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Pump assembly

A technology for pump devices and pump housings, applied to pumps, parts of pumping devices for elastic fluids, piston pumps, etc., can solve problems such as cost improvement, improve life, reduce installation errors, and ensure relative positioning Effect

Active Publication Date: 2015-12-09
CONTINENTAL AUTOMOTIVE TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The costs of manufacture and installation of pump units of the type mentioned at the outset are still to be improved

Method used

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Examples

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Embodiment Construction

[0026] figure 1

[0027] The known pump device 1 has a pump housing 12 and an electric drive 13 which moves a crankshaft linkage 14 via a drive shaft 7 . The two eccentric elements 4 , 4 ′ are arranged adjacent to one another on the drive shaft 7 and essentially each have an approximately cylindrical bearing element 4 and a counterbalance connected to the bearing element 4 or 4 ′ on one side. Element 5 or 5'. The center points of the two support elements 4, 4' are arranged offset relative to each other at a rotation angle of 180° around the axis of rotation R. In order to keep these prescribed rotational angular positions of the two eccentric elements constant relative to each other, the eccentric elements have as in figure 2 The anti-torsion structure described in. The crankshaft linkage 14 has two connecting rods 3, 3', which are rotatably fixed on bearing elements 5, 5' via ball bearings 15, 15', respectively. The connecting rods 3, 3' end in elastic pressing elements...

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Abstract

The invention relates to a pump assembly (1) for supplying negative pressure to a pneumatic brake booster, wherein the pump assembly has at least two elastic displacement elements (2, 2') which are moved by connecting rods (3, 3'), said connecting rods (3, 3') each being rotatably mounted on an eccentric element (4, 4'). The eccentric element (4, 4') has a bearing seat element (5, 5') and a force element (6, 6'). At least two eccentric elements (4, 4') are secured next to each other on a drive shaft (7) that rotates about an axis of rotation (R), and interlocking anti-rotation means are provided that determine a defined angular position of the eccentric elements (4, 4') relative to each other about the axis of rotation (R). In order to improve the ease of assembly and simplify the manufacturability, the invention proposes that the anti-rotation means are designed as shaped elements of the bearing seat element (5, 5') in such a way that they engage in each other in an interlocking manner when the eccentric elements (4, 4') are in a defined angular position relative to each other.

Description

technical field [0001] The invention relates to a pump device having the features of the preamble of claim 1 , in particular for supplying a vacuum for a pneumatic brake booster. Background technique [0002] Pump devices which are used in motor vehicles for supplementary or sole vacuum supply to pneumatic brake boosters are basically known. [0003] For example, double-membrane pump arrangements are known which have an electric drive, a crankshaft linkage comprising two eccentric elements and two elastic pressure elements which can be driven via the crankshaft linkage. In order to ensure a defined time sequence of the movement of the displacement elements, the crankshaft linkage has an anti-rotational structure which prevents a relative rotation of the eccentric elements relative to each other and ensures a defined rotational angular position of the eccentric elements relative to each other. It is known that such an anti-rotational structure can be realized by two clamping...

Claims

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Application Information

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IPC IPC(8): F04B9/04F04B45/04F04B45/047
CPCF04B9/045F04B45/04F04B45/043F04B45/047F16C3/18F16C3/20B60T13/52F04B53/006F04B53/16
Inventor S·克雷布斯J·巴彻尔H·克雷L·米利希奇M·于尔根宁M·尼埃彭伯格J·冈萨雷斯K·塞茨H-M·科佩尔F·佩佐尔德R·菲灵格尔T·欧芬内尔P·维贝尔S·伊姆霍夫M·吕费尔
Owner CONTINENTAL AUTOMOTIVE TECH GMBH
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