Cutting Tool Control Device Nested Assembly Anti-Loosening
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Solution Overview
Problem
Existing control devices for cutting tools require tools for assembly and can loosen over time, leading to inefficiencies and increased production costs.
Innovation Solution
A control device comprising a first component with a head part and rod part, and a second component with a hollow tube and window, allowing for multi-stage adjustment of handle distance without tools, ensuring secure assembly and reduced loosening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional control devices are assembled using screws and stoppers, then the assembly provides initial stability, but the components become loose and fall off after long term use
Solution Approach 1:
The control device comprises a nested structure where the second component is inserted into the first component, forming a telescopic assembly. The hollow tube of the second component receives the rod part of the first component, creating a compact nested configuration that reduces the risk of loosening while maintaining adjustment functionality.
Solution Approach 2:
A fastening part acts as an intermediary element between the first and second components. This fastening part includes a fastening body with a fastening end that engages with the rod part and a locking end that secures to the hollow tube, providing a reliable connection mechanism that prevents loosening over time.
2Reliability
If traditional control devices use screws for assembly, then secure connection is achieved, but tools are required for assembly increasing production costs
Solution Approach 1:
The fastening part is designed to be self-assembling without requiring external tools. The elastic element automatically engages the fastening body with the rod part and secures it to the hollow tube through elastic deformation and recovery, enabling tool-free assembly while maintaining secure connection.
Solution Approach 2:
The traditional mechanical screw connection is replaced with an elastic locking mechanism. The elastic element provides the necessary mechanical force and locking action through its elastic properties, substituting the need for threaded fasteners and eliminating the requirement for assembly tools.
3Adaptability or versatility
If the control device allows multi-stage adjustment of handle distance, then operational adaptability is improved, but device complexity increases
Solution Approach 1:
The control device incorporates a dynamic adjustment mechanism where the first and second components can move relative to each other along the rod part. This dynamic structure allows multi-stage adjustment of the distance between handles while maintaining a relatively simple overall structure through the use of guide grooves and elastic locking.
Solution Approach 2:
The adjustment range is divided into multiple discrete stages through the segmented design of the fastening part and guide grooves. Each stage corresponds to a specific position where the elastic element can lock, providing adaptable handle distances without requiring a complex continuous adjustment mechanism.
Data Source
AI summary
A control device of a cutting tool is revealed. For performing cutting, opening and closing, the cutting tool includes a pair of handles pivotally connected to each other and each handle having a blade. The control device is set on the handle and involved in opening or closing of the blades of the cutting tool. The control device includes a first component and a second component. The first and the second components are connected to and locked with each other tightly by a fastening structure. The control device is disposed on the handle closely, without loosening from the handle.