CN118205612A

CN118205612A - Automobile steering power assisting device and automobile

Info

Publication number: CN118205612A
Application number: CN202410510821.3A
Authority: CN
Inventors: 吴永飞; 徐青龙
Original assignee: Chongqing Changan Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2024-04-26
Filing date: 2024-04-26
Publication date: 2024-06-18

Abstract

The embodiment of the application provides an automobile steering power assisting device and an automobile, wherein the automobile steering power assisting device comprises a steering system, a steering wheel power assisting mechanism and an electromagnetic steering power assisting mechanism; the steering system comprises a steering wheel, a transmission shaft lever, a steering lever and a triggering device; the steering wheel booster mechanism comprises a first transmission part, a second transmission part and an electromagnetic driver, wherein the first transmission part is arranged on the transmission shaft lever; the electromagnetic steering power assisting mechanism comprises a first electromagnetic coil, a first magnetic attraction piece and a first conductive terminal, and the steering rod is movably arranged in the first electromagnetic coil in a penetrating way; when the steering wheel triggers the triggering device through rotation, the electromagnetic driver is electrified, the second transmission piece moves under the action of electromagnetic driving force of the electromagnetic driver, so that the first transmission piece drives the transmission shaft rod to rotate, the transmission shaft rod drives the steering rod to move along the axial direction, and the first conductive terminal conducts the first electromagnetic coil so as to apply electromagnetic driving force to the steering rod. The automobile steering power assisting device provided by the embodiment of the application can improve the steering power assisting effect.

Description

Automobile steering power assisting device and automobile

Technical Field

The application relates to the technical field of automobile steering assistance, in particular to an automobile steering assistance device and an automobile.

Background

During the driving process of a vehicle, it is often necessary to change its direction of travel, i.e. steering. The method for changing the running direction of the automobile is that a driver operates a steering wheel according to running requirements and deflects the steering wheel of the automobile by a corresponding angle relative to the longitudinal axis of the automobile through a steering system. Because the steering operation is very frequent during the running process of the automobile, if the force required by the driver to operate the steering wheel is large, the driver is extremely easy to fatigue, and therefore, the power-assisted steering system is commonly installed in various automobiles with large total mass and middle and high-grade cars. The power-assisted steering system is provided with a steering power assisting device, and the power-assisted steering system controls the automobile steering system so that part of the control force required by the steering running of the automobile is provided by the arm of a driver, and the other part of the control force is from the steering power assisting device.

The power of the hydraulic power steering device is from a power steering oil pump driven by an automobile engine, and the power of the electric power steering device is from a power steering motor. Although both the steering assist devices can solve the problem of heavy steering, the two steering assist devices have obvious disadvantages, for example, the hydraulic steering assist device has relatively poor sensitivity and accuracy due to the structural reasons, and when the electric steering assist device encounters a situation that the steering assist device needs to turn in time in the process of assisting the steering, the steering assist motor needs a certain buffering time to execute the actions of stopping and turning due to the action of inertia force, so that the steering assist device is easy to cause a pause feeling, influence the driving experience and even prevent a driver from controlling the steering wheel to turn quickly in emergency.

Disclosure of Invention

In view of the foregoing, it is desirable to provide an automobile steering assist device and an automobile capable of improving the steering assist effect.

To achieve the above object, an embodiment of the present application provides an automotive steering assist device, including:

The steering system comprises a steering wheel, a transmission shaft rod, a steering rod and a triggering device, wherein the steering wheel and the steering rod are respectively arranged at two opposite ends of the transmission shaft rod, and the triggering device is matched with the steering wheel;

The steering wheel power assisting mechanism comprises a first transmission part, a second transmission part and an electromagnetic driver, wherein the first transmission part is arranged on the transmission shaft rod and is in transmission connection with the second transmission part, and the electromagnetic driver is matched with the second transmission part;

The electromagnetic steering power assisting mechanism comprises a first electromagnetic coil, a first magnetic attraction piece and a first conductive terminal, the steering rod is movably arranged in the first electromagnetic coil in a penetrating mode, and the first magnetic attraction piece and the first conductive terminal are arranged on the steering rod;

When the steering wheel triggers the triggering device through rotation, the electromagnetic driver is electrified to generate electromagnetic driving force, the second transmission piece moves under the action of the electromagnetic driving force generated by the electromagnetic driver, so that the first transmission piece drives the transmission shaft rod to rotate along the same rotation direction as the steering wheel, the transmission shaft rod drives the steering rod to move along the axial direction in the rotation process, the first conductive terminal is conducted on the first electromagnetic ring, and the first electromagnetic ring is in magnetic attraction fit with the first magnetic attraction piece so as to apply the electromagnetic driving force which is in the same direction as the movement direction of the steering rod to the steering rod.

In one embodiment, the steering rod is movable in a first direction or a second direction opposite to the first direction along an axial direction;

The electromagnetic steering power-assisted mechanisms are multiple in number, and when the steering rod moves in the first direction along the axial direction, the first conductive terminals of part of the electromagnetic steering power-assisted mechanisms conduct the corresponding first electromagnetic coils; when the steering rod moves along the axial direction towards the second direction, the first conductive terminal of the other part of the electromagnetic steering assisting mechanism conducts the corresponding first electromagnetic coil; or alternatively, the first and second heat exchangers may be,

The electromagnetic steering power assisting mechanism comprises two first magnetic attraction pieces and two first conductive terminals, the two first magnetic attraction pieces are arranged at intervals along the axial direction of the steering rod, the two first magnetic attraction pieces are respectively positioned at two opposite sides of the first electromagnetic coil along the axial direction of the steering rod in an initial state of the steering rod, and the first conductive terminals are in one-to-one correspondence with the first magnetic attraction pieces; the two first conductive terminals selectively conduct the first electromagnetic coil, so that the first electromagnetic coil changes the magnetic field direction and is in magnetic attraction fit with the corresponding first magnetic attraction piece.

In one embodiment, at least one electromagnetic steering assistance mechanism is arranged on two opposite sides of the transmission shaft rod respectively.

In one embodiment, the number of the first electromagnetic coils is a plurality, each first electromagnetic coil is arranged along the axial direction of the steering rod, and the transmission shaft rod drives the steering rod to move along the axial direction in the rotating process, so that one first electromagnetic coil is conducted by the first conductive terminal.

