Paint Roller Push-Push Mechanism for Clean Disassembly
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Solution Overview
Problem
Conventional paint rollers are inconvenient to disassemble, leading to hands being polluted with paint and uneven paint distribution due to spontaneous rotation of the paint roll when partially dipped.
Innovation Solution
A push-push mechanism is introduced to easily connect and disconnect the paint roll from the bracket, allowing for hands-free disassembly and improved paint distribution by preventing rotation during painting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the paint roll is disconnected by holding it with one hand and pulling the bracket with the other hand, then the paint roll can be disconnected from the bracket, but the hands are polluted with paint
Solution Approach 1:
The paint roll is designed to lean on its own free end (which rests on the support surface) to provide the necessary disassembly force. The bracket is pushed along the extension direction of its end portion, and the paint roll's own weight and position provide the counterforce needed to unlock the snap element, eliminating the need for manual handling of the paint roll during disassembly.
2Ease of operation
If the paint roll is pushed into the ground to disconnect, then hands-free disassembly is achieved, but the mechanism complexity increases
Solution Approach 1:
The disassembly function is extracted as a separate, dedicated mechanism (the push-push mechanism with snap element and counter-snap element) rather than relying on friction or simple interference fits. This specialized mechanism, while adding some complexity, provides reliable one-handed operation and prevents accidental disconnection during use.
3Productivity
If the paint roll is partially dipped in paint, then paint can be applied to the surface, but the paint roll spontaneously rotates causing uneven paint distribution
Solution Approach 1:
The snap element and counter-snap element create a rigid locked connection between the bracket and paint roll before painting begins. This preliminary securing action prevents the paint roll from rotating during the painting process, ensuring that the paint is distributed evenly across the roll surface as it is dipped and applied.
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 push-push mechanism facilitates easy and clean disassembly of the paint roll and ensures even paint coverage by preventing spontaneous rotation, enhancing user convenience and painting efficiency.
Implementation Method 1
spring means for producing an elastic force urging the snap element and the counter-snap element apart when moving the snap element in direction of the counter-snap element
Implementation Method 2
The other end of the bracket is inserted in the sleeve and held by frictional forces
Data Source
Figure 1~3
Figure 4~7
Figure 8~10
AI summary
The invention concerns a paint roller comprising a paint roll and bracket (1) having at its one end (E1) a handle and on its other end (E2) an end portion (2) where the paint roll can be connected rotatably, wherein at the end portion (2) there is provided a snap element (7), wherein a counter-snap element (17), which corresponds tothe snap element (7), is provided at a first end (E3) of a paint roll tube (3) of the paint roll, wherein spring means for producing an elastic force urging the snap element (7) and the counter-snap element (17) apart when moving the snap element (7) in direction of the counter-snap element (17) are provided, and wherein the spring means, the snap element (7) and the counter-snap element (17) act together such that the snap element (7) engages with the counter-snap element (17) when pushing the snap element (7) against the elastic force in direction of the counter-snap element (17), and the snap element (7) disengages from the counter-snap element (17) when subsequently pushing the snap element (7) against the elastic force in direction of the counter-snap element (17) so that the paint roll can be disconnected from the bracket (1).