Abstract: A universal driving device includes a sun gear rotatably provided; a ring gear disposed on a rotation plane coplanar to a rotation plane of the sun gear and provided so that a rotation shaft of the ring gear is movable relative to a rotation shaft of the sun gear; and a gear train engaging the sun gear to the ring gear and configured to allow a relative motion between the rotation shaft of the sun gear and the rotation shaft of the ring gear and define a continuous power transmission state between the sun gear and the ring gear.

Abstract: A toothed gear for use in a gearing, comprising a base body that forms a ring gear with a number of first teeth having a first deformability and a number of second teeth having a second deformability, wherein the second deformability is greater than the first deformability and to a gear pair of a gearing, comprising such a toothed gear and at least one further toothed gear which can be made to mesh or is in mesh with the toothed gear. The invention relates moreover to a gearing with such a gear pair.

Abstract: A rotary apparatus includes a casing having a top sunk opening and an axial hole that are coaxially with each other along an axial line. A top adjusting disc unit is fixed in the top sunk opening, and has a top inner surrounding surface and a top outer surrounding surface. A top inner hole of the top inner surrounding surface extends along a central line parallel to and offset from the axial line. The top outer surrounding surface is non-coaxial with the top inner surrounding wall. A passive gear unit is disposed in the axial hole, and is driven by an active gear unit that is driven by a drive unit in the casing. The passive gear unit has an output shaft extending along the central line. A top bearing is clamped between the top support portion and the top inner surrounding surface of the top adjusting disc unit.

Abstract: The invention concerns a planetary gear box, which has a sun gear, a plurality of planet gears, a ring gear and a plurality of plain bearing pins. Here, a plain bearing pin is arranged in each planet gear, wherein the plain bearing pin and the planet gear form a lubricated plain bearing, and the plain bearing pin forms a crowning at its contact face, wherein the outer diameter of the contact face decreases from a maximum outer diameter towards at least one axial end of the contact face. The crowning of the contact face is configured such that the contact face is concavely shaped adjacent to at least one axial end of the contact face or to a cylindrical region adjoining the axial end.

Abstract: An automated order fulfillment system and mobile robot are disclosed, where the mobile robot includes a compliant drive for moving between levels of a multilevel storage structure.

Abstract: The present invention relates to a gear wheel comprising an outer part (12) having a gear rim (14), an insert (16) which has an insert outer diameter (dEa) and a receptacle section (32) having an insert part inner diameter (dEi) for forming a shaft-hub connection, and a connecting part (18) which is arranged between the insert part (16) and the outer part (12) and which connects the insert part (16) and the outer part (12) in a formfitting and/or materially-bonded and/or friction-locked manner, wherein the connecting part (18) has a number of ribs (27) or the connecting part (18) is formed by a number of ribs (27), wherein the ribs (27) each extend along a tangent (T) which abuts a tangent circle (CT), wherein the tangent circle (CT) has a tangent circle diameter (dCT) which is larger than or equal to the insert inner diameter (dEi) and smaller than or equal to the insert outer diameter (dEa).

Abstract: The flat strain wave gearing is provided with an axially arranged rigid gear, flexible gear and wave generator. The flexible gear forms a flat truncated cone shape, has a tooth formation portion connected via a bellows-shaped cross-sectional diaphragm to a rigid boss which is an output shaft linking part. The flat strain wave gearing can ensure axial flexibility of the tooth formation portion, and can enable teeth of the flexible gear to mesh favorably with teeth of the rigid gear in the axial direction in each position in the tooth trace direction. Local bias of the load torque in the meshing portion in the tooth formation portion can also be suppressed.

Abstract: A drive device comprises a housing, a drive portion, a spindle member to rotate by driving of the drive portion, a nut member screwed with the spindle member); a moving member coupled to the nut member, and a rotation regulating portion which suppresses rotation of the nut member to move the nut member) in an axis X direction of the spindle member, wherein the moving member has a fragile portion to be broken by a predetermined force being weaker than a force required to break the nut member, and the fragile portion is configured that a fracture portion with which the nut member is pressable by the moving member toward the drive portion is formable when the fragile portion is broken.

