JPS5939595B2 - cylinder lock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a cylinder lock having a permanent magnet rotation type final tightening mechanism operated by a permanent magnet key, which is fixed in and together with the inner cylinder by the inner cylinder. A locking strip is provided which is movable in the axial direction against a spring force, the locking strip cooperating with a permanent magnet rotary final tightening mechanism and a locking pin for axial return movement. and an inclined landing surface for cooperating with the landing surface of the locking ring.

This type of cylinder lock was published in Japanese Patent Publication No. 53-40398.
In this case, a locking member and a permanent magnet rotation type final tightening mechanism (magnetic rotor) are arranged in a notch of an inner cylinder and are covered by an intermediate member forming a part of the cylinder. maintained or guided.

The locking ring for the axial movement of the locking member is arranged immovably in the casing. A disadvantage of such a known arrangement is that the rotational force is increased when locking is attempted with an incorrect key. Most of the transmission is not transmitted through the locking member to the sensitive permanent magnet rotating final tightening mechanism, and there is therefore a risk of damaging the lock.

Sensitive internal components, such as the permanent magnet rotary final tightening mechanism and the associated locking elements, can easily be disrupted by other components that have penetrated.

Moreover, exact guidance for the axial movement of the locking member is not guaranteed.

It is therefore an object of the present invention to provide a permanent magnetic lock of the above-mentioned type in which all internal components are protected and covered and the risk of damage due to incorrect keying or improper handling is eliminated. The object of the present invention is to provide a cylinder lock operated by

In order to solve such problems, in the present invention, (a) the locking strip has a locking member that cooperates with the vertical groove and the annular groove in the casing; (b) being arranged in such an axial position that rotation of the locking strip is made possible by the inner cylinder by the locking element entering into the associated annular groove in the displacement position of the piece; (b) locking; A ring is rotatably disposed within the casing and is locked at the position of the locking ring by a spherical snap locking member, the ring being adapted to release when the lock exceeds a predetermined retention force. This configuration has the advantage that when attempting to lock with an incorrect key, the rotational force will hardly act on the permanent magnet rotating final tightening mechanism below the locking strip. .

When a predetermined rotational force is exceeded, the locking ring can be rotated relative to the housing, which prevents the locking strip from pressing the permanent magnet rotating locking mechanism any further.

The rotational force is then absorbed by the internally configured external locking element and the lock is thereby blocked and cannot be damaged.

The invention will be explained below with reference to the exemplary embodiments shown.

1 to 7 show a cylinder lock that is connected to an outer cylinder, that is, there is only one final tightening mechanism in the entire cylinder lock (not shown).

The locking member shown in FIGS. 1 and 3 acts directly on the cylinder lock.

A door with a lock cannot be locked at all from the other side, or by a knob, rotary knob, etc.

In a casing 1 of a cylinder lock, an inner cylinder 3 is rotatably supported within a hole.

A key 17 having three key magnets 20 is inserted into the key passage 19 of the inner cylinder 3.

In the notch 21 of the inner cylinder parallel to the key passage 19, a rotating magnet as a permanent magnet rotating final tightening mechanism is supported in the blind hole, and the rotating magnet can be used to lock the key in a well-known manner. It is brought into a limited rotational position by the magnet 20.

Over the magnet rotors and inside the recess 21 a locking strip 4 is provided, which is movable in the axial direction and is pushed to the left by a locking spring 22.

The locking strip 4 has an outer locking element 7 and a locking pin 8 which projects inwardly in the area of the inner cylinder.

At its left-hand end, the locking strip 4 has a tapered section 14, which has an obliquely extending flank 9.

The tapered part 14 locks in the axial cutout 13 of the locking ring 11 in the position according to FIG.

The cutout 13 has a flank 10 that coincides with the taper 14 .

The locking ring 11 is arranged around the inner cylinder 3 inside the casing 1 and is freely rotatable both with respect to the casing and with respect to the inner cylinder.

The position of the locking ring relative to the casing 1 according to FIG. 1 is determined by a spherical snap locking element 12.

The casing 1 has a longitudinal casing groove 5 and an annular groove 6 in the inner wall of the bore for the inner cylinder 3 (see FIG. 7).

The longitudinal casing groove 5 and the annular groove 6 are designed as follows.

That is, the outer locking member 7 can be moved axially in the longitudinal casing groove 5 and can be rotated in the annular groove 6 together with the rotation of the inner cylinder 3 at a position corresponding to the annular groove 6. As you can.

The inner cylinder 3 has a key holding pin 1 parallel to the axis of the magnet rotating body.
It has a hole 23 for accommodating 8.

