WO2019220550A1 - Brake device for elevator - Google Patents

Brake device for elevator Download PDF

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Publication number
WO2019220550A1
WO2019220550A1 PCT/JP2018/018801 JP2018018801W WO2019220550A1 WO 2019220550 A1 WO2019220550 A1 WO 2019220550A1 JP 2018018801 W JP2018018801 W JP 2018018801W WO 2019220550 A1 WO2019220550 A1 WO 2019220550A1
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WO
WIPO (PCT)
Prior art keywords
plunger
inclined surfaces
brake device
bush
axial direction
Prior art date
Application number
PCT/JP2018/018801
Other languages
French (fr)
Japanese (ja)
Inventor
和雄 淺野
Original Assignee
三菱電機株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2018/018801 priority Critical patent/WO2019220550A1/en
Publication of WO2019220550A1 publication Critical patent/WO2019220550A1/en

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Classifications

    • 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
    • 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
    • F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
    • F16D49/16—Brakes with two brake-blocks

Definitions

  • the present invention relates to an elevator brake device.
  • Patent Document 1 describes an example of an elevator brake device.
  • the brake device includes a bush and a plunger.
  • a bush is provided in the perimeter of the outer peripheral side of a plunger.
  • the plunger is guided by the bush and presses the lever to press the lining against the brake drum.
  • the present invention has been made to solve such problems.
  • the objective of this invention is providing the brake device of the elevator which a bush is biased and is hard to wear.
  • a brake device releases a car ascending / descending by moving to a first position in the axial direction, and moves to a second position in the axial direction when braking the car ascending / descending, and an inner surface is a plunger.
  • the plunger releases the elevator from moving up and down by moving to the first axial position.
  • the plunger moves to the second axial position during braking of the car.
  • the bush guides the axial movement of the plunger.
  • the rotation mechanism rotates the plunger in the forward direction when the plunger moves between the first position and the second position. Thereby, the bush of a brake device becomes difficult to wear unevenly.
  • FIG. 1 is a configuration diagram of an elevator according to Embodiment 1.
  • FIG. 1 is a front view of a brake device according to Embodiment 1.
  • FIG. 1 is a front view of a brake device according to Embodiment 1.
  • FIG. 3 is a front view of an operation unit according to Embodiment 1.
  • FIG. 3 is a front view of an operation unit according to Embodiment 1.
  • FIG. 3 is a front view of an operation unit according to Embodiment 1.
  • FIG. 3 is a front view of an operation unit according to Embodiment 1.
  • FIG. 3 is a front view of an operation unit according to Embodiment 1.
  • FIG. FIG. 3 is a top view of the main part of the brake device according to the first embodiment.
  • FIG. 3 is a front view of a main part of the brake device according to the first embodiment.
  • FIG. 1 is a configuration diagram of an elevator according to the first embodiment.
  • the building where the elevator 1 is provided has a plurality of floors.
  • the hoistway 2 penetrates each floor of the building.
  • Each of the multiple halls is provided on each floor of the building.
  • Each of the plurality of halls faces the hoistway 2.
  • the machine room 3 is provided in the upper part of the hoistway 2.
  • the elevator 1 includes a car 4, a weight 5, a hoisting machine 6, a deflector 7, a main rope 8, and a brake device 9.
  • the car 4 is provided inside the hoistway 2 so that it can be raised and lowered along a guide rail (not shown).
  • the weight 5 is provided inside the hoistway 2 so that it can be raised and lowered along a guide rail (not shown).
  • the hoisting machine 6 is provided in the machine room 3.
  • the hoisting machine 6 includes a motor and a sheave.
  • the motor of the hoisting machine 6 is a device that rotationally drives the sheave of the hoisting machine 6.
  • the deflecting wheel 7 is provided in the machine room 3.
  • the deflecting wheel 7 is a sheave.
  • the main rope 8 is wound around the sheave of the hoisting machine 6.
  • the main rope 8 is wound around the baffle wheel 7.
  • One end of the main rope 8 is held by the car 4.
  • the other end of the main rope 8 is held by the weight 5.
  • the brake device 9 is a device that brakes the raising and lowering of the car 4.
  • the main rope 8 is driven by the motor of the hoisting machine 6 and moves.
  • the brake device 9 releases the rotation of the sheave of the hoisting machine 6.
  • the car 4 moves up and down following the movement of the main rope 8.
  • the weight 5 moves up and down following the movement of the main rope 8.
  • the car 4 stops on the floor where the landing is provided.
  • the brake device 9 brakes the rotation of the sheave of the hoisting machine 6. Thereby, the raising / lowering of the cage
  • a user of the elevator 1 gets on the car 4 from the landing. Alternatively, the user of the elevator 1 gets off from the car 4 to the landing.
  • FIG. 2 is a front view of the brake device according to the first embodiment.
  • FIG. 2 shows a state in which the brake device 9 suppresses the rotation of the sheave of the hoisting machine 6.
  • the upward direction on the paper is the upward direction of the brake device 9.
  • the right direction of the drawing is the right direction of the brake device 9.
  • the brake device 9 includes a brake drum 10, a pair of arms 11, a pair of linings 12, a pair of springs 13, a pair of levers 14, and an operating unit 15.
  • the brake drum 10 is a member that rotates in synchronization with the sheave of the hoisting machine 6.
  • the brake drum 10 has a disk shape.
  • One of the pair of arms 11 is provided on the right side of the brake drum 10. The other of the pair of arms 11 is provided on the left side of the brake drum 10.
  • Each of the pair of arms 11 includes an arm pin 16.
  • the arm pin 16 is provided at the lower end of the arm 11.
  • Each of the pair of arms 11 is provided so that it can be opened and closed with respect to the brake drum 10 by rotating around the arm pin 16.
  • One of the pair of linings 12 is provided on the right arm 11.
  • the other of the pair of linings 12 is provided on the left arm 11.
  • Each of the pair of linings 12 faces the outer peripheral surface of the brake drum 10.
  • Each of the pair of springs 13 is provided at the end of each of the pair of arms 11 opposite to the arm pin 16. One of the pair of springs 13 is provided to be compressed so as to push the right arm 11 toward the brake drum 10. The other of the pair of springs 13 is provided by being compressed so as to push the left arm 11 toward the brake drum 10.
  • One of the pair of levers 14 is provided on the right side of the brake device 9.
  • the other of the pair of levers 14 is provided on the left side of the brake device 9.
  • Each of the pair of levers 14 is provided above the brake drum 10.
  • Each of the pair of levers 14 includes a lever pin 17.
  • the lever pin 17 of the right lever 14 is provided at the right end of the lever 14.
  • the lever pin 17 of the left lever 14 is provided at the left end of the lever 14.
  • Each of the pair of levers 14 is provided to be rotatable about a lever pin 17 as an axis.
  • the right lever 14 contacts the arm 11 so as to open the right arm 11 to the right by rotation.
  • the left lever 14 contacts the arm 11 so as to open the left arm 11 to the left by rotation.
  • the operating unit 15 is provided on the upper part of the brake device 9.
  • the operating unit 15 includes a plunger 18, a fixed iron core 19, an upper bush 20, a lower bush 21, an excitation coil 22, a case 23, and a rotation mechanism 24.
  • the plunger 18 has a shape to be rotated with the vertical direction as the axial direction.
  • the lower part of the plunger 18 is thinner than the upper part of the plunger 18.
  • the plunger 18 includes a movable iron core at the top.
  • the lower part of the plunger 18 is in contact with the end of each of the pair of levers 14 opposite to the lever pin 17.
  • the plunger 18 is located at the upper position.
  • the upper position is an example of the second position.
  • the plunger 18 is provided so as to be movable to a lower position.
  • the lower position is a position below the upper position in the axial direction.
  • the lower position is an example of the first position.
  • the fixed iron core 19 has a cylindrical shape.
  • the central axis of the fixed iron core 19 is provided on the same axis as the plunger 18.
  • the fixed iron core 19 is provided on the outer peripheral side of the lower portion of the plunger 18.
  • the upper bush 20 has a cylindrical shape.
  • the central axis of the upper bush 20 is provided on the same axis as the plunger 18.
  • the upper bush 20 is provided on the outer peripheral side of the upper portion of the plunger 18 so as to guide the movement of the plunger 18 in the axial direction.
  • the inner surface of the upper bush 20 contacts the outer surface of the plunger 18.
  • the lower bush 21 has a cylindrical shape.
  • the central axis of the lower bush 21 is provided on the same axis as the plunger 18.
  • the lower bush 21 is provided on the outer peripheral side of the lower portion of the plunger 18 so that the axial movement of the plunger 18 can be guided.
  • the inner surface of the lower bush 21 is in contact with the outer surface of the plunger 18.
  • the exciting coil 22 is a device that generates a magnetic field when energized.
  • the exciting coil 22 has a cylindrical shape.
  • the central axis of the exciting coil 22 is provided on the same axis as the plunger 18.
  • the exciting coil 22 is provided on the outer peripheral side of the fixed iron core 19.
  • the exciting coil 22 is provided on the outer peripheral side of the upper bush 20.
  • the exciting coil 22 is provided on the outer peripheral side of the lower bush 21.
  • the case 23 has a shape to be rotated with the vertical direction as the axial direction.
  • the case 23 has an opening at the upper end.
  • the central axis of the case 23 is provided on the same axis as the plunger 18.
  • the case 23 accommodates the plunger 18, the fixed iron core 19, the upper bush 20, the lower bush 21, and the exciting coil 22.
  • the rotation mechanism 24 is provided at the upper end outside the case 23.
  • the rotation mechanism 24 includes a turntable 25 and a fixed body 26.
  • the forward direction is the counterclockwise direction of rotation when viewed from above.
  • the turntable 25 has a disk shape.
  • the turntable 25 is connected to the upper end of the plunger 18.
  • the central axis of the turntable 25 is provided coaxially with the central axis of the plunger 18.
  • the turntable 25 is an example of a rotating body.
  • the turntable 25 includes a plurality of upper contact portions 27a and a plurality of lower contact portions 27b.
  • the plurality of upper contact portions 27 a are provided on the peripheral edge portion of the upper surface of the rotating disk 25.
  • the plurality of upper contact portions 27a are arranged in an annular shape at a constant pitch.
  • the whole of the plurality of upper contact portions 27a has a sawtooth shape.
  • Each of the plurality of upper contact portions 27a is an example of a second contact portion.
  • Each of the plurality of upper contact portions 27a has an upper sliding surface 28a.
  • the normal line of the upper sliding surface 28 a is inclined in the reverse direction of the forward direction in the rotation direction of the rotating disk 25.
  • the plurality of lower contact portions 27b are provided on the peripheral edge portion of the lower surface of the turntable 25.
  • the plurality of lower contact portions 27b are arranged in an annular shape at a constant pitch.
  • the whole of the plurality of lower contact portions 27b has a sawtooth shape.
  • the pitch at which the plurality of lower contact portions 27b are arranged is equal to the pitch at which the plurality of upper contact portions 27a are arranged.
  • Each of the plurality of lower contact portions 27b is an example of a first contact portion.
  • Each of the plurality of lower contact portions 27b has a lower sliding surface 28b.
  • the normal line of the lower sliding surface 28 b is inclined in the reverse direction of the forward direction in the rotation direction of the rotating disk 25.
  • Each of the plurality of upper contact portions 27a overlaps one of the plurality of lower contact portions 27b on the projection plane perpendicular to the axial direction.
  • Each of the plurality of lower contact portions 27b overlaps one of the plurality of upper contact portions 27a on the projection plane perpendicular to the axial direction.
  • the plurality of lower contact portions 27b are plane-symmetric with respect to the plurality of upper contact portions 27a with respect to a plane perpendicular to the axial direction.
  • the fixed body 26 includes an upper fixed platen 29a and a lower fixed platen 29b.
  • the fixed body 26 is a part that rotates the plunger 18 in the forward direction via the turntable 25.
  • the upper fixed platen 29a has a disk shape.
  • the upper fixed platen 29a is provided above the rotating platen 25.
  • the upper fixed platen 29 a faces the upper surface of the rotating plate 25.
  • the central axis of the upper fixed plate 29 a is provided coaxially with the central axis of the plunger 18.
  • the upper fixed plate 29 a is fixed to the case 23.
  • the upper fixed platen 29a is an example of a second fixed body.
  • the upper fixed platen 29a has a plurality of upper inclined surfaces 30a.
  • the plurality of upper inclined surfaces 30a are provided on the peripheral edge of the lower surface of the upper fixed platen 29a.
  • the plurality of upper inclined surfaces 30a are arranged in an annular shape at a constant pitch.
  • the pitch at which the plurality of upper inclined surfaces 30a are arranged is equal to the pitch at which the plurality of upper contact portions 27a are arranged.
  • Each normal line of the plurality of upper inclined surfaces 30 a is inclined in the forward direction in the rotation direction of the turntable 25.
  • Each of the plurality of upper inclined surfaces 30a is parallel to one of the upper sliding surfaces 28a of the plurality of upper contact portions 27a.
  • Each of the plurality of upper inclined surfaces 30a is an example of a second inclined surface.
