CN115593503A - Steering power assisting device and steering method - Google Patents

Abstract

The invention provides a power steering device and a power steering method, belonging to the field of vehicle manufacturing, wherein the power steering device comprises: the front steering assembly, the front driving assembly, the rear steering assembly and the rear driving assembly; the front driving assembly is connected with the front steering assembly and used for driving the front steering assembly to move so as to enable a front tire of the automobile connected with the front steering assembly to rotate; the rear driving assembly is connected with the rear steering assembly and is used for driving the rear steering assembly to move so as to rotate a rear tire of the automobile connected with the rear steering assembly; the front driving assembly and the rear driving assembly are respectively electrically connected with an electronic controller of the automobile, and the electronic controller is used for receiving driving signals; the driving signal is a driving signal sent by a main controller of the automobile based on a preset mode of the vehicle-mounted terminal. The technical problem of in the prior art, can't be compatible two-wheel steering and four-wheel steering simultaneously in same vehicle is solved.

Description

Steering power assisting device and steering method

Technical Field

The invention relates to the field of vehicle manufacturing, in particular to a power steering device and a power steering method.

Background

A steering system of a vehicle is a series of devices for changing or maintaining the driving or reversing direction of the vehicle, and functions to control the driving direction of the vehicle as intended by a driver.

Steering is inevitable during the driving process of the automobile. In order to realize the steering of the automobile, in the prior art, a pure electric automobile is driven by a two-wheel hub motor, namely, two front wheels are utilized for steering, so that the electric control is simple, and the energy consumption is saved.

With the development of the times, some four-wheel steering electric automobiles gradually appear, namely, the wheels of the automobiles can realize four-wheel ground gripping, so that the friction force between the wheels and the ground is uniform, the slippage of the automobile body is reduced, and the stability of the automobiles is improved.

However, in the prior art, it is not possible to simultaneously accommodate two-wheel steering and four-wheel steering in the same vehicle.

The present invention has been made in view of the above circumstances.

Disclosure of Invention

The invention provides a power steering device and a power steering method, which aim to solve the technical problem that two-wheel steering and four-wheel steering cannot be simultaneously compatible in the same vehicle in the prior art.

According to a first aspect of the present invention, there is provided a steering assist device, the device including: the steering mechanism comprises a front steering assembly, a front driving assembly, a rear steering assembly and a rear driving assembly; the front driving assembly is connected with the front steering assembly and used for driving the front steering assembly to move so as to enable a front tire of the automobile connected with the front steering assembly to rotate; the rear driving assembly is connected with the rear steering assembly and is used for driving the rear steering assembly to move so as to rotate a rear tire of the automobile connected with the rear steering assembly; the front driving assembly and the rear driving assembly are respectively electrically connected with an electronic controller of the automobile, and the electronic controller is used for receiving driving signals; the driving signal is a driving signal sent by a main controller of the automobile based on a preset mode of the vehicle-mounted terminal; the front steering assembly can obtain a rear steering assembly through rotation and translation; the front drive assembly can be configured to rotate and translate to obtain the rear drive assembly.

Specifically, in the present application, the power steering device includes a front steering assembly, a front driving assembly, a rear steering assembly, and a rear driving assembly. Wherein, preceding subassembly that turns to can obtain the back through rotational translation and turn to the subassembly, and preceding drive assembly can obtain the back drive assembly through rotational translation, turns to the subassembly the same after with preceding subassembly that turns to promptly, and preceding drive assembly is the same after with. By such an arrangement, the cost of the mold can be reduced.

In addition, the front drive assembly is connected to the front steering assembly, which is connected to the front tires of the vehicle. Wherein, preceding drive assembly can drive preceding steering assembly and move to the tire rotates before the drive. The rear driving assembly is connected with the rear steering assembly, and the rear steering assembly is connected with a rear tire of the automobile. Wherein, the rear drive assembly can drive the rear steering assembly to move, thereby driving the rear tire to rotate. By means of the arrangement, the vehicle can be compatible with four-wheel drive and two-wheel drive architectures.

