# US 11,079,262 B2 · Physical quantity detection apparatus and electronic apparatus

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- Number: US 11,079,262 B2
- Document ID: US11079262B2
- Status: Granted
- Kind: B2
- Application number: 15/547,270
- Filed: 2015-10-28
- Published: 2018-01-25
- Granted: 2021-08-03
- Earliest claimed: 2015-01-30
- Assignees: Hitachi Automotive Systems, Ltd.
- Applicants: Hitachi Automotive Systems, Ltd.
- Inventors: Tsubasa Watanabe; Tsutomu Kono; Hiroaki Hoshika; Takahiro Miki; Takayuki Yogo
- Web page: https://patentgrep.com/patent/US11079262B2

## CPC

- G01D 11/245: {Housings for sensors}
- F02M 35/1038: {for temperature or pressure}
- F02M 35/10386: {for flow rate (air flow meters in air cleaners F02M35/021; circuit arrangements for generating control signals by measuring intake air flow F02D41/18)}
- F02M 35/10393: {for characterising a multi-component mixture, e.g. for the composition such as humidity, density or viscosity}
- G01F 1/684: Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
- F02D 35/02: on interior conditions
- F02D 37/02: one of the functions being ignition
- G01F 15/14: Casings, e.g. of special material
- G01K 1/14: Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
- G01L 19/14: Housings {(G01L19/0007, G01L19/0084, G01L19/0092, G01L19/04, G01L19/06 take precedence)}
- G01N 35/00: Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N 2035/00306: {Housings, cabinets, control panels (details)}
- 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
- F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- G01F: MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- F02D: CONTROLLING COMBUSTION ENGINES (vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed B60K31/00; conjoint control of vehicle sub-units of different type or different function, road vehicle drive control systems for purposes other than the control of a single sub-unit B60W)
- G01K: MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR (radiation pyrometry G01J5/00)
- G01L: MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE (weighing G01G)
- G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q)

## Abstract

To obtain a physical quantity detection apparatus that can reduce the outer shape of a housing in size. A physical quantity detection apparatus 300 detects a plurality of physical quantities of gas 30 to be measured flowing in a main passage 124. The physical quantity detection apparatus 300 has a housing 302 disposed in the main passage 124, a circuit substrate 400 insert molded in the housing 302, and a plurality of detection sensors 452, 453, 454, 455, and 456 each mounted on each of one face and the other face of the circuit substrate 400.

## Claims

### Claim 1

An electronic apparatus comprising:
a circuit substrate;
an integrally molded body in which the circuit substrate is insert molded, the integrally molded body including
a housing portion and a reinforcing section,
a first sub-passage inlet and a second sub-passage inlet formed on a first side of the integrally molded body,
a first sub-passage outlet and a second sub-passage outlet formed on a second side of the integrally molded body,
housing resins are formed on both the first side and the second side of the integrally molded body; and
a fluid path sucking gas from a first end of the electronic apparatus to a second end of the electronic apparatus;
wherein the housing portion separates the circuit substrate from the reinforcing section, and
wherein the second side is opposite the first side.

### Claim 2 (depends on 1)

The electronic apparatus according to claim 1 further comprising:
a sensor configured to detect a physical quantity of a fluid, and
wherein the sensor is mounted on either the first side or the second side.

### Claim 3 (depends on 1)

The electronic apparatus according to claim 1 further comprising:
a main passage, wherein the integrally molded body is disposed in the main passage; and
a plurality of detection sensors each mounted on one of the first side and the second side, wherein the plurality of detection sensors are charged to detect a plurality of physical quantities of gas to be measured flowing in the main passage.

### Claim 4 (depends on 3)

The electronic apparatus according to claim 3, further comprising:
a first sub-passage sucking gas to be measured from the first sub-passage inlet and discharging the gas to be measured to the first sub-passage outlet; and
a second sub-passage sucking the gas to be measured from the second sub-passage inlet and discharging the gas to be measured to the second sub-passage outlet, wherein at least one of the plurality of detection sensors is disposed in both the first sub-passage and the second sub-passage, and at least one detection sensor of the plurality of detection sensors disposed in the first sub-passage is different from the at least one detection sensor of the plurality of detection sensors disposed in the second sub-passage.

### Claim 5 (depends on 4)

The electronic apparatus according to claim 4, wherein the integrally molded body has a separating wall at a position on an upstream side of the gas to be measured from the at least one detection sensor in the second sub-passage.

### Claim 6 (depends on 4)

The electronic apparatus according to claim 4, wherein the integrally molded body has a separating wall at a position on a downstream side of the gas to be measured from the at least one detection sensor in the second sub-passage.

### Claim 7 (depends on 4)

The electronic apparatus according to claim 4, wherein the at least one detection sensor disposed in the first sub-passage and the at least one detection sensor disposed in the second sub-passage detect the physical quantities that are different from each other.

### Claim 8 (depends on 4)

The electronic apparatus according to claim 4, further comprising;
a detection sensor face region in which at least one of the plurality of the detection sensors is disposed on a first face of the circuit substrate;
a circuit component face region in which a circuit component other than the detection sensor is disposed; and
an opposite face region facing the circuit component face region on a second face of the circuit substrate, wherein at least part of the opposite face region on the second face of the circuit substrate is exposed to the second sub-passage.

### Claim 9 (depends on 8)

The electronic apparatus according to claim 8, wherein the second sub-passage is constituted by cooperation of the integrally molded body, the circuit substrate, and a cover joined to the integrally molded body.

### Claim 10 (depends on 9)

The electronic apparatus according to claim 9, wherein the second sub-passage extends in parallel along a flow direction of the gas to be measured flowing in the main passage, and the at least one of the plurality of the detection sensors in the detection sensor face region are disposed at positions spaced from each other in a direction crossing a straight line connecting the second sub-passage inlet and the second sub-passage outlet.

### Claim 11 (depends on 9)

The electronic apparatus according to claim 9, wherein the second side has a sectioning wall sectioning the second sub-passage into a passage connecting the second sub-passage inlet and the second sub-passage outlet and a sensor chamber in which at least one of the plurality of the detection sensors are disposed.