Actuator
First Claim
1. An actuator for providing a linear force to a driven means,characterized in that it includes:
- a drive means (11) providing a rotating movement,a primary screw mechanism (3, 6, 14) with an input which is connected to the drive means (11) and an output,a secondary screw mechanism (7, 13) with an input and output, wherein the input of the secondary screw mechanism is connected with the output of the first screw mechanism, the secondary screw mechanism being linearly moved by the first screw mechanism,a spring (4) providing a force acting on the primary or secondary screw mechanism, andmeans (12, 13) for transferring the linear movement of the secondary screw mechanism to the driven means.
1 Assignment
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Accused Products
Abstract
An actuator converting a rotary movement into a linear movement is disclosed. The actuator includes a drive means (11), a primary low friction screw mechanism (3, 6, 14) driven by the drive means, a secondary traditional screw mechanism (7, 13) which is connected to the primary screw mechanism and moved linearly by this. The secondary screw mechanism transfers the linear movement to a driven means, such as a clutch. The primary screw mechanism is performing the working stroke proper, while the secondary screw mechanism is arranged to compensate for changes in the engagement point of the driven means. One of the screw mechanisms is provided with a spring (4) making the actuator self-regulating.
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Citations
16 Claims
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1. An actuator for providing a linear force to a driven means,
characterized in that it includes: -
a drive means (11) providing a rotating movement, a primary screw mechanism (3, 6, 14) with an input which is connected to the drive means (11) and an output, a secondary screw mechanism (7, 13) with an input and output, wherein the input of the secondary screw mechanism is connected with the output of the first screw mechanism, the secondary screw mechanism being linearly moved by the first screw mechanism, a spring (4) providing a force acting on the primary or secondary screw mechanism, and means (12, 13) for transferring the linear movement of the secondary screw mechanism to the driven means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification