KR101843325B1 - Lift door safety switchgear - Google Patents

Abstract

The present invention relates to a safety opening and closing apparatus for elevator doors and, more specifically, relates to the safety opening and closing apparatus capable of minimizing unnecessary malfunctioning factors by simplifying a series of opening and closing structures and improving the reliability of operation, and also, preventing an operational error, caused by an external physical impact or electric error, thereby protecting a user from a dangerous circumstance such as a falling accident. Thus, to achieve the purpose, the safety opening and closing apparatus comprises an operating part installation frame and elevator doors. The operating part installation frame includes an opening and closing control operation device, a door connection panel, a sub-locking device, and an operation control box. The elevator doors are formed by attaching a jam signal sensing member to a closing contact surface between the elevator doors.

Description

Lift door safety switchgear

The present invention relates to a door opening and closing apparatus for an elevator, and more particularly, to an elevator door opening / closing apparatus for an elevator, which is capable of minimizing the cause of unnecessary trouble by improving the simplified operation opening / closing structure and the operation reliability thereof, The present invention relates to an elevator door safety opening / closing device that can safely protect a user from an operational error that may be caused by, for example, the risk of a safety accident due to an abnormal door opening.

Generally, it is understood that a multi-story building, a facility, or the like is provided with an elevation conveying means for convenient and rapid interlayer movement, for example, an elevator for moving a person or a cargo in a vertical direction by using power.

The basic structure of the elevator is briefly described as follows. That is, a car which is provided with a destination button operating section, a lighting, an interphone, and the like on a side surface of a booth with a predetermined area on which the user is boarding, A machine room for controlling the lifting and lowering operation of the car by the facility and an elevator door for guiding the user in and out of the car by the opening and closing operation of opening and closing.

Here, in particular, the elevator door is divided into a car door and a platform door.

The landing door is opened by the power of the car by engaging the car door, and the door switch is installed inside the invisible upper part to exchange the operation circuit when opening and closing.

In addition, when the elevator car is moved to another floor by annular locking so as not to be mechanically opened, it can not be opened by a physical external force. Such a configuration of functions is generally referred to as a door interlock switch, which is composed of a door switch for preventing the elevator from being driven in a state in which the landing door is opened and a door lock for locking the elevator door from outside when the emergency key is not used And these devices are generally installed integrally without being installed separately.

That is, the elevator door is structured such that the door lock is firstly locked, then the door lock switch is inserted, and the door lock switch is turned off.

On the other hand, the elevator door having a series of structural characteristics as described above is divided into a vertical type door that is opened and closed in the vertical direction and a slide type door that is opened and closed in the horizontal direction. The elevator door is normally installed in the cargo elevator, It is general that a sliding door is provided in the elevator for use.

In particular, the slide-type door is a type in which one or more door bodies are supported in a hanging state, for example, a state in which the upper portion is attached to the door hanger in a suspended state and is movable along the conveying rail. The lift door is reciprocated in the opening or closing direction by the acting feeding force

However, as described above, the conventional elevator door opening / closing apparatus has a structure in which a driving force for moving a door hanger is transmitted through a rope, for example, a structure in which a rope connected to a door hanger is installed so as to be movable along a predetermined path through a plurality of guide pulleys And one side of the rope is wound on a driving pulley rotated by a motor so that the rope moves forward or backward according to the rotation direction of the motor to open and close the door hanger;

Therefore, the conventional elevator door opening / closing apparatus transmits the driving force of the motor through the rope. Inevitably, the rope and the pulley must be disposed around the door, so that the structure becomes complicated and there is a high possibility of occurrence of trouble during operation , Installation and maintenance costs are excessive.

Particularly, there is a problem that frequent use relation and temperature change due to time elapses cause the rope to change its tension, resulting in lower operating accuracy, resulting in unnecessary operation interference in the driving part, and frequent failure with waste of unnecessary energy.

Accordingly, in order to solve the problems of the conventional elevator door, there has been a demand for development of a door opening / closing structure using various power transmission means instead of a rope. However, due to a narrow space around the elevator door, And there are many problems in applying other conventional power transmission mechanisms to the elevator opening and closing structure.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the conventional problems of the conventional elevator door opening / closing apparatus,

It is an object of the present invention to simplify a series of operation opening and closing structures for an elevator door and to improve operation reliability so as to minimize the cause of occurrence of an unnecessary fault and also to cause an accident caused by an external physical shock, The present invention provides an elevator door safety opening and closing apparatus for safely protecting a user from the risk of an accident such as a falling accident due to abnormal opening of the door.

