WO2022230698A1 - 物理量測定装置 - Google Patents
物理量測定装置 Download PDFInfo
- Publication number
- WO2022230698A1 WO2022230698A1 PCT/JP2022/017982 JP2022017982W WO2022230698A1 WO 2022230698 A1 WO2022230698 A1 WO 2022230698A1 JP 2022017982 W JP2022017982 W JP 2022017982W WO 2022230698 A1 WO2022230698 A1 WO 2022230698A1
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- WO
- WIPO (PCT)
- Prior art keywords
- case
- substrate
- support
- physical quantity
- measuring device
- Prior art date
Links
- 239000012530 fluid Substances 0.000 claims abstract description 13
- 239000000758 substrate Substances 0.000 claims description 193
- 238000007789 sealing Methods 0.000 claims description 33
- 238000001514 detection method Methods 0.000 claims description 10
- 210000000078 claw Anatomy 0.000 description 8
- 230000002093 peripheral effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Images
Classifications
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- 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
-
- 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
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/24—Housings ; Casings for instruments
-
- 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
- G01K1/08—Protective devices, e.g. casings
-
- 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
- G01L19/147—Details about the mounting of the sensor to support or covering 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
- G01L19/14—Housings
- G01L19/148—Details about the circuit board integration, e.g. integrated with the diaphragm surface or encapsulation
Definitions
- the present invention relates to a physical quantity measuring device.
- Patent Document 1 a physical quantity measuring device having a structure in which a circuit board is supported by a cylindrical case is known (for example, Patent Document 1, etc.).
- Patent Document 1 a first circuit board is engaged with a stepped portion formed in a cylindrical case, and the first circuit board is sandwiched between a pressing portion of a lid portion and a stepped portion of the cylindrical case. This allows the first circuit board to be reliably held.
- the second circuit board is supported by the first circuit board via connection pins and connectors arranged between the first circuit board and the second circuit board. That is, the second circuit board is not directly supported by the cylindrical case, but is supported via the first circuit board, the connecting pins, and the electronic components of the connector.
- the electronic parts such as the first circuit board, the connecting pins, and the connector are usually not parts that support other members, so there is a possibility that the second circuit board will be insufficiently supported.
- new parts are provided to support the second circuit board, the number of parts increases and the manufacturing process becomes complicated. Therefore, there has been a demand for a structure capable of reliably supporting a plurality of circuit boards without increasing the number of parts.
- An object of the present invention is to provide a physical quantity measuring device capable of reliably supporting a plurality of circuit boards without increasing the number of parts.
- a physical quantity measuring device includes a sensor module having a detection unit that detects a physical quantity of a fluid to be measured, and a first substrate and a second substrate electrically connected to the sensor module and arranged facing each other.
- a plurality of first notches are formed in the first substrate, and a plurality of second notches are formed in the second substrate.
- the first substrate is supported by a second support portion provided in the second case, with the first support portion provided in the first case inserted into the first notch portion. That is, the first substrate is positioned by the first support and supported by the second support.
- the second substrate is supported by the first support provided on the first case, with the second support provided on the second case inserted into the second notch. That is, the second substrate is positioned by the second support and supported by the first support.
- the first board and the second board that constitute the circuit board are positioned and supported by the first support part and the second support part formed integrally with the first case and the second case. Therefore, the first substrate and the second substrate can be reliably supported without increasing the number of parts.
- a physical quantity measuring device includes a sensor module having a detection unit that detects a physical quantity of a fluid to be measured, and a first substrate and a second substrate electrically connected to the sensor module and arranged facing each other. a circuit board, a first case that houses the sensor module and the first board, a second case attached to the first case that houses the second board, and a display provided in the second case.
- the first substrate is formed with a plurality of first notches
- the second substrate is formed with a plurality of second notch portions
- the first case is integrally formed with a plurality of first support portions that are inserted into the first notch portions and support the second substrate
- the support member is integrally formed with a plurality of second support portions that are inserted into the second cutout portions and support the first substrate.
- a plurality of first notches are formed in the first substrate, and a plurality of second notches are formed in the second substrate.
- the first substrate is supported by a second support provided on a support member that holds the display, and a first support provided on the first case is inserted into the first notch. That is, the first substrate is positioned by the first support and supported by the second support.
- the second substrate is supported by the first support provided on the first case and the second support provided on the support member being inserted into the second notch. That is, the second substrate is positioned by the second support and supported by the first support.
- the first board and the second board that constitute the circuit board are positioned and supported by the first support section and the second support section that are integrally formed with the first case and the support member. Therefore, the first substrate and the second substrate can be reliably supported without increasing the number of parts.
- the first case is provided with a contact portion, and an elastic support portion is interposed between the contact portion and the first substrate.
- the elastic support member is interposed between the contact portion of the first case and the first substrate. The tolerance can be absorbed by the elastic support member. Therefore, the first substrate can be reliably supported.
- the plurality of first support portions are formed in a columnar shape protruding toward the second case, and the plurality of second support portions are formed in a columnar shape protruding toward the first case. It is preferably formed in In this configuration, the first and second substrates are supported by the first and second support portions that protrude in a columnar shape, so that the first and second substrates can be supported with a simple structure. .
- a groove portion is formed between the first case and the second case, a body portion is positioned by a plurality of the first support portions and is formed in an annular shape; It is preferable to provide a sealing member having a sealing portion extending from the main body portion to the outer peripheral side and arranged in the groove portion so as to reduce the thickness of the sealing member.
- the main body portion of the sealing member is positioned by the plurality of first support portions, so that displacement of the sealing member can be suppressed when assembling the physical quantity measuring device. Therefore, it is possible to easily assemble the physical quantity measuring device.
- the sealing portion extending so as to be thinner than the main body portion is disposed in the groove formed between the first case and the second case. width can be reduced. Therefore, the thickness of the walls of the first case and the second case required for arranging the sealing member can be reduced, so that the physical quantity measuring device can be miniaturized.
- the body section is supported by the first substrate.
- the body portion of the sealing member can be supported by the first substrate, there is no need to separately provide a structure for supporting the sealing member. Therefore, the structures of the first case and the second case can be simplified.
