Brake cylinder
A brake cylinder for an air-operated brake, in particular for commercial vehicles, has a housing including a front cover ( 11 ), wherein the front cover ( 11 ) is provided with a cylindrical lateral surface ( 16 ) and with a base wall ( 18 ) adjoining the lateral surface ( 16 ). The base wall ( 18 ) is provided with an elevated portion ( 19 ) having a central bore or middle opening ( 23 ) for a cylinder plunger. The front cover ( 11 ) is provided with a rib ( 46 ). The rib ( 46 ) extends on the base wall ( 18 ) in addition to the elevated portion ( 19 ).
1. A brake cylinder for an air-operated brake, comprising a housing including a front cover ( 11 ) having a generally cylindrical lateral surface ( 16 ) and a base wall ( 18 ) adjoining the lateral surface ( 16 ), the base wall ( 18 ) having an elevated portion ( 19 ) extending diametrically across the base wall with a central bore or middle opening ( 23 ) for a cylinder plunger extending in an axial direction and two outer openings ( 21 , 22 ) on opposite sides of the central bore or middle opening ( 23 ), the two outer openings ( 21 , 22 ) extending parallel to the axial direction, wherein no more than one rib ( 46 ) is formed on the front cover ( 11 ), the rib ( 46 ) extending on the base wall ( 18 ) in addition to the elevated portion ( 19 ), wherein the elevated portion and the rib are hollow structures that are open on one side of the base wall.
2. The brake cylinder according to claim 1 , wherein the rib ( 46 ) extends from the elevated portion ( 19 ) toward a circumferential edge ( 17 ) between the base wall ( 18 ) and the lateral surface ( 16 ).
3. The brake cylinder according to claim 1 , wherein the rib ( 46 ) extends from the elevated portion ( 19 ) in a radial direction.
4. The brake cylinder according to claim 1 , wherein the rib ( 46 ) is formed only on one side of the elevated portion ( 19 ), wherein the rib ( 46 ) extends in a radial direction and ends at an edge of the lateral surface ( 16 ) proximate the base wall or at a circumferential edge ( 17 ) between the base wall ( 18 ) and the lateral surface ( 16 ), such that the rib and the elevated portion have only one axis of symmetry that extends along the rib.
5. The brake cylinder according to claim 1 , wherein the rib ( 46 ) has a width smaller than the elevated portion ( 19 ).
6. A pneumatically actuatable disc brake comprising a brake cylinder according to claim 1 , with a respective threaded stud or bushing extending through each of the two outer openings ( 21 , 22 ), wherein the front cover is formed by deep-drawing or thermoforming.
7. The brake cylinder according to claim 1 , wherein the rib ( 46 ) extends from the elevated portion and tapers down to the base wall ( 18 ).
8. The brake cylinder according to claim 7 , wherein the rib ( 46 ) tapers down to an intersection between the base wall ( 18 ) and the lateral surface ( 16 ).