Half axle gear capable of being continuously lubricated

Abstract

The utility model provides a half axle gear capable of being continuously lubricated, belongs to the field of automobile parts, and solves the problem that a part is rusted or is subjected to dry friction wear due to the fact that lubrication of the half axle gear is difficult to keep. The gear comprises a gear body and a rotating shaft, a connecting part and teeth are arranged on the gear body, an internal spline is arranged in the connecting part, a matched spline part is arranged on the rotating shaft, an installation hole is formed in the connecting part, an oil storage column is installed in the installation hole, the installation hole is connected with a first annular groove and a second annular groove, and a first oil outlet hole is connected to the first annular groove. An outlet of the first oil outlet is located between the teeth and connected with a second oil outlet through a second annular groove, an outlet of the second oil outlet is located between the inner splines, a sliding block is arranged in the oil storage column, and oil storage cotton is installed on the sliding block. The gear has the advantages that the oil storage column is arranged, centrifugal force generated when the gear body rotates is used for driving the sliding block to extrude the oil storage cotton, oil is promoted to flow out, the teeth, the internal spline and the spline part are lubricated, and rusting and dry friction abrasion caused by insufficient lubrication are prevented.

Description

Technical Field

[0001] The utility model belongs to the field of automotive parts, relates to a half shaft gear, and particularly relates to a half shaft gear capable of sustainable lubrication. Background Art

[0002] The half shaft gear is a gear used in the differential in the automotive structure. The gear shape is conical. The half shaft gear is connected to the wheel. When the vehicle turns, it adjusts the rotation speed of the wheels on both sides of the vehicle to ensure the stability of the vehicle when cornering and reduce the wear of the tires when the vehicle corners.

[0003] When the existing half shaft gears are meshed, as the vehicle moves at high speed, the lubricating oil applied to the half shaft gears will continuously leak, resulting in insufficient lubrication of the half shaft gears. The half shaft gears with insufficient lubrication are prone to rust problems. At the same time, due to the problem of insufficient lubrication, the half shaft gears will experience dry friction, leading to damage to the gears.

[0004] For example, a pressure-resistant left half shaft gear with the application number 202121023388.9 includes a gear body and a wheel shaft. Teeth are installed on the gear body. A first reinforcing plate is installed on one side of the gear body, and the first reinforcing plate is fixedly connected to the teeth. A second reinforcing plate is arranged on the inner wall of the gear body. The gear teeth are installed in the gear body and are provided with a third reinforcing plate. An annular groove is formed on the second reinforcing plate.

[0005] The above patent improves the strength of the gear body and the teeth by setting reinforcing plates, and improves the compressive capacity of the gear body. However, it lacks a structure for lubricating the half shaft gear, so that after the half shaft gear works for a period of time, dry friction occurs in the spline parts of the teeth and the wheel shaft, resulting in damage to the gear body and the wheel shaft, affecting the strength of the gear body and the teeth, and reducing the compressive capacity of the gear body. Content of the Utility Model

[0006] The purpose of the utility model is to provide a half shaft gear with lubricating oil stored inside and self-lubricating during work for the above problems existing in the prior art.

[0007] The utility model can be realized by the following technical solutions: a half shaft gear capable of sustainable lubrication, including a gear body and a rotating shaft. A spline part is provided on the rotating shaft. Teeth are provided on the gear body. A connecting part is arranged on the gear body. An internal spline is arranged in the connecting part. An installation hole is formed in the connecting part. An oil storage column is installed in the installation hole. The installation hole is connected to a first annular groove and a second annular groove. An oil outlet hole one is formed on the first annular groove. An oil outlet hole two is formed on the second annular groove. The outlet of the oil outlet hole one is opened between the teeth. The outlet of the oil outlet hole two is opened between the internal splines.

[0008] In the above-mentioned half-axle gear with sustainable lubrication, a limiting plate is arranged inside the connecting part. A screw hole is formed on the limiting plate, and a corresponding connecting hole is arranged on the rotating shaft. The screw hole and the connecting hole are connected by screws.

[0009] In the above-mentioned half-axle gear with sustainable lubrication, the oil storage column and the mounting hole are connected by threads.

[0010] In the above-mentioned half-axle gear with sustainable lubrication, a counterbore is arranged on the mounting hole, and a sealing part is arranged on the oil storage column.

[0011] In the above-mentioned half-axle gear with sustainable lubrication, a sealing ring is arranged on the sealing part, and a corresponding sealing groove is formed on the counterbore.

[0012] In the above-mentioned half-axle gear with sustainable lubrication, a sliding block is arranged inside the oil storage column, and an oil storage cotton is fixed on the sliding block.

[0013] In the above-mentioned half-axle gear with sustainable lubrication, a pressing ring is installed on the oil storage column, and a chamfer is formed on the pressing ring.

[0014] In the above-mentioned half-axle gear with sustainable lubrication, an internal hexagonal groove is formed on the sealing part.

