CN211623532U

CN211623532U - Connecting structure of automobile engine and exhaust system pipeline

Info

Publication number: CN211623532U
Application number: CN201922295466.XU
Authority: CN
Inventors: 伊恩·布朗
Original assignee: Funwick Precision Technology Kunshan Co ltd
Current assignee: Funwick Precision Technology Kunshan Co ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-10-02
Anticipated expiration: 2029-12-19

Abstract

The utility model relates to a connecting structure of an automobile engine and an exhaust system pipeline, which comprises a first pipe, a second pipe, a horn-shaped ring pad and a V-shaped groove clamp, wherein the end part of the first pipe is provided with a horn part which is provided with a first outer conical surface and a first inner conical surface; the end part of the second pipe is provided with a circle of boss, the circle of boss is provided with a second outer conical surface and a second inner conical surface, the second inner conical surface is meshed with the first inner conical surface, a horn-shaped ring gasket is arranged between the first inner conical surface and the second inner conical surface, a wavy structure which fluctuates up and down is arranged on the horn-shaped ring gasket, and the wavy structure comprises a wave crest ring groove and a wave trough ring groove; the V-shaped groove is arranged on the inner side of the V-shaped groove hoop and wrapped on the outer sides of the first outer conical surface and the second outer conical surface. The utility model discloses make the interior conical surface contact of crest annular and trough annular and two connecting line tip on the wavy structure, reduced area of contact, contact pressure increases under the certain circumstances of V-arrangement clamp locking force, and then has improved the leakproofness of connecting.

Description

Connecting structure of automobile engine and exhaust system pipeline

Technical Field

The utility model relates to an automobile engine makes the field, especially relates to a connection structure of automobile engine and exhaust system pipeline.

Background

With the improvement of the living standard of people, automobiles enter every family, and V-shaped groove clamp connection structures (CN201720458314.5 and ZL201821493553.5) are widely applied to the pipeline connection of an exhaust system and a power system of the automobiles because the V-shaped groove clamp connection structures are convenient and easy to install and inherit the advantages of flange connection. However, in the conventional V-groove clamp connection structure, the first pipe to be connected and the second pipe to be connected are in direct surface-to-surface contact, and when the flatness of the end surfaces is not sufficient or due to other non-manufacturing reasons (for example, foreign particles are attached to the end surfaces or the end surfaces are deformed by impact during transportation), a gap is formed between the end surfaces (see fig. 10), and the sealing effect is greatly reduced. There is a great need in the art for a new connection structure. Not only can realize swift simple and convenient installation, can guarantee the leakproofness of tube coupling moreover.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes V-arrangement clamp connection structure connecting line tip plane surface contact among the prior art, sealed not tight technical problem provides a connection structure of automobile engine and exhaust system pipeline.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the pipe fitting comprises a first pipe, a second pipe, a horn-shaped ring gasket and a V-shaped groove clamp, wherein a horn part is arranged at the end part of the first pipe, and is provided with a first outer conical surface and a first inner conical surface; the end part of the second pipe is provided with a circle of boss, the circle of boss is provided with a second outer conical surface and a second inner conical surface, the second inner conical surface is meshed with the first inner conical surface, the horn-shaped ring gasket is arranged between the first inner conical surface and the second inner conical surface, a wavy structure which fluctuates up and down is arranged on the horn-shaped ring gasket, and the wavy structure comprises a wave crest ring groove and a wave trough ring groove; the V-shaped groove is formed in the inner side of the V-shaped groove clamp, and the V-shaped groove wraps the outer sides of the first outer conical surface and the second outer conical surface.

In a preferred embodiment of the present invention, the flared ring cushion further comprises a ring of the wave crest ring groove and a ring of the wave trough ring groove.

In a preferred embodiment of the present invention, the wavy structure further comprises a sine curve, and the value of the angular velocity ω in the sine curve expression y ═ sin (ω x) is in the range of 0.5 to 1.

The utility model discloses a preferred embodiment, further include V-arrangement groove clamp, the locking portion contains locking portion and the left and right centrosymmetric clamp body of falling omega shape, locking portion contains bolt and nut, the clamp body top of falling omega shape is equipped with the opening, the bolt passes behind the opening with nut locking connection, the clamp body lower extreme of falling omega shape is equipped with flat bottom.

