Abstract: A transmission assembly and a lifting column are provided. The transmission assembly includes a first screw rod, a second screw rod, a first transmission sleeve sleeved over the first screw rod, and an actuating device for driving the first transmission sleeve to rotate. An end of the first screw rod proximal to the actuating device is fixed, and an end of the second screw rod distant from the actuating device is fixed. A second transmission sleeve is disposed between the first screw rod and the second screw rod, the second transmission sleeve and the first transmission sleeve are synchronously rotatable and are axially extensible and retractable relative to each other, and both ends of the second transmission sleeve are in threaded transmission connection with the first screw rod and the second screw rod, respectively.

Abstract: Disclosed is a linear adjuster, comprising: a spindle-and-spindle-nut mechanism, a first adjustment part, and a second adjustment part. The first adjustment part comprises a first main body and a first stop device. The second adjustment part comprises a second main body and a second stop device. The first adjustment part and the second adjustment part may be moved relative to each other by means of the spindle-and-spindle-nut mechanism which comprises a spindle longitudinal axis (L3). The first stop device and the second stop device come to a stop state when the linear adjuster performs a retraction travel movement or an extension travel movement and the first adjustment part and the second adjustment part are in a predefined stop travel position relative to each other. A positioning device, a positioning assembly and a method for repairing a linear adjuster.

Abstract: A linear drive has a linear unit for carrying out a linear movement, a motor for the motorized driving of the linear unit, and a drive connection which extends from the motor as far as the linear unit. In order to ensure reliable operation even in the event of a power failure, it is proposed that the linear drive have a centrifugal brake which is rotationally coupled to the drive connection.

Abstract: A steer-by-wire steering device is provided with: a first stopper shaped hollow; a second stopper shaped hollow and structured such that a steering shaft is coupled to the second stopper, the second stopper including a small diameter portion and a large diameter portion; a nut engaged to a thread formed on an outer circumference surface of the small diameter portion such that the nut is positioned between the first stopper and the large diameter portion of the second stopper; and a hollow guide ring having an outer circumferential surface and an inner circumferential surface, the hollow guide ring provided between a housing and the nut such that the outer circumferential surface is coupled to the housing and the nut is coupled to be supported in the inner circumferential surface in a circumferential direction.

Abstract: A clutch includes a clutch housing, a driving rotating body, a driven rotating body, a roller arranged between the clutch housing and the driven rotating body, a support member that holds the roller between the clutch housing and the driven rotating body, and grease arranged between the clutch housing and the roller. The support member includes a guiding portion that guides grease, which has been moved from a space between the clutch housing and the roller, to the space between the clutch housing and the roller during rotation.

Abstract: A device for a high-clearance motor vehicle is provided. Preferably, the device comprises a linear actuator, a hollow tube having a first helix and a second helix; a step arm connected at a distal end to the linear actuator such that when the linear actuator applies a linear force to the step arm, the step arm rotates. A first end portion of a distal end of the step arm inserted in the hollow tube extends through the first helix and a second end portion of the distal end of the step arm inserted in the hollow tube extends through the second helix. When the device is operated, depending on user selection, the device can serve as a vehicle step, protect the vehicle door(s), or be in a retracted position.

Abstract: A drive device for moving a movable part of a piece of piece of furniture between a closed position and an open position includes a motor pivotably connectable to a body of the piece of furniture via a support assembly, a first threaded element rotatably drivable by the motor, and a second threaded element engaged with said first threaded element. The second threaded element is translationally displaced along the first threaded element upon rotation of the first threaded element. An actuating element having a first stop and a second stop is included and is arranged displaceably relative to the first threaded element along an axis of motion. The second threaded element is arranged axially displaceably relative to the actuating element between the first stop and the second stop of the actuating element. Also, a fitting element pivotally connected to the actuating element and connectable to the movable furniture part is included.

