High-efficiency low-noise automobile muffler structure

Abstract

This invention discloses a high-efficiency, low-noise automotive muffler structure, comprising a housing divided into three parts: a left shell, a middle shell, and a right shell. These three shells are mutually abutting. A first partition is installed in the opening of the left shell, and a second partition is installed in the opening of the middle shell away from the left shell. Both the first and second partitions have multiple opposing through holes. A vent pipe is installed in each of the through holes of the second partition, with the other end of each vent pipe abutting against and communicating with a through hole in the first partition. Sound-absorbing cotton is fitted over the vent pipe. This invention has a simple structure. The cover and protective plate form a protective layer on the outside of the housing, reducing the probability of the housing being penetrated. The three-part housing design allows the middle shell to fall out directly, facilitating the removal of the internal sound-absorbing cotton and enabling internal cleaning, reducing internal carbonaceous ash and ensuring effective sound absorption.

Description

Technical Field

[0001] This invention relates to the field of automotive muffler technology, specifically to a high-efficiency, low-noise automotive muffler structure. Background Technology

[0002] The muffler and catalytic converter are part of the vehicle's emission system. The muffler's function is to eliminate the noise generated by the car engine. Once the vehicle leaves the factory, the muffler's acoustic performance cannot be changed. The current muffler manufacturing process requires assembling dozens of parts together by welding. The welded muffler cannot be disassembled. In order to increase the sound absorption effect, modern car mufflers install sound-absorbing cotton inside. However, after long-term use, the sound-absorbing cotton will age, break, and become hollow, resulting in a significant reduction in sound absorption effect. Furthermore, since most modern car mufflers are now integrated, the sound-absorbing cotton cannot be removed, thus affecting the sound absorption effect. At the same time, the bottom of modern car mufflers lacks a protective structure. After the chassis collides with protruding objects, the muffler shell is easily damaged, affecting its service life. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a high-efficiency and low-noise automotive muffler structure that increases the protection of the housing, and the middle shell can automatically shift after the protective plate is opened, which facilitates the cleaning of the interior and the replacement of the sound-absorbing cotton, so as to ensure the sound-absorbing effect.

[0004] This invention is achieved through the following technical solution: a high-efficiency, low-noise automotive muffler structure, comprising a housing, the housing being divided into three parts forming a left housing, a middle housing, and a right housing, the left housing, the middle housing, and the right housing being mutually abutting each other, a first partition plate being installed in the opening of the left housing, a second partition plate being installed in the opening of the middle housing away from the left housing, both the first and second partition plates having multiple oppositely arranged through holes, each of the through holes of the second partition plate having a vent pipe installed therein, the other end of each vent pipe abutting against the first partition plate and communicating with the through holes on the first partition plate, the vent pipe being covered with sound-absorbing cotton, the vent pipe being covered with sound-absorbing holes, and a cover being covered on the outside of the housing, the lower end of the cover having a protective plate installed on the open end face via a hinge.

[0005] As a preferred technical solution, an air outlet pipe is installed on the end face of the left shell away from the opening. One end face of the air outlet pipe abuts against the outer side of the second partition and is connected to a vent pipe on one side. The air outlet pipe and the connected vent pipe are combined to form an air outlet unit. An air inlet pipe is installed in the middle of the right shell. One end of the air inlet pipe is installed on the first partition and is connected to the vent pipe in the middle. The air inlet pipe and the connected vent pipe are combined to form an air inlet unit.

[0006] As a preferred technical solution, the inner surfaces of the protective plates all abut against the bottom surface of the housing, and the middle shell is restricted between the left and right shells by the protective plates. The top surfaces of the left and right shells are both installed on the inner wall surface of the cover. The bottom surfaces of the joints of the protective plates all protrude to form connecting parts. The connecting parts are arranged opposite each other on the left and right, and each connecting part is provided with a fixing hole. Fixing bolts are inserted into the opposite fixing holes, and a nut is threaded to one end of each fixing bolt. The fixing parts are locked and fixed by fixing bolts and nuts.

[0007] As a preferred technical solution, multiple first connecting grooves are vertically provided on both sides of the cover facing the middle shell. Connecting blocks are installed on both sides of the middle shell facing the first connecting grooves. The connecting blocks are slidably installed in the first connecting grooves. The lower end of each first connecting groove is open. The inner side of the protective plate is provided with a second connecting groove that matches the connecting block.

