CN85105242B

CN85105242B - Mechanical lock joint for joining tubular products

Info

Publication number: CN85105242B
Application number: CN85105242A
Authority: CN
Inventors: 奥蒂尔·乔治·M
Original assignee: Maremont Corp
Current assignee: Maremont Corp
Priority date: 1985-07-09
Filing date: 1985-07-09
Publication date: 1987-06-24
Also published as: CN85105242A

Abstract

In a muffler of an exhaust system of a vehicle, two sleeves sheathed together are jointed with an inner plate by a completely mechanical connecting piece, two hoops axially divided extend around pipes, the hoops, the pipes and a circular disk are integral and extend outwards in a radial direction, and the annular flange of the plate extends along an outer pipe; a plurality of integral bulges connected with each other are simultaneously formed in the outer pipe and the flange; the hoops, the flange and the bulges are completely and mechanically connected with the pipes and the inner plate.

Description

Vehicle exhaust baffler inner tube plate mechanical connection locking mechanism

The present invention relates to the vehicle exhaust system baffler, particularly the link of baffler inner member.

When producing the vehicle exhaust system baffler, usually adopt Site Welding, from U. S. Patent NO.2,367753; 3,559903 and 3,608667 can see that this has not thought best interconnection technique for a long time.This is because there is various reason to exist.At first, the link of Site Welding may be difficult to check; The second, Site Welding may thoroughly change the structure of the connected element of link in the link that welds at the scene and the vicinity Site Welding; The 3rd, Site Welding may destroy the continuity of protective layer on connected element; The 4th, material deformation when welding, the connected element center may change; The 5th, Site Welding may produce harmful metal gas, especially weld plated material, the 6th, in further first being processed, need the link of a period of time cooling Site Welding, for such-and-such reason, its quality control, processing speed and completeness all can not reach gratifying degree.Therefore, when producing the vehicle exhaust system baffler, adopted the scheme of mechanical fastener, the same with the link of welding, between the baffler parts that match, though can not provide high-quality but be the resistance to compression of acceptable tension and twisting strength and acceptable anti-fatigue life and acceptable leak sealing at least.Up to now, this scheme of above-mentioned patent disclosure does not still obtain the mechanical connection of high-quality in baffler production.

At basic sides, the present invention is a kind of vehicle exhaust system baffler of improved whole mechanical connections.This baffler has one with bright chamber and end plate, and first pipeline reaches the chamber inner end plate from the chamber outside by end plate, and second pipe extends between inner end plate.

Mechanical fastener of the present invention connects each first pipeline, second pipe and inner end plate, second pipe has an end that extends in first pipeline, first pipeline tapping that has an annular flange flange by integral body to limit on the end plate, flange extends along first pipeline external of first pipeline and second pipe end.

Flange be connected pipeline and form together the projection that many circumferentially spaceds connect, first and second pipelines form the shape of two integral body at the opposing side of projection, radially outer extension hoop or ring, bind round and convex to form a link, this link is mechanical fully, and is good on the performance.

These and other task, aspect and advantage of the present invention proposes in most preferred embodiment describes in detail with reference to brief description of drawings.

Fig. 1 is the phantom of baffler, has shown the link of inside detail and most preferred embodiment of the present invention;

Fig. 2 is the sectional view of the most preferred embodiment cut open along 2-2 line among Fig. 1;

Fig. 3 is the sectional view of cutting open along 3-3 line among Fig. 2.

Most preferred embodiment of the present invention is a mechanical fastener 5 in the baffler 6, and the shell 7 of baffler 6 wraps in two coaxial end plates 8,9 and be connected with this end plate 8,9.First pipeline 10 passes end plate 8 and stretches into baffler 6 from the baffler outside, and another root first pipeline 11 passes end plate 9 and stretches out from baffler 6.Pipeline 10,11 stretches into inner panel, as: the plate 12 in baffler 6 inside, inner panel is divided into several chambeies to baffler inside, such as two chambeies 13,14.

First pipeline 10 is connected on the inner panel 12 by link 5, and pipeline 11 is by another link 5(pipeline 11 not shown in the figures) be connected on the inner panel equally.Each pipeline 10,11 is for lengthening, and is columnar and be isodiametric (except following part) basically on whole length.

Pipeline 10, the 11st, the outer tube of baffler 6.Also have two inner tubes or claim second pipe, as: pipe 15, each inner tube is extended between inner panel.Inner tube lengthens equally, and is columnar, is isodiametric (except following part) basically on whole length.

Only with reference to the accompanying drawing of inner panel 12, each inner panel comprises an edge 16 and a core 17, and this part 17 is essentially the plane.

As can be seen from Figure 2 part 17 comprises a flange 18, this flange 18 and part 17 be one and for ring-type, form the opening that device for cleaning pipeline is crossed part 17.Flange 18 vertically reaches middle body 17, axially along outer tube 10, flange in the outside of Outer Tube 10, its internal diameter is substantially equal to the external diameter of Outer Tube 10.

