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Speed Reducer
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Speed Reducer patents



      
           
This page is updated frequently with new Speed Reducer-related patent applications. Subscribe to the Speed Reducer RSS feed to automatically get the update: related Speed RSS feeds. RSS updates for this page: Speed Reducer RSS RSS


Power assist apparatus

Power steering device and backlash adjuster

Date/App# patent app List of recent Speed Reducer-related patents
07/17/14
20140196557
 Anti-backlash gear patent thumbnailnew patent Anti-backlash gear
A stiff anti-backlash gear unit comprising two or more high ratio reducer assemblies provides an energy efficient, low backlash, speed reducer. The gear unit is assembled in such a way as to eliminate backlash without any preloading and may be configured as a conventional, planetary or star gear with co-axial, spaced, angled or multiple output shafts..
07/10/14
20140190762
 Power assist apparatus patent thumbnailPower assist apparatus
A power assist apparatus includes an electric motor, a speed reducer, an annular torque sensor, a housing in which the speed reducer and the torque sensor are arranged, and an annular center aligning bracket. The housing includes a first housing element and a second housing element, and one of the first housing element and the second housing element is made of a synthetic resin.
06/26/14
20140174843
 Power steering device and backlash adjuster patent thumbnailPower steering device and backlash adjuster
In a power steering device employing both a worm speed reducer and a backlash adjuster for a worm gear of the speed reducer, the backlash adjuster has a slider configured to be movable in a longitudinal direction of a worm shaft, and a biasing member configured to bias the slider toward one side of the longitudinal direction of the worm shaft. Also provided is a guide member configured to bias the worm shaft in a direction for meshing with a worm wheel by a movement of the worm shaft in the meshing direction that the worm shaft approaches a rotation center of the worm wheel with a movement of the slider toward the one side of the longitudinal direction, and also configured to restrict a movement of the worm shaft in a direction opposite to the meshing direction of the worm shaft..
06/12/14
20140162826
 Motor assembly with speed reducer patent thumbnailMotor assembly with speed reducer
A motor assembly includes an electric motor and a speed reducing mechanism. The speed reducing mechanism includes: a housing; an internal gear supported by the inner diameter surface of the housing; eccentric disks capable of rotating inside the internal gear when the rotating shaft of the electric motor rotates; an output shaft having at the axial end thereof a cage rotatably disposed between the internal gear and the eccentric disks, the cage being arranged coaxially with the rotation axis of the eccentric disks; and rolling elements retained by the cage and meshing with internal teeth of the internal gear, the number of the rolling elements being smaller than the number of the internal teeth.
05/29/14
20140149000
Control system
A friction compensation control unit includes a contact state determination unit that determines the contact state of a speed reducer, a friction coefficient estimation unit that estimates a friction coefficient of a power column, and a frictional force estimation unit that estimates a frictional force generated in the power column. The contact state determination unit determines the contact state of the speed reducer based on a first assist torque command value, a detected steering torque, and an estimated load torque.
05/22/14
20140141918
 Reduction differential gear apparatus for electric vehicle patent thumbnailReduction differential gear apparatus for electric vehicle
An object is to reduce various losses occurring in a speed-reduction/differential gear apparatus for electric vehicles including a planetary-gear speed reducer and a differential device, thereby improving transmission efficiency of the driving force and increasing travel distance of the electric vehicle per battery charge. A speed-reduction/differential gear apparatus for electric vehicles includes a planetary-gear speed reducer and a differential device.
04/17/14
20140102235
 Speed reducer and electric power steering system patent thumbnailSpeed reducer and electric power steering system
A speed reducer for an electric power steering system includes a worm, a worm wheel, and a housing. Only a meshing section where the worm and the worm wheel mesh with each other and a space between the worm wheel and the housing are filled with grease.
03/27/14
20140084840
 Robot apparatus, robot control method, program, and recording medium patent thumbnailRobot apparatus, robot control method, program, and recording medium
A robot apparatus includes a rectangular wave generating portion arranged on the output side of a speed reducer, and configured to generate first output pulse signals upon driving of a joint. A control portion includes calculating portions and a motor control portion.
03/27/14
20140083794
 Power steering apparatus and speed reducer for power steering patent thumbnailPower steering apparatus and speed reducer for power steering
An apparatus for power steering of a vehicle, comprises: a worm gear arrangement including a worm shaft and a worm wheel engaged with the worm shaft; a bearing to support the worm shaft rotatably; a gear housing structure enclosing the worm gear arrangement, and defining a holder receiving portion; and a holder member arranged to hold the bearing, and fit movably radially in the holder receiving portion. A biasing mechanism urges the holder member or the bearing in a nearing direction toward the worm wheel.
