CN113895509A - Steering gear assembly capable of switching steering modes and steering system - Google Patents
Steering gear assembly capable of switching steering modes and steering system Download PDFInfo
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- CN113895509A CN113895509A CN202111502143.9A CN202111502143A CN113895509A CN 113895509 A CN113895509 A CN 113895509A CN 202111502143 A CN202111502143 A CN 202111502143A CN 113895509 A CN113895509 A CN 113895509A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D3/00—Steering gears
- B62D3/02—Steering gears mechanical
- B62D3/12—Steering gears mechanical of rack-and-pinion type
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Abstract
A diverter assembly and a steering system that are switchable between steering modes, the diverter assembly comprising: a first independent diverter comprising: a first rotary drive assembly, a first shaft, a gear, and a first rack; a second independent diverter comprising: the second rotary driving component, the second rotating shaft, the gear set and the second rack; and the connecting mechanism is arranged between the first rotating shaft and the second rotating shaft and can enable the first rotating shaft and the second rotating shaft to be in a connected state or a disconnected state. The connection state or disconnection state of the first rotating shaft and the second rotating shaft is realized through the mutual connection or disconnection state of the first connecting piece and the second connecting piece in the connecting mechanism, so that the first independent steering gear and the second independent steering gear can switch an integral steering mode or an independent steering mode, the running stability of the vehicle is ensured in the integral steering mode, the special requirements of in-situ steering or transverse form of the vehicle can be met in the independent steering mode, and the running maneuverability of the vehicle is improved.
Description
Technical Field
The invention relates to the technical field of steering gears, in particular to a steering gear assembly and a steering system capable of switching steering modes.
Background
The automobile steering system can be used for changing or maintaining the driving direction of an automobile and is important for the driving safety of the automobile. At present, the traditional steering system of the automobile is developed very mature and is applied to various modern vehicles, but along with the development of the automobile industry and the improvement of the living standard of people, the traditional steering system can not meet the requirement of people on the steering performance of the automobile. The appearance of the independent steering system meets different illusions of people on automobile steering, the problem of large turning radius in the traditional steering system is solved, the operation stability and maneuverability of the automobile are improved, and the independent steering system has great development prospect and market potential.
In the existing four-wheel independent steering system technology, each wheel corresponds to a set of steering system, so that an independent steering function is realized, but the original mechanical connection is cancelled, and only four independent motors are used for controlling the steering of the wheels, so that once a steering system of one wheel fails, the serious consequence that the whole steering system of an automobile fails is caused; and because the left and right wheels lack mechanical connection, the phenomenon that the left and right wheels rotate can occur when the vehicle runs on a bumpy road or is subjected to lateral force, so that the anti-jamming capability and the running stability of the vehicle are poor.
Disclosure of Invention
The invention mainly solves the technical problem of providing a steering gear assembly which can connect two independent steering systems into an integral steering state, ensures the running stability of a vehicle and improves the running maneuverability of the vehicle.
According to a first aspect of the present application, there is provided a diverter assembly switchable between diverting modes, comprising:
a first independent diverter comprising: a first rotary drive assembly, a first shaft, a gear, and a first rack; the gear is arranged on the first rotating shaft and meshed with the first rack; the first rotary driving component is used for driving the first rotating shaft to rotate;
a second independent diverter comprising: the second rotary driving component, the second rotating shaft, the gear set and the second rack; the gear set is arranged on the second rotating shaft and is meshed with the second rack; the second rotary driving assembly is used for driving the second rotating shaft to rotate, and the gear set can output torque in the direction opposite to that of the second rotating shaft; the first rotating shaft and the second rotating shaft are parallel to each other;
a coupling mechanism comprising: a first connecting piece and a second connecting piece; the first connecting piece is slidably arranged on the first rotating shaft, the second connecting piece is slidably arranged on the second rotating shaft, and the first connecting piece and the second connecting piece can move relatively to be in a connected state or can move oppositely to be in a disconnected state; in a connection state, one of the first rotary driving component and the second rotary driving component works, and the first rotating shaft and the second rotating shaft keep rotating synchronously; in the off state, the first rotary drive assembly and the second rotary drive assembly operate simultaneously and independently.
In one embodiment, the first rotating shaft and the second rotating shaft may be coaxial or may not be coaxial.
In one embodiment, the connection mechanism further comprises: and the movement driving module is used for driving the first connecting piece to move along the axial line of the first rotating shaft towards the direction of the second connecting piece and driving the second connecting piece to move along the axial line of the second rotating shaft towards the direction of the first connecting piece so as to enable the first connecting piece and the second connecting piece to move relatively, or driving the first connecting piece to move along the axial line of the first rotating shaft away from the direction of the second connecting piece and driving the second connecting piece to move along the axial line of the second rotating shaft away from the direction of the first connecting piece so as to enable the first connecting piece and the second connecting piece to move away from each other.
