Solenoid valve and driver assistance device

Patent metadata

Field	Value
Publication number	US-8925897-B2
Application number	US-201113182402-A
Country	US
Kind code	B2
Filing date	Jul 13, 2011
Priority date	Jul 14, 2010
Publication date	Jan 6, 2015
Grant date	Jan 6, 2015

Abstract

A solenoid valve includes a magnet armature, which is operatively connected to a sealing element of the solenoid valve in order to move the latter, and an armature opposing piece which is arranged at the end of the magnet armature. An intermediate element, which can be placed in supporting contact with the armature opposing piece, is mounted in an axially movable fashion in a guide recess in the magnet armature. A driver assistant device includes the above-described solenoid valve.

First claim

What is claimed is:

1. A solenoid valve, comprising:
a sealing element;
a magnet armature operatively connected to the sealing element in order to move the sealing element, the magnet armature defining a guide recess;
an armature opposing piece arranged at an end of the magnet armature and including a first end position defining a receiving recess;
an intermediate element positioned in an axially movable fashion in the guide recess of the magnet armature and extending into and in supporting contact with the receiving recess of the armature opposing piece;
wherein the magnet armature and the armature opposing element engage one in the other, at least in certain areas, wherein a plunger stage is formed; and
wherein a plunger stage recess is defined in an end surface of the magnet armature facing the armature opposing piece and a plunger stage projection extends from the first end portion of the armature opposing piece into the plunger stage recess.

2. The solenoid valve according to claim 1 , wherein the intermediate element engages the receiving recess in the armature opposing piece.

3. The solenoid valve according to claim 1 , wherein a projecting end portion of the intermediate element extending into the receiving recess has a cross section which decreases in a direction of the armature opposing piece, and said projecting end portion is conical or spherical.

4. The solenoid valve according to claim 1 , wherein:
a projecting end portion of the intermediate element extends through a through-opening defined in a second end portion of the magnet armature facing the armature opposing piece; and
the through-opening forms a radial guide for the intermediate element.

5. The solenoid valve according to claim 4 , wherein the cross section of the through-opening is small in comparison with the cross section of the guide recess.

6. The solenoid valve according to claim 1 , further comprising:
a spring element arranged in the guide recess and configured to support the intermediate element on a side of the intermediate element facing away from the armature opposing piece.

7. A driver assistant device comprising:
a sealing element;
at least one solenoid valve including (i) a magnet armature operatively connected to the sealing element in order to move the sealing element, (ii) an armature opposing piece arranged at an end of the magnet armature and having a first end portion defining a receiving recess, and (iii) an intermediate element positioned in an axially movable fashion in a guide recess of the magnet armature and extending into and in supporting contact with the receiving recess of the armature opposing piece;
wherein the magnet armature and the armature opposing element engage one in the other, at least in certain areas, wherein a plunger stage is formed; and
wherein a plunger stage recess is defined in an end surface of the magnet armature facing the armature opposing piece and a plunger stage projection extends from the first end portion of the armature opposing piece into the plunger stage recess.

8. The drive assistant device according to claim 7 , wherein the driver assistant device is one of an antilock braking system, a traction control system, and an electronic stability program device.

9. The solenoid valve according to claim 2 , wherein a projecting end portion of the intermediate element fits in a complementary manner into the receiving recess of the armature opposing piece.

Assignees

• Alaze Norbert
• Bosch Gmbh Robert

Inventors

• Alaze Norbert

Classifications

• F16K31/0648

  the armature and the valve member forming one element (F16K31/0651 takes precedence) · CPC title

• B60T8/363

  in hydraulic systems (B60T8/3655, B60T8/3675 and B60T8/369 take precedence) · CPC title

• F16K31/0689

  Braking of the valve element · CPC title

• H01F7/127 Primary

  Assembling · CPC title