A linear motion device and a linear motion device component are provided. The linear motion device includes a screw, a nut, an end cover, and a scrape plate. The nut is fitted over the screw, and a spiral outer groove of the screw and a spiral inner groove of the nut correspond to each other to form a ball groove. The end cover is fixed to the nut. A first through hole portion is defined through the end cover and corresponds to the nut. An engaging groove is arranged on a first surface of the end cover. The scrape plate is assembled with the end cover. A second through hole portion is defined through the scrape plate and corresponds to the nut. An engaging member is arranged on the scrape plate and assembled with the engaging groove.

A ball screw drive includes two screw drive parts (3, 4), namely a lead screw (3) and a nut (4). The ball screw drive also includes a deflection element (6) for the individual deflection of balls (5) is inserted into a recess (7), formed by one of the screw drive parts (3, 4), such that a gap (16) is formed between the base (15) of the recess (7) and the deflection element (6), and such that lateral contact surfaces (17) of the deflection element (6) which are located next to the recess (7) rest on the screw drive part (3, 4).

An adjusting drive for a steering column for a motor vehicle may include a threaded spindle with an external thread that engages in a spindle nut and a drive unit that is coupled to the threaded spindle or the spindle nut such that the threaded spindle and the spindle nut are able to be rotatably driven relative to one another by overcoming a screw resistance. To permit an optimized adjustment over the entire adjusting region, the threaded spindle includes at least one actuator portion and at least one transition portion. The transition portion is configured such that the screw resistance of the spindle nut is lower in the transition portion than in the actuator portion.

A screw mechanism part (1) of a screw mechanism, which screw mechanism part is formed by a lead screw or a threaded nut (15) of the screw mechanism, has a machine part (3), which is mounted in a rotationally fixed manner on the screw mechanism part (1), for transmitting a torque. The machine part (3) and the screw mechanism part (1) have an axial overlap region (a) in which the pressing section (4) formed on the inner circumference of the machine part (3) is pressed onto external teeth or knurling (5) of the screw mechanism part (1). Inside the overlap region (a) there is formed a circumferential groove (6) which is situated axially adjacent to the external teeth or knurling (5). Material of the machine part (3) which is displaced during the pressing on is pushed into the circumferential groove (6).

Embodiments of an actuator assembly for a power tailgate system are disclosed. The actuator assembly includes an actuator having a housing, a guide with a first end extending from the housing and a second end opposite the first end, and a slide coupled to the guide so as to be movable with respect to the guide second end. The actuator assembly also includes a bellows having a first end attached to the guide first end, a second end opposite the first end and attached to an end of the slide, and a body extending between the first and second ends. At least one hole is formed in the bellows proximate the bellows second end and enables fluid communication between an interior of the bellows and an exterior of the bellows. The bellows may expel moisture collected therein during operation of the actuator.

To provide an actuator with which side face covers can be easily attached and detached without damaging a top face cover, and workability is enhanced, and cost can be reduced without upsizing the actuator, by fastening and fixing the actuator to a base stand from above the actuator in a state in which the side face covers are removed. In an actuator having a long screw shaft with a first roller rolling groove in a spiral shape formed on an outer periphery, an inner block where a screw hole through which the screw shaft penetrates is formed, and which has a second roller rolling groove that is formed on an outer periphery to be parallel with the screw shaft, an outer rail that faces the second roller rolling groove, and a plurality of rollers that are respectively arranged between the screw shaft and the inner block, and between the inner block and the outer rail, side face covers that are laid between a pair of end portion members that are installed at both end portions of the screw shaft, and a top face cover that is disposed to close an opening portion that is formed between the side face covers and is opened parallel with the screw shaft are included, the side face covers each includes a top plate that is formed to be parallel with the top face cover, and a side plate that hangs from one end of the top plate, and the end portion members each has posture retaining device that contacts a corner portion of the top plate and the side plate.

Provided is a water detection system and an electric power steering apparatus capable of preventing or reducing complication of an apparatus with respect to a water detection system including a water detection element and a determination circuit positioned separately from each other. The water detection system includes a transmission-side unit provided in an apparatus mounted on a vehicle of the electric power steering apparatus and including a water detection element, and a reception-side unit spaced apart from the transmission-side unit and including a determination circuit. The transmission-side unit wirelessly transmits an output signal of the water detection element, and the reception-side unit receives the output signal wirelessly transmitted from the transmission-side unit.

Provided are a nut, an attachment for nut and a screw shaft, which are fitted to a coating material coating device or a soldering device and can change a fixed position of the nut easier than that of a convention example even if any adhered matters generated when each device is used for a long time are fixed, and a soldering device using the same. The nut 10 screws on to the screw shaft 2 having a predetermined length. The nut 10 is provided with a non-meshing part 11 composed of a notch 12 that is formed parallel to a movement direction thereof by cutting off screw threads and a flange portion 13, which has connecting holes 14 for connecting another member. Under such a configuration, by forward and/or backward movement of the nut 10, the notch 12 functions as if it scraps the fixed matters 6.

A wiper and scraper assembly for a linear motion assembly has a wiper and a scraper constructed from separate pieces of material. The wiper has a width extending between opposite sides with an opening extending through the opposite sides, with a first helical thread of the wiper being received in an external groove of a screw of the linear motion assembly. The scraper is disposed in the opening of the wiper, and has a second helical thread received in the external groove of the screw. The wiper has at least one lubrication return plow extending into one of its opposite sides, with the lubrication return plow facing axially inwardly into a nut of the linear motion assembly. The wiper has at least one debris ejection plow formed in the first helical thread, with the debris ejection plow facing axially outwardly from the ball nut.

A ballscrew assembly comprises: a nut having a nut body with a radially inner surface and a helical groove formed on the radially inner surface; a screw shaft disposed within the nut, the screw shaft comprising a radially outer surface and a groove formed on the outer surface, the groove on the screw shaft cooperating with the groove on the nut to define a helical raceway for a plurality of balls; at least one lubricant reservoir formed in the nut body at or adjacent to an end of the helical raceway; and a lubricant passage extending through the nut body and fluidly coupled to the at least one lubricant reservoir; wherein the lubricant reservoir is fluidly linked to the helical groove of the nut via the lubricant passage.