Elevator safety devices

Abstract

Provided is a safety device for an elevator, wherein an operation mechanism has an operation force generating body, a movable member, an electromagnet, and a return mechanism. The movable member is capable of displacement between a normal position and an operating position. A transmission mechanism is configured so as to transmit the operation force from the operation mechanism as a tension force to a braking mechanism, and limit transmission of a compression force. The return mechanism has a return member capable of moving independently of the movable member, and a drive device that moves the return member and thereby moves the movable member toward the normal position from the operating position.

Description

[Technical field]

[0001] The present disclosure relates to elevator safety devices. [Background technology]

[0002] In conventional elevator safety devices, when a detector detects that a lifted or lowered body is falling at an excessive speed, the electromagnet is cut off. This releases the compression force of the spring, and a pair of small wedges are pulled up. If the lifted or lowered body continues to fall from this state, the pair of wedges are pulled up via a pair of connecting parts, and the lifted or lowered body stops (for example, see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2022 / 003768 Summary of the Invention [Problem to be solved by the invention]

[0004] In the conventional elevator safety device described above, the drive mechanism and the braking mechanism are connected by a lifting rod, so a large compressive force is applied to the lifting rod during the return movement after the braking operation. Therefore, in order to prevent the lifting rod from buckling, it is necessary to increase the strength of the lifting rod, which increases the weight of the entire device.

[0005] The present disclosure has been made to solve the above-mentioned problems, and aims to provide an elevator safety device that can reduce the weight of the transmission mechanism. [Means for solving the problem]

[0006] The elevator safety device according to the present disclosure comprises a braking mechanism provided on a lifting body that moves up and down in a hoistway and braking the movement of the lifting body, an operating mechanism provided on the lifting body and generating an operating force for operating the braking mechanism, and a transmission mechanism for transmitting the operating force from the operating mechanism to the braking mechanism, the operating mechanism having an operating force generator that generates an operating force, a movable member that is connected to the transmission mechanism and receives an operating force from the operating force generator and is displaceable between a normal position which is a position when the braking mechanism is in an inoperative state and an operating position which is a position when the braking mechanism is in an activated state, an electromagnet that holds the movable member in the normal position against the operating force generator, and a return mechanism that returns the movable member from the operating position to the normal position against the operating force generator, the transmission mechanism being configured to transmit the operating force as a tensile force and to limit the transmission of a compressive force, and the return mechanism having a return member that is movable independently of the movable member, and a drive device that moves the return member to move the movable member from the operating position to the normal position. Effect of the Invention

[0007] According to the elevator safety device disclosed herein, the weight of the transmission mechanism can be reduced. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic diagram showing an elevator according to a first embodiment. [Diagram 2] FIG. 2 is a front view showing the lower part of the car of FIG. 1. [Diagram 3] FIG. 3 is a side view showing a main part of the braking mechanism of FIG. 2. [Figure 4] FIG. 4 is a side view showing an operating state of the braking mechanism of FIG. 3. [Diagram 5] FIG. 2 is a front view showing the car of FIG. 1. [Figure 6] FIG. 6 is a front view showing a state in which the braking mechanism of FIG. 5 is activated. [Figure 7] 7 is a front view showing a state in which the movable member in FIG. 6 is in the middle of returning from the operating position to the normal position. [Figure 8]8 is a front view showing a state in which the movable member in FIG. 7 has been returned to its normal position. [Figure 9] FIG. 11 is a front view showing an elevator car according to embodiment 2. [Figure 10] FIG. 11 is a front view showing an elevator car according to embodiment 3. [Figure 11] FIG. 11 is a front view showing an elevator car according to embodiment 4. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, embodiments will be described with reference to the drawings. Embodiment 1 Fig. 1 is a schematic diagram showing an elevator according to embodiment 1. In the figure, a machine room 2 is provided above a hoistway 1. In the machine room 2, a hoist 3, a deflector sheave 4, an elevator control device 5, and a safety monitoring device 6 are installed.

[0010] The hoist 3 has a drive sheave 7, a hoist motor (not shown), and a hoist brake (not shown). The hoist motor rotates the drive sheave 7. The hoist brake keeps the drive sheave 7 stationary. The hoist brake also brakes the rotation of the drive sheave 7.

[0011] A suspension body 8 is wound around the drive sheave 7 and the deflector sheave 4. A plurality of ropes or a plurality of belts are used as the suspension body 8. A car 9 is connected to a first end of the suspension body 8. A counterweight 10 is connected to a second end of the suspension body 8.

