CN210592114U - Steering mechanism for vehicle - Google Patents
Steering mechanism for vehicle Download PDFInfo
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- CN210592114U CN210592114U CN201921428232.1U CN201921428232U CN210592114U CN 210592114 U CN210592114 U CN 210592114U CN 201921428232 U CN201921428232 U CN 201921428232U CN 210592114 U CN210592114 U CN 210592114U
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- planet carrier
- primary
- sun gear
- rolling bearing
- steering mechanism
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Abstract
The utility model discloses a steering mechanism for vehicle, include: the driving piece, speed reduction subassembly and output assembly, speed reduction unit mount is in first casing, the driving piece is connected with the one-level sun gear and rotates in order to drive the one-level sun gear, the one-level sun gear meshes with the one-level ring gear mutually through a plurality of one-level planet wheels, a plurality of one-level planet wheels are all established on the one-level planet carrier, the one-level planet carrier is connected with the second grade sun gear, the second grade sun gear meshes with the second grade ring gear mutually through a plurality of second grade planet wheels, a plurality of second grade planet wheels are all established on the second grade planet carrier, output assembly includes rocking arm axle and. The utility model discloses a steering mechanism for vehicle is through making one-level sun gear conduct as the input, and the second grade planet carrier is as the output to make the driving piece can carry out twice speed reduction through the speed reduction subassembly and increase the back drive driving medium rotation of turning round, make the driving medium can drive the rocker shaft rotation more better in order to reach the effect that turns to.
Description
Technical Field
The utility model belongs to the technical field of the vehicle and specifically relates to a steering mechanism for vehicle is related to.
Background
In the related art, the output shaft of the motor is connected with the planet carrier of the planetary reducer, the screw rod is connected with the sun gear of the planetary reducer, the planet carrier of the planetary reducer is used as the input end, and the sun gear of the planetary reducer is used as the output end, so that the functions of reducing the speed and increasing the torque cannot be realized through the transmission mode, and the motor needs larger power in the process of assisting the steering of the vehicle.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least.
Therefore, the utility model provides a steering mechanism for vehicle, the driving piece slows down through the speed reduction subassembly and increases the back of turning round, drives the driving medium rotation again.
According to the utility model discloses a steering mechanism for vehicle, include: the speed reduction assembly is arranged in the first shell and comprises a primary sun gear, a primary planet carrier, a primary inner gear ring, a secondary sun gear, a secondary planet carrier and a secondary inner gear ring, the primary inner gear ring and the secondary inner gear ring are arranged in the first shell, the driving member is connected with the primary sun gear to drive the primary sun gear to rotate, the primary sun gear is meshed with the primary inner gear ring through a plurality of primary planet gears, the primary planet gears are all arranged on the primary planet carrier to drive the primary planet carrier to rotate, the primary planet carrier is connected with the secondary sun gear, the secondary sun gear is meshed with the secondary inner gear ring through a plurality of secondary planet gears, the secondary planet gears are all arranged on the secondary planet carrier to drive the secondary planet carrier to rotate, the output assembly comprises a rocker arm shaft and a transmission piece for driving the rocker arm shaft to rotate, and the transmission piece is connected with the secondary planet carrier so as to be driven by the secondary planet carrier to rotate.
According to the utility model discloses a steering mechanism for vehicle is through making one-level sun gear conduct as the input, and the second grade planet carrier is as the output to make the driving piece can carry out twice speed reduction through the speed reduction subassembly and increase the back drive driving medium rotation of turning round, make the driving medium can more drive the effect that the rocking arm axle rotated in order to reach and turn to.
In some embodiments of the present invention, at least one of the first-stage sun gear and the first-stage planet carrier is provided with a first limiting member, the first-stage sun gear and the first-stage planet carrier are provided with a first rolling bearing therebetween, an inner ring of the first rolling bearing is sleeved on the first-stage sun gear, a first end of the first rolling bearing abuts against the first-stage planet carrier and/or the first-stage sun gear, and a second end of the first rolling bearing abuts against the first limiting member.
