CN219953475U

CN219953475U - Automobile muffler

Info

Publication number: CN219953475U
Application number: CN202321479594.XU
Authority: CN
Inventors: 姜涛
Original assignee: Ningbo Xinxin Precision Technology Co ltd
Current assignee: Ningbo Xinxin Precision Technology Co ltd
Priority date: 2023-06-12
Filing date: 2023-06-12
Publication date: 2023-11-03
Anticipated expiration: 2033-06-12

Abstract

The utility model discloses an automobile silencer, which comprises an outer shell and an end cover which is detachably clamped at a port of the outer shell, wherein the outer shell comprises a first shell and a second shell, the inner side surface of the first shell is fixedly connected with a first semicircular plate, the inner side surface of the second shell is fixedly connected with a second semicircular plate, a plurality of first clamping notches are formed in the flat side surface of the first semicircular plate, a butt joint hole is formed in the flat side surface of the first semicircular plate at the gap between the two first clamping notches, and a sound attenuation mechanism is arranged.

Description

Automobile muffler

Technical Field

The utility model relates to the technical field of automobile parts, in particular to an automobile muffler.

Background

The automobile silencer is one important part of automobile exhaust system and is used mainly in reducing noise produced during the operation of motor vehicle engine.

The current car muffler commonly used has circuitous muffler and straight-through muffler, because circuitous muffler amortization effect is better, but the route of exhaust flow is complicated, can cause the problem that the back pressure is big, directly influences the stability and the life of muffler's amortization performance and be unfavorable for clean, change, and straight-through muffler is because of the exhaust route is simple smooth and easy, and although the back pressure is little and do benefit to high-speed exhaust, nevertheless make exhaust sound absorbing capacity not good and the noise is great.

Therefore, the automobile muffler is smooth in exhaust, high in sound absorption performance and convenient to clean and replace.

Disclosure of Invention

The utility model aims to provide an automobile muffler, which solves the problems that the exhaust path is complex, the stability of exhaust, cleaning and silencing performance is poor and the silencing performance is low due to the fact that the exhaust path is simple in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an automobile muffler, includes shell and detachable joint at the end cover of shell port, the shell is including first shell and second shell, the medial surface fixedly connected with first semicircle board of first shell, the medial surface fixedly connected with second semicircle board of second shell, the first joint notch of a plurality of is seted up to the flat side of first semicircle board, the butt joint hole has been seted up to the flat side of first semicircle board in the clearance department of two first joint notches, the second joint notch of a plurality of is seted up to the flat side of second semicircle board, the flat side of second semicircle board is located the clearance department fixedly connected with butt joint screw thread post of two second joint notches, the concave surface roughness setting of first joint notch and second joint notch, joint has outlet duct, intake pipe, runner pipe between first joint notch respectively, the inside of shell is provided with two sets of first semicircle boards and second semicircle board and divide into three cavity with the inside of shell, intake duct, the upper side of runner pipe, the inside duct, the inside of the runner pipe all are provided with the cone of sound reducing mechanism;

the sound reducing mechanism comprises a bowl body fixedly connected to the inner side wall of the air outlet pipe, the air inlet pipe and the bowl body on the inner side wall of the air inlet pipe, wherein three bowl bodies are arranged on the inner side wall of the air outlet pipe and the air inlet pipe, the bowl bodies are respectively a first bowl body, a second bowl body and a third bowl body, one bowl body on the inner side wall of the air inlet pipe is a fourth bowl body, and concave surfaces of the first bowl body, the second bowl body, the third bowl body and the fourth bowl body extend out of one end of the end cover towards the air inlet pipe.

Preferably: the end cover and end cover sliding connection are stretched out to the one end of outlet duct, the one end of intake pipe stretches out the end cover of shell body other end and with end cover sliding connection, the intake pipe is located the central zone of end cover, the outlet duct is located the marginal zone of end cover, the butt joint screw thread post stretches into in the butt joint hole and runs through first shell, the outside department threaded connection that the butt joint screw thread post is located first shell has fastening nut.

