A steering structure with an electric power assisted steering gear

Abstract

The application discloses a steering structure with an electronic power-assisted steering wheel, which comprises the following: an electric motor seat is fixedly connected to the outer surface of the steering wheel; a direction power-assisted motor is fixedly connected to the outer surface of the electric motor seat; a gear rack reversing seat is fixedly connected to the outer surface of the steering wheel; a steering rod is rotatably connected to the inside of the gear rack reversing seat; and a tooth cylinder is arranged on the upper surface of the steering rod. The steering structure can realize the disconnection between the steering wheel and the steering wheel in the automatic driving mode of the vehicle, so as to avoid the situation that the steering wheel is hit during automatic driving. The disconnection between the disconnecting rod and the steering rod is designed to be disconnectable, and the collision hitting rod and the wedge-shaped collision block are arranged, so that the disconnecting rod and the steering rod are deformed due to the mutual collision of the collision hitting rod and the wedge-shaped collision block when the vehicle collides, the hard connection with the steering column is changed, and the safety of the driver is effectively protected.

Description

Technical Field

[0001] This invention relates to the field of steering gear technology, and in particular to a steering structure with electronic power steering. Background Technology

[0002] In the field of steering gear technology, with the rapid development of the automotive industry, the demand for vehicle intelligence and safety is increasing. Traditional steering structures are gradually revealing limitations when facing new driving scenarios and requirements. In autonomous driving mode, traditional steering structures cannot effectively disconnect the steering wheel from the steering gear. When the vehicle is in autonomous driving mode, if the autonomous driving system performs a steering operation in an emergency, the steering wheel may turn accordingly, easily causing the driver and passengers to lose control and potentially injuring them, severely impacting the driving experience and safety. Existing steering structures are mostly rigid connections, meaning that in the event of a collision, the impact force is directly transmitted to the steering wheel and the driver. Due to the lack of effective buffering and disconnection mechanisms, this rigid connection significantly increases the risk of injury to the driver, making it difficult to provide reliable safety protection at the moment of impact and failing to meet the high standards of collision safety performance required by modern automobiles.

[0003] In summary, existing steering mechanisms have significant shortcomings in terms of autonomous driving adaptability and collision safety, necessitating a novel steering mechanism with electronic power steering to address these technical challenges and improve overall vehicle performance and safety. Therefore, this solution proposes a steering mechanism with electronic power steering. Summary of the Invention

[0004] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a steering structure with an electronically assisted steering system. This structure utilizes a support and a servo motor-controlled disconnect rod mounted on the support, allowing for vertical movement. By controlling the disconnection and connection between the disconnect rod and the steering column, the steering structure enables the steering wheel to disconnect from the steering gear in autonomous driving mode, preventing steering wheel kickback during automatic driving. The disconnectable design between the disconnect rod and the steering column, along with the inclusion of a collision lever and a wedge-shaped collision block, ensures that in the event of a collision, the collision lever and wedge-shaped collision block collide, causing the disconnect rod to deform and altering the rigid connection with the steering column, effectively protecting the driver's safety.

[0005] The present invention also provides a steering structure having the above-mentioned electronic power steering gear, comprising: a steering gear, a motor mount fixedly connected to the outer surface of the steering gear, a power steering motor fixedly connected to the outer surface of the motor mount, a rack and pinion reversing seat fixedly connected to the outer surface of the steering gear, a steering rod rotatably connected inside the rack and pinion reversing seat, and a gear cylinder provided on the upper surface of the steering rod;

[0006] A support is provided, with a sliding groove fixedly connected to its outer surface. A movable base is slidably connected inside the sliding groove. A servo motor is fixedly connected to the outer surface of the movable base. An abutment is fixedly connected to the outer surface of the support. A telescopic push rod is fixedly connected to the outer surface of the abutment. The output end of the telescopic push rod is fixedly connected to the movable base. A sliding sleeve is fixedly connected to the outer surface of the support. A disconnect rod is slidably connected inside the sliding sleeve. A sleeve tooth is fixedly connected to the lower end face of the disconnect rod. The sleeve tooth meshes with a gear cylinder. A collision rod is fixedly connected to the outer surface of the gear and rack reversing seat. A wedge-shaped collision block is fixedly connected to the outer surface of the support. A helical rack is provided on the outer surface of the disconnect rod. The output end of the servo motor meshes with the helical rack through a worm gear.

