Telescopic Tool Holder for Ergonomic Mixing Machine Adjustment
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Solution Overview
Problem
Existing mixing machines are uncomfortable to use due to a fixed overall length that does not accommodate operators of varying heights, making handling inconvenient for both short and tall users.
Innovation Solution
A length-adjustable tool receiving device that allows the distance between the mixing machine's housing and the free end of the mixing rod to be adjusted, featuring a telescopic tool holder with a slide rod and locking mechanism for secure positioning, enabling comfortable handling regardless of operator height.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the overall length of the mixing machine is fixed, then the structure is simple and manufacturing is easy, but the machine is uncomfortable to use for operators of varying heights
Solution Approach 1:
The tool holder is made telescopic with a slide rod that can move longitudinally within the tool holder, allowing the overall length of the mixing machine to be dynamically adjusted. This enables operators of different heights to adjust the machine to a comfortable working position, resolving the contradiction between fixed structure simplicity and operational comfort.
Solution Approach 2:
The slide rod is received within the tool holder in a nested configuration, where one component (slide rod) is placed inside another (tool holder). This nesting arrangement allows for length adjustment while maintaining a compact overall structure when retracted, balancing structural simplicity with adjustability.
2Adaptability or versatility
If the tool holder is made telescopic to adjust length, then operator comfort is improved, but the device complexity increases
Solution Approach 1:
The telescopic tool holder with slide rod provides dynamic length adjustment capability, allowing the mixing machine to adapt to different operator heights and working conditions. This directly implements the adaptability improvement while the mechanical simplicity of the slide rod mechanism keeps the added complexity minimal.
Solution Approach 2:
The tool holder is segmented into movable parts (slide rod and tool holder body) that can adjust relative to each other. This segmentation enables length adjustment capability while keeping each segment relatively simple in design, thus improving adaptability without excessive complexity increase.
3Manufacturing precision
If a locking mechanism is added to fix the slide rod position, then positioning accuracy is improved, but the ease of operation is reduced
Solution Approach 1:
The spring-loaded locking element automatically engages with the locking recess when the slide rod reaches a desired position, providing self-locking functionality. This eliminates the need for manual locking operations, maintaining ease of operation while achieving secure positioning accuracy through the automatic engagement mechanism.
Solution Approach 2:
The locking element acts as an intermediary between the slide rod and tool holder, automatically engaging to secure the position. This intermediary mechanism provides positioning accuracy through automatic engagement while requiring minimal user intervention, thus maintaining operational convenience.
Data Source
Figure 1
Figure 2~3
AI summary
A work machine (11) has a working tool fastening device (14), especially for a stirring blade (17), driven by a drive motor (18) in a lengthwise direction (30) in front of a housing (12). The tool-fastening device (14) has a power output holder (35) rotationally joined to the drive motor (18) for retaining the tool holder (15) torsionally-tight in at least two lengthwise positions relative to the lengthwise direction (30) between the free end (32) of the tool (16) and the housing (12).