- FIG. 2 is a perspective view showing the outline of the physical quantity measuring device viewed from a direction different from that of FIG. 1;
- 1 is an exploded perspective view showing an outline of a physical quantity measuring device according to a first embodiment;
- FIG. 4 is an exploded perspective view showing the outline of the physical quantity measuring device viewed from a direction different from that of FIG. 3 ;
- BRIEF DESCRIPTION OF THE DRAWINGS Sectional drawing which shows the outline of the physical-quantity measuring apparatus of 1st Embodiment.
- FIG. 6 is an enlarged cross-sectional view of region VIII in FIG. 5 ;
- FIG. 10 is a perspective view showing an outline of the physical quantity measuring device viewed from a direction different from that of FIG. 9;
- FIG. 12 is an exploded perspective view showing the outline of the physical quantity measuring device viewed from a direction different from that of FIG. 11; Sectional drawing which shows the outline of the physical-quantity measuring apparatus of 2nd Embodiment.
- the front view which shows the outline of the 1st board
- the front view which shows the outline of the 2nd board
- FIG. 1 is a perspective view showing an outline of a physical quantity measuring device 1 of the present embodiment
- FIG. 2 is a perspective view showing an outline of the physical quantity measuring device 1 viewed from a direction different from that of FIG. 1
- FIG. is an exploded perspective view showing an outline of the physical quantity measuring device 1
- FIG. 4 is an exploded perspective view of the physical quantity measuring device 1 viewed from a direction different from that of FIG. 3, and
- FIG. It is a sectional view showing an outline.
- the physical quantity measuring device 1 of the present embodiment is configured as a differential pressure sensor, more specifically, a small digital differential pressure sensor.
- the physical quantity measuring device 1 includes a first case 2, a second case 3, a circuit board 4, a sensor module 5, a base member 61, a port 62, and a sealing member. 7.
- the first case 2 is formed in a square tubular shape and is a member that houses the sensor module 5 and the like.
- the first case 2 has a first case main body 21 and a fitting portion 22 .
- the first case main body 21 is configured to accommodate the sensor module 5 and the like therein.
- the first case body 21 is provided with a first support portion 211 and a contact portion 212 .
- the first support portions 211 are formed in a columnar shape that protrude toward the second case 3 at the four corners of the first case main body 21 . That is, in this embodiment, four first support portions 211 are provided integrally with the first case main body 21 (see FIG. 6).
- the contact portions 212 are provided at diagonal positions of the first case main body 21 inside the first support portion 211 . That is, in the present embodiment, two contact portions 212 are provided in the first case main body 21 . Each contact portion 212 is in contact with an elastic support member 415, which will be described later.
- openings 214 are formed in the first case main body 21 at positions corresponding to external terminal portions 413 provided on the first substrate 41, which will be described later. Thereby, the external terminal portion 413 is configured to be exposed from the outside of the first case 2 . Furthermore, in the present embodiment, a support structure 215 is provided on the inner peripheral side of the first case main body 21 to support the first substrate 41, which will be described later, in contact therewith.
- the fitting portion 22 is a thin portion on the tip end side of the first case main body 21 .
- the fitting portion 22 is configured to be inserted into and fitted to the inner peripheral side of a second case main body 31 of the second case 3, which will be described later.
- a groove portion G is formed between the fitting portion 22 and a second case main body 31 of the second case 3, which will be described later.
- the second case 3 is formed in a rectangular tubular shape like the first case 2 described above, and is a member that houses a second board 42 of the circuit board 4 and the like, which will be described later.
- the second case 3 has a second case main body 31 and a panel sheet 32 and is fitted to the first case 2 described above. That is, in this embodiment, the second case 3 is attached to the first case 2 .
- the second case main body 31 is configured to accommodate the second substrate 42 and the like therein.
- the second case main body 31 is provided with a second support portion 311 , an inner wall portion 312 and a projection portion 313 .
- the second case body 31 is formed so as to be flush with the first case body 21 when attached to the first case 2 . Furthermore, a panel sheet 32 is attached to the outer surface of the bottom of the second case main body 31 , that is, the front surface of the second case main body 31 . Although not shown, the panel sheet 32 may display the model number, specifications, etc. of the physical quantity measuring device 1 .
- the second support portions 311 are formed in a columnar shape protruding toward the first case 2 near the four corners of the second case main body 31 . That is, in the present embodiment, four second support portions 311 are provided integrally with the second case main body 31 (see FIG. 7). Further, in the present embodiment, the second support portion 311 is formed so as to be arranged inside the first support portion 211 of the first case 2 described above.
- the inner wall portion 312 is a thick portion on the inner surface side of the second case main body 31, and when the first case 2 and the second case 3 are fitted together, the fitting portion 22 of the first case 2 is fitted. Oppose. That is, the groove G described above is formed between the fitting portion 22 of the first case 2 and the inner wall portion 312 of the second case 3 .
- the protrusion 313 is provided so as to protrude from the bottom of the second case main body 31 in a columnar shape, and is configured to come into contact with the second substrate 42 described later.
- circuit board 4 6 is a front view schematically showing the first substrate 41 and the first case 2
- FIG. 7 is a front view schematically showing the second substrate 42 and the second case 3.
- the circuit board 4 has a first board 41 and a second board 42 arranged facing each other.
- the first board 41 is a board housed in the first case main body 21 as described above.
- first cutouts 411 are formed in the first substrate 41 at positions corresponding to the first support parts 211 of the first case body 21 described above, that is, at four corners. That is, the first substrate 41 has four first cutouts 411 .
- the first substrate 41 is provided with a connector receiving portion 412 , an external terminal portion 413 , an internal terminal portion 414 , and an elastic support member 415 .
- the connector receiving portion 412 is arranged on the surface of the first substrate 41 facing the second substrate 42 .
- the connector receiving portion 412 is configured to be connectable to a connector portion 422 of the second substrate 42, which will be described later. As a result, the first substrate 41 and the second substrate 42 are electrically connected by connecting the connector receiving portion 412 and the connector portion 422 .
- the external terminal portion 413 is arranged at a position corresponding to the opening 214 of the first case body 21 and exposed to the outside of the first case body 21 through the opening 214 .
- the external terminal portion 413 can be connected to wiring for external output, wiring for power supply, and the like. That is, the external terminal portion 413 is configured to include an external output terminal portion and a power supply terminal portion.
- the internal terminal portion 414 is arranged at a position corresponding to the connection pin 55 of the sensor module 5 to be described later, and is configured to be connectable with the connection pin 55 .
