Automobile tie rod ball head

Abstract

The utility model relates to an automobile tie rod ball head, relates to automobile ball head technical field, including shell, end cover, ball body, ball pin, tie rod, ball seat and adjusting component, the inside of shell is equipped with ball groove and connecting groove, the ball body is rotatingly connected in the ball groove, the inside of shell and end cover are equipped with screw thread, and the screw thread is equipped with screw thread. One end of the end cover is in threaded connection with the interior of the connecting groove, a sliding groove is formed in the end cover, the ball seat is in sliding connection with the interior of the sliding groove and abuts against the ball body, one end of the ball pin penetrates through the shell to be in threaded connection with the ball body, and one end of the pull rod is welded to the outer surface of the shell. The adjusting assembly is used for supporting the ball seat and adjusting the pressure of the ball seat on the ball body. According to the ball head assembly, long-term work of the ball head assembly can be guaranteed by replacing the ball body which is an easy-to-wear part, and the use cost of the ball head assembly and waste of resources are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of automotive ball joints, and particularly to an automotive tie rod ball joint. Background Art

[0002] An automotive ball joint, also known as a universal joint, is a connecting component between the steering gear and the steering wheel of an automobile. It is one of the key components in the automotive suspension system and is a safety component that ensures the steering and bouncing of the steering wheels.

[0003] Currently, a Chinese utility model patent application with a publication date of August 4, 2023 and a publication number of CN219472562U provides an automotive ball joint assembly, including a ball seat and a ball head. An anti-loosening frame mechanism is provided inside the ball seat. The anti-loosening frame mechanism includes an installation chamber provided inside the ball seat. An elastic ring is fixedly installed on the side surface of the inner cavity of the installation chamber. Two semi-circular clamping blocks are fixedly installed on the surface of the elastic ring. The ball head is movably installed between the two semi-circular clamping blocks. A ball head connecting rod penetrating through the outer surface of the ball seat is fixedly installed on the surface of the ball head. In this automotive ball joint assembly, by providing an elastic ring and semi-circular clamping blocks inside the ball seat, with the ball head disposed between the two semi-circular clamping blocks, the semi-circular clamping blocks are squeezed by the elastic piece, so that the semi-circular clamping blocks are in contact with the ball head to clamp the ball head. When the ball head wears, under the action of the elastic ring, the semi-circular clamping blocks are always in contact with the ball head, thereby preventing the ball head from rattling inside the ball seat.

[0004] In a related automotive tie rod ball joint, although it can prevent the ball head from rattling with the ball seat when the ball head wears slightly, when the ball head wears severely, the ball head will slide smoothly with the clamping block, making the entire ball joint assembly unable to be used normally. Also, because the ball seat is an integral structure and the ball head cannot be replaced, in this case, the entire ball joint assembly often needs to be replaced, resulting in a high usage cost and waste of resources. Summary of the Utility Model

[0005] Embodiments of the present application provide an automotive tie rod ball joint, which can solve the technical problem in the related art that the ball head cannot be replaced after severe wear.

[0006] Embodiments of the present application provide an automotive tie rod ball joint, including: a housing, an end cover, a sphere, a ball head pin, a tie rod, a ball seat, and an adjusting assembly. A ball groove and a connection groove are provided inside the housing. The sphere is rotatably connected inside the ball groove. Threads are provided inside the housing and at one end of the end cover. One end of the end cover is threadedly connected inside the connection groove. A sliding groove is provided inside the end cover. The ball seat is slidably connected inside the sliding groove and abuts against the sphere. One end of the ball head pin passes through the housing and is threadedly connected to the sphere. One end of the tie rod is welded on the outer surface of the housing. The adjusting assembly is used to support the ball seat and adjust the pressure of the ball seat on the sphere.

[0007] In the technical solution described above in the embodiments of the present application, it has at least the following technical effects: When the vehicle is running, the sphere will continuously rotate and wear inside the spherical groove. When the surface of the sphere is severely worn and the ball head cannot be used normally, the housing can be fixed with a tool and the hexagon at one end of the end cap can be turned to disengage the end cap from the connection groove. Then, the sphere and the ball head pin can be taken out from the connection groove, the ball head pin can be unscrewed from the sphere and installed on a new sphere. Then, the ball head pin is passed through the connection groove and the housing to make the sphere return to the inside of the spherical groove, and then the end cap is screwed back to fix the sphere. The long-term operation of the ball head assembly can be ensured by replacing the easily worn part, the sphere, and the use cost of the ball head assembly and the waste of resources can be reduced.

