Automobile suspension

Abstract

The automobile suspension comprises a swing arm, a ball pin is installed on the swing arm, a dust cover covers the ball pin, an upper end opening of the dust cover integrally extends to form a conical ring matched with a pin rod of the ball pin, a pressing ring used for pressing the conical ring is arranged outside the conical ring, and the upper end face of the pressing ring is higher than the upper end face of the conical ring. According to the utility model, the conical ring is matched with the pressing ring, so that the dust cover can be ensured to be tightly attached to the side wall of the pin rod, impurities are prevented from entering the dust cover to cause ball head abrasion, and the normal work of a suspension system is further ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of suspension structures, in particular to an automobile suspension. Background Art

[0002] The automobile suspension system is an important component that connects the wheels to the vehicle body, which directly affects the vehicle's ride smoothness, handling stability and safety. The suspension system includes a swing arm, which is a guide and force transmission element on the automobile suspension system. The swing arm is connected to the steering knuckle through a ball stud, which transmits the force and torque acting on the wheel to the vehicle body, while ensuring that the wheel moves along a predetermined trajectory. During the driving process of the car, the ball stud between the swing arm and the steering knuckle is constantly under stress and moves. Therefore, in the suspension system, the ball stud is one of the components that is more susceptible to wear.

[0003] The existing ball studs are usually equipped with dust covers on the outside to prevent dust, dirt, moisture and other foreign matter from entering the ball studs, thus preventing the ball studs from being worn and affecting the normal operation of the suspension system. The ball studs include a ball head and a pin rod. The ball head is accommodated in a ball stud seat on the swing arm. The pin rod extends out of the ball stud seat and is connected to the steering knuckle. The dust cover passes through the pin rod and is arranged on the upper end of the ball stud seat.

[0004] However, since the pin is a tapered rod, there is a gap between the upper end of the existing dust cover and the side wall of the pin. During the driving of the car, muddy water may enter the dust cover through the gap and reach the ball head, causing wear of the ball head. In addition, since the upper end surface of the dust cover will contact the steering knuckle, after a period of use, the upper end surface of the dust cover will rub against the steering knuckle, causing wear on the upper end surface of the dust cover, thereby increasing the area of ​​the gap, further reducing the sealing effect, and aggravating the wear of the ball head. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model aims to provide an automobile suspension to reduce the wear of the ball stud, thereby ensuring the normal operation of the suspension system.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A car suspension comprises a swing arm, a ball pin is mounted on the swing arm, a dust cover is arranged on the outer cover of the ball pin, a conical ring which matches the pin rod of the ball pin is integrally extended from the upper port of the dust cover, a pressing ring for pressing the conical ring is arranged outside the conical ring, and the upper end surface of the pressing ring is higher than the upper end surface of the conical ring.

[0008] Compared with the prior art, the principles and beneficial effects of the utility model are as follows:

[0009] 1. The conical ring provided in this scheme can be close to the side wall of the pin rod, and the pressure ring can further press the conical ring, so that the conical ring and the pin rod can fit more firmly. With the cooperation of the conical ring and the pressure ring, the dust cover can fit closely to the side wall of the pin rod, which can prevent impurities from entering the dust cover and causing wear of the ball head.

[0010] 2. In this solution, the pressure ring can protect the tapered ring. Since the upper end surface of the pressure ring is higher than the upper end surface of the tapered ring, when the swing arm and the steering knuckle are assembled, the structure in contact with the steering knuckle is the pressure ring. This setting can prevent the upper end surface of the tapered ring from rubbing against the steering knuckle, causing wear on the tapered ring and affecting the fit between the tapered ring and the pin rod.

[0011] 3. The steering knuckle rests against the upper end surface of the pressure ring. During the driving process of the car, the steering knuckle will apply a downward force to the pressure ring, so that the pressure ring further presses the tapered ring, thereby making the tapered ring and the pin rod fit more closely and have better sealing.

[0012] As a preferred embodiment of the utility model, a limiting ring is provided on the outer side of the pin rod of the ball pin, and the upper end of the dust cover can be abutted against the upper end surface of the limiting ring. The limiting ring in this solution can play an axial limiting role on the upper end of the dust cover, and can prevent the upper ends of the conical ring and the dust cover from moving downward synchronously with the pressing ring when the pressing ring is inserted into the conical ring, resulting in compression failure.

[0013] As a preferred embodiment of the utility model, a tapered hole is opened in the middle of the pressure ring, and the diameter of the tapered hole gradually increases from top to bottom, and the maximum diameter of the tapered hole is larger than the outer diameter of the upper end of the tapered ring. The diameter of the tapered hole at the bottom end in this scheme is the maximum diameter. By setting the diameter of the bottom end to be larger than the outer diameter of the upper end of the tapered ring, it is easier to put the pressure ring into the tapered ring from top to bottom.

[0014] As a preferred embodiment of the utility model, the inner diameter of the tapered ring gradually decreases from bottom to top. This solution sets the inner diameter of the tapered ring to be smaller at the top and larger at the bottom, which can be matched with a tapered pin rod to better fit the outer wall of the ball pin pin rod and reduce the gap between the pin rod and the tapered ring.

