An mechanical energy harvesting system includes a base seat unit, a rotating shaft device, and a driving device. The base seat unit includes first and second seat bodies. The rotating shaft device is rotatably mounted to the first seat body. The driving device is disposed on the base seat unit and includes at least one driving unit sleeved on the rotating shaft device for driving the rotating shaft device to rotate and thus generate rotational kinetic energy, and at least one transmission unit connected between the second seat body and the driving unit and configured to drive the rotating shaft device to rotate when the second seat body swings relative to the first seat body, so as to generate the rotational kinetic energy.

An input cam having a recessed track for establishing a desired dwell time for a plurality of rotatable permanent magnets and an output cam having a recessed track for maximizing the harnessing of linear motion energy and to apply the harnessed energy to a rotary output are provided to improve the efficiency of a magnetic transmission.

A shift-type multi-phase-shifter drive transmission device includes a drive device (3), a shifting mechanism, multiple angle adjustment mechanisms and multiple ruler mechanisms. When the shift-type drive transmission device works, the drive device (3) firstly drives a shifting rack (11) of the shifting mechanism to move to a position which is corresponding to one of the angle adjustment mechanisms, a shifting bulge (111) on the shifting rack (11) is against a driving lever (13) for engaging an active clutch gear (16) with a passive clutch gear (17) of the corresponding angle adjustment mechanism, so as to further drive a transmission screw (19), thus a transmission nut (20) on the transmission screw (19) implements the reciprocating linear motion. The shift-type drive transmission device is able to drive multiple phase shifters through one drive device (3) to perform angle adjustment, which reduces an amount of the drive sources and effectively decreases cost.

The present invention discloses a transmission device used for expanding monitors, comprising the body, and a combination of at least a first monitor, a second monitor and an actuation module that can be installed thereon. The actuation module can drive the second monitor to move reciprocally on a reference axis X; and the second monitor is provided with a drive module to drive the second monitor to move reciprocally on a reference axis Y perpendicular to the reference axis X, which jointly provide a mechanism, under which an expansion and combination of the screen of the first monitor and the screen of the second monitor (in the same planimetric position) and/or retraction thereof are enabled.

An electric actuator includes a motor, a speed reduction mechanism, a first bearing, and a bearing holder. The speed reduction mechanism has external and internal gears, an output flange that is positioned at one side in an axial direction from the external gear, and a plurality of projecting portions that project in the axial direction from one of the output flange and the external gear toward the other. The plurality of projecting portions are inserted into a plurality of first bore portions disposed along a circumferential direction, respectively. The bearing holder has a cylindrical circumferential wall positioned at an outer side in a radial direction of the first bearing and a support wall supporting the first bearing from the other side in the axial direction. A position adjustment mechanism configured to be capable of moving the support wall in the axial direction is arranged in the bearing holder.

A hand tool with a mechanical linear drive mechanism coupled to a work implement. The drive mechanism includes a roller screw with a torque tube connected to a roller screw's nut body. The roller screw includes a fixed outer race, a rotating set of rollers axially aligned inside the outer race, a cylindrical nut body located inside the set of rollers, a plurality of inner rollers axially aligned and inside the nut body, a threaded shaft axially aligned and inside the inner rollers, and a torque tube axially aligned inside the inner rollers. The torque tube is connected to a multiple speed gearbox which includes a primary motor coupled to a carrier gear with three planet gears. Disposed around the planet gears is an outer ring gear. Coupled to the outer ring gear is a secondary motor which when activated causes the ring gear to rotate in the opposite direction of the planet gears.

A hand tool with a mechanical linear drive mechanism coupled to a work implement. The drive mechanism includes a roller screw with a torque tube connected to a roller screw's nut body. The roller screw includes a fixed outer race, a rotating set of rollers axially aligned inside the outer race, a cylindrical nut body located inside the set of rollers, a plurality of inner rollers axially aligned and inside the nut body, a threaded shaft axially aligned and inside the inner rollers, and a torque tube axially aligned inside the inner rollers. The torque tube is connected to a multiple speed gearbox which includes a primary motor coupled to a carrier gear with three planet gears. Disposed around the planet gears is an outer ring gear. Coupled to the outer ring gear is a secondary motor which when activated causes the ring gear to rotate in the opposite direction of the planet gears.

The present invention discloses a transmission device used for expanding monitors, comprising the body, and a combination of at least a first monitor, a second monitor and an actuation module that can be installed thereon. The actuation module can drive the second monitor to move reciprocally on a reference axis X; and the second monitor is provided with a drive module to drive the second monitor to move reciprocally on a reference axis Y perpendicular to the reference axis X, which jointly provide a mechanism, under which an expansion and combination of the screen of the first monitor and the screen of the second monitor (in the same planimetric position) and/or retraction thereof are enabled.

Provided is an electric actuator, comprising: a driving motor (2); a motion conversion mechanism (6) configured to convert a rotary motion of the driving motor (2) to a linear motion in an axial direction parallel with an output shaft (2a) of the driving motor (2); and a transmission gear mechanism (5) configured to transmit a driving force from the driving motor (2) to the motion conversion mechanism (6), wherein a double-row bearing (24) configured to support the motion conversion mechanism (6) is arranged on an opposite side of the driving motor (2) with respect to the transmission gear mechanism (5), and wherein a relationship of L<Dm/2+Db/2 is satisfied, where Dm is an outer diameter of the driving motor (2), Db is an outer diameter of the double-row bearing (24), and L is an axis-to-axis distance (L) between the driving motor (2) and the motion conversion mechanism (6).

Provided is an electric actuator, comprising: a driving motor (2); a motion conversion mechanism (6) configured to convert a rotary motion of the driving motor (2) to a linear motion in an axial direction parallel with an output shaft (2a) of the driving motor (2); and a transmission gear mechanism (5) configured to transmit a driving force from the driving motor (2) to the motion conversion mechanism (6), wherein a double-row bearing (24) configured to support the motion conversion mechanism (6) is arranged on an opposite side of the driving motor (2) with respect to the transmission gear mechanism (5), and wherein a relationship of L<Dm/2+Db/2 is satisfied, where Dm is an outer diameter of the driving motor (2), Db is an outer diameter of the double-row bearing (24), and L is an axis-to-axis distance (L) between the driving motor (2) and the motion conversion mechanism (6).