Ball pin assembly and thrust rod assembly

Abstract

The utility model provides a ball stud assembly and a thrust rod assembly, relates to the field of ball studs, and adopts the technical scheme that the ball stud assembly comprises a ball stud, the ball stud comprises a ball head and a rod part, a buffer bushing is wrapped outside the ball head, the buffer bushing comprises at least two metal layers, and a buffer layer is arranged between every two adjacent metal layers. The ball pin can reliably buffer impact, and the service life of the ball pin is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of ball studs, in particular to a ball stud assembly and a thrust rod assembly. Background Art

[0002] The axle is usually connected to the frame through a suspension, and the two ends of the frame are equipped with vehicle wheels. Therefore, during driving, the force and torque exerted on the vehicle wheels are transmitted to the frame through the suspension, and then to the vehicle body. In order to limit the relative position relationship between the axle and the frame, a thrust rod is usually required, one end of which is connected to the axle, and the other end of which is connected to the frame or suspension bracket. Therefore, when the wheel is subjected to longitudinal force, lateral force or tilting torque, etc., it can ensure that the change in the relative position between the axle and the frame is within an ideal range.

[0003] In the prior art, the thrust rod includes a rod body, a ball seat, a spherical pin assembly and a retaining spring. The rod body and the ball seat are an integrated structure that is cast or welded. When assembling the thrust rod, the ball pin is first pre-compressed and installed into the ball seat. The retaining spring is then used to limit the axial displacement of the ball pin. The ball seat and the ball pin are tightly fitted together through the retaining spring to form the thrust rod.

[0004] When the above technical solution is adopted, the axle will jump up and down and twist significantly when encountering uneven roads. Especially when the vehicle is running at full load, the impact is relatively large. There is hard contact between the ball head seat and the ball pin, which cannot buffer the impact, causing the ball pin to bear alternating loads, resulting in fatigue fracture of the ball pin, which poses a hidden danger to driving safety. The ball pin needs to be replaced frequently, which on the one hand brings trouble to the user, and on the other hand also increases the economic expenditure of the user and improves the cost of use. Utility Model Content

[0005] In order to solve the technical problem in the prior art that the ball stud is prone to premature fatigue fracture, the utility model provides a ball stud assembly and a thrust rod assembly, which can reliably buffer impact and extend the service life of the ball stud.

[0006] The utility model adopts the following technical solution to solve the above technical problems: a ball stud assembly, including a ball stud, wherein the ball stud includes a ball head and a rod portion, the ball head is wrapped with a buffer sleeve on the outside, the buffer sleeve includes at least two metal layers, and a buffer layer is arranged between two adjacent metal layers.

[0007] The utility model can buffer the alternating load by arranging the buffer bushing, avoid the early fatigue failure of the ball pin after being subjected to a large alternating load, is beneficial to improving the axial, radial and torsional stiffness of the ball pin assembly, and reduce the forward and backward movement of the thrust rod assembly. In addition, the provision of the metal layer can enhance the strength of the buffer bushing and extend the service life of the buffer bushing.

[0008] Furthermore, the material of the metal layer is Q420B, and the material of the buffer layer is natural rubber.

[0009] Furthermore, one of the metal layers is arranged on the outermost layer of the buffer bushing, and one of the metal layers is wrapped around the outer surface of the ball head.

[0010] The utility model arranges the outer layer and the inner layer of the buffer bushing as metal layers, so as to facilitate the press-fitting of the buffer bushing, the ball head seat and the ball head pin.

[0011] Furthermore, the metal layer is provided with three layers, and the buffer layer is provided with two layers.

[0012] The utility model provides a three-layer metal frame so that the ball pin assembly has more excellent load-bearing and pressure-resistant performance.

[0013] The utility model also provides a thrust rod assembly, including the above-mentioned ball pin assembly, and also includes a rod body, both ends of the rod body are provided with ball head seats, the buffer bushing and the mounting hole of the ball head seat are interference fit, and the rod body and the ball head seat are both made of lightweight materials.

[0014] The utility model adopts lightweight materials to manufacture the rod body and the ball head seat, so as to realize the lightweight design of the thrust rod assembly, which is beneficial to reducing the weight of the whole vehicle.

[0015] Furthermore, a plurality of hollow interlayers are arranged inside the rod body.

