| 摘要 |
The invention relates to a metering device for lubricant having a lubricant reservoir ( 1 ), a piston ( 3 ), which is arranged on a threaded spindle ( 2 ), within the lubricant reservoir and a drive head 4 , which has a drive shaft ( 7 ) connected to the threaded spindle ( 2 ) and an electromechanical drive ( 5 ) for actuating the drive shaft. The drive shaft ( 7 ) contains a lubricant passage duct ( 8 ) which opens into the lubricant storage space of the lubricant reservoir. A ram ( 9 ) is inserted into the lubricant passage duct ( 8 ) of the drive shaft, said ram having an axial bore ( 10 ) with a nonreturn valve ( 11 ) on the inlet side, and also a ram head ( 13 ) which is arranged in a rotationally fixed manner and is loaded by a compression spring ( 12 ). The ram head ( 13 ) bears under the effect of the compression spring ( 12 ) against a control surface ( 14 ) of the drive shaft ( 7 ). The control surface ( 14 ) and the associated contact surface of the ram head ( 13 ) are designed as slotted-guide surfaces which, when the control surface ( 14 ) rotates, bring about stroke movements of the ram ( 9 ), said movements conveying lubricant through the bore ( 10 ) in the ram ( 9 ) to a lubricant outlet at the end of the ram. |
