KR102339613B1 - Electric Magnetic Brake Operating structure - Google Patents

Electric Magnetic Brake Operating structure Download PDF

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Publication number
KR102339613B1
KR102339613B1 KR1020210026895A KR20210026895A KR102339613B1 KR 102339613 B1 KR102339613 B1 KR 102339613B1 KR 1020210026895 A KR1020210026895 A KR 1020210026895A KR 20210026895 A KR20210026895 A KR 20210026895A KR 102339613 B1 KR102339613 B1 KR 102339613B1
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KR
South Korea
Prior art keywords
pad
plate
cover
electromagnetic brake
coupled
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KR1020210026895A
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Korean (ko)
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배인열
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(주)삼성정밀
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/24—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member
    • F16D55/26—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member without self-tightening action
    • F16D55/28—Brakes with only one rotating disc
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D59/00—Self-acting brakes, e.g. coming into operation at a predetermined speed
    • F16D59/02—Self-acting brakes, e.g. coming into operation at a predetermined speed spring-loaded and adapted to be released by mechanical, fluid, or electromagnetic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D2055/0004—Parts or details of disc brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/18—Electric or magnetic
    • F16D2121/20—Electric or magnetic using electromagnets

Abstract

The present invention relates to an operation structure for an electromagnetic brake, which comprises: a body (20) having a coil (10) and generating magnetism; a disc plate (30) mounted on the right side of the body; a left pad (41); a pad plate (42) engaged with the right side of the left pad (41); a right pad (43) engaged with the right side of the pad plate (42); a cover (50) engaged with the right side of the right pad (43); and a hub gear (60) penetrating a center portion hole of the body, the disc plate, the left pad, the right pad, the pad plate, and the cover, thereby horizontally and successively engaging the body, the disc plate, the left pad, the right pad, the pad plate, and the cover. The electromagnetic brake is moved to the left by the magnetism generated in the body, comes in close contact with the right-side surface of the body, generates a frictional force, and generates a braking force for a motor driving a wheel. The present invention is able to simply and easily manufacture an electromagnetic brake, make it convenient to operate the electromagnetic brake, allow a long life to the electromagnetic brake, and have fewer disorders.

Description

전자 브레이크 동작구조{Electric Magnetic Brake Operating structure}Electromagnetic Brake Operating structure

본발명은 전자브레이크 동작구조에 관한 것으로, 보다 상세하게는 전자브레이크를 간단하고 용이하게 제작할 수 있고 작동이 편리하며 장기간 사용기 가능하며 고장이 적은 전자브레이크 동작구조를 제공하고자 하는 것이다.The present invention relates to an electromagnetic brake operation structure, and more particularly, to provide an electromagnetic brake operation structure in which the electromagnetic brake can be manufactured simply and easily, the operation is convenient, can be used for a long period of time, and has few failures.

일반적으로 제동에 사용되는 브레이크로서 전자식이 있으며, 특히 전기모토로 구동되는 차량이나 지게차에 전자브레이크가 사용되고 있다. 종래 특허기술의 일례로서 등록특허공보 등록번호 10-1381694호에는 철재 본체(2)에 설치되는 복수의 스프링(3)에 의해 탄지되고 전자석(4)의 전자력에 의해 본체(2) 방향으로 이동하는 아마츄어(5)로 구성되는 작동부(6);Generally, there is an electronic brake as a brake used for braking, and in particular, an electromagnetic brake is used in a vehicle or forklift driven by an electric motor. As an example of the prior patent technology, in Patent Registration No. 10-1381694, which is supported by a plurality of springs 3 installed on the iron body 2 and moves in the direction of the body 2 by the electromagnetic force of the electromagnet 4 , an operation unit 6 composed of an armature 5;

상기 아마츄어(5)의 이동 위치에 따라 구동축(7)에 결합된 브레이크 패드(8)를 제동시키거나 제동 해제시키는 제동부(9);a braking unit (9) for braking or releasing the brake pad (8) coupled to the drive shaft (7) according to the movement position of the armature (5);

상기 제동부(9)의 제동 해제시 전자석(4)으로 정상전류를 공급하고, 제동 해제 상태가 유지되는 동안에는 정상전류보다 적은 감소전류를 공급시키는 과여자부;an over-excitation unit supplying a normal current to the electromagnet 4 when the braking unit 9 is released, and supplying a reduced current less than the normal current while the braking release state is maintained;

