US20040095016A1 - Threaded mechanism with rolling bodies and drive device of an automotive axle guide module - Google Patents
Threaded mechanism with rolling bodies and drive device of an automotive axle guide module Download PDFInfo
- Publication number
- US20040095016A1 US20040095016A1 US10/473,265 US47326503A US2004095016A1 US 20040095016 A1 US20040095016 A1 US 20040095016A1 US 47326503 A US47326503 A US 47326503A US 2004095016 A1 US2004095016 A1 US 2004095016A1
- Authority
- US
- United States
- Prior art keywords
- rolling bodies
- threaded mechanism
- radial
- axial
- spindle nut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 47
- 230000007246 mechanism Effects 0.000 title claims abstract description 46
- 238000013016 damping Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 230000002349 favourable effect Effects 0.000 description 3
- 230000036316 preload Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0421—Electric motor acting on or near steering gear
- B62D5/0424—Electric motor acting on or near steering gear the axes of motor and final driven element of steering gear, e.g. rack, being parallel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0442—Conversion of rotational into longitudinal movement
- B62D5/0445—Screw drives
- B62D5/0448—Ball nuts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
- F16H2025/2445—Supports or other means for compensating misalignment or offset between screw and nut
Definitions
- the present invention generally relates to threaded mechanisms and more particularly relates to threaded mechanisms with interposed rolling bodies.
- Radial forces may be produced in threaded mechanisms with rolling bodies in different applications. In many applications, these radial forces, give rise to premature wear of the threaded mechanism. For example, in steering gears for vehicles, radial forces can act on the steering rod due to the travel-responsive inclined position of the steering tie rods coupled to the wheels, said radial forces producing friction forces in the bearings and cause the entire steering rod to deflect.
- An object of the present invention is to develop a threaded mechanism with rolling bodies and a drive mechanism of an automotive vehicle axle guide module in such a manner that the mounting support of a spindle nut is exposed to an evenly distributed load.
- this object is achieved in that in a threaded mechanism with rolling bodies, which includes a spindle rod, a spindle nut enclosing the said spindle rod at least in part, and a number of interposed rolling bodies, there is provision of an axial and radial mounting support for the spindle nut that is so designed as to allow both tilting movements of the spindle nut about its longitudinal axis and radial movements transversely relative to its longitudinal axis.
- the threaded mechanism with rolling bodies of the invention it is essential for the threaded mechanism with rolling bodies of the invention that an axial and radial mounting support is provided for a spindle nut that is operatively connected to the spindle rod by the intermediary of rolling bodies, with said mounting support permitting tilting movements of the spindle nut about its longitudinal axis and radial movements of the spindle nut transversely relative to its longitudinal axis.
- the threaded mechanism with rolling bodies of the invention allows achieving an evenly distributed load on the mounting support. This means that defined flexibility is ensured and a defined radial clearance admitted in addition.
- At least one axial roller bearing is provided for the axial mounting support of the spindle nut having a radial flange, the frontal ends of which are designed as an abutment for the axial roller bearing. This renders it possible that the mounting support in the axial bearing is evenly loaded.
- the axial mounting support is provided on a housing that is designed on facing frontal ends as an abutment for the axial roller bearing.
- the housing includes two housing shells subdivided transversely relative to the axis of rotation of the threaded spindle, and each one axial roller bearing is interposed between the radial flange and each of the housing shells.
- the two housing shells accommodate the axial bearings in a clearance-free manner according to a favorable aspect of the invention.
- facing frontal ends of legs of the housing are configured as an abutment for axial bearing rings of the axial roller bearings.
- the facing frontal ends of the legs include projecting, convexly shaped abutments for the axial bearing rings of the axial roller bearings. These abutments are used to ensure defined flexibility by permitting a defined tilting of the axial bearing rings and thus of the spindle nut.
- the legs are elastically deflectable.
- the legs and also the radial flange are elastically deflectable.
- a radial roller bearing is arranged for the radial mounting support of the spindle nut according to a preferred embodiment of the invention.
- a bearing seat being designed on the housing is provided for the radial roller bearing, and a radial clearance is arranged between the bearing seat and the radial roller bearing.
