IL198472A - Safety and protected door - Google Patents

Description

198472/02 Handle Mechanism for Fire Door 198472/02 Description TECHNICAL FIELD The present invention refers to a door handle mechanism.

BACKGROUND Fire door handles are customarily composed of a horizontal bar that spans across the width of the door and serves as a handle. When the handle is pushed towards the door, the door opens outward (such handles are customarily referred to as fire door push bars or emergency push bars). Emergency push bars are designed to enable the user to open the door by pushing the bar towards the door when the door is designed to open outward, and vice versa, and they are essential mainly in times of emergency and panic. Regular doors with standard handles, such as residential entrance doors, are opened by pushing the handle downward, a direction of action that is not very suitable in emergency situations. In addition, bar handles that extend the entire width of the door, such as those used on fire doors, are not used on residential doors for aesthetic reasons. The present invention solves both of these problems by presenting a mechanism that, on the one hand, is designed for use on a handle that looks like a regular, standard handle of a residential entrance door (as opposed to a fire door push bar) and, on the other hand, enables the user to open the door by pushing the handle outward (as opposed to downward) when the door opens outward (or by pulling the handle inward when the door opens inward). Thus, the handle functions also as an emergency door handle. 198472/02 THE DRAWINGS Drawing No. 1 depicts the plate that covers the door's locking mechanism (hereinafter referred to as "the door lock cover plate" or "the plate") including the center shaft (100), the shaft (101) and the pin (102) used to release the locking of the lock.

Drawing No. 2 depicts the plate and the main base (2).

Drawing No. 3 depicts the butterfly device.

Drawing No. 4 depicts the main base (2), the butterfly device (3), the vertical lever (5) and the shaft (61).

Drawing No. 5 depicts the main lever (4).

Drawing No. 6 depicts the main base (2), the butterfly device (3), the main lever (4), the vertical lever (5), and the shaft (61).

Drawing No. 7 depicts the vertical lever (5).

Drawing No. 8 depicts the mechanism (1) and its components whereby the handle is in rest position.

Drawing No. 9 depicts the mechanism (1) and its components whereby the handle is pulled up/outward.

Drawings Nos. 10 and 11 depict the mechanism (1) and its components. 198472/02 THE INVENTION The present invention is implemented on a door that when slammed, causes the lock bolts to slide into the lintel and lock, and that is equipped with a knob that when turned, retracts the bolts from the lintel, enabling the door to open (hereinafter referred to as the "door"). The present invention refers to the handle mechanism of the said door.

The present invention refers to the handle mechanism of the door, whereby pulling the handle causes the bolt locking mechanism and the tongue to be retracted from the lintel, enabling the door to open. The present invention also refers to cases in which the door opens outward; in such cases pushing the handle outward causes the door to open. The explanations and drawings attached to the application refer to a door that opens inward and therefore the handle must be pulled inward, although the invention and application cover also the opposite case. 198472/02 First, we present a general description of the door's locking mechanism prior to the addition of the mechanism, subject of the invention. Drawing No. 1 depicts the cover of the door's locking mechanism. A central, square axis (100) protrudes from the cover, to which the handle normally attaches, i.e. when the invention is not implemented. When the axis (100) is turned, the tongue is retracted into the door (like in any standard door). In addition, Drawing No. 1 depicts an axis (101) that when turned causes the bolts to be retracted from the lintel and the door to open. The axis (101) is designed to be attached to a permanent key (since it is on the inside of the house). The knob that is attached to the axis (101) enables quick opening of the door, as explained above. When the axis (101) is turned, the pin (102) is moved to the right, thus releasing the bolts. [When the door is in normal position, i.e. when the present invention is not implemented, the pin (102) does not protrude from the lock mechanism's cover. Here, the pin (102) has been slightly extended outward for the purposes of implementing the invention, for reasons that will be presented later on in the description.] The main components of the mechanism (1), subject of the invention, are: a main base (2), a "butterfly" device (3), a main lever (4), and a vertical lever (5). 198472/02 The main base (2) is depicted in Drawing No. 2, which is identical to Drawing No. 1 but for the addition and installation of the main base (2) on the door lock cover plate. The main base (2) comprises two perpendicular, trapezoid "wings" (21) (22), whose long base is attached to the body of the lock and whose short side faces away from the door. Each trapezoid wing (21) (22) has a hole (210) (220) in its narrow, upper part.