In addition, the front driving assembly and the rear driving assembly are respectively and electrically connected with an electronic controller of the automobile, the electronic controller is electrically connected with the main controller, and the main controller sends driving signals to the electronic controller according to a preset mode of the vehicle-mounted terminal. The preset mode may be a two-wheel drive steering mode and a four-wheel drive steering mode. When the driver selects the preset mode to be two-wheel drive steering, the vehicle-mounted terminal receives a two-wheel drive steering command and sends the two-wheel drive steering command to the electronic controller, so that the vehicle front drive assembly or the vehicle rear drive assembly is controlled to operate, and the vehicle front drive assembly or the vehicle rear drive assembly is controlled to perform power transmission. The technical problem of in the prior art, can't be compatible two-wheel steering and four-wheel steering simultaneously in same vehicle is solved.

In an alternative embodiment, the two wheel drive steering mode may include a front wheel drive steering mode and a rear wheel drive steering mode.

Optionally, the vehicle-mounted terminal can be a vehicle-mounted large screen, a vehicle-mounted central control screen and an integrated triple screen.

Optionally, the front drive assembly may be an R-EPS steer-by-wire machine.

Preferably, the front steering assembly includes: two steering knuckles; two ends of the driving component are respectively connected with the steering knuckle; the two steering knuckles are respectively connected with front tires of different automobiles.

The front steering assembly comprises two steering knuckles, one is arranged on the left side of the front tire of the automobile and the other is arranged on the right side of the front automobile tire, and the two steering knuckles are respectively connected with the front tire of the automobile. The two ends of the driving assembly are respectively connected with the steering knuckle, and the driving assembly can move to drive the steering knuckle to rotate so as to drive the tire of the automobile to rotate.

In an alternative embodiment, the direction of rotation of the tires of the vehicle may be different depending on the direction of movement of the drive assembly, such as: when the driving component moves leftwards, the front tire can be driven to move rightwards. For another example: when the driving assembly moves rightwards, the front tire can be driven to move leftwards.

Preferably, the front drive assembly comprises: a power steering motor, a steering housing and a steering member; the steering component is arranged in the steering engine shell, and two ends of the steering component protrude out of the steering engine shell; the steering component protrudes out of the two ends of the steering engine shell and is respectively connected with the steering knuckle; the power-assisted steering motor is detachably connected to the steering engine shell and used for driving the steering component to move; the power steering motor is electrically connected with the electronic controller.

The front drive assembly includes: a steering assist motor, a steering housing, and a steering member. The steering component is arranged in the steering engine shell, two ends of the steering component protrude out of the steering engine shell, and two ends of the steering component are respectively connected with different steering knuckles, so that linkage between the two steering knuckles can be realized.

In addition, the power steering motor is detachably connected to the steering knuckle shell, can drive the steering component to move, and is electrically connected with the electronic controller, and the electronic controller can receive a driving signal sent by the main controller, so that the power steering motor is driven to move the steering component. Wherein, the power-assisted steering motor receives a driving signal and controls the steering component to move.

In an alternative embodiment, the steering housing is fixedly provided with a first bulge, a second bulge and a third bulge, the first bulge and the second bulge are detachably connected with two automobile body longitudinal beam mounting plates, and the third bulge is detachably connected with an automobile body cross beam mounting plate.

Preferably, a transmission gear is arranged in the position where the power steering motor is detachably connected with the steering engine shell; a transmission rack meshed with the transmission gear is arranged on the steering component; the steering component is connected with the transmission gear through the transmission rack.

A transmission gear is arranged in a position where the power steering motor is detachably connected with the power steering shell, a transmission rack is arranged on the steering component, the transmission component is used as an object driven by the power steering motor and is meshed with the transmission gear through the transmission rack, namely, the transmission gear rotates to drive the transmission rack meshed with the transmission gear to move, and meanwhile, the transmission gear can drive the steering component to move, so that a steering knuckle is driven to rotate. Therefore, the movement of the transmission rack can drive the steering component which is only provided with the transmission rack to move. This arrangement makes the steering member move more smoothly.

Preferably, the steering assist motor includes: a control unit; and a connecting part integrally formed with the control part; the transmission gear is arranged in the connecting part; the control part is electrically connected with an electronic controller of the automobile and used for driving the transmission gear to move.

