180 results about "Hand shaking" patented technology

The prism positioning support for the total station comprises a fixing lantern ring, positioning assemblies and supporting legs, the positioning assemblies are distributed on the fixing lantern ring in a triangular mode, each positioning assembly comprises an adjusting rod, an ejector rod, a spring and a plug, a mounting hole is formed in the adjusting rod, one end of the mounting hole is provided with the ejector rod, and the other end of the mounting hole is provided with the spring. A plug is arranged at the other end of the mounting hole, and a spring is arranged between the ejector rod and the plug; supporting legs extending downwards and outwards are distributed on the lower face of the fixing lantern ring in a triangular mode. The device is simple in structure, small in size, not high in requirement for measurement space, and also suitable for measurement of plane measurement points in narrow space; two hands of a person can be liberated, the prism does not need to be held by hands, the horizontal position of the fixing lantern ring can be adjusted through the adjusting supporting legs, the position of the prism is accurate, the accuracy of measured data can be guaranteed, and the measuring accuracy cannot be affected by hand shaking or other external factors. The device is simple to manufacture, low in cost, light in weight and convenient to transfer during measurement.

The utility model relates to a welding tool for automobile door panel production, which comprises a top plate, and further comprises a supporting assembly and a positioning assembly which are arranged on the top plate, the supporting assembly comprises a supporting plate arranged on the top plate, a plurality of mounting holes are formed in the supporting plate in an embedded mode, internal threads are engraved in the mounting holes, and the supporting plate is arranged on the supporting plate through a first screw. Based on the fixing operation that the screw rod is matched with the supporting piece and the pressing piece, the door plank machining tool can be matched with different door planks to be machined, especially door planks with different shapes and a plurality of cambered surfaces, can effectively support the door planks, and avoids poor welding caused by deformation of the tool; the welding machine is provided with the auxiliary moving mechanism, based on multi-degree-of-freedom sliding and fixable structural arrangement, workers can be assisted in moving the welding machine, hand shaking and line changing caused by fatigue of the workers during long-time work are avoided, and therefore the welding effect is improved.

An electronic device (301) according to an embodiment comprises: an inertial sensor (310); a camera (320) including an image sensor; a processor (360); and a controller (330). The controller (330) is configured to, while a camera application is running, acquire the magnitude and direction of movements of the electronic device (301) caused by hand shaking on the basis of sensing data acquired through the inertial sensor (310). The controller (330) is configured to determine, on the basis of the magnitude and direction of the movements of the electronic device (301), a first area for acquiring an image within the entire area of the image sensor. The controller (330) is configured to acquire pixel values of pixels included in the first area. The controller (330) is configured to provide the acquired pixel values to the processor.

The utility model relates to the technical field of ink droppers, in particular to a porous dropper capable of uniformly dropping ink, which comprises an ink extraction box, a telescopic square groove is arranged in the ink extraction box, a lifting mechanism is fixedly arranged at the top end of the telescopic square groove, a driving mechanism is arranged at the front end of the lifting mechanism, and the driving mechanism comprises a rotating component. The rotating assembly is located on the front side of the lifting mechanism, the right side of the rotating assembly penetrates through the outer wall of the right side of the ink pumping box and is sleeved with the fixing box, the bottom end of the lifting mechanism extends to the top end of a dropper, and an ink dripping connector is fixed to the bottom end of the dropper in a threaded mode. Ink in the dropper can be pushed to be discharged through the sealing cover fixedly arranged at the bottom end, the efficiency is improved, use is convenient, ink is discharged more stably, hand shaking is avoided, the efficiency is improved, and detection is convenient; and ink dripping is carried out through the multiple ink dripping holes formed in the bottom end of the sleeving pipe, and the ink outlet efficiency is improved.

The application discloses an emergency backup multi-mode power generation device and a use method thereof, and belongs to the technical field of new energy and energy saving. The device comprises a rotating arm, a space crank slider mechanism, a pressing switch, a shell, a limiting platform arranged in the shell, a vibrating spring shaft, a vibrating spring, a pressing transmission mechanism, a base, a scissor type pressing mechanism, a T type sliding sleeve, a cylindrical linear motor and a central straight cylinder locking mechanism. The cylindrical linear motor is used as an energy collection device, and the power generation device integrates vibration power generation, hand power generation and pressing power generation. The device can collect the energy generated by vibration during human walking, and can realize the conversion of electric energy through hand shaking and pressing in an emergency. The device integrates multiple power generation modes, reduces the failure probability of a single power generation mode, and significantly improves the risk resistance and practicality. The switching mode of the multiple power generation modes also reduces the fatigue of the auxiliary power generation person. The volume is reasonably arranged, and the device is convenient to carry.