On the side opposite the key, the key retaining pin 18 is connected to the locking strip 4
At the position shown in FIG.
When the key 17 is inserted, the key retaining pin 18 is moved to the left (FIG. 2).

The functions of the cylinder lock according to the present invention are shown below.

The key with the correctly coded key magnet 20 is in the key passage 1
9, the magnet rotor 2 assumes the rotational position shown in FIG.

That is, the notch portion 15 of the magnet rotating body is located facing the locking pin 8.

By rotating the inner cylinder 3 with the key 17, the locking strip 4 is moved to the right against the spring force of the spring 22, with the flank 9 riding up on the flank 10 of the locking ring 11.

In this case, the locking pin 8 enters into the notch 15 of the magnet rotor.

At the same time, when the key retaining pin 18 moves from the conical cutout 24 to the right toward the key passage 19, it penetrates into the corresponding key groping groove 25 and holds the key 17 immovably in a predetermined position. .

By moving the locking strip 4, the outer locking element 7 assumes a position such that it is fitted into the annular groove 6 and the inner cylinder is rotated for the locking process.

After the end of the locking process (after 360° rotation), the locking strip 4 locks again in the cutout 13 of the locking ring 11 under the pressure of the spring 22, the key retaining pin 18 is released and the key is released. be drawn out.

If the cylinder lock according to the invention is locked with the wrong key, i.e. supports an incorrectly coded key magnet and/or
If the search groove 25 is located in the wrong position, the locking strip 4 will not be moved to the right when the inner cylinder 3 is rotated.

This transmits the rotational force of the key 170 through the tapered portion 14 to the locking ring 11, which overcomes the holding force of the spherical snap locking member 12 with some force, and then the locking ring 11 is rotated together with the inner cylinder 3.

By slightly rotating the inner cylinder, the edge 26 of the outer locking member comes into contact with the edge 27 of the casing longitudinal groove 5, which prevents the inner cylinder from being rotated any further, thereby preventing erroneous keying. locking can be avoided.

In the embodiments described above, only half of the cylinder lock is shown as the locking structure for reasons of simplicity of the drawings.

Advantageously, however, the aforementioned structures can be arranged on both sides of the key, thereby providing multiple miskeying and locking security.

If it is arranged on both sides of the key, the locking ring 11 must have two cutouts 13 located diagonally to each other.

The final tightening mechanism according to the invention is also used for double-sided cylinder locks, in which case the final tightening mechanism is provided on the inner cylinder and the outer cylinder, respectively.

FIG. 8 shows the connection range between the inner cylinder and the outer cylinder of the double-sided cylinder lock.

The connection according to the invention provides two connection parts 28, 29, which consist of a cylindrical body 34 and two wings 35, 36 in each case.

One bar magnet 30, 31 is arranged in each body 34 of the connecting parts 28, 29, which bar magnets have opposite magnetic properties, so that both connecting parts are attracted by opposite magnetisms. It will be done.

The two connecting parts are movably mounted in correspondingly formed slots 37 in the inner cylinder.

The locking lug ring 38 has a cross slit 40 in its central plate 39 into which the connecting part 2 is inserted.
8.29 can be locked from the left or right side.

When the key 17 is completely inserted into the key passageway from the right side in FIG. In this case, the other connecting part 29 is moved out of the locking projection ring.

This causes the right-hand inner cylinder to be rotated by the key 17, and the locking lug ring 38 to be rotated by the key without rotating the left-hand inner cylinder together.

As can be seen in FIG. 9, the cross slit 40 communicates with two holes 41 passing through the locking projection ring 38.

Via a not shown pin, moving the two connecting parts apart from each other through the hole 41 causes the locking lug ring 38 to be rotated relative to the inner cylinder and the connecting part 28,29. , and the lock is switched from left-hand mode of action to right-hand mode of action.

8 and 10, a spring ring 42 holds the inner cylinder of the casing 1. In FIGS.

The connection according to the invention is simple in construction and is necessary for precise guidance of the connection part without spring elements.

Owing to the omission of such a spring element, such a connection can be easily inserted after the double-sided cylinder lock has been assembled.

In a special case, both or one of the connecting parts consists entirely of magnetic material, for example aluminum/nickel/cobalt.

It is also possible to provide bar magnets 30 or 31 only in one coupling part, with the other coupling part consisting of a material that is attracted by said bar magnet.

The locking mechanism described above can be provided in a particularly advantageous manner in combination with a pin-tumbler lock of known construction.

A tumbler pin 16 is schematically shown in FIG. 1. Multiple keying variations can also be obtained by the arrangement of the pins.

