CN204552909U - A kind of automobile exhaust system flexible hinge - Google Patents
A kind of automobile exhaust system flexible hinge Download PDFInfo
- Publication number
- CN204552909U CN204552909U CN201520066894.4U CN201520066894U CN204552909U CN 204552909 U CN204552909 U CN 204552909U CN 201520066894 U CN201520066894 U CN 201520066894U CN 204552909 U CN204552909 U CN 204552909U
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- flexible hinge
- exhaust system
- automobile exhaust
- slip joint
- bellows
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- 239000000919 ceramic Substances 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 5
- 230000009916 joint effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 2
- 230000007812 deficiency Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000013016 damping Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
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- Exhaust Silencers (AREA)
Abstract
The purpose of this utility model proposes a kind of automobile exhaust system flexible hinge, produce noise to avoid vent systems flexible hinge to cause bellows and slip joint directly to clash into because flexible hinge amplitude is excessive when system resonance, and then promote the NVH performance of car load vent systems.Automobile exhaust system flexible hinge of the present utility model comprises outer net, bellows, slip joint and snap ring, described bellows is between outer net and slip joint, snap ring is positioned at the end of automobile exhaust system flexible hinge, key is that this automobile exhaust system flexible hinge also comprises vibration isolator, described vibration isolator between bellows and slip joint, and is wrapped in around slip joint.The utility model adds one deck vibration isolator on existing flexible hinge basis, through the change less to structure, just can solve automobile exhaust system causes the durability of flexible hinge and affects car load NVH performance defect because designing deficiency; Production technology of the present utility model is also relatively simple simultaneously, and cost is lower, has good market prospects.
Description
Technical field
The utility model belongs to automobile exhaust system technical field, is specifically related to automobile heat-extraction system flexible hinge.
Background technique
Flexible hinge unit is as the key components and parts of automobile exhaust system, except the durability of the component such as automobile exhaust system can be promoted, the NVH performance of automobile can also be promoted, can also compensate the manufacturing tolerances of automobile exhaust system simultaneously, improve the assembling capacity of automobile exhaust system, reduce the manufacture cost of vent systems component, be used widely in automobile industry at present.
The flexible hinge basic structure applied at present is shown in figure mono-; primarily of outer net 1(mesh grid or fish line net), bellows 2, slip joint 3 and snap ring 4 four part composition; wherein outer net mainly works to improve flexible hinge rigidity, restriction bellows Tension and Compression lower in working order, protects inner member; bellows mainly plays the effect of vibration attenuation, and slip joint mainly plays gas flow guiding effect.To become for effective attenuation automobile power global vibration and the automobile exhaust system vibration that power brings is swashed on road surface, it is relatively low that the rigidity of automobile exhaust system flexible hinge is designed, but due to the non-constant width of vibration frequency range during engine operation, for common four cylinder engine, the substantial scope of vibration frequency at that time can from 0Hz to 250Hz, conventional operating mode is also 0Hz to 150Hz, and the rigidity of bellows in this frequency range will increase rapidly, simultaneously when the system mode of vent systems flexible hinge fore-end be also designed lower, the natural frequency of flexible hinge then cannot avoid the rhythm of engine, so when engine operating frequencies overlaps with the natural frequency of flexible hinge, flexible hinge just will inevitably produce resonance phenomenon.After resonating, first due to the amplitude when amplitude of flexible hinge far can exceed the normal work of flexible hinge when there is resonance, thus the endurance quality of flexible hinge can be had influence on, after the fatigue limit of the critical component bellows and slip joint that exceed flexible hinge, bellows there will be fracture, slip joint there will be inefficacy, outer net there will be the phenomenons such as damaged; Secondly, when resonating, after bellows amplitude exceedes a certain particular value, bellows can produce with slip joint and clash into, and thus at this moment can produce certain noise, can reduce the NVH performance of car load.
For avoiding vent systems flexible hinge to produce resonance phenomenon in use, it is relatively high that the system mode of automobile exhaust system flexible hinge fore-end is designed usually, produces resonance phenomenon herein to avoid the flexible hinge of vent systems.But in the exploitation of some vehicle, because of the problem of arranging between car load and power assembly system, the position of vent systems flexible hinge can only be placed to position relatively far away, distance engine exhaust place, the system mode of such vent systems flexible hinge front end then cannot reach the requirement of exhaust system design target, under such vent systems arrangement condition, vent systems flexible hinge just cannot be avoided producing resonance phenomenon in the course of the work.
Summary of the invention
The purpose of this utility model proposes a kind of automobile exhaust system flexible hinge, produce noise to avoid vent systems flexible hinge to cause bellows and slip joint directly to clash into because flexible hinge amplitude is excessive when system resonance, and then promote the NVH performance of car load vent systems.
Automobile exhaust system flexible hinge of the present utility model comprises outer net, bellows, slip joint and snap ring, described bellows is between outer net and slip joint, snap ring is positioned at the end of automobile exhaust system flexible hinge, key is that this automobile exhaust system flexible hinge also comprises vibration isolator, described vibration isolator between bellows and slip joint, and is wrapped in around slip joint.
