CN211927122U - Temperature and pressure integrated sensor - Google Patents
Temperature and pressure integrated sensor Download PDFInfo
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- CN211927122U CN211927122U CN202020330164.1U CN202020330164U CN211927122U CN 211927122 U CN211927122 U CN 211927122U CN 202020330164 U CN202020330164 U CN 202020330164U CN 211927122 U CN211927122 U CN 211927122U
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Abstract
The utility model relates to an integrative sensor is pressed to temperature belongs to car sensor preparation technical field. The pressure transmission device comprises a plastic shell, a metal joint, a square sensitive element, a flexible circuit board, a support guide pillar, an outer sealing cavity, a pressure transmission hole, an inner sealing cavity and a limiting cavity. The utility model discloses an on original pressure sensitive sensor's basis, the interpolation has set up a temperature sensitive support, adopt plastics to mould plastics, mould plastics thermistor in the support, guarantee temperature sensor's heat-conduction, can accurate measurement temperature, internally designed assembles square sensitive first and sealed spacing chamber, combine thermistor and the effectual equipment of piezo-resistor, square sensitive first, be used for sensing fluid pressure, electronic circuit, coupled in order to follow square sensitive first received signal, very big simplification assembly structure, the sensor material has been practiced thrift greatly, make the price ratio of temperature-pressure integrative sensor and pressure sensor price add the cost lower alone, temperature-pressure integrative sensor has made things convenient for customer's use greatly.
Description
Technical Field
The utility model relates to an integrative sensor is pressed to temperature belongs to car sensor preparation technical field.
Background
The temperature and pressure integrated sensor is a novel sensor, and conforms to the development of the times. The sensor not only meets the requirements of customers, but also is a breakthrough in the sensor industry, so that the sensor industry has a new research hotspot. The sensor manufacturer can make the temperature and pressure integrated sensor meet the requirements of customers only by improving the production balance of the sensor manufacturer.
The temperature and pressure integrated sensor integrates the double-layer characteristics of a temperature sensor and a pressure sensor, can measure temperature and pressure, and is structurally designed in such a way that a temperature sensor probe is added below the pressure sensor and connected into a whole. The temperature and pressure integrated sensor greatly saves sensor materials, so that the price of the temperature and pressure integrated sensor is cheaper than the sum of the prices of a single temperature sensor and a pressure sensor. The temperature and pressure integrated sensor greatly facilitates the use of customers. With the increasing requirements on energy conservation and emission reduction of automobiles, the rising requirement of the electric automobile is that the temperature and pressure integrated sensor is larger and larger.
However, temperature and pressure integrated sensors used in automobiles are imported at present, and are rarely researched and developed domestically, and particularly, capacitive temperature and pressure integrated pressure sensors are provided. The traditional temperature and pressure integrated sensor is complex in structure, fixed at an external connection part by using an injection molding part, then a thermistor is arranged in a metal shell (a standard part), and heat conduction grease is encapsulated inside the thermistor and then connected with a circuit through a sensitive element hole.
In view of the above-mentioned drawbacks, the present designer is actively making research and innovation to create a temperature and pressure integrated sensor, so that the sensor has industrial value.
Disclosure of Invention
In order to solve the technical problem, the utility model aims at providing an integrative sensor is pressed to temperature.
The utility model discloses an on original pressure sensitive sensor's basis, the interpolation has set up a temperature sensitive support, adopt and mould plastics, fix thermistor in the support, guarantee temperature sensor's heat-conduction, can accurate measurement temperature, internally designed assembles square sensitive first and sealed spacing chamber, combine thermistor and the effectual equipment of piezo-resistor, very big simplification assembly structure, the sensor material has been practiced thrift greatly, make the price ratio of the integrative sensor of warm-pressing and temperature sensor and pressure sensor price add the cost lower, the integrative sensor of warm-pressing has made things convenient for customer's use greatly.