- the connection pins 55 are connected to the internal terminal portions 414 , thereby electrically connecting the first substrate 41 and the sensor module 5 . That is, in this embodiment, the first substrate 41 and the second substrate 42 are electrically connected to the sensor module 5 .
- the elastic support member 415 is a spring member made of metal and having a Z shape in cross section. In this embodiment, the elastic support member 415 is inserted between the contact portion 212 of the first case main body 21 and the first board 41 of the circuit board 4 (to be described later) at the diagonal position of the first case main body 21 . It is
- the second board 42 is a board housed in the second case main body 31 as described above.
- the second substrate 42 is formed with second notch portions 421 at positions corresponding to the second support portions 311 of the second case body 31 described above, that is, positions near the four corners. there is That is, the second substrate 42 has four second notch portions 421 formed therein. Thereby, when the second board 42 is housed in the second case main body 31 , the second support portion 311 is inserted through the second notch portion 421 .
- a connector portion 422 is provided on the second substrate 42 .
- the connector portion 422 is arranged at a position corresponding to the connector receiving portion 412 of the first board 41 and is connectable with the connector receiving portion 412 .
- the sensor module 5 includes a sensor substrate 51 , a sensor cover 52 , an electronic component 53 , a detection section 54 and connection pins 55 .
- the sensor substrate 51 is a substrate to which components such as the electronic component 53 and the detection section 54 are attached.
- the sensor substrate 51 is arranged to face the first substrate 41 described above.
- the surface of the sensor substrate 51 on the side of the first substrate 41 is covered with a sensor cover 52 .
- the electronic component 53 is arranged on the surface of the sensor substrate 51 facing the first substrate 41 and covered with the sensor cover 52 .
- the electronic component 53 includes a signal converter or the like that converts and adjusts the signal output from the detection section 54 .
- the detection unit 54 is configured to detect the pressure of the fluid to be measured introduced through the port 62 and output a signal corresponding to the pressure to the electronic component 53 .
- the connection pins 55 are arranged at positions corresponding to the internal terminal portions 414 of the first substrate 41 and configured to be connectable to the internal terminal portions 414 .
- the base member 61 is a plate-shaped member and is attached to the rear surface of the first case main body 21 .
- two ports 62 are attached to the base member 61, and holes (not shown) are formed at positions where the ports 62 are attached.
- a filter (not shown) is inserted on the back side of the base member 61, that is, on the first case main body 21 side.
- the port 62 is formed in a tubular shape, and the fluid to be measured is introduced. As a result, the fluid to be measured is introduced into the space inside the first case main body 21 where the detection unit 54 is arranged via the port 62 and the filter described above.
- the physical quantity measuring device 1 is configured as a differential pressure sensor that detects the differential pressure of the fluid to be measured introduced into the two ports 62 .
- the configuration is not limited to the above configuration, and for example, the filter may not be inserted on the back side of the base member 61 .
- FIG. 8 is a cross-sectional view enlarging the VIII region in FIG.
- the sealing member 7 is made of rubber or a resin member and is a member that seals the space between the first case 2 and the second case 3. As shown in FIG. Thereby, when the first case 2 and the second case 3 are fitted together, the space inside the first case 2 and the second case 3 can be sealed.
- the sealing member 7 has a body portion 71 and a sealing portion 72 .
- the body portion 71 has a quadrangular annular shape. Further, in this embodiment, the main body portion 71 is supported by the first substrate 41 . Accordingly, it is not necessary to separately provide a structure for supporting the body portion 71 of the sealing member 7 in the first case 2 . Further, in the present embodiment, the body portion 71 is arranged outside the first support portions 211 provided at the four corners of the first case body 21 . That is, the body portion 71 is positioned by the four first support portions 211 . As a result, when the physical quantity measuring device 1 is assembled, the position of the sealing member 7 can be suppressed from being displaced, so that the physical quantity measuring device 1 can be easily assembled.
- the sealing portion 72 is provided so as to extend from the main body portion 71 to the outer peripheral side, and is arranged in the groove portion G described above. Thereby, the space between the first case 2 and the second case 3 is sealed. Moreover, in the present embodiment, the sealing portion 72 is formed to be thinner than the main body portion 71 . Thereby, the width of the groove portion G for arranging the sealing portion 72 can be reduced. Therefore, the thickness of the walls of the first case 2 and the second case 3 required for disposing the sealing member 7 can be reduced, so that the physical quantity measuring device 1 can be miniaturized.
- the support structure 215 of the first case 2 abuts on the surface of the first substrate 41 facing the sensor module 5 .
- the first substrate 41 is thereby supported by the first case 2 .
- the surface of the first substrate 41 facing the second substrate 42 abuts on the second support portion 311 inserted into the second notch portion 421 of the second substrate 42 . That is, the first substrate 41 is also supported by the second case 3 .
- the first substrate 41 is sandwiched and supported by the support structure 215 of the first case 2 and the second support portion 311 of the second case 3 .
- the first support portion 211 is inserted through the first notch portion 411 of the first substrate 41 .
- the first substrate 41 is positioned by the first support portion 211 of the first case 2 .
- the first substrate 41 is sandwiched between the first case 2 and the second case 3 and positioned and supported by the first case 2 . Therefore, the first substrate 41 can be reliably supported.
- the projection 313 of the second case 3 contacts the surface of the second substrate 42 facing the bottom of the second case 3 .
- the second substrate 42 is thereby supported by the second case 3 .
- the first support portion 211 inserted into the first notch portion 411 of the first substrate 41 abuts on the surface of the second substrate 42 facing the first substrate 41 . That is, the second substrate 42 is also supported by the first case 2 .
- the second substrate 42 is sandwiched and supported by the protrusion 313 of the second case 3 and the first support 211 of the first case 2 .
- the second support portion 311 is inserted through the second notch portion 421 of the second substrate 42 .
- the second substrate 42 is positioned by the second support portion 311 of the second case 3 .
- the second substrate 42 is sandwiched between the first case 2 and the second case 3 and positioned and supported by the second case 3 . Therefore, the second substrate 42 can be reliably supported.
- the elastic support member 415 configured as a spring member is interposed between the contact portion 212 of the first case 2 and the first substrate 41 .
- the first substrate 41 is urged toward the second case 3 by the elastic support member 415 . Therefore, even if there is manufacturing tolerance in the thickness of the first substrate 41 , the tolerance can be absorbed by the elastic support member 415 . Therefore, the first substrate 41 and the second support portion 311 can be reliably brought into contact with each other, so that the first substrate 41 can be reliably supported.
