Cordage Box Layout for Lower Torque and Stable Load Output
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Solution Overview
Problem
Cordage-type output devices face challenges in bearing large loads and torques, requiring high structural reliability due to the high mechanical stress they endure during use.
Innovation Solution
The output device incorporates a design with a cordage box connected to a base via a connecting structure, balanced weight distribution with a motor and power supply on opposite sides, and a locking apparatus to prevent rotation during power loss, along with a heat dissipation system to maintain operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cordage box is used to store and retract the cordage, then the cordage can be wound and arranged along the axial direction facilitating retraction and release, but the device is subjected to large torque and mechanical stress during use
Solution Approach 1:
The cordage box is divided into multiple functional components including the reel, connecting structure with limiting portion, locking apparatus, and heat dissipation system. Each component is independently designed to handle specific aspects of the torque and operational requirements, distributing the mechanical stress across multiple segmented elements rather than a single monolithic structure.
Solution Approach 2:
The locking apparatus is pre-configured to engage with the reel when power is lost or during operation to prevent rotation. The heat dissipation system is pre-arranged with heat dissipation holes and channels to continuously manage thermal buildup. These preliminary actions ensure structural reliability is maintained before critical failures can occur during high-torque operation.
2Stability of the object's composition
If the motor and power supply are placed on opposite sides of the cordage box, then balanced weight distribution is achieved, but the device complexity increases
Solution Approach 1:
The motor and power supply are positioned asymmetrically on opposite sides of the cordage box rather than in a conventional centralized arrangement. This asymmetric distribution creates a balanced center of gravity that enhances operational stability during cordage retraction and release, while the symmetry of having components on opposite sides maintains a degree of structural regularity that limits complexity increase.
3Temperature
If heat dissipation holes are provided on the cordage box, then heat dissipation effectiveness is improved, but the structural strength may be compromised
Solution Approach 1:
Heat dissipation holes are provided at specific localized positions on the cordage box rather than uniformly distributed throughout. The connecting structure includes limiting portions and locking apparatus at critical high-stress areas to compensate for the localized material removal. This selective placement ensures heat dissipation occurs where thermal buildup is most problematic while structural integrity is maintained at load-bearing locations.
Data Source
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AI summary
An output device and an output assembly are provided. The output device includes: a cordage box, a connecting structure configured to be fixedly connected to a base being provided on a rear side of the cordage box, and a traction cordage in the cordage box being led out from a front side of the cordage box; a motor, which is fixedly connected to the cordage box and is configured to provide a traction force for the traction cordage; and a power supply assembly, which is fixedly connected to the cordage box and is configured to supply power to the motor. In the output device of embodiments of the present disclosure, the rear side of the cordage box is fixedly connected to the base via the connecting structure, and the traction cordage is led out from the front side of the cordage box. Thus, a lever arm is shortened when the traction cordage is subjected to a force, so as to reduce a torque borne by the cordage box, which reduces the requirement of the strength of the cordage box and facilitates more stable fixation of the cordage box on the base.