Ball pin assembly and vehicle

Abstract

The utility model provides a ball pin assembly and a vehicle. The ball pin assembly comprises a ball pin component and an information acquisition device, the ball pin assembly comprises a ball pin seat and a ball pin arranged on the ball pin seat, the ball pin comprises a magnetic ball head and connecting rods arranged on the two opposite sides of the ball head, the connecting rods on the two sides stretch out of the ball pin seat in the opposite directions in the axial direction of the ball head, and connecting holes formed in the extending directions of the connecting rods are formed in the connecting rods. The ball pin seat is provided with a mounting groove matched with the ball head; the information obtaining device is arranged between the ball pin base and the ball head and used for obtaining the swing angle and / or the angular acceleration of the ball head. According to the ball pin assembly, the swing angle and / or the angular acceleration of the ball head can be obtained through the information obtaining device, the abrasion degree of the ball pin assembly can be judged easily, and therefore the performance of the ball pin assembly and the safety of a vehicle can be guaranteed easily.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle parts, and in particular to a ball pin assembly; meanwhile, the utility model also relates to a vehicle provided with the ball pin assembly. Background Art

[0002] The ball pin assembly on the car is an important component, which is usually used to connect the steering mechanism and the hinged part of the suspension to ensure the normal operation of the vehicle. The ball pin assembly generally consists of a ball pin, a ball seat, a ball bowl, a cover and a sealing cover. These parts work together to achieve a reliable connection between the steering mechanism and the suspension of the car.

[0003] Among them, the ball pin is the core component of the ball pin assembly, and it is usually made of steel material with good wear resistance. The core of the ball pin can withstand a certain strength and toughness to adapt to various forces and torques during vehicle steering and driving. The ball seat is the matching component of the ball pin, and it usually cooperates with the ball pin to provide a rotation function. The material of the ball seat may include cast iron, cast steel, or synthetic resin with elasticity and lubrication. The ball bowl is an important component in the ball pin assembly, and it usually works with the ball pin and the ball seat to provide a stable connection and support. The cover and sealing cover are used to protect the inside of the ball pin assembly from dust, moisture and other impurities, so as to maintain its long-term stable operation.

[0004] The ball pin in the prior art is a purely mechanical mechanism with a single function. It cannot collect the movement information of the ball pin (such as the swing angle of the ball pin, the ground clearance of the control arm, etc.) and the life information of the ball pin and feed it back to the whole vehicle, which is not conducive to improving the safety of the vehicle. As a safety component of the whole vehicle, the ball pin assembly cannot monitor key information such as stiffness and wear life, and the safety monitoring level is not high, which poses certain safety risks and thus affects the safety of the vehicle. Utility Model Content

[0005] In view of this, the utility model aims to provide a ball pin assembly to enrich the functions of the ball pin assembly and improve the safety of the vehicle.

[0006] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0007] A ball and pin assembly comprises a ball and pin component and an information acquisition device; the ball and pin component comprises a ball and pin seat, and a ball and pin arranged on the ball and pin seat, and the ball and pin comprises a magnetic ball head, and connecting rods arranged on two opposite sides of the ball head, the connecting rods on both sides extend out of the ball and pin seat in opposite directions along the axial direction of the ball head, and each of the connecting rods is provided with a connecting hole arranged along its own extension direction, and the ball and pin seat is provided with a mounting groove matched with the ball head; the information acquisition device is arranged between the ball and pin seat and the ball head, so as to obtain the swing angle and / or angular acceleration of the ball head.

[0008] Furthermore, the information acquisition device includes a Hall sensor and a chip, the permanent magnet of the Hall sensor is arranged in the ball head along the radial direction of the ball head, the Hall element of the Hall sensor is integrated with the chip and arranged on the ball pin seat, and the chip is provided with a signal amplifier for amplifying the signal.

[0009] Furthermore, the permanent magnet is recessed toward the center of the ball head relative to the outer surface of the ball head.

[0010] Furthermore, the permanent magnet is cylindrical and extends radially along the ball head.

[0011] Furthermore, the connection holes on the two connection rods are both smooth holes, and the two connection holes extend to the ball heads and are interconnected.

