Exhaust pipe with protection function

Abstract

The utility model relates to the technical field of exhaust pipes, and discloses an exhaust pipe with a protection function, which comprises a protection structure sleeved on the periphery of the exhaust pipe, the protection structure comprises an upper protection shell and a lower protection shell which are positioned on the lower side and the upper side of the exhaust pipe, upper wing plates are arranged on the two sides of the upper protection shell, and lower wing plates are arranged on the two sides of the lower protection shell. A vertical buffering assembly is arranged between the upper wing plate and the lower wing plate and comprises a connecting rod fixedly connected with the upper wing plate, the connecting rod penetrates through the lower wing plate in the vertical direction, a limiting block is arranged at the bottom of the connecting rod, and the vertical buffering assembly further comprises a first spring arranged between the upper wing plate and the lower wing plate. By arranging a protection structure, an upper protection shell and a lower protection shell can block splashed broken stones, and the broken stones are prevented from damaging the exhaust pipe; the lower protective shell moves upwards in the vertical direction under the action of external force, the lower protective shell is buffered through the elastic force of the spring, the impact action time is prolonged, and the external force peak value is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of exhaust pipe technology, and specifically relates to an exhaust pipe with protective function. Background Technology

[0002] The exhaust pipe is an important part of the exhaust system of a car, mainly including the front pipe, muffler, rear pipe and tailpipe, etc. Its main function is to expel the exhaust gas generated in the engine, reduce noise and purify pollutants.

[0003] Existing car exhaust pipes are usually exposed on the bottom of the chassis. On the one hand, during the car's operation, gravel and sand on the road surface are splashed by the wheels. Some of the splashed gravel will hit the exhaust pipe (especially the bottom of the exhaust pipe), causing local dents and deformations. In severe cases, it can damage the exhaust pipe and affect the normal operation of the exhaust system.

[0004] On the other hand, when driving on unpaved roads, protrusions such as dirt mounds, stones, and tree stumps will inevitably come into contact with the exhaust pipe, which can also cause deformation and damage to the exhaust pipe. In addition, because the exhaust pipe operates at a high temperature, the high temperature of the exhaust pipe will bake nearby wiring harnesses, oil lines, brake lines, air conditioning pipes, body parts, interior parts, etc., accelerating their aging, deformation, or even damage. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide an exhaust pipe with protective function to solve the technical problem of exhaust pipes lacking protection and thus deforming and being damaged in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An exhaust pipe with protective function includes a protective structure sleeved around the exhaust pipe. The protective structure includes an upper protective shell and a lower protective shell located on the upper and lower sides of the exhaust pipe, with a gap between the upper and lower protective shells. Upper wing plates are provided on both sides of the outer arc surface of the upper protective shell, and lower wing plates are provided on both sides of the outer arc surface of the lower protective shell. A vertical buffer assembly is provided between the upper and lower wing plates. The vertical buffer assembly includes a connecting rod fixedly connected to the upper wing plate, which passes through the lower wing plate vertically. A limiting block is provided at the bottom of the connecting rod, and the limiting block abuts against the bottom surface of the lower wing plate. The vertical buffer assembly also includes a first spring disposed between the upper and lower wing plates, which is sleeved around the connecting rod. An axial buffer assembly is provided on the bottom surface of the lower protective shell, and an installation groove is opened on the bottom surface of the lower protective shell. The axial buffer assembly includes a slider slidably connected to the lower protective shell, which slides axially within the installation groove. A second spring is provided between the slider and the wall of the installation groove.

[0008] Furthermore, multiple connecting holes are provided on the lower wing plate, and the connecting rod passes through the connecting holes in the vertical direction until the bottom surface of the connecting rod coincides with the bottom surface of the lower wing plate;

[0009] Furthermore, the bottom of the mounting groove is provided with multiple "T"-shaped sliding grooves spaced circumferentially, and the inner side of the slider is provided with "T"-shaped sliding protrusions that are adapted to the sliding grooves.

[0010] Furthermore, ventilation holes are provided on the lower protective shell, and the ventilation holes are distributed between the sliding grooves;

[0011] Furthermore, the thickness of the slider is consistent with the depth of the mounting groove, that is, the outer side of the slider coincides with the outer side of the lower protective shell, the length of the slider is less than the length of the mounting groove, and the two sides of the slider in the circumferential direction are in contact with the side wall of the mounting groove.

[0012] The beneficial effects of this utility model are as follows:

[0013] (1) Compared with the prior art, by setting up a protective structure, when road gravel is compressed and splashed, the upper and lower protective shells can block the splashed gravel and prevent the gravel from damaging the exhaust pipe; when encountering unpaved road surface, the lower protective shell is in direct contact with soil piles, stones and other protrusions, thereby preventing the exhaust pipe from being damaged. In addition, the lower protective shell is displaced vertically upward under the action of external force, and the first spring is compressed. The spring force buffers the lower protective shell, prolongs the impact time, reduces the peak value of external force, and protects the upper protective shell and the chassis of the vehicle.

