Ball pin assembly and vehicle provided with same
By introducing elastic, limiting, and guiding components into the ball joint assembly, the problem of poor contact between the ball joint and the steering knuckle was solved, thereby improving the stability and response speed of vehicle steering and extending the service life of the components.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BAODING GREAT MACHINERY CO LTD
- Filing Date
- 2025-08-22
- Publication Date
- 2026-07-24
Smart Images
Figure CN224550629U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vehicle chassis technology, and in particular to a ball joint assembly and a vehicle equipped with it. Background Technology
[0002] The main function of the ball joint assembly is to enable the wheels to move up and down, to steer, and to bear the weight of the vehicle body. During vehicle operation, the ball joint needs to maintain good contact with related components (such as the steering knuckle) at all times and have sufficient structural rigidity to cope with various loads and impacts generated during driving.
[0003] However, the ball joint assembly in the existing technology has certain defects, which makes it difficult for the ball joint to maintain good contact with the steering knuckle and other mating parts at all times. This will affect the accuracy and response speed of steering, resulting in poor handling stability. Utility Model Content
[0004] In view of this, this application aims to provide a ball joint assembly that can effectively ensure good contact with steering components, thereby improving vehicle handling stability.
[0005] To achieve the above objectives, the technical solution of this application is implemented as follows: A ball pin assembly includes a ball pin seat having a receiving cavity, a ball pin with one end inserted into the receiving cavity, and an elastic portion disposed within the receiving cavity; The elastic part abuts between the ball pin and the ball pin seat. The ball pin can compress the elastic part under the action of external force and slide into the receiving cavity. A limiting part is provided between the ball pin seat and the ball pin to limit the sliding displacement of the ball pin.
[0006] Furthermore, the limiting part includes a limiting protrusion provided on the ball pin seat and a limiting groove provided on the outer wall of the ball pin; The limiting groove extends along the axial direction of the ball pin, and the limiting protrusion is inserted into the limiting groove.
[0007] Furthermore, the limiting groove is an annular groove arranged along the circumference of the ball pin; The limiting protrusion is an annular ring surrounding the ball pin.
[0008] Furthermore, the ball pin seat is provided with a guide portion, which is used to guide the sliding of the ball pin.
[0009] Furthermore, the ball pin seat includes a seat body having the receiving cavity, and a bushing disposed in the receiving cavity, the bushing being located on one side of the elastic portion; The limiting part is disposed between the bushing and the ball pin, and the guiding part includes a guide hole on the bushing, and the ball pin is inserted into the guide hole.
[0010] Furthermore, the outer peripheral surface of the bushing is a conical surface with a gradually decreasing outer diameter along the direction away from the elastic part, and part of the cavity wall of the receiving cavity is conformed to the conical surface.
[0011] Furthermore, the bushing is provided with a notch extending through it along its axial direction; and / or, The bushing is press-fitted into the main body of the seat.
[0012] Furthermore, the seat body includes a main body portion having the receiving cavity, and a pressure cap disposed at one end of the main body portion; The elastic part includes a spring disposed between the ball pin and the pressure cap.
[0013] Furthermore, it also includes a dust cover for sealing the gap between the ball pin and the ball pin seat, one end of the dust cover being fitted over the ball pin and the other end being snapped onto the ball pin seat; and / or, The other end of the ball pin is provided with a thread for connection to an external component.
[0014] Compared with related technologies, this application has the following advantages: (1) The ball pin assembly described in this application provides an elastic part that abuts against the ball pin and the ball pin seat in the receiving cavity, so that the elastic part can provide a continuous preload. When an external force is applied, the ball pin can adapt to sliding by compressing the elastic part, and always maintain close contact with the steering component. This can effectively avoid impact or abnormal noise caused by gaps, improve the accuracy of steering transmission, and thus improve the vehicle handling stability.
[0015] Furthermore, the elastic part provides reliable rigid support for the ball pin, ensuring its load-bearing capacity. The limiting part, by restricting the sliding displacement of the ball pin, avoids the risk of failure caused by excessive compression of the elastic part.
[0016] (2) The limiting part consists of a limiting protrusion on the ball pin seat and a limiting groove on the outer wall of the ball pin. It can effectively prevent the ball pin from sliding too much and dislodging from the ball pin seat, or from affecting the normal cooperation with the steering component due to excessive displacement. Moreover, this structure is simple and easy to design and implement.
[0017] (3) The limiting groove is set as an annular groove along the circumference of the ball pin, and the limiting protrusion is set as an annular ring around the ball pin. This annular structure can make the limiting effect evenly distributed along the circumference of the ball pin, which can effectively improve the comprehensiveness and reliability of the limiting.
[0018] (4) By setting a guide on the ball pin seat, it is easy to ensure that the ball pin slides stably only along the preset axis, which can effectively avoid problems such as radial offset and skew caused by external force impact or assembly error, thereby helping to ensure that the ball pin and the steering component always maintain effective contact, and reducing the risk of local wear or poor contact.
[0019] (5) The ball pin seat includes a seat body with a receiving cavity and a bushing disposed in the receiving cavity, and a limiting part is disposed between the bushing and the ball pin. The guiding part includes a guide hole disposed on the bushing. Thus, the bushing, as an intermediate part in the receiving cavity, can not only guide the sliding of the ball pin, but also reduce the direct frictional wear between the ball pin and the seat body.
[0020] (6) By making the outer circumferential surface of the bushing conical and the cavity wall corresponding to the shape of the cavity, the bushing can be quickly installed in the main body of the seat, while the radial stiffness of the ball pin can be effectively guaranteed, and the pressure transmitted by the ball pin can be better absorbed and dispersed.
[0021] (7) A notch is provided on the bushing, which runs through it along its axial direction. The notch provides a buffer space, allowing the bushing to adapt to stress changes through slight deformation, thus avoiding increased local wear caused by rigid contact. Pressing the bushing into the main body of the seat ensures the tightness of the connection between the bushing and the main body and the rigidity of the overall structure through an interference fit.
[0022] (8) The seat adopts a split structure consisting of a main body and a pressure cover. During production and assembly, the core components such as ball pins, elastic parts, and bushings can be installed into the receiving cavity of the main body in sequence, and then the end can be closed by the pressure cover. This simplifies the assembly process and improves assembly efficiency.
[0023] (9) By setting a dust cover that effectively seals the gap between the ball pin and the ball pin seat, external dust, mud, moisture and other impurities can be prevented from entering the cavity, avoiding impurities from adhering to the elastic part, bushing or ball pin surface, preventing the parts from failing due to wear and corrosion, thereby extending the service life of the ball pin assembly. The other end of the ball pin is provided with a thread for connecting with external parts, realizing the connection between the ball pin assembly and external parts, and providing good connection firmness.
[0024] Another object of this application is to provide a vehicle having the ball-pin assembly as described above.
[0025] The vehicle described in this application, by setting the ball joint assembly as described above, can ensure close and stable contact with the steering components through the elastic part, thereby reducing problems such as steering lag and jamming caused by poor contact during steering, and thus improving the overall handling stability of the vehicle. Attached Figure Description
[0026] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the ball pin assembly described in the embodiments of this application; Figure 2 This is a schematic diagram of the ball pin assembly described in an embodiment of this application from another perspective; Figure 3 for Figure 2 Sectional view of line AA in the middle; Figure 4 This is a schematic diagram of the ball pin seat as described in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of the dust cover described in the embodiment of this application; Figure 6 This is a schematic diagram of the structure of the main body of the seat as described in the embodiments of this application; Figure 7 This is a schematic diagram of the bushing structure described in the embodiments of this application; Figure 8 This is a schematic diagram of the bushing described in an embodiment of this application from another perspective; Figure 9 This is a schematic diagram of the ball pin structure described in an embodiment of this application.
[0027] Explanation of reference numerals in the attached figures: 1. Ball joint seat; 101. Base body; 1011. Limiting ring; 1012. Slot; 1013. Mounting slot; 1014. First cavity; 1015. Second cavity; 102. Bushing; 1021. Notch; 1022. Groove; 1023. Limiting protrusion; 1024. Oil groove; 103. Capping; 2. Ball pin; 201. Limiting groove; 3. Dust cover; 301. Fixing groove; 4. Snap ring; 5. Spring. Detailed Implementation
[0028] To make the technical solution and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.
[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.
[0030] Furthermore, it should be noted that in the description of this application, if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, these are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0031] Furthermore, in the description of this application, unless otherwise expressly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application in light of the specific circumstances.
[0032] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0033] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.
[0034] An embodiment of the first aspect of this application provides a ball joint assembly that effectively ensures good contact with steering components.
[0035] The main function of the ball joint assembly is to enable the wheels to move up and down, to steer, and to bear the weight of the vehicle body. During vehicle operation, the ball joint 2 needs to maintain good contact with related components (such as the steering knuckle) at all times and have sufficient structural rigidity to cope with various loads and impacts generated during driving. Therefore, it plays a crucial role in the automotive suspension system.
[0036] A conventional ball joint assembly mainly consists of ball joint seat 1, ball joint 2, pressure cap 103, retaining ring 4, retaining ring, dust cover 3, and other components. These components work together to ensure that the ball joint assembly can withstand enormous pressure and friction under complex conditions such as high-speed driving, thereby ensuring the stability and safety of the vehicle. However, the ball joint assembly in the relevant technology has certain shortcomings, the most prominent of which is that the structural dimensions of ball joint 2 cannot be adaptively adjusted.
[0037] This defect leads to a situation where, during vehicle operation, especially for vehicles with rigid axle suspensions, after prolonged use or complex road conditions, the ball joint 2 and its mating components such as the steering knuckle cannot maintain a consistently good contact state. This may result in excessive clearance or poor contact. Such poor contact not only affects steering accuracy and response speed, resulting in poor handling performance, but may also accelerate wear between components, reduce the service life of the ball joint assembly, and even pose a potential threat to vehicle driving safety in extreme cases.
[0038] In view of this, in order to overcome the shortcomings of the related technology, the ball pin assembly of this embodiment combines... Figures 1 to 3 As shown, the overall design includes a ball pin seat 1 with a receiving cavity, a ball pin 2 with one end inserted into the receiving cavity, and an elastic part disposed within the receiving cavity. The elastic part abuts between the ball pin 2 and the ball pin seat 1. The ball pin 2 can compress the elastic part under external force and slide into the receiving cavity. A limiting part is provided between the ball pin seat 1 and the ball pin 2 to restrict the sliding displacement of the ball pin 2.
[0039] Therefore, by providing an elastic part that abuts against the ball pin 2 and the ball pin seat 1 in the receiving cavity, the elastic part can provide a continuous preload. When an external force is applied, the ball pin 2 can adaptively slide by compressing the elastic part, always maintaining close contact with the steering component. This can effectively avoid impacts or abnormal noises caused by gaps, improve the accuracy of steering transmission, and thus improve the vehicle's handling stability.
[0040] Furthermore, the elastic part can provide reliable rigid support for the ball pin 2, which helps to ensure the load-bearing capacity of the ball pin 2. The limiting part can avoid the risk of failure caused by excessive compression of the elastic part by restricting the sliding displacement of the ball pin 2.
[0041] Based on the above overview, specifically, let's continue to combine... Figures 1 to 3 As shown, the ball joint seat 1, as an important component of the ball joint assembly, serves to connect and bear loads. It is generally made of high-quality carbon structural steel to ensure high mechanical strength. Furthermore, in practical applications, the ball joint assembly is typically press-fitted onto the subframe via the ball joint seat 1 to achieve installation on the vehicle body.
[0042] See also Figures 1 to 3As shown, the ball pin assembly in this embodiment includes a ball pin seat 1 and a ball pin 2, as well as a dust cover 3 for sealing the gap between the ball pin 2 and the ball pin seat 1. One end of the dust cover 3 is fitted over the ball pin 2, and the other end is snapped onto the ball pin seat 1. By providing the dust cover 3, the gap between the ball pin 2 and the ball pin seat 1 can be effectively sealed, thereby preventing external dust, mud, moisture, and other impurities from entering the cavity. This effectively avoids impurities adhering to the elastic part, bushing 102, or the surface of the ball pin 2, preventing component failure due to wear and corrosion, and thus extending the service life of the ball pin assembly.
[0043] In specific implementation, combined with Figures 1 to 5 As shown, firstly, to facilitate the press-fitting of the ball pin seat 1 onto the subframe, the ball pin seat 1 can be roughly cylindrical in shape, with a limiting ring 1011 protruding radially outward on its outer wall to limit the press-fitting displacement of the ball pin seat 1. Secondly, to facilitate the snap-fitting of the dust cover 3 onto the ball pin seat 1, as shown... Figure 4 As shown, a slot 1012 is provided at one end of the ball pin seat 1 along its circumference.