- the first substrate 41 has four first cutouts 411
- the second substrate 42 has four second cutouts 421 .
- the first substrate 41 is supported by a second support portion 311 provided on the second case 3 and a first support portion 211 provided on the first case 2 inserted through the first notch portion 411 . That is, the first substrate 41 is positioned by the first support portion 211 and supported by the second support portion 311 .
- the second substrate 42 is supported by the first support portion 211 provided on the first case 2, with the second support portion 311 provided on the second case 3 inserted into the second notch portion 421. .
- the second substrate 42 is positioned by the second support portion 311 and supported by the first support portion 211 .
- the first board 41 and the second board 42 that constitute the circuit board 4 are positioned by the first support portion 211 and the second support portion 311 that are integrally formed with the first case 2 and the second case 3. , and supported. Therefore, the first substrate 41 and the second substrate 42 can be reliably supported without increasing the number of parts.
- the elastic support member 415 is interposed between the contact portion 212 of the first case 2 and the first substrate 41. Therefore, if the thickness of the first substrate 41 is , the tolerance can be absorbed by the elastic support member 415 . Therefore, the first substrate 41 can be reliably supported.
- first substrate 41 and the second substrate 42 are supported by the first support portion 211 and the second support portion 311 which are formed to protrude in a columnar shape.
- a second substrate 42 can be supported.
- the body portion 71 of the sealing member 7 is positioned by the four first support portions 211. Therefore, when the physical quantity measuring device 1 is assembled, the position of the sealing member 7 can be prevented from shifting. can be suppressed. Therefore, the physical quantity measuring device 1 can be easily assembled. Furthermore, since the sealing portion 72 extending so as to be thinner than the main body portion 71 is arranged in the groove portion G formed between the first case 2 and the second case 3, the groove portion The width of G can be reduced. Therefore, the thickness of the walls of the first case 2 and the second case 3 required for disposing the sealing member 7 can be reduced, so that the physical quantity measuring device 1 can be miniaturized.
- the first case 2 is provided with the support structure 215 that contacts and supports the first substrate 41 .
- the first substrate 41 is sandwiched between the support structure 215 of the first case 2 and the second support portion 311 of the second case 3, so that the first substrate 41 can be reliably supported.
- the second case 3 is provided with the protrusion 313 that contacts and supports the second substrate 42 .
- the second substrate 42 is sandwiched between the first supporting portion 211 of the first case 2 and the projecting portion 313 of the second case 3, so that the second substrate 42 can be reliably supported.
- the first substrate 41A is supported by the second support portion 93A provided on the support member 9A that holds the display portion 8A, and the second substrate 42A is supported by the second support portion. It differs from the first embodiment in that it is positioned by 93A.
- symbol is attached
- the first substrate 41A of the second embodiment includes a first notch portion 411A, a connector receiving portion 412A, an external terminal portion 413A, an internal terminal portion 414A, and the first substrate 41A of the first embodiment described above. and an elastic support member 415A.
- the second substrate 42A has a second notch portion 421A and a connector portion 422A, like the second substrate 42 of the first embodiment described above.
- FIG. 9 is a perspective view showing an outline of the physical quantity measuring device 1A of the present embodiment
- FIG. 10 is a perspective view showing an outline of the physical quantity measuring device 1A viewed from a direction different from that of FIG. 9
- FIG. 12 is an exploded perspective view showing the outline of the physical quantity measuring device 1A
- FIG. 12 is an exploded perspective view of the physical quantity measuring device 1A viewed from a direction different from FIG. 11,
- FIG. 13 is a physical quantity measuring device 1A. It is a sectional view showing an outline.
- the physical quantity measuring device 1A includes a second case 3A, a circuit board 4A, a display section 8A, and a support member 9A.
- the second case 3A is formed in a rectangular cylindrical shape like the second case 3 described above, and is a member that houses a second board 42A of the circuit board 4A, a display section 8A, a support member 9A, and the like, which will be described later.
- the second case 3A has a second case main body 31A and a panel sheet 32A, and is fitted to the first case 2 described above. That is, the second case 3A is attached to the first case 2 in this embodiment.
- the second case main body 31A is configured such that the second substrate 42A, the display section 8A, the support member 9A and the like can be accommodated therein.
- the second case body 31A is formed so as to be flush with the first case body 21 when attached to the first case 2 . Furthermore, an opening 314A is formed in the bottom of the second case main body 31A. Thereby, the user can visually recognize the display unit 8A through the opening 314A.
- a panel sheet 32A is attached to the outer surface of the bottom of the second case main body 31A, that is, to the front surface of the second case main body 31A so as to surround the opening 314A.
- a button operation portion 315A is provided below the opening portion 314A. In this embodiment, three button operation units 315A are provided, and the user can perform various operations by operating the button operation units 315A.
- the display unit 8A is a liquid crystal display (LCD) that digitally displays the differential pressure detected by the sensor module 5, and is electrically connected to the second board 42A of the circuit board 4A. In the present embodiment, it is fitted into a display holding recess 92A of a support member 9A, which will be described later, and held by being sandwiched between display holding claws 94A. As described above, the differential pressure digitally displayed on the display section 8A is configured to be visible through the opening 314A of the second case main body 31A.
- LCD liquid crystal display
- the support member 9A is a member that is housed in the second case main body 31A and holds the display section 8A. Furthermore, in this embodiment, the support member 9A is configured to position the second substrate 42A and support the first substrate 41A.
- the support member 9A includes a support member body portion 91A, a display holding concave portion 92A, a second support portion 93A, and a display holding claw portion 94A.
- the support member body portion 91A is formed in a substantially rectangular parallelepiped shape and arranged between the display portion 8A and the second substrate 42A.
- a display holding recessed portion 92A recessed according to the shape of the display portion 8A is formed on the surface of the support member body portion 91A on the side of the display portion 8A.
- two display holding claw portions 94A extending toward the display portion 8A are formed on the outer peripheral side of the support member main body portion 91A.
- the support member body portion 91A is configured to hold the display portion 8A by fitting the display portion 8A into the display holding concave portion 92A and holding the display portion 8A between the display holding claw portions 94A. ing.
- the display holding concave portion 92A and the display holding claw portion 94A constitute the display holding portion of the present invention.
- a second support portion 93A protruding toward the first case 2 is provided on the second substrate 42A side of the support member body portion 91A.
