Steering gear for vehicle and vehicle

Abstract

The invention discloses a steering gear for a vehicle and the vehicle, and relates to the technical field of vehicles. The power output mechanism is arranged on the shell; the belt pulley transmission mechanism is in transmission connection with the power output mechanism and is used for driving the power output mechanism to rotate; and the plurality of driving motors are in transmission connection with the belt pulley transmission mechanism and are configured to drive the belt pulley transmission mechanism to drive the power output mechanism to rotate. The multiple driving motors are arranged, each driving motor drives the belt wheel transmission mechanism to drive the power output mechanism to rotate, larger torque and assistance can be output to the power output mechanism, the steering function of the steering gear can be reliably achieved, and the risk that the function of the steering gear cannot be achieved due to the fact that the vehicle load is too large is reduced; and when any driving motor breaks down, other driving motors can continue to play a driving role, so that the working reliability of the steering gear is improved, and the use safety of a vehicle is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a steering gear for a vehicle and a vehicle having the steering gear. Background Art

[0002] With the popularization of vehicle electrification, in order to meet the demand for long vehicle range, the weight of batteries has gradually increased, and the full load weight of the vehicle has also increased accordingly, resulting in an increase in vehicle load.

[0003] In the related art, the steering gear is provided with a drive motor, and the torque of the drive motor is insufficient to meet the large load requirement of the whole vehicle. Moreover, when the drive motor fails, the whole vehicle has no power assistance, which may easily lead to traffic accidents and the safety performance of the vehicle is poor. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a steering gear for a vehicle, so that the steering gear can reliably realize the steering function and improve the working reliability of the steering gear.

[0005] The present invention further provides a vehicle.

[0006] The steering gear according to an embodiment of the present invention includes: a housing; a power output mechanism, which is rotatably arranged on the housing; a pulley transmission mechanism, which is transmission-connected to the power output mechanism and is used to drive the power output mechanism to rotate; and a plurality of drive motors, each of which is transmission-connected to the pulley transmission mechanism and is configured to drive the pulley transmission mechanism to drive the power output mechanism to rotate.

[0007] The steering gear according to the embodiment of the present invention is equipped with multiple drive motors, and each drive motor drives the pulley transmission mechanism to drive the power output mechanism to rotate, so that a greater torque and power assistance can be output to the power output mechanism, so that the steering gear can reliably realize the steering function, and reduce the risk of the steering gear function not being realized due to excessive vehicle load. Moreover, when any one of the drive motors fails, the other drive motors can continue to play a driving role, which is beneficial to improving the working reliability of the steering gear, thereby improving the safety of vehicle use.

[0008] In some embodiments of the present invention, the pulley transmission mechanism is configured as a transmission reduction structure.

[0009] In some embodiments of the present invention, the pulley transmission mechanism includes: a first pulley, a second pulley and a synchronous belt, the first pulley is arranged on the power output mechanism, the second pulley is fixed on the motor output shaft of a drive motor, the synchronous belt is sleeved on the first pulley and the second pulley, and the motor output shaft of another part of the drive motor is connected to the second pulley for transmission.

[0010] In some embodiments of the present invention, the diameter of the first pulley is greater than the diameter of the second pulley.

[0011] In some embodiments of the present invention, the steering gear also includes: a transmission connection device, the multiple drive motors include: a first motor and a second motor, the second pulley is fixed to the motor output shaft of the first motor, and the transmission connection device is transmission-connected between the motor output shaft of the second motor and the second pulley.

[0012] In some embodiments of the present invention, the transmission connection device includes: a first connection part and a connecting body, the second pulley has a second connection part, the first connection part is fixed to the motor output shaft of the second motor, and the connecting body is assembled between the first connection part and the second connection part to fix the first connection part and the second connection part.

[0013] In some embodiments of the present invention, the connecting body is configured as an elastomer.

[0014] In some embodiments of the present invention, the side of the first connecting part facing the second connecting part has a plurality of first limiting bosses, and the plurality of first limiting bosses are arranged in sequence along the circumference of the first connecting part to form a first assembly gap between any two adjacent first limiting bosses. The side of the second connecting part facing the second connecting part has a plurality of second limiting bosses, and the plurality of second limiting bosses are arranged in sequence along the circumference of the second connecting part to form a second assembly gap between any two adjacent second limiting bosses. A plurality of third bosses are formed on the outer peripheral wall of the connecting body, and the plurality of first limiting bosses are respectively assembled in the corresponding second assembly gaps, and the plurality of second limiting bosses are respectively assembled in the corresponding first assembly gaps, and a third boss is sandwiched between any two adjacent first limiting bosses and second limiting bosses.