In one embodiment, the first electromagnetic coil comprises a coil body and a second conductive terminal, the coil body is provided with an electromagnetic channel, the steering rod is movably arranged in the electromagnetic channel in a penetrating mode, the second conductive terminal is arranged on one side, away from the electromagnetic channel, of the coil body, and the first conductive terminal is in conductive contact with the second conductive terminal to conduct the first electromagnetic coil; and in a state that the first magnetic attraction piece is in magnetic attraction fit with the first electromagnetic coil, at least part of the area of the first magnetic attraction piece is positioned in the electromagnetic channel.

In one embodiment, the electromagnetic steering assist mechanism comprises a support frame, the support frame comprises a frame body and a support rod, the frame body is connected with the steering rod and is located on one side of the first magnetic attraction piece along the axial direction of the steering rod, the support rod is arranged on the frame body and extends towards the direction where the first magnetic attraction piece is located, and the first conductive terminal is arranged at one end of the support rod, which is close to the first magnetic attraction piece.

In one embodiment, the electromagnetic steering assist mechanism includes a first sleeve having an avoidance port, the first electromagnetic coil is disposed in the first sleeve, and the avoidance port avoids the second conductive terminal.

In one embodiment, the first magnetic attraction piece is annular, and the first magnetic attraction piece is sleeved on the outer surface of the steering rod.

In one embodiment, the electromagnetic driver includes a second electromagnetic coil and a second magnetic attraction piece, the second transmission piece movably penetrates through the second electromagnetic coil, the second magnetic attraction piece is arranged on the second transmission piece, at least part of the second magnetic attraction piece is located in the second electromagnetic coil, and when the steering wheel triggers the trigger device through rotation, the second electromagnetic coil is electrified and is in magnetic attraction fit with the second magnetic attraction piece so as to drive the second transmission piece to move.

In one embodiment, the number of the electromagnetic drivers is two, the two electromagnetic drivers are respectively located at two opposite sides of the transmission shaft lever, and the second magnetic attraction pieces of the electromagnetic drivers are respectively arranged on the second transmission piece;

When the steering wheel rotates along a first rotating direction and triggers the triggering device, the second electromagnetic coil of one electromagnetic driver is electrified so as to drive the second transmission piece to move towards the first direction; when the steering wheel rotates in a second rotating direction opposite to the first rotating direction, the triggering device is triggered, and the second electromagnetic coil of the other electromagnetic driver is electrified to drive the second transmission piece to move in a second direction opposite to the first direction.

In one embodiment, the second electromagnetic coil changes the direction of the magnetic field to change the movement direction of the second transmission member, so that the rotation direction of the first transmission member driving the transmission shaft to rotate is consistent with the rotation direction of the steering wheel.

In one embodiment, the number of the second electromagnetic coils is plural, each of the second electromagnetic coils is arranged along the movement direction of the second transmission member, and when the steering wheel triggers the triggering device through rotation, all the second electromagnetic coils are electrified.

In one embodiment, the electromagnetic drive includes a second sleeve, the second electromagnetic coil being disposed within the second sleeve.

In one embodiment, the triggering device comprises a mounting main body, a first triggering piece and two second triggering pieces, wherein the two second triggering pieces are arranged on the mounting main body, the first triggering pieces are arranged on the steering wheel or the transmission shaft rod, the two second triggering pieces are arranged at intervals along the rotation direction of the steering wheel, and when the steering wheel is in an initial position, the two second triggering pieces are respectively positioned at two opposite sides of the first triggering piece along the rotation direction of the steering wheel; the steering wheel causes the first trigger member to trigger one of the two second trigger members by rotating relative to the mounting body.

In one embodiment, the mounting body has a mounting hole, the transmission shaft comprises a first shaft fixedly connected with the steering wheel, the first shaft is rotatably inserted in the mounting hole, and the first trigger is disposed on the first shaft.

In one embodiment, the transmission shaft lever comprises a first shaft lever fixedly connected with the steering wheel and a second shaft lever rotationally connected with the first shaft lever, and the second transmission piece is arranged on the second shaft lever;

The second shaft rod is in transmission connection with the steering rod; or, the transmission shaft lever comprises a third shaft lever rotationally connected with the second shaft lever, and the third shaft lever is in transmission connection with the steering lever.

In one embodiment, the first transmission member is a first gear, and the second transmission member is a first rack meshed with the first gear; and/or the number of the groups of groups,

The steering system comprises a second gear and a second rack which are meshed with each other, the second gear is arranged on the transmission shaft rod, and the second rack is arranged on the steering rod.

The application further provides an automobile, which comprises wheel assemblies and the automobile steering power assisting device, wherein the wheel assemblies are respectively arranged at the opposite ends of the steering rod, and each wheel assembly is respectively and movably connected with the steering rod.

In one embodiment, the wheel assembly comprises a wheel and a mounting seat with a sliding hole, the wheel is rotationally connected with the mounting seat, the automobile steering assisting device comprises two first sliding rods and two first springs, the two first sliding rods are respectively arranged at two opposite ends of the steering rod, each first sliding rod extends along the height direction of the automobile and movably penetrates through the corresponding sliding hole of the mounting seat, and each first spring is respectively sleeved on the corresponding first sliding rod and is in butt joint with the corresponding first sliding rod and the corresponding mounting seat.

In one embodiment, the automobile steering power assisting device comprises a frame, two second sliding rods and two second springs, wherein the mounting seat is provided with a shaft hole, the two second sliding rods are respectively connected with the frame and extend along the height direction of the automobile, each second sliding rod movably penetrates through the corresponding shaft hole of the mounting seat, and each second spring is respectively sleeved on the corresponding second sliding rod and is in butt joint with the frame and the corresponding mounting seat.

The embodiment of the application provides an automobile steering power assisting device and an automobile, wherein an electromagnetic driver is arranged at a transmission shaft rod of the automobile steering power assisting device, an electromagnetic steering power assisting mechanism is arranged at a steering rod of the automobile steering power assisting device, and the electromagnetic driving force of the electromagnetic driver and the electromagnetic steering power assisting mechanism is utilized to realize steering power assistance, so that steering operation is more labor-saving, the sensitivity and the accuracy of the steering power assistance can be improved, in addition, no pause feeling is generated in the steering process, and the driving experience feeling is good. Compared with the steering assist device in the related art, the steering assist device for the automobile can improve the steering assist effect.

Drawings

FIG. 1 is a schematic diagram of a connection relationship between an automobile steering assist device and a wheel assembly of an automobile according to an embodiment of the present application, wherein double-headed arrows in the diagram indicate a movement direction of a steering rod;

FIG. 2 is a schematic view of a portion of the steering system and a portion of the steering wheel assist mechanism shown in FIG. 1;

FIG. 3 is a schematic diagram illustrating a connection relationship between the triggering device shown in FIG. 2 and a first shaft;

FIG. 4 is a schematic diagram illustrating a connection relationship between the second shaft and the steering wheel assist mechanism shown in FIG. 2;

FIG. 5 is a schematic diagram illustrating a connection relationship between the third shaft and the steering rod shown in FIG. 2;

FIG. 6 is a schematic diagram of the connection between the electromagnetic steering assist mechanism and the steering rod shown in FIG. 1;

FIG. 7 is a schematic illustration of the connection of the steering rod, frame and wheel assembly of FIG. 1;

fig. 8 is a schematic diagram of a connection relationship between an electromagnetic steering assist mechanism and a steering rod according to another embodiment of the present application, in which double-headed arrows indicate the movement direction of the steering rod.

Description of the reference numerals

10. An automobile steering power assisting device; 11. a steering system; 111. a steering wheel; 112. a transmission shaft lever; 1121. a first shaft; 1122. a second shaft; 1123. a third shaft; 1124. a second gear; 1125. a second rack; 1126. a first universal joint; 1127. a second universal joint; 113. a steering lever; 114. a triggering device; 1141. a mounting main body; 1142. a first trigger; 1143. a second trigger; 12. steering wheel booster mechanism; 121. a first transmission member; 122. a second transmission member; 123. an electromagnetic driver; 1231. a second electromagnetic coil; 1232. a second magnetic attraction member; 1233. a second sleeve; 13. an electromagnetic steering assist mechanism; 13a, a first steering assist mechanism; 13b, a second steering assist mechanism; 131. a first electromagnetic coil; 1311. a ring body; 1311a, electromagnetic channels; 1312. a second conductive terminal; 132. a first magnetic attraction member; 133. a first conductive terminal; 134. a support frame; 1341. a frame body; 1342. a support rod; 135. a first sleeve; 14. a frame; 15. a first slide bar; 16. a first spring; 17. a second slide bar; 18. a second spring; 20. a wheel assembly; 21. a wheel; 22. a mounting base; 22a, slide holes; x1, a first direction; x2, second direction.

Detailed Description

An embodiment of the present application provides an automobile, referring to fig. 1 to 6, which includes a wheel assembly 20 and an automobile steering assist device 10.

Referring to fig. 1 to 6, an automotive steering assist device 10 according to an embodiment of the present application includes a steering system 11, a steering wheel assist mechanism 12, and an electromagnetic steering assist mechanism 13.

The steering system 11 includes a steering wheel 111, a transmission shaft 112, a steering rod 113, and a triggering device 114, the steering wheel 111 and the steering rod 113 being disposed at opposite ends of the transmission shaft 112, respectively, and the triggering device 114 being engaged with the steering wheel 111.

The wheel assembly 20 includes wheels 21, and a drive shaft 112 is drivingly connected to a steering rod 113 for effecting steering of the wheels 21. The transmission shaft 112 is in driving connection with the steering rod 113 in a non-limiting manner, and referring to fig. 5, for example, the steering system 11 may be provided with a second gear 1124 and a second rack 1125 that are meshed with each other, the second gear 1124 being provided on the transmission shaft 112, and the second rack 1125 being provided on the steering rod 113, that is, the transmission shaft 112 and the steering rod 113 may be in driving connection through the second gear 1124 and the second rack 1125.

Referring to fig. 1,2 and 5, the extending direction of the steering rod 113 intersects with the extending direction of the transmission shaft 112, the opposite ends of the steering rod 113 are respectively provided with wheel assemblies 20, and each wheel assembly 20 is movably connected with the steering rod 113. During the process of turning the steering wheel 111 by the driver, the transmission shaft lever 112 drives the steering rod 113 to move along the axial direction of the steering rod 113, and the steering rod 113 drives the wheel assembly 20 to move, so that the steering of the wheels 21 is realized.

It should be noted that the steering wheel 111 may rotate in a first rotation direction or may rotate in a second rotation direction opposite to the first rotation direction (i.e., a left rotation or a right rotation in general), and accordingly, the steering rod 113 may move in the first direction X1 in the axial direction or may move in the second direction X2 opposite to the first direction X1 in the axial direction, for example, when the steering wheel 111 rotates in the first rotation direction, the steering rod 113 may move in the first direction X1 in the axial direction, and when the steering wheel 111 rotates in the second rotation direction, the steering rod 113 may move in the second direction X2 in the axial direction, thereby enabling a left rotation or a right rotation of the vehicle.

Referring to fig. 1, 2 and 4, the steering wheel booster 12 includes a first transmission member 121, a second transmission member 122 and an electromagnetic driver 123, where the first transmission member 121 is disposed on the transmission shaft 112 and is in transmission connection with the second transmission member 122, and the electromagnetic driver 123 is matched with the second transmission member 122.

The electromagnetic driver 123 is configured to provide an electromagnetic driving force to the second transmission member 122. Specifically, after the electromagnetic driver 123 is energized, an electromagnetic driving force can be generated, the second transmission member 122 moves under the action of the electromagnetic driving force, and the second transmission member 122 drives the first transmission member 121 to move during the movement process, so that the first transmission member 121 drives the transmission shaft lever 112 to rotate along the same rotation direction as the steering wheel 111.

The manner in which the first transmission member 121 is in transmission connection with the second transmission member 122 is not limited as long as the transmission shaft 112 can be driven to rotate in the same rotation direction as the steering wheel 111, for example, referring to fig. 2 and 4, the first transmission member 121 may be a first gear, and the second transmission member 122 may be a first rack meshed with the first gear.

With continued reference to fig. 1 and 6, the electromagnetic steering assist mechanism 13 includes a first electromagnetic coil 131 and a first magnetic attraction member 132, the steering rod 113 movably penetrates the first electromagnetic coil 131, and the first magnetic attraction member 132 and the first conductive terminal 133 are both disposed on the steering rod 113. The steering rod 113 is movable in the axial direction with respect to the first electromagnetic coil 131.

Referring to fig. 1 and 6, the electromagnetic steering assist mechanism 13 may be provided with a first sleeve 135, and the first electromagnetic coil 131 may be fixed within the first sleeve 135.

For facilitating the fixing of the first electromagnetic coil 131, for example, referring to fig. 1, the vehicle steering assist device 10 may be provided with a frame 14, and the first electromagnetic coil 131 may be directly or indirectly fixed to the frame 14, for example, for the electromagnetic steering assist mechanism 13 having the first sleeve 135, the first sleeve 135 may be fixedly connected to the frame 14.

