An oil pan

Abstract

The present invention relates to an oil receiving pan, which is used to be connected to the outer side of a differential housing, and comprises a pan body and an oil receiving handle, wherein the oil receiving handle is connected to the front end of the pan body, and the upper end surface of the oil receiving handle is formed with an oil receiving portion that is concave downwards, and an oil receiving groove is formed on the pan body, and one side of the oil receiving groove is open, and the front end of the oil receiving groove is connected to the rear end of the oil receiving portion, and the bottom surface height of the oil receiving portion is higher than the bottom surface height of the oil receiving groove, and the oil receiving handle is arranged on a side close to the driving gear of the differential, and the side of the opening of the oil receiving groove is arranged opposite to the differential bearing of the differential; it ensures that the lubricating oil will not be directly thrown out from the inside of the differential to cause a reduction in the lubricating oil, and prevents wear and burning caused by poor lubrication when the vehicle runs at high speed or for a long time.

Description

Technical Field

[0001] The present invention relates to the technical field of drive axle lubrication, in particular to an oil receiving pan. Background Art

[0002] Every automotive drive axle is equipped with an interaxle differential, typically consisting of a left and right housing, along with planetary gears, side gears, and other components mounted within the differential. During operation, the planetary gears, side gears, and other relatively moving parts must be lubricated and cooled with sufficient lubricating oil. When the vehicle is stationary, a small amount of lubricating oil can enter the differential through holes in the left and right housings to lubricate the gears. However, when the vehicle is in motion, the oil level drops, preventing the differential and its bearings from direct contact with the lubricant. The centrifugal force generated by the rotation of the differential displaces the lubricant, rapidly depleting the oil supply. This can quickly lead to gear wear due to lack of lubrication. This problem is particularly common during high-speed and extended operation, seriously impacting transmission reliability. Summary of the Invention

[0003] In view of this, the present invention provides an oil receiving pan, which can ensure that the lubricating oil thrown out from the inside of the differential during the operation of the vehicle re-enters the inside of the differential to lubricate the components.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: an oil receiving pan, used to be connected to the outside of the differential housing, including a pan body and an oil receiving handle, the oil receiving handle being connected to the front end of the pan body, the upper end surface of the oil receiving handle being formed with a downwardly recessed oil receiving portion, an oil receiving groove being formed on the pan body, one side of the oil receiving groove being open, the front end of the oil receiving groove being connected to the rear end of the oil receiving portion, the bottom surface height of the oil receiving portion being higher than the bottom surface height of the oil receiving groove, the oil receiving handle being arranged close to the side of the driving gear of the differential, and the open side of the oil receiving groove being arranged opposite to the differential bearing of the differential.

[0005] The oil collecting pan provided in the present application adopts a design in which the oil collecting handle is arranged on one side of the driving gear, thereby ensuring that the oil thrown up by the driving gear will fall into the downwardly recessed oil collecting portion of the oil collecting handle, and then flow to the oil collecting tank. The oil in the oil collecting tank enters the interior of the differential through the gap between the differential housing and the main shaft from one side of the opening, thereby ensuring that the lubricating oil will not be directly thrown out from the interior of the differential, resulting in a reduction in the lubricating oil, and can be replenished in time, thereby preventing wear and burning caused by poor lubrication when the vehicle is running at high speed or for a long time.

[0006] Based on the above technical solution, this application also makes the following improvements:

[0007] Furthermore, the rear end of the bottom surface of the oil receiving portion is smoothly transitionally connected to the front end of the bottom surface of the oil receiving tank.

[0008] The beneficial effect is that it effectively ensures that the lubricating oil inside the oil receiving part can flow smoothly and fully into the oil tank.

[0009] Furthermore, a connecting flange is formed on the outer edge of the disc body for connecting to the differential housing.

[0010] Furthermore, through holes for installing fastening bolts are formed on the connecting flange.

[0011] The beneficial effect is that, by setting the connecting flange and the through hole, the oil receiving pan is ensured to be stably mounted on the housing of the differential without changing the overall structure of the differential as much as possible.

[0012] Furthermore, the disk body is a semicircular structure, and the upper end of the disk body is open.

