CN110758554A

CN110758554A - Steering system and automobile

Info

Publication number: CN110758554A
Application number: CN201911180825.5A
Authority: CN
Inventors: 张枫; 陈波; 赵大为; 王秀强; 万海桥; 刘玉锦; 吕健
Original assignee: Anhui Jianghuai Automobile Group Corp
Current assignee: Anhui Jianghuai Automobile Group Corp
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-02-07

Abstract

The invention discloses a steering system and an automobile, wherein the steering system comprises a steering drag link, a steering rocker arm and a tie rod assembly, the steering drag link is provided with a forward and backward movable stroke, the front end of the steering drag link is used for being connected to a steering gear, the steering rocker arm comprises a rocker arm mounting frame, a steering rocker arm body which is rotatably mounted on the rocker arm mounting frame along an up-down axial line, and two connecting arms which are arranged in a protruding mode from the lateral direction of the steering rocker arm body, one of the connecting arms is hinged to the rear end of the steering drag link, the tie rod assembly comprises a tie rod which is arranged in a left-right extending mode, two ends of the tie rod are used for being connected to wheels on the left side and the right side of the automobile, and the tie rod; the steering drag link moves forwards and backwards to drive the tie rod to swing leftwards and rightwards, and the tie rod is used for driving wheels on the left side and the right side of the vehicle to steer synchronously. The vehicle steering is realized more accurately and smoothly.

Description

Steering system and automobile

Technical Field

The invention relates to the technical field of steering systems, in particular to a steering system and an automobile.

Background

The drag link of the passenger car steering system plays a role in transmitting power of a steering gear to a front axle and is an indispensable part in the steering system. The design at present, the front end of drag link links to each other with the steering gear generally, and the rear end of drag link directly links to each other with the front axle bent arm, and present transmission route, the in-process that the front axle is beated from top to bottom along with the suspension can produce the influence through the drag link to the steering gear, produces unexpected steering effect.

Disclosure of Invention

The invention mainly aims to provide a steering system which can be used for synchronously steering wheels on the left side and the right side of a vehicle and realizing the steering of the vehicle more accurately and stably.

To achieve the above object, the present invention provides a steering system including:

the steering drag link is provided with a forward and backward movable stroke, and the front end of the steering drag link is used for being connected to a steering gear;

the steering rocker arm comprises a rocker arm mounting frame, a steering rocker arm body and two connecting arms, wherein the steering rocker arm body is rotatably mounted on the rocker arm mounting frame along an up-down axial line, the two connecting arms are arranged in a protruding mode from the lateral direction of the steering rocker arm body, and one of the connecting arms is hinged to the rear end of the steering drag link; and the number of the first and second groups,

the tie rod assembly comprises a tie rod extending in the left-right direction, two ends of the tie rod are used for being connected to wheels on the left side and the right side of the vehicle, and the tie rod is hinged with the other connecting arm;

the steering drag link moves forwards and backwards to drive the tie rod to swing leftwards and rightwards, and the tie rod is used for driving wheels on the left side and the right side of the vehicle to steer synchronously.

Optionally, upwards from top to bottom, the rocker arm mounting bracket and two the linking arm is crisscross to be set up, one side surface of rocker arm mounting bracket is first installation face, first installation face be used for with chassis skeleton's side surface through threaded connection structure fixed connection.

Optionally, the tie rod assembly further includes two adjusting connecting rods extending in the left-right direction and adjustable in length, and the two adjusting connecting rods are respectively used for being mounted between two ends of the tie rod and two wheels correspondingly located on the left side and the right side.

Optionally, the adjusting link includes:

a connecting pipe; and the number of the first and second groups,

two connecting rods are oppositely arranged along the left direction and the right direction, two ends, close to each other, of the connecting rods are all sleeved in the connecting pipes, two intervals between the connecting rods are adjustable, and two ends, deviating from each other, of the connecting rods are respectively connected to the corresponding wheels and the transverse pull rod.

Optionally, the connecting rod corresponds two outside the connecting tube the connecting rod overlaps respectively at least and is equipped with a clamp for fixed connection connecting tube and two the connecting rod.

Optionally, the tie rod has a connecting end connected to the steering rocker arm and a mounting end opposite to the connecting end, and is oriented left and right upwards;

the steering system further comprises a supporting rocker arm, the supporting rocker arm comprises a supporting mounting frame, a supporting rocker arm body and a first extension arm, the supporting rocker arm body is rotatably mounted along the vertical axis, the first extension arm is laterally and protrusively arranged on the supporting rocker arm body, and the first extension arm is hinged to the mounting end.

