An electric powered recirculating ball assembly includes a shaft having a plurality of sector teeth extending therefrom. The assembly also includes an eccentric sleeve defining a bore containing a portion of the shaft, the eccentric sleeve comprising an upper sleeve segment and a lower sleeve segment that are separate components, the eccentric sleeve defining an opening that the sector teeth extend through.

A fine pitch adjuster that includes a housing, a wheel gear positioned within the housing and coupled to a ball stud, wherein rotation of the wheel gear provides inward and outward longitudinal translation of the ball stud relative to the housing, and a clutching worm input drive including, an inner drive sleeve having a shaft portion and a head portion, the shaft portion including a plurality of sleeve slots formed therein and a plurality of engagement ribs, and an outer worm gear sleeve having worm gear threads, the worm gear threads coupled at least indirectly to the wheel gear, and an inner chamber, the outer worm gear sleeve including a plurality of grooves extending longitudinally along the inner chamber for mating engagement with the plurality of engagement ribs, wherein rotation of the inner drive sleeve provides clutchable engagement with the outer worm gear sleeve to rotate the wheel gear.

A posture correction mechanism includes a carrier attached to a housing, and a gearwheel rotatably attached to the housing, the gearwheel includes a screw hole engaged with a screw which is moveable up and down relative to the housing for driving the gearwheel to rotate relative to the housing, two shafts are rotatably attached to the carrier and each has an arm rest, two gears are rotatably attached to the carrier and engaged with the gearwheel, the gears are connected to the shafts for allowing the shafts to be driven by the gearwheel to rotate relative to the carrier and for allowing the arm rests to be rotated toward or away from the user.

A fine pitch adjuster that includes a housing, a wheel gear positioned within the housing and coupled to a ball stud, wherein rotation of the wheel gear provides inward and outward longitudinal translation of the ball stud relative to the housing, and a clutching worm input drive including, an inner drive sleeve having a shaft portion and a head portion, the shaft portion including a plurality of sleeve slots formed therein and a plurality of engagement ribs, and an outer worm gear sleeve having worm gear threads, the worm gear threads coupled at least indirectly to the wheel gear, and an inner chamber, the outer worm gear sleeve including a plurality of grooves extending longitudinally along the inner chamber for mating engagement with the plurality of engagement ribs, wherein rotation of the inner drive sleeve provides clutchable engagement with the outer worm gear sleeve to rotate the wheel gear.

Medical devices in accordance with various embodiments of the present invention employ one or more coaxial screw gear sleeve mechanisms. In various embodiments, coaxial screw gear sleeve mechanisms include a post with a threaded exterior surface and a corresponding sleeve configured to surround the post, the corresponding sleeve having a threaded interior surface configured to interface with the threaded exterior surface of the post and a geared exterior surface. A drive mechanism can be configured to interface with the geared exterior surface of the sleeve, causing the device to expand.

A head-mounted display device includes a housing, a pair of display modules, a pair of cameras, a driving module and a control system. The housing can cover eyeballs of the user. The cameras are respectively fixed to the display modules to capture images of the eyeballs. The driving module is coupled to the display module to move the display modules relative to the housing. The control system is electrically connected to the of cameras and the driving module. An adjustment method is applicable to the above-mentioned head-mounted display device. An image of the corresponding eyeball is captured by one of the cameras. The control system calculates a deviation between a center of a pupil of the corresponding eyeball and a center of the corresponding image according to the image. The control system controls the driving module to move the display modules relative to the housing according to the deviation.

An electronic parking brake device may include: a plate part having a brake shoe rotatably mounted thereon; a housing part mounted on the plate part and configured to guide hydraulic pressure; a motor part mounted on the housing part, and driven when power is applied thereto; a piston part mounted on the housing part, and moved by hydraulic pressure so as to operate the brake shoe; and an operating part embedded in the housing part, and driven by the motor part so as to move the piston part.

An electronic device is provided. The electronic device includes a function module, a body, and a motor assembly. The body includes an accommodation space for accommodating the function module. The motor assembly includes a drive motor, a gear, a rotation output shaft, a displacement mechanism, and a latch. The drive motor includes a shaft. The gear is fixedly attached to the shaft. The rotation output shaft includes a gear teeth portion. The gear teeth portion is coupled to the gear. The rotation output shaft is connected to the function module and is configured to drive the function module to rotate. The displacement mechanism synchronizes with the shaft and is separated from the rotation output shaft. The displacement mechanism includes a linear motion component. The latch is connected to the linear motion component, and is configured to engage the function module.

An actuator gearbox includes a drive shaft including a plurality of gear linkages that are spaced apart along the drive shaft, and a plurality of output shafts adjacent respective ones of the plurality of gear linkages. Each of the gear linkages includes a fixed gear coupled to one of the plurality of output shafts and a moving gear that is slideably coupled to the drive shaft. A bias spring is coupled to the moving gear to urge the moving gear out of engagement with the fixed gear. The mechanical switch moves the moving gear into engagement with the fixed gear on the output shaft adjacent the linkage to thereby cause the output shaft to rotate in response to rotation of the drive shaft.

An electromotive furniture drive includes a drive motor including an output shaft, a lift spindle arranged in a common plane with the output shaft, and a gear assembly configured to couple the output shaft of the drive motor to the lift spindle. The gear assembly includes an intermediate shaft which intersects the common plane between the lift spindle and the output shaft.