Piston pump for delivering fluids and associated vehicle brake system

摘要

The disclosure relates to a pistol pump for delivering fluids comprising a piston, a cylinder element, and a pressure chamber arranged between an inlet valve and an outlet valve. The pressure chamber is closed off by a cover. The outlet valve comprises a closing body, a preload device which acts on the closing body, and a supporting mechanism configured to support the preload device. The outlet valve is arranged on the outer circumference of the cylinder element and adjusts a fluid flow conducted through at least one outflow opening between the cover and the cylinder element. The closing body is configured as a movable annular disk guided on the cylinder element, the inner diameter of which annular disk is matched to the outer diameter of the cylinder element.

主权项

1. A piston pump for delivering fluids comprising:
a piston; an inlet valve; an outlet valve including (i) a closing body, (ii) a pretension device acting on the closing body, and (iii) a supporting surface configured to support the pretension device; a cylinder element defining a pressure chamber between the inlet valve and the outlet valve; and a cover configured to close the cylinder element, wherein the outlet valve is arranged on an outer circumference of the cylinder element and is configured to adjust a fluid flow conducted through at least one outflow opening defined between an inner surface of the cover and an outer surface of the cylinder element, and wherein the closing body includes a movable annular disk guided on the cylinder element, an inner diameter of the movable annular disk adapted to an outer diameter of the cylinder element, wherein:
the pretension device includes a spring element, andin the closed state the pretension device presses the closing body against a seal seat arranged on the cover, and wherein the closing body is configured (i) to seal radially against the cylinder element with a first sealing surface in the closed state, and (ii) to seal axially against the cover with a second sealing surface in the closed state.