Valves with spherical sealing elements

A technology of sealing elements and guiding elements, applied in pump elements, variable displacement pump parts, parts of pumping devices for elastic fluids, etc., can solve problems such as applying mechanical load, vibration and noise of valve closing body, Achieving the effect of low manufacturing cost

Inactive Publication Date: 2015-10-14
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These pressure fluctuations not only vibrate the valve closing body, but also cause significant noise and impose mechanical loads on the piston pump and the hydraulic components connected to it

Method used

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  • Valves with spherical sealing elements

Examples

Experimental program
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Effect test

Embodiment Construction

[0027] The valve closing body 10 comprises a hollow cylindrical guide element 12 and a spherical sealing element 14 . The guidance of the valve closing body 10 is significantly expanded in the axial direction by the guide element 12 and partially surrounds the sealing element 14 by means of the detent 16 . The sealing element 14 can be snapped into and fixed in the guide element by simple assembly steps. The valve closing body 10 is prestressed against a sealing seat 20 , for example a pump cylinder (not shown), by means of a return spring 18 sunk into the open end of the guide element.

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Abstract

The valve has a seal seat (20) arranged in a longitudinal direction to a valve closing body (10). The body has a cylindrical guiding element (12) and a sealing element (14) i.e. ball, that is spherically oriented at the seal seat. The sealing element is provided in longitudinal direction to the guiding element. The sealing element is held by the guiding element. The guiding element has a hollow cylindrical inner chamber in which a return spring is arranged axially, where the guiding element and / or the sealing element are made from plastic.

Description

technical field [0001] The invention relates to a valve for a piston pump having a valve closing body and a valve seat arranged longitudinally opposite the valve closing body. Furthermore, the invention relates to a piston pump with such a valve for a hydraulic or pneumatic system and to the use of the valve according to the invention. Background technique [0002] Valves are used in various ways in piston pumps of hydraulic systems, in particular of vehicle brake systems (DE 39 07 969 A1 and DE 10 2006 048 903 A1). In these brake systems, the piston pump not only controls the pressure in the wheel brake cylinders, but is also used, for example, to return brake fluid from the wheel brake cylinders to the master brake cylinder in the anti-lock braking system (ABS) . ABS is often combined with an antiskid control system (ASR) in which a valve-controlled piston pump is likewise used. The Electronic Stability Program (ESP), which positively influences the vehicle's lateral dy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B53/10
CPCF04B53/1007
Inventor B·舒曼W·舒勒M·舒斯勒
Owner ROBERT BOSCH GMBH
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