Steering tie rod ball head assembly and vehicle

Abstract

The utility model provides a steering tie rod ball head assembly and a vehicle, and relates to the technical field of automobile parts. The steering tie rod ball head assembly comprises a ball head pin, a connector shell, a rear cover plate and a ball bowl. A mounting groove is formed in the connector shell, the ball bowl is arranged in the mounting groove, the ball pin comprises a ball head and a pin shaft connected to the ball head, the ball head is arranged in the mounting groove and rotationally connected to the ball bowl, and the pin shaft extends out of the connector shell; the rear cover plate is arranged on the connector shell and abuts against the ball bowl. A sealing piece is arranged between the connector shell and the rear cover plate and used for sealing a gap between the connector shell and the rear cover plate. According to the steering tie rod ball head assembly, the sealing effect between the rear cover plate and the shell is improved, and leakage of lubricating grease is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of automobile parts, and in particular to a steering rod ball head assembly and a vehicle. Background Art

[0002] The steering rod ball joint assembly is an important component of the automobile steering system. It is responsible for transmitting the power of the steering gear to the wheels, thereby realizing the steering function of the vehicle.

[0003] The traditional automobile steering rod ball joint assembly includes a ball pin, a joint housing, a dust cover, a ball bowl and a rear cover. The ball pin is placed in the joint housing, the ball bowl is placed in the joint housing, and the rear cover is installed. After that, a special press is used to rivet or spin the rear part of the housing. The rear flange of the housing is deformed and then fastened to the rear cover to form a sealing structure. Grease is pre-installed between the ball pin, the joint housing and the ball bowl to reduce friction and prevent wear.

[0004] However, when the rear cover plate and the joint housing are not riveted or spun tightly or the contact surface of the components is uneven, the seal between the rear cover plate and the housing will be loose, the grease in the housing will leak out, and the lubrication will be poor due to lack of oil, resulting in abnormal wear inside the ball head. Utility Model Content

[0005] The present application provides a steering rod ball head assembly and a vehicle, which are used to solve the problem of poor sealing between the rear cover and the housing, leakage of grease in the housing, poor lubrication due to lack of oil, and abnormal wear inside the ball head.

[0006] In one aspect, the present application provides a steering rod ball joint assembly, comprising a ball stud, a joint housing, a rear cover plate, and a ball bowl;

[0007] The joint housing is provided with a mounting groove, the ball bowl is provided in the mounting groove, the ball stud includes a ball head and a pin shaft connected to the ball head, the ball head is provided in the mounting groove and is rotatably connected to the ball bowl, and the pin shaft extends outside the joint housing; the rear cover plate is provided on the joint housing and abuts against the ball bowl; a sealing member is provided between the joint housing and the rear cover plate, and the sealing member is used to seal the gap between the joint housing and the rear cover plate.

[0008] In some embodiments, a sealing groove is formed on the joint housing, and the sealing member is disposed in the sealing groove. The sealing member is located on the outer ring of the ball bowl and abuts against the rear cover plate.

[0009] In some embodiments, the sealing member is a circular sealing ring.

[0010] In some embodiments, a hemispherical groove is provided on one side of the ball bowl facing the ball head, and the ball head is placed in the hemispherical groove. There is a gap between one end of the ball bowl facing the ball head and the top wall of the mounting groove for storing grease.

[0011] In some embodiments, a storage groove is provided on the side of the bowl facing away from the ball head, the storage groove is connected to the hemispherical groove, the storage groove is used to store grease, and the diameter of the storage groove facing the ball head is smaller than the diameter of the storage groove facing away from the ball head.

[0012] In some embodiments, the steering rod ball joint assembly further includes a dust cover, one end of the dust cover is connected to a side of the joint housing away from the cover plate, and the other end of the dust cover is connected to the pin shaft.

[0013] In some embodiments, a lower clamping ring is provided on the joint housing, and one end of the dust cover facing the joint housing is clamped in the lower clamping ring.

[0014] In some embodiments, a clamping portion is provided on the dust cover, and the cross-sectional thickness of the clamping portion increases toward the lower clamping ring. The lower clamping ring is provided with a clamping groove for adapting to the clamping portion, and the clamping portion is inserted into the clamping groove.