The utility model relates to collection equipment technical field, the utility model discloses a kind of internet-of-things label information collection equipment, including handle;Collector, be located at one end of the handle, for collecting label information;Folding telescopic stand, be installed on the handle, for supporting collector by the folding of the folding telescopic stand;The internet-of-things label information collection equipment, by this equipment, label collection can be handheld, also can be stably placed on desktop or fixed station, without operating personnel continuously holding, this reduces the influence of operating personnel hand shaking to collection process, to improve the accuracy and efficiency of data acquisition, the compact and light design of equipment makes operating personnel can easily carry out two-hand operation, without necessarily holding equipment with one hand, this improves overall operation efficiency, and the practicability and flexibility of equipment.

The utility model relates to the technical field of electrical switch operation, and discloses an integrated tool for power-off and power-on operation of power plant equipment, which comprises a fixing frame, the top end of the fixing frame is connected with an adjusting assembly, and the inner side of the fixing frame is connected with a clamping assembly; compared with the prior art, the power distribution cabinet has the advantages that when a worker operates the power distribution cabinet at a higher position, a tool can be prevented from sliding off due to accidental collision or hand shaking of the worker, and the tool is prevented from falling off to hurt the worker or damage other equipment; the safety of the integrated tool for the power-off and power-on operation of the power plant equipment is improved; the height of the tool can be adjusted according to the specific position of an equipment operation part, and the operation head can be easily inserted into the corresponding hole, so that the operation convenience of the integrated tool for the power-off and power-on operation of the power plant equipment is improved.

The utility model discloses a double-input planetary reducer convenient for hand-cranking debugging, which relates to the technical field of reducers and comprises a rear flange, an input shaft, a front flange, an output shaft, a planetary reduction structure and a worm and gear structure, the input shaft is rotatably mounted on the inner side of the rear flange, the front flange is fixedly mounted on one side of the rear flange in the length direction, and the output shaft is fixedly mounted on the other side of the rear flange in the length direction. The output shaft is rotationally installed on the inner side of the front flange, and the planetary speed reduction structure and the worm and gear structure are both installed on the inner side of the front flange. According to the double-input planetary reducer convenient to debug by hand cranking, the planetary reduction structure can be disassembled and maintained by disassembling the rear flange and the front flange, the operation is flexible, and the use is relatively simple and convenient; after the planetary speed reduction structure is installed, the output shaft can be driven to operate through the arranged worm and gear structure, so that the circumferential point position of the output shaft is finely adjusted in a hand-cranking mode when the output shaft is connected with other equipment, the equipment installation and debugging efficiency is effectively improved, more time is saved, and the working efficiency of the speed reducer is guaranteed.

The invention provides a reinforcement cage forming device which comprises a mounting base, two annular tables, two sliding bases and two clamping assemblies, the two annular tables are arranged at the top of the mounting base at intervals in the horizontal direction and are oppositely arranged, the end faces of the annular tables are provided with containing sleeves used for containing main reinforcements, and the multiple containing sleeves are arranged in the circumferential direction of the annular tables; the two sliding seats are arranged at the top of the mounting seat and located on the two sides of the annular tables correspondingly, and the sliding seats are slidably connected with the mounting seat in the interval direction of the two annular tables; the two clamping assemblies are arranged at the tops of the two sliding seats in a one-to-one correspondence mode, and each clamping assembly is provided with two clamping jaws used for clamping the outer stirrup or the inner stirrup. According to the reinforcement cage forming device provided by the invention, displacement and deflection of the outer stirrup or the inner stirrup caused by hand shaking or external force influence can be eliminated, and the perpendicularity and fitting degree of the outer stirrup or the inner stirrup and the main reinforcement are ensured, so that the overall quality of a reinforcement cage is improved.

