WO2001023293A1

WO2001023293A1 - Elevator device

Info

Publication number: WO2001023293A1
Application number: PCT/JP1999/005355
Authority: WO
Inventors: Mitsuru Sakai; Minoru Onodera; Akihiro Sato
Original assignee: Hitachi, Ltd.
Priority date: 1999-09-29
Filing date: 1999-09-29
Publication date: 2001-04-05
Also published as: JP4106908B2

Abstract

The elevator device which comprises a safety shoe projecting from the front edge of an elevator door and having a function by which upon retraction either door closure is prevented or door opening is effected, a means for retracting the safety shoe in the vicinity of the full door opening position, and a means for canceling the function of the safety shoe in the vicinity of the full opening position of the door. This is intended to positively cancel the function of the safety shoe in the vicinity of the full door opening position. Therefore, without providing a complicated mechanism for displacing the position of a switch for detecting the retraction of the safety shoe, retraction of the safety shoe in the vicinity of the full door opening position is made possible, in the door closable position, simply by using the nullification means (the means for canceling the function of the safety shoe).

Description

Specification

Elepetator device

Technical field

The present invention relates to an elevator, and more particularly to control of an elevator door.

Background art

In general, an elevator door is provided with a safety door that protrudes from the front edge of the door. It is well known that doors open (or do not close).

In this safety door, the elevator door protrudes from the front edge of the door even when the door is fully open. Therefore, there is a high possibility that the luggage, etc., comes into contact with the safety system when loading or unloading the luggage, and the mechanism of the safety system is deformed and may break down.

Conventional technologies for retracting this safety shoe near the fully opened position of an elevator door include, for example, those disclosed in Japanese Patent Application Laid-Open Nos. 51-81340 and 54-108445. .

If the safety show is forcibly retracted near the door fully open position, the door cannot be closed in response to the operation of the switch that detects the safety show retreat. Therefore, the above-mentioned prior art prevents the above-mentioned state, and furthermore, does not invalidate a function of the safety door (a function of opening the door (do not close the door by retreating the safety door)). In the vicinity, the safety shoe retreats in accordance with the displacement of the switch position. Therefore, in the above-described conventional technology, the mechanism for displacing the position of the switch near the door fully open position is complicated, and it is difficult to adjust the safety shoe so as to retreat near the door fully open position. Disclosure of the invention

A first object of the present invention is to provide an elevator device in which the mechanism for retracting the safety switch near the door fully open position is simple, and the adjustment is easy.

A second object of the present invention is to provide an elevator device with further improved safety.

In one aspect of the present invention, the safety protruding from the front edge of the door of the elevator is provided with a function of preventing the door from closing or opening the door by retreating. Means for retracting the show and means for disabling the function of the safety show near the fully opened position of the door are provided.

This is to proactively invalidate the function of the safety system near the fully opened position of the door. Therefore, it is not necessary to provide a complicated mechanism such as displacing the position of the switch for detecting the retreat of the safety shoe as in the above-mentioned prior art, but to invalidate the mechanism (the function of the safety shoe described above). By simply using the method of disabling, it is possible to retract the safety show near the fully opened position of the door while the door can be closed. In other words, since the mechanism for retracting the safety shoe near the door fully open position is simplified, it is easy to adjust the safety shoe to retract near the door fully open position.

Also, in another aspect of the invention, the front edge of the elevator door protrudes. A safety system having a function to prevent the door from being closed or opened by retracting and retracting; a means for retracting the safety system near the fully opened position of the door; and a method for reversing the safety system near the fully opened position of the door. Means for disabling the function; and means for restoring the function of the safety show when the safety show retreats so as to be larger than the retreat distance of the safety show retreated by the retreating means.

