DE202016001893U1 - Drain plug for sanitary area with magnetic extraction - Google Patents

Abstract

Drain plugs for the sanitary sector, characterized in that a drain plug consists of 3 different materials. The star-shaped lower part (1) is made of a plastic injection molding with excess to the inner diameter of the drain fitting. The head of the plug is made of magnetizable iron material with chrome coating. (2). Both parts are connected with a stainless steel cylinder head screw (4).

Description

The patent application relates to a drain plug for the sanitary area with self-retaining feature in the sink fitting and magnetic exhaust technology.

State of the art

The disadvantage of the known prior art is that a mechanical lever linkage is necessary for raising or lowering the plug, which is located below the plug in the drain valve. Another drain plug does not need this linkage, as it holds by its elastic excess self-locking in the drain valve. But this plug needs a pull-out or a pull tab on the stopper head, so that it can be lifted. The disadvantage with the linkage is that hair and other debris can stick to it. The disadvantage of the self-locking plug is that must be used to pull out the plug in the dirty water.

Problem:

The invention specified in claim 1 is based on the problem of producing a stopper that requires neither a mechanical linkage, nor a pull-out button or a pull-tab to open or close the sink fitting.

task

The achievable with the present invention consist in particular that is made possible by the absence of auxiliary structures in the drain valve unhindered outflow of dirty water and the plug can be pulled out without having to resort to the wastewater. Due to the absence of the lifting rod in the drain fitting, it is possible to clean the drainage pipe into the siphon manifold with a commercially available cleaning spiral. The external, active magnet ensures that there are no structural parts in the plug head, such as metal springs and other sliding metal parts that would be subject to corrosion and contamination.

The solution

The problem is solved with the features mentioned in the characterizing part of claim 1.

Drain plugs for the sanitary sector, characterized in that the drain plug consists of 3 different materials. The star-shaped lower part ( 1 ) consists of a plastic injection molding. The stopper head ( 2 ) is made of magnetizable ferrous material protected from corrosion by a chrome plating or other chemically resistant coatings. Both parts are connected with a stainless steel cylinder head bolt ( 4 ). The plug is pulled out of the drain fitting with a commercially available, round pot magnet ( 3 ). For this purpose, the magnet is lowered on a non-magnetic stainless steel chain into the water-filled tank, where it detects the plug by magnetic force, without having to be precisely targeted, even if it is opaque and polluted water. The plastic injection-molded part is made with oversize to the inner diameter of the drain fitting, so that it can hold by its elastic excess on the inner diameter of the drain fitting self-locking. The elastic excess is achieved by a corresponding cross-sectional geometry, according to claim 2. The plug is suitable for drain fittings of 1.1 / 4 inches.

So that at maximum opening of the drain plug sufficient adhesion and guidance is given, the length of the star profile should be about 1.5 times the inner diameter of the drain fitting.

Common drain fittings have 1¼ inches and an inner pipe diameter usually of 35 mm. The elastic excess of the plug base is then 39 mm. For 1½-inch drain fittings, this results in an excess of 45 mm for the lower part of the plug.