- a damping element for damping radial movements of the spindle nut is arranged between the housing and the radial roller bearing.
- the bearing seat for the radial roller bearing has a hollow-cylindrical design and includes a circumferential groove housing a rubber-elastic, annularly closed damping element, which at least partly projects from the groove in a radially inward direction.
- the rolling bodies of the threaded mechanism with rolling bodies have a spherical design.
- a drive device of an automotive vehicle axle guide module with a threaded mechanism with rolling bodies of the invention being characterized in that the drive device includes a rotary drive that is connected to the spindle nut in terms of driving by way of a flexible torque clutch.
- the threaded spindle of the threaded mechanism with rolling bodies is arranged in an axial direction behind a movable component of the automotive vehicle axle guide module that is connected or connectable to a steering wheel operable by a driver and, by displacement, effects turning of steerable vehicle wheels.
- the movable component of the automotive vehicle axle guide module is a toothed rack to which the threaded spindle is rigidly connected.
- FIG. 1 is the threaded mechanism of the present invention including rolling bodies along the longitudinal axis, with a cross-section taken through the spindle nut.
- FIG. 2 is a cross-sectional view of the threaded mechanism with rolling bodies shown in FIG. 1 transversely to the longitudinal axis in the area of the spindle nut.
- FIG. 3 is a perspective view of the threaded mechanism with rolling bodies shown in FIG. 1.
- FIG. 4 is a cutout of the threaded mechanism with rolling bodies shown in FIG. 1, with a cross-section taken through the spindle nut along the longitudinal axis of the threaded mechanism with rolling bodies.
- FIG. 5 is an enlarged view of a cutout of the spindle nut shown in FIG. 4.
- FIG. 6 is a schematic view of the possible movements of the threaded mechanism with rolling bodies.
- the threaded mechanism with rolling bodies illustrated in FIG. 1, FIG. 2, and FIG. 3 is an independent functional subassembly wherein a spindle rod ( 1 ) could be part of a toothed rack subassembly of an automotive vehicle axle guide module.
- the threaded mechanism with rolling bodies comprises a ball screw ( 2 ) and spherical rolling bodies ( 3 ) between the spindle rod ( 1 ) and a spindle nut ( 4 ). It is used herein as a rotation/translation gear unit of the drive device of the axle guide module.
- the threaded mechanism with rolling bodies is designed by a corresponding mounting support ( 5 ) of the spindle nut ( 4 ) in such a manner that both tilting movements of the spindle nut ( 4 ) about its longitudinal axis and radial movements transversely relative to its longitudinal axis are permitted.
- the mounting support ( 5 ) of the spindle nut ( 4 ) is illustrated in detail in FIG. 4 and FIG. 5.
- the axial mounting support of the spindle nut ( 4 ) is carried out by means of two axial roller bearings ( 6 ) interposed between a radial flange ( 7 ) and two housing shells ( 8 ) subdivided transversely relative to the longitudinal axis of the threaded spindle ( 1 ).
- This mounting support is generally clearance-free.
- Legs ( 9 ) and, as the case may be, the radial flange ( 7 ) are elastically deflectable and permit tilting movement of the spindle nut ( 4 ) by tilting of the axial roller bearings ( 6 ) or the axial bearing rings ( 11 ) in the range of the elastic deformation.
- the radial mounting support of the spindle nut ( 4 ) is carried out by means of a radial roller bearing ( 12 ), which is arranged on a bearing seat ( 13 ) designed on the housing shells ( 8 ), with a radial clearance (R) provided between the housing shells ( 8 ) and the radial roller bearing ( 12 ).
- a damping element ( 14 ) Arranged between the housing shells ( 8 ) and the radial roller bearing ( 12 ) is a damping element ( 14 ) that is used, on the one hand, to prevent co-rotation of the housing shells ( 8 ) and thus to safeguard the function of the bearing and, on the other hand, serves for dampening radial movements of the spindle nut.
- the bearing seat ( 13 ) for the radial roller bearing ( 12 ) has a hollow-cylindrical design and includes a circumferential groove ( 15 ) in which the damping element ( 14 ) is incorporated.