In one embodiment, the mobile driving module is an electromagnetic control module, the first connecting member is a first electromagnetic connecting member, the second connecting member is a second electromagnetic connecting member, and the electromagnetic control module is configured to control the first electromagnetic connecting member and the second electromagnetic connecting member to generate an anisotropic electromagnetic field, so that the first electromagnetic connecting member moves toward the second electromagnetic connecting member along the axial line of the first rotating shaft, and the second electromagnetic connecting member moves toward the first electromagnetic connecting member along the axial line of the second rotating shaft, so that the first electromagnetic connecting member and the second electromagnetic connecting member move relative to each other to be in a connected state, or, the electromagnetic control module is configured to control the first electromagnetic connecting member and the second electromagnetic connecting member to generate an isotropic electromagnetic field, so that the first electromagnetic connecting member moves away from the second electromagnetic connecting member along the axial line of the first rotating shaft, and the second electromagnetic connecting piece moves along the axial line of the second rotating shaft in the direction deviating from the first electromagnetic connecting piece, so that the first electromagnetic connecting piece and the second electromagnetic connecting piece deviate from each other to be in a disconnected state.
In one embodiment, the first connecting piece is a first transmission gear, the second connecting piece is a second transmission gear, and the mobile driving module comprises a first driving unit and a second driving unit; the first driving unit is used for driving the first transmission gear to move towards the end of the first rotating shaft along the axial line of the first rotating shaft, the second driving unit is used for driving the second transmission gear to move towards the end of the second rotating shaft along the axial line of the second rotating shaft so as to enable the first transmission gear and the second transmission gear to move relatively, therefore, the first transmission gear and the second transmission gear are meshed with each other to be in a connection state, or the first driving unit is used for driving the first transmission gear to move away from the end of the first rotating shaft along the axial line of the first rotating shaft, the second driving unit is used for driving the second transmission gear to move away from the end of the second rotating shaft along the axial line of the second rotating shaft so as to enable the first transmission gear and the second transmission gear to move away from each other, so that the first transmission gear and the second transmission gear are disengaged from each other to be in a disconnected state.
In one embodiment, the first drive unit and the second drive unit each comprise: the linear driving module and the shifting fork are connected with the first transmission gear or the second transmission gear, and the first transmission gear or the second transmission gear can rotate relative to the shifting fork; the linear driving module is used for driving the shifting fork to reciprocate along an axis parallel to the first rotating shaft or an axis parallel to the second rotating shaft.
In one embodiment, the linear drive module includes: a linear drive motor, a lead screw, and a lead screw nut; the lead screw is parallel to the first rotating shaft or the second rotating shaft, the linear driving motor is in transmission connection with the lead screw, the lead screw nut is in threaded connection with the lead screw, and the shifting fork is fixed on the lead screw nut.
In one embodiment, the gear set is a planetary gear mechanism comprising: the locking mechanism comprises a sun gear, a plurality of planet gears, a gear ring, a planet carrier and a locking mechanism; the sun gear is mounted on the second rotating shaft, the plurality of planet gears are rotatably mounted on the planet carrier, the planet carrier is mounted on the locking mechanism, and the locking mechanism is used for locking the planet carrier so as to keep the planet carrier fixed; the plurality of planet wheels are distributed along the periphery of the sun wheel, the sun wheel is meshed with the planet wheels, and the planet wheels are meshed with the gear ring; the gear ring is provided with an outer gear ring and an inner gear ring, the planet gear is meshed with the inner gear ring, and the outer gear ring is meshed with the second rack.
In one embodiment, the linear speed of the gear is the same as the linear speed of the outer ring gear.
According to a second aspect of the present application, there is provided a steering system comprising: the steering gear assembly capable of switching the steering mode.
According to the steering gear assembly and the steering system with switchable steering modes, the connection state or the disconnection state of the first rotating shaft and the second rotating shaft is realized through the mutual connection or disconnection state of the first connecting piece and the second connecting piece in the connecting mechanism, so that the first independent steering gear and the second independent steering gear can switch the integral steering mode or the independent steering mode, the driving stability of a vehicle is ensured in the integral steering mode, the special requirements of in-situ steering or transverse mode of the vehicle can be met in the independent steering mode, and the driving maneuverability of the vehicle is improved.
Drawings
FIG. 1 is a perspective view of a switchable steering mode diverter assembly provided herein;
FIG. 2 is an exploded view of a diverter assembly of the switchable diversion mode provided herein;
FIG. 3 is a schematic view of an embodiment of a switchable steering mode diverter assembly provided herein with a coupling mechanism to disconnect the first and second shafts;
FIG. 4 is a schematic view of an embodiment of a switchable steering mode diverter assembly provided herein with a coupling mechanism to couple a first shaft to a second shaft;
FIG. 5 is a schematic structural view of a coupling mechanism in another embodiment of a switchable steering mode diverter assembly provided herein;
FIG. 6 is a schematic structural view of a gear set in a switchable steering mode diverter assembly provided herein;
FIG. 7 is a perspective view of a steering system provided herein;
fig. 8 is an exploded view of a steering system provided by the present application.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.
Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).
The application provides a steering gear assembly and a steering system of changeable mode of turning to, the steering gear of changeable mode of turning to can make two steering wheel that have the independent function of turning to connect through mechanical means between, can make two steering wheel that have the independent function of turning to again, go or wherein appear the phenomenon of steering wheel rotation when receiving the yawing force for a steering wheel in order to avoid going on the road surface of jolting, improve independent steering system's interference killing feature and driving stability.
The first embodiment,
The present embodiment provides a steering gear assembly capable of switching a steering mode, and referring to fig. 1 and 2, the steering gear assembly capable of switching the steering mode includes: a first independent diverter 10, a second independent diverter 20, and a linkage mechanism 30. As shown in fig. 7 and 8, the first independent steering gear 10 can independently control the first steerable wheel 301 to turn left or right, and the second independent steering gear 20 can independently control the second steerable wheel 302 to turn left or right.
The first independent steering gear 10 includes: a first rotary drive assembly 11, a first shaft 12, a gear 13, and a first rack 14. A gear 13 is mounted on the first shaft 12, and the gear 13 is engaged with a first rack 14. The first rotary driving assembly 11 is in transmission connection with the first rotating shaft 12, and the first rotary driving assembly 11 is used for driving the first rotating shaft 12 to rotate. In the present embodiment, the gear 13 can output a torque in the same direction as the first shaft 12.
In this embodiment, the first rotation driving assembly 11 is a driving motor, and a motor shaft of the driving motor is connected to one end of the first rotating shaft 12 through a coupling. The first rotary driving assembly 11 can output a clockwise or counterclockwise rotary motion to drive the gear 13 to rotate clockwise or counterclockwise, and the first rack 14 is disposed along the transverse direction in the view shown in fig. 1 and 2, so that the gear 13 drives the first rack 14 to move left or right. Referring to fig. 7 and 8, one end of the first rack 14 is connected to the first track rod 101 through a ball joint pair, the other end of the first track rod 101 is connected to the first steering knuckle 201 through a ball joint pair, and the first steering wheel 301 is mounted on the first steering knuckle 201. When the first rack 14 moves to the left, the first track rod 101 and the first steering knuckle 201 push the first steering wheel 301 to rotate to the right, and when the first rack 14 moves to the right, the first track rod 101 and the first steering knuckle 201 pull the first steering wheel 301 to rotate to the left, so that the first independent steering gear 10 can drive the first steering wheel 301 to rotate to the left or to the right.
The second independent steering gear 20 includes: a second rotary drive assembly 21, a second shaft 22, a gear set 23, and a second rack 24. The gear set 23 is mounted on the second rotating shaft 24, and the gear set 23 is engaged with the second rack 24. The second rotary driving assembly 21 is used for driving the second rotating shaft 22 to rotate. In the present embodiment, the gear set 24 can output a torque in the opposite direction to the second rotating shaft 24.
In this embodiment, the second rotation driving assembly 21 is a driving motor, and a motor shaft of the driving motor is connected to one end of the second rotating shaft 22 through a coupling. The second rotary driving assembly 21 can output clockwise or counterclockwise rotary motion to drive the gear set 24 to output counterclockwise or clockwise rotary motion. In the view shown in fig. 1 and 2, the second rack 24 is also arranged in the transverse direction, so that the second eating peach 24 is moved to the right or left by the gear train 24. As shown in fig. 7 and 8, one end of the second rack 24 is connected to the second tie rod 102 through a ball joint pair, the other end of the second tie rod 102 is connected to the second knuckle 202 through a ball joint pair, and the second steering wheel 302 is mounted on the second knuckle 202. When the second rack 24 moves to the left, the second tie rod 102 and the second knuckle 202 pull the second steering wheel 302 to rotate to the left, and when the second rack 24 moves to the right, the second tie rod 102 and the second knuckle 202 pull the second steering wheel 302 to rotate to the right, so that the second independent steering gear 20 can drive the second steering wheel 302 to rotate to the left or to the right.
In this embodiment, the first steering wheel 301 and the second steering wheel 302 shown in fig. 7 and 8 are both front wheels or rear wheels of the vehicle. When the first steering wheel 301 and the second steering wheel 302 need to be turned to the left at the same time, the first rack 14 moves to the right, and the second rack 24 moves to the left, so that the vehicle is steered to the left; when the first steering wheel 301 and the second steering wheel 302 are required to be turned to the right simultaneously, the first rack 14 moves to the left, and the second rack 24 moves to the right, so that the vehicle is steered to the right; when it is required that the first steering wheel 301 is turned to the left and the second steering wheel 302 is turned to the right, the first rack 14 is moved to the right and the second rack 24 is moved to the right to traverse or steer the vehicle in situ. Similarly, when the first steering wheel 301 rotates to the right and the second steering wheel 302 rotates to the left, the vehicle can be steered in a lateral or pivot manner, so as to meet the special requirement of vehicle driving and improve the maneuverability of the vehicle.
The connection mechanism 30 is disposed between the first rotating shaft 12 and the second rotating shaft 13, and the connection mechanism 30 can connect or disconnect the first rotating shaft 12 and the second rotating shaft 13.
In the connection state, the first rotation driving component 11 and one of the second rotation driving components 21 operate, and in the connection state, under the action of the connection mechanism 30, the first rotation driving component 11 can drive the first rotation shaft 12 to rotate and drive the second rotation shaft 22 to rotate synchronously through the connection mechanism 30, or the second rotation driving component 12 can drive the second rotation shaft 22 to rotate and drive the first rotation shaft 12 to rotate through the connection mechanism 30. Taking the first rotation driving assembly 11 as an example, when the first rotation driving assembly 11 drives the first rotation shaft 12 to rotate and drives the first rack 14 to move leftward through the gear 13, the second rotation shaft 22, which rotates synchronously, drives the second rack 24 to move rightward through the gear set 23. When the first rotary driving assembly 11 drives the first rotary shaft 12 to rotate and drives the first rack 14 to move rightwards through the gear 13, the synchronously rotating second rotary shaft 22 drives the second rack 24 to move leftwards through the gear set 23.
In the disconnected state, the first rotary drive assembly 11 and the second rotary drive assembly 21 operate simultaneously and independently. For example, the first and second rotary driving assemblies 11 and 21, which are independently operated at the same time, may simultaneously turn the first steering wheel 301 and the second steering wheel 302 to the left or to the right, respectively, or turn the first steering wheel 301 to the left and the second steering wheel 302 to the right, or turn the first steering wheel 301 to the right and the second steering wheel 302 to the left, respectively.
In this embodiment, the connection state or the disconnection state of the first rotating shaft 14 and the second rotating shaft 24 is realized through the connection mechanism 30, so that the first independent steering gear 10 and the second independent steering gear 20 can switch between the integral steering mode or the independent steering mode, the running stability of the vehicle is ensured in the integral steering mode, and the special requirements of the in-situ steering or the transverse mode of the vehicle can be met in the independent steering mode, so that the running maneuverability of the vehicle is improved.
In this embodiment, the first rotating shaft 12 and the second rotating shaft 22 are at least parallel to each other, and in a more preferred embodiment, the first rotating shaft 12 and the second rotating shaft 22 may be coaxial or may not be coaxial.
Referring to fig. 3, in the steering assembly capable of switching the steering mode provided in the present embodiment, the connection mechanism 30 includes: the first connecting member 31 is slidably mounted on the first rotating shaft 12, the second connecting member 32 is slidably mounted on the second rotating shaft 22, and the first connecting member 31 and the second connecting member 32 can move relatively to each other to connect the first rotating shaft 12 and the second rotating shaft 22, or the first connecting member 31 and the second connecting member 32 can move away from each other to disconnect the first rotating shaft 12 and the second rotating shaft 22.
In this embodiment, the other end of the first rotating shaft 12 is exposed to the gear 13 for a certain length to form a first rotating shaft exposed section, the other end of the second rotating shaft 22 is also exposed to the gear set 23 to form a second rotating shaft exposed section, the first connecting member 31 is slidably mounted on the first rotating shaft exposed section, and the second connecting member 32 is slidably mounted on the second rotating shaft exposed section. The first connecting member 31 is movable along the exposed section of the first rotating shaft, and the second connecting member 32 is movable along the exposed section of the second rotating shaft, so that the first connecting member 31 and the second connecting member 32 can be connected or disconnected, and the first rotating shaft 12 and the second rotating shaft 22 are in a connected state or a disconnected state.
In this embodiment, the extension line of the axial line of the first rotating shaft 12 coincides with the extension line of the axial line of the second rotating shaft 22, that is, the first rotating shaft 12 and the second rotating shaft 22 are coaxial, so that the connection mechanism 30 can connect or disconnect the first connecting piece 31 and the second connecting piece 32 by adopting an electromagnetic connection mode.
