Bracket Notch Orientation for Vibration Isolation
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Solution Overview
Problem
Conventional supporting devices for in-vehicle mounted objects, such as fluid-pressure units, fail to effectively suppress vibrations during vehicle movement, leading to increased noise and stress in brake tubes due to the separation of elastic members from notches during vertical vibrations.
Innovation Solution
A supporting device with a bracket featuring a side-plate part and elastic members, where the notch is oriented such that it does not intersect with the plane containing the line passing through the center of the opening and extending in the main vibrating direction, preventing the elastic members from moving out of the opening and maintaining contact, thus reducing vibration transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the notches open in the vertical direction (main vibrating direction), then the elastic members can be easily installed and the bracket structure is simple, but the elastic members separate from the notches during vibration, causing increased vibration and noise
Solution Approach 1:
The notch is designed to open in a direction perpendicular to the main vibrating direction (horizontal direction) rather than parallel to it (vertical direction). This asymmetric orientation prevents the elastic member from separating from the notch during vertical vibration, as the notch walls provide lateral constraint. The elastic member remains engaged with the notch while still allowing vertical movement for vibration isolation, thus resolving the contradiction between easy installation and vibration suppression.
2Object-affected harmful factors
If the elastic members are allowed to move freely to accommodate vibration, then vibration isolation is improved, but the elastic members may disengage from the bracket, worsening the vibration control
Solution Approach 1:
By orienting the notch perpendicular to the main vibrating direction, the design creates asymmetric constraints: the notch allows free movement in the vibration direction (vertical) while providing rigid constraint in the perpendicular direction (horizontal). This ensures the elastic member remains engaged with the notch during vibration cycles, maintaining reliable connection while still achieving vibration isolation through elastic deformation.
3Volume of moving object
If the bracket uses a compact three-point support structure, then space utilization is improved, but the structure may not provide sufficient vibration suppression in all directions
Solution Approach 1:
The notch is oriented perpendicular to the main vibrating direction, introducing a dimensional constraint strategy. Instead of trying to suppress vibration in all directions with a complex multi-directional structure, the design uses the perpendicular orientation of the notch to constrain the elastic member laterally while allowing vertical vibration isolation. This dimensional approach achieves effective vibration suppression with a compact three-point support structure.
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 solution effectively suppresses vibrations and noise by retaining elastic members within the bracket, reducing stress in brake tubes and minimizing vibration transmission to the fluid-pressure unit, while also optimizing space usage with a three-point support structure.
Implementation Method 1
a first elastic member engaged with the first opening part so as to be provided between the bracket and the in-vehicle mounted object
Data Source
AI summary
A supporting device supports an in-vehicle mounted object on a vehicle body. The supporting device includes a bracket and an elastic member. The bracket has a side-plate part having an opening part. The elastic member is engaged with the first opening part so as to be provided between the bracket and the in-vehicle mounted object. The side-plate part includes a notch having one end connected to the opening part and the other end open outward. The notch does not intersect with a plane containing a line passing substantially a center of the opening part and extending in a main vibrating direction of the in-vehicle mounted object, the plane being substantially perpendicular to the side-plate part.