Utility Vehicle Hood Hinge Structure for Automatic Alignment
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Solution Overview
Problem
The installation of heavy engine compartment hoods on utility vehicles, such as agricultural tractors, is challenging due to limited access and the difficulty in aligning and securing hinge structures with corresponding recesses on the frame, requiring manual control of locking devices during assembly.
Innovation Solution
A hinge structure with a cylindrical projection and a resilient locking mechanism, featuring a chamfered nose portion and dual indentations, allows for easy alignment and secure engagement of the hood to the vehicle frame without the need for specialized tools, facilitated by a spring-loaded locking device that ensures proper positioning and assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the hood is made substantial weight to protect the engine compartment, then the protective function is improved, but the difficulty of alignment and installation increases
Solution Approach 1:
The hinge structure includes a projection with a recess that receives a locking device during assembly. The locking device is spring-loaded to automatically engage with the projection, eliminating the need for manual alignment control. This preliminary positioning mechanism allows the heavy hood to be easily aligned and secured without requiring precise manual intervention.
2Reliability
If the hinge structure requires locking device engagement, then the security of attachment is improved, but the complexity of assembly increases
Solution Approach 1:
The locking device is spring-loaded and automatically engages with the projection recess without requiring manual intervention. The spring force automatically pushes the locking device into the recess to secure the hood, and the same spring force automatically disengages it when the hood is opened. This self-service mechanism simplifies assembly while maintaining secure attachment.
3Reliability
If the locking device extends into the projection indentation at an angle, then the locking reliability is improved, but the ease of installation deteriorates
Solution Approach 1:
The spring-loaded locking device automatically orients itself at the required angle to the projection axis as it engages with the recess. The spring force drives the locking device into the recess, automatically achieving the optimal angular orientation for reliable locking without requiring manual alignment or specialized installation tools.
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 hinge structure simplifies the assembly process by allowing easy alignment and secure attachment of the hood, reducing installation time and preventing accidental disengagement, while maintaining structural integrity.
Implementation Method 1
a spring-loaded locking device that ensures proper positioning and assembly
Data Source
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AI summary
A hinge structure (30) provides the pivoting mount for the bonnet (26) of an agricultural or similar vehicle. The hinge structure (30) comprises a mounting rail (32) configured to be securable to the bonnet (26) and a cast console or bulkhead (34) securable to the vehicle frame. The mounting rail (32) and cast console (34) are pivotally interconnected for rotation about an axis (A). The hinge structure (30) comprises at least one bolt or hinge pin in the form of a projection (36), which projection is a generally cylindrical body having a longitudinal axis coincident with the given axis (A) when installed. The projection (36) is received in a bore (38) in the cast console (34), and movable in the axial direction (A) to engage an aperture (40) in the mounting rail (32) where it is held by a sprung locking mechanism (46). Preferably, the vehicle comprises a pair of the hinge structures (30), with the pair sharing a common cast console (34), and the two mounting rails (32) being attached to respective ones of the left and right sides of the bonnet (26).