CN109555590A - A kind of flat-face flange sealing gasket for automotive exhaust system - Google Patents
A kind of flat-face flange sealing gasket for automotive exhaust system Download PDFInfo
- Publication number
- CN109555590A CN109555590A CN201710887046.3A CN201710887046A CN109555590A CN 109555590 A CN109555590 A CN 109555590A CN 201710887046 A CN201710887046 A CN 201710887046A CN 109555590 A CN109555590 A CN 109555590A
- Authority
- CN
- China
- Prior art keywords
- bottom sheet
- flange
- gasket
- upper piece
- face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
- F01N13/1827—Sealings specially adapted for exhaust systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gasket Seals (AREA)
Abstract
A kind of flat-face flange sealing gasket for automotive exhaust system, the gasket seal include shape it is identical lay equal stress on it is folded be welded as a whole upper piece and bottom sheet, upper piece and bottom sheet among have and the consistent through-hole of exhaust fitting face-flange center hole size, boss is stamped with respectively around through-hole in the opposite one side of upper and bottom sheet, band is formed between face-flange by boss, further, gasket seal upper piece or the periphery of bottom sheet be evenly equipped with ratchet used for positioning.This gasket construction is simple, is skillfully constructed, and punching press boss guarantees sealed reliable, preferably adapts to increasingly strict emission regulation；Uniformly distributed pawl makes the gasket be easily assembled accurate positioning；The flexible materials such as graphite or the mica sheet of conventional spacers are saved using upper layer and lower layer structure, is simple to manufacture, is low in cost.
Description
Technical field
The present invention relates to automobile engine exhaust systems, and in particular to a kind of automobile exhaust system face-flange gasket
Piece.
Background technique
As automobile manufacture cost constantly rises, the regulations such as oil consumption, environmental protection are increasingly strict, how to reduce automobile manufacture at
How this, guarantee the sealing of exhaust system, meet environmental requirements, more and more paid attention to by people.Previous exhaust system
Flat-face flange sealing gasket has sealing less reliable, and assembly precision is low, and mostly uses three-decker, i.e., upper layer and lower layer are stainless
It is the flexible materials such as graphite or mica among steel disc, entire gasket seal manufacturing process is complicated, leads to gasket seal material, manufacture
Etc. higher costs the shortcomings that.
Summary of the invention
The purpose of the present invention is to provide a kind of flat-face flange sealing gasket for automotive exhaust system, its structure simple seal is skilful
Wonderful and reliable, precision height is accurately positioned in assembly, and material utilization amount saves, and gasket seal material and manufacturing cost are low.
A kind of flat-face flange sealing gasket for automotive exhaust system is used to be mounted on the exhaust fitting plane of exhaust system
Between flange.The gasket seal include shape it is identical lay equal stress on it is folded be welded as a whole upper piece and bottom sheet, upper piece and bottom sheet among
Have with the consistent through-hole of exhaust fitting face-flange center hole size, it is described upper piece and bottom sheet opposite one side it is all along through-hole
Enclose and be stamped with boss respectively, upper piece and bottom sheet it is opposite one side respectively with exhaust fitting face-flange cooperate, by the convex of surface
Platform forms band between face-flange, and at upper and lower on piece also rushes the pilot hole having on exhaust fitting face-flange
The corresponding pilot hole in position.The gasket uses the punch forming of upper layer and lower layer structure, saves the flexible materials such as intermediate graphitic mica,
The cost of material is low, and structure is simple.Previous product is mostly three-decker, and upper layer and lower layer are stainless steel plate, centre using graphite or
The flexible materials such as mica, three layers connection by gasket centre bore bound edge and three layers of pressure and try hard to keep card and to bound edge quality requirement compared with
Height, intermediate graphite linings will be ablated if the damage of bound edge position, leads to exhaust system gas leakage, premature failure.And by convex
Platform forms band between face-flange, and the sealing of exhaust system flange connections has been effectively ensured.
Further, gasket seal upper piece or bottom sheet periphery be evenly equipped at least three for and exhaust fitting plane
The ratchet of flange positioning improves assembly precision, guarantees the concentricity of gasket and flange for positioning with side face-flange.
Previous gasket seal is without pawl positioning function, the low concentricity that not can guarantee gasket seal and flange of precision after assembly,
Worker's hand-guided is leaned in assembly completely, and often dress causes exhaust system exhaust unsmooth partially, causes engine consumption high, gas leakage is serious
Etc. consequences, this gasket can be fully solved the above problem, and have effects that mistake proofing to the assembly of worker.