[0007] According to the present invention, a steering structure with electronic power steering is provided, wherein a telescopic universal joint is fixedly connected to the upper end face of the disconnect rod, and a steering linkage is fixedly connected to one end of the telescopic universal joint.

[0008] According to the present invention, a steering structure with electronic power steering is provided, wherein a connecting column is fixedly connected to the outer surface of the support, and the support is connected to the vehicle body through the connecting column.

[0009] According to the present invention, a steering structure with electronic power steering is provided, wherein the front end of the sleeve tooth is provided with a guide slope.

[0010] According to the present invention, a steering structure with an electronic power steering system is provided, wherein a steering rack is provided inside the steering system, a steering tie rod is movably connected to the left side of the steering system, the steering tie rod is connected to the steering rack, the output end of the power steering motor is connected to the steering rack, and the steering rod is connected to the steering rack.

[0011] According to the present invention, a steering structure with an electronic power steering system is provided, wherein a second steering tie rod is movably connected to the right side of the steering system, and the second steering tie rod is connected to the steering rack.

[0012] According to the present invention, a steering structure with an electronic power steering system is provided, wherein a protective cover is fixedly connected to the left side surface of the steering system, and the protective cover is fixedly connected to the outer surface of the steering tie rod.

[0013] According to the present invention, a steering structure with an electronic power steering system is provided, wherein a second protective cover is fixedly connected to the right side surface of the steering system, and the second protective cover is fixedly connected to the outer surface of the steering tie rod.

[0014] According to the present invention, a steering structure with an electronic power steering system is provided, wherein a mounting bracket is fixedly connected to the outer surface of the steering system, and the steering system is connected to the vehicle body through the mounting bracket.

[0015] According to the present invention, in a steering structure with electronic power steering, the upper surface of the impact lever is an inclined surface, and the impact lever abuts against the wedge-shaped impact block.

[0016] Compared with the prior art, the steering structure with electronic power steering of the present invention, by setting a support and a disconnecting rod that can move up and down by servo motor control mounted on the support, can realize the steering structure to disconnect the steering wheel and steering gear in the vehicle's automatic driving mode by controlling the disconnecting rod and the steering rod, thus avoiding the situation of the steering wheel hitting the hand when the vehicle is in automatic driving mode.

[0017] Compared with the prior art, the steering structure with electronic power steering of the present invention, through the disconnectable design between the disconnect rod and the steering rod, and through the setting of the collision strike rod and the wedge-shaped collision block, causes the disconnect rod to fail to connect with the steering rod and deform when a vehicle collision occurs, thereby changing the rigid connection with the steering column and effectively protecting the safety of the driver. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1 This is an overall structural diagram of a steering structure with electronic power steering according to the present invention;

[0020] Figure 2 This is a side view of a steering structure with electronic power steering according to the present invention;

[0021] Figure 3 This is a rear view of a steering structure with electronic power steering according to the present invention;

[0022] Figure 4 This is a bottom view of a steering structure with electronic power steering according to the present invention;

[0023] Figure 5 This is a schematic diagram of the disconnect rod structure of a steering structure with electronic power steering according to the present invention.

[0024] Legend:

[0025] 1. Steering gear; 2. Motor mount; 3. Power steering motor; 4. Mounting bracket; 5. Protective cover one; 6. Steering tie rod one; 7. Protective cover two; 8. Steering tie rod two; 9. Rack and pinion reversing seat; 10. Steering rod; 11. Disconnecting rod; 12. Support; 13. Telescopic universal joint; 14. Steering linkage; 15. Connecting column; 16. Sliding sleeve; 17. Helical rack; 18. Gear sleeve; 19. Servo motor; 20. Movable base; 21. Wedge-shaped collision block; 22. Collision rod; 23. Gear cylinder; 24. Guide slope; 25. Slide groove; 26. Telescopic push rod; 27. Abutment seat. Detailed Implementation

