WO2012086060A1 - Electromagnetic brake device for elevator - Google Patents
Electromagnetic brake device for elevator Download PDFInfo
- Publication number
- WO2012086060A1 WO2012086060A1 PCT/JP2010/073353 JP2010073353W WO2012086060A1 WO 2012086060 A1 WO2012086060 A1 WO 2012086060A1 JP 2010073353 W JP2010073353 W JP 2010073353W WO 2012086060 A1 WO2012086060 A1 WO 2012086060A1
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- WIPO (PCT)
- Prior art keywords
- piece
- movable iron
- elastic body
- iron piece
- pressing force
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/30—Operating devices electrical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
- B66B11/08—Driving gear ; Details thereof, e.g. seals with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/12—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect
- B66D5/14—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect embodying discs
Definitions
- This invention relates to an electromagnetic brake device provided in an elevator hoisting machine.
- Patent Document 1 listed below discloses an electromagnetic brake device provided in an elevator hoisting machine.
- the rotary body linked with a drive sheave is provided in the winding machine.
- the electromagnetic brake device presses the braking piece against the rotating body with the force of a spring to generate a force for holding the car stationary (hereinafter also simply referred to as “stationary holding force”).
- stationary holding force On the other hand, at the time of raising and lowering the car, the electromagnetic brake device generates an attractive force against the spring force from the electromagnet and separates the braking piece from the rotating body.
- Patent Document 2 discloses a technique for reducing the collision noise when the electromagnetic brake device operates. Specifically, the one described in Patent Document 2 generates the stationary holding force. Two springs are used. Then, when generating the stationary holding force, the spring having the larger pressing force is first acted to press the braking piece against the rotating body.
- the present invention has been made to solve the above-described problems, and an object thereof is to provide an electromagnetic brake device for an elevator that can greatly reduce noise when a braking piece collides with a rotating body. That is.
- An electromagnetic brake device for an elevator is an electromagnetic brake device for an elevator that holds an elevator car stationary by pressing a braking piece against a rotating body that rotates in conjunction with a drive sheave of the elevator hoisting machine.
- a first movable iron piece provided with a braking piece and arranged so that the braking piece faces the rotating body, a second movable iron piece arranged on the opposite side of the braking piece with respect to the first movable iron piece, and a first
- a first elastic body having a predetermined pressing force provided between the movable iron piece and the second movable iron piece, and a predetermined pressing force stronger than the pressing force of the first elastic body
- the second movable iron piece is A second elastic body pressed against the movable iron piece side, the second movable iron piece is sucked against the pressing force of the second elastic body, and the first movable iron piece is moved against the pressing force of the first elastic body.
- an electromagnet to be attracted to
- the elevator electromagnetic brake device can greatly reduce noise when the braking piece collides with the rotating body.
- FIG. 3 is a diagram showing an AA arrow view of FIG. 2. It is the C section enlarged view of FIG. It is a figure for demonstrating operation
- FIG. 1 is a diagram showing an overall configuration of an elevator.
- 1 is an elevator hoistway
- 2 is an elevator car
- 3 is a counterweight.
- the car 2 and the counterweight 3 are suspended in a fishing bottle type in the hoistway 1 by the main rope 4.
- a thin hoisting machine 5 is provided in the upper space in the hoistway 1.
- the hoisting machine 5 constitutes a driving device that drives the car 2.
- the hoisting machine 5 is provided with a driving sheave 6 so as to be rotatable in both directions.
- a part of the main rope 4 is wound around a driving sheave 6.
- the car 2 moves up and down in the hoistway 1 in a direction corresponding to the moving direction of the main rope 4 when the main rope 4 moves in the longitudinal direction in conjunction with the rotation of the driving sheave 6.
- 7 is a guide rail for guiding the raising and lowering of the car 2
- 8 is a speed governor for detecting a predetermined overspeed state.
- FIG. 2 is a rear view showing a hoisting machine provided with an elevator electromagnetic brake device according to Embodiment 1 of the present invention
- FIG. 3 is a view taken along the line AA in FIG. 2
- FIG. 4 is a section C in FIG. It is an enlarged view.