[0012] A car 9 and a counterweight 10 are suspended by a suspension body 8, and move up and down in the hoistway 1 by rotating a drive sheave 7. An elevator control device 5 controls the operation of the car 9 by controlling the hoisting machine 3.

[0013] A pair of car guide rails 11 and a pair of counterweight guide rails 12 are installed in the hoistway 1. The pair of car guide rails 11 guide the ascent and descent of the car 9. The pair of counterweight guide rails 12 guide the ascent and descent of the counterweight 10. Only one car guide rail 11 and one counterweight guide rail 12 are shown in Fig. 1.

[0014] The car 9 is equipped with a safety device 50. The lifting body in the first embodiment is the car 9.

[0015] The safety monitoring device 6 monitors whether the elevator is in an emergency state. Examples of emergency states include a state in which the descending speed of the car 9 reaches an excessive speed, a state in which the downward acceleration of the car 9 reaches an excessive acceleration, etc. When the elevator is in an emergency state, the safety monitoring device 6 brings the car 9 to an emergency stop using the safety device 50.

[0016] The safety device 50 includes a brake mechanism 20 , an operating mechanism 30 , and a transmission mechanism 40 .

[0017] The braking mechanism 20 is provided under the car 9. The braking mechanism 20 is an emergency stop device that brakes the movement of the car 9.

[0018] The operating mechanism 30 is provided on the upper part of the car 9 at a distance from the braking mechanism 20 in the vertical direction. The operating mechanism 30 generates an operating force that operates the braking mechanism 20.

[0019] The transmission mechanism 40 transmits the actuating force from the actuating mechanism 30 to the brake mechanism 20 .

[0020] Fig. 2 is a front view showing the lower part of the car 9 in Fig. 1. The brake mechanism 20 has an operating lever 21, an interlocking lever 22, and a connecting rod 23.

[0021] The operating lever 21 is rotatable around a horizontal operating lever shaft 21a together with the operating lever shaft 21a with respect to the car 9. The interlocking lever 22 is rotatable around a horizontal interlocking lever shaft 22a together with the car 9.

[0022] The connecting rod 23 is rotatably connected to the operating lever 21, and is rotatably connected to the interlocking lever 22. In this way, the connecting rod 23 connects the operating lever 21 and the interlocking lever 22 together.

[0023] The transmission mechanism 40 has a first rod 41 and a second rod 42. The first rod 41 is connected to the operating mechanism 30. The second rod 42 is connected to the operating lever 21 so as to be rotatable.

[0024] A slide hole 42a is provided in the second rod 42. A pin 41a is provided in the first rod 41. The pin 41a is inserted into the slide hole 42a. The pin 41a is movable within the slide hole 42a along the slide hole 42a.

[0025] As a result, the first rod 41 is connected to the second rod 42 so as to be slidable in the axial direction of the first rod 41. Furthermore, with such a connection structure between the first rod 41 and the second rod 42, the transmission mechanism 40 is configured to transmit the operating force as a tensile force and to limit the transmission of a compressive force. The transmission mechanism 40 of the first embodiment is configured not to transmit a compressive force between the brake mechanism 20 and the operating mechanism 30.

[0026] When the brake mechanism 20 is operated, the first rod 41 is pulled up from the state shown in Fig. 2. This causes the second rod 42 to be pulled up as well, and the operating lever 21 rotates together with the operating lever shaft 21a in the counterclockwise direction in Fig. 2. The rotation of the operating lever 21 is transmitted to the interlocking lever 22 via the connecting rod 23, and the interlocking lever 22 rotates together with the interlocking lever shaft 22a in the clockwise direction in Fig. 2.

[0027] Fig. 3 is a side view showing a main part of the brake mechanism 20 of Fig. 2. Fig. 4 is a side view showing the brake mechanism 20 of Fig. 3 in an operating state.

[0028] 2, the braking mechanism 20 has a frame 24, a pair of wedge guides 25, a pair of wedge guide springs 26, a pair of wedge members 27, and a pair of wedge connecting links 28. In FIG. 3, the pair of wedge connecting links 28 is omitted.

[0029] The frame body 24 is fixed to the lower part of the car 9. Each wedge guide spring 26 is provided between the corresponding wedge guide 25 and the frame body 24. Each wedge member 27 is connected to the operating lever shaft 21a via a corresponding wedge connecting link 28.

