JP2660535B2 - Eddy current type reduction gear - Google Patents
Eddy current type reduction gearInfo
- Publication number
- JP2660535B2 JP2660535B2 JP6163388A JP6163388A JP2660535B2 JP 2660535 B2 JP2660535 B2 JP 2660535B2 JP 6163388 A JP6163388 A JP 6163388A JP 6163388 A JP6163388 A JP 6163388A JP 2660535 B2 JP2660535 B2 JP 2660535B2
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- eddy current
- current type
- reduction gear
- rotating shaft
- 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 - Fee Related
Links
- 239000003638 chemical reducing agent Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910052761 rare earth metal Inorganic materials 0.000 description 4
- 150000002910 rare earth metals Chemical class 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-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
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Landscapes
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 この発明は、バスやトラックなど大型自動車に使用さ
れる渦電流式減速装置の改良に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an eddy current type reduction gear used for a large vehicle such as a bus or a truck.
従来の技術 大型自動車の減速装置ないし制動装置としては、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、長い坂道の降坂時などで安定した減速
を行い、かつフートブレーキの焼損を防止するための渦
電流式減速装置が使用されている。2. Description of the Related Art In addition to the foot brake as the main brake and the exhaust brake as the auxiliary brake, the deceleration or braking device for heavy-duty vehicles performs stable deceleration when descending on a long hill, etc. To prevent this, an eddy current type speed reducer is used.
この渦電流式減速装置は、鉄心に電磁コイルを巻着し
た電磁石を磁極として、その磁極の多数をディスクの両
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させる方
向にトルクを発生させ制動力を得るものである（特開昭
50−61574号公報）。This eddy current type speed reducer has an electromagnet in which an electromagnetic coil is wound around an iron core as a magnetic pole, and a large number of the magnetic poles are arranged on both sides of the disk. A torque is generated in the direction of decelerating the disk to obtain a braking force (Japanese Patent Application 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、重量が重たく、
かつ外形寸法も大きいので、空間の限定された車両搭載
は不利である。また、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機能力の増強が必要とな
る。Problems to be Solved by the Invention Since the conventional eddy current type speed reducer uses an electromagnet in which an electromagnetic coil is wound around an iron core as a magnetic pole, the weight is heavy,
Moreover, since the external dimensions are large, it is disadvantageous to mount the vehicle in a limited space. Further, since the power consumption of the battery is severe, it is necessary to increase the battery capacity and the power generation function.
この発明は、かかる問題点を排除することを目的に、
永久磁石を使用すると共にON−OFF操作を比較的に消費
電力の少ない電磁クラッチを使用した渦電流式減速装置
を提供するものである。The present invention aims to eliminate such problems,
An object of the present invention is to provide an eddy current type speed reducer using an electromagnetic clutch which uses a permanent magnet and has relatively low power consumption for ON-OFF operation.
課題を解決するための手段 上記目的を達成するため、この発明の渦電流式減速装
置は、回転軸に軸支した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、軸受けを介して回転
軸に軸支したローターを所定空隙を介して上記永久磁石
に対向せしめ、ローターと回転軸とを電磁的に断続する
電磁クラッチを設けたものである。Means for Solving the Problems In order to achieve the above object, an eddy current type speed reducer according to the present invention comprises a plurality of permanent magnets provided around a support ring which is supported on a rotating shaft with the polarities thereof being opposite to each other. And a rotor that is supported by a rotating shaft through a predetermined gap to face the permanent magnet, and an electromagnetic clutch that electromagnetically connects and disconnects the rotor and the rotating shaft is provided.
作用 ローターは軸受けを介して回転自在に回転軸に軸支さ
れており、車両のプロペラシャフトに接続した回転軸が
回転していてもローターは停止している。減速を必要と
する際電磁クラッチの電磁コイルに通電して電磁クラッ
チを介してローターを回転軸に接続し回転せしめると、
ローター内を流れる渦電流により制動トルクが発生し減
速が行われる。The rotor is rotatably supported by a rotating shaft via a bearing, and the rotor is stopped even when the rotating shaft connected to the propeller shaft of the vehicle is rotating. When deceleration is required, energizing the electromagnetic coil of the electromagnetic clutch and connecting the rotor to the rotating shaft via the electromagnetic clutch and rotating it,
The braking torque is generated by the eddy current flowing in the rotor, and the deceleration is performed.
実施例 この発明の実施例を図面に基いて説明する。Embodiment An embodiment of the present invention will be described with reference to the drawings.