The power steering motor comprises a control part and a connecting part, wherein the control part and the connecting part are integrally formed. The transmission gear is arranged in the connecting portion, the control portion is electrically connected with an electronic controller of an automobile and drives the transmission gear to move, and when the control portion receives a driving signal of the main controller, the transmission gear in the connecting portion is controlled to rotate so as to drive the transmission rack to move. The arrangement mode can more effectively realize the transmission effect.

In an alternative embodiment, the steering gear housing is further provided with a rotating part, the rotating part is connected with the control part through a high-voltage wire harness, a steering gear is arranged in the rotating control part, a steering rack meshed with the steering gear is arranged on the steering part, and a rotating torque sensor is further arranged in the rotating control part and used for detecting the torque of the steering gear. When the torque reaches a certain amount, the steering gear stops rotating.

In an optional embodiment, a steering column is further connected to the steering gear, the steering column is connected to a steering wheel of the automobile, and a steering angle sensor is arranged on the steering wheel and used for detecting the rotation angle of the steering wheel. When a steering wheel is controlled, a steering angle sensor generates corresponding electric signals according to torque and a turning angle on a steering column, and a control part controls the rotation direction of a transmission gear and controls a rotating gear to realize power-assisted steering according to the electric signals and a vehicle speed signal detected by a vehicle speed sensor of an automobile.

Preferably, the steering member includes: the steering pull rod, the pull rod joint and the locking nut; the steering pull rod is arranged in the steering engine shell, and two ends of the steering pull rod protrude out of the steering engine shell; the transmission rack is arranged on the steering pull rod; the two ends of the steering pull rod protruding out of the steering shell are respectively detachably connected with the pull rod joint through locking nuts; the tie rod joint is connected with the steering knuckle.

The steering component comprises a steering pull rod, a pull rod joint and a locking nut. Two ends of the steering pull rod are respectively connected with a pull rod joint, and the pull rod joint is connected with the steering knuckle. The steering tie rod is horizontally arranged, and the steering tie rod can horizontally move leftwards or rightwards through mutual transmission between the transmission rack and the transmission gear, so that the steering knuckle is driven to rotate.

Preferably, the tie-rod joints are ball pins.

The main function of the ball stud is to realize up-and-down jumping and steering movement of the wheel, the ball stud is provided with a joint, and the joint is connected with the knuckle in a ball hinge manner, so that the stability of connection between the knuckle and the joint can be ensured.

Preferably, the dust-proof sleeve is further included; one end of the dustproof sleeve is sleeved on the steering engine shell, and the other end of the dustproof sleeve is sleeved on the steering pull rod.

Two parts of the knuckle pull rod protruding out of the steering engine shell are respectively provided with a dustproof sleeve, one end of the dustproof sleeve is sleeved on the steering engine shell, and the other end of the dustproof sleeve is sleeved on the steering pull rod. Since the tie rod needs to be driven to rotate the wheels, if a large amount of dust enters the tie rod, the tie rod cannot move, and personal safety of a driver or a passenger is damaged. Therefore, by means of the dustproof sleeve, dust can be prevented from entering the dustproof sleeve, and accordingly safety of personnel is guaranteed.

Preferably, the ball stud is sleeved with a bushing.

The lining has the advantages of reducing the abrasion, vibration and noise of the equipment and preventing corrosion. Therefore, the ball stud is sleeved with the bushing, so that the sealing effect of the ball stud can be ensured, and meanwhile, the abrasion of the ball stud in the rotating process can be reduced.

According to a second aspect of the present invention, there is provided a steering method, the method comprising: generating a driving signal under the condition of receiving a preset mode sent by a vehicle-mounted terminal; sending a drive signal to an electronic controller of the vehicle to cause the electronic controller to drive the front drive assembly and/or the rear drive assembly; the front driving assembly drives the front steering assembly to rotate so as to rotate a front tire of the automobile connected with the front steering assembly; and/or the rear driving assembly drives the rear steering assembly to rotate so as to enable a rear tire of the automobile connected with the rear steering assembly to rotate, and the front steering assembly can obtain the rear steering assembly through rotary translation; the front driving assembly can obtain a rear driving assembly through rotation and translation, the front driving assembly is connected with the front steering assembly, the rear driving assembly is connected with the rear steering assembly, and the front driving assembly and the rear driving assembly are respectively electrically connected with the electronic controller.

