CN218000136U

CN218000136U - Ball pin assembly, chassis and vehicle

Info

Publication number: CN218000136U
Application number: CN202221987961.2U
Authority: CN
Inventors: 严清龙; 向利湘; 罗国政
Original assignee: Chongqing Changan Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2022-12-09
Anticipated expiration: 2032-07-29

Abstract

The utility model discloses a ball stud assembly, chassis and vehicle, including ball stud, ball keyway, gasket and dust cover, the bulb portion of ball stud is located in the ball keyway, and can rotate and swing in the ball keyway, the sealed parcel of dust cover bottom the ball keyway, the pole hypomere outer loop of ball stud is equipped with step spacing arch, step spacing arch includes first spacing portion and is located the second spacing portion of first spacing portion below and the external diameter is less than first spacing portion; the gasket is sleeved on the rod part of the ball stud and located between the first limiting part and the steering knuckle, and the top end of the dust cover is clamped and fixed between the gasket and the second limiting part. Its simple structure can promote sealed effect.

Description

Ball pin assembly, chassis and vehicle

Technical Field

The utility model relates to an automobile parts, concretely relates to bulb round pin assembly, chassis and vehicle.

Background

The automobile swing arm ball stud assembly is an important part for connecting a swing arm and a steering knuckle and ensuring the shock absorption and steering functions of a suspension. A common swing arm ball stud assembly mainly comprises a ball stud, a ball stud seat, a dust cover and the like, the ball stud is fixed on a steering knuckle through the ball stud seat and the swing arm body, and the dust cover is arranged outside the ball stud to prevent dust and silt from entering the ball stud.

In the automobile driving process, the ball stud can swing and rotate along with the motion of the suspension, dust and silt can enter the ball stud assembly through the dust cover, so that steering clamping stagnation, chassis abnormal sound and shaking are caused, and the service life of the swing arm is influenced by the sealing performance of the dust cover. For example, CN207687181U discloses a ball stud assembly structure, in which a ring groove is formed on the ball stud, and a snap ring is added on a dust cover for sealing; CN206513706U discloses a ball stud and a ball stud assembly, wherein a double-sealing rib is arranged on the ball stud, and a snap ring is arranged outside a dust cover for sealing. These structures all have better sealed effect, but the structure is more complicated, has increased the manufacturing difficulty.

Disclosure of Invention

The utility model aims at providing a bulb round pin assembly, chassis and vehicle, its simple structure can promote the sealed effect between bulb round pin and the bulb key seat.

The utility model discloses a ball head pin assembly, including ball head pin, ball head key seat, gasket and dust cover, the bulb portion of ball head pin is located in the ball head key seat, and can rotate and swing in the ball head key seat, the dust cover bottom seals up and wraps up the ball head key seat, the pole portion hypomere outer loop of ball head pin is equipped with step spacing arch, the step spacing arch includes first spacing portion and the second spacing portion that is located first spacing portion below and the external diameter is greater than first spacing portion; the gasket is sleeved on the rod part of the ball stud and located between the first limiting part and the steering knuckle, and the top end of the dust cover is clamped and fixed between the gasket and the second limiting part.

Furthermore, a first sealing lip matched with the bottom surface of the gasket is arranged at the top end edge of the dust cover.

Furthermore, a first through hole for allowing the rod part of the ball stud to penetrate is formed in the top end of the dust cover, and a second sealing lip matched with the outer side wall of the first limiting part is arranged on the inner side wall of the first through hole; the outer diameter of the second limiting part is larger than the inner diameter of the first through hole.

Furthermore, the upper section of the rod part of the ball stud is provided with external threads, and the upper section of the rod part of the ball stud penetrates through a second through hole in the steering knuckle to be in threaded connection with the nut.

Further, the positions of the top end of the dust cover, which are in contact with the gasket and the rod part of the ball stud, are coated with a lubricant.

Furthermore, the top end of the dust cover is internally connected with a framework.

The utility model provides a chassis, includes swing arm and knuckle, the swing arm with pass through between the knuckle the ball head round pin assembly connect, bulb keyway and swing arm fixed connection, the knuckle is connected in the pole portion upper segment of ball head round pin.

A vehicle comprises the chassis.

