CN204439274U - A kind of baroceptor - Google Patents
A kind of baroceptor Download PDFInfo
- Publication number
- CN204439274U CN204439274U CN201520150924.XU CN201520150924U CN204439274U CN 204439274 U CN204439274 U CN 204439274U CN 201520150924 U CN201520150924 U CN 201520150924U CN 204439274 U CN204439274 U CN 204439274U
- Authority
- CN
- China
- Prior art keywords
- terminal
- thermistor
- upper cover
- cover body
- lower cover
- 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
Links
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to a kind of baroceptor, and its upper cover body and lower cover are the shaping working of plastics of integral molded plastic, and the junction of upper cover body and lower cover is provided with the first Baltimore groove being coated with epoxy resin and carrying out sealing; Lower cover has air intake opening; Two pins of thermistor connect with terminal MAT, the terminal GND of terminal group respectively; Circuit board assembly comprise circuit board and pressure chip IC fixed thereon, pressure chip IC 2. pin connect with terminal 5V, pressure chip IC 6. pin, 8. pin connect with terminal GND, pressure chip IC 7. pin connects with terminal Vout.This baroceptor structure is simple, reasonable in design, has good corrosion resistance, outward appearance not easy damaged, cost is low and thermistor vibration resistance ability is strong feature.
Description
Technical field
The utility model relates to a kind of baroceptor.
Background technology
At present, the overall package of the pressure transducer in motor car engine generally adopts the mode of metal shell to encapsulate, and its weak point is that the cost of metal is high, work flow long (needing machining, electroplating processes), outward appearance easy damaged, corrosion-resistant etc.The sealing of conventional pressure sensor is by the O-ring seal compression between pressure ring and housing, O-ring seal compression between terminal and housing seals sensor, its weak point is that assembly technology difficulty is large, flow process is loaded down with trivial details, cost high (part of needs is many).In addition, the thermistor of conventional pressure sensor is just welded on board pads or inserted sheet, does not have other to fix, and its weak point is that vibration resistance is indifferent.
Utility model content
For the problems referred to above that prior art exists, the purpose of this utility model is to provide a kind ofly has good corrosion resistance, outward appearance not easy damaged, cost is low and thermistor vibration resistance ability is strong baroceptor.
For achieving the above object, the utility model adopts following technical scheme: a kind of baroceptor, comprises upper cover body, lower cover, terminal group, circuit board assembly, thermistor and O-ring seal; Described upper cover body and lower cover are sealed and matched formation hollow cavity, and described circuit board assembly and thermistor are arranged in hollow cavity; Described terminal group comprises four terminals, is terminal 5V respectively, terminal Vout, terminal MAT and terminal GND;
Described upper cover body and lower cover are the shaping working of plastics of integral molded plastic, and the junction of upper cover body and lower cover is provided with the first Baltimore groove being coated with epoxy resin and carrying out sealing; Described lower cover has air intake opening; Two pins of described thermistor connect with terminal MAT, the terminal GND of terminal group respectively; Described circuit board assembly comprises circuit board and pressure chip IC fixed thereon, pressure chip IC 2. pin connect with terminal 5V, pressure chip IC 6. pin, 8. pin connect with terminal GND, pressure chip IC 7. pin connects with terminal Vout.
As optimization, described thermistor is NTC thermistor.
As optimization, in described terminal group, one end of four terminals is stretched out from the sidewall of upper cover body respectively, in the sidewall of described upper cover body, and is arranged in the part that described terminal group four terminals stretch out and is provided with the second Baltimore groove being coated with epoxy resin and carrying out sealing.
Relative to prior art, the utility model tool has the following advantages: the baroceptor structure that the utility model provides is simple, reasonable in design, has good corrosion resistance, outward appearance not easy damaged, cost is low and thermistor vibration resistance ability is strong feature; Introduce thermistor, also make this sensor can carry out the measurement of pressure and temperature, in addition, this baroceptor also makes the structure of engine compacter simultaneously.
Accompanying drawing explanation
The inner structure schematic diagram of the baroceptor that Fig. 1 provides for the utility model.
Fig. 2 is the connection diagram of pressure chip IC and thermistor.
In figure, upper cover body 11, lower cover 12, air intake opening 12a, terminal group 13, first Baltimore groove 14, pressure chip IC21a, circuit board 21b, thermistor 22, O-ring seal 23, silica gel 24.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
In description of the present utility model, it will be appreciated that, orientation or the position relationship of the instruction such as term " interior ", " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
Term " first ", " second " conveniently describe, and do not represent quantity, therefore can not to be interpreted as restriction of the present utility model.
See Fig. 1 to Fig. 2, a kind of baroceptor, comprises upper cover body 11, lower cover 12, terminal group 13, circuit board assembly, thermistor 22 and O-ring seal 23;
Described upper cover body 11 and lower cover 12 are sealed and matched formation hollow cavity, and described circuit board assembly and thermistor 22 are arranged in hollow cavity;
Described terminal group 13 comprises four terminals, is terminal 5V respectively, terminal Vout, terminal MAT and terminal GND, and in terminal group 13, one end of four terminals is stretched out from the sidewall of upper cover body 11 respectively; Described upper cover body 11 and lower cover 12 are the shaping working of plastics of integral molded plastic, integral plastics moulding, have abandoned traditional metalwork, overcome that metalwork cost is high, the processing of work flow lead aircraft, electroplating processes, outward appearance easy damaged, corrosion-resistant deficiency.The junction of upper cover body 11 and lower cover 12 is provided with the first Baltimore groove 14 being coated with epoxy resin and carrying out sealing; By the first Baltimore groove be coated with fluid sealant and carry out the sealing means that alternative conventional pressure sensor compressed by O-ring seal, overcome that assembly technology difficulty is large, flow process is loaded down with trivial details, the deficiency that cost part that is high and that need is many.
In the sidewall of described upper cover body 11, and be positioned at the part that described four terminals stretch out and be provided with the second Baltimore groove being coated with epoxy resin and carrying out sealing; Prevent baroceptor extraneous air and steam from entering in the hollow cavity of baroceptor from the faying face of terminal and upper cover body.
Lower cover 12 has air intake opening 12a; Thermistor 22 is by two-sided welding, then after bending, viscose glue is fixed on circuit board 21b, and the fixing of thermistor then adopts two-sided welding and mode fixing after root bending is substituted conventional single welding, overcomes the problem that thermistor vibration resistance is indifferent.Two pins of thermistor 22 connect with the terminal MAT in terminal group 13, terminal GND respectively; Common thermistor be single-sided welding on circuit boards, other place does not support, the de-usability affecting sensor of easily being shaken by thermistor weld when vibrating.The place of circuit board welding thermistor, when designing, is designed to metallic vias by the utility model, adopts two-sided welding during welding.In addition, thermistor root is vertically turned up 90 degree again after circuit board plane direction bending 90 degree, and the root after bending is coated SP190 epoxy resin and is fixed, and guarantees that thermistor weld does not stress.
Thermistor 22 is preferably NTC thermistor.Namely the function of MAP temperature sensor can be realized.When intake air temperature is low, the resistance value of NTC thermistor is large, and the signal voltage of sensor input ECU is high, and NTC thermistor 20 DEG C of precision are 2%, substantially increase the validity of measurement result.
Circuit board assembly comprises circuit board 21b and pressure chip IC21a fixed thereon, circuit board 21b and upper cover body 11 madial wall contact site silica gel 24 seal, pressure chip IC21a 2. pin connect with terminal 5V, pressure chip IC21a 6. pin, 8. pin connect with terminal GND, pressure chip IC21a 7. pin connects with terminal Vout.
Aforementioned epoxy resins is the DP190 bicomponent epoxy resin that 3M company produces.
