JP2007002470A - Cylinder structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a cylinder which can be easily manufactured by employing a conventional technology, which can easily bring about a huge number of key differences, which is resistant to picking, which has high productivity, and which rarely goes out of order. <P>SOLUTION: Though one tumbler is built in each section, partitioned by a partition, of a conventional cylinder, a plurality of tumblers are built in each section of this cylinder. This realizes the cylinder which can easily bring about a huge number of key differences by employing the conventional technology, which is resistant to picking, and which has high productivity. Consequently, the number of the partitions for partitioning the sections can be reduced; the two tumblers can be operated by means of one tumbler spring; and the cylinder can be minimized. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

    The present invention relates to a technique in which a plurality of tumblers are incorporated in one tumbler section of a cylinder.

In recent years, with the increase in the size of buildings and the management area, a large number of key differences have been required in the key system plan for cylinders.
Moreover, an enormous number of key differences is required due to the complexity of the key system plan.

In addition, since unauthorized unlocking such as picking has increased and its techniques have become more sophisticated, advanced countermeasures for picking prevention have come to be demanded.

In order to deal with the above problems, locks with a complicated cylinder structure are increasing. However, due to the complexity, there are problems such as low production efficiency and poor operability.
Shoko 58-40198

The problem is to solve the problems 0002-0004.
That is, it is a problem to realize a cylinder structure that is easy to obtain an enormous number of key differences, is easy to cope with a complicated key system plan, is difficult to pick, has good productivity, is difficult to break down, and has good operability.

A conventional cylinder will be described.
Cylinders can be classified according to the structure of the cylinder. The cylinders can be divided into a pin cylinder that assembles a tumbler pin and a driver pin as a pair, and a disk cylinder that assembles one tumbler per compartment.

Comparing the structure of the disc cylinder and pin cylinder, the disc cylinder is more suitable for mass production, can be produced at low cost, and is suitable for providing many types of functions.
Therefore, in the present invention, the problem is solved based on a cylinder structure using a tumbler.

A common structure of cylinders using conventional tumblers will be described with reference to FIG.
A section (35) partitioned by partitions (34) is provided in the cylinder by the number of tumblers (36), and one tumbler is assembled in one section.
One tumbler spring (37) is assembled to one tumbler, and the tumbler is moved.
One tumbler corresponds with one keyway (38) of the combined key. Therefore, the number of keyways, the number of tumblers, the number of tumbler springs, and the number of compartments always coincide.

Cylinders using this tumbler can be divided into two types based on the movement of the tumbler. That is, the cylinder structure in which the tumbler shown in FIGS. 4 and 8 performs a linear motion, and the cylinder structure in which the tumbler shown in FIG. 6 rotates around a tumbler axis.
Further, according to the tumbler fixing mechanism, it can be divided into a structure using the locking bar shown in FIGS. 4 and 6 and a structure not using the locking bar shown in FIG.
The challenge is to solve the problem in all cylinder structures using such tumblers.

    When thinking about how to increase the number of key differences by using conventional cylinder production technology, simply increasing the number of tumblers will increase the length of the cylinder and increase the number of partitions, compartments, and tumbler springs. Inconveniences such as an increase occur.

Therefore, as a method that does not increase the length of the cylinder and increase the number of parts even if the tumbler of the cylinder is increased, it was considered that a plurality of tumblers are put in one section where the tumbler of the cylinder is inserted.
According to this, even if the number of tumblers increases, the number of partitions and the number of partitions can be reduced conversely. As a result, even if the tumbler is increased, the length of the cylinder can be shortened.
That is the cylinder structure according to claim 1.

In FIG. 2, three tumblers (11a), (11b), and (11c) are put in each of the sections (1), (2), (3), and (4) partitioned by the partition (6).
In FIG. 5, two tumblers (11a) and (11b) are put in each of the sections (1), (2), (3), (4), and (5) partitioned by the partition (6).
FIG. 7 shows four tumblers (11a) (11b) (11c) (11d) for each section (1) (2) (3) (4) partitioned by a partition (6). It is.
Even if the number of tumblers is increased, the number of partitions (6) for partitioning the tumblers is small, so the length of the cylinder does not increase and the number of parts of the cylinder does not increase much.