[0016] The utility model can further achieve lightweighting of the rod body by arranging a plurality of hollow interlayers.

[0017] Furthermore, the ball head seat includes a mounting portion and a connecting portion, the mounting portion is provided with the mounting hole, and the connecting portion is connected to the corresponding end of the rod body by bolts.

[0018] Furthermore, a plurality of connecting teeth are provided at both ends of the rod body, a plurality of connecting grooves are provided at the connecting portion, two side surfaces of the connecting teeth can be tightly attached to the groove walls of the corresponding connecting grooves, and the bolts pass through the connecting grooves and the connecting teeth.

[0019] The utility model increases the contact area between the rod body and the ball head seat by arranging the connecting groove and the connecting teeth, thereby further improving the connection strength and the connection stability.

[0020] Furthermore, the mounting hole is a straight cylindrical hole, and a mounting groove is coaxially arranged on the hole wall at one end of the mounting hole, a retaining spring is arranged in the mounting groove, and the retaining spring is clamped at the connection between the ball head and the rod part, and a limiting flange is arranged on the hole wall at the other end of the mounting hole, and the limiting flange can abut against the buffer bushing.

[0021] The utility model limits the ball pin assembly by arranging the retaining spring and the limiting flange, thereby preventing the lateral displacement of the ball pin assembly and preventing the spherical pin assembly from coming out during use, thereby ensuring that the thrust rod assembly can work normally and effectively.

[0022] Furthermore, the rod body is made of glass limiting material and has a square cross-section, and the ball head seat is made of aluminum alloy material.

[0023] It can be seen from the above technical solutions that the utility model has the following advantages:

[0024] The utility model provides a ball pin assembly and a thrust rod assembly. By arranging a buffer bushing, the buffering of the alternating load can be realized, so as to avoid the early fatigue failure of the ball pin after being subjected to a large alternating load, which is beneficial to improving the axial, radial and torsional rigidity of the ball pin assembly and reducing the forward and backward movement of the thrust rod assembly. In addition, the metal layer is arranged to enhance the strength of the buffer bushing, so that the buffer bushing has a stable impact resistance and prolongs the service life of the buffer bushing; the outer layer and the inner layer of the buffer bushing are arranged as metal layers to facilitate the press-fitting of the buffer bushing, the ball seat and the ball pin; by arranging a three-layer metal skeleton, The ball pin assembly has better load-bearing and pressure-resistant performance; by using lightweight materials to manufacture the rod body and the ball head seat, the lightweight design of the thrust rod assembly can be achieved, which is beneficial to reducing the weight of the entire vehicle; by arranging multiple hollow interlayers, the lightweight of the rod body can be further achieved; by arranging connecting grooves and connecting teeth, the contact area between the rod body and the ball head seat is increased, and the connection strength and stability of the connection are further improved; by arranging a retaining spring and a limiting flange, the ball pin assembly is limited to prevent its lateral displacement, and the spherical pin assembly is prevented from falling out during use, so as to ensure that the thrust rod assembly can work normally and effectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is a schematic diagram of the structure of the first specific implementation mode of the utility model. Figure 1 .

[0027] Figure 2 This is a schematic diagram of the structure of the first specific implementation mode of the utility model. Figure 2 .

[0028] Figure 3 It is a structural schematic diagram of a second specific implementation mode of the present utility model.

[0029] Figure 4 It is a structural schematic diagram of the rod body in the second specific implementation mode of the present utility model.

[0030] Figure 5 The structure of the ball head seat in the second specific implementation mode of the utility model is shown in FIG. Figure 1 .

[0031] Figure 6 The structure of the ball head seat in the second specific implementation mode of the utility model is shown in FIG. Figure 2 .

[0032] In the figure, 1, ball head; 2, buffer layer; 3, metal layer; 4, rod; 5, ball head seat; 6, rod body; 7, bolt; 8, retaining ring; 11, mounting hole; 12, connecting groove; 13, mounting groove; 14, limiting flange; 15, hollow interlayer; 16, connecting teeth. DETAILED DESCRIPTION

[0033] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent. Specific implementation method 1

[0035] like Figure 1 and Figure 2 As shown, this specific embodiment provides a ball pin assembly, including a ball pin and a buffer bushing, the ball pin includes a ball head and a rod 4, the buffer bushing is included on the outside of the ball head 1, the buffer bushing includes at least two metal layers 3, and a buffer layer 2 is arranged between two adjacent metal layers 3.

