Cable Locking Device with Ratcheting Reel and Spring-Loaded Clamp
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Solution Overview
Problem
Conventional cable locking devices lack a secure and adjustable mechanism to prevent unauthorized loosening or withdrawal of cables from locking features, especially when subjected to tensile forces, and often require complex mechanisms for secure locking and unlocking.
Innovation Solution
A cable locking device with a rotatable reel, spring-biased clamp jaws, and a user-manipulable locking mechanism that secures the reel and clamp members in specific positions to prevent cable loosening, featuring a lockout member and padlock aperture for enhanced security, allowing for easy transition between locked and unlocked states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional cable locking device is used, then the cable can be secured around a lock feature, but the device lacks a secure mechanism to prevent unauthorized loosening or withdrawal of the cable when subjected to tensile forces
Solution Approach 1:
The locking device is divided into distinct functional segments: a reel for cable winding, clamp members for securing the cable, and a locking mechanism with lockout member. This segmentation allows each component to perform its specific function efficiently while maintaining overall system reliability without excessive complexity.
Solution Approach 2:
The locking mechanism incorporates a dynamic lockout member that can transition between locked and unlocked positions, and clamp members that can move between clamping and releasing positions. This dynamic design enables secure locking during normal operation while allowing easy unauthorized release when needed, resolving the contradiction between security and operational flexibility.
2Reliability
If a locking mechanism with reel securing portion and clamp member securing portion is implemented, then the cable is securely prevented from loosening, but the device requires complex mechanisms for secure locking and unlocking
Solution Approach 1:
The locking mechanism merges multiple functions into a single integrated system: the lockout member simultaneously controls both the reel securing portion and the clamp member securing portion. This consolidation achieves reliable dual-stage locking (preventing both reel rotation and cable movement) while simplifying the overall mechanism compared to having separate independent locking systems for each function.
Solution Approach 2:
The spring-biased clamp members provide automatic self-service by maintaining constant clamping pressure on the cable and automatically engaging with the locking mechanism. This self-servicing feature ensures reliable cable securing without requiring additional actuators or complex control systems, reducing overall mechanism complexity while maintaining high reliability.
3Reliability
If spring-biased clamp jaws are used to prevent cable movement, then reliable cable securing is achieved, but the device requires additional components increasing complexity
Solution Approach 1:
The spring-biased clamp members are designed as self-actuating components that automatically engage and disengage based on the position of the lockout member. The spring bias provides continuous clamping force without requiring additional actuators, sensors, or control systems. This self-service mechanism achieves reliable cable securing while minimizing the number of components compared to externally actuated clamping systems.
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 device effectively secures cables against unauthorized loosening or withdrawal by using a ratcheting mechanism and spring-loaded clamp jaws, ensuring reliable locking and easy unlocking, enhancing security and usability.
Implementation Method 1
spring-biased clamp jaws
Implementation Method 2
ratcheting mechanism
Data Source
Figure 1
Figure 1A
Figure 2
AI summary
A cable locking device includes a housing, a cable extending outward through a cable passage in the housing and terminating at a cable end connector receivable in a cable connection port in the housing, and a locking mechanism assembled with the housing and movable between a locked position and an unlocked position. When the locking mechanism is in the locked position, a first cable securing portion secures the cable against movement within the cable passage in at least an outward direction, and a second cable securing portion secures the cable end connector within the cable connection port. When the locking mechanism is in the unlocked position, the first cable securing portion permits movement of the cable within the cable passage in the outward direction, and the second cable securing portion permits removal of the cable end connector from the cable connection port.