JPH0542212Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a locking device for storage boxes such as mail boxes, coin lockers, and safes.

"Prior Art" An example of this type of locking device is shown in FIG. 8 (an earlier patent application proposed by the applicant).

That is, the above embodiment includes an outer cylinder member 1 and a first engaging body 2 rotatably fitted onto the outer cylinder member 1.
a knob rotating member 3 having a knob rotating member 3;
The outer cylinder member 1 is rotated by a rotation operation of
A second engaging body 4 is installed inside the outer cylinder member, and a second engaging body 4 is installed inside the outer cylindrical member so as to be separated from the plurality of engaging bodies 2 and 4 when the knob rotating member 3 is rotated and converted to an arbitrary password. The latch plate 8 is removably attached to the outer cylindrical member 1, which pivotally supports a plurality of rotors 5 and 6, and a latch plate 8 that is unlocked and locked by engaging and disengaging from the notches 7 of the rotors 5 and 6. This is a locking device consisting of a latch holder 9.

Therefore, when the latch plate 8 pivotally supported by the latch holder 9 is opened when the door 11 is opened when the lock body 10 is in the unlocked state, the engaging portion 8a of the latch plate 8 is formed on the inner wall of the door 11. It engages with the stopper piece 12 and rotates in the direction of arrow A about the latch shaft 13 as a fulcrum against the spring force of the latch spring 14. On the other hand, the latch plate 8 locks the door 11 when the lock body 10 is in the locked state.
When closing, the inclined surface 8b of the latch plate 8 comes into sliding contact with the stopper piece 12 and retreats in the direction of arrow B while being guided by the guide hole 15 of the latch holder 9.

However, in the above configuration, since the latch plate performs two movements: rotation and vertical movement, it is necessary to make the space of the latch holder 9 for storing the latch plate 8 as large as possible.
There was a problem in making the lock body 10 more compact. Particularly when it is desired to cover the guide hole 15 of the latch holder 9 due to the design, it is necessary to attach a cover body to the outer cylinder member 1 in a protruding manner or to increase the thickness of the outer cylinder member 1 itself.

Furthermore, when the lock body 10 is in the locked state, the door 11
When the lock was closed, the latch plate 8 did not move smoothly, which caused the lock body 10 to malfunction.

``Problems to be solved by the present invention'' In view of the above-mentioned shortcomings of the conventional technology, the present invention solves the following problems:
To obtain an inexpensive locking device for a storage box whose lock body can be made as compact as possible and which is less likely to malfunction.

``Means for Solving the Problems'' The storage box locking device of the present invention includes a lock body that is fixed to the door of the storage box and is equipped with a lock latch, and a lock body that is installed on the inner wall of the storage box and that engages and disengages from the lock latch. In a storage box locking device comprising a receiving member, the lock latch is pivotally supported by the lock body so as to only rotate, while the receiving member is supported by a spring on a fitting body fixed to the inner wall of the storage box. It is characterized in that it is a receiving latch that is inserted into the lock body and moves in sliding contact with the lock latch when the door is closed when the lock body is in the locked state.

The receiving member may be a plate spring fixedly provided on the inner wall of the storage box.

"Embodiments of the present invention" The present invention will be described in detail below with reference to embodiments shown in the drawings.

In the embodiment shown in FIGS. 1 to 4,
is a storage box such as a mailbox, coin locker, or safe. Reference numeral 20 denotes a lock body fixed to the open end of the door a of the storage box X, which in this embodiment is a combination lock with a number combination. Reference numeral 21 denotes a lock latch that is pivotally supported on the outer cylinder member of the lock body 20 or on the latch holder 22. The lock latch 21 is connected to the engaging portion 21 by a latch spring 23 built into the latch holder 22.
a is provided on the latch holder 22 so as to always protrude from the storage portion 24 of the latch holder 22. The lock latch 21 is provided so that it only rotates when the knob dial member 25 of the lock body 20 is rotated and the notch 27 of the rotor 26 etc. is set at the unlocked position. .

Reference numeral 28 denotes a receiving member that engages with and disengages from the lock latch 21 provided on the inner wall b of the storage box. This receiving member 28 is fitted into a cylindrical fitting body 29 fixed to the end of the inner wall b of the storage box This is a catch latch 28 that slides into contact with the lock latch 28 when the lock latch 28 is closed. The receiving latch 28 has an engaging portion 2 of the lock latch 21 on its outer peripheral surface as shown in the figure.
1a is formed, and a vertical stopper surface 21b that contacts the engaging portion 21a of the lock latch 21 is formed on the outer peripheral surface opposite to the surface on which the tapered surface 28a is formed. ing.