As a result, even if the safety tissue function is disabled near the door fully open, the safety show function is restored at the door fully open position, so the safety show is pushed by hand at the fully open position. If it is, the door does not close and safety can be improved. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is an overall configuration diagram showing an elevator apparatus according to one embodiment of the present invention. FIG. 2 is a diagram illustrating a configuration around the door 1 in a normal state of the elevator apparatus according to the present embodiment. FIG. 3 is a partially enlarged view showing the elevator apparatus of the present embodiment before the door 1 is in a normal state and near the door fully open position. FIG. 4 is a partially enlarged view showing the elevator apparatus of the present embodiment in which the position of the door 1 is fully opened. FIG. 5 is a partially enlarged view showing the elevator apparatus of the present embodiment in a state where the position of the door 1 is fully opened and the safety switch 29 is further retracted due to an external factor. FIG. 6 is a flow chart showing the processing contents of the logical unit 18 1 shown in FIG. FIG. 7 is a diagram showing a positional relationship between a normal door and a safety show. FIG. 8 is a diagram showing a positional relationship between the door and the safety seat at the door fully open position. Fig. 9 is a diagram showing the positional relationship between the door and the safety door when the safety door is retracted due to external factors at the door fully open position. Fig. 10 shows the state of the detection switches 31 and 35 in the normal state. Fig. 11 shows the state of the detection switches 31 and 35 near the fully opened door. It is. FIG. 12 is a diagram showing the states of the detection switches 31 and 35 when the safety switch 29 further retreats due to an external factor at the door fully opened position. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an overall configuration diagram showing an elevator apparatus according to one embodiment of the present invention.

As shown in FIG. 1, a three-phase induction motor (motor) 5 that opens and closes a door 1 through a pelt 2, pulleys 3 and 4, and a single-phase AC power supply 6 are controlled by a rectifier 7. The DC voltage is converted to DC, the rectified DC voltage ripple is smoothed by the capacitor 8, the DC voltage is converted to AC by the inverter 9, and the motor 5 is driven by the output of the inverter 9. The motor drive circuit 10 for speed control, the gate driver 11 for driving the IGBT gate composing the inverter 9, the door opening / closing command from the elevator control device 12, the signal from the encoder 13, The door open end detection switch 14, closed end detection switch 15, deceleration point detection switch 16 when the door is open, and deceleration point detection switch 17 when the door is closed are processed and the door is processed. Calculates the speed command of 1 and outputs the gate drive 1 1 Through to constitute a microphone B Computer one (My co down) 1 8 for outputting a driving signal to the gate of the inverter 9. Here, the encoder 13 generates an output pulse proportional to the rotation speed of the motor 5. In addition, a cam switch 19 is attached to the door 1, and by moving the cam switch 19, the door open end detection switch 14, the closed end detection switch 15 and the deceleration when the door is opened. Activate the point detection switch 16 and the deceleration point detection switch 17 when the door is closed. Next, the configuration near the door 1 will be described with reference to FIG.

Fig. 2 is a diagram showing the configuration near door 1 during normal times (other than near the door fully open position).

A hanger 20 is fixed above the door 1, and a roller 21 rotatably mounted on the hanger 20 rolls horizontally on a door rail 23 fixed to a rail frame 22. Door 1 is opened and closed.

A guide shoe 24 is attached to the lower end of the door 1, and the guide shoe 24 slides in a groove of a sill 25 provided on the floor.

The center of the lever 26a is fixed to the door 1 by the rotation support part 27a, and the end of the lever 26b at the door open side is fixed to the door 1 by the rotation support part 27b.

26 b is fixed to the door 1 so as to be rotatable around the rotation support portions 27 a and 27 b. The ends (upper ends) of the doors 26a and 26b on the door closing side are connected to the safety housing 29 by the rotary support portions 28a and 28b. I have. The safety front 29 is formed by levers 26a and 26b, the rotation support parts 27a and 27b, the rotation support parts 28a and 28b, and the weight of the safety safety 29, and the door front edge. It is more prominent. In addition, with these configurations, the safety door 29 can be retracted in the door opening direction.

Stopper so that the lever 26a is sandwiched under the rotary support 27a.

30 a and 30 b are provided. The stoppers 30a and 30b restrict the rotation of the lever 26a, thereby restricting the protruding dimension of the safety rod 29. In the present embodiment, the maximum protruding dimension (in the door closing direction) from the front edge of the door 1 of the safety shoe 29 is 3 Onun ( A detection switch 31 for detecting the retreat of the safety chassis 29 is provided on the door 1 at the lower left of the rotary support 27 a and on the left of the lever 26 a. The detection switch 31 is provided at a position where it normally comes into contact with the lever 26a, and is in the 0N state.

When the safety switch 29 is retracted in the door opening direction due to an external factor such as being pushed by a user, the levers 26a and 26b move the rotation support portions 27a and 27b. Rotate counterclockwise around. Due to this rotation, the contact between the lever 26a and the detection switch 31 is released, and the detection switch 31 becomes OFF. At this time, the erepeater device is set to a state in which the door cannot be closed or door opening control (reversal control) is performed.