- the second support portions 93A are provided so as to protrude toward the first case 2 in the vicinity of the four corners of the support member 9A.
- the second support portion 93A has a claw-shaped support portion 931A and a columnar support portion 932A.
- the claw-shaped support portion 931A is formed in a claw shape integrally with the support member 9A.
- two claw-shaped support portions 931A are provided.
- the columnar support portion 932A is formed in a columnar shape integrally with the support member 9A.
- two columnar support portions 932A are provided. That is, in this embodiment, four second support portions 93A are provided.
- FIG. 14 is a front view showing an outline of the first substrate 41 and the first case 2
- FIG. 15 is a front view showing an outline of the second substrate 42A and the second case 3A.
- the supporting structure 215 of the first case 2 abuts on the surface of the first substrate 41A facing the sensor module 5.
- the first substrate 41A is thereby supported by the first case 2 .
- the surface of the first substrate 41A facing the second substrate 42A abuts on the second support portion 93A inserted through the second notch portion 421A of the second substrate 42A. That is, the first substrate 41A is also supported by the support member 9A housed in the second case 3A. Thus, the first substrate 41A is sandwiched and supported by the support structure 215 of the first case 2 and the second support portion 93A of the support member 9A. Further, the first support portion 211 is inserted through the first notch portion 411A of the first substrate 41A. As a result, the first substrate 41A is positioned by the first support portion 211 of the first case 2 . Thus, in this embodiment, the first substrate 41A is sandwiched between the first case 2 and the support member 9A, and is positioned and supported by the first case 2. As shown in FIG. Therefore, the first substrate 41A can be reliably supported.
- the second substrate 42A contacts the surface of the support member 9A facing the support member main body 91A with the surface of the support member main body 91A opposite to the surface on which the display holding recess 92A is formed. Thereby, the second substrate 42A is supported by the support member 9A. Furthermore, the first support portion 211 inserted into the first notch portion 411A of the first substrate 41A abuts on the surface of the second substrate 42A facing the first substrate 41A. That is, the second substrate 42A is also supported by the first case 2. As shown in FIG. In this manner, the second substrate 42A is sandwiched and supported by the support member 9A and the first support portion 211 of the first case 2 .
- the second support portion 93A is inserted through the second notch portion 421A of the second substrate 42A.
- the second substrate 42A is positioned by the second support portion 93A of the support member 9A.
- the second substrate 42A is sandwiched between the first case 2 and the support member 9A, and is positioned and supported by the support member 9A. Therefore, the second substrate 42A can be reliably supported.
- the first substrate 41A is such that the first supporting portion 211 provided on the first case 2 is inserted into the first notch portion 411A, and the second supporting portion 93A provided on the supporting member 9A. Supported by That is, the first substrate 41A is positioned by the first support portion 211 and supported by the second support portion 93A. Similarly, the second substrate 42A is supported by the first support portion 211 provided in the first case 2, with the second support portion 93A provided on the support member 9A inserted through the second notch portion 421A. That is, the second substrate 42A is positioned by the second support portion 93A and supported by the first support portion 211.
- the first board 41A and the second board 42A that constitute the circuit board 4A are positioned by the first support part 211 and the second support part 93A integrally formed with the first case 2 and the support member 9A, and supported. Therefore, the first substrate 41A and the second substrate 42A can be reliably supported without increasing the number of parts.
- the elastic support members 415 and 415A that contact the contact portion 212 of the first case 2 are Z-shaped in cross section and configured as spring members, but are not limited to this.
- the elastic support member may be configured as a coil spring member as long as it is configured to be able to bias the first substrate toward the second case.
- the present invention also includes a mode in which the elastic support member is not provided.
- first substrates 41 and 41A are housed in the first case 2 in each of the embodiments described above, the present invention is not limited to this.
- the first substrate may be housed in the second case.
- the second substrates 42, 42A were housed in the second cases 3, 3A, but the present invention is not limited to this.
- the second substrate may be housed in the first case.
- the first support portion 211 and the second support portion 311 are formed in a columnar shape, but are not limited to this.
- the first support part and the second support part may have a prism shape, or may have a tubular shape with a hollow interior.
- the second support portion 93A is formed in a claw shape or columnar shape, but is not limited to this.
- the first support part and the second support part may have a prism shape, or may have a tubular shape with a hollow interior.
- first support portions 211 and four second support portions 311 and 93A are provided, but the present invention is not limited to this.
- five or more first support portions and second support portions may be provided, or three or less may be provided, or a plurality of each may be provided.
- the sealing member 7 is configured to include the main body portion 71 formed in a rectangular ring shape and the sealing portion 72 extending outward from the main body portion 71.
- the sealing member may be composed only of the main body portion arranged in the groove formed between the first case and the second case.
- the physical quantity measuring device 1 is configured as a differential pressure sensor that detects the differential pressure of the fluid to be measured introduced into the two ports 62, but is not limited to this.
- the physical quantity measuring device may include one port and be configured as a pressure sensor that detects the pressure of the fluid to be measured introduced into the port, or as a temperature sensor that detects the temperature of the fluid to be measured. Any physical quantity of the fluid to be measured may be detected.
- the first substrates 41 and 41A have the first notch portions 411 and 411A formed at the four corners, but the present invention is not limited to this.
- the first substrate is formed with a plurality of first notches near the central portion, and the first support portion of the first case is inserted through the first notches.
- the position and number of the first notches in the first substrate can be arbitrary.
- the second substrates 42 and 42A have the second cutouts 421 and 421A near the four corners, but the present invention is not limited to this.
- the second substrate is formed with a plurality of second notches near the central portion, and the second support portion of the second case is inserted through the second notches.
- the position and number of the second notches in the second substrate can be arbitrary.
