Odor trap device for sanitary fixtures, in particular urinals

1. An odor trap device for sanitary fixtures, in particular urinals, having a drainage element which has a pipe section, the pipe section defining a sealing wall,

having a sealing diaphragm which is in sealing contact with the sealing wall in a closed position and is pushed away from the sealing wall into an open position by backed-up fluid, such as urine, and

having a holder for mounting the sealing diaphragm relative to the sealing wall,

the sealing diaphragm is fixed on the holder, the holder being supported below the sealing diaphragm,

characterized in that the holder is in contact with the pipe section below the sealing diaphragm.

2. The odor trap device according to claim 1 ,

characterized in that the sealing diaphragm has a rubber-elastic, upwardly tapering accumulation section and a rubber-elastic, substantially hollow-cylindrical section adjoining the accumulation section as seen in the discharge direction, the outside of the accumulation section delimiting with the pipe section an annular, uninterrupted inlet channel which tapers towards zero as seen in the discharge direction.

3. The odor trap device according to claim 1 ,

characterized in that the sealing diaphragm is fixed to a projection of the holder, the projection being arranged on the upper side or tip of the holder and having an annular groove or undercut to which the sealing diaphragm is sealingly buttoned.

4. The odor trap device according to claim 1 ,

characterized in that the holder has a domed or spherical-segment-shaped section on which the sealing diaphragm rests.

5. The odor trap device according to claim 1 ,

characterised in that the holder has support legs which are spaced to the inner surface of the sealing diaphragm and project downwards with respect to a lower edge of the sealing diaphragm.

6. The odor trap device according to claim 5 ,

characterized in that the support legs are connected to one another by transverse struts.

7. The odor trap device according to claim 6 ,

characterized in that the transverse struts are arranged below the lower edge of the sealing diaphragm.

8. The odor trap device according to claim 5 ,

characterised in that the support legs have an outwardly angled or obliquely outwardly extending leg section.

9. The odor trap device according to claim 1 ,

characterized in that the pipe section has recesses in which the holder engages.

10. The odor trap device according to claim 1 ,

characterized in that a hood-shaped or cap-shaped cover is arranged above the drainage element and is detachably connected to the drainage element via spacers.

11. The odor trap device according to claim 10 ,

characterized in that the cover laterally projects beyond the drainage element along its entire outer periphery.

12. The odor trap device according to claim 1 ,

characterized in that the pipe section is inserted into a pipe section extension, the pipe section extension being detachably connected to the pipe section and/or the drainage element.

13. The odor trap device according to claim 12 ,

characterized in that the pipe section extension has a shoulder on the inside on which the holder is supported.

14. The odor trap device according to claim 12 ,

characterized in that the pipe section extension and the discharge element have latching elements assigned to one another.

15. The odor trap device according to claim 14 ,

characterized in that the latching elements can be latched together by a rotational movement of the discharge element relative to the pipe section extension.