JP2000069740A - Eddy current reduction gear - Google Patents
Eddy current reduction gearInfo
- Publication number
- JP2000069740A JP2000069740A JP10251867A JP25186798A JP2000069740A JP 2000069740 A JP2000069740 A JP 2000069740A JP 10251867 A JP10251867 A JP 10251867A JP 25186798 A JP25186798 A JP 25186798A JP 2000069740 A JP2000069740 A JP 2000069740A
- Authority
- JP
- Japan
- Prior art keywords
- eddy current
- drum
- current reduction
- reduction device
- fins
- 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
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は主として車両の摩擦
ブレーキを補助する永久磁石または電磁石を用いた渦電
流減速装置、特に制動ドラムの加工が容易で放熱性に優
れた渦電流減速装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an eddy current reduction device mainly using a permanent magnet or an electromagnet for assisting a friction brake of a vehicle, and more particularly to an eddy current reduction device which is easy to process a braking drum and has excellent heat dissipation. is there.
【０００２】[0002]
【従来の技術】例えば、磁石支持筒を磁石の配列ピツチ
分だけ正逆回動させて、制動と非制動との切換えを行う
形式の従来の渦電流減速装置では、図８に示す磁石支持
筒１６，１７を収容する案内筒４と、図９に示す案内筒
４の外周面を覆う制動ドラム２とからなる。断面長方形
の内空部を有する案内筒４は非磁性体からなり、外筒部
に多数の強磁性板５が周方向等間隔に一体的に結合され
ており、内筒部に可動の磁石支持筒１６と不動の磁石支
持筒１７とが支持される。各支持筒１６，１７には強磁
性板５に全面的に対向する磁石６，７が結合される。強
磁性板５に対向する磁石６，７の極性は周方向に交互に
異なるように配される。案内筒４は左端部に結合した取
付フランジ４ｄを車体の非回転部分に支持される。2. Description of the Related Art For example, in a conventional eddy current reduction device of the type in which a magnet support cylinder is rotated forward and backward by an arrangement pitch of magnets to switch between braking and non-braking, a magnet supporting cylinder shown in FIG. The guide cylinder 4 accommodates the guide cylinders 16 and 17 and the braking drum 2 that covers the outer peripheral surface of the guide cylinder 4 shown in FIG. The guide cylinder 4 having an inner space with a rectangular cross section is made of a non-magnetic material, and a number of ferromagnetic plates 5 are integrally connected to the outer cylinder at equal intervals in the circumferential direction. The cylinder 16 and the stationary magnet support cylinder 17 are supported. Magnets 6, 7 entirely facing the ferromagnetic plate 5 are coupled to the support cylinders 16, 17. The polarities of the magnets 6 and 7 facing the ferromagnetic plate 5 are alternately arranged in the circumferential direction. The guide cylinder 4 has a mounting flange 4d coupled to the left end supported by a non-rotating portion of the vehicle body.