[0036] This specific embodiment can buffer the alternating load by arranging the buffer bushing, thereby preventing the ball pin from suffering early fatigue failure after being subjected to a large alternating load, which is beneficial to improving the axial, radial and torsional stiffness of the ball pin assembly and reducing the forward and backward movement of the thrust rod assembly. At the same time, the buffering effect of the buffer bushing can also reduce vibration and noise during use, thereby improving ride comfort and handling stability. In addition, the provision of the metal layer 3 can enhance the strength of the buffer bushing, so that the buffer bushing has a stable impact resistance and extends the service life of the buffer bushing.

[0037] In this specific embodiment, the material of the metal layer 3 is Q420B, and the material of the buffer layer 2 is natural rubber.

[0038] Since the ball head and the ball head seat 5 adopt an interference fit, and the buffer bushing and the ball head 1 also adopt an interference fit, and since the buffer layer 2 is made of natural rubber material, in order to facilitate press-fitting, one of the metal layers 3 is arranged on the outermost layer of the buffer bushing, and one of the metal layers 3 is wrapped around the outer surface of the ball head 1.

[0039] like Figure 2 As shown, in this specific embodiment, in order to ensure that the ball stud assembly has better load-bearing and pressure-resistant properties, the metal layer 3 is provided with three layers and the buffer layer 2 is provided with two layers.

[0040] The ball head 1 can adopt a spherical structure or a cylindrical structure. In this specific embodiment, it adopts a cylindrical structure, and the rod parts 4 are arranged at both ends of the ball head 1 . Specific implementation method 2

[0042] like Figure 3 As shown, this specific embodiment provides a thrust rod assembly, including specific embodiment one, and also includes a rod body 6, ball head seats 5 are arranged at both ends of the rod body 6, the buffer bushing is interference fit with the mounting hole 11 of the ball head seat 5, the rod body 6 and the ball head seat 5 are both made of lightweight materials, and the lightweight material can be glass fiber material, carbon fiber material or aluminum alloy material. In this specific embodiment, the rod body 6 is made of glass fiber material and has a square cross-section structure, the ball head seat 5 is made of aluminum alloy material and is integrally formed through an extrusion molding process, the extrusion direction is lateral, the mold cost used for extrusion molding is lower, the molding process is simpler, and the efficiency is higher; this specific embodiment uses lightweight materials to manufacture the rod body 6 and the ball head seat 5, so as to achieve a lightweight design of the thrust rod assembly, which is beneficial to reducing the weight of the entire vehicle.

[0043] like Figure 4 As shown, in order to further reduce the weight of the rod body 6, in this specific embodiment, a plurality of hollow interlayers 15 are provided inside the rod body 6. The plurality of hollow interlayers 15 are arranged along the height direction of the rod body 6. In this specific embodiment, three hollow interlayers 15 are provided.

[0044] like Figure 3 and Figure 5 As shown, in this specific embodiment, the ball head seat 5 includes a mounting portion and a connecting portion, the mounting portion is provided with a mounting hole 11 for installing the ball head pin assembly, and the connecting portion is provided with two bolt 7 holes, which are connected to the corresponding ends of the rod body 6 through two bolts 7; in order to enhance the connection strength, both ends of the rod body 6 are provided with a plurality of connecting teeth 16 along its height direction, and the connecting portion is provided with a plurality of connecting grooves 12 along its height direction, and the two side surfaces of the connecting teeth 16 can be tightly attached to the groove walls of the corresponding connecting grooves 12, and the bolts 7 pass through the connecting grooves 12 and the connecting teeth 16.

[0045] like Figure 6As shown, in order to facilitate press-fitting the ball pin assembly into the ball seat 5, the mounting hole 11 is a straight cylindrical hole. In order to limit the ball pin assembly to prevent it from falling out during operation, in the present specific embodiment, a mounting groove 13 is coaxially arranged on the hole wall at one end of the mounting hole 11, and a retaining spring 8 is arranged in the mounting groove 13. The retaining spring 8 is clamped at the connection between the ball head and the rod 4, and a limiting flange 14 is arranged on the hole wall at the other end of the mounting hole 11, and the limiting flange 14 can abut against the buffer bushing.

