JPH11215767A - Rotary body supporting equipment - Google Patents
Rotary body supporting equipmentInfo
- Publication number
- JPH11215767A JPH11215767A JP10008941A JP894198A JPH11215767A JP H11215767 A JPH11215767 A JP H11215767A JP 10008941 A JP10008941 A JP 10008941A JP 894198 A JP894198 A JP 894198A JP H11215767 A JPH11215767 A JP H11215767A
- Authority
- JP
- Japan
- Prior art keywords
- rotating body
- electromagnet
- rotary body
- permanent magnet
- motor
- 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
Landscapes
- Braking Arrangements (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はコンパクトな回転体
支持装置に関し、特に監視カメラを支持するのに好適な
回転体支持装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compact rotating body supporting device, and more particularly to a rotating body supporting device suitable for supporting a surveillance camera.
【０００２】[0002]
【従来の技術】例えば、特開平８−１３９６７５号公報
「光無線送受信装置」は回転体支持装置に関する発明で
ある。この装置は、同公報の第７図（ａ）において、ス
テッピングモータＭ３→複数の歯車列からなる第１の減
速機構３５→光送受信装置２２の順にトルクを伝達する
ことで、ステッピングモータＭ３で光送受信装置２２を
水平軸廻りにスイングさせるものである。上記のトルク
伝達経路に必然的に発生するバックラッシュはスプリン
グ３６で吸収する。2. Description of the Related Art For example, Japanese Patent Application Laid-Open No. 8-139675 "Optical Wireless Transmitter / Receiver" is an invention relating to a rotating body support device. In FIG. 7 (a) of the publication, this apparatus transmits light in the order of a stepping motor M3 → a first reduction mechanism 35 composed of a plurality of gear trains → an optical transmission / reception device 22 so that an optical signal is transmitted by the stepping motor M3. The transmitting / receiving device 22 is swung around a horizontal axis. The backlash inevitably generated in the torque transmission path is absorbed by the spring 36.
【０００３】[0003]
【発明が解決しようとする課題】上記の装置では、複数
の歯車列からなる第１の減速機構３５を採用しているた
め、歯車の摩耗に対する潤滑剤など配慮が必要であ
る、減速機構を配置するスペースを確保しなければな
らない、バックラッシュを吸収するために、スプリン
グなどの対応が必要である。この構造では装置のコンパ
クト化が難かしい。一方、減速機構を用いず、モータの
みで回転体を回転及び停止させる場合、回転体を止める
には、モータを励磁する必要がある。特に監視カメラを
支持する回転体支持装置では、常時駆動するよりも静止
時間の方が圧倒的に長いため、長時間励磁し続ける必要
があり、電力無駄が多く好ましくない。In the above-described apparatus, the first reduction mechanism 35 composed of a plurality of gear trains is employed. It is necessary to secure the space to make it, and it is necessary to take measures such as springs to absorb the backlash. With this structure, it is difficult to make the device compact. On the other hand, when the rotating body is rotated and stopped only by the motor without using the speed reduction mechanism, it is necessary to excite the motor to stop the rotating body. In particular, in a rotating body supporting device that supports a surveillance camera, the stationary time is much longer than the constant driving, so that it is necessary to keep exciting for a long time, and power consumption is wasteful, which is not preferable.
【０００４】そこで、本発明の目的は、回転体の停止時
に無電力で位置保持するコンパクトな機構を提供するこ
とにある。An object of the present invention is to provide a compact mechanism for holding a position without power when the rotating body is stopped.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に請求項１は、回転体から左・右軸を延ばし、これら左
・右軸を支持台に回転可能に取付け、一方の軸にモータ
を配し、他方の軸にブレーキ機構を組込んだ回転体支持
装置であって、前記ブレーキ機構は、通電時に解放状態
となり、非通電時に制動状態となる電磁ブレーキであ
り、支持台に回転体に向って進退可能に取付けた電磁石
と、この電磁石を回転体に向って押出す弾性手段と、前
記回転体に前記電磁石に対向して取付けた永久磁石と、
この永久磁石に対して磁気的に反発する方向の電流を電
磁石に供給する給電部とからなることを特徴とする。回
転体にばねで静止側の電磁石を押付け、電磁石と永久磁
石との摩擦によって回転体を停止する。一方、電磁石の
反発で回転体から電磁石を離し、回転体を回転する。回
転体が監視カメラや光通信送受信器であれば、回転期間
に対し停止期間が圧倒的に長く、停止期間は給電せず、
回転期間のみ給電するため、大いに節電が図れる。ま
た、歯車等の減速機を使用せず直接モータで回転体を回
転できるので、バックラッシュ、歯車の摩耗及び減速機
の配置に対して配慮する必要がない。In order to achieve the above object, a first aspect of the present invention is to extend a left and right shaft from a rotating body, and to rotatably mount the left and right shafts on a support, and to attach a motor to one shaft. A rotating body support device incorporating a brake mechanism on the other shaft, wherein the brake mechanism is an electromagnetic brake that is released when energized and is in a braking state when not energized. An electromagnet mounted so as to be able to move forward and backward, elastic means for extruding the electromagnet toward the rotating body, and a permanent magnet mounted on the rotating body so as to face the electromagnet;
And a power supply unit for supplying a current in a direction that magnetically repels the permanent magnet to the electromagnet. The stationary electromagnet is pressed against the rotating body by a spring, and the rotating body is stopped by friction between the electromagnet and the permanent magnet. On the other hand, the electromagnet repels the electromagnet away from the rotating body and rotates the rotating body. If the rotating body is a surveillance camera or an optical communication transceiver, the suspension period is overwhelmingly longer than the rotation period, and power is not supplied during the suspension period,
Since power is supplied only during the rotation period, power can be saved greatly. Further, since the rotating body can be directly rotated by the motor without using a speed reducer such as a gear, it is not necessary to consider backlash, wear of the gear and arrangement of the speed reducer.
【０００６】[0006]
【発明の実施の形態】本発明の実施の形態を添付図に基
づいて以下に説明する。なお、図面は符号の向きに見る
ものとする。本発明に係る回転体支持装置の構成は図２
以降で説明するが、理解を速めるために、回転体支持装
置の作動原理を先に説明する。図１（ａ），（ｂ）は本
発明に係る回転体支持装置の作動原理図である。（ａ）
は停止状態を示し、コイルベース２１は支持台２側にス
ライドのみ可能に取付けた部材であり、このコイルベー
ス２１を皿ばね１２で強く永久磁石１３に押付けること
で、回転体３を固定したものである。ＳＷはスイッチを
示す。（ｂ）は回転状態を示し、電磁石１１に通電する
と、この電磁石１１は磁気的に反発して永久磁石１３か
ら離れる。従って、永久磁石１３は電磁石１１から離れ
て非制動状態になる。そこで、モータ４にて回転体３を
所望の方向へ廻せばよい。Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 2 shows the configuration of the rotating body supporting device according to the present invention.
As will be described later, the operation principle of the rotating body support device will be described first to facilitate understanding. FIGS. 1A and 1B are operating principle diagrams of the rotating body support device according to the present invention. (A)
Indicates a stopped state, and the coil base 21 is a member attached to the support base 2 so as to be slidable only, and the rotating body 3 is fixed by strongly pressing the coil base 21 against the permanent magnet 13 with the disc spring 12. Things. SW indicates a switch. (B) shows a rotating state. When the electromagnet 11 is energized, the electromagnet 11 magnetically repels and separates from the permanent magnet 13. Therefore, the permanent magnet 13 is separated from the electromagnet 11 and enters a non-braking state. Then, the rotating body 3 may be rotated in a desired direction by the motor 4.
