CN203611469U - Diaphragm plate riveting structure for ERG valve - Google Patents
Diaphragm plate riveting structure for ERG valve Download PDFInfo
- Publication number
- CN203611469U CN203611469U CN201320854787.9U CN201320854787U CN203611469U CN 203611469 U CN203611469 U CN 203611469U CN 201320854787 U CN201320854787 U CN 201320854787U CN 203611469 U CN203611469 U CN 203611469U
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- CN
- China
- Prior art keywords
- diaphragm plate
- valve rod
- top board
- elastic diaphragm
- upper cover
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- Withdrawn - After Issue
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Abstract
The utility model relates to a diaphragm plate riveting structure for an ERG valve. The diaphragm plate riveting structure comprises an upper cover, an elastic diaphragm plate forming a vacuum chamber with the upper cover, a valve rod penetrating the elastic diaphragm plate, a top board sleeving the valve rod, and springs two ends each of which are abutted against the upper cover and the top board. A rivet having a connecting function is disposed between the valve rod and the top board. The top board is disposed above the elastic diaphragm plate. The elastic diaphragm plate sleeves the valve rod through interference fit. A problem of unqualified product performances caused by valve rod deformation during riveting due to large riveting pressure needed to meet requirements of no leakage for diaphragm plate riveting structures for ERG valves at present is solved by the diaphragm plate riveting structure provided by the utility model. The diaphragm plate riveting structure is simple, is capable of effectively saving the production cost and increasing the production efficiency, and can be widely used in the diaphragm plate riveting structure field of the ERG valves.
Description
Technical field
The utility model relates to a kind of EGR valve, relates in particular to a kind of EGR valve diaphragm plate riveted structure.
Background technology
EGR is the triliteral abbreviation of English Exhaust Gas Recirculation, and the meaning is gas recirculation system.Our the ERG valve of research and development is the important component parts in gas recirculation system.EGR valve is mounted on enmgine exhaust, the part waste gas that engine is discharged is introduced engine and is mixed reduction ignition temperature and cylinder interior pressure with fresh air, thus reach the oxynitrides NOx of one of pernicious gas in control engine exhaust set can purifying automobile tail gas device.
EGR valve kind is a lot, wherein mechanical type EGR valve use the earliest, the most extensive, mechanical type EGR valve operation principle: when automobile engine vacuumizes valve vacuum chamber in the time working, make it produce the vacuum of moment, the valve port of exhaust gas recirculation valve is opened, the waste gas part that engine is discharged sends back to the air inlet pipe of engine again by the air admission hole of exhaust gas recirculation valve, again enter cylinder participate in burning with ozone after mixing.Because chemical reaction only just can occur under high-temperature and high-pressure conditions for nitrogen and oxygen, as long as the indoor temperature and pressure of engine combustion can not meet its formation condition, just can stop the generation of NOx.In the waste gas that automobile is got rid of, contain a large amount of CO2, and CO2 can not burn, but can absorb a large amount of heat, thereby the maximum temperature of mist burning in cylinder is reduced, reduce the growing amount of NOx in combustion process, reduce the content of NOx in waste gas, thereby alleviate exhaust emission, reach the limit value requirement of Abgasgesetz to NOx in exhaust.
Form an airtight vacuum chamber, need upper cover and diaphragm plate riveted joint leak-tight gas, nothing gas leakage after diaphragm plate, pressing plate, pad, valve rod riveted joint.In prior art, what the riveted joint of diaphragm plate, valve rod adopted conventionally is upper and lower two pressing plates of diaphragm plate, two gasket constructions, now diaphragm plate is matched in clearance with coordinating of valve rod, during by riveted joint, upper lower platen presses against diaphragm plate makes diaphragm plate be out of shape to reach gapless, nothing gas leakage requirement, but there is larger drawback in this kind of riveting method: need larger riveting pressure just can reach without gas leakage requirement, while easily making valve rod riveted joint, produce distortion, cause the defective of properties of product.
Utility model content
The purpose of this utility model is to provide a kind of EGR valve diaphragm plate riveted structure, solving existing EGR valve diaphragm plate riveted structure needs larger riveting pressure just can reach without gas leakage requirement, while easily making valve rod riveted joint, produce distortion, cause the underproof problem of properties of product.
The utility model solves the technical scheme that its technical problem adopts: a kind of EGR valve diaphragm plate riveted structure, comprise upper cover, elastic diaphragm plate with upper cover composition vacuum chamber, run through the valve rod of elastic diaphragm plate, be set in the top board on valve rod, two ends prop up respectively the stage clip on upper cover and top board, are provided with the rivet of connection function between described valve rod and top board; Described top board is placed on elastic diaphragm plate top, and described elastic diaphragm plate is set on valve rod by interference fit.
Preferably, described valve rod upper end is provided with limited step, described elastic diaphragm sleeve-board arranges near limited step lower edge, on described limited step, be provided with the pad suitable with valve rod, on described elastic diaphragm plate, be provided with the resettlement groove suitable with pad, described pad is placed in resettlement groove and with top board and contacts.
