Master brake cylinder with integrated transport lock

Master cylinder for a vehicle hydraulic brake system, comprising a housing with a bore formed therein, which is open at one end and in which a first pressure piston and a second pressure piston are guided sealingly and displaceably along an axis;

• and
• a restrained first restoring spring acting counter to an actuating direction upon the first pressure piston, and a second restoring spring X acting counter to the actuating direction upon the second pressure piston;
• wherein, for restraining the second restoring spring, each end of the second restoring spring is supported against a tensioning plate and the two tensioning plates are connected to one another in a tension-resistant manner by means of a cable extending through the second restoring spring.

Master cylinder for a vehicle hydraulic brake system, comprising a housing with a bore formed therein, which is open at one end and in which a first pressure piston and a second pressure piston are guided sealingly and displaceably along an axis;

• a restrained first restoring spring acting counter to an actuating direction X upon the first pressure piston, and a second restoring spring acting counter to the actuating direction upon the second pressure piston;
• wherein the first pressure piston protrudes from the bore and an end of the first pressure piston that protrudes from the bore is supported counter to the actuating direction against rolled bellows, which are fastened to the housing of the master cylinder.