JPH02140331U - - Google Patents
Info
- Publication number
- JPH02140331U JPH02140331U JP4752789U JP4752789U JPH02140331U JP H02140331 U JPH02140331 U JP H02140331U JP 4752789 U JP4752789 U JP 4752789U JP 4752789 U JP4752789 U JP 4752789U JP H02140331 U JPH02140331 U JP H02140331U
- Authority
- JP
- Japan
- Prior art keywords
- mounting member
- piezoelectric element
- lead plate
- output lead
- weight member
- 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
- 239000010409 thin film Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 239000007769 metal material Substances 0.000 claims 1
- 239000011347 resin Substances 0.000 claims 1
- 229920005989 resin Polymers 0.000 claims 1
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Description
第１図および第２図は本考案の実施例を示し、
第１図はノツクセンサの要部を拡大して示す縦断
面図、第２図はウエイト部材にコーテイングした
絶縁薄膜を示す一部破断の斜視図、第３図および
第４図は従来技術を示し、第３図はノツクセンサ
の縦断面図、第４図は第３図中の要部拡大図であ
る。
１……取付部材、２……取付穴、４……圧電素
子、５，６……リードプレート、９……六角ナツ
ト、１０……皿ばね、２１……ウエイト部材、２
２……絶縁薄膜。
1 and 2 show an embodiment of the present invention,
FIG. 1 is an enlarged vertical cross-sectional view of the main parts of the knock sensor, FIG. 2 is a partially cutaway perspective view showing an insulating thin film coated on a weight member, and FIGS. 3 and 4 show a prior art. FIG. 3 is a longitudinal sectional view of the knock sensor, and FIG. 4 is an enlarged view of the main part in FIG. DESCRIPTION OF SYMBOLS 1... Mounting member, 2... Mounting hole, 4... Piezoelectric element, 5, 6... Lead plate, 9... Hexagonal nut, 10... Belleville spring, 21... Weight member, 2
2...Insulating thin film.
Claims (1)
けられる取付部材と、該取付部材を介してエンジ
ンのシリンダ内で発生するノツキングを検出すべ
く、該取付部材に設けられた圧電素子と、該圧電
素子からの検出信号を外部に出力すべく、該圧電
素子に当接して前記取付部材に設けられた出力用
のリードプレートと、該出力用のリードプレート
上に位置して前記取付部材に設けられ、前記圧電
素子に初期荷重を加えるウエイト部材とからなる
ノツクセンサにおいて、前記ウエイト部材には出
力用のリードプレートとの間を絶縁すべく、該リ
ードプレートに当接する下面に位置し、絶縁性の
樹脂材料からなる絶縁薄膜を一体に設けたことを
特徴とするノツクセンサ。 A mounting member formed of a metal material and mounted on the engine side; a piezoelectric element provided on the mounting member for detecting knocking occurring within the cylinder of the engine via the mounting member; and a piezoelectric element provided on the mounting member. an output lead plate provided on the mounting member in contact with the piezoelectric element in order to output a detection signal from the piezoelectric element to the outside, and an output lead plate located on the output lead plate and provided on the mounting member, In the knock sensor, the weight member includes a weight member that applies an initial load to the piezoelectric element, and the weight member has an insulating resin material located on the lower surface that contacts the lead plate in order to insulate between the weight member and the output lead plate. A knock sensor characterized by integrally provided with an insulating thin film consisting of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4752789U JPH02140331U (en) | 1989-04-21 | 1989-04-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4752789U JPH02140331U (en) | 1989-04-21 | 1989-04-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02140331U true JPH02140331U (en) | 1990-11-22 |
Family
ID=31563533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4752789U Pending JPH02140331U (en) | 1989-04-21 | 1989-04-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02140331U (en) |
-
1989
- 1989-04-21 JP JP4752789U patent/JPH02140331U/ja active Pending