Comber Top Roller Holder with Metal Spring for Bearing Retention
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Solution Overview
Problem
Existing detaching top roller supporting portions for combers face issues with maintaining holding force over time, leading to potential top roller detachment during maintenance, and difficulty in attaching or detaching rollers without tools due to decreased elasticity in plastic components.
Innovation Solution
Incorporation of a metal spring to assist the holding force of plastic-made holding portions, ensuring stable retention of bearings even as plastic elasticity decreases, allowing for tool-free detachment and prevention of top roller fall-off during maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the roller holder is made of plastic to avoid abrasion of metal parts, then abrasion resistance is improved, but holding force decreases over time due to elasticity loss
Solution Approach 1:
The roller holder combines plastic material with metal springs to create a composite structure. The plastic provides abrasion resistance while the metal springs compensate for elasticity loss over time, maintaining holding force stability throughout the component's service life.
2Reliability
If the claw portions are thickened to maintain holding force when elasticity decreases, then holding force is improved, but ease of operation deteriorates as tool-free attachment becomes difficult
Solution Approach 1:
Metal springs are introduced as an intermediary element between the plastic roller holder and the bearings. The springs provide the necessary holding force without requiring the plastic claw portions to be thickened, thus maintaining ease of operation for tool-free attachment and detachment.
3Ease of repair
If the roller holder is designed to move between pressing and releasing positions for maintenance, then ease of repair is improved, but top roller detachment risk increases when elasticity decreases
Solution Approach 1:
Metal springs are installed in advance within the roller holder to cushion and prevent top roller detachment. When the roller holder moves to the releasing position during maintenance, the springs ensure that top rollers cannot fall off even if the plastic elasticity has degraded, thus maintaining both ease of repair and top roller retention.
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 metal spring enhances the holding force, enabling stable attachment and detachment of top rollers without tools, even after prolonged use, and prevents top roller fall-off during maintenance operations.
Implementation Method 1
the elasticity decreases due to temporal change. Along with that, the holding force with which the claw portions 45a hold the bearings 44 decreases.
Implementation Method 2
a metal spring, which assists holding force with which the holding portion holds the bearing
Data Source
Figure 1
Figure 2A
Figure 2B~2C
AI summary
A detaching top roller supporting portion for a comber supports a detaching top roller via a bearing. The detaching top roller supporting portion includes a holding portion, which detachably holds the bearing. At least a part of the holding portion that is in contact with the bearing is made of synthetic polymer. The detaching top roller supporting portion is characterized by a metal spring, which assists holding force with which the holding portion holds the bearing.