Integrated sensor knuckle bearing

Abstract

The utility model provides integrated sensor steering knuckle bearing relates to the field of automobile parts, include: bearing assembly, bearing assembly is by bearing module and sealing module constitutes, bearing assembly design is the high integration of automobile chassis core component, it will traditional "steering knuckle" "wheel hub bearing" and "perception element (sensor)" three depth fusion, can realize "wheel steering support" "wheel hub rotary drive" basic function simultaneously, still can real -time collection vehicle key data, provides accurate input for ESP initiative safety system, solved present automobile steering knuckle bearing when using, it can only bear basic support and resistance reduction effect, cannot carry out real -time collection and feedback to automobile wheel rotational speed, axle axial displacement, radial load and so on key motion information, difficult to meet the demand of modern vehicle intelligent monitoring and dynamic regulation and control.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to integrated sensor steering knuckle bearings. Background Technology

[0002] The steering knuckle is a key connecting component between the steering system and the driving system of an automobile. Its main function is to transmit and bear various loads at the front of the vehicle, support the wheels to rotate around the kingpin to achieve vehicle steering, and ensure that the vehicle travels in the direction controlled by the driver. As a core component of the steering knuckle, the steering knuckle bearing is assembled between the steering knuckle and the wheel hub. Its core function is to reduce the frictional resistance when the steering knuckle and the wheel hub rotate relative to each other, ensuring the flexibility and smoothness of rotation between them. At the same time, it must stably bear the radial and axial loads transmitted by the wheels, maintain the structural stability of the steering knuckle during vehicle operation, ensure the precise response of the steering system, and guarantee the handling safety and driving smoothness of the vehicle. It is an important basic component for achieving normal vehicle steering and safe driving.

[0003] Existing automotive steering knuckle bearings, when in use, can only provide basic support and drag reduction. They cannot collect and provide feedback on key motion information such as wheel speed, axle axial displacement, and radial load in real time, making it difficult to meet the needs of intelligent monitoring and dynamic control in modern vehicles. Their functional limitations are prominent. In addition, the seals used with these bearings are mostly made of ordinary rubber, and their structural design and material properties are only for basic sealing needs. They do not have the ability to resist impacts or punctures. During vehicle operation, they are easily punctured or damaged by external factors such as road debris impacts or scratches from foreign objects, directly causing the seals to fail. External dust, moisture, and other impurities can then enter the bearing, accelerating the wear of internal components and significantly reducing the overall service life of the bearing. They also have poor flexibility and stability, making them impractical. Utility Model Content

[0004] This utility model relates to an integrated sensor steering knuckle bearing, which has a bearing assembly. The bearing assembly is designed as a highly integrated core component of the automotive chassis. It deeply integrates the traditional "steering knuckle", "wheel hub bearing" and "sensing element (sensor)", which can realize the basic functions of "wheel steering support" and "wheel hub rotation drive" while also collecting key vehicle driving data in real time. It provides accurate input for active safety systems such as ESP (Electronic Stability Program), ABS (Anti-lock Braking System), and EPS (Electric Power Steering). It is a key component for the "sensory" and "integrated" development of intelligent vehicle chassis. Moreover, the sealing module is designed with a protective structure to ensure that the sealing ring is not damaged by external factors, ensuring the normal use of the bearing module. It has extremely high flexibility, stability and practicality.

[0005] This utility model provides an integrated sensor steering knuckle bearing, specifically including: a connecting base, a monitoring sensor and a bearing assembly, wherein the bearing assembly consists of a bearing module and a sealing module; The connecting base is fixedly installed on the steering knuckle bracket, and the monitoring sensor is fixedly installed inside the connecting base. The bearing module includes an outer bearing ring, an inner bearing ring, a cage, and bearing balls. The outer bearing ring is fixedly installed in the mounting hole of the connecting base, and the bearing balls are rotatably connected inside the cage. The bearing balls and the cage are installed between the outer bearing ring and the inner bearing ring. The sealing module includes a compression skeleton and a sealing ring. The compression skeleton is fixedly installed inside the outer bearing ring, and the sealing ring is fixedly installed inside the compression skeleton.

[0006] Furthermore, the bearing outer ring has a positioning groove on its inner side, and the extruded skeleton is fixedly installed inside the positioning groove. The bearing inner ring has a sealing groove on its outer side, and one side of the sealing ring is inserted into the sealing groove.

[0007] Furthermore, the cross-sectional shape of the extruded frame is U-shaped.

[0008] Furthermore, the outer and inner rings of the bearing are made of GCr15 bearing steel, and the raceway surface is subjected to ultra-precision grinding treatment, with a surface roughness Ra≤0.02μm.

[0009] Furthermore, the bearing module is filled with high-temperature lithium-based grease, and the amount of high-temperature lithium-based grease is 1 / 3 to 1 / 2 of the internal space of the wheel hub bearing module.

[0010] Furthermore, the monitoring sensor is a Hall effect wheel speed sensor.

[0011] This utility model provides an integrated sensor steering knuckle bearing, which has the following beneficial effects: The bearing assembly is designed as a highly integrated core component of the automotive chassis. It deeply integrates the traditional "steering knuckle," "wheel hub bearing," and "sensing elements (sensors)." While realizing the basic functions of "wheel steering support" and "wheel hub rotation drive," it can also collect key vehicle driving data in real time, providing precise input for active safety systems such as ESP (Electronic Stability Program), ABS (Anti-lock Braking System), and EPS (Electric Power Steering). It is a key component in the "sensory" and "integrated" development of intelligent automotive chassis. Furthermore, the sealing module is designed with a protective structure to ensure that the sealing ring is not damaged by external factors, ensuring the normal use of the bearing module and improving the flexibility, stability, and practicality of the device. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0013] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0014] In the attached diagram: Figure 1 A schematic diagram of the structure of this utility model is shown.

[0015] Figure 2 This utility model is shown Figure 1 A schematic diagram of the structure on the other side.

[0016] Figure 3 A schematic diagram of the internal structure of the bearing assembly of this utility model is shown.

[0017] Figure 4 A schematic diagram of the disassembled bearing assembly of this utility model is shown.

[0018] Figure 5 This utility model is shown Figure 3 Enlarged structural diagram of part A in the middle.

[0019] Figure 6 This utility model is shown Figure 3 Enlarged structural diagram of part B in the middle.

[0020] List of reference numerals 1. Connecting base; 2. Monitoring sensors; 3. Bearing module; 301, bearing outer ring; 3011, locating groove; 302, bearing inner ring; 3021, sealing groove; 303, cage; 304, bearing balls; 4. Sealing module; 401. Extruded skeleton; 402. Sealing ring. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Please refer to Figures 1 to 6 Example 1: This utility model proposes an integrated sensor steering knuckle bearing, including: a connecting base 1, a monitoring sensor 2 and a bearing assembly, the bearing assembly being composed of a bearing module 3 and a sealing module 4; The connecting base 1 is fixedly installed on the steering knuckle bracket, and the monitoring sensor 2 is fixedly installed inside the connecting base 1. The bearing module 3 includes an outer bearing ring 301, an inner bearing ring 302, a cage 303, and bearing balls 304. The outer bearing ring 301 is fixedly installed in the mounting hole of the connecting base 1, and the bearing balls 304 are rotatably connected inside the cage 303. The bearing balls 304 and the cage 303 are installed between the outer bearing ring 301 and the inner bearing ring 302. The sealing module 4 includes a compression frame 401 and a sealing ring 402. The compression frame 401 is fixedly installed inside the outer bearing ring 301, and the sealing ring 402 is fixedly installed inside the compression frame 401.

[0023] The bearing outer ring 301 has a positioning groove 3011 on its inner side, and the extrusion frame 401 is fixedly installed inside the positioning groove 3011. The bearing inner ring 302 has a sealing groove 3021 on its outer side, and one side of the sealing ring 402 is inserted into the sealing groove 3021. The extrusion frame 401 has a U-shaped cross-section. The extrusion frame 401 can stably provide extrusion force to the sealing ring 402, so that the bottom end of the sealing ring 402 can be stably deformed and inserted into the sealing groove 3021, thereby achieving the function of sealing the inside of the bearing module 3. At the same time, the extrusion frame 401 can provide protection for the sealing ring 402, effectively preventing the sealing ring 402 from being punctured or damaged due to external factors such as impact from road gravel or scratches from foreign objects, ensuring the normal use of the bearing module 3 and improving the durability and stability of the bearing module 3.

[0024] The outer ring 301 and inner ring 302 of the bearing are made of GCr15 bearing steel, and the raceway surface is ultra-precision ground to a surface roughness Ra≤0.02μm. After heat treatment, GCr15 bearing steel can form a high-hardness (HRC60-64) and good toughness structure, which can withstand the radial / axial load of the bearing during long-term operation and avoid raceway deformation or cracking. Ultra-precision grinding of the raceway surface to Ra≤0.02μm can reduce microscopic protrusions and depressions, increase the contact area between the roller and the raceway, reduce the coefficient of friction (≤0.0015), reduce power loss and wear to extend service life, and form a uniform grease film to block impurities and prevent lubrication failure. At the same time, it corrects the roundness and coaxiality error of the raceway, controls the radial runout of the signal gear ring to ≤0.01mm when the inner ring rotates, ensures the stability of the wheel speed sensor signal, and ensures the accurate operation of the ABS and ESP systems.

[0025] The bearing module 3 is filled with high-temperature lithium-based grease, and the amount of high-temperature lithium-based grease is 1 / 3 to 1 / 2 of the internal space of the wheel hub bearing module 3. It forms a stable lubricating film, reducing rolling friction and wear. The filling amount is controlled at 1 / 3 to 1 / 2 to avoid insufficient lubrication and dry bearing due to insufficient filling, and to prevent excessive filling from increasing rotational resistance and causing grease temperature rise and deterioration. At the same time, space is reserved for grease flow to ensure that all contact points are lubricated. It can also help seal and prevent the intrusion of small impurities, ensuring long-term stable operation of the bearing and extending its service life.

[0026] Among them, monitoring sensor 2 is a Hall effect wheel speed sensor. The Hall effect wheel speed sensor works based on the Hall effect, does not require physical contact with the signal gear ring, avoids mechanical wear, has a long service life and a low failure rate. It is highly adaptable to the environment, is not affected by mud, sand, water or oil, can work stably under complex road conditions, has a fast response speed, can quickly capture changes in wheel speed (such as during rapid acceleration and braking), and accurately outputs pulse signals to ensure that the ABS and ESP systems receive data and react in a timely manner. Moreover, the signal output is stable and has strong anti-interference ability, which can avoid signal distortion caused by electromagnetic interference, ensure the accuracy of wheel speed data, provide reliable input for vehicle active safety control, and adapt to the compact structure and functional requirements of integrated steering knuckle bearings.

[0027] The working principle of this embodiment is as follows: The connecting base 1 and the bearing assembly transmit steering force to drive the wheel to turn and bear the driving load. Under the lubrication of high temperature lithium-based grease, the bearing assembly rotates with the wheel with low resistance and bears radial and axial forces. The detection end of the Hall wheel speed sensor maintains a gap of 0.5-0.8mm with the synchronously rotating signal gear ring on the inner ring. The magnetic field change generated by the rotation of the signal gear ring causes the sensor to output a pulse signal. This signal is transmitted to the controller via the wiring harness to calculate the wheel speed for use by the ABS / ESP system. At the same time, the sealing module 4 blocks impurities and resists vibration, ensuring the continuous and stable operation of the bearing module 3.

Claims

1. An integrated sensor steering knuckle bearing, characterized in that, include: Connecting base (1), monitoring sensor (2) and bearing assembly, the bearing assembly consisting of bearing module (3) and sealing module (4); The connecting base (1) is fixedly installed on the steering knuckle bracket, and the monitoring sensor (2) is fixedly installed inside the connecting base (1). The bearing module (3) includes an outer bearing ring (301), an inner bearing ring (302), a cage (303), and bearing balls (304). The outer bearing ring (301) is fixedly installed in the mounting hole of the connecting base (1), and the bearing balls (304) are rotatably connected inside the cage (303). The bearing balls (304) and the cage (303) are installed between the outer bearing ring (301) and the inner bearing ring (302). The sealing module (4) includes an extrusion frame (401) and a sealing ring (402). The extrusion frame (401) is fixedly installed inside the outer bearing ring (301), and the sealing ring (402) is fixedly installed inside the extrusion frame (401).

2. The integrated sensor steering knuckle bearing according to claim 1, characterized in that, The bearing outer ring (301) has a positioning groove (3011) on its inner side, and the extrusion skeleton (401) is fixedly installed inside the positioning groove (3011). The bearing inner ring (302) has a sealing groove (3021) on its outer side, and one side of the sealing ring (402) is inserted into the sealing groove (3021).

3. The integrated sensor steering knuckle bearing according to claim 2, characterized in that, The cross-sectional shape of the extruded frame (401) is "U".

4. The integrated sensor steering knuckle bearing according to claim 3, characterized in that, The outer ring (301) and inner ring (302) of the bearing are made of GCr15 bearing steel, and the raceway surface is treated with ultra-precision grinding, with a surface roughness Ra≤0.02μm.

5. The integrated sensor steering knuckle bearing according to claim 4, characterized in that, The bearing module (3) is filled with high-temperature lithium-based grease, and the amount of high-temperature lithium-based grease is 1 / 3 to 1 / 2 of the internal space of the wheel hub bearing module (3).

6. The integrated sensor steering knuckle bearing according to claim 5, characterized in that, The monitoring sensor (2) is a Hall effect wheel speed sensor.

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