JPS6236112B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device that can automatically lock furniture doors, drawers, etc. in the event of an earthquake.

Conventionally, in the case of cabinets and other furniture with drawers such as lateral and vertical piles having multiple drawers, there was a risk that the drawers would fly out during an earthquake, causing the center of gravity to shift forward and tipping over. In addition, furniture such as lockers and bookshelves that are equipped with single- or double-opening pivoting doors are at risk of opening during an earthquake and causing stored items such as documents to fly out. Furthermore, the drawers flying out, furniture falling over, doors opening, and contents flying out during such earthquakes could lead to personal injury and were extremely dangerous. One way to prevent furniture from tipping over is to fix the top end of the furniture body to the wall with tipping prevention fittings, etc., but if the furniture is made of steel, the wall is concrete, or the furniture is placed in the middle of the room. In some cases, it is difficult to secure the furniture, and it is not possible to reliably prevent the furniture from falling over.

In view of the above circumstances, the present invention makes it possible to automatically lock doors, drawers, etc. when furniture shakes during an earthquake, etc., thereby reliably preventing furniture from falling over and stored items from scattering. The present invention provides an automatic locking device for furniture drawers, etc., which prevents the locking of furniture.

A feature of the present invention is that a locking portion is provided on the side plate of a drawer or the like that is supported on the furniture body so as to be openable and closable, and a locking piece is provided on the furniture body at a locking position where the locking piece engages with the locking portion, and a locking portion is attached to the locking portion. a holding mechanism for holding the locking piece in the unlocked position on the furniture body; and a holding mechanism for holding the locking piece in the locking mechanism by vibration of the furniture body. A release mechanism that releases the posture and an operating mechanism that displaces the locking piece to the locked position are provided. Under normal conditions, when the furniture is stationary, the locking piece is held in the non-locked position so that drawers etc. can be opened and closed freely. When the furniture shakes, the lock piece is moved to the lock position so that the drawer or the like can be automatically locked. A second feature is that after the lock is locked, the lock piece can be easily returned to the unlocked position via the operating mechanism by operating the lock release operation lever.

Embodiments of the present invention will be described below based on the drawings.

Reference numeral 1 denotes a furniture main body, and the drawing shows a lateral aisle main body, into which several upper and lower drawers 2 are incorporated so that they can be opened and closed (moved in and out) via guide mechanisms such as suspensions (not shown). .

The automatic locking device of the present invention is installed between the side plate 11 of the furniture body 1 and the side plate 21 of each drawer 2 on both the left and right sides (or one side is acceptable) of each drawer 2 as described below.

First, the metal fitting 3 to be locked is fixed to the side plate 21 of the drawer 2. The locking metal fitting 3 is formed to have a substantially Z-shaped cross section, and a plurality of locking portions 31 having a sawtooth shape in the front-rear direction are provided on the lower side thereof. In this embodiment, a lock engagement hole 32 for locking with a key is provided on the back side of the front plate 22 of the drawer 2.

On the other hand, a reinforcing frame 12 (the rear part and the middle part are not shown) is fixed to the side plate 11 of the furniture body 1 at the front, rear, and middle part of the inner surface thereof, and the reinforcing frame 12 at the front part is A vertical rod 14 is supported in the vertical groove 13 so as to be movable up and down, and a locking fitting 4 is fixed to a position of the vertical rod 14 corresponding to each drawer 2 with screws 41 or the like. A lock piece 42 is integrally bent at the rear end of the lock fitting 4 so as to have an L-shaped cross section and protrude inward. Also, in this example,
A hook-shaped lock piece 43 is also provided at the front end of the lock fitting 4.

The vertical rod 14 is connected in a suspended position to an all-lock locking mechanism (not shown) which is operated by a key. The vertical rod 14 and the locking metal fitting 3 are normally held in the neutral non-locking position shown by the solid line in FIG. 4, and in the event of an earthquake, etc., they are displaced to the locking position shown by the dashed line in the same figure via the operating metal fitting 5, etc. Further, the locking mechanism is moved from the neutral unlocked position to a lower locking position by operating the key.

The operating fitting 5 is rotatably supported on the mounting fitting 6 by a pivot 51. The mounting bracket 6 is installed inside the side plate 11 of the furniture main body 1 in a space 15 formed between the front reinforcing frame 12 and the intermediate reinforcing frame (not shown), and is screwed into the reinforcing frame 12. 61 etc., the tip 5 of the operating fitting 5
2 are arranged below the lock piece 42 so as to face each other at an appropriate distance. The operating fitting 5 is biased by a spring 53 so that its tip 52 rotates in a direction that pushes up the locking piece 42 to the locked position. 54 is a spring force adjustment hole. A protruding piece 55 for unlocking is provided protruding near the rear end of the operating fitting 5, and a pin 56 is further attached to the rear end to provide a locking portion. The protruding piece 55 is engaged with an engagement hole 71 provided in the lock release operating lever 7, and the operating lever 7 is supported by the reinforcing frame 12 through a screw 72 and an elongated hole 73 so as to be movable in the front-rear direction. , is provided such that its tip can protrude from the front surface of the side plate 11.