  • the lower fixed plate 29b has a disk shape.
  • the lower fixed platen 29 b is provided below the rotary platen 25.
  • the lower fixed platen 29 b faces the lower surface of the rotating plate 25.
  • the central axis of the lower fixed plate 29 b is provided coaxially with the central axis of the plunger 18.
  • the lower fixed platen 29 b is fixed to the case 23.
  • the lower fixed platen 29b is an example of a first fixed body.
  • the lower fixed platen 29b has a plurality of lower inclined surfaces 30b.
  • the plurality of lower inclined surfaces 30b are provided on the periphery of the upper surface of the lower fixed platen 29b.
  • the plurality of lower inclined surfaces 30b are arranged in an annular shape at a constant pitch.
  • the pitch at which the plurality of lower inclined surfaces 30b are arranged is equal to the pitch at which the plurality of lower contact portions 27b are arranged.
  • Each normal line of the plurality of lower inclined surfaces 30 b is inclined in the forward direction in the rotation direction of the rotating disk 25.
  • Each of the plurality of lower inclined surfaces 30b is parallel to one of the lower sliding surfaces 28b of the plurality of lower contact portions 27b.
  • Each of the plurality of lower inclined surfaces 30b is an example of a first inclined surface.
  • Each of the plurality of upper inclined surfaces 30a is shifted in the forward direction from one of the plurality of lower inclined surfaces 30b on the projection plane perpendicular to the axial direction by a half of the pitch in which the plurality of upper inclined surfaces 30a are arranged.
  • Each of the plurality of lower inclined surfaces 30b is shifted in the forward direction from one of the plurality of upper inclined surfaces 30a on the projection plane perpendicular to the axial direction by a half of the pitch in which the plurality of lower inclined surfaces 30b are arranged.
  • the plurality of lower inclined surfaces 30b overlap the plurality of upper inclined surfaces 30a and a plurality of planes that are plane-symmetric with respect to a plane perpendicular to the axial direction, rotated about half the pitch around the axial direction.
  • the axial gap between the upper fixed platen 29a and the lower fixed platen 29b is such that when the plunger 18 is located at the upper position, the lowermost part of the rotating plate 25 passes through the uppermost part of the lower fixed platen 29b. It is provided so that it exists in the upper part.
  • the gap is provided such that when the plunger 18 is located at the lower position, the uppermost part of the rotating plate 25 is below the horizontal plane passing through the lowermost part of the upper fixed platen 29a.
  • the distance between the horizontal plane passing through the lowermost part of the upper fixed platen 29a and the horizontal plane passing through the uppermost part of the lower fixed platen 29b is set wider than the thickness from the uppermost part of the rotating platen 25 to the lowest part.
  • the distance may be a distance obtained by subtracting a distance less than half of the height of the plurality of upper contact portions 27a or the plurality of lower contact portions 27b from the thickness from the top to the bottom of the turntable 25. .
  • the right spring 13 pushes the right arm 11 toward the left side.
  • the right lining 12 is pressed against the right outer peripheral surface of the brake drum 10 by the right arm 11.
  • the left spring 13 pushes the left arm 11 toward the right side.
  • the left lining 12 is pressed against the left outer peripheral surface of the brake drum 10 by the left arm 11.
  • Each of the pair of linings 12 suppresses the rotation of the brake drum 10 by friction. Thereby, rotation of the sheave of the hoisting machine 6 that rotates in synchronization with the brake drum 10 is suppressed.
  • the exciting coil 22 is not energized.
  • the right arm 11 pushes the right lever 14 from the right side.
  • the left end of the right lever 14 goes up.
  • the left arm 11 pushes the left lever 14 from the left side.
  • the right end of the left lever 14 goes up.
  • the plunger 18 is lifted by the pair of levers 14.
  • Each of the upper bush 20 and the lower bush 21 guides the plunger 18.
  • the plunger 18 moves to the upper position.
  • the turntable 25 follows the plunger 18 and moves upward.
  • FIG. 3 is a front view of the brake device according to the first embodiment.
  • the upward direction on the paper is the upward direction of the brake device 9.
  • the right direction of the drawing is the right direction of the brake device 9.
  • the exciting coil 22 When the brake device 9 is released, the exciting coil 22 is energized.
  • the exciting coil 22 generates a magnetic field.
  • the magnetic field generated by the exciting coil 22 generates an attractive force between the movable iron core of the plunger 18 and the fixed iron core 19.
  • the plunger 18 moves downward by the attractive force generated between the movable iron core and the fixed iron core 19.
  • Each of the upper bush 20 and the lower bush 21 guides the plunger 18.
  • the plunger 18 moves to the lower position.
  • the turntable 25 follows the plunger 18 and moves downward.
  • the upper bush 20 guides the movement of the plunger 18 in the axial direction.
  • the lower bush 21 guides the movement of the plunger 18 in the axial direction.
  • the lower end of the plunger 18 pushes the opposite end of each lever pin 17 of the pair of levers 14 downward.
  • the right lever 14 pushes the right arm 11 to the right while resisting the elastic force of the right spring 13.
  • the left lever 14 pushes the left arm 11 to the left while resisting the elastic force of the left spring 13.
  • Each of the pair of linings 12 is separated from the outer peripheral surface of the brake drum 10. At this time, the rotation of the brake drum 10 is not suppressed.
  • the rotation of the sheave of the hoisting machine 6 that rotates in synchronization with the brake drum 10 is not suppressed.
  • FIGS. 4 to 8. are front views of the operation unit according to the first embodiment.
  • a marker M indicating the rotational position of the turntable 25 is shown.
  • the upward direction in the drawing is the upward direction of the brake device 9.
  • the right direction in the drawing is the right direction of the brake device 9.
  • FIG. 4 the state at the time of braking is shown.
  • the plunger 18 is located at the upper position in the axial direction.
  • Each of the plurality of upper contact portions 27a is in contact with each of the plurality of upper inclined surfaces 30a.
  • the lowermost portion of each of the plurality of lower contact portions 27b is shifted in the forward direction from the lowermost portion of each of the plurality of lower inclined surfaces 30b by a length A that is half the pitch of the plurality of lower inclined surfaces 30b.
  • Each of the plurality of lower contact portions 27b is separated from any of the plurality of lower inclined surfaces 30b.
  • the coaxiality may vary due to manufacturing errors of the plunger 18 or the like.
  • the radial gap between the plunger 18 and the inner surface of the case 23 is biased. That is, the width of the gap B may be different from the width of the gap C.
  • FIG. 5 the state of switching from braking to release is shown.
  • the plunger 18 moves downward from the upper position in the axial direction.
  • the turntable 25 follows the plunger 18 and moves downward.
  • Each of the plurality of upper contact portions 27a is separated from the upper inclined surface 30a that has been in contact.
  • the plunger 18 moves to the lower position in the axial direction.
  • the turntable 25 follows the plunger 18 and moves downward.
  • Each of the plurality of upper contact portions 27a is separated from any of the plurality of upper inclined surfaces 30a.
  • Each of the plurality of lower contact portions 27b moves downward while the lower sliding surface 28b is in contact with each of the plurality of lower inclined surfaces 30b.
  • Each of the plurality of lower contact portions 27b receives a force in the forward direction from the lower inclined surface 30b in contact.
  • the lower sliding surface 28b slides along the contacting lower inclined surface 30b.
  • the turntable 25 rotates in the forward direction by a half of the pitch in which the plurality of lower inclined surfaces 30b are arranged by the force.
  • the turntable 25 rotates the plunger 18 in conjunction with it.
  • each of the plurality of lower contact portions 27b is in contact with each of the plurality of lower inclined surfaces 30b.
  • the uppermost portion of each of the plurality of upper contact portions 27a is displaced in the forward direction from the uppermost portion of each of the plurality of upper inclined surfaces 30a by half the pitch in which the plurality of upper inclined surfaces 30a are arranged.
  • Each of the plurality of upper contact portions 27a is separated from any of the plurality of upper inclined surfaces 30a.
  • FIG. 7 the state of switching from release to braking is shown.
  • the plunger 18 moves upward from the lower position in the axial direction.
  • the turntable 25 follows the plunger 18 and moves downward.
  • Each of the plurality of upper contact portions 27a is separated from the upper inclined surface 30a that has been in contact.
  • the plunger 18 moves to the lower position in the axial direction.
  • the turntable 25 follows the plunger 18 and moves upward.
  • Each of the plurality of lower contact portions 27b is separated from any of the plurality of lower inclined surfaces 30b.
  • Each of the plurality of upper contact portions 27a moves upward while the upper sliding surface 28a is in contact with each of the plurality of upper inclined surfaces 30a.
  • Each of the plurality of upper contact portions 27a receives a force in the forward direction from the upper inclined surface 30a that is in contact.
  • the upper sliding surface 28a slides along the contacting upper inclined surface 30a.
  • the turntable 25 rotates in the forward direction by a half of the pitch in which the plurality of upper inclined surfaces 30a are arranged by the force.
  • the turntable 25 rotates the plunger 18 in conjunction with it.
  • each of the plurality of upper contact portions 27a is in contact with each of the plurality of upper inclined surfaces 30a.
  • the lowermost portion of each of the plurality of lower contact portions 27b is shifted in the forward direction from the lowermost portion of each of the plurality of lower inclined surfaces 30b by half the pitch in which the plurality of lower inclined surfaces 30b are arranged.
  • Each of the plurality of lower contact portions 27b is separated from any of the plurality of lower inclined surfaces 30b.
  • the turntable 25 rotates in the forward direction from the state of FIG. 4 by a pitch in which the plurality of upper inclined surfaces 30a are arranged.
  • the plunger 18 rotates in the forward direction by the pitch from the state of FIG. That is, the fixed body 26 rotates the plunger 18 in the forward direction by the pitch through the rotating plate 25 when the plunger 18 reciprocates once between the upper position and the lower position.
  • the brake device 9 includes the plunger 18, the upper bush 20, the lower bush 21, and the rotation mechanism 24.
  • the plunger 18 moves up and down in the axial direction by moving to the lower position in the axial direction.
  • the plunger 18 moves to the upper position in the axial direction when braking the elevator car 4.
  • the inner surface of the upper bush 20 contacts the outer surface of the plunger 18.
  • the inner surface of the lower bush 21 is in contact with the outer surface of the plunger 18.
  • Each of the upper bush 20 and the lower bush 21 guides the movement of the plunger 18 in the axial direction.
  • the rotation mechanism 24 rotates the plunger 18 in the forward direction.
  • Each of the upper bush 20 and the lower bush 21 is biased and is less likely to wear, so that the life of each of the upper bush 20 and the lower bush 21 is extended.
  • the brake device 9 includes an exciting coil 22.
  • the exciting coil 22 is provided outside each of the upper bush 20 and the lower bush 21. The exciting coil 22 moves the plunger 18 to the lower position by the generated magnetic field.
  • FIG. 9 is a top view of a main part of the brake device according to the first embodiment.
  • FIG. 10 is a front view of a main part of the brake device according to the first embodiment.
  • the plunger 18 may vary in coaxiality due to manufacturing errors and the like. At this time, the radial gap between the plunger 18 and the upper bush 20 is biased.
  • the plunger 18 Due to the distribution of the magnetic field inside the exciting coil 22, the plunger 18 is strongly pressed in a direction in which the radial gap between the plunger 18 and the upper bush 20 is narrow. A portion where the gap between the upper bush 20 and the plunger 18 is narrow guides the plunger 18 that is strongly pressed. At this time, the portion of the upper bush 20 is more easily worn than the other portions. If the plunger 18 does not rotate, the plunger 18 is repeatedly and strongly pressed against that portion of the upper bush 20. In this case, the portion of the upper bush 20 can be worn away. If the plunger 18 does not rotate when the upper bush 20 wears unevenly, the portion where the radial gap between the plunger 18 and the upper bush 20 is narrow is worn more unevenly by being strongly pressed. sell.
  • the rotation mechanism 24 rotates the plunger 18 in the forward direction.
  • the plunger 18 does not repeatedly contact the same part of the upper bush 20.
  • the inner surface of the upper bush 20 is less likely to be worn by being biased by contact with the plunger 18.
  • the inner side surface of the lower bush 21 is less likely to be worn by being biased by contact with the plunger 18. Further, an increase in sliding loss that occurs between the plunger 18 and the upper bush 20 and the lower bush 21 is suppressed.
  • a lubricant that reduces friction between the plunger 18 and the upper bush 20 and the lower bush 21 is not used. For this reason, the brake torque of the brake device 9 does not decrease when the lubricant falls between the brake drum 10 and the lining 12.
  • the rotating mechanism 24 includes a rotating disk 25 and a fixed body 26.
  • the turntable 25 is provided at the end of the plunger 18 in the axial direction.
  • the turntable 25 moves in the axial direction following the plunger 18.
  • the turntable 25 rotates the plunger 18 in conjunction with the axial direction.
  • the fixed body 26 rotates the plunger 18 in the forward direction via the turntable 25.
  • the plunger 18 does not need a structure for rotation such as a groove on the outer surface.
  • the outer surface of the plunger 18 can contact the upper bush 20 and the lower bush 21.