배터리(B)가 방전되거나 고장으로 제동된 경우 레버(11)를 이용하여 제동 상태를 비상 해제시키는 수동해제부;a manual release unit for emergency release of the braking state using the lever 11 when the battery B is discharged or braked due to a malfunction;

를 포함하되, 상기 과여자부는, 마찰판(22)의 일단에 형성되는 통공(39);Including, wherein the over-excitation portion, a through hole (39) formed at one end of the friction plate (22);

상기 통공(39)에 결합되는 과여자 스위치(40)의 고정부(41);a fixing part 41 of the overexcitation switch 40 coupled to the through hole 39;

상기 고정부(41)를 마찰판(22)에 고정시키는 너트(42);a nut (42) for fixing the fixing part (41) to the friction plate (22);

상기 고정부(41)에 돌출 설치되고 아마츄어(5)의 마찰면(34)을 향하는 과여자 스위치(40)의 푸쉬버튼(43);a push button 43 of the overexcitation switch 40 which is installed protrudingly from the fixing part 41 and faces the friction surface 34 of the armature 5;

을 포함하는 과여자형 전자브레이크가 공개되어 있다.An overexcitation type electromagnetic brake comprising a.

또한, 등록특허공보 등록번호 10-1045709호에는 회전센서를 구비한 전자브레이크가 공개되어 있다.In addition, Patent Registration No. 10-1045709 discloses an electromagnetic brake having a rotation sensor.

그러나 상기 종래기술들은 구조가 복잡하여 제작이 어렵고 고장이 나기 쉬운 단점이 있었다.However, the prior art has a disadvantage in that it is difficult to manufacture due to a complicated structure and is prone to failure.

따라서 본발명은 상기와 같은 문제점을 해결하고자 안출된 것으로, 전자브레이크를 간단하고 용이하게 제작할 수 있고 작동이 편리하며 장기간 사용이 가능하며 고장이 적은 전자브레이크 동작구조를 제공하고자 하는 것이다.Accordingly, the present invention has been devised to solve the above problems, and an object of the present invention is to provide an electromagnetic brake operation structure that is simple and easy to manufacture, is convenient in operation, can be used for a long time, and has fewer failures.

본발명은 전자 브레이크 동작구조에 관한 것으로, 코일(10)이 내장되며 자력을 발생하는 바디(20);와바디 우측에 장착되어 디스크플레이트(30);와 좌측패드(41),와 상기 좌측패드(41)의 우측에 결합되는 패드플레이트(42)와 , 상기 패드플레이트(42)의 우측에 결합되는 우측패드(43);와The present invention relates to an electromagnetic brake operating structure, a body 20 having a coil 10 built-in and generating magnetic force; a disk plate 30 mounted on the right side of the body; and a left pad 41, and the left pad (41) a pad plate 42 coupled to the right side, and a right side pad 43 coupled to the right side of the pad plate 42; and

상기 우측패드(43)의 우측에 결합되는 커버(50);상기 바디, 디스크플레이트, 좌우패드 및 패드 플레이트, 커버의 중앙부 구멍을 관통하여 수평으로 순차적으로 결합시키는 허브 기어(60);로 이루어져서 바디에서 발생되는 자력에 의해 좌측으로 움직여 바디 우측면에 밀착되어 마찰력을 발생하여 휠을 구동하는 모터에 제동력을 발생하는 것을 특징으로 한다.a cover 50 coupled to the right side of the right pad 43; the body, the disk plate, the left and right pads and the pad plate, and a hub gear 60 passing through the central hole of the cover and sequentially coupled horizontally; a body consisting of It is characterized in that it moves to the left by the magnetic force generated from the motor and is in close contact with the right side of the body to generate a friction force to generate a braking force to the motor driving the wheel.

따라서 본발명은 전자브레이크를 간단하고 용이하게 제작할 수 있고 작동이 편리하며 장기간 사용이 가능하며 고장이 적은 현저한 효과가 있다.Therefore, the present invention has a remarkable effect that the electromagnetic brake can be manufactured simply and easily, the operation is convenient, can be used for a long period of time, and there are few failures.

