JPH0246610Y2 - - Google Patents

Description

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

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

[Explanation of Examples]

First, the symbols in the drawings will be explained.

1: Construction key Its convex portion 101 is lower than the convex portion 501 of the duplicate key 5.

Further, the portion facing the duplicate key tumbler 9 when the keyhole insertion is completed is notched so that it can be rotated within the key insertion hole of the duplicate key tumbler 9.

2: Release chip As shown in FIG. 4, it is inserted between the front f and the adjacent front side partition plate 8a. The bent portions 201, 201 pass through the insertion hole 201h of the front partition plate 8a shown in FIG. It moves from the state shown in FIG. 2 to the state shown in FIG. 3 with the plate 8a in between.

The details of its action will be described later.

The stepped portion 202 is connected to the cons bar 3 as described later.
Push the taper part 301 to move the cons bar 3.

3: Cons Bar When constructing the duplicate key tumbler 9 operated by the duplicate key, its protrusion 302 engages with the groove 901 of the duplicate key tumbler 9 to align the duplicate key tumbler 9 with the shear line.

Also, the tapered part 301 is the release tip 2.
It is provided to move in the keyhole axial direction by being pushed by the stepped portion 202 of the keyhole.

4: Release tumbler Provided between the partition plate 8a adjacent to the front f and the next partition plate 8b. The bent portion 201 of the release tip 2 is inserted into the elongated hole 402, and the convex portion 401 is made to protrude into the tumbler locking groove 601 of the outer cylinder 6 during construction.

5: Duplicate key Its convex portion 501 is higher than the convex portion 101 of the construction key 1.

6: Outer cylinder Has a tumbler locking groove 601 that locks the tumblers 4, 9, and 10 when protruding.

7: Inner cylinder 8: Partition plate Except for the front side partition plate 8a and the next partition plate 8b, which will be described later, the other partition plates 8 have grooves 801 for accommodating the projecting pieces 302 of the cons bar 3 after the construction state is released. has. (Fig. 8) 8a is the front side partition plate adjacent to the front f, 8b is the next partition plate, and these partition plates 8a, 8
b does not have the groove 801.

9: Duplicate key tumbler At the time of construction, cons bar 3
It has a groove 901 that engages the protruding piece 302.

10: Constumbler This is a tumbler that the construction key 1 engages with.

S ₁ : Spring that presses the release tip 2 downward in the drawing (Figures 1 and 2) S ₂ : Spring that holds down the cons bar 3,
When the construction state is released, as the cons bar 3 moves, the protruding piece 302 engages with the recess on the back surface to hold the cons bar 3 in a fixed position. (Fig. 4) S ₃ : Release spring that presses the convex part 401 of the release tumbler 4 into the tumbler locking groove 601 (Fig. 2) (Explanation of action) During construction (Fig. 1) Fig. 1 shows the present invention Indicates the construction state of the device.

The release tip 2 is located at the lowest position in the drawing with respect to the elongated hole 402 of the release tumbler 4.

Further, the convex portion 401 of the release tumbler 4 remains projected into the tumbler locking groove 601 of the outer cylinder 6, being pushed by the release spring _S3 .

Further, the projecting piece 302 of the cons bar 3 engages with the groove 901 of the duplicate key tumbler 9 (FIG. 8), and the duplicate key tumbler 9 is aligned with the shear line.

Further, as described above, since the release tip 2 is located at a low position in the drawing, its stepped portion 202 is located at a lower level than the cons bar 3.

When the construction key 1 is inserted into the keyhole, the constabler 10 is aligned with the shear line, and when the inner cylinder 7 is rotated, the release tumbler 4
are aligned with the shear line, but since the release tip is not pushed up, the cons bar 3 is not moved and the construction state is maintained.

State where the duplicate key 5 is inserted into the keyhole (Fig. 2) When the duplicate key 5 is inserted into the keyhole, the protrusion 50 of the duplicate key 5
1 is higher than the convex portion 101 of the construction key 1, the release tip 2 rises in the long hole 402 of the release tumbler ₄ against the spring S1 in the drawing. Thus, the step 202 of the release tip 2 reaches the same level as the cons bar 3. The release tip 2 is then pushed by the duplicate key 5 and moves in a pressed state against the spring _S1 . Along with this, the step 2 of the release tip 2
02 pushes the tapered portion 301 of the cons bar 3. The cons bar 3 then moves to the right in FIG. Then, as shown in FIG.
It separates further and moves into the groove 801 of the partition plate 8.
The construction state is thus released.

Furthermore, in Fig. 4, the cons bar 3 is held down by the spring _S2 to maintain the construction state, but when the cons bar 3 moves as described above, the spring
The lower end of S ₂ falls into the recess on the back side of the protruding piece 302,
Fix the cons bar 3. In this way, the state of construction state release is maintained.

The state in which the inner cylinder 7 is rotated by the duplicate key 5 (third
(Fig.) Next, when the inner cylinder 7 is rotated as shown in Fig. 2 to Fig. 3 with the duplicate key 5, the convex part 40 of the release tumbler 4
1 is retracted into the inner cylinder 7, and as a result, the release tip 2 also moves from the position shown in FIG. 2 to the position shown in FIG. ₃ in the opposite direction of the tumbler locking groove 601.
move against.

That is, as shown in FIGS. 1 and 2, the width of the keyhole 2h of the release chip 2 is set larger than the width of the duplicate key 5.

Similarly, the elongated hole 402 of the release tumbler 4 has the same height as the duplicate key 5 and a large width.

