JPH0353175Y2 - - Google Patents
Info
- Publication number
- JPH0353175Y2 JPH0353175Y2 JP1981191443U JP19144381U JPH0353175Y2 JP H0353175 Y2 JPH0353175 Y2 JP H0353175Y2 JP 1981191443 U JP1981191443 U JP 1981191443U JP 19144381 U JP19144381 U JP 19144381U JP H0353175 Y2 JPH0353175 Y2 JP H0353175Y2
- Authority
- JP
- Japan
- Prior art keywords
- encoder
- gear
- rotating body
- motor
- rotational speed
- 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.)
- Expired
Links
- 230000005540 biological transmission Effects 0.000 claims description 13
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Gears, Cams (AREA)
Description
【考案の詳細な説明】
本考案はロータリエンコーダ用カツプリングギ
ヤにかかり、詳しくはモータ等の回転体の回転数
を、回転円板および光学センサーを備えてなる回
転数検出装置(以下、エンコーダという)によつ
て検出する場合において、回転体の回転運動をエ
ンコーダに伝達するために用いると好適なカツプ
リングギヤに関する。[Detailed description of the invention] The present invention relates to a coupling gear for a rotary encoder, and more specifically, a rotation speed detection device (hereinafter referred to as an encoder) comprising a rotating disk and an optical sensor to measure the rotation speed of a rotating body such as a motor. The present invention relates to a coupling gear suitable for use in transmitting rotational motion of a rotating body to an encoder when detecting the rotational motion of a rotating body.
第1図はこの種のエンコーダの原理図を示すも
ので、同図において1は回転体としての正逆転可
能なモータ、1aはその回転軸、2はエンコー
ダ、2aはその回転軸である。この回転軸2a
は、エンコーダ2のケーシング2bの内部におい
て、周辺部に多数のスリツト(図示せず)を設け
てなる回転円板2cに直交して連設されており、
ケーシング2b内には、回転円板2cのスリツト
を介して発光ダイオードの如き発光素子2dと、
フオトトランジスタの如き受光素子2eとが対向
して配設されている。なお発光素子2dにはその
ドライブ回路が、また受光素子2eにはA−D変
換回路、カウンタ−等が接続されるものであるが
便宜上、これらは何れも図示されていない。 FIG. 1 shows a diagram of the principle of this type of encoder. In the figure, 1 is a rotary motor capable of forward and reverse rotation, 1a is its rotation shaft, 2 is an encoder, and 2a is its rotation shaft. This rotating shaft 2a
are connected inside the casing 2b of the encoder 2, perpendicularly to a rotating disk 2c having a large number of slits (not shown) in the periphery.
Inside the casing 2b, a light emitting element 2d such as a light emitting diode is inserted through a slit in the rotating disk 2c.
A light-receiving element 2e such as a phototransistor is disposed facing each other. Note that the light emitting element 2d is connected to its drive circuit, and the light receiving element 2e is connected to an A/D conversion circuit, a counter, etc., but for convenience, none of these are shown.
かかるエンコ−ダ2によりモータ回転軸1aの
回転数を検出するには、回転軸1aとエンコ−ダ
2の回転軸2aとを適宜なカツプリング装置3に
て連結し、回転軸1aに従動する回転円板2cと
発光素子2d、受光素子2eからなる光学センサ
−とによつて回転軸1aの回転数に対応したパル
ス信号を得、これをカウントするものである。 In order to detect the rotation speed of the motor rotation shaft 1a by such an encoder 2, the rotation shaft 1a and the rotation shaft 2a of the encoder 2 are connected by an appropriate coupling device 3, and the rotation speed driven by the rotation shaft 1a is connected. A pulse signal corresponding to the number of rotations of the rotating shaft 1a is obtained by an optical sensor consisting of a disk 2c, a light emitting element 2d, and a light receiving element 2e, and is counted.
しかして、回転軸1aの回転をエンコ−ダ2に
伝達するカツプリング装置3としては、従来、ベ
ルトあるいはカツプリングギヤ等が用いられてい
るが、このうちカツプリングギヤを用いたものに
あつては、正転または逆転するモータ1の回転軸
1aの回転が一対のギヤ相互のバツクラツシユに
よつてエンコ−ダ2に正確に伝達されず、光学セ
ンサ−の出力としてのパルス信号に誤差を生じて
回転数の正確な検出が行えないという欠点があつ
た。また、このバツクラツシユを除法するために
駆動側または従動側のうち一方のギヤを2枚と
し、これらで他方のギヤを挟むようにしたものも
提供されてはいるが、概して構造や調整が複雑に
なる欠点を有していた。 Conventionally, a belt or a coupling gear has been used as the coupling device 3 for transmitting the rotation of the rotating shaft 1a to the encoder 2. The rotation of the rotating shaft 1a of the motor 1, which rotates or reverses, is not accurately transmitted to the encoder 2 due to the backlash between the pair of gears, causing an error in the pulse signal output from the optical sensor, resulting in an increase in the rotational speed. The drawback was that accurate detection could not be performed. In addition, in order to eliminate this backlash, two gears are provided on either the driving side or the driven side, and the other gear is sandwiched between these gears, but these generally have complicated structures and adjustments. It had some drawbacks.
本考案は上記の点に鑑み提案されたものであ
り、その目的とするところは回転体の回転運動を
エンコ−ダに伝達するカツプリングギヤにおい
て、駆動側もしくは従動側のギヤを可撓性のある
略有底円筒状の伝達ギヤとなし、この伝達ギヤを
介し回転体の回転運動をエンコ−ダに正確に伝達
せしめ、誤差のない回転数の検出を可能ならしめ
た構成簡単なロ−タリ−エンコ−ダ用カツプリン
グギヤを提供するにある。 The present invention was proposed in view of the above points, and its purpose is to make the driving side or driven side gear flexible in a coupling gear that transmits the rotational motion of a rotating body to an encoder. A rotary rotary with a simple configuration that uses a nearly cylindrical transmission gear with a bottom to accurately transmit the rotational motion of the rotating body to the encoder, making it possible to detect the rotational speed without error. The present invention provides a coupling gear for an encoder.
以下、図に沿つて本考案を説明する。 The present invention will be explained below with reference to the drawings.
第2図は本考案の一実施例を示すもので、図に
おいて1は、回転体としてのモータ、1aはその
回転軸でこのモータ1は基板4にネジ等にて取り
付けられている。またこのモータ1の近傍には、
エンコーダ2がその回転軸2aを前記回転軸1a
と並行させてネジ等により基板4に取り付けられ
ている。なおエンコーダ2のケーシング2b内部
には、第1図と同様に回転軸2aに連結された回
転円板、および発光素子、受光素子等からなる光
学センサーが配設されているが、これらは便宜
上、図示を省略する。 FIG. 2 shows an embodiment of the present invention. In the figure, 1 is a motor as a rotating body, 1a is its rotating shaft, and the motor 1 is attached to a substrate 4 with screws or the like. Also, near this motor 1,
The encoder 2 rotates its rotation axis 2a to the rotation axis 1a.
It is attached to the board 4 with screws or the like in parallel with the above. Note that inside the casing 2b of the encoder 2, a rotating disk connected to the rotating shaft 2a as in FIG. 1, and an optical sensor consisting of a light emitting element, a light receiving element, etc. are arranged, but these are shown for convenience. Illustrations are omitted.
