Knife Case With Slide Lock to Prevent Accidental Opening
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Solution Overview
Problem
Conventional knife cases are prone to accidental opening, knife exposure, rattling, and discomfort during carrying, and fail to provide safe and compact storage for knives.
Innovation Solution
A knife case design with a slide lock member that locks the blade and handle in a closed state, using a magnet for stability, heel support for prevention of accidental opening, and a compact configuration that exposes the handle while housing the blade, reducing rattling and enhancing safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional sheath-type cover is used to house a knife, then the knife can be stored, but the knife comes out of the cover easily and accidental opening occurs
Solution Approach 1:
The slide lock member is positioned in advance to engage with the locked parts on the first and second cases, creating a pre-established locking mechanism that prevents accidental opening before it can occur. The lock member is designed to be in a default locked position, requiring deliberate user action to open.
Solution Approach 2:
The slide lock member acts as an intermediary element between the first case and second case, providing a mechanical connection that secures the two cases together. This intermediate locking component prevents direct separation of the cases, thereby preventing accidental opening.
2Volume of moving object
If the knife case is designed to be compact for outdoor携带, then portability is improved, but external force from collision or pressing may unintentionally open the case
Solution Approach 1:
The slide lock member is positioned in advance to engage with the locked parts on the first and second cases, creating a pre-established locking mechanism that prevents accidental opening before it can occur. The lock member is designed to be in a default locked position, requiring deliberate user action to open.
Solution Approach 2:
The slide lock member features a curved guide part that provides smooth guidance and mechanical advantage, allowing the lock to engage securely with minimal force while maintaining compact dimensions. The curved geometry distributes external forces more effectively across the locking mechanism.
3Reliability
If the knife is housed in the case, then storage is achieved, but the knife rattles and generates sound during carrying
Solution Approach 1:
The magnet serves as an intermediary force between the knife and the first case, creating a magnetic attraction that holds the knife securely in place. This magnetic field acts as a non-contact holding mechanism that prevents the knife from moving or rattling during carrying.
Solution Approach 2:
The magnetic force provides a continuous holding parameter that maintains the knife's position without physical contact. By changing from mechanical friction-based retention to magnetic field-based retention, the system eliminates rattling while maintaining secure storage.
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 design ensures safe and compact storage, preventing accidental opening and rattling, and allows easy portability, making it suitable for outdoor use while maintaining safety and durability.
Implementation Method 1
a magnet provided at a first surface part to face the second case in the closed state
Data Source
AI summary
A knife case is configured to make a knife with a blade and a handle lockable in a closed state using a slide lock member while housing the blade in housing space formed in the closed state and exposing the handle from the housing space. The closed state is a state where a first case and a second case face each other that are coupled to each other via a hinge. The first case includes a first surface part, a first wall part, a magnet, a blade passage part, a heel support part, a guide part, and the slide lock member. The second case includes a second surface part, locked parts, and a ridge. The knife case is configured to be locked at a plurality of positions including both ends of the slide lock member in a longitudinal direction thereof simultaneously so as to prevent release of the second case from the first case by moving the slide lock member from an opening position to a closing position to cover the guide part and the locked parts with the slide lock member.