In some embodiments of the present invention, the number of the first locating parts is two, two of the first locating parts are provided on the end surfaces of the one-level sun gear and the one-level planet carrier facing each other, and the inner ring and the outer ring of the first rolling bearing respectively abut against two of the first locating parts.
In some embodiments of the present invention, a second rolling bearing is connected between the first-stage planet carrier and the first housing, a first end of the second rolling bearing abuts against the first-stage planet carrier, and a second end of the second rolling bearing is connected to the first housing.
In some embodiments of the present invention, an elastic member is disposed between the second end of the second rolling bearing and the first housing.
In some embodiments of the invention, the transmission member is mounted within the second housing; and a third rolling bearing is connected between the second-stage planet carrier and the second shell, the first end of the third rolling bearing is stopped and supported on the second-stage planet carrier, and the second end of the third rolling bearing is connected with the second shell.
In some embodiments of the present invention, a regulating washer is disposed between the second end of the third rolling bearing and the second housing.
In some embodiments of the present invention, the first-stage planet carrier and the second-stage planet carrier are connected to each other by a thrust bearing.
In some embodiments of the present invention, the transmission member includes a transmission screw and a rack nut externally sleeved on the transmission screw, the transmission screw is connected to the second-stage planet carrier, the transmission screw rotates to drive the rack nut to follow the axial movement of the transmission screw, the rack nut is engaged with the rocker shaft to drive the rocker shaft to rotate.
In some embodiments of the utility model, the driving medium is installed in the second casing, threaded connection has adjusting bolt on the second casing, the epaxial blind hole that is equipped with of rocking arm, adjusting bolt's bolt head rotates to be connected in the blind hole, through rotating adjusting bolt adjusts rack nut with the meshing clearance between the rocking arm axle.
In some embodiments of the present invention, a limiting member is connected in the blind hole, and the bolt head is located between the limiting member and the bottom surface of the blind hole.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a cross-sectional view of a steering mechanism according to an embodiment of the present invention;
figure 2 is a cross-sectional view of a speed reduction assembly according to an embodiment of the present invention;
fig. 3 is a cross-sectional view of an output assembly according to an embodiment of the present invention.
Reference numerals:
100. a steering mechanism;
1. a drive member;
2. a speed reduction assembly; 21. a primary sun gear; 211. a first limit piece; 212. a first rolling bearing; 22. a primary planet carrier; 221. a second rolling bearing; 222. an elastic member; 23. a primary annular gear; 24. a secondary sun gear; 25. a secondary planet carrier; 251. a third rolling bearing; 26. a secondary annular gear; 27. a thrust bearing; 28. a steel wire retainer ring for the first hole; 29. the second hole is provided with a steel wire retainer ring;
3. a first housing;
4. an output component; 41. a transmission member; 411. a drive screw; 412. a rack nut; 42. a rocker shaft; 421. a limiting member;
5. a second housing; 51. adjusting the gasket; 52. adjusting the bolt; 521. positioning a nut; 53. a second bearing; 54. a seal member; 55. a first bearing; 56. an inner end cap;
6. an input shaft; 61. a sensor; 62. a torsion bar.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A steering mechanism 100 for a vehicle having a steering wheel according to an embodiment of the present invention is described below with reference to fig. 1 to 3, the steering mechanism 100 being connected to the steering wheel through a steering column.
According to the utility model discloses a steering mechanism 100 for vehicle, include: the speed reduction assembly 2 is arranged in the first shell 3, the speed reduction assembly 2 comprises a primary sun gear 21, a primary planet carrier 22, a primary inner gear ring 23, a secondary sun gear 24, a secondary planet carrier 25 and a secondary inner gear ring 26, the primary inner gear ring 23 and the secondary inner gear ring 26 are arranged in the first shell 3, the driving member 1 is connected with the primary sun gear 21 to drive the primary sun gear 21 to rotate, the primary sun gear 21 is meshed with the primary inner gear ring 23 through a plurality of primary planet gears, the plurality of primary planet gears are arranged on the primary planet carrier 22 to drive the primary planet carrier 22 to rotate, the primary planet carrier 22 is connected with the secondary sun gear 24, the secondary sun gear 24 is meshed with the secondary inner gear ring 26 through a plurality of secondary planet gears, the plurality of secondary planet gears are arranged on the secondary planet carrier 25 to drive the secondary planet carrier 25 to rotate, the output assembly 4 comprises a rocker arm shaft 42 and a transmission member 41 for driving the rocker arm, the transmission member 41 is connected to the second-stage carrier 25 to be rotated by the second-stage carrier 25.