- the damping element ( 14 ) is preferably an O-ring made of a rubber-elastic material and projects at least partly from said groove in a radially inward direction.
- the spindle rod ( 1 ) when the threaded mechanism of the present invention is incorporated into an automatic vehicle axle guide, the spindle rod ( 1 ) can deform, when exposed to the load of radial forces ( 17 ), and a corresponding elastic line ( 18 ) is produced. If the spindle rod ( 1 ) was hindered by a bending-resistant mounting support of the spindle nut ( 4 ) to effect a certain tilt ( 38 ) about the imaginary axis (X), very high radial forces would be exerted on the bearings due to the length of the bearing. These radial forces can cause a poor mechanical efficiency or lead to the destruction of individual components. In addition, an unsymmetrical load of the ball tracks ( 2 ) would occur in the screw thread shown in FIG. 1 and reduce the load capacities and useful life of the threaded mechanism.
- the entire threaded mechanism is pre-assembled in a ring ( 16 ) with a defined preload of the two housing shells ( 8 ), thus forming a subassembly that is easy to integrate at a later time.
- the preload of the axial roller bearing ( 6 ) is preferably achieved by calking ring ( 16 ) within axial limits. Calking is limited by measuring the stall torque of the spindle nut ( 4 ). It is also possible to realize the connection by a screw coupling or other known types of connection.
- Ring ( 16 ) is stationarily fitted to the automotive vehicle axle guide module.
- the threaded mechanism with rolling bodies is then a subassembly of a drive device with a rotary drive that is connected in terms of driving to the spindle nut ( 4 ), preferably by way of a flexible torque clutch.
- the threaded spindle ( 1 ) of the threaded mechanism with rolling bodies is movable by the spindle nut ( 4 ), with the result that the toothed rack arranged behind it in an axial direction is entrained and brings about turning of steerable vehicle wheels.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Power Steering Mechanism (AREA)
- Transmission Devices (AREA)
- Support Of The Bearing (AREA)
- Pulleys (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
- The present invention generally relates to threaded mechanisms and more particularly relates to threaded mechanisms with interposed rolling bodies.
- Radial forces may be produced in threaded mechanisms with rolling bodies in different applications. In many applications, these radial forces, give rise to premature wear of the threaded mechanism. For example, in steering gears for vehicles, radial forces can act on the steering rod due to the travel-responsive inclined position of the steering tie rods coupled to the wheels, said radial forces producing friction forces in the bearings and cause the entire steering rod to deflect.
- An object of the present invention is to develop a threaded mechanism with rolling bodies and a drive mechanism of an automotive vehicle axle guide module in such a manner that the mounting support of a spindle nut is exposed to an evenly distributed load.
- According to the invention, this object is achieved in that in a threaded mechanism with rolling bodies, which includes a spindle rod, a spindle nut enclosing the said spindle rod at least in part, and a number of interposed rolling bodies, there is provision of an axial and radial mounting support for the spindle nut that is so designed as to allow both tilting movements of the spindle nut about its longitudinal axis and radial movements transversely relative to its longitudinal axis.
- Consequently, it is essential for the threaded mechanism with rolling bodies of the invention that an axial and radial mounting support is provided for a spindle nut that is operatively connected to the spindle rod by the intermediary of rolling bodies, with said mounting support permitting tilting movements of the spindle nut about its longitudinal axis and radial movements of the spindle nut transversely relative to its longitudinal axis. Advantageously, the threaded mechanism with rolling bodies of the invention allows achieving an evenly distributed load on the mounting support. This means that defined flexibility is ensured and a defined radial clearance admitted in addition.
- In a preferred embodiment of the invention, at least one axial roller bearing is provided for the axial mounting support of the spindle nut having a radial flange, the frontal ends of which are designed as an abutment for the axial roller bearing. This renders it possible that the mounting support in the axial bearing is evenly loaded.
- According to a preferred embodiment of the invention, the axial mounting support is provided on a housing that is designed on facing frontal ends as an abutment for the axial roller bearing.
- According to a preferred embodiment of the invention, the housing includes two housing shells subdivided transversely relative to the axis of rotation of the threaded spindle, and each one axial roller bearing is interposed between the radial flange and each of the housing shells.