Abstract: The present converter for converting reciprocating motion into rotary motion comprises a pair of rotors counter-rotating in axial alignment, said rotors having rotor magnets and auxiliary rotor magnets fastened thereon, and a pair of rods moving reciprocally in opposite directions relative to one another along the axis of rotation of the rotors, said rods having rod magnets and auxiliary rod magnets fastened thereon, wherein at least some of the rotor magnets and/or the rod magnets are arranged such that their poles are disposed on several concentric cylindrical working surfaces simultaneously.

Abstract: A spindle drive assembly for opening and/or closing a vehicle flap including a spindle drive assembly housing extending along a spindle drive axis and, between its axial ends, a stop section acting axially on both sides. A motor gear unit is arranged on a first side of the stop section and a spindle unit is arranged on a second side of the stop section. Furthermore, a vehicle flap with such a spindle drive assembly. In addition, a method of assembling a spindle drive assembly.

Abstract: A linear joint includes a motor assembly includes a rotating shaft for outputting motion; a transmission mechanism including a screw and a nut threadedly connected to the screw, the nut being coaxial with respect to and securely connected to the rotating shaft so as to be rotatable together with the rotating shaft; and a rod connected to a first end of the screw so as to move together with the screw along a lengthwise direction of the screw.

Abstract: A linear actuator, a housing for such a linear actuator, an actuation system, and a method for assembling a linear actuator. The linear actuator has an actuating mechanism and a housing. The actuating mechanism includes a spindle and a nut and it is configured to convert rotational motion into translational motion. The housing has two housing parts and the actuating mechanism is at least partially arranged in the housing. The two housing parts form a plurality of separate cavities that are configured to receive separate components of the linear actuator, in particular of the actuating mechanism.

Abstract: The invention relates to an electrically driven clutch actuators (1) for actuating the clutch of a transmission of a vehicle. An actuator comprises a spindle nut (11) on a spindle (9) and a pressure piece (13) displaceable relative to the spindle nut (11) and coupled to the spindle nut by a biasing spring (15). By rotation of the threaded spindle under a driving force of an electric motor (5), the spindle nut (11) compresses the biasing spring (15) and displaces the pressure piece (13) to disengage the clutch. A latching mechanism (16) is configured to limit displacement of the spindle nut away from the pressure piece under the force of the expanding biasing spring when the driving force is reduced below a predetermined level. Further, a control unit is described that reduces the driving force in response to a trigger condition to reduce power consumption in the clutch disengaged state.

Abstract: A drive device includes a screw-and-nut system comprising a threaded rod and a first nut that is connected to the threaded rod by means of a screw connection; a gearset, allowing a rotational movement to be transmitted to the threaded rod, a first toothed wheel and a second toothed wheel engaged with the first toothed wheel; a set of stops comprising a first stop connected to the first wheel rotating about an axis of rotation of the first wheel and a second stop connected to the second toothed wheel rotating about an axis of rotation of the second wheel, the first stop and the second stop being configured and arranged to butt against one another so as to limit an angular travel of the threaded rod at a first angular position in a first direction.

Abstract: An electromotive furniture drive includes a housing having an opening, a drive motor attached to the housing and including an output shaft, and a standpipe inserted into the housing laterally in a form-fitting manner. The standpipe has an outer wall formed with a transverse groove, with a lifting spindle arranged in the standpipe. A gear assembly is arranged in the housing and configured to couple the output shaft of the drive motor to the lifting spindle. A locking element is configured to engage in the transverse groove and held in a recess in the housing.

Abstract: The present disclosure related to a travel stop assembly for preventing rotation, and undesired locking, of a shaft. The travel stop assembly may comprise a shaft that extends along an axis and is rotatable about the axis. A lead screw may extend along the axis and be operatively engaged, and rotatable, with the shaft about the axis. A nut may be in threaded engagement with the lead screw and axially movable along a length of the lead screw upon rotation of the lead screw. At least one stop pin may operatively engaged the lead screw and the at least one stop pin may extend from the lead screw perpendicularly relative to the axis. The stop pin may be positioned on the lead screw to stop rotation of the lead screw and the stop pin may prevent locking of the nut to the lead screw.

