Spiral Elastic Body Structure for Rigid Linear Compressors
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Solution Overview
Problem
Conventional linear compressors using plate springs face limitations in increasing rigidity due to thickness constraints, leading to reduced efficiency, durability, and space utilization, with issues like stress concentration, manufacturing yield loss, and complex alignment of multiple springs.
Innovation Solution
The design incorporates a plurality of elastic units with spirally formed elastic portions, adjacent outer and inner portions, and slits, allowing for improved rigidity, reduced stress concentration, and simplified manufacturing, while minimizing interference and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the thickness of the plate spring is increased to improve rigidity, then the rigidity increases, but the manufacturing yield decreases due to increased material loss during punching
Solution Approach 1:
The plate spring is divided into multiple elastic portions that are punched separately, with each portion having a width greater than the plate spring thickness. This segmentation allows the use of wider punching areas that reduce material loss while achieving the required rigidity through the combined effect of multiple elastic portions.
Solution Approach 2:
The patent applies different width requirements to different parts of the plate spring structure. The elastic portions are given a width greater than the thickness to ensure adequate punching area and reduce material loss, while the overall structure maintains the necessary rigidity through the spiral configuration and arrangement of these portions.
2Stability of the object's composition
If multiple coil springs are used to reduce eccentricity and tilting, then the stability improves, but the device complexity increases and miniaturization becomes difficult
Solution Approach 1:
Multiple elastic portions are integrated into a single plate spring structure rather than using separate coil springs. The multiple elastic portions work together as one unified component, providing the necessary stability and eccentricity reduction while maintaining a simple overall structure that enables miniaturization.
Solution Approach 2:
The patent transitions from using multiple separate three-dimensional coil springs to a two-dimensional plate spring with multiple elastic portions. This dimensional change simplifies the structure, reduces complexity, and enables easier alignment and assembly while still achieving the required stability through the spiral configuration of the elastic portions.
3Ease of manufacture
If the width of space between spiral elastic portions is increased to 1.5 times the thickness, then the punching process becomes safer, but the space efficiency and miniaturization capability are reduced
Solution Approach 1:
The patent changes the critical parameter from the space between elastic portions to the width of the elastic portions themselves. By making the elastic portion width greater than the plate spring thickness, adequate punching area is ensured without requiring excessive spacing, thereby improving space efficiency and enabling miniaturization while maintaining punching process safety.
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
Enhances rigidity and durability, improves manufacturing yield, simplifies alignment, and optimizes space efficiency by reducing the number of elastic bodies, minimizing interference and noise, and effectively transmitting elastic forces to the piston.
Implementation Method 1
each of the plurality of elastic units may include an elastic portion that is spirally formed while moving away from the axis
Data Source
AI summary
An elastic body and a linear compressor including the elastic body are provided. The elastic body according to an aspect of the present disclosure includes a plurality of elastic units disposed circumferentially around an axis, each of the plurality of elastic units has a corresponding shape, each of the plurality of elastic units includes an elastic portion that is spirally formed while moving away from the axis, an outer portion disposed on an outside of the elastic portion in a radial direction thereof, and an inner portion disposed on an inside of the elastic portion in the radial direction thereof, the outer portion is adjacent to the outer portion of an adjacent elastic unit, the inner portion is adjacent to the inner portion of the adjacent elastic unit, and a slit is formed between the plurality of elastic portions.