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Sealing device

A technology of sealing device and sealing lip, which is applied in the direction of cable entry sealing device, engine sealing, pipe, etc.

Inactive Publication Date: 2009-12-30
NOK CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the above Figure 12 The sealing device 51 shown is not a structure for sealing two spark plug barrels inserted simultaneously

Method used

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  • Sealing device
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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0055] Figure 1~Figure 9 This shows the sealing device 1 according to the first embodiment of the present invention. which is, figure 1 It is a perspective view of the sealing device 1. figure 2 This is the front view of the sealing device. image 3 It is a side view of the sealing device. Figure 4 It is a plan view of the sealing device. Figure 5 It is a bottom view of the sealing device. Figure 6 Yes image 3 A cross-sectional view of line A-A in the middle. Figure 7 Yes figure 2 Sectional view of line B-B in the middle. Figure 8 It is a single part drawing of the metal ring 8 of the sealing device 1. Picture 9 It shows the installation state of the sealing device 1.

[0056] In order to improve the cylinder head 2 ( Picture 9 ) And spark plug barrel 3 ( Picture 9 ), the sealing device (spark plug barrel gasket) 1 of this embodiment is assembled on the periphery of the opening 2a of the cylinder head 2, and is in close contact with the outer peripheral surface 3a of th...

no. 2 example

[0069] In the above-mentioned first embodiment, the sealing bellows 10 is provided on the outer peripheral surface of the mounting portion 4 to improve the sealing performance between it and the cylinder head 2, but instead of this structure, it can also be as Picture 10 As shown, a rubber-like elastic body is sintered and bonded to the lower end surface of the flange portion 8b of the metal ring 8, and the sealing bellows portion 10 is integrally formed on the elastic body. At this time, the sealing bellows portion 10 is set downward, and is in close contact with the stepped portion 2b on the inner surface of the opening portion 2a during installation.

no. 4 example

[0071] In the above-mentioned first embodiment, the following deformation part 7 and the sealing lip 6 are integrally formed on the lower side of the mounting part 4 as a downward cylindrical production part, but this structure can also be substituted, such as Picture 11 As shown in (A) or (B), the sealing lip 6 is made into an oil seal type.

[0072] in Picture 11 In the example of (A), an oil-sealed sealing lip 6 is integrally formed on the inner peripheral side of the mounting portion 4 as an upwardly facing member through the bellows-shaped following deformation portion 7. On the outer peripheral surface of the rubber-like elastic body constituting the mounting portion 4, an outer peripheral sealing portion 12 that is in close contact with the inner surface of the opening 2a of the cylinder head 2 is integrally formed around the circumference, and between the mounting portion 4 and the following deformation portion 7 is provided The gap portion 13 connected to the gap portio...

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PUM

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Abstract

A sealing device having a function in which tubular members such as plug tubes etc. are inserted side-by-side in the device and they can be sealed. The sealing device (1) is assembled into an opening (2a) of a housing (2) and seals gaps between the housing (2) and the tubular members (3) inserted in the opening (2a). The sealing device (1) integrally has an installation section (4) fixed to the housing (2), seal lips (6) in tight contact with outer peripheral surfaces (3a) of the tubular members (3), and following deformation sections (7) each provided between the installation section (4) and the seal lips (6). The installation section (4) has, in a plane, tubular inner surfaces (5) into which the tubular members (3) are inserted. Further, the seal lips (6) and the following deformation sections (7) are provided in plural number so as to be correspondent to the tubular inner surfaces (5).

Description

Technical field [0001] The invention relates to a sealing device related to sealing technology. The sealing device of the present invention is applied to automobiles, construction machinery, agricultural machinery or other general production machinery. For example, in the automobile-related field, it is used to seal between the cylinder head and spark plug barrel or between the cylinder head and the injection pipe in the internal combustion engine. Background technique [0002] All the time, such as Picture 12 As shown, it is assembled on the opening 51a of the casing (cylinder head in the figure) 51, between the casing 51 and the cylindrical member (fuel injection pipe in the figure) 52 inserted into the opening 51a of the casing 51 The sealing device 53 for sealing is well known. The sealing device 53 is integrally formed with an attachment portion 54 fixed to the housing 51 and a sealing lip 55 in close contact with the outer peripheral surface of the cylindrical member 52 (r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/10
CPCF16L5/10F16L5/14H02G15/013
Inventor 塚本浩司
Owner NOK CORP