Ball joint assembly, control arm assembly and vehicle

Abstract

This disclosure relates to a ball joint assembly, a control arm assembly, and a vehicle. The ball joint assembly includes: a ball joint body, comprising a head and a neck; and a connecting member disposed within the neck, comprising a magnet and an outer cover that selectively shields the magnetic field of the magnet. The magnet and the outer cover are movably disposed relative to each other to have: a first state in which the outer cover releases the magnetic field of the magnet, and the ball joint body is magnetized; and a second state in which the outer cover shields the magnetic field of the magnet, and the ball joint body is demagnetized. By the relative movable arrangement of the magnet and the outer cover in the connecting member, the state of the connecting member is changed, realizing the switching between magnetization and demagnetization of the ball joint body, thereby realizing the connection or disassembly between the neck and the steering knuckle, improving the efficiency and convenience of assembling and disassembling the ball joint body and the steering knuckle.

Description

Technical Field

[0001] This disclosure relates to the field of vehicle parts technology, specifically to a ball joint pin assembly, a rocker arm assembly, and a vehicle. Background Technology

[0002] The control arm assembly connects the steering knuckle to the subframe, serving both guiding and supporting functions. It is a crucial safety component in the automotive suspension system. The end of the control arm is equipped with a ball joint for connecting to the steering knuckle, enabling vehicle steering and ensuring stability and safety during cornering.

[0003] Traditionally, the ball joint body and the steering knuckle are fitted with a tapered joint, i.e. Figure 1 As shown, the neck of the ball joint pin body 2' and the cross-section of the orifice of the steering knuckle 3' used to mate with the neck are tapered to ensure a tight fit during assembly. However, due to the locking force, the fit between the ball joint pin body 2' and the steering knuckle 3' is very tight, making disassembly quite difficult. Typically, it requires forceful tapping of the steering knuckle 3' to loosen the ball joint pin body 2'. However, due to the limited space near the ball joint pin body 2' and the steering knuckle 3', only small but forceful taps can be performed. This makes the disassembly process time-consuming and laborious, and may also damage the ball joint pin body 2' or the steering knuckle 3', increasing the difficulty and cost of repair. Summary of the Invention

[0004] The purpose of this disclosure is to provide a ball joint assembly, a control arm assembly, and a vehicle to at least partially solve the technical problems existing in the related art.

[0005] According to a first aspect of this disclosure, a ball joint assembly is provided, comprising:

[0006] The ball head pin body includes a head and a neck;

[0007] A connecting member, disposed within the neck, includes a magnet and an outer casing that selectively shields the magnetic field of the magnet. The magnet and the outer casing are movably disposed relative to each other to have:

[0008] In the first state, the outer casing releases the magnetic field of the magnet, and the ball-head pin body becomes magnetic; and

[0009] In the second state, the outer cover shields the magnetic field of the magnet, and the ball head pin body is demagnetized.

[0010] Optionally, the ball-head pin body further includes a slot formed in the neck, the outer cover having a cylindrical structure and being inserted axially into the slot, wherein the outer cover includes multiple sequentially alternating magnetic conductive and magnetic insulating components along its circumference, and the magnet is rotatably inserted into the outer cover about its own axis.

[0011] In the first state, the magnet magnetizes the ball head pin body through the magnetic conductor;

[0012] In the second state, the magnetic shielding component shields the magnetic field of the magnet, thereby demagnetizing the ball head pin body.

[0013] Optionally, there are two magnetic conductive elements and two magnetic insulating elements. The cross-sections of the magnetic conductive elements and the magnetic insulating elements are arc-shaped. The openings of the two magnetic conductive elements are opposite to each other and spaced apart to form two notches. The two magnetic insulating elements are inserted into the two notches one to one.

[0014] Optionally, the connecting member further includes a support plate that supports the bottom of the cylindrical structure and is connected to the bottom ends of the two magnetically insulating components. The support plate is made of a magnetically insulating material and its outer contour matches the outer contour of the bottom end of the cylindrical structure.

[0015] Optionally, the magnet is constructed in a waist-shaped structure, with its two magnetic poles distributed at both ends.

[0016] Optionally, the connecting member further includes a rotating component that confines the magnet within the outer casing, the bottom end of the rotating component being used to engage with the magnet to drive the magnet to rotate.

[0017] Optionally, the top end of the magnet has an inwardly recessed groove, the bottom end of the rotating member has a downwardly protruding protrusion for interlocking with the groove, and the top of the rotating member has a mating hole for engaging with the driving member.

[0018] According to a second aspect of this disclosure, a rocker arm assembly is provided, including a rocker arm and a ball joint assembly rotatably connected to said rocker arm, comprising:

[0019] Swing arm;

[0020] According to the ball joint assembly described above, the ball joint body is rotatably connected to the swing arm via the head; and

[0021] Steering knuckle, connected to the neck.

[0022] Optionally, the steering knuckle is sleeved on the outside of the neck, and the end of the neck opposite to the head has an external thread. The swing arm assembly also includes a lock nut screwed into the external thread, the lock nut pressing the steering knuckle onto the neck.

[0023] According to a third aspect of this disclosure, a vehicle is provided, including the swing arm assembly described above.

[0024] By using the above technical solution, the relative movement of the magnet in the connecting component and the outer cover changes the state of the connecting component, realizing the switching between magnetization and demagnetization of the ball joint pin body, thereby enabling the connection or disassembly between the neck and the steering knuckle, and improving the efficiency and convenience of disassembly and assembly of the ball joint pin body and the steering knuckle.

[0025] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0026] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0027] Figure 1 This is a reference diagram showing the usage status of the ball head pin body in related technologies;

[0028] Figure 2 This is a reference diagram showing the usage state of the ball head pin body provided in an exemplary embodiment of this disclosure;

[0029] Figure 3 This is a front view of the ball head pin body provided in an exemplary embodiment of this disclosure;

[0030] Figure 4 This is a top view of the ball head pin body provided in an exemplary embodiment of this disclosure;

[0031] Figure 5 yes Figure 4 A cross-sectional view along the AA direction;

[0032] Figure 6 yes Figure 4 A cross-sectional view along the BB direction;

[0033] Figure 7 When the ball head pin body is in a magnetic state according to the exemplary embodiments of this disclosure. Figure 5 A sectional view along the CC direction;

[0034] Figure 8 When the ball head pin body is in a demagnetized state according to the exemplary embodiments of this disclosure. Figure 5 A sectional view along the CC direction;

[0035] Figure 9 and Figure 11 This is a partial structural schematic diagram of the outer cover provided in an exemplary embodiment of this disclosure;

[0036] Figure 10 This is a perspective view of a magnet provided in an exemplary embodiment of this disclosure;

[0037] Figure 12This is a perspective view of the rotating component provided in an exemplary embodiment of this disclosure.

[0038] Explanation of reference numerals in the attached figures

[0039] 1-Connecting component; 11-Magnet; 111-Groove; 12-Outer cover; 121-Magnetic conductor; 122-Magnetic insulator; 123-Notch; 124-Support plate; 13-Slot; 14-Rotating component; 141-Protrusion; 142-Matching hole; 2, 2'-Ball head pin body; 22-Head; 21-Neck; 3, 3'-Steering knuckle; 4-Swing arm; 5-Locking nut. Detailed Implementation

[0040] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0041] In this disclosure, unless otherwise stated, directional terms such as "inner" and "outer" refer to the outline of the corresponding component itself; directional terms such as "upper," "lower," "top," and "bottom" are defined based on the usage habits of the ball head pin body provided in this disclosure. Specifically, please refer to... Figure 2 The orientation of the drawing is shown. Terms such as "first" and "second" used in this disclosure are for distinguishing one element from another and do not indicate sequence or importance. Furthermore, in the following description, when referring to the accompanying drawings, the same reference numerals in different drawings denote the same or similar elements.