Preferably: the inside of the rotor pipe is located the cotton post of inhaling of having all been placed in fourth bowl body both sides department, inhale the cotton post of inhaling and all fixedly connected with U type of one side towards rotor pipe opening part and draw the frame, the both ends bore of rotor pipe is narrowed, inhale the diameter of inhaling under the cotton post of inhaling the state and be greater than the bore of rotor pipe both ends mouth department.

Preferably: the sound leakage ports formed in the first bowl body, the second bowl body and the third bowl body are not communicated with each other in the transverse direction except for the central sound leakage port, and the projection of the first bowl body, the second bowl body and the third bowl body which are mutually overlapped is identical to the projection of the fourth bowl body.

Preferably: the opening direction of the side cone arranged on the inner side wall of the air outlet pipe and the air inlet pipe extends out of one end of the end cover towards the air inlet pipe, and the opening direction of the side cone arranged on the inner side wall of the rotor pipe extends out of one end of the end cover towards the air outlet pipe.

Preferably: the three chambers inside the outer shell are a first chamber, a second chamber and a third chamber from left to right, two ends of the air inlet pipe are respectively positioned in the outer part and the third chamber of the outer shell, two ends of the air outlet pipe are respectively positioned in the outer part of the first chamber and the outer shell, and two ends of the rotating pipe are respectively positioned in the first chamber and the third chamber.

Compared with the prior art, the utility model has the beneficial effects that:

1. the arrangement of the sound attenuation mechanism utilizes that the sound leakage openings formed on the first bowl body, the second bowl body and the third bowl body are not communicated with each other in the transverse direction except for the central sound leakage opening, so that the collision between the air flow and the bowl body is increased, the sound energy loss of the air flow is greatly improved, and the air flow can more easily flow into the rotating direction in the side cone body and flow out due to the arrangement of the side cone body and the direction of the opening of the side cone body, the contact area between the air flow and the side cone body is increased, the sound energy is reduced due to the friction between the air flow and the side cone body, and the reduction and the elimination of the air flow noise are realized;

2. through the arrangement of the two groups of second semicircular plates and the first semicircular plates, the inside of the outer shell is divided into three chambers by utilizing the second semicircular plates and the first semicircular plates, and the arrangement of the air inlet pipe, the air outlet pipe and the rotating pipe is matched, so that the back and forth flow of air in the outer shell is successfully controlled, the consumption of sound energy is further increased, and the silencing performance of the device is greatly improved;

3. through the setting of first shell, second shell, U type draw frame etc. for the user can be simple and convenient will unpack apart or will inhale the cotton post of sound and take out in the runner pipe, realize the inside cleanness of shell or to inhaling the clean or the change of cotton post of sound, the structure sets up succinctly, high-efficient, is convenient for assemble and clean, makes the convenience of this device routine maintenance obtain improving, very big improvement the stability of life and the amortization performance of this device.

Drawings

FIG. 1 is an overall structural view of the present utility model;

FIG. 2 is a view showing the internal structure of the outer case according to the present utility model;

FIG. 3 is a cross-sectional view of the present utility model;

FIG. 4 is a structural view of a second half-disk and a first half-disk in the present utility model;

fig. 5 is a structural view of the bowl according to the present utility model.

