JPS63163497U - - Google Patents
Info
- Publication number
- JPS63163497U JPS63163497U JP5543787U JP5543787U JPS63163497U JP S63163497 U JPS63163497 U JP S63163497U JP 5543787 U JP5543787 U JP 5543787U JP 5543787 U JP5543787 U JP 5543787U JP S63163497 U JPS63163497 U JP S63163497U
- Authority
- JP
- Japan
- Prior art keywords
- pointer
- rotational direction
- rotation
- rotating
- rotating system
- 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
- 230000005484 gravity Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
- Details Of Measuring And Other Instruments (AREA)
Description
第１図は本考案になる回転数計の一実施例にお
ける正の回転方向に印加される各トルクと負の回
転方向に印加される各トルクの関係を説明するた
めの図、第２図はトルカの側断面図、第３図はこ
のトルカの磁気回路を示す正面図、第４図はトル
カのロータ軸に設けられるエンコーダ板と発光素
子及び受光素子等との関係を示す要部斜視図、第
５図は駆動制御回路のブロツク構成図である。
１……トルカ、４……ヨーク、５……ロータ軸
、６……ロータ、７……トルカコイル、９……回
転系、１０……指針、１１……ひげぜんまい、１
２……エンコーダ板、１７……インクリメンタル
型エンコーダ装置、１８……駆動制御回路、２１
……周波数カウンタ、２２……比較回路、２３…
…回転位置カウンタ回路、２４……ドライブ回路
。
FIG. 1 is a diagram for explaining the relationship between each torque applied in the positive rotation direction and each torque applied in the negative rotation direction in an embodiment of the tachometer according to the present invention, and FIG. 3 is a front view showing the magnetic circuit of the torquer; FIG. 4 is a perspective view of essential parts showing the relationship between the encoder plate provided on the rotor shaft of the torquer, a light emitting element, a light receiving element, etc.; FIG. 5 is a block diagram of the drive control circuit. 1...Toruka, 4...Yoke, 5...Rotor shaft, 6...Rotor, 7...Toruka coil, 9...Rotation system, 10...Pointer, 11...Hairspring, 1
2... Encoder plate, 17... Incremental encoder device, 18... Drive control circuit, 21
...Frequency counter, 22...Comparison circuit, 23...
...Rotational position counter circuit, 24...Drive circuit.
Claims (1)
転方向に回転せしめる指針駆動手段と、上記指針
を負の回転方向に回転付勢する指針帰零手段とを
具備してなる回転数計において、上記回転系の自
重により指針を回転付勢する自重トルクが、帰零
位置において上記指針を負の回転方向に回転付勢
するよう、上記回転系の重心をこの回転系の回転
中心に対して偏心させたことを特徴とする回転数
計。 A rotation speed meter comprising a pointer driving means for rotating a rotation system including a pointer in a positive rotational direction in accordance with the measurement rotational speed, and a pointer zeroing means for rotationally biasing the pointer in a negative rotational direction. , the center of gravity of the rotating system is set relative to the center of rotation of the rotating system so that the self-weight torque that rotationally biases the pointer due to the dead weight of the rotating system rotationally biases the pointer in the negative rotational direction at the zero position. A tachometer characterized by being eccentric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5543787U JPS63163497U (en) | 1987-04-14 | 1987-04-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5543787U JPS63163497U (en) | 1987-04-14 | 1987-04-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63163497U true JPS63163497U (en) | 1988-10-25 |
Family
ID=30883338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5543787U Pending JPS63163497U (en) | 1987-04-14 | 1987-04-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63163497U (en) |
-
1987
- 1987-04-14 JP JP5543787U patent/JPS63163497U/ja active Pending
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