[0008] As a preferred technical solution, a support plate is installed near the second partition of the exhaust pipe and near the first partition of the intake pipe. The bottom surface of the support plate is installed on the inner wall of the housing. One side of the support plate on the exhaust pipe abuts against the outer side of the second partition, and one side of the support plate on the intake pipe abuts against the outer side of the first partition.

[0009] As a preferred technical solution, a rubber layer is installed on the open end face of the middle shell, with one side of the rubber layer abutting against the open end face of the left shell and the other side of the rubber layer abutting against the open end face of the right shell.

[0010] As a preferred technical solution, each end face of the vent pipe facing the first partition is provided with an annular mounting groove, and a rubber ring is installed in each mounting groove. One side of the rubber ring abuts against the outer wall of the first partition.

[0011] The beneficial effects of this invention are as follows: The invention has a simple structure. Through the cover and protective plate, a protective layer can be formed on the outside of the shell, which reduces the probability of the shell being penetrated when the car chassis is impacted, thus increasing safety. The shell is divided into three parts. Therefore, after the protective plate is opened, the middle shell can slide into the second connecting groove along the first connecting groove, so that the middle shell is misaligned with the left and right shells. The middle shell is directly set below the left and right shells, and the opening of the middle shell is in the open state, so that the internal sound-absorbing cotton can be directly removed, which is convenient for replacement and can also clean the inside, reducing the carbon ash inside, thus ensuring the sound absorption effect. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 This is a bottom view of the present invention;

[0015] Figure 3 This is a schematic diagram of the structure of the present invention after a portion of the cover has been removed;

[0016] Figure 4 This is a schematic diagram of the structure of the present invention after removing the upper half of the shell;

[0017] Figure 5 This is a schematic diagram of the installation structure of the vent pipe in this invention;

[0018] Figure 6 This is a schematic diagram of the structure of the intermediate shell of the present invention.

[0019] The components are as follows: 1. Shell; 2. Cover; 3. Exhaust pipe; 4. Intake pipe; 5. Protective plate; 6. Connecting part; 7. Second connecting groove; 8. First connecting groove; 9. Connecting block; 11. Left shell; 12. Middle shell; 13. Right shell; 14. First partition; 15. Second partition; 16. Support plate; 17. Sound-absorbing cotton; 18. Vent pipe; 19. Annular groove. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] All features disclosed in this specification, or steps in all methods or processes disclosed herein, may be combined in any way, except for mutually exclusive features and / or steps.

[0022] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0023] like Figures 1-6 As shown, the present invention discloses a high-efficiency, low-noise automotive muffler structure, comprising a housing 1, which is divided into three parts: a left housing 11, a middle housing 12, and a right housing 13. The left housing 11, the middle housing 12, and the right housing 13 are arranged in abutment to each other. A first partition 14 is installed in the opening of the left housing 13, and a second partition 15 is installed in the opening of the middle housing 12 away from the left housing 13. Both the first partition 14 and the second partition 15 are provided with multiple through holes arranged opposite to each other. A vent pipe 18 is installed in each of the through holes of the second partition 15. The other end of the vent pipe 18 abuts against the first partition 14 and is connected to the through holes on the first partition 14. The vent pipe 18 is covered with sound-absorbing cotton 17, and the outside of the vent pipe 18 is covered with sound-absorbing holes. A cover is covered on the outside of the housing 1, and a protective plate 5 is installed on the open end face of the lower end of the cover through a hinge.

[0024] In this embodiment, an exhaust pipe 3 is installed on the end face of the left shell 11 away from the opening. One end face of the exhaust pipe 3 abuts against the outer side of the second partition 15 and is connected to the ventilation pipe 18 on one side. The exhaust pipe 3 and the connected ventilation pipe 18 are combined to form an exhaust unit. An intake pipe 4 is installed in the middle of the right shell 13. One end of the intake pipe 4 is installed on the first partition 14 and is connected to the ventilation pipe 18 in the middle. The intake pipe 4 and the connected ventilation pipe 18 are combined to form an intake unit. Exhaust gas enters the interior of the shell through the intake unit and enters the exhaust unit through the remaining ventilation pipe until it is discharged. The interior of the shell is divided into multiple chambers by the first partition and the second partition. Exhaust gas reflects and interferes with each other (friction) in these chambers to achieve a noise reduction effect. During the process of exhaust gas entering the chamber, it passes through sound-absorbing cotton. The sound-absorbing cotton can effectively absorb noise, thereby achieving a double noise reduction function.

