CN212401343U

CN212401343U - Inner and outer wheel corner distribution device

Info

Publication number: CN212401343U
Application number: CN202021127778.6U
Authority: CN
Inventors: 李岳
Original assignee: Shanghai Zhiyu Power Technology Co ltd
Current assignee: Ackermann Matrix Technology Shanghai Co ltd
Priority date: 2020-06-17
Filing date: 2020-06-17
Publication date: 2021-01-26
Anticipated expiration: 2030-06-17

Abstract

An inner and outer wheel angle distribution device in the technical field of automobiles comprises a steering motor, an angle distribution gear set, a steering drive gear set, a central shaft bevel gear, a floating shaft and a transmission flexible shaft joint; the corner distribution gear set, the steering drive gear set and the floating shaft are all arranged in the shell assembly; the corner distribution gear set comprises a motor gear, a reduction gear and a carrier gear; the steering driving gear set comprises an inner gear ring, a planetary gear carrier, a planetary gear set, a sun gear and a supporting bearing. The utility model discloses a center pin is coaxial with the steering column, by corner distribution gear train, turn to drive gear group, turn to the motor and constitute, through initial setting value + offset value (or just or anti-reverse, reverse for the compensation, the syntropy is for cutting down) realize interior foreign steamer poor: the steering wheel driving force and the steering driving gear set provide an initial set value for the system; the steering motor and the corner distribution gear set provide a corner compensation value for the system; the two interact with each other to realize the desired difference between the inner wheel and the outer wheel. The utility model relates to a rationally, be applicable to automobile steering system's optimal design.

Description

Inner and outer wheel corner distribution device

Technical Field

The utility model relates to a steering system in the technical field of automobiles, especially an interior foreign steamer corner distributor that can realize the poor output of linear interior external wheel angle.

Background

The existing steering system is realized based on the Ackerman corner principle, and the motion track of each wheel must completely accord with the natural motion track of the automobile in the driving process (straight driving and turning driving), so that the pure rolling and no slippage between the tire and the ground are ensured. Most manufacturers realize the theoretical difference rotation angle of the inner wheel and the outer wheel based on a trapezoidal or rectangular steering system. The large-corner steering cannot be realized due to actual design and structural reasons, so that the maneuverability of the whole vehicle with an overlarge turning radius is limited. In the design process of the whole vehicle platform, the universality of the whole vehicle platform is limited due to the Ackerman theory corner based on the wheel track relationship of the wheel base.

Disclosure of Invention

The utility model discloses to prior art's not enough, provide an inside and outside wheel corner distribution device, the utility model discloses can ignore the change of wheel base and wheel base, realize the required ackermann corner of platform through drive gear's matching, because of no steering linkage a steering system, so can realize in the steering angle that 90 turning radii reduce the linear ackermann angle more than 40%, solve the full all terrain vehicle that trapezoidal or rectangle structure reason leads to and pass through the restricted and traditional steering angle restriction of performance.

The utility model is realized by the following technical proposal, the utility model comprises a left shell, a right shell, an upper cover plate, a steering motor, a switching distribution gear set, a steering driving gear set, a central shaft bevel gear, a floating shaft and a transmission flexible shaft joint, wherein the left shell, the right shell and the upper cover plate form a shell assembly of the distribution device; the corner distribution gear set, the steering drive gear set and the floating shaft are all arranged in the shell assembly; the corner distribution gear set comprises a motor gear, a reduction gear and a carrier gear; the steering driving gear set comprises an inner gear ring, a planetary gear carrier, a planetary gear set, a sun gear and a supporting bearing; the steering motor is fixedly connected with the outer side of the left shell through a bracket, and the motor gear is connected with the steering motor through a motor shaft; the reduction gear is in a coaxial large and small gear structure, the large gear is meshed with the motor gear, and the small gear is meshed with the carrier gear; the carrier gear is of a coaxial double-gear structure, and the two gears are of the same structure and are respectively meshed with the outer gears of the two inner gear rings; the supporting bearing and the sun gear are both arranged in a planetary gear carrier, and the planetary gear carrier is arranged in the internal gear ring; the planetary gear set is arranged in a planetary gear groove on the planetary gear carrier, the outer side of the planetary gear set is meshed with an inner side gear of the inner gear ring, and the inner side of the planetary gear set is meshed with an outer side gear of the sun gear; one end of the transmission flexible shaft joint is connected with the sun wheel through a spline, and the other end of the transmission flexible shaft joint extends out of the shell assembly; the axes of the flexible transmission shaft joint, the floating shaft, the inner gear ring, the planet gear carrier and the sun gear are the same; the upper end of the central shaft extends out of the upper cover plate, and the lower end of the central shaft penetrates through the floating shaft and is arranged in the shell assembly; the central shaft bevel gear is in interference fit with the central shaft and meshed with a gear at the side end of the planet carrier.

Further, the utility model discloses in, have the installation base on the casing assembly, the direction and the rotational speed that turn to the motor are adjustable.

Furthermore, in the present invention, the upper end of the central shaft is coaxially connected to the steering column of the steering wheel.

Furthermore, in the present invention, the flexible transmission shaft joint is connected to the chassis steering module.

The utility model discloses abandon traditional a steering system design (steering engine + turn to assist drive device + turn to the pull rod), with an all new interior foreign steamer corner distributor (intelligence or mechanical type) + transmission flexible axle + cornea piece, realize the interior outer wheel corner of actual required, and the theoretical output value curve that interior foreign steamer corner of actual required and steering mechanism provided can accomplish basic coincidence, because the interior foreign steamer difference that this interior foreign steamer corner distributor can realize is linear relation, be different from traditional turn to pull rod formula steering system (nonlinear relation). Meanwhile, the steering angle of the wheels can be made to be +/-90 degrees, but the traditional steering system can only be limited to +/-40 degrees. This interior outer round of wheel angular distribution device center shaft is coaxial with the steering column, comprises corner distribution gear train, turns to drive gear group, steering motor, realizes interior outer wheel poor through initial set value + offset value (or positive or negative, reverse for the compensation, the syntropy is for cutting down): the steering wheel driving force and the steering driving gear set provide an initial set value for the system; the steering motor and the corner distribution gear set provide a corner compensation value for the system; the two interact with each other to realize the desired difference between the inner wheel and the outer wheel. Meanwhile, the system is matched with a chassis steering module, the steering module is used for transmitting torque output by a transmission flexible shaft to a gear set, and a fixing plate on a wheel assembly is stirred to rotate (a driving gear is fixed on a vehicle body connecting plate, and a driven gear is fixed on a wheel fixing plate) through transmission of a gear, so that wheels are driven to rotate to reach a rotation angle required by theory. This system can be equipped with the helping hand motor, makes to control more laborsaving nimble.

Compared with the prior art, the utility model discloses have following beneficial effect and do: firstly, linear inner and outer wheel angle difference output can be realized, and the control performance of the whole vehicle is better; secondly, the turning angle of the inner wheel and the outer wheel is +/-90 degrees, the turning radius is reduced by more than 40 percent, and the maneuverability of the whole vehicle is enhanced; thirdly, the method is not limited by the Ackerman corner theory of a trapezoidal or rectangular steering system any more, and the wheelbase and wheelbase ratio is not limited, so that the universality of vehicle parts is better realized; fourthly, the operation and control are labor-saving, flexible and high in reliability.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

fig. 3 is a front view of the internal structure of the present invention;

FIG. 4 is a schematic structural view of section A-A in FIG. 3;

FIG. 5 is a schematic view of the explosion structure of the components of the present invention;

FIG. 6 is an enlarged partial view of the left end of FIG. 5;

FIG. 7 is an enlarged view of a portion of the middle of FIG. 5;