[0008] A ball head of an automobile tie rod provided in the embodiments of the present application can ensure the long-term operation of the ball head assembly by replacing the easily worn part, the sphere, and reduce the use cost of the ball head assembly and the waste of resources.

[0009] In some embodiments, the adjusting assembly includes a spring, a threaded plate, and an adjusting block. Threads are provided on the inner peripheral surface of the end cap and the side surface of the threaded plate. The threaded plate is threadedly connected inside the sliding groove. The spring is arranged inside the sliding groove. One end of the spring abuts against the ball seat, and the other end of the spring abuts against the threaded plate. A through hole is provided at the end of the end cap away from the sphere, and the adjusting block is arranged inside the through hole and fixedly connected to the threaded plate.

[0010] In some embodiments, a spring post is fixedly arranged on the surface of the threaded plate away from the adjusting block, and the spring post passes through the spring.

[0011] In some embodiments, a fixing plate is sleeved on the ball head pin, and the fixing plate is fixedly connected to the ball head pin. A dust cover is arranged at the end of the housing away from the end cap. A connecting mechanism is arranged on the dust cover. One end of the dust cover is fixedly connected to the housing through the connecting mechanism, and the other end of the dust cover is fixedly connected to the fixing plate through the connecting mechanism.

[0012] In some embodiments, the connecting mechanism includes a first connecting ring and a second connecting ring. The first connecting ring is fixedly connected to one end of the dust cover, and the second connecting ring is fixedly connected to the other end of the dust cover. A plurality of threaded holes are provided on the first connecting ring, the second connecting ring, the fixing plate, and the housing. The first connecting ring is bolted to the fixing plate, and the second connecting ring is bolted to the housing.

[0013] In some embodiments, a sealing ring is arranged between the first connecting ring and the fixing plate and between the second connecting ring and the housing.

[0014] In some embodiments, a dust cover is sleeved on one end of the end cover away from the housing, and the inner peripheral surface of the dust cover is in interference fit with the outer peripheral surface of the end cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. 1 is a schematic diagram of the overall structure of a ball joint for an automobile provided by an embodiment of the present application;

[0016] Figure 2 FIG. 2 is a cross-sectional view of a ball joint for an automobile provided by an embodiment of the present application;

[0017] Figure 3 FIG. 3 is Figure 2 an enlarged view of part A in FIG. 2;

[0018] Figure 4 FIG. 4 is Figure 2 an enlarged view of part B in FIG. 2;

[0019] Figure 5 FIG. 5 is Figure 2 an enlarged view of part C in FIG. 2;

[0020] Figure 6 FIG. 6 is an exploded structural diagram of a ball joint for an automobile provided by an embodiment of the present application.

[0021] Among them, the reference numerals in the figures are as follows:

[0022] 1, housing; 11, ball groove; 12, connection groove; 2, end cover; 21, sliding groove; 22, through hole; 23, dust cover; 3, sphere; 4, ball head pin; 41, fixing plate; 5, pull rod; 6, ball seat; 71, spring; 72, threaded plate; 721, spring post; 73, adjusting block; 8, dust sleeve; 91, first connection ring; 911, sealing ring; 92, second connection ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Based on this, in order to improve the problem that the ball head in the related art cannot be replaced after serious wear, the embodiments of the present application provide the following solutions.

[0024] The following Figures 1-6 will further describe the present utility model in detail.

[0025] This embodiment discloses a ball joint for an automobile, which includes a housing 1, an end cover 2, a sphere 3, a ball head pin 4, a pull rod 5, a ball seat 6, and an adjusting assembly;

[0026] A ball groove 11 and a connection groove 12 are formed inside the housing 1. The sphere 3 is rotatably connected inside the ball groove 11. Threads are provided both inside the housing 1 and at one end of the end cap 2. One end of the end cap 2 is threadedly connected inside the connection groove 12. A sliding groove 21 is formed inside the end cap 2. The ball seat 6 is slidably connected inside the sliding groove 21 and abuts against the sphere 3. One end of the ball head pin 4 passes through the housing 1 and is threadedly connected to the sphere 3. One end of the pull rod 5 is welded to the outer surface of the housing 1; The adjusting assembly includes a spring 71, a threaded plate 72 and an adjusting block 73. Threads are provided both on the inner circumferential surface of the end cap 2 and on the side surface of the threaded plate 72. The threaded plate 72 is threadedly connected inside the sliding groove 21. The spring 71 is arranged inside the sliding groove 21. One end of the spring 71 abuts against the ball seat 6, and the other end of the spring 71 abuts against the threaded plate 72. A through hole 22 is formed at one end of the end cap 2 away from the sphere 3. The adjusting block 73 is arranged inside the through hole 22 and is fixedly connected to the threaded plate 72. A spring post 721 is fixedly arranged on the side of the threaded plate 72 away from the adjusting block 73. The spring post 721 passes through the spring 71;