[0030] When the braking mechanism 20 is not in operation, each wedge member 27 faces the car guide rail 11 at a distance. When the braking mechanism 20 is in operation, the pair of wedge members 27 is moved upward relative to the frame body 24 by rotation of the operating lever shaft 21a. At this time, each wedge member 27 is guided by the corresponding wedge guide 25 and approaches the car guide rail 11, and comes into contact with the car guide rail 11.

[0031] When each wedge member 27 comes into contact with the car guide rail 11, a braking force is generated in the direction opposite to the falling direction of the car 9, and the car 9 is stopped. The magnitude of the braking force is the product of the pressing force of the pair of wedge members 27 against the car guide rail 11 by the pair of wedge guide springs 26 and the friction coefficient between each wedge member 27 and the car guide rail 11.

[0032] 3 and 4 is provided on the interlocking lever shaft 22a side. When the braking mechanism 20 is activated, the pair of car guide rails 11 are gripped by the braking mechanism 20 at the same time.

[0033] Fig. 5 is a front view showing the car 9 in Fig. 1. Fig. 6 is a front view showing a state in which the brake mechanism 20 in Fig. 5 is activated.

[0034] The operating mechanism 30 includes an operating force generator 31, a movable member 32, a pair of movable member guides 33, an electromagnetic magnet , a movable core 35, and a return mechanism .

[0035] The working force generator 31 is provided between the car 9 and the movable member 32. The working force generator 31 generates a working force that operates the braking mechanism 20. As the working force generator 31, for example, a coil spring is used.

[0036] The movable member 32 is displaceable in the vertical direction between a normal position shown in Fig. 5 and an actuated position shown in Fig. 6. The normal position is the position of the movable member 32 when the brake mechanism 20 is in a non-actuated state. At this time, the actuating force generator 31 is compressed, and the movable member 32 receives an actuating force from the actuating force generator 31. The actuated position is the position of the movable member 32 when the brake mechanism 20 is in an actuated state.

[0037] A first rod 41 is rotatably connected to the movable member 32. When the movable member 32 is displaced to the operating position, the first rod 41 is pulled up, and the brake mechanism 20 is actuated.

[0038] The electromagnet 34 is provided on the car 9. The movable core 35 is provided on the movable member 32. The electromagnet 34 attracts the movable core 35, thereby holding the movable member 32 in a normal position against the operating force generator 31.

[0039] The return mechanism 36 returns the movable member 32 from the operating position to the normal position against the operating force generator 31 after the brake mechanism 20 is operated. The return mechanism 36 further includes a drive device 37, a return member 38, and a return member guide 39.

[0040] The driving device 37 has a return motor 37a and a ball screw 37b. The ball screw 37b is disposed vertically on the car 9. The return motor 37a rotates the ball screw 37b.

[0041] The return member 38 is provided with a screw hole (not shown). A ball screw 37b is passed through the screw hole. The return member guide 39 is vertically erected on the cage 9. The return member guide 39 also penetrates the return member 38. As a result, the return member guide 39 prevents the return member 38 from rotating around the ball screw 37b.

[0042] The ball screw 37b rotates to move the return member 38 in the vertical direction. The return member 38 is movable in the vertical direction independently of the movable member 32.

[0043] When the movable member 32 is in the normal position, the driving device 37 is located at a position away from the movable member 32 and at a position above the operating position. Therefore, the movable member 32 can be displaced from the normal position to the operating position without interfering with the return member 38.

[0044] Fig. 7 is a front view showing a state in which the movable member 32 in Fig. 6 is in the middle of returning from the operating position to the normal position. Fig. 8 is a front view showing a state in which the movable member 32 in Fig. 7 has been returned to the normal position.

[0045] After the brake mechanism 20 is actuated, the driving device 37 moves the returning member 38 downward, whereby the returning member 38 comes into contact with the movable member 32. When the returning member 38 is moved further downward from that state, the movable member 32 is displaced to the normal position. That is, the driving device 37 moves the returning member 38, thereby moving the movable member 32 from the actuated position toward the normal position.

[0046] Next, the operation will be described. When the elevator enters an emergency state, a command to cut off the power to the electromagnet 34 is output from the safety monitoring device 6. When the power to the electromagnet 34 is cut off, the energy of the operating force generator 31 is released, the movable member 32 is displaced from the normal position to the operating position, and the first rod 41 is lifted up. This causes the braking mechanism 20 to enter an operating state, and the car 9 is braked.

