A switching apparatus for a driving system includes a motor, a first function unit, a second function unit and a power switching unit. The power switching unit includes a planetary gear set connected to the motor and driven by the motor and a swinging mechanism connected to the planetary gear set and driven by the planetary gear set. The power switching unit is switchable between a first position, where the power switching unit is drivingly connected to the first function unit, and a second position, where the power switching unit is drivingly connected to the second function unit.

A device for damping the movement of a pivotably mounted component, in particular of a flap which is mounted pivotably in a vehicle, the device including a rotation damper and a transmission element which is connectable to the component in such a manner that a pivoting movement of the component brings about a rotation of the transmission element, wherein the transmission element has a toothing at least in sections on its circumference, and wherein a toothed gearing is provided which is in engagement with the toothing of the transmission element and multiplies a rotational speed of the transmission element into a higher rotational speed of the rotation damper.

A door curtain anti-dropping falling device for a rolling door is provided. The device comprises a worm connected to the output shaft of the door operator, a drive shaft driving the winding shaft, a worm wheel having plural oblique elongated grooves and fixedly mounted on the drive shaft and meshes with the worm, a driven wheel having plural oblique elongated holes and is driven by the worm to move synchronously with the worm wheel, a limiting disk for restricting the driven wheel from moving axially, and plural latching pins extending through the elongated holes and received in the elongated slots. Under the normal operation of the door operator, the latching pins are retained in the center positions of the elongated holes and grooves. When the worm wheel are excessively worn and dislocated from the driven wheel, the latching pins lock the worm wheel and stop the winding shaft from rotating.

A damper apparatus possible to suppress abnormal sounds immediately after the locking of gears has been released is provided. In a first lock mechanism of the damper apparatus, a first arcuate outer-peripheral part peripherally adjacent to a teeth-missing gear in a drive gear enters a portion of a plurality of teeth in which some teeth are narrowed in the axial direction to restrain a sector gear, the teeth being meshed with the drive gear in the sector gear. In the tooth nearest to the first arcuate outer-peripheral part in the teeth-missing gear, the curvature of a first tooth flank on the side opposite the first arcuate outer-peripheral part is less than the curvature of a second tooth flank on the first arcuate outer peripheral part side, and the tooth has a curved surface continuous from the first tooth flank to the second tooth flank.

A self-braking gear (2) comprises: an input shaft (4), an output shaft (6), a braking mechanism (8), which is configured for braking the output shaft (6), and a planetary gear (10). The planetary gear (10), which is connected between the input shaft (4) and the output shaft (6), is configured to activate the braking mechanism (8) in order to brake the output shaft (6), when no torque is provided via the input shaft (4). The self-braking gear (2) may be employed in a people conveyor (50) such as an escalator.

For a gear train GL including a drive gear 33 and an idler gear 34 engaged with each other and a lock gear 35, provided are a first drive means 3A configured to linearly drive the lock gear 35 in forward and backward directions, a second drive means 3B configured to rotationally drive the drive gear 33 in normal and reverse directions, and a controller C configured to control the both drive means 3A and 3B. The controller C starts driving the lock gear 35 at the time of an unlocking operation, from an engagement position toward the disengagement position through the first drive means 3A, and when the drive is started, the controller C drives the drive gear 33 into one of normal and reverse directions and into the other direction through the second drive means 3B with a polarity reversal in a predetermined cycles T1 and T2.

A lock device has a pair of locking elements with internal locking teeth, a pair of shafts with external locking teeth configured for meshing engagement with the internal locking teeth, a pair of housing portions configured to receive and retain the respective shafts, and a case configured to receive the locking elements. The locking elements are permitted to undergo sliding movement within the case between first and second states of the lock device. In the first state, the internal locking teeth of the locking elements are disposed in respective meshing engagement with the external locking teeth of the shafts so that the case cannot undergo rotational movement relative to the shafts. In the second state, the internal locking teeth of the locking elements are not disposed in meshing engagement with the external locking teeth of the shafts so that the case can undergo rotational movement relative to the shafts.

A diverter valve includes a diverter valve assembly, a diverter valve transmission assembly, a drive motor and a control device used to control the drive motor. Controlled by the control device, the drive motor drives the diverter valve transmission assembly to perform a transmission action, so as to drive the diverter valve assembly to perform switching actions. The diverter valve transmission assembly is an intermittent gear transmission assembly. Driven by the drive motor, each time the intermittent gear transmission assembly performs the transmission action at least once, the control device controls the drive motor to stop driving. In this way, during the action process, not only the transmission is stable and reliable, the noise is low, but it is also wear-resistant enough under high-frequency use, which can meet the requirements of long-term working consumption of the beverage machine.

A people conveyor (10) comprises: a chain of conveyance elements (12), which are configured for conveying people; a drive unit (14), which is configured for driving the chain of conveyance elements (12); and a self-locking gear (20; 40), which is configured to lock when no torque is transmitted from the drive unit (14) to the chain of conveyance elements (12).

A switching apparatus for a driving system includes a motor, a first function unit, a second function unit and a power switching unit. The power switching unit includes a planetary gear set connected to the motor and driven by the motor and a swinging mechanism connected to the planetary gear set and driven by the planetary gear set. The power switching unit is switchable between a first position, where the power switching unit is drivingly connected to the first function unit, and a second position, where the power switching unit is drivingly connected to the second function unit.