Steering drive device and vehicle

Abstract

The present application discloses a steering drive device and a vehicle, and relates to the technical field of steering equipment. The steering drive device of the present application includes a first bracket, a second bracket, a first rotating member, a first encoder, a second rotating member, a steering motor, a second encoder, a potentiometer and a control module. The first rotating member is rotatably arranged on the first bracket; the first encoder is arranged on the first bracket and is transmission-connected to the first rotating member; the second rotating member is rotatably arranged on the second bracket; the steering motor is transmission-connected to the second rotating member; the second encoder is transmission-connected to the steering motor; and the potentiometer is transmission-connected to the second rotating member. The control module is used to receive signals from the first encoder, the second encoder and the potentiometer, and control the operation of the steering motor. Therefore, the present application realizes electric steering drive by setting the first encoder, the second encoder and the potentiometer, thereby making the steering operation easier, the control more precise, and improving the steering safety.

Description

Technical Field

[0001] The present application relates to the technical field of steering equipment, and in particular to a steering drive device and a vehicle. Background Art

[0002] A steering wheel is a wheel-shaped device commonly used in vehicles such as cars and ships. When the vehicle is moving, the driver controls the direction of the vehicle by turning the steering wheel.

[0003] However, in the prior art, the steering wheel is generally a mechanical steering, for example, the steering wheel controls the steering of the vehicle head through a rack and pinion steering gear and a recirculating ball steering gear, which is cumbersome to operate and has poor performance, and may cause safety accidents due to low steering accuracy. Summary of the Invention

[0004] The purpose of the present application is to provide a steering drive device and a vehicle, which can make the steering operation easier, the control more precise, and improve the steering safety.

[0005] The embodiment of the present application is implemented as follows:

[0006] A steering drive device includes a first bracket, a second bracket, a first rotating member, a first encoder, a second rotating member, a steering motor, a second encoder and a potentiometer, wherein the first rotating member is rotatably disposed on the first bracket; the first encoder is disposed on the first bracket and is transmission-connected to the first rotating member; the second rotating member is rotatably disposed on the second bracket; the steering motor is disposed on the second bracket and is transmission-connected to the second rotating member for driving the second rotating member to rotate; the second encoder is disposed on the second bracket and is transmission-connected to the steering motor; the potentiometer is disposed on the second bracket and is transmission-connected to the second rotating member.

[0007] The steering drive device includes a control module, which is electrically connected to the first encoder, the second encoder, the potentiometer and the steering motor, and is used to receive signals from the first encoder, the second encoder and the potentiometer, and control the operation of the steering motor.

[0008] During one operation, the first rotating member rotates, which in turn drives the first encoder. The first encoder then outputs a signal to the control module, which activates the steering motor, which in turn drives the second rotating member. During this operation, the second encoder and potentiometer assist in positioning, monitoring the steering motor's output in real time and providing a negative feedback signal to the control module, which adjusts the steering motor's output, thereby improving the steering accuracy of the second rotating member.

[0009] In an embodiment, the first bracket and the second bracket can be integral or separate, and the first bracket and the second bracket are fixed together by bolts, welding, etc., or they can be two independent components spaced apart. The second rotating member can be a steering wheel or other component. The first rotating member can be a steering wheel, an operating lever, or other component. The first rotating member can serve as a direction control structure for vehicles such as cars, ships, and airplanes. The first rotating member can also be provided on a remote control as a tool for controlling the direction of travel of remotely operated devices such as remote robots, drones, and remote-controlled aircraft. The first rotating member can also be provided directly on the robot as a steering control structure for the robot. The first encoder and the second encoder can be absolute encoders or incremental encoders.

[0010] Therefore, the present application realizes electric steering drive by setting a first encoder, a second encoder and a potentiometer, thereby replacing the mechanical steering in the prior art, which can make the steering operation easier, the control more precise, and improve the steering safety.

[0011] In one embodiment, the control module includes a transceiver, a processor, a driver, and a power supply.