- FIG. 2 shows a view taken along the line BB in FIG.
- Numeral 11 is a frame that is a casing of the hoisting machine 5.
- the drive sheave 6 is rotatably provided on the frame 11 via a bearing.
- a rotating body 12 is provided integrally with the drive sheave 6. The rotating body 12 rotates in conjunction with the drive sheave 6.
- a part of the rotator 12 is formed with a cylindrical part 13 having a short (width) cylindrical shape.
- the tubular portion 13 has the same rotation axis as that of the driving sheave 6 and is disposed inside the frame 11.
- the cylindrical portion 13 is supported by the frame 11 via other portions of the rotating body 12.
- the cylindrical portion 13 is provided with a rotor core 14 on the outer peripheral surface 13a.
- Reference numeral 15 denotes a stator that constitutes a main part of the electric motor.
- the stator 15 is provided on the inner peripheral surface of the frame 11 so as to face the rotor core 14.
- the electromagnetic brake device 10 generates a force for holding the car 2 stationary by pressing the braking piece 16 against the rotating body 12. Further, when the car 2 is raised and lowered, the electromagnetic brake device 10 releases the braking force 16 from the rotating body 12 to release the stationary holding force.
- the electromagnetic brake device 10 is arranged on both sides of the rotating body 12. In such a case, the electromagnetic brake device 10 blocks the rotation of the rotating body 12 by pressing the braking piece 16 against the outer peripheral surface 13a of the cylindrical portion 13 from the side.
- the outer peripheral surface 13a of the cylindrical portion 13 functions as a braking surface for generating the static holding force.
- the operation direction of the electromagnetic brake device 10, that is, the direction that operates when the braking piece 16 contacts and separates from the rotating body 12 (braking surface) is the horizontal direction.
- the electromagnetic brake device 10 includes a brake piece 16, a field 17, a coil 18, a movable piece (iron piece) 19, a spring (elastic body) 20, a movable piece (iron piece) 21, and an elastic body 22.
- the field 17 and the coil 18 constitute an electromagnet. That is, when a voltage is applied to the coil 18, an electromagnetic force is generated in the field 17.
- the frame 11 has openings 11a on both sides thereof.
- the field 17 is applied to the frame 11 so as to cover the opening 11 a from the outside, and is attached to the frame 11 by a bolt 23. Further, the coil 18 is provided in the field 17 so that its axis is directed in the operation direction.
- the movable piece 19 is supported by the field 17 so as to be movable in the operation direction within a predetermined range.
- the movable piece 19 is disposed on the rotating body 12 side of the field 17 so that one side surface thereof faces the field 17. That is, the movable piece 19 is attached to the field 17 so as to approach and separate from the rotating body 12.
- the spring 20 is for pressing the movable piece 19 with a predetermined pressing force in a direction in which the movable piece 19 moves away from the field 17 among the above operating directions.
- the movable piece 19 is constantly pushed toward the rotating body 12 by the spring 20.
- the spring 20 is provided in the field 17, and the tip portion thereof is connected to the one side surface of the movable piece 19.
- the movable piece 21 is supported by the movable piece 19 so as to be movable in the operation direction within a predetermined range.
- the movable piece 21 is arranged on the rotating body 12 side of the movable piece 19 so that one side surface thereof faces the other side surface of the movable piece 19.
- the braking piece 16 is provided on the other side surface of the movable piece 21 (a surface facing the opposite side of the one side surface), and is disposed so as to face the outer peripheral surface 13 a of the cylindrical portion 13. That is, the movable piece 19 is disposed on the opposite side of the brake piece 16 with respect to the movable piece 21, and the brake piece 16, the movable piece 21, the movable piece 19, and the electromagnet (field 17) are arranged outside the rotating body 12. And arranged in series in the operation direction.
- the elastic body 22 is provided between the other side surface of the movable piece 19 and one side surface of the movable piece 21.
- the elastic body 22 is made of a member such as rubber or a spring, and is provided so as to expand and contract in the operation direction, like the spring 20.