[0015] In some embodiments, an upper snap ring is provided on the dust cover. The upper snap ring is located at an end of the dust cover away from the joint housing. The upper snap ring is used to drive the end of the dust cover to adhere to the pin shaft.

[0016] On the other hand, the present application provides a vehicle comprising the above-mentioned steering rod ball head assembly.

[0017] The present application provides a steering rod ball head assembly and a vehicle, in which the steering rod ball head assembly places the ball head on the ball head pin on the ball bowl in the mounting groove of the joint shell, and allows the pin shaft to pass through the outside of the joint shell, and the bottom of the mounting groove is closed by the rear cover plate to form a steering rod ball head assembly; a sealing member is provided between the rear cover plate and the joint shell to further improve the sealing effect between the rear cover plate and the joint shell through the sealing member, so that when the rear cover plate and the joint shell are not riveted or spun tightly or the contact surface of the components is uneven, the rear cover plate and the joint shell are still sealed with the sealing member, thereby reducing the leakage of grease in the joint shell, reducing abnormal wear inside the ball head, and reducing the possibility of external dust and muddy water entering the interior of the joint shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0019] Figure 1 This is a structural cross-sectional view of the steering rod ball head assembly provided in an embodiment of the present application.

[0020] Description of reference numerals:

[0021] 100, ball stud; 110, ball head; 120, pin shaft;

[0022] 200, connector housing; 210, mounting slot;

[0023] 300, rear cover;

[0024] 400, bowl; 410, hemispherical tank; 420, storage tank;

[0025] 500, seals;

[0026] 600, dust cover; 610, clamping portion;

[0027] 700, lower snap ring; 710, snap groove;

[0028] 800, upper snap ring;

[0029] 900. Spacer.

[0030] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0031] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0032] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0033] In this application, unless otherwise specified or limited, the terms "installed," "connected," "fixed," and the like should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication between them; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0034] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0035] The steering rod ball joint assembly is an important component of the automobile steering system. It is responsible for transmitting the power of the steering gear to the wheels, thereby realizing the steering function of the vehicle.

[0036] The traditional automobile steering rod ball joint assembly includes a ball pin, a joint housing, a dust cover, a ball bowl and a rear cover. The ball pin is placed in the joint housing, the ball bowl is placed in the joint housing, and the rear cover is installed. After that, a special press is used to rivet or spin the rear part of the housing. The rear flange of the housing is deformed and then fastened to the rear cover to form a sealing structure. Grease is pre-installed between the ball pin, the joint housing and the ball bowl to reduce friction and prevent wear.

[0037] However, when the rear cover plate and the joint housing are not riveted or spun tightly or the contact surface of the components is uneven, the seal between the rear cover plate and the housing will be loose, the grease in the housing will leak out, and the lubrication will be poor due to lack of oil, resulting in abnormal wear inside the ball head.

[0038] In order to solve the above problems, the present application provides a steering rod ball head assembly and a vehicle, wherein the steering rod ball head assembly places the ball head on the ball head pin on the ball bowl in the mounting groove of the joint shell, and allows the pin shaft to pass through the outside of the joint shell, and closes the bottom of the mounting groove through the rear cover plate to form a steering rod ball head assembly; a seal is provided between the rear cover plate and the joint shell to further improve the sealing effect between the rear cover plate and the joint shell through the seal, so that when the rear cover plate and the joint shell are not riveted or spun tightly or the contact surface of the components is uneven, there is still a seal between the rear cover plate and the joint shell, thereby reducing the leakage of grease in the joint shell, reducing abnormal wear inside the ball head, and at the same time reducing the possibility of external dust and muddy water entering the interior of the joint shell.

[0039] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0040] This application provides a steering rod ball head assembly, referring to Figure 1 The steering rod ball joint assembly includes a ball stud 100, a joint housing 200, a rear cover plate 300 and a ball bowl 400.

