Connecting rod structure and vehicle

Abstract

The utility model relates to the technical field of vehicle suspensions, and provides a connecting rod structure and a vehicle, the connecting rod structure is used for connecting a stabilizer bar and a vehicle suspension, the connecting rod structure comprises a connecting rod body and a spherical hinge connecting assembly; the connecting rod body is integrally formed through injection molding and comprises a main body part and a ball pin seat part located at the end of the connecting rod body. The ball hinge connecting assembly comprises a ball pin and a ball bowl, the ball bowl is made of self-lubricating materials and embedded in an inner cavity of the ball pin seat part, and a ball head of the ball pin is hinged in the ball bowl. According to the connecting rod structure, not only can the structural strength be guaranteed, but also the light weight of a product and the preparation quality of the product can be improved, the ball pin can swing smoothly and softly, the durability is improved, and the good using effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle suspension technology, and in particular to a connecting rod structure. This utility model also relates to a vehicle equipped with the aforementioned connecting rod structure. Background Technology

[0002] Vehicle handling stability is a crucial indicator of vehicle performance, directly impacting driving safety and experience. The stabilizer bar's connecting rod, as a suspension component, primarily bears the tensile and compressive forces generated by the vertical movement of the tires, thus playing a vital role in vehicle handling stability. With the advancement of lightweight vehicle design, the connecting rod, a key component of the suspension system, is undergoing an optimized iterative process of lightweighting technology, evolving from metal connecting rods to plastic connecting rods.

[0003] In existing technologies, common plastic connecting rods typically use plastic injection-molded ball joint seats and steel connecting rod bodies. This structural form of plastic connecting rod still has certain limitations. Although the ball joint seat is made of plastic, the connecting rod body is still made of steel. While steel has the advantages of high strength and high rigidity, and can reliably transmit tensile and compressive forces, its weight is relatively large, meaning the overall weight of the connecting rod still needs further improvement. Utility Model Content

[0004] In view of this, the present invention aims to propose a connecting rod structure that, while ensuring structural strength, helps to improve the manufacturing quality and lightweighting of the product.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A connecting rod structure for connecting a stabilizer bar and a vehicle suspension includes a connecting rod body and a ball joint connection assembly;

[0007] The connecting rod body is integrally injection molded and includes a main body and a ball pin seat located at the end of the connecting rod body;

[0008] The ball joint assembly includes a ball pin and a ball cup. The ball cup is made of a self-lubricating material and is embedded in the inner cavity of the ball pin seat. The ball head of the ball pin is hinged to the ball cup.

[0009] Furthermore, the inner wall of the ball cup is provided with an oil reservoir for storing lubricating oil.

[0010] Furthermore, the oil storage section includes a first oil storage tank arranged along the latitude direction of the bowl, a second oil storage tank arranged along the longitude direction of the bowl, and a third oil storage tank located at the bottom of the bowl, wherein the second oil storage tank is connected to the first oil storage tank and the third oil storage tank.

[0011] Furthermore, the outer wall of the ball cup is provided with a stop portion to restrict the rotation of the ball cup relative to the ball pin seat portion.

[0012] Furthermore, the stop portion includes a plurality of stop grooves provided on the outer wall of the ball cup, the stop grooves being arranged along the meridian direction of the ball cup, and the ball pin seat portion after injection molding being partially embedded in the stop grooves.

[0013] Furthermore, the main body is provided with a plurality of weight-reducing grooves; and / or, the outer wall of the ball pin seat is provided with reinforcing ribs, the reinforcing ribs being arranged around the axis of the ball pin seat.

[0014] Furthermore, the ball pin seat is formed with a flange portion arranged around the opening of the inner cavity; the flange portion restricts the ball cup in the inner cavity, the inner side of the flange portion is constructed as a conical surface for the ball pin to swing, and a reinforcing skeleton is embedded in the ball pin seat portion, a portion of the reinforcing skeleton being located inside the flange portion.

[0015] Furthermore, the reinforcing skeleton includes a ring-shaped skeleton body and a plurality of reinforcing rods connected at one end to the skeleton body; the skeleton body is located inside the flange portion, and the plurality of reinforcing rods are arranged at intervals around the inner cavity.

[0016] Furthermore, the connecting rod body is made of PA66-GF30, and / or the ball cup is made of POM.

