Rope Adjuster with Lateral Loading Cam Mechanism
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Solution Overview
Problem
Conventional work positioning lanyards have a short useful life due to rope abrasion, and existing adjusters do not allow for easy replacement of the worn rope without disassembling the device, posing safety concerns.
Innovation Solution
A rope adjuster device with a rope bite and cam carrier that allows for adjustable positioning and easy rope replacement, featuring a movable bite cam and frame design that enables lateral loading and secure gripping or release of the rope, allowing for convenient rope replacement without removing the load connector.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional adjusters are assembled with permanent connections (rivets), then structural strength and reliability are improved, but rope replacement becomes difficult and requires workshop disassembly
Solution Approach 1:
The adjuster is divided into separable components: a body portion and a rope bite portion connected by a pivot connection. This segmentation allows the rope bite to be independently opened and closed, enabling easy rope replacement while maintaining structural integrity when closed, thus resolving the contradiction between permanent connection strength and ease of rope replacement.
2Reliability
If the rope bite is closed to prevent rope removal, then rope security is improved, but rope loading becomes difficult
Solution Approach 1:
The rope bite incorporates a movable cam mechanism that dynamically transitions between open and closed positions. The cam can be manually actuated to open the rope bite for easy rope loading, then automatically secures the rope when closed. This dynamic mechanism resolves the contradiction by providing both easy access during loading and secure retention during use.
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
Enables extended device life by allowing easy rope replacement without safety risks, maintaining secure load attachment and adjustable positioning.
Implementation Method 1
a bite cam that is movable relative to the rope guide surface between a gripping position wherein a rope is gripped between the bite cam and the rope guide surface
Implementation Method 2
The cam carrier includes a rigid lever member extending from the bite cam to the pivot location, the lever member operable by a user to place the rope bite in the second state by pivoting the cam carrier relative to the bite cam
Data Source
Figure 1~2
Figure 3
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AI summary
A rope adjuster device (14) is provided for allowing adjustable positioning of a load along a rope (12) extending through the device (14). The adjuster device (14) includes a rope bite (20), a cam carrier (22), and a frame (24). The bite (20) has a first state the device (14) is prevented from translating along the rope (12) and a second state wherein the device (14) can translate along the rope (12). The bite (20) is open on a lateral side (32) to allow loading of the rope 12) into the bite (20) by moving the rope (12) laterally with respect to the length (26) of the rope (12). The frame (24) defines a connector opening (60) to receive a load connector for attaching a load to the device (14). The frame (24) extends from the opening (60) to a pivot location (62) whereat the carrier (22) is connected to pivot relative to the frame (24) between an open position wherein a rope can be loaded from the lateral side (32) and a closed position wherein the lateral side (32) is closed by the frame (24) to prevent removal of the rope (12). The carrier (22) is spaced from the opening (60).