The locking metal fitting 8 has an engaging portion 82 that can be freely engaged with and detached from the locking pin 56 of the operating metal fitting 5, and is rotatably supported on the mounting metal fitting 6 via a pivot 81. A connecting piece 83 and a connecting notch 84 are provided at the rear end of the locking fitting 8.
is provided, and a connecting shaft 91 is engaged with the notch 84. The connecting shaft 91 is supported by support parts 62 and 63 provided at the rear end of the mounting bracket 6 so as to be able to move up and down, and
Due to the large diameter head 92 provided at the upper end of the connecting shaft 91,
An oscillator 9 arranged in an upright position on the support section 62
is supported so that it can swing freely. A weight body 95 is attached to the upper end of the rocker 9 through a screw 93 and an elongated hole 94 so as to be able to change its vertical position. 96 is the engaging portion 82
97 is a washer, and 98 is a snap spring for maintaining the engaged position of the locking pin 56.

Next, the effect will be explained.

First, in normal times, the furniture body 1 is stationary, so the rocker 9 is stationary in an upright position, and the locking fitting 8 is urged by the spring 96 to rotate forward, and the locking fitting 8 is urged to rotate forward by the spring 96. The engaging portion 82 of the metal fitting 8 engages with the locking pin 56 of the actuating metal fitting 5, holding the actuating metal fitting 5 in a substantially horizontal position, and locking the tip 52 of the actuating metal fitting 5 with the locking piece 42.
They are evacuated at an appropriate distance below.

Along with this, the lock pieces 42 and 43 are attached to the vertical rod 14.
The locking fitting 4 is held in a neutral non-locking position by its own weight. Therefore, the locked portion 31 of the drawer 2 can freely pass above the lock piece 42, and the hook-shaped lock piece 43 is inserted into the engagement hole 32.
The drawer 2 can be opened and closed (taken in and taken out) freely without getting caught.

In this unlocked state, the lock release operation lever 7 is retracted to the retreated position, and its tip is almost flush with the front surface of the side plate 11 of the furniture body 1, thereby indicating the unlocked state. It turns out.

Next, when an earthquake occurs, the furniture body 1 shakes, and the mounting bracket 6 integrated with the furniture body 1 also shakes, but the oscillator 9 supported on the bracket 6 is moved by the weight body 95. Due to its existence, it tries to maintain a stationary state of standing posture due to inertia. As a result, the furniture body 1 and the rocker 9 will swing relative to each other,
As the rocker 9 swings, the connecting shaft 91 is pulled upward, the locking metal fitting 8 is rotated rearward, and the engaging portion 82 is disengaged from the locking pin 56. At the same time, the spring 63 causes the operating metal fitting 5 to rotate forward and upward, and the tip 52 of the metal fitting pushes the locking piece 42 up to the locking position. Therefore, even if the drawer 2 tries to open forward due to the earthquake, the front end of the locked portion 31 of the drawer 2 will hit the lock piece 42, making it impossible to open the drawer 2, and the drawer 2 will fly forward. There isn't.

During the operation associated with the above-mentioned earthquake, the lock piece 42 may be pushed up to the lock position after the drawer 2 has opened to some extent due to a timing shift in the operation of each metal fitting.

If there is such a possibility, the distance between the front end of the locked part 31 and the locking piece 42 in the front-rear direction can be increased to some extent in advance to account for the amount of timing deviation. Before passing over the locking piece 42, the locking piece 42 is displaced to the locking position to prevent movement of the locked part 31,
Prevents the drawer from opening. Therefore, the locked part 3
The shape of 1 does not necessarily have to be serrated as shown in the figure, but may be a simple protruding piece.

However, if the shape of the locked part 31 is made into a sawtooth shape as shown in the figure, even if the timing of the above-mentioned operation is shifted, the lock piece 42 can be moved to any one of the locked parts 31.
The drawer 2 can be reliably locked by engaging with the drawer 2, and the opening movement of the drawer 2 can be reliably prevented. Furthermore, once it is locked,
Although the opening movement of the drawer 2 is prevented, it is possible to open the drawer 2, that is, to move it in the storage direction.
The drawer 2 can be gradually stored inward by moving backward while climbing over the lock pieces 42 one by one.

The above-mentioned automatic locking operation is activated in the same manner as described above due to the vibration of the furniture body 1 not only during an earthquake but also when the furniture is being transported.

After the automatic locking, the unlocking operation rod 7 moves forward due to the rotation of the operating metal fitting 5, and its front end protrudes from the front surface of the side plate 11 of the furniture body 1, thereby locking the lock. The condition can be easily checked visually from the outside. Further, by subsequently pushing back the operating rod 7, the operating metal fitting 5 returns to the horizontal position, and the locking pin 56 is engaged with the engaging portion 82 of the locking metal fitting 8, so that the original position can be easily returned. It can be reinstated. In addition, the operating metal fitting 5 can be attached using another appropriate method.
If such a return is possible, the operation lever 7 can be omitted.

