CN115151504B - Electromagnetic brake device - Google Patents
Electromagnetic brake device Download PDFInfo
- Publication number
- CN115151504B CN115151504B CN202080097428.6A CN202080097428A CN115151504B CN 115151504 B CN115151504 B CN 115151504B CN 202080097428 A CN202080097428 A CN 202080097428A CN 115151504 B CN115151504 B CN 115151504B
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- Prior art keywords
- brake
- electromagnetic
- electromagnetic coil
- armature
- coil
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- 230000003111 delayed effect Effects 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 239000000872 buffer Substances 0.000 description 4
- 230000001603 reducing effect Effects 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- 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
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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
- F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
- F16D51/10—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as exclusively radially-movable brake-shoes
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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
- 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
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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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Braking Arrangements (AREA)
Abstract
The invention comprises the following steps: a brake shoe (303) in slidable contact with the brake drum (202); an armature (302) supporting the brake shoe (303); a plurality of brake springs (313) that press the armature (302) to apply force to the brake shoe (303) in the braking direction; and an electromagnet body (301), wherein the electromagnet body (301) electromagnetically attracts the armature (302) against the urging force of the brake spring (313) and drives the brake shoe (303) in a direction away from the brake drum (202). The electromagnet body (301) includes a first electromagnetic coil (311) and a second electromagnetic coil (312) that are energized to generate electromagnetic attractive force. When the first electromagnetic coil (311) and the second electromagnetic coil (312) are in a current-on state to current-off state, the timings of current-off are shifted.
Description
Technical Field
The present invention relates to an electromagnetic brake device used for an elevator hoisting machine and the like.
Background
In an electromagnetic brake device used in an elevator hoisting machine or the like, an armature supporting a brake shoe is pressed by the urging force of a brake spring at the time of braking, and the brake shoe is brought into contact with a brake drum of the hoisting machine to obtain a braking force. When released, the armature is electromagnetically attracted against the acting force of the brake spring, so that the brake shoe is far away from the brake drum of the traction machine.
In such an electromagnetic brake apparatus, when the brake shoe is shifted from the released state to the braking state, the electromagnetic attractive force is released and the armature is pressed by the urging force of the brake spring, so that the armature and the brake shoe move at a relatively high speed, and the brake shoe collides with the brake drum. Therefore, with the release of the electromagnetic attractive force, a collision sound is generated.
As a technique for reducing the collision noise, for example, patent document 1 has been proposed. In patent document 1, a laminated compressed rubber is provided for compressing an armature in a braking direction to obtain a reaction force against the force of a braking spring.
Prior art literature
Patent literature
Patent document 1: japanese patent laid-open publication 2016-90018
Disclosure of Invention
Technical problem to be solved by the invention
However, in the technique described in patent document 1, since a laminated compressed rubber is used for reducing the impact sound, there is a problem that the impact sound reducing effect is reduced with aging. In the technique described in patent document 1, even during braking (during braking operation), the armature is pushed back in a direction opposite to the braking direction by the reaction force of the laminated compressed rubber, and therefore, the force of the brake spring needs to be increased by an amount that is balanced with the reaction force of the laminated compressed rubber. Therefore, there is a problem that the strength of the member with respect to the reinforced brake spring needs to be improved, and further, the reinforced brake spring causes a decrease in assembly productivity of the product and an increase in production cost.
The invention aims to provide an electromagnetic brake device which can continuously reduce collision sound and improve productivity regardless of aging.
Technical means for solving the technical problems
In order to achieve the above object, an electromagnetic brake apparatus of the present invention includes: a brake shoe slidably contacting the braked body; an armature supporting the brake shoe; a plurality of brake springs for pressing the armature to apply force to the brake shoe in a braking direction; and an electromagnet body that electromagnetically attracts the armature against the urging force of the brake spring and drives the brake shoe in a direction away from the braked body,
the electromagnet body includes a first electromagnetic coil and a second electromagnetic coil that are energized to generate electromagnetic attractive force, and the timings of the respective current cutting-off are staggered from an energized state to a current cutting-off.
Effects of the invention
According to the present invention, it is possible to provide an electromagnetic brake apparatus that can maintain the effect of reducing the impact sound regardless of aged or aged deterioration and can improve productivity.
Drawings
Fig. 1 is an overall configuration diagram of an elevator apparatus according to an embodiment of the present invention.
Fig. 2 is a front view of the traction machine according to the embodiment of the present invention.
Fig. 3 is a front view of an electromagnetic brake apparatus according to an embodiment of the present invention.
Fig. 4 is a top view of the electromagnetic brake apparatus of fig. 3 viewed from the arrow P direction.
Fig. 5 is a diagram showing a connection relationship between a control device and each device according to an embodiment of the present invention.
FIG. 6 is a timing diagram relating to a brake command, a first solenoid, and a second solenoid in accordance with an embodiment of the present invention.
Fig. 7 is a flowchart illustrating an operation of the electromagnetic brake apparatus according to the embodiment of the present invention.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same reference numerals are given to the same constituent elements, and the same description is not repeated.
The various components of the present invention need not necessarily exist independently, but rather allows one component to be constituted by a plurality of members, a plurality of components to be constituted by one member, one component to be a part of another component, a part of one component to be overlapped with a part of another component, and the like.
Fig. 1 is an overall configuration diagram of an elevator apparatus according to an embodiment of the present invention. The hoistway 101 of the elevator apparatus 10 includes a car 102 that moves up and down in the hoistway 101, a guide rail 103 that guides the movement of the car 102, a counterweight 104 that moves up and down in a direction opposite to the movement direction of the car 102, a guide rail 105 that guides the movement of the counterweight 104, a main rope 106 that connects the car 102 and the counterweight 104, a sheave 107 that supports the main rope 106, and a hoisting machine 108 that winds the main rope 106 to move up and down the car 102. A governor 109 is provided in the hoistway 101, and the governor 109 senses the speed of the car 102 and operates when the car 102 accelerates to a rated speed or higher to operate the safety device. Buffers 110 and 111 are provided at the bottom of the hoistway 101, and the buffers 110 and 111 reduce collision when the car 102 and the counterweight 104 descend and exceed the lowest floor. Landing doors 112 are provided on each floor of the elevator apparatus 10. The hoistway 101 includes a control device 113, and the control device 113 controls the car 102, the hoisting machine 108, and the like.
Next, the construction of the hoisting machine will be described. Fig. 2 is a front view of the traction machine according to the embodiment of the present invention.
The hoisting machine 108 includes a motor (not shown), a sheave 201 connected to the motor for rotation and suspending the main rope 106, a brake drum 202 rotating together with the sheave 201, and a motor frame 203 supporting the motor, the sheave 201, and the brake drum 202.
Further, electromagnetic brake devices 300 are provided above and below the motor frame 203, and the electromagnetic brake devices 300 are disposed so as to face each other with the brake drum 202 interposed therebetween from above and below. The electromagnetic brake apparatus 300 brakes the hoisting machine 108 by bringing brake shoes 303 (fig. 3) into contact with the brake drum 202.
Next, the structure of the electromagnetic brake apparatus will be described. Fig. 3 is a front view of an electromagnetic brake apparatus according to an embodiment of the present invention, and fig. 4 is a plan view of the electromagnetic brake apparatus of fig. 3 viewed from the direction of arrow P.
The electromagnetic braking device 300 includes: an electromagnet body 301 provided with a first electromagnetic coil 311 and a second electromagnetic coil 312 that generate electromagnetic attraction force; an armature 302 disposed opposite to the electromagnet body 301; a brake shoe 303 supported by the armature 302 and braking in sliding contact with a braked body such as the brake drum 202 of the hoisting machine 108; a plurality of braking springs 313 that apply force to the armature 302 in a braking direction B of the brake shoe 303; and a plurality of travel adjustment rings 304 that guide the travel of the armature 302.
In the electromagnet body 301, a coil housing 320 is formed in a circumferential shape as seen in the direction of arrow P (in plan view) in fig. 3, and the first electromagnetic coil 311 and the second electromagnetic coil 312 are housed in the coil housing 320. The first electromagnetic coil 311 and the second electromagnetic coil 312 are disposed in the coil housing 320 so as to overlap from the electromagnet body 301 toward the armature 302. The first electromagnetic coil 311 is an electromagnetic coil that generates stronger electromagnetic attraction force than the second electromagnetic coil 312. The first electromagnetic coil 311 and the second electromagnetic coil 312 that are stacked and stored in the coil storage 320 are disposed in the coil storage 320 such that the second electromagnetic coil 312 having a weaker electromagnetic attraction force than the first electromagnetic coil 311 is located on the side closer to the armature 302.
A plurality of brake spring housing portions 321 are formed on the inner peripheral side of the coil housing portion 320 formed in a circumferential shape, and each of the brake springs 313 is housed. In the present embodiment, since the plurality of braking springs 313 are disposed on the inner peripheral side of the coil housing 320 (the first electromagnetic coil 311 and the second electromagnetic coil 312), it is not necessary to provide a space for disposing the braking springs 313 on the outer peripheral sides of the first electromagnetic coil 311 and the second electromagnetic coil 312, and the electromagnetic brake apparatus 300 can be miniaturized.
The electromagnet body 301 is provided with a plurality of fixing bolts 305 for fixing the electromagnetic brake device 300 to the motor frame 203 of the hoisting machine 108, and the brake shoes 303 of the electromagnetic brake device 300 and the brake drum 202 of the hoisting machine 108 are disposed at positions facing each other by the fixing bolts 305.
The operation of the electromagnetic brake apparatus 300 will be described. In the electromagnetic brake apparatus 300, when the first electromagnetic coil 311 and the second electromagnetic coil 312 are in the energized state, electromagnetic attractive force is generated, attracting the armature 302 to the electromagnet main body 301 side, with the result that the brake shoe 303 acts away from the brake drum 202. In the electromagnetic brake apparatus 300, when the first electromagnetic coil 311 and the second electromagnetic coil 312 are switched from the energized state to the current cut-off state, the armature 302 attracted to the electromagnet main body 301 side is separated from the electromagnet main body 301 by the urging force of the braking spring 313, and as a result, the brake shoe 303 is operated so as to be pressed against the brake drum 202.
The electromagnetic brake apparatus 300 further includes a brake operation detector 330, and the brake operation detector 330 detects that the brake shoe 303 is in contact with the brake drum 202. The brake actuation detector 330 is composed of a switch portion 330a mounted to the electromagnet main body 301, and a contact portion 330b mounted to the armature 302 and in contact with the switch portion 330 a. In a state in which the armature 302 is attracted to the electromagnet main body 301 by the electromagnetic attractive force of the first electromagnetic coil 311 and the second electromagnetic coil 312, the tip end portion of the switch portion 330a is in contact with the contact portion 330b, and therefore the brake actuation detector 330 detects a non-braking state, which is a state in which the brake shoe 303 is not in contact with the brake drum 202. On the other hand, in a state where the current of the first electromagnetic coil 311 and the second electromagnetic coil 312 is cut off and the armature 302 is pressed to the brake drum 202 side by the brake spring 313, the tip end portion of the switch portion 330a is separated from the contact portion 330b, and therefore, the brake operation detector 330 detects a braking state, which is a state where the brake shoe 303 is in contact with the brake drum 202.
Next, the connection relationship between the control device 113 controlling the elevator apparatus 10 and each device will be described with reference to fig. 5. Fig. 5 is a diagram showing a connection relationship between a control device and each device according to an embodiment of the present invention.
