Resin Fastening Structure for Substrate Container
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Solution Overview
Problem
Conventional fastening methods for resin members in substrate storing containers, such as threaded fastening and press fitting, are prone to loosening under repetitive loads, vibrations, or impacts, leading to insufficient fastening and assembly errors due to precision requirements.
Innovation Solution
A structure that fastens resin members using molten resin, where a recess in one member and a protrusion with a through-hole in another member are filled with molten resin, creating a stable bond that resists loosening and dislocation even under vibration or impact, without the need for precise alignment or torque.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If threaded fastening is used to install members to the container main body, then the members can be securely fastened, but the fastening portion is prone to loosening under repetitive loads, vibrations, or impacts
Solution Approach 1:
The patent replaces the mechanical threaded fastening system with a chemical bonding system using resin. The resin is injected into the recess to bond the member to the container main body, eliminating screws and threaded connections that are susceptible to loosening under vibration and impact loads.
Solution Approach 2:
The patent changes the physical state of the resin from liquid (injected state) to solid (cured state) to create the fastening bond. This phase change allows the resin to initially flow and fill the recess completely, then harden to form a strong, vibration-resistant connection between the member and container main body.
2Ease of manufacture
If press fitting is used to fasten members, then the members can be installed without threading, but the press-fit portion is prone to dislocation under repetitive loads and vibrations
Solution Approach 1:
The patent replaces the mechanical press-fit system with a chemical resin bonding system. Instead of relying on friction and geometric interference that can dislocate under load, the resin creates a bonded connection that resists dislocation while maintaining assembly simplicity through injection molding.
Solution Approach 2:
The resin acts as an intermediary material between the member and the container main body. It fills the recess and creates a bonding interface that distributes loads and prevents direct mechanical contact that would otherwise cause dislocation in press-fit applications.
3Strength
If threaded fastening or press fitting is used, then members can be fastened to the container main body, but precise positioning and alignment are required during assembly
Solution Approach 1:
The resin's viscosity changes from low (liquid state during injection) to high (solid state after curing). This parameter change allows the resin to flow into the recess and accommodate minor misalignments during assembly, then harden to create a strong bond without requiring precise alignment like mechanical fastening systems.
Solution Approach 2:
The resin bonding provides localized adaptation within the recess area. The liquid resin can flow to fill gaps and accommodate local variations in positioning, while the cured resin maintains strong bonding properties, eliminating the need for high precision alignment required by threaded or press-fit methods.
4Strength
If threaded fastening is used, then members can be securely attached, but assembly time is consumed due to positioning and torque requirements
Solution Approach 1:
The patent replaces the multi-step mechanical fastening process (positioning, inserting screw, tightening to torque) with a single-step resin injection process. The resin is injected into the recess and automatically bonds the member, eliminating the time-consuming operations of precise positioning and torque application.
Solution Approach 2:
The resin bonding system is self-aligning and self-tightening. The liquid resin flows to fill the recess and bond surfaces automatically, then hardens to create the fastening connection without requiring external positioning or torque application, significantly reducing assembly time and improving productivity.
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 provides a stable fastening state that resists loosening and dislocation, reduces assembly errors, and simplifies the assembly process by eliminating the need for precise positioning and torque, while also improving water drainage and reducing component count.
Implementation Method 1
wherein the first resin member includes a recess that is indented from an outer side to an inner side of the substrate storing container, and a protrusion that protrudes outward at an inner side of the recess; in which the second resin member includes an insertion part that can be inserted to the recess from outwards of the first resin member, and the insertion part includes a through-hole that penetrates from a side far from the first resin member to a side near to the first resin member; and in which, in a state in which the recess of the first resin member opens upwards and the insertion part of the second resin member is inserted into the recess, molten resin that is poured into the through-hole of the insertion part from above is filled from a bottom face of the recess up to an outer peripheral face of the protrusion and an inner peripheral face of the through-hole
Data Source
AI summary
The upper wall is provided with a recess indented from the outside toward the inside of the container main body, and a protrusion projecting outward on the inside of the recess. The top flange is provided with an insertion part which can be inserted into the recess from the outside of the upper wall. The insertion part is provided with a through-hole capable of penetrating from the side further from the upper wall to the side nearer the upper wall. With the recess in the upper wall opening upward and the insertion part of the top flange inserted into the recess, a molten resin poured into the through-hole of the insertion part from above fills the recess from the bottom surface thereof up to the outer peripheral surface of the protrusion and the inner peripheral surface of the through-hole.