Telescopic Handle Pruning Tool Pivot Assembly
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Solution Overview
Problem
Conventional pruning tools with adjustable lengths often suffer from assembly errors and damage during the stamping process, leading to low yield and high costs, as components are easily affected by pressure and temperature settings, and cannot be reused.
Innovation Solution
A telescopic handle pruning tool design featuring pivotably connected handles with a control assembly that includes an actuating piece, positioning member, and resilient member, allowing for adjustable length without the risks of assembly errors, using a sleeve and restriction member for safety and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the stamping process is used to integrate components, then assembly speed and mass production capability are improved, but assembly precision and component reliability deteriorate due to pressure and temperature settings causing damage
Solution Approach 1:
The handle assembly is divided into separate components (first tube, second tube, control assembly, positioning member) that are individually manufactured and then assembled together through pivot connections, avoiding the damage-causing stamping process while maintaining assembly efficiency
Solution Approach 2:
A pivot connection mechanism serves as an intermediary between the first tube and second tube, allowing reliable assembly without direct stamping integration. The pivot seat and positioning member act as intermediaries that ensure precise alignment and reliable connection
2Productivity
If the stamping process is used to integrate components, then production efficiency is improved, but manufacturing precision deteriorates leading to assembly errors
Solution Approach 1:
Components are segmented into separate parts with dedicated manufacturing processes, allowing each component to be precisely manufactured independently before final assembly, thereby maintaining high manufacturing precision without sacrificing production efficiency
Solution Approach 2:
The pivot seat is pre-positioned in the first tube and the positioning member is pre-formed with specific geometry, allowing precise alignment to be established before final assembly operations, ensuring high assembly precision
3Productivity
If components are damaged during assembly, then production yield decreases and costs increase, but using traditional assembly methods prevents component reuse
Solution Approach 1:
The pivot connection provides a dynamic, reversible assembly method where components can be easily disassembled and reused, unlike fixed stamping integrations. This dynamic connection maintains high production yield while enabling component reuse and reducing waste
Solution Approach 2:
The modular pivot-based assembly allows damaged components to be easily identified and replaced while preserving intact components for reuse, thereby reducing overall material waste and improving production yield efficiency
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 telescopic handle design enhances the durability and yield of pruning tools by allowing for precise adjustment and preventing accidental disengagement, reducing the risk of damage and improving usability and safety.
Implementation Method 1
A resilient member is located at the pressing end of the actuating piece
Data Source
AI summary
A telescopic handle pruning tool includes two handles and each handle includes a first tube and a second tube pivotally interconnected to each other. The first tube has a storage portion which has a first hole and a second hole. The second tube includes multiple adjustment holes. A control assembly is located in the storage portion and includes an actuating piece which is pivotably connected to the storage portion. A positioning member and a resilient member are respectively connected to two ends of the actuating piece. The positioning member extends through the second hole of the storage portion. When the actuating piece is pivoted, the positioning member is engaged with or disengaged from one of the adjustment holes of the second tube when pivoting the actuating piece. The first tube is movable relative to the second tube to adjust the length of the handles.