CN109562918B

CN109562918B - Elevator door device

Info

Publication number: CN109562918B
Application number: CN201680087993.8A
Authority: CN
Inventors: 津谷夏希; 北泽昌也; 森永章吾
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2016-08-02
Filing date: 2016-08-02
Publication date: 2020-09-08
Anticipated expiration: 2036-08-02
Also published as: WO2018025328A1; DE112016007112T5; CN109562918A; JPWO2018025328A1; JP6580268B2

Abstract

In an elevator door device, an elevator door is provided with: a door panel; a door hanger fixed to an upper portion of the door panel; and a hanger roller provided to the door hanger and rolling along the door guide rail during opening and closing operations. A contact member is fixed to the gantry. The contact member protrudes from the door hanger to the lower side of the door guide rail, and when an external force is applied to the door panel, the contact member contacts with the lower portion of the door guide rail, thereby suppressing the inclination of the elevator door around the contact point of the hanger roller and the door guide rail.

Description

Elevator door device

Technical Field

The present invention relates to an elevator door device having an elevator door suspended from a door guide rail.

Background

In a conventional elevator door device, a 1 st engaging member is fixed to a 1 st door hanger, and a 2 nd engaging member is fixed to a 2 nd door hanger. Further, an engaged member is fixed to the door top case (see, for example, patent document 1).

In another conventional elevator door apparatus, a stopper for preventing inclination is provided at an upper end portion of a hanger plate so as to face a hanger box (see, for example, patent document 2).

In addition, in another conventional elevator door apparatus, a guide roller is provided to the door hanger, thereby suppressing the inclination of the door hanger (see, for example, patent document 3).

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2011-

Patent document 2: japanese laid-open patent publication No. 2006-137518

Patent document 3: japanese patent No. 5569595

Disclosure of Invention

Problems to be solved by the invention

In the conventional elevator door device shown in patent document 1, since the engaging members are fixed to the 1 st and 2 nd door hangers, respectively, and the engaged members are fixed to the door top box, the number of parts is large, and the mounting work is troublesome.

In the conventional elevator door apparatus shown in patent document 2, since the inclination preventing stopper is provided at the upper end portion of the hanger plate, a portion of the hanger plate above the hanger roller must be extended upward, and the shape of the hanger plate must be changed. In addition, the hanger plate is large.

In the conventional elevator door apparatus shown in patent document 3, since the inclination of the door hanger is suppressed by the friction between the guide roller and the door guide rail, the door hanger may be inclined when the door panel receives a large external force.

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an elevator door device capable of preventing a hanger roller from falling off a door rail with a simpler structure.

Means for solving the problems

An elevator door device of the present invention includes: a door guide rail; an elevator door having: a door panel; a door hanger fixed to an upper portion of the door panel; and a hanger roller provided to the door hanger, rolling along the door guide rail during opening and closing operations, and from which the elevator door is suspended; and an abutting member fixed to the door hanger and protruding from the door hanger to a lower side of the door guide rail, wherein when an external force is applied to the door panel, the abutting member abuts against a lower portion of the door guide rail, and the inclination of the elevator door is suppressed with the hanger roller and the door guide rail as a center.

Effects of the invention

The elevator door device of the invention fixes the abutting component on the door hanger, when the external force is applied to the door panel, the abutting component abuts against the lower part of the door guide rail, and the elevator door is restrained from inclining by taking the contact point of the hanger roller and the door guide rail as the center, therefore, the hanger roller can be prevented from falling off from the door guide rail by a simpler structure.

Drawings

Fig. 1 is a front view showing a main part of an elevator landing door apparatus according to embodiment 1 of the present invention.

Fig. 2 is a front view showing the 2 nd gantry 9 of fig. 1 in an enlarged manner.

Fig. 3 is a sectional view taken along the line III-III of fig. 2.

Fig. 4 is a cross-sectional view showing a state in which an external force is applied from the landing side to the shaft side to the 2 nd door panel of fig. 3.

Fig. 5 is a sectional view showing the bolt of fig. 4 in an enlarged manner.