【０００７】図２は本発明に係る回転体支持装置として
監視カメラを支持する支持装置の分解斜視図であり、回
転体支持装置１は、支持台２と、この支持台２に回転可
能に取付ける回転体３と、この回転体３の一方に直結す
るモータ４と、他方に取付けるブレーキ機構１０とから
なる。ブレーキ機構１０は、電磁石１１と、この電磁石
１１を回転体３に向って押出すばねとしての皿ばね１２
と、回転体３に電磁石１１に対向して取付ける永久磁石
１３と、この永久磁石１３に対して磁気的に反発する方
向の電流を電磁石１１に供給する給電部１４と、電磁石
１１の内面に、この電磁石１１が軸方向に進退可能に嵌
合する保持部１５と、この保持部１５の内面に嵌め込む
軸受１６と、この軸受１６に一方を嵌め込み、かつ他方
を回転体３に固定する軸１７とからなる。１８は止め
輪、１９，１９は保持部１５を取付けるねじである。FIG. 2 is an exploded perspective view of a supporting device for supporting a surveillance camera as a rotating body supporting device according to the present invention. A rotating body supporting device 1 is mounted on a supporting stand 2 so as to be rotatable. It comprises a rotating body 3, a motor 4 directly connected to one of the rotating bodies 3, and a brake mechanism 10 attached to the other. The brake mechanism 10 includes an electromagnet 11 and a disc spring 12 as a spring for pushing the electromagnet 11 toward the rotating body 3.
A permanent magnet 13 attached to the rotating body 3 so as to face the electromagnet 11, a power supply unit 14 for supplying a current in a direction that magnetically repels the permanent magnet 13 to the electromagnet 11, and an inner surface of the electromagnet 11. A holding portion 15 into which the electromagnet 11 is fitted so as to be able to advance and retreat in the axial direction, a bearing 16 fitted into the inner surface of the holding portion 15, and a shaft 17 fitted into the bearing 16 and fixing the other to the rotating body 3. Consists of Reference numeral 18 denotes a retaining ring, and reference numerals 19 and 19 denote screws for attaching the holding portion 15.
【０００８】電磁石１１は、コイルベース２１と、この
コイルベース２１の内面に接着する鉄心２２と、コイル
ベース２１及び鉄心２２に一体的に接着する摩擦板２３
と、コイルベース２１の外周溝２１ａに所定回数巻き付
けた導線２４とからなる。コイルベース２１は非磁性体
部材である。保持部１５は、小径部１５ａの外面に凸部
１５ｂ，１５ｂを形成したものであり、１５ｃ，１５ｃ
（一方は図示せず）は取付け穴である。The electromagnet 11 includes a coil base 21, an iron core 22 bonded to the inner surface of the coil base 21, and a friction plate 23 bonded integrally to the coil base 21 and the iron core 22.
And a conducting wire 24 wound around the outer circumferential groove 21a of the coil base 21 a predetermined number of times. The coil base 21 is a non-magnetic member. The holding portion 15 has protrusions 15b, 15b formed on the outer surface of the small diameter portion 15a.
(One is not shown) is a mounting hole.
【０００９】図３は本発明に係る回転体支持装置として
監視カメラを支持する支持装置の断面図であり、モータ
４に回転体３の軸２５を直結し、保持部１５の凸部１５
ｂにコイルベース２１の溝２１ｂを進退可能に嵌め込
み、このコイルベース２１と支持台２との間に皿ばね１
２を配置したことを示す。２６はレンズ枠２７を介して
取付けたレンズである。FIG. 3 is a sectional view of a supporting device for supporting a surveillance camera as a rotating body supporting device according to the present invention. The shaft 25 of the rotating body 3 is directly connected to the motor 4,
b is fitted into the groove 21b of the coil base 21 so as to be able to advance and retreat, and the disc spring 1 is disposed between the coil base 21 and the support base 2.
2 is arranged. Reference numeral 26 denotes a lens mounted via a lens frame 27.
【００１０】図４は図３の４−４線断面図であり、コイ
ルベース２１の内面に形成した溝２１ｂに保持部材１５
の凸部１５ｂが嵌合することで、コイルベース２１の回
転を抑えつつ、図面表裏方向へ移動可能にしたことを示
す。FIG. 4 is a sectional view taken along the line 4-4 in FIG. 3, in which a holding member 15 is inserted into a groove 21b formed on the inner surface of the coil base 21.
By fitting the convex portions 15b, it is possible to move the coil base 21 in the front and rear directions of the drawing while suppressing the rotation of the coil base 21.
