JP3482438B2 - Door opening and closing device in case of earthquake - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock mechanism and a lock mechanism for automatically closing and locking a door body provided in a storage such as a closet when the door body naturally opens due to a shake due to an earthquake or the like. The present invention relates to a door opening / closing device that pushes up and unlocks the locked mechanism.

[0002]

2. Description of the Related Art Conventionally, doors for opening and closing storages such as cabinets are
One end of the door is hinged to the open / close part of the storage with a hinge, and a spring that acts in the closing direction is installed on this hinge side to automatically close by the action of the spring, A structure is generally used in which a stop piece is provided, a clip metal fitting is attached to the storage case side so as to correspond to the lock piece, and when the door body is closed, the clip metal piece is caught and locked by the clip metal fitting.

[0003]

In the general closing structure described above, the former uses a spring, which is inconvenient because the assembly is troublesome. In addition, there is a problem that it is easy to break down and lacks in durability. Further, in the latter case, if used for a long time, the clip metal fitting becomes fatigued, and the clip does not function, so that it cannot be locked.

[0004]

In order to solve this problem, the present invention has been made in view of the above circumstances, and in order to solve this problem, a lock that moves up and down and appears in and out of a box mounted on a top plate near the opening of a storage case. A rod and a partition plate with a window hole provide two chambers at the top and bottom, and each of these chambers accommodates a rolling sphere.
The sphere of the lower chamber is disengaged from the flange provided on the rod rod, and the sphere of the upper chamber is provided on the flange of the lower chamber,
A lock mechanism for actuating the flange through a plurality of blade pieces that are made to look into the upper chamber through the window of the partition plate;
Corresponding to the lock mechanism of the storage case, the base end is attached to the inside of the door of the storage case, and the tip end is provided with a frame body with the inclined surface and the inside being the locking portion, and further in the middle part of the frame body. Is a guide plate that is moved by being guided by both side plates and has a magnet body that attracts the tip of the lock rod embedded therein and that is pushed up to push up the lock rod. provided receiving plate which receives the horizontal direction of the lock rod, collision than the Napishtim body
The lock rod that has come out is locked by the locking portion of the frame body to restrict the movement of the door body in the opening direction, and with the movement of the door body in the closing direction.
The lock rod is pushed to the case side by the magnet body of the push-up plate.
Provided is a door body opening / closing device which is returned to release the lock of the door body.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, a door body which is provided in a storage cabinet such as a cupboard and is opened / closed is naturally opened by a shake such as an earthquake.

Therefore, an embodiment of a door opening / closing device for automatically locking and closing this opening and further unlocking by opening the locked locking rod in the locked state will be described with reference to the drawings. To do.

Reference numeral 1 denotes a storage cabinet such as a cabinet having a door body 2 which is pivotably supported at an opening 3 in the front surface thereof, and can be retracted into a top plate 1a in the storage cabinet 1 in the vicinity of the opening 3. A lock mechanism A having a lock rod 4 is attached.

Further, a frame body is attached to the inner surface of the door body 2 so as to correspond to the lock mechanism A and has a locking portion for locking the lock rod 4 from the lock mechanism A. There is.

The lock mechanism A is mounted on the ceiling 1a near the opening 3 in the storage case 1 as described above.
a ring-shaped casing 5 provided with a, a lock rod 4 protruding and retracted from the casing 5 and a spherical body 6 for receiving a flange 4a provided on the lock rod 4, and a bottom plate 5b inside the casing 5. Has a guide hole 5c for guiding the lock rod 4 in the center, and a bottom plate 5
An inclined surface c is provided so that the inner surface of b is slightly inclined toward the guide hole 5c and the spherical body 6 housed inside is easily rolled toward the center.

A guide hole 5d for guiding the lock rod 4 is provided in an upper portion of the casing 5 corresponding to the guide hole 5c in a guide 5e protruding downward from the mounting piece 5a. A window hole 8 is provided in a substantially central portion of the box body 5, and two horizontal chambers a and b are provided by a horizontal partition plate 7. Inside the upper chamber a, a rollable spherical body 9 and A plurality of blade pieces 10 and 10 provided on the flange 4a of the rod rod 4 are positioned through the window hole 8, and the spherical body 6 is housed in the lower chamber b.
When the sphere 9 housed in the upper chamber a rolls on the partition plate due to a lateral vibration such as an earthquake, the sphere 9 strikes the blade pieces 10 and 10 which are made to look through the window hole 8 in the upper chamber a, thereby lowering the sphere 9. Rotation is transmitted to the flange 4a of the lot rod 4 located in the chamber b, and the flange 4a is removed from the sphere 6 that has received the flange 4a.
This rod rod 4 is dropped by its own weight.

At this time, the rod rod 4 is dropped onto a horizontal receiving plate 14 which will be described later and has the base end attached to the inner surface of the door body 2 and is extended, and when the door body 2 tries to open, the frame body 11 is opened. Locking part 1
It cannot be opened because it is locked by 1b and blocked.

The frame body 11 is attached to the door body 2 so as to extend inward so as to be located at a lower position corresponding to the lock mechanism A as described above.

The frame 11 is formed with an inclined surface 11a on the tip side, and the inside of the inclined surface 11a is formed into a locking portion 11b.