In other embodiments, the vehicle steering assist device 10 may be provided without the frame 14, for example, the first electromagnetic coil 131 may be directly or indirectly fixed to other components of the vehicle.

The first electromagnetic coil 131 magnetically cooperates with the first magnetic attraction member 132 to provide an electromagnetic driving force to the steering rod 113, and the first conductive terminal 133 is used to conduct the first electromagnetic coil 131. Specifically, after the first conductive terminal 133 turns on the first electromagnetic coil 131, the first electromagnetic coil 131 is energized and generates a magnetic field, and the first electromagnetic coil 131 magnetically engages with the first magnetic attraction member 132 by using the magnetic field, whereby an electromagnetic driving force in the axial direction can be provided to the steering rod 113.

It should be noted that, in the state where the first magnetic attraction member 132 is in magnetic attraction engagement with the first electromagnetic coil 131, at least a part of the area of the first magnetic attraction member 132 is located in the first electromagnetic coil 131, but before the steering rod 113 moves in the axial direction, at least a part of the area of the first magnetic attraction member 132 may be located in the first electromagnetic coil 131, or any area of the first magnetic attraction member 132 may not be located in the first electromagnetic coil 131, that is, the entire first magnetic attraction member 132 is not located in the first electromagnetic coil 131.

Referring to fig. 1, when the steering wheel 111 is rotated to trigger the triggering device 114, the electromagnetic driver 123 is energized to generate an electromagnetic driving force, the second transmission member 122 moves under the electromagnetic driving force generated by the electromagnetic driver 123, so that the first transmission member 121 drives the transmission shaft 112 to rotate along the same rotation direction as the steering wheel 111, the transmission shaft 112 drives the steering rod 113 to move axially during rotation, so that the first conductive terminal 133 conducts the first electromagnetic coil 131, and the first electromagnetic coil 131 magnetically cooperates with the first magnetic attraction member 132 to apply an electromagnetic driving force to the steering rod 113 in the same direction as the movement direction of the steering rod 113.

That is, when the steering wheel 111 is turned, the steering wheel 111 is turned to a position where the trigger 114 is triggered and the trigger 114 is triggered, after the trigger 114 is triggered, the electromagnetic driver 123 is energized and generates an electromagnetic driving force, the second transmission member 122 moves to drive the first transmission member 121 under the electromagnetic driving force generated by the electromagnetic driver 123, and since the first transmission member 121 is disposed on the transmission shaft 112, the first transmission member 121 can drive the transmission shaft 112 to rotate in the same rotation direction as the steering wheel 111 during the movement, that is, when the steering wheel 111 rotates in the first rotation direction, the transmission shaft 112 also rotates in the first rotation direction, and when the steering wheel 111 rotates in the second rotation direction, the transmission shaft 112 also rotates in the second rotation direction. The transmission shaft lever 112 may drive the steering rod 113 to move in the axial direction of the steering rod 113 during rotation, and the steering rod 113 moves together with the steering rod 113 during axial movement of the steering rod 113 itself, the first conductive terminal 133 being provided on the steering rod 113. When the first conductive terminal 133 moves to a position where the first electromagnetic coil 131 can be conducted, the first conductive terminal 133 conducts the first electromagnetic coil 131 to energize the first electromagnetic coil 131, and after the first electromagnetic coil 131 is energized, the first electromagnetic coil is magnetically engaged with the first magnetic attraction member 132 to apply an electromagnetic driving force to the steering rod 113 in the same direction as the movement direction of the steering rod 113, that is, an electromagnetic driving force is applied to the steering rod 113 in the axial direction of the steering rod 113, and the direction of the electromagnetic driving force is the same as the direction in which the transmission shaft 112 drives the steering rod 113 to move in the axial direction thereof, thereby acting as a steering assist force.

It will be appreciated that the vehicle is provided with a controller in signal communication with the triggering device 114, the electromagnetic drive 123 and the electromagnetic steering assist mechanism 13 for effecting the control actions described above.

The steering assist force described above can be achieved when the steering wheel 111 is turned in any direction.

According to the automobile steering power assisting device 10 provided by the embodiment of the application, the electromagnetic driver 123 is arranged at the transmission shaft lever 112, the electromagnetic steering power assisting mechanism 13 is arranged at the steering rod 113, and the electromagnetic driving force of the electromagnetic driver 123 and the electromagnetic steering power assisting mechanism 13 is utilized to realize steering power assistance, so that steering operation is more labor-saving, the sensitivity and accuracy of the steering power assistance can be improved, in addition, no pause feeling is generated in the steering process, and the driving experience feeling is better. The automobile steering assist device 10 of the embodiment of the application can improve the steering assist effect as compared with the steering assist device in the related art.

In one embodiment, referring to fig. 2, the transmission shaft 112 includes a first shaft 1121 and a second shaft 1122, the first shaft 1121 is fixedly connected to the steering wheel 111, the first shaft 1121 is rotatably connected to the second shaft 1122, and a first universal joint 1126 is provided between the first shaft 1121 and the second shaft 1122. The second transmission 122 may be disposed on the second shaft 1122.

The transmission shaft 112 shown in fig. 2 is further provided with a third shaft 1123, the second shaft 1122 being in rotational connection with the third shaft 1123, the rotational connection between the second shaft 1122 and the third shaft 1123 being, for example, realized by providing a second universal joint 1127. The third shaft 1123 is in driving connection with the steering rod 113, i.e. for the steering system 11 in driving connection via the second gearwheel 1124 and the second rack 1125, the second gearwheel 1124 is arranged on the third shaft 1123.

In other embodiments, the transmission shaft 112 may not include the third shaft 1123, for example, the second shaft 1122 may be in driving connection with the steering rod 113, i.e., the second gear 1124 may be disposed on the second shaft 1122.

In an embodiment, referring to fig. 1 to 3, the triggering device 114 includes a mounting body 1141, a first triggering element 1142, and two second triggering elements 1143 disposed on the mounting body 1141, the first triggering element 1142 is disposed on the steering wheel 111 or the transmission shaft 112, the two second triggering elements 1143 are disposed at intervals along the rotation direction of the steering wheel 111, and when the steering wheel 111 is in the initial position, the two second triggering elements 1143 are respectively located on two opposite sides of the first triggering element 1142 along the rotation direction of the steering wheel 111. The steering wheel 111 causes the first trigger 1142 to trigger one of the two second triggers 1143 by rotating relative to the mounting body 1141.

