JPS58754Y2 - Anti-picking cover - Google Patents

Description

[Detailed explanation of the idea] This invention is achieved by covering the cylinder lock.

This invention relates to a pinking prevention cover that prevents pinking.

Conventionally, for example, in cylinder locks that house a T-pin tumbler inside, pinking (pick-ing) has been used.
The lock may be unlocked by inserting a wire, screwdriver, etc. into the keyhole of the cylinder lock body and operating the pin tumbler and the numerous bottles protruding from the pin tumbler, or theft may occur. Ta.

The present invention was made in view of the above points, and its purpose is to provide an anti-pinking cover that protects the cylinder lock body by covering it with a known cylinder lock, and also prevents picking. be.

Hereinafter, the present invention will be explained according to an embodiment and the accompanying drawings.

Reference numeral 1 denotes a substantially bowl-shaped cover body that is placed over a conventional cylinder lock body 2. On the top surface of the cover body 1, a key operation hole 5 into which an operating lever 4 of a key 3 can be inserted is provided in the cylinder lock body 2. It is opened coaxially with the keyhole 6 provided in the key hole 6, and the key operation hole 5 is connected with a large diameter insertion hole 8 into which a pin operation tube 7 provided at the tip of the key 3 is inserted.

Reference numeral 9 denotes an engagement hole formed on the lower surface of the cover body 1 in order to engage the cover body 1 with the neck 2a of the cylinder lock body 2; The bottom surface is approximately U-shaped.

Reference numerals lla and 11b are engagement claws provided facing the insertion cutout 10 in order to prevent the cover body 1 from coming off from the cylinder lock body 2.

As described above, in one embodiment of the present invention, by inserting and engaging the neck portion 2a into the engagement hole 9 from the insertion cutout 10,
Engagement claws 11a, ll provided opposite the insertion cutout 10
b engages with the neck part 2a to prevent it from coming off, and protects the cylinder lock body 2 by covering the cover body 1 with the cylinder lock body 2 in a robust structure.

Therefore, since the cover body 1 is covered with a crown, it is difficult to insert wires, screwdrivers, etc. into the keyhole 6 of the cylinder lock body 2, and the pin tumbler in the keyhole 6 and the large number of bottles protruding from the pin tumbler are difficult to insert into the keyhole 6 of the cylinder lock body 2. This makes it difficult to operate and prevents pinking.

To unlock or lock the lock properly, insert the pin operation tube 7 of the key 3 into the large diameter insertion hole 8 formed on the top surface of the cover body 1, and then move the key 3 to insert the large diameter insertion hole. When the operating rod 4 of the key 3 having the pin operating tube 7 at the tip is moved into the key operating hole 5 connected to the hole 8, the axes of the key operating hole 5 and the key hole 6 of the cylinder lock body 2 are aligned. The cylinder lock body 2 is unlocked or locked by inserting the pin operation tube 7 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 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 bottle operation tube 1 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 the drawing]

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
... neck, 3 ... key, 4 ... operating rod, 5 ... key operation hole, 6 ... keyhole, 7 ... pin operation tube, 8 ...
Large diameter insertion hole, 9... Engagement hole, 10... Insertion cutout, lla, 11b... Engagement claw.

Claims (1)

[Scope of utility model registration request] The neck of the dish-shaped head provided on the upper part of the cylinder lock body is inserted into the approximately U-shaped engagement hole formed on the lower surface of the approximately bowl-shaped cover body and one side of which is formed as an insertion cutout. When engaged, the cover body is fitted onto the cylinder lock body, and an engagement claw for preventing removal is provided opposite to the insertion cutout, and a key operation lever that allows insertion of the operating rod of the key is provided. A hole is provided in the upper surface of the cover main body coaxially with the keyhole provided in the dish-shaped head, and a large diameter insertion hole into which a bottle operating tube provided at the tip of the operating rod is inserted is provided in the key operating hole. A pinking prevention cover characterized by continuous installation.