JPS5815555Y2 - Anti-picking cover - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an anti-picking cover which prevents picking by covering a cylinder lock.

Conventionally, for example, in a cylinder lock with a built-in pin tumbler, a wire, screwdriver, etc. is inserted into the keyhole of the cylinder lock body, and the pin tumbler and the numerous pins protruding from the pin tumbler are removed. There have been cases where the lock has been unlocked or theft has been carried out by operating the .

The present invention has been made in view of the above-mentioned points, and its purpose is to provide an anti-picking cover that can be placed over a known cylinder lock to protect the cylinder lock body and prevent picking. .

Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings.

Reference numeral 1 denotes a substantially bowl-shaped cover body that covers a conventional cylinder lock body 2. On the top surface of this cover body 1, a key operation JL5 into which an operating lever 4 of a key 3 can be inserted is attached to the cylinder lock body 2. The key hole 6 is coaxially opened in the longitudinal direction of the dish-shaped head 2a provided at the top of the key 3, and the key operation hole 5 is connected to a large diameter insertion hole 8 into which a pin operation tube 7 provided at the tip of the key 3 is inserted. It is set up.

9 is the neck 2 of the cylinder lock body 2 having a dish-shaped head 2a.
This is a retaining hole formed on the lower surface of the cover body 1 in order to engage the cover body 1 with the lock body 1, and this engagement hole 9 has one side inserted in order to facilitate insertion of the cylinder lock body 20 neck 2b. The expanded portion 9a is for use.

One embodiment of the present invention has the above-mentioned configuration. First, when the cover body 1 is mounted on the cylinder lock body 2, the insertion expansion portion of the engagement hole 9 formed on the lower surface of the cover body 1 9a
The dish-shaped head 2a of the cylinder lock body 2 is accommodated in the cover body 1 by inserting the dish-shaped head 2a of the cylinder lock body 2 into the cover body 1 from diagonally below.

Then, the cover main body 1 is slid to engage the neck portion 2b of the cylinder lock main body 2 in the engagement hole 9, thereby covering the cylinder lock main body 2 with the cover main body 1 and protecting it.

Even if the cover body 1 is pulled upward as it is, it is difficult to remove the cover body 1 from the cylinder lock body 2.

Therefore, it is difficult to insert a wire, screwdriver, etc. into the keyhole 6 of the lock body 2 of the cylinder lock body 2 because the cover body 1 interferes with the pin tumbler in the keyhole 6 and the pin tumbler.
It is possible to prevent re-picking, which makes it difficult to operate a large number of pins (not shown) protruding from the top.

To remove the cover body 1 from the cylinder lock body 2, slide the cover body 1 in the opposite direction to the previous movement, and insert the dish-shaped head 2a of the cylinder lock body 2 into the expansion part 9a for insertion. to disengage the dish-shaped head 2a from the engagement hole 9.

Then, by tilting the cover body 1, the dish-shaped head 2a of the cylinder lock body 2 is tilted with respect to the expansion part 9 for insertion, and by pulling up the cover body 1, the cover body 1 can be moved into the cylinder lock body. It becomes possible to take the crown from 2.

Once the cover body 1 is placed on the cylinder lock body 2 as described above, the top surface of the object to which the cylinder lock body 2 is attached and the plate-shaped head 2a of the cylinder lock body 2 are connected. Since the expansion and expansion part 9b for insertion is held between them, the cover main body 1 cannot be tilted.

Therefore, it is difficult to remove the cover body 1 from the cylinder lock body 2, which is significant in terms of crime prevention.

To unlock or lock the lock properly, insert the pin operation tube 7 of the key 3 into the large diameter insertion hole 7L8 formed on the top surface of the cover main body 1, and then move the key 3 to open the large diameter insertion hole. When the operating rod 4 of the key 3, which has the pin operating cylinder 7 at the tip, is moved into the key operating hole 5 connected to the key operating hole 5, the key operating hole 5 and the key hole 6 of the cylinder lock body 2 are aligned for the first time, so that the pin is operated. Tube 7
The cylinder lock body 2 is unlocked or locked by inserting the key into the keyhole 6 and rotating the key 3.

Even if you try to pull out the key 3 with the pin operation tube 7 of the key 3 inserted into the keyhole 6 of the cylinder lock body 2 in this way, the back of the pin operation tube 7 will not engage with the key operation hole 5. I can't pull it out.

To pull out the key 3, the operating rod 4 is moved from the key operation hole 5 into the large diameter insertion hole 8, and the pin operation tube 7 is pulled out from the large diameter insertion hole 8.

As described above, the present invention protects the cylinder lock body and prevents picking by directly covering the conventional cylinder lock.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the cover body mounted on a conventional cylinder lock. 1...Cover body, 2...Cylinder lock body, 2a...Dish-shaped head, 2b...
Neck, 3...key, 4...operating rod, 5.
...Key operation hole, 6...Keyhole, 7...
...Pin operation tube, 8...Large diameter insertion hole, 9...
...Engagement hole, 9a... Expansion and expansion part for insertion.

Claims (1)

[Scope of utility model registration request] A retaining hole is formed in the lower surface of the cover body, which is approximately in the shape of a bowl, and one side has an expanded part for insertion. A key operation hole into which the operating rod of the key can be inserted is provided on the upper surface of the cover body at a position opposite to the keyhole of the cylinder lock body. and a large-diameter insertion hole into which a large-diameter pin operation tube provided at the tip of the operating rod is connected to the key operation hole.