[0012] Furthermore, the ball pin seat includes a seat body, and a ball bowl and a pressure cover arranged on the seat body, the mounting groove is arranged on the ball bowl, and the pressure cover presses the ball bowl along the axial direction of the ball bowl.

[0013] Furthermore, the gland is riveted to the seat body; and / or the ball bowl is provided with an oil storage tank connected to the mounting groove.

[0014] Furthermore, the ball pin also includes a dust cover arranged in one-to-one correspondence with the two connecting rods;

[0015] One of the dust covers is arranged between one of the connecting rods and the pressure cover, and the other dust cover is arranged between the other connecting rod and the seat body.

[0016] Furthermore, the end surface of each connecting rod away from the ball head is provided with knurling.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] The ball pin assembly described in the utility model can obtain information on the swing angle and / or angular acceleration of the ball head through an information acquisition device, which is conducive to judging the degree of wear of the ball pin assembly and guiding the replacement of the ball pin whose performance is affected by wear, thereby ensuring the performance of the ball pin assembly and the safety of the vehicle; at the same time, by obtaining the movement information of the ball pin, it is also conducive to monitoring the height and longitudinal acceleration of the vehicle body with high accuracy, which is conducive to further improving the safety of the vehicle.

[0019] In addition, the permanent magnet of the Hall sensor is arranged in the ball head, and the Hall element of the Hall sensor is integrated with the chip, which is convenient for the arrangement of the Hall sensor and the chip. The arrangement of the signal amplifier on the chip is also conducive to improving the accuracy of the information acquisition device. The permanent magnet is recessed toward the center of the ball head relative to the outer surface of the ball head, which is conducive to preventing the permanent magnet from being worn during the swinging of the ball head, thereby helping to extend the service life of the permanent magnet. The permanent magnet is cylindrical and arranged along the radial extension of the ball head, which has the advantages of being easy to arrange and implement, and having a good use effect. The connecting holes on the two connecting rods are light holes, and are interconnected, which is conducive to reducing production costs and convenience of connection.

[0020] In addition, the arrangement of the seat body, the ball bowl and the pressure cover is conducive to ensuring the installation effect of the ball pin in the ball bowl and preventing the ball pin from falling out of the installation groove. The pressure cover is riveted to the seat body to ensure the axial torque of the ball joint assembly and the sealing inside the ball joint; the arrangement of the oil storage tank on the ball bowl is conducive to lubricating the ball pin and the ball bowl with lubricating oil, thereby improving the use effect of both. By providing a dust cover between one connecting rod and the pressure cover, and also providing a dust cover between the other connecting rod and the seat body, it is conducive to preventing external foreign matter from entering the installation groove, which is further conducive to improving the use performance of the ball pin. Knurling is provided on the end face of the connecting rod away from the ball head, which is conducive to increasing the friction between the connecting rod and the surrounding contact parts, thereby improving the connection firmness.

[0021] In addition, another object of the present invention is to provide a vehicle having the ball pin assembly as described above.

[0022] The vehicle described in the utility model, by providing the above ball pin assembly, can monitor the wear state of the ball pin assembly and the height and longitudinal acceleration information of the vehicle body, thereby helping to improve the safety of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0024] Figure 1It is a structural schematic diagram of the ball pin assembly described in an embodiment of the utility model at one viewing angle;

[0025] Figure 2 It is a structural schematic diagram of the ball pin assembly according to an embodiment of the utility model from another perspective;

[0026] Figure 3 for Figure 2 AA direction section view;

[0027] Figure 4 It is a structural schematic diagram of the seat body according to an embodiment of the utility model at one viewing angle;

[0028] Figure 5 It is a structural schematic diagram of the seat body according to an embodiment of the utility model at another viewing angle;

[0029] Figure 6 This is a schematic diagram of the structure of the ball bowl and the ball pin in the assembled state according to the embodiment of the utility model;

[0030] Figure 7 This is a schematic diagram of the structure of the ball pin according to an embodiment of the utility model;

[0031] Figure 8 This is a schematic diagram of the structure of the ball bowl according to an embodiment of the utility model;

[0032] Fig. 9 This is a schematic diagram of the structure of the cover plate according to an embodiment of the utility model;

[0033] Fig.10 It is a schematic diagram of the relationship between the swing angle of the ball pin assembly and the magnetic flux according to the embodiment of the utility model;

[0034] Fig.11 This is a schematic diagram of the relationship between the magnetic flux and voltage of the ball pin assembly described in an embodiment of the utility model.