【０００３】可動の磁石支持筒１６を磁石６の配列ピツ
チ分だけ正逆回動するために、案内筒４の左端にアクチ
ユエータ２２ａが支持される。アクチユエータ２２ａは
シリンダ２３ａにピストンを嵌挿して両端に流体室を区
画され、ピストンに結合したロツドの外端部を腕を介し
て磁石支持筒１６に連結される。アクチユエータ２２ａ
の各流体室には加圧空気を導入する導管３４，３５が接
続され、図示してない空気槽から方向切換弁を経て導管
３４，３５の一方へ加圧空気が導入されると、ピストン
により磁石支持筒１６が正逆回動され、共通の強磁性板
５に対向する磁石６，７の極性が異なる非制動位置と、
磁石６，７の極性が同じ制動位置とに切り換わる。磁石
支持筒１６の制動位置で、回転する制動ドラム２が磁石
６，７からの磁界を横切る時、制動ドラム２に渦電流に
基づく制動力が発生する。渦電流は熱に変換されて外部
へ放散される。An actuator 22a is supported on the left end of the guide cylinder 4 to rotate the movable magnet support cylinder 16 forward and backward by the pitch of the arrangement of the magnets 6. The actuator 22a has a fluid chamber defined at both ends by inserting a piston into the cylinder 23a, and an outer end of a rod connected to the piston is connected to the magnet support cylinder 16 via an arm. Actuator 22a
The fluid chambers are connected to conduits 34 and 35 for introducing pressurized air. When pressurized air is introduced from an air tank (not shown) to one of the conduits 34 and 35 through a directional switching valve, the pistons are used. A non-braking position in which the magnet support cylinder 16 is rotated forward and reverse, and the polarities of the magnets 6 and 7 facing the common ferromagnetic plate 5 are different;
The polarity of the magnets 6 and 7 switches to the same braking position. When the rotating braking drum 2 crosses the magnetic field from the magnets 6 and 7 at the braking position of the magnet support cylinder 16, a braking force based on the eddy current is generated in the braking drum 2. The eddy current is converted to heat and dissipated outside.
【０００４】図９に示すように、鉄などの導体からなる
制動ドラム２は、外周面に放熱フイ２ｂを一体に形成さ
れ、右端部を取付フランジ１０から径外方へ延びる多数
のスポーク９に支持される。従来の制動ドラム２では放
熱フイン２ｂを肉厚の大なる制動ドラム２から切削加工
しているので、材質の選択が制限され、加工経費が嵩む
という問題がある。As shown in FIG. 9, a braking drum 2 made of a conductor such as iron has a heat radiation fin 2b integrally formed on an outer peripheral surface thereof, and has a right end formed by a number of spokes 9 extending radially outward from a mounting flange 10. Supported. In the conventional braking drum 2, since the heat radiation fin 2 b is cut from the thick braking drum 2, there is a problem that the selection of the material is restricted and the processing cost increases.
【０００５】特開平3-86062 号公報に開示されるよう
に、制動ドラムを渦電流が発生するドラム本体と、渦電
流による熱を除去する放熱部材とに分けて構成したもの
では、放熱部材がアルミニウムなどから鋳造されるもの
であるので、肉厚を薄くすることが難しく、肉厚を薄く
すると割れるなど強度の点に問題がある。[0005] As disclosed in Japanese Patent Application Laid-Open No. 3-86062, the brake drum is divided into a drum body that generates an eddy current and a heat radiating member that removes heat due to the eddy current. Since it is cast from aluminum or the like, it is difficult to reduce the thickness, and there is a problem in strength such as cracking when the thickness is reduced.
【０００６】上述したように、制動ドラム２の重要な機
能の１つは、渦電流減速装置の制動作用中に発生する熱
を空気中へ発散することである。このため、外周面に放
熱フイン２ｂを設け、制動ドラム２の熱を大気中へ放散
している。放熱フイン２ｂにより制動ドラム２を冷却す
る場合に、放熱フイン２ｂの形状は、（ａ）放熱効率が
高いこと。（ｂ）放熱フイン２ｂによる風切り音が大き
くないこと。（ｃ）燃費の悪化を防止するために、放熱
フイン２ｂによる空気抵抗が大きくないこと。……の３
つの設計条件を満す必要がある。As mentioned above, one of the important functions of the braking drum 2 is to dissipate the heat generated during the braking action of the eddy current reduction device into the air. For this reason, a radiation fin 2b is provided on the outer peripheral surface to dissipate the heat of the braking drum 2 to the atmosphere. When the braking drum 2 is cooled by the radiating fins 2b, the shape of the radiating fins 2b is such that (a) the radiating efficiency is high. (B) The wind noise caused by the heat radiation fin 2b is not loud. (C) In order to prevent deterioration of fuel efficiency, the air resistance due to the heat radiation fin 2b is not large. …… 3
It is necessary to satisfy two design conditions.