Preferably, described elastic diaphragm plate is diaphragm of rubber plate.
The beneficial effects of the utility model: the matching design by diaphragm plate between valve rod is interference fit, now valve rod is riveted, only need rivet to provide a less rivet force to valve rod, just can guarantee that top board can not jump up and down or come off, this kind of structure not only guaranteed the sealing of product vacuum chamber, also can avoid valve rod to be out of shape because rivet force is excessive.The design of limited step, pad, resettlement groove, makes product structure design more reasonable, guarantees reliability and the service life of properties of product.That diaphragm of rubber plate has is high temperature resistant, corrosion-resistant, waterproof etc. advantage, can meet use needs, further makes structure more reasonable, improves the performance of product.Said structure structure has as compared with the past been used a cover plate and a pad less simultaneously, provides cost savings, and can effectively increase the benefit.
The utility model can effectively solve existing EGR valve diaphragm plate riveted structure needs larger riveting pressure just can reach without gas leakage requirement, while easily making valve rod riveted joint, produce distortion, cause the underproof problem of properties of product, and simple in structure, can effectively save production cost, enhance productivity.
Below with reference to drawings and Examples, the utility model is described in detail.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Embodiment: as shown in Figure 1, a kind of EGR valve diaphragm plate riveted structure, comprise upper cover 1, form the elastic diaphragm plate 2 of vacuum chamber with upper cover 1, run through the valve rod 3 of elastic diaphragm plate 2, be set in the top board 4 on valve rod 3, two ends prop up respectively the stage clip 5 on upper cover 1 and top board 4, are provided with the rivet 6 of connection function between described valve rod 3 and top board 4; Described top board 4 is placed on elastic diaphragm plate 2 tops, and described elastic diaphragm plate 2 is set on valve rod 3 by interference fit.Described valve rod 3 upper ends are provided with limited step 7, described elastic diaphragm plate 2 overlaps near limited step 7 lower edges and arranges, on described limited step 7, be provided with the pad suitable with valve rod 8, on described elastic diaphragm plate 2, be provided with the resettlement groove 9 suitable with pad 8, described pad 8 is placed in resettlement groove 9 and with top board 4 and contacts.Described elastic diaphragm plate 2 is diaphragm of rubber plate.
Claims (3)
1. an EGR valve diaphragm plate riveted structure, comprise upper cover (1), and the elastic diaphragm plate (2) of upper cover (1) composition vacuum chamber, run through the valve rod (3) of elastic diaphragm plate (2), be set in the top board (4) on valve rod (3), two ends prop up respectively the stage clip (5) on upper cover (1) and top board (4), it is characterized in that: the rivet (6) that is provided with connection function between described valve rod (3) and top board (4), described top board (4) is placed on elastic diaphragm plate (2) top, described elastic diaphragm plate (2) is set on valve rod (3) by interference fit.
2. EGR valve diaphragm plate riveted structure according to claim 1, it is characterized in that: described valve rod (3) upper end is provided with limited step (7), described elastic diaphragm plate (2) cover arranges near limited step (7) lower edge, on described limited step (7), be provided with the pad suitable with valve rod (8), on described elastic diaphragm plate (2), be provided with and resettlement groove (9) that pad (8) is suitable, described pad (8) is placed in resettlement groove (9) and with top board (4) and contacts.
3. EGR valve diaphragm plate riveted structure according to claim 1 and 2, is characterized in that: described elastic diaphragm plate (2) is diaphragm of rubber plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320854787.9U CN203611469U (en) | 2013-12-20 | 2013-12-20 | Diaphragm plate riveting structure for ERG valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320854787.9U CN203611469U (en) | 2013-12-20 | 2013-12-20 | Diaphragm plate riveting structure for ERG valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203611469U true CN203611469U (en) | 2014-05-28 |
Family
ID=50764143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320854787.9U Withdrawn - After Issue CN203611469U (en) | 2013-12-20 | 2013-12-20 | Diaphragm plate riveting structure for ERG valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203611469U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103707505A (en) * | 2013-12-20 | 2014-04-09 | 昌辉汽车电器（黄山）股份公司 | Riveted structure for exhaust gas recirculation (EGR) valve diaphragm plate |
| CN104358628A (en) * | 2014-11-28 | 2015-02-18 | 无锡隆盛科技股份有限公司 | Assembling structure for thin film and valve rod of EGR (exhaust gas recirculation) valve |
-
2013
- 2013-12-20 CN CN201320854787.9U patent/CN203611469U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103707505A (en) * | 2013-12-20 | 2014-04-09 | 昌辉汽车电器（黄山）股份公司 | Riveted structure for exhaust gas recirculation (EGR) valve diaphragm plate |
| CN103707505B (en) * | 2013-12-20 | 2016-03-02 | 昌辉汽车电器（黄山）股份公司 | A kind of EGR valve diaphragm plate riveted structure |
| CN104358628A (en) * | 2014-11-28 | 2015-02-18 | 无锡隆盛科技股份有限公司 | Assembling structure for thin film and valve rod of EGR (exhaust gas recirculation) valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140528 Effective date of abandoning: 20160302 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |