement about a second pivot axis. The compressible check structure is fixed in position to the first bracket. The compressible check structure is adjacent to and spaced apart from a stop surface of the first bracket. The compressible check structure extends upward away from a surface of the first bracket in an uncompressed state. However, a movement limiting surface of the hinge arm contacts and compresses the compressible check structure during a portion of movement of the hinge arm.