The cylinder lock according to the invention is advantageously manufactured simply and inexpensively.

This is because die cast metal or sintered parts are used.

The arrangement according to the invention keeps the dimensions of the individual parts compact and therefore allows for high stiffness.

In short, the cylinder casing is not significantly weakened, as in the already mentioned configurations in which a sleeve is provided between the inner cylinder and the casing. be.

The invention is also a connection as described above, which can also be used in an advantageous manner in another lock combination.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a central vertical sectional view of the cylinder lock according to the present invention;
The figures are a sectional view taken along the line ■-■ in Figure 1, Figure 3 is a side view of the inner cylinder, Figure 4 is a side view of the locking strip, and Figure 5 is an end view of the locking strip. Fig. 6 shows an end view of the inner cylinder according to Fig. 3 on the right half, a cross section along VIa-VIa in Fig. 3 on the left half, and Fig. 7 shows the cylinder casing with the inner cylinder removed. 8 is a vertical sectional view showing another embodiment of the final tightening mechanism of the present invention, FIG. 9 is a sectional view taken along line IX-IX in FIG. 8, and FIG. FIG. 3 is a sectional view taken along line XX in the figure. DESCRIPTION OF SYMBOLS 1... Casing, 2... Magnet rotating body, 3... Inner cylinder, 4... Locking strip, 5... Casing vertical groove, 6
... Annular groove, 7... Locking member, 8... Locking pin, 9, 10... Flank, 11... Locking ring, 1
2... Spherical snap locking member, 13... Notch part,
14...Tapered part, 15...Notch part, 16...Tumbler pin, 17...Key, 18...Key holding pin,
19... Key passage, 20... Key magnet, 21... Notch, 22... Spring, 23... Hole, 24... Cutting part, 25... Search groove, 26. 27... edge, 28.
29...Connection part, 30.31...Bar magnet, 34.
...Main body, 35.36...Wing, 37...Slit,
38... Locking protrusion ring, 39... Center plate,
40... Cross slit, 41... Hole, 42...
spring ring

Claims (1)

[Scope of Claims] 1. A cylinder lock having a permanent magnet rotation type final tightening mechanism operated by a permanent magnet key, which has a lock in an inner cylinder that is rotated together with the inner cylinder and resists spring force. a locking pin provided with an axially movable locking strip, the locking strip cooperating with a permanent magnet rotary final tightening mechanism;
In the type having an inclined landing surface for cooperating with the landing surface of the locking ring for the axial return movement, (a) the locking strip 4 is fitted into a longitudinal groove in the casing 1; 5 and an annular groove 6, the annular groove 6 can be locked by the insertion of the locking element 7 into the associated annular groove in the displacement position of the locking strip 4. (b) The locking ring 11 is rotatably located within the casing 1, and A cylinder lock characterized in that it is locked in a predetermined position by a spherical snap locking member 12 and is released when the locking exceeds a predetermined holding force. 2. The locking strip 4 is arranged in the notch 21 in the peripheral wall of the inner cylinder 3, and the locking member 7 projects outward from the cylinder peripheral wall into the vertical groove 5, and the locking strip 4 The cylinder lock according to claim 1, wherein the cylinder lock projects into the annular groove 6 at the moving position. 3 A key-retaining pin 18 is provided, which key-retaining pin 18 is designed in one aspect to hold the key in place with the locking strip released until the correct key 17 is inserted. 3. Cylinder lock according to claim 1, characterized in that it cooperates with a search groove (25) and, on the other hand, with a cutout (24) in the locking strip (4). 4 A cylinder lock having a permanent magnet rotation type final tightening mechanism operated by a permanent magnet key, which has a cylinder lock inside an inner cylinder, which is rotated together with the inner cylinder and moved in the axial direction against a spring force. a locking pin provided with a locking strip capable of cooperating with a permanent magnet rotary final tightening mechanism;
It has an inclined landing surface for cooperating with the landing surface of the locking ring for the axial return movement, and the associated components are arranged on both sides of the double-sided cylinder lock, and Cylinder lock of the type in which a plurality of connecting parts are provided for transmitting the rotational movement of the cylinder to the locking lug ring, characterized in that the connecting parts 28, 29 are connected to one another by means of magnets. 5. A cylinder lock according to claim 4, wherein one or both of the connecting parts are made entirely of aluminum/nickel/cobalt magnetic material. 6. Cylinder lock according to claim 4, wherein the magnets 30, 31 are designed as bar magnets arranged in the axial bores of the connecting parts 28, 29.