02/06/14
20140033846
 Propulsive apparatus for electric vehicles patent thumbnailPropulsive apparatus for electric vehicles
A propulsive apparatus for use in an electric vehicle includes a gear rotatable by a propulsive motor and having first teeth, and a constant velocity joint having an outer member which includes a larger-diameter portion having second teeth on an outer wall surface thereof. The second teeth serve as part of a speed reducer mechanism which is thus interposed between the propulsive motor and the constant velocity joint.
01/30/14
20140027197
Electric power steering system
An electric power steering system includes a joint that connects a rotary shaft of an electric motor with a worm shaft of a speed reducer. The joint includes a first rotational element that has a boss into which a first end portion of the worm shaft is press-fitted, and a flange extending radially from the boss.
01/16/14
20140018203
Two-stage differential cycloidal speed reducer with a high reduction ratio
A two-stage differential cycloidal speed reducer with a high reduction ratio is provided, including: a plurality of supporting crank shafts; an input shaft including a first crank shaft portion and a second crank shaft portion; a first cycloidal gear provided on the first crank shaft portion; a second cycloidal gear provided on the second crank shaft portion and connected with the first cycloidal gear through the supporting crank shafts; a plurality of first ring pins provided around the outer circumference of the first cycloidal gear and in sliding contact with a plurality of teeth on the periphery of the first cycloidal gear; a first annular gear with the plurality of first ring pins; a plurality of second ring pins provided around the outer circumference of the second cycloidal gear and being in sliding contact with a plurality of teeth on the periphery of the second cycloidal gear; and a second annular gear with the plurality of second ring pins.. .
01/16/14
20140014052
Variable valve actuation apparatus of internal combustion engine
In a variable valve actuation apparatus with a speed reducer between a timing sprocket and a camshaft for changing a phase of the camshaft relative to the sprocket, while reducing normal-rotation/reverse-rotation of an electric motor, the speed reducer includes an eccentric rotation member connected to an output shaft of the motor, an annular member connected to the sprocket, a plurality of rollers installed between an inner toothed portion of the annular member and an outer peripheral surface of the eccentric rotation member, and a cage connected to the camshaft for circumferentially partitioning the respective rollers, while permitting a radial displacement of each roller. Depending on a dimension of a clearance space between the eccentric rotation member and the annular member, a suitable one of a plurality of roller sets, each having a different outside diameter, is selected, and then the selected rollers are installed..
01/09/14
20140007834
Assembly for a speed reducer of a rotary electric machine, and related heat-engine starter
Assembly (57) for a speed reducer of a rotary electric machine, comprising: a ring gear (46) secured to a transverse wall (58); a base plate (60) to be securely and rotatably mounted relative to a mounting (16) of the machine; an axially acting resilient means, such as an axially acting resilient disc (64); and an added hub (68) on which the transverse wall (58) of the ring gear (46), the base plate (60), and the resilient means (64) are mounted. The hub (68) has at least one first shoulder (71) for supporting the axially acting resilient means (64), and at least one second shoulder (72) for supporting the transverse wall (58) of the ring gear (46).
01/02/14
20140000993
Electromechanical brake system
Disclosed herein is an electromechanical brake system includes a base carrier provided with a pair of pad plates for application of pressure to a disc, a caliper housing supported by the base carrier to be movable forward and backward to apply pressure to the pad plates, a pressing member including a ball nut installed at the caliper housing to convert rotational motion into rectilinear motion to apply pressure to the pad plates and a ball screw coupled to the ball nut, a force sensor installed at the ball nut to sense load produced by the ball nut, a motor to produce rotational force to operate the pressing member, and a speed reducer connected to a rotating shaft of the motor to transfer driving force to the pressing member, wherein the speed reducer may be adapted to change a reduction ratio depending on presence of load sensed by the force sensor.. .
11/14/13
20130300264
Electric power steering apparatus
A control device is made more compact and an electric power steering apparatus achieving excellent ease of assembly and ease of mounting is provided by disposing the control device between a shaft of an electric motor and a gear shaft of a speed reduction structure. A control device (90) is disposed coaxially with an output shaft (11) of an electric motor (10) between the electric motor and a speed reducer, and has a heat sink (30), a power circuit board (40), a control circuit board (50), and a housing (70) in which to house the power circuit board and the control circuit board.