Abstract: Disclosed herein is a device for selectively limiting both rotational directions of a steering wheel, and provided is a steering angle limiting device of a steer-by-wire (SBW) system including a stopping gear configured to be rotated together with a steering shaft; a cam configured to receive a rotational force of an actuator and to be eccentrically rotated; and a stopper configured to be rotated in response to rotational operation of the cam and selectively engaged with gear teeth of the stopping gear, thereby restricting selectively forward and reverse directional rotations of the stopping gear.

Abstract: In a ball screw apparatus, a ball train including a plurality of main balls is housed in a raceway between a ball track of a ball nut and a ball track of a ball screw shaft. A coil spring housed in the raceway includes a first end that engages with an end of the ball train and a second end supported by a stopper (a first recessed portion, a protruding portion, or the like) of the ball nut. A stopper ball having a diameter larger than the diameter of the main ball is interposed between the stopper and the second end of the coil spring.

Abstract: A motor device is provided. The motor device includes a motor, a lead screw, a transmission mechanism and a housing. The transmission mechanism is configured to transmit rotation of the motor to the lead screw. The housing includes a housing outer wall to define a housing cavity and a partition to define a transmission cavity for accommodating the transmission mechanism. The transmission cavity is inside the housing cavity. The housing cavity also accommodates at least a portion of the lead screw. The partition includes a first protruding sidewall and a second protruding sidewall respectively on either side of the transmission cavity, and the transmission cavity is sealed for a lubricant that is used for the transmission mechanism and contained in the transmission cavity.

Abstract: Provided is an apparatus for limiting rotation of a steering wheel, and more particularly, an apparatus for limiting rotation of a steering wheel, whereby a rotation angle of the steering wheel can be limited to a predetermined angle. The apparatus for limiting rotation of the steering wheel, installed in a steering system, includes: an end-stopper disposed inside a housing through which a steering shaft on which the steering wheel is installed, passes, and the end-stopper limiting a rotation angle of the steering wheel to a predetermined angle.

Abstract: In a ball screw apparatus, a ball train including a plurality of main balls is housed in a raceway between a ball track of a ball nut and a ball track of a ball screw shaft. A coil spring housed in the raceway includes a first end that engages with an end of the ball train and a second end supported by a stopper (a first recessed portion, a protruding portion, or the like) of the ball nut. A stopper ball having a diameter larger than the diameter of the main ball is interposed between the stopper and the second end of the coil spring.

Abstract: Electrical telescopic strut construction, movable between an extended locked position and a retracted unlocked position, comprising: an external cylinder (1); an inner cylinder (2); a screw (3) rotatable disposed within the inner cylinder (2); a drive (4) configured to rotate the screw (3); a nut (5) being movable with respect to the external cylinder (1) responsive to the rotation of the screw (3); at least one segment (6) located in a radial opening of the inner cylinder (2) and movable radially outward and inward in response to the movement of the nut (5) and configured to engage the external cylinder (1) when moved radially outward and not to engage the external cylinder (1) when moved radially inward, a second inner cylinder (7) located external to the first inner cylinder (2) and internal to the external cylinder (1).

Abstract: An actuator of an aircraft includes at least one limit stop in which at least one of the bearing surfaces, named destructible bearing surface (19), has at least one destructible portion which is able to, and is arranged to, be irreversibly deformed under the effect of the co-operation by limit contact between the driving member bearing surface (19) and the driven member bearing surface (20). Each destructible portion of each destructible bearing surface is mounted to be removable with respect to the stop as to be able to be replaced.

Abstract: A collar is provided on the outer periphery of a rotor shaft and is integrated with a cylindrical member through apertures penetrating the outer wall of the rotor shaft.

