HK1096717B - Cylinder for a safety lock - Google Patents

Description

The invention relates to a rotary-clutch cylinder for a safety lock, with a stator and a rotor with a key channel, with latches which are classifiable to release the rotor from rotation with a corresponding key, each having a core pin and a spring-loaded housing pin, with at least one barrier organ arranged in the rotor's rotation direction, as shown by the basic position in the stator, spring-loaded to the rotor's mantle surface, and which locks the rotor when a non-ordered core pin reaches its position.

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The DE-A-199 34 883 has made known a rotary-clutch cylinder of the above-mentioned type. It has a bolt organ in the stator, which has a wire with a plate-shaped part attached to the front. If a core pin is not correctly arranged when the rotor is rotating and it reaches the said bolt organ, the wire gets stuck between the rotor and the stator and leads to the blocking of the rotor, so that the lock cannot be opened.

A similar rotary cylinder has been identified from the FR-A-23 12 630; the bolt organ here consists of a mushroom-shaped bolt and a spring.

US-A-3,802,234 reveals a rotary-switch cylinder with a bolt organ, consisting of a spring element and three other parts. The two parts form a spindle. In the case of an unclassified core bolt, one rear part goes into the spindle and its parts finally intersect in a step drill of the housing, so that it cannot be brought back into the housing bore.

The purpose of the invention is to create a rotary-loop cylinder of the above type which prevents even more secure manipulations and which can nevertheless be manufactured and assembled at a low cost.

The problem is solved in the case of a type-approved latch by having the locking mechanism consist of two parts, between which a spring element is placed and which, in the case of an unattached core pin, are separated from each other in such a way that they cannot be put together.

The latch organ according to the invention can be manufactured from only three parts. The inner part remains in the housing bore in principle even in the event of manipulation, but can no longer be brought back to its original position. The rotor can therefore not be rotated either clockwise or counterclockwise. The latch cylinder according to the invention is particularly suitable for a latch lock, which makes it possible to fix a replaced previous key in the latch cylinder in such a way that it cannot be removed.

The locking device is designed to lock the locking device by means of a telescopic and radial connection in the locking device. The telescopic connection is designed to be lifted as soon as an unordered nuclear pin hits the locking device. This connection can be made relatively precisely so that re-introduction of the locking device into the locking device is practically excluded.

The invention also relates to a latch-locked rotary cylinder, in which the latch is arranged in the direction of rotation of the rotor, according to a housing pin which can bridge at least two step loops. This housing pin has a conical or spherical front face. In such a latch-locked cylinder, a latch can be established only by replacing a core pin. The previous key is then replaced by a key corresponding to the new core pin. The previous key allows the rotor to be rotated to the latch-lock. Once this key is reached, the above-mentioned springs separate the two parts and the inner part of the rotor is locked. The inner part is not opened radially, so that the corresponding key cannot be moved in the same way. The key cannot be moved in the same way, and the rotor cannot be moved in any way.

An example of an embodiment of the invention is shown below, illustrated in detail: Figure 1a section through a latchwork cylinderFigure 2a partial section through a rotary latchwork cylinder with the latchwork cylinder in the latchwork position,Figure 3a diagrammatically cut through a latchwork cylinder without a key with a negative latchwork position,Figure 4a representation as in Figure 3, but with keys and rearranged hinges,Figure 5a section through a keywork cylinder according to the invention without a key and a negative latchwork, but with a replaced core pen, a latchwork cylinder and a special red key pen,Figure 6a representation as in Figure 5, but with a newly-arranged key, but with all the entrances arranged in a single place,Figure 7a representation as in Figure 6, with a height of the key, but with a slightly extended key,Figure 8, 9 and 10a representation as in Figure 6, but with a slightly extended key,Figure 8a representation as in Figure 9, but with a rearranged key.