Detailed Description

The following describes a mode for carrying out the present invention with reference to the drawings.

Embodiment mode 1

Fig. 1 is a front view showing a main part of a landing door apparatus of an elevator according to embodiment 1 of the present invention, that is, a view of an upper part of the landing door apparatus viewed from a hoistway side.

In the figure, a hanger case 1 is fixed to an upper portion of a landing doorway in a hoistway. The hanger case 1 is provided with a horizontal door rail 2. The landing doorway is opened and closed by elevator doors, i.e., the 1 st and 2 nd landing doors 3 and 4. The 1 st and 2 nd landing doors 3 and 4 are suspended from the door rail 2.

The 1 st landing door 3 includes: the 1 st door panel 5; a 1 st door hanger 6 fixed to an upper portion of the 1 st door panel 5; and a pair of first hanger rollers 7 provided on the first door hanger 6 and rolling along the door rail 2 during opening and closing operations.

The 2 nd landing door 4 includes: a 2 nd door panel 8; a 2 nd door hanger 9 fixed to an upper portion of the 2 nd door panel 8; and a pair of second hanger rollers 10 provided on the second hanger 9 and rolling along the door rail 2 during opening and closing operations. Further, the 2 nd landing door 4 is opened and closed in a direction opposite to the 1 st landing door 3 in conjunction with the opening and closing operation of the 1 st landing door 3.

An attachment plate 11 is fixed to the hanger case 1. When the 1 st and 2 nd landing doors 3 and 4 are in the fully closed state, the mounting plate 11 is disposed between the 1 st and 2

nd door hangers

6 and 9 as viewed from the hoistway side.

A latch receiving member 12 is fixed to the mounting plate 11. The latch receiving member 12 has a U-shaped hook portion 12 a. When the 1 st and 2 nd landing doors 3 and 4 are in the fully closed state, the hook portion 12a overlaps the 1 st door hanger 6 and is disposed on the hoistway side of the 1 st door hanger 6 as viewed from the hoistway side.

The 1 st gantry 6 is provided with a latch 14. The latch 14 is rotatable about a base end portion. When the 1 st and 2 nd landing doors 3 and 4 are in the fully closed state, the latch 14 hooks the hooking portion 12a, and prevents the 1 st and 2 nd landing doors 3 and 4 from moving in the door opening direction.

A fixed-side interlocking roller 15 and a movable-side interlocking roller 16 are provided at the base end portion of the latch 14. When the car (not shown) stops and the car door (not shown) opens the door, the movable-side interlock roller 16 is pressed by a car-side release device (not shown), and the movable-side interlock roller 16 and the latch 14 rotate. Thereby, the latch 14 is disengaged from the latch receiving member 12, and the 1 st and 2 nd landing doors 3 and 4 can perform the door opening operation. When the 1 st and 2 nd landing doors 3 and 4 move to the fully closed position, the latch 14 hooks the hook portion 12 a.

An interlock switch 17 for detecting whether or not the latch 14 is hooked on the latch receiving member 12 is provided between the hanger case 1 and the latch 14. The interlock switch 17 includes: an interlock contact 18 provided on the latch receiving member 12 of the mounting plate 11; and a lock contact 19 fixed to the latch 14.

When the 1 st and 2 nd landing doors 3 and 4 are in the fully closed state and the latch 14 is hooked on the hook portion 12a, the lock contact 19 comes into contact with the interlock contact 18 and the interlock switch 17 is closed. When the latch 14 is disengaged from the hook portion 12a, the lock contact 19 is separated from the interlock contact 18, and the interlock switch 17 is turned off.

Fig. 2 is a front view showing the 2 nd gantry 9 of fig. 1 in an enlarged manner, and fig. 3 is a sectional view taken along the line III-III of fig. 2. The door rail 2 has: a main guide 2a having an arc-shaped cross section and hooked on the second hanger roller 10; a guide rail vertical portion 2b that protrudes vertically downward from an end portion of the main guide portion 2a on the 2 nd gantry 9 side and faces the 2 nd gantry 9; and a guide rail lower end portion 2c that protrudes from a lower end portion of the guide rail vertical portion 2b at a right angle to a side opposite to the 2 nd door hanger 9, that is, a landing side.

