Filling level alarm system for bath is battery operated and attached to the bath wall by suction pad

The invention relates to a water level signal transmitter with a voltage source and an acoustic signal transmitter, preferably for bathtubs, but which is also suitable for all other containers to be filled with a liquid.

When letting in bath water, it takes a certain amount of time until the water level has reached the desired level. Since one is distracted from observing the fill level, especially towards the end of the running-in period, it can easily happen that the desired fill level is exceeded. In the best case, the water then runs off through the overflow opening.

The invention is therefore based on the object of creating a water level signal transmitter, especially for bathtubs, which can be adjusted to the respectively desired fill level and emits an acoustic signal when this fill level is reached.

To solve this problem, the invention creates a water level signal generator with the features of claim 1. This can be attached to the inner wall of the bathtub with a suction cup according to the desired fill level and switches on an acoustic signal generator when actuated by the water level.

The housing is preferably adjustable in height and can be attached to the inside of the bathtub. The easiest way to adjust the height of the housing in relation to the bathtub, and thus the desired fill level, is to use a suction cup.

Further particularly important features are specified in the subclaims and described with reference to the drawing of an exemplary embodiment. This exemplary embodiment is characterized in that it can be easily produced with simple means and simple components, the housing being formed by an elongated body such as a piece of pipe and two closure caps. The housing with the brackets required in its interior can also consist of a different material.

The device can remain on the inside of the bathtub, even if the water level increases as a result of the person climbing and the device is thereby immersed in the water.

Fig. 1 shows the vertical position in the operating state.

Fig. 2 shows the horizontal position in the deactivated state.

Fig. 3 shows the basic principle as a longitudinal section of the invention.

Fig. 4 shows the basic principle of the function in the vertical state with the flexible waterproof envelope.

Fig. 5 shows the technical structure.

A preferred exemplary embodiment is described below with reference to FIGS. 1 to 5:

The water level signal transmitter 1 has two independent rooms, a self-insulated and closed by the container 7 room with a battery 6, an acoustic signal transmitter 5, a wire spiral body 6c and electrically conductive connecting parts 5a, 5b, 6a, 6b and a surrounding the insulated interior External space which is delimited by a body 3 with a water inlet opening 2b and an outlet opening 2a.

The rising ambient water can penetrate unhindered at the water inlet opening 2b and exert pressure on a spiral space 7b surrounding the wire spiral body 6c.

AT 500 072 B1

At the outlet opening 2a, the amount of air remaining in the outside space can escape unhindered when the water rises.

The alarm signal also emerges from the outlet opening 2a and is reflected back into the room as sound from the tub.

The container 7 in the form of a condom is hermetically sealed.

The end of the condom, preferably sealed with a knot 7a, is guided slightly stretched over the edge at the end of the body 3 and clamped.

The cap 2 pushed over the body 3 (FIG. 3) prevents the node 7a from retreating, leaving an approximately conical air space 9 and the membrane of the signal transmitter 5 can also vibrate freely. The tight fit of the cap 2 at the end of the body 3 also increases the sealing of the condom.

The device is pressed against an inner side surface, for example a bathtub, with the suction cup 4, which is guided in an articulated manner on the device.

The device can now, in spite of the adhesion of the suction cup 4, be positioned vertically or horizontally via the joint 4b for activation and deactivation.

In the vertical position 1a (FIG. 1), the rising water can compress the wire spiral body 6c, which is located in the closed container 7, upwards, whereby the air contained therein can escape from the spiral space 7b upwards into the air space 9.

When the wire spiral body 6c is compressed, when a certain water pressure is reached, the inwardly protruding wire end 6d is pressed against a contact point 6b, as a result of which a circuit to the signal transmitter 5 is closed via a cable 6a.

If the device is now rotated horizontally (FIG. 2), the wire spiral body 6c relaxes, the spiral space 7b expands and sucks in the previously expressed air again.

In this horizontal position, despite the water pressure, no alarm is triggered because the water pressure also acts on the air space 9 in the same ratio.

The device can remain on the inside of the bathtub, even if the water level increases as a result of the person climbing and the device is thereby immersed in the water.