The control device 113 provided in the elevator shaft 101 includes: a storage unit 113a that stores a control program for controlling the elevator apparatus 10; and an arithmetic unit 113b that performs arithmetic operation based on the input information of each device and the control program.
A plurality of sensor groups such as a position sensor 501 for detecting the position of the car 102, a landing call button 502 provided on each floor for calling the car 102, a destination floor input unit 503 provided in the car 102 for inputting a destination floor, a door opening/closing button 504 provided in the car 102, a brake operation detector 330 provided in the electromagnetic brake device 300, and the like are connected to the elevator device 10, and information is input to the control device 113.
The hoisting machine 108, the door opening/closing unit 510 for opening and closing the door of the car 102, and the first electromagnetic coil 311 and the second electromagnetic coil 312 for braking and releasing the electromagnetic brake device 300 are connected to the control device 113, and the control device 113 controls these based on the result calculated by the arithmetic unit 113 b.
In an electromagnetic brake apparatus used in a hoisting machine of an elevator or the like, when a brake shoe is changed from a released state to a braked state, an electromagnetic attractive force is released and an armature is pressed by an urging force of a brake spring, so that the armature and the brake shoe move at a relatively high speed, and the brake shoe collides with a brake drum. Therefore, with the release of the electromagnetic attractive force, a collision sound is generated. The method of suppressing the collision sound will be described with reference to fig. 3 to 7.
Fig. 6 is a timing chart relating to a brake command, a first solenoid, and a second solenoid according to an embodiment of the present invention, and fig. 7 is a flowchart showing an operation of an electromagnetic brake device according to an embodiment of the present invention.
In the present embodiment, as described above, the plurality of electromagnetic coils of the first electromagnetic coil 311 and the second electromagnetic coil 312 serve as a unit that electromagnetically attracts the armature 302. The second electromagnetic coil 312 is an electromagnetic coil that generates weaker electromagnetic attraction force than the first electromagnetic coil 311.
In the present embodiment, the timings of current interruption of the first electromagnetic coil 311 and the second electromagnetic coil 312 are shifted from the energized state to the current interruption.
The energization and the cutoff of the first electromagnetic coil 311 and the second electromagnetic coil 312 are controlled based on a braking command generated by the control device 113 and by a command from the control device 113.
As shown in fig. 6, at time t1, when a brake command is switched from braking to release, the first electromagnetic coil 311 and the second electromagnetic coil 312 of the electromagnetic brake apparatus 300 are in an energized state, and the armature 302 is attracted to the electromagnet main body 301 side. As a result, the brake shoe 303 is separated from the brake drum 202.
Further, when the brake command is switched from release to braking at time t2, the electromagnetic brake apparatus 300 cuts off the current to the first electromagnetic coil 311. At this time, since the current of the second electromagnetic coil 312 is not cut off, the reaction force against the plurality of braking springs 313 acts on the armature 302. However, since the reaction force of the second electromagnetic coil 312 has not yet reached a degree to which the armature 302 is attracted to the electromagnet main body 301 against the urging forces of the plurality of braking springs 313, the armature 302 urged by the plurality of braking springs 313 moves toward the brake drum 202 in a reduced speed state, and the brake shoe 303 comes into contact with the brake drum 202. Then, after a predetermined time elapses from the first electromagnetic coil 311 (time t 3), the energization of the second electromagnetic coil 312 is cut off. That is, the current cut-off timing of the second electromagnetic coil 312 is delayed from that of the first electromagnetic coil 311.
Also, at time t4, when the brake command is switched from braking to release, the first electromagnetic coil 311 and the second electromagnetic coil 312 of the electromagnetic brake apparatus 300 are in an energized state, and the armature 302 is attracted to the electromagnet main body 301 side. Thereafter, when the brake command is switched from release to braking at time t5, the electromagnetic brake apparatus 300 cuts off the energization to the first electromagnetic coil 311, and cuts off the energization to the second electromagnetic coil 312 at a time t6 delayed after the current cut-off to the first electromagnetic coil 311.