However, in addition to the above configuration, the elevator device of this embodiment extends the lever 26a downward, and at its lower end (the end on the door open side), the safety door 29a at the door open end. A roller 32 for retracting (pulling up) and a cam 33 are provided. A stop bracket 33 is provided at one end of the sill, and is provided independently of the door 1 so as not to move with the door 1. The stopper bracket 33 is provided with a detection switch 35. The detection switch 35 is in a normal OFF state.

As shown in FIG. 1, signals s 1 and s 2 indicating the respective states (ON or OFF) of the detection switches 31 and 35 are input to the micro computer 18 as shown in FIG. Has become.

Further, in the micro computer 18, based on the signals s 1, s 2 indicating the states of the detection switches 31, 35 and the open command 01 or the close command c 1 from the elevator control device 12. Logic unit 18 1 that outputs the open operation command 0 2 or the close operation command c 1 and the speed command based on the output of this logic unit 18 1 It has a speed controller 182 that generates and outputs a pulse P to the gate driver 11 according to the generated speed command. Although the details of the logic section 181 (Fig. 6) will be described later, when the detection switches 31 and 35 are both set to 0FF, the opening operation (or door closing prevention) command 02 is output. The logic is organized like this. In other words, if any one of the detection switches is in the 0N state, the door opening control or the door closing prevention control is not performed, and the door closing control becomes possible.

Normally, the lever 26a is in contact with the stopper 27a and the detection switch 31, and the detection switch 31 is in the 〇N state.

In addition, the roller 32 and the stop bracket 34 are separated. At this time, since the detection switch 35 is not in contact with the cam 33, the detection switch 35 is in the OFF state.

Since the detection switch 31 at this time is ON, the elevator device is in a state in which the door can be closed. Also, the positional relationship between the door 1 and the safety door 29 in the normal state is as shown in Fig. 7, and the safety door 29 is 30 mm from the front edge of the door 1. Next, the operation of the elevator device of the present embodiment when the door position is changed from the normal state to the fully opened state will be described with reference to FIGS. 3 to 5. . FIG. 3 is a partially enlarged view showing the elevator apparatus of this embodiment before the position of the door 1 is in a normal state and near the door fully open position.

FIG. 4 is a partially enlarged view showing the elevator apparatus of the present embodiment in which the position of the door 1 is fully opened.

FIG. 5 is a partially enlarged view showing the elevator apparatus of the present embodiment in a state where the position of the door 1 is fully opened and the safety 29 is further retracted due to an external factor. When the door 1 opens from the state shown in FIG. 2 and immediately before the door is almost fully opened, the state shown in FIG. 3 is obtained.

At this time, the state of the switches 31 and 35 is the same as the state shown in Fig. 2, with the detection switch 31 on and the detection switch 35 off. 32 is in contact with the stopper bracket 35, and the force 33 and the switch 35 are also in contact. When the door is fully opened from this state, the elevator apparatus of the present embodiment is in the state shown in FIG. The operation of this embodiment during this time will be described.

When the elevator door is near the fully open position (door open end), the roller 19 comes into contact with the stopper bracket 21 and the detection switch 35 comes into contact with the cam 33 to reach 0N.

When the door is further opened, the lever 26a rotates counterclockwise with the operation of opening the door. Due to this rotation, the safety shower 29 is retracted, and as shown in FIG. 8, the safety shower 29 is retracted by 5 mm as usual (the projection from the door 1 is 25 mm). At this time, the detection switch 31 is turned off. However, since the detection switch 35 is in the 〇N state, the door cannot be opened or closed due to the retreat of the safety show. In other words, the function of the safety show is disabled and the door can be closed.

When the door is fully opened, the state shown in Fig. 4 is obtained.

Also at this time, the lever 26a is separated from the stopper 30a and the detection switch 31 and the detection switch 31 is in the 0FF state.

The roller 32 and the stopper bracket 34 are in contact with each other, and the detection switch 35 is in contact with the cam 33 and is in the ON state. In other words, in the vicinity of the fully opened position of the door, the safety switch 29 is desired to be retracted, and the ON operation of the detection switch 35 prevents the door from being closed (or the door opened) due to the OFF operation of the switch 31. ) The barrel safety function is disabled.

