Integrated differential mechanism made of ADI material
By using an integrated differential made of ADI material, efficient differential oil filling and lightweight design are achieved, solving the problems of low filling efficiency and heavy weight of traditional differentials, thus improving maintenance efficiency and service life.
Patent Information
- Application Number
- CN202520452999.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-15
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2035-03-15
AI Technical Summary
Traditional differential oil filling processes are inefficient and have complex housing connection methods, resulting in heavy weight.
It adopts an integrated differential made of ADI material, and features a high-efficiency differential oil replacement component inside the protective housing. The oil volume is controlled by a tapered block and sealing bolts, combined with the lightweight characteristics of ADI material.
It improves the efficiency of differential oil filling, reduces external leakage, lowers the overall weight, and extends service life.
Smart Images

Figure CN223498596U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of differential equipment technology, specifically relating to an integrated differential made of ADI material. Background Technology
[0002] A differential is a device used in a car's drivetrain that effectively distributes driving force to the wheels. Differentials are commonly used in rear-wheel drive and four-wheel drive vehicles. The main function of a differential is to balance and control the difference in rotational speed between the wheels, especially when cornering. When a vehicle is cornering, the inner wheel needs a lower rotational speed, while the outer wheel needs a higher rotational speed. The differential meets this need by allowing the wheels to rotate at different speeds.
[0003] When a differential is in operation, the friction between the mechanical gears requires lubrication with differential oil. After a period of use, the differential oil needs to be changed. When changing the differential oil, due to the opaque housing, the oil is often overflowed in an attempt to fill it completely. This necessitates wiping and cleaning after each oiling, resulting in low overall efficiency. Furthermore, traditional differential housings typically use bolts, rivets, or welding to connect the forged steel main reduction gear. This often involves more processing steps and increases weight. To address these issues, an integrated differential made of ADI material is proposed. Utility Model Content
[0004] To address the problems existing in the background technology, this utility model provides an integrated differential made of ADI material; it has higher strength and a more efficient maintenance process.
[0005] This utility model provides an integrated differential made of ADI material, including a differential body, a protective shell outside the differential body, and a high-efficiency differential oil replacement component inside the protective shell. The high-efficiency differential oil replacement component includes an oil drain port and an oil inlet located on the protective shell. The protective shell has a connecting pipe corresponding to the oil inlet. One end of the connecting pipe is connected to the oil inlet, and the other end of the connecting pipe is connected to the inner wall of the protective shell. A conical block is slidably connected inside the connecting pipe.
[0006] Furthermore, a sealing bolt is threaded onto the oil drain port.
[0007] Furthermore, the oil inlet is threaded with two sealing bolts.
[0008] Furthermore, a sliding rod is fixedly installed inside the connecting pipe, and the sliding rod is inserted into the conical block.
[0009] Furthermore, the differential body is made of ADI material.
[0010] Furthermore, the density of the cone-shaped block is less than the density of the differential oil.
[0011] The beneficial effects of this utility model are:
[0012] This invention improves the structure of the oil inlet by utilizing the buoyancy of the differential oil on the conical block, allowing the conical block to rise and fall automatically. After rising to a certain height, it blocks the connecting pipe, preventing oil from entering and thus avoiding excessive differential oil addition. It also reduces differential oil leakage and improves overall maintenance efficiency. By using ADI material, the service life of the differential is increased. Tests show that the weight of the integrated differential housing is reduced by 26% compared to conventional differential housings. Attached Figure Description
[0013] Figure 1 This is a top-view perspective view of an integrated differential made of ADI material according to this utility model.
[0014] Figure 2 This is a bottom-view perspective view of an integrated differential made of ADI material according to this utility model.
[0015] Figure 3 This is a schematic diagram of the protective shell of an integrated differential made of ADI material after it has been separated according to this utility model.
[0016] Figure 4 This is a cross-section of a protective shell for an integrated differential made of ADI material, according to this utility model. Figure 1 .
[0017] Figure 5 This is a cross-section of a protective shell for an integrated differential made of ADI material, according to this utility model. Figure 2 .
[0018] Figure 6 This is a schematic diagram of the differential body of an integrated differential made of ADI material according to this utility model.
[0019] As shown in the figure:
[0020] 1. Differential body, 2. Protective housing, 3. Slide bar, 4. Oil drain port, 5. Oil inlet port, 6. Connecting pipe, 7. Conical block, 8. Sealing bolt one, 9. Sealing bolt two. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0023] Please refer to the accompanying diagrams for all instruction manuals:
[0024] An integrated differential made of ADI material includes a differential body 1, a protective shell 2 on the outside of the differential body 1, and a differential oil high-efficiency replacement component inside the protective shell 2.