In the above embodiment, the present adapter mechanism 30 further includes: and a moving driving module, configured to drive the first connecting element 31 to move toward the second connecting element 32 along the axial line of the first rotating shaft 12, and drive the second connecting element 32 to move toward the first connecting element 31 along the axial line of the second rotating shaft 22, so that the first connecting element 31 and the second connecting element 32 move relatively, and thus the first connecting element 31 is connected to the second connecting element 32, and further the first rotating shaft 12 is connected to the second rotating shaft 22. Or, the moving driving module is configured to drive the first connecting element 31 to move along the axial line of the first rotating shaft 12 in a direction away from the second connecting element 32, and drive the second connecting element 32 to move along the axial line of the second rotating shaft 12 in a direction away from the first connecting element 31, so that the first connecting element 31 and the second connecting element 32 move away from each other, and thus the first connecting element 31 and the second connecting element 32 are disconnected, and further the first rotating shaft 12 and the second rotating shaft 2 are in a disconnected state.
In this embodiment, the first rotating shaft 12 is coaxial with the second rotating shaft 22, the mobile driving module is an electromagnetic control module, the first connecting member 31 is a first electromagnetic connecting member, the second connecting member 32 is a second electromagnetic connecting member, the electromagnetic control module is connected to the first electromagnetic connecting member and the second electromagnetic connecting member, the electromagnetic control module is configured to control the first electromagnetic connecting member and the second electromagnetic connecting member to generate an anisotropic electromagnetic field, so that the first electromagnetic connecting member moves along the axial line of the first rotating shaft 12 toward the second electromagnetic connecting member, and the second electromagnetic connecting member moves along the axial line of the second rotating shaft 22 toward the first electromagnetic connecting member, so that the first electromagnetic connecting member and the second electromagnetic connecting member move relatively, so that the first rotating shaft 12 and the second rotating shaft 22 are in a connected state, or the electromagnetic control module is configured to control the first electromagnetic connecting member and the second electromagnetic connecting member to generate an isotropic electromagnetic field, so that the first electromagnetic connector moves along the axial line of the first rotating shaft 12 in a direction away from the second electromagnetic connector, and the second electromagnetic connector moves along the axial line of the second rotating shaft 22 in a direction away from the first electromagnetic connector, so that the first electromagnetic connector and the second electromagnetic connector move away from each other, and the first rotating shaft 12 and the second rotating shaft 22 are in a disconnected state.
In the above embodiment, when the first electromagnetic connecting element and the second electromagnetic connecting element are in a disconnected state, the electromagnetic control module enables the first electromagnetic connecting element and the second electromagnetic connecting element to generate opposite electromagnetic forces, the first electromagnetic connecting element moves towards the exposed section of the second rotating shaft along the length direction of the exposed section of the first rotating shaft, and the second electromagnetic connecting element moves towards the exposed section of the first rotating shaft along the length direction of the exposed section of the second rotating shaft, so that the first electromagnetic connecting element and the second electromagnetic connecting element attract each other, and the first rotating shaft 12 is connected with the second rotating shaft 22. Of course, when the first connecting member 31 and the second connecting member 32 are connected to each other in an attracting manner, the first connecting member 31 does not separate from the first rotating shaft, and the second connecting member 32 does not separate from the second rotating shaft 22. When the first electromagnetic connecting piece and the second electromagnetic connecting piece are in a connected state, the electromagnetic control module enables the first electromagnetic connecting piece and the second electromagnetic connecting piece to generate like electromagnetic waves, the first electromagnetic connecting piece moves in a direction away from the exposed section of the second rotating shaft along the length direction of the exposed section of the first rotating shaft, the second electromagnetic connecting piece moves in a direction away from the exposed section of the first rotating shaft along the length direction of the exposed section of the second rotating shaft, and therefore the first electromagnetic connecting piece and the second electromagnetic connecting piece repel each other, so that the first rotating shaft 12 is disconnected from the second rotating shaft 22, and the first electromagnetic connecting piece and the second electromagnetic connecting piece are in a disconnected state shown in fig. 3. Fig. 4 shows the first electromagnetic coupling in a coupled state with the second electromagnetic coupling.
In this embodiment, the gear set 23 adopts a transmission manner of a planetary gear mechanism, and as shown in fig. 6, the planetary gear mechanism includes: a sun gear 231, a plurality of planet gears 232, a ring gear 233, a planet carrier 234, and a locking mechanism (not shown). The sun gear 231 is mounted on the second rotating shaft 22, the planetary gears 232 are circumferentially equally arrayed on the carrier 234, and the planetary gears 232 are rotatably mounted on the carrier 234, and the carrier 234 is mounted on a lock mechanism for locking the carrier 234 so that the carrier 234 is kept stationary. The planetary gears 232 are arranged along the periphery of the sun gear 231, and the circle center of the circle where the planetary gears 232 in the circumference halving array pass through the axis of the second rotating shaft 22. The sun gear 231 meshes with the planet gears 232, and the planet gears 232 mesh with the ring gear 233. The ring gear 233 has an outer ring gear 2331 and an inner ring gear 2332, the planet gears 232 are meshed with the inner ring gear 2332, and the outer ring gear 2331 is meshed with the second rack 24.