[0015] In some embodiments of the present invention, the first motor and the second motor are arranged opposite to each other, the transmission connection device is located between the first motor and the second motor, and the motor output shaft of the first motor and the motor output shaft of the second motor are arranged coaxially.

[0016] A vehicle according to an embodiment of the present invention includes the steering gear for a vehicle according to the above embodiment.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a schematic structural diagram of a steering gear according to an embodiment of the present invention;

[0020] Figure 2 is a cross-sectional view of a steering gear (power output mechanism is a ball screw) according to an embodiment of the present invention;

[0021] Figure 3 is an exploded view of a steering gear according to an embodiment of the present invention;

[0022] Figure 4 is a schematic diagram of assembling a second motor and a first connecting portion according to an embodiment of the present invention;

[0023] Figure 5 is a schematic diagram of assembling a second pulley and a first motor according to an embodiment of the present invention;

[0024] Figure 6 is an exploded view of a transmission connection device and a second pulley according to an embodiment of the present invention;

[0025] Figure 7 It is a cross-sectional view of a steering gear (the power output mechanism is a T-type lead screw) according to an embodiment of the present invention.

[0026] Reference numerals:

[0027] Steering gear 100;

[0028] Housing 1; first sub-housing 11; second sub-housing 12; assembly space 13;

[0029] Power output mechanism 2;

[0030] Pulley transmission mechanism 3; first pulley 31; second pulley 32; second connecting portion 321; second limiting boss 322; second assembly gap 323; synchronous belt 33;

[0031] Driving motor 4; first motor 41; first output shaft 411; second motor 42;

[0032] Transmission connection device 5; first connection part 51; first limiting boss 511; first assembly gap 512; connection body 52; third boss 521; third assembly gap 522. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] Reference below Figure 1-Figure 7The steering gear 100 according to an embodiment of the present invention is described. The steering gear 100 can be used in vehicles, airplanes, ships and other equipment that require steering. The present application takes the application of the steering gear 100 in a vehicle as an example for explanation.

[0035] like Figure 1-Figure 7 As shown, the steering gear 100 according to an embodiment of the present invention includes: a housing 1; a power output mechanism 2, which is rotatably arranged on the housing 1; a pulley transmission mechanism 3, which is transmission-connected to the power output mechanism 2, and the pulley transmission mechanism 3 is used to drive the power output mechanism 2 to rotate; a plurality of drive motors 4, each of which is transmission-connected to the pulley transmission mechanism 3, and each of which is configured to drive the pulley transmission mechanism 3 to drive the power output mechanism 2 to rotate.

[0036] The housing 1 may define an assembly space 13. As some embodiments of the present application, Figure 1 As shown, the power output mechanism 2 can be constructed as a ball screw. As some embodiments of the present application, Figure 7 As shown, the power output mechanism 2 can be constructed as a T-type screw. The power output mechanism 2 is the output shaft of the steering gear 100. The power output mechanism 2 is rotatably arranged on the housing 1, for example: the power output mechanism 2 can be rotatably arranged in the assembly space 13, so that the power output mechanism 2 can work stably in the assembly space 13, reduce the interference of the external environment on the power output mechanism 2, and help improve the working stability of the steering gear 100.

[0037] The pulley transmission mechanism 3 is transmission-connected with the power output mechanism 2, so that the pulley transmission mechanism 3 can transmit torque to the power output mechanism 2, and the power output mechanism 2 is driven to rotate by the pulley transmission mechanism 3, so as to achieve the effect of driving the power output mechanism 2 to rotate, thereby achieving the effect of the steering gear 100 assisting the vehicle in steering. The driving motor 4 can be set to be multiple, for example: the driving motor 4 can be set to be two, three or more, and the multiple driving motors 4 are all transmission-connected with the pulley transmission mechanism 3, so that the multiple driving motors 4 are all transmission-connected with the power output mechanism 2 through the pulley transmission mechanism 3, so that each driving motor 4 can drive the pulley transmission mechanism 3, and then drive the power output mechanism 2 to rotate, so as to achieve the effect of outputting greater torque and assistance to the power output mechanism 2.

[0038] By configuring each drive motor 4 to drive the pulley transmission mechanism 3 to drive the power output mechanism 2 to rotate, the steering gear 100 can reliably realize the steering function, reducing the risk of the steering function of the steering gear 100 not being able to be realized due to excessive vehicle load. In addition, providing multiple drive motors 4 can improve the driving reliability. When any one of the drive motors 4 fails and causes the drive failure, the other drive motors 4 can continue to play a driving role, which is beneficial to improving the working reliability of the steering gear 100, thereby improving the safety of vehicle use.

