33results about How to "Large driving stroke" patented technology

The invention is a conjugate imaging-based multi-deformable mirror sires combined wave front corrector, comprising at least two same wave front correctors and corresponding 4f optical system, where the adjacent wave front correctors are interconnected by the 4f optical system to compose a combined wave front corrector and make each wave front corrector located in the optical conjugate imaging position, i.e. each wave front corrector is placed on the front focal surface and rear focal surface of the 4f optical system in order, the wave front corrector can be a deformable mirror using piezoelectric or electrostrictive ceramic as driver and separately driving continuous mirror surface, or a double-voltage deformable mirror, a deformable mirror made by microelectronic mechanical system (MEMS) technique, etc; the 4f optical system adopts a lens-composed refracting system or a reflecting system composed of off-axis parabolic mirror. And the invention has simple structure, high light energy utilization ratio, and can effectively increase wave front correction travel and provides an easy-to-implement method for improving the wave front correcting effect of the self-adapting optical system by using the existing deformable mirror manufacturing technique.

The invention discloses a two-dimensional rapid deflection table combining a sensing unit with a constraint element and a method. The deflection table comprises an X axis angle displacement sensing measurement device and a Y axis angle displacement sensing measurement device which are located between a micro-angle swinging platform and a base and further comprises four linear voice coil motors, and a double-axis flexible hinge is arranged on the lower surface of the micro-angle swinging platform. The X axis angle displacement sensing measurement device and the Y axis angle displacement sensing measurement device each comprise a rigid support, a pair of flexible metal beams which extend out relative to the two sides of the rigid support and mass blocks which are fixedly connected with the tail ends of the flexible metal beams correspondingly. The positions, nearby the root, of the upper surface and the lower surface of each flexible metal beam are provided with electric resistance strain gauges in an attachment mode. The first voice coil motor and the third voice coil motor are oppositely arranged with the same specification and form a first actuator set. The second voice coil motor and the fourth voice coil motor are oppositely arranged with the same specification and are perpendicular to the first actuator set in a crossing mode. The voice coil motors are adopted for driving to achieve large angular travel, the constraint rigidity of the deflection table is improved through the flexible metal beams, and the mechanism stability is improved; and meanwhile, the deflection table serves as the sensing unit to perform real-time measurement of double-axis deflection angles in a strain feedback mode.

The invention discloses a micromechanical electrostatic driven linear comb structure and relates to the technical field of micromechanical electrostatic drive. The structure comprises n groups of samelinear combs, wherein the n groups of linear combs are horizontally and uniformly distributed on a horizontal side wall of an external device; each group of linear combs comprise a static comb and adynamic comb; the static comb and dynamic comb are staggered E-shaped structures. Under external electrostatic drive, the dynamic comb carries out linear motion close to or away from the static comb along the horizontal side wall of the external device. When the static comb matches the dynamic comb, a first movable electrode stretches into a position between a first fixed electrode and a second fixed electrode, a second movable electrode stretches into the position between the second fixed electrode and a third fixed electrode, and a third movable electrode is set at the outer side of a thirdfixed electrode. According to the structure, under a vacuum environment and a drive voltage the same as those of a conventional technology, relatively long drive travel is obtained, and technologicaldifficulty is not increased.

The invention relates to an optical anti-vibration motor, which comprises a first base body, a second base body capable of moving relative to the first base body and a shell covering the peripheries of the first base body and the second base body, wherein a first magnet is installed on the first base body, a first coil is installed at the position, corresponding to the first magnet, of the second base body, the first coil is configured to be capable of generating driving force along an x axis and/or a y axis perpendicular to the x axis so as to make the first base body and the second base body generate relative motion, a first magnetic piece is further installed on the first base body, and is located on the side, opposite to the first magnet, of the first coil, and the relative positions of the first magnet and the first magnetic piece are always relatively fixed, so that the driving force can be increased through the arrangement of the first magnetic piece, the magnetic attraction force between the first magnetic piece and the first magnet does not affect the movement of the second base body, the impedance of the generated magnetic attraction force to the driving force can be avoided, and the motor is ensured to have relatively large driving force and driving stroke.

The invention provides a micromechanical electrostatically driven curved comb tooth structure, relating to the technical field of micromechanical electrostatic driving. The micromechanical electrostatically driven curved comb tooth structure comprises n identical curved comb tooth groups, wherein the n curved comb tooth groups are uniformly distributed at an outer edge of a device with arc-shapedexterior, each curved comb tooth group comprises static comb teeth and dynamic comb teeth, the static comb teeth and the dynamic comb teeth are in staggered cooperation and take on an F-shaped hammerstructure, under external electrostatic driving, the dynamic comb teeth moves close to or away from the static comb teeth in an curved way with the center of the device with arc-shaped exterior as a center of a circle, when the static comb teeth and the dynamic comb teeth cooperate, a first moving electrode stretches between a first fixed electrode and a second fixed electrode, and a second movingelectrode is outside the second fixed electrode in a radial direction. Under the same vacuum environment and driving voltage as the traditional technology, mechanical motion displacement is increased, and the processing difficulty is not raised.

