Actuation-Rod Jack Mechanism for Gradual Controlled Retraction
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Solution Overview
Problem
Conventional jacks require manual descent, causing user inconvenience.
Innovation Solution
A jack design featuring a body, actuation rod, and descending device with support sheets, drive grip, limiter, and resilient sheet mechanism that allows for gradual expansion and retraction by repeated pressing of an adjustment grip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual support is used to descend the jack, then the jack can be descended, but user convenience deteriorates
Solution Approach 1:
The jack automatically descends by utilizing its own structural components (actuation rod, support sheets, and gripping mechanism) to perform the descent operation without requiring external manual support. The system serves itself by converting the retraction motion into automatic descent through the interaction between the actuation rod and support sheets.
Solution Approach 2:
The actuation rod serves as an intermediary element that mediates between the user's gripping action and the descent motion. By interacting with the support sheets through the gripping mechanism, the actuation rod translates the retraction force into controlled descent without requiring direct manual support of the jack body.
2Ease of manufacture
If the jack structure is simplified, then manufacturing ease improves, but device functionality deteriorates
Solution Approach 1:
The actuation rod performs multiple functions: it serves as both the gripping surface for user operation and the mechanical element that drives the support sheets for expansion and retraction. This multi-functionality reduces the need for separate components while maintaining full operational capability.
Solution Approach 2:
The gripping mechanism and the drive mechanism are merged into a single integrated system where the actuation rod simultaneously provides the gripping surface and transmits the retraction force to move the support sheets, eliminating the need for separate gripping and driving components.
3Measurement precision
If the jack is designed for gradual expansion, then commodity handling precision improves, but operation time increases
Solution Approach 1:
The jack achieves gradual expansion through periodic gripping and releasing actions on the actuation rod. Each grip-release cycle produces a discrete increment of motion, allowing precise control over the expansion process while maintaining a reasonable operation speed through repeated cyclic actions.
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
Enables convenient, controlled expansion and retraction of the jack without manual support, facilitating easy handling of commodities.
Implementation Method 1
the actuation rod is inserted through the multiple first defining blocks, an end of the spring abuts against the multiple first defining blocks so that the multiple first defining blocks movably engages with the actuation rod, and the actuation rod is limited to move in the second moving direction
Implementation Method 2
The resilient sheet is received in a middle section of the interior of the body, and the body includes a holder defined in the interior thereof and aligned with the resilient sheet, a force gap is defined between the resilient sheet and the holder; the adjustment grip is rotatably connected on the bottom of the body and has an actuating segment configured to abut against the resilient sheet
Data Source
AI summary
A jack contains: a body, an actuation rod, and a descending device. The body includes a first support sheet formed on an end thereof, and the actuation rod is movably received in the body and includes a second support sheet corresponding to the first support sheet. The actuation rod drives the first support and the second support to move away from each other in a first moving direction, and the actuation rod drives the first support and the second support to move close to each other in a second moving direction. Thereby, the jack is capable of expanding the commodity gradually and contains the descending device which is pressed to move the first support sheet and the second support sheet in the first moving direction or the second moving direction, thus retracting the jack gradually by pressing the adjustment grip repeatedly.