  • wear of the upper bush 20 and the lower bush 21 is not advanced.
  • the size of the operating portion 15 does not increase in the radial direction.
  • the fixed body 26 includes a lower fixed platen 29b and an upper fixed platen 29a.
  • the lower fixed platen 29b faces the lower side that is one side of the rotary platen 25 in the axial direction.
  • the lower fixed platen 29b rotates the turntable 25 in the forward direction when the plunger 18 moves to the lower position.
  • the upper fixed plate 29a faces the upper side, which is the other side of the rotary plate 25, in the axial direction.
  • the upper fixed platen 29a rotates the turntable 25 in the forward direction when the plunger 18 moves to the upper position.
  • the plunger 18 alternately repeats the downward movement and the upward movement by opening and braking the brake device 9.
  • the fixed body 26 rotates the plunger 18 in the forward direction both when the plunger 18 moves downward and when the plunger 18 moves upward. Thereby, the same location does not contact the plunger 18 and the upper bush 20 continuously in the movement of the plunger 18 in the axial direction.
  • the plunger 18 and the lower bush 21 do not come into contact with each other continuously in the axial movement of the plunger 18. For this reason, the inner surface of the upper bush 20 is less likely to be worn by being biased by contact with the plunger 18. Similarly, the inner side surface of the lower bush 21 is less likely to be worn by being biased by contact with the plunger 18.
  • the turntable 25 includes a lower contact portion 27b and an upper contact portion 27a.
  • the lower contact portion 27b is provided on the side facing the lower fixed platen 29b.
  • the upper contact portion 27a is provided on the side facing the upper fixed platen 29a.
  • the lower fixed platen 29b has a plurality of lower inclined surfaces 30b.
  • Each of the plurality of lower inclined surfaces 30 b is inclined in the same direction in the rotation direction of the rotating disk 25.
  • the plurality of lower inclined surfaces 30b are arranged in an annular shape on the side facing the rotating disk. The plurality of lower inclined surfaces 30b come into contact with the lower contact portion 27b when the plunger 18 moves to the lower position, and rotate the turntable 25 in the forward direction.
  • the upper fixed platen 29a has a plurality of upper inclined surfaces 30a.
  • Each of the plurality of upper inclined surfaces 30 a is inclined in the same direction in the rotation direction of the turntable 25.
  • the plurality of upper inclined surfaces 30a are arranged in an annular shape on the side facing the rotating disk. When the plunger 18 moves to the upper position, the plurality of upper inclined surfaces 30a come into contact with the upper contact portion 27a and rotate the turntable 25 in the forward direction.
  • the lower inclined surface 30b converts the downward movement of the plunger 18 in the axial direction into a forward rotational movement.
  • the upper inclined surface 30a converts the upward movement of the plunger 18 in the axial direction into a forward rotational movement. Thereby, the rotation mechanism 24 does not require additional power for rotating the plunger 18.
  • the plurality of lower inclined surfaces 30b are arranged in an annular shape at a constant pitch.
  • the plurality of upper inclined surfaces 30a are arranged in an annular shape at the pitch.
  • Each of the plurality of lower inclined surfaces 30b is shifted in the forward direction by a half of the pitch from each of the plurality of upper inclined surfaces 30a on the projection plane perpendicular to the axial direction.
  • each of the plurality of lower inclined surfaces 30b is shifted in the forward direction by half of the pitch from each of the plurality of upper inclined surfaces 30a.
  • the fixed body 26 can rotate the rotary disk 25 in the forward direction by at least one of the lower fixed disk 29b and the upper fixed disk 29a at any rotation position of the rotary disk 25.
  • the plunger 18 is reliably rotated by the movement in the axial direction.
  • the plunger 18 rotates by half of the pitch.
  • the brake device 9 includes a case 23.
  • the case 23 accommodates the plunger 18, the upper bush 20, and the lower bush 21.
  • the rotation mechanism 24 is provided outside the case 23.
  • the rotation mechanism 24 can be easily added from the outside. For this reason, the rotation mechanism 24 can extend the lifetime of the existing brake device.
  • the number of the plurality of lower contact portions 27b may be smaller than the number of the plurality of lower inclined surfaces 30b.
  • the number of the plurality of upper contact portions 27a may be smaller than the number of the plurality of upper inclined surfaces 30a.
  • Each of the plurality of lower contact portions 27b may be a rib.
  • Each of the plurality of upper contact portions 27a may be a rib.
  • Each of the plurality of lower inclined surfaces 30b may be curved and inclined.
  • Each of the plurality of upper inclined surfaces 30a may be curved and inclined.
  • Each of the plurality of lower contact portions 27b may be displaced in the forward direction by half of the pitch from each of the plurality of upper contact portions 27a on the projection plane perpendicular to the axial direction. At this time, each of the plurality of lower inclined surfaces 30b overlaps one of the plurality of upper inclined surfaces 30a on the projection plane perpendicular to the axial direction.
  • the brake device according to the present invention can be applied to an elevator.

Abstract

The purpose of the present invention is to provide a brake device (9) for an elevator (1), wherein bushes (5, 6) are not easily biased and worn. A plunger (18) moves to a lower position in the axial direction thereof, thereby releasing the raising and lowering of a car (4). The plunger (18) moves to an upper position in the axial direction when braking the raising and lowering of the car (4). The bushes (5, 6) guide the movement of the plunger (18) in the axial direction. A rotating mechanism (24) causes the plunger (18) to rotate in the forward direction when the plunger (18) moves between the lower position and the upper position.

Description

エレベーターのブレーキ装置Elevator brake equipment
　本発明は、エレベーターのブレーキ装置に関する。 The present invention relates to an elevator brake device.
　特許文献１にエレベーターのブレーキ装置の例が記載されている。ブレーキ装置は、ブッシュと、プランジャーと、を備える。ブッシュは、プランジャーの外周側の全周に設けられる。プランジャーは、ブッシュにガイドされてレバーを押すことで、ライニングをブレーキドラムに押し付ける。 Patent Document 1 describes an example of an elevator brake device. The brake device includes a bush and a plunger. A bush is provided in the perimeter of the outer peripheral side of a plunger. The plunger is guided by the bush and presses the lever to press the lining against the brake drum.
日本特開昭５６－６６５３０号公報Japanese Unexamined Patent Publication No. 56-66530
　しかしながら、特許文献１に記載のブレーキ装置において、ブッシュは、プランジャーをガイドするときにプランジャーの同じ箇所に繰り返し接触する。これにより、ブッシュが偏って磨耗しやすい。 However, in the brake device described in Patent Document 1, the bush repeatedly contacts the same portion of the plunger when guiding the plunger. Thereby, the bush is biased and easily worn.
　本発明は、このような課題を解決するためになされた。本発明の目的は、ブッシュが偏って磨耗しにくいエレベーターのブレーキ装置を提供することである。 The present invention has been made to solve such problems. The objective of this invention is providing the brake device of the elevator which a bush is biased and is hard to wear.
　本発明に係るブレーキ装置は、軸方向の第１位置に移動することでかごの昇降を解放し、かごの昇降の制動時に軸方向の第２位置に移動するプランジャーと、内側面がプランジャーの外側面に接触し、プランジャーの軸方向の移動をガイドするブッシュと、プランジャーが第１位置および第２位置の間を移動するときにプランジャーを順方向に回転させる回転機構と、を備える。 A brake device according to the present invention releases a car ascending / descending by moving to a first position in the axial direction, and moves to a second position in the axial direction when braking the car ascending / descending, and an inner surface is a plunger. A bush for contacting the outer surface of the plunger and guiding the axial movement of the plunger, and a rotating mechanism for rotating the plunger forward when the plunger moves between the first position and the second position. Prepare.
　本発明によれば、プランジャーは、軸方向の第１位置に移動することでかごの昇降を解放する。プランジャーは、かごの昇降の制動時に軸方向の第２位置に移動する。ブッシュは、プランジャーの軸方向の移動をガイドする。回転機構は、プランジャーが第１位置および第２位置の間を移動するときにプランジャーを順方向に回転させる。これにより、ブレーキ装置のブッシュは、偏って磨耗しにくくなる。 According to the present invention, the plunger releases the elevator from moving up and down by moving to the first axial position. The plunger moves to the second axial position during braking of the car. The bush guides the axial movement of the plunger. The rotation mechanism rotates the plunger in the forward direction when the plunger moves between the first position and the second position. Thereby, the bush of a brake device becomes difficult to wear unevenly.
実施の形態１に係るエレベーターの構成図である。1 is a configuration diagram of an elevator according to Embodiment 1. FIG. 実施の形態１に係るブレーキ装置の正面図である。1 is a front view of a brake device according to Embodiment 1. FIG. 実施の形態１に係るブレーキ装置の正面図である。1 is a front view of a brake device according to Embodiment 1. FIG. 実施の形態１に係る作動部の正面図である。3 is a front view of an operation unit according to Embodiment 1. FIG. 実施の形態１に係る作動部の正面図である。3 is a front view of an operation unit according to Embodiment 1. FIG. 実施の形態１に係る作動部の正面図である。3 is a front view of an operation unit according to Embodiment 1. FIG. 実施の形態１に係る作動部の正面図である。3 is a front view of an operation unit according to Embodiment 1. FIG. 実施の形態１に係る作動部の正面図である。3 is a front view of an operation unit according to Embodiment 1. FIG. 実施の形態１に係るブレーキ装置の要部の上面図である。FIG. 3 is a top view of the main part of the brake device according to the first embodiment. 実施の形態１に係るブレーキ装置の要部の正面図である。FIG. 3 is a front view of a main part of the brake device according to the first embodiment.
　本発明を実施するための形態について添付の図面を参照しながら説明する。各図において、同一または相当する部分には同一の符号を付して、重複する説明は適宜に簡略化または省略する。 DETAILED DESCRIPTION Embodiments for carrying out the present invention will be described with reference to the accompanying drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and overlapping descriptions are simplified or omitted as appropriate.
　実施の形態１．
　図１は、実施の形態１に係るエレベーターの構成図である。 Embodiment 1 FIG.
FIG. 1 is a configuration diagram of an elevator according to the first embodiment.
　図１において、エレベーター１が設けられる建築物は、複数の階を有する。昇降路２は、建築物の各階を貫く。複数の乗場の各々は、建築物の各階に設けられる。複数の乗場の各々は、昇降路２に対向する。機械室３は、昇降路２の上部に設けられる。 In FIG. 1, the building where the elevator 1 is provided has a plurality of floors. The hoistway 2 penetrates each floor of the building. Each of the multiple halls is provided on each floor of the building. Each of the plurality of halls faces the hoistway 2. The machine room 3 is provided in the upper part of the hoistway 2.
　エレベーター１は、かご４と、おもり５と、巻上機６と、そらせ車７と、主ロープ８と、ブレーキ装置９と、を備える。 The elevator 1 includes a car 4, a weight 5, a hoisting machine 6, a deflector 7, a main rope 8, and a brake device 9.
　かご４は、昇降路２の内部において図示されないガイドレールに沿って昇降しうるように設けられる。 The car 4 is provided inside the hoistway 2 so that it can be raised and lowered along a guide rail (not shown).
　おもり５は、昇降路２の内部において図示されないガイドレールに沿って昇降しうるように設けられる。 The weight 5 is provided inside the hoistway 2 so that it can be raised and lowered along a guide rail (not shown).
　巻上機６は、機械室３に設けられる。巻上機６は、モーターと、シーブと、を備える。巻上機６のモーターは、巻上機６のシーブを回転駆動する装置である。そらせ車７は、機械室３に設けられる。そらせ車７は、シーブである。 The hoisting machine 6 is provided in the machine room 3. The hoisting machine 6 includes a motor and a sheave. The motor of the hoisting machine 6 is a device that rotationally drives the sheave of the hoisting machine 6. The deflecting wheel 7 is provided in the machine room 3. The deflecting wheel 7 is a sheave.
　主ロープ８は、巻上機６のシーブに巻き掛けられる。主ロープ８は、そらせ車７に巻き掛けられる。主ロープ８の一端は、かご４に保持される。主ロープ８の他端は、おもり５に保持される。 The main rope 8 is wound around the sheave of the hoisting machine 6. The main rope 8 is wound around the baffle wheel 7. One end of the main rope 8 is held by the car 4. The other end of the main rope 8 is held by the weight 5.
　ブレーキ装置９は、かご４の昇降を制動する装置である。 The brake device 9 is a device that brakes the raising and lowering of the car 4.
