CN212950122U

CN212950122U - Novel preceding blast pipe lug that disappears

Info

Publication number: CN212950122U
Application number: CN202021844631.9U
Authority: CN
Inventors: 郭皓; 颜泽强; 李万强; 罗明财; 周纯彬
Original assignee: Chongqing Hengweilin Automotive Parts Co ltd
Current assignee: Chongqing Hengweilin Automotive Parts Co ltd
Priority date: 2020-08-29
Filing date: 2020-08-29
Publication date: 2021-04-13
Anticipated expiration: 2030-08-29

Abstract

A novel front exhaust pipe lifting lug comprises a columnar shell, wherein a rubber pipe is formed in the shell by filling rubber, and a nylon pipe is coaxially arranged in the rubber pipe and the shell; the shell comprises a connecting part and an arc cover which are of an integrated structure, and the inner diameter and the outer diameter of the arc cover are both larger than those of the connecting part; the nylon tube is in a round table shape. The utility model has the advantages that: 1. the inner tube does not take the flange design for the lug is more succinct in the die sinking production, and the drawing of patterns is more convenient to be favorable to improving the production efficiency of lug. 2. The shell is provided with a heat insulation structure, so that the heat insulation effect can be achieved, and the service life of the rubber part can be prolonged. 3. The application of the square flange screw enables the product assembly to be more stable and radial rotation is not easy to occur.

Description

Novel preceding blast pipe lug that disappears

Technical Field

The utility model relates to an automobile exhaust pipe accessories technical field, especially a novel preceding blast pipe lug that disappears.

Background

At present, a lifting lug of an automobile exhaust pipe is generally manufactured by a metal bracket and a surface protection, and is assembled with a rubber piece to support the weight of the exhaust pipe, isolate the transmission of the vibration of an exhaust system to a vehicle body bottom plate and reduce noise, wherein the metal bracket provides a rigid part, and the rubber provides a viscoelastic part. The lifting lug is rigidly connected with the vehicle body through a screw, is flexibly connected with the exhaust pipe through rubber, and realizes the flexible connection between the vehicle body and the exhaust pipe by taking the rubber as a medium. When vibration excitation of an engine and vibration excitation of contact between wheels and the ground are transmitted to the lifting lug, part of vibration can be absorbed through elasticity and high damping characteristics of rubber, so that the aim of shock absorption or vibration isolation is fulfilled, meanwhile, auxiliary materials in a certain proportion can be added, and the dynamic and static stiffness of the rubber is adjusted to meet the NVH adjustment and calibration requirements of the whole vehicle.

In the industry, the rubber pipe is generally composed of screws, an aluminum shell, a nylon inner pipe with a flange and rubber. In the manufacturing process of the lifting lug, the screw and the aluminum shell are assembled and then coated with glue, the nylon inner framework is coated with glue and then placed into a fixed mold cavity, rubber raw materials with certain auxiliary materials are injected, the rubber intermolecular structure is changed through high-temperature vulcanization, rubber becomes a certain shape and has specific dynamic and static rigidity characteristics, and the whole vehicle assembly is met while the damping or vibration isolation effect is achieved.

However, since the nylon inner pipe has a poor pressure-bearing capacity and is easily softened and deformed during the high-temperature vulcanization process, a flange needs to be added on the nylon inner pipe to increase the deformation resistance of the nylon inner pipe, and the production of the nylon inner pipe is further complicated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel preceding blast pipe lug that disappears has solved the lug difficulty of producing among the prior art, the whole technical problem who warp easily during the use.

