JP2007186971A - Key - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent unlocking with a key by an unlocking act of persons other than a user by inserting an unlocking tool or the like into a keyhole from the outside in the case of a conventional key. <P>SOLUTION: The keyhole is usually closed with a lock pin, and if the key or the like is inserted in the keyhole in this closed state, the lock pin is pressed and slid to lock. When a bored key is inserted into the innermost part, the lock pin is stuck into a hole part of the bored key by a spring, and the lock pin slides to the opposite side to release the lock. Locking/unlocking can thereby be performed only by the exclusive key. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a key for locking the door and prevents the key from being opened easily.

In the case of a conventional key, it is exposed to a crime etc. by easily inserting a metal piece into a key slot.

Problems to be solved by the invention

In the conventional key structure, since the key slot is exposed, the problem is to be solved by closing the slot and using a special key.

Means for solving the problem

In order to solve this problem, the invention of claim 1 is provided with a key lid and a lock mechanism in order to make it difficult to insert a metal piece or the like into an external keyhole.

Further, the invention of claim 2 is a special key for opening the keyhole lid to release the lock pin, and the key cannot be opened by being combined with this key to be locked.

The invention's effect

It is easy to open using a special key when trying to open the key, but if you try to open it by any other method, it will be locked and the key will not open.

BEST MODE FOR CARRYING OUT THE INVENTION

Fig. 1 shows a key that is used to release a lock by sliding a hole in a part of the key in front of the conventional key cylinder and sliding it into this hole. The lock of the conventional key cylinder is also released. Thus, it becomes a double safety structure of the conventional part and the invention part.

Figure 2 shows that the lock is released by inserting the special key and the lock pin of the invention part is inserted in the front part of the key, and the lock of the conventional key cylinder is released and the key can be opened.

The existing materials can be used as they are, and the safety can be greatly improved by adding new parts of the present invention without changing the structure.

Since the present invention can be added to various keys by attaching the present invention to all keys, it has industrial applicability in various places.

This is a vertical cross section with a key inserted outside and inside the key cylinder. This is a cross-sectional view of the key cylinder with the lock pin inserted inside and outside. This is a cross-sectional view of the key cylinder front side with the key inserted. It is a front view of the key cylinder. A side view of the key. It is a top view of the key.

Explanation of symbols

1 Outside of key cylinder 2 Inside of key cylinder 3 Key with hole 4 Disc tumbler 5 Lock pin of invention part 6 Lock pin push-back spring 7 Key hole 8 Hole made on key of invention part 9 Decoration hole

Claims (2)

Regardless of mechanism, shape, or size, the lock can be released by attaching the key with the structure of the lock pin and the keyhole cover to lock the outside and inside of the key cylinder and attaching the key of claim 2 An integrated structure mechanism with a lock pin and keyhole lid to lock the inside and outside of the key cylinder when the keyhole lid is opened. A mechanism for releasing the lock pin by making a hole in the key so as to fit the lock pin of claim 1, or a key for releasing the lock pin, such as a crank type or a grooved type, as well as a hole.

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