Specifically, the mounting body 1141 shown in FIG. 1 is secured to the frame 14, and in other embodiments, the mounting body 1141 may be secured to other components of the vehicle.

Taking the transmission shaft 112 shown in fig. 1 to 3 as an example, the mounting body 1141 may be provided with a mounting hole (not shown) in which the first shaft 1121 is rotatably inserted, i.e., the first shaft 1121 may be rotated. The first trigger 1142 is disposed on the first shaft 1121, and during rotation of the steering wheel 111, the first trigger 1142 rotates with the first shaft 1121, and since the two second trigger 1143 are disposed on the mounting body 1141 at intervals along the rotation direction of the steering wheel 111, and when the steering wheel 111 is in the initial position, the two second trigger 1143 are disposed on opposite sides of the first trigger 1142 along the rotation direction of the steering wheel 111, respectively, when the steering wheel 111 rotates along the first rotation direction, the first trigger 1142 can rotate to the position where one of the second trigger 1143 is located and trigger the second trigger 1143 at the position, and when the steering wheel 111 rotates along the second rotation direction, the first trigger 1142 can rotate to the position where the other second trigger 1143 is located and trigger the second trigger 1143 at the position, thereby enabling the steering wheel 111 to rotate in any direction and triggering the device 114.

It should be noted that, the first trigger member 1142 shown in fig. 3 contacts a side of each second trigger member 1143 near the steering wheel 111 to implement triggering, so the first trigger member 1142 does not limit the normal rotation of the steering wheel 111, and in other embodiments, the first trigger member 1142 may contact a side of each second trigger member 1143 away from the steering wheel 111 to implement triggering, or the first trigger member 1142 may contact a side of each second trigger member 1143 near the first shaft 1121 to implement triggering.

The trigger 114 is disposed at the first shaft 1121, which may facilitate both the installation of the trigger 114 and the triggering of the trigger 114 by the rotation of the steering wheel 111.

In some embodiments, the trigger 114 may also be disposed at the second shaft 1122, i.e., the second shaft 1122 rotatably disposed through the mounting hole of the mounting body 1141, with the first trigger 1142 disposed on the second shaft 1122.

In some embodiments, the first trigger 1142 may not be disposed on the drive shaft 112, e.g., the first trigger 1142 may be disposed on the steering wheel 111, and the mounting body 1141 is fixed near the first trigger 1142 so that the first trigger 1142 can cooperate with the two second triggers 1143 to effect triggering.

In an embodiment, referring to fig. 6, the first magnetic member 132 may be annular, and the first magnetic member 132 is sleeved on the outer surface of the steering rod 113. The annular first magnetic attraction member 132 is convenient to be mounted on the steering rod 113, and can provide electromagnetic driving force for the steering rod 113 on the whole periphery of the steering rod 113 by being in magnetic attraction fit with the first electromagnetic coil 131 after the first electromagnetic coil 131 is electrified, so that assistance can be better provided for the movement of the steering rod 113.

In other embodiments, the first magnetic member 132 may not be annular, for example, the first magnetic member 132 may be any of a long strip, a block, or the like, and the first magnetic member 132 may be fixed on one side of the steering rod 113.

In an embodiment, referring to fig. 6, the number of the first electromagnetic coils 131 may be plural, each first electromagnetic coil 131 is arranged along the axial direction of the steering rod 113, and the transmission shaft 112 drives the steering rod 113 to move along the axial direction during rotation, so that the first conductive terminal 133 conducts one of the first electromagnetic coils 131. That is, during the axial movement of the steering rod 113, the first conductive terminal 133 moves to the position of the corresponding first solenoid 131, and turns on the first solenoid 131 at that position.

Generally, during the steering process, the steering rod 113 will move along the axial direction for a certain distance, so that the first electromagnetic coils 131 are disposed, so that the first electromagnetic coils 131 can be magnetically engaged with the first magnetic attraction piece 132 as much as possible during the process of moving the steering rod 113 along the axial direction, thereby prolonging the acting duration of the electromagnetic driving force and further improving the steering assistance effect.

In other embodiments, only one first electromagnetic coil 131 may be provided, and the axial dimension of the first electromagnetic coil 131 may be increased as much as possible to enhance the steering assist effect.

In an embodiment, referring to fig. 6, the first electromagnetic coil 131 may include a coil body 1311 and a second conductive terminal 1312, the coil body 1311 has an electromagnetic channel 1311a, the steering rod 113 movably passes through the electromagnetic channel 1311a, the first magnetic attraction member 132 is located in the electromagnetic channel 1311a, the second conductive terminal 1312 is disposed on a side of the coil body 1311 facing away from the electromagnetic channel 1311a, and the first conductive terminal 133 is in conductive contact with the second conductive terminal 1312 to conduct the first electromagnetic coil 131. At least a partial region of the first magnetic attraction member 132 is located in the electromagnetic channel 1311a in a state where the first magnetic attraction member 132 is in magnetic attraction engagement with the first electromagnetic coil 131.

That is, the ring body 1311 is a body of the first electromagnetic coil 131 generating a magnetic field, and the second conductive terminal 1312 may be disposed at an outer side of the ring body 1311 in a radial direction, and the first conductive terminal 133 may be in conductive contact with the second conductive terminal 1312 at the outer side of the ring body 1311 in the radial direction to conduct the first electromagnetic coil 131. Meanwhile, in a state where the first magnetic attraction member 132 is in magnetic attraction engagement with the first electromagnetic coil 131, at least a partial region of the first magnetic attraction member 132 is located in the electromagnetic channel 1311a to achieve magnetic attraction engagement with the coil body 1311.

The first conductive terminal 133 shown in fig. 6 is in conductive contact with the second conductive terminal 1312 on a side of the second conductive terminal 1312 facing away from the ring 1311, and in other embodiments, the first conductive terminal 133 may also be in conductive contact with the second conductive terminal 1312 on a side of the second conductive terminal 1312 along the circumferential direction of the ring 1311.

Referring to fig. 6, for the electromagnetic steering assist mechanism 13 provided with the first sleeve 135, the first sleeve 135 may be provided with a relief port (not shown) that avoids the second conductive terminal 1312.

In order to facilitate the first conductive terminal 133 to conduct the first electromagnetic coil 131, referring to fig. 1 and 6, the electromagnetic steering assist mechanism 13 may be provided with a supporting frame 134, where the supporting frame 134 includes a frame body 1341 and a supporting rod 1342, the frame body 1341 is connected with the steering rod 113 and is located at one side of the first magnetic attraction member 132 along the axial direction of the steering rod 113, the supporting rod 1342 is disposed on the frame body 1341 and extends towards the direction where the first magnetic attraction member 132 is located, and the first conductive terminal 133 is disposed at one end of the supporting rod 1342 near the first magnetic attraction member 132.