However, as the number of tumblers increases, the number of tumbler springs that move the tumblers is also required, but if possible, we do not want to increase the number of tumbler springs.
The invention described in claim 2 has solved this problem. A cylinder structure in which two tumblers are moved by one tumbler spring.
2 and 4 move two tumblers (11a) and (11b) by one tumbler spring (12) for each section. This can be done by adding multiple tumblers per section.
2 and 4, both tumblers are connected so that the two tumblers (11a) and (11b) are attracted by a tumbler spring (12). If you insert the key, both tumblers will be drawn. The third tumbler (11c) is free-moving and does not have a tumbler spring.

7 and 8, two tumbler springs (12a) and (12b) are assembled for each section, and two tumblers are moved for each tumbler spring.
Two tumblers (11a) and (11b) are moved by one tumbler spring (12a), and two tumblers (11c) and (11d) are moved by one tumbler spring (12b).
This tumbler spring is obtained by connecting both tumblers so as to draw each tumbler. Both tumblers can be drawn by inserting the key.
Thus, the tumbler spring can be used both in the direction of pulling the tumbler and in the direction of pushing.

By the way, when a plurality of tumblers are assembled in one section, there is a problem in which the tumblers are moved in the keyway which is a key of which key combination.
A plurality of tumblers in one section are moved by individual keyways or by the same keyway. The cylinder structure according to claims 3 and 4 has solved this problem.

2, 3, and 4 show the movement of the individual key groove of the combined key with respect to the individual tumblers in one section according to claim 3. Move one tumbler (11a) of the three tumblers in one section (1) with one keyway (21a) of the key, move one tumbler (11b) with one keyway (21b), One tumbler (11c) is moved in the keyway (20).
One of the three tumblers (11c) used one of the keyway undulations (26) as a keyway.
Thus, it can be said that the means for dealing with each tumbler with an individual keyway uses the same means as a conventional cylinder for putting one tumbler for each section for a plurality of tumblers in one section.

FIG. 8 and FIG. 9 deal with a plurality of individual tumblers in one section according to claim 4 in one keyway of the combined key. The key groove shape of the key used for the cylinder is a key having a key groove undulation (26) as shown in FIG. 3A and having a key groove tip opening (25) at the key tip.
In FIGS. 7 and 8, two tumblers are inserted in each side of the key, and four tumblers are inserted in one section. Two tumblers (11a) and (11b) are formed in the keyway (20a) on the upper surface of the key. ), And the two tumblers (11c) and (11d) are moved by the keyway (20b) on the lower surface.
When a key is inserted into the cylinder, a single key is obtained by collecting all the guide piles (19a), (19b), (19c), and (19d) of the tumbler in the keyway through the keyway opening (25) provided in the keytip The groove can handle multiple tumblers.

By adopting a cylinder structure in which a plurality of tumblers are placed in one compartment, it is possible to increase the number of tumblers without increasing the number of partitions and the number of compartments, thereby increasing the number of key differences between cylinders.
In addition, the cylinder structure indicated by 0005 can be realized.

The cylinder structure of the invention will be described with reference to the drawings.
2, 3 and 4 show three tumblers (11a), (11b) and (11c) for each section (1), (2), (3) and (4) separated by a cylinder partition (6). Indicates the cylinder that was inserted.
This cylinder is a cylinder in which the tumbler moves directly when the key is inserted and removed, and the tumbler is combined with a locking bar (13) and locked.

Two tumblers (11a) and (11b) among the three tumblers are connected by one tumbler spring (12), and the two tumblers are moved by one tumbler spring.
The other tumbler (11c) does not use a tumbler spring, and the tumbler is free-moving so that the feel of the fingertip during picking is mad. It is also possible to provide a tumbler spring for this tumbler.
In the cylinder shown in FIGS. 2 and 3, there are only 12 partitions (6) while there are a total of 12 tumblers. There are only 4 sections. Accordingly, the length of the cylinder can be shortened, and as a result, the number of key differences can be increased.

FIGS. 5 and 6 show two tumblers (11a) and (11b) for each section (1), (2), (3), (4), and (5) separated by a partition (6). Indicates.
This cylinder is a cylinder in which the tumblers (11a) and (11b) rotate around the tumbler shaft (27) when the key is inserted and removed, and the tumbler is locked by combining a locking bar (13).
The two tumblers indicate that individual tumbler springs (12a) and (12b) are assembled for each of the tumblers (11a) and (11b). A tumbler spring may move two tumblers by one. In this case, the springs are assembled so that both tumblers are drawn.
This cylinder has 10 tumblers, 4 partitions (6), and 5 partitions (1), (2), (3), (4), and (5).

