CN201972769U

CN201972769U - Connecting structure for automobile exhaust pipe

Info

Publication number: CN201972769U
Application number: CN2011200537371U
Authority: CN
Inventors: 潘金良
Original assignee: Changzhou Liangxu Vehicle Fittings Co Ltd
Current assignee: Changzhou Liangxu Vehicle Fittings Co Ltd
Priority date: 2011-03-03
Filing date: 2011-03-03
Publication date: 2011-09-14
Anticipated expiration: 2021-03-03

Abstract

The utility model discloses a connecting structure for an automobile exhaust pipe, which comprises a first pipeline and a second pipeline, wherein an annular bulge projected out of the outer wall surface of the first pipeline is arranged on the outer circumferential wall of the first pipeline, a pipe opening of the second pipeline is provided with an outer flange used for forming sealed matching with the annular bulge, and the annular bulge of the first pipeline is tightly fitted with the outer flange after the end part of the first pipeline is inserted into the second pipeline. The connecting structure has the advantage that the position staggering generated during the butt joint of the exhaust pipelines can be prevented.

Description

The linkage structure of automobile exhaust pipe

Technical field

The present invention relates to the auto parts machinery technical field, be specifically related to a kind of linkage structure of automobile exhaust pipe.

Background technique

Existing outlet pipe is a docking structure, and the mouth of pipe place of two tubes is a plane structure, during installation, in order to increase the sealing of mouth of pipe joint, by increase asbestos packing between the mouth of pipe of two pipes, the joint is held tightly by clip after connecting.Can improve sealing although it is so, but two tubes does not form good location in the process of butt joint, can form dislocation when causing butt joint, cause the installment state disunity (coaxality can not get guaranteeing) of two tubes, shortcomings such as sealing difference.

Summary of the invention

At above-mentioned technical problem, the purpose of this utility model provides a kind of outlet pipe that can prevent and the linkage structure of the automobile exhaust pipe of dislocation occurs when butt joint.

The technological scheme that realizes the utility model purpose is as follows:

The linkage structure of automobile exhaust pipe, comprise first pipeline, second pipeline, the outer circle wall of described first pipeline is provided with the annular protrusion that protrudes from this first pipeline outer wall face, the mouth of pipe place of second pipeline is provided with and is used for forming the flanging that is sealed and matched with annular protrusion, and the annular protrusion and the described flanging of this first pipeline fitted tightly after the end of first pipeline was inserted in second pipeline.

Also comprise a clip, this clip surrounds annular protrusion and flanging in the face that fits tightly of back locking annular protrusion and flanging.

Described clip comprises the hoop body with opening, hoop body is provided with connecting plate at its opening, internal surface at hoop body is provided with the groove that surrounds annular protrusion and flanging, on two axial ends of hoop body, be equipped with flanging, form a plurality of recesses from inside to outside in the madial wall of flanging to the direction of outer side wall.

The left surface of described annular protrusion and right flank are the inclined-plane, and the upper surface of this annular protrusion is the anchor ring that is parallel to first pipeline axial, and the gradient of left surface and right flank is 15 degree to 25 degree.

The angle α of described flanging inner side surface and vertical direction is that 15 degree are to 25 degree.

Adopted such scheme, the annular protrusion and the described flanging of this first pipeline fitted tightly after the insertion pipe of first pipeline was inserted in second pipeline.When insertion pipe is inserted in second pipeline, make first pipeline and second pipeline form positioning action mutually, therefore, after two pipeline butt joints dislocation can not appear.Fitting tightly relation between annular protrusion and the flanging has also improved simultaneously the sealing between two pipelines.

Description of drawings

Fig. 1 is the structural representation of the linkage structure of automobile exhaust pipe in the utility model;

Fig. 2 is the structural representation of first pipeline;

Fig. 3 is the structural representation of second pipeline;

Fig. 4 is the three-dimensional structure diagram of clip;

10 is first pipeline, and 11 is annular protrusion; 12 is left surface, and 13 is right flank, and 14 is upper surface, and 15 is annular groove;

20 is second pipeline, and 21 is flanging, and 22 is interior shoulder hole;

30 is clip, and 31 is hoop body, and 32 is connecting plate, and 33 is groove, and 34 is flanging, and 35 is recess.

