Check patentability & draft patents in minutes with Patsnap Eureka AI!

Sealing structure

A technology of sealing structure and cylindrical part, which is applied in the direction of engine sealing, mechanical equipment, vibration suppression adjustment, etc., can solve the problems of reduction, cost impact, weight increase of the main body part 620 of the torsional vibration damper 600, etc.

Active Publication Date: 2017-08-01
NOK CORP
View PDF10 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the weight of the main body portion 620 of the torsional vibration damper 600 is increased.
In addition, the main body 620 is usually a casting, and the annular groove 621 must be processed by cutting, which affects cost reduction.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Sealing structure
  • Sealing structure
  • Sealing structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] Hereinafter, referring to the drawings, embodiments for implementing the present invention will be described in detail based on examples. However, the dimensions, materials, shapes, relative arrangements, and the like of the constituent elements described in the embodiments are not limited to the scope of the present invention unless otherwise specified.

[0041] (Example)

[0042] refer to figure 1 with figure 2 , the sealing structure of the embodiment of the present invention will be described. figure 1 It is a schematic cross-sectional view of the seal structure according to the embodiment of the present invention, and is a cross-sectional view cut along a plane including the central axis of the crankshaft. In addition, in figure 1 In , the torsional vibration damper is simply shown. figure 2 It is a schematic cross-sectional view of an oil seal according to an embodiment of the present invention, and is a cross-sectional view cut along a plane including a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Provided is a sealing structure in which a side lip can be provided even when an inward flange section of a reinforcing ring is short, and a labyrinth structure can be disposed between an oil seal and a torsional vibration damper. This sealing structure is characterized in that: a seal body 120 is provided with a side lip 124 which extends up to a position which does not contact the outer circumferential surface of a cylindrical part 210 from the vicinity of the front end of the inward flange section 112 of the reinforcing ring 110, inward in the radial direction and toward an atmosphere side (A) further than a dust lip 122; and the cylindrical part 210 is provided with a small-diameter section 211 on which the dust lip 122 slides, and a large-diameter section 212 at the atmosphere side (A), wherein a tapered surface 212a having a diameter that decreases toward the atmosphere side (A) is formed on the outer circumferential surface of the large-diameter section 212, and an annular gap S is formed between the tapered surface 212a and the inner circumferential surface of the side lip 124.

Description

technical field [0001] The present invention relates to a sealing structure provided with a torsional vibration damper. Background technique [0002] Conventionally, in a sealing structure including a torsional vibration damper and an oil seal, there is known a technique of providing a labyrinth structure in order to suppress the intrusion of foreign matter from the outside. refer to image 3 , for an example. image 3 is a schematic cross-sectional view of a prior art sealing structure. [0003] As shown in the figure, the torsional vibration damper 600 has a cylindrical portion 610 attached to the crankshaft 300 . In addition, the oil seal 500 includes a reinforcement ring 510 and an elastic seal main body 520 integrated with the reinforcement ring 510 . Further, the reinforcement ring 510 has a cylindrical portion 511 and an inward flange portion 512 provided at the end portion of the cylindrical portion 511 on the side opposite to the sealing target fluid side. In add...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/3204F16F15/126F16J15/447
CPCF16J15/164F16J15/3232F16J15/3264F16F2230/30F16F15/1442F16J15/126F16J15/3204F16J15/447F16F15/126
Inventor 尾本真哉中岛徹松井宏树纸谷祐辅
Owner NOK CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com