As it can be seen that not only structure is simple for this gasket, and it is skillfully constructed.Punching press boss guarantees sealed reliable, the row of efficiently solving
Discharge problem not up to standard, preferably adapts to increasingly strict emission regulation caused by gas system sealing is not tight；Uniformly distributed pawl makes this
Gasket is easily assembled accurate positioning；The flexible materials such as graphite or the mica sheet of conventional spacers are saved using upper layer and lower layer structure,
It is simple to manufacture, is low in cost.
Detailed description of the invention
Fig. 1 is front view of the invention；
Fig. 2 is rearview of the invention；
Fig. 3 is upper piece cross-sectional view of the invention；
Fig. 4 is the present invention and the schematic diagram after face-flange assembly.
Specific embodiment
The invention will be further described with reference to the accompanying drawing.
Referring to Fig. 1, Fig. 2, the flat-face flange sealing gasket for automotive exhaust system by upper piece 1 and bottom sheet 6 form,
Using 0.25mm stainless steel material, identical folded be welded as a whole of laying equal stress on of two plate shapes.Have among upper 1 and bottom sheet 6
With the consistent through-hole 4 of center hole size of exhaust fitting flange 7.Also rushing on the periphery of upper 1 and bottom sheet 6 has
Pilot hole 5 corresponding with the assembly hole site on exhaust fitting flange 7.Importantly, in upper 1 and bottom sheet 6
Opposite one side along 4 surrounding of through-hole be stamped with boss 2 respectively, upper piece 1 and bottom sheet 6 it is opposite on one side respectively with exhaust
Pipe coupling flange 7 cooperates, and forms band by the boss 2 on surface.In addition, equal in the periphery of upper 1 or bottom sheet 6
There are three the ratchets 3 for positioning with exhaust fitting flange 7 for cloth.
Referring to Fig. 3, gasket seal upper piece 1 the visible punching press of cross-sectional view boss 2 profile, gasket seal
The boss 2 of bottom sheet 6 is identical with this.
When manufacture first by gasket seal upper piece 1 and lower 6 punch forming of company, then will connect that spot welding is fixed to be connected up and down
It connects.
Referring to fig. 4, gasket seal is in entrucking, first by the planar process of the ratchet of gasket seal 3 and wherein side
Orchid 7 positions, and the face-flange 7 of the face-flange 7 of side and the other side is then connected with fastening, fixation finishes, close
The boss 2 of gasket two sides is contacted with the surface of face-flange, and band is collectively formed, and realizes the effect reliably sealed.
Claims (3)
1. flat-face flange sealing gasket for automotive exhaust system is used to be mounted on the exhaust fitting face-flange of exhaust system
(7) between；It is characterized by: the gasket seal include shape it is identical lay equal stress on folded upper piece (1) being welded as a whole and
Have and exhaust fitting face-flange (7) center hole size one among bottom sheet (6), upper piece (1) and bottom sheet (6)
The through-hole (4) of cause distinguishes punching press in the opposite one side of upper piece (1) and bottom sheet (6) along through-hole (4) around
There are boss (2), the opposite one side of upper piece (1) and bottom sheet (6) is matched with exhaust fitting face-flange (7) respectively
It closes, band is formed by the boss (2) on surface；It also rushes to have on upper (1) and bottom sheet (6) and be connect with exhaust pipe
The corresponding pilot hole in assembly hole site (5) on head plane flange (7).
2. the sealing gasket for automobile exhaust system according to claim 1, it is characterised in that gasket seal upper piece
(1) or the periphery of bottom sheet (6) is evenly equipped at least three pawls for positioning with exhaust fitting face-flange (7)
Piece (3).
3. according to claim 1 or sealing gasket for automobile exhaust system described in 2, it is characterised in that the gasket seal
Upper piece (1) and bottom sheet (6) are all made of 0.25mm stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710887046.3A CN109555590A (en) | 2017-09-27 | 2017-09-27 | A kind of flat-face flange sealing gasket for automotive exhaust system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710887046.3A CN109555590A (en) | 2017-09-27 | 2017-09-27 | A kind of flat-face flange sealing gasket for automotive exhaust system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109555590A true CN109555590A (en) | 2019-04-02 |
Family
ID=65863532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710887046.3A Pending CN109555590A (en) | 2017-09-27 | 2017-09-27 | A kind of flat-face flange sealing gasket for automotive exhaust system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109555590A (en) |
-
2017
- 2017-09-27 CN CN201710887046.3A patent/CN109555590A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190402 |
|
| WD01 | Invention patent application deemed withdrawn after publication |