Guide bushing for automobile steering device

Abstract

The utility model relates to a guide bushing for an automobile steering gear, and belongs to the technical field of automobile accessories, the guide bushing comprises a bushing body and an oil storage ring, one side of the bushing body is provided with a mounting ring groove, the oil storage ring is mounted in the mounting ring groove, and an oil cavity for storing lubricating oil is formed in the oil storage ring; fluid channels communicating with the oil cavity are formed in the inner wall of the bush body, and the multiple fluid channels are evenly formed in the circumferential direction of the bush body at intervals. The device has the effect of improving the convenience when lubricating oil is smeared into the guide bush.

Description

Technical Field

[0001] The present application relates to the technical field of automobile accessories, and in particular to a guide bushing for an automobile steering gear. Background Art

[0002] The automobile steering gear is the most important component in the automobile steering system. Its function is to increase the force transmitted from the steering wheel to the steering transmission mechanism and change the direction of force transmission. The automobile steering gear contains an I-beam and a corresponding steering knuckle structure. In the prior art, the staff will install the guide bushing in the steering knuckle, align the kingpin hole of the steering knuckle with the kingpin hole of the I-beam, and then assemble the kingpin into the kingpin hole, so that the steering knuckle can rotate around the kingpin to achieve the steering function, and at the same time insert the corresponding rotating beam shaft into the guide bushing.

[0003] In order to prevent abnormal noise from occurring between the rotating beam shaft and the guide bushing as the steering knuckle rotates around the kingpin, lubricating oil is applied to the inside of the guide bushing before installation in the related art. However, with long-term use, the lubricating oil inside the guide bushing will dry up, so lubricating oil needs to be applied to the inside of the guide bushing regularly during maintenance.

[0004] In the related art, after the lubricating oil inside the guide bushing dries up, in order to evenly spread the lubricating oil on the inner peripheral wall of the guide bushing, the staff will remove the guide bushing and then evenly apply the lubricating oil on the inner peripheral wall of the guide bushing. However, since the guide bushing is located inside the steering knuckle in the steering gear, the guide bushing needs to be removed before applying the lubricating oil to the inside of the guide bushing, which makes it inconvenient to apply the lubricating oil to the guide bushing. Utility Model Content

[0005] In order to improve the convenience of applying lubricating oil into a guide bushing, the present application provides a guide bushing for an automobile steering gear.

[0006] The present application provides a guide bushing for an automobile steering gear, which adopts the following technical solution:

[0007] A guide bushing for an automobile steering gear comprises a bushing body and an oil storage ring, wherein a mounting ring groove is provided on one side of the bushing body, the oil storage ring is installed in the mounting ring groove, an oil cavity for storing lubricating oil is provided inside the oil storage ring, a fluid channel connected to the oil cavity is provided on the inner wall of the bushing body, and a plurality of fluid channels are evenly spaced along the circumference of the bushing body.

[0008] Preferably, the fluid channel comprises an axial channel and a radial channel, the axial channel is opened at the groove bottom of the mounting ring groove, and the radial channel is opened on the inner wall of the bushing body and communicates with the axial channel.

[0009] Preferably, a plurality of radial channels are provided, and the plurality of radial channels are arranged at intervals along the extension direction of the same axial channel.

[0010] Preferably, an oil ring groove is provided on the inner wall of the bushing body, and the plurality of radial channels located in the same horizontal plane in the circumferential direction of the bushing body are all connected to the oil ring groove.

[0011] Preferably, an oil outlet nozzle inserted into the axial channel to inject lubricating oil into the axial channel is provided on one side of the oil storage ring close to the bottom of the mounting ring groove, and the number of the oil outlet nozzles is consistent with the number of the axial channels and corresponds one to one.

[0012] Preferably, the oil outlet nozzle is made of elastic material, and is provided with an oil outlet gap for allowing the oil to be squeezed out of the oil cavity after the oil storage ring is squeezed.

[0013] Preferably, an extrusion ring for extruding the oil storage ring is installed in the inner thread of the mounting ring groove, and the extrusion ring is located on a side of the oil storage ring away from the bottom of the mounting ring groove.

[0014] Preferably, a driving groove for inserting a hexagonal wrench to drive the extrusion ring to rotate is provided on the side of the extrusion ring facing away from the oil storage ring.

[0015] In summary, the present application includes at least one of the following beneficial technical effects:

[0016] 1. When applying lubricating oil to the inside of the bushing body, there is no need to disassemble the bushing body. Just twist the extrusion ring to allow the lubricating oil in the oil cavity to be injected into the axial channel and then enter the radial channel from the axial channel to adhere to the inner wall of the bushing body. Multiple axial channels and radial channels are opened and evenly distributed, so that the lubricating oil is evenly distributed at various positions inside the bushing body.

[0017] 2. The opening of the oil ring groove allows a certain gap to be left between the oil outlet of the radial channel and the shaft parts inserted into the bushing body, so that the lubricating oil can be discharged from the radial channel more smoothly;

[0018] 3. Since the oil outlet nozzle is made of elastic material, when the oil storage ring is not subjected to extrusion force, the oil outlet gap will be closed under the action of its own elastic material, making it difficult for the oil in the oil chamber to enter the axial channel. When the oil storage ring is squeezed, the lubricating oil produces an impact force on the oil outlet gap, causing the oil outlet gap to open and allow the oil to enter the axial channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an exploded schematic diagram of the guide bushing in the embodiment of the present application.

[0020] Figure 2 It is a three-dimensional cross-sectional view of the guide bushing in the embodiment of the present application.

[0021] Figure 3 It is a schematic diagram of the structure of the oil storage ring and the oil outlet nozzle in the embodiment of the present application.

[0022] Explanation of the reference numerals: 1. Bushing body; 11. Mounting ring groove; 12. Fluid channel; 121. Axial channel; 122. Radial channel; 13. Oil ring groove; 2. Oil storage ring; 21. Oil cavity; 22. Oil outlet nozzle; 221. Oil outlet gap; 3. Extrusion ring; 31. Drive groove. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-3 This application is described in further detail.

[0024] The present application embodiment discloses a guide bushing for an automobile steering gear. Figure 1 The guide bushing for automobile steering gear includes a bushing body 1, an oil storage ring 2 and an extrusion ring 3. A mounting ring groove 11 is provided on one side of the bushing body 1, and lubricating oil is contained inside the oil storage ring 2. The oil storage ring 2 is installed in the mounting ring groove 11, and a fluid channel 12 connected to the inside of the oil storage ring 2 is provided on the inner wall of the bushing body 1. A plurality of fluid channels 12 are provided circumferentially on the bushing body 1, so that the lubricating oil in the oil storage ring 2 can flow evenly on the inner wall of the bushing body 1. The extrusion ring 3 is threadedly installed in the mounting ring groove 11, and the lubricating oil inside the oil storage ring 2 can flow into the fluid channel 12 by twisting the extrusion ring 3 so that the extrusion ring 3 squeezes the oil storage ring 2. The above whole process does not require the bushing body 1 to be removed from the steering gear, and only requires rotating the extrusion ring 3, which makes it more convenient to apply lubricating oil to the inside of the bushing body 1 later.

[0025] The bushing body 1 is a circular cylinder with openings on both sides, and the mounting ring groove 11 is arranged concentrically with the bushing body 1. The multiple fluid channels 12 have the same structure, and one fluid channel 12 is taken as an example for explanation below.

[0026] Reference Figure 1 and Figure 2The fluid channel 12 includes an axial channel 121 and a radial channel 122. The axial channel 121 is opened at the bottom of the mounting ring groove 11, and the axial channel 121 extends along the axial direction of the bushing body 1 but does not penetrate the bushing body 1. The radial channel 122 is opened on the inner wall of the bushing body 1, and the radial channel 122 extends along the radial direction of the bushing body 1 and communicates with the axial channel 121. There are multiple radial channels 122, and the multiple radial channels 122 are arranged at intervals along the extension direction of the same axial channel 121, and the multiple radial channels 122 are all connected to the same axial channel 121, so that the lubricating oil can flow out from multiple positions in the axial direction of the bushing body 1, so that the inner wall of the bushing body 1 is evenly covered with the lubricating oil.

[0027] Reference Figure 1 and Figure 2 , an oil ring groove 13 is also provided on the inner wall of the bushing body 1, and the multiple radial channels 122 on the same horizontal plane on the multiple fluid channels 12 are all connected to the oil ring groove 13, that is, the multiple radial channels 122 arranged circumferentially on the same horizontal plane on the bushing body 1 are all opened at the bottom of the same oil ring groove 13. Since the same axial channel 121 is connected with multiple radial channels 122 along the axial direction of the bushing body 1, multiple oil ring grooves 13 are provided, and the number of oil ring grooves 13 is consistent with the number of multiple radial channels 122 on the same axial channel 121 and corresponds one to one. The oil outlet of the radial channel 122 forms a movable gap with the shaft parts inserted into the bushing body 1 through the oil ring groove 13, so that the lubricating oil can smoothly enter the oil ring groove 13 from the radial channel 122 and gather in the oil ring groove 13, and then flow and penetrate around.

[0028] Reference Figure 2 and Figure 3 The oil storage ring 2 is made of elastic rubber material, and the inside of the oil storage ring 2 has an oil cavity 21 for storing lubricating oil. An oil outlet nozzle 22 is provided on the side of the oil storage ring 2 close to the bottom of the mounting ring groove 11. The oil outlet nozzle 22 is a cylinder and is also made of elastic rubber material. The oil outlet nozzle 22 is welded to the oil storage ring 2, and the oil outlet nozzle 22 is inserted into the axial channel 121. A cross-shaped oil outlet gap 221 is provided at the end of the oil outlet nozzle 22 away from the oil storage ring 2. The oil outlet gap 221 is connected with the oil cavity 21. The lubricating oil in the oil cavity 21 will enter the axial channel 121 through the oil outlet gap 221, and then enter each radial channel 122 in the axial channel 121. Since the oil outlet nozzle 22 is made of elastic material, when the oil storage ring 2 is not subjected to extrusion force, the oil outlet gap 221 will be closed under the action of its own elastic material, so that the oil in the oil chamber 21 is not easy to enter the axial channel 121. When the oil storage ring 2 is squeezed, the lubricating oil generates an impact force on the oil outlet gap 221, causing the oil outlet gap 221 to open and allow the oil to enter the axial channel 121.

[0029] Since there are multiple axial channels 121 , there are also multiple oil outlet nozzles 22 . The multiple oil outlet nozzles 22 have the same structure, and the number of the oil outlet nozzles 22 is consistent with the number of the axial channels 121 and corresponds one to one.

[0030] Reference Figure 2 and Figure 3 The extrusion ring 3 is located on the side of the oil storage ring 2 away from the oil outlet nozzle 22, and the extrusion ring 3 is threadedly installed in the mounting ring groove 11. A driving groove 31 is provided on the side of the extrusion ring 3 away from the oil storage ring 2. The hexagonal wrench can be inserted into the driving groove 31 and then the hexagonal wrench is used as a rocker to drive the extrusion ring 3 to rotate and squeeze the oil storage ring 2, so that the lubricating oil in the oil chamber 21 flows out from the oil outlet gap 221 under the action of the extrusion force.

[0031] The implementation principle of a guide bushing for an automobile steering gear in an embodiment of the present application is as follows: when applying lubricating oil to the inside of the bushing body 1, there is no need to disassemble the bushing body 1, and only the hexagonal wrench needs to be inserted into the driving groove 31 and then the extrusion ring 3 needs to be driven to rotate and move in the direction close to the oil storage ring 2 to squeeze the oil storage ring 2 so that the oil storage ring 2 is deformed. After the oil storage ring 2 is deformed, the lubricating oil in the oil chamber 21 will rush out the oil outlet gap 221 and enter the axial channel 121, and the lubricating oil in the axial channel 121 will enter into multiple radial channels 122, and then the lubricating oil in multiple radial channels 122 arranged circumferentially on the same horizontal plane will enter the same oil ring groove 13, and then flow and penetrate around to make the inner wall of the entire bushing body 1 evenly covered with lubricating oil.

[0032] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A guide bushing for an automobile steering gear, characterized in that: The invention comprises a bushing body (1) and an oil storage ring (2), wherein a mounting ring groove (11) is provided on one side of the bushing body (1), the oil storage ring (2) is installed in the mounting ring groove (11), an oil cavity (21) for storing lubricating oil is provided inside the oil storage ring (2), a fluid channel (12) connected to the oil cavity (21) is provided on the inner wall of the bushing body (1), and a plurality of fluid channels (12) are evenly spaced along the circumference of the bushing body (1).

2. The guide bushing for an automobile steering gear according to claim 1, characterized in that: The fluid channel (12) comprises an axial channel (121) and a radial channel (122); the axial channel (121) is opened at the bottom of the mounting ring groove (11); and the radial channel (122) is opened on the inner wall of the bushing body (1) and communicates with the axial channel (121).

3. The guide bushing for an automobile steering gear according to claim 2, characterized in that: A plurality of radial channels (122) are provided, and the plurality of radial channels (122) are arranged at intervals along the extension direction of the same axial channel (121).

4. The guide bushing for an automobile steering gear according to claim 3, characterized in that: An oil ring groove (13) is provided on the inner wall of the bushing body (1), and a plurality of radial channels (122) located on the same horizontal plane in the circumferential direction of the bushing body (1) are all connected to the oil ring groove (13).

5. The guide bushing for an automobile steering gear according to claim 2, characterized in that: An oil outlet nozzle (22) is provided on one side of the oil storage ring (2) close to the bottom of the mounting ring groove (11) and is inserted into the axial channel (121) to inject lubricating oil into the axial channel (121). The number of the oil outlet nozzles (22) is consistent with the number of the axial channels (121) and corresponds one to one.

6. The guide bushing for an automobile steering gear according to claim 5, characterized in that: The oil outlet nozzle (22) is made of elastic material and is provided with an oil outlet gap (221) for squeezing the oil storage ring (2) and extruding the oil into the oil cavity (21).

7. The guide bushing for an automobile steering gear according to claim 6, characterized in that: The internal thread of the mounting ring groove (11) is provided with an extrusion ring (3) for extruding the oil storage ring (2); the extrusion ring (3) is located on a side of the oil storage ring (2) away from the bottom of the mounting ring groove (11).

8. The guide bushing for an automobile steering gear according to claim 7, characterized in that: A driving groove (31) for inserting a hexagonal wrench so as to drive the extrusion ring (3) to rotate is provided on the side of the extrusion ring (3) facing away from the oil storage ring (2).

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