阅读说明：本技术 一种高强度新能源汽车转向系统 (High-strength new energy automobile steering system ) 是由 王瑞红 张勇 刘建辉 刘小娟 龚一凡 胡延明 杨成云 于 2019-09-30 设计创作，主要内容包括：本发明公开了一种高强度新能源汽车转向系统,涉及到新能源汽车领域,包括方向盘,方向盘的中部固定连接有转向杆,转向杆的一端固定连接有螺纹杆,螺纹杆的外侧螺纹连接有滑块,滑块的一侧中部通过销轴活动连接有第一拉杆,第一拉杆的一端通过销轴活动连接有第一连接板,第一连接板的一侧中部通过销轴活动连接有第二拉杆,第二拉杆的一端通过销轴活动连接有第二连接板,第二连接板的中部固定连接有连接杆,连接杆的两端均活动连接有轮子。本发明通过螺纹杆、滑块、第一拉杆、第一连接板、第二拉杆和第二连接板的配合设置,能够降低转向结构的生产成本,且能够降低转向时因摩擦力消耗的力。(The invention discloses a high-strength new energy automobile steering system, which relates to the field of new energy automobiles and comprises a steering wheel, wherein a steering rod is fixedly connected to the middle of the steering wheel, a threaded rod is fixedly connected to one end of the steering rod, a sliding block is in threaded connection with the outer side of the threaded rod, a first pull rod is movably connected to the middle of one side of the sliding block through a pin shaft, a first connecting plate is movably connected to one end of the first pull rod through a pin shaft, a second pull rod is movably connected to the middle of one side of the first connecting plate through a pin shaft, a second connecting plate is movably connected to one end of the second pull rod through a pin shaft, a connecting rod is fixedly connected to the middle of the second connecting plate, and. According to the steering structure, the threaded rod, the sliding block, the first pull rod, the first connecting plate, the second pull rod and the second connecting plate are arranged in a matched mode, so that the production cost of the steering structure can be reduced, and the force consumed by friction force during steering can be reduced.)

1. The utility model provides a high strength new energy automobile a steering system, includes steering wheel (1), steering column (2), threaded rod (3), its characterized in that: the middle part of the steering wheel (1) is fixedly connected with a steering rod (2), one end of the steering rod (2) is fixedly connected with a threaded rod (3), the outer side of the threaded rod (3) is in threaded connection with a sliding block (4), one side middle part of the sliding block (4) is in movable connection with a first pull rod (5), one end of the first pull rod (5) is in movable connection with a first connecting plate (6), one side middle part of the first connecting plate (6) is in movable connection with a second pull rod (7), one end of the second pull rod (7) is in movable connection with a second connecting plate (8), the middle part of the second connecting plate (8) is connected with a connecting rod (9), two ends of the connecting rod (9) are both in movable connection with wheels (10), the middle part of the connecting rod (9) is provided with a sleeve (11), the middle part of the sleeve (11), the top of dwang (12) is provided with fixed plate (13).

2. The high-strength new energy automobile steering system according to claim 1, characterized in that: one end of the outer side of the threaded rod (3) is connected with a bearing, and the outer side of the bearing is connected with a first fixing pile (14); the bottom end of the first fixing pile (14) is connected with a vehicle body.

3. The high-strength new energy automobile steering system according to claim 1 or 2, characterized in that: the other end of the outer side of the threaded rod (3) is connected with a bearing seat, and the outer side of the bearing seat is connected with a second fixing pile (15); the bottom end of the second fixing pile (15) is connected with a vehicle body.

4. The high-strength new energy automobile steering system according to any one of claims 1 to 3, characterized in that: the middle part of the first connecting plate (6) is connected with one end of a connecting rod (9); the first connecting plate (6) and the second connecting plate (8) are arranged in parallel.

5. The high-strength new energy automobile steering system according to claim 1, characterized in that: the second pull rod (7) and the connecting rod (9) are arranged in parallel; the wheels (10) are provided in two, the two wheels (10) being symmetrical about the connecting rod (9).

6. The high-strength new energy automobile steering system according to claim 1, characterized in that: the inner part of the sleeve (11) is connected with the middle part of the connecting rod (9); and both sides of the fixed plate (13) are connected with the vehicle body.

7. The high-strength new energy automobile steering system according to claim 1, characterized in that: a clamping groove is formed in the top of the rotating rod (12); the inside of the clamping groove is movably connected with the middle part of the fixing plate (13).

8. The high-strength new energy automobile steering system according to claim 1, characterized in that: the first fixing pile (14) and the second fixing pile (15) are fixed on the frame.

