Dual-Actuator Telescopic Adjuster for Long Stroke in Tight Space
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Solution Overview
Problem
Traditional telescopic adjusters face a challenge in achieving a longer stroke within limited space constraints, as the length of the outer cylinder tube is directly proportional to the stroke size, limiting their applicability in space-restricted environments.
Innovation Solution
The design incorporates two linear actuators and coaxially arranged cylinder tubes with external and internal threads, allowing the second cylinder tube to extend beyond the first, increasing the stroke length while maintaining the same height, through a mechanism of interconnected screws and guiding rods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a longer outer cylinder tube is adopted to increase stroke, then the stroke length is improved, but the device height increases and space limitation is violated
Solution Approach 1:
The patent implements a nested structure where the second outer cylinder tube is placed inside the first outer cylinder tube, and the second linear actuator is nested within the first linear actuator assembly. This allows the stroke length to be extended through telescopic extension while maintaining a compact overall height when retracted, effectively resolving the contradiction between stroke length and device height.
Solution Approach 2:
The patent transitions from a single-dimensional linear extension to a multi-dimensional telescopic structure. By arranging two linear actuators in parallel and using coaxial cylinder tubes, the system achieves extended stroke in one dimension while controlling the height in another dimension through the nested configuration, allowing independent optimization of both parameters.
2Length of moving object
If a longer outer cylinder tube is used to achieve longer stroke, then the stroke is improved, but the device complexity increases
Solution Approach 1:
The patent divides the single actuator system into two separate linear actuators working in parallel, each responsible for a portion of the total stroke. The cylinder tube is also segmented into nested sections. This segmentation allows the system to achieve longer total stroke while keeping each individual component compact and manageable, reducing overall structural complexity.
Solution Approach 2:
The connecting platform serves multiple functions: it connects the two linear actuators, provides mounting surfaces, and acts as a structural support element. The guiding rods simultaneously provide mechanical guidance and structural reinforcement. This multi-functionality reduces the need for additional specialized components, thereby controlling device complexity.
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 without expanding its height, overcoming space limitations and enabling greater extension within the same spatial constraints.
Implementation Method 1
The first linear actuator includes a first screw... The first screw may push the connecting platform to move along the first screw... The second linear actuator includes a second screw... the second screw may push up the second outer cylinder tube to protrude from the first outer cylinder tube
Data Source
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.