Summary

The invention relates to a drain plug for the sanitary area and is suitable for drain fittings of 1¼ inches. Such drain fittings are z. B. used in hand basins, shower trays and bidet's. In order to hold the plug in the open state in the fitting, no lifting and holding rods is no longer needed because the plug with its 3-arm plastic base holds by its excess elastic in any position on the inner drain pipe. With the 3-arm geometry, a maximum, free cross section of 88% is achieved, whereby in the open position, the dirty water can flow away without resistance. Thus, there are no more Konstruktiosteile in the drain pipe to which hair, fibers and other debris can get stuck. Deposits that lead to foul smell no longer exist. Due to the lack of auxiliary structures in the drainpipe, the cleaning up to the siphon manifold of any housewife or caretaker can be carried out with a commercial cleaning spiral, without any technical assistance. The plug head consists of a corrosion-resistant, magnetizable iron material. Both parts, the base and the plug head are connected with a stainless steel screw. The screw also serves as a stable axle to hold the base in the middle of the drainpipe. With a commercially available pot magnet, the plug can be pulled out of the valve by magnetic force. So that the user does not have to reach into the polluted water, the magnet is attached to an approximately 25 cm long, non-magnetic, stainless steel chain. Due to the electro-magnetic laws, the magnet, even in polluted, opaque water (liquid) seeks the strongest point on the stopper head, without having to be precisely targeted. By moving sideways to the plug head, the external magnet is removed. The plug may also remain so long on the magnet and be deposited near the handle until any cleaning of the sink is completed. Thereafter, the plug can be used again in the drain valve in x-any open position or closed position. It is important to the inventor that the active part of the magnet extraction is not in the plug head where it is exposed to all chemical attack and contamination. The necessary extraction force for the drain plug is approx. 05 kg for 11/4 inch drain fittings. The adhesive force of a commercially available pot magnet is adapted to it.

Claims (14)

Drain plugs for the sanitary sector, characterized in that a drain plug consists of 3 different materials. The star-shaped lower part ( 1 ) is made of a plastic injection molding with excess to the inner diameter of the drain fitting. The head of the plug is made of magnetizable iron material with chrome coating. ( 2 ). Both parts are equipped with a cylinder head screw ( 4 ) made of stainless steel. Drain plug for the sanitary area according to claim 1, characterized in that the self-clamping lower part ( 1 ) has a star-shaped cross-sectional geometry, with which an elastic excess to the inner diameter of the drain fitting is generated. The cross section of lower part ( 1 ) shows a 3-armed star whose ends form an equilateral triangle. The three arms are bent semicircular and connected in the middle of the star to form an axle. The insides of the bent arms all point in the same direction of rotation. Drain plug according to one of the preceding claims, characterized in that the lower part by its 3-arm cross section has a desired, maximum, free cross section of 88%. Drain plug according to one of the preceding claims, characterized in that in the axial center of the lower part ( 1 ) has a through hole for receiving the fastening screw ( 4 ). Drain plug according to one of the preceding claims, characterized in that the length of the lower part ( 1 ) which should have about 1.5 times the inner diameter of the drain fitting, so that the drain plug at maximum opening still sufficient adhesion and guidance is given. Drain plug according to one of the preceding claims, characterized in that the plastic has a good chemical resistance to all known household cleaners and fruit acids. The temperature resistance is + 90 ° C. Drain plug according to one of the preceding claims, characterized in that the plug head ( 2 ) has the shape of a truncated cone in cross section. In the base center of the truncated cone is the threaded hole for the fastening screw. ( 4 ) with a depth of 1.5 × thread diameter. Drain plug according to one of the preceding claims, characterized in that the tapered part of the plug head is delimited by a circular, central surface which runs parallel to the base of the plug head. The surface has at least the same diameter as the external, round pot magnet. Drain plug according to one of the preceding claims, characterized in that the screw length ( 4 ) is dimensioned so that a firm connection with the plug head is produced, without the lower part ( 1 ) is loaded, so that the lower part against the stopper head ( 2 ) is still slightly twisting. Drain plug according to one of the preceding claims, characterized in that in the stopper head ( 2 ) a groove is screwed in to receive the sealing ring. Drain plug according to one of the preceding claims, characterized in that it is painted for chemical resistance against all known household cleaners, fruit and food acids chromed, gilded, nickel-plated or any x color. Drain plug according to one of the preceding claims, characterized in that the active magnet outside the plug head ( 2 ) and contains no metal springs or other sliding parts. Drain plug according to one of the preceding claims, characterized in that the cylinder head screw ( 4 ) used to connect the lower part ( 1 ) and stopper head ( 2 ) is necessary, at the same time serves as an axis to keep the base stable in the middle of the drain fitting. Drain plug according to one of the preceding claims, characterized in that a commercially available pot magnet ( 3 ), to which a non-magnetic chain, approximately 25 cm long, is attached, is used to pull out the plug.

Images