JP2577357Y2 - ON / OFF switching device for eddy current type reduction gear - Google Patents
ON / OFF switching device for eddy current type reduction gearInfo
- Publication number
- JP2577357Y2 JP2577357Y2 JP1993020213U JP2021393U JP2577357Y2 JP 2577357 Y2 JP2577357 Y2 JP 2577357Y2 JP 1993020213 U JP1993020213 U JP 1993020213U JP 2021393 U JP2021393 U JP 2021393U JP 2577357 Y2 JP2577357 Y2 JP 2577357Y2
- Authority
- JP
- Japan
- Prior art keywords
- support ring
- eddy current
- cylinder
- magnet
- supported
- 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 - Lifetime
Links
Landscapes
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Description
【0001】[0001]
【産業上の利用分野】この考案は、バスやトラックなど
の大型車両に使用される渦電流式減速装置のON・OF
F切換え装置の改良に関する。BACKGROUND OF THE INVENTION This invention relates to an ON / OF of an eddy current type speed reducer used for large vehicles such as buses and trucks.
The present invention relates to an improvement in an F switching device.
【0002】[0002]
【従来の技術】永久磁石を磁極として使用し、制動時の
通電を必要としない渦電流式減速装置が、種々発明され
ている(特開平1−298948号公報等)。上記永久
磁石方式の渦電流式減速装置は、回転軸に軸支した支持
体に、ヨーク用の磁石支持リングを回転自在に軸支し、
該磁石支持リングに永久磁石の複数個を互いに極性を逆
向きにして周設し、上記永久磁石群の外周磁極面に互い
に磁気的に絶縁した強磁性体の複数個のスイッチ板を対
向せしめ、上記回動自在に軸支した支持リングを支持体
に対し所定角度回動自在に設けてなる。2. Description of the Related Art Various types of eddy current type reduction gears using permanent magnets as magnetic poles and not requiring energization during braking have been invented (Japanese Patent Laid-Open No. 1-298948). The above-mentioned permanent magnet type eddy current type reduction gear is configured such that a magnet support ring for a yoke is rotatably supported on a support supported on a rotating shaft,
A plurality of permanent magnets are provided around the magnet support ring with polarities opposite to each other, and a plurality of magnetically insulated ferromagnetic switch plates are opposed to the outer peripheral magnetic pole surface of the permanent magnet group, The above-mentioned rotatably supported support ring is provided so as to be rotatable by a predetermined angle with respect to the support.
【0003】また、回転軸に軸支した支持体に、ヨーク
用の2つの磁石支持リングの一方を固定支持し、他方を
回動自在に軸支し、該磁石支持リングに永久磁石の複数
個を互いに極性を逆向きにして周設し、上記永久磁石群
の外周磁極面に互いに磁気的に絶縁して強磁性体の複数
のスイッチ板を対向せしめ、上記回動自在に軸支した支
持リングを支持体に対し所定角度回動自在に設けた渦電
流式減速装置が知られている(特開平4−12659号
公報)。Further, one of two magnet support rings for a yoke is fixedly supported on a support supported on a rotating shaft, and the other is rotatably supported on a support, and a plurality of permanent magnets are mounted on the magnet support ring. Are provided around each other with the polarities opposite to each other, and a plurality of ferromagnetic switch plates are magnetically insulated from each other on the outer peripheral magnetic pole surfaces of the permanent magnet group, and the rotatable support ring is supported. There is known an eddy current type speed reducer which is provided so as to be rotatable by a predetermined angle with respect to a support (JP-A-4-12659).
【0004】図2A、Bに示すように、ヨーク用の固定
支持リング5aと回動支持リング5bの2つの磁石支持リ
ングを有する構成の場合、一つのスイッチ板7に対向す
る固定側と回動側の2つの永久磁石6の極性が同一とな
る位置に回動支持リング5bを回動・保持すると、円周
方向に隣接する永久磁石間には隣接するスイッチ板およ
びローター8の円筒部9内周面を含めて磁気回路(図2
Bに矢線で示す)が構成され、いわゆる制動ONの状態
となり、該円筒部内周面には渦電流現象が起こり、これ
により制動トルクが発生し、その制動トルクに見合って
車両は減速される。[0004] Figure 2A, as shown in B, and configurations having two magnet support ring support ring 5 a and the rotating support ring 5 b of the yoke, and fixed-side opposed to one switch plate 7 When the rotating support ring 5b is rotated and held at a position where the polarities of the two permanent magnets 6 on the rotating side are the same, the adjacent switch plate and the cylinder of the rotor 8 are located between the circumferentially adjacent permanent magnets. The magnetic circuit including the inner peripheral surface of the part 9 (FIG. 2)
B is indicated by an arrow), and a so-called braking ON state is formed, and an eddy current phenomenon occurs on the inner peripheral surface of the cylindrical portion, thereby generating a braking torque, and the vehicle is decelerated according to the braking torque. .
