Safety device of elevator

Abstract

In a safety device for an elevator, an operating mechanism has an operating force generating body, a movable member, an electromagnet, and a reset mechanism. The movable member is displaceable between a normal position and an operating position. The transmission mechanism is configured so as to transmit an operating force from the operating mechanism as a tensile force to the brake mechanism, and restrict the transmission of a compressive force. The return mechanism has: a return member that is independently movable with respect to the movable member; and a drive device that moves the movable member from the operating position to the normal position side by moving the return member.

Description

Technical Field

[0001] The present disclosure relates to a safety device for an elevator. Background Art

[0002] In the conventional elevator safety device, when the detection unit detects that the lifting body is falling at an excessive speed, the power supply to the electromagnet is cut off. As a result, the compression force of the spring is released, and the pair of small wedges are pulled up. When the lifting body further falls from this state, the pair of wedges are pulled up by the pair of connecting parts, and the lifting body stops (for example, refer to Patent Document 1).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: International Publication No. 2022 / 003768 Summary of the invention

[0006] Problems to be solved by the invention

[0007] In the conventional elevator safety device as described above, since the driving mechanism and the braking mechanism are connected via the lifting rod, a large compressive force is applied to the lifting rod during the reset action after the braking action. Therefore, it is necessary to increase the strength of the lifting rod so that the lifting rod will not be buckled, and the device as a whole becomes heavier.

[0008] The present disclosure has been made to solve the above-mentioned problems, and an object of the present disclosure is to obtain an elevator safety device capable of reducing the weight of a transmission mechanism.

[0009] Means for solving problems

[0010] The safety device of the elevator disclosed in the present invention comprises: a braking mechanism, which is arranged on a lifting body that is raised and lowered in a hoistway and brakes the movement of the lifting body; an operating mechanism, which is arranged on the lifting body and generates an operating force that causes the braking mechanism to operate; and a transmission mechanism, which transmits the operating force from the operating mechanism to the braking mechanism, the operating mechanism having: an operating force generating body that generates an operating force; a movable member that is connected to the transmission mechanism and receives an operating force from the operating force generating body and can be displaced between a normal position and an operating position, the normal position being a position when the braking mechanism is in a non-operating state, and the operating position being a position when the braking mechanism is in an operating state; an electromagnet that overcomes the operating force generating body and keeps the movable member in the normal position; and a reset mechanism that overcomes the operating force generating body and resets the movable member from the operating position to the normal position, the transmission mechanism is configured to transmit the operating force as a tensile force and limit the transmission of a compressive force, the reset mechanism having: a reset member that can move independently relative to the movable member; and a drive device that moves the reset member to move the movable member from the operating position to the normal position side.

[0011] Effects of the Invention

[0012] According to the elevator safety device of the present disclosure, it is possible to achieve weight reduction of the transmission mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic configuration diagram showing an elevator according to Embodiment 1.

[0014] Figure 2 It is shown Figure 1 Front view of the lower part of the car.

[0015] Figure 3 It is shown Figure 2 Side view of the main parts of the brake mechanism.

[0016] Figure 4 It is shown Figure 3 A side view of the braking mechanism in action.

[0017] Figure 5 It is shown Figure 1 Front view of the car.

[0018] Figure 6 It is shown Figure 5 A front view of the braking mechanism in a state of operation.

[0019] Figure 7 It shows that Figure 6 A front view of a movable part in the middle of returning from an operating position to a normal position.

[0020] Figure 8 It shows that Figure 7 The front view of the state after the movable part is restored to the normal position.

[0021] Fig. 9 This is a front view showing the elevator car according to the second embodiment.

[0022] Fig.10 This is a front view showing a car of an elevator according to Embodiment 3.

[0023] Fig.11 This is a front view showing an elevator car according to Embodiment 4. DETAILED DESCRIPTION

[0024] Hereinafter, embodiments will be described with reference to the drawings.

[0025] Implementation method 1.

[0026] Figure 1 1 is a schematic diagram showing the structure of an elevator according to Embodiment 1. Figure 1In the elevator, a machine room 2 is provided on a hoistway 1. In the machine room 2, a traction machine 3, a deflection wheel 4, an elevator control device 5 and a safety monitoring device 6 are provided.

