Automobile silencer shell

Abstract

The utility model discloses an automobile silencer shell, and relates to the technical field of automobile silencers. Comprising a lower shell and an upper shell, a lower side plate and an upper side plate are formed at the two ends of the lower shell and the two ends of the upper shell respectively, and semicircular grooves are formed in the opposite sides of the lower side plate and the upper side plate; turnups are formed on the two sides of the lower shell and the two sides of the upper shell respectively. A plurality of vertical supporting reinforcing ribs are formed on the inner side of the lower side plate. Preferably, the lower shell and the upper shell are both formed by punching stainless steel plates. Preferably, outer inclined planes are formed on the inner sides of the turnups, and a V shape is formed between the outer inclined planes of the two turnups on the same side. According to the utility model, the lower shell and the lower side plate as well as the upper shell and the upper side plate are formed by stamping, the joints are fixed by welding, and after the lower shell is impacted upwards, the side plates on the two sides are integrally formed, so that the cracking of the side plates and the shell under the impact force can be effectively prevented, and the service life of the silencer is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile mufflers, in particular to an automobile muffler shell. Background Art

[0002] A car muffler, also known as an exhaust muffler or silencer, is a device installed on a car's exhaust system to reduce the noise generated by the engine's exhaust and the exhaust gas pressure discharged.

[0003] like Figure 4 As shown, most of the existing mid-section silencer shells are welded by two upper and lower stamped shells, and then side panels with silencer components and exhaust pipes (not shown in the figure) are welded at their ends. After installation, the silencer components are located inside the shell, and the exhaust pipes are located on both sides of the side panels.

[0004] Since the muffler is installed on the chassis of the vehicle, when the vehicle is driving on a rugged mountain road, the vehicle moves up and down under the shock absorbing effect of the shock absorber, and the muffler installed under the chassis may collide with the uneven road surface, or the driver may accidentally run over an obstacle, which may collide with the bottom of the vehicle's muffler, which may easily cause the bottom shell and side panel of the muffler to deform. There may also be a small crack in the welding area between the side panel and the shell, and the deformation of the side panel may cause the exhaust pipe to deform, thus affecting the use of the vehicle. Utility Model Content

[0005] The purpose of the utility model is to provide a car muffler housing to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a car muffler housing, comprising a lower housing and an upper housing, the two ends of the lower housing and the upper housing are respectively formed with a lower side plate and an upper side plate, and the opposite sides of the lower side plate and the upper side plate are formed with a semicircular groove;

[0007] Both sides of the lower shell and the upper shell are respectively formed with flanges;

[0008] A plurality of vertical support reinforcement ribs are formed on the inner side of the lower side plate.

[0009] In a further preferred embodiment of the present invention, both the lower shell and the upper shell are formed by stamping of stainless steel plates.

[0010] In the present embodiment, an outer bevel is formed on the inner side of the flange, and a V-shape is formed between the outer bevels of two flanges on the same side.

[0011] In the present embodiment, a plurality of the vertical support reinforcement ribs are further preferably distributed radially relative to the arc center of the semicircular groove.

[0012] In the present embodiment, a plurality of transverse supporting reinforcing ribs are formed on the inner sides of the lower side plate and the upper side plate.

[0013] In the present embodiment, a plurality of the transverse support reinforcement ribs are concentric with the semicircular groove.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The automobile muffler shell, the lower shell and the lower side plate, and the upper shell and the upper side plate are all stamped and fixed at the connection by welding. When the lower shell is impacted upward, since the side plates on both sides are integrally formed, the side plates and the shell can be effectively prevented from cracking under the impact force, thereby improving the service life of the muffler.

[0016] In addition, a number of vertical support reinforcement ribs are formed on the inner side of the lower shell. The provision of the vertical support reinforcement ribs can effectively increase the strength of the lower side plate, reduce the deformation of the lower side plate under impact force, and further improve the service life of the muffler.

[0017] At the same time, a number of transverse support reinforcement ribs are formed on the inner sides of the upper shell and the lower shell to control the rebound effect when the upper shell and the lower shell are stamped, making the workpiece more stable and improving the welding accuracy.