That is, the support rod 1342 is provided at a distance from the steering rod 113, and the support bracket 134 moves together with the steering rod 113 during the axial movement of the steering rod 113, so that the first conductive terminal 133 can be in conductive contact with the second conductive terminal 1312.

In one embodiment, referring to fig. 1, the automotive steering assist device 10 may be provided with a plurality of electromagnetic steering assist mechanisms 13, and when the steering rod 113 moves along the axial direction toward the first direction X1, a first conductive terminal 133 of a portion of the electromagnetic steering assist mechanisms 13 conducts the corresponding first electromagnetic coil 131. When the steering lever 113 moves in the axial direction toward the second direction X2, the first conductive terminal 133 of the other portion of the electromagnetic steering assist mechanism 13 turns on the corresponding first electromagnetic coil 131. That is, when the steering rod 113 moves in the first direction X1 in the axial direction, the electromagnetic driving force is applied to the steering rod 113 by a part of the electromagnetic steering assist mechanism 13, and when the steering rod 113 moves in the second direction X2 in the axial direction, the electromagnetic driving force is applied to the steering rod 113 by another part of the electromagnetic steering assist mechanism 13, or when the steering rod 113 moves in the first direction X1 or the second direction X2 in the axial direction, the corresponding electromagnetic steering assist mechanism 13 is different.

For example, referring to fig. 1, two electromagnetic steering assist mechanisms 13 are provided in fig. 1, and for convenience of description, the two electromagnetic steering assist mechanisms 13 are referred to as a first steering assist mechanism 13a and a second steering assist mechanism 13b, respectively.

Referring to fig. 1, when the steering rod 113 moves in the first direction X1 in the axial direction, the first conductive terminal 133 of the first steering assist mechanism 13a conducts the corresponding first electromagnetic coil 131, the first steering assist mechanism 13a applies an electromagnetic driving force to the steering rod 113 in the first direction X1 in the axial direction, and the first conductive terminal 133 of the second steering assist mechanism 13b is separated from the corresponding first electromagnetic coil 131, i.e., the first electromagnetic coil 131 of the second steering assist mechanism 13b is not energized, and the second steering assist mechanism 13b does not provide the electromagnetic driving force.

Similarly, referring to fig. 1, when the steering rod 113 moves in the axial direction toward the second direction X2, the first conductive terminal 133 of the second steering assist mechanism 13b turns on the corresponding first electromagnetic coil 131, the second steering assist mechanism 13b applies an electromagnetic driving force in the axial direction toward the second direction X2 to the steering rod 113, and the first conductive terminal 133 of the first steering assist mechanism 13a is separated from the corresponding first electromagnetic coil 131, i.e., the first electromagnetic coil 131 of the first steering assist mechanism 13a is not energized, and the first steering assist mechanism 13a does not provide the electromagnetic driving force.

It should be noted that the number of the electromagnetic steering assist mechanisms 13 is not limited to two, and in other embodiments, the number of the electromagnetic steering assist mechanisms 13 may be greater than two.

With continued reference to fig. 1, in order to keep the steering rod 113 substantially in a force balance at the opposite sides of the transmission shaft 112, the opposite sides of the transmission shaft 112 may be respectively provided with at least one electromagnetic steering assist mechanism 13.

In other embodiments, all electromagnetic steering assist mechanisms 13 may be disposed on the same side of the drive shaft 112.

In an embodiment, referring to fig. 8, the electromagnetic steering assistance mechanism 13 may also include two first magnetic attraction pieces 132 and two first conductive terminals 133, where the two first magnetic attraction pieces 132 are disposed at intervals along the axial direction of the steering rod 113, and in an initial state of the steering rod 113, the two first magnetic attraction pieces 132 are respectively located at two opposite sides of the first electromagnetic coil 131 along the axial direction of the steering rod 113, and the first conductive terminals 133 are in one-to-one correspondence with the first magnetic attraction pieces 132. The two first conductive terminals 133 selectively conduct the first electromagnetic coil 131, so that the first electromagnetic coil 131 changes the magnetic field direction and is magnetically attracted and matched with the corresponding first magnetic attraction piece 132.

That is, the first electromagnetic coil 131 may also keep the direction of the electromagnetic driving force applied to the steering rod 113 by the first electromagnetic coil 131 and the corresponding first magnetic attraction member 132 in agreement with the movement direction of the steering rod 113 by changing the magnetic field direction.

Specifically, since the magnetic field direction of the first solenoid 131 can be changed by changing the direction of the current, two first magnetic attraction pieces 132 and two first conductive terminals 133 can be provided, one of which first conductive terminals 133 gradually approaches the first solenoid 131 and the other of which first conductive terminals 133 gradually gets away from the first solenoid 131 when the steering lever 113 moves in the first direction X1 in the axial direction, and when the first conductive terminal 133 gradually approaches the first solenoid 131 conducts the first solenoid 131, the magnetic field direction of the first solenoid 131 faces the first direction X1 while the first magnetic attraction piece 132 on the same side as the first conductive terminal 133 that conducts the first solenoid 131 magnetically attracts the first solenoid 131 to apply an electromagnetic driving force to the steering lever 113 toward the first direction X1. Similarly, when the steering rod 113 moves in the second direction X2 in the axial direction, one of the first conductive terminals 133 (i.e., the first conductive terminal 133 gradually moving away from the first solenoid 131 when the steering rod 113 moves in the first direction X1 in the axial direction) gradually approaches the first solenoid 131, and the other first conductive terminal 133 (i.e., the first conductive terminal 133 gradually moving closer to the first solenoid 131 when the steering rod 113 moves in the first direction X1 in the axial direction) gradually moves away from the first solenoid 131, when the first conductive terminal 133 gradually moving closer to the first solenoid 131 turns on the first solenoid 131, the current flowing through the first solenoid 131 is opposite to the current flowing through the first solenoid 131 when the steering rod 113 moves in the first direction X1 in the axial direction, the magnetic field direction of the first solenoid 131 changes toward the second direction X2, and at the same time, the first magnetic attraction member 132 on the same side as the first conductive terminal 133 of the first solenoid 131 magnetically attracts the first solenoid 131 to magnetically attract the first solenoid 131 to the first solenoid 131, so that the first magnetic attraction member 113 can be attracted to the first magnetic force to the first solenoid 131 to the second magnetic force the first solenoid 131 to the first magnetic force the first magnetic member 113 in the opposite to the first direction X1, thereby keeping the direction of the first magnetic attraction member 113 moving in correspondence to the first direction.

