Automobile chassis suspension control arm ball pin assembly

Abstract

The utility model discloses an automobile chassis suspension control arm ball pin assembly, and relates to the technical field of automobile suspension systems, the automobile chassis suspension control arm ball pin assembly comprises a control arm body, the end part of the control arm body is provided with a ball head hole, a ball pin assembly is embedded in the ball head hole, the ball pin assembly comprises a ball pin seat and a ball pin, the ball pin comprises a ball head and a ball pin rod, the ball head is embedded in the ball pin seat, and the ball head is embedded in the ball pin rod. Spherical grease is injected into the gap between the ball pin seat and the ball pin, and the ball pin seat is embedded into a ball head hole of the control arm body. The ball pin assembly is fixed in the control arm body through the spin riveting technology, meanwhile, grease is injected into a riveting opening, the air tightness is improved, meanwhile, the movement swing angle and rigidity of a ball pin are guaranteed, and the use performance of the ball pin is improved. The dustproof cover can prevent external substances such as muddy water from entering the control arm ball pin assembly, and normal work of the control arm ball pin assembly is prevented from being affected.

Description

Technical Field

[0001] This utility model belongs to the field of semiconductor process technology, and specifically relates to a ball pin assembly for an automotive chassis suspension control arm. Background Technology

[0002] With the development of the automotive industry, the requirements for lightweighting are becoming increasingly stringent. Traditional multi-angle, irregularly shaped sheet metal welded control arm assemblies are gradually being replaced by aluminum alloy control arm assemblies. Considering the complexity of product structures and increasingly fierce market competition, the need to improve production efficiency is becoming stronger. Traditional ball-pin assembly structures have drawbacks such as complex structure, numerous sub-parts, many processes, long process paths, complex debugging, and defective sealing effects. Therefore, new ball-pin assembly structures are constantly being introduced.

[0003] For example, utility model with publication number CN109058286A discloses a control arm ball pin assembly and a vehicle equipped with the control arm ball pin assembly. This ball pin assembly is a riveted structure, which is insufficient in terms of airtightness. For example, utility model with publication number CN105710827A discloses an assembly tooling and assembly method for a ball pin of an automotive ball pin control arm. This ball pin assembly is made of steel and uses a press riveting process. It is difficult to control the axial stiffness of the ball pin, and gaps are prone to occur, affecting performance. Utility Model Content

[0004] In view of the problems mentioned in the background art, the purpose of this utility model is to provide an automobile chassis suspension control arm ball pin assembly to solve the problems mentioned in the background art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A ball joint assembly for a car chassis suspension control arm includes a control arm body, a ball head hole at the end of the control arm body, a ball joint assembly embedded in the ball head hole, the ball joint assembly including a ball joint seat and a ball joint, the ball joint including a ball head and a ball joint rod, the ball head being embedded in the ball joint seat, spherical grease being injected into the gap between the ball joint seat and the ball joint, and the ball joint seat being embedded in the ball head hole of the control arm body.

[0007] As a preferred technical solution, the ball pin seat is a sphere with a flattened top and a hollow interior. The ball pin assembly also includes a plug seat, which is tubular and has an arc-shaped inner wall at the bottom. The ball pin rod passes through the plug seat, and the inner wall at the bottom of the plug seat contacts and connects with the outer wall at the top of the ball pin seat. The plug seat is embedded in the ball head hole of the control arm body.

[0008] As a preferred technical solution, the upper end of the ball pin seat is designed with multiple sets of through extrusion seams and oil storage pits.

[0009] As a preferred technical solution, the control arm body is made of aluminum alloy.

[0010] As a preferred technical solution, grease is injected into the gap between the pin seat and the ball head hole.

[0011] As a preferred technical solution, it also includes a dust cover, which is a hollow, irregularly shaped tube. The inner wall of the top of the dust cover is tightly fitted with the outer wall of the ball pin rod, and the bottom of the dust cover is fixedly installed on the outer wall of the control arm body by a snap ring.

[0012] As a preferred technical solution, the part where the top of the dust cover fits against the ball pin is made of elastic material.

[0013] Beneficial effects

[0014] The ball pin assembly and grease at the opening improve airtightness while ensuring the ball pin's swing angle and rigidity, thus enhancing its performance. The dust cover prevents dust from entering and affecting the ball pin's swing, and protects the ball pin assembly from falling off.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] Figure 1 This is a schematic cross-sectional view of the ball pin assembly of the chassis suspension control arm of a new energy vehicle according to the present invention.

[0017] Figure 2 This is an exploded view of the structure of a ball pin assembly for a car chassis suspension control arm proposed in this utility model.

[0018] Reference numerals in the attached drawings: 1. Control arm body; 2. Ball pin seat; 3. Ball pin; 4. Block seat; 5. Dust cover; 6. Snap ring. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] Example 1

[0021] refer to Figures 1 to 2 The automobile chassis suspension control arm ball pin assembly described in this embodiment includes a control arm body 1. A ball head hole is opened at the end of the control arm body 1, and a ball pin assembly is embedded in the ball head hole. After injecting grease into the riveting interface between the ball head hole and the ball pin assembly, the dust cover assembly is then installed on the control arm body 1.

