CN101761379A - Rear heat shield structure of auto muffler - Google Patents
Rear heat shield structure of auto muffler Download PDFInfo
- Publication number
- CN101761379A CN101761379A CN201010042052A CN201010042052A CN101761379A CN 101761379 A CN101761379 A CN 101761379A CN 201010042052 A CN201010042052 A CN 201010042052A CN 201010042052 A CN201010042052 A CN 201010042052A CN 101761379 A CN101761379 A CN 101761379A
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- China
- Prior art keywords
- heat shield
- auto
- muffler
- rear heat
- thermal baffle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Exhaust Silencers (AREA)
Abstract
The invention discloses a rear heat shield structure of an auto muffler, which is a whole rectangular board. The middle of a rear heat shield is hogged, while the two ends are flat in the direction of length; elongated reinforcing ribs which extend along the direction of length are parallelly arranged on the face of the heat shield by stamping, and globular reinforcing ribs are arranged between the elongated reinforcing ribs. Under the condition of not increasing the thickness of the heat shield, the invention, by structural improvement, improves the structure rigidity of the rear heat shield structure of the auto muffler on one hand, and on the other hand, make the rigidity of the whole heat shield distribute uniformly and eliminate the local mode area of the rear heat shield structure of the auto muffler, thereby avoiding the abnormal sound caused by the resonance produced by the rear heat shield structure of the auto muffler driven by other driving sources. The structure has the advantages of simple structure, easy manufacturing and low cost.
Description
Technical field
The invention belongs to the automotive muffler system, be specifically related to a kind of rear heat shield structure of auto muffler.
Background technique
In existing automobile, thermal baffle is a block length square plate structure behind the silencing apparatus, it normally is connected with two crossbeams by four screws, because span reaches 400mm between the mounting points, this back thermal baffle only carries out flange at periphery, all the other are the plane, and do not have any reinforced structure, though the turnup structure of periphery can make integral rigidity increase, but because intermediate portion does not have the reinforced structure design, cause the intermediate portion rigidity still relatively poor, form the local mode zone easily, and the natural frequency at these positions is lower, very easily under the excitation of other excitation sources, resonate, and cause abnormal sound, be unfavorable for the lifting of car load NVH performance.
Summary of the invention
The objective of the invention is to over against the problems referred to above of prior art existence, a kind of rear heat shield structure of auto muffler is proposed, under the condition of material thickness that does not change existing thermal baffle and thermal baffle material, by optimizing the structure of thermal baffle, improve the natural frequency of thermal baffle, avoid thermal baffle that resonance takes place under the excitation of other excitation sources and cause abnormal sound.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
A kind of rear heat shield structure of auto muffler, its integral body are a rectangular slab, are provided with the mounting hole that is used for silencing apparatus assembling at the right and left of back thermal baffle, leave the breach of being convenient to assemble of stepping down respectively in the upper left corner and the lower right corner of back thermal baffle.It is characterized in that: the shape of arch upward in the middle of described back thermal baffle is in the longitudinal direction, two ends are flat, and be pressed with along its length the rectangular stiffening rib that extends in plate face upper punch, described rectangular stiffening rib is upper, middle and lower and is arranged in parallel on the plate face, and between each rectangular stiffening rib spherical stiffening rib is set.
Further, the periphery at described back thermal baffle has also designed flange.
The present invention is not increasing under the thick condition of heat insulation plate, by structure optimization, the thermal baffle plate body is carried out arch design, and on the plate face, reasonably distinguish rectangular stiffening rib and spherical stiffening rib, improve on the one hand the structural rigidity of thermal baffle behind the silencing apparatus, the stiffness distribution that is whole thermal baffle on the other hand is even, eliminated the local mode zone of thermal baffle behind the silencing apparatus, avoided the appearance of central region local mode, thereby avoid behind the silencing apparatus thermal baffle that resonance takes place under the excitation of other excitation sources and cause abnormal sound, make the natural frequency of whole thermal baffle significantly improve, have simple in structurely, easily make and advantage cheaply.