Drawing No. 3 depicts the butterfly device (3), which has the general shape of a largely hollow elliptical cylinder with a center hole (31). The shape of the center hole (31) is identical or similar to that of the central shaft (100), since the butterfly device is designed to be inserted over the shaft in order to turn it. Drawing No. 4 is identical to Drawing No. 2 but for the addition of the butterfly device (3) and its insertion over the central shaft (100). The butterfly device (3) is inserted over the central shaft (100) in a loose manner, in other words it is not fixed in place. When the butterfly device (3) is turned, the central shaft (100) turns as well.

Drawing No. 5 depicts the main lever (4), which has the general shape of an elongated rectangular plate that is bent 90° into an L shape. The horizontal part (41) of the lever is rectangular and has a hole (42) designed to be inserted over a shaft (61) that is attached to the handle (6) of the door. The vertical part (43) 198472/02 of the lever (4) is also rectangular and has two short fingers (44) (45) that protrude from its inner face and which are parallel to the horizontal part (41) of the lever (4). Drawing No. 6 is identical to Drawing No. 2 but for the addition of the main lever (4) and its insertion over the shaft (61) that is attached to the handle (6). The main lever (4) is inserted over the butterfly device (3) so that when the main lever (4) is turned downward, the fingers (44) (45) cause the butterfly device (3) to turn for quick opening of the door.

Drawing No. 7 depicts the vertical lever (5), which is an elongated plate whose upper part is narrow and whose lower part has two indentations (51), as depicted in Drawing No. 7. The lever (5) also has a hole (52) that serves to attach the lever to the door lock cover plate, as described below. As mentioned, the vertical lever (5) is permanently attached to the door lock cover plate by a screw or pin that is inserted through the hole (52). The vertical lever (5) can, however, rotate about the hole (52) [on the pin or screw], which serves as a rotational axis for the vertical lever (5). Drawings 4 and 6 depict the place and manner in which the vertical lever (5) is installed. The indentations (51) in the vertical lever (5) are inserted over the butterfly device (3), as depicted in Drawing No. 4. When the butterfly turns, it causes the vertical lever (5) to rotate around the axis, i.e. the hole (52), so that the upper part of the vertical lever (5) rotates to the right. In released position, the upper part of the lever (5) 198472/02 barely touches the pin (102); when the vertical lever (5) is turned slightly, it moves the pin (102) to the right, thus releasing the bolts and opening the door.

The handle (6) is attached to the mechanism (1) as follows: The handle (6) has a small horizontal hole (62) at its base, as depicted in Drawing No. 9.

The shaft (61) is inserted through the square hole (42) in the main lever (4), and it too has a small horizontal hole (64), as depicted in Drawing No. 6. The handle (6) is inserted over the shaft (61), as depicted in Drawing No. 8. A horizontal rod (63) is inserted through the holes (210) (220) in the perpendicular wings of the main base (2), the hole (64) in the shaft (61) and the hole (62) in the handle (6).

Thus, when the handle (6) is pulled upward, the main lever (4) rotates about the horizontal rod (63), which constitutes a pivot for the mechanism. When the main lever (4) rotates, it turns the butterfly device (3), which in turn causes two actions: First, it turns the center shaft (100) and retracts the tongue back from the lintel into the door; second, it turns the vertical lever (6) so that its upper part moves the pin (102) to the right, unlocking the bolts. Drawing No. 8 depicts the mechanism with the handle (6) in rest position and Drawing No. 9 depicts it in open position (the handle is pulled up/outward). Drawings Nos. 10 and 11 also depict the mechanism (1).