Antivibration Mount Bracket Positioning With a Common Locator
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Solution Overview
Problem
Existing antivibration devices for automobile power unit mounts require dedicated positioning members for different types of brackets, which have varying peripheral edge thicknesses, leading to increased complexity and costs.
Innovation Solution
The antivibration device incorporates a common positioning member that can be attached to multiple types of brackets by adjusting the thickness of the peripheral edge portion of the attachment hole using protrusions, allowing for uniform attachment without altering the entire bracket's thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If dedicated positioning members are prepared for multiple types of brackets with different peripheral edge thicknesses, then the positioning accuracy is improved, but the device complexity and manufacturing costs increase
Solution Approach 1:
The positioning member is designed with a universal structure that can accommodate multiple types of brackets with different peripheral edge thicknesses. The attachment hole is formed with a adjustable mechanism that allows the positioning member to adapt to various thickness variations without requiring dedicated positioning members for each bracket type, thereby reducing device complexity while maintaining positioning accuracy.
Solution Approach 2:
The positioning member incorporates an adjustable parameter mechanism that allows modification of the attachment hole dimensions or positioning features based on the specific bracket type. This enables a single positioning member design to handle multiple bracket variations by changing certain parameters rather than creating entirely different positioning members for each case.
2Manufacturing precision
If the thickness of the entire bracket is altered to accommodate different positioning member requirements, then the positioning accuracy is improved, but the structural integrity and strength of the bracket are compromised
Solution Approach 1:
Instead of changing the thickness of the entire bracket, the invention applies localized thickness adjustments only at the specific region where the attachment hole is formed. This local quality change allows the positioning member to achieve accurate positioning while the rest of the bracket maintains its original structural integrity and strength characteristics.
3Manufacturing precision
If multiple types of positioning members are manufactured for different bracket types, then the positioning accuracy is improved, but the manufacturing costs and production time increase
Solution Approach 1:
The positioning member is designed as a universal component that can be used across multiple bracket types without requiring separate manufacturing processes for each variant. This universality simplifies the manufacturing workflow, reduces the number of different part numbers to manage, and improves production efficiency while maintaining the necessary positioning accuracy through adaptive features.
Data Source
AI summary
An antivibration device includes a bracket fixed to an antivibration connection target member. A positioning member attached to an attachment hole of the bracket includes a positioning protruding portion inserted into a positioning hole of the antivibration connection target member and positioning the bracket; and a cylindrical attachment portion protruding from the positioning protruding portion and inserted into the attachment hole. The attachment portion has a locking claw protruding toward the outer periphery. The positioning member is positioned with respect to the bracket by sandwiching a peripheral edge portion of the attachment hole between the positioning protruding portion and the locking claw. The peripheral edge portion of the attachment hole has a protrusion that protrudes in the penetrating direction of the attachment hole to adjust and set the thickness of the peripheral edge portion.