Particularly, one-level sun gear 21 is as the input, one-level sun gear 21 is connected with driving piece 1, one-level sun gear 21 meshes with one-level ring gear 23 mutually through a plurality of one-level planet wheels, a plurality of one-level planet wheels are all established on one-level planet carrier 22 in order to drive one-level planet carrier 22 and rotate, thereby realize the one-level speed reduction to driving piece 1, one-level planet carrier 22 is connected with second grade sun gear 24, second grade sun gear 24 meshes with second grade ring gear 26 mutually through a plurality of second grade planet wheels, a plurality of second grade planet wheels are all established on second grade planet carrier 25 in order to drive second grade planet carrier 25 and rotate, second grade planet carrier 25 is as the output, second grade planet carrier 25 is connected with driving medium 41, thereby realize the.
It can be understood that driving member 1 drives one-level sun gear 21 to rotate, one-level sun gear 21 meshes with one-level ring gear 23 through a plurality of one-level planet wheels, through the gear ratio between one-level sun gear 21 and the one-level planet wheel, thereby realizing one-level speed reduction, while one-level planet carrier 22 drives second level sun gear 24 to rotate, second level sun gear 24 meshes with second level ring gear 26 through a plurality of second level planet wheels, through the gear ratio between second level sun gear 24 and the second level planet wheel, thereby realizing second level speed reduction, and second level planet carrier 25 drives transmission member 41 to rotate, so as to realize the second level speed reduction effect to driving member 1.
According to the utility model discloses a steering mechanism 100 for vehicle, through making one-level sun gear 21 as the input, second grade planet carrier 25 is as the output to make driving piece 1 can carry out twice speed reduction through speed reduction subassembly 2 and increase to turn round after drive driving medium 41 and rotate, make driving medium 41 can drive rocking arm axle 42 better and rotate in order to reach the effect that turns to.
In some embodiments of the present invention, the rocker shaft 42 is used as the output part of the steering mechanism 100, the rocker shaft 42 is connected to the vertical arm of the vehicle through a spline, and the vertical arm is connected to the drag link, so as to overcome the resistance moment of the tire of the vehicle when steering, and ensure the smooth steering of the vehicle.
The utility model discloses an in some embodiments, be equipped with a plurality of one-level installation axles along the circumference interval on the one-level planet carrier 22, a plurality of one-level planet wheel one-to-one ground cover is established on a plurality of one-level installation axles, all installs a plurality of one-level kingpins between every one-level installation axle and the corresponding one-level installation axle to make a plurality of one-level planet wheels can rotate better between one-level sun gear 21 and one-level ring gear 23.
The utility model discloses an in some embodiments, be equipped with a plurality of second grade installation axles along the circumference interval on the second grade planet carrier 25, a plurality of second grade planet wheel one-to-ones ground cover is established on a plurality of second grade installation axles, all installs a plurality of second grade kingpins between every second grade installation axle and the corresponding second grade installation axle to make a plurality of second grade planet wheels can rotate better between second grade sun gear 24 and second grade ring gear 26.
As shown in fig. 1 and 2, in some embodiments of the present invention, the outer wall surface of the one-level ring gear 23 is provided with a plurality of first cylindrical pins at circumferential intervals, and the inner wall surface of the first housing 3 is provided with a plurality of first mounting grooves at circumferential intervals. The plurality of first cylindrical pins are connected in the plurality of first mounting grooves in a one-to-one correspondence manner, so that the one-level ring gear 23 is limited to rotate in the first shell 3 along the circumferential direction, a first groove is formed in the inner wall surface of the first shell 3, a first hole steel wire retaining ring 28 is arranged in the first groove, one end of each first cylindrical pin abuts against the bottom surface of the first groove, the other end of each first cylindrical pin abuts against the first hole steel wire retaining ring 28, so that the one-level ring gear 23 is limited to move in the axial direction through the plurality of first cylindrical pins, the one-level ring gear 23 is prevented from moving in the first shell 3, and the noise of the steering mechanism 100 during operation is reduced.