[0041] A mounting groove 210 is provided on the joint housing 200, and a ball bowl 400 is provided in the mounting groove 210. The ball stud 100 includes a ball head 110 and a pin shaft 120 connected to the ball head 110. The ball head 110 is provided in the mounting groove 210 and is rotatably connected to the ball bowl 400. The pin shaft 120 extends outside the joint housing 200. The rear cover plate 300 is provided on the joint housing 200 and abuts against the ball bowl 400. A seal 500 is provided between the joint housing 200 and the rear cover plate 300. The seal 500 is used to seal the gap between the joint housing 200 and the rear cover plate 300.

[0042] By adopting the above technical solution, a seal 500 is provided between the rear cover plate and the connector housing 200, so as to further improve the sealing effect between the rear cover plate and the connector housing 200 through the seal 500, so that when the rear cover plate 300 and the connector housing 200 are not riveted or spun tightly or the contact surface of the components is uneven, the rear cover plate 300 and the connector housing 200 are still sealed by the seal 500, thereby reducing the leakage of grease in the connector housing 200, reducing abnormal wear inside the ball head 110, and reducing the possibility of external dust and muddy water entering the interior of the connector housing 200.

[0043] The mounting groove 210 extends through the connector housing 200. The mounting groove 210 comprises a first groove body, a second groove body, and a third groove body, which are interconnected in sequence. The first groove body is annular, and the ball bowl 400 is placed within the first groove body. The diameter of the first groove body is the same as the outer diameter of the ball bowl 400. The second groove body is an arc-shaped groove that fits the ball of the ball head 110. The diameter of the second groove body near the first groove body is larger than the diameter of the second groove body near the first groove body, and a step is formed at the connection between the second and first groove bodies. The diameter of the upper end of the second groove body is narrowed to prevent the ball head 110 from separating from the connector housing. The third groove body is connected to the second groove body. The diameter of the third groove body near the second groove body is larger than the diameter of the third groove body near the second groove body, resulting in a funnel shape. The diameter of the third groove body near the second groove body is larger than the diameter of the pin 120, providing space for the pin 120 to rotate.

[0044] In some embodiments, a sealing groove is formed on the joint housing 200 , and the sealing member 500 is disposed in the sealing groove. The sealing member 500 is located on the outer ring of the ball bowl 400 and abuts against the rear cover plate 300 .

[0045] The sealing groove is located on the outside of the mounting groove 210, and the seal 500 is installed in the sealing groove. Even if a gap appears between the rear cover plate 300 and the joint housing 200, the seal 500 can be used to seal again, thereby improving the sealing effect, reducing the leakage of grease, and reducing the entry of external mud and sand.

[0046] Exemplarily, the sealing member 500 is a circular sealing ring.

[0047] After being mounted on the connector housing 200, the rear cover 300 is pressed against the sealing ring, causing the sealing ring to have a certain degree of compression, thereby improving the sealing effect between the connector housing 200 and the rear cover 300. In other embodiments, the sealing member 500 may also use a sealing ring with a rectangular or trapezoidal cross-section, etc., which will not be described in detail here.

[0048] In some embodiments, a hemispherical groove 410 is opened on the side of the ball bowl 400 facing the ball head 110, and the ball head 110 is placed in the hemispherical groove 410. There is a gap between the end of the ball bowl 400 facing the ball head 110 and the top wall of the mounting groove 210 for storing grease.

[0049] Specifically, the bowl 400 is placed in the first groove body, and the hemispherical groove 410 and the second groove body are both adapted to the ball head 110, so that the ball head 110 is placed between the hemispherical groove 410 and the second groove body. The diameter of the end of the hemispherical groove 410 facing the ball head 110 is larger than the diameter of the end of the hemispherical groove 410 facing away from the ball head 110, so that the bowl 400 and the second groove body cooperate to achieve the upper and lower limit of the ball head 110. A gap is formed between the end of the hemispherical groove 410 facing the ball head 110 and the first groove body, so that grease can be placed in the gap to lubricate the ball head 110.

[0050] In some embodiments, a storage groove 420 is opened on the side of the ball bowl 400 facing away from the ball head 110, and the storage groove 420 is connected to the hemispherical groove 410. The storage groove 420 is used to store grease, and the diameter of the storage groove 420 facing the ball head 110 is smaller than the diameter of the storage groove 420 facing away from the ball head 110.

