Planetary rolling transmission mechanism and actuator having said planetary rolling transmission mechanism
A transmission mechanism and actuator technology, applied in the direction of transmission devices, electric components, electromechanical devices, etc., can solve problems such as low efficiency
Active Publication Date: 2019-12-10
SCHAEFFLER TECH AG & CO KG
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Problems solved by technology
If the efficiency is very low, a correspondingly constructed actuator is self-locking, but a correspondingly high torque has to be applied to move the actuator and the necessary dimensioning of the rotationally driven electric motor is correspondingly large
Method used
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[0018] figure 1 A schematic illustration of a planetary rolling gear 1 is shown, which has a first rotary element 2 , which is rotationally driven by an electric motor (not shown) and arranged axially fixedly, which is shown here as a screw 3 . out. Arranged around the first rotary component 2 is an axially displaceable and rotationally fixed second rotary component 4 , which is here designed as a spindle nut 5 . The planets 6 are accommodated rotatably in a cage 7 distributed over the circumference between the rotary components 2 , 4 . In this case, the planets 6 roll by means of thread sections (not shown in detail) on the thread 8 of the first rotary component and by means of groove sections (not shown in detail) on the groove sections 9 of the second rotary component 4 . Scroll up. Thus, when the first rotating member 2 is rotationally driven and the threaded connection 10 formed by the thread 8 and the threaded segments of the planetary elements 6 is achieved, the rot...
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The invention relates to a planet rolling transmission mechanism and an actuator having the planet rolling transmission mechanism. The planet rolling transmission mechanism includes a first threaded rotation member rotationally driven by a motor and received in a manner of being fixed to a housing, a second rotation member being capable of axially moving with respect to the first rotation member, being received in an anti-torsion manner, and having a groove section, and a planet member distributed on the periphery and accommodated in a carriage in a rotational manner, the planet member is provided with a threaded section rolling on the threads of the first rotation member and a groove section rolling on the groove section of the second rotation member. In order to improve the cooperation of the planet rolling transmission mechanism and the actuator along the preferable linear movement direction, a flywheel is arranged between the carriage and the second rotation member.
Description
technical field [0001] The invention relates to a planetary rolling gear for a motor vehicle and to an actuator having such a planetary rolling gear, said planetary rolling gear having a rotating drive driven by an electric motor, which is received in an axially fixed manner with a housing. A threaded first rotating member and a second rotating member axially displaceable relative to said first rotating member, torsionally accommodated, having a groove section and distributed on the circumference and rotatably The planets are accommodated in the cage in such a manner that the planets have thread segments rolling on the threads of the first rotating member and groove segments rolling on the groove segments of the second rotating member. Background technique [0002] In a motor vehicle, for example, in order to operate devices arranged in the drive train in the form of clutches such as friction clutches, dual clutches, separating clutches, brakes, parking locks, etc., there is...
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IPC IPC(8): F16H25/22
CPCF16H25/2252H02K7/10
Inventor 多米尼克·赫尔科默
Owner SCHAEFFLER TECH AG & CO KG