When the second rotary driving assembly 21 drives the second rotating shaft 22 to rotate clockwise, the sun gear 231 rotates clockwise, the planet gears 232 rotate counterclockwise, and the ring gear 233 rotates counterclockwise under the action of the planet gears 232, so that the gear set 23 outputs torque opposite to the second rotating shaft 22. Similarly, when the second rotary driving assembly 21 drives the second rotating shaft 22 to rotate along the counterclockwise direction, the sun gear 231 rotates along the clockwise direction, the planetary gears 232 rotate along the clockwise direction, and the ring gear 233 rotates along the clockwise direction under the action of the planetary gears 232, so that the gear set 23 outputs the torque opposite to the second rotating shaft 22.
In this embodiment, in order to ensure that the first rack 14 and the second rack 24 can move at the same speed, it is required to ensure that the gear 12 and the outer gear circle 2331 of the gear circle 233 have the same linear speed.
Example II,
The difference between the first embodiment and the second embodiment is that the first connecting member and the second connecting member are different in structure and connection manner, and the first rotating shaft 12 and the second rotating shaft 22 are parallel to each other and are not coaxial. The first connecting piece and the second connecting piece in the embodiment are connected in a manner of meshing two gears.
Referring to fig. 5, in the present embodiment, the first connecting member 31 is a first transmission gear 34, the second connecting member 32 is a second transmission gear 35, and the moving driving module includes a first driving unit 36 and a second driving unit 37. The first driving unit 36 is configured to drive the first transmission gear 34 to move along the axial line of the first rotating shaft 12 toward the end of the first rotating shaft 12, the second driving unit 37 is configured to drive the second transmission gear 35 to move along the axial line of the second rotating shaft 22 toward the end of the second rotating shaft 22, so that the first transmission gear 34 and the second transmission gear 35 move relatively, so that the first transmission gear 34 and the second transmission gear 35 are engaged with each other, so that the first rotating shaft 12 and the second rotating shaft 22 are in a connected state, or the first driving unit 36 is configured to drive the first transmission gear 34 to move along the axial line of the first rotating shaft 12 away from the end of the first rotating shaft 12, the second driving unit 37 is configured to drive the second transmission gear 35 to move along the axial line of the second rotating shaft 22 away from the end of the second rotating shaft 22, so that the first transmission gear 34 and the second transmission gear 36 which are engaged with each other move away from each other, so that the first transmission gear 34 and the second transmission gear 35 are disengaged from each other, and the first rotating shaft 12 and the second rotating shaft 22 are in a disconnected state.
In the present embodiment, the first driving unit 36 and the second driving unit 37 have the same structure, and the first driving unit is illustrated as an example in the drawings. The first drive unit 36 and the second drive unit 37 each include: a linear driving module 361 and a shift fork 362, the shift fork 361 connects the first transmission gear 34 or the second transmission gear 35, and the first transmission gear 34 or the second transmission gear 35 can rotate relative to the shift fork 362. The linear driving module 361 is used for driving the shifting fork 362 to reciprocate along the axis parallel to the first rotating shaft 12 so as to drive the first transmission gear 34 to reciprocate along the axis of the first rotating shaft 12, or the linear driving module 361 is used for driving the shifting fork 362 to reciprocate along the axis parallel to the second rotating shaft 22 so as to drive the second transmission gear 35 to reciprocate along the axis of the second rotating shaft 22.
With continued reference to fig. 5, the linear drive module 361 includes: a linear drive motor 3611, a lead screw 3612, and a lead screw nut 3613. The lead screw 3612 is parallel to the first rotating shaft 12 or the second rotating shaft 22, the linear driving motor 3611 is in transmission connection with the lead screw 3612, the lead screw nut 3613 is in threaded connection with the lead screw 3612, and the shifting fork 362 is fixed on the lead screw nut 3613. The linear driving motor 3611 drives the screw 3612 to rotate, and the screw nut 3613 converts the rotational motion into a linear motion along the length direction of the screw 3612.
Example III,
The present embodiment provides a steering system including: the diverter assembly of embodiments one and two is switchable between diverting modes. All of the structure and features of the steering gear assembly have been described in detail in the above embodiments and will not be described in detail herein.
Referring to fig. 7 and 8, the steering system provided in the present embodiment further includes: a first track rod 101 and a second track rod 102. The first rack 14 is connected with one end of the first tie rod 101 through a spherical hinge pair, the second rack 24 is connected with one end of the second tie rod 201 through a spherical hinge pair, the other end of the first tie rod 101 is connected with the first steering knuckle 201 through a spherical hinge pair, the other end of the second tie rod 102 is connected with the second steering knuckle 202 through a spherical hinge pair, the first steering wheel 301 is installed on the first steering knuckle 201, and the second steering wheel 302 is installed on the second steering knuckle 202.
