Wire Stripper Protective Device Coupling Mechanism
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Solution Overview
Problem
Existing wire strippers lack reliable mechanisms for preventing user injuries and accidental damage to cables during the stripping process, particularly when multiple cables are being handled or when the stripper is stored or transported.
Innovation Solution
The integration of a protective device that automatically closes during the stripping process, coupled with a safety device that secures the stripping blade in a partially closed position to prevent accidental access and damage, along with an adjustable transition from the pull-off to the empty part stroke to manage the sleeve-like sheathing removal effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective device is added to cover the separating device, then user safety and prevention of accidental cable damage are improved, but device complexity increases
Solution Approach 1:
The protective device is integrated with the hand lever mechanism through a coupling device. When the hand lever is actuated to close the jaws, the coupling device automatically transfers the protective device into the closed position, covering the separating device. This merging of functions ensures user safety without requiring separate manual operation of the protective device, thus limiting the increase in device complexity.
Solution Approach 2:
The protective device is designed to automatically close and remain closed through the coupling mechanism with the hand lever. The system serves itself by using the existing hand lever actuation to control the protective device, eliminating the need for additional controls or manual intervention, thereby minimizing the increase in device complexity while improving safety.
2Reliability
If the protective device remains closed after hand lever actuation, then continuous protection against injuries and cable damage is improved, but ease of operation deteriorates
Solution Approach 1:
The coupling device between the hand lever and protective device is designed to allow movement in one direction (closing) but not the reverse. When the hand lever is actuated in the closing direction, it automatically transfers the protective device into the closed position. However, when the hand lever is moved in the opening direction, the protective device remains locked in the closed position through the asymmetric design of the coupling mechanism, providing continuous protection while requiring deliberate action to open.
Solution Approach 2:
The coupling device is designed to prevent the protective device from opening when the hand lever is released or moved in the opening direction. This preliminary anti-action mechanism ensures that the protective device remains closed after the stripping operation, preventing accidental injuries or cable damage during storage or transport, while the asymmetric coupling requires sufficient closing force to activate and release the locking mechanism.
Data Source
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AI summary
The invention relates to wire strippers (2) with two hand levers. A closing stroke of the hand levers includes a cutting stroke, during which at least one stripping blade moves into a closed position transversely to a longitudinal axis of a receptacle for the cable to be stripped. Furthermore, the closing stroke includes a pulling stroke, during which the at least one stripping blade moves in the closed position parallel to the longitudinal axis of the receptacle for the cable to be stripped. According to the invention, a cutting device (13) for cutting a cable is provided, which has at least one cutting blade (80, 81). The cutting device (13) can be closed externally by means of a protective device (82). Preferably, the protective device (82) is coupled to a hand lever via a coupling device.Actuation of the hand levers in the closing direction can then automatically move the protective device (82) into the closed position via the coupling device.