103results about How to "Reduce backlash" patented technology

A rack shaft support device includes: a rack shaft support member that is accommodated inside a retention hole formed in a housing so as to slide in an axial direction of the retention hole, and slidably supports a rack shaft; a sealing member fixed to an inlet port of the retention hole; an intermediate member that is interposed between the rack shaft support member and the sealing member; a torsion spring that couples the sealing member and the intermediate member; a cam mechanism that converts a rotational force of the intermediate member induced by untwisting of the torsion spring to a force by which the intermediate member pushes the rack shaft support member; an opposing portion that opposes a rear surface of the rack shaft support member; and an annular elastic member that is interposed between the rear surface of the rack shaft support member and the opposing portion.

A mechanical interface for providing high bandwidth and low noise mechanical input and output for computer systems. A gimbal mechanism includes multiple members that are pivotably coupled to each other to provide two revolute degrees of freedom to a user manipulatable about a pivot point located remotely from the members at about an intersection of the axes of rotation of the members. A linear axis member, coupled to the user object, is coupled to at least one of the members, extends through the remote pivot point and is movable in the two rotary degrees of freedom and a third linear degree of freedom. Transducers associated with the provided degrees of freedom include sensors and actuators and provide an electromechanical interface between the object and a computer. Capstan band drive mechanisms transmit forces between the transducers and the object and include a capstan and flat bands, where the flat bands transmit motion and force between the capstan and interface members. Applications include simulations of medical procedures, e.g. epidural anesthesia, where the user object is a needle or other medical instrument, or other types of simulations or games.

A problem of the invention is to provide a reduction device at low cost capable of considerably alleviating a restriction on a range of operating each shaft of a robot by providing a communication hole at a center portion and wiring a wire-like member therein while using a main bearing having an optimum load capacity. According to the invention, in a reduction device of a rotating shaft (first shaft) having a large gear a position of which is fixed to a robot base and a small gear brought in mesh with the large gear and axially supported in a rotating barrel portion, the large gear and the small gear are arranged at a vicinity of a rotational plane of a second shaft (front/rear shaft), further, in the reduction device of the rotating shaft (first shaft) having a small gear axially supported by a robot base and a large gear which is brought in mesh with the small gear and a position of which is fixed to a rotating barrel portion, a large gear and a small gear are arranged at a vicinity of the rotational plane of the second shaft (front/rear shaft).

A mobile and web-enabled method provides oversight used to control posts and tweets to social media sites such as TWITTER, FACEBOOK and TUMBLR. Using a collaborative moderation approach which enables a user selected jury of friends, parents or colleagues to view, recommend edits to, and ultimately approve or deny the posts, the method is used to monitor, manage and prevent inappropriate content or incorrect posts before they go live. The collaborative moderation approach utilizes different rules established by the user that determine when and if a post will be approved. The method allows any person, organization or business to proactively manage the online reputation and control the brand of the user before damage is caused by an offending social media post. In addition, a third party can be designated to initiate posts on behalf of the user.

The invention discloses a line-up and rotation method, device and system for goods shelves, and relates to the field of logistics automation. The line-up and rotation method for the goods shelves comprises the following steps of: lining up and scheduling carrying tools for carrying the goods shelves while distributing carrying tasks; according to the order requirements, planning paths for carryingthe goods shelves by the carrying tools for the carrying tools, and regulating operating paths of the carrying tools in real time; performing real-time detection on a surrounding environment in whichthe goods shelves are located from carrying task distribution to carrying task accomplishment; and rotating the goods shelves if the surrounding environment in which the goods shelves are located issuitable for rotating. Lining up and scheduling are expanded to the whole area, so that the defect that a fixed line-up area only can limited number of robots is overcome; and path rotation points areflexibly and dynamically set, so that the defect that circulation is poor as a rotation area is fixed is overcome, and therefore, goods shelf carrying efficiency is improved.

An imaging apparatus is disclosed that includes a carriage that moves back and forth along the main scanning direction, plural recording heads mounted on the carriage that discharge recording liquid, a guide that guides the carriage in the main scanning direction, a power source and a drive pulley that drive the carriage to move in the main scanning direction, a driven pulley that transmits the drive power from the power source to the carriage, and a motion transmitting element that is arranged over the drive pulley and the driven pulley. The carriage is forced toward the guide by a tension generated by deflecting an extending direction of the motion transmitting element.

