Title:
SENSOR DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/003692
Kind Code:
A1
Abstract:
A sensor device 1 comprises: a holder 30 that is provided with an insertion hole 33; a detection needle 21 having a base end that is inserted into the insertion hole 33, the portion inserted into the insertion hole 33 being narrower than the diameter of the insertion hole 33; piezoelectric elements 23, 24 that are accommodated in the holder 30, that are in direct or indirect contact with the base end of the detection needle 21, and that operate as a result of vibration of the detection needle 21; and an O-ring 41 (blocking member) that is provided in the insertion hole 33, and that holds the detection needle 21, thereby preventing the detection needle 21 from coming into contact with the holder 30. The vibration of an object to be measured is detected by pressing a tip 21d of the detection needle 21 against the object to be measured.
Inventors:
NAGASE MAMORU (JP)
OIZUMI AKIRA (JP)
KOSAKA HAJIME (JP)
OIZUMI AKIRA (JP)
KOSAKA HAJIME (JP)
Application Number:
PCT/JP2018/019047
Publication Date:
January 03, 2019
Filing Date:
May 17, 2018
Export Citation:
Assignee:
TLV CO LTD (JP)
International Classes:
G01H11/08
Foreign References:
| JPH07229785A | 1995-08-29 | |||
| JPS6117917A | 1986-01-25 | |||
| JPS62168432U | 1987-10-26 | |||
| JPS4715988Y1 | 1972-06-05 | |||
| JPS5385474A | 1978-07-27 | |||
| JP2016125972A | 2016-07-11 | |||
| US4991439A | 1991-02-12 | |||
| JPS5933144B2 | 1984-08-14 |
Other References:
See also references of EP 3640613A4
Attorney, Agent or Firm:
TERAZONO Kenichi et al. (JP)
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