The utility model relates to a temperature and pressure integrated sensor, which comprises a plastic shell and a metal joint,
the metal joint is internally provided with a hollow cylindrical outer sealing cavity, a temperature-sensitive support is arranged in the outer sealing cavity, an outer sealing ring is arranged between the metal joint and the temperature-sensitive support, an inner sealing cavity and a limiting cavity are sequentially arranged at the top of the temperature-sensitive support from bottom to top, a square sensitive element is arranged in the limiting cavity, an inner sealing ring is arranged between the square sensitive element and the temperature-sensitive support, and the inner sealing ring is installed in the inner sealing cavity;
the plastic shell is connected with the temperature-sensitive support, the bottom of the plastic shell is a hollow circuit board cavity, and a flexible circuit board is arranged in the circuit board cavity.
Furthermore, the top surface of the circuit board cavity is provided with a through jack, the top end of the contact pin penetrates through the jack and is communicated with the outside, and the bottom end of the contact pin is connected with the flexible circuit board.
Furthermore, a penetrating pressure intensity conveying hole is formed in the bottom surface of the temperature-sensitive support and used for conveying pressure, a support guide pillar is further arranged at the bottom end of the temperature-sensitive support, and an NTC thermistor is arranged inside the support guide pillar through integral injection molding.
Furthermore, the temperature-sensitive bracket and the bracket guide post are integrally formed by injection molding of polyphenylene sulfide and glass fiber mixture.
Furthermore, the metal joint is made of an aluminum alloy material, the bottom of the metal joint is a through threaded hole, and a support guide pillar at the bottom end of the temperature-sensitive support is communicated with the outside through the threaded hole.
Furthermore, the square sensitive element is pressure sensitive ceramic with the thickness of 0.12-1 mm.
Furthermore, the number of the contact pins is four, two of the contact pins are power pins, one voltage output signal and one resistance signal.
Furthermore, the plastic shell is connected with the temperature-sensitive support through a buckle.
By the scheme, the invention at least has the following advantages:
the utility model discloses an on original pressure sensitive sensor's basis, the interpolation has set up a temperature sensitive support, adopt and mould plastics, mould plastics thermistor into a support, guarantee temperature sensor's heat-conduction, can accurate measurement temperature, internally designed assembles square sensitive first and sealed spacing chamber, with the effectual equipment cooperation of thermistor and pressure sensitive resistor, integrated a whole, very big simplification assembly structure, the sensor material has been practiced thrift greatly, make the price ratio of temperature and pressure sensor and the price add the cost is lower alone for the integrative sensor of temperature and pressure, the integrative sensor of temperature and pressure has made things convenient for customer's use greatly.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood and to be implemented in accordance with the content of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate a certain embodiment of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of the integral structure of the temperature and pressure integrated sensor of the present invention;
FIG. 2 is a schematic diagram of the explosion structure of the temperature and pressure integrated sensor of the present invention;
FIG. 3 is a schematic structural diagram of a plastic housing of the temperature and pressure integrated sensor of the present invention;
fig. 4 is a schematic structural diagram of a metal joint in the temperature and pressure integrated sensor of the present invention;
FIG. 5 is a schematic structural view of a temperature-sensitive support in the temperature-pressure integrated sensor of the present invention;
wherein, in the figure, 1, a plastic shell; 2. a metal joint; 3. a temperature-sensitive support; 4. an outer sealing ring; 5. an inner seal ring; 6. a square sensitive element; 7. a flexible circuit board; 8. inserting a pin; 9. a bracket guide post; 10. a circuit board cavity; 11. a jack; 12. an outer seal cavity; 13. a pressure transfer aperture; 14. an inner sealed cavity; 15. and a limiting cavity.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Referring to fig. 1 and 2, a temperature and pressure integrated sensor according to a preferred embodiment of the present invention comprises a plastic housing 1 and a metal joint 2, the metal joint 2 is internally provided with a hollow cylindrical outer sealed cavity 12, a temperature sensitive support 3 is arranged in the outer sealed cavity 12, a through pressure transmitting hole 13 is arranged on the bottom surface of the temperature sensitive support 3 for transmitting pressure, the bottom end of the temperature sensitive support 3 is further provided with a support guide pillar 9, the support guide pillar 9 is internally provided with an NTC thermistor by integral injection molding, the temperature sensitive support 3 and the support guide pillar 9 are integrally injection molded by polyphenylene sulfide and glass fiber mixture, an outer seal ring 4 is arranged between the metal joint 2 and the temperature sensitive support 3, the metal joint 2 is made of aluminum alloy material, the bottom is a through threaded hole, the support guide pillar 9 at the bottom end of the temperature sensitive support 3 is communicated with the outside through a threaded hole, an inner sealed cavity 14 and a limiting, a square sensitive element 6 is arranged in the limiting cavity 15, the square sensitive element 6 is pressure sensitive ceramic with the thickness of 0.12-1 mm, an inner sealing ring 5 is arranged between the square sensitive element 6 and the temperature sensitive bracket 3, and the inner sealing ring 5 is arranged in an inner sealing cavity 14; the plastic shell 1 is connected with the temperature-sensitive support 3, the bottom of the plastic shell 1 is a hollow circuit board cavity 10, and a flexible circuit board 7 is arranged in the circuit board cavity 10. The top surface of the circuit board cavity 10 is provided with a through jack 11, the top end of the contact pin 8 penetrates through the jack 11 to be communicated with the outside, the bottom end of the contact pin is connected with the flexible circuit board 7, the number of the contact pins 8 is four, two of the contact pins are power pins, one voltage output signal and one resistance signal, and the plastic shell 1 is connected with the temperature-sensitive support 3 through a buckle.
The structure principle of the utility model is as follows:
the utility model discloses mould plastics thermistor and temperature sensitive support 3 into a whole, support guide pillar 9 is linked together through 2 screw holes of metal joint and outside, and output line welding is on flexible line way board 7. The metal joint 2 and the temperature-sensitive bracket 3 are sealed by an outer sealing ring 4. Pressure acts on the square sensing element 6 through a pressure transmission hole 13 on the temperature-sensitive bracket 3, the temperature-sensitive bracket 3 and the square sensing element 6 are sealed by an inner sealing ring 5, the square sensing element 6 is used for sensing fluid pressure, and an electronic circuit is coupled to receive signals from the square sensing element 6.
The metal joint 2 is made of aluminum alloy, an outer sealing cavity 12 is designed inside the metal joint, and the size of a groove is designed according to static sealing.
The injection molding is adopted, the thermistor is fixed in the temperature-sensitive support 3, the heat conduction of the temperature sensor is guaranteed, the temperature can be accurately measured, and the square sensitive element 6 and the limiting cavity 15 are assembled inside the temperature-sensitive support. The temperature-sensitive bracket 3 is made of 60 weight percent of PPS polyphenylene sulfide and 40 weight percent of GF glass fiber material, and a thermistor with a proper B value is selected to be resistant to high temperature, so that a high-temperature-resistant NTC thermistor is selected.
The existing square sensitive element mature process is used.
The outer sealing ring 4 has a dimension of 14.2 × 1.9 mm.
The inner sealing ring 5 has a dimension of 8.5 × 1.8 mm.