Specifically, in the present application, a main controller of an automobile may be used as an execution subject of the present application. The method includes the steps that a communication relation is established between a main controller and an electronic controller, the main controller receives a driving signal which is sent by a vehicle-mounted terminal and based on a preset mode of the vehicle-mounted terminal, it needs to be noted that the preset mode can be a two-wheel drive steering mode and a four-wheel drive steering mode, and the preset mode can be a mode determined by a driver. The electronic controller receives the driving signal and controls the front driving assembly and/or the rear driving assembly to move through the driving signal, wherein the front driving assembly drives the front steering assembly to rotate so as to enable a front tire of the automobile connected with the front steering assembly to rotate; the rear driving assembly drives the rear steering assembly to rotate so as to rotate a rear tire of the automobile connected with the rear steering assembly. Such as: when the received driving signal is used for controlling only the front wheels to steer, the electronic controller only needs to control the front driving component so as to enable the front steering component connected with the front driving component to rotate, and therefore the front wheels are driven to rotate.

In summary, the power steering device is respectively arranged at the front part and the rear part of the vehicle, and is respectively connected with the front wheels and the rear wheels of the vehicle, and the steering mode (two-wheel steering and/or four-wheel steering) selected by the driver can be realized through the preset mode of the main controller, the electronic controller and the vehicle-mounted terminal. The technical problem that two-wheel steering and four-wheel steering cannot be compatible simultaneously in the same vehicle in the prior art is solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural view of a power steering apparatus according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a power steering apparatus according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a power steering apparatus according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a power steering apparatus coupled to a cross member and a side member of a vehicle according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a steering assist device according to an embodiment of the present invention; and

fig. 6 is a schematic diagram of a steering method according to the present invention.

In the above figures, the list of parts represented by the various reference numerals is as follows:

1. a front drive assembly; 2. a rear drive assembly; 3. a front steering assembly;

101. a steering assist motor; 102. a steering housing; 103. a steering member;

1011. a control unit; 1012. a connecting portion;

1031. a steering tie rod;

201. a dust-proof sleeve;

301. a ball stud; 302. a protruding portion; 303. a bushing; 304. a knuckle;

401. a first boss; 402. a second boss portion; 403. a third boss portion;

501. a beam mounting plate; 502. a longitudinal beam mounting plate;

601. a first ball keyway; 602. a second ball pin seat.

Detailed Description

In order to make the above and other features and advantages of the present invention more apparent, the present invention is further described below with reference to the accompanying drawings. It is understood that the specific embodiments described herein are for purposes of illustration only and are not intended to be limiting.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Referring to fig. 1 to 5, in an embodiment of the power steering apparatus provided by the present invention, the apparatus includes: the steering mechanism comprises a front steering component 3, a front driving component 1, a rear steering component and a rear driving component 2; the front driving assembly 1 is connected with the front steering assembly 3 and is used for driving the front steering assembly 3 to move so as to enable a front tire of an automobile connected with the front steering assembly 3 to rotate; the rear driving assembly 2 is connected with the rear steering assembly and is used for driving the rear steering assembly to move so as to rotate the rear tire of the automobile connected with the rear steering assembly; the front driving component 1 and the rear driving component 2 are respectively and electrically connected with an electronic controller of the automobile, and the electronic controller is used for receiving driving signals; the driving signal is a driving signal sent by a main controller of the automobile based on a preset mode of the vehicle-mounted terminal; the front steering assembly 3 can obtain a rear steering assembly through rotation and translation; the front drive assembly 1 is able to obtain the rear drive assembly 2 by means of rototranslation.

