JPH0318602Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a construction key device in a disc cylinder.

First, an example of the device of the present invention will be described.

(Explanation of Examples) First, the symbols in the drawings will be explained.

1: A tumbler for duplicate keys, which has a notch 11 as shown in FIG. In the cons state, a projecting piece 21 of the cons bar 2, which will be described later, engages with this notch 11, aligning the duplicate key tumbler 1 with the shear line and keeping it in a so-called "killed" state. 12 is the keyhole.

2: A cons bar, as shown in FIG. 3a, which has a recess 22 on its surface for maintaining the cons state and a recess 23 for maintaining the cons release state.

Also, on the back side, as mentioned above, there is a notch 11 for keeping the duplicate key tumbler 1 at the time of cons.
A projecting piece 21 that engages with is provided in a protruding manner.

That is, the pin p, which is attached to the spring S ₂ (FIG. 1) whose one end is fixed to the frame of the inner cylinder 3 and is pressed toward the cons bar 2, fits into the cons state retaining recess 22 during cons. The cons bar 2 is held at the cons position.

In addition, in order to release the cons state, when the inner cylinder 3 is rotated by a certain angle, the bar b is inserted from the bar insertion hole h.
When the pin p is inserted and the cons bar 2 is pushed, the pin p moves from the concavity 22 for maintaining the cons state to the concavity 23 for maintaining the cons release state.

3: The inner cylinder has a key guide g on the front with a bar insertion hole h, and a tumbler for duplicate keys 1,
It incorporates a disc tumbler 4 for con skis, a con bar 2, and a pin p. cons bar 2
is guided by the cons bar guide 2a.

4: Conkey disc tumbler, 41 is its keyhole.

5: In the partition plate, 51 is a keyhole thereof, and 52 is a notch on which the projecting piece 21 moves, as will be described later.

6: Outer cylinder, 61 is its tumbler fitting groove.

S ₁ : Tumbler pressing spring for disk tumblers 1 and 4.

S ₂ : A cons bar pressing spring that has one end fixed to the frame of the inner cylinder 3, a pin p attached to the other end, and presses the pin p toward the cons bar 2.

g: Key guide with bar insertion hole h.

h: The bar insertion hole of the key guide g, which is located on the same line as the cons bar 2 when the inner cylinder 3 is moved down a certain angle.

b: Bar.

x: Guide bar of tumbler for duplicate key and cons key [Description of function] Cons state: Projecting piece 21 of cons bar 2 engages with notch 11 of disk tumbler 1 for duplicate key, and pulls disk tumbler 1 for duplicate key along the shear line. , kill the duplicate key tumbler 1, and maintain the cons state. At this time, the pin p engages with the cons state holding recess 22 of the cons bar 2, and maintains the cons state position of the cons bar 2.

In the cons state, the lock can be unlocked by inserting the con key and aligning the cons disc tumbler 4 with the shear line.

Canceling the cons state: To cancel the cons state, first insert the duplicate key into the keyhole in the state shown in Fig. 2 and rotate the inner cylinder 3.
For example, the pin p is rotated to the position of the tumbler fitting groove 61 of the outer cylinder 6.

As a result of rotating the inner cylinder 3 at a certain angle in this manner, the bar insertion hole h and the cons bar 2 are positioned in line.

In Figure 1, the pin p is connected to the tumbler fitting groove 6 of the outer cylinder 6.
This shows the state when facing 1.

Next, insert the bar b from the bar insertion hole h of the key guide g.
Insert the cons bar 2 and push it towards the back of the cylinder. As a result, the engagement between the duplicate key tumbler 1 and the projection piece 21 of the cons bar 2 is released, and the projection piece 21 is released.
1 moves into the notch 52 of the partition plate 5. Along with this movement of the cons bar 2, the pin p moves from the cons state holding recess 22 to the cons release state holding recess 23, and secures the position of the cons bar 2 when the cons is released.

