EP-4741604-A1 - MOTOR ASSEMBLY FOR A ROLL-UP COVER OF A POOL

EP4741604A1EP 4741604 A1EP4741604 A1EP 4741604A1EP-4741604-A1

Abstract

The invention relates to a motorization assembly (2-1) for a retractable pool cover comprising a geared motor having an electric motor (M) supplied with direct current with a direct voltage of at most 30 V, a means for rotating the retractable cover coupled to the geared motor, internal means (6a) for providing information in the form of an external dry contact (Cs) of an extreme state of the cover in the totally closed pool position when the geared motor is in a limit position in a first direction, and internal means (6b) for providing another information in the form of another external dry contact (Cs) of an extreme state of the cover in the totally open pool position when the geared motor is in a limit position in a second direction opposite to the first direction.

Inventors

FRANCISCO, Alexandre
GORLIER, MAXIME

Assignees

MG International

Dates

Publication Date: 20260513
Application Date: 20251105

Claims (15)

Motorization assembly (2-1 to 2-4) for a retractable pool cover capable of providing cover position information in the form of dry contacts, comprising: - a geared motor having an electric motor (M) powered by direct current with a direct voltage of at most 30 V, - a means of rotating the roll-up cover coupled to the geared motor, - internal means (6a) for providing information in the form of an external dry contact (Cs) of an extreme state of the cover in the fully closed basin position when the geared motor is in a limit switch position in a first direction, and - internal means (6b) for providing other information in the form of another external dry contact (Cs) of an extreme state of the cover in the fully open basin position when the geared motor is in a limit position in a second direction opposite to the first direction.
Assembly according to claim 1, wherein at least one of the external dry contacts is made by two potential-free electrical conductors at the output of the geared motor.
Assembly according to claim 1, wherein the two external dry contacts are each made by three electrical conductors, one of which is common to the two external dry contacts.
Assembly according to any one of claims 1 to 3, wherein at least one of the external dry contacts is capable of cooperating with equipment external to the drive assembly such as a system for regulating the water chemistry of the basin.
Together according to any one of claims 1 to 4, wherein the internal means for providing information include means for detecting preset positions of the geared motor's end-of-travel limits, enabling the electric motor to stop when activated and the electric motor to operate normally when not activated.
Assembly according to claim 5, wherein the means for detecting preset positions of the geared motor's limit switches are suitable: - when activated, to provide information, in the form of a dry contact, on the state of the cover in the fully closed basin position or the state of the cover in the fully open basin position, and - when not activated, to provide other information, in the form of the absence of dry contact, of a state of the cover in basin position not totally closed or of a state of the cover in basin position not totally open.
Assembly according to any one of claims 5 and 6, wherein the means for detecting preset positions of the geared motor's end-of-travel limits include analog or digital processing means for providing external information in the form of dry contacts.
Assembly according to any one of claims 5 and 6, wherein the means for detecting preset positions of the geared motor's end-of-travel limits include internal means for counting the number of revolutions made in one direction or the other by the electric motor and for comparing this number of revolutions to the geared motor's end-of-travel limits corresponding to the fully open basin position and the fully closed basin position of the cover.
Assembly according to claim 8, wherein the electric motor includes a detector capable of sending a signal when detecting at least one target attached to the rotation of the electric motor to an electronic card allowing the number of revolutions made in one direction or the other by the electric motor to be counted and compared to the limit switch commands of the geared motor stored in the electronic card.
Assembly according to any one of claims 5 and 6, wherein the means for detecting preset positions of the geared motor's limit switches comprise a gear system (4) rotating with the cover and allowing the simultaneous and opposite translation of two traveling gears up to two stop positions in which said traveling gears actuate the means for detecting preset positions of the end-of-travel limits of the geared motor to stop the electric motor.
Assembly according to claim 10, wherein each stop controls the stopping of the electric motor by means of a contact detector (6a, 6b) capable of taking two positions: a first position allowing the rotation of the electric motor and not returning a dry contact, and a second position not allowing the rotation of the electric motor and returning a dry contact.
Assembly according to claim 11, wherein the contact detector is a microswitch with at least two contacts.
Assembly according to claim 11, wherein the contact detector is a proximity detector.
Assembly according to claim 13, wherein the proximity detector is an inductive sensor, a capacitive sensor, an optical sensor, an ultrasonic sensor or a magnetic sensor.
Assembly according to any one of claims 1 to 14, wherein the cover is a roller shutter, a bar cover, a bubble cover, or a mobile terrace.