Embodiment

Referring to figs. 1 through Fig. 4, the linkage structure of first kind of automobile exhaust pipe of the present utility model, it is made up of first pipeline 10, second pipeline 20 and clip 30.Respectively the structure of every part is made detailed explanation below:

The outer circle wall of first pipeline 10 is provided with the annular protrusion 11 that protrudes from this first pipeline outer wall face, the molding mode of annular protrusion 11 can have multiple, can adopt the mould that rises to apply turgor pressure power to outer surface from the internal surface of first pipeline 10, groove of moulding on the internal face of first pipeline 10, moulding annular protrusion on the outer wall of first pipeline 10; Also can adopt the mode moulding of casting in addition.In the present embodiment, what adopt is that internal surface from first pipeline 10 applies turgor pressure power to outer surface, so in the outer wall moulding of first pipeline 10 annular protrusion 11, on the internal face of first pipeline 10 moulding an annular groove 15 not, the contour shape of this annular groove 15 is identical with the shape of annular protrusion 11, and the form of rounding has all been adopted in each corner in groove 15.The left surface 12 of the annular protrusion of final molding and right flank 13 are the inclined-plane, and the upper surface of this annular protrusion is the anchor ring 14 that is parallel to first pipeline axial, and the gradient of left surface and right flank is 20 degree.For the annular protrusion 11 and the annular groove 15 of above-mentioned shape, after imposing turgor pressure, has very big convenience for taking out the turgor pressure mould.

The mouth of pipe place of second pipeline 20 is provided with and is used for forming the flanging 21 that is sealed and matched, flanging 21 flares with annular protrusion 11.The angle α of described flanging 21 inner side surfaces and vertical direction be 15 the degree to 25 the degree, this angle be preferably 20 the degree.Flanging 21 is to turn down moulding from inside to outside in the end of second pipeline, and after its moulding, the global shape of this flanging is horn-like.Shoulder hole 22 in establishing between second pipeline 20 and the flanging 21, the aperture of interior shoulder hole is greater than the internal diameter of second pipeline, and the aperture of interior shoulder hole 22 equates with the external diameter at the first pipeline mouth of pipe place.The annular protrusion 11 of this first pipeline fits tightly with described flanging 21 after the end of first pipeline 10 is inserted in second pipeline 20, annular protrusion and flanging is surrounded the face that fits tightly of back locking annular protrusion 11 and flanging 21 with clip 30.

Clip 30 comprises the hoop body 31 with opening, hoop body 31 is provided with connecting plate 32 at its opening, have through hole on the connecting plate 32, after hoop body 31 surrounds annular protrusion and flanging, be connected with nut after passing through hole on the connecting plate 32 with screw, the aperture of opening is dwindled, can make hoop body 31 hold annular protrusion 11 and flanging 21 tightly like this, both junction planes are closely fitted.Internal surface at hoop body 31 is provided with the groove 33 that surrounds annular protrusion and flanging, and the moulding of this groove 33 can be by casting or machining mode.Be equipped with flanging 34 on two axial ends of hoop body, flanging 34 is that the inboard from the groove 33 of hoop body 31 turns down moulding laterally, after its moulding with the parallel to an axis of hoop body 31.Form a plurality of recesses 35 from inside to outside in the madial wall of flanging to the direction of outer side wall, recess 35 is that wall is stamping forming laterally for interior sidewall surface from flanging, therefore, on the outer wall of flanging, form the structure of projection, adopt such structure, the intensity of flanging is reduced, but also help to make the toughness of clip integral body to be kept.

Claims

1. the linkage structure of automobile exhaust pipe, comprise first pipeline (10), second pipeline (20), it is characterized in that: the outer circle wall of described first pipeline (10) is provided with the annular protrusion (11) that protrudes from this first pipeline outer wall face, the mouth of pipe place of second pipeline (20) is provided with and is used for and annular protrusion (11) forms the flanging (21) be sealed and matched, and the annular protrusion and the described flanging of this first pipeline fitted tightly after the end of first pipeline (10) was inserted in second pipeline.

2. the linkage structure of automobile exhaust pipe according to claim 1 is characterized in that: also comprise a clip (30), this clip (30) surrounds annular protrusion and flanging in the face that fits tightly of back locking annular protrusion (11) and flanging (21).

3. the linkage structure of automobile exhaust pipe according to claim 2, it is characterized in that: described clip (30) comprises the hoop body (31) with opening, hoop body (31) is provided with connecting plate (32) at its opening, internal surface at hoop body is provided with the groove (33) that surrounds annular protrusion and flanging, on two axial ends of hoop body, be equipped with flanging (34), form a plurality of recesses (35) from inside to outside in the madial wall of flanging to the direction of outer side wall.

4. according to the linkage structure of any described automobile exhaust pipe of claim 1 to 3, it is characterized in that: the left surface of described annular protrusion (11) and right flank are the inclined-plane, the upper surface of this annular protrusion is for being parallel to the axial anchor ring of first pipeline (10), and the gradient of left surface and right flank is 15 degree to 25 degree.

5. according to the linkage structure of any described automobile exhaust pipe of claim 1 to 3, it is characterized in that: the angle α of described flanging (21) inner side surface and vertical direction is that 15 degree are to 25 degree.