Technical Field

The invention relates to the technical field of steering of new energy automobiles, in particular to a high-strength new energy automobile steering system.

Background

A steering device for a vehicle, which is the most important component in a steering system of an automobile. Its function is to increase the force transmitted by the steering wheel to the steering gear and to change the direction of force transmission. Have important influence on the aspects of ensuring the driving safety, the stability, the riding comfort and the like. In order to achieve steering of a vehicle, the following technical solutions are commonly used in the prior art:

chinese patent application CN201420010698.0 discloses a novel tie rod steering system, as shown in fig. 1, comprising a left steering wheel hub 1, a right steering wheel hub 2, a left steering cross bar 3, a right steering cross bar 4, a left steering knuckle 6, a right steering knuckle 7, a steering axle 5 and a steering tie rod 9, wherein one end of the steering tie rod 9 is connected with an automobile steering gear, the other end of the steering tie rod 9 is connected with the right steering cross bar 4, the right steering cross bar 4 is hinged with one end of the right steering knuckle 7, and the other end of the right steering knuckle 7 is fixed on the right steering wheel hub 2; the left steering cross rod 3 is hinged with one end of a left steering knuckle 6, and the other end of the left steering knuckle 6 is fixed on the left steering wheel hub 1; be connected with steering axle 5 between left side steering horizontal pole 3 and the right side steering horizontal pole 4, articulated right wheel hub axle 8 in the middle of steering axle 5, right wheel hub axle 8 other end is fixed at right wheel hub 2 center, the left end of left side steering horizontal pole 3 all is equipped with threaded connection part with the right-hand member of right side steering horizontal pole 4, and left side steering horizontal pole 3 equally divide into two sections with right side steering horizontal pole 4 promptly, and two sections are connected through nut 10, nut 10 is regular hexagon for the cross section, can adjust the length of left side steering horizontal pole 3 and right side steering horizontal pole 4 through rotating nut 10 to adjust the wheel toe-in.

Chinese patent application CN201220607583.0 is an automobile steering device, which comprises a steering housing 1, a sector steering gear 2, a steering shaft 3, a steering gear shaft 4 and a steering rack 5, wherein the steering rack 5 is disposed on the steering shaft 3, the steering shaft 3 is provided with a concave portion 6, and the steering rack 5 is disposed on the concave portion 6.

However, since the new energy vehicle has sufficient power, fast response speed and high strength requirement on the steering system, the steering device in the prior art cannot meet the strength requirement of the new energy vehicle on the steering device due to the rigidity of the structural layout and the overall strength.

Therefore, the present invention is directed to a high-strength new energy vehicle steering system, which solves the above problems.

Disclosure of Invention

The invention aims to provide a high-strength new energy automobile steering system to solve the problems of complex structure and inconvenient operation in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a high strength new energy automobile a steering system, includes the steering wheel, the middle part fixedly connected with steering column of steering wheel, the one end of steering column is connected with the threaded rod, the outside threaded connection of threaded rod has the slider, there is first pull rod at one side middle part of slider through round pin axle swing joint, the one end of first pull rod has first connecting plate through round pin axle swing joint, there is the second pull rod at one side middle part of first connecting plate through round pin axle swing joint, the one end of second pull rod has the second connecting plate through round pin axle swing joint, the middle part of second connecting plate is connected with the connecting rod, the equal swing joint in both ends of connecting rod has the wheel, the middle part of connecting rod is provided with the sleeve pipe, sheathed tube middle part is connected with the dwang, the top of dwang.

Optionally, one end of the outer side of the threaded rod is connected with a bearing, and the outer side of the bearing is connected with a first fixing pile; the bottom end of the first fixing pile is connected with a vehicle body.

Optionally, the other end of the outer side of the threaded rod is connected with a bearing seat, and the outer side of the bearing seat is connected with a second fixing pile; and the bottom end of the second fixing pile is connected with a vehicle body.

Optionally, the middle part of the first connecting plate is connected with one end of a connecting rod; the first connecting plate and the second connecting plate are arranged in parallel.

Optionally, the second pull rod is arranged in parallel with the connecting rod; the wheels are provided with two, two of the wheels are symmetrical about the connecting rod.

Optionally, the inner part of the sleeve is fixedly connected with the middle part of the connecting rod; and both sides of the fixed plate are fixedly connected with the vehicle body.

Optionally, a clamping groove is formed in the top of the rotating rod; the inside of draw-in groove and the middle part swing joint of fixed plate.

