JPH01234043A - Eddy current type speed reducer - Google Patents
Eddy current type speed reducerInfo
- Publication number
- JPH01234043A JPH01234043A JP6163188A JP6163188A JPH01234043A JP H01234043 A JPH01234043 A JP H01234043A JP 6163188 A JP6163188 A JP 6163188A JP 6163188 A JP6163188 A JP 6163188A JP H01234043 A JPH01234043 A JP H01234043A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- braking force
- rotary shaft
- eddy current
- axial direction
- 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
- 239000003638 chemical reducing agent Substances 0.000 title description 3
- 238000001816 cooling Methods 0.000 abstract description 3
- 229910052761 rare earth metal Inorganic materials 0.000 description 6
- 150000002910 rare earth metals Chemical class 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、パスやトラックなど大型自動中に使用され
る渦電流式減速装置の改良に関する。DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION This invention relates to improvements in eddy current speed reducers used in large motor vehicles such as buses and trucks.
従来の技術
大型自動車の減速装置ないし111動装置としては、主
ブレーキであるフートブレーキ、補助ブレーキである排
気ブレーキのほか、長い坂道の降板115などて安定し
た減速を行い、かつフートブレーキの焼損を防止するた
め渦電流式減速装置か使用されている。Conventional technology In addition to the main brake, which is a foot brake, and the auxiliary brake, which is an exhaust brake, the deceleration device or 111 motion device for a large vehicle provides stable deceleration, such as when descending a long slope, and prevents burnout of the foot brake. Eddy current reduction devices are used to prevent this.
この渦電流式減速装置は、鉄心に電磁コイルを巻着した
電磁石を限外として、その磁極の多数を1イスクの両面
に配設してなり、バッテリ電源からの通電により磁界を
発生させ、渦電流現象によりディスクを減速ざける方向
にトルクを発生させ制動力をj7るものである(特開昭
50−61574号公報)。This eddy current type reduction gear consists of an electromagnet with an electromagnetic coil wound around an iron core, and many of its magnetic poles are arranged on both sides of one disk.A magnetic field is generated by electricity from a battery power supply, and an eddy current is generated. The braking force is increased by generating torque in the direction of decelerating the disk by means of an electric current phenomenon (Japanese Patent Laid-Open No. 50-61574).
発明が解決しようとする課題
従来の渦電流式減速装置は、鉄心に電磁コイルを巻着し
た電磁石を磁極として使用するため、組型が単たく、か
つ外形寸法も大きいので、空間の限定された車両塔・戊
は不利である。また、制動ON時は常時通電しておく必
要かあり、バッテリの電力消耗が激しいためバッテリ容
量の増大及び発電は(jヒカの増強か必要となる。Problems to be Solved by the Invention Conventional eddy current reduction gears use electromagnets with electromagnetic coils wound around iron cores as magnetic poles, so they have a simple assembly type and large external dimensions, so they require limited space. Vehicle towers and 戊 are at a disadvantage. Also, when the brake is on, it is necessary to keep the power on all the time, and the battery power consumption is severe, so increasing the battery capacity and power generation is necessary.
この発明は、かかる問題点を排除することを目的に、1
11動時の通電が短時間ですむ渦電流式減速装置を提供
することを目的とする。This invention aims to eliminate such problems by:
It is an object of the present invention to provide an eddy current type speed reduction device that requires only a short time of energization during operation.
課題を解決するための手段
上配り的を達成するために、渦電流式減速装置において
、回転軸の片側端部にローターを嵌着し、隣接する磁石
の極性が互い)こ逆向ざとなるようにして複数個の永久
磁石を周設した支持リングを、上記回転軸の軸線方向に
永久磁石の極面が所要空隙でローターに全面対向する位
置から全面離脱する位置までの長さを進退自在に設ける
ことにおる。Means for Solving the Problem In order to achieve the desired distribution, in an eddy current reduction gear, a rotor is fitted to one end of the rotating shaft, and the polarities of adjacent magnets are opposite to each other. A support ring having a plurality of permanent magnets surrounding it is provided so as to be movable back and forth in the axial direction of the rotating shaft, from a position where the pole faces of the permanent magnets completely face the rotor with a required gap to a position where they completely separate from the rotor. It's in particular.
