JPS632874B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a vertical opening door device for an elevator used for raising and lowering general automobiles and special automobiles such as forklifts.

[Background of the invention]

Fig. 1 is a front view showing the landing entrance of an elevator equipped with a two-panel top-opening door device, in which 1 is the landing floor, 2 is the left and right pillars, 3 is the door rail attached to these, 4 is the lower door, 5 is the upper door. In addition, 6 is a door shoe installed at two places on the upper and lower sides of the upper and lower doors 4 and 5, and 7 is the upper door 5.
8 is an idle pulley attached to the left and right columns 2, 9 is a drive sprocket attached to the right column 2, and 10 is a chain connecting the upper and lower doors 4, 5 and the balance weight 11. . The upper and lower doors 4, 5 are guided by the door rail 3 and the door shoe 6 on the left and right sides, and suspended by a chain 10 while being balanced by a balance weight 11, and connected to an electric drive mechanism (not shown) of the drive sprocket 9. It is constructed so that it can be opened and closed vertically electrically.

By the way, in such a two-panel top-opening door device, as shown in FIG. The door 4 deforms in an arched manner toward the hoistway, and due to this deformation, the door shoe 6 of the lower door 4 comes off the door rail 3, leaving it suspended only by the chain 10. If the car 12 continues to advance at this point, there is a risk that the car 12 will fall into the hoistway and cause an accident resulting in injury or death.

[Purpose of the invention]

The present invention has been made in view of this point, and its purpose is to provide a safe system that will not fall into the hoistway even if a car etc. accidentally collides with the door from the landing side, and that can easily be installed in existing elevators. An object of the present invention is to provide a vertical opening door device for an elevator that is applicable and easy to manufacture.

[Summary of the invention]

In order to achieve this object, the present invention provides a door show with a hook part that protrudes toward the landing side, and also has a hook part on the left and right pillars that engages oppositely with the catch claw part of the door show when the door is in the closed position. The present invention is characterized in that a hook having a claw part is provided to prevent the door show from coming off the door rail even if the door is deformed by a collision with an automobile or the like from the landing side.

[Embodiments of the invention]

Hereinafter, the present invention will be explained in detail based on illustrated embodiments.

FIG. 3 is a front view showing a landing entrance of an automobile elevator equipped with a two-panel top-opening door device according to an embodiment of the present invention, and FIG. 4 is an enlarged sectional view taken along the line A-A in FIG. 3. . In these figures, the same reference numerals as in FIG. 1 indicate the same or equivalent parts.

This embodiment is different from the conventional example shown in FIG. A hook portion 6b protruding toward the landing side is integrally formed as an engagement member of the lower door 4, and is attached to the left and right pillars 2 as a second engagement member.
A hooking fitting 1 having a claw portion 13a that engages with the hooking claw portion 6b of the door shoe 6 oppositely with an appropriate gap when the door shoe is in the closed position, that is, on the lower side.
3 is that it is fixed with a bolt 14.

Therefore, as shown in FIG. 5, even if a car collides with the lower door 4 from the landing side and a load P is applied, thereby deforming the lower door 4 in an arch toward the hoistway side, the door show 6 The hook part 6b is the hook part 1
3, and the door shoe 6 does not come off from the door rail 3. Therefore, it is possible to prevent the automobile from falling into the hoistway.
Moreover, it is sufficient to simply use a door shoe with a hook part and attach the hook fittings to the left and right pillars, and there is no need to perform any processing on the door rail, so it can be easily applied to existing elevators. be able to.

In the above embodiment, the door shows are provided at two locations, upper and lower, on both the left and right ends of the door.
It is not limited to one location, but may be provided at three locations, or one location may be provided over the entire height of the door.

Furthermore, the present invention is not limited to the two-panel top-opening type door device, but can be similarly applied to a three-panel top-opening type door device.

Further, in the embodiment described above, the case where a car collided with the lower door was explained, but it is clear that the same method can be applied to the upper door as well.

〔Effect of the invention〕

As explained above, according to the present invention, even if an automobile or the like accidentally collides with the door from the landing side and the door is deformed as a result, the hook portion of the door show and the engaging claw portion of the hook fitting are Since they engage with each other and the door shows do not come off the door rails, it is possible to completely prevent automobiles from falling into the hoistway, and to significantly improve the safety of elevators equipped with vertically opening door devices.

Moreover, it is easy to manufacture the door shoe, as it is only necessary to use a door shoe with a hook part and attach the hook fittings to the left and right pillars, and there is no need to perform any processing on the door rail. It can also be easily applied.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the entrance/exit of a car elevator equipped with a conventional two-panel top-opening door system, and Fig. 2 is a longitudinal side view showing a state in which a car collides and falls with the door system shown in Fig. 1. , FIG. 3 is a front view showing a landing entrance of an automobile elevator equipped with a door device according to an embodiment of the present invention;
5 and 5 are enlarged sectional views taken along the line A--A in FIG. 3 before and after the automobile collides. 2... Pillar, 3... Door rail, 4... Lower door,
6...Door show, 6b...Hatch claw part, 13...
Hook fitting, 13a...engaging claw part.

Claims (1)

[Claims] 1. A vertically swinging door device for an elevator that opens and closes a plurality of doors vertically, comprising door rails attached to left and right pillars, and door shows that are attached to both left and right ends of each door and engage with the door rails, The door show is provided with a hook portion that protrudes toward the landing side, and the left and right pillars are provided with a hook having an engaging claw portion that engages oppositely with the hook portion of the door show when the door is in the closed position. An elevator door device that opens vertically.