[0012] During operation, the control module receives information from the first encoder, second encoder, and potentiometer via a transceiver and transmits it to a processor. The control module processes the information fed back by the transceiver via the processor and controls the steering motor via a driver. The power source can be a battery or an external power supply, and the driver can be a microcontroller unit (MCU).

[0013] In one embodiment, the steering drive device includes a first bearing, a first mounting hole is provided on the first bracket, the first bearing is disposed in the first mounting hole, and the first rotating member is rotatably disposed on the first bracket through the first bearing.

[0014] The provision of the first bearing can reduce the friction coefficient during the movement of the first rotating member and ensure the rotation accuracy of the first rotating member.

[0015] In one embodiment, the first rotating member includes a steering wheel and a first rotating shaft, the first rotating shaft is fixedly connected to the steering wheel, and the first rotating shaft is rotatably provided on the first bracket via the first bearing.

[0016] The steering wheel is a wheel-shaped structure, and the arrangement of the steering wheel allows the operator to save effort when rotating the first rotation axis. Components such as rubber covers and sponge covers can be arranged on the steering wheel to increase friction for easier control.

[0017] In one embodiment, the steering drive device includes a damper, and the damper is disposed on the first rotating shaft.

[0018] The setting of the damper can not only reduce vibration and dissipate energy, but also improve the operator's operating feel and speed up the response speed.

[0019] In one embodiment, the steering drive device includes a reducer, a first gear and a second gear, the reducer having an input end, a first output end and a second output end; the first gear is rotatably provided on the reducer and is transmission-connected to the second output end; the second gear is rotatably provided on the second bracket, the second gear is engaged with the first gear, and is transmission-connected to the second rotating member for driving the second rotating member to rotate; wherein, the steering motor is transmission-connected to the input end, and the first encoder is transmission-connected to the first output end.

[0020] During one operation, the steering motor rotates, receiving input from the reducer's input terminal and outputting power simultaneously from the first and second output terminals. The first output terminal drives the second encoder to rotate, while the second output terminal drives the first gear to rotate, which in turn drives the second rotating member through the second gear.

[0021] Among them, the reducer is a single-input dual-output reducer with a compact structure and precise transmission. The input end, the first output end and the second output end face three different directions, thereby changing the transmission direction.

[0022] In one embodiment, the steering drive device includes a third bracket, a second rotating shaft and a third gear, the third bracket is fixed to the second bracket, and a third mounting hole is provided on the third bracket; the second rotating shaft is passed through the third mounting hole; the third gear is provided on the second rotating shaft and meshes with the second gear; wherein the potentiometer is transmission-connected to the second rotating shaft.

[0023] Because the first gear meshes simultaneously with the second and third gears, both gears are driven by the first gear to rotate. The third gear drives the potentiometer via the second rotating shaft, and the second gear drives the second rotating member. Through the transmission between the first, second, and third gears, the steering motor simultaneously drives the second encoder, the second rotating member, and the potentiometer, resulting in high transmission efficiency and accuracy.

[0024] In one embodiment, the pitch circle diameter of the second gear is greater than the pitch circle diameter of the first gear, and the pitch circle diameter of the first gear is greater than the pitch circle diameter of the third gear.

[0025] With this arrangement, the first gear drives the second gear, that is, the steering motor to the second rotating member is a deceleration movement; the first gear drives the third gear, that is, the steering motor to the potentiometer is a speed increase movement, thereby making the steering control more precise.

[0026] In one embodiment, the steering drive device includes a second bearing, the second bearing having a second bearing outer ring and a second bearing inner ring; wherein, a second mounting hole is provided on the second bracket, the second bearing is arranged at the second mounting hole, the second bearing outer ring is fixedly connected to the second bracket, and the second bearing inner ring is fixedly connected to the second gear and the second rotating member.

