Stud Bolt Fixture With Elastic Vibration Suppression Pieces
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Solution Overview
Problem
Conventional stud bolt fixtures fail to effectively suppress vibration of stud bolts due to their rigidity, which is a challenge when using resin materials with lower rigidity to reduce costs and add functions, as they cannot adequately resist the loads on elastic engagement pieces and engagement claws during vehicle vibrations.
Innovation Solution
The stud bolt fixture incorporates elastically deformable vibration suppression pieces that project inwardly from the inner wall surface, displacing outwardly to provide a stronger pressing force on the stud bolt, reducing oscillation by utilizing a pressing surface that extends further than the elastic engagement pieces, and includes a deformation restriction portion to prevent excessive deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the resin material rigidity is reduced to decrease cost and add functions, then material cost decreases and functional versatility increases, but the ability to resist load on elastic engagement pieces and engagement claws during vibration deteriorates
Solution Approach 1:
The fixture is segmented into two distinct types of elastic pieces: engagement pieces for fixing the stud bolt and vibration suppression pieces for damping oscillation. This segmentation allows each component to be optimized for its specific function, enabling the use of lower rigidity resin materials while maintaining overall system performance through specialized component design.
Solution Approach 2:
The vibration suppression pieces are designed to dynamically respond to stud bolt oscillation by elastically deforming in the insertion direction. This dynamic behavior allows the pieces to absorb vibration energy and suppress oscillation, compensating for the reduced rigidity of the resin material and maintaining load resistance capability.
2Ease of manufacture
If the resin material rigidity is reduced to decrease cost and add functions, then material cost decreases and functional versatility increases, but the stability of fixation during vehicle vibration deteriorates
Solution Approach 1:
The fixture is segmented into two distinct types of elastic pieces: engagement pieces for fixing the stud bolt and vibration suppression pieces for damping oscillation. This segmentation allows each component to be optimized for its specific function, enabling the use of lower rigidity resin materials while maintaining overall system performance through specialized component design.
Solution Approach 2:
The vibration suppression pieces convert the harmful oscillation forces into beneficial elastic deformation, absorbing vibration energy and transforming it into harmless thermal energy through internal friction. This converts the harmful effect of vibration into a beneficial damping mechanism that enhances fixation stability.
3Object-affected harmful factors
If vibration suppression pieces are designed to displace outwardly more than elastic engagement pieces, then vibration suppression capability increases, but the complexity of the fixture structure increases
Solution Approach 1:
The vibration suppression pieces and engagement pieces are merged into a single integrated fixture body made of resin material, rather than being separate components. This merging reduces assembly complexity while maintaining the differentiated functions of vibration suppression and engagement through the elastic deformation characteristics of the integrated structure.
Solution Approach 2:
The pieces are designed with different elastic deformation parameters: vibration suppression pieces are configured to displace outwardly by a greater amount than engagement pieces when subjected to insertion forces. This parameter differentiation enables effective vibration suppression while maintaining a relatively simple integrated structure without requiring complex mechanical mechanisms.
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
This configuration effectively suppresses stud bolt vibration, reduces the load on elastic engagement pieces, and protects them from damage, allowing the use of resin materials with lower rigidity while maintaining effective fixation and vibration reduction.
Implementation Method 1
each vibration suppression piece is pushed out toward an outer peripheral side by the thread of the stud bolt to become elastically deformed
Implementation Method 2
presses the stud bolt toward the inner peripheral side more strongly than the elastic engagement piece
Data Source
AI summary
Vibration suppression pieces are provided at the same positions as elastic engagement pieces around an axis of the stud bolt so as to sandwich the stud bolt inserted into a body part, and each include a pressing surface. In an insertion and fixation state where the stud bolt is inserted into the body part, each vibration suppression piece is pushed out toward an outer peripheral side by the stud bolt to become elastically deformed such that the vibration suppression piece is displaced from an inner peripheral side toward the outer peripheral side to a greater extent than the elastic engagement piece. Accordingly, the pressing surface presses the stud bolt toward the inner peripheral side more strongly than the elastic engagement piece.