도 1은 본발명의 전자브레이크 분해도
도 2는 본발명의 전자브레이크 분해사진
도 3은 본발명의 전자브레이크 허브기어 사진1 is an exploded view of an electromagnetic brake of the present invention;
Figure 2 is an exploded picture of the electromagnetic brake of the present invention;
3 is a photograph of an electronic brake hub gear of the present invention;

본발명은 전자 브레이크 동작구조에 관한 것으로, 코일(10)이 내장되며 자력을 발생하는 바디(20);와바디 우측에 장착되어 디스크플레이트(30);와 좌측패드(41),와 상기 좌측패드(41)의 우측에 결합되는 패드플레이트(42)와 , 상기 패드플레이트(42)의 우측에 결합되는 우측패드(43);와The present invention relates to an electromagnetic brake operating structure, a body 20 having a coil 10 built-in and generating magnetic force; a disk plate 30 mounted on the right side of the body; and a left pad 41, and the left pad (41) a pad plate 42 coupled to the right side, and a right side pad 43 coupled to the right side of the pad plate 42; and

상기 우측패드(43)의 우측에 결합되는 커버(50);상기 바디, 디스크플레이트, 좌우패드 및 패드 플레이트, 커버의 중앙부 구멍을 관통하여 수평으로 순차적으로 결합시키는 허브 기어(60);로 이루어져서 바디에서 발생되는 자력에 의해 좌측으로 움직여 바디 우측면에 밀착되어 마찰력을 발생하여 휠을 구동하는 모터에 제동력을 발생하는 것을 특징으로 한다.a cover 50 coupled to the right side of the right pad 43; the body, the disk plate, the left and right pads and the pad plate, and a hub gear 60 passing through the central hole of the cover and sequentially coupled horizontally; a body consisting of It is characterized in that it moves to the left by the magnetic force generated from the motor and is in close contact with the right side of the body to generate a friction force to generate a braking force to the motor driving the wheel.

또한, 상기 바디 우측면에는 방사상으로 다수개의 볼트홈(23)이 형성되고 디스크플레이트의 외주연에는 방사상으로 다수개의 반원형 홈(31)이 형성되어 커버에도 방사상으로 다수개의 볼트홀(51)이 형성되어 볼트(70)를 사용하여 체결하는 것을 특징으로 하는 전자 브레이크 동작 구조또한, 상기 바디에는 코일스프링홈이 형성되어 코일스프링이 삽입되는 것을 특징으로 한다.In addition, a plurality of bolt grooves 23 are radially formed on the right side of the body, and a plurality of semicircular grooves 31 are formed radially on the outer periphery of the disk plate. Electromagnetic brake operation structure, characterized in that fastening using bolts (70) In addition, the body is characterized in that the coil spring groove is formed and the coil spring is inserted.

또한, 상기 바디 우측면에는 방사상으로 다수개의 볼트홈(23)이 형성되고 디스크플레이트의 외주연에는 방사상으로 다수개의 반원형 홈(31)이 형성되어 커버에도 방사상으로 다수개의 볼트홀(51)이 형성되어 볼트(70)를 사용하여 체결하는 것을 특징으로 한다.In addition, a plurality of bolt grooves 23 are radially formed on the right side of the body, and a plurality of semicircular grooves 31 are formed radially on the outer periphery of the disk plate. It is characterized in that it is fastened using a bolt (70).

본발명을 첨부도면에 의해 상세히 설명하면 다음과 같다.도 1은 본발명의 전자브레이크 분해도, 도 2는 본발명의 전자브레이크 분해사진, 도 3은 본발명의 전자브레이크 허브기어 사진이다.The present invention will be described in detail with reference to the accompanying drawings as follows. FIG. 1 is an exploded view of an electromagnetic brake of the present invention, FIG. 2 is an exploded photograph of an electromagnetic brake of the present invention, and FIG. 3 is a photograph of an electromagnetic brake hub gear of the present invention.

본발명 전자브레이크의 바디(20)내부에는 태엽형태로 코일이 내장되며 전기가 연결되어 전기를 온하면 자력이 발생된다. 바디는 철재이며, 양측면을 제외한 부분은 비자성체 금속판을 사용하거나 코팅되어 자력이 우측으로만 발생되게 한다. 좌측면도 비자성체 금속판을 사용할 수 있다. 바디는 전기자동차, 지게차의 바퀴구동용 모터와 연결되어 있어서 모터의 제동역할을 한다.A coil is built in the body 20 of the electromagnetic brake of the present invention in the form of a mainspring, and when electricity is connected and the electricity is turned on, magnetic force is generated. The body is made of steel, and non-magnetic metal plates are used or coated except for both sides so that the magnetic force is generated only to the right. A non-magnetic metal plate can also be used for the left side. The body is connected to the motor for driving the wheels of electric vehicles and forklifts, so it acts as a brake for the motor.