[0027] A fixing plate 41 is sleeved on the ball head pin 4. The fixing plate 41 is fixedly connected to the ball head pin 4. A dust cover 8 is arranged at one end of the housing 1 away from the end cap 2. A connection mechanism is arranged on the dust cover 8. The connection mechanism includes a first connection ring 91 and a second connection ring 92. The first connection ring 91 is fixedly connected to one end of the dust cover 8. The second connection ring 92 is fixedly connected to the other end of the dust cover 8. A plurality of threaded holes are formed on the first connection ring 91, the second connection ring 92, the fixing plate 41 and the housing 1. The first connection ring 91 is bolted to the fixing plate 41, and the second connection ring 92 is bolted to the housing 1. Sealing rings 911 are arranged between the first connection ring 91 and the fixing plate 41 and between the second connection ring 92 and the housing 1.

[0028] As can be seen from the above, for a ball joint of an automobile provided in an embodiment of the present application, when the ball joint assembly works, the ball pin 4 will continuously drive the ball 3 to rotate inside the ball groove 11. The dust cover 8 made of rubber material will deform with the rotation of the ball pin 4, which will not hinder the rotation of the ball pin 4 and can block sundries such as dust and liquid in the air outside the housing 1 from entering the inside of the ball groove 11 through the gap between the ball pin 4 and the housing 1, avoiding the blockage of the ball groove 11 by external foreign objects and making the rotation of the ball 3 not smooth, and playing a protective role for the components inside the housing 1; after long-term use, the dust cover 8 will lose elasticity or be damaged by friction with external objects. When the dust cover 8 needs to be replaced, the bolts connecting the first connecting ring 91 to the fixing plate 41 and the second connecting ring 92 to the housing 1 can be unscrewed, and then the first connecting ring 91 on the new dust cover 8 can be connected to the fixing plate 41, and the second connecting ring 92 can be connected to the housing 1; when the vehicle bumps, the ball pin 4 may push the ball 3 to impact the ball seat 6. At this time, the ball seat 6 applies pressure to the spring 71 to compress the spring 71, and the ball 3 pushes the ball seat 6 to slide inside the sliding groove 21, which can play a buffering role for the impact between the ball 3 and the ball seat 6, preventing the ball 3 from being damaged due to long-term impact on the ball seat 6; the spring 71 will maintain the pressure on the ball seat 6, so that the top of the ball seat 6 is always in close contact with the ball 3. After the surface of the ball 3 is slightly worn due to long-term operation of the ball joint assembly, the spring 71 can ensure the close fit between the ball seat 6 and the ball 3, and between the ball 3 and the ball groove 11, preventing the generation of cavities between the ball 3 and the ball seat 6 or the ball groove 11 and causing abnormal offset of the ball 3 and the ball pin 4; after the ball joint assembly works for a long time, the gap between the ball 3 and the ball seat 6 will gradually increase, and the elastic force of the spring 71 will also gradually decrease. At this time, the adjusting block 73 can be screwed by a tool, and the adjusting block 73 drives the threaded plate 72 to rotate. The threaded plate 72 approaches the ball seat 6 inside the sliding groove 21 under the push of the thread, and the threaded plate 72 and the ball seat 6 compress the spring 71 to increase the elastic force of the spring 71, and the elastic force of the spring 71 on the ball seat 6 can be adjusted to an appropriate size. The spring column 721 can prevent the position of the spring 71 from shifting, and when the threaded plate 72 is adjusted to a certain height and contacts the ball seat 6, the threaded plate 72 cannot continue to rise, which can remind the user that the pressure of the spring 71 cannot be increased any more, avoiding the user from adjusting the pressure of the spring 71 too large and causing the pressure of the ball seat 6 on the ball 3 to be too large and making the rotation of the ball 3 not smooth; when the surface of the ball 3 is severely worn and the ball joint cannot be used normally, the dust cover 8 can be removed first, and then the housing 1 can be fixed by a tool and the hexagon body at one end of the end cover 2 can be screwed to separate the end cover 2 from the connecting groove 12, and then the ball pin 4 can be unscrewed from the ball 3, the ball 3 can be taken out from the inside of the housing 1, then the ball pin 4 can be connected to a new ball 3 and the ball 3 can be put back into the ball groove 11, and then the end cover 2 can be screwed back to fix the ball 3, and then the dust cover 8 can be installed. By replacing the easily worn part, the ball 3, the long-term operation of the ball joint assembly can be ensured, and the use cost of the ball joint assembly and the waste of resources can be reduced.