In the figure: 1. an outer housing; 101. an end cap; 2. an air inlet pipe; 201. an air outlet pipe; 202. a transfer tube; 3. a first semicircular plate; 301. a first clamping notch; 302. a second semicircular plate; 303. a second clamping notch; 304. butting threaded columns; 305. a butt joint hole; 306. a fastening nut; 4. a sound-absorbing cotton column; 401. a U-shaped drawing frame; 5. a lateral vertebral body; 6. a bowl body; 601. a first bowl; 602. a second bowl; 603. a third bowl; 7. and a fourth bowl body.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 5, the present utility model provides a technical solution of an automobile muffler:

the utility model provides an automobile muffler, including shell body 1 and detachable joint at the end cover 101 of shell body 1 port, shell body 1 is including first shell and second shell, the medial surface fixedly connected with first semicircle board 3 of first shell, the medial surface fixedly connected with second semicircle board 302 of second shell, a plurality of first joint notch 301 has been seted up to the even side of first semicircle board 3, the butt joint hole 305 has been seted up to the interval department that the even side of first semicircle board 3 is located two first joint notches 301, a plurality of second joint notch 303 has been seted up to the even side of second semicircle board 302, the even side of second semicircle board 302 is located the interval department fixedly connected with butt joint screw thread post 304 of two second joint notches 303, the concave surface roughness setting of first joint notch 301 and second joint notch 303, joint has 201 between first joint notch 301 and the second joint notch 303 respectively, intake pipe 2, the runner pipe 202, the inside of shell body 1 is provided with two sets of first semicircle board 3 and second semicircle board 302 and divides the inside of shell body 1 into three outlet duct chambers, intake pipe 2, the inside of runner pipe 202, the inside wall 201 is provided with in the equal side of the runner pipe 2, the inside wall 201, the inside of the inside wall of the exhaust duct is reduced.

Wherein, the sound reduction mechanism includes the bowl body 6 of fixed connection on outlet duct 201, intake pipe 2, runner 202 inside wall, and the bowl body 6 on outlet duct 201 and the intake pipe 2 inside wall is provided with three, is first bowl body 601, second bowl body 602, third bowl body 603 respectively, and the bowl body 6 on the runner 202 inside wall is provided with one, is fourth bowl body 7, and the concave surface of first bowl body 601, second bowl body 602, third bowl body 603, fourth bowl body 7 all stretches out the one end of end cover 101 towards intake pipe 2.

The arrangement of the sound attenuation mechanism utilizes that the sound leakage openings formed on the first bowl body 601, the second bowl body 602 and the third bowl body 603 are not communicated with each other in the transverse direction except for the central sound leakage opening, so that the collision between the air flow and the bowl body 6 is increased, the sound energy loss of the air flow is greatly improved, and the air flow is easier to rush into the rotating direction of the side cone body 5 and then flows out due to the arrangement of the side cone body 5 and the opening direction of the side cone body 5, the contact area between the air flow and the side cone body 5 is increased, the sound energy is reduced due to the friction between the air flow and the side cone body 5, and the attenuation and the elimination of the air flow noise are realized.

Further, end cover 101 and end cover 101 sliding connection are stretched out to the one end of outlet duct 201, the end cover 101 of shell body 1 other end and with end cover 101 sliding connection are stretched out to the one end of intake pipe 2, intake pipe 2 is located the central region of end cover 101, outlet duct 201 is located the marginal zone of end cover 101, butt joint screw thread post 304 stretches into butt joint hole 305 and runs through first shell, butt joint screw thread post 304 is located the outside department threaded connection of first shell has fastening nut 306, the inside of rotor pipe 202 is located the equal projection of fourth bowl body 7 both sides department and has all been placed and inhale the cotton post 4 of sound, inhale the equal fixedly connected with U type and draw frame 401 of one side of cotton post 4 orientation rotor pipe 202 opening part, the bore of both ends of rotor pipe 202 is narrowed, inhale the diameter under the cotton post 4 of sound is greater than the bore of rotor pipe 202 both ends mouth department in the state, first bowl body 601, second bowl body 602, leak the sound mouth offered on the third bowl body 603 is not in horizontal intercommunication each other except that center leak sound mouth, first bowl body 601, second bowl body 602, third bowl body 603 each other the projection of overlapping with fourth bowl body 7, the inside of rotor pipe 202 is the same, the inside of rotor pipe 1, the third cavity is located from left to right, the outside of rotor pipe 1, and the outside of the rotor pipe 1, and both ends are located respectively, and outside of rotor pipe 1 and outside the rotor pipe 1.

Through the setting of two sets of second semicircle board 302 and first semicircle board 3, utilized its inside with shell 1 to separate into three cavity, the setting of cooperation intake pipe 2, outlet duct 201, runner pipe 202 again has successfully realized controlling gas and has been made a round trip to flow in shell 1, further increases the consumption to the acoustic energy, very big improvement the amortization performance of this device.

Further, the opening directions of the side cone 5 arranged on the inner side wall of the air outlet pipe 201 and the air inlet pipe 2 face towards the end of the air inlet pipe 2 extending out of the end cover 101, and the opening directions of the side cone 5 arranged on the inner side wall of the rotating pipe 202 face towards the end of the air outlet pipe 201 extending out of the end cover 101.

Through the setting of first shell, second shell, U type draw frame 401 etc for the user can be simple and convenient with 1 unpacking apart or will inhale the cotton post 4 of sound and take out in the runner pipe 202, realize the inside cleanness of outer casing 1 or to inhaling the cleanness or the change of the cotton post 4 of sound, the structure setting is succinct, high-efficient, be convenient for assemble and clean, make the convenience of this device routine maintenance obtain improving, very big improvement the stability of life and the amortization performance of this device.

Working principle: when the device is used, air flow enters the third chamber through the air inlet pipe 2, then enters the first chamber through the air inlet pipe 202 from the third chamber, finally, the air flow is discharged from the first chamber through the air outlet pipe 201, when the air flow passes through the air inlet pipe 2, the air flow sequentially passes through the first bowl body 601, the second bowl body 602 and the third bowl body 603, as the sound leakage openings formed in the first bowl body 601, the second bowl body 602 and the third bowl body 603 are not communicated with each other in the transverse direction except the central sound leakage opening, the collision between the air flow and the bowl body 6 is increased, so that the acoustic energy loss of the air flow is greatly improved, and because the arrangement of the side cone body 5 and the opening direction of the side cone body 5 meet the flow direction of the air flow, the air flow can more easily flow into the inner direction of the side cone body 5, the contact area of the air flow and the side cone body 5 is increased, the noise reduction and the sound absorption are realized due to the friction between the air flow and the side cone body 5, when the sound absorption column 4 is used for weakening the effect, the sound absorption is realized, the sound absorption performance is greatly improved, and the sound absorption performance is further improved, and the sound absorption performance is realized, and the sound absorption performance is further improved, and the sound absorption performance is further, and the sound absorption is further improved, and the device is the in the air flow is subjected to the flow through the air inlet pipe 2.

When the air inlet pipe 2, the air outlet pipe 201 and the rotor 202 need to be cleaned, the fastening nuts 306 are only required to be taken down from the butt-joint threaded columns 304, the end covers 101 are taken down from the two ends of the outer shell 1, the second semicircular plate 302 and the first semicircular plate 3 are separated, the air inlet pipe 2, the air outlet pipe 201 and the rotor 202 can be taken out for cleaning, the U-shaped drawing frame 401 is used for enabling a user to conveniently take out the sound-absorbing cotton column 4 from the rotor 202, cleaning or replacement of the sound-absorbing cotton column 4 is achieved, the structure is simple and efficient, assembly and cleaning are convenient, convenience of daily maintenance of the device is improved, and service life of the device and stability of silencing performance are greatly improved.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an automobile muffler, includes shell body (1) and detachable joint at end cover (101) of shell body (1) port, its characterized in that: the utility model provides a high-efficiency energy-saving air conditioner, including first shell and second shell, the medial surface fixedly connected with first semicircle board (3) of first shell, the medial surface fixedly connected with second semicircle board (302) of second shell, a plurality of first joint notch (301) have been seted up to the flat side of first semicircle board (3), butt joint hole (305) have been seted up in clearance department that the flat side of first semicircle board (3) is located two first joint notch (301), a plurality of second joint notch (303) have been seted up to the flat side of second semicircle board (302), the flat side of second semicircle board (302) is located the clearance department fixedly connected with butt joint threaded post (304) of two second joint notch (303), the concave surface coarse setting of first joint notch (301) and second joint notch (303), joint has outlet duct (201), intake pipe (2), runner pipe (202) between first joint notch (301) and second joint notch (303) respectively, intake pipe (202) have, the flat side of second semicircle board (302) is provided with two second semicircle board (201), intake pipe (2) are in the inside of housing (1), the inside of semicircle board (2), the inside of the housing (201), the inside of the housing (2), the first semicircle board (2) is provided with, the inside of the housing (201) The inside of the rotary pipe (202) is provided with a sound attenuation mechanism;

