Cable Tie Tightening Tool With Direct Force-Limit Retention
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Solution Overview
Problem
Conventional cable tie tools lack efficiency, ergonomics, and versatility in tightening and cutting operations, necessitating an improved design for enhanced user experience and precision.
Innovation Solution
A cable tie tightening device with a gripping unit, cutting unit, and actuator unit that utilizes a leverless mechanism for force adjustment, featuring a direct engagement between the retaining element and cylinder element, reducing parts and improving force alignment, and allowing for a slimmer design with improved ergonomics and precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional cable tie tools are used, then basic tightening and cutting functions are provided, but efficiency, ergonomics, and precision are insufficient
Solution Approach 1:
The patent combines the gripping unit, cutting unit, actuator unit, and force adjusting unit into a single integrated cable tie tool. This merging of multiple functions into one device improves productivity by eliminating the need for separate tools while maintaining ergonomic handling through unified design.
Solution Approach 2:
The actuator unit enables automatic actuation of the gripping and cutting units, transforming manual operation into an automated process. This dynamic element improves efficiency by reducing manual intervention while the force adjusting unit maintains ergonomic control through manual force limit adjustment.
2Device complexity
If a leverless mechanism with direct engagement is used, then device complexity and number of parts are reduced, but manufacturing precision requirements increase
Solution Approach 1:
The patent removes intermediate levers and transmission elements from the actuation mechanism, creating a direct engagement between the actuator unit and the gripping/cutting units. This extraction of unnecessary components reduces device complexity while the direct connection demands higher manufacturing precision for accurate force transmission.
Solution Approach 2:
The retaining element with retaining protrusion acts as a precise intermediary component that ensures accurate engagement between the actuator unit and the gripping unit. This mediator component maintains the necessary precision despite the reduced number of parts by providing a dedicated, precisely-formed engagement interface.
3Volume of moving object
If force adjusting unit is integrated directly with cylinder element, then space utilization is optimized and repairability is simplified, but reliability may be compromised
Solution Approach 1:
The force adjusting unit is nested within or directly integrated with the cylinder element structure. The retaining element is positioned to engage directly with the cylinder element, creating a compact nested arrangement that reduces overall device volume while maintaining structural integrity through direct mechanical connections.
Solution Approach 2:
The force adjusting unit is segmented into distinct components (retaining element, retaining protrusion, spring element) that can be independently manufactured and assembled. This segmentation allows for simplified repairability where individual components can be replaced without disassembling the entire cylinder assembly, while the direct engagement maintains reliability.
4Loss of energy
If retaining element engages directly with cylinder element without additional levers, then friction and wear are reduced, but force alignment precision must be higher
Solution Approach 1:
The patent eliminates intermediate levers and transmission elements between the force adjusting unit and the actuator unit, creating a direct engagement path. This extraction reduces the number of contact surfaces where friction and wear can occur, while the direct connection requires precise force alignment to ensure effective force transmission.
Solution Approach 2:
The retaining protrusion on the cylinder element serves as a precise intermediary that ensures accurate force alignment between the retaining element and the actuator unit. This mediator component provides a dedicated engagement point that maintains proper force direction while minimizing friction through reduced contact surfaces.
Data Source
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AI summary
The disclosure relates to a cable tie tightening device (1) with cutting functionality, comprising a gripping unit (3) configured to grip a cable tie strap and pull the cable tie strap until an adjustable force limit is reached, a cutting unit (4) configured to cut the cable tie strap, an actuator unit (5) configured to automatically actuate gripping unit (3) and cutting unit (4), a force adjusting unit (6) configured to adjust the adjustable force limit, where the gripping unit (3) is attached to a piston element (5a) of the actuator unit (5) at one side of the actuator unit (5) and the force adjusting unit (6) comprises a retaining element (6b) configured to retain a cylinder element (5b) of the actuator unit (5) in a given position until the adjustable force limit is reached, while the retaining element (6b) is configured to be connected directly with the cylinder element (5b) when retaining the cylinder element (5b) in the given position, and to be disconnected from the cylinder element (5b) when the adjustable force limit is reached or exceeded in order to provide an improved cable tie tightening device with cutting functionality (1).