- The two housing shells accommodate the axial bearings in a clearance-free manner according to a favorable aspect of the invention.
- According to a favorable aspect of the invention, facing frontal ends of legs of the housing are configured as an abutment for axial bearing rings of the axial roller bearings.
- It is arranged for according to a preferred embodiment of the invention that the facing frontal ends of the legs include projecting, convexly shaped abutments for the axial bearing rings of the axial roller bearings. These abutments are used to ensure defined flexibility by permitting a defined tilting of the axial bearing rings and thus of the spindle nut.
- According to a preferred embodiment of the invention, the legs are elastically deflectable. Preferably, the legs and also the radial flange are elastically deflectable.
- A radial roller bearing is arranged for the radial mounting support of the spindle nut according to a preferred embodiment of the invention.
- According to a preferred embodiment of the invention, a bearing seat being designed on the housing is provided for the radial roller bearing, and a radial clearance is arranged between the bearing seat and the radial roller bearing.
- According to a preferred embodiment of the invention, a damping element for damping radial movements of the spindle nut is arranged between the housing and the radial roller bearing.
- According to a preferred embodiment of the invention, the bearing seat for the radial roller bearing has a hollow-cylindrical design and includes a circumferential groove housing a rubber-elastic, annularly closed damping element, which at least partly projects from the groove in a radially inward direction.
- According to a preferred embodiment of the invention, the rolling bodies of the threaded mechanism with rolling bodies have a spherical design.
- This object is likewise achieved by a drive device of an automotive vehicle axle guide module with a threaded mechanism with rolling bodies of the invention, being characterized in that the drive device includes a rotary drive that is connected to the spindle nut in terms of driving by way of a flexible torque clutch.
- According to a preferred embodiment of the invention, the threaded spindle of the threaded mechanism with rolling bodies is arranged in an axial direction behind a movable component of the automotive vehicle axle guide module that is connected or connectable to a steering wheel operable by a driver and, by displacement, effects turning of steerable vehicle wheels.
- According to a preferred embodiment of the invention, the movable component of the automotive vehicle axle guide module is a toothed rack to which the threaded spindle is rigidly connected.
- FIG. 1 is the threaded mechanism of the present invention including rolling bodies along the longitudinal axis, with a cross-section taken through the spindle nut.
- FIG. 2 is a cross-sectional view of the threaded mechanism with rolling bodies shown in FIG. 1 transversely to the longitudinal axis in the area of the spindle nut.
- FIG. 3 is a perspective view of the threaded mechanism with rolling bodies shown in FIG. 1.
- FIG. 4 is a cutout of the threaded mechanism with rolling bodies shown in FIG. 1, with a cross-section taken through the spindle nut along the longitudinal axis of the threaded mechanism with rolling bodies.
- FIG. 5 is an enlarged view of a cutout of the spindle nut shown in FIG. 4.
- FIG. 6 is a schematic view of the possible movements of the threaded mechanism with rolling bodies.
- The threaded mechanism with rolling bodies illustrated in FIG. 1, FIG. 2, and FIG. 3 is an independent functional subassembly wherein a spindle rod (1) could be part of a toothed rack subassembly of an automotive vehicle axle guide module. The threaded mechanism with rolling bodies comprises a ball screw (2) and spherical rolling bodies (3) between the spindle rod (1) and a spindle nut (4). It is used herein as a rotation/translation gear unit of the drive device of the axle guide module. The threaded mechanism with rolling bodies is designed by a corresponding mounting support (5) of the spindle nut (4) in such a manner that both tilting movements of the spindle nut (4) about its longitudinal axis and radial movements transversely relative to its longitudinal axis are permitted.