디스크플레이트(30)는 철재 등의 자성체 금속재질로서 바디 우측에 좌우 슬라이딩되게 허브기어에 중앙구멍이 장착되어 있으므로 바디에서 발생되는 자력에 의해 좌측으로 움직여 바디 우측면에 밀착되어 마찰력을 발생한다.The disk plate 30 is made of a magnetic metal material such as iron and has a center hole mounted on the hub gear to slide left and right on the right side of the body, so it moves to the left by the magnetic force generated from the body and is in close contact with the right side of the body to generate friction.

상기 디스크플레이트(30)에는 좌측패드(41),와 상기 좌측패드(41)의 우측에 결합되는 패드플레이트(42)와 , 상기 패드플레이트(42)의 우측에 결합되는 우측패드(43);가 허브기어에 움직이지 않게 고정되어 있다. 패드플레이트(42)는 비자성체의 세라믹재질이며 패드는 탄성재질 내지 테프론 재질이다.The disk plate 30 has a left pad 41, a pad plate 42 coupled to the right side of the left pad 41, and a right pad 43 coupled to the right side of the pad plate 42; It is fixed to the hub gear so that it does not move. The pad plate 42 is made of a non-magnetic ceramic material, and the pad is made of an elastic material or Teflon material.

상기 우측패드(43)의 우측에는 비자성체인 세라믹재질 커버(50);가 결합되어 전체 구성들을 보호하게 된다.A non-magnetic ceramic material cover 50 is coupled to the right side of the right pad 43 to protect the entire components.

허브 기어(60)는 금속재질로서 상기 바디, 디스크플레이트, 좌우패드 및 패드 플레이트, 커버의 중앙부 구멍을 관통하여 수평으로 순차적으로 결합시킨다. 허브기어는 원통형상이다.The hub gear 60 is made of a metal material and passes through the central hole of the body, the disk plate, the left and right pads and pad plates, and the cover, and is horizontally and sequentially coupled. The hub gear has a cylindrical shape.

그리고 상기 바디에는 코일스프링홈이 방사상으로 형성되어 코일스프링이 삽입되어 충격을 완충시킨다.In addition, a coil spring groove is radially formed in the body, and the coil spring is inserted to cushion the impact.

그리고 상기 바디 우측면에는 방사상으로 다수개의 볼트홈이 형성되고 디스크플레이트의 외주연에는 방사상으로 다수개의 반원형 홈(31)이 형성되어 커버에도 방사상으로 다수개의 볼트홀이 형성되어 볼트(70)를 사용하여 체결하는 것이다.And a plurality of bolt grooves are radially formed on the right side of the body, and a plurality of semicircular grooves 31 are formed on the outer periphery of the disk plate radially. is to conclude

본발명 적용 차종은 주로 1 ~ 1.5 ton 급 전기 지게차이다.The vehicle model to which the present invention is applied is mainly a 1-1.5 ton class electric forklift.

사용 Spec은 36V (사용전압), 3A (사용전류) 이하에서 사용한다. 적용 type은 특히 전륜 주차 브레이크 용이다.Use spec is 36V (used voltage), 3A (used current) or less. The application type is especially for front-wheel parking brake.

따라서 본발명은 전자브레이크를 간단하고 용이하게 제작할 수 있고 작동이 편리하며 고장이 적은 현저한 효과가 있다.Therefore, the present invention has a remarkable effect that the electromagnetic brake can be manufactured simply and easily, the operation is convenient, and the failure is small.

10 : 코일 20 : 바디
21 : 스프링홈 22 : 코일스프링
30 : 디스크 플레이트(Disc plate)
41 : 좌측패드(pad) 42 : 패드플레이트
43 : 우측패드 50 : 커버 (Cover)
60 : 허브기어( Hub gear) 70 : 체결볼트10: coil 20: body
21: spring groove 22: coil spring
30: Disc plate
41: left pad (pad) 42: pad plate
43: right pad 50: cover
60: Hub gear 70: Fastening bolt

Claims (2)

