US 2019/0093389 A1 · Elevator Fixture Magnetic Slide Latch and Control Box Equipped Therewith

Abstract

An elevator call box with internal, concealable latching mechanism comprises an internally disposed, cylindrical magnetic pin with a relatively low pull force that is slidably displaceable by an larger, external magnetic force supplied by a service technician. When the access door is closed, magnetic pin penetrates an orifice in a locking tab to lock the call box. The pin magnet is normally attracted to an adjacent, magnetically attractive clip snap-fitted to a latching block. The latch is externally disengaged via a stronger portable magnet carried by service personnel. The larger magnetic pull force of the portable magnet slidably displaces the smaller magnetic latch pin, freeing the locking tab to permit pivotal opening of the access door. Once the stronger magnet is moved away, the smaller magnetic pin, which is attracted magnetically to the clip, will return to it's rest position penetrating the locking tab and locking the control.

Claims19

Dependent claims

An elevator call box for enclosing electrical control components, the call box comprising:

a mounting plate adapted to be secured to a supporting surface proximate an elevator;
an access door coupled to the mounting plate to enclose the box when the door is shut;
a locking tab;
a latching assembly for locking said door in the closed position and allowing the door to be selectively opened, the latching assembly comprising:
a latch block secured within the call box;
a clip adapted to be snap-fitted to the block;
a through bore penetrating said block;
a locking recess defined in said block;
a pin magnet slidably disposed within said through bore, the pin magnet adapted to penetrate said locking recess;
wherein said locking tab enters said locking recess when said access door is closed;
wherein said pin magnet is normally yieldably magnetically attracted to said clip to engage said locking tab when the door is closed;
and,
wherein the pin magnet can be displaced magnetically away from said clip to release said tab for opening said door.

10 more elements

An elevator call box for enclosing electrical control components, the call box comprising:

a mounting plate adapted to be secured to a supporting surface proximate an elevator, the mounting plate comprising an outwardly projecting locking tab;
an access door hinged to the mounting plate to enclose the box interior when the door is shut;
a latching assembly mounted on said door for locking said door in the closed position and allowing to be selectively opened, the latching assembly comprising:
a non-magnetic latch block secured within the call box;
a clip adapted to be snap-fitted to the block;
a through bore penetrating said block that is generally perpendicular to the clip;
a locking recess defined in said block that is generally perpendicular to said through bore;
a pin magnet slidably disposed within said through bore, the pin magnet adapted to penetrate said locking recess;
wherein said locking tab enters said locking recess when said access door is closed;
wherein said pin magnet is normally yieldably magnetically attracted to said clip to engage said locking tab when the door is closed;
and,
wherein the pin magnet can be displaced magnetically away from said clip to release said tab for opening said door.

9 more elements

A latching assembly for elevator control boxes comprising an enclosure with a mounting plate adapted to be secured to a supporting surface proximate an elevator and an access door hinged to the mounting plate, at least one of said mounting plate and said door comprising a projecting locking tab, the latching assembly comprising:

a latch block adapted to be secured within the call box;
a clip adapted to be snap-fitted to the latch block;
a through bore penetrating said block;
a locking recess defined in said block that is generally perpendicular to said through bore;
a pin magnet slidably disposed within said through bore, the pin magnet adapted to penetrate said locking recess;
wherein said locking tab enters said locking recess when said access door is closed;
wherein said pin magnet is normally yieldably magnetically attracted to said clip to engage said locking tab when the door is closed;
and,
wherein the pin magnet can be displaced magnetically away from said clip to release said tab for opening said door.

6 more elements

Dependencies are inferred from the claim text.

Elevator Fixture Magnetic Slide Latch and Control Box Equipped Therewith

Life of this patent

Elevator Fixture Magnetic Slide Latch and Control Box Equipped Therewith

Life of this patent

Abstract

Claims19