Description

technical field The invention relates to the general field of motorization of a retractable pool cover, such as a roller shutter, a bar cover, a bubble cover, or a mobile pool deck. Previous technique Private swimming pools are increasingly being equipped with automatic water treatment systems, such as dosing pumps or salt electrolyzers for chlorine production. Regardless of the treatment system chosen, the chlorine in the pool naturally evaporates from the water. It is therefore important to have a sufficient chlorine source, depending on the size of the pool, to ensure the correct chlorine level in the water relative to evaporation. However, when the pool is covered (by a roller shutter, a bar cover, a bubble cover, a mobile terrace, etc.), the natural evaporation of chlorine is greatly reduced compared to the configuration in which the pool is uncovered. It therefore appears necessary that the automatic water treatment system be informed in real time that the pool is covered in order to reduce the chlorine input and thus avoid a chlorine overdose. For this purpose, most known water treatment systems, and in particular salt electrolyzers, have an electrical input that can receive a dry contact in order to know the state of the basin fully open or the state of the basin fully closed. Generally, this function is performed using an electronic card which receives information from the electric motor of the cover winding about whether the basin is fully open or fully closed and transmits it to the automatic water treatment system. Furthermore, there are two main technologies enabling the electric motor of the cover winding to perform the limit switches (corresponding to the fully open basin state and the fully closed basin state); namely an electronic technology, and a mechanical technology (which is the most widespread). With so-called electronic technology, the electric motor for winding the cover includes a sensor (e.g., microswitch, inductive, Hall effect, encoder wheel, etc.) which sends a signal to a An external electronic board detects one or more targets per motor revolution. This board counts the number of signals received from the motor sensor and determines whether the pool is fully open or fully closed (a predetermined number of signals corresponds to a fully open pool, and a second predetermined number of signals to a fully closed pool). The board then processes the cover's position information and transmits it via a dry contact to the automatic water treatment system. With this mechanical technology, the electric motor that winds the cover includes a system of gears that rotate with the motor. As these gears rotate, they allow the simultaneous and opposite movement of two other traveling gears until they reach the position of two stops. When these stops are reached, they activate sensors (e.g., microswitches) to determine the limit switches. The sensors then transmit the limit switch signals to an electronic control board, which processes the cover's position information and communicates it via a dry contact to the automatic water treatment system. Both of these technologies have the disadvantage of having an electronic board that processes the position information of the cover and communicates it via a dry contact to the automatic water treatment system which is external to the cover motorization system, which complicates the operation of the whole. Description of the invention The present invention therefore aims to provide a motorization assembly integrating a system to provide cover position information in the form of dry contacts directly to the automatic water treatment system. According to the invention, this goal is achieved through a motorization system for a retractable pool cover capable of providing cover position information in the form of dry contacts, comprising: a geared motor having an electric motor powered by direct current with a direct voltage of at most 30 V, a means of rotating the roll-up cover coupled to the geared motor, internal means for providing information in the form of an external dry contact indicating an extreme state of the cover in the fully closed basin position when the geared motor is in a limit switch position in a first direction, and internal means to provide other information in the form of another external dry contact of an extreme state of the cover in the fully open basin position when the geared motor is in a limit position in a second direction opposite to the first direction. The invention is remarkable in that the motor assembly internally includes means capable of providing an external system (e.g., an automatic water treatment system) with cover position information in the form of external dry contacts. In particular, the system according to the invention does not require the use of an electronic circuit board. According to one embodiment, at least one of the external dry contacts is made by two potential-free electrical conductors at the outp