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Abstract
Description
特許文献1では、筒状ケースに形成した段差部に第1回路基板を係合させ、当該第1回路基板を、蓋部の押さえ部と筒状ケースの段差部とで挟持している。これにより、第1回路基板を確実に保持できるようにしている。
この構成では、第1ケースの当接部と第1基板との間には、弾性支持部材が介挿されるので、仮に、第1基板の厚さに製造上の公差が生じていたとしても、その公差を弾性支持部材によって吸収することができる。そのため、第1基板を確実に支持することができる。
この構成では、柱状に突出して形成された第1支持部および第2支持部によって第1基板および第2基板を支持するので、簡素な構造で第1基板および第2基板を支持することができる。
この構成では、封止部材の本体部は、複数の第1支持部によって位置決めされるので、物理量測定装置を組み立てる際に、封止部材の位置がずれることを抑制できる。そのため、物理量測定装置の組み立てを容易にできる。さらに、この構成では、本体部よりも厚さが小さくなるように延出された封止部が、第1ケースと第2ケースとの間に形成された溝部に配置されるので、当該溝部の幅を小さくすることができる。そのため、封止部材を配置するために必要な第1ケースおよび第2ケースの壁部の厚さを小さくできるので、物理量測定装置を小型化することができる。
この構成では、封止部材の本体部を第1基板によって支持できるので、封止部材を支持するための構造を別途設ける必要がない。そのため、第1ケースおよび第2ケースの構造を簡素化することができる。
本発明の第1実施形態に係る物理量測定装置1を図面に基づいて説明する。
図1は、本実施形態の物理量測定装置1の概略を示す斜視図であり、図2は、図1とは別の方向から見た物理量測定装置1の概略を示す斜視図であり、図3は、物理量測定装置1の概略を示す分解斜視図であり、図4は、図3とは別の方向から見た物理量測定装置1の分解斜視図であり、図5は、物理量測定装置1の概略を示す断面図である。なお、本実施形態の物理量測定装置1は、差圧センサ、より具体的には、小型デジタル微差圧センサとして構成される。
図1~図5に示すように、物理量測定装置1は、第1ケース2と、第2ケース3と、回路基板4と、センサモジュール5と、ベース部材61と、ポート62と、封止部材7とを備えている。
第1ケース2は、四角筒状に形成され、センサモジュール5等を収納する部材である。
本実施形態では、第1ケース2は、第1ケース本体21と、嵌合部22とを有する。
第1ケース本体21は、内部にセンサモジュール5等を収納可能に構成されている。本実施形態では、第1ケース本体21には、第1支持部211および当接部212が設けられている。
当接部212は、第1支持部211の内側の位置において、第1ケース本体21の対角位置に設けられている。すなわち、本実施形態では、当接部212は、第1ケース本体21において、2箇所設けられている。そして、それぞれの当接部212は、後述する弾性支持部材415が当接されている。
さらに、本実施形態では、第1ケース本体21の内周側には、後述する第1基板41と当接して支持する支持構造215が設けられている。
さらに、本実施形態では、嵌合部22と、後述する第2ケース3の第2ケース本体31との間には、溝部Gが形成されている。
第2ケース3は、前述した第1ケース2と同様に四角筒状に形成され、後述する回路基板4の第2基板42等を収納する部材である。
本実施形態では、第2ケース3は、第2ケース本体31と、パネルシート32とを有し、前述した第1ケース2に嵌合される。すなわち、本実施形態では、第2ケース3は、第1ケース2に取り付けられる。
第2ケース本体31は、内部に第2基板42等を収納可能に構成されている。本実施形態では、第2ケース本体31には、第2支持部311と、内壁部312と、突起部313とが設けられている。また、第2ケース本体31は、第1ケース2に取り付けられた際に、第1ケース本体21と面一になるように形成されている。さらに、第2ケース本体31の底部の外面側、すなわち、第2ケース本体31の正面には、パネルシート32が貼付されている。なお、パネルシート32には、図示は省略するが、物理量測定装置1の型番や仕様等が表示されていてもよい。
突起部313は、第2ケース本体31の底部から円柱状に突出して設けられており、後述する第2基板42と当接するように構成されている。
図6は、第1基板41および第1ケース2の概略を示す正面図であり、図7は、第2基板42および第2ケース3の概略を示す正面図である。
図3~図7に示すように、回路基板4は、互いに対向して配置される第1基板41および第2基板42を有する。
また、本実施形態では、第1基板41には、コネクタ受部412と、外部端子部413と、内部端子部414と、弾性支持部材415とが設けられている。
コネクタ部422は、前述したように、第1基板41のコネクタ受部412に対応する位置に配置され、当該コネクタ受部412と接続可能とされている。
センサモジュール5は、センサ基板51と、センサカバー52と、電子部品53と、検出部54と、接続ピン55とを備えて構成されている。
センサ基板51は、電子部品53や検出部54等の部品が取り付けられる基板である。本実施形態では、センサ基板51は、前述した第1基板41と対向して配置されている。そして、センサ基板51の第1基板41側の面は、センサカバー52によって覆われている。
検出部54は、ポート62を通じて導入される被測定流体の圧力を検出して、当該圧力に応じた信号を電子部品53に出力可能に構成されている。
接続ピン55は、前述したように、第1基板41の内部端子部414に対応する位置に配置され、当該内部端子部414に接続可能に構成されている。
ベース部材61は、板状に形成された部材であり、第1ケース本体21背面に取り付けられている。本実施形態では、ベース部材61には、ポート62が2つ取り付けられており、当該ポート62が取り付けられた位置には図示略の孔部が形成されている。さらに、ベース部材61の裏側、すなわち第1ケース本体21側には、図示略のフィルタが挿入されている。
ポート62は、筒状に形成され、被測定流体が導入される。これにより、当該ポート62および前述のフィルタを介して、被測定流体が第1ケース本体21の内部において検出部54が配置された空間に導入される。また、本実施形態では、前述したように、ポート62はベース部材61に2つ取り付けられている。すなわち、本実施形態では、物理量測定装置1は、2つのポート62に導入される被測定流体の差圧を検出する差圧センサとして構成されている。
なお、上記構成に限られることはなく、例えば、ベース部材61の裏側にフィルタが挿入されていなくてもよい。
図8は、図5におけるVIII領域を拡大した断面図である。
図5、図6、図8に示すように、封止部材7は、ゴムや樹脂部材により形成され、第1ケース2と第2ケース3との間の空間を封止する部材である。これにより、第1ケース2と第2ケース3とを嵌合させた際に、第1ケース2および第2ケース3の内部の空間を密閉することができる。