【0005】また、上記制動ONの位置から回動支持リ
ング5bを回し、図1A、Bに示すように、一つのスイ
ッチ板7に対向する固定側と回動側の2つの永久磁石6
の極性が互いに逆となる位置に回動支持リング5bを回
動・保持すると、一つのスイッチ板7とこれに対向する
2つの永久磁石間で磁気回路(図1Aに矢線で示す)が
構成され、ローター8の円筒部9内周面には永久磁石6
から発生する磁束が作用しないため、渦電流は流れず制
動トルクは発生せず、いわゆる制動OFFの状態とな
る。Further, from the above-mentioned brake ON position, the rotation support ring 5b is turned to provide two permanent magnets 6 on the fixed side and the rotation side facing one switch plate 7, as shown in FIGS. 1A and 1B.
When the rotation support ring 5b is rotated and held at a position where the polarities of the switches are opposite to each other, a magnetic circuit (indicated by an arrow in FIG. 1A) is formed between one switch plate 7 and two permanent magnets facing the switch plate. The permanent magnet 6 is provided on the inner peripheral surface of the cylindrical portion 9 of the rotor 8.
No eddy current flows, no braking torque is generated, and a so-called braking OFF state occurs.
【0006】上記回動支持リングの回動機構は、支持リ
ングから突設した腕を介して、油圧シリンダー、エアシ
リンダー、電動モーターなどの駆動源と連接したもの
や、ラック・ピニオンやリンク機構等の他の手段を利用
したものなど多岐に及ぶ。The rotation mechanism of the rotation support ring is connected to a drive source such as a hydraulic cylinder, an air cylinder, an electric motor or the like via an arm protruding from the support ring, or a rack and pinion or link mechanism. And other means.
【0007】このときの駆動に要する力はローターとス
テータからなる磁気回路により発生する磁場から、シリ
ンダーは図6に示す所要力を有することが条件となる。
これに見合うだけの大容量の駆動源を設けるため、装置
のコスト増ならびに軽量・コンパクト化を妨げる要因と
なっていた。The force required for driving at this time is determined by the magnetic field generated by the magnetic circuit composed of the rotor and the stator, so that the cylinder must have the required force shown in FIG.
Providing a large-capacity drive source corresponding to this has been a factor that hinders an increase in the cost of the device and a reduction in the size and weight of the device.
【0008】[0008]
【考案が解決しようとする課題】上記のごとく、従来の
永久磁石を使用した渦電流式減速装置は、磁石支持リン
グの回動に大きな力を必要とするため、大型・大容量の
駆動源を設けなくてはならず、減速装置の軽量・コンパ
クト化とコスト低減を果たすことができなかった。As described above, the conventional eddy current type speed reducer using permanent magnets requires a large force to rotate the magnet support ring. The reduction gear had to be provided, and it was not possible to reduce the weight and size of the reduction gear and to reduce the cost.
【0009】この考案は、上記の現状に鑑み、従来の固
定側と回動側の2つの永久磁石を使用した渦電流式減速
装置に見られる欠点を排除することを目的とし、回動支
持リングの回動機構として、シリンダ駆動装置に戻しば
ね装置を備えることにより、回動に必要な駆動力の低減
を図り、軽量・コンパクト化とコスト低減を可能にした
渦電流式減速装置のON・OFF切換え装置を提供する
ものである。The present invention has been made in view of the above situation, and aims to eliminate the drawbacks of a conventional eddy current type speed reducer using two permanent magnets on a fixed side and a rotating side. ON / OFF of the eddy current type speed reducer, which reduces the driving force required for rotation by providing the cylinder drive device with a return spring device as the turning mechanism A switching device is provided.
