Waterproof oil seal structure of electric vehicle

Abstract

The utility model relates to the technical field of electric vehicles, in particular to a waterproof oil seal structure of an electric vehicle, which comprises a sealing part, the sealing part is of an annular structure, a first sealing lip is fixedly connected in the sealing part, and a plurality of second sealing lips fixedly connected with the sealing part are arranged below the first sealing lip. The sealing part is divided into a plurality of sealing cavities by the second sealing lip and the first sealing lip, an abutting ring is connected to the first sealing lip in an abutting mode, a spring is connected to the abutting ring through a connecting mechanism, and the spring is in a stretching state. According to the oil seal, water and silt are prevented from entering the oil seal, so that the sealing effect is ensured, and the service life of the oil seal is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle technology, and in particular to a waterproof oil seal structure for electric vehicles. Background Technology

[0002] An oil seal is a mechanical component used to prevent fluids such as lubricating oil from leaking through gaps in a machine. When oil seals are applied to the shafts of electric vehicles, the seal lip wears down during prolonged rotation due to the contact between the seal and the shaft. This creates a gap between the seal lip and the shaft, allowing internal oil to leak and affecting the lifespan of the oil seal. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies that result in gaps between the sealing lip and the rotating shaft, leading to internal oil leakage and affecting the lifespan of the oil seal. Therefore, this invention proposes a waterproof oil seal structure for electric vehicles.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A waterproof oil seal structure for electric vehicles is designed, including a sealing part with an annular structure. A first sealing lip is fixedly connected inside the sealing part. A plurality of second sealing lips are fixedly connected to the sealing part below the first sealing lip. The second sealing lips and the first sealing lips divide the sealing part into a plurality of sealing cavities. An abutting ring abuts against the first sealing lip. A spring is connected to the abutting ring through a connecting mechanism. The spring is in a stretched state.

[0006] Preferably, the connecting mechanism includes a connecting part, which is fixedly connected to the abutment ring and fixedly connected to the spring.

[0007] Preferably, a column is provided through the connecting part, and the column is fixedly connected to the sealing part.

[0008] Preferably, a skeleton is provided inside the sealing part.

[0009] Preferably, the upper end of the column is provided with a threaded section, and a limit nut is threadedly connected to the threaded section.

[0010] Preferably, the spring is a stainless steel spring.

[0011] Preferably, the lower end face of the abutment ring is in contact with the first sealing lip.

[0012] The present invention proposes a waterproof oil seal structure for electric vehicles, which has the following advantages: by using the restoring force of a spring, the abutment ring abuts against the first sealing lip. Even after the first sealing lip wears down, the sealing part of the first sealing lip moves downward and still abuts against the rotating shaft, thus preventing the entry of water and mud, ensuring the sealing effect, and helping to extend the service life of the oil seal. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a waterproof oil seal structure for electric vehicles proposed in this utility model;

[0014] Figure 2 This is a three-dimensional sectional view of a waterproof oil seal structure for electric vehicles proposed in this utility model;

[0015] Figure 3 This utility model proposes a waterproof oil seal structure for electric vehicles. Figure 1 Enlarged view of section A in the middle.

[0016] In the diagram: 1. Shaft; 2. Sealing part; 3. Connecting part; 4. Second sealing lip; 5. Column; 6. Spring; 7. Limiting nut; 8. Abutment ring; 9. First sealing lip; 10. Sealing cavity; 11. Frame. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Example 1: Refer to Figure 1-3 A waterproof oil seal structure for electric vehicles includes a sealing part 2, a skeleton 11 is provided inside the sealing part 2, the sealing part 2 has an annular structure, and a first sealing lip 9 is fixedly connected inside the sealing part 2. The first sealing lip 9 mainly seals external mud and water, and both the first sealing lip 9 and the second sealing lip 4 abut against the rotating shaft 1.

[0019] Below the first sealing lip 9, there are multiple second sealing lips 4 that are fixedly connected to the sealing part 2. Since the first sealing lip 9 is located on the outermost side, it is prone to damage. After the first sealing lip 9 is damaged, multiple second sealing lips 4 are used to form an independent seal, which helps to improve the sealing effect.

[0020] Multiple second sealing lips 4 and first sealing lips 9 divide the sealing part 2 into multiple sealing cavities 10. The sealing cavities 10 are used to fill lubricating oil. An abutting ring 8 abuts against the first sealing lip 9. The lower end face of the abutting ring 8 is in contact with the first sealing lip 9. A spring 6 is connected to the abutting ring 8 through a connecting mechanism. The spring 6 is in a stretched state. By using the restoring force of the spring 6, the abutting ring 8 will abut against the first sealing lip 9. After the first sealing lip 9 is worn, the sealing part of the first sealing lip 9 will move downward and still abut against the rotating shaft 1, avoiding the entry of water and mud, thereby ensuring the sealing effect and helping to extend the service life of the oil seal.

[0021] The connecting mechanism includes a connecting part 3, which is fixedly connected to the abutment ring 8. The connecting part 3 is also fixedly connected to a spring 6, which is a stainless steel spring to prevent corrosion.

[0022] Example 2: Refer to Figure 1-3 As another preferred embodiment of this utility model, based on embodiment 1, a column 5 is provided through the connecting part 3. The column 5 is fixedly connected to the sealing part 2. By using the column 5, the connecting part 3 is limited, preventing the abutment ring 8 from shifting. This ensures that the abutment ring 8 can only move on the axis of the rotating shaft 1, thus guaranteeing the connection effect at both ends of the spring 6.

[0023] Example 3: Reference Figure 3 As another preferred embodiment of this utility model, based on embodiment 2, the upper end of the column 5 is provided with a threaded section, and a limit nut 7 is threadedly connected to the threaded section. By using the nut 7 to limit the connection part 3, the connection part 3 is prevented from detaching from the column 5 under the action of external force.

[0024] 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. A waterproof oil seal structure for electric vehicles, comprising a sealing part (2), characterized in that, The sealing part (2) has an annular structure. A first sealing lip (9) is fixedly connected inside the sealing part (2). A plurality of second sealing lips (4) are fixedly connected to the sealing part (2) below the first sealing lip (9). The plurality of second sealing lips (4) and the first sealing lip (9) divide the sealing part (2) into a plurality of sealing cavities (10). An abutting ring (8) abuts against the first sealing lip (9). A spring (6) is connected to the abutting ring (8) through a connecting mechanism. The spring (6) is in a stretched state.

2. The waterproof oil seal structure for electric vehicles according to claim 1, characterized in that, The connecting mechanism includes a connecting part (3), which is fixedly connected to the abutment ring (8) and is fixedly connected to the spring (6).

3. The waterproof oil seal structure for electric vehicles according to claim 2, characterized in that, A column (5) is provided through the connecting part (3), and the column (5) is fixedly connected to the sealing part (2).

4. The waterproof oil seal structure for electric vehicles according to claim 3, characterized in that, A frame (11) is provided inside the sealing part (2).

5. The waterproof oil seal structure for electric vehicles according to claim 4, characterized in that, The upper end of the column (5) is provided with a threaded section, and a limit nut (7) is threadedly connected to the threaded section.

6. The waterproof oil seal structure for electric vehicles according to claim 1, characterized in that, The spring (6) is a stainless steel spring.

7. The waterproof oil seal structure for electric vehicles according to claim 1, characterized in that, The lower end face of the abutment ring (8) is in contact with the first sealing lip (9).

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