Low-torque magnetic combined oil seal

Abstract

The utility model discloses a low-torque magnetic combined oil seal which comprises a first framework and a second framework, a first rubber body is fixed on the first framework in a vulcanization mode, and a second rubber body is fixed on the second framework in a vulcanization mode. The first rubber body is provided with a first static sealing protruding point, a grease lip and a muddy water lip, the first static sealing protruding point is arranged at the position close to one end of the first framework, the grease lip and the muddy water lip are arranged at the position close to the other end of the first framework and are obliquely arranged, the size of the grease lip is gradually reduced from the connecting end to the outside, and the size of the muddy water lip is gradually reduced from the connecting end to the inside. And the size of the muddy water lip is gradually increased outwards from the connecting end.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil seals and relates to a low-torque magnetic combined oil seal. Background Art

[0002] An oil seal is a common term for a general seal, which simply means the seal of lubricating oil. It is a mechanical component used to seal grease. It isolates the components that need lubrication in the transmission components from the output components to prevent the leakage of lubricating oil. The seals used for static and dynamic seals are called oil seals. Existing oil seals cannot achieve both low torque and ensure sealing performance at the same time. Therefore, it is necessary to design a low-torque magnetic combined oil seal to solve the above problems. Summary of the Invention

[0003] The purpose of the utility model is to provide a low-torque magnetic combined oil seal for the existing technologies with the above problems.

[0004] To achieve the above purpose, the technical solution of the utility model is: a low-torque magnetic combined oil seal, including a first skeleton and a second skeleton. A first rubber body is fixed on the first skeleton by vulcanization, and a second rubber body is fixed on the second skeleton by vulcanization. It is characterized in that the first rubber body has a static seal bump one, an oil lip and a muddy water lip. The static seal bump one is arranged at one end close to the first skeleton, and the oil lip and the muddy water lip are arranged at the other end close to the first skeleton. Both the oil lip and the muddy water lip are inclined. The size of the oil lip gradually decreases from the connecting end outwards, while the size of the muddy water lip gradually increases from the connecting end outwards.

[0005] The oil lip is a lightly-connected lip.

[0006] The muddy water lip is an elastic lip.

[0007] The second rubber body is a magnetic rubber body.

[0008] The second rubber body has a static seal bump two, which is arranged at the middle end close to the second skeleton.

[0009] The shapes of the first skeleton and the second skeleton are both L-shaped. One end of the first skeleton has a notch part that cooperates with the static seal bump one, and the other end of the first skeleton has a bending part that cooperates with the muddy water lip.

[0010] By adopting the above technical solution, the beneficial effect of the utility model is:

[0011] In the present utility model, the muddy water lip is an elastic lip, which reduces the torque generated by the contact of this lip while ensuring the muddy water performance; the grease lip is a lightly contacting lip, which further reduces the torque; the static sealing bump two and the static sealing bump together are static sealing points, greatly increasing the waterproof performance, so as to ensure the sealing performance while reducing the torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural view of the present utility model.

[0013] In the figure, 1 is the first skeleton; 1a is the notch part; 1b is the bent part; 2 is the first rubber body; 2a is the first static sealing bump; 2b is the grease lip; 2c is the muddy water lip; 3 is the second skeleton; 4 is the second rubber body; 4a is the second static sealing bump. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] In order to further explain the technical solution of the present utility model, the present utility model will be elaborated in detail below through specific embodiments.

[0015] As Figure 1 shown, the present low-torque magnetic combined oil seal includes a first skeleton 1 and a second skeleton 3. A first rubber body 2 is fixed on the first skeleton 1 by vulcanization, and a second rubber body 4 is fixed on the second skeleton 3 by vulcanization. The first rubber body 2 has a first static sealing bump 2a, a grease lip 2b and a muddy water lip 2c. The first static sealing bump 2a is arranged at one end close to the first skeleton 1, and the function of the first static sealing bump 2a is to strengthen the seal and prevent muddy water from invading; the grease lip 2b and the muddy water lip 2c are arranged at the other end close to the first skeleton 1. Both the grease lip 2b and the muddy water lip 2c are inclined. The size of the grease lip 2b gradually decreases from the connecting end to the outside, while the size of the muddy water lip 2c gradually increases from the connecting end to the outside.

[0016] The grease lip 2b is a lightly contacting lip, which can prevent the grease inside the bearing from leaking.

[0017] The muddy water lip 2c is an elastic lip, and has an interference fit with the second skeleton 3 to prevent muddy water from invading.

[0018] The second rubber body 4 is a magnetic rubber body. The magnetic rubber body is vulcanized and connected to the second skeleton 3 by the prior art, and after magnetization, it has a magnetic function, which is realized by the prior art.

[0019] The second rubber body 4 has a second static sealing bump 4a. The second static sealing bump 4a is arranged at the middle end close to the second skeleton 3. The second static sealing bump 4a adopts an interference fit to prevent muddy water from invading.

[0020] The shapes of the first skeleton 1 and the second skeleton 3 are both L-shaped. One end of the first skeleton 1 has a notch portion 1a that mates with the first static seal bump 2a, and the other end of the first skeleton 1 has a bent portion 1b that mates with the mud lip 2c.

[0021] In the present utility model, the mud lip 2c is an elastic lip, which reduces the torque generated by the contact of this lip while ensuring the mud performance; the grease lip 2b is a light-contact lip, which further reduces the torque; the second static seal bump 4a and the first static seal bump 2a are both static seal points, greatly increasing the waterproof performance, so that the sealing performance can be ensured while reducing the torque.

[0022] The above components are all common standard components or components known to those skilled in the art. Their structures and principles can all be known by those skilled in the art through technical manuals or obtained through conventional experimental methods.

[0023] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by those of ordinary skill in the art shall be regarded as not departing from the patent scope of the present utility model.

Claims

1. Low-torque magnetic combined oil seal, comprising a first skeleton (1) and a second skeleton (3), a first rubber body (2) is fixed on the first skeleton (1) by vulcanization, and a second rubber body (4) is fixed on the second skeleton (3) by vulcanization, characterized in that, The first rubber body (2) is provided with a first static sealing bump (2a), a grease lip (2b) and a muddy water lip (2c). The first static sealing bump (2a) is arranged at one end close to the first skeleton (1), and the grease lip (2b) and the muddy water lip (2c) are arranged at the other end close to the first skeleton (1). The grease lip (2b) and the muddy water lip (2c) are both inclined. The size of the grease lip (2b) gradually decreases from the connecting end outwards, while the size of the muddy water lip (2c) gradually increases from the connecting end outwards.

2. The low-torque magnetic combined oil seal according to claim 1, wherein The grease lip (2b) is a lightly contacting lip.

3. The low-torque magnetic combined oil seal according to claim 2, characterized in that, The muddy water lip (2c) is an elastic lip.

4. A low-torque magnetic combined oil seal according to claim 1, characterized in that, The second rubber body (4) is a magnetic rubber body.

5. The low-torque magnetic combined oil seal according to claim 4, wherein The second rubber body (4) is provided with a second static sealing bump (4a), and the second static sealing bump (4a) is arranged at the middle end close to the second skeleton (3).

6. The low-torque magnetic combined oil seal according to claim 1, characterized in that, The shapes of the first skeleton (1) and the second skeleton (3) are both L-shaped. One end of the first skeleton (1) has a notch part (1a) that cooperates with the first static sealing bump (2a), and the other end of the first skeleton (1) has a bent part (1b) that cooperates with the muddy water lip (2c).

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