39results about How to "Stable attitude" patented technology

In a gas combustion type driving tool, on a feed cylinder 21 included in a feed piston / cylinder device 7, there is provided a spring for normally urging a feed piston 22 in a feed direction. A portion of the feed cylinder 21 opposite to the spring is connected to a combustion chamber 5 through a gas conduit 26. In an intermediate portion of the gas conduit 26, there is provided a delay piston / cylinder device A. One end of a delay cylinder 27 is disposed on the combustion chamber 5 side, while the other end thereof is disposed on the feed cylinder 21 side. When a delay piston 28 is slidingly moved from one end of the delay cylinder 27 to the other end thereof by the pressure of combustion gas, air compressed within the delay cylinder 27 is supplied from the other end of the delay cylinder 27 to the feed cylinder 21.

A spool braking device for a dual bearing reel includes a spool brake unit, a spool control unit, and a tension detection unit that includes a rotational speed sensor. The spool control unit is arranged between a spool and a reel body, and it an electrically controllable unit that controls the spool. The tension detection unit detects the tension applied to fishing line that is released from the spool during casting. The spool control unit electrically controls the spool braking unit so that the spool braking unit brakes the spool with a first braking force of 50 to 100% of the maximum braking force during a first predetermined time period when the tension detected by the tension detection unit is at or below a first predetermined value.

The pad clip 14d is arranged between pins 12, 12 made to bridge an outer body portion and an inner body portion constituting a caliper and the two pads 10b, 11b. An engaging plate portion 27 is engaged with the respective pins 12, 12 without play. Press pieces 28, 28 formed by folding to bend both end portions in a rotational direction of the engaging plate portion in directions in which the more proximate to the two pads 10b, 11b, the more directed to an outer side in a radial direction are brought into elastic contact with outer peripheral edges of both end portions in a rotational direction of pressure plates 13b, 13b of the two pads 10b, 11b. Thereby, amounts of projecting portions in correspondence with the respective press pieces 28, 28 in a state of a material plate before being folded to bend from the engaging plate portion 27 can be restrained.

A pad clip for a disc brake apparatus is provided with a sandwiching portion for sandwiching a projecting portion formed in a support member of the disc brake apparatus. The sandwiching portion includes an upper hold piece, a lower hold piece, and a connecting piece for connecting the upper hold piece and lower hold piece to each other. The upper hold piece includes a hold claw having a leading end urged toward an upper surface of the projecting portion and in contact with a vertically extending wall surface of a recessed groove formed in the projecting portion, and a spring piece for urging the hold claw. When the sandwiching portion sandwiches the projecting portion, the spring piece is not in contact with the upper surface of the projecting portion.

A robot system includes a plurality of segments 3, joints 4 for linking the segments together, drive units 5 for actuating the joints, and a controller 8 for controlling the drive units. Further, the robot system has bladders 2 filled with a fluid being of lower specific gravity than the outside environment. A center of buoyancy differs from a center of gravity, and the robot system has a specific gravity of greater than 1 relative the outside environment.

A piezoelectric vibration gyro element formed by etching from a quartz substrate of a Z-plate, includes: a base portion, a pair of vibration arms for detection extending from the base portion toward both sides thereof in the direction of Y-axis, a pair of coupling arms extending from the base portion toward both sides thereof in the direction of X-axis, pairs of vibration arms for driving extending from the end portions of the coupling arms toward both sides thereof in the direction of Y-axis, four beams extending from the base portion, and support portions connected to the ends of the beams, which are all arranged on an XY plane; wherein the beams are extending in the directions of about 30° or about 60° with the X-axis as a reference.

A legged robot that can ensure a large step length while keeping the height of a body trunk at a low position without increasing a moment that is generated due to the gravitational force acting on the trunk and acting on roll joints of legs when standing on one leg is realized. In the legged robot, a pair of legs is connected so as to be able to rotate around a pitch axis (Y-axis) at lateral surfaces of a trunk. Thereby, it is possible to make the height H1 high while keeping the height of the trunk low. It is possible to ensure a large step length while keeping the height of the trunk at a low position. Legs have a structure in which roll joints are positioned below a bottom surface. Thereby, the length L1 in the pitch axis direction between the rotation axis C1 of these joints and the center of mass G of the trunk is limited. The moment acting on the roll joints of the grounding leg when standing on one leg is not increased.

A pushbutton device has a button section that is movable along a predetermined direction, and having a first member located on an opposite side to a depression side, a support section that movably supports the button section along the predetermined direction, a plurality of first magnets opposed to the first member by the support section, the plurality of first magnets being fixed so as to surround a center of the button section, the plurality of first magnets having a first magnetic pole on a side opposed to the first member, and a plurality of second magnets arranged at a position farther away from the center of the button section by a predetermined distance than each of the plurality of first magnets or at a position closer to the center of the button section by the predetermined distance than the first magnet.

