CN85105242A

CN85105242A - The mechanical interlocking link that connects pipe

Info

Publication number: CN85105242A
Application number: CN 85105242
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: 1987-01-28
Also published as: CN85105242B

Abstract

In the vehicle exhaust system baffler, two covers that are nested together and inner panel are connected by an entirely mechanical link.Two axially spaced hoops extend around pipe.Hoop and pipe, disk are one, and extend radially outwardly, and an annular flange flange of plate is extended along outer tube.The mutual projection of many integral body forms in outer tube and flange simultaneously.Hoop, flange and ground connecting tube of protruding complete mechanical and inner panel.

Description

The mechanical interlocking link that connects pipe

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 field 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 field welding may be difficult to check; The second, field welding may thoroughly change the structure of the connected element of link in the link that welds at the scene and the vicinity field welding; The 3rd, field welding may be destroyed the continuity of protective layer on connected element; The 4th, material deformation when welding, the connected element center may change; The 5th, field welding may produce harmful metal gas, especially welds plated material; The 6th, in further first being processed, need the link of a period of time cooling field 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 the chamber and the end plate of a band shell, and first pipeline reaches the chamber inner end plate from the chamber outside by end plate, and second pipeline extends between inner end plate.

Mechanical fastener of the present invention connects each first pipeline, second pipeline and inner end plate, second pipeline 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 of first pipeline and second pipe end is outside.

Flange forms the projection that many circumferentially spaceds are connected together with first pipeline, first and second pipelines form the shape of two integral body on 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 is connected with this end plate 8,9.One 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, 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 the 10, the 11st, the outer tube of baffler 6.Pipe or claim second pipe in also having two, as: pipe 15, pipe extends between inner panel in each.Interior pipe extends 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 of pipeline by 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.

In pipe 15 be 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 on 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 one, and in the form of a ring or fixing, the enlarged of the pipe that extends radially outwardly, hoop is connecting pipe to prevent to manage 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 projectioies are interior the dashing and deformation that the outer mold acting in conjunction causes and forming of being expanded by flange and Guan Youyi.Projection is around the diameter circumferentially spaced of flange and pipe, and at any one section, projection is substantially the same.Like this, just whole basically is hemisphere.The protruding outside of projection to flange and pipe.

The 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 is contact tube internal surface fully basically, and result, projection are extremely effectively mutually at axially and radially fixedly outer tube and flange.

Describe link 5 below in detail.Link 5 be not field 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 gas to produce yet.Protective coating does not destroy yet, and the material internal structure can significant change yet, and can check link 5 easily by the utmost point, and linking intensity is very high.

Narrated most preferred embodiment of the present invention now.This most preferred embodiment constitutes 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 be all clear, brief, explained in precise term, and makes 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 promptly 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 constitute in the vehicle exhaust system baffler of chamber, mechanical pipe and inner panel link be included in first pipeline and second pipeline 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 on first pipe that connects mutually and the flange between the hoop.

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

At axial flange along first pipe extension;

The annular collar that connects first pipeline and second pipeline;

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 link 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, the plate and first pipeline are that metal is made.

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

10, according to the link of claim 2 or 3, wherein, the 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 constitute the device of complete mechanical joining plate and pipeline.

15, according to the link of claim 2 or 3, wherein, hoop, flange and projection constitute 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 pipeline;

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