Abstract: A ball screw assembly includes a ball screw nut having an inner surface that defines a hollow, an outer surface opposite the inner surface, and a port that defines an opening that extends through the ball screw nut from the outer surface to the inner surface. A deflector includes a body that defines a recirculation passage. First and second resilient fingers are coupled to the body. The deflector is operable to move from an uninserted position, wherein the deflector is disposed outside of the opening, to an inserted position, wherein the deflector extends within the opening. With movement of the deflector from the uninserted position to the inserted position, the fingers are elastically deformed from at-rest conditions to compressed conditions due to contact between the fingers and the port, and, subsequently, the fingers rebound back toward the at-rest conditions within the hollow as the deflector enters the inserted position.

Abstract: An auto-compensation-type guide device for a moving coil of a large-scale vibration table includes a table body fixed at one side of a moving coil. A piston cylinder body is fixedly connected on an upper part of the table body. A force transmission assembly is slidably arranged in a cavity proximate to one side of the moving coil in the piston cylinder body, one end of the force transmission assembly is abutted on a piston head plate inside the piston cylinder body, and the other end is extended out of the piston cylinder body and is in transmission-connection with the moving coil. A pressurized cavity is located on the other side of the piston head plate on the piston cylinder body, and the wall of the pressurized cavity is provided with the oil and gas inlets. The oil and gas compensation pipeline is in connection with the oil and gas inlet on the pressurized cavity.

Abstract: Drive system (S), comprising at least two drive units (1, 2) each for receiving and driving a spindle (90) with a spindle axis (A90), at least one coupling device (K) which elastically couples the two drive units (1, 2) to each other in the direction of the spindle accommodating axis (AA), each coupling device (K) comprising at least one spring device, which, in each case in an unstressed neutral state in which no spindle (90) is accommodated in the drive system (S), holds the two drive units (1, 2) in each case stably at a predetermined distance (D12) and provides a spring travel in each case from the neutral state in mutually opposite directions along the spindle accommodating axis (AA), as well as an adjustment system (A) and drive motor (M).

Abstract: The linear actuator comprises elongated first and second bands that cooperate to form an extractable and retractable column. Rotatable first and second band guide members respectively guide turns of the first and second bands into intertwined engagement. A power actuator causes rotation of the first and second band guide members such that the extractable and retractable column may be extracted or retracted. A base carries the power actuator, the first and second bands and the first and second band guide members. An anti-rotation mechanism comprises a first anti-rotation member attached to the base and a complementary second anti-rotation member attached to at least one of the first and second bands, with the first and second anti-rotation members engaging one another in the column to prevent rotation of the column relative to the base. The engagement of the first and second anti-rotation members is non-punctual about a periphery of the column.

Abstract: A gear shift actuator has a linear drive assembly including a driven component configured to actuate a shift fork; a rotary member which is supported to be rotatable, but unmovable in an axial direction defined by a rotary axis of the rotary member, and an electric motor configured to rotate the rotary member. The driven component is driven by rotary movement of the rotary member for linear movement parallel to the axial direction in a first direction from a neutral position to a first gear engaged position and back to neutral, when the rotary member is driven to rotate first in a first rotational direction and then in a second rotational direction opposite to the first rotational direction.

Abstract: A humanoid robot includes a first actuator, a second actuator, and a wire bundle interconnecting the two. The first actuator has a first side with a first printed circuit board (PCB) including a first PCB terminal having a first plurality of pins, and an opposed second side including an output portion, an actuator cover coupled to the output portion and having a wire bundle opening formed therein, and an actuator opening formed through an extent of the second side. The second actuator includes a second PCB with a second PCB terminal having a second plurality of pins, the first plurality being greater in number than the second plurality. The wire bundle includes end connectors coupled to the respective PCB terminals and a plurality of wires extending between them, the wires routed through the actuator opening and the wire bundle opening of the first actuator.