Inner tube 15 is enclosed within the outer tube 10, below the flange 18.Pipe 15 external diameter is substantially equal to manage 10 internal diameter.According to the definition that term " is enclosed within ", an end of pipe 15 is in an end of pipe 10, and pipe 15 is enclosed within below the flange 18, axially extends along the end that pipe 10,15 is overlapping at this place's flange 18.

Form two hoops 20,21 at pipeline 10,15, the hoop 20,21 in the axial sectional view in Fig. 2 is essentially half garden shape, each hoop 16 and each pipe are integrated, and in the form of a ring or fixing, the enlarged of the pipe that extends radially outwardly, hoop is connecting pipe to prevent from managing mutual axial motion.

As shown in Figure 3, bind round 20,21 on flange 18 and the Outer Tube 10 and form many protruding 22 between axially.Projection 22 forms on flange 18 and outer tube 10 simultaneously from managing 10.These projections are the deformation that causes of the interior punching of being expanded by flange and Guan Youyi and outer mold acting in conjunction and forming.Projection is around the diameter circumferentially spaced of flange and pipe, and at any one section, projection is substantially the same.Like this, just basically whole is hemisphere.The protruding outside to flange and pipe of projection.

Flange internal surface in the projection and the radius of pipe internal surface equate that basically the center of curve is in same point.Projection inward flange internal surface contacts pipe internal surface basically fully, and result, projection are extremely effectively mutually at axially and radially fixedly outer tube and flange.

Describe below link 5 in detail.Link 5 be not Site Welding and also do not have other attached bindiny mechanisms.Hoop, flange and projection are the devices of unique connecting tube and end plate.Link 5 is mechanical fully.Hoop, flange and projection are with fixing axial and radial position mechanical coupling pipe and inner panel, opposing pulling force, pressure and torsion.Hoop, flange and projection equally also are created in the sealing between plate and the pipe effectively.

Link 5 has various important advantage.Link 5 can shape rapidly easily, as long as a shaping, connection is effectively, and needn't cool off or finalize the design.Owing to do not have chemical reaction, therefore just do not have γ-ray emission yet.Protective coating does not destroy yet, and the material internal structure can significant change yet, and can check easily link 5 by the utmost point, and linking intensity is very high.

Narrated now most preferred embodiment of the present invention.This most preferred embodiment consists of the inventor and expects to implement best mode of the present invention.The present invention and making and use method of the present invention and course of working all clear, brief, explained in precise term, make any those skilled in the art can make and use the present invention.Because the present invention do not need the fine detail of repetition most preferred embodiment namely reproducible, therefore, below claim particularly point out and explicitly call for the inventor to wish the theme of protecting and the inventor pays close attention to.

Claims

1, shell is being arranged, end plate and inner panel and pipeline consist of in the vehicle exhaust system baffler of chamber, mechanical pipe and inner panel link be included in first pipeline and the second pipe that is nested together with above-mentioned first pipeline on many separating, whole, annular, the hoop that extends radially outwardly, tube opening on first inner panel of plate, an integral body of above-mentioned first inner panel of adjacent tube opening, the collar flange flange extends along first pipe, and be the outside of first pipeline, first pipeline passes the opening of flange, and many integral body, projection between binding round on joining first pipe and the flange mutually.

2, having pipe and pipeline to consist of in the vehicle exhaust system baffler of chamber, plate and joint for pipe comprise:

At the flange that axially extends along first pipeline;

The annular collar that connects first pipeline and second pipe;

The integral body of many connection first pipelines and flange connects projection.

3, plate and Pipe jointing part comprise:

Flange on the plate that axially extends along first pipe;

Connect many integral body of first pipe and flange, connect projection;

The annular collar that connects first pipe and second sleeve pipe.

4, according to the coupling of claim 2 or 3, wherein, flange and plate are whole.

5, according to the coupling of claim 2 or 3, wherein, flange is in first tube outside.

6, according to the coupling of claim 2 or 3, wherein, projection outwards protrudes into first pipeline and flange.

7, according to the link of claim 2 or 3, wherein, projection is out of shape simultaneously by first pipeline and flange and is formed.

8, according to the link of claim 2 or 3, wherein, plate and first pipeline are that metal is made.

9, according to the link of claim 2 or 3, wherein, bind round the hoop that the ring-type for integral body extends radially outwardly at pipeline.

10, according to the link of claim 2 or 3, wherein, flange and first tube contacts.

11, according to the link of claim 2 or 3, wherein, protruding circumferentially spaced.

12, according to the link of claim 2 or 3, wherein, projection is complementary with first pipeline and lip diameter.

13, according to the link of claim 2 or 3, wherein, projection is hemisphere basically.

14, according to the link of claim 2 or 3, wherein, hoop, flange and projection consist of the device of complete mechanical joining plate and pipeline.

15, according to the link of claim 2 or 3, wherein, hoop, flange and projection consist of with fixing axially and radial position mechanical coupling plate and pipeline with opposing pulling force, compressive force and torsion and pressure.

16, according to the link of claim 2 or 3, wherein, hoop is first hoop, also comprises:

Bind round second annular collar that separates to connect first of first pipeline and second pipe;

The projection that between first hoop and second hoop, forms.