[0026] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0027] Reference Figure 1-5 This invention discloses a steering structure with an electronically assisted steering system, comprising: a steering mechanism 1, a motor mount 2 fixedly connected to the outer surface of the steering mechanism 1, a steering assist motor 3 fixedly connected to the outer surface of the motor mount 2, a rack and pinion reversing seat 9 fixedly connected to the outer surface of the steering mechanism 1, a steering rod 10 rotatably connected inside the rack and pinion reversing seat 9, and a gear cylinder 23 on the upper surface of the steering rod 10; a support 12, a sliding groove 25 fixedly connected to the outer surface of the support 12, a movable base 20 slidably connected inside the sliding groove 25, a servo motor 19 fixedly connected to the outer surface of the movable base 20, an abutment seat 27 fixedly connected to the outer surface of the support 12, a telescopic push rod 26 fixedly connected to the outer surface of the abutment seat 27, the output end of the telescopic push rod 26 fixedly connected to the movable base 20, a sliding sleeve 16 fixedly connected to the outer surface of the support 12, a disconnect rod 11 slidably connected inside the sliding sleeve 16, a sleeve tooth 18 fixedly connected to the lower end face of the disconnect rod 11, and a guide slope 24 at the front end of the sleeve tooth 18.

[0028] The gear sleeve 18 meshes with the gear cylinder 23. A collision rod 22 is fixedly connected to the outer surface of the gear rack reversing seat 9. A wedge-shaped collision block 21 is fixedly connected to the outer surface of the support 12. A helical rack 17 is provided on the outer surface of the disconnect rod 11. The output end of the servo motor 19 meshes with the helical rack 17 via a worm gear. A telescopic universal joint 13 is fixedly connected to the upper end face of the disconnect rod 11, and a directional connecting rod 14 is fixedly connected to one end of the telescopic universal joint 13. A connecting post 15 is fixedly connected to the outer surface of the support 12, and the support 12 is connected to the vehicle body via the connecting post 15. The upper surface of the collision rod 22 is an inclined surface, and the collision rod 22 abuts against the wedge-shaped collision block 21.

[0029] The steering gear 1 has a steering rack inside. A steering tie rod 6 is movably connected to the left side of the steering gear 1, and the steering rack of the steering tie rod 6 is connected to it. The output end of the power steering motor 3 is connected to the steering rack, and the steering lever 10 is connected to the steering rack. A steering tie rod 8 is movably connected to the right side of the steering gear 1, and the steering rack of the steering tie rod 8 is connected to it. A cover 5 is fixedly connected to the left surface of the steering gear 1, and the cover 5 is fixedly connected to the outer surface of the steering tie rod 6. A cover 7 is fixedly connected to the right surface of the steering gear 1, and the cover 7 is fixedly connected to the outer surface of the steering tie rod 8. A mounting bracket 4 is fixedly connected to the outer surface of the steering gear 1, and the steering gear 1 is connected to the vehicle body via the mounting bracket 4.

[0030] Working principle: The steering structure operates under various conditions. In different driving scenarios, the components cooperate to achieve their respective functions. The specific principle is as follows:

[0031] Normal driving conditions: When the vehicle is driving normally, the power steering motor 3 is in operation. When the driver turns the steering wheel, the torque is transmitted to the steering rack inside the steering gear 1 via the steering rod 10. The power steering motor 3 outputs a corresponding assist torque based on the vehicle speed and steering wheel rotation angle, which is superimposed on the torque applied by the driver to jointly drive the steering rack. The steering rack drives the steering tie rod 6 and the steering tie rod 8 to move, thereby turning the wheels and realizing the vehicle steering operation. At this time, the servo motor 19 is not activated, and the output end of the servo motor 19 is separated from the disconnect rod 11 by the action of the telescopic push rod 26. The sleeve teeth 18 of the disconnect rod 11 are engaged with the gear cylinder 23 on the steering rod 10 to ensure the integrity of the mechanical connection of the steering system.

[0032] Autonomous driving mode: After the vehicle switches to autonomous driving mode, the vehicle control system sends a command to the servo motor 19. The servo motor 19 starts, and the worm gear at its output end meshes with the helical rack 17 on the outer surface of the disconnect rod 11, driving the disconnect rod 11 to slide upward within the sliding sleeve 16. The sleeve teeth 18 at the lower end of the disconnect rod 11 gradually disengage from the gear cylinder 23, thereby cutting off the mechanical connection between the steering wheel and the steering gear 1, preventing the steering wheel from hitting the hands during autonomous driving. At the same time, the vehicle's autonomous driving system directly controls the power steering motor 3 to work, precisely driving the steering rack of the steering gear 1 according to a preset path or sensor feedback information, realizing the vehicle's autonomous driving steering.

