Self-adaptive multi-directional rotating outer spherical bushing

Abstract

The utility model belongs to the technical field of bushings, and particularly relates to a self-adaptive multi-directional rotating outer spherical bushing. Comprising a bush outer pipe, a bush inner pipe and a connecting body, a connecting part is arranged on the side face of the bush outer pipe, the bush inner pipe is installed in the bush outer pipe, the bush inner pipe is sleeved with the connecting body, the outer surface of the connecting body is spherical, the connecting body is in sliding connection with the inner wall of the bush outer pipe, and an annular arc groove matched with the surface of the connecting body is formed in the inner wall of the bush outer pipe; through the structural design, self-adaptive multi-direction rotation can be achieved between the connecting body and the lining outer pipe, the torsional stress borne by the connecting body can be effectively reduced, the performance of the connecting body is prevented from being affected, and the service life of the lining is greatly prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of bushing technology, and in particular relates to an adaptive multi-directional rotation outer spherical bushing. Background Technology

[0002] Bushings are typically installed at both ends of automotive tie rods. They absorb and cushion vibrations and impacts generated during vehicle operation through their elastic deformation. Polyurethane has better hardness and rigidity than rubber, thus offering advantages in force transmission and providing drivers with a better handling experience. Therefore, polyurethane bushings are widely used in the bushings at both ends of automotive tie rods.

[0003] However, when traditional polyurethane bushings are applied to both ends of automotive tie rods, they are subjected to torsional stress over a long period of time, which accelerates wear and fatigue aging and has a significant impact on the service life of the polyurethane bushings. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned technical problems by providing an adaptive multi-directional rotating outer spherical bushing, thereby extending the service life of the polyurethane bushing.

[0005] In view of this, the present invention provides an adaptive multi-directional rotation outer spherical bushing, comprising:

[0006] The bushing outer tube has a connecting part installed on the side;

[0007] The inner tube of the bushing is installed inside the outer tube of the bushing.

[0008] The connector is fitted onto the inner tube of the bushing, and its outer surface is spherical, and it is slidably connected to the inner wall of the outer tube of the bushing.

[0009] Among them, an annular arc groove adapted to the surface of the connector is formed on the inner wall of the bushing outer tube.

[0010] In the above technical solution, further:

[0011] An oil groove is provided on the surface of the connector.

[0012] In the above technical solution, further:

[0013] The oil groove includes radial oil passages arranged around the connecting body and axial oil passages arranged at equal intervals around the surface of the connecting body;

[0014] The axial oil passage is connected to the radial oil passage.

[0015] In the above technical solution, further:

[0016] The maximum axial deflection angle of the connector is 17-18°, and the oil groove on the connector is always set to correspond to the annular arc groove.

[0017] In the above technical solution, further:

[0018] An oil injection hole is provided on the surface of the outer tube of the bushing, and a plug is installed in the oil injection hole;

[0019] The oil injection hole is connected to the oil tank.

[0020] Furthermore, the above technical solution also includes:

[0021] Limiting rings are fitted onto both ends of the inner tube of the bushing.

[0022] The limiting ring also has a first annular protrusion for axial positioning of the limiting ring.

[0023] In the above technical solution, further:

[0024] The connector has a second annular protrusion at both ends along the axial direction of the inner tube of the bushing, and the second annular protrusion abuts against the limiting ring.

[0025] In the above technical solution, further:

[0026] The connector body has capillary pores, and the capillary pores are connected to the oil tank.

[0027] In the above technical solution, further:

[0028] An annular groove communicating with capillary pores is opened on the inner wall of the connector near the inner tube of the bushing, forming an oil storage cavity with the surface of the inner tube of the bushing.

[0029] The beneficial effects of this utility model are as follows:

[0030] 1. By using a spherical shape on the outer surface of the connector and forming an annular groove on the inner wall of the bushing outer tube that matches the surface of the connector, the connector and the bushing outer tube can rotate adaptively in multiple directions, thereby effectively reducing the torsional stress on the connector, avoiding any impact on the performance of the connector, and effectively extending its service life.

[0031] 2. By opening the oil groove, the lubrication performance between the connector and the outer tube of the bushing can be further improved, and the torsional stress on the connector can be further reduced, thereby avoiding accelerated wear and aging of the polyurethane bushing and extending its service life.

[0032] 3. By designing the oil groove as radial oil passages surrounding the connector and axial oil passages evenly spaced around the surface of the connector, the uniformity of lubricating oil between the connector and the outer bushing tube can be effectively improved, thereby ensuring lubrication performance and avoiding local wear and aging caused by insufficient local lubrication.