The present invention discloses an optical element driving mechanism, which includes an upper cover, an upper reed, a magnet group, a carrier, a lower reed, a base, a ball, a bottom circuit board and a base. The upper reed movably connects the carrier to the upper cover, and the lower reed movably connects the carrier to the base. The bottom circuit board is installed on the base and fixedly connected to the base. The base is used to install a chip and is movably connected to the base through a ball. Among them, the carrier is provided with a first set of coils, the bottom circuit board is provided with a second set of coils, and the magnet group is fixedly installed on the upper cover and cooperates with the first set of coils to drive the movement of the carrier and cooperates with the second set of coils to drive the movement of the base. The present invention realizes optical zoom and optical anti-shake through the movement of different components, and solves the problem of photo blurring caused by hand shaking during shooting.

The utility model relates to the technical field of automobile accessory mounting equipment, in particular to buckle mounting equipment for an automobile cup holder. The device comprises a mounting table, a fixing seat is arranged in the middle of the top of the mounting table, a vehicle cup holder is placed on the fixing seat, a plurality of buckle mounting openings are formed in the periphery of the outer wall of the vehicle cup holder, a plurality of fixing plates are arranged on the mounting table, and each fixing plate is provided with a second telescopic cylinder. The plurality of second telescopic cylinders are respectively arranged in the vertical mounting direction of the plurality of buckle mounting openings, and profiling buckle moulding beds are arranged at the tops of telescopic rods of the second telescopic cylinders. According to the utility model, the first telescopic cylinder drives the pressing bottom plate and the rubber head pressing rod to accurately position the vehicle cup holder, and the second telescopic cylinder is matched with the profiling buckle moulding bed, so that the buckles can be accurately arranged in the buckle mounting openings around the wall of the vehicle cup holder; buckle installation deviation caused by hand shaking or visual errors in the manual assembly process is effectively avoided, the product assembly precision is greatly improved, and the overall quality of the automobile cup stand is guaranteed.

An operating system for an endoscopic retrograde cholangiopancreatography (ERCP) surgical robot includes: an operating table, where a patient lies on the operating table; an endoscopic actuation end device; an endoscopic accessory operation end device; a console, including an operating handle, a foot switch, and a three-dimensional (3D) handle; and a display screen for human-computer interaction. A forceps lifter control module, a knob control module, a catheter drive module and a water vapor suction control module on the endoscopic actuation end device are controlled through the operating handle, the foot switch, the 3D handle and the touch screen on the console. A guide wire drive module on the endoscopic accessory operation end device remotely controls the insertion and feeding of a guide wire or catheter to complete the surgery. The operating system reduces the harm caused by long-term surgical radiation to operators and avoids hand shaking of doctors during operation.

The utility model discloses a modular stage of caster can hand shake lift, its structure includes mesa, stand, mounting bracket, worm screw elevator, take brake caster and hand wheel, wherein the mesa bottom four corners and long side center are equipped with stand respectively, and every stand bottom end is equipped with adjustable support foot respectively, and the adjacent stand between is connected with the connecting plate respectively, and the opposite two connecting plates between the length direction both ends of mesa below are installed with mounting bracket respectively, and every mounting bracket is installed with a worm screw elevator respectively near both ends, and the bottom lifting end of every worm screw elevator is connected with a take brake caster respectively. The utility model discloses the advantage: convenient single -person operation, set up the caster of manual control lift under the stage, when needing to remove position, can lower the caster and contact ground, make support foot leave ground, remove to the stage, when the stage reaches the position required, then can manual control caster and rise and leave ground, make support foot contact ground, realize steady support, improve security.

The utility model relates to the field of mold maintenance, in particular to a mold sand blasting machine convenient to use, which comprises an operation bin and a sand barrel, two gloves are arranged on the surface of the operation bin, a spray gun is arranged in the operation bin, a workbench is arranged in the operation bin, a gap is arranged between the workbench and the bottom of the operation bin, a bearing is wrapped on the surface of the workbench, and a connecting rod is arranged at one end of the bearing. According to the mold sand blasting machine, the auxiliary mechanism is installed, auxiliary lifting can be conducted on the hand of a gun when the gun is held for sand blasting work, the fatigue feeling caused by long-time hanging and hand shaking is reduced, the mold sand blasting uniformity is improved, meanwhile, the use comfort of an operator is improved, and the adjustable workbench is installed, so that the mold sand blasting machine is convenient to use. And a mold can be placed on the workbench for sand blasting, and a traditional mode that an operator holds the mold for a long time for sand blasting is not needed, so that the labor amount of the operator is reduced, and the use convenience and comfort are improved.