Optionally, a second extension arm deviating from the first extension arm is laterally and convexly arranged on the supporting rocker arm body;

the steering system further comprises a steering damper, one end of the steering damper is hinged to the second extension arm, and the other end of the steering damper is fixedly mounted to the chassis framework.

Optionally, upwards from top to bottom, support the mounting bracket first extension arm and the second extension arm is crisscross to be set up, a side surface that supports the mounting bracket is the second installation face, the second installation face with the side surface of chassis skeleton passes through threaded connection structure fixed connection.

The invention also provides an automobile comprising the steering system, wherein the steering system comprises:

Optionally, the automobile further includes:

the chassis framework is provided with two longitudinal beams which are arranged at intervals along the left and right directions; and the number of the first and second groups,

the steering gear is in driving connection with the steering drag link;

the rocker arm mounting rack is fixedly mounted on one of the longitudinal beams.

In the technical scheme of the invention, the two connecting arms are arranged in a protruding way from the side of the steering rocker arm body, one of the connecting arms is hinged and installed at the rear end of the steering drag link, the other connecting arm is hinged and installed at one end of the tie rod, the steering drag link moves back and forth to drive the steering rocker body to rotate along the vertical axis, thereby leading the other connecting arm to swing to drive the transverse pull rod to swing left and right, wherein two ends of the transverse pull rod are used for being connected to wheels on the left side and the right side of the vehicle, thereby realizing synchronous steering of the wheels at the left side and the right side of the vehicle, preventing the undesirable steering effect caused by the influence of the up-and-down jumping of the front axle along with the suspension on the steering gear, meanwhile, the problems of steering weight and clamping stagnation are not easy to occur through the conduction of the transverse pull rod to acting force, and the steering of the vehicle can be realized more accurately and stably.

Drawings

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

FIG. 1 is a schematic perspective view of one embodiment of a steering system provided in the present invention;

FIG. 2 is a perspective view of the steering rocker arm of FIG. 1;

FIG. 3 is a schematic cross-sectional view taken along A-A of FIG. 2;

FIG. 4 is a perspective view of the adjustment linkage of FIG. 1;

FIG. 5 is a perspective view of the support rocker arm of FIG. 1;

fig. 6 is a schematic cross-sectional view taken along line B-B in fig. 5.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Steering drag link	321	Connecting pipe
2	Steering rocker arm	322	Connecting rod
				21	Rocker arm mounting rack	323	Clamp hoop
211	First mounting surface	4	Support rocker arm
				22	Steering rocker arm body	41	Support mounting rack
221	Connecting arm	42	Support rocker body
				3	Tie rod assembly	421a	First extension arm
31	Tie rod	421b	Second extension arm
				32	Adjusting connecting rod	5	Steering damper

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The drag link of the passenger car steering system plays a role in transmitting power of a steering gear to a front axle and is an indispensable part in the steering system. At present, the front end of a drag link is generally connected with a steering gear, the rear end of the drag link is directly connected with a front axle bent arm, and the front axle can influence the steering gear through the drag link in the process of jumping up and down along with a suspension, so that an unexpected steering effect is generated.

In view of this, the invention provides a steering system and an automobile, which can enable the wheels on the left side and the wheels on the right side of the automobile to steer synchronously and realize the steering of the automobile more accurately and stably. The automobile comprises a steering system, and any automobile comprising the steering system belongs to the scheme of the invention, and fig. 1 to 6 are embodiments of the steering system provided by the invention.

Referring to fig. 1, the steering system includes a steering drag link 1, a steering rocker 2 and a tie rod assembly 3, wherein the steering drag link 1 has a forward and backward movement stroke, the front end of the steering drag link 1 is used for connecting to a steering gear, the steering rocker 2 includes a rocker mounting frame 21 and a steering rocker body 22 rotatably mounted on the rocker mounting frame 21 along a vertical axis, and two connecting arms 221 laterally protruding from the steering rocker body 22, one of the connecting arms 221 is hinged to the rear end of the steering drag link 1, the tie rod assembly 3 includes a tie rod 31 extending in a left and right direction, two ends of the tie rod 31 are used for connecting to wheels on the left and right sides of a vehicle, and the tie rod 31 is hinged to the other connecting arm 221; the steering drag link 1 moves back and forth to drive the tie rod 31 to swing left and right, so as to drive wheels on the left and right sides of the vehicle to steer synchronously.

In the technical scheme of the invention, two connecting arms 221 are arranged in a protruding manner from the side direction of the steering rocker arm body 22, one of the connecting arms 221 is hinged and installed at the rear end of the steering drag link 1, the other connecting arm 221 is hinged and installed at one end of the tie rod 31, the steering drag link 1 moves back and forth to drive the steering rocker arm body 22 to rotate along the vertical axis, so that the other connecting arm 221 swings to drive the tie rod 31 to swing along the left and right direction, two ends of the tie rod 31 are used for being connected to wheels at the left and right sides of a vehicle, thereby realizing synchronous steering of the wheels at the left and right sides of the vehicle, preventing an unexpected steering effect caused by the fact that a front axle jumps up and down along with a suspension frame to affect a steering gear, and meanwhile, the problems of steering weight and clamping stagnation are not easy to occur due to the conduction of an acting force, the vehicle steering can be realized more accurately and smoothly.

In the operation process of the steering system, the rocker arm mounting bracket 21 and the two connecting arms 221 may interfere with the chassis frame due to limited spatial layout in the movement process, for this reason, in this embodiment, referring to fig. 2 to 3, the rocker arm mounting bracket 21 and the two connecting arms 221 are staggered along the vertical direction, a side surface of the rocker arm mounting bracket 21 is a first mounting surface 211, and the first mounting surface 211 is used for being fixedly connected with the side surface of the chassis frame through a threaded connection structure. So through first installation face 211 will rocking arm mounting bracket 21 is fixed each other with the side surface of chassis skeleton, promptly rocking arm mounting bracket 21 is located same horizontal plane with the chassis skeleton, rocking arm mounting bracket 21 and two linking arm 221 is crisscross to avoid appearing interfering in the motion process, guarantee steering system work is smooth and easy, and spatial layout is compact simultaneously.

In the test stage, the vehicle will generally be tested through tests to adjust the most suitable steering angle, and for this reason, in this embodiment, the tie rod assembly 3 further includes two adjustable connecting rods 32 extending in the left-right direction and having adjustable lengths, and the two adjustable connecting rods 32 are respectively used to be installed between two ends of the tie rod 31 and two wheels correspondingly located on the left and right sides. Through the adjustment adjust the length of connecting rod 32, change the corner about the vehicle, the matching of the earlier stage of being convenient for sets up.

Specifically, in order to realize that the length of the adjusting link 32 is adjustable, referring to fig. 4, the adjusting link 32 includes a connecting pipe 321 and two connecting rods 322, the two connecting rods 322 are oppositely arranged along the left-right direction, one ends of the two connecting rods 322 close to each other are all sleeved in the connecting pipe 321, the distance between the two connecting rods 322 is adjustable, and one ends of the two connecting rods 322 departing from each other are respectively connected to the corresponding wheel and the corresponding tie rod 31. Both ends opening, two about connecting pipe 321 the connecting rod 322 stretches into respectively from the opening at both ends about in the connecting pipe 321, through adjusting two interval between the connecting rod 322, in order to change adjust the whole length of pole 32, so design simple structure realizes easily.

It should be noted that the adjusting rod 32 can also be configured as a multi-stage telescopic rod to achieve length adjustment, which is not described in detail herein.

Further, in order to prevent the connecting rods 322 from falling off from the connecting tube 321 during the swinging process, in this embodiment, at least one clamp 323 is respectively sleeved outside the connecting tube 321 and corresponding to two connecting rods 322, so as to fixedly connect the connecting tube 321 and two connecting rods 322. Through setting up clamp 323 is in order to guarantee connecting pipe 321 and two connection between connecting rod 322 is firm, will when needing to adjust length clamp 323 loosens, will again behind the length adjustment clamp 323 fastening, simple structure, convenient operation.

The drag link 1 and the pitman arm 2 are both located on the same side of the tie rod 31, and the power transmitted to the steering gear is unbalanced, so that the side of the steering force may be large and the other side may be small, for this reason, in this embodiment, referring to fig. 5 to 6, the tie rod 31 has a connecting end connected to the pitman arm 2 and a mounting end opposite to the connecting end in the left-right direction; the steering system further comprises a supporting rocker arm 4, the supporting rocker arm 4 comprises a supporting mounting frame 41, a supporting rocker arm body 42 which is rotatably mounted along an up-down axis, and a first extension arm 421a which is laterally protruded from the supporting rocker arm body 42, and the first extension arm 421a is hinged to the mounting end. Due to the arrangement, the supporting rocker arm 4 and the steering rocker arm 2 are oppositely arranged in the left-right direction relative to the tie rod 31, the imbalance of stress in the steering parts is avoided, and the steering of the vehicle can be more stably realized.