The application principle of the utility model baroceptor is as follows:
After the utility model baroceptor is installed, it, according to engine load conditions, is measured the change of pressure in inlet manifold, and converts thereof into voltage signal, the electronic control unit ECU of motor car engine is delivered to, as the foundation determining basic fuel injection amount together with tach signal.ECU is by the force value of rotating speed of automobile engine and inlet manifold, calculate air inflow, according to the number control distributive value of air inflow, the gasoline in cylinder and air is made to carry out accurate proportioning according to optimal air-fuel ratio, fuel combustion is complete, with improve engine dynamic property, reduce oil consumption, reduce toxic emission and carry out fault detect.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (3)
1. a baroceptor, comprises upper cover body (11), lower cover (12), terminal group (13), circuit board assembly, thermistor (22) and O-ring seal (23); Described upper cover body (11) and lower cover (12) are sealed and matched formation hollow cavity, and described circuit board assembly and thermistor (22) are arranged in hollow cavity; Described terminal group (13) comprises four terminals, is terminal 5V respectively, terminal Vout, terminal MAT and terminal GND;
It is characterized in that: described upper cover body (11) and lower cover (12) are the shaping working of plastics of integral molded plastic, the junction of upper cover body (11) and lower cover (12) is provided with the first Baltimore groove (14) being coated with epoxy resin and carrying out sealing;
Described lower cover (12) has air intake opening (12a);
Two pins of described thermistor (22) connect with terminal MAT, the terminal GND of terminal group (13) respectively;
Described circuit board assembly comprises circuit board (21b) and pressure chip IC(21a fixed thereon), pressure chip IC(21a) 2. pin connect with terminal 5V, pressure chip IC(21a) 6. pin, 8. pin connect with terminal GND, pressure chip IC(21a) 7. pin connect with terminal Vout.
2. baroceptor as claimed in claim 1, is characterized in that: described thermistor (22) is NTC thermistor.
3. baroceptor as claimed in claim 1 or 2, it is characterized in that: in described terminal group (13), one end of four terminals is stretched out from the sidewall of upper cover body (11) respectively, in the sidewall of described upper cover body (11), and be arranged in described terminal group (13) four parts that terminal stretches out and be provided with and be coated with epoxy resin the second Baltimore groove of carrying out sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520150924.XU CN204439274U (en) | 2015-03-17 | 2015-03-17 | A kind of baroceptor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520150924.XU CN204439274U (en) | 2015-03-17 | 2015-03-17 | A kind of baroceptor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204439274U true CN204439274U (en) | 2015-07-01 |
Family
ID=53607127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520150924.XU Expired - Fee Related CN204439274U (en) | 2015-03-17 | 2015-03-17 | A kind of baroceptor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204439274U (en) |
-
2015
- 2015-03-17 CN CN201520150924.XU patent/CN204439274U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204439275U (en) | A kind of pressure transducer with two individual cavity | |
| CN204439134U (en) | A kind of corrosion-resistant baroceptor detected for inlet manifold | |
| CN207570605U (en) | A kind of air inlet temperature/pressure sensor | |
| CN204439135U (en) | A kind of air inlet temperature/pressure sensor | |
| CN202362110U (en) | Air inlet temperature pressure transducer | |
| CN106032997A (en) | Sensor used for detecting automobile engine air inlet temperature and pressure | |
| CN204439274U (en) | A kind of baroceptor | |
| CN203687987U (en) | Air inlet pressure and temperature sensing device | |
| CN203519065U (en) | Intake-air temperature and manifold pressure sensor | |
| CN106032996A (en) | Pressure sensor with good corrosion resistance performance | |
| CN106033017A (en) | Engine inlet manifold pressure sensor | |
| CN106032998A (en) | Sensor used for detecting automobile inlet manifold temperature and pressure | |
| CN206459700U (en) | Diesel engine admission pressure temperature sensor | |
| CN105067181A (en) | Gas differential pressure sensor | |
| CN204479239U (en) | Air inlet pressure sensor | |
| CN202382899U (en) | Intake manifold pressure sensor | |
| CN201575914U (en) | Air inlet temperature and pressure sensor | |
| CN101922987A (en) | Intake manifold pressure sensor and manufacturing method thereof | |
| CN202562634U (en) | Intake-temperature pressure transducer | |
| CN209524967U (en) | A kind of flange form ultrasonic flowmeter outer housing | |
| CN209145943U (en) | It is a kind of for testing the experimental rig of fan performance | |
| CN204327346U (en) | Intake manifold | |
| CN203629708U (en) | Air inlet temperature and dual-pressure sensor | |
| CN207081448U (en) | A kind of inlet manifold sensor | |
| CN204855087U (en) | Intake pressure sensor |
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: 20150701 Termination date: 20160317 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |