Hollow Tubular Decorating Roller Retention Assembly
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Solution Overview
Problem
Hollow tubular decorating rollers often detach during painting, and existing solutions do not facilitate easy replacement or maintenance.
Innovation Solution
A retention assembly with a fixed and separable mount member, featuring primary and secondary support formations with radially extending retention formations, allows secure attachment and easy removal of the roller, while enabling rotational movement and reducing material costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hollow tubular decorating roller is secured to a roller frame, then the roller can be used to apply paint, but the roller may detach during painting
Solution Approach 1:
The mount member is divided into a fixed portion and a separable portion that can be selectively coupled and decoupled. The fixed portion remains attached to the roller frame while the separable portion can be removed to facilitate roller replacement, yet together they provide secure retention during painting.
Solution Approach 2:
The mount member transitions from a static fixed structure to a dynamic system where the separable portion can be coupled and decoupled as needed. This allows the mounting mechanism to adapt between two states: secured during painting for reliability, and open for replacement for ease of maintenance.
2Reliability
If the mount member is made as a single fixed piece, then the roller is securely retained, but replacement and maintenance become difficult
Solution Approach 1:
The mount member is segmented into fixed and separable portions, allowing the separable portion to be removed for roller maintenance while the fixed portion remains on the roller frame. This provides both secure retention when coupled and easy access when separated.
3Reliability
If retention formations extend radially beyond support formations, then roller detachment is prevented, but material cost and weight increase
Solution Approach 1:
The retention formations are designed to extend radially beyond the primary support formations only at specific locations where retention is needed, rather than uniformly throughout. This provides effective roller retention while minimizing unnecessary material usage and weight.
4Reliability
If retention formations extend radially beyond support formations, then roller detachment is prevented, but manufacturing complexity increases
Solution Approach 1:
The retention formations extend radially beyond the primary support formations only at specific discrete locations, allowing for simplified manufacturing processes such as injection molding or stamping where material is added only where needed rather than requiring complex overall geometry.
Data Source
AI summary
A retention assembly (10) for a hollow tubular decorating roller (202) comprising a fixed mount member (12) that is securable in use to a roller frame (26). The fixed mount member (12) includes a first primary support formation (16) and a first retention formation (18) that extends radially beyond the first primary support formation (16). The retention assembly (10) also includes a separable mount member (14) that is selectively couplable with the fixed mount member (12). The separable mount member (14) includes a second primary support formation (20) and a second retention formation (22) that extends radially beyond the second primary support formation (20). The first and second primary support formations (16, 20) are received, in use, by a respective end (204a, 204b) of a hollow tubular decorating roller (202). The first and second retention formations (18, 22) cooperate with one another while the separable mount member (14) is coupled with the fixed mount member (12) to in use retain a hollow tubular decorating roller (202) therebetween.