A portable information handling system rotationally couples first and second housing portions with a multi-axis hinge and disposes a flexible display over the first and second housing portions supported by a first sliding support over the first housing portion and a second sliding support over the second housing portion. An actuator interfaced with the multi-axis hinge translates hinge axis rotation into lateral movement of the sliding supports to adjust sliding support positions relative to flexible display positions as the flexible display folds around the hinge inner circumference.

A one-way or selectable clutch with multiple circumferential rows of ratchet elements is disclosed. The clutch may include two or more rows of ratchet elements extending between two or more races. The device may be either a one-way clutch or a selectable mechanical clutch, and afford the benefits of reduced backlash and multiple modes of operation. Those modes may include free-wheel/overrun in both clockwise and counterclockwise directions, lock/transmit torque in both directions, lock in clockwise and overrun in counterclockwise directions, and lock in counterclockwise and overrun in clockwise directions.

The invention relates to a transmission device capable of eliminating a transmission clearance and a clearance eliminating method thereof. The transmission device at least comprises a worm rod and a worm gear which are arranged in a box body, wherein the axes of the worm rod and the worm gear are on different planes; detachable worm teeth which can be engaged with worm threads of the worm rod are arranged on the worm gear in the peripheral direction at intervals; the worm gear comprises at least two discs which are attached to each other in the axial direction; rolling bodies distributed in the peripheral direction at intervals are separately arranged at the radial outer sides of the at least two discs; at the condition that the worm rod and/or the worm gear rotate around the axis, the worm threads are engaged with the worm teeth limited by the rolling bodies, which are adjacent to each other in the axial direction and have inclusion angles, of the at least two discs; and the rolling bodies, at the two sides of the axis of the worm rod, of the worm teeth separately revolve in a manner that the rolling bodies can be always in linear contact with the teeth surfaces at the two sides of the worm threads through the adjustment of the inclusion angles and the connecting lines of the axes of every two rolling bodies are crossed with the axis of the worm rod in a non-perpendicular manner.

A device for grinding and/or polishing of, in particular, precision-optical spherical lens surfaces has a machine frame, a tool spindle for rotational drive of a tool about a tool axis of rotation and a workpiece spindle for rotational drive of a workpiece about a workpiece axis of rotation. The tool spindle and workpiece spindle are capable of axial relative adjustment in first and second directions extending perpendicularly to one another and in addition pivotable about a pivot axis in a pivot plane relative to one another. Equipment for cross-grinding adjustment is provided, which has an adjusting mechanism to position the workpiece spindle in a third direction extending perpendicularly to the first and second directions. A clamping mechanism activatable independently of the adjusting mechanism serves the purpose of fixing the workpiece spindle, once positioned, with respect to the machine frame.

The invention discloses an electronic-control anti-backlash gear pair. The electronic-control anti-backlash gear pair comprises a first gear, a second gear and a third gear. The second gear and the third gear are coaxial and parallel and are meshed with the first gear, and the freedom degree of relative rotation in the circumferential direction exists between the second gear and the third gear. The electronic-control anti-backlash gear pair further comprises an electronic-control anti-backlash system composed of an electronic driving block and a control unit, wherein the electronic driving block is used for driving the second gear and the third gear to relatively rotate to eliminate meshed backlash between the second gear and the first gear and between the third gear and the first gear during electronic deformation. According to the electronic-control anti-backlash gear pair, when the backlash needs to be adjusted, electronic deformation materials are electrified to be deformed, a double gear formed by the second gear and the third gear relatively rotates to eliminate the backlash between the second gear and the first gear meshed with the second gear and between the third gear and the first gear meshed with the third gear, the gear backlash and the return difference can be accordingly eliminated or reduced in real time, cost is low, the structure is simple, accessory equipment such as a motor is not needed, the occupied space is small, driving energy is reduced, the transmission error during direction changing is reduced, and operation and control are simpler and more convenient; as the original mode that the backlash is eliminated through mechanical force of a power source is not adopted, controllability and accuracy are high, and the electronic-control anti-backlash gear pair is suitable for occasions with the requirements for the high accuracy.

The invention relates to a greenhouse having an air discharge port. The greenhouse comprises a greenhouse body, a plastic film covering the greenhouse body, the air discharge port and an air discharge control device and is characterized in that the air discharge port is arranged in the plastic film and is covered by the air-discharge plastic film; one end of the air-discharge plastic film is fixed with the plastic thin film and the other end thereof is a free end; the free end is provided with a connecting rod; and under control of the air discharge control device, the air-discharge plastic film slidably opens or seals the air discharge port. Two driven wheels are utilized with one driven wheel wounding around a rope and the other being in the free state such that the rope can keep uniformly winding as always. The air discharge port is smoothly and uniformly opened and closed.

