JPH0111897Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention mainly relates to an earthquake-resistant latch mechanism for a filing cabinet, and is an improvement of Utility Model Registration Application No. 190910 filed in 1982 by the same applicant.

In conventional filing cabinets,
The drawer is designed to be pulled out freely unless it is locked with a lock, and even if there was a latch mechanism, it would be difficult to pull it out by pressing your finger into the operating plate provided inside the handle. It is designed to release the latch mechanism in connection with the drawer, and is applicable only to large drawers, for example, in a cabinet equipped with a large number of multi-stage flat drawers for storing drawings and maps. are difficult to install, and because these conventional devices are activated by extremely light pressure, the locking is often useless in the event of an earthquake with small or large vibrations. There was a risk that the drawer would often fall off by itself, especially due to vibrations during transportation.

For this reason, when the drawer is stored, the drawer is automatically locked in the stored position, and when it is pulled out, the latch mechanism is released with one hand while the drawer is pulled out with the other hand.

However, in areas with few earthquakes where the cabinet is rarely subjected to vibrations other than during transportation, the drawer operation becomes complicated, and a latch mechanism is required except in cases where artificial vibrations occur such as during transportation. It will not be possible to do so.

The present invention is designed to appropriately deal with the above-mentioned situations.In order to release the latch mechanism, a lock is provided to lock the push button in the pushed-in position, and the latch mechanism can be activated at any time as needed. The gist of the present invention will be explained below based on the embodiment shown in the drawings.

The drawing shows an embodiment of a cabinet equipped with the latch mechanism of the present invention. Reference numeral 1 denotes a cabinet housing, which accommodates flat drawers 2 in several stages.

The drawer 2 has a storage section 2a divided into two parts on the inside as shown in the second figure, the front plate 2b has a bent upper edge to form a handle 2c, and the rear plate 2d has a drawer 2a as shown in the third figure. The latch hook 3 is fixed as shown.

As is clear from FIG. 5, the latch hook 3 is
The tip is bent doubly to form a locking part 3a and an inclined part 3b, and a drawer mounting step part 3c is provided.

4 is a push button, which also serves as a cylinder lock in this example,
As shown in the first figure, it is located at the center of the upper front of the housing 1.

The push button 4 is held in a guide frame 5 integrally fixed to the housing 1 so as to be slidable along a guide slot 5a thereof.

Reference numeral 6 denotes an operating rod, whose tip 6a is connected to the rear end of the push button 4, and is fixed with a screw 17 that loosely fits into the guide slot 5a.The rear end 6b has an inclined portion 6c directed diagonally upward. , is loosely fitted into the guide hole 7a of the top plate reinforcing frame 7, and is pressed by the spring 8 in the direction of the arrow in the figure.

Reference numeral 9 denotes a vertically elongated key board, which has a square cross section, and a key board guide frame 1 with a U-shaped cross section fixed to the rear plate 1a of the housing 1.
A plurality of cut and raised pieces 10a cut and raised symmetrically from the key board guide frame 10 allow the key board 9 to be slid freely in its longitudinal direction. Movement is regulated.

Further, the upper end 9a of the key board 9 is bent into a square shape, and a through hole 9b is bored therein, and the tip of the operating rod 6 is passed through the through hole 9b, while the spring 11 is used to hold the operating rod 6.
The key plate 9 is pushed down through the key plate 9 to lock the latch fitting 3.

Reference numeral 12 denotes a locking hole that is provided opposite the latch hook 3 of each drawer 2, 2, so that the tip of the latch hook 3 can be freely inserted therein, and in the normal case as shown in the fifth figure. Since the locking portion 3a of the latch hanger 3 occupies a position beyond the upper edge of the locking hole 12, the drawer 2 is prevented from falling out.

13 is a reinforcing frame provided with a vertically elongated guide hole 13a for guiding the tip 6b of the operating rod 6.

As shown in FIG. 6, the push button 4 which also functions as a cylinder lock has a keyhole 4a at its front end, and when the key is inserted and rotated, a dead bolt 4b protrudes laterally to lock the cylinder. The locking holes 14 and 15 facing the dead bolt 4b are located in the side wall 5b of the guide frame 5.
The locking hole 14 is for locking when the push button 4 is protruding outward, that is, when the drawer 2 is locked by the latch mechanism. The locking hole 15 is a locking hole into which the dead bolt 4b is inserted when the push button 4 is pushed in, that is, the latch mechanism is released.In this case, the latch mechanism is restrained in the released state. There is.

Therefore, the cabinet can be locked in the conventional manner by locking the push button 4, which has a tendency to protrude, in the protruding state.

Next, in normal use, if the latch mechanism is not required for earthquake resistance, by locking the push button 4 with the locking hole 15 in the pushed-in state, the latch mechanism is suppressed to the inoperative state. The drawer 2 can be freely operated with one hand.

As mentioned above, the latch mechanism of the present invention is equipped with a lock that releases the latch mechanism by lifting the key board by pressing the push button and lifting its tip, and locking the push button in this state. In areas where there are almost no earthquakes, it is possible to use the drawer with the latch released, and if necessary, for example during transportation, by releasing the lock and operating the latch mechanism freely, the drawer will not fall off. It is possible to prevent this, making it extremely suitable as a latch mechanism for use in earthquake-free areas.

In this embodiment, a cylinder lock that also serves as a push button is used as the lock, but it goes without saying that the lock may be provided separately from the push button so that the push button can be locked in two stages.

[Brief explanation of the drawing]

Fig. 1 shows an embodiment of the mechanism of the present invention; Fig. 2 is a perspective view of a cabinet for storing drawings, maps, etc.; Fig. 2 is a perspective view of the drawer itself; and Fig. 3 shows the structure protruding from the rear end of the drawer. FIG. 4 is a partially cutaway perspective view showing the latch hanging device in a locked state; FIG. FIG. 6 is an exploded perspective view of the cylinder lock/push button portion. 1-cabinet housing, 2-drawer, 3-latch hook, 4-push button, 4a-keyhole, 4b-dead bolt, 5-guide frame, 6-operating rod, 9-key plate, 14,
15~locking hole.

Claims (1)

[Scope of utility model registration request] An operating rod whose tip is raised by pressing a push button having a tendency to protrude, and a key connected to the operating rod, facing a latch of a drawer, and having elasticity in a direction to lock the latch. a plate and a lock for locking the push button in the pushed-in position, the latch of the drawer being locked in the protruding position of the push button, and the latch of the drawer being released in the pushed-in position of the push button; Earthquake resistant latch mechanism in a sealed filing cabinet.