なお、上記永久磁石は希土類コバルト系磁石、希土類・
鉄・硼素系磁石などの磁気特性の優れた希土類磁石を使
用することが望ましい。The permanent magnets mentioned above are rare earth cobalt magnets, rare earth magnets,
It is desirable to use rare earth magnets with excellent magnetic properties, such as iron/boron magnets.
作 用
上記のごとく構成された減速装置の永久vi1石を周設
した支持リングを移動して、永久磁石をローターに全面
対向させると、隣接する永久磁石間ごとに構成される磁
気回路によりローターには渦電流が流れ、大きな制動ト
ルクが発生する。Operation When the support ring surrounding the permanent magnets of the speed reducer configured as described above is moved so that the permanent magnets completely face the rotor, the magnetic circuit configured between adjacent permanent magnets causes the rotor to move. , eddy currents flow and large braking torque is generated.
そして、上記のローターに全面対向した永久磁石を次第
に後退させれば発生する制動トルクは次第に小さくなり
制動力が減少し、永久磁石が後退し終ってローターから
全面離脱すれば制動は解除される。Then, when the permanent magnets facing the rotor are gradually retreated, the generated braking torque gradually decreases and the braking force is reduced, and when the permanent magnets completely separate from the rotor after retreating, the braking is released.
実施例 この発明の実施例を図面に基いて説明する。Example Embodiments of this invention will be described based on the drawings.
第1図、第2図に示すように、回転軸(1)の片側端部
にコ形断面で外周面に冷却フィン(2)を有するロータ
ー(3)を嵌着し、また回転軸(1)に軸支した軸受箱
筒(4)に放射状配置で軸線方向に伸びた支持部vJ(
5)の複数(図面には3個の場合を示す)を突設し、そ
の支持部材(5)の頂面にそれぞれカイトレール(6)
を取着する。ローター(3)の円筒部に対応する筒長さ
の支持リング(7)の内周面に上記ガイドレール(6)
に跨架するスライド鞍(8)を設け、支持リング(7)
がガイドレール(6)上を移動してローター(3)に対
し進退できるように設ける。そして、支持リング(7)
の外周面にはポールピース(9)を貼着した希土類磁石
からなる永久磁石(10)の複数個(図面には12個(
偶@個)の場合を示す)を隣接する磁石の磁極が互いに
逆向ざとなるようにして周設する。As shown in FIGS. 1 and 2, a rotor (3) having a U-shaped cross section and cooling fins (2) on the outer peripheral surface is fitted to one end of the rotating shaft (1). ) is supported by supporting parts vJ(
A plurality of kite rails (6) are provided on the top surface of the support member (5).
to be installed. The guide rail (6) is attached to the inner peripheral surface of the support ring (7) with a cylinder length corresponding to the cylindrical part of the rotor (3).
A slide saddle (8) is provided that straddles the support ring (7).
is provided so that it can move on the guide rail (6) and move forward and backward with respect to the rotor (3). And the support ring (7)
There are a plurality of permanent magnets (10) made of rare earth magnets (12 in the drawing) with pole pieces (9) attached to the outer peripheral surface of the
(showing the case of even @ pieces)) are placed around the circumference so that the magnetic poles of adjacent magnets are oriented in opposite directions.
上記ローター(3)の円筒部の延長線上に同内径の円筒
(11)を、ローター(3)とは切り離して軸受箱筒(
4)の端面に取着した蓋板(12)に行段し、円筒(1
1)と蓋板(12)で磁気シールドケーシングを形成し
、装置外へ磁気が漏洩しないように構成する。A cylinder (11) with the same inner diameter is placed on the extension line of the cylindrical part of the rotor (3), separated from the rotor (3), and a bearing housing cylinder (
The lid plate (12) attached to the end face of the cylinder (1)
1) and the cover plate (12) form a magnetically shielded casing to prevent magnetism from leaking outside the device.