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

[0018] The connecting rod structure described in this utility model uses an integrally injection-molded connecting rod body, which includes a main body and a ball pin seat. Compared with the existing plastic connecting rod structure that uses a plastic ball pin seat and a steel connecting rod body, this structure can improve the weight reduction of the product while ensuring structural strength, and also improve the manufacturing quality of the product.

[0019] Furthermore, a ball cup is embedded in the inner cavity of the ball pin seat, and the ball cup is made of a self-lubricating material. In this way, the low coefficient of friction of the self-lubricating material can reduce the wear at the ball joint connection, extend the service life of the component, make the ball pin swing smoothly and gently, improve durability, and at the same time eliminate the need for additional lubricating grease, reducing maintenance costs, thus achieving excellent performance.

[0020] The oil reservoir on the inner wall of the ball cup allows for the storage of a certain amount of lubricating grease, thus meeting the lubrication needs of the ball pin's rotation or oscillation. The oil reservoir includes a first oil reservoir arranged along the latitude line of the ball cup, a second oil reservoir arranged along the longitude line of the ball cup, and a third oil reservoir located at the bottom of the ball cup. The second oil reservoir is connected to both the first and third oil reservoirs. This facilitates the processing and preparation of the oil reservoir and also provides better lubrication for the ball pin's rotation or oscillation, ensuring stable and sufficient lubrication, thereby reducing abnormal noise.

[0021] The stop portion on the outer wall of the ball cup effectively restricts its rotation relative to the ball pin seat. The stop portion consists of several stop grooves formed on the outer wall of the ball cup, arranged along the warp direction of the ball cup. After injection molding, the ball pin seat portion is partially embedded in the stop grooves. This ensures that the ball cup does not rotate or misalign under external loads, improving the reliability of the connecting rod.

[0022] Furthermore, several weight-reducing grooves are provided on the main body, which helps to reduce the weight of the connecting rod body and further realize the lightweight design of the connecting rod body. Reinforcing ribs are provided on the outer wall of the ball pin seat, and these ribs are arranged around the axis of the ball pin seat, which helps to improve the structural strength of the ball pin seat of the connecting rod body.

[0023] Furthermore, the flange formed on the ball pin seat can effectively confine the ball cup within the inner cavity of the ball pin seat, preventing the ball pin from being pulled out. Moreover, the conical surface formed on the inner side of the flange provides swing space for the ball pin, ensuring the swing amplitude of the ball pin. At the same time, a reinforcing skeleton is embedded in the ball pin seat, with part of the reinforcing skeleton located inside the flange. This not only improves the structural strength of the opening of the ball pin seat, preventing the flange from tearing due to insufficient strength during use, but also improves the anti-dislodgement performance of the ball pin, enhancing the performance of the connecting rod assembly.

[0024] Secondly, the reinforcing skeleton includes a ring-shaped skeleton body and multiple reinforcing rods, with the skeleton body located inside the flange and the multiple reinforcing rods arranged at intervals around the inner cavity. This structure facilitates fabrication and molding, and also helps to improve the overall structural strength of the ball pin seat. At the same time, the setting of the reinforcing rods also helps to ensure the arrangement position of the skeleton column inside the flange.

[0025] Furthermore, the connecting rod body is made of PA66-GF30 material, which is robust, has excellent mechanical strength, and offers superior toughness and corrosion resistance. Compared to connecting rod bodies made of steel, it also facilitates product weight reduction. The ball cup is made of POM, which utilizes its excellent mechanical strength and stiffness, as well as its good elasticity and self-lubricating properties to make the ball pin swing smoother and more gentle, thus improving the performance of the connecting rod.

[0026] Another objective of this invention is to provide a vehicle in which a stabilizer bar and a connecting rod structure as described above are provided.

