CN207328129U - A kind of damping bellows - Google Patents
A kind of damping bellows Download PDFInfo
- Publication number
- CN207328129U CN207328129U CN201721381059.5U CN201721381059U CN207328129U CN 207328129 U CN207328129 U CN 207328129U CN 201721381059 U CN201721381059 U CN 201721381059U CN 207328129 U CN207328129 U CN 207328129U
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- Prior art keywords
- bellows
- damping
- tube
- connecting tube
- utility
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Abstract
The utility model discloses a kind of damping bellows, including the first bellows, the second bellows and connecting tube, the equal length of first bellows and second bellows, the connecting tube is arranged between first bellows and second bellows, the outside diameter of the connecting tube is less than the outside diameter of first bellows and second bellows, first bellows is connected with casing, and second bellows is connected with exhaust pipe；The damping bellows of the utility model, by being equipped with connecting tube between the first bellows and the second bellows of equal length, can be to avoid the abrasion and deformation of first wave line pipe and the second bellows middle part, reduce exhaust gas leak area, ensure sealing effect, compared with prior art, while the utility model equally has stronger damping performance, also there is better seal, disclosure satisfy that challenge caused by following six discharge standard of state upgrading.
Description
Technical field
Automobile exhaust system technical field is the utility model is related to, particularly a kind of damping bellows.
Background technology
Damping bellows plays vital work as part important in exhaust system in exhaust system
With.At present, since the mainstream car design of medium and heavy car is still five product of four product of state and state, to the vent flow being vented in exhaust system
Not strict requirements, therefore the vibration absorption unit in its exhaust system mainly uses metal expansion pipe.
As shown in Figure 1, the internal structure of existing metal expansion pipe 100 is made of double-deck S types hasp 200, adjacent S types
The head of hasp 200 and afterbody are overlapped by U-type groove, and the flexibility of the metal expansion pipe 100 of this structure can preferably provide larger
Displacement compensation amount, but due to the structure of its special double-deck S types hasp 200, cause its leakproofness poor, so as to be easy to cause
Exhaust gas leakage amount severely exceeds.
And as emission request is more and more harsh, the requirement of exhaust gas leakage amount also accordingly improves, and metal expansion pipe is due to letting out
Leakage quantity is larger, it is difficult to meets the emission request of six standard of state, therefore in order to reduce the leakage rate of capacity in exhaust system, need to open
Send a kind of new damping bellows.
Utility model content
The purpose of this utility model is to provide a kind of damping bellows, exists to solve metal expansion pipe of the prior art
The larger technical problem of leakage rate, the damping bellows of the utility model can reduce in the case where ensureing damping performance
Leakage rate, improves leakproofness.
To achieve these goals, the utility model provides following technical solution：
A kind of damping bellows, including the first bellows, the second bellows and connecting tube；First bellows and described
The equal length of second bellows, the connecting tube are arranged between first bellows and second bellows, the company
The outside diameter of adapter is less than the outside diameter of first bellows and second bellows；First bellows is connected with casing,
Second bellows is connected with exhaust pipe.
Preferably, the connecting tube is equipped with parallel groove in the circumferential.
Preferably, the material of the connecting tube is rubber, and the material of first bellows and second bellows is
Metal.
Preferably, the outer surface of first bellows is equipped with evenly spaced protrusion, and the raised vertical section is in U
Shape, including first side, arc-shaped side and second side, described arc-shaped side one end are connected with the first side, the other end and institute
Second side connection is stated, the first side and the second side are tilted towards the centerline direction of the arc-shaped side.
Preferably, first bellows haves three layers altogether, including inner tube, middle tube and outer tube, the inner tube, institute
State middle tube and the outer tube is sequentially connected from the inside to the outside, the interior table of the inner tube, the middle tube and the outer tube
The evenly spaced protrusion is equipped with face and outer surface.
Preferably, sound insulation and noise reduction layer, the middle tube and the outer layer are equipped between the inner tube and the middle tube
Damping damping layer is equipped between pipe, the sound insulation and noise reduction layer is made of glass fibre, and the damping damping layer is made of rubber.
Preferably, the end of first bellows and second bellows is equipped with boss, the vertical profile of the boss
Face is trapezoidal.
Preferably, anti-corrosion layer, the corrosion resistant are equipped with the inner wall of first bellows and second bellows
Erosion layer is made of polytetrafluoroethylene (PTFE).
