JPS6133184Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a lock structure suitable for use on the inner door of a safe.

Generally, the inner door of a safe is formed in the shape of an expanding door, and in order to use the safe room as widely as possible, it is a sliding door. The entire safe can be opened, and the inner door is equipped with a double-sided lock that has lock holes on both sides, so that the safe can be locked and unlocked by inserting a key from inside or outside.

However, in the case of an inner door for a vault equipped with such a double-sided lock, the lock casing of the double-sided lock is relatively thick, so even if the entire inner door is made thin, a part of the lock casing may protrude. Eventually, when the inner door was opened and pulled into the door pocket, the protruding part of the lock got stuck on the opening edge of the door pocket, making it impossible to completely open the entrance to the vault, resulting in a narrower effective opening, especially for large There was a problem in that it was inconvenient to carry items into and out of the vault. In addition, in order to make the lock casing thinner, we are considering using a single-sided lock instead of the double-sided lock mentioned above, and widening the grid spacing near the lock so that the lock can be operated by reaching out from inside beyond this spacing. However, this makes lock operation extremely difficult.

This idea was devised by focusing on the above-mentioned problem. A cylinder lock is fixed to the doorstop of the opening that constitutes the entrance to the vault so that the keyhole is exposed. A locking piece is provided that is rotated by the inner door to protrude and retract from the opening surface, and a through hole is provided in the vertical stile that constitutes the frame of the inner door at a position opposite to the cylinder lock, and also opposite to the locking piece. The above-mentioned problem can be solved by providing an engaging part at the position, inserting the key through the through hole, operating the cylinder lock, engaging the locking piece with the engaging part, and locking the inner door. The purpose is to solve the problem.

The present invention will be explained below based on the drawings.

Figure 1 shows the entirety of the inner door installed inside the vault when the door is opened.Inner door 2 installed inside (rear) of the vault 1 Frame 3
a, 3b and upper and lower horizontal stiles 4a, 4b, and between the vertical stiles 3a, 3b, a plurality of horizontal stiles 5, 5, etc. are strung horizontally at appropriate intervals to form a grid. It is formed. This inner door 2 slides laterally along rails (not shown) provided on the upper and lower opening surfaces that constitute the entrance/exit of the vault, and slides laterally along rails (not shown) provided on the side of the entrance/exit of the vault. ) is configured to be drawn in.

FIG. 2 is an enlarged cross-sectional view of part A in FIG. 1 showing an embodiment of the present invention, and a cylinder lock 7 is installed in the doorstop 6a of the opening surface 6 constituting the entrance/exit of the vault. As shown in the figure, the cylinder lock 7 is fixed with the keyhole 8 facing in the sliding direction of the inner door 2, that is, toward the door compartment, and the end of the cylinder lock 7 on the keyhole 8 side protrudes from the opening surface 6 as shown in the figure. ing. The inner end of the cylinder lock 7 protrudes into a case 9 fixed to the inside of the doorstop 6a, and a pinion 10 is inserted into the case 9.
is fixed thereto, and a rack 11 that engages with the pinion 10 is disposed within the case 9 so as to be movable in the vertical direction, and a locking piece 12 is rotatably attached by a pin 13. ing. The tip of this locking piece 12 is connected to the doorstop part 6 of the opening surface 6.
a and the long hole 14 continuously formed in the case 9.
It is designed so that it can protrude outward. Also,
A long groove 15 is formed in the locking piece 12,
An engaging pin 16 fixed to the upper end of the rack 11 is engaged with the long groove 15, so that the locking piece 12 is rotated as the rack 11 moves up and down.

On the other hand, a through hole 17 through which the cylinder lock 7 can be inserted is formed in the vertical stile 3a of the inner door 2 that contacts the door stop 6a at a position opposite to the cylinder lock 7 in the left-right direction of the inner door 2. and facing the elongated hole 14 from which the tip of the locking piece 12 projects,
An engagement hole 1 constituting an engagement part is provided on the outer surface of the vertical stile 3a.
8 is formed.

Next, the operation of the above configuration will be explained.