【０００７】[0007]
【発明が解決しようとする課題】本発明の課題は制動ド
ラムが上述の３つの要求を満し、かつ安価に製作可能な
放熱フインを備えた渦電流減速装置を提供することにあ
る。SUMMARY OF THE INVENTION It is an object of the present invention to provide an eddy current reduction device in which a braking drum satisfies the above three requirements and has a radiation fin which can be manufactured at low cost.
【０００８】[0008]
【課題を解決するための手段】上記課題を解決するため
に、本発明の構成は回転軸と一体に回転する制動ドラム
と、車両の非回転部分に前記制動ドラムの内周面に対向
して配設した磁石とからなる渦電流減速装置において、
帯状の薄板を波形に成形して放熱フインを形成し、該放
熱フインを前記制動ドラムの外周面に接合したことを特
徴とする。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a construction of the present invention comprises a braking drum which rotates integrally with a rotating shaft, and a non-rotating portion of a vehicle which faces an inner peripheral surface of the braking drum. In the eddy current reduction device comprising the magnets arranged,
A heat radiation fin is formed by shaping the strip-shaped thin plate into a waveform, and the heat radiation fin is joined to the outer peripheral surface of the braking drum.
【０００９】[0009]
【発明の実施の形態】本発明では制動ドラムを渦電流が
発生するドラム本体と、渦電流による熱を除去する放熱
部材とに分けて構成し、両者を結合する。放熱部材には
放熱性に優れた材質の帯状の薄板を用いて放熱フインを
波形に成形し、放熱フインがドラム本体の外周面を覆う
ように、放熱フインをドラム本体にろう付けにより接合
する。放熱フインを波形に形成し、放熱フインの表裏両
面に冷却風の通路を備えることにより、制動ドラムの放
熱性を高める。放熱フインは筒状に成形しなくてもよ
く、成形を簡単化するために周方向に分割された複数の
部品から構成することができる。DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, a braking drum is divided into a drum body for generating eddy currents and a heat radiating member for removing heat due to eddy currents, and the two are connected. The heat radiating fin is formed into a waveform by using a band-shaped thin plate made of a material having excellent heat radiating properties, and the heat radiating fin is joined to the drum main body by brazing so that the heat radiating fin covers the outer peripheral surface of the drum main body. By forming the heat radiation fins in a waveform and providing cooling air passages on both sides of the heat radiation fins, the heat radiation of the braking drum is enhanced. The heat dissipating fin does not have to be formed into a cylindrical shape, and can be composed of a plurality of parts divided in the circumferential direction to simplify the forming.
【００１０】[0010]
【実施例】図１は本発明に係る渦電流減速装置の正面断
面図である。制動ドラム２は右端部を、例えば車両変速
機の出力軸に結合される取付フランジ１０から径外方へ
延びる多数のスポーク９の先端に溶接などにより結合さ
れる。断面長方形の内空部４ｃを有する案内筒４は、外
筒部４ａが制動ドラム２の内周面２ａに対向するよう
に、車両の非回転部分に固定される。案内筒４の外筒部
４ａに多数の強磁性板５が周方向等間隔に備えられ、内
筒部４ｂに軸受１９により可動の磁石支持筒１７が回動
可能に支持される一方、磁石支持筒１７から延びる薄肉
円筒部１７ａに軸受１８により不動の磁石支持筒１６が
支持され、かつ図示してないボルトにより案内筒４の左
端壁に固定される。1 is a front sectional view of an eddy current reduction device according to the present invention. The brake drum 2 has its right end connected to, for example, the tip of a number of spokes 9 extending radially outward from a mounting flange 10 connected to the output shaft of the vehicle transmission. The guide cylinder 4 having an inner space 4c having a rectangular cross section is fixed to a non-rotating portion of the vehicle such that the outer cylinder 4a faces the inner peripheral surface 2a of the brake drum 2. A large number of ferromagnetic plates 5 are provided at equal intervals in the circumferential direction on an outer tube portion 4a of the guide tube 4, and a movable magnet support tube 17 is rotatably supported by a bearing 19 on an inner tube portion 4b. A stationary magnet support cylinder 16 is supported by a bearing 18 on a thin cylindrical portion 17a extending from the cylinder 17, and is fixed to the left end wall of the guide cylinder 4 by a bolt (not shown).
