Clothing Drying Device Hook Design to Reduce Rope Bending Damage
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Solution Overview
Problem
Existing clothing drying devices cause rope damage due to repeated bending and excessive tension when changing the direction of the rope, leading to potential breakage.
Innovation Solution
A clothing drying device with a rope and receiving member design featuring an arc-shaped inner surface and flat surfaces that allow the rope to straddle and hook securely, reducing sharp bends and tension on the rope, and including a groove portion with an increasing diameter and pole portions to guide the rope gently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a general hook is used to change the direction of the rope, then the rope can be hooked on the socket installed on a different wall surface, but the rope is greatly bent at the hook position or large tension is applied to the rope, causing repeated bending and potential breakage
Solution Approach 1:
The hook portion is designed with an arc-shaped inner surface that matches the curvature of the rope. This curved geometry allows the rope to bend gently around the arc rather than forming sharp angles, distributing the bending stress along the rope's length and preventing concentrated stress points that would lead to breakage.
Solution Approach 2:
The receiving member acts as an intermediary component between the rope and the socket. Instead of directly hooking the rope onto a sharp-edged socket or general hook, the receiving member's arc-shaped hook portion mediates the connection, providing a smooth transition surface that protects the rope from direct contact with sharp edges and excessive bending.
2Strength
If the rope is hooked on a sharp-edged hook or socket, then the connection is secure, but the rope experiences large tension concentration and repeated bending at the same location, leading to damage
Solution Approach 1:
The hook portion features an arc-shaped inner surface with a radius of curvature designed to match the rope's diameter. This curvature distributes the contact force along an arc length rather than concentrating it at a single point, reducing peak tension stress on the rope while maintaining secure connection.
Solution Approach 2:
The receiving member incorporates a groove portion at the hook location with a width specifically designed to accommodate the rope diameter. This localized geometric feature creates a gentle cradle that supports the rope, preventing sharp bends while maintaining connection strength through the combination of arc-shaped surfaces and targeted groove geometry.
Data Source
AI summary
A clothing drying device including: a rope having a rope main body and a grip portion provided at the tip of the rope main body; a main body storing the rope so that the rope can be polled out to the outside; and a receiving member provided independently of the main body and having a receiving member main body and a hook portion protruding from the receiving member main body, wherein the hook portion has an inner surface having an arc cross section and a pair of first flat surfaces provided on both sides sandwiching the inner surface, and the rope main body can be hooked so as to straddle at least one of the pair of first flat surfaces, and the inner surface.