CN216555799U

CN216555799U - Thin-wall flange for connecting automobile exhaust pipe

Info

Publication number: CN216555799U
Application number: CN202123019468.XU
Authority: CN
Inventors: 臧士清; 沈娟; 胡伟峰
Original assignee: Wuxi Rongda Automotive Components Co ltd
Current assignee: Wuxi Rongda Automotive Components Co ltd
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-05-17
Anticipated expiration: 2031-12-03

Abstract

The utility model discloses an automobile exhaust pipe connection thin-wall flange which comprises a flange body, wherein the outer side surface of the flange body is fixedly connected with an exhaust pipe body, the inner side surface of the flange body is provided with a placing groove, a sealing mechanism is arranged inside the placing groove, the sealing mechanism comprises a movable block, a spring and a sealing ring, the bottom of the placing groove is provided with a mounting groove, the spring is fixedly connected to the bottom of the mounting groove, and the bottom, far away from the mounting groove, of the spring is fixedly connected with a mounting surface of the movable block. The sealing device has a simple structure and reasonable design, can well overcome the defects of the prior art, is provided with the spring in the sealing mechanism, and the elastic force generated by the spring extrudes the movable block, so that the sealing ring is always kept in a pressing state, the sealing time is prolonged, three-stage sealing can be effectively realized by matching the flange with the movable block and the sealing ring, and the whole sealing performance is improved.

Description

Thin-wall flange for connecting automobile exhaust pipe

Technical Field

The utility model relates to the technical field of automobile parts, in particular to a thin-wall connecting flange for an automobile exhaust pipe.

Background

The exhaust pipe is a part of an engine exhaust system, the exhaust system mainly comprises an exhaust manifold, an exhaust pipe and a silencer, a three-way catalyst for controlling the pollutant emission of the engine is generally arranged in the exhaust system, after the engine is ignited, a piston starts to perform a power stroke, the exhaust pipe is opened before the piston reaches a lower dead point, at the moment, the back pressure in the pipe can block the waste gas to flush out, the mixed gas can be completely combusted, but the back pressure is too strong, the waste gas cannot be completely exhausted out of a cylinder, the waste gas and the mixed gas are combusted together to reduce the combustion efficiency, and the most direct way is to influence the horsepower output; the semi-back pressure exhaust pipe has lower back pressure force, the exhaust smoothness is better than that of a back pressure pipe, in short, the proper back pressure is arranged between the back pressure pipe and a straight-through pipe to obtain starting torque, the exhaust smoothness is better than that of the back pressure pipe, and the medium-high rotating speed torque is also larger than that of the back pressure pipe; the straight-through pipe has better acceleration performance than a back pressure pipe, but has the biggest defects of very loud noise, extremely low back pressure, no resistance in exhaust, poorer low-rotating-speed torsion and larger middle-high rotating-speed torsion; the semi-straight pipe is the same as the semi-back pressure pipe in nature, but the exhaust port is larger than that of the semi-back pressure pipe; variable exhaust pipes, which are connected to the engine via flanges, control exhaust through valves to optimize sound and performance.

Most of the existing exhaust pipe connecting flanges are of secondary sealing or even primary sealing, the sealing performance is not high, the sealing performance is reduced after long-time operation, and the sealing performance of the whole exhaust pipe is further influenced, so that the prior art needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art, and provides a thin-wall flange for connecting an automobile exhaust pipe.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides an automobile exhaust blast pipe connects thin wall flange, includes the flange body, the outside fixed surface of flange body is connected with the blast pipe body, the standing groove has been seted up to the inboard surface of flange body, the inside of standing groove is provided with sealing mechanism.

As a further description of the above technical solution:

the sealing mechanism comprises a movable block, a spring and a sealing ring, a mounting groove is formed in the bottom of the placing groove, the spring is fixedly connected to the bottom of the mounting groove, the bottom of the spring, far away from the mounting groove, is fixedly connected with the mounting surface of the movable block, a groove is formed in the sealing surface of the movable block, and the sealing ring is movably connected to the inside of the groove.

As a further description of the above technical solution:

the bottom of standing groove just is located the upper and lower side of mounting groove and has all seted up the guide way, the installation face of movable block just is close to the equal fixedly connected with guide bar of lower side edge, the guide bar extends to the inside of guide way.

As a further description of the above technical solution:

the flange comprises a flange body and is characterized in that bolts are movably connected inside the flange body and penetrate through the flange body and are movably connected with nuts.

As a further description of the above technical solution:

the shape of movable block is the ring shape, the quantity of sealing washer is a plurality of, and is a plurality of sealing washer and movable block are the concentric design.

As a further description of the above technical solution:

the combined shape of the sections of the placing groove and the mounting groove is in a convex shape.

As a further description of the above technical solution:

the placing groove and the mounting groove are both circular rings.

As a further description of the above technical solution:

the movable block and the sealing ring are made of fluororubber materials.

The utility model has the following beneficial effects:

1. compared with the prior art, this thin wall flange is connected to automobile exhaust blast pipe sets up the spring in sealing mechanism, and the elasticity that the spring produced extrudees the movable block for the sealing washer remains the state of compressing tightly all the time, is favorable to prolonging sealed time.

2. Compared with the prior art, the thin-wall flange for connecting the automobile exhaust pipe can effectively realize three-level sealing by matching the flange with the movable block and the sealing ring, and is favorable for improving the sealing performance.

