Internal-gear machine having a divided filling portion

Abstract

Described is an internal-gear machine (10) comprising a casing (12, 80) in which there are provided an internally toothed annular gear (20), an externally toothed pinion (24) in engagement therewith, and a filling portion (28) which is divided into two in the space (14) between the annular gear (20) and the pinion (24). The filling portion parts (32, 34) are provided with openings (56, 58) which start from the common separation surface (30) and which are each provided with an inclined surface (60, 62) that is parallel to the axis, in such a way that the two inclined surfaces (60, 62) which face towards each other form with each other wedge surfaces which include a wedge angle. Bearing against the wedge surfaces is a respectively associated sealing roller (64) which is pressed against the associated wedge surfaces by means of a spring element (88). In order to provide a resilient springing characteristic which is as soft as possible and thereby to afford optimum stabilization in respect of the radial forces involved and a considerable reduction in noise, it is proposed that the corresponding spring element (88) is fixed with a fixing portion (92) to a securing portion (96) of the casing. A spring portion (90) of the corresponding spring element (88) projects away from the fixing portion (92), said spring portion being oriented at least approximately parallel to the axis and pressing against the associated sealing roller (64).

Dependencies are inferred from the claim text.