KR102099668B1 - Elevator safety apparatus - Google Patents

Abstract

The present invention relates to an elevator door safety locking apparatus for an elevator, in an elevator which includes a platform door dividing an elevator passage of a building and an indoor space and automatically opened and closed, and an elevator cage having an elevator door and an elevator body to move passengers to a corresponding floor while lifted through the elevator passage. The elevator door safety locking apparatus for an elevator comprises: a locking unit to lock and unlock the elevator door; a detection target part installed on each floor in the elevator passage; a position detection sensor installed on the elevator body to detect the detection target part when the elevator cage arrives at a corresponding floor in the elevator passage; a driving unit to open and close the elevator door; and a controller to control operations of the locking unit and the driving unit in accordance with a sensing value received from the position detection sensor. If the elevator door of the elevator cage is stopped to be vertically misaligned with the platform door of the corresponding floor, the locking unit is maintained in a locked state by the controller, and the driving unit is maintained in a stopped state by the controller to prevent accidents caused by abnormal running of the elevator.

Description

Elevator door safety lock for elevators {ELEVATOR SAFETY APPARATUS}

According to the present invention, when the elevator cage arrives and stops from the correct position with the door of the platform on the floor, it detects it and maintains the locked state of the elevator door of the elevator cage, thereby blocking the forced opening of the elevator door to force the occupant to open the door. This is a technology related to elevator door safety locks to prevent safety accidents that may occur when opening.

The elevator includes a cage door installed in a cage moving along the hoistway of the building and a platform door installed at an entrance communicating with the hoistway on each floor of the building, and both the cage door and the platform door are opened and closed for passengers to get on and off at each floor. shall. On the other hand, when the cage is stopped between the platform and the hoistway without stopping at the platform on each floor due to factors such as failure or power outage, when the passenger inside the cage opens the cage door inadvertently, the passenger enters the interior of the hoistway where the cage runs. There is a risk of falling, and when a person is in the cage, the elevator or door suddenly starts operating when the cage door is opened and the hand or foot is pushed out of the cage. Several problems can occur, such as crashing into the same area and causing serious injury.

As a technology to prepare for such a safety accident,

Republic of Korea Patent Registration No. 10-0953851 (Registration on April 13, 2010, hereinafter referred to as 'document 1'), "Safety Circuit for Elevator Doors" has been proposed,

Document 1 automatically queries the locking sensor repeatedly at short intervals through the data bus by the control unit to detect communication interruptions or transmission errors through the data bus during transmission, and of locking sensors and bus interfaces. In order to test the function, the safety circuit for the elevator door, which makes the control unit available through the data bus by repeatedly querying the status of the locking sensors at long intervals under the conditions of the closed elevator doors and the open elevator doors. It is about technology.

As another technique, Korean Patent Publication No. 10-2005-0091709 (published on September 15, 2005, hereinafter referred to as 'document 2'), "Optical Synchronous Safety Detection Device for Elevator Slide Doors" has been presented.

Document 2 describes a plurality of linearly placed emitters each configured to be activated to emit an energy beam, and a plurality configured to receive one of the energy beams from a corresponding one of the plurality of emitters, each corresponding to one of the plurality of emitters. Includes a linearly arranged receiver, each of the plurality of receivers being activated differently before receiving the energy beam in the scanning order, each of the plurality of emitters being activated differently to emit the energy beam in the scanning order, and the plurality of receivers Each activated one of them is deactivated upon receipt of an energy beam and the next one of the plurality of receivers is activated in a scanning sequence, thereby describing an optical synchronous safety detection system for a sliding elevator door and a method for operating such a system to be.

As another technology, Korean Patent Publication No. 10-2010-0093841 (published on August 26, 2010, hereinafter referred to as 'document 3'), "Auxiliary safety door opening and closing device for elevators" has been proposed.

Document 3 is provided between the elevator passage and the door of the elevator to be opened and closed, and a plurality of locking brackets are formed to be separated from each other on the front predetermined portion in the direction of the elevator passage, and to be formed on the rear predetermined portion of the elevator door. It is composed of a locking protrusion that opens and closes the auxiliary safety door together when it is opened and closed when it is opened and closed, so even if the door of the platform is opened due to external physical impact and electronic errors, the elevator car arrives on the floor and the elevator door is opened Prior to this, it is a technique for opening and closing the auxiliary safety door of an elevator, which is intended to prevent the safety accident of a passenger by preventing the auxiliary safety door from being opened.

