JPH0164068U - - Google Patents
Info
- Publication number
- JPH0164068U JPH0164068U JP1987158476U JP15847687U JPH0164068U JP H0164068 U JPH0164068 U JP H0164068U JP 1987158476 U JP1987158476 U JP 1987158476U JP 15847687 U JP15847687 U JP 15847687U JP H0164068 U JPH0164068 U JP H0164068U
- Authority
- JP
- Japan
- Prior art keywords
- gear
- pointer
- rotates
- coil spring
- torsion coil
- 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
- 238000013459 approach Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Gears, Cams (AREA)
Description
第１図は本考案の一実施例の断面図、第２図は
本考案の一実施例の平面図、第３図は本考案の要
部の一実施例の平面図、第４図は本考案の他の要
部の一実施例の平面図、第５図は本考案の他の要
部であるモータ駆動用回路の一実施例のブロツク
図、第６図は従来の一例の断面図を示す。
７……ポテンシヨメータ、８……歯車、９……
歯車、１０……長穴、１１……指針軸、１２……
ロータ、１３……指針、１４……ねじりコイルば
ね、１５……ウオーム歯車、１６……モータ、１
７……文字板、１８……ストツパ。
Fig. 1 is a sectional view of an embodiment of the present invention, Fig. 2 is a plan view of an embodiment of the invention, Fig. 3 is a plan view of an embodiment of the main part of the invention, and Fig. 4 is a main part of the present invention. FIG. 5 is a block diagram of an embodiment of a motor drive circuit which is another essential part of the invention, and FIG. 6 is a sectional view of a conventional example. show. 7... Potentiometer, 8... Gear, 9...
Gear, 10...Elongated hole, 11...Pointer shaft, 12...
Rotor, 13... Pointer, 14... Torsion coil spring, 15... Worm gear, 16... Motor, 1
7...Dial board, 18...Stoppa.
Claims (1)
測定回転数とに基づいて回転されるモータと一体
的に回転する第１の歯車と、該第１の歯車と噛合
し、前記指針と係合する第２の歯車を回動させ前
記指針により被測定回転数を文字板に指示させる
回転数計において、 前記第１の歯車と噛合する第３の歯車と、 該第３の歯車に一端が係止され、コイル中心線
の周りにねじりモーメントを付与されたねじりコ
イルばねと、 該ねじりコイルばねの他の一端が貫通する長穴
を有し、前記第１の歯車と噛合し、該第３の歯車
と同軸上で回動する第４の歯車と、 前記指針を支持する指針軸と一体に回転し、該
ねじりコイルばねの該第４の歯車の該長穴を貫通
した一端が係止されるロータと、 被測定回転数が零付近となつたときに該指針が
該ねじりコイルばねにより圧接され前記文字板の
零位置に前記指針を保持するストツパとを具備し
、前記第２の歯車として前記第３及び第４の歯車
を用いた回転数計。[Claims for Utility Model Registration] A first gear that rotates integrally with a motor that rotates based on the rotational position of the pointer detected by a detection device and the rotational speed to be measured, and meshes with the first gear. and a tachometer that rotates a second gear that engages with the pointer to indicate the rotational speed to be measured by the pointer on a dial, a third gear that meshes with the first gear; a torsion coil spring whose one end is locked to the gear of No. 3 and to which a torsion moment is applied around the coil center line; and a long hole through which the other end of the torsion coil spring passes; a fourth gear that meshes with the third gear and rotates coaxially with the third gear; and a fourth gear that rotates together with a pointer shaft that supports the pointer and passes through the elongated hole of the fourth gear of the torsion coil spring. a rotor whose one end is locked, and a stopper which presses the pointer with the torsion coil spring and holds the pointer at the zero position of the dial when the rotational speed to be measured approaches zero; A rotation speed meter using the third and fourth gears as the second gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15847687U JPH0613494Y2 (en) | 1987-10-16 | 1987-10-16 | Tachometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15847687U JPH0613494Y2 (en) | 1987-10-16 | 1987-10-16 | Tachometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0164068U true JPH0164068U (en) | 1989-04-25 |
| JPH0613494Y2 JPH0613494Y2 (en) | 1994-04-06 |
Family
ID=31438839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15847687U Expired - Lifetime JPH0613494Y2 (en) | 1987-10-16 | 1987-10-16 | Tachometer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0613494Y2 (en) |
-
1987
- 1987-10-16 JP JP15847687U patent/JPH0613494Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0613494Y2 (en) | 1994-04-06 |
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