Actuator

Abstract

In a fluid cylinder ( 1 ), the piston ( 2 ) and the piston rod ( 3 ) can be displaced axially by a fluid. Means ( 5, 7 ) are located on the fluid cylinder ( 1 ) which convert the axial motion of the piston ( 2 ) and the piston rod ( 3 ) to a rotational motion.

1 . A fluid cylinder, comprising: 
 a piston and a piston rod, wherein: 
 the piston and the piston rod interact, and the piston and the piston rod can be displaced axially by fluid, and  
 the fluid cylinder is structured in order to convert an axial motion of the piston and the piston rod to a rotational motion.  
   
   
   
       2 . The fluid cylinder according to  claim 1 , further comprising: 
 a spindle and a rotatable device connected to the spindle for converting the axial motion of the piston to a rotational motion.    
   
   
       3 . The fluid cylinder according to  claim 2 , wherein 
 the spindle is located within a rod hole of the piston rod, the spindle is axially supported within a housing of the fluid cylinder, and the spindle rotates when the piston moves axially.    
   
   
       4 . The fluid cylinder according to  claim 1 , wherein 
 the fluid cylinder is structured such that at least one of a locking of the piston in at least one travel direction is able to be effected, passage of fluid into an interior of the fluid cylinder is able to be controlled, a position of the piston is able to be measured or limited, and at least one additional component is able to be connected.    
   
   
       5 . The fluid cylinder according to  claim 4 , further comprising: 
 at least one of a pawl-type shape, a form-locking surface, or a frictionally engaging surface that is axially or radially lockable against a spring-loaded or hydraulic piston.    
   
   
       6 . The fluid cylinder according to  claim 4 , further comprising: 
 a cam-disk or a second shaft for controlling the passage of fluid into the interior of the fluid cylinder.    
   
   
       7 . The fluid cylinder according to  claim 4 , further comprising: 
 sensors for measuring the position of the piston.    
   
   
       8 . The fluid cylinder according to  claim 4 , further comprising: 
 a gear train with at least one shaft for connecting an additional component.    
   
   
       9 . The fluid cylinder according to  claim 1 , wherein 
 the piston is able to be blocked by an element actuatable outside the fluid cylinder.