[0029] In some embodiments, referring to Figure 1 , a dust cover 23 is sleeved on one end of the end cover 2 away from the housing 1, and the inner circumferential surface of the dust cover 23 is in interference fit with the outer circumferential surface of the end cover 2.

[0030] With such a setting, the dust cover 23 can prevent dust, foreign objects, etc. from entering the chute 21 through the through hole 22 to block the chute 21, and play a protective role for the internal structure of the end cover 2.

[0031] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An automotive tie rod ball head, characterized in that: It includes a housing (1), an end cap (2), a sphere (3), a ball head pin (4), a pull rod (5), a ball seat (6) and an adjusting assembly. A ball groove (11) and a connecting groove (12) are provided inside the housing (1). The sphere (3) is rotatably connected inside the ball groove (11). Threads are provided both inside the housing (1) and at one end of the end cap (2). One end of the end cap (2) is threadedly connected inside the connecting groove (12). A sliding groove (21) is provided inside the end cap (2). The ball seat (6) is slidably connected inside the sliding groove (21) and abuts against the sphere (3). One end of the ball head pin (4) passes through the housing (1) and is threadedly connected to the sphere (3). One end of the pull rod (5) is welded to the outer surface of the housing (1). The adjusting assembly is used to support the ball seat (6) and adjust the pressure of the ball seat (6) on the sphere (3).

2. The ball joint for vehicle tie rod according to claim 1, characterized in that: The adjusting assembly includes a spring (71), a threaded plate (72) and an adjusting block (73). Threads are provided both on the inner circumferential surface of the end cap (2) and on the side surface of the threaded plate (72). The threaded plate (72) is threadedly connected inside the sliding groove (21). The spring (71) is arranged inside the sliding groove (21). One end of the spring (71) abuts against the ball seat (6), and the other end of the spring (71) abuts against the threaded plate (72). A through hole (22) is provided at one end of the end cap (2) away from the sphere (3). The adjusting block (73) is arranged inside the through hole (22) and is fixedly connected to the threaded plate (72).

3. The ball joint of an automotive tie rod according to claim 2, characterized in that: A spring post (721) is fixedly arranged on the surface of the threaded plate (72) away from the adjusting block (73). The spring post (721) passes through the inside of the spring (71).

4. A ball joint for an automotive tie rod according to any one of claims 1-3, characterized in that: A fixing plate (41) is sleeved on the ball head pin (4). The fixing plate (41) is fixedly connected to the ball head pin (4). A dust cover (8) is provided at one end of the housing (1) away from the end cap (2). A connecting mechanism is provided on the dust cover (8). One end of the dust cover (8) is fixedly connected to the housing (1) through the connecting mechanism, and the other end of the dust cover (8) is fixedly connected to the fixing plate (41) through the connecting mechanism.

5. The ball joint for vehicle tie rod according to claim 4, characterized in that: The connecting mechanism includes a first connecting ring (91) and a second connecting ring (92). The first connecting ring (91) is fixedly connected to one end of the dust cover (8). The second connecting ring (92) is fixedly connected to the other end of the dust cover (8). A plurality of threaded holes are provided on the first connecting ring (91), the second connecting ring (92), the fixing plate (41) and the housing (1). The first connecting ring (91) is bolted to the fixing plate (41), and the second connecting ring (92) is bolted to the housing (1).

6. The ball joint for vehicle tie rod according to claim 5, wherein: Sealing rings (911) are provided between the first connecting ring (91) and the fixing plate (41) and between the second connecting ring (92) and the housing (1).

7. The ball joint of an automobile tie rod according to claim 6, characterized in that: A dust cover (23) is sleeved on the end of the end cap (2) away from the housing (1). The inner circumferential surface of the dust cover (23) is in interference fit with the outer circumferential surface of the end cap (2).

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