[0027] The hoisting machine 3 has a driving sheave 7, a hoisting machine motor (not shown), and a hoisting machine brake (not shown). The hoisting machine motor rotates the driving sheave 7. The hoisting machine brake keeps the driving sheave 7 stationary. In addition, the hoisting machine brake brakes the rotation of the driving sheave 7.

[0028] The suspension body 8 is hung around the driving sheave 7 and the deflector pulley 4. A plurality of ropes or a plurality of belts are used as the suspension body 8. The first end of the suspension body 8 is connected to the car 9. The second end of the suspension body 8 is connected to the counterweight 10.

[0029] The car 9 and the counterweight 10 are suspended by the suspension body 8, and the car 9 and the counterweight 10 are raised and lowered in the hoistway 1 by rotating the driving sheave 7. The elevator control device 5 controls the operation of the car 9 by controlling the traction machine 3.

[0030] A pair of car guide rails 11 and a pair of counterweight guide rails 12 are provided in the hoistway 1. The pair of car guide rails 11 guide the raising and lowering of the car 9. The pair of counterweight guide rails 12 guide the raising and lowering of the counterweight 10. Figure 1 Only one car guide rail 11 and one counterweight guide rail 12 are shown.

[0031] A safety device 50 is mounted on the car 9. The lifting structure in the first embodiment is the car 9.

[0032] The safety monitoring device 6 monitors whether the elevator is in an emergency state. Examples of emergency states include a state where the descending speed of the car 9 reaches an excessive speed, a state where the downward acceleration of the car 9 reaches an excessive acceleration, etc. When the elevator reaches an emergency state, the safety monitoring device 6 causes the car 9 to stop urgently through the safety device 50.

[0033] The safety device 50 includes a braking mechanism 20 , an operating mechanism 30 , and a transmission mechanism 40 .

[0034] The brake mechanism 20 is provided at the lower part of the car 9. In addition, the brake mechanism 20 is an emergency stop device which brakes the movement of the car 9.

[0035] The operating mechanism 30 is provided at an upper portion of the car 9 at a distance in the vertical direction from the brake mechanism 20. The operating mechanism 30 generates an operating force for operating the brake mechanism 20.

[0036] The transmission mechanism 40 transmits the operating force from the operating mechanism 30 to the brake mechanism 20 .

[0037] Figure 2 It is shown Figure 19 is a front view of the lower part of the car 9. The brake mechanism 20 has an operating rod 21, a linkage rod 22 and a connecting rod 23.

[0038] The operating rod 21 is rotatable about a horizontal operating rod shaft 21a with respect to the car 9 together with the operating rod shaft 21a. The interlocking rod 22 is rotatable about a horizontal interlocking rod shaft 22a with respect to the car 9 together with the interlocking rod shaft 22a.

[0039] The connecting rod 23 is rotatably connected to the operating rod 21 and is rotatably connected to the interlocking rod 22. Thus, the connecting rod 23 connects the operating rod 21 and the interlocking rod 22.

[0040] The transmission mechanism 40 includes a first rod 41 and a second rod 42. The first rod 41 is connected to the actuation mechanism 30. The second rod 42 is rotatably connected to the actuation rod 21.

[0041] The second rod 42 is provided with a sliding hole 42a. The first rod 41 is provided with a pin 41a. The pin 41a is inserted into the sliding hole 42a. The pin 41a is movable in the sliding hole 42a along the sliding hole 42a.

[0042] Thus, the first rod 41 is connected to the second rod 42 in a manner that allows sliding along the axial direction of the first rod 41. In addition, by 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 restrict the transmission of the compressive force. The transmission mechanism 40 of the first embodiment is configured not to transmit the compressive force between the brake mechanism 20 and the operating mechanism 30.

[0043] When the brake mechanism 20 is activated, Figure 2 The first rod 41 is lifted in the state of being pulled. As a result, the second rod 42 is also lifted, and the actuating rod 21 and the actuating rod shaft 21a are moved together. Figure 2 The rotation of the action rod 21 is transmitted to the linkage rod 22 via the connecting rod 23, and the linkage rod 22 and the linkage rod shaft 22a rotate in the counterclockwise direction. Figure 2 The clockwise rotation.