Abstract: A crossing gate mechanism includes a gate mechanism enclosure, a gate arm shaft, and a quick-replacement moon gear assembly. The gate mechanism enclosure defines an interior space. The gate arm shaft extends into the gate mechanism enclosure and is rotatable relative thereto. The quick-replacement moon gear assembly is coupled to the gate arm shaft for rotation therewith and is positioned within the interior space. The quick-replacement moon gear assembly includes a gear hub fixed to the gate arm shaft for rotational movement therewith, and a quick-replacement moon gear releasably coupled to the gear hub. The quick-replacement moon gear is removeable from the interior space while the gear hub remains fixed to the gate arm shaft.

Abstract: The present disclosure refers to a pump (1) comprising a rotor shaft (13) extending along a rotor axis (R), a bearing body (19) circumferentially encompassing the rotor shaft (13) and comprising a radially outer bearing surface (32), and a locking ring (25) circumferentially encompassing the rotor shaft (13) and limiting an axial movement of the bearing body (19) relative to the rotor shaft (13), wherein the locking ring (25) comprises at least two radially inwardly protruding teeth (49, 51, 53, 55), wherein the locking ring (25) is radially expandable from a locking state to a mounting state against an elastic restoring force of the locking ring (25), wherein the locking ring (25) is, in the mounting state, positionable at a desired axial position on the rotor shaft (13), wherein the teeth (49, 51, 53, 55) are configured to press, in the locking state, against a radial outer surface (31) of the rotor shaft (13) by the elastic restoring force of the locking ring (25).

Abstract: A coaxial split torque gearbox comprises a first pinion meshed with a first gear; a second pinion attached to the first gear and meshed with a first bull gear, the first bull gear operable for transferring torque to cause a first rotor to rotate; and a third pinion attached to a second gear and meshed with a second bull gear, the second bull gear operable for transferring torque to cause a second rotor to rotate, the second gear being meshed with the first gear, and a number of teeth of the first gear being different than a number of teeth of the second gear.

Abstract: A gear fine-tuning pan-tilt includes a rotating base, a roll worm support seat, a roll adjusting assembly, a pitch adjusting assembly, and a bearing seat arranged in sequence from bottom to top; the pitch adjusting assembly of the complete gear structure is located on the above, and the roll adjusting assembly located below adopts an arc-shaped rack structure, which reduces the interference to the pitching movement of the upper assembly and makes the height of the pan-tilt smaller. The arc opening of the arc-shaped rack faces upwards, so that the rotation axis is closer to the center axis of the lens. The upper and lower combination of the two structures strengthens the swing ability of the top of the pan-tilt in the limited size. The structure is able to be aimed at the subject through the rotating base, and leveled the left and right, and determined the pitch angle.

Abstract: A modular multi-engine system having a plurality of engines and a plurality of gear units each gear unit having at least one rotatable member and a drive shaft being driven by one of the plurality of engines, where at least one of the gear units is a main gear and the other peripheral gear unit(s). Each rotatable member of each gear unit engages at least one other rotatable member of an adjacent gear unit such as to ultimately transfer torque from all the engines operable in said modular multiengine system to an output drive shaft connected to said main gear unit. The rotatable member of at least one of the peripheral gear units is located at a different height than at least one other cogwheel of another gear unit. The main gear unit includes an upper rotatable member and a lower rotatable member coaxially connected.