【００１１】薄肉円筒部１７ａから左方へ突出する腕２
０ａが、案内筒４の左端壁のスリツト１３ａを経て外部
へ突出され、かつ案内筒４と一体のアクチユエータ２２
ａから突出するロツド２１ａに連結される。アクチユエ
ータ２２ａはシリンダ２３ａにピストン２４ａを嵌挿し
てなり、ピストン２４ａに結合したロツド２１ａがシリ
ンダ２３ａから外部へ突出される。The arm 2 protruding leftward from the thin cylindrical portion 17a
Actuator 22 protrudes outside through slit 13a on the left end wall of guide tube 4 and is integral with guide tube 4.
is connected to a rod 21a protruding from a. The actuator 22a is formed by inserting a piston 24a into a cylinder 23a, and a rod 21a connected to the piston 24a protrudes from the cylinder 23a to the outside.
【００１２】図２，３に示すように、本発明は制動ドラ
ム２に対する放熱部材ないし放熱フイン２５の加工経費
を節減し、かつ放熱性能を高めるために、直円筒をなす
ドラム本体２Ａに、放熱フイン２５を形成した帯状の薄
板２９を巻き付けるか、帯状の薄板２９から形成した筒
体を嵌合するようにしたものである。つまり、ドラム本
体２Ａの外周面に、薄板２９を断面波形の放熱フイン２
５をプレス成形した筒体を嵌合し、放熱フイン２５の谷
部２８をろう付けなどによりドラム本体２Ａに接合した
ものである。放熱フイン２５の頂部２７にはスリツト２
６を設ける。As shown in FIGS. 2 and 3, the present invention is directed to a drum body 2A, which is a straight cylinder, in order to reduce the processing cost of a heat dissipating member or a heat dissipating fin 25 for the braking drum 2 and to enhance the heat dissipating performance. This is configured such that a band-shaped thin plate 29 having the fins 25 formed thereon is wound around or a cylindrical body formed from the band-shaped thin plate 29 is fitted. That is, the thin plate 29 is attached to the outer peripheral surface of the drum
5 is press-formed into a cylindrical body, and the valleys 28 of the heat radiation fins 25 are joined to the drum main body 2A by brazing or the like. A slit 2 is provided on the top 27 of the heat radiation fin 25.
6 is provided.
【００１３】実際に放熱フイン２５を作るには、図４に
示すように帯状の薄板２９に長手方向に所定の間隔を存
して、多数の幅方向に延びるスリツト２６をプレスによ
り打ち抜き、次いで薄板２９を図３に示すように波形に
成形する。最後に薄板２９を湾曲して筒体に成形し、該
筒体をドラム本体２Ａに嵌合し、放熱フイン２５の谷部
２８をドラム本体２Ａの外周面にろう付けする。To actually produce the heat radiation fin 25, as shown in FIG. 4, a number of slits 26 extending in the width direction are punched out by a press at predetermined intervals in the longitudinal direction on a strip-like thin plate 29, and then the thin plate is thinned. 29 is formed into a waveform as shown in FIG. Finally, the thin plate 29 is curved and formed into a cylindrical body, which is fitted to the drum main body 2A, and the valleys 28 of the heat radiation fin 25 are brazed to the outer peripheral surface of the drum main body 2A.
