Length-adjustable support device
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Solution Overview
Problem
Existing length-adjustable support devices for tables lack a simple and efficient mechanism to temporarily interlockingly fix the length, making it difficult to adjust the support device's length without complex actuation of locking means.
Innovation Solution
A length-adjustable support device comprising a first rod and a second rod with a mechanism that allows axial translation of the second rod to cause rotational motion, enabling interlocking and unlocking of the second rod's position relative to the first rod, allowing for adjustable length without requiring complex locking mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional locking mechanism is used to fix the length of the support device, then the length can be adjusted and fixed, but the actuation becomes complex and difficult to operate
Solution Approach 1:
The patent converts the linear axial motion of the second rod into rotational motion through a mechanism (such as a cam or eccentric arrangement). This dimensional transformation allows a simple push or pull action to trigger the locking or unlocking of the length adjustment, eliminating complex manual locking operations while maintaining secure length fixation.
Solution Approach 2:
The support device incorporates a self-locking mechanism where the axial translation of the second rod automatically engages or disengages the locking function through the converted rotational motion. The system serves itself by using the adjustment motion to trigger the locking action, without requiring separate complex locking actuators or multiple操作步骤.
2Device complexity
If a simple axial translation mechanism is used, then the structure is simple, but the length cannot be securely fixed at adjusted positions
Solution Approach 1:
By transforming axial translation into rotational motion through a mechanism, the patent enables a simple linear structure to achieve reliable length fixation. The rotational component created by the mechanism can engage with locking features (such as teeth, cams, or lugs) to securely hold the adjusted length position, maintaining structural simplicity while ensuring reliable fixation.
Solution Approach 2:
The mechanism changes the motion parameter from pure axial translation to a combination of axial and rotational motion. This parameter transformation allows the simple axial movement to trigger a locking engagement through the rotational component, achieving secure length fixation without complicating the overall structure.
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 mechanism allows for easy adjustment of the support device's length by controlling the axial motion of the second rod, improving operational comfort and versatility in various applications, such as tables, ladders, and bicycle stands, without the need for complex locking actuation.
Implementation Method 1
the axial translation motion of the second rod causes an additional rotational motion of the second rod, the second rod thus being movable between a first rotational position and a second rotational position relative to the first rod by means of the axial translation motion of the second rod
Implementation Method 2
the fastening element and the mating interlocking-connection element being in mechanical contact with each other in the first rotational position, so that an interlocking connection between the mating interlocking-connection element and the fastening element is only possible in the first rotary position
Data Source
AI summary
A length-adjustable support device, comprising a first rod, a second rod, a bearing formed on the first rod for axially movably mounting the second rod on the first rod such that the second rod is movable in a translation motion relative to the first rod, and a movable fastening element for interlockingly axially fastening the movable second rod to the first rod by interlockingly fastening the fastening element to a mating interlocking-connection element, the mating interlocking-connection element for the interlocking connection to the fastening element. The aim of the invention is that the interlockingly locked length of the support device can be temporarily adjusted by changing the length of the support device.