しかしてモータ1の回転軸1aには、カツプリ
ングギヤを構成する第3図に示す如き伝達ギヤ5
が取り付けられる。この伝達ギヤ5は可撓性のあ
る合成樹脂にて形成されており、この形状は略有
底円筒状を呈していると共に、円筒部外周縁を他
の部分に比べて外周側にやや肉厚に形成し、かつ
その外周にギヤの歯5aを形成している。また底
面の中央部には凹部5bが突設され、この凹部5
bにはモータ1の回転軸1aを挿入する通孔5c
が貫通している。なお、凹部5bに穿設されたネ
ジ孔5dには伝達ギヤ5を回転軸1aに取り付け
るためのネジ(図示せず)が螺着されるものであ
る。 The rotating shaft 1a of the motor 1 is provided with a transmission gear 5 as shown in FIG. 3, which constitutes a coupling gear.
can be installed. The transmission gear 5 is made of flexible synthetic resin, and has a substantially bottomed cylindrical shape, with the outer periphery of the cylindrical portion being slightly thicker on the outer periphery side than on other parts. , and gear teeth 5a are formed on its outer periphery. Further, a recess 5b is protruded from the center of the bottom surface, and this recess 5
b is a through hole 5c into which the rotating shaft 1a of the motor 1 is inserted.
is penetrated. Note that a screw (not shown) for attaching the transmission gear 5 to the rotating shaft 1a is screwed into a screw hole 5d formed in the recess 5b.
再び第2図において、エンコーダ2の回転軸2
aには金属製あるいは合成樹脂等からなる平板状
のギヤ6が取り付けられ、このギヤ6は伝達ギヤ
5の歯5aと緊密に螺合している。また第2図
中、7はクランプカラーを示しており、8は本考
案にかかるカツプリング装置を被覆してなるカバ
ーである。 Referring again to FIG. 2, the rotary shaft 2 of the encoder 2
A flat gear 6 made of metal or synthetic resin is attached to a, and this gear 6 is tightly screwed into the teeth 5a of the transmission gear 5. Further, in FIG. 2, numeral 7 indicates a clamp collar, and numeral 8 indicates a cover covering the coupling device according to the present invention.
なお、この実施例では伝達ギヤ5を駆動側のモ
ータに取り付けてあるが、これに限られるもので
はなく、モータ1にギヤ6を、また従動側として
のエンコーダ2に伝達ギヤ5を夫々取り付けるこ
とも勿論可能である。 In this embodiment, the transmission gear 5 is attached to the motor on the drive side, but the present invention is not limited to this. The gear 6 may be attached to the motor 1, and the transmission gear 5 may be attached to the encoder 2 as a driven side. Of course, it is also possible.
このように本考案では、回転体の回転数を検出
するべく、回転体を回転円板および光学センサー
を備えてなる回転数検出装置に連結する、一対の
ギヤからなるカツプリング装置において、このカ
ツプリング装置を構成する一方の伝達ギヤを可撓
性を有する材料により略有底円筒状に形成したか
ら、伝達ギヤと他方のギヤとは常時密接した状態
で噛合し、モータの如き回転体の正転時または逆
転時に生じるバツクラツシユは伝達ギヤの材質お
よびその中空状の薄肉構造に起因する可撓性によ
つて完全に吸収され、伝達しようとする回転変位
を正確に伝達し得、よつて光学センサーを介した
検出信号に誤差を生じるおそれもなく、回転体の
回転数を正確に検出できる効果がある。 As described above, in the present invention, in order to detect the rotational speed of the rotating body, the coupling device includes a pair of gears that connects the rotating body to a rotational speed detection device comprising a rotating disk and an optical sensor. Since one of the transmission gears constituting the is made of a flexible material and formed into a substantially cylindrical shape with a bottom, the transmission gear and the other gear are always in close mesh with each other, and when a rotating body such as a motor rotates in the normal direction. Alternatively, the bump crash that occurs when reversing is completely absorbed by the material of the transmission gear and its flexibility due to its hollow thin structure, and the rotational displacement to be transmitted can be accurately transmitted, and the rotational displacement to be transmitted can be accurately transmitted. This has the effect of accurately detecting the rotational speed of the rotating body without the risk of causing an error in the detected detection signal.
