Rotary shaft oil seal with D-ring attached to outer diameter

Abstract

The utility model relates to a rotary shaft oil seal with D-shaped ring attached to the outer diameter, belonging to the technical field of oil seal. Including rubber, skeleton and spring, the rubber covers the outside of skeleton, the spring sets up in the lip portion of rubber, integrative setting D-shaped ring at the outer diameter of rubber, D-shaped ring is used for sealing the gap between two workpieces. The utility model carries out static sealing between two workpieces through D-shaped ring, avoids the risk of extruding rubber when pressing in the gap between two workpieces at the outer diameter, the utility model can be applied under complex working conditions due to the unique structure, can avoid oil leakage when the oil seal body seals the rotary shaft, and the D-shaped ring attached to the outer diameter can effectively solve the problem of leakage due to the sealing between two workpieces, the overall sealing effect is better when facing complex working conditions, and there is no oil leakage problem.

Description

Technical Field

[0001] This utility model belongs to the field of oil seal technology, specifically relating to a rotary shaft oil seal with a D-ring attached to its outer diameter. Background Technology

[0002] The sealing effect, stability, and service life of rotary shaft oil seals are very important. The original rotary shaft oil seals achieved sealing at the outer diameter by pressing into the integral mounting hole. However, in complex working conditions, such as when two workpieces need to be sealed with a gap between them and the rotary shaft, there will be a gap outer diameter between the two workpieces. This gap outer diameter can easily cause the rotary shaft oil seal to be squeezed out during pressing, which will eventually lead to oil leakage when the rotary shaft oil seal is used under complex working conditions. Summary of the Invention

[0003] In order to solve the problem of poor sealing of rotary shaft oil seals under complex working conditions, this utility model provides a rotary shaft oil seal with a D-ring attached to its outer diameter.

[0004] The technical solution adopted by this utility model is: A rotary shaft oil seal with a D-ring attached to its outer diameter includes rubber, a skeleton, and a spring; the rubber covers the outside of the skeleton, and the spring is disposed at the lip of the rubber; a D-ring is integrally disposed at the outer diameter of the rubber, and the D-ring is used to seal the gap between two workpieces.

[0005] Furthermore, the rotary shaft oil seal with the D-ring attached to its outer diameter also includes a sealing plate; one end of the sealing plate is connected to the rubber, and the other end abuts against the rotary shaft. The sealing plate and the lip of the rubber cooperate to provide a double-layer seal between the workpiece and the rotary shaft.

[0006] Furthermore, the sealing plate is made of waterproof felt.

[0007] Furthermore, the skeleton is divided into two parts, a first L-shaped part and a second L-shaped part; the outer sides of the first L-shaped part and the second L-shaped part are both covered with rubber, the second L-shaped part is located below the first L-shaped part, one end of the first L-shaped part and the second L-shaped part are horizontally positioned between the rotating shaft and the workpiece, the other ends of the first L-shaped part and the second L-shaped part are adjacent to each other and connected by the rubber covering the outer side of the second L-shaped part.

[0008] Furthermore, the skeleton is made of ST12.

[0009] Compared with the prior art, the present invention has the following advantages: This invention uses a D-ring to achieve a static seal between two workpieces, avoiding the risk of adhesive extrusion when pressing in at the outer diameter of the gap between the two workpieces. Due to its unique structure, this invention can be applied to complex working conditions. When the oil seal body performs rotary shaft sealing, it can prevent oil leakage. Furthermore, the D-ring attached to the outer diameter can effectively solve the problem of leakage due to poor sealing between two workpieces. The overall sealing effect is better when facing complex working conditions, and there will be no oil leakage problem. Attached Figure Description

[0010] Figure 1 This is a side sectional view of the present invention; Among them: 1. Rubber; 101. D-ring; 102. Lip; 2. Skeleton; 201. First L-shaped part; 202. Second L-shaped part; 3. Spring; 4. Sealing plate; 5. Rotating shaft; 6. Workpiece. Detailed Implementation

[0011] To better understand the purpose, structure, and function of this utility model, a more detailed description of this utility model will be provided below with reference to the accompanying drawings.

[0012] like Figure 1 As shown, this utility model provides a rotary shaft oil seal with an attached D-ring on the outer diameter, including a rubber 1, a skeleton 2, and a spring 3; the rubber 1 covers the outside of the skeleton 2, and the spring 3 is disposed at the lip 102 of the rubber 1; a D-ring 101 is integrally disposed at the outer diameter of the rubber 1, and the D-ring 101 is used to seal the gap between two workpieces 6.

[0013] The rotary shaft oil seal with the D-ring attached to the outer diameter also includes a sealing plate 4; one end of the sealing plate 4 is connected to the rubber 1, and the other end abuts against the rotary shaft 5. The sealing plate 4 and the lip 102 of the rubber 1 are matched to double seal the gap between the workpiece 6 and the rotary shaft 5.

[0014] The sealing plate 4 is made of waterproof felt.

[0015] The frame 2 is divided into two parts: a first L-shaped part 201 and a second L-shaped part 202. Both the first L-shaped part 201 and the second L-shaped part 202 are covered with rubber 1 on their outer sides. The second L-shaped part 202 is positioned below the first L-shaped part 201. One end of both the first L-shaped part 201 and the second L-shaped part 202 is horizontally positioned between the rotating shaft 5 and the workpiece 6. The other ends of the first L-shaped part 201 and the second L-shaped part 202 are adjacent to each other and connected by the rubber 1 covering the outer side of the second L-shaped part 202. This design provides better overall structural strength and can withstand complex working conditions such as high pressure, dust, and large temperature differences.

[0016] The skeleton 2 is made of ST12.

[0017] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A rotary shaft oil seal with a D-ring attached to its outer diameter, characterized in that: It includes a rubber (1), a skeleton (2) and a spring (3); the rubber (1) covers the outside of the skeleton (2), and the spring (3) is disposed at the lip (102) of the rubber (1); a D-ring (101) is integrally disposed at the outer diameter of the rubber (1), and the D-ring (101) is used to seal the gap between two workpieces (6).

2. The rotary shaft oil seal with an attached D-ring on its outer diameter according to claim 1, characterized in that: The rotary shaft oil seal with the D-ring attached to the outer diameter also includes a sealing plate (4); one end of the sealing plate (4) is connected to the rubber (1), and the other end abuts against the rotary shaft (5). The sealing plate (4) and the lip (102) of the rubber (1) cooperate to double seal the gap between the workpiece (6) and the rotary shaft (5).

3. A rotary shaft oil seal with an attached D-ring on its outer diameter according to claim 2, characterized in that: The sealing plate (4) is made of waterproof felt.

4. A rotary shaft oil seal with an attached D-ring on its outer diameter according to claim 1, characterized in that: The skeleton (2) is divided into two parts, a first L-shaped part (201) and a second L-shaped part (202); the outer sides of the first L-shaped part (201) and the second L-shaped part (202) are covered with rubber (1), the second L-shaped part (202) is located below the first L-shaped part (201), the first L-shaped part (201) and the second L-shaped part (202) are both horizontally positioned at one end between the rotating shaft (5) and the workpiece (6), the other ends of the first L-shaped part (201) and the second L-shaped part (202) are adjacent to each other and are connected by the rubber (1) covering the outer side of the second L-shaped part (202).

5. A rotary shaft oil seal with an attached D-ring on its outer diameter according to claim 4, characterized in that: The skeleton (2) is made of ST12.

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