From the state in which the door is fully opened as shown in FIG. 4, when the safety shoe 129 is further pushed by an external factor such as a hand, the elevator device of this embodiment is in the state shown in FIG.

The operation of this embodiment during this time will be described.

When the safety door 29 is further retracted at the door fully open position and the safety door 29 is further retracted by 5 mm as shown in Fig. 9 (the protrusion from the door 1 is 0 mm), the lever is released. Further counterclockwise rotation of 1 2a separates the mouth-latter 32 and the stopper bracket 34, leaving the detection switch 35 and the cam 33 open from each other. , The detection switch 35 is turned off.

At this time, the detection switches 31 and 35 are both in the OFF state. That is, when the detection switch 35 is set to the 0FF state, the function of the safety shoe for preventing or closing the door is restored.

Next, the logical part 18 1 of the micro computer 18 will be described with reference to FIG.

FIG. 6 is a flow chart showing the processing contents of the logic unit 18 1.

Hereinafter, this flow diagram will be described.

(A) Step 60 1 a:

It is determined whether or not the open command 0 1 has been output from the elevator control device 12 <If it is determined that the open command o 1 is present, an open command 02 is output to the speed control unit 182. (Bl) Step 6 0 1 b:

It is determined whether or not the closing command c 1 has been output from the elevator controller 12. If it is determined that the close command c1 is present, the process proceeds to step 602b.

(B2) Step 602b:

Judgment is made as to whether the position of the safety shower 29 from the front edge of door 1 is normal. If the detection switch 31 is 0 N, it is determined that the detection is normal, and if it is 0 F F, it is determined that the detection is not normal. If it is determined that the door is normal, the door is regarded as having no obstacle, and the closing operation command c 2 is output to the pulse generator 18 2. If it is determined that it is not normal, go to step 63b.

(B3) Step 603b:

Judge whether door 1 is near the fully open position. If the detection switch 35 is 0 N, it is determined that the position is near the fully open position, and if 0 F F, it is determined that the position is not near the fully open position (normal position). If it is determined that the obstacle is not near the fully open position, the opening operation command (door closing prevention command) o 2 is output to the speed control unit 18 2 assuming that the obstacle is near the door. If it is determined that it is near the fully open position, the flow shifts to step 604b.

(B 4) Step 6 04 b:

The safety show 29 determines whether or not it is the retreat accompanying the opening operation of the door 1 (whether or not it is the automatic safety show retreat). If the detection switch 35 is 0 N and the detection switch 31 is 0FF continuously, it is determined that the automatic safety switch 29 is retracted near the open end. If it is determined that the automatic safety switch 29 is retracted, it is determined that the retraction of the safety switch 29 is not caused by an obstacle, and the closing operation command c2 is output to the speed control unit 182. . If it is determined that the automatic safety switch is not retreating, the process proceeds to step 605b. (B 5) Step 6 0 5 B:

The safety show 29 determines whether or not the door has been retracted by an external factor at the fully opened position (the open end forced pushing position). When switch 35 is 0 F F. When switch 31 is OFF, it is determined that the open end is forcibly pushed. If it is determined that the opening position is the push-in position, it is determined that there is an obstacle at the door opening position, and the opening operation command o 2 is output to the speed control unit 18 2. If it is determined that the door is not at the open end forced pushing position, it is determined that there is no obstacle at the door open end, and the closing operation command c 2 is output to the speed control unit 18 2.

As described above, according to this embodiment, according to the conventional mechanism, the lever 26a extending downward, the roller 32 provided at the lower end of the lever 26a, and the door fully open position are provided. A simple mechanism, such as providing a stopper bracket 34 in contact with the rollers 32, allows the safety show 29 to retract (pull up) at the door open end.

Also, a cam 33 at the lower end of the lever 26a and a detection switch 35 for detecting a position in contact with the cam 33 near the fully opened position of the door are provided to detect the vicinity of the fully opened position of the door. The function of the safety show to prevent the door from closing or to open the door in response to the operation of the switch 35 is disabled. That is, separately from the normal detection switch 31, a detection switch 35 for detecting retreat near the fully opened door of the safety switch is provided, and these two detection switches are both turned off. A simple configuration in which the logic to invalidate the above safety show function is incorporated into the microcomputer 18 when it is possible to close the safety door near the fully open position with the door closed. Retreat is possible.

