CHARGE OUTPUT ELEMENT AND RING-SHAPED SHEARING TYPE PIEZOELECTRIC ACCELERATION SENSOR

WIPO Patent Application WO/2019/052324

A1

Embodiments of the present invention provide a charge output element and a ring-shaped shearing type piezoelectric acceleration sensor. The charge output element comprises a base, a piezoelectric element, a mass block, a pre-tightening member, and a locking member. The base comprises a supporting portion, a connecting portion, and a mounting hole. The piezoelectric element is sleeved outside the connecting portion, and a ring-shaped gap is formed between the piezoelectric element and the connecting portion. The mass block is sleeved outside the piezoelectric element. The pre-tightening member is inserted in the ring-shaped gap. The locking member is provided with a columnar portion and a stop portion that are connected with each other. The columnar portion and the mounting hole cooperate to lock the elements. The stop portion presses against a first end, so that the pre-tightening member provides a radial pre-tightening force to fasten the piezoelectric element, the mass block and the base. In the present invention, because charge output elements are in rigid contact, the contact rigidity of the whole structure is greatly improved, and adhesion is not needed, thereby effectively shortening the mounting period of the charge output elements.

WO/2019/200634	PIEZOELECTRIC ACCELERATION SENSOR
JP2745908	ACCELERATION SENSOR
JPS6329259	PIEZOELECTRIC DYNAMIC QUANTITY SENSOR

NIE YONGZHONG (CN)
NIE CHUAN (CN)

PCT/CN2018/101939

March 21, 2019

August 23, 2018

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FATRI XIAMEN TECH CO LTD (CN)

G01P15/09

WO2016206094A1

2016-12-29

CN107688102A	2018-02-13
US4941243A	1990-07-17
US6279395B1	2001-08-28

BEIJING EAST IP LTD. (CN)

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