第１図に示すように、回転軸（１）に嵌着した軸筒
（２）に軸受（３）を介して回転自在に軸支した支持体
（４）に支持リング（５）を設け、この支持リング
（５）の外周面にポールピース（６）を重ね合せた永久
磁石（７）の偶数個を互いに極性が逆向きとなるように
して周設する。As shown in FIG. 1, a support ring (5) is provided on a support (4) rotatably supported via a bearing (3) on a shaft cylinder (2) fitted on a rotating shaft (1), An even number of permanent magnets (7) in which a pole piece (6) is superimposed on the outer peripheral surface of the support ring (5) are provided so as to have opposite polarities.
またコ型断面のローター（８）を軸受（９）を介して
軸筒（２）に回転自在に軸支し、ローター（８）の円筒
部内周面を所要空隙を介して上記ポールピース（６）に
対向させる。そして軸筒（２）とローター（８）との間
に軸筒（２）とローター（８）を電磁的に断続する電磁
クラッチ（10）を設け、軸筒（２）側に設けた電磁コイ
ル（11）に通電したときクラッチが接続しローター
（８）が回転軸（１）と共に回転するように構成する。Further, a rotor (8) having a U-shaped cross section is rotatably supported on a shaft cylinder (2) via a bearing (9), and the inner peripheral surface of the cylindrical portion of the rotor (8) is inserted through a required gap into the pole piece (6). ). An electromagnetic clutch (10) for electromagnetically connecting and disconnecting the shaft cylinder (2) and the rotor (8) is provided between the shaft cylinder (2) and the rotor (8), and an electromagnetic coil provided on the shaft cylinder (2) side. When the power is supplied to (11), the clutch is connected and the rotor (8) rotates together with the rotating shaft (1).
なお、図中の（12）はローターの外周面に設けた冷却
フィン、（13）は支持体（４）を車体に固定するための
取付け板である。また、永久磁石は磁気特性の優れた希
土類コバルト系磁石、希土類・鉄・硼素系磁石などの希
土類磁石の使用が望ましい。In the drawing, (12) is a cooling fin provided on the outer peripheral surface of the rotor, and (13) is a mounting plate for fixing the support (4) to the vehicle body. As the permanent magnet, it is desirable to use a rare-earth magnet such as a rare-earth cobalt-based magnet or a rare-earth / iron / boron-based magnet having excellent magnetic properties.
上記装置は、回転軸（１）の両側端を十字形継手を介
して車両のプロペラシャフトの途中に接続し、取付け板
（13）を車体に取着する。したがって、制動する際は運
転室に設けたスイッチを入れ電磁コイル（11）に通電す
れば電磁クラッチ（10）が働きローター（８）が回転し
始め制動トルクが発生して車両は減速する。そして、電
磁コイル（11）への通電を止めれば電磁クラッチ（10）
が切れローラー（８）は停止し制動が解除される。In the above device, both ends of the rotating shaft (1) are connected to the middle of the propeller shaft of the vehicle via a cross joint, and the mounting plate (13) is attached to the vehicle body. Therefore, when braking, a switch provided in the driver's cab is turned on and the electromagnetic coil (11) is energized to activate the electromagnetic clutch (10), the rotor (8) starts rotating, and a braking torque is generated to decelerate the vehicle. Then, if the power supply to the electromagnetic coil (11) is stopped, the electromagnetic clutch (10)
The roller (8) stops and the braking is released.
第２図はこの発明の他の実施例を示すものであり、第
１図に示す実施例との相違は電磁クラッチ（10）及び電
磁コイル（11）をローター（８）の外側に設置したこと
にある。この実施例によればローター（８）内方に永久
磁石（７）に近接して空洞（14）ができ、この空洞（1
4）を利用して永久磁石（７）の強制冷却を目的とした
熱交換器を設置することができ、高性能永久磁石として
の希土類磁石の性能を維持するのに有効である。FIG. 2 shows another embodiment of the present invention. The difference from the embodiment shown in FIG. 1 is that the electromagnetic clutch (10) and the electromagnetic coil (11) are installed outside the rotor (8). It is in. According to this embodiment, a cavity (14) is formed inside the rotor (8) close to the permanent magnet (7), and the cavity (1) is formed.
The heat exchanger for the purpose of forcibly cooling the permanent magnet (7) can be installed by using 4), which is effective for maintaining the performance of the rare earth magnet as a high-performance permanent magnet.
電磁クラッチの構成、配置は第１図，第２図の実施例
以外にローターと回転軸とを電磁的に接続または遮断す
るものであれば、公知の構成からなる電磁クラッチを所
要位置に適宜配置することが可能である。The construction and arrangement of the electromagnetic clutch is not limited to the embodiment shown in FIGS. 1 and 2, and an electromagnetic clutch having a known construction may be appropriately arranged at a required position as long as the electromagnetic clutch connects or disconnects the rotor and the rotating shaft. It is possible to
また、上記実施例においては磁石の磁極面にポールピ
ースを貼着した構成を示すが、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。Further, in the above embodiment, a configuration is shown in which a pole piece is attached to the magnetic pole surface of the magnet, but the pole piece is not an indispensable member for achieving the present invention.
発明の効果 この発明は、以上の構成からなり、制動トルクを発生
させるためのローターは電磁クラッチを介して制動時の
み回転させるため、機構的に単純化でき、電磁石を使用
した減速装置に比べ軽量化され、また操作も極めて簡単
である。Effect of the Invention The present invention has the above configuration, and the rotor for generating the braking torque is rotated only during braking via the electromagnetic clutch, so that it can be mechanically simplified, and is lighter than the reduction gear using an electromagnet. And operation is extremely simple.
第１図はこの発明の一実施例をその上半部は断面して示
す正面図、第２図は他の実施例をその上半部は断面して
示す正面図である。 １……回転軸、２……軸筒 3,9……軸受、４……支持体 ５……支持リング、６……ポールピース ７……永久磁石、８……ローター 10……電磁クラッチ、11……電磁コイル 12……冷却フィン、13……取付け板 14……空洞FIG. 1 is a front view showing an embodiment of the present invention in an upper half section, and FIG. 2 is a front view showing another embodiment in an upper half section. 1 ... rotating shaft, 2 ... shaft cylinder 3, 9 ... bearing, 4 ... support body 5 ... support ring, 6 ... pole piece 7 ... permanent magnet, 8 ... rotor 10 ... electromagnetic clutch, 11 Electromagnetic coil 12 Cooling fins 13 Mounting plate 14 Hollow
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小林 隆 大阪府三島郡島本町江川２丁目15―17 住友特殊金属株式会社山崎製作所内 (56)参考文献 特開 昭61−192441（ＪＰ，Ａ) 特開 昭50−61574（ＪＰ，Ａ) 実公 昭53−9810（ＪＰ，Ｙ１) ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Takashi Kobayashi 2-15-17 Egawa, Shimamoto-cho, Mishima-gun, Osaka Sumitomo Special Metals Co., Ltd. Yamazaki Works (56) References JP-A-61-192441 (JP, A) Japanese Patent Application Laid-Open No. Sho 50-61574 (JP, A) Japanese Utility Model Publication No. Sho 53-9810 (JP, Y1)
Claims (1)
複数を互いに極性を逆向きにして周設し、軸受けを介し
て回転軸に軸支したローターを所定空隙を介して上記永
久磁石に対向せしめ、ローターと回転軸とを電磁的に断
続する電磁クラッチを設けてなる渦電流式減速装置。1. A plurality of permanent magnets are provided around a support ring which is supported on a rotating shaft with the polarities thereof being opposite to each other. An eddy current type reduction gear comprising an electromagnetic clutch which electromagnetically connects and disconnects a rotor and a rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6163388A JP2660535B2 (en) | 1988-03-14 | 1988-03-14 | Eddy current type reduction gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6163388A JP2660535B2 (en) | 1988-03-14 | 1988-03-14 | Eddy current type reduction gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01234045A JPH01234045A (en) | 1989-09-19 |
| JP2660535B2 true JP2660535B2 (en) | 1997-10-08 |
Family
ID=13176794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6163388A Expired - Fee Related JP2660535B2 (en) | 1988-03-14 | 1988-03-14 | Eddy current type reduction gear |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2660535B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0580178U (en) * | 1992-03-30 | 1993-10-29 | 住友金属工業株式会社 | Eddy current type speed reducer |
| US9933032B2 (en) * | 2012-08-13 | 2018-04-03 | Nippon Steel & Sumitomo Metal Corporation | Eddy-current retarding device |
-
1988
- 1988-03-14 JP JP6163388A patent/JP2660535B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01234045A (en) | 1989-09-19 |
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Legal Events
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|---|---|---|---|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
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| R250 | Receipt of annual fees |
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| LAPS | Cancellation because of no payment of annual fees |