In summary, in the steering gear assembly and the steering system capable of switching the steering mode provided by the present application, the connection state or the disconnection state of the first rotating shaft and the second rotating shaft is realized through the mutual connection or disconnection state of the first connecting piece and the second connecting piece in the connecting mechanism, so that the first independent steering gear and the second independent steering gear can switch the integral steering mode or the independent steering mode, the driving stability of the vehicle is ensured in the integral steering mode, the special requirements of the vehicle on in-situ steering or transverse form can be met in the independent steering mode, and the driving maneuverability of the vehicle is improved.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (10)
1. A diverter assembly switchable between diverting modes, comprising:
a first independent diverter comprising: a first rotary drive assembly, a first shaft, a gear, and a first rack; the gear is arranged on the first rotating shaft and meshed with the first rack; the first rotary driving component is used for driving the first rotating shaft to rotate;
a second independent diverter comprising: the second rotary driving component, the second rotating shaft, the gear set and the second rack; the gear set is arranged on the second rotating shaft and is meshed with the second rack; the second rotary driving assembly is used for driving the second rotating shaft to rotate, and the gear set can output torque in the direction opposite to that of the second rotating shaft; the first rotating shaft and the second rotating shaft are parallel to each other;
a coupling mechanism comprising: a first connecting piece and a second connecting piece; the first connecting piece is slidably arranged on the first rotating shaft, the second connecting piece is slidably arranged on the second rotating shaft, and the first connecting piece and the second connecting piece can move relatively to be in a connected state or can move oppositely to be in a disconnected state; in a connection state, one of the first rotary driving component and the second rotary driving component works, and the first rotating shaft and the second rotating shaft keep rotating synchronously; in the off state, the first rotary drive assembly and the second rotary drive assembly operate simultaneously and independently.
2. The switchable steering mode diverter assembly of claim 1 wherein said first rotatable shaft and said second rotatable shaft may or may not be coaxial.
3. The switchable steering mode diverter assembly of claim 2 wherein said coupling mechanism further comprises: and the movement driving module is used for driving the first connecting piece to move along the axial line of the first rotating shaft towards the direction of the second connecting piece and driving the second connecting piece to move along the axial line of the second rotating shaft towards the direction of the first connecting piece so as to enable the first connecting piece and the second connecting piece to move relatively, or driving the first connecting piece to move along the axial line of the first rotating shaft away from the direction of the second connecting piece and driving the second connecting piece to move along the axial line of the second rotating shaft away from the direction of the first connecting piece so as to enable the first connecting piece and the second connecting piece to move away from each other.
4. The steering gear assembly with switchable steering modes according to claim 3, wherein the moving driving module is an electromagnetic control module, the first connecting member is a first electromagnetic connecting member, the second connecting member is a second electromagnetic connecting member, and the electromagnetic control module is configured to control the first electromagnetic connecting member and the second electromagnetic connecting member to generate different electromagnetic fields, so that the first electromagnetic connecting member moves along the axial line of the first rotating shaft toward the second electromagnetic connecting member, and the second electromagnetic connecting member moves along the axial line of the second rotating shaft toward the first electromagnetic connecting member, so that the first electromagnetic connecting member and the second electromagnetic connecting member move relative to each other to be in a connected state, or the first electromagnetic connecting member and the second electromagnetic connecting member are controlled to generate same electromagnetic fields, so that the first electromagnetic connecting piece moves along the direction of deviating from the second electromagnetic connecting piece along the axial lead of the first rotating shaft, and the second electromagnetic connecting piece moves along the direction of deviating from the first electromagnetic connecting piece along the axial lead of the second rotating shaft, so that the first electromagnetic connecting piece and the second electromagnetic connecting piece deviate from each other to move and are in a disconnected state.
5. The switchable steering mode diverter assembly of claim 3 wherein said first linkage is a first transfer gear and said second linkage is a second transfer gear, said mobile drive module comprising a first drive unit and a second drive unit; the first driving unit is used for driving the first transmission gear to move towards the end of the first rotating shaft along the axial line of the first rotating shaft, the second driving unit is used for driving the second transmission gear to move towards the end of the second rotating shaft along the axial line of the second rotating shaft so as to enable the first transmission gear and the second transmission gear to move relatively, therefore, the first transmission gear and the second transmission gear are meshed with each other to be in a connection state, or the first driving unit is used for driving the first transmission gear to move away from the end of the first rotating shaft along the axial line of the first rotating shaft, the second driving unit is used for driving the second transmission gear to move away from the end of the second rotating shaft along the axial line of the second rotating shaft so as to enable the first transmission gear and the second transmission gear to move away from each other, so that the first transmission gear and the second transmission gear are disengaged from each other to be in a disconnected state.