Abstract: In a ball screw apparatus, a ball train including a plurality of main balls is housed in a raceway between a ball track of a ball nut and a ball track of a ball screw shaft. A coil spring housed in the raceway includes a first end that engages with an end of the ball train and a second end supported by a stopper (a first recessed portion, a protruding portion, or the like) of the ball nut. A stopper ball having a diameter larger than the diameter of the main ball is interposed between the stopper and the second end of the coil spring.

Abstract: A brake booster for a main brake cylinder of a motor vehicle includes a drive motor connected or connectable to a pressure piston for the main brake cylinder via a gear unit, where the gear unit includes a rotatable spindle nut, including a female thread and an axially displaceable, but rotatably fixed, spindle rod that includes a male thread, the male and female threads engaging into each other in order to convert a rotary motion of the drive motor into a translational motion of the spindle rod for actuating the pressure piston. The spindle nut is formed as two pieces and includes an inner part including the female thread and an outer part including an outer toothing, the inner and outer parts being made of different materials.

Abstract: In a ball screw apparatus, a ball train including a plurality of main balls is housed in a raceway between a ball track of a ball nut and a ball track of a ball screw shaft. A coil spring housed in the raceway includes a first end that engages with an end of the ball train and a second end supported by a stopper (a first recessed portion, a protruding portion, or the like) of the ball nut. A stopper ball having a diameter larger than the diameter of the main ball is interposed between the stopper and the second end of the coil spring.

Abstract: A linear actuator system comprising a linear actuator and at least one box with an openable cover. The box comprises a horizontal hinge pin in each side as well as a track in each side, which the respective hinge pins reach into, and where the track on a first run is horizontal and led out to a free edge such that the cover can be placed on the box in a horizontal movement and that the track has a second run in continuation of the first run, and where the second run has a sloping course, which extends down towards the bottom of the box such that the respective hinge pins when the cover is closed are led into the second sloping course of the track. The cover can thus be removed from the box, in case this would be desired, alternatively the cover can remain on the box and be opened by rotating around the horizontal hinge pins. Due to the design of the tracks, which the hinge pins reach into, the cover can be placed on and removed from the box in a horizontal position.

Abstract: A linear actuator system including a screw member elongated along a longitudinal axis, the screw member including a threaded portion and an end portion, a nut member coaxially received over the screw member and in threaded engagement with the threaded portion of the screw member, a ring member received over the end portion of the screw member, a flange member connected to the end portion of the screw member, and a threaded member in threaded engagement with the flange member, the threaded member having a distal end protruding toward the ring member.

Abstract: A linear actuator includes a housing, a transmission assembly, a slider, and a motor. The housing includes a base case and a cover case which are opposite combined with each other. A screw bracket is formed on an outer surface of the base case. The transmission assembly includes a worm and a worm wheel disposed at an end of the worm. The slider is disposed on the housing and engaged with the worm. The motor is screwed to the screw bracket and disposed out of the base case. The motor has an actuating shaft penetrating into the base case and engaged with the worm wheel. The motor can be fixed to the screw bracket in advance, which facilitates the assembly of the transmission assembly to the base case.

Abstract: Disclosed herein is a spindle drive for an adjustable element of a motor vehicle, wherein a drive unit and a spindle/spindle nut mechanism arranged downstream of the drive unit in the drivetrain, for generating linear drive movements are provided, wherein the spindle/spindle nut mechanism has a spindle and a spindle nut meshing with the spindle, wherein the spindle drive has two drive portions which run telescopically inside one another during a motorized adjustment, wherein the spindle is assigned to one drive portion and the spindle nut is assigned to the other drive portion wherein the two drive portions are coupled in a torque-transmitting manner to provide an antitwist safeguard.

Abstract: The life of an actuator such as a turbocharger VTG actuator is extended by reducing heat conduction from the turbine housing along the control linkage to the actuator link and into the actuator, thereby protecting sensitive electronic components. To this end, the control linkage may be made of a thermal energy retarding material in order to retard heat from the turbine housing assembly reaching the actuator.