[0027] Because the second gear, the second bearing inner ring, and the second rotating member are fixed, and the second bearing outer ring is fixed to the second bracket, when the steering motor rotates, the second gear, the second bearing inner ring, and the second rotating member can rotate synchronously about the axis of the second gear. The connection between the second gear, the second bearing inner ring, and the second rotating member, and between the second bearing outer ring and the second bracket can be bolted, pinned, or the like.

[0028] In one embodiment, the second rotating member includes a steering wheel and a wheel bracket, the steering wheel is fixedly connected to the wheel bracket, and the wheel bracket is fixed to the inner ring of the second bearing.

[0029] Since the second gear, the second bearing inner ring, the direction wheel and the wheel bracket are all fixed together, the second gear, the second bearing inner ring, the direction wheel and the wheel bracket can rotate synchronously around the axis direction of the second gear.

[0030] A vehicle comprises a steering drive device and wheels, wherein the steering drive device is the above-mentioned steering drive device; the wheels are connected to the second rotating member.

[0031] Since the above-mentioned steering drive device has the above-mentioned technical effects, the vehicle equipped with the steering drive device also has the same technical effects. When the first rotating member is controlled to rotate, the second rotating member rotates, and the angle of the wheel is offset, thereby changing the direction of the vehicle's front and the direction of travel of the vehicle.

[0032] The beneficial effects of this application compared with the prior art are:

[0033] The present application realizes electric steering drive by setting a first encoder, a second encoder and a potentiometer, thereby replacing the mechanical steering in the prior art, making the steering operation easier, the control more precise and improving the steering safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 This is a schematic structural diagram of a steering drive device according to an embodiment of the present application;

[0036] Figure 2 This is a partial structural diagram of a steering drive device according to an embodiment of the present application;

[0037] Figure 3 This is an exploded view of a portion of the structure of a steering drive device according to an embodiment of the present application;

[0038] Figure 4 This is an exploded view of a portion of the structure of a steering drive device according to one embodiment of the present application.

[0039] Icons: 100 - Steering drive device; 1 - First bracket; 11 - First mounting hole; 12 - First bearing; 13 - Damper; 2 - Second bracket; 21 - Second mounting hole; 22 - Second bearing; 22a - Second bearing outer ring; 22b - Second bearing inner ring; 23 - First bolt; 24 - Second bolt; 3 - First rotating member; 31 - Steering wheel; 32 - First rotating shaft; 4 - First encoder; 5 - Second rotating member; 51 - Steering wheel; 52 -wheel bracket; 53-water pipe; 6-steering motor; 61-reducer; 61a-input end; 61b-first output end; 61c-second output end; 62-first gear; 63-second gear; 64-third gear; 65-shock absorber pad; 66-first retaining ring; 71-second encoder; 72-potentiometer; 8-third bracket; 81-third mounting hole; 82-first coupling; 83-second rotating shaft; 84-second retaining ring; 9-control module. DETAILED DESCRIPTION

[0040] The terms "first", "second", "third", etc. are only used to distinguish and describe, and do not indicate the order of arrangement, nor can they be understood as indicating or implying relative importance.

[0041] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0042] In the description of this application, it should be noted that the terms "inside", "outside", "left", "right", "up", "down", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on this application.

[0043] In the description of this application, unless otherwise clearly specified and limited, the terms "set", "install", "connected" and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection between the internal parts of two elements.

[0044] The technical solution of this application will be clearly and completely described below with reference to the accompanying drawings.

[0045] Please refer to Figure 1 , which is a schematic structural diagram of a steering drive device 100 shown in an embodiment of the present application. A steering drive device 100 includes a first bracket 1, a second bracket 2, a first rotating member 3, a first encoder 4, a second rotating member 5, a steering motor 6, a second encoder 71 and a potentiometer 72. The first rotating member 3 is rotatably arranged on the first bracket 1 around its own axis; the first encoder 4 is arranged on the first bracket 1 and is transmission-connected to the first rotating member 3; the second rotating member 5 is rotatably arranged on the second bracket 2; the steering motor 6 is arranged on the second bracket 2 and is transmission-connected to the second rotating member 5 for driving the second rotating member 5 to rotate; the second encoder 71 is arranged on the second bracket 2 and is transmission-connected to the steering motor 6; the potentiometer 72 is arranged on the second bracket 2 and is transmission-connected to the second rotating member 5.