As another technique, the Republic of Korea Patent Registration No. 10-1665338 (Registration on October 6, 2016, hereinafter referred to as 'document 4'), "Elevator door safety locking device" is presented,

Document 4 includes a base mounted on one first cage door among a pair of cage doors that open and close to the left and right of an elevator cage, a locking latch mounted on a second cage door on the other of a pair of cage doors, and a first The flow cam movably coupled to the cage door and connected to the base by a link base hinge and connected to the pivoting locking piece by a locking connection hinge part are coupled to the locking latch or coupled at the locking latch according to the movement of the flow cam By including the pivoting locking piece to be released, the main part of the floating cam descends by its own weight to rotate the cage locking latch again, and when the cage locking latch rotates upward again, the cage locking hook hooks into the hook hole of the cage locking latch Since the first cage door and the second cage door are closed again, it is significantly easier than before. It is a technology related to elevator door safety locking device implemented with fire extinguishing configuration.

Literature 1. Korea Patent Registration No. 10-0953851 (2010.04.13. Registration) Document 2. Republic of Korea Patent Publication No. 10-2005-0091709 (2005.09.15. Published) Document 3. Republic of Korea Patent Publication No. 10-2010-0093841 (published on August 26, 2010) Document 4. Republic of Korea Patent Registration No. 10-1665338 (Registration on October 6, 2016)

In the present invention, locking and releasing of the locking unit of the elevator door is controlled by a controller according to the sensing value of the detection sensor, and when the elevator cage does not stop arriving at the correct position on the floor, it locks the locking unit and externalizes it with an LED or the like. An object of the present invention is to provide an elevator door safety lock device for display.

In order to solve the above problems, the elevator door safety lock device of the elevator according to the present invention,

In an elevator consisting of a lift door that automatically opens and closes the elevator passage of a building and an interior, and an elevator cage having an elevator body and an elevator door for moving passengers to the corresponding floor while ascending through the elevator passage,

A locking unit for locking and releasing the elevator door;

A detection target unit installed on each floor in the elevator passage;

A position sensor installed on the elevator body to detect the detection target when the elevator cage arrives at a corresponding floor in the elevator passage;

A driving unit responsible for opening and closing the elevator door; And

A controller that controls each operation of the locking unit and the driving unit according to the sensing value received from the position sensor;

Consists of,

When the elevator door of the elevator cage is vertically shifted from the platform door of the corresponding floor, the locking unit is maintained by the controller, and at the same time, the driving unit is maintained by the controller. do.

Elevator door safety lock of the elevator according to the present invention,

Not only prevents occupants who want to board from the floor from entering the open platform door when the elevator arrives, but cannot forcibly open the closed elevator door, as well as preventing the safety accident of the occupant by keeping the platform door locked. It has the biggest effect to make it possible.

1 is a side cross-sectional configuration diagram for showing an elevator with an elevator door safety lock according to the present invention,
Figure 2 is a schematic cross-sectional configuration of Figure 1,
Figure 3 is a partial cross-sectional configuration diagram for showing the control structure by the controller in the elevator door safety lock device of the elevator according to the present invention,
4 and 5 is a cross-sectional configuration of the operation for showing the locking unit.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Prior to this, the terms or words used in the present specification and claims should not be construed as being limited to ordinary or lexical meanings, and the inventor appropriately explains the concept of terms to explain his or her invention in the best way. Based on the principle that it can be defined, it should be interpreted as meanings and concepts consistent with the technical spirit of the present invention. Therefore, the embodiments shown in the embodiments and the drawings described in this specification are only the most preferred embodiments of the present invention and do not represent all of the technical spirit of the present invention, and various equivalents can be substituted at the time of this application. It should be understood that there may be water and variations.

First, the elevator referred to in the present invention is a platform door (1) that automatically opens and closes the elevator passage and the interior of the building, and the elevator body (2a) for moving the occupant to the corresponding floor while moving through the elevator passage and It consists of an elevator cage 2 having an elevator door 2b. At this time, the elevator cage 2 is moved up and down by a cage driving unit 3 installed in the space above the elevator passage.

1 to 5, the elevator door safety lock device of an elevator according to the present invention,

It is largely composed of a locking unit 10, a detection target unit 20, a position detection sensor 30, a driving unit 40 and a controller 50.

Looking at each configuration,

The locking unit (10)

4 and 5,

For the locking and release of the elevator door (2b), a more detailed description will be described later.

The detection target unit 20

1 to 3,

It is installed on each floor in the elevator passage,

The position sensor 30 is installed in an appropriate place that can be detected, in particular, when the elevator cage 2 is stopped on the floor accurately, the position sensor 30 is the detection target unit ( 20) is preferably installed in a position that can be detected through. As a result, a plurality of the detection target units 20 are provided and installed at upper and lower locations for each floor in the elevator passage.