- the elastic body 22 has a predetermined pressing force that is weaker than the pressing force of the spring 20.
- the elastic body 22 exerts a force in the operation direction so that the movable piece 19 and the movable piece 21 are separated from each other by the pressing force.
- the spring 20 presses the movable piece 19 toward the movable piece 21 with a predetermined pressing force stronger than the pressing force of the elastic body 22.
- the movable piece 19 is made of, for example, a member having a U-shaped cross section that opens to the rotating body 12 side. That is, the movable piece 19 is formed with a recess on the other side facing the movable piece 21.
- the elastic body 22 contracts, the movable piece 21 is configured so as to be entirely accommodated in the concave portion of the movable piece 19.
- FIGS. 5 to 7 are diagrams for explaining the operation of the elevator electromagnetic brake device according to the first embodiment of the present invention.
- FIG. 5 shows a state of the electromagnetic brake device 10 when the car 2 is traveling in the hoistway 1.
- a predetermined voltage is applied to the coil 18.
- an electromagnetic attractive force Fm1 is generated between the field 17 and the movable piece 19, and the field 17 attracts the movable piece 19 against the pressing force Fk1 of the spring 20. That is, the electromagnetic attraction force Fm1 is set to a predetermined magnitude that can overcome the pressing force Fk1 of the spring 20.
- a predetermined electromagnetic attractive force Fm2 is also generated between the movable piece 19 and the movable piece 21.
- the electromagnetic attractive force Fm2 is weaker than the electromagnetic attractive force Fm1, but is set to a predetermined magnitude that can overcome the pressing force Fk2 ( ⁇ Fk1) of the elastic body 22. For this reason, the movable piece 19 sucks the movable piece 21 against the pressing force Fk ⁇ b> 2 of the elastic body 22.
- the movable piece 19 is pulled toward the field 17 until, for example, one side surface thereof contacts the field 17.
- the spring 20 may be assembled so as to fit inside the field 17.
- the movable piece 21 approaches the movable piece 19 and is disposed in the concave portion of the movable piece 19.
- a predetermined gap is formed between the braking piece 16 and the outer peripheral surface 13a of the cylindrical portion 13, and the car 2 can be moved up and down.
- a braking command is output from a predetermined control device (not shown).
- the electromagnetic brake device 10 performs a predetermined process for deactivating the voltage of the coil 18 when the braking command is input. As a result, the current flowing through the coil 18 gradually decreases, and the electromagnetic attractive forces Fm1 and Fm2 gradually decrease.
- the electromagnetic attractive force Fm2 becomes smaller than the pressing force Fk2 of the elastic body 22. Then, the movable piece 21 moves to the rotating body 12 side by the pressing force Fk2 of the elastic body 22, and the braking piece 16 collides with the outer peripheral surface 13a of the cylindrical portion 13. Since the movable piece 19 is disposed at a position close to the field 17, the electromagnetic attractive force Fm1 is larger than the electromagnetic attractive force Fm2. For this reason, even when the current value of the coil 18 decreases to I1, the electromagnetic attractive force Fm1 is larger than the pressing force Fk1 of the spring 20, and the movable piece 19 remains in close contact with the field 17.
- FIG. 6 shows a state when the current value of the coil 18 is reduced to I1.
- the elastic body 22 has a predetermined elongation amount that allows the braking piece 16 to contact the rotating body 12 with the movable piece 19 in close contact with the field 17.
- FIG. 7 shows a state when the current value of the coil 18 is reduced to I2.
- car 2 stopping at the landing 9 can be reduced. That is, in the electromagnetic brake device 10, when a braking command is output from the control device, first, the movable piece 21 moves to the rotating body 12 side, and the braking piece 16 collides with the cylindrical portion 13. At this time, since the spring 20 having a large pressing force remains compressed, only a small pressing force of the elastic body 22 acts on the braking piece 16. That is, the energy when the braking piece 16 collides with the rotating body 12 can be kept small, and the noise at this time can be greatly reduced.