A novel front exhaust pipe lifting lug comprises a columnar shell, wherein a rubber pipe is formed in the shell by filling rubber, and a nylon pipe is coaxially arranged in the rubber pipe and the shell;

the shell comprises a connecting part and an arc cover which are of an integrated structure, and the inner diameter and the outer diameter of the arc cover are both larger than those of the connecting part;

the rubber tube comprises an outer tube and inner tubes, the outer tube is matched with the inner wall of the outer shell, the inner tubes are sleeved in the outer tube at intervals, the outer wall of one end, facing the arc-shaped cover, of the inner tube is connected with the outer tube, and the length of the inner tube is smaller than that of the outer tube;

the nylon pipe is sleeved in the outer wall of the inner pipe, and one end of the nylon pipe, facing the arc-shaped cover, is flush with the end parts of the inner pipe, the outer pipe and the arc-shaped cover; the other end of the nylon tube extends into the inner tube and corresponds to the connecting position of the connecting part and the arc cover; the nylon tube is in a round table shape.

Further, the bottom of the connecting part is also provided with a screw mounting hole, and a screw is inserted into the screw mounting hole; the head of the screw is arranged to be a polygonal structure; and the top of the screw mounting hole is provided with a limiting groove in a corresponding shape.

Furthermore, the head of the screw is square, and the limiting groove is a square groove matched with the head of the screw.

Furthermore, the outside of the connecting part is provided with a heat insulation groove which is respectively positioned at the annular part at the upper side of the connecting part and the horizontal part at the bottom of the connecting part.

Furthermore, a positioning column is arranged on the side edge of the bottom of the connecting part.

Furthermore, the inner part of the inner pipe is provided with a plurality of fastening convex strips.

Further, the shell is made of aluminum alloy or nylon materials.

The utility model has the advantages that: 1. the nylon pipe does not take the flange design for the lug is more succinct in the die sinking production, and the drawing of patterns is more convenient to be favorable to improving the production efficiency of lug. 2. The shell is provided with a heat insulation structure, so that the heat insulation effect can be achieved, and the service life of the rubber part can be prolonged. 3. The application of the square flange screw enables the product assembly to be more stable and radial rotation is not easy to occur.

Drawings

FIG. 1 is a schematic view of the whole structure of a lifting lug;

FIG. 2 is a schematic diagram of an explosive structure of a lifting lug;

FIG. 3 is a cross-sectional structural view of the lifting lug;

FIG. 4 is a schematic view of a lifting lug skeleton structure without a rubber tube;

FIG. 5 is a schematic view of the housing;

FIG. 6 is a schematic structural view of a rubber tube;

in the figure, 1-shell, 2-rubber tube, 3-nylon tube, 4-screw, 11-connecting part, 12-arc cover, 13-screw mounting hole, 14-limiting groove, 15-heat insulation groove, 16-positioning column and 31-fastening convex strip.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic concept of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.

Example (b):

as shown in fig. 1 to 6, a novel front exhaust pipe lifting lug comprises a columnar shell 1, a rubber pipe 2 is formed in the shell 1 by filling rubber, and a nylon pipe 3 is coaxially arranged in the rubber pipe 2 and the shell 1;

the shell 1 comprises a connecting part 11 and an arc cover 12 which are of an integrated structure, wherein the inner diameter and the outer diameter of the arc cover 12 are both larger than those of the connecting part 11;

the rubber tube 2 comprises an outer tube 21 matched with the inner wall of the shell 1 and an inner tube 22 sleeved in the outer tube 21 at intervals, the outer wall of one end, facing the arc-shaped cover 12, of the inner tube 22 is connected with the outer tube 21, and the length of the inner tube is smaller than that of the outer tube;

the nylon tube 3 is sleeved in the outer wall of the inner tube 22, and one end of the nylon tube 3, which faces the arc-shaped cover 12, is flush with the end parts of the inner tube 22, the outer tube 21 and the arc-shaped cover 12; the other end of the nylon tube 3 extends into the inner tube 22 and corresponds to the connecting position of the connecting part 11 and the arc cover 12; the nylon tube 3 is in a round table shape. Through the nylon tube 3 who has the flange structure that will have now improving for the round platform shape nylon tube 3 of no flange form for the lug is more succinct in the die sinking production, and the drawing of patterns is more convenient is favorable to improving the production efficiency of lug.

