DE102007018968B4 - Arrangement of a plate spring in a piston of a switching element - Google Patents

Abstract

Arrangement of a plate spring (2) in a piston (1) of a switching element (3), characterized in that the outer diameter (7) of the plate spring (2), which is designed as a closed ring on the piston (1) of the switching element (3) rests that the fingers of the plate spring (2) protrude through crowns (5) in the housing and abut a round wire snap ring (4), wherein the fingers of the plate spring (2) from the inside with the Runddrahtsprengring (4) are mounted and that the piston fingers ( 6) for actuating the switching element (3) between the fingers of the plate spring (2) pass through.

Description

The present invention relates to the arrangement of a plate spring in a piston of a switching element according to the preamble of patent claim 1.

From the DE 21 24 008 A is a holder for one or more acting on an axially displaceable component acting springs, in particular for the acting on a pressurizable means of pressure piston ring piston of a friction clutch or brake return springs known. Here, a one- or multi-part, in cross-section double-angle trained support member is provided to support the spring, which is inserted with a leg in a recess of a groove of a stationary component and on the other leg, the spring rests directly or via intermediate links.

From the prior art is also known to arrange the diaphragm spring with their internal fingers directly on the piston of a switching element. This creates the disadvantage that the arrangement of the fingers of the disc spring can lead to high wear of the piston.

The present invention is therefore based on the object to provide an arrangement of a plate spring in a piston of a switching element, by which wear of the piston is avoided in a simple manner. Since due to the design very little space is available, the arrangement of the disc spring according to the invention should ensure a space-saving arrangement of the piston, the piston finger, the plate spring and the snap ring.

This object is solved by the features of patent claim 1. Further embodiments and advantages of the invention will become apparent from the dependent claims.

Accordingly, it is proposed to arrange the disc spring inverted relative to prior art arrangements; According to the invention, the fingers of the disc spring abut against a round wire snap ring, wherein the outer diameter of the plate spring, which is designed as a closed ring, rests against the piston of the switching element.

Due to the conception according to the invention, the pressure is reduced, which results in less wear of the piston of the switching element.

According to the invention, the fingers of the diaphragm spring protrude through crowns in the housing and are stored from the inside with the round wire snap ring. The round snap ring creates an optimal rolling geometry for the actuation of the switching element and thus for moving the diaphragm spring. Furthermore, it is provided that the piston fingers engage for actuation of the switching element between the fingers of the disc spring, which leads to an extremely compact design in an advantageous manner.

The invention will be explained in more detail by way of example with reference to the attached FIGURE, which is a schematic sectional view for illustrating the storage according to the invention. The sectional planes of the left and right parts of the figure are offset by an angle to each other.

In the attached figure is the piston of the switching element 3 With 1 and the diaphragm spring with 2 designated. According to the invention, the plate spring 2 of the switching element arranged such that the fingers of the plate spring 2 on a round wire snap ring 4 issue; the outside diameter 7 the plate spring 2 , which is designed as a closed ring, is located on the piston 1 at. As can be seen from the figure, the fingers of the diaphragm spring protrude 2 through crowns 5 in the case and from the inside with the round wire snap ring 4 stored. To actuate the switching element engage the piston fingers 6 between the fingers of the diaphragm spring 2 therethrough.

The invention provides an arrangement of the plate spring of a switching element is provided, which takes up little space and results in a low wear for the piston.

LIST OF REFERENCE NUMBERS

1

piston

2

Belleville spring

3

switching element

4

Round wire snap ring

5

Crown

6

piston fingers

7

Outer diameter of the diaphragm spring

Claims (1)

Arrangement of a plate spring ( 2 ) in a piston ( 1 ) of a switching element ( 3 ), characterized in that the outer diameter ( 7 ) the diaphragm spring ( 2 ), which is designed as a closed ring, on the piston ( 1 ) of the switching element ( 3 ) is applied, that the fingers of the plate spring ( 2 ) by crowns ( 5 ) in the housing and on a round wire snap ring ( 4 ), wherein the fingers of the diaphragm spring ( 2 ) from the inside with the round wire snap ring ( 4 ) and that the piston fingers ( 6 ) for actuating the Switching element ( 3 ) between the fingers of the diaphragm spring ( 2 ).

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