【００１４】車両の走行中に、制動ドラム２の外周側を
軸方向に流れる空気の一部は、図２に矢印ａで示すよう
に、放熱フイン２５の谷部２８に沿つて流れ、空気の残
部は矢印ｂで示すように、頂部２７の内側を流れ、途中
で一部がスリツト２６から外側へ流れ出る。During traveling of the vehicle, part of the air flowing in the axial direction on the outer peripheral side of the braking drum 2 flows along the valley 28 of the heat radiation fin 25 as shown by an arrow a in FIG. The remaining part flows inside the top part 27 as shown by the arrow b, and partly flows out of the slit 26 on the way.
【００１５】以上の実施例は、案内筒４の内部に不動の
磁石支持筒１６と可動の磁石支持筒１７を配設し、可動
の磁石支持筒１７を正逆回動させて制動位置と非制動位
置とに切り換える形式の渦電流減速装置の場合について
説明したが、本発明はこれに限定されるものではなく、
図５に示すように、案内筒４の内部に、強磁性板５に対
する磁石７の極性が周方向に交互に異なるように結合す
る１つの磁石支持筒１７を回動可能に支持し、磁石支持
筒１７を正逆回動させて各磁石７が各強磁性板５に全面
的に対向する制動位置と、極性が異なる１対の磁石７が
共通の強磁性板５に部分的に対向する非制動位置（図示
の状態）とに切り換える形式の渦電流減速装置にも適用
できる。In the above embodiment, an immovable magnet support tube 16 and a movable magnet support tube 17 are disposed inside the guide tube 4, and the movable magnet support tube 17 is rotated forward and reverse to disengage from the braking position. Although the case of the eddy current reduction device of the type switching to the braking position has been described, the present invention is not limited to this,
As shown in FIG. 5, inside the guide cylinder 4, one magnet support cylinder 17 that couples the magnets 7 to the ferromagnetic plate 5 so that the polarities thereof are alternately different in the circumferential direction is rotatably supported. By rotating the cylinder 17 forward and backward, a braking position in which each magnet 7 entirely faces each ferromagnetic plate 5 and a non-braking position in which a pair of magnets 7 having different polarities partially face the common ferromagnetic plate 5. The present invention can also be applied to an eddy current reduction device of a type that switches to a braking position (the state shown).
【００１６】また、図６に示すように、案内筒４の内部
に、強磁性板５に対する磁石７の極性が周方向に２つず
つ異なるように結合する１つの磁石支持筒１７を回動可
能に支持し、磁石支持筒１７を正逆回動させて共通の強
磁性板５に対向する２つの磁石７の極性が同じの制動位
置（図示の状態）と、共通の強磁性板５に対向する２つ
の磁石７の極性が互いに異なる非制動位置とに切り換え
る形式の渦電流減速装置にも適用できる。Further, as shown in FIG. 6, one magnet support cylinder 17 is connected to the inside of the guide cylinder 4 so that the polarity of the magnet 7 with respect to the ferromagnetic plate 5 is different by two in the circumferential direction. And the magnet support cylinder 17 is rotated forward and reverse so that the two magnets 7 facing the common ferromagnetic plate 5 have the same braking position (the state shown) and the magnet 7 facing the common ferromagnetic plate 5. The present invention is also applicable to an eddy current reduction device of a type in which the two magnets 7 are switched to a non-braking position in which the polarities of the two magnets 7 are different from each other.
【００１７】また、図７に示すように、案内筒４の内部
に、強磁性板５に対する磁石７の極性が周方向に交互に
異なるように結合する１つの磁石支持筒１７を軸方向移
動可能に支持し、磁石支持筒１７を制動ドラム２の内部
へ突出させて各磁石７が各強磁性板５に全面的に対向す
る制動位置（図示の状態）と、磁石支持筒１７を制動ド
ラム２から引退させて各磁石７が各強磁性板５に対向し
ない非制動位置とに切り換える形式の渦電流減速装置に
も適用できる。As shown in FIG. 7, one magnet support cylinder 17 which is coupled inside the guide cylinder 4 so that the polarity of the magnet 7 with respect to the ferromagnetic plate 5 is alternately different in the circumferential direction can be moved in the axial direction. The magnet support cylinder 17 is protruded into the inside of the brake drum 2 so that each magnet 7 is completely opposed to each ferromagnetic plate 5 in the braking position (shown), and the magnet support cylinder 17 is moved to the brake drum 2. The present invention can also be applied to an eddy current reduction device of a type in which each magnet 7 is retired and switched to a non-braking position where each magnet 7 does not face each ferromagnetic plate 5.