また、ローター(3)とケーシングを構成する内筒(1
1)とを共に磁束を通しやすい材質(例えばFθなど)
から構成することにより永久磁石(10)の進退を円滑
に行うことができる。ケーシングの構成は実施例に示す
ものだ【ブに限らず、磁気シールド効果を有し永久磁石
(10)の進退をさまたげない構成であれば任意に選定
できる。そして、上記支持リング(7)の内周面に設け
た3つのスライド鞍(8)の各中間点にナツト(13)
を突設し、このナツトに螺合するねし棒(14)の一端
を上記蓋板(12)に取着した軸受(15)に軸支する
。上記ねじ捧(14)の軸支端部寄りには歯車(16)
が設けられ、軸受箱筒(4)に軸受(17)により軸支
された大径の中間歯車(18)と噛合する。さらに中間
歯車(18)は蓋板(12)に取着したモータ(19)
の主軸に設けた駆動歯車(20) (第4図参照)と噛
合する。In addition, the rotor (3) and the inner cylinder (1
1) A material that allows magnetic flux to pass through easily (such as Fθ)
With this structure, the permanent magnet (10) can be moved back and forth smoothly. The structure of the casing is not limited to the one shown in the embodiment, but any structure can be selected as long as it has a magnetic shielding effect and does not hinder the movement of the permanent magnet (10). A nut (13) is attached to each intermediate point of the three slide saddles (8) provided on the inner peripheral surface of the support ring (7).
is provided in a protruding manner, and one end of a threaded rod (14) which is screwed into this nut is pivotally supported by a bearing (15) attached to the cover plate (12). A gear (16) is located near the shaft support end of the screw foot (14).
is provided and meshes with a large-diameter intermediate gear (18) that is pivotally supported by a bearing (17) in a bearing box tube (4). Furthermore, the intermediate gear (18) is a motor (19) attached to the cover plate (12).
The drive gear (20) (see Fig. 4) meshes with the drive gear (20) provided on the main shaft.
上記減速装置は円筒(11)に設けた取付は金具(21
)を車体へ取着し、回転軸(月の両端を十字継手を介し
てプロペラシ、ヤフトの中間に接続する。The above reduction gear is mounted on a cylinder (11) with a metal fitting (21).
) to the vehicle body, and connect both ends of the rotating shaft (the moon) to the middle of the propeller and shaft via cross joints.
この減速装置は第3図に示すように、支持リング(7)
が後)vして永久磁石群がローター(3)から離脱した
位置にあるときは、ローター(3)内に渦電流は流れな
いため、ローター(3)は所定のトルクで回転しており
、いわゆるブレーキOFFの状態にある。As shown in Fig. 3, this speed reduction device has a support ring (7).
When the permanent magnet group is in a position separated from the rotor (3) after (after) v, no eddy current flows in the rotor (3), so the rotor (3) rotates with a predetermined torque, It is in a so-called brake OFF state.
このブレーキOFFの状態でモータ(19)を始動すれ
ば、駆動歯車(20)、中間歯車(18)及び歯(ド(
16)を経てねじ棒(14)が回転し、ナツト(13)
を介して支持リング(7)はロータ(3)側へ前進し、
ついにはローター(3)の円筒部内面に所定空隙を介し
てポールピース(9)の全面が対向する。このとき最大
の制動1〜ルクが17られ、車両は大きく減速する。If the motor (19) is started with the brake OFF, the drive gear (20), intermediate gear (18), and teeth (
16), the threaded rod (14) rotates, and the nut (13)
The support ring (7) advances toward the rotor (3) through the
Finally, the entire surface of the pole piece (9) faces the inner surface of the cylindrical portion of the rotor (3) with a predetermined gap in between. At this time, the maximum braking torque of 1 to 17 is applied, and the vehicle is greatly decelerated.
この最大の制動トルクが得られる状態からモータ(19
)を先とは逆向きに回転させ、支持リング(7)すなわ
ら永久磁石群を後退させると、ローターと永久磁石との
対向面積が減少するに従って111動トルクは減少し、
再び第3図のブレーキ叶Fの状態にもどる。From this state where the maximum braking torque is obtained, the motor (19
) is rotated in the opposite direction to the previous one and the support ring (7), that is, the permanent magnet group is retreated, the 111 dynamic torque decreases as the opposing area between the rotor and the permanent magnets decreases,
The state returns to the state of brake leaf F in Fig. 3 again.