[0044] Correspondingly, such as Figure 5 As shown, one end of the dust cover 3 has a fixing groove 301 conforming to the slot 1012. One end of the dust cover 3 is fitted onto the ball pin 2 and abuts against the ball pin 2. The other end is secured to the ball pin seat 1 by a retaining spring 4 that is locked in the fixing groove 301 and the slot 1012. In addition, the dust cover 3 can be made of rubber vulcanization to give it better sealing performance.
[0045] In some exemplary embodiments, the ball pin seat 1 is provided with a guide portion for guiding the sliding of the ball pin 2. By providing the guide portion, it is beneficial to ensure that the ball pin 2 slides stably only along a preset axial direction (such as the force direction in contact with the steering component), which can effectively avoid problems such as radial offset and skewing caused by external impact or assembly errors, thereby ensuring that the ball pin 2 and the steering component always maintain positive contact and reducing the risk of local wear or poor contact.
[0046] Furthermore, combined with the adaptive function of the elastic part, the guide part makes the compression and sliding process of the ball pin 2 smoother and more controllable. Even under complex road conditions (such as bumps and sharp turns), the displacement of the ball pin 2 can be stably realized along the guide trajectory, which can effectively ensure that the preload of the elastic part is evenly applied to the contact interface, which is conducive to maintaining the consistency and accuracy of steering response.
[0047] In this embodiment, as Figure 3As shown, in some exemplary embodiments, the ball pin seat 1 includes a seat body 101 with a receiving cavity, and a bushing 102 disposed within the receiving cavity, the bushing 102 being located on the elastic part side. The aforementioned limiting part is specifically disposed between the bushing 102 and the ball pin 2, and the guiding part includes a guide hole disposed on the bushing 102, the ball pin 2 being inserted into the guide hole.
[0048] At this point, by setting the bushing 102, not only can it guide the sliding of the ball pin 2, but it can also reduce the direct frictional loss between the ball pin 2 and the seat body 101, and buffer the impact force when the ball pin 2 slides, reducing the risk of fatigue damage to the components. At the same time, by placing the limiting part between the bushing 102 and the ball pin 2, the limiting function and the guiding function can be integrated into the bushing 102, simplifying the overall structure while improving space utilization.
[0049] In specific implementation, such as Figure 3 As shown, the bushing 102 is cylindrical in shape and can be injection molded from materials such as polyoxymethylene or polytetrafluoroethylene. The length of the bushing 102 is less than the length of the main body 101. In addition, the bushing 102 is positioned near the opening end of the receiving cavity to provide sufficient space for the elastic part.
[0050] In this embodiment, in some exemplary implementations, the seat body 101 includes a main body portion with a receiving cavity and a pressure cap 103 disposed at one end of the main body portion. The elastic part includes a spring 5 disposed between the ball pin 2 and the pressure cap 103. The advantage of this design is that during production and assembly, components such as the ball pin 2, the elastic part, and the bushing 102 can be sequentially installed into the receiving cavity of the main body portion, and then the end can be closed by the pressure cap 103, which simplifies the assembly process and improves assembly efficiency.
[0051] The elastic part uses spring 5, which has good fatigue resistance and is not prone to failure in long-term high-frequency compression and reset cycles. It can effectively ensure the long-term stable operation of the ball pin assembly. Moreover, spring 5 is widely used and easy to obtain.
[0052] In this embodiment, as Figure 3 and Figure 6 As shown, the receiving cavity on the main body includes a first cavity 1014 and a second cavity 1015 that are connected to each other, and a mounting groove 1013 is provided at the bottom of the second cavity 1015 along its circumference. The inner diameter of the first cavity 1014 is smaller than the inner diameter of the second cavity 1015, and the bushing 102 is specifically disposed within the first cavity 1014, while the spring 5 is disposed within the second cavity 1015. This provides a larger placement space for the spring 5, allowing for a larger size to be used, thus providing stable elastic support for the ball pin 2.
