Shock Absorber Mounting Member Welding Access
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Solution Overview
Problem
The existing shock absorbers face difficulties in performing reinforcement welding at the bonding portion due to the small space between the cylindrical mounting member and the capping member, making the welding process challenging.
Innovation Solution
The shock absorber features a cylindrically-shaped mounting member with a smaller outer diameter at the end surface compared to the center portion, allowing for easier reinforcement welding by widening the space at the bonding portion, enabling stable bonding and preventing the welding bead from protruding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If reinforcement welding is performed at the bonding portion of the mounting member, then the strength at the bonding portion is enhanced, but the welding becomes difficult due to the small space between the outer peripheral surface of the mounting member and the capping member
Solution Approach 1:
The mounting member features a localized diameter reduction at the end surface side, creating a smaller outer diameter portion specifically at the bonding area. This local geometric modification provides sufficient welding space for reinforcement welding at the bonding portion while maintaining the overall cylindrical structure of the mounting member.
Solution Approach 2:
The invention introduces a dimensional variation along the axial direction of the mounting member by reducing the outer diameter at the end surface side. This creates a stepped or tapered configuration that provides additional clearance space in the radial direction at the bonding portion, enabling welding access without compromising the structural integrity of the mounting member.
2Device complexity
If the outer peripheral surface of the mounting member has an equal cylindrical shape in full width, then the structure is simple, but the space between the outer peripheral surface and capping member is small making welding difficult
Solution Approach 1:
Instead of making the entire mounting member complex, the invention applies a localized diameter reduction only at the end surface side where bonding occurs. The majority of the mounting member maintains its simple cylindrical shape, preserving structural simplicity while providing the necessary welding space at the critical bonding portion.
3Ease of manufacture
If the outer diameter at the end surface side is reduced, then welding space is increased making reinforcement welding easier, but the bonding area is reduced
Solution Approach 1:
The mounting member is segmented into two distinct zones along its axial length: a reduced-diameter zone at the end surface side designed for welding operations, and a full-diameter zone that provides the bonding surface. This segmentation allows each zone to be optimized for its specific function without compromising the other.
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 facilitates easier and more effective reinforcement welding at the bonding portion, enhancing the strength of the bonding area while ensuring a stable bond between the mounting member and the capping member.
Implementation Method 1
reinforcement welding is performed at the end surface side of the mounting member at a bonding portion of the mounting member
Data Source
AI summary
A shock absorber includes a cylindrically-shaped mounting member having an outer peripheral surface bonded at one end or both ends, the mounting member having an outer diameter at an end surface side smaller than an outer diameter at a center portion, and a reinforcement welding performed at the end surface side of the mounting member at a bonding portion of the mounting member.