Blade Scabbard Sharpening and Honing Mechanism
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Solution Overview
Problem
Existing blade sharpening mechanisms in scabbards and knife blocks typically provide only abrasive sharpening, failing to deliver a fine finish to the cutting edge of blades.
Innovation Solution
A blade sharpening and storing device with a hollow housing, a pivotally mounted blade sharpener, and a spring-biased honing device that engages the cutting edge upon insertion or withdrawal, featuring overlapping honing surfaces for precise sharpening and honing, along with a restraining mechanism to prevent inadvertent withdrawal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If an abrasive sharpening mechanism is used in a scabbard, then the blade can be sharpened during storage, but the cutting edge does not receive a fine finish
Solution Approach 1:
The sharpening system is divided into two distinct segments: a pivotally mounted sharpener for initial edge formation and a spring-biased honing device for fine finishing. Each component performs a specific function in sequence, allowing the blade to receive both coarse sharpening and fine honing during insertion or withdrawal, thereby resolving the contradiction between sharpening capability and finish quality.
Solution Approach 2:
The honing device incorporates a spring bias that causes the honing surface to dynamically engage with the cutting edge during blade movement. This dynamic engagement ensures consistent contact and fine finishing without requiring complex mechanical adjustments, maintaining simplicity while achieving high precision.
2Manufacturing precision
If a spring-biased honing device is added to provide fine finish, then the cutting edge quality improves, but the device complexity increases
Solution Approach 1:
The honing device is integrated within the same housing as the sharpener, and both components are activated during the same blade insertion/withdrawal motion. This merging of functions into a single operational sequence adds honing capability without proportionally increasing operational complexity, as both sharpening and honing occur during the same blade movement.
Solution Approach 2:
The spring bias automatically engages the honing surface with the cutting edge during blade movement, eliminating the need for additional actuators or complex control mechanisms. The blade's own motion triggers the honing action, allowing the system to self-regulate the honing process without external intervention, thereby minimizing added complexity.
3Ease of operation
If the blade is freely removable from the housing, then access is easy, but inadvertent withdrawal may occur reducing safety
Solution Approach 1:
A restraining mechanism is pre-positioned within the housing to automatically engage with the blade during insertion. This preliminary positioning ensures that the blade is secured upon insertion without requiring additional user actions, maintaining ease of operation while providing safety against inadvertent withdrawal.
Solution Approach 2:
The restraining mechanism applies a preliminary counter-force to prevent blade withdrawal before any inadvertent action can occur. By positioning the restraint to engage automatically during insertion, the system preemptively counteracts any potential unintended removal, balancing safety with ease of deliberate access.
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 solution effectively sharpens and hones the blade cutting edge, providing a fine finish and ensuring the blade is securely stored until deliberate removal, enhancing both functionality and safety.
Implementation Method 1
the honing device is mounted within the housing and is biased by a spring to cause engagement between the cutting edge of the blade and the honing surface
Implementation Method 2
a blade sharpener pivotally mounted within the housing and positioned to be engaged by a cutting edge of the blade... to sharpen the cutting edge; and a blade honing device including at least one honing surface... to hone the cutting edge
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
The invention relates to a blade sharpening and storing device. The device includes a hollow housing for receiving and storing a blade and an access opening at an end of the housing through which the blade can be moved longitudinally to be inserted into or withdrawn from the housing. A blade sharpener is positioned to be engaged by a cutting edge of the blade when the blade is inserted into or withdrawn from the housing and which is responsive to movement of the blade relative to the housing to sharpen the cutting edge. A blade honing device positioned to be engaged by the cutting edge of the blade when the blade is inserted into or withdrawn from the housing and which is responsive to movement of the blade relative to the housing to hone the cutting edge. In another aspect, the invention relates to a blade storing device and blade combination. The blade includes opposite substantially parallel sides which meet at a cutting edge. The blade storing device includes a housing having an access opening at an end of the housing through which the blade can be moved longitudinally to be inserted into or withdrawn from the housing. The blade storing device and blade combination includes a blade restraining mechanism that includes a restraining member coupled to the housing and an opening within the blade, the restraining member having active and inactive positions in that when the blade is inserted within the housing such that substantially an entire cutting edge of the blade is within the housing, in the active position the restraining member is positioned inside the opening within the blade for preventing withdrawal of the blade from the housing and in the inactive position the restraining member is positioned outside the opening within the blade for allowing withdrawal of the blade from the housing.