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Solenoid valve closed when de-energized

A technology for solenoid valves and valve sleeves, applied in the field of solenoid valves, which can solve the problems of deterioration of the adjustability of solenoid valve 1 and increasing the direction of magnetic force, etc.

Active Publication Date: 2019-06-11
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The increased magnetic force profile impairs the permanent adjustability of the solenoid valve 1

Method used

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  • Solenoid valve closed when de-energized
  • Solenoid valve closed when de-energized
  • Solenoid valve closed when de-energized

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] figure 1 A schematic sectional view of a prior art solenoid valve 1 for a hydraulic system of a vehicle is shown. A description of such a solenoid valve can be found in the description of the prior art 1 .

[0042] figure 2 A part of a sectional view of an exemplary embodiment of a solenoid valve 1 with a mechanism 11 for hydraulic damping is shown. A specially designed spring washer 12 is used as mechanism 11 . In the illustrated embodiment three spring washers 12 are used. Here, the spring washer 12 , ie the mechanism 11 is positioned directly on the armature 3 . In the radially outer region, the armature 3 has an armature groove 13 that is continuous over the entire length of the armature 3 . In the embodiment shown, two armature slots 13 are formed. The armature 3 also has an armature step 14 in the outer region, on which the mechanism 11 bears directly. Due to the armature step 14 a radially internal cavity is formed between the mechanism 11 and the armatur...

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PUM

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Abstract

PROBLEM TO BE SOLVED: To prevent a valve opening click sound occurring in a case where an armature collides with a polar core in electrification.SOLUTION: In a valve closing type solenoid valve 1 with no current, a polar core 2 is fixed and arranged, an armature 3 includes a valve sleeve 5 arranged so as to be displaceable in an axial direction, and in order to eliminate a valve closing element cooperating with the armature 3 into a valve seat, a compression spring 4 acts between the polar core 2 and the armature 3. The valve 1 is characterized in that between the polar core 2 and the armature 3, is formed means 11 of hydraulically buffering displacement of the armature 3.SELECTED DRAWING: Figure 2

Description

technical field [0001] The invention relates to a solenoid valve with de-energized closing, which has a valve housing in which a pole core (Polkern) is fixedly arranged, and an armature with a valve tip is arranged axially displaceable in the valve housing. , where a helical spring acts between the pole core and the armature to press the valve tip into the valve seat. Background technique [0002] Solenoid valves of the type mentioned at the outset are known from the prior art. This type of electromagnetic valve is for example the electromagnetic valve MV09OS of the 2014 TTNr of Bosch Company. figure 1 shown in . The solenoid valve 1 comprises a solenoid actuator comprising an energizable field coil (not shown) and a pole core 2 and acts on an armature 3 which is axially displaceable in valve housings 5 ​​, 6 . The valve sleeves 5 , 6 can be designed as two-part valve sleeves with an upper valve sleeve 5 and a lower valve sleeve 6 . The valve sleeve 5 is positioned in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K31/06
CPCF16K31/0675F16K31/0662F16K31/0696H01F7/088H01F7/1607
Inventor M·安布罗西E·库尔兹N·阿拉策M·艾森劳尔
Owner ROBERT BOSCH GMBH
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