Abstract: A linear actuator includes a fixed first end, a second end movable linearly along a central axis of the actuator, an inner cylinder configured to urge axial movement of the second end, and a piston assembly including a piston rod located inside of the inner cylinder. One or more locking pawls are located in pawl openings in the piston rod. The one or more locking pawls are selectably engagable with the inner cylinder to prevent relative motion of the piston rod and the inner cylinder. A lockbolt selectably releases the one or more locking pawls from engagement with the inner cylinder and includes an antilock pin engagable with a pawl opening in the one or more locking pawls to urge the one or more locking pawls away from the inner cylinder with axial movement of the lockbolt.

Abstract: A modular actuator (1) includes an actuation module (10), a gear module (20) and a telescoping module (30). The actuation module (10) includes a motor (11) and a drive worm (12) driven by the motor (11). The gear module (20) includes a gearbox (21) and a deceleration gear assembly (22) disposed in the gearbox (21). The deceleration gear assembly (22) includes a deceleration worm gear (221) engaged with the drive worm (12) and includes a deceleration worm (222) driven to rotate by the deceleration worm gear (221). The telescoping module (30) includes a drive worm gear (31), a lead screw (32) driven to rotate by the drive worm gear (31), and an extendable pipe (33) threadedly connected to the lead screw (32). The drive worm gear (31) is engaged with the deceleration worm (222), and the lead screw (32) is arranged parallel to the drive worm (13).

Abstract: A gear drive unit (1), for a seat adjuster or a power-assisted steering system, comprised of a spindle (40), on which a drive gear (42) that drives the spindle (40) is provided, a drive assembly (20), which drives the drive gear (42) by means of a driven element (500) and at least one device (30) on which the drive assembly (20) is at least flanged-mounted, and which operationally couples at least the driven element (500) and the drive gear (42). The invention provides that at least one additional support (100, 100?) is provided in which the drive gear (42) is mounted, and this support is fastened to the base part (50) and supports the device (30).

Abstract: A pneumatic decoupling device for an electromechanical actuator, in particular, for flight applications includes a pressure accumulator housing for storing a compressed gas, which can be released to a decoupling mechanism of an electromechanical actuator for separating the drive components, so that in the event of a decoupling the electromechanical actuator runs totally freely.

Abstract: Linear actuator comprising a housing (1), a reversible electric motor (7), a transmission (22), a spindle (5) driven by the electric motor through the transmission (22), a bearing (31) for embedding the spindle (5), a spindle nut (6) secured against rotation on the spindle, an outer tube (3) surrounding the spindle, an activation element (4) telescopically embedded in the outer tube (3) and connected to the spindle nut (6), a rear mounting (9) designed as a separate element and secured in the housing for mounting of the actuator. The rear mounting (9) is equipped with a seat (35) for the bearing (31) of the spindle. The seat (35) is connected to an opening (36), which is guided out on the side of the rear mounting (9), so that the bearing (31) of the spindle may be inserted sideways in the seat (35). Thus a linear actuator is provided having a rear mounting which is easier to mount and ensures an easier handling during the assembly of the linear actuator.

Abstract: An actuator includes a housing assembly, a ball nut, a ball screw, and a ball screw stop. The ball nut is rotationally mounted in the housing assembly, is adapted to receive an input torque, and is configured, upon receipt thereof, to rotate and supply a drive force. The ball screw is mounted within the housing assembly and extends through the ball nut. The ball screw has a first end and a second end, and is coupled to receive the drive force from the ball nut. The ball screw is configured, upon receipt of the drive force, to selectively translate between a stow position and a deploy position. The ball screw stop is mounted on the ball screw to translate therewith and is configured to at selectively engage the housing assembly while the ball screw is translating, and engage the ball nut when the ball screw is in the deploy position.