[0014] (2) By setting an axial buffer assembly on the bottom surface of the lower protective shell, the external force in the axial direction can be buffered, and the peak value of the external force can be reduced to a certain extent;

[0015] (3) By opening a cavity in the upper protective shell and filling the cavity with ceramic fiber, a physical barrier can be formed between the exhaust pipe and the sensitive component, reflecting heat and using the air layer for heat insulation, thereby improving the stability of the sensitive component and extending its service life. Attached Figure Description

[0016] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:

[0017] Figure 1 This is an overall schematic diagram of the exhaust pipe with protective function in Embodiment 1 of this utility model;

[0018] Figure 2 This is a top view of the exhaust pipe with protective function in Embodiment 1 of this utility model;

[0019] Figure 3 for Figure 1 Enlarged view at point A1;

[0020] Figure 4 for Figure 2 Sectional view along the middle AA direction;

[0021] Figure 5 for Figure 4 Enlarged view at point A3;

[0022] Figure 6 for Figure 1 Enlarged view of section A2 in the middle.

[0023] The following labels are shown in the attached diagram:

[0024] Exhaust pipe 1, protective structure 2, upper protective shell 201, lower protective shell 202, upper wing plate 203, lower wing plate 204, connecting rod 205, limiting block 2051, first spring 206, mounting groove 207, slider 208, sliding groove 209, sliding protrusion 210, second spring 211, corrugated steel sheet 212, ventilation hole 213, cavity 3. Detailed Implementation

[0025] Example 1, specifically as follows: Figures 1-6 As shown.

[0026] An exhaust pipe with protective function includes a protective structure 2 that is sleeved around the exhaust pipe 1, and the exhaust pipe 1 is physically protected by the protective structure 2.

[0027] like Figure 1 As shown, the protective structure 2 includes an upper protective shell 201 and a lower protective shell 202 located on the upper and lower sides of the exhaust pipe 1 and distributed in a mirror image. There is a gap between the upper protective shell 201 and the lower protective shell 202, and both have arc-shaped cross-sections. The upper protective shell 201 is fixedly connected to the vehicle chassis, and the connection method can be bolted or welded.

[0028] The upper protective shell 201 has horizontal upper wing plates 203 on both sides of its outer arc surface. The upper wing plates 203 extend along the length of the upper protective shell 201 and are welded to the upper protective shell 201. The lower protective shell 202 has horizontal lower wing plates 204 on both sides of its outer arc surface. The lower wing plates 204 are integrally formed with the lower protective shell 202. The upper wing plates 203 and the lower wing plates 204 are directly opposite each other and there is a gap between them.

[0029] A vertical buffer assembly is provided between the upper wing plate 203 and the lower wing plate 204, and the upper protective shell 201 and the lower protective shell 202 are connected through the vertical buffer assembly. Figure 1 , Figure 3As shown, the vertical buffer assembly includes connecting rods 205 spaced apart along the length of the bottom surface of the upper wing plate 203. The connecting rods 205 are welded and fixed to the upper wing plate 203. Multiple circular connecting holes are provided on the lower wing plate 204. The connecting rods 205 pass through the connecting holes vertically until their bottom surfaces coincide with the bottom surfaces of the lower wing plate 204. A limiting block 2051 is provided at the bottom of the connecting rods 205, and the limiting block 2051 abuts against the bottom surface of the lower wing plate 204. The lower protective shell 202 is slidably connected to the connecting rods 205, meaning the lower protective shell 202 can undergo relative displacement with respect to the upper protective shell 201 in the vertical direction.

[0030] The vertical buffer assembly also includes a first spring 206 disposed between the upper wing plate 203 and the lower wing plate 204. The first spring 206 is sleeved around the connecting rod 205 and corresponds one-to-one with the connecting rod 205. Specifically, the first spring 206 extends vertically, its upper end is welded and fixed to the bottom surface of the upper wing plate 203, and its lower end is welded and fixed to the top surface of the lower wing plate 204.

[0031] During driving, when road debris is compressed and splashed, the upper protective shell 201 and the lower protective shell 202 can block the splashed debris and prevent it from damaging the exhaust pipe 1. When encountering unpaved roads, the lower protective shell 202 comes into direct contact with soil piles, stones and other protrusions, thereby preventing the exhaust pipe 1 from being damaged. In addition, under the action of external force, the lower protective shell 202 moves vertically upward and the first spring 206 is compressed. The spring force buffers the lower protective shell 202, prolongs the impact time, reduces the peak value of the external force, and protects the upper protective shell 201 and the chassis of the vehicle.

[0032] However, in actual use, the direction of the external force on the lower protective shell 202 changes. The external force is decomposed into vertical and horizontal directions. The vertical component passes through the vertical buffer component, while the horizontal component lacks buffering.

