CN1809693A - Laminated carrier gasket with off-set elastomeric sealing - Google Patents

Abstract

A gasket assembly is formed at least two carrier layers laminated together and formed with at least one opening through the carrier corresponding to openings across a parting plane of two members to be sealed. an elastomeric seal is molded to the carrier to define sealing beads on opposite sides of the carrier adjacent the opening with respective contact surfaces which engage the members to be scaled. The sealing contact surfaces are asymmetrically arranged contact surfaces are asymmetrically arranged relative to one another across the carrier to accommodate associated misalignment of the openings of the members to be sealed across the parting plane.

Description

Stratiform supporting bead with elastic packing of skew

It is 60/471,999 that the application requires application number, and the applying date is the preference of the U.S. Provisional Patent Application on May 20th, 2003.

Technical field

The present invention relates generally to the packing ring that is used for sealed open, especially relates to having the packing ring that is bonded to the elastic packing on the supporting member.

Background technique

Packing ring typically is used to seal two gripping memberss of connection, for example the fluid openings between intake manifold and the cylinder head around.The usual method that forms this packing ring is to utilize the rigid support plate of being made by metal or plastics, and this metal or plastics are formed with one or more and will be by the corresponding opening of one or more openings of washer sealing.Subsequently, seal weld with respect to the packing ring opening be cast to supporting member around so that sealing prevents the joint of escape of liquid.

In some applications, the opening that two component joints places can take place can not cooperate and/or may have the situation of different size well.Therefore, clamping under the load, uneven power is applied on seal weld and/or the supporting member, and this will impel them to damage prematurely, thereby causes the problem of guaranteeing to keep in good repair.

The purpose of this invention is to provide a kind of packing ring, it has overcome or has greatly reduced the above-mentioned narrow limitation of prior art middle washer.

Summary of the invention

The invention provides a kind of gasket assembly with laminated carrier, this laminated carrier is preferably made by metal layer or plate, and they form respectively and pile up subsequently and link together.When these layers are stacked and when linking together, each in this supporting course is formed with an opening of aiming at coaxially to each other, so that an opening that passes this packing ring is provided.At the radially outer of each opening, each layer is formed with a circular seal passage by inner radial wall and radial outer wall encirclement.This passage extends and passes corresponding layer to small part, like this, has an open communication between the passage of the passage of a layer and another layer.This passage disposes relative to each other asymmetricly, so that the inner circular wall of a passage can not aimed at along the axial direction of this supporting member opening with the inner radial wall of another passage near its whole circumference.Identical relation is present in outer wall radially.One elaxtic seal is cast in this passage, and this elaxtic seal merges into a single whole across this layer and the open communication zone by this passage.This elastic material has formed a seal weld in projection on a side of the laminated carrier on the axial external surface of a supporting course, the sealing weld seam is asymmetric with respect to being formed on the seal weld of projection on this laminated carrier opposite side of the axial external surface bottom of another supporting course.

This laminated carrier that is formed with asymmetric sealing channel and asymmetric seal weld makes opening that gasket assembly can be successfully used to member by in the application that is clamped across parting surface, and the packing ring itself that is installed in the parting surface is asymmetric.In order to adapt to the nonsymmetry that may occur across SEALING FITTING, this kind packing ring makes in the seal weld be trimmed the special seal needs that are clamped at a member on parting surface one side to satisfy, and another seal weld is trimmed to satisfy the specific needs of another clamped member.In this way, when the sealing assembly was in use clamped, it can not be subjected to the uneven or irregular load that the nonsymmetry because of clamped member causes, but is trimmed to adapt to this asymmetric.

Description of drawings

Fig. 1 is the planimetric map according to gasket assembly of the present invention;

Fig. 2 is the amplification profile diagram along the intercepting of the 2-2 line among Fig. 1;

Fig. 3 is the schematic representation of track of sealing curved contact face, this two surface of contact mutual superposition wherein, and show their nonsymmetry;

Fig. 4 is the imperfect sectional view along 4-4 line intercepting among Fig. 2;

Fig. 5 is the view similar in appearance to the interchangeable asymmetric configuration of Fig. 3;

Fig. 6 is the view similar in appearance to another interchangeable asymmetric configuration of Fig. 3.