本実施形態では、封止部材7は、本体部71と、封止部72とを有する。
また、本実施形態では、本体部71は、第1ケース本体21の四隅に設けられた第1支持部211の外側に配置されている。すなわち、本体部71は、4つの第1支持部211によって位置決めされている。これにより、物理量測定装置1を組み立てる際に、封止部材7の位置がずれることを抑制できるので、物理量測定装置1の組み立てを容易にできる。
また、本実施形態では、封止部72は、本体部71よりも厚さが小さくなるように形成されている。これにより、封止部72を配置するための溝部Gの幅を小さくすることができる。そのため、封止部材7を配置するために必要な第1ケース2および第2ケース3の壁部の厚さを小さくできるので、物理量測定装置1を小型化することができる。
次に、第1基板41および第2基板42の支持構造について説明する。
前述したように、第1基板41は、センサモジュール5と対向する面に第1ケース2の支持構造215が当接する。これにより、第1基板41は、第1ケース2によって支持される。さらに、第1基板41は、第2基板42と対向する面に、第2基板42の第2切欠き部421に挿通された第2支持部311が当接する。すなわち、第1基板41は、第2ケース3によっても支持される。このように、第1基板41は、第1ケース2の支持構造215と、第2ケース3の第2支持部311によって挟持されて支持される。
さらに、第1基板41は、第1切欠き部411に第1支持部211が挿通される。これにより、第1基板41は、第1ケース2の第1支持部211によって位置決めされる。
このように、本実施形態では、第1基板41は、第1ケース2および第2ケース3によって挟持されるとともに、第1ケース2によって位置決めされて支持される。そのため、第1基板41を確実に支持することができる。
さらに、第2基板42は、第2切欠き部421に第2支持部311が挿通される。これにより、第2基板42は、第2ケース3の第2支持部311によって位置決めされる。
このように、本実施形態では、第2基板42は、第1ケース2および第2ケース3によって挟持されるとともに、第2ケース3によって位置決めされて支持される。そのため、第2基板42を確実に支持することができる。
以上のような本実施形態では、次の効果を奏することができる。
(1)本実施形態では、第1基板41には、4箇所に第1切欠き部411が形成され、第2基板42には、4箇所に第2切欠き部421が形成される。そして、第1基板41は、第1ケース2に設けられる第1支持部211が第1切欠き部411に挿通され、かつ、第2ケース3に設けられる第2支持部311によって支持される。すなわち、第1基板41は、第1支持部211によって位置決めされ、かつ、第2支持部311に支持される。同様に、第2基板42は、第2ケース3に設けられる第2支持部311が第2切欠き部421に挿通され、かつ、第1ケース2に設けられる第1支持部211によって支持される。すなわち、第2基板42は、第2支持部311によって位置決めされ、かつ、第1支持部211に支持される。このように、回路基板4を構成する第1基板41および第2基板42は、第1ケース2および第2ケース3と一体に形成される第1支持部211および第2支持部311により位置決めされ、かつ、支持される。そのため、部品点数を増やすことなく、確実に第1基板41および第2基板42を支持することができる。
次に、本発明の第2実施形態に係る物理量測定装置1Aについて図面に基づいて説明する。
第2実施形態に係る物理量測定装置1Aでは、第1基板41Aは、表示部8Aを保持する支持部材9Aに設けられる第2支持部93Aによって支持され、第2基板42Aは、当該第2支持部93Aによって位置決めされる点で第1実施形態と異なる。なお、第2実施形態において、第1実施形態と同一または同様の構成には同一符号を付し、説明を省略する。なお、第2実施形態の第1基板41Aは、前述した第1実施形態の第1基板41と同様に、第1切欠き部411A、コネクタ受部412A、外部端子部413A、内部端子部414A、および、弾性支持部材415Aを有する。また、第2基板42Aは、前述した第1実施形態の第2基板42と同様に、第2切欠き部421A、および、コネクタ部422Aを有する。
図9~図13に示すように、物理量測定装置1Aは、第2ケース3Aと、回路基板4Aと、表示部8Aと、支持部材9Aとを備えている。
第2ケース3Aは、前述した第2ケース3と同様に四角筒状に形成され、後述する回路基板4Aの第2基板42A、表示部8A、支持部材9A等を収納する部材である。
本実施形態では、第2ケース3Aは、第2ケース本体31Aと、パネルシート32Aとを有し、前述した第1ケース2に嵌合される。すなわち、本実施形態では、第2ケース3Aは、第1ケース2に取り付けられる。
第2ケース本体31Aは、内部に第2基板42A、表示部8A、支持部材9A等を収納可能に構成されている。また、第2ケース本体31Aは、第1ケース2に取り付けられた際に、第1ケース本体21と面一になるように形成されている。さらに、第2ケース本体31Aの底部には開口部314Aが形成されている。これにより、当該開口部314Aを通して表示部8Aをユーザーが視認できるように構成されている。そして、第2ケース本体31Aの底部の外面側、すなわち、第2ケース本体31Aの正面には、開口部314Aを囲うようにパネルシート32Aが貼付されている。また、開口部314Aの下部には、ボタン操作部315Aが設けられている。本実施形態では、ボタン操作部315Aが3つ設けられており、これによりユーザーがボタン操作部315Aを操作することにより、各種の操作をできるように構成されている。
表示部8Aは、センサモジュール5で検出された差圧をデジタル表示する液晶ディスプレイ(LCD)であり、回路基板4Aの第2基板42Aに電気的に接続されている。本実施形態では、後述する支持部材9Aの表示保持凹部92Aに嵌合され、かつ、表示保持爪部94Aに挟持されて保持されている。
そして、前述したように、表示部8Aにデジタル表示された差圧は、第2ケース本体31Aの開口部314Aを通して視認できるように構成されている。
支持部材9Aは、第2ケース本体31Aに収納され、表示部8Aを保持する部材である。さらに、本実施形態では、支持部材9Aは、第2基板42Aを位置決めするとともに、第1基板41Aを支持するように構成されている。
支持部材9Aは、支持部材本体部91Aと、表示保持凹部92Aと、第2支持部93Aと、表示保持爪部94Aとを備える。
また、支持部材本体部91Aの第2基板42A側には、第1ケース2に向かって突出する第2支持部93Aが設けられている。
爪状支持部931Aは、支持部材9Aと一体に爪状に形成されている。本実施形態では、爪状支持部931Aは、2つ設けられている。円柱状支持部932Aは、支持部材9Aと一体に円柱状に形成されている。本実施形態では、円柱状支持部932Aは、2つ設けられている。すなわち、本実施形態では、第2支持部93Aは4つ設けられている。