したかって、制動力が少なくてよい場合には、永久磁石
とローターとの対向面積か全面対応と全面離脱の中間位
置にあるように磁石の進退を加減すればよい。その制御
は各種の位置レンサー(図面省略)を組込みモーターの
駆動を制御すればよい。上記実施例においては、磁石磁
極面にポールピースを貼着した構成を示したが、該ポー
ルピースはこの発明を達成する上で不可欠の部材ではな
い。Therefore, if a small braking force is required, it is sufficient to adjust the advance and retreat of the magnets so that the opposing area between the permanent magnet and the rotor is at an intermediate position between full-face contact and full-face separation. This can be controlled by incorporating various position sensors (not shown) and controlling the drive of the motor. In the above embodiment, a configuration in which a pole piece is attached to the magnetic pole face of the magnet is shown, but the pole piece is not an essential member for achieving the present invention.
tl制御1〜ルク試験を行った結果を第5図に示す。The results of the tl control 1 to lux tests are shown in FIG.
すなわら、各車速において希土類磁石を全面対応させた
場合A、374面対応させた場合B、及び1/2面対応
させた場合について制動1−ルクを測定した結果である
。In other words, these are the results of measuring the braking 1-lux at each vehicle speed in case A when the rare earth magnet is applied to the entire surface, case B when it is applied to 374 surfaces, and case when it is applied to 1/2 surface.
また、永久磁石の進退はねじ俸とナラlへによるねじ力
を利用したか、これに限ることなく他の機構を利用する
ことができる。Further, the permanent magnet can be moved back and forth by using the screw force exerted by the screw ball and the nut l, but is not limited to this, and other mechanisms can be used.
発明の効果
この発明は上記のごとく構成されており、ローターと永
久磁石の対応面積を変えることにより発生する制動1ヘ
ルクか加減できるため、制動力の制御か容易で広範囲の
減速に適用できる。Effects of the Invention The present invention is constructed as described above, and the braking force generated can be increased or decreased by one herk by changing the corresponding area between the rotor and the permanent magnet, so the braking force can be easily controlled and applied to a wide range of decelerations.
第1図はこの発明の実施による減速装置の制動状態にお
ける縦断面図、@2図は第1図A−A線上の側面図、第
3図は非制動状態における縦断面図、第4図は第1図の
右側面図で永久磁石群を有する支持リングを進退させる
ための駆動系の概略を示す説明図、第5図は希土類磁石
を使用した減速装置の車速と制動1〜ルクの関係を示す
グラフである。
1・・・回転軸 2・・・冷却フィン3・・
・ローター 4・・・軸受箱筒5・・・支持
部(A6・・・ガイドレール7・・・支持リング
8・・・スライド鞍9・・・ポールピース 10
・・・永久磁石11・・・円筒 12・・
・蓋板13・・・ナラ1へ 14・・・ね
じ棒15・・・軸受 16・・・歯車17・
・・軸受 18・・・中間歯車19・・・
モータ 20・・・駆動歯車出願人 住友
金属工業株式会社
同 住友特殊金屈株式会社Fig. 1 is a longitudinal cross-sectional view of a speed reduction device according to the present invention in a braking state, Fig. 2 is a side view taken along line A-A in Fig. 1, Fig. 3 is a longitudinal cross-sectional view in a non-braking state, and Fig. 4 is The right side view of Fig. 1 is an explanatory diagram showing the outline of the drive system for advancing and retracting the support ring having a group of permanent magnets, and Fig. 5 shows the relationship between vehicle speed and braking torque of the reduction gear using rare earth magnets. This is a graph showing. 1...Rotating shaft 2...Cooling fins 3...
・Rotor 4...Bearing box cylinder 5...Support part (A6...Guide rail 7...Support ring
8...Slide saddle 9...Pole piece 10
...Permanent magnet 11...Cylinder 12...
・Cover plate 13...To oak 1 14...Threaded rod 15...Bearing 16...Gear 17.
... Bearing 18 ... Intermediate gear 19 ...
Motor 20... Drive gear Applicant: Sumitomo Metal Industries, Ltd. Sumitomo Special Kinku Co., Ltd.