　エレベーター１の運転において、主ロープ８は、巻上機６のモーターに駆動されて移動する。このとき、ブレーキ装置９は、巻上機６のシーブの回転を解放する。かご４は、主ロープ８の移動に追従して昇降する。おもり５は、主ロープ８の移動に追従して昇降する。かご４は、乗場が設けられる階に停止する。かご４が停止しているときに、ブレーキ装置９は、巻上機６のシーブの回転を制動する。これにより、かご４の昇降は制動される。エレベーター１の利用者は、乗場からかご４に乗車する。あるいは、エレベーター１の利用者は、かご４から乗場に降車する。 In the operation of the elevator 1, the main rope 8 is driven by the motor of the hoisting machine 6 and moves. At this time, the brake device 9 releases the rotation of the sheave of the hoisting machine 6. The car 4 moves up and down following the movement of the main rope 8. The weight 5 moves up and down following the movement of the main rope 8. The car 4 stops on the floor where the landing is provided. When the car 4 is stopped, the brake device 9 brakes the rotation of the sheave of the hoisting machine 6. Thereby, the raising / lowering of the cage | basket | car 4 is braked. A user of the elevator 1 gets on the car 4 from the landing. Alternatively, the user of the elevator 1 gets off from the car 4 to the landing.
　続いて、図２を用いてブレーキ装置９の構成を説明する。
　図２は、実施の形態１に係るブレーキ装置の正面図である。 Then, the structure of the brake device 9 is demonstrated using FIG.
FIG. 2 is a front view of the brake device according to the first embodiment.
　図２において、ブレーキ装置９が巻上機６のシーブの回転を抑制している状態が示される。図２において、紙面上方向がブレーキ装置９の上方向である。紙面右方向がブレーキ装置９の右方向である。 FIG. 2 shows a state in which the brake device 9 suppresses the rotation of the sheave of the hoisting machine 6. In FIG. 2, the upward direction on the paper is the upward direction of the brake device 9. The right direction of the drawing is the right direction of the brake device 9.
　ブレーキ装置９は、ブレーキドラム１０と、一対のアーム１１と、一対のライニング１２と、一対のバネ１３と、一対のレバー１４と、作動部１５と、を備える。 The brake device 9 includes a brake drum 10, a pair of arms 11, a pair of linings 12, a pair of springs 13, a pair of levers 14, and an operating unit 15.
　ブレーキドラム１０は、巻上機６のシーブと同期して回転する部材である。ブレーキドラム１０は、円盤状の形状である。 The brake drum 10 is a member that rotates in synchronization with the sheave of the hoisting machine 6. The brake drum 10 has a disk shape.
　一対のアーム１１の一方は、ブレーキドラム１０より右側に設けられる。一対のアーム１１の他方は、ブレーキドラム１０より左側に設けられる。一対のアーム１１の各々は、アームピン１６を備える。アームピン１６は、アーム１１の下端に設けられる。一対のアーム１１の各々は、アームピン１６を軸として回転することでブレーキドラム１０に対して開閉ができるように設けられる。 One of the pair of arms 11 is provided on the right side of the brake drum 10. The other of the pair of arms 11 is provided on the left side of the brake drum 10. Each of the pair of arms 11 includes an arm pin 16. The arm pin 16 is provided at the lower end of the arm 11. Each of the pair of arms 11 is provided so that it can be opened and closed with respect to the brake drum 10 by rotating around the arm pin 16.
　一対のライニング１２の一方は、右側のアーム１１に設けられる。一対のライニング１２の他方は、左側のアーム１１に設けられる。一対のライニング１２の各々は、ブレーキドラム１０の外周面に対向する。 One of the pair of linings 12 is provided on the right arm 11. The other of the pair of linings 12 is provided on the left arm 11. Each of the pair of linings 12 faces the outer peripheral surface of the brake drum 10.
　一対のバネ１３の各々は、一対のアーム１１の各々のアームピン１６と反対側の端部に設けられる。一対のバネ１３の一方は、右側のアーム１１をブレーキドラム１０に向けて押すように圧縮して設けられる。一対のバネ１３の他方は、左側のアーム１１をブレーキドラム１０に向けて押すように圧縮して設けられる。 Each of the pair of springs 13 is provided at the end of each of the pair of arms 11 opposite to the arm pin 16. One of the pair of springs 13 is provided to be compressed so as to push the right arm 11 toward the brake drum 10. The other of the pair of springs 13 is provided by being compressed so as to push the left arm 11 toward the brake drum 10.
　一対のレバー１４の一方は、ブレーキ装置９の右側に設けられる。一対のレバー１４の他方は、ブレーキ装置９の左側に設けられる。一対のレバー１４の各々は、ブレーキドラム１０より上側に設けられる。一対のレバー１４の各々は、レバーピン１７を備える。右側のレバー１４のレバーピン１７は、当該レバー１４の右端に設けられる。左側のレバー１４のレバーピン１７は、当該レバー１４の左端に設けられる。一対のレバー１４の各々は、レバーピン１７を軸として回転可能に設けられる。右側のレバー１４は、回転によって右側のアーム１１を右側に開くように当該アーム１１に接触する。左側のレバー１４は、回転によって左側のアーム１１を左側に開くように当該アーム１１に接触する。 One of the pair of levers 14 is provided on the right side of the brake device 9. The other of the pair of levers 14 is provided on the left side of the brake device 9. Each of the pair of levers 14 is provided above the brake drum 10. Each of the pair of levers 14 includes a lever pin 17. The lever pin 17 of the right lever 14 is provided at the right end of the lever 14. The lever pin 17 of the left lever 14 is provided at the left end of the lever 14. Each of the pair of levers 14 is provided to be rotatable about a lever pin 17 as an axis. The right lever 14 contacts the arm 11 so as to open the right arm 11 to the right by rotation. The left lever 14 contacts the arm 11 so as to open the left arm 11 to the left by rotation.
　作動部１５は、ブレーキ装置９の上部に設けられる。作動部１５は、プランジャー１８と、固定鉄心１９と、上部ブッシュ２０と、下部ブッシュ２１と、励磁コイル２２と、ケース２３と、回転機構２４と、を備える。 The operating unit 15 is provided on the upper part of the brake device 9. The operating unit 15 includes a plunger 18, a fixed iron core 19, an upper bush 20, a lower bush 21, an excitation coil 22, a case 23, and a rotation mechanism 24.
　プランジャー１８は、上下方向を軸方向として回転対象な形状である。プランジャー１８の下部は、プランジャー１８の上部より細い。プランジャー１８は、可動鉄心を上部に備える。プランジャー１８の下部は、一対のレバー１４の各々のレバーピン１７と反対側の端部に接触する。図２において、プランジャー１８は、上部位置に位置している。上部位置は、第２位置の例である。プランジャー１８は、下部位置まで移動可能に設けられる。下部位置は、軸方向において上部位置より下方の位置である。下部位置は、第１位置の例である。 The plunger 18 has a shape to be rotated with the vertical direction as the axial direction. The lower part of the plunger 18 is thinner than the upper part of the plunger 18. The plunger 18 includes a movable iron core at the top. The lower part of the plunger 18 is in contact with the end of each of the pair of levers 14 opposite to the lever pin 17. In FIG. 2, the plunger 18 is located at the upper position. The upper position is an example of the second position. The plunger 18 is provided so as to be movable to a lower position. The lower position is a position below the upper position in the axial direction. The lower position is an example of the first position.
　固定鉄心１９は、円筒状の形状である。固定鉄心１９の中心軸は、プランジャー１８の同軸上に設けられる。固定鉄心１９は、プランジャー１８の下部の外周側に設けられる。 The fixed iron core 19 has a cylindrical shape. The central axis of the fixed iron core 19 is provided on the same axis as the plunger 18. The fixed iron core 19 is provided on the outer peripheral side of the lower portion of the plunger 18.
　上部ブッシュ２０は、円筒状の形状である。上部ブッシュ２０の中心軸は、プランジャー１８の同軸上に設けられる。上部ブッシュ２０は、プランジャー１８の軸方向の移動をガイドしうるように、プランジャー１８の上部の外周側に設けられる。上部ブッシュ２０の内側面は、プランジャー１８の外側面に接触する。 The upper bush 20 has a cylindrical shape. The central axis of the upper bush 20 is provided on the same axis as the plunger 18. The upper bush 20 is provided on the outer peripheral side of the upper portion of the plunger 18 so as to guide the movement of the plunger 18 in the axial direction. The inner surface of the upper bush 20 contacts the outer surface of the plunger 18.
　下部ブッシュ２１は、円筒状の形状である。下部ブッシュ２１の中心軸は、プランジャー１８の同軸上に設けられる。下部ブッシュ２１は、プランジャー１８の軸方向の移動をガイドしうるように、プランジャー１８の下部の外周側に設けられる。下部ブッシュ２１の内側面は、プランジャー１８の外側面に接触する。 The lower bush 21 has a cylindrical shape. The central axis of the lower bush 21 is provided on the same axis as the plunger 18. The lower bush 21 is provided on the outer peripheral side of the lower portion of the plunger 18 so that the axial movement of the plunger 18 can be guided. The inner surface of the lower bush 21 is in contact with the outer surface of the plunger 18.
　励磁コイル２２は、通電によって磁場を発生させる装置である。励磁コイル２２は、円筒状の形状である。励磁コイル２２の中心軸は、プランジャー１８の同軸上に設けられる。励磁コイル２２は、固定鉄心１９の外周側に設けられる。励磁コイル２２は、上部ブッシュ２０の外周側に設けられる。励磁コイル２２は、下部ブッシュ２１の外周側に設けられる。 The exciting coil 22 is a device that generates a magnetic field when energized. The exciting coil 22 has a cylindrical shape. The central axis of the exciting coil 22 is provided on the same axis as the plunger 18. The exciting coil 22 is provided on the outer peripheral side of the fixed iron core 19. The exciting coil 22 is provided on the outer peripheral side of the upper bush 20. The exciting coil 22 is provided on the outer peripheral side of the lower bush 21.
　ケース２３は、上下方向を軸方向として回転対象な形状である。ケース２３は、上端に開口を有する。ケース２３の中心軸は、プランジャー１８の同軸上に設けられる。ケース２３は、プランジャー１８、固定鉄心１９、上部ブッシュ２０、下部ブッシュ２１および励磁コイル２２を収納する。 The case 23 has a shape to be rotated with the vertical direction as the axial direction. The case 23 has an opening at the upper end. The central axis of the case 23 is provided on the same axis as the plunger 18. The case 23 accommodates the plunger 18, the fixed iron core 19, the upper bush 20, the lower bush 21, and the exciting coil 22.
　回転機構２４は、ケース２３の外部の上端に設けられる。回転機構２４は、回転盤２５と、固定体２６と、を備える。 The rotation mechanism 24 is provided at the upper end outside the case 23. The rotation mechanism 24 includes a turntable 25 and a fixed body 26.
　ここで、順方向は、上方向から見て反時計まわりの回転方向である。 Here, the forward direction is the counterclockwise direction of rotation when viewed from above.
　回転盤２５は、円盤状の形状である。回転盤２５は、プランジャー１８の上端に連結される。回転盤２５の中心軸は、プランジャー１８の中心軸と同軸上に設けられる。回転盤２５は、回転体の例である。回転盤２５は、複数の上部接触部２７ａと、複数の下部接触部２７ｂと、を備える。 The turntable 25 has a disk shape. The turntable 25 is connected to the upper end of the plunger 18. The central axis of the turntable 25 is provided coaxially with the central axis of the plunger 18. The turntable 25 is an example of a rotating body. The turntable 25 includes a plurality of upper contact portions 27a and a plurality of lower contact portions 27b.
　複数の上部接触部２７ａは、回転盤２５の上面の周縁部に設けられる。複数の上部接触部２７ａは、一定のピッチで円環状に並ぶ。複数の上部接触部２７ａの全体は、鋸歯状の形状である。複数の上部接触部２７ａの各々は、第２接触部の例である。複数の上部接触部２７ａの各々は、上部摺動面２８ａを有する。上部摺動面２８ａの法線は、回転盤２５の回転方向において順方向の逆方向に傾く。 The plurality of upper contact portions 27 a are provided on the peripheral edge portion of the upper surface of the rotating disk 25. The plurality of upper contact portions 27a are arranged in an annular shape at a constant pitch. The whole of the plurality of upper contact portions 27a has a sawtooth shape. Each of the plurality of upper contact portions 27a is an example of a second contact portion. Each of the plurality of upper contact portions 27a has an upper sliding surface 28a. The normal line of the upper sliding surface 28 a is inclined in the reverse direction of the forward direction in the rotation direction of the rotating disk 25.
　複数の下部接触部２７ｂは、回転盤２５の下面の周縁部に設けられる。複数の下部接触部２７ｂは、一定のピッチで円環状に並ぶ。複数の下部接触部２７ｂの全体は、鋸歯状の形状である。複数の下部接触部２７ｂが並ぶピッチは、複数の上部接触部２７ａが並ぶピッチに等しい。複数の下部接触部２７ｂの各々は、第１接触部の例である。複数の下部接触部２７ｂの各々は、下部摺動面２８ｂを有する。下部摺動面２８ｂの法線は、回転盤２５の回転方向において順方向の逆方向に傾く。 The plurality of lower contact portions 27b are provided on the peripheral edge portion of the lower surface of the turntable 25. The plurality of lower contact portions 27b are arranged in an annular shape at a constant pitch. The whole of the plurality of lower contact portions 27b has a sawtooth shape. The pitch at which the plurality of lower contact portions 27b are arranged is equal to the pitch at which the plurality of upper contact portions 27a are arranged. Each of the plurality of lower contact portions 27b is an example of a first contact portion. Each of the plurality of lower contact portions 27b has a lower sliding surface 28b. The normal line of the lower sliding surface 28 b is inclined in the reverse direction of the forward direction in the rotation direction of the rotating disk 25.