The utility model relates to the technical field of pacemaker wire offset distance measuring equipment, and provides an attachable ruler device which comprises release paper and a transfer sticker, the transfer sticker is pasted on the release paper, the transfer sticker is used for being pasted on dressing on a pacemaker wire, the transfer sticker comprises a transverse scale part, and the transverse scale part is provided with a plurality of scales. The transverse scale part comprises a plurality of transverse scale lines which are arranged at intervals along a straight line, and the transverse scale part is used for measuring the displacement distance of a lead of the pacemaker. According to the utility model, through the arrangement of the transfer paste capable of transferring the transverse scale part to the dressing, the transfer paste is clearer and more difficult to erase compared with marking on the dressing, and when the lead offset distance of the pacemaker is measured, a user does not need to hold the graduated scale by hand and can directly observe the lead offset distance through the transverse scale part on the dressing, so that errors caused by hand shaking during measurement are avoided.

The application relates to the technical field of cameras, and provides an optical lens, a camera and electronic equipment, which can solve the problem of poor imaging quality of a camera in the related art when a photographer's hand shakes. The optical lens comprises a front lens group and a rear lens group arranged in the direction from an object side to an image side; the front lens group comprises a first light path turning element and at least one positive lens located on the object side of the first light path turning element, the at least one positive lens has a first optical axis, the rear lens group has a second optical axis, the first light path turning element has a first reflection surface; the second optical axis comprises an optical axis segment, an end point of the optical axis segment is located on the first reflection surface, and the optical axis segment extends to the image side of the first reflection surface; the front lens group is an anti-shake compensation lens group and can swing around a first rotation center axis; the first rotation center axis intersects the optical axis segment or is located close to the optical axis segment. The application can be used on electronic equipment such as mobile phones.

The utility model belongs to the technical field of package printing, and relates to an automatic alignment device for package printed matters, which comprises a bottom support frame, a sliding frame is mounted in the middle of the top end of the bottom support frame, the sliding frame is respectively connected with a first horizontal driving module and a second horizontal driving module in a sliding manner, and an alignment component is mounted on the first horizontal driving module. The high-frame vision sensor is used for scanning edge feature points of a paperboard and comparing the edge feature points with stamping points of stamping equipment, the driving part is used for driving the driving lead screw to rotate, the threaded driving block drives the adjusting plate and the adsorbed paperboard to move in the Y-axis direction, and the first horizontal driving module is combined to drive the alignment assembly to move in the X-axis direction as a whole. Compared with traditional manual alignment which depends on experience and proficiency of an operator, the automatic alignment device has the advantages that relative position deviation of the paperboard and the mold caused by slight hand shaking or visual deviation of the operator is avoided, and consistency of positioning each time is guaranteed.

The invention provides laser welding equipment for an electric vehicle controller, and belongs to the technical field of laser welding equipment. Comprising a welding machine body, a supporting base is installed on a workbench of the welding machine body, four supporting columns are fixedly connected to the outer wall of the top of the supporting base, the four supporting columns are symmetrical pairwise, a first receding round hole and a first sliding groove are formed in the two sides of the outer wall of the top of the supporting base correspondingly, and the two supporting columns close to the first sliding groove are connected with the first receding round hole. First limiting plates are fixedly connected to the top ends of the supporting columns, and second limiting plates are fixedly connected to the outer walls of the top ends of the two supporting columns close to the first receding round hole; the fixing assembly is used for fixing the inductance coil and connected with the supporting base. Through the arrangement of the fixing assembly, the inductance coil can be fixed during laser welding, a worker does not need to cooperate with a jig for fixing with hands, and welding dislocation caused by the fact that the welding precision is affected by hand shaking is avoided.