- the electromagnetic brake device 10 after bringing the braking piece 16 into contact with the outer peripheral surface 13 a of the cylindrical portion 13, the braking piece 16 is pressed against the rotating body 12 by the large pressing force of the spring 20. For this reason, it is possible to generate a stable stationary holding force while preventing the noise.
- the elastic body 22 can absorb the impact caused by the movement of the movable piece 19, and a new cushioning material or the like can be obtained. Without the provision, it is possible to reduce the collision sound of the movable piece 19.
- positioning of the hoisting machine 5 are not limited to this.
- the arrangement and operation direction of the electromagnetic brake device 10 are not limited to the above description.
- the electromagnetic brake device 10 may be disposed inside the rotating body 12, or the operation direction of the electromagnetic brake device 10 may be set in the axial direction of the rotating body 12. Even with such a configuration, it is possible to achieve the same effects as described above.
- the electromagnetic brake device according to the present invention can be applied to those installed in an elevator hoisting machine.
Abstract
Description
特許文献1に記載のものでは、巻上機に、駆動綱車に連動する回転体が設けられている。電磁ブレーキ装置は、制動片をばねの力によって上記回転体に押し付け、かごを静止保持するための力(以下、単に「静止保持力」ともいう)を発生させている。一方、かごの昇降時、電磁ブレーキ装置では、上記ばねの力に抗する吸引力を電磁石から発生させ、制動片を回転体から離隔させている。
In the thing of
具体的に、特許文献2に記載のものでは、上記静止保持力を発生させるために、2つのばねが用いられている。そして、静止保持力を発生させる場合は、押付力が大きい方のばねを最初に作用させて、制動片を回転体に押し付けている。 The following
図1はエレベーターの全体構成を示す図である。
図1において、1はエレベーターの昇降路、2はエレベーターのかご、3はつり合いおもりである。かご2及びつり合いおもり3は、主索4により、昇降路1内で釣瓶式に懸架されている。
FIG. 1 is a diagram showing an overall configuration of an elevator.
In FIG. 1, 1 is an elevator hoistway, 2 is an elevator car, and 3 is a counterweight. The
なお、図中、7はかご2の昇降を案内するためのガイドレール、8は所定の過速状態を検出するための調速機である。 A
In the figure, 7 is a guide rail for guiding the raising and lowering of the
以下に、図2乃至図4も参照し、巻上機5と、この巻上機5に設けられた電磁ブレーキ装置10との各構成について具体的に説明する。 When the
Below, with reference to FIG. 2 thru | or FIG. 4, each structure of the
15は電動機の要部を構成する固定子である。固定子15は、回転子鉄心14に対向するように、フレーム11の内周面に設けられている。 A part of the
これにより、制動片16と筒状部13の外周面13aとの間には所定の間隙が形成され、かご2が昇降可能な状態となる。 At this time, the
As a result, a predetermined gap is formed between the
図7はコイル18の電流値がI2まで減少した時の状態を示している。 When time further elapses from the state of FIG. 6 and the current flowing through the
FIG. 7 shows a state when the current value of the
即ち、上記電磁ブレーキ装置10では、制御機器から制動指令が出力されると、先ず、可動片21が回転体12側に移動して、制動片16が筒状部13に衝突する。この時、押付力の大きなばね20は圧縮されたままであるため、制動片16には、弾性体22の小さな押付力のみが作用する。即ち、制動片16が回転体12に衝突する時のエネルギーを小さく抑えることができ、この時の騒音を大幅に低減させることができる。 If it is the
That is, in the
2 かご
3 つり合いおもり
4 主索
5 巻上機
6 駆動綱車
7 ガイドレール
8 調速機
9 乗場
10 電磁ブレーキ装置