　複数の上部接触部２７ａの各々は、軸方向に垂直な投影面上において、複数の下部接触部２７ｂのいずれかに重なっている。複数の下部接触部２７ｂの各々は、軸方向に垂直な投影面上において、複数の上部接触部２７ａのいずれかに重なっている。複数の下部接触部２７ｂは、複数の上部接触部２７ａと、軸方向に垂直な平面に関して面対称である。 Each of the plurality of upper contact portions 27a overlaps one of the plurality of lower contact portions 27b on the projection plane perpendicular to the axial direction. Each of the plurality of lower contact portions 27b overlaps one of the plurality of upper contact portions 27a on the projection plane perpendicular to the axial direction. The plurality of lower contact portions 27b are plane-symmetric with respect to the plurality of upper contact portions 27a with respect to a plane perpendicular to the axial direction.
　固定体２６は、上部固定盤２９ａと、下部固定盤２９ｂと、を備える。固定体２６は、回転盤２５を介してプランジャー１８を順方向に回転させる部分である。 The fixed body 26 includes an upper fixed platen 29a and a lower fixed platen 29b. The fixed body 26 is a part that rotates the plunger 18 in the forward direction via the turntable 25.
　上部固定盤２９ａは、円盤状の形状である。上部固定盤２９ａは、回転盤２５の上方に設けられる。上部固定盤２９ａは、回転盤２５の上面に対向する。上部固定盤２９ａの中心軸は、プランジャー１８の中心軸と同軸上に設けられる。上部固定盤２９ａは、ケース２３に対して固定される。上部固定盤２９ａは、第２固定体の例である。上部固定盤２９ａは、複数の上部傾斜面３０ａを有する。複数の上部傾斜面３０ａは、上部固定盤２９ａの下面の周縁部に設けられる。複数の上部傾斜面３０ａは、一定のピッチで円環状に並ぶ。複数の上部傾斜面３０ａが並ぶピッチは、複数の上部接触部２７ａが並ぶピッチに等しい。複数の上部傾斜面３０ａの各々の法線は、回転盤２５の回転方向において順方向に傾く。複数の上部傾斜面３０ａの各々は、複数の上部接触部２７ａのいずれかの上部摺動面２８ａに平行である。複数の上部傾斜面３０ａの各々は、第２傾斜面の例である。 The upper fixed platen 29a has a disk shape. The upper fixed platen 29a is provided above the rotating platen 25. The upper fixed platen 29 a faces the upper surface of the rotating plate 25. The central axis of the upper fixed plate 29 a is provided coaxially with the central axis of the plunger 18. The upper fixed plate 29 a is fixed to the case 23. The upper fixed platen 29a is an example of a second fixed body. The upper fixed platen 29a has a plurality of upper inclined surfaces 30a. The plurality of upper inclined surfaces 30a are provided on the peripheral edge of the lower surface of the upper fixed platen 29a. The plurality of upper inclined surfaces 30a are arranged in an annular shape at a constant pitch. The pitch at which the plurality of upper inclined surfaces 30a are arranged is equal to the pitch at which the plurality of upper contact portions 27a are arranged. Each normal line of the plurality of upper inclined surfaces 30 a is inclined in the forward direction in the rotation direction of the turntable 25. Each of the plurality of upper inclined surfaces 30a is parallel to one of the upper sliding surfaces 28a of the plurality of upper contact portions 27a. Each of the plurality of upper inclined surfaces 30a is an example of a second inclined surface.
　下部固定盤２９ｂは、円盤状の形状である。下部固定盤２９ｂは、回転盤２５の下方に設けられる。下部固定盤２９ｂは、回転盤２５の下面に対向する。下部固定盤２９ｂの中心軸は、プランジャー１８の中心軸と同軸上に設けられる。下部固定盤２９ｂは、ケース２３に対して固定される。下部固定盤２９ｂは、第１固定体の例である。下部固定盤２９ｂは、複数の下部傾斜面３０ｂを有する。複数の下部傾斜面３０ｂは、下部固定盤２９ｂの上面の周縁部に設けられる。複数の下部傾斜面３０ｂは、一定のピッチで円環状に並ぶ。複数の下部傾斜面３０ｂが並ぶピッチは、複数の下部接触部２７ｂが並ぶピッチに等しい。複数の下部傾斜面３０ｂの各々の法線は、回転盤２５の回転方向において順方向に傾く。複数の下部傾斜面３０ｂの各々は、複数の下部接触部２７ｂのいずれかの下部摺動面２８ｂに平行である。複数の下部傾斜面３０ｂの各々は、第１傾斜面の例である。 The lower fixed plate 29b has a disk shape. The lower fixed platen 29 b is provided below the rotary platen 25. The lower fixed platen 29 b faces the lower surface of the rotating plate 25. The central axis of the lower fixed plate 29 b is provided coaxially with the central axis of the plunger 18. The lower fixed platen 29 b is fixed to the case 23. The lower fixed platen 29b is an example of a first fixed body. The lower fixed platen 29b has a plurality of lower inclined surfaces 30b. The plurality of lower inclined surfaces 30b are provided on the periphery of the upper surface of the lower fixed platen 29b. The plurality of lower inclined surfaces 30b are arranged in an annular shape at a constant pitch. The pitch at which the plurality of lower inclined surfaces 30b are arranged is equal to the pitch at which the plurality of lower contact portions 27b are arranged. Each normal line of the plurality of lower inclined surfaces 30 b is inclined in the forward direction in the rotation direction of the rotating disk 25. Each of the plurality of lower inclined surfaces 30b is parallel to one of the lower sliding surfaces 28b of the plurality of lower contact portions 27b. Each of the plurality of lower inclined surfaces 30b is an example of a first inclined surface.
　複数の上部傾斜面３０ａの各々は、軸方向に垂直な投影面上において、複数の下部傾斜面３０ｂのいずれかから、複数の上部傾斜面３０ａが並ぶピッチの半分だけ順方向にずれている。複数の下部傾斜面３０ｂの各々は、軸方向に垂直な投影面上において、複数の上部傾斜面３０ａのいずれかから、複数の下部傾斜面３０ｂが並ぶピッチの半分だけ順方向にずれている。複数の下部傾斜面３０ｂは、複数の上部傾斜面３０ａと軸方向に垂直な平面に関して面対称な複数の面を、軸方向の回りに当該ピッチの半分だけ回転させたものに重なる。 Each of the plurality of upper inclined surfaces 30a is shifted in the forward direction from one of the plurality of lower inclined surfaces 30b on the projection plane perpendicular to the axial direction by a half of the pitch in which the plurality of upper inclined surfaces 30a are arranged. Each of the plurality of lower inclined surfaces 30b is shifted in the forward direction from one of the plurality of upper inclined surfaces 30a on the projection plane perpendicular to the axial direction by a half of the pitch in which the plurality of lower inclined surfaces 30b are arranged. The plurality of lower inclined surfaces 30b overlap the plurality of upper inclined surfaces 30a and a plurality of planes that are plane-symmetric with respect to a plane perpendicular to the axial direction, rotated about half the pitch around the axial direction.
　上部固定盤２９ａおよび下部固定盤２９ｂの間の軸方向のギャップは、プランジャー１８が上部位置に位置しているときに、回転盤２５の最下部が下部固定盤２９ｂの最上部を通る水平面の上方にあるように設けられる。当該ギャップは、プランジャー１８が下部位置に位置しているときに、回転盤２５の最上部が上部固定盤２９ａの最下部を通る水平面の下方にあるように設けられる。例えば、上部固定盤２９ａの最下部を通る水平面と下部固定盤２９ｂの最上部を通る水平面との間の距離は、回転盤２５の最上部から最下部までの厚みより広く設けられる。あるいは、当該距離は、回転盤２５の最上部から最下部までの厚みから、複数の上部接触部２７ａまたは複数の下部接触部２７ｂの高さの半分未満の距離を引いた距離であってもよい。 The axial gap between the upper fixed platen 29a and the lower fixed platen 29b is such that when the plunger 18 is located at the upper position, the lowermost part of the rotating plate 25 passes through the uppermost part of the lower fixed platen 29b. It is provided so that it exists in the upper part. The gap is provided such that when the plunger 18 is located at the lower position, the uppermost part of the rotating plate 25 is below the horizontal plane passing through the lowermost part of the upper fixed platen 29a. For example, the distance between the horizontal plane passing through the lowermost part of the upper fixed platen 29a and the horizontal plane passing through the uppermost part of the lower fixed platen 29b is set wider than the thickness from the uppermost part of the rotating platen 25 to the lowest part. Alternatively, the distance may be a distance obtained by subtracting a distance less than half of the height of the plurality of upper contact portions 27a or the plurality of lower contact portions 27b from the thickness from the top to the bottom of the turntable 25. .
　次に、ブレーキ装置９の動作を説明する。 Next, the operation of the brake device 9 will be described.
　引き続き図２を用いて、ブレーキ装置９の制動時の動作を説明する。 Next, the operation of the braking device 9 during braking will be described with reference to FIG.
　右側のバネ１３は、右側のアーム１１を左側に向けて押す。右側のライニング１２は、右側のアーム１１によってブレーキドラム１０の右側の外周面に押し付けられる。左側のバネ１３は、左側のアーム１１を右側に向けて押す。左側のライニング１２は、左側のアーム１１によってブレーキドラム１０の左側の外周面に押し付けられる。一対のライニング１２の各々は、ブレーキドラム１０の回転を摩擦によって抑制する。これにより、ブレーキドラム１０と同期して回転する巻上機６のシーブの回転が抑制される。 The right spring 13 pushes the right arm 11 toward the left side. The right lining 12 is pressed against the right outer peripheral surface of the brake drum 10 by the right arm 11. The left spring 13 pushes the left arm 11 toward the right side. The left lining 12 is pressed against the left outer peripheral surface of the brake drum 10 by the left arm 11. Each of the pair of linings 12 suppresses the rotation of the brake drum 10 by friction. Thereby, rotation of the sheave of the hoisting machine 6 that rotates in synchronization with the brake drum 10 is suppressed.
　このとき、励磁コイル２２は通電されない。右側のアーム１１は、右側のレバー１４を右側から押す。右側のレバー１４の左端は、上に上がる。左側のアーム１１は、左側のレバー１４を左側から押す。左側のレバー１４の右端は、上に上がる。プランジャー１８は、一対のレバー１４に持上げられる。上部ブッシュ２０および下部ブッシュ２１の各々は、プランジャー１８をガイドする。プランジャー１８は、上部位置に移動する。回転盤２５は、プランジャー１８に追従して上方に移動する。 At this time, the exciting coil 22 is not energized. The right arm 11 pushes the right lever 14 from the right side. The left end of the right lever 14 goes up. The left arm 11 pushes the left lever 14 from the left side. The right end of the left lever 14 goes up. The plunger 18 is lifted by the pair of levers 14. Each of the upper bush 20 and the lower bush 21 guides the plunger 18. The plunger 18 moves to the upper position. The turntable 25 follows the plunger 18 and moves upward.
　続いて、図３を用いてブレーキ装置９の解放時の動作を説明する。
　図３は、実施の形態１に係るブレーキ装置の正面図である。 Next, the operation when the brake device 9 is released will be described with reference to FIG.
FIG. 3 is a front view of the brake device according to the first embodiment.
　図３において、紙面上方向がブレーキ装置９の上方向である。紙面右方向がブレーキ装置９の右方向である。 3, the upward direction on the paper is the upward direction of the brake device 9. The right direction of the drawing is the right direction of the brake device 9.
　ブレーキ装置９の解放時において、励磁コイル２２は通電される。励磁コイル２２は、磁場を発生させる。励磁コイル２２が発生させる磁場は、プランジャー１８の可動鉄心と固定鉄心１９との間に引力を発生させる。プランジャー１８は、可動鉄心と固定鉄心１９との間に発生した引力によって、下方に移動する。上部ブッシュ２０および下部ブッシュ２１の各々は、プランジャー１８をガイドする。プランジャー１８は、下部位置に移動する。回転盤２５は、プランジャー１８に追従して下方に移動する。 When the brake device 9 is released, the exciting coil 22 is energized. The exciting coil 22 generates a magnetic field. The magnetic field generated by the exciting coil 22 generates an attractive force between the movable iron core of the plunger 18 and the fixed iron core 19. The plunger 18 moves downward by the attractive force generated between the movable iron core and the fixed iron core 19. Each of the upper bush 20 and the lower bush 21 guides the plunger 18. The plunger 18 moves to the lower position. The turntable 25 follows the plunger 18 and moves downward.