[0044] Figure 3 It is shown Figure 2 20 is a side view of the main parts of the brake mechanism 20. Figure 4 It is shown Figure 3 A side view of the braking mechanism 20 in the operating state.

[0045] The brake mechanism 20 has Figure 2 In addition to the structure shown, there are a frame 24, a pair of wedge guides 25, a pair of wedge guide springs 26, a pair of wedge components 27, and a pair of wedge connecting links 28. Figure 3In the embodiment, a pair of wedge-connecting links 28 are omitted.

[0046] The frame 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 24. Each wedge member 27 is connected to the operating rod shaft 21a via a corresponding wedge connection link 28.

[0047] When the brake mechanism 20 is not in operation, the wedge members 27 are spaced apart from each other and face each other with respect to the car guide rail 11. When the brake mechanism 20 is in operation, the operation lever shaft 21a rotates, so that the pair of wedge members 27 moves upward with respect to the frame 24. At this time, each wedge member 27 is guided by the corresponding wedge guide 25 to approach the car guide rail 11 and contact the car guide rail 11.

[0048] When each wedge member 27 contacts the car guide rail 11, a braking force is generated in the direction opposite to the falling direction of the car 9, so that the car 9 stops. The magnitude of the braking force is the product of the pressing force of the pair of wedge members 27 on the car guide rail 11 generated by the pair of wedge guide springs 26 and the friction coefficient between each wedge member 27 and the car guide rail 11.

[0049] In addition, a coupling rod 22a is also provided on the side of the coupling rod shaft 22a. Figure 3 and Figure 4 Then, when the brake mechanism 20 is actuated, the pair of car guide rails 11 are simultaneously held by the brake mechanism 20 .

[0050] Figure 5 It is shown Figure 1 A front view of the car 9. Figure 6 It is shown Figure 5 The front view of the brake mechanism 20 in the state of operation.

[0051] The operating mechanism 30 includes an operating force generating body 31 , a movable member 32 , a pair of movable member guides 33 , an electromagnet 34 , a movable iron core 35 , and a return mechanism 36 .

[0052] The operating force generating body 31 is provided between the car 9 and the movable member 32. The operating force generating body 31 generates an operating force for operating the brake mechanism 20. As the operating force generating body 31, for example, a coil spring is used.

[0053] The movable member 32 can be Figure 5 The usual position shown is Figure 6 The operating positions shown are displaced in the up-down direction. The normal position is the position of the movable member 32 when the brake mechanism 20 is in the non-operating state. At this time, the operating force generating body 31 is compressed, and the movable member 32 receives the operating force from the operating force generating body 31. The operating position is the position of the movable member 32 when the brake mechanism 20 is in the operating state.

[0054] The first rod 41 is rotatably connected to the movable member 32. The first rod 41 is pulled up by the displacement of the movable member 32 to the operating position, so that the brake mechanism 20 is operated.

[0055] The electromagnet 34 is provided on the car 9. The movable iron core 35 is provided on the movable member 32. The electromagnet 34 attracts the movable iron core 35, thereby holding the movable member 32 at a normal position against the operating force generating body 31.

[0056] After the brake mechanism 20 is actuated, the return mechanism 36 returns the movable member 32 from the actuated position to the normal position against the actuation force generating body 31. The return mechanism 36 includes a drive device 37, a return member 38, and a return member guide 39.

[0057] The driving device 37 includes a return motor 37a and a ball screw 37b. The ball screw 37b is vertically arranged on the car 9. The return motor 37a rotates the ball screw 37b.

[0058] The reset member 38 is provided with a threaded hole (not shown). The ball screw 37b is inserted through the threaded hole. The reset member guide 39 stands vertically on the car 9. The reset member guide 39 penetrates the reset member 38. Thus, the reset member guide 39 prevents the reset member 38 from rotating around the ball screw 37b.

[0059] The return member 38 is moved in the up-down direction by the rotation of the ball screw 37 b. The return member 38 is movable in the up-down direction independently of the movable member 32 .