[0039] When the vehicle is traveling on complex or bad road conditions, the multiple drive motors 4 together provide greater traction for the steering gear 100, allowing the vehicle to overcome resistance more easily, and can also significantly improve the acceleration performance of the vehicle, allowing the vehicle to reach the required speed faster.

[0040] The multiple drive motors 4 can work separately according to actual working needs to achieve reasonable energy distribution. When all the drive motors 4 are not needed to work, some of the drive motors 4 can be turned off to reduce energy consumption. By optimizing the control strategy of the drive motors 4, higher energy conversion efficiency can be achieved, thereby achieving the effect of reducing vehicle energy consumption.

[0041] Specifically, the steering gear 100 of the vehicle can be the steering gear 100 on the front side of the vehicle or the steering gear 100 on the rear side of the vehicle. The power output mechanism 2 of the steering gear 100 on the front side can be constructed as a ball screw. The ball screw has high precision and strong rigidity. Constructing the power output mechanism 2 of the steering gear 100 on the front side as a ball screw can improve the positioning accuracy of the steering gear 100. The ball screw is rotatably assembled on the housing 1, and the ball screw is connected to the pulley transmission mechanism 3. The two drive motors 4 are both connected to the pulley transmission mechanism 3, so that the two drive motors 4 can drive the pulley transmission mechanism 3 to drive the ball screw to rotate, thereby achieving the effect of precise steering of the steering gear 100 on the front side of the vehicle.

[0042] The power output mechanism 2 of the rear steering gear 100 can be constructed as a T-type lead screw, which is small in size, flexible in design, and has a certain self-locking ability. Since the rear steering gear 100 is not controlled by a steering wheel, by constructing the power output mechanism 2 as a T-type lead screw, when the drive motor 4 stops working, the T-type lead screw can rely on its own threaded structure and friction to maintain the current position, prevent accidental movement, and thus reduce the risk of vehicle loss of control. The T-type lead screw is rotatably assembled to the housing 1, and the T-type lead screw is transmission-connected to the pulley transmission mechanism 3, and the two drive motors 4 are both transmission-connected to the pulley transmission mechanism 3, so that the two drive motors 4 can drive the pulley transmission mechanism 3 to drive the T-type lead screw to rotate, thereby achieving the effect of precise steering of the steering gear 100 at the rear of the vehicle.

[0043] Therefore, by setting up multiple drive motors 4, and each drive motor 4 drives the pulley transmission mechanism 3 to drive the power output mechanism 2 to rotate, a larger torque and power assistance can be output to the power output mechanism 2, so that the steering gear 100 can reliably realize the steering function, reducing the risk of the steering gear 100 function failing to be realized due to excessive vehicle load, and when any one of the drive motors 4 fails, the other drive motors 4 can continue to play a driving role, which is beneficial to improving the working reliability of the steering gear 100, thereby improving the safety of vehicle use.

[0044] In some embodiments of the present invention, Figure 2 , Figure 3 and Figure 7 As shown, the belt pulley transmission mechanism 3 is constructed as a transmission reduction structure.

[0045] Among them, the pulley transmission mechanism 3 is constructed as a transmission reduction structure, which can make the structural setting of the pulley transmission mechanism 3 reasonable. The pulley transmission mechanism 3 is transmission-connected with the power output mechanism 2 and the drive motor 4 to transmit the torque and power assistance of the drive motor 4 to the power output mechanism 2. Since the rotation speed of the drive motor 4 is usually high, the pulley transmission mechanism 3 is constructed as a transmission reduction structure. The reduction transmission effect of the pulley transmission mechanism 3 can be achieved, thereby reducing the rotation speed of the power output mechanism 2, reducing the risk of the vehicle skidding and drifting due to the steering gear 100 turning too fast, thereby improving the safety of the vehicle. In addition, the transmission reduction structure can have the effect of deceleration and torque increase, and can increase the torque output of the power output mechanism 2, thereby improving the power assistance effect, reducing the force required for the driver to turn the steering wheel, improving the vehicle's controllability, and thereby improving the driver's driving experience.

[0046] Furthermore, the transmission reduction structure can ensure a stable transmission relationship between the input and output of the steering gear 100 through precise speed ratio design and transmission coordination, which is beneficial to reducing errors and deviations during the steering process and improving the accuracy and stability of the steering gear 100.

[0047] In some embodiments of the present invention, Figure 2 , Figure 3 and Figure 7 As shown, the pulley transmission mechanism 3 may include: a first pulley 31, a second pulley 32 and a synchronous belt 33, the first pulley 31 is arranged on the power output mechanism 2, the second pulley 32 is fixed to the motor output shaft of a drive motor 4, the synchronous belt 33 is sleeved on the first pulley 31 and the second pulley 32, and the motor output shaft of another part of the drive motor 4 is transmission connected with the second pulley 32.

