A swing arm connecting mechanism for an automotive chassis

Abstract

The utility model relates to the technical field of automobile parts, and disclose a kind of automobile chassis swing arm connecting mechanism, including swing arm body, bushing shell, rubber elastic piece, bushing inner core and positioning bolt, further include: the ear hole body being opened in the surface of swing arm body, the top of swing arm body and the periphery of ear hole body are all equipped with pin hole, the surface of bushing shell is welded with several pin rods;The utility model is by picking up bushing and entering the inside of ear hole body, let pin rod insert into pin hole, and rotate positioning bolt and drive positioning block to enter the inside of recess, without bushing is pressed into the inside of ear hole body, positioning bolt, pin rod and pin hole jointly bear the torsion received in swing arm use process, prevent the fracture condition that single use positioning bolt is fixed, and in the process of disassembly, rotate positioning bolt, make it be taken out from the inside of threaded hole and through hole in turn, disassembly mode is simple, avoid damage to swing arm itself.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to an automotive chassis swing arm connection mechanism. Background Technology

[0002] The control arm is a key component of the suspension system, connecting the wheels to the chassis frame. It allows the wheels to move up and down while maintaining the correct alignment angle, ensuring driving stability and handling. The bushings on the control arm are elastic elements installed at the connection points, typically made of rubber or hydraulic materials. Their function is to buffer impacts and vibrations between metal parts, reducing friction and noise. Simultaneously, through elastic deformation, they absorb road bumps, improving ride comfort and protecting suspension components, extending their service life.

[0003] The closed ear hole of the swing arm and the outer tube of the bushing are press-fitted. During assembly, the outer tube of the bushing is pressed into the ear hole by high pressure to form a tight connection. If the bushing is damaged and needs to be repaired or replaced, special tools such as pullers are required to pull the old bushing out of the closed ear hole. However, because the ear hole structure is closed and the fit is tight, improper force or angle during operation can easily cause the ear hole to deform or even damage the swing arm body, increasing the difficulty and cost of maintenance. Utility Model Content

[0004] The purpose of this utility model is to provide an automobile chassis swing arm connection mechanism to address the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a car chassis swing arm connecting mechanism, comprising a swing arm body, a bushing shell, a rubber elastic element, a bushing inner core, and a positioning bolt, and further comprising:

[0006] The swing arm body has an ear hole on its surface. The top of the swing arm body and the periphery of the ear hole body are provided with pin holes. Several pins are welded to the surface of the bushing shell. The side of the swing arm body has a through hole. The inner wall of the ear hole body is also provided with a threaded hole, which is connected to the ear hole body. The surface of the positioning bolt is also provided with a positioning block. The surface of the bushing shell is provided with a groove that cooperates with the positioning block.

[0007] Preferably, the number of pin holes is 6 and they are arranged in a circular array around the periphery of the ear hole body, and the number of pin rods is the same as the number of ear hole bodies and their positions correspond to each other.

[0008] Preferably, the length of the through hole is less than the length of the threaded hole.

[0009] Preferably, the pin is made of steel and has an L-shaped design.

[0010] Preferably, the positioning block is a circular block, and the inner wall of the groove is designed to be circular.

[0011] Preferably, the outer diameter of the positioning block is smaller than the inner diameter of the threaded hole.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention allows the bushing to be lifted and inserted into the ear canal body, the pin to be inserted into the pin hole, and the positioning bolt to be rotated to drive the positioning block into the groove. This eliminates the need to press the bushing into the ear canal body. At the same time, the positioning bolt, pin, and pin hole jointly bear the torque on the swing arm during use, preventing breakage that may occur when using the positioning bolt alone. During disassembly, the positioning bolt can be rotated to remove the swing arm from the threaded hole and through hole in sequence. The disassembly method is simple and avoids damage to the swing arm itself. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the bushing after it has been removed from inside the ear canal body in this utility model;

[0016] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;

[0017] Figure 4 This is a partial cross-sectional view of the swing arm body in this utility model;

[0018] Figure 5 This utility model Figure 4 A magnified structural diagram at point B in the middle.

[0019] In the diagram: 1. Swing arm body; 2. Ear hole body; 3. Bushing outer shell; 4. Rubber elastic element; 5. Bushing inner core; 6. Pin rod; 7. Pin hole; 8. Threaded hole; 9. Positioning bolt; 10. Positioning block; 11. Groove; 12. Through hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-5As shown, a car chassis swing arm connection mechanism includes a swing arm body 1, a bushing shell 3, a rubber elastic element 4, a bushing inner core 5, and a positioning bolt 9. The bushing shell 3 is usually a steel or aluminum metal sleeve. The rubber elastic element 4 is firmly bonded between the shell and the inner core through a vulcanization process. Its core function is to absorb small bumps and vibrations from the road surface, improve ride comfort, allow the swing arm to undergo flexible torsional deformation within a certain range to adapt to the up-and-down movement of the wheels, avoid direct hard contact between metal parts, and reduce impact noise. The bushing inner core 5 is usually a metal tube, which is where the bolts connecting the swing arm to the body or subframe pass through, and is responsible for transmitting force.

[0022] The surface of the swing arm body 1 is provided with an ear hole body 2. The top of the swing arm body 1 and the periphery of the ear hole body 2 are provided with pin holes 7. The surface of the bushing shell 3 is welded with several pins 6, which are made of steel and are L-shaped. There are 6 pin holes 7 arranged in a circular array around the ear hole body 2. The number of pins 6 is the same as the number of ear hole bodies 2 and their positions correspond to each other. The side of the swing arm body 1 is provided with a through hole 12. The inner wall of the ear hole body 2 is also provided with a threaded hole 8, which is connected to the ear hole body 2. The surface of the positioning bolt 9 is also welded with a positioning block 10. The surface of the bushing shell 3 is provided with a groove 11 that cooperates with the positioning block 10. The positioning block 10 is a circular block, and the inner wall of the groove 11 is circular. This allows the positioning bolt 9 to rotate after the positioning block 10 enters the groove 11.

[0023] During use, by lifting the bushing housing 3, the pin 6 is aligned with the pin hole 7. Then, the bushing housing 3 enters the interior of the ear hole body 2, and the pin 6 enters the interior of the pin hole 7. After that, the positioning bolt 9 is lifted and inserted into the through hole 12. Then, the positioning bolt 9 is rotated. Under the action of the thread on the inner wall of the threaded hole 8, the positioning bolt 9 gradually goes deeper. The outer diameter of the positioning block 10 is smaller than the inner diameter of the threaded hole 8, allowing the positioning block 10 to pass through the threaded hole 8. The length of the through hole 12 is smaller than the length of the threaded hole 8. Finally, the positioning bolt 9 drives the positioning block 10 to insert into the interior of the groove 11, fixing the bushing housing 3 and even the entire bushing. During use, the positioning bolt 9, the pin 6, and the pin hole 7 jointly bear the torque on the swing arm during use, preventing breakage due to the use of the positioning bolt 9 alone.

[0024] During disassembly, simply rotate the positioning bolt 9 to remove it from the threaded hole 8 and through hole 12 in sequence, allowing the positioning block 10 to disengage from the groove 11. Then, remove the bushing from the inside of the ear hole body 2. Since it is not an interference fit, the bushing is easy to remove, and the disassembly method is simple, avoiding damage to the swing arm itself.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A car chassis swing arm connection mechanism, comprising a swing arm body (1), a bushing housing (3), a rubber elastic element (4), a bushing inner core (5), and a positioning bolt (9), characterized in that, Also includes: The ear hole body (2) is opened on the surface of the swing arm body (1). The top of the swing arm body (1) and the periphery of the ear hole body (2) are provided with pin holes (7). Several pins (6) are welded to the surface of the bushing shell (3). The side of the swing arm body (1) is provided with through holes (12). The inner wall of the ear hole body (2) is also provided with threaded holes (8), and the threaded holes (8) are connected to the ear hole body (2). The surface of the positioning bolt (9) is also welded with positioning blocks (10). The surface of the bushing shell (3) is provided with grooves (11) that cooperate with the positioning blocks (10).

2. The automobile chassis swing arm connection mechanism according to claim 1, characterized in that: The number of pin holes (7) is 6 and they are arranged in a ring array around the ear hole body (2). The number of pin rods (6) is the same as the number of ear hole bodies (2) and their positions correspond to each other.

3. The automobile chassis swing arm connection mechanism according to claim 1, characterized in that: The length of the through hole (12) is less than the length of the threaded hole (8).

4. The automobile chassis swing arm connection mechanism according to claim 1, characterized in that: The pin (6) is made of steel and has an L-shaped design.

5. The automobile chassis swing arm connection mechanism according to claim 1, characterized in that: The positioning block (10) is a circular block, and the inner wall of the groove (11) is designed to be circular.

6. The automobile chassis swing arm connection mechanism according to claim 1, characterized in that: The outer diameter of the positioning block (10) is smaller than the inner diameter of the threaded hole (8).

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