[0053] In addition, in specific implementation, spring 5 can be adopted Figure 3The tower-shaped spring 5 shown in the diagram abuts against the pressure cap 103 at its large-diameter end and against the ball pin 2 at its small-diameter end, ensuring axial stiffness stability during the up-and-down movement of the ball pin assembly. Because the diameter of the ball pin 2 is smaller than the inner diameter of the second cavity 1015, this structure of spring 5 not only ensures stable contact with the ball pin 2, but also allows the large-diameter end of spring 5 to abut against the cavity wall of the second cavity 1015, resulting in high placement stability and thus ensuring elastic support for the ball pin 2.
[0054] It should be noted that, in addition to using a tower-shaped spring 5, the elastic part can also use other types of springs 5, or other elastic bodies.
[0055] In some of the exemplary implementations, such as Figure 3 and Figures 6 to 8 As shown, the outer peripheral surface of the bushing 102 is a conical surface with an outer diameter that gradually decreases in the direction away from the elastic part, and part of the cavity wall of the receiving cavity is formed to conform to the conical surface. This conical surface fit makes the contact area between the bushing 102 and the receiving cavity increase with the assembly depth, and can form a wedge-shaped structure with the seat body 101 for self-locking, further improving the rigidity and stability of the product.
[0056] Moreover, the tapered surface, whose outer diameter gradually decreases along the direction away from the elastic part, can disperse the axial load transmitted by the ball pin 2 to the ball pin seat 1 body through the inclined contact surface, reducing local stress concentration. Especially when the vehicle is turning or bumping, it can improve the impact resistance of the overall structure and effectively ensure the radial stiffness of the ball pin 2.
[0057] In specific implementation, combined with Figures 6 to 8 As shown, the bushing 102 in this embodiment is generally conical, and part of the cavity wall of the first cavity 1014 of the main body is conformed to the conical surface of the bushing 102. In addition, the guide hole in the bushing 102 is adapted to the ball pin 2, and the hole wall slides against the ball pin 2 so that the ball pin 2 can fully contact and guide the sliding of the ball pin 2.
[0058] In addition, during assembly, the bushing 102 can be press-fitted into the seat body 101 to ensure the tightness and stability of the connection between the bushing 102 and the seat body 101 through an interference fit. At the same time, the tight connection formed by the press-fit also improves the rigidity of the overall structure, enhances the load-bearing capacity of the ball joint assembly, and extends its service life.
[0059] It should be noted that, in addition to pressing the bushing 102 into the seat body 101, the bushing 102 can also be fixed into the seat body 101 by welding or snap-fitting.
[0060] In some embodiments, combined Figure 7 and Figure 8As shown, the bushing 102 has a notch 1021 extending through it along its axial direction. By providing the notch 1021 extending through it along its axial direction on the bushing 102, the bushing 102 can have a certain radial elastic adjustment capability.
[0061] Therefore, during the sliding process of the ball pin 2, when the ball pin 2 exerts a radial force on the bushing 102, the notch 1021 provides a buffer space, allowing the bushing 102 to adapt to stress changes through slight deformation, avoiding increased local wear caused by rigid contact, and also reducing the risk of jamming during the sliding of the ball pin 2, ensuring the smoothness of the guiding function. In addition, the notch 1021 facilitates the processing and installation of the bushing 102, and during assembly, the contraction and expansion of the notch 1021 can better adapt to the size of the receiving cavity.
[0062] In addition, to improve the smoothness of the sliding of ball pin 2, such as Figure 8 As shown, an oil groove 1024 extending axially is provided within the bushing 102. This oil groove 1024 can store lubricating oil and lubricate the ball pin 2. Furthermore, the oil groove 1024 can be configured as a plurality of grooves spaced apart circumferentially along the bushing 102 to lubricate various parts of the ball pin 2 circumferentially, thereby further improving the smoothness of the ball pin 2's sliding. In addition, a plurality of grooves 1022 spaced apart circumferentially are provided at the large-diameter end of the bushing 102. Since the bushing 102 will be squeezed and deformed after being installed into the seat body 101, the grooves 1022 allow the bushing 102 to deform at this position.