11/14/13
20130300222
Motor drive device for electric power steering apparatus
At least one of a motor drive control unit (30) and a motor (10) is provided with at least two screw holes (53) for fixation to a gear (speed reducer) of an electric power steering apparatus. Let l1 be a maximum value of a distance between center points of the screw holes (53) and l2 be a distance between an end face (d) of a stator iron core (12) in an axial direction on a farther side from the gear and an attachment surface (c) attached to a gear side, then a value of l1 is equal to or greater than a value of l2..
11/07/13
20130292994
In-wheel motor drive device
An object of the present invention is to provide an in-wheel motor driving device which has a deceased axial dimension and includes aluminum alloy housings having a minimum wall thickness for reduced weight while retaining good assemblability. An in-wheel motor driving device includes a wheel braking device.
11/07/13
20130292993
In-wheel motor drive device
An in wheel motor driving device which has a deceased axial dimension and includes aluminum alloy housings having a minimum wall thickness for reduced weight while retaining good assemblability. An in-wheel motor driving device includes: a motor section which has an output shaft; a wheel hub bearing section c; and a speed reducer section which connects the output shaft of the motor section and the wheel hub bearing section coaxially with each other.
10/03/13
20130255422
Drive apparatus and construction machine provided with same
A drive apparatus which is compact in a height direction and a diametrical direction and with which a sufficient air breather function can be obtained, and a construction machine including the drive apparatus. The drive apparatus includes an electric motor and a speed reducer.
10/03/13
20130255416
Drive apparatus and construction machine provided with same
A dry brake provided between a motor and a speed reducer and including a brake mechanism for applying a brake to a motor shaft and a brake housing surrounding a brake chamber housing the brake mechanism. The brake housing includes a partition wall that partitions a speed reducer chamber from the brake chamber when penetrated by the motor shaft.
09/26/13
20130250303
Speed reducer for industrial robot
A speed reducer for an industrial robot includes a speed reducer main body and a lubricant deterioration sensor for detecting deterioration of a lubricant in the speed reducer main body. The lubricant deterioration sensor includes a light emitting element for emitting light, a color light receiving element for detecting a color of received light, a clearance forming member forming an oil clearance in which the lubricant enters, and a support member supporting the light emitting element, the color light receiving element, and the clearance forming member.
09/26/13
20130250281
Lubricant deterioration sensor
A speed reducer for an industrial robot includes a speed reducer main body and a lubricant deterioration sensor for detecting deterioration of a lubricant in the speed reducer main body. The lubricant deterioration sensor includes a light emitting element for emitting light, a color light receiving element for detecting a color of received light, a clearance forming member forming an oil clearance in which the lubricant enters, and a support member supporting the light emitting element, the color light receiving element, and the clearance forming member.
09/05/13
20130231210
Drive apparatus and construction machine provided with same
A drive apparatus for a construction machine includes: a motor having a motor shaft; a speed reducer unit having a speed reducer output shaft and a casing and reducing speed of rotation force of the motor, and transmitting the force to an upper slewing body; and a cooler formed with a coolant path through which liquid or gas for cooling lubricating oil inside the casing passes as a cooling medium, wherein the motor and the speed reducer unit are provided in a row in an apparatus-axis direction such that the motor shaft and the speed reducer output shaft are arranged along the same line, and the cooler is provided in a row with the speed reducer unit in the apparatus-axis direction in a state where at least a part of the cooler is immersed in the lubricating oil, so as to enable heat exchange with the lubricating oil.. .
08/15/13
20130207573
Synchronous control apparatus for speed-reducing dc motor
The present invention relates to a synchronous control apparatus for speed-reducing dc motor, comprising a speed-reducing dc motor and a controller, wherein said speed-reducing dc motor comprises a motor and a speed reducer. Said speed-reducing motor is equipped with a speed detecting module to detect the actual rotational speed.
08/15/13
20130206087
Valve timing control apparatus for internal combustion engine
A valve timing control apparatus for an internal combustion engine, including a drive rotation member, a follower rotation member, an electric motor, and a speed reducer including an internal gear portion, an eccentric cam on an inner peripheral side of the internal gear portion, rollers disposed between the internal gear portion and the eccentric cam, and a cage rotatable relative to the internal gear portion by rotation of the eccentric cam. A motor output shaft is arranged in series relative to the eccentric cam in an axial direction thereof.
