JPS5939594B2 - Jiyou - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a key convertible lock, and particularly to a key convertible lock to which a disc tumbler mechanism is applied.

Currently, various types of locks have been developed that allow the lock to be used as is by changing the key even if the key is lost or the user changes. Some things may even be necessary.

This invention was developed in view of the above circumstances, and will be described below with reference to illustrated embodiments.

This lock consists of a receiving disc tumbler 1, a sliding disc tumbler 2, a first key 3, and a second key 3'. The structure is such that an inverted U-shaped sliding body q of the sliding disc tumbler 2 can reciprocate in this groove, and the sliding body 5' is connected to a locking mechanism of an opening/closing door etc. via a shaft 18. It is now possible to connect to.

A plurality of sliding grooves are formed in the receiving tumbler body 5 of the receiving disc tumbler 1 by partition walls 6 arranged in parallel.
A receiving disk 4 is fitted into this sliding groove so as to be vertically slidable.

A key hole 7 for the first key 3 is formed through the receiving tumbler main body 5, its partition wall 6, and the receiving disk 4.
Further, the receiving disk 4 is urged by a spring 8.

Furthermore, a plurality of sliding grooves are formed in the sliding body 5/ of the sliding disc tumbler 2 by partition walls 6' arranged in parallel, and the sliding disc 4' is vertically slidable in these sliding grooves. A key hole γ for the second key is formed through the sliding body 5', the partition wall 6', and the sliding disc 4', and the sliding disc 4' is biased by a spring 8'. .

The receiving disc tumbler 1 and the sliding disc tumbler 2 have the same key notches and form a set.

Push the first key 3 and the second key 3' into each key hole 7.7'.
, the receiving disk 4 moves in and out of the groove of the catcher and the puller body 5 in accordance with the notches of the key, and the sliding disk 4' moves into the surface of the sliding body 5' in accordance with the notches of the key. The discs 4, 4' are engaged with each other and can be locked.

Even if the keys 3 and 3' of the set are changed, if the keys of the set have the same indentation, both disks 4. - A is in a meshed state, so the notch of the key can be changed to facilitate key conversion.

When one of the keys 3, 3' is removed, the unevenness of one of the disks 4, 4 biased by the springs 8, 8' becomes irregular, and the disks 4, 4' cannot mesh.

Figures 4 to 7 show applications of the above lock.

That is, both the first and second keys 3 and 3' are pressed. When the hub 9 is rotated by rotating the knob 11 provided at the end of the square shaft 10 inserted into the hub 9 while the isk tumblers 1 and 2 are fitted, the arm rod 1 fixed to the hub 9 is rotated.
The upper protrusion 13 of 2 retracts the tailpiece 14.

At the same time, a guide 15 provided on the tail piece 14
The roller 16 is lowered along the roller 16, and the lever 17 connected thereto inserts the sliding disc tumbler 2 into the receiving disc tumbler 1 via the shaft 1B.

Further, as the hub 90 rotates, the mouth-shaped link 19 pivotally attached to the lower end of the arm rod 12 rotates, and due to stiffness, the link 1
A link 22 in which a protrusion 20 of 9 is fixed to a thumb turn 21
The link 22 is rotated by hooking the protruding rod 23.

Further, as the link 22 rotates, the protrusion 24 protruding to the side releases the locking rod 25, allowing the deadbolt 26 to retreat to position A shown by the chain line. It retreats together with the tail piece 14 which retreats due to rotation.

By the way, as shown in detail in FIGS. 6 and 7, the shaft 1B is provided with a tapered recess 28 on the inner surface of one side, into which a corner of an angled pressing spring 29 is engaged. As the shaft 18 moves due to the rotation of the knob 9, the presser spring 29 is pushed up and its tip presses the link 19.

In this state, the protrusion 20 of the link 19 is connected to the protrusion rod 2 of the link 22.
Can be combined with 3.

Note that the spring 31 disposed on the shaft 18 is weaker than the spring 30 and is normally used to keep the sliding disc tumbler 2 drawn out.

Therefore, if the notches of the keys 3 and 3' are different, or if one of the keys is removed, the discs 4 and 4' will not mesh even if the knob 11 is rotated, and the sliding disc tumbler 2 will be It is not inserted into the disc tumbler 1, the shaft 18 does not move, the link 19 is not engaged with the link 22 by the presser spring 29, and neither unlocking nor locking is possible.

Of the keys 3 and 3' in the set, the first key 3 is used as a master key that can be carried at all times, and the second key 31 is used as a memory key that is normally attached to the lock. By embedding the memory key in the dynamic disc tumbler 2, theft of the memory key can be prevented.

As described above, according to the present invention, when a set of keys is inserted into both the receiving disc tumbler and the sliding disc tumbler, the disc of the receiving disc tumbler and the disc of the sliding disc tumbler are engaged with each other. By making it possible to unlock the deadbolts linked to these disc tumblers, when one of the keys is removed or a key with a different indentation is used, the discs of the receiving disc tumblers will slide against each other. The discs of the disc tumbler do not mesh and cannot be unlocked, and by changing the pair of keys, the mutual engagement conditions of the discs can be changed. There is no need to replace everything, which is economical and convenient.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is an elevational view showing the engagement of a receiving disc tumbler and a sliding disc tumbler, and FIG. 2 is a first elevational view showing the structure of the receiving disc tumbler. 3 is a sectional view taken along line A-A in the figure, FIG. 3 is a sectional view taken along line B-B in FIG. 1 showing the engaged state of both disc tumblers, and FIG. Fig. 5 is a sectional view showing the locked state, Fig. 6 is a partial view showing the relationship between the shaft of the sliding disc tumbler and the presser spring, and Fig. 7 is a cross-sectional view showing the presser spring. FIG. 4 is a cross-sectional view showing the operation of the mouth-like link. 1...Receiving disc tumbler-12...
Sliding disc tumbler-13...1st key, 3
'...Second key, 4...Receiving disk,
4'... Sliding disk, 5... Receiving tumbler body, 5'... Sliding body, 6...
Partition wall, 6'...Partition wall, 7,7'...
Key hole, 8, 8'...Spring, 9...
...Hub, 10...Square shaft, 11...Knob, 12...Arm rod, 13...Top projection, 14... Tail piece, 15...Guide, 16...Roller, 17...Lever lever, 18...Shaft, 19...Mouth link , 20...Protrusion, 21...Thumb turn, 22...Link, 23...Protrusion bar, 2
4... Protrusion, 25... Locking rod, 26.
... Dead bolt, 27 ... Latch bolt, 28 ... Recess, 29 ... Holder spring, 30 ... Spring, 31 ... ···Spring.

Claims (1)

[Claims] 1 Receiving tumbler - A receiving disc tumbler in which a groove is formed by making the main body into an inverted U shape, a sliding disc tumbler in which a sliding body is provided that reciprocates within this groove, and a first key and a first key having the same notch. A plurality of sliding grooves are formed in the receiving tumbler body by partition walls arranged in parallel, and a receiving disk is fitted into the sliding grooves so as to be vertically slidable, and the partition wall and a key hole for a first key is formed through the receiving disk, a plurality of sliding grooves are formed in the sliding body by partition walls arranged in parallel, and a sliding disk is in the sliding groove. A receiving disk that is slidably inserted vertically and has a key hole for a second key formed through the partition wall and the sliding disk, and is slid by the first key and second key inserted into the key hole. A lock characterized in that the sliding disc and the sliding disc can be engaged with each other so that the sliding disc tumbler can be inserted into the groove of the receiving disc tumbler.