The bottom of the connecting part 11 is also provided with a screw mounting hole 13, and a screw 4 is inserted into the screw mounting hole 13; the head of the screw 4 is arranged to be a polygonal structure; the top of the screw mounting hole 13 is provided with a correspondingly shaped limit groove 14. Preferably, the head of the screw 4 is square, and the limit groove 14 is a square groove matched with the head of the screw 4. The flange face of the head of the screw 4 is designed in a square shape, and is different from a round standard screw, the square screw mounting hole 13 on the shell 1 is used for increasing hard limit for the screw 4, so that the radial rotation prevention of the screw 4 is realized, and the assembly is more stable.

The connecting portion 11 is provided with a heat insulation groove 15 at the outside, which is respectively located at the upper annular portion of the connecting portion 11 and the horizontal portion of the bottom of the connecting portion 11. The structure of the heat insulation groove 151 arranged outside the connecting part 11 can achieve the heat insulation effect, and is beneficial to prolonging the service life of the rubber part.

The bottom side of the connecting part 11 is provided with a positioning column 16. The positioning column 16 is used for assisting the lifting lug to be integrally installed on the vehicle body.

The inner portion of the inner tube 22 is provided with a plurality of fastening ribs 31. Through set up fastening sand grip 31 at the inboard of inner tube 22 for the flexonics of blast pipe and automobile body is more firm, the shock attenuation of being convenient for.

The shell 1 is made of aluminum alloy or nylon materials.

The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. The utility model provides a novel preceding blast pipe lug that disappears which characterized in that: the rubber tube type rubber hose comprises a cylindrical shell (1), wherein a rubber tube (2) is formed in the shell (1) by filling rubber, and a nylon tube (3) is coaxially arranged in the rubber tube (2) and the shell (1);

the shell (1) comprises a connecting part (11) and an arc cover (12) which are of an integrated structure, and the inner diameter and the outer diameter of the arc cover (12) are both larger than those of the connecting part (11);

the rubber tube (2) comprises an outer tube (21) matched with the inner wall of the shell (1) and an inner tube (22) sleeved in the outer tube (21) at intervals, the outer wall of one end, facing the arc cover (12), of the inner tube (22) is connected with the outer tube (21), and the length of the inner tube is smaller than that of the outer tube;

the nylon pipe (3) is sleeved in the outer wall of the inner pipe (22), and one end of the nylon pipe (3) facing the arc-shaped cover (12) is flush with the end parts of the inner pipe (22), the outer pipe (21) and the arc-shaped cover (12); the other end of the nylon tube (3) extends into the inner tube (22) and corresponds to the connecting position of the connecting part (11) and the arc cover (12); the nylon tube (3) is in a circular truncated cone shape.

2. The novel front exhaust pipe lug as claimed in claim 1, wherein: the bottom of the connecting part (11) is also provided with a screw mounting hole (13), and a screw (4) is inserted into the screw mounting hole (13); the head of the screw (4) is arranged to be a polygonal structure; and the top of the screw mounting hole (13) is provided with a limiting groove (14) with a corresponding shape.

3. The novel front exhaust pipe lug as claimed in claim 2, wherein: the head of the screw (4) is square, and the limiting groove (14) is a square groove matched with the head of the screw (4).

4. The novel front exhaust pipe lug as claimed in claim 1, wherein: the heat insulation groove (15) is arranged outside the connecting part (11) and is respectively positioned at the annular part at the upper side of the connecting part (11) and the horizontal part at the bottom of the connecting part (11).

5. The novel front exhaust pipe lug as claimed in claim 1, wherein: and a positioning column (16) is arranged on the side edge of the bottom of the connecting part (11).

6. The novel front exhaust pipe lug as claimed in claim 1, wherein: the inner part of the inner pipe (22) is provided with a plurality of fastening convex strips (31).

7. The novel front exhaust pipe lug as claimed in claim 1, wherein: the shell (1) is made of aluminum alloy or nylon materials.