Bonnet Hinge Structure with Deviation Restricting Member
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Solution Overview
Problem
Conventional bonnet hinge structures for vehicles fail to stably maintain the position of the bonnet in all directions during collisions or impacts, as they are not designed to resist external forces from various angles effectively.
Innovation Solution
A bonnet hinge structure comprising a lower hinge member, an upper hinge member, and a rotation suppressing portion with a deviation restricting member that prevents the upper hinge member from rotating excessively, ensuring the bonnet's stability in the up-down, front-rear, and left-right directions by engaging at specific heights and using a connecting component to reinforce the structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional bonnet hinge structure with locking claw and engagement plate is used, then the hinge can resist external forces from the left-right direction, but it cannot stably maintain the bonnet position when forces come from the front-rear direction
Solution Approach 1:
The hinge arm is divided into two separate members: the upper hinge member and the lower hinge member. This segmentation allows each member to be optimized for specific functions - the upper member handles vertical loading while the lower member with deviation restricting member handles lateral forces, providing comprehensive multi-directional stability.
Solution Approach 2:
The deviation restricting member extends in the vehicle width direction (lateral dimension) to prevent lateral movement of the hinge arm, while the rotation suppressing portion operates in the vertical dimension. This multi-dimensional constraint system comprehensively restrains the hinge arm against forces from any direction.
2Ease of operation
If the upper hinge member is allowed to rotate freely to support the bonnet, then the bonnet can open and close smoothly, but the hinge structure cannot prevent excessive rotation during collisions
Solution Approach 1:
The hinge structure dynamically adapts its constraints based on operational conditions. During normal operation, the upper hinge member rotates freely on the rotation shaft for smooth bonnet movement. During impact, the deviation restricting member engages to prevent excessive rotation, providing conditional constraint that maintains both operability and safety.
Solution Approach 2:
The rotation suppressing portion with deviation restricting member is pre-configured to counteract excessive rotation before it can cause damage. The deviation restricting member is positioned to engage with the lower hinge member when lateral deformation occurs, preliminarily preventing the harmful rotation effect during collision.
3Reliability
If the deviation restricting member is positioned at the second height to prevent rotation, then the hinge can resist lateral forces, but the structure becomes more complex
Solution Approach 1:
The deviation restricting member is integrated as part of the lower hinge member structure, and the rotation suppressing portion is combined with the hinge assembly. This merging approach adds the lateral constraint function without requiring completely separate components, thereby reducing overall structural complexity while maintaining reliability.
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 structure effectively maintains the bonnet's position in all directions during collisions or impacts by suppressing excessive rotation and movement, enhancing stability and position retention.
Implementation Method 1
The upper hinge member is pivotally connected to the lower hinge member in a manner of being able to rotate to a first height relative to the lower hinge member in the up-down direction
Implementation Method 2
When the upper hinge member is deformed in the left-right direction of the vehicle body, the deviation restricting member is in contact with the upper hinge member at a position of the second height that is lower than the first height from the top of the upper hinge member, and prevents the upper hinge member from rotating
Data Source
AI summary
The disclosure provides a bonnet hinge structure. The bonnet hinge structure pivotally supports the bonnet to the vehicle body from the rear end of the bonnet, and includes: a lower hinge member fixed to the vehicle body; an upper hinge member fixed to the bonnet fixing portion of the bonnet, and pivotally connected to the lower hinge member in a manner of being able to rotate to a first height relative to the lower hinge member in the up-down direction of the vehicle body; and a rotation suppressing portion provided with a deviation restricting member. When the upper hinge member is deformed in the left-right direction of the vehicle body, the deviation restricting member comes into contact with the upper hinge member at a position of the second height lower than the first height from the top of the upper hinge member, and prevents the upper hinge member from rotating.