KR20160133227A - Pressure sensor for vehicle - Google Patents

Pressure sensor for vehicle Download PDF

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Publication number
KR20160133227A
KR20160133227A KR1020150066012A KR20150066012A KR20160133227A KR 20160133227 A KR20160133227 A KR 20160133227A KR 1020150066012 A KR1020150066012 A KR 1020150066012A KR 20150066012 A KR20150066012 A KR 20150066012A KR 20160133227 A KR20160133227 A KR 20160133227A
Authority
KR
South Korea
Prior art keywords
housing
pressure
lower housing
pcb
connector
Prior art date
Application number
KR1020150066012A
Other languages
Korean (ko)
Inventor
김태완
장지상
서호철
Original Assignee
세종공업 주식회사
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 세종공업 주식회사 filed Critical 세종공업 주식회사
Priority to KR1020150066012A priority Critical patent/KR20160133227A/en
Publication of KR20160133227A publication Critical patent/KR20160133227A/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G01D21/02—Measuring two or more variables by means not covered by a single other subclass
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/16—Special arrangements for conducting heat from the object to the sensitive element
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/0007—Fluidic connecting means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/0007—Fluidic connecting means
    • G01L19/0038—Fluidic connecting means being part of the housing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/0061—Electrical connection means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/0092—Pressure sensor associated with other sensors, e.g. for measuring acceleration or temperature
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/14—Housings
    • G01L19/142—Multiple part housings
    • G01L19/143—Two part housings

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

A vehicle pressure sensor according to the present invention includes: a PCB having a connector on a top surface and a temperature element on a bottom surface; A thermal pad is provided on a bottom surface of the inner space to provide a surface contact with the bottom surface of the temperature element, A lower housing; An upper housing coupled to cover an upper portion of the lower housing and having an electrode terminal protruded from a bottom surface to be connected to the connector when the lower housing is coupled to the lower housing; And an extension extending upwardly through the bottom of the lower housing and connected to the upper end of the extension to be electrically connected to the PCB by a wire, And a pressure housing having a pressure element to which pressure is applied. The vehicle pressure sensor according to the present invention can perform temperature measurement in real time because the temperature of the housing is instantaneously transmitted to the temperature element and the electrode terminal is connected to the PCB by the operation of assembling the housing, , The assemblability and the airtightness of the housing are improved.

Description

[Technical Field] The present invention relates to a pressure sensor for a vehicle,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pressure sensor for a vehicle, and more particularly, to a pressure sensor for a vehicle that can transmit a temperature applied to a housing more quickly and improve manufacturability.

BACKGROUND ART A pressure sensor is mainly used in a vehicle, a chemical facility, a semiconductor manufacturing facility, or the like for measuring the pressure of a fluid installed on a flow path or a valve side of a fluid. For example, Hydrogen gas or air pressure, exhaust gas pressure in a silencer, and other general industrial pressure gauges from a low pressure to a high pressure.

Such a pressure sensor is constituted by a pressure element provided with a pressure to which the fluid is introduced, which is close to the inlet and the pressure guiding inlet, and the pressure element can be composed of various elements such as a semiconductor chip or a strain gauge. Further, the temperature sensor includes a temperature element installed on the flow path through which the fluid passes and sensing the temperature of the fluid.

Conventionally, since a pressure sensor that senses only the fluid pressure and a temperature sensor that senses only the temperature of the fluid are separately constructed, the pressure sensor occupies an unnecessary space in designing a module for sensing temperature and pressure, Respectively.

In order to solve such a problem, a pressure sensor having both a pressure element and a temperature element has been proposed. However, the temperature element included in the conventional pressure sensor as described above can not indirectly measure the temperature of the housing through the fluid filled in the housing. So that it is difficult to measure the temperature of the housing in real time.

Further, the conventional pressure device has a problem that it takes a long time to connect the electrode terminal to the PCB, and that the housing assembly structure is complicated, which limits the productivity improvement.

