Chassis Stabilizer Coupling Weld for Strong Low-Heat Joints
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Solution Overview
Problem
Existing stabilizers for motor vehicle chassis are not dense, robust, and flexible, and their manufacturing is not efficient.
Innovation Solution
A stabilizer design featuring a coupling element with a conical or flange-shaped joining section welded to the stabilizer tube using capacitor discharge or laser welding, allowing detachable connection and adaptation to different diameters, reducing material weakening and ensuring airtight or watertight seals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional welding methods are used to connect the coupling element to the stabilizer tube, then a strong connection is achieved, but the heat-stressed joining zone causes material-weakening structural changes
Solution Approach 1:
The patent replaces conventional thermal welding processes with capacitor discharge welding, which uses electrical discharge and mechanical pressure instead of sustained thermal heating. This substitution eliminates the heat-affected zone and associated material-weakening structural changes while maintaining strong connection between the coupling element and stabilizer tube.
Solution Approach 2:
Capacitor discharge welding employs periodic, pulsed electrical discharge rather than continuous heating. The welding process occurs in controlled bursts, allowing the material to be joined without experiencing prolonged thermal stress that would cause microstructural degradation and strength reduction.
2Reliability
If a stabilizer design is made robust and dense, then durability is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The stabilizer is divided into modular components (stabilizer tube, coupling elements, connecting elements) that can be manufactured separately and assembled through simple insertion and welding processes. This segmentation allows each component to be optimized independently while maintaining overall durability, and simplifies manufacturing by enabling parallel production and easier quality control.
Solution Approach 2:
The patent changes the welding process parameters from conventional thermal welding to capacitor discharge welding, which operates at different energy levels and time scales. This parameter change enables robust connections to be achieved with shorter process times and less thermal input, thereby maintaining durability while reducing manufacturing complexity and cost.
3Adaptability or versatility
If the coupling element is designed to adapt to different stabilizer tube diameters, then versatility is improved, but the connection reliability may be compromised
Solution Approach 1:
The coupling element is designed with a universal conical joining section that can accommodate multiple stabilizer tube diameters. The conical geometry allows the coupling element to interface reliably with tubes of varying sizes while maintaining consistent connection quality through the capacitor discharge welding process, thus achieving versatility without compromising reliability.
4Ease of manufacture
If a radial gap is formed between the insertion section and inner wall of the stabilizer tube, then assembly is simplified, but structural rigidity may be reduced
Solution Approach 1:
The insertion section is designed with a fit that allows a small radial gap, creating a flexible accommodation for manufacturing tolerances and thermal expansion. The capacitor discharge welding then creates a rigid bonded connection that compensates for the gap, maintaining structural rigidity while preserving assembly simplicity.
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 design provides a stable, flexible, and easily manufacturable stabilizer that can withstand high tension forces while being adaptable to various vehicle requirements, with reduced manufacturing costs and enhanced durability.
Implementation Method 1
the coupling element is joined to the stabilizer tube via a welded connection produced by means of capacitor discharge welding between the conical joining section and the stabilizer tube
Implementation Method 2
the coupling element is joined to the stabilizer tube via an axial welded connection produced by means of laser welding between the flange-shaped joining section and an end face of the stabilizer tube
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
The invention relates to a stabilizer for a chassis of a motor vehicle, comprising a stabilizer tube (2) and a coupling element (5) arranged at a first end section (3) with an insertion section (19), a joining section (6) and a connecting means (7) for detachably connecting a connecting element (8), wherein a radial gap (21) is formed between the insertion section (19) and the stabilizer tube (2), and wherein the coupling element (5) is connected to the stabilizer tube (2) via a welded joint (30) produced by means of capacitor discharge welding or laser welding between the joining section (6) and the stabilizer tube (2).