By the way, in the construction state, the spring S ₃ causes the release tumbler 4 to press its protrusion 4.
01 is biased so as to be locked in the tumbler locking groove 601 of the outer cylinder 6.

Since the release tumbler 4 and the release tip 2 are connected at the bent portion 201 so that they can move relative up and down, the release tip 2 also fits into the tumbler locking groove 6 of the outer cylinder 6 with the partition plate 8a in between.
It is being pushed towards 1.

Further, as shown in FIG. 6, the insertion hole 201h of the front side partition plate 8a of the bent portion 201
The height allows the vertical movement of the 01.

Under such conditions, when the release tumbler 4 and the release tip 2 are positioned in the inner cylinder 7 toward the tumbler locking groove 601 of the outer cylinder 6, the master key is locked as shown in FIGS. 2 and 3. It is rotated by 5.

Then, because of its tapered shape, the convex portion 401 of the release tumbler 4 is retracted into the inner wall of the outer cylinder 6 as the inner cylinder 7 rotates.

That is, the release tumbler 4 and the release tip 2 move to the opposite side of the tumbler locking groove 601 against the release spring _S3 using the front partition plate 8a and the duplicate key 5 as guides.

In this way, the lock can be unlocked simply by inserting the duplicate key 5 in the construction state.

(Prior Art and Object of the Invention) Conventionally, in order to release the construction state of a lock, a complicated process such as removing a chip for maintaining the construction state was required. Furthermore, as a result of removing the chip in this way, a third party such as a construction worker can easily create a duplicate key, which increases the risk.

It is an object of the present invention to solve the problems of the conventional construction state release method.

(Structure of the Present Invention) As described in the description of the embodiments, the present invention relates to a disk cylinder lock having a structure in which the construction state can be released by simply inserting the duplicate key 5 during construction.

That is, the construction state release device of the present invention includes a release tumbler 4, a release tip 2 that is vertically slidable along the elongated hole 402 of the release tumbler 4, and a construction key 3.
In the construction state, by rotating the inner cylinder 7 after inserting the duplicate key 5, the release tip 2 is lifted by the duplicate key 5, pushes the tapered part 301 of the cons bar 3, and releases the cons bar. 3 is moved so that the construction state can be canceled immediately.

(Operations and Effects of the Present Invention) The construction state can be released by simply inserting the duplicate key 5 without requiring any special operation to release the state at the time of construction.

[Brief explanation of the drawing]

Figure 1: A cross-sectional view of the device of the present invention in the construction state, Figure 2: A cross-sectional view when the duplicate key 5 is inserted, Figure 3: The inner cylinder 7 with the duplicate key 5 inserted.
FIG. 4 is a transverse cross-sectional view when rotated: shows a portion corresponding to the cross section of FIG. 1 in the construction state. FIG. 4: Similarly shows the state at the time of release of construction. Figure 5: schematically shows the top view of Figure 4; Fig. 6: Perspective view of release tip 2 and release tumbler 4, Fig. 6a: Front view of front side partition plate 8a, Fig. 7: Perspective view of cons bar 3,
Figure 8: Tumbler 9 and partition plate 8 operated by duplicate key
FIG. 9 is a front view of the duplicate key tumbler 9 operated by the duplicate key when it is in the unlocked position. 1: Construction key, 101: Convex part,
2: Release chip, 2h: Chip keyhole, 20
1: Bent part, 201h: Bent part insertion hole (Fig. 6), 202: Step part, 3: Cons bar, 301:
Tapered part, 302: Projection piece, 4: Release tumbler, 401: Convex part, 402: Long hole, 5: Duplicate key,
501: Convex portion, 6: Outer cylinder, 601: Tumbler locking groove, 7: Inner cylinder, 8: Partition plate, 8a: Front side partition plate, 8b: Next partition plate, 9: Duplicate key tumbler, 10: Constant Blur, S ₁ : Spring,
S ₂ : Spring, S ₃ : Release spring, f:
front.

Claims (1)

[Claims for Utility Model Registration] (a) The convex portion 501 of the duplicate key 5 is higher than the convex portion 101 of the construction key 1, (b) The outer cylinder 6 has a tumbler locking groove 601, and (c) The inner cylinder 7 is at the front. It is partitioned from the f side by the front side partition plate 8a, the next partition plate 8b, and the partition plate 8, and between the front f and the front side partition plate 8a is a release chip 2 having a chip keyhole 2h.
Between the front side partition plate 8a and the next partition plate 8b, there is a release tumbler 4 having a long hole 402 and a tapered protrusion 401 that locks into the tumbler locking groove 601. The buller 10 and the duplicate key tumbler 9 are inserted, E. The cons bar 3 having the projecting piece 302 and the tapered part 301 is biased in the cylinder axis direction by a spring _S2 and is provided parallel to the cylinder axis, and H. The release tip 2 and the release tumbler. 4 is connected to the front partition plate 8a so as to be slidable up and down, and a release spring _S3 allows the release tumbler 4 to have its protrusion 401 inserted into the tumbler locking groove 601 of the outer cylinder 6. The keyhole 2h of the release tip 2 and the elongated hole 402 of the release tumbler 4 are wider than the width of the construction key 1 and the duplicate key 5, and the release tumbler 4 and the release tip 2 are connected to the release spring.
The stepped portion 202 of the release tip ₂ is in a position where the tapered portion 301 of the cons bar 3 is pushed and moved when the duplicate key 5 is inserted into the release tip 2. The protruding piece 302 of the cons bar 3 is inserted into the groove 901 of the duplicate key tumbler 9 during construction.
A construction key device for a disk cylinder lock, characterized in that the construction key device is configured to engage with the key and to separate when the construction is released.