KR 10-1081945 B1

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the problems as described above, and it is an object of the present invention to provide a thermoelectric module in which the temperature of the housing can be instantaneously transmitted to the temperature element and the electrode terminal is easily connected to the PCB, A pressure sensor for a vehicle.

According to another aspect of the present invention, there is provided a vehicle pressure sensor comprising: a PCB having a connector on a top surface and a temperature element on a bottom surface; A thermal pad is provided on a bottom surface of the inner space to provide a surface contact with the bottom surface of the temperature element, A lower housing; An upper housing coupled to cover an upper portion of the lower housing and having an electrode terminal protruded from a bottom surface to be connected to the connector when the lower housing is coupled to the lower housing; And an extension extending upwardly through the bottom of the lower housing and connected to the upper end of the extension to be electrically connected to the PCB by a wire, And a pressure housing having a pressure element to which pressure is applied.

A first curling portion bent to cover an upper surface of the upper flange is provided at an upper end of the lower housing, and a pressure portion protruding outward from the upper end of the pressure housing is provided at a lower end of the upper housing. And a second curling portion bent to cover the upper surface of the pressure flange is provided on a bottom surface of the lower housing.

Wherein the upper housing is formed with an upper O-ring groove at a portion contacting the upper surface of the lower housing, the pressure housing has a lower O-ring groove formed at a portion contacting the lower surface of the lower housing, A sealed O-ring is inserted into the groove.

The electrode terminal is made of a metal plate or metal pin having a thickness not less than a reference value and extends vertically downward.

The bottom surface of the lower housing is provided with a support block for supporting a point corresponding to the connector among the bottom surface of the PCB.

On the upper surface of the thermal pad, a seating groove in which a lower end portion of the temperature element is buried is formed.

The vehicle pressure sensor according to the present invention can perform temperature measurement in real time because the temperature of the housing is instantaneously transmitted to the temperature element and the electrode terminal is connected to the PCB by the operation of assembling the housing, , The assemblability and the airtightness of the housing are improved.

1 is a vertical sectional view of a pressure sensor for a vehicle according to the present invention.
FIGS. 2 and 3 are cross-sectional views illustrating a process of assembling a pressure sensor for a vehicle according to the present invention.
4 is a cross-sectional view showing a shape in which a connector-mounted portion of the PCB is supported by a support block.
5 is a perspective view of a pressure sensor having a seating groove formed in a thermal pad.

Hereinafter, an embodiment of a pressure sensor for a vehicle according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a vertical cross-sectional view of a pressure sensor for a vehicle according to the present invention, and FIGS. 2 and 3 are cross-sectional views illustrating a process of assembling a pressure sensor for a vehicle according to the present invention.

A vehicle pressure sensor according to the present invention is an apparatus for measuring a pressure of a fluid mounted on a flow path of a fluid having a certain level of pressure such as an exhaust pipe of a vehicle and measures not only the pressure in the flow path but also the temperature in the flow path .

That is, the vehicle pressure sensor according to the present invention includes a lower housing 200 and an upper housing 300, which are coupled in a laminated structure so as to have an inner space in which a printed circuit board (PCB) 100 can be seated, And a pressure housing (400) to which the pressure transmitting material (500) is injected and coupled to the bottom surface of the lower housing (200). A seat 200 is formed on a sidewall of the inner space of the lower housing 200 to receive the edge of the PCB 100. The PCB 100 contacts the lower housing 200 only at the edge of the bottom of the lower housing 200 And the remaining portion remains spaced apart from the bottom surface of the lower housing 200.

The pressure housing 400 includes an extension extending upwardly to penetrate the bottom of the lower housing 200 and a pressure element coupled to the upper end of the extension and electrically connected to the PCB 100 by a wire 600, and the lower portion is installed to be drawn into the oil passage. The pressure device 600 senses the pressure transmitted through the pressure transmitting material 500 and then transmits the sensed pressure signal to the PCB 100 through the wire. And the detailed description thereof will be omitted.