Preferred embodiments of the present invention may be a combination of any one or more of the following in combination with the above embodiments;

the front steering assembly 3 includes: two steering knuckles 304; two ends of the driving component are respectively connected with the steering knuckle 304; the two steering knuckles 304 are respectively connected with front tires of different automobiles;

the front drive assembly 1 includes: a steering assist motor 101, a steering housing 102, and a steering member 103; the steering component 103 is arranged in the steering housing 102, and two ends of the steering component protrude out of the steering housing 102; the two ends of the steering component 103 protruding out of the steering housing 102 are respectively connected with the steering knuckle 304; the power steering motor 101 is detachably connected to the steering housing 102 and is used for driving the steering component 103 to move; the power steering motor 101 is electrically connected with the electronic controller;

a transmission gear is arranged in the position where the power steering motor 101 is detachably connected with the steering housing 102; a transmission rack meshed with the transmission gear is arranged on the steering component 103; the steering component 103 is connected with the transmission gear through a transmission rack;

the steering assist motor 101 includes: a control unit 1011; and a connecting portion 1012 integrally formed with the control portion 1011; the transmission gear is disposed in the connecting portion 1012; the control part 1011 is electrically connected with a main controller of the automobile and used for driving the transmission gear to move;

the steering member 103 includes: a steering tie bar 1031, tie bar joints, and lock nuts; the steering rod 1031 is arranged in the steering housing 102, and two ends of the steering rod 1031 protrude out of the steering housing 102; the transmission rack is arranged on the steering tie bar 1031; the two ends of the steering tie bar 1031 protruding out of the steering housing 102 are detachably connected with tie bar joints through lock nuts respectively; the tie rod joint is connected with the knuckle 304;

the tie-rod joint is a ball stud 301;

also comprises a dustproof sleeve 201; one end of the dustproof sleeve 201 is sleeved on the steering housing 102, and the other end is sleeved on the steering pull rod 1031;

a bushing 303 is sleeved on the ball stud 301.

Referring to fig. 1-6, in another embodiment of the present invention, a steering method is provided, the method comprising: generating a driving signal under the condition of receiving a preset mode sent by a vehicle-mounted terminal; sending a driving signal to an electronic controller of the automobile so that the electronic controller drives the front driving assembly 1 and/or the rear driving assembly 2; wherein, the front driving assembly 1 drives the front steering assembly 3 to rotate so as to rotate the front tire of the automobile connected with the front steering assembly 3; and/or the rear driving component 2 drives the rear steering component to rotate so as to enable a rear tire of the automobile connected with the rear steering component to rotate, and the front steering component 3 can obtain the rear steering component through rotating and translating; the front driving assembly 1 can obtain a rear driving assembly 2 through rotating and translating, the front driving assembly 1 is connected with the front steering assembly 3, the rear driving assembly 2 is connected with the rear steering assembly, and the front driving assembly 1 and the rear driving assembly 2 are respectively electrically connected with the electronic controller.

In one embodiment of the gripping device provided by the invention, the power steering device comprises a front steering assembly 3, a front driving assembly 1, a rear steering assembly and a rear driving assembly 2. The front steering assembly 3 can obtain a rear steering assembly through rotational translation, the front driving assembly 1 can obtain a rear driving assembly 2 through rotational translation, namely the front steering assembly 3 is the same as the rear steering assembly, and the front driving assembly 1 is the same as the rear driving assembly 2; the front driving assembly 1 is connected with the front steering assembly 3, and the front steering assembly 3 is connected with the front tyre of the automobile. Wherein, the front driving assembly 1 can drive the front steering assembly 3 to move, so as to drive the front tire to rotate. The rear driving assembly 2 is connected with a rear steering assembly, and the rear steering assembly is connected with a rear tire of an automobile. The rear driving assembly 2 can drive the rear steering assembly to move so as to drive the rear tire to rotate; the front driving assembly 1 and the rear driving assembly 2 are respectively and electrically connected with an electronic controller of an automobile, the electronic controller is electrically connected with a main controller, and the main controller sends driving signals to the electronic controller according to a preset mode of the vehicle-mounted terminal.

The preset mode may be a two-wheel drive steering mode and a four-wheel drive steering mode. When the driver selects the preset mode as two-wheel drive steering, the vehicle-mounted terminal receives a two-wheel drive steering command and sends the two-wheel drive steering command to the electronic controller, so that the vehicle front driving assembly 1 or the vehicle rear driving assembly 2 is controlled to operate, and the vehicle front driving assembly 3 or the vehicle rear driving assembly 2 is controlled to perform power transmission.

In an alternative embodiment, the two wheel drive steering mode may include a front wheel drive steering mode and a rear wheel drive steering mode.

Optionally, the vehicle-mounted terminal can be a vehicle-mounted large screen, a vehicle-mounted central control screen and an integrated triple screen.