[0046] The steering drive device 100 includes a control module 9, which is electrically connected to the first encoder 4, the second encoder 71, the potentiometer 72 and the steering motor 6, and is used to receive signals from the first encoder 4, the second encoder 71 and the potentiometer 72, and control the operation of the steering motor 6.

[0047] During one operation, the first rotating member 3 rotates, driving the first encoder 4 to rotate. The first encoder 4 outputs a signal to the control module 9, which activates the steering motor 6, which then drives the second rotating member 5 to rotate. During this operation, the second encoder 71 and potentiometer 72 assist in positioning, detecting the output of the steering motor 6 in real time and providing a negative feedback signal to the control module 9 to adjust the output of the steering motor 6, thereby improving the steering accuracy of the second rotating member 5.

[0048] In one embodiment, the first bracket 1 and the second bracket 2 can be integral or separate, and the first bracket 1 and the second bracket 2 are fixed together by bolts, welding, or the like, or can be two separate, spaced-apart components. The second rotating member 5 can be a steering wheel 51 or other component. The first rotating member 3 can be a steering wheel, an operating lever, or other component. The first rotating member 3 can also be mounted on a remote control as a tool for controlling the direction of travel of a remotely operated device such as a remote robot, drone, or remote-controlled aircraft. The first rotating member 3 can also be mounted directly on a robot as a steering control structure for the robot. The first encoder 4 and the second encoder 71 can be absolute encoders or incremental encoders.

[0049] Therefore, this embodiment realizes electric steering drive by providing the first encoder 4, the second encoder 71 and the potentiometer 72, thereby replacing the mechanical steering in the prior art, making the steering operation easier, the control more precise, and improving the steering safety.

[0050] In one embodiment, the steering drive device 100 is used in a vehicle, which also includes wheels connected to the second rotating member 5. When the first rotating member 3 is controlled to rotate, the second rotating member 5 rotates, causing the angle of the wheel to shift, thereby changing the direction of the vehicle's front end and the vehicle's driving direction.

[0051] In one embodiment, the control module 9 includes a transceiver, a processor, a driver, and a power supply. The power supply can be a battery or an external power supply. The driver can be a microcontroller unit (MCU). During operation, the control module 9 receives information collected by the first encoder 4, the second encoder 71, and the potentiometer 72 via the transceiver and transmits the information to the processor. The control module 9 processes the information fed back by the transceiver via the processor and controls the steering motor 6 via the driver.

[0052] Please refer to Figure 2 , which is a partial structural diagram of a steering drive device 100 according to an embodiment of the present application. The first rotating member 3 includes a steering wheel 31 and a first rotating shaft 32 fixedly connected to each other. The steering wheel 31 is a wheel-shaped structure. Components such as rubber covers and sponge covers can be provided on the steering wheel 31 to increase friction and facilitate control.

[0053] The first bracket 1 is provided with a first through-hole mounting hole 11. The steering drive device 100 includes a first bearing 12, which is mounted within the first mounting hole 11 through an interference fit or other means. The first rotating shaft 32 is rotatably mounted on the first bracket 1 via the first bearing 12. The provision of the first bearing 12 reduces the friction coefficient during the movement of the first rotating member 3 and ensures the rotational accuracy of the first rotating member 3.

[0054] The steering drive device 100 includes a damper 13, which is provided on the first rotating shaft 32 and fixed to the first bracket 1. By providing the damper 13, this embodiment can reduce vibration and dissipate energy, and can also improve the operator's operating feel and speed up the response speed.

[0055] Please refer to Figure 3 , which is an exploded view of a portion of the structure of a steering drive device 100 shown in an embodiment of the present application. The steering drive device 100 includes a reducer 61, a first gear 62, and a second gear 63. The reducer 61 is a reduction transmission device consisting of a gear transmission, a worm transmission, or a gear-worm transmission enclosed in a rigid housing. In this embodiment, the reducer 61 is a single-input, dual-output reducer having an input end 61a, a first output end 61b, and a second output end 61c. The input end 61a, the first output end 61b, and the second output end 61c are oriented in three different directions, thereby changing the transmission direction. The first output end 61b and the second output end 61c are located on the same straight line, with the input end 61a perpendicular to the first output end 61b.

[0056] The steering motor 6 is in transmission connection with the input end 61a; the first output end 61b is in transmission connection with the first encoder 4; the second output end 61c is in transmission connection with the first gear 62, and the first gear 62 is rotatably arranged on the reducer 61 around its own axis, and the first gear 62 is fixedly mounted on the second output end 61c by means of a key connection, interference fit, etc.

[0057] The second gear 63 is rotatably mounted on the second bracket 2 around its own axis. The second gear 63 is engaged with the first gear 62 and is in transmission connection with the second rotating member 5 . The second gear 63 is used to drive the second rotating member 5 to rotate.

[0058] The steering drive device 100 includes a third bracket 8, a second rotating shaft 83 and a third gear 64. The third bracket 8 is fixed to the second bracket 2 by means of bolt connection or the like. A third mounting hole 81 is provided on the third bracket 8, and the third mounting hole 81 is a through hole. The second rotating shaft 83 is passed through the third mounting hole 81. The third gear 64 is fixedly mounted on the second rotating shaft 83 by means of key connection, interference fit or the like, and meshes with the second gear 63. Among them, the potentiometer 72 is transmission-connected to the second rotating shaft 83 through the first coupling 82.

[0059] The steering drive device 100 includes a second bearing 22, which has a second bearing outer ring 22a and a second bearing inner ring 22b; wherein, a second mounting hole 21 is opened on the second bracket 2, and the second mounting hole 21 is a through hole. The second bearing 22 is installed at the second mounting hole 21, and the second bearing outer ring 22a is fixedly connected to the second bracket 2 by multiple first bolts 23, and the second bearing inner ring 22b is fixedly connected to the second gear 63 and the second rotating member 5 by second bolts 24.

[0060] The second rotating member 5 includes a direction wheel 51 and a wheel bracket 52 . The direction wheel 51 is fixedly connected to the wheel bracket 52 , and the wheel bracket 52 is fixed to the second bearing inner ring 22 b .

[0061] During operation, the steering motor 6 rotates, receiving input from the reducer's input terminal 61a and outputting output simultaneously from the first and second output terminals 61b and 61c. The first output terminal 61b drives the second encoder 71, while the second output terminal 61c drives the first gear 62. Because the first gear 62 simultaneously meshes with the second gear 63 and the third gear 64, both the second and third gears 63 and 64 are driven by the first gear 62 and rotate accordingly. The third gear 64 drives the potentiometer 72 via the second rotating shaft 83. Because the second gear 63, the second bearing inner race 22b, the steering wheel 51, and the wheel bracket 52 are all fixed together, they can rotate synchronously about the axis of the second gear 63.

[0062] In this embodiment, the pitch circle diameter of the second gear 63 is larger than the pitch circle diameter of the first gear 62, and the pitch circle diameter of the first gear 62 is larger than the pitch circle diameter of the third gear 64. Therefore, the first gear 62 drives the second gear 63, i.e., the steering motor 6 to the steering wheel 51 is decelerated; while the first gear 62 drives the third gear 64, i.e., the steering motor 6 to the potentiometer 72 is accelerated, thereby enabling more precise steering control.