[0022] Preferably, the control arm body 1 is made of aluminum alloy.

[0023] The ball pin assembly includes a ball pin seat 2, a ball pin 3, and a plug seat 4. The ball pin seat 2 is a sphere with a flattened top and a hollow interior. Multiple sets of extrusion slits and oil storage pits are opened along the grooved edge at the upper end of the sphere. The ball pin 3 includes a ball head and a ball pin rod. The ball head is embedded in the ball pin seat 2. The plug seat 4 is tubular and the inner wall at the bottom end of the plug seat 4 is arc-shaped. The ball pin rod passes through the plug seat 4. The inner wall at the bottom end of the plug seat 4 is in contact with the outer wall at the upper end of the ball pin seat 2. Spherical grease is injected into the oil storage pit. Both the ball pin seat 2 and the plug seat 4 are embedded in the ball head hole of the control arm body 1.

[0024] The dust cover assembly includes a dust cover 5 and a retaining spring 6. The dust cover 5 is a hollow, irregularly shaped tube. The inner wall of the top of the dust cover 5 is tightly fitted with the outer wall of the ball pin rod of the ball pin 3. The bottom of the dust cover 5 is fixedly installed on the outer wall of the control arm body 1 by the retaining spring 6.

[0025] The top of the dust cover 5 is made of elastic material where it fits against the ball pin 3. The inner side is wrapped with a metal frame, and the outer side is designed with a spiral corrugated structure.

[0026] Installation steps and principles:

[0027] Step 1: Weigh out the spherical grease that meets the design requirements and inject it into the ball pin seat 2;

[0028] Step 2: Press the ball pin 3 into the ball pin seat 2 so that the ball pin seat 2 completely covers the ball head of the ball pin 3;

[0029] Step 3: Press the ball pin seat 2 with the ball pin 3 installed into the ball head hole of the control arm body 1;

[0030] Step 4: Press the plug seat 4 into the control arm body 1 so that the inner wall of the plug seat 4 fits with the upper end of the ball pin seat 2, so that the compression gap at the upper end of the ball pin seat 2 is reduced to the contact of adjacent petals, thereby allowing the ball pin seat 2 to better wrap the ball head of the ball pin 3.

[0031] Step 5: The ball pin assembly is fixed to the control arm body using a riveting process. At the same time, grease is injected into the riveting joint to improve airtightness and ensure the swing angle and rigidity of the ball pin 3, thereby improving the performance of the ball pin 3.

[0032] Step 6: Pass the dust cover 5 through the ball pin rod of the ball pin 3. The lower end of the dust cover 5 is fixed to the control arm body by a retaining spring 6. The dust cover 5 can prevent dust from entering and affecting the swing of the ball pin and protect the ball pin assembly from falling off.

[0033] Step 7: Simultaneously conduct online airtightness testing to ensure sealing performance.

[0034] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A ball joint assembly for a vehicle chassis suspension control arm, comprising a control arm body (1), wherein a ball joint hole is provided at the end of the control arm body (1), characterized in that: A ball pin assembly is installed inside the ball head hole. The ball pin assembly includes a ball pin seat (2) and a ball pin (3). The ball pin (3) includes a ball head and a ball pin rod. The ball head is embedded in the ball pin seat (2). Spherical grease is injected into the gap between the ball pin seat (2) and the ball pin (3). The ball pin seat (2) is embedded in the ball head hole of the control arm body (1).

2. The automobile chassis suspension control arm ball pin assembly according to claim 1, characterized in that: The ball pin seat (2) is a sphere with a flattened top and a hollow interior. The ball pin assembly also includes a plug seat (4). The plug seat (4) is tubular and the inner wall of the bottom end of the plug seat (4) is arc-shaped. The ball pin rod passes through the plug seat (4). The inner wall of the bottom end of the plug seat (4) is in contact with the outer wall of the upper end of the ball pin seat (2). The plug seat (4) is embedded in the ball head hole of the control arm body (1).

3. The automobile chassis suspension control arm ball pin assembly according to claim 2, characterized in that: The upper end of the ball pin seat (2) is designed with multiple sets of through extrusion seams and oil storage pits.

4. The automobile chassis suspension control arm ball pin assembly according to claim 1, characterized in that: The control arm body (1) is made of aluminum alloy.

5. The automobile chassis suspension control arm ball pin assembly according to claim 1, characterized in that: Grease was injected into the gap between the pin seat (2) and the ball head hole.

6. The automobile chassis suspension control arm ball pin assembly according to claim 1, characterized in that: It also includes a dust cover (5), which is a hollow, irregular tubular shape. The inner wall of the top of the dust cover (5) is tightly fitted with the outer wall of the ball pin rod of the ball pin (3). The bottom of the dust cover (5) is fixedly installed on the outer wall of the control arm body (1) by a snap ring (6).

7. The automobile chassis suspension control arm ball pin assembly according to claim 6, characterized in that: The top of the dust cover (5) is made of elastic material where it contacts the ball pin rod of the ball pin (3).

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