6. The switchable steering mode diverter assembly of claim 5, wherein said first drive unit and said second drive unit each comprise: the linear driving module and the shifting fork are connected with the first transmission gear or the second transmission gear, and the first transmission gear or the second transmission gear can rotate relative to the shifting fork; the linear driving module is used for driving the shifting fork to reciprocate along an axis parallel to the first rotating shaft or an axis parallel to the second rotating shaft.
7. The switchable steering mode diverter assembly of claim 6, wherein said linear drive module comprises: a linear drive motor, a lead screw, and a lead screw nut; the lead screw is parallel to the first rotating shaft or the second rotating shaft, the linear driving motor is in transmission connection with the lead screw, the lead screw nut is in threaded connection with the lead screw, and the shifting fork is fixed on the lead screw nut.
8. The switchable steering mode diverter assembly of claim 1 wherein said gear set is a planetary gear mechanism comprising: the locking mechanism comprises a sun gear, a plurality of planet gears, a gear ring, a planet carrier and a locking mechanism; the sun gear is mounted on the second rotating shaft, the plurality of planet gears are rotatably mounted on the planet carrier, the planet carrier is mounted on the locking mechanism, and the locking mechanism is used for locking the planet carrier so as to keep the planet carrier fixed; the plurality of planet wheels are distributed along the periphery of the sun wheel, the sun wheel is meshed with the planet wheels, and the planet wheels are meshed with the gear ring; the gear ring is provided with an outer gear ring and an inner gear ring, the planet gear is meshed with the inner gear ring, and the outer gear ring is meshed with the second rack.
9. The switchable steering mode diverter assembly of claim 8 wherein the linear speed of said gear is the same as the linear speed of said outer ring gear.
10. A steering system, comprising: a switchable steering mode diverter assembly according to any one of claims 1-9.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114572297A (en) * | 2022-05-05 | 2022-06-03 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | Steering gear assembly capable of switching steering modes, steering system and vehicle |
| CN117072742A (en) * | 2023-10-12 | 2023-11-17 | 常州诚磊阀门科技股份有限公司 | valve actuator |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100106375A1 (en) * | 2008-10-27 | 2010-04-29 | Ahmed A K Waizuddin | Steering system and method for independent steering of wheels |
| JP2016022756A (en) * | 2014-07-16 | 2016-02-08 | Ntn株式会社 | Steering system with in-wheel motor of amphibious vehicle |
| CN105658503A (en) * | 2013-11-14 | 2016-06-08 | Ntn株式会社 | Vehicular |
| JP2016137874A (en) * | 2015-01-29 | 2016-08-04 | Ntn株式会社 | Steering device and vehicle including the same |
| US20160236710A1 (en) * | 2013-09-26 | 2016-08-18 | Ntn Corporation | Steering device |
| CN107444101A (en) * | 2017-05-03 | 2017-12-08 | 北京理工大学 | A kind of unmanned platform of all-wheel steering by In-wheel motor driving |
| CN112543727A (en) * | 2020-09-08 | 2021-03-23 | 华为技术有限公司 | Steering mechanism, steering system, vehicle and control method |
-
2021
- 2021-12-10 CN CN202111502143.9A patent/CN113895509B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100106375A1 (en) * | 2008-10-27 | 2010-04-29 | Ahmed A K Waizuddin | Steering system and method for independent steering of wheels |
| US20160236710A1 (en) * | 2013-09-26 | 2016-08-18 | Ntn Corporation | Steering device |
| CN105658503A (en) * | 2013-11-14 | 2016-06-08 | Ntn株式会社 | Vehicular |
| JP2016022756A (en) * | 2014-07-16 | 2016-02-08 | Ntn株式会社 | Steering system with in-wheel motor of amphibious vehicle |
| JP2016137874A (en) * | 2015-01-29 | 2016-08-04 | Ntn株式会社 | Steering device and vehicle including the same |
| CN107444101A (en) * | 2017-05-03 | 2017-12-08 | 北京理工大学 | A kind of unmanned platform of all-wheel steering by In-wheel motor driving |
| CN112543727A (en) * | 2020-09-08 | 2021-03-23 | 华为技术有限公司 | Steering mechanism, steering system, vehicle and control method |
Non-Patent Citations (1)
| Title |
|---|
| 于蕾艳，林逸，施国标: "四轮线控转向系统的转向控制策略研究", 《计算机仿真》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114572297A (en) * | 2022-05-05 | 2022-06-03 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | Steering gear assembly capable of switching steering modes, steering system and vehicle |
| CN117072742A (en) * | 2023-10-12 | 2023-11-17 | 常州诚磊阀门科技股份有限公司 | valve actuator |
| CN117072742B (en) * | 2023-10-12 | 2024-01-19 | 常州诚磊阀门科技股份有限公司 | Valve actuator |
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| CN113895509B (en) | 2022-03-25 |
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