A telescopic steering column assembly

Abstract

This utility model relates to the field of automotive technology and discloses a limit-adjustable steering column assembly, including a lower mounting bracket, an upper shaft column welded component, a universal joint assembly, a first spline, and an interface. An assist mechanism is fixedly connected to the upper end of the lower mounting bracket. A limit mechanism is provided at one end of the assist mechanism, and a stabilizing mechanism is provided on one side of the outer wall of the assist mechanism. The assist mechanism includes an electric power steering head, an electronic control unit is provided on one side of the outer wall of the electric power steering head, and an adjusting motor is provided on another side of the outer wall of the electric power steering head. In this utility model, the device senses the torque signal and vehicle speed signal transmitted from the steering wheel through the upper shaft welded component via a sensing component in the electronic control unit, thereby driving the adjusting motor to output auxiliary torque. With the assistance of the adjusting motor, the electric power steering head drives the universal joint assembly to move, and the universal joint assembly ultimately drives the wheel to rotate, thus making steering operation lighter and more precise, improving the practicality of the device.

Description

Technical Field

[0001] This utility model relates to the field of automotive technology, and in particular to a limit-adjustable steering column assembly. Background Technology

[0002] The adjustable steering column assembly is a key component of the automotive steering system, mainly composed of the column, universal joint, and adjustment mechanism. Its core function is to adjust the position (height and angle) of the steering wheel mechanically or electrically, and limit the maximum displacement of the steering shaft to ensure driving comfort and safety. It features a collision energy absorption design, collapsing to cushion the impact and protect the driver in an accident. It is widely used in passenger cars and commercial vehicles, adapting to the steering requirements of different models.

[0003] However, traditional limit-adjustment steering column assemblies lack active self-centering functionality, which can easily lead to insufficient or excessive self-centering, especially during large-angle steering or low-friction road conditions, affecting driving safety. Secondly, the splines at the universal joint connections at both ends of most devices are prone to loosening under long-term high-frequency vibration, and the traditional hexagonal bolts have limited tightening effect. In addition, during steering, the bearings inside the upper column of the traditional device may move due to vibration or load, thus affecting the rotational stability of the internal components of the bearing.

[0004] Therefore, those skilled in the art have provided a limit-adjustable steering column assembly to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies and provide a limit-adjustable steering column assembly. The device uses a sensing component within the electronic control unit to sense torque and vehicle speed signals transmitted from the steering wheel via the upper shaft welded component. This drives the adjustment motor to output auxiliary torque, which in turn drives the universal joint assembly to move under the assistance of the adjustment motor. The universal joint assembly then drives the wheels to rotate, making steering operation easier and more precise, thus improving the practicality of the device.

[0006] To achieve the above objectives, this utility model provides a limit-adjustable steering column assembly, including a lower mounting bracket, an upper shaft column welded component, a universal joint assembly, a first spline, and an interface. An assist mechanism is fixedly connected to the upper end of the lower mounting bracket, a limit mechanism is provided at one end of the assist mechanism, and a stabilizing mechanism is provided on one side of the outer wall of the assist mechanism.

[0007] The assist mechanism includes an electric assist head, an electronic control unit is provided on one side of the outer wall of the electric assist head, an adjusting motor is provided on one side of the outer wall of the electric assist head, a plurality of first flange bolts are threaded to one side end face of the electric assist head, a plurality of second flange bolts are threaded to one side end face of the electric assist head, an upper shaft welded part is fixedly connected to one end of the electric assist head, the limiting mechanism includes a second spline, a serrated anti-slip flange nut is threaded to the outer wall of the second spline, the stabilizing mechanism includes a deep groove ball bearing, and a shaft elastic retaining ring is provided at one end of the outer wall of the upper shaft welded part;

