Multilayer Wind Spring with Fixed Wound Portions
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Solution Overview
Problem
Multilayer wind springs for display supports have a short service life due to frequent arching of inner-layer metal sheets and require complex and inefficient lubrication processes to prevent arching, leading to high maintenance costs and reduced efficiency in manufacturing.
Innovation Solution
The multilayer wind spring design includes tightly attached and wound elastic metal sheets with unmovable wound portions fixedly arranged to prevent dislocation, eliminating the need for lubrication between sheets and simplifying the manufacturing process by integrating a semi-restricted structure that allows for stress relief during unwinding and winding, thereby extending the service life and reducing maintenance costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If multiple elastic metal sheets are stacked and wound to form a multilayer wind spring, then the space occupied by the spring is reduced and the supporting force is enhanced, but the inner-layer metal sheets frequently arch during use, resulting in very short service life
Solution Approach 1:
The elastic metal sheet is divided into three functional segments: a stretching connection portion (not involved in winding), a movable sheet portion (involved in winding and unwinding), and an unmovable wound portion (fixedly arranged). This segmentation allows the movable portion to provide elastic deformation for space reduction while the fixed unmovable wound portion prevents dislocation and arching, thereby maintaining reliability.
Solution Approach 2:
Different portions of the elastic metal sheet are given different properties: the stretching connection portion remains in initial state for connection, the movable sheet portion is designed to undergo winding and unwinding for space compression, and the unmovable wound portion is fixedly arranged to prevent arching. This local differentiation resolves the contradiction between space reduction and service life extension.
2Reliability
If lubricating oil is applied between adjacent elastic metal sheets to prevent arching, then the service life is extended, but the oil application procedure becomes complicated and inefficient
Solution Approach 1:
The unmovable wound portions of all elastic metal sheets are fixedly arranged relative to one another, creating a self-aligning structure that prevents dislocation and arching without requiring external lubrication. The structure itself provides the protective function, eliminating the need for additional lubricating oil application steps and simplifying the manufacturing process.
3Length of stationary object
If the stand column is made ultra-thin to meet design requirements, then the appearance and space utilization are improved, but the space for accommodating the constant force spring is insufficient
Solution Approach 1:
Multiple elastic metal sheets are stacked and wound together in a nested configuration, with each sheet contributing to the overall spring structure. This nested arrangement maximizes the supporting force and space efficiency within the limited space of the ultra-thin stand column, allowing the spring to provide sufficient counterbalancing force while occupying minimal volume.
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 solution effectively prevents arching and prolongs the service life of multilayer wind springs, allowing for their wider application while reducing the complexity and cost of manufacturing, resulting in a more efficient and reliable supporting mechanism with improved structural integrity and reduced space occupation.
Implementation Method 1
each of the elastic metal sheet comprises: a stretching connection portion which is not involved in winding and unwinding and is always kept in an initial state, a movable sheet portion which is involved in winding and unwinding, and an unmovable wound portion which is not involved in stretching and is always kept in a wound state
Data Source
AI summary
A multilayer wind spring for a display support and a lifting support thereof, the multilayer wind spring is formed by tightly attaching and winding multiple elastic metal sheets, each of the elastic metal sheets comprises: a stretching connection portion which is not involved in winding and unwinding and is always kept in an initial state, a movable sheet portion which is involved in winding and unwinding, and an unmovable wound portion which is not involved in stretching and is always kept in a wound state, the stretching connection portion, the movable sheet portion, and the unmovable wound portion are formed integrally and sequentially arranged in an unwinding direction, and the elastic metal sheets of the unmovable wound portions are arranged fixedly relative to one another.