Embodiment

In Fig. 1, the gasket assembly that current first preferred embodiment constitutes according to the present invention is indicated with 10 usually.It comprises by the made laminated carrier 12 of first supporting course 14 on second supporting course 16.Though the present invention considers that plastics, pottery and other material that is fit to are the suitable materials of making supporting course, supporting course 14,16 preferably is made of respectively metal.First supporting course 14 is formed with at least one opening and has shown two openings 18, they be formed on will be clamped first member 22 on opening 20 corresponding.The second layer 16 is formed with at least one opening and shows two openings 24, and they are corresponding with the opening 26 and second member 28.First member 22 can comprise, the intake manifold of internal-combustion engine for example, and second member 28 can comprise, the cylinder head of motor for example, wherein inlet manifold is installed to this cylinder head, like this, the separating layer or the parting surface of corresponding opening 20,26 cross members 22,28 are connected.The opening 20,26 of member 22,28 is asymmetric mutually about the sealing surfaces around these openings at least.Gasket assembly 10 in known manner for example bolt connect and to be clamped between the member 22,28, and be used for the joint of 20,26 of sealed opens, in case the fluid stopping body leaks.As more detailed description hereinafter, gasket assembly 10 is specifically designed to adapt to the member 22 across joint, 28 opening 20, asymmetrical relationship between 26, so that the sealing of high integrality is provided, sealing can adapt to by asymmetrical relationship and is applied to load on the packing ring, and does not damage the integrity of sealing or apply pressure to supporting member or make this supporting member fracture.

Fig. 2 shows better, and single supporting course 14,16 piles up mutually in the mode of lamination, and preferably in suitable mode, for example connects by rivet, weldment, tackiness agent, tensile connector or similar fashion.The opening 18,24 that is formed on the supporting member 14,16 is aimed at one heart about common axle A.Preferably, opening 18,24 has identical size, so that the wall of this two opening is aligned axially to each other about axle A.

At the radially outer of each opening 18,24, supporting course 14,16 is formed with a sealing channel 30,32 separately, and they are around the respective openings 18,24 of supporting course 14,16.Sealing channel 30,32 is asymmetric mutually, so that they are only partly overlapping each other across the separating surface between the supporting course 14,16 34.In other words, the sealing channel 30 of layer 14 is configured to have the profile and the orientation of the sealing channel 32 that is different from another layer 16, and on the contrary, passage 30,32 is asymmetric skew with respect to the asymmetric demand of the opening of first and second members 22,28.Therefore, when passage 30,32 partly disconnect when being communicated with across separating surface 34, the radial inner edge circle wall 36,37 of this passage 30,32 and external boundary wall 38,39 will can axially not aim at about they girths separately, like this, as shown in Figure 2, one in them will be offset radially outwardly or radially inwardly with respect to another.In current embodiment, the rounded separately or subcircular of sealing channel 30,32.Bottom sealing channel 32 is radially greater than top seal passage 30.In addition, the corresponding axis of this upper and lower passage 30,32 is offset, thereby has caused the nonsymmetry of another degree.This nonsymmetry is the reason of the demand of application-specific, in current example, and the radially different and skew of the upper and lower sealing surfaces of this application requirements black box.

After forming in the supporting course 14,16 of single sealing channel 30,32 in their each self-separations, and at layer 14,16 link together after, elaxtic seal 42 is cast in the sealing passage 30,32, so that in respective openings 18 around supporting member 12, form seal weld 44,46 on the opposite side of 24 supporting member 12, to be used to seal first and second members 22,28 the opening that is associated 20,26.Fig. 2 shows better, and the sealing material 42 that forms reverse seal weld 44,46 forms a molding, and this molding is across sealing channel 30,32 connections of independent supporting course 14,16.Fig. 2 shows better, the most external sealing contact surface 50,52 that seal weld 44,46 axially extends out to seal weld 44,46 from core 48 and their passage 30,32 places separately of sealing material 42 respectively.Seal weld 44,46 and their sealing channel 30,32 have identical pursuit path usually, and so sealing weld seam 44,46 with passage 30,32 equally be asymmetric, thereby along the whole track of seal weld, sealing contact surface 50,52 is not axially aimed on the opposite side of supporting member.This asymmetrical relationship makes seal weld 44,46 can adapt to the asymmetric opening 20,26 of first and second members 22,28, and therefore the sealing weld seam according to the asymmetric opening 20,26 of first and second members 22,28 need form.

Fig. 3 has described the track of the sealing contact surface 50,52 of relative seal weld 44,46, also further shows the asymmetrical relationship of sealing weld seam 44,46.As can be seen, lower seal weld seam 46 has bigger diameter than top seal weld seam 44, and their axle is offset.Specific asymmetrical relationship between the seal weld contact surface 50,52 will decide according to the asymmetrical relationship of the cooperation opening 20,26 of first and second members 22,28 that will the be sealed special needs by specific sealing applications.

As shown in Figure 2, each in the seal weld 44,46 has the profiled outline that is same to each other or different to each other.This specific profile can decide by the needs of specific sealing applications, and a kind of possibility has been represented in one of them description.Those of ordinary skills will be appreciated that the seal weld 44 of upper and lower, 46 asymmetrical relationship can similarly be applied in the seal weld that needs the needed any sectional configurations of specific seal weld, no matter and this profile be identical or different between seal weld.

The elastic material that is used for seal weld 44,46 can be any one in the present employed multiple organic polymer elastic material, or the material that is suitable for the special seal application of development in the future, and its middle washer 10 will be applied to sealing.Some such examples comprise rubber, NBR (nitrile rubber), or other elastomer.If existing, specific application needs, the present invention also considers two kinds of materials cast in together possibility, like this, and if desired, can make by the elastic material that is different from another seal weld for one in the sealing weld seam, to support different loads, pressure or other condition.