【0010】[0010]
【課題を解決するための手段】上記目的を達成するた
め、この考案の渦電流式減速装置のON・OFF切換え
装置は、回転軸に軸支した支持体に、ヨーク用の2つの
磁石支持リングの一方を固定支持し、他方を回動自在に
軸支し、該磁石支持リングに永久磁石の複数を互いに極
性を逆向きにして周設し、上記永久磁石群の外周磁極面
に互いに磁気的に絶縁して強磁性体の複数のスイッチ板
を対向せしめ、上記回動自在に軸支した支持リングを支
持体に対し所定角度回動自在に設けた減速装置におい
て、回動自在に軸支した支持リングの回動機構として、
戻しばね装置を備えたシリンダ駆動装置を用い、制動O
N時はシリンダを駆動して戻しばねを圧縮状態に保ち、
制動OFF時はシリンダの流体圧を抜き、戻しストロー
クの初期ストロークは戻しばねのばね力を利用して動か
し、その後のストロークは永久磁石の磁力を利用して動
かすのである。 In order to achieve the above object, the ON / OFF switching device of the eddy current type speed reducer of the present invention comprises two magnet support rings for a yoke on a support supported on a rotating shaft. One is fixedly supported, the other is rotatably supported, and a plurality of permanent magnets are provided around the magnet support ring with the polarities opposite to each other. A plurality of switch plates made of ferromagnetic material are opposed to each other, and the rotatable support ring is rotatably supported in a speed reducer in which the support ring is rotatably provided at a predetermined angle with respect to the support. As a rotation mechanism of the support ring,
Using a cylinder drive with a return spring , brake O
At the time of N, the cylinder is driven to keep the return spring in a compressed state,
When the brake is off, release the cylinder fluid pressure and return the straw.
The initial stroke of the spring moves using the spring force of the return spring.
The subsequent stroke moves using the magnetic force of the permanent magnet.
It is dregs.
【0011】[0011]
【作用】シリンダの駆動により、制動ONの状態に保持
されたのち、制動OFFに切換える際、先ずシリンダの
流体圧を抜くと、図6に示すように、初期ストロークδ
時の所要力は、戻しばねのばね力により駆動され、その
後は永久磁石の磁力だけで動かされ、シリンダの駆動力
は不要である。When the brake is maintained in the ON state by driving the cylinder and then switched to the brake OFF state, when the fluid pressure of the cylinder is first released, as shown in FIG.
The required force at the time is driven by the spring force of the return spring, and thereafter, is driven only by the magnetic force of the permanent magnet, and the driving force of the cylinder is unnecessary.
【0012】そのため、シリンダサイズは、制動ON時
の能力のみを満足できるシリンダサイズで決定すること
ができ、シリンダ駆動装置の設計が容易となり、渦電流
装置全体の軽量・コンパクト化が可能となる。[0012] Therefore, the cylinder size can be determined by a cylinder size that satisfies only the ability at the time of braking ON, and the design of the cylinder driving device is facilitated, and the weight and size of the entire eddy current device can be reduced.
【0013】[0013]
【実施例】この考案の実施例を図面に基づいて説明す
る。図5において、回転軸1に軸受2を介して軸支した
アルミニウム等の非磁性体からなる支持体3に、固定支
持された固定支持リング5aと軸受4を介して軸支され
た回動支持リング5bの2つの磁石支持リングを設け
る。上記固定支持リング5aおよび回動支持リング5b
の外周面には、上下磁極面が回転軸1に対し直角方向の
断面において円弧面をなす永久磁石6の複数個を等間隔
に配設する。An embodiment of the present invention will be described with reference to the drawings. In FIG. 5, a rotation is pivotally supported via a fixed support ring 5 a and a bearing 4 fixedly supported on a support 3 made of a nonmagnetic material such as aluminum which is supported on a rotating shaft 1 via a bearing 2. providing two magnet support ring of the support ring 5 b. The fixed support ring 5a and the rotation support ring 5b
A plurality of permanent magnets 6 whose upper and lower magnetic pole surfaces form an arcuate surface in a cross section perpendicular to the rotation axis 1 are arranged at equal intervals on the outer peripheral surface.