Abstract: A gearbox includes a sun gear, a plurality of planetary gears meshed with the sun gear, a rotating frame supporting the planetary gears, and a housing with an internal ring gear meshed with the planetary gears. The planetary gears include a first gear and a second gear coaxially connected to each other along an axial direction and rotating synchronously, the first gear meshed with the sun gear, and the second gear meshed with the internal ring gear of the housing. The rotating frame received in the housing has an upper frame and a lower frame with a central hole, each of the plurality of planetary gears is arranged between the upper frame and the lower frame by a mounting pin, the lower frame is supported by a flange connected to the housing, the sun gear is driven to rotate so as to operate the rotating frame. The gearbox of the present disclosure has low vibration and low noise.

Abstract: A gear assembly for use with a turbomachine comprises a sun gear, a plurality of planet gear layshafts that each support a first stage planet gear and a second stage planet gear, and a ring gear. The sun gear is configured to rotate about a longitudinal centerline of the gear assembly, and the plurality of planet gear layshafts have a tubular shape.

Abstract: An elastic actuator includes a gear transmitting a rotational force; a mounting recess formed in a first side of the gear; a plurality of elastic wedges received in the mounting recess at positions that are spaced apart from each other in a circumferential direction of the mounting recess, each elastic wedge including a non-metal elastic material; a through-hole penetrating an elastic wedge among the plurality of elastic wedges; an output body configured to cover the first side of the gear; and at least one insertion bar protruding from a first side of the output body toward the first side of the gear and configured to be inserted into the through-hole. The elastic actuator further includes a shaft coupled to the output body and penetrating the gear, a protrusion having an inner space through which the shaft passes being formed to extend from the mounting recess toward the output body.

Abstract: A dynamic damper includes: a mass body that is disposed inside a rotation shaft and extends along a shaft center of the rotation shaft; and an elastic body interposed between the mass body and the rotation shaft. Further, the mass body is allowed to vibrate to a linear motion state, the elastic body includes: first and second contact surfaces, when the gear generates vibration so as to fall from a radial direction of the rotation shaft to an axial direction side of the rotation shaft, compressive stress acts on the elastic body by the mass body vibrating so as to push the first contact surface in response to the vibration, and when the gear generates vibration along the axial direction, compressive stress acts on the elastic body by the mass body coming in the linear motion state and vibrating so as to push the second contact surface.

Abstract: An arrangement includes a planet carrier. The planet carrier includes a web, a journal and a bushing. A first end of the journal is fixed in the web, at least a part of the journal projects into the bushing, and a second end of the journal is fixed in the bushing. The planet carrier further includes a stiffening element, an annular support ring, and a cap placed onto a first axial end of the bushing. An axis of symmetry of the annular support ring coincides with a center axis or axis of rotation of the planet carrier. The stiffening element is fixed in the bushing and in the support ring. The bushing and the stiffening element are connected to each other as two pieces. The stiffening element is joined to the cap.

Abstract: The present disclosure provides a transmission device for a household electrical appliance, including a drive shaft and an output shaft assembly. The output shaft assembly includes a planetary carrier, a planetary gear train mounted on the planetary carrier, an output shaft and a follower shaft. The planetary gear train includes a sun gear and at least one planetary gear engaged with the sun gear. The planetary carrier is connected to the output shaft. The sun gear is connected to the follower shaft. The planetary carrier is provided with a first bearing and a second bearing that are disposed coaxially with the output shaft. One end of the follower shaft protrudes from the sun gear and is connected to the first bearing. One other end of the follower shaft passes through the second bearing, protrudes from the planetary carrier and is connected to the drive shaft in a clearance fit.

Abstract: A fan aspirator, and related systems and methods, utilizes a plurality of motors to drive a fan of an aspirator to deliver inflation fluid to an inflatable device. The fan aspirator includes a plurality of motors and a respective plurality of drive gears configured to drive a pinion gear to which the fan is mounted within a central chamber of the housing of fan aspirator.