A one-way roller clutch includes an outer ring, and an inner ring mounted inside the outer ring and having an outer cylindrical surface. The outer ring has on its inner periphery a plurality of cam surfaces each defining a wedge-shaped space in cooperation with the cylindrical surface of the inner ring. Rollers are each mounted between one of the cam surfaces and the cylindrical surface. Each roller is biased by a coil spring toward a narrow portion of the corresponding wedge-shaped space. Each coil spring has at its end facing the roller a radially outwardly extending spiral roller abutment portion. The roller abutment portion prevents the end of the coil spring from slipping along and separating from the roller, thus stabilizing the attitude of the coil spring.

An obstacle avoidance device for detecting surroundings of an unmanned mobile device is disclosed, which includes a stabilization platform connected with the unmanned mobile device, wherein the stabilization platform includes a stabilizer for ensuring stably bearing at least one platform camera; and an obstacle avoidance module fixed with the stabilization platform, so as to reduce interferences to detecting the surroundings by the obstacle avoidance module when the unmanned mobile device acts. The obstacle avoidance device of the present invention is able to keep a stable attitude while the unmanned mobile device is unstable and changes an attitude thereof, so as to effectively avoid obstacles.

The invention discloses an optical deorbit method for tethered towing of space debris and belongs to the field of spacecraft attitude and orbit dynamics and control. The implementation method includes: establishing a coupling dynamics model of the in-plane orbit of a tethered towing system through a Lagrange method; solving the optimal fuel problem of transfer orbit by adopting an optimization method for orbit transfer and ensuring a wide range of optimal orbit transfer of the tethered towing while system stabilizing the altitude of tethered towing system; at the end of towing, controlling thedebris by swinging and releasing to enable the debris to gain the maximum initial velocity and fly to the farther orbit, and completing the debris removal task while reducing fuel consumption duringthe debris removal process. With the method, wide range optimal orbit transfer of the tethered towing system can be guaranteed, and meanwhile, the attitude of the tethered towing system can be kept stable to remove the space debris stably; besides, the final swing control makes the debris fly further into the orbit, and fuel consumption during the debris removal process is reduced.

A slidable constant velocity universal joint holds an elastic member (coil spring) in a stable attitude even if an associated shaft makes an oscillating motion, thereby achieving an improvement in terms of stability in torque transmission. The slidable constant velocity universal joint includes an outer joint member connected to a power transmission member, and an inner joint member connected to an end portion of a shaft, with torque transmission being possible between the outer joint member and the inner joint member while allowing angular displacement and axial displacement. At a forward end of the shaft, there is provided an elastic member for elastically urging the outer joint member toward the power transmission member, and, between the elastic member and the forward end of the shaft, there is interposed a bearing member for guiding the forward end of the shaft while in contact therewith.

A seatbelt mechanism (S) comprises a chip anchor (12) disposed to one of right and left sides of a seat bottom (3) of the vehicle seat (1) and coupled to a tip end of the seatbelt (10), and a tongue anchor (14) disposed to the other of the right and left sides of the seat bottom (3) and engaged with a tongue plate (13) disposed to an intermediate portion of the seatbelt (10). A pretensioner mechanism (21) moves both the chip anchor (12) and the tongue anchor (14) substantially at the same time to actively tenses the seatbelt (10) when the vehicle collision occurs. A moving distance of the chip anchor (12) is substantially equal to a moving distance of the tongue anchor (14).

The pad clip 14d is arranged between pins 12, 12 made to bridge an outer body portion and an inner body portion constituting a caliper and the two pads 10b, 11b. An engaging plate portion 27 is engaged with the respective pins 12, 12 without play. Press pieces 28, 28 formed by folding to bend both end portions in a rotational direction of the engaging plate portion in directions in which the more proximate to the two pads 10b, 11b, the more directed to an outer side in a radial direction are brought into elastic contact with outer peripheral edges of both end portions in a rotational direction of pressure plates 13b, 13b of the two pads 10b, 11b. Thereby, amounts of projecting portions in correspondence with the respective press pieces 28, 28 in a state of a material plate before being folded to bend from the engaging plate portion 27 can be restrained.

A seatbelt mechanism (S) comprises a chip anchor (12) disposed to one of right and left sides of a seat bottom (3) of the vehicle seat (1) and coupled to a tip end of the seatbelt (10), and a tongue anchor (14) disposed to the other of the right and left sides of the seat bottom (3) and engaged with a tongue plate (13) disposed to an intermediate portion of the seatbelt (10). A pretensioner mechanism (21) moves both the chip anchor (12) and the tongue anchor (14) substantially at the same time to actively tenses the seatbelt (10) when the vehicle collision occurs. A moving distance of the chip anchor (12) is substantially equal to a moving distance of the tongue anchor (14).

