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Bearing seal ring structure of magnetic fluid medium

A technology of magnetic fluid seal and bearing seal, which is applied in the field of bearing seal, can solve the problem of single sealing method, and achieve the effect of preventing entry into the raceway and fully lubricating

Active Publication Date: 2021-07-27
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current bearing sealing structure is mostly a skeleton oil seal, and the sealing method is single, such as relying on a rubber compound lip stroke labyrinth (patent application with publication number CN108591466A)

Method used

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  • Bearing seal ring structure of magnetic fluid medium
  • Bearing seal ring structure of magnetic fluid medium

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Embodiment Construction

[0023] The present invention will be further explained below in conjunction with the accompanying drawings.

[0024] Such as figure 1 As shown, a bearing sealing ring structure of a magnetic fluid medium of the present invention includes a metal outer skeleton 1, a metal inner sleeve 2, an annular magnet 3, a rubber compound lip 4, and a rubber sleeve 5; wherein:

[0025] The metal inner sleeve 2 is located inside the metal outer frame 1 .

[0026] The ring magnet 3 is press-fitted in the annular groove 8 on the metal outer frame 1; the bottom of the ring groove 8 of the metal outer frame 1 is provided with an exhaust hole 13, which is helpful to discharge air when the ring magnet is press-fitted. , and at the same time can be used as a disassembly hole. In this embodiment, there are four exhaust holes 13, and the four exhaust holes 13 are evenly arranged.

[0027] The rubber compound lip 4 is located between the metal outer frame 1 and the metal inner sleeve 2, and the coo...

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Abstract

The invention discloses a magnetic fluid medium bearing sealing ring structure, which comprises a metal outer frame, a metal inner sleeve, a ring magnet, a rubber compound lip, and a rubber sleeve; the metal inner sleeve is located inside the metal outer frame; In the annular groove opened on the metal outer frame; the rubber compound lip is located between the metal outer frame and the metal inner sleeve, the rubber compound lip is fixedly connected with the metal outer frame, the left end of the rubber compound lip is transitionally fitted with the metal inner sleeve, and filled with grease , the right end of the rubber compound lip is transitionally matched with the metal inner sleeve; the rubber sleeve is embedded in the trapezoidal ring groove on the bottom of the metal inner sleeve, and the trapezoidal ring groove acts as an axial fixation for the rubber sleeve; there is a gap between the rubber sleeve and the rubber compound lip A "eight"-shaped cavity is used as a magnetic fluid sealing chamber, and the magnetic fluid sealing chamber is filled with magnetic fluid. The invention uses magnetic fluid as an auxiliary seal on the basis of the rubber compound lip and the metal inner sleeve, which increases the reliability of the seal structure.

Description

technical field [0001] The invention relates to a bearing sealing ring structure of a magnetic fluid medium, belonging to the technical field of bearing sealing. Background technique [0002] With the rapid development of China's automobile industry, higher requirements are put forward for the performance of automobile hubs. The sealing of hub bearings prolongs the service life of hub bearings to a large extent. When the vehicle speed is fast, the temperature inside the raceway rises, and there is a risk of grease overflow; at the same time, it is necessary to prevent fine sand particles and rainwater from entering the raceway. Most of the current bearing sealing structures are skeleton oil seals, and the sealing method is single, such as relying on rubber compound lip stroke labyrinth (publication number is the patent application of CN108591466A). Contents of the invention [0003] In order to overcome the above-mentioned problems in the prior art, the object of the pres...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C33/78F16J15/3204F16J15/3268F16J15/324F16J15/3284F16J15/3256F16J15/43
CPCB60B27/0073F16C33/765F16C33/7806F16C33/7823F16C2326/02
Inventor 林棻张启鹏赵又群蔡亦璋
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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