【0014】上記固定支持リング5aと回動支持リング
5bに取着した各永久磁石6群の表面に対向して、強磁
性体からなるスイッチ板7の複数枚を非磁性体の支持部
材を介して等間隔に円周配置して支持体3に一体に取着
する。そして、ローター8を回転軸1に嵌着し、その円
筒部9を所定の空隙をもってスイッチ板7に対向させ
る。[0014] opposite to the surface of the support ring 5 a and the rotating support ring 5 6 groups each permanent magnet attached to b, a support member of a plurality of switches plate 7 made of a ferromagnetic material nonmagnetic , And are circumferentially arranged at equal intervals through and are integrally attached to the support 3. Then, the rotor 8 is fitted on the rotating shaft 1 and the cylindrical portion 9 is opposed to the switch plate 7 with a predetermined gap.
【0015】上記支持体3の一方の端には、円筒部9よ
り大きく突出した車体への取付部16が設けられてい
る。また、この取付部16の内側には永久磁石6を周配
設した回動支持リング5bを回動させるための駆動用の
エアシリンダ10が設けられる。At one end of the support 3, there is provided a mounting portion 16 to the vehicle body that protrudes more than the cylindrical portion 9. A driving air cylinder 10 for rotating the rotation support ring 5b around which the permanent magnet 6 is disposed is provided inside the mounting portion 16.
【0016】上記装置の駆動装置は、図3、図4に示す
ように、エアシリンダ10と戻しばね13から構成され
る。該図面は制動ONの状態である。As shown in FIGS. 3 and 4, the driving device of the above-mentioned device comprises an air cylinder 10 and a return spring 13. The drawing shows a state in which braking is ON.
【0017】エアシリンダ10のピストンロッド11と
回動支持リング5bとの間は、ピン14、15を介して
ヨークリンク12により接続され、一方エアシリンダ1
0と一体的に対設された戻しばね13の当接片13aが
ヨークリンク12の回動支持リング側端に当接してお
り、制動ONの状態では、戻しばねは圧縮されている。[0017] between the piston rod 11 and the rotating support ring 5 b of the air cylinder 10 is connected by a yoke link 12 through a pin 14, whereas the air cylinder 1
The contact piece 13a of the return spring 13 integrally provided with the contact member 0 is in contact with the end of the yoke link 12 on the side of the rotation support ring. When the brake is ON, the return spring is compressed.
【0018】上記制動ONの状態から制動OFFに切換
える際、先ずシリンダの流体圧を抜くと、図6に示すよ
うに、初期ストロークδ時の所要力は、圧縮付勢されて
いる戻しばね13のばね力により駆動され、その後は永
久磁石6の磁力だけで動かされ(図中のマイナス側曲
線)、シリンダの駆動力は不要である。At the time of switching from the brake ON state to the brake OFF state, first, the fluid pressure of the cylinder is released. As shown in FIG. 6, the required force during the initial stroke δ is reduced by the return spring 13 which is being biased by compression. It is driven by a spring force, and thereafter it is moved only by the magnetic force of the permanent magnet 6 (a negative side curve in the figure), and the driving force of the cylinder is unnecessary.
【0019】[0019]
【考案の効果】制動OFFへの切換えは、シリンダ駆動
装置を使用することなく戻しばねと磁石の磁力によりお
こなわれるから、回動に必要な駆動力の低減により、装
置の軽量・コンパクト化とコスト低減が図れる。[Effect of the Invention] Since the switching to the braking OFF is performed by the magnetic force of the return spring and the magnet without using the cylinder driving device, the driving force required for the rotation is reduced, thereby reducing the weight and size of the device and reducing the cost. Reduction can be achieved.
【図1】ヨーク用の2つの磁石支持リングを有する渦電
流式減速装置における制動OFF時の状態を示す説明図
で、Aは縦断側面図、Bは縦断正面図である。FIG. 1 is an explanatory view showing a state when braking is OFF in an eddy current type speed reducer having two magnet support rings for a yoke, where A is a vertical side view and B is a vertical front view.
【図2】ヨーク用の2つの磁石支持リングを有する渦電
流式減速装置における制動ON時の状態を示す説明図
で、Aは縦断側面図、Bは縦断正面図である。FIGS. 2A and 2B are explanatory views showing a state when braking is ON in an eddy current type speed reducer having two magnet support rings for a yoke, where A is a vertical side view and B is a vertical front view.
【図3】この考案の実施によるON・OFF切換え装置
の詳細を一部は破断して示す正面図である。FIG. 3 is a partially cutaway front view showing details of an ON / OFF switching device according to an embodiment of the present invention.