A one-way or selectable clutch with multiple circumferential rows of ratchet elements is disclosed. The clutch may include two or more rows of ratchet elements extending between two or more races. The device may be either a one-way clutch or a selectable mechanical clutch, and afford the benefits of reduced backlash and multiple modes of operation. Those modes may include free-wheel/overrun in both clockwise and counterclockwise directions, locked/transmit torque in both directions, locked in clockwise and overrun in counterclockwise directions, and locked in counterclockwise and overrun in clockwise directions.

An automatic switching device is provided to realize miniaturizing, lightweighting and silencing the automatic switching device of toilet-seat and toilet-cover. The automatic switching device (10) comprises: motor (13) mounted on rotation axis (12) with two or more worm gears (11); output axis (14) for switching toilet-seat and toilet-cover; reduction gear unit (15) for decelerating the revolution of worm gears (11) and transfering it to output axis (14). The reduction gear unit (15) is composed of two plates (19,20) for grasping three supporting parts (16) and being in point-against-back arrangement; and a number of gear set (21) between the plates (19,20). A first helical gear (22) for engaging with worm gears (11) and rotating, subsidiary worm gears for linkaging and rolling on the same supporting axes (23) with the first helical gear and a second helical gear (22) for engaging with subsidiary worm gears and rotating are installed on the gear set (21). In addition, the supporting axes (26,27) of gear set (21) are axially supported on the plates (19,20).

The invention discloses one-spray-six-weft-yarn high-count high-density large-width fabric and a production method. The production method includes that six 7.3tex combed yarns are made into a doubled yarn through doubling; long staple cotton not lower than 1.7 in maturity, of 37mm in main body length, of 3,7 in Micronaire value and within 2.5dtex in close-to raw cotton degree-of-thickness difference is adopted; six 7.3tex combed yarns are made into a doubled yarn through doubling, 7.3tex single yarn and 7.3tex/8 folded yarn are produced through opening and picking, carding, combing, doubling, roving, spinning, spooling, twisting and folding, and fabric with 5/3 warp face satin tissue and six spray weft is produced through processes of warping, sizing, drawing-in and weaving. Through reasonable spinning process and weaving process, the high-grade multi-spray-weft high-count high-density large-width fabric is produced, is clean and uniform, soft and comfortable in hand feeling, thick and solid, soft, smooth and bright in luster, has good hand feeling and clothing performance and ideal fabric for processing high-grade home textile products.

The invention provides a liquid crystal display device. The liquid crystal display device comprises a front frame, a liquid crystal panel, a backlight component and a backing plate which are sequentially arranged together, wherein the front frame comprises a side wall and a fixing slot formed in the inner surface of the side wall, and the backing plate comprises a connecting wall and a limit slot formed in the connecting wall. The liquid crystal display device is characterized by also comprising a support, wherein the support comprises a first part and a second part which is connected with the surface of the first part in an inclined manner and can suppress the surface of the first part, the first part is preset in the fixing slot, and the second part limits and is against the inner surface of the limit slot and stretches for the fastening arm. By adopting the liquid crystal display device provided by the invention, the problem that the front frame and the backing plateare successfully assembled but not in placecan be solved, the problem that clamping is not tight or becomes flexible after assembling is reduced, and further impact resistance of the liquid crystal display is improved.

The invention relates to a unidirectional transmission device for a ventilation opening of a greenhouse. The unidirectional transmission device comprises a power device, a drive shaft, a first ratchet wheel, a second ratchet wheel, a first ratchet, a second ratchet, a first driven wheel and a second driven wheel, wherein the first and second driven wheels are rotatably arranged on the drive shaft, the first and second ratchet wheels and the first and second driven wheels are arranged on the drive shaft according to the order sequentially as follows: the first driven wheel, the first ratchet wheel, the second ratchet wheel and the second driven wheel, the first ratchet is arranged on the circumference of the first driven wheel, the second ratchet is arranged on the circumference of the second driven wheel, the first and second ratchet wheels are fixedly connected with the drive shaft, and ratchet teeth are matched with the first and second ratchets, so that either the first driven wheel or the second driven wheel rotates along with the drive shaft when the drive shaft rotates forwardly or reversely. According to the unidirectional transmission device for the ventilation opening of the greenhouse, the unidirectional transmission of two directions can be achieved by adopting one power device and one transmission device, the structure is compact, and the transmission efficiency is high.