The utility model relates to a gasket cutting structure which comprises a main body unit, a placing unit, a locking unit, an adjusting unit, a cutting unit and a control unit. The rubber gasket cutting device has the advantages that the main body unit, the placing unit, the locking unit, the adjusting unit, the cutting unit and the control unit are used in cooperation to adjust the cutting position, cutting of rubber gaskets of different shapes and sizes is achieved, and the manufacturing requirements of various sealing gaskets can be met; the rubber gasket is fixed by matching with the locking unit, so that the cutting position is accurate, frequent manual operation like using scissors and a paper cutter is not needed, the manufacturing time is greatly shortened, the cutting deviation caused by factors such as hand shaking during manual cutting can be effectively avoided, and the dimensional precision of the manufactured rubber gasket is higher.

1. The name of the design product: coffee grinder (hand shaking type). 2. The use of the design product: coffee grinder. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The utility model discloses a rapid quantitative detection kit for detecting prostate small body leaked protein, which belongs to the technical field of prostate small body leaked protein detection and comprises a kit inner box, a kit outer box is arranged on the outer side of the kit inner box, and a sealing plate is arranged on the inner side of the kit outer box. According to the utility model, through the unique design of the adjusting plate, a detector can flexibly rotate the adjusting plate according to the amount of a required solution, so that the discharge port is accurately connected with the corresponding discharge chute, and when the solution is added to a position flush with the discharge chute, the redundant solution automatically flows out from the discharge port to the outer kit for temporary storage; therefore, the problem of inaccurate solution measurement caused by factors such as human visual errors or hand shaking in a traditional measurement mode is effectively avoided, high accuracy of the solution amount added each time is ensured, a solid foundation is laid for the accuracy of detection of the prostate small body leaked protein, the reliability and repeatability of a detection result are remarkably improved, and the method is suitable for popularization and application. And detection errors caused by solution amount deviation are reduced.

The electric push rod comprises a shell, a driving mechanism, an outer pipe, a push rod assembly and a first limiting switch, the outer pipe is fixedly connected to the outer side of the shell, a guide groove is formed in the inner side wall of the outer pipe in the length direction, and the push rod assembly is arranged in the outer pipe and is in sliding fit with the inner side of the outer pipe; the input end of the push rod assembly extends into and is fixed into the driving mechanism, the first limiting switch is electrically connected with the driving mechanism and is fixed to the push rod assembly, and the top of the first limiting switch is clamped into the guide groove. The first limiting switch moves leftwards in the sliding groove along with the push rod mechanism until the triggering end of the first limiting switch extrudes the inner wall of the left side of the outer pipe and triggers the first limiting switch, the first limiting switch controls the driving mechanism to be closed, the pushing assembly is prevented from excessively retracting in the outer pipe, the outer pipe is protected, and the service life of the electric push rod is prolonged.

The present application relates to the technical field of welding, in particular to a kind of welding device for building steel structure joint.The technical problem of the present application is that staff hand shaking can easily cause weld deformation, defects and other security risks.The technical solution of the present application is that it includes handle, support cylinder, rotating cylinder, rotating smooth unit, etc., the support cylinder is arranged at one end of the handle, the rotating cylinder is rotatably arranged on the support cylinder, and the rotating smooth unit is arranged on the rotating cylinder and the support cylinder.The present application sets up telescopic pipe, the staff swings left and right by holding the handle, so that the support cylinder drives the rotating cylinder to rotate, thereby the rotating cylinder extrudes the telescopic pipe, the gas pressure in the telescopic pipe rises, thereby generating thrust, the rotating cylinder drives the goose neck pipe to move smoothly through the conductive parts, thereby the weld formed by welding is uniform in thickness, and the weld quality is guaranteed.

The invention provides a laser-vision collaborative SLAM-RTK fusion anti-interference handheld surveying and mapping device, and relates to the field of geographic surveying and mapping equipment, the laser-vision collaborative SLAM-RTK fusion anti-interference handheld surveying and mapping device comprises a surveying and mapping instrument, and further comprises a laser radar module arranged on the surveying and mapping instrument; the visual sensor module is arranged on the surveying instrument; the RTK positioning module is arranged on the surveying instrument; the central processing unit is in communication connection with the laser radar module, the visual sensor module and the RTK positioning module; the supporting mechanism is arranged at the bottom of the surveying instrument, detachably connected with the surveying instrument and used for supporting the surveying instrument. Through the arrangement of the supporting mechanism integrating lifting, angle and universal adjustment, flexible switching and high stability of operation modes are achieved, a user can rapidly switch between handheld scanning and static erection scanning, hand shaking can be effectively eliminated during static scanning, the data quality of a key area is ensured, and the user experience is improved. The problems that in the prior art, handheld equipment is insufficient in stability, and a traditional tripod is tedious in adjustment and poor in adaptability are solved.