Alternatively, the front drive assembly 1 may be an R-EPS steer-by-wire machine.

In an alternative embodiment, the front steering assembly 3 comprises two steering knuckles 304, one on the left side of the front tire of the vehicle and one on the right side of the front tire of the vehicle, and are connected to the front tires of the vehicle, respectively. The two ends of the driving component are respectively connected with the steering knuckle 304, and the driving component can move to drive the steering knuckle 304 to rotate, so that the tires of the automobile are driven to rotate.

In an alternative embodiment, the direction of rotation of the tires of the vehicle may be different depending on the direction of movement of the drive assembly, such as: when the driving component moves leftwards, the front tire can be driven to move rightwards. For another example: when the driving assembly moves rightwards, the front tire can be driven to move leftwards.

In some more preferred embodiments, the front drive assembly 1 comprises: a power steering motor 101, a steering housing 102, and a steering member 103. The steering component 103 is disposed in the steering housing 102, two ends of the steering component 103 protrude from the steering housing 102, and two ends of the steering component 103 are respectively connected to different steering knuckles 304, so that linkage between the two steering knuckles 304 can be realized. In addition, the power steering motor 101 is detachably connected to the housing of the steering knuckle 304, can drive the steering component 103 to move, and is electrically connected with the electronic controller, and the electronic controller can receive a driving signal sent by the main controller and drive the power steering motor 101 to move the steering component 103. The power steering motor 101 receives a driving signal and controls the steering member 103 to move.

In an alternative embodiment, as shown in fig. 1 to 4, a first protruding portion, a second protruding portion 402, and a third protruding portion 403 are fixedly disposed on the steering housing 102, the first protruding portion 401 and the second protruding portion 402 are detachably connected to two vehicle body longitudinal beam mounting plates 502, and the third protruding portion 403 is detachably connected to a vehicle body cross beam mounting plate 501. Each of the projections is provided with a through hole (not shown) to allow a connecting member 1012 to pass through and be detachably connected to the body side member mounting plates 502 and the body side member mounting plates 501 of the two automobiles.

In an alternative embodiment, the connecting portion 1012 includes a bolt and a nut, so that the connection between the power steering device and the vehicle body is more stable because the nut and the bolt are connected in a manner that has the advantages of being convenient to assemble and disassemble, being convenient to overhaul, being capable of increasing pretightening force to prevent loosening and not causing phase change of material components at the connecting portion.

In some more preferred embodiments, a transmission gear is disposed in a position where the steering assist motor 101 is detachably connected to the steering housing 102, and a transmission rack is disposed on the steering member 103, and the transmission member is an object to be driven by the steering assist motor 101 and is engaged with the transmission gear through the transmission rack. The transmission gear rotates to drive the transmission rack meshed with the transmission gear to move. Meanwhile, the steering component 103 can be driven to move, so that the steering knuckle 304 is driven to rotate.

In some more preferred embodiments, the power steering motor 101 includes a control portion 1011 and a connecting portion 1012, and the control portion 1011 and the connecting portion 1012 are integrally formed. Wherein, drive gear sets up in connecting portion 1012, and control part 1011 is connected with the electronic controller electricity of car, drives drive gear and moves, and when control part 1011 received main control unit's drive signal, the drive gear in the control connecting portion 1012 rotated to drive the transmission rack and move. The arrangement mode can more effectively realize the transmission effect.

In an alternative embodiment, the steering housing 102 is further provided with a rotating portion, the rotating portion is connected with the control portion 1011 through a high-voltage wire harness, a steering gear is arranged in the rotating control portion 1011, a steering rack meshed with the steering gear is arranged on the steering component 103, and a rotating torque sensor is further arranged in the rotating control portion 1011 and used for detecting the torque of the steering gear. When the torque reaches a certain amount, the steering gear stops rotating.

In an optional embodiment, a steering column is further connected to the steering gear, the steering column is connected to a steering wheel of the automobile, and a steering angle sensor is arranged on the steering wheel and used for detecting the rotation angle of the steering wheel. When the steering wheel is controlled, the steering angle sensor generates corresponding electric signals according to torque and a corner on a steering column, and the control part 1011 controls the rotation direction of the transmission gear and controls the rotating gear to realize power-assisted steering according to the electric signals and a vehicle speed signal detected by a vehicle speed sensor of an automobile.