第1図はエンコーダの原理図、第2図は本考案
の一実施例を示す要部の断面図、第3図は伝達ギ
ヤの斜視図である。
1……モータ、1a……回転軸、2……エンコ
ーダ、2a……ケーシング、4……基板、5……
伝達ギア、5a……歯、5b……凸部、5c……
通孔、5d……ネジ孔、6……ギヤ、7……クラ
ンプカラー、8……カバー。
FIG. 1 is a principle diagram of an encoder, FIG. 2 is a cross-sectional view of a main part showing an embodiment of the present invention, and FIG. 3 is a perspective view of a transmission gear. 1... Motor, 1a... Rotating shaft, 2... Encoder, 2a... Casing, 4... Board, 5...
Transmission gear, 5a...teeth, 5b...protrusion, 5c...
Through hole, 5d... screw hole, 6... gear, 7... clamp collar, 8... cover.
Claims (1)
回転円板および光学センサーを備えてなる回転数
検出装置に連結する、一対のギヤからなるカツプ
リング装置を構成する一方の伝達ギヤを可撓性を
有する材料により略有底円筒状に形成し、その円
筒部外周縁を他に比し外周側にやや肉厚に形成
し、かつその外周に歯部を形成したことを特徴と
するロータリーエンコーダ用カツプリングギヤ。 In order to detect the rotational speed of the rotating body, one of the transmission gears constituting a coupling device consisting of a pair of gears that connects the rotating body to a rotational speed detection device comprising a rotating disk and an optical sensor is flexible. For a rotary encoder, the outer periphery of the cylindrical portion is formed into a substantially bottomed cylindrical shape using a material having the following properties: Cut spring gear.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19144381U JPS5896257U (en) | 1981-12-22 | 1981-12-22 | cutlet spring gear |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19144381U JPS5896257U (en) | 1981-12-22 | 1981-12-22 | cutlet spring gear |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5896257U JPS5896257U (en) | 1983-06-30 |
JPH0353175Y2 true JPH0353175Y2 (en) | 1991-11-20 |
Family
ID=30104903
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19144381U Granted JPS5896257U (en) | 1981-12-22 | 1981-12-22 | cutlet spring gear |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5896257U (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54148948A (en) * | 1978-05-15 | 1979-11-21 | Matsushita Electric Works Ltd | Gear |
-
1981
- 1981-12-22 JP JP19144381U patent/JPS5896257U/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54148948A (en) * | 1978-05-15 | 1979-11-21 | Matsushita Electric Works Ltd | Gear |
Also Published As
Publication number | Publication date |
---|---|
JPS5896257U (en) | 1983-06-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5065633A (en) | Apparatus for the measurement of drive torques | |
JP4203371B2 (en) | Rotation detecting device and automobile equipped with the same | |
JPH0190298U (en) | ||
JPH0441851B2 (en) | ||
JPH0353175Y2 (en) | ||
CA2261381A1 (en) | Compact, self contained, hall-effect vehicle speed sensor | |
JP2525043Y2 (en) | Absolute position detector for rotary drive | |
JPH083163Y2 (en) | Gear motor | |
JPS6315773Y2 (en) | ||
JPS6323112Y2 (en) | ||
JPS584346Y2 (en) | Rotating pulse transmitter | |
JPS63106944U (en) | ||
JPS63146760U (en) | ||
JPS6347662U (en) | ||
JPH01136417U (en) | ||
JPS62146914U (en) | ||
JPS6453913U (en) | ||
JPS61266905A (en) | Angle sensor for power steering device | |
JPS63174017U (en) | ||
JPH0198924A (en) | Rotary encoder incorporated with speed reduction gear | |
JPS63241744A (en) | Mechanism for detecting rotation of reel base | |
JPH0436418U (en) | ||
JPS61184422A (en) | Pulse generator for detecting rotation | |
JPH0295210A (en) | Optical encoder | |
JPS5857771U (en) | ultrasonic head |