Nested Telescopic Adjuster Structure for Longer Stroke in Tight Space
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional telescopic adjusters face challenges in achieving a longer stroke within limited space constraints, as the length of the outer cylindrical tube determines the stroke size, limiting their applicability in space-restricted environments.
Innovation Solution
The design incorporates two linear actuators and coaxially arranged outer cylindrical tubes with internal and external threads, allowing the second tube to extend from the first, enabling increased stroke length without increasing the overall height, through the use of motors and guiding rods to control the movement and prevent excessive extension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a longer outer cylindrical tube is adopted to achieve a longer stroke, then the stroke length is improved, but the space occupied and overall height increase
Solution Approach 1:
The patent implements a nested structure where the second outer cylindrical tube is placed inside the first outer cylindrical tube, and the second screw is placed inside the second outer cylindrical tube. This nesting arrangement allows the stroke length to be extended through sequential extension of nested tubes without proportionally increasing the overall volume or height, as the tubes occupy overlapping spatial envelopes when retracted.
Solution Approach 2:
The patent divides the single tube extension into multiple segments (first outer cylindrical tube and second outer cylindrical tube) that can extend sequentially. The first screw pushes the connecting platform, and the second screw pushes the second outer cylindrical tube to protrude from the first, creating segmented extension stages that achieve longer total stroke while maintaining compact retracted dimensions.
2Length of moving object
If a longer outer cylindrical tube is adopted to achieve a longer stroke, then the stroke length is improved, but the device complexity increases
Solution Approach 1:
The patent divides the extension mechanism into modular segments (first linear actuator with first screw, second linear actuator with second screw, nested tubes) that can be independently controlled. Each segment has its own motor and screw mechanism, allowing for controlled sequential extension that manages complexity through functional decomposition.
Solution Approach 2:
The patent implements dynamic control where the first and second motors can independently control the extension of the first and second outer cylindrical tubes. This dynamic control allows the system to achieve longer stroke through coordinated sequential operation rather than requiring a single complex long-stroke mechanism, managing complexity through temporal coordination of simpler components.
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 configuration effectively increases the stroke length of the telescopic adjuster within the same height space, overcoming traditional limitations and allowing for multiple stroke lengths by sequential extension of outer cylindrical tubes.
Implementation Method 1
The first linear actuator includes a first screw and a pair of first fixing rings. The first screw is capable of pushing the connecting platform to move along the first screw
Implementation Method 2
The second linear actuator includes a second screw and a second fixing ring. The second screw and the second outer cylindrical tube are movably arranged in the first outer cylindrical tube, and the second screw pushes up the second outer cylindrical tube to protrude from the first outer cylindrical tube
Implementation Method 3
the first guiding rods are arranged at two sides of the first screw and penetrate the connecting platform, so as to limit the connecting platform to linear movement
Implementation Method 4
the second guiding rods are located on two sides of the second screw and are fixed to the connecting platform. The second guiding rods pass through the third fixing ring, and the second fixing ring and the third fixing ring may limit a moving distance of the second outer cylindrical tube
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A telescopic adjuster including first and second linear actuators, a connecting platform and first and second telescopic levers is provided. The first linear actuator includes a first screw and a pair of first fixing rings. The first fixing rings are arranged at two respective ends of the first screw. The second linear actuator includes a second screw and a second fixing ring. The second fixing ring is arranged at the end of the second screw, relatively away from the connecting platform. The first and second linear actuators are arranged on the connecting platform in parallel. The first screw pushes the connecting platform to move along the first screw, and the first fixing rings limit a movement of the connecting platform. The first and second telescopic levers are coaxially arranged.