Abstract: An actuator includes a ball nut, a ball screw, and a ball screw stop. The ball nut is adapted to receive an input torque and in response rotates and supplies a drive force. The ball screw extends through the ball nut and has a first end and a second end. The ball screw receives the drive force from the ball nut and in response selectively translates between a retract position and a extend position. The ball screw stop is mounted on the ball screw proximate the first end to translate therewith. The ball screw stop engages the ball nut when the ball screw is in the extend position, translates, with compliance, a predetermined distance toward the first end upon engaging the ball nut, and prevents further rotation of the ball screw upon translating the predetermined distance.

Abstract: An apparatus for converting a rotational movement into an axial movement. A threaded rod is provided, on which a nut is arranged to be movable axially to the threaded rod. At least one blocking structure is provided, which is so arranged that it blocks rotational movement of the nut during the axial movement along the threaded rod. There is provided on the threaded rod at least one end stop, which limits axial movement of the nut along the threaded rod. Between the axially movable nut and the end stop, a wedge lock washer pair is arranged. The wedge lock washer pair is so embodied that the wedge lock washers are brought into engagement by the pressing of the nut against the end stop and produce a prestress torque, wherein torque for releasing the nut from the end stop is smaller, essentially by the prestress torque of the wedge lock washer pair, than the torque applied as the nut first pressed against the end stop.

Abstract: The invention relates to a torque limiter for an actuator including a screw (101), a nut mounted on said screw, an actuation tube (105) rigidly connected to the nut and means (109, 133) for rotating said screw, said limiter being characterized in that it includes an abutment (115, 110) capable of: preventing the rotation of said tube (105) by friction simply by an axial force exerted by said screw (101) onto said nut during the movement thereof; and enabling the rotation of said tube (105) when said nut arrives at an axial abutment of said screw beyond a predetermined torque threshold defined by the axial force.

Abstract: A linear actuator includes a motor, a movable unit, and a stroke control unit. The motor includes a spindle. The movable unit includes a worm gear and a rotary shaft. The worm is provided with annular spiral or helix teeth. The stroke control unit includes at least one transmission member and at least one micro switch. The at least one transmission member is engaged with and driven by the spiral or the helix teeth of the movable unit for synchronical rotation to activating or deactivating the micro switch. In this way, the linear actuator is simplified in structure and reduced in volume.

Abstract: A linear step motor can include: a motor housing fixedly mounted at an inner surface of a ring-shaped stator and formed with an opening; a rotor rotatably mounted at a space centrally formed at the stator; a cover member coupled to a bearing to open/close the opening; a nut shaft centrally arranged at the rotor, coupled to an outside of the cover member by passing through a shaft hole centrally formed at an inner ring of the bearing, coupled at a periphery by a magnet and formed with a female screw gear-combined with a lead screw member formed at an inner surface with a male screw; and a fixing unit integrally formed with the nut shaft and fixed to the bearing coupled to the cover member.

Abstract: In one arrangement, a motor assembly includes a housing defining a housing chamber, a stator disposed within the housing chamber, and a rotor assembly disposed within the housing chamber. The rotor assembly includes a spindle housing defining a spindle housing chamber extending along a longitudinal axis of the spindle housing and a set of magnets disposed about an outer periphery of the spindle housing and in proximity to the stator. The rotor assembly includes a ball nut cartridge disposed within the spindle housing chamber of the spindle housing and a securing mechanism configured to secure the ball nut cartridge to the spindle housing.

Abstract: Linear actuator comprising a housing (1) consisting of at least two parts (1 a, 1 b) a mounting console (2) a reversible motor (7) with a transmission (22), a spindle (5) which over the transmission is driven by the motor, a bearing (16) for embedding the spindle (5), a spindle nut (6) secured against rotation on the spindle, an outer tube (3) which surrounds the spindle, an activation element (4) telescopically mounted in the outer tube (3) and connected to the spindle nut (6), a front mounting (8) on the outer end of the activation element (4), a rear mounting (9) arranged in the housing. In the rear mounting (9) is a seat for the bearing (31) of the spindle. The motor (7), the transmission (22) and the outer tube (3) is secured to the console (2). The mounting console (2) is constructed as a separate element around which the two parts (1a, 1 b) of the housing is assembled and the mounting console (2) constitutes alone the bearing chassis of the actuator.