Abstract: A clutch chamber has a first outlet opening, which is arranged at an about 8 to 10 o'clock position, as viewed in the circumferential direction of the dual-clutch transmission, extending around the axial direction of the dual-clutch transmission, and is provided for direct return of the transmission oil into the transmission housing base area. Furthermore, the clutch chamber has a second outlet opening, which is arranged at an about 2 to 4 o'clock position, as viewed in the circumferential direction of the dual-clutch transmission, and is provided for a return flow of the transmission oil into the transmission housing base area.

Abstract: A worm gear reducer including an elastic urging portion (6) and an elastic clamping portion (7). The elastic urging portion (6) urges a radially inner side member (5) toward a worm wheel (3) side. The elastic clamping portion (7) has a pair of clamping plate springs (41) that are disposed on both sides of the radially inner side member (5) in a third direction, in a portion between an outer circumferential surface of the radially inner side member (5) and an inner circumferential surface of a radially outer side member (9). Each of the clamping plate springs (41) exhibits a non-linear spring characteristic in which a spring constant increases as a deflection amount in a direction including a third-direction component increases.

Abstract: A ball screw comprising a screw shaft, a ball nut, and alpha and beta load circuits. The alpha and beta load circuits each include first and second parts. The screw shaft is longitudinally extending with a longitudinal central axis (A) and at least part of the longitudinally extending surface of the screw shaft comprises an external thread, and at least one of the first parts of the alpha and beta load circuits comprise a part of the external thread. The ball nut comprises a body, a bore, the second parts of the alpha and beta load circuits, and an alpha and a beta lubricant channel. The bore is defined by the body, is longitudinally extending with a longitudinal central axis (A), has a first and second end, and has at least one longitudinally extending surface extending between the first and second ends.

Abstract: An oil guiding arrangement for a transmission having a first output shaft, a second output shaft, and a bearing for rotatably supporting the first output shaft at the second output shaft, the second output shaft having an offset section extending in a radial direction and defining an oil channel extending in an axial direction for supplying oil to the bearing. The oil guiding arrangement includes a stationary component defining a main oil channel and an opening, where the opening opens from the oil channel into an oil volume. The second output shaft is rotatably supported at the stationary component with the opening of the main oil channel extending opposite in the axial direction to the offset section of the second output shaft. The oil channel for the bearing of the first output shaft is fluidly connected to the main oil channel via the oil volume.

Abstract: A portable tool having an elongate frame with a front-to-rear lengthwise axis. The portable tool is configured to be held in a starting orientation, wherein the lengthwise axis of the frame extends substantially horizontally, with a user's hands separately engaging the portable tool at a first region and a second region forwardly of the first region. The portable tool has: a) a gripping assembly at the second region; and b) an engaging structure at the first region and including a handle with a gripping length that extends along a gripping line.

Abstract: A humanoid robot includes first and second actuators interconnected by a wire bundle routed internally through the actuator structure rather than along its periphery. The first actuator includes a printed circuit board (PCB) positioned near a first side, the PCB having a terminal with signal pins, a positive voltage pin, and a ground pin. A second side of the first actuator, opposite the first side, includes an output portion, an actuator cover with a wire bundle opening, and an actuator opening extending through the second side. The second actuator includes a PCB with a corresponding terminal. The wire bundle has end connectors coupled to the respective PCB terminals, with the wires passing through both the actuator opening and the wire bundle opening of the first actuator. This internal routing arrangement enables compact, organized electrical interconnection between actuators without exposed peripheral wiring across the robot's joints.

Abstract: A humanoid robot comprising first and second actuators interconnected by a wire bundle. The first actuator includes a printed circuit board (PCB) with a terminal on a first side, and a second side featuring an output portion, an actuator cover with a wire bundle opening, and an actuator opening extending through the second side. The second actuator similarly includes a PCB with a terminal. A wire bundle, having end connectors coupled to each PCB terminal, includes a plurality of wires routed through the actuator opening and the wire bundle opening of the first actuator. The wires include a first portion positioned within the first actuator arranged in one shape, and a second portion external to the first actuator arranged in a different shape. The robot may further include a head-mounted screen, indicator lights, and a computer running a vision-language-action model enabling autonomous operation in human-centric environments.