【００１８】さらに、本発明は永久磁石式渦電流減速装
置に限らず、電磁石式渦電流減速装置の制動ドラムにも
適用できる。Further, the present invention can be applied not only to the permanent magnet type eddy current reduction device but also to a braking drum of an electromagnet type eddy current reduction device.
【００１９】[0019]
【発明の効果】本発明は上述のように、回転軸と一体に
回転する制動ドラムと、車両の非回転部分に前記制動ド
ラムの内周面に対向して配設した磁石とからなる渦電流
減速装置において、帯状の薄板を波形に成形して放熱フ
インを形成し、該放熱フインを前記制動ドラムの外周面
に接合したものであるから、次のような効果を奏する。 （ａ）放熱フインを制動ドラムに切削する従来例に比べ
て、放熱性に優れた制動ドラムを安価に製造できる。As described above, the present invention provides an eddy current comprising a braking drum which rotates integrally with a rotating shaft and a magnet which is disposed on a non-rotating portion of a vehicle so as to face the inner peripheral surface of the braking drum. In the reduction gear transmission, the heat radiation fin is formed by shaping the band-shaped thin plate into a waveform, and the heat radiation fin is joined to the outer peripheral surface of the braking drum. (A) Compared with a conventional example in which a heat radiation fin is cut into a braking drum, a braking drum excellent in heat radiation can be manufactured at low cost.
【００２０】（ｂ）帯状の薄板から放熱フインをプレス
成形するだけであるので、放熱フインの形状を放熱性を
高め、風切り音、空気抵抗を小さくする最適なものに設
計でき、加工経費の節減、軽量化に役立つ。(B) Since the radiating fins are simply formed by pressing the fins from the belt-shaped thin plate, the radiating fins can be designed to have an optimal shape for enhancing heat radiation and reducing wind noise and air resistance, thereby reducing processing costs. Helps to reduce weight.
【００２１】（ｃ）ドラム本体に磁気効率の高い材料を
選択し、放熱フインには例えば銅、アルミニウムなどの
放熱性に優れた材料を選択して制動ドラムを複合化する
ことにより、渦電流減速装置の性能を大幅に向上でき
る。(C) Eddy current deceleration is achieved by selecting a material having high magnetic efficiency for the drum body and selecting a material having excellent heat dissipation properties such as copper and aluminum for the heat dissipation fin and combining the braking drum. The performance of the device can be greatly improved.
【図１】本発明に係る渦電流減速装置の正面断面図であ
る。FIG. 1 is a front sectional view of an eddy current reduction device according to the present invention.
【図２】同渦電流減速装置の制動ドラムにおける放熱フ
インを形成した薄板の一部を示す斜視図である。FIG. 2 is a perspective view showing a part of a thin plate on which a radiation fin is formed in a braking drum of the eddy current reduction device.
【図３】同渦電流減速装置の制動ドラムにおける放熱フ
インを形成した薄板の一部を示す斜視図である。FIG. 3 is a perspective view showing a part of a thin plate on which a radiation fin is formed in a braking drum of the eddy current reduction device.
【図４】本発明が適用される他の形式の渦電流減速装置
を示す側面断面図である。FIG. 4 is a side sectional view showing another type of eddy current reduction device to which the present invention is applied.
【図５】本発明が適用される他の形式の渦電流減速装置
を示す側面断面図である。FIG. 5 is a side sectional view showing another type of eddy current reduction device to which the present invention is applied.
【図６】本発明が適用される他の形式の渦電流減速装置
を示す正面断面図である。FIG. 6 is a front sectional view showing another type of eddy current reduction device to which the present invention is applied.