[0027] The vehicle of this utility model, by adopting the above-mentioned connecting rod structure, can not only ensure structural strength, but also improve the product's lightweight and manufacturing quality. It also makes the ball pin swing smoothly and gently, improving durability and thus enhancing the vehicle's performance. Attached Figure Description

[0028] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0029] Figure 1 This is a schematic diagram of the connecting rod structure described in an embodiment of the present utility model;

[0030] Figure 2 This is a schematic diagram of the structure of the connecting rod body according to an embodiment of the present utility model;

[0031] Figure 3 This is a perspective view of the ball bowl described in an embodiment of the present utility model;

[0032] Figure 4 This is a cross-sectional view of the ball bowl described in an embodiment of the present utility model;

[0033] Figure 5 This is another structural schematic diagram of the connecting rod structure described in this utility model embodiment;

[0034] Figure 6 This is a schematic diagram of the structure of the reinforcing frame described in an embodiment of the present invention;

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Connecting rod body; 2. Ball pin; 3. Ball cup; 4. Dust cover; 5. Snap ring;

[0037] 101. Inner cavity; 102. Weight reduction groove; 103. Reinforcing rib; 11. Main body; 12. Ball pin seat; 13. Reinforcing frame; 121. Flange; 1211. Conical surface; 1212. First mounting groove; 131. Frame body; 132. Reinforcing rod; 201. Ball head; 202. Pin; 203. Second mounting groove; 204. Positioning end face; 301. First oil reservoir; 302. Second oil reservoir; 303. Third oil reservoir; 304. Stop groove; 41. Main body; 42. Folded part. Detailed Implementation

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0039] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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 of this utility model. Furthermore, 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.

[0040] Furthermore, in the description of this utility model, unless otherwise explicitly 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0041] Furthermore, in the description of this utility model, it should be noted that the directional terms used in this embodiment, such as "up," "down," "left," "right," "front," and "rear," are defined based on the vertical, horizontal, and longitudinal directions of the vehicle. Specifically, the vertical direction of the vehicle is the height direction, the longitudinal direction is the length direction, and the horizontal direction is the width direction. "Inner" and "outer" are defined based on the outline of the corresponding components. For example, the interior and exterior of the vehicle are defined based on the vehicle's outline, with the side closer to the center of the vehicle being "inner" and the opposite side being "outer."

[0042] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0043] Example 1

[0044] This embodiment relates to a connecting rod structure, which can improve the manufacturing quality of the product while ensuring structural strength, and also improve the product's lightweight.

[0045] In existing technologies, common plastic connecting rods typically use plastic injection-molded ball joint seats and steel connecting rod bodies. Compared to traditional iron ball joint seats, plastic ball joint seats offer significant weight reduction advantages, effectively reducing the overall weight of the connecting rod. However, existing plastic connecting rods still have certain limitations. Although the ball joint seats are made of plastic, the connecting rod body is still made of steel. While steel has the advantages of high strength and high rigidity, reliably transmitting tensile and compressive forces, its weight is relatively large, meaning the overall weight of the connecting rod still needs further improvement.

[0046] Therefore, this embodiment addresses the shortcomings of the prior art by proposing a new connecting rod structure for connecting the stabilizer bar and the vehicle suspension. Furthermore, in terms of overall structure, it refers to... Figures 1 to 4 As shown in the figure, the connecting rod structure of this embodiment includes a connecting rod body 1 and a ball joint connecting assembly.

[0047] The connecting rod body 1 is integrally injection molded and includes a main body 11 and a ball pin seat 12 located at the end of the connecting rod body 1. The ball hinge connection assembly includes a ball pin 2 and a ball cup 3. The ball cup 3 is made of a self-lubricating material and is embedded in the inner cavity 101 of the ball pin seat 12. The ball head 201 of the ball pin 2 is hinged to the ball cup 3.

[0048] In the above structure, the connecting rod body 1 is integrally injection molded, so that the connecting rod body 1 includes a main body 11 and a ball pin seat 12. Compared with the structure of the plastic connecting rod in the prior art that uses a plastic ball pin seat and a steel connecting rod body, this structure in this embodiment can improve the product's lightweight while ensuring structural strength, and also improve the product's manufacturing quality.

[0049] Furthermore, a ball cup 3 is embedded in the inner cavity 101 of the ball pin seat 12, and the ball cup 3 is made of a self-lubricating material. In this way, by utilizing the low coefficient of friction of the self-lubricating material, wear at the ball joint connection can be reduced, the service life of the component can be extended, and the ball pin 2 can swing smoothly and gently, improving durability. At the same time, there is no need to add additional lubricating grease, reducing maintenance costs.