Abstract: Provided is a robotic system that includes a surgical instrument with a wrist including an elongate shaft extending between a proximal end and a distal end, a wrist extending from the distal end of the elongate shaft, and an end effector extending from the wrist. The end effector may include a first jaw and a second jaw, the first and second jaw being moveable between an open position in which ends of the jaws are separated from each other, and a closed position in which the ends of the jaws are closer to each other as compared to the open position. The surgical instrument may also include at least one rotary cutter extending from the wrist and positioned at least partially within a recess formed in a face of the first jaw.

Abstract: A transmission device includes an external transmission device, an internal transmission device, and a spacer ring. The external transmission device is cylindrical and has an outer wall and an inner wall. The inner wall has a plurality of inwardly extending arc-shaped protrusions. The internal transmission device is disposed in the inner wall and has an outer circumferential surface including a plurality of outwardly extending arc-shaped protrusions. The spacer ring is located between and contacts the arc-shaped protrusions of the external transmission device and the arc-shaped protrusions of the internal transmission device. When torque between the external transmission device and the internal transmission device is greater than a predetermined torque, one or more of the arc-shaped protrusions of the external transmission device or the arc-shaped protrusions of the internal transmission device deform and the external transmission device rotationally slips relative to the internal transmission device.

Abstract: A turbomachine engine includes a fan assembly and a core engine comprising a turbine and an input shaft rotatable with the turbine is provided. A single-stage epicyclic gear assembly receives the input shaft at a first speed and drives an output shaft coupled to the fan assembly at a second speed. A sun gear rotates about a longitudinal centerline of the gear assembly and has a sun gear-mesh region along the longitudinal centerline of the gear assembly where the sun gear is configured to contact a plurality of planet gears. A ring gear-mesh region is provided along the longitudinal centerline of the gear assembly where a ring gear is configured to contact the plurality of planet gears. The sun gear-mesh region is axially offset from the ring gear-mesh region along the longitudinal centerline.

Abstract: An inline gearbox for a land vehicle that includes an engine having a clutch housing for the transmission of rotational force from the engine to one or more wheels for propelling the land vehicle, wherein the inline gearbox includes a fast-change gear assembly.

Abstract: A rotary actuator is used in a shift-by-wire system for a vehicle. The actuator includes a motor, an output shaft, a speed reducer, and a case. The motor includes a motor shaft. The output shaft is disposed in parallel with the motor shaft. The case houses the motor and the speed reducer. The case includes an upper case that houses the motor and a lower case that houses the speed reducer. The speed reducer includes a first reducer that includes a ring gear embedded in a resin portion of the lower case and a parallel-shaft type second reducer that includes a drive gear on the motor shaft and a driven gear on the output shaft. The ring gear includes an annular gear portion and a cover that protrudes radially inward from one end of the annular gear portion.

Abstract: Disclosed is a compound harmonic gear motor having: first and second ground gears connected by a stationary shaft; a wave generator including an outer surface that can rotate completely around the stationary shaft, the wave generator including a rotor and a stator, wherein rotation of the rotor causes rotation of the outer surface; a flex spline surrounding the outer surface of the wave generator that is driven to rotate by rotation of the outer surface of the wave generator; and an output flange including internal teeth that mate with the flex spline to cause rotation of the output flange completely around the stationary shaft.

Abstract: An electric actuator 1 includes: an electric motor 10; a first motion conversion mechanism 20 that has a screw shaft 21 rotatably driven by the electric motor 10 and a nut 22 screwed with the screw shaft 21, and converts a rotary motion of the screw shaft 21 into a linear motion of the nut 22; and a housing 40 accommodating the electric motor 10 and the motion conversion mechanism 20. The housing 40 includes a pair of housing split bodies 41 and 42 split by a plane parallel to an axial direction of the screw shaft 21.