[0047] When returning the brake mechanism 20 to the non-braked state, first, the return member 38 is moved downward by energizing the return motor 37a, and the movable member 32 is returned to the normal position. At this time, the first rod 41 is also displaced downward, but since the pin 41a slides within the slide hole 42a, the second rod 42 does not move and no compressive force acts on the transmission mechanism 40.

[0048] After the movable member 32 is returned to the normal position, the movable member 32 is held in the normal position by energizing the electromagnet 34. Thereafter, the ball screw 37b is rotated in the reverse direction to return the return member 38 to the initial position shown in FIG.

[0049] After the return member 38 is returned to the initial position, the car 9 is moved upward. This reduces the pressing force of each wedge member 27 against the car guide rail 11, and the braking mechanism 20 can be returned to the non-braking state.

[0050] In such an elevator safety device 50, the transmission mechanism 40 transmits the operating force from the operating mechanism 30 to the braking mechanism 20 as a tensile force, and does not transmit a compressive force. The operating mechanism 30 is also provided with a return mechanism 36. A return member 38 in the return mechanism 36 is movable independently of the movable member 32.

[0051] Therefore, even if the first rod 41 is pushed down when the movable member 32 is returned to the normal position, or even if the second rod 42 is lifted when the brake mechanism 20 is activated, no compressive force acts on the transmission mechanism 40, and buckling of the transmission mechanism 40 can be suppressed. This allows the strength of the transmission mechanism 40 to be reduced, making the transmission mechanism 40 lighter.

[0052] Moreover, in the transmission mechanism 40, the first rod 41 is connected to the second rod 42 so as to be slidable in the axial direction of the first rod 41. Therefore, the transmission of the compressive force by the transmission mechanism 40 can be more reliably limited.

[0053] Further, a slide hole 42a is provided in the second rod 42, and a pin 41a is provided in the first rod 41. Therefore, with a simple structure, the transmission of the compressive force by the transmission mechanism 40 can be restricted more reliably.

[0054] Here, the maximum sliding amount of the first rod 41 relative to the second rod 42 in a state in which the transmission mechanism 40 is separated from the brake mechanism 20 and the operating mechanism 30 is defined as A. That is, A is the length of the slide hole 42a. Also, the displacement amount of the movable member 32 between the normal position and the operating position is defined as B. In this case, it is preferable that A≧B, and it is more preferable that A>B. This makes it possible to eliminate the transmission of compressive force by the transmission mechanism 40.

[0055] Furthermore, in the first embodiment, since the operating mechanism 30 is disposed on the car 9, adjustment and maintenance work on the operating mechanism 30 can be easily performed.

[0056] Moreover, in the first embodiment, the electromagnet 34 is supported by the car 9, which has high strength and rigidity. Therefore, it is not necessary to separately provide a locking mechanism or a load receiving portion to support the electromagnet 34. Therefore, the configuration of the safety device 50 can be simplified.

[0057] Embodiment 2 9 is a front view showing an elevator car 9 according to embodiment 2. In the elevator of embodiment 2, a support base 51 is provided on the car 9.

[0058] The movable member 32 is provided on the support base 51 so as to be rotatable around a horizontal movable member shaft 32a. That is, the movable member 32 is rotatable between a normal position shown in Fig. 9 and an operating position. The operating position is a position rotated counterclockwise from the normal position in Fig. 9. As a result, the pair of movable member guides 33 are not used.

[0059] Of the working force generator 31, the electromagnetic magnet 34, the return mechanism 36, and the transmission mechanism 40, the working force generator 31 is disposed closest to the movable member shaft 32a. In other words, the electromagnetic magnet 34, the return mechanism 36, and the transmission mechanism 40 are disposed farther away from the movable member shaft 32a than the working force generator 31 is.

[0060] The return mechanism 36 and the electromagnetic magnet 34 are disposed between the operating force generator 31 and the transmission mechanism 40. Although not shown in Fig. 9, the return member guide 39 is disposed on the -X side of Fig. 9 with respect to the ball screw 37b.

[0061] Other configurations in the second embodiment are similar to those in the first embodiment.

[0062] In such an elevator safety device 50, the movable member 32 is rotatable about the movable member shaft 32a. Therefore, the amount of expansion and contraction of the working force generator 31 can be enlarged and transmitted to the transmission mechanism 40, and the amount of expansion and contraction required of the working force generator 31 can be reduced. This allows the working force generator 31 to be made smaller and less expensive.

