JPS5847792A - Locking device for door at elevator platform side - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a locking device for an elevator landing door, and more particularly to a guard mounting structure for preventing entanglement with a traveling cable.

The elevator landing side door has the function of separating the elevator landing from the hoistway where elevator cars and cars go up and down, and the door must be locked when the elevator car does not arrive. When the elevator car arrives, a door opening/closing mechanism provided in the elevator car engages with the locked landing door to open and close the landing door. Further, although not directly related to the present invention, the landing side door is also required to have an aesthetic appearance.

As described above, a so-called locking device, which performs two functions: a locking function and a securing function for one closing, is provided on the landing side door of each floor. Figures 1 and 2
The figure shows the structure of a conventional landing door of this type.

A door handle 2 is fixed to the upper part of the door panel 1, and a door hanger roller 3 is rotatably attached to the door hanger 2. A locking device 4 is provided at the end of the door hanger 2, and a locking die 5 connected to a building (not shown) is engaged with the locking device 4. The door panel 1 is arranged so that the door hanger roller 3 of the door hanger 2 moves over the upper surface of the guide rail 6.
Further, the door guide shoe 7 attached to the lower part of the door panel 1 is opened and closed by fitting into a groove in the landing sill 8 and sliding. Note that the door guide shoe 7 has a function of preventing the door panel 1 from swinging.

The locking device 4 is configured to engage with a locking mold 5 attached to a building (not shown) when the door panel 1 is closed, and when the door panel 1 is opened, the locking device 4 and the locking mold 5 are engaged with each other when the door panel 1 is opened. The mesh has become disengaged.

FIG. 3 shows the relationship between the landing side door and the elevator car. That is, a door panel 1 and components such as a guide rail 6 and a landing sill 8 for guiding the door panel 1 are attached to each floor. Since the elevator seats 9 are raised and lowered while being held close to their front surfaces, the traveling cables 1.0 connected to the seats 9 for power supply, control, and signal transmission are connected to the aforementioned guide rails and There is a possibility that it will approach platform threshold 8. The approach of the traveling cable 10 may be caused by movement of the rider 9 to raise, lower, or stop, or by an earthquake, etc.
This is caused by the traveling cable 10 swinging from side to side, but the traveling cable 10 may come into contact with the locking device 4 and damage the main body of the device.
We must try to avoid cutting 0 itself.

4 to 6 show specific examples of conventional locking devices. Pace 11 is the mounting seat of the locking device body,
It is attached to the door hanger 2 mentioned above. A hook shaft 12 and a fixed roller shaft 13 are supported on the pace 11, and a locking hook 14 is rotatably attached to the hook shaft 12. This locking hook 14 is provided with a groove (or notch) 14A into which the locking die 5 is fitted, and a movable roller shaft 16 that rotatably supports the movable roller 15 is attached. Further, a fixed row 217 is attached to the fixed roller shaft 13, and a cushion 18 is attached to the lower surface. This cushion 18Ua serves to hold the lock 7zuku 14 in a horizontal state.

As shown in FIG. 1, in order to open the door panel 1 in the closed state, it is necessary to move the door panel 1 to the right, and it is also necessary to release the lock from the locked and downward position. A door opening/closing device (not shown) provided on the car seat 9 allows the fourth
When the movable row 215 shown in FIGS.
The lock is rotated one clockwise direction, and the lock is released from the locking die 5 to unlock it. If this movable roller 15 is still pressed to the right, it comes into contact with the fixed roller 17, and the force that tends to move the movable roller 15 acts via the fixed roller shaft 13 to move the base ll'ii-. Therefore, the door hanger 2 to which the pace 11 is attached and the door panel 1 supported by it move, and the landing side door opens.

In this way, the movable roller 15 and the fixed roller 13 receive the force from the landing heel 9, so that they are structured to protrude more toward the hoistway than the landing sill 8. Therefore, when the traveling cable 10 swings left and right, the movable roller shaft 1
6 or the lower surface of the fixed roller shaft 13, and troubles such as getting stuck rarely occur. To prevent this,
Conventionally, a structure in which the lower surface of the pace 11 is bent has been used. The lower surface of the pace 11 is sloped so that even when the traveling cable 10 comes into contact with the cable 10, the cable 10 is pushed outward by the bent part, that is, toward the hoistway side, thereby preventing the cable 10 from getting caught. Met.

However, such a conventional structure in which the lower surface of the pace 11 is bent has the following drawbacks.

In order to prevent the movement of the locking hook 14 from being hindered, the bent portion must be kept at a constant distance from the hook shaft 12 and the lower surface of the locking hook 14. For this reason, the base 11 is It had to be something big. If this base 11 becomes large, the dimension from the landing sill 8 to the top surface of the locking device 4 will become too narrow for the elevator landing side door of each floor. Therefore, it is necessary to reduce the distance between the doors of each floor. become unable to do so. For this reason, it becomes impossible to reduce the heightwise spacing between the floors of the building, that is, the floor pitch. Therefore, it is required to make the base 11 smaller.

