Slide valve, in particular for controlling a motor vehicle automatic transmission

Patent metadata

Field	Value
Publication number	US-9869399-B2
Application number	US-201514724309-A
Country	US
Kind code	B2
Filing date	May 28, 2015
Priority date	Jun 4, 2014
Publication date	Jan 16, 2018
Grant date	Jan 16, 2018

Abstract

A slide valve, in particular for controlling a motor vehicle automatic transmission, has a housing which includes an axial end section. A connector sleeve is situated on the axial end section of the housing, the connector sleeve having a larger diameter in a first axial area adjacent to the housing and a smaller diameter in a second axial area remote from the housing, a filter device being situated in the first axial area. The second axial area includes a hydraulic connection.

First claim

What is claimed is:

1. A slide valve for controlling a vehicle transmission, comprising:
a housing having an axial end section;
a sliding sleeve mounted in and circumferentially surrounded by the housing;
a valve slide axially movably mounted inside the sliding sleeve;
a connector sleeve mounted on the axial end section of the housing in a fluid-tight manner, wherein the connector sleeve has a first inner diameter in a first axial area adjacent to the housing and a second inner diameter in a second axial area remote from the housing, the second inner diameter being smaller than the first inner diameter, and wherein a filter device is held within the first axial area, and the connector sleeve further includes a hydraulic connector remote from the housing, the hydraulic connector having an outside seal, the hydraulic connector having a third inner diameter smaller than the second inner diameter.

2. The slide valve of claim 1 , wherein the filter device is held between an inner wall section of the connector sleeve and the axial end section of the housing, the first inner diameter merging into the second inner diameter via the inner wall section.

3. The slide valve of claim 1 , wherein the filter device is pressed into the connector sleeve.

4. The slide valve of claim 1 , wherein the filter device is held between the axial end section of the housing and the wall section of the connector sleeve between the first and second axial area.

5. The slide valve of claim 1 , wherein inside the connector sleeve, the connector sleeve transitions from the first inner diameter to the second inner diameter via a rounded step.

6. The slide valve of claim 1 , wherein the filter device includes a circular disk, the circular disk having a radially outer annular holding section and a radially inner filter section, wherein the circular disk is held, in its entirety, in the first axial area.

7. The slide valve of claim 6 , wherein the filter device has an annular filter section radially outside the circular disk and a supporting section in the shape of a hat radially inside the circular disk, the supporting section supporting a valve spring of the slide valve.

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

9. The slide valve of claim 1 , wherein the axial end section circumferentially surrounds an end section of the sliding sleeve.

10. The slide valve of claim 2 , wherein the filter device is held between the inner wall section of the connector sleeve and an end face of the axial end section of the housing.

11. The slide valve of claim 1 , wherein the sliding sleeve has a plurality of openings, and the valve slide has a plurality of control edges that interact hydraulically with the openings.

12. The slide valve of claim 5 , wherein inside the connector sleeve, the connector sleeve transitions from the second inner diameter to the third inner diameter via a rounded step.

13. The slide valve of claim 1 , wherein the second axial area is between the first axial area and the hydraulic connector.

Assignees

• Bosch Gmbh Robert

Inventors

• Schudt Klaus
• Mueller Erwin

Classifications

• F16H2061/0253

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

• F16K11/0708 Primary

  comprising means to avoid jamming of the slide or means to modify the flow · CPC title

• B01D29/0095

  Flat filtering elements (B01D25/12, B01D25/26 take precedence) · CPC title

• F16K31/0613

  with cylindrical slides · CPC title

• F16H61/0251

  Elements specially adapted for electric control units, e.g. valves for converting electrical signals to fluid signals · CPC title