As shown in fig. 1 and 2, in some embodiments of the present invention, the outer wall surface of the second-stage ring gear 26 is provided with a plurality of second cylindrical pins at circumferential intervals, and the inner wall surface of the first housing 3 is provided with a plurality of second mounting grooves at circumferential intervals. The plurality of second cylindrical pins are connected in the plurality of second mounting grooves in a one-to-one correspondence manner, so that the secondary annular gear 26 is limited to rotate in the circumferential direction in the first housing 3, a second groove is formed in the inner wall surface of the first housing 3, a second hole steel wire retainer ring 29 is arranged in the second groove, one end of each second cylindrical pin abuts against the bottom surface of the second groove, the other end of each second cylindrical pin abuts against the second hole steel wire retainer ring 29, so that the secondary annular gear 26 is limited to move in the axial direction through the plurality of second cylindrical pins, the secondary annular gear 26 is prevented from moving in the second housing 5, and noise of the steering mechanism 100 during operation is reduced.
It should be noted that the secondary inner gear ring 26 and the primary inner gear ring 23 are arranged to form a split structure, so that the secondary inner gear ring 26 and the primary inner gear ring 23 can be respectively fixed in the first housing 3, the primary sun gear 21 can be better engaged with the primary inner gear ring 23 through a plurality of primary planet gears, and the secondary sun gear 24 can be better engaged with the secondary inner gear ring 26 through a plurality of secondary planet gears.
As shown in fig. 1 and fig. 2, in some embodiments of the present invention, at least one of the first-stage sun gear 21 and the first-stage planet carrier 22 is provided with a first limiting member 211, a first rolling bearing 212 is provided between the first-stage sun gear 21 and the first-stage planet carrier 22, an inner ring of the first rolling bearing 212 is sleeved on the first-stage sun gear 21, a first end of the first rolling bearing 212 is abutted against the first-stage planet carrier 22 and/or the first-stage sun gear 21, and a second end of the first rolling bearing 212 is abutted against the first limiting member 211.
That is to say, the first rolling bearing 212 is connected between the primary sun gear 21 and the primary planet carrier 22, the first end of the first rolling bearing 212 abuts against the primary planet carrier 22 and/or the primary sun gear 21, the second end of the first rolling bearing 212 abuts against the first limiting member 211, and the first rolling bearing 212 is limited to move between the primary sun gear 21 and the primary planet carrier 22, so that the relative movement between the primary sun gear 21 and the primary planet carrier 22 is limited, and the noise generated when the primary sun gear 21 and the primary planet carrier 22 rotate relatively is reduced.
In some embodiments of the present invention, a boss is disposed on the rotating shaft of the first-stage sun gear 21, the first position-limiting member 211 may be a first shaft steel wire retaining ring connected to the rotating shaft, the first rolling bearing 212 is sleeved on the rotating shaft, the first end of the inner ring of the first rolling bearing 212 abuts against the boss, and the second end of the inner ring of the first rolling bearing 212 abuts against the first shaft steel wire retaining ring, so as to play a role of limiting the first rolling bearing 212 to move between the first-stage sun gear 21 and the first-stage planet carrier 22.
In some embodiments of the present invention, a mounting groove has been opened on the one-level planet carrier 22, the first locating part 211 can be a third hole steel wire retainer ring connected in the mounting groove, the first rolling bearing 212 is installed in the mounting groove, the first end of the outer ring of the first rolling bearing 212 abuts on the bottom surface of the mounting groove, and the second end of the outer ring of the first rolling bearing 212 abuts on the third hole steel wire retainer ring, so as to play the effect of limiting the first rolling bearing 212 to move between the one-level sun gear 21 and the one-level planet carrier 22.
