L-Shaped Tape Dispenser Spindle Biasing Mechanism
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Solution Overview
Problem
Existing rolled tape dispensers fail to maintain thick, slick surfaced, woven fabric tape in an orderly rolled form, leading to tape unrolling, tangling, and wastage, and lack ease in recoiling excess tape, especially when belt or strap supported for one-handed use.
Innovation Solution
A rolled tape dispenser with an L-shaped body featuring a cutter blade, a cylindrical spindle, and a resilient member that biases the spindle toward the cutter blade or a thin portion of the dispenser's leg, maintaining the tape's coiled integrity by clamping it between the spindle and the blade, allowing for easy dispensing and recoiling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If previously proposed dispensers were designed to be belt or strap supported for one-handed use, then ease of operation is improved, but device complexity and component cost increase
Solution Approach 1:
The dispenser is divided into distinct functional segments: a body portion, a spindle portion, and a cutter blade portion. This segmentation allows each component to perform its specific function independently while simplifying the overall design and reducing component complexity.
Solution Approach 2:
The dispenser body serves multiple functions: it houses the spindle, provides structural support, and includes the cutter blade. This multi-functionality reduces the need for separate components, thereby simplifying the overall device design while maintaining ease of one-handed operation.
2Stability of the object's composition
If previously proposed dispensers were designed with complex mechanisms to maintain tape order, then tape retention is improved, but device complexity and cost increase
Solution Approach 1:
The complex retention mechanisms are extracted and replaced with a simple resilient biasing mechanism that naturally maintains tape orderliness through elastic force, eliminating the need for complicated mechanical structures.
Solution Approach 2:
The resilient member automatically biases the spindle toward the cutter blade to maintain tape orderliness without requiring external control mechanisms. The system self-regulates through the elastic properties of the resilient member, simplifying the overall design.
3Manufacturing precision
If the cutter blade is positioned to engage the tape roll surface, then tape cutting precision is improved, but tape damage during dispensing increases
Solution Approach 1:
The cutter blade is positioned to slightly exceed the tape roll surface, engaging only the outer layer for cutting while the resilient member provides partial biasing force to prevent excessive contact and damage during normal dispensing operations.
Solution Approach 2:
The resilient member acts as an intermediary between the spindle and the cutter blade, mediating the contact force to ensure precise cutting while preventing damage to the tape during dispensing operations.
4Stability of the object's composition
If the resilient member strongly biases the spindle toward the cutter blade, then tape roll stability is improved, but tape friction and difficulty in recoiling increase
Solution Approach 1:
The resilient member provides a controlled, moderate biasing force that maintains tape roll stability without creating excessive friction. The elastic properties of the resilient member allow for dynamic adjustment of the biasing force, facilitating smooth tape recoiling while maintaining stability.
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 dispenser effectively retains the tape in an orderly form, prevents tangling, and facilitates one-handed use by ensuring smooth dispensing and recoiling of tape, regardless of the tape roll's diameter, reducing waste and operational complexity.
Implementation Method 1
a resilient member that biases the spindle toward the cutter blade so as to press the cylindrical outer surface of the tape roll either into engagement with the cutter blade
Data Source
AI summary
A rolled tape dispenser that has a generally L-shaped body with a relatively short leg that supports a cutter blade and cover to extend transversely across the width of the cylindrical outer surface of a roll of tape, and a longer leg configured to extend along one of two opposite sides of the roll of tape. A spindle is configured to be inserted into a hollow central core of the roll of tape has an end region slidably connected to the longer leg for movement along the length of the longer leg. A resilient member connected to the body biases the spindle toward the cutter blade so that a roll of tape carried on the spindle has its generally cylindrical outer surface biased into engagement with the cutter blade, or, more preferably, into engagement with a thin portion of the shorter leg that underlies the cutter blade.