[0050] Based on the overall structure above, for details, please refer to... Figures 1 to 4As shown in this embodiment, as a preferred implementation, the connecting rod body 1 is made of PA66-GF30. PA66-GF30 is a glass fiber reinforced PA polyamide material, which is an engineering plastic. Moreover, this material is strong, has good mechanical strength, and possesses excellent toughness and corrosion resistance. Its density is only 17.3% of that of steel, which is conducive to achieving product lightweighting, reducing the overall weight by 20%-35%.

[0051] It should be noted that, in addition to being made of PA66-GF30, the connecting rod body 1 can also be made of other engineering materials, such as polymer materials. However, the connecting rod body 1 made of other engineering materials does not have as long a service life as the connecting rod body 1 made of PA66-GF30.

[0052] The connecting rod body 1 of this embodiment includes a rod-shaped main body 11 and a ball pin seat 12 located at the end of the connecting rod body 1, that is, the ball pin seat 12 connected to the end of the main body 11. As a preferred structure, refer to... Figure 1 and Figure 2 As shown, both ends of the connecting rod body 1 are provided with ball pin seats 12, that is, both ends of the main body 11 are provided with ball pin seats 12. The two ball pin seats 12 are arranged in opposite directions on the connecting rod body 1, and each ball pin seat 12 is provided with a ball hinge connection assembly. Specifically, as shown... Figure 1 As shown, the pins 201 of the ball pins 2 located in the two ball pin seat portions 12 extend in opposite directions. At this time, ball pin seat portions 12 are provided at both ends of the connecting rod body 1, so that both ends of the connecting rod can withstand the tensile and compressive forces transmitted by tire bounce.

[0053] It is understandable that, in addition to arranging ball joint seats 12 at both ends of the connecting rod body 1, it is also possible to provide a ball joint seat only at one end of the connecting rod body 1, depending on actual needs.

[0054] As a preferred embodiment, refer to Figure 1 and Figure 2 In this embodiment, the main body 11 is provided with a plurality of weight-reducing grooves 102. The weight-reducing grooves 102 provided on the main body 11 help to reduce the weight of the connecting rod body 1, and further realize the lightweight design of the connecting rod body 1.

[0055] Similarly, as a preferred embodiment, it is still referred to Figure 1 and Figure 2 In this embodiment, a reinforcing rib 103 is also provided on the outer wall of the ball pin seat portion 12, and the reinforcing rib 103 is arranged around the axis of the ball pin seat portion 12. At this time, the provision of the reinforcing rib 103 is beneficial to improving the structural strength of the ball pin seat on the connecting rod body 1.

[0056] In this embodiment, the ball pin seat 12 is formed with a flange 121 arranged around the opening of the inner cavity 101. The flange 121 restricts the ball cup 3 in the inner cavity 101, and the inner side of the flange 121 is configured as a conical surface 1211 for the ball pin 2 to swing. Figure 2 As shown, the flange portion 121 is tapered at one end near the ball cup 3, which can better limit the end of the ball cup 3 and effectively prevent the ball pin 2 from being pulled out. Moreover, the conical surface 1211 formed on the inner side of the flange portion 121 can provide swing space for the ball pin 2 to swing, ensuring the swing amplitude of the ball pin 2.

[0057] Based on the ball joint seat portion 12 having a flange portion 121 formed thereon, as a preferred embodiment, refer to... Figure 5 As shown, a reinforcing skeleton 13 is embedded in the ball pin seat portion 12, with a portion of the reinforcing skeleton 13 located within the flange portion 121. In this case, embedding the reinforcing skeleton 13 within the ball pin seat portion 12, and ensuring that a portion of the reinforcing skeleton 13 is located within the flange portion 121, can improve the structural strength of the opening of the ball pin seat portion 12, preventing the flange portion 121 from tearing due to insufficient strength during use. Furthermore, it can improve the anti-dislodgement performance of the ball pin 2, thereby enhancing the effectiveness of the connecting rod.

[0058] Specifically, in combination Figure 5 and Figure 6 As shown, the reinforcing skeleton 13 of this embodiment includes a ring-shaped skeleton body 131 and a plurality of reinforcing rods 132 connected at one end to the skeleton body 131. The skeleton body 131 is located within the flange portion 121, and the plurality of reinforcing rods 132 are arranged at intervals around the inner cavity 101. The reinforcing skeleton 13 adopts a ring-shaped skeleton body 131 and a plurality of reinforcing rods 132. This structural form facilitates fabrication and molding, and also improves the overall structural strength of the ball pin seat portion 12. Furthermore, the arrangement of the plurality of reinforcing rods 132 helps to ensure the proper positioning of the skeleton columns within the flange portion 121.

