Toilet tank automatic flush apparatus

Abstract

A toilet tank automatic flush apparatus includes a detection module located outside the toilet water tank, a solenoid valve module and a flush module. The solenoid valve module is located outside the water tank and connected to a water supply head, and is controlled by signals from the detection module to activate a solenoid valve switch to channel water from the water supply head into a hydraulic cylinder of the flush module through a tube to generate a hydraulic pressure to push a hydraulic arm upwards to lift a rocker arm. The rocker arm has a distal end fastening to a rope to connect and open a water discharge valve so that water in the water tank may be flushed into the toilet in a large quantity. The solenoid valve switch stops water supply after a preset time period. A spring located in the hydraulic cylinder pushes the hydraulic arm and the rocker arm downwards to release the rope so that the water discharge valve may be closed and water may flow into the water tank again.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to an automatic flush apparatus that has a detection device to control a solenoid valve to channel water supply to generate a hydraulic pressure to actuate a flush module in a water tank that has a rocker arm to actuate a water discharge valve to perform flushing. [0003] 2. Description of the Prior Art [0004] Water for flushing toilets generally is stored in a water tank or a flush tube. Flush control is done manually or by electric detection. In the known techniques for flushing toilets, using the flush tube generally is controlled manually or by electric detection. In the case of using the water tank to supply water for flushing, manual control is still the most widely used approach. Automatic electric control is still not widely adopted. This mainly results from the concern that electronic elements tend to be short circuit and malfunction when exposed to the damp environment in the w...

AI Technical Summary

Benefits of technology

[0006] The primary object of the present invention is to provide a toilet tank automatic flush apparatus to resolve the disadvantages occurred to conventional toilet detection flush apparatus that are installed in the water tanks and easily damped and malfunctioned.

[0008] The structure set forth above has the electric controlled detection module and solenoid valve installed outside the water tank, thus eliminates the problems of damp and malfunction that might otherwise occur to the electric elements. Moreover, it uses the same water supply of the water tank to generate the hydraulic pressure to control flushing. Thus it consumes no electric power except a little electric power to actuate the DC solenoid valve during the entire operation. The operational elements do not have malfunction problem caused by rustic conditions. It simultaneously solves the disadvantages of power consuming and erroneous operation happened to the conventional electric motor flushing.

Problems solved by technology

Thus it consumes no electric power except a little electric power to actuate the DC solenoid valve during the entire operation.

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