JPH0319347B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rotary cylinder lock.

[Conventional technology]

A well-known rotary cylinder lock includes a cylinder core rotatably disposed within a cylinder case, and an inner pin and an outer pin movably disposed in a plurality of holes extending radially with respect to the cylinder case. It has a pin tightening device (tumbler pin) consisting of two parts of the pin, and this pin tightening device is
Spring loaded. These pin tightening devices are positioned by flat keys inserted into key grooves in the cylinder core so as to allow free rotation of the cylinder core. At this time, the pin tightening device is engaged and positioned by each concave portion on the surface of the key. In this type of lock, which has a cylinder core of a predetermined diameter and a key insertion groove of the same cross section,
A wide variety of locking possibilities are available with different depths of the recesses on the side of the key and with two inner and outer pins.
This is achieved by designing the inner pins of the segmental pin tightening device to have different lengths.

Another possibility for increasing the variety of locks can be achieved by designing the spacing between several pinning devices to different lengths. Furthermore, the axial distance of the first pinning device from the key stop in the face of the inner cylinder can also be varied.

Furthermore, it is known from Swiss Patent No. 432 279 to increase the number of locking possibilities by changing the radial distance of the key groove from the surface of the cylinder core.

Furthermore, from Japanese Patent Publication No. 52-45557, two types of keys were created in which the shape of the lower pin tumbler was changed in various ways, and two types of keys were provided with notches to support the two supporting parts, namely the lower end and the shoulder, created by the deformation. If the lengths from the top edge of the lower tumbler to the shoulder are the same in the same row, a key with a notch supporting the shoulder will have a group of lower tumblers combined with the lower tumbler. It can be commonly applied to multiple cylinder locks.

However, in the number of lock varieties that are conceivable according to the above-mentioned and hitherto known methods, all or the majority of the locks are operated by a master key, and at least a special group of locks and a single lock are used. This is often insufficient in the case of locking systems for large buildings, such as factories, hotels or banks, where one is operated by auxiliary or single keys that are different from each other and different from the master key. In such locking systems, it is often necessary to omit the pinning device from some locks, ie, to provide the pinning device only in some of the holes that are present. However, this results in a reduction in the security of the lock.

[Problem to be solved by the invention]

It is an object of the present invention to overcome the drawbacks of the prior art as mentioned above and also to allow rotation of different locking types in a technically acceptable manner, without the need for example to omit a pinning device. Our purpose is to provide cylinder locks.

[Means to solve the problem]

These problems are solved according to the present invention by providing a cylinder case, a cylinder core rotatably disposed within the cylinder case and having a key groove, and a plurality of holes extending radially through the cylinder core and the cylinder case. It has a plurality of pin tightening devices movably disposed and spring loaded and consisting of two parts, an inner pin and an outer pin, and the plurality of pin tightening devices are attached to a flat key inserted into the key groove. In a rotary cylinder lock that can be positioned at a position that allows free movement of the cylinder core by a formed recess, the tip of the inner pin of the pin tightening device has a protrusion with a different height and the protrusion. and a concentric annular protuberance of different heights, and a concave part formed in the key and engaged with the tip of the inner pin is connected to a concave part of different heights and the concave part. To provide a rotary cylinder lock characterized by a combination of concentric annular recesses of different heights.

Of course, the possibilities for increasing the known lock types mentioned above can be used in addition to the inventive concept.

〔Example〕

Embodiments of the present invention shown in the drawings will be described in detail below.

The lock cylinder of FIG. 1 has, in a known manner, a fixed cylinder case 1 and a cylinder core 2 rotatably arranged in the fixed cylinder case 1. The key 4 is inserted into the key groove 3 of the cylinder core 2. A plurality of holes 5 are formed in the cylinder case 1 and the cylinder core 2, extending substantially radially through the cylinder case 1 and the cylinder core 2. A pin tightening device (tumbler pin) is slidably inserted into the hole 5. The pin tightening device consists of two pin parts, an inner pin and an outer pin 6, respectively. The inner pin can have a wide variety of tip shapes, and the tips are designated by symbols A to K to identify them.
is attached. The outer pins 6 have different lengths depending on the inner pins inserted into the same hole 5, so that the type of the inner pin can be identified. A case 8 is fixed to the outer periphery of the fixed cylinder case 1, and a spring 7 is disposed in each hole 5 between the outer case 8 and the outer pin 6.
toward the inner pins A to K. The inner pins A to K are pressed radially inward by the outer pin 6 toward the key 4 inserted into the cylinder core 2. Holes are formed on both sides of the key 4 at positions where the tips of the inner pins A to K face each other. Hole-like recesses 9 having control surfaces of different depths can be selectively formed in the holes. When the inner pins A, C, H and K are engaged with the hole-shaped recess 9 shown in FIG. It is located at the interface between the case 1 and the cylinder core 2 and allows relative rotation of the cylinder core 2 with respect to the cylinder case 1.

The holes are control surfaces 10a, 10b with three different depths, such as concentrically formed hole-like recesses with three different depths in the key 4 instead of hole-like recesses.
10c can be formed.