[0046] From the above specific implementations, it can be seen that the utility model has the following beneficial effects:

[0047] 1. By providing a buffer bushing, the alternating load can be buffered, and the ball pin can be prevented from early fatigue failure after being subjected to a large alternating load, which is beneficial to improving the axial, radial and torsional stiffness of the ball pin assembly and reducing the forward and backward movement of the thrust rod assembly. At the same time, the buffering effect of the buffer bushing can also reduce vibration and noise during use, improve riding comfort and handling stability. In addition, the metal layer 3 can enhance the strength of the buffer bushing and extend the service life of the buffer bushing;

[0048] 2. The outer layer and the inner layer of the buffer bushing are set as the metal layer 3 to facilitate the press-fitting of the buffer bushing, the ball head seat 5 and the ball head pin;

[0049] 3. By setting three metal layers, the ball pin assembly has better load-bearing and pressure-resistant performance;

[0050] 4. By using lightweight materials to manufacture the rod body 6 and the ball head seat 5, the lightweight design of the thrust rod assembly can be achieved, which is beneficial to reducing the weight of the entire vehicle;

[0051] 5. The rod body 6 can be further lightweight by providing a plurality of hollow interlayers 15;

[0052] 6. By providing the connection groove 12 and the connection teeth 16, the contact area between the rod body 6 and the ball head seat 5 is increased, and the connection strength and connection stability are further improved;

[0053] 7. The ball pin assembly is limited by providing a retaining spring 8 and a limiting flange 14 to prevent lateral displacement and to prevent the spherical pin assembly from coming out during use, thereby ensuring that the thrust rod assembly can work normally and effectively.

[0054] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A ball stud assembly, comprising a ball stud, characterized in that: The ball stud comprises a ball head (1) and a rod (4); the ball head (1) is wrapped with a buffer bushing on the outside; the buffer bushing comprises at least two metal layers (3); and a buffer layer (2) is provided between two adjacent metal layers (3).

2. The ball stud assembly according to claim 1, characterized in that: The material of the metal layer (3) is Q420B, and the material of the buffer layer (2) is natural rubber.

3. The ball stud assembly according to claim 2, characterized in that: One of the metal layers (3) is arranged on the outermost layer of the buffer bushing, and one of the metal layers (3) is wrapped around the outer surface of the ball head (1).

4. The ball stud assembly according to claim 2, characterized in that: The metal layer (3) is provided with three layers, and the buffer layer (2) is provided with two layers.

5. A thrust rod assembly, characterized in that: It comprises a ball pin assembly as described in any one of claims 1 to 4, and also comprises a rod body (6), ball head seats (5) are arranged at both ends of the rod body (6), the buffer bushing and the mounting hole (11) of the ball head seat (5) are interference fit, and the rod body (6) and the ball head seat (5) are both made of lightweight materials.

6. The thrust rod assembly according to claim 5, characterized in that: A plurality of hollow interlayers (15) are arranged inside the rod body (6).

7. The thrust rod assembly according to claim 6, characterized in that: The ball head seat (5) comprises a mounting portion and a connecting portion, wherein the mounting portion is provided with a mounting hole (11), and the connecting portion is connected to the corresponding end of the rod body (6) via a bolt (7).

8. The thrust rod assembly according to claim 7, characterized in that: Both ends of the rod body (6) are provided with a plurality of connecting teeth (16), the connecting portion is provided with a plurality of connecting grooves (12), the two side surfaces of the connecting teeth (16) can be in close contact with the groove walls of the corresponding connecting grooves (12), and the bolts (7) penetrate the connecting grooves (12) and the connecting teeth (16).

9. The thrust rod assembly according to claim 6, characterized in that: The mounting hole (11) is a straight cylindrical hole. A mounting groove (13) is coaxially arranged on the hole wall at one end of the mounting hole (11). A retaining spring (8) is arranged in the mounting groove (13). The retaining spring (8) is clamped at the connection between the ball head (1) and the rod (4). A limiting flange (14) is arranged on the hole wall at the other end of the mounting hole (11). The limiting flange (14) can abut against the buffer bushing.

10. The thrust rod assembly according to claim 9, characterized in that: The rod body (6) is made of glass limiting material and has a square cross-section, and the ball head seat (5) is made of aluminum alloy material.

Images