Linear actuator and method for assembling an actuator
AssigneeSchaeffler Technologies AG & Co. KG
InventorsPatrick Daniel, Peter Heipt
Life of this patent
Estimating the term…
Abstract
Linear actuators and methods for assembling the same are disclosed. A linear actuator according to the disclosure may include a drive unit having a drive shaft and a spindle mechanism having a spindle, which can be driven by the drive shaft. A bearing unit may be provided, which may be configured to support a connecting shaft connecting the drive shaft to the spindle and has a bearing block matched to the internal cross section of the housing. The bearing unit may have a preloading device for preloading a rotary bearing inserted into the bearing block, and the spindle may be screwed to the connecting shaft via a centering portion and a screw fastening portion.
Claims14
A linear actuator comprising:
- a housing having an internal cross section;
- a drive unit having a drive shaft;
- a spindle mechanism having a spindle;
- and
- a bearing unit configured to support a connecting shaft, the bearing unit having a bearing block with an outer cross section matched to the internal cross section of the housing, the connecting shaft connecting the drive shaft to the spindle;
- wherein the bearing unit has a preloading device for axially preloading a rotary bearing inserted into the bearing block, and the spindle is screwed to the connecting shaft via a centering portion and a screw fastening portion;
- wherein the preloading device has a clamping nut, which is concentric with the connection shaft and surrounds the connecting shaft;
- wherein a locknut, which is screwed onto the spindle, subjects the bearing block to a force in an axial direction of the spindle, secures the spindle on the connecting shaft and has an outside diameter no greater than an inside diameter of the clamping nut.
A linear actuator, comprising:
- a drive unit having a drive shaft;
- a spindle mechanism having a spindle;
- and
- a bearing unit having a bearing block having an external cross section matched to an internal cross section of a housing, the bearing unit configured to support a connecting shaft, the connecting shaft connecting the drive shaft to the spindle;
- wherein the bearing unit has a preloading device including a clamping nut, the clamping nut concentric with and surrounding the connecting shaft, the preloading device configured to axially preload a rotary bearing inserted into the bearing block, and wherein the spindle is attached to the connecting shaft via a centering portion and a screw fastening portion
- wherein a locknut, which is screwed onto the spindle, subjects the bearing block to a force in an axial direction of the spindle, secures the spindle on the connecting shaft and has an outside diameter no greater than an inside diameter of the clamping nut.
Dependencies are inferred from the claim text.