[0063] In some exemplary embodiments, the limiting part includes a limiting protrusion 1023 provided on the ball pin seat 1 and a limiting groove 201 provided on the outer wall of the ball pin 2. The limiting groove 201 extends along the axial direction of the ball pin 2, and the limiting protrusion 1023 is inserted into the limiting groove 201. This structure of the limiting part has the advantages of simple structure and easy design and implementation.
[0064] Furthermore, when the ball pin 2 slides axially into the receiving cavity under the action of external force, the limiting protrusion 1023 moves within the limiting groove 201. Due to the limitation of the axial extension of the limiting groove 201, the ball pin 2 cannot rotate circumferentially. Moreover, the limiting protrusion 1023 acts as a block at both ends of the limiting groove 201, limiting the sliding displacement of the ball pin 2 and preventing the ball pin 2 from sliding excessively and detaching from the ball pin seat 1, or from affecting the normal cooperation with the steering component due to excessive displacement.
[0065] In this embodiment, combined with Figure 8 and Figure 9As shown, in some exemplary embodiments, the limiting groove 201 is an annular groove arranged circumferentially along the ball pin 2, and the limiting protrusion 1023 is an annular ring surrounding the ball pin 2. Here, by setting the limiting groove 201 as an annular groove circumferentially along the ball pin 2 and the limiting protrusion 1023 as an annular ring surrounding the ball pin 2, the annular structure makes the limiting effect evenly distributed circumferentially along the ball pin 2, greatly improving the comprehensiveness and reliability of the limiting. At the same time, this annular structure can also be adapted to the overall structure of the ball pin 2, which is convenient for processing and manufacturing, and can better cooperate with the ball pin 2 and other components of the ball pin seat 1.
[0066] In addition, such as Figure 9 As shown, the ball pin 2 has a rod-like structure. A limiting groove 201 is located at one end of the ball pin 2, and the other end of the ball pin 2 has a thread for connecting to external components. Specifically, this thread can be an external thread on the outer wall of the ball pin 2. Furthermore, to facilitate the insertion of the limiting protrusion 1023 into the limiting groove 201, as shown... Figure 3 and Figure 9 As shown, the diameter of one end of the ball pin 2 located outside the ball pin seat 1 is smaller than the diameter of the other end, and a guide slope is provided to guide its insertion into the bushing 102. Moreover, since the bushing 102 usually has a certain elasticity, it will deform to a certain extent when subjected to external force, and can partially return to its original shape after the external force is removed. Therefore, it is also beneficial for the limiting protrusion 1023 to be inserted into the limiting groove 201.
[0067] It should be noted that, in addition to making both the limiting groove 201 and the limiting protrusion 1023 annular, it is also possible to make only the limiting groove 201 annular, while making multiple limiting protrusions 1023 spaced apart along the circumference of the bushing 102. Furthermore, in addition to setting the limiting groove 201 on the ball pin 2 and the limiting protrusion 1023 on the bushing 102, it is also possible to set the limiting groove 201 on the bushing 102 and the limiting protrusion 1023 on the ball pin 2.
[0068] It is worth noting that, regarding the ball pin assembly of this embodiment, based on the above exemplary embodiments, in specific implementation, as a preferred embodiment, it is still composed of... Figures 1 to 9 As shown, it may include, for example, a ball pin seat 1 with a receiving cavity, a ball pin 2 with one end inserted into the receiving cavity, and an elastic part provided in the receiving cavity.
[0069] The elastic part abuts between the ball pin 2 and the ball pin seat 1. The ball pin 2 can compress the elastic part under the action of external force and slide into the receiving cavity. A limiting part is provided between the ball pin seat 1 and the ball pin 2 to limit the sliding displacement of the ball pin 2.
[0070] The limiting part includes an annular limiting protrusion 1023 on the ball pin seat 1 and an annular limiting groove 201 on the outer wall of the ball pin 2, with the limiting groove 201 extending along the axial direction of the ball pin 2 and the limiting protrusion 1023 inserted into the limiting groove 201. The elastic part includes a spring 5 disposed in the receiving cavity.
[0071] The ball pin seat 1 includes a seat body 101 with a receiving cavity, and a bushing 102 disposed within the receiving cavity, the bushing 102 being located on one side of the spring 5. A limiting protrusion 1023 is disposed on the bushing 102, and a guide portion includes a guide hole disposed on the bushing 102, in which the ball pin 2 is inserted. Furthermore, the outer peripheral surface of the bushing 102 is a conical surface whose outer diameter gradually decreases along the direction away from the elastic portion, and part of the cavity wall conforms to the conical surface.