【図７】従来の渦電流減速装置の制動ドラムの斜視図で
ある。FIG. 7 is a perspective view of a braking drum of a conventional eddy current reduction device.
【図８】従来の渦電流減速装置の制動ドラムの斜視図で
ある。FIG. 8 is a perspective view of a braking drum of a conventional eddy current reduction device.
２Ａ：ドラム本体 ２：制動ドラム ２ａ：内周面 ２
ｂ：放熱フイン ４：案内筒 ４ａ：外筒部 ４ｂ：内
筒部 ４ｃ：内空部 ４ｄ：取付フランジ ５：強磁性
板 ６，７：磁石 ９：スポーク １０：取付フランジ
１６，１７：磁石支持筒 ２０ａ：腕 ２１ａ：ロツ
ド ２２ａ：アクチユエータ ２３ａ：シリンダ ２４
ａ：ピストン ２５：放熱フイン ２６：スリツト ２
７：頂部 ２８：谷部 ２９：薄板2A: drum main body 2: braking drum 2a: inner peripheral surface 2
b: heat radiation fin 4: guide cylinder 4a: outer cylinder 4b: inner cylinder 4c: inner cavity 4d: mounting flange 5: ferromagnetic plate 6, 7: magnet 9: spoke 10: mounting flange 16, 17: magnet support Tube 20a: Arm 21a: Rod 22a: Actuator 23a: Cylinder 24
a: Piston 25: Heat radiation fin 26: Slit 2
7: Top 28: Valley 29: Thin plate
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成１０年１１月２５日（１９９８．１１．
２５）[Submission date] November 25, 1998 (1998.11.
25)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図面の簡単な説明[Correction target item name] Brief description of drawings
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明に係る渦電流減速装置の正面断面図であ
る。FIG. 1 is a front sectional view of an eddy current reduction device according to the present invention.
【図２】同渦電流減速装置の制動ドラムにおける放熱フ
インを形成した薄板の一部を示す斜視図である。FIG. 2 is a perspective view showing a part of a thin plate on which a radiation fin is formed in a braking drum of the eddy current reduction device.
【図３】同渦電流減速装置の制動ドラムにおける放熱フ
インを形成した薄板の一部を示す側面断面図である。FIG. 3 is a side sectional view showing a part of a thin plate on which a radiation fin is formed in a braking drum of the eddy current reduction device.
【図４】同渦電流減速装置の制動ドラムにおける放熱フ
インを形成した薄板の一部を示す平面図である。FIG. 4 is a plan view showing a part of a thin plate on which a radiation fin is formed in a braking drum of the eddy current reduction device.
【図５】本発明が適用される他の形式の渦電流減速装置
を示す側面断面図である。FIG. 5 is a side sectional view showing another type of eddy current reduction device to which the present invention is applied.
【図６】本発明が適用される他の形式の渦電流減速装置
を示す側面断面図である。FIG. 6 is a side sectional view showing another type of eddy current reduction device to which the present invention is applied.
【図７】本発明が適用される他の形式の渦電流減速装置
を示す正面断面図である。FIG. 7 is a front sectional view showing another type of eddy current reduction device to which the present invention is applied.
【図８】従来の渦電流減速装置の案内筒と磁石支持筒の
斜視図である。FIG. 8 is a perspective view of a guide tube and a magnet support tube of a conventional eddy current reduction device.
【図９】従来の渦電流減速装置の制動ドラムの斜視図で
ある。FIG. 9 is a perspective view of a braking drum of a conventional eddy current reduction device.