In some more preferred embodiments, the steering component 103 includes a steering tie rod 1031, a tie rod joint, and a lock nut. The tie bar 1031 has its ends connected to tie bar joints, which are connected to the knuckle 304. The tie bar 1031 is horizontally disposed, and the tie bar 1031 can be horizontally moved leftward or rightward by mutual transmission between the transmission rack and the transmission gear, thereby driving the knuckle 304 to rotate.

In an alternative embodiment, the tie rod joint is a ball stud 301, the main function of the ball stud 301 is to realize up-and-down jumping and steering movement of the wheel, and the ball stud 301 is provided with a joint which is in ball-joint connection with the knuckle 304, so that the stability of connection between the knuckle 304 and the joint can be ensured.

In some more preferred embodiments, two portions of the tie rod of the knuckle 304 protruding from the steering housing 102 are respectively provided with a dust-proof sleeve 201, one end of the dust-proof sleeve 201 is sleeved on the steering housing 102, and the other end is sleeved on the tie rod 1031. Since the steering link 1031 needs to be driven to rotate the wheels, if a large amount of dust enters the interior thereof, the steering link 1031 cannot move, and personal safety of the driver or the passenger is damaged. Therefore, by means of the dustproof sleeve 201, dust can be prevented from entering the dustproof sleeve, and accordingly safety of personnel is guaranteed.

In some more preferred embodiments, a bushing 303 is disposed at a position where the ball stud 301 is connected to the knuckle 304, since the bushing 303 has an effect of reducing wear, vibration and noise of the equipment and preventing corrosion. Therefore, the bushing 303 is sleeved on the ball stud 301, so that the sealing effect of the ball stud 301 can be ensured, and the abrasion of the ball stud 301 during rotation can be reduced.

In some more preferred embodiments, the knuckle 304 includes a groove-shaped structure, a connecting arm detachably connected to the ball stud 301 is provided on a side wall of the groove-shaped structure, a connecting hole is provided on the connecting arm, and the protruding portion 302 of the ball stud 301 passes through the connecting hole.

In an alternative embodiment, the knuckle 304 includes a first ball socket 601 and a second ball socket 602 for connecting the upper control arm and the lower control arm, the first ball socket 601 is connected to the upper control arm, the second ball is connected to the lower control arm, the upper control arm is connected to the body rail mounting plate 502, and the lower control arm is connected to the body rail mounting plate 502, so that the wheels of the vehicle can jump up and down.

In an alternative embodiment, shown in fig. 1-6, there is provided a steering method, the method comprising:

step S61: and generating a driving signal under the condition of receiving a preset mode sent by the vehicle-mounted terminal.

Step S63: sending a driving signal to an electronic controller of the automobile so that the electronic controller drives the front driving assembly 1 and/or the rear driving assembly 2; wherein, the front driving assembly 1 drives the front steering assembly 3 to rotate so as to rotate the front tyre of the automobile connected with the front steering assembly 3;

and/or the rear driving assembly 2 drives the rear steering assembly to rotate so as to enable a rear tire of the automobile connected with the rear steering assembly to rotate, and the front steering assembly 3 can obtain the rear steering assembly through rotating and translating; the front driving assembly 1 can obtain a rear driving assembly 2 through rotating and translating, the front driving assembly 1 is connected with the front steering assembly 3, the rear driving assembly 2 is connected with the rear steering assembly, and the front driving assembly 1 and the rear driving assembly 2 are respectively electrically connected with the electronic controller.