11 フレーム
11a 開口
12 回転体
13 筒状部
13a 外周面
14 回転子鉄心
15 固定子
16 制動片
17 フィールド
18 コイル
19、21 可動片
20 ばね
22 弾性体
23 ボルト DESCRIPTION OF
Claims (4)
- エレベーター巻上機の駆動綱車に連動して回転する回転体に制動片を押し付けることにより、エレベーターのかごを静止保持するエレベーター用電磁ブレーキ装置であって、
前記制動片が設けられ、前記制動片が前記回転体に対向するように配置された第1可動鉄片と、
前記第1可動鉄片に対し、前記制動片の反対側に配置された第2可動鉄片と、
前記第1可動鉄片及び前記第2可動鉄片の間に設けられた、所定の押付力を有する第1弾性体と、
前記第1弾性体が有する押付力よりも強い所定の押付力で、前記第2可動鉄片を前記第1可動鉄片側に押し付ける第2弾性体と、
前記第2弾性体の押付力に抗して前記第2可動鉄片を吸引し、前記第1弾性体の押付力に抗して前記第1可動鉄片を前記第2可動鉄片に吸引させる電磁石と、
を備えたエレベーター用電磁ブレーキ装置。 An electromagnetic brake device for an elevator that holds an elevator car stationary by pressing a braking piece against a rotating body that rotates in conjunction with a driving sheave of the elevator hoisting machine,
A first movable iron piece provided with the braking piece, and arranged so that the braking piece faces the rotating body;
A second movable iron piece disposed on the opposite side of the braking piece with respect to the first movable iron piece;
A first elastic body having a predetermined pressing force provided between the first movable iron piece and the second movable iron piece;
A second elastic body that presses the second movable iron piece against the first movable iron piece with a predetermined pressing force stronger than the pressing force of the first elastic body;
An electromagnet that attracts the second movable iron piece against the pressing force of the second elastic body, and attracts the first movable iron piece to the second movable iron piece against the pressing force of the first elastic body;
Electromagnetic brake device for elevator equipped with - 前記第1可動鉄片、前記第2可動鉄片、前記電磁石は、前記制動片が前記回転体に対して接触及び離隔する時の動作方向に、直列に配置され、
前記第1弾性体及び前記第2弾性体は、前記動作方向に伸縮するように配置された
請求項1に記載のエレベーター用電磁ブレーキ装置。 The first movable iron piece, the second movable iron piece, and the electromagnet are arranged in series in an operation direction when the braking piece contacts and separates from the rotating body,
The elevator electromagnetic brake device according to claim 1, wherein the first elastic body and the second elastic body are arranged so as to expand and contract in the operation direction. - 前記電磁石を構成するコイルの電圧が消勢されると、前記第1可動鉄片が前記第1弾性体の押付力によって移動することにより、前記制動片が前記回転体に接触し、その後、前記第2可動鉄片が前記第2弾性体の押付力によって移動することにより、前記第2弾性体の押付力が前記制動片に作用する請求項1又は請求項2に記載のエレベーター用電磁ブレーキ装置。 When the voltage of the coil constituting the electromagnet is de-energized, the first movable iron piece moves by the pressing force of the first elastic body, so that the braking piece comes into contact with the rotating body, and then the first 3. The elevator electromagnetic brake device according to claim 1, wherein when the two movable iron pieces are moved by the pressing force of the second elastic body, the pressing force of the second elastic body acts on the braking piece.