In the above structure, when opening the door a when the lock body 20 is in the unlocked state, the lock latch 21 rotates about the latch shaft 21b (X line) as shown in FIG. Then, it is released from the catch latch 28. At this time, the receiving latch 28 is positioned at its protruding upper surface (X
1 line).

Next, when the door a is closed when the lock body 20 is in the locked state, the lock latch 21 does not rotate or move up or down with respect to the latch shaft 21b (line X), as shown in FIG. , the receiving latch 28 has its inclined surface 2
Since the lock latch 8a comes into sliding contact with the engaging portion 21a of the lock latch 21, it moves downward against the spring force of the spring 30 from the position of its protruding upper surface (line X1), and the lock latch 21 overcomes the receiving latch 28. Returns due to

Next, different embodiments of the present invention shown in FIGS. 5 to 7 will be explained. In the description of this embodiment, the same parts as in the embodiment of the present invention are designated by the same reference numerals, and redundant explanation will be omitted.

The main difference between this embodiment and the previous embodiment is the receiving member 28A. This receiving member 28A
is a leaf spring that is fixedly provided on the inner wall b of the storage box X1 and is displaced by sliding contact with the engaging portion 21a of the lock latch 21A that closes the door a when the lock body 20A is in the locked state.

That is, as shown in FIG. 6, when the door a is opened when the lock body 20A is in the unlocked state, the lock latch 21A pivotally supported by the lock body 20A
engages with the free end of the latch spring 23A, rotates, and eventually separates from the leaf spring 28A. On the other hand, the seventh
As shown in the figure, when the door a is closed when the lock body 20A is in the locked state, the receiving member 28
A slides into contact with the engaging portion 21a of the lock latch 21A and is displaced.

In the latter case, the lock latch 21A does not rotate or move up and down, and the leaf spring 28A engages the engaging portion 2 of the lock latch 21A.
It is displaced outward by sliding contact with 1a. And door a
When completely closed, the leaf spring 28A returns to its original state with a "snap" and engages with the lock latch 21A.

``Effects of the present invention'' As is clear from the above explanation, when the door is opened, the lock latches 21, 21A of the lock body are
is detached from the receiving members 28, 28A by just rotating, whereas when the door is closed, the lock latch engages with the receiving member without rotating or moving up and down, so the latch holder or outer cylinder member that houses the lock latch is can take up as little space as possible.

Therefore, the lock body can be made more compact. Further, even if the door is forcibly closed when the lock bodies 20, 20A are in the locked state, the receiving members 28, 28A provided on the inner wall of the storage box move or are displaced, so the lock bodies are almost never damaged.

[Brief explanation of the drawing]

1 to 4 are explanatory views showing one embodiment of the present invention, in particular, FIGS. 3 and 4 are schematic explanatory views showing the engagement and disengagement relationship between the lock latch and the receiving member, and FIGS. 5 to 4 are explanatory views showing an embodiment of the present invention. 7 is an explanatory diagram showing another embodiment of the present invention,
FIG. 8 is a schematic sectional view showing a conventional embodiment. X, Element.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A locking device for a storage box consisting of a lock body fixed to the door of the storage box and equipped with a lock latch, and a receiving member provided on the inner wall of the storage box that engages and disconnects from the lock latch. The lock latch is pivotally supported by the lock body so as to rotate only, and the receiving member is fitted with a spring interposed in a fitting body fixed to the inner wall of the storage box, and A locking device for a storage box, characterized in that it is a receiver latch that moves in sliding contact with a lock latch when closing a door when the main body is in a locked state. 2) In a locking device for a storage box, which comprises a lock body that is fixed to the door of the storage box and is equipped with a lock latch, and a receiving member that is provided on the inner wall of the storage box and that engages and disengages from the lock latch, the lock latch is The receiving member is pivotally supported by the lock body so as to perform only rotational movement, while the receiving member is fixedly provided on the inner wall of the storage box and acts as a lock latch when closing the door when the lock body is in the locked state. A locking device for a storage box, characterized in that it is a leaf spring that is displaced by sliding contact.