【図4】図3の平面図である。FIG. 4 is a plan view of FIG. 3;
【図5】この考案の実施による渦電流式減速装置の上半
部は破断して示す全体の側面図である。FIG. 5 is an overall side view showing the upper half of the eddy current type speed reducer according to the embodiment of the present invention.
【図6】渦電流式減速装置のON−OFF切換え時のシ
リンダ所要力を示すグラフである。FIG. 6 is a graph showing a cylinder required force at the time of ON-OFF switching of the eddy current type speed reducer.
1 回転軸 2 軸受 3 支持体 4 軸受 5a 固定支持リング 5b 回動支持リング 6 永久磁石 7 スイッチ板 8 ローター 9 円筒部 10 シリンダ 11 ピストンロッド 12 ヨークリンク 13 戻しばね 13a 当接片 14 ピン 15 ピン 16 取付け座 DESCRIPTION OF SYMBOLS 1 Rotation shaft 2 Bearing 3 Support 4 Bearing 5a Fixed support ring 5b Rotation support ring 6 Permanent magnet 7 Switch plate 8 Rotor 9 Cylindrical part 10 Cylinder 11 Piston rod 12 Yoke link 13 Return spring 13a Contact piece 14 Pin 15 Pin 16 Mounting seat
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6,DB名) H02K 49/02──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) H02K 49/02
Claims (1)
2つの磁石支持リングの一方を固定支持し、他方を回動
自在に軸支し、該磁石支持リングに永久磁石の複数を互
いに極性を逆向きにして周設し、上記永久磁石群の外周
磁極面に互いに磁気的に絶縁して強磁性体の複数のスイ
ッチ板を対向せしめ、上記回動自在に軸支した支持リン
グを支持体に対し所定角度回動自在に設けた減速装置に
おいて、上記回動自在に軸支した支持リングの回動機構
として、戻しばね装置を備えたシリンダ駆動装置を用
い、制動ON時はシリンダを駆動して戻しばねを圧縮状
態に保ち、制動OFF時はシリンダの流体圧を抜き、戻
しストロークの初期ストロークは戻しばねのばね力を利
用して動かし、その後のストロークは永久磁石の磁力を
利用して動かすことを特徴とする渦電流式減速装置のO
N・OFF切換え装置。1. A magnet support ring fixed to one of two magnet support rings for a yoke is supported on a support supported by a rotating shaft, and the other is rotatably supported by a plurality of permanent magnets on the magnet support ring. A plurality of switch plates made of ferromagnetic material are magnetically insulated from each other on the outer peripheral magnetic pole surfaces of the group of permanent magnets so as to face each other, and the support ring rotatably supported is provided. the deceleration device which is provided to be freely rotated by a predetermined angle relative to the support member, as the rotation mechanism of the support ring which is pivotally supported above rotating, using a cylinder drive apparatus having a return spring device, braking is ON the cylinder Drives and returns spring is compressed
When braking is OFF, release the cylinder fluid pressure and return
The initial stroke of the extension stroke uses the spring force of the return spring.
The subsequent strokes use the magnetic force of the permanent magnet
Eddy current type speed reducer characterized by using and moving
N / OFF switching device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1993020213U JP2577357Y2 (en) | 1993-03-25 | 1993-03-25 | ON / OFF switching device for eddy current type reduction gear |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1993020213U JP2577357Y2 (en) | 1993-03-25 | 1993-03-25 | ON / OFF switching device for eddy current type reduction gear |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0736591U JPH0736591U (en) | 1995-07-04 |
JP2577357Y2 true JP2577357Y2 (en) | 1998-07-23 |
Family
ID=12020891
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1993020213U Expired - Lifetime JP2577357Y2 (en) | 1993-03-25 | 1993-03-25 | ON / OFF switching device for eddy current type reduction gear |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2577357Y2 (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0297269A (en) * | 1988-10-03 | 1990-04-09 | Fuji Electric Co Ltd | Actuator |
JPH07118901B2 (en) * | 1990-04-28 | 1995-12-18 | いすゞ自動車株式会社 | Eddy current type speed reducer |
JP3028331U (en) * | 1995-02-14 | 1996-09-03 | 有限会社長浜生産技術研究所 | Case for binding of electric and telephone cords |
-
1993
- 1993-03-25 JP JP1993020213U patent/JP2577357Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0736591U (en) | 1995-07-04 |
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