| 摘要 |
The invention relates to a device for actuating a control valve, which can be designed as a slide, ball valve, rotary slide, disk valve or the like and which is used to control pressurized media by open or closed loop, for example to control the coolant volume flow of an internal combustion engine. The aim of the invention, inter alia, is to develop a device for actuating a control valve which allows very sensitive, smooth control with high control performance and nearly uniform control quality during opening and closing, at the same time additionally ensures a "fail-safe" function and is characterized by a very compact, cost-effective and robust design which is simple in terms of manufacturing and assembly. The device according to the invention for actuating a control valve is characterized, inter alia, in that, in a piston guide (12) which is rigidly arranged on the flow housing (2), a push piston (13) having an actuating joint (17) is fastened to the flow housing (2) in a linearly movable manner, and a connecting rod (18) is arranged in the actuating joint (17), wherein a push joint (19) is arranged at the end of the push piston (13) located opposite the actuating joint (17), in which push joint the actuating element (6) of a control valve (1) is movably and/or rotatably arranged, wherein a restoring spring (20) is arranged adjacent to the push joint (19), wherein said spring acts in the direction of the longitudinal axis of the push piston (13) on said piston such that the push piston (13) is always seated with zero backlash with the actuating joint (17) against the connecting rod. |
