Hinged Packaging Case with Variable Clamping Force
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Solution Overview
Problem
Existing packaging cases with clamp-type holders for oblong objects, such as precision tools, often require either high or low manual force for clamping, leading to potential damage to the object, the case, or injury, due to relatively constant clamping force, and lack adequate protection for sensitive tools during removal.
Innovation Solution
A packaging case design with a base divided into upper and lower parts connected by a hinge, allowing controlled access to the tool shank and featuring adjustable clamping jaws with friction-increasing inserts and a protective shell for variable clamping force, ensuring secure holding with minimal manual effort and protecting the tool during insertion and removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a clamp-type holder with constant clamping force is used, then the object is securely held, but high manual force is required for insertion and removal which can cause damage or injury
Solution Approach 1:
The clamping force is made variable rather than constant. The holder provides strong clamping force during storage to securely hold the object, but allows reduced clamping force during insertion and removal operations, enabling easy operation without damage or injury risk
Solution Approach 2:
The holder alternates between different clamping force states: high clamping force during storage periods to secure the object, and low clamping force during insertion/removal periods to enable easy operation. This periodic variation in clamping force resolves the contradiction between secure holding and ease of operation
2Reliability
If high clamping force is applied to securely hold the object, then the object is firmly fixed, but the object may be damaged during insertion or removal
Solution Approach 1:
The clamping force dynamically adjusts between high and low states. High clamping force is applied only when needed for secure storage, while low clamping force is provided during insertion and removal to prevent damage to the object
Solution Approach 2:
The holder is designed to provide low clamping force as a baseline state before insertion/removal operations, and only increases to high clamping force when the object is properly positioned and storage is required, preventing beforehand damage to the object
3Ease of operation
If low clamping force is used to enable easy insertion and removal, then manual force is reduced, but the object may be damaged during storage or transport
Solution Approach 1:
The clamping force transitions from low during insertion/removal operations to high during storage. This dynamic adjustment ensures the object is easily inserted and removed when needed, while being securely protected during storage and transport periods
4Ease of operation
If the base is divided into upper and lower parts with hinge connection, then controlled access to tool shank is enabled, but the device complexity increases
Solution Approach 1:
The base is segmented into upper and lower parts that can move relative to each other via a hinge connection. This segmentation enables controlled access to the tool shank by allowing the upper part to be positioned away from the lower part during insertion/removal, while maintaining a relatively simple overall structure
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 allows for secure and safe insertion and removal of tools with reduced manual force, preventing unintentional release and damage, while providing enhanced protection for sensitive tools by varying the clamping force and ensuring deliberate handling.
Implementation Method 1
zwei federelastisch in radialer Richtung gelagerte, voneinander beabstandete, U-förmige Klemmschenkel, zwischen denen ein radial innerer Aufnahmebereich für die Aufnahme eines Werkzeugs definiert ist
Implementation Method 2
Reibungsvorrichtungen zur Erhöhung der Reibungswirkung zwischen den Klemmschenkeln und dem Werkzeug
Data Source
AI summary
A packaging case (1) for oblong objects such as high-quality precision tools (5), having a body (4) with a longitudinal receiving and removal opening (34), that can be closed by a protective element 2). The body (4) has a base (6) to which a clamping part (8) with at least one flexibly deformable U-shaped clamping jaw (9) is attached. The base part (6) is divided into a lower part (12) that is securely connected to the clamping part (8) and an upper part (11) that is attached to the lower part (12) such that when the upper part (11) is in an open position, the space (23) around the free end of the tool 5) is accessible, but when the upper part 11) is in the closed position the space around the free end of the tool is blocked.