Drawings

FIG. 1 is a perspective view of an external structure of a thin-walled flange for connecting an automobile exhaust pipe according to the present invention;

FIG. 2 is a front view of the internal structure of a thin-walled flange for connecting an exhaust pipe of an automobile according to the present invention;

FIG. 3 is a front view of the external structure of a thin-walled flange for connecting an exhaust pipe of an automobile according to the present invention;

fig. 4 is an enlarged schematic view of a portion a in fig. 2.

Illustration of the drawings:

1. a flange body; 2. a bolt; 3. a nut; 4. an exhaust pipe body; 5. a seal ring; 6. a movable block; 7. a spring; 8. a guide bar; 9. a guide groove; 10. mounting grooves; 11. and (6) placing the groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, the utility model provides a thin-walled flange for connecting an automobile exhaust pipe, which comprises a flange body 1, wherein an exhaust pipe body 4 is fixedly connected to the outer side surface of the flange body 1, the exhaust pipe body 4 is used for facilitating the exhaust of the exhaust generated during the operation of an automobile, a placing groove 11 is formed in the inner side surface of the flange body 1 for facilitating the placement and the accommodation of a movable block 6, a sealing mechanism is arranged in the placing groove 11, the sealing mechanism comprises a movable block 6, a spring 7 and a sealing ring 5, a mounting groove 10 is formed in the bottom of the placing groove 11, the spring 7 is fixedly connected to the bottom of the mounting groove 10, the bottom of the spring 7, which is far away from the mounting groove 10, is fixedly connected with a mounting surface of the movable block 6, a groove is formed in a sealing surface of the movable block 6, the sealing ring 5 is movably connected to the inside of the groove, and the spring 7 is extruded by moving the movable block 6, at the moment, the elastic force generated by the spring 7 positions and clamps the movable block 6, so that the sealing effect of the flange body 1 is improved.

The guide way 9 has all been seted up to the bottom of standing groove 11 and the last downside that is located mounting groove 10, be the effect that leads for the convenience of cooperation guide bar 8 through using guide way 9, the installation face of movable block 6 just is close to the equal fixedly connected with guide bar 8 of last downside edge, guide bar 8 extends to the inside of guide way 9, through the cooperation that uses guide bar 8 and guide way 9, can remove movable block 6 effectively and lead, guarantee the stationarity that movable block 6 removed.

The inside swing joint of flange body 1 has bolt 2, and bolt 2 runs through flange body 1 swing joint has nut 3, is for the effect of carrying out the location installation to flange body 1 in order to make things convenient for through using bolt 2 cooperation nut 3.

The shape of movable block 6 is ring shape, the quantity of sealing washer 5 is a plurality ofly, a plurality of sealing washers 5 are the concentric circles design with movable block 6, play the effect of the convenient homogeneity that improves sealed atress, standing groove 11 is "protruding" font with the cross-section integrated shape of mounting groove 10, standing groove 11 is ring shape with the shape of mounting groove 10, play the effect of conveniently cooperating movable block 6, movable block 6 is the fluororubber material with the material of sealing washer 5 and makes, the sealed face of movable block 6 extends to the outside of standing groove 11.

The working principle is as follows: during the use, use 2 cooperation nuts 3 of bolt to carry out the location connection to flange body 1 simultaneously, through making the movable block 6 remove extrusion spring 7, the elasticity that spring 7 produced this moment advances line location clamp tightly to movable block 6, improves flange body 1's sealed effect.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a thin wall flange is connected to automobile exhaust blast pipe, includes flange body (1), its characterized in that: the exhaust pipe is characterized in that an exhaust pipe body (4) is fixedly connected to the outer side surface of the flange body (1), a placing groove (11) is formed in the inner side surface of the flange body (1), and a sealing mechanism is arranged inside the placing groove (11).

2. The thin-walled flange for connecting the exhaust pipes of the automobiles according to claim 1, characterized in that: sealing mechanism includes movable block (6), spring (7), sealing washer (5), mounting groove (10) have been seted up to the bottom of standing groove (11), spring (7) fixed connection is in the bottom of mounting groove (10), the bottom of mounting groove (10) and the installation face fixed connection of movable block (6) are kept away from in spring (7), the sealed face of movable block (6) is seted up flutedly, sealing washer (5) swing joint is in the inside of recess.

3. The thin-walled flange for connecting the exhaust pipes of the automobiles according to claim 2, characterized in that: guide way (9) have all been seted up to the bottom of standing groove (11) and the upper and lower side that is located mounting groove (10), the installation face of movable block (6) just is close to the equal fixedly connected with guide bar (8) of lower side edge, guide bar (8) extend to the inside of guide way (9).

4. The thin-walled flange for connecting the exhaust pipes of the automobiles according to claim 1, characterized in that: the flange is characterized in that bolts (2) are movably connected inside the flange body (1), and the bolts (2) penetrate through the flange body (1) and are movably connected with nuts (3).

5. The thin-walled flange for connecting the exhaust pipes of the automobiles according to claim 2, characterized in that: the shape of movable block (6) is the ring shape, the quantity of sealing washer (5) is a plurality of, and is a plurality of sealing washer (5) are the concentric design with movable block (6).

6. The thin-walled flange for connecting the exhaust pipes of the automobiles according to claim 1, characterized in that: the combined shape of the sections of the placing groove (11) and the mounting groove (10) is in a convex shape.

7. The thin-walled flange for connecting the exhaust pipes of the automobiles according to claim 1, characterized in that: the placing groove (11) and the mounting groove (10) are both circular rings.

8. The thin-walled flange for connecting the exhaust pipes of the automobiles according to claim 2, characterized in that: the movable block (6) and the sealing ring (5) are both made of fluororubber.