【００１１】図５は本発明に係る回転体支持装置の別実
施例の斜視図であり、上記図２，図３に示す実施の形態
と同様の構成については、同一符号を付し説明を省略す
る。回転体支持装置３１は、第１の回転体支持装置４１
と、第２の回転体支持装置５１とからなる。第１の回転
体支持装置４１は、支持台４２と、この支持台４２に取
付けたモータ４と、ブレーキ機構１０とからなる。FIG. 5 is a perspective view of another embodiment of the rotating body supporting device according to the present invention. The same components as those of the embodiment shown in FIGS. I do. The rotator support device 31 includes a first rotator support device 41.
And a second rotating body supporting device 51. The first rotating body support device 41 includes a support base 42, the motor 4 attached to the support base 42, and the brake mechanism 10.
【００１２】第２の回転体支持装置５１は、支持台５２
と、この支持台５２に取付けたモータ４と、このモータ
４に直結した回転体３と、この回転体３に組み付けたブ
レーキ機構１０とからなる。５３，５４は支持台５２の
底から下方に延ばしたフランジであり、フランジ５３を
モータ４に直結する。フランジ５４をブレーキ機構１０
に取付ける。The second rotating body support device 51 includes a support table 52.
And a motor 4 attached to the support 52, a rotating body 3 directly connected to the motor 4, and a brake mechanism 10 assembled to the rotating body 3. Reference numerals 53 and 54 denote flanges extending downward from the bottom of the support 52, and directly connect the flange 53 to the motor 4. Connect the flange 54 to the brake mechanism 10
Attach to
【００１３】第１・２の回転体支持装置４１，５１にブ
レーキ機構１０，１０を組付けたので、停止に励磁が必
要なく、電気を節約できる。また、回転体支持装置３１
は、第１の回転体支持装置４１で第２の回転体支持装置
５１を矢印方向に回転し、さらに、第２の回転体支持
装置５１で回転体３を矢印方向に直角に回転できるよ
うにしたものである。従って、回転体３をより広範囲に
向けることができる。Since the brake mechanisms 10, 10 are assembled to the first and second rotating body supporting devices 41, 51, excitation is not required for stopping, and electricity can be saved. Also, the rotating body support device 31
Is such that the first rotator support device 41 rotates the second rotator support device 51 in the direction of the arrow, and the second rotator support device 51 allows the rotator 3 to rotate at right angles to the arrow direction. It was done. Therefore, the rotating body 3 can be directed to a wider range.
【００１４】尚、本発明の実施の形態に示した図３の皿
ばね１２を圧縮ばねに替えてもよく、また回転体３に向
って電磁石１１を押出す力が働くものであれば、皿ばね
及び圧縮ばね以外でもよい。また、図３の回転体３に載
せるものは、レンズ２６に限らず、監視カメラや送受信
機、またはこれに類するものであってもよい。さらに、
本発明は実施の形態以外のもの、例えば、産業機械のモ
ータ部等にも使用可能である。The disc spring 12 shown in the embodiment of the present invention shown in FIG. 3 may be replaced with a compression spring. If the force for pushing the electromagnet 11 toward the rotating body 3 acts, the disc spring 12 It may be other than a spring and a compression spring. 3 is not limited to the lens 26, but may be a surveillance camera, a transceiver, or the like. further,
The present invention can also be used for things other than the embodiments, for example, motor parts of industrial machines.
【００１５】[0015]
【発明の効果】本発明は上記構成により次の効果を発揮
する。請求項１では、回転体にばねで静止側の電磁石を
押付け、回転体を停止させるので、回転体停止期間中
は、給電する必要がなく、節電が図れる。また、減速機
を用いず、かつブレーキ機構を、電磁石と、ばねと、永
久磁石とで構成したので、装置がコンパクトになり、省
スペースとなる。さらに、減速機を使わないので、バッ
クラッシュや歯車摩耗に対する配慮も必要ない。According to the present invention, the following effects are exhibited by the above configuration. In the first aspect, the stationary-side electromagnet is pressed against the rotating body by a spring, and the rotating body is stopped. Therefore, it is not necessary to supply power during the rotating body stopped period, and power saving can be achieved. Further, since the brake mechanism is composed of an electromagnet, a spring, and a permanent magnet without using a speed reducer, the device is compact and space-saving. Furthermore, since no reduction gear is used, there is no need to consider backlash and gear wear.