The 2 nd gantry 9 is provided with a pair of anti-drop rollers 21 so as to be rotatable. Each of the drop-off prevention rollers 21 is disposed directly below the corresponding 2 nd hanger roller 10. The anti-slip roller 21 is opposed to or in contact with the lower surface of the guide rail lower end portion 2 c.

A plurality of bolts 22, which are a pair of contact members here, are fixed to the 2 nd gantry 9. The bolts 22 are disposed at intervals in the width direction (the left-right direction in fig. 2) of the 2 nd landing door 4. The bolt 22 is disposed closer to the center in the width direction of the 2 nd landing door 4 than the pair of drop-off prevention rollers 21.

Each bolt 22 has a head portion 22a and a threaded portion 22 b. The head 22a is disposed on the side of the 2 nd gantry 9 opposite to the door rail 2, i.e., on the hoistway side. The screw portion 22b penetrates the 2 nd door hanger 9 and protrudes downward of the door rail 2.

The threaded portion 22b is disposed horizontally and at right angles to the opening/closing direction of the 2 nd landing door 4. The threaded portion 22b faces the lower surface of the guide rail lower end portion 2c with a slight gap therebetween so as not to interfere with the opening and closing operation of the 2 nd landing door 4.

The gap between the lower surface of the rail lower end 2c and the bolt 22 is larger than the gap between the lower surface of the rail lower end 2c and the retaining roller 21. Thus, even if the drop-off prevention roller 21 comes into contact with the rail lower end portion 2c during the normal opening and closing operation of the 2 nd landing door 4, the bolt 22 does not come into contact with the rail lower end portion 2 c.

Further, the 2 nd hanger roller 10 is of a structure: flange portions are provided at both ends in the axial direction, and a groove into which the main guide portion 2a is inserted is provided between outer peripheral portions of the flange portions. The gap between the lower surface of the rail lower end portion 2c and the bolt 22 is smaller than the height of the flange portion of the 2 nd hanger roller 10 from the bottom surface of the groove.

Further, the tip of the screw portion 22b is located at a position farther from the 2 nd door hanger 9 than the end surface of the drop-off prevention roller 21 on the opposite side to the 2 nd door hanger 9.

Fig. 4 is a cross-sectional view showing a state in which an external force is applied from the landing side to the shaft side to the 2 nd door panel 8 of fig. 3,

fig. 5 is a sectional view showing the bolt 22 of fig. 4 in an enlarged manner. When an external force is applied to the design surface of the 2 nd door panel 8 in the arrow direction of fig. 4, the 2 nd landing door 4 rotates about the contact point of the 2 nd hanger roller 10 with the main guide 2 a.

At this time, the anti-slip roller 21 abuts on the rail lower end portion 2c, and applies resistance to the rotation of the 2 nd landing door 4 by friction. However, when the external force is large, the 2 nd landing door 4 is tilted until the escape prevention roller 21 is disengaged from the rail lower end portion 2 c. Even in this case, in embodiment 1, the thread of the threaded portion 22b of the bolt 22 abuts against and is engaged with the end portion of the rail lower end portion 2c, that is, the corner portion formed by the rail vertical portion 2b and the rail lower end portion 2c, so that the inclination of the 2 nd landing door 4 is suppressed, and the 2 nd hanger roller 10 is prevented from falling off from the main guide portion 2 a.

Here, the bolt 22 is preferably made of a material having higher hardness than the material of the door rail 2. This enhances the engagement of the bolt 22 with the guide rail lower end portion 2c, and further reliably prevents the 2 nd hanger roller 10 from coming off the main guide portion 2 a.

Further, the 1 st door hanger 6 is also provided with the drop-off prevention roller 21 and the bolt 22 in the same manner as the 2 nd door hanger 9, and the 1 st hanger roller 7 is prevented from dropping off from the door rail 2.