[0042] Reference Figures 2-8 This disclosure provides a ball joint assembly, which may include a connecting member 1 and a ball joint body 2. The ball joint body 2 may include a head 22 and a neck 21, as shown below. Figure 1 or Figure 2 As shown, the head 22 can be rotatably connected to the swing arm 4. The specific connection method between the head 22 and the swing arm 4 is well known to those skilled in the art and will not be described in detail here. The neck 21 can be connected to the steering knuckle 3, as shown in the diagram. Figure 2 , Figure 3 as well as Figure 5As shown in this disclosure, the portion of the neck 21 that mates with the steering knuckle 3 can be constructed as a cylindrical structure. The portion of the steering knuckle 3 through which the neck 21 passes can be formed with a cylindrical through hole coaxially arranged with the neck 21 and matching the outer diameter of the neck 21, so that the neck 21 can be detachably plugged into and unplugged from the steering knuckle 3 along its own axial direction. A connecting member 1 can be disposed within the neck 21 for locking or unlocking the neck 21 and the steering knuckle 3. Specifically, the connecting member 1 can include a magnet 11 and an outer cover 12. The outer cover 12 can selectively shield the magnetic field of the magnet 11, and the magnet 11 and the outer cover 12 can be movably arranged relative to each other to have a first state and a second state. In the first state, the outer cover 12 releases the magnetic field of the magnet 11, causing the ball joint pin body 2 to become magnetized. That is, when the relative positions of the magnet 11 and the outer cover 12 are in their current positions, the outer cover 12 allows the magnetic field of the magnet 11 to pass freely, thus making the ball joint pin body 2 magnetic. In this state, the ball joint pin body 2 can be magnetized to magnetically adhere to the steering knuckle 3, thereby achieving a connection and fixation with the steering knuckle 3. In the second state, the outer cover 12 shields the magnetic field of the magnet 11, causing the ball joint pin body 2 to demagnetize. That is, when the relative positions of the magnet 11 and the outer cover 12 are in their current positions, the outer cover 12 prevents the magnetic field of the magnet 11 from passing through, thus demagnetizing the ball joint pin body 2. In this state, the ball joint pin body 2 loses its magnetism and no longer has the ability to magnetically adhere to the steering knuckle 3, thus allowing it to detach from the steering knuckle 3.

[0043] According to some embodiments provided in this disclosure, the ball joint pin body 2 can be made of a magnetically conductive metal material with a yield strength of 750 MPa or higher, for example, it can be made of 40Cr alloy steel with a yield strength of 785 MPa. This ensures that the ball joint pin body 2 has sufficient magnetism when it is magnetized, ensuring the stability of the magnetic attraction with the steering knuckle 3. At the same time, it also ensures that the ball joint pin body 2 can withstand a certain load without being deformed or broken, thereby improving the stability and reliability of the connection with the steering knuckle 3.

[0044] By using the above technical solution, the relative movement of the magnet 11 and the outer cover 12 in the connecting component 1 changes the state of the connecting component 1, thereby realizing the switching between magnetization and demagnetization of the ball joint pin body 2, and thus realizing the connection or disassembly between the neck 21 and the steering knuckle 3, improving the efficiency and convenience of disassembly and assembly of the ball joint pin body 2 and the steering knuckle 3.

[0045] Reference Figure 2 , Figure 5 as well as Figure 6The ball head pin body 2 may also include a slot 13 coaxially formed in the neck 21. The outer cover 12 can be axially inserted into the slot 13. This connection method makes the connection between the outer cover 12 and the neck 21 more flexible and reliable. The magnet 11 can be rotatably inserted into the outer cover 12 around its own axis. By simply rotating or moving the magnet 11, the shielding or penetration of the magnetic field can be controlled, which can more easily realize the switching between magnetization and demagnetization of the ball head pin body 2, ensuring the switching effect and efficiency of the first state and the second state. According to some embodiments provided in this disclosure, the depth of the slot 13 can be sunk to 1.5mm to 2.5mm below the overlapping part with the steering knuckle 3, for example, it can be sunk to 2mm, to ensure the connection strength between the ball head pin body 2 and the steering knuckle 3 of the connecting member 1 in the first state.