As shown in FIG. 2, the inner pins to be inserted into the holes 5 include inner pins B ₃ , B ₄ , and B ₅ whose tip portions are truncated conical projections having different heights, and Inner pins B ₁ , B ₂ , B ₄ , B ₇ each having a multi-step frusto-conical projection having different heights can be used, for example, an inner pin having seven different shaped tips. . Depending on the shape of each head of the inner pin,
In order to unlock the key 4, the depth of the corresponding hole-shaped recess 9 or multi-stage hole 10 is determined. Pin B ₅
is equivalent to pin B in FIG. A multi-stage hole section having a shape as shown in FIG. 3 in which the control surface 10c of the multi-stage hole section 10 of the key 4 is omitted can be used. In the key 4 shown in FIG. 3 having a multi-stage hole, only the inner pins B ₂ , B ₃ and B ₄ can be positioned to release the lock. That is, the joint surface between the inner pin and the outer pin 6 is located at the interface between the cylinder case 1 and the cylinder core 2, allowing relative rotation of the cylinder core 2 with respect to the cylinder case 1. Outer pins 6 having different heights are used depending on the height of the tip of the inner pin, that is, the depth of the hole-like recess 9 or the multi-stage hole 10 to which the inner pin corresponds. Therefore, a lock with inner pins B ₁ , B ₅ , B ₆ and B ₇ cannot be opened by the key 4 having the hole shown in FIG. Annular hole 11 in key 4
When the hole is formed in the manner shown in FIG. Even when pins exhibiting 10 different shapes D ₁ to D ₁₀ shown in FIG. 4, which are a combination of a concentric annular protuberance and are arranged in place of the inner pin D in FIG. The direction pin can be positioned in the unlocked position.

Pin D ₂ is equivalent to inner pin D of FIG.
If the annular hole 11 of the key 4 is changed to the shape shown in FIG. 5, for example, the annular hole 1
1 can position only the inner pins D ₅ and D ₆ in the unlocked position. A large number of additional locking variants can be created by similarly making variations in the multi-stage hole 10, the annular hole 11 and the tips of the respective inner pins. Further, holes having different control surfaces can be formed on one side surface and the other side surface of the key 4. As the hole for positioning the inner pin G in the unlocked position, for example, a hole having both the multi-stage hole 10 and the annular hole 11 (the first
) is valid.

As another example, the cross-sectional shapes of the holes 5 in the cylinder case 1 and the cylinder core 2 may be changed to a shape other than a circle, for example, a square. At this time, the hole may also have a shape other than a circle, for example, a square. Naturally, in this case, the cross-sectional shape of the inner pin and outer pin of the pin tightening device can be changed to a shape other than circular, for example, square, and in this example, the tumbler pin cannot rotate within the hole 5. This allows the arrangement of the hole in the key 4 as shown in Figures 6a and 6b. However, the production of such a shaped hole in the key 4 is expensive since it cannot be drilled or milled, but must be reamed or stamped.

FIG. 7 shows an example in which some of the holes are likewise formed on the narrow side surface of the key 4. Further, a large number of holes having different shapes are formed on the side surface of the key 4. The sectional view of the key 4 according to FIG. 8 discloses that the hole 12 corresponding to the tip of the inner pin, which is arranged obliquely to the side wall of the key, can likewise be made for a pin tightening device. do.

With several control surfaces, especially FIGS.
A key with a control surface according to Figures 8 and 8 is difficult to copy by unauthorized persons, which considerably increases the security of the cylinder.

The rotary cylinder lock of the present invention includes a pin tightening device consisting of two spring-loaded parts, and the pin tightening device is arranged radially with respect to the lock cylinder case 1 and on the side surface of the flat key 4. In cooperation with the holes 9, 10, 11, some of which have a stepped shape. In this manner, one hole (eg 10) presents different control surfaces 10a, 10b, 10c that can cooperate with separately arranged inner pins. By omitting some control surfaces (eg 10a) it is possible to create multiple auxiliary or single keys that can position only some of the inner pins of all the same group. In this manner the number of different locking possibilities of such a lock can be increased.

[Brief explanation of drawings]

FIG. 1 shows some of the inner pins associated with the key having holes with different control surfaces; FIG.
The figure is a schematic diagram showing the shape of the tip of the inner pin of seven different pin tightening devices that can cooperate with one of the holes in the key shown in FIG. FIG. 4 is a schematic diagram showing the tips of ten different pin tightening devices that cooperate with other holes of the key; FIG. FIG. 4 is a sectional view showing a key with holes modified for some of the pin tightening devices according to FIG. 4, FIGS. 7 is a cross-sectional view showing the shaft portion of a flat key having different holes, and FIG. 8 is a cross-sectional view showing a key having a hole for a pin tightening device extending perpendicularly to the plane of the key and on a slope. It is a diagram. 1... Cylinder case, 2... Cylinder core,
3...key groove, 4...key, 5...hole, 6...
Outer pin, 7... Spring, 8... Case, 9...
Hole-shaped recess, 10...Multi-stage hole, 10a, 10b,
10c...Control surface, A~K...Inner pin.