次に、回路基板4Aの第1基板41Aおよび第2基板42Aの支持構造について説明する。
図14は、第1基板41および第1ケース2の概略を示す正面図であり、図15は、第2基板42Aおよび第2ケース3Aの概略を示す正面図である。
図9~図15に示すように、第1基板41Aは、センサモジュール5と対向する面に第1ケース2の支持構造215が当接する。これにより、第1基板41Aは、第1ケース2によって支持される。さらに、第1基板41Aは、第2基板42Aと対向する面に、第2基板42Aの第2切欠き部421Aに挿通された第2支持部93Aが当接する。すなわち、第1基板41Aは、第2ケース3Aに収納された支持部材9Aによっても支持される。このように、第1基板41Aは、第1ケース2の支持構造215と、支持部材9Aの第2支持部93Aによって挟持されて支持される。
さらに、第1基板41Aは、第1切欠き部411Aに第1支持部211が挿通される。これにより、第1基板41Aは、第1ケース2の第1支持部211によって位置決めされる。
このように、本実施形態では、第1基板41Aは、第1ケース2および支持部材9Aによって挟持されるとともに、第1ケース2によって位置決めされて支持される。そのため、第1基板41Aを確実に支持することができる。
さらに、第2基板42Aは、第2切欠き部421Aに第2支持部93Aが挿通される。これにより、第2基板42Aは、支持部材9Aの第2支持部93Aによって位置決めされる。
このように、本実施形態では、第2基板42Aは、第1ケース2および支持部材9Aによって挟持されるとともに、支持部材9Aによって位置決めされて支持される。そのため、第2基板42Aを確実に支持することができる。
以上のような本実施形態では、次の効果を奏することができる。
(8)本実施形態では、第1基板41Aは、第1ケース2に設けられる第1支持部211が第1切欠き部411Aに挿通され、かつ、支持部材9Aに設けられる第2支持部93Aによって支持される。すなわち、第1基板41Aは、第1支持部211によって位置決めされ、かつ、第2支持部93Aに支持される。同様に、第2基板42Aは、支持部材9Aに設けられる第2支持部93Aが第2切欠き部421Aに挿通され、かつ、第1ケース2に設けられる第1支持部211によって支持される。すなわち、第2基板42Aは、第2支持部93Aによって位置決めされ、かつ、第1支持部211に支持される。このように、回路基板4Aを構成する第1基板41Aおよび第2基板42Aは、第1ケース2および支持部材9Aと一体に形成される第1支持部211および第2支持部93Aにより位置決めされ、かつ、支持される。そのため、部品点数を増やすことなく、確実に第1基板41Aおよび第2基板42Aを支持することができる。
なお、本発明は前述の各実施形態に限定されるものではなく、本発明の目的を達成できる範囲での変形、改良等は本発明に含まれるものである。
同様に、前記各実施形態では、第2基板42,42Aは、第2ケース3,3Aに収納されていたが、これに限定されない。例えば、第2基板は、第1ケースに収納されていてもよい。
同様に、前記第2実施形態では、第2支持部93Aは、爪状または円柱状に形成されていたが、これに限定されない。例えば、第1支持部および第2支持部は角柱状とされていてもよく、あるいは、内部が中空とされた筒状に形成されていてもよい。
同様に、前記各実施形態では、第2基板42,42Aには、四隅の近傍に第2切欠き部421,421Aが形成されていたが、これに限定されない。例えば、第2基板には、中央部の近傍に複数の第2切欠き部が形成され、当該第2切欠き部に、第2ケースの第2支持部が挿通されるように構成されていてもよく、第2基板における第2切欠き部の位置や数は任意とすることができる。
Claims (6)
- 被測定流体の物理量を検出する検出部を有するセンサモジュールと、
前記センサモジュールと電気的に接続され、互いに対向して配置される第1基板および第2基板を有する回路基板と、
前記センサモジュールおよび前記第1基板を収納する第1ケースと、
前記第1ケースに取り付けられ、前記第2基板を収納する第2ケースと、を備え、
前記第1基板には、複数の第1切欠き部が形成され、
前記第2基板には、複数の第2切欠き部が形成され、
前記第1ケースには、前記第1切欠き部に挿通され、前記第2基板を支持する複数の第1支持部が一体に形成され、
前記第2ケースには、前記第2切欠き部に挿通され、前記第1基板を支持する複数の第2支持部が一体に形成される
ことを特徴とする物理量測定装置。 - 被測定流体の物理量を検出する検出部を有するセンサモジュールと、
前記センサモジュールと電気的に接続され、互いに対向して配置される第1基板および第2基板を有する回路基板と、
前記センサモジュールおよび前記第1基板を収納する第1ケースと、
前記第1ケースに取り付けられ、前記第2基板を収納する第2ケースと、
前記第2ケースに設けられる表示部と、
前記第2ケースに収納され、前記表示部を保持する表示保持部を有する支持部材と、を備え、
前記第1基板には、複数の第1切欠き部が形成され、
前記第2基板には、複数の第2切欠き部が形成され、
前記第1ケースには、前記第1切欠き部に挿通され、前記第2基板を支持する複数の第1支持部が一体に形成され、
前記支持部材には、前記第2切欠き部に挿通され、前記第1基板を支持する複数の第2支持部が一体に形成される
ことを特徴とする物理量測定装置。 - 請求項1または請求項2に記載の物理量測定装置において、
前記第1ケースには、当接部が設けられ、
前記当接部と前記第1基板との間には、弾性支持部が介挿される
ことを特徴とする物理量測定装置。 - 請求項1から請求項3のいずれか一項に記載の物理量測定装置において、
複数の前記第1支持部は、前記第2ケースに向かって突出する柱状に形成され、
複数の前記第2支持部は、前記第1ケースに向かって突出する柱状に形成される
ことを特徴とする物理量測定装置。 - 請求項1から請求項4のいずれか一項に記載の物理量測定装置において、
前記第1ケースと前記第2ケースとの間には溝部が形成され、
複数の前記第1支持部によって位置決めされ環状に形成される本体部と、前記本体部よりも厚さが小さくなるように前記本体部から外周側に延出され前記溝部に配置される封止部と、を有する封止部材を備える
ことを特徴とする物理量測定装置。 - 請求項5に記載の物理量測定装置において、
前記本体部は、前記第1基板に支持される
ことを特徴とする物理量測定装置。
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- 2022-04-18 WO PCT/JP2022/017982 patent/WO2022230698A1/ja active Application Filing
- 2022-04-18 EP EP22795611.7A patent/EP4332532A1/en active Pending
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