Device for reducing pressure pulsations

摘要

The invention relates to a device that is always open for the pressure medium for reducing pressure pulsations and that can be switched between a pressure chamber of a slave cylinder and a pressure chamber of a master cylinder of a hydraulic force transmission system for motor vehicles. The device has an additional line section in the form of a channel having an opening on the slave cylinder side, an opening on the master cylinder side, and a channel length equaling a multiple of the direct distance between the two openings, and a volume receiver that can be elastically deformed under pressure, wherein the channel and the volume receiver are combined into an assembly in a housing. The result according to the invention is a device that not only has very good vibration dampening properties, but is also very compact and has a cost-effective design.

主权项

1. A device for reducing pressure pulsations being connectible between a pressure chamber of a slave cylinder and a pressure chamber of a master cylinder of a hydraulic force transmission system, for motor vehicles, and constantly open to the pressure medium, said device comprising:
a channel having a helix section defining an opening at the slave cylinder side and an opening at the master cylinder side, and having a channel length equal to a multiple of the direct spacing of the two openings, a one-piece volume receiver which is comprised of a material resiliently deformable under pressure, characterized in that the channel and the volume receiver are combined in a housing in such a way that the helix section, and the volume receiver are arranged in the housing in a mutually coaxial positional relationship with one substantially surrounding the other wherein the volume receiver separates a pressure medium section from an air chamber and is arranged in a blind bore which forms a dead end so that the pressure medium does not flow through the volume receiver; and the helix section of the channel is formed at an outer circumference of an insert member as a groove that radially extends about a common wall with the blind bore, the groove being covered radially outwardly by an inner circumferential surface of the housing.