JPS6016196Y2 - door locking device - Google Patents

Description

[Detailed description of the invention] This invention is a door that can be easily unlocked and does not interfere with the opening and closing of the door body even if the outer frame of the door is deformed along with the wall of the building due to earthquakes, etc. The present invention relates to a lock device.

Entrance doors for high-rise residential buildings are generally installed on non-structural walls, and if the wall itself becomes severely deformed or cracks due to external forces such as an earthquake, no matter how strong the door frame is made, it will fail. It is difficult to prevent deformation.

If the outer frame of the door is deformed to a certain degree, the outer frame and the door body will be pressed together, making it impossible to unlock the lock.
It becomes impossible to open the door, making it impossible to evacuate in the event of a disaster.

In view of the above-mentioned circumstances, this invention has been designed to prevent the door frame from deforming due to earthquakes, etc., and in the event that the door frame and the door body are pressed together and the unlocking operation becomes impossible. A force in the opening direction is applied to the latch receiving member, and the locking member of the latch receiving member is sheared, and the door body can be easily and reliably opened while the latch on the door main body side remains engaged with the latch receiving member, Therefore, it is an object of the present invention to provide a door locking device that can ensure safety without interfering with evacuation activities in the event of an earthquake or the like.

To explain the structure of the present invention with reference to an embodiment shown in the drawings, 1 is a door outer frame, 2 is a door body, and the door frame 1 has a bulge 3 on the closing side of the door body 2. are integrally formed.

A surface lock 4 is attached to the back side of the door body 2 at a portion facing the bulge 3 of the door frame 1, and 5 is a latch thereof.

The bulging portion 3 of the door frame 1 is formed with a notch 6 extending from the opposing surface to the outer surface at a portion corresponding to the surface lock 4. A latch receiving member 7 shaped to close the notched portion is attached, and the latch receiving member 7 is fixed to the bulge portion 3 with a fastener such as a screw 8.

This screw 8 continues to maintain its fixing ability under a normal load range, but is sheared when subjected to an abnormally excessive load, and is made of a soft material such as copper or aluminum.

9 is a latch locking hole drilled in the latch receiving member 7.

10 is a handle of the door body 2, and the handle 10
This allows the surface lock 4 to be unlocked from the outside.

The lock attachment side end surface 11 of the door body 2 is a sloped surface facing away from the pivot point of the door body 2 from the inside to the outside, and the corresponding end surface 12 of the door frame 1 is also sloped in the same direction along the same direction. It is formed on an inclined surface.

In a structure like the one above, under normal conditions, the door body 2
When the lock is closed, the latch 5 of the lock engages with the latch locking hole 9 of the latch receiving member 7, thereby locking the lock.

By the way, when the door frame 1 is deformed due to an earthquake or the like and the door frame 1 strongly presses against the surface of the door body 2, a force in the P direction is applied to the lock attachment side end face 11 of the door body 2. As the door body 2 acts, it tries to push the door body 2 outward.

Then, if the force trying to push open the door body 2 is large,
Since the screw 8 that secures the latch receiving member 7 is sheared, even if the surface-mounted lock 4 cannot be unlocked, the door body 2 can be attached to the latch receiving member 7 with the surface-mounted lock. The latch 5 of 4 can be reliably opened while being locked.

In addition, when repairing, the latch receiving member 7 can be reused by removing the sheared screw 8, returning the latch receiving member 7 to its original position, and fixing it with a new screw 8. .

In short, the present invention consists of a door outer frame 1 and a door body 2, and the door outer frame 1 is integrally formed with a bulge 3 corresponding to the closing side of the door body 2. A surface lock 4 is attached to a portion of the bulge 3 facing the surface lock 4 on the back side of the door frame 1, and a surface lock 4 is attached to a portion of the bulge 3 facing the surface lock 4 in the front direction of the bulge. The removable latch receiving member 7 is fixed with a tightening tool 8 such as a screw that shears under excessive load, and the lock mounting side end surface 11 of the door body 2 is turned from the inside to the outside and is further away from the pivot point of the door body 2. An inclined surface 1 in the direction of
2 are inclined surfaces in the same direction, so in the unlikely event that the door frame 1 is deformed due to an earthquake or the like, and the door frame 1 and the door body 2 are pressed together and the unlocking operation becomes impossible. , applies a force in the opening direction to the door body 2, and by this action shears the fasteners 8 such as screws of the latch receiving member 7, and closes the door while the latch 5 on the door body 2 side remains engaged with the latch receiving member 7. The main body 2 can be opened easily and reliably, so that evacuation action in the event of an earthquake or the like is not hindered, and safety can be ensured.

[Brief explanation of the drawing]

The drawings show an embodiment of the door locking device according to the present invention, in which FIG. 1 is a cross-sectional view of the main parts in a normal state, FIG. 2 is a cross-sectional view of the main parts in an abnormal state, and FIG. Figure 3 is a partial perspective view. In the drawings, 1 is the door frame, 2 is the door body, 3 is the bulge, 4 is the surface lock, 5 is the latch, 6 is the notch, 7 is the latch receiving member, 8 is the tightening device such as a screw, 9 is a latch locking hole, 10 is a handle, 11 is an end face of the door body 2 on the lock attachment side, and 12 is an end face of the door frame 1 corresponding to the end face.

Claims (1)

[Scope of utility model registration request] In a door that is composed of a door outer frame 1 and a door body 2, and the door outer frame 1 is integrally formed with a bulge 3 corresponding to the closing side of the door body 2, the door outer frame is formed on the back side of the door body 2. A surface-mounted lock 4 is attached to a portion of the bulge 3 facing the surface-mounted lock 4, and a latch receptacle that is detachable toward the front surface of the bulge 3 is attached to a portion of the bulge 3 that faces the surface-mounted lock 4. The member 7 is fixed with a fastener 8 such as a screw that shears under excessive load, and the lock mounting side end surface 11 of the door body 2 is inclined from the inside to the outside in a direction away from the pivot point of the door body 2. A door lock device characterized in that the corresponding end face 12 of the door frame 1 is inclined in the same direction.