07/11/13
20130178320
Vehicle drive system
Two motor and planetary gear type speed reducers are disposed sequentially from an outer side in a width direction of a vehicle, whereby the speed reducers are disposed between the motors. A radially outer edge of a ring gear of one of the speed reducers is formed smaller than the smaller one of the two radially outermost edge portions of the motors.
06/13/13
20130151214
Simulator for estimating life of robot speed reducer
A simulator (10) for estimating a life of a speed reducer includes a rotation speed and load calculator (21) for simulating the operation program of a robot (12) and calculating the rotation speed of the robot speed reducers (g1-gm) and the load exerted on the individual speed reducers; a storage (22) for chronologically correlating the rotation speed and the load and storing the rotation speed and the load; a speed reducer life calculator (23) for calculating the life of the individual speed reducers, based on the rotation speed and the load; an operating ratio setter (24) for setting an operating ratio of the robot; and a speed reducer life estimator (25) for estimating the life of the speed reducers, based on the life of the individual speed reducers and the operating ratio.. .
05/23/13
20130125694
Multi-axis robot
A robot includes a first robot arm, a drive mechanism driving the first robot arm to rotate, a receiving box rotatably connected to the first robot arm. The drive mechanism includes a first drive member and a first speed reducer connected to the first drive member.
05/16/13
20130119748
In-wheel motor drive device
An object of the invention is to always maintain an outer pin holder and a housing in a speed reducer section at their predetermined positions, to prevent damage to such components as revolving members, outer circumferential engagers, and motion conversion mechanism upon a large axial load due to turning or sudden acceleration/deceleration, etc., and to eliminate rattling noise caused by the housing and the outer pin holder. A casing immobilizing member which is fixed to an inner surface of a speed reducer section casing and a housing immobilizing member which is fixed to an outer surface of a speed reducer section housing are provided between the speed reducer section casing and the speed reducer section housing.
04/18/13
20130095976
Wheel driving speed reducer
A wheel driving speed reducer includes a parallel shaft gear mechanism that includes a parallel shaft gear, a planetary gear mechanism that is provided on a rear stage of the parallel shaft gear mechanism and includes planetary gears and an internal gear with which the planetary gears internally mesh, and a casing that accommodates the parallel shaft gear mechanism and the planetary gear mechanism. A tooth portion of the parallel shaft gear protrudes and extends into a gap, which is formed between the casing and the internal gear or a member integrated with the internal gear, in an axial direction.
03/28/13
20130074636
Method of driving joint device
Provided is a method of driving a joint device suitably used for a robot joint with improved back drivability. A first motor and a second motor are fixedly connected to a first link.
03/07/13
20130058709
Connection structure between hollow output shaft and driven shaft, and speed reducer
There is provided a connection structure between a hollow output shaft of a speed reducer, which is provided with the hollow output shaft including a hollow portion, and a driven shaft of a counterpart machine inserted into the hollow portion of the hollow output shaft. The connection structure includes a communication passage through which the hollow portion of the hollow output shaft communicates with an internal space of the speed reducer.
03/07/13
20130057048
In-wheel motor driving device
An object of the present invention is to provide an in-wheel motor driving device which includes a highly adaptable suspension mounting portion, is light weighted, and has reduced drag friction at the time of steering operation. An in-wheel motor driving device comprises: a motor section a which rotates a motor-side rotation member; a speed reducer section b which reduces and transmits rotation of the motor-side rotation member to a wheel-side rotation member; and a wheel hub connected and fixed to the wheel-side rotation member.
03/07/13
20130056316
Electric cable drive device and electric brake device
An cable drive device (10) having a motor (m), a speed reducer (g), a nut member (26) connected to the speed reducer, a rod (32) screwed to the nut member (26) and guided by a guide member (34) so as not to rotate, a control cable (15) composed of an inner cable (45) connected to the rod and a guide tube (49) for guiding the inner cable, a sensor for detecting the amount of operation of the cable based on the amount of rotation of the speed reducer (g), and a load sensor (17) for detecting a load applied to the cable. An electric brake device can be obtained by connecting the control cable and a brake mechanism of the cable drive device (10)..
02/21/13
20130046409
Robot and robot system
A robot according to embodiments includes a speed reducer, a first shaft, a rotary electric machine, a second shaft, and a brake. The speed reducer reduces and outputs rotation to be input into an input unit.