Specifically, the main controller of the automobile can be used as the execution subject of the present application. The communication relation is established between the main controller and the electronic controller, the main controller receives a driving signal which is sent by the vehicle-mounted terminal and based on a preset mode of the vehicle-mounted terminal, it needs to be explained that the preset mode can be a two-wheel drive steering mode and a four-wheel drive steering mode, and the preset mode can be a mode determined by a driver. The electronic controller receives the driving signal and controls the front driving assembly 1 and/or the rear driving assembly 2 to move through the driving signal, wherein the front driving assembly 1 drives the front steering assembly 3 to rotate so as to enable the front tire of the automobile connected with the front steering assembly 3 to rotate; the rear drive assembly 2 drives the rear steering assembly to rotate so as to rotate the rear tires of the vehicle connected with the rear steering assembly. Such as: when the received driving signal is to control only the front wheels to steer, the electronic controller only needs to control the front driving assembly 1 to rotate the front steering assembly 3 connected with the front driving assembly 1, so as to drive the front wheels to rotate.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. A steering assist device, characterized by comprising:

the front steering assembly, the front driving assembly, the rear steering assembly and the rear driving assembly;

the front driving assembly is connected with the front steering assembly and is used for driving the front steering assembly to move so as to enable a front tire of an automobile connected with the front steering assembly to rotate;

the rear driving assembly is connected with the rear steering assembly and is used for driving the rear steering assembly to move so as to enable a rear tire of the automobile connected with the rear steering assembly to rotate;

the front driving assembly and the rear driving assembly are respectively and electrically connected with an electronic controller of an automobile, and the electronic controller is used for receiving driving signals; the driving signal is a driving signal sent by a main controller of the automobile based on a preset mode of the vehicle-mounted terminal;

the front steering assembly can obtain the rear steering assembly through rotation and translation;

the front drive assembly can be configured to receive the rear drive assembly via rotational translation.

2. The power steering apparatus according to claim 1, characterized in that the front steering assembly includes:

two steering knuckles;

two ends of the driving assembly are respectively connected with the steering knuckle;

the two steering knuckles are respectively connected with front tires of different automobiles.

3. The power steering apparatus according to claim 2, wherein the front drive assembly includes: a power steering motor, a steering housing and a steering member;

the steering component is arranged in the steering engine shell, and two ends of the steering component protrude out of the steering engine shell;

the two ends of the steering component protruding out of the steering shell are respectively connected with the steering knuckle;

the power steering motor is detachably connected to the steering machine shell and used for driving the steering component to move;

the power steering motor is electrically connected with the electronic controller.

4. The power steering device according to claim 3, wherein a transmission gear is provided in a position where the power steering motor is detachably connected to the steering housing;

a transmission rack meshed with the transmission gear is arranged on the steering component;

the steering component is connected with the power steering motor through the transmission rack and the transmission gear.

5. The steering assist device according to claim 4, wherein the steering assist motor includes: a control unit;

and a connecting part integrally formed with the control part;

the transmission gear is arranged in the connecting part;

the control part is electrically connected with an electronic controller of the automobile and used for driving the transmission gear to move.

6. The steering assist device according to claim 4, characterized in that the steering member includes:

the steering pull rod, the pull rod joint and the locking nut;

the steering pull rod is arranged in the steering engine shell, and two ends of the steering pull rod protrude out of the steering engine shell;

the transmission rack is arranged on the steering pull rod;

the two ends of the steering pull rod protruding out of the steering engine shell are respectively detachably connected with the pull rod joint through locking nuts;

the tie rod joint is connected with the steering knuckle.

7. The steering assist device according to claim 6, characterized in that the tie-rod joint is a ball stud.

8. The steering assist device according to claim 6, characterized by further comprising a dust boot;

one end of the dustproof sleeve is sleeved on the steering engine shell, and the other end of the dustproof sleeve is sleeved on the steering pull rod.

9. The power steering apparatus according to claim 7, wherein a bush is fitted over the ball stud.

10. A steering method, characterized in that the method comprises:

generating a driving signal under the condition of receiving a preset mode sent by a vehicle-mounted terminal;

sending the drive signal to an electronic controller of the automobile to cause the electronic controller to drive a front drive assembly and/or a rear drive assembly; the front driving assembly drives the front steering assembly to rotate so as to enable a front tire of an automobile connected with the front steering assembly to rotate;

and/or the rear driving assembly drives the rear steering assembly to rotate so as to rotate a rear tire of the automobile connected with the rear steering assembly, and the front steering assembly can obtain the rear steering assembly through rotation and translation; the front driving assembly can obtain the rear driving assembly through rotation and translation, the front driving assembly is connected with the front steering assembly, the rear driving assembly is connected with the rear steering assembly, and the front driving assembly and the rear driving assembly are respectively electrically connected with the electronic controller.

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