[0048] The power output mechanism 2 is rotatably disposed on the housing 1, the first pulley 31 is fixedly disposed on the power output mechanism 2, the first pulley 31 can be press-fitted on the power output mechanism 2, and the first pulley 31 and the power output mechanism 2 are both assembled in the assembly space 13. The second pulley 32 is fixedly disposed on the motor output shaft of a drive motor 4, for example: the second pulley 32 can be press-fitted on the motor output shaft of a drive motor 4 by interference fit, and the second pulley 32 can also be welded to the motor output shaft of a drive motor 4, so that the second pulley 32 is fixedly connected to the motor output shaft of a drive motor 4.

[0049] The synchronous belt 33 is sleeved on the first pulley 31 and the second pulley 32, so that the first pulley 31 and the second pulley 32 are connected through the synchronous belt 33, so that the drive motor 4 drives the second pulley 32 to rotate, drives the first pulley 31 to rotate through the synchronous belt 33, and drives the power output mechanism 2 to rotate through the first pulley 31, thereby realizing the effect of the drive motor 4 driving the pulley transmission mechanism 3 to drive the power output mechanism 2 to rotate.

[0050] The motor output shafts of another part of the drive motors 4 are all connected to the second pulley 32 through transmission. For example, the motor output shafts of another part of the drive motors 4 are all connected to the second pulley 32 through gear transmission, or, the motor output shafts of another part of the drive motors 4 are all connected to the second pulley 32 through belt transmission, so that the motor output shafts of multiple drive motors 4 can rotate synchronously, so that multiple drive motors 4 can jointly output torque and assistance to the power output mechanism 2, thereby reducing the risk of the steering gear 100 failing to function due to excessive vehicle load, which is conducive to improving the reliability of vehicle use.

[0051] In some embodiments of the present invention, Figure 3 As shown, the diameter of the first pulley 31 is greater than the diameter of the second pulley 32 .

[0052] Among them, the diameter of the first pulley 31 is larger than the diameter of the second pulley 32. Such an arrangement can make the structural dimensions of the first pulley 31 and the structural dimensions of the second pulley 32 reasonably designed, which is conducive to constructing the pulley transmission mechanism 3 as a transmission deceleration structure, thereby achieving a deceleration effect, reducing the risk of vehicle skidding and drifting due to excessive speed of the power output mechanism 2, thereby improving the safety of vehicle use, and the transmission deceleration structure can have the effect of deceleration and torque increase, and can increase the torque output of the power output mechanism 2, thereby improving the power assistance effect, reducing the force required for the driver to turn the steering wheel, improving the vehicle's controllability, and thereby improving the driver's driving experience.

[0053] Furthermore, compared with a pulley transmission mechanism 3 constructed as a transmission reduction structure by other means, by making the diameter of the first pulley 31 larger than the diameter of the second pulley 32, the pulley transmission mechanism 3 can have a simple structure and be easily assembled, which is beneficial to reducing the production cost of the steering gear 100. It is also convenient to assemble the pulley transmission mechanism 3 to the steering gear 100, which is beneficial to reducing the labor intensity of the assemblers and improving the production efficiency of the steering gear 100.

[0054] In some embodiments of the present invention, Figure 3 and Figure 6 As shown, the steering gear 100 may also include: a transmission connection device 5, the multiple drive motors 4 may include: a first motor 41 and a second motor 42, the second pulley 32 is fixed to the motor output shaft of the first motor 41, and the transmission connection device 5 is transmission-connected between the motor output shaft of the second motor 42 and the second pulley 32.

[0055] Wherein, the housing 1 may include a first sub-housing 11 and a second sub-housing 12. As some embodiments of the present application, the first motor 41 is assembled in the first sub-housing 11, and the second motor 42 is assembled in the second sub-housing 12. As some embodiments of the present application, the first motor 41 is assembled in the second sub-housing 12, and the second motor 42 is assembled in the first sub-housing 11. The first motor 41 and the second motor 42 may be fixed to the corresponding first sub-housing 11 or the second sub-housing 12 by means of, but not limited to, bolts, clamping, etc. By assembling the first motor 41 and the second motor 42 separately, the risk of electromagnetic interference between the first motor 41 and the second motor 42 may be reduced.