At this point, if the safety system is retracted near the fully open position, simply disabling the safety function described above will cause the user to open the door at the end of the door. The door starts to close once, such as when the safety door is closed by hand to prevent the door from closing, and then the detection switch (detection switch 31 in this embodiment) is effective. As a result, the door is inverted. When this is repeated, knocking of the doors closing and opening occurs, which is unfavorable for safety and causes discomfort to passengers.

However, in this embodiment, when the door is fully opened, the detection switch 35 for disabling the safety switch function is used, and the reset switch 29 is further retracted due to an external factor. In response to this, the function of the safety shoe is restored, so that even if the safety shoe 29 is retracted from the normal position near the fully open position of the door, the above-described door knock is not affected. It does not occur, enhances safety, does not cause discomfort to the user, and according to the present embodiment, even in an elevator that does not retract the safety system near the fully open position, , The safety shower is retracted near the door fully open position (lever 26 a, roller 32, cam 33, stopper bracket 34), and the safety door is fully opened near the door. It is only necessary to add a configuration (detection switch 38, logic section 181) that disables the function of the vehicle, so that the elevator can be easily retracted in the vicinity of the fully open position and the elevator can be retracted. can do.

In this embodiment, the switch 35 that detects the retraction of the safety switch 29 near the fully opened position of the door is a switch for retreating the safety chassis 29 due to an external factor at the fully opened position of the door. However, a detection switch for detecting the retreat of the safety unit 29 due to an external factor at the fully opened position of the door may be separately provided.

In the above embodiment, the state of the two detection switches 31 and 35 is changed The information was input to a computer, and based on the state of these two detection switches 31 and 35, the function of the safety switch was disabled or restored.

However, as shown in Fig. 10 to Fig. 12, the detection switch 31 and the detection switch 35 are connected in parallel, and the closing command c1 output from the The microcomputer 18 may be configured to be input to the micro computer 18 via a parallel body of the detection switches so as to invalidate and restore the function of the safety system.

The operation of the detection switches 31 and 35 is the same as in the above embodiment, and if either one of the detection switches is ON, the closing command from the erepeater control device 12 is sent to the micro computer 18. When the detection switches 31 and 35 are both OFF, the close command from the erepeater controller 12 is not input to the microcomputer 18 and the close control cannot be performed. Becomes FIG. 10 shows the state of the detection switches 31 and 35 in the normal state, and FIG. 11 shows the state of the detection switches 31 and 35 near the fully opened door. Fig. 12 shows the state of the detection switches 31 and 35 when the safety switch -29 is further retracted due to an external factor when the door is fully opened. As described above, in the above-described embodiment, the safety device that prevents the door from being closed or the door is opened by retreating the safety one-shot is invalidated when the door is fully opened. In other words, the safety device shall prevent the door from being closed or opened by retreating the safety tee except in the area near the door fully open position. Therefore, in this embodiment, in order to prevent the door from being closed or to open the door by retreating the safety switch even near the fully opened position of the door, in accordance with the position displacement of the switch for detecting the retreat of the safety shoe near the fully opened position of the door. It may be complicated configuration and Sina rather that say to retract the safe tee Shiyu, _c the receding of safe tea one shoe one near the door fully open position is made possible with a simple configuration As a result, it becomes easy to adjust the safety show to retreat near the fully opened position of the door.

Further, in the present embodiment, the invalidation of the safety device is released when the safety system is retracted more than the retreat distance of the safety system linked to the opening operation of the door near the fully opened position of the door. It was configured to do so. In other words, in this embodiment, in the area other than the vicinity of the fully opened position of the door, a safety device that prevents the door from being closed or opened by retreating the safety shoe, and a safety device linked to the opening operation of the door near the fully opened position. The retraction distance is larger than the retreat distance of the shoe. A mechanism is provided to prevent or close the door when the safety shoe retreats.

Therefore, in the present embodiment, even when the door is fully opened, it is detected that the safety system has retreated further.Therefore, the knocking problem that occurs when the safety device is disabled near the fully opened door, that is, When the door is not opened by the user pressing the safety handle at the open end of the door to prevent the door from closing, it is possible to prevent knocking of the door from being closed or opened. It is possible to improve safety without causing discomfort to passengers.