[0051] The storage groove 420 is trumpet-shaped to store more grease. At the same time, the bottom cross-section of the ball bowl 400 is reduced in thickness, which is beneficial for compressing the ball bowl 400 during the rotation of the ball head 110 and reducing the resistance to the rotation of the ball head 110.

[0052] In some embodiments, the bowl 400 is an elastic rubber ring.

[0053] During installation, the rear cover 300 abuts and secures against the bottom of the bowl 400, creating a seal between the bowl 400 and the rear cover 300, reducing grease leakage. Furthermore, the rubber bowl 400 provides a certain amount of compression during the rotation of the ball head 110, reducing friction and wear on the ball head 110.

[0054] In some embodiments, the steering rod ball joint assembly further includes a dust cover 600 , one end of the dust cover 600 is connected to a side of the joint housing 200 away from the cover plate, and the other end of the dust cover 600 is connected to the pin 120 .

[0055] The dust cover 600 is a flexible cover, which may be a rubber cover, and can be changed according to the rotation of the pin 120 so that the dust cover 600 is always connected to the pin 120 to prevent dust from entering the connector housing 200 from above.

[0056] A spacer sleeve 900 is further provided on the pin shaft 120 . The spacer sleeve 900 is located inside the dust cover 600 to further improve the dustproof effect and block the gap between the pin shaft 120 and the installation groove 210 .

[0057] In some embodiments, a lower snap ring 700 is provided on the connector housing 200 , and one end of the dust cover 600 facing the connector housing 200 is snapped into the lower snap ring 700 .

[0058] The lower snap ring 700 is fixed on the joint housing 200. For example, the lower snap ring 700 can be clamped on the joint housing 200 or fixed on the joint housing 200 by welding.

[0059] In some embodiments, a clamping portion 610 is provided on the dust cover 600, and the cross-sectional thickness of the clamping portion 610 increases toward the lower clamping ring 700. The lower clamping ring 700 is provided with a clamping groove 710 for adapting to the clamping portion 610, and the clamping portion 610 is inserted into the clamping groove 710.

[0060] The cross-sectional thickness of the clamping portion 610 at the bottom of the dust cover 600 gradually increases toward the lower clamping ring 700 to facilitate the clamping between the dust cover 600 and the lower clamping ring 700 .

[0061] The cross-section of the lower snap ring 700 is U-shaped to form a snap groove 710. Furthermore, the distance between the two side walls of the snap groove 710 increases toward the side away from the bottom of the snap groove 710, so as to facilitate the engagement with the snap portion 610. The snap portion 610 is snapped into the snap groove 710, reducing the possibility of the snap portion 610 and the lower snap ring 700 being separated, thereby improving the stability of the connection.

[0062] Furthermore, the lower snap ring 700 is an elastic ring, so as to facilitate the installation of the lower snap ring 700 on the joint housing 200 and facilitate the connection between the lower snap ring 700 and the clamping portion 610 .

[0063] In some embodiments, an upper snap ring 800 is provided on the dust cover 600 . The upper snap ring 800 is located at one end of the dust cover 600 away from the connector housing 200 . The upper snap ring 800 is used to drive the end of the dust cover 600 to adhere to the pin 120 .

[0064] Specifically, the upper snap ring 800 is embedded in the dust cover 600 . The upper snap ring 800 is an elastic ring, so as to drive the dust cover 600 to adhere to the pin 120 to reduce external dust from entering the interior of the joint housing 200 .

[0065] An embodiment of the present application also provides a vehicle, comprising the above-mentioned steering rod ball head assembly.

[0066] Among them, the steering rod ball head assembly in this embodiment has the same structure as the steering rod ball head assembly provided in any of the above embodiments, and can bring the same or similar technical effects. They will not be described one by one here, and please refer to the description of the above embodiments for details.