02/21/13
20130042710
Speed reducing mechanism
A speed reducing mechanism includes a speed reducer and a bearing engaged with the speed reducer. The speed reducer includes a driving member, a first transmission member and a second transmission member.
02/14/13
20130041203
Blood flow assist devices, systems and methods
An implantable pump system for assisting blood flow includes a flexible conduit, at least one movable valve in fluid connection with the flexible conduit, a drive system comprising a rotary motor and a speed reducer operatively connected to the rotary motor; and a converter operatively connected to the drive system and operatively connected to the valve to drive the valve in a reciprocating linear manner. In a number of embodiments, the speed reducer includes a spur gear driving a ring gear, wherein the converter is operatively connected to the speed reducer..
02/14/13
20130037451
Conveyor jackshaft for variable slope vibrating screens
A compact mobile variable angle vibrating screen with an overhead feed conveyor drive system configured to accommodate nesting into the feedbox of the vibrating screen by use of a 90-degree input shaft speed reducer; a v-belt drive and a drive shaft coupling the two and a motor mounted in front of and perpendicular to the head pulley of the feed conveyor, all arranged in a configuration to nest within a feed box of the vibrating screen and to minimize the need for offset feeding with the conveyor.. .
02/14/13
20130036851
Industrial robot
An industrial robot may include a main body section, a first arm, a second arm, a third arm, a first speed reducer which connects the main body section and the first arm a second speed reducer which connects the first arm and the second arm, and a connecting mechanism which connects the input shaft of the first speed reducer and the input shaft of the second speed reducer, and a second drive motor which drives the third arm. The speed reduction ratio of the first and second speed reducer are set such that the movement loci of a third articulation section which connects the second and third arm are rectilinear.
02/07/13
20130035199
Apparatus and method for transferring torque
A traction drive apparatus is provided for transferring torque from an input rotating shaft to an in-line, or co-axial, output rotating shaft. More specifically, the invention is a gearless, friction drive, in-line, rotating speed reducer or speed increaser for use in a wide variety of rotating equipment applications.
02/07/13
20130035191
Speed reducer
A speed reducer is proposed whose rollers are axially long relative to the axial length of its cage to extend its lifespan. The speed reducer includes an input shaft (7) and an output shaft (11) arranged coaxial with each other with their ends facing each other.
01/31/13
20130025399
Robot and method for manufacturing the same
A robot according to an aspect of an embodiment includes: an articulated arm; and a speed reducer that is provided in a joint of the articulated arm. The articulated arm performs a multi-axis operation.
01/24/13
20130023374
Speed reducer incorporating portion structure, incorporating method, and eccentric oscillating type speed reducer
There is provided a speed reducer incorporating portion structure for a plurality of industrial machines in which an eccentric oscillating type speed reducer having an internal gear and an external gear that rotates in an oscillating manner while internally meshing with the internal gear is incorporated. The speed reducer may be incorporated in the plurality of industrial machines, respectively, so that the position of a meshing portion when the external gear is assembled to the internal gear has a specific phase relationship common to the plurality of industrial machines with respect to a specific part of an industrial machine in which the speed reducer is incorporated..
01/10/13
20130009450
In-wheel motor-driven device
An object of the present invention is to reduce an axial dimension of an in-wheel motor driving device in which a motor section a and a wheel hub bearing section c are connected coaxially in series via a speed reducer section b, thereby providing a large inside space of a vehicle as well as increasing freedom of routing a power supply wires. A terminal box for the power supply wires which supply power to the motor section a is disposed on the outer circumferential side surface of the housing which holds the motor section a.
01/03/13
20130006474
Steering angle sensor failure detection system
The present disclosure relates to a steering angle sensor failure detection system. More particularly, the present disclosure relates to a steering angle sensor failure detection system that can correctly detect a failure of a steering angle sensor which may be caused due to the slipping of a speed reducer..


Popular terms: [SEARCH]

Speed Reducer topics: Speed Reducer, Lubricant Deterioration, Internal Combustion Engine, Planetary Gear, Motor Housing, Combustion, Valve Timing Control, Synchronous, Accommodation, Calculator, Radial Direction, Gear Mechanism, Load Sensor

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This listing is a sample listing of patent applications related to Speed Reducer for is only meant as a recent sample of applications filed, not a comprehensive history. There may be associated servicemarks and trademarks related to these patents. Please check with patent attorney if you need further assistance or plan to use for business purposes. This patent data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Speed Reducer with additional patents listed. Browse our RSS directory or Search for other possible listings.
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