Refill for a dispenser, bearing unit and dispenser
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Solution Overview
Problem
Existing dispensers for material webs, such as toilet paper or paper towels, face issues with incorrect refill insertion, leading to jamming and inefficient dispensing due to the lack of effective coding mechanisms that ensure only compatible refills can be used.
Innovation Solution
The introduction of an axial coding system where the bearing journal of the refill is axially displaceable, allowing only compatible refills to function properly in the dispenser, combined with existing rotary coding, ensuring correct alignment and preventing incorrect refills from being dispensed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional dispenser with fixed guide tracks is used, then the dispenser structure is simple, but incorrect refills can be inserted leading to jamming and inefficient dispensing
Solution Approach 1:
The bearing journal is designed to be axially displaceable relative to the support bar, allowing dynamic adjustment of its axial position. This dynamic feature enables the coding mechanism to function: when an incorrect refill is inserted, the bearing journal cannot achieve proper axial alignment with the guide track, preventing insertion and avoiding jamming.
Solution Approach 2:
The axial displaceability of the bearing journal provides preliminary coding verification before the refill is fully inserted into the dispenser. The guide track's axially offset portion acts as a preliminary check point that prevents incorrect refills from being inserted, avoiding subsequent jamming and dispensing failures.
2Reliability
If the bearing journal is fixed on the support bar, then the refill structure is simple, but the refill cannot be correctly coded to prevent incorrect insertion
Solution Approach 1:
The bearing journal is designed to be axially displaceable relative to the support bar, allowing dynamic adjustment of its axial position. This dynamic feature enables the coding mechanism to function: when an incorrect refill is inserted, the bearing journal cannot achieve proper axial alignment with the guide track, preventing insertion and avoiding jamming.
Solution Approach 2:
The refill is segmented into functionally distinct components: the support bar (axial support) and the bearing journal. This segmentation allows the bearing journal to have independent axial movement capability while remaining connected to the support bar, enabling the coding function without compromising the structural integrity of the refill.
3Reliability
If axial coding is implemented with displaceable bearing journals, then incorrect refills are prevented from dispensing, but the dispenser and refill structures become more complex
Solution Approach 1:
The bearing journal is designed to be axially displaceable relative to the support bar, allowing dynamic adjustment of its axial position. This dynamic feature enables the coding mechanism to function: when an incorrect refill is inserted, the bearing journal cannot achieve proper axial alignment with the guide track, preventing insertion and avoiding jamming.
Solution Approach 2:
The axial displaceability of the bearing journal provides preliminary coding verification before the refill is fully inserted into the dispenser. The guide track's axially offset portion acts as a preliminary check point that prevents incorrect refills from being inserted, avoiding subsequent jamming and dispensing failures.
Data Source
AI summary
Refill for a dispenser, with a material web wound to form a roll and at least one substantially axially adjustable bearing journal. The at least one substantially axially adjustable bearing journal is adjustable substantially axially outwards away from the roll starting from a defined inner end position in which it protrudes axially beyond the roll. A bearing unit for such a refill, and a dispenser for housing the refill and dispensing the material web are also provided.