CN203296984U - Oil pressure pulsation damper - Google Patents
Oil pressure pulsation damper Download PDFInfo
- Publication number
- CN203296984U CN203296984U CN2013203775313U CN201320377531U CN203296984U CN 203296984 U CN203296984 U CN 203296984U CN 2013203775313 U CN2013203775313 U CN 2013203775313U CN 201320377531 U CN201320377531 U CN 201320377531U CN 203296984 U CN203296984 U CN 203296984U
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- spring
- diaphragm
- oil pressure
- housing
- pressure pulsation
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Abstract
An oil pressure pulsation damper mainly solves the problem that an existing oil pressure pulsation damper is poor in sealing effect and noise reducing effect. The oil pressure pulsation damper is characterized in that a diaphragm (2) is of an integral structure, a first spring cup (8) and a second spring cup (9) are attached to two sides of the diaphragm (2) respectively, a main spring (3) is arranged between the first spring cup (8) and a spring seat (4), an auxiliary spring (10) is arranged in an oil chamber (7) of a shell (1), and two ends of the auxiliary spring (10) contact with the second spring cup (9) and the upper wall of the shell (1) respectively. The oil pressure pulsation damper is provided with a double-spring structure and has the advantages of fine sealing effect and noise reducing effect.
Description
Technical field
The utility model relates to the hydraulic shock absorber in a kind of motor fuel transfer system, is specifically related to a kind of oil pressure pulsation damper.
Background technique
In the motor fuel transfer system, when the oil sprayer injected fuel, can produce the fuel pressure pulsation in conveyance conduit, oil pressure pulsation damper is to make the fuel pressure attenuate pulsations, eliminate the fuel oil transmission of pulsing in conveyance conduit, and then the reduction noise, coordinate oil pressure regulator to stablize oil pressure, make fuel injection quantity accurate.Existing oil pressure pulsation damper mainly is comprised of housing, diaphragm, spring, the first spring seat, the second spring seat and adjusting screw, diaphragm is divided into grease chamber and two chambers of air chamber with housing, be provided with spring in air chamber, adjusting screw is connected with the first spring seat, diaphragm is fixed on the second spring seat, and spring is between the first spring seat and the second spring seat.When oil pressure in oil circuit was unstable, fuel pressure acted on diaphragm, then through diaphragm, is delivered to spring, and spring falls the fluctuation absorption of oil pressure, makes oil pressure become steady.There is following technological deficiency in this oil pressure pulsation damper:, owing to needing sealing between grease chamber and air chamber, adding man-hour, need to be on diaphragm perforate and the second spring seat is passed diaphragm, easily leak, sealing effect is poor; In addition, only adopt a spring to absorb pressure fluctuation, still some pulsation retains, and noise reduction is poor.
The model utility content
In order to overcome the deficiency that existing oil pressure pulsation damper sealing effect is poor and noise reduction is poor, the utility model provides a kind of oil pressure pulsation damper, and this oil pressure pulsation damper adopts double-spring structure, has the characteristics of good sealing effect and excellent noise reduction effect.
The technical solution of the utility model is: a kind of oil pressure pulsation damper comprises housing, diaphragm, main spring, spring seat and adjusting screw, adjusting screw is arranged on housing and with spring seat and is connected, the edge of diaphragm is squeezed in the wrinkle of housing, diaphragm is divided into air chamber and grease chamber with housing, main spring is positioned at air chamber, diaphragm is overall structure, and the both sides of diaphragm are affixed respectively the first spring cup and the second spring cup, and main spring is arranged between the first spring cup and spring seat; Be provided with secondary spring in the grease chamber of housing, the two ends of secondary spring contact with the upper wall of the second spring cup and housing respectively.
The upper wall of described housing is provided with the positioning table that inwardly concaves, and secondary spring is enclosed within on positioning table.
The elasticity coefficient of described secondary spring is less than the elasticity coefficient of main spring.
The utlity model has following beneficial effect: owing to taking such scheme, diaphragm adopts overall structure, has improved the sealability of diaphragm, has also improved the intensity of diaphragm simultaneously, makes diaphragm not fragile; Owing to having increased secondary spring, when work, the pulse that grease chamber's inner fluid produces makes the diaphragm vibration-generating, and then change into the double vibrations of main spring and secondary spring, effectively absorbed the pulsation of fluid in pipeline, secondary spring has also played certain damping function to the fluid of pulsation in grease chamber simultaneously, makes oil pressure more steady, has sealing effect and noise reduction preferably.
Description of drawings
Accompanying drawing 1 is structure sectional view of the present utility model.
1-housing in figure, 2-diaphragm, 3-main spring, 4-spring seat, 5-adjusting screw, 6-air chamber, 7-grease chamber, 8-the first spring cup, 9-the second spring cup, 10-secondary spring, 11-positioning table.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, a kind of oil pressure pulsation damper comprises housing 1, diaphragm 2, main spring 3, spring seat 4 and adjusting screw 5, adjusting screw 5 is arranged on housing 1 and with spring seat 4 and is connected, the edge of diaphragm 2 is squeezed in the wrinkle of housing 1, diaphragm 2 is divided into air chamber 6 and grease chamber 7 with housing 1, and main spring 3 is positioned at air chamber 6, and diaphragm 2 is overall structure, the both sides of diaphragm 2 are affixed respectively the first spring cup 8 and the second spring cup 9, and main spring 3 is arranged between the first spring cup 8 and spring seat 4; Be provided with secondary spring 10 in the grease chamber 7 of housing 1, the two ends of secondary spring 10 contact with the upper wall of the second spring cup 9 and housing 1 respectively.Owing to taking technique scheme, diaphragm 2 adopts overall structure, has improved the sealability of diaphragm 2, has also improved the intensity of diaphragm 2 simultaneously, makes diaphragm 2 not fragile; Owing to having increased secondary spring 10, when work, the pulse that grease chamber's 7 inner fluids produce makes diaphragm 2 vibration-generatings, and then change into the double vibrations of main spring 3 and secondary spring 10, and effectively having absorbed the pulsation of fluid in pipeline, 7 interior fluid to pulsation have also played certain damping function to secondary spring 10 in grease chamber simultaneously, compare with background technique, strengthen the absorptivity to pressure fluctuation, made oil pressure more steady, had sealing effect and noise reduction preferably.
The upper wall of described housing 1 is provided with the positioning table 11 that inwardly concaves, and secondary spring 10 is enclosed within on positioning table 11.11 pairs of secondary springs 10 of positioning table play the effect of location, avoid secondary spring 10 plaies.Positioning table 11 is by impact briquetting, and is simple in structure, easy to process.
The elasticity coefficient of described secondary spring 10 is less than the elasticity coefficient of main spring 3.When selecting secondary spring 10, the elastic force of general secondary spring 10 adds that the pressure of fluid equals the elastic force of main spring 3, during work, and diaphragm 2 stressed less, diaphragm 2 is not fragile, makes diaphragm 2 have long working life.
Claims (3)
1. oil pressure pulsation damper, comprise housing (1), diaphragm (2), main spring (3), spring seat (4) and adjusting screw (5), adjusting screw (5) is arranged on housing (1) upward and with spring seat (4), is connected, the edge of diaphragm (2) is squeezed in the wrinkle of housing (1), diaphragm (2) is divided into air chamber (6) and grease chamber (7) with housing (1), main spring (3) is positioned at air chamber (6), it is characterized in that: diaphragm (2) is overall structure, the both sides of diaphragm (2) are affixed respectively the first spring cup (8) and the second spring cup (9), main spring (3) is arranged between the first spring cup (8) and spring seat (4), be provided with secondary spring (10) in the grease chamber (7) of housing (1), the two ends of secondary spring (10) contact with the upper wall of the second spring cup (9) and housing (1) respectively.
2. a kind of oil pressure pulsation damper according to claim 1, it is characterized in that: the upper wall of described housing (1) is provided with the positioning table (11) that inwardly concaves, and secondary spring (10) is enclosed within on positioning table (11).
3. a kind of oil pressure pulsation damper according to claim 1, it is characterized in that: the elasticity coefficient of described secondary spring (10) is less than the elasticity coefficient of main spring (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203775313U CN203296984U (en) | 2013-06-27 | 2013-06-27 | Oil pressure pulsation damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203775313U CN203296984U (en) | 2013-06-27 | 2013-06-27 | Oil pressure pulsation damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203296984U true CN203296984U (en) | 2013-11-20 |
Family
ID=49572998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203775313U Expired - Fee Related CN203296984U (en) | 2013-06-27 | 2013-06-27 | Oil pressure pulsation damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203296984U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107842705A (en) * | 2016-09-20 | 2018-03-27 | 北京汽车动力总成有限公司 | A kind of machine oil pulse buffer and automobile |
-
2013
- 2013-06-27 CN CN2013203775313U patent/CN203296984U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107842705A (en) * | 2016-09-20 | 2018-03-27 | 北京汽车动力总成有限公司 | A kind of machine oil pulse buffer and automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20150627 |
|
| EXPY | Termination of patent right or utility model |