JPH0247515U - - Google Patents
Info
- Publication number
- JPH0247515U JPH0247515U JP12472688U JP12472688U JPH0247515U JP H0247515 U JPH0247515 U JP H0247515U JP 12472688 U JP12472688 U JP 12472688U JP 12472688 U JP12472688 U JP 12472688U JP H0247515 U JPH0247515 U JP H0247515U
- Authority
- JP
- Japan
- Prior art keywords
- groove
- measuring coil
- bobbin
- eddy current
- view
- 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.)
- Granted
Links
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
第１図は本考案渦電流型変位センサーの一実施
例の縦断面図、第２図は同上のボビンの斜視図、
第３図は同上の測定コイルの縦断面図、第４図は
ボビン材料の熱膨張係数の説明図、第５図は接着
剤の熱膨張係数の説明図である。第６図は公知の
渦電流型変位計の模式図、第７図は従来のセンサ
ーの縦断面図、第８図は同上の等価回路図、第９
図は同上のボビンの正面図である。
１０…センサー、１１…ボビン、１１ａ…ボビ
ン頂部、１２…リング状溝、１３…測定コイル、
１４…接着剤、１５…リード線、１６…アダプタ
ー、１７…インダクタンス、１８…固有抵抗、１
９…浮遊容量、２０…信号処理回路部、３０…計
測対象物体。
FIG. 1 is a longitudinal sectional view of an embodiment of the eddy current displacement sensor of the present invention, and FIG. 2 is a perspective view of the same bobbin.
FIG. 3 is a longitudinal sectional view of the same measuring coil as described above, FIG. 4 is an explanatory diagram of the thermal expansion coefficient of the bobbin material, and FIG. 5 is an explanatory diagram of the thermal expansion coefficient of the adhesive. Fig. 6 is a schematic diagram of a known eddy current type displacement meter, Fig. 7 is a vertical sectional view of a conventional sensor, Fig. 8 is an equivalent circuit diagram of the same, and Fig. 9 is a schematic diagram of a known eddy current type displacement meter.
The figure is a front view of the bobbin same as above. DESCRIPTION OF SYMBOLS 10... Sensor, 11... Bobbin, 11a... Bobbin top, 12... Ring-shaped groove, 13... Measuring coil,
14... Adhesive, 15... Lead wire, 16... Adapter, 17... Inductance, 18... Specific resistance, 1
9... Stray capacitance, 20... Signal processing circuit section, 30... Measurement target object.
Claims (1)
ス製ボビンと、上記溝内に巻装された測定コイル
と、上記溝内の測定コイル外側に塗布され線膨張
率が上記セラミツクスとほぼ同等の無機系接着剤
とを具えたことを特徴とする渦電流型変位センサ
ー。 A cylindrical ceramic bobbin with a ring-shaped groove on the outer periphery, a measuring coil wound in the groove, and an inorganic adhesive coated on the outside of the measuring coil in the groove and having a coefficient of linear expansion almost equal to that of the ceramic. An eddy current displacement sensor characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988124726U JPH074491Y2 (en) | 1988-09-26 | 1988-09-26 | Eddy current type displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988124726U JPH074491Y2 (en) | 1988-09-26 | 1988-09-26 | Eddy current type displacement sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0247515U true JPH0247515U (en) | 1990-03-30 |
| JPH074491Y2 JPH074491Y2 (en) | 1995-02-01 |
Family
ID=31374708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988124726U Expired - Lifetime JPH074491Y2 (en) | 1988-09-26 | 1988-09-26 | Eddy current type displacement sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH074491Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08200366A (en) * | 1995-01-18 | 1996-08-06 | Ntn Corp | Magnetic bearing |
| JP2018179901A (en) * | 2017-04-20 | 2018-11-15 | 多摩川精機株式会社 | Linear differential transformer structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6037868U (en) * | 1983-08-23 | 1985-03-15 | カルソニックカンセイ株式会社 | rotation sensor |
-
1988
- 1988-09-26 JP JP1988124726U patent/JPH074491Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6037868U (en) * | 1983-08-23 | 1985-03-15 | カルソニックカンセイ株式会社 | rotation sensor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08200366A (en) * | 1995-01-18 | 1996-08-06 | Ntn Corp | Magnetic bearing |
| JP2018179901A (en) * | 2017-04-20 | 2018-11-15 | 多摩川精機株式会社 | Linear differential transformer structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH074491Y2 (en) | 1995-02-01 |
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