[0046] Reference Figure 4 , Figure 7 as well as Figure 8The outer cover 12 has a cylindrical structure, the outer diameter of which matches the inner diameter of the slot 13. This ensures the overall effect and reliable connection between the outer cover 12 and the neck 21, and facilitates the installation and removal of the outer cover 12 and the neck 21. It also provides a relatively stable space for the magnet 11. Furthermore, the outer cover 12 can include multiple magnetically conductive components 121 and magnetically insulating components 122 arranged alternately along its circumference. The magnetic field of the magnet 11 can be effectively guided and controlled inside the outer cover 12 along its radial direction through the alternating arrangement of the magnetically conductive components 121 and the magnetically insulating components 122. This allows for selective shielding and release of the magnetic field during the rotation of the magnet 11 around its axis, thereby improving the concentration and control performance of the magnetic field. In the first state, the two magnetic poles of magnet 11 can rotate to the positions corresponding to the magnetic conductor 121, so that the ball pin body 2 is magnetized by the magnetic conductor 121. In the second state, the two magnetic poles of magnet 11 can rotate to the positions corresponding to the magnetic shielding component 122, so that the magnetic field of magnet 11 is shielded by the magnetic shielding component 122, thereby demagnetizing the ball pin body 2. In this way, by the penetration of the magnetic field by the magnetic conductor 121 and the isolation of the magnetic field by the magnetic shielding component 122, the range and intensity of the magnetic field of magnet 11 can be controlled more precisely, thereby providing more reliable and accurate magnetic control for the ball pin body 2. According to the embodiments provided in this disclosure, the magnetic shielding component 122 can be made of brass, which can ensure the effect of shielding the magnetic field and guarantee the structural strength of the magnetic shielding component 122. The magnetic conductor 121 can be made of electrical soft iron. After the soft iron is magnetized, it is equivalent to a normal magnet with N and S magnetic poles, which can make the ball head pin body 2 magnetic. This magnetism can reliably magnetically attract the neck 21 and the steering knuckle 3 together. The end of the neck 21 away from the head 22 has an external thread, which can be used to connect with the locking nut 5 mentioned below. In this way, the locking nut 5 can press the connecting member 1 into the slot 13. The magnetized electrical soft iron, together with the locking nut 5, can make the connection between the neck 21 and the steering knuckle 3 more secure.

[0047] Reference Figures 7-11The magnetically conductive component 121 and the magnetically insulating component 122 are each two in number. The cross-sections of the magnetically conductive component 121 and the magnetically insulating component 122 are arc-shaped. The openings of the two magnetically conductive components 121 are opposite each other and spaced apart to form two notches 123. The two magnetically insulating components 122 are inserted into the two notches 123 in a corresponding manner. This assembly method simplifies the assembly process of the magnetically conductive component 121 and the magnetically insulating component 122, improves the connection strength between components and the overall integrity of the outer casing 12, and allows the cross-section of the outer casing 12 to be constructed as a closed ring structure, thereby achieving a more reliable magnetic field shielding and penetration effect, avoiding unnecessary diffusion and influence of the magnetic field. Furthermore, through the specific arrangement order of the magnetically conductive component 121 and the magnetically insulating component 122, the outer casing 12 can achieve more precise and reliable magnetic field control and shielding. The magnet 11 is constructed with a waist-shaped structure, where "waist-shaped" refers to a shape with parallel sides and arc-shaped ends. The two magnetic poles of the magnet 11 can be distributed at both ends of the magnet 11, such as... Figure 7 , Figure 8 as well as Figure 10 As shown, the magnet 11 can be formed into a strip structure, which can be inserted inside the cylindrical structure. The cross-sections at both ends of the strip structure along its length can be constructed into waist-shaped structures, and the magnetic poles are distributed radially on the strip structure. The magnetic strip rotates around the axis of the cylindrical structure to change the distribution position of the magnetic poles. The distribution position of the two magnetic poles can make the magnetic field more concentrated when the magnet 11 rotates to the position corresponding to the magnetic conductor 121, thereby improving the stability and reliability of the magnetic field transmission to the ball head pin body 2 and ensuring the magnetic strength of the ball head pin body 2.

[0048] like Figure 9 As shown, the cross-sectional curvature of the notch 123 is smaller than that of the magnetic conductor 121. On the one hand, this ensures that the magnetic insulator 122 has a certain degree of tightness when inserted into the notch 123, thereby increasing the reliability of the connection between the magnetic insulator 122 and the magnetic conductor 121. On the other hand, it effectively ensures the magnetic strength of the ball head pin body 2 after the magnetic field passes through the outer cover 12 to the ball head pin body 2, thereby improving the magnetic attraction effect between the ball head pin body 2 and the steering knuckle 3.

[0049] Reference Figure 6 and Figure 11The connecting member 1 may further include a support plate 124 that rests on the bottom of the cylindrical structure and is connected to the bottom ends of the two magnetically insulating components 122. In this disclosure, the support plate 124 may be made of brass to shield the bottom of the magnet 11 from the magnetic field. The support plate 124 may be integrally formed with the two magnetically insulating components 122, thereby increasing the overall stability of the connecting member 1 and improving the overall structural effect of the connecting member 1. In addition, the outer contour of the support plate 124 may match the outer contour of the bottom end of the cylindrical structure, making it easier to align and install the magnetically insulating component 122 and the magnetically conductive component 121 during assembly, improving assembly efficiency, reducing the risk of loosening between the magnetically insulating component 122 and the magnetically conductive component 121, and greatly increasing the stability and reliability of the outer cover 12.

