Bending Structure With Thin-Part Laser Welding Access
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Solution Overview
Problem
Conventional methods cannot attach an end member to a bending part in an axial direction using laser welding due to the inability to irradiate laser light between the end of the bending part and the end member.
Innovation Solution
A bending structure is created with a thin part formed at the end member, exposed via an exposing part, allowing laser welding to join the thin part to the bending part, enabling attachment of the end member to the bending part in an axial direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If laser welding is used to attach the end member to the bending part, then bonding strength and process simplicity are improved, but the inability to irradiate laser light from the laminating direction prevents the welding process from being performed
Solution Approach 1:
The end member is segmented into a head portion and a thin portion, where the thin portion has reduced thickness to allow laser light penetration. This segmentation enables the laser welding process to access and weld the interface between the end member and bending part through the exposing part, resolving the contradiction between achieving strong bonding and maintaining welding accessibility.
Solution Approach 2:
The end member exhibits local quality variation with different thicknesses: the head portion maintains sufficient thickness for structural integrity, while the thin portion has reduced thickness specifically at the welding interface to enable laser light transmission. This local thickness variation allows the laser welding process to penetrate through the exposing part and bond the components effectively.
2Ease of manufacture
If the end member is made thinner to allow laser light penetration, then laser welding becomes possible, but the structural integrity and strength of the end member may be compromised
Solution Approach 1:
The end member is divided into a head portion with sufficient thickness for structural strength and a thin portion with reduced thickness for laser penetration. This segmentation allows the thin portion to enable welding accessibility while the head portion maintains the overall structural integrity of the end member.
Solution Approach 2:
The end member has non-uniform thickness distribution with the thin portion specifically located at the welding interface to allow laser light transmission, while other portions maintain sufficient thickness for structural requirements. This local quality variation resolves the contradiction between welding accessibility and structural integrity.
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 method allows for a strong and reliable attachment of the end member to the bending part using laser welding, overcoming the limitations of conventional techniques.
Implementation Method 1
The exposing part is provided at the end member and exposes the thin part in the axial direction in a manner capable of being irradiated with a laser light of laser welding
Data Source
AI summary
A bending structure includes a bending part that is elastically bendable with respect to the axial direction, a movable part serving as an end member that is attached to an end of the bending part in the axial direction, a thin part that is formed at the movable part and is thinner than the movable part in the axial direction, a notch that is provided at the movable part and exposes the thin part in the axial direction in a manner capable of being irradiated with a laser light of laser welding, and a welding part that is formed at the thin part by laser welding and joins the thin part to the bending part.