코일(10)이 내장되며 자력을 발생하는 바디(20);와 바디 우측에 장착되어 디스크플레이트(30);와 좌측패드(41),와 상기 좌측패드(41)의 우측에 결합되는 패드플레이트(42)와, 상기 패드플레이트(42)의 우측에 결합되는 우측패드(43);와
상기 우측패드(43)의 우측에 결합되는 커버(50);상기 바디, 디스크플레이트, 좌우패드 및 패드 플레이트, 커버의 중앙부 구멍을 관통하여 수평으로 순차적으로 결합시키는 허브 기어(60);로 이루어져서 바디에서 발생되는 자력에 의해 좌측으로 움직여 바디 우측면에 밀착되어 마찰력을 발생하여 휠을 구동하는 모터에 제동력을 발생하는 것으로, 상기 바디 우측면에는 방사상으로 다수개의 볼트홈(23)이 형성되고 디스크플레이트의 외주연에는 방사상으로 다수개의 반원형 홈(31)이 형성되어 커버에도 방사상으로 다수개의 볼트홀(51)이 형성되어 볼트(70)를 사용하여 체결하는 전자 브레이크 동작 구조에 있어서,
상기 패드플레이트(42)는 비자성체의 세라믹재질이며 패드는 탄성재질 내지 테프론 재질이며, 상기 우측패드(43)의 우측에는 비자성체인 세라믹재질 커버(50);가 결합되어 전체 구성들을 보호하게 되며,허브 기어(60)는 금속재질로서 상기 바디, 디스크플레이트, 좌우패드 및 패드 플레이트, 커버의 중앙부 구멍을 관통하여 수평으로 순차적으로 결합시키며, 상기 허브기어는 원통형상이고 상기 바디에는 코일스프링홈(21)이 방사상으로 형성되어 코일스프링(22)이 삽입되어 충격을 완충시키는 것으로,
적용 차종은 1 ~ 1.5 ton 급 전기 지게차이며, 사용 사양은 사용전압 36V , 사용전류 3A 이하에서 사용하는 것으로, 전륜 주차 브레이크 용인 것을 특징으로 하는 전자 브레이크 동작 구조A body 20 having a coil 10 built-in and generating a magnetic force; and a disk plate 30 mounted on the right side of the body; and a left pad 41 and a pad plate coupled to the right side of the left pad 41 ( 42) and the right pad 43 coupled to the right side of the pad plate 42; and
a cover 50 coupled to the right side of the right pad 43; the body, the disk plate, the left and right pads and the pad plate, and the hub gear 60 passing through the central hole of the cover and horizontally coupled in sequence; a body consisting of It moves to the left by the magnetic force generated from the body and comes in close contact with the right side of the body to generate a friction force to generate a braking force for the motor that drives the wheel. In the electromagnetic brake operation structure in which a plurality of semicircular grooves 31 are formed radially on the periphery, and a plurality of bolt holes 51 are formed radially in the cover, and are fastened using bolts 70,
The pad plate 42 is made of a non-magnetic ceramic material, the pad is made of an elastic material or a Teflon material, and a non-magnetic ceramic material cover 50 is coupled to the right side of the right side pad 43 to protect the entire components. , The hub gear 60 is a metal material and passes through the central hole of the body, the disc plate, the left and right pads and pad plates, and the cover and is horizontally coupled in sequence, the hub gear has a cylindrical shape and the body has a coil spring groove 21 ) is formed radially and the coil spring 22 is inserted to cushion the impact,
The applicable car type is a 1-1.5 ton class electric forklift, and the specifications for use are under 36V of operating voltage and 3A of operating current, and electromagnetic brake operation structure characterized in that it is for front-wheel parking brake. 삭제delete
KR1020210026895A 2021-02-26 2021-02-26 Electric Magnetic Brake Operating structure KR102339613B1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009092094A (en) * 2007-10-04 2009-04-30 Tamagawa Seiki Co Ltd Electromagnetic brake device
KR20100125868A (en) * 2009-05-22 2010-12-01 김동선 Magnetic brake with a pulse generator
KR101729293B1 (en) * 2017-02-20 2017-04-21 김종갑 Manufacturing method of electric magnetic brake and thereby electric magnetic brake
JP2019199957A (en) * 2018-05-18 2019-11-21 株式会社協和精工 Electromagnetic brake device
JP2020125794A (en) * 2019-02-04 2020-08-20 Ntn株式会社 Non-excitation operation type electromagnetic brake

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009092094A (en) * 2007-10-04 2009-04-30 Tamagawa Seiki Co Ltd Electromagnetic brake device
KR20100125868A (en) * 2009-05-22 2010-12-01 김동선 Magnetic brake with a pulse generator
KR101729293B1 (en) * 2017-02-20 2017-04-21 김종갑 Manufacturing method of electric magnetic brake and thereby electric magnetic brake
JP2019199957A (en) * 2018-05-18 2019-11-21 株式会社協和精工 Electromagnetic brake device
JP2020125794A (en) * 2019-02-04 2020-08-20 Ntn株式会社 Non-excitation operation type electromagnetic brake

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