- The mounting support (5) of the spindle nut (4) is illustrated in detail in FIG. 4 and FIG. 5. The axial mounting support of the spindle nut (4) is carried out by means of two axial roller bearings (6) interposed between a radial flange (7) and two housing shells (8) subdivided transversely relative to the longitudinal axis of the threaded spindle (1). This mounting support is generally clearance-free. But a tilting movement of the spindle nut (4) about its longitudinal axis is rendered possible by legs (9) of the housing shells (8), which include convexly shaped abutments (10) for axial bearing rings (11) of the axial roller bearings (6), said abutments projecting from facing frontal ends of said legs. Legs (9) and, as the case may be, the radial flange (7) are elastically deflectable and permit tilting movement of the spindle nut (4) by tilting of the axial roller bearings (6) or the axial bearing rings (11) in the range of the elastic deformation. This achieves an elastic mounting support in contrast to a coaxial stiff connection to the spindle rod (1). The radial mounting support of the spindle nut (4) is carried out by means of a radial roller bearing (12), which is arranged on a bearing seat (13) designed on the housing shells (8), with a radial clearance (R) provided between the housing shells (8) and the radial roller bearing (12). Arranged between the housing shells (8) and the radial roller bearing (12) is a damping element (14) that is used, on the one hand, to prevent co-rotation of the housing shells (8) and thus to safeguard the function of the bearing and, on the other hand, serves for dampening radial movements of the spindle nut. The bearing seat (13) for the radial roller bearing (12) has a hollow-cylindrical design and includes a circumferential groove (15) in which the damping element (14) is incorporated. The damping element (14) is preferably an O-ring made of a rubber-elastic material and projects at least partly from said groove in a radially inward direction.
- As shown in FIG. 6, when the threaded mechanism of the present invention is incorporated into an automatic vehicle axle guide, the spindle rod (1) can deform, when exposed to the load of radial forces (17), and a corresponding elastic line (18) is produced. If the spindle rod (1) was hindered by a bending-resistant mounting support of the spindle nut (4) to effect a certain tilt (38) about the imaginary axis (X), very high radial forces would be exerted on the bearings due to the length of the bearing. These radial forces can cause a poor mechanical efficiency or lead to the destruction of individual components. In addition, an unsymmetrical load of the ball tracks (2) would occur in the screw thread shown in FIG. 1 and reduce the load capacities and useful life of the threaded mechanism.
- Induced by the elastic line (18), the axial roller bearings (6) and the axial bearing rings (11), due to the defined elastic deformability of the legs (9), will oscillate to balance the unsymmetrical stress, and the spindle nut (4) can align itself to the elastic line (18). As this occurs, the spherically and convexly configured abutment surfaces (10) of the legs (9) will transmit the acting axial force onto the axial roller bearings (6) always at a right angle and centrically through the axial bearing rings (11), also by deforming the legs (9) and possibly the radial flange (7). This renders the load on the rolling bodies (3) more uniform, increases their load capacity, the efficiency and total useful life of the axial roller bearings (6).
- The radial escape of the spindle rod (1) and the spindle nut (4) is intercepted by the integrated radial roller bearing (12) when an integrated clearance (R) is exceeded. The spindle rod is stabilized radially in its center when increased forces prevail. This is because the radial roller bearing (12), retained by the O-ring (14), runs without load in a defined range, dependent on clearance (R). As a whole, favorable improvements of the total efficiency and the response characteristic of the threaded spindle mechanism are achieved by the radial and flexible drive and bearing of the present invention. In order to ensure the zero backlash of the threaded mechanism with rolling bodies, the entire threaded mechanism is pre-assembled in a ring (16) with a defined preload of the two housing shells (8), thus forming a subassembly that is easy to integrate at a later time. The preload of the axial roller bearing (6) is preferably achieved by calking ring (16) within axial limits. Calking is limited by measuring the stall torque of the spindle nut (4). It is also possible to realize the connection by a screw coupling or other known types of connection. Ring (16) is stationarily fitted to the automotive vehicle axle guide module. The threaded mechanism with rolling bodies is then a subassembly of a drive device with a rotary drive that is connected in terms of driving to the spindle nut (4), preferably by way of a flexible torque clutch. The threaded spindle (1) of the threaded mechanism with rolling bodies is movable by the spindle nut (4), with the result that the toothed rack arranged behind it in an axial direction is entrained and brings about turning of steerable vehicle wheels.
