Control arm ball bush for vehicle

Abstract

The utility model relates to a vehicle control arm ball head bushing, which comprises a metal inner tube, a rubber layer, a metal ball head and a metal shell, the metal ball head is sleeved on the periphery of the metal inner tube, the outer side surface of the metal ball head is a spherical surface, the rubber layer is filled between the outer side surface of the metal inner tube and the inner side surface of the metal ball head, the metal shell is sleeved on the periphery of the metal ball head, and the rubber layer is filled between the rubber layer and the inner side surface of the metal ball head. At least one part of the inner side face of the metal shell is a spherical face matched with the outer side face of the metal ball head, the metal ball head is in clearance fit with the metal shell, and oil is added into a gap between the outer side face of the metal ball head and the inner side face of the metal shell. A plurality of oil grooves for storing oil are formed in the outer side face of the metal ball head. The automotive control arm ball head bushing further comprises two dust covers, and the two dust covers are respectively connected with the shell and respectively cover two end faces of the metal inner pipe, the metal ball head and the metal shell. Through structural improvement and material improvement, the performance is improved, and therefore the maneuvering performance and comfort of a vehicle are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a vehicle control arm ball head bushing. Background Art

[0002] Cars have gradually become a necessity in people's lives. In addition to meeting daily travel needs, comfort and handling have attracted much attention. In addition to meeting daily driving needs, original performance cars will seek an optimal matching range of handling and comfort in the adjustment of chassis suspension. Changing the suspension connecting parts, that is, the connecting bushings, can improve the vehicle's handling performance. The application of suspension connecting parts plays a key role in the vehicle's handling.

[0003] The ball joint currently used to connect the control arm to the wheel horn is a common control arm ball joint structure. When the wheel is stimulated by external factors, the ball joint part connected to the horn will swing in an undirected manner in the ball bowl connected to the control arm. In the original ball joint bushing, the ball seat and the ball bowl are made of plastic, and the structure is slightly insufficient. Under forced pulling, it is easy to be damaged, which can easily cause improper wear of the vehicle tire. In order to meet special needs, a control arm ball joint bushing with improved structure and good performance is designed for super sports cars with excellent sports performance, which can greatly improve the above problems. Summary of the invention

[0004] The utility model aims to provide a vehicle control arm ball head bushing with improved structure and performance, thereby improving the vehicle handling performance and comfort.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A vehicle control arm ball head bushing comprises a metal inner tube, a rubber layer, a metal ball head and a metal outer shell, wherein the metal ball head is sleeved on the outer periphery of the metal inner tube, the outer side surface of the metal ball head is a spherical surface, the rubber layer is filled between the outer side surface of the metal inner tube and the inner side surface of the metal ball head, the metal outer shell is sleeved on the outer periphery of the metal ball head, at least a portion of the inner side surface of the metal outer shell is a spherical surface matched with the outer side surface of the metal ball head, the metal ball head and the metal outer shell are clearance matched, and oil is added in the clearance between the outer side surface of the metal ball head and the inner side surface of the metal outer shell.

[0007] A plurality of oil grooves for storing the oil are arranged on the outer side surface of the metal ball head.

[0008] The depth and width of the oil groove vary with the thickness of the metal ball head where the oil groove is located.

[0009] The inner side surface of the metal ball head is a cylindrical surface, and the axial length of the rubber layer is smaller than the axial length of the metal ball head and the axial length of the metal inner tube.

[0010] The vehicle control arm ball head bushing also includes two dust covers, which are respectively connected to the outer shell and respectively cover the metal inner tube, the metal ball head and two end surfaces of the metal outer shell.

[0011] The dust cover comprises a plane part and a connecting part, wherein the plane part covers the metal inner tube, the metal ball head and the end surface of the metal shell in parallel, and the connecting part is vertically connected to the edge of the plane part and connected to the metal shell.

[0012] An annular groove is provided on the outer surface of the metal shell, and the edge of the connecting part is embedded in the annular groove.

[0013] The edge of the connecting portion forms a locking ring matching the inner wall of the annular groove, and the locking ring is embedded in the annular groove.

[0014] The dust cover is provided with a through hole which is intersecting with the tube hole of the metal inner tube, and the edge of the through hole is provided with an extension tube which extends along the axial direction of the through hole.

[0015] An extension surface which is parallel to the end surface of the extension tube and is located outside the through hole is disposed at the edge of the extension tube.

[0016] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art: the utility model improves the performance through structural improvement and material improvement, thereby improving the handling performance and comfort of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 The utility model is a structural cross-sectional view of a vehicle control arm ball head bushing.

[0018] In the above figures: 1. metal inner tube; 2. metal ball head; 3. metal outer shell; 4. rubber layer; 5. dust cover. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the embodiments shown in the accompanying drawings.

[0020] Embodiment 1: As shown in the attached Figure 1 As shown, a vehicle control arm ball bushing includes a metal inner tube 1, a rubber layer 4, a metal ball 2 and a metal outer shell 3, and may also include two dust covers 5. The vehicle control arm ball bushing is connected to the vehicle frame by bolt connection.

[0021] The metal inner tube 1 is made of high-strength aluminum alloy, and the metal ball head 2 and the metal outer shell 3 are made of stainless steel. The metal ball head 2 is a hollow structure, which has an inner side and an outer side. The outer side of the metal ball head 2 is a spherical surface, and the inner side is a cylindrical surface. The inner side of the metal ball head 2 is coated with glue for vulcanized rubber, and the outer side is not coated with glue. The metal ball head 2 is sleeved on the outer periphery of the metal inner tube 1, and the hollow cylindrical part thereof is coaxially arranged with the metal inner tube 1. The rubber layer 4 formed by high-temperature vulcanization is filled between the outer side of the metal inner tube 1 and the inner side of the metal ball head 2, and the axial length of the rubber layer 4 is less than the axial length of the metal ball head 2 and the axial length of the metal inner tube 1. Thus, a section of vacant space is formed at both ends of the metal ball head 2 and the metal inner tube 1. The metal shell 3 is sleeved on the outer periphery of the metal ball head 2. It is also a hollow structure and has an inner side and an outer side. The outer side of the metal shell 3 is roughly cylindrical, and at least a part of the inner side of the metal shell 3 is a spherical surface that matches the outer side of the metal ball head 2, so that the metal ball head 2 and the metal shell 3 are gap-matched, so that the metal ball head 2 can rotate in the metal shell 3. Oil is added to the gap between the outer side of the metal ball head 2 and the inner side of the metal shell 3. Several oil grooves for storing oil are opened on the outer side of the metal ball head 2, and the depth and width of the oil grooves vary with the thickness of the metal ball head 2 where they are located. In this embodiment, three oil grooves are opened on the outer side of the metal ball head 2 in parallel around its axis. Near the central cross-section of the metal ball head 2, that is, where the thickness of the metal ball head 2 is the largest, an oil groove with a larger depth and width is opened, and on both sides of the larger oil groove, that is, where the thickness of the metal ball head 2 is relatively small, two oil grooves with smaller depth and width are symmetrically opened.

[0022] Two dust covers 5 are respectively arranged at the axial ends of the whole formed by the metal inner tube 1, the rubber layer 4, the metal ball head 2 and the metal outer shell 3. The two dust covers 5 are respectively connected to the outer shell and cover the two end faces of the metal inner tube 1, the metal ball head 2 and the metal outer shell 3. Specifically, the dust cover 5 includes a plane part and a connecting part. The plane part covers the end faces of the metal inner tube 1, the metal ball head 2 and the metal outer shell 3 in parallel, and the connecting part is vertically connected to the edge of the plane part and connected to the metal outer shell 3. An annular groove is provided on the outer surface of the metal outer shell 3, and the edge of the connecting part is embedded in the annular groove. In this embodiment, the edge of the connecting part forms a locking ring matching the inner wall of the annular groove, and the locking ring is embedded in the annular groove, thereby realizing the connection of the dust cover 5. A through hole that intersects with the tube hole of the metal inner tube 1 is provided on the dust cover 5, and an extension tube extending along the axial direction of the through hole is provided on the edge of the through hole, and an extension surface parallel to the end face of the extension tube and located outside the through hole is provided on the edge of the extension tube.

[0023] After assembling the metal inner tube 1, the metal ball head 2, the metal outer shell 3 and the rubber layer 4, the dust cover 5 is locked in the annular groove of the metal outer shell 3 and on the bolts at both ends using locking rings, and the bolts pass through the bushings to connect with the control arm.

[0024] The above-mentioned vehicle control arm ball bushing is arranged at the connection between the control arm and the wheel. When the vehicle is driving and swinging in an undirected manner, the ball bushing can swing in a better angle range to improve the handling performance. In addition, due to the rubber structure between the metal ball head 2 and the metal inner tube 1, the connection between the control arm and the wheel is buffered, thereby further improving the comfort.

[0025] From the perspective of chassis tuning, in addition to improving comfort, the most important thing is to upgrade the bushing. The control arm ball bushing is particularly important for vehicles that require good handling to further improve the contact between the control arm, wheel and the ground.

[0026] In the above scheme:

[0027] (1) The metal ball head 2 and the metal shell 3 are both made of stainless steel, which has the advantages of corrosion resistance and high strength, and the wear resistance and strength of the bushing are easy to ensure; the metal material has small deformation and can control the swing amplitude, the swing range of the ball head is wider, and the tire can better contact the ground;

[0028] (2) A rubber layer 4 is provided between the metal ball head 2 and the metal inner tube 1, which improves the conventional ball head without a rubber structure and improves comfort.

[0029] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A vehicle control arm ball head bushing, characterized in that: The vehicle control arm ball head bushing includes a metal inner tube, a rubber layer, a metal ball head and a metal outer shell. The metal ball head is sleeved on the outer periphery of the metal inner tube, the outer side surface of the metal ball head is a spherical surface, the rubber layer is filled between the outer side surface of the metal inner tube and the inner side surface of the metal ball head, the metal outer shell is sleeved on the outer periphery of the metal ball head, at least a part of the inner side surface of the metal outer shell is a spherical surface matched with the outer side surface of the metal ball head, the metal ball head and the metal outer shell are gap-matched, and oil is added in the gap between the outer side surface of the metal ball head and the inner side surface of the metal outer shell.

2. The vehicle control arm ball head bushing according to claim 1, characterized in that: A plurality of oil grooves for storing the oil are arranged on the outer side surface of the metal ball head.

3. The vehicle control arm ball head bushing according to claim 2, characterized in that: The depth and width of the oil groove vary with the thickness of the metal ball head where the oil groove is located.

4. The vehicle control arm ball head bushing according to claim 1, characterized in that: The inner side surface of the metal ball head is a cylindrical surface, and the axial length of the rubber layer is smaller than the axial length of the metal ball head and the axial length of the metal inner tube.

5. The vehicle control arm ball head bushing according to claim 1, characterized in that: The vehicle control arm ball head bushing also includes two dust covers, which are respectively connected to the outer shell and respectively cover the metal inner tube, the metal ball head and two end surfaces of the metal outer shell.

6. The vehicle control arm ball head bushing according to claim 5, characterized in that: The dust cover comprises a plane part and a connecting part, wherein the plane part covers the metal inner tube, the metal ball head and the end surface of the metal shell in parallel, and the connecting part is vertically connected to the edge of the plane part and connected to the metal shell.

7. The vehicle control arm ball head bushing according to claim 6, characterized in that: An annular groove is provided on the outer surface of the metal shell, and the edge of the connecting part is embedded in the annular groove.

8. The vehicle control arm ball head bushing according to claim 7, characterized in that: The edge of the connecting portion forms a locking ring matching the inner wall of the annular groove, and the locking ring is embedded in the annular groove.

9. The vehicle control arm ball head bushing according to claim 5, characterized in that: The dust cover is provided with a through hole which is intersecting with the tube hole of the metal inner tube, and the edge of the through hole is provided with an extension tube which extends along the axial direction of the through hole.

10. The vehicle control arm ball head bushing according to claim 9, characterized in that: An extension surface is arranged on the edge of the extension tube, and the extension surface is parallel to the end surface of the extension tube and is located outside the through hole.

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