In the present invention, two or more of the detection targets 20 are installed on the upper inside of the doorway frame that enters and exits when the platform door 1 is opened or closed, that is, on the side of the elevator passageway, and also inside or below the doorway frame. Two or more of the detection target units 20 are installed on the floor between the floors, which is an example, and the quantity and installation within a range that satisfies a condition that can detect whether the elevator cage 20 has arrived at the floor and stopped. The location can be varied.

The position sensor 30

1 to 3,

To be installed on the elevator body (2a) to detect the detection target portion 20 when the elevator cage (2) arrives at the floor in the elevator passage,

As a sensor that measures the amount with a dimension of length and turns it on and off at a certain position, it can be one of a step switch type, perturbation resistance type, electrostatic strategy type, differential transformer type, proximity switch, and photoelectric switch.

In addition, it is preferable that a plurality of the position detection sensors 30 are provided and installed in the elevator body 2a to correspond to the respective detection targets 20.

The driving unit 40

As shown in Figure 3,

In charge of opening and closing the elevator door (2b),

The driven sprocket 41 is rotated by being coupled to the upper end of the elevator door (2b),

The drive sprocket 42 is installed inside the doorway side frame into and out of the elevator door (2b),

A drive chain (43) interconnecting the driven sprocket (41) and the drive sprocket (42),

A relay member 44 for interconnecting the upper end of the elevator door 2b and the drive chain 43, and

Sprocket drive motor 45 for transmitting rotational power to the drive sprocket 42

It is made including.

When the drive sprocket 42 is rotated by the sprocket driving motor 45, the relay member 44 moves together with the drive chain 43, and the elevator door 2b to which the relay member 44 is connected By moving together, the opening and closing operation of the elevator door 2b is made. The drive unit 40 for such an operation is an example, and may be variously modified and changed within a range that satisfies the conditions for opening and closing the elevator door 2b.

The sprocket driving motor 45 is electrically connected to the controller 50 to be controlled by the controller 50.

The controller 50

As shown in Figure 3,

It consists of a circuit structure for controlling each operation of the locking unit 10 and the driving unit 40 according to the sensing value received from the position sensor 30.

The controller 50 is electrically connected to each of the locking unit 10 and the driving unit 40, thereby controlling them.

In particular, in the present invention, when the elevator door 2b of the elevator cage 2 is stopped by being vertically displaced from the platform door 1 of the corresponding floor, the locking unit 10 is maintained in a locked state by the controller 50 At the same time, the driving unit 40 is maintained in a stopped state by the controller 50, thereby forcibly opening the elevator door 2b.

On the other hand, the elevator door safety lock device of the elevator according to the present invention further comprises a notification display unit 60,

The notification display unit 60

2 and 3,

It is installed in the doorway frame where the platform door (1) is installed to be controlled by the controller 50,

When the locking unit 10 is locked, it is displayed in red, and when the locking unit 10 is unlocked, it consists of LEDs (LEDs) capable of switching two or more colors, which are displayed in blue. It may be implemented so that it is provided individually with two or more.

Eventually, the passenger who was waiting for boarding can recognize that the elevator cage 2 has arrived at the wrong level because it is not located on the floor when the notification display unit 60 is red, through which the building manager or the elevator It is possible to notify the outside of the manager, etc., even if the platform door 1 is open, the elevator door 2b will not be forcibly opened, and even if it is forcibly opened, the elevator door 2b by the locking unit 10 ) Is locked, which limits the forced opening.

In addition, the present invention may further include an entry detection sensor 70 that senses that the elevator cage 2 is entering the platform door 1 side of the corresponding floor and delivers it to the controller 50. Eventually, the controller 50 is transmitted through the entrance detection sensor 70 to indicate that the elevator cage 2 has arrived at the corresponding side, and the elevator cage 2 is accurately stopped on the floor of the controller 50. The cage driving unit 3 is controlled so as to be able to do so.

Meanwhile, the locking unit 10 is

3 to 5,

The hook (11) installed inside the doorway frame where the platform door (1) is installed,

A locking groove (12) formed in a position corresponding to the hook (11) in the closed door (1),

Hook drive unit 13 for rotating the hook 11 to the left and right to insert into the locking groove 12

It is made including.

At this time, the hook driving unit 13 is electrically connected to the controller 50, so that the hook driving unit 13 is controlled by the controller 50.

As a result, when the hook driving unit 13 is operated by the controller 50, the hook 11 is rotated to enter the locking groove 12 or to be reversed to exit, thereby closing the platform door 1 It is possible to lock and unlock it.

Therefore, the controller 50 is external through the notification display unit 60 when the elevator cage (2) arrives up and down from the platform door (1) on the floor according to the sensing value received from the position sensor (30). Notify with and maintain the locked state of the hook driving part (13).