As shown in fig. 1 and fig. 2, in some embodiments of the present invention, there are two first limiting members 211, two first limiting members 211 are disposed on end surfaces of the first-stage sun gear 21 and the first-stage planet carrier 22 facing each other, and an inner ring and an outer ring of the first rolling bearing 212 respectively abut against the two first limiting members 211. That is, the first limiting members 211 are disposed on the end surfaces of the first-stage sun gear 21 and the first-stage carrier 22 facing each other, so that the inner ring and the outer ring of the first rolling bearing 212 can be respectively abutted against the two first limiting members 211, thereby further limiting the movement of the first rolling bearing 212 between the first-stage sun gear 21 and the first-stage carrier 22, and reducing the noise generated when the first-stage sun gear 21 and the first-stage carrier 22 rotate relatively.
As shown in fig. 1 and 2, in some embodiments of the present invention, a second rolling bearing 221 is connected between the first-stage planet carrier 22 and the first casing 3, a first end of the second rolling bearing 221 abuts against the first-stage planet carrier 22, and a second end of the second rolling bearing 221 is connected to the first casing 3. That is, the second rolling bearing 221 is provided between the first-stage carrier 22 and the first casing 3, and both ends of the second rolling bearing 221 are respectively abutted to the first-stage carrier 22 and the first casing 3, so that the first-stage carrier 22 can rotate more smoothly in the first casing 3, and the position of the first-stage carrier 22 in the first casing 3 can be restricted by the second rolling bearing 221, so that the reduction gear unit 2 can be mounted in the casing.
As shown in fig. 1 and 2, in some embodiments of the present invention, an elastic member 222 is disposed between the second end of the second rolling bearing 221 and the first housing 3. Specifically, the elastic member 222 may be a wave spring, and by connecting the elastic member 222 between the second end of the second rolling bearing 221 and the first housing 3, the gap between the primary planet carrier 22 and the first housing 3 is adjusted by the elastic deformation of the elastic member 222, so that the installation of the speed reduction assembly 2 is more accurate.
As shown in fig. 1 to 3, in some embodiments of the present invention, the transmission member 41 is installed in the second casing 5, the third rolling bearing 251 is connected between the second-stage planetary carrier 25 and the second casing 5, a first end of the third rolling bearing 251 is stopped on the second-stage planetary carrier 25, and a second end of the third rolling bearing 251 is connected to the second casing 5. That is, the third rolling bearing 251 is connected to the second-stage carrier 25, so that the second-stage carrier 25 can better rotate in the first casing 3, and meanwhile, the two ends of the third rolling bearing 251 abut against the second-stage carrier 25 and the second casing 5 respectively, so as to limit the installation position of the second-stage carrier 25 in the second casing 5, thereby ensuring the installation accuracy of the speed reduction assembly 2 in the first casing 3.
As shown in fig. 1 and 2, in some embodiments of the present invention, an adjusting washer 51 is disposed between the second end of the third rolling bearing 251 and the second housing 5. That is, by adjusting the thickness of the adjusting shim 51, the gap between the third rolling bearing 251 and the second housing 5 is adjusted, so that the reduction assembly 2 can be better installed in the first housing 3.
The utility model discloses an in some embodiments, through the one end with adjusting shim 51 setting at speed reduction subassembly 2, set up elastic component 222 at the speed reduction subassembly 2 other end, because the gear thickness in the speed reduction subassembly 2, wire retainer ring groove width for the hole, the planet carrier all has machining error, consequently, can lead to speed reduction subassembly 2 to produce the axial clearance in the axial, thereby through the thickness of adjustment adjusting shim 51, with the axial clearance of adjustment speed reduction subassembly 2, play and reduce gear axial float, reinforcing gear operation stationarity, reduce the noise that steering mechanism 100 produced when the operation.
As shown in fig. 3, in some embodiments of the present invention, a thrust bearing 27 is connected between the first-stage planet carrier 22 and the second-stage planet carrier 25. Specifically, the outer ring of the thrust bearing 27 is connected to the primary planet carrier 22, and the inner ring of the thrust bearing 27 is connected to the secondary planet carrier 25, so that the primary planet carrier 22 and the secondary planet carrier 25 rotate relatively smoothly.