[0018] Furthermore, an outer bevel is formed on the inner side of the flange, and the outer bevels of the two flanges on the same side are V-shaped. The V-shaped structure can increase the welding area of ​​the sides of the upper shell and the lower shell, thereby improving the connection stability between the upper shell and the lower shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a cross-sectional view of the utility model;

[0021] Figure 3 For this utility model Figure 2 A magnified view of part A;

[0022] Figure 4 It is a structural diagram of the front-end silencer in the prior art.

[0023] In the figure: 101, lower shell; 102, upper shell; 201, lower side plate; 202, upper side plate; 3, flange; 301, outer bevel; 401, vertical support reinforcement rib; 402, horizontal support reinforcement rib. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The muffler housing in this solution is a front-end muffler of a car, which is installed on the side of the vehicle chassis close to the three-way catalytic converter and is fixed to the chassis of the vehicle through the hanging ears welded on the muffler housing.

[0026] like Figure 1-Figure 3 As shown, the utility model provides a technical solution: a car muffler shell, comprising a lower shell 101 and an upper shell 102, the lower shell 101 and the upper shell 102 are respectively stamped with a lower side plate 201 and an upper side plate 202 at both ends, the lower shell 101 and the upper shell 102 are both made of stainless steel plates, and since a semicircular groove is pre-stamped on the side of the plate, after the lower shell 101 and the upper shell 102 are stamped, the semicircular grooves formed on the opposite sides of the lower side plate 201 and the upper side plate 202 form a circular through hole;

[0027] It can be understood that the lower shell 101 and the lower side plate 201 as well as the upper shell 102 and the upper side plate 202 are all stamped and fixed at the connection points by welding. When the lower shell 101 is subjected to an upward impact, the lower shell 101 deforms and drives the lower side plates 201 on both sides to generate an extrusion pressure. Since the side plates on both sides are integrally formed, the side plates and the shell can be effectively prevented from cracking under the impact force, thereby improving the service life of the muffler.

[0028] A flange 3 is formed on both sides of the lower shell 101 and the upper shell 102, and an outer inclined surface 301 is formed on the inner side of the flange 3. It should be noted that the outer inclined surfaces 301 of the two flanges 3 on the same side are V-shaped. The V-shaped structure can increase the welding area of ​​the side surfaces of the upper shell 102 and the lower shell 101, thereby improving the connection stability between the upper shell 102 and the lower shell 101;

[0029] In order to effectively increase the strength of the lower side plate 201, reduce the deformation of the lower side plate 201 under impact force, and further improve the service life of the muffler, a plurality of vertical support reinforcement ribs 401 are formed on the inner side of the lower side plate 201, and the plurality of vertical support reinforcement ribs 401 are radially distributed relative to the arc center of the semicircular groove.

[0030] In order to control the rebound effect when stamping the upper shell 102 and the lower shell 101, make the workpiece more stable and improve the welding accuracy, a plurality of transverse support reinforcing ribs 402 are formed on the inner side of the lower side plate 201 and the upper side plate 202, and the plurality of transverse support reinforcing ribs 402 are concentric with the semicircular groove.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A car muffler housing, comprising a lower housing (101) and an upper housing (102), characterized in that: The lower shell (101) and the upper shell (102) are respectively formed with a lower side plate (201) and an upper side plate (202) at both ends, and semicircular grooves are formed on the opposite sides of the lower side plate (201) and the upper side plate (202); Both sides of the lower shell (101) and the upper shell (102) are respectively formed with flanges (3); A plurality of vertical supporting reinforcing ribs (401) are formed on the inner side of the lower side plate (201).

2. The automobile muffler housing according to claim 1, characterized in that: The lower shell (101) and the upper shell (102) are both formed by stamping of stainless steel plates.

3. The automobile muffler housing according to claim 1, characterized in that: An outer inclined surface (301) is formed on the inner side of the flange (3), and the outer inclined surfaces (301) of two flanges (3) on the same side are V-shaped.

4. The automobile muffler housing according to claim 1, characterized in that: A plurality of the vertical support reinforcing ribs (401) are radially distributed relative to the arc center of the semicircular groove.

5. The automobile muffler housing according to claim 1, characterized in that: A plurality of transverse supporting reinforcing ribs (402) are formed on the inner sides of the lower side plate (201) and the upper side plate (202).

6. The automobile muffler housing according to claim 5, characterized in that: A plurality of the transverse support reinforcing ribs (402) are concentric with the semicircular groove.

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