Abstract: A method and apparatus for locking an externally threaded member in place. An apparatus comprises a number of internally threaded members and a shape memory element associated with the number of internally threaded members. The number of internally threaded members is configured to engage the externally threaded member. Changing a baseline shape of the shape memory element to a modified shape either prevents or allows movement of the number of internally threaded members relative to the externally threaded member.

Abstract: An actuator includes a ball nut, a ball screw, and a ball screw stop. The ball nut is adapted to receive an input torque and in response rotates and supplies a drive force. The ball screw extends through the ball nut and has a first end and a second end. The ball screw receives the drive force from the ball nut and in response selectively translates between a retract position and a extend position. The ball screw stop is mounted on the ball screw proximate the first end to translate therewith. The ball screw stop engages the ball nut when the ball screw is in the extend position, translates, with compliance, a predetermined distance toward the first end upon engaging the ball nut, and prevents further rotation of the ball screw upon translating the predetermined distance.

Abstract: A method for producing a threaded nut (10, 26) of a screw drive, in particular of a ball screw (7, 24), which threaded nut (10, 26) has, on one axial end, a recess (45) which extends over a circumferential segment and which is open at the end side, wherein said recess (45) is delimited radially by a circumferential wall of the threaded nut (10, 26), and wherein said recess (45) is delimited axially by a base (54) formed on the threaded nut (10, 26), and wherein said recess (45) is delimited in the circumferential direction by a stop surface (47), which is formed on the threaded nut (10, 26), for a projection (44), produced according to the following steps: a blank is deformed in a deformation process by deformation of material so as to form the recess (45), wherein the base (54) and the stop surface (47) and the circumferential wall are integrally connected to one another.

Abstract: A telescopic actuator comprising a cylinder having a structure for coupling the cylinder to a first external element a rod mounted to slide telescopically in the cylinder along a sliding axis and including a structure for coupling it to a second external element and a lead screw mounted to rotate in the cylinder about the sliding axis and extending inside the rod to co-operate with a nut secured to the rod, such that rotating the lead screw causes the rod to slide. There also is a drive structure for driving the lead screw in rotation and a retention structure for axially retaining the lead screw. The retention structure holds a bearing of the lead screw captive in an axial direction and is arranged to retain the bearing of the lead screw with axial clearance suitable for absorbing movements imparted to the rod relative to the cylinder.

Abstract: A gear motor having a safety mechanism includes a motor body, a speed reduction mechanism, a transmission mechanism, and a touch switch. The speed reduction mechanism includes a worm and a worm wheel drivingly engaged with the worm. The transmission mechanism includes a base fixed to the speed reduction mechanism, a lead screw rod pivotally connected to the base and rotatably driven by the worm wheel, and a nut threadedly connected to the lead screw rod. The touch switch is electrically connected to the motor body and provided aside the lead screw rod, thereby stopping the motor body when the nut contacts the touch switch. Thus, the gear motor not only controls the operation of the driven mechanism, but also allows various driven mechanisms to be mounted thereon. The assembled volume of the gear motor and the driven mechanism is reduced.

Abstract: An electromotive linear drive with a housing that is equipped with a drive unit, the output member of which is designed as linearly movable spindle nut that is operatively connected to a connecting part for connecting to another component. The spindle nut is engaged with the connecting part in the normal operating state by a first coupling part and a second coupling part engaged with said first coupling part, and the driving connection can be decoupled by a movement of at least one coupling part in the longitudinal direction of the spindle.