AT396698B - TURNING HANDLE ON A DRAIN AND OVERFLOW DEVICE FOR A TUB - Google Patents

Description

AT 396 698 B

The invention relates to a rotary handle on a drain and overflow device for a tub, in which the valve body of the drain valve can be raised by means of a pulling device by rotating the rotary handle attached to the overflow on a shaft, a plate-shaped driver being releasably attached to the shaft which has a rosette on it. 5 In hospitals, such handles have to be removed and cleaned regularly, as pathogens can accumulate behind them. This is always difficult for the cleaning staff and often the suitable tool is not at hand.

A twist grip of this type is known from DE-OS 2 604 040, which shows a twist grip on an outflow and overflow device, which has a driver, referred to here as a drum, onto which a grip 10 is pushed. The handle is attached by friction. In addition, a prismatic coupling between the drum and the handle should be provided here. How this frictional connection is actually designed constructively can not be removed »: Scripture. In any case, it should not be suitable for regular removal of the handle or rosette. As is well known, such frictional connections are very dependent on dimensional tolerances and material wear, which cannot be avoided by regularly loosening such a connection at the connection points .

Furthermore, ER-PS 1 224 946 shows a handle, in particular for a washing machine, in which a rosette (8) is snapped onto a carrier under elastic expansion. The expansion takes place by means of a 20 conical outer surface of the carrier and is presumably so strong that it comes loose hardly possible and probably not provided here

Finally, DE-OS 2 100 913 shows a handwheel with a pot-shaped base body, on which a handle body is placed. According to claim 7, this handle body consists of elastic material. Here, too, comparatively high forces are probably required for the expansion. In addition, regular removal of the rosette is neither intended nor possible.

The invention is therefore based on the object to provide a rotary handle of the type mentioned, which can be cleaned regularly and in a simple manner even by inexperienced people.

The object is achieved in that the driver has at its edge several projecting and resilient tabs in the radial direction and the inside of the rosette has an undercut extending in the circumferential direction, into which the tabs are detachably engaged.

The rosette of this rotary handle can be lifted off with a simple handle and without tools, after which this and the parts of the overflow fitting arranged behind it can be cleaned effortlessly and thoroughly.

The twist grip according to the invention is also advantageous in terms of design. In this way, the overflow set in the body shop can also be installed without a rosette. This is subsequently selected from an extensive range in various shapes and colors and placed on the carrier. When redesigning the bathroom, the rosette can be easily removed and replaced with a more suitable one.

In terms of assembly technology, it is advantageous that the rosette can be placed in several rotational positions, so that, for example, in the case of a triangular and labeled rosette, an inclined position of the overflow line can be compensated for. Since the rosette does not require a high level of symmetry, there are fewer restrictions in terms of shape than before.

The design of the twist grip according to claim 2 ensures a rotationally secure fastening of the rosette in a structurally simple manner.

An embodiment of the invention is explained below with reference to the drawing. 45 shows a section through a turning handle and part of a tub wall and part of a waste and overflow fitting in view,

2a is a view of a driver, seen from behind,

2b is an axial section through a driver,

3a shows a view of a rosette, seen from behind, and FIG. 3b shows an axial section through a rosette.

Fig. 1 shows the upper part of a waste and overflow set with a housing (11) which is attached to the overflow opening (14) of a tub, for example a bathtub. A Bowden cable, not shown here, is attached to the housing (11) with which the drain valve can be opened. The Bowden cable is connected to an actuating shaft (10) which is mounted in a hub (9) and which can be rotated on a rotary handle (20) 55. The handle (20) is mounted at a distance from the wall (12) of the tub so that the water can flow through an overflow cover (13) with openings and the opening (14) into the overflow line connected to the housing (11) and not shown here .

The rotary handle (20) has a plate-shaped driver (1) with a socket (16) formed on the inside, which is fixed to the actuating shaft (10) with a clamping screw (8). The connector (16) 60 and the shaft (10) and an intermediate piece (15) are square, so that the shaft (10) can not spin. As FIGS. 2a and 2b clearly show, the driver (1) has at the edge a plurality of lobes (3) arranged in a crown, which extend obliquely outwards with respect to the axis of rotation »}. The 2-

Claims (3)

AT 396 698 B tabs (3) are designed to be resilient in the radial direction and each have an edge (19) extending in the circumferential direction on the outside, which is slightly raised and which makes an angle of approximately 90 ° with the adjacent side faces, whereby the bisector is approximately perpendicular to the axis of rotation. The rosette shown in FIGS. 3a and 3b is detachably attached to the driver (1). The rosette (2) 5 is also plate-shaped and has a closed side wall (6), which is formed on a slightly outwardly curved end wall (7). On the inside of the end wall (7) there is an undercut (5) extending in the circumferential direction. attached in which the tabs (3) are snapped in the area of the edges (19), the side wall (6) or the undercut (5) are dimensioned so that the rosette (2) by hand with comparatively little axial pressure on the driver ( 1) can be snapped on and, if necessary, lifted off again with 10 pulls. On the inside of the side wall (6), three pairs of cams (4) are attached which engage between adjacent tabs (3) and ensure a rotationally secure connection between the rosette (2) and the driver (1). The rosette (2) has a three-fold rotational symmetry and can be labeled on the triangular front wall (7). The side wall (6) formed on the end wall (7) is circular in the region of the undercut (5) 15 and runs steeply at the corners and is inclined outwardly between them to the end wall (7). Both the rosette (2) and the driver (1) are made of plastic. 20 PATENT CLAIMS 25 1. Rotary handle on a drain and overflow device for a tub, in which the valve body of the drain valve is rotated by rotating the handle on the overflow on a shaft can be raised by means of a pulling device, a plate-shaped driver, on which a rosette is placed, being detachably fastened to the shaft, characterized in that the driver (1) has at its edge a plurality of projecting tabs (30) which are resilient in the radial direction, and the rosette (2) has on the inside an undercut (5) extending in the circumferential direction, into which the tabs (3) are detachably engaged. • 2. Rotary handle according to claim 1, characterized in that the rosette (2) has cams (4) on the inside which engage between the tabs (3). 35 3. Twist grip according to claim 1 or 2, characterized in that the tabs (3) with respect to the axis of rotation of the handle (20) are inclined outwards. 40 Including 2 sheets of drawings -3-