Tubutor motor
AssigneeValeo Auto-Electric Wischer und Motoren GmbH
InventorRainer Bruhn
Life of this patent
Estimating the term…
Abstract
A tube motor with an electric motor drive with a drive shaft located in a gear box. A reducing gear with a driven shaft is located in a gear box and coupled with the drive shaft via a gear input shaft for rotary securing of the driven shaft especially when the drive is disengaged. A wrap spring brake with a wrap spring works against the gear box, while the drive shaft and the gear input shaft work together with the wrap spring. Located between the wrap spring and the gear housing and secured against torsion is an annular element which diverts a moment introduced by the driven shaft into the gear housing.
Claims20
A tube motor comprising:
- an electric motor drive with a drive shaft located in a motor housing;
- a reducing gear a driven shaft coupled with the drive shaft via a gear input shaft;
- a gear box supporting the reducing gear and the driven shaft;
- and
- a wrap-spring brake working against the gear box, including a wrap spring securing the driven shaft against rotation upon disengagement of the electric motor drive and an annular element mounted free of torsion on the gear box and positioned between the wrap spring and the gear box, the annular element diverting into the gear box a moment of torsion introduced by the driven shaft.
A tube motor comprising:
- an electric motor drive with a drive shaft located in a motor housing,
- a reducing gear with a driven shaft coupled with the drive shaft via a gear input shaft;
- a gear box supporting the reducing gear and the driven shaft and
- a wrap-spring brake working against the gear box, including a wrap spring securing the driven shaft against rotation upon disengagement of the electric motor drive and an annular element positioned between the wrap spring and the gear box, the annular element diverting into the gear box a moment of torsion introduced by the driven shaft and the annular element has one of locking hooks and locking indentations on its periphery which can be engaged together with one of locking indentations and locking hooks respectively located on the inner side of the gearbox.
A tube motor comprising:
- an electric motor drive with a drive shaft located in a motor housing;
- a reducing gear with a driven shaft coupled with the drive shaft via a gear input
- a gear box support the reducing gear and the driven shaft;
- and
- a wrap-spring brake working against the gear box, including a wrap spring securing the driven shaft against rotation upon disengagement of the electric motor drive and an annular element positioned between the wrap spring and the gear box, the annular element diverting into the gear box a moment of torsion introduced by the driven shaft and wherein the reducing gear has a planetary gear drive, and the planetary gear drive has a sun wheel as the gear input shaft and the side of the sun wheel facing toward the wrap spring has a plurality of lands cave in cross section, around which the wrap spring is positioned.
In a tube motor including an electric motor drive mounted on a drive shaft and a reducing gear coupling the drive shaft with a driven shaft located in a gear box, the improvement comprising:
- a wrap-spring brake securing the driven shaft from rotating opposite a direction of rotation of the electric motor drive, the wrap-spring brake including:
- a wrap spring operatively coupled to the driven shaft;
- and
- an annular element fixedly mounted in the gear box and surrounding the wrap spring, the annular element absorbing a moment of torsion resulting from the effort of the driven shaft to rotate opposite the direction of rotation of the electric motor drive.
Dependencies are inferred from the claim text.