The pole portion hypomere outer loop of bulb round pin is equipped with the spacing arch of step, the gasket is located between spacing bellied first spacing portion of step and the knuckle, form first heavy sealed, the dust cover top presss from both sides to establish and is fixed in between spacing bellied spacing portion of gasket and the spacing bellied second of step, form the second and heavy sealed, and the setting up of dust cover forms the third and is triple sealed, and then the fixed connection on dust cover top has both been guaranteed, multiple seal structure has been formed between bulb round pin and bulb key seat simultaneously, effectively prevented that the dust from getting into between bulb round pin and the bulb key seat, the sealing effect is improved.

Drawings

Fig. 1 is a schematic structural view of the ball stud assembly of the present invention;

fig. 2 is a schematic structural view of the ball stud of the present invention;

FIG. 3 is an enlarged, partial schematic view of the dust cap tip of the present invention;

fig. 4 is a schematic view of an assembled state of the ball stud assembly according to the present invention;

fig. 5 is a partially enlarged schematic view of the area a in fig. 4.

In the figure, 1-ball stud, 11-ball head, 12-rod, 13-step limiting protrusion, 14-first limiting part, 15-second limiting part, 16-external thread, 2-ball stud seat, 3-gasket, 4-dust cover, 41-first sealing lip, 42-second sealing lip, 43-framework, 44-first through hole, 5-knuckle, 51-second through hole, 6-swing arm and 7-nut.

Detailed Description

To make the objects, technical solutions and advantages of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "vertical", "parallel", "central", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 3, the ball stud assembly includes a ball stud 1, a ball stud seat 2, a gasket 3 and a dust cover 4, wherein a ball head 11 of the ball stud 1 is located in the ball stud seat 2 and can rotate and swing in the ball stud seat 2, and a bottom end of the dust cover 4 is hermetically wrapped on the ball stud seat 2. The outer ring of the lower section of the rod part 12 of the ball stud 1 is provided with a step limiting protrusion 13, and the step limiting protrusion 13 comprises a first limiting part 14 and a second limiting part 15 which is positioned below the first limiting part 14 and has an outer diameter larger than that of the first limiting part 14. The gasket 3 is sleeved on the rod part 12 of the ball stud 1, the gasket 3 is positioned between the first limiting part 14 and the steering knuckle 5, and the top end of the dust cover 4 is clamped and fixed between the gasket 3 and the second limiting part 15. Because the outer ring of the lower section of the rod part 12 of the ball stud 1 is provided with the step limiting protrusion 13, the gasket 3 is positioned between the first limiting part 14 of the step limiting protrusion 13 and the steering knuckle 5 to form a first double seal, the top end of the dust cover 4 is clamped and fixed between the gasket 3 and the second limiting part 15 of the step limiting protrusion 13 to form a second double seal, and the dust cover 4 is arranged to form a third double seal, thereby not only ensuring the fixed connection of the top end of the dust cover 4, but also forming a multiple seal structure between the ball stud 1 and the ball stud seat 2, effectively preventing dust from entering between the ball stud 1 and the ball stud seat 2, having simple structure and improving the sealing effect of the ball stud assembly.

The edge of the top end of the dust cover 4 is provided with a first sealing lip 41 matched with the bottom surface of the gasket 3, and the first sealing lip 41 is pressed to deform to fill a gap between the bottom surface of the gasket 3 and the top end of the dust cover 4, so that the sealing performance is improved.

The top end of the dust cover 4 is provided with a first through hole 44 for the rod part 12 of the ball stud 1 to pass through, a second sealing lip 42 matched with the outer side wall of the first limiting part 14 is arranged on the inner side wall of the first through hole 44, and the second sealing lip 42 can be in interference fit with the outer side wall of the first limiting part 14 after being pressed and deformed to form a sealing structure, so that the sealing effect is ensured.

The upper section of the rod part 12 of the ball stud 1 is provided with the external thread 16, the upper section of the rod part 12 of the ball stud 1 penetrates through the second through hole 51 on the steering knuckle 5 to be in threaded connection with the nut 7, the nut 7 is matched and connected with the external thread 16 on the upper section of the rod part 12 of the ball stud 1, the effective assembly and fixation of the steering part 5 and the rod part 12 of the ball stud 1 are achieved, the operation is convenient and fast, and the connection is stable and reliable.

The positions, contacted with the gasket 3 and the rod part 12 of the ball stud 1, of the top end of the dust cover 4 are coated with lubricating agents, so that the dust cover 4 and the ball stud 1 are lubricated, and the service life of the dust cover 4 is prolonged.