As shown in fig. 1 to 3, in some embodiments of the present invention, the transmission member 41 includes a transmission screw 411 and a rack nut 412 sleeved on the transmission screw 411, the transmission screw 411 is connected to the secondary planet carrier 25, the transmission screw 411 rotates to drive the rack nut 412 to move along the axial direction of the transmission screw 411, and the rack nut 412 is engaged with the rocker shaft 42 to drive the rocker shaft 42 to rotate. The secondary planet carrier 25 of the speed reduction assembly 2 is connected with the transmission screw 411 to drive the transmission screw 411 to rotate, the transmission screw 411 is connected with the rack nut 412, when the transmission screw 411 rotates, the rack nut 412 axially moves on the transmission screw 411, so that the rocker arm shaft 42 can be driven to rotate by meshing the rack nut 412 with the rocker arm shaft 42, and the vehicle steering effect is realized.
In some embodiments of the utility model, rack nut 412 threaded connection is on drive screw 411, rack nut 412 passes through the stand pipe and connects on the casing to avoid rack nut 412 to rotate on drive screw 411, be equipped with the rack on rack nut 412 simultaneously, be equipped with the sector on rocker shaft 42, through making rack and sector mesh mutually, when drive screw 411 rotates, rack nut 412 axial displacement on drive screw 411, thereby through making rack and sector mesh mutually in order to drive rocker shaft 42 and rotate, in order to realize the effect that the vehicle turned to.
In some embodiments of the present invention, the two ends of the drive screw 411 are rotatably connected in the second housing 5 through the first bearing 55, so that the reduction assembly 2 can better drive the drive screw 411 to rotate. In some embodiments of the present invention, an inner end cap 56 is connected between the driving screw 411 and the speed reduction assembly 2, the driving screw 411 passes through the inner end cap 56 to be connected with the speed reduction assembly 2, and one of the first bearings 55 is rotatably connected between the driving screw 411 and the inner end cap 56, so as to facilitate the installation of the driving screw 411.
As shown in fig. 1 to 3, in some embodiments of the present invention, the transmission member 41 is installed in the second housing 5, the adjusting bolt 52 is screwed on the second housing 5, the rocker shaft 42 is provided with a blind hole, the bolt head of the adjusting bolt 52 is rotatably connected in the blind hole, and the adjusting bolt 52 is rotated to adjust the meshing gap between the rack nut 412 and the rocker shaft 42. That is, one end of the rocker shaft 42 may extend into the second housing 5, the bolt head of the adjusting bolt 52 screwed to the second housing 5 may extend into the blind hole, and the bolt head may freely rotate in the blind hole, so as to prevent the bolt head from interfering with the rotation of the rocker shaft 42, when the meshing gap between the rack nut 412 and the rocker shaft 42 needs to be adjusted, the adjusting bolt 52 may be moved in the axial direction by rotating the adjusting bolt 52 on the second housing 5, and in a state where the bolt head of the adjusting bolt 52 abuts against the bottom surface of the blind hole, the adjusting bolt 52 may be continuously rotated so that the adjusting bolt 52 may push the rocker shaft 42 to move in the axial direction, so as to achieve an effect of adjusting the meshing gap between the rack nut 412 and the rocker shaft 42.
In some embodiments of the present invention, one end of the rocker shaft 42 may extend into the second housing 5, and the rocker shaft 42 is rotatably connected in the second housing 5 through the second bearing 53, so that the rocker shaft 42 can rotate better. In some embodiments of the present invention, a sealing member 54 is connected between the second housing 5 and the rocker shaft 42, and the sealing member 54 is located outside the second bearing 53, so as to avoid oil leakage in the second housing 5 and dry friction between the rack nut 412 and the rocker shaft 42.
In some embodiments of the present invention, the limiting member 421 is connected in the blind hole, and the bolt head is located between the limiting member 421 and the bottom surface of the blind hole. That is, the bolt head is limited between the limiting member 421 and the bottom surface of the blind hole by the limiting member 421, so as to avoid the bolt head from being separated from the blind hole, and when the adjusting bolt 52 moves axially, the bolt head can abut against the limiting member 421 or the blind hole, so as to drive the rocker arm shaft 42 to move axially, and thus, the meshing gap between the rack nut 412 and the rocker arm shaft 42 can be better adjusted.