Abstract: An inline gearbox for a land vehicle that includes an engine having a clutch housing for the transmission of rotational force from the engine to one or more wheels for propelling the land vehicle, wherein the inline gearbox includes a gearbox housing having a front end, a side and a rear end, with the front end adapted to be joined to the clutch housing. There is an input shaft contained at least in part within the gearbox housing proximate to the front end of the gearbox housing, and a primary gear train that includes (a) a lay shaft; (b) a drive shaft; and (c) a plurality of selectively engaged meshed gear pairs respectively mounted on the lay shaft and the drive shaft for transmitting rotational force from the lay shaft to the drive shaft. The inline gearbox also includes an output shaft contained at least in part within the gearbox housing proximate to the rear end of the gearbox housing, with the output shaft rotationally coupled to the drive shaft.

Abstract: An integrated gear and torsional vibration damper assembly (10, 20, 30, 30) includes a gear (11, 21, 31, 41) having a toothed portion (11a, 21a, 31a, 41a) and a torsional vibration damper (12, 22, 32, 42) supported on the gear (11, 21, 31, 41) for limited rotational and dampened movement relative to each other. The gear (11) may include a hub portion (11b), and the torsional vibration damper (12) may be supported on the hub portion (11b) of the gear (11). Alternatively, the gear (21) may include a hub portion (21b), an intermediate ring (23) may be supported on the hub portion (21b) of the gear (21), and the torsional vibration damper (22) may be supported on the intermediate ring (23). Alternatively, the gear (31) may include a toothed portion (31a) and a hub portion (31b) that extends radially inwardly from the toothed portion (31a) and has an opening (31c) extending therethrough, and the torsional vibration damper (32) may extend through the opening (31c).

Abstract: An externally toothed gear of a dual-type strain wave gearing is provided with first and second external teeth having different teeth numbers, and a gap formed between these teeth as a cutter clearance area for tooth cutters. The maximum width L1 of the gap is 0.1 to 0.3 times the width L of the externally toothed gear. The depth from the tooth top land of the first external teeth to the deepest part of the gap is 0.9 to 1.3 times the depth of the first external teeth, and the depth from the tooth top land of the second external teeth to the deepest part of the gap is 0.9 to 1.3 times the depth of the second external teeth. The tooth bottom fatigue strength of the externally toothed gear provided with differing numbers of first and second external teeth is increased.

Abstract: A turning device includes: a driving source; a main drive gear rotationally driven by the driving source; a driven gear that engages with the main drive gear and is rotated integrally with a rotated body, wherein the turning device rotationally drives the driving source to rotate the rotated body; a movement mechanism that causes the main drive gear to reciprocate in an axial direction between a separated position at which engagement of the main drive gear and the driven gear is released and an engaged position at which the main drive gear engages with the driven gear; a forward rotation mechanism that intermittently rotates the main drive gear; and a reverse rotation mechanism that intermittently rotates the main drive gear in a direction opposite to a direction by the forward rotation mechanism.

Abstract: This power transmission device includes a motor, a worm connected to a rotating shaft of the motor, and a worm wheel engaged with the worm and disposed at an operation pedal side with respect to the worm, wherein a biasing member which biases the motor in a direction in which the worm and the worm wheel come in contact with each other when the motor is driven is disposed between the motor and a housing.

Abstract: The reducer includes a screw, threaded internal rollers, and a tapped internal casing. The internal rollers each being in mesh firstly with the screw and secondly with the internal casing by means of at least one thread of opposite hand to a thread of the screw and of the same hand as a thread of the internal casing. The reducer further includes a tapped external casing and external rollers each in mesh firstly with the internal casing and secondly with the external casing. The external rollers are provided with at least one thread of opposite hand to a thread of the internal casing and of the same hand as a thread of the external casing.

Abstract: A transducer assembly for use in a power tool includes a bracket affixed to a housing of the power tool and a protrusion having an arcuate outer periphery. The protrusion is offset from a central axis of the bracket and extends from the bracket in a direction parallel with the central axis. The transducer assembly also includes a transducer having an inner hub with an aperture through which a distal end of the protrusion is received. The arcuate outer periphery of the protrusion is in substantially line contact with a wall segment at least partially defining the aperture. The transducer also includes an outer rim affixed to a ring gear of the power tool, a flexible web interconnecting the inner hub to the rim, and a sensor affixed to the flexible web for detecting strain of the flexible web in response to a reaction torque applied to the ring gear.