Claims (1)

[Scope of Claims] 1. A cylinder case, a cylinder core rotatably disposed within the cylinder case and having a key groove, and a cylinder core movable into a plurality of holes extending radially through the cylinder core and the cylinder case. a recess formed in a flat key in which the plurality of pin tightening devices are inserted into the key groove; In a rotary cylinder lock that can be positioned in a position that allows free movement of the cylinder core when adapted to the lock, the inner pin of the pin tightening device has a tip portion formed as a protrusion with different heights. Any of the plurality of types of inner pins B ₃ to _{B 5} and the plurality of types of inner pins B ₁ , B ₂ , B ₆ , and B ₇ having tip portions formed as multi-stage protrusions with different heights. a hole-like recess 9 formed in the key and in which the tip of the inner pin engages has a hole-like recess 9 having different depths;
Multiple control surfaces 10a, 10b, 10 with different depths
a multi-stage hole section 10 having a diameter c, and the control surface 10a,
1. A rotary cylinder lock comprising any combination of holes consisting of one of the holes 10b and 10c. 2 a cylinder case, a cylinder core rotatably disposed within the cylinder case and having a keyway; a spring-loaded cylinder movably disposed within a plurality of holes extending radially through the cylinder core and the cylinder case; , a plurality of pin tightening devices consisting of two parts, an inner pin and an outer pin, and when the plurality of pin tightening devices fit into the recess formed in the flat key inserted into the key groove, the cylinder In a rotary cylinder lock that can be positioned at a position that allows free movement of the core, the inner pin of the pin tightening device has a plurality of types of inner pins each having a tip formed as a protrusion with different heights. Pins B ₃ to B ₅ , D ₃ , D ₄ and a plurality of types of inner pins B ₁ , B ₂ , B ₆ , B ₇ , D ₂ having tips formed as multi-stage protrusions with different heights. , a plurality of types of inner pins D ₆ having tips formed as annular ridges of different heights, and a plurality of types of inner pins D 6 having tips formed as multi-stage annular ridges of different heights. A pin D ₅ , a plurality of types of inner pins D ₈ each having a tip having a protrusion of different heights and an annular protuberance of different heights concentric with the protrusion; A plurality of types of inner pins D ₇ each having a tip portion formed with a multi-stage protrusion and an annular protuberance of different heights concentric with the protrusion;
A plurality of types of inner pins D ₉ and D ₁₀ each having a tip portion formed with a protrusion of different heights and a multi-stage annular protrusion of different heights concentric with the protrusion, and a multi-stage of different heights. The inner pin _D1 is formed of an arbitrary combination of a plurality of types of inner pins D1 each having a tip portion formed with a protrusion and a multi-stage annular protrusion concentric with the protrusion and having different heights, A multi-stage hole portion 10 has a plurality of types of recesses in which the recesses with which the tips of the side pins engage are hole-shaped recesses 9 with different depths, and a plurality of control surfaces 10a, 10b, and 10c with different depths.
a plurality of types of recesses having a plurality of types, and the control surface 10
a, 10b, and 10c, a plurality of types of recesses having an annular hole with different depths, and a concentric stepped annular hole 11 with different depths. multiple types of recesses having
A plurality of types of double recesses each having a hole-like recess with a different depth and an annular hole with a different depth that is concentric with the hole-like recess, and a plurality of control surfaces 10a and 10 with different depths.
A rotary cylinder comprising an arbitrary combination of a multistage hole 10 having holes 10b and 10c and a plurality of types of multistage double recesses having a stepped annular hole 11 concentric with the hole and having different depths. Tablet. 3. The protrusion of the inner pin is a truncated conical protrusion, the annular protrusion is a protrusion having a conical surface, and the hole-like recess of the recess is either a conical recess or a truncated conical recess. The rotary cylinder lock according to claim 1, wherein the control surface is a conical control surface. 4. The projection of the inner pin is a truncated pyramidal projection, the annular protuberance is a truncated pyramidal projection, and the hole-like recess of the recess is either a truncated pyramidal recess or a truncated pyramidal recess. Claim 1, wherein the control surface is a pyramidal control surface.
The rotary cylinder lock described in section. 5. The protrusion of the inner pin is a truncated conical protrusion, the annular protuberance is a protrusion having a conical surface, and the hole-like recess of the recess is either a conical recess or a truncated conical recess. 3. The rotary cylinder lock according to claim 2, wherein the control surface is a conical control surface, and the annular hole is a hole having a conical surface. 6 The projection of the inner pin is a truncated pyramidal projection, the annular protuberance is a truncated pyramidal projection, and the hole-like recess of the recess is either a truncated pyramidal recess or a truncated pyramidal recess. 3. The rotary cylinder lock according to claim 2, wherein the control surface is a pyramidal surface-shaped control surface, and the annular hole is a hole having a pyramidal surface. 7. The rotary cylinder lock according to claim 1, wherein the shape of the recess and the tip of the inner pin are a combination of a conical shape and a pyramid shape.