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Pressure detecting apparatus

A detection device and pressure technology, applied in measuring devices, fluid pressure measurement by changing ohmic resistance, rapid measurement changes, etc., can solve problems such as bending, disconnection, cracks, etc.

Inactive Publication Date: 2005-11-23
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, in the case of copper sheets etc. constituting the flexible printed circuit board, cracks, bends, disconnections, etc. may occur

Method used

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Examples

Experimental program
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Effect test

no. 1 example

[0051] figure 1 It is a sectional view roughly showing the overall structure of the pressure detection device 100 according to the first embodiment of the present invention. in addition, figure 2 for showing figure 1 An enlarged view of a part of the pressure detection device 100 , wherein the part is the top of the pressure detection device 100 . It should be noted that in figure 2 In , engine block 200 is also shown.

[0052] Although the use of the pressure detection device 100 is not limited, the pressure detection device 100 can be applied as a combustion pressure sensor, while the pipe portion 12 of the casing 10 is installed in the installation hole 201, wherein the installation hole 201 is for example by means of The threaded connection is formed on the engine block 200 of the automobile as the object to be detected (see figure 2 ). The combustion pressure sensor (ie, inner cylinder pressure) detects the pressure inside the combustion chamber 202 as a detectio...

no. 2 example

[0099] image 3 is a cross-sectional view roughly showing a main part of a pressure detecting device according to a second embodiment of the present invention. The difference between the pressure detection device and the first embodiment will be mainly described below.

[0100] In the above-mentioned first embodiment, when the pressure sensing element 20 is arranged such that the pressure sensing element 20 is exposed to the detection pressure environment, the detection pressure is directly applied to the pressure sensing element 20 .

[0101] Contrary to the first embodiment, in the pressure detection device of the second embodiment, such as image 3 As shown, the diaphragm 15 is arranged on the tip of the pipe part 12 in the housing 10 in such a way that it covers the pressure sensor element 20 . In this way, the probe pressure can be applied to the pressure sensor element 20 via the diaphragm 15 .

[0102] It can be understood that, hereinafter, the diaphragm 15 will be ...

no. 3 example

[0111] Figure 5is a cross-sectional view roughly showing a main part of a pressure detecting device according to a third embodiment of the present invention. The difference between the pressure detection device and the above-mentioned embodiment will be mainly described below.

[0112] Such as Figure 5 As shown, also in the third embodiment, the pressure-receiving-purpose diaphragm 15 is arranged at the tip of the pipe part 12 in such a way that the pressure-receiving-purpose diaphragm 15 covers the pressure sensing element 20, thereby The probe pressure can be applied to the pressure sensor element 20 via the pressure-receiving-purpose diaphragm 15 .

[0113] In the pressure detecting device according to the above-mentioned second embodiment, when the raised portion 15a is provided on the pressure-receiving-purpose diaphragm 15, the pressure-receiving-purpose diaphragm 15 is in direct contact with the pressure sensing element 20, The pressure detection device can thus be...

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PUM

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Abstract

Pressure detecting apparatus includes: a housing; a pipe extending from one end of the housing and having an elongated shape; and a pressure sensitive element for detecting pressure and outputting a signal corresponding to the pressure. The pipe includes a top end capable of receiving the pressure. The pressure sensitive element is disposed on the top end of the pipe. The housing includes a connector for retrieving the signal from the pressure sensitive element. The pipe further includes a wiring member disposed inside the pipe so that the wiring member connects between the pressure sensitive element and connector electrically.

Description

field of invention [0001] The invention relates to a pressure sensor Background of the invention [0002] The invention relates to a pressure detection device, namely a pressure sensor, which is designed in such a way that the pressure sensing element is arranged inside a housing containing an elongated shaped pipes. [0003] This pressure detection device employs a housing, an elongated pipe portion, and a pressure sensing element. This device is disclosed, for example, in Japanese Laid-Open Patent Application No. H05-34231. The elongated duct section is arranged in such a way that the duct section protrudes from an edge side of the housing. The pressure sensing element is disposed within the housing and outputs a signal in response to the detected pressure. [0004] In the above pressure detecting device, the pipe portion of the housing is inserted into the object to be detected, the object pressure can be detected, and then the detection pressure (ie, detection pressu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L23/18G01L9/04
Inventor 小田辉夫
Owner DENSO CORP
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