Two-Part Suspension Device for Hammocks with Loop-Free Rope Adjustment

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Solution Overview

Problem

Existing suspension devices for hanging seats and hammocks require cumbersome length adjustments, often involving the formation of loops that can be difficult to operate and pose safety hazards, especially when used by children or in varying environments.

Innovation Solution

A suspension device with a divided body structure, featuring a movable lower part and a upper part with strategically placed apertures for length adjustment without loop formation, ensuring secure and flexible attachment to the hammock or hanging seat, and a rotatable connection for easy movement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the suspension rope is shortened by conventional methods (forming loops and guiding through apertures), then the length adjustment is achieved, but the operation becomes cumbersome and requires practice to master

Engineering Contradiction:

Improveease of length adjustmentVSAvoidcomplexity of rope guide operation

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The suspension device is divided into two separate bodies: an upper body for receiving and guiding the suspension rope, and a lower body for receiving the hammock or hanging seat. This segmentation allows each body to be optimized for its specific function, simplifying the overall operation.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The lower body is made movable relative to the upper body through a rotatable connection, allowing dynamic adjustment of the suspension length and position without requiring complex rope manipulation. This dynamic mechanism enables easy length adjustment while maintaining security.

Inventive Principle:

Principle #15Dynamics

2Reliability

If loops are formed with the suspension rope for attachment, then the connection is secured, but safety hazards arise especially when used by children

Engineering Contradiction:

Improvesecurity of suspension connectionVSAvoidsafety hazards from rope loops

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The harmful loop formation is extracted and replaced by a direct insertion mechanism. The lower body with its receiving means is inserted directly into the upper body, eliminating the need to form loops with the suspension rope while maintaining secure connection through friction and geometric fit.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The lower body acts as an intermediary between the suspension rope and the hammock/hanging seat. It receives the rope in the upper body and provides a secure attachment point for the load, eliminating direct rope loop formation that creates safety hazards.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Ease of manufacture

If the suspension device is fixed at a single location, then the installation is simple, but flexibility to move between different fastening points is reduced

Engineering Contradiction:

Improvesimplicity of installationVSAvoidflexibility to relocate suspension device

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The rotatable connection between the upper and lower bodies enables the suspension device to adapt to different orientations and positions. The lower body can rotate and move relative to the upper body, allowing the device to be easily relocated and reconfigured at different fastening points while maintaining simple installation.

Inventive Principle:

Principle #15Dynamics

4Force

If mechanical spring-loaded fixing elements are used for rope tensioning, then the rope can be tensioned, but the device cannot handle large loads of 150 kilograms and more

Engineering Contradiction:

Improverope tensioning capabilityVSAvoidload bearing capacity

Core Design Contradiction:

ForceVSStrength

Solution Approach 1:

The friction-based fixation utilizes the curved surface geometry of the rope guide channel and the suspension rope contact. This curved geometry creates effective friction contact that can handle large loads without requiring mechanical spring-loaded elements, enabling the device to support 150 kilograms and more.

Inventive Principle:

Principle #14Spheroidality (Curvature)

Data Source

PatentUS10568408B2Suspension device for hanging seats and hammocks

Publication Date: 2020.02.25 LA SIESTA

AI summary

A suspension device for hanging seats and hammocks including apertures arranged in a basic body for receiving and guiding a suspension rope. The basic body is realized in at least two parts and is composed of an upper part which receives the suspension rope to be length-adjustable and a lower part which is movably mounted on the upper part and comprises at least one holding body for the fastening of the hanging seat or the hammock. A first aperture enters into the upper part of the basic body approximately at the top for receiving and guiding the suspension rope and exits out of the upper part again from a side outlet opening. A second aperture extends in the upper part of the basic body and exits from the upper body on both sides and comprises an inlet opening below the side outlet opening of the first aperture.