Figures 3 and 4 show a well-known rotary cylinder 1 for a safety lock, which has a stator 3 in which a rotor 2 is located. The stator 3 forms the housing and has a cylinder bag 8 shown here only partially. The rotary cylinder 1 has a number of grips, of which the grips Z1, Z2 and Z3 are shown here. These grips Z1 to Z3 each have a housing pencil 25, stored in a slider 7, and can be moved radially against the reverse force of a pressure spring 26. The sliders 7 are each inserted into a 27 (Figure 2) of the stator 3 and are useful for taking 12 grabs of a 25th-degree bracket.

In Figure 3, all casing pins 25 lock the rotor 2 negatively, i.e. they cross the dividing line T or shear line between the rotor 2 and the stator 3. The casing pins 25 are located on a bolt 10, 10a or 10b respectively. If a key 4 as shown in Figure 4 is inserted in a key channel 5 of the rotor 2, the supports Z1 to Z3 are arranged as shown in Figure 4. The rotor 2 can be freely rotated. To arrange the supports 1 to Z3, the key has 4 holes 9, which are of different depths for each of the core pins 10, 10a and 10b. These holes 9 form the control loop for the corresponding supports.

The key cylinder 1 of the invention shown in Figure 5 has, in addition to the key cylinder 1 shown in Figures 3 and 4, a further 7' slide with at least one locking organ 14. The core pin 10 provided for in the key cylinder 1 has been replaced by a shorter core pin 10'. In addition, the Z3' suspension has a housing pin 29 with a face 30 which is conical in shape as shown. This face 30 may also be spherical or similar in shape.

The locking device 14 is shown in Figure 1 in greatly enlarged form. It consists of three parts, namely a guide part 16, a locking element 1 S and a comparatively strong pressure spring placed between them 18. Both parts 15 and 16 are, as can be seen, cup-shaped. The locking element 15 has a flat front surface 19, which, according to Figure 5, is attached under tension to a mantle surface 6 of the rotor 2. The locking element 15 also has an area 21, which runs parallel to the surface 19 and is located in an exception 17 of the guide part 16. The spring 21 is also located as can be seen at a distance from a spring 22, which leads to one of the most important surfaces of the guide 16 spring. The locking element 15 16 is connected to a mantle surface 6 of the rotor 18 under tension. The locking element 15 is located in the innermost compartment of the lead, which is the smallest possible difference between the lead elements 15 and 18 18 and the spring 23 is located in a locking element 15 18 which sometimes forms a single lead surface 16 of the guide spring. The locking element 15 16 is the smallest possible difference between the lead element 15 and the lead element 18 and the locking element 18 is located in the innermost compartment of the lead.

In Figure 4, the rotor 2 is in the base position. In the key channel 5, a 4' key is inserted, which is distinguished from the previous key 4 by a correspondingly shallower 9' bore. The housing pin 29 is correctly arranged here so that the rotor 2 can be rotated in the position shown in Figure 7. The core 10 is now, according to Figure 7, at the height of the locking organ 14. It arranges the locking organ 14 like a normal housing pin. The locking pin 14 here does not lock and the rotor 2 can therefore be rotated further in the clock face to open the unlocked lock in the clock face.Figure 8 shows the rotor cylinder 1 in the same position as in Figure 6, but here the key 4 is inserted in the key channel 5, i.e. the old key. As can be seen, the housing pin 29 with its front surface 30 crosses the dividing line T, since the bore 9 of the key 4 does not correspond to the length of the core pin 10'. Now that the surface 30 is conical, the rotor 2 can still be rotated further, as indicated in Figure 9. The rotor 2 raises the housing pin 29 at the conical surface 30 and moves it radially outwards.The surface 30 can be spherical or similarly shaped, as mentioned above, so that the rotor 2 can be turned outwards over the housing pin 29 with the 4' switch.