In this case, the temperature sensor 120 for measuring the temperature of the lower housing 200 is mounted on the bottom surface of the PCB 100, and the bottom surface of the temperature sensor 120 is in close contact with the bottom surface of the lower housing 200 And a thermal pad 230 whose upper surface is in close contact with the bottom surface of the temperature element 120 is provided. When the thermal pad 230 is provided between the temperature element 120 and the lower housing 200 as described above, the heat of the lower housing 200 is transmitted to the temperature element 120 instantly through the thermal pad 230. , The temperature inside the flow path can be measured and reflected in real time. That is, when the pressure transmitting material 500 in the pressure housing 400, such as a conventional vehicle pressure sensor, is configured to transmit the temperature of the pressure housing 400 to the temperature element 120, If the heat of the lower housing 200 is transmitted to the temperature element 120 through the thermal pad 230 as in the case of the vehicle pressure sensor according to the present invention, 120, the time required for receiving heat is remarkably shortened, and it is possible to measure and reflect the temperature in the flow channel in real time.

In order to transmit measured values measured by the pressure device 600 and the temperature device 120 to the outside, at least one electrode terminal 310 for electrically connecting the PCB 100 to the outside of the housing must be provided . One end (bottom end in this embodiment) protrudes to the bottom surface of the upper housing 300, and the other end (upper end in the present embodiment) is connected to the upper housing 300, One end protruding from the bottom surface of the upper housing 300 is connected to the PCB 100 and the other end protruding from the upper surface of the upper housing 300 is connected to the external device. The vehicle pressure sensor according to the present invention is further characterized in that the lower end of the electrode terminal 310 is inserted into the connector 110 in the process of coupling the upper housing 300 to the lower housing 200 .

The electrode terminal 310 is formed so that one end of the electrode terminal 310 protruding downward from the vertical direction of the connector 110 protrudes to the bottom surface of the upper housing 300. When the upper housing 300 is mounted on the upper surface of the lower housing 200 One end of the electrode terminal 310 can be inserted into the connector 110 without a separate assembly process. When the electrode terminal 310 is connected to the PCB 100 through the connector 110 only by operating the upper housing 300 to be seated on the lower housing 200, It is advantageous in that the productivity is greatly improved.

In this case, if the electrode terminal 310 is easily bent, one end of the electrode terminal 310 may not be completely inserted into the connector 110. Therefore, the electrode terminal 310 may have a strength higher than a reference value, It is preferable to be formed in a plate shape having a thickness of a certain level or more or a fin shape having a diameter of a certain level or more and not being easily bent. The process of inserting the electrode terminal 310 into the connector 110 will be described in detail with reference to FIG.

The pressure sensor for a vehicle according to the present invention may be connected through a curling process so that each housing can be firmly coupled to itself without a separate fastening unit. The upper housing 300 has an upper flange 320 protruding outwardly and a lower end of the lower housing 200 is provided with a first curling portion 320 bent to cover the upper surface of the upper flange 320, And a second curling portion (210) that is bent to cover an upper surface of the pressure flange (200), and a pressure flange (210) is provided on the upper end of the pressure housing 420) 220 may be provided.

The first curling portion 210 and the second curling portions 420 and 220 are made of a material that can be plastically deformed and are initially extended vertically as shown in FIG. The pressure housing 400 is placed on the lower housing 200 and then bent through a curling process so as to be pressed onto the upper flange 320 and the pressure flange as shown in FIG.

Since the lower housing 200, the upper housing 300, and the pressure housing 400 can be coupled to each other without the separate fastening device, if the housings included in the present invention are integrally connected by the curling process, The sensor manufacturing cost can be reduced and the manufacturing process can be simplified because the lower housing 200 and the upper housing 300 and the pressure housing 400 can be integrally joined by a single curling process.