In a preferred embodiment of the present invention, the flared ring pad further comprises at least 3 guide pieces at the small end thereof, wherein the outer surface of the end of each guide piece is provided with a tooth-shaped or drop-shaped protrusion.

In a preferred embodiment of the present invention, the flared ring pad further comprises an inverted U-shaped first connecting piece disposed at the top of the large opening end, wherein the end of a vertical edge of the inverted U-shaped first connecting piece is fixedly connected to the top of the large opening end; the arc section of the first connecting piece of the inverted U shape is hung on the bolt in the opening.

In a preferred embodiment of the present invention, the bottom of the large opening end is provided with a T-shaped second connecting piece, one end of the transverse edge of the T-shaped second connecting piece is fixedly connected with the bottom of the large opening end, and the flat bottom is clamped between two transverse edges of the T-shaped second connecting piece.

In a preferred embodiment of the present invention, the first connecting piece of the inverted U-shape is provided with a reinforcing rib along a length direction, the reinforcing rib is integrally formed with the first connecting piece of the inverted U-shape, the reinforcing rib protrudes from a surface of one side of the first connecting piece of the inverted U-shape facing the first pipe, and a surface of the other side of the first connecting piece of the inverted U-shape is recessed.

In a preferred embodiment of the present invention, the first connecting piece is a U-shaped piece, and the second connecting piece is a U-shaped piece.

In a preferred embodiment of the present invention, the flared ring pad, the guide piece, the inverted U-shaped first connection piece, and the T-shaped second connection piece are made of 301 stainless steel, and the first tube, the second tube, and the V-shaped groove clamp are made of 304, 316, 321, or 316ti stainless steel, respectively.

The utility model provides a defect that exists among the background art, the utility model discloses a set up the tubaeform ring pad that has wavy structure between first interior circular conical surface and the second interior circular conical surface for the structural peak of crest annular and the valley bottom of trough annular of wavy and the tip circular conical surface contact of two connecting tube way, reduced area of contact, under the certain circumstances of V-arrangement clamp locking force, area of contact reduces, and pressure increases, and the leakproofness improves. Correspondingly, under the condition of achieving the same sealing effect, smaller V-shaped clamp locking force can be required, the size of the V-shaped clamp can be smaller, the used materials can be less, the installation is simpler and more convenient, and the material cost is lower.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention;

FIG. 2 is a schematic view of another angle of the preferred embodiment of the present invention;

FIG. 3 is an axial cross-sectional view of the preferred embodiment of the present invention prior to assembly;

FIG. 4 is an axial cross-sectional view of the preferred embodiment of the present invention, after assembly;

fig. 5 is a partially enlarged view of a portion a in fig. 4;

FIG. 6 is a front view of a preferred embodiment flared ring pad of the present invention;

fig. 7 is a schematic structural view of an inverted omega-shaped clamp body according to a preferred embodiment of the present invention;

FIG. 8 is a left side view of the inverted omega-shaped clip body of the preferred embodiment of the present invention;

FIG. 9 is a schematic view of the assembled V-groove clamp and flared ring of the preferred embodiment of the present invention;

FIG. 10 is a schematic diagram of a prior art defective structure

Detailed Description

The invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic drawings and illustrate, by way of illustration only, the basic structure of the invention, and which therefore show only the constituents relevant to the invention.

As shown in fig. 1, a connection structure of an automobile engine and an exhaust system pipe comprises a first pipe 100, a second pipe 200, a flared ring gasket 300 and a V-shaped groove clamp 400, wherein a flared portion 110 is provided at an end portion of the first pipe 100, and the flared portion 110 is provided with a first external conical surface 111 and a first internal conical surface 112; the end of the second pipe 200 is provided with a circle of bosses 210, the circle of bosses 210 are provided with a second outer conical surface 211 and a second inner conical surface 212, the second inner conical surface 212 is meshed with the first inner conical surface 112, a horn-shaped ring pad 300 is arranged between the first inner conical surface 112 and the second inner conical surface 212, the horn-shaped ring pad 300 is provided with a wavy structure 310 which fluctuates up and down, and the wavy structure 310 comprises a crest ring groove 311 and a trough ring groove 312; the V-shaped groove 440 is formed on the inner side of the V-shaped groove clip 400, and the V-shaped groove 440 is wrapped on the outer sides of the first external conical surface 111 and the second external conical surface 211. In the design, the flared ring pad with the wave-shaped structure 310 is arranged between the first inner conical surface 112 and the second inner conical surface 212, so that the peak top of the wave-shaped structure and the valley bottom of the wave-shaped structure, namely the peak ring groove 311 and the valley ring groove 312, are in contact with the inner conical surfaces of the end parts of the two connecting pipelines, the contact area is reduced, the pressure is increased and the sealing performance is improved under the condition that the locking force of the V-shaped clamp 400 is certain. Correspondingly, under the condition of achieving the same sealing effect, smaller V-shaped clamp locking force is required, so that the V-shaped clamp is smaller in size, less in material consumption, more convenient to mount and lower in material cost. The conicity of the first external conical surface, the first internal conical surface, the second external conical surface and the second internal conical surface is the same, and the conicity range is 1.2: 9 to 1.7: 9, preferably 1.5: 9.

