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Sealing structure for fitting section

A technology of sealing structure and fitting part, which is applied to the sealing of engines, vehicle components, bearings of rotating motion, etc., can solve the problem of uncertain sealing performance, and achieve the effect of excellent sealing performance

Inactive Publication Date: 2012-05-23
UCHIYAMA MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is explained that the second sealing layer sandwiched between the cylindrical portion of the oil slinger and the inner ring will not be in a compressed state, so how well the sealing performance of the fitting portion of the oil slinger and the inner ring is exerted not sure

Method used

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  • Sealing structure for fitting section
  • Sealing structure for fitting section
  • Sealing structure for fitting section

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0047] ready to be image 3 The metallic oil slinger 14 and the inner ring member 6 having the fitting relationship as shown are discharged from the distributor to the corner 14c of the lobes of the oil slinger 14, coated with a liquid hardening type silicone elastomer, and sintered at 150°C. After hardening for 10 minutes, an annular closed portion 14d with a layer thickness d of 0.02-0.10 mm (0.04 mm as the center) is formed. Also, make the flinger 14 with image 3 The inner ring member 6 is fitted in the state shown. The fitting interference (radius value) at this time is 0.02 to 0.15 mm. In addition, the fitting portion of the inner ring member 6 was scratched to a depth of 0.02 mm in the axial direction, and the flinger 14 was similarly fitted. An air leak test was carried out on the fitting structures of the undamaged fitting portion and the wound fitting portion under a pressurized environment, and there was no air leakage even when pressurized to an internal pressur...

experiment example 2

[0052] The above-mentioned elastomer agents of various viscosities were prepared, applied onto test pieces from a dispenser, and cured, and evaluation tests were performed on the moldability of the ring-shaped closed portion during the curing process. Figure 15 It is a figure which put the result of the evaluation test together in the table|surface. Figure 15 In the evaluation of formability, it is visually judged whether the elastomer agent is applied in the state where the test piece is erected, and whether the elastomer agent flows. In addition, the coating performed by the dispenser is stopped, and the nozzle is sprayed from the coated part. When leaving, whether the elastomer agent has a stringing phenomenon is carried out. In the column of formability evaluation, × indicates that the above-mentioned flow and stringing phenomenon occurred, and the annular closed portion has an uneven shape to the extent that the sealing property is affected. ○ indicates that although a...

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Abstract

A sealing structure for a fitting portion where an annular member is concentrically fitted to a cylindrical member to be fitted at a cylindrical part of the annular member is disclosed. The sealing structure is characterized by an elastic annular seal layer integrally provided on the backward end part of the annular member or the cylindrical member in fitting direction, by applying elastomeric agent to the backward end part and hardening it, and the elastic annular seal layer is formed such that it has layer thickness of 5 [mu]m to 1 mm and is interposed in a compressed state between the annular member and the cylindrical member when the annular member is fitted to the cylindrical member.

Description

technical field [0001] The present invention relates to a sealing structure of a fitting portion, for example, relates to a sealing structure of a fitting portion of an oil slinger constituting an oil seal in a bearing device and a rotating side member. Background technique [0002] For example, an oil seal (bearing seal) is incorporated into a bearing device for an automobile so that the above-mentioned circle in an oil slinger having an L-shaped cross-section having a cylindrical portion and a flange portion connected to one end thereof is incorporated into an automobile bearing device. The cylindrical portion is fitted into the rotating side member (inner ring member or drive shaft, etc.) from the other end, and the closing lip of the closing lip member fitted on the fixed side member (outer ring member) through the center rod elastically contacts with the above-mentioned circle. The surface of the tubular portion on the opposite side to the fitting portion and the single...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/14F16J15/06F16J15/32F16C19/18F16C33/72F16C33/76F16C33/78F16C41/00F16J15/3232F16J15/326F16J15/3276
CPCF16C2326/02F16J15/3276F16J15/14F16C33/768F16C33/7879F16C41/007F16C33/7886F16J15/3264F16C33/723F16C19/184F16C19/186F16C33/783
Inventor 山本博德柴山昌范清照幸
Owner UCHIYAMA MFG
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