FIGS. 7 and 8 show four tumblers (11a), (11b), (11c), and (11d) for each section (1), (2), (3), and (4) divided by a cylinder partition (6). Indicates that the unit has been added.
FIG. 9 shows four tumblers to be put in the one section, and key grooves (20a) and (20b) of the key shaft (17) for moving the tumblers.
Tumblers are placed in a set of two above one compartment and in pairs of two below.
A guide mountain (19) for moving the tumbler with a key is provided for each tumbler.
The key groove of the key for moving the tumbler is a guide groove of a plurality of tumblers when the key is inserted into the cylinder by the key groove opening (25) provided in the key tip as the key groove undulation (26) shown in FIG. 3A. Collect (19). The guide mountain is guided by the keyway undulation, and the tumbler is guided to a predetermined keyway (20a) (20b) position.

This cylinder is a cylinder in which the tumbler moves linearly when the key is inserted and removed, and the cylinder does not have a locking bar. The tumbler assembled to the inner cylinder is locked by the tumbler claw (30) being caught in the tumbler claw receiving groove (29) of the outer cylinder (7) for each tumbler (11).
The tumbler spring moves two upper tumblers (11a) and (11b) with one tumbler spring (12a), and lower two tumblers (11c) and (11d) with one tumbler spring (12b). .
Although FIG. 8 shows a structure in which a spring is assembled so as to push two connected tumblers apart, it is also possible to assemble a tumbler spring so as to draw it.
This cylinder has 3 partitions (6) for 16 tumblers and 4 partitions (1), (2), (3), and (4).

It is a perspective view of the cylinder of invention. In the AA cross section of FIG. 1, it shows that three tumblers were put in each section. A. It is the figure seen from the top with the joint key used for FIG. B. It is the figure seen from the side. A. FIG. 3 shows a state in which the key is removed at the position A cross section of FIG. B. The state where the key is inserted is shown. C. The state in which the key is removed is shown in the B position cross section of FIG. D. The state where the key is inserted is shown. E. FIG. 3 is a cross-sectional view at position C in FIG. F. The state where the key is inserted is shown. Shows that two tumblers are put in each section. A. FIG. 6 is a cross-sectional view at position D in FIG. B. The state where the key is inserted is shown. C. FIG. 6 is a cross-sectional view at position E in FIG. D. The state where the key is inserted is shown. Shows that 4 tumblers are put in each section. A. FIG. 7 is a sectional view taken at the F and G positions in FIG. B. The state where the key is inserted is shown. FIG. 9 shows the tumbler of one section of FIG. 8 and the keyway of the key shaft corresponding to the tumbler. A. A conventional cylinder with one tumbler in one compartment is shown. B. The key used for the cylinder in Fig. A is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1 division 2 2 division 3 3 division 4 4 division 5 5 division 6 Partition 7 Outer cylinder 8 Inner cylinder 9 Key hole 10 Key lock 11 Tumbler 12 Tumble spring 13 Locking bar 14 Locking bar receiving groove 15 Locking bar spring 16 Retaining stopper 17 Key shaft 18 Tumbler keyhole 19 Guide pile 20 Keyway 21 Keyway 22 Keyway 23 Keyway 24 Keyway 25 Keyway tip opening 26 Keyway swell 27 Tumbler shaft 28 Tumbler reinforcement 29 Tumbler claw receiving groove 30 Tumbler claw 31 Outer cylinder 32 Inside Tube 33 Keyhole 34 Partition 35 Partition 36 Tumbler 37 Tumbler spring 38 Keyway

Claims (4)

In a cylinder in which the tumbler moves linearly or rotationally when the key (10) is inserted and removed, a plurality of tumblers (11) are incorporated into one section (1) partitioned by a partition (6) for incorporating the tumbler, Cylinder structure characterized by incorporating multiple tumblers per compartment. One tumbler spring (12) is assembled to two tumblers (11a) (11b) incorporated in one section (1), and two tumblers are moved by one tumbler spring. The cylinder structure according to claim 1. A plurality of tumblers (11a), (11b), and (11c) in one section correspond to individual key grooves (21a), (21b), and (20) provided on the key shaft (17) of the key, and each tumbler The cylinder structure according to claim 1, wherein the cylinder structure is moved by an individual keyway. The plurality of tumblers (11a) and (11b) in one section correspond to the same keyway (20a) provided on the key shaft (17) of the combined key, and the plurality of tumblers are moved by one keyway. The cylinder structure according to claim 1, wherein