　上部ブッシュ２０は、プランジャー１８の軸方向の移動をガイドする。下部ブッシュ２１は、プランジャー１８の軸方向の移動をガイドする。プランジャー１８の下端は、一対のレバー１４の各々のレバーピン１７の反対側の端部を下方に押す。右側のレバー１４は、右側のバネ１３の弾性力に抗しながら右側のアーム１１を右側に押す。左側のレバー１４は、左側のバネ１３の弾性力に抗しながら左側のアーム１１を左側に押す。一対のライニング１２の各々は、ブレーキドラム１０の外周面から離れる。このとき、ブレーキドラム１０の回転は抑制されない。ブレーキドラム１０と同期して回転する巻上機６のシーブの回転も抑制されない。 The upper bush 20 guides the movement of the plunger 18 in the axial direction. The lower bush 21 guides the movement of the plunger 18 in the axial direction. The lower end of the plunger 18 pushes the opposite end of each lever pin 17 of the pair of levers 14 downward. The right lever 14 pushes the right arm 11 to the right while resisting the elastic force of the right spring 13. The left lever 14 pushes the left arm 11 to the left while resisting the elastic force of the left spring 13. Each of the pair of linings 12 is separated from the outer peripheral surface of the brake drum 10. At this time, the rotation of the brake drum 10 is not suppressed. The rotation of the sheave of the hoisting machine 6 that rotates in synchronization with the brake drum 10 is not suppressed.
　続いて、図４から図８を用いて、回転機構２４の動作を説明する。
　図４から図８は、実施の形態１に係る作動部の正面図である。 Subsequently, the operation of the rotation mechanism 24 will be described with reference to FIGS. 4 to 8.
4 to 8 are front views of the operation unit according to the first embodiment.
　図４から図８において、回転盤２５の回転位置を表すマーカーＭが示される。紙面上方向は、ブレーキ装置９の上方向である。紙面右方向は、ブレーキ装置９の右方向である。 4 to 8, a marker M indicating the rotational position of the turntable 25 is shown. The upward direction in the drawing is the upward direction of the brake device 9. The right direction in the drawing is the right direction of the brake device 9.
　まず、図４において、制動時の状態が示される。 First, in FIG. 4, the state at the time of braking is shown.
　プランジャー１８は、軸方向の上部位置に位置している。複数の上部接触部２７ａの各々は、複数の上部傾斜面３０ａの各々に接触している。複数の下部接触部２７ｂの各々の最下部は、複数の下部傾斜面３０ｂの各々の最下部から、複数の下部傾斜面３０ｂが並ぶピッチの半分の長さＡだけ順方向にずれている。複数の下部接触部２７ｂの各々は、複数の下部傾斜面３０ｂのいずれからも離れている。 The plunger 18 is located at the upper position in the axial direction. Each of the plurality of upper contact portions 27a is in contact with each of the plurality of upper inclined surfaces 30a. The lowermost portion of each of the plurality of lower contact portions 27b is shifted in the forward direction from the lowermost portion of each of the plurality of lower inclined surfaces 30b by a length A that is half the pitch of the plurality of lower inclined surfaces 30b. Each of the plurality of lower contact portions 27b is separated from any of the plurality of lower inclined surfaces 30b.
　ここで、プランジャー１８の製造上の誤差などによって、同軸度にばらつきが生じうる。このとき、プランジャー１８とケース２３の内面との間の径方向のギャップに偏りが生じる。すなわち、ギャップＢの幅とギャップＣの幅とが異なる場合がある。 Here, the coaxiality may vary due to manufacturing errors of the plunger 18 or the like. At this time, the radial gap between the plunger 18 and the inner surface of the case 23 is biased. That is, the width of the gap B may be different from the width of the gap C.
　次に、図５において、制動から解放への切替えの状態が示される。 Next, in FIG. 5, the state of switching from braking to release is shown.
　プランジャー１８は、軸方向の上部位置から下方に移動する。回転盤２５は、プランジャー１８に追従して、下方に移動する。複数の上部接触部２７ａの各々は、接触していた上部傾斜面３０ａから離れる。 The plunger 18 moves downward from the upper position in the axial direction. The turntable 25 follows the plunger 18 and moves downward. Each of the plurality of upper contact portions 27a is separated from the upper inclined surface 30a that has been in contact.
　次に、図６において、解放時の状態が示される。 Next, in FIG. 6, the state at the time of release is shown.
　プランジャー１８は、軸方向の下部位置に移動する。回転盤２５は、プランジャー１８に追従して、下方に移動する。複数の上部接触部２７ａの各々は、複数の上部傾斜面３０ａのいずれからも離れている。複数の下部接触部２７ｂの各々は、複数の下部傾斜面３０ｂの各々に下部摺動面２８ｂが接触しながら下方に移動する。複数の下部接触部２７ｂの各々は、接触している下部傾斜面３０ｂから順方向に向かう力を受ける。下部摺動面２８ｂは、接触している下部傾斜面３０ｂに沿ってスライドする。回転盤２５は、当該力によって、複数の下部傾斜面３０ｂが並ぶピッチの半分だけ順方向に回転する。回転盤２５は、プランジャー１８を連動して回転させる。 The plunger 18 moves to the lower position in the axial direction. The turntable 25 follows the plunger 18 and moves downward. Each of the plurality of upper contact portions 27a is separated from any of the plurality of upper inclined surfaces 30a. Each of the plurality of lower contact portions 27b moves downward while the lower sliding surface 28b is in contact with each of the plurality of lower inclined surfaces 30b. Each of the plurality of lower contact portions 27b receives a force in the forward direction from the lower inclined surface 30b in contact. The lower sliding surface 28b slides along the contacting lower inclined surface 30b. The turntable 25 rotates in the forward direction by a half of the pitch in which the plurality of lower inclined surfaces 30b are arranged by the force. The turntable 25 rotates the plunger 18 in conjunction with it.
　ブレーキ装置９の解放時において、プランジャー１８は、軸方向の下部位置に位置している。複数の下部接触部２７ｂの各々は、複数の下部傾斜面３０ｂの各々に接触している。複数の上部接触部２７ａの各々の最上部は、複数の上部傾斜面３０ａの各々の最上部から、複数の上部傾斜面３０ａが並ぶピッチの半分だけ順方向にずれている。複数の上部接触部２７ａの各々は、複数の上部傾斜面３０ａのいずれからも離れている。 When the brake device 9 is released, the plunger 18 is located at the lower position in the axial direction. Each of the plurality of lower contact portions 27b is in contact with each of the plurality of lower inclined surfaces 30b. The uppermost portion of each of the plurality of upper contact portions 27a is displaced in the forward direction from the uppermost portion of each of the plurality of upper inclined surfaces 30a by half the pitch in which the plurality of upper inclined surfaces 30a are arranged. Each of the plurality of upper contact portions 27a is separated from any of the plurality of upper inclined surfaces 30a.
　次に、図７において、解放から制動への切替えの状態が示される。 Next, in FIG. 7, the state of switching from release to braking is shown.
　プランジャー１８は、軸方向の下部位置から上方に移動する。回転盤２５は、プランジャー１８に追従して、下方に移動する。複数の上部接触部２７ａの各々は、接触していた上部傾斜面３０ａから離れる。 The plunger 18 moves upward from the lower position in the axial direction. The turntable 25 follows the plunger 18 and moves downward. Each of the plurality of upper contact portions 27a is separated from the upper inclined surface 30a that has been in contact.
　次に、図８において、再び制動時の状態が示される。 Next, in FIG. 8, the state at the time of braking is shown again.
　プランジャー１８は、軸方向の下部位置に移動する。回転盤２５は、プランジャー１８に追従して、上方に移動する。複数の下部接触部２７ｂの各々は、複数の下部傾斜面３０ｂのいずれからも離れている。複数の上部接触部２７ａの各々は、複数の上部傾斜面３０ａの各々に上部摺動面２８ａが接触しながら上方に移動する。複数の上部接触部２７ａの各々は、接触している上部傾斜面３０ａから順方向に向かう力を受ける。上部摺動面２８ａは、接触している上部傾斜面３０ａに沿ってスライドする。回転盤２５は、当該力によって、複数の上部傾斜面３０ａが並ぶピッチの半分だけ順方向に回転する。回転盤２５は、プランジャー１８を連動して回転させる。 The plunger 18 moves to the lower position in the axial direction. The turntable 25 follows the plunger 18 and moves upward. Each of the plurality of lower contact portions 27b is separated from any of the plurality of lower inclined surfaces 30b. Each of the plurality of upper contact portions 27a moves upward while the upper sliding surface 28a is in contact with each of the plurality of upper inclined surfaces 30a. Each of the plurality of upper contact portions 27a receives a force in the forward direction from the upper inclined surface 30a that is in contact. The upper sliding surface 28a slides along the contacting upper inclined surface 30a. The turntable 25 rotates in the forward direction by a half of the pitch in which the plurality of upper inclined surfaces 30a are arranged by the force. The turntable 25 rotates the plunger 18 in conjunction with it.
　ブレーキ装置９の制動時において、プランジャー１８は、軸方向の上部位置に位置している。複数の上部接触部２７ａの各々は、複数の上部傾斜面３０ａの各々に接触している。複数の下部接触部２７ｂの各々の最下部は、複数の下部傾斜面３０ｂの各々の最下部から、複数の下部傾斜面３０ｂが並ぶピッチの半分だけ順方向にずれている。複数の下部接触部２７ｂの各々は、複数の下部傾斜面３０ｂのいずれからも離れている。 When the brake device 9 is braked, the plunger 18 is positioned at the upper position in the axial direction. Each of the plurality of upper contact portions 27a is in contact with each of the plurality of upper inclined surfaces 30a. The lowermost portion of each of the plurality of lower contact portions 27b is shifted in the forward direction from the lowermost portion of each of the plurality of lower inclined surfaces 30b by half the pitch in which the plurality of lower inclined surfaces 30b are arranged. Each of the plurality of lower contact portions 27b is separated from any of the plurality of lower inclined surfaces 30b.
　図８において、回転盤２５は、図４の状態から、複数の上部傾斜面３０ａが並ぶピッチだけ順方向に回転している。プランジャー１８は、図４の状態から当該ピッチだけ順方向に回転している。すなわち、固定体２６は、プランジャー１８が上部位置および下部位置の間を一往復するときに、回転盤２５を介して当該ピッチだけプランジャー１８を順方向に回転させる。 8, the turntable 25 rotates in the forward direction from the state of FIG. 4 by a pitch in which the plurality of upper inclined surfaces 30a are arranged. The plunger 18 rotates in the forward direction by the pitch from the state of FIG. That is, the fixed body 26 rotates the plunger 18 in the forward direction by the pitch through the rotating plate 25 when the plunger 18 reciprocates once between the upper position and the lower position.
　以上に説明したように、実施の形態１に係るブレーキ装置９は、プランジャー１８と、上部ブッシュ２０と、下部ブッシュ２１と、回転機構２４と、を備える。プランジャー１８は、軸方向の下部位置に移動することでかご４の昇降を解放する。プランジャー１８は、かご４の昇降の制動時に軸方向の上部位置に移動する。上部ブッシュ２０の内側面は、プランジャー１８の外側面に接触する。下部ブッシュ２１の内側面は、プランジャー１８の外側面に接触する。上部ブッシュ２０および下部ブッシュ２１の各々は、プランジャー１８の軸方向の移動をガイドする。プランジャー１８が下部位置および上部位置の間を移動するときに、回転機構２４は、プランジャー１８を順方向に回転させる。 As described above, the brake device 9 according to the first embodiment includes the plunger 18, the upper bush 20, the lower bush 21, and the rotation mechanism 24. The plunger 18 moves up and down in the axial direction by moving to the lower position in the axial direction. The plunger 18 moves to the upper position in the axial direction when braking the elevator car 4. The inner surface of the upper bush 20 contacts the outer surface of the plunger 18. The inner surface of the lower bush 21 is in contact with the outer surface of the plunger 18. Each of the upper bush 20 and the lower bush 21 guides the movement of the plunger 18 in the axial direction. When the plunger 18 moves between the lower position and the upper position, the rotation mechanism 24 rotates the plunger 18 in the forward direction.
　プランジャー１８は、軸方向に移動するときに、一定の回転方向である順方向に回転する。これにより、上部ブッシュ２０および下部ブッシュ２１の各々は、プランジャー１８をガイドするときに同じ箇所に繰り返し接触しない。このため、ブッシュである上部ブッシュ２０および下部ブッシュ２１の各々は、プランジャー１８の同軸度がばらついていても、偏って磨耗しにくくなる。 When the plunger 18 moves in the axial direction, it rotates in the forward direction, which is a constant rotation direction. Thereby, each of the upper bush 20 and the lower bush 21 does not repeatedly contact the same portion when guiding the plunger 18. For this reason, the upper bush 20 and the lower bush 21 that are bushes are less likely to be worn evenly even if the coaxiality of the plunger 18 varies.
　上部ブッシュ２０および下部ブッシュ２１の各々が偏って磨耗しにくくなることによって、上部ブッシュ２０および下部ブッシュ２１の各々の寿命が長くなる。 Each of the upper bush 20 and the lower bush 21 is biased and is less likely to wear, so that the life of each of the upper bush 20 and the lower bush 21 is extended.
　また、ブレーキ装置９は、励磁コイル２２を備える。励磁コイル２２は、上部ブッシュ２０および下部ブッシュ２１の各々の外側に設けられる。励磁コイル２２は、発生させる磁場によってプランジャー１８を下部位置に移動させる。 Further, the brake device 9 includes an exciting coil 22. The exciting coil 22 is provided outside each of the upper bush 20 and the lower bush 21. The exciting coil 22 moves the plunger 18 to the lower position by the generated magnetic field.
　ここで、図９および図１０を用いて、プランジャー１８の同軸度のばらつきによる影響を説明する。
　図９は、実施の形態１に係るブレーキ装置の要部の上面図である。図１０は、実施の形態１に係るブレーキ装置の要部の正面図である。 Here, the influence by the variation in the coaxiality of the plunger 18 will be described with reference to FIGS. 9 and 10.
FIG. 9 is a top view of a main part of the brake device according to the first embodiment. FIG. 10 is a front view of a main part of the brake device according to the first embodiment.
　図９において、プランジャー１８および上部ブッシュ２０が示される。 In FIG. 9, the plunger 18 and the upper bush 20 are shown.
　プランジャー１８は、製造上の誤差などによって、同軸度にばらつきが生じうる。このとき、プランジャー１８と上部ブッシュ２０との間の径方向のギャップに偏りが生じる。 The plunger 18 may vary in coaxiality due to manufacturing errors and the like. At this time, the radial gap between the plunger 18 and the upper bush 20 is biased.
　図１０において、作動部１５が示される。 In FIG. 10, the operation part 15 is shown.
　励磁コイル２２の内側の磁場の分布によって、プランジャー１８は、プランジャー１８と上部ブッシュ２０との間の径方向のギャップが狭い方向に強く押し付けられる。上部ブッシュ２０のプランジャー１８との間のギャップが狭い部分は、強く押し付けられているプランジャー１８をガイドする。このとき、上部ブッシュ２０の当該部分は、他の部分より磨耗が進みやすくなる。プランジャー１８が回転しなければ、プランジャー１８は、上部ブッシュ２０の当該部分に繰り返し強く押し付けられる。この場合に、上部ブッシュ２０の当該部分が偏って磨耗しうる。上部ブッシュ２０が偏って磨耗する場合に、プランジャー１８が回転しなければ、プランジャー１８と上部ブッシュ２０との間の径方向のギャップが狭い部分は、強く押し付けられることでより偏って磨耗しうる。 Due to the distribution of the magnetic field inside the exciting coil 22, the plunger 18 is strongly pressed in a direction in which the radial gap between the plunger 18 and the upper bush 20 is narrow. A portion where the gap between the upper bush 20 and the plunger 18 is narrow guides the plunger 18 that is strongly pressed. At this time, the portion of the upper bush 20 is more easily worn than the other portions. If the plunger 18 does not rotate, the plunger 18 is repeatedly and strongly pressed against that portion of the upper bush 20. In this case, the portion of the upper bush 20 can be worn away. If the plunger 18 does not rotate when the upper bush 20 wears unevenly, the portion where the radial gap between the plunger 18 and the upper bush 20 is narrow is worn more unevenly by being strongly pressed. sell.
　また、上部ブッシュ２０の磨耗が偏ってすすむ場合に、プランジャー１８は上部ブッシュ２０に強く押し付けられる。プランジャー１８が回転しなければ、これにより、プランジャー１８と上部ブッシュ２０との間に発生する摺動ロスが増加する。 In addition, when the wear of the upper bush 20 is biased, the plunger 18 is strongly pressed against the upper bush 20. If the plunger 18 does not rotate, this increases the sliding loss that occurs between the plunger 18 and the upper bush 20.
　ここで、ブレーキ装置９において、回転機構２４は、プランジャー１８を順方向に回転させる。プランジャー１８は、上部ブッシュ２０の同じ箇所に繰り返し接触しない。このため、上部ブッシュ２０の内側面は、プランジャー１８との接触によって偏って磨耗しにくくなる。同様に、下部ブッシュ２１の内側面は、プランジャー１８との接触によって偏って磨耗しにくくなる。また、プランジャー１８と上部ブッシュ２０および下部ブッシュ２１との間に発生する摺動ロスの増加が抑えられる。 Here, in the brake device 9, the rotation mechanism 24 rotates the plunger 18 in the forward direction. The plunger 18 does not repeatedly contact the same part of the upper bush 20. For this reason, the inner surface of the upper bush 20 is less likely to be worn by being biased by contact with the plunger 18. Similarly, the inner side surface of the lower bush 21 is less likely to be worn by being biased by contact with the plunger 18. Further, an increase in sliding loss that occurs between the plunger 18 and the upper bush 20 and the lower bush 21 is suppressed.
　ブレーキ装置９において、プランジャー１８と上部ブッシュ２０および下部ブッシュ２１との間の摩擦を低減する潤滑剤が使用されない。このため、ブレーキ装置９のブレーキトルクは、当該潤滑剤がブレーキドラム１０とライニング１２との間に落下することによって低下しない。 In the brake device 9, a lubricant that reduces friction between the plunger 18 and the upper bush 20 and the lower bush 21 is not used. For this reason, the brake torque of the brake device 9 does not decrease when the lubricant falls between the brake drum 10 and the lining 12.
　また、回転機構２４は、回転盤２５と、固定体２６と、を備える。回転盤２５は、プランジャー１８の軸方向の端部に設けられる。回転盤２５は、プランジャー１８に追従して軸方向に移動する。回転盤２５は、プランジャー１８を軸方向のまわりに連動して回転させる。プランジャー１８が下部位置および上部位置の間を移動するときに、固定体２６は、回転盤２５を介してプランジャー１８を順方向に回転させる。 Further, the rotating mechanism 24 includes a rotating disk 25 and a fixed body 26. The turntable 25 is provided at the end of the plunger 18 in the axial direction. The turntable 25 moves in the axial direction following the plunger 18. The turntable 25 rotates the plunger 18 in conjunction with the axial direction. When the plunger 18 moves between the lower position and the upper position, the fixed body 26 rotates the plunger 18 in the forward direction via the turntable 25.
　これにより、プランジャー１８は、例えば溝などの回転のための構造を外側面に必要としない。ここで、プランジャー１８の外側面は、上部ブッシュ２０および下部ブッシュ２１に接触しうる。このため、プランジャー１８の外側面に構造を設けることによって、上部ブッシュ２０および下部ブッシュ２１の磨耗を進めることがない。また、作動部１５の大きさは、径方向に大きくならない。 Thereby, the plunger 18 does not need a structure for rotation such as a groove on the outer surface. Here, the outer surface of the plunger 18 can contact the upper bush 20 and the lower bush 21. For this reason, by providing a structure on the outer surface of the plunger 18, wear of the upper bush 20 and the lower bush 21 is not advanced. Further, the size of the operating portion 15 does not increase in the radial direction.
　また、固定体２６は、下部固定盤２９ｂと、上部固定盤２９ａと、を備える。下部固定盤２９ｂは、軸方向において回転盤２５の一側である下側に対向する。下部固定盤２９ｂは、プランジャー１８が下部位置に移動するときに、回転盤２５を順方向に回転させる。上部固定盤２９ａは、軸方向において回転盤２５の他側である上側に対向する。上部固定盤２９ａは、プランジャー１８が上部位置に移動するときに、回転盤２５を順方向に回転させる。 Further, the fixed body 26 includes a lower fixed platen 29b and an upper fixed platen 29a. The lower fixed platen 29b faces the lower side that is one side of the rotary platen 25 in the axial direction. The lower fixed platen 29b rotates the turntable 25 in the forward direction when the plunger 18 moves to the lower position. The upper fixed plate 29a faces the upper side, which is the other side of the rotary plate 25, in the axial direction. The upper fixed platen 29a rotates the turntable 25 in the forward direction when the plunger 18 moves to the upper position.
　プランジャー１８は、ブレーキ装置９の開放および制動によって、下方への移動と上方への移動とを交互に繰り返す。プランジャー１８が下方へ移動するときと、プランジャー１８が上方へ移動するときと、の両方において、固定体２６は、プランジャー１８を順方向に回転させる。これにより、プランジャー１８と上部ブッシュ２０とは、プランジャー１８の軸方向の移動において連続して同じ箇所が接触しない。プランジャー１８と下部ブッシュ２１とは、プランジャー１８の軸方向の移動において連続して同じ箇所が接触しない。このため、上部ブッシュ２０の内側面は、プランジャー１８との接触によって偏って磨耗しにくくなる。同様に、下部ブッシュ２１の内側面は、プランジャー１８との接触によって偏って磨耗しにくくなる。 The plunger 18 alternately repeats the downward movement and the upward movement by opening and braking the brake device 9. The fixed body 26 rotates the plunger 18 in the forward direction both when the plunger 18 moves downward and when the plunger 18 moves upward. Thereby, the same location does not contact the plunger 18 and the upper bush 20 continuously in the movement of the plunger 18 in the axial direction. The plunger 18 and the lower bush 21 do not come into contact with each other continuously in the axial movement of the plunger 18. For this reason, the inner surface of the upper bush 20 is less likely to be worn by being biased by contact with the plunger 18. Similarly, the inner side surface of the lower bush 21 is less likely to be worn by being biased by contact with the plunger 18.
　また、回転盤２５は、下部接触部２７ｂと、上部接触部２７ａと、を備える。下部接触部２７ｂは、下部固定盤２９ｂに対向する側に設けられる。上部接触部２７ａは、上部固定盤２９ａに対向する側に設けられる。下部固定盤２９ｂは、複数の下部傾斜面３０ｂを有する。複数の下部傾斜面３０ｂの各々は、回転盤２５の回転方向において同じ向きに傾く。複数の下部傾斜面３０ｂは、回転盤に対向する側に円環状に並ぶ。複数の下部傾斜面３０ｂは、プランジャー１８が下部位置に移動するときに下部接触部２７ｂに接触して回転盤２５を順方向に回転させる。上部固定盤２９ａは、複数の上部傾斜面３０ａを有する。複数の上部傾斜面３０ａの各々は、回転盤２５の回転方向において同じ向きに傾く。複数の上部傾斜面３０ａは、回転盤に対向する側に円環状に並ぶ。複数の上部傾斜面３０ａは、プランジャー１８が上部位置に移動するときに上部接触部２７ａに接触して回転盤２５を順方向に回転させる。 Further, the turntable 25 includes a lower contact portion 27b and an upper contact portion 27a. The lower contact portion 27b is provided on the side facing the lower fixed platen 29b. The upper contact portion 27a is provided on the side facing the upper fixed platen 29a. The lower fixed platen 29b has a plurality of lower inclined surfaces 30b. Each of the plurality of lower inclined surfaces 30 b is inclined in the same direction in the rotation direction of the rotating disk 25. The plurality of lower inclined surfaces 30b are arranged in an annular shape on the side facing the rotating disk. The plurality of lower inclined surfaces 30b come into contact with the lower contact portion 27b when the plunger 18 moves to the lower position, and rotate the turntable 25 in the forward direction. The upper fixed platen 29a has a plurality of upper inclined surfaces 30a. Each of the plurality of upper inclined surfaces 30 a is inclined in the same direction in the rotation direction of the turntable 25. The plurality of upper inclined surfaces 30a are arranged in an annular shape on the side facing the rotating disk. When the plunger 18 moves to the upper position, the plurality of upper inclined surfaces 30a come into contact with the upper contact portion 27a and rotate the turntable 25 in the forward direction.
　下部傾斜面３０ｂは、プランジャー１８の軸方向の下方への移動を、順方向の回転移動に変換する。上部傾斜面３０ａは、プランジャー１８の軸方向の上方への移動を、順方向の回転移動に変換する。これにより、回転機構２４は、プランジャー１８を回転させるための追加の動力を必要としない。 The lower inclined surface 30b converts the downward movement of the plunger 18 in the axial direction into a forward rotational movement. The upper inclined surface 30a converts the upward movement of the plunger 18 in the axial direction into a forward rotational movement. Thereby, the rotation mechanism 24 does not require additional power for rotating the plunger 18.
　また、複数の下部傾斜面３０ｂは、一定のピッチで円環状に並ぶ。複数の上部傾斜面３０ａは、当該ピッチで円環状に並ぶ。複数の下部傾斜面３０ｂの各々は、軸方向に垂直な投影面上において、複数の上部傾斜面３０ａの各々から当該ピッチの半分だけ順方向にずれている。 Further, the plurality of lower inclined surfaces 30b are arranged in an annular shape at a constant pitch. The plurality of upper inclined surfaces 30a are arranged in an annular shape at the pitch. Each of the plurality of lower inclined surfaces 30b is shifted in the forward direction by a half of the pitch from each of the plurality of upper inclined surfaces 30a on the projection plane perpendicular to the axial direction.