[0060] When the movable member 32 is located at the normal position, the drive device 37 is located away from the movable member 32 and 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.

[0061] Figure 7 It shows that Figure 6 1 is a front view of the movable member 32 in the middle of returning from the operating position to the normal position. Figure 8 It shows that Figure 7 The movable part 32 is a front view of the state after being returned to the normal position.

[0062] After the brake mechanism 20 is actuated, if the reset member 38 is moved downward by the driving device 37, the reset member 38 contacts the movable member 32. If the reset member 38 is further moved downward from this state, the movable member 32 is displaced to the normal position. That is, the driving device 37 moves the movable member 32 from the actuated position to the normal position side by moving the reset member 38.

[0063] Next, the operation is described. When the elevator enters an emergency state, the safety monitoring device 6 outputs a command to cut off the power supply to the electromagnet 34. When the power supply to the electromagnet 34 is cut off, the energy of the operating force generating body 31 is released, the movable member 32 is displaced from the normal position to the operating position, and the first rod 41 is pulled up. As a result, the brake mechanism 20 enters the operating state, and the car 9 is braked.

[0064] When the brake mechanism 20 is reset to the non-braking state, first, the reset member 38 is moved downward by energizing the reset motor 37a, so that the movable member 32 returns to the normal position. At this time, the first rod 41 is also displaced downward, but since the pin 41a slides in the sliding hole 42a, the second rod 42 does not move, and the compression force does not act on the transmission mechanism 40.

[0065] When the movable member 32 returns to the normal position, the movable member 32 is held in the normal position by energizing the electromagnet 34. Then, the ball screw 37b is rotated in the reverse direction to return the reset member 38 to the normal position. Figure 5 Initial position shown.

[0066] After returning the reset member 38 to the initial position, the car 9 is moved upward. As a result, the pressing force of each wedge member 27 on the car guide rail 11 is reduced, and the brake mechanism 20 can be reset to the non-braking state.

[0067] In such an elevator safety device 50, the transmission mechanism 40 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. In addition, the operating mechanism 30 is provided with a reset mechanism 36. In addition, the reset member 38 of the reset mechanism 36 can move independently relative to the movable member 32.

[0068] Therefore, even if the first rod 41 is pressed down when the movable member 32 is returned to the normal position, or even if the second rod 42 is pulled up when the brake mechanism 20 is actuated, the compression force does not act on the transmission mechanism 40, and the buckling of the transmission mechanism 40 can be suppressed. As a result, the strength of the transmission mechanism 40 can be reduced, and the transmission mechanism 40 can be made lighter.

[0069] Furthermore, 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 restricted.

[0070] Furthermore, the second rod 42 is provided with a sliding hole 42a, and the first rod 41 is provided with a pin 41a. Therefore, the transmission of the compressive force by the transmission mechanism 40 can be more reliably restricted with a simple structure.

[0071] Here, the maximum sliding amount of the first rod 41 relative to the second rod 42 in the state where the transmission mechanism 40 is separated from the brake mechanism 20 and the actuation mechanism 30 is assumed to be A. That is, A is the length of the sliding hole 42a. In addition, the displacement amount of the movable member 32 between the normal position and the actuation position is assumed to be B. In this case, A ≥ B is preferred, and A> B is more preferred. In this way, the transmission of the compressive force by the transmission mechanism 40 can be eliminated.

[0072] Furthermore, in Embodiment 1, since the motion mechanism 30 is disposed on the car 9, adjustment work and maintenance work on the motion mechanism 30 can be easily performed.

[0073] Furthermore, in Embodiment 1, the electromagnet 34 is supported by the car 9 having high strength and rigidity. Therefore, it is not necessary to separately provide a locking mechanism or a load receiving portion in order to support the electromagnet 34. Therefore, the structure of the safety device 50 can be simplified.

[0074] Implementation method 2.

[0075] Next, Fig. 9 This is a front view showing the car 9 of the elevator according to Embodiment 2. In the elevator according to Embodiment 2, a support platform 51 is provided on the car 9.