[0013] The beneficial effect is that the upper end opening of the pan body can effectively catch the lubricating oil dripping from other components inside the drive axle located above the oil pan and send it to the inside of the differential, further ensuring the lubrication of the components inside the differential.

[0014] Furthermore, the disc body is formed with a clearance gap corresponding to the main shaft of the differential, and the lowest point of the clearance gap is higher than the lowest point of the main shaft through hole on the differential housing.

[0015] The beneficial effects are as follows: the avoidance gap can effectively prevent the oil receiving pan from interfering with the main shaft, and the height setting of the avoidance gap can effectively prevent the lubricating oil from flowing out of the avoidance gap.

[0016] Furthermore, a slope parallel to the top surface of the teeth of the driving gear is formed on a side of the oil receiving handle close to the driving gear.

[0017] The beneficial effect is that the setting of the inclined surface on the oil receiving handle can make the oil receiving handle closer to the driving gear when there is no interference with the driving gear, so as to ensure the accuracy and effectiveness of oil collection.

[0018] Furthermore, the disc body and the oil receiving handle are an integrally formed structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the three-dimensional structure of an oil receiving pan provided in an embodiment of the present invention;

[0020] Figure 2 Schematic diagram of the flow of lubricating oil in the oil receiving pan according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic cross-sectional view of the installation of the oil receiving pan according to an embodiment of the present invention;

[0022] Figure 4The figure is a schematic diagram of the three-dimensional structure of the oil receiving pan according to an embodiment of the present invention.

[0023] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0024] 10. Oil pan; 1. Pan body; 2. Oil receiving handle; 3. Differential; 11. Side wall; 12. Bottom wall; 13. Connecting flange; 1a. Oil trough; 1b. Avoidance notch; 2a. Oil receiving portion; 2b. Inclined surface; 13a. Through hole; 31. Differential housing; 32. Driving gear; 33. Differential bearing; 34. Main shaft. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, and are not used to limit the scope of the present invention.

[0026] like Figure 1 As shown, an embodiment of the present application provides an oil receiving pan 10 for connecting to the outside of the differential housing 31 , including a pan body 1 and an oil receiving handle 2 .

[0027] Among them, combined Figure 3 and Figure 4 As shown, the oil receiving handle 2 is connected to the front end of the disc body 1, and a downwardly recessed oil receiving portion 2a is formed on the upper end surface of the oil receiving handle 2. The oil receiving handle 2 is arranged close to the side of the driving gear 32 of the differential 3 to ensure that the oil receiving portion 2a on the oil receiving handle 2 can catch the lubricating oil thrown up by the driving gear 32 during the rotation of the driving gear 32 of the differential 3.

[0028] Combine Figure 2 As shown, an oil receiving groove 1a is formed on the disc body 1, and the front end of the oil receiving groove 1a is connected to the rear end of the oil receiving portion 2a. The bottom height of the oil receiving portion 2a is higher than the bottom height of the oil receiving groove 1a, so that the lubricating oil received by the oil receiving portion 2a will flow to the oil receiving groove 1a in the direction of the arrow in the figure.

[0029] Combine Figure 3 and Figure 4 As shown, one side of the oil tank 1a is open, and the open side of the oil tank 1a is arranged opposite to the differential bearing 33 of the differential 3. The oil in the oil tank 1a enters the interior of the differential 3 from the open side through the gap between the differential housing 31 and the main shaft 34.

[0030] This effectively ensures that the lubricating oil will not be directly thrown out of the differential 3 from the inside of the differential 3, which would lead to a reduction in the lubricating oil, thereby preventing wear and burning caused by poor lubrication when the vehicle runs at high speed or for a long time. In addition, a small amount of lubricating oil accumulated in the oil tank 1a can enter the interior of the differential bearing 33 to lubricate the differential bearing 33 and ensure its service life.

[0031] In order to allow the lubricating oil in the oil receiving portion 2a to flow smoothly and fully into the oil receiving tank 1a, the rear end of the bottom surface of the oil receiving portion 2a is smoothly connected to the front end of the bottom surface of the oil receiving tank 1a.