The fuel cutoff valve comprises a float and a valve mechanism situated within the valve chamber of a casing. The float has a supporting portion disposed in the upper portion of the float for supporting the valve mechanism, and having a supporting face formed with a flat surface or concave surface. The valve mechanism comprises a comprises a first valve main body having a supported part of convex shape supported on the supporting face, and a seat portion disposed on the first valve main body for opening and closing a connecting passage. The center of gravity of the valve mechanism is established below the point of support, when the supported part is supported on the supporting face so as to be balanced with the supported lower end portion as the point of support.

A workpiece transfer system includes a bracket rotatably supported on a support part, a rotary drive mechanism provided on the support part in order to rotate the bracket, a workpiece support arm swingably and axially supported on the bracket, a swing drive mechanism provided on the bracket in order to swing the workpiece support arm, and a workpiece retainer provided on a tip end part of the workpiece support arm and retaining a workpiece that is to be transferred, the workpiece being inclined by operation of the swing drive mechanism when the rotary drive mechanism is operated so that a center of gravity of the workpiece comes on the vicinity of an axis of rotation of the rotary drive mechanism. This reduces the rotational load on the rotary drive mechanism, and since a small size and a reduction in weight can be achieved for the system, the workpiece transfer system and method enables a single worker to easily give a workpiece an inclination and inversion attitude change.

An inkjet printer includes: an inkjet head including nozzles and a nozzle surface tilted in a tilt direction with respect to a horizontal plane; a purging unit configured to discharge ink from the nozzles and attach the discharged ink to the nozzle surface; and a wiper configured to wipe the nozzle surface in a wiping direction orthogonal to the tilt direction. At least a portion of the wiper including an end of the wiper on a lower side in the tilt direction is tilted or curved toward a downstream side in the wiping direction toward the lower side in the tilt direction. The portion of the wiper is configured to wipe the nozzle surface while pushing the ink attached to the nozzle surface from the lower side to an upper side in the tilt direction.

A fuel tank opening and closing device is equipped with a flap valve mechanism arranged inside the tank opening forming member, having an opening and closing member for which the inlet is opened and closed by being pressed by the tip of the fueling nozzle, a shaft provided at the tip of the opening and closing member, and a bearing mechanism provided on the tank opening forming member for supporting the shaft so as to be rotatable. The bearing mechanism has a shaft support recess in which the shaft is inserted and a plurality of shaft restriction projections provided projecting from the wall surface of the shaft support recess, and the shaft restricting projections have a cross section arc shaped shaft support surface such that there is contact with a portion of the outer periphery of the shaft.

A flying head slider includes a slider body. The upstream or leading end of a bottom surface on the slider body is defined along a first datum line extending in the lateral direction of the slider body. The first datum line may be set perpendicular to the longitudinal centerline of the slider body. The upstream or leading end of the front air bearing surface is defined along a second datum line intersecting the first datum line at a predetermined inclined angle. As the incidence angle of an airflow colliding against a step defined at the leading end of the front air bearing surface gets decreased, the pitch angle of the slider body also gets decreased in the flying head slider during flight.

A recording apparatus according to the invention includes an ink jet recording head that records onto a recording medium; a paper cassette that holds the recording medium in alignment with the vertical direction; an inverting path unit that inverts the transport direction of the recording medium fed out from the paper cassette; and a downstream-side path unit that transports the recording medium from the inverting path unit toward the paper cassette.

A recording apparatus according to the invention includes an ink jet recording head that records onto a recording medium; a paper cassette that holds the recording medium in alignment with the vertical direction; an inverting path unit that inverts the transport direction of the recording medium fed out from the paper cassette; and a downstream-side path unit that transports the recording medium from the inverting path unit toward the paper cassette.

A sheet-speed reduction mechanism for a fan wheel including: fan wheels that hold, between fan blades thereof, a signature transported from a printing press thereto, and that rotates with the held signature; a stopper portion that restricts the front end of the signature held between the fan blades, and that then discharges the signature from the inside of the fan wheels; and speed-reduction guides that presses a surface of the signature advancing between the fan blades before the front end of the signature comes into contact with the stopper portion, so as to reduce the advancing speed of the signature.

The fuel tank venting device is furnished with a full fuel control valve and a rollover valve that are installed on a fuel tank, and a fuel tank valve unit having a pressure valve that is situated between a canister and the two valves. The pressure valve is furnished with a casing that has a valve chamber, a valve body housed within the valve chamber, and a spring. The valve body has a disk-shaped valve part and a side wall that projects with tubular contours from the outside perimeter of the valve part, and has a cup shape defining a spring chamber that is bounded by the valve part and the side wall. The valve part is perforated by an orifice of smaller planar dimensions than the valve aperture.