[0015] As a preferred embodiment of the utility model, the pressure ring is made of metal. In this solution, the pressure ring is made of metal. The high hardness of the pressure ring can better press the tapered hole. At the same time, the pressure ring will contact with the steering knuckle, causing friction. The metal material is more wear-resistant and easy to reuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0017] Figure 2 yes Figure 1Magnified view of area A in the middle.

[0018] Reference numerals include:

[0019] Swing arm 1, ball pin seat 2, dust cover 3, ball pin 4, pressure ring 5, limit ring 6, port 7, tapered hole 8. DETAILED DESCRIPTION

[0020] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially for illustrative purposes rather than for limiting the present invention.

[0021] In the description of the present application, the terms "top", "bottom", "one end", "one side", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the structure referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present application.

[0022] See also Figure 1 and Figure 2 As shown, this embodiment discloses an automobile suspension, including a swing arm 1, a ball pin seat 2 is fixed on the swing arm 1, a ball pin 4 is installed in the ball pin seat 2, and a dust cover 3 is provided on the outer cover of the ball pin 4. The dust cover 3 is spherical and made of rubber. The upper and lower ends of the dust cover 3 are open, and the upper port 7 thereof is integrally extended upward with a conical ring, and the inner diameter of the conical ring gradually decreases from bottom to top. When installing the dust cover 3, the dust cover 3 passes through the pin rod, and the conical ring fits with the outer wall of the pin rod of the ball pin 4. The dust cover 3 is set on the ball pin seat 2, and the lower end of the dust cover 3 is fixed to the ball pin seat 2. By setting the conical ring, the conical ring can better fit with the outer wall of the pin rod of the ball pin 4, thereby reducing the gap between the pin rod and the conical ring, and preventing impurities from entering the dust cover 3 to cause the ball head to wear, thereby affecting the normal operation of the suspension system.

[0023] The conical ring is covered with a pressing ring 5, which is made of metal and has a conical hole 8 in the middle. The pressing ring 5 is covered on the outside of the conical ring to compress the conical ring. By setting the pressing ring 5, the pressing ring 5 can compress the conical ring, so that the conical ring and the pin are more firmly fitted.

[0024] The diameter of the tapered hole 8 increases gradually from top to bottom, and the diameter of the bottom end of the tapered hole 8 is larger than the outer diameter of the upper end of the tapered ring. By setting the diameter of the bottom end to be larger than the outer diameter of the upper end of the tapered ring, it is easier to insert the pressing ring 5 into the tapered ring from top to bottom, which is conducive to improving the insertion efficiency.

[0025] After the pressing ring 5 presses the conical ring, its upper end face is higher than the upper end face of the conical ring. Since the dust cover 3 is located between the steering knuckle and the swing arm 1, during the driving process of the automobile, the steering knuckle and the swing arm 1 will move relative to each other, and the upper end of the dust cover 3 will rub against the steering knuckle. In the long run, the upper end face of the dust cover 3 will wear, thereby affecting the sealing of the dust cover 3. Therefore, by setting the upper end face of the pressing ring 5 to be higher than the upper end face of the conical ring, the structure that rubs against the steering knuckle is the pressing ring 5. The pressing ring 5 is made of metal and is more wear-resistant. Moreover, when the pressing ring 5 is against the steering knuckle, the steering knuckle will generate a downward force on the pressing ring 5, which can make the pressing ring 5 further press the conical ring, so that the conical ring and the pin rod fit more closely and have better sealing. Therefore, the pressing ring 5 can not only protect the conical ring, but also help improve the sealing effect.

[0026] A limiting ring 6 is integrally formed on the outer side of the pin rod of the ball pin 4, and the upper port 7 of the dust cover 3 can abut against the upper end surface of the limiting ring 6. By providing the limiting ring 6, the limiting ring 6 can play an axial limiting role on the upper port 7 of the dust cover 3, so as to avoid the cone ring and the upper port 7 of the dust cover 3 moving downward synchronously with the pressing ring 5 when the pressing ring 5 is inserted into the cone ring, resulting in compression failure.

[0027] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An automobile suspension, comprising a swing arm, a ball stud is mounted on the swing arm, and a dust cover is provided on the outer cover of the ball stud, characterized in that: A conical ring matching the ball pin rod is integrally extended from the upper port of the dust cover, and a pressing ring for pressing the conical ring is arranged outside the conical ring, and the upper end surface of the pressing ring is higher than the upper end surface of the conical ring.

2. The vehicle suspension according to claim 1, characterized in that: A limiting ring is arranged on the outer side of the pin rod of the ball pin, and the upper end port of the dust cover can abut against the upper end surface of the limiting ring.

3. The automobile suspension according to claim 1, characterized in that: A tapered hole is opened in the middle of the pressure ring, the diameter of the tapered hole gradually increases from top to bottom, and the maximum diameter of the tapered hole is greater than the outer diameter of the upper end of the tapered ring.

4. The automobile suspension according to claim 1, characterized in that: The inner diameter of the conical ring gradually decreases from bottom to top.

5. The vehicle suspension according to claim 1, characterized in that: The pressure ring is made of metal.

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