[0059] Specifically, the cross-section of the main frame 131 is preferably rectangular, and the cross-section of the multiple reinforcing rods is preferably circular. This facilitates the arrangement of the multiple reinforcing rods 132 on the main frame 131. It can be understood here that the cross-section of the main frame 131 can be circular in addition to being rectangular. Similarly, the cross-section of the reinforcing rods 132 can be rectangular or other polygonal in addition to being circular.

[0060] In this embodiment, the reinforcing rods 132 are preferably three arranged at intervals. In specific implementation, before injection molding the connecting rod body 1, the reinforcing skeleton 13 is first positioned in the injection mold of the connecting rod body 1, and then the ball cup 3 with the ball pin 2 is also positioned in the injection mold, and then the connecting rod body 1 is injection molded.

[0061] Specifically, when positioning the reinforcing skeleton 13, three reinforcing rods 132 are inserted into corresponding positioning holes on the molding die to position the reinforcing skeleton 13 in the injection mold, ensuring that the skeleton body 131 is located within the flange portion 121. It is worth mentioning that the reinforcing skeleton 13 is positioned using three reinforcing rods 132, utilizing the stability of three-point support to improve the reliability of the reinforcing skeleton positioning process. After injection molding is completed, the ends of any excess reinforcing rods 132 located on the outside of the connecting rod body 1 can be ground down to ensure the molding quality of the connecting rod body 1.

[0062] It is worth noting that, in addition to the three reinforcing rods 132 provided on the reinforcing frame 13, there can also be one, two, or other multiple reinforcing rods 132; this embodiment does not impose any limitations on this. Furthermore, it is also worth noting that the reinforcing frame 13 can be made of steel, which can better ensure the structural strength at the opening of the flange portion 121 and better improve the anti-detachment performance of the ball pin 2. Of course, it is understood that the reinforcing frame 13 can also be made of POM, which, while ensuring the structural strength at the opening of the flange portion 121 and the anti-detachment performance of the ball pin 2, is beneficial for lightweight design.

[0063] When the assembly of ball pin 2 and ball cup 3 is positioned in the injection mold, the structure on the pin 202 of ball pin 2 can be used for positioning. Specifically, the pin 2 is provided with a second mounting groove 203 for fixing the dust cover 4. The end face of the second mounting groove 203 away from the ball head 201 forms the positioning end face 204. The ball pin connection assembly is positioned on the injection mold by positioning the end face 204.

[0064] It should be noted that the positioning accuracy requirement for the reinforcing skeleton 13 is not high; it is sufficient to ensure that the main body of the skeleton 131 is located within the flange portion 121.

[0065] Reference Figure 1 and Figure 5As shown, the ball joint connection assembly of this embodiment includes a ball pin 2 and a ball cup 3. The ball cup 3 is made of a self-lubricating material and is embedded in the inner cavity 101 of the ball pin seat 12. The ball head 201 of the ball pin 2 is hinged to the ball cup 3. In specific implementation, the ball pin 2 and the ball cup 3 are first assembled into an assembly, and then the assembled assembly is placed into the injection mold of the connecting rod body 1, so that the ball cup 3 and the ball pin seat 12 are injection molded into an integral structure, thereby realizing that the ball cup 3 is embedded in the inner cavity 101 of the ball pin seat 12.

[0066] Reference Figure 1 and Figure 5 and combined Figure 3 and Figure 4 As shown, in this embodiment, an oil reservoir for storing lubricating oil is provided on the inner wall of the ball cup 3. This oil reservoir can store a certain amount of lubricating grease, thereby meeting the lubrication requirements of the ball pin 2 during rotation or oscillation.

[0067] For some feasible implementation methods, please refer to [link / reference]. Figure 3 and Figure 4 In this embodiment, the oil storage section includes a first oil storage groove 301 arranged along the latitude direction of the ball cup 3, a second oil storage groove 302 arranged along the longitude direction of the ball cup 3, and a third oil storage groove 303 located at the bottom of the ball cup 3. The second oil storage groove 302 is connected to the first oil storage groove 301 and the third oil storage groove 303. By adopting this structural form, the oil storage section is easier to manufacture and can better lubricate the rotation or oscillation of the ball pin 2, ensuring the stability and sufficiency of lubrication, thereby reducing abnormal noise generated during the rotation or oscillation of the ball pin 2.