Claims (16)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10115316 | 2001-03-28 | ||
DE101-15-316.3 | 2001-03-28 | ||
PCT/EP2002/003536 WO2002077487A2 (en) | 2001-03-28 | 2002-03-28 | Threaded mechanism with rolling bodies and drive device of an automotive axle guide module |
Publications (1)
Publication Number | Publication Date |
---|---|
US20040095016A1 true US20040095016A1 (en) | 2004-05-20 |
Family
ID=7679402
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/473,374 Expired - Fee Related US7044263B2 (en) | 2001-03-28 | 2002-03-28 | Motorized system for vehicle steering |
US10/473,265 Abandoned US20040095016A1 (en) | 2001-03-28 | 2002-03-28 | Threaded mechanism with rolling bodies and drive device of an automotive axle guide module |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/473,374 Expired - Fee Related US7044263B2 (en) | 2001-03-28 | 2002-03-28 | Motorized system for vehicle steering |
Country Status (6)
Country | Link |
---|---|
US (2) | US7044263B2 (en) |
EP (2) | EP1373052B1 (en) |
JP (2) | JP4315683B2 (en) |
AU (1) | AU2002304795A1 (en) |
DE (4) | DE10291199D2 (en) |
WO (2) | WO2002077487A2 (en) |
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US9702419B2 (en) | 2014-11-07 | 2017-07-11 | Means Industries, Inc. | Electromechanical system for controlling the operating mode of a selectable clutch assembly and overrunning coupling and electromechanical control assembly using the system |
US9909631B2 (en) | 2014-11-07 | 2018-03-06 | Means Industries, Inc. | Apparatus for controllably actuating a selectable coupling assembly having multiple operating modes |
US9822825B2 (en) | 2014-11-07 | 2017-11-21 | Means Industries, Inc. | Actuator controller to controllably supply DC power to a bi-directional electromechanical actuator |
US10487887B2 (en) | 2014-11-07 | 2019-11-26 | Means Industries, Inc. | Electromechanical apparatus for use with a controllable coupling assembly and coupling and electromechanical control assembly |
DE102016113803A1 (en) | 2015-07-28 | 2017-02-02 | Steering Solutions Ip Holding Corporation | PULLEY ASSEMBLY WITH IDLE ROLL, POWER SUPPORT SYSTEM WITH PULLEY ASSEMBLY AND METHOD |
DE102016113802A1 (en) * | 2015-07-28 | 2017-02-02 | Steering Solutions Ip Holding Corporation | Power assist system with spindle nut, brake booster actuator and method |
WO2017091433A1 (en) * | 2015-11-25 | 2017-06-01 | Means Industries, Inc. | Electromechanical apparatus for use with a controllable coupling assembly and coupling and electromechanical control assembly |
DE102016209161B4 (en) | 2016-05-25 | 2019-08-01 | Zf Friedrichshafen Ag | Adjusting device and use of the adjusting device |
DE102016212308B4 (en) | 2016-07-06 | 2018-02-22 | Thyssenkrupp Ag | A method for producing a rack for a steering gear of a motor vehicle, and rack |
DE102016212307B4 (en) * | 2016-07-06 | 2018-02-22 | Thyssenkrupp Ag | Method for producing a rack for a motor vehicle, and rack for a steering gear |
DE102016212304B4 (en) | 2016-07-06 | 2018-02-22 | Thyssenkrupp Ag | A method for producing a rack for a steering gear of a motor vehicle, and rack |
DE102016212303A1 (en) | 2016-07-06 | 2018-01-11 | Thyssenkrupp Ag | Rack and a method for producing a rack for a steering gear of a motor vehicle |
DE102016119367A1 (en) * | 2016-10-12 | 2018-04-12 | Robert Bosch Gmbh | STEERING SYSTEM |
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DE102017211672A1 (en) * | 2017-07-07 | 2019-01-10 | Zf Friedrichshafen Ag | Adjustment device for a chassis of a motor vehicle and rear axle steering |