[0072] In the preferred embodiment of the ball pin assembly described above, the specific configuration and arrangement of the ball pin seat 1, ball pin 2, etc. can still be referred to the descriptions in the above exemplary embodiments. Furthermore, in this preferred embodiment, the beneficial effects brought about by the design of the ball pin seat 1, ball pin 2, etc. can also be referred to the descriptions in the above exemplary embodiments.
[0073] The ball joint assembly in this embodiment adopts the above design. The ball joint 2 can adaptively slide through the compression spring 5, always maintaining close contact with the steering components. This effectively avoids impacts or abnormal noises caused by gaps, improves the accuracy of steering transmission, and thus enhances vehicle handling stability. At the same time, the spring 5 also provides reliable rigid support for the ball joint 2, which helps to ensure the load-bearing capacity of the ball joint 2.
[0074] An embodiment of the second aspect of this application provides a vehicle in which the ball joint assembly described above is provided.
[0075] The vehicle described in this application, by setting up the ball joint assembly as described above, can ensure close and stable contact with the steering components through the elastic part. This reduces problems such as steering lag and jamming caused by poor contact during steering, thereby improving the overall handling stability of the vehicle.
[0076] The above descriptions are merely some embodiments of this application and are not intended to limit this application. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of the claims of this application.
Claims
1. A ball pin assembly, characterized in that: It includes a ball pin seat (1) with a receiving cavity, a ball pin (2) with one end inserted into the receiving cavity, and an elastic part provided in the receiving cavity; The elastic part abuts between the ball pin (2) and the ball pin seat (1). The ball pin (2) can compress the elastic part under the action of external force and slide into the receiving cavity. A limiting part is provided between the ball pin seat (1) and the ball pin (2). The limiting part is used to limit the sliding displacement of the ball pin (2).
2. The ball pin assembly according to claim 1, characterized in that: The limiting part includes a limiting protrusion (1023) provided on the ball pin seat (1) and a limiting groove (201) provided on the outer wall of the ball pin (2). The limiting groove (201) extends along the axial direction of the ball pin (2), and the limiting protrusion (1023) is inserted into the limiting groove (201).
3. The ball pin assembly according to claim 2, characterized in that: The limiting groove (201) is an annular groove arranged along the circumference of the ball pin (2); The limiting protrusion (1023) is an annular ring surrounding the ball pin (2).
4. The ball pin assembly according to claim 1, characterized in that: The ball pin seat (1) is provided with a guide part, which is used to guide the sliding of the ball pin (2).
5. The ball pin assembly according to claim 4, characterized in that: The ball pin seat (1) includes a seat body (101) having the receiving cavity, and a bushing (102) disposed in the receiving cavity, the bushing (102) being located on one side of the elastic part; The limiting part is located between the bushing (102) and the ball pin (2), and the guiding part includes a guide hole on the bushing (102), and the ball pin (2) is inserted into the guide hole.
6. The ball pin assembly according to claim 5, characterized in that: The outer peripheral surface of the bushing (102) is a conical surface whose outer diameter gradually decreases along the direction away from the elastic part, and part of the cavity wall of the receiving cavity is formed to conform to the conical surface.
7. The ball pin assembly according to claim 5, characterized in that: The bushing (102) is provided with a notch (1021) extending through it along its axial direction; and / or, The bushing (102) is press-fitted into the main body (101) of the seat.
8. The ball pin assembly according to claim 5, characterized in that: The seat body (101) includes a main body portion having the receiving cavity, and a pressure cap (103) disposed at one end of the main body portion. The elastic part includes a spring (5) disposed between the ball pin (2) and the pressure cap (103).
9. The ball pin assembly according to any one of claims 1 to 8, characterized in that: It also includes a dust cover (3) for sealing the gap between the ball pin (2) and the ball pin seat (1), one end of the dust cover (3) being fitted over the ball pin (2) and the other end being snapped onto the ball pin seat (1); and / or, The other end of the ball pin (2) is provided with a thread for connecting to an external component.
10. A vehicle, characterized in that: The vehicle is provided with a ball-pin assembly as described in any one of claims 1 to 9.