[0067] In the vehicle provided by the present application, in the steering rod ball head assembly, the ball head 110 on the ball head pin 100 is placed on the ball bowl 400 in the mounting groove 210 of the joint housing 200, and the pin shaft 120 is passed through the outside of the joint housing 200, and the bottom of the mounting groove 210 is closed by the rear cover plate 300 to form a steering rod ball head 110 assembly; a seal 500 is provided between the rear cover plate and the joint housing 200 to further improve the sealing effect between the rear cover plate and the joint housing 200 through the seal 500, so that when the rear cover plate 300 and the joint housing 200 are not riveted or spun tightly or the contact surface of the components is uneven, the rear cover plate 300 and the joint housing 200 are still sealed with the seal 500, thereby reducing the leakage of grease in the joint housing 200, reducing abnormal wear inside the ball head 110, and at the same time reducing the possibility of external dust and muddy water entering the interior of the joint housing 200.

[0068] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the present invention. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered merely as exemplary, and the true scope and spirit of the present invention are indicated by the following claims.

[0069] It should be understood that the present application is not limited to the exact structure described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A steering rod ball head assembly, characterized in that: It comprises a ball stud (100), a joint housing (200), a rear cover plate (300) and a ball bowl (400); The joint housing (200) is provided with a mounting groove (210), the ball bowl (400) is arranged in the mounting groove (210), the ball stud (100) comprises a ball head (110) and a pin shaft (120) connected to the ball head (110), the ball head (110) is arranged in the mounting groove (210) and is rotatably connected to the ball bowl (400), and the pin shaft (120) extends outside the joint housing (200); the rear cover plate (300) is provided on the joint housing (200) and abuts against the ball bowl (400); a sealing member (500) is provided between the joint housing (200) and the rear cover plate (300), and the sealing member (500) is used to seal the gap between the joint housing (200) and the rear cover plate (300).

2. The steering rod ball head assembly according to claim 1, characterized in that: A sealing groove is provided on the joint housing (200), and the sealing member (500) is arranged in the sealing groove. The sealing member (500) is located on the outer ring of the ball bowl (400) and abuts against the rear cover plate (300).

3. The steering rod ball head assembly according to claim 2, characterized in that: The sealing member (500) is a circular sealing ring.

4. The steering rod ball head assembly according to any one of claims 1 to 3, characterized in that: A hemispherical groove (410) is provided on one side of the ball bowl (400) facing the ball head (110), and the ball head (110) is placed in the hemispherical groove (410). A gap is provided between one end of the ball bowl (400) facing the ball head (110) and the top wall of the mounting groove (210) for storing grease.

5. The steering rod ball head assembly according to claim 4, characterized in that: A storage groove (420) is provided on a side of the ball bowl (400) facing away from the ball head (110), wherein the storage groove (420) is connected to the hemispherical groove (410), and the storage groove (420) is used to store grease, and the diameter of the storage groove (420) at one end facing the ball head (110) is smaller than the diameter of the storage groove (420) at one end facing away from the ball head (110).

6. The steering rod ball head assembly according to any one of claims 1 to 3, characterized in that: It also includes a dust cover (600), one end of which is connected to a side of the joint housing (200) away from the rear cover (300), and the other end of which is connected to the pin shaft (120).

7. The steering rod ball head assembly according to claim 6, characterized in that: A lower snap ring (700) is provided on the joint housing (200), and one end of the dust cover (600) facing the joint housing (200) is snapped into the lower snap ring (700).

8. The steering rod ball head assembly according to claim 7, characterized in that: The dust cover (600) is provided with a clamping portion (610), the cross-sectional thickness of the clamping portion (610) increases toward the lower clamping ring (700), and the lower clamping ring (700) is provided with a clamping groove (710) for matching with the clamping portion (610), and the clamping portion (610) is inserted into the clamping groove (710).

9. The steering rod ball head assembly according to claim 6, characterized in that: An upper snap ring (800) is provided on the dust cover (600), and the upper snap ring (800) is located at one end of the dust cover (600) away from the joint housing (200). The upper snap ring (800) is used to drive the end of the dust cover (600) to adhere to the pin shaft (120).

10. A vehicle, characterized in that: The invention comprises a steering rod ball head assembly according to any one of claims 1 to 9.

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