JPS6436199A - Self-binding outer tightening langevin type vibrator - Google Patents
Self-binding outer tightening langevin type vibratorInfo
- Publication number
- JPS6436199A JPS6436199A JP19129487A JP19129487A JPS6436199A JP S6436199 A JPS6436199 A JP S6436199A JP 19129487 A JP19129487 A JP 19129487A JP 19129487 A JP19129487 A JP 19129487A JP S6436199 A JPS6436199 A JP S6436199A
- Authority
- JP
- Japan
- Prior art keywords
- pressing body
- piezoelectric ceramic
- ceramic element
- self
- type vibrator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000919 ceramic Substances 0.000 abstract 4
- 238000009413 insulation Methods 0.000 abstract 2
- 230000036316 preload Effects 0.000 abstract 2
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
Landscapes
- Transducers For Ultrasonic Waves (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
PURPOSE:To make a pre-load of a piezoelectric ceramic element constant over a wide temperature range by packing a ring shaped pressing body with electric insulation into a closed space formed by the ceramic element, an output block and a rear block without any gap. CONSTITUTION:The ring pressing body 13 with electric insulation is packed without any gap into the closed space formed by the piezoelectric ceramic elements 1a, 1b, the output block 14 and the rear block 15. Thus, the decrease in the pre-load due to temperature rise is compensated by a compression force exerted to the outer circumference of the piezoelectric ceramic element as the result of thermal expansion of the ring pressing body 13. Thus, the thermal resistance vibrator with less characteristic change over a wide temperature range is obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19129487A JPS6436199A (en) | 1987-07-30 | 1987-07-30 | Self-binding outer tightening langevin type vibrator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19129487A JPS6436199A (en) | 1987-07-30 | 1987-07-30 | Self-binding outer tightening langevin type vibrator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6436199A true JPS6436199A (en) | 1989-02-07 |
Family
ID=16272172
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19129487A Pending JPS6436199A (en) | 1987-07-30 | 1987-07-30 | Self-binding outer tightening langevin type vibrator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6436199A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008264773A (en) * | 2007-03-29 | 2008-11-06 | Ngk Spark Plug Co Ltd | Ultrasonic transducer and ultrasonic apparatus having the same |
EP1974833A3 (en) * | 2007-03-29 | 2017-06-21 | NGK Spark Plug Co., Ltd. | Ultrasonic transducer and ultrasonic apparatus having the same |
-
1987
- 1987-07-30 JP JP19129487A patent/JPS6436199A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008264773A (en) * | 2007-03-29 | 2008-11-06 | Ngk Spark Plug Co Ltd | Ultrasonic transducer and ultrasonic apparatus having the same |
EP1974833A3 (en) * | 2007-03-29 | 2017-06-21 | NGK Spark Plug Co., Ltd. | Ultrasonic transducer and ultrasonic apparatus having the same |
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