The external electrical interface of the plastic shell 1 is provided with 4 contact pins 8, wherein two power pins comprise a voltage output signal and a resistance signal. The plastic shell 1 needs to be subjected to mold opening and injection molding, and the materials are used: 60 weight percent of PPS polyphenylene sulfide and 40 weight percent of GF glass fiber material.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;
and finally: the above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, without departing from the technical principle of the present invention, several modifications and variations can be made, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The utility model provides an integrative sensor is pressed to temperature, moulds shell (1) and metal joint (2) including, its characterized in that:
the metal joint (2) is internally provided with a hollow cylindrical outer sealing cavity (12), a temperature-sensitive support (3) is arranged in the outer sealing cavity (12), an outer sealing ring (4) is arranged between the metal joint (2) and the temperature-sensitive support (3), the top of the temperature-sensitive support (3) is sequentially provided with an inner sealing cavity (14) and a limiting cavity (15) from bottom to top, a square sensitive element (6) is arranged in the limiting cavity (15), an inner sealing ring (5) is arranged between the square sensitive element (6) and the temperature-sensitive support (3), and the inner sealing ring (5) is installed in the inner sealing cavity (14);
the plastic shell (1) is connected with the temperature-sensitive support (3), the bottom of the plastic shell (1) is a hollow circuit board cavity (10), and a flexible circuit board (7) is arranged in the circuit board cavity (10).
2. The integrated temperature and pressure sensor according to claim 1, wherein: the top surface of the circuit board cavity (10) is provided with a through jack (11), the top end of the contact pin (8) penetrates through the jack (11) to be communicated with the outside, and the bottom end of the contact pin is connected with the flexible circuit board (7).
3. The integrated temperature and pressure sensor according to claim 1, wherein: the bottom surface of the temperature-sensitive support (3) is provided with a through pressure intensity transmission hole (13) for transmitting pressure, the bottom end of the temperature-sensitive support (3) is also provided with a support guide pillar (9), and an NTC thermistor is arranged inside the support guide pillar (9) through integral injection molding.
4. The integrated temperature and pressure sensor according to claim 1, wherein: the metal joint (2) is made of aluminum alloy materials, the bottom of the metal joint is a through threaded hole, and a support guide pillar (9) at the bottom end of the temperature-sensitive support (3) is communicated with the outside through the threaded hole.
5. The integrated temperature and pressure sensor according to claim 1, wherein: the square sensitive element (6) is made of pressure-sensitive ceramic with the thickness of 0.12-1 mm according to the pressure intensity.
6. The integrated temperature and pressure sensor according to claim 2, wherein: the number of the contact pins (8) is four, two of the contact pins are power pins, one voltage output signal and one resistance signal.
7. The integrated temperature and pressure sensor according to claim 1, wherein: the plastic shell (1) and the temperature-sensitive support (3) are connected through a buckle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020330164.1U CN211927122U (en) | 2020-03-17 | 2020-03-17 | Temperature and pressure integrated sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020330164.1U CN211927122U (en) | 2020-03-17 | 2020-03-17 | Temperature and pressure integrated sensor |
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| CN211927122U true CN211927122U (en) | 2020-11-13 |
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| CN202020330164.1U Active CN211927122U (en) | 2020-03-17 | 2020-03-17 | Temperature and pressure integrated sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728194A (en) * | 2020-12-31 | 2021-04-30 | 浙江威星智能仪表股份有限公司 | Novel multi-functional gas table valve |
| CN114486056A (en) * | 2021-12-27 | 2022-05-13 | 武汉航空仪表有限责任公司 | Miniaturized pressure sensor |
| CN114719903A (en) * | 2022-03-28 | 2022-07-08 | 河北美泰电子科技有限公司 | Temperature and pressure composite sensor based on metal glass sintered base welding seal |
-
2020
- 2020-03-17 CN CN202020330164.1U patent/CN211927122U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728194A (en) * | 2020-12-31 | 2021-04-30 | 浙江威星智能仪表股份有限公司 | Novel multi-functional gas table valve |
| CN114486056A (en) * | 2021-12-27 | 2022-05-13 | 武汉航空仪表有限责任公司 | Miniaturized pressure sensor |
| CN114719903A (en) * | 2022-03-28 | 2022-07-08 | 河北美泰电子科技有限公司 | Temperature and pressure composite sensor based on metal glass sintered base welding seal |
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