At this time, if the lower end of the upper housing 300 and the upper end of the pressure housing 400 are simply brought into contact with the lower housing, the coupling portions of the housings may not be completely sealed. The upper housing 300, An upper side O-ring groove 330 is formed at a portion of the lower housing 200 to be in contact with an upper surface of the lower housing 200 and a lower O-ring groove 430 is formed at a position where the pressure housing 400 contacts the lower surface of the lower housing 200, A sealing O-ring 700 may be inserted into the upper O-ring groove 330 and the lower O-ring groove 430.

4 is a cross-sectional view showing a shape in which a portion of the PCB 100 on which the connector 110 is mounted is supported by the support block 240.

The electrode terminal 310 must have a strength higher than a reference value in order for the one end of the electrode terminal 310 to be completely inserted into the connector 110 by only fitting the upper housing 300 to the lower housing 200, The terminal 310 is preferably made of a metal plate or a metal having a thickness equal to or larger than a reference value. Therefore, even if the position of the connector 110 is slightly shifted from the one end of the electrode terminal 310, one end of the electrode terminal 310 can be stably inserted into the connector 110.

One end of the electrode terminal 310 is inserted into the connector 110 while pressing the connector 110 downward in a process in which the upper housing 300 is seated in the lower housing 200, When the PCB 100 is lowered in the process of being inserted into the connector 110, one end of the electrode terminal 310 may not be completely inserted into the connector 110.

Therefore, a support block 240 may be provided on the bottom surface of the lower housing 200 to support a position corresponding to the connector 110 in the bottom surface of the PCB 100. If the support block 240 is provided between the PCB 100 and the lower housing 200 as long as the support block 240 is not damaged, The connector 310 can be more reliably inserted into the connector 110. Of course, if the support block 240 is made of a very hard material such as metal, there is a possibility that the support block 240 damages the PCB 100. Therefore, the support block 240 has a certain level of elasticity It is preferable that it is made of a material.

5 is a perspective view of a pressure sensor in which a seating groove 232 is formed in the thermal pad 230. As shown in FIG.

It is preferable that a contact area between the thermal pad 230 and the temperature element 120 is maximized so that the heat of the lower housing 200 can be transmitted more stably to the temperature element 120. [ The position of the temperature element 120 on the thermal pad 230 is changed when the external vibration is applied to the thermal pad 230 so that the thermal pad 230 and the temperature element 120 are not normally contacted with each other have.

In order to solve such a problem, the pressure sensor for a vehicle according to the present invention may include a mounting groove 232 on the upper surface of the thermal pad 230, where a part of the lower end of the temperature element 120 is buried. The thermal pad 230 is formed on the upper surface of the thermal pad 230. Even if a certain amount of vibration is applied to the thermal pad 230, The temperature of the lower housing 200 can be transferred to the temperature element 120 more quickly because the temperature of the lower housing 200 and the temperature of the lower housing 200 can be kept in normal contact.

Since the inner wall of the seating groove 232 is in contact with the outer end of the temperature element 120 when the seating groove 232 is formed on the thermal pad 230, It is possible to expect an effect that the contact area is increased.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. It will also be appreciated that many modifications and variations will be apparent to those skilled in the art without departing from the scope of the invention.

100: PCB 110: Connector
120: Temperature element 200: Lower housing
202: seat jaw 210: first curling portion
220: second curling portion 230: thermal pad
232: seat groove 240: support block
300: upper housing 310: electrode terminal
320: upper flange 330: upper o-ring groove
400: pressure housing 420: second curling portion
430: Lower side O-ring groove 500: Pressure transmitting material
600: pressure element 700: sealed o-ring

Claims (6)