[0035] Description of reference numerals:

[0036] 1. Ball pin seat; 2. Ball pin; 3. Information acquisition device; 4. First dust cover; 5. Second dust cover;

[0037] 100, mounting groove; 101, seat body; 1012, mounting protrusion; 1013, third annular groove; 1014, limiting surface; 1015, connecting groove; 102, ball bowl; 1021, limiting protrusion; 1022, oil storage groove; 1023, oil storage hole; 1024, mounting hole; 103, gland; 1031, pressing protrusion; 1032, first annular groove;

[0038] 201, ball head; 2011, assembly groove; 202, connecting rod; 2021, connecting hole; 2022, second annular groove; 2023, fourth annular groove;

[0039] 301, Hall element; 302, chip; 303, permanent magnet;

[0040] 401, retaining ring; 402, retaining ring. DETAILED DESCRIPTION

[0041] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0042] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0043] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0044] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0045] This embodiment relates to a ball pin assembly which is an important component of a transmission system in a vehicle. The ball pin assembly in the prior art has a single function, which is not conducive to monitoring the degree of wear and tear, and thus is not conducive to the safety of the vehicle. This embodiment optimizes the structure of the ball pin assembly to enrich the function of the ball pin assembly and is conducive to improving the safety of the vehicle.

[0046] In terms of overall structure, the ball pin assembly includes a ball pin assembly and an information acquisition device 3. The ball pin assembly includes a ball pin seat 1, and a ball pin 2 arranged on the ball pin seat 1, and the ball pin 2 includes a magnetic ball head 201, and connecting rods 202 arranged on two opposite sides of the ball head 201, and the connecting rods 202 on both sides extend out of the ball pin seat 1 in opposite directions along the axial direction of the ball head 201, and each connecting rod 202 is provided with a connecting hole 2021 arranged along its own extension direction, and the ball pin seat 1 is provided with a mounting groove 100 matched with the ball head 201. The information acquisition device 3 is arranged between the ball pin seat 1 and the ball head 201, and is used to collect the swing angle and / or angular acceleration of the ball head 201.

[0047] The ball pin assembly described in this embodiment can obtain the swing angle and / or angular acceleration information of the ball pin 2 through the information acquisition device 3, which is conducive to judging the wear degree of the ball pin assembly and guiding the replacement of the ball pin that affects the performance due to wear, thereby ensuring the performance of the ball pin assembly and the safety of the vehicle. At the same time, by obtaining the swing angle and / or angular acceleration of the ball pin 2, it is also conducive to monitoring the longitudinal acceleration of the vehicle body with high accuracy.

[0048] Based on the above overall introduction, an exemplary structure of the ball pin assembly described in this embodiment is as follows: Figures 1 to 3 As shown in . Two connecting rods 202 are arranged on both sides of the ball head 201, so that the ball pin assembly becomes a cross-shaped ball pin assembly. The ball pin seat 1 is used as a mounting carrier for the ball bowl 102 and the ball pin 2, and includes a seat body 101, and a ball bowl 102 and a pressure cover 103 arranged on the seat body 101. The mounting groove 100 is arranged on the ball bowl 102, and the pressure cover 103 presses the ball bowl 102 along the axial direction of the ball bowl 102.

[0049] Among them, Figure 4 and Figure 5 As shown in , the middle part of the seat body 101 is through-set to facilitate the installation of the ball bowl 102 and the ball pin 2 in the seat body 101. Figure 3 and Figure 8 As shown in the figure, the middle of the ball bowl 102 is through-set, the ball head 201 is set in the installation groove 100 of the ball bowl 102, the connecting rods 202 extend out of the ball bowl 102, and the ball head 201 can swing relative to the ball bowl 102. Among them, the ball head 201 has one rotational freedom and two swinging freedoms, so that swinging and rotation can be achieved. The inner circumferential wall of the seat body 101 and the outer circumferential wall of the ball bowl 102 are interference-fitted to ensure the radial torque of the ball joint assembly.

[0050] During specific installation, the seat body 101 is pressed into the control arm body to transfer load and torque. In this embodiment, the matching arrangement of the mounting groove 100 and the ball head 201 means that the shape and specification of the mounting groove 100 are consistent with those of the ball head 201, and the outer peripheral wall of the ball head 201 abuts against the inner peripheral wall of the mounting groove 100. This helps to ensure the stability of the ball head 201 during swinging, thereby ensuring the transmission effect of the ball pin assembly.

[0051] like Figure 8 As shown in the figure, the ball bowl 102 is provided with an oil storage groove 1022 connected with the mounting groove 100. The oil storage groove 1022 is provided at one end of the bowl mouth of the ball bowl 102, and the oil storage groove 1022 is strip-shaped, and there are multiple oil storage grooves 1022 arranged at intervals along the circumference of the ball bowl 102. Corresponding to each oil storage groove 1022, an oil storage hole 1023 extending along the extension direction of the oil storage groove 1022 is provided on the outer peripheral wall of the bottom of the ball bowl 102, and the ends of the oil storage holes 1023 are all set through the ball bowl 102. The setting of the oil storage groove 1022 and the oil storage hole 1023 here is conducive to providing lubricating grease when the ball pin 2 rotates or swings.

[0052] In order to facilitate the installation of the ball bowl 102 on the seat body 101, a radially outwardly protruding limiting protrusion 1021 is provided on the outer peripheral wall of the ball bowl 102 having the bowl mouth. A limiting surface 1014 capable of abutting against the limiting protrusion 1021 is provided on the inner peripheral wall of the seat body 101 to limit the displacement of the ball bowl 102 in the axial direction of the seat body 101 away from the gland 103. Here, the limiting protrusion 1021 and the limiting surface 1014 have a simple structure, are easy to process and form, and have a good limiting matching effect.

[0053] The above-mentioned pressure cover 103 is specifically pressed tightly against the bowl mouth end of the ball bowl 102, such as Figure 3 and Fig. 9 As shown in the figure, the gland 103 is annular, and a radially outwardly convex pressing protrusion 1031 is provided at one end of the gland 103 facing the bowl mouth, and the gland 103 is connected to the seat body 101 through the pressing protrusion 1031. As a preferred connection method, the gland 103 is connected to the seat body 101 by riveting, so that the axial torque of the ball joint assembly is ensured, and the sealing inside the ball joint is ensured.

[0054] like Fig. 9As shown in the figure, corresponding to the clamping protrusion 1031, an annular connecting groove 1015 is provided on the seat body 101, and the clamping protrusion 1031 is riveted to the connecting groove 1015, so that the pressure cover 103 is installed on the seat body 101, and the clamping protrusion 1031 in the installed state abuts against the outer side of the limiting protrusion 1021, so that the limiting protrusion 1021 is constrained between the clamping protrusion 1031 and the limiting surface 1014, and can limit the displacement of the ball bowl 102 close to the pressure cover 103 in the axial direction of the seat body 101, thereby ensuring the stability of the ball bowl 102 in use.

[0055] As a preferred embodiment, the connection holes 2021 on the two connection rods 202 in this embodiment are both light holes, and the two connection holes 2021 extend to the ball head 201 and are connected to each other. With such a configuration, the ball pin 2 can be connected to components such as a steering knuckle through a connector that passes through the light hole, thereby helping to reduce production costs. The end surface of each connection rod 202 away from the ball head 201 is provided with knurling. By providing knurling, it is beneficial to increase the friction between the connection rod 202 and the surrounding contact parts, thereby improving the connection firmness. Of course, it is also feasible to adopt a non-connected configuration for the two connection holes 2021, as long as the connection requirements of the connection rod 202 are met.

[0056] like Figure 1 and Figure 3 As shown in , the information acquisition device 3 in this embodiment includes a Hall sensor and a chip 302. The permanent magnet 303 of the Hall sensor is arranged in the ball head 201 along the radial direction of the ball head 201. The Hall element 301 of the Hall sensor is integrated with the chip 302 and arranged on the ball pin seat 1, and the chip 302 is provided with a signal amplifier for amplifying the signal. In this embodiment, the permanent magnet 303 of the Hall sensor is arranged in the ball head 201, and the Hall element 301 of the Hall sensor is integrated with the chip 302, which is convenient for the arrangement of the two. The setting of the signal amplifier on the chip 302 is also conducive to improving the use accuracy of the information acquisition device 3.

[0057] As a structural example, the Hall sensor in this embodiment has a bellows on the outside and four or more signal lines on the inside, with a terminal on one end and the other end adjacent to the Hall element 301 and the chip 302. A Hall sensor is used according to the Hall effect. During the swing and rotation of the ball pin 2, the magnetic flux released by the permanent magnet 303 changes synchronously through the Hall element 301. The Hall element 301 converts the magnetic flux change into a voltage signal, and then amplifies the voltage through a signal amplifier and transmits it to the chip 302. The signal is calculated and processed by the internal logic algorithm of the chip 302 to obtain the swing angle and angular acceleration of the ball pin 2. Among them, the schematic diagram of the relationship between the magnetic flux and the voltage of the ball pin assembly is shown in FIG. Fig.11Of course, during specific implementation, only the swing angle or angular acceleration of the ball pin 2 can be obtained according to the use requirements.

[0058] In this embodiment, Figure 6 As shown in the figure, the permanent magnet 303 is cylindrical and extends along the radial direction of the ball head 201. It is not only convenient to arrange and implement, but also has the advantages of good use effect. To facilitate the arrangement of the permanent magnet 303, a mounting groove 2011 is provided on the ball head 201, and the permanent magnet 303 is interference fitted in the mounting groove 2011. Of course, the permanent magnet 303 can also be installed in the mounting groove 2011 by magnetic adsorption or bonding.

[0059] As a preferred arrangement, the permanent magnet 303 is recessed toward the center of the ball head 201 relative to the outer surface of the ball head 201, that is, a gap is formed between the permanent magnet 303 and the notch in the assembly groove 2011. This helps prevent the permanent magnet 303 from being worn during the swinging of the ball head 201, thereby helping to extend the service life of the permanent magnet 303.

[0060] Specifically, by setting the permanent magnet 303, it is beneficial to make the ball head 201 magnetic. And the permanent magnet 303 has a high magnetic energy product, which can generate a larger magnetic field under the condition of small volume and light weight. At the same time, the magnetic field stability of the permanent magnet 303 is very good, and the intensity and direction of the magnetic field will basically not change even in extreme environments (such as high temperature, low temperature, high humidity, and radiation environment). In addition, the permanent magnet 303 can maintain magnetism for a long time, is not easy to lose magnetism, and is not easy to be magnetized. It should be noted that the ball head 201 can also be made magnetic by magnetizing the ball head 201, but this solution is not conducive to controlling the boundary line between the magnetized part and the non-magnetized part of the ball head 201 surface, which will cause trouble for the subsequent assembly calibration.

[0061] To facilitate the arrangement of the Hall element 301 and the chip 302, as shown in FIG. Figure 4 As shown in FIG. 1 , a mounting hole 1024 is provided on the seat body 101, which corresponds to the permanent magnet 303 and passes through the ball bowl 102. The Hall element 301 and the chip 302 are integrated into one body and are installed on the seat body 101 through the mounting hole 1024. The Hall sensor in this embodiment can be a product in the prior art, which has the advantages of high precision, fast response speed, non-contact measurement, linear characteristics, strong anti-interference ability, etc.

[0062] Specifically, the information acquisition device 3 acquires the swing angle and / or angular acceleration of the ball head 201 by collecting the magnetic flux area information of the ball head 201 in the vertical direction toward the ball pin seat 1. The magnetic flux area information in the vertical direction toward the ball pin seat 1 refers to the projection area of ​​the ball head 201 falling on the information acquisition device 3 in the vertical direction.

[0063] When the ball pin 2 swings, the vertical projection area of ​​the ball head 201 will decrease or increase accordingly, resulting in a decrease or increase in the magnetic flux area passing through the Hall sensor, which is beneficial for obtaining the swing angle and angular acceleration of the ball pin 2. The relationship between the swing angle of the ball pin assembly and the magnetic flux is shown in the figure below: Fig.10 As shown in . The swing angle can be converted into the vehicle height, and the angular acceleration of the swing can be converted into the longitudinal acceleration of the vehicle. In other words, the vehicle height and the longitudinal acceleration of the vehicle can be obtained through the magnetic flux area information in the vertical direction toward the ball pin seat 1, and can be used as a signal input for the active suspension system, thereby improving the stability of the vehicle handling, and then helping to improve the safety of the vehicle.

[0064] In addition, the long-term monitoring of the magnetic flux area change of the ball head 201 can be used to compare the data changes before and after. Since the newly produced ball pin 2 has a good (large) stiffness (load / displacement), but with the long-term durable wear over time, the ball head 201 and the ball bowl 102 are worn, and the relative position of the ball pin 2 and the seat body 101 (i.e., the permanent magnet 303 and the chip 302) changes, and the distance (displacement) between the two increases, resulting in poor stiffness of the ball pin 2 after durable wear, and the distance (displacement) between the ball pin 2 and the chip 302 increases, and the magnetic flux area through the Hall element 301 is reduced. Therefore, the life of the ball pin 2 can be monitored by monitoring the change of the magnetic flux area before and after long-term durable wear. The stiffness (displacement→magnetic flux→voltage) limit value can be set in the chip 302, and the chip 302 can compare the detected stiffness with the stored stiffness limit value. When the stiffness of the ball pin 2 is detected to be lower than the limit value, an alarm prompt is implemented, and the ball pin 2 can be replaced, thereby achieving the purpose of monitoring the service life of the ball pin assembly.

[0065] As a feasible implementation, the chip 302 can directly send a start signal to the alarm unit (e.g., the central control of the vehicle) after comparison to start the alarm, or send it to the ECU of the vehicle, and the ECU sends a start signal to the alarm unit (e.g., the central control) to start the alarm. The alarm method can be a warning text and / or a warning sound on the central control.

[0066] As a preferred embodiment, Figures 1 to 3 As shown in , the ball pin 2 in this embodiment also includes dust covers corresponding to the two connecting rods 202, one of which is arranged between the one connecting rod 202 and the pressure cover 103, and the other is arranged between the other connecting rod 202 and the seat body 101. The cooperation of the two dust covers is conducive to preventing foreign matter from entering the installation groove 100, and further helps to improve the performance of the ball pin 2. The middle part of the dust cover is radially bulged to have a larger activity space, which helps to ensure the rotation or swing requirements of the ball pin 2.

[0067] In terms of specific structure, in order to facilitate the distinction and description, such as Figure 2 and Figure 3 As shown in the figure, the dust cover disposed between the connecting rod 202 and the gland 103 is called the first dust cover 4, and the other dust cover is called the second dust cover 5. To facilitate the installation of the first dust cover 4, a first annular groove 1032 is provided on the gland 103 and is located outside the pressing protrusion 1031, and a second annular groove 2022 is provided on the outer periphery of the end of the corresponding connecting rod 202. One end of the first dust cover 4 is sleeved outside the first annular groove 1032, and the other end is sleeved outside the second annular groove 2022.

[0068] The first dust cover 4 is connected to the gland 103 by the clamping fit of the clamping ring 401 sleeved on itself and the first annular groove 1032. The first dust cover 4 is connected to the corresponding connecting rod 202 by the clamping fit of the clamping ring 402 sleeved on itself and the second annular groove 2022.

[0069] To facilitate the installation of the second dust cover 5, Figure 5 As shown in FIG. 1 , relative to the gland 103, an axially outwardly convex mounting protrusion 1012 is provided at the other end of the seat body 101, the mounting protrusion 1012 is annular, and a third annular groove 1013 is provided on the outer periphery of the mounting protrusion 1012. One end of the second dust cover 5 is sleeved outside the mounting protrusion 1012, and the other end is sleeved on the corresponding connecting rod 202.

[0070] The second dust cover 5 is connected to the mounting protrusion 1012 by the clamping fit of the clamping ring 401 sleeved thereon and the third annular groove 1013. The second dust cover 5 is connected to the corresponding connecting rod 202 by the clamping fit of the clamping ring 402 sleeved thereon and the fourth annular groove 2023.

[0071] In this embodiment, the dust cover can be installed by cooperating with the retaining spring 401 and the retaining ring 402, and both the retaining spring 401 and the retaining ring 402 are products in the prior art, which not only have a simple structure and are easy to install, but also have a good connection effect, thereby ensuring the sealing and dustproof effect of the dust cover.

[0072] In addition, the seat body 101 in this embodiment can be formed by hot forging or cold extrusion of metal and then machined, and is generally made of high-quality medium carbon steel or medium carbon alloy steel. The ball pin 2 is generally formed by cold extrusion of medium and low alloy steel materials and then machined after heat treatment. The ball bowl 102 is injection molded by engineering plastics, which has a certain self-lubricating property, which is conducive to ensuring the lubrication and wear resistance of the ball bowl 102. The pressure cover 103 is formed by metal stamping or cold extrusion and then machined, and each dust cover is vulcanized and molded by rubber materials.

[0073] The ball pin assembly in this embodiment integrates the ball pin assembly with the Hall sensor, so that the ball pin assembly can collect the movement information of the whole vehicle and provide the whole vehicle monitoring information for the active suspension, thereby improving the intelligence level of the whole vehicle.

[0074] In addition, the present embodiment also relates to a vehicle having the ball and pin assembly as described above.

[0075] The vehicle described in this embodiment, by providing the above-mentioned ball and pin assembly, is advantageously used to monitor the wear state of the ball and pin assembly as well as the height of the vehicle body and the longitudinal acceleration information of the vehicle body, thereby facilitating improving the safety of the vehicle.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A ball pin assembly, characterized in that: It includes a ball pin assembly and an information acquisition device (3); The ball pin assembly comprises a ball pin seat (1) and a ball pin (2) arranged on the ball pin seat (1), and the ball pin (2) comprises a magnetic ball head (201) and connecting rods (202) arranged on two opposite sides of the ball head (201), the connecting rods (202) on both sides respectively extend out of the ball pin seat (1) in opposite directions along the axial direction of the ball head (201), and each of the connecting rods (202) is provided with a connecting hole (2021) arranged along its own extension direction, and the ball pin seat (1) is provided with a mounting groove (100) matched with the ball head (201); The information acquisition device (3) is arranged between the ball pin seat (1) and the ball head (201) to acquire the swing angle and / or angular acceleration of the ball head (201).

2. The ball pin assembly according to claim 1, characterized in that: The information acquisition device (3) comprises a Hall sensor and a chip (302); the permanent magnet (303) of the Hall sensor is arranged in the ball head (201) along the radial direction of the ball head (201); the Hall element (301) of the Hall sensor is integrated with the chip (302) and arranged on the ball pin seat (1); and the chip (302) is provided with a signal amplifier for amplifying signals.

3. The ball pin assembly according to claim 2, characterized in that: The permanent magnet (303) is recessed toward the center of the ball head (201) relative to the outer surface of the ball head (201).

4. The ball pin assembly according to claim 3, characterized in that: The permanent magnet (303) is cylindrical and extends radially along the ball head (201).

5. The ball and pin assembly according to claim 1, characterized in that: The connection holes (2021) on the two connection rods (202) are both smooth holes, and the two connection holes (2021) extend to the ball head (201) and are interconnected.

6. The ball pin assembly according to claim 1, characterized in that: The ball pin seat (1) comprises a seat body (101), and a ball bowl (102) and a pressure cover (103) arranged on the seat body (101); the mounting groove (100) is arranged on the ball bowl (102), and the pressure cover (103) presses the ball bowl (102) along the axial direction of the ball bowl (102).

7. The ball and pin assembly according to claim 6, characterized in that: The gland (103) is riveted to the seat body (101); and / or, The ball bowl (102) is provided with an oil storage groove (1022) which is in communication with the mounting groove (100).

8. The ball and pin assembly according to claim 6, characterized in that: The ball pin (2) further comprises dust covers arranged in one-to-one correspondence with the two connecting rods (202); One of the dust covers is arranged between one of the connecting rods (202) and the pressure cover (103), and the other of the dust covers is arranged between the other of the connecting rods (202) and the seat body (101).

9. The ball and pin assembly according to any one of claims 1 to 8, characterized in that: The end surface of each connecting rod (202) away from the ball head (201) is provided with knurling.

10. A vehicle, characterized in that: The vehicle comprises the ball and pin assembly according to any one of claims 1 to 9.

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