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TWI651218B (en) * | 2018-03-30 | 2019-02-21 | 柯連枝 | Electric vehicle gearbox structure |
US11885100B2 (en) * | 2018-06-05 | 2024-01-30 | Doosan Bobcat North America Inc. | Quad track skid-steer loader |
DE102018209543A1 (en) * | 2018-06-14 | 2019-12-19 | Ford Global Technologies, Llc | Steering gear for a motor vehicle |
DE102018222832A1 (en) * | 2018-12-21 | 2020-06-25 | Thyssenkrupp Ag | Auxiliary drive for a steering column and steering column for a motor vehicle |
US11285991B2 (en) * | 2019-07-22 | 2022-03-29 | Steering Solutions Ip Holding Corporation | Electromagnetic damping system for steering system |
DE102019125792B4 (en) * | 2019-09-25 | 2021-12-16 | Crown Equipment Corp. | Electrically operated steering system for a vehicle |
DE102020201058A1 (en) * | 2020-01-29 | 2021-07-29 | Thyssenkrupp Ag | Steering column for a motor vehicle |
DE102022210633A1 (en) | 2022-10-07 | 2024-04-18 | Zf Automotive Germany Gmbh | Spindle device and steering device with such a spindle device |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2728320A (en) * | 1953-06-18 | 1955-12-27 | Champion Motors Co | Control mechanism for outboard motors |
US4593781A (en) * | 1983-12-16 | 1986-06-10 | Automobiles Citroen | Motor vehicle steering system assisted by an electric motor |
US4666014A (en) * | 1986-05-08 | 1987-05-19 | Trw Inc. | Floating ball-nut for an electric assist steering system |
US4773497A (en) * | 1986-05-08 | 1988-09-27 | Trw Inc. | Floating ball-nut for an electric assist steering system |
US5083626A (en) * | 1986-10-20 | 1992-01-28 | Honda Giken Kogyo Kabushiki Kaishi | Rear wheel steering device for vehicle with four steerable wheels |
US6186268B1 (en) * | 1998-01-20 | 2001-02-13 | Mitsuba Corporation | Electric power steering unit |
US6227064B1 (en) * | 1997-02-28 | 2001-05-08 | Koyo Seiko Co., Ltd. | Power steering apparatus |
US6378646B1 (en) * | 2000-08-22 | 2002-04-30 | Trw Inc. | Pivotal ballnut connection for a power assisted steering system |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6025853A (en) * | 1983-07-22 | 1985-02-08 | Nippon Seiko Kk | Electrical power steering device |
US4742882A (en) * | 1986-03-12 | 1988-05-10 | Honda Giken Kogyo Kabushiki Kaisha | Motor-driven power steering device |
JP2966818B2 (en) | 1997-07-01 | 1999-10-25 | 本田技研工業株式会社 | Electric power steering device |
JP2000297855A (en) * | 1999-04-15 | 2000-10-24 | Ntn Corp | Electric power steering device |
JP4056172B2 (en) * | 1999-04-01 | 2008-03-05 | 株式会社ショーワ | Electric power steering device |
WO2002102640A2 (en) * | 2001-06-19 | 2002-12-27 | Delphi Technologies, Inc. | Steer-by-wire-handwheel actuator |
US6488115B1 (en) * | 2001-08-01 | 2002-12-03 | Delphi Technologies, Inc. | Apparatus and method for steering a vehicle |
-
2002
- 2002-03-28 AU AU2002304795A patent/AU2002304795A1/en not_active Abandoned
- 2002-03-28 JP JP2002575288A patent/JP4315683B2/en not_active Expired - Fee Related
- 2002-03-28 DE DE10291199T patent/DE10291199D2/en not_active Expired - Fee Related
- 2002-03-28 EP EP02714196A patent/EP1373052B1/en not_active Expired - Lifetime
- 2002-03-28 WO PCT/EP2002/003536 patent/WO2002077487A2/en active IP Right Grant
- 2002-03-28 DE DE50214787T patent/DE50214787D1/en not_active Expired - Lifetime
- 2002-03-28 JP JP2002575505A patent/JP4202761B2/en not_active Expired - Fee Related