Optionally, the first fixing pile and the second fixing pile are both fixed on the frame.

Optionally, the high-strength new energy automobile steering system further comprises a controller and a motor, the steering wheel is connected with the controller, and the controller is connected with the motor. The motor drives the threaded rod to rotate.

Optionally, an angle sensor is arranged between the steering wheel and the controller, the angle sensor detects a rotation angle a of the steering wheel and transmits the angle a to the controller, and the controller controls the motor to drive the threaded rod to rotate by a corresponding angle according to angle data.

Optionally, the first connecting plate is linked with the left wheel to control the steering of the left wheel; the second connecting plate is linked with the right wheel to control the steering of the second connecting plate. And the first connecting plate and the second connecting plate realize linkage through the second pull rod.

Optionally, the threaded rod and the sliding block are matched through transmission threads, and the transmission threads are rectangular threads or trapezoidal threads.

Optionally, in order to improve the strength of the steering system, the materials of the steering rod, the threaded rod, the first connecting plate, the second connecting plate, the connecting rod, the sleeve, the rotating rod and the like are all made of aluminum alloy or high-strength steel.

Optionally, in order to ensure the transmission precision and realize accurate steering, the fit clearance δ between the threaded rod and the sliding block is 0.03-0.08 mm; the hardness Y1 of the matching surface of the threaded matching is 54-62 HRC; particularly, δ · Y1 is 1.65 or more and 4.92 or less between the fitting clearance δ and the hardness Y of the fitting surface.

Optionally, while satisfying the high strength of the transmission system, the feedback to the excitation of external impact and the like is realized, and the safety and comfort are improved, and the internal hardness Y2 of the steering rod, the threaded rod, the first pull rod, the first connecting plate, the second pull rod, the second connecting plate, the connecting rod and the rotating rod is less than the external hardness Y3 thereof, and particularly, Y2 ═ α · δ^1/2·Y3；

Wherein alpha is a hardness factor and has a value range of 2.4-4.5.

Optionally, the tensile strength Q of the steering rod, the threaded rod, the first tie rod, the first connecting plate, the second tie rod, the second connecting plate, the connecting rod, and the rotating rod is 585-:

Y3/Y2＝μ·δ^1/2·Q^1/3；

wherein mu is a relation coefficient and the value range is 0.25-0.52.

Compared with the prior art, the invention has the technical effects and advantages that:

1. according to the high-strength new energy automobile steering system, the threaded rod, the sliding block, the first pull rod, the first connecting plate, the second pull rod and the second connecting plate are arranged in a matched mode, so that the production cost of the steering structure can be reduced, and the force consumed by friction force during steering can be reduced.

2. According to the high-strength new energy automobile steering system, the connecting rod can be conveniently rotated through the sleeve, the rotating rod and the fixing plate, so that the flexibility of wheels can be improved, and the threaded rod can be prevented from being separated from an automobile body through the first fixing pile and the second fixing pile, so that the reliability of the system is improved.

3. According to the high-strength new energy automobile steering system, the relation met by the matching clearance delta and the hardness Y of the matching surface is set, so that the transmission precision is ensured, and accurate steering is realized.

4. According to the high-strength new energy automobile steering system, the size relation, particularly the accurate relation formula, between the internal hardness Y2 and the external hardness Y3 is set, so that the high strength of a transmission system is met, the feedback of excitation such as external impact is realized, and the safety and the comfort are improved.

5. According to the high-strength new energy automobile steering system, the relation among the tensile strength Q, the fit clearance delta, the internal hardness Y2 and the external hardness Y3 is set, so that the strength of a transformation system is improved better, the feedback of excitation such as external impact is realized, and the safety and the comfort are improved.

Drawings

Fig. 1 is a schematic view of a tie rod steering system according to a prior art.

Fig. 2 is a schematic view of a steering gear of a vehicle in the prior art.

Fig. 3 is a schematic front view of a high-strength new energy automobile steering system.

Fig. 4 is a schematic front sectional view of a high-strength new energy vehicle steering system according to the present invention.

Fig. 5 is a schematic front view of the high-strength new energy automobile steering system casing structure of the invention.

In the figure: 1. a steering wheel; 2. a steering lever; 3. a threaded rod; 4. a slider; 5. a first pull rod; 6. a first connecting plate; 7. a second pull rod; 8. a second connecting plate; 9. a connecting rod; 10. a wheel; 11. a sleeve; 12. rotating the rod; 13. a fixing plate; 14. a first spud pile; 15. and a second spud pile.

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.

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

In the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected or detachably connected; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

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