Fig. 4 shows the connection of supporting course across sealing channel.By at supporting course 14, introduce sealing channel 30 in 16,32, the inside annulus 54 of supporting material 12 radially is limited to the inside of sealing weld seam, rather than the bridging portion 58,60 that passes through supporting course 14,16 is connected to main supporting mass 56, wherein this supporting course 14,16 extends through the main body 48 of elastic packing 42.Bridging portion 58,60 is disconnected by open area 62,64 (Fig. 2), so that set up open communication for the sealing material 42 of a slice casting between the sealing channel of supporting course 14,16.

Fig. 5 and Fig. 6 show respectively black box 110 and 210 two exemplary alternative embodiments asymmetric contact surface 150,152,250,252 track respectively with seal weld 144,146,244,246 is reverse.The seal weld track of Fig. 5 is a seal weld 144,146, and 244,246 can have the example of same size and profile, but their axle be skew so that the sealing weld seam exists axial misalignment with corresponding misalignment in the member that will be measured of compensation.It is circular and another track is non-circular example that the track of Fig. 6 shows a track.Certainly, those of ordinary skills can recognize that the countless multiple combination of in fact asymmetric seal weld also is possible, the influence that this is required by application-specific.Therefore, the foregoing description only is the example of multiple other asymmetric bead arrangements, and this is that the present invention considers.

Be appreciated that the other embodiments of the invention that can realize identical function, here be incorporated in the scope of Patent right requirement of final permission.

Claims (15)

1. gasket assembly comprises:

First supporting course;

Second supporting course;

Described first and second supporting courses are formed respectively;

Described first and second supporting courses by lamination so that limit a stratiform supporting member;

At least one aims at opening, and it is formed in the described supporting member;

Elastic packing, it is formed on the described supporting member, and it has first seal weld that centers on the described opening on described supporting member one side and second seal weld that centers on the described opening on the described supporting member opposite side;

Described seal weld defines the axially outside isolated sealing contact surface separately of described supporting member opposite side-edge; And

Described sealing contact surface is asymmetric mutually.

2. assembly as claimed in claim 1, wherein said supporting member comprise that the outside sealing channel and the described sealing of described opening at interval is formed in the sealing passage.

3. assembly as claimed in claim 2, wherein said sealing channel pass completely through described supporting course at least in part and extend.

4. assembly as claimed in claim 3, wherein said sealing pass completely through the described opposite side of described sealing channel extension until described supporting member.

5. assembly as claimed in claim 4, wherein said sealing channel comprise the sealing channel part that is formed in each described supporting course, and described sealing channel partly communicates with each other, but is arranged asymmetrical relative to one anotherly.

6. assembly as claimed in claim 5, wherein sealing channel partly has a track, and this track track with the seal weld of corresponding sealing channel partial correlation connection basically is identical.

7. assembly as claimed in claim 1, wherein at least one sealing contact surface disposes prejudicially with respect to the described opening in the described supporting member.

8. as the described assembly of this claim 3, wherein said sealing is formed on as a continuous part between the described seal weld on the described opposite side of described supporting member.

9. assembly as claimed in claim 3, wherein said sealing channel is disconnected by a plurality of bridging portions.

10. assembly as claimed in claim 1, the described seal weld on wherein said supporting member one side is arranged prejudicially with respect to the described seal weld on the opposite side of described supporting member.

11. as the assembly in the claim 1, the described seal weld on wherein said supporting member one side has a circumferential track, this circumferential track is different from the circumferential track of the track of the described seal weld on the described supporting member opposite side.

12. assembly as claimed in claim 1, described seal weld on wherein said supporting member one side and the described seal weld on the described supporting member opposite side have non-mirror.

13. one kind forms sealing with the method for sealing connection across the opening between the member of this parting surface between across two members of parting surface, wherein the opening that is communicated with between described member disposes asymmetrical relative to one anotherly, and this method comprises:

Prepare a gasket assembly, this gasket assembly has at least two linking together so that limit the supporting course of a stratiform supporting member of forming respectively, this laminated carrier has at least one opening that runs through, and its position is corresponding with the position of the opening of member that will be sealed across parting surface

One elastic packing is cast to this laminated carrier, so that the opening around this laminated carrier on the opposite side of laminated carrier limits seal weld, the sealing weld seam axially stretches out along the opposite side of this laminated carrier, so that limit relative seal weld surface of contact;

Wherein sealing weld seam surface of contact according to across parting surface will be sealed the asymmetrical relationship of opening of member form with relation asymmetrical relative to one another.

14, method as claimed in claim 13 comprises that the opening that is adjacent in the supporting member passes supporting member and forms a sealing channel, and sealing is cast in this passage.

15, method as claimed in claim 14 comprises that supporting member is formed with the bridging portion that strides across this passage extension.

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