It is also an object of the present invention to provide a user-owned article having a relatively small volume, thickness, diameter, area and the like in a door of a close operation, such as a lead of a companion animal, a strap of a handbag, When a part or the like is stuck, it is easily sensed by a physical and electrical change signal, and the operation of the elevator is shut off, and at the same time, the closed elevator door is automatically opened, thereby improving safety, convenience, and reliability of use And a door opening / closing device for the elevator door.

In order to accomplish the above object, according to a first aspect of the present invention, there is provided an apparatus for safely opening and closing an elevator door,

An elevator door opening / closing apparatus comprising a driving section installation frame and an elevator door,

And a pair of drive rack gears coupled to upper and lower surfaces of the drive pinion gears, wherein the pair of drive rack gears further include a power linkage at each outer end thereof;

A door connecting panel having a switch contact piece formed on a front surface of a lower end of each of the power connecting rods;

A pair of auxiliary locking devices for locking and unlocking the elevator door in contact with the switch contact pieces of the door connection panel;

A driving intermittence control box is provided at a lower central portion of the opening / closing control operation unit to shut off the elevating / lowering operation of the elevator due to a foreign material interposition signal when the elevator door is closed;

Again, the pair of elevator doors form a pair of rod-engaging holes into which the locking rod of the auxiliary locking device is inserted, and further include a pair of lifting / lowering door openings .

As described above, the elevator door safety opening / closing apparatus according to the present invention simplifies a series of operation opening / closing structures for an elevator door and improves operational reliability, minimizes the cause of unnecessary trouble, Thereby preventing an operation error that may be caused by an abnormal door opening. This provides an effect of safely protecting a user from a risk such as a falling accident due to an abnormal door opening.

Further, in the elevator door safety opening and closing apparatus according to the present invention, when a lead of a companion animal, a strap of a handbag, or a part of a skirt worn by a user is stuck to a door of a lift door that is operated to be closed, Signal is easily sensed and the operation of the elevator is interrupted and the elevator door to be closed is automatically reopened. Thus, safety, convenience, and reliability of use are greatly improved, thereby providing a very useful anticipated effect .

1 is a partially exploded perspective view of an elevator door safety opening and closing apparatus according to the present invention.
Fig. 2 is a magnified operating state diagram of the opening and closing control operating device applied to the present invention
Fig. 3 is a magnified operating state diagram of the auxiliary locking device applied to the present invention
Fig. 4 is a view showing a drive intermittence control box and an enlarged operation state diagram
Fig. 5 is an enlarged view of the main part of the interference signal detecting member applied to the present invention

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of an elevator door safety opening and closing apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

Referring to the accompanying drawings, a schematic configuration of an elevator door safety opening and closing apparatus according to the present invention will be described.

This is achieved by providing a driving part mounting frame 100 provided with an opening / closing control operating device 1, a door connecting panel 2, a subsidiary locking device 3, a drive interrupting control box and a catching signal detecting member 5 And an elevator door 200 attached and formed.

1 or 2, the opening and closing control operation device 1 provided as the driving part mounting frame 100 is provided with an electric motor (not shown) at the center of the inner wall surface of the driving part mounting frame 100 And a pair of drive rack gears 12 are mounted on the upper and lower surfaces of the drive pinion gear 11 with the drive pinion gear 11 as a center, (12 ') of the pair of drive rack gears (12) and (12'). The power racks 12 'and 12' are connected to each other by a horizontally opposed structure, 121) 121 'are integrally connected.

At this time, in a pair of driving rack gears 12 and 12 'horizontally engaged with the upper and lower surfaces of the driving pinion gear 11 described above, the driving rack gears 12 and 12' 1, the central portion of the power link 121 of the lower rack 12 is prevented from interfering with the operation progressing direction of the lower rack 12 'when the lower rack is rotated. As shown in FIG. 1, Quot; -shaped working interference avoiding groove H is further formed.

The door connecting panel 2 provided with the driving part mounting frame 100 is connected to the opening and closing control operating device 1 and a pair of elevator doors 200 to be described later, 1 or 2, the door connecting panel 2 has a rectangular plate-like structure and has a plate-shaped switch contact piece 21 bent in a right angle structure at its inner end, (Not shown in the drawing, reference numeral 22 denotes a door fastening hole)

At this time, the door connection panel 2 is connected to the left and right elevator doors 200 by a pair of left and right driving rack gears 12 and 12 ' And the plurality of door connecting panels 2 are integrated into a single name and a single code for convenience of explanation and are described as a single configuration.

The auxiliary locking device 3 provided as the driving part mounting frame 100 is provided with means for locking and unlocking the pair of elevator doors 200 slidably closed so as not to be artificially opened by an external force, 1 and 3, the limit switch 31 is exposed and formed on the outer surface of the auxiliary lock device, and a sliding structure (not shown) is formed in the inner center portion by the switching operation of the limit switch 3, And a locking rod 32 which is horizontally protruded and inserted and controlled to be inserted thereinto.