[0068] In specific implementation, the second oil reservoir 302 consists of multiple reservoirs arranged at intervals on the inner wall of the ball cup 3. Each second oil reservoir 302 is connected to the first oil reservoir 301 and the third oil reservoir 303, which can further improve the stability and sufficiency of lubrication and further reduce the abnormal noise generated during the rotation or swing of the ball pin 2.

[0069] It should be noted that, in addition to the structure of the first oil storage tank 301, the second oil storage tank 302, and the third oil storage tank 303, the oil storage unit in this embodiment can also adopt other structural forms, such as only providing the first oil storage tank 301, or only providing the second oil storage tank 302, or only providing the third oil storage tank 303. It is also feasible to provide only the first oil storage tank 301 and the second oil storage tank 302, or only providing the second oil storage tank 302 and the third oil storage tank 303.

[0070] In addition to the oil reservoir, the ball cup 3 in this embodiment also has a stop on its outer wall to restrict the rotation of the ball cup 3 relative to the ball pin seat 12. At this time, the stop provided on the outer wall of the ball cup 3 can effectively restrict the ball cup 3 and prevent the ball cup 3 from rotating relative to the ball pin seat 12.

[0071] In some feasible implementations, such as Figure 4 As shown, the stop part includes several stop grooves 304 provided on the outer wall of the ball cup 3. The stop grooves 304 are arranged along the meridian direction of the ball cup 3, and the ball pin seat part 12 after injection molding is partially embedded in the stop grooves 304.

[0072] By using a number of stop grooves 304 formed on the outer wall of the ball cup 3, the stop grooves 304 are arranged along the meridian direction of the ball cup 3. After injection molding, the ball pin seat part 12 is embedded in the stop grooves 304. This ensures that the ball cup 3 does not rotate or misalign when subjected to external loads, thus improving the reliability of the connecting rod.

[0073] In specific implementation, the stop grooves 304 are preferably formed in multiple spaced-apart arrangements on the outer wall of the ball cup 3. After injection molding, the ball pin seat 12 part is fitted with multiple stop grooves 304, which can further improve the stopping effect of the ball cup 3, thereby further preventing the ball cup 3 from rotating relative to the ball pin seat 12.

[0074] It is worth noting that the number of stop grooves 304 can be one or multiple spaced apart; this embodiment does not impose any limitation on this. It is also worth noting that, in addition to using the structure of stop grooves 304, the stop portion can also be several protrusions provided on the outer wall of the ball cup 3. These protrusions are covered by the ball pin seat portion 12 after injection molding, which also prevents the ball cup 3 from rotating relative to the ball pin seat portion 12.

[0075] As a preferred embodiment, the ball cup 3 in this embodiment is preferably made of POM. This allows the ball pin 2 to swing more smoothly and gently, thus improving the performance of the connecting rod.

[0076] It should be noted that, in addition to being made of POM, a material with self-lubricating properties, the ball cup 3 in this embodiment can also be made of self-lubricating materials, such as polytetrafluoroethylene, polyetheretherketone, etc.

[0077] To seal the rotating parts of the ball pin 2 and the ball cup 3 and prevent foreign objects such as mud and sand from entering the ball head 201, refer to Figure 1 and Figure 5As shown, the connecting rod structure in this embodiment also includes a dust cover 4, which is sleeved on the pin 202 of the ball pin 2. One end of the dust cover 4 is connected to the pin 202, and the other end of the dust cover 4 is connected to the ball pin seat 12.

[0078] In specific implementation, the ball pin seat 12 is provided with a first mounting groove 1212, that is, the first mounting groove 1212 is formed on the outer wall of the flange 121. The pin 202 of the ball pin 2 is provided with a second mounting groove 203, and the two ends of the dust cover 4 are respectively fixed in the first mounting groove 1212 and the second mounting groove 203 by snap rings 5.