【符号の説明】 ２Ａ：ドラム本体 ２：制動ドラム ２ａ：内周面 ２
ｂ：放熱フイン ４：案内筒 ４ａ：外筒部 ４ｂ：内
筒部 ４ｃ：内空部 ４ｄ：取付フランジ ５：強磁性
板 ６，７：磁石 ９：スポーク １０：取付フランジ
１６，１７：磁石支持筒 ２０ａ：腕 ２１ａ：ロツ
ド ２２ａ：アクチユエータ ２３ａ：シリンダ ２４
ａ：ピストン ２５：放熱フイン ２６：スリツト ２
７：頂部 ２８：谷部 ２９：薄板[Description of Signs] 2A: Drum main body 2: Brake drum 2a: Inner peripheral surface 2
b: heat radiation fin 4: guide cylinder 4a: outer cylinder 4b: inner cylinder 4c: inner cavity 4d: mounting flange 5: ferromagnetic plate 6, 7: magnet 9: spoke 10: mounting flange 16, 17: magnet support Tube 20a: Arm 21a: Rod 22a: Actuator 23a: Cylinder 24
a: Piston 25: Heat radiation fin 26: Slit 2
7: Top 28: Valley 29: Thin plate
Claims (2)
両の非回転部分に前記制動ドラムの内周面に対向して配
設した磁石とからなる渦電流減速装置において、帯状の
薄板を波形に成形して放熱フインを形成し、該放熱フイ
ンを前記制動ドラムの外周面に接合したことを特徴とす
る渦電流減速装置。An eddy current reduction device comprising a braking drum which rotates integrally with a rotating shaft and a magnet disposed on a non-rotating portion of a vehicle so as to face an inner peripheral surface of the braking drum. An eddy current reduction device characterized in that a radiation fin is formed by shaping into a waveform, and the radiation fin is joined to an outer peripheral surface of the braking drum.
れている、請求項１に記載の渦電流減速装置。2. The eddy current reduction device according to claim 1, wherein a slit is provided at a top of said heat radiation fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10251867A JP2000069740A (en) | 1998-08-23 | 1998-08-23 | Eddy current reduction gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10251867A JP2000069740A (en) | 1998-08-23 | 1998-08-23 | Eddy current reduction gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000069740A true JP2000069740A (en) | 2000-03-03 |
Family
ID=17229118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10251867A Pending JP2000069740A (en) | 1998-08-23 | 1998-08-23 | Eddy current reduction gear |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000069740A (en) |
-
1998
- 1998-08-23 JP JP10251867A patent/JP2000069740A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3444324B2 (en) | Permanent magnet type eddy current reducer | |
| US6039157A (en) | Eddy current braking system | |
| EP0762620A1 (en) | Guide frame for eddy current type reduction device | |
| JP2000069740A (en) | Eddy current reduction gear | |
| JP3769964B2 (en) | Eddy current reducer | |
| JP2000069739A (en) | Eddy current reduction gear | |
| JP4715546B2 (en) | Eddy current reducer | |
| JP7343818B2 (en) | Eddy current reduction gear | |
| JP2000102240A (en) | Eddy current decelerator | |
| JP2002354781A (en) | Eddy current speed reducing apparatus | |
| JPH0974736A (en) | Damping drum of eddy current type decelerating device | |
| JPH10127040A (en) | Eddy current reducing device | |
| JPH10127039A (en) | Permanent magnet eddy current speed reducer | |
| JP3627432B2 (en) | Eddy current reducer | |
| JP2000287435A (en) | Eddy-current decelerator | |
| JP3820793B2 (en) | Eddy current reducer | |
| JP3285043B2 (en) | Eddy current type reduction gear | |
| JP3823827B2 (en) | Eddy current reducer | |
| JP2001037202A (en) | Eddy current decelerating device | |
| JP2001037203A (en) | Decelerating device utilizing eddy current | |
| JP2631418B2 (en) | Eddy current type reduction gear | |
| JPH10248236A (en) | Eddy current method reduction gear | |
| JPH114572A (en) | Permanent magnet eddy current decelerator | |
| JP3704877B2 (en) | Braking drum support structure for eddy current type speed reducer | |
| JP2572518Y2 (en) | Eddy current type reduction gear |