Claims (1)
石の極性が互いに逆向ざとなるようにして複数個の永久
磁石を周設した支持リングを、上記回転軸の軸線方向に
永久磁石の極面が所要空隙でローターに全面対向する位
置から全面離脱する位置までの長さを進退自在に設けた
渦電流式減速装置。1. A rotor is fitted to one end of a rotating shaft, and a support ring having a plurality of permanent magnets surrounding it so that the polarities of adjacent magnets are opposite to each other is attached to the rotor in the axial direction of the rotating shaft. An eddy current reduction gear whose length can be freely moved back and forth from the position where the pole face completely faces the rotor to the position where it completely separates from the rotor with the required gap.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63061631A JP2709821B2 (en) | 1988-03-14 | 1988-03-14 | Eddy current type reduction gear |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63061631A JP2709821B2 (en) | 1988-03-14 | 1988-03-14 | Eddy current type reduction gear |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01234043A true JPH01234043A (en) | 1989-09-19 |
JP2709821B2 JP2709821B2 (en) | 1998-02-04 |
Family
ID=13176732
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63061631A Expired - Lifetime JP2709821B2 (en) | 1988-03-14 | 1988-03-14 | Eddy current type reduction gear |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2709821B2 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03128661A (en) * | 1989-10-11 | 1991-05-31 | Isuzu Motors Ltd | Eddy current type retarder |
JPH046288U (en) * | 1990-04-28 | 1992-01-21 | ||
JPH046287U (en) * | 1990-04-28 | 1992-01-21 | ||
JPH0428782U (en) * | 1990-06-28 | 1992-03-06 | ||
JPH04168970A (en) * | 1990-10-30 | 1992-06-17 | Isuzu Motors Ltd | Eddy current type reduction gear |
JPH0662790U (en) * | 1993-02-12 | 1994-09-02 | 住友金属工業株式会社 | Eddy current type speed reducer |
WO1998036488A1 (en) * | 1997-02-12 | 1998-08-20 | Zf Friedrichshafen Ag | Hysteresis brake |
CN102497085A (en) * | 2011-12-23 | 2012-06-13 | 浙江大学 | Permanent-magnet eddy current retarder based on Halbach array |
WO2014027653A1 (en) | 2012-08-13 | 2014-02-20 | 新日鐵住金株式会社 | Fluid-type deceleration device |
DE10313855B4 (en) * | 2003-03-26 | 2015-09-10 | Chr. Mayr Gmbh & Co. Kg | Hysteresis clutch or brake |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS539810U (en) * | 1975-10-29 | 1978-01-27 | ||
JPS6152493U (en) * | 1984-09-07 | 1986-04-09 |
-
1988
- 1988-03-14 JP JP63061631A patent/JP2709821B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS539810U (en) * | 1975-10-29 | 1978-01-27 | ||
JPS6152493U (en) * | 1984-09-07 | 1986-04-09 |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03128661A (en) * | 1989-10-11 | 1991-05-31 | Isuzu Motors Ltd | Eddy current type retarder |
JPH046288U (en) * | 1990-04-28 | 1992-01-21 | ||
JPH046287U (en) * | 1990-04-28 | 1992-01-21 | ||
JPH0428782U (en) * | 1990-06-28 | 1992-03-06 | ||
JPH04168970A (en) * | 1990-10-30 | 1992-06-17 | Isuzu Motors Ltd | Eddy current type reduction gear |
JPH07118903B2 (en) * | 1990-10-30 | 1995-12-18 | いすゞ自動車株式会社 | Eddy current type speed reducer |
JPH0662790U (en) * | 1993-02-12 | 1994-09-02 | 住友金属工業株式会社 | Eddy current type speed reducer |
WO1998036488A1 (en) * | 1997-02-12 | 1998-08-20 | Zf Friedrichshafen Ag | Hysteresis brake |
DE10313855B4 (en) * | 2003-03-26 | 2015-09-10 | Chr. Mayr Gmbh & Co. Kg | Hysteresis clutch or brake |
CN102497085A (en) * | 2011-12-23 | 2012-06-13 | 浙江大学 | Permanent-magnet eddy current retarder based on Halbach array |
WO2014027653A1 (en) | 2012-08-13 | 2014-02-20 | 新日鐵住金株式会社 | Fluid-type deceleration device |
US9656643B2 (en) | 2012-08-13 | 2017-05-23 | Nippon Steel & Sumitomo Metal Corporation | Retarding device using a fluid |
Also Published As
Publication number | Publication date |
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JP2709821B2 (en) | 1998-02-04 |
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