圧力検出装置の製造方法

Japanese Patent JP7282006

B2

To suppress the breakage of a piezoelectric element in manufacturing a pressure detector that includes the piezoelectric element.SOLUTION: Against a temporary assembly created by assembling the constituent member of a second structure that includes a diaphragm head 32 and a pressing member 49 and a tip insulating member 43 that constitutes a fourth structure, the pressing member 49 is pushed by a piston 620 inserted from a rear end side and the diaphragm head 32 is pushed via the tip insulating member 43, to set up these. Thereafter, a first internal housing 35 and a second internal housing 36 are integrated together via a second welding part W2 to obtain the second structure. Next, a third structure (piezoelectric module 400) including a piezoelectric element 41 and a support member 53 are inserted from the rear end side into the second structure having the tip insulating member 43 attached thereto, and the second internal housing 36 and the support member 53 are integrated together via a third welding part W3 while a prescribed preload is added to the piezoelectric element 41 via the support member 53, to obtain the fourth structure.SELECTED DRAWING: Figure 18

Yusuke Sato
Takashi Iwashita
Hiroshi Nakagawa
Hideyuki Yamazaki
Hidemasa Sakurai
Shigeki Koyama

JP2019174741A

May 26, 2023

September 25, 2019

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Citizen Fine Device Co., Ltd.
Citizen Watch Co., Ltd.

G01L23/10; G01L23/22

JP2015052504A
JP2014163919A
JP2017173122A
JP2015215247A
JP2015219131A

US20170276554

Jiro Furube
Fumio Ogata
Takehiko Sunada

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