[0050] Reference Figure 6 and Figure 7 The connecting member 1 may further include a rotating member 14 disposed within the neck 21. The rotating member 14 can be used to confine the magnet 11 within the outer casing 12, preventing the magnet 11 from falling off or shifting during use, thereby improving safety and reliability. The bottom end of the rotating member 14 can engage with the magnet 11, effectively driving the magnet 11 to rotate and change the direction of its magnetic field. The top end of the rotating member 14 can be flush with the end face of the neck 21, effectively ensuring that the rotating member 14 is correctly aligned and securely connected to the neck 21 during assembly, thus improving the precision and stability of the connection between the magnet 11 and the rotating member 14, and between the rotating member 14 and the neck 21.

[0051] Furthermore, referring to Figures 5-7 The top of the magnet 11 has an inwardly recessed groove 111, and the bottom of the rotating member 14 has a downwardly protruding protrusion 141 for engaging with the groove 111. Through the engagement of the groove 111 and the protrusion 141, a detachable connection between the rotating member 14 and the magnet 11 is achieved, while also improving the connection strength between them and ensuring the driving accuracy of the rotating member 14 on the magnet 11. Furthermore, when the ball joint assembly and the steering knuckle 3 require assembly, the magnet 11 can be securely mounted inside the outer cover 12 when the rotating member 14 is embedded in the slot 13, effectively preventing the magnet 11 from loosening or falling off during use. (Refer to...) Figures 4-7The top end of the rotating component 14 may be provided with a mating hole 142 for engaging with the driving component. The driving component can be used to drive the rotating component 14 to rotate, thereby driving the magnet 11 to rotate. By driving the rotation of the rotating component 14, the rotation of the magnet 11 can be precisely controlled, thus achieving precise control over the magnetic connection and demagnetization state of the ball joint body 2 and the steering knuckle 3. In addition, the rotating component 14 and the slot 13 may be interference-fitted to ensure that the rotating component 14 and the slot 13 do not rotate relative to each other when the rotating component 14 is not driven by an external force. This allows the rotating component 14 to rotate under a certain torque while ensuring the connection strength with the slot 13 during engagement. The top end of the rotating component 14 may be provided with a mating hole 142 for engaging with the driving component. In this disclosure, the driving component may be a wrench, and the mating hole 142 may be an internal hexagonal structure capable of engaging with the wrench. According to some embodiments provided in this disclosure, the rotating component 14 can be made of a composite material, such as an organic matrix composite material, like carbon fiber. On the one hand, this can ensure the structural strength and wear resistance of the rotating component 14 itself, and ensure the driving effect on the magnet 11. On the other hand, it can also prevent the rotating component 14 itself from having magnetic conductivity, thus preventing magnetic attraction with the magnet 11 during the rotation of the magnet 11.

[0052] like Figure 4 As shown, markings can be made on the top surface of the rotating component 14, and position markings with and without magnetic properties can be made on the top of the ball head pin body 2 to identify the rotation angle. The markings on the top of the ball head pin body 2 and the top of the rotating component 14 are aligned to indicate the magnetic and non-magnetic states, respectively. The non-magnetic markings on the ball head pin body 2 are near the number 0, and the magnetic markings are near the number 1. Rotate the rotating component 14 to... Figure 4 and Figure 7 When in position, the N and S poles of the internal magnet 11 are respectively connected to the two magnetic conductors 121. After being magnetized, the magnetic conductors 121 are equivalent to a normal magnet with N and S poles, making the ball head pin body 2 magnetic, so as to firmly magnetically attract to the steering knuckle 3. With the help of the locking nut 5 mentioned above, the connection is made even more secure. Rotate the rotating part 14 90° to Figure 8 When in position, magnet 11 is located Figure 8 When in position, the N and S magnetic poles simultaneously contact the two non-magnetic components 122, forming a closed magnetic circuit, so there is no external magnetism. At this time, simply disassemble the locking nut 5 mentioned below, and then pull out the other parts of the connecting component 1, such as the rotating component 14, to separate the neck 21 from the steering knuckle 3.

[0053] According to a second aspect of this disclosure, a control arm assembly is also provided, including a control arm and a ball joint assembly rotatably connected to the control arm. The ball joint assembly includes a control arm 4 and a ball joint body 2 rotatably connected to the control arm 4 via a head 22, and a neck 21 that can be connected to a steering knuckle 3. This control arm assembly has all the beneficial effects of the ball joint assembly provided in this disclosure, which will not be elaborated further here.