the flared ring pad 300 is provided with a ring of crest ring grooves 311 and a ring of trough ring grooves 312.

The wavy structure 310 has a sine curve, and the value of the angular velocity ω in the sine curve expression y ═ sin (ω x) ranges from 0.5 to 1.

V-arrangement groove clamp 400 contains locking portion 410 and the reverse omega shape clamp body 420 of bilateral central symmetry, and locking portion 410 contains bolt 411 and nut 412, and reverse omega shape clamp body 420 top is equipped with opening 430, and bolt 411 passes behind opening 430 and nut 412 locking connection, and reverse omega shape clamp body 420 lower extreme is equipped with flat bottom 421.

The small opening end 320 of the flared ring pad 300 is provided with at least 3 guide pieces 330, and the outer surface of the end of the guide pieces 330 is provided with tooth-shaped or drop-shaped protrusions 331. The tooth-shaped or drop-shaped protrusion 331 is designed to allow the flared ring pad 300 to be pre-engaged with the inside of the flared portion of the first tube.

The top of the large opening end 340 of the horn-shaped ring pad 300 is provided with an inverted U-shaped first connecting piece 341, and the end of one vertical edge of the inverted U-shaped first connecting piece 341 is fixedly connected with the top of the large opening end 340; the arc section of the inverted U-shaped first connecting piece 341 is hung on the bolt 411 in the opening 430.

The bottom of the large opening end 340 is provided with a T-shaped second connecting piece 342, one transverse edge end part of the T-shaped second connecting piece 342 is fixedly connected with the bottom of the large opening end 340, and the flat bottom 421 is clamped between two transverse edges of the T-shaped second connecting piece 342. The flared gasket 300 is fixed to the V-shaped clamp 400 by this design, and during operation, an installer only needs to hold the first pipe 100 with one hand and lock the nut 412 on the V-shaped clamp 400 with the other hand using a torque wrench to complete the installation operation.

The first connecting piece 341 of the inverted U shape is provided with a reinforcing rib 350 along the length direction, the reinforcing rib 350 is integrally formed with the first connecting piece 341 of the inverted U shape, the reinforcing rib 350 is protruded on one side surface of the first connecting piece 341 of the inverted U shape facing the first pipe 100, and is recessed on the other side surface of the first connecting piece 341 of the inverted U shape.

Two reinforcing ribs are arranged in parallel along the reinforcing rib 350, and the two reinforcing ribs 350 are arranged in the middle of the width direction of the inverted U-shaped first connecting piece 341. The area of the U-shaped first connecting piece 341 is increased due to the design, the strength of the U-shaped first connecting piece 341 is enhanced, the deformation is reduced, and the stability of the product is improved.

The thickness of the flared ring pad 300 is 0.5 to 1 mm, the height of the wave crest ring groove 311 is 0.5 to 1 mm, and the depth of the wave trough ring groove 312 is 0.5 to 1 mm.