The utility model discloses an in some embodiments, blind hole female connection has slotted nut, and the bolt head is located between the bottom surface of slotted nut and blind hole to be convenient for through rotating the distance between the bottom surface of slotted nut in order to adjust slotted nut and blind hole, so that the bolt head can install better in the blind hole. In some embodiments of the present invention, the bottom surface of the blind hole is connected with a friction pad, and the friction pad is provided with a coating with a low friction coefficient on the surface, so that the bolt head can rotate better when the bolt head abuts against the friction pad.
In some embodiments of the present invention, the adjusting bolt 52 is threadedly connected with a positioning nut 521, and the adjusting bolt 52 is fixed on the second housing 5 through the positioning nut 521, so as to ensure that the adjusting bolt 52 can be stably connected on the second housing 5 when the meshing gap between the rack nut 412 and the rocker shaft 42 does not need to be adjusted.
As shown in fig. 1 to 3, in some embodiments of the present invention, the steering mechanism 100 further includes an input shaft 6, one end of the input shaft 6 is connected to the steering wheel through a steering column, the other end of the input shaft 6 is connected to the transmission member 41, the input shaft 6 is connected to a sensor 61, the sensor 61 is used for detecting a relative rotation angle between the input shaft 6 and the transmission member 41, the driving member 1 is electrically connected to the sensor 61, and the driving member 1 controls a rotation angle of the transmission member 41 according to a detection result of the sensor 61. That is, when the input shaft 6 rotates relative to the transmission member 41, the sensor 61 detects the relative rotation angle, so that the driving member 1 can rotate the transmission member 41 after being decelerated by the deceleration assembly 2 according to the detection result of the sensor 61, thereby achieving the effect of assisting the steering of the vehicle.
The utility model discloses a in some embodiments, when detecting input shaft 6 and driving medium 41 relative rotation at first through sensor 61, sensor 61 transmits the transmission of testing result to the controller, and the controller calculates according to received testing result again to the electric current and the moment of torsion size of control driving piece 1 realize not equidimension and not equidirectional helping hand.
After the input shaft 6 and the transmission member 41 relatively rotate to a preset angle, the rotation angle of the input shaft 6 is detected through the sensor 61, the sensor 61 transmits the detection result to the controller, and the controller calculates according to the received detection result so as to control the current and the torque of the driving member 1 to realize the power assistance in different sizes and different directions.
As shown in fig. 1, in some embodiments of the present invention, a torsion bar 62 is disposed in the input shaft 6 or the transmission member 41, one end of the torsion bar 62 is connected to the input shaft 6, and the other end of the torsion bar 62 is connected to the transmission member 41. That is, by providing the torsion bar 62 in the input shaft 6 or the transmission member 41 such that both ends of the torsion bar 62 are connected to the input shaft 6 and the transmission member 41, respectively, the torsion bar 62 can be twisted when the input shaft 6 and the transmission member 41 rotate relatively, thereby enhancing the connection strength between the input shaft 6 and the transmission member 41 to stabilize the rotation between the input shaft 6 and the transmission member 41.
In some embodiments of the present invention, a through hole is formed in the input shaft 6, the torsion bar 62 is disposed in the through hole, the torsion bar 62 can be made of spring steel, one end of the torsion bar 62 is connected to the input shaft 6 through a pin, and the other end of the torsion bar 62 is connected to the transmission member 41 through a spline, so that when the input shaft 6 and the transmission member 41 rotate relatively, the rotation between the input shaft 6 and the transmission member 41 is more stable through the connection of the torsion bar 62.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A steering mechanism for a vehicle, comprising:
a drive member;
the speed reduction assembly is installed in the first shell and comprises a primary sun gear, a primary planet carrier, a primary inner gear ring, a secondary sun gear, a secondary planet carrier and a secondary inner gear ring, the primary inner gear ring and the secondary inner gear ring are arranged in the first shell, the driving piece is connected with the primary sun gear to drive the primary sun gear to rotate, the primary sun gear is meshed with the primary inner gear ring through a plurality of primary planet gears, and the plurality of primary planet gears are all arranged on the primary planet carrier to drive the primary planet carrier to rotate;
the primary planet carrier is connected with a secondary sun gear, the secondary sun gear is meshed with a secondary inner gear ring through a plurality of secondary planet gears, and the plurality of secondary planet gears are all arranged on the secondary planet carrier to drive the secondary planet carrier to rotate;
and the output component comprises a rocker arm shaft and a transmission piece for driving the rocker arm shaft to rotate, and the transmission piece is connected with the secondary planet carrier so as to be driven by the secondary planet carrier to rotate.
