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Magneticfluid sealing device applied to electric push rod

A magnetic fluid sealing, electric push rod technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problem that the outside liquid cannot be effectively prevented from entering the push rod, the push rod actuator is difficult to seal, and the push rod circuit structure Damage and other problems, to achieve the effect of small installation volume, low power loss and no heat generation

Inactive Publication Date: 2016-08-24
上海舜拓电机有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at present, there is a common problem in push rod actuators, that is, the cylinder pair formed by the push rod and its support tube that performs straight-in and straight-out motion, due to the existence of a fit gap, it is difficult for push rod actuators to be effective. ground seal
[0003] Furthermore, especially in the working environment of rainwater or complete immersion in water, the seal at the gap of the kinematic pair cannot effectively prevent external liquid from entering the inside of the push rod, especially when the seal ring is aging, the leakage phenomenon is more serious
In addition, for the environment with high relative air humidity, humid air entering the inside of the push rod will also cause corrosion of the internal structure of the push rod, especially the damage to the push rod circuit structure

Method used

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  • Magneticfluid sealing device applied to electric push rod

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Embodiment Construction

[0025] The present invention provides a magnetic fluid sealing device applied to an electric push rod, including a positioning member 1, a dust-proof sealing ring 2, a first magnetically conductive pole piece 3, a non-magnetically conductive body 6, a second magnetically conductive pole piece 4, and a permanent magnet 5 The dust-proof sealing ring 2 is installed on the front part of the positioning member 1, and the permanent magnet 5 is installed side by side with the first magnetically conductive pole piece 3 and the second magnetically conductive pole piece 4 on the positioning The interior of part 1, the first magnetically conductive pole piece 3 and the second magnetically conductive pole piece 4 are separated by the non-magnetically conductive body 6; the first magnetically conductive pole piece 3 and the second magnetically conductive pole piece 4 The inner ring surface of each is provided with pole teeth and sealing ring grooves, wherein the pole teeth are filled with m...

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Abstract

The invention provides to a magneticfluid sealing device applied to an electric push rod. The magnetic fluid sealing device comprises a positioning piece, a dustproof sealing ring, a first magnetic conductive pole shoe, a non-conductive magnet, a second magnetic conductive pole shoe, and a permanent magnet, wherein the dustproof sealing ring is arranged at the front part of the positioning piece; the permanent magnet, the first magnetic conductive pole shoe and the second magnetic conductive pole shoe are arranged in the positioning piece in parallel; the first magnetic conductive pole shoe and the second magnetic conductive pole shoe are separated through the non-conductive magnet; pole teeth and sealing ring grooves are arranged / formed on / in the inner annular surface of the first magnetic conductive pole shoe and the inner annular surface of the second magnetic conductive pole shoe, and the pole teeth are filled with magnetic fluids. The magnetic fluid sealing device disclosed by the invention is mainly applied between a push rod and an outer sleeve to isolate water, air and pollution damaging factors, and effective waterproof and dustproof effects are achieved.

Description

technical field [0001] The invention relates to a sealing device, in particular to a magnetic fluid sealing device applied to an electric push rod. Background technique [0002] In the field of linear drive at this stage, electric push rods are widely used due to their unique advantages over pneumatic or hydraulic push rods. However, at present, there is a common problem in push rod actuators, that is, the cylinder pair formed by the push rod and its support tube that performs straight-in and straight-out motions, due to the existence of a fit gap, it is difficult for push rod actuators to be effective. sealed. [0003] Furthermore, especially in the working environment of rainwater or complete immersion in water, the seal at the gap of the kinematic pair cannot effectively prevent external liquid from entering the inside of the push rod, especially when the seal ring is aging, the leakage phenomenon is more serious. In addition, for an environment with high relative air h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/3232F16J15/16
CPCF16J15/3232F16J15/16
Inventor 贺斌
Owner 上海舜拓电机有限公司
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