JPS5848311Y2 - Elevator hall door locking device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a safety device for an elevator hall door.

The elevator hall doors on each floor of the building are equipped with locks, and are locked except when the elevator corner arrives.
It can be opened with a key in the event of maintenance or an accident.

By the way, safety devices are installed at the lowest part of the elevator hoistway (hoistway bottom) 2, so when installing the elevator, workers must access the lowest part of the hoistway through the elevator hall door 3 on the lowest floor. I travel frequently to and from.

For this reason, the hoistway has a height of 1.2 to 1.87 mm below the lowest floor floor surface.
71 A scaffold 4 is provided which reaches the lowered position.

The installation worker may unlock the hall door 3 of the elevator on the lowest floor 5 and jump down from there to the scaffolding 4.

In such a case, there is a danger that the person may open the hall door above the bottom floor 5 by mistakenly thinking it is the one on the bottom floor 5, and fly downwards, causing an accident.

In order to prevent such accidents from occurring, the present invention is a device that can prevent accidents by determining whether or not the floor to be unlocked is the lowest floor at the time of unlocking the hall door. The purpose is to provide

An embodiment of the present invention will be described based on the drawings.

FIG. 2 is a front view of the hall door.

The hall door 3a has a lock hole 6.

In FIG. 3, a protruding portion of the leaf spring γ is provided outside the lock hole 6 so as to protrude into the key hole 6 as shown.

By using a button as a keyhole with such a configuration, when the key 8 is inserted, it contacts the spring γ and conveys a tactile response that it is hard.
By calling attention to safety awareness, it is a warning to be cautious about the next action (movement).

Even if such keyholes are installed in all the hall doors on floors other than the lowest floor, it is possible for people to mistakenly think that they are on the lowest floor and jump off without checking inside the hoistway, causing an accident. It disappears.

Another embodiment of the present invention will be explained with reference to FIGS. 4, 5 and 6.

The devices shown in FIGS. 4 and 5 can be easily attached to a device that functions as a spring, in this case a conventional elevator hall door, by using a resin clip 9.

The one shown in Fig. 6 has a protruding operating button for the electric switch 10 instead of a spring, which is operated, and is placed on the front side of the hall door.
This is a device that calls attention visually or audibly by providing a lamp or buzzer.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the hoistway, Fig. 2 is a front view of the hall door, Fig. 3 is a sectional view of the keyhole according to the present invention, Fig. 4 is a sectional view of the keyhole of another embodiment of the present invention, 5 is a front view of FIG. 4, and FIG. 6 is a sectional view of still another embodiment.

Claims (1)

[Scope of utility model registration request] A leaf spring is fixed to the outside of the keyhole of the locking device, facing the locking device of each hall door of the hall door 7 of each floor of the elevator except for the hall door of the lowest floor, and the tip of this leaf spring is fixed to the inside of the keyhole. A locking device for an elevator hall door that protrudes from a cylinder so that an inserted key is pressed by the tip of the leaf spring.