2. The steering mechanism for the vehicle according to claim 1, wherein at least one of the primary sun gear and the primary planet carrier is provided with a first limiting member, a first rolling bearing is arranged between the primary sun gear and the primary planet carrier, an inner ring of the first rolling bearing is sleeved on the primary sun gear, a first end of the first rolling bearing abuts against the primary planet carrier and/or the primary sun gear, and a second end of the first rolling bearing abuts against the first limiting member.
3. The steering mechanism for a vehicle according to claim 2, wherein there are two first limiting members, two first limiting members are provided on end faces of the primary sun gear and the primary carrier that face each other, and an inner ring and an outer ring of the first rolling bearing are respectively stopped against the two first limiting members.
4. The steering mechanism for the vehicle according to claim 1, wherein a second rolling bearing is connected between the primary planet carrier and the first housing, a first end of the second rolling bearing abuts against the primary planet carrier, and a second end of the second rolling bearing is connected with the first housing.
5. The steering mechanism for a vehicle according to claim 1, wherein the transmission is mounted in a second housing;
and a third rolling bearing is connected between the second-stage planet carrier and the second shell, the first end of the third rolling bearing is stopped and supported on the second-stage planet carrier, and the second end of the third rolling bearing is connected with the second shell.
6. The steering mechanism for a vehicle according to claim 5, wherein an adjustment washer is provided between the second end of the third rolling bearing and the second housing.
7. The steering mechanism for a vehicle according to claim 1, wherein a thrust bearing is connected between the primary planet carrier and the secondary planet carrier.
8. The steering mechanism for the vehicle according to any one of claims 1 to 7, wherein the transmission member includes a drive screw and a rack nut that is externally fitted to the drive screw, the drive screw being connected to the secondary planet carrier, the drive screw being rotated to move the rack nut in an axial direction of the drive screw;
the rack nut is meshed with the rocker shaft to drive the rocker shaft to rotate.
9. The steering mechanism for the vehicle according to claim 8, wherein the transmission member is installed in a second housing, an adjusting bolt is threadedly connected to the second housing, a blind hole is formed in the rocker shaft, a bolt head of the adjusting bolt is rotatably connected to the blind hole, and a meshing gap between the rack nut and the rocker shaft is adjusted by rotating the adjusting bolt.
10. The steering mechanism for a vehicle according to claim 9, wherein a stopper is connected within the blind hole, and the bolt head is located between the stopper and a bottom surface of the blind hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921428232.1U CN210592114U (en) | 2019-08-29 | 2019-08-29 | Steering mechanism for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921428232.1U CN210592114U (en) | 2019-08-29 | 2019-08-29 | Steering mechanism for vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN210592114U true CN210592114U (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921428232.1U Active CN210592114U (en) | 2019-08-29 | 2019-08-29 | Steering mechanism for vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114954639A (en) * | 2022-06-28 | 2022-08-30 | 湖北恒隆汽车系统集团有限公司 | Mounting structure of electric power-assisted mechanism of electric hydraulic circulating ball steering gear and power assisting method of electric power-assisted mechanism |
-
2019
- 2019-08-29 CN CN201921428232.1U patent/CN210592114U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114954639A (en) * | 2022-06-28 | 2022-08-30 | 湖北恒隆汽车系统集团有限公司 | Mounting structure of electric power-assisted mechanism of electric hydraulic circulating ball steering gear and power assisting method of electric power-assisted mechanism |
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