CN2709962Y - Negative sensor - Google Patents
Negative sensor Download PDFInfo
- Publication number
- CN2709962Y CN2709962Y CN 200420008074 CN200420008074U CN2709962Y CN 2709962 Y CN2709962 Y CN 2709962Y CN 200420008074 CN200420008074 CN 200420008074 CN 200420008074 U CN200420008074 U CN 200420008074U CN 2709962 Y CN2709962 Y CN 2709962Y
- Authority
- CN
- China
- Prior art keywords
- negative pressure
- diaphragm
- fixed contact
- pressure sensor
- vent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a negative pressure sensor, which can be used directly in testing the speeding signal of a carburetor engine. The negative pressure sensor is composed of a shell, a terminal, a fixed contact, a movable contact, an air-vent junction, a diaphragm, a mechanical spring, an adjusting screw and a negative pressure vent junction, etc. The negative pressure sensor is characterized in that the diaphragm(4) separates the inner part of the shell(1) into two chambers of an upper chamber and a lower chamber. An air-vent junction(9) is arranged in the upper chamber, and a negative pressure vent junction(9) is arranged in the lower chamber. The fixed contact(7)is connected with the terminal(2) through the wire, and the movable contact(8) is arranged on the diaphragm(4) and connected with the terminal(3)through the wire. The mechanical spring(5) is pressed on the diaphragm(4) and makes the movable contact(8) and the fixed contact(7) closed. The adjusting screw(6) is arranged on the negative pressure vent. When the engine speeds, the quickly increasing opening degree of the throttle makes the negative pressure of the air inlet pipe of the gas cylinder decrease quickly, and the negative pressure sensor outputs the signal via the transference of a rubber pipe.
Description
Technical field
The utility model relates to a kind of negative pressure transducer.
Background technology
When application electric technology makes improvements the carburetor type engine, wherein have one to be: electric-control system is according to signal for faster actuate actuators enriching combustion mixture, to improve pick-up of engine.Yet existing sensors as air flowmeter potentiometer and throttle position sensor etc., all can not be directly used in the signal for faster that detects the carburetor type engine.
Summary of the invention
In order to solve the problem that existing sensor can not be directly used in the signal for faster that detects the carburetor type engine, the utility model provides a kind of negative pressure transducer, it has simple in structure, stable and reliable for performance, can be directly used in the signal for faster that detects the carburetor type engine.
The technical solution of the utility model is: it comprises housing, connection terminal, fixed contact, moving contact, blow vent joint, diaphragm, spring, adjustment screw, negative pressure mouth joint, it is characterized in that: diaphragm is separated into two chambers up and down with the inside of housing, a blow vent joint is established in last chamber, a negative pressure mouth joint is established in following chamber, fixed contact is connected with a connection terminal by lead, moving contact is located on the diaphragm and by lead and is connected with another connection terminal, spring is pressed in and makes moving contact and fixed contact closure on the diaphragm, adjusts screw and is located on the negative pressure mouth.
Description of drawings
Accompanying drawing is a structural representation of the present utility model:
Among the figure: the 1-housing; The 2-connection terminal; The 3-connection terminal; The 4-diaphragm; The 5-spring; 6-adjusts screw; The 7-fixed contact; The 8-moving contact; 9-blow vent joint; 10-negative pressure mouth joint.
Embodiment
Among the figure, diaphragm (4) is separated into two chambers up and down with the inside of housing (1), a blow vent joint (9) is established in last chamber, a negative pressure mouth joint (10) is established in following chamber, fixed contact (7) is connected with connection terminal (2) by lead, moving contact (8) is located at diaphragm (4) and upward and by lead is connected with connection terminal (3), and spring (5) is pressed in and makes moving contact (8) and fixed contact (7) closure on the diaphragm (4), adjusts screw (6) and is located on the negative pressure mouth.
The connection terminal of negative pressure transducer is connected with the input end of electric-control system by lead, and blow vent joint (9) is connected with empty filter via sebific duct, and negative pressure mouth joint (10) is connected with carburetor to the draft tube between the cylinder by sebific duct.During engine running, in suction stroke, can produce negative pressure in the draft tube, this negative pressure passes to negative pressure transducer by sebific duct, diaphragm (4) promptly is attracted fast and moves down, moving contact (8) just separates with fixed contact (7), after a suction stroke finishes, diaphragm (4) upwards resets under the effect of spring (5) gradually, but before moving contact (8) and fixed contact (7) closure, next suction stroke begins, diaphragm (4) is attracted fast again and moves down, thereby makes moving contact (8) and fixed contact (7) keep released state.Though engine is (throttle opening is less) when middle low-speed running, negative pressure in the draft tube is bigger, and when running up (throttle opening is bigger), negative pressure in the draft tube is less relatively, but the cylinder intake frequency always is directly proportional with engine speed, and therefore, no matter engine is at middle low-speed running or is running up, as long as the rate of change of negative pressure is less than the setting value of negative pressure transducer in the draft tube, moving contact (8) all can keep released state with fixed contact (7).When engine quickened, because throttle opening increases rapidly, to the negative pressure in the draft tube is diminished rapidly, moving contact (8) was promptly closed with fixed contact (7), and negative pressure transducer just is transferred to electric-control system with signal.
Claims (1)
- A kind of negative pressure transducer, it comprises housing, connection terminal, fixed contact, moving contact, the blow vent joint, diaphragm, spring, adjust screw, negative pressure mouth joint, it is characterized in that: diaphragm (4) is separated into two chambers up and down with the inside of housing (1), a blow vent joint (9) is established in last chamber, a negative pressure mouth joint (10) is established in following chamber, fixed contact (7) is connected with connection terminal (2) by lead, moving contact (8) is located at diaphragm (4) and upward and by lead is connected with connection terminal (3), spring (5) is pressed in and makes moving contact (8) and fixed contact (7) closure on the diaphragm (4), adjusts screw (6) and is located on the negative pressure mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420008074 CN2709962Y (en) | 2004-03-08 | 2004-03-08 | Negative sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420008074 CN2709962Y (en) | 2004-03-08 | 2004-03-08 | Negative sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2709962Y true CN2709962Y (en) | 2005-07-13 |
Family
ID=34848480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420008074 Expired - Fee Related CN2709962Y (en) | 2004-03-08 | 2004-03-08 | Negative sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2709962Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100464173C (en) * | 2007-03-26 | 2009-02-25 | 应城市新世纪摩托车配件有限责任公司 | Internal combustion engine negative pressure sensor |
-
2004
- 2004-03-08 CN CN 200420008074 patent/CN2709962Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100464173C (en) * | 2007-03-26 | 2009-02-25 | 应城市新世纪摩托车配件有限责任公司 | Internal combustion engine negative pressure sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: The Guangxi Zhuang Autonomous Region Longzhou county land tax Residential District No. 42, zip code: 532400 Patentee after: Ji Xiaoqian Address before: No. 59 Baisha street, Longzhou County, the Guangxi Zhuang Autonomous Region: 532400 Patentee before: Ji Xiaoqian |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050713 Termination date: 20110308 |