[0008] Through the above technical solution, the device senses the torque and vehicle speed signals transmitted from the steering wheel through the upper shaft welded component via the sensing components in the electronic control unit. This drives the adjustment motor to output auxiliary torque. With the assistance of the adjustment motor, the electric power steering head drives the universal joint assembly to move, and the universal joint assembly finally drives the wheel to rotate, thus making the steering operation lighter and more precise, improving the practicality of the device. The device uses a sawtooth anti-slip flange nut. The sawtooth texture on the lower side of the flange embeds into the outer wall of the upper shaft column welded component when tightened, forming a mechanical interlock to resist high-frequency vibration of the steering system, preventing the second spline from easily loosening, thus improving the practicality of the device. The device uses a deep groove ball bearing installed between the upper shaft column and the upper shaft column welded component to bear radial loads and slight axial loads, ensuring the stable rotation of the upper shaft column welded component. The axle elastic retaining ring is used to limit the axial displacement of the deep groove ball bearing and other rotating components, preventing them from moving due to vibration or load during steering, improving the operational stability of the device, and thus improving its practicality.

[0009] Furthermore, one end of the assist mechanism is threadedly connected to a universal joint assembly, one end of the universal joint assembly is fixedly connected to a first spline, and multiple interfaces are opened on one side end face of the electronic control unit;

[0010] Through the above technical solution, the universal joint assembly is connected to the car tire and is used to transmit the torque after the auxiliary torque is increased by the electric power steering head, so that the car tire can turn smoothly.

[0011] Furthermore, one side of the outer wall of the upper shaft welded part is fixedly connected to one side of the inner wall of the deep groove ball bearing, and one end of the upper shaft welded part is fixedly connected to a second spline;

[0012] With the above technical solution, the deep groove ball bearing is installed between the upper shaft column and the upper shaft column welded part, bearing radial load and slight axial load, ensuring stable rotation of the upper shaft column welded part, while the second spline follows the rotation of the upper shaft column welded part.

[0013] Furthermore, the number of bolts on the first flange is greater than the number of bolts on the second flange;

[0014] Through the above technical solution, this setting enables the electric motor head and other components connected to it to have sufficient support.

[0015] Furthermore, the electronic control unit is electrically connected to the regulating motor, and the electronic control unit is electrically connected to the electric assist head;

[0016] Through the above technical solution, the sensing components in the electronic control unit sense the torque signal and vehicle speed signal transmitted from the steering wheel through the upper shaft welding part, and then drive the adjustment motor to output auxiliary torque.

[0017] Furthermore, the output end of the regulating motor is engaged with one end of the electric booster head;

[0018] The above technical solution adjusts the auxiliary torque output of the motor to drive the electric power steering head to move the universal joint assembly, which in turn drives the wheel to rotate, making steering operation easier and more precise.

[0019] This utility model has the following beneficial effects:

[0020] 1. The present invention proposes a limit adjustment steering column assembly. The device senses the torque signal and vehicle speed signal transmitted from the steering wheel through the upper shaft welded part by the sensing component in the electronic control unit, and then drives the adjustment motor to output auxiliary torque. Under the assistance of the adjustment motor, the electric power steering head drives the universal joint assembly to move, and the universal joint assembly finally drives the wheel to rotate, thereby making the steering operation lighter and more precise, and improving the practicality of the device.

[0021] 2. The present invention proposes a limit adjustment steering column assembly. The device uses the serrated texture on the lower side of the serrated anti-slip flange nut to embed into the outer wall of the upper shaft column welded part to form a mechanical interlock when tightened, resisting the high-frequency vibration of the steering system, so that the second spline will not easily loosen, thus improving the practicality of the device.

[0022] 3. The present invention proposes a limit adjustment steering column assembly. The device installs a deep groove ball bearing between the upper shaft column and the upper shaft column welded part to bear radial load and slight axial load, ensuring stable rotation of the upper shaft column welded part. The shaft elastic retaining ring is used to limit the axial displacement of the deep groove ball bearing and other rotating parts, preventing them from moving due to vibration or load during steering, thereby improving the operational stability of the device and thus improving its practicality. Attached Figure Description

[0023] Figure 1 This is an isometric view of a limit adjustment steering column assembly proposed in this utility model;

[0024] Figure 2 This is a front view of a limit-adjustable steering column assembly proposed in this utility model;

[0025] Figure 3 This is a side sectional view of a limit adjustment steering column assembly proposed in this utility model;

[0026] Figure 4 This is a top view of a limit-adjustable steering column assembly proposed in this utility model;

[0027] Figure 5 for Figure 1 Enlarged view of point A.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Power assist mechanism; 11. Electric power assist head; 12. Electric control unit; 13. Adjustment motor; 14. First flange bolt; 15. Second flange bolt; 16. Upper shaft welded component; 2. Lower mounting bracket; 3. Upper shaft column welded component; 4. Universal joint assembly; 5. First spline; 6. Limiting mechanism; 61. Second spline; 62. Serrated anti-slip flange nut; 7. Stabilizing mechanism; 71. Deep groove ball bearing; 72. Shaft elastic retaining ring; 8. Interface. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Reference Figure 1-3 This utility model provides a specific implementation method:

[0032] A limit-adjustable steering column assembly includes a lower mounting bracket 2, an upper shaft column welded component 3, a universal joint assembly 4, a first spline 5, and an interface 8. An assist mechanism 1 is fixedly connected to the upper end of the lower mounting bracket 2. A limit mechanism 6 is provided at one end of the assist mechanism 1, and a stabilizing mechanism 7 is provided on one side of the outer wall of the assist mechanism 1. The assist mechanism 1 includes an electric assist motor head 11. An electronic control unit 12 is provided on one side of the outer wall of the electric assist motor head 11, and an adjusting motor 13 is provided on one side of the outer wall of the electric assist motor head 11. Multiple first flange bolts 14 are threaded to one end face of the head 11, and multiple second flange bolts 15 are threaded to one end face of the electric motor head 11. An upper shaft welded part 16 is fixedly connected to one end of the electric motor head 11. The limiting mechanism 6 includes a second spline 61, and a serrated anti-slip flange nut 62 is threaded to the outer wall of the second spline 61. The stabilizing mechanism 7 includes a deep groove ball bearing 71. A shaft elastic retaining ring 72 is provided at one end of the outer wall of the upper shaft welded part 16. The device is controlled by a sensor in the electronic control unit 12. The component senses the torque and vehicle speed signals transmitted from the steering wheel via the upper shaft welded part 16, thereby driving the regulating motor 13 to output auxiliary torque. With the assistance of the regulating motor 13, the electric power steering head 11 drives the universal joint assembly 4 to move, and the universal joint assembly 4 finally drives the wheel to rotate, thus making the steering operation easier and more precise, improving the practicality of the device. The device uses the serrated anti-slip flange nut 62. The serrated texture on the lower side of the flange will embed into the outer wall of the upper shaft column welded part 3 when tightened to form a mechanical interlock, resisting the high-frequency vibration of the steering system, so that the second spline 61 will not easily loosen, improving the practicality of the device. The device installs the deep groove ball bearing 71 between the upper shaft column and the upper shaft column welded part 3 to bear radial load and slight axial load, ensuring the stable rotation of the upper shaft column welded part 3. The shaft elastic retaining ring 72 is used to limit the axial displacement of the deep groove ball bearing 71 and other rotating components, preventing them from moving due to vibration or load during steering, improving the operational stability of the device, and thus improving the practicality of the device.

[0033] Reference Figure 3-5 One end of the power steering mechanism 1 is threadedly connected to a universal joint assembly 4, and one end of the universal joint assembly 4 is fixedly connected to a first spline 5. Multiple interfaces 8 are provided on one side end face of the electronic control unit 12. The universal joint assembly 4 is connected to the car tire and is used to transmit the torque after the auxiliary torque is increased by the electric power steering head 11, so that the car tire can turn smoothly.

[0034] One side of the outer wall of the upper shaft welded part 16 is fixedly connected to one side of the inner wall of the deep groove ball bearing 71. One end of the upper shaft welded part 16 is fixedly connected to the second spline 61. The deep groove ball bearing 71 is installed between the upper shaft column and the upper shaft column welded part 3, bearing radial load and slight axial load, ensuring stable rotation of the upper shaft column welded part 3, while the second spline 61 rotates with the upper shaft column welded part 3.

[0035] The number of first flange bolts 14 is greater than the number of second flange bolts 15. This arrangement allows the electric motor head 11 and other components connected to it to have sufficient support.

[0036] The electronic control unit 12 is electrically connected to the regulating motor 13 and the electric power steering head 11. The sensing component in the electronic control unit 12 senses the torque signal and vehicle speed signal transmitted from the steering wheel through the upper shaft welding part 16, and then drives the regulating motor 13 to output auxiliary torque.

[0037] The output end of the regulating motor 13 is engaged with one end of the electric power steering head 11. The regulating motor 13 outputs an auxiliary torque to drive the electric power steering head 11 to move the universal joint assembly 4. The universal joint assembly 4 then drives the wheel to rotate, making the steering operation easier and more precise.

[0038] Working principle: The device senses the torque and vehicle speed signals transmitted from the steering wheel through the upper axle welded part 16 via the sensing component in the electronic control unit 12, and then drives the regulating motor 13 to output auxiliary torque. With the assistance of the regulating motor 13, the electric power steering head 11 drives the universal joint assembly 4 to move, and the universal joint assembly 4 finally drives the wheel to rotate. The device uses the sawtooth anti-slip flange nut 62. The sawtooth texture on the lower side of the flange will embed into the outer wall of the upper axle column welded part 3 when tightened to form a mechanical interlock, resisting the high-frequency vibration of the steering system. The device installs the deep groove ball bearing 71 between the upper axle column and the upper axle column welded part 3 to bear radial load and slight axial load, ensuring the stable rotation of the upper axle column welded part 3. The axle elastic retaining ring 72 is used to limit the axial displacement of the deep groove ball bearing 71 and other rotating parts, preventing them from moving due to vibration or load during steering.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A limit-adjustable steering column assembly, comprising a lower mounting bracket (2), an upper shaft column welded component (3), a universal joint assembly (4), a first spline (5), and an interface (8), characterized in that: The upper end of the lower mounting bracket (2) is fixedly connected to an assist mechanism (1), one end of the assist mechanism (1) is provided with a limit mechanism (6), and one side of the outer wall of the assist mechanism (1) is provided with a stabilizing mechanism (7). The assist mechanism (1) includes an electric assist head (11), an electric control unit (12) is provided on one side of the outer wall of the electric assist head (11), an adjusting motor (13) is provided on one side of the outer wall of the electric assist head (11), a plurality of first flange bolts (14) are threaded to one side of the electric assist head (11), a plurality of second flange bolts (15) are threaded to one side of the electric assist head (11), an upper shaft welded part (16) is fixedly connected to one end of the electric assist head (11), the limiting mechanism (6) includes a second spline (61), a sawtooth anti-slip flange nut (62) is threaded to the outer wall of the second spline (61), the stabilizing mechanism (7) includes a deep groove ball bearing (71), and a shaft elastic retaining ring (72) is provided at one end of the outer wall of the upper shaft welded part (16).

2. The limit-adjustable steering column assembly according to claim 1, characterized in that: One end of the assist mechanism (1) is threadedly connected to a universal joint assembly (4), and one end of the universal joint assembly (4) is fixedly connected to a first spline (5). Multiple interfaces (8) are provided on one side end face of the electronic control unit (12).

3. The limit-adjustable steering column assembly according to claim 1, characterized in that: One side of the outer wall of the upper shaft welded part (16) is fixedly connected to one side of the inner wall of the deep groove ball bearing (71), and one end of the upper shaft welded part (16) is fixedly connected to a second spline (61).

4. The limit-adjustable steering column assembly according to claim 1, characterized in that: The number of the first flange bolts (14) is greater than the number of the second flange bolts (15).

5. The limit-adjustable steering column assembly according to claim 1, characterized in that: The electronic control unit (12) is electrically connected to the regulating motor (13), and the electronic control unit (12) is electrically connected to the electric assist head (11).

6. The limit-adjustable steering column assembly according to claim 1, characterized in that: The output end of the regulating motor (13) is engaged with one end of the electric booster head (11).

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