[0076] The movable member 32 is provided on the support stand 51 so as to be rotatable about the horizontal movable member shaft 32a. Fig. 9 The operating position is the position from which the Fig. 9 Thus, a pair of movable member guides 33 are not used.

[0077] The force generating body 31 is located closest to the movable member shaft 32a among the force generating body 31, the electromagnet 34, the return mechanism 36 and the transmission mechanism 40. That is, the electromagnet 34, the return mechanism 36 and the transmission mechanism 40 are located farther from the movable member shaft 32a than the force generating body 31.

[0078] The reset mechanism 36 and the electromagnet 34 are arranged between the operating force generating body 31 and the transmission mechanism 40. Fig. 9 Not shown, but arranged relative to the ball screw 37b Fig. 9 -X side.

[0079] The other structures of the second embodiment are the same as those of the first embodiment.

[0080] In such an elevator safety device 50, the movable member 32 can rotate around the movable member shaft 32a. Therefore, the expansion and contraction amount of the operating force generating body 31 can be enlarged and transmitted to the transmission mechanism 40, and the expansion and contraction amount required for the operating force generating body 31 can be reduced. Thus, the operating force generating body 31 can be miniaturized and reduced in cost.

[0081] Furthermore, the force required for the electromagnet 34 and the driving device 37 can be reduced, and the capacity of the electromagnet 34 and the driving device 37 can be reduced. Thus, the electromagnet 34 and the driving device 37 can be miniaturized and reduced in cost.

[0082] In addition, the arrangement order of the action force generating body 31, the electromagnet 34, the return mechanism 36, and the transmission mechanism 40 in the longitudinal direction of the movable member 32 is not necessarily limited to Fig. 9 The length direction of the movable part 32 is Fig. 9 Y-axis direction.

[0083] Furthermore, at least two of the operating force generating body 31 , the electromagnet 34 , the return mechanism 36 , and the transmission mechanism 40 may be arranged in an arbitrary order at the same position in the longitudinal direction of the movable member 32 .

[0084] Implementation method 3.

[0085] Next, Fig.10 1 is a front view showing the elevator car 9 of Embodiment 3. In Embodiment 3, the movable member shaft 32a is provided at the middle portion in the longitudinal direction of the movable member 32. The return mechanism 36 is arranged on the side opposite to the operating force generating body 31, the electromagnet 34 and the transmission mechanism 40 with respect to the movable member shaft 32a.

[0086] 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.

[0087] The other structures of the third embodiment are the same as those of the second embodiment.

[0088] In this way, the movable member 32 can rotate around the movable member shaft 32 a , thereby increasing the degree of freedom in arrangement of the operating force generating body 31 , the electromagnet 34 , the return mechanism 36 , and the transmission mechanism 40 .

[0089] In the first to third embodiments, as long as the buckling of the transmission mechanism 40 can be suppressed, the transmission of the compressive force by the transmission mechanism 40 does not necessarily have to be completely eliminated.

[0090] In the first to third embodiments, a sliding hole may be provided in the first rod 41 , and a pin may be provided in the second rod 42 .

[0091] In the first to third embodiments, the structure for slidably connecting the first rod 41 and the second rod 42 is not limited to the combination of the sliding hole and the pin.

[0092] Implementation method 4.

[0093] Next, Fig.11 1 is a front view showing the elevator car 9 of Embodiment 4. A flexible cable body 43 is used as the transmission mechanism 40 of Embodiment 4. The upper end of the cable body 43 is connected to the movable member 32. The lower end of the cable body 43 is connected to the operating rod 21.

[0094] For example, a rope, a wire, or a belt is used as the cable body 43. The cable body 43 transmits the operating force from the operating mechanism 30 to the brake mechanism 20 as a tensile force, and does not transmit the compressive force between the brake mechanism 20 and the operating mechanism 30.

[0095] The other structures of the fourth embodiment are the same as those of the first embodiment.

[0096] In this way, even when the transmission mechanism 40 composed of the string body 43 is used, the same effects as those of the first embodiment can be obtained. In addition, the structure of the transmission mechanism 40 can be simplified, and the transmission mechanism 40 can be further reduced in weight.

