The present invention relates to an actuator for an electronic parking brake. The actuator for an electronic parking brake of the present invention includes a motor configured to provide a driving force, and a housing in which a gear unit for transmitting the driving force of the motor is mounted. The gear unit includes a worm gear to which the driving force of the motor is transmitted, a plurality of planetary gears coupled to an outer side of a sun gear which is provided in the worm gear, and a carrier configured to rotatably support the planetary gears, have the same rotation shaft as a rotation shaft of the sun gear, and output the driving force. A carrier accommodation unit coupled to outer sides of the planetary gears is formed in the housing.

The present invention relates to an actuator for an electronic parking brake. The actuator for an electronic parking brake of the present invention includes a motor configured to provide a driving force, and a housing in which a gear unit for transmitting the driving force of the motor is mounted. The gear unit includes a worm gear to which the driving force of the motor is transmitted, a plurality of planetary gears coupled to an outer side of a sun gear which is provided in the worm gear, and a carrier configured to rotatably support the planetary gears, have the same rotation shaft as a rotation shaft of the sun gear, and output the driving force. A carrier accommodation unit coupled to outer sides of the planetary gears is formed in the housing.

The present invention is characterized by comprising: a pair of worm shafts, which are arranged in parallel with each other so as to have gear directions that are opposite to each other, and which are configured to be rotated in the same direction by a driving means; a following shaft that crosses the middle of the pair of worm shafts in the perpendicular direction; a pair of ring gears fixedly installed on the following shaft so as to face each other from both sides of the worm shafts; a worm wheel, which engages with the outer side of each worm shaft, and which has shaft gears formed on both sides thereof, respectively, such that the shaft gears engage with the ring gears; and a rotating member connected to the following shaft such that a rotating force, which is in a speed-reduced sate, is output.

The present invention is characterized by comprising: a pair of worm shafts, which are arranged in parallel with each other so as to have gear directions that are opposite to each other, and which are configured to be rotated in the same direction by a driving means; a following shaft that crosses the middle of the pair of worm shafts in the perpendicular direction; a pair of ring gears fixedly installed on the following shaft so as to face each other from both sides of the worm shafts; a worm wheel, which engages with the outer side of each worm shaft, and which has shaft gears formed on both sides thereof, respectively, such that the shaft gears engage with the ring gears; and a rotating member connected to the following shaft such that a rotating force, which is in a speed-reduced sate, is output.

A rotary drive system for a roller blind. The drive system comprises a handle a worm gear, a bull gear, and a planetary gear drive system. The handle causes rotation of the worm gear, that engages the bull gear, that engages the planetary gear carrier of the planetary gear drive system. The sun gear of the planetary gear drive system is configured to engage the roller tube of the roller blind. Rotation of the worm gear causes a rotation of the bull gear which rotates the planetary gear carrier, causing the planetary gears to impart rotational motion to the sun gear and rotation of the roller tube at a rate faster than the rotation of the worm gear, said planetary gear carrier causing said planetary gears to impart rotational motion to said sun gear and rotation of the roller tube at a rate faster than the rotation of said worm gear.

A motor-transmission arrangement in particular for an adjustment device in vehicles for adjusting two vehicle parts which can be adjusted relative to one another can include a planetary transmission with at least one pinion cage, at least one planet wheel which is rotatably supported in the pinion cage and with a planet wheel cogging, and with at least one hollow gear with an inside cogging which is engaged with the planet wheel cogging, and an electromotor with a motor shaft which can rotate about a motor shaft axle and which comprises a motor shaft cogging arranged directly on the motor shaft, which cogging is engaged with the planet wheel cogging. The disclosure also relates to an adjustment device with such a motor-transmission arrangement and to the usage of such a motor-transmission arrangement in adjustment devices.

A bearing assembly for supporting a helical-wheel shaft of a helical planetary gear, in particular an adjustment device in vehicles for adjusting two mutually adjustable vehicle parts, wherein the helical-wheel planetary gear is a helical-wheel shaft with a helical-gear toothing, which shaft is rotatably mounted about a helical-wheel shaft axis, and a planetary carrier comprising at least three helical planetary gears, each rotatably mounted in the planetary carrier about a planetary gear axis, and each having a planetary gear toothing, wherein the helical gear planetary axes extend obliquely to the helical-wheel shaft axis, and the bearing assembly for supporting the helical gear shaft has a first bearing section and a second bearing section, wherein the first bearing section consists of an axial and radial bearing, and the second bearing section consists of helical-wheel planetary gears, wherein the planetary gear toothing in the second bearing section meshes with the helical-gear toothing.

A bearing assembly for supporting a helical-wheel shaft of a helical planetary gear, in particular an adjustment device in vehicles for adjusting two mutually adjustable vehicle parts, wherein the helical-wheel planetary gear is a helical-wheel shaft with a helical-gear toothing, which shaft is rotatably mounted about a helical-wheel shaft axis, and a planetary carrier comprising at least three helical planetary gears, each rotatably mounted in the planetary carrier about a planetary gear axis, and each having a planetary gear toothing, wherein the helical gear planetary axes extend obliquely to the helical-wheel shaft axis, and the bearing assembly for supporting the helical gear shaft has a first bearing section and a second bearing section, wherein the first bearing section consists of an axial and radial bearing, and the second bearing section consists of helical-wheel planetary gears, wherein the planetary gear toothing in the second bearing section meshes with the helical-gear toothing.

A motor-transmission arrangement for an adjusting device for adjusting two components adjustable relative to each other can include a planetary gear system having a planetary carrier, a planetary gear with planetary gear toothing and which is rotatably mounted in the planetary carrier and with a ring gear with an internal toothing which engages with the planetary gear toothing. An electric motor can have a motor shaft which can be rotated about a motor shaft axis, which shaft interacts with the planetary gear system, and a housing which is closed with first and second housing covers in which the motor shaft is mounted viaa first bearing section and a second bearing section.

A planetary drive includes static and freely rotating outer rings having different diameters, sun gear, and multiple planet gears disposed around the sun so that their axis of rotation is rotated relative to the drive axis, causing each planet to contact each ring at a point along its length. The sun contacts each planet at a point between its contact points with the rings, such that the force at the contact points is enough that the resulting traction can transmit torque with minimal backlash. A carrier supports the planets such that each can rotate about both its own axis and the drive axis. There may be involute teeth or other surface features on parts of the rings, planets, and sun. In a sun-less configuration, the drive is actuated by the carrier. In a single-stage version, the freely rotating ring is absent and output is obtained from rotation of the carrier.