the sound reducing mechanism comprises an air outlet pipe (201), an air inlet pipe (2) and bowl bodies (6) fixedly connected to the inner side wall of a rotary pipe (202), wherein the air outlet pipe (201) and the bowl bodies (6) on the inner side wall of the air inlet pipe (2) are respectively provided with a first bowl body (601), a second bowl body (602) and a third bowl body (603), the bowl bodies (6) on the inner side wall of the rotary pipe (202) are respectively provided with a fourth bowl body (7), and concave surfaces of the first bowl body (601), the second bowl body (602), the third bowl body (603) and the fourth bowl body (7) face one end of the air inlet pipe (2) extending out of the end cover (101).

2. An automotive muffler as defined in claim 1, wherein: the utility model discloses a gas inlet pipe, including end cover (101) and end cover (101), end cover (101) and end cover (101) sliding connection are stretched out to the one end of outlet duct (201), end cover (101) and with end cover (101) sliding connection of the other end of shell body (1) are stretched out to the one end of intake pipe (2), intake pipe (2) are located the central region of end cover (101), outlet duct (201) are located the marginal zone of end cover (101), butt joint screw thread post (304) stretch into in butt joint hole (305) and run through first shell, butt joint screw thread post (304) are located outside department threaded connection of first shell has fastening nut (306).

3. An automotive muffler as defined in claim 2, wherein: the inside of runner pipe (202) is located fourth bowl body (7) both sides department and has all been placed and inhale sound cotton post (4), inhale sound cotton post (4) and draw frame (401) towards the equal fixedly connected with U type of one side of runner pipe (202) opening part, the both ends bore of runner pipe (202) is narrowed, inhale the diameter of inhaling under the cotton post (4) of sound under the state of stretching and be greater than the bore of runner pipe (202) both ends mouth department.

4. A muffler for an automobile as defined in claim 3, wherein: the sound leakage ports formed in the first bowl body (601), the second bowl body (602) and the third bowl body (603) are not communicated with each other in the transverse direction except for the central sound leakage port, and the projection of the first bowl body (601), the second bowl body (602) and the third bowl body (603) which are mutually overlapped is identical to the projection of the fourth bowl body (7).

5. An automotive muffler as defined in claim 1, wherein: the opening direction of the side cone body (5) arranged on the inner side wall of the air outlet pipe (201) and the air inlet pipe (2) extends out of one end of the end cover (101) towards the air inlet pipe (2), and the opening direction of the side cone body (5) arranged on the inner side wall of the rotating pipe (202) extends out of one end of the end cover (101) towards the air outlet pipe (201).

6. An automotive muffler as defined in claim 4, wherein: the three chambers inside the outer shell (1) are a first chamber, a second chamber and a third chamber from left to right, two ends of the air inlet pipe (2) are respectively located in the outer part and the third chamber of the outer shell (1), two ends of the air outlet pipe (201) are respectively located in the first chamber and the outer part of the outer shell (1), and two ends of the rotating pipe (202) are respectively located in the first chamber and the third chamber.