Linear drive system
AssigneeHydac International GmbH
InventorsFlorian Benjamin Krämer, Felix Anton Schwarz
Life of this patent
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Abstract
A linear drive system has an actuator (10), which can be moved in a translatory manner by an electric drive (12) and which is coupled to a mechanical energy storage (16) in the form of a spring (32). In the event of a loss of energy at the electric drive (12) or in an emergency operation, the actuator (10) travels to a predeterminable position and in so doing exerts an actuating force. One free end of the spring (32) is supported at the free end of the spindle housing (20), and the other free end of the spring (32) is supported at a closing part (36) of the actuator (10) or at the actuator (10) itself and is tensioned in every travel position of the actuator (10).
Claims8
A linear drive system, comprising:
- an actuator movable in a translatory manner by an electric drive coupled to the actuator;
- a mechanical energy storage in the form of a spring being coupled to the actuator such that, in the event of a loss of energy at the electric drive or in an emergency operation, the actuator travels to a predeterminable position and exerts an actuating force;
- a spindle drive being controlled by the electric drive and moving the actuator in a translatory manner, the spindle drive having a threaded spindle rotatably guided in a spindle housing, the threaded spindle interacting with the actuator for motion of the actuator via an adjustment nut in engagement with the threaded spindle, the adjustment nut being non-rotatably guided in the spindle housing for translatory movement;
- a cylindrical tube of the actuator being partially guided in each of travel positions thereof in the spindle housing via the adjustment nut, a free end of the cylinder tube projecting out of the spindle housing;
- and
- one free end of the spring being supported at the free end of the spindle housing and the other free end of the spring being supported on at least one of a closing part of the actuator or on the actuator and being tensioned in every travel position of the actuator.
Dependencies are inferred from the claim text.