And the locking unit 10 is

Rail 14 having a vertical length inside the doorway frame,

A locking bracket 15 coupled to the rail 14 and having a guide hole 151 that slides up and down along the rail 14 and is opened to one side at the middle,

Bracket driving unit 16 for lifting the locking bracket 15 up and down

It may further include, when the locking bracket 15 is lowered by the bracket driving portion 16 made of a cylinder structure of a pneumatic or hydraulic cylinder having a piston that moves forward and backward by a selective supply of air. It is possible to enter the hook 11, which is rotated to the guide hole 151 of the bracket 15, and when the locking bracket 15 rises, the hook 11 is caught at the bottom of the locking bracket 15 and rotated. Operation is limited.

Eventually, the bracket driving unit 16 is electrically connected to the controller 50, and the controller 50 receives and transmits it through the position sensor 30 when the elevator cage 2 arrives out of position. By stopping the operation of the hook driving unit 13 and simultaneously driving the bracket driving unit 16 to limit the rotational operation of the hook 11 by the locking bracket 15, failure of the hook driving unit 13 or Even if a malfunction occurs, the opening of the elevator door 2b can be blocked through the locking bracket 15, so that a double locking structure can be implemented.

In the above description of the present invention with reference to the accompanying drawings, the "elevator elevator door safety lock device" having a specific shape and structure is mainly described, but the present invention can be variously modified and changed by those skilled in the art. Modifications should be construed as falling within the protection scope of the present invention.

1: Platform door
2: Elevator cage
2a: lift body
2b: elevator door
3: cage drive
10: Locking unit
11: hook
12: Hanging groove
13: Hook driving part
14: rail
15: locking bracket
151: Guide hole
16: Bracket driving part
20: detection target
30: position sensor
40: drive unit
41: driven sprocket
42: drive sprocket
43: drive chain
44: relay member
45: Sprocket drive motor
50: controller
60: notification display
70: entry detection sensor

Claims (7)

Elevator cage (1) that automatically opens and closes the elevator passage of the building and the interior, and an elevator cage (2a) and an elevator door (2b) for moving passengers to the corresponding floor while moving through the elevator passage ( In an elevator consisting of 2),
A locking unit 10 for locking and releasing the elevator door 2b;
A sensing target unit 20 installed on each floor in the elevator passage;
A position sensor 30 installed on the elevator body 2a to sense the detection target 20 when the elevator cage 2 arrives at a corresponding floor in the elevator passage;
A driving unit 40 responsible for opening and closing the elevator door 2b; And
A controller 50 that controls each operation of the locking unit 10 and the driving unit 40 according to the sensing value received from the position sensor 30;
Consists of,
When the elevator door (2b) of the elevator cage (2) is stopped shifted up and down with the platform door (1) of the floor, the locking unit (10) is locked by the controller (50), and at the same time the The driving unit 40 is maintained in a stopped state by the controller 50,
The detection target unit 20 is provided with a plurality of is installed in the upper and lower locations (각 所) for each floor in the elevator passage,
A plurality of the position detection sensors 30 are provided and installed on the elevator body 2a to correspond to the respective detection targets 20,
Further comprising a notification display unit 60 is installed in the doorway frame is installed in the platform door 1 is controlled by the controller 50,
The locking unit 10 includes a hook 11 installed inside the doorway frame where the platform door 1 is installed, and a locking groove formed at a position corresponding to the hook 11 in the closed platform door 1 ( 12), the elevator door safety lock device, characterized in that consisting of a hook driving portion 13 for rotating the hook 11 to the left and right to be inserted into the locking groove (12).
delete delete According to claim 1,
The notification display unit 60 is composed of an LED (LED) capable of switching two or more colors displayed in red when the locking unit 10 is locked and displayed in blue when the locking unit 10 is unlocked. Elevator door safety lock device of the elevator, characterized in that.
The method according to claim 1 or 4,
Elevator door of the elevator, characterized in that it further comprises an entry detection sensor (70) for detecting that the elevator cage (2) enters the platform door (1) side of the floor, and transmitting it to the controller (50). Safety lock.
delete The method according to claim 1 or 4,
The locking unit 10 is
Rail 14 having a vertical length inside the doorway frame,
A locking bracket 15 coupled to the rail 14 and having a guide hole 151 that slides up and down along the rail 14 and is opened to one side at the middle,
Bracket driving unit 16 for lifting the locking bracket 15 up and down
Further comprising, when the locking bracket 15 is lowered by the bracket driving part 16, the hook 11 is rotated to the guide hole 151 of the locking bracket 15, and the locking bracket is allowed to enter. (15) Elevator door safety lock device of an elevator, characterized in that the hook 11 is caught at the lower end of the locking bracket 15 so that the rotational motion is limited.

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