The top end of the dust cover 4 is internally connected with the framework 43, so that the top end of the dust cover 4 has certain structural strength, the deformation direction of the top end of the dust cover 4 after being pressed can be controlled, the gap between the gasket 3 and the ball stud 1 can be effectively filled, and the sealing effect can be improved.

The utility model provides a chassis, includes swing arm 6 and knuckle 5, swing arm 6 with pass through between the knuckle 5 the ball head round pin assembly connect, ball

head key seat

2 and 6 fixed connection of swing arm, knuckle 5 is connected in the 12 upper segments in pole portion of ball head round pin 1.

During specific assembly, referring to fig. 4 and 5, the knuckle 5 is fixed with the ball stud 1 through the nut 7, the top surface of the gasket 3 is in rigid contact with the knuckle 5, and the middle part of the bottom surface of the gasket 3 is in rigid contact with the top surface of the first limiting part 14 to form a first reseal. The top end of the dust cover 4 is extruded to the working position by the gasket 3, the bottom edge of the gasket 3 is in contact with the first sealing lip 41 on the top surface of the dust cover 4, and the second sealing lip 42 on the inner side surface of the dust cover 4 is in contact with the first limiting part 14, so that the interior of the ball pin assembly is sealed, and a second reseal is formed. Meanwhile, when the dust cover 4 moves downwards to the step limiting protrusion 13, the outer diameter of the second limiting part 15 is larger than the inner diameter of the first through hole 44, the dust cover 4 is limited and fixed between the gasket 3 and the second limiting part 15, the dust cover 4 forms third triple seal, the fixed connection of the top end of the dust cover 4 is further guaranteed, meanwhile, a multiple sealing structure is formed between the ball pin 1 and the ball pin seat 2, dust is effectively prevented from entering between the ball pin 1 and the ball pin seat 2, the structure is simple, and the sealing effect of the ball pin assembly is improved.

A vehicle comprises the chassis.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. The utility model provides a ball stud assembly, includes ball stud (1), ball keyway (2), gasket (3) and dust cover (4), ball portion (11) of ball stud (1) are located in ball keyway (2), and can ball keyway (2) internal rotation and swing, dust cover (4) bottom seal parcel ball keyway (2), its characterized in that: a step limiting bulge (13) is arranged on the outer ring of the lower section of the rod part (12) of the ball stud (1), and the step limiting bulge (13) comprises a first limiting part (14) and a second limiting part (15) which is positioned below the first limiting part (14) and has an outer diameter larger than that of the first limiting part (14);

the gasket (3) is sleeved on the rod portion (12) of the ball stud (1) and the gasket (3) is located between the first limiting portion (14) and the steering knuckle (5), and the top end of the dust cover (4) is clamped and fixed between the top end of the gasket (3) and the second limiting portion (15).

2. A ball stud assembly according to claim 1, wherein: and a first sealing lip (41) matched with the bottom surface of the gasket (3) is arranged at the edge of the top end of the dust cover (4).

3. A ball stud assembly according to claim 1 or claim 2, wherein: a first through hole (44) allowing the rod part (12) of the ball stud (1) to penetrate is formed in the top end of the dust cover (4), and a second sealing lip (42) matched with the outer side wall of the first limiting part (14) is arranged on the inner side wall of the first through hole (44); the outer diameter of the second limiting part (15) is larger than the inner diameter of the first through hole (44).

4. A ball stud assembly according to claim 1 or 2, wherein: the upper section of the rod part (12) of the ball stud (1) is provided with an external thread (16), and the upper section of the rod part (12) of the ball stud (1) penetrates through a second through hole (51) in the knuckle (5) to be in threaded connection with the nut (7).

5. A ball stud assembly according to claim 1 or 2, wherein: and a lubricant is coated at the contact position of the top end of the dust cover (4) with the gasket (3) and the rod part (12) of the ball stud (1).

6. A ball stud assembly according to claim 1 or claim 2, wherein: the top end of the dust cover (4) is internally connected with a framework (43).

7. A chassis, includes swing arm (6) and knuckle (5), its characterized in that: the swing arm (6) and the knuckle (5) are connected through a ball pin assembly according to any one of claims 1 to 6, the ball pin seat (2) is fixedly connected with the swing arm (6), and the knuckle (5) is connected to the upper section of a rod part (12) of the ball pin (1).

8. A vehicle, characterized in that: comprising the chassis of claim 7.