- 2002-03-28 DE DE10291249T patent/DE10291249D2/en not_active Expired - Lifetime
- 2002-03-28 US US10/473,374 patent/US7044263B2/en not_active Expired - Fee Related
- 2002-03-28 EP EP02732538A patent/EP1384016B1/en not_active Expired - Lifetime
- 2002-03-28 WO PCT/EP2002/003537 patent/WO2002076808A1/en active Application Filing
- 2002-03-28 DE DE50209973T patent/DE50209973D1/en not_active Expired - Lifetime
- 2002-03-28 US US10/473,265 patent/US20040095016A1/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2728320A (en) * | 1953-06-18 | 1955-12-27 | Champion Motors Co | Control mechanism for outboard motors |
US4593781A (en) * | 1983-12-16 | 1986-06-10 | Automobiles Citroen | Motor vehicle steering system assisted by an electric motor |
US4666014A (en) * | 1986-05-08 | 1987-05-19 | Trw Inc. | Floating ball-nut for an electric assist steering system |
US4773497A (en) * | 1986-05-08 | 1988-09-27 | Trw Inc. | Floating ball-nut for an electric assist steering system |
US5083626A (en) * | 1986-10-20 | 1992-01-28 | Honda Giken Kogyo Kabushiki Kaishi | Rear wheel steering device for vehicle with four steerable wheels |
US6227064B1 (en) * | 1997-02-28 | 2001-05-08 | Koyo Seiko Co., Ltd. | Power steering apparatus |
US6186268B1 (en) * | 1998-01-20 | 2001-02-13 | Mitsuba Corporation | Electric power steering unit |
US6378646B1 (en) * | 2000-08-22 | 2002-04-30 | Trw Inc. | Pivotal ballnut connection for a power assisted steering system |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050121251A1 (en) * | 2003-05-06 | 2005-06-09 | Nsk Ltd. | Belt speed reducing apparatus for electric power steering apparatus and electric power steering apparatus |
US7591204B2 (en) | 2003-05-06 | 2009-09-22 | Nsk Ltd. | Belt speed reducing apparatus for electric power steering apparatus and electric power steering apparatus |
DE102007002964B4 (en) | 2006-10-02 | 2022-05-12 | Hyundai Motor Company | Actuating element for an AGCS of a vehicle |
US8997597B2 (en) | 2010-03-22 | 2015-04-07 | Zf Lenksysteme Gmbh | Power steering system |
US20130248280A1 (en) * | 2010-12-16 | 2013-09-26 | Thyssenkrupp Presta Ag | Power steering system with spindle drive |
DE102010056049A1 (en) * | 2010-12-23 | 2012-06-28 | Volkswagen Ag | Gearbox e.g. steering gearbox for use in steering system of motor vehicle, has bearing outer ring which is clamped between alignment disc and clamping element and is fixed to gearbox housing through fasteners |
DE102010056049B4 (en) | 2010-12-23 | 2021-08-12 | Volkswagen Ag | Transmission, automotive steering and motor vehicle |
CN109795546A (en) * | 2019-04-09 | 2019-05-24 | 江苏罡阳转向***有限公司 | A kind of ball-and-nut steering gear of the nut with support construction |
CN114450505A (en) * | 2019-10-07 | 2022-05-06 | 舍弗勒技术股份两合公司 | Planetary roller screw transmission device |
Also Published As
Publication number | Publication date |
---|---|
WO2002076808A1 (en) | 2002-10-03 |
EP1384016A2 (en) | 2004-01-28 |
DE10291249D2 (en) | 2004-04-15 |
US20040104067A1 (en) | 2004-06-03 |
US7044263B2 (en) | 2006-05-16 |
JP4202761B2 (en) | 2008-12-24 |
DE10291199D2 (en) | 2004-04-15 |
WO2002077487A3 (en) | 2003-11-20 |
WO2002077487A2 (en) | 2002-10-03 |
EP1373052A1 (en) | 2004-01-02 |
JP2004522093A (en) | 2004-07-22 |
EP1384016B1 (en) | 2007-04-18 |
DE50209973D1 (en) | 2007-05-31 |
DE50214787D1 (en) | 2011-01-05 |
AU2002304795A1 (en) | 2002-10-08 |
JP4315683B2 (en) | 2009-08-19 |
EP1373052B1 (en) | 2010-11-24 |
JP2004523421A (en) | 2004-08-05 |
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