DE102009000780A1 - Connector for connecting e.g. hydraulic valve and actuator used in automatic gear box of motor vehicle, is formed between valve and actuator actuating valve, where valve piston has retainer for receiving parts of actuator pin - Google Patents

Abstract

The connector is formed between a valve (1) and an actuator actuating the valve. A valve piston (3) has a cylindrical retainer (5) at a side facing towards a cylindrical actuator pin (4) for receiving parts of the actuator pin. The connector between the valve and the actuator is adjusted by changing diameters of the valve piston and the actuator pin. The actuator pin has a bar with a defined opening, where the bar is arranged adjacent to an inner wall of the retainer. A sealing element e.g. O-ring or piston ring, is formed for the retainer and the actuator pin.

Description

The The present invention relates to the coupling between a Valve and the actuator for actuating the valve according to the Preamble of claim 1.

hydraulic and pneumatic valves are usually powered by an actuator operated against the force of a return spring, wherein the pin of the actuator on an end face of the valve housing slidably arranged Ventilkobens and rests in the desired Working position slides. Disadvantageously can at this type of operative connection between the valve and the actuator dynamic processes, such as vibrations, in one Decoupling of actuator and piston result, causing the function of the valve is disturbed.

From the DE 196 06 318 C2 the applicant is a pressure regulator for electro-hydraulic transmission controls, in particular for automatic transmission in motor vehicles and construction machines known, which is designed as a seat pressure regulator with a magnetic coil and a core which surrounds an axially displaceable by the force of a magnetic field in an armature space anchor, wherein the anchor by means of a stored front and a rear storage.

Of the known pressure regulator has a plunger, the at one end with an end face of the anchor in the region of Front bearing is connected or loosely adjacent to this and at its other end in a closing part for an oil flow well is stored and by a ram guide is guided. Here, the anchor space of the anchor in divided two damping volumes; between an adjusting device and the rear bearing of the anchor is on its the pestle opposite side formed an oil-filled damping chamber, wherein the closing part has a larger diameter as the ram has and between the front Storage of the armature and the ram guide formed with an oil-filled damping chamber which is via a relief hole with the anchor space connected is.

Due to the design of the pressure regulator according to the DE 196 06 318 C2 should be created an effective damping of the armature against the pulsations of the transmission.

Of the present invention, the object is a coupling between a valve and the actuator for actuating the Valve specify by the vibrations between valve and actuator be largely avoided.

These The object is solved by the features of claim 1. Further embodiments and advantages of the invention are apparent from the dependent claims.

Therefore It is proposed that the valve piston at the actuator pin facing side a preferably cylindrical receptacle for a Having part of the preferably cylindrical actuator pin, wherein the longitudinal axis of the receptacle is preferably coaxial to the longitudinal axis of the valve piston.

By the achievable in this way immersion of Aktuatorpins in the Valve piston, a coupling is achieved, the principle of operation a shock absorber is similar. On the one hand There is no strong coupling between the actuator pin and the valve piston and on the other hand, vibrations between these components largely become prevented.

According to the Invention, the coupling between the actuator pin and the valve piston by Variation of the joining geometry or the diameter or the dimensioning of the recording and / or the actuator pin stiffer or softened, so depending on from the execution of a fixed coupling to easy connection of both Components with damping can be achieved.

in the As part of a development of the invention can be provided that the Aktuatorpin a circumferential, adjacent to the inner wall of the recording Has web with a defined opening, wherein the Coupling between the valve and the actuator or the damping adjustable by varying the dimensioning of the opening is. In the case of a cylindrical receptacle and a cylindrical actuator pins corresponds to the outer diameter of the trained in this case as a ring land circumferential ridge approximately the inner diameter of the cylindrical receptacle.

According to one particularly advantageous embodiment of the invention an external tensioning sealing element is provided, which in a circumferential groove of the Aktuatorpins can be arranged and against the inner wall of the receptacle seals. The sealing element can become move radially freely, making it in an advantageous manner is not required, the actuator pin to the valve or for receiving to center with high quality.

By the combination of sealing by means of the sealing element with a defined overflow cross section, the Damping or the coupling between the valve and the Actuator can be freely selected. To achieve the overflow cross section For example, the actuator pin and / or the receptacle may be correspondingly be edited or dimensioned.

The Invention will be described below with reference to the accompanying figures exemplified in more detail. Show it:

1 : A schematic view of the arrangement of the actuator pin in a valve according to the prior art;

2 : A schematic view of the coupling between a valve and the actuator for actuating the valve according to a first embodiment of the invention;

3 FIG. 2 is a schematic sectional view of the coupling between a valve and the actuator for actuating the valve and a schematic plan view of the actuator pin according to a second embodiment of the invention; FIG. and

4 : A schematic view of the coupling between a valve and the actuator for actuating the valve according to another embodiment of the invention.

In 1 is a valve 1 shown, whose housing with 2 is designated. According to the state of the art is the pin 4 of the actuator for actuating the valve 1 on one end face of the valve housing 2 slidably arranged Ventilkobens 3 on, allowing an axial displacement of the pins 4 against the force of a return spring, not shown, in a displacement of the valve piston 3 results. As already explained, in such a system executed dynamic processes, such as vibrations, resulting in an undesirable decoupling of actuator and piston.

