Resin-Filled Member Joining Under Pressure for Stronger Bonds
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing member joining methods using resin adhesives face challenges in securing joint strength due to internal stress generated during curing, particularly when joining different types of metals or metals with resins, leading to potential detachment.
Innovation Solution
A member joining method involving the placement of one member within another, filling a gap with molten resin, and applying pressure to cause elastic deformation of at least one member, maintaining pressure until the resin cures, which generates a reaction force to secure joint strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a resin adhesive is used to join members, then the joining process is simplified and can join different materials, but internal stress during curing causes detachment and reduces joint strength
Solution Approach 1:
The patent applies preliminary action by deforming the member before resin injection to generate elastic force in advance. The member is elastically deformed while the resin is injected, so that when the resin cures, the pre-generated elastic force counteracts the curing contraction stress, preventing detachment and ensuring strong joints.
2Manufacturing precision
If pressure is applied during resin filling, then the resin fills the gap completely and bonds improve, but the member may deform permanently instead of elastically
Solution Approach 1:
The patent applies parameter changes by carefully controlling the pressure application parameters - applying pressure during resin injection to ensure complete filling, then maintaining appropriate pressure during curing to sustain elastic deformation. The key is controlling the pressure magnitude and duration to keep the member in the elastic deformation range rather than causing permanent plastic deformation.
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 effectively secures joint strength by ensuring the resin receives elastic force from the deformed members, reducing the likelihood of detachment and improving the strength of the joint compared to non-continuous resin sections.
Implementation Method 1
filling a molten resin into the gap and applying pressure to the resin so as to cause at least one member of the first member or the second member to undergo elastic deformation
Implementation Method 2
applying pressure to the resin so as to cause at least one member of the first member or the second member to undergo elastic deformation... the resin resulting from curing receives elastic force from the at least one member... the resin generates reaction force toward the at least one member due to receiving elastic force from this member
Implementation Method 3
maintaining the pressure until the resin that has been filled into the gap has cured
Data Source
AI summary
A member joining method includes: a placement process of arranging a first member and a second member inserted into the first member so that a gap surrounding the second member is provided between the first member and the second member; a filling process of filling a molten resin into the gap and applying pressure to the resin so as to cause at least one member of the first member or the second member to undergo elastic deformation; and a pressure maintaining process of maintaining the pressure until the resin that has been filled into the gap has cured.