[0063] In addition, it is possible to reduce the force required for the electromagnet 34 and the driving device 37, and to reduce the capacity of the electromagnet 34 and the driving device 37. This allows the electromagnet 34 and the driving device 37 to be made smaller and less expensive.

[0064] The arrangement order of the operating force generator 31, the electromagnetic magnet 34, the return mechanism 36, and the transmission mechanism 40 in the longitudinal direction of the movable member 32 is not necessarily limited to the order shown in Fig. 9. The longitudinal direction of the movable member 32 is the Y-axis direction in Fig. 9.

[0065] Furthermore, at least two of the components of the operating force generator 31, the electromagnet 34, the return mechanism 36, and the transmission mechanism 40 may be arranged in any order at the same position in the longitudinal direction of the movable member 32.

[0066] Embodiment 3 10 is a front view showing an elevator car 9 according to embodiment 3. In embodiment 3, the movable member shaft 32a is provided at the middle part in the longitudinal direction of the movable member 32. The return mechanism 36 is disposed on the opposite side of the movable member shaft 32a to the operating force generator 31, the electromagnet 34, and the transmission mechanism 40.

[0067] The return member 38 is disposed below the movable member 32. When the movable member 32 is returned from the operating position to the normal position, the return member 38 is moved upward.

[0068] Other configurations in the third embodiment are similar to those in the second embodiment.

[0069] In this way, since the movable member 32 is rotatable about the movable member shaft 32a, the degree of freedom in arranging the working force generator 31, the electromagnetic magnet 34, the return mechanism 36, and the transmission mechanism 40 can be improved.

[0070] In the first to third embodiments, it is not always necessary to completely eliminate the transmission of compressive force by the transmission mechanism 40 as long as the buckling of the transmission mechanism 40 can be suppressed.

[0071] In addition, in the first to third embodiments, the first rod 41 may be provided with a slide hole, and the second rod 42 may be provided with a pin.

[0072] In the first to third embodiments, the configuration for slidably connecting the first rod 41 to the second rod 42 is not limited to the combination of a slide hole and a pin.

[0073] Embodiment 4 Next, Fig. 11 is a front view showing an elevator car 9 according to embodiment 4. A flexible cable 43 is used as the transmission mechanism 40 in embodiment 4. The upper end of cable 43 is connected to movable member 32. The lower end of cable 43 is connected to operating lever 21.

[0074] For example, a rope, a wire, or a belt is used as the cord 43. The cord 43 transmits the operating force from the operating mechanism 30 to the brake mechanism 20 as a tensile force, and does not transmit a compressive force between the brake mechanism 20 and the operating mechanism 30.

[0075] Other configurations in the fourth embodiment are similar to those in the first embodiment.

[0076] In this way, even when the transmission mechanism 40 made up of the cable members 43 is used, it is possible to obtain the same effects as those of the first embodiment. Furthermore, the configuration of the transmission mechanism 40 can be simplified, and the weight of the transmission mechanism 40 can be further reduced.

[0077] The transmission mechanism 40 in the second and third embodiments may be replaced with the cable 43 in the fourth embodiment.

[0078] Furthermore, the transmission mechanism 40 may be a combination of one or more rods and a cable. For example, a cable may be used instead of the first rod 41 or the second rod 42 in the first to third embodiments. Furthermore, two rods may be connected by a cable.

[0079] In addition, in the first to fourth embodiments, the electromagnet 34 may be provided on the movable member 32, and the movable iron core 35 may be provided on the car 9.

[0080] In addition, in the first to fourth embodiments, the movable core 35 may be omitted, and the movable member 32 may be directly attracted by the electromagnetic magnet 34.

[0081] In the first to fourth embodiments, the configuration of the driving device 37 is not limited to the configuration in which the return motor 37a rotates the ball screw 37b. The driving device 37 may be configured to use, for example, a trapezoidal screw or a belt as long as it can move the return member 38.

[0082] In addition, the return mechanism 36 does not necessarily have to return the movable member 32 to the normal position. In other words, the movable member 32 may be returned to the normal position by the attractive force of the electromagnet 34 after the movable member 32 is returned to near the normal position by the return mechanism 36.

[0083] Also, the safety device 50 may be mounted on the counterweight 10. That is, the lifting body may be the counterweight 10.

[0084] Furthermore, the brake mechanism 20 may be disposed in a location other than the lower part of the lifting body, for example, in the upper part.