[0033] 4. By ensuring that the oil groove on the connector is always aligned with the annular groove, lubricating oil leakage can be prevented from occurring in the oil groove when the connector is subjected to torsional stress and undergoes axial deflection, thus effectively ensuring lubrication. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of this utility model;

[0035] Figure 2 This is a top view of the present invention;

[0036] Figure 3 This is a utility model Figure 2 Sectional view at point AA;

[0037] Figure 4 This is a utility model Figure 3 Enlarged view of point B in the middle;

[0038] Figure 5 This is an exploded view of the present invention;

[0039] Figure 6 This is a utility model Figure 5 Enlarged view of point C in the middle;

[0040] The markings in the diagram are as follows: 1. Outer bushing tube; 2. Inner bushing tube; 3. Connector; 4. Annular groove; 5. Oil groove; 50. Radial oil passage; 51. Axial oil passage; 6. Oil injection hole; 7. Plug; 8. Limiting ring; 9. First annular protrusion; 10. Second annular protrusion; 11. Connecting part; 12. Capillary hole; 13. Annular groove. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0042] Example 1:

[0043] This embodiment provides an adaptive multi-directional rotation outer spherical bushing, comprising:

[0044] The bushing outer tube 1 has a connecting part 11 installed on its side;

[0045] The inner bushing tube 2 is installed inside the outer bushing tube 1;

[0046] The connector 3 is sleeved on the inner tube 2 of the bushing, and its outer surface is spherical, and it is slidably connected to the inner wall of the outer tube 1 of the bushing.

[0047] Among them, an annular arc groove 4 adapted to the surface of the connector 3 is formed on the inner wall of the bushing outer tube 1;

[0048] Meanwhile, the connecting part 11 and the bushing outer tube 1 adopt an integrated structure.

[0049] As can be seen from this embodiment, by adopting a spherical shape on the outer surface of the connector 3 and forming an annular groove 4 on the inner wall of the bushing outer tube 1 that is adapted to the surface of the connector 3, the connector 3 and the bushing outer tube 1 can perform adaptive multi-directional rotation, thereby effectively reducing the torsional stress on the connector 3, thus avoiding the impact on the performance of the connector 3 and effectively extending its service life.

[0050] The connection part 11 facilitates the installation and connection of the bushing.

[0051] Example 2:

[0052] This embodiment provides an adaptive multi-directional rotation outer spherical bushing, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0053] An oil groove 5 is formed on the surface of the connector 3.

[0054] As can be seen from this embodiment, by opening the oil groove 5, the lubrication performance between the connector 3 and the bushing outer tube 1 can be further improved, and the torsional stress on the connector 3 can be further reduced, thereby avoiding accelerated wear and aging of the polyurethane bushing and extending its service life.

[0055] Example 3:

[0056] This embodiment provides an adaptive multi-directional rotation outer spherical bushing, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0057] The oil groove 5 includes radial oil passages 50 arranged around the connecting body 3 and axial oil passages 51 arranged at equal intervals around the surface of the connecting body 3.

[0058] Among them, the axial oil passage 51 is connected to the radial oil passage 50.

[0059] As can be seen from this embodiment, by designing the oil groove 5 as a radial oil passage 50 surrounding the connector 3 and an axial oil passage 51 circumferentially spaced on the surface of the connector 3, the uniformity of lubrication between the outer surface of the connector 3 and the inner wall of the bushing outer tube 1 can be effectively improved, thereby ensuring lubrication performance and avoiding local wear aggravation and aging caused by insufficient local lubrication. The connection between the axial oil passage 51 and the radial oil passage 50 can ensure that the lubricating oil in the two oil passages can be interconnected, further ensuring the uniformity of lubrication between the outer surface of the connector 3 and the inner wall of the bushing outer tube 1.

[0060] Example 4:

[0061] This embodiment provides an adaptive multi-directional rotation outer spherical bushing, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0062] The maximum axial deflection angle of the connector 3 is 17-18°, and the oil groove 5 on the connector 3 is always set to correspond with the annular arc groove 4.

[0063] As can be seen from this embodiment, by always setting the oil groove 5 on the connector 3 to correspond with the annular arc groove 4, the lubricating oil in the oil groove 5 can be prevented from leaking when the connector 3 is subjected to torsional stress and undergoes axial deflection, thus effectively ensuring lubrication. Furthermore, setting the maximum axial deflection of the connection to 17-18° can prevent the deflection angle from being too large, which would reduce the stability of the bushing, or the deflection angle from being too small, which would fail to achieve the effect of reducing torsional stress.

[0064] Example 5:

[0065] This embodiment provides an adaptive multi-directional rotation outer spherical bushing, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0066] An oil injection hole 6 is provided on the surface of the outer tube 1 of the bushing, and a plug 7 is installed in the oil injection hole 6;

[0067] The oil injection hole 6 is connected to the oil groove 5.

[0068] As can be seen from this embodiment, the opening of the oil injection hole 6 can improve the convenience of injecting or replenishing lubricating oil in the oil tank 5, while the plug 7 can improve the sealing of the oil injection hole 6 and prevent lubricating oil from leaking from the oil injection hole 6.

[0069] Example 6:

[0070] This embodiment provides an adaptive multi-directional rotation outer spherical bushing, which, in addition to the technical solutions of the above embodiments, also has the following technical features and includes:

[0071] Limiting rings 8 are fitted onto both ends of the inner tube 2 of the bushing;

[0072] The limiting ring 8 is also provided with an annular protrusion for axial positioning of the limiting ring 8, and the limiting ring and the inner tube of the bushing 2 can be interference fit.