[0054] According to the embodiments provided in this disclosure, refer to Figure 2 The steering knuckle 3 can be sleeved on the outside of the neck 21. The end of the neck 21 opposite to the head 22 has an external thread. The rocker arm assembly also includes a locking nut 5 screwed to the external thread. The locking nut 5 can press the steering knuckle 3 onto the neck 21, thereby further improving the connection strength between the ball joint body 2 and the steering knuckle 3. At the same time, it realizes the detachable connection between the connecting member 1 and the steering knuckle 3 and the ball joint body 2. It also includes other beneficial effects mentioned above, which will not be repeated here.

[0055] According to a third aspect of this disclosure, a vehicle is also provided that may include the aforementioned control arm assembly and have all the beneficial effects of the control arm assembly, which will not be elaborated here.

[0056] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0057] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0058] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A ball joint pin assembly, characterized in that, include: The ball head pin body (2) includes a head (22) and a neck (21); A connecting member (1), disposed within the neck (21), includes a magnet (11) and an outer cover (12) that selectively shields the magnetic field of the magnet (11). The magnet (11) and the outer cover (12) are movably disposed relative to each other to have: In the first state, the outer casing (12) releases the magnetic field of the magnet (11), and the ball joint pin body (2) becomes magnetic, enabling it to magnetically attach to the steering knuckle (3); and In the second state, the outer cover (12) shields the magnetic field of the magnet (11), and the ball head pin body (2) is demagnetized so that it can be disengaged from the steering knuckle (3). The ball head pin body (2) also includes a slot (13) formed in the neck (21). The outer cover (12) is constructed as a cylindrical structure and is inserted into the slot (13) axially. The outer cover (12) includes multiple magnetic conductive parts (121) and magnetic insulating parts (122) arranged alternately in sequence along its circumference. The magnet (11) is rotatably inserted into the outer cover (12) about its own axis. In the first state, the magnet (11) magnetizes the ball head pin body (2) through the magnetic conductor (121); In the second state, the magnetic shielding element (122) shields the magnetic field of the magnet (11), thereby demagnetizing the ball head pin body (2); The connecting member (1) further includes a support plate (124) supported at the bottom of the cylindrical structure and connected to the bottom end of the magnetically insulating member (122). The support plate (124) is made of magnetically insulating material and its outer contour structure matches the outer contour structure of the bottom end of the cylindrical structure to provide magnetic field shielding for the bottom of the magnet (11). The connecting member (1) further includes a rotating member (14) that confines the magnet (11) within the outer cover (12), the bottom end of the rotating member (14) being used to engage with the magnet (11) to drive the magnet (11) to rotate.

2. The ball joint pin assembly according to claim 1, characterized in that, The number of the magnetic conductive element (121) and the magnetic insulating element (122) are two, and the cross-sections of the magnetic conductive element (121) and the magnetic insulating element (122) are arc-shaped. The two magnetic conductive elements (121) have openings facing each other and spaced apart to form two notches (123). The two magnetic insulating elements (122) are inserted into the two notches (123) in a one-to-one correspondence.

3. The ball head pin assembly according to claim 1 or 2, characterized in that, The magnet (11) is constructed in a waist shape, and the two magnetic poles of the magnet (11) are distributed at both ends of the magnet (11).

4. The ball joint pin assembly according to claim 1, characterized in that, The top of the magnet (11) has an inwardly recessed groove (111), the bottom of the rotating member (14) has a downwardly protruding protrusion (141) for interlocking with the groove (111), and the top of the rotating member (14) has a mating hole (142) for interlocking with the driving member.

5. A swing arm assembly, characterized in that, The assembly includes a rocker arm and a ball joint rotatably connected to the rocker arm, comprising: Swing arm (4); The ball joint assembly according to any one of claims 1-4, wherein the ball joint body (2) is rotatably connected to the rocker arm (4) via the head (22); and Steering knuckle (3) is connected to the neck (21).

6. The swing arm assembly according to claim 5, characterized in that, The steering knuckle (3) is sleeved on the outside of the neck (21), and the end of the neck (21) opposite to the head (22) has an external thread. The swing arm assembly also includes a locking nut (5) screwed to the external thread, and the locking nut (5) presses the steering knuckle (3) onto the neck (21).

7. A vehicle, characterized in that, Includes the swing arm assembly according to claim 5 or 6.

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