[0056] As some embodiments of the present application, the first motor 41 and the second motor 42 may both include a controller, and the output accuracy of the first motor 41 and the second motor 42 may be improved by controlling the motor output shaft of the first motor 41 and the motor output shaft of the second motor 42 to rotate by the controller. The second pulley 32 is fixedly arranged on the motor output shaft of the first motor 41, and the motor output shaft of the first motor 41 may be configured as a first output shaft 411, for example: the second pulley 32 may be, but not limited to, fixedly arranged on the first output shaft 411 by interference press fitting, welding, etc., the transmission connection device 5 is transmission-connected between the motor output shaft of the second motor 42 and the second pulley 32, and the motor output shaft of the second motor 42 may be configured as a second output shaft, for example: the transmission connection device 5 may be, but not limited to, transmission-connected between the second output shaft and the second pulley 32 by clamping, welding, etc., so that the second output shaft and the second pulley 32 can rotate synchronously, thereby achieving the effect that the first motor 41 and the second motor 42 jointly output a greater torque and assistance to the power output mechanism 2.

[0057] When the vehicle is traveling on complex or bad road conditions, the first motor 41 and the second motor 42 together provide greater traction for the steering gear 100, so that the vehicle can more easily overcome resistance, and can also significantly improve the acceleration performance of the vehicle, so that the vehicle can reach the required speed faster.

[0058] The first motor 41 and the second motor 42 can work separately according to actual working needs to achieve reasonable energy distribution. When the second motor 42 is not needed to work, the second motor 42 can be turned off to reduce energy consumption. By optimizing the control strategy of the first motor 41 and the second motor 42, a higher energy conversion efficiency can be achieved, thereby achieving the effect of reducing vehicle energy consumption.

[0059] In some embodiments of the present invention, Figure 4-Figure 6 As shown, the transmission connection device 5 may include: a first connection part 51 and a connection body 52, the second pulley 32 has a second connection part 321, the first connection part 51 is fixed to the motor output shaft of the second motor 42, and the connection body 52 is assembled between the first connection part 51 and the second connection part 321 to fix the first connection part 51 and the second connection part 321.

[0060] The first connection part 51 is fixed to the motor output shaft of the second motor 42. For example, the first connection part 51 can be press-fitted to the second output shaft or welded to the second output shaft so that the first connection part 51 and the second output shaft rotate synchronously. The connecting body 52 is assembled between the first connection part 51 and the second connection part 321. As some embodiments of the present application, the connecting body 52 can be constructed as a spline. The first connection part 51 and the second connection part 321 can both be formed with at least one latching tooth. The latching tooth is assembled in the keyway of the spline, so that the connecting body 52 can be locked between the first connection part 51 and the second connection part 321, thereby achieving the effect of synchronous rotation of the first motor 41 and the second output shaft.

[0061] As some embodiments of the present application, the connecting body 52 can be constructed as a herringbone gear, and the first connecting part 51 and the second connecting part 321 are both formed with a tooth structure adapted to the herringbone gear. Along the thickness direction of the herringbone gear, the teeth on both sides of the herringbone gear are respectively snap-connected with the first connecting part 51 and the second connecting part 321, so that the first connecting part 51 and the second connecting part 321 are fixedly assembled, thereby achieving the effect of synchronous rotation of the first motor 41 and the second output shaft, and further achieving the effect of the first motor 41 and the second motor 42 jointly outputting greater torque and assistance to the power output mechanism 2, so that the steering gear 100 can reliably realize the steering function and reduce the risk of the steering gear 100 function failing to be realized due to excessive vehicle load.

[0062] In some embodiments of the present invention, Figure 6 As shown, the connecting body 52 is designed as an elastomer.

[0063] Among them, the connecting body 52 can be constructed as an elastic part, and the elastic part can play the effects of buffering energy absorption and noise reduction. By constructing the connecting body 52 as an elastic part, the vibration of the transmission connection device 5 can be reduced, which is beneficial to compensate for the dimensional error between the first connection part 51 and the connecting body 52, and between the connecting body 52 and the second connection part 321, thereby reducing the wear of the first connection part 51 and the second connection part 321, which is beneficial to extending the service life of the transmission connection device 5.

[0064] Furthermore, the elastic body generally has good wear resistance, corrosion resistance and anti-aging properties. These properties enable the connecting body 52 to maintain its original performance during long-term transmission use, and is not easily corroded or damaged by the external environment, which is conducive to improving the service life and durability of the transmission connection device 5.

[0065] In some embodiments of the present invention, as shown in Figure 6, the first connection portion 51 has a plurality of first limiting bosses 511 on one side facing the second connection portion 321, and the plurality of first limiting bosses 511 are sequentially arranged at intervals along the circumference of the first connection portion 51 to form a first assembly gap 512 between any two adjacent first limiting bosses 511. The second connection portion 321 has a plurality of second limiting bosses 322 on one side facing the second connection portion 321, and the plurality of second limiting bosses 322 are sequentially arranged at intervals along the circumference of the second connection portion 321 to form a second assembly gap 323 between any two adjacent second limiting bosses 322. The outer peripheral wall of the connecting body 52 is formed with a plurality of third bosses 521, and the plurality of first limiting bosses 511 are respectively assembled in the corresponding second assembly gaps 323, and the plurality of second limiting bosses 322 are respectively assembled in the corresponding first assembly gaps 512, and a third boss 521 is sandwiched between any two adjacent first limiting bosses 511 and the second limiting bosses 322.