When manually locking the lock apart from the above-mentioned operation due to an earthquake, the vertical rod 14 is displaced downward from the neutral unlocked position by activating a locking device (not shown) with a key, and the vertical rod 14 is moved downward from the neutral unlocked position. The hook-shaped lock piece 43 of the lock fitting 4 fixed to the drawer 2 may be engaged with the engagement hole 32 provided in the front plate 22 of the drawer 2. At this time, by attaching locking fittings 4 corresponding to the drawers 2 in several upper and lower stages to the vertical rod 14 and providing the engagement holes 32 in each drawer 2, all the drawers 2 can be locked with one key operation. . Since this key-based all-lock mechanism is not directly related to the gist of the present invention, a detailed explanation thereof will be omitted. In carrying out the present invention, the hook-shaped locking piece 43, the engaging hole 32, and other locking mechanisms may be omitted.

In the above embodiment, the actuating metal fitting 5 and the locking piece 42 are molded separately, but the locking piece 42 may be provided integrally at the tip of the actuating metal fitting 5. However, as shown in the illustration, the operating metal fitting 5 and the locking piece 42 are separated,
If the lock piece 42 is provided on the all-locking vertical rod 14, only one set of actuation mechanisms such as the actuating metal fittings 5 need be provided, and by changing the position of any one lock piece 42 using this set of actuating mechanisms, , vertical rod 1
4, the positions of several other lock pieces (not shown) can be changed to automatically lock all the drawers 2 at once.

In addition, by omitting the locking metal fitting 3 and turning the hook-shaped lock piece 43 upward, the hook-shaped lock piece 43 can be moved into the engagement hole 32 by the operation of the operating metal fitting 5, etc.
The lock may be automatically locked by engaging the lock.

The operating metal fitting 5 is not limited to a rotary type, but may be slidable vertically or in the front-back direction. In the case of a back-and-forth movable type, a cam may be used to move the lock piece 42 up and down. The oscillator 9 may directly connect the weight body 95 to the locking fitting 8.

In addition, the specific structure and interlocking means of each of the above-mentioned members are not limited to the above-mentioned embodiments, and the design can be changed at will. It can also be used as a

As explained above, according to the present invention, in the event of an earthquake, etc., it is possible to automatically lock the doors or drawers of furniture, and prevent the doors from opening and stored items falling out, or the drawers from falling out and causing the furniture to fall. It is possible to reliably prevent this from happening and greatly improve safety. Furthermore, by providing an operating lever for unlocking, the lock can be easily unlocked from the outside after the automatic locking described above, making it extremely easy to use.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of furniture equipped with the device of the present invention, FIG. 2 is a perspective view of the automatic locking mechanism of the same furniture seen from the inside, FIG. The figure is a cross-sectional view taken along the line -- in FIG. 3, and FIG. 5 is a cross-sectional view taken along the line -- in FIG. 1... Furniture body, 2... Drawer, 3... Locking metal fitting, 4... Locking metal fitting, 5... Operating metal fitting, 6...
...Mounting bracket, 7...Lock release operation lever, 8...
Locking metal fitting, 9... Rocker, 11... Side plate of the furniture body, 21... Side plate of the drawer, 22... Front plate of the same, 3
1... Locked part, 32... Lock engagement hole (locked part), 42... Lock piece, 43... Hook-shaped lock piece, 56... Locking part (pin), 63... Spring, 95... Pyramid.

Claims (1)

[Scope of Claims] 1. A locking portion is provided on the side plate of a drawer or the like that is supported on the furniture body so as to be openable and closable, and a locking piece is placed on the furniture body at a locking position where the locking piece engages with the locking portion and when the locking piece is disengaged from the locking portion. a holding mechanism for holding the locking piece in the unlocked position; and a holding mechanism for holding the locking piece in the unlocked position, and a holding posture of the locking piece by the locking mechanism by vibration of the furniture body. An automatic locking device for a furniture drawer or the like, characterized in that it is provided with a release mechanism for releasing the lock and an operating mechanism for displacing the lock piece to the lock position. 2. A locking part is provided on the side plate of a drawer etc. that is supported on the furniture body so as to be openable and closable, and a locking piece is placed on the furniture body in a locked position where it engages with the locked part and in an unlocked position where it is separated from the locked part. a locking mechanism that is provided in a position changeable manner and that holds the lock piece in an unlocked position on the furniture body; a release mechanism that releases the position in which the lock piece is held by the lock mechanism by vibration of the furniture body; An automatic locking device for a drawer or the like of furniture, characterized in that an operating mechanism for displacing a locking piece to a locked position is provided, and an operating lever for unlocking provided on the furniture body is connected to the operating mechanism.