CN201761335U - Sealing expansion piece at cavity of automobile body - Google Patents
Sealing expansion piece at cavity of automobile body Download PDFInfo
- Publication number
- CN201761335U CN201761335U CN2010201630388U CN201020163038U CN201761335U CN 201761335 U CN201761335 U CN 201761335U CN 2010201630388 U CN2010201630388 U CN 2010201630388U CN 201020163038 U CN201020163038 U CN 201020163038U CN 201761335 U CN201761335 U CN 201761335U
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- support
- cavity
- automobile body
- sealing
- block
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Abstract
The utility model provides a sealing expansion piece at a cavity of an automobile body, which belongs to the technical field of automobiles and solves the problem that a separated sealing material of the traditional cavity of the automobile body has poorer flame-retardant performance. The sealing expansion piece at the cavity of the automobile body comprises a body made of plastic, wherein the body consists of a bracket and a support block; the bracket is cylindrical; the support block is filled inside the bracket; and a connecting structure connected to the automobile body is arranged on the outer side of the bracket. The utility model has the advantages of favorable connecting, sealing, flame-retardant, environment-friendly performances and the like.
Description
Technical field
The utility model belongs to automobile technical field, relates to a kind of sealed expansion spare, particularly the sealed expansion spare at auto body cavity place.
Background technology
For car, NVH (noise, vibration and traveling comfort) performance is one of major criterion of weighing class and brand, becomes the important counterweight of the various brands vehicle market competitiveness.The NVH performance of car load can promote by ACTIVE CONTROL and Passive Control dual mode, aspect Passive Control, because the difficulty that body structure is changed is bigger,, operate simple relatively and necessary so it is more to have an application of material of NVH effect (sound-absorbing, sound insulation, vibration damping, sealing).
Analyze from the structure of vehicle body, have some osed top casing strength beam structures on the body side wall of welding after finishing, promptly so-called " bypass cavity structure " is as threshold, precedingly enclose with gusset etc.Cavity is except meeting transfer car external noise, as engine noise, freeing pipe noise, outside wind is made an uproar and tire is made an uproar, when galloping, also can form High Speed Airflow Within in these cavitys, produces noise and vibration.Therefore, the bypass cavity is carried out obstruction seals is one of means that promote car load NVH performance to Material Used.
Cavity obstruction seals material require is installed in vehicle is welded operation, and the flame retardance of present applied High molecular material is relatively poor, when causing material in vehicle is welded operation, to use, because the grease that spark that electric welding produces and vehicle body steel plate bring in punching course, the phenomenon of pilot combustion vehicle body can appear.
Chinese patent CN1199678A " a kind of damping expansion film with autohension " that provide for example, it carries out conventional mixing slice production with base-material, modifier, tackifier, foaming system, extending agent and fire retardant according to given percentage by weight and conventional charging sequence and forms on rubber mixing machine.As can be seen, it is the mono-schistose texture, does not paste and is fastened in structure on the vehicle body owing to do not have, and its connectivity robustness is not high.
Summary of the invention
The purpose of this utility model is at existing in prior technology the problems referred to above, provides a kind of and is connected firmly, the sealed expansion spare at the auto body cavity place of good airproof performance.
The purpose of this utility model can realize by following technical proposal: the sealed expansion spare at a kind of auto body cavity place, comprise a body of making by plastic material, it is characterized in that, described body is made up of support and back-up block, support is tubular, above-mentioned back-up block is filled in internal stent, and has the connection structure that can be connected on the vehicle body in the support outside.
This sealed expansion part is connected in the gap location of auto body cavity, to this gap location shutoff, realizes that bodywork cavity is in sealing state by it.
Connection structure on the support can be connected on the vehicle body firmly, and back-up block can support support, makes support have the trend of replying its original shape all the time after stressed.
In the sealed expansion spare at above-mentioned auto body cavity place, described support is made by elastomeric material, and adding has the fire retardant composition in elastomeric material.
Such structure makes support can not only play sealing function and can also prevent the support burning.
In the sealed expansion spare at above-mentioned auto body cavity place, the percentage by weight of rubber and fire retardant is 1 in the described support: 3%-5%.Flame resistance is also relatively good have under the prerequisite of reasonable sealing fillibility at the support of making under this ratio before.
In the sealed expansion spare at above-mentioned auto body cavity place, described fire retardant is phosphorus or nitrogen.
In the sealed expansion spare at above-mentioned auto body cavity place, described back-up block adopts flexible material to make.The back-up block of flexible material can not only support support, and can also make support have the trend of replying original shape all the time behind support force.
In the sealed expansion spare at above-mentioned auto body cavity place, described back-up block adopts nylon material to make.The back-up block that adopts nylon material to make has good resistance to abrasion, self lubricity, and its mechanical strength is higher.
In the sealed expansion spare at above-mentioned auto body cavity place, described back-up block adopts plastic material to make.
In the sealed expansion spare at above-mentioned auto body cavity place, described connection structure is at least two buckles that are connected in the support outside.Support can easily be connected on the vehicle body by buckle.
Compared with prior art, the sealed expansion spare at this auto body cavity place is because support adopt to add the plastic material that fire retardant is arranged, so it has reasonable filling sealing property and also has reasonable flame resistance outward.Simultaneously, this expansion piece can be positioned on the vehicle body firmly, make support can be resisted against the place, slit of bodywork cavity firmly by the back-up block in the support by buckle.
Description of drawings
Fig. 1 is that the sealed expansion spare at this auto body cavity place is connected in the structural representation on the vehicle body.
Among the figure, 1, support; 2, back-up block; 3, buckle; 4, vehicle body.
The specific embodiment
As shown in Figure 1, the sealed expansion spare at this auto body cavity place is connected in vehicle body 4 in-to-in cavity places, seals by its gap with vehicle body 4 cavity places.It is made up of support 1 and back-up block 2.
Back-up block 2 adopts flexible material to make, and in the present embodiment, back-up block 2 adopts nylon material to make; Certainly, according to actual conditions, it also is feasible that back-up block 2 adopts plastic material to make.
Back-up block 2 is filled in support 1 inside and it and support 1 inner tight and fits, and has the connection structure that can be connected on the vehicle body 4 in support 1 outside.Connection structure is at least two buckles 3 that are connected in support 1 outside.
This expansion piece is arranged at the inner chamber place of vehicle body 4 cavitys, and the buckle 3 by support 1 outside is fastened on the vehicle body 4, and the place, slit that support 1 fits in vehicle body realizes sealing.
Claims (2)
1. the sealed expansion spare at an auto body cavity place, comprise a body of making by plastic material, it is characterized in that, described body is made up of support (1) and back-up block (2), support (1) is tubular, above-mentioned back-up block (2) is filled in support (1) inside, and has the connection structure that can be connected on the vehicle body (4) in support (1) outside.
2. the sealed expansion spare at auto body cavity according to claim 1 place is characterized in that, described connection structure is for being connected at least two buckles (3) outside the support (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201630388U CN201761335U (en) | 2010-04-19 | 2010-04-19 | Sealing expansion piece at cavity of automobile body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201630388U CN201761335U (en) | 2010-04-19 | 2010-04-19 | Sealing expansion piece at cavity of automobile body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201761335U true CN201761335U (en) | 2011-03-16 |
Family
ID=43713942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201630388U Expired - Fee Related CN201761335U (en) | 2010-04-19 | 2010-04-19 | Sealing expansion piece at cavity of automobile body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201761335U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102259443A (en) * | 2011-04-13 | 2011-11-30 | 浙江吉利汽车研究院有限公司 | Automobile cavity blocking slab rubber and preparation method thereof |
-
2010
- 2010-04-19 CN CN2010201630388U patent/CN201761335U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102259443A (en) * | 2011-04-13 | 2011-11-30 | 浙江吉利汽车研究院有限公司 | Automobile cavity blocking slab rubber and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110316 Termination date: 20140419 |