[0025] The differential oil high-efficiency replacement component includes an oil drain port 4 and an oil inlet port 5 located on the protective housing 2. The protective housing 2 is provided with a connecting pipe 6 corresponding to the oil inlet port 5. One end of the connecting pipe 6 is connected to the oil inlet port 5, and the other end of the connecting pipe 6 is connected to the inner wall of the protective housing 2. A conical block 7 is slidably connected inside the connecting pipe 6.
[0026] As described above, waste differential oil is drained through drain port 4, and new differential oil is injected into the interior through inlet port 5. The differential oil enters the connecting pipe 6 through inlet port 5 and finally enters the space inside the protective shell 2 to lubricate the differential body 1. As the differential oil level in the protective shell 2 rises, it will drive the cone block 7 to rise. After reaching the limit oil level, the cone block 7 will be stuck on the connecting pipe 6, so that the connecting pipe 6 can no longer be filled with oil.
[0027] As a technical optimization of this utility model, a sealing bolt 8 is threadedly connected to the oil drain port 4;
[0028] As can be seen from the above description, the sealing bolt 8 can effectively seal the upper drain port 4, preventing differential oil leakage.
[0029] As a technical optimization of this utility model, the oil inlet 5 is threaded with a sealing bolt 9;
[0030] As can be seen from the above description, the sealing bolt 29 can effectively seal the upper oil inlet 5, preventing differential oil leakage.
[0031] As a technical optimization of this utility model, a sliding rod 3 is fixedly installed inside the connecting pipe 6, and the sliding rod 3 is inserted into the conical block 7.
[0032] As can be seen from the above description, the slide bar 3 makes the movement of the conical block 7 more stable and prevents it from getting stuck against the outer wall of the connecting pipe 6.
[0033] As a technical optimization of this utility model, the differential body 1 is made of ADI material;
[0034] As described above, ADI material, or isothermal hardened ductile iron, has important applications in the differential field. ADI material has high strength, which can withstand the large torque and stress generated by the differential body 1 during operation. It has good wear resistance, which can reduce the wear of internal components such as gears in the differential body 1. ADI material has a relatively low density, which can effectively reduce the weight of the vehicle while meeting the performance requirements of the differential body 1, thus helping to improve the vehicle's fuel economy and handling performance.
[0035] As a technical optimization of this utility model, the density of the cone block 7 is less than the density of the differential oil;
[0036] As can be seen from the above description, it is important to ensure that the cone block 7 can effectively float on the surface of the differential oil.
[0037] The working process of this utility model is as follows:
[0038] When performing maintenance on the differential body 1, first unscrew the sealing bolt 18 and drain the waste differential oil through the drain port 4. After cleaning, screw it back on. Next, unscrew the sealing bolt 29 and inject new differential oil into the interior through the oil inlet 5. The differential oil enters the connecting pipe 6 through the oil inlet 5 and finally enters the space inside the protective housing 2 to lubricate the differential body 1. As the differential oil level in the protective housing 2 rises, it will drive the cone block 7 to rise. After reaching the limit oil level, the cone block 7 will be stuck on the connecting pipe 6, preventing further oil injection into the connecting pipe 6. Once the oil injection is stopped, simply screw the sealing bolt 29 back on to complete the maintenance.
[0039] The present invention and its embodiments have been described above. This description is not restrictive, and the specific embodiments shown are only one of the embodiments of the present invention. The actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.
Claims
1. An integrated differential made of ADI material, comprising a differential body, characterized in that: The differential body is provided with a protective shell, and the protective shell is provided with a differential oil high-efficiency replacement component. The differential oil high-efficiency replacement component includes an oil drain port and an oil inlet located on the protective shell. The protective shell is provided with a connecting pipe corresponding to the oil inlet. One end of the connecting pipe is connected to the oil inlet, and the other end of the connecting pipe is connected to the inner wall of the protective shell. A conical block is slidably connected inside the connecting pipe.
2. The integrated differential made of ADI material according to claim 1, characterized in that: The differential body is made of ADI material.
3. The integrated differential made of ADI material according to claim 1, characterized in that: A sealing bolt is threaded onto the oil drain port.
4. The integrated differential made of ADI material according to claim 1, characterized in that: The oil inlet is threaded with two sealing bolts.
5. The integrated differential made of ADI material according to claim 1, characterized in that: A sliding rod is fixedly installed inside the connecting pipe, and the sliding rod is inserted into the conical block.
6. The integrated differential made of ADI material according to claim 1, characterized in that: The density of the cone-shaped block is less than the density of the differential oil.