[0033] Based on this, an axial buffer assembly is provided on the bottom surface of the lower protective shell 202. It should be noted that, in this article, "axial" refers to the axial direction of the upper protective shell 201. Figure 6As shown, the bottom surface of the lower protective shell 202 has an arc-shaped mounting groove 207. The axial buffer assembly includes a slider 208 that is slidably connected to the lower protective shell 202. The slider 208 slides axially within the mounting groove 207. Specifically, the thickness of the slider 208 is the same as the depth of the mounting groove 207, meaning the outer surface of the slider 208 coincides with the outer surface of the lower protective shell 202. The length of the slider 208 is less than the length of the mounting groove 207. The two circumferential sides of the slider 208 contact the sidewalls of the mounting groove 207. Multiple "T"-shaped grooves 209 are spaced circumferentially along the bottom of the mounting groove 207. "T"-shaped sliding protrusions 210, adapted to the grooves 209, are welded to the inner surface of the slider 208. The sliding connection between the slider 208 and the lower protective shell 202 is achieved through the grooves 209 and the sliding protrusions 210, and the slider 208 is limited to prevent it from detaching from the lower protective shell 202.

[0034] The axial buffer assembly also includes a second spring 211 disposed between the slider 208 and the wall of the mounting groove 207, such as Figure 6 As shown, the second spring 211 is located within the mounting groove 207 and distributed circumferentially. The extension direction of the second spring 211 is consistent with the sliding direction of the slider 208. One end of the second spring 211 is welded and fixed to the end face of the slider 208, and the other end of the second spring 211 is welded and fixed to the groove wall of the mounting groove 207. A corrugated steel sheet 212 is provided on the outer side of the second spring 211. The corrugated steel sheet 212 seals the gap between the slider 208 and the mounting groove 207, preventing external impurities from entering the mounting groove 207 while protecting the second spring 211 within the mounting groove 207.

[0035] By setting an axial buffer component on the bottom surface of the lower protective shell 202, the external force in the axial direction can be buffered, thereby reducing the peak value of the external force to a certain extent and protecting the lower protective shell 202 and the vehicle chassis.

[0036] In order to ensure the heat dissipation of the protective structure 2, ventilation holes 213 are provided on the lower protective shell 202. The ventilation holes 213 are distributed between the slide grooves 209. During the driving process, the heat generated by the exhaust pipe 1 is discharged through the ventilation holes 213 under the action of wind, thereby dissipating heat from the exhaust pipe 1.

[0037] Considering the high operating temperature of the exhaust pipe, which could bake nearby sensitive components such as wiring harnesses and oil pipes, accelerating their aging, deformation, or even damage, a cavity 3 is provided inside the upper protective shell 201, filled with ceramic fibers. This forms a physical barrier between the exhaust pipe and the sensitive components, reflecting heat and utilizing an air layer for insulation, thereby improving the stability of the sensitive components and extending their service life.

[0038] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. An exhaust pipe with protective function, characterized in that, The system includes a protective structure fitted around the exhaust pipe. The protective structure comprises an upper protective shell and a lower protective shell located on the upper and lower sides of the exhaust pipe, with a gap between them. Upper protective shells have upper wing plates on both sides of their outer arc surface, and lower protective shells have lower wing plates on both sides of their outer arc surface. A vertical buffer assembly is provided between the upper and lower wing plates. The vertical buffer assembly includes a connecting rod fixedly connected to the upper wing plate, which passes vertically through the lower wing plate. A limiting block is provided at the bottom of the connecting rod, abutting against the bottom surface of the lower wing plate. The vertical buffer assembly also includes a first spring disposed between the upper and lower wing plates, fitted around the connecting rod. An axial buffer assembly is provided on the bottom surface of the lower protective shell, with a mounting groove on the bottom surface. The axial buffer assembly includes a slider slidably connected to the lower protective shell, which slides axially within the mounting groove. A second spring is provided between the slider and the groove wall.

2. The exhaust pipe with protective function according to claim 1, characterized in that, Multiple connecting holes are provided on the lower wing plate. The connecting rod passes through the connecting holes vertically until the bottom surface of the connecting rod coincides with the bottom surface of the lower wing plate.

3. The exhaust pipe with protective function according to claim 1, characterized in that, The mounting groove has multiple "T"-shaped grooves spaced circumferentially along its bottom edge, and the inner side of the slider has "T"-shaped sliding protrusions that match the grooves.

4. The exhaust pipe with protective function according to claim 3, characterized in that, Ventilation holes are provided on the lower protective shell and are distributed between the sliding grooves.

5. The exhaust pipe with protective function according to claim 4, characterized in that, The thickness of the slider is consistent with the depth of the mounting groove, that is, the outer side of the slider coincides with the outer side of the lower protective shell, the length of the slider is less than the length of the mounting groove, and the two sides of the slider in the circumferential direction are in contact with the side wall of the mounting groove.

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