Automobile oil pan
By incorporating a limiting plate, a slot, and a limiting ring on the oil pan, the problem of reduced sealing performance after oil pan disassembly is solved, resulting in a better sealing effect and preventing oil leakage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-04
- Publication Date
- 2026-03-31
AI Technical Summary
The sealing performance of existing automotive oil pans decreases during disassembly and reinstallation, leading to oil leakage and affecting normal use.
A car oil pan structure was designed, including a shell, a limiting plate, a gasket, and a limiting ring. By setting a slot and a limiting groove on the limiting plate, and using a silicone limiting ring in conjunction with an airbag and a rubber gasket, the sealing performance is enhanced.
It improves the sealing effect of the oil pan, prevents oil and water leakage, enhances the sealing performance after installation, and ensures normal vehicle use.
Smart Images

Figure CN224064422U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of auto parts, specifically to an automotive oil pan. Background Technology
[0002] The oil pan is located at the bottom of the engine: it is removable and seals the crankcase as the outer shell of the oil reservoir. The oil pan is mostly made of thin steel plate by stamping. More complex shapes are generally made of cast iron or aluminum alloy by casting. It is equipped with an oil stabilizing baffle to avoid oil surface oscillation and splashing caused by the diesel engine bumps, and to facilitate the sedimentation of impurities in the lubricating oil.
[0003] However, when using modern car oil pans, the sealing performance is reduced after the oil pan is removed and installed, leading to oil leakage and affecting its normal use. Utility Model Content
[0004] The purpose of this utility model is to provide an automotive oil pan that addresses the problem of reduced sealing performance leading to oil leakage and affecting normal use after the oil pan is removed and installed.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an automotive oil pan, including a housing, a limiting plate fixed to the top of the outer side of the housing, a slot formed on the top of the limiting plate, a pad provided above the limiting plate, the pad cooperating with the slot, a limiting groove formed at the bottom of the limiting plate on one side of the slot, and limiting rings cooperating with the limiting groove fixed at both the bottom and top of the outer side of the pad.
[0006] As a further embodiment of this utility model: the housing includes an inner shell and an outer shell, and a cavity is provided between the inner shell and the outer shell.
[0007] As a further improvement of this utility model, bolt holes are evenly provided on the top of the limiting plate.
[0008] As a further improvement of this utility model, the pad and the limiting ring are made of silicone.
[0009] As a further improvement of this utility model: a rubber pad is provided at the bottom of the outer shell, and the cross-section of the outer shell is a trapezoidal structure.
[0010] As a further improvement of this utility model: an airbag is provided inside the limiting ring, and the airbag has a ring structure.
[0011] As a further improvement of this utility model, the top of the limiting plate is provided with teeth on the inner side of the bolt holes.
[0012] As a further improvement of this utility model: the limiting groove and the card slot are interconnected, and the limiting groove and the card slot are respectively attached to the limiting ring and the pad.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. By setting a slot at the top of the limiting plate and a limiting groove on one side of the slot, and setting limiting rings at the top and bottom of the pad to cooperate with the limiting groove, the overall pad and the housing can be better sealed. At the same time, after installation, the housing is connected to the vehicle with bolts, and the airbag is gradually compressed. With the help of the limiting rings, the overall sealing performance is better, and oil and water leakage is avoided. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a cross-sectional view of the gasket of this utility model;
[0017] Figure 3 This is a cross-sectional view of the housing of this utility model.
[0018] In the diagram: 1. Shell; 2. Limiting plate; 3. Slot; 4. Bolt hole; 5. Limiting groove; 6. Pad; 7. Limiting ring; 8. Airbag; 9. Inner shell; 10. Outer shell; 11. Cavity. Detailed Implementation
[0019] 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.
[0020] Please see Figures 1-3 In this embodiment of the utility model, the car oil pan includes a housing 1. A limiting plate 2 is fixed to the top of the outer side of the housing 1. A slot 3 is provided on the top of the limiting plate 2. A pad 6 is provided above the limiting plate 2. The pad 6 and the slot 3 cooperate with each other. A limiting groove 5 is provided at the bottom of the limiting plate 2 on one side of the slot 3. A limiting ring 7 that cooperates with the limiting groove 5 is fixed at both the bottom and top of the outer side of the pad 6. The pad 6 and the limiting ring 7 are made of silicone. The limiting groove 5 and the slot 3 are interconnected. The limiting groove 5 and the slot 3 are respectively attached to the limiting ring 7 and the pad 6.
