Automatic Swimming Pool Cover Apron for Dual-Edge Hooking

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Solution Overview

Problem

Existing pool safety shutters require manual attachment to both the distal and proximal edges of the pool for effective safety positioning, which is cumbersome and not fully automated.

Innovation Solution

A pool safety shutter with an apron featuring a main and secondary portion, each equipped with automatic hooking devices, and a connecting assembly that allows the apron to be automatically attached to both edges upon deployment, utilizing articulations and gravity-assisted mechanisms for seamless engagement with the pool edges.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual attachment devices are used for the apron, then the shutter can be attached to the pool edges, but the operation becomes cumbersome and requires manual intervention

Engineering Contradiction:
Improveattachment operationVSAvoidattachment automation
Core Design Contradiction:
Ease of operationVSExtent of automation

Solution Approach 1:

The attachment device is designed to automatically attach the apron to the pool edges without manual intervention. The spring mechanism stores energy during apron deployment and automatically engages the attachment element with the pool edge structure, making the system self-actuating rather than requiring manual operation.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The spring element is pre-loaded during the apron deployment process, storing mechanical energy in advance. This preliminary action enables the automatic engagement of the attachment device with the pool edge when the apron reaches its extended position, eliminating the need for manual attachment operations.

Inventive Principle:
Principle #10Preliminary action

2Ease of operation

If the winder is positioned above the pool surface, then the apron can be easily deployed, but automatic attachment to both edges cannot be achieved

Engineering Contradiction:
Improveapron deploymentVSAvoiddual-edge attachment
Core Design Contradiction:
Ease of operationVSExtent of automation

Solution Approach 1:

The attachment device operates in a different dimensional space than the winder mechanism. By positioning the attachment element on the apron and the fixed element on the pool edge structure, the system creates a new degree of freedom that enables automatic engagement independent of winder position, allowing both above-surface winding and automatic dual-edge attachment.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The shutter system is divided into functionally independent segments: the winder mechanism for deployment control and the attachment device for edge engagement. This segmentation allows each component to perform its specific function optimally, with the winder managing apron deployment and the attachment device handling automatic edge securing.

Inventive Principle:
Principle #1Segmentation

3Extent of automation

If automatic hooking devices are implemented, then attachment automation is improved, but the device complexity increases

Engineering Contradiction:
Improveattachment automationVSAvoidattachment device structure
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The complex spring mechanism and attachment elements are extracted as a separate, modular attachment device that can be independently designed, manufactured, and maintained. This extraction simplifies the overall system by isolating the automated attachment function into a distinct component with its own optimized structure.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The spring element acts as an intermediary that converts the deployment motion into automatic engagement force. This intermediary component mediates between the apron deployment process and the edge attachment requirement, simplifying the interaction between these two functions while enabling automatic operation.

Inventive Principle:
Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Facilitates automatic and efficient attachment of the shutter to both the distal and proximal edges of the pool, enhancing safety and convenience without manual intervention.

Implementation Method 1

a spring element (431), arranged so as to be stretched when the apron (2) is deployed and to cause, by its stretching, actuation of the attachment device (13)

Methodology Applied
Scientific EffectElastic potential energy: Elasticity

Implementation Method 2

a gravity mechanism (432), arranged so as to be actuated when the apron (2) is deployed and cause, by its actuation, actuation of the attachment device (13)

Methodology Applied
Scientific EffectGravity: Gravitation

Data Source

PatentEP4600442A1Automatic swimming pool cover
Publication Date: 2025.08.13 DIFFUSION EQUIPS LOISIRS
  • EP4600442A1 patent drawingFigure 1~3
  • EP4600442A1 patent drawingFigure 4~5
  • EP4600442A1 patent drawingFigure 6~7

AI summary

A safety shutter (1) for a pool (3), in particular the pool (3) of a swimming pool, comprises an apron (2) with a main portion (7) and at least part of a first automatic hooking device. This part is mounted on the main portion (7), in the vicinity of a front end (15). The shutter (1) further comprises a connecting assembly (10), by means of which the apron (2) is connected to a reel (5). This connecting assembly (10) is attached to the main portion (7) of the apron (2), in the vicinity of a rear end. The apron (2) further comprises a secondary portion (9) and at least part of a second automatic hooking device. This part is mounted on the secondary portion (9), in the vicinity of a front end (17).The connecting assembly (10) is further attached to this secondary portion (9), in the vicinity of a rear end opposite the front end (1) and close to the rear end of the main portion (7).