Further, a push-up plate 12 is provided at an intermediate portion of the frame 11 so as to be freely movable by being guided by guide grooves 11c and 11c provided on both side plates 11d and 11d of the frame 11. The push-up plate 12 is slidably fitted in the guide grooves 11c and 11c so as to be inclined substantially parallel to the inclined surface 11a.
Moreover, the lock rod 4 is attached to the push-up plate 12 by a housing 5.
It is designed to be pushed up inside, and a magnet body 13 for adsorbing and locking the end of the lock rod 4 at the time of pushing up is embedded. When the lock rod 4 is pushed up, the magnet rod 13 moves from the lock rod 4 to the magnet body 13.
When they are separated, the push-up plate 12 is guided by the guide groove 11 by its own weight.
It is configured to descend along c and 11c.

Further, the frame body 11 is provided with the horizontal receiving plate 14 at a lower portion slightly away from the upper edge side so that when the door body 2 is closed, the lock rod 4 is received and the door body 2 is opened. At this time, the lock rod 14 on the receiving plate 14 is guided along the receiving plate 14 and is received by the locking portion 11b.

The inclined surface 11a on the front end side of the frame body 11 is a safety means when the lock rod 4 is dropped when the door body 2 is opened. When the door body 2 is closed, the inclined surface 11a pushes the lock rod 4. When it goes over the rising slope 11a, it is locked by the locking portion 11b. Further, in order to release the locked door body 2, the door body 2 is pushed inward as described above, and the locking rod 4 that has fallen is the magnet body 13 embedded in the push-up plate 12.
The push-up plate 12 is moved in the push-up direction along the guide grooves 11c, 11c that are attracted to and gradually inclined, and the push-up plate 12 is moved up with the rod rod 4 and is raised below the flange 4a provided on the rod rod 4 to receive the housing 5 When the sphere 6 in the lower chamber b of the magnet is pushed up so as to be positioned and received, the magnet body 1 embedded in the push-up plate 12
3 is separated from the rod rod 4, and the push-up plate 12 falls by its own weight. In this state, the door is unlocked and can be opened and closed freely.

[0017]

As described above, according to the present invention, two chambers are provided in the housing of the lock mechanism, and the spheres are rollably provided in the respective chambers. In addition, vertical movement is sensitive in the lower chamber, and by using both together, the door can be securely locked against swinging to prevent it from opening, and when the closed state is released, the lock rod is pushed up. Since the plate is provided with a magnet body, it is pushed up surely, and the lock rod is locked by the spherical body, so that the operation is simple and there is no trouble.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a lock mechanism.

FIG. 2 is a partially cutaway plan view of FIG.

FIG. 3 is a plan view of a frame body having a locking portion and a lifting mechanism.

FIG. 4 is a vertical sectional view taken along line XX of FIG.

5 is a cross-sectional view taken along the line YY of FIG.

[Fig. 6] Fig. 6 is an operation diagram of the door provided in the storage case during an earthquake.
Is a door body locked state, B is a state in which the lock rod is pushed up, C
FIG. 4 is a state diagram in which a door can be opened.

[Explanation of symbols]

1 storage 1a Top plate 2 door body 3 openings 4 lock rod 4a flange 5 box 5a Mounting piece 5b bottom plate 5c guide hole 5d guide hole 5e derivative 6,9 sphere 7 dividers 8 window holes 10 feather pieces 11 frame 11a inclined surface 11b Locking part 11c Guide groove 11d side plate 11e Guide groove 12 push-up plate 13 Magnet 14 Receiving plate A lock mechanism Room a, b c inclined surface

Claims (2)

(57) [Claims] 1. A lock rod provided with a sphere that rolls due to vibration and a flange that moves up and down in the box inside a box provided on the top plate of the storage, and rolls the flange. In a lock mechanism for engaging and disengaging the locking rod with the spherical body, the frame formed by forming a slanted surface on the inner side of the opening and closing door body of the storage and a locking portion on the inner side thereof in correspondence with the lock mechanism. The base end of the body is attached and provided, and a magnet body for adsorbing the tip end of the lock rod is embedded in the middle portion of the frame body, and both sides of the frame body are tilted in the direction of pushing up the lock rod. A lock rod push-up plate that can move freely along the lock rod is provided, and a horizontal support plate that receives the lock rod when the lock rod falls is provided at the rear of the push-up plate and protrudes from the housing .
The locking rod is locked by the locking part of the frame to open the door.
Is restricted, and it is pushed up as the door moves in the closing direction.
A door opening / closing device at the time of an earthquake, characterized in that the locking rod is pushed back to the box side by the magnet body of the plate to unlock the door body. 2. A lock rod provided on a top plate near the opening / closing part of the storage compartment, which has a flange in the middle part to move up and down and to be retracted, and a partition plate having a window hole to divide the inside into two chambers. In addition, a box containing a sphere is provided in each of the chambers, and in the lower chamber, a sphere is formed by forming a guide hole for guiding the lock rod and an inclined surface inclined toward the guide hole in the bottom plate. Is stored so that it can be rolled.
Providing a plurality of blade pieces that can be seen through the window in the upper chamber,
By rotating the sphere stored in the upper chamber, the flange was rotated through the blade pieces, the flange was disengaged from the sphere in the lower chamber, the lock rod was projected and retracted, and it was locked by the locking part on the door side. A door opening / closing device that features things.