For the electromagnetic steering assist mechanism 13 that provides the electromagnetic driving force by changing the magnetic field direction of the first electromagnetic coil 131, the number of electromagnetic steering assist mechanisms 13 may be one or plural, and when the number of electromagnetic steering assist mechanisms 13 is plural, all the electromagnetic steering assist mechanisms 13 may apply the electromagnetic driving force to the steering rod 113 regardless of whether the steering rod 113 moves in the first direction X1 or the second direction X2 in the axial direction.

The specific structure of the electromagnetic driver 123 is not limited as long as it can generate an electromagnetic driving force for driving the second transmission member 122 to move after being energized. For example, referring to fig. 4, in an embodiment, the electromagnetic driver 123 may include a second electromagnetic coil 1231 and a second magnetic attraction member 1232, the second transmission member 122 is movably disposed in the second electromagnetic coil 1231, the second magnetic attraction member 1232 is disposed on the second transmission member 122, and at least a part of a region of the second magnetic attraction member 1232 is located in the second electromagnetic coil 1231, when the steering wheel 111 triggers the triggering device 114 through rotation, the second electromagnetic coil 1231 is energized and magnetically attracted to cooperate with the second magnetic attraction member 1232 to drive the second transmission member 122 to move.

That is, the second magnetic attraction member 1232 may be located in only a partial area of the second magnetic coil 1231, or may be located in the entire area of the second magnetic coil 1231, and the second magnetic coil 1231 generates a magnetic field after being energized, and the second magnetic coil 1231 magnetically attracts and cooperates with the second magnetic attraction member 1232 by using the magnetic field.

Referring to fig. 1 and 4, the electromagnetic driver 123 may be provided with a second sleeve 1233, and the second electromagnetic coil 1231 may be fixed inside the second sleeve 1233.

Referring to fig. 1, for a vehicle steering assist device 10 having a frame 14, a second solenoid 1231 may be directly or indirectly fixed to the frame 14, e.g., for an electromagnetic drive 123 having a second sleeve 1233, the second sleeve 1233 may be fixedly connected to the frame 14.

In other embodiments, the second electromagnetic coil 1231 may be directly or indirectly secured to other components of the automobile.

Referring to fig. 4, the number of the second solenoids 1231 may be plural, each second solenoid 1231 is arranged along the moving direction of the second transmission member 122, and when the steering wheel 111 triggers the triggering device 114 through rotation, all the second solenoids 1231 are energized. That is, the second magnetic attraction member 1232 can cooperate with the corresponding second electromagnetic coil 1231 during the movement along with the second transmission member 122, so that the duration of the electromagnetic driving force of the electromagnetic driver 123 can be prolonged, and the rotation process of the transmission shaft lever 112 can be more labor-saving.

With continued reference to fig. 1, the steering assist device 10 may be provided with two electromagnetic drivers 123, where the two electromagnetic drivers 123 are respectively located on opposite sides of the transmission shaft 112, and the second magnetic attraction members 1232 of the electromagnetic drivers 123 are respectively disposed on the second transmission member 122.

When the steering wheel 111 rotates in the first rotation direction and triggers the triggering device 114, the second electromagnetic coil 1231 of one of the electromagnetic drivers 123 is energized to drive the second transmission member 122 to move in the first direction X1. When the steering wheel 111 rotates in a second rotational direction opposite to the first rotational direction and triggers the triggering device 114, the second electromagnetic coil 1231 of the other electromagnetic driver 123 is energized to drive the second transmission member 122 to move in a second direction X2 opposite to the first direction X1.

That is, when the steering wheel 111 rotates in the first rotation direction, the two electromagnetic drivers 123 are respectively corresponding to the first rotation direction and the second rotation direction of the steering wheel 111, and the second electromagnetic coil 1231 of the electromagnetic driver 123 corresponding to the first rotation direction is energized and magnetically engaged with the corresponding second magnetic attraction member 1232 to drive the second transmission member 122 to move in the first direction X1, so that the first transmission member 121 can drive the transmission shaft 112 to rotate in the first rotation direction. When the steering wheel 111 rotates in the second rotation direction, the second electromagnetic coil 1231 of the electromagnetic driver 123 corresponding to the second rotation direction is energized and magnetically engaged with the corresponding second magnetic member 1232 to drive the second transmission member 122 to move in the second direction X2, so that the first transmission member 121 can drive the transmission shaft 112 to rotate in the second rotation direction.

Two electromagnetic drives 123 are provided to facilitate control of the movement of the second transmission member 122.

In other embodiments, the second electromagnetic coil 1231 may also change the direction of the magnetic field to change the direction of movement of the second transmission member 122, so that the direction of rotation of the first transmission member 121 to rotate the transmission shaft 112 is consistent with the direction of rotation of the steering wheel 111. That is, the direction of the magnetic field of the second electromagnetic coil 1231 can be changed by changing the direction of the current, and thus the direction of movement of the second transmission member 122 can be changed, and after the direction of movement of the second transmission member 122 is changed, the direction of movement of the first transmission member 121 is also changed accordingly, so that the direction of rotation of the transmission shaft 112 can be kept consistent with the direction of rotation of the steering wheel 111. For this, the number of electromagnetic drivers 123 may be one or a plurality.

In an embodiment, referring to fig. 7, the wheel assembly 20 further includes a mounting seat 22 having a sliding hole 22a, the wheel 21 is rotatably connected with the mounting seat 22, the steering assist device 10 of the automobile includes two first sliding bars 15 and two first springs 16, the two first sliding bars 15 are respectively disposed at opposite ends of the steering bar 113, each first sliding bar 15 extends along the height direction of the automobile and movably passes through the sliding hole 22a of the corresponding mounting seat 22, and each first spring 16 is respectively sleeved on the corresponding first sliding bar 15 and abuts against the corresponding first sliding bar 15 and the corresponding mounting seat 22, so that not only can the movement of the wheel 21 be better adapted during the running process of the automobile, but also the damping effect can be achieved.

In an embodiment, referring to fig. 7, the automobile steering assist device 10 may further include two second sliding rods 17 and two second springs 18, the mounting seat 22 includes a shaft hole, the two second sliding rods 17 are respectively connected with the frame 14 and extend along the height direction of the automobile, each second sliding rod 17 movably passes through the shaft hole of the corresponding mounting seat 22, and each second spring 18 is respectively sleeved on the corresponding second sliding rod 17 and is abutted to the frame 14 and the corresponding mounting seat 22, so that the automobile steering assist device can also adapt to the movement of the wheels 21 and has a better damping effect.

