CN205936771U - Silencer - Google Patents

Abstract

The utility model relates to a motor vehicle amortization technical field especially relates to a silencer, include two and half casings and the hush pipe that is located half casing, half casing internal surface is provided with the recess, is provided with the blank pressing on every side, and half casing front end blank pressing department is provided with semicircular groove, is provided with the step on the half casing internal surface of semicircular groove lower limb, and one side blank pressing department of half casing is passed through mutually with half casing and is provided with semi -circular hole, install the mount in half casing, the mount top sets up slottedly, the hush pipe both ends are the spinning structure, and this silencer intensity is high, with low costs, and it is obvious to subtract rash effect.

Description

A kind of muffler

Technical field

The utility model is related to motor vehicle noise reduction technical field, more particularly, to a kind of muffler.

Background technology

Generally muffler includes silencer casing, and silencer casing plays the effect of protection to internal silencing pipeline, when The muffler of front motor vehicle in use, because road surface is uneven, may touch ground outside muffler Hard thing, and lead to shell can be deformed, damage the internal structure of the silencing pipeline of enclosure, affect disappearing of whole muffler Audio fruit；Meanwhile, there is no noise-decreasing device and fixing device, silencing pipeline between silencing pipeline stretches out free end and shell Two ends junction pneumatic noise is big, there is sliding friction and increased Wall Vibration noise, and hold between silencing pipeline and shell Easily cause pipe bending；The easy ponding of enclosure, causes filler to expand, affects erasure effect.

Utility model content

The purpose of this utility model is to overcome that current muffler is yielding, easily produce between hush pipe and shell and shake Problem dynamic, that noise is big, and a kind of muffler is provided, this silencer casing to increase intensity using groove structure, increases step For load-bearing and fixing hush pipe, intensity is big, good muffling effect.

The utility model is realized in：A kind of muffler, the noise reduction including two half shells and in half-shell body Pipe, half shell inner surface setting is fluted, surrounding is provided with flanging, is provided with semi-circular recesses at the flanging of half shell front end, and half Step is provided with the half shell inner surface of circular groove lower limb, provides with half-shell body phase at the flanging of half shell side and be equipped with half Circular port；Fixed mount is installed in described half-shell body, fixing top of the trellis is provided with groove；Described hush pipe two ends are spinning structure.

Preferably, two described half shells close, by half-shell, the cavity that weldering forms hollow.

Preferably, described inside cavity has thermally resistant fiber glass filler.

Preferably, described groove is rectangular recess and equidistant parallel setting.

Preferably, described step upper surface is cambered surface.

Preferably, described hush pipe two ends are set with flange.

Preferably, for sheet and edge is provided with crimp to described flange.

Preferably, described flange inner wall and noise reduction pipe outer wall junction are set to cambered surface.

Preferably, described flange and hush pipe two ends are welded and fixed.

The utility model has the following advantages that：Muffler of the present utility model improves rigid, the noise reduction of shell wall Device intensity is high, bearing capacity is big, and muffler is set up step and fixed silencing pipeline, greatly reduces the sliding friction of hush pipe and shell Noise, and effectively shared the moiety by weight of hush pipe, effectively reduce the noise of Wall Vibration generation；The groove of fixing top of the trellis Structure makes draining smooth, and the sheet flange of stamped reduces production cost, and flange inner wall cambered surface can eliminate partial noise, Subtract hot-tempered effect obvious, durable.

Brief description

Fig. 1 is the utility model overall structure diagram；

Fig. 2 is flange rear end structure schematic diagram；

Fig. 3 is flange front-end architecture schematic diagram.

In figure：1- half shell, 2- hush pipe, 3- groove, 4- flanging, 5- semi-circular recesses, 6- step, 7- semi-circular hole, 8- fixed mount, 9- groove, 10- flange, 11- crimp, 12- cambered surface.

Specific embodiment

With reference to specific embodiment, the utility model will be further described.

Embodiment 1：A kind of muffler, as shown in Fig. 1 ~ 3, including two half shells 1, two described half shells 1 pass through weldering Connect the cavity forming hollow, in cavity, be provided with hush pipe 2, other spaces that inside cavity removes hush pipe 2 are filled with heat-resisting glass Glass fiber, can effectively stop or weaken noise and outwards propagate, half shell 1 inner surface setting fluted 3, and groove 3 is that rectangle is recessed Groove and equidistant parallel setting, can improve the rigidity of shell, make that muffler intensity is higher, bearing capacity is bigger, around half shell 1 It is provided with flanging 4, the flanging 4 of two half shells 1 is welded and fixed mutually, at half shell 1 front and back ends flanging 4, be each provided with semicircle Connected in star 5, two semi-circular recesses 5 form a complete venthole, half shell 1 inner surface of semi-circular recesses 5 lower limb On be provided with step 6, step 6 upper surface is cambered surface, and step 6 can fix hush pipe 2, greatly reduce the slip of pipeline and shell Friction noise, and effectively shared the moiety by weight of hush pipe 2, reduce the noise of Wall Vibration generation, half shell 1 one side pressure Provide with half shell 1 inner surface phase at side 4 and be equipped with semi-circular hole 7, two semi-circular hole 7 form a complete air admission hole；Disappear Sound tube two ends are spinning structure, are easy to fixing hush pipe at air inlet and gas outlet, reduce hush pipe and air admission hole, venthole Between rock；Fixed mount 8 is installed in described half shell 1, fixed mount 8 top is provided with groove 9, groove 9 connect with outer wall so that Draining is smooth, it is to avoid filler glass fibre expands；Described hush pipe 2 two-port connects external pipe it is preferred that hush pipe 2 Two-port is respectively welded and is set with flange 10, and for sheet and edge strikes out crimp 11, crimp 11 and flange 10 to described flange 10 Cross section is vertical, is easily installed, and flange inner wall and hush pipe 2 outer wall junction are set to cambered surface 12, can effectively eliminate air-flow Noise, simultaneously facilitates hush pipe 2 and docks with external pipe, the sheet flange 10 of stamped can reduce production cost.

Claims (9)

1. a kind of muffler it is characterised in that：Hush pipe including two half shells and in half-shell body, half shell inner surface Setting is fluted, surrounding is provided with flanging, is provided with semi-circular recesses at the flanging of half shell front end, semi-circular recesses lower limb Step is provided with half shell inner surface, provides with half-shell body phase at the flanging of half shell side and be equipped with semi-circular hole；Described half-shell Fixed mount is installed in vivo, fixing top of the trellis is provided with groove；Described hush pipe two ends are spinning structure.

2. a kind of muffler according to claim 1 it is characterised in that：Two described half shells are closed weldering by half-shell and are formed The cavity of hollow.

3. a kind of muffler according to claim 2 it is characterised in that：Described inside cavity has thermally resistant fiber glass to fill Thing.

4. a kind of muffler according to claim 1 it is characterised in that：Described groove is rectangular recess and equidistant parallel Setting.

5. a kind of muffler according to claim 1 it is characterised in that：Described step upper surface is cambered surface.

6. a kind of muffler according to claim 1 it is characterised in that：Described hush pipe two ends are set with flange.

7. a kind of muffler according to claim 6 it is characterised in that：It is curved that described flange is that sheet and edge are provided with Side.

8. a kind of muffler according to claim 6 it is characterised in that：Described flange inner wall and noise reduction pipe outer wall junction It is set to cambered surface.

9. a kind of muffler according to claim 6 it is characterised in that：Described flange is welded and fixed with hush pipe two ends.