To get vibrations between the valve 1 and the actuator or the actuator pin 4 is largely avoided according to the invention and with reference to 2 proposed the valve piston 3 be carried out such that at the the Aktuatorpin 4 facing side a cylindrical receptacle 5 for a part of the cylindrical actuator pin 4 comprising the valve-facing end of the actuator pin 4 , is provided, wherein the longitudinal axis of the receptacle 5 preferably coaxial with the longitudinal axis of the valve piston 3 is.

By the present invention enabled immersion of Aktuatorpins 4 in the valve piston 3 becomes a coupling between the valve piston 3 and the actuator or the actuator pin 4 achieved, which is similar to the principle of operation of a shock absorber, wherein vibrations between these components are largely prevented.

Here, the coupling between the Aktuatorpin 4 and the valve piston 3 by varying the joining geometry or the diameter of the recording 5 and / or the actuator pin 4 (ie the Überströmquerschnitts) are arbitrarily stiff or soft.

According to an advantageous embodiment of the invention, the subject of the 3 is, the actuator pin points 4 a ring pier 6 whose outer diameter is the inner diameter of the cylindrical receptacle 5 equivalent. Here, the ring land 6 an opening or a recess 7 on, by dimensioning the damping between the valve piston 3 and the actuator pin 4 is adjustable. In the right part of the 3 For a better understanding of the invention, a top view of the actuator pin is shown 4 shown. The ring bridge 6 can with the actuator pin 4 be integrally formed or connected as a separate component with this.

In the context of a further embodiment of the invention, which in 4 is shown is an external tensioning sealing element 8th provided in an annular groove 9 of the actuator pin 4 can be arranged and against the inner wall of the recording 5 seals. Here is the sealing element 8th , which may be designed as an O-ring or piston ring, viewed radially outwardly biased and can move radially inward move freely, thereby centering the Aktuatorpins 4 to the valve 1 or for recording 5 with high quality is not required. Further, between the actuator pin 4 and the recording 5 provided an overflow cross section, so that the damping or the coupling between the valve 1 and the actuator pin 4 can be freely selected by a combination of sealing with a selectively selected overflow cross section.

1

Valve

2

valve housing

3

plunger

4

Aktuatorpin

5

admission

6

ring land

7

opening

8th

sealing element

9

ring groove

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 19606318 C2 [0003, 0005]

Claims (7)

Coupling between a valve ( 1 ) and the actuator for actuating the valve ( 1 ), characterized in that the valve piston ( 3 ) on whose the actuator pin ( 4 ) facing side a receptacle ( 5 ) for a part of the actuator pin ( 4 ) having. Coupling between a valve ( 1 ) and the actuator for actuating the valve ( 1 ), according to claim 1, characterized in that the receptacle ( 5 ) is cylindrical, wherein the actuator pin ( 4 ) is cylindrical. Coupling between a valve ( 1 ) and the actuator for actuating the valve ( 1 ), according to claim 1 or 2, characterized in that the coupling between the actuator pin ( 4 ) and the valve piston ( 3 ) by varying the joining geometry or the diameter of the receptacle ( 5 ) and / or the actuator pin ( 4 ) is arbitrarily stiff or soft adjustable. Coupling between a valve ( 1 ) and the actuator for actuating the valve ( 1 ), according to claim 1, 2 or 3, characterized in that the actuator pin ( 4 ) a circumferential, on the inner wall of the receptacle ( 5 ) adjacent footbridge ( 6 ) with a defined opening ( 7 ), wherein the coupling between the valve ( 1 ) and the actuator or the damping by varying the dimensioning of the opening ( 7 ) is adjustable. Coupling between a valve ( 1 ) and the actuator for actuating the valve ( 1 ), according to claim 4, characterized in that in the case of a cylindrical receptacle ( 5 ) and a cylindrical actuator pin ( 4 ), the outer diameter of the ring web formed as a circumferential web ( 6 ) the inner diameter of the cylindrical receptacle ( 5 ) corresponds. Coupling between a valve ( 1 ) and the actuator for actuating the valve ( 1 ), according to claim 2 or 3, characterized in that a sealing element ( 8th ) provided in a circumferential groove ( 9 ) and against the inner wall of the receptacle ( 5 ), wherein the sealing element ( 8th ) is freely movable radially and wherein between the actuator pin ( 4 ) and the recording ( 5 ) an overflow cross-section is provided so that the damping or the coupling between the valve ( 1 ) and the actuator pin ( 4 ) can be freely selected by a combination of the seal with a selectively selected overflow cross section. Coupling between a valve ( 1 ) and the actuator for actuating the valve ( 1 ), according to claim 6, characterized in that in the case of a cylindrical receptacle ( 5 ) and a cylindrical actuator pin ( 4 ) the sealing element ( 8th ) is designed as an O-ring or piston ring, wherein the circumferential groove ( 9 ) is designed as an annular groove.