Description of drawings
Fig. 1 is the structural representation of thermal baffle behind the silencing apparatus;
Fig. 2 is the plan view of Fig. 1.
Wherein: 1 is that arcuation plate face, 2 is that rectangular stiffening rib, 3 is that spherical stiffening rib, 4 is flange
Embodiment
Further specify structure of the present invention below in conjunction with accompanying drawing:
Referring to Fig. 1 and Fig. 2, thermal baffle integral body is a rectangular slab behind this automotive muffler, is useful on mounting hole 5 with vehicle beam assembling at the right and left of back thermal baffle, is connected with car body by screw.The breach of being convenient to assemble 6 of stepping down is left in the upper left corner and the lower right corner at the back thermal baffle.Back thermal baffle is the arcuation plate face 1 that arch upward in the centre, two ends are flat in the longitudinal direction, avoids occurring under the situation of longspan the structure on big plane, helps the lifting of integral rigidity.Simultaneously, be pressed with along its length 2, three the rectangular stiffening ribs of three rectangular stiffening ribs that extend in plate face upper punch and on the plate face, be upper, middle and lower and be arranged in parallel, promote behind the silencing apparatus thermal baffle vertically and the structural rigidity at middle part.In addition, 14 spherical stiffening ribs 3 are set between each rectangular stiffening rib 2, so not only eliminated the weak zone of the local stiffness on the thermal baffle behind the silencing apparatus, also the noise from the silencing apparatus transmission has been absorbed, thereby the thermal baffle structural rigidity distributes more even after making silencing apparatus.In addition, the periphery at the plate face all forms flange 4, the raising edge stiffness.
Claims (2)
1. rear heat shield structure of auto muffler, it is a rectangular slab, is useful on mounting hole with the vehicle beam assembling at the right and left of back thermal baffle, leaves the breach of being convenient to assemble of stepping down in the upper left corner and the lower right corner of back thermal baffle; It is characterized in that: arch upward in the middle of described back thermal baffle is in the longitudinal direction, the shape that two ends are flat, and be pressed with along its length the rectangular stiffening rib that extends in plate face upper punch, described rectangular stiffening rib is upper, middle and lower and is arranged in parallel on the plate face, and between each rectangular stiffening rib spherical stiffening rib is set.
2. rear heat shield structure of auto muffler according to claim 1 is characterized in that: the periphery of described back thermal baffle has flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010042052A CN101761379A (en) | 2010-01-14 | 2010-01-14 | Rear heat shield structure of auto muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010042052A CN101761379A (en) | 2010-01-14 | 2010-01-14 | Rear heat shield structure of auto muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101761379A true CN101761379A (en) | 2010-06-30 |
Family
ID=42492744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010042052A Pending CN101761379A (en) | 2010-01-14 | 2010-01-14 | Rear heat shield structure of auto muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101761379A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165722A (en) * | 2017-07-19 | 2017-09-15 | 重庆宗申通用动力机械有限公司 | A kind of universal petrol engine silencer outer cover |
| CN109484484A (en) * | 2018-11-30 | 2019-03-19 | 东风商用车有限公司 | A kind of lightweight vehicle frame transom beam |
| CN115263515A (en) * | 2022-08-26 | 2022-11-01 | 霍山汇能汽车零部件制造有限公司 | Rear heat insulation plate of automobile muffler |
-
2010
- 2010-01-14 CN CN201010042052A patent/CN101761379A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165722A (en) * | 2017-07-19 | 2017-09-15 | 重庆宗申通用动力机械有限公司 | A kind of universal petrol engine silencer outer cover |
| CN107165722B (en) * | 2017-07-19 | 2023-09-08 | 重庆宗申通用动力机械有限公司 | Muffler outer cover of general gasoline engine |
| CN109484484A (en) * | 2018-11-30 | 2019-03-19 | 东风商用车有限公司 | A kind of lightweight vehicle frame transom beam |
| CN115263515A (en) * | 2022-08-26 | 2022-11-01 | 霍山汇能汽车零部件制造有限公司 | Rear heat insulation plate of automobile muffler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100630 |