【図１】本発明に係る回転体支持装置の作動原理図FIG. 1 is an operation principle diagram of a rotating body supporting device according to the present invention.
【図２】本発明に係る回転体支持装置として監視カメラ
を支持する支持装置の分解斜視図FIG. 2 is an exploded perspective view of a supporting device that supports a surveillance camera as a rotating body supporting device according to the present invention.
【図３】本発明に係る回転体支持装置として監視カメラ
を支持する支持装置の断面図FIG. 3 is a cross-sectional view of a supporting device that supports a monitoring camera as a rotating body supporting device according to the present invention.
【図４】図３の４−４線断面図FIG. 4 is a sectional view taken along line 4-4 in FIG. 3;
【図５】本発明に係る回転体支持装置の別実施例の斜視
図FIG. 5 is a perspective view of another embodiment of the rotating body support device according to the present invention.
１，３１…回転体支持装置、２…支持台、３…回転体、
４…モータ、１０…ブレーキ機構、１１…電磁石、１２
…弾性手段（皿ばね）、１３…永久磁石、１４…給電
部、１７，２５…軸、４１…第１の回転体支持装置、５
１…第２の回転体支持装置。1, 31 ... rotating body support device, 2 ... support base, 3 ... rotating body,
4 ... motor, 10 ... brake mechanism, 11 ... electromagnet, 12
... elastic means (disc spring), 13 ... permanent magnet, 14 ... feeding part, 17, 25 ... shaft, 41 ... first rotating body support device, 5
1. Second rotating body support device.
Claims (1)
・右軸を支持台に回転可能に取付け、一方の軸にモータ
を配し、他方の軸にブレーキ機構を組込んだ回転体支持
装置であって、前記ブレーキ機構は、通電時に解放状態
となり、非通電時に制動状態となる電磁ブレーキであ
り、支持台に回転体に向って進退可能に取付けた電磁石
と、この電磁石を回転体に向って押出す弾性手段と、前
記回転体に前記電磁石に対向して取付けた永久磁石と、
この永久磁石に対して磁気的に反発する方向の電流を電
磁石に供給する給電部とからなることを特徴とする回転
体支持装置。1. A rotating body having left and right shafts extending from a rotating body, rotatably mounting the left and right shafts on a support base, providing a motor on one shaft, and incorporating a brake mechanism on the other shaft. A support device, wherein the brake mechanism is an electromagnetic brake which is released when energized and is in a braked state when de-energized, and an electromagnet mounted on a support base so as to be able to advance and retreat toward the rotating body; Elastic means for extruding toward, a permanent magnet attached to the rotating body so as to face the electromagnet,
A rotating body support device comprising: a power supply unit that supplies a current in a direction that magnetically repels the permanent magnet to the electromagnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10008941A JPH11215767A (en) | 1998-01-20 | 1998-01-20 | Rotary body supporting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10008941A JPH11215767A (en) | 1998-01-20 | 1998-01-20 | Rotary body supporting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11215767A true JPH11215767A (en) | 1999-08-06 |
Family
ID=11706708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10008941A Pending JPH11215767A (en) | 1998-01-20 | 1998-01-20 | Rotary body supporting equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11215767A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009533301A (en) * | 2006-04-17 | 2009-09-17 | オーチス エレベータ カンパニー | Permanent magnet type elevator disc brake |
-
1998
- 1998-01-20 JP JP10008941A patent/JPH11215767A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009533301A (en) * | 2006-04-17 | 2009-09-17 | オーチス エレベータ カンパニー | Permanent magnet type elevator disc brake |
| US8151950B2 (en) | 2006-04-17 | 2012-04-10 | Otis Elevator Company | Permanent magnet elevator disk brake |
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