In the present embodiment, the current interruption time t3 (t 6) of the second electromagnetic coil 312 is delayed by a predetermined time t3-t2 (t 6-t 5) from the current interruption time t2 (t 5) of the first electromagnetic coil 311. Regarding the predetermined time t3 to t2 (t 6 to t 5), the electromagnetic attractive force of the first electromagnetic coil 311 and the second electromagnetic coil 312 and the urging forces of the plurality of braking springs 313 are stored in the storage portion 113a of the control device 113 in advance taking into consideration.
In addition, the current interruption time t3 (t 6) of the second electromagnetic coil 312 can be determined based on the brake operation detector 330. When the current of the first electromagnetic coil 311 is cut off, the armature 302 is separated from the electromagnet body 301 due to the force of the braking spring 313, and the brake shoe 303 is brought into contact with the brake drum 202. At the time when the brake shoe 303 contacts the brake drum 202, the tip of the switch 330a of the brake actuation detector 330 is separated from the contact 330b, and the brake actuation detector 330 is turned off. At the time when the brake actuation detector 330 is turned off, the current of the second electromagnetic coil 312 is cut off
Next, the processing of the control device 113 will be described in detail with reference to fig. 7.
In step S701, the control device 113 determines whether or not there is a brake release instruction. If a brake release command is given (yes in step S701), the process proceeds to step S702. If there is no brake release instruction (no in step S701), the process in step S701 is repeated.
In step S702, energization of the first electromagnetic coil 311 and the second electromagnetic coil 312 is started, and the process advances to step S703.
In step S703, the control device 113 determines whether or not there is a braking instruction. If a braking instruction is given (yes in step S703), the process proceeds to step S704. If there is no braking instruction (no in step S703), the process in step S703 is repeated.
In step S704, the current of the first electromagnetic coil 311 is cut off, and the flow of the process proceeds to step S705.
In step S705, it is determined whether a predetermined time has elapsed after the current of the first electromagnetic coil 311 is turned off or whether the brake actuation detector is turned off. If a predetermined time has elapsed after the current to the first electromagnetic coil 311 is turned off or if the brake actuation detector is turned off (yes in step S705), the flow proceeds to step S706. When the predetermined time has not elapsed after the current to the first electromagnetic coil 311 is turned off or when the brake actuation detector is in the on state (no in step S705), the process in step S705 is repeated.
In step S706, after the current of the second electromagnetic coil 312 is cut off, the processing from step S701 is repeated.
As described above, in the present embodiment, when the first electromagnetic coil and the second electromagnetic coil are switched from the energized state to the current cut-off, the respective times of the current cut-off are staggered, and therefore, after the current cut-off of one of the electromagnetic coils, the reaction force to the brake spring is ensured by the other electromagnetic coil. As a result, according to the present embodiment, when the current of the electromagnetic coil is cut off, the moving speed of the armature due to the urging force of the brake spring can be suppressed, and therefore the collision sound of the brake shoe colliding with the brake drum can be reduced.
In addition, according to the present embodiment, it is possible to continuously mitigate the impact sound without being affected by aging over time.
In addition, the present invention has little reaction force acting during braking, so that the force of the braking spring does not need to be enhanced to more than a required degree, thereby improving productivity.
Further, in the present embodiment, the second electromagnetic coil having a weaker electromagnetic attraction force than the first electromagnetic coil is arranged on the armature side. By such a configuration, in the present embodiment, the reaction force of the second electromagnetic coil can be effectively utilized.
The present invention is not limited to the above-described embodiments, and includes various modifications. The foregoing embodiments have been described in some detail for purposes of clarity of understanding, but are not necessarily limited to the details of all structures described.