[0066] Among them, the first connecting part 51 has multiple first limiting bosses 511, and the multiple first limiting bosses 511 are arranged on the side of the first connecting part 51 facing the second connecting part 321. For example, two, three, four or more first limiting bosses 511 can be provided. Along the circumference of the first connecting part 51, the multiple first limiting bosses 511 are arranged in sequence at intervals to form a first assembly gap 512 between any two adjacent first limiting bosses 511. Furthermore, the spacing distance between any two adjacent first limiting bosses 511 among the multiple first limiting bosses 511 can be the same. The second connection part 321 has a plurality of second limiting bosses 322, and the plurality of second limiting bosses 322 are arranged on the side of the second connection part 321 facing the first connection part 51. For example, two, three, four or more second limiting bosses 322 may be provided. Along the circumference of the second connection part 321, the plurality of second limiting bosses 322 are arranged in sequence at intervals to form a second assembly gap 323 between any two adjacent second limiting bosses 322. Furthermore, the spacing distance between any two adjacent second limiting bosses 322 among the plurality of second limiting bosses 322 may be the same.

[0067] The connecting body 52 is formed with a plurality of third bosses 521, and the third bosses 521 are formed on the outer peripheral wall of the connecting body 52. ​​For example, the third bosses 521 may be provided with two, three, four, eight or more. Along the circumference of the connecting body 52, the plurality of third bosses 521 are sequentially arranged at intervals, and a third assembly gap 522 is formed between any two adjacent third bosses 521. The present application is described by taking the example that the first connecting portion 51 has four first limiting bosses 511, and the four first limiting bosses 511 are evenly arranged at intervals along the circumference of the first connecting portion 51, the second connecting portion 321 has four second limiting bosses 322, and the four second limiting bosses 322 are evenly arranged at intervals along the circumference of the second connecting portion 321, and the connecting body 52 is formed with eight third bosses 521, and the eight third bosses 521 are evenly arranged at intervals along the circumference of the connecting body 52.

[0068] The connecting body 52 is placed between the first connecting part 51 and the second connecting part 321. The four first limiting bosses 511 are respectively passed through the corresponding four third assembly gaps 522 and are respectively assembled in the corresponding four second assembly gaps 323. The four second limiting bosses 322 are respectively passed through the corresponding remaining four third assembly gaps 522 and are assembled in the corresponding four first assembly gaps 512, so that a third boss 521 is sandwiched between any two adjacent first limiting bosses 511 and second limiting bosses 322, thereby completing the assembly of the first connecting part 51, the connecting body 52 and the second connecting part 321.

[0069] Assembling the connecting body 52 between the first connecting part 51 and the second connecting part 321 can make the first connecting part 51 and the second connecting part 321 reliably locked and assembled, which is beneficial to further achieve the synchronous rotation effect of the first motor 41 and the second output shaft, and is also beneficial to reduce the risk of wear and noise of the first connecting part 51 or the second connecting part 321 caused by direct assembly of the first connecting part 51 and the second connecting part 321, thereby further extending the service life of the transmission connection device 5.

[0070] In some embodiments of the present invention, Figure 1 , Figure 2 , Figure 3 and Figure 7 As shown, the first motor 41 and the second motor 42 are arranged opposite to each other, the transmission connection device 5 is located between the first motor 41 and the second motor 42, and the motor output shaft of the first motor 41 and the motor output shaft of the second motor 42 are coaxially arranged.

[0071] Among them, the first motor 41 and the second motor 42 are arranged opposite to each other, and the first motor 41 and the second motor 42 are arranged separately, and the transmission connection device 5 is located between the first motor 41 and the second motor 42, so that the output shaft of the first motor 41 and the output shaft of the second motor 42 rotate synchronously through the transmission connection device 5, and the first output shaft 411 and the second output shaft are coaxially arranged, so that the first motor 41 and the second motor 42 jointly output a greater torque and assist effect to the power output mechanism 2, and the transmission connection device 5 is located between the first motor 41 and the second motor 42, and the coaxial arrangement of the first output shaft 411 and the second output shaft can reduce the friction and wear between the equipment, thereby reducing the risk of failure of the steering gear 100, which is beneficial to extending the service life of the steering gear 100.