At this time, the above-described auxiliary locking device 3 is installed in a pair of symmetrical structures on the inner lower front front center left and right sides of the driving part mounting frame 100, and the pair of auxiliary locking devices 3 For convenience, specify a single name and a single sign to describe it in one configuration.

The driving interrupting control box 4 provided in the driving part mounting frame 100 is a means for automatically shutting off the elevating and lowering operation of the elevator by a foreign object engaging signal when the elevating door 200 is closed. As shown in Fig. 4, the drive intermittence control box 4 includes a pair of left and right winding bobbins 41, which are elastically rotated in the normal direction by a spiral spring 411 and an elastic rotation shaft 412, A door signal cable 42 wound around the pair of winding bobbins 41 and symmetrically extended in the direction of both left and right sides of the drive interrupter control box 4 is connected to the door signal cable 42, It is preferable that the circuit control board 43 which receives the signal of the foreign object of the elevator door transmitted through the elevator door 42 and blocks the elevating and lowering operation of the elevator is received.

Meanwhile, when the elevator door 200 is applied to the present invention, the elevator door 200 has a pair of left and right symmetrically divided parts and is configured to intermittently ride the elevator by a sliding opening / closing action. As shown in Fig. 3, a pair of the rod-locking holes P are formed on the outer side of the upper portion of the pair of elevator doors 200 so that the locking rod 32 of the above-described auxiliary locking device 3 is hooked by the insertion structure The accommodation signal detecting member 5 is further attached to the left and right close contact surfaces of the pair of elevator doors 200 which are opened and closed by sliding, as shown in FIG. 1, 5, a pressure sensor cable 51 and a close proximity sensor cable 52 are installed on the inner side and a sensor cable exposure induction pipe 53 is extended in a horizontal protruding structure on the outer side of the upper end Is preferable.

At this time, in the above-described elevator door 200, the pair of rod fastening holes P have a long hole structure having a predetermined length and depth, and have a switching contact releasing clearance L .

Accordingly, as described above, the elevator door safety opening / closing apparatus according to the present invention having a series of configurations as described above will be described below.

This is because the opening and closing control operating device 1 is provided at the center of the inner side wall of the driving part mounting frame 100 as shown in Fig. 1, and a pair of driving rack gears The door connecting panel 2 is integrally formed on the front side of the lower end of each of the power connecting rods 121 and 121 '

Subsequently, as shown in Fig. 3, on the inner lower front front center left and right sides of the driving part mounting frame 100, the door contact surface of the elevator door (not shown) is connected by the switching contact signal with the switch contact piece 21 of the door connecting panel 2 A pair of auxiliary locking devices 3 for locking and unlocking the opening / closing control operation device 1 and a driving intermittence control box 4 are installed at the center of the lower part of the opening / closing control operation device 1. [

1, the left and right closing contact surfaces of the pair of elevator doors 200 are attached to the left and right close contact surfaces of the pair of elevator doors 200 in the left and right directions of the drive interlock control box 4 The symmetrically drawn out door signal cable 42 is connected to the pressure sensor cable 51 and the close proximity sensor cable 52 which are drawn out through the sensor cable exposure guide pipe 53 of the interference signal detecting member 5, In this manner, the elevator door 200 is connected to the door connection panel 2, thereby realizing the elevator door safety opening and closing apparatus according to the present invention.

At this time, the door signal cable 42 connected with the pressure detection sensor cable 51 and the close proximity sensor cable 52 is prevented from twisting or tangling and is provided with means 2 and 4, the pair of cable guide rollers R are driven by a pair of cable guide rollers R, for example, And are symmetrically formed on the left and right sides of the inner lower wall of the driving part mounting frame 100,

Hereinafter, the operation of the elevator door safety opening / closing device according to the present invention, which is formed by the coupled installation structure, and the interaction therebetween will be described.

First, when the drive pinion gear 11 is rotated in forward and reverse directions by an electric motor (not shown) in the opening and closing control operating device 1, a pair of gears 11, The driving rack gears 12 and 12 'of the driving rack gears 12' move in the left and right directions as shown in FIG. 2, and the pair of elevator doors 200 are slid and moved .

3, when the pair of elevator doors 200 are closed, the switch contact pieces 21 formed by the door connecting panel 2 are engaged with the limit switches (not shown) of the pair of auxiliary lock devices 3, The locking rod 32 of the pair of auxiliary locking devices 3 takes on a long hole structure by the switching signal to be contacted by the pair of load lock holes 21 having the switching contact releasing clearance L, P so that the pair of elevator doors 200 are locked.