Abstract: In a vehicle in-wheel motor drive device, an in-wheel motor unit is supported by a supporting member in a posture in which a direction from a first axis to a center-of-gravity position of the in-wheel motor unit has a horizontal direction component in an axially perpendicular plane perpendicular to the first axis, and the supporting member is provided with a stopper brought into contact with the in-wheel motor unit to regulate vibrations having a component in a vertical direction around the first axis of the in-wheel motor unit before an elastic member reaches an elastic limit.

Abstract: A strain wave gearing with a built-in motor is provided with a motor, a wave gear mechanism enclosing the motor coaxially, and a heat-insulation spacing formed therebetween. The wave gear mechanism has a wave generator attached to the motor rotor so as to rotate integrally with the motor rotor. A wave generator plug of the wave generator is fixed to a rotor magnet back yoke of the motor rotor so as to enclose the rotor magnet back yoke. The spacing is formed in a contact surface portion between the rotor magnet back yoke and the wave generator back yoke, whereby heat transfer from the motor to the wave gear mechanism is suppressed.

Abstract: To permit a torque support (4) having the most play-free introduction of force into the supporting structure with a compensation of tolerance at the same time, it is provided that a guide bushing (24), which is arranged in a recess (28) on the second end (13) and a connecting pin (20), which is pivotably mounted in the guide bushing (24) all arranged on a connecting part (10) of the torque support (4), a gap (29) being provided in the radial direction (R) between the guide bushing (24) and the recess (28) and the guide bushing (24) being arranged in a play-free manner in the tangential direction (T) in the recess (28).

Abstract: A surgical system (200) includes a surgical instrument (260) that is sensitive to backlash that would adversely affect the transmission of controlled torque and position to the surgical instrument. The surgical instrument (260) is coupled to motors in a surgical instrument manipulator assembly (240) via a mechanical interface. The combination of the mechanical interface and surgical instrument manipulator assembly (240) have low backlash, e.g., less than 0.7 degrees. The backlash is controlled in the surgical instrument manipulator assembly (240). From the drive output disk (545) in the surgical instrument manipulator assembly to the driven disk (964) of the surgical instrument, the mechanical interface has zero backlash for torque levels used in surgical procedures.

Abstract: A primary objective of the present embodiments is to provide a transmission that may be simple in design, low in weight, and have a reduced cost of manufacture while being capable of a relatively high ratio.

Abstract: A worm backlash adjustment device includes a drive unit, a backlash adjustment unit, and a control device. The drive unit includes a first motor device, a first drive member, a linking member, a passive member, and a second drive member. The first drive member and the linking member are coaxially driven by the first motor device. The passive member is coaxially connected with the second drive member and linked by the linking member to turn reversely. The two drive members are disposed at two sides of a driven member to drive the driven member, respectively. The backlash adjustment unit includes a second motor device, a screw member, and a backlash adjustment member. Through the screw member, the backlash adjustment member is driven by the second motor device to move linearly. The second drive member has a drive function and a backlash adjustment function.

Abstract: A stroller includes: a first stroller component and a second stroller component. At least one of the first and second stroller components is movable from a first position to a second position. The stroller also includes: a drive mechanism operatively engaged with the at least one of the first and second stroller components to move the at least one of the first and second stroller components from its first position to its second position; and a disengaging mechanism for disengaging the operative engagement between the drive mechanism and the at least one of the first and second stroller components to facilitate manual movement of the at least one of the first and second stroller components.

Abstract: The present invention relates to a valve assembly and, more particularly, to a valve assembly which has a simple configuration to return a valve from an open or closed position to an initially-set position when the supply of electric power to a drive motor which controls the open ratio of the valve is shut off.

