Title:
CHARGE OUTPUT ELEMENT, ASSEMBLY METHOD, AND PIEZOELECTRIC ACCELERATION SENSOR
Document Type and Number:
WIPO Patent Application WO/2018/223828
Kind Code:
A1
Abstract:
A charge output element (1), comprising: a support (10) comprising a connecting component (11); a piezoelectric element (20), which is an annular structural body and is sleeved on the connecting component (11), wherein the piezoelectric element (20) is provided with a first deformation groove (23), and the first deformation groove (23) passes through a side wall of the piezoelectric element (20) to disconnect the piezoelectric element (20) in a circumferential direction; and a mass block (30), which is an annular structural body and is sleeved on the piezoelectric element (20), wherein the piezoelectric element (20) is in interference fit with the connecting component (11) and the mass block (30), and the piezoelectric element (20), the mass block (30) and the support (10) of the charge output element (1) are in rigid contact with each other, so that the overall rigidity of the charge output element (1) can be effectively improved, thus improving the frequency response characteristics and resonance of the piezoelectric acceleration sensor. Moreover, the first deformation groove (23) provided on the piezoelectric element (20) causes the piezoelectric element (20) to deform to a greater extent so as to facilitate the assembly of the mass block (30), the piezoelectric element (20) and the support (10), thereby improving the assembly efficiency of the charge output element (1). Further disclosed are a method for assembling the charge output element (1) and a piezoelectric acceleration sensor.
Inventors:
NIE YONGZHONG (CN)
NIE CHUAN (CN)
NIE CHUAN (CN)
Application Number:
PCT/CN2018/087293
Publication Date:
December 13, 2018
Filing Date:
May 17, 2018
Export Citation:
Assignee:
FATRI XIAMEN TECH CO LTD (CN)
International Classes:
G01P15/09
Foreign References:
| CN107219377A | 2017-09-29 | |||
| CN206906415U | 2018-01-19 | |||
| CN206906417U | 2018-01-19 | |||
| CN203133106U | 2013-08-14 | |||
| CN203164202U | 2013-08-28 | |||
| CN203324299U | 2013-12-04 | |||
| CN203133108U | 2013-08-14 | |||
| JP2014020869A | 2014-02-03 | |||
| RU2098831C1 | 1997-12-10 |
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
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