Conversely, in the process of opening the elevator door 200, the switch contact piece 21 is brought into contact with the limit switch 31 as shown in Fig. 3 by the clearance distance by the switching contact release clearance L, When the state is released, the locking signal is released by the switching signal so that the locking rod 32 is inserted into the auxiliary locking device 3 and the locking state of the elevator door 200 is released, thereby providing a stable open operating relationship.

As described above, when the pair of elevator doors 200 are opened and closed, foreign matter that may not be expected to be formed on the closing contact surface of the elevator door 200 to be closed, such as a strap of a handbag held by the user, When a lead wire of a companion animal or a part of a skirt worn by a user is stuck, a pressure sensing cable 51 embedded in the interference signal sensing member 5 and a contact detection sensor cable 52 And detects the uneven contact state of the closing contact surface of the elevator door 200 according to the pressure change of the closing contact surface of the elevator door 200 according to the state of the elevator door 200 and the contact unevenness state of the closing contact surface of the elevator door 200, To the circuit control board 43 of the elevator control unit 4 so that the elevator raising and lowering drive is automatically cut off and controlled to perform a series of operational functions.

1: opening / closing control operating device 2: door connecting panel
3: auxiliary lock device 4: drive interlock control box
5: an interference signal detecting member 11: a driving pinion gear
12, 12 ': drive rack gear 21: switch contact piece
31: Limit switch 32: Locking rod
41: winding bobbin 42: door signal cable
43: Circuit control board 51: Pressure sensor cable
52: Contact sensor cable 53: Sensor cable exposure guide tube
100: driving part mounting frame 200: elevator door

Claims (3)

An elevator door opening / closing apparatus for a vehicle, comprising: a pair of elevator doors (200) connected to a front lower surface of a driving part mounting frame (100) by a left and right sliding action;
The driving part mounting frame 100 has a pair of driving rack gears 12 and 12 'on the upper and lower surfaces of the driving pinion gear 11 at the center of the inner wall surface with a driving pinion gear 11 as a center, A pair of drive rack gears 12 and 12 'of the opening and closing control operating device 1 are formed to have a right angle bending structure at each outer end thereof, Further comprising a power connecting rod 121 (121 '
The door connecting panel 2 having the switch contact pieces 21 provided on the front side of the lower ends of the power connecting rods 121 and 121 'formed by the outer ends of the pair of the driving rack gears 12 and 12'Bond;
A pair of auxiliary locking devices (not shown) for locking and unlocking the elevator door 200 in contact with the switch contact pieces 21 of the door connection panel 2 on the inner lower front front center left and right sides of the driving part mounting frame 100 3, the pair of auxiliary locking devices 3 is provided with a limit switch 31 on the outer side of one side thereof and a locking rod 31 which is protruded and inserted into the sliding structure by a contact signal of the limit switch 31, (32);
A driving intermittence control box 4 is provided at a lower central portion of the opening / closing control operation device 1 to shut off the elevating / lowering operation of the elevator due to a foreign material interposition signal when the elevator door 200 is closed, (4) includes a pair of winding bobbins (41) which are elastically rotated in the forward and reverse directions by a spiral spring (411) and a ratchet pivot shaft (412) A door signal cable 42 symmetrically drawn out toward both left and right sides of the intermittent control box 4 and a foreign object interposing signal of an elevator door transmitted through the door signal cable 42 to calculate the elevating / A circuit control board (43) for blocking operation is accommodated;
The pair of elevator doors 200 are formed on the upper outer side surface with a pair of rod engaging holes P in which the locking rod 32 of the auxiliary locking device 3 is engaged by an insertion structure, And a closing signal sensing member 5 is further attached to the left and right closing contact surfaces of the sensor unit 200. The seating signal sensing member 5 has a pressure sensing sensor cable 51 and a close proximity sensor cable 52 , And the sensor cable exposure guide pipe (53) is extended in a horizontal protruding structure on the upper outer side surface.
The method of claim 1, further comprising:
The door signal cable 42 symmetrically drawn out in the left and right sides of the driving intermittence control box 4 is connected to the pressure sensor cable (not shown) drawn through the sensor cable exposure induction pipe 53 of the interference signal sensing member 5 51 and the close proximity sensor cable 52;
A pair of cable guiding rollers R for guiding the pulling-in and pulling-in action of the door signal cable 42 connected to the pressure detecting sensor cable 51 and the close proximity sensor cable 52, Wherein the guide roller R is installed symmetrically with respect to the drive interrupter control box 4 so as to be spaced apart from the left and right sides of the inner lower wall of the drive part mounting frame 100. [
The method of claim 1, further comprising:
The driving rack gear 12 that meshes with the upper side of the driving rack gears 12 and 12 'horizontally meshed with the upper and lower surfaces of the driving pinion gear 11 is connected to the power linkage 121 of the driving rack gear 12 And an operating interference avoiding groove (H) is further formed at a central portion of the elevator door safety opening / closing device.

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