FIG. 8 is an enlarged partial view of the right end of FIG. 5;

FIG. 9 is an enlarged partial view of the upper end of FIG. 5;

wherein: 1. the steering motor comprises a steering motor body, 2, a motor shaft, 3, a motor gear, 4, a shell, 5, a right shell, 6, an upper cover plate, 7, a reduction gear, 8, a carrier gear, 9, a central shaft, 10, a central shaft bevel gear, 11, a floating shaft, 12, a planet gear carrier, 13, a planet gear set, 14, a sun gear, 15, a support bearing, 16, a left transmission flexible shaft joint, 17, a right transmission flexible shaft joint, 18, an oil seal, 19, a planet gear groove, 20 and an inner gear ring.

Detailed Description

The embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the embodiments of the present invention are based on the technical solution of the present invention and provide detailed embodiments and specific operation processes, but the scope of the present invention is not limited to the following embodiments.

Examples

Fig. 1 to 9 show a specific embodiment, the utility model comprises a steering motor 1, a motor shaft 2, a motor gear 3, a left housing 4, a right housing 5, an upper cover plate 6, a reduction gear 7, a carrier gear 8, a central shaft 9, a central shaft bevel gear 10, a floating shaft 11, a planet gear carrier 12, a planetary gear set 13, a sun gear 14, a support bearing 15, a left transmission flexible shaft joint 16, a right transmission flexible shaft joint 17, an oil seal 18, a planetary gear groove 19 and an inner gear ring 20, wherein the left housing 4, the right housing 5 and the upper cover plate 6 form a housing assembly of a distribution device; the corner distribution gear set, the steering drive gear set and the floating shaft 11 are all arranged in the shell assembly; the corner distribution gear set comprises a motor gear 3, a reduction gear 7 and a carrier gear 8; the steering drive gear set comprises an inner gear ring 20, a planet gear carrier 12, a planet gear set 13, a sun gear 14 and a support bearing 15; the steering motor 1 is fixedly connected with the outer side of the left shell 4 through a bracket, and the motor gear 3 is connected with the steering motor 1 through a motor shaft 2; the reduction gear 7 is of a coaxial big gear structure and a small gear structure, the big gear is meshed with the motor gear 3, and the small gear is meshed with the carrier gear 8; the carrier gear 8 is of a coaxial double-gear structure, and the two gears are of the same structure and are respectively meshed with the outer gears of the two inner gear rings 20; the supporting bearing 15 and the sun gear 14 are both arranged in the planet gear carrier 12, and the planet gear carrier 12 is arranged in the internal gear ring 20; the planetary gear set 13 is arranged in a planetary gear groove 19 on the planetary gear carrier 12, the outer side of the planetary gear set 13 is meshed with the inner side gear of the inner gear ring 20, and the inner side of the planetary gear set 13 is meshed with the outer side gear of the sun gear 14; the transmission flexible shaft joints are respectively arranged at two sides of the floating shaft and are respectively a left transmission flexible shaft joint 16 and a right transmission flexible shaft joint 17; one end of the transmission flexible shaft joint is of an external spline structure and is connected with an internal spline inside the sun wheel 14, and the other end of the transmission flexible shaft joint extends out of the shell assembly; the axes of the left transmission flexible shaft joint 16, the right transmission flexible shaft joint 17, the floating shaft 11, the inner gear ring 20, the planet gear carrier 12 and the sun gear 14 are the same; the upper end of the central shaft 9 extends out of the upper cover plate 6, and the lower end of the central shaft passes through the floating shaft 11 and then is arranged in the shell assembly; the central shaft bevel gear 10 is fitted on the central shaft 9 by interference and meshed with a gear at the side end of the planet carrier 12.