Now, when the core pin 10' reaches the bolt 14 it activates and locks the rotor 2, as shown in Figure 2. Because of the deeper bore 9 the front surface 13 of the core pin 10' shown in Figure 2 is at a distance from the separation surface T, the bolt 15 of the core pin 10' cannot be held in the position shown in Figure 1. The tension of the spring 18 moves the bolt 15 radially inwards until the distance D between the surfaces 21 and 22 shown in Figure 1 is lifted. The distance D is slightly less than one step so that the guide of the bolt 15 is lifted as soon as this step is moved radially after the bolt. The 15th bolt is thus dislodged as shown in Figure 11 and 12 and the guide of the bolt 16 is in the red bolt.

The locking element 15 locks the rotor 2 and it can now be rotated neither clockwise nor counterclockwise. In addition, the locking element 15 can no longer be radially inserted into the leading part 16 because the area 21 of the locking element 15 now lies on the area 22 of the leading part 16. As already mentioned above, since the space between the leading part 16 and the locking element 15 is relatively narrow, a relatively small twist of the locking element 15 is sufficient to prevent a radial movement. This blocks not only the rotor 2, but also the 10′ core pin, which can no longer be moved radially. The key 4 is thus held by the 10′ core pin, which prevents the old key 4 from being detached from the 1′ core.

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The conversion of a rotary-loop cylinder to a catch-lock thus involves the following three steps.

At least one core 10 is replaced by a short core 10′. For example, a three core pen is replaced by a two core pen.

The old 4' wrench is replaced by a new 4' wrench, in which case the 3-pin drill is replaced by a 2-pin drill.

In this case, the housing pin 29 is used, which can compensate for at least one step jump. This housing pin 29 can also be pre-assembled, so that the switch to a capture circuit requires only the replacement of the core pin 10 by the core pin 10' and the manufacture of the new key 4'.

The barrier 14 is used in this case to produce a catch lock, but it is also very effective against many manipulations, for example against the aforementioned impact technique.

List of reference marks

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Claims (8)

1. Rotary locking cylinder for a safety lock, comprising a stator (3) and a rotor (2) which has a keyway (5), comprising tumblers (Z1-Z3) which are to be arranged in order by an associated key (4') for rotary release of the rotor (2) and which each have a core pin (10) and a spring-loaded housing pin (25, 29), with at least one blocking element (14) being arranged in the stator (3) behind the home position as seen in the direction of rotation of the rotor (2), this blocking element resting on a casing surface (6) of the rotor (2) in a spring-loaded manner and blocking the rotor (2) when a core pin (10') which is not arranged in order reaches its position, characterized in that he blocking element (14) has two parts (15, 16) between which a spring element (18) is arranged and which are separated from one another such that they can no longer be joined together when the core pin (10') is not arranged in order.
2. Rotary locking cylinder according to Claim 1, characterized in that one of the said parts (15), by way of a face (21), is at a distance (D) from a face (22) of the guide part (16), with this distance (D) being smaller than a gradation.
3. Rotary locking cylinder according to Claim 1 or 2, characterized in that the two parts (15, 16) are of cup-like design.
4. Rotary locking cylinder according to one of Claims 1 to 3, characterized in that the two parts (15, 16) can be guided one into the other such that they can be displaced in a sliding manner and with a comparatively narrow intermediate space (31).
5. Rotary locking cylinder according to one of Claims 1 to 4, characterized in that the spring element (18) is a comparatively strong helical spring.
6. Rotary locking cylinder according to one of Claims 1 to 5, characterized in that the blocking element (14) forms a trapping locking means, with a housing pin (29) being arranged in front of the blocking element (14) as seen in the direction of rotation of the rotor (2), this housing pin having a conical or spherical end face (30), so that this housing pin (29) can also be arranged in order by a core pin (10') which is smaller, for example, by a gradation.
7. Rotary locking cylinder according to one of Claims 1 to 6, characterized in that at least one tumbler is provided with a housing pin (29) which can operate two gradations.
8. Rotary locking cylinder according to Claim 7, characterized in that the said tumbler is arranged in front of a blocking element (14) as seen in the direction of rotation of the rotor (2).