Frame Structure with Low Expansion Plastic Cavity
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Solution Overview
Problem
Frame structures are prone to damage due to expansion and contraction caused by changes in water and oxygen environments or temperature, as their materials have high expansion coefficients, leading to deformation and affecting their appearance and service life.
Innovation Solution
A frame structure with an injection cavity filled with a plastic material having a lower expansion coefficient than the frame bar material, where the injection cavity is designed with non-uniform cross-sections and multiple connection and node cavities to resist expansion and contraction, and a screw is connected through the node cavity to secure the plastic material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If materials with high expansion coefficients are used for the frame structure, then the frame structure has good performance in certain aspects, but the frame structure is prone to expansion and contraction damage when water, oxygen environment and temperature change
Solution Approach 1:
The frame bar is constructed as a composite structure with an outer layer of frame bar material and an inner layer of plastic material. This composite structure combines the advantages of both materials: the outer layer provides structural strength and durability, while the inner plastic layer has a lower expansion coefficient that compensates for the expansion and contraction of the outer frame bar material, thereby reducing overall deformation and damage.
Solution Approach 2:
The invention changes the expansion coefficient parameter of the frame structure by introducing plastic material with a lower expansion coefficient inside the frame bar. This parameter change allows the frame structure to resist expansion and contraction forces better, maintaining dimensional stability in changing environmental conditions.
2Ease of manufacture
If the injection cavity has a non-uniform cross-section, then the plastic material can be effectively injected and distributed, but the manufacturing process becomes more complex
Solution Approach 1:
The injection cavity is designed with non-uniform cross-section, where the cross-sectional area varies along the length of the frame bar. This local variation in geometry allows for optimized plastic material distribution and injection flow patterns, ensuring complete filling and proper bonding while managing manufacturing complexity through targeted geometric modification rather than uniform structure.
3Reliability
If the plastic material is filled in the injection cavity, then the expansion and contraction is resisted, but the manufacturing process time increases
Solution Approach 1:
The injection cavity is pre-formed within the frame bar structure before the plastic material is injected. This preliminary preparation of the cavity structure allows for efficient and rapid injection of the plastic material in subsequent steps, minimizing the overall manufacturing time while ensuring the plastic material is properly positioned to resist expansion and contraction.
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 frame structure effectively resists expansion and contraction, maintaining its original form and extending its service life by using a plastic material with a lower expansion coefficient, which is not easily damaged by external forces and preserves the original surface texture.
Implementation Method 1
an expansion coefficient of the plastic material is lower than an expansion coefficient of the material from which the frame bar is made
Data Source
AI summary
A frame structure, a method for manufacturing the same and a device is provided. The frame structure includes at least one frame bar, an injection cavity and a plastic material; the injection cavity is located in an interior of the frame bar and extends in a length direction of the frame bar, and the plastic material is filled in the injection cavity, wherein an expansion coefficient of the plastic material is lower than an expansion coefficient of the material from which the frame bar is made.