When a different key is inserted: Even if a different key is inserted to release the cons state, the different key will move the duplicate key tumbler 1 and the cons tumbler 4 to the tumbler fitting groove 61 of the outer cylinder 6.
Fits in. Therefore, since the inner cylinder 3 cannot be rotated, the cons state cannot be released.

[Prior art and purpose of the present invention]

Conventionally, in order to release the cons state of a disk cylinder, it has been necessary to take complicated means, such as removing a chip for maintaining the cons state. Furthermore, as a result of removing the chip in this way, a third party such as a construction worker can easily produce a duplicate key, which increases the risk.

The present invention aims to solve the problems of the conventional cons state release method.

As described in the explanation of the embodiment, the present invention is configured by simply inserting the duplicate key 5 in the cons state, rotating the inner cylinder 3, inserting the bar b from the bar insertion hole h, and pushing the cons bar 2. It has a configuration that allows the state to be released.

The present invention is intended to provide a construction key device for a disk cylinder which is capable of releasing the cons state with a simple operation and is safe.

[Operation and effect of the present invention] After inserting the duplicate key and rotating the inner cylinder 3, the bar b
The cons state can be canceled by simply pressing the cons bar 2, making it easy to handle.
It is safe because there is no need to hand over the duplicate key to anyone.

Also, since it is necessary to rotate the inner cylinder 3 with a duplicate key before inserting the bar b into the bar insertion hole h,
You cannot release the cons state unless you have the duplicate key. Therefore it is safe.

The structure is simple because the bar insertion hole h is simply bored in the key guide g.

[Brief explanation of the drawing]

FIG. 1: A longitudinal sectional view of the device of the present invention in a cons condition, with the outer cylinder 6 omitted. Second
Figures: Fig. 1-line equivalent sectional view, Fig. 3a: Surface view of cons bar 2, Fig. 3b: back view of cons bar 2, Fig. 4: Perspective view of disc tumbler 1 for duplicate key, 1... for duplicate key. Disc tumbler, 11...
Notch, 12... Keyhole, 2... Cons bar, 21
... Projection piece, 22 ... Concavity for maintaining cons state, 23
...Concavity for holding the cons release state, 3...Inner cylinder, 4
...Disc tumbler for consky, 41...
Keyhole, 5... Partition plate, 51... Keyhole, 52... Notch, 6... Outer cylinder, 61... Tumbler fitting groove of outer cylinder, g... Key guide, h... Bar insertion hole, b...
... Bar, p ... Pin, S ₁ ... Tumbler pressing spring, S ₂ ... Cons bar pressing spring.

Claims (1)

[Claims for Utility Model Registration] Consisting of an outer cylinder 6 having a tumbler fitting groove 61 and an inner cylinder 3, the inner cylinder 3 includes a partition plate 5 having a notch 52, and a duplicate key disc tumbler 1 having a notch 11.
, a disc tumbler 4 for a console key, a key guide g with a bar insertion hole h, a console bar having a concavity 22 for retaining the cons state, a concavity 23 for retaining the cons release state on the outside, and a protrusion 21 on the inside. 2, and a pin p which is pressed toward the cons state holding recess 22 and the cons release state holding recess 23 by a cons bar pressing spring S2 fixed to the inner cylinder ₃ , In this case, the protruding piece 21 of the cons bar 2 is engaged with the notch 11 of the disc tumbler 1 for a duplicate key, so that the disc tumbler 1 for a duplicate key is aligned with the shear line, and the pin p is inserted into the concavity of the cons bar 2 for maintaining the cons state. 22, and at the time of releasing the cons state, the cons bar 2
and the bar insertion hole h so that the bar b can be inserted, and when the bar b is inserted, the pin p is inserted into the cons state holding recess 22 from the position where the pin p is inserted into the cons release state holding recess 23. The arrangement is such that the cons bar 2 can be moved to a position where it fits in, and when the cons state is released, the cons bar 2 and the bar insertion hole h are in line, and the projecting piece 21 of the cons bar 2 A construction key device for a disk tumbler, characterized in that the pin P is engaged with a notch 52 of a partition plate 5, and the pin P is fitted into a concavity 23 for maintaining the released state.