The beneficial effects of the utility model are：
The utility model provides a kind of damping bellows, including the first bellows, the second bellows and connecting tube, described
The equal length of first bellows and second bellows, the connecting tube are arranged on first bellows and second ripple
Between line pipe, the outside diameter of the connecting tube is less than the outside diameter of first bellows and second bellows, the first wave
Line pipe is connected with casing, and second bellows is connected with exhaust pipe；The damping bellows of the utility model, by length phase
Deng the first bellows and the second bellows between be equipped with connecting tube, can be to avoid the centre of first wave line pipe and the second bellows
The abrasion and deformation at position, reduce exhaust gas leak area, ensure sealing effect, compared with prior art, the utility model is same
While with stronger damping performance, also with better seal, it disclosure satisfy that following six discharge standard of state upgrading is brought
Challenge.
Brief description of the drawings
Fig. 1 is the internal structure schematic diagram of metal expansion pipe of the prior art；
Fig. 2 is the overall structure diagram of the damping bellows of the utility model embodiment；
Fig. 3 is the internal structure schematic diagram of the damping bellows of the utility model embodiment.
Description of reference numerals：
Fig. 1：100- metal expansion pipes, 200-S type hasps；
Fig. 2-Fig. 3：The first bellowss of 1-, the second bellowss of 2-, 3- connecting tubes, 4- casings, 5- exhaust pipes, 6- grooves, 7-
It is raised.
Embodiment
The embodiment of the utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is same or like element.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and cannot be construed to the utility model
Limitation.
As shown in Figures 2 and 3, a kind of damping bellows of embodiment offer of the utility model, including the first bellows 1,
The equal length of second bellows 2 and connecting tube 3, first bellows 1 and second bellows 2, the connecting tube 3 are set
Between first bellows 1 and second bellows 2, the outside diameter of the connecting tube 3 is less than 1 He of the first bellows
The outside diameter of second bellows 2, first bellows 1 are connected with casing 4, and second bellows 2 connects with exhaust pipe 5
Connect.Wherein, the first bellows 1 is identical with the structure of the second bellows 2.First bellows 1 preferably passes through welding with casing 4
Affixed, second bellows 2 is with exhaust pipe 5 it is also preferred that affixed by welding.
The damping bellows of the utility model embodiment, passes through the first bellows 1 and the second bellows 2 in equal length
Between be equipped with connecting tube 3, can to avoid the abrasion and deformation of the larger middle part of stress, reduce exhaust gas leak area, ensure
Sealing effect, compared with prior art, while the utility model equally has stronger damping performance, also with better seal
Property and durability, disclosure satisfy that challenge caused by the upgrading of following six discharge standard of state.
In order to further lift the damping effect of the damping bellows of the utility model embodiment, the connecting tube 3 is in week
Parallel groove 6 is equipped with upwards.Groove 6 is preferably uniformly distributed along the length direction of connecting tube 3, and the width of multiple grooves 6
It can be arranged as required to differ.
Preferably, the material of the connecting tube 3 is the material of rubber, first bellows 1 and second bellows 2
For metal, the material of the first bellows 1 and second bellows 2 can be the metals such as stainless steel, carbon steel.First bellows 1
Metal is arranged to second bellows 2, it can also be ensured that integrally-built intensity.Connecting tube 3 is arranged to rubber, Neng Gougeng
Good absorption is transferred to vibrations and impact between the first bellows 1 and second bellows 2.
As shown in figure 3, the outer surface of first bellows 1 is equipped with evenly spaced raised 7, raised 7 vertical profile
In U-shaped, including first side, arc-shaped side and second side, described arc-shaped side one end is connected with the first side, another in face
End is connected with the second side, and the first side and the second side are inclined towards the centerline direction of the arc-shaped side
Tiltedly.Structure one end of this kind of protrusion 7 is big, and the other end is small, the bellows segment that continuous protrusion 7 is formed and traditional vertical-type bellows segment
Compare, can preferably improve the stroke of bellows so that bellows has more preferable damping performance.
More specifically, first bellows 1 haves three layers altogether, including inner tube, middle tube and outer tube, the internal layer
Pipe, the middle tube and the outer tube are sequentially connected from the inside to the outside, the inner tube, the middle tube and the outer tube
Evenly spaced described raised 7 are equipped with inner surface and outer surface.The inner tube, the middle tube and the outer tube
By the groove between protrusion 7 and protrusion 7 it is mutually nested, press together, can play and further improve whole bellows
The purpose of intensity.Raised 7 outside, which is also wrapped, is preferably provided with rubber layer.The thickness of the rubber layer is preferably 2mm, with to convex
Play 7 to be protected, while play the purpose of enhancing sealing effect.The inner tube, the outer tube and the middle tube use
High pressure compressed forms.Second bellows 2 is preferably also such a structure.
Further, sound insulation and noise reduction layer, the middle tube and described outer are equipped between the inner tube and the middle tube
Damping damping layer is equipped between layer pipe, the sound insulation and noise reduction layer is made of glass fibre, and the damping damping layer is made of rubber.
The setting of such a structure, is conducive to prevent the first bellows 1 under the action of vibration and impact, sharp noise occurs.
Loose, first bellows 1 and second bellows 2 occur under vibrations and impact for protrusion 7 in order to prevent
End be equipped with boss, the vertical section of the boss is trapezoidal.
In addition, the inner wall of first bellows 1 and second bellows 2 is equipped with anti-corrosion layer, it is described corrosion-resistant
Layer is made of polytetrafluoroethylene (PTFE).The setting of anti-corrosion layer, can send out to avoid first wave line pipe 1 under the action of irritative gas
Raw corrosion and damage, are conducive to extend the service life of the damping bellows of the utility model embodiment.
The structure, feature and effect of the utility model are described in detail based on the embodiments shown in the drawings, with
Upper described is only the preferred embodiment of the utility model, but the utility model is to limit practical range shown in drawing, it is every according to
The change that conception according to the utility model is made, or the equivalent embodiment of equivalent variations is revised as, still without departing from specification and figure
When showing covered spirit, it should be within the protection scope of the present utility model.
Claims (8)
1. a kind of damping bellows, it is characterised in that including the first bellows (1), the second bellows (2) and connecting tube (3)；
First bellows (1) and the equal length of second bellows (2), the connecting tube (3) are arranged on described first
Between bellows (1) and second bellows (2), the outside diameter of the connecting tube (3) is less than first bellows (1) and institute
State the outside diameter of the second bellows (2)；
First bellows (1) is connected with casing (4), and second bellows (2) is connected with exhaust pipe (5).
2. damping bellows according to claim 1, it is characterised in that the connecting tube (3) is equipped with parallel in the circumferential
Groove (6).
3. damping bellows according to claim 1, it is characterised in that the material of the connecting tube (3) is rubber, described
The material of first bellows (1) and second bellows (2) is metal.
4. damping bellows according to claim 1, it is characterised in that the outer surface of first bellows (1) is equipped with
Evenly spaced protrusion (7), the vertical section of the protrusion (7) is in U-shaped, including first side, arc-shaped side and second side, institute
State arc-shaped side one end to be connected with the first side, the other end is connected with the second side, the first side and described
Dual side-edge is tilted towards the centerline direction of the arc-shaped side.
5. damping bellows according to claim 4, it is characterised in that first bellows (1) haves three layers altogether, including
Inner tube, middle tube and outer tube, the inner tube, the middle tube and the outer tube are sequentially connected from the inside to the outside, described
It is equipped with inner tube, the inner surface of the middle tube and the outer tube and outer surface evenly spaced raised (7).
6. damping bellows according to claim 5, it is characterised in that be equipped between the inner tube and the middle tube
Sound insulation and noise reduction layer, is equipped with damping damping layer, the sound insulation and noise reduction layer is by glass fibre between the middle tube and the outer tube
It is made, the damping damping layer is made of rubber.
7. damping bellows according to claim 1, it is characterised in that first bellows (1) and second ripple
The end of line pipe (2) is equipped with boss, and the vertical section of the boss is trapezoidal.
8. damping bellows according to claim 1, it is characterised in that first bellows (1) and second ripple
Anti-corrosion layer is equipped with the inner wall of line pipe (2), the anti-corrosion layer is made of polytetrafluoroethylene (PTFE).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721381059.5U CN207328129U (en) | 2017-10-24 | 2017-10-24 | A kind of damping bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721381059.5U CN207328129U (en) | 2017-10-24 | 2017-10-24 | A kind of damping bellows |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207328129U true CN207328129U (en) | 2018-05-08 |
Family
ID=62366049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721381059.5U Expired - Fee Related CN207328129U (en) | 2017-10-24 | 2017-10-24 | A kind of damping bellows |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207328129U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109193504A (en) * | 2018-11-13 | 2019-01-11 | 国家电网有限公司 | A kind of attachment device for indoor flooring arrangement electrical equipment |
| CN111344525A (en) * | 2017-11-21 | 2020-06-26 | 三菱重工制冷空调系统株式会社 | Refrigerating machine |
-
2017
- 2017-10-24 CN CN201721381059.5U patent/CN207328129U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111344525A (en) * | 2017-11-21 | 2020-06-26 | 三菱重工制冷空调系统株式会社 | Refrigerating machine |
| CN109193504A (en) * | 2018-11-13 | 2019-01-11 | 国家电网有限公司 | A kind of attachment device for indoor flooring arrangement electrical equipment |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180508 Termination date: 20201024 |