[0073] As can be seen from this embodiment, the setting of the limiting ring 8 facilitates the installation of the connector 3 on the surface of the inner tube 2 of the bushing, ensures its installation accuracy, and avoids unnecessary stress that could damage the bushing, thus ensuring the shock absorption effect and service life of the bushing.

[0074] Meanwhile, the limiting ring 8 is provided with an annular protrusion for axial positioning of the limiting ring 8, which can further improve the installation accuracy of the limiting ring 8 and improve the ease of installation.

[0075] Example 7:

[0076] This embodiment provides an adaptive multi-directional rotation outer spherical bushing, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0077] The connecting body 3 is provided with a second annular protrusion 10 at both ends along the axial direction of the inner tube 2 of the bushing, and the second annular protrusion 10 abuts against the limiting ring 8.

[0078] The second annular protrusion 10 and the connecting body 3 are integrated into one structure.

[0079] As can be seen from this embodiment, by setting the second annular protrusion 10, the contact area between the connector 3 and the limiting ring 8 is increased, which further improves the structural stability. Moreover, the larger contact area can better promote the limiting ring 8 to act on the connector 3, thereby pushing the connector 3 to deflect.

[0080] Example 8:

[0081] This embodiment provides an adaptive multi-directional rotation outer spherical bushing, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0082] The connector 3 has a capillary hole 12 inside, and the capillary hole 12 is connected to the oil tank 5;

[0083] Multiple capillary pores 12 are provided, with one end of each pore penetrating the connector 3 and the other end extending into the oil tank 5.

[0084] As can be seen from this embodiment, the opening of the capillary pores 12 can achieve the effect of oil storage, allowing more lubricating oil to be injected into the interior, thereby effectively extending the effective lubrication time. Furthermore, oil supply through the capillary pores 12 can achieve a small flow rate, thereby limiting the oil supply rate of lubricating oil to the oil tank 5, and thus extending the lubrication time.

[0085] Example 9:

[0086] This embodiment provides an adaptive multi-directional rotation outer spherical bushing, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0087] An annular groove 13 communicating with the capillary pore 12 is provided on the inner wall of the connector 3 near the inner tube 2 of the bushing, and an oil storage cavity is formed with the surface of the inner tube 2 of the bushing.

[0088] As can be seen from this embodiment, by opening an annular groove 13 on the inner wall of the connector 3, the maximum amount of lubricating oil that can be injected into the connector 3 can be increased, thereby increasing the storage capacity, effectively extending the lubrication time, and forming an oil storage cavity with the surface of the bushing inner tube 2. When the connector 3 is compressed, the oil storage cavity can be compressed, which makes it easier to squeeze the lubricating oil through the capillary pores 12, thus ensuring the stability of the oil supply.

[0089] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An adaptive multi-directional rotation outer spherical bushing, characterized in that, include: Bushing outer tube (1); The inner tube (2) of the bushing is installed inside the outer tube (1) of the bushing; The connector (3) is fitted on the inner tube (2) of the bushing, and its outer surface is spherical and is slidably connected to the inner wall of the outer tube (1) of the bushing. Among them, an annular arc groove (4) adapted to the surface of the connector (3) is formed on the inner wall of the bushing outer tube (1).

2. The adaptive multi-directional rotation outer spherical bushing according to claim 1, characterized in that: The surface of the connector (3) is provided with an oil groove (5).

3. The adaptive multi-directional rotation outer spherical bushing according to claim 2, characterized in that: The oil groove (5) includes a radial oil passage (50) arranged around the connector (3) and an axial oil passage (51) arranged at equal intervals around the surface of the connector (3); The axial oil passage (51) is connected to the radial oil passage (50).

4. The adaptive multi-directional rotation outer spherical bushing according to claim 2, characterized in that: The maximum axial deflection angle of the connector (3) is 17-18°, and the oil groove (5) on the connector (3) is always set in correspondence with the annular arc groove (4).

5. The adaptive multi-directional rotation outer spherical bushing according to claim 2, characterized in that: The outer tube (1) of the bushing has an oil injection hole (6) on its surface, and a plug (7) is installed in the oil injection hole (6); The oil injection hole (6) is connected to the oil trough (5).

6. The adaptive multi-directional rotation outer spherical bushing according to claim 1, characterized in that, Also includes: The limiting ring (8) is sleeved on both ends of the inner tube (2) of the bushing; The limiting ring (8) is further provided with a first annular protrusion (9) for axial positioning of the limiting ring (8).

7. The adaptive multi-directional rotation outer spherical bushing according to claim 6, characterized in that: The connector (3) is provided with a second annular protrusion (10) at both ends along the axial direction of the inner tube (2) of the bushing, and the second annular protrusion (10) abuts against the limiting ring.

8. The adaptive multi-directional rotation outer spherical bushing according to claim 2, characterized in that: The connector (3) has a capillary hole (12) inside, and the capillary hole (12) is connected to the oil tank (5).

9. The adaptive multi-directional rotation outer spherical bushing according to claim 2, characterized in that: The connector (3) has an annular groove (13) on the inner wall near the inner tube (2) of the bushing, which communicates with the capillary pore (12) and forms an oil storage cavity with the surface of the inner tube (2).

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