Adjustable Cable Telescopic Conduit Locking
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Solution Overview
Problem
Existing cable systems for transmitting axial forces, particularly in entryway devices, face challenges with precise length requirements, leading to increased costs and complexity due to the need for multiple cable lengths and irreversible adjustments, which can impact the quality and operation of installations.
Innovation Solution
A conduit system with a telescopic design and a core wire, where the conduits are adjustable between multiple axial lengths, secured by a conduit locking device, allowing for precise length adjustments and secure positioning, reducing the need for multiple cable lengths and enabling fine-tuning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple cable lengths are provided to accommodate different installation requirements, then the adaptability of the cable system is improved, but the device complexity and installation cost increase due to the need to maintain inventory of different length cables
Solution Approach 1:
The cable system employs a telescopic conduit structure that allows dynamic adjustment of the cable length between minimum and maximum extents. The inner conduit can slide within the outer conduit, enabling the cable length to be adjusted based on installation requirements without requiring multiple pre-manufactured cable lengths.
Solution Approach 2:
The cable assembly is divided into segmented components including an outer conduit, an inner conduit, and a core wire. These segments can be independently adjusted and positioned, allowing the overall cable length to be customized for different installations while maintaining structural integrity.
2Manufacturing precision
If cable length is made adjustable to accommodate fine-tuning requirements, then the manufacturing precision and installation quality are improved, but the device complexity increases due to the need for adjustment mechanisms
Solution Approach 1:
The telescopic conduit structure provides a simple yet effective adjustment mechanism where the inner conduit can slide within the outer conduit to achieve precise length adjustments. This dynamic structure allows for fine-tuning of cable length without requiring complex adjustment devices.
Solution Approach 2:
The cable system provides adjustment capability beyond what is strictly necessary, allowing the cable length to be extended or reduced in increments. This partial adjustment approach enables precise length selection while keeping the adjustment mechanism simple.
3Reliability
If the cable length is fixed to ensure precise force transmission, then the reliability of the system is improved, but the adaptability decreases when subsequent adjustments are needed
Solution Approach 1:
The cable system transitions from a fixed length design to a dynamic adjustable design. The telescopic conduit allows the cable length to be adjusted while maintaining secure locking positions, ensuring reliable force transmission at any selected length.
Solution Approach 2:
The cable assembly includes self-adjusting features where the telescopic conduit can be easily extended or retracted and locked into position without requiring external tools or complex adjustment procedures, enabling field adjustments while maintaining reliability.
Data Source
AI summary
An adjustable length cable system that can be used in association with transmission of an axial pulling force. The cable system, which can be concealed within and/or behind a structure such as, for example, within an interior region of an entryway device, can accommodate adjustments in the axial lengths of a core wire and a conduit system of the cable system. The core wire can extend through, as well as beyond, the conduit system, and be connected to end fittings and/or connectors that can be used to transmit a pulling force to and/or from one or more components. In some embodiments, the conduit system can include an inner conduit telescopically coupled to an outer conduit such that the axial length of the conduit system is adjustable. Further, the relative axial positions of the inner and outer conduits may be retained by activation of a conduit locking device.