The invention discloses a bathing device for a bedridden patient, and belongs to the technical field of medical instruments. The bathing device comprises a bathing frame, a movable bed frame, a sprayer and a power mechanism; the bathing frame is provided with a bathing area into which the movable bed frame extends; the sprayer is arranged on the power mechanism; the power mechanism is used for driving the sprayer to move into the bathing area; and the sprayer is unfolded or reset along with movement of the power mechanism. The movable bed frame is arranged, the bathing frame is arranged, the bathing area is arranged in the middle of the bathing frame, the sprayer is arranged on the bathing frame, and when the bedridden patient is bathed, only a bed board of the movable bed needs to stretch into the bathing area, the power mechanism drives the sprayer to move, so that the bedridden patient is flushed, and the patient is not difficult to bath any more; and the device is very convenient to use, the labor intensity of medical staff is greatly reduced, meanwhile, the body health of a patient is guaranteed, the sprayer can be stored when not used, the situation that the sprayer drips water to pollute the ground is avoided, and meanwhile the space occupied by the whole device is reduced.

The invention discloses a driving structure based on an eccentric shaft. The driving structure comprises a base body with an inner cavity, a driven part movably assembled in the inner cavity and an eccentric shaft in linkage fit with the driven part, the eccentric shaft comprises a first rotating shaft part and a second rotating shaft part which are coaxially arranged, an eccentric shaft part which is arranged between the first rotating shaft part and the second rotating shaft part and eccentrically arranged is further included, the diameter of the first rotating shaft part is larger than thediameter of the second rotating shaft part, a first shaft hole penetrating through the interior and the exterior is formed in the side wall of one side of the inner cavity of the base body, a second shaft hole is formed in the position, opposite to the first shaft hole position, of the other side wall of the inner cavity, the diameter of the first shaft hole is larger than that of the second shafthole, the first rotating shaft part is rotatably matched with the first shaft hole, the second rotating shaft part is rotatably matched with the second shaft hole, and the eccentric shaft part is inlinkage fit with the driven part. The base body forming of the driving structure is easier, the production cost is effectively reduced, the eccentric shaft and the base body can be more easily mounted, and the assembling efficiency can be greatly improved.

The invention discloses a driving mechanism for a lifting type buried transformer. The lifting type buried transformer comprises a bearing platform arranged in a pit in a lifting mode and a transformer substation arranged on the bearing platform. The driving mechanism includes a power cylinder, a first driving wheel, a second driving wheel and a driving strip, wherein the power cylinder is arranged in the pit and is positioned on one side of the bearing platform; the first driving wheel is rotatably arranged at an end part of a piston rod of the power cylinder; the second driving wheel is rotatably arranged on an inner side wall of the pit; and the driving strip is in transmission connection with the first driving wheel and the second driving wheel, two ends of the driving strip are connected to the bearing platform and the piston rod respectively, and the driving strip can sequentially wind the first driving wheel and the second driving wheel. According to the driving mechanism, the power cylinder is used for driving lifting, and besides a telescopic stroke of the power cylinder, the driving stroke is increased through cooperation of the first driving wheel, the second driving wheel and the driving strip so that the accumulated driving stroke is matched with the lifting stroke of a transformer substation, and the transformer substation can be smoothly lifted to the ground.

The present invention discloses an SMA actuator, and also discloses a camera module having the SMA actuator and an electronic device having the camera module. The SMA actuator includes: an SMA wire that is contractible when energized; and an actuating body of a quadrilateral structure, wherein the four edges of the actuating body are formed by connecting four elastic supporting arms, the two endsof each elastic supporting arm are fixedly connected with one ends of the other two elastic supporting arms respectively, the two opposite angle parts of the actuating body fix the two ends of the SMAwire, and the other two opposite angle parts of the actuating body fix and are connected with a driven piece. The SMA wire clamped at the diagonal positions divides the actuating body of the quadrilateral structure into an upper triangular part and a lower triangular part, that is, every two elastic supporting arms and the SMA wires form a triangular structure, and the stroke capable of driving an object to move is longer.

The invention discloses a unidirectional driving pedal turnover device. The device includes a base, a foot pedal device, a swing plate and a transmission device; the base comprises a bottom plate and a side plate, the swing plate is hinged to the front side of the bottom plate of the base, one end or two ends of the swing plate is/are provided with one or two brake cable baffle seats, the outer side of the side surface of the side plate of the base is fixedly connected with a housing, the rear end of the upper portion of the housing is internally provided with a brake tube seat, the bottom of the brake tube seat is provided with a cable hole, and the inner side of the housing is provided with a swing plate track receding groove. A cushion rotary shaft seat of a water closet is used for fixing the base, the housing is used for closing the side plate of the base and the end of the swing plate, so that the end of base and the end of the swing plate are hidden, the device is neat in appearance, smooth in streamline shape and high in strength, and the practicability and the ornamental value are improved.