Vehicular Mount Fastening Structure for Bolt Loosening Resistance
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Solution Overview
Problem
The existing fastening structures for vehicular mounting systems face issues with stability and stiffness due to the upward-downward orientation of support brackets, leading to increased manufacturing costs and weight, as well as potential loosening of fastening bolts under external forces, which affects the structural integrity and vibration attenuation.
Innovation Solution
The proposed fastening structure incorporates a counterforce angle formation portion on the mounting seating surface of the mount core, guiding external forces toward a tensile direction through the center bolt, preventing bolt loosening and enhancing stability without the need for high-stiffness materials or additional weight, by distributing loads effectively before deformation occurs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the support bracket is mounted in the upward-downward direction with the center bolt, then the workability in manufacturing factory is improved, but the stiffness of the structure is reduced
Solution Approach 1:
The patent applies asymmetry by changing the mounting orientation from the conventional upward-downward direction to a leftward-rightward direction that is asymmetric relative to the engine mount. This asymmetric reorientation allows the support bracket to maintain structural stiffness while preserving manufacturing workability, as the new orientation enables better load distribution without requiring excessive material thickness
2Ease of operation
If the support bracket is mounted in the upward-downward direction, then the assembly can be completed with typical bolts, but the height difference between connection points reduces the stability of fastening
Solution Approach 1:
The patent inverts the conventional mounting approach by reversing the orientation direction from upward-downward to leftward-rightward. This inversion eliminates the height difference problem between connection points while maintaining assembly simplicity, as the support bracket can still be fastened using typical bolts without requiring complex alignment procedures
3Strength
If the bracket thickness is increased to compensate for stiffness reduction, then the structural stiffness is improved, but the weight and production costs increase
Solution Approach 1:
The patent applies parameter changes by modifying the mounting orientation parameters (angular orientation and positional arrangement) rather than changing the dimensional parameters (thickness and material properties). This parameter transformation allows the bracket to achieve adequate stiffness with standard thickness, avoiding the need to increase weight and production costs
Data Source
AI summary
A fastening structure for a vehicular mounting system includes: a mount core including an inner core and coupled to a vehicle body by being fixed thereto, a center bolt protruding in an upward direction from the inner core, and a support bracket mounted on the inner core in such a manner as to come into contact therewith. The support bracket is fastened to the mount core using the center bolt and coupled to a powertrain of a vehicle by being fixed thereto. In particular, the center bolt passes through the inside of the support bracket, and a mounting seating surface, on which the support bracket is seated, is formed on an upper surface of the inner core. The mounting seating surface includes a counterforce angle formation portion.