[0085] Furthermore, the operating mechanism 30 may be disposed in a location other than the upper part of the lifting body, for example, in the lower part.

[0086] Furthermore, the layout of the entire elevator is not limited to the layout in Fig. 1. For example, the roping system may be a 2:1 roping system.

[0087] The elevator may be a machine room-less elevator, a double deck elevator, a one-shaft multi-car elevator, etc. In the one-shaft multi-car elevator, an upper car and a lower car located directly below the upper car each independently ascend and descend in a common elevator shaft. [Explanation of symbols]

[0088] 1 elevator shaft, 9 cage (elevating body), 20 braking mechanism, 30 operating mechanism, 31 operating force generating body, 32 movable member, 32a movable member shaft, 34 electromagnetic magnet, 36 return mechanism, 37 drive device, 38 return member, 40 transmission mechanism, 41 first rod, 41a pin, 42 second rod, 42a slide hole, 43 cable body, 50 safety device.

Claims

1. a braking mechanism provided on a lifting body that moves up and down the elevator shaft and configured to brake the movement of the lifting body; an actuation mechanism provided on the lifting body and generating an actuation force for actuating the braking mechanism; and a transmission mechanism for transmitting the actuating force from the actuating mechanism to the braking mechanism; Equipped with The actuation mechanism includes: an actuation force generator that generates the actuation force; a movable member connected to the transmission mechanism, receiving the actuating force from the actuating force generator, and displaceable between a normal position which is a position when the brake mechanism is in a non-actuated state and an actuated position which is a position when the brake mechanism is in an actuated state; an electromagnet that holds the movable member in the normal position against the operating force generator; a return mechanism that returns the movable member to the normal position from the operating position against the operating force generator; It has the transmission mechanism has a slide hole and a pin inserted into the slide hole and movable along the slide hole so as to transmit the operating force as a tensile force and limit transmission of a compressive force; The return mechanism includes: A return member that is movable independently of the movable member; a drive device that moves the return member to move the movable member from the operating position to the normal position; An elevator safety device having:

2. A braking mechanism provided on a lifting body that moves up and down a hoistway and brakes the movement of the lifting body; an actuation mechanism provided on the lifting body and generating an actuation force for actuating the braking mechanism; and a transmission mechanism for transmitting the actuating force from the actuating mechanism to the braking mechanism; Equipped with The actuation mechanism includes: an actuation force generator that generates the actuation force; a movable member connected to the transmission mechanism, receiving the actuating force from the actuating force generator, and displaceable between a normal position which is a position when the brake mechanism is in a non-actuated state and an actuated position which is a position when the brake mechanism is in an actuated state; an electromagnet that holds the movable member in the normal position against the operating force generator; a return mechanism that returns the movable member to the normal position from the operating position against the operating force generator; It has The transmission mechanism includes: A first rod connected to the actuation mechanism; A second rod connected to the braking mechanism; It has An elevator safety device, wherein the first rod is connected to the second rod so as to be slidable in the axial direction of the first rod.

3. A slide hole is provided in either the first rod or the second rod, A pin is provided on the other of the first rod and the second rod, 3. The elevator safety device according to claim 2, wherein the pin is inserted into the slide hole and is movable along the slide hole.

4. A braking mechanism provided on a lifting body that moves up and down a hoistway and brakes the movement of the lifting body; an actuation mechanism provided on the lifting body and generating an actuation force for actuating the braking mechanism; and a transmission mechanism for transmitting the actuating force from the actuating mechanism to the braking mechanism; Equipped with The actuation mechanism includes: an actuation force generator that generates the actuation force; a movable member that is connected to the transmission mechanism, receives the actuating force from the actuating force generator, and is displaceable in the vertical direction between a normal position that is a position when the brake mechanism is in a non-actuated state and an actuated position that is a position when the brake mechanism is in an actuated state; an electromagnet that holds the movable member in the normal position against the operating force generator; a return mechanism that returns the movable member to the normal position from the operating position against the operating force generator; It has the transmission mechanism is configured to transmit the actuation force as a tensile force and to limit the transmission of a compressive force; The return mechanism includes: A return member that is movable independently of the movable member; a drive device that moves the return member to move the movable member from the operating position to the normal position; An elevator safety device having:

5. 4. The elevator safety device according to claim 1, wherein the movable member is rotatable about a movable member axis.

6. The lifting body is a car, 5. The elevator safety device according to claim 1, wherein the operating mechanism is provided on an upper portion of the car.

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