[0015] Compared with the prior art, the advantages of the present utility model are as follows: An oil storage column is installed inside the half-axle gear. An oil storage cotton and a slider are installed inside the oil storage column. Affected by the centrifugal force generated during the high-speed rotation of the gear, the slider presses the oil storage cotton, so that the lubricating oil enters the oil outlet hole through the annular groove to lubricate the tooth teeth and the internal spline. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional view of the half-axle gear with sustainable lubrication;

[0017] Figure 2 is a cross-sectional view of the half-axle gear with sustainable lubrication;

[0018] Figure 3 is a cross-sectional view of the gear body of the half-axle gear with sustainable lubrication;

[0019] Figure 4 is a three-dimensional view of the rotating shaft of the half-axle gear with sustainable lubrication;

[0020] Figure 5 is Figure 2 an enlarged view of circle A in

[0021] Figure 6 is Figure 3 an enlarged view of circle B in

[0022] Among them, 1 is the gear body; 11 are the teeth; 12 is the connecting part; 121 is the internal spline; 122 is the mounting hole; 122a is the counterbore; 122b is the sealing groove; 123 is the limiting plate; 123a is the screw hole; 13 is the first annular groove; 131 is the first oil outlet hole; 14 is the second annular groove; 141 is the second oil outlet hole; 2 is the rotating shaft; 21 is the spline part; 22 is the connecting hole; 3 is the oil storage column; 31 is the sealing part; 311 is the sealing ring; 32 is the extrusion ring; 321 is the chamfer; 33 is the internal hexagonal groove; 4 is the screw; 5 is the thread; 6 is the sliding block; 61 is the oil storage cotton. Detailed implementation manners

[0023] The following are specific embodiments of the present utility model and in combination with the accompanying drawings, the technical solutions of the present utility model will be further described, but the present utility model is not limited to these embodiments.

[0024] As Figures 1 to 5 shown, the present utility model can be realized through the following embodiments: A half shaft gear capable of sustainable lubrication includes a gear body 1 and a rotating shaft 2. A spline part 21 is provided on the rotating shaft 2, teeth 11 are provided on the gear body 1, a connecting part 12 is provided on the gear body 1, an internal spline 121 is provided inside the connecting part 12, a mounting hole 122 is provided inside the connecting part 12, an oil storage column 3 is installed inside the mounting hole 122, the mounting hole 122 is connected to a first annular groove 13 and a second annular groove 14, a first oil outlet hole 131 is provided on the first annular groove 13, a second oil outlet hole 141 is provided on the second annular groove 14, the outlet of the first oil outlet hole 131 is opened between the teeth 11, and the outlet of the second oil outlet hole 141 is opened between the internal splines 121.

[0025] The internal spline 121 provided on the connecting part 12 cooperates with the spline part 21 of the rotating shaft 2, so that the torque transmitted by the gear body 1 can be transmitted to the wheel through the rotating shaft 2; the oil storage column 3 is used for storing oil. When the half shaft gear rotates, the oil inside the oil storage column 3 flows into the meshing part of the teeth 11 and the meshing part of the spline part 21 and the internal spline 121 under the influence of the centrifugal force generated during the rotation of the half shaft gear; the first annular groove 13 and the second annular groove 14 are used for accommodating the oil flowing out of the oil storage column 3 and guiding the oil to flow into the meshing part of the teeth 11 through the first oil outlet hole 131 and into the meshing part of the internal spline 121 and the spline part 21 through the second oil outlet hole 141.

[0026] As Figures 1 to 3 shown, a limiting plate 123 is provided inside the connecting part 12, a screw hole 123a is provided on the limiting plate 123, a corresponding connecting hole 22 is provided on the rotating shaft 2, and the screw hole 123a and the connecting hole 22 are connected by a screw 4. The setting of the limiting plate 123 facilitates the installation of the rotating shaft 2; the screw 4 passes through the connecting hole 22 and the screw hole 123a to connect the gear body 1 and the rotating shaft 2 into one body.

[0027] As Figure 2And Figure 5 As shown, the oil storage column 3 and the mounting hole 122 are connected by threads. The threaded connection makes it difficult for the oil storage column 3 to fall off from the mounting hole 122 when the gear body 1 rotates, and the tight engagement between the threads improves the sealing performance between the oil storage column 3 and the mounting hole 122, preventing oil leakage between the mounting hole 122 and the oil storage column 3.

[0028] As Figure 2 , Figure 3 , Figure 5 And Figure 6 As shown, a countersunk head 122a is provided on the mounting hole 122, and a sealing portion 31 is provided on the oil storage column 3. The countersunk head 122a and the sealing portion 31 cooperate to form a turning point between the mounting hole 122 and the oil storage column 3, improving the sealing performance and preventing oil leakage.

[0029] As Figure 2 , Figure 3 , Figure 5 And Figure 6 As shown, a sealing ring 311 is provided on the sealing portion 31, and a corresponding sealing groove 122b is provided on the countersunk head 122a. The sealing ring 311 and the sealing groove 122b cooperate, and the sealing ring 311 fills the sealing groove 122b to block the channel for oil to flow out, improving the sealing performance between the countersunk head 122a and the sealing portion 31.

[0030] As Figure 2 And Figure 5 As shown, a sliding block 6 is provided inside the oil storage column 3, and an oil storage cotton 61 is fixed on the sliding block 6. The oil storage cotton 61 is used to absorb and store oil. The sliding block 6 is used to slide under the influence of centrifugal force when the gear body 1 rotates, squeezing the oil storage cotton 61, so that the oil flows out from the oil storage cotton 61 and flows into the first annular groove 13 and the second annular groove 14. The oil storage cotton 61 is fixed on the sliding block 6, which is convenient for the sliding block 6 to drive the oil storage cotton 61 to move, preventing the oil storage column 3 from being unable to provide lubricating oil immediately when the gear body 1 restarts.

[0031] As Figure 2 And Figure 5 As shown, a pressing ring 32 is installed on the oil storage column 3, and a chamfer 321 is provided on the pressing ring 32. The pressing ring 32 is provided to limit the displacement of the oil storage cotton 61 and cooperate with the sliding block 6 to squeeze the oil storage cotton 61. The chamfer 321 is provided to facilitate the guiding of the oil to flow out of the oil storage column 3.

[0032] As Figure 1 , Figure 2 And Figure 5 As shown, an internal hexagonal groove 33 is provided on the sealing portion 31. The internal hexagonal groove 33 is provided to facilitate the user to take out the oil storage column 3 with an internal hexagonal wrench and replenish the oil to the oil storage cotton 61.

[0033] Working principle of the utility model: When the gear body 1 drives the rotating shaft 2 to rotate, a centrifugal force is generated on the gear body 1. The sliding block 6 in the oil storage column 3 moves towards the outside of the gear under the influence of the centrifugal force and stops when the oil storage cotton 61 contacts the extrusion ring 32. The sliding block 6 and the extrusion ring 32 extrude the oil storage cotton 61, and the oil fluid flows out from the oil storage cotton 61 and flows into the first annular groove 13 and the second annular groove 14, further flowing into the first oil outlet hole 131 and the second oil outlet hole 141, and finally flowing into the meshing part of the tooth 11 and the meshing part of the spline part 21 and the internal spline 121. By inserting an inner hexagon wrench into the inner hexagon groove 33, unscrewing the oil storage column 3, dropping the oil fluid into the oil storage cotton 61, and finally restoring the oil storage column 3, the replenishment of the oil fluid in the oil storage column 3 is completed.

[0034] The specific embodiments described herein are merely illustrative of the spirit of the utility model. Those skilled in the art of the utility model can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the utility model or exceed the scope defined by the appended claims.

[0035] Although various terms are used more in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional limitation is contrary to the spirit of the utility model.

Claims

1. A continuously lubricated half-axle gear, comprising a gear body (1) and a rotating shaft (2), wherein the rotating shaft (2) is provided with a spline portion (21), and the gear body (1) is provided with teeth (11), characterized in that: The gear body (1) is provided with a connecting portion (12), an internal spline (121) is provided in the connecting portion (12), a mounting hole (122) is provided in the connecting portion (12), an oil storage column (3) is installed in the mounting hole (122), the mounting hole (122) is connected with an annular groove 1 (13) and an annular groove 2 (14), an oil outlet hole 1 (131) is provided in the annular groove 1 (13), an oil outlet hole 2 (141) is provided in the annular groove 2 (14), an outlet of the oil outlet hole 1 (131) is provided between the teeth (11), and an outlet of the oil outlet hole 2 (141) is provided between the internal splines (121).

2. A continuously lubricated side gear according to claim 1, characterized in that: A limit plate (123) is arranged in the connection portion (12), a screw hole (123a) is provided on the limit plate (123), a corresponding connection hole (22) is provided on the rotating shaft (2), and the screw hole (123a) and the connection hole (22) are connected by a screw (4).

3. The continuously lubricated side gear according to claim 1, characterized in that: The oil storage column (3) and the mounting hole (122) are connected via a thread (5).

4. The continuously lubricated side gear according to claim 1, characterized in that: The mounting hole (122) is provided with a countersunk head (122a), and the oil storage column (3) is provided with a sealing portion (31).

5. A continuously lubricated side gear according to claim 4, characterized in that: The sealing portion (31) is provided with a sealing ring (311), and the countersunk head (122a) is provided with a corresponding sealing groove (122b).

6. The continuously lubricated side gear according to claim 1, characterized in that: A sliding block (6) is arranged inside the oil storage column (3), and an oil storage cotton (61) is arranged on the sliding block (6).

7. The continuously lubricated side gear according to claim 1, characterized in that: An extrusion ring (32) is installed on the oil storage column (3), and a chamfer (321) is provided on the extrusion ring (32).

8. The continuously lubricated side gear according to claim 4, characterized in that: The sealing portion (31) is provided with a hexagonal groove (33).

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