Claims

The scope of the claims

1. A safety system that protrudes from the front edge of the door of the elevator and has the function of preventing or closing the door by retreating, means for retracting the safety vehicle near the fully open position of the door, A repelling device comprising means for invalidating the function of the safety tissue near a position.

2. A safety device that protrudes from the front edge of the elevator door, a safety device that prevents the door from closing or opening the door by retreating the safety shower, and a door opening operation near the fully opened position of the door. In an elevator apparatus provided with a mechanism for retreating the safety shoe,

An elevator device characterized in that the safety device is disabled near the fully open position of the door.

3. In the area excluding the vicinity of the door where the safety door is protruding from the front edge of the elevator door, the door near the fully open position, the safety door is moved in conjunction with the opening operation of the door, and the area where the door is not fully opened. An elevator apparatus comprising a safety device for preventing a door from being closed or opened by retreating a safety show.

4. A safety shoe that protrudes from the front edge of the door of the elepetator and has the function of blocking or closing the door by retreating, means for retracting the safety shoe near the fully open position of the door, and fully opening the door Means for disabling the function of the safety shower near the position; and when the safety shoe retreats more than the retreat distance of the safety shoe retreated by the retreat means, An elevator apparatus comprising means for restoring the function of the safety system.

5. The safety protruding from the front edge of the elevator door An elevator system comprising a safety device for preventing the door from closing or opening the door by retreating the safety door, and a mechanism for retreating the safety door in conjunction with the opening operation of the door near the fully opened position of the door,

The safety device is invalidated near the fully opened position of the door, and the safety device is retreated by the retreat mechanism. An elevator apparatus characterized in that the elevator apparatus is configured to cancel.

6. In the area excluding the safety door that protrudes from the front edge of the elevator door, the mechanism that retracts the safety door in conjunction with the opening operation of the door near the door fully open position, and the area other than near the door fully open position, A safety device for preventing or closing the door by retreating the safety shoe, and a mechanism for preventing or closing the door by retreating the safety shoe due to an external factor when the door is fully opened. An erepeater device characterized by an octopus.

7. A safety shoe protruding from the front edge of the door of the erepeta, a safety device for preventing the door from closing or opening the door by retreating the safety shower, and a safety device for opening and closing the door near the fully opened position of the door. In an elevator system with a mechanism to retract the safety shoe,

The safety device is invalidated by retreating the safety shoe near the fully opened position of the door, and the safety device is retracted by the retraction mechanism and is larger than a retreat distance of the safety shoe retreated. An elevator apparatus characterized in that when the shoe retreats, the invalidation of the safety device is released.

8. A safety system protruding from the front edge of the elevator door, a mechanism for retracting the safety shower in conjunction with the opening of the door near the door fully open position, and detecting the retraction of the safety shoe. First detector And a safety device for closing the door or opening the door in response to the operation of the first detector.

A second detector for detecting the vicinity of the fully opened position of the door, a third detector for detecting further retreat of the safety shoe from a position where the safety shoe retreats by the retreat mechanism, The safety device is configured to invalidate the safety device in response to the operation of the detector, and to cancel the invalidation of the safety device in response to the third detector. apparatus.

9. In Claim 8,

The first detector detects displacement caused by the retreat of the safety shoe, and the third detector detects displacement caused by further retreat of the safety shoe. Beta equipment.

10. A safety shoe protruding from the front edge of the elevator door, a mechanism for retracting the safety shoe in conjunction with the opening of the door near the door fully open position, and a safety shoe caused by an external factor. A first detector for detecting retreat of the safety door, and a second detector for detecting retreat of the safety shoe by the retreat mechanism. A door closing prevention or door is responsive to the first detector. Opening the door and not closing or closing the door in response to the second detector.

1 1. A safety shoe protruding from the front edge of the door of the elevator, a lever having an end rotatably connected to the safety shoe, and a lever connected to the door and rotatably supporting a central portion of the lever. A first detection switch for detecting that the safety shoe has retracted in the door opening direction, and a door closing prevention or door opening in response to the operation of the first detection switch. In an elevator device provided with a safety device to A stopper provided independently of the door and in contact with the other end of the lever near the fully open position of the door; and a stopper between the stopper and the other end of the lever in accordance with the opening operation of the door. An elevator, comprising: a second detection switch for detecting retreat of the safety system due to contact, and disabling the safety device in response to the operation of the second detection switch.