[0025] In this embodiment, the inner surfaces of the protective plates 5 all abut against the bottom surface of the housing 1, and the middle housing 12 is restricted between the left housing 11 and the right housing 13 by the protective plates 5. The top surfaces of the left housing 11 and the right housing 13 are all installed on the inner wall surface of the cover 2. The bottom surfaces of the joints of the protective plates 5 all protrude to form connecting parts 6. The connecting parts 6 are arranged opposite each other on the left and right, and each connecting part 6 is provided with a fixing hole. Fixing bolts are inserted into the opposite fixing holes, and a nut is threaded to one end of each fixing bolt. The fixing parts are locked and fixed by fixing bolts and nuts.

[0026] In this embodiment, multiple first connecting grooves 8 are vertically provided on both sides of the cover 2, directly opposite the middle shell 12. Connecting blocks 9 are installed on both sides of the middle shell 12, directly opposite the first connecting grooves 8. The connecting blocks 9 are slidably installed in the first connecting grooves 8. The lower end of the first connecting grooves 8 is open. The inner side of the protective plate 5 is provided with second connecting grooves 7 that match the connecting blocks 9, directly opposite the first connecting grooves 8.

[0027] In order to increase the robustness of the intermediate shell, a first screw hole is provided on the outer side of the cover opposite the connecting block, and a second screw hole is provided on the outer side of the connecting block. Screws are threaded into the corresponding first and second screw holes, and the intermediate shell can be fixed by the screws.

[0028] In this embodiment, support plates 16 are installed near the second partition 15 on the exhaust pipe 3 and near the first partition 14 on the intake pipe 4. The bottom surface of the support plates 16 is installed on the inner wall of the housing 1. One side of the support plate 16 on the exhaust pipe 3 abuts against the outer side of the second partition 15, and one side of the support plate 16 on the intake pipe 4 abuts against the outer side of the first partition 14. The support plates can fix one end of the intake pipe and the exhaust pipe, increasing stability. In addition, the support plates increase the contact area between the exhaust pipe and the first partition and the second partition, so that the exhaust pipe can abut against the second partition tightly.

[0029] In this embodiment, a rubber layer is installed on the open end face of the intermediate shell 12. One side of the rubber layer abuts against the open end face of the left shell 11, and the other side of the rubber layer abuts against the open end face of the right shell 13. The rubber layer increases the sealing between the intermediate shell and the left shell, and between the intermediate shell and the right shell.

[0030] In this embodiment, an annular mounting groove is provided on the end face of the vent pipe 18 facing the first partition 14. A rubber ring is installed in the mounting groove. One side of the rubber ring abuts against the outer wall of the first partition 14. The rubber ring increases the sealing between the vent pipe and the first partition.

[0031] The outer side of the first partition is flush with the opening end face of the left shell, and the outer side of the second partition is flush with the opening end face of the right side of the middle shell, so that the middle shell can pass smoothly between the left and right shells.

[0032] The cover and protective plate form a protective layer on the outside of the shell. When the car chassis is hit, it will first come into contact with the protective plate. The thickness of the protective layer reduces the probability of the shell being penetrated, thus increasing safety.

[0033] The housing is divided into three parts. When the sound-absorbing cotton needs to be replaced, the nuts need to be unscrewed and the fixing bolts removed. After the locking force of the fixing bolts is released, the protective plate can be opened around the hinge until the opposite end face of the protective plate abuts against the opening end face of the cover, and the second connecting groove is connected to the first connecting groove. At this time, the middle shell can slide into the second connecting groove along the first connecting groove until the bottom surface of the connecting block abuts against the bottom surface of the second connecting groove, so that the middle shell is misaligned with the left and right shells. The middle shell is directly set below the left and right shells, and the opening of the middle shell is in the open state, so that the internal sound-absorbing cotton can be directly removed, which is convenient for replacement and can also be cleaned inside to reduce the carbon ash inside, thus ensuring the sound absorption effect.