- 前記第2可動鉄片は、前記第1可動鉄片に対向する面に凹部が形成され、
前記第1可動鉄片は、前記電磁石によって第2可動鉄片に吸引されると、前記凹部内に配置される
請求項1又は請求項2に記載のエレベーター用電磁ブレーキ装置。 The second movable iron piece has a recess formed on a surface facing the first movable iron piece,
3. The elevator electromagnetic brake device according to claim 1, wherein when the first movable iron piece is attracted to the second movable iron piece by the electromagnet, the first movable iron piece is disposed in the recess.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020137018795A KR101482480B1 (en) | 2010-12-24 | 2010-12-24 | Electromagnetic brake device for elevator |
PCT/JP2010/073353 WO2012086060A1 (en) | 2010-12-24 | 2010-12-24 | Electromagnetic brake device for elevator |
CN201080070855.1A CN103261079B (en) | 2010-12-24 | 2010-12-24 | Electromagnetic brake device for elevator |
EP10861051.0A EP2657173B1 (en) | 2010-12-24 | 2010-12-24 | Electromagnetic brake device for elevator |
JP2012549548A JP5494826B2 (en) | 2010-12-24 | 2010-12-24 | Electromagnetic brake device for elevator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2010/073353 WO2012086060A1 (en) | 2010-12-24 | 2010-12-24 | Electromagnetic brake device for elevator |
Publications (1)
Publication Number | Publication Date |
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WO2012086060A1 true WO2012086060A1 (en) | 2012-06-28 |
Family
ID=46313359
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2010/073353 WO2012086060A1 (en) | 2010-12-24 | 2010-12-24 | Electromagnetic brake device for elevator |
Country Status (5)
Country | Link |
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EP (1) | EP2657173B1 (en) |
JP (1) | JP5494826B2 (en) |
KR (1) | KR101482480B1 (en) |
CN (1) | CN103261079B (en) |
WO (1) | WO2012086060A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2020183643A1 (en) * | 2019-03-13 | 2020-09-17 | 三菱電機株式会社 | Elevator hoisting machine brake and hoisting machine |
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CN103489714B (en) * | 2013-09-25 | 2015-12-09 | 中国科学院深圳先进技术研究院 | A kind of locking device |
WO2015136663A1 (en) * | 2014-03-13 | 2015-09-17 | 三菱電機株式会社 | Elevator and hoisting device brake for elevators |
DE102014215911A1 (en) * | 2014-08-12 | 2016-02-18 | Zf Friedrichshafen Ag | Disc brake assembly |
DE102015213740A1 (en) * | 2015-07-21 | 2017-02-09 | Zf Friedrichshafen Ag | Electromagnetic cone brake and passenger conveyor drive |
CN105984790B (en) * | 2016-07-19 | 2018-07-17 | 苏州福特美福电梯有限公司 | One kind is from deceleration type Electromgnetic seat car |
CN107934713A (en) * | 2017-12-15 | 2018-04-20 | 江苏立达电梯有限公司 | Elevator governor, elevator governor control device and elevator speed-limiting control method |
EP3712025B1 (en) * | 2019-03-22 | 2022-11-09 | KONE Corporation | Silent electromagnetic brake |
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JP3787862B2 (en) * | 1995-10-03 | 2006-06-21 | 三菱電機株式会社 | Elevator brake device and elevator device |
JP2005172021A (en) * | 2003-12-08 | 2005-06-30 | Mitsubishi Electric Corp | Electromagnetic braking device |
JP4455042B2 (en) * | 2003-12-18 | 2010-04-21 | 三菱電機株式会社 | Elevator hoisting machine |
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- 2010-12-24 EP EP10861051.0A patent/EP2657173B1/en active Active
- 2010-12-24 WO PCT/JP2010/073353 patent/WO2012086060A1/en active Application Filing
- 2010-12-24 JP JP2012549548A patent/JP5494826B2/en not_active Expired - Fee Related
- 2010-12-24 KR KR1020137018795A patent/KR101482480B1/en not_active IP Right Cessation
- 2010-12-24 CN CN201080070855.1A patent/CN103261079B/en not_active Expired - Fee Related
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JP2003002568A (en) | 2001-06-15 | 2003-01-08 | Mitsubishi Electric Corp | Brake of winding machine for elevator |
JP2004076899A (en) * | 2002-08-21 | 2004-03-11 | Mitsubishi Electric Corp | Brake gear of elevator hoist equipment |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020183643A1 (en) * | 2019-03-13 | 2020-09-17 | 三菱電機株式会社 | Elevator hoisting machine brake and hoisting machine |
Also Published As
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CN103261079B (en) | 2015-01-28 |
CN103261079A (en) | 2013-08-21 |
JPWO2012086060A1 (en) | 2014-05-22 |
EP2657173A1 (en) | 2013-10-30 |
KR101482480B1 (en) | 2015-01-13 |
EP2657173B1 (en) | 2020-03-25 |
JP5494826B2 (en) | 2014-05-21 |
EP2657173A4 (en) | 2017-08-16 |
KR20130115324A (en) | 2013-10-21 |
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