JPH0289793A - Door device for elevator - Google Patents

Abstract

PURPOSE:To make it impossible to open a landing door when a riding cage is passing even with an elevator having passing floors by setting the landing unloading zone of a landing door in the engaging zone of an engaging device. CONSTITUTION:When a riding cage 37 is passing through an intermediate-floor landing place, a door lock device provided on a landing door 7 is unlocked due to an unlocking fixed cam 25 provided on a cage side, whereas, a door lock device on the riding cage 37 side is not unlocked since the riding cage 37 is not stopped. That is, a latch 47 is engaged with a catch 59. At this time, even if an attempt is made to open the unlocked landing door 7, since the landing unlocking zone of the landing door 7 is within the engaging zone of an engaging device, the landing door 7 is restrained by the locking condition of the riding cage door 17 and unable to be opened. Finally, as the landing unlocking zone of the landing door 7 passes through the engaging zone, the door lock device of the landing door 7 is returned to a locked condition.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to improvements in elevator door devices.

(Prior Art) Conventionally, elevator doors are comprised of a car door installed in a passenger car and a landing door installed at a floor entrance of a building. In order to prevent people from opening the door from the landing and falling into the hoistway, the landing door is equipped with a door switch that connects the elevator to the elevator only when the door is closed. A locking device is provided which prevents the car door from being opened when the passenger is not in the landing position.

As one such locking device, a fixed cam unlocking type door locking device is known, which is used in elevators such as elevators for private residences in which elevator cars have a slow elevator speed.

For example, as shown in Fig. 4, a door lock device using a conventional fixed cam unlocking method has a sill 1 installed on the floor and a sill 1 extending vertically upward on both sides of the sill 1. It is framed by back angles 3A and 3B, and a hanger case 5 provided between the back angles 3A and 3B.

This sill 1. A landing door 7 is provided in the space of the frame formed by the back angles 3A, 3B and the hanger case 5. A guide shoe 9 attached to the lower end of the landing door 7 is engaged with a hole sill 11 attached to the back side of the sill 1.

On the other hand, the hanger case 5 is provided with a hanger rail 13 extending in the left-right direction. Further, a hanger 15 is provided at the top of the landing door 7, and a plurality of rollers 17 are rotatably supported on the hanger 15. The landing door 7 is opened and closed by the plurality of rows 517 being guided by the hanger rail 13 and the guide shoe 9 being guided by the holes and sills 11 and moving in the left and right directions.

As shown in FIGS. 4, 5, and 6, a door lock device 19 for the landing door 7 is provided at the left end of the hanger case 5, and normally the door lock device 1
A latch 21 of No. 9 engages with a catch 23 fixed to the upper left end of the landing door 7 to lock the landing door 7.

Now, when the car (not shown) approaches the landing position, the unlocking fixed cam 25 fixed to the car moves as shown in FIG.
The roller 27 provided at the 11th pane portion of the latch 21 is pressed. When this roller 27 is pressed, the latch 21
rotates counterclockwise in FIG. 6 against the biasing force of a spring 31 attached to the door lock device 19 using the support shaft 29 as a fulcrum. As a result, the tip 33 of the latch 21 separates from the catch 23, and the landing door 7 becomes unlocked and can be opened and closed freely.

Further, when the car leaves the landing position, the locking state is reversed to the unlocked state described above. As shown in FIG. 6, the area where the unlocking/fixing cam 25 is within the distance 11iltH is the landing unlocking zone.

(Problem to be Solved by the Invention) However, the above-mentioned conventional elevator door device 1
9, if the elevator stops at three or more floors and there is a passing floor, the landing door 7 is unlocked by the unlocking/fixing cam 25 on the car side even when the car passes through an intermediate floor. Therefore, even if the car is running, the landing area unlocked zone (H
), the landing door 7 on the intermediate floor can be unlocked and opened freely. Therefore, there is a problem in that the elevator may be stopped due to the action of the door switch.

The purpose of this invention is to improve the above-mentioned problem by using a fixed cam type door locking device as a locking device for a landing door, and to provide a safe system in which the landing door cannot be opened while a car is passing, even in elevators with passing floors. Our purpose is to provide elevator door equipment.

[Structure of the Invention (Means for Solving the Problems)] In order to achieve the above object, the present invention provides an elevator in which the landing and the car each have a door and the number of stopping floors is three or more. , a landing door locking device which is provided on the landing door and is unlocked by an unlocking fixed cam provided on the car side; and a car door lock device which is provided on the car door and is locked when the car is running. The elevator is provided with a door lock device and an engagement device that opens and closes the landing door and the car door together, and a landing unlock zone of the landing door is set within an engagement zone of the engagement device. Developed a new door device.

(Function) By employing the elevator door device of the present invention, when a car is passing through an intermediate floor landing, the door lock device provided on the landing door is locked by the unlocking fixed cam provided on the car side. However, the door lock device on the east car side is not unlocked because the car is not stopped. Here, even if an attempt is made to open the unlocked hall door, since the hall unlock zone of the hall door is within the engagement zone of the engagement device, the car door is restricted to the locked state and cannot be opened. When the landing unlock zone of the landing door eventually passes the engagement zone, the door locking device of the landing door is returned to the locked state.

(Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a plan view showing the main parts of a landing door and a car door according to the present invention. In FIG. 1, parts that are the same as those explained in the prior art will be described with the same reference numerals, and the door lock device of the landing door is the same as that already explained in the prior art, so detailed explanation will be omitted. do.

In FIG. 1, a U-shaped engagement plate 35, which is part of an engagement device, is provided on the back surface of the landing door 7.

Further, a car door 37 is arranged behind the landing door 7 (lower side in FIG. 1), and a rotatable engagement roller 39 is provided at a position facing the engagement plate 35 for the car door 3.
It is supported on a shaft 41 attached to 7. Furthermore, the engagement roller 39 is located inside both rising surfaces of the engagement plate 35 with a slight gap between them.

By opening or closing one of the landing door 7 and the car door 37 when the car lands on the floor, the other door can also be opened and closed in an integrated manner.

That is, the engagement plate 35 and the engagement roller 39 constitute an engagement device, and the engagement plate 35 has a length that allows it to engage with the engagement roller 39 even if the maximum landing error occurs, and the length shown in FIG. As shown, it has a length that allows engagement in an engagement zone wider than the landing unlocking zone ()-1) by the unlocking fixed cam 25.

As shown in FIG. 3, a door lock device 45 is provided at the end of the hanger case 43 on the car door 37, and when the car is stopped, the door lock device 45
The latch 47 of No. 5 is pulled upward by a tension spring 49 attached to the door lock device 45 and is in the unlocked state.

The latch 47 is rotatably supported by a support shaft 51 on the door lock device 45, and the rear end of the wrap 47 connects a connecting plate 57 to a plunger 55 of an electromagnetic solenoid 53 fixed to the upper end of the hanger case 43. connected via.

The electromagnetic solenoid 53 has an operating circuit configured to perform a suction operation only when the car is running.
The plunger 55 and the connecting plate 57 move upward, and the latch 47 rotates counterclockwise about the support shaft 51 in FIG. As a result, the opening 5 provided at the upper right end of the car door 37
9 will be engaged and locked.

Considering the case where the car is passing through an intermediate floor landing, when the car enters the landing door unlocking zone (1''), the unlocking fixed cam 25 fixed to the car is activated by the landing door locking device. Press the roller 27 of No. 19.

When the unlocking fixed cam 25 presses the roller 27, the latch 21 rotates about the support shaft 29, and the tip 33 of the latch 21 separates from the catch 23 of the landing door 7, and the landing door 7 is unlocked. .

However, since the car is running, the electromagnetic solenoid 53 is energized and the car door 37 is in a locked state. That is, the tip of the latch 47 is engaged with the catch 59.

Furthermore, since the landing door 7 and the car door 37 are currently in an engaged state, even if a passenger attempts to open the landing door 7, the engagement plate 35 and the engagement roller 39 of the engagement device are not engaged and integrated. There is. Therefore, the car door 37 is restricted to the locked state, and the landing door 7 cannot be opened.

Further, when the car stops at the intermediate floor landing, the electromagnetic solenoid 53 is not energized and the car door 37 is also unlocked, so the landing door 7 can be opened and closed.

Therefore, when the above-mentioned door lock device is used, the landing door 7 cannot be opened even when the car is passing through an intermediate floor, so passengers at the landing will not accidentally cause an emergency stop of the elevator. Further, an inexpensive fixed cam unlocking type door locking device having a simple structure can be used for the landing door 7, and an advantage is obtained in that there is no need to provide an electrical operating device for locking the landing door.

Note that this invention is not limited to the embodiments described above, and can be implemented in other embodiments by making appropriate changes. For example, in this embodiment, an example in which an electromagnetic solenoid is used as the locking device for the car door has been described, but the car door may be an electric door, and the opened/unlocked state may be maintained by the rotational force of the electric motor. Further, although this embodiment has been described with respect to a door that opens horizontally, the present invention can be similarly applied to a door that opens vertically.

[Effects of the Invention] As can be understood from the above description of the embodiments, according to the present invention, a fixed cam unlocking type door locking device with a simple structure and reliable operation is used as a door locking device for a landing door. However, it is safe because the landing door cannot be opened even when the car passes through the intermediate floor. Therefore, the landing door will not open unless the car stops at the landing, so no one will accidentally fall into the hoistway.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the main parts of the landing door and car door according to the present invention, FIG. 2 is a diagram showing the relationship between the landing door unlocking zone and the engagement zone of the landing door, and FIG. 4 is a detailed view of the car door locking device according to the present invention, FIG. 4 is an overall view of a landing door in a conventional elevator as seen from the car side, and FIG. 5 is an enlarged detailed view of the section viewed from arrow V in FIG. 4. FIG. 6 is a diagram showing the locked state, and FIG. 6 is a diagram showing the unlocked state in FIG.

Claims (1)

[Claims] In an elevator that has a door for each landing and car and has three or more floors to stop, it is unlocked by a fixed unlocking cam that is installed on the landing door and on the car side. The vehicle includes a landing door lock device, a car door lock device that is provided on the car door and is locked when the car is running, and an engagement device that opens and closes the landing door and the car door together. Additionally, an elevator door device characterized in that a landing unlock zone of the landing door is set within an engagement zone of the engagement device.