In such a landing door device for an elevator, the bolts 22 are provided in the 1 st and 2

nd door hangers

6 and 9, and therefore, the 1 st and 2 nd hanger rollers 7 and 10 can be prevented from falling off the door rail 2 with a simpler structure.

Further, since the tip of the bolt 22 is located at a position farther from the 1 st and 2

nd door hangers

6 and 9 than the end surface of the drop-off prevention roller 21 on the opposite side to the 1 st and 2

nd door hangers

6 and 9, even if the drop-off prevention roller 21 is dropped off from the lower end portion of the door rail 2, the 1 st and 2 nd hanger rollers 7 and 10 can be prevented from dropping off from the door rail 2 by the bolt 22. This can increase the allowable inclination of the 1 st and 2

nd door hangers

6 and 9.

Further, since the 2 bolts 22 are arranged at intervals in the width direction of the 1 st and 2 nd landing doors 3 and 4, the 1 st and 2 nd landing doors 3 and 4 can be prevented from attempting to rotate about the vertical axis due to an external force.

In addition, although the landing door device is described in embodiment 1, the contact member of the present invention can be applied to a car door device.

Although embodiment 1 shows a door device having 1 st and 2 nd landing doors 3 and 4, the present invention can be applied to a door device having only 1 elevator door or a door device having 3 or more elevator doors.

Further, in embodiment 1, the bolt 22 is shown as the contact member, but the contact member is not limited thereto. For example, a rack-shaped member having teeth only on the upper surface may be used.

The contact member is preferably a member having a plurality of teeth, i.e., a plurality of sharp projections, which are engaged with the lower end portion of the door guide, or a member which is in frictional contact with the lower end portion of the door guide. The bolt 22 of embodiment 1 uses a thread as a tooth.

Further, as the member which is brought into frictional contact with the lower end portion of the door guide, in order to increase the frictional force between the lower end portion of the door guide and the abutment member, there may be mentioned a member in which a contact surface of the abutment member which is brought into contact with the door guide is roughened in a file shape, or a member in which a contact surface of the abutment member which is brought into contact with the door guide is made of a high friction material such as rubber having a higher friction coefficient than steel.

The number of the contact members provided in 1 door hanger is not limited to 2, and may be 1 or 3 or more.

In embodiment 1, the anti-slip roller 21 and the bolt 22 are used in combination, but the anti-slip roller 21 may be omitted.

Claims

1. An elevator door device is provided with:

a door guide rail;

an elevator door having: a door panel; a door hanger fixed to an upper portion of the door panel; and a hanger roller provided to the door hanger, rolling along the door guide rail during opening and closing operations, and suspending the elevator door from the door guide rail;

a drop-off prevention roller which is rotatably provided in the door hanger and faces or contacts a lower surface of the door rail; and

an abutting member fixed to the door hanger and protruding from the door hanger to a lower side of the door guide rail, the abutting member abutting against a lower portion of the door guide rail when an external force is applied to the door panel, and suppressing inclination of the elevator door about a contact point of the hanger roller and the door guide rail,

the front end of the contact member is located at a position farther from the door hanger than an end surface of the drop-off prevention roller on the side opposite to the door hanger.

2. The elevator door apparatus according to claim 1,

the size of the gap between the lower surface of the door guide rail and the abutment member is larger than the size between the lower surface of the door guide rail and the drop-off prevention roller.

3. The elevator door apparatus according to claim 1,

the abutment members are fixed to the door hanger at intervals in a width direction of the elevator door.

4. The elevator door device of claim 2,

5. The elevator door apparatus according to any one of claims 1 to 4,

the abutting part is a bolt, and the abutting part is a bolt,

the bolt has a thread part engaged with the lower part of the door guide rail to restrain the inclination of the elevator door.

6. The elevator door apparatus according to any one of claims 1 to 4,

the contact member is made of a material having a higher hardness than a material of the door rail.

7. The elevator door apparatus according to claim 5, wherein,