Abstract: A piston assembly for a torque converter is provided. The piston assembly includes a seal assembly including an inner ring configured for fixing to an outer circumferential surface of a transmission input shaft. The seal assembly also includes an outer ring on an outer circumferential surface of the inner ring. The piston assembly also includes a lock-up clutch piston including a radially inner end engaging the seal assembly. A method of forming a piston assembly for a torque converter is also provided. The method includes providing an outer ring on an outer circumferential surface of an inner ring to form a seal assembly configured for fixing to an outer circumferential surface of a transmission input shaft and connecting the seal assembly to a radially inner end of a lock-up clutch piston.

Abstract: A fixed bearing for a steering gear having a rotary bearing which comprises an inner bearing shell which is provided for receiving a pinion shaft of the steering gear, and an outer bearing shell which is accommodated in a bearing bushing, and having a pivoting ring which has an outer ring and an inner ring which are pivotably connected via one or more torsion webs, wherein the outer ring is provided for supporting the fixed bearing in a housing of the steering gear, wherein the inner ring of the pivoting ring is mounted and axially secured on the outside of the bearing bushing.

Abstract: Systems and methods for improving operation of a hybrid vehicle are presented. In one example, a method for transitioning between regenerative braking and providing positive torque to a driveline is presented. In particular, an electric machine of the hybrid vehicle may be operated in a speed control mode to reduce the possibility of gear lash.

Abstract: It is provided a meshed gear for a vehicle disposed in a power transmission path between an engine and drive wheels and made up of a pair of gears meshed with each other, at least one gear making up the meshed gear having a ring shape, and the one gear having an outer circumferential portion disposed with an additional vibration system.

Abstract: In a device for transmitting a torque to a rotary kiln (13), including a drive shaft driven by a motor and having a drive pinion driving a gear rim connected to the rotary kiln, the drive pinion (5) drives the gear rim (12) via an interposed transmission (6), wherein a gear wheel (7) of the transmission (6) engages with the drive pinion (5) in a manner displaceable in the axial direction.

Abstract: Various packaging designs for placement of a magnetic torque sensor at the output shaft of a front wheel drive transmission are provided. One design provides for mounting a sensor on a chain drive sprocket or integrating a sensor into a modified sprocket bearing mount. Another design provides for mounting a sensor at the grounded ring gear of a final planetary drive. Another design provides for mounting a sensor at the differential housing. Another design provides for mounting a sensor at the output planetary carrier hub/park gear. Another design provides for mounting a sensor at a multi-piece transfer gear face.

Abstract: A damper structure for a gear device includes a first gear (2) mounted to turn with respect to a shaft (1) in a circumferential direction, a second gear (3) mounted on the shaft (1) to rotate integrally, a stopper rubber (33) mounted on the second gear (3) to face the first gear (2), and a pressing protrusion (24) at the first gear (2) to face the second gear (3). The stopper rubber (33) is configured to be elastically deformed by pressing the pressing protrusion (24) in a circumferential direction of the second gear (3) during rotation of the first gear (2) and be restored to the initial shape by separating the pressing protrusion (24) during stop of the first gear (2). A recess (25) for accumulating lubricating oil in the first gear (2) is formed to face the stopper rubber (33).

Abstract: An instrumental unit includes: a step motor; a gear including: a gear body rotated by torque of the step motor, the gear body including a first surface formed with a recess and a second surface opposite to the first surface; and a rotary shaft projecting from the first and second surfaces; a controlling spring accommodated in the recess, a center of the controlling spring through which the rotary shaft projects, the controlling spring having lengths in long and short axis directions orthogonal to each other and having a line-symmetric shape with respect to each of the long and short axis directions; and a case accommodating the step motor, the gear body and the controlling spring, an inner surface of the case including: a first portion supporting the second surface; and a second portion pressing the controlling spring in the recess of the first surface.