[0072] The coaxial arrangement can reduce the number of transmission elements such as gears and chains between the first motor 41 and the second motor 42, thereby reducing the complexity and manufacturing cost of the transmission system, and since the relative movement and impact between the transmission elements are reduced, the vibration and noise during the transmission process can be reduced, and the comfort of the vehicle can be improved. By making the output shaft of the first motor 41 and the output shaft of the second motor 42 share the same axis, the space occupied by the steering gear 100 on the vehicle can also be reduced, which is conducive to realizing a compact design of the steering gear 100.

[0073] In some embodiments of the present invention, Figure 2As shown, the first sub-housing 11 and the second sub-housing 12 can be arranged relative to each other along the arrangement direction of the first motor 41 and the second motor 42, the first sub-housing 11 and the second sub-housing 12 can be detachably connected, the first sub-housing 11 and the second sub-housing 12 jointly define an assembly space 13, the first motor 41 is located on the side of the first sub-housing 11 away from the second sub-housing 12, the second motor 42 is located on the side of the second sub-housing 12 away from the first sub-housing 11, and the main body of the first motor 41 and the main body of the second motor 42 are both located outside the housing 1. The first output shaft 411 is penetrated through the first sub-housing 11 to extend into the assembly space 13, the second pulley 32 is located in the assembly space 13, the second output shaft is penetrated through the second sub-housing 12 to extend into the assembly space 13, the transmission connection device 5 is located in the assembly space 13, and the transmission connection device 5 is connected between the second output shaft and the second pulley 32. Such a configuration is conducive to making the steering gear 100 compact, thereby facilitating the reduction of the assembly space of the steering gear 100, thereby facilitating the spatial arrangement of the vehicle.

[0074] The vehicle according to the embodiment of the present invention includes the steering gear 100 for the vehicle of the above embodiment. By setting a plurality of drive motors 4, and each drive motor 4 drives the pulley transmission mechanism 3 to drive the power output mechanism 2 to rotate, a greater torque and power assist can be output to the power output mechanism 2, so that the steering gear 100 can reliably realize the steering function, reducing the risk of the steering gear 100 function failing to be realized due to excessive vehicle load, and when any one of the drive motors 4 fails, the other drive motors 4 can continue to play a driving role, which is conducive to improving the working reliability of the steering gear 100, thereby improving the safety of vehicle use.

[0075] As an embodiment of the present application, the steering gear 100 may include a power output mechanism 2, a housing 1, a pulley transmission mechanism 3, a first motor 41 and a second motor 42, and the housing 1 may include a first sub-housing 11 and a second sub-housing 12, and the first sub-housing 11 and the second sub-housing 12 jointly define an assembly space 13. Along the axial direction of the power output mechanism 2, the first sub-housing 11 and the second sub-housing 12 are arranged relative to each other, and the first motor 41 is fixed to the first sub-housing 11 by bolts, and the second motor 42 is fixed to the second sub-housing 12 by bolts, so that the first motor 41 and the second motor 42 are arranged relative to each other. Furthermore, the output shaft of the first motor 41 and the output shaft of the second motor 42 are coaxially arranged, which can reduce friction and wear between the devices, thereby reducing the risk of failure of the steering gear 100, which is conducive to extending the service life of the steering gear 100.

[0076] The power output mechanism 2 is rotatably disposed in the assembly space 13 of the housing 1. The pulley transmission mechanism 3 includes a first pulley 31, a second pulley 32 and a synchronous belt 33. The second pulley 32 is pressed onto the first output shaft 411 of the first motor 41. The first pulley 31 is disposed on the power output mechanism 2. The synchronous belt 33 is transmission-connected with both the first pulley 31 and the second pulley 32. When the first motor 41 is working, the second pulley 32 rotates with the first output shaft 411, thereby driving the synchronous belt 33 and the second pulley 32 to rotate, so that the power output mechanism 2 rotates, thereby achieving the effect that the first motor 41 drives the pulley transmission mechanism 3 to drive the power output mechanism 2 to rotate.

[0077] The diameter of the first pulley 31 is greater than the diameter of the second pulley 32, so that the pulley transmission mechanism 3 is constructed as a transmission reduction structure, achieving the reduction transmission effect of the pulley transmission mechanism 3, thereby reducing the rotation speed of the power output mechanism 2, reducing the risk of the vehicle skidding or drifting due to the steering gear 100 turning too fast, and thereby improving the safety of the vehicle.

[0078] A first connecting portion 51 is provided on the output shaft of the second motor 42, and a second connecting portion 321 is provided on the second pulley 32. The first connecting portion 51 and the second connecting portion 321 are connected through a connecting body 52, so that the output shaft of the second motor 42 and the output shaft of the first motor 41 (i.e., the first output shaft 411) can work synchronously, so that the first motor 41 and the second motor 42 jointly drive the pulley transmission mechanism 3 to drive the power output mechanism 2 to rotate, which is beneficial to output greater torque and power assistance to the power output mechanism 2, so that the steering gear 100 can reliably realize the steering function, and reduce the risk of the steering gear 100 function failing to be realized due to excessive vehicle load. In addition, when any one of the first motor 41 and the second motor 42 fails, the other drive motor 4 can continue to play a driving role, which is beneficial to improve the working reliability of the steering gear 100, thereby improving the safety of vehicle use.