In the description of the present application, reference to the term "one embodiment," "in some embodiments," "in other embodiments," "in yet other embodiments," or "exemplary" etc., means 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 application. In the present application, the schematic representations of the above terms are not necessarily for 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. Furthermore, the various embodiments or examples described in the present application and the features of the various embodiments or examples may be combined by those skilled in the art without contradiction.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims

1. An automotive steering assist apparatus, comprising:

2. The automotive steering assist device of claim 1, wherein the steering rod is movable in a first direction or a second direction opposite to the first direction in an axial direction;

3. A steering assist device for a vehicle as claimed in claim 1 or 2, wherein at least one of said electromagnetic steering assist mechanisms is provided on opposite sides of said drive shaft.

4. The power steering apparatus according to claim 1 or 2, wherein the number of the first electromagnetic coils is plural, each of the first electromagnetic coils is arranged in an axial direction of the steering rod, and the transmission shaft rod causes the first conductive terminal to conduct one of the first electromagnetic coils by driving the steering rod to move in the axial direction during rotation.

5. The automotive steering assist device according to claim 1 or 2, characterized in that the first electromagnetic coil includes a coil body having an electromagnetic passage in which the steering rod is movably penetrated, and a second conductive terminal provided on a side of the coil body facing away from the electromagnetic passage, the first conductive terminal being in conductive contact with the second conductive terminal to conduct the first electromagnetic coil; and in a state that the first magnetic attraction piece is in magnetic attraction fit with the first electromagnetic coil, at least part of the area of the first magnetic attraction piece is positioned in the electromagnetic channel.

6. The power steering apparatus according to claim 5, wherein the electromagnetic power steering mechanism includes a support frame including a frame body and a support rod, the frame body being connected to the steering rod and being located at one side of the first magnetic member in the axial direction of the steering rod, the support rod being provided on the frame body and extending in a direction in which the first magnetic member is located, the first conductive terminal being provided at one end of the support rod near the first magnetic member.

7. The vehicle steering assist device of claim 5 wherein the electromagnetic steering assist mechanism comprises a first sleeve having a relief opening, the first electromagnetic coil being disposed within the first sleeve, the relief opening being clear of the second conductive terminal.

8. The power steering apparatus according to claim 1 or 2, wherein the first magnetic member is annular, and the first magnetic member is sleeved on the outer surface of the steering rod.

9. The power steering device according to claim 1 or 2, wherein the electromagnetic driver comprises a second electromagnetic coil and a second magnetic attraction piece, the second transmission piece is movably arranged in the second electromagnetic coil in a penetrating way, the second magnetic attraction piece is arranged on the second transmission piece, at least part of the second magnetic attraction piece is located in the second electromagnetic coil, and when the steering wheel triggers the triggering device through rotation, the second electromagnetic coil is electrified and is in magnetic attraction fit with the second magnetic attraction piece so as to drive the second transmission piece to move.

10. The power steering apparatus according to claim 9, wherein the number of the electromagnetic drivers is two, the two electromagnetic drivers are respectively located at opposite sides of the transmission shaft, and the second magnetic attraction pieces of the electromagnetic drivers are respectively provided on the second transmission pieces;

11. The power steering apparatus according to claim 9, wherein the second electromagnetic coil changes the direction of movement of the second transmission member by changing the direction of the magnetic field so that the direction of rotation of the first transmission member by which the transmission shaft is rotated is kept identical to the direction of rotation of the steering wheel.

12. The power steering apparatus according to claim 9, wherein the number of the second solenoids is plural, each of the second solenoids is aligned in a direction of movement of the second transmission member, and when the steering wheel is rotated to trigger the triggering device, all of the second solenoids are energized.

13. The automotive steering assist assembly of claim 9 wherein the electromagnetic drive includes a second sleeve, the second electromagnetic coil being disposed within the second sleeve.

14. The power steering device according to claim 1 or 2, wherein the triggering device comprises a mounting body, a first triggering piece and two second triggering pieces arranged on the mounting body, wherein the first triggering piece is arranged on the steering wheel or the transmission shaft lever, the two second triggering pieces are arranged at intervals along the rotation direction of the steering wheel, and when the steering wheel is in an initial position, the two second triggering pieces are respectively positioned on two opposite sides of the first triggering piece along the rotation direction of the steering wheel; the steering wheel causes the first trigger member to trigger one of the two second trigger members by rotating relative to the mounting body.

15. The vehicle steering assist device of claim 14 wherein the mounting body has a mounting hole, the drive shaft includes a first shaft fixedly coupled to the steering wheel, the first shaft rotatably disposed through the mounting hole, and the first trigger is disposed on the first shaft.

16. The automotive steering assist device according to claim 1 or 2, characterized in that the transmission shaft comprises a first shaft fixedly connected to the steering wheel and a second shaft rotatably connected to the first shaft, the second transmission member being provided on the second shaft;

17. The automotive steering assist device according to claim 1 or 2, characterized in that the first transmission member is a first gear, and the second transmission member is a first rack gear meshed with the first gear; and/or the number of the groups of groups,

18. An automobile, comprising wheel assemblies and an automobile steering assist device as claimed in any one of claims 1 to 17, wherein the wheel assemblies are respectively arranged at opposite ends of the steering rod, and each wheel assembly is respectively and movably connected with the steering rod.

19. The vehicle of claim 18, wherein the wheel assembly comprises a wheel and a mounting seat having a slide hole, the wheel is rotatably connected with the mounting seat, the vehicle steering assist device comprises two first slide bars and two first springs, the two first slide bars are respectively disposed at opposite ends of the steering bar, each first slide bar extends in a height direction of the vehicle and movably penetrates the slide hole of the corresponding mounting seat, and each first spring is respectively sleeved on the corresponding first slide bar and is abutted with the corresponding first slide bar and the corresponding mounting seat.

20. The vehicle of claim 18, wherein the vehicle steering assist device comprises a frame, two second slide bars, and two second springs, the mounting base has a shaft hole, the two second slide bars are respectively connected with the frame and extend along the height direction of the vehicle, each second slide bar movably passes through the shaft hole of the corresponding mounting base, and each second spring is respectively sleeved on the corresponding second slide bar and is abutted with the frame and the corresponding mounting base.