Furthermore, since the lower surface of the base 11 is bent at an acute angle, there is a risk that the material of the base 11 itself may crack or break during this bending operation. In order to prevent this, if the traveling cable 10 is bent at an obtuse angle, it becomes impossible to prevent the traveling cable 10 from being caught, and the dimensions of the base 11 also increase in the width direction.

Furthermore, it is necessary to provide an opening in the bent portion of the lower surface of the base 11 to enable inspection of the bearing portion of the hook shaft 12, which complicates the manufacturing work.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a locking device for an elevator landing door that eliminates the above-mentioned drawbacks, has a small base, and is easy to manufacture.

The present invention has a structure in which the base does not bend by arranging a guard having an inclined surface that is separate from the base between the front surface of the locking hook and the lower side of the movable roller.

Hereinafter, one embodiment of the elevator landing side door locking device of the present invention will be described with reference to FIGS. 7 to 9.
This will be explained using figures.

A base 19 made of a rectangular flat plate supports a hook shaft 12 and a fixed roller shaft 13.

A locking hook 14 is rotatably attached to the hook shaft 12, and this locking hook 14 is provided with a groove 14A that engages with a locking mold, and rotatably supports a movable roller 15. A movable roller shaft 16 is attached.

A fixed roller 17 is rotatably attached to the fixed roller shaft 13, and a cushion 18 is attached to the lower surface of the fixed roller 17. The feature of this embodiment is that a guard 20, which projects while tilting in the direction of the fixed roller shaft 13, is fixed to the locking hook 14 by bolting. This guard 20 prevents the traveling cable from coming into contact with the movable roller 15 and fixed roller 17. In addition, Guard 20
Since the bending shape is an obtuse angle, there is no risk of cracks or cracks occurring in the material.

According to this embodiment, a separate guard 20 for preventing the traveling cable from contacting the locking device is attached to the locking hook 14.
Since the base 19 is attached to the base 19, it has the effect of making it possible to downsize the base 19, and since the shape of the base 19 is also a rectangular flat plate, it has the effect of improving the material yield and facilitating processing during manufacturing. be. Therefore, it becomes possible to reduce the floor pitch on which the elevator is installed. Note that the guard 20 may be fixed to the lock hook 14 by rivets or other fixing methods, and even if it is fixed by a method such as welding, the function of reducing weight and size will not be lost. Furthermore, the guard 20 of the above embodiment is not a flat plate with an inclined shape, but it is also possible to use a conical shape that is aligned with the center of the hook shaft 12, or a conical shape that is not aligned with the center. , has a similar effect.

10 and 11 show other embodiments of the present invention. In this embodiment, the guard 21 is attached to the fixed roller shaft 13.
It has a structure in which it is fixed using an auxiliary metal fitting such as a presser 22. The guard 21 in this case has a shape in which the tip is bent toward the fixed roller shaft 13 in a chain-like shape. Even if the guard 21 having such a configuration is used, the same effect as in the previous embodiment can be obtained.
A similar effect can be obtained by using a conical shape whose center coincides with the center of the roller shaft 13, or a conical shape whose center is close to the center of the roller shaft 13.

As described above, the elevator door locking device of the present invention has the advantage that the locking device has a small base and can be manufactured easily.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the structure of a conventional elevator landing door, FIG. 2 is a side view of FIG. 1, FIG. 3 is a schematic front view showing the relationship between the elevator car and the elevator landing door, and FIG. Figure 4 is a front view showing the structure of a conventional locking device, Figure 5 is a plan view of Figure 4, Figure 6 is a side view of Figure 4, and Figure 7 is a side view of Figure 4.
The figure is a front view showing an embodiment of the elevator landing side door locking device of the present invention, Figure 8 is a plan view of Figure 7, Figure 9 is a side view of Figure 7, and Figure 10 is the present invention. FIG. 11 is a front view showing another embodiment, and FIG. 11 is a side view of FIG. 10. Death...Lock claw, 10...Traveling cable, 13
...Fixed roller shaft, 14...Lock hook %15...
・Movable roller, 17...Fixed loaf, 19...Base, 20°6 δ Kaya 4 Fig. 2 50 Fig. 7 Leather δ Fig. 2 ts z. 2

Claims (1)

[Claims] 1. A lock hook that engages with a lock type connected to the building, a movable roller that moves in response to force from the car, and the movable roller contacts and applies the force to the base. and a fixed roller that transmits the same, and is attached to the door on the elevator landing side, where the front part of the locking hook and the lower surface part on the base side of the movable roller. Have you attached a guard to the locking hook that is separate from the base and has a surface that slopes toward the movable roller? : Features a locking device for elevator landing side doors. 2. A locking device for an elevator hall door according to claim 1, wherein the guard is attached to a fixed roller shaft that supports a fixed roller. 3. Is the guard aligned with the center of the fixed roller shaft?
A locking device for an elevator hall door according to claim 1 or 2, characterized in that it has a conical shape with centers substantially adjacent to each other.