Slide valve

Patent metadata

Field	Value
Publication number	US-9874282-B2
Application number	US-201414896536-A
Country	US
Kind code	B2
Filing date	Mar 11, 2014
Priority date	Jun 6, 2013
Publication date	Jan 23, 2018
Grant date	Jan 23, 2018

Abstract

A slide valve is described, in particular, for an automatic transmission for motor vehicles. The slide valve includes a valve slide displaceable in a sliding channel and at least two adjacent connecting channels. The sliding channel and the valve slide are configured so that the valve slide in an opened slide position establishes a fluid connection between the two adjacent connecting channels, and the valve slide in the opened slide position is guided in a section of the sliding channel between the adjacent connecting channels.

First claim

What is claimed is:

1. A slide valve, comprising:
a valve slide which is displaceable in a sliding channel and two adjacent connecting channels;
wherein the sliding channel and the valve slide are configured so that the valve slide in an opened slide position establishes a fluid connection between the two adjacent connecting channels, and
wherein the valve slide in the opened slide position is guided in a section of the sliding channel between the adjacent connecting channels;
wherein an opening section of the valve slide for the opened slide position of the valve slide has a diameter change, which is situated in the longitudinal direction of the valve slide away from a control edge of the opening section; and
wherein the diameter change of the valve slide forms a partial annular surface, which is aligned as to the longitudinal direction of the valve slide, at least one component of a normal vector of the partial annular surface being aligned essentially counter to the arrangement of an actuator for the valve slide.

2. The slide valve of claim 1 , wherein an opening section of the valve slide for the opened slide position includes a cross sectional rebound to the fluid connection in the section of the sliding channel between the adjacent connecting channels.

3. The slide valve of claim 2 , wherein the opening section of the valve slide for the opened slide position includes a guide section for guiding the valve slide in the sliding channel, and the guide section transitioning essentially continuously into a guide outer surface of an adjacent closing section of the valve slide.

4. The slide valve of claim 2 , wherein a first-cross sectional rebound in the cross section of the valve slide is spaced essentially equally far apart from a second cross-sectional rebound adjacent to the first cross-sectional rebound in the circumferential direction as it is to a third cross-sectional rebound adjacent to the first cross-sectional rebound, and/or a first guide section in the cross section of the valve slide is spaced essentially equally far apart from a second guide section adjacent to the first guide section in the circumferential direction, as it is to a third guide section adjacent to the first guide section.

5. The slide valve of claim 2 , wherein guide sections and/or cross-sectional rebounds in the cross section of the valve slide have essentially a point symmetry relative to a cross-section center point of the valve slide and/or an axial symmetry relative to a symmetry axis through the cross-section center point of the valve slide.

6. The slide valve of claim 1 , wherein one of the connecting channels transverse to a longitudinal axis of the sliding channel has a diameter larger than the cross-sectional diameter of a section of the sliding channel adjacent to the connecting channel.

7. The slide valve of claim 1 , wherein the valve slide includes a passage, which establishes a fluid connection between an operating pressure-connecting channel and a pressure chamber in a pressure buildup position of the valve slide, a pressure capable of being applied via the pressure chamber to a front surface of the valve slide facing away from an actuator for the valve slide.

8. The slide valve of claim 1 , wherein a housing of the slide valve includes a passage which establishes a fluid connection between an operating-pressure connecting channel and a pressure chamber, a pressure capable of being applied via the pressure chamber to a front surface of the valve slide facing away from an actuator for the valve slide.

9. The slide valve of claim 1 , wherein the slide valve is for an automatic transmission for a motor vehicle.

10. A slide valve, comprising:
a valve slide which is displaceable in a sliding channel and two adjacent connecting channels;
wherein the sliding channel and the valve slide are configured so that the valve slide in an opened slide position establishes a fluid connection between the two adjacent connecting channels; and
wherein the valve slide in the opened slide position is guided in a section of the sliding channel between the adjacent connecting channels;
wherein an opening section of the valve slide for the opened slide position of the valve slide has a diameter change, which is situated in the longitudinal direction of the valve slide away from a control edge of the opening section; and
wherein the diameter change of the valve slide forms a partial annular surface, which is aligned essentially transversely to the longitudinal direction of the valve slide, at least one component of a normal vector of the partial annular surface being aligned essentially counter to the arrangement of an actuator for the valve slide.

11. The slide valve of claim 10 , wherein an opening section of the valve slide for the opened slide position includes a cross sectional rebound to the fluid connection in the section of the sliding channel between the adjacent connecting channels.

12. The slide valve of claim 11 , wherein the opening section of the valve slide for the opened slide position includes a guide section for guiding the valve slide in the sliding channel, and the guide section transitioning essentially continuously into a guide outer surface of an adjacent closing section of the valve slide.

13. The slide valve of claim 11 , wherein a first-cross sectional rebound in the cross section of the valve slide is spaced essentially equally far apart from a second cross-sectional rebound adjacent to the first cross-sectional rebound in the circumferential direction as it is to a third cross-sectional rebound adjacent to the first cross-sectional rebound, and/or a first guide section in the cross section of the valve slide is spaced essentially equally far apart from a second guide section adjacent to the first guide section in the circumferential direction, as it is to a third guide section adjacent to the first guide section.

14. The slide valve of claim 11 , wherein guide sections and/or cross-sectional rebounds in the cross section of the valve slide have essentially a point symmetry relative to a cross-section center point of the valve slide and/or an axial symmetry relative to a symmetry axis through the cross-section center point of the valve slide.

15. The slide valve of claim 10 , wherein one of the connecting channels transverse to a longitudinal axis of the sliding channel has a diameter larger than the cross-sectional diameter of a section of the sliding channel adjacent to the connecting channel.

16. The slide valve of claim 10 , wherein the valve slide includes a passage, which establishes a fluid connection between an operating pressure-connecting channel and a pressure chamber in a pressure buildup position of the valve slide, a pressure capable of being applied via the pressure chamber to a front surface of the valve slide facing away from an actuator for the valve slide.

17. The slide valve of claim 10 , wherein a housing of the slide valve includes a passage which establishes a fluid connection between an operating-pressure connecting channel and a pressure chamber, a pressure capable of being applied via the pressure chamber to a front surface of the valve slide facing away from an actuator for the valve slide.

18. The slide valve of claim 10 , wherein the slide valve is for an automatic transmission for a motor vehicle.

Assignees

• Bosch Gmbh Robert

Inventors

• Wetzel Gerhard
• Escher Guenter

Classifications

• F16K11/07 Primary

  with cylindrical slides · CPC title

• F16H2061/0279

  Details of hydraulic valves, e.g. lands, ports, spools or springs · CPC title

• F16K11/0716

  with fluid passages through the valve member (F16K11/0704, F16K11/0708, F16K11/0712 take precedence) · CPC title

• F16K3/262 Primary

  with a transverse bore in the valve member · CPC title

• F16H61/0276

  Elements specially adapted for hydraulic control units, e.g. valves · CPC title