Description of the reference numerals
10. Elevator device
101. Elevator shaft
102. Car body
103. Guide rail
104. Counterweight
105. Guide rail
106. Main rope
107. Pulley wheel
108. Traction machine
109. Speed regulator
110. Buffer device
111. Buffer device
112. Landing door
113. Control device
113a storage part
113g computing unit
201. Rope sheave
202. Brake drum
203. Motor frame
300. Electromagnetic brake device
301. Electromagnet body
302. Armature
303. Brake shoe
304. Stroke adjusting ring
305. Bolt for fixing
311. First electromagnetic coil
312. Second electromagnetic coil
313. Braking spring
320. Coil housing part
321. Brake spring housing part
330. Brake action detector
330a switch part
330b contact portion
501. Position sensor
502. Landing call button
503. Destination floor input unit
504. Door opening and closing button
510. A door opening and closing part.
Claims (7)
1. An electromagnetic braking device comprising:
a brake shoe slidably contacting the braked body; an armature supporting the brake shoe; a plurality of brake springs for pressing the armature to apply force to the brake shoe in a braking direction; and an electromagnet body that electromagnetically attracts the armature against the urging force of the brake spring and drives the brake shoe in a direction away from the braked body, the electromagnetic brake device being characterized in that,
the electromagnet body includes a first electromagnetic coil and a second electromagnetic coil energized to generate an electromagnetic attractive force,
the first electromagnetic coil and the second electromagnetic coil are staggered in timing of current interruption from the energized state to the current interruption,
the first electromagnetic coil is an electromagnetic coil that produces a stronger electromagnetic attraction force than the second electromagnetic coil,
the current interruption timing of the second electromagnetic coil is delayed from that of the first electromagnetic coil, so that after the current interruption of the first electromagnetic coil, the object to be braked is brought into contact with the brake shoe by the urging force of the plurality of brake springs, and the reaction force to the plurality of brake springs is ensured by the second electromagnetic coil.
2. The electromagnetic brake apparatus of claim 1, wherein,
the first electromagnetic coil and the second electromagnetic coil are housed in a coil housing portion formed in the electromagnet body.
3. The electromagnetic brake apparatus of claim 2, wherein,
the coil housing portion is formed in a circumferential shape, and the plurality of brake springs are disposed on an inner circumferential side of the coil housing portion.
4. The electromagnetic brake apparatus of claim 2, wherein,
the first electromagnetic coil and the second electromagnetic coil are arranged so as to overlap from the electromagnet body toward the armature.
5. The electromagnetic brake apparatus of claim 4, wherein,
the second electromagnetic coil is disposed closer to the armature side than the first electromagnetic coil.
6. The electromagnetic brake apparatus of claim 1, wherein,
the electromagnetic brake device includes a brake action detector that detects a contact condition of the brake shoe with the braked body.
7. The electromagnetic brake apparatus of claim 6, wherein,
the brake actuation detector is configured by a switch portion mounted on the electromagnet body, and a contact portion mounted on the armature and in contact with the switch portion.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2020/012619 WO2021191945A1 (en) | 2020-03-23 | 2020-03-23 | Electromagnetic brake device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115151504A CN115151504A (en) | 2022-10-04 |
| CN115151504B true CN115151504B (en) | 2023-12-26 |
Family
ID=77891133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080097428.6A Active CN115151504B (en) | 2020-03-23 | 2020-03-23 | Electromagnetic brake device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7319458B2 (en) |
| CN (1) | CN115151504B (en) |
| WO (1) | WO2021191945A1 (en) |
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-
2020
- 2020-03-23 JP JP2022509761A patent/JP7319458B2/en active Active
- 2020-03-23 CN CN202080097428.6A patent/CN115151504B/en active Active
- 2020-03-23 WO PCT/JP2020/012619 patent/WO2021191945A1/en active Application Filing
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| JP2007162748A (en) * | 2005-12-09 | 2007-06-28 | Kyocera Mita Corp | Electromagnetic clutch |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN115151504A (en) | 2022-10-04 |
| JP7319458B2 (en) | 2023-08-01 |
| WO2021191945A1 (en) | 2021-09-30 |
| JPWO2021191945A1 (en) | 2021-09-30 |
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