Above-mentioned flexible hinge major processing steps is after all parts of current flexible hinge all complete, first outside the slip joint part of flexible hinge, vibration isolator is wrapped up, again the slip joint wrapping damping pad is loaded bellows, afterwards bellows is loaded outer net, snap ring carries out erection welding the most at last.Add one deck vibration isolator between the bellows of the utility model in the flexible hinge of vent systems and slip joint, can avoid producing noise because vibration causes directly clashing between bellows and slip joint.
Further, one end and the slip joint of described vibration isolator are fixed, and the other end is can the free end of relative telescopic joint activity.Such installation vibration isolator can prevent vibration isolator from moving freely, and the free-extension of vibration isolator to slip joint can be avoided again to cause obstruction.
Further, for reducing costs, described vibration isolator is fibrage pad.Specifically, described vibration isolator can be ceramic fiber paper pad.Ceramic fiber paper spacer has high-temperature stability, has certain intensity and compressibility simultaneously, can prevent friction and Extrusion between bellows and slip joint and cause fracture broken.
The utility model adds one deck vibration isolator on existing flexible hinge basis, through the change less to structure, just can solve automobile exhaust system causes the durability of flexible hinge and affects car load NVH performance defect because designing deficiency; Production technology of the present utility model is also relatively simple simultaneously, and cost is lower, has good market prospects.
Accompanying drawing explanation
Fig. 1 is the structural representation of automobile exhaust system flexible hinge of the prior art.
Fig. 2 is the structural representation of automobile exhaust system flexible hinge of the present utility model.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, the effect and working principle etc. of embodiment of the present utility model as the mutual alignment between the shape of involved each component, structure, each several part and annexation, each several part are described in further detail.
Embodiment 1:
As shown in Figure 2, the automobile exhaust system flexible hinge of the present embodiment comprises outer net 1, bellows 2, slip joint 3 and snap ring 4, described bellows 2 is between outer net 1 and slip joint 3, snap ring 4 is positioned at the end of automobile exhaust system flexible hinge, key is that this automobile exhaust system flexible hinge also comprises vibration isolator 5, described vibration isolator 5 between bellows 2 and slip joint 3, and is wrapped in around slip joint 3.
One end of vibration isolator 5 and slip joint 3 are fixed, and the other end is can save the free end of 3 activities by relative telescopic.Such installation vibration isolator 5 can prevent vibration isolator 5 from moving freely, and the free-extension of vibration isolator 5 pairs of slip joints 3 can be avoided again to cause obstruction.
For reducing costs, described vibration isolator 5 is ceramic fiber paper washer.Ceramic fiber paper spacer has high-temperature stability, has certain intensity and compressibility simultaneously, can prevent friction and Extrusion between bellows 2 and slip joint 3 and cause fragmentation of rupturing.
Above-mentioned flexible hinge major processing steps is after all parts of current flexible hinge all complete, first outside slip joint 3 part of flexible hinge, vibration isolator 5 is wrapped up, again the slip joint 3 wrapping damping pad is loaded bellows 2, afterwards bellows 2 is loaded outer net 1, snap ring 4 carries out erection welding the most at last.Add one deck vibration isolator 5 between the bellows 2 of the utility model in the flexible hinge of vent systems and slip joint 3, can avoid causing directly clashing into owing to vibrating and producing noise between bellows 2 and slip joint 3.
Claims (4)
1. an automobile exhaust system flexible hinge, comprise outer net, bellows, slip joint, vibration isolator and snap ring, described bellows is between outer net and slip joint, snap ring is positioned at the end of automobile exhaust system flexible hinge, it is characterized in that this automobile exhaust system flexible hinge also comprises vibration isolator, described vibration isolator between bellows and slip joint, and is wrapped in around slip joint.
2. automobile exhaust system flexible hinge according to claim 1, is characterized in that one end of described vibration isolator and slip joint are fixed, and the other end is can the free end of relative telescopic joint activity.
3. automobile exhaust system flexible hinge according to claim 1 and 2, is characterized in that described vibration isolator is fibrage pad.
4. automobile exhaust system flexible hinge according to claim 3, is characterized in that described vibration isolator is ceramic fiber paper washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520066894.4U CN204552909U (en) | 2015-01-30 | 2015-01-30 | A kind of automobile exhaust system flexible hinge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520066894.4U CN204552909U (en) | 2015-01-30 | 2015-01-30 | A kind of automobile exhaust system flexible hinge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204552909U true CN204552909U (en) | 2015-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520066894.4U Active CN204552909U (en) | 2015-01-30 | 2015-01-30 | A kind of automobile exhaust system flexible hinge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204552909U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014582A (en) * | 2016-06-15 | 2016-10-12 | 宁波菲力克汽配有限公司 | Shock-absorbing flexible tube |
-
2015
- 2015-01-30 CN CN201520066894.4U patent/CN204552909U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014582A (en) * | 2016-06-15 | 2016-10-12 | 宁波菲力克汽配有限公司 | Shock-absorbing flexible tube |
| CN106014582B (en) * | 2016-06-15 | 2019-01-15 | 宁波菲力克汽配有限公司 | A kind of damping flexible pipe |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |