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Hermetically sealed structure utilizing torsional vibration dampers and oil seals

A technology for sealing structures and shock absorbers, which is applied to springs/shock absorbers, engine seals, design features of springs/shock absorbers, etc., and can solve problems such as oil leakage, oil seal 110 sealing performance degradation, etc.

Active Publication Date: 2019-08-30
NOK CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the existing structure including the damper pulley 100 and the oil seal 110, the following situation sometimes occurs: foreign matter invades between the oil seal 110 and the raised portion 101a, and the sealing lip 111 bites into the foreign matter and damages or deteriorates, so that the sealing performance of the oil seal 110 drop, oil spill occurs

Method used

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  • Hermetically sealed structure utilizing torsional vibration dampers and oil seals
  • Hermetically sealed structure utilizing torsional vibration dampers and oil seals
  • Hermetically sealed structure utilizing torsional vibration dampers and oil seals

Examples

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Embodiment Construction

[0034] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0035] figure 1 It is a partial cross-sectional view of a cross-section along an axis for showing a schematic configuration of a seal structure using a torsional vibration damper and an oil seal according to an embodiment of the present invention. The sealing structure using a torsional vibration damper and an oil seal according to an embodiment of the present invention is suitable for an engine of an automobile. Hereinafter, for the convenience of description, the arrow a (refer to figure 1 ) direction is set to the outside, and the arrow b (refer to figure 1 ) direction is set to the inside. More specifically, the outer side refers to a direction away from the engine, and the inner side refers to a direction toward the engine, that is, the engine side. In addition, in the direction perpendicular to the axis x (hereinafter also referred to as "radial direction")...

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Abstract

The present invention provides a seal structure using a torsional vibration damper and an oil seal, which can suppress the exposure of the sealing lip of the oil seal to foreign matter intruding from the torsional vibration damper. A sealing structure (1) utilizing a torsional vibration damper and an oil seal includes a damping pulley (10) and an oil seal (20). The damping pulley (10) includes an annular convex portion (30) on the disc portion (16) of the wheel hub (11), and the convex portion (30) is on the window of the front cover (83) side as the mounted part. Between the part (16a) and the raised part (14) protrudes. The oil seal (20) includes a side lip (23) and a flange (40) extending outward. The side lip (23) extends to the inside of the annular groove (31) of the damping pulley (10) to form a gap (2), and the flange (40) covers the convex portion (30) of the damping pulley (10). The way is opposite to it and form gap (3) and gap (4).

Description

technical field [0001] The present invention relates to a sealing structure using a torsional damper and an oil seal, and more particularly to a torsional damper for absorbing torsional vibration generated in a shaft of an engine such as a vehicle, and a torsional damper for the torsional vibration. A sealed structure formed by the oil seal of the shock absorber. Background technique [0002] For example, in an engine of a vehicle, a torsional vibration damper is attached to one end of the crankshaft in order to reduce torsional vibration caused by rotational fluctuation of the crankshaft. Usually, this torsional vibration damper is used in the form of a damper pulley in the engine of a vehicle, and part of the power of the engine is transmitted to auxiliary equipment such as a water pump and an air conditioner compressor through a power transmission belt. . In addition, an oil seal seals the space between the torsional vibration damper and, for example, a through hole of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F15/126F16J15/3204F16J15/447
CPCF16F15/126F16J15/3204F16J15/447F16J15/3252F16F2230/24F16F2230/30F16H55/36F16H2055/366F16J15/3232
Inventor 光明晃宏松井宏树西出朋辉
Owner NOK CORP