Gasket
A gasket and ring-shaped bending technology, which is applied in the field of gaskets with sealing function, can solve the problems of cost and reduced sealing performance of gasket 210, and achieve the effect of improved sealing performance and low manufacturing cost
Inactive Publication Date: 2009-09-09
名川 政人 +1
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Problems solved by technology
If such a non-elastically deformed plastic deformation portion occurs on the gasket 210, there is a problem that the sealing performance of the gasket 210 will be reduced.
In addition, since the gasket 210 cannot be expected to have a large elastic deformation, in order to maintain the sealing performance, it is necessary to finish the contact surfaces of the gasket 210 and the flange 103 and the flange 104 into a mirror surface, and to finish the mirror surface. The problem of cost in processing
Method used
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Embodiment Construction
[0032] Hereinafter, embodiments of the present invention will be described in detail based on the drawings. Fig. 5 is a diagram showing a structural example of a gasket according to an embodiment of the present invention, Fig. 5(a) is a plan view, and Fig. 5(b) is a cross-sectional view taken along the line A-A. As shown in the figure, the structure of the spacer 10 is as follows: the outer peripheral side of the circular hole 11 on one surface (surface) of the plate body 27 formed by the elastic material with the circular hole 11 formed in the center is formed in a shape similar to the circular hole 11. A plurality of (two in the figure) first annular curved protrusions 12, 13 with an arc-shaped cross section, on the other surface (back side) corresponding to the first annular curved protrusions 12, 13 Form the annular curved recesses 14, 15 with arc-shaped cross-sections, on the outer peripheral side of the circular hole 11 on the other side (back surface) to be similar to t...
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The present invention provides a gasket that, when it is tightened from both sides by flanges etc., elastically deforms to produce reaction force acting against the tightening force, achieving improved sealing ability, and that is manufacturable at low cost by press working. One or more first annular curved ridges (12, 13) are formed on one side of a plate body (27) having a round hole (11) at its center and formed of an elastic material, and annular curved grooves (14, 15) are formed on the other side, at portions corresponding to the first annular curved ridges (12, 13). One or more second annular curved ridges (16) are formed on the other side, at positions not superposed on the first annular curved ridges (12, 13), and annular curved grooves (17) are formed on one side, at positions corresponding to the second annular curved ridges (16). Elastically deformable annular connection sections (18, 19) are formed between the first annular curved ridges (12, 13) and the second annular curved ridges (16).
Description
technical field [0001] The present invention relates to a gasket which is used in a connection between pipes and has a sealing function to prevent leakage of gas or liquid flowing in the pipe to the outside, or intrusion of gas or liquid into the pipe from the outside. Background technique [0002] To connect piping to piping, such as figure 1 As shown, a flange 103 and a flange 104 are provided on the respective ends of the pipe 101 and the pipe 102, and a gasket 105 is interposed between the flange 103 and the flange 104. By using bolts 106 and nuts 107, the The flange 103 is fastened to the flange 104 to connect the pipe 101 and the pipe 102 . The two sides of the gasket 105 are in close contact with the flanges 103 and 104 to act as a seal to prevent the gas or fluid in the pipes 101 and 102 from leaking to the outside or the gas or fluid from the outside from entering the pipes 101 and 102 . [0003] In the past, in this kind of gasket, because the gas or liquid passi...
Claims
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IPC IPC(8): F16J15/06
CPCF16L23/20F16J15/0818F16L23/22F16J2015/0868F16J2015/085F16J2015/0856F16J15/0887
Inventor 名川政人野田秀樹
Owner 名川 政人