When the inner door 2 is slid to the left and closed, the outer surface of the vertical stile 3a comes into contact with the door stop 6a. At this time, the cylinder lock 7 protruding from the doorstop 6a enters the through hole 17 of the vertical stile 3a,
The keyhole surface 17a is exposed from the inner surface of the vertical stile 3a. Therefore, the key 1 is inserted into the cylinder lock 7 from this keyhole 8.
9 and rotates the cylinder lock 7, the pinion 10 at the inner end rotates and locks the rack 1.
1 is raised, the engagement pin 16 slides along the long groove 15 of the locking piece 12, and the locking piece 12 is rotated in the direction of arrow A. Then, the tip of the locking piece 12 projects outward from the elongated hole 14 of the opening surface 6, and the locking hole of the vertical stile 3a goes inward, so that the vertical stile 3 is closed as shown in FIG.
a, and the inner door 2 is locked by the locking piece 12 and cannot slide. In other words, it is locked. Next, when the key 19 inserted into the cylinder lock 7 is turned in the opposite direction, the pinion 1
0, the rack 11 is lowered, the locking piece 12 is rotated, and the tip is disengaged from the engagement hole 18 of the vertical stile 3a, retreats into the case 9 inside the opening surface 6, and closes the inner door 2.
is unlocked.

In addition, in the above embodiment, the cylinder lock 7 was fixed to protrude from the opening surface 6, but the cylinder lock 7 is fixed to the inside of the doorstop part 6a so that the keyhole surface 7a is the same as the opening surface 6. In addition, a through hole 17 may be formed in the vertical stile 3a at a position facing the cylinder lock 7, through which a key 19 can be inserted and rotated.

As explained above, this invention is based on the idea that a cylinder lock is fixed on the doorstop of the opening surface that constitutes the entrance to the vault so that at least the keyhole surface is exposed from the opening surface, and the cylinder lock is installed on the vertical stile of the inner door. Since the through hole is formed in a position opposite to the inner door, there is no need to provide a lock on the inner door, and there is no risk of the inner door getting caught on the opening edge of the door pocket when the inner door is pulled into the door pocket. The inner door can be pulled in one piece, and the keyhole faces the sliding direction of the inner door, making it easy to lock and unlock from inside and outside the vault. The lock can be placed at any position (height). In addition, conventional inner doors equipped with double-sided locks required a strip in the center of the inner door to attach the lock, but in this invention, a cylinder lock is provided on the opening surface of the vault entrance. Since the inner door does not require a central band plate, the overall configuration is simplified, and the left and right structures are almost the same, so the design and production are simplified and the cost is reduced.

[Brief explanation of drawings]

Fig. 1 is a front view showing the vault door in an open state, Fig. 2 is a cross-sectional front view of main parts showing an example of the locking structure of the inner door according to the present invention, and Fig. 3 is a front view of the interior door to which the present invention is applied. FIG. 3 is a perspective view of the main parts showing a state in which the door is slightly opened. 1... Vault, 2... Inner door, 3a, 3b... Vertical stile, 6... Opening surface, 6a... Doorstop, 7... Cylinder lock, 8... Keyhole, 10... Pinion, 11
... Rack, 12 ... Locking piece, 17 ... Through hole,
18...Engagement part (engagement hole), 19...Key.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In an inner door that is arranged in a sliding manner on the inside of the safe door of a safe, at least a keyhole is provided in the doorstop of the opening surface that constitutes the entrance and exit of the safe. A cylinder lock is fixedly installed so as to be exposed, and a locking piece that can freely come out and retract from the opening surface and an operating mechanism that moves this locking piece by operating the cylinder lock are provided, and a vertical lock of the inner door is provided. A lock structure for an inner door in a safe, characterized in that the stile is provided with a through hole at a position facing the cylinder lock, and an engaging part at a position facing the locking piece. (2) The operating mechanism of the locking piece is comprised of a pinion rotated by the cylinder lock, and a rack that meshes with the pinion and is locked to the locking piece. A locking structure for an inner door in a safe as set forth in claim 1 of the utility model registration claim.