[0033] Collision Scenario: At the moment of a collision, the collision lever 22 displaces along with the steering gear 1 and collides with the wedge-shaped collision block 21 on the support 12. The impact force generated by the collision causes the disconnect lever 11 to be subjected to an upward force, resulting in the failure of the connection between the sleeve 18 and the gear cylinder 23, or even deformation. Even if the disconnect lever 11 and the gear cylinder 23 have already disengaged in the automatic driving mode, the impact force generated by the collision will further ensure that the disconnect lever 11 and the steering lever 10 are no longer in a rigid connection state, changing the rigid connection structure with the steering column, thereby preventing the collision impact force from being directly transmitted to the driver through the steering system, effectively protecting the safety of the driver.

[0034] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A steering structure with electronic power steering, characterized in that, include: Steering gear (1), a motor mount (2) is fixedly connected to the outer surface of the steering gear (1), a power steering motor (3) is fixedly connected to the outer surface of the motor mount (2), a gear rack reversing seat (9) is fixedly connected to the outer surface of the steering gear (1), a steering rod (10) is rotatably connected inside the gear rack reversing seat (9), and a gear cylinder (23) is provided on the upper surface of the steering rod (10); A support (12) is provided, with a slide groove (25) fixedly connected to its outer surface. A movable base (20) is slidably connected inside the slide groove (25). A servo motor (19) is fixedly connected to the outer surface of the movable base (20). An abutment seat (27) is fixedly connected to the outer surface of the support (12). A telescopic push rod (26) is fixedly connected to the outer surface of the abutment seat (27). The output end of the telescopic push rod (26) is fixedly connected to the movable base (20). A sliding sleeve (1) is fixedly connected to the outer surface of the support (12). 6) The sliding sleeve (16) is internally connected to a disconnect rod (11), and the lower end face of the disconnect rod (11) is fixedly connected to a sleeve tooth (18). The sleeve tooth (18) meshes with the gear cylinder (23). The outer surface of the gear rack reversing seat (9) is fixedly connected to a collision rod (22). The outer surface of the support (12) is fixedly connected to a wedge-shaped collision block (21). The outer surface of the disconnect rod (11) is provided with a helical rack (17). The output end of the servo motor (19) meshes with the helical rack (17) through a worm gear.

2. The steering structure with electronic power steering according to claim 1, characterized in that, The upper end face of the disconnect rod (11) is fixedly connected to a telescopic universal joint (13), and one end of the telescopic universal joint (13) is fixedly connected to a directional connecting rod (14).

3. The steering structure with electronic power steering according to claim 1, characterized in that, The outer surface of the support (12) is fixedly connected to a connecting column (15), and the support (12) is connected to the vehicle body through the connecting column (15).

4. The steering structure with electronic power steering according to claim 1, characterized in that, The front end of the sleeve tooth (18) is provided with a guide slope (24).

5. A steering structure with electronic power steering according to claim 1, characterized in that, The steering gear (1) is equipped with a steering rack inside. A steering tie rod (6) is movably connected to the left side of the steering gear (1). The steering tie rod (6) is connected to the steering rack. The output end of the steering assist motor (3) is connected to the steering rack. The steering rod (10) is connected to the steering rack.

6. A steering structure with electronic power steering according to claim 5, characterized in that, The steering gear (1) is movably connected to the right side of the steering tie rod (8), which is connected to the steering rack.

7. A steering structure with electronic power steering according to claim 5, characterized in that, A protective cover (5) is fixedly connected to the left side surface of the steering gear (1), and the protective cover (5) is fixedly connected to the outer surface of the steering tie rod (6).

8. A steering structure with electronic power steering according to claim 6, characterized in that, The right side surface of the steering gear (1) is fixedly connected to a second guard (7), and the second guard (7) is fixedly connected to the outer surface of the second steering tie rod (8).

9. A steering structure with electronic power steering according to claim 6, characterized in that, The outer surface of the steering gear (1) is fixedly connected to a mounting bracket (4), and the steering gear (1) is connected to the vehicle body through the mounting bracket (4).

10. A steering structure with electronic power steering according to claim 6, characterized in that, The upper surface of the impact rod (22) is an inclined surface, and the impact rod (22) abuts against the wedge-shaped impact block (21).

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