[0021] In this embodiment: the silicone limiting ring 7 can be deformed, so that it can enter the interior of the limiting groove 5 from the slot 3 after deformation. When the oil pan is installed, the opening of the oil pan faces upward, so that another set of limiting rings 7 on the pad 6 enters the interior of the limiting groove 5 from the slot 3 pre-cut in the vehicle, and is fixedly connected with bolts to improve the sealing effect.
[0022] Please refer to this carefully. Figure 3 The housing 1 includes an inner shell 9 and an outer shell 10. A cavity 11 is provided between the inner shell 9 and the outer shell 10. A rubber pad is provided at the bottom of the outer shell 10, and the cross-section of the outer shell 10 is a trapezoidal structure.
[0023] In this embodiment, the housing 1 is divided into an inner shell 9 and an outer shell 10. The cross-section of the outer shell 10 is trapezoidal, which can reduce wind resistance. At the same time, the rubber pad prevents the bottom of the outer shell 10 from being scratched. The cavity 10 can also provide a certain buffer to prevent the inner shell 9 from breaking when it is impacted.
[0024] Please refer to this carefully. Figure 1 and Figure 2 The top of the limiting plate 2 is evenly provided with bolt holes 4, and the inside of the limiting ring 7 is provided with an air bladder 8. The air bladder 8 is a ring structure, and the top of the limiting plate 2 is provided with teeth on the inside of the bolt holes 4.
[0025] In this embodiment: the bolt holes 4 facilitate the installation of the housing 1 on the bottom of the vehicle using bolts. The airbag is installed and deformed during installation of the bottom housing 1, increasing the lateral contact surface of the gasket 6 and thus increasing the sealing performance. The teeth are designed to form a groove when the gasket 6 is compressed, increasing the sealing area of the gasket 6 and preventing water leakage. The groove can effectively prevent the leakage of rice, oil and water from the gaps.
[0026] Working principle: When installing the housing 1, first place the pad 6 on top of the housing 1, and squeeze the pad 6 so that the limiting ring 7 enters the limiting groove 5 from the slot 3, completing the connection between the pad 6 and the housing 1. Then repeat the above steps to complete the connection between the pad 6 and the bottom parts of the car. Then use bolts with bolt holes 4 to complete the installation and fixation of the housing 1. At the same time, the airbag 8 inside the pad 6 is gradually squeezed outward to increase the contact area between the housing 1 and the pad 6, avoiding oil and water leakage. At the same time, when the car is moving, when the outer shell 10 is hit, it works with the cavity 11 to buffer the impact and prevent damage to the inner shell 9, which would cause the car to malfunction.
[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. An oil pan for an automobile, comprising a housing (1), characterized in that, The top of the shell (1) outside is fixed with a limiting plate (2), the top of the limiting plate (2) is provided with a clamping groove (3), the upper side of the limiting plate (2) is provided with a pad (6), the pad (6) is matched with the clamping groove (3), the bottom of the limiting plate (2) is provided with a limiting groove (5) on the side of the clamping groove (3), the bottom and the top of the pad (6) are fixed with a limiting ring (7) matched with the limiting groove (5).
2. The automotive oil pan according to claim 1, characterized by The shell (1) comprises an inner shell (9) and an outer shell (10), and a cavity (11) is arranged between the inner shell (9) and the outer shell (10).
3. The automotive oil pan according to claim 1, characterized by The top of the limiting plate (2) is uniformly provided with a bolt hole (4).
4. The automotive oil pan according to claim 1, characterized by The pad (6) and the limiting ring (7) are made of silica gel.
5. The automotive oil pan according to claim 2, wherein The bottom of the outer shell (10) is provided with a rubber pad, and the cross section of the outer shell (10) is a trapezoidal structure.
6. The automotive oil pan according to claim 1, characterized by The inside of the limiting ring (7) is provided with an air bag (8), and the air bag (8) is an annular structure.
7. The automotive oil pan according to claim 3, characterized by The top of the limiting plate (2) is provided with a tooth on the inner side of the bolt hole (4).
8. The automotive oil pan according to claim 3, characterized by The limiting groove (5) and the clamping groove (3) are in communication, and the limiting groove (5) and the clamping groove (3) are respectively matched with the limiting ring (7) and the pad (6).