| 摘要 |
The invention relates to a combined service brake cylinder and spring brake cylinder (1) for brake systems of vehicles, comprising a service brake membrane (25, 27), which is arranged in the service brake cylinder (3) and can be actuated by a pressure medium and is operatively connected to a service brake piston rod (29) that protrudes from the service brake cylinder (3) and acts on brake actuation elements, a spring brake piston (9), which is arranged in the spring brake cylinder (5) and can be actuated by an accumulator spring (11) and is bounded on one side by a pressure chamber (15) and on the opposite side by a spring chamber (17) that accommodates the accumulator spring (11), wherein the accumulator spring (11) is supported on the spring brake piston (9) at one end and on the bottom (13) of the spring brake cylinder (5) at the other end, an intermediate wall (7) between the service brake cylinder (3) and the spring brake cylinder (5), through which intermediate wall a spring brake piston rod (19) connected to the spring brake piston (9) extends, a bayonet coupling (33) between the spring brake cylinder (5) and the intermediate wall (7), which bayonet coupling has locking segments (37) protruding radially outward on an end-side edge (35) of the wall (31) of the spring brake cylinder (5) and recess segments (39) formed radially inward and recess segments (45) corresponding thereto that are formed radially outward and formed on a ring chamber (43) connected to the intermediate wall (7) and locking segments (47) protruding radially inward into the ring chamber (43), a bottom-side stop surface (49) in the ring chamber (43) as an axial stop for the end-side edge (35) of the wall (31) of the spring brake cylinder (5), and a ring seal (55) arranged between the circumferential surface (51) of the edge (35) of the wall (31) of the spring brake cylinder (5) pointing radially inward and the circumferential surface (53) of the ring chamber (43) pointing radially outward. According to the invention, a recess (61) is provided in the bottom (59) of the ring chamber (43) for accommodating at least one end section (65) of the ring seal (43), and end-face contact surfaces (50) are provided on the locking segments (37) of the spring brake cylinder (5) for stopping on the bottom-side stop surface (49) in the ring chamber (43), wherein at least the end section (65) of the ring seal (55) is clamped between the recess (61) in the bottom (59) of the ring chamber (43) and the edge (35) of the wall (31) of the spring brake cylinder (5). |
