Connection arrangement of a piston rod

Abstract

The invention relates to an actuating device for mechanical connection to a piston of a working cylinder, comprising a piston rod (12), which has a piston-rod base (14) at one end, a stop ring (16) for the piston-rod base (14), which stop ring accommodates the piston rod (12) in the interior of the stop ring with play, wherein the piston-rod base can pass through the stop ring (16) in at least one angular position of the piston rod (12) in relation to the stop ring, and a retaining device (24) to prevent such passing through, which retaining device has a main body (28) and a clip device. The clip device has at least one clip element (36, 38) comprising a spring arm (40, 42), which is fastened to the main body (26) and reaches through the interior of the stop ring (16) parallel to the piston rod, and comprising a latching projection (44, 46), which is arranged on the spring arm, wherein the remaining play S of the assembly of the piston rod and the at least one spring arm in the interior of the stop ring, with the piston-rod base lying against the stop ring or the clip element and being in the angular position permitting the passing through, is less than the rearward-engagement length L of the at least one latching projection.

Description

technical field [0001] The invention relates to an operating device for mechanical attachment to a piston of a working cylinder, in particular a master cylinder, of a hydraulic brake or clutch device. The operating device comprises a piston rod with a piston rod foot on the end; a stop ring for the piston rod foot, which receives the piston rod with play in the interior of the stop ring, wherein the stop The ring can be penetrated by the piston rod foot in at least one angular position of the piston rod relative to the stop ring; The device enables the anti-dropping device to be fastened releasably on the stop ring. The actuating device is thus a subassembly for the corresponding working cylinder. [0002] Furthermore, the invention relates to a corresponding working cylinder of a hydraulic brake or clutch device, said working cylinder having a cylinder housing, a piston mounted displaceably in the cylinder housing, and a corresponding working cylinder for mechanically attac...

AI Technical Summary

Problems solved by technology

However, due to the force exerted by the preloaded spring inside the master cylinder on the clamping connection via the piston rod, there is the danger that the locking element of the clamping connection separates from the stop ring

If the piston rod simultaneously deviates from the longitudinal axis of the master cylinder due to its pivotability, this can cause the entire anti-dropping device to loosen from the stop ring and thus cause the piston rod to drop out.

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