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Electromagnetically actuated valve

A solenoid valve and valve body technology, which is applied in the field of solenoid valves, can solve the problems of increasing working noise of air and difficulty in removing air, and achieve the effect of effectively removing air.

Inactive Publication Date: 2007-09-05
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the air present in the valve housing is difficult to remove
The air in the valve increases its working noise

Method used

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  • Electromagnetically actuated valve
  • Electromagnetically actuated valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] The electromagnetic valve 10 that is used for automobile hydraulic braking system shown in Fig. 1 is mainly made of two assemblies: a hydraulic component 13 that is fixed in a stepped hole 11 of valve unit 12 and an electric component that is placed on this hydraulic component 14.

[0010] The hydraulic component 13 has a valve body 16 with a through longitudinal bore 17 . On the side of the electrical component 14 , a valve housing 18 is fastened to the valve body 16 . An armature 19 is housed in the valve housing 18 , displaceable longitudinally and having a longitudinal groove 20 .

[0011] A valve seat part 22 with a circumferentially arranged sealing ring 23 is accommodated in the stepped bore 11 of the valve unit 12 . The sealing ring separates an inlet opening 24 from an outlet opening 25 of the valve unit 12 . On the side of the inflow opening 24 there is a filter disk 26 in the stepped opening 11 . The valve seat part 22 with a longitudinal bore 27 is conne...

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Abstract

A valve (10) has a valve body (16) with a longitudinal bore (17), a valve dome (18) connected to the valve body (16), an armature (19) received longitudinally movably in the valve dome (18), and a tappet (36) for transmitting an armature motion to a closing member (40) of a seat valve (41). The tappet (36) is guided with slight radial play over the entire length of the longitudinal bore (17) of the valve body (16) and is provided on its jacket side with at least two separate conduits (37). A valve chamber (31) of the valve (10) that contains the seat valve (41) communicates fluidically with the valve dome (18) through the conduits (37). Residual air in the valve dome (18) can be positively displaced through the conduits (37). The valve (10) can be used in hydraulic brake systems of motor vehicles.

Description

technical field [0001] The present invention relates to solenoid valves. Background technique [0002] A valve is known (DE 44 45 221 A1) in which the tappet has three longitudinal flattened portions on the outside for the introduction of fluid into the valve housing in order to produce a hydraulic pressure action on the armature of the valve. Because the tappet is guided in the valve housing with a small radial play in the longitudinal hole of the valve body, but this radial play becomes larger and larger in the direction of the valve housing, and the cross-section of the channel created by the flattened part of the tappet significantly reduced, so that the liquid splits of the three channels merge in the longitudinal bore of the valve body. Therefore, it is difficult to remove the air present in the valve housing. The air in the valve increases its working noise. Contents of the invention [0003] The object of the present invention is to provide a solenoid valve whic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T13/68B60T8/36F16K31/06B60T8/34B60T15/02B60T17/22
CPCB60T8/363B60T8/367B60T15/028B60T8/34B60T17/222B60T8/36
Inventor H·施密特M·阿姆布罗斯
Owner ROBERT BOSCH GMBH
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