The application provides a tightening device and a tightening equipment. The tightening device comprises a shell, a power module, an output head and a bearing assembly. The power module is arranged in the shell and comprises a motor and a speed reducer which are power-connected together. The power module further comprises a module shell. A motor shaft of the motor is power-connected to an input shaft of the speed reducer. The output head is at least partially arranged in the shell and is connected to an output shaft of the speed reducer. The motor is used to drive the output head to rotate through the speed reducer. The bearing assembly is arranged in the shell and is arranged between the power module and the shell, so that the module shell is rotatably connected to the shell. In this way, the shell of the power module and the shell held by the user are connected through the bearing assembly, so that the hand of the user is less affected by the vibration of the power module, thereby relieving the hand fatigue of the user. During the driving of the motor to rotate the output head, the influence of the hand shaking of the user on the precision of the tightening device is reduced, and the use precision of the tightening device is improved.

The present invention belongs to the technical field of welding equipment, and more specifically, is an air-cooled handheld laser welder, comprising a main housing, a control panel provided on the front of the main housing, an auxiliary housing provided at the bottom of the main housing, movable rollers symmetrically provided at the bottom of the auxiliary housing, and working parts provided on the sides of the auxiliary housing; the working parts include a pistol-type grip, a transition connector fixedly connected to the bottom of the pistol-type grip. When a novice operator uses the pistol-type grip of the device for laser welding, they can first adjust the sleeve housing and the auxiliary rods on both sides of the interior to ensure that the welding end always maintains a fixed distance from the welding surface, and utilize the characteristic that the guide wheel can only roll in a certain direction to guide the operator to perform relatively smooth mobile welding work, thereby avoiding problems such as insufficient welding precision caused by the operator's hand shaking and unskilled operation.

The utility model discloses a low -voltage distribution cabinet unit drawer mounting mechanism, including the supporting plate, two adjacent the supporting plate between the installation has the hand shake unit drawer, the supporting plate top both sides symmetry is equipped with the guide rail, the guide rail bottom end both sides vertical fixed connection has the T -block, the supporting plate bottom both sides all are seted up T -type hole, and the T -block is hooked on the supporting plate through T -type hole, the guide rail bottom end both sides and the corresponding place of supporting plate all are seted up the bolt perforation, the hand shake unit drawer both sides all rotatory mounting has the ball bearing, through the design of the vertical interval distribution of many supporting plates, can adapt the drawer layered installation demand, and the supporting plate is hooked with the guide rail with the T -block, T -type hole pre -positioning adds the bolt fixed double -connection mode, reduces the assembly alignment difficulty again, and promotes the connection stability, and the hand shake unit drawer both sides ball bearing and the roller cooperation guide rail roll, and the push -and -pull friction resistance is reduced greatly.

The utility model discloses a kind of detection and analysis devices of forbidden and limited substances in cosmetics, including cosmetic forbidden analysis mechanism, shaking mechanism and protection mechanism. Cosmetic forbidden analysis mechanism includes chemical medicine analysis device ontology, apron, connecting plate, fixed block and rotating rod. Shaking mechanism includes first transmission part, second transmission part, fixed part and hand shaking part. Protection mechanism includes first cover body, second cover body and third cover body. The utility model can be shaken to the sample to be detected by shaking mechanism, when opening device cover, sample can be shaken mechanically, even if the sample of detection is more, operator also does not need to shake repeatedly, effectively avoid long time to cause shoulder and wrist sore, to improve the efficiency of detection, transmission part on shaking mechanism can be shielded by protection mechanism, avoid exposure in external unsafe and affect appearance.

There is provided a camera module including a plurality of ball bearings to support the driving of a lens barrel at the time of compensating for unintended camera movement due to disturbance such as hand shake. The lens barrel may be driven in first and second directions, independently, by one driving force exerted in the first direction perpendicular to an optical axis and by another driving force exerted in the second direction perpendicular to both the optical axis and the first direction, thereby preventing driving displacement from being generated at the time of compensating for unwanted motion such as hand shake while securing reliability against external impact, and having reduced power consumption at the time of compensating for the disturbance.