[0063] Please refer to Figure 4 , which is an exploded view of a portion of the steering drive device 100 according to one embodiment of the present application. A first retaining ring 66 is embedded in the second output end 61c of the reducer 61. The first retaining ring 66 abuts against the first gear 62 to limit the movement of the first gear 62. A second retaining ring 84 is embedded in the second rotating shaft 83. The second retaining ring 84 abuts against the third gear 64 to limit the movement of the third gear 64.

[0064] The thickness of the second bearing outer ring 22a is smaller than that of the second bearing inner ring 22b. A multi-layer annular shock-absorbing pad 65 is provided between the second bearing outer ring 22a and the wheel bracket 52 to reduce vibration.

[0065] The wheel bracket 52 may be a hollow structure surrounded by a plurality of metal plates. When the steering drive device 100 is applied to a vehicle, a water pipe 53 of the vehicle may be placed in the wheel bracket 52 .

[0066] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A steering drive device, characterized in that: include: a first bracket and a second bracket; a first rotating member rotatably disposed on the first bracket; a first encoder, disposed on the first bracket and transmission-connected to the first rotating member; a second rotating member, rotatably disposed on the second bracket; a steering motor, provided on the second bracket and in transmission connection with the second rotating member, for driving the second rotating member to rotate; A second encoder is provided on the second bracket and is transmission-connected to the steering motor; a potentiometer, disposed on the second bracket and transmission-connected to the second rotating member; as well as a control module electrically connected to the first encoder, the second encoder, the potentiometer, and the steering motor, configured to receive signals from the first encoder, the second encoder, and the potentiometer, and control the operation of the steering motor; wherein the control module controls the start of the steering motor based on the output signal of the first encoder; during this process, the second encoder and the potentiometer are used to assist in positioning, detect the output of the steering motor in real time, and provide a negative feedback signal to the control module to adjust the output of the steering motor; Wherein, the steering drive device further includes: A reducer having an input end, a first output end, and a second output end; A first gear is rotatably mounted on the reducer and is in transmission connection with the second output end; and a second gear rotatably disposed on the second bracket, the second gear meshing with the first gear and being in transmission connection with the second rotating member, for driving the second rotating member to rotate; Wherein, the steering motor is in transmission connection with the input end, and the second encoder is in transmission connection with the first output end; A third bracket is fixed to the second bracket, and a third mounting hole is provided on the third bracket; A second rotating shaft is inserted into the third mounting hole; and a third gear, disposed on the second rotating shaft and meshing with the second gear; Wherein, the potentiometer is transmission-connected to the second rotating shaft; The pitch circle diameter of the second gear is larger than the pitch circle diameter of the first gear, and the pitch circle diameter of the first gear is larger than the pitch circle diameter of the third gear; The steering drive device comprises: A second bearing having a second bearing outer ring and a second bearing inner ring; The second bracket is provided with a second mounting hole, the second bearing is provided at the second mounting hole, the outer ring of the second bearing is fixedly connected to the second bracket, and the inner ring of the second bearing is fixedly connected to the second gear and the second rotating member.

2. The steering drive device according to claim 1, characterized in that: include: A first bearing, a first mounting hole is provided on the first bracket, the first bearing is arranged in the first mounting hole, and the first rotating member is rotatably arranged on the first bracket through the first bearing.

3. The steering drive device according to claim 2, characterized in that: The first rotating member includes a steering wheel and a first rotating shaft, the first rotating shaft is fixedly connected to the steering wheel, and the first rotating shaft is rotatably provided on the first bracket through the first bearing.

4. The steering drive device according to claim 3, characterized in that: include: The damper is arranged on the first rotating shaft.

5. The steering drive device according to claim 1, characterized in that: The second rotating member includes a direction wheel and a wheel bracket. The direction wheel is fixedly connected to the wheel bracket, and the wheel bracket is fixed to the inner ring of the second bearing.

6. A vehicle, characterized in that: include: A steering drive device, which is the steering drive device according to any one of claims 1 to 5; as well as The wheel is connected to the second rotating member.

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