Further, along with the operation of the vehicle, the wheels bump under the influence of the road surface, so that the steering system rocks, in this embodiment, the supporting rocker arm body 42 is laterally provided with a second extension arm 421b deviating from the first extension arm 421a in a protruding manner, the steering system further includes a steering damper 5, one end of the steering damper 5 is hinged to the second extension arm 421b, and the other end of the steering damper is used for being fixedly mounted to the chassis framework. The steering damper 5 has a positive steering return effect and can also relieve the force fed back to the steering wheel by ground impact. Specifically, in the driving process, the vibration is transmitted to the steering damper 5 along with the second extension arm 421b, and then the vibration is reduced by the steering damper 5, so that the jolt of the steering system in the vehicle running process is reduced, and the vehicle steering can be realized more stably.

In the operation process of the steering system, the supporting and mounting frame 41, the first extension arm 421a, and the second extension arm 421b may interfere with the chassis frame due to limited spatial layout in the operation process, for this reason, in this embodiment, the supporting and mounting frame 41, the first extension arm 421a, and the second extension arm 421b are disposed in a staggered manner along the up-down direction, a side surface of the supporting and mounting frame 41 is a second mounting surface, and the second mounting surface is fixedly connected with a side surface of the chassis frame through a threaded connection structure. So through the first and installation face will support mounting bracket 41 and chassis skeleton's side surface and fix each other, promptly support mounting bracket 41 and chassis skeleton and be located same horizontal plane, support mounting bracket 41 with first extension arm 421a and the crisscross setting of second extension arm 421b to avoid appearing interfering in the motion process, guarantee that the work of a steering system is smooth and easy, spatial layout is compact simultaneously.

In addition, the articulated connection in this embodiment is achieved through a ball and pin joint, which is mature, selectable in size, easy to purchase, and meets requirements.

The invention further provides a passenger car, which comprises the steering system, and the passenger car comprises all the technical characteristics of the steering system, so that the passenger car also has the technical effects brought by all the technical characteristics, and the details are not repeated herein.

Specifically, the automobile further comprises a chassis framework and a steering gear, wherein the chassis framework is provided with two longitudinal beams which are arranged at intervals in the left-right direction; the steering gear is in driving connection with the steering drag link 1, wherein the rocker arm mounting frame 21 is fixedly mounted on one of the longitudinal beams. The steering system is compact in overall structure, a mounting base does not need to be arranged independently, and space is saved.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A steering system, comprising:

2. The steering system according to claim 1, wherein the rocker arm mounting bracket is arranged to intersect with the two connecting arms in an up-down direction, and a side surface of the rocker arm mounting bracket is a first mounting surface for fixedly connecting with a side surface of the chassis frame through a threaded connection structure.

3. The steering system as claimed in claim 1, wherein the tie rod assembly further comprises two adjustable length adjustment links extending in the left-right direction, the two adjustable length adjustment links being respectively adapted to be mounted between two ends of the tie rod and two wheels respectively located on the left and right sides.

4. The steering system as claimed in claim 3, wherein the adjusting link comprises:

a connecting pipe; and the number of the first and second groups,

5. The steering system as claimed in claim 4, wherein at least one clamp is provided around each of two of said connecting rods outside said connecting tube for fixedly connecting said connecting tube and said two connecting rods.

6. The steering system of claim 1, wherein said tie rod has a connecting end connected to said pitman arm and a mounting end opposite said connecting end, in a left-right direction;

7. The steering system as claimed in claim 6, wherein the supporting rocker arm body is laterally protrusively provided with a second extension arm which is deviated from the first extension arm;

8. The steering system according to claim 7, wherein the support mounting bracket, the first extension arm and the second extension arm are arranged in a staggered manner in an up-down direction, and a side surface of the support mounting bracket is a second mounting surface fixedly connected with a side surface of the chassis frame through a threaded connection structure.

9. An automobile characterized by comprising the steering system according to any one of claims 1 to 8.

10. The vehicle of claim 9, further comprising:

the steering gear is in driving connection with the steering drag link;