[0079] The connecting body 52 can be constructed as an elastomer so that the connecting body 52 can play the role of buffering, energy absorption, noise reduction, etc., which is beneficial to reducing the vibration of the transmission connection device 5, compensating for the dimensional error between the first connection part 51 and the connecting body 52, and between the connecting body 52 and the second connection part 321, thereby reducing the wear of the first connection part 51 and the second connection part 321, which is beneficial to extending the service life of the transmission connection device 5.

[0080] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0081] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A steering gear (100) for a vehicle, characterized in that: include: Housing (1); A power output mechanism (2), the power output mechanism (2) being rotatably disposed on the housing (1); A pulley transmission mechanism (3), the pulley transmission mechanism (3) is in transmission connection with the power output mechanism (2), and the pulley transmission mechanism (3) is used to drive the power output mechanism (2) to rotate; A plurality of drive motors (4), each of the drive motors (4) is in transmission connection with the pulley transmission mechanism (3), and each of the drive motors (4) is configured to drive the pulley transmission mechanism (3) to drive the power output mechanism (2) to rotate.

2. The steering gear (100) for a vehicle according to claim 1, characterized in that: The pulley transmission mechanism (3) is constructed as a transmission reduction structure.

3. The steering gear (100) for a vehicle according to claim 1 or 2, characterized in that: The pulley transmission mechanism (3) comprises: a first pulley (31), a second pulley (32) and a synchronous belt (33); the first pulley (31) is arranged on the power output mechanism (2); the second pulley (32) is fixedly arranged on a motor output shaft of the driving motor (4); the synchronous belt (33) is sleeved on the first pulley (31) and the second pulley (32); and the motor output shafts of the other part of the driving motor (4) are all in transmission connection with the second pulley (32).

4. The steering gear (100) for a vehicle according to claim 3, characterized in that: The diameter of the first pulley (31) is greater than the diameter of the second pulley (32).

5. The steering gear (100) for a vehicle according to claim 3, characterized in that: Also includes: A transmission connection device (5), wherein the plurality of drive motors (4) include: a first motor (41) and a second motor (42), wherein the second pulley (32) is fixedly mounted on the motor output shaft of the first motor (41), and the transmission connection device (5) is transmission-connected between the motor output shaft of the second motor (42) and the second pulley (32).

6. The steering gear (100) for a vehicle according to claim 5, characterized in that: The transmission connection device (5) comprises: a first connection part (51) and a connection body (52); the second pulley (32) has a second connection part (321); the first connection part (51) is fixed to the motor output shaft of the second motor (42); the connection body (52) is assembled between the first connection part (51) and the second connection part (321) so that the first connection part (51) and the second connection part (321) are fixedly assembled.

7. The steering gear (100) for a vehicle according to claim 6, characterized in that: The connecting body (52) is designed as an elastomer.

8. The steering gear (100) for a vehicle according to claim 6, characterized in that: The first connection part (51) has a plurality of first limiting bosses (511) on one side facing the second connection part (321), and the plurality of first limiting bosses (511) are sequentially spaced along the circumference of the first connection part (51) to form a first assembly gap (512) between any two adjacent first limiting bosses (511), and the second connection part (321) has a plurality of second limiting bosses (322) on one side facing the second connection part (321), and the plurality of second limiting bosses (322) are spaced along the circumference of the second connection part (321). The connector (52) is arranged in sequence and spaced apart to form a second assembly gap (323) between any two adjacent second limiting bosses (322); a plurality of third bosses (521) are formed on the outer peripheral wall of the connector (52); a plurality of first limiting bosses (511) are respectively assembled in the corresponding second assembly gaps (323); a plurality of second limiting bosses (322) are respectively assembled in the corresponding first assembly gaps (512); and a third boss (521) is sandwiched between any two adjacent first limiting bosses (511) and second limiting bosses (322).

9. The steering gear (100) for a vehicle according to claim 5, characterized in that: The first motor (41) and the second motor (42) are arranged opposite to each other, the transmission connection device (5) is located between the first motor (41) and the second motor (42), and the motor output shaft of the first motor (41) and the motor output shaft of the second motor (42) are arranged coaxially.

10. A vehicle, characterized in that: The invention comprises a steering gear (100) for a vehicle according to any one of claims 1 to 9.

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