Abstract: A spring assembly for a rotary-type series elastic actuator (SEA) for use in robotic applications. The SEA including a motor, gear transmission assembly, spring assembly, and sensors. In one example, a robotic joint may include the SEA as well as two links coupled with each other at the joint assembly. The two links may be designated as input and output links. Each link may have a joint housing body which may be concentrically connected via a joint bearing so that they freely rotate against each other. The housing frame of the SEA may be fixed at the joint housing body of the input link while the output mount of the spring assembly of the SEA may be concentrically coupled with the joint housing body of the output link.

Abstract: A gearmotor assembly comprises a stepper motor, a reduction gearbox, and a torque limiter. The stepper motor is configured to receive input power to selectively rotate a motor shaft about a motor axis. The reduction gearbox includes a reduction gear assembly, a motor shaft coupling configured to operably couple the motor shaft and the reduction gear assembly, and a gearbox coupling operably coupled to the reduction gear assembly and having a gearbox coupling axis. The torque limiter is positioned to operably couple the stepper motor, the reduction gear assembly, and the gearbox coupling when a relative net torque between the stepper motor, the reduction gear assembly, and the gearbox coupling is below a maximum torque and to operably decouple the stepper motor, the reduction gear assembly, and the gearbox coupling when the relative net torque is at or above the maximum torque.

Abstract: A motor vehicle drive system having a traction transmission device. A traction transmission drive shaft is rotatably mounted in the transmission housing device. A traction transmission intermediate shaft is arranged axially parallel to and radially spaced apart from the traction transmission drive shaft. A traction transmission output shaft is arranged axially parallel to and radially spaced apart from the other two traction transmission shafts. The motor vehicle drive system is characterized in that the three traction transmission shafts are each mounted in the traction transmission housing device with a fixed/floating bearing; such a bearing has in each case at least one fixed bearing for absorbing axial forces; and at least two of these fixed bearings are mounted in the traction transmission cover.

Abstract: A power transmission device includes a case including an oil reservoir at a lower portion thereof, and a first shaft, a second shaft, and a third shaft which are shaft-supported by the case. The case includes an air breather chamber that separates air and an oil in the case and communicates with the atmosphere, an oil catch tank that reserves an oil raked up by a third gear portion of the third shaft, and an oil guide that introduces the oil raked up by the third gear portion into the oil catch tank. The air breather chamber is provided above and near the third shaft. The oil catch tank is provided above and near the first shaft. The oil guide is provided above the second shaft. The second shaft is disposed outside the oil reservoir in the case.

Abstract: A centering mechanism is provided with a speed reducer, a bearing that is disposed radially outward from the center line of the speed reducer, and an adapter that is fixed to the speed reducer and maintains the speed reducer and the bearing to be coaxial.

Abstract: A linear actuator for height adjustable columns comprising a threaded spindle with a longitudinal extension along a longitudinal axis, the spindle being adapted to be rotated by a driving shaft, characterized in that the spindle is provided with a right-hand thread at a first portion of the longitudinal extension and a left-hand thread at a second portion of the longitudinal extension. The linear actuator further comprises one right-hand threaded nut member and one left-hand threaded nut member. At least one of the nut members comprises a first and a second part configured to be in threaded connection with the spindle on opposing sides of the spindle. The threaded connection of the right-hand and left-hand threaded nut member to the spindle provides opposite linear movement of the right-hand threaded nut member relative the left-hand threaded nut member along the longitudinal axis.

Abstract: An oil redirection catcher includes a planar portion, an aperture arranged in the planar portion, first and second edge portions extending from the planar portion, an arcuate edge portion, and a first tab portion arranged to fix the oil redirection catcher to an axle housing. The second edge portion, together with the first edge portion and the planar portion, forms a channel. The arcuate edge portion connects the first edge portion and the second edge portion, delimits the channel, and at least partially surrounds the aperture. In an example embodiment, the first edge portion is longer than the second edge portion. In an example embodiment, the channel narrows towards the aperture.