A PCB having a connector on an upper surface and a temperature element on the bottom;
A thermal pad is provided on a bottom surface of the inner space to provide a surface contact with the bottom surface of the temperature element, A lower housing;
An upper housing coupled to cover an upper portion of the lower housing and having an electrode terminal protruded from a bottom surface to be connected to the connector when the lower housing is coupled to the lower housing; And
An extension extending upward to penetrate through the bottom of the lower housing and being connected to the upper end of the extension and electrically connected to the PCB by a wire, A pressure housing having a pressure element;
And a pressure sensor for detecting a pressure of the vehicle. The method according to claim 1,
An upper flange protruding outward is provided at a lower end of the upper housing,
A first curling portion bent at an upper end of the lower housing to cover an upper surface of the upper flange,
A pressure flange protruding outward is provided at an upper end of the pressure housing,
And a second curling portion bent to cover an upper surface of the pressure flange is provided on a bottom surface of the lower housing. The method of claim 2,
Wherein the upper housing has an upper O-ring groove formed at a portion contacting the upper surface of the lower housing,
Wherein the pressure housing has a lower O-ring groove formed at a portion thereof contacting the bottom surface of the lower housing,
And a sealing O-ring is inserted into the upper O-ring groove and the lower O-ring groove. The method according to claim 1,
Wherein the electrode terminal is made of a metal plate or a metal having a thickness not less than a reference value and extends vertically downward. The method according to claim 1,
Wherein a bottom surface of the lower housing is provided with a support block for supporting a point corresponding to the connector of the bottom surface of the PCB. The method according to claim 1,
And a seating groove in which a part of the lower end of the temperature element is buried is formed on the upper surface of the thermal pad.
KR1020150066012A 2015-05-12 2015-05-12 Pressure sensor for vehicle KR20160133227A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2563486A (en) * 2017-05-04 2018-12-19 Sensata Technologies Inc Integrated pressure and temperature sensor
CN110054141A (en) * 2019-03-27 2019-07-26 西人马联合测控（泉州）科技有限公司 Pressure sensor and its packaging method
CN113728216A (en) * 2019-05-31 2021-11-30 株式会社村田制作所 Sensor device, and sensor system and article provided with same
KR20220106910A (en) * 2021-01-23 2022-08-01 대양전기공업 주식회사 Pressure sensor unit having temperature sensor
CN114878063A (en) * 2022-04-12 2022-08-09 中国第一汽车股份有限公司 Automobile pressure sensor assembling device
KR20230163265A (en) 2022-05-23 2023-11-30 주식회사 코멧센서 Pressure Sensor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101081945B1 (en) 2009-08-31 2011-11-09 세종공업 주식회사 Pressure sensor with temperature-sensing element and mounting structure of the same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101081945B1 (en) 2009-08-31 2011-11-09 세종공업 주식회사 Pressure sensor with temperature-sensing element and mounting structure of the same

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2563486A (en) * 2017-05-04 2018-12-19 Sensata Technologies Inc Integrated pressure and temperature sensor
US10545064B2 (en) 2017-05-04 2020-01-28 Sensata Technologies, Inc. Integrated pressure and temperature sensor
GB2563486B (en) * 2017-05-04 2021-05-05 Sensata Technologies Inc Integrated pressure and temperature sensor
US11105698B2 (en) 2017-05-04 2021-08-31 Sensata Technologies, Inc. Method of assembling a sensing device having a double clinch seal
CN110054141A (en) * 2019-03-27 2019-07-26 西人马联合测控（泉州）科技有限公司 Pressure sensor and its packaging method
CN113728216A (en) * 2019-05-31 2021-11-30 株式会社村田制作所 Sensor device, and sensor system and article provided with same
KR20220106910A (en) * 2021-01-23 2022-08-01 대양전기공업 주식회사 Pressure sensor unit having temperature sensor
CN114878063A (en) * 2022-04-12 2022-08-09 中国第一汽车股份有限公司 Automobile pressure sensor assembling device
CN114878063B (en) * 2022-04-12 2024-03-15 中国第一汽车股份有限公司 Automobile pressure sensor assembly device
KR20230163265A (en) 2022-05-23 2023-11-30 주식회사 코멧센서 Pressure Sensor

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