[0032] Among them, the disc body 1 is a semicircular structure. In the embodiment of the present application, the disc body 1 includes a side wall 11 located on the outside and a bottom wall 12 located at the bottom, wherein the side wall 11 is a semicircular structure as a whole, and the bottom wall 12 is a sheet structure bent into a semicircular arc. The upper end of the disc body 1 is open, which effectively collects the lubricating oil dripping from other components inside the drive axle above the oil receiving pan 10 and sends it to the inside of the differential, further ensuring the lubrication of the components inside the differential.

[0033] In some embodiments of the present application, the disc body 1 can be directly welded to the differential housing 31 by welding; in other embodiments of the present application, a connecting flange 13 is formed on the outer edge of the disc body 1 for connecting to the differential housing 31; more specifically, a through hole 13a for installing fastening bolts is formed on the connecting flange 13, which ensures that the oil pan 10 is stably installed on the differential housing 31 without changing the overall structure of the differential 3 as much as possible.

[0034] In a preferred embodiment of the present application, the disc body 1 is formed with a avoidance gap 1b corresponding to the main shaft 34 of the differential 3, that is, a avoidance gap 1b is opened at the center position of the top of the side wall 11, and the lowest point of the avoidance gap 1b is higher than the lowest point of the main shaft through hole on the differential housing 31. The avoidance gap 1b can effectively prevent the oil receiving pan 10 from interfering with the main shaft 34. At the same time, the height setting of the avoidance gap 1b can effectively prevent the lubricating oil from flowing out of the avoidance gap 1b.

[0035] More preferably, a slope 2b is formed on the side of the oil receiving handle 2 close to the driving gear 32 and is arranged parallel to the top end surface of the teeth of the driving gear 32. The setting of the slope 2b on the oil receiving handle 2 allows the oil receiving handle 2 to be closer to the driving gear 32 without interfering with the driving gear 32, so as to ensure the accuracy and effectiveness of oil collection.

[0036] In some embodiments of the present application, the disc body 1 and the oil collecting handle 2 are formed by welding. However, since welding will leave protrusions or welding spots inside, the connection between the oil collecting portion 2a and the oil tank 1a is not smooth. Therefore, in a preferred embodiment of the present application, the disc body 1 and the oil collecting handle 2 are an integrally formed structure.

[0037] When in use, the oil receiving pan 10 provided in the embodiment of the present application can effectively ensure that the lubricating oil will not be directly thrown out of the differential 3, resulting in a reduction of the lubricating oil, thereby preventing wear and burning caused by poor lubrication when the vehicle runs at high speed or for a long time, so that during the operation of the vehicle, the lubricating oil can continuously enter the interior of the differential 3 to lubricate the components.

[0038] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.

Claims

1. An oil pan for connecting to the outside of a differential case, characterized in that: The cam is connected to the front end of the oil collecting groove, and the upper end surface of the oil collecting groove is connected to the oil collecting groove of the oil collecting groove, and the oil collecting groove is connected to the oil collecting groove of the oil collecting groove. The bottom surface of the oil collecting groove is higher than the bottom surface of the oil collecting groove. The oil collecting handle is arranged on the side close to the driving gear of the differential, and the side of the opening of the oil collecting groove is arranged opposite to the differential bearing of the differential; the rear end of the bottom surface of the oil collecting portion is smoothly connected with the front end of the bottom surface of the oil collecting groove; the disk body is formed with a avoidance notch corresponding to the main shaft of the differential, and the lowest point of the avoidance notch is higher than the lowest point of the main shaft through-hole on the differential housing; the side of the oil collecting handle close to the driving gear is formed with an inclined surface parallel to the top tooth surface of the driving gear; the disk body is a semicircular structure, and the upper end of the disk body is open.

2. The oil receiving pan according to claim 1, characterized in that: A connecting flange is formed on the outer edge of the disc body for connecting with the differential housing.

3. The oil receiving pan according to claim 2, characterized in that: The connecting flange is formed with through holes for installing fastening bolts.

4. The oil receiving pan according to claim 1, characterized in that: The disc body and the oil receiving handle are an integrally formed structure.

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