[0034] After the above is completed, the middle shell can be lifted again, allowing it to re-enter between the left and right shells. The connecting block then slides back into the first connecting groove, and the protective plate can be lifted upwards again and rest against the bottom surface of the shell.

[0035] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A high-efficiency, low-noise automotive muffler structure, characterized in that: The enclosure includes a shell (1), which is divided into three parts: a left shell (11), a middle shell (12), and a right shell (13). The left shell (11), the middle shell (12), and the right shell (13) are arranged in abutment to each other. A first partition (14) is installed in the opening of the left shell (11), and a second partition (15) is installed in the opening of the middle shell (12) away from the left shell (11). Both the first partition (14) and the second partition (15) are provided with multiple opposing... The through holes of the second partition (15) are all equipped with vent pipes (18). The other end of each vent pipe (18) abuts against the first partition (14) and is connected to the through hole on the first partition (14). The outside of the vent pipe (18) is covered with sound-absorbing cotton (17). The outside of the vent pipe (18) is covered with sound-absorbing holes. The outside of the shell (1) is covered with a cover. The opening end face of the lower end of the cover is equipped with a protective plate (5) through a hinge. The inner surfaces of the protective plates (5) all abut against the bottom surface of the shell (1), and the middle shell (12) is restricted between the left shell (11) and the right shell (13) by the protective plates (5). The top surfaces of the left shell (11) and the right shell (13) are all installed on the inner wall surface of the cover (2). The bottom surfaces of the joints of the protective plates (5) all protrude to form connecting parts (6). The connecting parts (6) are arranged opposite each other on the left and right, and each connecting part (6) is provided with a fixing hole. A fixing bolt is inserted into the opposite fixing hole. One end of the fixing bolt is threaded with a nut. The fixing parts are locked and fixed by fixing bolts and nuts. The outer surface of the first partition is flush with the opening end face of the left shell, and the outer surface of the second partition is flush with the opening end face of the right side of the middle shell.

2. The high-efficiency, low-noise automotive muffler structure according to claim 1, characterized in that: An air outlet pipe (3) is installed on the end face of the left shell (11) away from the opening. One end face of the air outlet pipe (3) abuts against the outer side of the second partition (15) and is connected to the ventilation pipe (18) on one side. The air outlet pipe (3) and the connected ventilation pipe (18) are combined to form an air outlet unit. An air inlet pipe (4) is installed in the middle of the right shell (13). One end of the air inlet pipe (4) is installed on the first partition (14) and is connected to the ventilation pipe (18) in the middle. The air inlet pipe (4) and the connected ventilation pipe (18) are combined to form an air inlet unit.

3. The high-efficiency, low-noise automotive muffler structure according to claim 1, characterized in that: Multiple first connecting grooves (8) are vertically provided on both sides of the cover (2) facing the middle shell (12). Connecting blocks (9) are installed on both sides of the middle shell (12) facing the first connecting grooves (8). The connecting blocks (9) are slidably installed in the first connecting grooves (8). The lower end of the first connecting grooves (8) is open. The inner side of the protective plate (5) is provided with second connecting grooves (7) that match the connecting blocks (9) facing the first connecting grooves (8).

4. The high-efficiency, low-noise automotive muffler structure according to claim 2, characterized in that: Support plates (16) are installed on the air outlet pipe (3) near the second partition (15) and the air inlet pipe (4) near the first partition (14). The bottom surface of the support plates (16) is installed on the inner wall of the housing (1). One side of the support plate (16) on the air outlet pipe (3) abuts against the outer side of the second partition (15), and one side of the support plate (16) on the air inlet pipe (4) abuts against the outer side of the first partition (14).

5. The high-efficiency, low-noise automotive muffler structure according to claim 1, characterized in that: A rubber layer is installed on the open end face of the middle shell (12). One side of the rubber layer abuts against the open end face of the left shell (11), and the other side of the rubber layer abuts against the open end face of the right shell (13).

6. The high-efficiency, low-noise automotive muffler structure according to claim 1, characterized in that: The ventilation pipe (18) is provided with an annular mounting groove on one end face facing the first partition (14), and a rubber ring is installed in the mounting groove. One side of the rubber ring abuts against the outer wall of the first partition (14).

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