Height-Adjustable Toy Crane Support Foot With Segmented Thread
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Solution Overview
Problem
Existing height-adjustable support devices for toy cranes require complex and time-consuming screwing mechanisms, which lack precision and patience from children, making quick and easy height adjustments difficult.
Innovation Solution
A support device with a spindle insert featuring a first and second threaded section and a thread-free displacement section allows for three-stage height adjustment, enabling precise and quick movement between retracted and extended positions without continuous threading, ensuring secure holding in the retracted position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a continuous spindle insert thread is used for height adjustment, then the support foot can be adjusted in height, but the screwing in and out process becomes long and complex
Solution Approach 1:
The continuous thread is divided into discrete first and second threaded sections separated by a thread-free displacement section. This segmentation allows the support foot to be quickly displaced along the thread-free section without continuous screwing, while still providing threaded engagement points for secure positioning at retracted and extended positions.
2Measurement precision
If a continuous spindle insert thread is used, then height adjustment is possible, but the process lacks precision and requires patience
Solution Approach 1:
By segmenting the thread into distinct first and second threaded sections with a thread-free displacement section in between, the design provides precise threaded engagement for positioning while allowing quick displacement along the thread-free section, combining precision with operational simplicity.
Solution Approach 2:
The thread-free displacement section acts as an intermediary element that allows quick movement between threaded sections without requiring continuous screwing. This intermediary section enables the support foot to be rapidly positioned between retracted and extended positions while maintaining precise threaded engagement at the endpoints.
3Device complexity
If a single continuous thread is used, then the structure is simple, but the number of parts increases and production becomes complex
Solution Approach 1:
The spindle insert is segmented into distinct functional zones: a first threaded section for retracted position engagement, a thread-free displacement section for quick movement, and a second threaded section for extended position engagement. This segmentation simplifies manufacturing by allowing each section to be optimized independently while reducing the overall number of separate parts needed.
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
Facilitates simple, quick, and precise height adjustments, reducing the need for complex screwing, enhancing user experience by allowing easy and secure positioning of the support foot, while reducing the number of parts and production complexity.
Implementation Method 1
The spindle insert thread according to the invention comprises a first threaded section for arranging the support foot on the spindle insert in a retracted position and a second threaded section arranged at a distance from the first threaded section for arranging the support foot on the spindle insert in an extended position
Implementation Method 2
To move the support foot from the extended position to the retracted position or vice versa, the support foot must be moved quickly and easily along the thread-free displacement section
Data Source
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AI summary
The device (7) has a stand base (11) with a stand base thread for supporting at a base. A spindle insert (12) is provided for adjusting height of the stand base. The spindle insert has a spindle insert thread that corresponds to the stand base thread. Thread sections arrange the stand base at the spindle insert in a retracted position and an extended position, respectively. The spindle insert has a thread free moving section arranged between the threaded sections for moving the stand base between the retracted position and the extended position.