The utility model discloses in, left end transmission flexible axle connects 16 and transmits output torque for the left wheel steering module, and right-hand member transmission flexible axle connects 17 and transmits output torque for the right wheel steering module. In the corner distribution gear set, an intelligent steering motor 1 provides a certain rotating speed, and torque is provided to planetary gear carriers 12 on the left side and the right side through a group of reduction gears 7 and a carrier gear 8 mechanism; because the provided steering is consistent, the rotating speed of the planet carrier 12 on one side is increased, the rotating speed of the planet carrier 12 on one side is reduced, and finally the aim is to compensate the outer wheel steering angle and weaken the inner wheel steering angle, so that the difference of the inner wheel steering angle and the outer wheel steering angle is realized. In the steering drive gear set, the equal rotation angles of the inner wheel and the outer wheel in the same direction are realized by rotating a steering wheel; a steering wheel is rotated, central shaft bevel teeth 10 fixed on a central shaft 9 synchronously rotate, the central shaft bevel teeth 10 drive a left planetary gear carrier 12 and a right planetary gear carrier 12 to rotate, and then the splines of a left sun gear 14 and a right sun gear 14 are taken as output points through a planetary gear set 13 respectively and are output to a steering module (the steering module is integrated in a chassis integrated module) through a transmission flexible shaft; from the central axis bevel 10 to the planet carrier 12 and then to the planetary gear set 13 and sun gear 14, the speed is reduced and then increased to achieve an output with a total speed ratio of 1: 1.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.

Claims

1. An inner and outer wheel corner distribution device comprises a left shell, a right shell and an upper cover plate, wherein the left shell, the right shell and the upper cover plate form a shell assembly of the distribution device; the steering gear is characterized by further comprising a steering motor, a corner distribution gear set, a steering driving gear set, a central shaft bevel gear, a floating shaft and a transmission flexible shaft joint;

the corner distribution gear set, the steering drive gear set and the floating shaft are all arranged in the shell assembly;

the corner distribution gear set comprises a motor gear, a reduction gear and a carrier gear;

the steering driving gear set comprises an inner gear ring, a planetary gear carrier, a planetary gear set, a sun gear and a supporting bearing;

the steering motor is fixedly connected with the outer side of the left shell through a bracket, and the motor gear is connected with the steering motor through a motor shaft;

the reduction gear is of a coaxial large gear structure and a coaxial small gear structure, the large gear is meshed with the motor gear, and the small gear is meshed with the carrier gear;

the carrier gear is of a coaxial double-gear structure, and the two gears are of the same structure and are respectively meshed with the outer gears of the two inner gear rings;

the supporting bearing and the sun gear are both arranged in a planetary gear carrier, and the planetary gear carrier is arranged in the inner gear ring;

the planetary gear set is arranged in a planetary gear groove on the planetary gear carrier, the outer side of the planetary gear set is meshed with an inner side gear of the inner gear ring, and the inner side of the planetary gear set is meshed with an outer side gear of the sun gear;

the transmission flexible shaft joints are respectively arranged on two sides of the floating shaft, one end of each transmission flexible shaft joint is connected with the sun wheel through a spline, and the other end of each transmission flexible shaft joint extends out of the shell assembly;

the axes of the flexible transmission shaft joint, the floating shaft, the inner gear ring, the planet gear carrier and the sun gear are the same;

the upper end of the central shaft extends out of the upper cover plate, and the lower end of the central shaft penetrates through the floating shaft and is arranged in the shell assembly;

the central shaft bevel gear is in interference fit with the central shaft and is meshed with a gear at the side end of the planet carrier.

2. The inner and outer wheel corner distribution apparatus of claim 1, wherein said housing assembly has a mounting base, and said steering motor is adjustable in direction and speed.

3. The inner and outer wheel corner fitting assembly of claim 1, wherein the upper end of said central shaft is coaxially connected to the steering column of the steering wheel.

4. The inner and outer wheel corner distribution apparatus of claim 1, wherein the flexible drive shaft joint is connected to the chassis steering module.