The flared ring pad 300, the guide tabs 330, the inverted U-shaped first connection tab 341, and the T-shaped second connection tab 342 are made of 301 stainless steel, and the first tube 100, the second tube 200, and the V-groove clamp 400 are made of one of 304, 316, 321, and 316ti stainless steel, respectively. The performance that the stainless steel material has good ductility can be fully utilized, and the horn-shaped ring pad 300 and the inverted-U-shaped first connecting piece 341 are stamped to form a wavy structure and reinforcing ribs, so that the horn-shaped ring pad 300, the wavy structure, the inverted-U-shaped first connecting piece 341 and the reinforcing ribs are of an integrated structure, and on one hand, the horn-shaped ring pad 300, the wavy structure and the inverted-U-shaped first connecting piece 341 are formed in one piece, so that the stamping process is carried out at one time, and the processing efficiency; on the other hand, the integral structure enables the structural strength to be enhanced.

In light of the foregoing, it is to be understood that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a connection structure of automobile engine and exhaust system pipeline, contains first pipe, second pipe, tubaeform ring gasket and V-arrangement groove clamp, its characterized in that: the end part of the first pipe is provided with a horn part, and the horn part is provided with a first outer conical surface and a first inner conical surface; the end part of the second pipe is provided with a circle of boss, the circle of boss is provided with a second outer conical surface and a second inner conical surface, the second inner conical surface is meshed with the first inner conical surface, the horn-shaped ring gasket is arranged between the first inner conical surface and the second inner conical surface, a wavy structure which fluctuates up and down is arranged on the horn-shaped ring gasket, and the wavy structure comprises a wave crest ring groove and a wave trough ring groove; the V-shaped groove is formed in the inner side of the V-shaped groove clamp, and the V-shaped groove wraps the outer sides of the first outer conical surface and the second outer conical surface.

2. The connecting structure of the automobile engine and the exhaust system pipeline according to claim 1, wherein a ring of the wave crest ring groove and a ring of the wave trough ring groove are arranged on the horn-shaped ring gasket.

3. The connecting structure of the automobile engine and the exhaust system pipeline is characterized in that the wave shape of the wavy structure is a sine curve, and the value range of the angular speed omega in the sine curve expression y-sin (ω x) is 0.5-1.

4. The connection structure of the automobile engine and the exhaust system pipeline according to claim 3, wherein the V-shaped groove clamp comprises a locking portion and an inverted omega-shaped clamp body which is centrosymmetric left and right, the locking portion comprises a bolt and a nut, an opening is formed in the top end of the inverted omega-shaped clamp body, the bolt penetrates through the opening and is in locking connection with the nut, and a flat bottom is arranged at the lower end of the inverted omega-shaped clamp body.

5. The connecting structure of the automobile engine and the exhaust system pipeline according to claim 4, wherein the small end of the flared ring pad is provided with at least 3 guide pieces, and the outer surface of the end of each guide piece is provided with a tooth-shaped or water-drop-shaped protrusion.

6. The connecting structure of the automobile engine and the exhaust system pipeline according to claim 5, wherein an inverted U-shaped first connecting piece is arranged at the top of the large opening end of the horn-shaped ring gasket, and the end part of one vertical edge of the inverted U-shaped first connecting piece is fixedly connected with the top of the large opening end; the arc section of the first connecting piece of the inverted U shape is hung on the bolt in the opening.

7. The structure for connecting the automobile engine and the exhaust system pipeline according to claim 6, wherein a T-shaped second connecting piece is arranged at the bottom of the large opening end, one transverse edge end of the T-shaped second connecting piece is fixedly connected with the bottom of the large opening end, and the flat bottom is clamped between two transverse edges of the T-shaped second connecting piece.

8. The connecting structure of the automobile engine and the exhaust system pipe according to claim 7, wherein the first inverted U-shaped connecting piece is provided with a reinforcing rib along a length direction, the reinforcing rib is integrally formed with the first inverted U-shaped connecting piece, the reinforcing rib protrudes from one side surface of the first inverted U-shaped connecting piece facing the first pipe, and is recessed from the other side surface of the first inverted U-shaped connecting piece.

9. The connecting structure of the automobile engine and the exhaust system pipe according to claim 8, wherein two reinforcing ribs are arranged in parallel, and the two reinforcing ribs are arranged in the center in the width direction of the inverted U-shaped first connecting piece.

10. The connecting structure of the automobile engine and the exhaust system pipeline according to claim 9, wherein the material of the flared ring pad, the guide sheet, the inverted U-shaped first connecting sheet and the T-shaped second connecting sheet is 301 stainless steel, and the material of the first pipe, the material of the second pipe and the material of the V-shaped groove clamp are 304, 316, 321 or 316ti stainless steel respectively.