[0079] In a preferred embodiment, the dust cover 4 is made of vulcanized rubber material and includes a cylindrical main body 41 and a pleated portion 42 connected to the main body 41. The other end of the main body 41, relative to the end connected to the pleated portion 42, is connected to the ball pin seat 12 via a retaining spring 5, and the other end of the pleated portion 42 is connected to the pin 202 via a retaining spring 5. The pleated portion 42 is undulating along the radial direction of the pin 202. This structure of the dust cover 4 further improves the sealing effect and provides sufficient space for the ball pin 2 to swing.

[0080] In this embodiment, the connecting rod structure uses an integrally injection-molded connecting rod body 1, with a ball cup 3 made of self-lubricating material injection-molded onto the ball pin seat 12 on the connecting rod body 1. This not only ensures structural strength but also helps to improve the product's lightweight design and manufacturing quality. Furthermore, it reduces wear at the ball joint connection, extends component life, and makes the ball pin 2 swing smoothly and gently, improving durability. At the same time, it eliminates the need for additional lubricating grease, reducing maintenance costs and thus providing excellent performance.

[0081] Example 2

[0082] This embodiment relates to a vehicle equipped with a stabilizer bar and a connecting rod structure as described in Embodiment 1.

[0083] The vehicle in this embodiment, by adopting the connecting rod structure of Embodiment 1, not only ensures structural strength but also improves product lightweighting and manufacturing quality. Furthermore, it makes the ball pin 2 swing smoothly and gently, improving durability and thus enhancing the vehicle's performance.

[0084] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A connecting rod structure for connecting a stabilizer bar and a vehicle suspension, characterized in that: Includes a connecting rod body (1) and a ball joint connection assembly; The connecting rod body (1) is integrally injection molded and includes a main body (11) and a ball pin seat (12) located at the end of the connecting rod body (1); The ball joint assembly includes a ball pin (2) and a ball cup (3). The ball cup (3) is made of a self-lubricating material and is embedded in the inner cavity (101) of the ball pin seat (12). The ball head (201) of the ball pin (2) is hinged to the ball cup (3).

2. The connecting rod structure according to claim 1, characterized in that: The inner wall of the ball cup (3) is provided with an oil reservoir for holding lubricating oil.

3. The connecting rod structure according to claim 2, characterized in that: The oil storage section includes a first oil storage tank (301) arranged along the latitude direction of the ball bowl (3), a second oil storage tank (302) arranged along the longitude direction of the ball bowl (3), and a third oil storage tank (303) located at the bottom of the ball bowl (3), and the second oil storage tank (302) is connected to the first oil storage tank (301) and the third oil storage tank (303).

4. The connecting rod structure according to claim 1, characterized in that: The outer wall of the ball cup (3) is provided with a stop portion that restricts the rotation of the ball cup (3) relative to the ball pin seat portion (12).

5. The connecting rod structure according to claim 4, characterized in that: The stop part includes a plurality of stop grooves (304) provided on the outer wall of the ball cup (3), the stop grooves (304) are arranged along the meridian direction of the ball cup (3), and the ball pin seat part (12) after injection molding is partially embedded in the stop grooves (304).

6. The connecting rod structure according to claim 1, characterized in that: The main body (11) is provided with a plurality of weight-reducing grooves (102); and / or, The outer wall of the ball pin seat (12) is provided with reinforcing ribs (103), which are arranged around the axis of the ball pin seat (12).

7. The connecting rod structure according to claim 1, characterized in that: The ball pin seat (12) is formed with a flange (121) arranged around the opening of the inner cavity (101); The flange (121) restricts the ball cup (3) in the inner cavity (101). The inner side of the flange (121) is configured as a tapered surface (1211) for the ball pin (2) to swing. A reinforcing skeleton (13) is embedded in the ball pin seat (12), and a portion of the reinforcing skeleton (13) is located inside the flange (121).

8. The connecting rod structure according to claim 7, characterized in that: The reinforcing frame (13) includes a ring-shaped frame body (131) and a plurality of reinforcing rods (132) with one end connected to the frame body (131); The main body of the skeleton (131) is located inside the flange (121), and a plurality of the reinforcing rods (132) are arranged at intervals around the inner cavity (101).

9. The connecting rod structure according to any one of claims 1 to 8, characterized in that: the connecting rod body (1) is made of PA66-GF30, and / or the ball cup (3) is made of POM.

10. A vehicle, characterized in that: a stabilizer bar is provided in the vehicle, and the connecting rod structure according to any one of claims 1 to 9.

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