　複数の下部傾斜面３０ｂのいずれかの下端部に下部接触部２７ｂが接触しているときに、下部固定盤２９ｂは回転盤２５を回転させない。複数の上部傾斜面３０ａのいずれかの上端部に上部接触部２７ａが接触しているときに、上部固定盤２９ａは回転盤２５を回転させない。ここで、複数の下部傾斜面３０ｂの各々は、複数の上部傾斜面３０ａの各々からピッチの半分だけ順方向にずれている。このため、固定体２６は、回転盤２５のいずれの回転位置においても、下部固定盤２９ｂまたは上部固定盤２９ａの少なくともいずれかによって回転盤２５を順方向に回転させられる。このため、プランジャー１８は、軸方向の移動によって確実に回転する。また、プランジャー１８は、ピッチの半分ずつ回転する。これにより上部ブッシュ２０および下部ブッシュ２１の磨耗の偏りは、より少なくなる。 When the lower contact portion 27b is in contact with the lower end portion of any of the plurality of lower inclined surfaces 30b, the lower fixed platen 29b does not rotate the turntable 25. When the upper contact portion 27a is in contact with the upper end portion of any one of the plurality of upper inclined surfaces 30a, the upper fixed plate 29a does not rotate the turntable 25. Here, each of the plurality of lower inclined surfaces 30b is shifted in the forward direction by half of the pitch from each of the plurality of upper inclined surfaces 30a. For this reason, the fixed body 26 can rotate the rotary disk 25 in the forward direction by at least one of the lower fixed disk 29b and the upper fixed disk 29a at any rotation position of the rotary disk 25. For this reason, the plunger 18 is reliably rotated by the movement in the axial direction. The plunger 18 rotates by half of the pitch. Thereby, the bias of wear of the upper bush 20 and the lower bush 21 is further reduced.
　また、ブレーキ装置９は、ケース２３を備える。ケース２３は、プランジャー１８と、上部ブッシュ２０と、下部ブッシュ２１と、を収納する。回転機構２４は、ケース２３の外部に設けられる。 Moreover, the brake device 9 includes a case 23. The case 23 accommodates the plunger 18, the upper bush 20, and the lower bush 21. The rotation mechanism 24 is provided outside the case 23.
　これにより、回転機構２４を備えない既存のブレーキ装置において、外部から回転機構２４を容易に追加できる。このため、回転機構２４は、既存のブレーキ装置の寿命を長くできる。 Thereby, in an existing brake device that does not include the rotation mechanism 24, the rotation mechanism 24 can be easily added from the outside. For this reason, the rotation mechanism 24 can extend the lifetime of the existing brake device.
　なお、複数の下部接触部２７ｂの数は、複数の下部傾斜面３０ｂの数より少なくてもよい。複数の上部接触部２７ａの数は、複数の上部傾斜面３０ａの数より少なくてもよい。 Note that the number of the plurality of lower contact portions 27b may be smaller than the number of the plurality of lower inclined surfaces 30b. The number of the plurality of upper contact portions 27a may be smaller than the number of the plurality of upper inclined surfaces 30a.
　複数の下部接触部２７ｂの各々は、リブであってもよい。複数の上部接触部２７ａの各々は、リブであってもよい。 Each of the plurality of lower contact portions 27b may be a rib. Each of the plurality of upper contact portions 27a may be a rib.
　複数の下部傾斜面３０ｂの各々は、湾曲して傾斜していてもよい。複数の上部傾斜面３０ａの各々は、湾曲して傾斜していてもよい。 Each of the plurality of lower inclined surfaces 30b may be curved and inclined. Each of the plurality of upper inclined surfaces 30a may be curved and inclined.
　複数の下部接触部２７ｂの各々は、軸方向に垂直な投影面上において、複数の上部接触部２７ａの各々からピッチの半分だけ順方向にずれていてもよい。このとき、複数の下部傾斜面３０ｂの各々は、軸方向に垂直な投影面上において、複数の上部傾斜面３０ａのいずれかに重なっている。 Each of the plurality of lower contact portions 27b may be displaced in the forward direction by half of the pitch from each of the plurality of upper contact portions 27a on the projection plane perpendicular to the axial direction. At this time, each of the plurality of lower inclined surfaces 30b overlaps one of the plurality of upper inclined surfaces 30a on the projection plane perpendicular to the axial direction.
　本発明に係るブレーキ装置は、エレベーターに適用できる。 The brake device according to the present invention can be applied to an elevator.
　１　エレベーター、　２　昇降路、　３　機械室、　４　かご、　５　おもり、　６　巻上機、　７　そらせ車、　８　主ロープ、　９　ブレーキ装置、　１０　ブレーキドラム、　１１　アーム、　１２　ライニング、　１３　バネ、　１４　レバー、　１５　作動部、　１６　アームピン、　１７　レバーピン、　１８　プランジャー、　１９　固定鉄心、　２０　上部ブッシュ、　２１　下部ブッシュ、　２２　励磁コイル、　２３　ケース、　２４　回転機構、　２５　回転盤、　２６　固定体、　２７ａ　上部接触部、　２７ｂ　下部接触部、　２８ａ　上部摺動面、　２８ｂ　下部摺動面、　２９ａ　上部固定盤、　２９ｂ　下部固定盤、　３０ａ　上部傾斜面、　３０ｂ　下部傾斜面 1 elevator, 2 hoistway, 3 machine room, 4 cages, 5 weights, 6 hoisting machines, 7 deflecting cars, 8 main ropes, 9 brake devices, 10 brake drums, 11 arms, 12 linings, 13 springs, 14 levers, 15 Actuator, 16 Arm Pin, 17 Lever Pin, 18 Plunger, 19 Fixed Iron Core, 20 Upper Bush, 21 Lower Bush, 22 Exciting Coil, 23 Case, 24 Rotating Mechanism, 25 Rotating Plate, 26 Fixed Body, 27a Upper Contact, 27b Lower contact portion, 28a Upper sliding surface, 28b Lower sliding surface, 29a Upper fixed plate, 29b Lower fixed plate, 30a Upper inclined surface, 30b Lower inclined surface

Claims (7)

  1. 　軸方向の第１位置に移動することでかごの昇降を解放し、前記かごの昇降の制動時に前記軸方向の第２位置に移動するプランジャーと、
    　内側面が前記プランジャーの外側面に接触し、前記プランジャーの前記軸方向の移動をガイドするブッシュと、
    　前記プランジャーが前記第１位置および前記第２位置の間を移動するときに前記プランジャーを順方向に回転させる回転機構と、
    　を備えるエレベーターのブレーキ装置。     A plunger that moves to the first position in the axial direction to release the elevator from moving up and down, and moves to the second position in the axial direction when braking the raising and lowering of the car;
    A bushing whose inner surface contacts the outer surface of the plunger and guides the axial movement of the plunger;
    A rotation mechanism for rotating the plunger in a forward direction when the plunger moves between the first position and the second position;
    Elevator brake device comprising.
  2. 　前記ブッシュの外側に設けられ、発生させる磁場によって前記プランジャーを前記第１位置に移動させる励磁コイル、
    　を備える請求項１に記載のエレベーターのブレーキ装置。     An exciting coil provided outside the bush and moving the plunger to the first position by a generated magnetic field;
    The elevator brake device according to claim 1.
  3. 　前記回転機構は、
    　前記プランジャーの前記軸方向の端部に設けられ、前記プランジャーに追従して前記軸方向に移動し、前記プランジャーを前記軸方向のまわりに連動して回転させる回転体と、
    　前記プランジャーが前記第１位置および前記第２位置の間を移動するときに前記回転体を介して前記プランジャーを順方向に回転させる固定体と、
    　を備える請求項１または請求項２に記載のエレベーターのブレーキ装置。     The rotation mechanism is
    A rotating body that is provided at an end of the plunger in the axial direction, moves in the axial direction following the plunger, and rotates the plunger in conjunction with the axial direction;
    A fixed body that rotates the plunger in a forward direction via the rotating body when the plunger moves between the first position and the second position;
    The elevator brake device according to claim 1 or 2, further comprising:
  4. 　前記固定体は、
    　前記軸方向において前記回転体の一側に対向し、前記プランジャーが前記第１位置に移動するときに前記回転体を前記順方向に回転させる第１固定体と、
    　前記軸方向において前記回転体の他側に対向し、前記プランジャーが前記第２位置に移動するときに前記回転体を前記順方向に回転させる第２固定体と、
    　を備える請求項３に記載のエレベーターのブレーキ装置。     The fixed body is
    A first fixed body that faces one side of the rotating body in the axial direction and rotates the rotating body in the forward direction when the plunger moves to the first position;
    A second fixed body that faces the other side of the rotating body in the axial direction and rotates the rotating body in the forward direction when the plunger moves to the second position;
    The elevator brake device according to claim 3.
  5. 　前記回転体は、前記第１固定体に対向する側に設けられる第１接触部と、前記第２固定体に対向する側に設けられる第２接触部と、を備え、
    　前記第１固定体は、
    　前記回転体の回転方向において各々が同じ向きに傾いて、前記回転体に対向する側に円環状に並び、前記プランジャーが前記第１位置に移動するときに前記第１接触部に接触して前記回転体を前記順方向に回転させる複数の第１傾斜面、
    　を有し、
    　前記第２固定体は、
    　前記回転体の回転方向において各々が前記第１傾斜面の各々と同じ向きに傾いて、前記回転体に対向する側に円環状に並び、前記プランジャーが前記第２位置に移動するときに前記第２接触部に接触して前記回転体を前記順方向に回転させる複数の第２傾斜面、
    　を有する請求項４に記載のエレベーターのブレーキ装置。     The rotating body includes a first contact portion provided on a side facing the first fixed body, and a second contact portion provided on a side facing the second fixed body,
    The first fixed body is:
    Each of them is inclined in the same direction in the rotation direction of the rotating body, arranged in an annular shape on the side facing the rotating body, and contacts the first contact portion when the plunger moves to the first position. A plurality of first inclined surfaces for rotating the rotating body in the forward direction;
    Have
    The second fixed body is
    Each of the rotating bodies is inclined in the same direction as each of the first inclined surfaces, arranged in an annular shape on the side facing the rotating body, and the plunger moves to the second position. A plurality of second inclined surfaces that contact the second contact portion and rotate the rotating body in the forward direction;
    The elevator brake device according to claim 4.
  6. 　前記複数の第１傾斜面は、一定のピッチで円環状に並び、
    　前記複数の第２傾斜面は、前記ピッチで円環状に並び、
    　前記複数の第１傾斜面の各々は、前記軸方向に垂直な投影面上において、前記複数の第２傾斜面の各々から前記ピッチの半分だけ前記順方向にずれている請求項５に記載のエレベーターのブレーキ装置。     The plurality of first inclined surfaces are arranged in an annular shape at a constant pitch,
    The plurality of second inclined surfaces are arranged in an annular shape at the pitch,
    The each of the plurality of first inclined surfaces is displaced in the forward direction by a half of the pitch from each of the plurality of second inclined surfaces on a projection plane perpendicular to the axial direction. Elevator brake device.
  7. 　前記プランジャーと、前記ブッシュと、を収納するケース、
    　を備え、
    　前記回転機構は、前記ケースの外部に設けられる請求項１から請求項６のいずれか一項に記載のブレーキ装置。     A case for storing the plunger and the bush;
    With
    The brake device according to any one of claims 1 to 6, wherein the rotation mechanism is provided outside the case.
PCT/JP2018/018801 2018-05-15 2018-05-15 Brake device for elevator WO2019220550A1 (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4023655A (en) * 1975-11-21 1977-05-17 Mitsubishi Denki Kabushiki Kaisha Brake for elevator
JPH09280282A (en) * 1996-04-11 1997-10-28 Mitsubishi Denki Bill Techno Service Kk Brake device
JP2003343609A (en) * 2002-05-29 2003-12-03 Hitachi Ltd Electromagnetic brake device
JP2007187121A (en) * 2006-01-16 2007-07-26 Toyota Motor Corp Fuel pump
WO2007142135A1 (en) * 2006-06-05 2007-12-13 Mitsubishi Pencil Co., Ltd. Mechanical pencil
JP2008007217A (en) * 2006-06-27 2008-01-17 Mitsubishi Electric Corp Brake device for elevator hoisting machine
JP2012130216A (en) * 2010-12-17 2012-07-05 Nec Infrontia Corp Charge mechanism and charger
JP2018027849A (en) * 2016-08-19 2018-02-22 株式会社日立ビルシステム Electromagnetic brake abrasion detection device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4023655A (en) * 1975-11-21 1977-05-17 Mitsubishi Denki Kabushiki Kaisha Brake for elevator
JPH09280282A (en) * 1996-04-11 1997-10-28 Mitsubishi Denki Bill Techno Service Kk Brake device
JP2003343609A (en) * 2002-05-29 2003-12-03 Hitachi Ltd Electromagnetic brake device
JP2007187121A (en) * 2006-01-16 2007-07-26 Toyota Motor Corp Fuel pump
WO2007142135A1 (en) * 2006-06-05 2007-12-13 Mitsubishi Pencil Co., Ltd. Mechanical pencil
JP2008007217A (en) * 2006-06-27 2008-01-17 Mitsubishi Electric Corp Brake device for elevator hoisting machine
JP2012130216A (en) * 2010-12-17 2012-07-05 Nec Infrontia Corp Charge mechanism and charger
JP2018027849A (en) * 2016-08-19 2018-02-22 株式会社日立ビルシステム Electromagnetic brake abrasion detection device

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