[0097] In addition, the transmission mechanism 40 in the second and third embodiments may be replaced with the string body 43 in the fourth embodiment.

[0098] Furthermore, the transmission mechanism 40 may be a combination of one or more rods and a cable body. For example, a cable body may be used instead of the first rod 41 or the second rod 42 of Embodiments 1 to 3. Furthermore, two rods may be connected by a cable body.

[0099] Furthermore, in Embodiments 1 to 4, the electromagnet 34 may be provided in the movable member 32 , and the movable iron core 35 may be provided in the car 9 .

[0100] In the first to fourth embodiments, the movable iron core 35 may be omitted and the movable member 32 may be directly attracted by the electromagnet 34 .

[0101] In Embodiments 1 to 4, the structure of the drive device 37 is not limited to the structure in which the return motor 37a rotates the ball screw 37b. The drive device 37 may have any structure as long as it can move the return member 38, and may use a trapezoidal screw or a belt, for example.

[0102] The return mechanism 36 does not necessarily need to return the movable member 32 to the normal position. That is, after the return mechanism 36 returns the movable member 32 to the vicinity of the normal position, the attractive force of the electromagnet 34 may return the movable member 32 to the normal position.

[0103] In addition, the safety device 50 may be mounted on the counterweight 10. That is, the counterweight 10 may be the lifting body.

[0104] In addition, the brake mechanism 20 may be arranged at a location other than the lower portion of the lifting body, for example, at the upper portion.

[0105] In addition, the operating mechanism 30 may be arranged at a location other than the upper portion of the lifting body, for example, at the lower portion.

[0106] In addition, the overall layout of the elevator is not limited to Figure 1 For example, the roping method may also be a 2:1 roping method.

[0107] In addition, the elevator may be a machine room-less elevator, a double-deck elevator, a single-shaft multi-car elevator, etc. The single-shaft multi-car elevator is a system in which an upper car and a lower car arranged just below the upper car are independently raised and lowered in a common shaft.

[0108] Description of symbols

[0109] 1: Hoistway; 9: Car (lifting body); 20: Braking mechanism; 30: Actuating mechanism; 31: Actuating force generating body; 32: Movable part; 32a: Movable part shaft; 34: Electromagnet; 36: Reset mechanism; 37: Driving device; 38: Reset part; 40: Transmission mechanism; 41: First rod; 41a: Pin; 42: Second rod; 42a: Sliding hole; 43: Rope body; 50: Safety device.

Claims

1. A safety device for an elevator, wherein: The elevator safety device has: A brake mechanism, which is provided on a lifting body that is lifted and lowered in the hoistway and brakes the movement of the lifting body; An actuating mechanism, which is disposed on the lifting body and generates an actuating force to actuate the braking mechanism; as well as a transmission mechanism that transmits the actuating force from the actuating mechanism to the braking mechanism, The action mechanism has: an action force generating body, which generates the action force; a movable member connected to the transmission mechanism and receiving the operating force from the operating force generating body, and capable of being displaced between a normal position and an operating position, wherein the normal position is a position when the braking mechanism is in a non-operating state, and the operating position is a position when the braking mechanism is in an operating state; an electromagnet that overcomes the action force generating body to hold the movable member in the normal position; and a reset mechanism that overcomes the action force generating body to reset the movable member from the action position to the normal position, The transmission mechanism is configured to transmit the operating force as a tensile force and to restrict the transmission of a compressive force. The reset mechanism has: a reset member capable of moving independently relative to the movable member; as well as The driving device moves the return member to move the movable member from the operating position to the normal position side.

2. The safety device for an elevator according to claim 1, wherein: The transmission mechanism comprises: a first rod connected to the action mechanism; and a second rod connected to the brake mechanism, The first rod is connected to the second rod in a slidable manner in an axial direction of the first rod.

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

4. The safety device for an elevator according to claim 1, wherein: The transmission mechanism uses a flexible cable body.

5. The safety device for an elevator according to any one of claims 1 to 4, wherein: The movable member is rotatable around a movable member axis.

6. The safety device for an elevator according to any one of claims 1 to 5, wherein: The lifting body is a car. The action mechanism is arranged on the upper part of the car.

Images